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authorEric Dumazet <eric.dumazet@gmail.com>2010-09-15 04:04:31 +0000
committerDavid S. Miller <davem@davemloft.net>2010-09-15 22:06:05 -0700
commit95ae6b228f814fc0528d0506ee9f18ac333d6851 (patch)
treed5287f3dee478e1bd5fa79e63192447c5bc91e92 /drivers/net/wan
parent9e0064a5456fd75fd7c70f6f3692c7f732f91a65 (diff)
downloadlinux-95ae6b228f814fc0528d0506ee9f18ac333d6851.tar.bz2
ipv4: ip_ptr cleanups
dev->ip_ptr is protected by rtnl and rcu. Yet some places dont use appropriate primitives and/or locking rules. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/wan')
-rw-r--r--drivers/net/wan/hdlc_cisco.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/wan/hdlc_cisco.c b/drivers/net/wan/hdlc_cisco.c
index b38ffa149aba..b1e5e5b69c2a 100644
--- a/drivers/net/wan/hdlc_cisco.c
+++ b/drivers/net/wan/hdlc_cisco.c
@@ -191,7 +191,8 @@ static int cisco_rx(struct sk_buff *skb)
switch (ntohl (cisco_data->type)) {
case CISCO_ADDR_REQ: /* Stolen from syncppp.c :-) */
- in_dev = dev->ip_ptr;
+ rcu_read_lock();
+ in_dev = __in_dev_get_rcu(dev);
addr = 0;
mask = ~cpu_to_be32(0); /* is the mask correct? */
@@ -211,6 +212,7 @@ static int cisco_rx(struct sk_buff *skb)
cisco_keepalive_send(dev, CISCO_ADDR_REPLY,
addr, mask);
}
+ rcu_read_unlock();
dev_kfree_skb_any(skb);
return NET_RX_SUCCESS;