1 files changed, 71 insertions, 92 deletions

diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index b043c60429b..7cb4392690d 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -49,13 +49,14 @@
 #include <net/udp.h>
 #include <net/udplite.h>
 #include <net/tcp.h>
-#include <net/ipip.h>
+#include <net/ping.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 <net/ndisc.h>
 #ifdef CONFIG_IPV6_TUNNEL
 #include <net/ip6_tunnel.h>
 #endif
@@ -105,15 +106,9 @@ static int inet6_create(struct net *net, struct socket *sock, int protocol,
 	struct inet_protosw *answer;
 	struct proto *answer_prot;
 	unsigned char answer_flags;
-	char answer_no_check;
 	int try_loading_module = 0;
 	int err;
 
-	if (sock->type != SOCK_RAW &&
-	    sock->type != SOCK_DGRAM &&
-	    !inet_ehash_secret)
-		build_ehash_secret();
-
 	/* Look for the requested type/protocol pair. */
 lookup_protocol:
 	err = -ESOCKTNOSUPPORT;
@@ -166,7 +161,6 @@ lookup_protocol:
 
 	sock->ops = answer->ops;
 	answer_prot = answer->prot;
-	answer_no_check = answer->no_check;
 	answer_flags = answer->flags;
 	rcu_read_unlock();
 
@@ -180,7 +174,6 @@ lookup_protocol:
 	sock_init_data(sock, sk);
 
 	err = 0;
-	sk->sk_no_check = answer_no_check;
 	if (INET_PROTOSW_REUSE & answer_flags)
 		sk->sk_reuse = SK_CAN_REUSE;
 
@@ -217,7 +210,7 @@ lookup_protocol:
 	inet->mc_list	= NULL;
 	inet->rcv_tos	= 0;
 
-	if (ipv4_config.no_pmtu_disc)
+	if (net->ipv4.sysctl_ip_no_pmtu_disc)
 		inet->pmtudisc = IP_PMTUDISC_DONT;
 	else
 		inet->pmtudisc = IP_PMTUDISC_WANT;
@@ -323,7 +316,7 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
 			struct net_device *dev = NULL;
 
 			rcu_read_lock();
-			if (addr_type & IPV6_ADDR_LINKLOCAL) {
+			if (__ipv6_addr_needs_scope_id(addr_type)) {
 				if (addr_len >= sizeof(struct sockaddr_in6) &&
 				    addr->sin6_scope_id) {
 					/* Override any existing binding, if another one
@@ -363,7 +356,7 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
 	inet->inet_rcv_saddr = v4addr;
 	inet->inet_saddr = v4addr;
 
-	np->rcv_saddr = addr->sin6_addr;
+	sk->sk_v6_rcv_saddr = addr->sin6_addr;
 
 	if (!(addr_type & IPV6_ADDR_MULTICAST))
 		np->saddr = addr->sin6_addr;
@@ -460,19 +453,19 @@ int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
 		    peer == 1)
 			return -ENOTCONN;
 		sin->sin6_port = inet->inet_dport;
-		sin->sin6_addr = np->daddr;
+		sin->sin6_addr = sk->sk_v6_daddr;
 		if (np->sndflow)
 			sin->sin6_flowinfo = np->flow_label;
 	} else {
-		if (ipv6_addr_any(&np->rcv_saddr))
+		if (ipv6_addr_any(&sk->sk_v6_rcv_saddr))
 			sin->sin6_addr = np->saddr;
 		else
-			sin->sin6_addr = np->rcv_saddr;
+			sin->sin6_addr = sk->sk_v6_rcv_saddr;
 
 		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;
+	sin->sin6_scope_id = ipv6_iface_scope_id(&sin->sin6_addr,
+						 sk->sk_bound_dev_if);
 	*uaddr_len = sizeof(*sin);
 	return 0;
 }
@@ -654,7 +647,7 @@ int inet6_sk_rebuild_header(struct sock *sk)
 
 		memset(&fl6, 0, sizeof(fl6));
 		fl6.flowi6_proto = sk->sk_protocol;
-		fl6.daddr = np->daddr;
+		fl6.daddr = sk->sk_v6_daddr;
 		fl6.saddr = np->saddr;
 		fl6.flowlabel = np->flow_label;
 		fl6.flowi6_oif = sk->sk_bound_dev_if;
@@ -665,7 +658,7 @@ int inet6_sk_rebuild_header(struct sock *sk)
 
 		final_p = fl6_update_dst(&fl6, np->opt, &final);
 
-		dst = ip6_dst_lookup_flow(sk, &fl6, final_p, false);
+		dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
 		if (IS_ERR(dst)) {
 			sk->sk_route_caps = 0;
 			sk->sk_err_soft = -PTR_ERR(dst);
@@ -687,8 +680,7 @@ bool ipv6_opt_accepted(const struct sock *sk, const struct sk_buff *skb)
 	if (np->rxopt.all) {
 		if ((opt->hop && (np->rxopt.bits.hopopts ||
 				  np->rxopt.bits.ohopopts)) ||
-		    ((IPV6_FLOWINFO_MASK &
-		      *(__be32 *)skb_network_header(skb)) &&
+		    (ip6_flowinfo((struct ipv6hdr *) skb_network_header(skb)) &&
 		     np->rxopt.bits.rxflow) ||
 		    (opt->srcrt && (np->rxopt.bits.srcrt ||
 		     np->rxopt.bits.osrcrt)) ||
@@ -718,21 +710,27 @@ static void ipv6_packet_cleanup(void)
 
 static int __net_init ipv6_init_mibs(struct net *net)
 {
-	if (snmp_mib_init((void __percpu **)net->mib.udp_stats_in6,
-			  sizeof(struct udp_mib),
-			  __alignof__(struct udp_mib)) < 0)
+	int i;
+
+	net->mib.udp_stats_in6 = alloc_percpu(struct udp_mib);
+	if (!net->mib.udp_stats_in6)
 		return -ENOMEM;
-	if (snmp_mib_init((void __percpu **)net->mib.udplite_stats_in6,
-			  sizeof(struct udp_mib),
-			  __alignof__(struct udp_mib)) < 0)
+	net->mib.udplite_stats_in6 = alloc_percpu(struct udp_mib);
+	if (!net->mib.udplite_stats_in6)
 		goto err_udplite_mib;
-	if (snmp_mib_init((void __percpu **)net->mib.ipv6_statistics,
-			  sizeof(struct ipstats_mib),
-			  __alignof__(struct ipstats_mib)) < 0)
+	net->mib.ipv6_statistics = alloc_percpu(struct ipstats_mib);
+	if (!net->mib.ipv6_statistics)
 		goto err_ip_mib;
-	if (snmp_mib_init((void __percpu **)net->mib.icmpv6_statistics,
-			  sizeof(struct icmpv6_mib),
-			  __alignof__(struct icmpv6_mib)) < 0)
+
+	for_each_possible_cpu(i) {
+		struct ipstats_mib *af_inet6_stats;
+		af_inet6_stats = per_cpu_ptr(net->mib.ipv6_statistics, i);
+		u64_stats_init(&af_inet6_stats->syncp);
+	}
+
+
+	net->mib.icmpv6_statistics = alloc_percpu(struct icmpv6_mib);
+	if (!net->mib.icmpv6_statistics)
 		goto err_icmp_mib;
 	net->mib.icmpv6msg_statistics = kzalloc(sizeof(struct icmpv6msg_mib),
 						GFP_KERNEL);
@@ -741,22 +739,22 @@ static int __net_init ipv6_init_mibs(struct net *net)
 	return 0;
 
 err_icmpmsg_mib:
-	snmp_mib_free((void __percpu **)net->mib.icmpv6_statistics);
+	free_percpu(net->mib.icmpv6_statistics);
 err_icmp_mib:
-	snmp_mib_free((void __percpu **)net->mib.ipv6_statistics);
+	free_percpu(net->mib.ipv6_statistics);
 err_ip_mib:
-	snmp_mib_free((void __percpu **)net->mib.udplite_stats_in6);
+	free_percpu(net->mib.udplite_stats_in6);
 err_udplite_mib:
-	snmp_mib_free((void __percpu **)net->mib.udp_stats_in6);
+	free_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);
+	free_percpu(net->mib.udp_stats_in6);
+	free_percpu(net->mib.udplite_stats_in6);
+	free_percpu(net->mib.ipv6_statistics);
+	free_percpu(net->mib.icmpv6_statistics);
 	kfree(net->mib.icmpv6msg_statistics);
 }
 
@@ -766,6 +764,8 @@ static int __net_init inet6_net_init(struct net *net)
 
 	net->ipv6.sysctl.bindv6only = 0;
 	net->ipv6.sysctl.icmpv6_time = 1*HZ;
+	net->ipv6.sysctl.flowlabel_consistency = 1;
+	atomic_set(&net->ipv6.rt_genid, 0);
 
 	err = ipv6_init_mibs(net);
 	if (err)
@@ -809,13 +809,21 @@ static struct pernet_operations inet6_net_ops = {
 	.exit = inet6_net_exit,
 };
 
+static const struct ipv6_stub ipv6_stub_impl = {
+	.ipv6_sock_mc_join = ipv6_sock_mc_join,
+	.ipv6_sock_mc_drop = ipv6_sock_mc_drop,
+	.ipv6_dst_lookup = ip6_dst_lookup,
+	.udpv6_encap_enable = udpv6_encap_enable,
+	.ndisc_send_na = ndisc_send_na,
+	.nd_tbl	= &nd_tbl,
+};
+
 static int __init inet6_init(void)
 {
-	struct sk_buff *dummy_skb;
 	struct list_head *r;
 	int err = 0;
 
-	BUILD_BUG_ON(sizeof(struct inet6_skb_parm) > sizeof(dummy_skb->cb));
+	BUILD_BUG_ON(sizeof(struct inet6_skb_parm) > FIELD_SIZEOF(struct sk_buff, cb));
 
 	/* Register the socket-side information for inet6_create.  */
 	for (r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r)
@@ -842,6 +850,9 @@ static int __init inet6_init(void)
 	if (err)
 		goto out_unregister_udplite_proto;
 
+	err = proto_register(&pingv6_prot, 1);
+	if (err)
+		goto out_unregister_ping_proto;
 
 	/* We MUST register RAW sockets before we create the ICMP6,
 	 * IGMP6, or NDISC control sockets.
@@ -857,8 +868,6 @@ static int __init inet6_init(void)
 	if (err)
 		goto out_sock_register_fail;
 
-	tcpv6_prot.sysctl_mem = init_net.ipv4.sysctl_tcp_mem;
-
 	/*
 	 *	ipngwg API draft makes clear that the correct semantics
 	 *	for TCP and UDP is to consider one TCP and UDP instance
@@ -881,6 +890,9 @@ static int __init inet6_init(void)
 	err = igmp6_init();
 	if (err)
 		goto igmp_fail;
+
+	ipv6_stub = &ipv6_stub_impl;
+
 	err = ipv6_netfilter_init();
 	if (err)
 		goto netfilter_fail;
@@ -899,6 +911,9 @@ static int __init inet6_init(void)
 	err = ip6_route_init();
 	if (err)
 		goto ip6_route_fail;
+	err = ndisc_late_init();
+	if (err)
+		goto ndisc_late_fail;
 	err = ip6_flowlabel_init();
 	if (err)
 		goto ip6_flowlabel_fail;
@@ -932,6 +947,10 @@ static int __init inet6_init(void)
 	if (err)
 		goto ipv6_packet_fail;
 
+	err = pingv6_init();
+	if (err)
+		goto pingv6_fail;
+
 #ifdef CONFIG_SYSCTL
 	err = ipv6_sysctl_register();
 	if (err)
@@ -942,8 +961,10 @@ out:
 
 #ifdef CONFIG_SYSCTL
 sysctl_fail:
-	ipv6_packet_cleanup();
+	pingv6_exit();
 #endif
+pingv6_fail:
+	ipv6_packet_cleanup();
 ipv6_packet_fail:
 	tcpv6_exit();
 tcpv6_fail:
@@ -959,6 +980,8 @@ ipv6_exthdrs_fail:
 addrconf_fail:
 	ip6_flowlabel_cleanup();
 ip6_flowlabel_fail:
+	ndisc_late_cleanup();
+ndisc_late_fail:
 	ip6_route_cleanup();
 ip6_route_fail:
 #ifdef CONFIG_PROC_FS
@@ -987,6 +1010,8 @@ register_pernet_fail:
 	rtnl_unregister_all(PF_INET6);
 out_sock_register_fail:
 	rawv6_exit();
+out_unregister_ping_proto:
+	proto_unregister(&pingv6_prot);
 out_unregister_raw_proto:
 	proto_unregister(&rawv6_prot);
 out_unregister_udplite_proto:
@@ -999,50 +1024,4 @@ out_unregister_tcp_proto:
 }
 module_init(inet6_init);
 
-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);
-
-	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();
-#ifdef CONFIG_PROC_FS
-
-	/* Cleanup code parts. */
-	if6_proc_exit();
-	ipv6_misc_proc_exit();
-	udplite6_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);
-	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);
-
 MODULE_ALIAS_NETPROTO(PF_INET6);