source: azure_iot_hub_f767zi/trunk/asp_baseplatform/lwip/lwip-2.1.2/src/include/lwip/ip6_addr.h@ 457

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1/**
2 * @file
3 *
4 * IPv6 addresses.
5 */
6
7/*
8 * Copyright (c) 2010 Inico Technologies Ltd.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without modification,
12 * are permitted provided that the following conditions are met:
13 *
14 * 1. Redistributions of source code must retain the above copyright notice,
15 * this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright notice,
17 * this list of conditions and the following disclaimer in the documentation
18 * and/or other materials provided with the distribution.
19 * 3. The name of the author may not be used to endorse or promote products
20 * derived from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
25 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
26 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
27 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
30 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
31 * OF SUCH DAMAGE.
32 *
33 * This file is part of the lwIP TCP/IP stack.
34 *
35 * Author: Ivan Delamer <delamer@inicotech.com>
36 *
37 * Structs and macros for handling IPv6 addresses.
38 *
39 * Please coordinate changes and requests with Ivan Delamer
40 * <delamer@inicotech.com>
41 */
42#ifndef LWIP_HDR_IP6_ADDR_H
43#define LWIP_HDR_IP6_ADDR_H
44
45#include "lwip/opt.h"
46#include "def.h"
47
48#if LWIP_IPV6 /* don't build if not configured for use in lwipopts.h */
49
50#include "lwip/ip6_zone.h"
51
52#ifdef __cplusplus
53extern "C" {
54#endif
55
56
57/** This is the aligned version of ip6_addr_t,
58 used as local variable, on the stack, etc. */
59struct ip6_addr {
60 u32_t addr[4];
61#if LWIP_IPV6_SCOPES
62 u8_t zone;
63#endif /* LWIP_IPV6_SCOPES */
64};
65
66/** IPv6 address */
67typedef struct ip6_addr ip6_addr_t;
68
69/** Set an IPv6 partial address given by byte-parts */
70#define IP6_ADDR_PART(ip6addr, index, a,b,c,d) \
71 (ip6addr)->addr[index] = PP_HTONL(LWIP_MAKEU32(a,b,c,d))
72
73/** Set a full IPv6 address by passing the 4 u32_t indices in network byte order
74 (use PP_HTONL() for constants) */
75#define IP6_ADDR(ip6addr, idx0, idx1, idx2, idx3) do { \
76 (ip6addr)->addr[0] = idx0; \
77 (ip6addr)->addr[1] = idx1; \
78 (ip6addr)->addr[2] = idx2; \
79 (ip6addr)->addr[3] = idx3; \
80 ip6_addr_clear_zone(ip6addr); } while(0)
81
82/** Access address in 16-bit block */
83#define IP6_ADDR_BLOCK1(ip6addr) ((u16_t)((lwip_htonl((ip6addr)->addr[0]) >> 16) & 0xffff))
84/** Access address in 16-bit block */
85#define IP6_ADDR_BLOCK2(ip6addr) ((u16_t)((lwip_htonl((ip6addr)->addr[0])) & 0xffff))
86/** Access address in 16-bit block */
87#define IP6_ADDR_BLOCK3(ip6addr) ((u16_t)((lwip_htonl((ip6addr)->addr[1]) >> 16) & 0xffff))
88/** Access address in 16-bit block */
89#define IP6_ADDR_BLOCK4(ip6addr) ((u16_t)((lwip_htonl((ip6addr)->addr[1])) & 0xffff))
90/** Access address in 16-bit block */
91#define IP6_ADDR_BLOCK5(ip6addr) ((u16_t)((lwip_htonl((ip6addr)->addr[2]) >> 16) & 0xffff))
92/** Access address in 16-bit block */
93#define IP6_ADDR_BLOCK6(ip6addr) ((u16_t)((lwip_htonl((ip6addr)->addr[2])) & 0xffff))
94/** Access address in 16-bit block */
95#define IP6_ADDR_BLOCK7(ip6addr) ((u16_t)((lwip_htonl((ip6addr)->addr[3]) >> 16) & 0xffff))
96/** Access address in 16-bit block */
97#define IP6_ADDR_BLOCK8(ip6addr) ((u16_t)((lwip_htonl((ip6addr)->addr[3])) & 0xffff))
98
99/** Copy IPv6 address - faster than ip6_addr_set: no NULL check */
100#define ip6_addr_copy(dest, src) do{(dest).addr[0] = (src).addr[0]; \
101 (dest).addr[1] = (src).addr[1]; \
102 (dest).addr[2] = (src).addr[2]; \
103 (dest).addr[3] = (src).addr[3]; \
104 ip6_addr_copy_zone((dest), (src)); }while(0)
105/** Safely copy one IPv6 address to another (src may be NULL) */
106#define ip6_addr_set(dest, src) do{(dest)->addr[0] = (src) == NULL ? 0 : (src)->addr[0]; \
107 (dest)->addr[1] = (src) == NULL ? 0 : (src)->addr[1]; \
108 (dest)->addr[2] = (src) == NULL ? 0 : (src)->addr[2]; \
109 (dest)->addr[3] = (src) == NULL ? 0 : (src)->addr[3]; \
110 ip6_addr_set_zone((dest), (src) == NULL ? IP6_NO_ZONE : ip6_addr_zone(src)); }while(0)
111
112/** Copy packed IPv6 address to unpacked IPv6 address; zone is not set */
113#define ip6_addr_copy_from_packed(dest, src) do{(dest).addr[0] = (src).addr[0]; \
114 (dest).addr[1] = (src).addr[1]; \
115 (dest).addr[2] = (src).addr[2]; \
116 (dest).addr[3] = (src).addr[3]; \
117 ip6_addr_clear_zone(&dest); }while(0)
118
119/** Copy unpacked IPv6 address to packed IPv6 address; zone is lost */
120#define ip6_addr_copy_to_packed(dest, src) do{(dest).addr[0] = (src).addr[0]; \
121 (dest).addr[1] = (src).addr[1]; \
122 (dest).addr[2] = (src).addr[2]; \
123 (dest).addr[3] = (src).addr[3]; }while(0)
124
125/** Set complete address to zero */
126#define ip6_addr_set_zero(ip6addr) do{(ip6addr)->addr[0] = 0; \
127 (ip6addr)->addr[1] = 0; \
128 (ip6addr)->addr[2] = 0; \
129 (ip6addr)->addr[3] = 0; \
130 ip6_addr_clear_zone(ip6addr);}while(0)
131
132/** Set address to ipv6 'any' (no need for lwip_htonl()) */
133#define ip6_addr_set_any(ip6addr) ip6_addr_set_zero(ip6addr)
134/** Set address to ipv6 loopback address */
135#define ip6_addr_set_loopback(ip6addr) do{(ip6addr)->addr[0] = 0; \
136 (ip6addr)->addr[1] = 0; \
137 (ip6addr)->addr[2] = 0; \
138 (ip6addr)->addr[3] = PP_HTONL(0x00000001UL); \
139 ip6_addr_clear_zone(ip6addr);}while(0)
140/** Safely copy one IPv6 address to another and change byte order
141 * from host- to network-order. */
142#define ip6_addr_set_hton(dest, src) do{(dest)->addr[0] = (src) == NULL ? 0 : lwip_htonl((src)->addr[0]); \
143 (dest)->addr[1] = (src) == NULL ? 0 : lwip_htonl((src)->addr[1]); \
144 (dest)->addr[2] = (src) == NULL ? 0 : lwip_htonl((src)->addr[2]); \
145 (dest)->addr[3] = (src) == NULL ? 0 : lwip_htonl((src)->addr[3]); \
146 ip6_addr_set_zone((dest), (src) == NULL ? IP6_NO_ZONE : ip6_addr_zone(src));}while(0)
147
148
149/** Compare IPv6 networks, ignoring zone information. To be used sparingly! */
150#define ip6_addr_netcmp_zoneless(addr1, addr2) (((addr1)->addr[0] == (addr2)->addr[0]) && \
151 ((addr1)->addr[1] == (addr2)->addr[1]))
152
153/**
154 * Determine if two IPv6 address are on the same network.
155 *
156 * @param addr1 IPv6 address 1
157 * @param addr2 IPv6 address 2
158 * @return 1 if the network identifiers of both address match, 0 if not
159 */
160#define ip6_addr_netcmp(addr1, addr2) (ip6_addr_netcmp_zoneless((addr1), (addr2)) && \
161 ip6_addr_cmp_zone((addr1), (addr2)))
162
163/* Exact-host comparison *after* ip6_addr_netcmp() succeeded, for efficiency. */
164#define ip6_addr_nethostcmp(addr1, addr2) (((addr1)->addr[2] == (addr2)->addr[2]) && \
165 ((addr1)->addr[3] == (addr2)->addr[3]))
166
167/** Compare IPv6 addresses, ignoring zone information. To be used sparingly! */
168#define ip6_addr_cmp_zoneless(addr1, addr2) (((addr1)->addr[0] == (addr2)->addr[0]) && \
169 ((addr1)->addr[1] == (addr2)->addr[1]) && \
170 ((addr1)->addr[2] == (addr2)->addr[2]) && \
171 ((addr1)->addr[3] == (addr2)->addr[3]))
172/**
173 * Determine if two IPv6 addresses are the same. In particular, the address
174 * part of both must be the same, and the zone must be compatible.
175 *
176 * @param addr1 IPv6 address 1
177 * @param addr2 IPv6 address 2
178 * @return 1 if the addresses are considered equal, 0 if not
179 */
180#define ip6_addr_cmp(addr1, addr2) (ip6_addr_cmp_zoneless((addr1), (addr2)) && \
181 ip6_addr_cmp_zone((addr1), (addr2)))
182
183/** Compare IPv6 address to packed address and zone */
184#define ip6_addr_cmp_packed(ip6addr, paddr, zone_idx) (((ip6addr)->addr[0] == (paddr)->addr[0]) && \
185 ((ip6addr)->addr[1] == (paddr)->addr[1]) && \
186 ((ip6addr)->addr[2] == (paddr)->addr[2]) && \
187 ((ip6addr)->addr[3] == (paddr)->addr[3]) && \
188 ip6_addr_equals_zone((ip6addr), (zone_idx)))
189
190#define ip6_get_subnet_id(ip6addr) (lwip_htonl((ip6addr)->addr[2]) & 0x0000ffffUL)
191
192#define ip6_addr_isany_val(ip6addr) (((ip6addr).addr[0] == 0) && \
193 ((ip6addr).addr[1] == 0) && \
194 ((ip6addr).addr[2] == 0) && \
195 ((ip6addr).addr[3] == 0))
196#define ip6_addr_isany(ip6addr) (((ip6addr) == NULL) || ip6_addr_isany_val(*(ip6addr)))
197
198#define ip6_addr_isloopback(ip6addr) (((ip6addr)->addr[0] == 0UL) && \
199 ((ip6addr)->addr[1] == 0UL) && \
200 ((ip6addr)->addr[2] == 0UL) && \
201 ((ip6addr)->addr[3] == PP_HTONL(0x00000001UL)))
202
203#define ip6_addr_isglobal(ip6addr) (((ip6addr)->addr[0] & PP_HTONL(0xe0000000UL)) == PP_HTONL(0x20000000UL))
204
205#define ip6_addr_islinklocal(ip6addr) (((ip6addr)->addr[0] & PP_HTONL(0xffc00000UL)) == PP_HTONL(0xfe800000UL))
206
207#define ip6_addr_issitelocal(ip6addr) (((ip6addr)->addr[0] & PP_HTONL(0xffc00000UL)) == PP_HTONL(0xfec00000UL))
208
209#define ip6_addr_isuniquelocal(ip6addr) (((ip6addr)->addr[0] & PP_HTONL(0xfe000000UL)) == PP_HTONL(0xfc000000UL))
210
211#define ip6_addr_isipv4mappedipv6(ip6addr) (((ip6addr)->addr[0] == 0) && ((ip6addr)->addr[1] == 0) && (((ip6addr)->addr[2]) == PP_HTONL(0x0000FFFFUL)))
212
213#define ip6_addr_ismulticast(ip6addr) (((ip6addr)->addr[0] & PP_HTONL(0xff000000UL)) == PP_HTONL(0xff000000UL))
214#define ip6_addr_multicast_transient_flag(ip6addr) ((ip6addr)->addr[0] & PP_HTONL(0x00100000UL))
215#define ip6_addr_multicast_prefix_flag(ip6addr) ((ip6addr)->addr[0] & PP_HTONL(0x00200000UL))
216#define ip6_addr_multicast_rendezvous_flag(ip6addr) ((ip6addr)->addr[0] & PP_HTONL(0x00400000UL))
217#define ip6_addr_multicast_scope(ip6addr) ((lwip_htonl((ip6addr)->addr[0]) >> 16) & 0xf)
218#define IP6_MULTICAST_SCOPE_RESERVED 0x0
219#define IP6_MULTICAST_SCOPE_RESERVED0 0x0
220#define IP6_MULTICAST_SCOPE_INTERFACE_LOCAL 0x1
221#define IP6_MULTICAST_SCOPE_LINK_LOCAL 0x2
222#define IP6_MULTICAST_SCOPE_RESERVED3 0x3
223#define IP6_MULTICAST_SCOPE_ADMIN_LOCAL 0x4
224#define IP6_MULTICAST_SCOPE_SITE_LOCAL 0x5
225#define IP6_MULTICAST_SCOPE_ORGANIZATION_LOCAL 0x8
226#define IP6_MULTICAST_SCOPE_GLOBAL 0xe
227#define IP6_MULTICAST_SCOPE_RESERVEDF 0xf
228#define ip6_addr_ismulticast_iflocal(ip6addr) (((ip6addr)->addr[0] & PP_HTONL(0xff8f0000UL)) == PP_HTONL(0xff010000UL))
229#define ip6_addr_ismulticast_linklocal(ip6addr) (((ip6addr)->addr[0] & PP_HTONL(0xff8f0000UL)) == PP_HTONL(0xff020000UL))
230#define ip6_addr_ismulticast_adminlocal(ip6addr) (((ip6addr)->addr[0] & PP_HTONL(0xff8f0000UL)) == PP_HTONL(0xff040000UL))
231#define ip6_addr_ismulticast_sitelocal(ip6addr) (((ip6addr)->addr[0] & PP_HTONL(0xff8f0000UL)) == PP_HTONL(0xff050000UL))
232#define ip6_addr_ismulticast_orglocal(ip6addr) (((ip6addr)->addr[0] & PP_HTONL(0xff8f0000UL)) == PP_HTONL(0xff080000UL))
233#define ip6_addr_ismulticast_global(ip6addr) (((ip6addr)->addr[0] & PP_HTONL(0xff8f0000UL)) == PP_HTONL(0xff0e0000UL))
234
235/* Scoping note: while interface-local and link-local multicast addresses do
236 * have a scope (i.e., they are meaningful only in the context of a particular
237 * interface), the following functions are not assigning or comparing zone
238 * indices. The reason for this is backward compatibility. Any call site that
239 * produces a non-global multicast address must assign a multicast address as
240 * appropriate itself. */
241
242#define ip6_addr_isallnodes_iflocal(ip6addr) (((ip6addr)->addr[0] == PP_HTONL(0xff010000UL)) && \
243 ((ip6addr)->addr[1] == 0UL) && \
244 ((ip6addr)->addr[2] == 0UL) && \
245 ((ip6addr)->addr[3] == PP_HTONL(0x00000001UL)))
246
247#define ip6_addr_isallnodes_linklocal(ip6addr) (((ip6addr)->addr[0] == PP_HTONL(0xff020000UL)) && \
248 ((ip6addr)->addr[1] == 0UL) && \
249 ((ip6addr)->addr[2] == 0UL) && \
250 ((ip6addr)->addr[3] == PP_HTONL(0x00000001UL)))
251#define ip6_addr_set_allnodes_linklocal(ip6addr) do{(ip6addr)->addr[0] = PP_HTONL(0xff020000UL); \
252 (ip6addr)->addr[1] = 0; \
253 (ip6addr)->addr[2] = 0; \
254 (ip6addr)->addr[3] = PP_HTONL(0x00000001UL); \
255 ip6_addr_clear_zone(ip6addr); }while(0)
256
257#define ip6_addr_isallrouters_linklocal(ip6addr) (((ip6addr)->addr[0] == PP_HTONL(0xff020000UL)) && \
258 ((ip6addr)->addr[1] == 0UL) && \
259 ((ip6addr)->addr[2] == 0UL) && \
260 ((ip6addr)->addr[3] == PP_HTONL(0x00000002UL)))
261#define ip6_addr_set_allrouters_linklocal(ip6addr) do{(ip6addr)->addr[0] = PP_HTONL(0xff020000UL); \
262 (ip6addr)->addr[1] = 0; \
263 (ip6addr)->addr[2] = 0; \
264 (ip6addr)->addr[3] = PP_HTONL(0x00000002UL); \
265 ip6_addr_clear_zone(ip6addr); }while(0)
266
267#define ip6_addr_issolicitednode(ip6addr) ( ((ip6addr)->addr[0] == PP_HTONL(0xff020000UL)) && \
268 ((ip6addr)->addr[2] == PP_HTONL(0x00000001UL)) && \
269 (((ip6addr)->addr[3] & PP_HTONL(0xff000000UL)) == PP_HTONL(0xff000000UL)) )
270
271#define ip6_addr_set_solicitednode(ip6addr, if_id) do{(ip6addr)->addr[0] = PP_HTONL(0xff020000UL); \
272 (ip6addr)->addr[1] = 0; \
273 (ip6addr)->addr[2] = PP_HTONL(0x00000001UL); \
274 (ip6addr)->addr[3] = (PP_HTONL(0xff000000UL) | (if_id)); \
275 ip6_addr_clear_zone(ip6addr); }while(0)
276
277#define ip6_addr_cmp_solicitednode(ip6addr, sn_addr) (((ip6addr)->addr[0] == PP_HTONL(0xff020000UL)) && \
278 ((ip6addr)->addr[1] == 0) && \
279 ((ip6addr)->addr[2] == PP_HTONL(0x00000001UL)) && \
280 ((ip6addr)->addr[3] == (PP_HTONL(0xff000000UL) | (sn_addr)->addr[3])))
281
282/* IPv6 address states. */
283#define IP6_ADDR_INVALID 0x00
284#define IP6_ADDR_TENTATIVE 0x08
285#define IP6_ADDR_TENTATIVE_1 0x09 /* 1 probe sent */
286#define IP6_ADDR_TENTATIVE_2 0x0a /* 2 probes sent */
287#define IP6_ADDR_TENTATIVE_3 0x0b /* 3 probes sent */
288#define IP6_ADDR_TENTATIVE_4 0x0c /* 4 probes sent */
289#define IP6_ADDR_TENTATIVE_5 0x0d /* 5 probes sent */
290#define IP6_ADDR_TENTATIVE_6 0x0e /* 6 probes sent */
291#define IP6_ADDR_TENTATIVE_7 0x0f /* 7 probes sent */
292#define IP6_ADDR_VALID 0x10 /* This bit marks an address as valid (preferred or deprecated) */
293#define IP6_ADDR_PREFERRED 0x30
294#define IP6_ADDR_DEPRECATED 0x10 /* Same as VALID (valid but not preferred) */
295#define IP6_ADDR_DUPLICATED 0x40 /* Failed DAD test, not valid */
296
297#define IP6_ADDR_TENTATIVE_COUNT_MASK 0x07 /* 1-7 probes sent */
298
299#define ip6_addr_isinvalid(addr_state) (addr_state == IP6_ADDR_INVALID)
300#define ip6_addr_istentative(addr_state) (addr_state & IP6_ADDR_TENTATIVE)
301#define ip6_addr_isvalid(addr_state) (addr_state & IP6_ADDR_VALID) /* Include valid, preferred, and deprecated. */
302#define ip6_addr_ispreferred(addr_state) (addr_state == IP6_ADDR_PREFERRED)
303#define ip6_addr_isdeprecated(addr_state) (addr_state == IP6_ADDR_DEPRECATED)
304#define ip6_addr_isduplicated(addr_state) (addr_state == IP6_ADDR_DUPLICATED)
305
306#if LWIP_IPV6_ADDRESS_LIFETIMES
307#define IP6_ADDR_LIFE_STATIC (0)
308#define IP6_ADDR_LIFE_INFINITE (0xffffffffUL)
309#define ip6_addr_life_isstatic(addr_life) ((addr_life) == IP6_ADDR_LIFE_STATIC)
310#define ip6_addr_life_isinfinite(addr_life) ((addr_life) == IP6_ADDR_LIFE_INFINITE)
311#endif /* LWIP_IPV6_ADDRESS_LIFETIMES */
312
313#define ip6_addr_debug_print_parts(debug, a, b, c, d, e, f, g, h) \
314 LWIP_DEBUGF(debug, ("%" X16_F ":%" X16_F ":%" X16_F ":%" X16_F ":%" X16_F ":%" X16_F ":%" X16_F ":%" X16_F, \
315 a, b, c, d, e, f, g, h))
316#define ip6_addr_debug_print(debug, ipaddr) \
317 ip6_addr_debug_print_parts(debug, \
318 (u16_t)((ipaddr) != NULL ? IP6_ADDR_BLOCK1(ipaddr) : 0), \
319 (u16_t)((ipaddr) != NULL ? IP6_ADDR_BLOCK2(ipaddr) : 0), \
320 (u16_t)((ipaddr) != NULL ? IP6_ADDR_BLOCK3(ipaddr) : 0), \
321 (u16_t)((ipaddr) != NULL ? IP6_ADDR_BLOCK4(ipaddr) : 0), \
322 (u16_t)((ipaddr) != NULL ? IP6_ADDR_BLOCK5(ipaddr) : 0), \
323 (u16_t)((ipaddr) != NULL ? IP6_ADDR_BLOCK6(ipaddr) : 0), \
324 (u16_t)((ipaddr) != NULL ? IP6_ADDR_BLOCK7(ipaddr) : 0), \
325 (u16_t)((ipaddr) != NULL ? IP6_ADDR_BLOCK8(ipaddr) : 0))
326#define ip6_addr_debug_print_val(debug, ipaddr) \
327 ip6_addr_debug_print_parts(debug, \
328 IP6_ADDR_BLOCK1(&(ipaddr)), \
329 IP6_ADDR_BLOCK2(&(ipaddr)), \
330 IP6_ADDR_BLOCK3(&(ipaddr)), \
331 IP6_ADDR_BLOCK4(&(ipaddr)), \
332 IP6_ADDR_BLOCK5(&(ipaddr)), \
333 IP6_ADDR_BLOCK6(&(ipaddr)), \
334 IP6_ADDR_BLOCK7(&(ipaddr)), \
335 IP6_ADDR_BLOCK8(&(ipaddr)))
336
337#define IP6ADDR_STRLEN_MAX 46
338
339int ip6addr_aton(const char *cp, ip6_addr_t *addr);
340/** returns ptr to static buffer; not reentrant! */
341char *ip6addr_ntoa(const ip6_addr_t *addr);
342char *ip6addr_ntoa_r(const ip6_addr_t *addr, char *buf, int buflen);
343
344
345
346#ifdef __cplusplus
347}
348#endif
349
350#endif /* LWIP_IPV6 */
351
352#endif /* LWIP_HDR_IP6_ADDR_H */
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