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/*
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* router_types.h - ip router
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*
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* Basilisk II (C) 1997-2001 Christian Bauer
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*
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* Windows platform specific code copyright (C) Lauri Pesonen
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef _ROUTER_TYPES_H_
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#define _ROUTER_TYPES_H_
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#pragma pack(1)
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// --------------------------- MAC ---------------------------
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typedef struct {
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uint8 dest[6];
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uint8 src[6];
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uint16 type;
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} ATTRIBUTE_PACKED mac_t;
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enum {
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mac_type_llc_ipx_limit = 0x05DC, // <= mac_type_llc_ipx_limit -->> 802.3 MAC frame
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mac_type_ip4 = 0x0800,
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mac_type_arp = 0x0806,
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mac_type_rarp = 0x8035,
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mac_type_ip6 = 0x86DD,
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mac_type_loopback = 0x9000
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};
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// --------------------------- ARP ---------------------------
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typedef struct {
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mac_t mac;
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uint16 htype;
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uint16 ptype;
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uint8 halen;
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uint8 palen;
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uint16 opcode;
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uint8 srch[6]; // size for ethernet
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uint8 srcp[4]; // size for ip
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uint8 dsth[6]; // size for ethernet
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uint8 dstp[4]; // size for ip
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} ATTRIBUTE_PACKED arp_t;
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enum {
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arp_request = 1,
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arp_reply = 2
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};
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enum {
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arp_hwtype_enet = 1
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};
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// --------------------------- IP4 ---------------------------
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typedef struct {
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mac_t mac;
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uint8 header_len:4;
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uint8 version:4;
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uint8 tos;
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uint16 total_len;
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uint16 ident;
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uint16 flags_n_frag_offset; // foffset 0..11, flags 12..15
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uint8 ttl;
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uint8 proto;
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uint16 checksum;
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uint32 src;
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uint32 dest;
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// ip options, size = 4 * header_len - 20
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} ATTRIBUTE_PACKED ip_t;
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// Protocol STD numbers
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enum {
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ip_proto_icmp = IPPROTO_ICMP,
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ip_proto_tcp = IPPROTO_TCP,
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ip_proto_udp = IPPROTO_UDP
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};
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// --------------------------- ICMP ---------------------------
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typedef struct {
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ip_t ip;
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uint8 type;
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uint8 code;
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uint16 checksum;
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// data
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} ATTRIBUTE_PACKED icmp_t;
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enum {
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icmp_Echo_reply = 0,
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icmp_Destination_unreachable = 3,
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icmp_Source_quench = 4,
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icmp_Redirect = 5,
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icmp_Echo = 8,
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icmp_Router_advertisement = 9,
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icmp_Router_solicitation = 10,
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icmp_Time_exceeded = 11,
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icmp_Parameter_problem = 12,
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icmp_Time_Stamp_request = 13,
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icmp_Time_Stamp_reply = 14,
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icmp_Information_request_obsolete = 15,
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icmp_Information_reply_obsolete = 16,
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icmp_Address_mask_request = 17,
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icmp_Address_mask_reply = 18,
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icmp_Traceroute = 30,
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icmp_Datagram_conversion_error = 31,
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icmp_Mobile_host_redirect = 32,
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icmp_IPv6_Where_Are_You = 33,
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icmp_IPv6_I_Am_Here = 34,
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icmp_Mobile_registration_request = 35,
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icmp_Mobile_registration_reply = 36,
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icmp_Domain_name_request = 37,
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icmp_Domain_name_reply = 38,
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icmp_SKIP = 39,
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icmp_Photuris = 40
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};
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// --------------------------- TCP ---------------------------
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typedef struct {
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ip_t ip;
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uint16 src_port;
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uint16 dest_port;
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uint32 seq;
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uint32 ack;
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uint8 header_len; // note: some reserved bits
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uint8 flags; // note: some reserved bits
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uint16 window;
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uint16 checksum;
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uint16 urgent_ptr;
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// options + padding: size = dataoffset*4-20
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// data
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} ATTRIBUTE_PACKED tcp_t;
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enum {
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tcp_flags_URG = 0x20, // The urgent pointer field is significant in this segment.
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tcp_flags_ACK = 0x10, // The acknowledgment field is significant in this segment.
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tcp_flags_PSH = 0x08, // Push function.
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tcp_flags_RST = 0x04, // Resets the connection.
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tcp_flags_SYN = 0x02, // Synchronizes the sequence numbers.
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tcp_flags_FIN = 0x01 // No more data from sender.
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};
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enum {
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tcp_state_closed,
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tcp_state_listen,
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tcp_state_syn_sent,
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tcp_state_syn_rcvd,
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tcp_state_established,
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tcp_state_close_wait,
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tcp_state_last_ack,
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tcp_state_finwait_1,
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tcp_state_finwait_2,
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tcp_state_closing,
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tcp_state_time_wait
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};
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// --------------------------- UDP ---------------------------
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typedef struct {
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ip_t ip;
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uint16 src_port;
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uint16 dest_port;
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uint16 msg_len;
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uint16 checksum;
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// data
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} ATTRIBUTE_PACKED udp_t;
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typedef struct {
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uint16 src_lo, src_hi;
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uint16 dest_lo, dest_hi;
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uint16 proto;
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uint16 msg_len;
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} ATTRIBUTE_PACKED pseudo_ip_t;
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#pragma pack()
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#endif // _ROUTER_TYPES_H_
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