diff options
Diffstat (limited to 'net/ipv6/icmp.c')
-rw-r--r-- | net/ipv6/icmp.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c index abedf95fdf2d..b3157a0cc15d 100644 --- a/net/ipv6/icmp.c +++ b/net/ipv6/icmp.c | |||
@@ -91,19 +91,22 @@ static struct inet6_protocol icmpv6_protocol = { | |||
91 | .flags = INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL, | 91 | .flags = INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL, |
92 | }; | 92 | }; |
93 | 93 | ||
94 | static __inline__ int icmpv6_xmit_lock(struct sock *sk) | 94 | static __inline__ struct sock *icmpv6_xmit_lock(struct net *net) |
95 | { | 95 | { |
96 | struct sock *sk; | ||
97 | |||
96 | local_bh_disable(); | 98 | local_bh_disable(); |
97 | 99 | ||
100 | sk = icmpv6_sk(net); | ||
98 | if (unlikely(!spin_trylock(&sk->sk_lock.slock))) { | 101 | if (unlikely(!spin_trylock(&sk->sk_lock.slock))) { |
99 | /* This can happen if the output path (f.e. SIT or | 102 | /* This can happen if the output path (f.e. SIT or |
100 | * ip6ip6 tunnel) signals dst_link_failure() for an | 103 | * ip6ip6 tunnel) signals dst_link_failure() for an |
101 | * outgoing ICMP6 packet. | 104 | * outgoing ICMP6 packet. |
102 | */ | 105 | */ |
103 | local_bh_enable(); | 106 | local_bh_enable(); |
104 | return 1; | 107 | return NULL; |
105 | } | 108 | } |
106 | return 0; | 109 | return sk; |
107 | } | 110 | } |
108 | 111 | ||
109 | static __inline__ void icmpv6_xmit_unlock(struct sock *sk) | 112 | static __inline__ void icmpv6_xmit_unlock(struct sock *sk) |
@@ -392,11 +395,10 @@ void icmpv6_send(struct sk_buff *skb, int type, int code, __u32 info, | |||
392 | fl.fl_icmp_code = code; | 395 | fl.fl_icmp_code = code; |
393 | security_skb_classify_flow(skb, &fl); | 396 | security_skb_classify_flow(skb, &fl); |
394 | 397 | ||
395 | sk = icmpv6_sk(net); | 398 | sk = icmpv6_xmit_lock(net); |
396 | np = inet6_sk(sk); | 399 | if (sk == NULL) |
397 | |||
398 | if (icmpv6_xmit_lock(sk)) | ||
399 | return; | 400 | return; |
401 | np = inet6_sk(sk); | ||
400 | 402 | ||
401 | if (!icmpv6_xrlim_allow(sk, type, &fl)) | 403 | if (!icmpv6_xrlim_allow(sk, type, &fl)) |
402 | goto out; | 404 | goto out; |
@@ -539,11 +541,10 @@ static void icmpv6_echo_reply(struct sk_buff *skb) | |||
539 | fl.fl_icmp_type = ICMPV6_ECHO_REPLY; | 541 | fl.fl_icmp_type = ICMPV6_ECHO_REPLY; |
540 | security_skb_classify_flow(skb, &fl); | 542 | security_skb_classify_flow(skb, &fl); |
541 | 543 | ||
542 | sk = icmpv6_sk(net); | 544 | sk = icmpv6_xmit_lock(net); |
543 | np = inet6_sk(sk); | 545 | if (sk == NULL) |
544 | |||
545 | if (icmpv6_xmit_lock(sk)) | ||
546 | return; | 546 | return; |
547 | np = inet6_sk(sk); | ||
547 | 548 | ||
548 | if (!fl.oif && ipv6_addr_is_multicast(&fl.fl6_dst)) | 549 | if (!fl.oif && ipv6_addr_is_multicast(&fl.fl6_dst)) |
549 | fl.oif = np->mcast_oif; | 550 | fl.oif = np->mcast_oif; |