diff options
| author | Ido Schimmel <idosch@mellanox.com> | 2020-02-20 09:07:53 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-02-20 10:04:34 -0800 |
| commit | c43ef22843db4a415d43854eaae4b08b9dcae394 (patch) | |
| tree | 6789954609c7cc1397ee7dff2e1a11d279c4d742 /drivers/net/ethernet | |
| parent | eb833eec3b4cad9d5ba54d573f88f756e4c5fb84 (diff) | |
mlxsw: spectrum_router: Do not assume RTNL is taken during nexthop init
RTNL is going to be removed from route insertion path, so use
__in_dev_get_rcu() from an RCU read-side critical section instead of
__in_dev_get_rtnl() which assumes RTNL is taken.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c index def75d7fcd06..28dca7aa4ce0 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c @@ -3840,10 +3840,14 @@ static int mlxsw_sp_nexthop4_init(struct mlxsw_sp *mlxsw_sp, if (!dev) return 0; - in_dev = __in_dev_get_rtnl(dev); + rcu_read_lock(); + in_dev = __in_dev_get_rcu(dev); if (in_dev && IN_DEV_IGNORE_ROUTES_WITH_LINKDOWN(in_dev) && - fib_nh->fib_nh_flags & RTNH_F_LINKDOWN) + fib_nh->fib_nh_flags & RTNH_F_LINKDOWN) { + rcu_read_unlock(); return 0; + } + rcu_read_unlock(); err = mlxsw_sp_nexthop4_type_init(mlxsw_sp, nh, fib_nh); if (err) |