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| author | Ilpo Järvinen | 2008-09-21 06:25:52 +0200 |
|---|---|---|
| committer | David S. Miller | 2008-09-21 06:25:52 +0200 |
| commit | 90638a04ad8484b6b6c567656fb3f6d0689e23da (patch) | |
| tree | 87a14ffe430d4663ec4df268459c78d07a4e75a2 /net/ipv4/tcp_output.c | |
| parent | tcp: don't clear retransmit_skb_hint when not necessary (diff) | |
| download | kernel-qcow2-linux-90638a04ad8484b6b6c567656fb3f6d0689e23da.tar.gz kernel-qcow2-linux-90638a04ad8484b6b6c567656fb3f6d0689e23da.tar.xz kernel-qcow2-linux-90638a04ad8484b6b6c567656fb3f6d0689e23da.zip | |
tcp: don't clear lost_skb_hint when not necessary
Most importantly avoid doing it with cumulative ACK. However,
since we have lost_cnt_hint in the picture as well needing
adjustments, it's not as trivial as dealing with
retransmit_skb_hint (and cannot be done in the all place we
could trivially leave retransmit_skb_hint untouched).
With the previous patch, this should mostly remove O(n^2)
behavior while cumulative ACKs start flowing once rexmit
after a lossy round-trip made it through.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_output.c')
0 files changed, 0 insertions, 0 deletions