mirror of
https://github.com/intel/intel-device-plugins-for-kubernetes.git
synced 2025-06-03 03:59:37 +00:00
de9df8373e
Extended fpga plugin to support both in-tree(DFL) and out-of-tree (OPAE) kernel drivers. - fpga_crihook: move JSON parsing to separate functions - decreased cyclomatic complexity of the CRI hook main() function - increased readability - increased test coverage Signed-off-by: Ed Bartosh <eduard.bartosh@intel.com>
110 lines
3.0 KiB
Go
110 lines
3.0 KiB
Go
// Copyright 2019 Intel 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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package main
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import (
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"fmt"
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"os"
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"path"
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"path/filepath"
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"regexp"
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"github.com/pkg/errors"
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)
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const (
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dflDeviceRE = `^region[0-9]+$`
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dflPortRE = `^dfl-port\.[0-9]+$`
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dflFmeRE = `^dfl-fme\.[0-9]+$`
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)
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// getDFLRegion reads FME interface id from /sys/fpga/fpga_region/regionX/dfl-fme.k/dfl-fme-region.n/fpga_region/regionN/compat_id
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func (dp *devicePlugin) getDFLRegion(regionFolder string, fme string) (*region, error) {
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compatIDPattern := path.Join(regionFolder, fme, "dfl-fme-region.*", "fpga_region", "region*", "compat_id")
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matches, err := filepath.Glob(compatIDPattern)
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if err != nil {
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return nil, err
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}
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if len(matches) == 0 {
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return nil, fmt.Errorf("no compat_id found with pattern '%s'", compatIDPattern)
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}
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if len(matches) > 1 {
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return nil, fmt.Errorf("compat_id path pattern '%s' matches multiple files", compatIDPattern)
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}
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reg, err := dp.getFME(matches[0], fme)
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if err != nil {
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return nil, err
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}
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return reg, nil
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}
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func getSysFsInfoDFL(dp *devicePlugin, deviceFolder string, deviceFiles []os.FileInfo, fname string) ([]region, []afu, error) {
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var regions []region
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var afus []afu
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for _, deviceFile := range deviceFiles {
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name := deviceFile.Name()
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if dp.fmeReg.MatchString(name) {
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if len(regions) > 0 {
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return nil, nil, errors.Errorf("Detected more than one FPGA region for device %s. Only one region per FPGA device is supported", fname)
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}
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region, err := dp.getDFLRegion(deviceFolder, name)
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if err != nil {
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return nil, nil, err
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}
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regions = append(regions, *region)
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} else if dp.portReg.MatchString(name) {
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afuPath := path.Join(deviceFolder, name, "afu_id")
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afu, err := dp.getAFU(afuPath, name)
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if err != nil {
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return nil, nil, err
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}
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afus = append(afus, *afu)
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}
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}
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return regions, afus, nil
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}
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// newDevicePluginDFL returns new instance of devicePlugin
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func newDevicePluginDFL(sysfsDir string, devfsDir string, mode string) (*devicePlugin, error) {
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getDevTree, ignoreAfuIDs, annotationValue, err := getPluginParams(mode)
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if err != nil {
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return nil, err
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}
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return &devicePlugin{
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name: "DFL",
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sysfsDir: sysfsDir,
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devfsDir: devfsDir,
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deviceReg: regexp.MustCompile(dflDeviceRE),
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portReg: regexp.MustCompile(dflPortRE),
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fmeReg: regexp.MustCompile(dflFmeRE),
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getDevTree: getDevTree,
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getSysFsInfo: getSysFsInfoDFL,
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ignoreEmptyRegions: true,
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ignoreAfuIDs: ignoreAfuIDs,
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annotationValue: annotationValue,
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}, nil
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}
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