From 4ce4091256d61f8e9c7296f6643c8bd5bb2a00e5 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Fri, 18 Nov 2011 02:20:05 +0000 Subject: [PATCH] packet: Add needed_tailroom to packet_sendmsg_spkt packet: Add needed_tailroom to packet_sendmsg_spkt While auditing LL_ALLOCATED_SPACE I noticed that packet_sendmsg_spkt did not include needed_tailroom when allocating an skb. This isn't a fatal error as we should always tolerate inadequate tail room but it isn't optimal. This patch fixes that. Signed-off-by: Herbert Xu Signed-off-by: David S. Miller --- net/packet/af_packet.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index 71c1a7521d32..0da505c9ac23 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -1499,10 +1499,11 @@ retry: if (!skb) { size_t reserved = LL_RESERVED_SPACE(dev); + int tlen = dev->needed_tailroom; unsigned int hhlen = dev->header_ops ? dev->hard_header_len : 0; rcu_read_unlock(); - skb = sock_wmalloc(sk, len + reserved, 0, GFP_KERNEL); + skb = sock_wmalloc(sk, len + reserved + tlen, 0, GFP_KERNEL); if (skb == NULL) return -ENOBUFS; /* FIXME: Save some space for broken drivers that write a hard -- 2.20.1