[NETLINK]: Add notification message sending interface

Adds nlmsg_notify() implementing proper notification logic. The
message is multicasted to all listeners in the group. The
applications the requests orignates from can request a unicast
back report in which case said socket will be excluded from the
multicast to avoid duplicated notifications.

nlmsg_multicast() is extended to take allocation flags to
allow notification in atomic contexts.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/netlabel/netlabel_user.c b/net/netlabel/netlabel_user.c
index 80022221b0a7..73cbe66e42ff 100644
--- a/net/netlabel/netlabel_user.c
+++ b/net/netlabel/netlabel_user.c
@@ -154,5 +154,5 @@ int netlbl_netlink_snd(struct sk_buff *skb, u32 pid)
  */
 int netlbl_netlink_snd_multicast(struct sk_buff *skb, u32 pid, u32 group)
 {
-        return genlmsg_multicast(skb, pid, group);
+        return genlmsg_multicast(skb, pid, group, GFP_KERNEL);
 }