[dpdk-dev] [PATCH] kni: use bulk functions to allocate and free mbufs
Stephen Hemminger
stephen at networkplumber.org
Wed Jan 11 17:17:59 CET 2017
On Fri, 30 Dec 2016 04:50:16 +0700
Sergey Vyazmitinov <s.vyazmitinov at brain4net.com> wrote:
> /**
> + * Free n packets mbuf back into its original mempool.
> + *
> + * Free each mbuf, and all its segments in case of chained buffers. Each
> + * segment is added back into its original mempool.
> + *
> + * @param mp
> + * The packets mempool.
> + * @param mbufs
> + * The packets mbufs array to be freed.
> + * @param n
> + * Number of packets.
> + */
> +static inline void rte_pktmbuf_free_bulk(struct rte_mempool *mp,
> + struct rte_mbuf **mbufs, unsigned n)
> +{
> + struct rte_mbuf *mbuf, *m_next;
> + unsigned i;
> + for (i = 0; i < n; ++i) {
> + mbuf = mbufs[i];
> + __rte_mbuf_sanity_check(mbuf, 1);
> +
> + mbuf = mbuf->next;
> + while (mbuf != NULL) {
> + m_next = mbuf->next;
> + rte_pktmbuf_free_seg(mbuf);
> + mbuf = m_next;
> + }
> + }
> + rte_mempool_put_bulk(mp, (void * const *)mbufs, n);
> +}
The mbufs may come from different pools. You need to handle that.
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