mirror of
https://github.com/prometheus/node_exporter
synced 2024-12-18 04:15:06 +00:00
75 lines
2.1 KiB
Go
75 lines
2.1 KiB
Go
// Copyright 2020 The Prometheus Authors
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
//go:build !nonetdev
|
|
// +build !nonetdev
|
|
|
|
package collector
|
|
|
|
import (
|
|
"github.com/go-kit/log"
|
|
"github.com/go-kit/log/level"
|
|
|
|
"golang.org/x/sys/unix"
|
|
"unsafe"
|
|
)
|
|
|
|
func getNetDevStats(filter *netDevFilter, logger log.Logger) (netDevStats, error) {
|
|
netDev := netDevStats{}
|
|
|
|
mib := [6]_C_int{unix.CTL_NET, unix.AF_ROUTE, 0, 0, unix.NET_RT_IFLIST, 0}
|
|
buf, err := sysctl(mib[:])
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
n := uintptr(len(buf))
|
|
index := uintptr(unsafe.Pointer(&buf[0]))
|
|
next := uintptr(0)
|
|
|
|
var rtm *unix.RtMsghdr
|
|
|
|
for next = index; next < (index + n); next += uintptr(rtm.Msglen) {
|
|
rtm = (*unix.RtMsghdr)(unsafe.Pointer(next))
|
|
if rtm.Version != unix.RTM_VERSION || rtm.Type != unix.RTM_IFINFO {
|
|
continue
|
|
}
|
|
ifm := (*unix.IfMsghdr)(unsafe.Pointer(next))
|
|
if ifm.Addrs&unix.RTA_IFP == 0 {
|
|
continue
|
|
}
|
|
dl := (*unix.RawSockaddrDatalink)(unsafe.Pointer(next + uintptr(rtm.Hdrlen)))
|
|
if dl.Family != unix.AF_LINK {
|
|
continue
|
|
}
|
|
data := ifm.Data
|
|
dev := int8ToString(dl.Data[:dl.Nlen])
|
|
if filter.ignored(dev) {
|
|
level.Debug(logger).Log("msg", "Ignoring device", "device", dev)
|
|
continue
|
|
}
|
|
|
|
netDev[dev] = map[string]uint64{
|
|
"receive_packets": data.Ipackets,
|
|
"transmit_packets": data.Opackets,
|
|
"receive_errs": data.Ierrors,
|
|
"transmit_errs": data.Oerrors,
|
|
"receive_bytes": data.Ibytes,
|
|
"transmit_bytes": data.Obytes,
|
|
"receive_multicast": data.Imcasts,
|
|
"transmit_multicast": data.Omcasts,
|
|
"receive_drop": data.Iqdrops,
|
|
}
|
|
}
|
|
return netDev, nil
|
|
}
|