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!
This commit is contained in:
Linus Torvalds
867
net/ipv6/af_inet6.c
Normal file
867
net/ipv6/af_inet6.c
Normal file
@@ -0,0 +1,867 @@
|
||||
/*
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* PF_INET6 socket protocol family
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* Linux INET6 implementation
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*
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* Authors:
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* Pedro Roque <roque@di.fc.ul.pt>
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*
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* Adapted from linux/net/ipv4/af_inet.c
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*
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* $Id: af_inet6.c,v 1.66 2002/02/01 22:01:04 davem Exp $
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*
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* Fixes:
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* piggy, Karl Knutson : Socket protocol table
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* Hideaki YOSHIFUJI : sin6_scope_id support
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* Arnaldo Melo : check proc_net_create return, cleanups
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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||||
* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/module.h>
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#include <linux/config.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/socket.h>
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#include <linux/in.h>
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#include <linux/kernel.h>
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#include <linux/major.h>
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#include <linux/sched.h>
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#include <linux/timer.h>
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#include <linux/string.h>
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#include <linux/sockios.h>
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#include <linux/net.h>
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#include <linux/fcntl.h>
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#include <linux/mm.h>
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#include <linux/interrupt.h>
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#include <linux/proc_fs.h>
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#include <linux/stat.h>
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#include <linux/init.h>
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#include <linux/inet.h>
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#include <linux/netdevice.h>
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#include <linux/icmpv6.h>
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#include <linux/smp_lock.h>
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#include <net/ip.h>
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#include <net/ipv6.h>
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#include <net/udp.h>
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#include <net/tcp.h>
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#include <net/ipip.h>
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#include <net/protocol.h>
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#include <net/inet_common.h>
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#include <net/transp_v6.h>
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#include <net/ip6_route.h>
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#include <net/addrconf.h>
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#ifdef CONFIG_IPV6_TUNNEL
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#include <net/ip6_tunnel.h>
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#endif
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#include <asm/uaccess.h>
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#include <asm/system.h>
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MODULE_AUTHOR("Cast of dozens");
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MODULE_DESCRIPTION("IPv6 protocol stack for Linux");
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MODULE_LICENSE("GPL");
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/* IPv6 procfs goodies... */
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#ifdef CONFIG_PROC_FS
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extern int raw6_proc_init(void);
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extern void raw6_proc_exit(void);
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extern int tcp6_proc_init(void);
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extern void tcp6_proc_exit(void);
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extern int udp6_proc_init(void);
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extern void udp6_proc_exit(void);
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extern int ipv6_misc_proc_init(void);
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extern void ipv6_misc_proc_exit(void);
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extern int ac6_proc_init(void);
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extern void ac6_proc_exit(void);
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extern int if6_proc_init(void);
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extern void if6_proc_exit(void);
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#endif
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int sysctl_ipv6_bindv6only;
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#ifdef INET_REFCNT_DEBUG
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atomic_t inet6_sock_nr;
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#endif
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/* The inetsw table contains everything that inet_create needs to
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* build a new socket.
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*/
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static struct list_head inetsw6[SOCK_MAX];
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static DEFINE_SPINLOCK(inetsw6_lock);
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static void inet6_sock_destruct(struct sock *sk)
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{
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inet_sock_destruct(sk);
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#ifdef INET_REFCNT_DEBUG
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atomic_dec(&inet6_sock_nr);
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#endif
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}
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static __inline__ struct ipv6_pinfo *inet6_sk_generic(struct sock *sk)
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{
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const int offset = sk->sk_prot->obj_size - sizeof(struct ipv6_pinfo);
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return (struct ipv6_pinfo *)(((u8 *)sk) + offset);
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}
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static int inet6_create(struct socket *sock, int protocol)
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{
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struct inet_sock *inet;
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struct ipv6_pinfo *np;
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struct sock *sk;
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struct list_head *p;
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struct inet_protosw *answer;
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struct proto *answer_prot;
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unsigned char answer_flags;
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char answer_no_check;
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int rc;
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/* Look for the requested type/protocol pair. */
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answer = NULL;
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rcu_read_lock();
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list_for_each_rcu(p, &inetsw6[sock->type]) {
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answer = list_entry(p, struct inet_protosw, list);
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/* Check the non-wild match. */
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if (protocol == answer->protocol) {
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if (protocol != IPPROTO_IP)
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break;
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} else {
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/* Check for the two wild cases. */
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if (IPPROTO_IP == protocol) {
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protocol = answer->protocol;
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break;
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}
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if (IPPROTO_IP == answer->protocol)
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break;
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}
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answer = NULL;
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}
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rc = -ESOCKTNOSUPPORT;
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if (!answer)
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goto out_rcu_unlock;
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rc = -EPERM;
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if (answer->capability > 0 && !capable(answer->capability))
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goto out_rcu_unlock;
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rc = -EPROTONOSUPPORT;
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if (!protocol)
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goto out_rcu_unlock;
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sock->ops = answer->ops;
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answer_prot = answer->prot;
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answer_no_check = answer->no_check;
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answer_flags = answer->flags;
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rcu_read_unlock();
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BUG_TRAP(answer_prot->slab != NULL);
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rc = -ENOBUFS;
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sk = sk_alloc(PF_INET6, GFP_KERNEL, answer_prot, 1);
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if (sk == NULL)
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goto out;
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sock_init_data(sock, sk);
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rc = 0;
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sk->sk_no_check = answer_no_check;
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if (INET_PROTOSW_REUSE & answer_flags)
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sk->sk_reuse = 1;
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inet = inet_sk(sk);
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if (SOCK_RAW == sock->type) {
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inet->num = protocol;
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if (IPPROTO_RAW == protocol)
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inet->hdrincl = 1;
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}
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sk->sk_destruct = inet6_sock_destruct;
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sk->sk_family = PF_INET6;
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sk->sk_protocol = protocol;
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sk->sk_backlog_rcv = answer->prot->backlog_rcv;
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inet_sk(sk)->pinet6 = np = inet6_sk_generic(sk);
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np->hop_limit = -1;
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np->mcast_hops = -1;
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np->mc_loop = 1;
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np->pmtudisc = IPV6_PMTUDISC_WANT;
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np->ipv6only = sysctl_ipv6_bindv6only;
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/* Init the ipv4 part of the socket since we can have sockets
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* using v6 API for ipv4.
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*/
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inet->uc_ttl = -1;
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inet->mc_loop = 1;
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inet->mc_ttl = 1;
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inet->mc_index = 0;
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inet->mc_list = NULL;
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if (ipv4_config.no_pmtu_disc)
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inet->pmtudisc = IP_PMTUDISC_DONT;
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else
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inet->pmtudisc = IP_PMTUDISC_WANT;
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#ifdef INET_REFCNT_DEBUG
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atomic_inc(&inet6_sock_nr);
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atomic_inc(&inet_sock_nr);
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#endif
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if (inet->num) {
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/* It assumes that any protocol which allows
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* the user to assign a number at socket
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* creation time automatically shares.
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*/
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inet->sport = ntohs(inet->num);
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sk->sk_prot->hash(sk);
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}
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if (sk->sk_prot->init) {
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rc = sk->sk_prot->init(sk);
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if (rc) {
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sk_common_release(sk);
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goto out;
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}
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}
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out:
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return rc;
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out_rcu_unlock:
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rcu_read_unlock();
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goto out;
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}
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/* bind for INET6 API */
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int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
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{
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struct sockaddr_in6 *addr=(struct sockaddr_in6 *)uaddr;
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struct sock *sk = sock->sk;
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struct inet_sock *inet = inet_sk(sk);
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struct ipv6_pinfo *np = inet6_sk(sk);
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__u32 v4addr = 0;
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unsigned short snum;
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int addr_type = 0;
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int err = 0;
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/* If the socket has its own bind function then use it. */
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if (sk->sk_prot->bind)
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return sk->sk_prot->bind(sk, uaddr, addr_len);
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if (addr_len < SIN6_LEN_RFC2133)
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return -EINVAL;
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addr_type = ipv6_addr_type(&addr->sin6_addr);
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if ((addr_type & IPV6_ADDR_MULTICAST) && sock->type == SOCK_STREAM)
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return -EINVAL;
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snum = ntohs(addr->sin6_port);
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if (snum && snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE))
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return -EACCES;
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lock_sock(sk);
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/* Check these errors (active socket, double bind). */
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if (sk->sk_state != TCP_CLOSE || inet->num) {
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err = -EINVAL;
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goto out;
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}
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/* Check if the address belongs to the host. */
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if (addr_type == IPV6_ADDR_MAPPED) {
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v4addr = addr->sin6_addr.s6_addr32[3];
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if (inet_addr_type(v4addr) != RTN_LOCAL) {
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err = -EADDRNOTAVAIL;
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goto out;
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}
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} else {
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if (addr_type != IPV6_ADDR_ANY) {
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struct net_device *dev = NULL;
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if (addr_type & IPV6_ADDR_LINKLOCAL) {
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if (addr_len >= sizeof(struct sockaddr_in6) &&
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addr->sin6_scope_id) {
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/* Override any existing binding, if another one
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* is supplied by user.
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*/
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sk->sk_bound_dev_if = addr->sin6_scope_id;
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}
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||||
/* Binding to link-local address requires an interface */
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||||
if (!sk->sk_bound_dev_if) {
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||||
err = -EINVAL;
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||||
goto out;
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||||
}
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||||
dev = dev_get_by_index(sk->sk_bound_dev_if);
|
||||
if (!dev) {
|
||||
err = -ENODEV;
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||||
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);
|
||||
Reference in New Issue
Block a user