diff options
Diffstat (limited to 'hw/net/virtio-net.c')
| -rw-r--r-- | hw/net/virtio-net.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index 7594f7ea92..f2014d5ea0 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -244,6 +244,7 @@ static void virtio_net_vhost_status(VirtIONet *n, uint8_t status) VirtIODevice *vdev = VIRTIO_DEVICE(n); NetClientState *nc = qemu_get_queue(n->nic); int queue_pairs = n->multiqueue ? n->max_queue_pairs : 1; + int cvq = n->max_ncs - n->max_queue_pairs; if (!get_vhost_net(nc->peer)) { return; @@ -285,14 +286,14 @@ static void virtio_net_vhost_status(VirtIONet *n, uint8_t status) } n->vhost_started = 1; - r = vhost_net_start(vdev, n->nic->ncs, queue_pairs, 0); + r = vhost_net_start(vdev, n->nic->ncs, queue_pairs, cvq); if (r < 0) { error_report("unable to start vhost net: %d: " "falling back on userspace virtio", -r); n->vhost_started = 0; } } else { - vhost_net_stop(vdev, n->nic->ncs, queue_pairs, 0); + vhost_net_stop(vdev, n->nic->ncs, queue_pairs, cvq); n->vhost_started = 0; } } @@ -3411,9 +3412,23 @@ static void virtio_net_device_realize(DeviceState *dev, Error **errp) return; } - n->max_queue_pairs = MAX(n->nic_conf.peers.queues, 1); + n->max_ncs = MAX(n->nic_conf.peers.queues, 1); + + /* + * Figure out the datapath queue pairs since the backend could + * provide control queue via peers as well. + */ + if (n->nic_conf.peers.queues) { + for (i = 0; i < n->max_ncs; i++) { + if (n->nic_conf.peers.ncs[i]->is_datapath) { + ++n->max_queue_pairs; + } + } + } + n->max_queue_pairs = MAX(n->max_queue_pairs, 1); + if (n->max_queue_pairs * 2 + 1 > VIRTIO_QUEUE_MAX) { - error_setg(errp, "Invalid number of queue_pairs (= %" PRIu32 "), " + error_setg(errp, "Invalid number of queue pairs (= %" PRIu32 "), " "must be a positive integer less than %d.", n->max_queue_pairs, (VIRTIO_QUEUE_MAX - 1) / 2); virtio_cleanup(vdev); |