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[TCP] Allow len == skb->len in tcp_fragment 

It is legitimate to call tcp_fragment with len == skb->len since
that is done for FIN packets and the FIN flag counts as one byte.
So we should only check for the len > skb->len case.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
hifive-unleashed-5.1
Herbert Xu 2005-10-20 17:13:13 -02:00 committed by Arnaldo Carvalho de Melo
parent 49c5bfaffe
commit b2cc99f04c
1 changed files with 1 additions and 11 deletions
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12
net/ipv4/tcp_output.c
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@ -435,17 +435,7 @@ int tcp_fragment(struct sock *sk, struct sk_buff *skb, u32 len, unsigned int mss
int nsize, old_factor;
u16 flags;
if (unlikely(len >= skb->len)) {
if (net_ratelimit()) {
printk(KERN_DEBUG "TCP: seg_size=%u, mss=%u, seq=%u, "
"end_seq=%u, skb->len=%u.\n", len, mss_now,
TCP_SKB_CB(skb)->seq, TCP_SKB_CB(skb)->end_seq,
skb->len);
WARN_ON(1);
}
return 0;
}
BUG_ON(len > skb->len);
nsize = skb_headlen(skb) - len;
if (nsize < 0)
nsize = 0;