From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by dpdk.org (Postfix) with ESMTP id 2F12C376C for ; Fri, 24 Feb 2017 09:48:30 +0100 (CET) Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 24 Feb 2017 00:48:29 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.35,200,1484035200"; d="scan'208";a="61759907" Received: from unknown (HELO dpdk5.bj.intel.com) ([172.16.182.188]) by orsmga004.jf.intel.com with ESMTP; 24 Feb 2017 00:48:28 -0800 From: Zhiyong Yang To: dev@dpdk.org Cc: yuanhan.liu@linux.intel.com, maxime.coquelin@redhat.com, Zhiyong Yang Date: Fri, 24 Feb 2017 16:48:20 +0800 Message-Id: <1487926101-4637-5-git-send-email-zhiyong.yang@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1487926101-4637-1-git-send-email-zhiyong.yang@intel.com> References: <1487926101-4637-1-git-send-email-zhiyong.yang@intel.com> Subject: [dpdk-dev] [PATCH 4/5] net/vhost: remove limit of vhost TX burst size X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 Feb 2017 08:48:30 -0000 vhost removes limit of TX burst size(32 pkts) and supports to make an best effort to transmit pkts. Cc: yuanhan.liu@linux.intel.com Cc: maxime.coquelin@redhat.com Signed-off-by: Zhiyong Yang --- drivers/net/vhost/rte_eth_vhost.c | 24 ++++++++++++++++++++++-- 1 file changed, 22 insertions(+), 2 deletions(-) diff --git a/drivers/net/vhost/rte_eth_vhost.c b/drivers/net/vhost/rte_eth_vhost.c index e98cffd..1e1fa34 100644 --- a/drivers/net/vhost/rte_eth_vhost.c +++ b/drivers/net/vhost/rte_eth_vhost.c @@ -52,6 +52,7 @@ #define ETH_VHOST_QUEUES_ARG "queues" #define ETH_VHOST_CLIENT_ARG "client" #define ETH_VHOST_DEQUEUE_ZERO_COPY "dequeue-zero-copy" +#define VHOST_MAX_PKT_BURST 32 static const char *valid_arguments[] = { ETH_VHOST_IFACE_ARG, @@ -434,8 +435,27 @@ eth_vhost_tx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs) goto out; /* Enqueue packets to guest RX queue */ - nb_tx = rte_vhost_enqueue_burst(r->vid, - r->virtqueue_id, bufs, nb_bufs); + if (likely(nb_bufs <= VHOST_MAX_PKT_BURST)) + nb_tx = rte_vhost_enqueue_burst(r->vid, r->virtqueue_id, + bufs, nb_bufs); + else { + uint16_t nb_send = nb_bufs; + + while (nb_send) { + uint16_t nb_pkts; + uint16_t num = (uint16_t)RTE_MIN(nb_send, + VHOST_MAX_PKT_BURST); + + nb_pkts = rte_vhost_enqueue_burst(r->vid, + r->virtqueue_id, + &bufs[nb_tx], num); + + nb_tx += nb_pkts; + nb_send -= nb_pkts; + if (nb_pkts < num) + break; + } + } r->stats.pkts += nb_tx; r->stats.missed_pkts += nb_bufs - nb_tx; -- 2.7.4