Date: Fri, 4 Feb 2011 14:00:04 -0800 From: "Robert N. M. Watson" <rwatson@freebsd.org> To: Michael Tuexen <tuexen@fh-muenster.de> 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: <1F9E5E6D-ADCA-4F43-B04D-54CCBD5AC2A8@freebsd.org> In-Reply-To: <FC0EBA69-26C9-450D-9B18-F2B4461364F7@fh-muenster.de> References: <201102031005.p13A5Vwi040803@svn.freebsd.org> <alpine.BSF.2.00.1102040639440.18938@fledge.watson.org> <FC0EBA69-26C9-450D-9B18-F2B4461364F7@fh-muenster.de>
next in thread | previous in thread | raw e-mail | index | archive | help
On 4 Feb 2011, at 13:30, Michael Tuexen wrote: >> 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! 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. Robert
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?1F9E5E6D-ADCA-4F43-B04D-54CCBD5AC2A8>