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NetServices/lwip/include/netif/etharp.h@0:05ccbd4f84f1, 2013-12-02 (annotated)

Committer:
hendrikvincent
Date:
Mon Dec 02 09:01:23 2013 +0000
Revision:
0:05ccbd4f84f1
eerste programma;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hendrikvincent 0:05ccbd4f84f1 1 /*
hendrikvincent 0:05ccbd4f84f1 2 * Copyright (c) 2001-2003 Swedish Institute of Computer Science.
hendrikvincent 0:05ccbd4f84f1 3 * Copyright (c) 2003-2004 Leon Woestenberg <leon.woestenberg@axon.tv>
hendrikvincent 0:05ccbd4f84f1 4 * Copyright (c) 2003-2004 Axon Digital Design B.V., The Netherlands.
hendrikvincent 0:05ccbd4f84f1 5 * All rights reserved.
hendrikvincent 0:05ccbd4f84f1 6 *
hendrikvincent 0:05ccbd4f84f1 7 * Redistribution and use in source and binary forms, with or without modification,
hendrikvincent 0:05ccbd4f84f1 8 * are permitted provided that the following conditions are met:
hendrikvincent 0:05ccbd4f84f1 9 *
hendrikvincent 0:05ccbd4f84f1 10 * 1. Redistributions of source code must retain the above copyright notice,
hendrikvincent 0:05ccbd4f84f1 11 * this list of conditions and the following disclaimer.
hendrikvincent 0:05ccbd4f84f1 12 * 2. Redistributions in binary form must reproduce the above copyright notice,
hendrikvincent 0:05ccbd4f84f1 13 * this list of conditions and the following disclaimer in the documentation
hendrikvincent 0:05ccbd4f84f1 14 * and/or other materials provided with the distribution.
hendrikvincent 0:05ccbd4f84f1 15 * 3. The name of the author may not be used to endorse or promote products
hendrikvincent 0:05ccbd4f84f1 16 * derived from this software without specific prior written permission.
hendrikvincent 0:05ccbd4f84f1 17 *
hendrikvincent 0:05ccbd4f84f1 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
hendrikvincent 0:05ccbd4f84f1 19 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
hendrikvincent 0:05ccbd4f84f1 20 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
hendrikvincent 0:05ccbd4f84f1 21 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
hendrikvincent 0:05ccbd4f84f1 22 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
hendrikvincent 0:05ccbd4f84f1 23 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
hendrikvincent 0:05ccbd4f84f1 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
hendrikvincent 0:05ccbd4f84f1 25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
hendrikvincent 0:05ccbd4f84f1 26 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
hendrikvincent 0:05ccbd4f84f1 27 * OF SUCH DAMAGE.
hendrikvincent 0:05ccbd4f84f1 28 *
hendrikvincent 0:05ccbd4f84f1 29 * This file is part of the lwIP TCP/IP stack.
hendrikvincent 0:05ccbd4f84f1 30 *
hendrikvincent 0:05ccbd4f84f1 31 * Author: Adam Dunkels <adam@sics.se>
hendrikvincent 0:05ccbd4f84f1 32 *
hendrikvincent 0:05ccbd4f84f1 33 */
hendrikvincent 0:05ccbd4f84f1 34
hendrikvincent 0:05ccbd4f84f1 35 #ifndef __NETIF_ETHARP_H__
hendrikvincent 0:05ccbd4f84f1 36 #define __NETIF_ETHARP_H__
hendrikvincent 0:05ccbd4f84f1 37
hendrikvincent 0:05ccbd4f84f1 38 #include "lwip/opt.h"
hendrikvincent 0:05ccbd4f84f1 39
hendrikvincent 0:05ccbd4f84f1 40 #if LWIP_ARP || LWIP_ETHERNET /* don't build if not configured for use in lwipopts.h */
hendrikvincent 0:05ccbd4f84f1 41
hendrikvincent 0:05ccbd4f84f1 42 #include "lwip/pbuf.h"
hendrikvincent 0:05ccbd4f84f1 43 #include "lwip/ip_addr.h"
hendrikvincent 0:05ccbd4f84f1 44 #include "lwip/netif.h"
hendrikvincent 0:05ccbd4f84f1 45 #include "lwip/ip.h"
hendrikvincent 0:05ccbd4f84f1 46
hendrikvincent 0:05ccbd4f84f1 47 #ifdef __cplusplus
hendrikvincent 0:05ccbd4f84f1 48 extern "C" {
hendrikvincent 0:05ccbd4f84f1 49 #endif
hendrikvincent 0:05ccbd4f84f1 50
hendrikvincent 0:05ccbd4f84f1 51 #ifndef ETHARP_HWADDR_LEN
hendrikvincent 0:05ccbd4f84f1 52 #define ETHARP_HWADDR_LEN 6
hendrikvincent 0:05ccbd4f84f1 53 #endif
hendrikvincent 0:05ccbd4f84f1 54
hendrikvincent 0:05ccbd4f84f1 55 #ifdef PACK_STRUCT_USE_INCLUDES
hendrikvincent 0:05ccbd4f84f1 56 # include "arch/bpstruct.h"
hendrikvincent 0:05ccbd4f84f1 57 #endif
hendrikvincent 0:05ccbd4f84f1 58 PACK_STRUCT_BEGIN
hendrikvincent 0:05ccbd4f84f1 59 struct eth_addr {
hendrikvincent 0:05ccbd4f84f1 60 PACK_STRUCT_FIELD(u8_t addr[ETHARP_HWADDR_LEN]);
hendrikvincent 0:05ccbd4f84f1 61 } PACK_STRUCT_STRUCT;
hendrikvincent 0:05ccbd4f84f1 62 PACK_STRUCT_END
hendrikvincent 0:05ccbd4f84f1 63 #ifdef PACK_STRUCT_USE_INCLUDES
hendrikvincent 0:05ccbd4f84f1 64 # include "arch/epstruct.h"
hendrikvincent 0:05ccbd4f84f1 65 #endif
hendrikvincent 0:05ccbd4f84f1 66
hendrikvincent 0:05ccbd4f84f1 67 #ifdef PACK_STRUCT_USE_INCLUDES
hendrikvincent 0:05ccbd4f84f1 68 # include "arch/bpstruct.h"
hendrikvincent 0:05ccbd4f84f1 69 #endif
hendrikvincent 0:05ccbd4f84f1 70 PACK_STRUCT_BEGIN
hendrikvincent 0:05ccbd4f84f1 71 /* Ethernet header */
hendrikvincent 0:05ccbd4f84f1 72 struct eth_hdr {
hendrikvincent 0:05ccbd4f84f1 73 #if ETH_PAD_SIZE
hendrikvincent 0:05ccbd4f84f1 74 PACK_STRUCT_FIELD(u8_t padding[ETH_PAD_SIZE]);
hendrikvincent 0:05ccbd4f84f1 75 #endif
hendrikvincent 0:05ccbd4f84f1 76 PACK_STRUCT_FIELD(struct eth_addr dest);
hendrikvincent 0:05ccbd4f84f1 77 PACK_STRUCT_FIELD(struct eth_addr src);
hendrikvincent 0:05ccbd4f84f1 78 PACK_STRUCT_FIELD(u16_t type);
hendrikvincent 0:05ccbd4f84f1 79 } PACK_STRUCT_STRUCT;
hendrikvincent 0:05ccbd4f84f1 80 PACK_STRUCT_END
hendrikvincent 0:05ccbd4f84f1 81 #ifdef PACK_STRUCT_USE_INCLUDES
hendrikvincent 0:05ccbd4f84f1 82 # include "arch/epstruct.h"
hendrikvincent 0:05ccbd4f84f1 83 #endif
hendrikvincent 0:05ccbd4f84f1 84
hendrikvincent 0:05ccbd4f84f1 85 #define SIZEOF_ETH_HDR (14 + ETH_PAD_SIZE)
hendrikvincent 0:05ccbd4f84f1 86
hendrikvincent 0:05ccbd4f84f1 87 #if ETHARP_SUPPORT_VLAN
hendrikvincent 0:05ccbd4f84f1 88
hendrikvincent 0:05ccbd4f84f1 89 #ifdef PACK_STRUCT_USE_INCLUDES
hendrikvincent 0:05ccbd4f84f1 90 # include "arch/bpstruct.h"
hendrikvincent 0:05ccbd4f84f1 91 #endif
hendrikvincent 0:05ccbd4f84f1 92 PACK_STRUCT_BEGIN
hendrikvincent 0:05ccbd4f84f1 93 /* VLAN header inserted between ethernet header and payload
hendrikvincent 0:05ccbd4f84f1 94 * if 'type' in ethernet header is ETHTYPE_VLAN.
hendrikvincent 0:05ccbd4f84f1 95 * See IEEE802.Q */
hendrikvincent 0:05ccbd4f84f1 96 struct eth_vlan_hdr {
hendrikvincent 0:05ccbd4f84f1 97 PACK_STRUCT_FIELD(u16_t tpid);
hendrikvincent 0:05ccbd4f84f1 98 PACK_STRUCT_FIELD(u16_t prio_vid);
hendrikvincent 0:05ccbd4f84f1 99 } PACK_STRUCT_STRUCT;
hendrikvincent 0:05ccbd4f84f1 100 PACK_STRUCT_END
hendrikvincent 0:05ccbd4f84f1 101 #ifdef PACK_STRUCT_USE_INCLUDES
hendrikvincent 0:05ccbd4f84f1 102 # include "arch/epstruct.h"
hendrikvincent 0:05ccbd4f84f1 103 #endif
hendrikvincent 0:05ccbd4f84f1 104
hendrikvincent 0:05ccbd4f84f1 105 #define SIZEOF_VLAN_HDR 4
hendrikvincent 0:05ccbd4f84f1 106 #define VLAN_ID(vlan_hdr) (htons((vlan_hdr)->prio_vid) & 0xFFF)
hendrikvincent 0:05ccbd4f84f1 107
hendrikvincent 0:05ccbd4f84f1 108 #endif /* ETHARP_SUPPORT_VLAN */
hendrikvincent 0:05ccbd4f84f1 109
hendrikvincent 0:05ccbd4f84f1 110 #ifdef PACK_STRUCT_USE_INCLUDES
hendrikvincent 0:05ccbd4f84f1 111 # include "arch/bpstruct.h"
hendrikvincent 0:05ccbd4f84f1 112 #endif
hendrikvincent 0:05ccbd4f84f1 113 PACK_STRUCT_BEGIN
hendrikvincent 0:05ccbd4f84f1 114 /* the ARP message, see RFC 826 ("Packet format") */
hendrikvincent 0:05ccbd4f84f1 115 struct etharp_hdr {
hendrikvincent 0:05ccbd4f84f1 116 PACK_STRUCT_FIELD(u16_t hwtype);
hendrikvincent 0:05ccbd4f84f1 117 PACK_STRUCT_FIELD(u16_t proto);
hendrikvincent 0:05ccbd4f84f1 118 PACK_STRUCT_FIELD(u8_t hwlen);
hendrikvincent 0:05ccbd4f84f1 119 PACK_STRUCT_FIELD(u8_t protolen);
hendrikvincent 0:05ccbd4f84f1 120 PACK_STRUCT_FIELD(u16_t opcode);
hendrikvincent 0:05ccbd4f84f1 121 PACK_STRUCT_FIELD(struct eth_addr shwaddr);
hendrikvincent 0:05ccbd4f84f1 122 PACK_STRUCT_FIELD(struct ip_addr2 sipaddr);
hendrikvincent 0:05ccbd4f84f1 123 PACK_STRUCT_FIELD(struct eth_addr dhwaddr);
hendrikvincent 0:05ccbd4f84f1 124 PACK_STRUCT_FIELD(struct ip_addr2 dipaddr);
hendrikvincent 0:05ccbd4f84f1 125 } PACK_STRUCT_STRUCT;
hendrikvincent 0:05ccbd4f84f1 126 PACK_STRUCT_END
hendrikvincent 0:05ccbd4f84f1 127 #ifdef PACK_STRUCT_USE_INCLUDES
hendrikvincent 0:05ccbd4f84f1 128 # include "arch/epstruct.h"
hendrikvincent 0:05ccbd4f84f1 129 #endif
hendrikvincent 0:05ccbd4f84f1 130
hendrikvincent 0:05ccbd4f84f1 131 #define SIZEOF_ETHARP_HDR 28
hendrikvincent 0:05ccbd4f84f1 132 #define SIZEOF_ETHARP_PACKET (SIZEOF_ETH_HDR + SIZEOF_ETHARP_HDR)
hendrikvincent 0:05ccbd4f84f1 133
hendrikvincent 0:05ccbd4f84f1 134 /* 5 seconds period */
hendrikvincent 0:05ccbd4f84f1 135 #define ARP_TMR_INTERVAL 5000
hendrikvincent 0:05ccbd4f84f1 136
hendrikvincent 0:05ccbd4f84f1 137 #define ETHTYPE_ARP 0x0806
hendrikvincent 0:05ccbd4f84f1 138 #define ETHTYPE_IP 0x0800
hendrikvincent 0:05ccbd4f84f1 139 #define ETHTYPE_VLAN 0x8100
hendrikvincent 0:05ccbd4f84f1 140 #define ETHTYPE_PPPOEDISC 0x8863 /* PPP Over Ethernet Discovery Stage */
hendrikvincent 0:05ccbd4f84f1 141 #define ETHTYPE_PPPOE 0x8864 /* PPP Over Ethernet Session Stage */
hendrikvincent 0:05ccbd4f84f1 142
hendrikvincent 0:05ccbd4f84f1 143 /* MEMCPY-like macro to copy to/from struct eth_addr's that are local variables
hendrikvincent 0:05ccbd4f84f1 144 * or known to be 32-bit aligned within the protocol header. */
hendrikvincent 0:05ccbd4f84f1 145 #ifndef ETHADDR32_COPY
hendrikvincent 0:05ccbd4f84f1 146 #define ETHADDR32_COPY(src, dst) SMEMCPY(src, dst, ETHARP_HWADDR_LEN)
hendrikvincent 0:05ccbd4f84f1 147 #endif
hendrikvincent 0:05ccbd4f84f1 148
hendrikvincent 0:05ccbd4f84f1 149 /* MEMCPY-like macro to copy to/from struct eth_addr's that are no local
hendrikvincent 0:05ccbd4f84f1 150 * variables and known to be 16-bit aligned within the protocol header. */
hendrikvincent 0:05ccbd4f84f1 151 #ifndef ETHADDR16_COPY
hendrikvincent 0:05ccbd4f84f1 152 #define ETHADDR16_COPY(src, dst) SMEMCPY(src, dst, ETHARP_HWADDR_LEN)
hendrikvincent 0:05ccbd4f84f1 153 #endif
hendrikvincent 0:05ccbd4f84f1 154
hendrikvincent 0:05ccbd4f84f1 155 #if LWIP_ARP /* don't build if not configured for use in lwipopts.h */
hendrikvincent 0:05ccbd4f84f1 156
hendrikvincent 0:05ccbd4f84f1 157 /* ARP message types (opcodes) */
hendrikvincent 0:05ccbd4f84f1 158 #define ARP_REQUEST 1
hendrikvincent 0:05ccbd4f84f1 159 #define ARP_REPLY 2
hendrikvincent 0:05ccbd4f84f1 160
hendrikvincent 0:05ccbd4f84f1 161 /* Define this to 1 and define LWIP_ARP_FILTER_NETIF_FN(pbuf, netif, type)
hendrikvincent 0:05ccbd4f84f1 162 * to a filter function that returns the correct netif when using multiple
hendrikvincent 0:05ccbd4f84f1 163 * netifs on one hardware interface where the netif's low-level receive
hendrikvincent 0:05ccbd4f84f1 164 * routine cannot decide for the correct netif (e.g. when mapping multiple
hendrikvincent 0:05ccbd4f84f1 165 * IP addresses to one hardware interface).
hendrikvincent 0:05ccbd4f84f1 166 */
hendrikvincent 0:05ccbd4f84f1 167 #ifndef LWIP_ARP_FILTER_NETIF
hendrikvincent 0:05ccbd4f84f1 168 #define LWIP_ARP_FILTER_NETIF 0
hendrikvincent 0:05ccbd4f84f1 169 #endif
hendrikvincent 0:05ccbd4f84f1 170
hendrikvincent 0:05ccbd4f84f1 171 #if ARP_QUEUEING
hendrikvincent 0:05ccbd4f84f1 172 /* struct for queueing outgoing packets for unknown address
hendrikvincent 0:05ccbd4f84f1 173 * defined here to be accessed by memp.h
hendrikvincent 0:05ccbd4f84f1 174 */
hendrikvincent 0:05ccbd4f84f1 175 struct etharp_q_entry {
hendrikvincent 0:05ccbd4f84f1 176 struct etharp_q_entry *next;
hendrikvincent 0:05ccbd4f84f1 177 struct pbuf *p;
hendrikvincent 0:05ccbd4f84f1 178 };
hendrikvincent 0:05ccbd4f84f1 179 #endif /* ARP_QUEUEING */
hendrikvincent 0:05ccbd4f84f1 180
hendrikvincent 0:05ccbd4f84f1 181 #define etharp_init() /* Compatibility define, not init needed. */
hendrikvincent 0:05ccbd4f84f1 182 void etharp_tmr(void);
hendrikvincent 0:05ccbd4f84f1 183 s8_t etharp_find_addr(struct netif *netif, ip_addr_t *ipaddr,
hendrikvincent 0:05ccbd4f84f1 184 struct eth_addr **eth_ret, ip_addr_t **ip_ret);
hendrikvincent 0:05ccbd4f84f1 185 err_t etharp_output(struct netif *netif, struct pbuf *q, ip_addr_t *ipaddr);
hendrikvincent 0:05ccbd4f84f1 186 err_t etharp_query(struct netif *netif, ip_addr_t *ipaddr, struct pbuf *q);
hendrikvincent 0:05ccbd4f84f1 187 err_t etharp_request(struct netif *netif, ip_addr_t *ipaddr);
hendrikvincent 0:05ccbd4f84f1 188 /* For Ethernet network interfaces, we might want to send "gratuitous ARP";
hendrikvincent 0:05ccbd4f84f1 189 * this is an ARP packet sent by a node in order to spontaneously cause other
hendrikvincent 0:05ccbd4f84f1 190 * nodes to update an entry in their ARP cache.
hendrikvincent 0:05ccbd4f84f1 191 * From RFC 3220 "IP Mobility Support for IPv4" section 4.6. */
hendrikvincent 0:05ccbd4f84f1 192 #define etharp_gratuitous(netif) etharp_request((netif), &(netif)->ip_addr)
hendrikvincent 0:05ccbd4f84f1 193
hendrikvincent 0:05ccbd4f84f1 194 #if ETHARP_SUPPORT_STATIC_ENTRIES
hendrikvincent 0:05ccbd4f84f1 195 err_t etharp_add_static_entry(ip_addr_t *ipaddr, struct eth_addr *ethaddr);
hendrikvincent 0:05ccbd4f84f1 196 err_t etharp_remove_static_entry(ip_addr_t *ipaddr);
hendrikvincent 0:05ccbd4f84f1 197 #endif /* ETHARP_SUPPORT_STATIC_ENTRIES */
hendrikvincent 0:05ccbd4f84f1 198
hendrikvincent 0:05ccbd4f84f1 199 #if LWIP_AUTOIP
hendrikvincent 0:05ccbd4f84f1 200 err_t etharp_raw(struct netif *netif, const struct eth_addr *ethsrc_addr,
hendrikvincent 0:05ccbd4f84f1 201 const struct eth_addr *ethdst_addr,
hendrikvincent 0:05ccbd4f84f1 202 const struct eth_addr *hwsrc_addr, const ip_addr_t *ipsrc_addr,
hendrikvincent 0:05ccbd4f84f1 203 const struct eth_addr *hwdst_addr, const ip_addr_t *ipdst_addr,
hendrikvincent 0:05ccbd4f84f1 204 const u16_t opcode);
hendrikvincent 0:05ccbd4f84f1 205 #endif /* LWIP_AUTOIP */
hendrikvincent 0:05ccbd4f84f1 206
hendrikvincent 0:05ccbd4f84f1 207 #endif /* LWIP_ARP */
hendrikvincent 0:05ccbd4f84f1 208
hendrikvincent 0:05ccbd4f84f1 209 err_t ethernet_input(struct pbuf *p, struct netif *netif);
hendrikvincent 0:05ccbd4f84f1 210
hendrikvincent 0:05ccbd4f84f1 211 #define eth_addr_cmp(addr1, addr2) (memcmp((addr1)->addr, (addr2)->addr, ETHARP_HWADDR_LEN) == 0)
hendrikvincent 0:05ccbd4f84f1 212
hendrikvincent 0:05ccbd4f84f1 213 extern const struct eth_addr ethbroadcast, ethzero;
hendrikvincent 0:05ccbd4f84f1 214
hendrikvincent 0:05ccbd4f84f1 215 #ifdef __cplusplus
hendrikvincent 0:05ccbd4f84f1 216 }
hendrikvincent 0:05ccbd4f84f1 217 #endif
hendrikvincent 0:05ccbd4f84f1 218
hendrikvincent 0:05ccbd4f84f1 219 #endif /* LWIP_ARP || LWIP_ETHERNET */
hendrikvincent 0:05ccbd4f84f1 220
hendrikvincent 0:05ccbd4f84f1 221 #endif /* __NETIF_ARP_H__ */