Commit 3eec0047 authored by Ilpo Järvinen's avatar Ilpo Järvinen Committed by David S. Miller
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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: default avatarIlpo Järvinen <>
Signed-off-by: default avatarDavid S. Miller <>
parent 16e90681
......@@ -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))
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);
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