tcp: Make shifting not clear the hints

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The earlier version was just very basic one which is "playing
safe" by always clearing the hints. However, clearing of a hint
is extremely costly operation with large windows, so it must be
avoided at all cost whenever possible, there is a way with
shifting too achieve not-clearing.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Ilpo Järvinen 2008-11-24 21:26:56 -08:00 • committed by David S. Miller

parent 832d11c5cd

commit 92ee76b6d9

1 changed files with 14 additions and 2 deletions

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net/ipv4/tcp_input.c

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