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authorAmerigo Wang <amwang@redhat.com>2012-08-10 01:24:42 +0000
committerDavid S. Miller <davem@davemloft.net>2012-08-14 14:33:31 -0700
commit2899656b494dcd118123af1126826b115c8ea6f9 (patch)
tree969d2b4362c2237cb38259f909774dc0a00a7e4d /include
parent91fe4a4b9e490a24f6702dd8afe72d8afab6fcdb (diff)
downloadlinux-2899656b494dcd118123af1126826b115c8ea6f9.tar.bz2
netpoll: take rcu_read_lock_bh() in netpoll_send_skb_on_dev()
This patch fixes several problems in the call path of netpoll_send_skb_on_dev(): 1. Disable IRQ's before calling netpoll_send_skb_on_dev(). 2. All the callees of netpoll_send_skb_on_dev() should use rcu_dereference_bh() to dereference ->npinfo. 3. Rename arp_reply() to netpoll_arp_reply(), the former is too generic. Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Cong Wang <amwang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/linux/netpoll.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/netpoll.h b/include/linux/netpoll.h
index 2d178baa49df..61aee86cf21d 100644
--- a/include/linux/netpoll.h
+++ b/include/linux/netpoll.h
@@ -57,7 +57,10 @@ void netpoll_send_skb_on_dev(struct netpoll *np, struct sk_buff *skb,
struct net_device *dev);
static inline void netpoll_send_skb(struct netpoll *np, struct sk_buff *skb)
{
+ unsigned long flags;
+ local_irq_save(flags);
netpoll_send_skb_on_dev(np, skb, np->dev);
+ local_irq_restore(flags);
}