[v4] pci,pc,virtio: features, tests, fixes, cleanups

[PULL v4 37/83] virtio-net: introduce flush_or_purge_queued_packets()

Michael S. Tsirkin posted 83 patches 3 years, 1 month ago

Diff against v1 v2 v3
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[PULL v4 37/83] virtio-net: introduce flush_or_purge_queued_packets()

Posted by Michael S. Tsirkin 3 years, 1 month ago

From: Kangjie Xu <kangjie.xu@linux.alibaba.com>

Introduce the fucntion flush_or_purge_queued_packets(), it will be
used in device reset and virtqueue reset. Therefore, we extract the
common logic as a new function.

Signed-off-by: Kangjie Xu <kangjie.xu@linux.alibaba.com>
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20221017092558.111082-12-xuanzhuo@linux.alibaba.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 hw/net/virtio-net.c | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index b6903aea54..038a6fba7c 100644
--- a/hw/net/virtio-net.c
+++ b/hw/net/virtio-net.c
@@ -124,6 +124,16 @@ static int vq2q(int queue_index)
     return queue_index / 2;
 }
 
+static void flush_or_purge_queued_packets(NetClientState *nc)
+{
+    if (!nc->peer) {
+        return;
+    }
+
+    qemu_flush_or_purge_queued_packets(nc->peer, true);
+    assert(!virtio_net_get_subqueue(nc)->async_tx.elem);
+}
+
 /* TODO
  * - we could suppress RX interrupt if we were so inclined.
  */
@@ -566,12 +576,7 @@ static void virtio_net_reset(VirtIODevice *vdev)
 
     /* Flush any async TX */
     for (i = 0;  i < n->max_queue_pairs; i++) {
-        NetClientState *nc = qemu_get_subqueue(n->nic, i);
-
-        if (nc->peer) {
-            qemu_flush_or_purge_queued_packets(nc->peer, true);
-            assert(!virtio_net_get_subqueue(nc)->async_tx.elem);
-        }
+        flush_or_purge_queued_packets(qemu_get_subqueue(n->nic, i));
     }
 }
 
-- 
MST