From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH 0/2] net: Consider fragmentation of udp tunneled skbs in 'ip_finish_output_gso' Date: Tue, 19 Jul 2016 16:40:34 -0700 (PDT) Message-ID: <20160719.164034.1813590621318818547.davem@davemloft.net> References: <1468842574-1243-1-git-send-email-shmulik.ladkani@gmail.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, shmulik.ladkani@ravellosystems.com, edumazet@google.com, hannes@stressinduktion.org, fw@strlen.de To: shmulik.ladkani@gmail.com Return-path: Received: from shards.monkeyblade.net ([184.105.139.130]:40772 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752406AbcGSXkg (ORCPT ); Tue, 19 Jul 2016 19:40:36 -0400 In-Reply-To: <1468842574-1243-1-git-send-email-shmulik.ladkani@gmail.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Shmulik Ladkani Date: Mon, 18 Jul 2016 14:49:32 +0300 > Currently IP fragmentation of GSO segments that exceed dst mtu is > considered only in the ipv4 forwarding case. > > There are cases where GSO skbs that are bridged and then udp-tunneled > may have gso_size exceeding the egress device mtu. > It makes sense to fragment them, as in the non GSOed code path. > > The exact cases where this behavior is needed is described and addressed > in the 2nd patch. Series applied, thanks.