1 files changed, 183 insertions, 44 deletions

diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index f0aa97738746..3c6aafb02183 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -61,6 +61,9 @@
 
 #include <asm/uaccess.h>
 #include <asm/system.h>
+#ifdef CONFIG_IPV6_MROUTE
+#include <linux/mroute6.h>
+#endif
 
 MODULE_AUTHOR("Cast of dozens");
 MODULE_DESCRIPTION("IPv6 protocol stack for Linux");
@@ -92,9 +95,6 @@ static int inet6_create(struct net *net, struct socket *sock, int protocol)
         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)
@@ -248,6 +248,7 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
         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;
@@ -278,7 +279,7 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
         /* 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(&init_net, v4addr) != RTN_LOCAL) {
+                if (inet_addr_type(net, v4addr) != RTN_LOCAL) {
                         err = -EADDRNOTAVAIL;
                         goto out;
                 }
@@ -300,7 +301,7 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
                                         err = -EINVAL;
                                         goto out;
                                 }
-                                dev = dev_get_by_index(&init_net, sk->sk_bound_dev_if);
+                                dev = dev_get_by_index(net, sk->sk_bound_dev_if);
                                 if (!dev) {
                                         err = -ENODEV;
                                         goto out;
@@ -312,7 +313,7 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
                          */
                         v4addr = LOOPBACK4_IPV6;
                         if (!(addr_type & IPV6_ADDR_MULTICAST)) {
-                                if (!ipv6_chk_addr(&init_net, &addr->sin6_addr,
+                                if (!ipv6_chk_addr(net, &addr->sin6_addr,
                                                    dev, 0)) {
                                         if (dev)
                                                 dev_put(dev);
@@ -440,6 +441,7 @@ EXPORT_SYMBOL(inet6_getname);
 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)
         {
@@ -452,14 +454,14 @@ int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
         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;
@@ -678,6 +680,129 @@ int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb)
 
 EXPORT_SYMBOL_GPL(ipv6_opt_accepted);
 
+static struct inet6_protocol *ipv6_gso_pull_exthdrs(struct sk_buff *skb,
+                                                    int proto)
+{
+        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 ops;
+}
+
+static int ipv6_gso_send_check(struct sk_buff *skb)
+{
+        struct ipv6hdr *ipv6h;
+        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 = 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;
+        struct inet6_protocol *ops;
+
+        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);
+
+        rcu_read_lock();
+        ops = ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr);
+        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));
+        }
+
+out:
+        return segs;
+}
+
+static struct packet_type ipv6_packet_type = {
+        .type = __constant_htons(ETH_P_IPV6),
+        .func = ipv6_rcv,
+        .gso_send_check = ipv6_gso_send_check,
+        .gso_segment = ipv6_gso_segment,
+};
+
+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 __init init_ipv6_mibs(void)
 {
         if (snmp_mib_init((void **)ipv6_statistics,
@@ -720,6 +845,8 @@ static void cleanup_ipv6_mibs(void)
 
 static int inet6_net_init(struct net *net)
 {
+        int err = 0;
+
         net->ipv6.sysctl.bindv6only = 0;
         net->ipv6.sysctl.flush_delay = 0;
         net->ipv6.sysctl.ip6_rt_max_size = 4096;
@@ -731,12 +858,36 @@ static int inet6_net_init(struct net *net)
         net->ipv6.sysctl.ip6_rt_min_advmss = IPV6_MIN_MTU - 20 - 40;
         net->ipv6.sysctl.icmpv6_time = 1*HZ;
 
-        return 0;
+#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;
+out:
+#endif
+        return err;
+
+#ifdef CONFIG_PROC_FS
+proc_ac6_fail:
+        tcp6_proc_exit(net);
+proc_tcp6_fail:
+        udp6_proc_exit(net);
+        goto out;
+#endif
 }
 
 static void inet6_net_exit(struct net *net)
 {
-        return;
+#ifdef CONFIG_PROC_FS
+        udp6_proc_exit(net);
+        tcp6_proc_exit(net);
+        ac6_proc_exit(net);
+#endif
 }
 
 static struct pernet_operations inet6_net_ops = {
@@ -802,19 +953,16 @@ static int __init inet6_init(void)
         err = register_pernet_subsys(&inet6_net_ops);
         if (err)
                 goto register_pernet_fail;
-
-#ifdef CONFIG_SYSCTL
-        err = ipv6_sysctl_register();
-        if (err)
-                goto sysctl_fail;
-#endif
-        err = icmpv6_init(&inet6_family_ops);
+        err = icmpv6_init();
         if (err)
                 goto icmp_fail;
-        err = ndisc_init(&inet6_family_ops);
+#ifdef CONFIG_IPV6_MROUTE
+        ip6_mr_init();
+#endif
+        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();
@@ -825,17 +973,10 @@ static int __init inet6_init(void)
         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
@@ -874,9 +1015,19 @@ static int __init inet6_init(void)
         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:
@@ -897,16 +1048,10 @@ 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
@@ -918,10 +1063,6 @@ igmp_fail:
 ndisc_fail:
         icmpv6_cleanup();
 icmp_fail:
-#ifdef CONFIG_SYSCTL
-        ipv6_sysctl_unregister();
-sysctl_fail:
-#endif
         unregister_pernet_subsys(&inet6_net_ops);
 register_pernet_fail:
         cleanup_ipv6_mibs();
@@ -949,6 +1090,9 @@ static void __exit inet6_exit(void)
         /* Disallow any further netlink messages */
         rtnl_unregister_all(PF_INET6);
 
+#ifdef CONFIG_SYSCTL
+        ipv6_sysctl_unregister();
+#endif
         udpv6_exit();
         udplitev6_exit();
         tcpv6_exit();
@@ -964,11 +1108,8 @@ static void __exit inet6_exit(void)
 
         /* 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();
@@ -976,9 +1117,7 @@ static void __exit inet6_exit(void)
         ndisc_cleanup();
         icmpv6_cleanup();
         rawv6_exit();
-#ifdef CONFIG_SYSCTL
-        ipv6_sysctl_unregister();
-#endif
+
         unregister_pernet_subsys(&inet6_net_ops);
         cleanup_ipv6_mibs();
         proto_unregister(&rawv6_prot);