From owner-freebsd-arch@FreeBSD.ORG  Sun Aug  3 00:48:32 2014
Return-Path: <owner-freebsd-arch@FreeBSD.ORG>
Delivered-To: freebsd-arch@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id B43182E8;
 Sun,  3 Aug 2014 00:48:32 +0000 (UTC)
Received: from mail-qg0-x22c.google.com (mail-qg0-x22c.google.com
 [IPv6:2607:f8b0:400d:c04::22c])
 (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits))
 (Client CN "smtp.gmail.com",
 Issuer "Google Internet Authority G2" (verified OK))
 by mx1.freebsd.org (Postfix) with ESMTPS id 68E5C23F3;
 Sun,  3 Aug 2014 00:48:32 +0000 (UTC)
Received: by mail-qg0-f44.google.com with SMTP id e89so7471620qgf.17
 for <multiple recipients>; Sat, 02 Aug 2014 17:48:31 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113;
 h=mime-version:sender:date:message-id:subject:from:to:content-type;
 bh=GJZ26BbHCzuoGVWetmXAulBlrlqHDfHes/J0/AjEyVc=;
 b=laDlfLhEBNyPaaJb6mGB9cqShJFWehFx1kJ2k/Y4bMQ6B49xkQ4+/hIYyBqnykD2DA
 Lv1li6tUb5aJM4+yGiMEV+sEfq7YoU4aqPlWVrWNc2hZchWCTAjxF3HYYARGk44R9znB
 Wf6w3MniqOSUq7jst2bXIRdQztSyrLTdHVxhYGq89kv/ks3Ty1ACF6ih0BB4I5nFDmdk
 bmnpgXlNcr0P4DJJj8ERyNnVtBjpCHnV7zcKx1q362kLsHpTieMbLiOydF+dT0VA9wWf
 m/bdUe/re7/+o+lrCOTIXTYE51bRhAmM70497QinB4YUlYRQCkzD98LAR8WKFEpPw99W
 uQ8Q==
MIME-Version: 1.0
X-Received: by 10.224.55.131 with SMTP id u3mr23103065qag.98.1407026911560;
 Sat, 02 Aug 2014 17:48:31 -0700 (PDT)
Sender: adrian.chadd@gmail.com
Received: by 10.224.1.6 with HTTP; Sat, 2 Aug 2014 17:48:31 -0700 (PDT)
Date: Sat, 2 Aug 2014 17:48:31 -0700
X-Google-Sender-Auth: O0AGsM1IjsDd0SXMzZ_GMC0nz8E
Message-ID: <CAJ-Vmom10h3hOEqd=XbF69k-wHpmhmJ70aJxmVv=qGfh+RA+qw@mail.gmail.com>
Subject: [rfc] UDP RSS awareness; handling IPv4 fragments
From: Adrian Chadd <adrian@freebsd.org>
To: FreeBSD Net <freebsd-net@freebsd.org>, 
 "freebsd-arch@freebsd.org" <freebsd-arch@freebsd.org>
Content-Type: text/plain; charset=UTF-8
X-BeenThere: freebsd-arch@freebsd.org
X-Mailman-Version: 2.1.18
Precedence: list
List-Id: Discussion related to FreeBSD architecture <freebsd-arch.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-arch>,
 <mailto:freebsd-arch-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-arch/>
List-Post: <mailto:freebsd-arch@freebsd.org>
List-Help: <mailto:freebsd-arch-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-arch>,
 <mailto:freebsd-arch-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 03 Aug 2014 00:48:32 -0000

Hi!

http://people.freebsd.org/~adrian/rss/20140802-rss-udp-ip-fragments-1.diff

This implements the RSS awareness bits for UDPv4, UDPv6 and IP
fragment handling. It should work for UDP transmit and receive.

There's a phabricator review: https://phabric.freebsd.org/D527

I'll finish off IPv6 RSS after this and then look at the various ways
that packets make their way in and out of the stack. There's a whole
lot of silliness with multicast and IP tunneling / IPSEC decapsulation
that requires a recompute of the hash.

I appreciate any/all feedback and testing! Especially testing!

Thanks!


-a