[dpdk-dev] [PATCH 1/2] net/ice: save meta on switch filter creation

[dapengx.yu@intel.com]

From: Dapeng Yu <dapengx.yu@intel.com>

The meta is abandoned when switch filter is created in original
implementation.

This patch saved the meta in RTE flow for future use.

Fixes: 47d460d63233 ("net/ice: rework switch filter")
Cc: stable@dpdk.org

Signed-off-by: Dapeng Yu <dapengx.yu@intel.com>
---
 drivers/net/ice/ice_switch_filter.c | 69 ++++++++++++++++++++---------
 1 file changed, 49 insertions(+), 20 deletions(-)

diff --git a/drivers/net/ice/ice_switch_filter.c b/drivers/net/ice/ice_switch_filter.c
index 6b0c1bff1e..804cf9b812 100644
--- a/drivers/net/ice/ice_switch_filter.c
+++ b/drivers/net/ice/ice_switch_filter.c
@@ -180,6 +180,21 @@ struct sw_meta {
 	struct ice_adv_rule_info rule_info;
 };
 
+struct ice_switch_filter_conf {
+	bool added;
+
+	/* Only when added flag is true, the query data is valid */
+	struct ice_rule_query_data sw_query_data;
+
+	/*
+	 * The lookup elements and rule info are saved here when filter creation
+	 * succeeds.
+	 */
+	uint16_t lkups_num;
+	struct ice_adv_lkup_elem *lkups;
+	struct ice_adv_rule_info rule_info;
+};
+
 static struct ice_flow_parser ice_switch_dist_parser;
 static struct ice_flow_parser ice_switch_perm_parser;
 
@@ -359,7 +374,7 @@ ice_switch_create(struct ice_adapter *ad,
 	struct ice_pf *pf = &ad->pf;
 	struct ice_hw *hw = ICE_PF_TO_HW(pf);
 	struct ice_rule_query_data rule_added = {0};
-	struct ice_rule_query_data *filter_ptr;
+	struct ice_switch_filter_conf *filter_conf_ptr;
 	struct ice_adv_lkup_elem *list =
 		((struct sw_meta *)meta)->list;
 	uint16_t lkups_cnt =
@@ -381,18 +396,24 @@ ice_switch_create(struct ice_adapter *ad,
 	}
 	ret = ice_add_adv_rule(hw, list, lkups_cnt, rule_info, &rule_added);
 	if (!ret) {
-		filter_ptr = rte_zmalloc("ice_switch_filter",
-			sizeof(struct ice_rule_query_data), 0);
-		if (!filter_ptr) {
+		filter_conf_ptr = rte_zmalloc("ice_switch_filter",
+			sizeof(struct ice_switch_filter_conf), 0);
+		if (!filter_conf_ptr) {
 			rte_flow_error_set(error, EINVAL,
 				   RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 				   "No memory for ice_switch_filter");
 			goto error;
 		}
-		flow->rule = filter_ptr;
-		rte_memcpy(filter_ptr,
-			&rule_added,
-			sizeof(struct ice_rule_query_data));
+
+		filter_conf_ptr->sw_query_data = rule_added;
+
+		filter_conf_ptr->lkups = list;
+		filter_conf_ptr->lkups_num = lkups_cnt;
+		filter_conf_ptr->rule_info = *rule_info;
+
+		filter_conf_ptr->added = true;
+
+		flow->rule = filter_conf_ptr;
 	} else {
 		rte_flow_error_set(error, EINVAL,
 			RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
@@ -400,7 +421,6 @@ ice_switch_create(struct ice_adapter *ad,
 		goto error;
 	}
 
-	rte_free(list);
 	rte_free(meta);
 	return 0;
 
@@ -411,6 +431,18 @@ ice_switch_create(struct ice_adapter *ad,
 	return -rte_errno;
 }
 
+static inline void
+ice_switch_filter_rule_free(struct rte_flow *flow)
+{
+	struct ice_switch_filter_conf *filter_conf_ptr =
+		(struct ice_switch_filter_conf *)flow->rule;
+
+	if (filter_conf_ptr)
+		rte_free(filter_conf_ptr->lkups);
+
+	rte_free(filter_conf_ptr);
+}
+
 static int
 ice_switch_destroy(struct ice_adapter *ad,
 		struct rte_flow *flow,
@@ -418,20 +450,23 @@ ice_switch_destroy(struct ice_adapter *ad,
 {
 	struct ice_hw *hw = &ad->hw;
 	int ret;
-	struct ice_rule_query_data *filter_ptr;
+	struct ice_switch_filter_conf *filter_conf_ptr;
 
-	filter_ptr = (struct ice_rule_query_data *)
+	filter_conf_ptr = (struct ice_switch_filter_conf *)
 		flow->rule;
 
-	if (!filter_ptr) {
+	if (!filter_conf_ptr || !filter_conf_ptr->added) {
 		rte_flow_error_set(error, EINVAL,
 			RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 			"no such flow"
 			" create by switch filter");
+
+		ice_switch_filter_rule_free(flow);
+
 		return -rte_errno;
 	}
 
-	ret = ice_rem_adv_rule_by_id(hw, filter_ptr);
+	ret = ice_rem_adv_rule_by_id(hw, &filter_conf_ptr->sw_query_data);
 	if (ret) {
 		rte_flow_error_set(error, EINVAL,
 			RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
@@ -439,16 +474,10 @@ ice_switch_destroy(struct ice_adapter *ad,
 		return -rte_errno;
 	}
 
-	rte_free(filter_ptr);
+	ice_switch_filter_rule_free(flow);
 	return ret;
 }
 
-static void
-ice_switch_filter_rule_free(struct rte_flow *flow)
-{
-	rte_free(flow->rule);
-}
-
 static bool
 ice_switch_parse_pattern(const struct rte_flow_item pattern[],
 		struct rte_flow_error *error,
-- 
2.27.0