Date: Fri, 4 Feb 2011 23:07:49 +0100 From: Michael Tuexen <tuexen@fh-muenster.de> To: "Robert N. M. Watson" <rwatson@freebsd.org> Cc: svn-src-head@freebsd.org, Randall Stewart <rrs@FreeBSD.org>, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r218211 - in head/sys: conf netinet Message-ID: <37716196-EE55-4D94-82BB-4DE19AAF34F2@fh-muenster.de> In-Reply-To: <1F9E5E6D-ADCA-4F43-B04D-54CCBD5AC2A8@freebsd.org> References: <201102031005.p13A5Vwi040803@svn.freebsd.org> <alpine.BSF.2.00.1102040639440.18938@fledge.watson.org> <FC0EBA69-26C9-450D-9B18-F2B4461364F7@fh-muenster.de> <1F9E5E6D-ADCA-4F43-B04D-54CCBD5AC2A8@freebsd.org>
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On Feb 4, 2011, at 11:00 PM, Robert N. M. Watson wrote: >=20 > On 4 Feb 2011, at 13:30, Michael Tuexen wrote: >=20 >>> Hmm. It might be better to add a new NETISR_SCTP and use netisr's = support for multithreading? >> That sounds really good. >>=20 >> Is it possible that different network cards put packets in the same = queue? >> That would be helpful in the case of SCTP. >>>=20 >>> (I'm preparing a patch for review that enhances that a bit so that = protocols can be a bit more expressive in terms of specifying dispatch = policy, etc, currently). >> Great! >=20 > You get a spectrum of possibilities -- protocols can request source = ordering (i.e., ifnet), flow ordering (in which they expose ordering = information but not CPU affinity), or a full CPU affinity. How work is = distributed and what queue it ends up in depends on the model, but yes, = you can request that interfaces distribute packets to various queues, = and that multiple interfaces use consistent distribution models. I = implement this for RSS, where there's a global RSS setup that is = propagated to supporting device drivers so that they can align their = distribution with the network stack's affinity model for connection = groups. That sounds great. Let us know when the code is ready for testing... Best regards Michael >=20 > Robert >=20 >=20
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