diff options
| author | Kenneth Klette Jonassen <kennetkl@ifi.uio.no> | 2015-05-01 02:10:59 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-05-04 06:18:01 +0300 |
| commit | 138998fdd12e7362756e158d00856a2aabd5f0c1 (patch) | |
| tree | 6cdf2b4989efdd1ef26dada62d5b4b6c1c3e1d72 | |
| parent | 31231a8a873026410eab438c5757430546a517d1 (diff) | |
| download | linux-138998fdd12e7362756e158d00856a2aabd5f0c1.tar.xz | |
tcp: invoke pkts_acked hook on every ACK
Invoking pkts_acked is currently conditioned on FLAG_ACKED:
receiving a cumulative ACK of new data, or ACK with SYN flag set.
Remove this condition so that CC may get RTT measurements from all SACKs.
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Kenneth Klette Jonassen <kennetkl@ifi.uio.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv4/tcp_input.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index f563d2a88809..09bdc4abfcbb 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -3159,9 +3159,6 @@ static int tcp_clean_rtx_queue(struct sock *sk, int prior_fackets, rtt_update = tcp_ack_update_rtt(sk, flag, seq_rtt_us, sack_rtt_us); if (flag & FLAG_ACKED) { - const struct tcp_congestion_ops *ca_ops - = inet_csk(sk)->icsk_ca_ops; - tcp_rearm_rto(sk); if (unlikely(icsk->icsk_mtup.probe_size && !after(tp->mtu_probe.probe_seq_end, tp->snd_una))) { @@ -3184,9 +3181,6 @@ static int tcp_clean_rtx_queue(struct sock *sk, int prior_fackets, tp->fackets_out -= min(pkts_acked, tp->fackets_out); - if (ca_ops->pkts_acked) - ca_ops->pkts_acked(sk, pkts_acked, ca_rtt_us); - } else if (skb && rtt_update && sack_rtt_us >= 0 && sack_rtt_us > skb_mstamp_us_delta(&now, &skb->skb_mstamp)) { /* Do not re-arm RTO if the sack RTT is measured from data sent @@ -3196,6 +3190,9 @@ static int tcp_clean_rtx_queue(struct sock *sk, int prior_fackets, tcp_rearm_rto(sk); } + if (icsk->icsk_ca_ops->pkts_acked) + icsk->icsk_ca_ops->pkts_acked(sk, pkts_acked, ca_rtt_us); + #if FASTRETRANS_DEBUG > 0 WARN_ON((int)tp->sacked_out < 0); WARN_ON((int)tp->lost_out < 0); |