[NET]: Make rtnetlink infrastructure network namespace aware (v3)

[cascardo/linux.git] / net / ipv4 / devinet.c

diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index b42f746..6e75c88 100644 (file)
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -441,6 +441,7 @@ struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, __be32 prefix,
 
 static int inet_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
 {
+       struct net *net = skb->sk->sk_net;
        struct nlattr *tb[IFA_MAX+1];
        struct in_device *in_dev;
        struct ifaddrmsg *ifm;
@@ -449,6 +450,9 @@ static int inet_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg
 
        ASSERT_RTNL();
 
+       if (net != &init_net)
+               return -EINVAL;
+
        err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv4_policy);
        if (err < 0)
                goto errout;
@@ -560,10 +564,14 @@ errout:
 
 static int inet_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
 {
+       struct net *net = skb->sk->sk_net;
        struct in_ifaddr *ifa;
 
        ASSERT_RTNL();
 
+       if (net != &init_net)
+               return -EINVAL;
+
        ifa = rtm_to_ifaddr(nlh);
        if (IS_ERR(ifa))
                return PTR_ERR(ifa);
@@ -1174,12 +1182,16 @@ nla_put_failure:
 
 static int inet_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb)
 {
+       struct net *net = skb->sk->sk_net;
        int idx, ip_idx;
        struct net_device *dev;
        struct in_device *in_dev;
        struct in_ifaddr *ifa;
        int s_ip_idx, s_idx = cb->args[0];
 
+       if (net != &init_net)
+               return 0;
+
        s_ip_idx = ip_idx = cb->args[1];
        idx = 0;
        for_each_netdev(&init_net, dev) {
@@ -1228,10 +1240,10 @@ static void rtmsg_ifa(int event, struct in_ifaddr* ifa, struct nlmsghdr *nlh,
                kfree_skb(skb);
                goto errout;
        }
-       err = rtnl_notify(skb, pid, RTNLGRP_IPV4_IFADDR, nlh, GFP_KERNEL);
+       err = rtnl_notify(skb, &init_net, pid, RTNLGRP_IPV4_IFADDR, nlh, GFP_KERNEL);
 errout:
        if (err < 0)
-               rtnl_set_sk_err(RTNLGRP_IPV4_IFADDR, err);
+               rtnl_set_sk_err(&init_net, RTNLGRP_IPV4_IFADDR, err);
 }
 
 #ifdef CONFIG_SYSCTL