[dpdk-dev] [RFC v3 2/6] lib/mbuf: enable parse flags when create mempool

[Qi Zhang <qi.z.zhang@intel.com>]

This give the option that applicaiton can configure each
memory chunk's size precisely. (by MEMPOOL_F_NO_SPREAD).

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
---
 lib/librte_mbuf/rte_mbuf.c | 15 ++++++++++++---
 lib/librte_mbuf/rte_mbuf.h |  8 +++++++-
 2 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/lib/librte_mbuf/rte_mbuf.c b/lib/librte_mbuf/rte_mbuf.c
index e714c5a59..dd119f5ac 100644
--- a/lib/librte_mbuf/rte_mbuf.c
+++ b/lib/librte_mbuf/rte_mbuf.c
@@ -110,7 +110,7 @@ rte_pktmbuf_init(struct rte_mempool *mp,
 struct rte_mempool *
 rte_pktmbuf_pool_create_by_ops(const char *name, unsigned int n,
 	unsigned int cache_size, uint16_t priv_size, uint16_t data_room_size,
-	int socket_id, const char *ops_name)
+	unsigned int flags, int socket_id, const char *ops_name)
 {
 	struct rte_mempool *mp;
 	struct rte_pktmbuf_pool_private mbp_priv;
@@ -130,7 +130,7 @@ rte_pktmbuf_pool_create_by_ops(const char *name, unsigned int n,
 	mbp_priv.mbuf_priv_size = priv_size;
 
 	mp = rte_mempool_create_empty(name, n, elt_size, cache_size,
-		 sizeof(struct rte_pktmbuf_pool_private), socket_id, 0);
+		 sizeof(struct rte_pktmbuf_pool_private), socket_id, flags);
 	if (mp == NULL)
 		return NULL;
 
@@ -164,9 +164,18 @@ rte_pktmbuf_pool_create(const char *name, unsigned int n,
 	int socket_id)
 {
 	return rte_pktmbuf_pool_create_by_ops(name, n, cache_size, priv_size,
-			data_room_size, socket_id, NULL);
+			data_room_size, 0, socket_id, NULL);
 }
 
+/* helper to create a mbuf pool with NO_SPREAD */
+struct rte_mempool *
+rte_pktmbuf_pool_create_with_flags(const char *name, unsigned int n,
+	unsigned int cache_size, uint16_t priv_size, uint16_t data_room_size,
+	unsigned int flags, int socket_id)
+{
+	return rte_pktmbuf_pool_create_by_ops(name, n, cache_size, priv_size,
+			data_room_size, flags, socket_id, NULL);
+}
 /* do some sanity checks on a mbuf: panic if it fails */
 void
 rte_mbuf_sanity_check(const struct rte_mbuf *m, int is_header)
diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h
index 9ce5d76d7..d83d17b79 100644
--- a/lib/librte_mbuf/rte_mbuf.h
+++ b/lib/librte_mbuf/rte_mbuf.h
@@ -1127,6 +1127,12 @@ rte_pktmbuf_pool_create(const char *name, unsigned n,
 	unsigned cache_size, uint16_t priv_size, uint16_t data_room_size,
 	int socket_id);
 
+struct rte_mempool *
+rte_pktmbuf_pool_create_with_flags(const char *name, unsigned int n,
+	unsigned cache_size, uint16_t priv_size, uint16_t data_room_size,
+	unsigned flags, int socket_id);
+
+
 /**
  * Create a mbuf pool with a given mempool ops name
  *
@@ -1167,7 +1173,7 @@ rte_pktmbuf_pool_create(const char *name, unsigned n,
 struct rte_mempool *
 rte_pktmbuf_pool_create_by_ops(const char *name, unsigned int n,
 	unsigned int cache_size, uint16_t priv_size, uint16_t data_room_size,
-	int socket_id, const char *ops_name);
+	unsigned int flags, int socket_id, const char *ops_name);
 
 /**
  * Get the data room size of mbufs stored in a pktmbuf_pool
-- 
2.13.6