37 lines
1.1 KiB
Go
37 lines
1.1 KiB
Go
//go:build linux
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// +build linux
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/*
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Copyright 2021 The Kubernetes Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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 e2enode
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import (
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"os/exec"
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"strconv"
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"strings"
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)
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// countSRIOVDevices provides a rough estimate of SRIOV Virtual Functions available on the system.
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// This is a rough check we use to rule out unsuitable systems, not to detect suitable systems.
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func countSRIOVDevices() (int, error) {
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outData, err := exec.Command("/bin/sh", "-c", "ls /sys/bus/pci/devices/*/physfn | wc -w").Output()
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if err != nil {
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return -1, err
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}
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return strconv.Atoi(strings.TrimSpace(string(outData)))
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}
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