src/vhost_user/mod.rs

2 // SPDX-License-Identifier: Apache-2.0
51     #[error("Failed binding vhost-user socket")]
67     #[error("Failed to open vhost device")]
79     #[error("Vhost-user Backend not support vhost-user protocol")]
113     #[error("Add memory region failed")]
127     #[error("Invalid features provided from vhost-user backend")]
135     #[error("Migration is not supported by this vhost-user device")]
187     ) -> std::result::Result<(), EpollHelperError> {  in run()
204     fn reconnect(&mut self, helper: &mut EpollHelper) -> std::result::Result<(), EpollHelperError> {  in reconnect()
219                 "failed connecting vhost-user backend {e:?}"  in reconnect()
239                     "failed reconnecting vhost-user backend: {e:?}"  in reconnect()
249         // Update vhost-user reference  in reconnect()
262     ) -> std::result::Result<(), EpollHelperError> {  in handle_event()
268                         "failed to reconnect vhost-user backend: {:?}",  in handle_event()
277                             "Failed to handle request from vhost-user backend: {:?}",  in handle_event()
285                     "Unknown event for vhost-user thread"  in handle_event()
315     ) -> std::result::Result<VhostUserEpollHandler<T>, ActivateError> {  in activate()
325             error!("Missing vhost-user handle");  in activate()
360     pub fn restore_backend_connection(&mut self, acked_features: u64) -> Result<()> {  in restore_backend_connection()
391     ) -> std::result::Result<(), crate::Error> {  in add_memory_region()
412     pub fn pause(&mut self) -> std::result::Result<(), MigratableError> {  in pause()
415                 MigratableError::Pause(anyhow!("Error pausing vhost-user backend: {:?}", e))  in pause()
422     pub fn resume(&mut self) -> std::result::Result<(), MigratableError> {  in resume()
425                 MigratableError::Resume(anyhow!("Error resuming vhost-user backend: {:?}", e))  in resume()
432     pub fn snapshot<'a, T>(&mut self, state: &T) -> std::result::Result<Snapshot, MigratableError>  in snapshot()
448     ) -> std::result::Result<(), MigratableError> {  in start_dirty_log()
457                             "Error starting migration for vhost-user backend: {:?}",  in start_dirty_log()
471     pub fn stop_dirty_log(&mut self) -> std::result::Result<(), MigratableError> {  in stop_dirty_log()
475                     "Error stopping migration for vhost-user backend: {:?}",  in stop_dirty_log()
487     ) -> std::result::Result<MemoryRangeTable, MigratableError> {  in dirty_log()
493                         "Error retrieving dirty ranges from vhost-user backend: {:?}",  in dirty_log()
505     pub fn start_migration(&mut self) -> std::result::Result<(), MigratableError> {  in start_migration()
513     ) -> std::result::Result<(), MigratableError> {  in complete_migration()
516         // Make sure the device thread is killed in order to prevent from  in complete_migration()
521                     "Error killing vhost-user thread: {:?}",  in complete_migration()
527         // Drop the vhost-user handler to avoid further calls to fail because  in complete_migration()