mempool: remove callback to register memory area

The callback is not required any more since there is a new callback
to populate objects using provided memory area which provides
the same information.

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Acked-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>
Acked-by: Olivier Matz <olivier.matz@6wind.com>

doc/guides/rel_notes/deprecation.rst

@@ -51,7 +51,6 @@ Deprecation Notices
 
   The following changes are planned:
 
-  - substitute ``register_memory_area`` with ``populate`` ops.
   - addition of new op to allocate contiguous
     block of objects if underlying driver supports it.
 

doc/guides/rel_notes/release_18_05.rst

@@ -250,6 +250,8 @@ ABI Changes
   Callback ``get_capabilities`` has been removed from ``rte_mempool_ops``
   since its features are covered by ``calc_mem_size`` and ``populate``
   callbacks.
+  Callback ``register_memory_area`` has been removed from ``rte_mempool_ops``
+  since the new callback ``populate`` may be used instead of it.
 
 * **Additional fields in rte_eth_dev_info.**
 

lib/librte_mempool/rte_mempool.c

@@ -378,11 +378,6 @@ rte_mempool_populate_iova(struct rte_mempool *mp, char *vaddr,
 	if (ret != 0)
 		return ret;
 
-	/* Notify memory area to mempool */
-	ret = rte_mempool_ops_register_memory_area(mp, vaddr, iova, len);
-	if (ret != -ENOTSUP && ret < 0)
-		return ret;
-
 	/* mempool is already populated */
 	if (mp->populated_size >= mp->size)
 		return -ENOSPC;

lib/librte_mempool/rte_mempool.h

@@ -370,12 +370,6 @@ typedef int (*rte_mempool_dequeue_t)(struct rte_mempool *mp,
  */
 typedef unsigned (*rte_mempool_get_count)(const struct rte_mempool *mp);
 
-/**
- * Notify new memory area to mempool.
- */
-typedef int (*rte_mempool_ops_register_memory_area_t)
-(const struct rte_mempool *mp, char *vaddr, rte_iova_t iova, size_t len);
-
 /**
  * Calculate memory size required to store given number of objects.
  *
@@ -513,10 +507,6 @@ struct rte_mempool_ops {
 	rte_mempool_enqueue_t enqueue;   /**< Enqueue an object. */
 	rte_mempool_dequeue_t dequeue;   /**< Dequeue an object. */
 	rte_mempool_get_count get_count; /**< Get qty of available objs. */
-	/**
-	 * Notify new memory area to mempool
-	 */
-	rte_mempool_ops_register_memory_area_t register_memory_area;
 	/**
 	 * Optional callback to calculate memory size required to
 	 * store specified number of objects.
@@ -638,27 +628,6 @@ rte_mempool_ops_enqueue_bulk(struct rte_mempool *mp, void * const *obj_table,
 unsigned
 rte_mempool_ops_get_count(const struct rte_mempool *mp);
 
-/**
- * @internal wrapper for mempool_ops register_memory_area callback.
- * API to notify the mempool handler when a new memory area is added to pool.
- *
- * @param mp
- *   Pointer to the memory pool.
- * @param vaddr
- *   Pointer to the buffer virtual address.
- * @param iova
- *   Pointer to the buffer IO address.
- * @param len
- *   Pool size.
- * @return
- *   - 0: Success;
- *   - -ENOTSUP - doesn't support register_memory_area ops (valid error case).
- *   - Otherwise, rte_mempool_populate_phys fails thus pool create fails.
- */
-int
-rte_mempool_ops_register_memory_area(const struct rte_mempool *mp,
-				char *vaddr, rte_iova_t iova, size_t len);
-
 /**
  * @internal wrapper for mempool_ops calc_mem_size callback.
  * API to calculate size of memory required to store specified number of

lib/librte_mempool/rte_mempool_ops.c

@@ -57,7 +57,6 @@ rte_mempool_register_ops(const struct rte_mempool_ops *h)
 	ops->enqueue = h->enqueue;
 	ops->dequeue = h->dequeue;
 	ops->get_count = h->get_count;
-	ops->register_memory_area = h->register_memory_area;
 	ops->calc_mem_size = h->calc_mem_size;
 	ops->populate = h->populate;
 
@@ -98,19 +97,6 @@ rte_mempool_ops_get_count(const struct rte_mempool *mp)
 	return ops->get_count(mp);
 }
 
-/* wrapper to notify new memory area to external mempool */
-int
-rte_mempool_ops_register_memory_area(const struct rte_mempool *mp, char *vaddr,
-					rte_iova_t iova, size_t len)
-{
-	struct rte_mempool_ops *ops;
-
-	ops = rte_mempool_get_ops(mp->ops_index);
-
-	RTE_FUNC_PTR_OR_ERR_RET(ops->register_memory_area, -ENOTSUP);
-	return ops->register_memory_area(mp, vaddr, iova, len);
-}
-
 /* wrapper to notify new memory area to external mempool */
 ssize_t
 rte_mempool_ops_calc_mem_size(const struct rte_mempool *mp,

lib/librte_mempool/rte_mempool_version.map

@@ -45,7 +45,6 @@ DPDK_16.07 {
 DPDK_17.11 {
 	global:
 
-	rte_mempool_ops_register_memory_area;
 	rte_mempool_populate_iova;
 	rte_mempool_populate_iova_tab;