From owner-freebsd-net@FreeBSD.ORG Mon Mar 30 23:33:52 2015 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 9A39B88B; Mon, 30 Mar 2015 23:33:52 +0000 (UTC) Received: from mail-ig0-x229.google.com (mail-ig0-x229.google.com [IPv6:2607:f8b0:4001:c05::229]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 5C423AE1; Mon, 30 Mar 2015 23:33:52 +0000 (UTC) Received: by igcau2 with SMTP id au2so3835997igc.0; Mon, 30 Mar 2015 16:33:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=eEuIpDGuIawiWi+RzH9zd+zIoz+Qra5UWiv+2+d/xow=; b=VdmrZxe0xcyJF3r/vDWZgzyzX9hSjvVXgzqy4IjetHAD76lzmDk30cf0sVdZ3o9E9J CwoysW5t6GPPkreV1nEkcsnlYstFZLjAeedKfRBdYpfQ5kg2lFxvifS29C78D5dQuh5w legFKVP7nn1ex5Bd/KnQJFYe8u7TtJ5nmhhzb1LNFS+sAXqGSfEQ5pxYfqm34Y6TXw2n goOh6z5zDho3zSfal9JirdVuq23Qu/UNvS7i/LYOsV2UTKRy4AfxJAES69wcy9CcEk4X l/c2/iYi7whv3ZllTvbOYRpoK0hyYYCEn9olTlLXdFDGlVGYT1tym4A6OJPxvrgE1xzO vrbw== MIME-Version: 1.0 X-Received: by 10.43.82.137 with SMTP id ac9mr7551168icc.37.1427758431870; Mon, 30 Mar 2015 16:33:51 -0700 (PDT) Sender: adrian.chadd@gmail.com Received: by 10.36.17.194 with HTTP; Mon, 30 Mar 2015 16:33:51 -0700 (PDT) In-Reply-To: <20150330225945.GI10892@strugglingcoder.info> References: <20150323233908.GT53237@strugglingcoder.info> <20150323234214.GU53237@strugglingcoder.info> <20150324154931.GC53237@strugglingcoder.info> <20150330225945.GI10892@strugglingcoder.info> Date: Mon, 30 Mar 2015 16:33:51 -0700 X-Google-Sender-Auth: M1vXaXw5D3Pa4MZunfwvmqFncLc Message-ID: Subject: Re: Full 32bit flowid from igb(4) From: Adrian Chadd To: hiren panchasara Content-Type: text/plain; charset=UTF-8 Cc: Jack F Vogel , FreeBSD Net , erj@freebsd.org, Jack Vogel , Jason Wolfe X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 30 Mar 2015 23:33:52 -0000 So, the 32 bit field that has the flowid in the rx descriptor can mean multiple things - not just the flowid. For igb it can also mean one of the RX checksums. for ixgbe it can also mean RX checksum, or flowdirector flow information, or a few other thngs. -adrian