gc/netif/etharp.h

   1 /*
   2  * Copyright (c) 2001-2003 Swedish Institute of Computer Science.
   3  * Copyright (c) 2003-2004 Leon Woestenberg <leon.woestenberg@axon.tv>
   4  * Copyright (c) 2003-2004 Axon Digital Design B.V., The Netherlands.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without modification,
   8  * are permitted provided that the following conditions are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright notice,
  11  *    this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright notice,
  13  *    this list of conditions and the following disclaimer in the documentation
  14  *    and/or other materials provided with the distribution.
  15  * 3. The name of the author may not be used to endorse or promote products
  16  *    derived from this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
  19  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  20  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
  21  * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  22  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
  23  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  24  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  25  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  26  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
  27  * OF SUCH DAMAGE.
  28  *
  29  * This file is part of the lwIP TCP/IP stack.
  30  *
  31  * Author: Adam Dunkels <adam@sics.se>
  32  *
  33  */
  34
  35 #ifndef __NETIF_ETHARP_H__
  36 #define __NETIF_ETHARP_H__
  37
  38 #ifndef ETH_PAD_SIZE
  39 #define ETH_PAD_SIZE 0
  40 #endif
  41
  42 #include "lwip/pbuf.h"
  43 #include "lwip/ip_addr.h"
  44 #include "lwip/netif.h"
  45 #include "lwip/ip.h"
  46
  47 #ifdef PACK_STRUCT_USE_INCLUDES
  48 #  include "arch/bpstruct.h"
  49 #endif
  50 PACK_STRUCT_BEGIN
  51 struct eth_addr {
  52   PACK_STRUCT_FIELD(u8_t addr[6]);
  53 } PACK_STRUCT_STRUCT;
  54 PACK_STRUCT_END
  55 #ifdef PACK_STRUCT_USE_INCLUDES
  56 #  include "arch/epstruct.h"
  57 #endif
  58
  59 #ifdef PACK_STRUCT_USE_INCLUDES
  60 #  include "arch/bpstruct.h"
  61 #endif
  62 PACK_STRUCT_BEGIN
  63 struct eth_hdr {
  64 #if ETH_PAD_SIZE
  65   PACK_STRUCT_FIELD(u8_t padding[ETH_PAD_SIZE]);
  66 #endif
  67   PACK_STRUCT_FIELD(struct eth_addr dest);
  68   PACK_STRUCT_FIELD(struct eth_addr src);
  69   PACK_STRUCT_FIELD(u16_t type);
  70 } PACK_STRUCT_STRUCT;
  71 PACK_STRUCT_END
  72 #ifdef PACK_STRUCT_USE_INCLUDES
  73 #  include "arch/epstruct.h"
  74 #endif
  75
  76 #ifdef PACK_STRUCT_USE_INCLUDES
  77 #  include "arch/bpstruct.h"
  78 #endif
  79 PACK_STRUCT_BEGIN
  80 /** the ARP message */
  81 struct etharp_hdr {
  82   PACK_STRUCT_FIELD(struct eth_hdr ethhdr);
  83   PACK_STRUCT_FIELD(u16_t hwtype);
  84   PACK_STRUCT_FIELD(u16_t proto);
  85   PACK_STRUCT_FIELD(u16_t _hwlen_protolen);
  86   PACK_STRUCT_FIELD(u16_t opcode);
  87   PACK_STRUCT_FIELD(struct eth_addr shwaddr);
  88   PACK_STRUCT_FIELD(struct ip_addr2 sipaddr);
  89   PACK_STRUCT_FIELD(struct eth_addr dhwaddr);
  90   PACK_STRUCT_FIELD(struct ip_addr2 dipaddr);
  91 } PACK_STRUCT_STRUCT;
  92 PACK_STRUCT_END
  93 #ifdef PACK_STRUCT_USE_INCLUDES
  94 #  include "arch/epstruct.h"
  95 #endif
  96
  97 #ifdef PACK_STRUCT_USE_INCLUDES
  98 #  include "arch/bpstruct.h"
  99 #endif
 100 PACK_STRUCT_BEGIN
 101 struct ethip_hdr {
 102   PACK_STRUCT_FIELD(struct eth_hdr eth);
 103   PACK_STRUCT_FIELD(struct ip_hdr ip);
 104 } PACK_STRUCT_STRUCT;
 105 PACK_STRUCT_END
 106 #ifdef PACK_STRUCT_USE_INCLUDES
 107 #  include "arch/epstruct.h"
 108 #endif
 109
 110 /** 5 seconds period */
 111 #define ARP_TMR_INTERVAL 5000
 112
 113 #define ETHTYPE_ARP 0x0806
 114 #define ETHTYPE_IP  0x0800
 115
 116 void etharp_init(void);
 117 void etharp_tmr(void);
 118 void etharp_ip_input(struct netif *netif, struct pbuf *p);
 119 void etharp_arp_input(struct netif *netif, struct eth_addr *ethaddr,
 120          struct pbuf *p);
 121 err_t etharp_output(struct netif *netif, struct ip_addr *ipaddr,
 122          struct pbuf *q);
 123 err_t etharp_query(struct netif *netif, struct ip_addr *ipaddr, struct pbuf *q);
 124 err_t etharp_request(struct netif *netif, struct ip_addr *ipaddr);
 125
 126 #endif /* __NETIF_ARP_H__ */