diff options
Diffstat (limited to 'net/ipv6/af_inet6.c')
-rw-r--r-- | net/ipv6/af_inet6.c | 867 |
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 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); |