header cleaning: don't include smp_lock.h when not used
[linux-3.10.git] / net / ipv6 / af_inet6.c
index 2b193e3..6dd3772 100644 (file)
@@ -1,9 +1,9 @@
 /*
  *     PF_INET6 socket protocol family
- *     Linux INET6 implementation 
+ *     Linux INET6 implementation
  *
  *     Authors:
- *     Pedro Roque             <roque@di.fc.ul.pt>     
+ *     Pedro Roque             <roque@di.fc.ul.pt>
  *
  *     Adapted from linux/net/ipv4/af_inet.c
  *
 
 
 #include <linux/module.h>
-#include <linux/config.h>
+#include <linux/capability.h>
 #include <linux/errno.h>
 #include <linux/types.h>
 #include <linux/socket.h>
 #include <linux/in.h>
 #include <linux/kernel.h>
-#include <linux/sched.h>
 #include <linux/timer.h>
 #include <linux/string.h>
 #include <linux/sockios.h>
 #include <linux/inet.h>
 #include <linux/netdevice.h>
 #include <linux/icmpv6.h>
-#include <linux/smp_lock.h>
+#include <linux/netfilter_ipv6.h>
 
 #include <net/ip.h>
 #include <net/ipv6.h>
 #include <net/udp.h>
+#include <net/udplite.h>
 #include <net/tcp.h>
 #include <net/ipip.h>
 #include <net/protocol.h>
@@ -58,6 +58,9 @@
 #ifdef CONFIG_IPV6_TUNNEL
 #include <net/ip6_tunnel.h>
 #endif
+#ifdef CONFIG_IPV6_MIP6
+#include <net/mip6.h>
+#endif
 
 #include <asm/uaccess.h>
 #include <asm/system.h>
@@ -66,29 +69,7 @@ MODULE_AUTHOR("Cast of dozens");
 MODULE_DESCRIPTION("IPv6 protocol stack for Linux");
 MODULE_LICENSE("GPL");
 
-/* IPv6 procfs goodies... */
-
-#ifdef CONFIG_PROC_FS
-extern int raw6_proc_init(void);
-extern void raw6_proc_exit(void);
-extern int tcp6_proc_init(void);
-extern void tcp6_proc_exit(void);
-extern int udp6_proc_init(void);
-extern void udp6_proc_exit(void);
-extern int ipv6_misc_proc_init(void);
-extern void ipv6_misc_proc_exit(void);
-extern int ac6_proc_init(void);
-extern void ac6_proc_exit(void);
-extern int if6_proc_init(void);
-extern void if6_proc_exit(void);
-#endif
-
-int sysctl_ipv6_bindv6only;
-
-#ifdef INET_REFCNT_DEBUG
-atomic_t inet6_sock_nr;
-EXPORT_SYMBOL(inet6_sock_nr);
-#endif
+int sysctl_ipv6_bindv6only __read_mostly;
 
 /* The inetsw table contains everything that inet_create needs to
  * build a new socket.
@@ -96,15 +77,6 @@ EXPORT_SYMBOL(inet6_sock_nr);
 static struct list_head inetsw6[SOCK_MAX];
 static DEFINE_SPINLOCK(inetsw6_lock);
 
-static void inet6_sock_destruct(struct sock *sk)
-{
-       inet_sock_destruct(sk);
-
-#ifdef INET_REFCNT_DEBUG
-       atomic_dec(&inet6_sock_nr);
-#endif
-}
-
 static __inline__ struct ipv6_pinfo *inet6_sk_generic(struct sock *sk)
 {
        const int offset = sk->sk_prot->obj_size - sizeof(struct ipv6_pinfo);
@@ -122,10 +94,18 @@ static int inet6_create(struct socket *sock, int protocol)
        struct proto *answer_prot;
        unsigned char answer_flags;
        char answer_no_check;
-       int rc;
+       int try_loading_module = 0;
+       int err;
+
+       if (sock->type != SOCK_RAW &&
+           sock->type != SOCK_DGRAM &&
+           !inet_ehash_secret)
+               build_ehash_secret();
 
        /* Look for the requested type/protocol pair. */
        answer = NULL;
+lookup_protocol:
+       err = -ESOCKTNOSUPPORT;
        rcu_read_lock();
        list_for_each_rcu(p, &inetsw6[sock->type]) {
                answer = list_entry(p, struct inet_protosw, list);
@@ -143,21 +123,37 @@ static int inet6_create(struct socket *sock, int protocol)
                        if (IPPROTO_IP == answer->protocol)
                                break;
                }
+               err = -EPROTONOSUPPORT;
                answer = NULL;
        }
 
-       rc = -ESOCKTNOSUPPORT;
-       if (!answer)
-               goto out_rcu_unlock;
-       rc = -EPERM;
+       if (!answer) {
+               if (try_loading_module < 2) {
+                       rcu_read_unlock();
+                       /*
+                        * Be more specific, e.g. net-pf-10-proto-132-type-1
+                        * (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM)
+                        */
+                       if (++try_loading_module == 1)
+                               request_module("net-pf-%d-proto-%d-type-%d",
+                                               PF_INET6, protocol, sock->type);
+                       /*
+                        * Fall back to generic, e.g. net-pf-10-proto-132
+                        * (net-pf-PF_INET6-proto-IPPROTO_SCTP)
+                        */
+                       else
+                               request_module("net-pf-%d-proto-%d",
+                                               PF_INET6, protocol);
+                       goto lookup_protocol;
+               } else
+                       goto out_rcu_unlock;
+       }
+
+       err = -EPERM;
        if (answer->capability > 0 && !capable(answer->capability))
                goto out_rcu_unlock;
-       rc = -EPROTONOSUPPORT;
-       if (!protocol)
-               goto out_rcu_unlock;
 
        sock->ops = answer->ops;
-
        answer_prot = answer->prot;
        answer_no_check = answer->no_check;
        answer_flags = answer->flags;
@@ -165,19 +161,20 @@ static int inet6_create(struct socket *sock, int protocol)
 
        BUG_TRAP(answer_prot->slab != NULL);
 
-       rc = -ENOBUFS;
+       err = -ENOBUFS;
        sk = sk_alloc(PF_INET6, GFP_KERNEL, answer_prot, 1);
        if (sk == NULL)
                goto out;
 
        sock_init_data(sock, sk);
 
-       rc = 0;
+       err = 0;
        sk->sk_no_check = answer_no_check;
        if (INET_PROTOSW_REUSE & answer_flags)
                sk->sk_reuse = 1;
 
        inet = inet_sk(sk);
+       inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0;
 
        if (SOCK_RAW == sock->type) {
                inet->num = protocol;
@@ -185,7 +182,7 @@ static int inet6_create(struct socket *sock, int protocol)
                        inet->hdrincl = 1;
        }
 
-       sk->sk_destruct         = inet6_sock_destruct;
+       sk->sk_destruct         = inet_sock_destruct;
        sk->sk_family           = PF_INET6;
        sk->sk_protocol         = protocol;
 
@@ -197,7 +194,7 @@ static int inet6_create(struct socket *sock, int protocol)
        np->mc_loop     = 1;
        np->pmtudisc    = IPV6_PMTUDISC_WANT;
        np->ipv6only    = sysctl_ipv6_bindv6only;
-       
+
        /* Init the ipv4 part of the socket since we can have sockets
         * using v6 API for ipv4.
         */
@@ -212,29 +209,34 @@ static int inet6_create(struct socket *sock, int protocol)
                inet->pmtudisc = IP_PMTUDISC_DONT;
        else
                inet->pmtudisc = IP_PMTUDISC_WANT;
+       /*
+        * Increment only the relevant sk_prot->socks debug field, this changes
+        * the previous behaviour of incrementing both the equivalent to
+        * answer->prot->socks (inet6_sock_nr) and inet_sock_nr.
+        *
+        * This allows better debug granularity as we'll know exactly how many
+        * UDPv6, TCPv6, etc socks were allocated, not the sum of all IPv6
+        * transport protocol socks. -acme
+        */
+       sk_refcnt_debug_inc(sk);
 
-
-#ifdef INET_REFCNT_DEBUG
-       atomic_inc(&inet6_sock_nr);
-       atomic_inc(&inet_sock_nr);
-#endif
        if (inet->num) {
                /* It assumes that any protocol which allows
                 * the user to assign a number at socket
                 * creation time automatically shares.
                 */
-               inet->sport = ntohs(inet->num);
+               inet->sport = htons(inet->num);
                sk->sk_prot->hash(sk);
        }
        if (sk->sk_prot->init) {
-               rc = sk->sk_prot->init(sk);
-               if (rc) {
+               err = sk->sk_prot->init(sk);
+               if (err) {
                        sk_common_release(sk);
                        goto out;
                }
        }
 out:
-       return rc;
+       return err;
 out_rcu_unlock:
        rcu_read_unlock();
        goto out;
@@ -248,7 +250,7 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
        struct sock *sk = sock->sk;
        struct inet_sock *inet = inet_sk(sk);
        struct ipv6_pinfo *np = inet6_sk(sk);
-       __u32 v4addr = 0;
+       __be32 v4addr = 0;
        unsigned short snum;
        int addr_type = 0;
        int err = 0;
@@ -294,7 +296,7 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
                                         */
                                        sk->sk_bound_dev_if = addr->sin6_scope_id;
                                }
-                               
+
                                /* Binding to link-local address requires an interface */
                                if (!sk->sk_bound_dev_if) {
                                        err = -EINVAL;
@@ -328,7 +330,7 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
        inet->saddr = v4addr;
 
        ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr);
-               
+
        if (!(addr_type & IPV6_ADDR_MULTICAST))
                ipv6_addr_copy(&np->saddr, &addr->sin6_addr);
 
@@ -343,7 +345,7 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
                sk->sk_userlocks |= SOCK_BINDADDR_LOCK;
        if (snum)
                sk->sk_userlocks |= SOCK_BINDPORT_LOCK;
-       inet->sport = ntohs(inet->num);
+       inet->sport = htons(inet->num);
        inet->dport = 0;
        inet->daddr = 0;
 out:
@@ -351,6 +353,8 @@ out:
        return err;
 }
 
+EXPORT_SYMBOL(inet6_bind);
+
 int inet6_release(struct socket *sock)
 {
        struct sock *sk = sock->sk;
@@ -367,18 +371,14 @@ int inet6_release(struct socket *sock)
        return inet_release(sock);
 }
 
+EXPORT_SYMBOL(inet6_release);
+
 int inet6_destroy_sock(struct sock *sk)
 {
        struct ipv6_pinfo *np = inet6_sk(sk);
        struct sk_buff *skb;
        struct ipv6_txoptions *opt;
 
-       /*
-        *      Release destination entry
-        */
-
-       sk_dst_reset(sk);
-
        /* Release rx options */
 
        if ((skb = xchg(&np->pktoptions, NULL)) != NULL)
@@ -395,10 +395,12 @@ int inet6_destroy_sock(struct sock *sk)
        return 0;
 }
 
+EXPORT_SYMBOL_GPL(inet6_destroy_sock);
+
 /*
  *     This does both peername and sockname.
  */
+
 int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
                 int *uaddr_len, int peer)
 {
@@ -406,7 +408,7 @@ int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
        struct sock *sk = sock->sk;
        struct inet_sock *inet = inet_sk(sk);
        struct ipv6_pinfo *np = inet6_sk(sk);
-  
+
        sin->sin6_family = AF_INET6;
        sin->sin6_flowinfo = 0;
        sin->sin6_scope_id = 0;
@@ -434,19 +436,23 @@ int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
        return(0);
 }
 
+EXPORT_SYMBOL(inet6_getname);
+
 int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
 {
        struct sock *sk = sock->sk;
-       int err = -EINVAL;
 
-       switch(cmd) 
+       switch(cmd)
        {
        case SIOCGSTAMP:
                return sock_get_timestamp(sk, (struct timeval __user *)arg);
 
+       case SIOCGSTAMPNS:
+               return sock_get_timestampns(sk, (struct timespec __user *)arg);
+
        case SIOCADDRT:
        case SIOCDELRT:
-         
+
                return(ipv6_route_ioctl(cmd,(void __user *)arg));
 
        case SIOCSIFADDR:
@@ -456,55 +462,64 @@ int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
        case SIOCSIFDSTADDR:
                return addrconf_set_dstaddr((void __user *) arg);
        default:
-               if (!sk->sk_prot->ioctl ||
-                   (err = sk->sk_prot->ioctl(sk, cmd, arg)) == -ENOIOCTLCMD)
-                       return(dev_ioctl(cmd,(void __user *) arg));             
-               return err;
+               if (!sk->sk_prot->ioctl)
+                       return -ENOIOCTLCMD;
+               return sk->sk_prot->ioctl(sk, cmd, arg);
        }
        /*NOTREACHED*/
        return(0);
 }
 
-struct proto_ops inet6_stream_ops = {
-       .family =       PF_INET6,
-       .owner =        THIS_MODULE,
-       .release =      inet6_release,
-       .bind =         inet6_bind,
-       .connect =      inet_stream_connect,            /* ok           */
-       .socketpair =   sock_no_socketpair,             /* a do nothing */
-       .accept =       inet_accept,                    /* ok           */
-       .getname =      inet6_getname, 
-       .poll =         tcp_poll,                       /* ok           */
-       .ioctl =        inet6_ioctl,                    /* must change  */
-       .listen =       inet_listen,                    /* ok           */
-       .shutdown =     inet_shutdown,                  /* ok           */
-       .setsockopt =   sock_common_setsockopt,         /* ok           */
-       .getsockopt =   sock_common_getsockopt,         /* ok           */
-       .sendmsg =      inet_sendmsg,                   /* ok           */
-       .recvmsg =      sock_common_recvmsg,            /* ok           */
-       .mmap =         sock_no_mmap,
-       .sendpage =     tcp_sendpage
+EXPORT_SYMBOL(inet6_ioctl);
+
+const struct proto_ops inet6_stream_ops = {
+       .family            = PF_INET6,
+       .owner             = THIS_MODULE,
+       .release           = inet6_release,
+       .bind              = inet6_bind,
+       .connect           = inet_stream_connect,       /* ok           */
+       .socketpair        = sock_no_socketpair,        /* a do nothing */
+       .accept            = inet_accept,               /* ok           */
+       .getname           = inet6_getname,
+       .poll              = tcp_poll,                  /* ok           */
+       .ioctl             = inet6_ioctl,               /* must change  */
+       .listen            = inet_listen,               /* ok           */
+       .shutdown          = inet_shutdown,             /* ok           */
+       .setsockopt        = sock_common_setsockopt,    /* ok           */
+       .getsockopt        = sock_common_getsockopt,    /* ok           */
+       .sendmsg           = inet_sendmsg,              /* ok           */
+       .recvmsg           = sock_common_recvmsg,       /* ok           */
+       .mmap              = sock_no_mmap,
+       .sendpage          = tcp_sendpage,
+#ifdef CONFIG_COMPAT
+       .compat_setsockopt = compat_sock_common_setsockopt,
+       .compat_getsockopt = compat_sock_common_getsockopt,
+#endif
 };
 
-struct proto_ops inet6_dgram_ops = {
-       .family =       PF_INET6,
-       .owner =        THIS_MODULE,
-       .release =      inet6_release,
-       .bind =         inet6_bind,
-       .connect =      inet_dgram_connect,             /* ok           */
-       .socketpair =   sock_no_socketpair,             /* a do nothing */
-       .accept =       sock_no_accept,                 /* a do nothing */
-       .getname =      inet6_getname, 
-       .poll =         udp_poll,                       /* ok           */
-       .ioctl =        inet6_ioctl,                    /* must change  */
-       .listen =       sock_no_listen,                 /* ok           */
-       .shutdown =     inet_shutdown,                  /* ok           */
-       .setsockopt =   sock_common_setsockopt,         /* ok           */
-       .getsockopt =   sock_common_getsockopt,         /* ok           */
-       .sendmsg =      inet_sendmsg,                   /* ok           */
-       .recvmsg =      sock_common_recvmsg,            /* ok           */
-       .mmap =         sock_no_mmap,
-       .sendpage =     sock_no_sendpage,
+const struct proto_ops inet6_dgram_ops = {
+       .family            = PF_INET6,
+       .owner             = THIS_MODULE,
+       .release           = inet6_release,
+       .bind              = inet6_bind,
+       .connect           = inet_dgram_connect,        /* ok           */
+       .socketpair        = sock_no_socketpair,        /* a do nothing */
+       .accept            = sock_no_accept,            /* a do nothing */
+       .getname           = inet6_getname,
+       .poll              = udp_poll,                  /* ok           */
+       .ioctl             = inet6_ioctl,               /* must change  */
+       .listen            = sock_no_listen,            /* ok           */
+       .shutdown          = inet_shutdown,             /* ok           */
+       .setsockopt        = sock_common_setsockopt,    /* ok           */
+       .getsockopt        = sock_common_getsockopt,    /* ok           */
+       .sendmsg           = inet_sendmsg,              /* ok           */
+       .recvmsg           = sock_common_recvmsg,       /* ok           */
+       .mmap              = sock_no_mmap,
+       .sendpage          = sock_no_sendpage,
+#ifdef CONFIG_COMPAT
+       .compat_setsockopt = compat_sock_common_setsockopt,
+       .compat_getsockopt = compat_sock_common_getsockopt,
+#endif
 };
 
 static struct net_proto_family inet6_family_ops = {
@@ -513,31 +528,30 @@ static struct net_proto_family inet6_family_ops = {
        .owner  = THIS_MODULE,
 };
 
-#ifdef CONFIG_SYSCTL
-extern void ipv6_sysctl_register(void);
-extern void ipv6_sysctl_unregister(void);
-#endif
-
 /* Same as inet6_dgram_ops, sans udp_poll.  */
-static struct proto_ops inet6_sockraw_ops = {
-       .family =       PF_INET6,
-       .owner =        THIS_MODULE,
-       .release =      inet6_release,
-       .bind =         inet6_bind,
-       .connect =      inet_dgram_connect,             /* ok           */
-       .socketpair =   sock_no_socketpair,             /* a do nothing */
-       .accept =       sock_no_accept,                 /* a do nothing */
-       .getname =      inet6_getname, 
-       .poll =         datagram_poll,                  /* ok           */
-       .ioctl =        inet6_ioctl,                    /* must change  */
-       .listen =       sock_no_listen,                 /* ok           */
-       .shutdown =     inet_shutdown,                  /* ok           */
-       .setsockopt =   sock_common_setsockopt,         /* ok           */
-       .getsockopt =   sock_common_getsockopt,         /* ok           */
-       .sendmsg =      inet_sendmsg,                   /* ok           */
-       .recvmsg =      sock_common_recvmsg,            /* ok           */
-       .mmap =         sock_no_mmap,
-       .sendpage =     sock_no_sendpage,
+static const struct proto_ops inet6_sockraw_ops = {
+       .family            = PF_INET6,
+       .owner             = THIS_MODULE,
+       .release           = inet6_release,
+       .bind              = inet6_bind,
+       .connect           = inet_dgram_connect,        /* ok           */
+       .socketpair        = sock_no_socketpair,        /* a do nothing */
+       .accept            = sock_no_accept,            /* a do nothing */
+       .getname           = inet6_getname,
+       .poll              = datagram_poll,             /* ok           */
+       .ioctl             = inet6_ioctl,               /* must change  */
+       .listen            = sock_no_listen,            /* ok           */
+       .shutdown          = inet_shutdown,             /* ok           */
+       .setsockopt        = sock_common_setsockopt,    /* ok           */
+       .getsockopt        = sock_common_getsockopt,    /* ok           */
+       .sendmsg           = inet_sendmsg,              /* ok           */
+       .recvmsg           = sock_common_recvmsg,       /* ok           */
+       .mmap              = sock_no_mmap,
+       .sendpage          = sock_no_sendpage,
+#ifdef CONFIG_COMPAT
+       .compat_setsockopt = compat_sock_common_setsockopt,
+       .compat_getsockopt = compat_sock_common_getsockopt,
+#endif
 };
 
 static struct inet_protosw rawv6_protosw = {
@@ -584,7 +598,7 @@ inet6_register_protosw(struct inet_protosw *p)
        /* Add the new entry after the last permanent entry if any, so that
         * the new entry does not override a permanent entry when matched with
         * a wild-card protocol. But it is allowed to override any existing
-        * non-permanent entry.  This means that when we remove this entry, the 
+        * non-permanent entry.  This means that when we remove this entry, the
         * system automatically returns to the old behavior.
         */
        list_add_rcu(&p->list, last_perm);
@@ -604,6 +618,8 @@ out_illegal:
        goto out;
 }
 
+EXPORT_SYMBOL(inet6_register_protosw);
+
 void
 inet6_unregister_protosw(struct inet_protosw *p)
 {
@@ -620,78 +636,124 @@ inet6_unregister_protosw(struct inet_protosw *p)
        }
 }
 
-int
-snmp6_mib_init(void *ptr[2], size_t mibsize, size_t mibalign)
+EXPORT_SYMBOL(inet6_unregister_protosw);
+
+int inet6_sk_rebuild_header(struct sock *sk)
 {
-       if (ptr == NULL)
-               return -EINVAL;
+       int err;
+       struct dst_entry *dst;
+       struct ipv6_pinfo *np = inet6_sk(sk);
 
-       ptr[0] = __alloc_percpu(mibsize, mibalign);
-       if (!ptr[0])
-               goto err0;
+       dst = __sk_dst_check(sk, np->dst_cookie);
+
+       if (dst == NULL) {
+               struct inet_sock *inet = inet_sk(sk);
+               struct in6_addr *final_p = NULL, final;
+               struct flowi fl;
+
+               memset(&fl, 0, sizeof(fl));
+               fl.proto = sk->sk_protocol;
+               ipv6_addr_copy(&fl.fl6_dst, &np->daddr);
+               ipv6_addr_copy(&fl.fl6_src, &np->saddr);
+               fl.fl6_flowlabel = np->flow_label;
+               fl.oif = sk->sk_bound_dev_if;
+               fl.fl_ip_dport = inet->dport;
+               fl.fl_ip_sport = inet->sport;
+               security_sk_classify_flow(sk, &fl);
+
+               if (np->opt && np->opt->srcrt) {
+                       struct rt0_hdr *rt0 = (struct rt0_hdr *) np->opt->srcrt;
+                       ipv6_addr_copy(&final, &fl.fl6_dst);
+                       ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
+                       final_p = &final;
+               }
 
-       ptr[1] = __alloc_percpu(mibsize, mibalign);
-       if (!ptr[1])
-               goto err1;
+               err = ip6_dst_lookup(sk, &dst, &fl);
+               if (err) {
+                       sk->sk_route_caps = 0;
+                       return err;
+               }
+               if (final_p)
+                       ipv6_addr_copy(&fl.fl6_dst, final_p);
 
-       return 0;
+               if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) {
+                       sk->sk_err_soft = -err;
+                       return err;
+               }
 
-err1:
-       free_percpu(ptr[0]);
-       ptr[0] = NULL;
-err0:
-       return -ENOMEM;
+               __ip6_dst_store(sk, dst, NULL, NULL);
+       }
+
+       return 0;
 }
 
-void
-snmp6_mib_free(void *ptr[2])
+EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header);
+
+int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb)
 {
-       if (ptr == NULL)
-               return;
-       if (ptr[0])
-               free_percpu(ptr[0]);
-       if (ptr[1])
-               free_percpu(ptr[1]);
-       ptr[0] = ptr[1] = NULL;
+       struct ipv6_pinfo *np = inet6_sk(sk);
+       struct inet6_skb_parm *opt = IP6CB(skb);
+
+       if (np->rxopt.all) {
+               if ((opt->hop && (np->rxopt.bits.hopopts ||
+                                 np->rxopt.bits.ohopopts)) ||
+                   ((IPV6_FLOWINFO_MASK &
+                     *(__be32 *)skb_network_header(skb)) &&
+                    np->rxopt.bits.rxflow) ||
+                   (opt->srcrt && (np->rxopt.bits.srcrt ||
+                    np->rxopt.bits.osrcrt)) ||
+                   ((opt->dst1 || opt->dst0) &&
+                    (np->rxopt.bits.dstopts || np->rxopt.bits.odstopts)))
+                       return 1;
+       }
+       return 0;
 }
 
+EXPORT_SYMBOL_GPL(ipv6_opt_accepted);
+
 static int __init init_ipv6_mibs(void)
 {
-       if (snmp6_mib_init((void **)ipv6_statistics, sizeof (struct ipstats_mib),
-                          __alignof__(struct ipstats_mib)) < 0)
+       if (snmp_mib_init((void **)ipv6_statistics, sizeof (struct ipstats_mib),
+                         __alignof__(struct ipstats_mib)) < 0)
                goto err_ip_mib;
-       if (snmp6_mib_init((void **)icmpv6_statistics, sizeof (struct icmpv6_mib),
-                          __alignof__(struct icmpv6_mib)) < 0)
+       if (snmp_mib_init((void **)icmpv6_statistics, sizeof (struct icmpv6_mib),
+                         __alignof__(struct icmpv6_mib)) < 0)
                goto err_icmp_mib;
-       if (snmp6_mib_init((void **)udp_stats_in6, sizeof (struct udp_mib),
-                          __alignof__(struct udp_mib)) < 0)
+       if (snmp_mib_init((void **)udp_stats_in6, sizeof (struct udp_mib),
+                         __alignof__(struct udp_mib)) < 0)
                goto err_udp_mib;
+       if (snmp_mib_init((void **)udplite_stats_in6, sizeof (struct udp_mib),
+                         __alignof__(struct udp_mib)) < 0)
+               goto err_udplite_mib;
        return 0;
 
+err_udplite_mib:
+       snmp_mib_free((void **)udp_stats_in6);
 err_udp_mib:
-       snmp6_mib_free((void **)icmpv6_statistics);
+       snmp_mib_free((void **)icmpv6_statistics);
 err_icmp_mib:
-       snmp6_mib_free((void **)ipv6_statistics);
+       snmp_mib_free((void **)ipv6_statistics);
 err_ip_mib:
        return -ENOMEM;
-       
+
 }
 
 static void cleanup_ipv6_mibs(void)
 {
-       snmp6_mib_free((void **)ipv6_statistics);
-       snmp6_mib_free((void **)icmpv6_statistics);
-       snmp6_mib_free((void **)udp_stats_in6);
+       snmp_mib_free((void **)ipv6_statistics);
+       snmp_mib_free((void **)icmpv6_statistics);
+       snmp_mib_free((void **)udp_stats_in6);
+       snmp_mib_free((void **)udplite_stats_in6);
 }
 
-extern int ipv6_misc_proc_init(void);
-
 static int __init inet6_init(void)
 {
        struct sk_buff *dummy_skb;
-        struct list_head *r;
+       struct list_head *r;
        int err;
 
+       BUILD_BUG_ON(sizeof(struct inet6_skb_parm) > sizeof(dummy_skb->cb));
+
 #ifdef MODULE
 #if 0 /* FIXME --RR */
        if (!mod_member_present(&__this_module, can_unload))
@@ -701,11 +763,6 @@ static int __init inet6_init(void)
 #endif
 #endif
 
-       if (sizeof(struct inet6_skb_parm) > sizeof(dummy_skb->cb)) {
-               printk(KERN_CRIT "inet6_proto_init: size fault\n");
-               return -EINVAL;
-       }
-
        err = proto_register(&tcpv6_prot, 1);
        if (err)
                goto out;
@@ -714,10 +771,14 @@ static int __init inet6_init(void)
        if (err)
                goto out_unregister_tcp_proto;
 
-       err = proto_register(&rawv6_prot, 1);
+       err = proto_register(&udplitev6_prot, 1);
        if (err)
                goto out_unregister_udp_proto;
 
+       err = proto_register(&rawv6_prot, 1);
+       if (err)
+               goto out_unregister_udplite_proto;
+
 
        /* Register the socket-side information for inet6_create.  */
        for(r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r)
@@ -731,13 +792,15 @@ static int __init inet6_init(void)
        /* Register the family here so that the init calls below will
         * be able to create sockets. (?? is this dangerous ??)
         */
-       (void) sock_register(&inet6_family_ops);
+       err = sock_register(&inet6_family_ops);
+       if (err)
+               goto out_unregister_raw_proto;
 
        /* Initialise ipv6 mibs */
        err = init_ipv6_mibs();
        if (err)
-               goto out_unregister_raw_proto;
-       
+               goto out_unregister_sock;
+
        /*
         *      ipngwg API draft makes clear that the correct semantics
         *      for TCP and UDP is to consider one TCP and UDP instance
@@ -757,6 +820,9 @@ static int __init inet6_init(void)
        err = igmp6_init(&inet6_family_ops);
        if (err)
                goto igmp_fail;
+       err = ipv6_netfilter_init();
+       if (err)
+               goto netfilter_fail;
        /* Create /proc/foo6 entries. */
 #ifdef CONFIG_PROC_FS
        err = -ENOMEM;
@@ -766,6 +832,8 @@ static int __init inet6_init(void)
                goto proc_tcp6_fail;
        if (udp6_proc_init())
                goto proc_udp6_fail;
+       if (udplite6_proc_init())
+               goto proc_udplite6_fail;
        if (ipv6_misc_proc_init())
                goto proc_misc6_fail;
 
@@ -774,23 +842,27 @@ static int __init inet6_init(void)
        if (if6_proc_init())
                goto proc_if6_fail;
 #endif
-       ipv6_packet_init();
        ip6_route_init();
        ip6_flowlabel_init();
        err = addrconf_init();
        if (err)
                goto addrconf_fail;
-       sit_init();
 
        /* Init v6 extension headers. */
        ipv6_rthdr_init();
        ipv6_frag_init();
        ipv6_nodata_init();
        ipv6_destopt_init();
+#ifdef CONFIG_IPV6_MIP6
+       mip6_init();
+#endif
 
        /* Init v6 transport protocols. */
        udpv6_init();
+       udplitev6_init();
        tcpv6_init();
+
+       ipv6_packet_init();
        err = 0;
 out:
        return err;
@@ -798,7 +870,6 @@ out:
 addrconf_fail:
        ip6_flowlabel_cleanup();
        ip6_route_cleanup();
-       ipv6_packet_cleanup();
 #ifdef CONFIG_PROC_FS
        if6_proc_exit();
 proc_if6_fail:
@@ -806,6 +877,8 @@ proc_if6_fail:
 proc_anycast6_fail:
        ipv6_misc_proc_exit();
 proc_misc6_fail:
+       udplite6_proc_exit();
+proc_udplite6_fail:
        udp6_proc_exit();
 proc_udp6_fail:
        tcp6_proc_exit();
@@ -813,6 +886,8 @@ proc_tcp6_fail:
        raw6_proc_exit();
 proc_raw6_fail:
 #endif
+       ipv6_netfilter_fini();
+netfilter_fail:
        igmp6_cleanup();
 igmp_fail:
        ndisc_cleanup();
@@ -823,8 +898,12 @@ icmp_fail:
        ipv6_sysctl_unregister();
 #endif
        cleanup_ipv6_mibs();
+out_unregister_sock:
+       sock_unregister(PF_INET6);
 out_unregister_raw_proto:
        proto_unregister(&rawv6_prot);
+out_unregister_udplite_proto:
+       proto_unregister(&udplitev6_prot);
 out_unregister_udp_proto:
        proto_unregister(&udpv6_prot);
 out_unregister_tcp_proto:
@@ -837,28 +916,38 @@ static void __exit inet6_exit(void)
 {
        /* First of all disallow new sockets creation. */
        sock_unregister(PF_INET6);
+       /* Disallow any further netlink messages */
+       rtnl_unregister_all(PF_INET6);
+
+       /* Cleanup code parts. */
+       ipv6_packet_cleanup();
+#ifdef CONFIG_IPV6_MIP6
+       mip6_fini();
+#endif
+       addrconf_cleanup();
+       ip6_flowlabel_cleanup();
+       ip6_route_cleanup();
 #ifdef CONFIG_PROC_FS
+
+       /* Cleanup code parts. */
        if6_proc_exit();
        ac6_proc_exit();
-       ipv6_misc_proc_exit();
-       udp6_proc_exit();
-       tcp6_proc_exit();
-       raw6_proc_exit();
+       ipv6_misc_proc_exit();
+       udplite6_proc_exit();
+       udp6_proc_exit();
+       tcp6_proc_exit();
+       raw6_proc_exit();
 #endif
-       /* Cleanup code parts. */
-       sit_cleanup();
-       ip6_flowlabel_cleanup();
-       addrconf_cleanup();
-       ip6_route_cleanup();
-       ipv6_packet_cleanup();
+       ipv6_netfilter_fini();
        igmp6_cleanup();
        ndisc_cleanup();
        icmpv6_cleanup();
 #ifdef CONFIG_SYSCTL
-       ipv6_sysctl_unregister();       
+       ipv6_sysctl_unregister();
 #endif
        cleanup_ipv6_mibs();
        proto_unregister(&rawv6_prot);
+       proto_unregister(&udplitev6_prot);
        proto_unregister(&udpv6_prot);
        proto_unregister(&tcpv6_prot);
 }