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Date: Wed, 28 Feb 2007 13:08:08 -0800 From: Stephen Hemminger <shemminger@...ux-foundation.org> To: David Miller <davem@...emloft.net> Cc: netdev@...r.kernel.org Subject: Re: [PATCH 4/4]: Kill fastpath_{skb,cnt}_hint. On Wed, 28 Feb 2007 11:49:49 -0800 (PST) David Miller <davem@...emloft.net> wrote: > > commit 71b270d966cd42e29eabcd39434c4ad4d33aa2be > Author: David S. Miller <davem@...set.davemloft.net> > Date: Tue Feb 27 19:28:07 2007 -0800 > > [TCP]: Kill fastpath_{skb,cnt}_hint. > > Now that we have per-skb fack_counts and an interval > search mechanism for the retransmit queue, we don't > need these things any more. > > Instead, as we traverse the SACK blocks to tag the > queue, we use the RB tree to lookup the first SKB > covering the SACK block by sequence number. > > Signed-off-by: David S. Miller <davem@...emloft.net> I would be happy to see this go. Have you tried this code with a SACK DoS stream? I.e. before you could consume a huge amount of cpu time by giving an certain bad sequence of SACK's. This code should have a better worst case run time. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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