*
* 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
#include <linux/proc_fs.h>
#include <linux/stat.h>
#include <linux/init.h>
+#include <linux/slab.h>
#include <linux/inet.h>
#include <linux/netdevice.h>
#include <net/ipip.h>
#include <net/protocol.h>
#include <net/inet_common.h>
+#include <net/route.h>
#include <net/transp_v6.h>
#include <net/ip6_route.h>
#include <net/addrconf.h>
#include <asm/uaccess.h>
#include <asm/system.h>
+#include <linux/mroute6.h>
MODULE_AUTHOR("Cast of dozens");
MODULE_DESCRIPTION("IPv6 protocol stack for Linux");
MODULE_LICENSE("GPL");
-int sysctl_ipv6_bindv6only __read_mostly;
-
/* The inetsw6 table contains everything that inet6_create needs to
* build a new socket.
*/
static struct list_head inetsw6[SOCK_MAX];
static DEFINE_SPINLOCK(inetsw6_lock);
+struct ipv6_params ipv6_defaults = {
+ .disable_ipv6 = 0,
+ .autoconf = 1,
+};
+
+static int disable_ipv6_mod = 0;
+
+module_param_named(disable, disable_ipv6_mod, int, 0444);
+MODULE_PARM_DESC(disable, "Disable IPv6 module such that it is non-functional");
+
+module_param_named(disable_ipv6, ipv6_defaults.disable_ipv6, int, 0444);
+MODULE_PARM_DESC(disable_ipv6, "Disable IPv6 on all interfaces");
+
+module_param_named(autoconf, ipv6_defaults.autoconf, int, 0444);
+MODULE_PARM_DESC(autoconf, "Enable IPv6 address autoconfiguration on all interfaces");
+
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 net *net, struct socket *sock, int protocol)
+static int inet6_create(struct net *net, struct socket *sock, int protocol,
+ int kern)
{
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;
int try_loading_module = 0;
int err;
- if (net != &init_net)
- return -EAFNOSUPPORT;
-
if (sock->type != SOCK_RAW &&
sock->type != SOCK_DGRAM &&
!inet_ehash_secret)
build_ehash_secret();
/* Look for the requested type/protocol pair. */
- answer = NULL;
lookup_protocol:
err = -ESOCKTNOSUPPORT;
rcu_read_lock();
- list_for_each_rcu(p, &inetsw6[sock->type]) {
- answer = list_entry(p, struct inet_protosw, list);
+ list_for_each_entry_rcu(answer, &inetsw6[sock->type], list) {
+ err = 0;
/* Check the non-wild match. */
if (protocol == answer->protocol) {
if (protocol != IPPROTO_IP)
break;
}
err = -EPROTONOSUPPORT;
- answer = NULL;
}
- if (!answer) {
+ if (err) {
if (try_loading_module < 2) {
rcu_read_unlock();
/*
}
err = -EPERM;
- if (answer->capability > 0 && !capable(answer->capability))
+ if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW))
goto out_rcu_unlock;
sock->ops = answer->ops;
answer_flags = answer->flags;
rcu_read_unlock();
- BUG_TRAP(answer_prot->slab != NULL);
+ WARN_ON(answer_prot->slab == NULL);
err = -ENOBUFS;
sk = sk_alloc(net, PF_INET6, GFP_KERNEL, answer_prot);
inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0;
if (SOCK_RAW == sock->type) {
- inet->num = protocol;
+ inet->inet_num = protocol;
if (IPPROTO_RAW == protocol)
inet->hdrincl = 1;
}
inet_sk(sk)->pinet6 = np = inet6_sk_generic(sk);
np->hop_limit = -1;
- np->mcast_hops = -1;
+ np->mcast_hops = IPV6_DEFAULT_MCASTHOPS;
np->mc_loop = 1;
np->pmtudisc = IPV6_PMTUDISC_WANT;
- np->ipv6only = sysctl_ipv6_bindv6only;
+ np->ipv6only = net->ipv6.sysctl.bindv6only;
/* Init the ipv4 part of the socket since we can have sockets
* using v6 API for ipv4.
*/
sk_refcnt_debug_inc(sk);
- if (inet->num) {
+ if (inet->inet_num) {
/* It assumes that any protocol which allows
* the user to assign a number at socket
* creation time automatically shares.
*/
- inet->sport = htons(inet->num);
+ inet->inet_sport = htons(inet->inet_num);
sk->sk_prot->hash(sk);
}
if (sk->sk_prot->init) {
struct sock *sk = sock->sk;
struct inet_sock *inet = inet_sk(sk);
struct ipv6_pinfo *np = inet6_sk(sk);
+ struct net *net = sock_net(sk);
__be32 v4addr = 0;
unsigned short snum;
int addr_type = 0;
lock_sock(sk);
/* Check these errors (active socket, double bind). */
- if (sk->sk_state != TCP_CLOSE || inet->num) {
+ if (sk->sk_state != TCP_CLOSE || inet->inet_num) {
err = -EINVAL;
goto out;
}
/* Check if the address belongs to the host. */
if (addr_type == IPV6_ADDR_MAPPED) {
+ int chk_addr_ret;
+
+ /* Binding to v4-mapped address on a v6-only socket
+ * makes no sense
+ */
+ if (np->ipv6only) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ /* Reproduce AF_INET checks to make the bindings consitant */
v4addr = addr->sin6_addr.s6_addr32[3];
- if (inet_addr_type(v4addr) != RTN_LOCAL) {
+ chk_addr_ret = inet_addr_type(net, v4addr);
+ if (!sysctl_ip_nonlocal_bind &&
+ !(inet->freebind || inet->transparent) &&
+ v4addr != htonl(INADDR_ANY) &&
+ chk_addr_ret != RTN_LOCAL &&
+ chk_addr_ret != RTN_MULTICAST &&
+ chk_addr_ret != RTN_BROADCAST) {
err = -EADDRNOTAVAIL;
goto out;
}
if (addr_type != IPV6_ADDR_ANY) {
struct net_device *dev = NULL;
+ rcu_read_lock();
if (addr_type & IPV6_ADDR_LINKLOCAL) {
if (addr_len >= sizeof(struct sockaddr_in6) &&
addr->sin6_scope_id) {
/* Binding to link-local address requires an interface */
if (!sk->sk_bound_dev_if) {
err = -EINVAL;
- goto out;
+ goto out_unlock;
}
- dev = dev_get_by_index(&init_net, sk->sk_bound_dev_if);
+ dev = dev_get_by_index_rcu(net, sk->sk_bound_dev_if);
if (!dev) {
err = -ENODEV;
- goto out;
+ goto out_unlock;
}
}
*/
v4addr = LOOPBACK4_IPV6;
if (!(addr_type & IPV6_ADDR_MULTICAST)) {
- if (!ipv6_chk_addr(&addr->sin6_addr, dev, 0)) {
- if (dev)
- dev_put(dev);
+ if (!ipv6_chk_addr(net, &addr->sin6_addr,
+ dev, 0)) {
err = -EADDRNOTAVAIL;
- goto out;
+ goto out_unlock;
}
}
- if (dev)
- dev_put(dev);
+ rcu_read_unlock();
}
}
- inet->rcv_saddr = v4addr;
- inet->saddr = v4addr;
+ inet->inet_rcv_saddr = v4addr;
+ inet->inet_saddr = v4addr;
ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr);
goto out;
}
- if (addr_type != IPV6_ADDR_ANY)
+ if (addr_type != IPV6_ADDR_ANY) {
sk->sk_userlocks |= SOCK_BINDADDR_LOCK;
+ if (addr_type != IPV6_ADDR_MAPPED)
+ np->ipv6only = 1;
+ }
if (snum)
sk->sk_userlocks |= SOCK_BINDPORT_LOCK;
- inet->sport = htons(inet->num);
- inet->dport = 0;
- inet->daddr = 0;
+ inet->inet_sport = htons(inet->inet_num);
+ inet->inet_dport = 0;
+ inet->inet_daddr = 0;
out:
release_sock(sk);
return err;
+out_unlock:
+ rcu_read_unlock();
+ goto out;
}
EXPORT_SYMBOL(inet6_bind);
EXPORT_SYMBOL(inet6_release);
-int inet6_destroy_sock(struct sock *sk)
+void inet6_destroy_sock(struct sock *sk)
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct sk_buff *skb;
if ((opt = xchg(&np->opt, NULL)) != NULL)
sock_kfree_s(sk, opt, opt->tot_len);
-
- return 0;
}
EXPORT_SYMBOL_GPL(inet6_destroy_sock);
sin->sin6_flowinfo = 0;
sin->sin6_scope_id = 0;
if (peer) {
- if (!inet->dport)
+ if (!inet->inet_dport)
return -ENOTCONN;
if (((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) &&
peer == 1)
return -ENOTCONN;
- sin->sin6_port = inet->dport;
+ sin->sin6_port = inet->inet_dport;
ipv6_addr_copy(&sin->sin6_addr, &np->daddr);
if (np->sndflow)
sin->sin6_flowinfo = np->flow_label;
else
ipv6_addr_copy(&sin->sin6_addr, &np->rcv_saddr);
- sin->sin6_port = inet->sport;
+ sin->sin6_port = inet->inet_sport;
}
if (ipv6_addr_type(&sin->sin6_addr) & IPV6_ADDR_LINKLOCAL)
sin->sin6_scope_id = sk->sk_bound_dev_if;
int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{
struct sock *sk = sock->sk;
+ struct net *net = sock_net(sk);
switch(cmd)
{
case SIOCADDRT:
case SIOCDELRT:
- return(ipv6_route_ioctl(cmd,(void __user *)arg));
+ return(ipv6_route_ioctl(net, cmd, (void __user *)arg));
case SIOCSIFADDR:
- return addrconf_add_ifaddr((void __user *) arg);
+ return addrconf_add_ifaddr(net, (void __user *) arg);
case SIOCDIFADDR:
- return addrconf_del_ifaddr((void __user *) arg);
+ return addrconf_del_ifaddr(net, (void __user *) arg);
case SIOCSIFDSTADDR:
- return addrconf_set_dstaddr((void __user *) arg);
+ return addrconf_set_dstaddr(net, (void __user *) arg);
default:
if (!sk->sk_prot->ioctl)
return -ENOIOCTLCMD;
#endif
};
-static struct net_proto_family inet6_family_ops = {
+static const struct net_proto_family inet6_family_ops = {
.family = PF_INET6,
.create = inet6_create,
.owner = THIS_MODULE,
};
-/* Same as inet6_dgram_ops, sans udp_poll. */
-static const struct proto_ops inet6_sockraw_ops = {
- .family = PF_INET6,
- .owner = THIS_MODULE,
- .release = inet6_release,
- .bind = inet6_bind,
- .connect = inet_dgram_connect, /* ok */
- .socketpair = sock_no_socketpair, /* a do nothing */
- .accept = sock_no_accept, /* a do nothing */
- .getname = inet6_getname,
- .poll = datagram_poll, /* ok */
- .ioctl = inet6_ioctl, /* must change */
- .listen = sock_no_listen, /* ok */
- .shutdown = inet_shutdown, /* ok */
- .setsockopt = sock_common_setsockopt, /* ok */
- .getsockopt = sock_common_getsockopt, /* ok */
- .sendmsg = inet_sendmsg, /* ok */
- .recvmsg = sock_common_recvmsg, /* ok */
- .mmap = sock_no_mmap,
- .sendpage = sock_no_sendpage,
-#ifdef CONFIG_COMPAT
- .compat_setsockopt = compat_sock_common_setsockopt,
- .compat_getsockopt = compat_sock_common_getsockopt,
-#endif
-};
-
-static struct inet_protosw rawv6_protosw = {
- .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)
+int inet6_register_protosw(struct inet_protosw *p)
{
struct list_head *lh;
struct inet_protosw *answer;
- int protocol = p->protocol;
struct list_head *last_perm;
+ int protocol = p->protocol;
+ int ret;
spin_lock_bh(&inetsw6_lock);
+ ret = -EINVAL;
if (p->type >= SOCK_MAX)
goto out_illegal;
/* If we are trying to override a permanent protocol, bail. */
answer = NULL;
+ ret = -EPERM;
last_perm = &inetsw6[p->type];
list_for_each(lh, &inetsw6[p->type]) {
answer = list_entry(lh, struct inet_protosw, list);
* system automatically returns to the old behavior.
*/
list_add_rcu(&p->list, last_perm);
+ ret = 0;
out:
spin_unlock_bh(&inetsw6_lock);
- return;
+ return ret;
out_permanent:
printk(KERN_ERR "Attempt to override permanent protocol %d.\n",
ipv6_addr_copy(&fl.fl6_src, &np->saddr);
fl.fl6_flowlabel = np->flow_label;
fl.oif = sk->sk_bound_dev_if;
- fl.fl_ip_dport = inet->dport;
- fl.fl_ip_sport = inet->sport;
+ fl.mark = sk->sk_mark;
+ fl.fl_ip_dport = inet->inet_dport;
+ fl.fl_ip_sport = inet->inet_sport;
security_sk_classify_flow(sk, &fl);
if (np->opt && np->opt->srcrt) {
if (final_p)
ipv6_addr_copy(&fl.fl6_dst, final_p);
- if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) {
+ if ((err = xfrm_lookup(sock_net(sk), &dst, &fl, sk, 0)) < 0) {
sk->sk_err_soft = -err;
return err;
}
EXPORT_SYMBOL_GPL(ipv6_opt_accepted);
-static int __init init_ipv6_mibs(void)
+static int ipv6_gso_pull_exthdrs(struct sk_buff *skb, int proto)
+{
+ const struct inet6_protocol *ops = NULL;
+
+ for (;;) {
+ struct ipv6_opt_hdr *opth;
+ int len;
+
+ if (proto != NEXTHDR_HOP) {
+ ops = rcu_dereference(inet6_protos[proto]);
+
+ if (unlikely(!ops))
+ break;
+
+ if (!(ops->flags & INET6_PROTO_GSO_EXTHDR))
+ break;
+ }
+
+ if (unlikely(!pskb_may_pull(skb, 8)))
+ break;
+
+ opth = (void *)skb->data;
+ len = ipv6_optlen(opth);
+
+ if (unlikely(!pskb_may_pull(skb, len)))
+ break;
+
+ proto = opth->nexthdr;
+ __skb_pull(skb, len);
+ }
+
+ return proto;
+}
+
+static int ipv6_gso_send_check(struct sk_buff *skb)
+{
+ struct ipv6hdr *ipv6h;
+ const struct inet6_protocol *ops;
+ int err = -EINVAL;
+
+ if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h))))
+ goto out;
+
+ ipv6h = ipv6_hdr(skb);
+ __skb_pull(skb, sizeof(*ipv6h));
+ err = -EPROTONOSUPPORT;
+
+ rcu_read_lock();
+ ops = rcu_dereference(inet6_protos[
+ ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr)]);
+
+ if (likely(ops && ops->gso_send_check)) {
+ skb_reset_transport_header(skb);
+ err = ops->gso_send_check(skb);
+ }
+ rcu_read_unlock();
+
+out:
+ return err;
+}
+
+static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, int features)
+{
+ struct sk_buff *segs = ERR_PTR(-EINVAL);
+ struct ipv6hdr *ipv6h;
+ const struct inet6_protocol *ops;
+ int proto;
+ struct frag_hdr *fptr;
+ unsigned int unfrag_ip6hlen;
+ u8 *prevhdr;
+ int offset = 0;
+
+ if (!(features & NETIF_F_V6_CSUM))
+ features &= ~NETIF_F_SG;
+
+ if (unlikely(skb_shinfo(skb)->gso_type &
+ ~(SKB_GSO_UDP |
+ SKB_GSO_DODGY |
+ SKB_GSO_TCP_ECN |
+ SKB_GSO_TCPV6 |
+ 0)))
+ goto out;
+
+ if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h))))
+ goto out;
+
+ ipv6h = ipv6_hdr(skb);
+ __skb_pull(skb, sizeof(*ipv6h));
+ segs = ERR_PTR(-EPROTONOSUPPORT);
+
+ proto = ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr);
+ rcu_read_lock();
+ ops = rcu_dereference(inet6_protos[proto]);
+ if (likely(ops && ops->gso_segment)) {
+ skb_reset_transport_header(skb);
+ segs = ops->gso_segment(skb, features);
+ }
+ rcu_read_unlock();
+
+ if (unlikely(IS_ERR(segs)))
+ goto out;
+
+ for (skb = segs; skb; skb = skb->next) {
+ ipv6h = ipv6_hdr(skb);
+ ipv6h->payload_len = htons(skb->len - skb->mac_len -
+ sizeof(*ipv6h));
+ if (proto == IPPROTO_UDP) {
+ unfrag_ip6hlen = ip6_find_1stfragopt(skb, &prevhdr);
+ fptr = (struct frag_hdr *)(skb_network_header(skb) +
+ unfrag_ip6hlen);
+ fptr->frag_off = htons(offset);
+ if (skb->next != NULL)
+ fptr->frag_off |= htons(IP6_MF);
+ offset += (ntohs(ipv6h->payload_len) -
+ sizeof(struct frag_hdr));
+ }
+ }
+
+out:
+ return segs;
+}
+
+struct ipv6_gro_cb {
+ struct napi_gro_cb napi;
+ int proto;
+};
+
+#define IPV6_GRO_CB(skb) ((struct ipv6_gro_cb *)(skb)->cb)
+
+static struct sk_buff **ipv6_gro_receive(struct sk_buff **head,
+ struct sk_buff *skb)
+{
+ const struct inet6_protocol *ops;
+ struct sk_buff **pp = NULL;
+ struct sk_buff *p;
+ struct ipv6hdr *iph;
+ unsigned int nlen;
+ unsigned int hlen;
+ unsigned int off;
+ int flush = 1;
+ int proto;
+ __wsum csum;
+
+ off = skb_gro_offset(skb);
+ hlen = off + sizeof(*iph);
+ iph = skb_gro_header_fast(skb, off);
+ if (skb_gro_header_hard(skb, hlen)) {
+ iph = skb_gro_header_slow(skb, hlen, off);
+ if (unlikely(!iph))
+ goto out;
+ }
+
+ skb_gro_pull(skb, sizeof(*iph));
+ skb_set_transport_header(skb, skb_gro_offset(skb));
+
+ flush += ntohs(iph->payload_len) != skb_gro_len(skb);
+
+ rcu_read_lock();
+ proto = iph->nexthdr;
+ ops = rcu_dereference(inet6_protos[proto]);
+ if (!ops || !ops->gro_receive) {
+ __pskb_pull(skb, skb_gro_offset(skb));
+ proto = ipv6_gso_pull_exthdrs(skb, proto);
+ skb_gro_pull(skb, -skb_transport_offset(skb));
+ skb_reset_transport_header(skb);
+ __skb_push(skb, skb_gro_offset(skb));
+
+ if (!ops || !ops->gro_receive)
+ goto out_unlock;
+
+ iph = ipv6_hdr(skb);
+ }
+
+ IPV6_GRO_CB(skb)->proto = proto;
+
+ flush--;
+ nlen = skb_network_header_len(skb);
+
+ for (p = *head; p; p = p->next) {
+ struct ipv6hdr *iph2;
+
+ if (!NAPI_GRO_CB(p)->same_flow)
+ continue;
+
+ iph2 = ipv6_hdr(p);
+
+ /* All fields must match except length. */
+ if (nlen != skb_network_header_len(p) ||
+ memcmp(iph, iph2, offsetof(struct ipv6hdr, payload_len)) ||
+ memcmp(&iph->nexthdr, &iph2->nexthdr,
+ nlen - offsetof(struct ipv6hdr, nexthdr))) {
+ NAPI_GRO_CB(p)->same_flow = 0;
+ continue;
+ }
+
+ NAPI_GRO_CB(p)->flush |= flush;
+ }
+
+ NAPI_GRO_CB(skb)->flush |= flush;
+
+ csum = skb->csum;
+ skb_postpull_rcsum(skb, iph, skb_network_header_len(skb));
+
+ pp = ops->gro_receive(head, skb);
+
+ skb->csum = csum;
+
+out_unlock:
+ rcu_read_unlock();
+
+out:
+ NAPI_GRO_CB(skb)->flush |= flush;
+
+ return pp;
+}
+
+static int ipv6_gro_complete(struct sk_buff *skb)
+{
+ const struct inet6_protocol *ops;
+ struct ipv6hdr *iph = ipv6_hdr(skb);
+ int err = -ENOSYS;
+
+ iph->payload_len = htons(skb->len - skb_network_offset(skb) -
+ sizeof(*iph));
+
+ rcu_read_lock();
+ ops = rcu_dereference(inet6_protos[IPV6_GRO_CB(skb)->proto]);
+ if (WARN_ON(!ops || !ops->gro_complete))
+ goto out_unlock;
+
+ err = ops->gro_complete(skb);
+
+out_unlock:
+ rcu_read_unlock();
+
+ return err;
+}
+
+static struct packet_type ipv6_packet_type __read_mostly = {
+ .type = cpu_to_be16(ETH_P_IPV6),
+ .func = ipv6_rcv,
+ .gso_send_check = ipv6_gso_send_check,
+ .gso_segment = ipv6_gso_segment,
+ .gro_receive = ipv6_gro_receive,
+ .gro_complete = ipv6_gro_complete,
+};
+
+static int __init ipv6_packet_init(void)
+{
+ dev_add_pack(&ipv6_packet_type);
+ return 0;
+}
+
+static void ipv6_packet_cleanup(void)
+{
+ dev_remove_pack(&ipv6_packet_type);
+}
+
+static int __net_init ipv6_init_mibs(struct net *net)
{
- if (snmp_mib_init((void **)ipv6_statistics,
+ if (snmp_mib_init((void __percpu **)net->mib.udp_stats_in6,
+ sizeof (struct udp_mib)) < 0)
+ return -ENOMEM;
+ if (snmp_mib_init((void __percpu **)net->mib.udplite_stats_in6,
+ sizeof (struct udp_mib)) < 0)
+ goto err_udplite_mib;
+ if (snmp_mib_init((void __percpu **)net->mib.ipv6_statistics,
sizeof(struct ipstats_mib)) < 0)
goto err_ip_mib;
- if (snmp_mib_init((void **)icmpv6_statistics,
+ if (snmp_mib_init((void __percpu **)net->mib.icmpv6_statistics,
sizeof(struct icmpv6_mib)) < 0)
goto err_icmp_mib;
- if (snmp_mib_init((void **)icmpv6msg_statistics,
+ if (snmp_mib_init((void __percpu **)net->mib.icmpv6msg_statistics,
sizeof(struct icmpv6msg_mib)) < 0)
goto err_icmpmsg_mib;
- if (snmp_mib_init((void **)udp_stats_in6, sizeof (struct udp_mib)) < 0)
- goto err_udp_mib;
- if (snmp_mib_init((void **)udplite_stats_in6,
- sizeof (struct udp_mib)) < 0)
- goto err_udplite_mib;
return 0;
-err_udplite_mib:
- snmp_mib_free((void **)udp_stats_in6);
-err_udp_mib:
- snmp_mib_free((void **)icmpv6msg_statistics);
err_icmpmsg_mib:
- snmp_mib_free((void **)icmpv6_statistics);
+ snmp_mib_free((void __percpu **)net->mib.icmpv6_statistics);
err_icmp_mib:
- snmp_mib_free((void **)ipv6_statistics);
+ snmp_mib_free((void __percpu **)net->mib.ipv6_statistics);
err_ip_mib:
+ snmp_mib_free((void __percpu **)net->mib.udplite_stats_in6);
+err_udplite_mib:
+ snmp_mib_free((void __percpu **)net->mib.udp_stats_in6);
return -ENOMEM;
+}
+static void ipv6_cleanup_mibs(struct net *net)
+{
+ snmp_mib_free((void __percpu **)net->mib.udp_stats_in6);
+ snmp_mib_free((void __percpu **)net->mib.udplite_stats_in6);
+ snmp_mib_free((void __percpu **)net->mib.ipv6_statistics);
+ snmp_mib_free((void __percpu **)net->mib.icmpv6_statistics);
+ snmp_mib_free((void __percpu **)net->mib.icmpv6msg_statistics);
}
-static void cleanup_ipv6_mibs(void)
+static int __net_init inet6_net_init(struct net *net)
{
- snmp_mib_free((void **)ipv6_statistics);
- snmp_mib_free((void **)icmpv6_statistics);
- snmp_mib_free((void **)icmpv6msg_statistics);
- snmp_mib_free((void **)udp_stats_in6);
- snmp_mib_free((void **)udplite_stats_in6);
+ int err = 0;
+
+ net->ipv6.sysctl.bindv6only = 0;
+ net->ipv6.sysctl.icmpv6_time = 1*HZ;
+
+ err = ipv6_init_mibs(net);
+ if (err)
+ return err;
+#ifdef CONFIG_PROC_FS
+ err = udp6_proc_init(net);
+ if (err)
+ goto out;
+ err = tcp6_proc_init(net);
+ if (err)
+ goto proc_tcp6_fail;
+ err = ac6_proc_init(net);
+ if (err)
+ goto proc_ac6_fail;
+#endif
+ return err;
+
+#ifdef CONFIG_PROC_FS
+proc_ac6_fail:
+ tcp6_proc_exit(net);
+proc_tcp6_fail:
+ udp6_proc_exit(net);
+out:
+ ipv6_cleanup_mibs(net);
+ return err;
+#endif
}
+static void __net_exit inet6_net_exit(struct net *net)
+{
+#ifdef CONFIG_PROC_FS
+ udp6_proc_exit(net);
+ tcp6_proc_exit(net);
+ ac6_proc_exit(net);
+#endif
+ ipv6_cleanup_mibs(net);
+}
+
+static struct pernet_operations inet6_net_ops = {
+ .init = inet6_net_init,
+ .exit = inet6_net_exit,
+};
+
static int __init inet6_init(void)
{
struct sk_buff *dummy_skb;
struct list_head *r;
- int err;
+ int err = 0;
BUILD_BUG_ON(sizeof(struct inet6_skb_parm) > sizeof(dummy_skb->cb));
-#ifdef MODULE
-#if 0 /* FIXME --RR */
- if (!mod_member_present(&__this_module, can_unload))
- return -EINVAL;
+ /* Register the socket-side information for inet6_create. */
+ for(r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r)
+ INIT_LIST_HEAD(r);
- __this_module.can_unload = &ipv6_unload;
-#endif
-#endif
+ if (disable_ipv6_mod) {
+ printk(KERN_INFO
+ "IPv6: Loaded, but administratively disabled, "
+ "reboot required to enable\n");
+ goto out;
+ }
err = proto_register(&tcpv6_prot, 1);
if (err)
goto out_unregister_udplite_proto;
- /* Register the socket-side information for inet6_create. */
- for(r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r)
- INIT_LIST_HEAD(r);
-
/* We MUST register RAW sockets before we create the ICMP6,
* IGMP6, or NDISC control sockets.
*/
- inet6_register_protosw(&rawv6_protosw);
+ err = rawv6_init();
+ if (err)
+ goto out_unregister_raw_proto;
/* Register the family here so that the init calls below will
* be able to create sockets. (?? is this dangerous ??)
*/
err = sock_register(&inet6_family_ops);
if (err)
- goto out_unregister_raw_proto;
+ goto out_sock_register_fail;
- /* Initialise ipv6 mibs */
- err = init_ipv6_mibs();
+#ifdef CONFIG_SYSCTL
+ err = ipv6_static_sysctl_register();
if (err)
- goto out_unregister_sock;
-
+ goto static_sysctl_fail;
+#endif
/*
* ipngwg API draft makes clear that the correct semantics
* for TCP and UDP is to consider one TCP and UDP instance
* able to communicate via both network protocols.
*/
-#ifdef CONFIG_SYSCTL
- ipv6_sysctl_register();
-#endif
- err = icmpv6_init(&inet6_family_ops);
+ err = register_pernet_subsys(&inet6_net_ops);
+ if (err)
+ goto register_pernet_fail;
+ err = icmpv6_init();
if (err)
goto icmp_fail;
- err = ndisc_init(&inet6_family_ops);
+ err = ip6_mr_init();
+ if (err)
+ goto ipmr_fail;
+ err = ndisc_init();
if (err)
goto ndisc_fail;
- err = igmp6_init(&inet6_family_ops);
+ err = igmp6_init();
if (err)
goto igmp_fail;
err = ipv6_netfilter_init();
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 (udplite6_proc_init())
goto proc_udplite6_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
err = ip6_route_init();
if (err)
goto ip6_route_fail;
- ip6_flowlabel_init();
+ err = ip6_flowlabel_init();
+ if (err)
+ goto ip6_flowlabel_fail;
err = addrconf_init();
if (err)
goto addrconf_fail;
/* Init v6 extension headers. */
- ipv6_rthdr_init();
- ipv6_frag_init();
- ipv6_nodata_init();
- ipv6_destopt_init();
+ err = ipv6_exthdrs_init();
+ if (err)
+ goto ipv6_exthdrs_fail;
+
+ err = ipv6_frag_init();
+ if (err)
+ goto ipv6_frag_fail;
/* Init v6 transport protocols. */
- udpv6_init();
- udplitev6_init();
- tcpv6_init();
+ err = udpv6_init();
+ if (err)
+ goto udpv6_fail;
- ipv6_packet_init();
- err = 0;
+ err = udplitev6_init();
+ if (err)
+ goto udplitev6_fail;
+
+ err = tcpv6_init();
+ if (err)
+ goto tcpv6_fail;
+
+ err = ipv6_packet_init();
+ if (err)
+ goto ipv6_packet_fail;
+
+#ifdef CONFIG_SYSCTL
+ err = ipv6_sysctl_register();
+ if (err)
+ goto sysctl_fail;
+#endif
out:
return err;
+#ifdef CONFIG_SYSCTL
+sysctl_fail:
+ ipv6_packet_cleanup();
+#endif
+ipv6_packet_fail:
+ tcpv6_exit();
+tcpv6_fail:
+ udplitev6_exit();
+udplitev6_fail:
+ udpv6_exit();
+udpv6_fail:
+ ipv6_frag_exit();
+ipv6_frag_fail:
+ ipv6_exthdrs_exit();
+ipv6_exthdrs_fail:
+ addrconf_cleanup();
addrconf_fail:
ip6_flowlabel_cleanup();
+ip6_flowlabel_fail:
ip6_route_cleanup();
ip6_route_fail:
#ifdef CONFIG_PROC_FS
if6_proc_exit();
proc_if6_fail:
- ac6_proc_exit();
-proc_anycast6_fail:
ipv6_misc_proc_exit();
proc_misc6_fail:
udplite6_proc_exit();
proc_udplite6_fail:
- udp6_proc_exit();
-proc_udp6_fail:
- tcp6_proc_exit();
-proc_tcp6_fail:
raw6_proc_exit();
proc_raw6_fail:
#endif
igmp_fail:
ndisc_cleanup();
ndisc_fail:
+ ip6_mr_cleanup();
+ipmr_fail:
icmpv6_cleanup();
icmp_fail:
+ unregister_pernet_subsys(&inet6_net_ops);
+register_pernet_fail:
#ifdef CONFIG_SYSCTL
- ipv6_sysctl_unregister();
+ ipv6_static_sysctl_unregister();
+static_sysctl_fail:
#endif
- cleanup_ipv6_mibs();
-out_unregister_sock:
sock_unregister(PF_INET6);
rtnl_unregister_all(PF_INET6);
+out_sock_register_fail:
+ rawv6_exit();
out_unregister_raw_proto:
proto_unregister(&rawv6_prot);
out_unregister_udplite_proto:
static void __exit inet6_exit(void)
{
+ if (disable_ipv6_mod)
+ return;
+
/* First of all disallow new sockets creation. */
sock_unregister(PF_INET6);
/* Disallow any further netlink messages */
rtnl_unregister_all(PF_INET6);
+#ifdef CONFIG_SYSCTL
+ ipv6_sysctl_unregister();
+#endif
+ udpv6_exit();
+ udplitev6_exit();
+ tcpv6_exit();
+
/* Cleanup code parts. */
ipv6_packet_cleanup();
-
+ ipv6_frag_exit();
+ ipv6_exthdrs_exit();
addrconf_cleanup();
ip6_flowlabel_cleanup();
ip6_route_cleanup();
/* Cleanup code parts. */
if6_proc_exit();
- ac6_proc_exit();
ipv6_misc_proc_exit();
udplite6_proc_exit();
- udp6_proc_exit();
- tcp6_proc_exit();
raw6_proc_exit();
#endif
ipv6_netfilter_fini();
igmp6_cleanup();
ndisc_cleanup();
+ ip6_mr_cleanup();
icmpv6_cleanup();
+ rawv6_exit();
+
+ unregister_pernet_subsys(&inet6_net_ops);
#ifdef CONFIG_SYSCTL
- ipv6_sysctl_unregister();
+ ipv6_static_sysctl_unregister();
#endif
- cleanup_ipv6_mibs();
proto_unregister(&rawv6_prot);
proto_unregister(&udplitev6_prot);
proto_unregister(&udpv6_prot);
proto_unregister(&tcpv6_prot);
+
+ rcu_barrier(); /* Wait for completion of call_rcu()'s */
}
module_exit(inet6_exit);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff