Remove unnecessary variable "meta" in ice_flow_create and
ice_flow_validate, it should be defined when really be needed:
its ice_parse_engine_create and ice_parse_engine_validate.

The patch also move the meta's memory free from each filter
engine->create to upper layer, the memory leakage when create
a fdir rule is also be fixed.

Fixes: f5cafa961fae ("net/ice: add flow director create and destroy")
Cc: sta...@dpdk.org

Signed-off-by: Qi Zhang <qi.z.zh...@intel.com>
---
 drivers/net/ice/ice_generic_flow.c  | 28 ++++++++++++++--------------
 drivers/net/ice/ice_hash.c          |  2 --
 drivers/net/ice/ice_switch_filter.c |  3 ---
 3 files changed, 14 insertions(+), 19 deletions(-)

diff --git a/drivers/net/ice/ice_generic_flow.c 
b/drivers/net/ice/ice_generic_flow.c
index 38ac799d8..f22538758 100644
--- a/drivers/net/ice/ice_generic_flow.c
+++ b/drivers/net/ice/ice_generic_flow.c
@@ -1375,7 +1375,6 @@ typedef struct ice_flow_engine * (*parse_engine_t)(struct 
ice_adapter *ad,
                struct ice_parser_list *parser_list,
                const struct rte_flow_item pattern[],
                const struct rte_flow_action actions[],
-               void **meta,
                struct rte_flow_error *error);
 
 void
@@ -1713,11 +1712,11 @@ ice_parse_engine_create(struct ice_adapter *ad,
                struct ice_parser_list *parser_list,
                const struct rte_flow_item pattern[],
                const struct rte_flow_action actions[],
-               void **meta,
                struct rte_flow_error *error)
 {
        struct ice_flow_engine *engine = NULL;
        struct ice_flow_parser_node *parser_node;
+       void *meta = NULL;
        void *temp;
 
        TAILQ_FOREACH_SAFE(parser_node, parser_list, node, temp) {
@@ -1726,7 +1725,7 @@ ice_parse_engine_create(struct ice_adapter *ad,
                if (parser_node->parser->parse_pattern_action(ad,
                                parser_node->parser->array,
                                parser_node->parser->array_len,
-                               pattern, actions, meta, error) < 0)
+                               pattern, actions, &meta, error) < 0)
                        continue;
 
                engine = parser_node->parser->engine;
@@ -1737,7 +1736,9 @@ ice_parse_engine_create(struct ice_adapter *ad,
                        continue;
                }
 
-               ret = engine->create(ad, flow, *meta, error);
+               ret = engine->create(ad, flow, meta, error);
+               if (meta)
+                       rte_free(meta);
                if (ret == 0)
                        return engine;
                else if (ret == -EEXIST)
@@ -1752,23 +1753,25 @@ ice_parse_engine_validate(struct ice_adapter *ad,
                struct ice_parser_list *parser_list,
                const struct rte_flow_item pattern[],
                const struct rte_flow_action actions[],
-               void **meta,
                struct rte_flow_error *error)
 {
        struct ice_flow_engine *engine = NULL;
        struct ice_flow_parser_node *parser_node;
+       void *meta = NULL;
        void *temp;
 
        TAILQ_FOREACH_SAFE(parser_node, parser_list, node, temp) {
                if (parser_node->parser->parse_pattern_action(ad,
                                parser_node->parser->array,
                                parser_node->parser->array_len,
-                               pattern, actions, meta, error) < 0)
+                               pattern, actions, &meta, error) < 0)
                        continue;
 
                engine = parser_node->parser->engine;
                break;
        }
+       if (meta)
+               rte_free(meta);
        return engine;
 }
 
@@ -1779,7 +1782,6 @@ ice_flow_process_filter(struct rte_eth_dev *dev,
                const struct rte_flow_item pattern[],
                const struct rte_flow_action actions[],
                struct ice_flow_engine **engine,
-               void **meta,
                parse_engine_t ice_parse_engine,
                struct rte_flow_error *error)
 {
@@ -1814,7 +1816,7 @@ ice_flow_process_filter(struct rte_eth_dev *dev,
                return ret;
 
        *engine = ice_parse_engine(ad, flow, &pf->rss_parser_list,
-                       pattern, actions, meta, error);
+                       pattern, actions, error);
        if (*engine != NULL)
                return 0;
 
@@ -1822,11 +1824,11 @@ ice_flow_process_filter(struct rte_eth_dev *dev,
        case ICE_FLOW_CLASSIFY_STAGE_DISTRIBUTOR_ONLY:
        case ICE_FLOW_CLASSIFY_STAGE_DISTRIBUTOR:
                *engine = ice_parse_engine(ad, flow, &pf->dist_parser_list,
-                               pattern, actions, meta, error);
+                               pattern, actions, error);
                break;
        case ICE_FLOW_CLASSIFY_STAGE_PERMISSION:
                *engine = ice_parse_engine(ad, flow, &pf->perm_parser_list,
-                               pattern, actions, meta, error);
+                               pattern, actions, error);
                break;
        default:
                return -EINVAL;
@@ -1845,11 +1847,10 @@ ice_flow_validate(struct rte_eth_dev *dev,
                const struct rte_flow_action actions[],
                struct rte_flow_error *error)
 {
-       void *meta;
        struct ice_flow_engine *engine;
 
        return ice_flow_process_filter(dev, NULL, attr, pattern, actions,
-                       &engine, &meta, ice_parse_engine_validate, error);
+                       &engine, ice_parse_engine_validate, error);
 }
 
 static struct rte_flow *
@@ -1863,7 +1864,6 @@ ice_flow_create(struct rte_eth_dev *dev,
        struct rte_flow *flow = NULL;
        int ret;
        struct ice_flow_engine *engine = NULL;
-       void *meta;
 
        flow = rte_zmalloc("ice_flow", sizeof(struct rte_flow), 0);
        if (!flow) {
@@ -1874,7 +1874,7 @@ ice_flow_create(struct rte_eth_dev *dev,
        }
 
        ret = ice_flow_process_filter(dev, flow, attr, pattern, actions,
-                       &engine, &meta, ice_parse_engine_create, error);
+                       &engine, ice_parse_engine_create, error);
        if (ret < 0)
                goto free_flow;
        flow->engine = engine;
diff --git a/drivers/net/ice/ice_hash.c b/drivers/net/ice/ice_hash.c
index d891538bd..fc3f33ee1 100644
--- a/drivers/net/ice/ice_hash.c
+++ b/drivers/net/ice/ice_hash.c
@@ -503,12 +503,10 @@ ice_hash_create(struct ice_adapter *ad,
 
 out:
        flow->rule = filter_ptr;
-       rte_free(meta);
        return 0;
 
 error:
        rte_free(filter_ptr);
-       rte_free(meta);
        return -rte_errno;
 }
 
diff --git a/drivers/net/ice/ice_switch_filter.c 
b/drivers/net/ice/ice_switch_filter.c
index 4a9356b31..314a9a096 100644
--- a/drivers/net/ice/ice_switch_filter.c
+++ b/drivers/net/ice/ice_switch_filter.c
@@ -249,13 +249,10 @@ ice_switch_create(struct ice_adapter *ad,
        }
 
        rte_free(list);
-       rte_free(meta);
        return 0;
 
 error:
        rte_free(list);
-       rte_free(meta);
-
        return -rte_errno;
 }
 
-- 
2.13.6

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