diff options
| author | Gao feng <gaofeng@cn.fujitsu.com> | 2013-06-20 10:01:33 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-06-19 21:13:24 -0700 |
| commit | 170d6f99541600ec7512f1d2b0b0c349009098d2 (patch) | |
| tree | 939fa57fa9d7f52dc1341e3d43788a7eff8e157c /net/core/neighbour.c | |
| parent | cf89d6b2803ab99ac596f95d585c3057d2be645c (diff) | |
| download | linux-170d6f99541600ec7512f1d2b0b0c349009098d2.tar.bz2 | |
neigh: only allow init_net to change the default neigh_parms
Though we don't export the /proc/sys/net/ipv[4,6]/neigh/default/
directory to the un-init_net, but we can still use cmd such as
"ip ntable change name arp_cache locktime 129" to change the locktime
of default neigh_parms.
This patch disallows the un-init_net to find out the neigh_table.parms.
So the un-init_net will failed to influence the init_net.
Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/neighbour.c')
| -rw-r--r-- | net/core/neighbour.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/core/neighbour.c b/net/core/neighbour.c index 53eab513955a..86f9b165bbba 100644 --- a/net/core/neighbour.c +++ b/net/core/neighbour.c @@ -1419,7 +1419,7 @@ static inline struct neigh_parms *lookup_neigh_parms(struct neigh_table *tbl, for (p = &tbl->parms; p; p = p->next) { if ((p->dev && p->dev->ifindex == ifindex && net_eq(neigh_parms_net(p), net)) || - (!p->dev && !ifindex)) + (!p->dev && !ifindex && net_eq(net, &init_net))) return p; } |