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38 #include <rte_mempool.h>
39 #include <rte_errno.h>
42 /* indirect jump table to support external memory pools. */
43 struct rte_mempool_ops_table rte_mempool_ops_table = {
44 .sl = RTE_SPINLOCK_INITIALIZER,
48 /* add a new ops struct in rte_mempool_ops_table, return its index. */
50 rte_mempool_register_ops(const struct rte_mempool_ops *h)
52 struct rte_mempool_ops *ops;
55 rte_spinlock_lock(&rte_mempool_ops_table.sl);
57 if (rte_mempool_ops_table.num_ops >=
58 RTE_MEMPOOL_MAX_OPS_IDX) {
59 rte_spinlock_unlock(&rte_mempool_ops_table.sl);
61 "Maximum number of mempool ops structs exceeded\n");
65 if (h->alloc == NULL || h->enqueue == NULL ||
66 h->dequeue == NULL || h->get_count == NULL) {
67 rte_spinlock_unlock(&rte_mempool_ops_table.sl);
69 "Missing callback while registering mempool ops\n");
73 if (strlen(h->name) >= sizeof(ops->name) - 1) {
74 rte_spinlock_unlock(&rte_mempool_ops_table.sl);
75 RTE_LOG(DEBUG, EAL, "%s(): mempool_ops <%s>: name too long\n",
81 ops_index = rte_mempool_ops_table.num_ops++;
82 ops = &rte_mempool_ops_table.ops[ops_index];
83 snprintf(ops->name, sizeof(ops->name), "%s", h->name);
84 ops->alloc = h->alloc;
86 ops->enqueue = h->enqueue;
87 ops->dequeue = h->dequeue;
88 ops->get_count = h->get_count;
89 ops->get_capabilities = h->get_capabilities;
91 rte_spinlock_unlock(&rte_mempool_ops_table.sl);
96 /* wrapper to allocate an external mempool's private (pool) data. */
98 rte_mempool_ops_alloc(struct rte_mempool *mp)
100 struct rte_mempool_ops *ops;
102 ops = rte_mempool_get_ops(mp->ops_index);
103 return ops->alloc(mp);
106 /* wrapper to free an external pool ops. */
108 rte_mempool_ops_free(struct rte_mempool *mp)
110 struct rte_mempool_ops *ops;
112 ops = rte_mempool_get_ops(mp->ops_index);
113 if (ops->free == NULL)
118 /* wrapper to get available objects in an external mempool. */
120 rte_mempool_ops_get_count(const struct rte_mempool *mp)
122 struct rte_mempool_ops *ops;
124 ops = rte_mempool_get_ops(mp->ops_index);
125 return ops->get_count(mp);
128 /* wrapper to get external mempool capabilities. */
130 rte_mempool_ops_get_capabilities(const struct rte_mempool *mp,
133 struct rte_mempool_ops *ops;
135 ops = rte_mempool_get_ops(mp->ops_index);
137 RTE_FUNC_PTR_OR_ERR_RET(ops->get_capabilities, -ENOTSUP);
138 return ops->get_capabilities(mp, flags);
141 /* sets mempool ops previously registered by rte_mempool_register_ops. */
143 rte_mempool_set_ops_byname(struct rte_mempool *mp, const char *name,
146 struct rte_mempool_ops *ops = NULL;
149 /* too late, the mempool is already populated. */
150 if (mp->flags & MEMPOOL_F_POOL_CREATED)
153 for (i = 0; i < rte_mempool_ops_table.num_ops; i++) {
155 rte_mempool_ops_table.ops[i].name)) {
156 ops = &rte_mempool_ops_table.ops[i];
165 mp->pool_config = pool_config;