datapath: Use call_rcu() when deleting a datapath.

[sliver-openvswitch.git] / datapath / datapath.c

diff --git a/datapath/datapath.c b/datapath/datapath.c
index 01b3025..4117ba9 100644 (file)
--- a/datapath/datapath.c
+++ b/datapath/datapath.c
@@ -308,12 +308,24 @@ err:
        return err;
 }
 
+static void destroy_dp_rcu(struct rcu_head *rcu)
+{
+       struct datapath *dp = container_of(rcu, struct datapath, rcu);
+       int i;
+
+       for (i = 0; i < DP_N_QUEUES; i++)
+               skb_queue_purge(&dp->queues[i]);
+
+       tbl_destroy((struct tbl __force *)dp->table, flow_free_tbl);
+       free_percpu(dp->stats_percpu);
+       kobject_put(&dp->ifobj);
+}
+
 static int destroy_dp(int dp_idx)
 {
        struct datapath *dp;
        int err = 0;
        struct vport *p, *n;
-       int i;
 
        rtnl_lock();
        mutex_lock(&dp_mutex);
@@ -330,18 +342,11 @@ static int destroy_dp(int dp_idx)
                        dp_detach_port(p);
 
        dp_sysfs_del_dp(dp);
-
        rcu_assign_pointer(dps[dp->dp_idx], NULL);
-
        dp_detach_port(get_vport_protected(dp, ODPP_LOCAL));
-       tbl_destroy(get_table_protected(dp), flow_free_tbl);
-
-       for (i = 0; i < DP_N_QUEUES; i++)
-               skb_queue_purge(&dp->queues[i]);
-       free_percpu(dp->stats_percpu);
 
        mutex_unlock(&dp->mutex);
-       kobject_put(&dp->ifobj);
+       call_rcu(&dp->rcu, destroy_dp_rcu);
        module_put(THIS_MODULE);
 
 out: