[dpdk-dev] [PATCH v2 2/2] mempool:pktmbuf pool default fallback for mempool ops error

[Hemant Agrawal]

In the rte_pktmbuf_pool_create, if the default external mempool is
not available, the implementation can default to "ring_mp_mc", which
is an software implementation.

Signed-off-by: Hemant Agrawal <hemant.agrawal at nxp.com>
---
 lib/librte_mbuf/rte_mbuf.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/librte_mbuf/rte_mbuf.c b/lib/librte_mbuf/rte_mbuf.c
index 4846b89..4adb4f5 100644
--- a/lib/librte_mbuf/rte_mbuf.c
+++ b/lib/librte_mbuf/rte_mbuf.c
@@ -176,6 +176,11 @@ rte_pktmbuf_pool_create(const char *name, unsigned n,

        rte_errno = rte_mempool_set_ops_byname(mp,
                        RTE_MBUF_DEFAULT_MEMPOOL_OPS, NULL);
+
+       /* on error, try falling back to the software based default pool */
+       if (rte_errno == -EOPNOTSUPP)
+               rte_errno = rte_mempool_set_ops_byname(mp, "ring_mp_mc", NULL);
+
        if (rte_errno != 0) {
                RTE_LOG(ERR, MBUF, "error setting mempool handler\n");
                return NULL;
-- 
1.9.1