Commit 0a9f2a46 authored by Ilpo Järvinen's avatar Ilpo Järvinen Committed by David S. Miller

[TCP]: Verify the presence of RETRANS bit when leaving FRTO

For yet unknown reason, something cleared SACKED_RETRANS bit
underneath FRTO.
Signed-off-by: default avatarIlpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 063ed369
......@@ -1398,7 +1398,9 @@ static void tcp_enter_frto_loss(struct sock *sk, int allowed_segments, int flag)
* waiting for the first ACK and did not get it)...
*/
if ((tp->frto_counter == 1) && !(flag&FLAG_DATA_ACKED)) {
tp->retrans_out += tcp_skb_pcount(skb);
/* For some reason this R-bit might get cleared? */
if (TCP_SKB_CB(skb)->sacked & TCPCB_SACKED_RETRANS)
tp->retrans_out += tcp_skb_pcount(skb);
/* ...enter this if branch just for the first segment */
flag |= FLAG_DATA_ACKED;
} else {
......
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