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| author | Samuel Ortiz <sameo@linux.intel.com> | 2011-12-14 16:43:06 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-12-14 14:50:12 -0500 |
| commit | 7c7cd3bfec68fee33b30d177df6a6a0c4bbdc59d (patch) | |
| tree | 7b7332d63303d30c73b4ecd8a300e84d801baa33 /net/nfc | |
| parent | 52858b51b2c779a8f9db32accf774b165522ad81 (diff) | |
| download | lwn-7c7cd3bfec68fee33b30d177df6a6a0c4bbdc59d.tar.gz lwn-7c7cd3bfec68fee33b30d177df6a6a0c4bbdc59d.zip | |
NFC: Add tx skb allocation routine
This is a factorization of the current rawsock tx skb allocation routine,
as it will be used by the LLCP code.
We also rename nfc_alloc_skb to nfc_alloc_recv_skb for consistency sake.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/nfc')
| -rw-r--r-- | net/nfc/core.c | 30 | ||||
| -rw-r--r-- | net/nfc/rawsock.c | 7 |
2 files changed, 29 insertions, 8 deletions
diff --git a/net/nfc/core.c b/net/nfc/core.c index 2a838b099d82..f53f88ada687 100644 --- a/net/nfc/core.c +++ b/net/nfc/core.c @@ -27,6 +27,7 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/slab.h> +#include <linux/nfc.h> #include "nfc.h" @@ -275,12 +276,35 @@ error: } /** - * nfc_alloc_skb - allocate a skb for data exchange responses + * nfc_alloc_send_skb - allocate a skb for data exchange responses * * @size: size to allocate * @gfp: gfp flags */ -struct sk_buff *nfc_alloc_skb(unsigned int size, gfp_t gfp) +struct sk_buff *nfc_alloc_send_skb(struct nfc_dev *dev, struct sock *sk, + unsigned int flags, unsigned int size, + unsigned int *err) +{ + struct sk_buff *skb; + unsigned int total_size; + + total_size = size + + dev->tx_headroom + dev->tx_tailroom + NFC_HEADER_SIZE; + + skb = sock_alloc_send_skb(sk, total_size, flags & MSG_DONTWAIT, err); + if (skb) + skb_reserve(skb, dev->tx_headroom + NFC_HEADER_SIZE); + + return skb; +} + +/** + * nfc_alloc_recv_skb - allocate a skb for data exchange responses + * + * @size: size to allocate + * @gfp: gfp flags + */ +struct sk_buff *nfc_alloc_recv_skb(unsigned int size, gfp_t gfp) { struct sk_buff *skb; unsigned int total_size; @@ -293,7 +317,7 @@ struct sk_buff *nfc_alloc_skb(unsigned int size, gfp_t gfp) return skb; } -EXPORT_SYMBOL(nfc_alloc_skb); +EXPORT_SYMBOL(nfc_alloc_recv_skb); /** * nfc_targets_found - inform that targets were found diff --git a/net/nfc/rawsock.c b/net/nfc/rawsock.c index 5e9b991eac13..11ac0a17156e 100644 --- a/net/nfc/rawsock.c +++ b/net/nfc/rawsock.c @@ -208,13 +208,10 @@ static int rawsock_sendmsg(struct kiocb *iocb, struct socket *sock, if (sock->state != SS_CONNECTED) return -ENOTCONN; - skb = sock_alloc_send_skb(sk, len + dev->tx_headroom + dev->tx_tailroom + NFC_HEADER_SIZE, - msg->msg_flags & MSG_DONTWAIT, &rc); - if (!skb) + skb = nfc_alloc_send_skb(dev, sk, msg->msg_flags, len, &rc); + if (skb == NULL) return rc; - skb_reserve(skb, dev->tx_headroom + NFC_HEADER_SIZE); - rc = memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len); if (rc < 0) { kfree_skb(skb); |