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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 <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Thomas Graf
2006-08-15 00:31:06 -07:00
committed by David S. Miller
parent 2942e90050
commit d387f6ad10
5 changed files with 42 additions and 7 deletions
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net/netlink/genetlink.c
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@ -510,7 +510,7 @@ static int genl_ctrl_event(int event, void *data)
if (IS_ERR(msg))
return PTR_ERR(msg);
genlmsg_multicast(msg, 0, GENL_ID_CTRL);
genlmsg_multicast(msg, 0, GENL_ID_CTRL, GFP_KERNEL);
break;
}