mlxsw: spectrum_flower: Forbid to offload mirred redirect on egress

Spectrum ASIC does not support redirection on egress, so refuse to
insert such flows:

$ tc qdisc add dev ens16np1 clsact
$ tc filter add dev ens16np1 egress protocol all pref 1 handle 101 flower skip_sw action mirred egress redirect dev ens16np2
Error: mlxsw_spectrum: Redirect action is not supported on egress.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c
index 202e9a2460194cce0360207ab136afd76bd6d985..1eeac8a36ead4983bdafbb641859ba4447ee18cd 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c
@@ -78,6 +78,11 @@ static int mlxsw_sp_flower_parse_actions(struct mlxsw_sp *mlxsw_sp,
                        struct mlxsw_sp_fid *fid;
                        u16 fid_index;
 
+                       if (mlxsw_sp_acl_block_is_egress_bound(block)) {
+                               NL_SET_ERR_MSG_MOD(extack, "Redirect action is not supported on egress");
+                               return -EOPNOTSUPP;
+                       }
+
                        fid = mlxsw_sp_acl_dummy_fid(mlxsw_sp);
                        fid_index = mlxsw_sp_fid_index(fid);
                        err = mlxsw_sp_acl_rulei_act_fid_set(mlxsw_sp, rulei,