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vm-virtio: Implement multiple queue support for net devices

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Update the common part in net_util.rs under vm-virtio to add mq
support, meanwhile enable mq for virtio-net device, vhost-user-net
device and vhost-user-net backend. Multiple threads will be created,
one thread will be responsible to handle one queue pair separately.
To gain the better performance, it requires to have the same amount
of vcpus as queue pair numbers defined for the net device, due to
the cpu affinity.

Multiple thread support is not added for vhost-user-net backend
currently, it will be added in future.

Signed-off-by: Cathy Zhang <cathy.zhang@intel.com>
This commit is contained in:
Cathy Zhang
2020-01-10 01:29:00 +08:00
committed by Sebastien Boeuf
parent 404316eea1
commit 652e7b9b8a
7 changed files with 353 additions and 169 deletions
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vmm/src/device_manager.rs
+15 -6
View File
@@ -24,7 +24,6 @@ use kvm_bindings::kvm_irq_routing_entry;
use kvm_ioctls::*;
use libc::O_TMPFILE;
use libc::TIOCGWINSZ;
use net_util::Tap;
#[cfg(feature = "pci_support")]
use pci::{
DeviceRelocation, InterruptDelivery, InterruptParameters, PciBarRegionType, PciBus,
@@ -991,18 +990,28 @@ impl DeviceManager {
if let Some(net_list_cfg) = &vm_info.vm_cfg.lock().unwrap().net {
for net_cfg in net_list_cfg.iter() {
let virtio_net_device = if let Some(ref tap_if_name) = net_cfg.tap {
let tap = Tap::open_named(tap_if_name, 1).map_err(DeviceManagerError::OpenTap)?;
Arc::new(Mutex::new(
vm_virtio::Net::new_with_tap(tap, Some(net_cfg.mac), net_cfg.iommu)
.map_err(DeviceManagerError::CreateVirtioNet)?,
vm_virtio::Net::new(
Some(tap_if_name),
None,
None,
Some(net_cfg.mac),
net_cfg.iommu,
net_cfg.num_queues,
net_cfg.queue_size,
)
.map_err(DeviceManagerError::CreateVirtioNet)?,
))
} else {
Arc::new(Mutex::new(
vm_virtio::Net::new(
net_cfg.ip,
net_cfg.mask,
None,
Some(net_cfg.ip),
Some(net_cfg.mask),
Some(net_cfg.mac),
net_cfg.iommu,
net_cfg.num_queues,
net_cfg.queue_size,
)
.map_err(DeviceManagerError::CreateVirtioNet)?,
))