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-rw-r--r--net/ipv4/tcp_recovery.c19
1 files changed, 8 insertions, 11 deletions
diff --git a/net/ipv4/tcp_recovery.c b/net/ipv4/tcp_recovery.c
index 0c182303e62e..3a81720ac0c4 100644
--- a/net/ipv4/tcp_recovery.c
+++ b/net/ipv4/tcp_recovery.c
@@ -117,13 +117,8 @@ void tcp_rack_advance(struct tcp_sock *tp, u8 sacked, u32 end_seq,
{
u32 rtt_us;
- if (tp->rack.mstamp &&
- !tcp_rack_sent_after(xmit_time, tp->rack.mstamp,
- end_seq, tp->rack.end_seq))
- return;
-
rtt_us = tcp_stamp_us_delta(tp->tcp_mstamp, xmit_time);
- if (sacked & TCPCB_RETRANS) {
+ if (rtt_us < tcp_min_rtt(tp) && (sacked & TCPCB_RETRANS)) {
/* If the sacked packet was retransmitted, it's ambiguous
* whether the retransmission or the original (or the prior
* retransmission) was sacked.
@@ -134,13 +129,15 @@ void tcp_rack_advance(struct tcp_sock *tp, u8 sacked, u32 end_seq,
* so it's at least one RTT (i.e., retransmission is at least
* an RTT later).
*/
- if (rtt_us < tcp_min_rtt(tp))
- return;
+ return;
}
- tp->rack.rtt_us = rtt_us;
- tp->rack.mstamp = xmit_time;
- tp->rack.end_seq = end_seq;
tp->rack.advanced = 1;
+ tp->rack.rtt_us = rtt_us;
+ if (tcp_rack_sent_after(xmit_time, tp->rack.mstamp,
+ end_seq, tp->rack.end_seq)) {
+ tp->rack.mstamp = xmit_time;
+ tp->rack.end_seq = end_seq;
+ }
}
/* We have waited long enough to accommodate reordering. Mark the expired