From patchwork Fri Jan 26 02:26:21 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cong Wang X-Patchwork-Id: 866121 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@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=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="kwaj+kuU"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3zSN7t5YKXz9sRm for ; Fri, 26 Jan 2018 13:26:34 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751557AbeAZC0c (ORCPT ); Thu, 25 Jan 2018 21:26:32 -0500 Received: from mail-pg0-f65.google.com ([74.125.83.65]:32926 "EHLO mail-pg0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751465AbeAZC0b (ORCPT ); Thu, 25 Jan 2018 21:26:31 -0500 Received: by mail-pg0-f65.google.com with SMTP id u1so6330433pgr.0 for ; Thu, 25 Jan 2018 18:26:31 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=Fn0S/psFELsRyC+3q/eVVjAHFJ3JSE5LBm6Fq4eSVWU=; b=kwaj+kuUlWy6yBJw6J7WNEkiAJ6sqUKpsCZTwQsWLc4EdZuEpB4zdmrh+EdImPJDiR f3F9FyUf0OHMKO+sXQusyZjzhnV5fwTjBEPbSiFf1zf+VvHaIpi7nPIskMvTgnpUMHbc oTQ1QHSTmCFuAehPVB2iP5thPgDnpUYdKJqEROzO/1qKSl9ZYrRg0hKkjlnWBeNP7ZUz gEPp45QsRm8QHEG5Mv6IrrUK5com7ZqBeh7+6YRKa77XvXZrQOQL87/VPbKdngDN4F3/ Y2xFB058e/hUL2xiteS1dLpZwGirmycZmf8y1ay3O0Csp8+snLRG421OjStNOU1xVgLd wkew== 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; bh=Fn0S/psFELsRyC+3q/eVVjAHFJ3JSE5LBm6Fq4eSVWU=; b=pshTLg6FdnR93+RJibpDUpDFBC9l/Bl4MP9yQ1egEdW3HUWSgCv9IDVmqruMKpaGZH t6CJuRzczEXNHseEs0XXbYcRg6X5laS+mDgnHukyraP9HadbXyULOPVwFwkcX6EiGJXU 8EaU4WZIoMTwAl/ek+1OjXhHlOGZx9iKn12S+UBXSqujK1u8XvUTxiZGgz6Vb55wcwJf /QrweghToGYdAy3DOpODC1MgV9DSb3K/krwgTPKfn6DjcwpZaLcs8RuWLADiwqoZAFVU 1fIF7pyAZw3nq4vk4cUEwDmFeWYAKgskPOd6wSREeDGVG+Z9+O/4F2PWQoS3muqQB2YY TZ9A== X-Gm-Message-State: AKwxytdy7C9GhB7VP3TAkROxfSZxbrCp2hBlrv6YrJY3sC+SgOAusnJD Af2j6fAev2UqfW7rR5TLebQUNPID X-Google-Smtp-Source: AH8x226XBWPOAefKgdjdk83y/+U9sNHqnOl/+kg2a6JaRcHJQQnVJCyplCKbdpsQKrBMVdITrjUqXQ== X-Received: by 2002:a17:902:4003:: with SMTP id b3-v6mr11714689pld.154.1516933590655; Thu, 25 Jan 2018 18:26:30 -0800 (PST) Received: from tw-172-25-30-113.office.twttr.net ([8.25.197.25]) by smtp.gmail.com with ESMTPSA id u86sm16430234pfa.102.2018.01.25.18.26.29 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 25 Jan 2018 18:26:29 -0800 (PST) From: Cong Wang To: netdev@vger.kernel.org Cc: john.fastabend@gmail.com, Cong Wang Subject: [Patch net-next v3 0/3] net_sched: reflect tx_queue_len change for pfifo_fast Date: Thu, 25 Jan 2018 18:26:21 -0800 Message-Id: <20180126022624.20442-1-xiyou.wangcong@gmail.com> X-Mailer: git-send-email 2.9.4 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This pathcset restores the pfifo_fast qdisc behavior of dropping packets based on latest dev->tx_queue_len. Patch 1 introduces a helper, patch 2 introduces a new Qdisc ops which is called when we modify tx_queue_len, patch 3 implements this ops for pfifo_fast. Please see each patch for details. --- v3: use skb_array_resize_multiple() v2: handle error case for ->change_tx_queue_len() Cong Wang (3): net: introduce helper dev_change_tx_queue_len() net_sched: plug in qdisc ops change_tx_queue_len net_sched: implement ->change_tx_queue_len() for pfifo_fast include/linux/netdevice.h | 1 + include/net/sch_generic.h | 2 ++ net/core/dev.c | 29 +++++++++++++++++++++++++++ net/core/net-sysfs.c | 25 +---------------------- net/core/rtnetlink.c | 18 +++++------------ net/sched/sch_generic.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++ 6 files changed, 89 insertions(+), 37 deletions(-)