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source: vbox/trunk/include/iprt/net.h@ 13835

Last change on this file since 13835 was 11546, checked in by vboxsync, 16 years ago

attempt to fix the Windows builds

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1/** @file
2 * IPRT - Network Protocols.
3 */
4
5/*
6 * Copyright (C) 2008 Sun Microsystems, Inc.
7 *
8 * This file is part of VirtualBox Open Source Edition (OSE), as
9 * available from http://www.virtualbox.org. This file is free software;
10 * you can redistribute it and/or modify it under the terms of the GNU
11 * General Public License (GPL) as published by the Free Software
12 * Foundation, in version 2 as it comes in the "COPYING" file of the
13 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
14 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
15 *
16 * The contents of this file may alternatively be used under the terms
17 * of the Common Development and Distribution License Version 1.0
18 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
19 * VirtualBox OSE distribution, in which case the provisions of the
20 * CDDL are applicable instead of those of the GPL.
21 *
22 * You may elect to license modified versions of this file under the
23 * terms and conditions of either the GPL or the CDDL or both.
24 *
25 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
26 * Clara, CA 95054 USA or visit http://www.sun.com if you need
27 * additional information or have any questions.
28 */
29
30#ifndef ___iprt_net_h
31#define ___iprt_net_h
32
33#include <iprt/cdefs.h>
34#include <iprt/types.h>
35#include <iprt/assert.h>
36
37
38__BEGIN_DECLS
39
40/** @defgroup grp_rt_net RTNet - Network Protocols
41 * @ingroup grp_rt
42 * @{
43 */
44
45/**
46 * IPv4 address.
47 */
48typedef RTUINT32U RTNETADDRIPV4;
49AssertCompileSize(RTNETADDRIPV4, 4);
50/** Pointer to a IPv4 address. */
51typedef RTNETADDRIPV4 *PRTNETADDRIPV4;
52/** Pointer to a const IPv4 address. */
53typedef RTNETADDRIPV4 const *PCRTNETADDRIPV4;
54
55/**
56 * IPv6 address.
57 */
58typedef RTUINT128U RTNETADDRIPV6;
59AssertCompileSize(RTNETADDRIPV6, 16);
60/** Pointer to a IPv4 address. */
61typedef RTNETADDRIPV6 *PRTNETADDRIPV6;
62/** Pointer to a const IPv4 address. */
63typedef RTNETADDRIPV6 const *PCRTNETADDRIPV6;
64
65/**
66 * IPX address.
67 */
68#pragma pack(1)
69typedef struct RTNETADDRIPX
70{
71 /** The network ID. */
72 uint32_t Network;
73 /** The node ID. (Defaults to the MAC address apparently.) */
74 RTMAC Node;
75} RTNETADDRIPX;
76#pragma pack()
77AssertCompileSize(RTNETADDRIPX, 4+6);
78/** Pointer to an IPX address. */
79typedef RTNETADDRIPX *PRTNETADDRIPX;
80/** Pointer to a const IPX address. */
81typedef RTNETADDRIPX const *PCRTNETADDRIPX;
82
83/**
84 * Address union.
85 */
86typedef union RTNETADDRU
87{
88 /** 64-bit view. */
89 uint64_t au64[2];
90 /** 32-bit view. */
91 uint32_t au32[4];
92 /** 16-bit view. */
93 uint16_t au16[8];
94 /** 8-bit view. */
95 uint8_t au8[16];
96 /** IPv4 view. */
97 RTNETADDRIPV4 IPv4;
98 /** IPv6 view. */
99 RTNETADDRIPV6 IPv6;
100 /** IPX view. */
101 RTNETADDRIPX Ipx;
102 /** MAC address view. */
103 RTMAC Mac;
104} RTNETADDRU;
105AssertCompileSize(RTNETADDRU, 16);
106/** Pointer to an address union. */
107typedef RTNETADDRU *PRTNETADDRU;
108/** Pointer to a const address union. */
109typedef RTNETADDRU const *PCRTNETADDRU;
110
111
112/**
113 * Ethernet header.
114 */
115#pragma pack(1)
116typedef struct RTNETETHERHDR
117{
118 RTMAC DstMac;
119 RTMAC SrcMac;
120 /** Ethernet frame type or frame size, depending on the kind of ethernet.
121 * This is big endian on the wire. */
122 uint16_t EtherType;
123} RTNETETHERHDR;
124#pragma pack()
125AssertCompileSize(RTNETETHERHDR, 14);
126/** Pointer to an ethernet header. */
127typedef RTNETETHERHDR *PRTNETETHERHDR;
128/** Pointer to a const ethernet header. */
129typedef RTNETETHERHDR const *PCRTNETETHERHDR;
130
131/** @name EtherType (RTNETETHERHDR::EtherType)
132 * @{ */
133#define RTNET_ETHERTYPE_IPV4 UINT16_C(0x0800)
134#define RTNET_ETHERTYPE_ARP UINT16_C(0x0806)
135#define RTNET_ETHERTYPE_IPV6 UINT16_C(0x86dd)
136#define RTNET_ETHERTYPE_VLAN UINT16_C(0x8100)
137#define RTNET_ETHERTYPE_IPX_1 UINT16_C(0x8037)
138#define RTNET_ETHERTYPE_IPX_2 UINT16_C(0x8137)
139#define RTNET_ETHERTYPE_IPX_3 UINT16_C(0x8138)
140/** @} */
141
142
143/**
144 * IPv4 header.
145 * All is bigendian on the wire.
146 */
147#pragma pack(1)
148typedef struct RTNETIPV4
149{
150#ifdef RT_BIG_ENDIAN
151 unsigned int ip_v : 4;
152 unsigned int ip_hl : 4;
153 unsigned int ip_tos : 8;
154 unsigned int ip_len : 16;
155#else
156 /** 00:0 - Header length given as a 32-bit word count. */
157 unsigned int ip_hl : 4;
158 /** 00:4 - Header version. */
159 unsigned int ip_v : 4;
160 /** 01 - Type of service. */
161 unsigned int ip_tos : 8;
162 /** 02 - Total length (header + data). */
163 unsigned int ip_len : 16;
164#endif
165 /** 04 - Packet idenficiation. */
166 uint16_t ip_id;
167 /** 06 - Offset if fragmented. */
168 uint16_t ip_off;
169 /** 08 - Time to live. */
170 uint8_t ip_ttl;
171 /** 09 - Protocol. */
172 uint8_t ip_p;
173 /** 0a - Header check sum. */
174 uint16_t ip_sum;
175 /** 0c - Source address. */
176 RTNETADDRIPV4 ip_src;
177 /** 10 - Destination address. */
178 RTNETADDRIPV4 ip_dst;
179 /** 14 - Options (optional). */
180 uint32_t ip_options[1];
181} RTNETIPV4;
182#pragma pack()
183AssertCompileSize(RTNETIPV4, 6 * 4);
184/** Pointer to a IPv4 header. */
185typedef RTNETIPV4 *PRTNETIPV4;
186/** Pointer to a const IPv4 header. */
187typedef RTNETIPV4 const *PCRTNETIPV4;
188
189/** The minimum IPv4 header length (in bytes).
190 * Up to and including RTNETIPV4::ip_dst. */
191#define RTNETIPV4_MIN_LEN (20)
192
193
194/** @name IPv4 Protocol Numbers
195 * @{ */
196/** IPv4: ICMP */
197#define RTNETIPV4_PROT_ICMP (1)
198/** IPv4: TCP */
199#define RTNETIPV4_PROT_TCP (6)
200/** IPv4: UDP */
201#define RTNETIPV4_PROT_UDP (17)
202/** @} */
203
204/** @name Common IPv4 Port Assignments
205 * @{
206 */
207/** Boostrap Protocol / DHCP) Server. */
208#define RTNETIPV4_PORT_BOOTPS (67)
209/** Boostrap Protocol / DHCP) Client. */
210#define RTNETIPV4_PORT_BOOTPC (68)
211/** @} */
212
213RTDECL(uint16_t) RTNetIPv4HdrChecksum(PCRTNETIPV4 pIpHdr);
214RTDECL(bool) RTNetIPv4IsHdrValid(PCRTNETIPV4 pIpHdr, size_t cbHdrMax, size_t cbPktMax);
215RTDECL(uint32_t) RTNetIPv4PseudoChecksum(PCRTNETIPV4 pIpHdr);
216RTDECL(uint32_t) RTNetIPv4PseudoChecksumBits(RTNETADDRIPV4 SrcAddr, RTNETADDRIPV4 DstAddr, uint8_t bProtocol, uint16_t cbPkt);
217RTDECL(uint32_t) RTNetIPv4AddDataChecksum(void const *pvData, size_t cbData, uint32_t u32Sum, bool *pfOdd);
218RTDECL(uint16_t) RTNetIPv4FinalizeChecksum(uint32_t u32Sum);
219
220
221/**
222 * UDP header.
223 */
224#pragma pack(1)
225typedef struct RTNETUDP
226{
227 /** The source port. */
228 uint16_t uh_sport;
229 /** The destination port. */
230 uint16_t uh_dport;
231 /** The length of the UDP header and associated data. */
232 uint16_t uh_ulen;
233 /** The checksum of the pseudo header, the UDP header and the data. */
234 uint16_t uh_sum;
235} RTNETUDP;
236#pragma pack()
237AssertCompileSize(RTNETUDP, 8);
238/** Pointer to an UDP header. */
239typedef RTNETUDP *PRTNETUDP;
240/** Pointer to a const UDP header. */
241typedef RTNETUDP const *PCRTNETUDP;
242
243/** The minimum UDP packet length (in bytes). (RTNETUDP::uh_ulen) */
244#define RTNETUDP_MIN_LEN (8)
245
246RTDECL(uint32_t) RTNetIPv4AddUDPChecksum(PCRTNETUDP pUdpHdr, uint32_t u32Sum);
247RTDECL(uint16_t) RTNetIPv4UDPChecksum(PCRTNETIPV4 pIpHdr, PCRTNETUDP pUdpHdr, void const *pvData);
248RTDECL(bool) RTNetIPv4IsUDPSizeValid(PCRTNETIPV4 pIpHdr, PCRTNETUDP pUdpHdr, size_t cbPktMax);
249RTDECL(bool) RTNetIPv4IsUDPValid(PCRTNETIPV4 pIpHdr, PCRTNETUDP pUdpHdr, void const *pvData, size_t cbPktMax);
250
251/**
252 * IPv4 BOOTP / DHCP packet.
253 */
254#pragma pack(1)
255typedef struct RTNETBOOTP
256{
257 /** 00 - The packet opcode. */
258 uint8_t bp_op;
259 /** 01 - Hardware address type. Same as RTNETARPHDR::ar_htype. */
260 uint8_t bp_htype;
261 /** 02 - Hardware address length. */
262 uint8_t bp_hlen;
263 /** 03 - Gateway hops. */
264 uint8_t bp_hops;
265 /** 04 - Transaction ID. */
266 uint32_t bp_xid;
267 /** 08 - Seconds since boot started. */
268 uint16_t bp_secs;
269 /** 0a - Unused (BOOTP) / Flags (DHCP). */
270 uint16_t bp_flags;
271 /** 0c - Client IPv4 address. */
272 RTNETADDRIPV4 bp_ciaddr;
273 /** 10 - Your IPv4 address. */
274 RTNETADDRIPV4 bp_yiaddr;
275 /** 14 - Server IPv4 address. */
276 RTNETADDRIPV4 bp_siaddr;
277 /** 18 - Gateway IPv4 address. */
278 RTNETADDRIPV4 bp_giaddr;
279 /** 1c - Client hardware address. */
280 union
281 {
282 uint8_t au8[16];
283 RTMAC Mac;
284 } bp_chaddr;
285 /** 2c - Server name. */
286 uint8_t bp_sname[64];
287 /** 6c - File name / more DHCP options. */
288 uint8_t bp_file[128];
289 /** ec - Vendor specific area (BOOTP) / Options (DHCP).
290 * @remark This is really 312 bytes in the DHCP version. */
291 union
292 {
293 uint8_t au8[128];
294 struct DHCP
295 {
296 /** ec - The DHCP cookie (RTNET_DHCP_COOKIE). */
297 uint32_t dhcp_cookie;
298 /** f0 - The DHCP options. */
299 uint8_t dhcp_opts[124];
300 } Dhcp;
301 } bp_vend;
302
303} RTNETBOOTP;
304#pragma pack()
305AssertCompileSize(RTNETBOOTP, 0xec + 128);
306/** Pointer to a BOOTP / DHCP packet. */
307typedef RTNETBOOTP *PRTNETBOOTP;
308/** Pointer to a const BOOTP / DHCP packet. */
309typedef RTNETBOOTP const *PCRTNETBOOTP;
310
311/** Minimum BOOTP packet length. For quick validation, no standard thing really. */
312#define RTNETBOOTP_MIN_LEN 0xec
313/** Minimum DHCP packet length. For quick validation, no standard thing really. */
314#define RTNETBOOTP_DHCP_MIN_LEN 0xf1
315
316/** @name BOOTP packet opcode values
317 * @{ */
318#define RTNETBOOTP_OP_REQUEST 1
319#define RTNETBOOTP_OP_REPLY 2
320/** @} */
321
322/** @name DHCP flags (RTNETBOOTP::bp_flags)
323 * @{ */
324#define RTNET_DHCP_FLAGS_NO_BROADCAST UINT16_C(0x8000) /** @todo check test!!! */
325/** @} */
326
327/** The DHCP cookie (network endian). */
328#define RTNET_DHCP_COOKIE UINT32_C(0x63825363)
329
330/**
331 * An IPv4 DHCP option header.
332 */
333typedef struct RTNETDHCPOPT
334{
335 /** 00 - The DHCP option. */
336 uint8_t dhcp_opt;
337 /** 01 - The data length (excluding this header). */
338 uint8_t dhcp_len;
339 /* 02 - The option data follows here, optional and of variable length. */
340} RTNETDHCPOPT;
341AssertCompileSize(RTNETDHCPOPT, 2);
342/** Pointer to a DHCP option header. */
343typedef RTNETDHCPOPT *PRTNETDHCPOPT;
344/** Pointer to a const DHCP option header. */
345typedef RTNETDHCPOPT const *PCRTNETDHCPOPT;
346
347/** @name DHCP options
348 * @{ */
349/** 1 byte padding, this has no dhcp_len field. */
350#define RTNET_DHCP_OPT_PAD 0
351/** Have a 8-bit message type value as data, see RTNET_DHCP_MT_*. */
352#define RTNET_DHCP_OPT_MSG_TYPE 53
353/** Marks the end of the DHCP options, this has no dhcp_len field. */
354#define RTNET_DHCP_OPT_END 255
355/** @} */
356
357/** @name DHCP Message Types (option 53)
358 * @{ */
359#define RTNET_DHCP_MT_DISCOVER 1
360#define RTNET_DHCP_MT_OFFER 2
361#define RTNET_DHCP_MT_REQUEST 3
362#define RTNET_DHCP_MT_DECLINE 4
363#define RTNET_DHCP_MT_ACK 5
364#define RTNET_DHCP_MT_NAC 6
365#define RTNET_DHCP_MT_RELEASE 7
366#define RTNET_DHCP_MT_INFORM 8
367/** @} */
368
369RTDECL(bool) RTNetIPv4IsDHCPValid(PCRTNETUDP pUdpHdr, PCRTNETBOOTP pDhcp, size_t cbDhcp, uint8_t *pMsgType);
370
371
372/**
373 * IPv4 DHCP packet.
374 * @obsolete Use RTNETBOOTP.
375 */
376#pragma pack(1)
377typedef struct RTNETDHCP
378{
379 /** 00 - The packet opcode. */
380 uint8_t Op;
381 /** Hardware address type. */
382 uint8_t HType;
383 /** Hardware address length. */
384 uint8_t HLen;
385 uint8_t Hops;
386 uint32_t XID;
387 uint16_t Secs;
388 uint16_t Flags;
389 /** Client IPv4 address. */
390 RTNETADDRIPV4 CIAddr;
391 /** Your IPv4 address. */
392 RTNETADDRIPV4 YIAddr;
393 /** Server IPv4 address. */
394 RTNETADDRIPV4 SIAddr;
395 /** Gateway IPv4 address. */
396 RTNETADDRIPV4 GIAddr;
397 /** Client hardware address. */
398 uint8_t CHAddr[16];
399 /** Server name. */
400 uint8_t SName[64];
401 uint8_t File[128];
402 uint8_t abMagic[4];
403 uint8_t DhcpOpt;
404 uint8_t DhcpLen; /* 1 */
405 uint8_t DhcpReq;
406 uint8_t abOptions[57];
407} RTNETDHCP;
408#pragma pack()
409/** @todo AssertCompileSize(RTNETDHCP, ); */
410/** Pointer to a DHCP packet. */
411typedef RTNETDHCP *PRTNETDHCP;
412/** Pointer to a const DHCP packet. */
413typedef RTNETDHCP const *PCRTNETDHCP;
414
415
416/**
417 * TCP packet.
418 */
419#pragma pack(1)
420typedef struct RTNETTCP
421{
422 /** 00 - The source port. */
423 uint16_t th_sport;
424 /** 02 - The destination port. */
425 uint16_t th_dport;
426 /** 04 - The sequence number. */
427 uint32_t th_seq;
428 /** 08 - The acknowledgement number. */
429 uint32_t th_ack;
430#ifdef RT_BIG_ENDIAN
431 unsigned int th_win : 16;
432 unsigned int th_flags : 8;
433 unsigned int th_off : 4;
434 unsigned int th_x2 : 4;
435#else
436 /** 0c:0 - Reserved. */
437 unsigned int th_x2 : 4;
438 /** 0c:4 - The data offset given as a dword count from the start of this header. */
439 unsigned int th_off : 4;
440 /** 0d - flags. */
441 unsigned int th_flags : 8;
442 /** 0e - The window. */
443 unsigned int th_win : 16;
444#endif
445 /** 10 - The checksum of the pseudo header, the TCP header and the data. */
446 uint16_t th_sum;
447 /** 12 - The urgent pointer. */
448 uint16_t th_urp;
449 /* (options follows here and then the data (aka text).) */
450} RTNETTCP;
451#pragma pack()
452AssertCompileSize(RTNETTCP, 20);
453/** Pointer to a TCP packet. */
454typedef RTNETTCP *PRTNETTCP;
455/** Pointer to a const TCP packet. */
456typedef RTNETTCP const *PCRTNETTCP;
457
458/** The minimum TCP header length (in bytes). (RTNETTCP::th_off * 4) */
459#define RTNETTCP_MIN_LEN (20)
460
461RTDECL(uint32_t) RTNetIPv4AddTCPChecksum(PCRTNETTCP pTcpHdr, uint32_t u32Sum);
462RTDECL(uint16_t) RTNetIPv4TCPChecksum(PCRTNETIPV4 pIpHdr, PCRTNETTCP pTcpHdr, void const *pvData);
463RTDECL(bool) RTNetIPv4IsTCPSizeValid(PCRTNETIPV4 pIpHdr, PCRTNETTCP pTcpHdr, size_t cbHdrMax, size_t cbPktMax);
464RTDECL(bool) RTNetIPv4IsTCPValid(PCRTNETIPV4 pIpHdr, PCRTNETTCP pTcpHdr, size_t cbHdrMax, void const *pvData, size_t cbPktMax);
465
466
467/**
468 * IPv4 ICMP packet header.
469 */
470#pragma pack(1)
471typedef struct RTNETICMPV4HDR
472{
473 /** 00 - The ICMP message type. */
474 uint8_t icmp_type;
475 /** 01 - Type specific code that further qualifies the message. */
476 uint8_t icmp_code;
477 /** 02 - Checksum of the ICMP message. */
478 uint16_t icmp_cksum;
479} RTNETICMPV4HDR;
480#pragma pack()
481AssertCompileSize(RTNETICMPV4HDR, 4);
482/** Pointer to an ICMP packet header. */
483typedef RTNETICMPV4HDR *PRTNETICMPV4HDR;
484/** Pointer to a const ICMP packet header. */
485typedef RTNETICMPV4HDR const *PCRTNETICMPV4HDR;
486
487/** @name ICMP (v4) message types.
488 * @{ */
489#define RTNETICMPV4_TYPE_ECHO_REPLY 0
490#define RTNETICMPV4_TYPE_ECHO_REQUEST 8
491#define RTNETICMPV4_TYPE_TRACEROUTE 30
492/** @} */
493
494/**
495 * IPv4 ICMP ECHO Reply & Request packet.
496 */
497#pragma pack(1)
498typedef struct RTNETICMPV4ECHO
499{
500 /** 00 - The ICMP header. */
501 RTNETICMPV4HDR Hdr;
502 /** 04 - The identifier to help the requestor match up the reply.
503 * Can be 0. Typically fixed value. */
504 uint16_t icmp_id;
505 /** 06 - The sequence number to help the requestor match up the reply.
506 * Can be 0. Typically incrementing between requests. */
507 uint16_t icmp_seq;
508 /** 08 - Variable length data that is to be returned unmodified in the reply. */
509 uint8_t icmp_data[1];
510} RTNETICMPV4ECHO;
511#pragma pack()
512AssertCompileSize(RTNETICMPV4ECHO, 9);
513/** Pointer to an ICMP ECHO packet. */
514typedef RTNETICMPV4ECHO *PRTNETICMPV4ECHO;
515/** Pointer to a const ICMP ECHO packet. */
516typedef RTNETICMPV4ECHO const *PCRTNETICMPV4ECHO;
517
518/**
519 * IPv4 ICMP TRACEROUTE packet.
520 * This is an reply to an IP packet with the traceroute option set.
521 */
522#pragma pack(1)
523typedef struct RTNETICMPV4TRACEROUTE
524{
525 /** 00 - The ICMP header. */
526 RTNETICMPV4HDR Hdr;
527 /** 04 - Identifier copied from the traceroute option's ID number. */
528 uint16_t icmp_id;
529 /** 06 - Unused. (Possibly an icmp_seq?) */
530 uint16_t icmp_void;
531 /** 08 - Outbound hop count. From the IP packet causing this message. */
532 uint16_t icmp_ohc;
533 /** 0a - Return hop count. From the IP packet causing this message. */
534 uint16_t icmp_rhc;
535 /** 0c - Output link speed, 0 if not known. */
536 uint32_t icmp_speed;
537 /** 10 - Output link MTU, 0 if not known. */
538 uint32_t icmp_mtu;
539} RTNETICMPV4TRACEROUTE;
540#pragma pack()
541AssertCompileSize(RTNETICMPV4TRACEROUTE, 20);
542/** Pointer to an ICMP TRACEROUTE packet. */
543typedef RTNETICMPV4TRACEROUTE *PRTNETICMPV4TRACEROUTE;
544/** Pointer to a const ICMP TRACEROUTE packet. */
545typedef RTNETICMPV4TRACEROUTE const *PCRTNETICMPV4TRACEROUTE;
546
547/** @todo add more ICMPv4 as needed. */
548
549/**
550 * IPv4 ICMP union packet.
551 */
552typedef union RTNETICMPV4
553{
554 RTNETICMPV4HDR Hdr;
555 RTNETICMPV4ECHO Echo;
556 RTNETICMPV4TRACEROUTE Traceroute;
557} RTNETICMPV4;
558/** Pointer to an ICMP union packet. */
559typedef RTNETICMPV4 *PRTNETICMPV4;
560/** Pointer to a const ICMP union packet. */
561typedef RTNETICMPV4 const *PCRTNETICMPV4;
562
563
564/** @todo add ICMPv6 when needed. */
565
566
567/**
568 * Ethernet ARP header.
569 */
570#pragma pack(1)
571typedef struct RTNETARPHDR
572{
573 /** The hardware type. */
574 uint16_t ar_htype;
575 /** The protocol type (ethertype). */
576 uint16_t ar_ptype;
577 /** The hardware address length. */
578 uint8_t ar_hlen;
579 /** The protocol address length. */
580 uint8_t ar_plen;
581 /** The operation. */
582 uint16_t ar_oper;
583} RTNETARPHDR;
584#pragma pack()
585AssertCompileSize(RTNETARPHDR, 8);
586/** Pointer to an ethernet ARP header. */
587typedef RTNETARPHDR *PRTNETARPHDR;
588/** Pointer to a const ethernet ARP header. */
589typedef RTNETARPHDR const *PCRTNETARPHDR;
590
591/** ARP hardware type - ethernet. */
592#define RTNET_ARP_ETHER UINT16_C(1)
593
594/** @name ARP operations
595 * @{ */
596#define RTNET_ARPOP_REQUEST UINT16_C(1) /**< Request hardward address given a protocol address (ARP). */
597#define RTNET_ARPOP_REPLY UINT16_C(2)
598#define RTNET_ARPOP_REVREQUEST UINT16_C(3) /**< Request protocol address given a hardware address (RARP). */
599#define RTNET_ARPOP_REVREPLY UINT16_C(4)
600#define RTNET_ARPOP_INVREQUEST UINT16_C(8) /**< Inverse ARP. */
601#define RTNET_ARPOP_INVREPLY UINT16_C(9)
602/** Check if an ARP operation is a request or not. */
603#define RTNET_ARPOP_IS_REQUEST(Op) ((Op) & 1)
604/** Check if an ARP operation is a reply or not. */
605#define RTNET_ARPOP_IS_REPLY(Op) (!RTNET_ARPOP_IS_REQUEST(Op))
606/** @} */
607
608
609/**
610 * Ethernet IPv4 + 6-byte MAC ARP request packet.
611 */
612#pragma pack(1)
613typedef struct RTNETARPIPV4
614{
615 /** ARP header. */
616 RTNETARPHDR Hdr;
617 /** The sender hardware address. */
618 RTMAC ar_sha;
619 /** The sender protocol address. */
620 RTNETADDRIPV4 ar_spa;
621 /** The target hardware address. */
622 RTMAC ar_tha;
623 /** The arget protocol address. */
624 RTNETADDRIPV4 ar_tpa;
625} RTNETARPIPV4;
626#pragma pack()
627AssertCompileSize(RTNETARPIPV4, 8+6+4+6+4);
628/** Pointer to an ethernet IPv4+MAC ARP request packet. */
629typedef RTNETARPIPV4 *PRTNETARPIPV4;
630/** Pointer to a const ethernet IPv4+MAC ARP request packet. */
631typedef RTNETARPIPV4 const *PCRTNETARPIPV4;
632
633
634/** @todo RTNETNDP (IPv6)*/
635
636
637/** @} */
638
639__END_DECLS
640
641#endif
642
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