X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=net%2Fipv6%2Faf_inet6.c;h=3c6aafb02183deaf7a0e52cd934687a736e34171;hb=3de2403e6659d71b36ec820dc9b942762ddfe6eb;hp=bddac0e8780f948f75b8de3d4fdb25e280080a2b;hpb=bd45ac0c5daae35e7c71138172e63df5cf644cf6;p=~andy%2Flinux diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c index bddac0e8780..3c6aafb0218 100644 --- a/net/ipv6/af_inet6.c +++ b/net/ipv6/af_inet6.c @@ -61,6 +61,9 @@ #include #include +#ifdef CONFIG_IPV6_MROUTE +#include +#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 = { @@ -752,14 +903,6 @@ static int __init inet6_init(void) 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; - - __this_module.can_unload = &ipv6_unload; -#endif -#endif err = proto_register(&tcpv6_prot, 1); if (err) goto out; @@ -810,19 +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(); @@ -833,17 +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 @@ -882,9 +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: @@ -905,16 +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 @@ -926,10 +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(); @@ -957,6 +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(); @@ -972,11 +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(); @@ -984,9 +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);