1 files changed, 46 insertions, 47 deletions

diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 655c9b1a19b8..a72dbca9e8fc 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -51,6 +51,8 @@
 #include <net/dsfield.h>
 #include <net/net_namespace.h>
 #include <net/netns/generic.h>
+#include <net/netdev_lock.h>
+#include <net/inet_dscp.h>
 
 /*
    This version of net/ipv6/sit.c is cloned of net/ipv4/ip_gre.c
@@ -132,8 +134,8 @@ static struct ip_tunnel *ipip6_tunnel_lookup(struct net *net,
 	return NULL;
 }
 
-static struct ip_tunnel __rcu **__ipip6_bucket(struct sit_net *sitn,
-		struct ip_tunnel_parm *parms)
+static struct ip_tunnel __rcu **
+__ipip6_bucket(struct sit_net *sitn, struct ip_tunnel_parm_kern *parms)
 {
 	__be32 remote = parms->iph.daddr;
 	__be32 local = parms->iph.saddr;
@@ -200,14 +202,13 @@ static void ipip6_tunnel_clone_6rd(struct net_device *dev, struct sit_net *sitn)
 static int ipip6_tunnel_create(struct net_device *dev)
 {
 	struct ip_tunnel *t = netdev_priv(dev);
-	struct net *net = dev_net(dev);
-	struct sit_net *sitn = net_generic(net, sit_net_id);
+	struct sit_net *sitn = net_generic(t->net, sit_net_id);
 	int err;
 
 	__dev_addr_set(dev, &t->parms.iph.saddr, 4);
 	memcpy(dev->broadcast, &t->parms.iph.daddr, 4);
 
-	if ((__force u16)t->parms.i_flags & SIT_ISATAP)
+	if (test_bit(IP_TUNNEL_SIT_ISATAP_BIT, t->parms.i_flags))
 		dev->priv_flags |= IFF_ISATAP;
 
 	dev->rtnl_link_ops = &sit_link_ops;
@@ -226,7 +227,8 @@ out:
 }
 
 static struct ip_tunnel *ipip6_tunnel_locate(struct net *net,
-		struct ip_tunnel_parm *parms, int create)
+					     struct ip_tunnel_parm_kern *parms,
+					     int create)
 {
 	__be32 remote = parms->iph.daddr;
 	__be32 local = parms->iph.saddr;
@@ -267,6 +269,7 @@ static struct ip_tunnel *ipip6_tunnel_locate(struct net *net,
 
 	nt = netdev_priv(dev);
 
+	nt->net = net;
 	nt->parms = *parms;
 	if (ipip6_tunnel_create(dev) < 0)
 		goto failed_free;
@@ -934,8 +937,8 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb,
 	}
 
 	flowi4_init_output(&fl4, tunnel->parms.link, tunnel->fwmark,
-			   RT_TOS(tos), RT_SCOPE_UNIVERSE, IPPROTO_IPV6,
-			   0, dst, tiph->saddr, 0, 0,
+			   tos & INET_DSCP_MASK, RT_SCOPE_UNIVERSE,
+			   IPPROTO_IPV6, 0, dst, tiph->saddr, 0, 0,
 			   sock_net_uid(tunnel->net, NULL));
 
 	rt = dst_cache_get_ip4(&tunnel->dst_cache, &fl4.saddr);
@@ -1110,7 +1113,7 @@ static void ipip6_tunnel_bind_dev(struct net_device *dev)
 							  iph->daddr, iph->saddr,
 							  0, 0,
 							  IPPROTO_IPV6,
-							  RT_TOS(iph->tos),
+							  iph->tos & INET_DSCP_MASK,
 							  tunnel->parms.link);
 
 		if (!IS_ERR(rt)) {
@@ -1135,7 +1138,8 @@ static void ipip6_tunnel_bind_dev(struct net_device *dev)
 	dev->needed_headroom = t_hlen + hlen;
 }
 
-static void ipip6_tunnel_update(struct ip_tunnel *t, struct ip_tunnel_parm *p,
+static void ipip6_tunnel_update(struct ip_tunnel *t,
+				struct ip_tunnel_parm_kern *p,
 				__u32 fwmark)
 {
 	struct net *net = t->net;
@@ -1196,11 +1200,11 @@ static int
 ipip6_tunnel_get6rd(struct net_device *dev, struct ip_tunnel_parm __user *data)
 {
 	struct ip_tunnel *t = netdev_priv(dev);
+	struct ip_tunnel_parm_kern p;
 	struct ip_tunnel_6rd ip6rd;
-	struct ip_tunnel_parm p;
 
 	if (dev == dev_to_sit_net(dev)->fb_tunnel_dev) {
-		if (copy_from_user(&p, data, sizeof(p)))
+		if (!ip_tunnel_parm_from_user(&p, data))
 			return -EFAULT;
 		t = ipip6_tunnel_locate(t->net, &p, 0);
 	}
@@ -1251,7 +1255,7 @@ static bool ipip6_valid_ip_proto(u8 ipproto)
 }
 
 static int
-__ipip6_tunnel_ioctl_validate(struct net *net, struct ip_tunnel_parm *p)
+__ipip6_tunnel_ioctl_validate(struct net *net, struct ip_tunnel_parm_kern *p)
 {
 	if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
 		return -EPERM;
@@ -1268,7 +1272,7 @@ __ipip6_tunnel_ioctl_validate(struct net *net, struct ip_tunnel_parm *p)
 }
 
 static int
-ipip6_tunnel_get(struct net_device *dev, struct ip_tunnel_parm *p)
+ipip6_tunnel_get(struct net_device *dev, struct ip_tunnel_parm_kern *p)
 {
 	struct ip_tunnel *t = netdev_priv(dev);
 
@@ -1281,7 +1285,7 @@ ipip6_tunnel_get(struct net_device *dev, struct ip_tunnel_parm *p)
 }
 
 static int
-ipip6_tunnel_add(struct net_device *dev, struct ip_tunnel_parm *p)
+ipip6_tunnel_add(struct net_device *dev, struct ip_tunnel_parm_kern *p)
 {
 	struct ip_tunnel *t = netdev_priv(dev);
 	int err;
@@ -1297,7 +1301,7 @@ ipip6_tunnel_add(struct net_device *dev, struct ip_tunnel_parm *p)
 }
 
 static int
-ipip6_tunnel_change(struct net_device *dev, struct ip_tunnel_parm *p)
+ipip6_tunnel_change(struct net_device *dev, struct ip_tunnel_parm_kern *p)
 {
 	struct ip_tunnel *t = netdev_priv(dev);
 	int err;
@@ -1328,7 +1332,7 @@ ipip6_tunnel_change(struct net_device *dev, struct ip_tunnel_parm *p)
 }
 
 static int
-ipip6_tunnel_del(struct net_device *dev, struct ip_tunnel_parm *p)
+ipip6_tunnel_del(struct net_device *dev, struct ip_tunnel_parm_kern *p)
 {
 	struct ip_tunnel *t = netdev_priv(dev);
 
@@ -1348,7 +1352,8 @@ ipip6_tunnel_del(struct net_device *dev, struct ip_tunnel_parm *p)
 }
 
 static int
-ipip6_tunnel_ctl(struct net_device *dev, struct ip_tunnel_parm *p, int cmd)
+ipip6_tunnel_ctl(struct net_device *dev, struct ip_tunnel_parm_kern *p,
+		 int cmd)
 {
 	switch (cmd) {
 	case SIOCGETTUNNEL:
@@ -1432,7 +1437,7 @@ static void ipip6_tunnel_setup(struct net_device *dev)
 	dev->flags		= IFF_NOARP;
 	netif_keep_dst(dev);
 	dev->addr_len		= 4;
-	dev->features		|= NETIF_F_LLTX;
+	dev->lltx		= true;
 	dev->features		|= SIT_FEATURES;
 	dev->hw_features	|= SIT_FEATURES;
 	dev->pcpu_stat_type	= NETDEV_PCPU_STAT_TSTATS;
@@ -1445,7 +1450,6 @@ static int ipip6_tunnel_init(struct net_device *dev)
 	int err;
 
 	tunnel->dev = dev;
-	tunnel->net = dev_net(dev);
 	strcpy(tunnel->parms.name, dev->name);
 
 	ipip6_tunnel_bind_dev(dev);
@@ -1490,7 +1494,7 @@ static int ipip6_validate(struct nlattr *tb[], struct nlattr *data[],
 }
 
 static void ipip6_netlink_parms(struct nlattr *data[],
-				struct ip_tunnel_parm *parms,
+				struct ip_tunnel_parm_kern *parms,
 				__u32 *fwmark)
 {
 	memset(parms, 0, sizeof(*parms));
@@ -1546,19 +1550,23 @@ static bool ipip6_netlink_6rd_parms(struct nlattr *data[],
 }
 #endif
 
-static int ipip6_newlink(struct net *src_net, struct net_device *dev,
-			 struct nlattr *tb[], struct nlattr *data[],
+static int ipip6_newlink(struct net_device *dev,
+			 struct rtnl_newlink_params *params,
 			 struct netlink_ext_ack *extack)
 {
-	struct net *net = dev_net(dev);
+	struct nlattr **data = params->data;
+	struct nlattr **tb = params->tb;
 	struct ip_tunnel *nt;
 	struct ip_tunnel_encap ipencap;
 #ifdef CONFIG_IPV6_SIT_6RD
 	struct ip_tunnel_6rd ip6rd;
 #endif
+	struct net *net;
 	int err;
 
+	net = params->link_net ? : dev_net(dev);
 	nt = netdev_priv(dev);
+	nt->net = net;
 
 	if (ip_tunnel_netlink_encap_parms(data, &ipencap)) {
 		err = ip_tunnel_encap_setup(nt, &ipencap);
@@ -1599,8 +1607,8 @@ static int ipip6_changelink(struct net_device *dev, struct nlattr *tb[],
 			    struct netlink_ext_ack *extack)
 {
 	struct ip_tunnel *t = netdev_priv(dev);
-	struct ip_tunnel_parm p;
 	struct ip_tunnel_encap ipencap;
+	struct ip_tunnel_parm_kern p;
 	struct net *net = t->net;
 	struct sit_net *sitn = net_generic(net, sit_net_id);
 #ifdef CONFIG_IPV6_SIT_6RD
@@ -1687,7 +1695,7 @@ static size_t ipip6_get_size(const struct net_device *dev)
 static int ipip6_fill_info(struct sk_buff *skb, const struct net_device *dev)
 {
 	struct ip_tunnel *tunnel = netdev_priv(dev);
-	struct ip_tunnel_parm *parm = &tunnel->parms;
+	struct ip_tunnel_parm_kern *parm = &tunnel->parms;
 
 	if (nla_put_u32(skb, IFLA_IPTUN_LINK, parm->link) ||
 	    nla_put_in_addr(skb, IFLA_IPTUN_LOCAL, parm->iph.saddr) ||
@@ -1697,7 +1705,8 @@ static int ipip6_fill_info(struct sk_buff *skb, const struct net_device *dev)
 	    nla_put_u8(skb, IFLA_IPTUN_PMTUDISC,
 		       !!(parm->iph.frag_off & htons(IP_DF))) ||
 	    nla_put_u8(skb, IFLA_IPTUN_PROTO, parm->iph.protocol) ||
-	    nla_put_be16(skb, IFLA_IPTUN_FLAGS, parm->i_flags) ||
+	    nla_put_be16(skb, IFLA_IPTUN_FLAGS,
+			 ip_tunnel_flags_to_be16(parm->i_flags)) ||
 	    nla_put_u32(skb, IFLA_IPTUN_FWMARK, tunnel->fwmark))
 		goto nla_put_failure;
 
@@ -1795,8 +1804,7 @@ static struct xfrm_tunnel mplsip_handler __read_mostly = {
 };
 #endif
 
-static void __net_exit sit_destroy_tunnels(struct net *net,
-					   struct list_head *head)
+static void __net_exit sit_exit_rtnl_net(struct net *net, struct list_head *head)
 {
 	struct sit_net *sitn = net_generic(net, sit_net_id);
 	struct net_device *dev, *aux;
@@ -1811,15 +1819,15 @@ static void __net_exit sit_destroy_tunnels(struct net *net,
 		for (h = 0; h < (prio ? IP6_SIT_HASH_SIZE : 1); h++) {
 			struct ip_tunnel *t;
 
-			t = rtnl_dereference(sitn->tunnels[prio][h]);
+			t = rtnl_net_dereference(net, sitn->tunnels[prio][h]);
 			while (t) {
 				/* If dev is in the same netns, it has already
 				 * been added to the list by the previous loop.
 				 */
 				if (!net_eq(dev_net(t->dev), net))
-					unregister_netdevice_queue(t->dev,
-								   head);
-				t = rtnl_dereference(t->next);
+					unregister_netdevice_queue(t->dev, head);
+
+				t = rtnl_net_dereference(net, t->next);
 			}
 		}
 	}
@@ -1851,7 +1859,10 @@ static int __net_init sit_init_net(struct net *net)
 	/* FB netdevice is special: we have one, and only one per netns.
 	 * Allowing to move it to another netns is clearly unsafe.
 	 */
-	sitn->fb_tunnel_dev->features |= NETIF_F_NETNS_LOCAL;
+	sitn->fb_tunnel_dev->netns_immutable = true;
+
+	t = netdev_priv(sitn->fb_tunnel_dev);
+	t->net = net;
 
 	err = register_netdev(sitn->fb_tunnel_dev);
 	if (err)
@@ -1860,8 +1871,6 @@ static int __net_init sit_init_net(struct net *net)
 	ipip6_tunnel_clone_6rd(sitn->fb_tunnel_dev, sitn);
 	ipip6_fb_tunnel_init(sitn->fb_tunnel_dev);
 
-	t = netdev_priv(sitn->fb_tunnel_dev);
-
 	strcpy(t->parms.name, sitn->fb_tunnel_dev->name);
 	return 0;
 
@@ -1871,19 +1880,9 @@ err_alloc_dev:
 	return err;
 }
 
-static void __net_exit sit_exit_batch_rtnl(struct list_head *net_list,
-					   struct list_head *dev_to_kill)
-{
-	struct net *net;
-
-	ASSERT_RTNL();
-	list_for_each_entry(net, net_list, exit_list)
-		sit_destroy_tunnels(net, dev_to_kill);
-}
-
 static struct pernet_operations sit_net_ops = {
 	.init = sit_init_net,
-	.exit_batch_rtnl = sit_exit_batch_rtnl,
+	.exit_rtnl = sit_exit_rtnl_net,
 	.id   = &sit_net_id,
 	.size = sizeof(struct sit_net),
 };