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Date: Sun, 17 Jul 2016 23:56:03 -0700 From: kan.liang@...el.com To: davem@...emloft.net, linux-kernel@...r.kernel.org, intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org Cc: jeffrey.t.kirsher@...el.com, mingo@...hat.com, peterz@...radead.org, kuznet@....inr.ac.ru, jmorris@...ei.org, yoshfuji@...ux-ipv6.org, kaber@...sh.net, akpm@...ux-foundation.org, keescook@...omium.org, viro@...iv.linux.org.uk, gorcunov@...nvz.org, john.stultz@...aro.org, aduyck@...antis.com, ben@...adent.org.uk, decot@...glers.com, jesse.brandeburg@...el.com, andi@...stfloor.org, Kan Liang <kan.liang@...el.com> Subject: [RFC PATCH 09/30] net/netpolicy: enable and disable net policy From: Kan Liang <kan.liang@...el.com> 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 <kan.liang@...el.com> --- 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
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