[dpdk-dev] [PATCH] kni: use bulk functions to allocate and free mbufs
Ananyev, Konstantin
konstantin.ananyev at intel.com
Wed Jan 11 11:39:20 CET 2017
Hi Sergey,
...
> diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h
> index 4476d75..707c300 100644
> --- a/lib/librte_mbuf/rte_mbuf.h
> +++ b/lib/librte_mbuf/rte_mbuf.h
> @@ -1261,6 +1261,38 @@ static inline void rte_pktmbuf_free(struct rte_mbuf *m)
> }
>
> /**
> + * 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;
> + }
I think you forgot to call __rte_pktmbuf_prefree_seg(mbufs[i]); somewhere here.
Konstantin
> + }
> + rte_mempool_put_bulk(mp, (void * const *)mbufs, n);
> +}
> +
> +/**
> * Creates a "clone" of the given packet mbuf.
> *
> * Walks through all segments of the given packet mbuf, and for each of them:
> diff --git a/lib/librte_mempool/rte_mempool.h b/lib/librte_mempool/rte_mempool.h
> index d315d42..e612a0a 100644
> --- a/lib/librte_mempool/rte_mempool.h
> +++ b/lib/librte_mempool/rte_mempool.h
> @@ -1497,6 +1497,12 @@ rte_mempool_get(struct rte_mempool *mp, void **obj_p)
> return rte_mempool_get_bulk(mp, obj_p, 1);
> }
>
> +static inline int __attribute__((always_inline))
> +rte_mempool_get_n(struct rte_mempool *mp, void **obj_p, int n)
> +{
> + return rte_mempool_get_bulk(mp, obj_p, n);
> +}
> +
> /**
> * Return the number of entries in the mempool.
> *
> --
> 2.7.4
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