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netdev-dpdk: leverage the mempool offload support

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DPDK 16.07 introduced the support for mempool offload support.
rte_pktmbuf_pool_create is the recommended method for creating pktmbuf
pools. Buffer pools created with rte_mempool_create may not get offloaded
to the underlying offloaded mempools.

This patch, changes the rte_mempool_create to use helper wrapper
"rte_pktmbuf_pool_create" provided by dpdk, so that it can leverage
offloaded mempools.

Signed-off-by: Hemant Agrawal <hemant.agrawal@nxp.com>
Acked-by: Jianbo Liu <jianbo.liu@linaro.org>
Acked-by: Kevin Traynor <ktraynor@redhat.com>
Acked-by: Darrell Ball <dlu998@gmail.com>
Signed-off-by: Ben Pfaff <blp@ovn.org>
This commit is contained in:
Hemant Agrawal
2017-04-13 11:01:53 +05:30
committed by Ben Pfaff
parent 86bd9ed93c
commit 401b70d632
1 changed files with 13 additions and 13 deletions
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26
lib/netdev-dpdk.c
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@@ -451,22 +451,19 @@ free_dpdk_buf(struct dp_packet *p)
}
static void
ovs_rte_pktmbuf_init(struct rte_mempool *mp,
ovs_rte_pktmbuf_init(struct rte_mempool *mp OVS_UNUSED,
void *opaque_arg OVS_UNUSED,
void *_p,
unsigned i OVS_UNUSED)
{
struct rte_mbuf *pkt = _p;
rte_pktmbuf_init(mp, opaque_arg, _p, i);
dp_packet_init_dpdk((struct dp_packet *) pkt, pkt->buf_len);
}
static struct dpdk_mp *
dpdk_mp_create(int socket_id, int mtu)
{
struct rte_pktmbuf_pool_private mbp_priv;
struct dpdk_mp *dmp;
unsigned mp_size;
char *mp_name;
@@ -478,9 +475,6 @@ dpdk_mp_create(int socket_id, int mtu)
dmp->socket_id = socket_id;
dmp->mtu = mtu;
dmp->refcount = 1;
mbp_priv.mbuf_data_room_size = MBUF_SIZE(mtu) - sizeof(struct dp_packet);
mbp_priv.mbuf_priv_size = sizeof(struct dp_packet)
- sizeof(struct rte_mbuf);
/* XXX: this is a really rough method of provisioning memory.
* It's impossible to determine what the exact memory requirements are
* when the number of ports and rxqs that utilize a particular mempool can
@@ -496,18 +490,24 @@ dpdk_mp_create(int socket_id, int mtu)
mp_name = xasprintf("ovs_mp_%d_%d_%u", dmp->mtu, dmp->socket_id,
mp_size);
dmp->mp = rte_mempool_create(mp_name, mp_size, MBUF_SIZE(mtu),
MP_CACHE_SZ,
sizeof(struct rte_pktmbuf_pool_private),
rte_pktmbuf_pool_init, &mbp_priv,
ovs_rte_pktmbuf_init, NULL,
socket_id, 0);
dmp->mp = rte_pktmbuf_pool_create(mp_name, mp_size,
MP_CACHE_SZ,
sizeof (struct dp_packet)
- sizeof (struct rte_mbuf),
MBUF_SIZE(mtu)
- sizeof(struct dp_packet),
socket_id);
if (dmp->mp) {
VLOG_DBG("Allocated \"%s\" mempool with %u mbufs",
mp_name, mp_size);
}
free(mp_name);
if (dmp->mp) {
/* rte_pktmbuf_pool_create has done some initialization of the
* rte_mbuf part of each dp_packet, while ovs_rte_pktmbuf_init
* initializes some OVS specific fields of dp_packet.
*/
rte_mempool_obj_iter(dmp->mp, ovs_rte_pktmbuf_init, NULL);
return dmp;
}
} while (rte_errno == ENOMEM && (mp_size /= 2) >= MIN_NB_MBUF);