X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=net%2Fcore%2Frtnetlink.c;h=cf857c4dc7b12ab6e0ca2d79d17a036844a8eb53;hb=713c0515a555952d53956196d47dec3a3ece860a;hp=2bd9c5f7627dd84b450ec3f105263979adda77e3;hpb=98c1fc934c097d84dc30c639e9bdb0b992ef53e2;p=karo-tx-linux.git

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 2bd9c5f7627d..cf857c4dc7b1 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -82,6 +82,11 @@ int rtnl_trylock(void)
 	return mutex_trylock(&rtnl_mutex);
 }
 
+int rtnl_is_locked(void)
+{
+	return mutex_is_locked(&rtnl_mutex);
+}
+
 static struct rtnl_link *rtnl_msg_handlers[NPROTO];
 
 static inline int rtm_msgindex(int msgtype)
@@ -269,6 +274,26 @@ int rtnl_link_register(struct rtnl_link_ops *ops)
 
 EXPORT_SYMBOL_GPL(rtnl_link_register);
 
+static void __rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops)
+{
+	struct net_device *dev;
+restart:
+	for_each_netdev(net, dev) {
+		if (dev->rtnl_link_ops == ops) {
+			ops->dellink(dev);
+			goto restart;
+		}
+	}
+}
+
+void rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops)
+{
+	rtnl_lock();
+	__rtnl_kill_links(net, ops);
+	rtnl_unlock();
+}
+EXPORT_SYMBOL_GPL(rtnl_kill_links);
+
 /**
  * __rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink.
  * @ops: struct rtnl_link_ops * to unregister
@@ -277,17 +302,10 @@ EXPORT_SYMBOL_GPL(rtnl_link_register);
  */
 void __rtnl_link_unregister(struct rtnl_link_ops *ops)
 {
-	struct net_device *dev, *n;
 	struct net *net;
 
 	for_each_net(net) {
-restart:
-		for_each_netdev_safe(net, dev, n) {
-			if (dev->rtnl_link_ops == ops) {
-				ops->dellink(dev);
-				goto restart;
-			}
-		}
+		__rtnl_kill_links(net, ops);
 	}
 	list_del(&ops->list);
 }
@@ -662,7 +680,7 @@ nla_put_failure:
 
 static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
 {
-	struct net *net = skb->sk->sk_net;
+	struct net *net = sock_net(skb->sk);
 	int idx;
 	int s_idx = cb->args[0];
 	struct net_device *dev;
@@ -879,7 +897,7 @@ errout:
 
 static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
 {
-	struct net *net = skb->sk->sk_net;
+	struct net *net = sock_net(skb->sk);
 	struct ifinfomsg *ifm;
 	struct net_device *dev;
 	int err;
@@ -921,7 +939,7 @@ errout:
 
 static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
 {
-	struct net *net = skb->sk->sk_net;
+	struct net *net = sock_net(skb->sk);
 	const struct rtnl_link_ops *ops;
 	struct net_device *dev;
 	struct ifinfomsg *ifm;
@@ -972,7 +990,7 @@ struct net_device *rtnl_create_link(struct net *net, char *ifname,
 			goto err_free;
 	}
 
-	dev->nd_net = net;
+	dev_net_set(dev, net);
 	dev->rtnl_link_ops = ops;
 
 	if (tb[IFLA_MTU])
@@ -1000,7 +1018,7 @@ err:
 
 static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
 {
-	struct net *net = skb->sk->sk_net;
+	struct net *net = sock_net(skb->sk);
 	const struct rtnl_link_ops *ops;
 	struct net_device *dev;
 	struct ifinfomsg *ifm;
@@ -1132,7 +1150,7 @@ replay:
 
 static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
 {
-	struct net *net = skb->sk->sk_net;
+	struct net *net = sock_net(skb->sk);
 	struct ifinfomsg *ifm;
 	struct nlattr *tb[IFLA_MAX+1];
 	struct net_device *dev = NULL;
@@ -1198,7 +1216,7 @@ static int rtnl_dump_all(struct sk_buff *skb, struct netlink_callback *cb)
 
 void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change)
 {
-	struct net *net = dev->nd_net;
+	struct net *net = dev_net(dev);
 	struct sk_buff *skb;
 	int err = -ENOBUFS;
 
@@ -1227,7 +1245,7 @@ static int rtattr_max;
 
 static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 {
-	struct net *net = skb->sk->sk_net;
+	struct net *net = sock_net(skb->sk);
 	rtnl_doit_func doit;
 	int sz_idx, kind;
 	int min_len;
@@ -1389,6 +1407,7 @@ EXPORT_SYMBOL(rtnetlink_put_metrics);
 EXPORT_SYMBOL(rtnl_lock);
 EXPORT_SYMBOL(rtnl_trylock);
 EXPORT_SYMBOL(rtnl_unlock);
+EXPORT_SYMBOL(rtnl_is_locked);
 EXPORT_SYMBOL(rtnl_unicast);
 EXPORT_SYMBOL(rtnl_notify);
 EXPORT_SYMBOL(rtnl_set_sk_err);