[TCP]: Two fixes to new sacktag code

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1) Skip condition used to be wrong way around which made SACK
processing very broken, missed many blocks because of that.

2) Use highest_sack advancement only if some skbs are already
sacked because otherwise tcp_write_queue_next may move things
too far (occurs mainly with GSO). The other similar advancement
is not problem because highest_sack was previosly put to point
a sacked skb.

These problems were located because of problem report from Matt
Mathis <mathis@psc.edu>.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Ilpo Järvinen 2007-11-30 00:59:07 +11:00 • committed by David S. Miller

parent df1b86c53d

commit ea4f76ae13

1 changed files with 2 additions and 2 deletions

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net/ipv4/tcp_input.c

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