From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by dpdk.org (Postfix) with ESMTP id 9157E2C55 for ; Wed, 29 Mar 2017 09:20:14 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=intel.com; i=@intel.com; q=dns/txt; s=intel; t=1490772014; x=1522308014; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=MaQ3AKZY4xRf7z7veaQgYBQmbm1C9ExoROKwbnL5r70=; b=nrbYsRQsVbVsVvPJxMBl7Mp0El3ktCdlSYozXApBPgRjLi88g8pWW3K1 +dVDbse9RuY6aTLm8Tcq0CdsaZQaAg==; Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 29 Mar 2017 00:20:14 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.36,240,1486454400"; d="scan'208";a="80485297" Received: from unknown (HELO dpdk5.bj.intel.com) ([172.16.182.182]) by orsmga005.jf.intel.com with ESMTP; 29 Mar 2017 00:20:11 -0700 From: Zhiyong Yang To: dev@dpdk.org Cc: ferruh.yigit@intel.com, konstantin.ananyev@intel.com, bruce.richardson@intel.com, yuanhan.liu@linux.intel.com, maxime.coquelin@redhat.com, Zhiyong Yang Date: Wed, 29 Mar 2017 15:16:15 +0800 Message-Id: <1490771776-3362-5-git-send-email-zhiyong.yang@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1490771776-3362-1-git-send-email-zhiyong.yang@intel.com> References: <1488539851-71009-2-git-send-email-zhiyong.yang@intel.com> <1490771776-3362-1-git-send-email-zhiyong.yang@intel.com> Subject: [dpdk-dev] [PATCH v3 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: Wed, 29 Mar 2017 07:20:14 -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 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 abe91c7..2a38b19 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, @@ -424,6 +425,7 @@ eth_vhost_tx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs) { struct vhost_queue *r = q; uint16_t i, nb_tx = 0; + uint16_t nb_send = nb_bufs; if (unlikely(rte_atomic32_read(&r->allow_queuing) == 0)) return 0; @@ -434,8 +436,19 @@ 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); + 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