Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking changes from David Miller:

 1) Get rid of the error prone NLA_PUT*() macros that used an embedded
    goto.

 2) Kill off the token-ring and MCA networking drivers, from Paul
    Gortmaker.

 3) Reduce high-order allocations made by datagram AF_UNIX sockets, from
    Eric Dumazet.

 4) Add PTP hardware clock support to IGB and IXGBE, from Richard
    Cochran and Jacob Keller.

 5) Allow users to query timestamping capabilities of a card via
    ethtool, from Richard Cochran.

 6) Add loadbalance mode to the teaming driver, from Jiri Pirko.  Part
    of this is that we can now have BPF filters not attached to sockets,
    and the loadbalancing function is calculated using one.

 7) Francois Romieu went through the network drivers removing gratuitous
    uses of netdev->base_addr, perhaps some day we can remove it
    completely but it's used for ISA probing still.

 8) Add a BPF JIT for sparc.  I know, who cares, right? :-)

 9) Move networking sysctl registry away from using the compatability
    mode interfaces in the sysctl code.  From Eric W Biederman.

10) Pavel Emelyanov added a way to save and restore TCP socket state via
    TCP_REPAIR, TCP_REPAIR_QUEUE, and TCP_QUEUE_SEQ socket options as
    well as a way to forcefully bind a socket to a port via the
    sk->sk_reuse value SK_FORCE_REUSE.  There is also a
    TCP_REPAIR_OPTIONS which allows to reinstante the TCP options
    enabled on the connection.

11) Several enhancements from Eric Dumazet that, in particular, can
    enhance splice performance on TCP sockets significantly.

     a) Reset the offset of the per-socket sendmsg page when we know
        we're the only use of the page in linear_to_page().

     b) Add facilities such that skb->data can be backed a page rather
        than SLAB kmalloc'd memory.  In particular devices which were
        receiving into linear RX buffers can now end up providing paged
        data.

    The big result is that code like splice and GRO do not have to copy
    any more.

12) Allow a pure sender to more gracefully handle ACK backlogs in TCP.
    What can happen at high rates is that the sender hasn't grown his
    receive buffer limits at all (he's not receiving data so really
    doesn't need to), but the non-data ACKs consume receive buffer
    space.

    sk_add_backlog() is too aggressive in dropping frames in this case,
    so relax it's requirements by using the receive buffer plus the send
    buffer limit as the backlog limit instead of just the former.

    Also from Eric Dumazet.

13) Add ipv6 support to L2TP, from Benjamin LaHaise, James Chapman, and
    Chris Elston.

14) Implement TCP early retransmit (RFC 5827), from Yuchung Cheng.
    Basically, we can start fast retransmit before hiting the dupack
    threshold under certain conditions.

15) New CODEL active queue management packet scheduler, from Eric
    Dumazet based upon initial work by Dave Taht.

    Basically, the big feature is that packets are dropped (or ECN bits
    are set) based upon how long packets live in the queue, rather than
    the queue length (which is what RED uses).

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1341 commits)
  drivers/net/stmmac: seq_file fix memory leak
  ipv6/exthdrs: strict Pad1 and PadN check
  USB: qmi_wwan: Add ZTE (Vodafone) K3520-Z
  USB: qmi_wwan: Add ZTE (Vodafone) K3765-Z
  USB: qmi_wwan: Make forced int 4 whitelist generic
  net/ipv4: replace simple_strtoul with kstrtoul
  net/ipv4/ipconfig: neaten __setup placement
  net: qmi_wwan: Add Vodafone/Huawei K5005 support
  net: cdc_ether: Add ZTE WWAN matches before generic Ethernet
  ipv6: use skb coalescing in reassembly
  ipv4: use skb coalescing in defragmentation
  net: introduce skb_try_coalesce()
  net:ipv6:fixed space issues relating to operators.
  net:ipv6:fixed a trailing white space issue.
  ipv6: disable GSO on sockets hitting dst_allfrag
  tg3: use netdev_alloc_frag() API
  net: napi_frags_skb() is static
  ppp: avoid false drop_monitor false positives
  ipv6: bool/const conversions phase2
  ipx: Remove spurious NULL checking in ipx_ioctl().
  ...

1 files changed, 72 insertions, 88 deletions

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 167ea10b521a..ffcb3b016843 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -109,6 +109,7 @@
 #include <net/rtnetlink.h>
 #ifdef CONFIG_SYSCTL
 #include <linux/sysctl.h>
+#include <linux/kmemleak.h>
 #endif
 #include <net/secure_seq.h>
 
@@ -229,7 +230,7 @@ const __u8 ip_tos2prio[16] = {
 	TC_PRIO_INTERACTIVE_BULK,
 	ECN_OR_COST(INTERACTIVE_BULK)
 };
-
+EXPORT_SYMBOL(ip_tos2prio);
 
 /*
  * Route cache.
@@ -296,7 +297,7 @@ static inline void rt_hash_lock_init(void)
 #endif
 
 static struct rt_hash_bucket 	*rt_hash_table __read_mostly;
-static unsigned			rt_hash_mask __read_mostly;
+static unsigned int		rt_hash_mask __read_mostly;
 static unsigned int		rt_hash_log  __read_mostly;
 
 static DEFINE_PER_CPU(struct rt_cache_stat, rt_cache_stat);
@@ -959,8 +960,7 @@ void rt_cache_flush_batch(struct net *net)
 
 static void rt_emergency_hash_rebuild(struct net *net)
 {
-	if (net_ratelimit())
-		pr_warn("Route hash chain too long!\n");
+	net_warn_ratelimited("Route hash chain too long!\n");
 	rt_cache_invalidate(net);
 }
 
@@ -1083,8 +1083,7 @@ static int rt_garbage_collect(struct dst_ops *ops)
 		goto out;
 	if (dst_entries_get_slow(&ipv4_dst_ops) < ip_rt_max_size)
 		goto out;
-	if (net_ratelimit())
-		pr_warn("dst cache overflow\n");
+	net_warn_ratelimited("dst cache overflow\n");
 	RT_CACHE_STAT_INC(gc_dst_overflow);
 	return 1;
 
@@ -1143,7 +1142,7 @@ static int rt_bind_neighbour(struct rtable *rt)
 	return 0;
 }
 
-static struct rtable *rt_intern_hash(unsigned hash, struct rtable *rt,
+static struct rtable *rt_intern_hash(unsigned int hash, struct rtable *rt,
 				     struct sk_buff *skb, int ifindex)
 {
 	struct rtable	*rth, *cand;
@@ -1181,8 +1180,7 @@ restart:
 		if (rt->rt_type == RTN_UNICAST || rt_is_output_route(rt)) {
 			int err = rt_bind_neighbour(rt);
 			if (err) {
-				if (net_ratelimit())
-					pr_warn("Neighbour table failure & not caching routes\n");
+				net_warn_ratelimited("Neighbour table failure & not caching routes\n");
 				ip_rt_put(rt);
 				return ERR_PTR(err);
 			}
@@ -1298,8 +1296,7 @@ restart:
 				goto restart;
 			}
 
-			if (net_ratelimit())
-				pr_warn("Neighbour table overflow\n");
+			net_warn_ratelimited("Neighbour table overflow\n");
 			rt_drop(rt);
 			return ERR_PTR(-ENOBUFS);
 		}
@@ -1377,14 +1374,13 @@ void __ip_select_ident(struct iphdr *iph, struct dst_entry *dst, int more)
 			return;
 		}
 	} else if (!rt)
-		printk(KERN_DEBUG "rt_bind_peer(0) @%p\n",
-		       __builtin_return_address(0));
+		pr_debug("rt_bind_peer(0) @%p\n", __builtin_return_address(0));
 
 	ip_select_fb_ident(iph);
 }
 EXPORT_SYMBOL(__ip_select_ident);
 
-static void rt_del(unsigned hash, struct rtable *rt)
+static void rt_del(unsigned int hash, struct rtable *rt)
 {
 	struct rtable __rcu **rthp;
 	struct rtable *aux;
@@ -1502,11 +1498,11 @@ void ip_rt_redirect(__be32 old_gw, __be32 daddr, __be32 new_gw,
 
 reject_redirect:
 #ifdef CONFIG_IP_ROUTE_VERBOSE
-	if (IN_DEV_LOG_MARTIANS(in_dev) && net_ratelimit())
-		pr_info("Redirect from %pI4 on %s about %pI4 ignored\n"
-			"  Advised path = %pI4 -> %pI4\n",
-			&old_gw, dev->name, &new_gw,
-			&saddr, &daddr);
+	if (IN_DEV_LOG_MARTIANS(in_dev))
+		net_info_ratelimited("Redirect from %pI4 on %s about %pI4 ignored\n"
+				     "  Advised path = %pI4 -> %pI4\n",
+				     &old_gw, dev->name, &new_gw,
+				     &saddr, &daddr);
 #endif
 	;
 }
@@ -1538,7 +1534,7 @@ static struct dst_entry *ipv4_negative_advice(struct dst_entry *dst)
 			ip_rt_put(rt);
 			ret = NULL;
 		} else if (rt->rt_flags & RTCF_REDIRECTED) {
-			unsigned hash = rt_hash(rt->rt_key_dst, rt->rt_key_src,
+			unsigned int hash = rt_hash(rt->rt_key_dst, rt->rt_key_src,
 						rt->rt_oif,
 						rt_genid(dev_net(dst->dev)));
 			rt_del(hash, rt);
@@ -1616,11 +1612,10 @@ void ip_rt_send_redirect(struct sk_buff *skb)
 		++peer->rate_tokens;
 #ifdef CONFIG_IP_ROUTE_VERBOSE
 		if (log_martians &&
-		    peer->rate_tokens == ip_rt_redirect_number &&
-		    net_ratelimit())
-			pr_warn("host %pI4/if%d ignores redirects for %pI4 to %pI4\n",
-				&ip_hdr(skb)->saddr, rt->rt_iif,
-				&rt->rt_dst, &rt->rt_gateway);
+		    peer->rate_tokens == ip_rt_redirect_number)
+			net_warn_ratelimited("host %pI4/if%d ignores redirects for %pI4 to %pI4\n",
+					     &ip_hdr(skb)->saddr, rt->rt_iif,
+					     &rt->rt_dst, &rt->rt_gateway);
 #endif
 	}
 }
@@ -1843,9 +1838,9 @@ static void ipv4_link_failure(struct sk_buff *skb)
 
 static int ip_rt_bug(struct sk_buff *skb)
 {
-	printk(KERN_DEBUG "ip_rt_bug: %pI4 -> %pI4, %s\n",
-		&ip_hdr(skb)->saddr, &ip_hdr(skb)->daddr,
-		skb->dev ? skb->dev->name : "?");
+	pr_debug("%s: %pI4 -> %pI4, %s\n",
+		 __func__, &ip_hdr(skb)->saddr, &ip_hdr(skb)->daddr,
+		 skb->dev ? skb->dev->name : "?");
 	kfree_skb(skb);
 	WARN_ON(1);
 	return 0;
@@ -2134,8 +2129,7 @@ static int __mkroute_input(struct sk_buff *skb,
 	/* get a working reference to the output device */
 	out_dev = __in_dev_get_rcu(FIB_RES_DEV(*res));
 	if (out_dev == NULL) {
-		if (net_ratelimit())
-			pr_crit("Bug in ip_route_input_slow(). Please report.\n");
+		net_crit_ratelimited("Bug in ip_route_input_slow(). Please report.\n");
 		return -EINVAL;
 	}
 
@@ -2215,9 +2209,9 @@ static int ip_mkroute_input(struct sk_buff *skb,
 			    struct in_device *in_dev,
 			    __be32 daddr, __be32 saddr, u32 tos)
 {
-	struct rtable* rth = NULL;
+	struct rtable *rth = NULL;
 	int err;
-	unsigned hash;
+	unsigned int hash;
 
 #ifdef CONFIG_IP_ROUTE_MULTIPATH
 	if (res->fi && res->fi->fib_nhs > 1)
@@ -2255,13 +2249,13 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
 	struct fib_result res;
 	struct in_device *in_dev = __in_dev_get_rcu(dev);
 	struct flowi4	fl4;
-	unsigned	flags = 0;
+	unsigned int	flags = 0;
 	u32		itag = 0;
-	struct rtable * rth;
-	unsigned	hash;
+	struct rtable	*rth;
+	unsigned int	hash;
 	__be32		spec_dst;
 	int		err = -EINVAL;
-	struct net    * net = dev_net(dev);
+	struct net    *net = dev_net(dev);
 
 	/* IP on this device is disabled. */
 
@@ -2406,9 +2400,9 @@ no_route:
 martian_destination:
 	RT_CACHE_STAT_INC(in_martian_dst);
 #ifdef CONFIG_IP_ROUTE_VERBOSE
-	if (IN_DEV_LOG_MARTIANS(in_dev) && net_ratelimit())
-		pr_warn("martian destination %pI4 from %pI4, dev %s\n",
-			&daddr, &saddr, dev->name);
+	if (IN_DEV_LOG_MARTIANS(in_dev))
+		net_warn_ratelimited("martian destination %pI4 from %pI4, dev %s\n",
+				     &daddr, &saddr, dev->name);
 #endif
 
 e_hostunreach:
@@ -2433,8 +2427,8 @@ martian_source_keep_err:
 int ip_route_input_common(struct sk_buff *skb, __be32 daddr, __be32 saddr,
 			   u8 tos, struct net_device *dev, bool noref)
 {
-	struct rtable * rth;
-	unsigned	hash;
+	struct rtable	*rth;
+	unsigned int	hash;
 	int iif = dev->ifindex;
 	struct net *net;
 	int res;
@@ -2972,7 +2966,8 @@ static int rt_fill_info(struct net *net,
 	r->rtm_src_len	= 0;
 	r->rtm_tos	= rt->rt_key_tos;
 	r->rtm_table	= RT_TABLE_MAIN;
-	NLA_PUT_U32(skb, RTA_TABLE, RT_TABLE_MAIN);
+	if (nla_put_u32(skb, RTA_TABLE, RT_TABLE_MAIN))
+		goto nla_put_failure;
 	r->rtm_type	= rt->rt_type;
 	r->rtm_scope	= RT_SCOPE_UNIVERSE;
 	r->rtm_protocol = RTPROT_UNSPEC;
@@ -2980,31 +2975,38 @@ static int rt_fill_info(struct net *net,
 	if (rt->rt_flags & RTCF_NOTIFY)
 		r->rtm_flags |= RTM_F_NOTIFY;
 
-	NLA_PUT_BE32(skb, RTA_DST, rt->rt_dst);
-
+	if (nla_put_be32(skb, RTA_DST, rt->rt_dst))
+		goto nla_put_failure;
 	if (rt->rt_key_src) {
 		r->rtm_src_len = 32;
-		NLA_PUT_BE32(skb, RTA_SRC, rt->rt_key_src);
+		if (nla_put_be32(skb, RTA_SRC, rt->rt_key_src))
+			goto nla_put_failure;
 	}
-	if (rt->dst.dev)
-		NLA_PUT_U32(skb, RTA_OIF, rt->dst.dev->ifindex);
+	if (rt->dst.dev &&
+	    nla_put_u32(skb, RTA_OIF, rt->dst.dev->ifindex))
+		goto nla_put_failure;
 #ifdef CONFIG_IP_ROUTE_CLASSID
-	if (rt->dst.tclassid)
-		NLA_PUT_U32(skb, RTA_FLOW, rt->dst.tclassid);
+	if (rt->dst.tclassid &&
+	    nla_put_u32(skb, RTA_FLOW, rt->dst.tclassid))
+		goto nla_put_failure;
 #endif
-	if (rt_is_input_route(rt))
-		NLA_PUT_BE32(skb, RTA_PREFSRC, rt->rt_spec_dst);
-	else if (rt->rt_src != rt->rt_key_src)
-		NLA_PUT_BE32(skb, RTA_PREFSRC, rt->rt_src);
-
-	if (rt->rt_dst != rt->rt_gateway)
-		NLA_PUT_BE32(skb, RTA_GATEWAY, rt->rt_gateway);
+	if (rt_is_input_route(rt)) {
+		if (nla_put_be32(skb, RTA_PREFSRC, rt->rt_spec_dst))
+			goto nla_put_failure;
+	} else if (rt->rt_src != rt->rt_key_src) {
+		if (nla_put_be32(skb, RTA_PREFSRC, rt->rt_src))
+			goto nla_put_failure;
+	}
+	if (rt->rt_dst != rt->rt_gateway &&
+	    nla_put_be32(skb, RTA_GATEWAY, rt->rt_gateway))
+		goto nla_put_failure;
 
 	if (rtnetlink_put_metrics(skb, dst_metrics_ptr(&rt->dst)) < 0)
 		goto nla_put_failure;
 
-	if (rt->rt_mark)
-		NLA_PUT_BE32(skb, RTA_MARK, rt->rt_mark);
+	if (rt->rt_mark &&
+	    nla_put_be32(skb, RTA_MARK, rt->rt_mark))
+		goto nla_put_failure;
 
 	error = rt->dst.error;
 	if (peer) {
@@ -3045,7 +3047,8 @@ static int rt_fill_info(struct net *net,
 			}
 		} else
 #endif
-			NLA_PUT_U32(skb, RTA_IIF, rt->rt_iif);
+			if (nla_put_u32(skb, RTA_IIF, rt->rt_iif))
+				goto nla_put_failure;
 	}
 
 	if (rtnl_put_cacheinfo(skb, &rt->dst, id, ts, tsage,
@@ -3059,7 +3062,7 @@ nla_put_failure:
 	return -EMSGSIZE;
 }
 
-static int inet_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr* nlh, void *arg)
+static int inet_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr *nlh, void *arg)
 {
 	struct net *net = sock_net(in_skb->sk);
 	struct rtmsg *rtm;
@@ -3334,23 +3337,6 @@ static ctl_table ipv4_route_table[] = {
 	{ }
 };
 
-static struct ctl_table empty[1];
-
-static struct ctl_table ipv4_skeleton[] =
-{
-	{ .procname = "route", 
-	  .mode = 0555, .child = ipv4_route_table},
-	{ .procname = "neigh", 
-	  .mode = 0555, .child = empty},
-	{ }
-};
-
-static __net_initdata struct ctl_path ipv4_path[] = {
-	{ .procname = "net", },
-	{ .procname = "ipv4", },
-	{ },
-};
-
 static struct ctl_table ipv4_route_flush_table[] = {
 	{
 		.procname	= "flush",
@@ -3361,13 +3347,6 @@ static struct ctl_table ipv4_route_flush_table[] = {
 	{ },
 };
 
-static __net_initdata struct ctl_path ipv4_route_path[] = {
-	{ .procname = "net", },
-	{ .procname = "ipv4", },
-	{ .procname = "route", },
-	{ },
-};
-
 static __net_init int sysctl_route_net_init(struct net *net)
 {
 	struct ctl_table *tbl;
@@ -3380,8 +3359,7 @@ static __net_init int sysctl_route_net_init(struct net *net)
 	}
 	tbl[0].extra1 = net;
 
-	net->ipv4.route_hdr =
-		register_net_sysctl_table(net, ipv4_route_path, tbl);
+	net->ipv4.route_hdr = register_net_sysctl(net, "net/ipv4/route", tbl);
 	if (net->ipv4.route_hdr == NULL)
 		goto err_reg;
 	return 0;
@@ -3430,9 +3408,15 @@ struct ip_rt_acct __percpu *ip_rt_acct __read_mostly;
 static __initdata unsigned long rhash_entries;
 static int __init set_rhash_entries(char *str)
 {
+	ssize_t ret;
+
 	if (!str)
 		return 0;
-	rhash_entries = simple_strtoul(str, &str, 0);
+
+	ret = kstrtoul(str, 0, &rhash_entries);
+	if (ret)
+		return 0;
+
 	return 1;
 }
 __setup("rhash_entries=", set_rhash_entries);
@@ -3505,6 +3489,6 @@ int __init ip_rt_init(void)
  */
 void __init ip_static_sysctl_init(void)
 {
-	register_sysctl_paths(ipv4_path, ipv4_skeleton);
+	register_net_sysctl(&init_net, "net/ipv4/route", ipv4_route_table);
 }
 #endif