dhcp

Documentation

Overview

* This file is part of the KubeVirt project * * 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. * * Copyright 2020 Red Hat, Inc. *

Index

• Constants
• func CreateListenConfig() net.ListenConfig
• func EthtoolTXOff(name string) error
• func SingleClientDHCPServer(clientMAC net.HardwareAddr, clientIP net.IP, clientMask net.IPMask, ...) error
• type DHCPHandler
  • func (h *DHCPHandler) ServeDHCP(p dhcp.Packet, msgType dhcp.MessageType, _ dhcp.Options) (d dhcp.Packet)
• type EthtoolValue
• type IFReqData
• type ServeIfConn
  • func NewUDP4FilterListener(interfaceName, laddr string) (c ServeIfConn, e error)

Constants

const (
	SIOCETHTOOL     = 0x8946     // linux/sockios.h
	ETHTOOL_GTXCSUM = 0x00000016 // linux/ethtool.h
	ETHTOOL_STXCSUM = 0x00000017 // linux/ethtool.h
	IFNAMSIZ        = 16         // linux/if.h
)

Functions

func CreateListenConfig

func CreateListenConfig() net.ListenConfig

func EthtoolTXOff

func EthtoolTXOff(name string) error

Disable TX checksum offload on specified interface

func SingleClientDHCPServer

func SingleClientDHCPServer(
	clientMAC net.HardwareAddr,
	clientIP net.IP,
	clientMask net.IPMask,
	serverIface string,
	serverIP net.IP,
	routerIP net.IP,
	dnsIPs [][]byte,
	routes *[]netlink.Route,
	searchDomains []string,
	mtu uint16,
	customDHCPOptions *v1.DHCPOptions) error

Types

type DHCPHandler

type DHCPHandler struct {
	// contains filtered or unexported fields
}

func (*DHCPHandler) ServeDHCP

func (h *DHCPHandler) ServeDHCP(p dhcp.Packet, msgType dhcp.MessageType, _ dhcp.Options) (d dhcp.Packet)

type EthtoolValue

type EthtoolValue struct {
	Cmd  uint32
	Data uint32
}

linux/ethtool.h 'struct ethtool_value'

type IFReqData

type IFReqData struct {
	Name [IFNAMSIZ]byte
	Data uintptr
}

linux/if.h 'struct ifreq'

type ServeIfConn

type ServeIfConn interface {
	ReadFrom(b []byte) (n int, addr net.Addr, err error)
	WriteTo(b []byte, addr net.Addr) (n int, err error)
	Close() error
}

func NewUDP4FilterListener

func NewUDP4FilterListener(interfaceName, laddr string) (c ServeIfConn, e error)

Creates listener on all interfaces and then filters packets not received by interfaceName