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authorHerbert Xu <herbert@gondor.apana.org.au>2009-01-04 16:13:19 -0800
committerDavid S. Miller <davem@davemloft.net>2009-01-04 16:13:19 -0800
commitb530256d2e0f1a75fab31f9821129fff1bb49faa (patch)
treee3e615d405921fc157169180d53c91d09b9a7186 /net/ipv4/tcp.c
parentcfc3a44c3c32abe48898398d9a92e8524c976803 (diff)
downloadlinux-b530256d2e0f1a75fab31f9821129fff1bb49faa.tar.bz2
gro: Use gso_size to store MSS
In order to allow GRO packets without frag_list at all, we need to store the MSS in the packet itself. The obvious place is gso_size. The only thing to watch out for is if the packet ends up not being GRO then we need to clear gso_size before pushing the packet into the stack. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp.c')
-rw-r--r--net/ipv4/tcp.c5
1 files changed, 1 insertions, 4 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index f28acf11fc67..4d655e945413 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2519,9 +2519,7 @@ found:
flush |= memcmp(th + 1, th2 + 1, thlen - sizeof(*th));
total = p->len;
- mss = total;
- if (skb_shinfo(p)->frag_list)
- mss = skb_shinfo(p)->frag_list->len;
+ mss = skb_shinfo(p)->gso_size;
flush |= skb->len > mss || skb->len <= 0;
flush |= ntohl(th2->seq) + total != ntohl(th->seq);
@@ -2557,7 +2555,6 @@ int tcp_gro_complete(struct sk_buff *skb)
skb->csum_offset = offsetof(struct tcphdr, check);
skb->ip_summed = CHECKSUM_PARTIAL;
- skb_shinfo(skb)->gso_size = skb_shinfo(skb)->frag_list->len;
skb_shinfo(skb)->gso_segs = NAPI_GRO_CB(skb)->count;
if (th->cwr)