From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH net] macvtap: unbreak receiving of gro skb with frag list Date: Fri, 23 Oct 2015 02:35:24 -0700 (PDT) Message-ID: <20151023.023524.817747898949803431.davem@davemloft.net> References: <1445576225-27710-1-git-send-email-jasowang@redhat.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, mst@redhat.com, vyasevic@redhat.com To: jasowang@redhat.com Return-path: 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 In-Reply-To: <1445576225-27710-1-git-send-email-jasowang@redhat.com> Sender: netdev-owner@vger.kernel.org List-ID: 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.