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| author | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2019-02-27 13:24:10 +0000 |
|---|---|---|
| committer | Jason Wang <jasowang@redhat.com> | 2019-03-05 11:27:41 +0800 |
| commit | b2c929f02ba37b206144735313af10fb9cc5d1a4 (patch) | |
| tree | 6337a0e90ce488d3a32fd27b06e2a9a856f75c85 /hw | |
| parent | 44b416ad62bf1068a9653fe066bd500fb9b0d88f (diff) | |
| download | qemu-b2c929f02ba37b206144735313af10fb9cc5d1a4.zip qemu-b2c929f02ba37b206144735313af10fb9cc5d1a4.tar.gz qemu-b2c929f02ba37b206144735313af10fb9cc5d1a4.tar.bz2 | |
virtio-net: Allow qemu_announce_self to trigger virtio announcements
Expose the virtio-net self announcement capability and allow
qemu_announce_self() to call it.
These announces are caused by something external (i.e. the
announce-self command); they won't trigger if the migration
counter is triggering announces at the same time.
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/net/trace-events | 1 | ||||
| -rw-r--r-- | hw/net/virtio-net.c | 35 |
2 files changed, 33 insertions, 3 deletions
diff --git a/hw/net/trace-events b/hw/net/trace-events index b237d90..3a86004 100644 --- a/hw/net/trace-events +++ b/hw/net/trace-events @@ -361,6 +361,7 @@ sunhme_rx_desc(uint32_t addr, int offset, uint32_t status, int len, int cr, int sunhme_rx_xsum_calc(uint16_t xsum) "calculated incoming xsum as 0x%x" # hw/net/virtio-net.c +virtio_net_announce_notify(void) "" virtio_net_announce_timer(int round) "%d" virtio_net_handle_announce(int round) "%d" virtio_net_post_load_device(void) diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index 38b8974..7e2c2a6 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -150,15 +150,42 @@ static bool virtio_net_started(VirtIONet *n, uint8_t status) (n->status & VIRTIO_NET_S_LINK_UP) && vdev->vm_running; } +static void virtio_net_announce_notify(VirtIONet *net) +{ + VirtIODevice *vdev = VIRTIO_DEVICE(net); + trace_virtio_net_announce_notify(); + + net->status |= VIRTIO_NET_S_ANNOUNCE; + virtio_notify_config(vdev); +} + static void virtio_net_announce_timer(void *opaque) { VirtIONet *n = opaque; - VirtIODevice *vdev = VIRTIO_DEVICE(n); trace_virtio_net_announce_timer(n->announce_timer.round); n->announce_timer.round--; - n->status |= VIRTIO_NET_S_ANNOUNCE; - virtio_notify_config(vdev); + virtio_net_announce_notify(n); +} + +static void virtio_net_announce(NetClientState *nc) +{ + VirtIONet *n = qemu_get_nic_opaque(nc); + VirtIODevice *vdev = VIRTIO_DEVICE(n); + + /* + * Make sure the virtio migration announcement timer isn't running + * If it is, let it trigger announcement so that we do not cause + * confusion. + */ + if (n->announce_timer.round) { + return; + } + + if (virtio_vdev_has_feature(vdev, VIRTIO_NET_F_GUEST_ANNOUNCE) && + virtio_vdev_has_feature(vdev, VIRTIO_NET_F_CTRL_VQ)) { + virtio_net_announce_notify(n); + } } static void virtio_net_vhost_status(VirtIONet *n, uint8_t status) @@ -2556,6 +2583,7 @@ static NetClientInfo net_virtio_info = { .receive = virtio_net_receive, .link_status_changed = virtio_net_set_link_status, .query_rx_filter = virtio_net_query_rxfilter, + .announce = virtio_net_announce, }; static bool virtio_net_guest_notifier_pending(VirtIODevice *vdev, int idx) @@ -2692,6 +2720,7 @@ static void virtio_net_device_realize(DeviceState *dev, Error **errp) qemu_announce_timer_reset(&n->announce_timer, migrate_announce_params(), QEMU_CLOCK_VIRTUAL, virtio_net_announce_timer, n); + n->announce_timer.round = 0; if (n->netclient_type) { /* |