From: "Artem V. Andreev" <artem.andr...@oktetlabs.ru>
Primarily, it is intended as a way for the mempool driver to provide
additional information on how it lays up objects inside the mempool.
Signed-off-by: Artem V. Andreev <artem.andr...@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybche...@solarflare.com>
---
lib/librte_mempool/rte_mempool.h | 31 +++++++++++++++++++++++++++++++
lib/librte_mempool/rte_mempool_ops.c | 15 +++++++++++++++
2 files changed, 46 insertions(+)
diff --git a/lib/librte_mempool/rte_mempool.h b/lib/librte_mempool/rte_mempool.h
index 16d95ae..75630e6 100644
--- a/lib/librte_mempool/rte_mempool.h
+++ b/lib/librte_mempool/rte_mempool.h
@@ -218,6 +218,11 @@ struct rte_mempool_memhdr {
void *opaque; /**< Argument passed to the free callback */
};
+/*
+ * Additional information about the mempool
+ */
+struct rte_mempool_info;
+
/**
* The RTE mempool structure.
*/
@@ -484,6 +489,13 @@ int rte_mempool_populate_one_by_one(struct rte_mempool *mp,
void *vaddr, rte_iova_t iova, size_t len,
rte_mempool_populate_obj_cb_t *obj_cb);
+/**
+ * Get some additional information about a mempool.
+ */
+typedef int (*rte_mempool_get_info_t)(const struct rte_mempool *mp,
+ struct rte_mempool_info *info);
+
+
/** Structure defining mempool operations structure */
struct rte_mempool_ops {
char name[RTE_MEMPOOL_OPS_NAMESIZE]; /**< Name of mempool ops struct. */
@@ -502,6 +514,10 @@ struct rte_mempool_ops {
* provided memory chunk.
*/
rte_mempool_populate_t populate;
+ /**
+ * Get mempool info
+ */
+ rte_mempool_get_info_t get_info;
} __rte_cache_aligned;
#define RTE_MEMPOOL_MAX_OPS_IDX 16 /**< Max registered ops structs */
@@ -662,6 +678,21 @@ int rte_mempool_ops_populate(struct rte_mempool *mp,
unsigned int max_objs,
rte_mempool_populate_obj_cb_t *obj_cb);
/**
+ * @internal wrapper for mempool_ops get_info callback.
+ *
+ * @param mp [in]
+ * Pointer to the memory pool.
+ * @param info [out]
+ * Pointer to the rte_mempool_info structure
+ * @return
+ * - 0: Success; The mempool driver supports retrieving supplementary
+ * mempool information
+ * - -ENOTSUP - doesn't support get_info ops (valid case).
+ */
+int rte_mempool_ops_get_info(const struct rte_mempool *mp,
+ struct rte_mempool_info *info);
+
+/**
* @internal wrapper for mempool_ops free callback.
*
* @param mp
diff --git a/lib/librte_mempool/rte_mempool_ops.c
b/lib/librte_mempool/rte_mempool_ops.c
index 37b0802..949ab43 100644
--- a/lib/librte_mempool/rte_mempool_ops.c
+++ b/lib/librte_mempool/rte_mempool_ops.c
@@ -88,6 +88,7 @@ rte_mempool_register_ops(const struct rte_mempool_ops *h)
ops->get_count = h->get_count;
ops->calc_mem_size = h->calc_mem_size;
ops->populate = h->populate;
+ ops->get_info = h->get_info;
rte_spinlock_unlock(&rte_mempool_ops_table.sl);
@@ -160,6 +161,20 @@ rte_mempool_ops_populate(struct rte_mempool *mp, unsigned
int max_objs,
return ops->populate(mp, max_objs, vaddr, iova, len, obj_cb);
}
+/* wrapper to get additional mempool info */
+int
+rte_mempool_ops_get_info(const struct rte_mempool *mp,
+ struct rte_mempool_info *info)
+{
+ struct rte_mempool_ops *ops;
+
+ ops = rte_mempool_get_ops(mp->ops_index);
+
+ RTE_FUNC_PTR_OR_ERR_RET(ops->get_info, -ENOTSUP);
+ return ops->get_info(mp, info);
+}
+
+
/* sets mempool ops previously registered by rte_mempool_register_ops. */
int
rte_mempool_set_ops_byname(struct rte_mempool *mp, const char *name,
--
2.7.4
