Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

29 files changed, 11148 insertions, 0 deletions

diff --git a/net/atm/Makefile b/net/atm/Makefile
new file mode 100644
index 000000000000..d5818751f6ba
--- /dev/null
+++ b/net/atm/Makefile
@@ -0,0 +1,18 @@
+#
+# Makefile for the ATM Protocol Families.
+#
+
+atm-y		:= addr.o pvc.o signaling.o svc.o ioctl.o common.o atm_misc.o raw.o resources.o
+mpoa-objs	:= mpc.o mpoa_caches.o mpoa_proc.o
+
+obj-$(CONFIG_ATM) += atm.o
+obj-$(CONFIG_ATM_CLIP) += clip.o
+atm-$(subst m,y,$(CONFIG_ATM_CLIP)) += ipcommon.o
+obj-$(CONFIG_ATM_BR2684) += br2684.o
+atm-$(subst m,y,$(CONFIG_ATM_BR2684)) += ipcommon.o
+atm-$(subst m,y,$(CONFIG_NET_SCH_ATM)) += ipcommon.o
+atm-$(CONFIG_PROC_FS) += proc.o
+
+obj-$(CONFIG_ATM_LANE) += lec.o
+obj-$(CONFIG_ATM_MPOA) += mpoa.o
+obj-$(CONFIG_PPPOATM) += pppoatm.o
diff --git a/net/atm/addr.c b/net/atm/addr.c
new file mode 100644
index 000000000000..1c8867f7f54a
--- /dev/null
+++ b/net/atm/addr.c
@@ -0,0 +1,134 @@
+/* net/atm/addr.c - Local ATM address registry */
+
+/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
+
+#include <linux/atm.h>
+#include <linux/atmdev.h>
+#include <linux/sched.h>
+#include <asm/uaccess.h>
+
+#include "signaling.h"
+#include "addr.h"
+
+static int check_addr(struct sockaddr_atmsvc *addr)
+{
+	int i;
+
+	if (addr->sas_family != AF_ATMSVC)
+		return -EAFNOSUPPORT;
+	if (!*addr->sas_addr.pub)
+		return *addr->sas_addr.prv ? 0 : -EINVAL;
+	for (i = 1; i < ATM_E164_LEN + 1; i++)	/* make sure it's \0-terminated */
+		if (!addr->sas_addr.pub[i])
+			return 0;
+	return -EINVAL;
+}
+
+static int identical(struct sockaddr_atmsvc *a, struct sockaddr_atmsvc *b)
+{
+	if (*a->sas_addr.prv)
+		if (memcmp(a->sas_addr.prv, b->sas_addr.prv, ATM_ESA_LEN))
+			return 0;
+	if (!*a->sas_addr.pub)
+		return !*b->sas_addr.pub;
+	if (!*b->sas_addr.pub)
+		return 0;
+	return !strcmp(a->sas_addr.pub, b->sas_addr.pub);
+}
+
+static void notify_sigd(struct atm_dev *dev)
+{
+	struct sockaddr_atmpvc pvc;
+
+	pvc.sap_addr.itf = dev->number;
+	sigd_enq(NULL, as_itf_notify, NULL, &pvc, NULL);
+}
+
+void atm_reset_addr(struct atm_dev *dev)
+{
+	unsigned long flags;
+	struct atm_dev_addr *this, *p;
+
+	spin_lock_irqsave(&dev->lock, flags);
+	list_for_each_entry_safe(this, p, &dev->local, entry)
+	    kfree(this);
+	spin_unlock_irqrestore(&dev->lock, flags);
+	notify_sigd(dev);
+}
+
+int atm_add_addr(struct atm_dev *dev, struct sockaddr_atmsvc *addr)
+{
+	unsigned long flags;
+	struct atm_dev_addr *this;
+	int error;
+
+	error = check_addr(addr);
+	if (error)
+		return error;
+	spin_lock_irqsave(&dev->lock, flags);
+	list_for_each_entry(this, &dev->local, entry) {
+		if (identical(&this->addr, addr)) {
+			spin_unlock_irqrestore(&dev->lock, flags);
+			return -EEXIST;
+		}
+	}
+	this = kmalloc(sizeof(struct atm_dev_addr), GFP_ATOMIC);
+	if (!this) {
+		spin_unlock_irqrestore(&dev->lock, flags);
+		return -ENOMEM;
+	}
+	this->addr = *addr;
+	list_add(&this->entry, &dev->local);
+	spin_unlock_irqrestore(&dev->lock, flags);
+	notify_sigd(dev);
+	return 0;
+}
+
+int atm_del_addr(struct atm_dev *dev, struct sockaddr_atmsvc *addr)
+{
+	unsigned long flags;
+	struct atm_dev_addr *this;
+	int error;
+
+	error = check_addr(addr);
+	if (error)
+		return error;
+	spin_lock_irqsave(&dev->lock, flags);
+	list_for_each_entry(this, &dev->local, entry) {
+		if (identical(&this->addr, addr)) {
+			list_del(&this->entry);
+			spin_unlock_irqrestore(&dev->lock, flags);
+			kfree(this);
+			notify_sigd(dev);
+			return 0;
+		}
+	}
+	spin_unlock_irqrestore(&dev->lock, flags);
+	return -ENOENT;
+}
+
+int atm_get_addr(struct atm_dev *dev, struct sockaddr_atmsvc __user * buf,
+		 size_t size)
+{
+	unsigned long flags;
+	struct atm_dev_addr *this;
+	int total = 0, error;
+	struct sockaddr_atmsvc *tmp_buf, *tmp_bufp;
+
+	spin_lock_irqsave(&dev->lock, flags);
+	list_for_each_entry(this, &dev->local, entry)
+	    total += sizeof(struct sockaddr_atmsvc);
+	tmp_buf = tmp_bufp = kmalloc(total, GFP_ATOMIC);
+	if (!tmp_buf) {
+		spin_unlock_irqrestore(&dev->lock, flags);
+		return -ENOMEM;
+	}
+	list_for_each_entry(this, &dev->local, entry)
+	    memcpy(tmp_bufp++, &this->addr, sizeof(struct sockaddr_atmsvc));
+	spin_unlock_irqrestore(&dev->lock, flags);
+	error = total > size ? -E2BIG : total;
+	if (copy_to_user(buf, tmp_buf, total < size ? total : size))
+		error = -EFAULT;
+	kfree(tmp_buf);
+	return error;
+}
diff --git a/net/atm/addr.h b/net/atm/addr.h
new file mode 100644
index 000000000000..3099d21feeaa
--- /dev/null
+++ b/net/atm/addr.h
@@ -0,0 +1,18 @@
+/* net/atm/addr.h - Local ATM address registry */
+
+/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
+
+
+#ifndef NET_ATM_ADDR_H
+#define NET_ATM_ADDR_H
+
+#include <linux/atm.h>
+#include <linux/atmdev.h>
+
+
+void atm_reset_addr(struct atm_dev *dev);
+int atm_add_addr(struct atm_dev *dev,struct sockaddr_atmsvc *addr);
+int atm_del_addr(struct atm_dev *dev,struct sockaddr_atmsvc *addr);
+int atm_get_addr(struct atm_dev *dev,struct sockaddr_atmsvc __user *buf,size_t size);
+
+#endif
diff --git a/net/atm/atm_misc.c b/net/atm/atm_misc.c
new file mode 100644
index 000000000000..b2113c3454ae
--- /dev/null
+++ b/net/atm/atm_misc.c
@@ -0,0 +1,106 @@
+/* net/atm/atm_misc.c - Various functions for use by ATM drivers */
+
+/* Written 1995-2000 by Werner Almesberger, EPFL ICA */
+
+
+#include <linux/module.h>
+#include <linux/atm.h>
+#include <linux/atmdev.h>
+#include <linux/skbuff.h>
+#include <linux/sonet.h>
+#include <linux/bitops.h>
+#include <asm/atomic.h>
+#include <asm/errno.h>
+
+
+int atm_charge(struct atm_vcc *vcc,int truesize)
+{
+	atm_force_charge(vcc,truesize);
+	if (atomic_read(&sk_atm(vcc)->sk_rmem_alloc) <= sk_atm(vcc)->sk_rcvbuf)
+		return 1;
+	atm_return(vcc,truesize);
+	atomic_inc(&vcc->stats->rx_drop);
+	return 0;
+}
+
+
+struct sk_buff *atm_alloc_charge(struct atm_vcc *vcc,int pdu_size,
+    int gfp_flags)
+{
+	struct sock *sk = sk_atm(vcc);
+	int guess = atm_guess_pdu2truesize(pdu_size);
+
+	atm_force_charge(vcc,guess);
+	if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf) {
+		struct sk_buff *skb = alloc_skb(pdu_size,gfp_flags);
+
+		if (skb) {
+			atomic_add(skb->truesize-guess,
+				   &sk->sk_rmem_alloc);
+			return skb;
+		}
+	}
+	atm_return(vcc,guess);
+	atomic_inc(&vcc->stats->rx_drop);
+	return NULL;
+}
+
+
+/*
+ * atm_pcr_goal returns the positive PCR if it should be rounded up, the
+ * negative PCR if it should be rounded down, and zero if the maximum available
+ * bandwidth should be used.
+ *
+ * The rules are as follows (* = maximum, - = absent (0), x = value "x",
+ * (x+ = x or next value above x, x- = x or next value below):
+ *
+ *	min max pcr	result		min max pcr	result
+ *	-   -   -	* (UBR only)	x   -   -	x+
+ *	-   -   *	*		x   -   *	*
+ *	-   -   z	z-		x   -   z	z-
+ *	-   *   -	*		x   *   -	x+
+ *	-   *   *	*		x   *   *	*
+ *	-   *   z	z-		x   *   z	z-
+ *	-   y   -	y-		x   y   -	x+
+ *	-   y   *	y-		x   y   *	y-
+ *	-   y   z	z-		x   y   z	z-
+ *
+ * All non-error cases can be converted with the following simple set of rules:
+ *
+ *   if pcr == z then z-
+ *   else if min == x && pcr == - then x+
+ *     else if max == y then y-
+ *	 else *
+ */
+
+
+int atm_pcr_goal(struct atm_trafprm *tp)
+{
+	if (tp->pcr && tp->pcr != ATM_MAX_PCR) return -tp->pcr;
+	if (tp->min_pcr && !tp->pcr) return tp->min_pcr;
+	if (tp->max_pcr != ATM_MAX_PCR) return -tp->max_pcr;
+	return 0;
+}
+
+
+void sonet_copy_stats(struct k_sonet_stats *from,struct sonet_stats *to)
+{
+#define __HANDLE_ITEM(i) to->i = atomic_read(&from->i)
+	__SONET_ITEMS
+#undef __HANDLE_ITEM
+}
+
+
+void sonet_subtract_stats(struct k_sonet_stats *from,struct sonet_stats *to)
+{
+#define __HANDLE_ITEM(i) atomic_sub(to->i,&from->i)
+	__SONET_ITEMS
+#undef __HANDLE_ITEM
+}
+
+
+EXPORT_SYMBOL(atm_charge);
+EXPORT_SYMBOL(atm_alloc_charge);
+EXPORT_SYMBOL(atm_pcr_goal);
+EXPORT_SYMBOL(sonet_copy_stats);
+EXPORT_SYMBOL(sonet_subtract_stats);
diff --git a/net/atm/br2684.c b/net/atm/br2684.c
new file mode 100644
index 000000000000..e6954cf1459d
--- /dev/null
+++ b/net/atm/br2684.c
@@ -0,0 +1,824 @@
+/*
+Experimental ethernet netdevice using ATM AAL5 as underlying carrier
+(RFC1483 obsoleted by RFC2684) for Linux 2.4
+Author: Marcell GAL, 2000, XDSL Ltd, Hungary
+*/
+
+#include <linux/module.h>
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/etherdevice.h>
+#include <linux/rtnetlink.h>
+#include <linux/ip.h>
+#include <asm/uaccess.h>
+#include <net/arp.h>
+#include <linux/atm.h>
+#include <linux/atmdev.h>
+#include <linux/seq_file.h>
+
+#include <linux/atmbr2684.h>
+
+#include "common.h"
+#include "ipcommon.h"
+
+/*
+ * Define this to use a version of the code which interacts with the higher
+ * layers in a more intellegent way, by always reserving enough space for
+ * our header at the begining of the packet.  However, there may still be
+ * some problems with programs like tcpdump.  In 2.5 we'll sort out what
+ * we need to do to get this perfect.  For now we just will copy the packet
+ * if we need space for the header
+ */
+/* #define FASTER_VERSION */
+
+#ifdef DEBUG
+#define DPRINTK(format, args...) printk(KERN_DEBUG "br2684: " format, ##args)
+#else
+#define DPRINTK(format, args...)
+#endif
+
+#ifdef SKB_DEBUG
+static void skb_debug(const struct sk_buff *skb)
+{
+#define NUM2PRINT 50
+	char buf[NUM2PRINT * 3 + 1];	/* 3 chars per byte */
+	int i = 0;
+	for (i = 0; i < skb->len && i < NUM2PRINT; i++) {
+		sprintf(buf + i * 3, "%2.2x ", 0xff & skb->data[i]);
+	}
+	printk(KERN_DEBUG "br2684: skb: %s\n", buf);
+}
+#else
+#define skb_debug(skb)	do {} while (0)
+#endif
+
+static unsigned char llc_oui_pid_pad[] =
+    { 0xAA, 0xAA, 0x03, 0x00, 0x80, 0xC2, 0x00, 0x07, 0x00, 0x00 };
+#define PADLEN	(2)
+
+enum br2684_encaps {
+	e_vc  = BR2684_ENCAPS_VC,
+	e_llc = BR2684_ENCAPS_LLC,
+};
+
+struct br2684_vcc {
+	struct atm_vcc  *atmvcc;
+	struct net_device *device;
+	/* keep old push,pop functions for chaining */
+	void (*old_push)(struct atm_vcc *vcc,struct sk_buff *skb);
+	/* void (*old_pop)(struct atm_vcc *vcc,struct sk_buff *skb); */
+	enum br2684_encaps encaps;
+	struct list_head brvccs;
+#ifdef CONFIG_ATM_BR2684_IPFILTER
+	struct br2684_filter filter;
+#endif /* CONFIG_ATM_BR2684_IPFILTER */
+#ifndef FASTER_VERSION
+	unsigned copies_needed, copies_failed;
+#endif /* FASTER_VERSION */
+};
+
+struct br2684_dev {
+	struct net_device *net_dev;
+	struct list_head br2684_devs;
+	int number;
+	struct list_head brvccs; /* one device <=> one vcc (before xmas) */
+	struct net_device_stats stats;
+	int mac_was_set;
+};
+
+/*
+ * This lock should be held for writing any time the list of devices or
+ * their attached vcc's could be altered.  It should be held for reading
+ * any time these are being queried.  Note that we sometimes need to
+ * do read-locking under interrupt context, so write locking must block
+ * the current CPU's interrupts
+ */
+static DEFINE_RWLOCK(devs_lock);
+
+static LIST_HEAD(br2684_devs);
+
+static inline struct br2684_dev *BRPRIV(const struct net_device *net_dev)
+{
+	return (struct br2684_dev *) net_dev->priv;
+}
+
+static inline struct net_device *list_entry_brdev(const struct list_head *le)
+{
+	return list_entry(le, struct br2684_dev, br2684_devs)->net_dev;
+}
+
+static inline struct br2684_vcc *BR2684_VCC(const struct atm_vcc *atmvcc)
+{
+	return (struct br2684_vcc *) (atmvcc->user_back);
+}
+
+static inline struct br2684_vcc *list_entry_brvcc(const struct list_head *le)
+{
+	return list_entry(le, struct br2684_vcc, brvccs);
+}
+
+/* Caller should hold read_lock(&devs_lock) */
+static struct net_device *br2684_find_dev(const struct br2684_if_spec *s)
+{
+	struct list_head *lh;
+	struct net_device *net_dev;
+	switch (s->method) {
+	case BR2684_FIND_BYNUM:
+		list_for_each(lh, &br2684_devs) {
+			net_dev = list_entry_brdev(lh);
+			if (BRPRIV(net_dev)->number == s->spec.devnum)
+				return net_dev;
+		}
+		break;
+	case BR2684_FIND_BYIFNAME:
+		list_for_each(lh, &br2684_devs) {
+			net_dev = list_entry_brdev(lh);
+			if (!strncmp(net_dev->name, s->spec.ifname, IFNAMSIZ))
+				return net_dev;
+		}
+		break;
+	}
+	return NULL;
+}
+
+/*
+ * Send a packet out a particular vcc.  Not to useful right now, but paves
+ * the way for multiple vcc's per itf.  Returns true if we can send,
+ * otherwise false
+ */
+static int br2684_xmit_vcc(struct sk_buff *skb, struct br2684_dev *brdev,
+	struct br2684_vcc *brvcc)
+{
+	struct atm_vcc *atmvcc;
+#ifdef FASTER_VERSION
+	if (brvcc->encaps == e_llc)
+		memcpy(skb_push(skb, 8), llc_oui_pid_pad, 8);
+	/* last 2 bytes of llc_oui_pid_pad are managed by header routines;
+	   yes, you got it: 8 + 2 = sizeof(llc_oui_pid_pad)
+	 */
+#else
+	int minheadroom = (brvcc->encaps == e_llc) ? 10 : 2;
+	if (skb_headroom(skb) < minheadroom) {
+		struct sk_buff *skb2 = skb_realloc_headroom(skb, minheadroom);
+		brvcc->copies_needed++;
+		dev_kfree_skb(skb);
+		if (skb2 == NULL) {
+			brvcc->copies_failed++;
+			return 0;
+		}
+		skb = skb2;
+	}
+	skb_push(skb, minheadroom);
+	if (brvcc->encaps == e_llc)
+		memcpy(skb->data, llc_oui_pid_pad, 10);
+	else
+		memset(skb->data, 0, 2);
+#endif /* FASTER_VERSION */
+	skb_debug(skb);
+
+	ATM_SKB(skb)->vcc = atmvcc = brvcc->atmvcc;
+	DPRINTK("atm_skb(%p)->vcc(%p)->dev(%p)\n", skb, atmvcc, atmvcc->dev);
+	if (!atm_may_send(atmvcc, skb->truesize)) {
+		/* we free this here for now, because we cannot know in a higher 
+			layer whether the skb point it supplied wasn't freed yet.
+			now, it always is.
+		*/
+		dev_kfree_skb(skb);
+		return 0;
+		}
+	atomic_add(skb->truesize, &sk_atm(atmvcc)->sk_wmem_alloc);
+	ATM_SKB(skb)->atm_options = atmvcc->atm_options;
+	brdev->stats.tx_packets++;
+	brdev->stats.tx_bytes += skb->len;
+	atmvcc->send(atmvcc, skb);
+	return 1;
+}
+
+static inline struct br2684_vcc *pick_outgoing_vcc(struct sk_buff *skb,
+	struct br2684_dev *brdev)
+{
+	return list_empty(&brdev->brvccs) ? NULL :
+	    list_entry_brvcc(brdev->brvccs.next); /* 1 vcc/dev right now */
+}
+
+static int br2684_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	struct br2684_dev *brdev = BRPRIV(dev);
+	struct br2684_vcc *brvcc;
+
+	DPRINTK("br2684_start_xmit, skb->dst=%p\n", skb->dst);
+	read_lock(&devs_lock);
+	brvcc = pick_outgoing_vcc(skb, brdev);
+	if (brvcc == NULL) {
+		DPRINTK("no vcc attached to dev %s\n", dev->name);
+		brdev->stats.tx_errors++;
+		brdev->stats.tx_carrier_errors++;
+		/* netif_stop_queue(dev); */
+		dev_kfree_skb(skb);
+		read_unlock(&devs_lock);
+		return -EUNATCH;
+	}
+	if (!br2684_xmit_vcc(skb, brdev, brvcc)) {
+		/*
+		 * We should probably use netif_*_queue() here, but that
+		 * involves added complication.  We need to walk before
+		 * we can run
+		 */
+		/* don't free here! this pointer might be no longer valid!
+		dev_kfree_skb(skb);
+		*/
+		brdev->stats.tx_errors++;
+		brdev->stats.tx_fifo_errors++;
+	}
+	read_unlock(&devs_lock);
+	return 0;
+}
+
+static struct net_device_stats *br2684_get_stats(struct net_device *dev)
+{
+	DPRINTK("br2684_get_stats\n");
+	return &BRPRIV(dev)->stats;
+}
+
+#ifdef FASTER_VERSION
+/*
+ * These mirror eth_header and eth_header_cache.  They are not usually
+ * exported for use in modules, so we grab them from net_device
+ * after ether_setup() is done with it.  Bit of a hack.
+ */
+static int (*my_eth_header)(struct sk_buff *, struct net_device *,
+	unsigned short, void *, void *, unsigned);
+static int (*my_eth_header_cache)(struct neighbour *, struct hh_cache *);
+
+static int
+br2684_header(struct sk_buff *skb, struct net_device *dev,
+	      unsigned short type, void *daddr, void *saddr, unsigned len)
+{
+	u16 *pad_before_eth;
+	int t = my_eth_header(skb, dev, type, daddr, saddr, len);
+	if (t > 0) {
+		pad_before_eth = (u16 *) skb_push(skb, 2);
+		*pad_before_eth = 0;
+		return dev->hard_header_len;	/* or return 16; ? */
+	} else
+		return t;
+}
+
+static int
+br2684_header_cache(struct neighbour *neigh, struct hh_cache *hh)
+{
+/* hh_data is 16 bytes long. if encaps is ether-llc we need 24, so
+xmit will add the additional header part in that case */
+	u16 *pad_before_eth = (u16 *)(hh->hh_data);
+	int t = my_eth_header_cache(neigh, hh);
+	DPRINTK("br2684_header_cache, neigh=%p, hh_cache=%p\n", neigh, hh);
+	if (t < 0)
+		return t;
+	else {
+		*pad_before_eth = 0;
+		hh->hh_len = PADLEN + ETH_HLEN;
+	}
+	return 0;
+}
+
+/*
+ * This is similar to eth_type_trans, which cannot be used because of
+ * our dev->hard_header_len
+ */
+static inline unsigned short br_type_trans(struct sk_buff *skb,
+					       struct net_device *dev)
+{
+	struct ethhdr *eth;
+	unsigned char *rawp;
+	eth = eth_hdr(skb);
+
+	if (*eth->h_dest & 1) {
+		if (memcmp(eth->h_dest, dev->broadcast, ETH_ALEN) == 0)
+			skb->pkt_type = PACKET_BROADCAST;
+		else
+			skb->pkt_type = PACKET_MULTICAST;
+	}
+
+	else if (memcmp(eth->h_dest, dev->dev_addr, ETH_ALEN))
+		skb->pkt_type = PACKET_OTHERHOST;
+
+	if (ntohs(eth->h_proto) >= 1536)
+		return eth->h_proto;
+
+	rawp = skb->data;
+
+	/*
+	 * This is a magic hack to spot IPX packets. Older Novell breaks
+	 * the protocol design and runs IPX over 802.3 without an 802.2 LLC
+	 * layer. We look for FFFF which isn't a used 802.2 SSAP/DSAP. This
+	 * won't work for fault tolerant netware but does for the rest.
+	 */
+	if (*(unsigned short *) rawp == 0xFFFF)
+		return htons(ETH_P_802_3);
+
+	/*
+	 * Real 802.2 LLC
+	 */
+	return htons(ETH_P_802_2);
+}
+#endif /* FASTER_VERSION */
+
+/*
+ * We remember when the MAC gets set, so we don't override it later with
+ * the ESI of the ATM card of the first VC
+ */
+static int (*my_eth_mac_addr)(struct net_device *, void *);
+static int br2684_mac_addr(struct net_device *dev, void *p)
+{
+	int err = my_eth_mac_addr(dev, p);
+	if (!err)
+		BRPRIV(dev)->mac_was_set = 1;
+	return err;
+}
+
+#ifdef CONFIG_ATM_BR2684_IPFILTER
+/* this IOCTL is experimental. */
+static int br2684_setfilt(struct atm_vcc *atmvcc, void __user *arg)
+{
+	struct br2684_vcc *brvcc;
+	struct br2684_filter_set fs;
+
+	if (copy_from_user(&fs, arg, sizeof fs))
+		return -EFAULT;
+	if (fs.ifspec.method != BR2684_FIND_BYNOTHING) {
+		/*
+		 * This is really a per-vcc thing, but we can also search
+		 * by device
+		 */
+		struct br2684_dev *brdev;
+		read_lock(&devs_lock);
+		brdev = BRPRIV(br2684_find_dev(&fs.ifspec));
+		if (brdev == NULL || list_empty(&brdev->brvccs) ||
+		    brdev->brvccs.next != brdev->brvccs.prev)  /* >1 VCC */
+			brvcc = NULL;
+		else
+			brvcc = list_entry_brvcc(brdev->brvccs.next);
+		read_unlock(&devs_lock);
+		if (brvcc == NULL)
+			return -ESRCH;
+	} else
+		brvcc = BR2684_VCC(atmvcc);
+	memcpy(&brvcc->filter, &fs.filter, sizeof(brvcc->filter));
+	return 0;
+}
+
+/* Returns 1 if packet should be dropped */
+static inline int
+packet_fails_filter(u16 type, struct br2684_vcc *brvcc, struct sk_buff *skb)
+{
+	if (brvcc->filter.netmask == 0)
+		return 0;			/* no filter in place */
+	if (type == __constant_htons(ETH_P_IP) &&
+	    (((struct iphdr *) (skb->data))->daddr & brvcc->filter.
+	     netmask) == brvcc->filter.prefix)
+		return 0;
+	if (type == __constant_htons(ETH_P_ARP))
+		return 0;
+	/* TODO: we should probably filter ARPs too.. don't want to have
+	 *   them returning values that don't make sense, or is that ok?
+	 */
+	return 1;		/* drop */
+}
+#endif /* CONFIG_ATM_BR2684_IPFILTER */
+
+static void br2684_close_vcc(struct br2684_vcc *brvcc)
+{
+	DPRINTK("removing VCC %p from dev %p\n", brvcc, brvcc->device);
+	write_lock_irq(&devs_lock);
+	list_del(&brvcc->brvccs);
+	write_unlock_irq(&devs_lock);
+	brvcc->atmvcc->user_back = NULL;	/* what about vcc->recvq ??? */
+	brvcc->old_push(brvcc->atmvcc, NULL);	/* pass on the bad news */
+	kfree(brvcc);
+	module_put(THIS_MODULE);
+}
+
+/* when AAL5 PDU comes in: */
+static void br2684_push(struct atm_vcc *atmvcc, struct sk_buff *skb)
+{
+	struct br2684_vcc *brvcc = BR2684_VCC(atmvcc);
+	struct net_device *net_dev = brvcc->device;
+	struct br2684_dev *brdev = BRPRIV(net_dev);
+	int plen = sizeof(llc_oui_pid_pad) + ETH_HLEN;
+
+	DPRINTK("br2684_push\n");
+
+	if (unlikely(skb == NULL)) {
+		/* skb==NULL means VCC is being destroyed */
+		br2684_close_vcc(brvcc);
+		if (list_empty(&brdev->brvccs)) {
+			read_lock(&devs_lock);
+			list_del(&brdev->br2684_devs);
+			read_unlock(&devs_lock);
+			unregister_netdev(net_dev);
+			free_netdev(net_dev);
+		}
+		return;
+	}
+
+	skb_debug(skb);
+	atm_return(atmvcc, skb->truesize);
+	DPRINTK("skb from brdev %p\n", brdev);
+	if (brvcc->encaps == e_llc) {
+		/* let us waste some time for checking the encapsulation.
+		   Note, that only 7 char is checked so frames with a valid FCS
+		   are also accepted (but FCS is not checked of course) */
+		if (memcmp(skb->data, llc_oui_pid_pad, 7)) {
+			brdev->stats.rx_errors++;
+			dev_kfree_skb(skb);
+			return;
+		}
+
+		/* Strip FCS if present */
+		if (skb->len > 7 && skb->data[7] == 0x01)
+			__skb_trim(skb, skb->len - 4);
+	} else {
+		plen = PADLEN + ETH_HLEN;	/* pad, dstmac,srcmac, ethtype */
+		/* first 2 chars should be 0 */
+		if (*((u16 *) (skb->data)) != 0) {
+			brdev->stats.rx_errors++;
+			dev_kfree_skb(skb);
+			return;
+		}
+	}
+	if (skb->len < plen) {
+		brdev->stats.rx_errors++;
+		dev_kfree_skb(skb);	/* dev_ not needed? */
+		return;
+	}
+
+#ifdef FASTER_VERSION
+	/* FIXME: tcpdump shows that pointer to mac header is 2 bytes earlier,
+	   than should be. What else should I set? */
+	skb_pull(skb, plen);
+	skb->mac.raw = ((char *) (skb->data)) - ETH_HLEN;
+	skb->pkt_type = PACKET_HOST;
+#ifdef CONFIG_BR2684_FAST_TRANS
+	skb->protocol = ((u16 *) skb->data)[-1];
+#else				/* some protocols might require this: */
+	skb->protocol = br_type_trans(skb, net_dev);
+#endif /* CONFIG_BR2684_FAST_TRANS */
+#else
+	skb_pull(skb, plen - ETH_HLEN);
+	skb->protocol = eth_type_trans(skb, net_dev);
+#endif /* FASTER_VERSION */
+#ifdef CONFIG_ATM_BR2684_IPFILTER
+	if (unlikely(packet_fails_filter(skb->protocol, brvcc, skb))) {
+		brdev->stats.rx_dropped++;
+		dev_kfree_skb(skb);
+		return;
+	}
+#endif /* CONFIG_ATM_BR2684_IPFILTER */
+	skb->dev = net_dev;
+	ATM_SKB(skb)->vcc = atmvcc;	/* needed ? */
+	DPRINTK("received packet's protocol: %x\n", ntohs(skb->protocol));
+	skb_debug(skb);
+	if (unlikely(!(net_dev->flags & IFF_UP))) {
+		/* sigh, interface is down */
+		brdev->stats.rx_dropped++;
+		dev_kfree_skb(skb);
+		return;
+	}
+	brdev->stats.rx_packets++;
+	brdev->stats.rx_bytes += skb->len;
+	memset(ATM_SKB(skb), 0, sizeof(struct atm_skb_data));
+	netif_rx(skb);
+}
+
+static int br2684_regvcc(struct atm_vcc *atmvcc, void __user *arg)
+{
+/* assign a vcc to a dev
+Note: we do not have explicit unassign, but look at _push()
+*/
+	int err;
+	struct br2684_vcc *brvcc;
+	struct sk_buff_head copy;
+	struct sk_buff *skb;
+	struct br2684_dev *brdev;
+	struct net_device *net_dev;
+	struct atm_backend_br2684 be;
+
+	if (copy_from_user(&be, arg, sizeof be))
+		return -EFAULT;
+	brvcc = kmalloc(sizeof(struct br2684_vcc), GFP_KERNEL);
+	if (!brvcc)
+		return -ENOMEM;
+	memset(brvcc, 0, sizeof(struct br2684_vcc));
+	write_lock_irq(&devs_lock);
+	net_dev = br2684_find_dev(&be.ifspec);
+	if (net_dev == NULL) {
+		printk(KERN_ERR
+		    "br2684: tried to attach to non-existant device\n");
+		err = -ENXIO;
+		goto error;
+	}
+	brdev = BRPRIV(net_dev);
+	if (atmvcc->push == NULL) {
+		err = -EBADFD;
+		goto error;
+	}
+	if (!list_empty(&brdev->brvccs)) {
+		/* Only 1 VCC/dev right now */
+		err = -EEXIST;
+		goto error;
+	}
+	if (be.fcs_in != BR2684_FCSIN_NO || be.fcs_out != BR2684_FCSOUT_NO ||
+	    be.fcs_auto || be.has_vpiid || be.send_padding || (be.encaps !=
+	    BR2684_ENCAPS_VC && be.encaps != BR2684_ENCAPS_LLC) ||
+	    be.min_size != 0) {
+		err = -EINVAL;
+		goto error;
+	}
+	DPRINTK("br2684_regvcc vcc=%p, encaps=%d, brvcc=%p\n", atmvcc, be.encaps,
+		brvcc);
+	if (list_empty(&brdev->brvccs) && !brdev->mac_was_set) {
+		unsigned char *esi = atmvcc->dev->esi;
+		if (esi[0] | esi[1] | esi[2] | esi[3] | esi[4] | esi[5])
+			memcpy(net_dev->dev_addr, esi, net_dev->addr_len);
+		else
+			net_dev->dev_addr[2] = 1;
+	}
+	list_add(&brvcc->brvccs, &brdev->brvccs);
+	write_unlock_irq(&devs_lock);
+	brvcc->device = net_dev;
+	brvcc->atmvcc = atmvcc;
+	atmvcc->user_back = brvcc;
+	brvcc->encaps = (enum br2684_encaps) be.encaps;
+	brvcc->old_push = atmvcc->push;
+	barrier();
+	atmvcc->push = br2684_push;
+	skb_queue_head_init(&copy);
+	skb_migrate(&sk_atm(atmvcc)->sk_receive_queue, &copy);
+	while ((skb = skb_dequeue(&copy)) != NULL) {
+		BRPRIV(skb->dev)->stats.rx_bytes -= skb->len;
+		BRPRIV(skb->dev)->stats.rx_packets--;
+		br2684_push(atmvcc, skb);
+	}
+	__module_get(THIS_MODULE);
+	return 0;
+    error:
+	write_unlock_irq(&devs_lock);
+	kfree(brvcc);
+	return err;
+}
+
+static void br2684_setup(struct net_device *netdev)
+{
+	struct br2684_dev *brdev = BRPRIV(netdev);
+
+	ether_setup(netdev);
+	brdev->net_dev = netdev;
+
+#ifdef FASTER_VERSION
+	my_eth_header = netdev->hard_header;
+	netdev->hard_header = br2684_header;
+	my_eth_header_cache = netdev->hard_header_cache;
+	netdev->hard_header_cache = br2684_header_cache;
+	netdev->hard_header_len = sizeof(llc_oui_pid_pad) + ETH_HLEN;	/* 10 + 14 */
+#endif
+	my_eth_mac_addr = netdev->set_mac_address;
+	netdev->set_mac_address = br2684_mac_addr;
+	netdev->hard_start_xmit = br2684_start_xmit;
+	netdev->get_stats = br2684_get_stats;
+
+	INIT_LIST_HEAD(&brdev->brvccs);
+}
+
+static int br2684_create(void __user *arg)
+{
+	int err;
+	struct net_device *netdev;
+	struct br2684_dev *brdev;
+	struct atm_newif_br2684 ni;
+
+	DPRINTK("br2684_create\n");
+
+	if (copy_from_user(&ni, arg, sizeof ni)) {
+		return -EFAULT;
+	}
+	if (ni.media != BR2684_MEDIA_ETHERNET || ni.mtu != 1500) {
+		return -EINVAL;
+	}
+
+	netdev = alloc_netdev(sizeof(struct br2684_dev),
+			      ni.ifname[0] ? ni.ifname : "nas%d",
+			      br2684_setup);
+	if (!netdev)
+		return -ENOMEM;
+
+	brdev = BRPRIV(netdev);
+
+	DPRINTK("registered netdev %s\n", netdev->name);
+	/* open, stop, do_ioctl ? */
+	err = register_netdev(netdev);
+	if (err < 0) {
+		printk(KERN_ERR "br2684_create: register_netdev failed\n");
+		free_netdev(netdev);
+		return err;
+	}
+
+	write_lock_irq(&devs_lock);
+	brdev->number = list_empty(&br2684_devs) ? 1 :
+	    BRPRIV(list_entry_brdev(br2684_devs.prev))->number + 1;
+	list_add_tail(&brdev->br2684_devs, &br2684_devs);
+	write_unlock_irq(&devs_lock);
+	return 0;
+}
+
+/*
+ * This handles ioctls actually performed on our vcc - we must return
+ * -ENOIOCTLCMD for any unrecognized ioctl
+ */
+static int br2684_ioctl(struct socket *sock, unsigned int cmd,
+	unsigned long arg)
+{
+	struct atm_vcc *atmvcc = ATM_SD(sock);
+	void __user *argp = (void __user *)arg;
+
+	int err;
+	switch(cmd) {
+	case ATM_SETBACKEND:
+	case ATM_NEWBACKENDIF: {
+		atm_backend_t b;
+		err = get_user(b, (atm_backend_t __user *) argp);
+		if (err)
+			return -EFAULT;
+		if (b != ATM_BACKEND_BR2684)
+			return -ENOIOCTLCMD;
+		if (!capable(CAP_NET_ADMIN))
+			return -EPERM;
+		if (cmd == ATM_SETBACKEND)
+			return br2684_regvcc(atmvcc, argp);
+		else
+			return br2684_create(argp);
+		}
+#ifdef CONFIG_ATM_BR2684_IPFILTER
+	case BR2684_SETFILT:
+		if (atmvcc->push != br2684_push)
+			return -ENOIOCTLCMD;
+		if (!capable(CAP_NET_ADMIN))
+			return -EPERM;
+		err = br2684_setfilt(atmvcc, argp);
+		return err;
+#endif /* CONFIG_ATM_BR2684_IPFILTER */
+	}
+	return -ENOIOCTLCMD;
+}
+
+static struct atm_ioctl br2684_ioctl_ops = {
+	.owner	= THIS_MODULE,
+	.ioctl	= br2684_ioctl,
+};
+
+
+#ifdef CONFIG_PROC_FS
+static void *br2684_seq_start(struct seq_file *seq, loff_t *pos)
+{
+	loff_t offs = 0;
+	struct br2684_dev *brd;
+
+	read_lock(&devs_lock);
+
+	list_for_each_entry(brd, &br2684_devs, br2684_devs) {
+		if (offs == *pos)
+			return brd;
+		++offs;
+	}
+	return NULL;
+}
+
+static void *br2684_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	struct br2684_dev *brd = v;
+
+	++*pos;
+
+	brd = list_entry(brd->br2684_devs.next, 
+			 struct br2684_dev, br2684_devs);
+	return (&brd->br2684_devs != &br2684_devs) ? brd : NULL;
+}
+
+static void br2684_seq_stop(struct seq_file *seq, void *v)
+{
+	read_unlock(&devs_lock);
+}
+
+static int br2684_seq_show(struct seq_file *seq, void *v)
+{
+	const struct br2684_dev *brdev = v;
+	const struct net_device *net_dev = brdev->net_dev;
+	const struct br2684_vcc *brvcc;
+
+	seq_printf(seq, "dev %.16s: num=%d, mac=%02X:%02X:"
+		       "%02X:%02X:%02X:%02X (%s)\n", net_dev->name,
+		       brdev->number,
+		       net_dev->dev_addr[0],
+		       net_dev->dev_addr[1],
+		       net_dev->dev_addr[2],
+		       net_dev->dev_addr[3],
+		       net_dev->dev_addr[4],
+		       net_dev->dev_addr[5],
+		       brdev->mac_was_set ? "set" : "auto");
+
+	list_for_each_entry(brvcc, &brdev->brvccs, brvccs) {
+		seq_printf(seq, "  vcc %d.%d.%d: encaps=%s"
+#ifndef FASTER_VERSION
+				    ", failed copies %u/%u"
+#endif /* FASTER_VERSION */
+				    "\n", brvcc->atmvcc->dev->number,
+				    brvcc->atmvcc->vpi, brvcc->atmvcc->vci,
+				    (brvcc->encaps == e_llc) ? "LLC" : "VC"
+#ifndef FASTER_VERSION
+				    , brvcc->copies_failed
+				    , brvcc->copies_needed
+#endif /* FASTER_VERSION */
+				    );
+#ifdef CONFIG_ATM_BR2684_IPFILTER
+#define b1(var, byte)	((u8 *) &brvcc->filter.var)[byte]
+#define bs(var)		b1(var, 0), b1(var, 1), b1(var, 2), b1(var, 3)
+			if (brvcc->filter.netmask != 0)
+				seq_printf(seq, "    filter=%d.%d.%d.%d/"
+						"%d.%d.%d.%d\n",
+						bs(prefix), bs(netmask));
+#undef bs
+#undef b1
+#endif /* CONFIG_ATM_BR2684_IPFILTER */
+	}
+	return 0;
+}
+
+static struct seq_operations br2684_seq_ops = {
+	.start = br2684_seq_start,
+	.next  = br2684_seq_next,
+	.stop  = br2684_seq_stop,
+	.show  = br2684_seq_show,
+};
+
+static int br2684_proc_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &br2684_seq_ops);
+}
+
+static struct file_operations br2684_proc_ops = {
+	.owner   = THIS_MODULE,
+	.open    = br2684_proc_open,
+	.read    = seq_read,
+	.llseek  = seq_lseek,
+	.release = seq_release,
+};
+
+extern struct proc_dir_entry *atm_proc_root;	/* from proc.c */
+#endif
+
+static int __init br2684_init(void)
+{
+#ifdef CONFIG_PROC_FS
+	struct proc_dir_entry *p;
+	if ((p = create_proc_entry("br2684", 0, atm_proc_root)) == NULL)
+		return -ENOMEM;
+	p->proc_fops = &br2684_proc_ops;
+#endif
+	register_atm_ioctl(&br2684_ioctl_ops);
+	return 0;
+}
+
+static void __exit br2684_exit(void)
+{
+	struct net_device *net_dev;
+	struct br2684_dev *brdev;
+	struct br2684_vcc *brvcc;
+	deregister_atm_ioctl(&br2684_ioctl_ops);
+
+#ifdef CONFIG_PROC_FS
+	remove_proc_entry("br2684", atm_proc_root);
+#endif
+
+	while (!list_empty(&br2684_devs)) {
+		net_dev = list_entry_brdev(br2684_devs.next);
+		brdev = BRPRIV(net_dev);
+		while (!list_empty(&brdev->brvccs)) {
+			brvcc = list_entry_brvcc(brdev->brvccs.next);
+			br2684_close_vcc(brvcc);
+		}
+
+		list_del(&brdev->br2684_devs);
+		unregister_netdev(net_dev);
+		free_netdev(net_dev);
+	}
+}
+
+module_init(br2684_init);
+module_exit(br2684_exit);
+
+MODULE_AUTHOR("Marcell GAL");
+MODULE_DESCRIPTION("RFC2684 bridged protocols over ATM/AAL5");
+MODULE_LICENSE("GPL");
diff --git a/net/atm/clip.c b/net/atm/clip.c
new file mode 100644
index 000000000000..28dab55a4387
--- /dev/null
+++ b/net/atm/clip.c
@@ -0,0 +1,1045 @@
+/* net/atm/clip.c - RFC1577 Classical IP over ATM */
+
+/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
+
+
+#include <linux/config.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/kernel.h> /* for UINT_MAX */
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/wait.h>
+#include <linux/timer.h>
+#include <linux/if_arp.h> /* for some manifest constants */
+#include <linux/notifier.h>
+#include <linux/atm.h>
+#include <linux/atmdev.h>
+#include <linux/atmclip.h>
+#include <linux/atmarp.h>
+#include <linux/ip.h> /* for net/route.h */
+#include <linux/in.h> /* for struct sockaddr_in */
+#include <linux/if.h> /* for IFF_UP */
+#include <linux/inetdevice.h>
+#include <linux/bitops.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/rcupdate.h>
+#include <linux/jhash.h>
+#include <net/route.h> /* for struct rtable and routing */
+#include <net/icmp.h> /* icmp_send */
+#include <asm/param.h> /* for HZ */
+#include <asm/byteorder.h> /* for htons etc. */
+#include <asm/system.h> /* save/restore_flags */
+#include <asm/uaccess.h>
+#include <asm/atomic.h>
+
+#include "common.h"
+#include "resources.h"
+#include "ipcommon.h"
+#include <net/atmclip.h>
+
+
+#if 0
+#define DPRINTK(format,args...) printk(format,##args)
+#else
+#define DPRINTK(format,args...)
+#endif
+
+
+static struct net_device *clip_devs;
+static struct atm_vcc *atmarpd;
+static struct neigh_table clip_tbl;
+static struct timer_list idle_timer;
+static int start_timer = 1;
+
+
+static int to_atmarpd(enum atmarp_ctrl_type type,int itf,unsigned long ip)
+{
+	struct sock *sk;
+	struct atmarp_ctrl *ctrl;
+	struct sk_buff *skb;
+
+	DPRINTK("to_atmarpd(%d)\n",type);
+	if (!atmarpd) return -EUNATCH;
+	skb = alloc_skb(sizeof(struct atmarp_ctrl),GFP_ATOMIC);
+	if (!skb) return -ENOMEM;
+	ctrl = (struct atmarp_ctrl *) skb_put(skb,sizeof(struct atmarp_ctrl));
+	ctrl->type = type;
+	ctrl->itf_num = itf;
+	ctrl->ip = ip;
+	atm_force_charge(atmarpd,skb->truesize);
+
+	sk = sk_atm(atmarpd);
+	skb_queue_tail(&sk->sk_receive_queue, skb);
+	sk->sk_data_ready(sk, skb->len);
+	return 0;
+}
+
+
+static void link_vcc(struct clip_vcc *clip_vcc,struct atmarp_entry *entry)
+{
+	DPRINTK("link_vcc %p to entry %p (neigh %p)\n",clip_vcc,entry,
+	    entry->neigh);
+	clip_vcc->entry = entry;
+	clip_vcc->xoff = 0; /* @@@ may overrun buffer by one packet */
+	clip_vcc->next = entry->vccs;
+	entry->vccs = clip_vcc;
+	entry->neigh->used = jiffies;
+}
+
+
+static void unlink_clip_vcc(struct clip_vcc *clip_vcc)
+{
+	struct atmarp_entry *entry = clip_vcc->entry;
+	struct clip_vcc **walk;
+
+	if (!entry) {
+		printk(KERN_CRIT "!clip_vcc->entry (clip_vcc %p)\n",clip_vcc);
+		return;
+	}
+	spin_lock_bh(&entry->neigh->dev->xmit_lock);	/* block clip_start_xmit() */
+	entry->neigh->used = jiffies;
+	for (walk = &entry->vccs; *walk; walk = &(*walk)->next)
+		if (*walk == clip_vcc) {
+			int error;
+
+			*walk = clip_vcc->next; /* atomic */
+			clip_vcc->entry = NULL;
+			if (clip_vcc->xoff)
+				netif_wake_queue(entry->neigh->dev);
+			if (entry->vccs)
+				goto out;
+			entry->expires = jiffies-1;
+				/* force resolution or expiration */
+			error = neigh_update(entry->neigh, NULL, NUD_NONE,
+					     NEIGH_UPDATE_F_ADMIN);
+			if (error)
+				printk(KERN_CRIT "unlink_clip_vcc: "
+				    "neigh_update failed with %d\n",error);
+			goto out;
+		}
+	printk(KERN_CRIT "ATMARP: unlink_clip_vcc failed (entry %p, vcc "
+	  "0x%p)\n",entry,clip_vcc);
+out:
+	spin_unlock_bh(&entry->neigh->dev->xmit_lock);
+}
+
+/* The neighbour entry n->lock is held. */
+static int neigh_check_cb(struct neighbour *n)
+{
+	struct atmarp_entry *entry = NEIGH2ENTRY(n);
+	struct clip_vcc *cv;
+
+	for (cv = entry->vccs; cv; cv = cv->next) {
+		unsigned long exp = cv->last_use + cv->idle_timeout;
+
+		if (cv->idle_timeout && time_after(jiffies, exp)) {
+			DPRINTK("releasing vcc %p->%p of entry %p\n",
+				cv, cv->vcc, entry);
+			vcc_release_async(cv->vcc, -ETIMEDOUT);
+		}
+	}
+
+	if (entry->vccs || time_before(jiffies, entry->expires))
+		return 0;
+
+	if (atomic_read(&n->refcnt) > 1) {
+		struct sk_buff *skb;
+
+		DPRINTK("destruction postponed with ref %d\n",
+			atomic_read(&n->refcnt));
+
+		while ((skb = skb_dequeue(&n->arp_queue)) != NULL) 
+			dev_kfree_skb(skb);
+
+		return 0;
+	}
+
+	DPRINTK("expired neigh %p\n",n);
+	return 1;
+}
+
+static void idle_timer_check(unsigned long dummy)
+{
+	write_lock(&clip_tbl.lock);
+	__neigh_for_each_release(&clip_tbl, neigh_check_cb);
+	mod_timer(&idle_timer, jiffies+CLIP_CHECK_INTERVAL*HZ);
+	write_unlock(&clip_tbl.lock);
+}
+
+static int clip_arp_rcv(struct sk_buff *skb)
+{
+	struct atm_vcc *vcc;
+
+	DPRINTK("clip_arp_rcv\n");
+	vcc = ATM_SKB(skb)->vcc;
+	if (!vcc || !atm_charge(vcc,skb->truesize)) {
+		dev_kfree_skb_any(skb);
+		return 0;
+	}
+	DPRINTK("pushing to %p\n",vcc);
+	DPRINTK("using %p\n",CLIP_VCC(vcc)->old_push);
+	CLIP_VCC(vcc)->old_push(vcc,skb);
+	return 0;
+}
+
+static const unsigned char llc_oui[] = {
+	0xaa,	/* DSAP: non-ISO */
+	0xaa,	/* SSAP: non-ISO */
+	0x03,	/* Ctrl: Unnumbered Information Command PDU */
+	0x00,	/* OUI: EtherType */
+	0x00,
+	0x00 };
+
+static void clip_push(struct atm_vcc *vcc,struct sk_buff *skb)
+{
+	struct clip_vcc *clip_vcc = CLIP_VCC(vcc);
+
+	DPRINTK("clip push\n");
+	if (!skb) {
+		DPRINTK("removing VCC %p\n",clip_vcc);
+		if (clip_vcc->entry) unlink_clip_vcc(clip_vcc);
+		clip_vcc->old_push(vcc,NULL); /* pass on the bad news */
+		kfree(clip_vcc);
+		return;
+	}
+	atm_return(vcc,skb->truesize);
+	skb->dev = clip_vcc->entry ? clip_vcc->entry->neigh->dev : clip_devs;
+		/* clip_vcc->entry == NULL if we don't have an IP address yet */
+	if (!skb->dev) {
+		dev_kfree_skb_any(skb);
+		return;
+	}
+	ATM_SKB(skb)->vcc = vcc;
+	skb->mac.raw = skb->data;
+	if (!clip_vcc->encap || skb->len < RFC1483LLC_LEN || memcmp(skb->data,
+	    llc_oui,sizeof(llc_oui))) skb->protocol = htons(ETH_P_IP);
+	else {
+		skb->protocol = ((u16 *) skb->data)[3];
+		skb_pull(skb,RFC1483LLC_LEN);
+		if (skb->protocol == htons(ETH_P_ARP)) {
+			PRIV(skb->dev)->stats.rx_packets++;
+			PRIV(skb->dev)->stats.rx_bytes += skb->len;
+			clip_arp_rcv(skb);
+			return;
+		}
+	}
+	clip_vcc->last_use = jiffies;
+	PRIV(skb->dev)->stats.rx_packets++;
+	PRIV(skb->dev)->stats.rx_bytes += skb->len;
+	memset(ATM_SKB(skb), 0, sizeof(struct atm_skb_data));
+	netif_rx(skb);
+}
+
+
+/*
+ * Note: these spinlocks _must_not_ block on non-SMP. The only goal is that
+ * clip_pop is atomic with respect to the critical section in clip_start_xmit.
+ */
+
+
+static void clip_pop(struct atm_vcc *vcc,struct sk_buff *skb)
+{
+	struct clip_vcc *clip_vcc = CLIP_VCC(vcc);
+	struct net_device *dev = skb->dev;
+	int old;
+	unsigned long flags;
+
+	DPRINTK("clip_pop(vcc %p)\n",vcc);
+	clip_vcc->old_pop(vcc,skb);
+	/* skb->dev == NULL in outbound ARP packets */
+	if (!dev) return;
+	spin_lock_irqsave(&PRIV(dev)->xoff_lock,flags);
+	if (atm_may_send(vcc,0)) {
+		old = xchg(&clip_vcc->xoff,0);
+		if (old) netif_wake_queue(dev);
+	}
+	spin_unlock_irqrestore(&PRIV(dev)->xoff_lock,flags);
+}
+
+
+static void clip_neigh_destroy(struct neighbour *neigh)
+{
+	DPRINTK("clip_neigh_destroy (neigh %p)\n",neigh);
+	if (NEIGH2ENTRY(neigh)->vccs)
+		printk(KERN_CRIT "clip_neigh_destroy: vccs != NULL !!!\n");
+	NEIGH2ENTRY(neigh)->vccs = (void *) 0xdeadbeef;
+}
+
+
+static void clip_neigh_solicit(struct neighbour *neigh,struct sk_buff *skb)
+{
+	DPRINTK("clip_neigh_solicit (neigh %p, skb %p)\n",neigh,skb);
+	to_atmarpd(act_need,PRIV(neigh->dev)->number,NEIGH2ENTRY(neigh)->ip);
+}
+
+
+static void clip_neigh_error(struct neighbour *neigh,struct sk_buff *skb)
+{
+#ifndef CONFIG_ATM_CLIP_NO_ICMP
+	icmp_send(skb,ICMP_DEST_UNREACH,ICMP_HOST_UNREACH,0);
+#endif
+	kfree_skb(skb);
+}
+
+
+static struct neigh_ops clip_neigh_ops = {
+	.family =		AF_INET,
+	.destructor =		clip_neigh_destroy,
+	.solicit =		clip_neigh_solicit,
+	.error_report =		clip_neigh_error,
+	.output =		dev_queue_xmit,
+	.connected_output =	dev_queue_xmit,
+	.hh_output =		dev_queue_xmit,
+	.queue_xmit =		dev_queue_xmit,
+};
+
+
+static int clip_constructor(struct neighbour *neigh)
+{
+	struct atmarp_entry *entry = NEIGH2ENTRY(neigh);
+	struct net_device *dev = neigh->dev;
+	struct in_device *in_dev;
+	struct neigh_parms *parms;
+
+	DPRINTK("clip_constructor (neigh %p, entry %p)\n",neigh,entry);
+	neigh->type = inet_addr_type(entry->ip);
+	if (neigh->type != RTN_UNICAST) return -EINVAL;
+
+	rcu_read_lock();
+	in_dev = rcu_dereference(__in_dev_get(dev));
+	if (!in_dev) {
+		rcu_read_unlock();
+		return -EINVAL;
+	}
+
+	parms = in_dev->arp_parms;
+	__neigh_parms_put(neigh->parms);
+	neigh->parms = neigh_parms_clone(parms);
+	rcu_read_unlock();
+
+	neigh->ops = &clip_neigh_ops;
+	neigh->output = neigh->nud_state & NUD_VALID ?
+	    neigh->ops->connected_output : neigh->ops->output;
+	entry->neigh = neigh;
+	entry->vccs = NULL;
+	entry->expires = jiffies-1;
+	return 0;
+}
+
+static u32 clip_hash(const void *pkey, const struct net_device *dev)
+{
+	return jhash_2words(*(u32 *)pkey, dev->ifindex, clip_tbl.hash_rnd);
+}
+
+static struct neigh_table clip_tbl = {
+	.family 	= AF_INET,
+	.entry_size 	= sizeof(struct neighbour)+sizeof(struct atmarp_entry),
+	.key_len 	= 4,
+	.hash 		= clip_hash,
+	.constructor 	= clip_constructor,
+	.id 		= "clip_arp_cache",
+
+	/* parameters are copied from ARP ... */
+	.parms = {
+		.tbl 			= &clip_tbl,
+		.base_reachable_time 	= 30 * HZ,
+		.retrans_time 		= 1 * HZ,
+		.gc_staletime 		= 60 * HZ,
+		.reachable_time 	= 30 * HZ,
+		.delay_probe_time 	= 5 * HZ,
+		.queue_len 		= 3,
+		.ucast_probes 		= 3,
+		.mcast_probes 		= 3,
+		.anycast_delay 		= 1 * HZ,
+		.proxy_delay 		= (8 * HZ) / 10,
+		.proxy_qlen 		= 64,
+		.locktime 		= 1 * HZ,
+	},
+	.gc_interval 	= 30 * HZ,
+	.gc_thresh1 	= 128,
+	.gc_thresh2 	= 512,
+	.gc_thresh3 	= 1024,
+};
+
+
+/* @@@ copy bh locking from arp.c -- need to bh-enable atm code before */
+
+/*
+ * We play with the resolve flag: 0 and 1 have the usual meaning, but -1 means
+ * to allocate the neighbour entry but not to ask atmarpd for resolution. Also,
+ * don't increment the usage count. This is used to create entries in
+ * clip_setentry.
+ */
+
+
+static int clip_encap(struct atm_vcc *vcc,int mode)
+{
+	CLIP_VCC(vcc)->encap = mode;
+	return 0;
+}
+
+
+static int clip_start_xmit(struct sk_buff *skb,struct net_device *dev)
+{
+	struct clip_priv *clip_priv = PRIV(dev);
+	struct atmarp_entry *entry;
+	struct atm_vcc *vcc;
+	int old;
+	unsigned long flags;
+
+	DPRINTK("clip_start_xmit (skb %p)\n",skb);
+	if (!skb->dst) {
+		printk(KERN_ERR "clip_start_xmit: skb->dst == NULL\n");
+		dev_kfree_skb(skb);
+		clip_priv->stats.tx_dropped++;
+		return 0;
+	}
+	if (!skb->dst->neighbour) {
+#if 0
+		skb->dst->neighbour = clip_find_neighbour(skb->dst,1);
+		if (!skb->dst->neighbour) {
+			dev_kfree_skb(skb); /* lost that one */
+			clip_priv->stats.tx_dropped++;
+			return 0;
+		}
+#endif
+		printk(KERN_ERR "clip_start_xmit: NO NEIGHBOUR !\n");
+		dev_kfree_skb(skb);
+		clip_priv->stats.tx_dropped++;
+		return 0;
+	}
+	entry = NEIGH2ENTRY(skb->dst->neighbour);
+	if (!entry->vccs) {
+		if (time_after(jiffies, entry->expires)) {
+			/* should be resolved */
+			entry->expires = jiffies+ATMARP_RETRY_DELAY*HZ;
+			to_atmarpd(act_need,PRIV(dev)->number,entry->ip);
+		}
+		if (entry->neigh->arp_queue.qlen < ATMARP_MAX_UNRES_PACKETS)
+			skb_queue_tail(&entry->neigh->arp_queue,skb);
+		else {
+			dev_kfree_skb(skb);
+			clip_priv->stats.tx_dropped++;
+		}
+		return 0;
+	}
+	DPRINTK("neigh %p, vccs %p\n",entry,entry->vccs);
+	ATM_SKB(skb)->vcc = vcc = entry->vccs->vcc;
+	DPRINTK("using neighbour %p, vcc %p\n",skb->dst->neighbour,vcc);
+	if (entry->vccs->encap) {
+		void *here;
+
+		here = skb_push(skb,RFC1483LLC_LEN);
+		memcpy(here,llc_oui,sizeof(llc_oui));
+		((u16 *) here)[3] = skb->protocol;
+	}
+	atomic_add(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc);
+	ATM_SKB(skb)->atm_options = vcc->atm_options;
+	entry->vccs->last_use = jiffies;
+	DPRINTK("atm_skb(%p)->vcc(%p)->dev(%p)\n",skb,vcc,vcc->dev);
+	old = xchg(&entry->vccs->xoff,1); /* assume XOFF ... */
+	if (old) {
+		printk(KERN_WARNING "clip_start_xmit: XOFF->XOFF transition\n");
+		return 0;
+	}
+	clip_priv->stats.tx_packets++;
+	clip_priv->stats.tx_bytes += skb->len;
+	(void) vcc->send(vcc,skb);
+	if (atm_may_send(vcc,0)) {
+		entry->vccs->xoff = 0;
+		return 0;
+	}
+	spin_lock_irqsave(&clip_priv->xoff_lock,flags);
+	netif_stop_queue(dev); /* XOFF -> throttle immediately */
+	barrier();
+	if (!entry->vccs->xoff)
+		netif_start_queue(dev);
+		/* Oh, we just raced with clip_pop. netif_start_queue should be
+		   good enough, because nothing should really be asleep because
+		   of the brief netif_stop_queue. If this isn't true or if it
+		   changes, use netif_wake_queue instead. */
+	spin_unlock_irqrestore(&clip_priv->xoff_lock,flags);
+	return 0;
+}
+
+
+static struct net_device_stats *clip_get_stats(struct net_device *dev)
+{
+	return &PRIV(dev)->stats;
+}
+
+
+static int clip_mkip(struct atm_vcc *vcc,int timeout)
+{
+	struct clip_vcc *clip_vcc;
+	struct sk_buff_head copy;
+	struct sk_buff *skb;
+
+	if (!vcc->push) return -EBADFD;
+	clip_vcc = kmalloc(sizeof(struct clip_vcc),GFP_KERNEL);
+	if (!clip_vcc) return -ENOMEM;
+	DPRINTK("mkip clip_vcc %p vcc %p\n",clip_vcc,vcc);
+	clip_vcc->vcc = vcc;
+	vcc->user_back = clip_vcc;
+	set_bit(ATM_VF_IS_CLIP, &vcc->flags);
+	clip_vcc->entry = NULL;
+	clip_vcc->xoff = 0;
+	clip_vcc->encap = 1;
+	clip_vcc->last_use = jiffies;
+	clip_vcc->idle_timeout = timeout*HZ;
+	clip_vcc->old_push = vcc->push;
+	clip_vcc->old_pop = vcc->pop;
+	vcc->push = clip_push;
+	vcc->pop = clip_pop;
+	skb_queue_head_init(&copy);
+	skb_migrate(&sk_atm(vcc)->sk_receive_queue, &copy);
+	/* re-process everything received between connection setup and MKIP */
+	while ((skb = skb_dequeue(&copy)) != NULL)
+		if (!clip_devs) {
+			atm_return(vcc,skb->truesize);
+			kfree_skb(skb);
+		}
+		else {
+			unsigned int len = skb->len;
+
+			clip_push(vcc,skb);
+			PRIV(skb->dev)->stats.rx_packets--;
+			PRIV(skb->dev)->stats.rx_bytes -= len;
+		}
+	return 0;
+}
+
+
+static int clip_setentry(struct atm_vcc *vcc,u32 ip)
+{
+	struct neighbour *neigh;
+	struct atmarp_entry *entry;
+	int error;
+	struct clip_vcc *clip_vcc;
+	struct flowi fl = { .nl_u = { .ip4_u = { .daddr = ip, .tos = 1 } } };
+	struct rtable *rt;
+
+	if (vcc->push != clip_push) {
+		printk(KERN_WARNING "clip_setentry: non-CLIP VCC\n");
+		return -EBADF;
+	}
+	clip_vcc = CLIP_VCC(vcc);
+	if (!ip) {
+		if (!clip_vcc->entry) {
+			printk(KERN_ERR "hiding hidden ATMARP entry\n");
+			return 0;
+		}
+		DPRINTK("setentry: remove\n");
+		unlink_clip_vcc(clip_vcc);
+		return 0;
+	}
+	error = ip_route_output_key(&rt,&fl);
+	if (error) return error;
+	neigh = __neigh_lookup(&clip_tbl,&ip,rt->u.dst.dev,1);
+	ip_rt_put(rt);
+	if (!neigh)
+		return -ENOMEM;
+	entry = NEIGH2ENTRY(neigh);
+	if (entry != clip_vcc->entry) {
+		if (!clip_vcc->entry) DPRINTK("setentry: add\n");
+		else {
+			DPRINTK("setentry: update\n");
+			unlink_clip_vcc(clip_vcc);
+		}
+		link_vcc(clip_vcc,entry);
+	}
+	error = neigh_update(neigh, llc_oui, NUD_PERMANENT, 
+			     NEIGH_UPDATE_F_OVERRIDE|NEIGH_UPDATE_F_ADMIN);
+	neigh_release(neigh);
+	return error;
+}
+
+
+static void clip_setup(struct net_device *dev)
+{
+	dev->hard_start_xmit = clip_start_xmit;
+	/* sg_xmit ... */
+	dev->get_stats = clip_get_stats;
+	dev->type = ARPHRD_ATM;
+	dev->hard_header_len = RFC1483LLC_LEN;
+	dev->mtu = RFC1626_MTU;
+	dev->tx_queue_len = 100; /* "normal" queue (packets) */
+	    /* When using a "real" qdisc, the qdisc determines the queue */
+	    /* length. tx_queue_len is only used for the default case, */
+	    /* without any more elaborate queuing. 100 is a reasonable */
+	    /* compromise between decent burst-tolerance and protection */
+	    /* against memory hogs. */
+}
+
+
+static int clip_create(int number)
+{
+	struct net_device *dev;
+	struct clip_priv *clip_priv;
+	int error;
+
+	if (number != -1) {
+		for (dev = clip_devs; dev; dev = PRIV(dev)->next)
+			if (PRIV(dev)->number == number) return -EEXIST;
+	}
+	else {
+		number = 0;
+		for (dev = clip_devs; dev; dev = PRIV(dev)->next)
+			if (PRIV(dev)->number >= number)
+				number = PRIV(dev)->number+1;
+	}
+	dev = alloc_netdev(sizeof(struct clip_priv), "", clip_setup);
+	if (!dev)
+		return -ENOMEM;
+	clip_priv = PRIV(dev);
+	sprintf(dev->name,"atm%d",number);
+	spin_lock_init(&clip_priv->xoff_lock);
+	clip_priv->number = number;
+	error = register_netdev(dev);
+	if (error) {
+		free_netdev(dev);
+		return error;
+	}
+	clip_priv->next = clip_devs;
+	clip_devs = dev;
+	DPRINTK("registered (net:%s)\n",dev->name);
+	return number;
+}
+
+
+static int clip_device_event(struct notifier_block *this,unsigned long event,
+    void *dev)
+{
+	/* ignore non-CLIP devices */
+	if (((struct net_device *) dev)->type != ARPHRD_ATM ||
+	    ((struct net_device *) dev)->hard_start_xmit != clip_start_xmit)
+		return NOTIFY_DONE;
+	switch (event) {
+		case NETDEV_UP:
+			DPRINTK("clip_device_event NETDEV_UP\n");
+			(void) to_atmarpd(act_up,PRIV(dev)->number,0);
+			break;
+		case NETDEV_GOING_DOWN:
+			DPRINTK("clip_device_event NETDEV_DOWN\n");
+			(void) to_atmarpd(act_down,PRIV(dev)->number,0);
+			break;
+		case NETDEV_CHANGE:
+		case NETDEV_CHANGEMTU:
+			DPRINTK("clip_device_event NETDEV_CHANGE*\n");
+			(void) to_atmarpd(act_change,PRIV(dev)->number,0);
+			break;
+		case NETDEV_REBOOT:
+		case NETDEV_REGISTER:
+		case NETDEV_DOWN:
+			DPRINTK("clip_device_event %ld\n",event);
+			/* ignore */
+			break;
+		default:
+			printk(KERN_WARNING "clip_device_event: unknown event "
+			    "%ld\n",event);
+			break;
+	}
+	return NOTIFY_DONE;
+}
+
+
+static int clip_inet_event(struct notifier_block *this,unsigned long event,
+    void *ifa)
+{
+	struct in_device *in_dev;
+
+	in_dev = ((struct in_ifaddr *) ifa)->ifa_dev;
+	if (!in_dev || !in_dev->dev) {
+		printk(KERN_WARNING "clip_inet_event: no device\n");
+		return NOTIFY_DONE;
+	}
+	/*
+	 * Transitions are of the down-change-up type, so it's sufficient to
+	 * handle the change on up.
+	 */
+	if (event != NETDEV_UP) return NOTIFY_DONE;
+	return clip_device_event(this,NETDEV_CHANGE,in_dev->dev);
+}
+
+
+static struct notifier_block clip_dev_notifier = {
+	clip_device_event,
+	NULL,
+	0
+};
+
+
+
+static struct notifier_block clip_inet_notifier = {
+	clip_inet_event,
+	NULL,
+	0
+};
+
+
+
+static void atmarpd_close(struct atm_vcc *vcc)
+{
+	DPRINTK("atmarpd_close\n");
+	atmarpd = NULL; /* assumed to be atomic */
+	barrier();
+	unregister_inetaddr_notifier(&clip_inet_notifier);
+	unregister_netdevice_notifier(&clip_dev_notifier);
+	if (skb_peek(&sk_atm(vcc)->sk_receive_queue))
+		printk(KERN_ERR "atmarpd_close: closing with requests "
+		    "pending\n");
+	skb_queue_purge(&sk_atm(vcc)->sk_receive_queue);
+	DPRINTK("(done)\n");
+	module_put(THIS_MODULE);
+}
+
+
+static struct atmdev_ops atmarpd_dev_ops = {
+	.close = atmarpd_close
+};
+
+
+static struct atm_dev atmarpd_dev = {
+	.ops =			&atmarpd_dev_ops,
+	.type =			"arpd",
+	.number = 		999,
+	.lock =			SPIN_LOCK_UNLOCKED
+};
+
+
+static int atm_init_atmarp(struct atm_vcc *vcc)
+{
+	if (atmarpd) return -EADDRINUSE;
+	if (start_timer) {
+		start_timer = 0;
+		init_timer(&idle_timer);
+		idle_timer.expires = jiffies+CLIP_CHECK_INTERVAL*HZ;
+		idle_timer.function = idle_timer_check;
+		add_timer(&idle_timer);
+	}
+	atmarpd = vcc;
+	set_bit(ATM_VF_META,&vcc->flags);
+	set_bit(ATM_VF_READY,&vcc->flags);
+	    /* allow replies and avoid getting closed if signaling dies */
+	vcc->dev = &atmarpd_dev;
+	vcc_insert_socket(sk_atm(vcc));
+	vcc->push = NULL;
+	vcc->pop = NULL; /* crash */
+	vcc->push_oam = NULL; /* crash */
+	if (register_netdevice_notifier(&clip_dev_notifier))
+		printk(KERN_ERR "register_netdevice_notifier failed\n");
+	if (register_inetaddr_notifier(&clip_inet_notifier))
+		printk(KERN_ERR "register_inetaddr_notifier failed\n");
+	return 0;
+}
+
+static int clip_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
+{
+	struct atm_vcc *vcc = ATM_SD(sock);
+	int err = 0;
+
+	switch (cmd) {
+		case SIOCMKCLIP:
+		case ATMARPD_CTRL:
+		case ATMARP_MKIP:
+		case ATMARP_SETENTRY:
+		case ATMARP_ENCAP:
+			if (!capable(CAP_NET_ADMIN))
+				return -EPERM;
+			break;
+		default:
+			return -ENOIOCTLCMD;
+	}
+
+	switch (cmd) {
+		case SIOCMKCLIP:
+			err = clip_create(arg);
+			break;
+		case ATMARPD_CTRL:
+			err = atm_init_atmarp(vcc);
+			if (!err) {
+				sock->state = SS_CONNECTED;
+				__module_get(THIS_MODULE);
+			}
+			break;
+		case ATMARP_MKIP:
+			err = clip_mkip(vcc ,arg);
+			break;
+		case ATMARP_SETENTRY:
+			err = clip_setentry(vcc, arg);
+			break;
+		case ATMARP_ENCAP:
+			err = clip_encap(vcc, arg);
+			break;
+	}
+	return err;
+}
+
+static struct atm_ioctl clip_ioctl_ops = {
+	.owner 	= THIS_MODULE,
+	.ioctl	= clip_ioctl,
+};
+
+#ifdef CONFIG_PROC_FS
+
+static void svc_addr(struct seq_file *seq, struct sockaddr_atmsvc *addr)
+{
+	static int code[] = { 1,2,10,6,1,0 };
+	static int e164[] = { 1,8,4,6,1,0 };
+
+	if (*addr->sas_addr.pub) {
+		seq_printf(seq, "%s", addr->sas_addr.pub);
+		if (*addr->sas_addr.prv)
+			seq_putc(seq, '+');
+	} else if (!*addr->sas_addr.prv) {
+		seq_printf(seq, "%s", "(none)");
+		return;
+	}
+	if (*addr->sas_addr.prv) {
+		unsigned char *prv = addr->sas_addr.prv;
+		int *fields;
+		int i, j;
+
+		fields = *prv == ATM_AFI_E164 ? e164 : code;
+		for (i = 0; fields[i]; i++) {
+			for (j = fields[i]; j; j--)
+				seq_printf(seq, "%02X", *prv++);
+			if (fields[i+1])
+				seq_putc(seq, '.');
+		}
+	}
+}
+
+/* This means the neighbour entry has no attached VCC objects. */
+#define SEQ_NO_VCC_TOKEN	((void *) 2)
+
+static void atmarp_info(struct seq_file *seq, struct net_device *dev,
+			struct atmarp_entry *entry, struct clip_vcc *clip_vcc)
+{
+	unsigned long exp;
+	char buf[17];
+	int svc, llc, off;
+
+	svc = ((clip_vcc == SEQ_NO_VCC_TOKEN) ||
+	       (sk_atm(clip_vcc->vcc)->sk_family == AF_ATMSVC));
+
+	llc = ((clip_vcc == SEQ_NO_VCC_TOKEN) ||
+	       clip_vcc->encap);
+
+	if (clip_vcc == SEQ_NO_VCC_TOKEN)
+		exp = entry->neigh->used;
+	else
+		exp = clip_vcc->last_use;
+
+	exp = (jiffies - exp) / HZ;
+
+	seq_printf(seq, "%-6s%-4s%-4s%5ld ",
+		   dev->name,
+		   svc ? "SVC" : "PVC",
+		   llc ? "LLC" : "NULL",
+		   exp);
+
+	off = scnprintf(buf, sizeof(buf) - 1, "%d.%d.%d.%d",
+			NIPQUAD(entry->ip));
+	while (off < 16)
+		buf[off++] = ' ';
+	buf[off] = '\0';
+	seq_printf(seq, "%s", buf);
+
+	if (clip_vcc == SEQ_NO_VCC_TOKEN) {
+		if (time_before(jiffies, entry->expires))
+			seq_printf(seq, "(resolving)\n");
+		else
+			seq_printf(seq, "(expired, ref %d)\n",
+				   atomic_read(&entry->neigh->refcnt));
+	} else if (!svc) {
+		seq_printf(seq, "%d.%d.%d\n",
+			   clip_vcc->vcc->dev->number,
+			   clip_vcc->vcc->vpi,
+			   clip_vcc->vcc->vci);
+	} else {
+		svc_addr(seq, &clip_vcc->vcc->remote);
+		seq_putc(seq, '\n');
+	}
+}
+
+struct clip_seq_state {
+	/* This member must be first. */
+	struct neigh_seq_state ns;
+
+	/* Local to clip specific iteration. */
+	struct clip_vcc *vcc;
+};
+
+static struct clip_vcc *clip_seq_next_vcc(struct atmarp_entry *e,
+					  struct clip_vcc *curr)
+{
+	if (!curr) {
+		curr = e->vccs;
+		if (!curr)
+			return SEQ_NO_VCC_TOKEN;
+		return curr;
+	}
+	if (curr == SEQ_NO_VCC_TOKEN)
+		return NULL;
+
+	curr = curr->next;
+
+	return curr;
+}
+
+static void *clip_seq_vcc_walk(struct clip_seq_state *state,
+			       struct atmarp_entry *e, loff_t *pos)
+{
+	struct clip_vcc *vcc = state->vcc;
+
+	vcc = clip_seq_next_vcc(e, vcc);
+	if (vcc && pos != NULL) {
+		while (*pos) {
+			vcc = clip_seq_next_vcc(e, vcc);
+			if (!vcc)
+				break;
+			--(*pos);
+		}
+	}
+	state->vcc = vcc;
+
+	return vcc;
+}
+  
+static void *clip_seq_sub_iter(struct neigh_seq_state *_state,
+			       struct neighbour *n, loff_t *pos)
+{
+	struct clip_seq_state *state = (struct clip_seq_state *) _state;
+
+	return clip_seq_vcc_walk(state, NEIGH2ENTRY(n), pos);
+}
+
+static void *clip_seq_start(struct seq_file *seq, loff_t *pos)
+{
+	return neigh_seq_start(seq, pos, &clip_tbl, NEIGH_SEQ_NEIGH_ONLY);
+}
+
+static int clip_seq_show(struct seq_file *seq, void *v)
+{
+	static char atm_arp_banner[] = 
+		"IPitf TypeEncp Idle IP address      ATM address\n";
+
+	if (v == SEQ_START_TOKEN) {
+		seq_puts(seq, atm_arp_banner);
+	} else {
+		struct clip_seq_state *state = seq->private;
+		struct neighbour *n = v;
+		struct clip_vcc *vcc = state->vcc;
+
+		atmarp_info(seq, n->dev, NEIGH2ENTRY(n), vcc);
+	}
+  	return 0;
+}
+
+static struct seq_operations arp_seq_ops = {
+	.start	= clip_seq_start,
+	.next	= neigh_seq_next,
+	.stop	= neigh_seq_stop,
+	.show	= clip_seq_show,
+};
+
+static int arp_seq_open(struct inode *inode, struct file *file)
+{
+	struct clip_seq_state *state;
+	struct seq_file *seq;
+	int rc = -EAGAIN;
+
+	state = kmalloc(sizeof(*state), GFP_KERNEL);
+	if (!state) {
+		rc = -ENOMEM;
+		goto out_kfree;
+	}
+	memset(state, 0, sizeof(*state));
+	state->ns.neigh_sub_iter = clip_seq_sub_iter;
+
+	rc = seq_open(file, &arp_seq_ops);
+	if (rc)
+		goto out_kfree;
+
+	seq = file->private_data;
+	seq->private = state;
+out:
+	return rc;
+
+out_kfree:
+	kfree(state);
+	goto out;
+}
+
+static struct file_operations arp_seq_fops = {
+	.open		= arp_seq_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_release_private,
+	.owner		= THIS_MODULE
+};
+#endif
+
+static int __init atm_clip_init(void)
+{
+	neigh_table_init(&clip_tbl);
+
+	clip_tbl_hook = &clip_tbl;
+	register_atm_ioctl(&clip_ioctl_ops);
+
+#ifdef CONFIG_PROC_FS
+{
+	struct proc_dir_entry *p;
+
+	p = create_proc_entry("arp", S_IRUGO, atm_proc_root);
+	if (p)
+		p->proc_fops = &arp_seq_fops;
+}
+#endif
+
+	return 0;
+}
+
+static void __exit atm_clip_exit(void)
+{
+	struct net_device *dev, *next;
+
+	remove_proc_entry("arp", atm_proc_root);
+
+	deregister_atm_ioctl(&clip_ioctl_ops);
+
+	/* First, stop the idle timer, so it stops banging
+	 * on the table.
+	 */
+	if (start_timer == 0)
+		del_timer(&idle_timer);
+
+	/* Next, purge the table, so that the device
+	 * unregister loop below does not hang due to
+	 * device references remaining in the table.
+	 */
+	neigh_ifdown(&clip_tbl, NULL);
+
+	dev = clip_devs;
+	while (dev) {
+		next = PRIV(dev)->next;
+		unregister_netdev(dev);
+		free_netdev(dev);
+		dev = next;
+	}
+
+	/* Now it is safe to fully shutdown whole table. */
+	neigh_table_clear(&clip_tbl);
+
+	clip_tbl_hook = NULL;
+}
+
+module_init(atm_clip_init);
+module_exit(atm_clip_exit);
+
+MODULE_LICENSE("GPL");
diff --git a/net/atm/common.c b/net/atm/common.c
new file mode 100644
index 000000000000..6d16be334ea0
--- /dev/null
+++ b/net/atm/common.c
@@ -0,0 +1,804 @@
+/* net/atm/common.c - ATM sockets (common part for PVC and SVC) */
+
+/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
+
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kmod.h>
+#include <linux/net.h>		/* struct socket, struct proto_ops */
+#include <linux/atm.h>		/* ATM stuff */
+#include <linux/atmdev.h>
+#include <linux/socket.h>	/* SOL_SOCKET */
+#include <linux/errno.h>	/* error codes */
+#include <linux/capability.h>
+#include <linux/mm.h>		/* verify_area */
+#include <linux/sched.h>
+#include <linux/time.h>		/* struct timeval */
+#include <linux/skbuff.h>
+#include <linux/bitops.h>
+#include <linux/init.h>
+#include <net/sock.h>		/* struct sock */
+
+#include <asm/uaccess.h>
+#include <asm/atomic.h>
+#include <asm/poll.h>
+
+
+#include "resources.h"		/* atm_find_dev */
+#include "common.h"		/* prototypes */
+#include "protocols.h"		/* atm_init_<transport> */
+#include "addr.h"		/* address registry */
+#include "signaling.h"		/* for WAITING and sigd_attach */
+
+
+#if 0
+#define DPRINTK(format,args...) printk(KERN_DEBUG format,##args)
+#else
+#define DPRINTK(format,args...)
+#endif
+
+struct hlist_head vcc_hash[VCC_HTABLE_SIZE];
+DEFINE_RWLOCK(vcc_sklist_lock);
+
+static void __vcc_insert_socket(struct sock *sk)
+{
+	struct atm_vcc *vcc = atm_sk(sk);
+	struct hlist_head *head = &vcc_hash[vcc->vci &
+					(VCC_HTABLE_SIZE - 1)];
+	sk->sk_hashent = vcc->vci & (VCC_HTABLE_SIZE - 1);
+	sk_add_node(sk, head);
+}
+
+void vcc_insert_socket(struct sock *sk)
+{
+	write_lock_irq(&vcc_sklist_lock);
+	__vcc_insert_socket(sk);
+	write_unlock_irq(&vcc_sklist_lock);
+}
+
+static void vcc_remove_socket(struct sock *sk)
+{
+	write_lock_irq(&vcc_sklist_lock);
+	sk_del_node_init(sk);
+	write_unlock_irq(&vcc_sklist_lock);
+}
+
+
+static struct sk_buff *alloc_tx(struct atm_vcc *vcc,unsigned int size)
+{
+	struct sk_buff *skb;
+	struct sock *sk = sk_atm(vcc);
+
+	if (atomic_read(&sk->sk_wmem_alloc) && !atm_may_send(vcc, size)) {
+		DPRINTK("Sorry: wmem_alloc = %d, size = %d, sndbuf = %d\n",
+			atomic_read(&sk->sk_wmem_alloc), size,
+			sk->sk_sndbuf);
+		return NULL;
+	}
+	while (!(skb = alloc_skb(size,GFP_KERNEL))) schedule();
+	DPRINTK("AlTx %d += %d\n", atomic_read(&sk->sk_wmem_alloc),
+		skb->truesize);
+	atomic_add(skb->truesize, &sk->sk_wmem_alloc);
+	return skb;
+}
+
+
+EXPORT_SYMBOL(vcc_hash);
+EXPORT_SYMBOL(vcc_sklist_lock);
+EXPORT_SYMBOL(vcc_insert_socket);
+
+static void vcc_sock_destruct(struct sock *sk)
+{
+	if (atomic_read(&sk->sk_rmem_alloc))
+		printk(KERN_DEBUG "vcc_sock_destruct: rmem leakage (%d bytes) detected.\n", atomic_read(&sk->sk_rmem_alloc));
+
+	if (atomic_read(&sk->sk_wmem_alloc))
+		printk(KERN_DEBUG "vcc_sock_destruct: wmem leakage (%d bytes) detected.\n", atomic_read(&sk->sk_wmem_alloc));
+}
+
+static void vcc_def_wakeup(struct sock *sk)
+{
+	read_lock(&sk->sk_callback_lock);
+	if (sk->sk_sleep && waitqueue_active(sk->sk_sleep))
+		wake_up(sk->sk_sleep);
+	read_unlock(&sk->sk_callback_lock);
+}
+
+static inline int vcc_writable(struct sock *sk)
+{
+	struct atm_vcc *vcc = atm_sk(sk);
+
+	return (vcc->qos.txtp.max_sdu +
+	        atomic_read(&sk->sk_wmem_alloc)) <= sk->sk_sndbuf;
+}
+
+static void vcc_write_space(struct sock *sk)
+{       
+	read_lock(&sk->sk_callback_lock);
+
+	if (vcc_writable(sk)) {
+		if (sk->sk_sleep && waitqueue_active(sk->sk_sleep))
+			wake_up_interruptible(sk->sk_sleep);
+
+		sk_wake_async(sk, 2, POLL_OUT);
+	}
+
+	read_unlock(&sk->sk_callback_lock);
+}
+
+static struct proto vcc_proto = {
+	.name	  = "VCC",
+	.owner	  = THIS_MODULE,
+	.obj_size = sizeof(struct atm_vcc),
+};
+ 
+int vcc_create(struct socket *sock, int protocol, int family)
+{
+	struct sock *sk;
+	struct atm_vcc *vcc;
+
+	sock->sk = NULL;
+	if (sock->type == SOCK_STREAM)
+		return -EINVAL;
+	sk = sk_alloc(family, GFP_KERNEL, &vcc_proto, 1);
+	if (!sk)
+		return -ENOMEM;
+	sock_init_data(sock, sk);
+	sk->sk_state_change = vcc_def_wakeup;
+	sk->sk_write_space = vcc_write_space;
+
+	vcc = atm_sk(sk);
+	vcc->dev = NULL;
+	memset(&vcc->local,0,sizeof(struct sockaddr_atmsvc));
+	memset(&vcc->remote,0,sizeof(struct sockaddr_atmsvc));
+	vcc->qos.txtp.max_sdu = 1 << 16; /* for meta VCs */
+	atomic_set(&sk->sk_wmem_alloc, 0);
+	atomic_set(&sk->sk_rmem_alloc, 0);
+	vcc->push = NULL;
+	vcc->pop = NULL;
+	vcc->push_oam = NULL;
+	vcc->vpi = vcc->vci = 0; /* no VCI/VPI yet */
+	vcc->atm_options = vcc->aal_options = 0;
+	sk->sk_destruct = vcc_sock_destruct;
+	return 0;
+}
+
+
+static void vcc_destroy_socket(struct sock *sk)
+{
+	struct atm_vcc *vcc = atm_sk(sk);
+	struct sk_buff *skb;
+
+	set_bit(ATM_VF_CLOSE, &vcc->flags);
+	clear_bit(ATM_VF_READY, &vcc->flags);
+	if (vcc->dev) {
+		if (vcc->dev->ops->close)
+			vcc->dev->ops->close(vcc);
+		if (vcc->push)
+			vcc->push(vcc, NULL); /* atmarpd has no push */
+
+		vcc_remove_socket(sk);	/* no more receive */
+
+		while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) {
+			atm_return(vcc,skb->truesize);
+			kfree_skb(skb);
+		}
+
+		module_put(vcc->dev->ops->owner);
+		atm_dev_put(vcc->dev);
+	}
+}
+
+
+int vcc_release(struct socket *sock)
+{
+	struct sock *sk = sock->sk;
+
+	if (sk) {
+		lock_sock(sk);
+		vcc_destroy_socket(sock->sk);
+		release_sock(sk);
+		sock_put(sk);
+	}
+
+	return 0;
+}
+
+
+void vcc_release_async(struct atm_vcc *vcc, int reply)
+{
+	struct sock *sk = sk_atm(vcc);
+
+	set_bit(ATM_VF_CLOSE, &vcc->flags);
+	sk->sk_shutdown |= RCV_SHUTDOWN;
+	sk->sk_err = -reply;
+	clear_bit(ATM_VF_WAITING, &vcc->flags);
+	sk->sk_state_change(sk);
+}
+
+
+EXPORT_SYMBOL(vcc_release_async);
+
+
+static int adjust_tp(struct atm_trafprm *tp,unsigned char aal)
+{
+	int max_sdu;
+
+	if (!tp->traffic_class) return 0;
+	switch (aal) {
+		case ATM_AAL0:
+			max_sdu = ATM_CELL_SIZE-1;
+			break;
+		case ATM_AAL34:
+			max_sdu = ATM_MAX_AAL34_PDU;
+			break;
+		default:
+			printk(KERN_WARNING "ATM: AAL problems ... "
+			    "(%d)\n",aal);
+			/* fall through */
+		case ATM_AAL5:
+			max_sdu = ATM_MAX_AAL5_PDU;
+	}
+	if (!tp->max_sdu) tp->max_sdu = max_sdu;
+	else if (tp->max_sdu > max_sdu) return -EINVAL;
+	if (!tp->max_cdv) tp->max_cdv = ATM_MAX_CDV;
+	return 0;
+}
+
+
+static int check_ci(struct atm_vcc *vcc, short vpi, int vci)
+{
+	struct hlist_head *head = &vcc_hash[vci &
+					(VCC_HTABLE_SIZE - 1)];
+	struct hlist_node *node;
+	struct sock *s;
+	struct atm_vcc *walk;
+
+	sk_for_each(s, node, head) {
+		walk = atm_sk(s);
+		if (walk->dev != vcc->dev)
+			continue;
+		if (test_bit(ATM_VF_ADDR, &walk->flags) && walk->vpi == vpi &&
+		    walk->vci == vci && ((walk->qos.txtp.traffic_class !=
+		    ATM_NONE && vcc->qos.txtp.traffic_class != ATM_NONE) ||
+		    (walk->qos.rxtp.traffic_class != ATM_NONE &&
+		    vcc->qos.rxtp.traffic_class != ATM_NONE)))
+			return -EADDRINUSE;
+	}
+
+	/* allow VCCs with same VPI/VCI iff they don't collide on
+	   TX/RX (but we may refuse such sharing for other reasons,
+	   e.g. if protocol requires to have both channels) */
+
+	return 0;
+}
+
+
+static int find_ci(struct atm_vcc *vcc, short *vpi, int *vci)
+{
+	static short p;        /* poor man's per-device cache */
+	static int c;
+	short old_p;
+	int old_c;
+	int err;
+
+	if (*vpi != ATM_VPI_ANY && *vci != ATM_VCI_ANY) {
+		err = check_ci(vcc, *vpi, *vci);
+		return err;
+	}
+	/* last scan may have left values out of bounds for current device */
+	if (*vpi != ATM_VPI_ANY)
+		p = *vpi;
+	else if (p >= 1 << vcc->dev->ci_range.vpi_bits)
+		p = 0;
+	if (*vci != ATM_VCI_ANY)
+		c = *vci;
+	else if (c < ATM_NOT_RSV_VCI || c >= 1 << vcc->dev->ci_range.vci_bits)
+			c = ATM_NOT_RSV_VCI;
+	old_p = p;
+	old_c = c;
+	do {
+		if (!check_ci(vcc, p, c)) {
+			*vpi = p;
+			*vci = c;
+			return 0;
+		}
+		if (*vci == ATM_VCI_ANY) {
+			c++;
+			if (c >= 1 << vcc->dev->ci_range.vci_bits)
+				c = ATM_NOT_RSV_VCI;
+		}
+		if ((c == ATM_NOT_RSV_VCI || *vci != ATM_VCI_ANY) &&
+		    *vpi == ATM_VPI_ANY) {
+			p++;
+			if (p >= 1 << vcc->dev->ci_range.vpi_bits) p = 0;
+		}
+	}
+	while (old_p != p || old_c != c);
+	return -EADDRINUSE;
+}
+
+
+static int __vcc_connect(struct atm_vcc *vcc, struct atm_dev *dev, short vpi,
+			 int vci)
+{
+	struct sock *sk = sk_atm(vcc);
+	int error;
+
+	if ((vpi != ATM_VPI_UNSPEC && vpi != ATM_VPI_ANY &&
+	    vpi >> dev->ci_range.vpi_bits) || (vci != ATM_VCI_UNSPEC &&
+	    vci != ATM_VCI_ANY && vci >> dev->ci_range.vci_bits))
+		return -EINVAL;
+	if (vci > 0 && vci < ATM_NOT_RSV_VCI && !capable(CAP_NET_BIND_SERVICE))
+		return -EPERM;
+	error = 0;
+	if (!try_module_get(dev->ops->owner))
+		return -ENODEV;
+	vcc->dev = dev;
+	write_lock_irq(&vcc_sklist_lock);
+	if ((error = find_ci(vcc, &vpi, &vci))) {
+		write_unlock_irq(&vcc_sklist_lock);
+		goto fail_module_put;
+	}
+	vcc->vpi = vpi;
+	vcc->vci = vci;
+	__vcc_insert_socket(sk);
+	write_unlock_irq(&vcc_sklist_lock);
+	switch (vcc->qos.aal) {
+		case ATM_AAL0:
+			error = atm_init_aal0(vcc);
+			vcc->stats = &dev->stats.aal0;
+			break;
+		case ATM_AAL34:
+			error = atm_init_aal34(vcc);
+			vcc->stats = &dev->stats.aal34;
+			break;
+		case ATM_NO_AAL:
+			/* ATM_AAL5 is also used in the "0 for default" case */
+			vcc->qos.aal = ATM_AAL5;
+			/* fall through */
+		case ATM_AAL5:
+			error = atm_init_aal5(vcc);
+			vcc->stats = &dev->stats.aal5;
+			break;
+		default:
+			error = -EPROTOTYPE;
+	}
+	if (!error) error = adjust_tp(&vcc->qos.txtp,vcc->qos.aal);
+	if (!error) error = adjust_tp(&vcc->qos.rxtp,vcc->qos.aal);
+	if (error)
+		goto fail;
+	DPRINTK("VCC %d.%d, AAL %d\n",vpi,vci,vcc->qos.aal);
+	DPRINTK("  TX: %d, PCR %d..%d, SDU %d\n",vcc->qos.txtp.traffic_class,
+	    vcc->qos.txtp.min_pcr,vcc->qos.txtp.max_pcr,vcc->qos.txtp.max_sdu);
+	DPRINTK("  RX: %d, PCR %d..%d, SDU %d\n",vcc->qos.rxtp.traffic_class,
+	    vcc->qos.rxtp.min_pcr,vcc->qos.rxtp.max_pcr,vcc->qos.rxtp.max_sdu);
+
+	if (dev->ops->open) {
+		if ((error = dev->ops->open(vcc)))
+			goto fail;
+	}
+	return 0;
+
+fail:
+	vcc_remove_socket(sk);
+fail_module_put:
+	module_put(dev->ops->owner);
+	/* ensure we get dev module ref count correct */
+	vcc->dev = NULL;
+	return error;
+}
+
+
+int vcc_connect(struct socket *sock, int itf, short vpi, int vci)
+{
+	struct atm_dev *dev;
+	struct atm_vcc *vcc = ATM_SD(sock);
+	int error;
+
+	DPRINTK("vcc_connect (vpi %d, vci %d)\n",vpi,vci);
+	if (sock->state == SS_CONNECTED)
+		return -EISCONN;
+	if (sock->state != SS_UNCONNECTED)
+		return -EINVAL;
+	if (!(vpi || vci))
+		return -EINVAL;
+
+	if (vpi != ATM_VPI_UNSPEC && vci != ATM_VCI_UNSPEC)
+		clear_bit(ATM_VF_PARTIAL,&vcc->flags);
+	else
+		if (test_bit(ATM_VF_PARTIAL,&vcc->flags))
+			return -EINVAL;
+	DPRINTK("vcc_connect (TX: cl %d,bw %d-%d,sdu %d; "
+	    "RX: cl %d,bw %d-%d,sdu %d,AAL %s%d)\n",
+	    vcc->qos.txtp.traffic_class,vcc->qos.txtp.min_pcr,
+	    vcc->qos.txtp.max_pcr,vcc->qos.txtp.max_sdu,
+	    vcc->qos.rxtp.traffic_class,vcc->qos.rxtp.min_pcr,
+	    vcc->qos.rxtp.max_pcr,vcc->qos.rxtp.max_sdu,
+	    vcc->qos.aal == ATM_AAL5 ? "" : vcc->qos.aal == ATM_AAL0 ? "" :
+	    " ??? code ",vcc->qos.aal == ATM_AAL0 ? 0 : vcc->qos.aal);
+	if (!test_bit(ATM_VF_HASQOS, &vcc->flags))
+		return -EBADFD;
+	if (vcc->qos.txtp.traffic_class == ATM_ANYCLASS ||
+	    vcc->qos.rxtp.traffic_class == ATM_ANYCLASS)
+		return -EINVAL;
+	if (itf != ATM_ITF_ANY) {
+		dev = atm_dev_lookup(itf);
+		if (!dev)
+			return -ENODEV;
+		error = __vcc_connect(vcc, dev, vpi, vci);
+		if (error) {
+			atm_dev_put(dev);
+			return error;
+		}
+	} else {
+		struct list_head *p, *next;
+
+		dev = NULL;
+		spin_lock(&atm_dev_lock);
+		list_for_each_safe(p, next, &atm_devs) {
+			dev = list_entry(p, struct atm_dev, dev_list);
+			atm_dev_hold(dev);
+			spin_unlock(&atm_dev_lock);
+			if (!__vcc_connect(vcc, dev, vpi, vci))
+				break;
+			atm_dev_put(dev);
+			dev = NULL;
+			spin_lock(&atm_dev_lock);
+		}
+		spin_unlock(&atm_dev_lock);
+		if (!dev)
+			return -ENODEV;
+	}
+	if (vpi == ATM_VPI_UNSPEC || vci == ATM_VCI_UNSPEC)
+		set_bit(ATM_VF_PARTIAL,&vcc->flags);
+	if (test_bit(ATM_VF_READY,&ATM_SD(sock)->flags))
+		sock->state = SS_CONNECTED;
+	return 0;
+}
+
+
+int vcc_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg,
+		size_t size, int flags)
+{
+	struct sock *sk = sock->sk;
+	struct atm_vcc *vcc;
+	struct sk_buff *skb;
+	int copied, error = -EINVAL;
+
+	if (sock->state != SS_CONNECTED)
+		return -ENOTCONN;
+	if (flags & ~MSG_DONTWAIT)		/* only handle MSG_DONTWAIT */
+		return -EOPNOTSUPP;
+	vcc = ATM_SD(sock);
+	if (test_bit(ATM_VF_RELEASED,&vcc->flags) ||
+	    test_bit(ATM_VF_CLOSE,&vcc->flags) ||
+	    !test_bit(ATM_VF_READY, &vcc->flags))
+		return 0;
+
+	skb = skb_recv_datagram(sk, flags, flags & MSG_DONTWAIT, &error);
+	if (!skb)
+		return error;
+
+	copied = skb->len; 
+	if (copied > size) {
+		copied = size; 
+		msg->msg_flags |= MSG_TRUNC;
+	}
+
+        error = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
+        if (error)
+                return error;
+        sock_recv_timestamp(msg, sk, skb);
+        DPRINTK("RcvM %d -= %d\n", atomic_read(&sk->rmem_alloc), skb->truesize);
+        atm_return(vcc, skb->truesize);
+        skb_free_datagram(sk, skb);
+        return copied;
+}
+
+
+int vcc_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *m,
+		size_t total_len)
+{
+	struct sock *sk = sock->sk;
+	DEFINE_WAIT(wait);
+	struct atm_vcc *vcc;
+	struct sk_buff *skb;
+	int eff,error;
+	const void __user *buff;
+	int size;
+
+	lock_sock(sk);
+	if (sock->state != SS_CONNECTED) {
+		error = -ENOTCONN;
+		goto out;
+	}
+	if (m->msg_name) {
+		error = -EISCONN;
+		goto out;
+	}
+	if (m->msg_iovlen != 1) {
+		error = -ENOSYS; /* fix this later @@@ */
+		goto out;
+	}
+	buff = m->msg_iov->iov_base;
+	size = m->msg_iov->iov_len;
+	vcc = ATM_SD(sock);
+	if (test_bit(ATM_VF_RELEASED, &vcc->flags) ||
+	    test_bit(ATM_VF_CLOSE, &vcc->flags) ||
+	    !test_bit(ATM_VF_READY, &vcc->flags)) {
+		error = -EPIPE;
+		send_sig(SIGPIPE, current, 0);
+		goto out;
+	}
+	if (!size) {
+		error = 0;
+		goto out;
+	}
+	if (size < 0 || size > vcc->qos.txtp.max_sdu) {
+		error = -EMSGSIZE;
+		goto out;
+	}
+	/* verify_area is done by net/socket.c */
+	eff = (size+3) & ~3; /* align to word boundary */
+	prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
+	error = 0;
+	while (!(skb = alloc_tx(vcc,eff))) {
+		if (m->msg_flags & MSG_DONTWAIT) {
+			error = -EAGAIN;
+			break;
+		}
+		schedule();
+		if (signal_pending(current)) {
+			error = -ERESTARTSYS;
+			break;
+		}
+		if (test_bit(ATM_VF_RELEASED,&vcc->flags) ||
+		    test_bit(ATM_VF_CLOSE,&vcc->flags) ||
+		    !test_bit(ATM_VF_READY,&vcc->flags)) {
+			error = -EPIPE;
+			send_sig(SIGPIPE, current, 0);
+			break;
+		}
+		prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
+	}
+	finish_wait(sk->sk_sleep, &wait);
+	if (error)
+		goto out;
+	skb->dev = NULL; /* for paths shared with net_device interfaces */
+	ATM_SKB(skb)->atm_options = vcc->atm_options;
+	if (copy_from_user(skb_put(skb,size),buff,size)) {
+		kfree_skb(skb);
+		error = -EFAULT;
+		goto out;
+	}
+	if (eff != size) memset(skb->data+size,0,eff-size);
+	error = vcc->dev->ops->send(vcc,skb);
+	error = error ? error : size;
+out:
+	release_sock(sk);
+	return error;
+}
+
+
+unsigned int vcc_poll(struct file *file, struct socket *sock, poll_table *wait)
+{
+	struct sock *sk = sock->sk;
+	struct atm_vcc *vcc;
+	unsigned int mask;
+
+	poll_wait(file, sk->sk_sleep, wait);
+	mask = 0;
+
+	vcc = ATM_SD(sock);
+
+	/* exceptional events */
+	if (sk->sk_err)
+		mask = POLLERR;
+
+	if (test_bit(ATM_VF_RELEASED, &vcc->flags) ||
+	    test_bit(ATM_VF_CLOSE, &vcc->flags))
+		mask |= POLLHUP;
+
+	/* readable? */
+	if (!skb_queue_empty(&sk->sk_receive_queue))
+		mask |= POLLIN | POLLRDNORM;
+
+	/* writable? */
+	if (sock->state == SS_CONNECTING &&
+	    test_bit(ATM_VF_WAITING, &vcc->flags))
+		return mask;
+
+	if (vcc->qos.txtp.traffic_class != ATM_NONE &&
+	    vcc_writable(sk))
+		mask |= POLLOUT | POLLWRNORM | POLLWRBAND;
+
+	return mask;
+}
+
+
+static int atm_change_qos(struct atm_vcc *vcc,struct atm_qos *qos)
+{
+	int error;
+
+	/*
+	 * Don't let the QoS change the already connected AAL type nor the
+	 * traffic class.
+	 */
+	if (qos->aal != vcc->qos.aal ||
+	    qos->rxtp.traffic_class != vcc->qos.rxtp.traffic_class ||
+	    qos->txtp.traffic_class != vcc->qos.txtp.traffic_class)
+		return -EINVAL;
+	error = adjust_tp(&qos->txtp,qos->aal);
+	if (!error) error = adjust_tp(&qos->rxtp,qos->aal);
+	if (error) return error;
+	if (!vcc->dev->ops->change_qos) return -EOPNOTSUPP;
+	if (sk_atm(vcc)->sk_family == AF_ATMPVC)
+		return vcc->dev->ops->change_qos(vcc,qos,ATM_MF_SET);
+	return svc_change_qos(vcc,qos);
+}
+
+
+static int check_tp(struct atm_trafprm *tp)
+{
+	/* @@@ Should be merged with adjust_tp */
+	if (!tp->traffic_class || tp->traffic_class == ATM_ANYCLASS) return 0;
+	if (tp->traffic_class != ATM_UBR && !tp->min_pcr && !tp->pcr &&
+	    !tp->max_pcr) return -EINVAL;
+	if (tp->min_pcr == ATM_MAX_PCR) return -EINVAL;
+	if (tp->min_pcr && tp->max_pcr && tp->max_pcr != ATM_MAX_PCR &&
+	    tp->min_pcr > tp->max_pcr) return -EINVAL;
+	/*
+	 * We allow pcr to be outside [min_pcr,max_pcr], because later
+	 * adjustment may still push it in the valid range.
+	 */
+	return 0;
+}
+
+
+static int check_qos(struct atm_qos *qos)
+{
+	int error;
+
+	if (!qos->txtp.traffic_class && !qos->rxtp.traffic_class)
+                return -EINVAL;
+	if (qos->txtp.traffic_class != qos->rxtp.traffic_class &&
+	    qos->txtp.traffic_class && qos->rxtp.traffic_class &&
+	    qos->txtp.traffic_class != ATM_ANYCLASS &&
+	    qos->rxtp.traffic_class != ATM_ANYCLASS) return -EINVAL;
+	error = check_tp(&qos->txtp);
+	if (error) return error;
+	return check_tp(&qos->rxtp);
+}
+
+int vcc_setsockopt(struct socket *sock, int level, int optname,
+		   char __user *optval, int optlen)
+{
+	struct atm_vcc *vcc;
+	unsigned long value;
+	int error;
+
+	if (__SO_LEVEL_MATCH(optname, level) && optlen != __SO_SIZE(optname))
+		return -EINVAL;
+
+	vcc = ATM_SD(sock);
+	switch (optname) {
+		case SO_ATMQOS:
+			{
+				struct atm_qos qos;
+
+				if (copy_from_user(&qos,optval,sizeof(qos)))
+					return -EFAULT;
+				error = check_qos(&qos);
+				if (error) return error;
+				if (sock->state == SS_CONNECTED)
+					return atm_change_qos(vcc,&qos);
+				if (sock->state != SS_UNCONNECTED)
+					return -EBADFD;
+				vcc->qos = qos;
+				set_bit(ATM_VF_HASQOS,&vcc->flags);
+				return 0;
+			}
+		case SO_SETCLP:
+			if (get_user(value,(unsigned long __user *)optval))
+				return -EFAULT;
+			if (value) vcc->atm_options |= ATM_ATMOPT_CLP;
+			else vcc->atm_options &= ~ATM_ATMOPT_CLP;
+			return 0;
+		default:
+			if (level == SOL_SOCKET) return -EINVAL;
+			break;
+	}
+	if (!vcc->dev || !vcc->dev->ops->setsockopt) return -EINVAL;
+	return vcc->dev->ops->setsockopt(vcc,level,optname,optval,optlen);
+}
+
+
+int vcc_getsockopt(struct socket *sock, int level, int optname,
+		   char __user *optval, int __user *optlen)
+{
+	struct atm_vcc *vcc;
+	int len;
+
+	if (get_user(len, optlen))
+		return -EFAULT;
+	if (__SO_LEVEL_MATCH(optname, level) && len != __SO_SIZE(optname))
+		return -EINVAL;
+
+	vcc = ATM_SD(sock);
+	switch (optname) {
+		case SO_ATMQOS:
+			if (!test_bit(ATM_VF_HASQOS,&vcc->flags))
+				return -EINVAL;
+			return copy_to_user(optval,&vcc->qos,sizeof(vcc->qos)) ?
+			    -EFAULT : 0;
+		case SO_SETCLP:
+			return put_user(vcc->atm_options & ATM_ATMOPT_CLP ? 1 :
+			  0,(unsigned long __user *)optval) ? -EFAULT : 0;
+		case SO_ATMPVC:
+			{
+				struct sockaddr_atmpvc pvc;
+
+				if (!vcc->dev ||
+				    !test_bit(ATM_VF_ADDR,&vcc->flags))
+					return -ENOTCONN;
+				pvc.sap_family = AF_ATMPVC;
+				pvc.sap_addr.itf = vcc->dev->number;
+				pvc.sap_addr.vpi = vcc->vpi;
+				pvc.sap_addr.vci = vcc->vci;
+				return copy_to_user(optval,&pvc,sizeof(pvc)) ?
+				    -EFAULT : 0;
+			}
+		default:
+			if (level == SOL_SOCKET) return -EINVAL;
+			break;
+	}
+	if (!vcc->dev || !vcc->dev->ops->getsockopt) return -EINVAL;
+	return vcc->dev->ops->getsockopt(vcc, level, optname, optval, len);
+}
+
+static int __init atm_init(void)
+{
+	int error;
+
+	if ((error = proto_register(&vcc_proto, 0)) < 0)
+		goto out;
+
+	if ((error = atmpvc_init()) < 0) {
+		printk(KERN_ERR "atmpvc_init() failed with %d\n", error);
+		goto out_unregister_vcc_proto;
+	}
+	if ((error = atmsvc_init()) < 0) {
+		printk(KERN_ERR "atmsvc_init() failed with %d\n", error);
+		goto out_atmpvc_exit;
+	}
+        if ((error = atm_proc_init()) < 0) {
+		printk(KERN_ERR "atm_proc_init() failed with %d\n",error);
+		goto out_atmsvc_exit;
+	}
+out:
+	return error;
+out_atmsvc_exit:
+	atmsvc_exit();
+out_atmpvc_exit:
+	atmsvc_exit();
+out_unregister_vcc_proto:
+	proto_unregister(&vcc_proto);
+	goto out;
+}
+
+static void __exit atm_exit(void)
+{
+	atm_proc_exit();
+	atmsvc_exit();
+	atmpvc_exit();
+	proto_unregister(&vcc_proto);
+}
+
+module_init(atm_init);
+module_exit(atm_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_NETPROTO(PF_ATMPVC);
+MODULE_ALIAS_NETPROTO(PF_ATMSVC);
diff --git a/net/atm/common.h b/net/atm/common.h
new file mode 100644
index 000000000000..e49ed41c0e33
--- /dev/null
+++ b/net/atm/common.h
@@ -0,0 +1,50 @@
+/* net/atm/common.h - ATM sockets (common part for PVC and SVC) */
+ 
+/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
+
+
+#ifndef NET_ATM_COMMON_H
+#define NET_ATM_COMMON_H
+
+#include <linux/net.h>
+#include <linux/poll.h> /* for poll_table */
+
+
+int vcc_create(struct socket *sock, int protocol, int family);
+int vcc_release(struct socket *sock);
+int vcc_connect(struct socket *sock, int itf, short vpi, int vci);
+int vcc_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg,
+		size_t size, int flags);
+int vcc_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *m,
+		size_t total_len);
+unsigned int vcc_poll(struct file *file, struct socket *sock, poll_table *wait);
+int vcc_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
+int vcc_setsockopt(struct socket *sock, int level, int optname,
+		   char __user *optval, int optlen);
+int vcc_getsockopt(struct socket *sock, int level, int optname,
+		   char __user *optval, int __user *optlen);
+
+int atmpvc_init(void);
+void atmpvc_exit(void);
+int atmsvc_init(void);
+void atmsvc_exit(void);
+
+#ifdef CONFIG_PROC_FS
+int atm_proc_init(void);
+void atm_proc_exit(void);
+#else
+static inline int atm_proc_init(void)
+{
+	return 0;
+}
+
+static inline void atm_proc_exit(void)
+{
+	/* nothing */
+}
+#endif /* CONFIG_PROC_FS */
+
+/* SVC */
+int svc_change_qos(struct atm_vcc *vcc,struct atm_qos *qos);
+
+#endif
diff --git a/net/atm/ioctl.c b/net/atm/ioctl.c
new file mode 100644
index 000000000000..4dbb5af34a5e
--- /dev/null
+++ b/net/atm/ioctl.c
@@ -0,0 +1,139 @@
+/* ATM ioctl handling */
+
+/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
+/* 2003 John Levon  <levon@movementarian.org> */
+
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kmod.h>
+#include <linux/net.h>		/* struct socket, struct proto_ops */
+#include <linux/atm.h>		/* ATM stuff */
+#include <linux/atmdev.h>
+#include <linux/atmclip.h>	/* CLIP_*ENCAP */
+#include <linux/atmarp.h>	/* manifest constants */
+#include <linux/sonet.h>	/* for ioctls */
+#include <linux/atmsvc.h>
+#include <linux/atmmpc.h>
+#include <net/atmclip.h>
+#include <linux/atmlec.h>
+#include <asm/ioctls.h>
+
+#include "resources.h"
+#include "signaling.h"		/* for WAITING and sigd_attach */
+
+
+static DECLARE_MUTEX(ioctl_mutex);
+static LIST_HEAD(ioctl_list);
+
+
+void register_atm_ioctl(struct atm_ioctl *ioctl)
+{
+	down(&ioctl_mutex);
+	list_add_tail(&ioctl->list, &ioctl_list);
+	up(&ioctl_mutex);
+}
+
+void deregister_atm_ioctl(struct atm_ioctl *ioctl)
+{
+	down(&ioctl_mutex);
+	list_del(&ioctl->list);
+	up(&ioctl_mutex);
+}
+
+EXPORT_SYMBOL(register_atm_ioctl);
+EXPORT_SYMBOL(deregister_atm_ioctl);
+
+int vcc_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
+{
+	struct sock *sk = sock->sk;
+	struct atm_vcc *vcc;
+	int error;
+	struct list_head * pos;
+	void __user *argp = (void __user *)arg;
+
+	vcc = ATM_SD(sock);
+	switch (cmd) {
+		case SIOCOUTQ:
+			if (sock->state != SS_CONNECTED ||
+			    !test_bit(ATM_VF_READY, &vcc->flags)) {
+				error =  -EINVAL;
+				goto done;
+			}
+			error = put_user(sk->sk_sndbuf -
+					 atomic_read(&sk->sk_wmem_alloc),
+					 (int __user *) argp) ? -EFAULT : 0;
+			goto done;
+		case SIOCINQ:
+			{
+				struct sk_buff *skb;
+
+				if (sock->state != SS_CONNECTED) {
+					error = -EINVAL;
+					goto done;
+				}
+				skb = skb_peek(&sk->sk_receive_queue);
+				error = put_user(skb ? skb->len : 0,
+					 	 (int __user *)argp) ? -EFAULT : 0;
+				goto done;
+			}
+		case SIOCGSTAMP: /* borrowed from IP */
+			error = sock_get_timestamp(sk, argp);
+			goto done;
+		case ATM_SETSC:
+			printk(KERN_WARNING "ATM_SETSC is obsolete\n");
+			error = 0;
+			goto done;
+		case ATMSIGD_CTRL:
+			if (!capable(CAP_NET_ADMIN)) {
+				error = -EPERM;
+				goto done;
+			}
+			/*
+			 * The user/kernel protocol for exchanging signalling
+			 * info uses kernel pointers as opaque references,
+			 * so the holder of the file descriptor can scribble
+			 * on the kernel... so we should make sure that we
+			 * have the same privledges that /proc/kcore needs
+			 */
+			if (!capable(CAP_SYS_RAWIO)) {
+				error = -EPERM;
+				goto done;
+			}
+			error = sigd_attach(vcc);
+			if (!error)
+				sock->state = SS_CONNECTED;
+			goto done;
+		default:
+			break;
+	}
+
+	if (cmd == ATMMPC_CTRL || cmd == ATMMPC_DATA)
+		request_module("mpoa");
+	if (cmd == ATMARPD_CTRL)
+		request_module("clip");
+	if (cmd == ATMLEC_CTRL)
+		request_module("lec");
+
+	error = -ENOIOCTLCMD;
+
+	down(&ioctl_mutex);
+	list_for_each(pos, &ioctl_list) {
+		struct atm_ioctl * ic = list_entry(pos, struct atm_ioctl, list);
+		if (try_module_get(ic->owner)) {
+			error = ic->ioctl(sock, cmd, arg);
+			module_put(ic->owner);
+			if (error != -ENOIOCTLCMD)
+				break;
+		}
+	}
+	up(&ioctl_mutex);
+
+	if (error != -ENOIOCTLCMD)
+		goto done;
+
+	error = atm_dev_ioctl(cmd, argp);
+
+done:
+	return error;
+}
diff --git a/net/atm/ipcommon.c b/net/atm/ipcommon.c
new file mode 100644
index 000000000000..181a3002d8ad
--- /dev/null
+++ b/net/atm/ipcommon.c
@@ -0,0 +1,61 @@
+/* net/atm/ipcommon.c - Common items for all ways of doing IP over ATM */
+
+/* Written 1996-2000 by Werner Almesberger, EPFL LRC/ICA */
+
+
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/in.h>
+#include <linux/atmdev.h>
+#include <linux/atmclip.h>
+
+#include "common.h"
+#include "ipcommon.h"
+
+
+#if 0
+#define DPRINTK(format,args...) printk(KERN_DEBUG format,##args)
+#else
+#define DPRINTK(format,args...)
+#endif
+
+
+/*
+ * skb_migrate appends the list at "from" to "to", emptying "from" in the
+ * process. skb_migrate is atomic with respect to all other skb operations on
+ * "from" and "to". Note that it locks both lists at the same time, so beware
+ * of potential deadlocks.
+ *
+ * This function should live in skbuff.c or skbuff.h.
+ */
+
+
+void skb_migrate(struct sk_buff_head *from,struct sk_buff_head *to)
+{
+	struct sk_buff *skb;
+	unsigned long flags;
+	struct sk_buff *skb_from = (struct sk_buff *) from;
+	struct sk_buff *skb_to = (struct sk_buff *) to;
+	struct sk_buff *prev;
+
+	spin_lock_irqsave(&from->lock,flags);
+	spin_lock(&to->lock);
+	prev = from->prev;
+	from->next->prev = to->prev;
+	prev->next = skb_to;
+	to->prev->next = from->next;
+	to->prev = from->prev;
+	for (skb = from->next; skb != skb_to; skb = skb->next)
+		skb->list = to;
+	to->qlen += from->qlen;
+	spin_unlock(&to->lock);
+	from->prev = skb_from;
+	from->next = skb_from;
+	from->qlen = 0;
+	spin_unlock_irqrestore(&from->lock,flags);
+}
+
+
+EXPORT_SYMBOL(skb_migrate);
diff --git a/net/atm/ipcommon.h b/net/atm/ipcommon.h
new file mode 100644
index 000000000000..d72165f60939
--- /dev/null
+++ b/net/atm/ipcommon.h
@@ -0,0 +1,22 @@
+/* net/atm/ipcommon.h - Common items for all ways of doing IP over ATM */
+
+/* Written 1996-2000 by Werner Almesberger, EPFL LRC/ICA */
+
+
+#ifndef NET_ATM_IPCOMMON_H
+#define NET_ATM_IPCOMMON_H
+
+
+#include <linux/string.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/atmdev.h>
+
+/*
+ * Appends all skbs from "from" to "to". The operation is atomic with respect
+ * to all other skb operations on "from" or "to".
+ */
+
+void skb_migrate(struct sk_buff_head *from,struct sk_buff_head *to);
+
+#endif
diff --git a/net/atm/lec.c b/net/atm/lec.c
new file mode 100644
index 000000000000..a0752487026d
--- /dev/null
+++ b/net/atm/lec.c
@@ -0,0 +1,2538 @@
+/*
+ * lec.c: Lan Emulation driver 
+ * Marko Kiiskila mkiiskila@yahoo.com
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/bitops.h>
+
+/* We are ethernet device */
+#include <linux/if_ether.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <net/sock.h>
+#include <linux/skbuff.h>
+#include <linux/ip.h>
+#include <asm/byteorder.h>
+#include <asm/uaccess.h>
+#include <net/arp.h>
+#include <net/dst.h>
+#include <linux/proc_fs.h>
+#include <linux/spinlock.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+
+/* TokenRing if needed */
+#ifdef CONFIG_TR
+#include <linux/trdevice.h>
+#endif
+
+/* And atm device */
+#include <linux/atmdev.h>
+#include <linux/atmlec.h>
+
+/* Proxy LEC knows about bridging */
+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
+#include <linux/if_bridge.h>
+#include "../bridge/br_private.h"
+
+static unsigned char bridge_ula_lec[] = {0x01, 0x80, 0xc2, 0x00, 0x00};
+#endif
+
+/* Modular too */
+#include <linux/module.h>
+#include <linux/init.h>
+
+#include "lec.h"
+#include "lec_arpc.h"
+#include "resources.h"
+
+#if 0
+#define DPRINTK printk
+#else
+#define DPRINTK(format,args...)
+#endif
+
+#define DUMP_PACKETS 0 /* 0 = None,
+                        * 1 = 30 first bytes
+                        * 2 = Whole packet
+                        */
+
+#define LEC_UNRES_QUE_LEN 8 /* number of tx packets to queue for a
+                               single destination while waiting for SVC */
+
+static int lec_open(struct net_device *dev);
+static int lec_start_xmit(struct sk_buff *skb, struct net_device *dev);
+static int lec_close(struct net_device *dev);
+static struct net_device_stats *lec_get_stats(struct net_device *dev);
+static void lec_init(struct net_device *dev);
+static struct lec_arp_table* lec_arp_find(struct lec_priv *priv,
+                                                     unsigned char *mac_addr);
+static int lec_arp_remove(struct lec_priv *priv,
+				     struct lec_arp_table *to_remove);
+/* LANE2 functions */
+static void lane2_associate_ind (struct net_device *dev, u8 *mac_address,
+                          u8 *tlvs, u32 sizeoftlvs);
+static int lane2_resolve(struct net_device *dev, u8 *dst_mac, int force,
+                  u8 **tlvs, u32 *sizeoftlvs);
+static int lane2_associate_req (struct net_device *dev, u8 *lan_dst,
+                         u8 *tlvs, u32 sizeoftlvs);
+
+static int lec_addr_delete(struct lec_priv *priv, unsigned char *atm_addr, 
+			   unsigned long permanent);
+static void lec_arp_check_empties(struct lec_priv *priv,
+				  struct atm_vcc *vcc, struct sk_buff *skb);
+static void lec_arp_destroy(struct lec_priv *priv);
+static void lec_arp_init(struct lec_priv *priv);
+static struct atm_vcc* lec_arp_resolve(struct lec_priv *priv,
+				       unsigned char *mac_to_find,
+				       int is_rdesc,
+				       struct lec_arp_table **ret_entry);
+static void lec_arp_update(struct lec_priv *priv, unsigned char *mac_addr,
+			   unsigned char *atm_addr, unsigned long remoteflag,
+			   unsigned int targetless_le_arp);
+static void lec_flush_complete(struct lec_priv *priv, unsigned long tran_id);
+static int lec_mcast_make(struct lec_priv *priv, struct atm_vcc *vcc);
+static void lec_set_flush_tran_id(struct lec_priv *priv,
+				  unsigned char *atm_addr,
+				  unsigned long tran_id);
+static void lec_vcc_added(struct lec_priv *priv, struct atmlec_ioc *ioc_data,
+			  struct atm_vcc *vcc,
+			  void (*old_push)(struct atm_vcc *vcc, struct sk_buff *skb));
+static void lec_vcc_close(struct lec_priv *priv, struct atm_vcc *vcc);
+
+static struct lane2_ops lane2_ops = {
+	lane2_resolve,         /* resolve,             spec 3.1.3 */
+	lane2_associate_req,   /* associate_req,       spec 3.1.4 */
+	NULL                  /* associate indicator, spec 3.1.5 */
+};
+
+static unsigned char bus_mac[ETH_ALEN] = {0xff,0xff,0xff,0xff,0xff,0xff};
+
+/* Device structures */
+static struct net_device *dev_lec[MAX_LEC_ITF];
+
+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
+static void lec_handle_bridge(struct sk_buff *skb, struct net_device *dev)
+{
+        struct ethhdr *eth;
+        char *buff;
+        struct lec_priv *priv;
+
+        /* Check if this is a BPDU. If so, ask zeppelin to send
+         * LE_TOPOLOGY_REQUEST with the same value of Topology Change bit
+         * as the Config BPDU has */
+        eth = (struct ethhdr *)skb->data;
+        buff = skb->data + skb->dev->hard_header_len;
+        if (*buff++ == 0x42 && *buff++ == 0x42 && *buff++ == 0x03) {
+		struct sock *sk;
+                struct sk_buff *skb2;
+                struct atmlec_msg *mesg;
+
+                skb2 = alloc_skb(sizeof(struct atmlec_msg), GFP_ATOMIC);
+                if (skb2 == NULL) return;
+                skb2->len = sizeof(struct atmlec_msg);
+                mesg = (struct atmlec_msg *)skb2->data;
+                mesg->type = l_topology_change;
+                buff += 4;
+                mesg->content.normal.flag = *buff & 0x01; /* 0x01 is topology change */
+
+                priv = (struct lec_priv *)dev->priv;
+                atm_force_charge(priv->lecd, skb2->truesize);
+		sk = sk_atm(priv->lecd);
+                skb_queue_tail(&sk->sk_receive_queue, skb2);
+                sk->sk_data_ready(sk, skb2->len);
+        }
+
+        return;
+}
+#endif /* defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) */
+
+/*
+ * Modelled after tr_type_trans
+ * All multicast and ARE or STE frames go to BUS.
+ * Non source routed frames go by destination address.
+ * Last hop source routed frames go by destination address.
+ * Not last hop source routed frames go by _next_ route descriptor.
+ * Returns pointer to destination MAC address or fills in rdesc
+ * and returns NULL.
+ */
+#ifdef CONFIG_TR
+static unsigned char *get_tr_dst(unsigned char *packet, unsigned char *rdesc)
+{
+        struct trh_hdr *trh;
+        int riflen, num_rdsc;
+        
+        trh = (struct trh_hdr *)packet;
+        if (trh->daddr[0] & (uint8_t)0x80)
+                return bus_mac; /* multicast */
+
+        if (trh->saddr[0] & TR_RII) {
+                riflen = (ntohs(trh->rcf) & TR_RCF_LEN_MASK) >> 8;
+                if ((ntohs(trh->rcf) >> 13) != 0)
+                        return bus_mac; /* ARE or STE */
+        }
+        else
+                return trh->daddr; /* not source routed */
+
+        if (riflen < 6)
+                return trh->daddr; /* last hop, source routed */
+                
+        /* riflen is 6 or more, packet has more than one route descriptor */
+        num_rdsc = (riflen/2) - 1;
+        memset(rdesc, 0, ETH_ALEN);
+        /* offset 4 comes from LAN destination field in LE control frames */
+        if (trh->rcf & htons((uint16_t)TR_RCF_DIR_BIT))
+                memcpy(&rdesc[4], &trh->rseg[num_rdsc-2], sizeof(uint16_t));
+        else {
+                memcpy(&rdesc[4], &trh->rseg[1], sizeof(uint16_t));
+                rdesc[5] = ((ntohs(trh->rseg[0]) & 0x000f) | (rdesc[5] & 0xf0));
+        }
+
+        return NULL;
+}
+#endif /* CONFIG_TR */
+
+/*
+ * Open/initialize the netdevice. This is called (in the current kernel)
+ * sometime after booting when the 'ifconfig' program is run.
+ *
+ * This routine should set everything up anew at each open, even
+ * registers that "should" only need to be set once at boot, so that
+ * there is non-reboot way to recover if something goes wrong.
+ */
+
+static int 
+lec_open(struct net_device *dev)
+{
+        struct lec_priv *priv = (struct lec_priv *)dev->priv;
+        
+	netif_start_queue(dev);
+        memset(&priv->stats,0,sizeof(struct net_device_stats));
+        
+        return 0;
+}
+
+static __inline__ void
+lec_send(struct atm_vcc *vcc, struct sk_buff *skb, struct lec_priv *priv)
+{
+	ATM_SKB(skb)->vcc = vcc;
+	ATM_SKB(skb)->atm_options = vcc->atm_options;
+
+	atomic_add(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc);
+	if (vcc->send(vcc, skb) < 0) {
+		priv->stats.tx_dropped++;
+		return;
+	}
+
+	priv->stats.tx_packets++;
+	priv->stats.tx_bytes += skb->len;
+}
+
+static void
+lec_tx_timeout(struct net_device *dev)
+{
+	printk(KERN_INFO "%s: tx timeout\n", dev->name);
+	dev->trans_start = jiffies;
+	netif_wake_queue(dev);
+}
+
+static int 
+lec_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+        struct sk_buff *skb2;
+        struct lec_priv *priv = (struct lec_priv *)dev->priv;
+        struct lecdatahdr_8023 *lec_h;
+        struct atm_vcc *vcc;
+	struct lec_arp_table *entry;
+        unsigned char *dst;
+	int min_frame_size;
+#ifdef CONFIG_TR
+        unsigned char rdesc[ETH_ALEN]; /* Token Ring route descriptor */
+#endif
+        int is_rdesc;
+#if DUMP_PACKETS > 0
+        char buf[300];
+        int i=0;
+#endif /* DUMP_PACKETS >0 */
+        
+        DPRINTK("lec_start_xmit called\n");  
+        if (!priv->lecd) {
+                printk("%s:No lecd attached\n",dev->name);
+                priv->stats.tx_errors++;
+                netif_stop_queue(dev);
+                return -EUNATCH;
+        } 
+
+        DPRINTK("skbuff head:%lx data:%lx tail:%lx end:%lx\n",
+                (long)skb->head, (long)skb->data, (long)skb->tail,
+                (long)skb->end);
+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
+        if (memcmp(skb->data, bridge_ula_lec, sizeof(bridge_ula_lec)) == 0)
+                lec_handle_bridge(skb, dev);
+#endif
+
+        /* Make sure we have room for lec_id */
+        if (skb_headroom(skb) < 2) {
+
+                DPRINTK("lec_start_xmit: reallocating skb\n");
+                skb2 = skb_realloc_headroom(skb, LEC_HEADER_LEN);
+                kfree_skb(skb);
+                if (skb2 == NULL) return 0;
+                skb = skb2;
+        }
+        skb_push(skb, 2);
+
+        /* Put le header to place, works for TokenRing too */
+        lec_h = (struct lecdatahdr_8023*)skb->data;
+        lec_h->le_header = htons(priv->lecid); 
+
+#ifdef CONFIG_TR
+        /* Ugly. Use this to realign Token Ring packets for
+         * e.g. PCA-200E driver. */
+        if (priv->is_trdev) {
+                skb2 = skb_realloc_headroom(skb, LEC_HEADER_LEN);
+                kfree_skb(skb);
+                if (skb2 == NULL) return 0;
+                skb = skb2;
+        }
+#endif
+
+#if DUMP_PACKETS > 0
+        printk("%s: send datalen:%ld lecid:%4.4x\n", dev->name,
+               skb->len, priv->lecid);
+#if DUMP_PACKETS >= 2
+        for(i=0;i<skb->len && i <99;i++) {
+                sprintf(buf+i*3,"%2.2x ",0xff&skb->data[i]);
+        }
+#elif DUMP_PACKETS >= 1
+        for(i=0;i<skb->len && i < 30;i++) {
+                sprintf(buf+i*3,"%2.2x ", 0xff&skb->data[i]);
+        }
+#endif /* DUMP_PACKETS >= 1 */
+        if (i==skb->len)
+                printk("%s\n",buf);
+        else
+                printk("%s...\n",buf);
+#endif /* DUMP_PACKETS > 0 */
+
+        /* Minimum ethernet-frame size */
+#ifdef CONFIG_TR
+        if (priv->is_trdev)
+                min_frame_size = LEC_MINIMUM_8025_SIZE;
+	else
+#endif
+        min_frame_size = LEC_MINIMUM_8023_SIZE;
+        if (skb->len < min_frame_size) {
+                if ((skb->len + skb_tailroom(skb)) < min_frame_size) {
+                        skb2 = skb_copy_expand(skb, 0,
+                            min_frame_size - skb->truesize, GFP_ATOMIC);
+                                dev_kfree_skb(skb);
+                        if (skb2 == NULL) {
+                                priv->stats.tx_dropped++;
+                                return 0;
+                        }
+                        skb = skb2;
+                }
+		skb_put(skb, min_frame_size - skb->len);
+        }
+        
+        /* Send to right vcc */
+        is_rdesc = 0;
+        dst = lec_h->h_dest;
+#ifdef CONFIG_TR
+        if (priv->is_trdev) {
+                dst = get_tr_dst(skb->data+2, rdesc);
+                if (dst == NULL) {
+                        dst = rdesc;
+                        is_rdesc = 1;
+                }
+        }
+#endif
+        entry = NULL;
+        vcc = lec_arp_resolve(priv, dst, is_rdesc, &entry);
+        DPRINTK("%s:vcc:%p vcc_flags:%x, entry:%p\n", dev->name,
+                vcc, vcc?vcc->flags:0, entry);
+        if (!vcc || !test_bit(ATM_VF_READY,&vcc->flags)) {    
+                if (entry && (entry->tx_wait.qlen < LEC_UNRES_QUE_LEN)) {
+                        DPRINTK("%s:lec_start_xmit: queuing packet, ", dev->name);
+                        DPRINTK("MAC address 0x%02x:%02x:%02x:%02x:%02x:%02x\n",
+                                lec_h->h_dest[0], lec_h->h_dest[1], lec_h->h_dest[2],
+                                lec_h->h_dest[3], lec_h->h_dest[4], lec_h->h_dest[5]);
+                        skb_queue_tail(&entry->tx_wait, skb);
+                } else {
+                        DPRINTK("%s:lec_start_xmit: tx queue full or no arp entry, dropping, ", dev->name);
+                        DPRINTK("MAC address 0x%02x:%02x:%02x:%02x:%02x:%02x\n",
+                                lec_h->h_dest[0], lec_h->h_dest[1], lec_h->h_dest[2],
+                                lec_h->h_dest[3], lec_h->h_dest[4], lec_h->h_dest[5]);
+                        priv->stats.tx_dropped++;
+                        dev_kfree_skb(skb);
+                }
+                return 0;
+        }
+                
+#if DUMP_PACKETS > 0                    
+        printk("%s:sending to vpi:%d vci:%d\n", dev->name,
+               vcc->vpi, vcc->vci);       
+#endif /* DUMP_PACKETS > 0 */
+                
+        while (entry && (skb2 = skb_dequeue(&entry->tx_wait))) {
+                DPRINTK("lec.c: emptying tx queue, ");
+                DPRINTK("MAC address 0x%02x:%02x:%02x:%02x:%02x:%02x\n",
+                        lec_h->h_dest[0], lec_h->h_dest[1], lec_h->h_dest[2],
+                        lec_h->h_dest[3], lec_h->h_dest[4], lec_h->h_dest[5]);
+		lec_send(vcc, skb2, priv);
+        }
+
+	lec_send(vcc, skb, priv);
+
+	if (!atm_may_send(vcc, 0)) {
+		struct lec_vcc_priv *vpriv = LEC_VCC_PRIV(vcc);
+
+		vpriv->xoff = 1;
+		netif_stop_queue(dev);
+
+		/*
+		 * vcc->pop() might have occurred in between, making
+		 * the vcc usuable again.  Since xmit is serialized,
+		 * this is the only situation we have to re-test.
+		 */
+
+		if (atm_may_send(vcc, 0))
+			netif_wake_queue(dev);
+	}
+
+	dev->trans_start = jiffies;
+        return 0;
+}
+
+/* The inverse routine to net_open(). */
+static int 
+lec_close(struct net_device *dev) 
+{
+        netif_stop_queue(dev);
+        return 0;
+}
+
+/*
+ * Get the current statistics.
+ * This may be called with the card open or closed.
+ */
+static struct net_device_stats *
+lec_get_stats(struct net_device *dev)
+{
+        return &((struct lec_priv *)dev->priv)->stats;
+}
+
+static int 
+lec_atm_send(struct atm_vcc *vcc, struct sk_buff *skb)
+{
+	unsigned long flags;
+        struct net_device *dev = (struct net_device*)vcc->proto_data;
+        struct lec_priv *priv = (struct lec_priv*)dev->priv;
+        struct atmlec_msg *mesg;
+        struct lec_arp_table *entry;
+        int i;
+        char *tmp; /* FIXME */
+
+	atomic_sub(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc);
+        mesg = (struct atmlec_msg *)skb->data;
+        tmp = skb->data;
+        tmp += sizeof(struct atmlec_msg);
+        DPRINTK("%s: msg from zeppelin:%d\n", dev->name, mesg->type);
+        switch(mesg->type) {
+        case l_set_mac_addr:
+                for (i=0;i<6;i++) {
+                        dev->dev_addr[i] = mesg->content.normal.mac_addr[i];
+                }    
+                break;
+        case l_del_mac_addr:
+                for(i=0;i<6;i++) {
+                        dev->dev_addr[i] = 0;
+                }
+                break;
+        case l_addr_delete:
+                lec_addr_delete(priv, mesg->content.normal.atm_addr, 
+                                mesg->content.normal.flag);
+                break;
+        case l_topology_change:
+                priv->topology_change = mesg->content.normal.flag;  
+                break;
+        case l_flush_complete:
+                lec_flush_complete(priv, mesg->content.normal.flag);
+                break;
+        case l_narp_req: /* LANE2: see 7.1.35 in the lane2 spec */
+		spin_lock_irqsave(&priv->lec_arp_lock, flags);
+                entry = lec_arp_find(priv, mesg->content.normal.mac_addr);
+                lec_arp_remove(priv, entry);
+		spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+
+                if (mesg->content.normal.no_source_le_narp)
+                        break;
+                /* FALL THROUGH */
+        case l_arp_update:
+                lec_arp_update(priv, mesg->content.normal.mac_addr,
+                               mesg->content.normal.atm_addr,
+                               mesg->content.normal.flag,
+                               mesg->content.normal.targetless_le_arp);
+                DPRINTK("lec: in l_arp_update\n");
+                if (mesg->sizeoftlvs != 0) { /* LANE2 3.1.5 */
+                        DPRINTK("lec: LANE2 3.1.5, got tlvs, size %d\n", mesg->sizeoftlvs);
+                        lane2_associate_ind(dev,
+                                            mesg->content.normal.mac_addr,
+                                            tmp, mesg->sizeoftlvs);
+                }
+                break;
+        case l_config:
+                priv->maximum_unknown_frame_count = 
+                        mesg->content.config.maximum_unknown_frame_count;
+                priv->max_unknown_frame_time = 
+                        (mesg->content.config.max_unknown_frame_time*HZ);
+                priv->max_retry_count = 
+                        mesg->content.config.max_retry_count;
+                priv->aging_time = (mesg->content.config.aging_time*HZ);
+                priv->forward_delay_time = 
+                        (mesg->content.config.forward_delay_time*HZ);
+                priv->arp_response_time = 
+                        (mesg->content.config.arp_response_time*HZ);
+                priv->flush_timeout = (mesg->content.config.flush_timeout*HZ);
+                priv->path_switching_delay = 
+                        (mesg->content.config.path_switching_delay*HZ);
+                priv->lane_version = mesg->content.config.lane_version; /* LANE2 */
+		priv->lane2_ops = NULL;
+		if (priv->lane_version > 1)
+			priv->lane2_ops = &lane2_ops;
+		if (dev->change_mtu(dev, mesg->content.config.mtu))
+			printk("%s: change_mtu to %d failed\n", dev->name,
+			    mesg->content.config.mtu);
+		priv->is_proxy = mesg->content.config.is_proxy;
+                break;
+        case l_flush_tran_id:
+                lec_set_flush_tran_id(priv, mesg->content.normal.atm_addr,
+                                      mesg->content.normal.flag);
+                break;
+        case l_set_lecid:
+                priv->lecid=(unsigned short)(0xffff&mesg->content.normal.flag);
+                break;
+        case l_should_bridge: {
+#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
+                struct net_bridge_fdb_entry *f;
+
+                DPRINTK("%s: bridge zeppelin asks about 0x%02x:%02x:%02x:%02x:%02x:%02x\n",
+                        dev->name,
+                        mesg->content.proxy.mac_addr[0], mesg->content.proxy.mac_addr[1],
+                        mesg->content.proxy.mac_addr[2], mesg->content.proxy.mac_addr[3],
+                        mesg->content.proxy.mac_addr[4], mesg->content.proxy.mac_addr[5]);
+
+                if (br_fdb_get_hook == NULL || dev->br_port == NULL)
+                        break;
+
+                f = br_fdb_get_hook(dev->br_port->br, mesg->content.proxy.mac_addr);
+                if (f != NULL &&
+                    f->dst->dev != dev &&
+                    f->dst->state == BR_STATE_FORWARDING) {
+                                /* hit from bridge table, send LE_ARP_RESPONSE */
+                        struct sk_buff *skb2;
+			struct sock *sk;
+
+                        DPRINTK("%s: entry found, responding to zeppelin\n", dev->name);
+                        skb2 = alloc_skb(sizeof(struct atmlec_msg), GFP_ATOMIC);
+                        if (skb2 == NULL) {
+                                br_fdb_put_hook(f);
+                                break;
+                        }
+                        skb2->len = sizeof(struct atmlec_msg);
+                        memcpy(skb2->data, mesg, sizeof(struct atmlec_msg));
+                        atm_force_charge(priv->lecd, skb2->truesize);
+			sk = sk_atm(priv->lecd);
+                        skb_queue_tail(&sk->sk_receive_queue, skb2);
+                        sk->sk_data_ready(sk, skb2->len);
+                }
+                if (f != NULL) br_fdb_put_hook(f);
+#endif /* defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) */
+                }
+                break;
+        default:
+                printk("%s: Unknown message type %d\n", dev->name, mesg->type);
+                dev_kfree_skb(skb);
+                return -EINVAL;
+        }
+        dev_kfree_skb(skb);
+        return 0;
+}
+
+static void 
+lec_atm_close(struct atm_vcc *vcc)
+{
+        struct sk_buff *skb;
+        struct net_device *dev = (struct net_device *)vcc->proto_data;
+        struct lec_priv *priv = (struct lec_priv *)dev->priv;
+
+        priv->lecd = NULL;
+        /* Do something needful? */
+
+        netif_stop_queue(dev);
+        lec_arp_destroy(priv);
+
+        if (skb_peek(&sk_atm(vcc)->sk_receive_queue))
+		printk("%s lec_atm_close: closing with messages pending\n",
+                       dev->name);
+        while ((skb = skb_dequeue(&sk_atm(vcc)->sk_receive_queue)) != NULL) {
+                atm_return(vcc, skb->truesize);
+		dev_kfree_skb(skb);
+        }
+  
+	printk("%s: Shut down!\n", dev->name);
+        module_put(THIS_MODULE);
+}
+
+static struct atmdev_ops lecdev_ops = {
+        .close	= lec_atm_close,
+        .send	= lec_atm_send
+};
+
+static struct atm_dev lecatm_dev = {
+	.ops	= &lecdev_ops,
+	.type	= "lec",
+	.number	= 999,	/* dummy device number */
+	.lock	= SPIN_LOCK_UNLOCKED
+};
+
+/*
+ * LANE2: new argument struct sk_buff *data contains
+ * the LE_ARP based TLVs introduced in the LANE2 spec
+ */
+static int 
+send_to_lecd(struct lec_priv *priv, atmlec_msg_type type, 
+             unsigned char *mac_addr, unsigned char *atm_addr,
+             struct sk_buff *data)
+{
+	struct sock *sk;
+	struct sk_buff *skb;
+	struct atmlec_msg *mesg;
+
+	if (!priv || !priv->lecd) {
+		return -1;
+	}
+	skb = alloc_skb(sizeof(struct atmlec_msg), GFP_ATOMIC);
+	if (!skb)
+		return -1;
+	skb->len = sizeof(struct atmlec_msg);
+	mesg = (struct atmlec_msg *)skb->data;
+        memset(mesg, 0, sizeof(struct atmlec_msg));
+	mesg->type = type;
+        if (data != NULL)
+                mesg->sizeoftlvs = data->len;
+	if (mac_addr)
+		memcpy(&mesg->content.normal.mac_addr, mac_addr, ETH_ALEN);
+        else
+                mesg->content.normal.targetless_le_arp = 1;
+	if (atm_addr)
+		memcpy(&mesg->content.normal.atm_addr, atm_addr, ATM_ESA_LEN);
+
+        atm_force_charge(priv->lecd, skb->truesize);
+	sk = sk_atm(priv->lecd);
+	skb_queue_tail(&sk->sk_receive_queue, skb);
+        sk->sk_data_ready(sk, skb->len);
+
+        if (data != NULL) {
+                DPRINTK("lec: about to send %d bytes of data\n", data->len);
+                atm_force_charge(priv->lecd, data->truesize);
+                skb_queue_tail(&sk->sk_receive_queue, data);
+                sk->sk_data_ready(sk, skb->len);
+        }
+
+        return 0;
+}
+
+/* shamelessly stolen from drivers/net/net_init.c */
+static int lec_change_mtu(struct net_device *dev, int new_mtu)
+{
+        if ((new_mtu < 68) || (new_mtu > 18190))
+                return -EINVAL;
+        dev->mtu = new_mtu;
+        return 0;
+}
+
+static void lec_set_multicast_list(struct net_device *dev)
+{
+	/* by default, all multicast frames arrive over the bus.
+         * eventually support selective multicast service
+         */
+        return;
+}
+
+static void 
+lec_init(struct net_device *dev)
+{
+        dev->change_mtu = lec_change_mtu;
+        dev->open = lec_open;
+        dev->stop = lec_close;
+        dev->hard_start_xmit = lec_start_xmit;
+	dev->tx_timeout = lec_tx_timeout;
+
+        dev->get_stats = lec_get_stats;
+        dev->set_multicast_list = lec_set_multicast_list;
+        dev->do_ioctl  = NULL;
+        printk("%s: Initialized!\n",dev->name);
+        return;
+}
+
+static unsigned char lec_ctrl_magic[] = {
+        0xff,
+        0x00,
+        0x01,
+        0x01 };
+
+static void 
+lec_push(struct atm_vcc *vcc, struct sk_buff *skb)
+{
+        struct net_device *dev = (struct net_device *)vcc->proto_data;
+        struct lec_priv *priv = (struct lec_priv *)dev->priv; 
+
+#if DUMP_PACKETS >0
+        int i=0;
+        char buf[300];
+
+        printk("%s: lec_push vcc vpi:%d vci:%d\n", dev->name,
+               vcc->vpi, vcc->vci);
+#endif
+        if (!skb) {
+                DPRINTK("%s: null skb\n",dev->name);
+                lec_vcc_close(priv, vcc);
+                return;
+        }
+#if DUMP_PACKETS > 0
+        printk("%s: rcv datalen:%ld lecid:%4.4x\n", dev->name,
+               skb->len, priv->lecid);
+#if DUMP_PACKETS >= 2
+        for(i=0;i<skb->len && i <99;i++) {
+                sprintf(buf+i*3,"%2.2x ",0xff&skb->data[i]);
+        }
+#elif DUMP_PACKETS >= 1
+        for(i=0;i<skb->len && i < 30;i++) {
+                sprintf(buf+i*3,"%2.2x ", 0xff&skb->data[i]);
+        }
+#endif /* DUMP_PACKETS >= 1 */
+        if (i==skb->len)
+                printk("%s\n",buf);
+        else
+                printk("%s...\n",buf);
+#endif /* DUMP_PACKETS > 0 */
+        if (memcmp(skb->data, lec_ctrl_magic, 4) ==0) { /* Control frame, to daemon*/
+		struct sock *sk = sk_atm(vcc);
+
+                DPRINTK("%s: To daemon\n",dev->name);
+                skb_queue_tail(&sk->sk_receive_queue, skb);
+                sk->sk_data_ready(sk, skb->len);
+        } else { /* Data frame, queue to protocol handlers */
+                unsigned char *dst;
+
+                atm_return(vcc,skb->truesize);
+                if (*(uint16_t *)skb->data == htons(priv->lecid) ||
+                    !priv->lecd ||
+                    !(dev->flags & IFF_UP)) { 
+                        /* Probably looping back, or if lecd is missing,
+                           lecd has gone down */
+                        DPRINTK("Ignoring frame...\n");
+                        dev_kfree_skb(skb);
+                        return;
+                }
+#ifdef CONFIG_TR
+                if (priv->is_trdev) dst = ((struct lecdatahdr_8025 *)skb->data)->h_dest;
+                else
+#endif
+                dst = ((struct lecdatahdr_8023 *)skb->data)->h_dest;
+
+                if (!(dst[0]&0x01) &&   /* Never filter Multi/Broadcast */
+                    !priv->is_proxy &&  /* Proxy wants all the packets */
+		    memcmp(dst, dev->dev_addr, dev->addr_len)) {
+                        dev_kfree_skb(skb);
+                        return;
+                }
+                if (priv->lec_arp_empty_ones) {
+                        lec_arp_check_empties(priv, vcc, skb);
+                }
+                skb->dev = dev;
+                skb_pull(skb, 2); /* skip lec_id */
+#ifdef CONFIG_TR
+                if (priv->is_trdev) skb->protocol = tr_type_trans(skb, dev);
+                else
+#endif
+                skb->protocol = eth_type_trans(skb, dev);
+                priv->stats.rx_packets++;
+                priv->stats.rx_bytes += skb->len;
+                memset(ATM_SKB(skb), 0, sizeof(struct atm_skb_data));
+                netif_rx(skb);
+        }
+}
+
+static void
+lec_pop(struct atm_vcc *vcc, struct sk_buff *skb)
+{
+	struct lec_vcc_priv *vpriv = LEC_VCC_PRIV(vcc);
+	struct net_device *dev = skb->dev;
+
+	if (vpriv == NULL) {
+		printk("lec_pop(): vpriv = NULL!?!?!?\n");
+		return;
+	}
+
+	vpriv->old_pop(vcc, skb);
+
+	if (vpriv->xoff && atm_may_send(vcc, 0)) {
+		vpriv->xoff = 0;
+		if (netif_running(dev) && netif_queue_stopped(dev))
+			netif_wake_queue(dev);
+	}
+}
+
+static int 
+lec_vcc_attach(struct atm_vcc *vcc, void __user *arg)
+{
+	struct lec_vcc_priv *vpriv;
+        int bytes_left;
+        struct atmlec_ioc ioc_data;
+
+        /* Lecd must be up in this case */
+        bytes_left = copy_from_user(&ioc_data, arg, sizeof(struct atmlec_ioc));
+        if (bytes_left != 0) {
+                printk("lec: lec_vcc_attach, copy from user failed for %d bytes\n",
+                       bytes_left);
+        }
+        if (ioc_data.dev_num < 0 || ioc_data.dev_num >= MAX_LEC_ITF || 
+            !dev_lec[ioc_data.dev_num])
+                return -EINVAL;
+	if (!(vpriv = kmalloc(sizeof(struct lec_vcc_priv), GFP_KERNEL)))
+		return -ENOMEM;
+	vpriv->xoff = 0;
+	vpriv->old_pop = vcc->pop;
+	vcc->user_back = vpriv;
+	vcc->pop = lec_pop;
+        lec_vcc_added(dev_lec[ioc_data.dev_num]->priv, 
+                      &ioc_data, vcc, vcc->push);
+        vcc->proto_data = dev_lec[ioc_data.dev_num];
+        vcc->push = lec_push;
+        return 0;
+}
+
+static int 
+lec_mcast_attach(struct atm_vcc *vcc, int arg)
+{
+        if (arg <0 || arg >= MAX_LEC_ITF || !dev_lec[arg])
+                return -EINVAL;
+        vcc->proto_data = dev_lec[arg];
+        return (lec_mcast_make((struct lec_priv*)dev_lec[arg]->priv, vcc));
+}
+
+/* Initialize device. */
+static int 
+lecd_attach(struct atm_vcc *vcc, int arg)
+{  
+        int i;
+        struct lec_priv *priv;
+
+        if (arg<0)
+                i = 0;
+        else
+                i = arg;
+#ifdef CONFIG_TR
+        if (arg >= MAX_LEC_ITF)
+                return -EINVAL;
+#else /* Reserve the top NUM_TR_DEVS for TR */
+        if (arg >= (MAX_LEC_ITF-NUM_TR_DEVS))
+                return -EINVAL;
+#endif
+        if (!dev_lec[i]) {
+                int is_trdev, size;
+
+                is_trdev = 0;
+                if (i >= (MAX_LEC_ITF - NUM_TR_DEVS))
+                        is_trdev = 1;
+
+                size = sizeof(struct lec_priv);
+#ifdef CONFIG_TR
+                if (is_trdev)
+                        dev_lec[i] = alloc_trdev(size);
+                else
+#endif
+                dev_lec[i] = alloc_etherdev(size);
+                if (!dev_lec[i])
+                        return -ENOMEM;
+                snprintf(dev_lec[i]->name, IFNAMSIZ, "lec%d", i);
+                if (register_netdev(dev_lec[i])) {
+                        free_netdev(dev_lec[i]);
+                        return -EINVAL;
+                }
+
+                priv = dev_lec[i]->priv;
+                priv->is_trdev = is_trdev;
+                lec_init(dev_lec[i]);
+        } else {
+                priv = dev_lec[i]->priv;
+                if (priv->lecd)
+                        return -EADDRINUSE;
+        }
+        lec_arp_init(priv);
+	priv->itfnum = i;  /* LANE2 addition */
+        priv->lecd = vcc;
+        vcc->dev = &lecatm_dev;
+        vcc_insert_socket(sk_atm(vcc));
+        
+        vcc->proto_data = dev_lec[i];
+	set_bit(ATM_VF_META,&vcc->flags);
+	set_bit(ATM_VF_READY,&vcc->flags);
+
+        /* Set default values to these variables */
+        priv->maximum_unknown_frame_count = 1;
+        priv->max_unknown_frame_time = (1*HZ);
+        priv->vcc_timeout_period = (1200*HZ);
+        priv->max_retry_count = 1;
+        priv->aging_time = (300*HZ);
+        priv->forward_delay_time = (15*HZ);
+        priv->topology_change = 0;
+        priv->arp_response_time = (1*HZ);
+        priv->flush_timeout = (4*HZ);
+        priv->path_switching_delay = (6*HZ);
+
+        if (dev_lec[i]->flags & IFF_UP) {
+                netif_start_queue(dev_lec[i]);
+        }
+        __module_get(THIS_MODULE);
+        return i;
+}
+
+#ifdef CONFIG_PROC_FS
+static char* lec_arp_get_status_string(unsigned char status)
+{
+	static char *lec_arp_status_string[] = {
+		"ESI_UNKNOWN       ",
+		"ESI_ARP_PENDING   ",
+		"ESI_VC_PENDING    ",
+		"<Undefined>       ",
+		"ESI_FLUSH_PENDING ",
+		"ESI_FORWARD_DIRECT"
+	};
+
+	if (status > ESI_FORWARD_DIRECT)
+		status = 3;	/* ESI_UNDEFINED */
+	return lec_arp_status_string[status];
+}
+
+static void lec_info(struct seq_file *seq, struct lec_arp_table *entry)
+{
+	int i;
+
+	for (i = 0; i < ETH_ALEN; i++)
+		seq_printf(seq, "%2.2x", entry->mac_addr[i] & 0xff);
+	seq_printf(seq, " ");
+	for (i = 0; i < ATM_ESA_LEN; i++)
+		seq_printf(seq, "%2.2x", entry->atm_addr[i] & 0xff);
+	seq_printf(seq, " %s %4.4x", lec_arp_get_status_string(entry->status),
+		   entry->flags & 0xffff);
+	if (entry->vcc)
+		seq_printf(seq, "%3d %3d ", entry->vcc->vpi, entry->vcc->vci);
+	else
+	        seq_printf(seq, "        ");
+	if (entry->recv_vcc) {
+		seq_printf(seq, "     %3d %3d", entry->recv_vcc->vpi,
+			   entry->recv_vcc->vci);
+        }
+        seq_putc(seq, '\n');
+}
+
+
+struct lec_state {
+	unsigned long flags;
+	struct lec_priv *locked;
+	struct lec_arp_table *entry;
+	struct net_device *dev;
+	int itf;
+	int arp_table;
+	int misc_table;
+};
+
+static void *lec_tbl_walk(struct lec_state *state, struct lec_arp_table *tbl,
+			  loff_t *l)
+{
+	struct lec_arp_table *e = state->entry;
+
+	if (!e)
+		e = tbl;
+	if (e == (void *)1) {
+		e = tbl;
+		--*l;
+	}
+	for (; e; e = e->next) {
+		if (--*l < 0)
+			break;
+	}
+	state->entry = e;
+	return (*l < 0) ? state : NULL;
+}
+
+static void *lec_arp_walk(struct lec_state *state, loff_t *l,
+			      struct lec_priv *priv)
+{
+	void *v = NULL;
+	int p;
+
+	for (p = state->arp_table; p < LEC_ARP_TABLE_SIZE; p++) {
+		v = lec_tbl_walk(state, priv->lec_arp_tables[p], l);
+		if (v)
+			break;
+	}
+	state->arp_table = p;
+	return v;
+}
+
+static void *lec_misc_walk(struct lec_state *state, loff_t *l,
+			   struct lec_priv *priv)
+{
+	struct lec_arp_table *lec_misc_tables[] = {
+		priv->lec_arp_empty_ones,
+		priv->lec_no_forward,
+		priv->mcast_fwds
+	};
+	void *v = NULL;
+	int q;
+
+	for (q = state->misc_table; q < ARRAY_SIZE(lec_misc_tables); q++) {
+		v = lec_tbl_walk(state, lec_misc_tables[q], l);
+		if (v)
+			break;
+	}
+	state->misc_table = q;
+	return v;
+}
+
+static void *lec_priv_walk(struct lec_state *state, loff_t *l,
+			   struct lec_priv *priv)
+{
+	if (!state->locked) {
+		state->locked = priv;
+		spin_lock_irqsave(&priv->lec_arp_lock, state->flags);
+	}
+	if (!lec_arp_walk(state, l, priv) &&
+	    !lec_misc_walk(state, l, priv)) {
+		spin_unlock_irqrestore(&priv->lec_arp_lock, state->flags);
+		state->locked = NULL;
+		/* Partial state reset for the next time we get called */
+		state->arp_table = state->misc_table = 0;
+	}
+	return state->locked;
+}
+
+static void *lec_itf_walk(struct lec_state *state, loff_t *l)
+{
+	struct net_device *dev;
+	void *v;
+
+	dev = state->dev ? state->dev : dev_lec[state->itf];
+	v = (dev && dev->priv) ? lec_priv_walk(state, l, dev->priv) : NULL;
+	if (!v && dev) {
+		dev_put(dev);
+		/* Partial state reset for the next time we get called */
+		dev = NULL;
+	}
+	state->dev = dev;
+	return v;
+}
+
+static void *lec_get_idx(struct lec_state *state, loff_t l)
+{
+	void *v = NULL;
+
+	for (; state->itf < MAX_LEC_ITF; state->itf++) {
+		v = lec_itf_walk(state, &l);
+		if (v)
+			break;
+	}
+	return v; 
+}
+
+static void *lec_seq_start(struct seq_file *seq, loff_t *pos)
+{
+	struct lec_state *state = seq->private;
+
+	state->itf = 0;
+	state->dev = NULL;
+	state->locked = NULL;
+	state->arp_table = 0;
+	state->misc_table = 0;
+	state->entry = (void *)1;
+
+	return *pos ? lec_get_idx(state, *pos) : (void*)1;
+}
+
+static void lec_seq_stop(struct seq_file *seq, void *v)
+{
+	struct lec_state *state = seq->private;
+
+	if (state->dev) {
+		spin_unlock_irqrestore(&state->locked->lec_arp_lock,
+				       state->flags);
+		dev_put(state->dev);
+	}
+}
+
+static void *lec_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	struct lec_state *state = seq->private;
+
+	v = lec_get_idx(state, 1);
+	*pos += !!PTR_ERR(v);
+	return v;
+}
+
+static int lec_seq_show(struct seq_file *seq, void *v)
+{
+	static char lec_banner[] = "Itf  MAC          ATM destination" 
+		"                          Status            Flags "
+		"VPI/VCI Recv VPI/VCI\n";
+
+	if (v == (void *)1)
+		seq_puts(seq, lec_banner);
+	else {
+		struct lec_state *state = seq->private;
+		struct net_device *dev = state->dev; 
+
+		seq_printf(seq, "%s ", dev->name);
+		lec_info(seq, state->entry);
+	}
+	return 0;
+}
+
+static struct seq_operations lec_seq_ops = {
+	.start	= lec_seq_start,
+	.next	= lec_seq_next,
+	.stop	= lec_seq_stop,
+	.show	= lec_seq_show,
+};
+
+static int lec_seq_open(struct inode *inode, struct file *file)
+{
+	struct lec_state *state;
+	struct seq_file *seq;
+	int rc = -EAGAIN;
+
+	state = kmalloc(sizeof(*state), GFP_KERNEL);
+	if (!state) {
+		rc = -ENOMEM;
+		goto out;
+	}
+
+	rc = seq_open(file, &lec_seq_ops);
+	if (rc)
+		goto out_kfree;
+	seq = file->private_data;
+	seq->private = state;
+out:
+	return rc;
+
+out_kfree:
+	kfree(state);
+	goto out;
+}
+
+static int lec_seq_release(struct inode *inode, struct file *file)
+{
+	return seq_release_private(inode, file);
+}
+
+static struct file_operations lec_seq_fops = {
+	.owner		= THIS_MODULE,
+	.open		= lec_seq_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= lec_seq_release,
+};
+#endif
+
+static int lane_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
+{
+	struct atm_vcc *vcc = ATM_SD(sock);
+	int err = 0;
+	
+	switch (cmd) {
+		case ATMLEC_CTRL: 
+		case ATMLEC_MCAST:
+		case ATMLEC_DATA:
+			if (!capable(CAP_NET_ADMIN))
+				return -EPERM;
+			break;
+		default:
+			return -ENOIOCTLCMD;
+	}
+
+	switch (cmd) {
+		case ATMLEC_CTRL:
+			err = lecd_attach(vcc, (int) arg);
+			if (err >= 0)
+				sock->state = SS_CONNECTED;
+			break;
+		case ATMLEC_MCAST:
+			err = lec_mcast_attach(vcc, (int) arg);
+			break;
+		case ATMLEC_DATA:
+			err = lec_vcc_attach(vcc, (void __user *) arg);
+			break;
+	}
+
+	return err;
+}
+
+static struct atm_ioctl lane_ioctl_ops = {
+	.owner  = THIS_MODULE,
+	.ioctl  = lane_ioctl,
+};
+
+static int __init lane_module_init(void)
+{
+#ifdef CONFIG_PROC_FS
+	struct proc_dir_entry *p;
+
+	p = create_proc_entry("lec", S_IRUGO, atm_proc_root);
+	if (p)
+		p->proc_fops = &lec_seq_fops;
+#endif
+
+	register_atm_ioctl(&lane_ioctl_ops);
+        printk("lec.c: " __DATE__ " " __TIME__ " initialized\n");
+        return 0;
+}
+
+static void __exit lane_module_cleanup(void)
+{
+        int i;
+        struct lec_priv *priv;
+
+	remove_proc_entry("lec", atm_proc_root);
+
+	deregister_atm_ioctl(&lane_ioctl_ops);
+
+        for (i = 0; i < MAX_LEC_ITF; i++) {
+                if (dev_lec[i] != NULL) {
+                        priv = (struct lec_priv *)dev_lec[i]->priv;
+			unregister_netdev(dev_lec[i]);
+                        free_netdev(dev_lec[i]);
+                        dev_lec[i] = NULL;
+                }
+        }
+
+        return;                                    
+}
+
+module_init(lane_module_init);
+module_exit(lane_module_cleanup);
+
+/*
+ * LANE2: 3.1.3, LE_RESOLVE.request
+ * Non force allocates memory and fills in *tlvs, fills in *sizeoftlvs.
+ * If sizeoftlvs == NULL the default TLVs associated with with this
+ * lec will be used.
+ * If dst_mac == NULL, targetless LE_ARP will be sent
+ */
+static int lane2_resolve(struct net_device *dev, u8 *dst_mac, int force,
+    u8 **tlvs, u32 *sizeoftlvs)
+{
+	unsigned long flags;
+        struct lec_priv *priv = (struct lec_priv *)dev->priv;
+        struct lec_arp_table *table;
+        struct sk_buff *skb;
+        int retval;
+
+        if (force == 0) {
+		spin_lock_irqsave(&priv->lec_arp_lock, flags);
+                table = lec_arp_find(priv, dst_mac);
+		spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+                if(table == NULL)
+                        return -1;
+                
+                *tlvs = kmalloc(table->sizeoftlvs, GFP_ATOMIC);
+                if (*tlvs == NULL)
+                        return -1;
+                
+                memcpy(*tlvs, table->tlvs, table->sizeoftlvs);
+                *sizeoftlvs = table->sizeoftlvs;
+                
+                return 0;
+        }
+
+	if (sizeoftlvs == NULL)
+		retval = send_to_lecd(priv, l_arp_xmt, dst_mac, NULL, NULL);
+		
+	else {
+		skb = alloc_skb(*sizeoftlvs, GFP_ATOMIC);
+		if (skb == NULL)
+			return -1;
+		skb->len = *sizeoftlvs;
+		memcpy(skb->data, *tlvs, *sizeoftlvs);
+		retval = send_to_lecd(priv, l_arp_xmt, dst_mac, NULL, skb);
+	}
+        return retval;
+}        
+
+
+/*
+ * LANE2: 3.1.4, LE_ASSOCIATE.request
+ * Associate the *tlvs with the *lan_dst address.
+ * Will overwrite any previous association
+ * Returns 1 for success, 0 for failure (out of memory)
+ *
+ */
+static int lane2_associate_req (struct net_device *dev, u8 *lan_dst,
+                         u8 *tlvs, u32 sizeoftlvs)
+{
+        int retval;
+        struct sk_buff *skb;
+        struct lec_priv *priv = (struct lec_priv*)dev->priv;
+
+        if ( memcmp(lan_dst, dev->dev_addr, ETH_ALEN) != 0 )
+                return (0);       /* not our mac address */
+
+        kfree(priv->tlvs); /* NULL if there was no previous association */
+
+        priv->tlvs = kmalloc(sizeoftlvs, GFP_KERNEL);
+        if (priv->tlvs == NULL)
+                return (0);
+        priv->sizeoftlvs = sizeoftlvs;
+        memcpy(priv->tlvs, tlvs, sizeoftlvs);
+
+        skb = alloc_skb(sizeoftlvs, GFP_ATOMIC);
+        if (skb == NULL)
+                return 0;
+        skb->len = sizeoftlvs;
+        memcpy(skb->data, tlvs, sizeoftlvs);
+        retval = send_to_lecd(priv, l_associate_req, NULL, NULL, skb);
+        if (retval != 0)
+                printk("lec.c: lane2_associate_req() failed\n");
+        /* If the previous association has changed we must
+         * somehow notify other LANE entities about the change
+         */
+        return (1);
+}
+
+/*
+ * LANE2: 3.1.5, LE_ASSOCIATE.indication
+ *
+ */
+static void lane2_associate_ind (struct net_device *dev, u8 *mac_addr,
+    u8 *tlvs, u32 sizeoftlvs)
+{
+#if 0
+        int i = 0;
+#endif
+	struct lec_priv *priv = (struct lec_priv *)dev->priv;
+#if 0 /* Why have the TLVs in LE_ARP entries since we do not use them? When you
+         uncomment this code, make sure the TLVs get freed when entry is killed */
+        struct lec_arp_table *entry = lec_arp_find(priv, mac_addr);
+
+        if (entry == NULL)
+                return;     /* should not happen */
+
+        kfree(entry->tlvs);
+
+        entry->tlvs = kmalloc(sizeoftlvs, GFP_KERNEL);
+        if (entry->tlvs == NULL)
+                return;
+
+        entry->sizeoftlvs = sizeoftlvs;
+        memcpy(entry->tlvs, tlvs, sizeoftlvs);
+#endif
+#if 0
+        printk("lec.c: lane2_associate_ind()\n");
+        printk("dump of tlvs, sizeoftlvs=%d\n", sizeoftlvs);
+        while (i < sizeoftlvs)
+                printk("%02x ", tlvs[i++]);
+        
+        printk("\n");
+#endif
+
+        /* tell MPOA about the TLVs we saw */
+        if (priv->lane2_ops && priv->lane2_ops->associate_indicator) {
+                priv->lane2_ops->associate_indicator(dev, mac_addr,
+                                                     tlvs, sizeoftlvs);
+        }
+        return;
+}
+
+/*
+ * Here starts what used to lec_arpc.c
+ *
+ * lec_arpc.c was added here when making
+ * lane client modular. October 1997
+ *
+ */
+
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <asm/param.h>
+#include <asm/atomic.h>
+#include <linux/inetdevice.h>
+#include <net/route.h>
+
+
+#if 0
+#define DPRINTK(format,args...)
+/*
+#define DPRINTK printk
+*/
+#endif
+#define DEBUG_ARP_TABLE 0
+
+#define LEC_ARP_REFRESH_INTERVAL (3*HZ)
+
+static void lec_arp_check_expire(unsigned long data);
+static void lec_arp_expire_arp(unsigned long data);
+
+/* 
+ * Arp table funcs
+ */
+
+#define HASH(ch) (ch & (LEC_ARP_TABLE_SIZE -1))
+
+/*
+ * Initialization of arp-cache
+ */
+static void 
+lec_arp_init(struct lec_priv *priv)
+{
+        unsigned short i;
+
+        for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
+                priv->lec_arp_tables[i] = NULL;
+        }        
+	spin_lock_init(&priv->lec_arp_lock);
+        init_timer(&priv->lec_arp_timer);
+        priv->lec_arp_timer.expires = jiffies + LEC_ARP_REFRESH_INTERVAL;
+        priv->lec_arp_timer.data = (unsigned long)priv;
+        priv->lec_arp_timer.function = lec_arp_check_expire;
+        add_timer(&priv->lec_arp_timer);
+}
+
+static void
+lec_arp_clear_vccs(struct lec_arp_table *entry)
+{
+        if (entry->vcc) {
+		struct atm_vcc *vcc = entry->vcc;
+		struct lec_vcc_priv *vpriv = LEC_VCC_PRIV(vcc);
+		struct net_device *dev = (struct net_device*) vcc->proto_data;
+
+                vcc->pop = vpriv->old_pop;
+		if (vpriv->xoff)
+			netif_wake_queue(dev);
+		kfree(vpriv);
+		vcc->user_back = NULL;
+                vcc->push = entry->old_push;
+		vcc_release_async(vcc, -EPIPE);
+                vcc = NULL;
+        }
+        if (entry->recv_vcc) {
+                entry->recv_vcc->push = entry->old_recv_push;
+		vcc_release_async(entry->recv_vcc, -EPIPE);
+                entry->recv_vcc = NULL;
+        }        
+}
+
+/*
+ * Insert entry to lec_arp_table
+ * LANE2: Add to the end of the list to satisfy 8.1.13
+ */
+static inline void 
+lec_arp_add(struct lec_priv *priv, struct lec_arp_table *to_add)
+{
+        unsigned short place;
+        struct lec_arp_table *tmp;
+
+        place = HASH(to_add->mac_addr[ETH_ALEN-1]);
+        tmp = priv->lec_arp_tables[place];
+        to_add->next = NULL;
+        if (tmp == NULL)
+                priv->lec_arp_tables[place] = to_add;
+  
+        else {  /* add to the end */
+                while (tmp->next)
+                        tmp = tmp->next;
+                tmp->next = to_add;
+        }
+
+        DPRINTK("LEC_ARP: Added entry:%2.2x %2.2x %2.2x %2.2x %2.2x %2.2x\n",
+                0xff&to_add->mac_addr[0], 0xff&to_add->mac_addr[1],
+                0xff&to_add->mac_addr[2], 0xff&to_add->mac_addr[3],
+                0xff&to_add->mac_addr[4], 0xff&to_add->mac_addr[5]);
+}
+
+/*
+ * Remove entry from lec_arp_table
+ */
+static int 
+lec_arp_remove(struct lec_priv *priv,
+               struct lec_arp_table *to_remove)
+{
+        unsigned short place;
+        struct lec_arp_table *tmp;
+        int remove_vcc=1;
+
+        if (!to_remove) {
+                return -1;
+        }
+        place = HASH(to_remove->mac_addr[ETH_ALEN-1]);
+        tmp = priv->lec_arp_tables[place];
+        if (tmp == to_remove) {
+                priv->lec_arp_tables[place] = tmp->next;
+        } else {
+                while(tmp && tmp->next != to_remove) {
+                        tmp = tmp->next;
+                }
+                if (!tmp) {/* Entry was not found */
+                        return -1;
+                }
+        }
+        tmp->next = to_remove->next;
+        del_timer(&to_remove->timer);
+  
+        /* If this is the only MAC connected to this VCC, also tear down
+           the VCC */
+        if (to_remove->status >= ESI_FLUSH_PENDING) {
+                /*
+                 * ESI_FLUSH_PENDING, ESI_FORWARD_DIRECT
+                 */
+                for(place = 0; place < LEC_ARP_TABLE_SIZE; place++) {
+                        for(tmp = priv->lec_arp_tables[place]; tmp != NULL; tmp = tmp->next) {
+                                if (memcmp(tmp->atm_addr, to_remove->atm_addr,
+                                           ATM_ESA_LEN)==0) {
+                                        remove_vcc=0;
+                                        break;
+                                }
+                        }
+                }
+                if (remove_vcc)
+                        lec_arp_clear_vccs(to_remove);
+        }
+        skb_queue_purge(&to_remove->tx_wait); /* FIXME: good place for this? */
+
+        DPRINTK("LEC_ARP: Removed entry:%2.2x %2.2x %2.2x %2.2x %2.2x %2.2x\n",
+                0xff&to_remove->mac_addr[0], 0xff&to_remove->mac_addr[1],
+                0xff&to_remove->mac_addr[2], 0xff&to_remove->mac_addr[3],
+                0xff&to_remove->mac_addr[4], 0xff&to_remove->mac_addr[5]);
+        return 0;
+}
+
+#if DEBUG_ARP_TABLE
+static char*
+get_status_string(unsigned char st)
+{
+        switch(st) {
+        case ESI_UNKNOWN:
+                return "ESI_UNKNOWN";
+        case ESI_ARP_PENDING:
+                return "ESI_ARP_PENDING";
+        case ESI_VC_PENDING:
+                return "ESI_VC_PENDING";
+        case ESI_FLUSH_PENDING:
+                return "ESI_FLUSH_PENDING";
+        case ESI_FORWARD_DIRECT:
+                return "ESI_FORWARD_DIRECT";
+        default:
+                return "<UNKNOWN>";
+        }
+}
+#endif
+
+static void
+dump_arp_table(struct lec_priv *priv)
+{
+#if DEBUG_ARP_TABLE
+        int i,j, offset;
+        struct lec_arp_table *rulla;
+        char buf[1024];
+        struct lec_arp_table **lec_arp_tables =
+                (struct lec_arp_table **)priv->lec_arp_tables;
+        struct lec_arp_table *lec_arp_empty_ones =
+                (struct lec_arp_table *)priv->lec_arp_empty_ones;
+        struct lec_arp_table *lec_no_forward =
+                (struct lec_arp_table *)priv->lec_no_forward;
+        struct lec_arp_table *mcast_fwds = priv->mcast_fwds;
+
+
+        printk("Dump %p:\n",priv);
+        for (i=0;i<LEC_ARP_TABLE_SIZE;i++) {
+                rulla = lec_arp_tables[i];
+                offset = 0;
+                offset += sprintf(buf,"%d: %p\n",i, rulla);
+                while (rulla) {
+                        offset += sprintf(buf+offset,"Mac:");
+                        for(j=0;j<ETH_ALEN;j++) {
+                                offset+=sprintf(buf+offset,
+                                                "%2.2x ",
+                                                rulla->mac_addr[j]&0xff);
+                        }
+                        offset +=sprintf(buf+offset,"Atm:");
+                        for(j=0;j<ATM_ESA_LEN;j++) {
+                                offset+=sprintf(buf+offset,
+                                                "%2.2x ",
+                                                rulla->atm_addr[j]&0xff);
+                        }      
+                        offset+=sprintf(buf+offset,
+                                        "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ",
+                                        rulla->vcc?rulla->vcc->vpi:0, 
+                                        rulla->vcc?rulla->vcc->vci:0,
+                                        rulla->recv_vcc?rulla->recv_vcc->vpi:0,
+                                        rulla->recv_vcc?rulla->recv_vcc->vci:0,
+                                        rulla->last_used,
+                                        rulla->timestamp, rulla->no_tries);
+                        offset+=sprintf(buf+offset,
+                                        "Flags:%x, Packets_flooded:%x, Status: %s ",
+                                        rulla->flags, rulla->packets_flooded, 
+                                        get_status_string(rulla->status));
+                        offset+=sprintf(buf+offset,"->%p\n",rulla->next);
+                        rulla = rulla->next;
+                }
+                printk("%s",buf);
+        }
+        rulla = lec_no_forward;
+        if (rulla)
+                printk("No forward\n");  
+        while(rulla) {
+                offset=0;
+                offset += sprintf(buf+offset,"Mac:");
+                for(j=0;j<ETH_ALEN;j++) {
+                        offset+=sprintf(buf+offset,"%2.2x ",
+                                        rulla->mac_addr[j]&0xff);
+                }
+                offset +=sprintf(buf+offset,"Atm:");
+                for(j=0;j<ATM_ESA_LEN;j++) {
+                        offset+=sprintf(buf+offset,"%2.2x ",
+                                        rulla->atm_addr[j]&0xff);
+                }      
+                offset+=sprintf(buf+offset,
+                                "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ",
+                                rulla->vcc?rulla->vcc->vpi:0, 
+                                rulla->vcc?rulla->vcc->vci:0, 
+                                rulla->recv_vcc?rulla->recv_vcc->vpi:0,
+                                rulla->recv_vcc?rulla->recv_vcc->vci:0,
+                                rulla->last_used, 
+                                rulla->timestamp, rulla->no_tries);
+                offset+=sprintf(buf+offset,
+                                "Flags:%x, Packets_flooded:%x, Status: %s ",
+                                rulla->flags, rulla->packets_flooded, 
+                                get_status_string(rulla->status));
+                offset+=sprintf(buf+offset,"->%lx\n",(long)rulla->next);
+                rulla = rulla->next;
+                printk("%s",buf);
+        }
+        rulla = lec_arp_empty_ones;
+        if (rulla)
+                printk("Empty ones\n");  
+        while(rulla) {
+                offset=0;
+                offset += sprintf(buf+offset,"Mac:");
+                for(j=0;j<ETH_ALEN;j++) {
+                        offset+=sprintf(buf+offset,"%2.2x ",
+                                        rulla->mac_addr[j]&0xff);
+                }
+                offset +=sprintf(buf+offset,"Atm:");
+                for(j=0;j<ATM_ESA_LEN;j++) {
+                        offset+=sprintf(buf+offset,"%2.2x ",
+                                        rulla->atm_addr[j]&0xff);
+                }      
+                offset+=sprintf(buf+offset,
+                                "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ",
+                                rulla->vcc?rulla->vcc->vpi:0, 
+                                rulla->vcc?rulla->vcc->vci:0, 
+                                rulla->recv_vcc?rulla->recv_vcc->vpi:0,
+                                rulla->recv_vcc?rulla->recv_vcc->vci:0,
+                                rulla->last_used, 
+                                rulla->timestamp, rulla->no_tries);
+                offset+=sprintf(buf+offset,
+                                "Flags:%x, Packets_flooded:%x, Status: %s ",
+                                rulla->flags, rulla->packets_flooded, 
+                                get_status_string(rulla->status));
+                offset+=sprintf(buf+offset,"->%lx\n",(long)rulla->next);
+                rulla = rulla->next;
+                printk("%s",buf);
+        }
+
+        rulla = mcast_fwds;
+        if (rulla)
+                printk("Multicast Forward VCCs\n");  
+        while(rulla) {
+                offset=0;
+                offset += sprintf(buf+offset,"Mac:");
+                for(j=0;j<ETH_ALEN;j++) {
+                        offset+=sprintf(buf+offset,"%2.2x ",
+                                        rulla->mac_addr[j]&0xff);
+                }
+                offset +=sprintf(buf+offset,"Atm:");
+                for(j=0;j<ATM_ESA_LEN;j++) {
+                        offset+=sprintf(buf+offset,"%2.2x ",
+                                        rulla->atm_addr[j]&0xff);
+                }      
+                offset+=sprintf(buf+offset,
+                                "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ",
+                                rulla->vcc?rulla->vcc->vpi:0, 
+                                rulla->vcc?rulla->vcc->vci:0, 
+                                rulla->recv_vcc?rulla->recv_vcc->vpi:0,
+                                rulla->recv_vcc?rulla->recv_vcc->vci:0,
+                                rulla->last_used, 
+                                rulla->timestamp, rulla->no_tries);
+                offset+=sprintf(buf+offset,
+                                "Flags:%x, Packets_flooded:%x, Status: %s ",
+                                rulla->flags, rulla->packets_flooded, 
+                                get_status_string(rulla->status));
+                offset+=sprintf(buf+offset,"->%lx\n",(long)rulla->next);
+                rulla = rulla->next;
+                printk("%s",buf);
+        }
+
+#endif
+}
+
+/*
+ * Destruction of arp-cache
+ */
+static void
+lec_arp_destroy(struct lec_priv *priv)
+{
+	unsigned long flags;
+        struct lec_arp_table *entry, *next;
+        int i;
+
+        del_timer_sync(&priv->lec_arp_timer);
+        
+        /*
+         * Remove all entries
+         */
+
+	spin_lock_irqsave(&priv->lec_arp_lock, flags);
+        for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
+                for(entry = priv->lec_arp_tables[i]; entry != NULL; entry=next) {
+                        next = entry->next;
+                        lec_arp_remove(priv, entry);
+                        kfree(entry);
+                }
+        }
+        entry = priv->lec_arp_empty_ones;
+        while(entry) {
+                next = entry->next;
+                del_timer_sync(&entry->timer);
+                lec_arp_clear_vccs(entry);
+                kfree(entry);
+                entry = next;
+        }
+        priv->lec_arp_empty_ones = NULL;
+        entry = priv->lec_no_forward;
+        while(entry) {
+                next = entry->next;
+                del_timer_sync(&entry->timer);
+                lec_arp_clear_vccs(entry);
+                kfree(entry);
+                entry = next;
+        }
+        priv->lec_no_forward = NULL;
+        entry = priv->mcast_fwds;
+        while(entry) {
+                next = entry->next;
+                /* No timer, LANEv2 7.1.20 and 2.3.5.3 */
+                lec_arp_clear_vccs(entry);
+                kfree(entry);
+                entry = next;
+        }
+        priv->mcast_fwds = NULL;
+        priv->mcast_vcc = NULL;
+        memset(priv->lec_arp_tables, 0, 
+               sizeof(struct lec_arp_table *) * LEC_ARP_TABLE_SIZE);
+	spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+}
+
+
+/* 
+ * Find entry by mac_address
+ */
+static struct lec_arp_table*
+lec_arp_find(struct lec_priv *priv,
+             unsigned char *mac_addr)
+{
+        unsigned short place;
+        struct lec_arp_table *to_return;
+
+        DPRINTK("LEC_ARP: lec_arp_find :%2.2x %2.2x %2.2x %2.2x %2.2x %2.2x\n",
+                mac_addr[0]&0xff, mac_addr[1]&0xff, mac_addr[2]&0xff, 
+                mac_addr[3]&0xff, mac_addr[4]&0xff, mac_addr[5]&0xff);
+        place = HASH(mac_addr[ETH_ALEN-1]);
+  
+        to_return = priv->lec_arp_tables[place];
+        while(to_return) {
+                if (memcmp(mac_addr, to_return->mac_addr, ETH_ALEN) == 0) {
+                        return to_return;
+                }
+                to_return = to_return->next;
+        }
+        return NULL;
+}
+
+static struct lec_arp_table*
+make_entry(struct lec_priv *priv, unsigned char *mac_addr)
+{
+        struct lec_arp_table *to_return;
+
+        to_return = (struct lec_arp_table *) kmalloc(sizeof(struct lec_arp_table),
+						     GFP_ATOMIC);
+        if (!to_return) {
+                printk("LEC: Arp entry kmalloc failed\n");
+                return NULL;
+        }
+        memset(to_return, 0, sizeof(struct lec_arp_table));
+        memcpy(to_return->mac_addr, mac_addr, ETH_ALEN);
+        init_timer(&to_return->timer);
+        to_return->timer.function = lec_arp_expire_arp;
+        to_return->timer.data = (unsigned long) to_return;
+        to_return->last_used = jiffies;
+        to_return->priv = priv;
+        skb_queue_head_init(&to_return->tx_wait);
+        return to_return;
+}
+
+/*
+ *
+ * Arp sent timer expired
+ *
+ */
+static void
+lec_arp_expire_arp(unsigned long data)
+{
+        struct lec_arp_table *entry;
+
+        entry = (struct lec_arp_table *)data;
+
+        DPRINTK("lec_arp_expire_arp\n");
+        if (entry->status == ESI_ARP_PENDING) {
+                if (entry->no_tries <= entry->priv->max_retry_count) {
+                        if (entry->is_rdesc)
+                                send_to_lecd(entry->priv, l_rdesc_arp_xmt, entry->mac_addr, NULL, NULL);
+                        else
+                                send_to_lecd(entry->priv, l_arp_xmt, entry->mac_addr, NULL, NULL);
+                        entry->no_tries++;
+                }
+                mod_timer(&entry->timer, jiffies + (1*HZ));
+        }
+}
+
+/*
+ *
+ * Unknown/unused vcc expire, remove associated entry
+ *
+ */
+static void
+lec_arp_expire_vcc(unsigned long data)
+{
+	unsigned long flags;
+        struct lec_arp_table *to_remove = (struct lec_arp_table*)data;
+        struct lec_priv *priv = (struct lec_priv *)to_remove->priv;
+        struct lec_arp_table *entry = NULL;
+
+        del_timer(&to_remove->timer);
+
+        DPRINTK("LEC_ARP %p %p: lec_arp_expire_vcc vpi:%d vci:%d\n",
+                to_remove, priv, 
+                to_remove->vcc?to_remove->recv_vcc->vpi:0,
+                to_remove->vcc?to_remove->recv_vcc->vci:0);
+        DPRINTK("eo:%p nf:%p\n",priv->lec_arp_empty_ones,priv->lec_no_forward);
+
+	spin_lock_irqsave(&priv->lec_arp_lock, flags);
+        if (to_remove == priv->lec_arp_empty_ones)
+                priv->lec_arp_empty_ones = to_remove->next;
+        else {
+                entry = priv->lec_arp_empty_ones;
+                while (entry && entry->next != to_remove)
+                        entry = entry->next;
+                if (entry)
+                        entry->next = to_remove->next;
+        }
+        if (!entry) {
+                if (to_remove == priv->lec_no_forward) {
+                        priv->lec_no_forward = to_remove->next;
+                } else {
+                        entry = priv->lec_no_forward;
+                        while (entry && entry->next != to_remove)
+                                entry = entry->next;
+                        if (entry)
+                                entry->next = to_remove->next;
+                }
+	}
+	spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+
+        lec_arp_clear_vccs(to_remove);
+        kfree(to_remove);
+}
+
+/*
+ * Expire entries.
+ * 1. Re-set timer
+ * 2. For each entry, delete entries that have aged past the age limit.
+ * 3. For each entry, depending on the status of the entry, perform
+ *    the following maintenance.
+ *    a. If status is ESI_VC_PENDING or ESI_ARP_PENDING then if the
+ *       tick_count is above the max_unknown_frame_time, clear
+ *       the tick_count to zero and clear the packets_flooded counter
+ *       to zero. This supports the packet rate limit per address
+ *       while flooding unknowns.
+ *    b. If the status is ESI_FLUSH_PENDING and the tick_count is greater
+ *       than or equal to the path_switching_delay, change the status
+ *       to ESI_FORWARD_DIRECT. This causes the flush period to end
+ *       regardless of the progress of the flush protocol.
+ */
+static void
+lec_arp_check_expire(unsigned long data)
+{
+	unsigned long flags;
+        struct lec_priv *priv = (struct lec_priv *)data;
+        struct lec_arp_table *entry, *next;
+        unsigned long now;
+        unsigned long time_to_check;
+        int i;
+
+        DPRINTK("lec_arp_check_expire %p\n",priv);
+        DPRINTK("expire: eo:%p nf:%p\n",priv->lec_arp_empty_ones,
+                priv->lec_no_forward);
+	now = jiffies;
+	spin_lock_irqsave(&priv->lec_arp_lock, flags);
+	for(i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
+		for(entry = priv->lec_arp_tables[i]; entry != NULL; ) {
+			if ((entry->flags) & LEC_REMOTE_FLAG && 
+			    priv->topology_change)
+				time_to_check = priv->forward_delay_time;
+			else
+				time_to_check = priv->aging_time;
+
+			DPRINTK("About to expire: %lx - %lx > %lx\n",
+				now,entry->last_used, time_to_check);
+			if( time_after(now, entry->last_used+
+			   time_to_check) && 
+			    !(entry->flags & LEC_PERMANENT_FLAG) &&
+			    !(entry->mac_addr[0] & 0x01) ) { /* LANE2: 7.1.20 */
+				/* Remove entry */
+				DPRINTK("LEC:Entry timed out\n");
+				next = entry->next;      
+				lec_arp_remove(priv, entry);
+				kfree(entry);
+				entry = next;
+			} else {
+				/* Something else */
+				if ((entry->status == ESI_VC_PENDING ||
+				     entry->status == ESI_ARP_PENDING) 
+				    && time_after_eq(now,
+				    entry->timestamp +
+				    priv->max_unknown_frame_time)) {
+					entry->timestamp = jiffies;
+					entry->packets_flooded = 0;
+					if (entry->status == ESI_VC_PENDING)
+						send_to_lecd(priv, l_svc_setup, entry->mac_addr, entry->atm_addr, NULL);
+				}
+				if (entry->status == ESI_FLUSH_PENDING 
+				   &&
+				   time_after_eq(now, entry->timestamp+
+				   priv->path_switching_delay)) {
+					struct sk_buff *skb;
+
+					while ((skb = skb_dequeue(&entry->tx_wait)) != NULL)
+						lec_send(entry->vcc, skb, entry->priv);
+					entry->last_used = jiffies;
+					entry->status = 
+						ESI_FORWARD_DIRECT;
+				}
+				entry = entry->next;
+			}
+		}
+	}
+	spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+
+        mod_timer(&priv->lec_arp_timer, jiffies + LEC_ARP_REFRESH_INTERVAL);
+}
+/*
+ * Try to find vcc where mac_address is attached.
+ * 
+ */
+static struct atm_vcc*
+lec_arp_resolve(struct lec_priv *priv, unsigned char *mac_to_find,
+		int is_rdesc, struct lec_arp_table **ret_entry)
+{
+	unsigned long flags;
+        struct lec_arp_table *entry;
+	struct atm_vcc *found;
+
+        if (mac_to_find[0] & 0x01) {
+                switch (priv->lane_version) {
+                case 1:
+                        return priv->mcast_vcc;
+                        break;
+                case 2:  /* LANE2 wants arp for multicast addresses */
+                        if ( memcmp(mac_to_find, bus_mac, ETH_ALEN) == 0)
+                                return priv->mcast_vcc;
+                        break;
+                default:
+                        break;
+                }
+        }
+
+	spin_lock_irqsave(&priv->lec_arp_lock, flags);
+        entry = lec_arp_find(priv, mac_to_find);
+  
+        if (entry) {
+                if (entry->status == ESI_FORWARD_DIRECT) {
+                        /* Connection Ok */
+                        entry->last_used = jiffies;
+                        *ret_entry = entry;
+                        found = entry->vcc;
+			goto out;
+                }
+                /* Data direct VC not yet set up, check to see if the unknown
+                   frame count is greater than the limit. If the limit has
+                   not been reached, allow the caller to send packet to
+                   BUS. */
+                if (entry->status != ESI_FLUSH_PENDING &&
+                    entry->packets_flooded<priv->maximum_unknown_frame_count) {
+                        entry->packets_flooded++;
+                        DPRINTK("LEC_ARP: Flooding..\n");
+                        found = priv->mcast_vcc;
+			goto out;
+                }
+		/* We got here because entry->status == ESI_FLUSH_PENDING
+		 * or BUS flood limit was reached for an entry which is
+		 * in ESI_ARP_PENDING or ESI_VC_PENDING state.
+		 */
+                *ret_entry = entry;
+                DPRINTK("lec: entry->status %d entry->vcc %p\n", entry->status, entry->vcc);
+                found = NULL;
+        } else {
+                /* No matching entry was found */
+                entry = make_entry(priv, mac_to_find);
+                DPRINTK("LEC_ARP: Making entry\n");
+                if (!entry) {
+                        found = priv->mcast_vcc;
+			goto out;
+                }
+                lec_arp_add(priv, entry);
+                /* We want arp-request(s) to be sent */
+                entry->packets_flooded =1;
+                entry->status = ESI_ARP_PENDING;
+                entry->no_tries = 1;
+                entry->last_used = entry->timestamp = jiffies;
+                entry->is_rdesc = is_rdesc;
+                if (entry->is_rdesc)
+                        send_to_lecd(priv, l_rdesc_arp_xmt, mac_to_find, NULL, NULL);
+                else
+                        send_to_lecd(priv, l_arp_xmt, mac_to_find, NULL, NULL);
+                entry->timer.expires = jiffies + (1*HZ);
+                entry->timer.function = lec_arp_expire_arp;
+                add_timer(&entry->timer);
+                found = priv->mcast_vcc;
+        }
+
+out:
+	spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+	return found;
+}
+
+static int
+lec_addr_delete(struct lec_priv *priv, unsigned char *atm_addr, 
+                unsigned long permanent)
+{
+	unsigned long flags;
+        struct lec_arp_table *entry, *next;
+        int i;
+
+        DPRINTK("lec_addr_delete\n");
+	spin_lock_irqsave(&priv->lec_arp_lock, flags);
+        for(i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
+                for(entry = priv->lec_arp_tables[i]; entry != NULL; entry = next) {
+                        next = entry->next;
+                        if (!memcmp(atm_addr, entry->atm_addr, ATM_ESA_LEN)
+                            && (permanent || 
+                                !(entry->flags & LEC_PERMANENT_FLAG))) {
+				lec_arp_remove(priv, entry);
+                                kfree(entry);
+                        }
+			spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+                        return 0;
+                }
+        }
+	spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+        return -1;
+}
+
+/*
+ * Notifies:  Response to arp_request (atm_addr != NULL) 
+ */
+static void
+lec_arp_update(struct lec_priv *priv, unsigned char *mac_addr,
+               unsigned char *atm_addr, unsigned long remoteflag,
+               unsigned int targetless_le_arp)
+{
+	unsigned long flags;
+        struct lec_arp_table *entry, *tmp;
+        int i;
+
+        DPRINTK("lec:%s", (targetless_le_arp) ? "targetless ": " ");
+        DPRINTK("lec_arp_update mac:%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x\n",
+                mac_addr[0],mac_addr[1],mac_addr[2],mac_addr[3],
+                mac_addr[4],mac_addr[5]);
+
+	spin_lock_irqsave(&priv->lec_arp_lock, flags);
+        entry = lec_arp_find(priv, mac_addr);
+        if (entry == NULL && targetless_le_arp)
+                goto out;   /* LANE2: ignore targetless LE_ARPs for which
+                             * we have no entry in the cache. 7.1.30
+                             */
+        if (priv->lec_arp_empty_ones) {
+                entry = priv->lec_arp_empty_ones;
+                if (!memcmp(entry->atm_addr, atm_addr, ATM_ESA_LEN)) {
+                        priv->lec_arp_empty_ones = entry->next;
+                } else {
+                        while(entry->next && memcmp(entry->next->atm_addr, 
+                                                    atm_addr, ATM_ESA_LEN))
+                                entry = entry->next;
+                        if (entry->next) {
+                                tmp = entry;
+                                entry = entry->next;
+                                tmp->next = entry->next;
+                        } else
+                                entry = NULL;
+                        
+                }
+                if (entry) {
+                        del_timer(&entry->timer);
+                        tmp = lec_arp_find(priv, mac_addr);
+                        if (tmp) {
+                                del_timer(&tmp->timer);
+                                tmp->status = ESI_FORWARD_DIRECT;
+                                memcpy(tmp->atm_addr, atm_addr, ATM_ESA_LEN);
+                                tmp->vcc = entry->vcc;
+                                tmp->old_push = entry->old_push;
+                                tmp->last_used = jiffies;
+                                del_timer(&entry->timer);
+                                kfree(entry);
+                                entry=tmp;
+                        } else {
+                                entry->status = ESI_FORWARD_DIRECT;
+                                memcpy(entry->mac_addr, mac_addr, ETH_ALEN);
+                                entry->last_used = jiffies;
+                                lec_arp_add(priv, entry);
+                        }
+                        if (remoteflag)
+                                entry->flags|=LEC_REMOTE_FLAG;
+                        else
+                                entry->flags&=~LEC_REMOTE_FLAG;
+                        DPRINTK("After update\n");
+                        dump_arp_table(priv);
+                        goto out;
+                }
+        }
+        entry = lec_arp_find(priv, mac_addr);
+        if (!entry) {
+                entry = make_entry(priv, mac_addr);
+                if (!entry)
+			goto out;
+                entry->status = ESI_UNKNOWN;
+                lec_arp_add(priv, entry);
+                /* Temporary, changes before end of function */
+        }
+        memcpy(entry->atm_addr, atm_addr, ATM_ESA_LEN);
+        del_timer(&entry->timer);
+        for(i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
+                for(tmp = priv->lec_arp_tables[i]; tmp; tmp=tmp->next) {
+                        if (entry != tmp &&
+                            !memcmp(tmp->atm_addr, atm_addr,
+                                    ATM_ESA_LEN)) { 
+                                /* Vcc to this host exists */
+                                if (tmp->status > ESI_VC_PENDING) {
+                                        /*
+                                         * ESI_FLUSH_PENDING,
+                                         * ESI_FORWARD_DIRECT
+                                         */
+                                        entry->vcc = tmp->vcc;
+                                        entry->old_push=tmp->old_push;
+                                }
+                                entry->status=tmp->status;
+                                break;
+                        }
+                }
+        }
+        if (remoteflag)
+                entry->flags|=LEC_REMOTE_FLAG;
+        else
+                entry->flags&=~LEC_REMOTE_FLAG;
+        if (entry->status == ESI_ARP_PENDING ||
+            entry->status == ESI_UNKNOWN) {
+                entry->status = ESI_VC_PENDING;
+                send_to_lecd(priv, l_svc_setup, entry->mac_addr, atm_addr, NULL);
+        }
+        DPRINTK("After update2\n");
+        dump_arp_table(priv);
+out:
+	spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+}
+
+/*
+ * Notifies: Vcc setup ready 
+ */
+static void
+lec_vcc_added(struct lec_priv *priv, struct atmlec_ioc *ioc_data,
+              struct atm_vcc *vcc,
+              void (*old_push)(struct atm_vcc *vcc, struct sk_buff *skb))
+{
+	unsigned long flags;
+        struct lec_arp_table *entry;
+        int i, found_entry=0;
+
+	spin_lock_irqsave(&priv->lec_arp_lock, flags);
+        if (ioc_data->receive == 2) {
+                /* Vcc for Multicast Forward. No timer, LANEv2 7.1.20 and 2.3.5.3 */
+
+                DPRINTK("LEC_ARP: Attaching mcast forward\n");
+#if 0
+                entry = lec_arp_find(priv, bus_mac);
+                if (!entry) {
+                        printk("LEC_ARP: Multicast entry not found!\n");
+			goto out;
+                }
+                memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN);
+                entry->recv_vcc = vcc;
+                entry->old_recv_push = old_push;
+#endif
+                entry = make_entry(priv, bus_mac);
+                if (entry == NULL)
+			goto out;
+                del_timer(&entry->timer);
+                memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN);
+                entry->recv_vcc = vcc;
+                entry->old_recv_push = old_push;
+                entry->next = priv->mcast_fwds;
+                priv->mcast_fwds = entry;
+                goto out;
+        } else if (ioc_data->receive == 1) {
+                /* Vcc which we don't want to make default vcc, attach it
+                   anyway. */
+                DPRINTK("LEC_ARP:Attaching data direct, not default :%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x\n",
+                        ioc_data->atm_addr[0],ioc_data->atm_addr[1],
+                        ioc_data->atm_addr[2],ioc_data->atm_addr[3],
+                        ioc_data->atm_addr[4],ioc_data->atm_addr[5],
+                        ioc_data->atm_addr[6],ioc_data->atm_addr[7],
+                        ioc_data->atm_addr[8],ioc_data->atm_addr[9],
+                        ioc_data->atm_addr[10],ioc_data->atm_addr[11],
+                        ioc_data->atm_addr[12],ioc_data->atm_addr[13],
+                        ioc_data->atm_addr[14],ioc_data->atm_addr[15],
+                        ioc_data->atm_addr[16],ioc_data->atm_addr[17],
+                        ioc_data->atm_addr[18],ioc_data->atm_addr[19]);
+                entry = make_entry(priv, bus_mac);
+                if (entry == NULL)
+			goto out;
+                memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN);
+                memset(entry->mac_addr, 0, ETH_ALEN);
+                entry->recv_vcc = vcc;
+                entry->old_recv_push = old_push;
+                entry->status = ESI_UNKNOWN;
+                entry->timer.expires = jiffies + priv->vcc_timeout_period;
+                entry->timer.function = lec_arp_expire_vcc;
+                add_timer(&entry->timer);
+                entry->next = priv->lec_no_forward;
+                priv->lec_no_forward = entry;
+		dump_arp_table(priv);
+		goto out;
+        }
+        DPRINTK("LEC_ARP:Attaching data direct, default:%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x\n",
+                ioc_data->atm_addr[0],ioc_data->atm_addr[1],
+                ioc_data->atm_addr[2],ioc_data->atm_addr[3],
+                ioc_data->atm_addr[4],ioc_data->atm_addr[5],
+                ioc_data->atm_addr[6],ioc_data->atm_addr[7],
+                ioc_data->atm_addr[8],ioc_data->atm_addr[9],
+                ioc_data->atm_addr[10],ioc_data->atm_addr[11],
+                ioc_data->atm_addr[12],ioc_data->atm_addr[13],
+                ioc_data->atm_addr[14],ioc_data->atm_addr[15],
+                ioc_data->atm_addr[16],ioc_data->atm_addr[17],
+                ioc_data->atm_addr[18],ioc_data->atm_addr[19]);
+        for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
+                for (entry = priv->lec_arp_tables[i]; entry; entry=entry->next) {
+                        if (memcmp(ioc_data->atm_addr, entry->atm_addr, 
+                                   ATM_ESA_LEN)==0) {
+                                DPRINTK("LEC_ARP: Attaching data direct\n");
+                                DPRINTK("Currently -> Vcc: %d, Rvcc:%d\n",
+                                        entry->vcc?entry->vcc->vci:0,
+                                        entry->recv_vcc?entry->recv_vcc->vci:0);
+                                found_entry=1;
+                                del_timer(&entry->timer);
+                                entry->vcc = vcc;
+                                entry->old_push = old_push;
+                                if (entry->status == ESI_VC_PENDING) {
+                                        if(priv->maximum_unknown_frame_count
+                                           ==0)
+                                                entry->status = 
+                                                        ESI_FORWARD_DIRECT;
+                                        else {
+                                                entry->timestamp = jiffies;
+                                                entry->status = 
+                                                        ESI_FLUSH_PENDING;
+#if 0
+                                                send_to_lecd(priv,l_flush_xmt,
+                                                             NULL,
+                                                             entry->atm_addr,
+                                                             NULL);
+#endif
+                                        }
+                                } else {
+                                        /* They were forming a connection
+                                           to us, and we to them. Our
+                                           ATM address is numerically lower
+                                           than theirs, so we make connection
+                                           we formed into default VCC (8.1.11).
+                                           Connection they made gets torn
+                                           down. This might confuse some
+                                           clients. Can be changed if
+                                           someone reports trouble... */
+                                        ;
+                                }
+                        }
+                }
+        }
+        if (found_entry) {
+                DPRINTK("After vcc was added\n");
+                dump_arp_table(priv);
+		goto out;
+        }
+        /* Not found, snatch address from first data packet that arrives from
+           this vcc */
+        entry = make_entry(priv, bus_mac);
+        if (!entry)
+		goto out;
+        entry->vcc = vcc;
+        entry->old_push = old_push;
+        memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN);
+        memset(entry->mac_addr, 0, ETH_ALEN);
+        entry->status = ESI_UNKNOWN;
+        entry->next = priv->lec_arp_empty_ones;
+        priv->lec_arp_empty_ones = entry;
+        entry->timer.expires = jiffies + priv->vcc_timeout_period;
+        entry->timer.function = lec_arp_expire_vcc;
+        add_timer(&entry->timer);
+        DPRINTK("After vcc was added\n");
+	dump_arp_table(priv);
+out:
+	spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+}
+
+static void
+lec_flush_complete(struct lec_priv *priv, unsigned long tran_id)
+{
+	unsigned long flags;
+        struct lec_arp_table *entry;
+        int i;
+  
+        DPRINTK("LEC:lec_flush_complete %lx\n",tran_id);
+	spin_lock_irqsave(&priv->lec_arp_lock, flags);
+        for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
+                for (entry = priv->lec_arp_tables[i]; entry; entry=entry->next) {
+                        if (entry->flush_tran_id == tran_id &&
+                            entry->status == ESI_FLUSH_PENDING) {
+			        struct sk_buff *skb;
+
+ 				while ((skb = skb_dequeue(&entry->tx_wait)) != NULL)
+					lec_send(entry->vcc, skb, entry->priv);
+                                entry->status = ESI_FORWARD_DIRECT;
+                                DPRINTK("LEC_ARP: Flushed\n");
+                        }
+                }
+        }
+	spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+        dump_arp_table(priv);
+}
+
+static void
+lec_set_flush_tran_id(struct lec_priv *priv,
+                      unsigned char *atm_addr, unsigned long tran_id)
+{
+	unsigned long flags;
+        struct lec_arp_table *entry;
+        int i;
+
+	spin_lock_irqsave(&priv->lec_arp_lock, flags);
+        for (i = 0; i < LEC_ARP_TABLE_SIZE; i++)
+                for(entry = priv->lec_arp_tables[i]; entry; entry=entry->next)
+                        if (!memcmp(atm_addr, entry->atm_addr, ATM_ESA_LEN)) {
+                                entry->flush_tran_id = tran_id;
+                                DPRINTK("Set flush transaction id to %lx for %p\n",tran_id,entry);
+                        }
+	spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+}
+
+static int 
+lec_mcast_make(struct lec_priv *priv, struct atm_vcc *vcc)
+{
+	unsigned long flags;
+        unsigned char mac_addr[] = {
+                0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
+        struct lec_arp_table *to_add;
+	struct lec_vcc_priv *vpriv;
+	int err = 0;
+  
+	if (!(vpriv = kmalloc(sizeof(struct lec_vcc_priv), GFP_KERNEL)))
+		return -ENOMEM;
+	vpriv->xoff = 0;
+	vpriv->old_pop = vcc->pop;
+	vcc->user_back = vpriv;
+        vcc->pop = lec_pop;
+	spin_lock_irqsave(&priv->lec_arp_lock, flags);
+        to_add = make_entry(priv, mac_addr);
+        if (!to_add) {
+		vcc->pop = vpriv->old_pop;
+		kfree(vpriv);
+                err = -ENOMEM;
+		goto out;
+        }
+        memcpy(to_add->atm_addr, vcc->remote.sas_addr.prv, ATM_ESA_LEN);
+        to_add->status = ESI_FORWARD_DIRECT;
+        to_add->flags |= LEC_PERMANENT_FLAG;
+        to_add->vcc = vcc;
+        to_add->old_push = vcc->push;
+        vcc->push = lec_push;
+        priv->mcast_vcc = vcc;
+        lec_arp_add(priv, to_add);
+out:
+	spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+        return err;
+}
+
+static void
+lec_vcc_close(struct lec_priv *priv, struct atm_vcc *vcc)
+{
+	unsigned long flags;
+        struct lec_arp_table *entry, *next;
+        int i;
+
+        DPRINTK("LEC_ARP: lec_vcc_close vpi:%d vci:%d\n",vcc->vpi,vcc->vci);
+        dump_arp_table(priv);
+	spin_lock_irqsave(&priv->lec_arp_lock, flags);
+        for(i=0;i<LEC_ARP_TABLE_SIZE;i++) {
+                for(entry = priv->lec_arp_tables[i];entry; entry=next) {
+                        next = entry->next;
+                        if (vcc == entry->vcc) {
+                                lec_arp_remove(priv, entry);
+                                kfree(entry);
+                                if (priv->mcast_vcc == vcc) {
+                                        priv->mcast_vcc = NULL;
+                                }
+                        }
+                }
+        }
+
+        entry = priv->lec_arp_empty_ones;
+        priv->lec_arp_empty_ones = NULL;
+        while (entry != NULL) {
+                next = entry->next;
+                if (entry->vcc == vcc) { /* leave it out from the list */
+                        lec_arp_clear_vccs(entry);
+                        del_timer(&entry->timer);
+                        kfree(entry);
+                }
+                else {              /* put it back to the list */
+                        entry->next = priv->lec_arp_empty_ones;
+                        priv->lec_arp_empty_ones = entry;
+                }
+                entry = next;
+        }
+        
+        entry = priv->lec_no_forward;
+        priv->lec_no_forward = NULL;
+        while (entry != NULL) {
+                next = entry->next;
+                if (entry->recv_vcc == vcc) {
+                        lec_arp_clear_vccs(entry);
+                        del_timer(&entry->timer);
+                        kfree(entry);
+                }
+                else {
+                        entry->next = priv->lec_no_forward;
+                        priv->lec_no_forward = entry;
+                }
+                entry = next;
+        }
+
+        entry = priv->mcast_fwds;
+        priv->mcast_fwds = NULL;
+        while (entry != NULL) {
+                next = entry->next;
+                if (entry->recv_vcc == vcc) {
+                        lec_arp_clear_vccs(entry);
+                        /* No timer, LANEv2 7.1.20 and 2.3.5.3 */
+                        kfree(entry);
+                }
+                else {
+                        entry->next = priv->mcast_fwds;
+                        priv->mcast_fwds = entry;
+                }
+                entry = next;
+        }
+
+	spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+	dump_arp_table(priv);
+}
+
+static void
+lec_arp_check_empties(struct lec_priv *priv,
+                      struct atm_vcc *vcc, struct sk_buff *skb)
+{
+        unsigned long flags;
+        struct lec_arp_table *entry, *prev;
+        struct lecdatahdr_8023 *hdr = (struct lecdatahdr_8023 *)skb->data;
+        unsigned char *src;
+#ifdef CONFIG_TR
+        struct lecdatahdr_8025 *tr_hdr = (struct lecdatahdr_8025 *)skb->data;
+
+        if (priv->is_trdev) src = tr_hdr->h_source;
+        else
+#endif
+        src = hdr->h_source;
+
+	spin_lock_irqsave(&priv->lec_arp_lock, flags);
+        entry = priv->lec_arp_empty_ones;
+        if (vcc == entry->vcc) {
+                del_timer(&entry->timer);
+                memcpy(entry->mac_addr, src, ETH_ALEN);
+                entry->status = ESI_FORWARD_DIRECT;
+                entry->last_used = jiffies;
+                priv->lec_arp_empty_ones = entry->next;
+                /* We might have got an entry */
+                if ((prev = lec_arp_find(priv,src))) {
+                        lec_arp_remove(priv, prev);
+                        kfree(prev);
+                }
+                lec_arp_add(priv, entry);
+		goto out;
+        }
+        prev = entry;
+        entry = entry->next;
+        while (entry && entry->vcc != vcc) {
+                prev= entry;
+                entry = entry->next;
+        }
+        if (!entry) {
+                DPRINTK("LEC_ARP: Arp_check_empties: entry not found!\n");
+		goto out;
+        }
+        del_timer(&entry->timer);
+        memcpy(entry->mac_addr, src, ETH_ALEN);
+        entry->status = ESI_FORWARD_DIRECT;
+        entry->last_used = jiffies;
+        prev->next = entry->next;
+        if ((prev = lec_arp_find(priv, src))) {
+                lec_arp_remove(priv, prev);
+                kfree(prev);
+        }
+        lec_arp_add(priv, entry);
+out:
+	spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
+}
+MODULE_LICENSE("GPL");
diff --git a/net/atm/lec.h b/net/atm/lec.h
new file mode 100644
index 000000000000..6606082b29a8
--- /dev/null
+++ b/net/atm/lec.h
@@ -0,0 +1,142 @@
+/*
+ *
+ * Lan Emulation client header file
+ *
+ * Marko Kiiskila mkiiskila@yahoo.com
+ *
+ */
+
+#ifndef _LEC_H_
+#define _LEC_H_
+
+#include <linux/config.h>
+#include <linux/atmdev.h>
+#include <linux/netdevice.h>
+#include <linux/atmlec.h>
+
+#define LEC_HEADER_LEN 16
+
+struct lecdatahdr_8023 {
+  unsigned short le_header;
+  unsigned char h_dest[ETH_ALEN];
+  unsigned char h_source[ETH_ALEN];
+  unsigned short h_type;
+};
+
+struct lecdatahdr_8025 {
+  unsigned short le_header;
+  unsigned char ac_pad;
+  unsigned char fc;
+  unsigned char h_dest[ETH_ALEN];
+  unsigned char h_source[ETH_ALEN];
+};
+
+#define LEC_MINIMUM_8023_SIZE   62
+#define LEC_MINIMUM_8025_SIZE   16
+
+/*
+ * Operations that LANE2 capable device can do. Two first functions
+ * are used to make the device do things. See spec 3.1.3 and 3.1.4.
+ *
+ * The third function is intented for the MPOA component sitting on
+ * top of the LANE device. The MPOA component assigns it's own function
+ * to (*associate_indicator)() and the LANE device will use that
+ * function to tell about TLVs it sees floating through.
+ *
+ */
+struct lane2_ops {
+	int  (*resolve)(struct net_device *dev, u8 *dst_mac, int force,
+                        u8 **tlvs, u32 *sizeoftlvs);
+        int  (*associate_req)(struct net_device *dev, u8 *lan_dst,
+                              u8 *tlvs, u32 sizeoftlvs);
+	void (*associate_indicator)(struct net_device *dev, u8 *mac_addr,
+                                    u8 *tlvs, u32 sizeoftlvs);
+};
+
+/*
+ * ATM LAN Emulation supports both LLC & Dix Ethernet EtherType
+ * frames. 
+ * 1. Dix Ethernet EtherType frames encoded by placing EtherType
+ *    field in h_type field. Data follows immediatelly after header.
+ * 2. LLC Data frames whose total length, including LLC field and data,
+ *    but not padding required to meet the minimum data frame length, 
+ *    is less than 1536(0x0600) MUST be encoded by placing that length
+ *    in the h_type field. The LLC field follows header immediatelly.
+ * 3. LLC data frames longer than this maximum MUST be encoded by placing
+ *    the value 0 in the h_type field.
+ *
+ */
+
+/* Hash table size */
+#define LEC_ARP_TABLE_SIZE 16
+
+struct lec_priv {
+        struct net_device_stats stats;
+        unsigned short lecid;      /* Lecid of this client */
+        struct lec_arp_table *lec_arp_empty_ones;
+        /* Used for storing VCC's that don't have a MAC address attached yet */
+        struct lec_arp_table *lec_arp_tables[LEC_ARP_TABLE_SIZE];
+        /* Actual LE ARP table */
+        struct lec_arp_table *lec_no_forward;
+        /* Used for storing VCC's (and forward packets from) which are to
+           age out by not using them to forward packets. 
+           This is because to some LE clients there will be 2 VCCs. Only
+           one of them gets used. */
+        struct lec_arp_table *mcast_fwds;
+        /* With LANEv2 it is possible that BUS (or a special multicast server)
+           establishes multiple Multicast Forward VCCs to us. This list
+           collects all those VCCs. LANEv1 client has only one item in this
+           list. These entries are not aged out. */
+        spinlock_t lec_arp_lock;
+        struct atm_vcc *mcast_vcc; /* Default Multicast Send VCC */
+        struct atm_vcc *lecd;
+        struct timer_list lec_arp_timer;
+        /* C10 */
+        unsigned int maximum_unknown_frame_count;
+/* Within the period of time defined by this variable, the client will send 
+   no more than C10 frames to BUS for a given unicast destination. (C11) */
+        unsigned long max_unknown_frame_time;
+/* If no traffic has been sent in this vcc for this period of time,
+   vcc will be torn down (C12)*/
+        unsigned long vcc_timeout_period;
+/* An LE Client MUST not retry an LE_ARP_REQUEST for a 
+   given frame's LAN Destination more than maximum retry count times,
+   after the first LEC_ARP_REQUEST (C13)*/
+        unsigned short max_retry_count;
+/* Max time the client will maintain an entry in its arp cache in
+   absence of a verification of that relationship (C17)*/
+        unsigned long aging_time;
+/* Max time the client will maintain an entry in cache when
+   topology change flag is true (C18) */
+        unsigned long forward_delay_time;
+/* Topology change flag  (C19)*/
+        int topology_change;
+/* Max time the client expects an LE_ARP_REQUEST/LE_ARP_RESPONSE
+   cycle to take (C20)*/
+        unsigned long arp_response_time;
+/* Time limit ot wait to receive an LE_FLUSH_RESPONSE after the
+   LE_FLUSH_REQUEST has been sent before taking recover action. (C21)*/
+        unsigned long flush_timeout;
+/* The time since sending a frame to the bus after which the
+   LE Client may assume that the frame has been either discarded or
+   delivered to the recipient (C22) */
+        unsigned long path_switching_delay;
+
+        u8 *tlvs;          /* LANE2: TLVs are new                */
+        u32 sizeoftlvs;    /* The size of the tlv array in bytes */
+        int lane_version;  /* LANE2                              */
+	int itfnum;        /* e.g. 2 for lec2, 5 for lec5        */
+        struct lane2_ops *lane2_ops; /* can be NULL for LANE v1  */
+        int is_proxy;      /* bridge between ATM and Ethernet    */
+        int is_trdev;      /* Device type, 0 = Ethernet, 1 = TokenRing */
+};
+
+struct lec_vcc_priv {
+	void (*old_pop)(struct atm_vcc *vcc, struct sk_buff *skb);
+	int xoff;
+};
+
+#define LEC_VCC_PRIV(vcc)	((struct lec_vcc_priv *)((vcc)->user_back))
+
+#endif /* _LEC_H_ */
+
diff --git a/net/atm/lec_arpc.h b/net/atm/lec_arpc.h
new file mode 100644
index 000000000000..397448094648
--- /dev/null
+++ b/net/atm/lec_arpc.h
@@ -0,0 +1,92 @@
+/*
+ * Lec arp cache
+ * Marko Kiiskila mkiiskila@yahoo.com
+ *
+ */
+#ifndef _LEC_ARP_H
+#define _LEC_ARP_H
+#include <linux/atm.h>
+#include <linux/atmdev.h>
+#include <linux/if_ether.h>
+#include <linux/atmlec.h>
+
+struct lec_arp_table {
+        struct lec_arp_table *next;          /* Linked entry list */
+        unsigned char atm_addr[ATM_ESA_LEN]; /* Atm address */
+        unsigned char mac_addr[ETH_ALEN];    /* Mac address */
+        int is_rdesc;                        /* Mac address is a route descriptor */
+        struct atm_vcc *vcc;                 /* Vcc this entry is attached */
+        struct atm_vcc *recv_vcc;            /* Vcc we receive data from */
+        void (*old_push)(struct atm_vcc *vcc,struct sk_buff *skb); 
+                                             /* Push that leads to daemon */
+        void (*old_recv_push)(struct atm_vcc *vcc, struct sk_buff *skb);
+                                             /* Push that leads to daemon */
+        void (*old_close)(struct atm_vcc *vcc);
+                                             /* We want to see when this
+                                              * vcc gets closed */
+        unsigned long last_used;             /* For expiry */
+        unsigned long timestamp;             /* Used for various timestamping
+                                              * things:
+                                              * 1. FLUSH started 
+                                              *    (status=ESI_FLUSH_PENDING)
+                                              * 2. Counting to 
+                                              *    max_unknown_frame_time
+                                              *    (status=ESI_ARP_PENDING||
+                                              *     status=ESI_VC_PENDING)
+                                              */
+        unsigned char no_tries;              /* No of times arp retry has been 
+                                                tried */
+        unsigned char status;                /* Status of this entry */
+        unsigned short flags;                /* Flags for this entry */
+        unsigned short packets_flooded;      /* Data packets flooded */
+        unsigned long flush_tran_id;         /* Transaction id in flush protocol */
+        struct timer_list timer;             /* Arping timer */
+        struct lec_priv *priv;               /* Pointer back */
+
+        u8  *tlvs;             /* LANE2: Each MAC address can have TLVs    */
+        u32 sizeoftlvs;        /* associated with it. sizeoftlvs tells the */
+                               /* the length of the tlvs array             */
+        struct sk_buff_head tx_wait; /* wait queue for outgoing packets    */
+};
+
+struct tlv {                   /* LANE2: Template tlv struct for accessing */
+                               /* the tlvs in the lec_arp_table->tlvs array*/
+        u32 type;
+        u8  length;
+        u8  value[255];
+};
+
+/* Status fields */
+#define ESI_UNKNOWN 0       /*
+                             * Next packet sent to this mac address
+                             * causes ARP-request to be sent 
+                             */
+#define ESI_ARP_PENDING 1   /*
+                             * There is no ATM address associated with this
+                             * 48-bit address.  The LE-ARP protocol is in
+                             * progress.
+                             */
+#define ESI_VC_PENDING 2    /*
+                             * There is a valid ATM address associated with 
+                             * this 48-bit address but there is no VC set 
+                             * up to that ATM address.  The signaling 
+                             * protocol is in process.
+                             */
+#define ESI_FLUSH_PENDING 4 /*
+                             * The LEC has been notified of the FLUSH_START
+                             * status and it is assumed that the flush 
+                             * protocol is in process.
+                             */
+#define ESI_FORWARD_DIRECT 5 /*
+                              * Either the Path Switching Delay (C22) has 
+                              * elapsed or the LEC has notified the Mapping 
+                              * that the flush protocol has completed.  In 
+                              * either case, it is safe to forward packets 
+                              * to this address via the data direct VC.
+                              */
+
+/* Flag values */
+#define LEC_REMOTE_FLAG      0x0001
+#define LEC_PERMANENT_FLAG   0x0002
+
+#endif
diff --git a/net/atm/mpc.c b/net/atm/mpc.c
new file mode 100644
index 000000000000..17a81ebe7e6e
--- /dev/null
+++ b/net/atm/mpc.c
@@ -0,0 +1,1514 @@
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/init.h>
+#include <linux/bitops.h>
+#include <linux/seq_file.h>
+
+/* We are an ethernet device */
+#include <linux/if_ether.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <net/sock.h>
+#include <linux/skbuff.h>
+#include <linux/ip.h>
+#include <asm/byteorder.h>
+#include <asm/uaccess.h>
+#include <net/checksum.h>   /* for ip_fast_csum() */
+#include <net/arp.h>
+#include <net/dst.h>
+#include <linux/proc_fs.h>
+
+/* And atm device */
+#include <linux/atmdev.h>
+#include <linux/atmlec.h>
+#include <linux/atmmpc.h>
+/* Modular too */
+#include <linux/config.h>
+#include <linux/module.h>
+
+#include "lec.h"
+#include "mpc.h"
+#include "resources.h"
+
+/*
+ * mpc.c: Implementation of MPOA client kernel part 
+ */
+
+#if 0
+#define dprintk printk   /* debug */
+#else
+#define dprintk(format,args...)
+#endif
+
+#if 0
+#define ddprintk printk  /* more debug */
+#else
+#define ddprintk(format,args...)
+#endif
+
+
+
+#define MPOA_TAG_LEN 4
+
+/* mpc_daemon -> kernel */
+static void MPOA_trigger_rcvd (struct k_message *msg, struct mpoa_client *mpc);
+static void MPOA_res_reply_rcvd(struct k_message *msg, struct mpoa_client *mpc);
+static void ingress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc);
+static void egress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc);
+static void mps_death(struct k_message *msg, struct mpoa_client *mpc);
+static void clean_up(struct k_message *msg, struct mpoa_client *mpc, int action);
+static void MPOA_cache_impos_rcvd(struct k_message *msg, struct mpoa_client *mpc);
+static void set_mpc_ctrl_addr_rcvd(struct k_message *mesg, struct mpoa_client *mpc);
+static void set_mps_mac_addr_rcvd(struct k_message *mesg, struct mpoa_client *mpc);
+
+static uint8_t *copy_macs(struct mpoa_client *mpc, uint8_t *router_mac,
+			  uint8_t *tlvs, uint8_t mps_macs, uint8_t device_type);
+static void purge_egress_shortcut(struct atm_vcc *vcc, eg_cache_entry *entry);
+
+static void send_set_mps_ctrl_addr(char *addr, struct mpoa_client *mpc);
+static void mpoad_close(struct atm_vcc *vcc);
+static int msg_from_mpoad(struct atm_vcc *vcc, struct sk_buff *skb);
+
+static void mpc_push(struct atm_vcc *vcc, struct sk_buff *skb);
+static int mpc_send_packet(struct sk_buff *skb, struct net_device *dev);
+static int mpoa_event_listener(struct notifier_block *mpoa_notifier, unsigned long event, void *dev);
+static void mpc_timer_refresh(void);
+static void mpc_cache_check( unsigned long checking_time  );
+
+static struct llc_snap_hdr llc_snap_mpoa_ctrl = {
+	0xaa, 0xaa, 0x03,
+	{0x00, 0x00, 0x5e},
+	{0x00, 0x03}         /* For MPOA control PDUs */
+};        
+static struct llc_snap_hdr llc_snap_mpoa_data = {
+	0xaa, 0xaa, 0x03,
+	{0x00, 0x00, 0x00},
+	{0x08, 0x00}         /* This is for IP PDUs only */
+};        
+static struct llc_snap_hdr llc_snap_mpoa_data_tagged = {
+	0xaa, 0xaa, 0x03,
+	{0x00, 0x00, 0x00},
+	{0x88, 0x4c}         /* This is for tagged data PDUs */
+};        
+
+static struct notifier_block mpoa_notifier = {
+	mpoa_event_listener,
+	NULL,
+	0
+};
+
+#ifdef CONFIG_PROC_FS
+extern int mpc_proc_init(void);
+extern void mpc_proc_clean(void);
+#endif
+
+struct mpoa_client *mpcs = NULL; /* FIXME */
+static struct atm_mpoa_qos *qos_head = NULL;
+static struct timer_list mpc_timer = TIMER_INITIALIZER(NULL, 0, 0);
+
+
+static struct mpoa_client *find_mpc_by_itfnum(int itf)
+{
+	struct mpoa_client *mpc;
+	
+	mpc = mpcs;  /* our global linked list */
+	while (mpc != NULL) {
+		if (mpc->dev_num == itf)
+			return mpc;
+		mpc = mpc->next;    
+	}
+
+	return NULL;   /* not found */
+}
+
+static struct mpoa_client *find_mpc_by_vcc(struct atm_vcc *vcc)
+{
+	struct mpoa_client *mpc;
+	
+	mpc = mpcs;  /* our global linked list */
+	while (mpc != NULL) {
+		if (mpc->mpoad_vcc == vcc)
+			return mpc;
+		mpc = mpc->next;
+	}
+
+	return NULL;   /* not found */
+}
+
+static struct mpoa_client *find_mpc_by_lec(struct net_device *dev)
+{
+	struct mpoa_client *mpc;
+	
+	mpc = mpcs;  /* our global linked list */
+	while (mpc != NULL) {
+		if (mpc->dev == dev)
+			return mpc;
+		mpc = mpc->next;
+	}
+
+	return NULL;   /* not found */
+}
+
+/*
+ * Functions for managing QoS list
+ */
+
+/*
+ * Overwrites the old entry or makes a new one.
+ */
+struct atm_mpoa_qos *atm_mpoa_add_qos(uint32_t dst_ip, struct atm_qos *qos)
+{
+	struct atm_mpoa_qos *entry;
+
+	entry = atm_mpoa_search_qos(dst_ip);
+	if (entry != NULL) {
+		entry->qos = *qos;
+		return entry;
+	}
+
+	entry = kmalloc(sizeof(struct atm_mpoa_qos), GFP_KERNEL);
+	if (entry == NULL) {
+		printk("mpoa: atm_mpoa_add_qos: out of memory\n");
+		return entry;
+	}
+
+	entry->ipaddr = dst_ip;
+	entry->qos = *qos;
+
+	entry->next = qos_head;
+	qos_head = entry;
+
+	return entry;
+}
+
+struct atm_mpoa_qos *atm_mpoa_search_qos(uint32_t dst_ip)
+{
+	struct atm_mpoa_qos *qos;
+
+	qos = qos_head;
+	while( qos != NULL ){
+		if(qos->ipaddr == dst_ip) {
+			break;
+		}
+		qos = qos->next;
+	}
+
+	return qos;
+}        
+
+/*
+ * Returns 0 for failure
+ */
+int atm_mpoa_delete_qos(struct atm_mpoa_qos *entry)
+{
+
+	struct atm_mpoa_qos *curr;
+
+	if (entry == NULL) return 0;
+	if (entry == qos_head) {
+		qos_head = qos_head->next;
+		kfree(entry);
+		return 1;
+	}
+
+	curr = qos_head;
+	while (curr != NULL) {
+		if (curr->next == entry) {
+			curr->next = entry->next;
+			kfree(entry);
+			return 1;
+		}
+		curr = curr->next;
+	}
+
+	return 0;
+}
+
+/* this is buggered - we need locking for qos_head */
+void atm_mpoa_disp_qos(struct seq_file *m)
+{
+	unsigned char *ip;
+	char ipaddr[16];
+	struct atm_mpoa_qos *qos;
+
+	qos = qos_head;
+	seq_printf(m, "QoS entries for shortcuts:\n");
+	seq_printf(m, "IP address\n  TX:max_pcr pcr     min_pcr max_cdv max_sdu\n  RX:max_pcr pcr     min_pcr max_cdv max_sdu\n");
+
+	ipaddr[sizeof(ipaddr)-1] = '\0';
+	while (qos != NULL) {
+		ip = (unsigned char *)&qos->ipaddr;
+		sprintf(ipaddr, "%u.%u.%u.%u", NIPQUAD(ip));
+		seq_printf(m, "%u.%u.%u.%u\n     %-7d %-7d %-7d %-7d %-7d\n     %-7d %-7d %-7d %-7d %-7d\n",
+				NIPQUAD(ipaddr),
+				qos->qos.txtp.max_pcr, qos->qos.txtp.pcr, qos->qos.txtp.min_pcr, qos->qos.txtp.max_cdv, qos->qos.txtp.max_sdu,
+				qos->qos.rxtp.max_pcr, qos->qos.rxtp.pcr, qos->qos.rxtp.min_pcr, qos->qos.rxtp.max_cdv, qos->qos.rxtp.max_sdu);
+		qos = qos->next;
+	}
+}
+
+static struct net_device *find_lec_by_itfnum(int itf)
+{
+	struct net_device *dev;
+	char name[IFNAMSIZ];
+
+	sprintf(name, "lec%d", itf);
+	dev = dev_get_by_name(name);
+	
+	return dev;
+}
+
+static struct mpoa_client *alloc_mpc(void)
+{
+	struct mpoa_client *mpc;
+
+	mpc = kmalloc(sizeof (struct mpoa_client), GFP_KERNEL);
+	if (mpc == NULL)
+		return NULL;
+	memset(mpc, 0, sizeof(struct mpoa_client));
+	rwlock_init(&mpc->ingress_lock);
+	rwlock_init(&mpc->egress_lock);
+	mpc->next = mpcs;
+	atm_mpoa_init_cache(mpc);
+
+	mpc->parameters.mpc_p1 = MPC_P1;
+	mpc->parameters.mpc_p2 = MPC_P2;
+	memset(mpc->parameters.mpc_p3,0,sizeof(mpc->parameters.mpc_p3));
+	mpc->parameters.mpc_p4 = MPC_P4;
+	mpc->parameters.mpc_p5 = MPC_P5; 
+	mpc->parameters.mpc_p6 = MPC_P6;
+	
+	mpcs = mpc;
+	
+	return mpc;
+}
+
+/*
+ *
+ * start_mpc() puts the MPC on line. All the packets destined
+ * to the lec underneath us are now being monitored and 
+ * shortcuts will be established.
+ *
+ */
+static void start_mpc(struct mpoa_client *mpc, struct net_device *dev)
+{
+	
+	dprintk("mpoa: (%s) start_mpc:\n", mpc->dev->name); 
+	if (dev->hard_start_xmit == NULL) {
+		printk("mpoa: (%s) start_mpc: dev->hard_start_xmit == NULL, not starting\n",
+		       dev->name);
+		return;
+	}
+	mpc->old_hard_start_xmit = dev->hard_start_xmit;
+	dev->hard_start_xmit = mpc_send_packet;
+
+	return;
+}
+
+static void stop_mpc(struct mpoa_client *mpc)
+{
+	
+	dprintk("mpoa: (%s) stop_mpc:", mpc->dev->name); 
+
+	/* Lets not nullify lec device's dev->hard_start_xmit */
+	if (mpc->dev->hard_start_xmit != mpc_send_packet) {
+		dprintk(" mpc already stopped, not fatal\n");
+		return;
+	}
+	dprintk("\n");
+	mpc->dev->hard_start_xmit = mpc->old_hard_start_xmit;
+	mpc->old_hard_start_xmit = NULL;
+	/* close_shortcuts(mpc);    ??? FIXME */
+	
+	return;
+}
+
+static const char *mpoa_device_type_string(char type) __attribute__ ((unused));
+
+static const char *mpoa_device_type_string(char type)
+{
+	switch(type) {
+	case NON_MPOA:
+		return "non-MPOA device";
+		break;
+	case MPS:
+		return "MPS";
+		break;
+	case MPC:
+		return "MPC";
+		break;
+	case MPS_AND_MPC:
+		return "both MPS and MPC";
+		break;
+	default:
+		return "unspecified (non-MPOA) device";
+		break;
+	}
+
+	return ""; /* not reached */
+}
+
+/*
+ * lec device calls this via its dev->priv->lane2_ops->associate_indicator()
+ * when it sees a TLV in LE_ARP packet.
+ * We fill in the pointer above when we see a LANE2 lec initializing
+ * See LANE2 spec 3.1.5
+ *
+ * Quite a big and ugly function but when you look at it
+ * all it does is to try to locate and parse MPOA Device
+ * Type TLV.
+ * We give our lec a pointer to this function and when the
+ * lec sees a TLV it uses the pointer to call this function.
+ *
+ */
+static void lane2_assoc_ind(struct net_device *dev, uint8_t *mac_addr,
+			    uint8_t *tlvs, uint32_t sizeoftlvs)
+{
+	uint32_t type;
+	uint8_t length, mpoa_device_type, number_of_mps_macs;
+	uint8_t *end_of_tlvs;
+	struct mpoa_client *mpc;
+	
+	mpoa_device_type = number_of_mps_macs = 0; /* silence gcc */
+	dprintk("mpoa: (%s) lane2_assoc_ind: received TLV(s), ", dev->name);
+	dprintk("total length of all TLVs %d\n", sizeoftlvs);
+	mpc = find_mpc_by_lec(dev); /* Sampo-Fix: moved here from below */
+	if (mpc == NULL) {
+		printk("mpoa: (%s) lane2_assoc_ind: no mpc\n", dev->name);
+		return;
+	}
+	end_of_tlvs = tlvs + sizeoftlvs;
+	while (end_of_tlvs - tlvs >= 5) {
+		type = (tlvs[0] << 24) | (tlvs[1] << 16) | (tlvs[2] << 8) | tlvs[3];
+		length = tlvs[4];
+		tlvs += 5;
+		dprintk("    type 0x%x length %02x\n", type, length);
+		if (tlvs + length > end_of_tlvs) {
+			printk("TLV value extends past its buffer, aborting parse\n");
+			return;
+		}
+		
+		if (type == 0) {
+			printk("mpoa: (%s) lane2_assoc_ind: TLV type was 0, returning\n", dev->name);
+			return;
+		}
+
+		if (type != TLV_MPOA_DEVICE_TYPE) {
+			tlvs += length;
+			continue;  /* skip other TLVs */
+		}
+		mpoa_device_type = *tlvs++;
+		number_of_mps_macs = *tlvs++;
+		dprintk("mpoa: (%s) MPOA device type '%s', ", dev->name, mpoa_device_type_string(mpoa_device_type));
+		if (mpoa_device_type == MPS_AND_MPC &&
+		    length < (42 + number_of_mps_macs*ETH_ALEN)) { /* :) */
+			printk("\nmpoa: (%s) lane2_assoc_ind: short MPOA Device Type TLV\n",
+			       dev->name);
+			continue;
+		}
+		if ((mpoa_device_type == MPS || mpoa_device_type == MPC)
+		    && length < 22 + number_of_mps_macs*ETH_ALEN) {
+			printk("\nmpoa: (%s) lane2_assoc_ind: short MPOA Device Type TLV\n",
+				dev->name);
+			continue;
+		}
+		if (mpoa_device_type != MPS && mpoa_device_type != MPS_AND_MPC) {
+			dprintk("ignoring non-MPS device\n");
+			if (mpoa_device_type == MPC) tlvs += 20;
+			continue;  /* we are only interested in MPSs */
+		}
+		if (number_of_mps_macs == 0 && mpoa_device_type == MPS_AND_MPC) {
+			printk("\nmpoa: (%s) lane2_assoc_ind: MPS_AND_MPC has zero MACs\n", dev->name);
+			continue;  /* someone should read the spec */
+		}
+		dprintk("this MPS has %d MAC addresses\n", number_of_mps_macs);
+		
+		/* ok, now we can go and tell our daemon the control address of MPS */
+		send_set_mps_ctrl_addr(tlvs, mpc);
+		
+		tlvs = copy_macs(mpc, mac_addr, tlvs, number_of_mps_macs, mpoa_device_type);
+		if (tlvs == NULL) return;
+	}
+	if (end_of_tlvs - tlvs != 0)
+		printk("mpoa: (%s) lane2_assoc_ind: ignoring %Zd bytes of trailing TLV carbage\n",
+		       dev->name, end_of_tlvs - tlvs);
+	return;
+}
+
+/*
+ * Store at least advertizing router's MAC address
+ * plus the possible MAC address(es) to mpc->mps_macs.
+ * For a freshly allocated MPOA client mpc->mps_macs == 0.
+ */
+static uint8_t *copy_macs(struct mpoa_client *mpc, uint8_t *router_mac,
+			  uint8_t *tlvs, uint8_t mps_macs, uint8_t device_type)
+{
+	int num_macs;
+	num_macs = (mps_macs > 1) ? mps_macs : 1;
+
+	if (mpc->number_of_mps_macs != num_macs) { /* need to reallocate? */
+		if (mpc->number_of_mps_macs != 0) kfree(mpc->mps_macs);
+		mpc->number_of_mps_macs = 0;
+		mpc->mps_macs = kmalloc(num_macs*ETH_ALEN, GFP_KERNEL);
+		if (mpc->mps_macs == NULL) {
+			printk("mpoa: (%s) copy_macs: out of mem\n", mpc->dev->name);
+			return NULL;
+		}
+	}
+	memcpy(mpc->mps_macs, router_mac, ETH_ALEN);
+	tlvs += 20; if (device_type == MPS_AND_MPC) tlvs += 20;
+	if (mps_macs > 0)
+		memcpy(mpc->mps_macs, tlvs, mps_macs*ETH_ALEN);
+	tlvs += mps_macs*ETH_ALEN;
+	mpc->number_of_mps_macs = num_macs;
+
+	return tlvs;
+}
+
+static int send_via_shortcut(struct sk_buff *skb, struct mpoa_client *mpc)
+{
+	in_cache_entry *entry;
+	struct iphdr *iph;
+	char *buff;
+	uint32_t ipaddr = 0;
+
+	static struct {
+		struct llc_snap_hdr hdr;
+		uint32_t tag;
+	} tagged_llc_snap_hdr = {
+		{0xaa, 0xaa, 0x03, {0x00, 0x00, 0x00}, {0x88, 0x4c}},
+		0
+	};
+
+	buff = skb->data + mpc->dev->hard_header_len;
+	iph = (struct iphdr *)buff;
+	ipaddr = iph->daddr;
+
+	ddprintk("mpoa: (%s) send_via_shortcut: ipaddr 0x%x\n", mpc->dev->name, ipaddr);        
+
+	entry = mpc->in_ops->get(ipaddr, mpc);
+	if (entry == NULL) {
+		entry = mpc->in_ops->add_entry(ipaddr, mpc);
+		if (entry != NULL) mpc->in_ops->put(entry);
+		return 1;
+	}
+	if (mpc->in_ops->cache_hit(entry, mpc) != OPEN){   /* threshold not exceeded or VCC not ready */
+		ddprintk("mpoa: (%s) send_via_shortcut: cache_hit: returns != OPEN\n", mpc->dev->name);        
+		mpc->in_ops->put(entry);
+		return 1;
+	}
+
+	ddprintk("mpoa: (%s) send_via_shortcut: using shortcut\n", mpc->dev->name);        
+	/* MPOA spec A.1.4, MPOA client must decrement IP ttl at least by one */
+	if (iph->ttl <= 1) {
+		ddprintk("mpoa: (%s) send_via_shortcut: IP ttl = %u, using LANE\n", mpc->dev->name, iph->ttl);        
+		mpc->in_ops->put(entry);
+		return 1;
+	}
+	iph->ttl--;
+	iph->check = 0;
+	iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
+
+	if (entry->ctrl_info.tag != 0) {
+		ddprintk("mpoa: (%s) send_via_shortcut: adding tag 0x%x\n", mpc->dev->name, entry->ctrl_info.tag);
+		tagged_llc_snap_hdr.tag = entry->ctrl_info.tag;
+		skb_pull(skb, ETH_HLEN);                       /* get rid of Eth header */
+		skb_push(skb, sizeof(tagged_llc_snap_hdr));    /* add LLC/SNAP header   */
+		memcpy(skb->data, &tagged_llc_snap_hdr, sizeof(tagged_llc_snap_hdr));
+	} else {
+		skb_pull(skb, ETH_HLEN);                        /* get rid of Eth header */
+		skb_push(skb, sizeof(struct llc_snap_hdr));     /* add LLC/SNAP header + tag  */
+		memcpy(skb->data, &llc_snap_mpoa_data, sizeof(struct llc_snap_hdr));
+	}
+
+	atomic_add(skb->truesize, &sk_atm(entry->shortcut)->sk_wmem_alloc);
+	ATM_SKB(skb)->atm_options = entry->shortcut->atm_options;
+	entry->shortcut->send(entry->shortcut, skb);
+	entry->packets_fwded++;
+	mpc->in_ops->put(entry);
+
+	return 0;
+}
+
+/*
+ * Probably needs some error checks and locking, not sure...
+ */
+static int mpc_send_packet(struct sk_buff *skb, struct net_device *dev)
+{
+	int retval;
+	struct mpoa_client *mpc;
+	struct ethhdr *eth;
+	int i = 0;
+	
+	mpc = find_mpc_by_lec(dev); /* this should NEVER fail */
+	if(mpc == NULL) {
+		printk("mpoa: (%s) mpc_send_packet: no MPC found\n", dev->name);
+		goto non_ip;
+	}
+
+	eth = (struct ethhdr *)skb->data;
+	if (eth->h_proto != htons(ETH_P_IP))
+		goto non_ip; /* Multi-Protocol Over ATM :-) */
+
+	while (i < mpc->number_of_mps_macs) {
+		if (memcmp(eth->h_dest, (mpc->mps_macs + i*ETH_ALEN), ETH_ALEN) == 0)
+			if ( send_via_shortcut(skb, mpc) == 0 )           /* try shortcut */
+				return 0;                                 /* success!     */
+		i++;
+	}
+
+ non_ip:
+	retval = mpc->old_hard_start_xmit(skb,dev);
+	
+	return retval;
+}
+
+static int atm_mpoa_vcc_attach(struct atm_vcc *vcc, void __user *arg)
+{
+	int bytes_left;
+	struct mpoa_client *mpc;
+	struct atmmpc_ioc ioc_data;
+	in_cache_entry *in_entry;
+	uint32_t  ipaddr;
+	unsigned char *ip;
+
+	bytes_left = copy_from_user(&ioc_data, arg, sizeof(struct atmmpc_ioc));
+	if (bytes_left != 0) {
+		printk("mpoa: mpc_vcc_attach: Short read (missed %d bytes) from userland\n", bytes_left);
+		return -EFAULT;
+	}
+	ipaddr = ioc_data.ipaddr;
+	if (ioc_data.dev_num < 0 || ioc_data.dev_num >= MAX_LEC_ITF)
+		return -EINVAL;
+	
+	mpc = find_mpc_by_itfnum(ioc_data.dev_num);
+	if (mpc == NULL)
+		return -EINVAL;
+	
+	if (ioc_data.type == MPC_SOCKET_INGRESS) {
+		in_entry = mpc->in_ops->get(ipaddr, mpc);
+		if (in_entry == NULL || in_entry->entry_state < INGRESS_RESOLVED) {
+			printk("mpoa: (%s) mpc_vcc_attach: did not find RESOLVED entry from ingress cache\n",
+				mpc->dev->name);
+			if (in_entry != NULL) mpc->in_ops->put(in_entry);
+			return -EINVAL;
+		}
+		ip = (unsigned char*)&in_entry->ctrl_info.in_dst_ip;
+		printk("mpoa: (%s) mpc_vcc_attach: attaching ingress SVC, entry = %u.%u.%u.%u\n",
+		       mpc->dev->name, ip[0], ip[1], ip[2], ip[3]);
+		in_entry->shortcut = vcc;
+		mpc->in_ops->put(in_entry);
+	} else {
+		printk("mpoa: (%s) mpc_vcc_attach: attaching egress SVC\n", mpc->dev->name);
+	}
+
+	vcc->proto_data = mpc->dev;
+	vcc->push = mpc_push;
+
+	return 0;
+}
+
+/*
+ *
+ */
+static void mpc_vcc_close(struct atm_vcc *vcc, struct net_device *dev)
+{
+	struct mpoa_client *mpc;
+	in_cache_entry *in_entry;
+	eg_cache_entry *eg_entry;
+	
+	mpc = find_mpc_by_lec(dev);
+	if (mpc == NULL) {
+		printk("mpoa: (%s) mpc_vcc_close: close for unknown MPC\n", dev->name);
+		return;
+	}
+
+	dprintk("mpoa: (%s) mpc_vcc_close:\n", dev->name);
+	in_entry = mpc->in_ops->get_by_vcc(vcc, mpc);
+	if (in_entry) {
+		unsigned char *ip __attribute__ ((unused)) =
+		    (unsigned char *)&in_entry->ctrl_info.in_dst_ip;
+		dprintk("mpoa: (%s) mpc_vcc_close: ingress SVC closed ip = %u.%u.%u.%u\n",
+		       mpc->dev->name, ip[0], ip[1], ip[2], ip[3]);
+		in_entry->shortcut = NULL;
+		mpc->in_ops->put(in_entry);
+	}
+	eg_entry = mpc->eg_ops->get_by_vcc(vcc, mpc);
+	if (eg_entry) {
+		dprintk("mpoa: (%s) mpc_vcc_close: egress SVC closed\n", mpc->dev->name);
+		eg_entry->shortcut = NULL;
+		mpc->eg_ops->put(eg_entry);
+	}
+
+	if (in_entry == NULL && eg_entry == NULL)
+		dprintk("mpoa: (%s) mpc_vcc_close:  unused vcc closed\n", dev->name);
+
+	return;
+}
+
+static void mpc_push(struct atm_vcc *vcc, struct sk_buff *skb)
+{
+	struct net_device *dev = (struct net_device *)vcc->proto_data;
+	struct sk_buff *new_skb;
+	eg_cache_entry *eg;
+	struct mpoa_client *mpc;
+	uint32_t tag;
+	char *tmp;
+	
+	ddprintk("mpoa: (%s) mpc_push:\n", dev->name);
+	if (skb == NULL) {
+		dprintk("mpoa: (%s) mpc_push: null skb, closing VCC\n", dev->name);
+		mpc_vcc_close(vcc, dev);
+		return;
+	}
+	
+	skb->dev = dev;
+	if (memcmp(skb->data, &llc_snap_mpoa_ctrl, sizeof(struct llc_snap_hdr)) == 0) {
+		struct sock *sk = sk_atm(vcc);
+
+		dprintk("mpoa: (%s) mpc_push: control packet arrived\n", dev->name);
+		/* Pass control packets to daemon */
+		skb_queue_tail(&sk->sk_receive_queue, skb);
+		sk->sk_data_ready(sk, skb->len);
+		return;
+	}
+
+	/* data coming over the shortcut */
+	atm_return(vcc, skb->truesize);
+
+	mpc = find_mpc_by_lec(dev);
+	if (mpc == NULL) {
+		printk("mpoa: (%s) mpc_push: unknown MPC\n", dev->name);
+		return;
+	}
+
+	if (memcmp(skb->data, &llc_snap_mpoa_data_tagged, sizeof(struct llc_snap_hdr)) == 0) { /* MPOA tagged data */
+		ddprintk("mpoa: (%s) mpc_push: tagged data packet arrived\n", dev->name);
+
+	} else if (memcmp(skb->data, &llc_snap_mpoa_data, sizeof(struct llc_snap_hdr)) == 0) { /* MPOA data */
+		printk("mpoa: (%s) mpc_push: non-tagged data packet arrived\n", dev->name);
+		printk("           mpc_push: non-tagged data unsupported, purging\n");
+		dev_kfree_skb_any(skb);
+		return;
+	} else {
+		printk("mpoa: (%s) mpc_push: garbage arrived, purging\n", dev->name);
+		dev_kfree_skb_any(skb);
+		return;
+	}
+
+	tmp = skb->data + sizeof(struct llc_snap_hdr);
+	tag = *(uint32_t *)tmp;
+
+	eg = mpc->eg_ops->get_by_tag(tag, mpc);
+	if (eg == NULL) {
+		printk("mpoa: (%s) mpc_push: Didn't find egress cache entry, tag = %u\n",
+		       dev->name,tag);
+		purge_egress_shortcut(vcc, NULL);
+		dev_kfree_skb_any(skb);
+		return;
+	}
+	
+	/*
+	 * See if ingress MPC is using shortcut we opened as a return channel.
+	 * This means we have a bi-directional vcc opened by us.
+	 */ 
+	if (eg->shortcut == NULL) {
+		eg->shortcut = vcc;
+		printk("mpoa: (%s) mpc_push: egress SVC in use\n", dev->name);
+	}
+
+	skb_pull(skb, sizeof(struct llc_snap_hdr) + sizeof(tag)); /* get rid of LLC/SNAP header */
+	new_skb = skb_realloc_headroom(skb, eg->ctrl_info.DH_length); /* LLC/SNAP is shorter than MAC header :( */
+	dev_kfree_skb_any(skb);
+	if (new_skb == NULL){
+		mpc->eg_ops->put(eg);
+		return;
+	}
+	skb_push(new_skb, eg->ctrl_info.DH_length);     /* add MAC header */
+	memcpy(new_skb->data, eg->ctrl_info.DLL_header, eg->ctrl_info.DH_length);
+	new_skb->protocol = eth_type_trans(new_skb, dev);
+	new_skb->nh.raw = new_skb->data;
+
+	eg->latest_ip_addr = new_skb->nh.iph->saddr;
+	eg->packets_rcvd++;
+	mpc->eg_ops->put(eg);
+
+	memset(ATM_SKB(skb), 0, sizeof(struct atm_skb_data));
+	netif_rx(new_skb);
+
+	return;
+}
+
+static struct atmdev_ops mpc_ops = { /* only send is required */
+	.close	= mpoad_close,
+	.send	= msg_from_mpoad
+};
+
+static struct atm_dev mpc_dev = {
+	.ops	= &mpc_ops,
+	.type	= "mpc",
+	.number	= 42,
+	.lock	= SPIN_LOCK_UNLOCKED
+	/* members not explicitly initialised will be 0 */
+};
+
+static int atm_mpoa_mpoad_attach (struct atm_vcc *vcc, int arg)
+{
+	struct mpoa_client *mpc;
+	struct lec_priv *priv;
+	int err;
+	
+	if (mpcs == NULL) {
+		init_timer(&mpc_timer);
+		mpc_timer_refresh();
+
+		/* This lets us now how our LECs are doing */
+		err = register_netdevice_notifier(&mpoa_notifier);
+		if (err < 0) {
+			del_timer(&mpc_timer);
+			return err;
+		}
+	}
+	
+	mpc = find_mpc_by_itfnum(arg);
+	if (mpc == NULL) {
+		dprintk("mpoa: mpoad_attach: allocating new mpc for itf %d\n", arg);
+		mpc = alloc_mpc();
+		if (mpc == NULL)
+			return -ENOMEM;
+		mpc->dev_num = arg;
+		mpc->dev = find_lec_by_itfnum(arg); /* NULL if there was no lec */
+	}
+	if (mpc->mpoad_vcc) {
+		printk("mpoa: mpoad_attach: mpoad is already present for itf %d\n", arg);
+		return -EADDRINUSE;
+	}
+
+	if (mpc->dev) { /* check if the lec is LANE2 capable */
+		priv = (struct lec_priv *)mpc->dev->priv;
+		if (priv->lane_version < 2) {
+			dev_put(mpc->dev);
+			mpc->dev = NULL;
+		} else
+			priv->lane2_ops->associate_indicator = lane2_assoc_ind;  
+	}
+
+	mpc->mpoad_vcc = vcc;
+	vcc->dev = &mpc_dev;
+	vcc_insert_socket(sk_atm(vcc));
+	set_bit(ATM_VF_META,&vcc->flags);
+	set_bit(ATM_VF_READY,&vcc->flags);
+
+	if (mpc->dev) {
+		char empty[ATM_ESA_LEN];
+		memset(empty, 0, ATM_ESA_LEN);
+		
+		start_mpc(mpc, mpc->dev);
+		/* set address if mpcd e.g. gets killed and restarted.
+		 * If we do not do it now we have to wait for the next LE_ARP
+		 */
+		if ( memcmp(mpc->mps_ctrl_addr, empty, ATM_ESA_LEN) != 0 )
+			send_set_mps_ctrl_addr(mpc->mps_ctrl_addr, mpc);
+	}
+
+	__module_get(THIS_MODULE);
+	return arg;
+}
+
+static void send_set_mps_ctrl_addr(char *addr, struct mpoa_client *mpc)
+{
+	struct k_message mesg;
+
+	memcpy (mpc->mps_ctrl_addr, addr, ATM_ESA_LEN);
+	
+	mesg.type = SET_MPS_CTRL_ADDR;
+	memcpy(mesg.MPS_ctrl, addr, ATM_ESA_LEN);
+	msg_to_mpoad(&mesg, mpc);
+
+	return;
+}
+
+static void mpoad_close(struct atm_vcc *vcc)
+{
+	struct mpoa_client *mpc;
+	struct sk_buff *skb;
+
+	mpc = find_mpc_by_vcc(vcc);
+	if (mpc == NULL) {
+		printk("mpoa: mpoad_close: did not find MPC\n");
+		return;
+	}
+	if (!mpc->mpoad_vcc) {
+		printk("mpoa: mpoad_close: close for non-present mpoad\n");
+		return;
+	}
+	
+	mpc->mpoad_vcc = NULL;
+	if (mpc->dev) {
+		struct lec_priv *priv = (struct lec_priv *)mpc->dev->priv;
+		priv->lane2_ops->associate_indicator = NULL;
+		stop_mpc(mpc);
+		dev_put(mpc->dev);
+	}
+
+	mpc->in_ops->destroy_cache(mpc);
+	mpc->eg_ops->destroy_cache(mpc);
+
+	while ((skb = skb_dequeue(&sk_atm(vcc)->sk_receive_queue))) {
+		atm_return(vcc, skb->truesize);
+		kfree_skb(skb);
+	}
+	
+	printk("mpoa: (%s) going down\n",
+		(mpc->dev) ? mpc->dev->name : "<unknown>");
+	module_put(THIS_MODULE);
+
+	return;
+}
+
+/*
+ *
+ */
+static int msg_from_mpoad(struct atm_vcc *vcc, struct sk_buff *skb)
+{
+	
+	struct mpoa_client *mpc = find_mpc_by_vcc(vcc);
+	struct k_message *mesg = (struct k_message*)skb->data;
+	atomic_sub(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc);
+	
+	if (mpc == NULL) {
+		printk("mpoa: msg_from_mpoad: no mpc found\n");
+		return 0;
+	}
+	dprintk("mpoa: (%s) msg_from_mpoad:", (mpc->dev) ? mpc->dev->name : "<unknown>");
+	switch(mesg->type) {
+	case MPOA_RES_REPLY_RCVD:
+		dprintk(" mpoa_res_reply_rcvd\n");
+		MPOA_res_reply_rcvd(mesg, mpc);
+		break;
+	case MPOA_TRIGGER_RCVD:
+		dprintk(" mpoa_trigger_rcvd\n");
+		MPOA_trigger_rcvd(mesg, mpc);
+		break;
+	case INGRESS_PURGE_RCVD:
+		dprintk(" nhrp_purge_rcvd\n");
+		ingress_purge_rcvd(mesg, mpc);
+		break;
+	case EGRESS_PURGE_RCVD:
+		dprintk(" egress_purge_reply_rcvd\n");
+		egress_purge_rcvd(mesg, mpc);
+		break;
+	case MPS_DEATH:
+		dprintk(" mps_death\n");
+		mps_death(mesg, mpc);
+		break;
+	case CACHE_IMPOS_RCVD:
+		dprintk(" cache_impos_rcvd\n");
+		MPOA_cache_impos_rcvd(mesg, mpc);
+		break;
+	case SET_MPC_CTRL_ADDR:
+		dprintk(" set_mpc_ctrl_addr\n");
+		set_mpc_ctrl_addr_rcvd(mesg, mpc);
+		break;
+	case SET_MPS_MAC_ADDR:
+		dprintk(" set_mps_mac_addr\n");
+		set_mps_mac_addr_rcvd(mesg, mpc);
+		break;
+	case CLEAN_UP_AND_EXIT:
+		dprintk(" clean_up_and_exit\n");
+		clean_up(mesg, mpc, DIE);
+		break;
+	case RELOAD:
+		dprintk(" reload\n");
+		clean_up(mesg, mpc, RELOAD);
+		break;
+	case SET_MPC_PARAMS:
+		dprintk(" set_mpc_params\n");
+		mpc->parameters = mesg->content.params;
+		break;
+	default:
+		dprintk(" unknown message %d\n", mesg->type);
+		break;
+	}
+	kfree_skb(skb);
+
+	return 0;
+}
+
+/* Remember that this function may not do things that sleep */
+int msg_to_mpoad(struct k_message *mesg, struct mpoa_client *mpc)
+{
+	struct sk_buff *skb;
+	struct sock *sk;
+
+	if (mpc == NULL || !mpc->mpoad_vcc) {
+		printk("mpoa: msg_to_mpoad: mesg %d to a non-existent mpoad\n", mesg->type);
+		return -ENXIO;
+	}
+
+	skb = alloc_skb(sizeof(struct k_message), GFP_ATOMIC);
+	if (skb == NULL)
+		return -ENOMEM;
+	skb_put(skb, sizeof(struct k_message));
+	memcpy(skb->data, mesg, sizeof(struct k_message));
+	atm_force_charge(mpc->mpoad_vcc, skb->truesize);
+	
+	sk = sk_atm(mpc->mpoad_vcc);
+	skb_queue_tail(&sk->sk_receive_queue, skb);
+	sk->sk_data_ready(sk, skb->len);
+
+	return 0;
+}
+
+static int mpoa_event_listener(struct notifier_block *mpoa_notifier, unsigned long event, void *dev_ptr)
+{
+	struct net_device *dev;
+	struct mpoa_client *mpc;
+	struct lec_priv *priv;
+
+	dev = (struct net_device *)dev_ptr;
+	if (dev->name == NULL || strncmp(dev->name, "lec", 3))
+		return NOTIFY_DONE; /* we are only interested in lec:s */
+	
+	switch (event) {
+	case NETDEV_REGISTER:       /* a new lec device was allocated */
+		priv = (struct lec_priv *)dev->priv;
+		if (priv->lane_version < 2)
+			break;
+		priv->lane2_ops->associate_indicator = lane2_assoc_ind;
+		mpc = find_mpc_by_itfnum(priv->itfnum);
+		if (mpc == NULL) {
+			dprintk("mpoa: mpoa_event_listener: allocating new mpc for %s\n",
+			       dev->name);
+			mpc = alloc_mpc();
+			if (mpc == NULL) {
+				printk("mpoa: mpoa_event_listener: no new mpc");
+				break;
+			}
+		}
+		mpc->dev_num = priv->itfnum;
+		mpc->dev = dev;
+		dev_hold(dev);
+		dprintk("mpoa: (%s) was initialized\n", dev->name);
+		break;
+	case NETDEV_UNREGISTER:
+		/* the lec device was deallocated */
+		mpc = find_mpc_by_lec(dev);
+		if (mpc == NULL)
+			break;
+		dprintk("mpoa: device (%s) was deallocated\n", dev->name);
+		stop_mpc(mpc);
+		dev_put(mpc->dev);
+		mpc->dev = NULL;
+		break;
+	case NETDEV_UP:
+		/* the dev was ifconfig'ed up */
+		mpc = find_mpc_by_lec(dev);
+		if (mpc == NULL)
+			break;
+		if (mpc->mpoad_vcc != NULL) {
+			start_mpc(mpc, dev);
+		}
+		break;
+	case NETDEV_DOWN:
+		/* the dev was ifconfig'ed down */
+		/* this means that the flow of packets from the
+		 * upper layer stops
+		 */
+		mpc = find_mpc_by_lec(dev);
+		if (mpc == NULL)
+			break;
+		if (mpc->mpoad_vcc != NULL) {
+			stop_mpc(mpc);
+		}
+		break;
+	case NETDEV_REBOOT:
+	case NETDEV_CHANGE:
+	case NETDEV_CHANGEMTU:
+	case NETDEV_CHANGEADDR:
+	case NETDEV_GOING_DOWN:
+		break;
+	default:
+		break;
+	}
+
+	return NOTIFY_DONE;
+}
+
+/*
+ * Functions which are called after a message is received from mpcd.
+ * Msg is reused on purpose.
+ */
+
+
+static void MPOA_trigger_rcvd(struct k_message *msg, struct mpoa_client *mpc)
+{
+	uint32_t dst_ip = msg->content.in_info.in_dst_ip;
+	in_cache_entry *entry;
+
+	entry = mpc->in_ops->get(dst_ip, mpc);
+	if(entry == NULL){
+		entry = mpc->in_ops->add_entry(dst_ip, mpc);
+		entry->entry_state = INGRESS_RESOLVING;
+		msg->type = SND_MPOA_RES_RQST;
+		msg->content.in_info = entry->ctrl_info;
+		msg_to_mpoad(msg, mpc);
+		do_gettimeofday(&(entry->reply_wait));
+		mpc->in_ops->put(entry);
+		return;
+	}
+	
+	if(entry->entry_state == INGRESS_INVALID){
+		entry->entry_state = INGRESS_RESOLVING;
+		msg->type = SND_MPOA_RES_RQST;
+		msg->content.in_info = entry->ctrl_info;
+		msg_to_mpoad(msg, mpc);
+		do_gettimeofday(&(entry->reply_wait));
+		mpc->in_ops->put(entry);
+		return;
+	}
+	
+	printk("mpoa: (%s) MPOA_trigger_rcvd: entry already in resolving state\n",
+		(mpc->dev) ? mpc->dev->name : "<unknown>");
+	mpc->in_ops->put(entry);
+	return;
+}
+
+/*
+ * Things get complicated because we have to check if there's an egress
+ * shortcut with suitable traffic parameters we could use. 
+ */
+static void check_qos_and_open_shortcut(struct k_message *msg, struct mpoa_client *client, in_cache_entry *entry)
+{
+	uint32_t dst_ip = msg->content.in_info.in_dst_ip;
+	unsigned char *ip __attribute__ ((unused)) = (unsigned char *)&dst_ip;
+	struct atm_mpoa_qos *qos = atm_mpoa_search_qos(dst_ip);
+	eg_cache_entry *eg_entry = client->eg_ops->get_by_src_ip(dst_ip, client);
+
+	if(eg_entry && eg_entry->shortcut){
+		if(eg_entry->shortcut->qos.txtp.traffic_class &
+		   msg->qos.txtp.traffic_class &
+		   (qos ? qos->qos.txtp.traffic_class : ATM_UBR | ATM_CBR)){
+			    if(eg_entry->shortcut->qos.txtp.traffic_class == ATM_UBR)
+				    entry->shortcut = eg_entry->shortcut;
+			    else if(eg_entry->shortcut->qos.txtp.max_pcr > 0)
+				    entry->shortcut = eg_entry->shortcut;
+		}
+	 	if(entry->shortcut){
+			dprintk("mpoa: (%s) using egress SVC to reach %u.%u.%u.%u\n",client->dev->name, NIPQUAD(ip));
+			client->eg_ops->put(eg_entry);
+			return;
+		}
+	}
+	if (eg_entry != NULL)
+		client->eg_ops->put(eg_entry);
+
+	/* No luck in the egress cache we must open an ingress SVC */
+	msg->type = OPEN_INGRESS_SVC;
+	if (qos && (qos->qos.txtp.traffic_class == msg->qos.txtp.traffic_class))
+	{
+		msg->qos = qos->qos;
+		printk("mpoa: (%s) trying to get a CBR shortcut\n",client->dev->name);
+    	}
+	else memset(&msg->qos,0,sizeof(struct atm_qos));
+	msg_to_mpoad(msg, client);
+	return;
+}
+
+static void MPOA_res_reply_rcvd(struct k_message *msg, struct mpoa_client *mpc)
+{
+	unsigned char *ip;
+
+	uint32_t dst_ip = msg->content.in_info.in_dst_ip;
+	in_cache_entry *entry = mpc->in_ops->get(dst_ip, mpc);
+	ip = (unsigned char *)&dst_ip;
+	dprintk("mpoa: (%s) MPOA_res_reply_rcvd: ip %u.%u.%u.%u\n", mpc->dev->name, NIPQUAD(ip));
+	ddprintk("mpoa: (%s) MPOA_res_reply_rcvd() entry = %p", mpc->dev->name, entry);
+	if(entry == NULL){
+		printk("\nmpoa: (%s) ARGH, received res. reply for an entry that doesn't exist.\n", mpc->dev->name);
+		return;
+	}
+	ddprintk(" entry_state = %d ", entry->entry_state);	
+
+	if (entry->entry_state == INGRESS_RESOLVED) {
+		printk("\nmpoa: (%s) MPOA_res_reply_rcvd for RESOLVED entry!\n", mpc->dev->name);
+		mpc->in_ops->put(entry);
+		return;
+	}
+
+	entry->ctrl_info = msg->content.in_info;
+	do_gettimeofday(&(entry->tv));
+	do_gettimeofday(&(entry->reply_wait)); /* Used in refreshing func from now on */
+	entry->refresh_time = 0;
+	ddprintk("entry->shortcut = %p\n", entry->shortcut);
+
+	if(entry->entry_state == INGRESS_RESOLVING && entry->shortcut != NULL){
+		entry->entry_state = INGRESS_RESOLVED; 
+		mpc->in_ops->put(entry);
+		return; /* Shortcut already open... */
+	}
+
+	if (entry->shortcut != NULL) {
+		printk("mpoa: (%s) MPOA_res_reply_rcvd: entry->shortcut != NULL, impossible!\n",
+		       mpc->dev->name);
+		mpc->in_ops->put(entry);
+		return;
+	}
+	
+	check_qos_and_open_shortcut(msg, mpc, entry);
+	entry->entry_state = INGRESS_RESOLVED;
+	mpc->in_ops->put(entry);
+
+	return;
+
+}
+
+static void ingress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc)
+{
+	uint32_t dst_ip = msg->content.in_info.in_dst_ip;
+	uint32_t mask = msg->ip_mask;
+	unsigned char *ip = (unsigned char *)&dst_ip;
+	in_cache_entry *entry = mpc->in_ops->get_with_mask(dst_ip, mpc, mask);
+
+	if(entry == NULL){
+		printk("mpoa: (%s) ingress_purge_rcvd: purge for a non-existing entry, ", mpc->dev->name);
+		printk("ip = %u.%u.%u.%u\n", ip[0], ip[1], ip[2], ip[3]);
+		return;
+	}
+
+	do {
+		dprintk("mpoa: (%s) ingress_purge_rcvd: removing an ingress entry, ip = %u.%u.%u.%u\n" ,
+			mpc->dev->name, ip[0], ip[1], ip[2], ip[3]);
+		write_lock_bh(&mpc->ingress_lock);
+		mpc->in_ops->remove_entry(entry, mpc);
+		write_unlock_bh(&mpc->ingress_lock);
+		mpc->in_ops->put(entry);
+		entry = mpc->in_ops->get_with_mask(dst_ip, mpc, mask);
+	} while (entry != NULL);
+
+	return;
+} 
+
+static void egress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc)
+{
+	uint32_t cache_id = msg->content.eg_info.cache_id;
+	eg_cache_entry *entry = mpc->eg_ops->get_by_cache_id(cache_id, mpc);
+	
+	if (entry == NULL) {
+		dprintk("mpoa: (%s) egress_purge_rcvd: purge for a non-existing entry\n", mpc->dev->name);
+		return;
+	}
+
+	write_lock_irq(&mpc->egress_lock);
+	mpc->eg_ops->remove_entry(entry, mpc);
+	write_unlock_irq(&mpc->egress_lock);
+
+	mpc->eg_ops->put(entry);
+
+	return;
+} 
+
+static void purge_egress_shortcut(struct atm_vcc *vcc, eg_cache_entry *entry)
+{
+	struct sock *sk;
+	struct k_message *purge_msg;
+	struct sk_buff *skb;
+
+	dprintk("mpoa: purge_egress_shortcut: entering\n");
+	if (vcc == NULL) {
+		printk("mpoa: purge_egress_shortcut: vcc == NULL\n");
+		return;
+	}
+
+	skb = alloc_skb(sizeof(struct k_message), GFP_ATOMIC);
+	if (skb == NULL) {
+		 printk("mpoa: purge_egress_shortcut: out of memory\n");
+		return;
+	}
+
+	skb_put(skb, sizeof(struct k_message));
+	memset(skb->data, 0, sizeof(struct k_message));
+	purge_msg = (struct k_message *)skb->data;
+	purge_msg->type = DATA_PLANE_PURGE;
+	if (entry != NULL)
+		purge_msg->content.eg_info = entry->ctrl_info;
+
+	atm_force_charge(vcc, skb->truesize);
+
+	sk = sk_atm(vcc);
+	skb_queue_tail(&sk->sk_receive_queue, skb);
+	sk->sk_data_ready(sk, skb->len);
+	dprintk("mpoa: purge_egress_shortcut: exiting:\n");
+
+	return;
+}
+
+/*
+ * Our MPS died. Tell our daemon to send NHRP data plane purge to each
+ * of the egress shortcuts we have.
+ */
+static void mps_death( struct k_message * msg, struct mpoa_client * mpc )
+{
+	eg_cache_entry *entry;
+
+	dprintk("mpoa: (%s) mps_death:\n", mpc->dev->name);
+
+	if(memcmp(msg->MPS_ctrl, mpc->mps_ctrl_addr, ATM_ESA_LEN)){
+		printk("mpoa: (%s) mps_death: wrong MPS\n", mpc->dev->name);
+		return;
+	}
+
+	/* FIXME: This knows too much of the cache structure */
+	read_lock_irq(&mpc->egress_lock);
+	entry = mpc->eg_cache;
+	while (entry != NULL) {
+		purge_egress_shortcut(entry->shortcut, entry);
+		entry = entry->next;
+	}
+	read_unlock_irq(&mpc->egress_lock);
+
+	mpc->in_ops->destroy_cache(mpc);
+	mpc->eg_ops->destroy_cache(mpc);
+
+	return;
+}
+
+static void MPOA_cache_impos_rcvd( struct k_message * msg, struct mpoa_client * mpc)
+{
+	uint16_t holding_time;
+	eg_cache_entry *entry = mpc->eg_ops->get_by_cache_id(msg->content.eg_info.cache_id, mpc);
+	
+	holding_time = msg->content.eg_info.holding_time;
+	dprintk("mpoa: (%s) MPOA_cache_impos_rcvd: entry = %p, holding_time = %u\n",
+	       mpc->dev->name, entry, holding_time);
+	if(entry == NULL && holding_time) {
+		entry = mpc->eg_ops->add_entry(msg, mpc);
+		mpc->eg_ops->put(entry);
+		return;
+	}
+	if(holding_time){
+		mpc->eg_ops->update(entry, holding_time);
+		return;
+	}
+	
+	write_lock_irq(&mpc->egress_lock);
+	mpc->eg_ops->remove_entry(entry, mpc);
+	write_unlock_irq(&mpc->egress_lock);
+
+	mpc->eg_ops->put(entry);
+	
+	return;
+}
+
+static void set_mpc_ctrl_addr_rcvd(struct k_message *mesg, struct mpoa_client *mpc)
+{
+	struct lec_priv *priv;
+	int i, retval ;
+
+	uint8_t tlv[4 + 1 + 1 + 1 + ATM_ESA_LEN];
+
+	tlv[0] = 00; tlv[1] = 0xa0; tlv[2] = 0x3e; tlv[3] = 0x2a; /* type  */
+	tlv[4] = 1 + 1 + ATM_ESA_LEN;  /* length                           */
+	tlv[5] = 0x02;                 /* MPOA client                      */
+	tlv[6] = 0x00;                 /* number of MPS MAC addresses      */
+
+	memcpy(&tlv[7], mesg->MPS_ctrl, ATM_ESA_LEN); /* MPC ctrl ATM addr */
+	memcpy(mpc->our_ctrl_addr, mesg->MPS_ctrl, ATM_ESA_LEN);
+
+	dprintk("mpoa: (%s) setting MPC ctrl ATM address to ",
+	       (mpc->dev) ? mpc->dev->name : "<unknown>");
+	for (i = 7; i < sizeof(tlv); i++)
+		dprintk("%02x ", tlv[i]);
+	dprintk("\n");
+
+	if (mpc->dev) {
+		priv = (struct lec_priv *)mpc->dev->priv;
+		retval = priv->lane2_ops->associate_req(mpc->dev, mpc->dev->dev_addr, tlv, sizeof(tlv));
+		if (retval == 0)
+			printk("mpoa: (%s) MPOA device type TLV association failed\n", mpc->dev->name);
+		retval = priv->lane2_ops->resolve(mpc->dev, NULL, 1, NULL, NULL);
+		if (retval < 0)
+			printk("mpoa: (%s) targetless LE_ARP request failed\n", mpc->dev->name);
+	}
+
+	return;
+}
+
+static void set_mps_mac_addr_rcvd(struct k_message *msg, struct mpoa_client *client)
+{
+
+	if(client->number_of_mps_macs)
+		kfree(client->mps_macs);
+	client->number_of_mps_macs = 0;
+	client->mps_macs = kmalloc(ETH_ALEN,GFP_KERNEL);
+	if (client->mps_macs == NULL) {
+		printk("mpoa: set_mps_mac_addr_rcvd: out of memory\n");
+		return;
+	}
+	client->number_of_mps_macs = 1;
+	memcpy(client->mps_macs, msg->MPS_ctrl, ETH_ALEN);
+	
+	return;
+}
+
+/*
+ * purge egress cache and tell daemon to 'action' (DIE, RELOAD)
+ */
+static void clean_up(struct k_message *msg, struct mpoa_client *mpc, int action)
+{
+
+	eg_cache_entry *entry;
+	msg->type = SND_EGRESS_PURGE;
+
+
+	/* FIXME: This knows too much of the cache structure */
+	read_lock_irq(&mpc->egress_lock);
+	entry = mpc->eg_cache;
+	while (entry != NULL){
+		    msg->content.eg_info = entry->ctrl_info;
+		    dprintk("mpoa: cache_id %u\n", entry->ctrl_info.cache_id);
+		    msg_to_mpoad(msg, mpc);
+		    entry = entry->next;
+	}
+	read_unlock_irq(&mpc->egress_lock);
+
+	msg->type = action;
+	msg_to_mpoad(msg, mpc);
+	return;
+}
+
+static void mpc_timer_refresh(void)
+{
+	mpc_timer.expires = jiffies + (MPC_P2 * HZ);
+	mpc_timer.data = mpc_timer.expires;
+	mpc_timer.function = mpc_cache_check;
+	add_timer(&mpc_timer);
+	
+	return;
+}
+
+static void mpc_cache_check( unsigned long checking_time  )
+{
+	struct mpoa_client *mpc = mpcs;
+	static unsigned long previous_resolving_check_time;
+	static unsigned long previous_refresh_time;
+	
+	while( mpc != NULL ){
+		mpc->in_ops->clear_count(mpc);
+		mpc->eg_ops->clear_expired(mpc);
+		if(checking_time - previous_resolving_check_time > mpc->parameters.mpc_p4 * HZ ){
+			mpc->in_ops->check_resolving(mpc);
+			previous_resolving_check_time = checking_time;
+		}
+		if(checking_time - previous_refresh_time > mpc->parameters.mpc_p5 * HZ ){
+			mpc->in_ops->refresh(mpc);
+			previous_refresh_time = checking_time;
+		}
+		mpc = mpc->next;
+	}
+	mpc_timer_refresh();
+	
+	return;
+}
+
+static int atm_mpoa_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
+{
+	int err = 0;
+	struct atm_vcc *vcc = ATM_SD(sock);
+
+	if (cmd != ATMMPC_CTRL && cmd != ATMMPC_DATA)
+		return -ENOIOCTLCMD;
+
+	if (!capable(CAP_NET_ADMIN))
+		return -EPERM;
+
+	switch (cmd) {
+		case ATMMPC_CTRL:
+			err = atm_mpoa_mpoad_attach(vcc, (int)arg);
+			if (err >= 0)
+				sock->state = SS_CONNECTED;
+			break;
+		case ATMMPC_DATA:
+			err = atm_mpoa_vcc_attach(vcc, (void __user *)arg);
+			break;
+		default:
+			break;
+	}
+	return err;
+}
+
+
+static struct atm_ioctl atm_ioctl_ops = {
+	.owner	= THIS_MODULE,
+	.ioctl	= atm_mpoa_ioctl,
+};
+
+static __init int atm_mpoa_init(void)
+{
+	register_atm_ioctl(&atm_ioctl_ops);
+
+#ifdef CONFIG_PROC_FS
+	if (mpc_proc_init() != 0)
+		printk(KERN_INFO "mpoa: failed to initialize /proc/mpoa\n");
+	else
+		printk(KERN_INFO "mpoa: /proc/mpoa initialized\n");
+#endif
+
+	printk("mpc.c: " __DATE__ " " __TIME__ " initialized\n");
+
+	return 0;
+}
+
+static void __exit atm_mpoa_cleanup(void)
+{
+	struct mpoa_client *mpc, *tmp;
+	struct atm_mpoa_qos *qos, *nextqos;
+	struct lec_priv *priv;
+
+#ifdef CONFIG_PROC_FS
+	mpc_proc_clean();
+#endif
+
+	del_timer(&mpc_timer);
+	unregister_netdevice_notifier(&mpoa_notifier);
+	deregister_atm_ioctl(&atm_ioctl_ops);
+
+	mpc = mpcs;
+	mpcs = NULL;
+	while (mpc != NULL) {
+		tmp = mpc->next;
+		if (mpc->dev != NULL) {
+			stop_mpc(mpc);
+			priv = (struct lec_priv *)mpc->dev->priv;
+			if (priv->lane2_ops != NULL)
+				priv->lane2_ops->associate_indicator = NULL;
+		}
+		ddprintk("mpoa: cleanup_module: about to clear caches\n");
+		mpc->in_ops->destroy_cache(mpc);
+		mpc->eg_ops->destroy_cache(mpc);
+		ddprintk("mpoa: cleanup_module: caches cleared\n");
+		kfree(mpc->mps_macs);
+		memset(mpc, 0, sizeof(struct mpoa_client));
+		ddprintk("mpoa: cleanup_module: about to kfree %p\n", mpc);
+		kfree(mpc);
+		ddprintk("mpoa: cleanup_module: next mpc is at %p\n", tmp);
+		mpc = tmp;
+	}
+
+	qos = qos_head;
+	qos_head = NULL;
+	while (qos != NULL) {
+		nextqos = qos->next;
+		dprintk("mpoa: cleanup_module: freeing qos entry %p\n", qos);
+		kfree(qos);
+		qos = nextqos;
+	}
+
+	return;
+}
+
+module_init(atm_mpoa_init);
+module_exit(atm_mpoa_cleanup);
+
+MODULE_LICENSE("GPL");
diff --git a/net/atm/mpc.h b/net/atm/mpc.h
new file mode 100644
index 000000000000..863ddf6079e1
--- /dev/null
+++ b/net/atm/mpc.h
@@ -0,0 +1,53 @@
+#ifndef _MPC_H_
+#define _MPC_H_
+
+#include <linux/types.h>
+#include <linux/atm.h>
+#include <linux/atmmpc.h>
+#include <linux/skbuff.h>
+#include <linux/spinlock.h>
+#include "mpoa_caches.h"
+
+/* kernel -> mpc-daemon */
+int msg_to_mpoad(struct k_message *msg, struct mpoa_client *mpc);
+
+struct mpoa_client {
+        struct mpoa_client *next;
+        struct net_device *dev;      /* lec in question                     */
+        int dev_num;                 /* e.g. 2 for lec2                     */
+        int (*old_hard_start_xmit)(struct sk_buff *skb, struct net_device *dev);
+        struct atm_vcc *mpoad_vcc;   /* control channel to mpoad            */
+        uint8_t mps_ctrl_addr[ATM_ESA_LEN];  /* MPS control ATM address     */
+        uint8_t our_ctrl_addr[ATM_ESA_LEN];  /* MPC's control ATM address   */
+
+        rwlock_t ingress_lock;
+        struct in_cache_ops *in_ops; /* ingress cache operations            */
+        in_cache_entry *in_cache;    /* the ingress cache of this MPC       */
+
+        rwlock_t egress_lock;
+        struct eg_cache_ops *eg_ops; /* egress cache operations             */
+        eg_cache_entry *eg_cache;    /* the egress  cache of this MPC       */
+
+        uint8_t *mps_macs;           /* array of MPS MAC addresses, >=1     */
+        int number_of_mps_macs;      /* number of the above MAC addresses   */
+        struct mpc_parameters parameters;  /* parameters for this client    */
+};
+
+
+struct atm_mpoa_qos {
+        struct atm_mpoa_qos *next;
+        uint32_t ipaddr;
+        struct atm_qos qos;
+};
+
+
+/* MPOA QoS operations */
+struct atm_mpoa_qos *atm_mpoa_add_qos(uint32_t dst_ip, struct atm_qos *qos);
+struct atm_mpoa_qos *atm_mpoa_search_qos(uint32_t dst_ip);
+int atm_mpoa_delete_qos(struct atm_mpoa_qos *qos);
+
+/* Display QoS entries. This is for the procfs */
+struct seq_file;
+void atm_mpoa_disp_qos(struct seq_file *m);
+
+#endif /* _MPC_H_ */
diff --git a/net/atm/mpoa_caches.c b/net/atm/mpoa_caches.c
new file mode 100644
index 000000000000..64ddebb64060
--- /dev/null
+++ b/net/atm/mpoa_caches.c
@@ -0,0 +1,576 @@
+#include <linux/types.h>
+#include <linux/atmmpc.h>
+#include <linux/time.h>
+
+#include "mpoa_caches.h"
+#include "mpc.h"
+
+/*
+ * mpoa_caches.c: Implementation of ingress and egress cache
+ * handling functions
+ */
+
+#if 0
+#define dprintk printk    /* debug */
+#else
+#define dprintk(format,args...)
+#endif
+
+#if 0
+#define ddprintk printk  /* more debug */
+#else
+#define ddprintk(format,args...)
+#endif
+
+static in_cache_entry *in_cache_get(uint32_t dst_ip,
+				    struct mpoa_client *client)
+{
+	in_cache_entry *entry;
+
+	read_lock_bh(&client->ingress_lock);
+	entry = client->in_cache;
+	while(entry != NULL){
+		if( entry->ctrl_info.in_dst_ip == dst_ip ){
+			atomic_inc(&entry->use);
+			read_unlock_bh(&client->ingress_lock);
+			return entry;
+		}
+		entry = entry->next;
+	}
+	read_unlock_bh(&client->ingress_lock);
+
+	return NULL;
+}
+
+static in_cache_entry *in_cache_get_with_mask(uint32_t dst_ip,
+					      struct mpoa_client *client,
+					      uint32_t mask)
+{
+	in_cache_entry *entry;
+
+	read_lock_bh(&client->ingress_lock);
+	entry = client->in_cache;
+	while(entry != NULL){
+		if((entry->ctrl_info.in_dst_ip & mask)  == (dst_ip & mask )){
+			atomic_inc(&entry->use);
+			read_unlock_bh(&client->ingress_lock);
+			return entry;
+		}
+		entry = entry->next;
+	}
+	read_unlock_bh(&client->ingress_lock);
+
+	return NULL;
+
+}
+
+static in_cache_entry *in_cache_get_by_vcc(struct atm_vcc *vcc,
+					   struct mpoa_client *client )
+{
+	in_cache_entry *entry;
+
+	read_lock_bh(&client->ingress_lock);
+	entry = client->in_cache;
+	while(entry != NULL){
+		if(entry->shortcut == vcc) {
+			atomic_inc(&entry->use);
+			read_unlock_bh(&client->ingress_lock);
+			return entry;
+		}
+		entry = entry->next;
+	}
+	read_unlock_bh(&client->ingress_lock);
+
+	return NULL;
+}
+
+static in_cache_entry *in_cache_add_entry(uint32_t dst_ip,
+					  struct mpoa_client *client)
+{
+	unsigned char *ip __attribute__ ((unused)) = (unsigned char *)&dst_ip;
+	in_cache_entry* entry = kmalloc(sizeof(in_cache_entry), GFP_KERNEL);
+
+	if (entry == NULL) {
+		printk("mpoa: mpoa_caches.c: new_in_cache_entry: out of memory\n");
+		return NULL;
+	}
+
+	dprintk("mpoa: mpoa_caches.c: adding an ingress entry, ip = %u.%u.%u.%u\n", ip[0], ip[1], ip[2], ip[3]);
+	memset(entry,0,sizeof(in_cache_entry));
+
+	atomic_set(&entry->use, 1);
+	dprintk("mpoa: mpoa_caches.c: new_in_cache_entry: about to lock\n");
+	write_lock_bh(&client->ingress_lock);
+	entry->next = client->in_cache;
+	entry->prev = NULL;
+	if (client->in_cache != NULL)
+		client->in_cache->prev = entry;
+	client->in_cache = entry;
+
+	memcpy(entry->MPS_ctrl_ATM_addr, client->mps_ctrl_addr, ATM_ESA_LEN);
+	entry->ctrl_info.in_dst_ip = dst_ip;
+	do_gettimeofday(&(entry->tv));
+	entry->retry_time = client->parameters.mpc_p4;
+	entry->count = 1;
+	entry->entry_state = INGRESS_INVALID;
+	entry->ctrl_info.holding_time = HOLDING_TIME_DEFAULT;
+	atomic_inc(&entry->use);
+
+	write_unlock_bh(&client->ingress_lock);
+	dprintk("mpoa: mpoa_caches.c: new_in_cache_entry: unlocked\n");
+
+	return entry;
+}
+
+static int cache_hit(in_cache_entry *entry, struct mpoa_client *mpc)
+{
+	struct atm_mpoa_qos *qos;
+	struct k_message msg;
+
+	entry->count++;
+	if(entry->entry_state == INGRESS_RESOLVED && entry->shortcut != NULL)
+		return OPEN;
+
+	if(entry->entry_state == INGRESS_REFRESHING){
+		if(entry->count > mpc->parameters.mpc_p1){
+			msg.type = SND_MPOA_RES_RQST;
+			msg.content.in_info = entry->ctrl_info;
+			memcpy(msg.MPS_ctrl, mpc->mps_ctrl_addr, ATM_ESA_LEN);
+			qos = atm_mpoa_search_qos(entry->ctrl_info.in_dst_ip);
+			if (qos != NULL) msg.qos = qos->qos;
+			msg_to_mpoad(&msg, mpc);
+			do_gettimeofday(&(entry->reply_wait));
+			entry->entry_state = INGRESS_RESOLVING;
+		}
+		if(entry->shortcut != NULL)
+			return OPEN;
+		return CLOSED;
+	}
+
+	if(entry->entry_state == INGRESS_RESOLVING && entry->shortcut != NULL)
+		return OPEN;
+
+	if( entry->count > mpc->parameters.mpc_p1 &&
+	    entry->entry_state == INGRESS_INVALID){
+		unsigned char *ip __attribute__ ((unused)) =
+		    (unsigned char *)&entry->ctrl_info.in_dst_ip;
+
+		dprintk("mpoa: (%s) mpoa_caches.c: threshold exceeded for ip %u.%u.%u.%u, sending MPOA res req\n", mpc->dev->name, ip[0], ip[1], ip[2], ip[3]);
+		entry->entry_state = INGRESS_RESOLVING;
+		msg.type =  SND_MPOA_RES_RQST;
+		memcpy(msg.MPS_ctrl, mpc->mps_ctrl_addr, ATM_ESA_LEN );
+		msg.content.in_info = entry->ctrl_info;
+		qos = atm_mpoa_search_qos(entry->ctrl_info.in_dst_ip);
+		if (qos != NULL) msg.qos = qos->qos;
+		msg_to_mpoad( &msg, mpc);
+		do_gettimeofday(&(entry->reply_wait));
+	}
+
+	return CLOSED;
+}
+
+static void in_cache_put(in_cache_entry *entry)
+{
+	if (atomic_dec_and_test(&entry->use)) {
+		memset(entry, 0, sizeof(in_cache_entry));
+		kfree(entry);
+	}
+
+	return;
+}
+
+/*
+ * This should be called with write lock on
+ */
+static void in_cache_remove_entry(in_cache_entry *entry,
+				  struct mpoa_client *client)
+{
+	struct atm_vcc *vcc;
+	struct k_message msg;
+	unsigned char *ip;
+
+	vcc = entry->shortcut;
+	ip = (unsigned char *)&entry->ctrl_info.in_dst_ip;
+	dprintk("mpoa: mpoa_caches.c: removing an ingress entry, ip = %u.%u.%u.%u\n",ip[0], ip[1], ip[2], ip[3]);
+
+	if (entry->prev != NULL)
+		entry->prev->next = entry->next;
+	else
+		client->in_cache = entry->next;
+	if (entry->next != NULL)
+		entry->next->prev = entry->prev;
+	client->in_ops->put(entry);
+	if(client->in_cache == NULL && client->eg_cache == NULL){
+		msg.type = STOP_KEEP_ALIVE_SM;
+		msg_to_mpoad(&msg,client);
+	}
+
+	/* Check if the egress side still uses this VCC */
+	if (vcc != NULL) {
+		eg_cache_entry *eg_entry = client->eg_ops->get_by_vcc(vcc, client);
+		if (eg_entry != NULL) {
+			client->eg_ops->put(eg_entry);
+			return;
+		}
+		vcc_release_async(vcc, -EPIPE);
+	}
+
+	return;
+}
+
+
+/* Call this every MPC-p2 seconds... Not exactly correct solution,
+   but an easy one... */
+static void clear_count_and_expired(struct mpoa_client *client)
+{
+	unsigned char *ip;
+	in_cache_entry *entry, *next_entry;
+	struct timeval now;
+
+	do_gettimeofday(&now);
+
+	write_lock_bh(&client->ingress_lock);
+	entry = client->in_cache;
+	while(entry != NULL){
+		entry->count=0;
+		next_entry = entry->next;
+		if((now.tv_sec - entry->tv.tv_sec)
+		   > entry->ctrl_info.holding_time){
+			ip = (unsigned char*)&entry->ctrl_info.in_dst_ip;
+			dprintk("mpoa: mpoa_caches.c: holding time expired, ip = %u.%u.%u.%u\n", NIPQUAD(ip));
+			client->in_ops->remove_entry(entry, client);
+		}
+		entry = next_entry;
+	}
+	write_unlock_bh(&client->ingress_lock);
+
+	return;
+}
+
+/* Call this every MPC-p4 seconds. */
+static void check_resolving_entries(struct mpoa_client *client)
+{
+
+	struct atm_mpoa_qos *qos;
+	in_cache_entry *entry;
+	struct timeval now;
+	struct k_message msg;
+
+	do_gettimeofday( &now );
+
+	read_lock_bh(&client->ingress_lock);
+	entry = client->in_cache;
+	while( entry != NULL ){
+		if(entry->entry_state == INGRESS_RESOLVING){
+			if(now.tv_sec - entry->hold_down.tv_sec < client->parameters.mpc_p6){
+				entry = entry->next;                      /* Entry in hold down */
+				continue;
+			}
+			if( (now.tv_sec - entry->reply_wait.tv_sec) >
+			    entry->retry_time ){
+				entry->retry_time = MPC_C1*( entry->retry_time );
+				if(entry->retry_time > client->parameters.mpc_p5){
+					/* Retry time maximum exceeded, put entry in hold down. */
+					do_gettimeofday(&(entry->hold_down));
+					entry->retry_time = client->parameters.mpc_p4;
+					entry = entry->next;
+					continue;
+				}
+				/* Ask daemon to send a resolution request. */
+				memset(&(entry->hold_down),0,sizeof(struct timeval));
+				msg.type = SND_MPOA_RES_RTRY;
+				memcpy(msg.MPS_ctrl, client->mps_ctrl_addr, ATM_ESA_LEN);
+				msg.content.in_info = entry->ctrl_info;
+				qos = atm_mpoa_search_qos(entry->ctrl_info.in_dst_ip);
+				if (qos != NULL) msg.qos = qos->qos;
+				msg_to_mpoad(&msg, client);
+				do_gettimeofday(&(entry->reply_wait));
+			}
+		}
+		entry = entry->next;
+	}
+	read_unlock_bh(&client->ingress_lock);
+}
+
+/* Call this every MPC-p5 seconds. */
+static void refresh_entries(struct mpoa_client *client)
+{
+	struct timeval now;
+	struct in_cache_entry *entry = client->in_cache;
+
+	ddprintk("mpoa: mpoa_caches.c: refresh_entries\n");
+	do_gettimeofday(&now);
+
+	read_lock_bh(&client->ingress_lock);
+	while( entry != NULL ){
+		if( entry->entry_state == INGRESS_RESOLVED ){
+			if(!(entry->refresh_time))
+				entry->refresh_time = (2*(entry->ctrl_info.holding_time))/3;
+			if( (now.tv_sec - entry->reply_wait.tv_sec) > entry->refresh_time ){
+				dprintk("mpoa: mpoa_caches.c: refreshing an entry.\n");
+				entry->entry_state = INGRESS_REFRESHING;
+
+			}
+		}
+		entry = entry->next;
+	}
+	read_unlock_bh(&client->ingress_lock);
+}
+
+static void in_destroy_cache(struct mpoa_client *mpc)
+{
+	write_lock_irq(&mpc->ingress_lock);
+	while(mpc->in_cache != NULL)
+		mpc->in_ops->remove_entry(mpc->in_cache, mpc);
+	write_unlock_irq(&mpc->ingress_lock);
+
+	return;
+}
+
+static eg_cache_entry *eg_cache_get_by_cache_id(uint32_t cache_id, struct mpoa_client *mpc)
+{
+	eg_cache_entry *entry;
+
+	read_lock_irq(&mpc->egress_lock);
+	entry = mpc->eg_cache;
+	while(entry != NULL){
+		if(entry->ctrl_info.cache_id == cache_id){
+			atomic_inc(&entry->use);
+			read_unlock_irq(&mpc->egress_lock);
+			return entry;
+		}
+		entry = entry->next;
+	}
+	read_unlock_irq(&mpc->egress_lock);
+
+	return NULL;
+}
+
+/* This can be called from any context since it saves CPU flags */
+static eg_cache_entry *eg_cache_get_by_tag(uint32_t tag, struct mpoa_client *mpc)
+{
+	unsigned long flags;
+	eg_cache_entry *entry;
+
+	read_lock_irqsave(&mpc->egress_lock, flags);
+	entry = mpc->eg_cache;
+	while (entry != NULL){
+		if (entry->ctrl_info.tag == tag) {
+			atomic_inc(&entry->use);
+			read_unlock_irqrestore(&mpc->egress_lock, flags);
+			return entry;
+		}
+		entry = entry->next;
+	}
+	read_unlock_irqrestore(&mpc->egress_lock, flags);
+
+	return NULL;
+}
+
+/* This can be called from any context since it saves CPU flags */
+static eg_cache_entry *eg_cache_get_by_vcc(struct atm_vcc *vcc, struct mpoa_client *mpc)
+{
+	unsigned long flags;
+	eg_cache_entry *entry;
+
+	read_lock_irqsave(&mpc->egress_lock, flags);
+	entry = mpc->eg_cache;
+	while (entry != NULL){
+		if (entry->shortcut == vcc) {
+			atomic_inc(&entry->use);
+	       		read_unlock_irqrestore(&mpc->egress_lock, flags);
+			return entry;
+		}
+		entry = entry->next;
+	}
+	read_unlock_irqrestore(&mpc->egress_lock, flags);
+
+	return NULL;
+}
+
+static eg_cache_entry *eg_cache_get_by_src_ip(uint32_t ipaddr, struct mpoa_client *mpc)
+{
+	eg_cache_entry *entry;
+
+	read_lock_irq(&mpc->egress_lock);
+	entry = mpc->eg_cache;
+	while(entry != NULL){
+		if(entry->latest_ip_addr == ipaddr) {
+			atomic_inc(&entry->use);
+	       		read_unlock_irq(&mpc->egress_lock);
+			return entry;
+		}
+		entry = entry->next;
+	}
+	read_unlock_irq(&mpc->egress_lock);
+
+	return NULL;
+}
+
+static void eg_cache_put(eg_cache_entry *entry)
+{
+	if (atomic_dec_and_test(&entry->use)) {
+		memset(entry, 0, sizeof(eg_cache_entry));
+		kfree(entry);
+	}
+
+	return;
+}
+
+/*
+ * This should be called with write lock on
+ */
+static void eg_cache_remove_entry(eg_cache_entry *entry,
+				  struct mpoa_client *client)
+{
+	struct atm_vcc *vcc;
+	struct k_message msg;
+
+	vcc = entry->shortcut;
+	dprintk("mpoa: mpoa_caches.c: removing an egress entry.\n");
+	if (entry->prev != NULL)
+		entry->prev->next = entry->next;
+	else
+		client->eg_cache = entry->next;
+	if (entry->next != NULL)
+		entry->next->prev = entry->prev;
+	client->eg_ops->put(entry);
+	if(client->in_cache == NULL && client->eg_cache == NULL){
+		msg.type = STOP_KEEP_ALIVE_SM;
+		msg_to_mpoad(&msg,client);
+	}
+
+	/* Check if the ingress side still uses this VCC */
+	if (vcc != NULL) {
+		in_cache_entry *in_entry = client->in_ops->get_by_vcc(vcc, client);
+		if (in_entry != NULL) {
+			client->in_ops->put(in_entry);
+			return;
+		}
+		vcc_release_async(vcc, -EPIPE);
+	}
+
+	return;
+}
+
+static eg_cache_entry *eg_cache_add_entry(struct k_message *msg, struct mpoa_client *client)
+{
+	unsigned char *ip;
+	eg_cache_entry *entry = kmalloc(sizeof(eg_cache_entry), GFP_KERNEL);
+
+	if (entry == NULL) {
+		printk("mpoa: mpoa_caches.c: new_eg_cache_entry: out of memory\n");
+		return NULL;
+	}
+
+	ip = (unsigned char *)&msg->content.eg_info.eg_dst_ip;
+	dprintk("mpoa: mpoa_caches.c: adding an egress entry, ip = %u.%u.%u.%u, this should be our IP\n", NIPQUAD(ip));
+	memset(entry, 0, sizeof(eg_cache_entry));
+
+	atomic_set(&entry->use, 1);
+	dprintk("mpoa: mpoa_caches.c: new_eg_cache_entry: about to lock\n");
+	write_lock_irq(&client->egress_lock);
+	entry->next = client->eg_cache;
+	entry->prev = NULL;
+	if (client->eg_cache != NULL)
+		client->eg_cache->prev = entry;
+	client->eg_cache = entry;
+
+	memcpy(entry->MPS_ctrl_ATM_addr, client->mps_ctrl_addr, ATM_ESA_LEN);
+	entry->ctrl_info = msg->content.eg_info;
+	do_gettimeofday(&(entry->tv));
+	entry->entry_state = EGRESS_RESOLVED;
+	dprintk("mpoa: mpoa_caches.c: new_eg_cache_entry cache_id %lu\n", ntohl(entry->ctrl_info.cache_id));
+	ip = (unsigned char *)&entry->ctrl_info.mps_ip;
+	dprintk("mpoa: mpoa_caches.c: mps_ip = %u.%u.%u.%u\n", NIPQUAD(ip));
+	atomic_inc(&entry->use);
+
+	write_unlock_irq(&client->egress_lock);
+	dprintk("mpoa: mpoa_caches.c: new_eg_cache_entry: unlocked\n");
+
+	return entry;
+}
+
+static void update_eg_cache_entry(eg_cache_entry * entry, uint16_t holding_time)
+{
+	do_gettimeofday(&(entry->tv));
+	entry->entry_state = EGRESS_RESOLVED;
+	entry->ctrl_info.holding_time = holding_time;
+
+	return;
+}
+
+static void clear_expired(struct mpoa_client *client)
+{
+	eg_cache_entry *entry, *next_entry;
+	struct timeval now;
+	struct k_message msg;
+
+	do_gettimeofday(&now);
+
+	write_lock_irq(&client->egress_lock);
+	entry = client->eg_cache;
+	while(entry != NULL){
+		next_entry = entry->next;
+		if((now.tv_sec - entry->tv.tv_sec)
+		   > entry->ctrl_info.holding_time){
+			msg.type = SND_EGRESS_PURGE;
+			msg.content.eg_info = entry->ctrl_info;
+			dprintk("mpoa: mpoa_caches.c: egress_cache: holding time expired, cache_id = %lu.\n",ntohl(entry->ctrl_info.cache_id));
+			msg_to_mpoad(&msg, client);
+			client->eg_ops->remove_entry(entry, client);
+		}
+		entry = next_entry;
+	}
+	write_unlock_irq(&client->egress_lock);
+
+	return;
+}
+
+static void eg_destroy_cache(struct mpoa_client *mpc)
+{
+	write_lock_irq(&mpc->egress_lock);
+	while(mpc->eg_cache != NULL)
+		mpc->eg_ops->remove_entry(mpc->eg_cache, mpc);
+	write_unlock_irq(&mpc->egress_lock);
+
+	return;
+}
+
+
+
+static struct in_cache_ops ingress_ops = {
+	in_cache_add_entry,               /* add_entry       */
+	in_cache_get,                     /* get             */
+	in_cache_get_with_mask,           /* get_with_mask   */
+	in_cache_get_by_vcc,              /* get_by_vcc      */
+	in_cache_put,                     /* put             */
+	in_cache_remove_entry,            /* remove_entry    */
+	cache_hit,                        /* cache_hit       */
+	clear_count_and_expired,          /* clear_count     */
+	check_resolving_entries,          /* check_resolving */
+	refresh_entries,                  /* refresh         */
+	in_destroy_cache                  /* destroy_cache   */
+};
+
+static struct eg_cache_ops egress_ops = {
+	eg_cache_add_entry,               /* add_entry        */
+	eg_cache_get_by_cache_id,         /* get_by_cache_id  */
+	eg_cache_get_by_tag,              /* get_by_tag       */
+	eg_cache_get_by_vcc,              /* get_by_vcc       */
+	eg_cache_get_by_src_ip,           /* get_by_src_ip    */
+	eg_cache_put,                     /* put              */
+	eg_cache_remove_entry,            /* remove_entry     */
+	update_eg_cache_entry,            /* update           */
+	clear_expired,                    /* clear_expired    */
+	eg_destroy_cache                  /* destroy_cache    */
+};
+
+
+void atm_mpoa_init_cache(struct mpoa_client *mpc)
+{
+	mpc->in_ops = &ingress_ops;
+	mpc->eg_ops = &egress_ops;
+
+	return;
+}
diff --git a/net/atm/mpoa_caches.h b/net/atm/mpoa_caches.h
new file mode 100644
index 000000000000..6c9886a03d0b
--- /dev/null
+++ b/net/atm/mpoa_caches.h
@@ -0,0 +1,96 @@
+#ifndef MPOA_CACHES_H
+#define MPOA_CACHES_H
+
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/atm.h>
+#include <linux/atmdev.h>
+#include <linux/atmmpc.h>
+
+struct mpoa_client;
+
+void atm_mpoa_init_cache(struct mpoa_client *mpc);
+
+typedef struct in_cache_entry {
+        struct in_cache_entry *next;
+        struct in_cache_entry *prev;
+        struct timeval  tv;
+        struct timeval  reply_wait;
+        struct timeval  hold_down;
+        uint32_t  packets_fwded;
+        uint16_t  entry_state; 
+        uint32_t retry_time;
+        uint32_t refresh_time;
+        uint32_t count;
+        struct   atm_vcc *shortcut;
+        uint8_t  MPS_ctrl_ATM_addr[ATM_ESA_LEN];
+        struct   in_ctrl_info ctrl_info;
+        atomic_t use;
+} in_cache_entry;
+
+struct in_cache_ops{
+        in_cache_entry *(*add_entry)(uint32_t dst_ip,
+                                      struct mpoa_client *client);
+        in_cache_entry *(*get)(uint32_t dst_ip, struct mpoa_client *client);
+        in_cache_entry *(*get_with_mask)(uint32_t dst_ip, 
+					 struct mpoa_client *client,
+					 uint32_t mask);
+        in_cache_entry *(*get_by_vcc)(struct atm_vcc *vcc, 
+                                      struct mpoa_client *client);
+        void            (*put)(in_cache_entry *entry);
+        void            (*remove_entry)(in_cache_entry *delEntry,
+					struct mpoa_client *client );
+        int             (*cache_hit)(in_cache_entry *entry,
+                                     struct mpoa_client *client);
+        void            (*clear_count)(struct mpoa_client *client);
+        void            (*check_resolving)(struct mpoa_client *client);
+        void            (*refresh)(struct mpoa_client *client);
+        void            (*destroy_cache)(struct mpoa_client *mpc);
+};
+
+typedef struct eg_cache_entry{
+        struct               eg_cache_entry *next;
+        struct               eg_cache_entry *prev;
+        struct               timeval  tv;
+        uint8_t              MPS_ctrl_ATM_addr[ATM_ESA_LEN];
+        struct atm_vcc       *shortcut;
+        uint32_t             packets_rcvd;
+        uint16_t             entry_state;
+        uint32_t             latest_ip_addr;    /* The src IP address of the last packet */
+        struct eg_ctrl_info  ctrl_info;
+        atomic_t             use;
+} eg_cache_entry;
+
+struct eg_cache_ops{
+        eg_cache_entry *(*add_entry)(struct k_message *msg, struct mpoa_client *client);
+        eg_cache_entry *(*get_by_cache_id)(uint32_t cache_id, struct mpoa_client *client);
+        eg_cache_entry *(*get_by_tag)(uint32_t cache_id, struct mpoa_client *client);
+        eg_cache_entry *(*get_by_vcc)(struct atm_vcc *vcc, struct mpoa_client *client);
+        eg_cache_entry *(*get_by_src_ip)(uint32_t ipaddr, struct mpoa_client *client);
+        void            (*put)(eg_cache_entry *entry);
+        void            (*remove_entry)(eg_cache_entry *entry, struct mpoa_client *client);
+        void            (*update)(eg_cache_entry *entry, uint16_t holding_time);
+        void            (*clear_expired)(struct mpoa_client *client);
+        void            (*destroy_cache)(struct mpoa_client *mpc);
+};
+
+
+/* Ingress cache entry states */
+
+#define INGRESS_REFRESHING 3
+#define INGRESS_RESOLVED   2
+#define INGRESS_RESOLVING  1
+#define INGRESS_INVALID    0
+
+/* VCC states */
+
+#define OPEN   1
+#define CLOSED 0 
+
+/* Egress cache entry states */
+
+#define EGRESS_RESOLVED 2
+#define EGRESS_PURGE    1
+#define EGRESS_INVALID  0
+
+#endif
diff --git a/net/atm/mpoa_proc.c b/net/atm/mpoa_proc.c
new file mode 100644
index 000000000000..60834b5a14d6
--- /dev/null
+++ b/net/atm/mpoa_proc.c
@@ -0,0 +1,305 @@
+#include <linux/config.h>
+
+#ifdef CONFIG_PROC_FS
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/string.h> 
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/proc_fs.h>
+#include <linux/time.h>
+#include <linux/seq_file.h>
+#include <asm/uaccess.h>
+#include <linux/atmmpc.h>
+#include <linux/atm.h>
+#include "mpc.h"
+#include "mpoa_caches.h"
+
+/*
+ * mpoa_proc.c: Implementation MPOA client's proc
+ * file system statistics 
+ */
+
+#if 1
+#define dprintk printk   /* debug */
+#else
+#define dprintk(format,args...)
+#endif
+
+#define STAT_FILE_NAME "mpc"     /* Our statistic file's name */
+
+extern struct mpoa_client *mpcs;
+extern struct proc_dir_entry *atm_proc_root;  /* from proc.c. */
+
+static int proc_mpc_open(struct inode *inode, struct file *file);
+static ssize_t proc_mpc_write(struct file *file, const char __user *buff,
+                              size_t nbytes, loff_t *ppos);
+
+static int parse_qos(const char *buff);
+
+/*
+ *   Define allowed FILE OPERATIONS
+ */
+static struct file_operations mpc_file_operations = {
+	.owner =	THIS_MODULE,
+	.open =		proc_mpc_open,
+	.read =		seq_read,
+	.llseek =	seq_lseek,
+	.write =	proc_mpc_write,
+	.release =	seq_release,
+};
+
+/*
+ * Returns the state of an ingress cache entry as a string
+ */
+static const char *ingress_state_string(int state){
+        switch(state) {
+	case INGRESS_RESOLVING:
+	        return "resolving  ";
+		break;
+	case INGRESS_RESOLVED:
+                return "resolved   ";
+		break;
+	case INGRESS_INVALID:
+	        return "invalid    ";
+		break;
+	case INGRESS_REFRESHING:
+	        return "refreshing ";
+		break;
+	default:
+	       return "";
+	}
+}
+
+/*
+ * Returns the state of an egress cache entry as a string
+ */
+static const char *egress_state_string(int state){
+        switch(state) {
+	case EGRESS_RESOLVED:
+	        return "resolved   ";
+		break;
+	case EGRESS_PURGE:
+                return "purge      ";
+		break;
+	case EGRESS_INVALID:
+	        return "invalid    ";
+		break;
+	default:
+	       return "";
+	}
+}
+
+/*
+ * FIXME: mpcs (and per-mpc lists) have no locking whatsoever.
+ */
+
+static void *mpc_start(struct seq_file *m, loff_t *pos)
+{
+	loff_t l = *pos;
+	struct mpoa_client *mpc;
+
+	if (!l--)
+		return SEQ_START_TOKEN;
+	for (mpc = mpcs; mpc; mpc = mpc->next)
+		if (!l--)
+			return mpc;
+	return NULL;
+}
+
+static void *mpc_next(struct seq_file *m, void *v, loff_t *pos)
+{
+	struct mpoa_client *p = v;
+	(*pos)++;
+	return v == SEQ_START_TOKEN ? mpcs : p->next;
+}
+
+static void mpc_stop(struct seq_file *m, void *v)
+{
+}
+
+/*
+ * READING function - called when the /proc/atm/mpoa file is read from.
+ */
+static int mpc_show(struct seq_file *m, void *v)
+{
+	struct mpoa_client *mpc = v;
+	unsigned char *temp;
+	int i;
+	in_cache_entry *in_entry;
+	eg_cache_entry *eg_entry;
+	struct timeval now;
+	unsigned char ip_string[16];
+
+	if (v == SEQ_START_TOKEN) {
+		atm_mpoa_disp_qos(m);
+		return 0;
+	}
+
+	seq_printf(m, "\nInterface %d:\n\n", mpc->dev_num);  
+	seq_printf(m, "Ingress Entries:\nIP address      State      Holding time  Packets fwded  VPI  VCI\n");
+	do_gettimeofday(&now);
+
+	for (in_entry = mpc->in_cache; in_entry; in_entry = in_entry->next) {
+		temp = (unsigned char *)&in_entry->ctrl_info.in_dst_ip;
+		sprintf(ip_string,"%d.%d.%d.%d", temp[0], temp[1], temp[2], temp[3]);
+		seq_printf(m, "%-16s%s%-14lu%-12u",
+			      ip_string,
+			      ingress_state_string(in_entry->entry_state),
+			      in_entry->ctrl_info.holding_time-(now.tv_sec-in_entry->tv.tv_sec),
+			      in_entry->packets_fwded);
+		if (in_entry->shortcut)
+			seq_printf(m, "   %-3d  %-3d",in_entry->shortcut->vpi,in_entry->shortcut->vci);
+		seq_printf(m, "\n");
+	}
+
+	seq_printf(m, "\n");
+	seq_printf(m, "Egress Entries:\nIngress MPC ATM addr\nCache-id        State      Holding time  Packets recvd  Latest IP addr   VPI VCI\n");
+	for (eg_entry = mpc->eg_cache; eg_entry; eg_entry = eg_entry->next) {
+		unsigned char *p = eg_entry->ctrl_info.in_MPC_data_ATM_addr;
+		for(i = 0; i < ATM_ESA_LEN; i++)
+			seq_printf(m, "%02x", p[i]);
+		seq_printf(m, "\n%-16lu%s%-14lu%-15u",
+			   (unsigned long)ntohl(eg_entry->ctrl_info.cache_id),
+			   egress_state_string(eg_entry->entry_state),
+			   (eg_entry->ctrl_info.holding_time-(now.tv_sec-eg_entry->tv.tv_sec)),
+			   eg_entry->packets_rcvd);
+		
+		/* latest IP address */
+		temp = (unsigned char *)&eg_entry->latest_ip_addr;
+		sprintf(ip_string, "%d.%d.%d.%d", temp[0], temp[1], temp[2], temp[3]);
+		seq_printf(m, "%-16s", ip_string);
+
+		if (eg_entry->shortcut)
+			seq_printf(m, " %-3d %-3d",eg_entry->shortcut->vpi,eg_entry->shortcut->vci);
+		seq_printf(m, "\n");
+	}
+	seq_printf(m, "\n");
+	return 0;
+}
+
+static struct seq_operations mpc_op = {
+	.start =	mpc_start,
+	.next =		mpc_next,
+	.stop =		mpc_stop,
+	.show =		mpc_show
+};
+
+static int proc_mpc_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &mpc_op);
+}
+
+static ssize_t proc_mpc_write(struct file *file, const char __user *buff,
+                              size_t nbytes, loff_t *ppos)
+{
+        char *page, *p;
+	unsigned len;
+
+        if (nbytes == 0)
+		return 0;
+
+        if (nbytes >= PAGE_SIZE)
+		nbytes = PAGE_SIZE-1;
+
+        page = (char *)__get_free_page(GFP_KERNEL);
+        if (!page)
+		return -ENOMEM;
+
+        for (p = page, len = 0; len < nbytes; p++, len++) {
+                if (get_user(*p, buff++)) {
+			free_page((unsigned long)page);
+			return -EFAULT;
+		}
+                if (*p == '\0' || *p == '\n')
+                        break;
+        }
+
+        *p = '\0';
+
+	if (!parse_qos(page))
+                printk("mpoa: proc_mpc_write: could not parse '%s'\n", page);
+
+        free_page((unsigned long)page);
+        
+        return len;
+}
+
+static int parse_qos(const char *buff)
+{
+        /* possible lines look like this
+         * add 130.230.54.142 tx=max_pcr,max_sdu rx=max_pcr,max_sdu
+         */
+        unsigned char ip[4]; 
+	int tx_pcr, tx_sdu, rx_pcr, rx_sdu;
+        uint32_t ipaddr;
+	struct atm_qos qos; 
+        
+        memset(&qos, 0, sizeof(struct atm_qos));
+
+	if (sscanf(buff, "del %hhu.%hhu.%hhu.%hhu",
+			ip, ip+1, ip+2, ip+3) == 4) {
+		ipaddr = *(uint32_t *)ip;
+		return atm_mpoa_delete_qos(atm_mpoa_search_qos(ipaddr));
+	}
+
+	if (sscanf(buff, "add %hhu.%hhu.%hhu.%hhu tx=%d,%d rx=tx",
+			ip, ip+1, ip+2, ip+3, &tx_pcr, &tx_sdu) == 6) {
+		rx_pcr = tx_pcr;
+		rx_sdu = tx_sdu;
+	} else if (sscanf(buff, "add %hhu.%hhu.%hhu.%hhu tx=%d,%d rx=%d,%d",
+		ip, ip+1, ip+2, ip+3, &tx_pcr, &tx_sdu, &rx_pcr, &rx_sdu) != 8)
+		return 0;
+
+        ipaddr = *(uint32_t *)ip;
+	qos.txtp.traffic_class = ATM_CBR;
+	qos.txtp.max_pcr = tx_pcr;
+	qos.txtp.max_sdu = tx_sdu;
+	qos.rxtp.traffic_class = ATM_CBR;
+	qos.rxtp.max_pcr = rx_pcr;
+	qos.rxtp.max_sdu = rx_sdu;
+        qos.aal = ATM_AAL5;
+	dprintk("mpoa: mpoa_proc.c: parse_qos(): setting qos paramameters to tx=%d,%d rx=%d,%d\n",
+		qos.txtp.max_pcr,
+		qos.txtp.max_sdu,
+		qos.rxtp.max_pcr,
+		qos.rxtp.max_sdu
+		);
+
+	atm_mpoa_add_qos(ipaddr, &qos);
+	return 1;
+}
+
+/*
+ * INITIALIZATION function - called when module is initialized/loaded.
+ */
+int mpc_proc_init(void)
+{
+	struct proc_dir_entry *p;
+
+        p = create_proc_entry(STAT_FILE_NAME, 0, atm_proc_root);
+	if (!p) {
+                printk(KERN_ERR "Unable to initialize /proc/atm/%s\n", STAT_FILE_NAME);
+                return -ENOMEM;
+        }
+	p->proc_fops = &mpc_file_operations;
+	p->owner = THIS_MODULE;
+	return 0;
+}
+
+/*
+ * DELETING function - called when module is removed.
+ */
+void mpc_proc_clean(void)
+{
+	remove_proc_entry(STAT_FILE_NAME,atm_proc_root);
+}
+
+
+#endif /* CONFIG_PROC_FS */
+
+
+
+
+
+
diff --git a/net/atm/pppoatm.c b/net/atm/pppoatm.c
new file mode 100644
index 000000000000..58f4a2b5aebe
--- /dev/null
+++ b/net/atm/pppoatm.c
@@ -0,0 +1,369 @@
+/* net/atm/pppoatm.c - RFC2364 PPP over ATM/AAL5 */
+
+/* Copyright 1999-2000 by Mitchell Blank Jr */
+/* Based on clip.c; 1995-1999 by Werner Almesberger, EPFL LRC/ICA */
+/* And on ppp_async.c; Copyright 1999 Paul Mackerras */
+/* And help from Jens Axboe */
+
+/*
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version
+ *  2 of the License, or (at your option) any later version.
+ *
+ * This driver provides the encapsulation and framing for sending
+ * and receiving PPP frames in ATM AAL5 PDUs.
+ */
+
+/*
+ * One shortcoming of this driver is that it does not comply with
+ * section 8 of RFC2364 - we are supposed to detect a change
+ * in encapsulation and immediately abort the connection (in order
+ * to avoid a black-hole being created if our peer loses state
+ * and changes encapsulation unilaterally.  However, since the
+ * ppp_generic layer actually does the decapsulation, we need
+ * a way of notifying it when we _think_ there might be a problem)
+ * There's two cases:
+ *   1.	LLC-encapsulation was missing when it was enabled.  In
+ *	this case, we should tell the upper layer "tear down
+ *	this session if this skb looks ok to you"
+ *   2.	LLC-encapsulation was present when it was disabled.  Then
+ *	we need to tell the upper layer "this packet may be
+ *	ok, but if its in error tear down the session"
+ * These hooks are not yet available in ppp_generic
+ */
+
+#include <linux/module.h>
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/skbuff.h>
+#include <linux/atm.h>
+#include <linux/atmdev.h>
+#include <linux/ppp_defs.h>
+#include <linux/if_ppp.h>
+#include <linux/ppp_channel.h>
+#include <linux/atmppp.h>
+
+#include "common.h"
+
+#if 0
+#define DPRINTK(format, args...) \
+	printk(KERN_DEBUG "pppoatm: " format, ##args)
+#else
+#define DPRINTK(format, args...)
+#endif
+
+enum pppoatm_encaps {
+	e_autodetect = PPPOATM_ENCAPS_AUTODETECT,
+	e_vc = PPPOATM_ENCAPS_VC,
+	e_llc = PPPOATM_ENCAPS_LLC,
+};
+
+struct pppoatm_vcc {
+	struct atm_vcc	*atmvcc;	/* VCC descriptor */
+	void (*old_push)(struct atm_vcc *, struct sk_buff *);
+	void (*old_pop)(struct atm_vcc *, struct sk_buff *);
+					/* keep old push/pop for detaching */
+	enum pppoatm_encaps encaps;
+	int flags;			/* SC_COMP_PROT - compress protocol */
+	struct ppp_channel chan;	/* interface to generic ppp layer */
+	struct tasklet_struct wakeup_tasklet;
+};
+
+/*
+ * Header used for LLC Encapsulated PPP (4 bytes) followed by the LCP protocol
+ * ID (0xC021) used in autodetection
+ */
+static const unsigned char pppllc[6] = { 0xFE, 0xFE, 0x03, 0xCF, 0xC0, 0x21 };
+#define LLC_LEN		(4)
+
+static inline struct pppoatm_vcc *atmvcc_to_pvcc(const struct atm_vcc *atmvcc)
+{
+	return (struct pppoatm_vcc *) (atmvcc->user_back);
+}
+
+static inline struct pppoatm_vcc *chan_to_pvcc(const struct ppp_channel *chan)
+{
+	return (struct pppoatm_vcc *) (chan->private);
+}
+
+/*
+ * We can't do this directly from our _pop handler, since the ppp code
+ * doesn't want to be called in interrupt context, so we do it from
+ * a tasklet
+ */
+static void pppoatm_wakeup_sender(unsigned long arg)
+{
+	ppp_output_wakeup((struct ppp_channel *) arg);
+}
+
+/*
+ * This gets called every time the ATM card has finished sending our
+ * skb.  The ->old_pop will take care up normal atm flow control,
+ * but we also need to wake up the device if we blocked it
+ */
+static void pppoatm_pop(struct atm_vcc *atmvcc, struct sk_buff *skb)
+{
+	struct pppoatm_vcc *pvcc = atmvcc_to_pvcc(atmvcc);
+	pvcc->old_pop(atmvcc, skb);
+	/*
+	 * We don't really always want to do this since it's
+	 * really inefficient - it would be much better if we could
+	 * test if we had actually throttled the generic layer.
+	 * Unfortunately then there would be a nasty SMP race where
+	 * we could clear that flag just as we refuse another packet.
+	 * For now we do the safe thing.
+	 */
+	tasklet_schedule(&pvcc->wakeup_tasklet);
+}
+
+/*
+ * Unbind from PPP - currently we only do this when closing the socket,
+ * but we could put this into an ioctl if need be
+ */
+static void pppoatm_unassign_vcc(struct atm_vcc *atmvcc)
+{
+	struct pppoatm_vcc *pvcc;
+	pvcc = atmvcc_to_pvcc(atmvcc);
+	atmvcc->push = pvcc->old_push;
+	atmvcc->pop = pvcc->old_pop;
+	tasklet_kill(&pvcc->wakeup_tasklet);
+	ppp_unregister_channel(&pvcc->chan);
+	atmvcc->user_back = NULL;
+	kfree(pvcc);
+	/* Gee, I hope we have the big kernel lock here... */
+	module_put(THIS_MODULE);
+}
+
+/* Called when an AAL5 PDU comes in */
+static void pppoatm_push(struct atm_vcc *atmvcc, struct sk_buff *skb)
+{
+	struct pppoatm_vcc *pvcc = atmvcc_to_pvcc(atmvcc);
+	DPRINTK("pppoatm push\n");
+	if (skb == NULL) {			/* VCC was closed */
+		DPRINTK("removing ATMPPP VCC %p\n", pvcc);
+		pppoatm_unassign_vcc(atmvcc);
+		atmvcc->push(atmvcc, NULL);	/* Pass along bad news */
+		return;
+	}
+	atm_return(atmvcc, skb->truesize);
+	switch (pvcc->encaps) {
+	case e_llc:
+		if (skb->len < LLC_LEN ||
+		    memcmp(skb->data, pppllc, LLC_LEN))
+			goto error;
+		skb_pull(skb, LLC_LEN);
+		break;
+	case e_autodetect:
+		if (pvcc->chan.ppp == NULL) {	/* Not bound yet! */
+			kfree_skb(skb);
+			return;
+		}
+		if (skb->len >= sizeof(pppllc) &&
+		    !memcmp(skb->data, pppllc, sizeof(pppllc))) {
+			pvcc->encaps = e_llc;
+			skb_pull(skb, LLC_LEN);
+			break;
+		}
+		if (skb->len >= (sizeof(pppllc) - LLC_LEN) &&
+		    !memcmp(skb->data, &pppllc[LLC_LEN],
+		    sizeof(pppllc) - LLC_LEN)) {
+			pvcc->encaps = e_vc;
+			pvcc->chan.mtu += LLC_LEN;
+			break;
+		}
+		DPRINTK("(unit %d): Couldn't autodetect yet "
+		    "(skb: %02X %02X %02X %02X %02X %02X)\n",
+		    pvcc->chan.unit,
+		    skb->data[0], skb->data[1], skb->data[2],
+		    skb->data[3], skb->data[4], skb->data[5]);
+		goto error;
+	case e_vc:
+		break;
+	}
+	ppp_input(&pvcc->chan, skb);
+	return;
+    error:
+	kfree_skb(skb);
+	ppp_input_error(&pvcc->chan, 0);
+}
+
+/*
+ * Called by the ppp_generic.c to send a packet - returns true if packet
+ * was accepted.  If we return false, then it's our job to call
+ * ppp_output_wakeup(chan) when we're feeling more up to it.
+ * Note that in the ENOMEM case (as opposed to the !atm_may_send case)
+ * we should really drop the packet, but the generic layer doesn't
+ * support this yet.  We just return 'DROP_PACKET' which we actually define
+ * as success, just to be clear what we're really doing.
+ */
+#define DROP_PACKET 1
+static int pppoatm_send(struct ppp_channel *chan, struct sk_buff *skb)
+{
+	struct pppoatm_vcc *pvcc = chan_to_pvcc(chan);
+	ATM_SKB(skb)->vcc = pvcc->atmvcc;
+	DPRINTK("(unit %d): pppoatm_send (skb=0x%p, vcc=0x%p)\n",
+	    pvcc->chan.unit, skb, pvcc->atmvcc);
+	if (skb->data[0] == '\0' && (pvcc->flags & SC_COMP_PROT))
+		(void) skb_pull(skb, 1);
+	switch (pvcc->encaps) {		/* LLC encapsulation needed */
+	case e_llc:
+		if (skb_headroom(skb) < LLC_LEN) {
+			struct sk_buff *n;
+			n = skb_realloc_headroom(skb, LLC_LEN);
+			if (n != NULL &&
+			    !atm_may_send(pvcc->atmvcc, n->truesize)) {
+				kfree_skb(n);
+				goto nospace;
+			}
+			kfree_skb(skb);
+			if ((skb = n) == NULL)
+				return DROP_PACKET;
+		} else if (!atm_may_send(pvcc->atmvcc, skb->truesize))
+			goto nospace;
+		memcpy(skb_push(skb, LLC_LEN), pppllc, LLC_LEN);
+		break;
+	case e_vc:
+		if (!atm_may_send(pvcc->atmvcc, skb->truesize))
+			goto nospace;
+		break;
+	case e_autodetect:
+		DPRINTK("(unit %d): Trying to send without setting encaps!\n",
+		    pvcc->chan.unit);
+		kfree_skb(skb);
+		return 1;
+	}
+
+	atomic_add(skb->truesize, &sk_atm(ATM_SKB(skb)->vcc)->sk_wmem_alloc);
+	ATM_SKB(skb)->atm_options = ATM_SKB(skb)->vcc->atm_options;
+	DPRINTK("(unit %d): atm_skb(%p)->vcc(%p)->dev(%p)\n",
+	    pvcc->chan.unit, skb, ATM_SKB(skb)->vcc,
+	    ATM_SKB(skb)->vcc->dev);
+	return ATM_SKB(skb)->vcc->send(ATM_SKB(skb)->vcc, skb)
+	    ? DROP_PACKET : 1;
+    nospace:
+	/*
+	 * We don't have space to send this SKB now, but we might have
+	 * already applied SC_COMP_PROT compression, so may need to undo
+	 */
+	if ((pvcc->flags & SC_COMP_PROT) && skb_headroom(skb) > 0 &&
+	    skb->data[-1] == '\0')
+		(void) skb_push(skb, 1);
+	return 0;
+}
+
+/* This handles ioctls sent to the /dev/ppp interface */
+static int pppoatm_devppp_ioctl(struct ppp_channel *chan, unsigned int cmd,
+	unsigned long arg)
+{
+	switch (cmd) {
+	case PPPIOCGFLAGS:
+		return put_user(chan_to_pvcc(chan)->flags, (int __user *) arg)
+		    ? -EFAULT : 0;
+	case PPPIOCSFLAGS:
+		return get_user(chan_to_pvcc(chan)->flags, (int __user *) arg)
+		    ? -EFAULT : 0;
+	}
+	return -ENOTTY;
+}
+
+static /*const*/ struct ppp_channel_ops pppoatm_ops = {
+	.start_xmit = pppoatm_send,
+	.ioctl = pppoatm_devppp_ioctl,
+};
+
+static int pppoatm_assign_vcc(struct atm_vcc *atmvcc, void __user *arg)
+{
+	struct atm_backend_ppp be;
+	struct pppoatm_vcc *pvcc;
+	int err;
+	/*
+	 * Each PPPoATM instance has its own tasklet - this is just a
+	 * prototypical one used to initialize them
+	 */
+	static const DECLARE_TASKLET(tasklet_proto, pppoatm_wakeup_sender, 0);
+	if (copy_from_user(&be, arg, sizeof be))
+		return -EFAULT;
+	if (be.encaps != PPPOATM_ENCAPS_AUTODETECT &&
+	    be.encaps != PPPOATM_ENCAPS_VC && be.encaps != PPPOATM_ENCAPS_LLC)
+		return -EINVAL;
+	pvcc = kmalloc(sizeof(*pvcc), GFP_KERNEL);
+	if (pvcc == NULL)
+		return -ENOMEM;
+	memset(pvcc, 0, sizeof(*pvcc));
+	pvcc->atmvcc = atmvcc;
+	pvcc->old_push = atmvcc->push;
+	pvcc->old_pop = atmvcc->pop;
+	pvcc->encaps = (enum pppoatm_encaps) be.encaps;
+	pvcc->chan.private = pvcc;
+	pvcc->chan.ops = &pppoatm_ops;
+	pvcc->chan.mtu = atmvcc->qos.txtp.max_sdu - PPP_HDRLEN -
+	    (be.encaps == e_vc ? 0 : LLC_LEN);
+	pvcc->wakeup_tasklet = tasklet_proto;
+	pvcc->wakeup_tasklet.data = (unsigned long) &pvcc->chan;
+	if ((err = ppp_register_channel(&pvcc->chan)) != 0) {
+		kfree(pvcc);
+		return err;
+	}
+	atmvcc->user_back = pvcc;
+	atmvcc->push = pppoatm_push;
+	atmvcc->pop = pppoatm_pop;
+	__module_get(THIS_MODULE);
+	return 0;
+}
+
+/*
+ * This handles ioctls actually performed on our vcc - we must return
+ * -ENOIOCTLCMD for any unrecognized ioctl
+ */
+static int pppoatm_ioctl(struct socket *sock, unsigned int cmd,
+	unsigned long arg)
+{
+	struct atm_vcc *atmvcc = ATM_SD(sock);
+	void __user *argp = (void __user *)arg;
+
+	if (cmd != ATM_SETBACKEND && atmvcc->push != pppoatm_push)
+		return -ENOIOCTLCMD;
+	switch (cmd) {
+	case ATM_SETBACKEND: {
+		atm_backend_t b;
+		if (get_user(b, (atm_backend_t __user *) argp))
+			return -EFAULT;
+		if (b != ATM_BACKEND_PPP)
+			return -ENOIOCTLCMD;
+		if (!capable(CAP_NET_ADMIN))
+			return -EPERM;
+		return pppoatm_assign_vcc(atmvcc, argp);
+		}
+	case PPPIOCGCHAN:
+		return put_user(ppp_channel_index(&atmvcc_to_pvcc(atmvcc)->
+		    chan), (int __user *) argp) ? -EFAULT : 0;
+	case PPPIOCGUNIT:
+		return put_user(ppp_unit_number(&atmvcc_to_pvcc(atmvcc)->
+		    chan), (int __user *) argp) ? -EFAULT : 0;
+	}
+	return -ENOIOCTLCMD;
+}
+
+static struct atm_ioctl pppoatm_ioctl_ops = {
+	.owner	= THIS_MODULE,
+	.ioctl	= pppoatm_ioctl,
+};
+
+static int __init pppoatm_init(void)
+{
+	register_atm_ioctl(&pppoatm_ioctl_ops);
+	return 0;
+}
+
+static void __exit pppoatm_exit(void)
+{
+	deregister_atm_ioctl(&pppoatm_ioctl_ops);
+}
+
+module_init(pppoatm_init);
+module_exit(pppoatm_exit);
+
+MODULE_AUTHOR("Mitchell Blank Jr <mitch@sfgoth.com>");
+MODULE_DESCRIPTION("RFC2364 PPP over ATM/AAL5");
+MODULE_LICENSE("GPL");
diff --git a/net/atm/proc.c b/net/atm/proc.c
new file mode 100644
index 000000000000..4041054e5282
--- /dev/null
+++ b/net/atm/proc.c
@@ -0,0 +1,514 @@
+/* net/atm/proc.c - ATM /proc interface
+ *
+ * Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA
+ *
+ * seq_file api usage by romieu@fr.zoreil.com
+ *
+ * Evaluating the efficiency of the whole thing if left as an exercise to
+ * the reader.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h> /* for EXPORT_SYMBOL */
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/mm.h>
+#include <linux/fs.h>
+#include <linux/stat.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/errno.h>
+#include <linux/atm.h>
+#include <linux/atmdev.h>
+#include <linux/netdevice.h>
+#include <linux/atmclip.h>
+#include <linux/init.h> /* for __init */
+#include <net/atmclip.h>
+#include <asm/uaccess.h>
+#include <asm/atomic.h>
+#include <asm/param.h> /* for HZ */
+#include "resources.h"
+#include "common.h" /* atm_proc_init prototype */
+#include "signaling.h" /* to get sigd - ugly too */
+
+static ssize_t proc_dev_atm_read(struct file *file,char __user *buf,size_t count,
+    loff_t *pos);
+
+static struct file_operations proc_atm_dev_ops = {
+	.owner =	THIS_MODULE,
+	.read =		proc_dev_atm_read,
+};
+
+static void add_stats(struct seq_file *seq, const char *aal,
+  const struct k_atm_aal_stats *stats)
+{
+	seq_printf(seq, "%s ( %d %d %d %d %d )", aal,
+	    atomic_read(&stats->tx),atomic_read(&stats->tx_err),
+	    atomic_read(&stats->rx),atomic_read(&stats->rx_err),
+	    atomic_read(&stats->rx_drop));
+}
+
+static void atm_dev_info(struct seq_file *seq, const struct atm_dev *dev)
+{
+	int i;
+
+	seq_printf(seq, "%3d %-8s", dev->number, dev->type);
+	for (i = 0; i < ESI_LEN; i++)
+		seq_printf(seq, "%02x", dev->esi[i]);
+	seq_puts(seq, "  ");
+	add_stats(seq, "0", &dev->stats.aal0);
+	seq_puts(seq, "  ");
+	add_stats(seq, "5", &dev->stats.aal5);
+	seq_printf(seq, "\t[%d]", atomic_read(&dev->refcnt));
+	seq_putc(seq, '\n');
+}
+
+struct vcc_state {
+	int bucket;
+	struct sock *sk;
+	int family;
+};
+
+static inline int compare_family(struct sock *sk, int family)
+{
+	return !family || (sk->sk_family == family);
+}
+
+static int __vcc_walk(struct sock **sock, int family, int *bucket, loff_t l)
+{
+	struct sock *sk = *sock;
+
+	if (sk == (void *)1) {
+		for (*bucket = 0; *bucket < VCC_HTABLE_SIZE; ++*bucket) {
+			struct hlist_head *head = &vcc_hash[*bucket];
+
+			sk = hlist_empty(head) ? NULL : __sk_head(head);
+			if (sk)
+				break;
+		}
+		l--;
+	} 
+try_again:
+	for (; sk; sk = sk_next(sk)) {
+		l -= compare_family(sk, family);
+		if (l < 0)
+			goto out;
+	}
+	if (!sk && ++*bucket < VCC_HTABLE_SIZE) {
+		sk = sk_head(&vcc_hash[*bucket]);
+		goto try_again;
+	}
+	sk = (void *)1;
+out:
+	*sock = sk;
+	return (l < 0);
+}
+
+static inline void *vcc_walk(struct vcc_state *state, loff_t l)
+{
+	return __vcc_walk(&state->sk, state->family, &state->bucket, l) ?
+	       state : NULL;
+}
+
+static int __vcc_seq_open(struct inode *inode, struct file *file,
+	int family, struct seq_operations *ops)
+{
+	struct vcc_state *state;
+	struct seq_file *seq;
+	int rc = -ENOMEM;
+
+	state = kmalloc(sizeof(*state), GFP_KERNEL);
+	if (!state)
+		goto out;
+
+	rc = seq_open(file, ops);
+	if (rc)
+		goto out_kfree;
+
+	state->family = family;
+
+	seq = file->private_data;
+	seq->private = state;
+out:
+	return rc;
+out_kfree:
+	kfree(state);
+	goto out;
+}
+
+static int vcc_seq_release(struct inode *inode, struct file *file)
+{
+	return seq_release_private(inode, file);
+}
+
+static void *vcc_seq_start(struct seq_file *seq, loff_t *pos)
+{
+	struct vcc_state *state = seq->private;
+	loff_t left = *pos;
+
+	read_lock(&vcc_sklist_lock);
+	state->sk = (void *)1;
+	return left ? vcc_walk(state, left) : (void *)1;
+}
+
+static void vcc_seq_stop(struct seq_file *seq, void *v)
+{
+	read_unlock(&vcc_sklist_lock);
+}
+
+static void *vcc_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	struct vcc_state *state = seq->private;
+
+	v = vcc_walk(state, 1);
+	*pos += !!PTR_ERR(v);
+	return v;
+}
+
+static void pvc_info(struct seq_file *seq, struct atm_vcc *vcc)
+{
+	static const char *class_name[] = { "off","UBR","CBR","VBR","ABR" };
+	static const char *aal_name[] = {
+		"---",	"1",	"2",	"3/4",	/*  0- 3 */
+		"???",	"5",	"???",	"???",	/*  4- 7 */
+		"???",	"???",	"???",	"???",	/*  8-11 */
+		"???",	"0",	"???",	"???"};	/* 12-15 */
+
+	seq_printf(seq, "%3d %3d %5d %-3s %7d %-5s %7d %-6s",
+	    vcc->dev->number,vcc->vpi,vcc->vci,
+	    vcc->qos.aal >= sizeof(aal_name)/sizeof(aal_name[0]) ? "err" :
+	    aal_name[vcc->qos.aal],vcc->qos.rxtp.min_pcr,
+	    class_name[vcc->qos.rxtp.traffic_class],vcc->qos.txtp.min_pcr,
+	    class_name[vcc->qos.txtp.traffic_class]);
+	if (test_bit(ATM_VF_IS_CLIP, &vcc->flags)) {
+		struct clip_vcc *clip_vcc = CLIP_VCC(vcc);
+		struct net_device *dev;
+
+		dev = clip_vcc->entry ? clip_vcc->entry->neigh->dev : NULL;
+		seq_printf(seq, "CLIP, Itf:%s, Encap:",
+		    dev ? dev->name : "none?");
+		seq_printf(seq, "%s", clip_vcc->encap ? "LLC/SNAP" : "None");
+	}
+	seq_putc(seq, '\n');
+}
+
+static const char *vcc_state(struct atm_vcc *vcc)
+{
+	static const char *map[] = { ATM_VS2TXT_MAP };
+
+	return map[ATM_VF2VS(vcc->flags)];
+}
+
+static void vcc_info(struct seq_file *seq, struct atm_vcc *vcc)
+{
+	struct sock *sk = sk_atm(vcc);
+
+	seq_printf(seq, "%p ", vcc);
+	if (!vcc->dev)
+		seq_printf(seq, "Unassigned    ");
+	else 
+		seq_printf(seq, "%3d %3d %5d ", vcc->dev->number, vcc->vpi,
+			vcc->vci);
+	switch (sk->sk_family) {
+		case AF_ATMPVC:
+			seq_printf(seq, "PVC");
+			break;
+		case AF_ATMSVC:
+			seq_printf(seq, "SVC");
+			break;
+		default:
+			seq_printf(seq, "%3d", sk->sk_family);
+	}
+	seq_printf(seq, " %04lx  %5d %7d/%7d %7d/%7d [%d]\n", vcc->flags, sk->sk_err,
+		  atomic_read(&sk->sk_wmem_alloc), sk->sk_sndbuf,
+		  atomic_read(&sk->sk_rmem_alloc), sk->sk_rcvbuf,
+		  atomic_read(&sk->sk_refcnt));
+}
+
+static void svc_info(struct seq_file *seq, struct atm_vcc *vcc)
+{
+	if (!vcc->dev)
+		seq_printf(seq, sizeof(void *) == 4 ?
+			   "N/A@%p%10s" : "N/A@%p%2s", vcc, "");
+	else
+		seq_printf(seq, "%3d %3d %5d         ",
+			   vcc->dev->number, vcc->vpi, vcc->vci);
+	seq_printf(seq, "%-10s ", vcc_state(vcc));
+	seq_printf(seq, "%s%s", vcc->remote.sas_addr.pub,
+	    *vcc->remote.sas_addr.pub && *vcc->remote.sas_addr.prv ? "+" : "");
+	if (*vcc->remote.sas_addr.prv) {
+		int i;
+
+		for (i = 0; i < ATM_ESA_LEN; i++)
+			seq_printf(seq, "%02x", vcc->remote.sas_addr.prv[i]);
+	}
+	seq_putc(seq, '\n');
+}
+
+static int atm_dev_seq_show(struct seq_file *seq, void *v)
+{
+	static char atm_dev_banner[] =
+		"Itf Type    ESI/\"MAC\"addr "
+		"AAL(TX,err,RX,err,drop) ...               [refcnt]\n";
+ 
+	if (v == (void *)1)
+		seq_puts(seq, atm_dev_banner);
+	else {
+		struct atm_dev *dev = list_entry(v, struct atm_dev, dev_list);
+
+		atm_dev_info(seq, dev);
+	}
+ 	return 0;
+}
+ 
+static struct seq_operations atm_dev_seq_ops = {
+	.start	= atm_dev_seq_start,
+	.next	= atm_dev_seq_next,
+	.stop	= atm_dev_seq_stop,
+	.show	= atm_dev_seq_show,
+};
+ 
+static int atm_dev_seq_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &atm_dev_seq_ops);
+}
+ 
+static struct file_operations devices_seq_fops = {
+	.open		= atm_dev_seq_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_release,
+};
+
+static int pvc_seq_show(struct seq_file *seq, void *v)
+{
+	static char atm_pvc_banner[] = 
+		"Itf VPI VCI   AAL RX(PCR,Class) TX(PCR,Class)\n";
+
+	if (v == (void *)1)
+		seq_puts(seq, atm_pvc_banner);
+	else {
+		struct vcc_state *state = seq->private;
+		struct atm_vcc *vcc = atm_sk(state->sk);
+
+		pvc_info(seq, vcc);
+	}
+	return 0;
+}
+
+static struct seq_operations pvc_seq_ops = {
+	.start	= vcc_seq_start,
+	.next	= vcc_seq_next,
+	.stop	= vcc_seq_stop,
+	.show	= pvc_seq_show,
+};
+
+static int pvc_seq_open(struct inode *inode, struct file *file)
+{
+	return __vcc_seq_open(inode, file, PF_ATMPVC, &pvc_seq_ops);
+}
+
+static struct file_operations pvc_seq_fops = {
+	.open		= pvc_seq_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= vcc_seq_release,
+};
+
+static int vcc_seq_show(struct seq_file *seq, void *v)
+{
+ 	if (v == (void *)1) {
+ 		seq_printf(seq, sizeof(void *) == 4 ? "%-8s%s" : "%-16s%s",
+ 			"Address ", "Itf VPI VCI   Fam Flags Reply "
+ 			"Send buffer     Recv buffer      [refcnt]\n");
+ 	} else {
+ 		struct vcc_state *state = seq->private;
+ 		struct atm_vcc *vcc = atm_sk(state->sk);
+  
+ 		vcc_info(seq, vcc);
+ 	}
+  	return 0;
+}
+  
+static struct seq_operations vcc_seq_ops = {
+ 	.start	= vcc_seq_start,
+ 	.next	= vcc_seq_next,
+ 	.stop	= vcc_seq_stop,
+ 	.show	= vcc_seq_show,
+};
+ 
+static int vcc_seq_open(struct inode *inode, struct file *file)
+{
+ 	return __vcc_seq_open(inode, file, 0, &vcc_seq_ops);
+}
+ 
+static struct file_operations vcc_seq_fops = {
+	.open		= vcc_seq_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= vcc_seq_release,
+};
+
+static int svc_seq_show(struct seq_file *seq, void *v)
+{
+	static char atm_svc_banner[] = 
+		"Itf VPI VCI           State      Remote\n";
+
+	if (v == (void *)1)
+		seq_puts(seq, atm_svc_banner);
+	else {
+		struct vcc_state *state = seq->private;
+		struct atm_vcc *vcc = atm_sk(state->sk);
+
+		svc_info(seq, vcc);
+	}
+	return 0;
+}
+
+static struct seq_operations svc_seq_ops = {
+	.start	= vcc_seq_start,
+	.next	= vcc_seq_next,
+	.stop	= vcc_seq_stop,
+	.show	= svc_seq_show,
+};
+
+static int svc_seq_open(struct inode *inode, struct file *file)
+{
+	return __vcc_seq_open(inode, file, PF_ATMSVC, &svc_seq_ops);
+}
+
+static struct file_operations svc_seq_fops = {
+	.open		= svc_seq_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= vcc_seq_release,
+};
+
+static ssize_t proc_dev_atm_read(struct file *file, char __user *buf,
+				 size_t count, loff_t *pos)
+{
+	struct atm_dev *dev;
+	unsigned long page;
+	int length;
+
+	if (count == 0) return 0;
+	page = get_zeroed_page(GFP_KERNEL);
+	if (!page) return -ENOMEM;
+	dev = PDE(file->f_dentry->d_inode)->data;
+	if (!dev->ops->proc_read)
+		length = -EINVAL;
+	else {
+		length = dev->ops->proc_read(dev,pos,(char *) page);
+		if (length > count) length = -EINVAL;
+	}
+	if (length >= 0) {
+		if (copy_to_user(buf,(char *) page,length)) length = -EFAULT;
+		(*pos)++;
+	}
+	free_page(page);
+	return length;
+}
+
+
+struct proc_dir_entry *atm_proc_root;
+EXPORT_SYMBOL(atm_proc_root);
+
+
+int atm_proc_dev_register(struct atm_dev *dev)
+{
+	int digits,num;
+	int error;
+
+	/* No proc info */
+	if (!dev->ops->proc_read)
+		return 0;
+
+	error = -ENOMEM;
+	digits = 0;
+	for (num = dev->number; num; num /= 10) digits++;
+	if (!digits) digits++;
+
+	dev->proc_name = kmalloc(strlen(dev->type) + digits + 2, GFP_KERNEL);
+	if (!dev->proc_name)
+		goto err_out;
+	sprintf(dev->proc_name,"%s:%d",dev->type, dev->number);
+
+	dev->proc_entry = create_proc_entry(dev->proc_name, 0, atm_proc_root);
+	if (!dev->proc_entry)
+		goto err_free_name;
+	dev->proc_entry->data = dev;
+	dev->proc_entry->proc_fops = &proc_atm_dev_ops;
+	dev->proc_entry->owner = THIS_MODULE;
+	return 0;
+err_free_name:
+	kfree(dev->proc_name);
+err_out:
+	return error;
+}
+
+
+void atm_proc_dev_deregister(struct atm_dev *dev)
+{
+	if (!dev->ops->proc_read)
+		return;
+
+	remove_proc_entry(dev->proc_name, atm_proc_root);
+	kfree(dev->proc_name);
+}
+
+static struct atm_proc_entry {
+	char *name;
+	struct file_operations *proc_fops;
+	struct proc_dir_entry *dirent;
+} atm_proc_ents[] = {
+	{ .name = "devices",	.proc_fops = &devices_seq_fops },
+	{ .name = "pvc",	.proc_fops = &pvc_seq_fops },
+	{ .name = "svc",	.proc_fops = &svc_seq_fops },
+	{ .name = "vc",		.proc_fops = &vcc_seq_fops },
+	{ .name = NULL,		.proc_fops = NULL }
+};
+
+static void atm_proc_dirs_remove(void)
+{
+	static struct atm_proc_entry *e;
+
+	for (e = atm_proc_ents; e->name; e++) {
+		if (e->dirent) 
+			remove_proc_entry(e->name, atm_proc_root);
+	}
+	remove_proc_entry("net/atm", NULL);
+}
+
+int __init atm_proc_init(void)
+{
+	static struct atm_proc_entry *e;
+	int ret;
+
+	atm_proc_root = proc_mkdir("net/atm",NULL);
+	if (!atm_proc_root)
+		goto err_out;
+	for (e = atm_proc_ents; e->name; e++) {
+		struct proc_dir_entry *dirent;
+
+		dirent = create_proc_entry(e->name, S_IRUGO, atm_proc_root);
+		if (!dirent)
+			goto err_out_remove;
+		dirent->proc_fops = e->proc_fops;
+		dirent->owner = THIS_MODULE;
+		e->dirent = dirent;
+	}
+	ret = 0;
+out:
+	return ret;
+
+err_out_remove:
+	atm_proc_dirs_remove();
+err_out:
+	ret = -ENOMEM;
+	goto out;
+}
+
+void __exit atm_proc_exit(void)
+{
+	atm_proc_dirs_remove();
+}
diff --git a/net/atm/protocols.h b/net/atm/protocols.h
new file mode 100644
index 000000000000..acdfc856222d
--- /dev/null
+++ b/net/atm/protocols.h
@@ -0,0 +1,13 @@
+/* net/atm/protocols.h - ATM protocol handler entry points */
+
+/* Written 1995-1997 by Werner Almesberger, EPFL LRC */
+
+
+#ifndef NET_ATM_PROTOCOLS_H
+#define NET_ATM_PROTOCOLS_H
+
+int atm_init_aal0(struct atm_vcc *vcc);	/* "raw" AAL0 */
+int atm_init_aal34(struct atm_vcc *vcc);/* "raw" AAL3/4 transport */
+int atm_init_aal5(struct atm_vcc *vcc);	/* "raw" AAL5 transport */
+
+#endif
diff --git a/net/atm/pvc.c b/net/atm/pvc.c
new file mode 100644
index 000000000000..2684a92da22b
--- /dev/null
+++ b/net/atm/pvc.c
@@ -0,0 +1,155 @@
+/* net/atm/pvc.c - ATM PVC sockets */
+
+/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
+
+
+#include <linux/config.h>
+#include <linux/net.h>		/* struct socket, struct proto_ops */
+#include <linux/atm.h>		/* ATM stuff */
+#include <linux/atmdev.h>	/* ATM devices */
+#include <linux/errno.h>	/* error codes */
+#include <linux/kernel.h>	/* printk */
+#include <linux/init.h>
+#include <linux/skbuff.h>
+#include <linux/bitops.h>
+#include <net/sock.h>		/* for sock_no_* */
+
+#include "resources.h"		/* devs and vccs */
+#include "common.h"		/* common for PVCs and SVCs */
+
+
+static int pvc_shutdown(struct socket *sock,int how)
+{
+	return 0;
+}
+
+
+static int pvc_bind(struct socket *sock,struct sockaddr *sockaddr,
+    int sockaddr_len)
+{
+	struct sock *sk = sock->sk;
+	struct sockaddr_atmpvc *addr;
+	struct atm_vcc *vcc;
+	int error;
+
+	if (sockaddr_len != sizeof(struct sockaddr_atmpvc)) return -EINVAL;
+	addr = (struct sockaddr_atmpvc *) sockaddr;
+	if (addr->sap_family != AF_ATMPVC) return -EAFNOSUPPORT;
+	lock_sock(sk);
+	vcc = ATM_SD(sock);
+	if (!test_bit(ATM_VF_HASQOS, &vcc->flags)) {
+		error = -EBADFD;
+		goto out;
+	}
+	if (test_bit(ATM_VF_PARTIAL,&vcc->flags)) {
+		if (vcc->vpi != ATM_VPI_UNSPEC) addr->sap_addr.vpi = vcc->vpi;
+		if (vcc->vci != ATM_VCI_UNSPEC) addr->sap_addr.vci = vcc->vci;
+	}
+	error = vcc_connect(sock, addr->sap_addr.itf, addr->sap_addr.vpi,
+			    addr->sap_addr.vci);
+out:
+	release_sock(sk);
+	return error;
+}
+
+
+static int pvc_connect(struct socket *sock,struct sockaddr *sockaddr,
+    int sockaddr_len,int flags)
+{
+	return pvc_bind(sock,sockaddr,sockaddr_len);
+}
+
+static int pvc_setsockopt(struct socket *sock, int level, int optname,
+			  char __user *optval, int optlen)
+{
+	struct sock *sk = sock->sk;
+	int error;
+
+	lock_sock(sk);
+	error = vcc_setsockopt(sock, level, optname, optval, optlen);
+	release_sock(sk);
+	return error;
+}
+
+
+static int pvc_getsockopt(struct socket *sock, int level, int optname,
+		          char __user *optval, int __user *optlen)
+{
+	struct sock *sk = sock->sk;
+	int error;
+
+	lock_sock(sk);
+	error = vcc_getsockopt(sock, level, optname, optval, optlen);
+	release_sock(sk);
+	return error;
+}
+
+
+static int pvc_getname(struct socket *sock,struct sockaddr *sockaddr,
+    int *sockaddr_len,int peer)
+{
+	struct sockaddr_atmpvc *addr;
+	struct atm_vcc *vcc = ATM_SD(sock);
+
+	if (!vcc->dev || !test_bit(ATM_VF_ADDR,&vcc->flags)) return -ENOTCONN;
+        *sockaddr_len = sizeof(struct sockaddr_atmpvc);
+	addr = (struct sockaddr_atmpvc *) sockaddr;
+	addr->sap_family = AF_ATMPVC;
+	addr->sap_addr.itf = vcc->dev->number;
+	addr->sap_addr.vpi = vcc->vpi;
+	addr->sap_addr.vci = vcc->vci;
+	return 0;
+}
+
+
+static struct proto_ops pvc_proto_ops = {
+	.family =	PF_ATMPVC,
+	.owner =	THIS_MODULE,
+
+	.release =	vcc_release,
+	.bind =		pvc_bind,
+	.connect =	pvc_connect,
+	.socketpair =	sock_no_socketpair,
+	.accept =	sock_no_accept,
+	.getname =	pvc_getname,
+	.poll =		vcc_poll,
+	.ioctl =	vcc_ioctl,
+	.listen =	sock_no_listen,
+	.shutdown =	pvc_shutdown,
+	.setsockopt =	pvc_setsockopt,
+	.getsockopt =	pvc_getsockopt,
+	.sendmsg =	vcc_sendmsg,
+	.recvmsg =	vcc_recvmsg,
+	.mmap =		sock_no_mmap,
+	.sendpage =	sock_no_sendpage,
+};
+
+
+static int pvc_create(struct socket *sock,int protocol)
+{
+	sock->ops = &pvc_proto_ops;
+	return vcc_create(sock, protocol, PF_ATMPVC);
+}
+
+
+static struct net_proto_family pvc_family_ops = {
+	.family = PF_ATMPVC,
+	.create = pvc_create,
+	.owner = THIS_MODULE,
+};
+
+
+/*
+ *	Initialize the ATM PVC protocol family
+ */
+
+
+int __init atmpvc_init(void)
+{
+	return sock_register(&pvc_family_ops);
+}
+
+void atmpvc_exit(void)
+{
+	sock_unregister(PF_ATMPVC);
+}
diff --git a/net/atm/raw.c b/net/atm/raw.c
new file mode 100644
index 000000000000..4a0466e91aa6
--- /dev/null
+++ b/net/atm/raw.c
@@ -0,0 +1,98 @@
+/* net/atm/raw.c - Raw AAL0 and AAL5 transports */
+
+/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
+
+
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/atmdev.h>
+#include <linux/kernel.h>
+#include <linux/skbuff.h>
+#include <linux/mm.h>
+
+#include "common.h"
+#include "protocols.h"
+
+
+#if 0
+#define DPRINTK(format,args...) printk(KERN_DEBUG format,##args)
+#else
+#define DPRINTK(format,args...)
+#endif
+
+
+/*
+ * SKB == NULL indicates that the link is being closed
+ */
+
+static void atm_push_raw(struct atm_vcc *vcc,struct sk_buff *skb)
+{
+	if (skb) {
+		struct sock *sk = sk_atm(vcc);
+
+		skb_queue_tail(&sk->sk_receive_queue, skb);
+		sk->sk_data_ready(sk, skb->len);
+	}
+}
+
+
+static void atm_pop_raw(struct atm_vcc *vcc,struct sk_buff *skb)
+{
+	struct sock *sk = sk_atm(vcc);
+
+	DPRINTK("APopR (%d) %d -= %d\n", vcc->vci, sk->sk_wmem_alloc,
+		skb->truesize);
+	atomic_sub(skb->truesize, &sk->sk_wmem_alloc);
+	dev_kfree_skb_any(skb);
+	sk->sk_write_space(sk);
+}
+
+
+static int atm_send_aal0(struct atm_vcc *vcc,struct sk_buff *skb)
+{
+	/*
+	 * Note that if vpi/vci are _ANY or _UNSPEC the below will
+	 * still work
+	 */
+	if (!capable(CAP_NET_ADMIN) &&
+            (((u32 *) skb->data)[0] & (ATM_HDR_VPI_MASK | ATM_HDR_VCI_MASK)) !=
+            ((vcc->vpi << ATM_HDR_VPI_SHIFT) | (vcc->vci << ATM_HDR_VCI_SHIFT)))
+	    {
+		kfree_skb(skb);
+		return -EADDRNOTAVAIL;
+        }
+	return vcc->dev->ops->send(vcc,skb);
+}
+
+
+int atm_init_aal0(struct atm_vcc *vcc)
+{
+	vcc->push = atm_push_raw;
+	vcc->pop = atm_pop_raw;
+	vcc->push_oam = NULL;
+	vcc->send = atm_send_aal0;
+	return 0;
+}
+
+
+int atm_init_aal34(struct atm_vcc *vcc)
+{
+	vcc->push = atm_push_raw;
+	vcc->pop = atm_pop_raw;
+	vcc->push_oam = NULL;
+	vcc->send = vcc->dev->ops->send;
+	return 0;
+}
+
+
+int atm_init_aal5(struct atm_vcc *vcc)
+{
+	vcc->push = atm_push_raw;
+	vcc->pop = atm_pop_raw;
+	vcc->push_oam = NULL;
+	vcc->send = vcc->dev->ops->send;
+	return 0;
+}
+
+
+EXPORT_SYMBOL(atm_init_aal5);
diff --git a/net/atm/resources.c b/net/atm/resources.c
new file mode 100644
index 000000000000..33f1685dbb77
--- /dev/null
+++ b/net/atm/resources.c
@@ -0,0 +1,432 @@
+/* net/atm/resources.c - Statically allocated resources */
+
+/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
+
+/* Fixes
+ * Arnaldo Carvalho de Melo <acme@conectiva.com.br>
+ * 2002/01 - don't free the whole struct sock on sk->destruct time,
+ * 	     use the default destruct function initialized by sock_init_data */
+
+
+#include <linux/config.h>
+#include <linux/ctype.h>
+#include <linux/string.h>
+#include <linux/atmdev.h>
+#include <linux/sonet.h>
+#include <linux/kernel.h> /* for barrier */
+#include <linux/module.h>
+#include <linux/bitops.h>
+#include <linux/delay.h>
+#include <net/sock.h>	 /* for struct sock */
+
+#include "common.h"
+#include "resources.h"
+#include "addr.h"
+
+
+LIST_HEAD(atm_devs);
+DEFINE_SPINLOCK(atm_dev_lock);
+
+static struct atm_dev *__alloc_atm_dev(const char *type)
+{
+	struct atm_dev *dev;
+
+	dev = kmalloc(sizeof(*dev), GFP_KERNEL);
+	if (!dev)
+		return NULL;
+	memset(dev, 0, sizeof(*dev));
+	dev->type = type;
+	dev->signal = ATM_PHY_SIG_UNKNOWN;
+	dev->link_rate = ATM_OC3_PCR;
+	spin_lock_init(&dev->lock);
+	INIT_LIST_HEAD(&dev->local);
+
+	return dev;
+}
+
+static void __free_atm_dev(struct atm_dev *dev)
+{
+	kfree(dev);
+}
+
+static struct atm_dev *__atm_dev_lookup(int number)
+{
+	struct atm_dev *dev;
+	struct list_head *p;
+
+	list_for_each(p, &atm_devs) {
+		dev = list_entry(p, struct atm_dev, dev_list);
+		if ((dev->ops) && (dev->number == number)) {
+			atm_dev_hold(dev);
+			return dev;
+		}
+	}
+	return NULL;
+}
+
+struct atm_dev *atm_dev_lookup(int number)
+{
+	struct atm_dev *dev;
+
+	spin_lock(&atm_dev_lock);
+	dev = __atm_dev_lookup(number);
+	spin_unlock(&atm_dev_lock);
+	return dev;
+}
+
+struct atm_dev *atm_dev_register(const char *type, const struct atmdev_ops *ops,
+				 int number, unsigned long *flags)
+{
+	struct atm_dev *dev, *inuse;
+
+	dev = __alloc_atm_dev(type);
+	if (!dev) {
+		printk(KERN_ERR "atm_dev_register: no space for dev %s\n",
+		    type);
+		return NULL;
+	}
+	spin_lock(&atm_dev_lock);
+	if (number != -1) {
+		if ((inuse = __atm_dev_lookup(number))) {
+			atm_dev_put(inuse);
+			spin_unlock(&atm_dev_lock);
+			__free_atm_dev(dev);
+			return NULL;
+		}
+		dev->number = number;
+	} else {
+		dev->number = 0;
+		while ((inuse = __atm_dev_lookup(dev->number))) {
+			atm_dev_put(inuse);
+			dev->number++;
+		}
+	}
+
+	dev->ops = ops;
+	if (flags)
+		dev->flags = *flags;
+	else
+		memset(&dev->flags, 0, sizeof(dev->flags));
+	memset(&dev->stats, 0, sizeof(dev->stats));
+	atomic_set(&dev->refcnt, 1);
+	list_add_tail(&dev->dev_list, &atm_devs);
+	spin_unlock(&atm_dev_lock);
+
+	if (atm_proc_dev_register(dev) < 0) {
+		printk(KERN_ERR "atm_dev_register: "
+		       "atm_proc_dev_register failed for dev %s\n",
+		       type);
+		spin_lock(&atm_dev_lock);
+		list_del(&dev->dev_list);
+		spin_unlock(&atm_dev_lock);
+		__free_atm_dev(dev);
+		return NULL;
+	}
+
+	return dev;
+}
+
+
+void atm_dev_deregister(struct atm_dev *dev)
+{
+	unsigned long warning_time;
+
+	atm_proc_dev_deregister(dev);
+
+	spin_lock(&atm_dev_lock);
+	list_del(&dev->dev_list);
+	spin_unlock(&atm_dev_lock);
+
+        warning_time = jiffies;
+        while (atomic_read(&dev->refcnt) != 1) {
+                msleep(250);
+                if ((jiffies - warning_time) > 10 * HZ) {
+                        printk(KERN_EMERG "atm_dev_deregister: waiting for "
+                               "dev %d to become free. Usage count = %d\n",
+                               dev->number, atomic_read(&dev->refcnt));
+                        warning_time = jiffies;
+                }
+        }
+
+	__free_atm_dev(dev);
+}
+
+void shutdown_atm_dev(struct atm_dev *dev)
+{
+	if (atomic_read(&dev->refcnt) > 1) {
+		set_bit(ATM_DF_CLOSE, &dev->flags);
+		return;
+	}
+	if (dev->ops->dev_close)
+		dev->ops->dev_close(dev);
+	atm_dev_deregister(dev);
+}
+
+
+static void copy_aal_stats(struct k_atm_aal_stats *from,
+    struct atm_aal_stats *to)
+{
+#define __HANDLE_ITEM(i) to->i = atomic_read(&from->i)
+	__AAL_STAT_ITEMS
+#undef __HANDLE_ITEM
+}
+
+
+static void subtract_aal_stats(struct k_atm_aal_stats *from,
+    struct atm_aal_stats *to)
+{
+#define __HANDLE_ITEM(i) atomic_sub(to->i, &from->i)
+	__AAL_STAT_ITEMS
+#undef __HANDLE_ITEM
+}
+
+
+static int fetch_stats(struct atm_dev *dev, struct atm_dev_stats __user *arg, int zero)
+{
+	struct atm_dev_stats tmp;
+	int error = 0;
+
+	copy_aal_stats(&dev->stats.aal0, &tmp.aal0);
+	copy_aal_stats(&dev->stats.aal34, &tmp.aal34);
+	copy_aal_stats(&dev->stats.aal5, &tmp.aal5);
+	if (arg)
+		error = copy_to_user(arg, &tmp, sizeof(tmp));
+	if (zero && !error) {
+		subtract_aal_stats(&dev->stats.aal0, &tmp.aal0);
+		subtract_aal_stats(&dev->stats.aal34, &tmp.aal34);
+		subtract_aal_stats(&dev->stats.aal5, &tmp.aal5);
+	}
+	return error ? -EFAULT : 0;
+}
+
+
+int atm_dev_ioctl(unsigned int cmd, void __user *arg)
+{
+	void __user *buf;
+	int error, len, number, size = 0;
+	struct atm_dev *dev;
+	struct list_head *p;
+	int *tmp_buf, *tmp_p;
+	struct atm_iobuf __user *iobuf = arg;
+	struct atmif_sioc __user *sioc = arg;
+	switch (cmd) {
+		case ATM_GETNAMES:
+			if (get_user(buf, &iobuf->buffer))
+				return -EFAULT;
+			if (get_user(len, &iobuf->length))
+				return -EFAULT;
+			spin_lock(&atm_dev_lock);
+			list_for_each(p, &atm_devs)
+				size += sizeof(int);
+			if (size > len) {
+				spin_unlock(&atm_dev_lock);
+				return -E2BIG;
+			}
+			tmp_buf = kmalloc(size, GFP_ATOMIC);
+			if (!tmp_buf) {
+				spin_unlock(&atm_dev_lock);
+				return -ENOMEM;
+			}
+			tmp_p = tmp_buf;
+			list_for_each(p, &atm_devs) {
+				dev = list_entry(p, struct atm_dev, dev_list);
+				*tmp_p++ = dev->number;
+			}
+			spin_unlock(&atm_dev_lock);
+		        error = ((copy_to_user(buf, tmp_buf, size)) ||
+					put_user(size, &iobuf->length))
+						? -EFAULT : 0;
+			kfree(tmp_buf);
+			return error;
+		default:
+			break;
+	}
+
+	if (get_user(buf, &sioc->arg))
+		return -EFAULT;
+	if (get_user(len, &sioc->length))
+		return -EFAULT;
+	if (get_user(number, &sioc->number))
+		return -EFAULT;
+
+	if (!(dev = atm_dev_lookup(number)))
+		return -ENODEV;
+	
+	switch (cmd) {
+		case ATM_GETTYPE:
+			size = strlen(dev->type) + 1;
+			if (copy_to_user(buf, dev->type, size)) {
+				error = -EFAULT;
+				goto done;
+			}
+			break;
+		case ATM_GETESI:
+			size = ESI_LEN;
+			if (copy_to_user(buf, dev->esi, size)) {
+				error = -EFAULT;
+				goto done;
+			}
+			break;
+		case ATM_SETESI:
+			{
+				int i;
+
+				for (i = 0; i < ESI_LEN; i++)
+					if (dev->esi[i]) {
+						error = -EEXIST;
+						goto done;
+					}
+			}
+			/* fall through */
+		case ATM_SETESIF:
+			{
+				unsigned char esi[ESI_LEN];
+
+				if (!capable(CAP_NET_ADMIN)) {
+					error = -EPERM;
+					goto done;
+				}
+				if (copy_from_user(esi, buf, ESI_LEN)) {
+					error = -EFAULT;
+					goto done;
+				}
+				memcpy(dev->esi, esi, ESI_LEN);
+				error =  ESI_LEN;
+				goto done;
+			}
+		case ATM_GETSTATZ:
+			if (!capable(CAP_NET_ADMIN)) {
+				error = -EPERM;
+				goto done;
+			}
+			/* fall through */
+		case ATM_GETSTAT:
+			size = sizeof(struct atm_dev_stats);
+			error = fetch_stats(dev, buf, cmd == ATM_GETSTATZ);
+			if (error)
+				goto done;
+			break;
+		case ATM_GETCIRANGE:
+			size = sizeof(struct atm_cirange);
+			if (copy_to_user(buf, &dev->ci_range, size)) {
+				error = -EFAULT;
+				goto done;
+			}
+			break;
+		case ATM_GETLINKRATE:
+			size = sizeof(int);
+			if (copy_to_user(buf, &dev->link_rate, size)) {
+				error = -EFAULT;
+				goto done;
+			}
+			break;
+		case ATM_RSTADDR:
+			if (!capable(CAP_NET_ADMIN)) {
+				error = -EPERM;
+				goto done;
+			}
+			atm_reset_addr(dev);
+			break;
+		case ATM_ADDADDR:
+		case ATM_DELADDR:
+			if (!capable(CAP_NET_ADMIN)) {
+				error = -EPERM;
+				goto done;
+			}
+			{
+				struct sockaddr_atmsvc addr;
+
+				if (copy_from_user(&addr, buf, sizeof(addr))) {
+					error = -EFAULT;
+					goto done;
+				}
+				if (cmd == ATM_ADDADDR)
+					error = atm_add_addr(dev, &addr);
+				else
+					error = atm_del_addr(dev, &addr);
+				goto done;
+			}
+		case ATM_GETADDR:
+			error = atm_get_addr(dev, buf, len);
+			if (error < 0)
+				goto done;
+			size = error;
+			/* may return 0, but later on size == 0 means "don't
+			   write the length" */
+			error = put_user(size, &sioc->length)
+				? -EFAULT : 0;
+			goto done;
+		case ATM_SETLOOP:
+			if (__ATM_LM_XTRMT((int) (unsigned long) buf) &&
+			    __ATM_LM_XTLOC((int) (unsigned long) buf) >
+			    __ATM_LM_XTRMT((int) (unsigned long) buf)) {
+				error = -EINVAL;
+				goto done;
+			}
+			/* fall through */
+		case ATM_SETCIRANGE:
+		case SONET_GETSTATZ:
+		case SONET_SETDIAG:
+		case SONET_CLRDIAG:
+		case SONET_SETFRAMING:
+			if (!capable(CAP_NET_ADMIN)) {
+				error = -EPERM;
+				goto done;
+			}
+			/* fall through */
+		default:
+			if (!dev->ops->ioctl) {
+				error = -EINVAL;
+				goto done;
+			}
+			size = dev->ops->ioctl(dev, cmd, buf);
+			if (size < 0) {
+				error = (size == -ENOIOCTLCMD ? -EINVAL : size);
+				goto done;
+			}
+	}
+	
+	if (size)
+		error = put_user(size, &sioc->length)
+			? -EFAULT : 0;
+	else
+		error = 0;
+done:
+	atm_dev_put(dev);
+	return error;
+}
+
+static __inline__ void *dev_get_idx(loff_t left)
+{
+	struct list_head *p;
+
+	list_for_each(p, &atm_devs) {
+		if (!--left)
+			break;
+	}
+	return (p != &atm_devs) ? p : NULL;
+}
+
+void *atm_dev_seq_start(struct seq_file *seq, loff_t *pos)
+{
+ 	spin_lock(&atm_dev_lock);
+	return *pos ? dev_get_idx(*pos) : (void *) 1;
+}
+
+void atm_dev_seq_stop(struct seq_file *seq, void *v)
+{
+ 	spin_unlock(&atm_dev_lock);
+}
+ 
+void *atm_dev_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	++*pos;
+	v = (v == (void *)1) ? atm_devs.next : ((struct list_head *)v)->next;
+	return (v == &atm_devs) ? NULL : v;
+}
+
+
+EXPORT_SYMBOL(atm_dev_register);
+EXPORT_SYMBOL(atm_dev_deregister);
+EXPORT_SYMBOL(atm_dev_lookup);
+EXPORT_SYMBOL(shutdown_atm_dev);
diff --git a/net/atm/resources.h b/net/atm/resources.h
new file mode 100644
index 000000000000..12910619dbb6
--- /dev/null
+++ b/net/atm/resources.h
@@ -0,0 +1,46 @@
+/* net/atm/resources.h - ATM-related resources */
+
+/* Written 1995-1998 by Werner Almesberger, EPFL LRC/ICA */
+
+
+#ifndef NET_ATM_RESOURCES_H
+#define NET_ATM_RESOURCES_H
+
+#include <linux/config.h>
+#include <linux/atmdev.h>
+
+
+extern struct list_head atm_devs;
+extern spinlock_t atm_dev_lock;
+
+
+int atm_dev_ioctl(unsigned int cmd, void __user *arg);
+
+
+#ifdef CONFIG_PROC_FS
+
+#include <linux/proc_fs.h>
+
+void *atm_dev_seq_start(struct seq_file *seq, loff_t *pos);
+void atm_dev_seq_stop(struct seq_file *seq, void *v);
+void *atm_dev_seq_next(struct seq_file *seq, void *v, loff_t *pos);
+
+
+int atm_proc_dev_register(struct atm_dev *dev);
+void atm_proc_dev_deregister(struct atm_dev *dev);
+
+#else
+
+static inline int atm_proc_dev_register(struct atm_dev *dev)
+{
+	return 0;
+}
+
+static inline void atm_proc_dev_deregister(struct atm_dev *dev)
+{
+	/* nothing */
+}
+
+#endif /* CONFIG_PROC_FS */
+
+#endif
diff --git a/net/atm/signaling.c b/net/atm/signaling.c
new file mode 100644
index 000000000000..6ff803154c04
--- /dev/null
+++ b/net/atm/signaling.c
@@ -0,0 +1,280 @@
+/* net/atm/signaling.c - ATM signaling */
+
+/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
+
+
+#include <linux/errno.h>	/* error codes */
+#include <linux/kernel.h>	/* printk */
+#include <linux/skbuff.h>
+#include <linux/wait.h>
+#include <linux/sched.h>	/* jiffies and HZ */
+#include <linux/atm.h>		/* ATM stuff */
+#include <linux/atmsap.h>
+#include <linux/atmsvc.h>
+#include <linux/atmdev.h>
+#include <linux/bitops.h>
+
+#include "resources.h"
+#include "signaling.h"
+
+
+#undef WAIT_FOR_DEMON		/* #define this if system calls on SVC sockets
+				   should block until the demon runs.
+				   Danger: may cause nasty hangs if the demon
+				   crashes. */
+
+#if 0
+#define DPRINTK(format,args...) printk(KERN_DEBUG format,##args)
+#else
+#define DPRINTK(format,args...)
+#endif
+
+
+struct atm_vcc *sigd = NULL;
+#ifdef WAIT_FOR_DEMON
+static DECLARE_WAIT_QUEUE_HEAD(sigd_sleep);
+#endif
+
+
+static void sigd_put_skb(struct sk_buff *skb)
+{
+#ifdef WAIT_FOR_DEMON
+	static unsigned long silence;
+	DECLARE_WAITQUEUE(wait,current);
+
+	add_wait_queue(&sigd_sleep,&wait);
+	while (!sigd) {
+		set_current_state(TASK_UNINTERRUPTIBLE);
+		if (time_after(jiffies, silence) || silence == 0) {
+			printk(KERN_INFO "atmsvc: waiting for signaling demon "
+			    "...\n");
+			silence = (jiffies+30*HZ)|1;
+		}
+		schedule();
+	}
+	current->state = TASK_RUNNING;
+	remove_wait_queue(&sigd_sleep,&wait);
+#else
+	if (!sigd) {
+		printk(KERN_WARNING "atmsvc: no signaling demon\n");
+		kfree_skb(skb);
+		return;
+	}
+#endif
+	atm_force_charge(sigd,skb->truesize);
+	skb_queue_tail(&sk_atm(sigd)->sk_receive_queue,skb);
+	sk_atm(sigd)->sk_data_ready(sk_atm(sigd), skb->len);
+}
+
+
+static void modify_qos(struct atm_vcc *vcc,struct atmsvc_msg *msg)
+{
+	struct sk_buff *skb;
+
+	if (test_bit(ATM_VF_RELEASED,&vcc->flags) ||
+	    !test_bit(ATM_VF_READY,&vcc->flags))
+		return;
+	msg->type = as_error;
+	if (!vcc->dev->ops->change_qos) msg->reply = -EOPNOTSUPP;
+	else {
+		/* should lock VCC */
+		msg->reply = vcc->dev->ops->change_qos(vcc,&msg->qos,
+		    msg->reply);
+		if (!msg->reply) msg->type = as_okay;
+	}
+	/*
+	 * Should probably just turn around the old skb. But the, the buffer
+	 * space accounting needs to follow the change too. Maybe later.
+	 */
+	while (!(skb = alloc_skb(sizeof(struct atmsvc_msg),GFP_KERNEL)))
+		schedule();
+	*(struct atmsvc_msg *) skb_put(skb,sizeof(struct atmsvc_msg)) = *msg;
+	sigd_put_skb(skb);
+}
+
+
+static int sigd_send(struct atm_vcc *vcc,struct sk_buff *skb)
+{
+	struct atmsvc_msg *msg;
+	struct atm_vcc *session_vcc;
+	struct sock *sk;
+
+	msg = (struct atmsvc_msg *) skb->data;
+	atomic_sub(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc);
+	DPRINTK("sigd_send %d (0x%lx)\n",(int) msg->type,
+	  (unsigned long) msg->vcc);
+	vcc = *(struct atm_vcc **) &msg->vcc;
+	sk = sk_atm(vcc);
+
+	switch (msg->type) {
+		case as_okay:
+			sk->sk_err = -msg->reply;
+			clear_bit(ATM_VF_WAITING, &vcc->flags);
+			if (!*vcc->local.sas_addr.prv &&
+			    !*vcc->local.sas_addr.pub) {
+				vcc->local.sas_family = AF_ATMSVC;
+				memcpy(vcc->local.sas_addr.prv,
+				    msg->local.sas_addr.prv,ATM_ESA_LEN);
+				memcpy(vcc->local.sas_addr.pub,
+				    msg->local.sas_addr.pub,ATM_E164_LEN+1);
+			}
+			session_vcc = vcc->session ? vcc->session : vcc;
+			if (session_vcc->vpi || session_vcc->vci) break;
+			session_vcc->itf = msg->pvc.sap_addr.itf;
+			session_vcc->vpi = msg->pvc.sap_addr.vpi;
+			session_vcc->vci = msg->pvc.sap_addr.vci;
+			if (session_vcc->vpi || session_vcc->vci)
+				session_vcc->qos = msg->qos;
+			break;
+		case as_error:
+			clear_bit(ATM_VF_REGIS,&vcc->flags);
+			clear_bit(ATM_VF_READY,&vcc->flags);
+			sk->sk_err = -msg->reply;
+			clear_bit(ATM_VF_WAITING, &vcc->flags);
+			break;
+		case as_indicate:
+			vcc = *(struct atm_vcc **) &msg->listen_vcc;
+			DPRINTK("as_indicate!!!\n");
+			lock_sock(sk);
+			if (sk_acceptq_is_full(sk)) {
+				sigd_enq(NULL,as_reject,vcc,NULL,NULL);
+				dev_kfree_skb(skb);
+				goto as_indicate_complete;
+			}
+			sk->sk_ack_backlog++;
+			skb_queue_tail(&sk->sk_receive_queue, skb);
+			DPRINTK("waking sk->sk_sleep 0x%p\n", sk->sk_sleep);
+			sk->sk_state_change(sk);
+as_indicate_complete:
+			release_sock(sk);
+			return 0;
+		case as_close:
+			set_bit(ATM_VF_RELEASED,&vcc->flags);
+			vcc_release_async(vcc, msg->reply);
+			goto out;
+		case as_modify:
+			modify_qos(vcc,msg);
+			break;
+		case as_addparty:
+		case as_dropparty:
+			sk->sk_err_soft = msg->reply;	/* < 0 failure, otherwise ep_ref */
+			clear_bit(ATM_VF_WAITING, &vcc->flags);
+			break;
+		default:
+			printk(KERN_ALERT "sigd_send: bad message type %d\n",
+			    (int) msg->type);
+			return -EINVAL;
+	}
+	sk->sk_state_change(sk);
+out:
+	dev_kfree_skb(skb);
+	return 0;
+}
+
+
+void sigd_enq2(struct atm_vcc *vcc,enum atmsvc_msg_type type,
+    struct atm_vcc *listen_vcc,const struct sockaddr_atmpvc *pvc,
+    const struct sockaddr_atmsvc *svc,const struct atm_qos *qos,int reply)
+{
+	struct sk_buff *skb;
+	struct atmsvc_msg *msg;
+	static unsigned session = 0;
+
+	DPRINTK("sigd_enq %d (0x%p)\n",(int) type,vcc);
+	while (!(skb = alloc_skb(sizeof(struct atmsvc_msg),GFP_KERNEL)))
+		schedule();
+	msg = (struct atmsvc_msg *) skb_put(skb,sizeof(struct atmsvc_msg));
+	memset(msg,0,sizeof(*msg));
+	msg->type = type;
+	*(struct atm_vcc **) &msg->vcc = vcc;
+	*(struct atm_vcc **) &msg->listen_vcc = listen_vcc;
+	msg->reply = reply;
+	if (qos) msg->qos = *qos;
+	if (vcc) msg->sap = vcc->sap;
+	if (svc) msg->svc = *svc;
+	if (vcc) msg->local = vcc->local;
+	if (pvc) msg->pvc = *pvc;
+	if (vcc) {
+		if (type == as_connect && test_bit(ATM_VF_SESSION, &vcc->flags))
+			msg->session = ++session;
+			/* every new pmp connect gets the next session number */
+	}
+	sigd_put_skb(skb);
+	if (vcc) set_bit(ATM_VF_REGIS,&vcc->flags);
+}
+
+
+void sigd_enq(struct atm_vcc *vcc,enum atmsvc_msg_type type,
+    struct atm_vcc *listen_vcc,const struct sockaddr_atmpvc *pvc,
+    const struct sockaddr_atmsvc *svc)
+{
+	sigd_enq2(vcc,type,listen_vcc,pvc,svc,vcc ? &vcc->qos : NULL,0);
+	/* other ISP applications may use "reply" */
+}
+
+
+static void purge_vcc(struct atm_vcc *vcc)
+{
+	if (sk_atm(vcc)->sk_family == PF_ATMSVC &&
+	    !test_bit(ATM_VF_META,&vcc->flags)) {
+		set_bit(ATM_VF_RELEASED,&vcc->flags);
+		vcc_release_async(vcc, -EUNATCH);
+	}
+}
+
+
+static void sigd_close(struct atm_vcc *vcc)
+{
+	struct hlist_node *node;
+	struct sock *s;
+	int i;
+
+	DPRINTK("sigd_close\n");
+	sigd = NULL;
+	if (skb_peek(&sk_atm(vcc)->sk_receive_queue))
+		printk(KERN_ERR "sigd_close: closing with requests pending\n");
+	skb_queue_purge(&sk_atm(vcc)->sk_receive_queue);
+
+	read_lock(&vcc_sklist_lock);
+	for(i = 0; i < VCC_HTABLE_SIZE; ++i) {
+		struct hlist_head *head = &vcc_hash[i];
+
+		sk_for_each(s, node, head) {
+			struct atm_vcc *vcc = atm_sk(s);
+
+			if (vcc->dev)
+				purge_vcc(vcc);
+		}
+	}
+	read_unlock(&vcc_sklist_lock);
+}
+
+
+static struct atmdev_ops sigd_dev_ops = {
+	.close = sigd_close,
+	.send =	sigd_send
+};
+
+
+static struct atm_dev sigd_dev = {
+	.ops =		&sigd_dev_ops,
+	.type =		"sig",
+	.number =	999,
+	.lock =		SPIN_LOCK_UNLOCKED
+};
+
+
+int sigd_attach(struct atm_vcc *vcc)
+{
+	if (sigd) return -EADDRINUSE;
+	DPRINTK("sigd_attach\n");
+	sigd = vcc;
+	vcc->dev = &sigd_dev;
+	vcc_insert_socket(sk_atm(vcc));
+	set_bit(ATM_VF_META,&vcc->flags);
+	set_bit(ATM_VF_READY,&vcc->flags);
+#ifdef WAIT_FOR_DEMON
+	wake_up(&sigd_sleep);
+#endif
+	return 0;
+}
diff --git a/net/atm/signaling.h b/net/atm/signaling.h
new file mode 100644
index 000000000000..434ead455714
--- /dev/null
+++ b/net/atm/signaling.h
@@ -0,0 +1,30 @@
+/* net/atm/signaling.h - ATM signaling */
+ 
+/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
+ 
+
+#ifndef NET_ATM_SIGNALING_H
+#define NET_ATM_SIGNALING_H
+
+#include <linux/atm.h>
+#include <linux/atmdev.h>
+#include <linux/atmsvc.h>
+
+
+extern struct atm_vcc *sigd; /* needed in svc_release */
+
+
+/*
+ * sigd_enq is a wrapper for sigd_enq2, covering the more common cases, and
+ * avoiding huge lists of null values.
+ */
+
+void sigd_enq2(struct atm_vcc *vcc,enum atmsvc_msg_type type,
+    struct atm_vcc *listen_vcc,const struct sockaddr_atmpvc *pvc,
+    const struct sockaddr_atmsvc *svc,const struct atm_qos *qos,int reply);
+void sigd_enq(struct atm_vcc *vcc,enum atmsvc_msg_type type,
+    struct atm_vcc *listen_vcc,const struct sockaddr_atmpvc *pvc,
+    const struct sockaddr_atmsvc *svc);
+int sigd_attach(struct atm_vcc *vcc);
+
+#endif
diff --git a/net/atm/svc.c b/net/atm/svc.c
new file mode 100644
index 000000000000..02f5374a51f2
--- /dev/null
+++ b/net/atm/svc.c
@@ -0,0 +1,674 @@
+/* net/atm/svc.c - ATM SVC sockets */
+
+/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
+
+
+#include <linux/string.h>
+#include <linux/net.h>		/* struct socket, struct proto_ops */
+#include <linux/errno.h>	/* error codes */
+#include <linux/kernel.h>	/* printk */
+#include <linux/skbuff.h>
+#include <linux/wait.h>
+#include <linux/sched.h>	/* jiffies and HZ */
+#include <linux/fcntl.h>	/* O_NONBLOCK */
+#include <linux/init.h>
+#include <linux/atm.h>		/* ATM stuff */
+#include <linux/atmsap.h>
+#include <linux/atmsvc.h>
+#include <linux/atmdev.h>
+#include <linux/bitops.h>
+#include <net/sock.h>		/* for sock_no_* */
+#include <asm/uaccess.h>
+
+#include "resources.h"
+#include "common.h"		/* common for PVCs and SVCs */
+#include "signaling.h"
+#include "addr.h"
+
+
+#if 0
+#define DPRINTK(format,args...) printk(KERN_DEBUG format,##args)
+#else
+#define DPRINTK(format,args...)
+#endif
+
+
+static int svc_create(struct socket *sock,int protocol);
+
+
+/*
+ * Note: since all this is still nicely synchronized with the signaling demon,
+ *       there's no need to protect sleep loops with clis. If signaling is
+ *       moved into the kernel, that would change.
+ */
+
+
+static int svc_shutdown(struct socket *sock,int how)
+{
+	return 0;
+}
+
+
+static void svc_disconnect(struct atm_vcc *vcc)
+{
+	DEFINE_WAIT(wait);
+	struct sk_buff *skb;
+	struct sock *sk = sk_atm(vcc);
+
+	DPRINTK("svc_disconnect %p\n",vcc);
+	if (test_bit(ATM_VF_REGIS,&vcc->flags)) {
+		prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
+		sigd_enq(vcc,as_close,NULL,NULL,NULL);
+		while (!test_bit(ATM_VF_RELEASED,&vcc->flags) && sigd) {
+			schedule();
+			prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
+		}
+		finish_wait(sk->sk_sleep, &wait);
+	}
+	/* beware - socket is still in use by atmsigd until the last
+	   as_indicate has been answered */
+	while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) {
+		atm_return(vcc, skb->truesize);
+		DPRINTK("LISTEN REL\n");
+		sigd_enq2(NULL,as_reject,vcc,NULL,NULL,&vcc->qos,0);
+		dev_kfree_skb(skb);
+	}
+	clear_bit(ATM_VF_REGIS, &vcc->flags);
+	/* ... may retry later */
+}
+
+
+static int svc_release(struct socket *sock)
+{
+	struct sock *sk = sock->sk;
+	struct atm_vcc *vcc;
+
+	if (sk)  {
+		vcc = ATM_SD(sock);
+		DPRINTK("svc_release %p\n", vcc);
+		clear_bit(ATM_VF_READY, &vcc->flags);
+		/* VCC pointer is used as a reference, so we must not free it
+		   (thereby subjecting it to re-use) before all pending connections
+	           are closed */
+		svc_disconnect(vcc);
+		vcc_release(sock);
+	}
+	return 0;
+}
+
+
+static int svc_bind(struct socket *sock,struct sockaddr *sockaddr,
+    int sockaddr_len)
+{
+	DEFINE_WAIT(wait);
+	struct sock *sk = sock->sk;
+	struct sockaddr_atmsvc *addr;
+	struct atm_vcc *vcc;
+	int error;
+
+	if (sockaddr_len != sizeof(struct sockaddr_atmsvc))
+		return -EINVAL;
+	lock_sock(sk);
+	if (sock->state == SS_CONNECTED) {
+		error = -EISCONN;
+		goto out;
+	}
+	if (sock->state != SS_UNCONNECTED) {
+		error = -EINVAL;
+		goto out;
+	}
+	vcc = ATM_SD(sock);
+	if (test_bit(ATM_VF_SESSION, &vcc->flags)) {
+		error = -EINVAL;
+		goto out;
+	}
+	addr = (struct sockaddr_atmsvc *) sockaddr;
+	if (addr->sas_family != AF_ATMSVC) {
+		error = -EAFNOSUPPORT;
+		goto out;
+	}
+	clear_bit(ATM_VF_BOUND,&vcc->flags);
+	    /* failing rebind will kill old binding */
+	/* @@@ check memory (de)allocation on rebind */
+	if (!test_bit(ATM_VF_HASQOS,&vcc->flags)) {
+		error = -EBADFD;
+		goto out;
+	}
+	vcc->local = *addr;
+	set_bit(ATM_VF_WAITING, &vcc->flags);
+	prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
+	sigd_enq(vcc,as_bind,NULL,NULL,&vcc->local);
+	while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
+		schedule();
+		prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
+	}
+	finish_wait(sk->sk_sleep, &wait);
+	clear_bit(ATM_VF_REGIS,&vcc->flags); /* doesn't count */
+	if (!sigd) {
+		error = -EUNATCH;
+		goto out;
+	}
+        if (!sk->sk_err)
+		set_bit(ATM_VF_BOUND,&vcc->flags);
+	error = -sk->sk_err;
+out:
+	release_sock(sk);
+	return error;
+}
+
+
+static int svc_connect(struct socket *sock,struct sockaddr *sockaddr,
+    int sockaddr_len,int flags)
+{
+	DEFINE_WAIT(wait);
+	struct sock *sk = sock->sk;
+	struct sockaddr_atmsvc *addr;
+	struct atm_vcc *vcc = ATM_SD(sock);
+	int error;
+
+	DPRINTK("svc_connect %p\n",vcc);
+	lock_sock(sk);
+	if (sockaddr_len != sizeof(struct sockaddr_atmsvc)) {
+		error = -EINVAL;
+		goto out;
+	}
+
+	switch (sock->state) {
+	default:
+		error = -EINVAL;
+		goto out;
+	case SS_CONNECTED:
+		error = -EISCONN;
+		goto out;
+	case SS_CONNECTING:
+		if (test_bit(ATM_VF_WAITING, &vcc->flags)) {
+			error = -EALREADY;
+			goto out;
+		}
+		sock->state = SS_UNCONNECTED;
+		if (sk->sk_err) {
+			error = -sk->sk_err;
+			goto out;
+		}
+		break;
+	case SS_UNCONNECTED:
+		addr = (struct sockaddr_atmsvc *) sockaddr;
+		if (addr->sas_family != AF_ATMSVC) {
+			error = -EAFNOSUPPORT;
+			goto out;
+		}
+		if (!test_bit(ATM_VF_HASQOS, &vcc->flags)) {
+			error = -EBADFD;
+			goto out;
+		}
+		if (vcc->qos.txtp.traffic_class == ATM_ANYCLASS ||
+		    vcc->qos.rxtp.traffic_class == ATM_ANYCLASS) {
+			error = -EINVAL;
+			goto out;
+		}
+		if (!vcc->qos.txtp.traffic_class &&
+		    !vcc->qos.rxtp.traffic_class) {
+			error = -EINVAL;
+			goto out;
+		}
+		vcc->remote = *addr;
+		set_bit(ATM_VF_WAITING, &vcc->flags);
+		prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
+		sigd_enq(vcc,as_connect,NULL,NULL,&vcc->remote);
+		if (flags & O_NONBLOCK) {
+			finish_wait(sk->sk_sleep, &wait);
+			sock->state = SS_CONNECTING;
+			error = -EINPROGRESS;
+			goto out;
+		}
+		error = 0;
+		while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
+			schedule();
+			if (!signal_pending(current)) {
+				prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
+				continue;
+			}
+			DPRINTK("*ABORT*\n");
+			/*
+			 * This is tricky:
+			 *   Kernel ---close--> Demon
+			 *   Kernel <--close--- Demon
+		         * or
+			 *   Kernel ---close--> Demon
+			 *   Kernel <--error--- Demon
+			 * or
+			 *   Kernel ---close--> Demon
+			 *   Kernel <--okay---- Demon
+			 *   Kernel <--close--- Demon
+			 */
+			sigd_enq(vcc,as_close,NULL,NULL,NULL);
+			while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
+				prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
+				schedule();
+			}
+			if (!sk->sk_err)
+				while (!test_bit(ATM_VF_RELEASED,&vcc->flags)
+				    && sigd) {
+					prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
+					schedule();
+				}
+			clear_bit(ATM_VF_REGIS,&vcc->flags);
+			clear_bit(ATM_VF_RELEASED,&vcc->flags);
+			clear_bit(ATM_VF_CLOSE,&vcc->flags);
+			    /* we're gone now but may connect later */
+			error = -EINTR;
+			break;
+		}
+		finish_wait(sk->sk_sleep, &wait);
+		if (error)
+			goto out;
+		if (!sigd) {
+			error = -EUNATCH;
+			goto out;
+		}
+		if (sk->sk_err) {
+			error = -sk->sk_err;
+			goto out;
+		}
+	}
+/*
+ * Not supported yet
+ *
+ * #ifndef CONFIG_SINGLE_SIGITF
+ */
+	vcc->qos.txtp.max_pcr = SELECT_TOP_PCR(vcc->qos.txtp);
+	vcc->qos.txtp.pcr = 0;
+	vcc->qos.txtp.min_pcr = 0;
+/*
+ * #endif
+ */
+	if (!(error = vcc_connect(sock, vcc->itf, vcc->vpi, vcc->vci)))
+		sock->state = SS_CONNECTED;
+	else
+		(void) svc_disconnect(vcc);
+out:
+	release_sock(sk);
+	return error;
+}
+
+
+static int svc_listen(struct socket *sock,int backlog)
+{
+	DEFINE_WAIT(wait);
+	struct sock *sk = sock->sk;
+	struct atm_vcc *vcc = ATM_SD(sock);
+	int error;
+
+	DPRINTK("svc_listen %p\n",vcc);
+	lock_sock(sk);
+	/* let server handle listen on unbound sockets */
+	if (test_bit(ATM_VF_SESSION,&vcc->flags)) {
+		error = -EINVAL;
+		goto out;
+	}
+	set_bit(ATM_VF_WAITING, &vcc->flags);
+	prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
+	sigd_enq(vcc,as_listen,NULL,NULL,&vcc->local);
+	while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
+		schedule();
+		prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
+	}
+	finish_wait(sk->sk_sleep, &wait);
+	if (!sigd) {
+		error = -EUNATCH;
+		goto out;
+	}
+	set_bit(ATM_VF_LISTEN,&vcc->flags);
+	sk->sk_max_ack_backlog = backlog > 0 ? backlog : ATM_BACKLOG_DEFAULT;
+	error = -sk->sk_err;
+out:
+	release_sock(sk);
+	return error;
+}
+
+
+static int svc_accept(struct socket *sock,struct socket *newsock,int flags)
+{
+	struct sock *sk = sock->sk;
+	struct sk_buff *skb;
+	struct atmsvc_msg *msg;
+	struct atm_vcc *old_vcc = ATM_SD(sock);
+	struct atm_vcc *new_vcc;
+	int error;
+
+	lock_sock(sk);
+
+	error = svc_create(newsock,0);
+	if (error)
+		goto out;
+
+	new_vcc = ATM_SD(newsock);
+
+	DPRINTK("svc_accept %p -> %p\n",old_vcc,new_vcc);
+	while (1) {
+		DEFINE_WAIT(wait);
+
+		prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
+		while (!(skb = skb_dequeue(&sk->sk_receive_queue)) &&
+		       sigd) {
+			if (test_bit(ATM_VF_RELEASED,&old_vcc->flags)) break;
+			if (test_bit(ATM_VF_CLOSE,&old_vcc->flags)) {
+				error = -sk->sk_err;
+				break;
+			}
+			if (flags & O_NONBLOCK) {
+				error = -EAGAIN;
+				break;
+			}
+			release_sock(sk);
+			schedule();
+			lock_sock(sk);
+			if (signal_pending(current)) {
+				error = -ERESTARTSYS;
+				break;
+			}
+			prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
+		}
+		finish_wait(sk->sk_sleep, &wait);
+		if (error)
+			goto out;
+		if (!skb) {
+			error = -EUNATCH;
+			goto out;
+		}
+		msg = (struct atmsvc_msg *) skb->data;
+		new_vcc->qos = msg->qos;
+		set_bit(ATM_VF_HASQOS,&new_vcc->flags);
+		new_vcc->remote = msg->svc;
+		new_vcc->local = msg->local;
+		new_vcc->sap = msg->sap;
+		error = vcc_connect(newsock, msg->pvc.sap_addr.itf,
+				    msg->pvc.sap_addr.vpi, msg->pvc.sap_addr.vci);
+		dev_kfree_skb(skb);
+		sk->sk_ack_backlog--;
+		if (error) {
+			sigd_enq2(NULL,as_reject,old_vcc,NULL,NULL,
+			    &old_vcc->qos,error);
+			error = error == -EAGAIN ? -EBUSY : error;
+			goto out;
+		}
+		/* wait should be short, so we ignore the non-blocking flag */
+		set_bit(ATM_VF_WAITING, &new_vcc->flags);
+		prepare_to_wait(sk_atm(new_vcc)->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
+		sigd_enq(new_vcc,as_accept,old_vcc,NULL,NULL);
+		while (test_bit(ATM_VF_WAITING, &new_vcc->flags) && sigd) {
+			release_sock(sk);
+			schedule();
+			lock_sock(sk);
+			prepare_to_wait(sk_atm(new_vcc)->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
+		}
+		finish_wait(sk_atm(new_vcc)->sk_sleep, &wait);
+		if (!sigd) {
+			error = -EUNATCH;
+			goto out;
+		}
+		if (!sk_atm(new_vcc)->sk_err)
+			break;
+		if (sk_atm(new_vcc)->sk_err != ERESTARTSYS) {
+			error = -sk_atm(new_vcc)->sk_err;
+			goto out;
+		}
+	}
+	newsock->state = SS_CONNECTED;
+out:
+	release_sock(sk);
+	return error;
+}
+
+
+static int svc_getname(struct socket *sock,struct sockaddr *sockaddr,
+    int *sockaddr_len,int peer)
+{
+	struct sockaddr_atmsvc *addr;
+
+	*sockaddr_len = sizeof(struct sockaddr_atmsvc);
+	addr = (struct sockaddr_atmsvc *) sockaddr;
+	memcpy(addr,peer ? &ATM_SD(sock)->remote : &ATM_SD(sock)->local,
+	    sizeof(struct sockaddr_atmsvc));
+	return 0;
+}
+
+
+int svc_change_qos(struct atm_vcc *vcc,struct atm_qos *qos)
+{
+	struct sock *sk = sk_atm(vcc);
+	DEFINE_WAIT(wait);
+
+	set_bit(ATM_VF_WAITING, &vcc->flags);
+	prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
+	sigd_enq2(vcc,as_modify,NULL,NULL,&vcc->local,qos,0);
+	while (test_bit(ATM_VF_WAITING, &vcc->flags) &&
+	       !test_bit(ATM_VF_RELEASED, &vcc->flags) && sigd) {
+		schedule();
+		prepare_to_wait(sk->sk_sleep, &wait, TASK_UNINTERRUPTIBLE);
+	}
+	finish_wait(sk->sk_sleep, &wait);
+	if (!sigd) return -EUNATCH;
+	return -sk->sk_err;
+}
+
+
+static int svc_setsockopt(struct socket *sock, int level, int optname,
+			  char __user *optval, int optlen)
+{
+	struct sock *sk = sock->sk;
+	struct atm_vcc *vcc = ATM_SD(sock);
+	int value, error = 0;
+
+	lock_sock(sk);
+	switch (optname) {
+		case SO_ATMSAP:
+			if (level != SOL_ATM || optlen != sizeof(struct atm_sap)) {
+				error = -EINVAL;
+				goto out;
+			}
+			if (copy_from_user(&vcc->sap, optval, optlen)) {
+				error = -EFAULT;
+				goto out;
+			}
+			set_bit(ATM_VF_HASSAP, &vcc->flags);
+			break;
+ 		case SO_MULTIPOINT:
+			if (level != SOL_ATM || optlen != sizeof(int)) {
+				error = -EINVAL;
+				goto out;
+			}
+ 			if (get_user(value, (int __user *) optval)) {
+ 				error = -EFAULT;
+				goto out;
+			}
+			if (value == 1) {
+				set_bit(ATM_VF_SESSION, &vcc->flags);
+			} else if (value == 0) {
+				clear_bit(ATM_VF_SESSION, &vcc->flags);
+			} else {
+				error = -EINVAL;
+			}
+  			break;
+		default:
+			error = vcc_setsockopt(sock, level, optname,
+					       optval, optlen);
+	}
+
+out:
+	release_sock(sk);
+	return error;
+}
+
+
+static int svc_getsockopt(struct socket *sock,int level,int optname,
+    char __user *optval,int __user *optlen)
+{
+	struct sock *sk = sock->sk;
+	int error = 0, len;
+
+	lock_sock(sk);
+	if (!__SO_LEVEL_MATCH(optname, level) || optname != SO_ATMSAP) {
+		error = vcc_getsockopt(sock, level, optname, optval, optlen);
+		goto out;
+	}
+	if (get_user(len, optlen)) {
+		error = -EFAULT;
+		goto out;
+	}
+	if (len != sizeof(struct atm_sap)) {
+		error = -EINVAL;
+		goto out;
+	}
+	if (copy_to_user(optval, &ATM_SD(sock)->sap, sizeof(struct atm_sap))) {
+		error = -EFAULT;
+		goto out;
+	}
+out:
+	release_sock(sk);
+	return error;
+}
+
+
+static int svc_addparty(struct socket *sock, struct sockaddr *sockaddr,
+			int sockaddr_len, int flags)
+{
+	DEFINE_WAIT(wait);
+	struct sock *sk = sock->sk;
+	struct atm_vcc *vcc = ATM_SD(sock);
+	int error;
+
+	lock_sock(sk);
+	set_bit(ATM_VF_WAITING, &vcc->flags);
+	prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
+	sigd_enq(vcc, as_addparty, NULL, NULL,
+	         (struct sockaddr_atmsvc *) sockaddr);
+	if (flags & O_NONBLOCK) {
+		finish_wait(sk->sk_sleep, &wait);
+		error = -EINPROGRESS;
+		goto out;
+	}
+	DPRINTK("svc_addparty added wait queue\n");
+	while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
+		schedule();
+		prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
+	}
+	finish_wait(sk->sk_sleep, &wait);
+	error = xchg(&sk->sk_err_soft, 0);
+out:
+	release_sock(sk);
+	return error;
+}
+
+
+static int svc_dropparty(struct socket *sock, int ep_ref)
+{
+	DEFINE_WAIT(wait);
+	struct sock *sk = sock->sk;
+	struct atm_vcc *vcc = ATM_SD(sock);
+	int error;
+
+	lock_sock(sk);
+	set_bit(ATM_VF_WAITING, &vcc->flags);
+	prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
+	sigd_enq2(vcc, as_dropparty, NULL, NULL, NULL, NULL, ep_ref);
+	while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
+		schedule();
+		prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
+	}
+	finish_wait(sk->sk_sleep, &wait);
+	if (!sigd) {
+		error = -EUNATCH;
+		goto out;
+	}
+	error = xchg(&sk->sk_err_soft, 0);
+out:
+	release_sock(sk);
+	return error;
+}
+
+
+static int svc_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
+{
+ 	int error, ep_ref;
+ 	struct sockaddr_atmsvc sa;
+	struct atm_vcc *vcc = ATM_SD(sock);
+  
+	switch (cmd) {
+ 		case ATM_ADDPARTY:
+ 			if (!test_bit(ATM_VF_SESSION, &vcc->flags))
+ 				return -EINVAL;
+ 			if (copy_from_user(&sa, (void __user *) arg, sizeof(sa)))
+				return -EFAULT;
+ 			error = svc_addparty(sock, (struct sockaddr *) &sa, sizeof(sa), 0);
+ 			break;
+ 		case ATM_DROPPARTY:
+ 			if (!test_bit(ATM_VF_SESSION, &vcc->flags))
+ 				return -EINVAL;
+ 			if (copy_from_user(&ep_ref, (void __user *) arg, sizeof(int)))
+				return -EFAULT;
+ 			error = svc_dropparty(sock, ep_ref);
+ 			break;
+  		default:
+			error = vcc_ioctl(sock, cmd, arg);
+	}
+
+	return error;
+}
+
+static struct proto_ops svc_proto_ops = {
+	.family =	PF_ATMSVC,
+	.owner =	THIS_MODULE,
+
+	.release =	svc_release,
+	.bind =		svc_bind,
+	.connect =	svc_connect,
+	.socketpair =	sock_no_socketpair,
+	.accept =	svc_accept,
+	.getname =	svc_getname,
+	.poll =		vcc_poll,
+	.ioctl =	svc_ioctl,
+	.listen =	svc_listen,
+	.shutdown =	svc_shutdown,
+	.setsockopt =	svc_setsockopt,
+	.getsockopt =	svc_getsockopt,
+	.sendmsg =	vcc_sendmsg,
+	.recvmsg =	vcc_recvmsg,
+	.mmap =		sock_no_mmap,
+	.sendpage =	sock_no_sendpage,
+};
+
+
+static int svc_create(struct socket *sock,int protocol)
+{
+	int error;
+
+	sock->ops = &svc_proto_ops;
+	error = vcc_create(sock, protocol, AF_ATMSVC);
+	if (error) return error;
+	ATM_SD(sock)->local.sas_family = AF_ATMSVC;
+	ATM_SD(sock)->remote.sas_family = AF_ATMSVC;
+	return 0;
+}
+
+
+static struct net_proto_family svc_family_ops = {
+	.family = PF_ATMSVC,
+	.create = svc_create,
+	.owner = THIS_MODULE,
+};
+
+
+/*
+ *	Initialize the ATM SVC protocol family
+ */
+
+int __init atmsvc_init(void)
+{
+	return sock_register(&svc_family_ops);
+}
+
+void atmsvc_exit(void)
+{
+	sock_unregister(PF_ATMSVC);
+}