From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH] net: introduce SO_BPF_EXTENSIONS Date: Fri, 06 Dec 2013 12:10:04 -0500 (EST) Message-ID: <20131206.121004.406077340286411332.davem@davemloft.net> References: <1386264770.30495.204.camel@edumazet-glaptop2.roam.corp.google.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: eric.dumazet@gmail.com, sekletar.m@gmail.com, dborkman@redhat.com, msekleta@redhat.com, netdev@vger.kernel.org, mtk.manpages@gmail.com To: David.Laight@ACULAB.COM Return-path: Received: from shards.monkeyblade.net ([149.20.54.216]:40187 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754412Ab3LFRKG (ORCPT ); Fri, 6 Dec 2013 12:10:06 -0500 In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: From: "David Laight" Date: Fri, 6 Dec 2013 09:50:49 -0000 >> if SO_BPF_EXTENSIONS is supported, than you can assume that all current >> extensions are supported. >> >> No need to consume one bit per feature, as all these features wont ever >> disappear from linux. > > However one of the BSDs could add a subset of the features and > wish to advertise the fact. > So using extra flags for non-trivial extensions could be useful. Sorry, we're not going to accomodate this.