mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
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5b110fba2d
This change adds an nvcdi package that exposes a basic API for CDI spec generation. This is used from the nvidia-ctk cdi generate command and can be consumed by DRA implementations and the device plugin. Signed-off-by: Evan Lezar <elezar@nvidia.com>
77 lines
2.4 KiB
Go
77 lines
2.4 KiB
Go
/**
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# Copyright (c) NVIDIA CORPORATION. All rights reserved.
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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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"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/internal/lookup"
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"github.com/container-orchestrated-devices/container-device-interface/pkg/cdi"
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"github.com/sirupsen/logrus"
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"gitlab.com/nvidia/cloud-native/go-nvlib/pkg/nvml"
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)
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// GetCommonEdits generates a CDI specification that can be used for ANY devices
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func (l *nvcdilib) GetCommonEdits() (*cdi.ContainerEdits, error) {
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common, err := newCommonDiscoverer(l.logger, l.driverRoot, l.nvidiaCTKPath, l.nvmllib)
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if err != nil {
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return nil, fmt.Errorf("failed to create discoverer for common entities: %v", err)
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}
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return edits.FromDiscoverer(common)
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}
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// newCommonDiscoverer returns a discoverer for entities that are not associated with a specific CDI device.
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// This includes driver libraries and meta devices, for example.
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func newCommonDiscoverer(logger *logrus.Logger, driverRoot string, nvidiaCTKPath string, nvmllib nvml.Interface) (discover.Discover, error) {
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metaDevices := discover.NewDeviceDiscoverer(
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logger,
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lookup.NewCharDeviceLocator(
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lookup.WithLogger(logger),
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lookup.WithRoot(driverRoot),
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),
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driverRoot,
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[]string{
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"/dev/nvidia-modeset",
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"/dev/nvidia-uvm-tools",
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"/dev/nvidia-uvm",
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"/dev/nvidiactl",
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},
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)
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graphicsMounts, err := discover.NewGraphicsMountsDiscoverer(logger, driverRoot)
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if err != nil {
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return nil, fmt.Errorf("error constructing discoverer for graphics mounts: %v", err)
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}
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driverFiles, err := NewDriverDiscoverer(logger, driverRoot, nvidiaCTKPath, nvmllib)
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if err != nil {
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return nil, fmt.Errorf("failed to create discoverer for driver files: %v", err)
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}
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d := discover.Merge(
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metaDevices,
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graphicsMounts,
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driverFiles,
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)
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return d, nil
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}
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