*/
#include <rte_malloc.h>
-#include <rte_hash_crc.h>
#include <mlx5_malloc.h>
#include "mlx5_utils.h"
-struct mlx5_hlist *
-mlx5_hlist_create(const char *name, uint32_t size)
-{
- struct mlx5_hlist *h;
- uint32_t act_size;
- uint32_t alloc_size;
- if (!size)
- return NULL;
- /* Align to the next power of 2, 32bits integer is enough now. */
- if (!rte_is_power_of_2(size)) {
- act_size = rte_align32pow2(size);
- DRV_LOG(WARNING, "Size 0x%" PRIX32 " is not power of 2, will "
- "be aligned to 0x%" PRIX32 ".", size, act_size);
- } else {
- act_size = size;
- }
- alloc_size = sizeof(struct mlx5_hlist) +
- sizeof(struct mlx5_hlist_head) * act_size;
- /* Using zmalloc, then no need to initialize the heads. */
- h = mlx5_malloc(MLX5_MEM_ZERO, alloc_size, RTE_CACHE_LINE_SIZE,
- SOCKET_ID_ANY);
- if (!h) {
- DRV_LOG(ERR, "No memory for hash list %s creation",
- name ? name : "None");
- return NULL;
- }
- if (name)
- snprintf(h->name, MLX5_HLIST_NAMESIZE, "%s", name);
- h->table_sz = act_size;
- h->mask = act_size - 1;
- DRV_LOG(DEBUG, "Hash list with %s size 0x%" PRIX32 " is created.",
- h->name, act_size);
- return h;
+/********************* Cache list ************************/
+
+static struct mlx5_cache_entry *
+mlx5_clist_default_create_cb(struct mlx5_cache_list *list,
+ struct mlx5_cache_entry *entry __rte_unused,
+ void *ctx __rte_unused)
+{
+ return mlx5_malloc(MLX5_MEM_ZERO, list->entry_sz, 0, SOCKET_ID_ANY);
}
-struct mlx5_hlist_entry *
-mlx5_hlist_lookup(struct mlx5_hlist *h, uint64_t key)
+static void
+mlx5_clist_default_remove_cb(struct mlx5_cache_list *list __rte_unused,
+ struct mlx5_cache_entry *entry)
{
- uint32_t idx;
- struct mlx5_hlist_head *first;
- struct mlx5_hlist_entry *node;
-
- MLX5_ASSERT(h);
- idx = rte_hash_crc_8byte(key, 0) & h->mask;
- first = &h->heads[idx];
- LIST_FOREACH(node, first, next) {
- if (node->key == key)
- return node;
- }
- return NULL;
+ mlx5_free(entry);
}
int
-mlx5_hlist_insert(struct mlx5_hlist *h, struct mlx5_hlist_entry *entry)
+mlx5_cache_list_init(struct mlx5_cache_list *list, const char *name,
+ uint32_t entry_size, void *ctx,
+ mlx5_cache_create_cb cb_create,
+ mlx5_cache_match_cb cb_match,
+ mlx5_cache_remove_cb cb_remove)
{
- uint32_t idx;
- struct mlx5_hlist_head *first;
- struct mlx5_hlist_entry *node;
-
- MLX5_ASSERT(h && entry);
- idx = rte_hash_crc_8byte(entry->key, 0) & h->mask;
- first = &h->heads[idx];
- /* No need to reuse the lookup function. */
- LIST_FOREACH(node, first, next) {
- if (node->key == entry->key)
- return -EEXIST;
- }
- LIST_INSERT_HEAD(first, entry, next);
+ MLX5_ASSERT(list);
+ if (!cb_match || (!cb_create ^ !cb_remove))
+ return -1;
+ if (name)
+ snprintf(list->name, sizeof(list->name), "%s", name);
+ list->entry_sz = entry_size;
+ list->ctx = ctx;
+ list->cb_create = cb_create ? cb_create : mlx5_clist_default_create_cb;
+ list->cb_match = cb_match;
+ list->cb_remove = cb_remove ? cb_remove : mlx5_clist_default_remove_cb;
+ rte_rwlock_init(&list->lock);
+ DRV_LOG(DEBUG, "Cache list %s initialized.", list->name);
+ LIST_INIT(&list->head);
return 0;
}
-struct mlx5_hlist_entry *
-mlx5_hlist_lookup_ex(struct mlx5_hlist *h, uint64_t key,
- mlx5_hlist_match_callback_fn cb, void *ctx)
+static struct mlx5_cache_entry *
+__cache_lookup(struct mlx5_cache_list *list, void *ctx, bool reuse)
{
- uint32_t idx;
- struct mlx5_hlist_head *first;
- struct mlx5_hlist_entry *node;
-
- MLX5_ASSERT(h && cb && ctx);
- idx = rte_hash_crc_8byte(key, 0) & h->mask;
- first = &h->heads[idx];
- LIST_FOREACH(node, first, next) {
- if (!cb(node, ctx))
- return node;
+ struct mlx5_cache_entry *entry;
+
+ LIST_FOREACH(entry, &list->head, next) {
+ if (list->cb_match(list, entry, ctx))
+ continue;
+ if (reuse) {
+ __atomic_add_fetch(&entry->ref_cnt, 1,
+ __ATOMIC_RELAXED);
+ DRV_LOG(DEBUG, "Cache list %s entry %p ref++: %u.",
+ list->name, (void *)entry, entry->ref_cnt);
+ }
+ break;
}
- return NULL;
+ return entry;
}
-int
-mlx5_hlist_insert_ex(struct mlx5_hlist *h, struct mlx5_hlist_entry *entry,
- mlx5_hlist_match_callback_fn cb, void *ctx)
+static struct mlx5_cache_entry *
+cache_lookup(struct mlx5_cache_list *list, void *ctx, bool reuse)
{
- uint32_t idx;
- struct mlx5_hlist_head *first;
- struct mlx5_hlist_entry *node;
-
- MLX5_ASSERT(h && entry && cb && ctx);
- idx = rte_hash_crc_8byte(entry->key, 0) & h->mask;
- first = &h->heads[idx];
- /* No need to reuse the lookup function. */
- LIST_FOREACH(node, first, next) {
- if (!cb(node, ctx))
- return -EEXIST;
+ struct mlx5_cache_entry *entry;
+
+ rte_rwlock_read_lock(&list->lock);
+ entry = __cache_lookup(list, ctx, reuse);
+ rte_rwlock_read_unlock(&list->lock);
+ return entry;
+}
+
+struct mlx5_cache_entry *
+mlx5_cache_lookup(struct mlx5_cache_list *list, void *ctx)
+{
+ return cache_lookup(list, ctx, false);
+}
+
+struct mlx5_cache_entry *
+mlx5_cache_register(struct mlx5_cache_list *list, void *ctx)
+{
+ struct mlx5_cache_entry *entry;
+ uint32_t prev_gen_cnt = 0;
+
+ MLX5_ASSERT(list);
+ prev_gen_cnt = __atomic_load_n(&list->gen_cnt, __ATOMIC_ACQUIRE);
+ /* Lookup with read lock, reuse if found. */
+ entry = cache_lookup(list, ctx, true);
+ if (entry)
+ return entry;
+ /* Not found, append with write lock - block read from other threads. */
+ rte_rwlock_write_lock(&list->lock);
+ /* If list changed by other threads before lock, search again. */
+ if (prev_gen_cnt != __atomic_load_n(&list->gen_cnt, __ATOMIC_ACQUIRE)) {
+ /* Lookup and reuse w/o read lock. */
+ entry = __cache_lookup(list, ctx, true);
+ if (entry)
+ goto done;
}
- LIST_INSERT_HEAD(first, entry, next);
- return 0;
+ entry = list->cb_create(list, entry, ctx);
+ if (!entry) {
+ DRV_LOG(ERR, "Failed to init cache list %s entry %p.",
+ list->name, (void *)entry);
+ goto done;
+ }
+ entry->ref_cnt = 1;
+ LIST_INSERT_HEAD(&list->head, entry, next);
+ __atomic_add_fetch(&list->gen_cnt, 1, __ATOMIC_RELEASE);
+ __atomic_add_fetch(&list->count, 1, __ATOMIC_ACQUIRE);
+ DRV_LOG(DEBUG, "Cache list %s entry %p new: %u.",
+ list->name, (void *)entry, entry->ref_cnt);
+done:
+ rte_rwlock_write_unlock(&list->lock);
+ return entry;
}
-void
-mlx5_hlist_remove(struct mlx5_hlist *h __rte_unused,
- struct mlx5_hlist_entry *entry)
+int
+mlx5_cache_unregister(struct mlx5_cache_list *list,
+ struct mlx5_cache_entry *entry)
{
+ rte_rwlock_write_lock(&list->lock);
MLX5_ASSERT(entry && entry->next.le_prev);
+ DRV_LOG(DEBUG, "Cache list %s entry %p ref--: %u.",
+ list->name, (void *)entry, entry->ref_cnt);
+ if (--entry->ref_cnt) {
+ rte_rwlock_write_unlock(&list->lock);
+ return 1;
+ }
+ __atomic_add_fetch(&list->gen_cnt, 1, __ATOMIC_ACQUIRE);
+ __atomic_sub_fetch(&list->count, 1, __ATOMIC_ACQUIRE);
LIST_REMOVE(entry, next);
- /* Set to NULL to get rid of removing action for more than once. */
- entry->next.le_prev = NULL;
+ list->cb_remove(list, entry);
+ rte_rwlock_write_unlock(&list->lock);
+ DRV_LOG(DEBUG, "Cache list %s entry %p removed.",
+ list->name, (void *)entry);
+ return 0;
}
void
-mlx5_hlist_destroy(struct mlx5_hlist *h,
- mlx5_hlist_destroy_callback_fn cb, void *ctx)
+mlx5_cache_list_destroy(struct mlx5_cache_list *list)
{
- uint32_t idx;
- struct mlx5_hlist_entry *entry;
-
- MLX5_ASSERT(h);
- for (idx = 0; idx < h->table_sz; ++idx) {
- /* no LIST_FOREACH_SAFE, using while instead */
- while (!LIST_EMPTY(&h->heads[idx])) {
- entry = LIST_FIRST(&h->heads[idx]);
- LIST_REMOVE(entry, next);
- /*
- * The owner of whole element which contains data entry
- * is the user, so it's the user's duty to do the clean
- * up and the free work because someone may not put the
- * hlist entry at the beginning(suggested to locate at
- * the beginning). Or else the default free function
- * will be used.
- */
- if (cb)
- cb(entry, ctx);
- else
- mlx5_free(entry);
- }
+ struct mlx5_cache_entry *entry;
+
+ MLX5_ASSERT(list);
+ /* no LIST_FOREACH_SAFE, using while instead */
+ while (!LIST_EMPTY(&list->head)) {
+ entry = LIST_FIRST(&list->head);
+ LIST_REMOVE(entry, next);
+ list->cb_remove(list, entry);
+ DRV_LOG(DEBUG, "Cache list %s entry %p destroyed.",
+ list->name, (void *)entry);
}
- mlx5_free(h);
+ memset(list, 0, sizeof(*list));
}
+uint32_t
+mlx5_cache_list_get_entry_num(struct mlx5_cache_list *list)
+{
+ MLX5_ASSERT(list);
+ return __atomic_load_n(&list->count, __ATOMIC_RELAXED);
+}
+
+/********************* Indexed pool **********************/
+
static inline void
mlx5_ipool_lock(struct mlx5_indexed_pool *pool)
{
struct mlx5_indexed_pool *pool;
uint32_t i;
- if (!cfg || !cfg->size || (!cfg->malloc ^ !cfg->free) ||
+ if (!cfg || (!cfg->malloc ^ !cfg->free) ||
(cfg->trunk_size && ((cfg->trunk_size & (cfg->trunk_size - 1)) ||
((__builtin_ffs(cfg->trunk_size) + TRUNK_IDX_BITS) > 32))))
return NULL;
MLX5_ASSERT(iidx < mlx5_trunk_size_get(pool, trunk->idx));
rte_bitmap_clear(trunk->bmp, iidx);
p = &trunk->data[iidx * pool->cfg.size];
+ /*
+ * The ipool index should grow continually from small to big,
+ * some features as metering only accept limited bits of index.
+ * Random index with MSB set may be rejected.
+ */
iidx += mlx5_trunk_idx_offset_get(pool, trunk->idx);
iidx += 1; /* non-zero index. */
trunk->free--;
{
void *entry = mlx5_ipool_malloc(pool, idx);
- if (entry)
+ if (entry && pool->cfg.size)
memset(entry, 0, pool->cfg.size);
return entry;
}
git.droids-corp.org / dpdk.git / blobdiff