diff options
Diffstat (limited to 'libdnet-stripped/include/dnet/icmpv6.h')
| -rw-r--r-- | libdnet-stripped/include/dnet/icmpv6.h | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/libdnet-stripped/include/dnet/icmpv6.h b/libdnet-stripped/include/dnet/icmpv6.h new file mode 100644 index 0000000..9bea5a1 --- /dev/null +++ b/libdnet-stripped/include/dnet/icmpv6.h @@ -0,0 +1,117 @@ +/* + * icmpv6.h + * + * ICMPv6. + * RFC 4443 + * + * $Id: $ + */ + +#ifndef DNET_ICMPV6_H +#define DNET_ICMPV6_H + +#define ICMPV6_HDR_LEN 4 /* base ICMPv6 header length */ + +#ifndef __GNUC__ +#ifndef __attribute__ +# define __attribute__(x) +#endif +# pragma pack(1) +#endif + +/* + * ICMPv6 header + */ +struct icmpv6_hdr { + uint8_t icmpv6_type; /* type of message, see below */ + uint8_t icmpv6_code; /* type sub code */ + uint16_t icmpv6_cksum; /* ones complement cksum of struct */ +}; + +/* + * Types (icmpv6_type) and codes (icmpv6_code) - + * http://www.iana.org/assignments/icmpv6-parameters + */ +#define ICMPV6_CODE_NONE 0 /* for types without codes */ +#define ICMPV6_UNREACH 1 /* dest unreachable, codes: */ +#define ICMPV6_UNREACH_NOROUTE 0 /* no route to dest */ +#define ICMPV6_UNREACH_PROHIB 1 /* admin prohibited */ +#define ICMPV6_UNREACH_SCOPE 2 /* beyond scope of source address */ +#define ICMPV6_UNREACH_ADDR 3 /* address unreach */ +#define ICMPV6_UNREACH_PORT 4 /* port unreach */ +#define ICMPV6_UNREACH_FILTER_PROHIB 5 /* src failed ingress/egress policy */ +#define ICMPV6_UNREACH_REJECT_ROUTE 6 /* reject route */ +#define ICMPV6_TIMEXCEED 3 /* time exceeded, code: */ +#define ICMPV6_TIMEXCEED_INTRANS 0 /* hop limit exceeded in transit */ +#define ICMPV6_TIMEXCEED_REASS 1 /* fragmetn reassembly time exceeded */ +#define ICMPV6_PARAMPROBLEM 4 /* parameter problem, code: */ +#define ICMPV6_PARAMPROBLEM_FIELD 0 /* erroneous header field encountered */ +#define ICMPV6_PARAMPROBLEM_NEXTHEADER 1 /* unrecognized Next Header type encountered */ +#define ICMPV6_PARAMPROBLEM_OPTION 2 /* unrecognized IPv6 option encountered */ +#define ICMPV6_ECHO 128 /* echo request */ +#define ICMPV6_ECHOREPLY 129 /* echo reply */ +/* + * Neighbor discovery types (RFC 4861) + */ +#define ICMPV6_NEIGHBOR_SOLICITATION 135 +#define ICMPV6_NEIGHBOR_ADVERTISEMENT 136 + +#define ICMPV6_INFOTYPE(type) (((type) & 0x80) != 0) + +/* + * Echo message data + */ +struct icmpv6_msg_echo { + uint16_t icmpv6_id; + uint16_t icmpv6_seq; + uint8_t icmpv6_data __flexarr; /* optional data */ +}; + +/* Neighbor solicitation or advertisement (single hardcoded option). + RFC 4861, sections 4.3 and 4.4. */ +struct icmpv6_msg_nd { + uint32_t icmpv6_flags; + ip6_addr_t icmpv6_target; + uint8_t icmpv6_option_type; + uint8_t icmpv6_option_length; + eth_addr_t icmpv6_mac; +}; + +/* + * ICMPv6 message union + */ +union icmpv6_msg { + struct icmpv6_msg_echo echo; /* ICMPV6_ECHO{REPLY} */ + struct icmpv6_msg_nd nd; /* ICMPV6_NEIGHBOR_{SOLICITATION,ADVERTISEMENT} */ +}; + +#ifndef __GNUC__ +# pragma pack() +#endif + +#define icmpv6_pack_hdr(hdr, type, code) do { \ + struct icmpv6_hdr *icmpv6_pack_p = (struct icmpv6_hdr *)(hdr); \ + icmpv6_pack_p->icmpv6_type = type; icmpv6_pack_p->icmpv6_code = code; \ +} while (0) + +#define icmpv6_pack_hdr_echo(hdr, type, code, id, seq, data, len) do { \ + struct icmpv6_msg_echo *echo_pack_p = (struct icmpv6_msg_echo *)\ + ((uint8_t *)(hdr) + ICMPV6_HDR_LEN); \ + icmpv6_pack_hdr(hdr, type, code); \ + echo_pack_p->icmpv6_id = htons(id); \ + echo_pack_p->icmpv6_seq = htons(seq); \ + memmove(echo_pack_p->icmpv6_data, data, len); \ +} while (0) + +#define icmpv6_pack_hdr_ns_mac(hdr, targetip, srcmac) do { \ + struct icmpv6_msg_nd *nd_pack_p = (struct icmpv6_msg_nd *) \ + ((uint8_t *)(hdr) + ICMPV6_HDR_LEN); \ + icmpv6_pack_hdr(hdr, ICMPV6_NEIGHBOR_SOLICITATION, 0); \ + nd_pack_p->icmpv6_flags = 0; \ + memmove(&nd_pack_p->icmpv6_target, &(targetip), IP6_ADDR_LEN); \ + nd_pack_p->icmpv6_option_type = 1; \ + nd_pack_p->icmpv6_option_length = 1; \ + memmove(&nd_pack_p->icmpv6_mac, &(srcmac), ETH_ADDR_LEN); \ +} while (0) + +#endif /* DNET_ICMPV6_H */ |