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[TCP]: Fix mark_head_lost to ignore R-bit when trying to mark L 

This condition (plain R) can arise at least in recovery that
is triggered after tcp_undo_loss. There isn't any reason why
they should not be marked as lost, not marking makes in_flight
estimator to return too large values.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ilpo Järvinen 2007-10-11 17:33:11 -07:00 committed by David S. Miller
parent 16e906812f
commit 3eec0047d9
1 changed files with 1 additions and 1 deletions
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2
net/ipv4/tcp_input.c
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@ -1987,7 +1987,7 @@ static void tcp_mark_head_lost(struct sock *sk,
cnt += tcp_skb_pcount(skb);
if (cnt > packets || after(TCP_SKB_CB(skb)->end_seq, high_seq))
break;
if (!(TCP_SKB_CB(skb)->sacked&TCPCB_TAGBITS)) {
if (!(TCP_SKB_CB(skb)->sacked & (TCPCB_SACKED_ACKED|TCPCB_LOST))) {
TCP_SKB_CB(skb)->sacked |= TCPCB_LOST;
tp->lost_out += tcp_skb_pcount(skb);
tcp_verify_retransmit_hint(tp, skb);