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mpls: Multicast route table change notifications

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Unlike IPv4 this code notifies on all cases where mpls routes
are added or removed and it never automatically removes routes.
Avoiding both the userspace confusion that is caused by omitting
route updates and the possibility of a flood of netlink traffic
when an interface goes doew.

For now reserved labels are handled automatically and userspace
is not notified.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric W. Biederman 2015-03-03 19:14:31 -06:00 • committed by David S. Miller
parent 03c0566542
commit 8de147dc8e
2 changed files with 62 additions and 0 deletions
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2
include/uapi/linux/rtnetlink.h
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@ -631,6 +631,8 @@ enum rtnetlink_groups {
#define RTNLGRP_IPV6_NETCONF RTNLGRP_IPV6_NETCONF
RTNLGRP_MDB,
#define RTNLGRP_MDB RTNLGRP_MDB
RTNLGRP_MPLS_ROUTE,
#define RTNLGRP_MPLS_ROUTE RTNLGRP_MPLS_ROUTE
__RTNLGRP_MAX
};
#define RTNLGRP_MAX (__RTNLGRP_MAX - 1)