mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-12-03 15:31:05 +01:00
75 lines
2.1 KiB
Go
75 lines
2.1 KiB
Go
// Copyright 2020 The Prometheus 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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//
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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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//go:build !nonetdev
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// +build !nonetdev
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package collector
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import (
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"github.com/go-kit/log"
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"github.com/go-kit/log/level"
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"golang.org/x/sys/unix"
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"unsafe"
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)
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func getNetDevStats(filter *netDevFilter, logger log.Logger) (netDevStats, error) {
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netDev := netDevStats{}
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mib := [6]_C_int{unix.CTL_NET, unix.AF_ROUTE, 0, 0, unix.NET_RT_IFLIST, 0}
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buf, err := sysctl(mib[:])
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if err != nil {
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return nil, err
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}
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n := uintptr(len(buf))
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index := uintptr(unsafe.Pointer(&buf[0]))
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next := uintptr(0)
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var rtm *unix.RtMsghdr
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for next = index; next < (index + n); next += uintptr(rtm.Msglen) {
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rtm = (*unix.RtMsghdr)(unsafe.Pointer(next))
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if rtm.Version != unix.RTM_VERSION || rtm.Type != unix.RTM_IFINFO {
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continue
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}
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ifm := (*unix.IfMsghdr)(unsafe.Pointer(next))
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if ifm.Addrs&unix.RTA_IFP == 0 {
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continue
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}
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dl := (*unix.RawSockaddrDatalink)(unsafe.Pointer(next + uintptr(rtm.Hdrlen)))
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if dl.Family != unix.AF_LINK {
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continue
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}
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data := ifm.Data
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dev := int8ToString(dl.Data[:dl.Nlen])
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if filter.ignored(dev) {
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level.Debug(logger).Log("msg", "Ignoring device", "device", dev)
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continue
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}
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netDev[dev] = map[string]uint64{
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"receive_packets": data.Ipackets,
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"transmit_packets": data.Opackets,
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"receive_errs": data.Ierrors,
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"transmit_errs": data.Oerrors,
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"receive_bytes": data.Ibytes,
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"transmit_bytes": data.Obytes,
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"receive_multicast": data.Imcasts,
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"transmit_multicast": data.Omcasts,
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"receive_drop": data.Iqdrops,
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}
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}
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return netDev, nil
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}
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