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 2836AC433EF for ; Sat, 9 Apr 2022 11:42:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235414AbiDILou (ORCPT ); Sat, 9 Apr 2022 07:44:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32806 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229637AbiDILot (ORCPT ); Sat, 9 Apr 2022 07:44:49 -0400 Received: from Chamillionaire.breakpoint.cc (Chamillionaire.breakpoint.cc [IPv6:2a0a:51c0:0:12e:520::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4699117A9E for ; Sat, 9 Apr 2022 04:42:42 -0700 (PDT) Received: from fw by Chamillionaire.breakpoint.cc with local (Exim 4.92) (envelope-from ) id 1nd9UG-0007oD-RL; Sat, 09 Apr 2022 13:42:40 +0200 Date: Sat, 9 Apr 2022 13:42:40 +0200 From: Florian Westphal To: Topi Miettinen Cc: Florian Westphal , netfilter-devel@vger.kernel.org Subject: Re: [PATCH] doc: Document that kernel may accept unimplemented expressions Message-ID: <20220409114240.GG19371@breakpoint.cc> References: <20220409094402.22567-1-toiwoton@gmail.com> <20220409095152.GA19371@breakpoint.cc> <9277ac40-4175-62b3-d777-bdfa9434d187@gmail.com> <20220409102216.GF19371@breakpoint.cc> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: netfilter-devel@vger.kernel.org Topi Miettinen wrote: > Would it be possible to add such checks in the future? We could add socket skuid, socket skgid, its not hard. > Note that the kernel may accept expressions without errors even if it > doesn't implement the feature. For example, input chain filters using > expressions such as *meta skuid*, *meta skgid*, *meta cgroup* or Those can not be made to work. > *socket cgroupv2* are silently accepted but they don't work reliably socket should work, at least for tcp and udp. The cgroupv2 is buggy. I sent a patch, feel free to test it.