diff options
| author |   Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> | 2007-02-21 23:14:42 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@sunset.davemloft.net> | 2007-04-25 22:23:15 -0700 |
| commit | 288035f915686a9a9e85e0358c5392bb5d7ae58d (patch) | |
| tree | fcf6684a8750e12f5bb9d3a7f70062a574b3ff03 /net/ipv4/tcp_input.c | |
| parent | [TCP] FRTO: Fake cwnd for ssthresh callback (diff) | |
| download | linux-dev-288035f915686a9a9e85e0358c5392bb5d7ae58d.tar.xz linux-dev-288035f915686a9a9e85e0358c5392bb5d7ae58d.zip | |
[TCP]: Prevent reordering adjustments during FRTO
To be honest, I'm not too sure how the reord stuff works in the
first place but this seems necessary.
When FRTO has been active, the one and only retransmission could
be unnecessary but the state and sending order might not be what
the sacktag code expects it to be (to work correctly).
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | net/ipv4/tcp_input.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 055721d8495e..df516d4eca96 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -1224,7 +1224,8 @@ tcp_sacktag_write_queue(struct sock *sk, struct sk_buff *ack_skb, u32 prior_snd_ tp->left_out = tp->sacked_out + tp->lost_out; - if ((reord < tp->fackets_out) && icsk->icsk_ca_state != TCP_CA_Loss) + if ((reord < tp->fackets_out) && icsk->icsk_ca_state != TCP_CA_Loss && + (tp->frto_highmark && after(tp->snd_una, tp->frto_highmark))) tcp_update_reordering(sk, ((tp->fackets_out + 1) - reord), 0); #if FASTRETRANS_DEBUG > 0 |