qemu/roms/SLOF/clients/net-snk/app/netlib/icmpv6.h

   1 /******************************************************************************
   2  * Copyright (c) 2013 IBM Corporation
   3  * All rights reserved.
   4  * This program and the accompanying materials
   5  * are made available under the terms of the BSD License
   6  * which accompanies this distribution, and is available at
   7  * http://www.opensource.org/licenses/bsd-license.php
   8  *
   9  * Contributors:
  10  *     IBM Corporation - initial implementation
  11  *****************************************************************************/
  12
  13 #ifndef _ICMPV6_H_
  14 #define _ICMPV6_H_
  15
  16 #include <stdint.h>
  17 #include <netlib/ethernet.h>
  18 #include <netlib/ipv6.h>
  19
  20 #define __ICMPV6_DEBUG__
  21
  22 #ifdef __ICMPV6_DEBUG__
  23 #define ICMPV6_DEBUG_PRINT(format, ...) printf(format, ## __VA_ARGS__)
  24 #else
  25 #define ICMPV6_DEBUG_PRINT(format, ...)
  26 #endif
  27
  28 #define ICMPv6_HEADER_SIZE              4       /* Size of common fields */
  29 #define IPTYPE_ICMPV6                0x3a
  30
  31 /* Error message types */
  32 #define ICMPV6_DEST_UNREACHABLE         1       /* Destination unreachable */
  33 #define ICMPV6_PACKET_TOO_BIG           2       /* Packet too big */
  34 #define ICMPV6_TIME_EXCEEDED            3       /* Time exceeded */
  35 #define ICMPV6_PARAM_PROBLEM            4       /* Parameter problem */
  36
  37 /* Informational message types */
  38 #define ICMPV6_ECHO_REQUEST             128     /* Echo request */
  39 #define ICMPV6_ECHO_REPLY               129     /* Echo reply */
  40 #define ICMPV6_MCAST_LISTENER_QUERY     130     /* Multicast listener query */
  41 #define ICMPV6_MCAST_LISTENER_REPORT    131     /* Multicast listener report */
  42 #define ICMPv6 MCAST_LISTENER_DONE      132     /* Multicast listener done */
  43 #define ICMPV6_ROUTER_SOLICITATION      133     /* Router solicitation */
  44 #define ICMPV6_ROUTER_ADVERTISEMENT     134     /* Router advertisement */
  45 #define ICMPV6_NEIGHBOUR_SOLICITATION   135     /* Neighbor solicitation */
  46 #define ICMPV6_NEIGHBOUR_ADVERTISEMENT  136     /* Neighbor advertisement */
  47 #define ICMPV6_REDIRECT_MSG             137     /* Redirect message */
  48
  49 /******** Functions *******************/
  50 int8_t handle_icmpv6 (int fd, struct ethhdr *etherhdr, uint8_t  *ip6_packet);
  51 void   send_neighbour_solicitation(int fd, ip6_addr_t *target_ip6);
  52 void   send_router_solicitation(int fd);
  53 int    is_ra_received(void);
  54
  55 /* Prefix information */
  56 struct option_prefix {
  57         uint8_t  type;
  58         uint8_t  length;
  59         uint8_t  prefix_length;
  60         uint8_t  onlink:1,
  61                  autom:1,
  62                  not_router:1,
  63                  not_site_prefix:1,
  64                  reserved:4;
  65         uint32_t valid_lifetime;
  66         uint32_t preferred_lifetime;
  67         uint32_t reserved2;
  68         ip6_addr_t prefix;
  69 } __attribute((packed));
  70
  71 /* Neighbour advertisement/solicitation flags */
  72 struct na_flags {
  73     uint8_t is_router:1,        /* sender (we) is a router */
  74             na_is_solicited:1,  /* this NA was solicited (asked for) */
  75             override:1,         /* receiver shall override its cache entries */
  76             unused:5;
  77 }__attribute((packed));
  78
  79 /* Source/Target Link-layer address */
  80 struct option_ll_address{
  81         uint8_t  type;
  82         uint8_t  length;
  83         uint8_t  mac[ETH_ALEN];
  84 } __attribute((packed));
  85
  86 struct neighbour_solicitation {
  87         uint32_t router:1,
  88                  solicited:1,
  89                  override:1,
  90                  reserved:29;
  91         ip6_addr_t target;
  92         struct option_ll_address lladdr;
  93 } __attribute((packed));
  94
  95 struct neighbour_advertisement {
  96         uint32_t router:1,
  97                  solicited:1,
  98                  override:1,
  99                  reserved:29;
 100         ip6_addr_t target;
 101         struct option_ll_address lladdr;
 102 } __attribute((packed));
 103
 104 struct router_solicitation {
 105         uint32_t reserved;
 106         struct option_ll_address lladdr;
 107 } __attribute((packed));
 108
 109 struct router_advertisement {
 110         uint8_t curr_hop_limit;
 111         struct raflags {
 112                 uint8_t managed:1,
 113                         other:1,
 114                         reserved:6;
 115         } flags;
 116         uint16_t router_lifetime;
 117         uint32_t reachable_time;
 118         uint32_t retrans_timer;
 119         struct option_prefix prefix;
 120         struct option_ll_address ll_addr;
 121 } __attribute((packed));
 122
 123 struct icmp6hdr {
 124         uint8_t type;
 125         uint8_t code;
 126         uint16_t checksum;
 127         union {
 128                 struct neighbour_solicitation nghb_solicit;
 129                 struct neighbour_advertisement nghb_adv;
 130                 struct router_solicitation router_solicit;
 131                 struct router_advertisement ra;
 132         } icmp6body;
 133 } __attribute((packed));
 134
 135 #endif