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=-3.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED 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 3F127C433FF for ; Wed, 14 Aug 2019 15:41:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 16FDE2084D for ; Wed, 14 Aug 2019 15:41:35 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="MF5oaFy7" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728265AbfHNPld (ORCPT ); Wed, 14 Aug 2019 11:41:33 -0400 Received: from mail-pl1-f194.google.com ([209.85.214.194]:42507 "EHLO mail-pl1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728188AbfHNPlc (ORCPT ); Wed, 14 Aug 2019 11:41:32 -0400 Received: by mail-pl1-f194.google.com with SMTP id y1so487856plp.9; Wed, 14 Aug 2019 08:41:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version; bh=A4Rxd200j00xiq48qsdaEzJnhe23VeGpskQxHrue20o=; b=MF5oaFy7zhu1XET6aWH8DvZKm/S+BXbMmVzQmOHd9PDB9+ZQ9mdkoC4BQFEp+XY5zG /DbUUN4i8h3F5osQdAwKDzn7yywa/tXIvMp053XWIs1vKbHavMvwp8rHhZAPoVcH+ql4 7UORlZJq7JaWaxeGIKxBuWVm2sR9gN6a9JfcEp9pPKJmyPEKsdhA+xr4VYWv1mNJu05x we7uTWZte+hGWiBubPRTGPjGY2uh178iXJLwL1a2qVOS6cEzUnIQR0KY+tT597WEu64o ZXTJgAyd65hlMLhwJXmn7+mGQfsbQit6zc6H4eZDkII3p/bCVqw2e0XTWmEXhxT7XEyC 206g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version; bh=A4Rxd200j00xiq48qsdaEzJnhe23VeGpskQxHrue20o=; b=MPCW2/tP6qTDaoPE9kjn5zdt1uTMBPA0lkzkdYGePzbFGSMrVqeEqLYYSYI5ALynpX q56tzs+AnVJpK89ZErbpKVBnkQeQUErXfPp5AiE2LrCbIBVVijJH2dluTXxVcUFUUPKJ pr1jcReiNM34dJ/47R701cOpZDEv+r8544E9FJd4uMBWn6zMDEypUI1S1BSnNg/gfTqI Mnl9MPG4uHMVmhuC2/lxq41YIAOQiRjSlJrDnJldxN5SCVDY+I3Us2xD7VXJlYdOlhdI H8++EZ1o9fKdANz6/F5FGXZd9ykW8OScRQ3gbj68GfqkxIaJLfxMumpISSwwQRgWWZn6 xfMA== X-Gm-Message-State: APjAAAWbWAMRETukTruFW4Hd711RFxp0bzsIb4EtPOed17IfQeJFwkng qxTuNxGrdrkY9sAmT1XlCJk= X-Google-Smtp-Source: APXvYqxLUw57lXhjtooJWVoWXHXuORVhgljCxNXzthbyWBmRv+HF3ckdxnvC2f6Vf0cL83CQye8JFg== X-Received: by 2002:a17:902:8345:: with SMTP id z5mr65579pln.29.1565797291885; Wed, 14 Aug 2019 08:41:31 -0700 (PDT) Received: from [172.26.122.72] ([2620:10d:c090:180::6327]) by smtp.gmail.com with ESMTPSA id s72sm65545pgc.92.2019.08.14.08.41.30 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 14 Aug 2019 08:41:31 -0700 (PDT) From: "Jonathan Lemon" To: "Magnus Karlsson" Cc: bjorn.topel@intel.com, ast@kernel.org, daniel@iogearbox.net, netdev@vger.kernel.org, brouer@redhat.com, maximmi@mellanox.com, bpf@vger.kernel.org, bruce.richardson@intel.com, ciara.loftus@intel.com, jakub.kicinski@netronome.com, xiaolong.ye@intel.com, qi.z.zhang@intel.com, sridhar.samudrala@intel.com, kevin.laatz@intel.com, ilias.apalodimas@linaro.org, kiran.patil@intel.com, axboe@kernel.dk, maciej.fijalkowski@intel.com, maciejromanfijalkowski@gmail.com, intel-wired-lan@lists.osuosl.org Subject: Re: [PATCH bpf-next v4 3/8] i40e: add support for AF_XDP need_wakeup feature Date: Wed, 14 Aug 2019 08:41:29 -0700 X-Mailer: MailMate (1.12.5r5635) Message-ID: In-Reply-To: <1565767643-4908-4-git-send-email-magnus.karlsson@intel.com> References: <1565767643-4908-1-git-send-email-magnus.karlsson@intel.com> <1565767643-4908-4-git-send-email-magnus.karlsson@intel.com> MIME-Version: 1.0 Content-Type: text/plain Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org On 14 Aug 2019, at 0:27, Magnus Karlsson wrote: > This patch adds support for the need_wakeup feature of AF_XDP. If the > application has told the kernel that it might sleep using the new bind > flag XDP_USE_NEED_WAKEUP, the driver will then set this flag if it has > no more buffers on the NIC Rx ring and yield to the application. For > Tx, it will set the flag if it has no outstanding Tx completion > interrupts and return to the application. > > Signed-off-by: Magnus Karlsson Acked-by: Jonathan Lemon