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vfio: Change the way the driver is fetched

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Instead of using ethtool for getting the driver for network
devices, use sysfs instead. This is because in case of virtio
devices, ethtool returns virtio-net instead of virtio-pci for
virtio network devices. We need to bind/unbind from virtio-pci
driver in case of virtio-net devices.

Fixes #612

Signed-off-by: Archana Shinde <archana.m.shinde@intel.com>
This commit is contained in:
Archana Shinde 2018-10-22 18:16:28 -07:00
parent 40ee885e8e
commit 31cf6fbe00
1 changed files with 6 additions and 2 deletions
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8
virtcontainers/physical_endpoint.go
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@ -8,6 +8,7 @@ package virtcontainers
import ( import (
"fmt" "fmt"
"io/ioutil" "io/ioutil"
"os"
"path/filepath" "path/filepath"
"strings" "strings"
@ -143,12 +144,15 @@ func createPhysicalEndpoint(netInfo NetworkInfo) (*PhysicalEndpoint, error) {
return nil, err return nil, err
} }
// Get Driver // Get driver by following symlink /sys/bus/pci/devices/$bdf/driver
driver, err := ethHandle.DriverName(netInfo.Iface.Name) driverPath := filepath.Join(sysPCIDevicesPath, bdf, "driver")
link, err := os.Readlink(driverPath)
if err != nil { if err != nil {
return nil, err return nil, err
} }
driver := filepath.Base(link)
// Get vendor and device id from pci space (sys/bus/pci/devices/$bdf) // Get vendor and device id from pci space (sys/bus/pci/devices/$bdf)
ifaceDevicePath := filepath.Join(sysPCIDevicesPath, bdf, "device") ifaceDevicePath := filepath.Join(sysPCIDevicesPath, bdf, "device")