diff options
Diffstat (limited to 'net/ipv6/raw.c')
| -rw-r--r-- | net/ipv6/raw.c | 34 |
1 files changed, 31 insertions, 3 deletions
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c index a22c9c93d93..aac6aeb8de8 100644 --- a/net/ipv6/raw.c +++ b/net/ipv6/raw.c @@ -49,7 +49,7 @@ #include <net/udp.h> #include <net/inet_common.h> #include <net/tcp_states.h> -#ifdef CONFIG_IPV6_MIP6 +#if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE) #include <net/mip6.h> #endif @@ -137,6 +137,28 @@ static __inline__ int icmpv6_filter(struct sock *sk, struct sk_buff *skb) return 0; } +#if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE) +static int (*mh_filter)(struct sock *sock, struct sk_buff *skb); + +int rawv6_mh_filter_register(int (*filter)(struct sock *sock, + struct sk_buff *skb)) +{ + rcu_assign_pointer(mh_filter, filter); + return 0; +} +EXPORT_SYMBOL(rawv6_mh_filter_register); + +int rawv6_mh_filter_unregister(int (*filter)(struct sock *sock, + struct sk_buff *skb)) +{ + rcu_assign_pointer(mh_filter, NULL); + synchronize_rcu(); + return 0; +} +EXPORT_SYMBOL(rawv6_mh_filter_unregister); + +#endif + /* * demultiplex raw sockets. * (should consider queueing the skb in the sock receive_queue @@ -178,16 +200,22 @@ int ipv6_raw_deliver(struct sk_buff *skb, int nexthdr) case IPPROTO_ICMPV6: filtered = icmpv6_filter(sk, skb); break; -#ifdef CONFIG_IPV6_MIP6 + +#if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE) case IPPROTO_MH: + { /* XXX: To validate MH only once for each packet, * this is placed here. It should be after checking * xfrm policy, however it doesn't. The checking xfrm * policy is placed in rawv6_rcv() because it is * required for each socket. */ - filtered = mip6_mh_filter(sk, skb); + int (*filter)(struct sock *sock, struct sk_buff *skb); + + filter = rcu_dereference(mh_filter); + filtered = filter ? filter(sk, skb) : 0; break; + } #endif default: filtered = 0; |