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Subject: [PATCH v1 13/37] vhost-pci-slave/msg: VHOST_USER_GET_QUEUE_NUM
Send the max supported queue num according to the device type back to the master. Signed-off-by: Wei Wang <wei.w.wang@intel.com> --- hw/virtio/vhost-pci-slave.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/hw/virtio/vhost-pci-slave.c b/hw/virtio/vhost-pci-slave.c index 9b00be4..8e5ecf8 100644 --- a/hw/virtio/vhost-pci-slave.c +++ b/hw/virtio/vhost-pci-slave.c @@ -90,6 +90,23 @@ static void vp_slave_set_device_type(VhostUserMsg *msg) } } +static int vp_slave_get_queue_num(CharBackend *chr_be, VhostUserMsg *msg) +{ + switch (vp_slave->dev_type) { + case VIRTIO_ID_NET: + msg->payload.u64 = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX; + break; + default: + error_report("GET_QUEUE_NUM: device type %d is not supported", + vp_slave->dev_type); + return -1; + } + msg->size = sizeof(msg->payload.u64); + msg->flags |= VHOST_USER_REPLY_MASK; + + return vp_slave_write(chr_be, msg); +} + static int vp_slave_can_read(void *opaque) { return VHOST_USER_HDR_SIZE; @@ -141,6 +158,11 @@ static void vp_slave_read(void *opaque, const uint8_t *buf, int size) case VHOST_USER_SET_DEVICE_ID: vp_slave_set_device_type(&msg); break; + case VHOST_USER_GET_QUEUE_NUM: + ret = vp_slave_get_queue_num(chr_be, &msg); + if (ret < 0) + goto err_handling; + break; default: error_report("vhost-pci-slave does not support msg request = %d", msg.request); -- 2.7.4
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