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package netlink
import (
"syscall"
"unsafe"
"golang.org/x/sys/unix"
)
// ioctl for statistics.
const (
// ETHTOOL_GSSET_INFO gets string set info
ETHTOOL_GSSET_INFO = 0x00000037
// SIOCETHTOOL is Ethtool interface
SIOCETHTOOL = 0x8946
// ETHTOOL_GSTRINGS gets specified string set
ETHTOOL_GSTRINGS = 0x0000001b
// ETHTOOL_GSTATS gets NIC-specific statistics
ETHTOOL_GSTATS = 0x0000001d
)
// string set id.
const (
// ETH_SS_TEST is self-test result names, for use with %ETHTOOL_TEST
ETH_SS_TEST = iota
// ETH_SS_STATS statistic names, for use with %ETHTOOL_GSTATS
ETH_SS_STATS
// ETH_SS_PRIV_FLAGS are driver private flag names
ETH_SS_PRIV_FLAGS
// _ETH_SS_NTUPLE_FILTERS is deprecated
_ETH_SS_NTUPLE_FILTERS
// ETH_SS_FEATURES are device feature names
ETH_SS_FEATURES
// ETH_SS_RSS_HASH_FUNCS is RSS hush function names
ETH_SS_RSS_HASH_FUNCS
)
// IfreqSlave is a struct for ioctl bond manipulation syscalls.
// It is used to assign slave to bond interface with Name.
type IfreqSlave struct {
Name [unix.IFNAMSIZ]byte
Slave [unix.IFNAMSIZ]byte
}
// Ifreq is a struct for ioctl ethernet manipulation syscalls.
type Ifreq struct {
Name [unix.IFNAMSIZ]byte
Data uintptr
}
// ethtoolSset is a string set information
type ethtoolSset struct {
cmd uint32
reserved uint32
mask uint64
data [1]uint32
}
type ethtoolStats struct {
cmd uint32
nStats uint32
// Followed by nStats * []uint64.
}
// newIocltSlaveReq returns filled IfreqSlave with proper interface names
// It is used by ioctl to assign slave to bond master
func newIocltSlaveReq(slave, master string) *IfreqSlave {
ifreq := &IfreqSlave{}
copy(ifreq.Name[:unix.IFNAMSIZ-1], master)
copy(ifreq.Slave[:unix.IFNAMSIZ-1], slave)
return ifreq
}
// newIocltStringSetReq creates request to get interface string set
func newIocltStringSetReq(linkName string) (*Ifreq, *ethtoolSset) {
e := ðtoolSset{
cmd: ETHTOOL_GSSET_INFO,
mask: 1 << ETH_SS_STATS,
}
ifreq := &Ifreq{Data: uintptr(unsafe.Pointer(e))}
copy(ifreq.Name[:unix.IFNAMSIZ-1], linkName)
return ifreq, e
}
// getSocketUDP returns file descriptor to new UDP socket
// It is used for communication with ioctl interface.
func getSocketUDP() (int, error) {
return syscall.Socket(unix.AF_INET, unix.SOCK_DGRAM, 0)
}
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