mirror of
https://github.com/cloud-hypervisor/cloud-hypervisor.git
synced 2025-02-22 03:12:27 +00:00
virtio-devices: net: Remove unnecessary Option<> around tap
This doesn't serve any benefit and just makes the code more complex. Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford
Sebastien Boeuf
parent
fbc7011346
commit
9ef1a68539
@ -285,7 +285,7 @@ impl EpollHelperHandler for NetEpollHandler {
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pub struct Net {
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common: VirtioCommon,
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id: String,
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taps: Option<Vec<Tap>>,
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taps: Vec<Tap>,
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config: VirtioNetConfig,
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ctrl_queue_epoll_thread: Option<thread::JoinHandle<()>>,
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counters: NetCounters,
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@ -351,7 +351,7 @@ impl Net {
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..Default::default()
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},
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id,
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taps: Some(taps),
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taps,
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config,
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ctrl_queue_epoll_thread: None,
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counters: NetCounters::default(),
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@ -479,173 +479,171 @@ impl VirtioDevice for Net {
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mut queues: Vec<Queue>,
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mut queue_evts: Vec<EventFd>,
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) -> ActivateResult {
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if let Some(mut taps) = self.taps.clone() {
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self.common.activate(&queues, &queue_evts, &interrupt_cb)?;
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self.common.activate(&queues, &queue_evts, &interrupt_cb)?;
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let queue_num = queues.len();
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if self.common.feature_acked(VIRTIO_NET_F_CTRL_VQ.into()) && queue_num % 2 != 0 {
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let cvq_queue = queues.remove(queue_num - 1);
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let cvq_queue_evt = queue_evts.remove(queue_num - 1);
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let queue_num = queues.len();
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if self.common.feature_acked(VIRTIO_NET_F_CTRL_VQ.into()) && queue_num % 2 != 0 {
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let cvq_queue = queues.remove(queue_num - 1);
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let cvq_queue_evt = queue_evts.remove(queue_num - 1);
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let kill_evt = self
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.common
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.kill_evt
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.as_ref()
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.unwrap()
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.try_clone()
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.map_err(|e| {
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error!("failed to clone kill_evt eventfd: {}", e);
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ActivateError::BadActivate
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})?;
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let pause_evt = self
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.common
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.pause_evt
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.as_ref()
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.unwrap()
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.try_clone()
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.map_err(|e| {
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error!("failed to clone pause_evt eventfd: {}", e);
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ActivateError::BadActivate
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})?;
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let kill_evt = self
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.common
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.kill_evt
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.as_ref()
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.unwrap()
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.try_clone()
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.map_err(|e| {
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error!("failed to clone kill_evt eventfd: {}", e);
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ActivateError::BadActivate
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})?;
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let pause_evt = self
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.common
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.pause_evt
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.as_ref()
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.unwrap()
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.try_clone()
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.map_err(|e| {
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error!("failed to clone pause_evt eventfd: {}", e);
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ActivateError::BadActivate
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})?;
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let mut ctrl_handler = NetCtrlEpollHandler {
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mem: mem.clone(),
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kill_evt,
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pause_evt,
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ctrl_q: NetCtrl::new(cvq_queue, cvq_queue_evt),
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};
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let mut ctrl_handler = NetCtrlEpollHandler {
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mem: mem.clone(),
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kill_evt,
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pause_evt,
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ctrl_q: NetCtrl::new(cvq_queue, cvq_queue_evt),
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};
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let paused = self.common.paused.clone();
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// Let's update the barrier as we need 1 for each RX/TX pair +
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// 1 for the control queue + 1 for the main thread signalling
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// the pause.
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self.common.paused_sync = Some(Arc::new(Barrier::new(taps.len() + 2)));
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let paused_sync = self.common.paused_sync.clone();
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let paused = self.common.paused.clone();
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// Let's update the barrier as we need 1 for each RX/TX pair +
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// 1 for the control queue + 1 for the main thread signalling
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// the pause.
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self.common.paused_sync = Some(Arc::new(Barrier::new(self.taps.len() + 2)));
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let paused_sync = self.common.paused_sync.clone();
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// Retrieve seccomp filter for virtio_net_ctl thread
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let virtio_net_ctl_seccomp_filter =
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get_seccomp_filter(&self.seccomp_action, Thread::VirtioNetCtl)
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.map_err(ActivateError::CreateSeccompFilter)?;
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thread::Builder::new()
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.name(format!("{}_ctrl", self.id))
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.spawn(move || {
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if let Err(e) = SeccompFilter::apply(virtio_net_ctl_seccomp_filter) {
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error!("Error applying seccomp filter: {:?}", e);
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} else if let Err(e) = ctrl_handler.run_ctrl(paused, paused_sync.unwrap()) {
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error!("Error running worker: {:?}", e);
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}
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})
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.map(|thread| self.ctrl_queue_epoll_thread = Some(thread))
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.map_err(|e| {
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error!("failed to clone queue EventFd: {}", e);
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ActivateError::BadActivate
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})?;
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}
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let event_idx = self.common.feature_acked(VIRTIO_RING_F_EVENT_IDX.into());
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let mut epoll_threads = Vec::new();
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for i in 0..taps.len() {
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let rx = RxVirtio::new();
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let tx = TxVirtio::new();
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let rx_tap_listening = false;
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let mut queue_pair = vec![queues.remove(0), queues.remove(0)];
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queue_pair[0].set_event_idx(event_idx);
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queue_pair[1].set_event_idx(event_idx);
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let queue_evt_pair = vec![queue_evts.remove(0), queue_evts.remove(0)];
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let kill_evt = self
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.common
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.kill_evt
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.as_ref()
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.unwrap()
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.try_clone()
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.map_err(|e| {
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error!("failed to clone kill_evt eventfd: {}", e);
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ActivateError::BadActivate
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})?;
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let pause_evt = self
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.common
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.pause_evt
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.as_ref()
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.unwrap()
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.try_clone()
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.map_err(|e| {
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error!("failed to clone pause_evt eventfd: {}", e);
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ActivateError::BadActivate
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})?;
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let rx_rate_limiter: Option<rate_limiter::RateLimiter> = self
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.rate_limiter_config
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.map(RateLimiterConfig::try_into)
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.transpose()
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.map_err(ActivateError::CreateRateLimiter)?;
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let tx_rate_limiter: Option<rate_limiter::RateLimiter> = self
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.rate_limiter_config
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.map(RateLimiterConfig::try_into)
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.transpose()
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.map_err(ActivateError::CreateRateLimiter)?;
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let tap = taps.remove(0);
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tap.set_offload(virtio_features_to_tap_offload(self.common.acked_features))
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.map_err(|e| {
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error!("Error programming tap offload: {:?}", e);
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ActivateError::BadActivate
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})?;
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let mut handler = NetEpollHandler {
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net: NetQueuePair {
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mem: Some(mem.clone()),
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tap,
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rx,
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tx,
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epoll_fd: None,
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rx_tap_listening,
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counters: self.counters.clone(),
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tap_event_id: RX_TAP_EVENT,
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rx_desc_avail: false,
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rx_rate_limiter,
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tx_rate_limiter,
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},
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queue_pair,
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queue_evt_pair,
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interrupt_cb: interrupt_cb.clone(),
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kill_evt,
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pause_evt,
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driver_awake: false,
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};
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let paused = self.common.paused.clone();
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let paused_sync = self.common.paused_sync.clone();
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// Retrieve seccomp filter for virtio_net thread
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let virtio_net_seccomp_filter =
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get_seccomp_filter(&self.seccomp_action, Thread::VirtioNet)
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.map_err(ActivateError::CreateSeccompFilter)?;
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thread::Builder::new()
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.name(format!("{}_qp{}", self.id.clone(), i))
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.spawn(move || {
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if let Err(e) = SeccompFilter::apply(virtio_net_seccomp_filter) {
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error!("Error applying seccomp filter: {:?}", e);
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} else if let Err(e) = handler.run(paused, paused_sync.unwrap()) {
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error!("Error running worker: {:?}", e);
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}
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})
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.map(|thread| epoll_threads.push(thread))
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.map_err(|e| {
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error!("failed to clone queue EventFd: {}", e);
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ActivateError::BadActivate
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})?;
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}
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self.common.epoll_threads = Some(epoll_threads);
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event!("virtio-device", "activated", "id", &self.id);
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return Ok(());
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// Retrieve seccomp filter for virtio_net_ctl thread
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let virtio_net_ctl_seccomp_filter =
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get_seccomp_filter(&self.seccomp_action, Thread::VirtioNetCtl)
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.map_err(ActivateError::CreateSeccompFilter)?;
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thread::Builder::new()
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.name(format!("{}_ctrl", self.id))
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.spawn(move || {
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if let Err(e) = SeccompFilter::apply(virtio_net_ctl_seccomp_filter) {
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error!("Error applying seccomp filter: {:?}", e);
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} else if let Err(e) = ctrl_handler.run_ctrl(paused, paused_sync.unwrap()) {
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error!("Error running worker: {:?}", e);
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}
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})
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.map(|thread| self.ctrl_queue_epoll_thread = Some(thread))
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.map_err(|e| {
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error!("failed to clone queue EventFd: {}", e);
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ActivateError::BadActivate
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})?;
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}
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Err(ActivateError::BadActivate)
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let event_idx = self.common.feature_acked(VIRTIO_RING_F_EVENT_IDX.into());
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let mut epoll_threads = Vec::new();
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let mut taps = self.taps.clone();
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for i in 0..taps.len() {
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let rx = RxVirtio::new();
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let tx = TxVirtio::new();
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let rx_tap_listening = false;
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let mut queue_pair = vec![queues.remove(0), queues.remove(0)];
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queue_pair[0].set_event_idx(event_idx);
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queue_pair[1].set_event_idx(event_idx);
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let queue_evt_pair = vec![queue_evts.remove(0), queue_evts.remove(0)];
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let kill_evt = self
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.common
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.kill_evt
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.as_ref()
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.unwrap()
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.try_clone()
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.map_err(|e| {
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error!("failed to clone kill_evt eventfd: {}", e);
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ActivateError::BadActivate
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})?;
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let pause_evt = self
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.common
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.pause_evt
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.as_ref()
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.unwrap()
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.try_clone()
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.map_err(|e| {
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error!("failed to clone pause_evt eventfd: {}", e);
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ActivateError::BadActivate
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})?;
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let rx_rate_limiter: Option<rate_limiter::RateLimiter> = self
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.rate_limiter_config
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.map(RateLimiterConfig::try_into)
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.transpose()
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.map_err(ActivateError::CreateRateLimiter)?;
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let tx_rate_limiter: Option<rate_limiter::RateLimiter> = self
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.rate_limiter_config
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.map(RateLimiterConfig::try_into)
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.transpose()
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.map_err(ActivateError::CreateRateLimiter)?;
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let tap = taps.remove(0);
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tap.set_offload(virtio_features_to_tap_offload(self.common.acked_features))
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.map_err(|e| {
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error!("Error programming tap offload: {:?}", e);
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ActivateError::BadActivate
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})?;
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let mut handler = NetEpollHandler {
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net: NetQueuePair {
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mem: Some(mem.clone()),
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tap,
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rx,
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tx,
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epoll_fd: None,
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rx_tap_listening,
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counters: self.counters.clone(),
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tap_event_id: RX_TAP_EVENT,
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rx_desc_avail: false,
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rx_rate_limiter,
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tx_rate_limiter,
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},
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queue_pair,
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queue_evt_pair,
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interrupt_cb: interrupt_cb.clone(),
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kill_evt,
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pause_evt,
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driver_awake: false,
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};
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let paused = self.common.paused.clone();
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let paused_sync = self.common.paused_sync.clone();
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// Retrieve seccomp filter for virtio_net thread
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let virtio_net_seccomp_filter =
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get_seccomp_filter(&self.seccomp_action, Thread::VirtioNet)
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.map_err(ActivateError::CreateSeccompFilter)?;
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thread::Builder::new()
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.name(format!("{}_qp{}", self.id.clone(), i))
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.spawn(move || {
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if let Err(e) = SeccompFilter::apply(virtio_net_seccomp_filter) {
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error!("Error applying seccomp filter: {:?}", e);
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} else if let Err(e) = handler.run(paused, paused_sync.unwrap()) {
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error!("Error running worker: {:?}", e);
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}
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})
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.map(|thread| epoll_threads.push(thread))
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.map_err(|e| {
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error!("failed to clone queue EventFd: {}", e);
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ActivateError::BadActivate
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})?;
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}
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self.common.epoll_threads = Some(epoll_threads);
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event!("virtio-device", "activated", "id", &self.id);
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Ok(())
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}
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fn reset(&mut self) -> Option<Arc<dyn VirtioInterrupt>> {
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