From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH net v2 0/2] net: ipv4: fixes for PMTU when link MTU changes Date: Wed, 10 Oct 2018 22:45:28 -0700 (PDT) Message-ID: <20181010.224528.939874574357827165.davem@davemloft.net> References: Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, dsahern@gmail.com, sbrivio@redhat.com To: sd@queasysnail.net Return-path: Received: from shards.monkeyblade.net ([23.128.96.9]:49124 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727528AbeJKNLI (ORCPT ); Thu, 11 Oct 2018 09:11:08 -0400 In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: From: Sabrina Dubroca Date: Tue, 9 Oct 2018 17:48:13 +0200 > The first patch adapts the changes that commit e9fa1495d738 ("ipv6: > Reflect MTU changes on PMTU of exceptions for MTU-less routes") did in > IPv6 to IPv4: lower PMTU when the first hop's MTU drops below it, and > raise PMTU when the first hop was limiting PMTU discovery and its MTU > is increased. > > The second patch fixes bugs introduced in commit d52e5a7e7ca4 ("ipv4: > lock mtu in fnhe when received PMTU < net.ipv4.route.min_pmtu") that > only appear once the first patch is applied. > > Selftests for these cases were introduced in net-next commit > e44e428f59e4 ("selftests: pmtu: add basic IPv4 and IPv6 PMTU tests") > > v2: add cover letter, and fix a few small things in patch 1 Series applied and queued up for -stable.