diff options
Diffstat (limited to 'net/ipv6/raw.c')
| -rw-r--r-- | net/ipv6/raw.c | 43 |
1 files changed, 33 insertions, 10 deletions
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c index a58459a76684..77167afa3455 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; @@ -611,9 +639,7 @@ static int rawv6_probe_proto_opt(struct flowi *fl, struct msghdr *msg) struct iovec *iov; u8 __user *type = NULL; u8 __user *code = NULL; -#ifdef CONFIG_IPV6_MIP6 u8 len = 0; -#endif int probed = 0; int i; @@ -646,7 +672,6 @@ static int rawv6_probe_proto_opt(struct flowi *fl, struct msghdr *msg) probed = 1; } break; -#ifdef CONFIG_IPV6_MIP6 case IPPROTO_MH: if (iov->iov_base && iov->iov_len < 1) break; @@ -660,7 +685,6 @@ static int rawv6_probe_proto_opt(struct flowi *fl, struct msghdr *msg) len += iov->iov_len; break; -#endif default: probed = 1; break; @@ -858,11 +882,10 @@ back_from_confirm: ip6_flush_pending_frames(sk); else if (!(msg->msg_flags & MSG_MORE)) err = rawv6_push_pending_frames(sk, &fl, rp); + release_sock(sk); } done: dst_release(dst); - if (!inet->hdrincl) - release_sock(sk); out: fl6_sock_release(flowlabel); return err<0?err:len; @@ -1256,7 +1279,7 @@ static int raw6_seq_show(struct seq_file *seq, void *v) return 0; } -static struct seq_operations raw6_seq_ops = { +static const struct seq_operations raw6_seq_ops = { .start = raw6_seq_start, .next = raw6_seq_next, .stop = raw6_seq_stop, |