(&mut self, context: crate::device::ActivationContext)
| 685 | } |
| 686 | |
| 687 | fn activate(&mut self, context: crate::device::ActivationContext) -> ActivateResult { |
| 688 | let crate::device::ActivationContext { |
| 689 | mem, |
| 690 | interrupt_cb, |
| 691 | mut queues, |
| 692 | device_status, |
| 693 | } = context; |
| 694 | self.device_status = device_status; |
| 695 | self.common.activate(&queues, interrupt_cb.clone())?; |
| 696 | |
| 697 | let num_queues = queues.len(); |
| 698 | let event_idx = self.common.feature_acked(VIRTIO_RING_F_EVENT_IDX.into()); |
| 699 | |
| 700 | // Recompute the barrier size from the queues that are actually activated. |
| 701 | let has_ctrl_queue = |
| 702 | self.common.feature_acked(VIRTIO_NET_F_CTRL_VQ.into()) && !num_queues.is_multiple_of(2); |
| 703 | let ctrl_threads = if has_ctrl_queue { 1 } else { 0 }; |
| 704 | let qp_threads = (num_queues - ctrl_threads) / 2; |
| 705 | self.common.paused_sync = Some(Arc::new(Barrier::new(1 + qp_threads + ctrl_threads))); |
| 706 | |
| 707 | if has_ctrl_queue { |
| 708 | let ctrl_queue_index = num_queues - 1; |
| 709 | let (_, mut ctrl_queue, ctrl_queue_evt) = queues.remove(ctrl_queue_index); |
| 710 | |
| 711 | ctrl_queue.set_event_idx(event_idx); |
| 712 | |
| 713 | let (kill_evt, pause_evt) = self.common.dup_eventfds(); |
| 714 | let mut ctrl_handler = NetCtrlEpollHandler { |
| 715 | mem: mem.clone(), |
| 716 | kill_evt, |
| 717 | pause_evt, |
| 718 | ctrl_q: CtrlQueue::new(self.taps.clone()), |
| 719 | queue: ctrl_queue, |
| 720 | queue_evt: ctrl_queue_evt, |
| 721 | access_platform: self.common.access_platform(), |
| 722 | queue_index: ctrl_queue_index as u16, |
| 723 | interrupt_cb: interrupt_cb.clone(), |
| 724 | }; |
| 725 | |
| 726 | let paused = self.common.paused.clone(); |
| 727 | let paused_sync = self.common.paused_sync.clone(); |
| 728 | |
| 729 | let mut epoll_threads = Vec::new(); |
| 730 | spawn_virtio_thread( |
| 731 | &format!("{}_ctrl", &self.id), |
| 732 | &self.seccomp_action, |
| 733 | Thread::VirtioNetCtl, |
| 734 | &mut epoll_threads, |
| 735 | &self.exit_evt, |
| 736 | self.device_status.clone(), |
| 737 | interrupt_cb.clone(), |
| 738 | move || ctrl_handler.run_ctrl(&paused, paused_sync.as_ref().unwrap()), |
| 739 | )?; |
| 740 | self.ctrl_queue_epoll_thread = Some(epoll_threads.remove(0)); |
| 741 | } |
| 742 | |
| 743 | let mut epoll_threads = Vec::new(); |
| 744 | let mut taps = self.taps.clone(); |
nothing calls this directly
no test coverage detected