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tcp: reserve tcp_skb_mss() to tcp stack

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tcp_gso_segment() and tcp_gro_receive() are not strictly
part of TCP stack. They should not assume tcp_skb_mss(skb)
is in fact skb_shinfo(skb)->gso_size.

This will allow us to change tcp_skb_mss() in following patches.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2015-06-11 09:15:15 -07:00 committed by David S. Miller
parent 57225e7720
commit a7eea416cb
1 changed files with 2 additions and 2 deletions
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4
net/ipv4/tcp_offload.c
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@ -77,7 +77,7 @@ struct sk_buff *tcp_gso_segment(struct sk_buff *skb,
oldlen = (u16)~skb->len;
__skb_pull(skb, thlen);
mss = tcp_skb_mss(skb);
mss = skb_shinfo(skb)->gso_size;
if (unlikely(skb->len <= mss))
goto out;
@ -242,7 +242,7 @@ struct sk_buff **tcp_gro_receive(struct sk_buff **head, struct sk_buff *skb)
flush |= *(u32 *)((u8 *)th + i) ^
*(u32 *)((u8 *)th2 + i);
mss = tcp_skb_mss(p);
mss = skb_shinfo(p)->gso_size;
flush |= (len - 1) >= mss;
flush |= (ntohl(th2->seq) + skb_gro_len(p)) ^ ntohl(th->seq);