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| author |   Bob Gilligan <gilligan@aristanetworks.com> | 2013-12-15 13:39:56 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2013-12-17 16:14:35 -0500 |
| commit | 53385d2d1de84f4036a0919ec46964c4e81b83f5 (patch) | |
| tree | 95ac370a41050ecb778fe2c5a2acd50312c82a25 /net/core/neighbour.c | |
| parent | ipv4: improve documentation of ip_no_pmtu_disc (diff) | |
| download | linux-dev-53385d2d1de84f4036a0919ec46964c4e81b83f5.tar.xz linux-dev-53385d2d1de84f4036a0919ec46964c4e81b83f5.zip | |
neigh: Netlink notification for administrative NUD state change
The neighbour code sends up an RTM_NEWNEIGH netlink notification if
the NUD state of a neighbour cache entry is changed by a timer (e.g.
from REACHABLE to STALE), even if the lladdr of the entry has not
changed.
But an administrative change to the the NUD state of a neighbour cache
entry that does not change the lladdr (e.g. via "ip -4 neigh change
... nud ...") does not trigger a netlink notification. This means
that netlink listeners will not hear about administrative NUD state
changes such as from a resolved state to PERMANENT.
This patch changes the neighbor code to generate an RTM_NEWNEIGH
message when the NUD state of an entry is changed administratively.
Signed-off-by: Bob Gilligan <gilligan@aristanetworks.com>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/neighbour.c')
| -rw-r--r-- | net/core/neighbour.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/core/neighbour.c b/net/core/neighbour.c index ca15f32821fb..36b1443f9ae4 100644 --- a/net/core/neighbour.c +++ b/net/core/neighbour.c @@ -1161,6 +1161,7 @@ int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new, neigh->parms->reachable_time : 0))); neigh->nud_state = new; + notify = 1; } if (lladdr != neigh->ha) { |