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=-2.3 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, USER_AGENT_SANE_1 autolearn=no 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 EC4F1C49ED7 for ; Sat, 21 Sep 2019 04:18:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AA6802086A for ; Sat, 21 Sep 2019 04:18:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="cpzhvmcU" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726180AbfIUESF (ORCPT ); Sat, 21 Sep 2019 00:18:05 -0400 Received: from mail-qk1-f179.google.com ([209.85.222.179]:39367 "EHLO mail-qk1-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726079AbfIUESF (ORCPT ); Sat, 21 Sep 2019 00:18:05 -0400 Received: by mail-qk1-f179.google.com with SMTP id 4so9470186qki.6 for ; Fri, 20 Sep 2019 21:18:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=to:cc:references:subject:from:message-id:date:user-agent :mime-version:in-reply-to:content-transfer-encoding:content-language; bh=iwBwnuaXwAhtP/hl4oR1R1Uto3l//5tGzgaAIagalOM=; b=cpzhvmcUYqZaPoupst8FRL+GoTu9L+GEWBWt1Lb8qiMdZq/2l3zFKX1ABbIzeB8veR DkA2n6PpdaHzX8yLlvon1+huvk6BYmBJPQR6zqb/c+PmigftS6A/qa18tE6FxP06KueR cNfhDDsS/Q90pyr2Pd7QaIuZjoQQ7iL2dRjLtk8iljId4Va0woOYBJxoaFWqLfUTSi59 vCGFJysW71VFg1mTMPzuYzxqU31px/puvEXzJt3zBnIhLkTyUu9aLfEGTzl45zT8Uc1a 8LyfKWVtFtdnR61e0kmBB3EUjRoHGWXZLfRvfNIlm171JprH3ciajPbAblcEC5sCs0Ei e3Jw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:to:cc:references:subject:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding :content-language; bh=iwBwnuaXwAhtP/hl4oR1R1Uto3l//5tGzgaAIagalOM=; b=ZQZ/ONPrTpehnZZlObX/LR+S8OVmc5oG+uGy9Wetu6Us73C55OKs2Nc07X/3WksrCi mUWyz+OaWbGLolUdYrlnQ7tuJ9nQGD21Cl38rY4BP4AdkUnpVLsqSeuCSvf1dTqQhRMd HDhz+Wq1ah9PjF4Od0kL+0ixGddUI2VyS9cPyZwmK4j5OCZx+TVHLqZeOkR+TMdKjsvV XL8AvGN83fAoQsDVerH6eJ7nFcktrBpkDKIPUv2m6RJWtlVUgWvusTRhmdz1CeY0WbgH oZgt0JLK3GLCVUNO1QbF1cXLvWkoDwBTxfFejm1HM14Tu07bXyFpsJBMfnrqDu8HeclT GTOA== X-Gm-Message-State: APjAAAWXef4TWzUMKZzzqb7Ji5Zukg/hGstIkHndAswFfj9rC29fXprP oe6hNoWXj8BG6Ya5hN59cWI= X-Google-Smtp-Source: APXvYqxekuygw8GpjWBF6eSztNYyZ9bpfh1PBNhZplwyo0AQxF5JpsthLKZ0+fm2XnGU4C6Fg2gqUg== X-Received: by 2002:a37:5887:: with SMTP id m129mr6858717qkb.27.1569039484016; Fri, 20 Sep 2019 21:18:04 -0700 (PDT) Received: from [10.182.232.14] (host-68-20.vari85can.richmond.va.us.clients.pavlovmedia.net. [68.180.68.20]) by smtp.gmail.com with ESMTPSA id u43sm2286896qte.19.2019.09.20.21.18.02 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 20 Sep 2019 21:18:03 -0700 (PDT) To: w@1wt.eu Cc: netdev@vger.kernel.org, thesw4rm@pm.me References: <20190921031529.GG1889@1wt.eu> Subject: Re: Verify ACK packets in handshake in kernel module (Access TCP state table) From: Yadunandan Pillai Message-ID: Date: Sat, 21 Sep 2019 00:18:01 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.1.0 MIME-Version: 1.0 In-Reply-To: <20190921031529.GG1889@1wt.eu> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Content-Language: en-US Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org You're right. I clearly need to be more aware of where I am looking. I think I got tripped up because I was trying to only look at header files like a noob. There is a tcp_ack function there with flags for this purpose. Appreciate it! Just one question, would it be acceptable to directly include the C file in a kernel module?