-----Original Message-----
From: Wang, YuanX <redacted>
Sent: Thursday, September 9, 2021 2:58 PM
To: dev@dpdk.org
Cc: maxime.coquelin@redhat.com; Xia, Chenbo <redacted>; Pai G,
Sunil [off-list ref]; Hu, Jiayu [off-list ref]; Ding, Xuan
[off-list ref]; Jiang, Cheng1 [off-list ref]; Ma, WenwuX
[off-list ref]; Yang, YvonneX [off-list ref]; Wang, YuanX
[off-list ref]
Subject: [PATCH 1/2] vhost: support to clear in-flight packets for async
dequeue

rte_vhost_clear_queue_thread_unsafe() supports to clear
in-flight packets for async enqueue only. But after
supporting async dequeue, this API should support async dequeue too.

Signed-off-by: Yuan Wang <redacted>
---
 lib/vhost/virtio_net.c | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/lib/vhost/virtio_net.c b/lib/vhost/virtio_net.c
index e0159b53e3..7f6183a929 100644
--- a/lib/vhost/virtio_net.c
+++ b/lib/vhost/virtio_net.c

@@ -27,6 +27,11 @@

 #define VHOST_ASYNC_BATCH_THRESHOLD 32

+static __rte_always_inline uint16_t
+async_poll_dequeue_completed_split(struct virtio_net *dev,
+		struct vhost_virtqueue *vq, uint16_t queue_id,
+		struct rte_mbuf **pkts, uint16_t count, bool legacy_ol_flags);
+
 static  __rte_always_inline bool
 rxvq_is_mergeable(struct virtio_net *dev)
 {

@@ -2119,11 +2124,6 @@ rte_vhost_clear_queue_thread_unsafe(int vid, uint16_t

queue_id,
 		return 0;

 	VHOST_LOG_DATA(DEBUG, "(%d) %s\n", dev->vid, __func__);
-	if (unlikely(!is_valid_virt_queue_idx(queue_id, 0, dev->nr_vring))) {
-		VHOST_LOG_DATA(ERR, "(%d) %s: invalid virtqueue idx %d.\n",
-			dev->vid, __func__, queue_id);
-		return 0;
-	}

 	vq = dev->virtqueue[queue_id];

@@ -2133,7 +2133,11 @@ rte_vhost_clear_queue_thread_unsafe(int vid, uint16_t

queue_id,
 		return 0;
 	}

-	n_pkts_cpl = vhost_poll_enqueue_completed(dev, queue_id, pkts, count);
+	if ((queue_id % 2) == 0)