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[NETLINK]: Add notification message sending interface

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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 <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Thomas Graf 2006-08-15 00:31:06 -07:00 • committed by David S. Miller
commit d387f6ad10
5 changed files with 42 additions and 7 deletions
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2
net/netlabel/netlabel_user.c
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@ -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);
}