From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 03F4EA0C41; Tue, 28 Sep 2021 18:06:03 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id E310E410E6; Tue, 28 Sep 2021 18:06:02 +0200 (CEST) Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by mails.dpdk.org (Postfix) with ESMTP id CF8D2410E5 for ; Tue, 28 Sep 2021 18:06:00 +0200 (CEST) X-IronPort-AV: E=McAfee;i="6200,9189,10121"; a="288400355" X-IronPort-AV: E=Sophos;i="5.85,329,1624345200"; d="scan'208";a="288400355" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Sep 2021 09:03:12 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.85,329,1624345200"; d="scan'208";a="519097323" Received: from dpdk-xuanding-dev2.sh.intel.com ([10.67.119.250]) by fmsmga008.fm.intel.com with ESMTP; 28 Sep 2021 09:03:10 -0700 From: Xuan Ding To: dev@dpdk.org, maxime.coquelin@redhat.com, chenbo.xia@intel.com, ktraynor@redhat.com Cc: jiayu.hu@intel.com, cheng1.jiang@intel.com, bruce.richardson@intel.com, sunil.pai.g@intel.com, yinan.wang@intel.com, YvonneX.Yang@intel.com, Xuan Ding Date: Tue, 28 Sep 2021 15:55:09 +0000 Message-Id: <20210928155509.73762-3-xuan.ding@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210928155509.73762-1-xuan.ding@intel.com> References: <20210909055758.106588-1-xuan.ding@intel.com> <20210928155509.73762-1-xuan.ding@intel.com> Subject: [dpdk-dev] [PATCH v6 2/2] examples/vhost: use API to check inflight packets X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" In async data path, call rte_vhost_async_get_inflight_thread_unsafe() API to directly return the number of inflight packets instead of maintaining a local variable. Signed-off-by: Xuan Ding --- examples/vhost/main.c | 31 +++++++++++++++++-------------- examples/vhost/main.h | 1 - 2 files changed, 17 insertions(+), 15 deletions(-) diff --git a/examples/vhost/main.c b/examples/vhost/main.c index d0bf1f31e3..7a5d97cef6 100644 --- a/examples/vhost/main.c +++ b/examples/vhost/main.c @@ -842,11 +842,8 @@ complete_async_pkts(struct vhost_dev *vdev) complete_count = rte_vhost_poll_enqueue_completed(vdev->vid, VIRTIO_RXQ, p_cpl, MAX_PKT_BURST); - if (complete_count) { + if (complete_count) free_pkts(p_cpl, complete_count); - __atomic_sub_fetch(&vdev->pkts_inflight, complete_count, __ATOMIC_SEQ_CST); - } - } static __rte_always_inline void @@ -886,7 +883,6 @@ drain_vhost(struct vhost_dev *vdev) complete_async_pkts(vdev); ret = rte_vhost_submit_enqueue_burst(vdev->vid, VIRTIO_RXQ, m, nr_xmit); - __atomic_add_fetch(&vdev->pkts_inflight, ret, __ATOMIC_SEQ_CST); enqueue_fail = nr_xmit - ret; if (enqueue_fail) @@ -1212,7 +1208,6 @@ drain_eth_rx(struct vhost_dev *vdev) complete_async_pkts(vdev); enqueue_count = rte_vhost_submit_enqueue_burst(vdev->vid, VIRTIO_RXQ, pkts, rx_count); - __atomic_add_fetch(&vdev->pkts_inflight, enqueue_count, __ATOMIC_SEQ_CST); enqueue_fail = rx_count - enqueue_count; if (enqueue_fail) @@ -1384,13 +1379,17 @@ destroy_device(int vid) if (async_vhost_driver) { uint16_t n_pkt = 0; - struct rte_mbuf *m_cpl[vdev->pkts_inflight]; + int pkts_inflight; - while (vdev->pkts_inflight) { + pkts_inflight = rte_vhost_async_get_inflight_thread_unsafe(vid, VIRTIO_RXQ); + struct rte_mbuf *m_cpl[pkts_inflight]; + + while (pkts_inflight) { n_pkt = rte_vhost_clear_queue_thread_unsafe(vid, VIRTIO_RXQ, - m_cpl, vdev->pkts_inflight); + m_cpl, pkts_inflight); free_pkts(m_cpl, n_pkt); - __atomic_sub_fetch(&vdev->pkts_inflight, n_pkt, __ATOMIC_SEQ_CST); + pkts_inflight = rte_vhost_async_get_inflight_thread_unsafe(vid, + VIRTIO_RXQ); } rte_vhost_async_channel_unregister(vid, VIRTIO_RXQ); @@ -1500,13 +1499,17 @@ vring_state_changed(int vid, uint16_t queue_id, int enable) if (async_vhost_driver) { if (!enable) { uint16_t n_pkt = 0; - struct rte_mbuf *m_cpl[vdev->pkts_inflight]; + int pkts_inflight; + + pkts_inflight = rte_vhost_async_get_inflight_thread_unsafe(vid, queue_id); + struct rte_mbuf *m_cpl[pkts_inflight]; - while (vdev->pkts_inflight) { + while (pkts_inflight) { n_pkt = rte_vhost_clear_queue_thread_unsafe(vid, queue_id, - m_cpl, vdev->pkts_inflight); + m_cpl, pkts_inflight); free_pkts(m_cpl, n_pkt); - __atomic_sub_fetch(&vdev->pkts_inflight, n_pkt, __ATOMIC_SEQ_CST); + pkts_inflight = rte_vhost_async_get_inflight_thread_unsafe(vid, + queue_id); } } } diff --git a/examples/vhost/main.h b/examples/vhost/main.h index e7b1ac60a6..0ccdce4b4a 100644 --- a/examples/vhost/main.h +++ b/examples/vhost/main.h @@ -51,7 +51,6 @@ struct vhost_dev { uint64_t features; size_t hdr_len; uint16_t nr_vrings; - uint16_t pkts_inflight; struct rte_vhost_memory *mem; struct device_statistics stats; TAILQ_ENTRY(vhost_dev) global_vdev_entry; -- 2.17.1