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| author |   Eric Dumazet <eric.dumazet@gmail.com> | 2010-06-07 22:34:35 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2010-06-09 18:06:13 -0700 |
| commit | cfa087f689402438e3cb0f077e649d01c871b0e7 (patch) | |
| tree | 0284b1ef6a086fae77da311cc2f9efd6588a77dc /net/ipv4/icmp.c | |
| parent | phonet: use call_rcu for phonet device free (diff) | |
| download | linux-dev-cfa087f689402438e3cb0f077e649d01c871b0e7.tar.xz linux-dev-cfa087f689402438e3cb0f077e649d01c871b0e7.zip | |
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>
Diffstat (limited to 'net/ipv4/icmp.c')
| -rw-r--r-- | net/ipv4/icmp.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c index d65e9215bcd7..bdb6c71e72a6 100644 --- a/net/ipv4/icmp.c +++ b/net/ipv4/icmp.c @@ -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 * loudly if an inconsistency is found. + * called with rcu_read_lock() */ 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; 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 @@ static void icmp_address_reply(struct sk_buff *skb) mp, dev->name, &rt->rt_src); } } - rcu_read_unlock(); - in_dev_put(in_dev); -out:; } static void icmp_discard(struct sk_buff *skb) |