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authorHerbert Xu <herbert@gondor.apana.org.au>2008-08-09 00:35:05 -0700
committerDavid S. Miller <davem@davemloft.net>2008-08-09 00:35:05 -0700
commitd97106ea52aa57e63ff40d04479016836bbb5a4e (patch)
tree5969603d7af02a5672f61c84c2017a6e064472f5 /net/ipv6/udp.c
parent8123b421e8ed944671d7241323ed3198cccb4041 (diff)
downloadlinux-2.6.38-lt-ux500-d97106ea52aa57e63ff40d04479016836bbb5a4e.tar.gz
udp: Drop socket lock for encapsulated packets
The socket lock is there to protect the normal UDP receive path. Encapsulation UDP sockets don't need that protection. In fact the locking is deadly for them as they may contain another UDP packet within, possibly with the same addresses. Also the nested bit was copied from TCP. TCP needs it because of accept(2) spawning sockets. This simply doesn't apply to UDP so I've removed it. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/udp.c')
-rw-r--r--net/ipv6/udp.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index d1477b350f7..a6aecf76a71 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -379,7 +379,7 @@ static int __udp6_lib_mcast_deliver(struct net *net, struct sk_buff *skb,
uh->source, saddr, dif))) {
struct sk_buff *buff = skb_clone(skb, GFP_ATOMIC);
if (buff) {
- bh_lock_sock_nested(sk2);
+ bh_lock_sock(sk2);
if (!sock_owned_by_user(sk2))
udpv6_queue_rcv_skb(sk2, buff);
else
@@ -387,7 +387,7 @@ static int __udp6_lib_mcast_deliver(struct net *net, struct sk_buff *skb,
bh_unlock_sock(sk2);
}
}
- bh_lock_sock_nested(sk);
+ bh_lock_sock(sk);
if (!sock_owned_by_user(sk))
udpv6_queue_rcv_skb(sk, skb);
else
@@ -508,7 +508,7 @@ int __udp6_lib_rcv(struct sk_buff *skb, struct hlist_head udptable[],
/* deliver */
- bh_lock_sock_nested(sk);
+ bh_lock_sock(sk);
if (!sock_owned_by_user(sk))
udpv6_queue_rcv_skb(sk, skb);
else