Hi, Qi On 03/03, Qi Zhang wrote: >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. > >In a validate opertion, a meta is not necessary be created during >parser, so NULL will be parsed to low level engine and all engine's >parse_pattern_action need to be modified properly. > >The the patch also fix a potentional memory leak in
s/fix/fixes >ice_parse_engine_validate, since meta may not be freed. > >Fixes: 4e27d3ed02bd ("net/ice: fix flow API framework") >Cc: sta...@dpdk.org > >Signed-off-by: Qi Zhang <qi.z.zh...@intel.com> >--- > >v2: >- remove meta free to low level engine >- allow parse meta = NULL to parse_pattern_action. > > drivers/net/ice/ice_fdir_filter.c | 3 ++- > drivers/net/ice/ice_generic_flow.c | 24 ++++++++++-------------- > drivers/net/ice/ice_hash.c | 13 +++++++------ > drivers/net/ice/ice_switch_filter.c | 14 +++++++------- > 4 files changed, 26 insertions(+), 28 deletions(-) > >diff --git a/drivers/net/ice/ice_fdir_filter.c >b/drivers/net/ice/ice_fdir_filter.c >index 5a791610f..6342b560c 100644 >--- a/drivers/net/ice/ice_fdir_filter.c >+++ b/drivers/net/ice/ice_fdir_filter.c >@@ -1966,7 +1966,8 @@ ice_fdir_parse(struct ice_adapter *ad, > if (ret) > goto error; > >- *meta = filter; >+ if (meta) >+ *meta = filter; > error: > rte_free(item); > return ret; >diff --git a/drivers/net/ice/ice_generic_flow.c >b/drivers/net/ice/ice_generic_flow.c >index 38ac799d8..6bcf28de8 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 +1736,7 @@ ice_parse_engine_create(struct ice_adapter *ad, > continue; > } > >- ret = engine->create(ad, flow, *meta, error); >+ ret = engine->create(ad, flow, meta, error); > if (ret == 0) > return engine; > else if (ret == -EEXIST) >@@ -1752,7 +1751,6 @@ 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; >@@ -1763,12 +1761,13 @@ ice_parse_engine_validate(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, NULL, error) < 0) > continue; > > engine = parser_node->parser->engine; > break; > } >+ Irrelevant change. > return engine; > } > >@@ -1779,7 +1778,6 @@ 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 +1812,7 @@ 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 +1820,11 @@ 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 +1843,10 @@ 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 +1860,6 @@ 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 +1870,7 @@ 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..b37da9920 100644 >--- a/drivers/net/ice/ice_hash.c >+++ b/drivers/net/ice/ice_hash.c >@@ -432,14 +432,17 @@ ice_hash_parse_pattern_action(__rte_unused struct >ice_adapter *ad, > goto error; > > /* Save protocol header to rss_meta. */ >- *meta = rss_meta_ptr; >- ((struct rss_meta *)*meta)->pkt_hdr = ((struct rss_type_match_hdr *) >+ rss_meta_ptr->pkt_hdr = ((struct rss_type_match_hdr *) > (pattern_match_item->meta))->hdr_mask; > > /* Check rss action. */ >- ret = ice_hash_parse_action(pattern_match_item, actions, meta, error); >+ ret = ice_hash_parse_action(pattern_match_item, actions, >+ (void **)&rss_meta_ptr, error); >+ > error: >- if (ret) >+ if (!ret && meta) >+ *meta = rss_meta_ptr; >+ else > rte_free(rss_meta_ptr); > rte_free(pattern_match_item); > >@@ -503,12 +506,10 @@ 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..8a2ba8aa6 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; > } > >@@ -1088,10 +1085,13 @@ ice_switch_parse_pattern_action(struct ice_adapter *ad, > "Invalid input action"); > goto error; > } >- *meta = sw_meta_ptr; >- ((struct sw_meta *)*meta)->list = list; >- ((struct sw_meta *)*meta)->lkups_num = lkups_num; >- ((struct sw_meta *)*meta)->rule_info = rule_info; >+ >+ if (meta) { >+ *meta = sw_meta_ptr; >+ ((struct sw_meta *)*meta)->list = list; >+ ((struct sw_meta *)*meta)->lkups_num = lkups_num; >+ ((struct sw_meta *)*meta)->rule_info = rule_info; >+ } If meta is NULL for ice_parse_engine_validate case, do we need free sw_meta_ptr explicitly in switch like we free(rss_meta_ptr) in hash? And also free the list? And for case meta is not NULL, who is responsible for freeing it eventually? Thanks, Xiaolong > rte_free(pattern_match_item); > > return 0; >-- >2.13.6 >