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[IPV4]: Fix ip_queue_xmit identity increment for TSO packets

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When ip_queue_xmit calls ip_select_ident_more for IP identity selection
it gives it the wrong packet count for TSO packets.  The ip_select_*
functions expect one less than the number of packets, so we need to
subtract one for TSO packets.

This bug was diagnosed and fixed by Tom Young.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Herbert Xu 2005-11-08 09:41:56 -08:00 committed by David S. Miller
parent a51482bde2
commit 89f5f0aeed
1 changed files with 2 additions and 1 deletions
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3
net/ipv4/ip_output.c
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@ -353,7 +353,8 @@ int ip_queue_xmit(struct sk_buff *skb, int ipfragok)
ip_options_build(skb, opt, inet->daddr, rt, 0);
}
ip_select_ident_more(iph, &rt->u.dst, sk, skb_shinfo(skb)->tso_segs);
ip_select_ident_more(iph, &rt->u.dst, sk,
(skb_shinfo(skb)->tso_segs ?: 1) - 1);
/* Add an IP checksum. */
ip_send_check(iph);