From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BC130C00528 for ; Fri, 28 Jul 2023 09:53:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233978AbjG1JxW (ORCPT ); Fri, 28 Jul 2023 05:53:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59158 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233888AbjG1Jwy (ORCPT ); Fri, 28 Jul 2023 05:52:54 -0400 Received: from Chamillionaire.breakpoint.cc (Chamillionaire.breakpoint.cc [IPv6:2a0a:51c0:0:237:300::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0DA6411D; Fri, 28 Jul 2023 02:52:53 -0700 (PDT) Received: from fw by Chamillionaire.breakpoint.cc with local (Exim 4.92) (envelope-from ) id 1qPK9K-0001Yf-9S; Fri, 28 Jul 2023 11:52:42 +0200 Date: Fri, 28 Jul 2023 11:52:42 +0200 From: Florian Westphal To: Daniel Xu Cc: daniel@iogearbox.net, kadlec@netfilter.org, edumazet@google.com, ast@kernel.org, fw@strlen.de, kuba@kernel.org, pabeni@redhat.com, pablo@netfilter.org, andrii@kernel.org, davem@davemloft.net, alexei.starovoitov@gmail.com, martin.lau@linux.dev, song@kernel.org, yhs@fb.com, john.fastabend@gmail.com, kpsingh@kernel.org, sdf@google.com, haoluo@google.com, jolsa@kernel.org, bpf@vger.kernel.org, linux-kernel@vger.kernel.org, netfilter-devel@vger.kernel.org, coreteam@netfilter.org, netdev@vger.kernel.org, dsahern@kernel.org Subject: Re: [PATCH bpf-next v6 2/5] netfilter: bpf: Support BPF_F_NETFILTER_IP_DEFRAG in netfilter link Message-ID: <20230728095242.GB15474@breakpoint.cc> References: <5cff26f97e55161b7d56b09ddcf5f8888a5add1d.1689970773.git.dxu@dxuuu.xyz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5cff26f97e55161b7d56b09ddcf5f8888a5add1d.1689970773.git.dxu@dxuuu.xyz> User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Daniel Xu wrote: > This commit adds support for enabling IP defrag using pre-existing > netfilter defrag support. Basically all the flag does is bump a refcnt > while the link the active. Checks are also added to ensure the prog > requesting defrag support is run _after_ netfilter defrag hooks. > > We also take care to avoid any issues w.r.t. module unloading -- while > defrag is active on a link, the module is prevented from unloading. Reviewed-by: Florian Westphal