mbuf: set errno on pool creation error

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>

diff --git a/lib/librte_mbuf/rte_mbuf.c b/lib/librte_mbuf/rte_mbuf.c
index 601e528..4846b89 100644 (file)
--- 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;
        }