From mboxrd@z Thu Jan  1 00:00:00 1970
From: Glenn Griffin <ggriffin.kernel-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Subject: [PATCH v2] openvswitch: Fix L4 checksum handling when
 dealing with IP fragments
Date: Mon, 3 Aug 2015 09:56:54 -0700
Message-ID: <20150803165654.GA16892@google.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
To: Pravin Shelar <pshelar-l0M0P4e3n4LQT0dZR+AlfA@public.gmane.org>,
 "David S. Miller" <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>, netdev <netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
 "dev-yBygre7rU0TnMu66kgdUjQ@public.gmane.org" <dev-yBygre7rU0TnMu66kgdUjQ@public.gmane.org>,
 LKML <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Return-path: <dev-bounces-yBygre7rU0TnMu66kgdUjQ@public.gmane.org>
Content-Disposition: inline
List-Unsubscribe: <http://openvswitch.org/mailman/options/dev>,
 <mailto:dev-request-yBygre7rU0TnMu66kgdUjQ@public.gmane.org?subject=unsubscribe>
List-Archive: <http://openvswitch.org/pipermail/dev>
List-Post: <mailto:dev-yBygre7rU0TnMu66kgdUjQ@public.gmane.org>
List-Help: <mailto:dev-request-yBygre7rU0TnMu66kgdUjQ@public.gmane.org?subject=help>
List-Subscribe: <http://openvswitch.org/mailman/listinfo/dev>,
 <mailto:dev-request-yBygre7rU0TnMu66kgdUjQ@public.gmane.org?subject=subscribe>
Errors-To: dev-bounces-yBygre7rU0TnMu66kgdUjQ@public.gmane.org
Sender: "dev" <dev-bounces-yBygre7rU0TnMu66kgdUjQ@public.gmane.org>
List-Id: netdev.vger.kernel.org
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=