diff options
| -rw-r--r-- | hw/net/vhost_net-stub.c | 6 | ||||
| -rw-r--r-- | hw/net/vhost_net.c | 53 | ||||
| -rw-r--r-- | include/net/vhost_net.h | 2 |
3 files changed, 61 insertions, 0 deletions
diff --git a/hw/net/vhost_net-stub.c b/hw/net/vhost_net-stub.c index 2d745e3..9f7daae 100644 --- a/hw/net/vhost_net-stub.c +++ b/hw/net/vhost_net-stub.c @@ -107,3 +107,9 @@ void vhost_net_virtqueue_reset(VirtIODevice *vdev, NetClientState *nc, { } + +int vhost_net_virtqueue_restart(VirtIODevice *vdev, NetClientState *nc, + int vq_index) +{ + return 0; +} diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c index 8beecb4..d2926e2 100644 --- a/hw/net/vhost_net.c +++ b/hw/net/vhost_net.c @@ -34,6 +34,7 @@ #include "standard-headers/linux/virtio_ring.h" #include "hw/virtio/vhost.h" #include "hw/virtio/virtio-bus.h" +#include "linux-headers/linux/vhost.h" /* Features supported by host kernel. */ @@ -556,3 +557,55 @@ void vhost_net_virtqueue_reset(VirtIODevice *vdev, NetClientState *nc, net->dev.vqs + idx, net->dev.vq_index + idx); } + +int vhost_net_virtqueue_restart(VirtIODevice *vdev, NetClientState *nc, + int vq_index) +{ + VHostNetState *net = get_vhost_net(nc->peer); + const VhostOps *vhost_ops = net->dev.vhost_ops; + struct vhost_vring_file file = { }; + int idx, r; + + if (!net->dev.started) { + return -EBUSY; + } + + /* should only be called after backend is connected */ + assert(vhost_ops); + + idx = vhost_ops->vhost_get_vq_index(&net->dev, vq_index); + + r = vhost_virtqueue_start(&net->dev, + vdev, + net->dev.vqs + idx, + net->dev.vq_index + idx); + if (r < 0) { + goto err_start; + } + + if (net->nc->info->type == NET_CLIENT_DRIVER_TAP) { + file.index = idx; + file.fd = net->backend; + r = vhost_net_set_backend(&net->dev, &file); + if (r < 0) { + r = -errno; + goto err_start; + } + } + + return 0; + +err_start: + error_report("Error when restarting the queue."); + + if (net->nc->info->type == NET_CLIENT_DRIVER_TAP) { + file.fd = VHOST_FILE_UNBIND; + file.index = idx; + int r = vhost_net_set_backend(&net->dev, &file); + assert(r >= 0); + } + + vhost_dev_stop(&net->dev, vdev); + + return r; +} diff --git a/include/net/vhost_net.h b/include/net/vhost_net.h index 85d85a4..40b9a40 100644 --- a/include/net/vhost_net.h +++ b/include/net/vhost_net.h @@ -50,4 +50,6 @@ int vhost_net_set_mtu(struct vhost_net *net, uint16_t mtu); void vhost_net_virtqueue_reset(VirtIODevice *vdev, NetClientState *nc, int vq_index); +int vhost_net_virtqueue_restart(VirtIODevice *vdev, NetClientState *nc, + int vq_index); #endif |