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dpdk/drivers/mempool/stack/rte_mempool_stack.c

@@ -0,0 +1,97 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2016-2019 Intel Corporation
+ */
+
+#include <stdio.h>
+#include <rte_mempool.h>
+#include <rte_stack.h>
+
+static int
+__stack_alloc(struct rte_mempool *mp, uint32_t flags)
+{
+	char name[RTE_STACK_NAMESIZE];
+	struct rte_stack *s;
+	int ret;
+
+	ret = snprintf(name, sizeof(name),
+		       RTE_MEMPOOL_MZ_FORMAT, mp->name);
+	if (ret < 0 || ret >= (int)sizeof(name)) {
+		rte_errno = ENAMETOOLONG;
+		return -rte_errno;
+	}
+
+	s = rte_stack_create(name, mp->size, mp->socket_id, flags);
+	if (s == NULL)
+		return -rte_errno;
+
+	mp->pool_data = s;
+
+	return 0;
+}
+
+static int
+stack_alloc(struct rte_mempool *mp)
+{
+	return __stack_alloc(mp, 0);
+}
+
+static int
+lf_stack_alloc(struct rte_mempool *mp)
+{
+	return __stack_alloc(mp, RTE_STACK_F_LF);
+}
+
+static int
+stack_enqueue(struct rte_mempool *mp, void * const *obj_table,
+	      unsigned int n)
+{
+	struct rte_stack *s = mp->pool_data;
+
+	return rte_stack_push(s, obj_table, n) == 0 ? -ENOBUFS : 0;
+}
+
+static int
+stack_dequeue(struct rte_mempool *mp, void **obj_table,
+	      unsigned int n)
+{
+	struct rte_stack *s = mp->pool_data;
+
+	return rte_stack_pop(s, obj_table, n) == 0 ? -ENOBUFS : 0;
+}
+
+static unsigned
+stack_get_count(const struct rte_mempool *mp)
+{
+	struct rte_stack *s = mp->pool_data;
+
+	return rte_stack_count(s);
+}
+
+static void
+stack_free(struct rte_mempool *mp)
+{
+	struct rte_stack *s = mp->pool_data;
+
+	rte_stack_free(s);
+}
+
+static struct rte_mempool_ops ops_stack = {
+	.name = "stack",
+	.alloc = stack_alloc,
+	.free = stack_free,
+	.enqueue = stack_enqueue,
+	.dequeue = stack_dequeue,
+	.get_count = stack_get_count
+};
+
+static struct rte_mempool_ops ops_lf_stack = {
+	.name = "lf_stack",
+	.alloc = lf_stack_alloc,
+	.free = stack_free,
+	.enqueue = stack_enqueue,
+	.dequeue = stack_dequeue,
+	.get_count = stack_get_count
+};
+
+RTE_MEMPOOL_REGISTER_OPS(ops_stack);
+RTE_MEMPOOL_REGISTER_OPS(ops_lf_stack);