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 D0742CDB465 for ; Sat, 14 Oct 2023 10:37:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233045AbjJNKhK (ORCPT ); Sat, 14 Oct 2023 06:37:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60762 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232977AbjJNKhJ (ORCPT ); Sat, 14 Oct 2023 06:37:09 -0400 Received: from mail.mutluit.com (mail.mutluit.com [195.201.130.20]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 474F3B3 for ; Sat, 14 Oct 2023 03:37:07 -0700 (PDT) Received: from [127.0.0.1] (mail.mutluit.com [195.201.130.20]:39540) by mail.mutluit.com (mail.mutluit.com [195.201.130.20]:50025) with ESMTP ([XMail 1.27 ESMTP Server]) id for from ; Sat, 14 Oct 2023 12:37:06 +0200 Subject: Re: [libipset] How to read packet counter of a single item? To: netfilter@vger.kernel.org Cc: Jozsef Kadlecsik References: <65289DC7.9090603@mutluit.com> <64f2f344-e83a-cbbe-b8e8-a81dfacbca98@netfilter.org> From: "U.Mutlu" Organization: mutluit.com Message-ID: <652A6F4C.2040200@mutluit.com> Date: Sat, 14 Oct 2023 12:37:00 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:40.0) Gecko/20100101 Firefox/40.0 SeaMonkey/2.37a1 MIME-Version: 1.0 In-Reply-To: <64f2f344-e83a-cbbe-b8e8-a81dfacbca98@netfilter.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: netfilter@vger.kernel.org Jozsef Kadlecsik wrote on 10/13/23 21:05: > On Fri, 13 Oct 2023, U.Mutlu wrote: > >> 1) Which libipset function can be used for getting >> the packet counter value of a single entry in the set/list? >> >> Using the function ipset_parse_line(ips, line) I can issue most of the >> ipset functions, but I need also a method for getting the packet counter >> for just a single item only, ie. not the output of all items as "ipset >> save" does. I need to do this in C/C++ (hence libipset in Linux), ie. >> not in script. > > There is no such functionality in ipset. You can test the existence of an > element in a set or list/save all of them with all of the attached > attributes. I guess you mean just the ipset command line tool, whereas I explicitly stated libipset. After researching it further I think it should be possible to read the counter of a single item via libipset & co., or at least testing the item for having a counter value "gt" etc, as is already possible in the iptables extensions, ie. "-m set --packets-gt value" etc. >> 2) man ipset says >> "test SETNAME TEST-ENTRY [ TEST-OPTIONS ] >> Test whether an entry is in a set or not. Exit status number is zero if the >> tested entry is in the set and nonzero if it is missing from the set." >> >> But the TEST-OPTIONS are not further described or documented. >> What test options are possible? > > There's a single one in the case of list:set: to test the element before > or after a reference one. Can you give a practical example for this?