[PATCH v2 6/6] mempool: update range info to pool

[Santosh Shukla <santosh.shukla@caviumnetworks.com>]

HW pool manager e.g. Octeontx SoC demands s/w to program start and end
address of pool. Currently, there is no such handle in external mempool.
Introducing rte_mempool_update_range handle which will let HW(pool
manager)
know when common layer selects hugepage:
For each hugepage - update its start/end address to HW pool manager.

Signed-off-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>
Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
---
v1 -- v2:
- Added RTE_FUNC_PTR_OR_RET

 lib/librte_mempool/rte_mempool.c           |  3 +++
 lib/librte_mempool/rte_mempool.h           | 22 ++++++++++++++++++++++
 lib/librte_mempool/rte_mempool_ops.c       | 13 +++++++++++++
 lib/librte_mempool/rte_mempool_version.map |  1 +
 4 files changed, 39 insertions(+)

diff --git a/lib/librte_mempool/rte_mempool.c b/lib/librte_mempool/rte_mempool.c
index 4ae2bde53..ea32b65a9 100644
--- a/lib/librte_mempool/rte_mempool.c
+++ b/lib/librte_mempool/rte_mempool.c
@@ -363,6 +363,9 @@ rte_mempool_populate_phys(struct rte_mempool *mp, char *vaddr,
 	struct rte_mempool_memhdr *memhdr;
 	int ret;
 
+	/* update range info to mempool */
+	rte_mempool_ops_update_range(mp, vaddr, paddr, len);
+
 	/* create the internal ring if not already done */
 	if ((mp->flags & MEMPOOL_F_POOL_CREATED) == 0) {
 		ret = rte_mempool_ops_alloc(mp);
diff --git a/lib/librte_mempool/rte_mempool.h b/lib/librte_mempool/rte_mempool.h
index d7c2416f4..b59a522cd 100644
--- a/lib/librte_mempool/rte_mempool.h
+++ b/lib/librte_mempool/rte_mempool.h
@@ -396,6 +396,11 @@ typedef unsigned (*rte_mempool_get_count)(const struct rte_mempool *mp);
  */
 typedef int (*rte_mempool_get_capabilities_t)(struct rte_mempool *mp);
 
+/**
+ * Update range info to mempool.
+ */
+typedef void (*rte_mempool_update_range_t)(const struct rte_mempool *mp,
+		char *vaddr, phys_addr_t paddr, size_t len);
 
 /** Structure defining mempool operations structure */
 struct rte_mempool_ops {
@@ -406,6 +411,7 @@ struct rte_mempool_ops {
 	rte_mempool_dequeue_t dequeue;   /**< Dequeue an object. */
 	rte_mempool_get_count get_count; /**< Get qty of available objs. */
 	rte_mempool_get_capabilities_t get_capabilities; /**< Get capability */
+	rte_mempool_update_range_t update_range; /**< Update range to mempool */
 } __rte_cache_aligned;
 
 #define RTE_MEMPOOL_MAX_OPS_IDX 16  /**< Max registered ops structs */
@@ -531,6 +537,22 @@ int
 rte_mempool_ops_get_capabilities(struct rte_mempool *mp);
 
 /**
+ * @internal wrapper for mempool_ops update_range callback.
+ *
+ * @param mp
+ *   Pointer to the memory pool.
+ * @param vaddr
+ *   Pointer to the buffer virtual address
+ * @param paddr
+ *   Pointer to the buffer physical address
+ * @param len
+ *   Pool size
+ */
+void
+rte_mempool_ops_update_range(const struct rte_mempool *mp,
+				char *vaddr, phys_addr_t paddr, size_t len);
+
+/**
  * @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 84b2f8151..c9df351f3 100644
--- a/lib/librte_mempool/rte_mempool_ops.c
+++ b/lib/librte_mempool/rte_mempool_ops.c
@@ -86,6 +86,7 @@ rte_mempool_register_ops(const struct rte_mempool_ops *h)
 	ops->dequeue = h->dequeue;
 	ops->get_count = h->get_count;
 	ops->get_capabilities = h->get_capabilities;
+	ops->update_range = h->update_range;
 
 	rte_spinlock_unlock(&rte_mempool_ops_table.sl);
 
@@ -136,6 +137,18 @@ rte_mempool_ops_get_capabilities(struct rte_mempool *mp)
 	return ops->get_capabilities(mp);
 }
 
+/* wrapper to update range info to external mempool */
+void
+rte_mempool_ops_update_range(const struct rte_mempool *mp, char *vaddr,
+			     phys_addr_t paddr, size_t len)
+{
+	struct rte_mempool_ops *ops;
+
+	ops = rte_mempool_get_ops(mp->ops_index);
+	RTE_FUNC_PTR_OR_RET(ops->update_range);
+	ops->update_range(mp, vaddr, paddr, len);
+}
+
 /* sets mempool ops previously registered by rte_mempool_register_ops. */
 int
 rte_mempool_set_ops_byname(struct rte_mempool *mp, const char *name,
diff --git a/lib/librte_mempool/rte_mempool_version.map b/lib/librte_mempool/rte_mempool_version.map
index 392388bef..c0ed5a94f 100644
--- a/lib/librte_mempool/rte_mempool_version.map
+++ b/lib/librte_mempool/rte_mempool_version.map
@@ -46,5 +46,6 @@ DPDK_17.08 {
 	global:
 
 	rte_mempool_ops_get_capabilities;
+	rte_mempool_ops_update_range;
 
 } DPDK_16.07;
-- 
2.13.0