| Message ID | 20190813120558.6151-14-toshiaki.makita1@gmail.com |
|---|---|
| State | RFC |
| Delegated to: | BPF Maintainers |
| Headers | show
Return-Path: <bpf-owner@vger.kernel.org> X-Original-To: incoming-bpf@patchwork.ozlabs.org Delivered-To: patchwork-incoming-bpf@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=bpf-owner@vger.kernel.org; receiver=<UNKNOWN>) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="hs127bin"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 467BLf4Mdfz9sN1 for <incoming-bpf@patchwork.ozlabs.org>; Tue, 13 Aug 2019 22:08:10 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728063AbfHMMIK (ORCPT <rfc822;incoming-bpf@patchwork.ozlabs.org>); Tue, 13 Aug 2019 08:08:10 -0400 Received: from mail-pf1-f193.google.com ([209.85.210.193]:39545 "EHLO mail-pf1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727466AbfHMMIJ (ORCPT <rfc822; bpf@vger.kernel.org>); Tue, 13 Aug 2019 08:08:09 -0400 Received: by mail-pf1-f193.google.com with SMTP id f17so47507320pfn.6; Tue, 13 Aug 2019 05:08:09 -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:content-transfer-encoding; bh=f/dTb4ClZaN81sXe2USd7VA6EXdy1jkzbTVP88gvsZU=; b=hs127bino+aRHv0nBLwWt+DG51I3QDsad9WxE1u2ABfBUc8amtsY19MCmUDSi0lMDn wEYGySn1SCZmeAD3FCs5lYA1MIpTozTTkL2+0j3hAWtuTotw2DVyfixMtmr8hHvpVmRA xLjG8jNRLiNUw5Jm48gnt8NRtBd/KX5LTZw9n4r9W9eIYEg+5zsP9/ShWNCDcsFXWHVK ujVKmE2Dlavd1szTRYywb7yj/c/1/6GDR/mvbdtSrWYIEoHkxXPhyAZcVUzLkLqSPVo9 jGkKRKXolKBTo/Wi2FdFdzl6GPwCLZf6KnOzswP/F0qRFdVA5fdjnzdLeQvA0QpagOTK FwhA== 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:content-transfer-encoding; bh=f/dTb4ClZaN81sXe2USd7VA6EXdy1jkzbTVP88gvsZU=; b=k6M0AKyLh4DuAElwerxTVGTTdZwGrxXSi9uqqCgCY3GFEDU4FkHXfyRKjm7LzJq162 NlVic626TwdX/AaGZQUp4uhARWv0As1yu3f7v5FECmocHvFoWaGjFU11EV2JX981aKtE DQDatJOOd81wyDrXIhGyPe40LrjKh6fypZT6/dilBZG4hk7C8uLqeIq0wsS5KeoT+uMx irJzc+tws4TmWcMtQIdM4BrJ4EvqBJSt6QA/4o8svsCnq/gTqqoE19VIJ3Wb9bvgHpct jrG/QsK+39mrEDcRO+bwNhg/T+mjM5xVrlZEB2voZPh/jcVPk9VP4hEzaamr/dBLbJhK gZRg== X-Gm-Message-State: APjAAAXDSfCCHhkro7xpz/+G9Zu3Xpf4If0oBqnvqWZdxNpQ1QxaW4e+ OEqkMgwlnDR8Cgd26ICAo3Y= X-Google-Smtp-Source: APXvYqzVtckARatEy2C/6IfJsCE1AauFGEeu/iH3Zoi4a8JcHfi/0kIKIMZY0Giz/EW5ki6DGfUbSQ== X-Received: by 2002:a17:90a:256f:: with SMTP id j102mr2012310pje.14.1565698089340; Tue, 13 Aug 2019 05:08:09 -0700 (PDT) Received: from z400-fedora29.kern.oss.ntt.co.jp ([222.151.198.97]) by smtp.gmail.com with ESMTPSA id o9sm73251099pgv.19.2019.08.13.05.08.05 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Tue, 13 Aug 2019 05:08:08 -0700 (PDT) From: Toshiaki Makita <toshiaki.makita1@gmail.com> To: Alexei Starovoitov <ast@kernel.org>, Daniel Borkmann <daniel@iogearbox.net>, Martin KaFai Lau <kafai@fb.com>, Song Liu <songliubraving@fb.com>, Yonghong Song <yhs@fb.com>, "David S. Miller" <davem@davemloft.net>, Jakub Kicinski <jakub.kicinski@netronome.com>, Jesper Dangaard Brouer <hawk@kernel.org>, John Fastabend <john.fastabend@gmail.com>, Jamal Hadi Salim <jhs@mojatatu.com>, Cong Wang <xiyou.wangcong@gmail.com>, Jiri Pirko <jiri@resnulli.us> Cc: Toshiaki Makita <toshiaki.makita1@gmail.com>, netdev@vger.kernel.org, bpf@vger.kernel.org, William Tu <u9012063@gmail.com> Subject: [RFC PATCH bpf-next 13/14] i40e: prefetch xdp->data before running XDP prog Date: Tue, 13 Aug 2019 21:05:57 +0900 Message-Id: <20190813120558.6151-14-toshiaki.makita1@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190813120558.6151-1-toshiaki.makita1@gmail.com> References: <20190813120558.6151-1-toshiaki.makita1@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: <bpf.vger.kernel.org> X-Mailing-List: bpf@vger.kernel.org |
| Series |
xdp_flow: Flow offload to XDP
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expand
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diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c index f162252..ea775ae 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c @@ -2207,6 +2207,7 @@ static struct sk_buff *i40e_run_xdp(struct i40e_ring *rx_ring, if (!xdp_prog) goto xdp_out; + prefetchw(xdp->data); prefetchw(xdp->data_hard_start); /* xdp_frame write */ act = bpf_prog_run_xdp(xdp_prog, xdp);
XDP progs are likely to read/write xdp->data. This improves the performance of xdp_flow. This is included in this series just to demonstrate to what extent xdp_flow performance can increase. Signed-off-by: Toshiaki Makita <toshiaki.makita1@gmail.com> --- drivers/net/ethernet/intel/i40e/i40e_txrx.c | 1 + 1 file changed, 1 insertion(+)