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synced 2026-09-20 08:03:53 +08:00
111 lines
2.7 KiB
Go
111 lines
2.7 KiB
Go
// Copyright 2019 Yunion
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package isolated_device
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import (
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"fmt"
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"path"
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"strings"
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"yunion.io/x/log"
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"yunion.io/x/onecloud/pkg/util/fileutils2"
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"yunion.io/x/onecloud/pkg/util/procutils"
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)
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type sSRIOVBaseDevice struct {
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*SBaseDevice
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}
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func ensureNumvfsEqualTotalvfs(devDir string) error {
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sriovNumvfs := path.Join(devDir, "sriov_numvfs")
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sriovTotalvfs := path.Join(devDir, "sriov_totalvfs")
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numvfs, err := fileutils2.FileGetContents(sriovNumvfs)
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if err != nil {
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return err
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}
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totalvfs, err := fileutils2.FileGetContents(sriovTotalvfs)
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if err != nil {
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return err
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}
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log.Infof("numvfs %s total vfs %s", numvfs, totalvfs)
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if numvfs != totalvfs {
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return fileutils2.FilePutContents(sriovNumvfs, fmt.Sprintf("%s", totalvfs), false)
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}
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return nil
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}
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func detectSRIOVDevice(vfBDF string) (*PCIDevice, error) {
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dev, err := detectPCIDevByAddrWithoutIOMMUGroup(vfBDF)
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if err != nil {
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return nil, err
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}
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driver, err := dev.getKernelDriver()
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if err != nil {
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return nil, err
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}
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if driver == VFIO_PCI_KERNEL_DRIVER {
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return dev, nil
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}
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if driver != "" {
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if err = dev.unbindDriver(); err != nil {
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return nil, err
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}
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}
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if err = dev.bindDriver(); err != nil {
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return nil, err
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}
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return dev, nil
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}
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func newSRIOVBaseDevice(dev *PCIDevice, devType, sharingMode string) *sSRIOVBaseDevice {
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return &sSRIOVBaseDevice{
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SBaseDevice: NewBaseDevice(dev, devType, sharingMode),
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}
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}
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func (dev *sSRIOVBaseDevice) GetVGACmd() string {
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return ""
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}
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func (dev *sSRIOVBaseDevice) GetCPUCmd() string {
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return ""
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}
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func (dev *sSRIOVBaseDevice) GetWireId() string {
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return ""
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}
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func (dev *sSRIOVBaseDevice) GetQemuId() string {
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return fmt.Sprintf("dev_%s", strings.ReplaceAll(dev.GetAddr(), ":", "_"))
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}
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func (dev *sSRIOVBaseDevice) CustomProbe(idx int) error {
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// check environments on first probe
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if idx == 0 {
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for _, driver := range []string{"vfio", "vfio_iommu_type1", "vfio-pci"} {
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if err := procutils.NewRemoteCommandAsFarAsPossible("modprobe", driver).Run(); err != nil {
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return fmt.Errorf("modprobe %s: %v", driver, err)
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}
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}
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}
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driver, err := dev.GetKernelDriver()
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if err != nil {
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return fmt.Errorf("Nic %s is occupied by another driver: %s", dev.GetAddr(), driver)
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}
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return nil
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}
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