From mboxrd@z Thu Jan 1 00:00:00 1970 From: Zhiyong Yang Subject: [PATCH v2 5/5] net/vhost: remove limit of vhost RX burst size Date: Fri, 3 Mar 2017 19:17:31 +0800 Message-ID: <1488539851-71009-6-git-send-email-zhiyong.yang@intel.com> References: <1487926101-4637-2-git-send-email-zhiyong.yang@intel.com> <1488539851-71009-1-git-send-email-zhiyong.yang@intel.com> Cc: bruce.richardson@intel.com, yuanhan.liu@linux.intel.com, maxime.coquelin@redhat.com, Zhiyong Yang To: dev@dpdk.org Return-path: Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by dpdk.org (Postfix) with ESMTP id 51E69F8C0 for ; Fri, 3 Mar 2017 12:20:32 +0100 (CET) In-Reply-To: <1488539851-71009-1-git-send-email-zhiyong.yang@intel.com> List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" 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 --- 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 603b84d..e0048fa 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; -- 2.7.4