Commit b2cc99f0 authored by Herbert Xu's avatar Herbert Xu Committed by Arnaldo Carvalho de Melo

[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: default avatarHerbert Xu <>
Signed-off-by: default avatarArnaldo Carvalho de Melo <>
parent 49c5bfaf
......@@ -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,
return 0;
BUG_ON(len > skb->len);
nsize = skb_headlen(skb) - len;
if (nsize < 0)
nsize = 0;
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