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| author | Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> | 2007-12-05 02:21:35 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-12-05 05:37:30 -0800 |
| commit | 52d3408150858a301a84bcbfe2f323d90d71d2ce (patch) | |
| tree | 275691a21b251220257fac8932f71e77dbafbbc4 /net/ipv4/tcp_input.c | |
| parent | 3e6f049e0c4cf0606207c1a210abf50b436e9adf (diff) | |
| download | blackbird-op-linux-52d3408150858a301a84bcbfe2f323d90d71d2ce.tar.gz blackbird-op-linux-52d3408150858a301a84bcbfe2f323d90d71d2ce.zip | |
[TCP]: Move prior_in_flight collect to more robust place
The previous location is after sacktag processing, which affects
counters tcp_packets_in_flight depends on. This may manifest as
wrong behavior if new SACK blocks are present and all is clear
for call to tcp_cong_avoid, which in the case of
tcp_reno_cong_avoid bails out early because it thinks that
TCP is not limited by cwnd.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_input.c')
| -rw-r--r-- | net/ipv4/tcp_input.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 094f8fafaf53..b9e429d2d1de 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -3065,6 +3065,7 @@ static int tcp_ack(struct sock *sk, struct sk_buff *skb, int flag) } prior_fackets = tp->fackets_out; + prior_in_flight = tcp_packets_in_flight(tp); if (!(flag&FLAG_SLOWPATH) && after(ack, prior_snd_una)) { /* Window is constant, pure forward advance. @@ -3104,8 +3105,6 @@ static int tcp_ack(struct sock *sk, struct sk_buff *skb, int flag) if (!prior_packets) goto no_queue; - prior_in_flight = tcp_packets_in_flight(tp); - /* See if we can take anything off of the retransmit queue. */ flag |= tcp_clean_rtx_queue(sk, &seq_rtt, prior_fackets); |
