1 files changed, 31 insertions, 21 deletions

diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index 73a2a83ee2da..402442402af7 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -137,9 +137,21 @@ static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev,
         return rc;
 }
 
+static inline netdev_tx_t vlan_netpoll_send_skb(struct vlan_dev_priv *vlan, struct sk_buff *skb)
+{
+#ifdef CONFIG_NET_POLL_CONTROLLER
+        if (vlan->netpoll)
+                netpoll_send_skb(vlan->netpoll, skb);
+#else
+        BUG();
+#endif
+        return NETDEV_TX_OK;
+}
+
 static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb,
                                             struct net_device *dev)
 {
+        struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
         struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data);
         unsigned int len;
         int ret;
@@ -150,29 +162,30 @@ static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb,
          * OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs...
          */
         if (veth->h_vlan_proto != htons(ETH_P_8021Q) ||
-            vlan_dev_priv(dev)->flags & VLAN_FLAG_REORDER_HDR) {
+            vlan->flags & VLAN_FLAG_REORDER_HDR) {
                 u16 vlan_tci;
-                vlan_tci = vlan_dev_priv(dev)->vlan_id;
+                vlan_tci = vlan->vlan_id;
                 vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb);
                 skb = __vlan_hwaccel_put_tag(skb, vlan_tci);
         }
 
-        skb->dev = vlan_dev_priv(dev)->real_dev;
+        skb->dev = vlan->real_dev;
         len = skb->len;
-        if (netpoll_tx_running(dev))
-                return skb->dev->netdev_ops->ndo_start_xmit(skb, skb->dev);
+        if (unlikely(netpoll_tx_running(dev)))
+                return vlan_netpoll_send_skb(vlan, skb);
+
         ret = dev_queue_xmit(skb);
 
         if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) {
                 struct vlan_pcpu_stats *stats;
 
-                stats = this_cpu_ptr(vlan_dev_priv(dev)->vlan_pcpu_stats);
+                stats = this_cpu_ptr(vlan->vlan_pcpu_stats);
                 u64_stats_update_begin(&stats->syncp);
                 stats->tx_packets++;
                 stats->tx_bytes += len;
                 u64_stats_update_end(&stats->syncp);
         } else {
-                this_cpu_inc(vlan_dev_priv(dev)->vlan_pcpu_stats->tx_dropped);
+                this_cpu_inc(vlan->vlan_pcpu_stats->tx_dropped);
         }
 
         return ret;
@@ -669,25 +682,26 @@ static void vlan_dev_poll_controller(struct net_device *dev)
         return;
 }
 
-static int vlan_dev_netpoll_setup(struct net_device *dev, struct netpoll_info *npinfo)
+static int vlan_dev_netpoll_setup(struct net_device *dev, struct netpoll_info *npinfo,
+                                  gfp_t gfp)
 {
-        struct vlan_dev_priv *info = vlan_dev_priv(dev);
-        struct net_device *real_dev = info->real_dev;
+        struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+        struct net_device *real_dev = vlan->real_dev;
         struct netpoll *netpoll;
         int err = 0;
 
-        netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL);
+        netpoll = kzalloc(sizeof(*netpoll), gfp);
         err = -ENOMEM;
         if (!netpoll)
                 goto out;
 
-        err = __netpoll_setup(netpoll, real_dev);
+        err = __netpoll_setup(netpoll, real_dev, gfp);
         if (err) {
                 kfree(netpoll);
                 goto out;
         }
 
-        info->netpoll = netpoll;
+        vlan->netpoll = netpoll;
 
 out:
         return err;
@@ -695,19 +709,15 @@ out:
 
 static void vlan_dev_netpoll_cleanup(struct net_device *dev)
 {
-        struct vlan_dev_priv *info = vlan_dev_priv(dev);
-        struct netpoll *netpoll = info->netpoll;
+        struct vlan_dev_priv *vlan= vlan_dev_priv(dev);
+        struct netpoll *netpoll = vlan->netpoll;
 
         if (!netpoll)
                 return;
 
-        info->netpoll = NULL;
-
-        /* Wait for transmitting packets to finish before freeing. */
-        synchronize_rcu_bh();
+        vlan->netpoll = NULL;
 
-        __netpoll_cleanup(netpoll);
-        kfree(netpoll);
+        __netpoll_free_rcu(netpoll);
 }
 #endif /* CONFIG_NET_POLL_CONTROLLER */