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authorDavid S. Miller <davem@davemloft.net>2011-02-17 15:37:09 -0800
committerDavid S. Miller <davem@davemloft.net>2011-02-17 15:37:09 -0800
commit010c2708e536938a2f84d51d625f603b9a8f80ac (patch)
treebf886bc996e41d8996c24e60ec08a19e551c116e /net/ipv4/route.c
parent5ada552746685d558d0a8e9e979921c75a41e469 (diff)
downloadop-kernel-dev-010c2708e536938a2f84d51d625f603b9a8f80ac.zip
op-kernel-dev-010c2708e536938a2f84d51d625f603b9a8f80ac.tar.gz
ipv4: Move rcu_read_{lock,unlock}() into ip_route_output_slow().
Simplifies tail of __ip_route_output_key(). Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/route.c')
-rw-r--r--net/ipv4/route.c13
1 files changed, 6 insertions, 7 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 849be48..b2b3c9e 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -2456,6 +2456,7 @@ static int ip_route_output_slow(struct net *net, struct rtable **rp,
res.r = NULL;
#endif
+ rcu_read_lock();
if (oldflp->fl4_src) {
err = -EINVAL;
if (ipv4_is_multicast(oldflp->fl4_src) ||
@@ -2617,15 +2618,16 @@ make_route:
err = rt_intern_hash(hash, rth, rp, NULL, oldflp->oif);
}
-out: return err;
+out:
+ rcu_read_unlock();
+ return err;
}
int __ip_route_output_key(struct net *net, struct rtable **rp,
const struct flowi *flp)
{
- unsigned int hash;
- int res;
struct rtable *rth;
+ unsigned int hash;
if (!rt_caching(net))
goto slow_output;
@@ -2655,10 +2657,7 @@ int __ip_route_output_key(struct net *net, struct rtable **rp,
rcu_read_unlock_bh();
slow_output:
- rcu_read_lock();
- res = ip_route_output_slow(net, rp, flp);
- rcu_read_unlock();
- return res;
+ return ip_route_output_slow(net, rp, flp);
}
EXPORT_SYMBOL_GPL(__ip_route_output_key);
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