net/mlx5e: TC, set control params for branching actions

Extend the act tc api to set the branch control params aligning with
the police conform/exceed use case.

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/20221203221337.29267-7-saeed@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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

@@ -32,6 +32,11 @@ struct mlx5e_tc_act_parse_state {
 	struct mlx5_tc_ct_priv *ct_priv;
 };
 
+struct mlx5e_tc_act_branch_ctrl {
+	enum flow_action_id act_id;
+	u32 extval;
+};
+
 struct mlx5e_tc_act {
 	bool (*can_offload)(struct mlx5e_tc_act_parse_state *parse_state,
 			    const struct flow_action_entry *act,
@@ -61,6 +66,10 @@ struct mlx5e_tc_act {
 	int (*stats_action)(struct mlx5e_priv *priv,
 			    struct flow_offload_action *fl_act);
 
+	bool (*get_branch_ctrl)(const struct flow_action_entry *act,
+				struct mlx5e_tc_act_branch_ctrl *cond_true,
+				struct mlx5e_tc_act_branch_ctrl *cond_false);
+
 	bool is_terminating_action;
 };
 

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

@@ -147,6 +147,19 @@ tc_act_police_stats(struct mlx5e_priv *priv,
 	return 0;
 }
 
+static bool
+tc_act_police_get_branch_ctrl(const struct flow_action_entry *act,
+			      struct mlx5e_tc_act_branch_ctrl *cond_true,
+			      struct mlx5e_tc_act_branch_ctrl *cond_false)
+{
+	cond_true->act_id = act->police.notexceed.act_id;
+	cond_true->extval = act->police.notexceed.extval;
+
+	cond_false->act_id = act->police.exceed.act_id;
+	cond_false->extval = act->police.exceed.extval;
+	return true;
+}
+
 struct mlx5e_tc_act mlx5e_tc_act_police = {
 	.can_offload = tc_act_can_offload_police,
 	.parse_action = tc_act_parse_police,
@@ -154,4 +167,5 @@ struct mlx5e_tc_act mlx5e_tc_act_police = {
 	.offload_action = tc_act_police_offload,
 	.destroy_action = tc_act_police_destroy,
 	.stats_action = tc_act_police_stats,
+	.get_branch_ctrl = tc_act_police_get_branch_ctrl,
 };