runtime-rs: bridge the vfio device between runtime-rs and dragonball

Previously, Dragonball did not support PCI device hot-plugging or
VFIO device passthrough. Therefore, the runtime-rs support for
Dragonball was incomplete. it is time to complete it so that users
can use Dragonball's PCI hot-plugging and VFIO passthrough capabilities.

Fixes: #8748

Signed-off-by: alex.lyn <alex.lyn@antgroup.com>

src/runtime-rs/crates/hypervisor/src/dragonball/inner_device.rs

@@ -13,13 +13,16 @@ use dragonball::api::v1::{
     BlockDeviceConfigInfo, FsDeviceConfigInfo, FsMountConfigInfo, NetworkInterfaceConfig,
     VsockDeviceConfigInfo,
 };
-use dragonball::device_manager::blk_dev_mgr::BlockDeviceType;
+use dragonball::device_manager::{
+    blk_dev_mgr::BlockDeviceType,
+    vfio_dev_mgr::{HostDeviceConfig, VfioPciDeviceConfig},
+};
 
 use super::{build_dragonball_network_config, DragonballInner};
 use crate::VhostUserConfig;
 use crate::{
     device::DeviceType, HybridVsockConfig, NetworkConfig, ShareFsConfig, ShareFsMountConfig,
-    ShareFsMountOperation, ShareFsMountType, VfioBusMode, VfioDevice, VmmState, JAILER_ROOT,
+    ShareFsMountOperation, ShareFsMountType, VfioDevice, VmmState, JAILER_ROOT,
 };
 
 const MB_TO_B: u32 = 1024 * 1024;
@@ -142,39 +145,47 @@ impl DragonballInner {
             0
         };
 
-        let bus_mode = VfioBusMode::to_string(vfio_device.bus_mode);
-
-        info!(sl!(), "Mock for dragonball insert host device.");
         info!(
             sl!(),
-            " Mock for dragonball insert host device. 
+            "insert host device. 
             host device id: {:?}, 
             bus_slot_func: {:?}, 
-            bus mod: {:?}, 
             guest device id: {:?}, 
             vendor/device id: {:?}",
             primary_device.hostdev_id,
             primary_device.bus_slot_func,
-            bus_mode,
             guest_dev_id,
             vendor_device_id,
         );
 
-        // FIXME:
-        // interface implementation to be done when dragonball supports
-        // self.vmm_instance.insert_host_device(host_cfg)?;
+        let vfio_dev_config = VfioPciDeviceConfig {
+            bus_slot_func: primary_device.bus_slot_func,
+            vendor_device_id,
+            guest_dev_id: Some(guest_dev_id),
+            ..Default::default()
+        };
+        let host_dev_config = HostDeviceConfig {
+            hostdev_id: primary_device.hostdev_id,
+            sysfs_path: primary_device.sysfs_path.clone(),
+            dev_config: vfio_dev_config,
+        };
+
+        self.vmm_instance
+            .insert_host_device(host_dev_config)
+            .context("insert host device failed")?;
 
         Ok(())
     }
 
     fn remove_vfio_device(&mut self, hostdev_id: String) -> Result<()> {
-        info!(
-            sl!(),
-            "Mock for dragonball remove host_device with hostdev id {:?}", hostdev_id
-        );
-        // FIXME:
-        // interface implementation to be done when dragonball supports
-        // self.vmm_instance.remove_host_device(hostdev_id)?;
+        info!(sl!(), "remove host_device with hostdev id {:?}", hostdev_id);
+
+        self.vmm_instance
+            .prepare_remove_host_device(&hostdev_id)
+            .context("prepare to remove host device failed")?;
+        self.vmm_instance
+            .remove_host_device(&hostdev_id)
+            .context("remove host device failed")?;
 
         Ok(())
     }

src/runtime-rs/crates/hypervisor/src/dragonball/vmm_instance.rs

@@ -19,7 +19,10 @@ use dragonball::{
         InstanceInfo, InstanceState, NetworkInterfaceConfig, VcpuResizeInfo, VmmAction,
         VmmActionError, VmmData, VmmRequest, VmmResponse, VmmService, VsockDeviceConfigInfo,
     },
-    device_manager::{balloon_dev_mgr::BalloonDeviceConfigInfo, mem_dev_mgr::MemDeviceConfigInfo},
+    device_manager::{
+        balloon_dev_mgr::BalloonDeviceConfigInfo, mem_dev_mgr::MemDeviceConfigInfo,
+        vfio_dev_mgr::HostDeviceConfig,
+    },
     vm::VmConfigInfo,
     Vmm,
 };
@@ -194,6 +197,30 @@ impl VmmInstance {
         Err(anyhow!("Failed to get machine info"))
     }
 
+    pub fn insert_host_device(&self, device_cfg: HostDeviceConfig) -> Result<()> {
+        self.handle_request_with_retry(Request::Sync(VmmAction::InsertHostDevice(
+            device_cfg.clone(),
+        )))
+        .with_context(|| format!("Failed to insert host device {:?}", device_cfg))?;
+        Ok(())
+    }
+
+    pub fn prepare_remove_host_device(&self, id: &str) -> Result<()> {
+        info!(sl!(), "prepare to remove host device {}", id);
+        self.handle_request(Request::Sync(VmmAction::PrepareRemoveHostDevice(
+            id.to_string(),
+        )))
+        .with_context(|| format!("Prepare to remove host device {:?} failed", id))?;
+        Ok(())
+    }
+
+    pub fn remove_host_device(&self, id: &str) -> Result<()> {
+        info!(sl!(), "remove host device {}", id);
+        self.handle_request(Request::Sync(VmmAction::RemoveHostDevice(id.to_string())))
+            .with_context(|| format!("Failed to remove host device {:?}", id))?;
+        Ok(())
+    }
+
     pub fn insert_block_device(&self, device_cfg: BlockDeviceConfigInfo) -> Result<()> {
         self.handle_request_with_retry(Request::Sync(VmmAction::InsertBlockDevice(
             device_cfg.clone(),