From patchwork Mon Sep 14 17:24:52 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wei Wang X-Patchwork-Id: 1363841 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=google.com header.i=@google.com header.a=rsa-sha256 header.s=20161025 header.b=u6zTyYRq; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4BqtmF2BHKz9sSP for ; Tue, 15 Sep 2020 03:35:09 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726342AbgINRfG (ORCPT ); Mon, 14 Sep 2020 13:35:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37202 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725957AbgINR03 (ORCPT ); Mon, 14 Sep 2020 13:26:29 -0400 Received: from mail-yb1-xb49.google.com (mail-yb1-xb49.google.com [IPv6:2607:f8b0:4864:20::b49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D28CBC06174A for ; Mon, 14 Sep 2020 10:26:28 -0700 (PDT) Received: by mail-yb1-xb49.google.com with SMTP id p187so451365ybg.14 for ; Mon, 14 Sep 2020 10:26:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=sender:date:in-reply-to:message-id:mime-version:references:subject :from:to:cc; bh=N7ud6SVmQsyeAo1FFabO4II1hmbm33EQsopeZ69GJts=; b=u6zTyYRqKGoaz6mBSCvkfnvI+0iG3USvJ/2orh5uqMIK9Ty23zTEg4Eepbmhfy+oN3 FIX918dyhMIQ524UpViV99xoLz5XC4LAEd8Pp6G7tHYfvfUT3wwSq+QXs82NCCSsijY+ xzptmcUEoU/vYjWdEVLadLcfbHNKDuKGy8A/oV0oqx1jqhXNpQOp4pfYLbk6NX6eJ4pl GpVPeyNbZD5iV3SWzvmGW1SGehwbLZ4YzI1T3rd4yW43lYmRPAgvWvSJ9/r/XjNrMonL XhkDelr4x+dLtgDew1ddbiGP2/+kPBDHoKg/uwW/6tN39AGzZbyC/+MTs1ZiAXeLw9jn LtnA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=N7ud6SVmQsyeAo1FFabO4II1hmbm33EQsopeZ69GJts=; b=TVpN1H7yfgmpSvQonMPimnVwARYZD95Voi56COk3Rp5ftqiOnMpA4ahgEGpeAyNOr3 bQfa3Vm2KUbNRrlSBgscADwQugw8N027EGiSuYHlFoKCX1UYKodX+fXFZaJuiCmrnFJ2 DqoWu7yBUbHOoKHrnyW7jJWu4YnpeqA2qWKoOPDzkRLxlplg8IGFeF5C+G8539gL00Nu UHVW6s+t+pUN0lPVc4/Vdd5XSIuPEOKz7rr2IK08yLLUXsUsqldUXEW4S30iSpxxWIJv 0OoQ1BEpg+0WJAu6F6V57SrVOqArqeOpkNuVBn+A5Y8LXklzypHsl7njgfWcpcinUuOv l/Hg== X-Gm-Message-State: AOAM5332tbdp5HnxzbaG9fe/gAE5rqIUwlaf3RPi/rmElHb0rBWUj+VW FTh6Lt+zLEF4Bh8h6B4RwhrCh580zig= X-Google-Smtp-Source: ABdhPJyV8DDlE5ivVzjfIvgNKZ18IxkPOYGk0n9VAYweLKxZKilu6XpGHOJ9AdlIsYjx1HOSSJOt34Egi+U= X-Received: from weiwan.svl.corp.google.com ([2620:15c:2c4:201:1ea0:b8ff:fe75:cf08]) (user=weiwan job=sendgmr) by 2002:a25:ae9e:: with SMTP id b30mr7629296ybj.281.1600104388111; Mon, 14 Sep 2020 10:26:28 -0700 (PDT) Date: Mon, 14 Sep 2020 10:24:52 -0700 In-Reply-To: <20200914172453.1833883-1-weiwan@google.com> Message-Id: <20200914172453.1833883-6-weiwan@google.com> Mime-Version: 1.0 References: <20200914172453.1833883-1-weiwan@google.com> X-Mailer: git-send-email 2.28.0.618.gf4bc123cb7-goog Subject: [RFC PATCH net-next 5/6] net: process RPS/RFS work in kthread context From: Wei Wang To: "David S . Miller" , netdev@vger.kernel.org Cc: Jakub Kicinski , Eric Dumazet , Paolo Abeni , Hannes Frederic Sowa , Felix Fietkau , Wei Wang Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Paolo Abeni This patch adds the missing part to handle RFS/RPS in the napi thread handler and makes sure RPS/RFS works properly when using kthread to do napi poll. Signed-off-by: Paolo Abeni Signed-off-by: Wei Wang --- net/core/dev.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/net/core/dev.c b/net/core/dev.c index be676c21bdc4..ab8af727058b 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -6820,6 +6820,7 @@ static int napi_thread_wait(struct napi_struct *napi) static int napi_threaded_poll(void *data) { struct napi_struct *napi = data; + struct softnet_data *sd; void *have; while (!napi_thread_wait(napi)) { @@ -6835,6 +6836,12 @@ static int napi_threaded_poll(void *data) __kfree_skb_flush(); local_bh_enable(); + sd = this_cpu_ptr(&softnet_data); + if (sd_has_rps_ipi_waiting(sd)) { + local_irq_disable(); + net_rps_action_and_irq_enable(sd); + } + if (!repoll) break;