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>
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index d65e9215..bdb6c71 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -925,6 +925,7 @@
/*
* RFC1812 (4.3.3.9). A router SHOULD listen all replies, and complain
* loudly if an inconsistency is found.
+ * called with rcu_read_lock()
*/
static void icmp_address_reply(struct sk_buff *skb)
@@ -935,12 +936,12 @@
struct in_ifaddr *ifa;
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)
- goto out;
- rcu_read_lock();
+ return;
+
if (in_dev->ifa_list &&
IN_DEV_LOG_MARTIANS(in_dev) &&
IN_DEV_FORWARD(in_dev)) {
@@ -958,9 +959,6 @@
mp, dev->name, &rt->rt_src);
}
}
- rcu_read_unlock();
- in_dev_put(in_dev);
-out:;
}
static void icmp_discard(struct sk_buff *skb)
