[PATCH v3 3/4] mempool: allow rte_pktmbuf_pool_create switch between memool handlers

[David Hunt <david.hunt@intel.com>]

If the user wants to have rte_pktmbuf_pool_create() use an external mempool
handler, they define RTE_MEMPOOL_HANDLER_NAME to be the name of the
mempool handler they wish to use, and change RTE_MEMPOOL_HANDLER_EXT to 'y'

Signed-off-by: David Hunt <david.hunt@intel.com>
---
 config/common_base         | 2 ++
 lib/librte_mbuf/rte_mbuf.c | 8 ++++++++
 2 files changed, 10 insertions(+)

diff --git a/config/common_base b/config/common_base
index 1af28c8..9d70cf4 100644
--- a/config/common_base
+++ b/config/common_base
@@ -350,6 +350,8 @@ CONFIG_RTE_RING_PAUSE_REP_COUNT=0
 CONFIG_RTE_LIBRTE_MEMPOOL=y
 CONFIG_RTE_MEMPOOL_CACHE_MAX_SIZE=512
 CONFIG_RTE_LIBRTE_MEMPOOL_DEBUG=n
+CONFIG_RTE_MEMPOOL_HANDLER_EXT=n
+CONFIG_RTE_MEMPOOL_HANDLER_NAME="custom_handler"
 
 #
 # Compile librte_mbuf
diff --git a/lib/librte_mbuf/rte_mbuf.c b/lib/librte_mbuf/rte_mbuf.c
index c18b438..42b0cd1 100644
--- a/lib/librte_mbuf/rte_mbuf.c
+++ b/lib/librte_mbuf/rte_mbuf.c
@@ -167,10 +167,18 @@ rte_pktmbuf_pool_create(const char *name, unsigned n,
 	mbp_priv.mbuf_data_room_size = data_room_size;
 	mbp_priv.mbuf_priv_size = priv_size;
 
+#ifdef RTE_MEMPOOL_HANDLER_EXT
+	return rte_mempool_create_ext(name, n, elt_size,
+		cache_size, sizeof(struct rte_pktmbuf_pool_private),
+		rte_pktmbuf_pool_init, &mbp_priv, rte_pktmbuf_init, NULL,
+		socket_id, 0,
+		RTE_MEMPOOL_HANDLER_NAME);
+#else
 	return rte_mempool_create(name, n, elt_size,
 		cache_size, sizeof(struct rte_pktmbuf_pool_private),
 		rte_pktmbuf_pool_init, &mbp_priv, rte_pktmbuf_init, NULL,
 		socket_id, 0);
+#endif
 }
 
 /* do some sanity checks on a mbuf: panic if it fails */
-- 
2.5.0