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icmp: RCU conversion in icmp_address_reply() 

- rcu_read_lock() already held by caller
- use __in_dev_get_rcu() instead of in_dev_get() / in_dev_put()
- remove goto out;

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2010-06-07 22:34:35 +00:00 committed by David S. Miller
parent 88e7594a97
commit cfa087f689
1 changed files with 5 additions and 7 deletions
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12
net/ipv4/icmp.c
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@ -925,6 +925,7 @@ static void icmp_address(struct sk_buff *skb)
/* /*
* RFC1812 (4.3.3.9). A router SHOULD listen all replies, and complain * RFC1812 (4.3.3.9). A router SHOULD listen all replies, and complain
* loudly if an inconsistency is found. * loudly if an inconsistency is found.
* called with rcu_read_lock()
*/ */
static void icmp_address_reply(struct sk_buff *skb) static void icmp_address_reply(struct sk_buff *skb)
@ -935,12 +936,12 @@ static void icmp_address_reply(struct sk_buff *skb)
struct in_ifaddr *ifa; struct in_ifaddr *ifa;
if (skb->len < 4 || !(rt->rt_flags&RTCF_DIRECTSRC)) if (skb->len < 4 || !(rt->rt_flags&RTCF_DIRECTSRC))
goto out; return;
in_dev = in_dev_get(dev); in_dev = __in_dev_get_rcu(dev);
if (!in_dev) if (!in_dev)
goto out; return;
rcu_read_lock();
if (in_dev->ifa_list && if (in_dev->ifa_list &&
IN_DEV_LOG_MARTIANS(in_dev) && IN_DEV_LOG_MARTIANS(in_dev) &&
IN_DEV_FORWARD(in_dev)) { IN_DEV_FORWARD(in_dev)) {
@ -958,9 +959,6 @@ static void icmp_address_reply(struct sk_buff *skb)
mp, dev->name, &rt->rt_src); mp, dev->name, &rt->rt_src);
} }
} }
rcu_read_unlock();
in_dev_put(in_dev);
out:;
} }
static void icmp_discard(struct sk_buff *skb) static void icmp_discard(struct sk_buff *skb)