net: do not process device backlog during unregistration

[linux-2.6-block.git] / net / core / dev.c

diff --git a/net/core/dev.c b/net/core/dev.c
index 1e57efda055b58546876c2474f19719bb9e191cc..6dd126a69aa00944019150088e4f44ffefa2ec60 100644 (file)
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -3448,6 +3448,8 @@ static int enqueue_to_backlog(struct sk_buff *skb, int cpu,
        local_irq_save(flags);
 
        rps_lock(sd);
+       if (!netif_running(skb->dev))
+               goto drop;
        qlen = skb_queue_len(&sd->input_pkt_queue);
        if (qlen <= netdev_max_backlog && !skb_flow_limit(skb, qlen)) {
                if (qlen) {
@@ -3469,6 +3471,7 @@ enqueue:
                goto enqueue;
        }
 
+drop:
        sd->dropped++;
        rps_unlock(sd);
 
@@ -6135,6 +6138,7 @@ static void rollback_registered_many(struct list_head *head)
                unlist_netdevice(dev);
 
                dev->reg_state = NETREG_UNREGISTERING;
+               on_each_cpu(flush_backlog, dev, 1);
        }
 
        synchronize_net();
@@ -6770,8 +6774,6 @@ void netdev_run_todo(void)
 
                dev->reg_state = NETREG_UNREGISTERED;
 
-               on_each_cpu(flush_backlog, dev, 1);
-
                netdev_wait_allrefs(dev);
 
                /* paranoia */