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net/mlx5: use C11 atomics for flow tables

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The rte_atomic API is deprecated and needs to be replaced with
C11 atomic builtins. Use the relaxed ordering for RTE flow tables.
Enforce Acquire/Release model for managing DevX pools.

Signed-off-by: Alexander Kozyrev <akozyrev@nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
This commit is contained in:
Alexander Kozyrev 2020-10-27 15:28:24 +00:00 committed by Ferruh Yigit
parent b5c8b3e70c
commit cf7d1995b9
3 changed files with 78 additions and 69 deletions
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7
drivers/net/mlx5/mlx5.h
View File

@ -402,10 +402,7 @@ TAILQ_HEAD(mlx5_counters, mlx5_flow_counter);
struct mlx5_flow_counter_pool {
TAILQ_ENTRY(mlx5_flow_counter_pool) next;
struct mlx5_counters counters[2]; /* Free counter list. */
union {
struct mlx5_devx_obj *min_dcs;
rte_atomic64_t a64_dcs;
};
/* The devx object of the minimum counter ID. */
uint64_t time_of_last_age_check;
/* System time (from rte_rdtsc()) read in the last aging check. */
@ -464,7 +461,7 @@ struct mlx5_flow_counter_mng {
/* Default miss action resource structure. */
struct mlx5_flow_default_miss_resource {
void *action; /* Pointer to the rdma-core action. */
rte_atomic32_t refcnt; /* Default miss action reference counter. */
uint32_t refcnt; /* Default miss action reference counter. */
};
#define MLX5_AGE_EVENT_NEW 1
@ -515,7 +512,7 @@ union mlx5_flow_tbl_key {
/* Table structure. */
struct mlx5_flow_tbl_resource {
void *obj; /**< Pointer to DR table object. */
rte_atomic32_t refcnt; /**< Reference counter. */
uint32_t refcnt; /**< Reference counter. */
};
#define MLX5_MAX_TABLES UINT16_MAX

15
drivers/net/mlx5/mlx5_flow.h
View File

@ -11,7 +11,6 @@
#include <stdint.h>
#include <string.h>
#include <rte_atomic.h>
#include <rte_alarm.h>
#include <rte_mtr.h>
@ -396,7 +395,7 @@ struct mlx5_flow_dv_matcher {
/**< Pointer to the next element. */
struct mlx5_flow_tbl_resource *tbl;
/**< Pointer to the table(group) the matcher associated with. */
rte_atomic32_t refcnt; /**< Reference counter. */
uint32_t refcnt; /**< Reference counter. */
void *matcher_object; /**< Pointer to DV matcher */
uint16_t crc; /**< CRC of key. */
uint16_t priority; /**< Priority of matcher. */
@ -421,7 +420,7 @@ union mlx5_flow_encap_decap_key {
struct mlx5_flow_dv_encap_decap_resource {
struct mlx5_hlist_entry entry;
/* Pointer to next element. */
rte_atomic32_t refcnt; /**< Reference counter. */
uint32_t refcnt; /**< Reference counter. */
void *action;
/**< Encap/decap action object. */
uint8_t buf[MLX5_ENCAP_MAX_LEN];
@ -438,7 +437,7 @@ struct mlx5_flow_dv_tag_resource {
/**< hash list entry for tag resource, tag value as the key. */
void *action;
/**< Tag action object. */
rte_atomic32_t refcnt; /**< Reference counter. */
uint32_t refcnt; /**< Reference counter. */
uint32_t idx; /**< Index for the index memory pool. */
};
@ -459,7 +458,7 @@ struct mlx5_flow_dv_tag_resource {
struct mlx5_flow_dv_modify_hdr_resource {
struct mlx5_hlist_entry entry;
/* Pointer to next element. */
rte_atomic32_t refcnt; /**< Reference counter. */
uint32_t refcnt; /**< Reference counter. */
void *action;
/**< Modify header action object. */
uint8_t ft_type; /**< Flow table type, Rx or Tx. */
@ -482,7 +481,7 @@ union mlx5_flow_modify_hdr_key {
/* Jump action resource structure. */
struct mlx5_flow_dv_jump_tbl_resource {
rte_atomic32_t refcnt; /**< Reference counter. */
uint32_t refcnt; /**< Reference counter. */
uint8_t ft_type; /**< Flow table type, Rx or Tx. */
void *action; /**< Pointer to the rdma core action. */
};
@ -491,7 +490,7 @@ struct mlx5_flow_dv_jump_tbl_resource {
struct mlx5_flow_dv_port_id_action_resource {
ILIST_ENTRY(uint32_t)next;
/* Pointer to next element. */
rte_atomic32_t refcnt; /**< Reference counter. */
uint32_t refcnt; /**< Reference counter. */
void *action;
/**< Action object. */
uint32_t port_id; /**< Port ID value. */
@ -501,7 +500,7 @@ struct mlx5_flow_dv_port_id_action_resource {
struct mlx5_flow_dv_push_vlan_action_resource {
ILIST_ENTRY(uint32_t)next;
/* Pointer to next element. */
rte_atomic32_t refcnt; /**< Reference counter. */
uint32_t refcnt; /**< Reference counter. */
void *action; /**< Action object. */
uint8_t ft_type; /**< Flow table type, Rx, Tx or FDB. */
rte_be32_t vlan_tag; /**< VLAN tag value. */

123
drivers/net/mlx5/mlx5_flow_dv.c
View File

@ -2873,8 +2873,10 @@ flow_dv_encap_decap_resource_register
struct mlx5_flow_dv_encap_decap_resource, entry);
DRV_LOG(DEBUG, "encap/decap resource %p: refcnt %d++",
(void *)cache_resource,
rte_atomic32_read(&cache_resource->refcnt));
rte_atomic32_inc(&cache_resource->refcnt);
__atomic_load_n(&cache_resource->refcnt,
__ATOMIC_RELAXED));
__atomic_fetch_add(&cache_resource->refcnt, 1,
__ATOMIC_RELAXED);
dev_flow->handle->dvh.rix_encap_decap = cache_resource->idx;
dev_flow->dv.encap_decap = cache_resource;
return 0;
@ -2897,8 +2899,7 @@ flow_dv_encap_decap_resource_register
RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
NULL, "cannot create action");
}
rte_atomic32_init(&cache_resource->refcnt);
rte_atomic32_inc(&cache_resource->refcnt);
__atomic_store_n(&cache_resource->refcnt, 1, __ATOMIC_RELAXED);
if (mlx5_hlist_insert_ex(sh->encaps_decaps, &cache_resource->entry,
flow_dv_encap_decap_resource_match,
(void *)cache_resource)) {
@ -2913,7 +2914,7 @@ flow_dv_encap_decap_resource_register
dev_flow->dv.encap_decap = cache_resource;
DRV_LOG(DEBUG, "new encap/decap resource %p: refcnt %d++",
(void *)cache_resource,
rte_atomic32_read(&cache_resource->refcnt));
__atomic_load_n(&cache_resource->refcnt, __ATOMIC_RELAXED));
return 0;
}
@ -2944,7 +2945,7 @@ flow_dv_jump_tbl_resource_register
int cnt, ret;
MLX5_ASSERT(tbl);
cnt = rte_atomic32_read(&tbl_data->jump.refcnt);
cnt = __atomic_load_n(&tbl_data->jump.refcnt, __ATOMIC_ACQUIRE);
if (!cnt) {
ret = mlx5_flow_os_create_flow_action_dest_flow_tbl
(tbl->obj, &tbl_data->jump.action);
@ -2961,7 +2962,7 @@ flow_dv_jump_tbl_resource_register
DRV_LOG(DEBUG, "existed jump table resource %p: refcnt %d++",
(void *)&tbl_data->jump, cnt);
}
rte_atomic32_inc(&tbl_data->jump.refcnt);
__atomic_fetch_add(&tbl_data->jump.refcnt, 1, __ATOMIC_RELEASE);
dev_flow->handle->rix_jump = tbl_data->idx;
dev_flow->dv.jump = &tbl_data->jump;
return 0;
@ -2986,7 +2987,7 @@ flow_dv_default_miss_resource_register(struct rte_eth_dev *dev,
struct mlx5_dev_ctx_shared *sh = priv->sh;
struct mlx5_flow_default_miss_resource *cache_resource =
&sh->default_miss;
int cnt = rte_atomic32_read(&cache_resource->refcnt);
int cnt = __atomic_load_n(&cache_resource->refcnt, __ATOMIC_ACQUIRE);
if (!cnt) {
MLX5_ASSERT(cache_resource->action);
@ -2999,7 +3000,7 @@ flow_dv_default_miss_resource_register(struct rte_eth_dev *dev,
DRV_LOG(DEBUG, "new default miss resource %p: refcnt %d++",
(void *)cache_resource->action, cnt);
}
rte_atomic32_inc(&cache_resource->refcnt);
__atomic_fetch_add(&cache_resource->refcnt, 1, __ATOMIC_RELEASE);
return 0;
}
@ -3038,8 +3039,10 @@ flow_dv_port_id_action_resource_register
DRV_LOG(DEBUG, "port id action resource resource %p: "
"refcnt %d++",
(void *)cache_resource,
rte_atomic32_read(&cache_resource->refcnt));
rte_atomic32_inc(&cache_resource->refcnt);
__atomic_load_n(&cache_resource->refcnt,
__ATOMIC_RELAXED));
__atomic_fetch_add(&cache_resource->refcnt, 1,
__ATOMIC_RELAXED);
dev_flow->handle->rix_port_id_action = idx;
dev_flow->dv.port_id_action = cache_resource;
return 0;
@ -3062,15 +3065,14 @@ flow_dv_port_id_action_resource_register
RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
NULL, "cannot create action");
}
rte_atomic32_init(&cache_resource->refcnt);
rte_atomic32_inc(&cache_resource->refcnt);
__atomic_store_n(&cache_resource->refcnt, 1, __ATOMIC_RELAXED);
ILIST_INSERT(sh->ipool[MLX5_IPOOL_PORT_ID], &sh->port_id_action_list,
dev_flow->handle->rix_port_id_action, cache_resource,
next);
dev_flow->dv.port_id_action = cache_resource;
DRV_LOG(DEBUG, "new port id action resource %p: refcnt %d++",
(void *)cache_resource,
rte_atomic32_read(&cache_resource->refcnt));
__atomic_load_n(&cache_resource->refcnt, __ATOMIC_RELAXED));
return 0;
}
@ -3111,8 +3113,10 @@ flow_dv_push_vlan_action_resource_register
DRV_LOG(DEBUG, "push-VLAN action resource resource %p: "
"refcnt %d++",
(void *)cache_resource,
rte_atomic32_read(&cache_resource->refcnt));
rte_atomic32_inc(&cache_resource->refcnt);
__atomic_load_n(&cache_resource->refcnt,
__ATOMIC_RELAXED));
__atomic_fetch_add(&cache_resource->refcnt, 1,
__ATOMIC_RELAXED);
dev_flow->handle->dvh.rix_push_vlan = idx;
dev_flow->dv.push_vlan_res = cache_resource;
return 0;
@ -3141,8 +3145,7 @@ flow_dv_push_vlan_action_resource_register
RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
NULL, "cannot create action");
}
rte_atomic32_init(&cache_resource->refcnt);
rte_atomic32_inc(&cache_resource->refcnt);
__atomic_store_n(&cache_resource->refcnt, 1, __ATOMIC_RELAXED);
ILIST_INSERT(sh->ipool[MLX5_IPOOL_PUSH_VLAN],
&sh->push_vlan_action_list,
dev_flow->handle->dvh.rix_push_vlan,
@ -3150,7 +3153,7 @@ flow_dv_push_vlan_action_resource_register
dev_flow->dv.push_vlan_res = cache_resource;
DRV_LOG(DEBUG, "new push vlan action resource %p: refcnt %d++",
(void *)cache_resource,
rte_atomic32_read(&cache_resource->refcnt));
__atomic_load_n(&cache_resource->refcnt, __ATOMIC_RELAXED));
return 0;
}
/**
@ -4550,8 +4553,10 @@ flow_dv_modify_hdr_resource_register
entry);
DRV_LOG(DEBUG, "modify-header resource %p: refcnt %d++",
(void *)cache_resource,
rte_atomic32_read(&cache_resource->refcnt));
rte_atomic32_inc(&cache_resource->refcnt);
__atomic_load_n(&cache_resource->refcnt,
__ATOMIC_RELAXED));
__atomic_fetch_add(&cache_resource->refcnt, 1,
__ATOMIC_RELAXED);
dev_flow->handle->dvh.modify_hdr = cache_resource;
return 0;
@ -4575,8 +4580,7 @@ flow_dv_modify_hdr_resource_register
RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
NULL, "cannot create action");
}
rte_atomic32_init(&cache_resource->refcnt);
rte_atomic32_inc(&cache_resource->refcnt);
__atomic_store_n(&cache_resource->refcnt, 1, __ATOMIC_RELAXED);
if (mlx5_hlist_insert_ex(sh->modify_cmds, &cache_resource->entry,
flow_dv_modify_hdr_resource_match,
(void *)cache_resource)) {
@ -4590,7 +4594,7 @@ flow_dv_modify_hdr_resource_register
dev_flow->handle->dvh.modify_hdr = cache_resource;
DRV_LOG(DEBUG, "new modify-header resource %p: refcnt %d++",
(void *)cache_resource,
rte_atomic32_read(&cache_resource->refcnt));
__atomic_load_n(&cache_resource->refcnt, __ATOMIC_RELAXED));
return 0;
}
@ -8021,7 +8025,7 @@ flow_dv_tbl_resource_get(struct rte_eth_dev *dev,
tbl_data = container_of(pos, struct mlx5_flow_tbl_data_entry,
entry);
tbl = &tbl_data->tbl;
rte_atomic32_inc(&tbl->refcnt);
__atomic_fetch_add(&tbl->refcnt, 1, __ATOMIC_RELAXED);
return tbl;
}
tbl_data = mlx5_ipool_zmalloc(sh->ipool[MLX5_IPOOL_JUMP], &idx);
@ -8056,9 +8060,9 @@ flow_dv_tbl_resource_get(struct rte_eth_dev *dev,
* No multi-threads now, but still better to initialize the reference
* count before insert it into the hash list.
*/
rte_atomic32_init(&tbl->refcnt);
__atomic_store_n(&tbl->refcnt, 0, __ATOMIC_RELAXED);
/* Jump action reference count is initialized here. */
rte_atomic32_init(&tbl_data->jump.refcnt);
__atomic_store_n(&tbl_data->jump.refcnt, 0, __ATOMIC_RELAXED);
pos->key = table_key.v64;
ret = mlx5_hlist_insert(sh->flow_tbls, pos);
if (ret < 0) {
@ -8068,7 +8072,7 @@ flow_dv_tbl_resource_get(struct rte_eth_dev *dev,
mlx5_flow_os_destroy_flow_tbl(tbl->obj);
mlx5_ipool_free(sh->ipool[MLX5_IPOOL_JUMP], idx);
}
rte_atomic32_inc(&tbl->refcnt);
__atomic_fetch_add(&tbl->refcnt, 1, __ATOMIC_RELAXED);
return tbl;
}
@ -8094,7 +8098,7 @@ flow_dv_tbl_resource_release(struct rte_eth_dev *dev,
if (!tbl)
return 0;
if (rte_atomic32_dec_and_test(&tbl->refcnt)) {
if (__atomic_sub_fetch(&tbl->refcnt, 1, __ATOMIC_RELAXED) == 0) {
struct mlx5_hlist_entry *pos = &tbl_data->entry;
mlx5_flow_os_destroy_flow_tbl(tbl->obj);
@ -8197,8 +8201,10 @@ flow_dv_matcher_register(struct rte_eth_dev *dev,
cache_matcher->priority,
key->direction ? "tx" : "rx",
(void *)cache_matcher,
rte_atomic32_read(&cache_matcher->refcnt));
rte_atomic32_inc(&cache_matcher->refcnt);
__atomic_load_n(&cache_matcher->refcnt,
__ATOMIC_RELAXED));
__atomic_fetch_add(&cache_matcher->refcnt, 1,
__ATOMIC_RELAXED);
dev_flow->handle->dvh.matcher = cache_matcher;
/* old matcher should not make the table ref++. */
flow_dv_tbl_resource_release(dev, tbl);
@ -8233,16 +8239,15 @@ flow_dv_matcher_register(struct rte_eth_dev *dev,
}
/* Save the table information */
cache_matcher->tbl = tbl;
rte_atomic32_init(&cache_matcher->refcnt);
/* only matcher ref++, table ref++ already done above in get API. */
rte_atomic32_inc(&cache_matcher->refcnt);
__atomic_store_n(&cache_matcher->refcnt, 1, __ATOMIC_RELAXED);
LIST_INSERT_HEAD(&tbl_data->matchers, cache_matcher, next);
dev_flow->handle->dvh.matcher = cache_matcher;
DRV_LOG(DEBUG, "%s group %u priority %hd new %s matcher %p: refcnt %d",
key->domain ? "FDB" : "NIC", key->table_id,
cache_matcher->priority,
key->direction ? "tx" : "rx", (void *)cache_matcher,
rte_atomic32_read(&cache_matcher->refcnt));
__atomic_load_n(&cache_matcher->refcnt, __ATOMIC_RELAXED));
return 0;
}
@ -8279,12 +8284,14 @@ flow_dv_tag_resource_register
if (entry) {
cache_resource = container_of
(entry, struct mlx5_flow_dv_tag_resource, entry);
rte_atomic32_inc(&cache_resource->refcnt);
__atomic_fetch_add(&cache_resource->refcnt, 1,
__ATOMIC_RELAXED);
dev_flow->handle->dvh.rix_tag = cache_resource->idx;
dev_flow->dv.tag_resource = cache_resource;
DRV_LOG(DEBUG, "cached tag resource %p: refcnt now %d++",
(void *)cache_resource,
rte_atomic32_read(&cache_resource->refcnt));
__atomic_load_n(&cache_resource->refcnt,
__ATOMIC_RELAXED));
return 0;
}
/* Register new resource. */
@ -8303,8 +8310,7 @@ flow_dv_tag_resource_register
RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
NULL, "cannot create action");
}
rte_atomic32_init(&cache_resource->refcnt);
rte_atomic32_inc(&cache_resource->refcnt);
__atomic_store_n(&cache_resource->refcnt, 1, __ATOMIC_RELAXED);
if (mlx5_hlist_insert(sh->tag_table, &cache_resource->entry)) {
mlx5_flow_os_destroy_flow_action(cache_resource->action);
mlx5_free(cache_resource);
@ -8315,7 +8321,7 @@ flow_dv_tag_resource_register
dev_flow->dv.tag_resource = cache_resource;
DRV_LOG(DEBUG, "new tag resource %p: refcnt now %d++",
(void *)cache_resource,
rte_atomic32_read(&cache_resource->refcnt));
__atomic_load_n(&cache_resource->refcnt, __ATOMIC_RELAXED));
return 0;
}
@ -8343,8 +8349,8 @@ flow_dv_tag_release(struct rte_eth_dev *dev,
return 0;
DRV_LOG(DEBUG, "port %u tag %p: refcnt %d--",
dev->data->port_id, (void *)tag,
rte_atomic32_read(&tag->refcnt));
if (rte_atomic32_dec_and_test(&tag->refcnt)) {
__atomic_load_n(&tag->refcnt, __ATOMIC_RELAXED));
if (__atomic_sub_fetch(&tag->refcnt, 1, __ATOMIC_RELAXED) == 0) {
claim_zero(mlx5_flow_os_destroy_flow_action(tag->action));
mlx5_hlist_remove(sh->tag_table, &tag->entry);
DRV_LOG(DEBUG, "port %u tag %p: removed",
@ -10463,8 +10469,8 @@ flow_dv_matcher_release(struct rte_eth_dev *dev,
MLX5_ASSERT(matcher->matcher_object);
DRV_LOG(DEBUG, "port %u matcher %p: refcnt %d--",
dev->data->port_id, (void *)matcher,
rte_atomic32_read(&matcher->refcnt));
if (rte_atomic32_dec_and_test(&matcher->refcnt)) {
__atomic_load_n(&matcher->refcnt, __ATOMIC_RELAXED));
if (__atomic_sub_fetch(&matcher->refcnt, 1, __ATOMIC_RELAXED) == 0) {
claim_zero(mlx5_flow_os_destroy_flow_matcher
(matcher->matcher_object));
LIST_REMOVE(matcher, next);
@ -10504,8 +10510,9 @@ flow_dv_encap_decap_resource_release(struct rte_eth_dev *dev,
MLX5_ASSERT(cache_resource->action);
DRV_LOG(DEBUG, "encap/decap resource %p: refcnt %d--",
(void *)cache_resource,
rte_atomic32_read(&cache_resource->refcnt));
if (rte_atomic32_dec_and_test(&cache_resource->refcnt)) {
__atomic_load_n(&cache_resource->refcnt, __ATOMIC_RELAXED));
if (__atomic_sub_fetch(&cache_resource->refcnt, 1,
__ATOMIC_RELAXED) == 0) {
claim_zero(mlx5_flow_os_destroy_flow_action
(cache_resource->action));
mlx5_hlist_remove(priv->sh->encaps_decaps,
@ -10545,8 +10552,9 @@ flow_dv_jump_tbl_resource_release(struct rte_eth_dev *dev,
MLX5_ASSERT(cache_resource->action);
DRV_LOG(DEBUG, "jump table resource %p: refcnt %d--",
(void *)cache_resource,
rte_atomic32_read(&cache_resource->refcnt));
if (rte_atomic32_dec_and_test(&cache_resource->refcnt)) {
__atomic_load_n(&cache_resource->refcnt, __ATOMIC_RELAXED));
if (__atomic_sub_fetch(&cache_resource->refcnt, 1,
__ATOMIC_RELAXED) == 0) {
claim_zero(mlx5_flow_os_destroy_flow_action
(cache_resource->action));
/* jump action memory free is inside the table release. */
@ -10577,8 +10585,10 @@ flow_dv_default_miss_resource_release(struct rte_eth_dev *dev)
MLX5_ASSERT(cache_resource->action);
DRV_LOG(DEBUG, "default miss resource %p: refcnt %d--",
(void *)cache_resource->action,
rte_atomic32_read(&cache_resource->refcnt));
if (rte_atomic32_dec_and_test(&cache_resource->refcnt)) {
__atomic_load_n(&cache_resource->refcnt,
__ATOMIC_RELAXED));
if (__atomic_sub_fetch(&cache_resource->refcnt, 1,
__ATOMIC_RELAXED) == 0) {
claim_zero(mlx5_glue->destroy_flow_action
(cache_resource->action));
DRV_LOG(DEBUG, "default miss resource %p: removed",
@ -10610,8 +10620,9 @@ flow_dv_modify_hdr_resource_release(struct rte_eth_dev *dev,
MLX5_ASSERT(cache_resource->action);
DRV_LOG(DEBUG, "modify-header resource %p: refcnt %d--",
(void *)cache_resource,
rte_atomic32_read(&cache_resource->refcnt));
if (rte_atomic32_dec_and_test(&cache_resource->refcnt)) {
__atomic_load_n(&cache_resource->refcnt, __ATOMIC_RELAXED));
if (__atomic_sub_fetch(&cache_resource->refcnt, 1,
__ATOMIC_RELAXED) == 0) {
claim_zero(mlx5_flow_os_destroy_flow_action
(cache_resource->action));
mlx5_hlist_remove(priv->sh->modify_cmds,
@ -10650,8 +10661,9 @@ flow_dv_port_id_action_resource_release(struct rte_eth_dev *dev,
MLX5_ASSERT(cache_resource->action);
DRV_LOG(DEBUG, "port ID action resource %p: refcnt %d--",
(void *)cache_resource,
rte_atomic32_read(&cache_resource->refcnt));
if (rte_atomic32_dec_and_test(&cache_resource->refcnt)) {
__atomic_load_n(&cache_resource->refcnt, __ATOMIC_RELAXED));
if (__atomic_sub_fetch(&cache_resource->refcnt, 1,
__ATOMIC_RELAXED) == 0) {
claim_zero(mlx5_flow_os_destroy_flow_action
(cache_resource->action));
ILIST_REMOVE(priv->sh->ipool[MLX5_IPOOL_PORT_ID],
@ -10691,8 +10703,9 @@ flow_dv_push_vlan_action_resource_release(struct rte_eth_dev *dev,
MLX5_ASSERT(cache_resource->action);
DRV_LOG(DEBUG, "push VLAN action resource %p: refcnt %d--",
(void *)cache_resource,
rte_atomic32_read(&cache_resource->refcnt));
if (rte_atomic32_dec_and_test(&cache_resource->refcnt)) {
__atomic_load_n(&cache_resource->refcnt, __ATOMIC_RELAXED));
if (__atomic_sub_fetch(&cache_resource->refcnt, 1,
__ATOMIC_RELAXED) == 0) {
claim_zero(mlx5_flow_os_destroy_flow_action
(cache_resource->action));
ILIST_REMOVE(priv->sh->ipool[MLX5_IPOOL_PUSH_VLAN],