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| author | Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> | 2008-09-20 21:25:15 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-09-20 21:25:15 -0700 |
| commit | ef9da47c7cc64d69526331f315e76b5680d4048f (patch) | |
| tree | 97407b83c7c339dbe1fd0948c30f35e1680562ec /net/ipv4/tcp_input.c | |
| parent | f0ceb0ed86b4792a4ed9d3438f5f7572e48f9803 (diff) | |
| download | kernel_samsung_tuna-ef9da47c7cc64d69526331f315e76b5680d4048f.zip kernel_samsung_tuna-ef9da47c7cc64d69526331f315e76b5680d4048f.tar.gz kernel_samsung_tuna-ef9da47c7cc64d69526331f315e76b5680d4048f.tar.bz2 | |
tcp: don't clear retransmit_skb_hint when not necessary
Most importantly avoid doing it with cumulative ACK. Not clearing
means that we no longer need n^2 processing in resolution of each
fast recovery.
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 | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index d017aed..44a4fff 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -2925,7 +2925,9 @@ static int tcp_clean_rtx_queue(struct sock *sk, int prior_fackets) tcp_unlink_write_queue(skb, sk); sk_wmem_free_skb(sk, skb); - tcp_clear_all_retrans_hints(tp); + tcp_clear_retrans_hints_partial(tp); + if (skb == tp->retransmit_skb_hint) + tp->retransmit_skb_hint = NULL; } if (skb && (TCP_SKB_CB(skb)->sacked & TCPCB_SACKED_ACKED)) |