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mlxsw: spectrum_router: Don't read 'nud_state' without lock

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We periodically ask the neighbouring system to try and resolve
neighbours that are used for nexthops, but aren't currently resolved.

However, 'nud_state' is protected by the neighbour lock, so we shouldn't
access it without taking it. Instead, we can simply check the
'connected' field of the neighbour entry, which we update upon
NEIGH_UPDATE events.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel 2017-02-06 16:20:16 +01:00 committed by David S. Miller
parent 8a0b727526
commit 01b1aa359d
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
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@ -896,7 +896,7 @@ static void mlxsw_sp_router_probe_unresolved_nexthops(struct work_struct *work)
rtnl_lock();
list_for_each_entry(neigh_entry, &mlxsw_sp->router.nexthop_neighs_list,
nexthop_neighs_list_node)
if (!(neigh_entry->key.n->nud_state & NUD_VALID))
if (!neigh_entry->connected)
neigh_event_send(neigh_entry->key.n, NULL);
rtnl_unlock();