1 files changed, 364 insertions, 373 deletions

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 27aed1afcf81..47f837a58e0a 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -359,7 +359,6 @@ static struct inet6_dev *ipv6_add_dev(struct net_device *dev)
 		ndev->addr_gen_mode = IN6_ADDR_GEN_MODE_EUI64;
 
 	ndev->cnf.mtu6 = dev->mtu;
-	ndev->cnf.sysctl = NULL;
 	ndev->nd_parms = neigh_parms_alloc(dev, &nd_tbl);
 	if (!ndev->nd_parms) {
 		kfree(ndev);
@@ -3176,35 +3175,9 @@ static void addrconf_gre_config(struct net_device *dev)
 }
 #endif
 
-#if IS_ENABLED(CONFIG_NET_L3_MASTER_DEV)
-/* If the host route is cached on the addr struct make sure it is associated
- * with the proper table. e.g., enslavement can change and if so the cached
- * host route needs to move to the new table.
- */
-static void l3mdev_check_host_rt(struct inet6_dev *idev,
-				  struct inet6_ifaddr *ifp)
-{
-	if (ifp->rt) {
-		u32 tb_id = l3mdev_fib_table(idev->dev) ? : RT6_TABLE_LOCAL;
-
-		if (tb_id != ifp->rt->rt6i_table->tb6_id) {
-			ip6_del_rt(ifp->rt);
-			ifp->rt = NULL;
-		}
-	}
-}
-#else
-static void l3mdev_check_host_rt(struct inet6_dev *idev,
-				  struct inet6_ifaddr *ifp)
-{
-}
-#endif
-
 static int fixup_permanent_addr(struct inet6_dev *idev,
 				struct inet6_ifaddr *ifp)
 {
-	l3mdev_check_host_rt(idev, ifp);
-
 	if (!ifp->rt) {
 		struct rt6_info *rt;
 
@@ -3255,6 +3228,7 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
 			   void *ptr)
 {
 	struct net_device *dev = netdev_notifier_info_to_dev(ptr);
+	struct netdev_notifier_changeupper_info *info;
 	struct inet6_dev *idev = __in6_dev_get(dev);
 	int run_pending = 0;
 	int err;
@@ -3303,6 +3277,9 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
 			break;
 
 		if (event == NETDEV_UP) {
+			/* restore routes for permanent addresses */
+			addrconf_permanent_addr(dev);
+
 			if (!addrconf_qdisc_ok(dev)) {
 				/* device is not ready yet. */
 				pr_info("ADDRCONF(NETDEV_UP): %s: link is not ready\n",
@@ -3336,9 +3313,6 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
 			run_pending = 1;
 		}
 
-		/* restore routes for permanent addresses */
-		addrconf_permanent_addr(dev);
-
 		switch (dev->type) {
 #if IS_ENABLED(CONFIG_IPV6_SIT)
 		case ARPHRD_SIT:
@@ -3413,6 +3387,15 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
 		if (idev)
 			addrconf_type_change(dev, event);
 		break;
+
+	case NETDEV_CHANGEUPPER:
+		info = ptr;
+
+		/* flush all routes if dev is linked to or unlinked from
+		 * an L3 master device (e.g., VRF)
+		 */
+		if (info->upper_dev && netif_is_l3_master(info->upper_dev))
+			addrconf_ifdown(dev, 0);
 	}
 
 	return NOTIFY_OK;
@@ -3438,6 +3421,12 @@ static void addrconf_type_change(struct net_device *dev, unsigned long event)
 		ipv6_mc_unmap(idev);
 }
 
+static bool addr_is_local(const struct in6_addr *addr)
+{
+	return ipv6_addr_type(addr) &
+		(IPV6_ADDR_LINKLOCAL | IPV6_ADDR_LOOPBACK);
+}
+
 static int addrconf_ifdown(struct net_device *dev, int how)
 {
 	struct net *net = dev_net(dev);
@@ -3495,7 +3484,8 @@ restart:
 				 * address is retained on a down event
 				 */
 				if (!keep_addr ||
-				    !(ifa->flags & IFA_F_PERMANENT)) {
+				    !(ifa->flags & IFA_F_PERMANENT) ||
+				    addr_is_local(&ifa->addr)) {
 					hlist_del_init_rcu(&ifa->addr_lst);
 					goto restart;
 				}
@@ -3539,17 +3529,23 @@ restart:
 
 	INIT_LIST_HEAD(&del_list);
 	list_for_each_entry_safe(ifa, tmp, &idev->addr_list, if_list) {
+		struct rt6_info *rt = NULL;
+
 		addrconf_del_dad_work(ifa);
 
 		write_unlock_bh(&idev->lock);
 		spin_lock_bh(&ifa->lock);
 
-		if (keep_addr && (ifa->flags & IFA_F_PERMANENT)) {
+		if (keep_addr && (ifa->flags & IFA_F_PERMANENT) &&
+		    !addr_is_local(&ifa->addr)) {
 			/* set state to skip the notifier below */
 			state = INET6_IFADDR_STATE_DEAD;
 			ifa->state = 0;
 			if (!(ifa->flags & IFA_F_NODAD))
 				ifa->flags |= IFA_F_TENTATIVE;
+
+			rt = ifa->rt;
+			ifa->rt = NULL;
 		} else {
 			state = ifa->state;
 			ifa->state = INET6_IFADDR_STATE_DEAD;
@@ -3560,6 +3556,9 @@ restart:
 
 		spin_unlock_bh(&ifa->lock);
 
+		if (rt)
+			ip6_del_rt(rt);
+
 		if (state != INET6_IFADDR_STATE_DEAD) {
 			__ipv6_ifa_notify(RTM_DELADDR, ifa);
 			inet6addr_notifier_call_chain(NETDEV_DOWN, ifa);
@@ -4995,15 +4994,13 @@ static int inet6_set_iftoken(struct inet6_dev *idev, struct in6_addr *token)
 {
 	struct inet6_ifaddr *ifp;
 	struct net_device *dev = idev->dev;
-	bool update_rs = false;
+	bool clear_token, update_rs = false;
 	struct in6_addr ll_addr;
 
 	ASSERT_RTNL();
 
 	if (!token)
 		return -EINVAL;
-	if (ipv6_addr_any(token))
-		return -EINVAL;
 	if (dev->flags & (IFF_LOOPBACK | IFF_NOARP))
 		return -EINVAL;
 	if (!ipv6_accept_ra(idev))
@@ -5018,10 +5015,13 @@ static int inet6_set_iftoken(struct inet6_dev *idev, struct in6_addr *token)
 
 	write_unlock_bh(&idev->lock);
 
+	clear_token = ipv6_addr_any(token);
+	if (clear_token)
+		goto update_lft;
+
 	if (!idev->dead && (idev->if_flags & IF_READY) &&
 	    !ipv6_get_lladdr(dev, &ll_addr, IFA_F_TENTATIVE |
 			     IFA_F_OPTIMISTIC)) {
-
 		/* If we're not ready, then normal ifup will take care
 		 * of this. Otherwise, we need to request our rs here.
 		 */
@@ -5029,6 +5029,7 @@ static int inet6_set_iftoken(struct inet6_dev *idev, struct in6_addr *token)
 		update_rs = true;
 	}
 
+update_lft:
 	write_lock_bh(&idev->lock);
 
 	if (update_rs) {
@@ -5325,10 +5326,10 @@ static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
 			if (rt)
 				ip6_del_rt(rt);
 		}
-		dst_hold(&ifp->rt->dst);
-
-		ip6_del_rt(ifp->rt);
-
+		if (ifp->rt) {
+			dst_hold(&ifp->rt->dst);
+			ip6_del_rt(ifp->rt);
+		}
 		rt_genid_bump_ipv6(net);
 		break;
 	}
@@ -5618,376 +5619,366 @@ int addrconf_sysctl_ignore_routes_with_linkdown(struct ctl_table *ctl,
 	return ret;
 }
 
-static struct addrconf_sysctl_table
-{
-	struct ctl_table_header *sysctl_header;
-	struct ctl_table addrconf_vars[DEVCONF_MAX+1];
-} addrconf_sysctl __read_mostly = {
-	.sysctl_header = NULL,
-	.addrconf_vars = {
-		{
-			.procname	= "forwarding",
-			.data		= &ipv6_devconf.forwarding,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= addrconf_sysctl_forward,
-		},
-		{
-			.procname	= "hop_limit",
-			.data		= &ipv6_devconf.hop_limit,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= addrconf_sysctl_hop_limit,
-		},
-		{
-			.procname	= "mtu",
-			.data		= &ipv6_devconf.mtu6,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= addrconf_sysctl_mtu,
-		},
-		{
-			.procname	= "accept_ra",
-			.data		= &ipv6_devconf.accept_ra,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec,
-		},
-		{
-			.procname	= "accept_redirects",
-			.data		= &ipv6_devconf.accept_redirects,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec,
-		},
-		{
-			.procname	= "autoconf",
-			.data		= &ipv6_devconf.autoconf,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec,
-		},
-		{
-			.procname	= "dad_transmits",
-			.data		= &ipv6_devconf.dad_transmits,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec,
-		},
-		{
-			.procname	= "router_solicitations",
-			.data		= &ipv6_devconf.rtr_solicits,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec,
-		},
-		{
-			.procname	= "router_solicitation_interval",
-			.data		= &ipv6_devconf.rtr_solicit_interval,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec_jiffies,
-		},
-		{
-			.procname	= "router_solicitation_delay",
-			.data		= &ipv6_devconf.rtr_solicit_delay,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec_jiffies,
-		},
-		{
-			.procname	= "force_mld_version",
-			.data		= &ipv6_devconf.force_mld_version,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec,
-		},
-		{
-			.procname	= "mldv1_unsolicited_report_interval",
-			.data		=
-				&ipv6_devconf.mldv1_unsolicited_report_interval,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec_ms_jiffies,
-		},
-		{
-			.procname	= "mldv2_unsolicited_report_interval",
-			.data		=
-				&ipv6_devconf.mldv2_unsolicited_report_interval,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec_ms_jiffies,
-		},
-		{
-			.procname	= "use_tempaddr",
-			.data		= &ipv6_devconf.use_tempaddr,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec,
-		},
-		{
-			.procname	= "temp_valid_lft",
-			.data		= &ipv6_devconf.temp_valid_lft,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec,
-		},
-		{
-			.procname	= "temp_prefered_lft",
-			.data		= &ipv6_devconf.temp_prefered_lft,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec,
-		},
-		{
-			.procname	= "regen_max_retry",
-			.data		= &ipv6_devconf.regen_max_retry,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec,
-		},
-		{
-			.procname	= "max_desync_factor",
-			.data		= &ipv6_devconf.max_desync_factor,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec,
-		},
-		{
-			.procname	= "max_addresses",
-			.data		= &ipv6_devconf.max_addresses,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec,
-		},
-		{
-			.procname	= "accept_ra_defrtr",
-			.data		= &ipv6_devconf.accept_ra_defrtr,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec,
-		},
-		{
-			.procname	= "accept_ra_min_hop_limit",
-			.data		= &ipv6_devconf.accept_ra_min_hop_limit,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec,
-		},
-		{
-			.procname	= "accept_ra_pinfo",
-			.data		= &ipv6_devconf.accept_ra_pinfo,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec,
-		},
+static const struct ctl_table addrconf_sysctl[] = {
+	{
+		.procname	= "forwarding",
+		.data		= &ipv6_devconf.forwarding,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= addrconf_sysctl_forward,
+	},
+	{
+		.procname	= "hop_limit",
+		.data		= &ipv6_devconf.hop_limit,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= addrconf_sysctl_hop_limit,
+	},
+	{
+		.procname	= "mtu",
+		.data		= &ipv6_devconf.mtu6,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= addrconf_sysctl_mtu,
+	},
+	{
+		.procname	= "accept_ra",
+		.data		= &ipv6_devconf.accept_ra,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
+	{
+		.procname	= "accept_redirects",
+		.data		= &ipv6_devconf.accept_redirects,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
+	{
+		.procname	= "autoconf",
+		.data		= &ipv6_devconf.autoconf,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
+	{
+		.procname	= "dad_transmits",
+		.data		= &ipv6_devconf.dad_transmits,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
+	{
+		.procname	= "router_solicitations",
+		.data		= &ipv6_devconf.rtr_solicits,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
+	{
+		.procname	= "router_solicitation_interval",
+		.data		= &ipv6_devconf.rtr_solicit_interval,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec_jiffies,
+	},
+	{
+		.procname	= "router_solicitation_delay",
+		.data		= &ipv6_devconf.rtr_solicit_delay,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec_jiffies,
+	},
+	{
+		.procname	= "force_mld_version",
+		.data		= &ipv6_devconf.force_mld_version,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
+	{
+		.procname	= "mldv1_unsolicited_report_interval",
+		.data		=
+			&ipv6_devconf.mldv1_unsolicited_report_interval,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec_ms_jiffies,
+	},
+	{
+		.procname	= "mldv2_unsolicited_report_interval",
+		.data		=
+			&ipv6_devconf.mldv2_unsolicited_report_interval,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec_ms_jiffies,
+	},
+	{
+		.procname	= "use_tempaddr",
+		.data		= &ipv6_devconf.use_tempaddr,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
+	{
+		.procname	= "temp_valid_lft",
+		.data		= &ipv6_devconf.temp_valid_lft,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
+	{
+		.procname	= "temp_prefered_lft",
+		.data		= &ipv6_devconf.temp_prefered_lft,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
+	{
+		.procname	= "regen_max_retry",
+		.data		= &ipv6_devconf.regen_max_retry,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
+	{
+		.procname	= "max_desync_factor",
+		.data		= &ipv6_devconf.max_desync_factor,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
+	{
+		.procname	= "max_addresses",
+		.data		= &ipv6_devconf.max_addresses,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
+	{
+		.procname	= "accept_ra_defrtr",
+		.data		= &ipv6_devconf.accept_ra_defrtr,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
+	{
+		.procname	= "accept_ra_min_hop_limit",
+		.data		= &ipv6_devconf.accept_ra_min_hop_limit,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
+	{
+		.procname	= "accept_ra_pinfo",
+		.data		= &ipv6_devconf.accept_ra_pinfo,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
 #ifdef CONFIG_IPV6_ROUTER_PREF
-		{
-			.procname	= "accept_ra_rtr_pref",
-			.data		= &ipv6_devconf.accept_ra_rtr_pref,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec,
-		},
-		{
-			.procname	= "router_probe_interval",
-			.data		= &ipv6_devconf.rtr_probe_interval,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec_jiffies,
-		},
+	{
+		.procname	= "accept_ra_rtr_pref",
+		.data		= &ipv6_devconf.accept_ra_rtr_pref,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
+	{
+		.procname	= "router_probe_interval",
+		.data		= &ipv6_devconf.rtr_probe_interval,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec_jiffies,
+	},
 #ifdef CONFIG_IPV6_ROUTE_INFO
-		{
-			.procname	= "accept_ra_rt_info_max_plen",
-			.data		= &ipv6_devconf.accept_ra_rt_info_max_plen,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec,
-		},
+	{
+		.procname	= "accept_ra_rt_info_max_plen",
+		.data		= &ipv6_devconf.accept_ra_rt_info_max_plen,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
 #endif
 #endif
-		{
-			.procname	= "proxy_ndp",
-			.data		= &ipv6_devconf.proxy_ndp,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= addrconf_sysctl_proxy_ndp,
-		},
-		{
-			.procname	= "accept_source_route",
-			.data		= &ipv6_devconf.accept_source_route,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec,
-		},
+	{
+		.procname	= "proxy_ndp",
+		.data		= &ipv6_devconf.proxy_ndp,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= addrconf_sysctl_proxy_ndp,
+	},
+	{
+		.procname	= "accept_source_route",
+		.data		= &ipv6_devconf.accept_source_route,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
 #ifdef CONFIG_IPV6_OPTIMISTIC_DAD
-		{
-			.procname       = "optimistic_dad",
-			.data           = &ipv6_devconf.optimistic_dad,
-			.maxlen         = sizeof(int),
-			.mode           = 0644,
-			.proc_handler   = proc_dointvec,
-
-		},
-		{
-			.procname       = "use_optimistic",
-			.data           = &ipv6_devconf.use_optimistic,
-			.maxlen         = sizeof(int),
-			.mode           = 0644,
-			.proc_handler   = proc_dointvec,
-
-		},
+	{
+		.procname	= "optimistic_dad",
+		.data		= &ipv6_devconf.optimistic_dad,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler   = proc_dointvec,
+	},
+	{
+		.procname	= "use_optimistic",
+		.data		= &ipv6_devconf.use_optimistic,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
 #endif
 #ifdef CONFIG_IPV6_MROUTE
-		{
-			.procname	= "mc_forwarding",
-			.data		= &ipv6_devconf.mc_forwarding,
-			.maxlen		= sizeof(int),
-			.mode		= 0444,
-			.proc_handler	= proc_dointvec,
-		},
+	{
+		.procname	= "mc_forwarding",
+		.data		= &ipv6_devconf.mc_forwarding,
+		.maxlen		= sizeof(int),
+		.mode		= 0444,
+		.proc_handler	= proc_dointvec,
+	},
 #endif
-		{
-			.procname	= "disable_ipv6",
-			.data		= &ipv6_devconf.disable_ipv6,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= addrconf_sysctl_disable,
-		},
-		{
-			.procname	= "accept_dad",
-			.data		= &ipv6_devconf.accept_dad,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec,
-		},
-		{
-			.procname       = "force_tllao",
-			.data           = &ipv6_devconf.force_tllao,
-			.maxlen         = sizeof(int),
-			.mode           = 0644,
-			.proc_handler   = proc_dointvec
-		},
-		{
-			.procname       = "ndisc_notify",
-			.data           = &ipv6_devconf.ndisc_notify,
-			.maxlen         = sizeof(int),
-			.mode           = 0644,
-			.proc_handler   = proc_dointvec
-		},
-		{
-			.procname	= "suppress_frag_ndisc",
-			.data		= &ipv6_devconf.suppress_frag_ndisc,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec
-		},
-		{
-			.procname	= "accept_ra_from_local",
-			.data		= &ipv6_devconf.accept_ra_from_local,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec,
-		},
-		{
-			.procname	= "accept_ra_mtu",
-			.data		= &ipv6_devconf.accept_ra_mtu,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec,
-		},
-		{
-			.procname	= "stable_secret",
-			.data		= &ipv6_devconf.stable_secret,
-			.maxlen		= IPV6_MAX_STRLEN,
-			.mode		= 0600,
-			.proc_handler	= addrconf_sysctl_stable_secret,
-		},
-		{
-			.procname       = "use_oif_addrs_only",
-			.data           = &ipv6_devconf.use_oif_addrs_only,
-			.maxlen         = sizeof(int),
-			.mode           = 0644,
-			.proc_handler   = proc_dointvec,
-		},
-		{
-			.procname	= "ignore_routes_with_linkdown",
-			.data		= &ipv6_devconf.ignore_routes_with_linkdown,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= addrconf_sysctl_ignore_routes_with_linkdown,
-		},
-		{
-			.procname	= "drop_unicast_in_l2_multicast",
-			.data		= &ipv6_devconf.drop_unicast_in_l2_multicast,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec,
-		},
-		{
-			.procname	= "drop_unsolicited_na",
-			.data		= &ipv6_devconf.drop_unsolicited_na,
-			.maxlen		= sizeof(int),
-			.mode		= 0644,
-			.proc_handler	= proc_dointvec,
-		},
-		{
-			.procname       = "keep_addr_on_down",
-			.data           = &ipv6_devconf.keep_addr_on_down,
-			.maxlen         = sizeof(int),
-			.mode           = 0644,
-			.proc_handler   = proc_dointvec,
-
-		},
-		{
-			/* sentinel */
-		}
+	{
+		.procname	= "disable_ipv6",
+		.data		= &ipv6_devconf.disable_ipv6,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= addrconf_sysctl_disable,
+	},
+	{
+		.procname	= "accept_dad",
+		.data		= &ipv6_devconf.accept_dad,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
+	{
+		.procname	= "force_tllao",
+		.data		= &ipv6_devconf.force_tllao,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec
+	},
+	{
+		.procname	= "ndisc_notify",
+		.data		= &ipv6_devconf.ndisc_notify,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec
+	},
+	{
+		.procname	= "suppress_frag_ndisc",
+		.data		= &ipv6_devconf.suppress_frag_ndisc,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec
+	},
+	{
+		.procname	= "accept_ra_from_local",
+		.data		= &ipv6_devconf.accept_ra_from_local,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
+	{
+		.procname	= "accept_ra_mtu",
+		.data		= &ipv6_devconf.accept_ra_mtu,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
 	},
+	{
+		.procname	= "stable_secret",
+		.data		= &ipv6_devconf.stable_secret,
+		.maxlen		= IPV6_MAX_STRLEN,
+		.mode		= 0600,
+		.proc_handler	= addrconf_sysctl_stable_secret,
+	},
+	{
+		.procname	= "use_oif_addrs_only",
+		.data		= &ipv6_devconf.use_oif_addrs_only,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
+	{
+		.procname	= "ignore_routes_with_linkdown",
+		.data		= &ipv6_devconf.ignore_routes_with_linkdown,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= addrconf_sysctl_ignore_routes_with_linkdown,
+	},
+	{
+		.procname	= "drop_unicast_in_l2_multicast",
+		.data		= &ipv6_devconf.drop_unicast_in_l2_multicast,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
+	{
+		.procname	= "drop_unsolicited_na",
+		.data		= &ipv6_devconf.drop_unsolicited_na,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
+	{
+		.procname	= "keep_addr_on_down",
+		.data		= &ipv6_devconf.keep_addr_on_down,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+
+	},
+	{
+		/* sentinel */
+	}
 };
 
 static int __addrconf_sysctl_register(struct net *net, char *dev_name,
 		struct inet6_dev *idev, struct ipv6_devconf *p)
 {
 	int i;
-	struct addrconf_sysctl_table *t;
+	struct ctl_table *table;
 	char path[sizeof("net/ipv6/conf/") + IFNAMSIZ];
 
-	t = kmemdup(&addrconf_sysctl, sizeof(*t), GFP_KERNEL);
-	if (!t)
+	table = kmemdup(addrconf_sysctl, sizeof(addrconf_sysctl), GFP_KERNEL);
+	if (!table)
 		goto out;
 
-	for (i = 0; t->addrconf_vars[i].data; i++) {
-		t->addrconf_vars[i].data += (char *)p - (char *)&ipv6_devconf;
-		t->addrconf_vars[i].extra1 = idev; /* embedded; no ref */
-		t->addrconf_vars[i].extra2 = net;
+	for (i = 0; table[i].data; i++) {
+		table[i].data += (char *)p - (char *)&ipv6_devconf;
+		table[i].extra1 = idev; /* embedded; no ref */
+		table[i].extra2 = net;
 	}
 
 	snprintf(path, sizeof(path), "net/ipv6/conf/%s", dev_name);
 
-	t->sysctl_header = register_net_sysctl(net, path, t->addrconf_vars);
-	if (!t->sysctl_header)
+	p->sysctl_header = register_net_sysctl(net, path, table);
+	if (!p->sysctl_header)
 		goto free;
 
-	p->sysctl = t;
 	return 0;
 
 free:
-	kfree(t);
+	kfree(table);
 out:
 	return -ENOBUFS;
 }
 
 static void __addrconf_sysctl_unregister(struct ipv6_devconf *p)
 {
-	struct addrconf_sysctl_table *t;
+	struct ctl_table *table;
 
-	if (!p->sysctl)
+	if (!p->sysctl_header)
 		return;
 
-	t = p->sysctl;
-	p->sysctl = NULL;
-	unregister_net_sysctl_table(t->sysctl_header);
-	kfree(t);
+	table = p->sysctl_header->ctl_table_arg;
+	unregister_net_sysctl_table(p->sysctl_header);
+	p->sysctl_header = NULL;
+	kfree(table);
 }
 
 static int addrconf_sysctl_register(struct inet6_dev *idev)