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Subject[RFC V2 PATCH 07/25] net/netpolicy: enable and disable NET policy
Date
From: Kan Liang <kan.liang@intel.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@intel.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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