From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752885AbbJWJTE (ORCPT ); Fri, 23 Oct 2015 05:19:04 -0400 Received: from shards.monkeyblade.net ([149.20.54.216]:33339 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752134AbbJWJS6 (ORCPT ); Fri, 23 Oct 2015 05:18:58 -0400 Date: Fri, 23 Oct 2015 02:35:24 -0700 (PDT) Message-Id: <20151023.023524.817747898949803431.davem@davemloft.net> To: jasowang@redhat.com Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, mst@redhat.com, vyasevic@redhat.com Subject: Re: [PATCH net] macvtap: unbreak receiving of gro skb with frag list From: David Miller In-Reply-To: <1445576225-27710-1-git-send-email-jasowang@redhat.com> References: <1445576225-27710-1-git-send-email-jasowang@redhat.com> X-Mailer: Mew version 6.4 on Emacs 23.4 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Fri, 23 Oct 2015 02:18:58 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jason Wang Date: Fri, 23 Oct 2015 00:57:05 -0400 > We don't have fraglist support in TAP_FEATURES. This will lead > software segmentation of gro skb with frag list. Fixes by having > frag list support in TAP_FEATURES. > > With this patch single session of netperf receiving were restored from > about 5Gb/s to about 12Gb/s on mlx4. > > Fixes a567dd6252 ("macvtap: simplify usage of tap_features") > Cc: Vlad Yasevich > Cc: Michael S. Tsirkin > Signed-off-by: Jason Wang Applied and queued up for -stable, thanks Jason.