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117 lines
2.8 KiB
117 lines
2.8 KiB
// Copyright 2015 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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"bytes"
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"encoding/binary"
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"fmt"
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"net"
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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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)
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func getNetDevStats(filter *deviceFilter, logger log.Logger) (netDevStats, error) {
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netDev := netDevStats{}
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ifs, err := net.Interfaces()
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if err != nil {
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return nil, fmt.Errorf("net.Interfaces() failed: %w", err)
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}
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for _, iface := range ifs {
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if filter.ignored(iface.Name) {
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level.Debug(logger).Log("msg", "Ignoring device", "device", iface.Name)
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continue
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}
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ifaceData, err := getIfaceData(iface.Index)
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if err != nil {
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level.Debug(logger).Log("msg", "failed to load data for interface", "device", iface.Name, "err", err)
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continue
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}
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netDev[iface.Name] = map[string]uint64{
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"receive_packets": ifaceData.Data.Ipackets,
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"transmit_packets": ifaceData.Data.Opackets,
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"receive_errs": ifaceData.Data.Ierrors,
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"transmit_errs": ifaceData.Data.Oerrors,
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"receive_bytes": ifaceData.Data.Ibytes,
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"transmit_bytes": ifaceData.Data.Obytes,
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"receive_multicast": ifaceData.Data.Imcasts,
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"transmit_multicast": ifaceData.Data.Omcasts,
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}
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}
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return netDev, nil
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}
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func getIfaceData(index int) (*ifMsghdr2, error) {
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var data ifMsghdr2
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rawData, err := unix.SysctlRaw("net", unix.AF_ROUTE, 0, 0, unix.NET_RT_IFLIST2, index)
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if err != nil {
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return nil, err
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}
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err = binary.Read(bytes.NewReader(rawData), binary.LittleEndian, &data)
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return &data, err
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}
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type ifMsghdr2 struct {
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Msglen uint16
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Version uint8
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Type uint8
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Addrs int32
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Flags int32
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Index uint16
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_ [2]byte
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SndLen int32
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SndMaxlen int32
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SndDrops int32
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Timer int32
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Data ifData64
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}
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type ifData64 struct {
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Type uint8
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Typelen uint8
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Physical uint8
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Addrlen uint8
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Hdrlen uint8
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Recvquota uint8
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Xmitquota uint8
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Unused1 uint8
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Mtu uint32
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Metric uint32
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Baudrate uint64
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Ipackets uint64
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Ierrors uint64
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Opackets uint64
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Oerrors uint64
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Collisions uint64
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Ibytes uint64
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Obytes uint64
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Imcasts uint64
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Omcasts uint64
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Iqdrops uint64
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Noproto uint64
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Recvtiming uint32
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Xmittiming uint32
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Lastchange unix.Timeval32
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}
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