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authorJulian Anastasov <ja@ssi.bg>2016-07-27 09:56:50 +0300
committerDavid S. Miller <davem@davemloft.net>2016-08-08 15:36:38 -0700
commit0e7bbcc104baaade4f64205e9706b7d43c46db7d (patch)
tree5ff5e163b9e7e221a85df4aab53f58d44606bf97 /net/core
parent1fe323aa1b2390a0c57fb0b06a782f128d49094c (diff)
neigh: allow admin to set NUD_STALE
Admin should be able to set any state. Currently, this fails when lladdr is not changed and state is changed from NUD_CONNECTED to NUD_STALE: ip neigh add 192.168.8.1 lladdr 00:11:22:33:44:55 nud perm dev wlan0 ip neigh show to 192.168.8.1 192.168.8.1 dev wlan0 lladdr 00:11:22:33:44:55 PERMANENT ip neigh change 192.168.8.1 lladdr 00:11:22:33:44:55 nud stale dev wlan0 ip neigh show to 192.168.8.1 192.168.8.1 dev wlan0 lladdr 00:11:22:33:44:55 PERMANENT Problem may be from 2.1.X days. Signed-off-by: Julian Anastasov <ja@ssi.bg> Reviewed-by: Chunhui He <hchunhui@mail.ustc.edu.cn> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
-rw-r--r--net/core/neighbour.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index cf26e04c4046..2ae929f9bd06 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -1148,7 +1148,8 @@ int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new,
} else
goto out;
} else {
- if (lladdr == neigh->ha && new == NUD_STALE)
+ if (lladdr == neigh->ha && new == NUD_STALE &&
+ !(flags & NEIGH_UPDATE_F_ADMIN))
new = old;
}
}