net: ipv4: notify when address lifetime changes

if userspace changes lifetime of address, send netlink notification and
call notifier.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index f678507bc8291f7df43108f470e41c3929af50e8..96083b7a436bc9efddd0b8b3473caa78286e5f02 100644 (file)
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -802,8 +802,10 @@ static int inet_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg
                if (nlh->nlmsg_flags & NLM_F_EXCL ||
                    !(nlh->nlmsg_flags & NLM_F_REPLACE))
                        return -EEXIST;
-
-               set_ifa_lifetime(ifa_existing, valid_lft, prefered_lft);
+               ifa = ifa_existing;
+               set_ifa_lifetime(ifa, valid_lft, prefered_lft);
+               rtmsg_ifa(RTM_NEWADDR, ifa, nlh, NETLINK_CB(skb).portid);
+               blocking_notifier_call_chain(&inetaddr_chain, NETDEV_UP, ifa);
        }
        return 0;
 }