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Date: Tue, 4 Jan 2011 13:12:09 +0400 From: Gaspar Chilingarov <gasparch@...il.com> To: Daniel Baluta <daniel.baluta@...il.com> Cc: netdev <netdev@...r.kernel.org>, "eric.dumazet" <eric.dumazet@...il.com> Subject: Re: 'tcp: bind() fix when many ports are bound' problem Hi there! Well, that looks strange. On my own side I've just put workaround (manually binding to all ports in sequence :) and moved production code to FreeBSD as it has better scalable network stack. I can see the potential problem with that bind() problem on highly loaded DNS servers/resolvers which establish tons of outgoing UDP connections. In some cases that connections could fail and as not receiving the answer it is normal condition for DNS this will go totally unnoticed. I don't think anyone will hit this bug in production environment except the very high load applications. /Gaspar 2011/1/4 Daniel Baluta <daniel.baluta@...il.com>: > Hi, > > After a series of discussions [1], Eric provided > "tcp: bind() fix when many ports are bound" patch. ([2]) > > Anyhow, due to this problem ([3]) it was reverted. > Where there any follow ups on this patch? > > I have spent some time looking at inet_csk_get_port with the > only conclusion that it's scary :D. > > Should I work around patch "tcp: bind() fix when many ports are bound", > and try to fix problem [3], or is that a dead end? > > thanks, > Daniel. > > [1] http://kerneltrap.org/mailarchive/linux-netdev/2010/4/20/6275120 > [2] http://kerneltrap.org/mailarchive/git-commits-head/2010/4/24/32191 > [3] http://kerneltrap.org/mailarchive/linux-kernel/2010/4/28/4563937 > -- Gaspar Chilingarov tel +37493 419763 (mobile - leave voice mail message) icq 63174784 skype://gasparch e mailto:nm@....am mailto:gasparch@...il.com w http://gasparchilingarov.com/ -- 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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