-/*
- * Simple example of custom mempool structure. Holds pointers to all the
- * elements which are simply malloc'd in this example.
- */
-struct custom_mempool {
- rte_spinlock_t lock;
- unsigned count;
- unsigned size;
- void *elts[];
-};
-
-/*
- * Loop through all the element pointers and allocate a chunk of memory, then
- * insert that memory into the ring.
- */
-static int
-custom_mempool_alloc(struct rte_mempool *mp)
-{
- struct custom_mempool *cm;
-
- cm = rte_zmalloc("custom_mempool",
- sizeof(struct custom_mempool) + mp->size * sizeof(void *), 0);
- if (cm == NULL)
- return -ENOMEM;
-
- rte_spinlock_init(&cm->lock);
- cm->count = 0;
- cm->size = mp->size;
- mp->pool_data = cm;
- return 0;
-}
-
-static void
-custom_mempool_free(struct rte_mempool *mp)
-{
- rte_free((void *)(mp->pool_data));
-}
-
-static int
-custom_mempool_enqueue(struct rte_mempool *mp, void * const *obj_table,
- unsigned n)
-{
- struct custom_mempool *cm = (struct custom_mempool *)(mp->pool_data);
- int ret = 0;
-
- rte_spinlock_lock(&cm->lock);
- if (cm->count + n > cm->size) {
- ret = -ENOBUFS;
- } else {
- memcpy(&cm->elts[cm->count], obj_table, sizeof(void *) * n);
- cm->count += n;
- }
- rte_spinlock_unlock(&cm->lock);
- return ret;
-}
-
-
-static int
-custom_mempool_dequeue(struct rte_mempool *mp, void **obj_table, unsigned n)
-{
- struct custom_mempool *cm = (struct custom_mempool *)(mp->pool_data);
- int ret = 0;
-
- rte_spinlock_lock(&cm->lock);
- if (n > cm->count) {
- ret = -ENOENT;
- } else {
- cm->count -= n;
- memcpy(obj_table, &cm->elts[cm->count], sizeof(void *) * n);
- }
- rte_spinlock_unlock(&cm->lock);
- return ret;
-}
-
-static unsigned
-custom_mempool_get_count(const struct rte_mempool *mp)
-{
- struct custom_mempool *cm = (struct custom_mempool *)(mp->pool_data);
-
- return cm->count;
-}
-
-static struct rte_mempool_ops mempool_ops_custom = {
- .name = "custom_handler",
- .alloc = custom_mempool_alloc,
- .free = custom_mempool_free,
- .enqueue = custom_mempool_enqueue,
- .dequeue = custom_mempool_dequeue,
- .get_count = custom_mempool_get_count,
-};
-
-MEMPOOL_REGISTER_OPS(mempool_ops_custom);
-