Documentation
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Overview ¶
Package netdevs contains utilities for working with network devices.
Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func MACToIP ¶
func MACToIP(mac net.HardwareAddr) net.IP
MACToIP converts the MAC address to an IPv6 link local address as described in RFC 4291 page 20: https://tools.ietf.org/html/rfc4291#page-20
func ParseDevices ¶
func ParseDevices(cmdOutput string) (map[string]DeviceInfo, error)
ParseDevices parses the output from `ip addr show` into a map from device name to information about the device.
Note: if multiple IPv6 addresses are assigned to a device, the last address displayed by `ip addr show` will be used. This is fine for packetimpact because we will always only have at most one IPv6 address assigned to each device.
func ParseDevicesWithRegex ¶
func ParseDevicesWithRegex(cmdOutput string, deviceLine, linkLine, inetLine, inet6Line *regexp.Regexp) (map[string]DeviceInfo, error)
ParseDevicesWithRegex will parse the output with the given regexps to produce a map from device name to device information. It is assumed that deviceLine contains both a name and an ID.
Types ¶
type DeviceInfo ¶
type DeviceInfo struct {
ID uint32
MAC net.HardwareAddr
IPv4Addr net.IP
IPv4Net *net.IPNet
IPv6Addr net.IP
IPv6Net *net.IPNet
}
A DeviceInfo represents a network device.
func FindDeviceByIP ¶
func FindDeviceByIP(ip net.IP, devices map[string]DeviceInfo) (string, DeviceInfo, error)
FindDeviceByIP finds a DeviceInfo and device name from an IP address in the output of ParseDevices.
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