[dpdk-dev] [PATCH 2/4] mbuf: set errno on pool creation error

[Olivier Matz <olivier.matz@6wind.com>]

In rte_pktmbuf_pool_create(), the rte_errno variable was not always
set on failure.

Fixes: 152ca517900b ("mbuf: use default mempool handler from config")

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
---
 lib/librte_mbuf/rte_mbuf.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/librte_mbuf/rte_mbuf.c b/lib/librte_mbuf/rte_mbuf.c
index 601e528..4846b89 100644
--- a/lib/librte_mbuf/rte_mbuf.c
+++ b/lib/librte_mbuf/rte_mbuf.c
@@ -156,6 +156,7 @@ rte_pktmbuf_pool_create(const char *name, unsigned n,
 	struct rte_mempool *mp;
 	struct rte_pktmbuf_pool_private mbp_priv;
 	unsigned elt_size;
+	int ret;
 
 	if (RTE_ALIGN(priv_size, RTE_MBUF_PRIV_ALIGN) != priv_size) {
 		RTE_LOG(ERR, MBUF, "mbuf priv_size=%u is not aligned\n",
@@ -181,8 +182,10 @@ rte_pktmbuf_pool_create(const char *name, unsigned n,
 	}
 	rte_pktmbuf_pool_init(mp, &mbp_priv);
 
-	if (rte_mempool_populate_default(mp) < 0) {
+	ret = rte_mempool_populate_default(mp);
+	if (ret < 0) {
 		rte_mempool_free(mp);
+		rte_errno = -ret;
 		return NULL;
 	}
 
-- 
2.8.1