mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
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0134ba4250
This change allows device IDs to the specified in the GetSpec API. This simplifies cases where CDI specs are being generated for specific devices by ID. Signed-off-by: Evan Lezar <elezar@nvidia.com>
119 lines
3.5 KiB
Go
119 lines
3.5 KiB
Go
/**
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# Copyright 2024 NVIDIA CORPORATION
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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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**/
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package nvcdi
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import (
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"fmt"
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"path/filepath"
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"strconv"
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"strings"
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"tags.cncf.io/container-device-interface/pkg/cdi"
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"tags.cncf.io/container-device-interface/specs-go"
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"github.com/NVIDIA/go-nvlib/pkg/nvlib/device"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/discover"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/edits"
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"github.com/NVIDIA/nvidia-container-toolkit/pkg/nvcdi/spec"
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)
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type imexlib nvcdilib
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var _ Interface = (*imexlib)(nil)
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const (
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classImexChannel = "imex-channel"
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)
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// GetSpec should not be called for imexlib.
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func (l *imexlib) GetSpec(...string) (spec.Interface, error) {
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return nil, fmt.Errorf("unexpected call to imexlib.GetSpec()")
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}
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// GetAllDeviceSpecs returns the device specs for all available devices.
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func (l *imexlib) GetAllDeviceSpecs() ([]specs.Device, error) {
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channelsDiscoverer := discover.NewCharDeviceDiscoverer(
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l.logger,
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l.devRoot,
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[]string{"/dev/nvidia-caps-imex-channels/channel*"},
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)
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channels, err := channelsDiscoverer.Devices()
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if err != nil {
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return nil, err
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}
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var channelIDs []string
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for _, channel := range channels {
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channelIDs = append(channelIDs, filepath.Base(channel.Path))
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}
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return l.GetDeviceSpecsByID(channelIDs...)
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}
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// GetCommonEdits returns an empty set of edits for IMEX devices.
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func (l *imexlib) GetCommonEdits() (*cdi.ContainerEdits, error) {
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return edits.FromDiscoverer(discover.None{})
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}
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// GetDeviceSpecsByID returns the CDI device specs for the IMEX channels specified.
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func (l *imexlib) GetDeviceSpecsByID(ids ...string) ([]specs.Device, error) {
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var deviceSpecs []specs.Device
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for _, id := range ids {
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trimmed := strings.TrimPrefix(id, "channel")
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_, err := strconv.ParseUint(trimmed, 10, 64)
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if err != nil {
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return nil, fmt.Errorf("invalid channel ID %v: %w", id, err)
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}
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path := "/dev/nvidia-caps-imex-channels/channel" + trimmed
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deviceSpec := specs.Device{
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Name: trimmed,
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ContainerEdits: specs.ContainerEdits{
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DeviceNodes: []*specs.DeviceNode{
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{
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Path: path,
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HostPath: filepath.Join(l.devRoot, path),
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},
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},
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},
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}
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deviceSpecs = append(deviceSpecs, deviceSpec)
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}
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return deviceSpecs, nil
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}
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// GetGPUDeviceEdits is unsupported for the imexlib specs
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func (l *imexlib) GetGPUDeviceEdits(device.Device) (*cdi.ContainerEdits, error) {
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return nil, fmt.Errorf("GetGPUDeviceEdits is not supported")
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}
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// GetGPUDeviceSpecs is unsupported for the imexlib specs
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func (l *imexlib) GetGPUDeviceSpecs(int, device.Device) ([]specs.Device, error) {
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return nil, fmt.Errorf("GetGPUDeviceSpecs is not supported")
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}
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// GetMIGDeviceEdits is unsupported for the imexlib specs
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func (l *imexlib) GetMIGDeviceEdits(device.Device, device.MigDevice) (*cdi.ContainerEdits, error) {
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return nil, fmt.Errorf("GetMIGDeviceEdits is not supported")
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}
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// GetMIGDeviceSpecs is unsupported for the imexlib specs
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func (l *imexlib) GetMIGDeviceSpecs(int, device.Device, int, device.MigDevice) ([]specs.Device, error) {
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return nil, fmt.Errorf("GetMIGDeviceSpecs is not supported")
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}
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