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