vnet/vnet/ethernet/arp_packet.h

   1 /*
   2  * ethernet/arp.c: IP v4 ARP node
   3  *
   4  * Copyright (c) 2010 Cisco and/or its affiliates.
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at:
   8  *
   9  *     http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  */
  17
  18 #ifndef included_ethernet_arp_packet_h
  19 #define included_ethernet_arp_packet_h
  20
  21 #define foreach_ethernet_arp_hardware_type      \
  22   _ (0, reserved)                               \
  23   _ (1, ethernet)                               \
  24   _ (2, experimental_ethernet)                  \
  25   _ (3, ax_25)                                  \
  26   _ (4, proteon_pronet_token_ring)              \
  27   _ (5, chaos)                                  \
  28   _ (6, ieee_802)                               \
  29   _ (7, arcnet)                                 \
  30   _ (8, hyperchannel)                           \
  31   _ (9, lanstar)                                \
  32   _ (10, autonet)                               \
  33   _ (11, localtalk)                             \
  34   _ (12, localnet)                              \
  35   _ (13, ultra_link)                            \
  36   _ (14, smds)                                  \
  37   _ (15, frame_relay)                           \
  38   _ (16, atm)                                   \
  39   _ (17, hdlc)                                  \
  40   _ (18, fibre_channel)                         \
  41   _ (19, atm19)                                 \
  42   _ (20, serial_line)                           \
  43   _ (21, atm21)                                 \
  44   _ (22, mil_std_188_220)                       \
  45   _ (23, metricom)                              \
  46   _ (24, ieee_1394)                             \
  47   _ (25, mapos)                                 \
  48   _ (26, twinaxial)                             \
  49   _ (27, eui_64)                                \
  50   _ (28, hiparp)                                \
  51   _ (29, iso_7816_3)                            \
  52   _ (30, arpsec)                                \
  53   _ (31, ipsec_tunnel)                          \
  54   _ (32, infiniband)                            \
  55   _ (33, cai)                                   \
  56   _ (34, wiegand)                               \
  57   _ (35, pure_ip)                               \
  58   _ (36, hw_exp1)                               \
  59   _ (256, hw_exp2)
  60
  61 #define foreach_ethernet_arp_opcode             \
  62   _ (reserved)                                  \
  63   _ (request)                                   \
  64   _ (reply)                                     \
  65   _ (reverse_request)                           \
  66   _ (reverse_reply)                             \
  67   _ (drarp_request)                             \
  68   _ (drarp_reply)                               \
  69   _ (drarp_error)                               \
  70   _ (inarp_request)                             \
  71   _ (inarp_reply)                               \
  72   _ (arp_nak)                                   \
  73   _ (mars_request)                              \
  74   _ (mars_multi)                                \
  75   _ (mars_mserv)                                \
  76   _ (mars_join)                                 \
  77   _ (mars_leave)                                \
  78   _ (mars_nak)                                  \
  79   _ (mars_unserv)                               \
  80   _ (mars_sjoin)                                \
  81   _ (mars_sleave)                               \
  82   _ (mars_grouplist_request)                    \
  83   _ (mars_grouplist_reply)                      \
  84   _ (mars_redirect_map)                         \
  85   _ (mapos_unarp)                               \
  86   _ (exp1)                                      \
  87   _ (exp2)
  88
  89 typedef enum {
  90 #define _(n,f) ETHERNET_ARP_HARDWARE_TYPE_##f = (n),
  91   foreach_ethernet_arp_hardware_type
  92 #undef _
  93 } ethernet_arp_hardware_type_t;
  94
  95 typedef enum {
  96 #define _(f) ETHERNET_ARP_OPCODE_##f,
  97   foreach_ethernet_arp_opcode
  98 #undef _
  99   ETHERNET_ARP_N_OPCODE,
 100 } ethernet_arp_opcode_t;
 101
 102 typedef enum {
 103   IP4_ARP_NEXT_DROP,
 104   IP4_ARP_N_NEXT,
 105 } ip4_arp_next_t;
 106
 107 typedef enum {
 108   IP4_ARP_ERROR_DROP,
 109   IP4_ARP_ERROR_REQUEST_SENT,
 110   IP4_ARP_ERROR_NON_ARP_ADJ,
 111   IP4_ARP_ERROR_REPLICATE_DROP,
 112   IP4_ARP_ERROR_REPLICATE_FAIL
 113 } ip4_arp_error_t;
 114
 115 typedef CLIB_PACKED (struct {
 116   u8 ethernet[6];
 117   ip4_address_t ip4;
 118 }) ethernet_arp_ip4_over_ethernet_address_t;
 119
 120 typedef struct {
 121   u16 l2_type;
 122   u16 l3_type;
 123   u8 n_l2_address_bytes;
 124   u8 n_l3_address_bytes;
 125   u16 opcode;
 126   union {
 127     ethernet_arp_ip4_over_ethernet_address_t ip4_over_ethernet[2];
 128
 129     /* Others... */
 130     u8 data[0];
 131   };
 132 } ethernet_arp_header_t;
 133
 134 #endif /* included_ethernet_arp_packet_h */