net.h@ 11049

Last change on this file since 11049 was 11049, checked in by vboxsync, 17 years ago
IPRT/RTNetIPv4: Rewrote the RTNETDHCP header as RTNETBOOTP and associated structures and defines. Added RTNetIPv4IsDHCPValid for validating a DHCP packet and dig out the message type option
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 18.4 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(0)
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	/** @} */
137
138
139	/**
140	* IPv4 header.
141	* All is bigendian on the wire.
142	*/
143	#pragma pack(1)
144	typedef struct RTNETIPV4
145	{
146	#ifdef RT_BIG_ENDIAN
147	unsigned int ip_v : 4;
148	unsigned int ip_hl : 4;
149	unsigned int ip_tos : 8;
150	unsigned int ip_len : 16;
151	#else
152	/** 00:0 - Header length given as a 32-bit word count. */
153	unsigned int ip_hl : 4;
154	/** 00:4 - Header version. */
155	unsigned int ip_v : 4;
156	/** 01 - Type of service. */
157	unsigned int ip_tos : 8;
158	/** 02 - Total length (header + data). */
159	unsigned int ip_len : 16;
160	#endif
161	/** 04 - Packet idenficiation. */
162	uint16_t ip_id;
163	/** 06 - Offset if fragmented. */
164	uint16_t ip_off;
165	/** 08 - Time to live. */
166	uint8_t ip_ttl;
167	/** 09 - Protocol. */
168	uint8_t ip_p;
169	/** 0a - Header check sum. */
170	uint16_t ip_sum;
171	/** 0c - Source address. */
172	RTNETADDRIPV4 ip_src;
173	/** 10 - Destination address. */
174	RTNETADDRIPV4 ip_dst;
175	/** 14 - Options (optional). */
176	uint32_t ip_options[1];
177	} RTNETIPV4;
178	#pragma pack(0)
179	AssertCompileSize(RTNETIPV4, 6 * 4);
180	/** Pointer to a IPv4 header. */
181	typedef RTNETIPV4 *PRTNETIPV4;
182	/** Pointer to a const IPv4 header. */
183	typedef RTNETIPV4 const *PCRTNETIPV4;
184
185	/** The minimum IPv4 header length (in bytes).
186	* Up to and including RTNETIPV4::ip_dst. */
187	#define RTNETIPV4_MIN_LEN (20)
188
189
190	/** @name IPv4 Protocol Numbers
191	* @{ */
192	/** IPv4: ICMP */
193	#define RTNETIPV4_PROT_ICMP (0)
194	/** IPv4: TCP */
195	#define RTNETIPV4_PROT_TCP (6)
196	/** IPv4: UDP */
197	#define RTNETIPV4_PROT_UDP (17)
198	/** @} */
199
200	/** @name Common IPv4 Port Assignments
201	* @{
202	*/
203	/** Boostrap Protocol / DHCP) Server. */
204	#define RTNETIPV4_PORT_BOOTPS (67)
205	/** Boostrap Protocol / DHCP) Client. */
206	#define RTNETIPV4_PORT_BOOTPC (68)
207	/** @} */
208
209	RTDECL(uint16_t) RTNetIPv4HdrChecksum(PCRTNETIPV4 pIpHdr);
210	RTDECL(bool) RTNetIPv4IsHdrValid(PCRTNETIPV4 pIpHdr, size_t cbHdrMax, size_t cbPktMax);
211	RTDECL(uint32_t) RTNetIPv4PseudoChecksum(PCRTNETIPV4 pIpHdr);
212	RTDECL(uint32_t) RTNetIPv4PseudoChecksumBits(RTNETADDRIPV4 SrcAddr, RTNETADDRIPV4 DstAddr, uint8_t bProtocol, uint16_t cbPkt);
213	RTDECL(uint32_t) RTNetIPv4AddDataChecksum(void const pvData, size_t cbData, uint32_t u32Sum, bool pfOdd);
214	RTDECL(uint16_t) RTNetIPv4FinalizeChecksum(uint32_t u32Sum);
215
216
217	/**
218	* UDP header.
219	*/
220	#pragma pack(1)
221	typedef struct RTNETUDP
222	{
223	/** The source port. */
224	uint16_t uh_sport;
225	/** The destination port. */
226	uint16_t uh_dport;
227	/** The length of the UDP header and associated data. */
228	uint16_t uh_ulen;
229	/** The checksum of the pseudo header, the UDP header and the data. */
230	uint16_t uh_sum;
231	} RTNETUDP;
232	#pragma pack(0)
233	AssertCompileSize(RTNETUDP, 8);
234	/** Pointer to an UDP header. */
235	typedef RTNETUDP *PRTNETUDP;
236	/** Pointer to a const UDP header. */
237	typedef RTNETUDP const *PCRTNETUDP;
238
239	/** The minimum UDP packet length (in bytes). (RTNETUDP::uh_ulen) */
240	#define RTNETUDP_MIN_LEN (8)
241
242	RTDECL(uint32_t) RTNetIPv4AddUDPChecksum(PCRTNETUDP pUdpHdr, uint32_t u32Sum);
243	RTDECL(uint16_t) RTNetIPv4UDPChecksum(PCRTNETIPV4 pIpHdr, PCRTNETUDP pUdpHdr, void const *pvData);
244	RTDECL(bool) RTNetIPv4IsUDPSizeValid(PCRTNETIPV4 pIpHdr, PCRTNETUDP pUdpHdr, size_t cbPktMax);
245	RTDECL(bool) RTNetIPv4IsUDPValid(PCRTNETIPV4 pIpHdr, PCRTNETUDP pUdpHdr, void const *pvData, size_t cbPktMax);
246
247	/**
248	* IPv4 BOOTP / DHCP packet.
249	*/
250	#pragma pack(1)
251	typedef struct RTNETBOOTP
252	{
253	/** 00 - The packet opcode. */
254	uint8_t bp_op;
255	/** 01 - Hardware address type. Same as RTNETARPHDR::ar_htype. */
256	uint8_t bp_htype;
257	/** 02 - Hardware address length. */
258	uint8_t bp_hlen;
259	/** 03 - Gateway hops. */
260	uint8_t bp_hops;
261	/** 04 - Transaction ID. */
262	uint32_t bp_xid;
263	/** 08 - Seconds since boot started. */
264	uint16_t bp_secs;
265	/** 0a - Unused (BOOTP) / Flags (DHCP). */
266	uint16_t bp_flags;
267	/** 0c - Client IPv4 address. */
268	RTNETADDRIPV4 bp_ciaddr;
269	/** 10 - Your IPv4 address. */
270	RTNETADDRIPV4 bp_yiaddr;
271	/** 14 - Server IPv4 address. */
272	RTNETADDRIPV4 bp_siaddr;
273	/** 18 - Gateway IPv4 address. */
274	RTNETADDRIPV4 bp_giaddr;
275	/** 1c - Client hardware address. */
276	union
277	{
278	uint8_t au8[16];
279	RTMAC Mac;
280	} bp_chaddr;
281	/** 2c - Server name. */
282	uint8_t bp_sname[64];
283	/** 6c - File name / more DHCP options. */
284	uint8_t bp_file[128];
285	/** ec - Vendor specific area (BOOTP) / Options (DHCP).
286	* @remark This is really 312 bytes in the DHCP version. */
287	union
288	{
289	uint8_t au8[128];
290	struct DHCP
291	{
292	/** ec - The DHCP cookie (RTNET_DHCP_COOKIE). */
293	uint32_t dhcp_cookie;
294	/** f0 - The DHCP options. */
295	uint8_t dhcp_opts[124];
296	} Dhcp;
297	} bp_vend;
298
299	} RTNETBOOTP;
300	#pragma pack(0)
301	AssertCompileSize(RTNETBOOTP, 0xec + 128);
302	/** Pointer to a BOOTP / DHCP packet. */
303	typedef RTNETBOOTP *PRTNETBOOTP;
304	/** Pointer to a const BOOTP / DHCP packet. */
305	typedef RTNETBOOTP const *PCRTNETBOOTP;
306
307	/** @name BOOTP packet opcode values
308	* @{ */
309	#define RTNETBOOTP_OP_REQUEST 1
310	#define RTNETBOOTP_OP_REPLY 2
311	/** @} */
312
313	/** @name DHCP flags (RTNETBOOTP::bp_flags)
314	* @{ */
315	#define RTNET_DHCP_FLAGS_NO_BROADCAST UINT16_C(0x8000) /** @todo check test!!! */
316	/** @} */
317
318	/** The DHCP cookie (network endian). */
319	#define RTNET_DHCP_COOKIE UINT32_C(0x63825363)
320
321	/**
322	* An IPv4 DHCP option header.
323	*/
324	typedef struct RTNETDHCPOPT
325	{
326	/** 00 - The DHCP option. */
327	uint8_t dhcp_opt;
328	/** 01 - The data length (excluding this header). */
329	uint8_t dhcp_len;
330	/* 02 - The option data follows here, optional and of variable length. */
331	} RTNETDHCPOPT;
332	AssertCompileSize(RTNETDHCPOPT, 2);
333	/** Pointer to a DHCP option header. */
334	typedef RTNETDHCPOPT *PRTNETDHCPOPT;
335	/** Pointer to a const DHCP option header. */
336	typedef RTNETDHCPOPT const *PCRTNETDHCPOPT;
337
338	/** @name DHCP options
339	* @{ */
340	/** 1 byte padding, this has no dhcp_len field. */
341	#define RTNET_DHCP_OPT_PAD 0
342	/** Have a 8-bit message type value as data, see RTNET_DHCP_MT_. /
343	#define RTNET_DHCP_OPT_MSG_TYPE 53
344	/** Marks the end of the DHCP options, this has no dhcp_len field. */
345	#define RTNET_DHCP_OPT_END 255
346	/** @} */
347
348	/** @name DHCP Message Types (option 53)
349	* @{ */
350	#define RTNET_DHCP_MT_DISCOVER 1
351	#define RTNET_DHCP_MT_OFFER 2
352	#define RTNET_DHCP_MT_REQUEST 3
353	#define RTNET_DHCP_MT_DECLINE 4
354	#define RTNET_DHCP_MT_ACK 5
355	#define RTNET_DHCP_MT_NAC 6
356	#define RTNET_DHCP_MT_RELEASE 7
357	#define RTNET_DHCP_MT_INFORM 8
358	/** @} */
359
360	RTDECL(bool) RTNetIPv4IsDHCPValid(PCRTNETUDP pUdpHdr, PCRTNETBOOTP pDhcp, size_t cbDhcp, uint8_t *pMsgType);
361
362
363	/**
364	* IPv4 DHCP packet.
365	* @obsolete Use RTNETBOOTP.
366	*/
367	#pragma pack(1)
368	typedef struct RTNETDHCP
369	{
370	/** 00 - The packet opcode. */
371	uint8_t Op;
372	/** Hardware address type. */
373	uint8_t HType;
374	/** Hardware address length. */
375	uint8_t HLen;
376	uint8_t Hops;
377	uint32_t XID;
378	uint16_t Secs;
379	uint16_t Flags;
380	/** Client IPv4 address. */
381	RTNETADDRIPV4 CIAddr;
382	/** Your IPv4 address. */
383	RTNETADDRIPV4 YIAddr;
384	/** Server IPv4 address. */
385	RTNETADDRIPV4 SIAddr;
386	/** Gateway IPv4 address. */
387	RTNETADDRIPV4 GIAddr;
388	/** Client hardware address. */
389	uint8_t CHAddr[16];
390	/** Server name. */
391	uint8_t SName[64];
392	uint8_t File[128];
393	uint8_t abMagic[4];
394	uint8_t DhcpOpt;
395	uint8_t DhcpLen; /* 1 */
396	uint8_t DhcpReq;
397	uint8_t abOptions[57];
398	} RTNETDHCP;
399	#pragma pack(0)
400	/** @todo AssertCompileSize(RTNETDHCP, ); */
401	/** Pointer to a DHCP packet. */
402	typedef RTNETDHCP *PRTNETDHCP;
403	/** Pointer to a const DHCP packet. */
404	typedef RTNETDHCP const *PCRTNETDHCP;
405
406
407	/**
408	* TCP packet.
409	*/
410	#pragma pack(1)
411	typedef struct RTNETTCP
412	{
413	/** 00 - The source port. */
414	uint16_t th_sport;
415	/** 02 - The destination port. */
416	uint16_t th_dport;
417	/** 04 - The sequence number. */
418	uint32_t th_seq;
419	/** 08 - The acknowledgement number. */
420	uint32_t th_ack;
421	#ifdef RT_BIG_ENDIAN
422	unsigned int th_win : 16;
423	unsigned int th_flags : 8;
424	unsigned int th_off : 4;
425	unsigned int th_x2 : 4;
426	#else
427	/** 0c:0 - Reserved. */
428	unsigned int th_x2 : 4;
429	/** 0c:4 - The data offset given as a dword count from the start of this header. */
430	unsigned int th_off : 4;
431	/** 0d - flags. */
432	unsigned int th_flags : 8;
433	/** 0e - The window. */
434	unsigned int th_win : 16;
435	#endif
436	/** 10 - The checksum of the pseudo header, the TCP header and the data. */
437	uint16_t th_sum;
438	/** 12 - The urgent pointer. */
439	uint16_t th_urp;
440	/* (options follows here and then the data (aka text).) */
441	} RTNETTCP;
442	#pragma pack(0)
443	AssertCompileSize(RTNETTCP, 20);
444	/** Pointer to a TCP packet. */
445	typedef RTNETTCP *PRTNETTCP;
446	/** Pointer to a const TCP packet. */
447	typedef RTNETTCP const *PCRTNETTCP;
448
449	/** The minimum TCP header length (in bytes). (RTNETTCP::th_off * 4) */
450	#define RTNETTCP_MIN_LEN (20)
451
452	RTDECL(uint32_t) RTNetIPv4AddTCPChecksum(PCRTNETTCP pTcpHdr, uint32_t u32Sum);
453	RTDECL(uint16_t) RTNetIPv4TCPChecksum(PCRTNETIPV4 pIpHdr, PCRTNETTCP pTcpHdr, void const *pvData);
454	RTDECL(bool) RTNetIPv4IsTCPSizeValid(PCRTNETIPV4 pIpHdr, PCRTNETTCP pTcpHdr, size_t cbHdrMax, size_t cbPktMax);
455	RTDECL(bool) RTNetIPv4IsTCPValid(PCRTNETIPV4 pIpHdr, PCRTNETTCP pTcpHdr, size_t cbHdrMax, void const *pvData, size_t cbPktMax);
456
457
458	/**
459	* IPv4 ICMP packet header.
460	*/
461	#pragma pack(1)
462	typedef struct RTNETICMPV4HDR
463	{
464	/** 00 - The ICMP message type. */
465	uint8_t icmp_type;
466	/** 01 - Type specific code that further qualifies the message. */
467	uint8_t icmp_code;
468	/** 02 - Checksum of the ICMP message. */
469	uint16_t icmp_cksum;
470	} RTNETICMPV4HDR;
471	#pragma pack(0)
472	AssertCompileSize(RTNETICMPV4HDR, 4);
473	/** Pointer to an ICMP packet header. */
474	typedef RTNETICMPV4HDR *PRTNETICMPV4HDR;
475	/** Pointer to a const ICMP packet header. */
476	typedef RTNETICMPV4HDR const *PCRTNETICMPV4HDR;
477
478	/** @name ICMP (v4) message types.
479	* @{ */
480	#define RTNETICMPV4_TYPE_ECHO_REPLY 0
481	#define RTNETICMPV4_TYPE_ECHO_REQUEST 8
482	#define RTNETICMPV4_TYPE_TRACEROUTE 30
483	/** @} */
484
485	/**
486	* IPv4 ICMP ECHO Reply & Request packet.
487	*/
488	#pragma pack(1)
489	typedef struct RTNETICMPV4ECHO
490	{
491	/** 00 - The ICMP header. */
492	RTNETICMPV4HDR Hdr;
493	/** 04 - The identifier to help the requestor match up the reply.
494	* Can be 0. Typically fixed value. */
495	uint16_t icmp_id;
496	/** 06 - The sequence number to help the requestor match up the reply.
497	* Can be 0. Typically incrementing between requests. */
498	uint16_t icmp_seq;
499	/** 08 - Variable length data that is to be returned unmodified in the reply. */
500	uint8_t icmp_data[1];
501	} RTNETICMPV4ECHO;
502	#pragma pack(0)
503	AssertCompileSize(RTNETICMPV4ECHO, 9);
504	/** Pointer to an ICMP ECHO packet. */
505	typedef RTNETICMPV4ECHO *PRTNETICMPV4ECHO;
506	/** Pointer to a const ICMP ECHO packet. */
507	typedef RTNETICMPV4ECHO const *PCRTNETICMPV4ECHO;
508
509	/**
510	* IPv4 ICMP TRACEROUTE packet.
511	* This is an reply to an IP packet with the traceroute option set.
512	*/
513	#pragma pack(1)
514	typedef struct RTNETICMPV4TRACEROUTE
515	{
516	/** 00 - The ICMP header. */
517	RTNETICMPV4HDR Hdr;
518	/** 04 - Identifier copied from the traceroute option's ID number. */
519	uint16_t icmp_id;
520	/** 06 - Unused. (Possibly an icmp_seq?) */
521	uint16_t icmp_void;
522	/** 08 - Outbound hop count. From the IP packet causing this message. */
523	uint16_t icmp_ohc;
524	/** 0a - Return hop count. From the IP packet causing this message. */
525	uint16_t icmp_rhc;
526	/** 0c - Output link speed, 0 if not known. */
527	uint32_t icmp_speed;
528	/** 10 - Output link MTU, 0 if not known. */
529	uint32_t icmp_mtu;
530	} RTNETICMPV4TRACEROUTE;
531	#pragma pack(0)
532	AssertCompileSize(RTNETICMPV4TRACEROUTE, 20);
533	/** Pointer to an ICMP TRACEROUTE packet. */
534	typedef RTNETICMPV4TRACEROUTE *PRTNETICMPV4TRACEROUTE;
535	/** Pointer to a const ICMP TRACEROUTE packet. */
536	typedef RTNETICMPV4TRACEROUTE const *PCRTNETICMPV4TRACEROUTE;
537
538	/** @todo add more ICMPv4 as needed. */
539
540	/**
541	* IPv4 ICMP union packet.
542	*/
543	typedef union RTNETICMPV4
544	{
545	RTNETICMPV4HDR Hdr;
546	RTNETICMPV4ECHO Echo;
547	RTNETICMPV4TRACEROUTE Traceroute;
548	} RTNETICMPV4;
549	/** Pointer to an ICMP union packet. */
550	typedef RTNETICMPV4 *PRTNETICMPV4;
551	/** Pointer to a const ICMP union packet. */
552	typedef RTNETICMPV4 const *PCRTNETICMPV4;
553
554
555	/** @todo add ICMPv6 when needed. */
556
557
558	/**
559	* Ethernet ARP header.
560	*/
561	#pragma pack(1)
562	typedef struct RTNETARPHDR
563	{
564	/** The hardware type. */
565	uint16_t ar_htype;
566	/** The protocol type (ethertype). */
567	uint16_t ar_ptype;
568	/** The hardware address length. */
569	uint8_t ar_hlen;
570	/** The protocol address length. */
571	uint8_t ar_plen;
572	/** The operation. */
573	uint16_t ar_oper;
574	} RTNETARPHDR;
575	#pragma pack(0)
576	AssertCompileSize(RTNETARPHDR, 8);
577	/** Pointer to an ethernet ARP header. */
578	typedef RTNETARPHDR *PRTNETARPHDR;
579	/** Pointer to a const ethernet ARP header. */
580	typedef RTNETARPHDR const *PCRTNETARPHDR;
581
582	/** ARP hardware type - ethernet. */
583	#define RTNET_ARP_ETHER UINT16_C(1)
584
585	/** @name ARP operations
586	* @{ */
587	#define RTNET_ARPOP_REQUEST UINT16_C(1) /*< Request hardward address given a protocol address (ARP). /
588	#define RTNET_ARPOP_REPLY UINT16_C(2)
589	#define RTNET_ARPOP_REVREQUEST UINT16_C(3) /*< Request protocol address given a hardware address (RARP). /
590	#define RTNET_ARPOP_REVREPLY UINT16_C(4)
591	#define RTNET_ARPOP_INVREQUEST UINT16_C(8) /*< Inverse ARP. /
592	#define RTNET_ARPOP_INVREPLY UINT16_C(9)
593	/** Check if an ARP operation is a request or not. */
594	#define RTNET_ARPOP_IS_REQUEST(Op) ((Op) & 1)
595	/** Check if an ARP operation is a reply or not. */
596	#define RTNET_ARPOP_IS_REPLY(Op) (!RTNET_ARPOP_IS_REQUEST(Op))
597	/** @} */
598
599
600	/**
601	* Ethernet IPv4 + 6-byte MAC ARP request packet.
602	*/
603	#pragma pack(1)
604	typedef struct RTNETARPIPV4
605	{
606	/** ARP header. */
607	RTNETARPHDR Hdr;
608	/** The sender hardware address. */
609	RTMAC ar_sha;
610	/** The sender protocol address. */
611	RTNETADDRIPV4 ar_spa;
612	/** The target hardware address. */
613	RTMAC ar_tha;
614	/** The arget protocol address. */
615	RTNETADDRIPV4 ar_tpa;
616	} RTNETARPIPV4;
617	#pragma pack(0)
618	AssertCompileSize(RTNETARPIPV4, 8+6+4+6+4);
619	/** Pointer to an ethernet IPv4+MAC ARP request packet. */
620	typedef RTNETARPIPV4 *PRTNETARPIPV4;
621	/** Pointer to a const ethernet IPv4+MAC ARP request packet. */
622	typedef RTNETARPIPV4 const *PCRTNETARPIPV4;
623
624
625	/** @todo RTNETNDP (IPv6)*/
626
627
628	/** @} */
629
630	__END_DECLS
631
632	#endif
633

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source: vbox/trunk/include/iprt/net.h@ 11049

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