[dpdk-users] Problem in dpdk mpool initialization in dpdk20.11

[David Marchand]

On Mon, Mar 8, 2021 at 9:42 AM Pinak Tripathy <Pinak.Tripathy at exfo.com> wrote:
> I am porting the application from dpdk 17.11 to dpdk 20.11
> Application uses centos7.9 and melanox 5.2.2 PMD
>
> Below api call works fine in dpdk17.11 but fails in dpdk20.11
>
> rte_pktmbuf_pool_create ("mbuf_pool_0", (4096 * 64 * 16 - 1), 512, 0, RTE_MBUF_DEFAULT_BUF_SIZE) fails with error no 22 (EINVAL)
>               -MBUF: error setting mempool handler
>               -PANIC in app_init_mbuf_pools():
>               -Cannot create mbuf pool on socket 0 (errno=22)
>
> On adding debug trace found that  rte_mempool_ops_table.num_ops =0.
>
> Not sure what is causing this issue. Can you please point out likely cause of this?

This is likely a problem with loading mempool drivers.
Does adding "-d /path/to/librte_mempool_ring.so" to your EAL options
help with this issue?


-- 
David Marchand