net.h@ 11052

Last change on this file since 11052 was 11052, checked in by vboxsync, 16 years ago
iprt/net.h: Added minimum lengths for DHCP and BOOTP packets.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 18.6 KB

Line
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	/** Minimum BOOTP packet length. For quick validation, no standard thing really. */
308	#define RTNETBOOTP_MIN_LEN 0xec
309	/** Minimum DHCP packet length. For quick validation, no standard thing really. */
310	#define RTNETBOOTP_DHCP_MIN_LEN 0xf1
311
312	/** @name BOOTP packet opcode values
313	* @{ */
314	#define RTNETBOOTP_OP_REQUEST 1
315	#define RTNETBOOTP_OP_REPLY 2
316	/** @} */
317
318	/** @name DHCP flags (RTNETBOOTP::bp_flags)
319	* @{ */
320	#define RTNET_DHCP_FLAGS_NO_BROADCAST UINT16_C(0x8000) /** @todo check test!!! */
321	/** @} */
322
323	/** The DHCP cookie (network endian). */
324	#define RTNET_DHCP_COOKIE UINT32_C(0x63825363)
325
326	/**
327	* An IPv4 DHCP option header.
328	*/
329	typedef struct RTNETDHCPOPT
330	{
331	/** 00 - The DHCP option. */
332	uint8_t dhcp_opt;
333	/** 01 - The data length (excluding this header). */
334	uint8_t dhcp_len;
335	/* 02 - The option data follows here, optional and of variable length. */
336	} RTNETDHCPOPT;
337	AssertCompileSize(RTNETDHCPOPT, 2);
338	/** Pointer to a DHCP option header. */
339	typedef RTNETDHCPOPT *PRTNETDHCPOPT;
340	/** Pointer to a const DHCP option header. */
341	typedef RTNETDHCPOPT const *PCRTNETDHCPOPT;
342
343	/** @name DHCP options
344	* @{ */
345	/** 1 byte padding, this has no dhcp_len field. */
346	#define RTNET_DHCP_OPT_PAD 0
347	/** Have a 8-bit message type value as data, see RTNET_DHCP_MT_. /
348	#define RTNET_DHCP_OPT_MSG_TYPE 53
349	/** Marks the end of the DHCP options, this has no dhcp_len field. */
350	#define RTNET_DHCP_OPT_END 255
351	/** @} */
352
353	/** @name DHCP Message Types (option 53)
354	* @{ */
355	#define RTNET_DHCP_MT_DISCOVER 1
356	#define RTNET_DHCP_MT_OFFER 2
357	#define RTNET_DHCP_MT_REQUEST 3
358	#define RTNET_DHCP_MT_DECLINE 4
359	#define RTNET_DHCP_MT_ACK 5
360	#define RTNET_DHCP_MT_NAC 6
361	#define RTNET_DHCP_MT_RELEASE 7
362	#define RTNET_DHCP_MT_INFORM 8
363	/** @} */
364
365	RTDECL(bool) RTNetIPv4IsDHCPValid(PCRTNETUDP pUdpHdr, PCRTNETBOOTP pDhcp, size_t cbDhcp, uint8_t *pMsgType);
366
367
368	/**
369	* IPv4 DHCP packet.
370	* @obsolete Use RTNETBOOTP.
371	*/
372	#pragma pack(1)
373	typedef struct RTNETDHCP
374	{
375	/** 00 - The packet opcode. */
376	uint8_t Op;
377	/** Hardware address type. */
378	uint8_t HType;
379	/** Hardware address length. */
380	uint8_t HLen;
381	uint8_t Hops;
382	uint32_t XID;
383	uint16_t Secs;
384	uint16_t Flags;
385	/** Client IPv4 address. */
386	RTNETADDRIPV4 CIAddr;
387	/** Your IPv4 address. */
388	RTNETADDRIPV4 YIAddr;
389	/** Server IPv4 address. */
390	RTNETADDRIPV4 SIAddr;
391	/** Gateway IPv4 address. */
392	RTNETADDRIPV4 GIAddr;
393	/** Client hardware address. */
394	uint8_t CHAddr[16];
395	/** Server name. */
396	uint8_t SName[64];
397	uint8_t File[128];
398	uint8_t abMagic[4];
399	uint8_t DhcpOpt;
400	uint8_t DhcpLen; /* 1 */
401	uint8_t DhcpReq;
402	uint8_t abOptions[57];
403	} RTNETDHCP;
404	#pragma pack(0)
405	/** @todo AssertCompileSize(RTNETDHCP, ); */
406	/** Pointer to a DHCP packet. */
407	typedef RTNETDHCP *PRTNETDHCP;
408	/** Pointer to a const DHCP packet. */
409	typedef RTNETDHCP const *PCRTNETDHCP;
410
411
412	/**
413	* TCP packet.
414	*/
415	#pragma pack(1)
416	typedef struct RTNETTCP
417	{
418	/** 00 - The source port. */
419	uint16_t th_sport;
420	/** 02 - The destination port. */
421	uint16_t th_dport;
422	/** 04 - The sequence number. */
423	uint32_t th_seq;
424	/** 08 - The acknowledgement number. */
425	uint32_t th_ack;
426	#ifdef RT_BIG_ENDIAN
427	unsigned int th_win : 16;
428	unsigned int th_flags : 8;
429	unsigned int th_off : 4;
430	unsigned int th_x2 : 4;
431	#else
432	/** 0c:0 - Reserved. */
433	unsigned int th_x2 : 4;
434	/** 0c:4 - The data offset given as a dword count from the start of this header. */
435	unsigned int th_off : 4;
436	/** 0d - flags. */
437	unsigned int th_flags : 8;
438	/** 0e - The window. */
439	unsigned int th_win : 16;
440	#endif
441	/** 10 - The checksum of the pseudo header, the TCP header and the data. */
442	uint16_t th_sum;
443	/** 12 - The urgent pointer. */
444	uint16_t th_urp;
445	/* (options follows here and then the data (aka text).) */
446	} RTNETTCP;
447	#pragma pack(0)
448	AssertCompileSize(RTNETTCP, 20);
449	/** Pointer to a TCP packet. */
450	typedef RTNETTCP *PRTNETTCP;
451	/** Pointer to a const TCP packet. */
452	typedef RTNETTCP const *PCRTNETTCP;
453
454	/** The minimum TCP header length (in bytes). (RTNETTCP::th_off * 4) */
455	#define RTNETTCP_MIN_LEN (20)
456
457	RTDECL(uint32_t) RTNetIPv4AddTCPChecksum(PCRTNETTCP pTcpHdr, uint32_t u32Sum);
458	RTDECL(uint16_t) RTNetIPv4TCPChecksum(PCRTNETIPV4 pIpHdr, PCRTNETTCP pTcpHdr, void const *pvData);
459	RTDECL(bool) RTNetIPv4IsTCPSizeValid(PCRTNETIPV4 pIpHdr, PCRTNETTCP pTcpHdr, size_t cbHdrMax, size_t cbPktMax);
460	RTDECL(bool) RTNetIPv4IsTCPValid(PCRTNETIPV4 pIpHdr, PCRTNETTCP pTcpHdr, size_t cbHdrMax, void const *pvData, size_t cbPktMax);
461
462
463	/**
464	* IPv4 ICMP packet header.
465	*/
466	#pragma pack(1)
467	typedef struct RTNETICMPV4HDR
468	{
469	/** 00 - The ICMP message type. */
470	uint8_t icmp_type;
471	/** 01 - Type specific code that further qualifies the message. */
472	uint8_t icmp_code;
473	/** 02 - Checksum of the ICMP message. */
474	uint16_t icmp_cksum;
475	} RTNETICMPV4HDR;
476	#pragma pack(0)
477	AssertCompileSize(RTNETICMPV4HDR, 4);
478	/** Pointer to an ICMP packet header. */
479	typedef RTNETICMPV4HDR *PRTNETICMPV4HDR;
480	/** Pointer to a const ICMP packet header. */
481	typedef RTNETICMPV4HDR const *PCRTNETICMPV4HDR;
482
483	/** @name ICMP (v4) message types.
484	* @{ */
485	#define RTNETICMPV4_TYPE_ECHO_REPLY 0
486	#define RTNETICMPV4_TYPE_ECHO_REQUEST 8
487	#define RTNETICMPV4_TYPE_TRACEROUTE 30
488	/** @} */
489
490	/**
491	* IPv4 ICMP ECHO Reply & Request packet.
492	*/
493	#pragma pack(1)
494	typedef struct RTNETICMPV4ECHO
495	{
496	/** 00 - The ICMP header. */
497	RTNETICMPV4HDR Hdr;
498	/** 04 - The identifier to help the requestor match up the reply.
499	* Can be 0. Typically fixed value. */
500	uint16_t icmp_id;
501	/** 06 - The sequence number to help the requestor match up the reply.
502	* Can be 0. Typically incrementing between requests. */
503	uint16_t icmp_seq;
504	/** 08 - Variable length data that is to be returned unmodified in the reply. */
505	uint8_t icmp_data[1];
506	} RTNETICMPV4ECHO;
507	#pragma pack(0)
508	AssertCompileSize(RTNETICMPV4ECHO, 9);
509	/** Pointer to an ICMP ECHO packet. */
510	typedef RTNETICMPV4ECHO *PRTNETICMPV4ECHO;
511	/** Pointer to a const ICMP ECHO packet. */
512	typedef RTNETICMPV4ECHO const *PCRTNETICMPV4ECHO;
513
514	/**
515	* IPv4 ICMP TRACEROUTE packet.
516	* This is an reply to an IP packet with the traceroute option set.
517	*/
518	#pragma pack(1)
519	typedef struct RTNETICMPV4TRACEROUTE
520	{
521	/** 00 - The ICMP header. */
522	RTNETICMPV4HDR Hdr;
523	/** 04 - Identifier copied from the traceroute option's ID number. */
524	uint16_t icmp_id;
525	/** 06 - Unused. (Possibly an icmp_seq?) */
526	uint16_t icmp_void;
527	/** 08 - Outbound hop count. From the IP packet causing this message. */
528	uint16_t icmp_ohc;
529	/** 0a - Return hop count. From the IP packet causing this message. */
530	uint16_t icmp_rhc;
531	/** 0c - Output link speed, 0 if not known. */
532	uint32_t icmp_speed;
533	/** 10 - Output link MTU, 0 if not known. */
534	uint32_t icmp_mtu;
535	} RTNETICMPV4TRACEROUTE;
536	#pragma pack(0)
537	AssertCompileSize(RTNETICMPV4TRACEROUTE, 20);
538	/** Pointer to an ICMP TRACEROUTE packet. */
539	typedef RTNETICMPV4TRACEROUTE *PRTNETICMPV4TRACEROUTE;
540	/** Pointer to a const ICMP TRACEROUTE packet. */
541	typedef RTNETICMPV4TRACEROUTE const *PCRTNETICMPV4TRACEROUTE;
542
543	/** @todo add more ICMPv4 as needed. */
544
545	/**
546	* IPv4 ICMP union packet.
547	*/
548	typedef union RTNETICMPV4
549	{
550	RTNETICMPV4HDR Hdr;
551	RTNETICMPV4ECHO Echo;
552	RTNETICMPV4TRACEROUTE Traceroute;
553	} RTNETICMPV4;
554	/** Pointer to an ICMP union packet. */
555	typedef RTNETICMPV4 *PRTNETICMPV4;
556	/** Pointer to a const ICMP union packet. */
557	typedef RTNETICMPV4 const *PCRTNETICMPV4;
558
559
560	/** @todo add ICMPv6 when needed. */
561
562
563	/**
564	* Ethernet ARP header.
565	*/
566	#pragma pack(1)
567	typedef struct RTNETARPHDR
568	{
569	/** The hardware type. */
570	uint16_t ar_htype;
571	/** The protocol type (ethertype). */
572	uint16_t ar_ptype;
573	/** The hardware address length. */
574	uint8_t ar_hlen;
575	/** The protocol address length. */
576	uint8_t ar_plen;
577	/** The operation. */
578	uint16_t ar_oper;
579	} RTNETARPHDR;
580	#pragma pack(0)
581	AssertCompileSize(RTNETARPHDR, 8);
582	/** Pointer to an ethernet ARP header. */
583	typedef RTNETARPHDR *PRTNETARPHDR;
584	/** Pointer to a const ethernet ARP header. */
585	typedef RTNETARPHDR const *PCRTNETARPHDR;
586
587	/** ARP hardware type - ethernet. */
588	#define RTNET_ARP_ETHER UINT16_C(1)
589
590	/** @name ARP operations
591	* @{ */
592	#define RTNET_ARPOP_REQUEST UINT16_C(1) /*< Request hardward address given a protocol address (ARP). /
593	#define RTNET_ARPOP_REPLY UINT16_C(2)
594	#define RTNET_ARPOP_REVREQUEST UINT16_C(3) /*< Request protocol address given a hardware address (RARP). /
595	#define RTNET_ARPOP_REVREPLY UINT16_C(4)
596	#define RTNET_ARPOP_INVREQUEST UINT16_C(8) /*< Inverse ARP. /
597	#define RTNET_ARPOP_INVREPLY UINT16_C(9)
598	/** Check if an ARP operation is a request or not. */
599	#define RTNET_ARPOP_IS_REQUEST(Op) ((Op) & 1)
600	/** Check if an ARP operation is a reply or not. */
601	#define RTNET_ARPOP_IS_REPLY(Op) (!RTNET_ARPOP_IS_REQUEST(Op))
602	/** @} */
603
604
605	/**
606	* Ethernet IPv4 + 6-byte MAC ARP request packet.
607	*/
608	#pragma pack(1)
609	typedef struct RTNETARPIPV4
610	{
611	/** ARP header. */
612	RTNETARPHDR Hdr;
613	/** The sender hardware address. */
614	RTMAC ar_sha;
615	/** The sender protocol address. */
616	RTNETADDRIPV4 ar_spa;
617	/** The target hardware address. */
618	RTMAC ar_tha;
619	/** The arget protocol address. */
620	RTNETADDRIPV4 ar_tpa;
621	} RTNETARPIPV4;
622	#pragma pack(0)
623	AssertCompileSize(RTNETARPIPV4, 8+6+4+6+4);
624	/** Pointer to an ethernet IPv4+MAC ARP request packet. */
625	typedef RTNETARPIPV4 *PRTNETARPIPV4;
626	/** Pointer to a const ethernet IPv4+MAC ARP request packet. */
627	typedef RTNETARPIPV4 const *PCRTNETARPIPV4;
628
629
630	/** @todo RTNETNDP (IPv6)*/
631
632
633	/** @} */
634
635	__END_DECLS
636
637	#endif
638

Note: See TracBrowser for help on using the repository browser.

source: vbox/trunk/include/iprt/net.h@ 11052

Download in other formats: