Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 867 insertions, 0 deletions

diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
new file mode 100644
index 000000000000..768b11703daf
--- /dev/null
+++ b/net/ipv6/af_inet6.c
@@ -0,0 +1,867 @@
+/*
+ *      PF_INET6 socket protocol family
+ *      Linux INET6 implementation 
+ *
+ *      Authors:
+ *      Pedro Roque             <roque@di.fc.ul.pt>     
+ *
+ *      Adapted from linux/net/ipv4/af_inet.c
+ *
+ *      $Id: af_inet6.c,v 1.66 2002/02/01 22:01:04 davem Exp $
+ *
+ *      Fixes:
+ *      piggy, Karl Knutson     :       Socket protocol table
+ *      Hideaki YOSHIFUJI       :       sin6_scope_id support
+ *      Arnaldo Melo            :       check proc_net_create return, cleanups
+ *
+ *      This program is free software; you can redistribute it and/or
+ *      modify it under the terms of the GNU General Public License
+ *      as published by the Free Software Foundation; either version
+ *      2 of the License, or (at your option) any later version.
+ */
+
+
+#include <linux/module.h>
+#include <linux/config.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/socket.h>
+#include <linux/in.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/string.h>
+#include <linux/sockios.h>
+#include <linux/net.h>
+#include <linux/fcntl.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/proc_fs.h>
+#include <linux/stat.h>
+#include <linux/init.h>
+
+#include <linux/inet.h>
+#include <linux/netdevice.h>
+#include <linux/icmpv6.h>
+#include <linux/smp_lock.h>
+
+#include <net/ip.h>
+#include <net/ipv6.h>
+#include <net/udp.h>
+#include <net/tcp.h>
+#include <net/ipip.h>
+#include <net/protocol.h>
+#include <net/inet_common.h>
+#include <net/transp_v6.h>
+#include <net/ip6_route.h>
+#include <net/addrconf.h>
+#ifdef CONFIG_IPV6_TUNNEL
+#include <net/ip6_tunnel.h>
+#endif
+
+#include <asm/uaccess.h>
+#include <asm/system.h>
+
+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;
+#endif
+
+/* The inetsw table contains everything that inet_create needs to
+ * build a new socket.
+ */
+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);
+
+        return (struct ipv6_pinfo *)(((u8 *)sk) + offset);
+}
+
+static int inet6_create(struct socket *sock, int protocol)
+{
+        struct inet_sock *inet;
+        struct ipv6_pinfo *np;
+        struct sock *sk;
+        struct list_head *p;
+        struct inet_protosw *answer;
+        struct proto *answer_prot;
+        unsigned char answer_flags;
+        char answer_no_check;
+        int rc;
+
+        /* Look for the requested type/protocol pair. */
+        answer = NULL;
+        rcu_read_lock();
+        list_for_each_rcu(p, &inetsw6[sock->type]) {
+                answer = list_entry(p, struct inet_protosw, list);
+
+                /* Check the non-wild match. */
+                if (protocol == answer->protocol) {
+                        if (protocol != IPPROTO_IP)
+                                break;
+                } else {
+                        /* Check for the two wild cases. */
+                        if (IPPROTO_IP == protocol) {
+                                protocol = answer->protocol;
+                                break;
+                        }
+                        if (IPPROTO_IP == answer->protocol)
+                                break;
+                }
+                answer = NULL;
+        }
+
+        rc = -ESOCKTNOSUPPORT;
+        if (!answer)
+                goto out_rcu_unlock;
+        rc = -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;
+        rcu_read_unlock();
+
+        BUG_TRAP(answer_prot->slab != NULL);
+
+        rc = -ENOBUFS;
+        sk = sk_alloc(PF_INET6, GFP_KERNEL, answer_prot, 1);
+        if (sk == NULL)
+                goto out;
+
+        sock_init_data(sock, sk);
+
+        rc = 0;
+        sk->sk_no_check = answer_no_check;
+        if (INET_PROTOSW_REUSE & answer_flags)
+                sk->sk_reuse = 1;
+
+        inet = inet_sk(sk);
+
+        if (SOCK_RAW == sock->type) {
+                inet->num = protocol;
+                if (IPPROTO_RAW == protocol)
+                        inet->hdrincl = 1;
+        }
+
+        sk->sk_destruct         = inet6_sock_destruct;
+        sk->sk_family           = PF_INET6;
+        sk->sk_protocol         = protocol;
+
+        sk->sk_backlog_rcv      = answer->prot->backlog_rcv;
+
+        inet_sk(sk)->pinet6 = np = inet6_sk_generic(sk);
+        np->hop_limit   = -1;
+        np->mcast_hops  = -1;
+        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.
+         */
+        inet->uc_ttl    = -1;
+
+        inet->mc_loop   = 1;
+        inet->mc_ttl    = 1;
+        inet->mc_index  = 0;
+        inet->mc_list   = NULL;
+
+        if (ipv4_config.no_pmtu_disc)
+                inet->pmtudisc = IP_PMTUDISC_DONT;
+        else
+                inet->pmtudisc = IP_PMTUDISC_WANT;
+
+
+#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);
+                sk->sk_prot->hash(sk);
+        }
+        if (sk->sk_prot->init) {
+                rc = sk->sk_prot->init(sk);
+                if (rc) {
+                        sk_common_release(sk);
+                        goto out;
+                }
+        }
+out:
+        return rc;
+out_rcu_unlock:
+        rcu_read_unlock();
+        goto out;
+}
+
+
+/* bind for INET6 API */
+int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
+{
+        struct sockaddr_in6 *addr=(struct sockaddr_in6 *)uaddr;
+        struct sock *sk = sock->sk;
+        struct inet_sock *inet = inet_sk(sk);
+        struct ipv6_pinfo *np = inet6_sk(sk);
+        __u32 v4addr = 0;
+        unsigned short snum;
+        int addr_type = 0;
+        int err = 0;
+
+        /* If the socket has its own bind function then use it. */
+        if (sk->sk_prot->bind)
+                return sk->sk_prot->bind(sk, uaddr, addr_len);
+
+        if (addr_len < SIN6_LEN_RFC2133)
+                return -EINVAL;
+        addr_type = ipv6_addr_type(&addr->sin6_addr);
+        if ((addr_type & IPV6_ADDR_MULTICAST) && sock->type == SOCK_STREAM)
+                return -EINVAL;
+
+        snum = ntohs(addr->sin6_port);
+        if (snum && snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE))
+                return -EACCES;
+
+        lock_sock(sk);
+
+        /* Check these errors (active socket, double bind). */
+        if (sk->sk_state != TCP_CLOSE || inet->num) {
+                err = -EINVAL;
+                goto out;
+        }
+
+        /* Check if the address belongs to the host. */
+        if (addr_type == IPV6_ADDR_MAPPED) {
+                v4addr = addr->sin6_addr.s6_addr32[3];
+                if (inet_addr_type(v4addr) != RTN_LOCAL) {
+                        err = -EADDRNOTAVAIL;
+                        goto out;
+                }
+        } else {
+                if (addr_type != IPV6_ADDR_ANY) {
+                        struct net_device *dev = NULL;
+
+                        if (addr_type & IPV6_ADDR_LINKLOCAL) {
+                                if (addr_len >= sizeof(struct sockaddr_in6) &&
+                                    addr->sin6_scope_id) {
+                                        /* Override any existing binding, if another one
+                                         * is supplied by user.
+                                         */
+                                        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;
+                                        goto out;
+                                }
+                                dev = dev_get_by_index(sk->sk_bound_dev_if);
+                                if (!dev) {
+                                        err = -ENODEV;
+                                        goto out;
+                                }
+                        }
+
+                        /* ipv4 addr of the socket is invalid.  Only the
+                         * unspecified and mapped address have a v4 equivalent.
+                         */
+                        v4addr = LOOPBACK4_IPV6;
+                        if (!(addr_type & IPV6_ADDR_MULTICAST)) {
+                                if (!ipv6_chk_addr(&addr->sin6_addr, dev, 0)) {
+                                        if (dev)
+                                                dev_put(dev);
+                                        err = -EADDRNOTAVAIL;
+                                        goto out;
+                                }
+                        }
+                        if (dev)
+                                dev_put(dev);
+                }
+        }
+
+        inet->rcv_saddr = v4addr;
+        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);
+
+        /* Make sure we are allowed to bind here. */
+        if (sk->sk_prot->get_port(sk, snum)) {
+                inet_reset_saddr(sk);
+                err = -EADDRINUSE;
+                goto out;
+        }
+
+        if (addr_type != IPV6_ADDR_ANY)
+                sk->sk_userlocks |= SOCK_BINDADDR_LOCK;
+        if (snum)
+                sk->sk_userlocks |= SOCK_BINDPORT_LOCK;
+        inet->sport = ntohs(inet->num);
+        inet->dport = 0;
+        inet->daddr = 0;
+out:
+        release_sock(sk);
+        return err;
+}
+
+int inet6_release(struct socket *sock)
+{
+        struct sock *sk = sock->sk;
+
+        if (sk == NULL)
+                return -EINVAL;
+
+        /* Free mc lists */
+        ipv6_sock_mc_close(sk);
+
+        /* Free ac lists */
+        ipv6_sock_ac_close(sk);
+
+        return inet_release(sock);
+}
+
+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)
+                kfree_skb(skb);
+
+        /* Free flowlabels */
+        fl6_free_socklist(sk);
+
+        /* Free tx options */
+
+        if ((opt = xchg(&np->opt, NULL)) != NULL)
+                sock_kfree_s(sk, opt, opt->tot_len);
+
+        return 0;
+}
+
+/*
+ *      This does both peername and sockname.
+ */
+ 
+int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
+                 int *uaddr_len, int peer)
+{
+        struct sockaddr_in6 *sin=(struct sockaddr_in6 *)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;
+        if (peer) {
+                if (!inet->dport)
+                        return -ENOTCONN;
+                if (((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) &&
+                    peer == 1)
+                        return -ENOTCONN;
+                sin->sin6_port = inet->dport;
+                ipv6_addr_copy(&sin->sin6_addr, &np->daddr);
+                if (np->sndflow)
+                        sin->sin6_flowinfo = np->flow_label;
+        } else {
+                if (ipv6_addr_any(&np->rcv_saddr))
+                        ipv6_addr_copy(&sin->sin6_addr, &np->saddr);
+                else
+                        ipv6_addr_copy(&sin->sin6_addr, &np->rcv_saddr);
+
+                sin->sin6_port = inet->sport;
+        }
+        if (ipv6_addr_type(&sin->sin6_addr) & IPV6_ADDR_LINKLOCAL)
+                sin->sin6_scope_id = sk->sk_bound_dev_if;
+        *uaddr_len = sizeof(*sin);
+        return(0);
+}
+
+int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
+{
+        struct sock *sk = sock->sk;
+        int err = -EINVAL;
+
+        switch(cmd) 
+        {
+        case SIOCGSTAMP:
+                return sock_get_timestamp(sk, (struct timeval __user *)arg);
+
+        case SIOCADDRT:
+        case SIOCDELRT:
+          
+                return(ipv6_route_ioctl(cmd,(void __user *)arg));
+
+        case SIOCSIFADDR:
+                return addrconf_add_ifaddr((void __user *) arg);
+        case SIOCDIFADDR:
+                return addrconf_del_ifaddr((void __user *) 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;
+        }
+        /*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
+};
+
+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,
+};
+
+static struct net_proto_family inet6_family_ops = {
+        .family = PF_INET6,
+        .create = inet6_create,
+        .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 struct inet_protosw rawv6_protosw = {
+        .type           = SOCK_RAW,
+        .protocol       = IPPROTO_IP,   /* wild card */
+        .prot           = &rawv6_prot,
+        .ops            = &inet6_sockraw_ops,
+        .capability     = CAP_NET_RAW,
+        .no_check       = UDP_CSUM_DEFAULT,
+        .flags          = INET_PROTOSW_REUSE,
+};
+
+void
+inet6_register_protosw(struct inet_protosw *p)
+{
+        struct list_head *lh;
+        struct inet_protosw *answer;
+        int protocol = p->protocol;
+        struct list_head *last_perm;
+
+        spin_lock_bh(&inetsw6_lock);
+
+        if (p->type >= SOCK_MAX)
+                goto out_illegal;
+
+        /* If we are trying to override a permanent protocol, bail. */
+        answer = NULL;
+        last_perm = &inetsw6[p->type];
+        list_for_each(lh, &inetsw6[p->type]) {
+                answer = list_entry(lh, struct inet_protosw, list);
+
+                /* Check only the non-wild match. */
+                if (INET_PROTOSW_PERMANENT & answer->flags) {
+                        if (protocol == answer->protocol)
+                                break;
+                        last_perm = lh;
+                }
+
+                answer = NULL;
+        }
+        if (answer)
+                goto out_permanent;
+
+        /* 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 
+         * system automatically returns to the old behavior.
+         */
+        list_add_rcu(&p->list, last_perm);
+out:
+        spin_unlock_bh(&inetsw6_lock);
+        return;
+
+out_permanent:
+        printk(KERN_ERR "Attempt to override permanent protocol %d.\n",
+               protocol);
+        goto out;
+
+out_illegal:
+        printk(KERN_ERR
+               "Ignoring attempt to register invalid socket type %d.\n",
+               p->type);
+        goto out;
+}
+
+void
+inet6_unregister_protosw(struct inet_protosw *p)
+{
+        if (INET_PROTOSW_PERMANENT & p->flags) {
+                printk(KERN_ERR
+                       "Attempt to unregister permanent protocol %d.\n",
+                       p->protocol);
+        } else {
+                spin_lock_bh(&inetsw6_lock);
+                list_del_rcu(&p->list);
+                spin_unlock_bh(&inetsw6_lock);
+
+                synchronize_net();
+        }
+}
+
+int
+snmp6_mib_init(void *ptr[2], size_t mibsize, size_t mibalign)
+{
+        if (ptr == NULL)
+                return -EINVAL;
+
+        ptr[0] = __alloc_percpu(mibsize, mibalign);
+        if (!ptr[0])
+                goto err0;
+
+        ptr[1] = __alloc_percpu(mibsize, mibalign);
+        if (!ptr[1])
+                goto err1;
+
+        return 0;
+
+err1:
+        free_percpu(ptr[0]);
+        ptr[0] = NULL;
+err0:
+        return -ENOMEM;
+}
+
+void
+snmp6_mib_free(void *ptr[2])
+{
+        if (ptr == NULL)
+                return;
+        if (ptr[0])
+                free_percpu(ptr[0]);
+        if (ptr[1])
+                free_percpu(ptr[1]);
+        ptr[0] = ptr[1] = NULL;
+}
+
+static int __init init_ipv6_mibs(void)
+{
+        if (snmp6_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)
+                goto err_icmp_mib;
+        if (snmp6_mib_init((void **)udp_stats_in6, sizeof (struct udp_mib),
+                           __alignof__(struct udp_mib)) < 0)
+                goto err_udp_mib;
+        return 0;
+
+err_udp_mib:
+        snmp6_mib_free((void **)icmpv6_statistics);
+err_icmp_mib:
+        snmp6_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);
+}
+
+extern int ipv6_misc_proc_init(void);
+
+static int __init inet6_init(void)
+{
+        struct sk_buff *dummy_skb;
+        struct list_head *r;
+        int err;
+
+#ifdef MODULE
+#if 0 /* FIXME --RR */
+        if (!mod_member_present(&__this_module, can_unload))
+          return -EINVAL;
+
+        __this_module.can_unload = &ipv6_unload;
+#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;
+
+        err = proto_register(&udpv6_prot, 1);
+        if (err)
+                goto out_unregister_tcp_proto;
+
+        err = proto_register(&rawv6_prot, 1);
+        if (err)
+                goto out_unregister_udp_proto;
+
+
+        /* Register the socket-side information for inet6_create.  */
+        for(r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r)
+                INIT_LIST_HEAD(r);
+
+        /* We MUST register RAW sockets before we create the ICMP6,
+         * IGMP6, or NDISC control sockets.
+         */
+        inet6_register_protosw(&rawv6_protosw);
+
+        /* 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);
+
+        /* Initialise ipv6 mibs */
+        err = init_ipv6_mibs();
+        if (err)
+                goto out_unregister_raw_proto;
+        
+        /*
+         *      ipngwg API draft makes clear that the correct semantics
+         *      for TCP and UDP is to consider one TCP and UDP instance
+         *      in a host availiable by both INET and INET6 APIs and
+         *      able to communicate via both network protocols.
+         */
+
+#ifdef CONFIG_SYSCTL
+        ipv6_sysctl_register();
+#endif
+        err = icmpv6_init(&inet6_family_ops);
+        if (err)
+                goto icmp_fail;
+        err = ndisc_init(&inet6_family_ops);
+        if (err)
+                goto ndisc_fail;
+        err = igmp6_init(&inet6_family_ops);
+        if (err)
+                goto igmp_fail;
+        /* Create /proc/foo6 entries. */
+#ifdef CONFIG_PROC_FS
+        err = -ENOMEM;
+        if (raw6_proc_init())
+                goto proc_raw6_fail;
+        if (tcp6_proc_init())
+                goto proc_tcp6_fail;
+        if (udp6_proc_init())
+                goto proc_udp6_fail;
+        if (ipv6_misc_proc_init())
+                goto proc_misc6_fail;
+
+        if (ac6_proc_init())
+                goto proc_anycast6_fail;
+        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();
+
+        /* Init v6 transport protocols. */
+        udpv6_init();
+        tcpv6_init();
+        err = 0;
+out:
+        return err;
+
+addrconf_fail:
+        ip6_flowlabel_cleanup();
+        ip6_route_cleanup();
+        ipv6_packet_cleanup();
+#ifdef CONFIG_PROC_FS
+        if6_proc_exit();
+proc_if6_fail:
+        ac6_proc_exit();
+proc_anycast6_fail:
+        ipv6_misc_proc_exit();
+proc_misc6_fail:
+        udp6_proc_exit();
+proc_udp6_fail:
+        tcp6_proc_exit();
+proc_tcp6_fail:
+        raw6_proc_exit();
+proc_raw6_fail:
+#endif
+        igmp6_cleanup();
+igmp_fail:
+        ndisc_cleanup();
+ndisc_fail:
+        icmpv6_cleanup();
+icmp_fail:
+#ifdef CONFIG_SYSCTL
+        ipv6_sysctl_unregister();
+#endif
+        cleanup_ipv6_mibs();
+out_unregister_raw_proto:
+        proto_unregister(&rawv6_prot);
+out_unregister_udp_proto:
+        proto_unregister(&udpv6_prot);
+out_unregister_tcp_proto:
+        proto_unregister(&tcpv6_prot);
+        goto out;
+}
+module_init(inet6_init);
+
+static void __exit inet6_exit(void)
+{
+        /* First of all disallow new sockets creation. */
+        sock_unregister(PF_INET6);
+#ifdef CONFIG_PROC_FS
+        if6_proc_exit();
+        ac6_proc_exit();
+        ipv6_misc_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();
+        igmp6_cleanup();
+        ndisc_cleanup();
+        icmpv6_cleanup();
+#ifdef CONFIG_SYSCTL
+        ipv6_sysctl_unregister();       
+#endif
+        cleanup_ipv6_mibs();
+        proto_unregister(&rawv6_prot);
+        proto_unregister(&udpv6_prot);
+        proto_unregister(&tcpv6_prot);
+}
+module_exit(inet6_exit);
+
+MODULE_ALIAS_NETPROTO(PF_INET6);