net.h@ 17233

Last change on this file since 17233 was 14695, checked in by vboxsync, 16 years ago
IntNet: Quick hack to force broadcast flag in DHCP requests on shared MAC.
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File size: 18.9 KB

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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	*/
48	typedef RTUINT32U RTNETADDRIPV4;
49	AssertCompileSize(RTNETADDRIPV4, 4);
50	/** Pointer to a IPv4 address. */
51	typedef RTNETADDRIPV4 *PRTNETADDRIPV4;
52	/** Pointer to a const IPv4 address. */
53	typedef RTNETADDRIPV4 const *PCRTNETADDRIPV4;
54
55	/**
56	* IPv6 address.
57	*/
58	typedef RTUINT128U RTNETADDRIPV6;
59	AssertCompileSize(RTNETADDRIPV6, 16);
60	/** Pointer to a IPv4 address. */
61	typedef RTNETADDRIPV6 *PRTNETADDRIPV6;
62	/** Pointer to a const IPv4 address. */
63	typedef RTNETADDRIPV6 const *PCRTNETADDRIPV6;
64
65	/**
66	* IPX address.
67	*/
68	#pragma pack(1)
69	typedef 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()
77	AssertCompileSize(RTNETADDRIPX, 4+6);
78	/** Pointer to an IPX address. */
79	typedef RTNETADDRIPX *PRTNETADDRIPX;
80	/** Pointer to a const IPX address. */
81	typedef RTNETADDRIPX const *PCRTNETADDRIPX;
82
83	/**
84	* Address union.
85	*/
86	typedef 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;
105	AssertCompileSize(RTNETADDRU, 16);
106	/** Pointer to an address union. */
107	typedef RTNETADDRU *PRTNETADDRU;
108	/** Pointer to a const address union. */
109	typedef RTNETADDRU const *PCRTNETADDRU;
110
111
112	/**
113	* Ethernet header.
114	*/
115	#pragma pack(1)
116	typedef 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()
125	AssertCompileSize(RTNETETHERHDR, 14);
126	/** Pointer to an ethernet header. */
127	typedef RTNETETHERHDR *PRTNETETHERHDR;
128	/** Pointer to a const ethernet header. */
129	typedef 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)
148	typedef 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()
183	AssertCompileSize(RTNETIPV4, 6 * 4);
184	/** Pointer to a IPv4 header. */
185	typedef RTNETIPV4 *PRTNETIPV4;
186	/** Pointer to a const IPv4 header. */
187	typedef 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
213	RTDECL(uint16_t) RTNetIPv4HdrChecksum(PCRTNETIPV4 pIpHdr);
214	RTDECL(bool) RTNetIPv4IsHdrValid(PCRTNETIPV4 pIpHdr, size_t cbHdrMax, size_t cbPktMax);
215	RTDECL(uint32_t) RTNetIPv4PseudoChecksum(PCRTNETIPV4 pIpHdr);
216	RTDECL(uint32_t) RTNetIPv4PseudoChecksumBits(RTNETADDRIPV4 SrcAddr, RTNETADDRIPV4 DstAddr, uint8_t bProtocol, uint16_t cbPkt);
217	RTDECL(uint32_t) RTNetIPv4AddDataChecksum(void const pvData, size_t cbData, uint32_t u32Sum, bool pfOdd);
218	RTDECL(uint16_t) RTNetIPv4FinalizeChecksum(uint32_t u32Sum);
219
220
221	/**
222	* UDP header.
223	*/
224	#pragma pack(1)
225	typedef 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()
237	AssertCompileSize(RTNETUDP, 8);
238	/** Pointer to an UDP header. */
239	typedef RTNETUDP *PRTNETUDP;
240	/** Pointer to a const UDP header. */
241	typedef RTNETUDP const *PCRTNETUDP;
242
243	/** The minimum UDP packet length (in bytes). (RTNETUDP::uh_ulen) */
244	#define RTNETUDP_MIN_LEN (8)
245
246	RTDECL(uint32_t) RTNetIPv4AddUDPChecksum(PCRTNETUDP pUdpHdr, uint32_t u32Sum);
247	RTDECL(uint16_t) RTNetIPv4UDPChecksum(PCRTNETIPV4 pIpHdr, PCRTNETUDP pUdpHdr, void const *pvData);
248	RTDECL(bool) RTNetIPv4IsUDPSizeValid(PCRTNETIPV4 pIpHdr, PCRTNETUDP pUdpHdr, size_t cbPktMax);
249	RTDECL(bool) RTNetIPv4IsUDPValid(PCRTNETIPV4 pIpHdr, PCRTNETUDP pUdpHdr, void const *pvData, size_t cbPktMax);
250
251	/**
252	* IPv4 BOOTP / DHCP packet.
253	*/
254	#pragma pack(1)
255	typedef 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()
305	AssertCompileSize(RTNETBOOTP, 0xec + 128);
306	/** Pointer to a BOOTP / DHCP packet. */
307	typedef RTNETBOOTP *PRTNETBOOTP;
308	/** Pointer to a const BOOTP / DHCP packet. */
309	typedef 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	*/
333	typedef 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;
341	AssertCompileSize(RTNETDHCPOPT, 2);
342	/** Pointer to a DHCP option header. */
343	typedef RTNETDHCPOPT *PRTNETDHCPOPT;
344	/** Pointer to a const DHCP option header. */
345	typedef 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
369	/** @name DHCP Flags
370	* @{ */
371	#define RTNET_DHCP_FLAG_BROADCAST 0x8000
372	/** @} */
373
374	RTDECL(bool) RTNetIPv4IsDHCPValid(PCRTNETUDP pUdpHdr, PCRTNETBOOTP pDhcp, size_t cbDhcp, uint8_t *pMsgType);
375
376
377	/**
378	* IPv4 DHCP packet.
379	* @obsolete Use RTNETBOOTP.
380	*/
381	#pragma pack(1)
382	typedef struct RTNETDHCP
383	{
384	/** 00 - The packet opcode. */
385	uint8_t Op;
386	/** Hardware address type. */
387	uint8_t HType;
388	/** Hardware address length. */
389	uint8_t HLen;
390	uint8_t Hops;
391	uint32_t XID;
392	uint16_t Secs;
393	uint16_t Flags;
394	/** Client IPv4 address. */
395	RTNETADDRIPV4 CIAddr;
396	/** Your IPv4 address. */
397	RTNETADDRIPV4 YIAddr;
398	/** Server IPv4 address. */
399	RTNETADDRIPV4 SIAddr;
400	/** Gateway IPv4 address. */
401	RTNETADDRIPV4 GIAddr;
402	/** Client hardware address. */
403	uint8_t CHAddr[16];
404	/** Server name. */
405	uint8_t SName[64];
406	uint8_t File[128];
407	uint8_t abMagic[4];
408	uint8_t DhcpOpt;
409	uint8_t DhcpLen; /* 1 */
410	uint8_t DhcpReq;
411	uint8_t abOptions[57];
412	} RTNETDHCP;
413	#pragma pack()
414	/** @todo AssertCompileSize(RTNETDHCP, ); */
415	/** Pointer to a DHCP packet. */
416	typedef RTNETDHCP *PRTNETDHCP;
417	/** Pointer to a const DHCP packet. */
418	typedef RTNETDHCP const *PCRTNETDHCP;
419
420
421	/**
422	* TCP packet.
423	*/
424	#pragma pack(1)
425	typedef struct RTNETTCP
426	{
427	/** 00 - The source port. */
428	uint16_t th_sport;
429	/** 02 - The destination port. */
430	uint16_t th_dport;
431	/** 04 - The sequence number. */
432	uint32_t th_seq;
433	/** 08 - The acknowledgement number. */
434	uint32_t th_ack;
435	#ifdef RT_BIG_ENDIAN
436	unsigned int th_win : 16;
437	unsigned int th_flags : 8;
438	unsigned int th_off : 4;
439	unsigned int th_x2 : 4;
440	#else
441	/** 0c:0 - Reserved. */
442	unsigned int th_x2 : 4;
443	/** 0c:4 - The data offset given as a dword count from the start of this header. */
444	unsigned int th_off : 4;
445	/** 0d - flags. */
446	unsigned int th_flags : 8;
447	/** 0e - The window. */
448	unsigned int th_win : 16;
449	#endif
450	/** 10 - The checksum of the pseudo header, the TCP header and the data. */
451	uint16_t th_sum;
452	/** 12 - The urgent pointer. */
453	uint16_t th_urp;
454	/* (options follows here and then the data (aka text).) */
455	} RTNETTCP;
456	#pragma pack()
457	AssertCompileSize(RTNETTCP, 20);
458	/** Pointer to a TCP packet. */
459	typedef RTNETTCP *PRTNETTCP;
460	/** Pointer to a const TCP packet. */
461	typedef RTNETTCP const *PCRTNETTCP;
462
463	/** The minimum TCP header length (in bytes). (RTNETTCP::th_off * 4) */
464	#define RTNETTCP_MIN_LEN (20)
465
466	RTDECL(uint32_t) RTNetIPv4AddTCPChecksum(PCRTNETTCP pTcpHdr, uint32_t u32Sum);
467	RTDECL(uint16_t) RTNetIPv4TCPChecksum(PCRTNETIPV4 pIpHdr, PCRTNETTCP pTcpHdr, void const *pvData);
468	RTDECL(bool) RTNetIPv4IsTCPSizeValid(PCRTNETIPV4 pIpHdr, PCRTNETTCP pTcpHdr, size_t cbHdrMax, size_t cbPktMax);
469	RTDECL(bool) RTNetIPv4IsTCPValid(PCRTNETIPV4 pIpHdr, PCRTNETTCP pTcpHdr, size_t cbHdrMax, void const *pvData, size_t cbPktMax);
470
471
472	/**
473	* IPv4 ICMP packet header.
474	*/
475	#pragma pack(1)
476	typedef struct RTNETICMPV4HDR
477	{
478	/** 00 - The ICMP message type. */
479	uint8_t icmp_type;
480	/** 01 - Type specific code that further qualifies the message. */
481	uint8_t icmp_code;
482	/** 02 - Checksum of the ICMP message. */
483	uint16_t icmp_cksum;
484	} RTNETICMPV4HDR;
485	#pragma pack()
486	AssertCompileSize(RTNETICMPV4HDR, 4);
487	/** Pointer to an ICMP packet header. */
488	typedef RTNETICMPV4HDR *PRTNETICMPV4HDR;
489	/** Pointer to a const ICMP packet header. */
490	typedef RTNETICMPV4HDR const *PCRTNETICMPV4HDR;
491
492	/** @name ICMP (v4) message types.
493	* @{ */
494	#define RTNETICMPV4_TYPE_ECHO_REPLY 0
495	#define RTNETICMPV4_TYPE_ECHO_REQUEST 8
496	#define RTNETICMPV4_TYPE_TRACEROUTE 30
497	/** @} */
498
499	/**
500	* IPv4 ICMP ECHO Reply & Request packet.
501	*/
502	#pragma pack(1)
503	typedef struct RTNETICMPV4ECHO
504	{
505	/** 00 - The ICMP header. */
506	RTNETICMPV4HDR Hdr;
507	/** 04 - The identifier to help the requestor match up the reply.
508	* Can be 0. Typically fixed value. */
509	uint16_t icmp_id;
510	/** 06 - The sequence number to help the requestor match up the reply.
511	* Can be 0. Typically incrementing between requests. */
512	uint16_t icmp_seq;
513	/** 08 - Variable length data that is to be returned unmodified in the reply. */
514	uint8_t icmp_data[1];
515	} RTNETICMPV4ECHO;
516	#pragma pack()
517	AssertCompileSize(RTNETICMPV4ECHO, 9);
518	/** Pointer to an ICMP ECHO packet. */
519	typedef RTNETICMPV4ECHO *PRTNETICMPV4ECHO;
520	/** Pointer to a const ICMP ECHO packet. */
521	typedef RTNETICMPV4ECHO const *PCRTNETICMPV4ECHO;
522
523	/**
524	* IPv4 ICMP TRACEROUTE packet.
525	* This is an reply to an IP packet with the traceroute option set.
526	*/
527	#pragma pack(1)
528	typedef struct RTNETICMPV4TRACEROUTE
529	{
530	/** 00 - The ICMP header. */
531	RTNETICMPV4HDR Hdr;
532	/** 04 - Identifier copied from the traceroute option's ID number. */
533	uint16_t icmp_id;
534	/** 06 - Unused. (Possibly an icmp_seq?) */
535	uint16_t icmp_void;
536	/** 08 - Outbound hop count. From the IP packet causing this message. */
537	uint16_t icmp_ohc;
538	/** 0a - Return hop count. From the IP packet causing this message. */
539	uint16_t icmp_rhc;
540	/** 0c - Output link speed, 0 if not known. */
541	uint32_t icmp_speed;
542	/** 10 - Output link MTU, 0 if not known. */
543	uint32_t icmp_mtu;
544	} RTNETICMPV4TRACEROUTE;
545	#pragma pack()
546	AssertCompileSize(RTNETICMPV4TRACEROUTE, 20);
547	/** Pointer to an ICMP TRACEROUTE packet. */
548	typedef RTNETICMPV4TRACEROUTE *PRTNETICMPV4TRACEROUTE;
549	/** Pointer to a const ICMP TRACEROUTE packet. */
550	typedef RTNETICMPV4TRACEROUTE const *PCRTNETICMPV4TRACEROUTE;
551
552	/** @todo add more ICMPv4 as needed. */
553
554	/**
555	* IPv4 ICMP union packet.
556	*/
557	typedef union RTNETICMPV4
558	{
559	RTNETICMPV4HDR Hdr;
560	RTNETICMPV4ECHO Echo;
561	RTNETICMPV4TRACEROUTE Traceroute;
562	} RTNETICMPV4;
563	/** Pointer to an ICMP union packet. */
564	typedef RTNETICMPV4 *PRTNETICMPV4;
565	/** Pointer to a const ICMP union packet. */
566	typedef RTNETICMPV4 const *PCRTNETICMPV4;
567
568
569	/** @todo add ICMPv6 when needed. */
570
571
572	/**
573	* Ethernet ARP header.
574	*/
575	#pragma pack(1)
576	typedef struct RTNETARPHDR
577	{
578	/** The hardware type. */
579	uint16_t ar_htype;
580	/** The protocol type (ethertype). */
581	uint16_t ar_ptype;
582	/** The hardware address length. */
583	uint8_t ar_hlen;
584	/** The protocol address length. */
585	uint8_t ar_plen;
586	/** The operation. */
587	uint16_t ar_oper;
588	} RTNETARPHDR;
589	#pragma pack()
590	AssertCompileSize(RTNETARPHDR, 8);
591	/** Pointer to an ethernet ARP header. */
592	typedef RTNETARPHDR *PRTNETARPHDR;
593	/** Pointer to a const ethernet ARP header. */
594	typedef RTNETARPHDR const *PCRTNETARPHDR;
595
596	/** ARP hardware type - ethernet. */
597	#define RTNET_ARP_ETHER UINT16_C(1)
598
599	/** @name ARP operations
600	* @{ */
601	#define RTNET_ARPOP_REQUEST UINT16_C(1) /*< Request hardward address given a protocol address (ARP). /
602	#define RTNET_ARPOP_REPLY UINT16_C(2)
603	#define RTNET_ARPOP_REVREQUEST UINT16_C(3) /*< Request protocol address given a hardware address (RARP). /
604	#define RTNET_ARPOP_REVREPLY UINT16_C(4)
605	#define RTNET_ARPOP_INVREQUEST UINT16_C(8) /*< Inverse ARP. /
606	#define RTNET_ARPOP_INVREPLY UINT16_C(9)
607	/** Check if an ARP operation is a request or not. */
608	#define RTNET_ARPOP_IS_REQUEST(Op) ((Op) & 1)
609	/** Check if an ARP operation is a reply or not. */
610	#define RTNET_ARPOP_IS_REPLY(Op) (!RTNET_ARPOP_IS_REQUEST(Op))
611	/** @} */
612
613
614	/**
615	* Ethernet IPv4 + 6-byte MAC ARP request packet.
616	*/
617	#pragma pack(1)
618	typedef struct RTNETARPIPV4
619	{
620	/** ARP header. */
621	RTNETARPHDR Hdr;
622	/** The sender hardware address. */
623	RTMAC ar_sha;
624	/** The sender protocol address. */
625	RTNETADDRIPV4 ar_spa;
626	/** The target hardware address. */
627	RTMAC ar_tha;
628	/** The arget protocol address. */
629	RTNETADDRIPV4 ar_tpa;
630	} RTNETARPIPV4;
631	#pragma pack()
632	AssertCompileSize(RTNETARPIPV4, 8+6+4+6+4);
633	/** Pointer to an ethernet IPv4+MAC ARP request packet. */
634	typedef RTNETARPIPV4 *PRTNETARPIPV4;
635	/** Pointer to a const ethernet IPv4+MAC ARP request packet. */
636	typedef RTNETARPIPV4 const *PCRTNETARPIPV4;
637
638
639	/** @todo RTNETNDP (IPv6)*/
640
641
642	/** @} */
643
644	__END_DECLS
645
646	#endif
647

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source: vbox/trunk/include/iprt/net.h@ 17233

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