Date: Tue, 15 Jul 2014 15:33:19 +0400 From: Slawa Olhovchenkov <slw@zxy.spb.ru> To: freebsd-arch@freebsd.org Subject: Re: UDP/TCP versus IP frames - subtle out of order packets with hardware hashing Message-ID: <20140715113319.GA96254@zxy.spb.ru> In-Reply-To: <53C507F2.2090604@gmail.com> References: <CAJ-VmomUNJ23CHLLX2qryAuE2XQyBmo30du3MuRnobs%2BwEkguA@mail.gmail.com> <53C4EE00.5090705@gmail.com> <20140715093125.GA89128@zxy.spb.ru> <53C507F2.2090604@gmail.com>
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On Tue, Jul 15, 2014 at 03:22:34PM +0430, Hooman Fazaeli wrote: > On 7/15/2014 2:01 PM, Slawa Olhovchenkov wrote: > > On Tue, Jul 15, 2014 at 01:31:52PM +0430, Hooman Fazaeli wrote: > > > >> Doesn't the problem applies to TCP too? > >> TCP may be fragmented too but is less likely because of MSS. > > Don't forget GRE, IPIP, ESP and AH! > > > These protocols don't use port numbers and the RSS hash is computed based on the > (srcip,dstip) tuple, so the problem does not apply to them. And all flows go to one queue? Bad.
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