Linux-2.6.12-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!
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
new file mode 100644
index 0000000..768b117
--- /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);