[PATCH v2 03/11] net/mlx5/hws: add check if matcher contains complex rules

[Dariusz Sosnowski]

From: Erez Shitrit <erezsh at nvidia.com>

The function returns true if that matcher can contain complicated rule,
which means rule that needs more than one writing to the HW in order to
have it.

Signed-off-by: Erez Shitrit <erezsh at nvidia.com>
Acked-by: Ori Kam <orika at nvidia.com>
---
 drivers/net/mlx5/hws/mlx5dr.h         |  8 ++++++++
 drivers/net/mlx5/hws/mlx5dr_action.c  |  6 ++++++
 drivers/net/mlx5/hws/mlx5dr_action.h  |  2 ++
 drivers/net/mlx5/hws/mlx5dr_matcher.c | 17 +++++++++++++++++
 4 files changed, 33 insertions(+)

diff --git a/drivers/net/mlx5/hws/mlx5dr.h b/drivers/net/mlx5/hws/mlx5dr.h
index c5824a6480..36ecccf9ac 100644
--- a/drivers/net/mlx5/hws/mlx5dr.h
+++ b/drivers/net/mlx5/hws/mlx5dr.h
@@ -500,6 +500,14 @@ int mlx5dr_matcher_resize_rule_move(struct mlx5dr_matcher *src_matcher,
  */
 bool mlx5dr_matcher_is_updatable(struct mlx5dr_matcher *matcher);
 
+/* Check matcher if might contain rules that need complex structure
+ *
+ * @param[in] matcher
+ *	that the rule belongs to.
+ * @return true when the matcher is contains such rules, false otherwise.
+ */
+bool mlx5dr_matcher_is_dependent(struct mlx5dr_matcher *matcher);
+
 /* Get the size of the rule handle (mlx5dr_rule) to be used on rule creation.
  *
  * @return size in bytes of rule handle struct.
diff --git a/drivers/net/mlx5/hws/mlx5dr_action.c b/drivers/net/mlx5/hws/mlx5dr_action.c
index 96cad553aa..084d4d606e 100644
--- a/drivers/net/mlx5/hws/mlx5dr_action.c
+++ b/drivers/net/mlx5/hws/mlx5dr_action.c
@@ -3686,6 +3686,7 @@ int mlx5dr_action_template_process(struct mlx5dr_action_template *at)
 			setter->flags |= ASF_SINGLE1 | ASF_REMOVE;
 			setter->set_single = &mlx5dr_action_setter_ipv6_route_ext_pop;
 			setter->idx_single = i;
+			at->need_dep_write = true;
 			break;
 
 		case MLX5DR_ACTION_TYP_PUSH_IPV6_ROUTE_EXT:
@@ -3712,6 +3713,7 @@ int mlx5dr_action_template_process(struct mlx5dr_action_template *at)
 			setter->set_double = &mlx5dr_action_setter_ipv6_route_ext_mhdr;
 			setter->idx_double = i;
 			setter->extra_data = 2;
+			at->need_dep_write = true;
 			break;
 
 		case MLX5DR_ACTION_TYP_MODIFY_HDR:
@@ -3720,6 +3722,7 @@ int mlx5dr_action_template_process(struct mlx5dr_action_template *at)
 			setter->flags |= ASF_DOUBLE | ASF_MODIFY;
 			setter->set_double = &mlx5dr_action_setter_modify_header;
 			setter->idx_double = i;
+			at->need_dep_write = true;
 			break;
 
 		case MLX5DR_ACTION_TYP_ASO_METER:
@@ -3747,6 +3750,7 @@ int mlx5dr_action_template_process(struct mlx5dr_action_template *at)
 			setter->flags |= ASF_DOUBLE | ASF_INSERT;
 			setter->set_double = &mlx5dr_action_setter_insert_ptr;
 			setter->idx_double = i;
+			at->need_dep_write = true;
 			break;
 
 		case MLX5DR_ACTION_TYP_REFORMAT_L2_TO_TNL_L3:
@@ -3757,6 +3761,7 @@ int mlx5dr_action_template_process(struct mlx5dr_action_template *at)
 			setter->idx_double = i;
 			setter->set_single = &mlx5dr_action_setter_common_decap;
 			setter->idx_single = i;
+			at->need_dep_write = true;
 			break;
 
 		case MLX5DR_ACTION_TYP_REFORMAT_TNL_L3_TO_L2:
@@ -3765,6 +3770,7 @@ int mlx5dr_action_template_process(struct mlx5dr_action_template *at)
 			setter->flags |= ASF_DOUBLE | ASF_MODIFY | ASF_INSERT;
 			setter->set_double = &mlx5dr_action_setter_tnl_l3_to_l2;
 			setter->idx_double = i;
+			at->need_dep_write = true;
 			break;
 
 		case MLX5DR_ACTION_TYP_TAG:
diff --git a/drivers/net/mlx5/hws/mlx5dr_action.h b/drivers/net/mlx5/hws/mlx5dr_action.h
index 064c18a90c..57e059a572 100644
--- a/drivers/net/mlx5/hws/mlx5dr_action.h
+++ b/drivers/net/mlx5/hws/mlx5dr_action.h
@@ -151,6 +151,8 @@ struct mlx5dr_action_template {
 	uint8_t num_of_action_stes;
 	uint8_t num_actions;
 	uint8_t only_term;
+	/* indicates rule might require dependent wqe */
+	bool need_dep_write;
 	uint32_t flags;
 };
 
diff --git a/drivers/net/mlx5/hws/mlx5dr_matcher.c b/drivers/net/mlx5/hws/mlx5dr_matcher.c
index 4e4da8e8f6..1c64abfa57 100644
--- a/drivers/net/mlx5/hws/mlx5dr_matcher.c
+++ b/drivers/net/mlx5/hws/mlx5dr_matcher.c
@@ -1542,6 +1542,23 @@ bool mlx5dr_matcher_is_updatable(struct mlx5dr_matcher *matcher)
 	return true;
 }
 
+bool mlx5dr_matcher_is_dependent(struct mlx5dr_matcher *matcher)
+{
+	int i;
+
+	if (matcher->action_ste.max_stes || mlx5dr_matcher_req_fw_wqe(matcher))
+		return true;
+
+	for (i = 0; i < matcher->num_of_at; i++) {
+		struct mlx5dr_action_template *at = &matcher->at[i];
+
+		if (at->need_dep_write)
+			return true;
+	}
+
+	return false;
+}
+
 static int mlx5dr_matcher_resize_precheck(struct mlx5dr_matcher *src_matcher,
 					  struct mlx5dr_matcher *dst_matcher)
 {
-- 
2.39.2