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 X-Spam-Level: X-Spam-Status: No, score=-0.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 17E23C31E57 for ; Mon, 17 Jun 2019 09:42:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DCB2F2064B for ; Mon, 17 Jun 2019 09:42:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="AK2Jwpw8" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725995AbfFQJmd (ORCPT ); Mon, 17 Jun 2019 05:42:33 -0400 Received: from mail-ed1-f52.google.com ([209.85.208.52]:44970 "EHLO mail-ed1-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725837AbfFQJmd (ORCPT ); Mon, 17 Jun 2019 05:42:33 -0400 Received: by mail-ed1-f52.google.com with SMTP id k8so15190679edr.11 for ; Mon, 17 Jun 2019 02:42:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=2GSfw2ATPbOF8HwJxA9NOavYnkUKl01/jpAVz1bAOTs=; b=AK2Jwpw89QS4o3sg4/U8B1dOWIdVZGuMPbRWQkNpu8JQbQ07UhBh72E4QB8NGVmXtU ciIzJTafkfIob0kTSRX1TSWqwWGQiMBsEw+Nu4uB+jnJgvB3sY/xbSpj3nKghcje+lZI 89MPPNUeKcM5RIps9nAXCejvfCw1+o1UbS6d0mdw9mmycmxbOWWCMWxZ2t/6VyoMJZv5 evB4v84vXva9I5D2g6cJJ/RXFGAfjb2E7wl4e4BbRXbdn7V/fQ3dlIowbWWNMytlmGfm uv1S7208Q4LL6B+o9cFq7n4nEBDFNj5StelN6lzVq71lcSjEJxD9zslfRNkrd4g8rDPk 08jg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=2GSfw2ATPbOF8HwJxA9NOavYnkUKl01/jpAVz1bAOTs=; b=ebd+v5VB2jzb1syW9es3zkst5C7NpDEbW/BiTzcHld2aLLXff2KOGQu0N+WuyNFqQc fmYj3UQ7OR+2obz54VSRdG/jDkE1oJJDKIc8LPBjaLMSxm1E6AFjRwP+GXFXGNygMAMU 2qaA8GcONNLDUXohFoyOIkifJyyfowngfaMpwHBy/HKYVJPcG82eneDEeFHc8tqCaxaU kOngp0/gdd7mAECz+GTeFU1VOJt94Ay+kl8Z/KC0HFnlm0W/ThGDRNLR5TFfZXdwm0eG iOHvq+pBJ0Qf9wajNBI0Avy0ijOJnCro+iigUqmIWqeyy9L3aDuIPNHtxqxZe0dFA+qk QSsQ== X-Gm-Message-State: APjAAAUOpgDkRjVMND3fmZYQ17lslwe//Pv7jzUJ6vgI6Qs7icGU4rQ1 58zN/yKv4LEm4+bDoVcl6lG9UbZauiEAowiGw/Nnm5yFcWc= X-Google-Smtp-Source: APXvYqw/3OxDlpsLn/bnZHNBBZrzjVvI0SJC+OKGidz9dLoVPWbddoJvVNjr67TOHAYM66wcztoOJWVapkPX+siAWeY= X-Received: by 2002:a17:906:4482:: with SMTP id y2mr34975084ejo.201.1560764551357; Mon, 17 Jun 2019 02:42:31 -0700 (PDT) MIME-Version: 1.0 From: Mojtaba Date: Mon, 17 Jun 2019 14:12:19 +0430 Message-ID: Subject: working with libnetfilter_queue and linbetfilter_contrack To: netfilter-devel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Sender: netfilter-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netfilter-devel@vger.kernel.org Hello Everyone, I am working for a while on two projects (libnetfilter_queue and linbetfilter_contrack) to get the decision of destined of packets that arrived in our project. It greats to get the control of all packets. But I confused a little. In my solution i just want to forward all packets that are in the same conditions (for example: all packets are received from specific IP:PORT address) to another destination. I could add simply add new rule in llinbetfilter_contrack list (like the samples that are exist in linbetfilter_contrack/utility project). But actually i want to use NFQUEUE to get all packets in my user-space and then add new rule in linbetfilter_contrack list. In other words, the verdict in my sulotions is not ACCEPT or DROP the packet, it should add new rule in linbetfilter_contrack list if it is not exist. Is it possible? I am thinking about this, But I am not sure it is correct or not? For example: static int cb(struct nfq_q_handle *qh, struct nfgenmsg *nfmsg, struct nfq_data *nfa, void *data) { uint32_t id = print_pkt(nfa); printf("entering callback\n"); if (not exist in list){ ct = nfct_new(); if (ct == NULL) { perror("nfct_new"); return 0; } Add_to_list(); } return; } -- --Mojtaba Esfandiari.S