From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755314AbcI2Pjk convert rfc822-to-8bit (ORCPT ); Thu, 29 Sep 2016 11:39:40 -0400 Received: from katalix.com ([82.103.140.233]:49243 "EHLO mail.katalix.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754474AbcI2Pjd (ORCPT ); Thu, 29 Sep 2016 11:39:33 -0400 Subject: Re: [PATCH net v2] L2TP:Adjust intf MTU,factor underlay L3,overlay L2 To: "R. Parameswaran" References: <20160927.033153.1066118008027608891.davem@davemloft.net> <20160928.034841.997752666320557327.davem@davemloft.net> Cc: David Miller , kleptog@svana.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, nprachan@brocade.com, rshearma@brocade.com, dfawcus@brocade.com, stephen@networkplumber.org, acme@redhat.com, lboccass@brocade.com From: James Chapman Organization: Katalix Systems Ltd Message-ID: <57ED35A9.7080604@katalix.com> Date: Thu, 29 Sep 2016 16:39:21 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 29/09/16 03:36, R. Parameswaran wrote: > I agree that something like 2. below would be needed in the long run (it > will need some effort and redesign -e.g. how do I lookup the parent tunnel > from the socket when receiving a PMTU update, existing pointer chain runs > from tunnel to socket). >> 2) Add code to handle PMTU events that land on the UDP tunnel >> socket. Another function pointer could be added to struct udp_sock, similar to encap_rcv, such that the pmtu event could be handled by the UDP encap protocol implementation. James