netpoll: take rcu_read_lock_bh() in netpoll_send_skb_on_dev()
authorAmerigo Wang <amwang@redhat.com>
Fri, 10 Aug 2012 01:24:42 +0000 (01:24 +0000)
committerDavid S. Miller <davem@davemloft.net>
Tue, 14 Aug 2012 21:33:31 +0000 (14:33 -0700)
commit2899656b494dcd118123af1126826b115c8ea6f9
tree969d2b4362c2237cb38259f909774dc0a00a7e4d
parent91fe4a4b9e490a24f6702dd8afe72d8afab6fcdb
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>
include/linux/netpoll.h
net/core/netpoll.c