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由 Ilpo Järvinen 提交于
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: NIlpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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