From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965902AbcHDTSD (ORCPT ); Thu, 4 Aug 2016 15:18:03 -0400 Received: from mga02.intel.com ([134.134.136.20]:58799 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965411AbcHDTNC (ORCPT ); Thu, 4 Aug 2016 15:13:02 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.28,471,1464678000"; d="scan'208";a="859869504" From: kan.liang@intel.com To: davem@davemloft.net, linux-kernel@vger.kernel.org, netdev@vger.kernel.org Cc: jeffrey.t.kirsher@intel.com, mingo@redhat.com, peterz@infradead.org, kuznet@ms2.inr.ac.ru, jmorris@namei.org, yoshfuji@linux-ipv6.org, kaber@trash.net, akpm@linux-foundation.org, keescook@chromium.org, viro@zeniv.linux.org.uk, gorcunov@openvz.org, john.stultz@linaro.org, aduyck@mirantis.com, ben@decadent.org.uk, decot@googlers.com, fw@strlen.de, alexander.duyck@gmail.com, daniel@iogearbox.net, tom@herbertland.com, rdunlap@infradead.org, xiyou.wangcong@gmail.com, hannes@stressinduktion.org, jesse.brandeburg@intel.com, andi@firstfloor.org, Kan Liang Subject: [RFC V2 PATCH 07/25] net/netpolicy: enable and disable NET policy Date: Wed, 31 Dec 2014 20:38:56 -0500 Message-Id: <1420076354-4861-8-git-send-email-kan.liang@intel.com> X-Mailer: git-send-email 2.5.5 In-Reply-To: <1420076354-4861-1-git-send-email-kan.liang@intel.com> References: <1420076354-4861-1-git-send-email-kan.liang@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Kan Liang This patch introduces functions to enable and disable NET policy. For enabling, it collects device and CPU information, setup CPU/queue mapping, and set IRQ affinity accordingly. For disabling, it removes the IRQ affinity and mapping information. np_lock should protect the enable and disable state. It will be done later in this series. Signed-off-by: Kan Liang --- net/core/netpolicy.c | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/net/core/netpolicy.c b/net/core/netpolicy.c index c44818d..7d4a49d 100644 --- a/net/core/netpolicy.c +++ b/net/core/netpolicy.c @@ -161,6 +161,45 @@ static void netpolicy_set_affinity(struct net_device *dev) } } +static int netpolicy_disable(struct net_device *dev) +{ + netpolicy_clear_affinity(dev); + netpolicy_free_sys_map(dev); + + return 0; +} + +static int netpolicy_enable(struct net_device *dev) +{ + int ret; + struct netpolicy_dev_info d_info; + u32 cpu; + + if (WARN_ON(!dev->netpolicy)) + return -EINVAL; + + /* get driver information */ + ret = netpolicy_get_dev_info(dev, &d_info); + if (ret) + return ret; + + /* get cpu information */ + cpu = netpolicy_get_cpu_information(); + + /* create sys map */ + ret = netpolicy_update_sys_map(dev, &d_info, cpu); + if (ret) { + netpolicy_free_dev_info(&d_info); + return ret; + } + + /* set irq affinity */ + netpolicy_set_affinity(dev); + + netpolicy_free_dev_info(&d_info); + return 0; +} + const char *policy_name[NET_POLICY_MAX] = { "NONE" }; -- 2.5.5