From 3f5e13709745415240d3025b63e2568740d9f626 Mon Sep 17 00:00:00 2001 From: Zhiyong Yang Date: Wed, 29 Mar 2017 15:16:16 +0800 Subject: [PATCH] net/vhost: remove limit of vhost Rx burst size vhost removes limit of Rx burst size(32 pkts) and supports to make an best effort to receive pkts. Cc: yuanhan.liu@linux.intel.com Cc: maxime.coquelin@redhat.com Signed-off-by: Zhiyong Yang Acked-by: Konstantin Ananyev --- drivers/net/vhost/rte_eth_vhost.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) diff --git a/drivers/net/vhost/rte_eth_vhost.c b/drivers/net/vhost/rte_eth_vhost.c index 2a38b194f1..7f5cd7ee28 100644 --- a/drivers/net/vhost/rte_eth_vhost.c +++ b/drivers/net/vhost/rte_eth_vhost.c @@ -392,6 +392,7 @@ eth_vhost_rx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs) { struct vhost_queue *r = q; uint16_t i, nb_rx = 0; + uint16_t nb_receive = nb_bufs; if (unlikely(rte_atomic32_read(&r->allow_queuing) == 0)) return 0; @@ -402,8 +403,20 @@ eth_vhost_rx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs) goto out; /* Dequeue packets from guest TX queue */ - nb_rx = rte_vhost_dequeue_burst(r->vid, - r->virtqueue_id, r->mb_pool, bufs, nb_bufs); + while (nb_receive) { + uint16_t nb_pkts; + uint16_t num = (uint16_t)RTE_MIN(nb_receive, + VHOST_MAX_PKT_BURST); + + nb_pkts = rte_vhost_dequeue_burst(r->vid, r->virtqueue_id, + r->mb_pool, &bufs[nb_rx], + num); + + nb_rx += nb_pkts; + nb_receive -= nb_pkts; + if (nb_pkts < num) + break; + } r->stats.pkts += nb_rx; -- 2.20.1