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virtio-devices: Use NetCtrlEpollHandler in vhost-user-net

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Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford 2022-03-14 16:29:04 +00:00
parent 21a9ae3459
commit aa3ef70ea6
2 changed files with 16 additions and 63 deletions
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4
virtio-devices/src/net.rs
View File

@ -53,8 +53,8 @@ pub struct NetCtrlEpollHandler {
pub queue_evt: EventFd,
pub queue: Queue<GuestMemoryAtomic<GuestMemoryMmap>>,
pub access_platform: Option<Arc<dyn AccessPlatform>>,
interrupt_cb: Arc<dyn VirtioInterrupt>,
queue_index: u16,
pub interrupt_cb: Arc<dyn VirtioInterrupt>,
pub queue_index: u16,
}
impl NetCtrlEpollHandler {

75
virtio-devices/src/vhost_user/net.rs
View File

@ -6,16 +6,13 @@ use crate::thread_helper::spawn_virtio_thread;
use crate::vhost_user::vu_common_ctrl::{VhostUserConfig, VhostUserHandle};
use crate::vhost_user::{Error, Result, VhostUserCommon};
use crate::{
ActivateResult, EpollHelper, EpollHelperError, EpollHelperHandler, VirtioCommon, VirtioDevice,
VirtioDeviceType, VirtioInterrupt, EPOLL_HELPER_EVENT_LAST, VIRTIO_F_RING_EVENT_IDX,
VIRTIO_F_VERSION_1,
ActivateResult, NetCtrlEpollHandler, VirtioCommon, VirtioDevice, VirtioDeviceType,
VirtioInterrupt, VIRTIO_F_RING_EVENT_IDX, VIRTIO_F_VERSION_1,
};
use crate::{GuestMemoryMmap, GuestRegionMmap};
use net_util::{build_net_config_space, CtrlQueue, MacAddr, VirtioNetConfig};
use seccompiler::SeccompAction;
use std::os::unix::io::AsRawFd;
use std::result;
use std::sync::atomic::AtomicBool;
use std::sync::{Arc, Barrier, Mutex};
use std::thread;
use std::vec::Vec;
@ -29,6 +26,7 @@ use virtio_bindings::bindings::virtio_net::{
VIRTIO_NET_F_HOST_ECN, VIRTIO_NET_F_HOST_TSO4, VIRTIO_NET_F_HOST_TSO6, VIRTIO_NET_F_HOST_UFO,
VIRTIO_NET_F_MAC, VIRTIO_NET_F_MRG_RXBUF,
};
use virtio_bindings::bindings::virtio_ring::VIRTIO_RING_F_EVENT_IDX;
use virtio_queue::Queue;
use vm_memory::{ByteValued, GuestMemoryAtomic};
use vm_migration::{
@ -53,57 +51,6 @@ impl VersionMapped for State {}
struct SlaveReqHandler {}
impl VhostUserMasterReqHandler for SlaveReqHandler {}
/// Control queue
// Event available on the control queue.
const CTRL_QUEUE_EVENT: u16 = EPOLL_HELPER_EVENT_LAST + 1;
pub struct NetCtrlEpollHandler {
pub mem: GuestMemoryAtomic<GuestMemoryMmap>,
pub kill_evt: EventFd,
pub pause_evt: EventFd,
pub ctrl_q: CtrlQueue,
pub queue_evt: EventFd,
pub queue: Queue<GuestMemoryAtomic<GuestMemoryMmap>>,
}
impl NetCtrlEpollHandler {
pub fn run_ctrl(
&mut self,
paused: Arc<AtomicBool>,
paused_sync: Arc<Barrier>,
) -> std::result::Result<(), EpollHelperError> {
let mut helper = EpollHelper::new(&self.kill_evt, &self.pause_evt)?;
helper.add_event(self.queue_evt.as_raw_fd(), CTRL_QUEUE_EVENT)?;
helper.run(paused, paused_sync, self)?;
Ok(())
}
}
impl EpollHelperHandler for NetCtrlEpollHandler {
fn handle_event(&mut self, _helper: &mut EpollHelper, event: &epoll::Event) -> bool {
let ev_type = event.data as u16;
match ev_type {
CTRL_QUEUE_EVENT => {
if let Err(e) = self.queue_evt.read() {
error!("failed to get ctl queue event: {:?}", e);
return true;
}
if let Err(e) = self.ctrl_q.process(&mut self.queue, None) {
error!("failed to process ctrl queue: {:?}", e);
return true;
}
}
_ => {
error!("Unknown event for virtio-net");
return true;
}
}
false
}
}
pub struct Net {
common: VirtioCommon,
vu_common: VhostUserCommon,
@ -323,19 +270,25 @@ impl VirtioDevice for Net {
self.guest_memory = Some(mem.clone());
let num_queues = queues.len();
let event_idx = self.common.feature_acked(VIRTIO_RING_F_EVENT_IDX.into());
if self.common.feature_acked(VIRTIO_NET_F_CTRL_VQ.into()) && num_queues % 2 != 0 {
let cvq_queue = queues.remove(num_queues - 1);
let cvq_queue_evt = queue_evts.remove(num_queues - 1);
let ctrl_queue_index = num_queues - 1;
let mut ctrl_queue = queues.remove(ctrl_queue_index);
let ctrl_queue_evt = queue_evts.remove(ctrl_queue_index);
ctrl_queue.set_event_idx(event_idx);
let (kill_evt, pause_evt) = self.common.dup_eventfds();
let mut ctrl_handler = NetCtrlEpollHandler {
mem: mem.clone(),
kill_evt,
pause_evt,
ctrl_q: CtrlQueue::new(Vec::new()),
queue: cvq_queue,
queue_evt: cvq_queue_evt,
queue: ctrl_queue,
queue_evt: ctrl_queue_evt,
access_platform: None,
interrupt_cb: interrupt_cb.clone(),
queue_index: ctrl_queue_index as u16,
};
let paused = self.common.paused.clone();