[RFC V2 PATCH 07/25] net/netpolicy: enable and disable NET policy
From: <hidden>
Date: 2016-08-04 19:18:03
Also in:
lkml
Subsystem:
networking [general], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Kan Liang <redacted> 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 <redacted> --- 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" };
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2.5.5