[patch net-next] spectrum: flower: Treat ETH_P_ALL as a special case and translate for HW

[Jiri Pirko]

From: Jiri Pirko <j...@mellanox.com>

HW does not understand ETH_P_ALL. So treat this special case differently
and translate to 0/0 key/mask. That will allow HW to match all ethertypes.

Fixes: 7aa0f5aa9030 ("mlxsw: spectrum: Implement TC flower offload")
Signed-off-by: Jiri Pirko <j...@mellanox.com>
Reviewed-by: Ido Schimmel <ido...@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c 
b/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c
index 35b147a..22ab429 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c
@@ -197,11 +197,18 @@ static int mlxsw_sp_flower_parse(struct mlxsw_sp 
*mlxsw_sp,
                        skb_flow_dissector_target(f->dissector,
                                                  FLOW_DISSECTOR_KEY_BASIC,
                                                  f->mask);
-               ip_proto = key->ip_proto;
+               u16 n_proto_key = ntohs(key->n_proto);
+               u16 n_proto_mask = ntohs(mask->n_proto);
+
+               if (n_proto_key == ETH_P_ALL) {
+                       n_proto_key = 0;
+                       n_proto_mask = 0;
+               }
                mlxsw_sp_acl_rulei_keymask_u32(rulei,
                                               MLXSW_AFK_ELEMENT_ETHERTYPE,
-                                              ntohs(key->n_proto),
-                                              ntohs(mask->n_proto));
+                                              n_proto_key, n_proto_mask);
+
+               ip_proto = key->ip_proto;
                mlxsw_sp_acl_rulei_keymask_u32(rulei,
                                               MLXSW_AFK_ELEMENT_IP_PROTO,
                                               key->ip_proto, mask->ip_proto);
-- 
2.7.4