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=-6.6 required=3.0 tests=BAYES_00,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 D7AE5C55ABD for ; Mon, 9 Nov 2020 20:48:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9764E206E3 for ; Mon, 9 Nov 2020 20:48:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="G4/5zN6L" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730621AbgKIUs3 (ORCPT ); Mon, 9 Nov 2020 15:48:29 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37322 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729996AbgKIUs2 (ORCPT ); Mon, 9 Nov 2020 15:48:28 -0500 Received: from mail-ot1-x343.google.com (mail-ot1-x343.google.com [IPv6:2607:f8b0:4864:20::343]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D3D49C0613CF; Mon, 9 Nov 2020 12:48:27 -0800 (PST) Received: by mail-ot1-x343.google.com with SMTP id l36so10341856ota.4; Mon, 09 Nov 2020 12:48:27 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:message-id:in-reply-to:references:subject :mime-version:content-transfer-encoding; bh=J669Eof3CEJD8PSQp6rHHKzPIgW64KnkQofFLzioASo=; b=G4/5zN6LEiieOdnp0FVzEq0jjCC3Bt6nRxeEu912FIZuGEK0Awj3Egi3xKEPEnd7WU f/i78jXk6QS+KBwDE1Cs74Mv6EOzQSOqb7VS3PyokbP4iYt05Ujj0XL85+ykO7nMWtO/ 8zWIzdXpp5gArk5uBbrSl2iyIEVVqpym/itcrkhMWSTHcqnYVKZ1NT/Xo9SNOp6DvxA7 r2KiZqtCtUKokHQ8ymV/geJPebQvIPVFEiy2jeQiT9FDuQHUiKosGmqlH6bX4EkHKVO5 IxFo3S6I2AP0xuvTPC02/AptGSaurYFiFS5TYug0QLOGjfvXip+SP17UXPRjcV/kYBcl /PTg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:message-id:in-reply-to :references:subject:mime-version:content-transfer-encoding; bh=J669Eof3CEJD8PSQp6rHHKzPIgW64KnkQofFLzioASo=; b=lg6sphOD2hPVSL8XNielLMPMdRc2RW+idRdx5zoLa+CDQHHhch+/bkXORBKn+oHrOh FskoavRh6BzZobpNwNcww19PL4tKFQDE3FszTjEqP8s1CU20ZLcyvmuQ5Jaf1igFpG5i 9FhplrO4eLBAVwYlEO08i6s6BJe+rNt4TwIlliaPoElggyMkVHcgcrFJNSjJbUSgMfHb W0pFpY6ogD3BhGQs3anOANVPbnuKHqBtHhLBdl7FbsYLfDi6GRq63QoGkkP3avji12fK ucSWkgfaEMz37F2MQbDx2qpPWKbZAKOx0x/mP2NmIZo6WqdaB6g/yhrul8z3UNsKYOlF ZWIg== X-Gm-Message-State: AOAM532rgxjgdERqq6+2zwXJYlVF3bJ65wfIqnRGqhFyBe2cbDdbiPl+ pwgttumlLHmpkX3jxjn/PYo= X-Google-Smtp-Source: ABdhPJxz2Zu5RJ+3AlrUBvVxulSDjiP0gbPD3Btzbr1XnO6hbyOOQcdxTwOS9yEq0Ha4Kw9LBcdXBA== X-Received: by 2002:a9d:7505:: with SMTP id r5mr11254812otk.64.1604954907193; Mon, 09 Nov 2020 12:48:27 -0800 (PST) Received: from localhost ([184.63.162.180]) by smtp.gmail.com with ESMTPSA id 61sm2862941otc.9.2020.11.09.12.48.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Nov 2020 12:48:26 -0800 (PST) Date: Mon, 09 Nov 2020 12:48:19 -0800 From: John Fastabend To: Magnus Karlsson , magnus.karlsson@intel.com, bjorn.topel@intel.com, ast@kernel.org, daniel@iogearbox.net, netdev@vger.kernel.org, jonathan.lemon@gmail.com Cc: maciejromanfijalkowski@gmail.com, intel-wired-lan@lists.osuosl.org, bpf@vger.kernel.org Message-ID: <5fa9ab136176d_8c0e208cd@john-XPS-13-9370.notmuch> In-Reply-To: <1604498942-24274-4-git-send-email-magnus.karlsson@gmail.com> References: <1604498942-24274-1-git-send-email-magnus.karlsson@gmail.com> <1604498942-24274-4-git-send-email-magnus.karlsson@gmail.com> Subject: RE: [Intel-wired-lan] [PATCH bpf-next 3/6] i40e: remove unnecessary sw_ring access from xsk Tx Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Magnus Karlsson wrote: > From: Magnus Karlsson > > Remove the unnecessary access to the software ring for the AF_XDP > zero-copy driver. This was used to record the length of the packet so > that the driver Tx completion code could sum this up to produce the > total bytes sent. This is now performed during the transmission of the > packet, so no need to record this in the software ring. > > Signed-off-by: Magnus Karlsson > --- Acked-by: John Fastabend