[dpdk-dev] [PATCH v2 2/2] mempool:pktmbuf pool default fallback for mempool ops error
Hunt, David
david.hunt at intel.com
Fri Sep 16 10:29:32 CEST 2016
Hi Hemant,
On 15/9/2016 6:13 PM, Hemant Agrawal wrote:
> 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);
Should we log a warning message here saying that we're falling back to
the mp/mc handler?
> +
> if (rte_errno != 0) {
> RTE_LOG(ERR, MBUF, "error setting mempool handler\n");
> return NULL;
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