[dpdk-dev] [PATCH v2] mbuf: use pktmbuf helper to create the pool
Olivier Matz
olivier.matz at 6wind.com
Tue Jan 31 10:55:35 CET 2017
Hi Hemant,
Sorry for the delay.
On Fri, 20 Jan 2017 12:41:20 +0530, Hemant Agrawal
<hemant.agrawal at nxp.com> wrote:
> When possible, replace the uses of rte_mempool_create() with
> the helper provided in librte_mbuf: rte_pktmbuf_pool_create().
>
> This is the preferred way to create a mbuf pool.
>
> This also updates the documentation.
>
> Signed-off-by: Olivier Matz <olivier.matz at 6wind.com>
> Signed-off-by: Hemant Agrawal <hemant.agrawal at nxp.com>
>
> [...]
>
> --- a/examples/ip_reassembly/main.c
> @@ -909,11 +908,13 @@ struct rte_lpm6_config lpm6_config = {
>
> snprintf(buf, sizeof(buf), "mbuf_pool_%u_%u", lcore, queue);
>
> - if ((rxq->pool = rte_mempool_create(buf, nb_mbuf, MBUF_SIZE,
> 0,
> - sizeof(struct rte_pktmbuf_pool_private),
> - rte_pktmbuf_pool_init, NULL,
> rte_pktmbuf_init, NULL,
> - socket, MEMPOOL_F_SP_PUT |
> MEMPOOL_F_SC_GET)) == NULL) {
> - RTE_LOG(ERR, IP_RSMBL, "mempool_create(%s) failed",
> buf);
> + rxq->pool = rte_pktmbuf_pool_create(buf, nb_mbuf,
> + 0, /* cache size */
> + 0, /* priv size */
> + MBUF_DATA_SIZE, socket);
> + if (rxq->pool == NULL) {
> + RTE_LOG(ERR, IP_RSMBL,
> + "rte_pktmbuf_pool_create(%s) failed", buf);
> return -1;
Here we loose the SP/SC flags. In the ip reassembly example, it looks
there is one mbuf pool per rx core since the beginning (commit
cc8f4d020). It's probably not critical, but I think we should remove
the ip reass part of the patch, what do you think?
Note that this issue was also in my RFC patch, so it's my
mistake :)
Apart from that, the patch looks good.
Thanks
Olivier
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