diff options
author | Xuan Zhuo <xuanzhuo@linux.alibaba.com> | 2022-10-17 17:25:55 +0800 |
---|---|---|
committer | Michael S. Tsirkin <mst@redhat.com> | 2022-11-07 13:12:20 -0500 |
commit | 7dc6be52f4ead25e7da8fb758900bdcb527996f7 (patch) | |
tree | 9b41d868f48df44b2db2184a404230ccf85a5134 /hw/net/virtio-net.c | |
parent | 4fdf69ab691e513280a3b5529de997d95a29f358 (diff) |
virtio-net: support queue reset
virtio-net and vhost-kernel implement queue reset.
Queued packets in the corresponding queue pair are flushed
or purged.
For virtio-net, userspace datapath will be disabled later in
__virtio_queue_reset(). It will set addr of vring to 0 and idx to 0.
Thus, virtio_net_receive() and virtio_net_flush_tx() will not receive
or send packets.
For vhost-net, the datapath will be disabled in vhost_net_virtqueue_reset().
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Signed-off-by: Kangjie Xu <kangjie.xu@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20221017092558.111082-13-xuanzhuo@linux.alibaba.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/net/virtio-net.c')
-rw-r--r-- | hw/net/virtio-net.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index 038a6fba7c..34fb4b1423 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -546,6 +546,23 @@ static RxFilterInfo *virtio_net_query_rxfilter(NetClientState *nc) return info; } +static void virtio_net_queue_reset(VirtIODevice *vdev, uint32_t queue_index) +{ + VirtIONet *n = VIRTIO_NET(vdev); + NetClientState *nc = qemu_get_subqueue(n->nic, vq2q(queue_index)); + + if (!nc->peer) { + return; + } + + if (get_vhost_net(nc->peer) && + nc->peer->info->type == NET_CLIENT_DRIVER_TAP) { + vhost_net_virtqueue_reset(vdev, nc, queue_index); + } + + flush_or_purge_queued_packets(nc); +} + static void virtio_net_reset(VirtIODevice *vdev) { VirtIONet *n = VIRTIO_NET(vdev); @@ -3827,6 +3844,7 @@ static void virtio_net_class_init(ObjectClass *klass, void *data) vdc->set_features = virtio_net_set_features; vdc->bad_features = virtio_net_bad_features; vdc->reset = virtio_net_reset; + vdc->queue_reset = virtio_net_queue_reset; vdc->set_status = virtio_net_set_status; vdc->guest_notifier_mask = virtio_net_guest_notifier_mask; vdc->guest_notifier_pending = virtio_net_guest_notifier_pending; |