net/mlx5e: TC, add terminating actions

Extend act api to identify actions that terminate action list.
Pre-step for terminating branching actions.
Signed-off-by: Oz Shlomo <ozsh@nvidia.com>
Reviewed-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Link: https://lore.kernel.org/r/20221203221337.29267-5-saeed@kernel.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/accept.c

@@ -28,4 +28,5 @@ tc_act_parse_accept(struct mlx5e_tc_act_parse_state *parse_state,
 struct mlx5e_tc_act mlx5e_tc_act_accept = {
 	.can_offload = tc_act_can_offload_accept,
 	.parse_action = tc_act_parse_accept,
+	.is_terminating_action = true,
 };

drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/act.c

@@ -11,7 +11,7 @@ static struct mlx5e_tc_act *tc_acts_fdb[NUM_FLOW_ACTIONS] = {
 	[FLOW_ACTION_DROP] = &mlx5e_tc_act_drop,
 	[FLOW_ACTION_TRAP] = &mlx5e_tc_act_trap,
 	[FLOW_ACTION_GOTO] = &mlx5e_tc_act_goto,
-	[FLOW_ACTION_REDIRECT] = &mlx5e_tc_act_mirred,
+	[FLOW_ACTION_REDIRECT] = &mlx5e_tc_act_redirect,
 	[FLOW_ACTION_MIRRED] = &mlx5e_tc_act_mirred,
 	[FLOW_ACTION_REDIRECT_INGRESS] = &mlx5e_tc_act_redirect_ingress,
 	[FLOW_ACTION_VLAN_PUSH] = &mlx5e_tc_act_vlan,

drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/act.h

@@ -60,6 +60,8 @@ struct mlx5e_tc_act {
 
 	int (*stats_action)(struct mlx5e_priv *priv,
 			    struct flow_offload_action *fl_act);
+
+	bool is_terminating_action;
 };
 
 struct mlx5e_tc_flow_action {
@@ -81,6 +83,7 @@ extern struct mlx5e_tc_act mlx5e_tc_act_vlan_mangle;
 extern struct mlx5e_tc_act mlx5e_tc_act_mpls_push;
 extern struct mlx5e_tc_act mlx5e_tc_act_mpls_pop;
 extern struct mlx5e_tc_act mlx5e_tc_act_mirred;
+extern struct mlx5e_tc_act mlx5e_tc_act_redirect;
 extern struct mlx5e_tc_act mlx5e_tc_act_mirred_nic;
 extern struct mlx5e_tc_act mlx5e_tc_act_ct;
 extern struct mlx5e_tc_act mlx5e_tc_act_sample;

drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/drop.c

@@ -27,4 +27,5 @@ tc_act_parse_drop(struct mlx5e_tc_act_parse_state *parse_state,
 struct mlx5e_tc_act mlx5e_tc_act_drop = {
 	.can_offload = tc_act_can_offload_drop,
 	.parse_action = tc_act_parse_drop,
+	.is_terminating_action = true,
 };

drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/goto.c

@@ -121,4 +121,5 @@ struct mlx5e_tc_act mlx5e_tc_act_goto = {
 	.can_offload = tc_act_can_offload_goto,
 	.parse_action = tc_act_parse_goto,
 	.post_parse = tc_act_post_parse_goto,
+	.is_terminating_action = true,
 };

drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/mirred.c

@@ -334,4 +334,11 @@ tc_act_parse_mirred(struct mlx5e_tc_act_parse_state *parse_state,
 struct mlx5e_tc_act mlx5e_tc_act_mirred = {
 	.can_offload = tc_act_can_offload_mirred,
 	.parse_action = tc_act_parse_mirred,
+	.is_terminating_action = false,
+};
+
+struct mlx5e_tc_act mlx5e_tc_act_redirect = {
+	.can_offload = tc_act_can_offload_mirred,
+	.parse_action = tc_act_parse_mirred,
+	.is_terminating_action = true,
 };

drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/mirred_nic.c

@@ -48,4 +48,5 @@ tc_act_parse_mirred_nic(struct mlx5e_tc_act_parse_state *parse_state,
 struct mlx5e_tc_act mlx5e_tc_act_mirred_nic = {
 	.can_offload = tc_act_can_offload_mirred_nic,
 	.parse_action = tc_act_parse_mirred_nic,
+	.is_terminating_action = true,
 };