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718e3744 | 1 | /* |
2 | * Prefix structure. | |
3 | * Copyright (C) 1998 Kunihiro Ishiguro | |
4 | * | |
5 | * This file is part of GNU Zebra. | |
6 | * | |
7 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * GNU Zebra is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
896014f4 DL |
17 | * You should have received a copy of the GNU General Public License along |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
718e3744 | 20 | */ |
21 | ||
22 | #ifndef _ZEBRA_PREFIX_H | |
23 | #define _ZEBRA_PREFIX_H | |
24 | ||
32ac65d9 | 25 | #ifdef SUNOS_5 |
d62a17ae | 26 | #include <sys/ethernet.h> |
32ac65d9 | 27 | #else |
d62a17ae | 28 | #ifdef GNU_LINUX |
29 | #include <net/ethernet.h> | |
30 | #else | |
31 | #include <netinet/if_ether.h> | |
32 | #endif | |
32ac65d9 | 33 | #endif |
8cc4198f | 34 | #include "sockunion.h" |
86f1ef44 | 35 | #include "ipaddr.h" |
de1a880c | 36 | #include "compiler.h" |
8cc4198f | 37 | |
7628d862 DS |
38 | #ifndef ETH_ALEN |
39 | #define ETH_ALEN 6 | |
40 | #endif | |
41 | ||
50f74cf1 | 42 | #define ESI_BYTES 10 |
2bb9eff4 | 43 | #define ESI_STR_LEN (3 * ESI_BYTES) |
50f74cf1 | 44 | |
7628d862 | 45 | #define ETHER_ADDR_STRLEN (3*ETH_ALEN) |
32ac65d9 LB |
46 | /* |
47 | * there isn't a portable ethernet address type. We define our | |
48 | * own to simplify internal handling | |
49 | */ | |
50 | struct ethaddr { | |
d7c0a89a | 51 | uint8_t octet[ETH_ALEN]; |
d62a17ae | 52 | } __attribute__((packed)); |
32ac65d9 LB |
53 | |
54 | ||
d62a17ae | 55 | /* length is the number of valuable bits of prefix structure |
9d303b37 DL |
56 | * 18 bytes is current length in structure, if address is ipv4 |
57 | * 30 bytes is in case of ipv6 | |
58 | */ | |
a440846e | 59 | #define PREFIX_LEN_ROUTE_TYPE_5_IPV4 (18*8) |
60 | #define PREFIX_LEN_ROUTE_TYPE_5_IPV6 (30*8) | |
61 | ||
3714a385 | 62 | typedef struct esi_t_ { |
63 | uint8_t val[10]; | |
64 | } esi_t; | |
65 | ||
66 | struct evpn_ead_addr { | |
67 | esi_t esi; | |
68 | uint32_t eth_tag; | |
69 | }; | |
70 | ||
71 | struct evpn_macip_addr { | |
72 | uint32_t eth_tag; | |
d7c0a89a | 73 | uint8_t ip_prefix_length; |
d62a17ae | 74 | struct ethaddr mac; |
3714a385 | 75 | struct ipaddr ip; |
76 | }; | |
77 | ||
78 | struct evpn_imet_addr { | |
d62a17ae | 79 | uint32_t eth_tag; |
3714a385 | 80 | uint8_t ip_prefix_length; |
81 | struct ipaddr ip; | |
82 | }; | |
83 | ||
84 | struct evpn_es_addr { | |
85 | esi_t esi; | |
86 | uint8_t ip_prefix_length; | |
d62a17ae | 87 | struct ipaddr ip; |
a440846e | 88 | }; |
89 | ||
3714a385 | 90 | struct evpn_prefix_addr { |
91 | uint32_t eth_tag; | |
92 | uint8_t ip_prefix_length; | |
93 | struct ipaddr ip; | |
94 | }; | |
95 | ||
96 | /* EVPN address (RFC 7432) */ | |
97 | struct evpn_addr { | |
98 | uint8_t route_type; | |
99 | union { | |
100 | struct evpn_ead_addr _ead_addr; | |
101 | struct evpn_macip_addr _macip_addr; | |
102 | struct evpn_imet_addr _imet_addr; | |
103 | struct evpn_es_addr _es_addr; | |
104 | struct evpn_prefix_addr _prefix_addr; | |
105 | } u; | |
106 | #define ead_addr u._ead_addr | |
107 | #define macip_addr u._macip_addr | |
108 | #define imet_addr u._imet_addr | |
109 | #define es_addr u._es_addr | |
110 | #define prefix_addr u._prefix_addr | |
111 | }; | |
a440846e | 112 | |
9d24baaa | 113 | /* |
114 | * A struct prefix contains an address family, a prefix length, and an | |
115 | * address. This can represent either a 'network prefix' as defined | |
116 | * by CIDR, where the 'host bits' of the prefix are 0 | |
117 | * (e.g. AF_INET:10.0.0.0/8), or an address and netmask | |
118 | * (e.g. AF_INET:10.0.0.9/8), such as might be configured on an | |
119 | * interface. | |
120 | */ | |
121 | ||
32ac65d9 LB |
122 | /* different OSes use different names */ |
123 | #if defined(AF_PACKET) | |
124 | #define AF_ETHERNET AF_PACKET | |
125 | #else | |
126 | #if defined(AF_LINK) | |
127 | #define AF_ETHERNET AF_LINK | |
128 | #endif | |
129 | #endif | |
130 | ||
b03b8898 DS |
131 | /* The 'family' in the prefix structure is internal to FRR and need not |
132 | * map to standard OS AF_ definitions except where needed for interacting | |
133 | * with the kernel. However, AF_ definitions are currently in use and | |
134 | * prevalent across the code. Define a new FRR-specific AF for EVPN to | |
135 | * distinguish between 'ethernet' (MAC-only) and 'evpn' prefixes and | |
136 | * ensure it does not conflict with any OS AF_ definition. | |
137 | */ | |
138 | #if !defined(AF_EVPN) | |
139 | #define AF_EVPN (AF_MAX + 1) | |
140 | #endif | |
141 | ||
9a14899b PG |
142 | #if !defined(AF_FLOWSPEC) |
143 | #define AF_FLOWSPEC (AF_MAX + 2) | |
144 | #endif | |
145 | ||
146 | struct flowspec_prefix { | |
147 | uint16_t prefixlen; /* length in bytes */ | |
148 | uintptr_t ptr; | |
149 | }; | |
150 | ||
b03b8898 | 151 | /* FRR generic prefix structure. */ |
d62a17ae | 152 | struct prefix { |
d7c0a89a QY |
153 | uint8_t family; |
154 | uint8_t prefixlen; | |
d62a17ae | 155 | union { |
d7c0a89a | 156 | uint8_t prefix; |
d62a17ae | 157 | struct in_addr prefix4; |
158 | struct in6_addr prefix6; | |
159 | struct { | |
160 | struct in_addr id; | |
161 | struct in_addr adv_router; | |
162 | } lp; | |
163 | struct ethaddr prefix_eth; /* AF_ETHERNET */ | |
d7c0a89a | 164 | uint8_t val[16]; |
d62a17ae | 165 | uintptr_t ptr; |
b03b8898 | 166 | struct evpn_addr prefix_evpn; /* AF_EVPN */ |
9a14899b | 167 | struct flowspec_prefix prefix_flowspec; /* AF_FLOWSPEC */ |
d62a17ae | 168 | } u __attribute__((aligned(8))); |
718e3744 | 169 | }; |
170 | ||
171 | /* IPv4 prefix structure. */ | |
d62a17ae | 172 | struct prefix_ipv4 { |
d7c0a89a QY |
173 | uint8_t family; |
174 | uint8_t prefixlen; | |
d62a17ae | 175 | struct in_addr prefix __attribute__((aligned(8))); |
718e3744 | 176 | }; |
177 | ||
178 | /* IPv6 prefix structure. */ | |
d62a17ae | 179 | struct prefix_ipv6 { |
d7c0a89a QY |
180 | uint8_t family; |
181 | uint8_t prefixlen; | |
d62a17ae | 182 | struct in6_addr prefix __attribute__((aligned(8))); |
718e3744 | 183 | }; |
718e3744 | 184 | |
d62a17ae | 185 | struct prefix_ls { |
d7c0a89a QY |
186 | uint8_t family; |
187 | uint8_t prefixlen; | |
d62a17ae | 188 | struct in_addr id __attribute__((aligned(8))); |
189 | struct in_addr adv_router; | |
718e3744 | 190 | }; |
191 | ||
192 | /* Prefix for routing distinguisher. */ | |
d62a17ae | 193 | struct prefix_rd { |
d7c0a89a QY |
194 | uint8_t family; |
195 | uint8_t prefixlen; | |
196 | uint8_t val[8] __attribute__((aligned(8))); | |
718e3744 | 197 | }; |
198 | ||
32ac65d9 | 199 | /* Prefix for ethernet. */ |
d62a17ae | 200 | struct prefix_eth { |
d7c0a89a QY |
201 | uint8_t family; |
202 | uint8_t prefixlen; | |
d62a17ae | 203 | struct ethaddr eth_addr __attribute__((aligned(8))); /* AF_ETHERNET */ |
32ac65d9 LB |
204 | }; |
205 | ||
86f1ef44 | 206 | /* EVPN prefix structure. */ |
d62a17ae | 207 | struct prefix_evpn { |
d7c0a89a QY |
208 | uint8_t family; |
209 | uint8_t prefixlen; | |
d62a17ae | 210 | struct evpn_addr prefix __attribute__((aligned(8))); |
86f1ef44 | 211 | }; |
212 | ||
3714a385 | 213 | static inline int is_evpn_prefix_ipaddr_none(const struct prefix_evpn *evp) |
214 | { | |
215 | if (evp->prefix.route_type == 2) | |
216 | return IS_IPADDR_NONE(&(evp)->prefix.macip_addr.ip); | |
217 | if (evp->prefix.route_type == 3) | |
218 | return IS_IPADDR_NONE(&(evp)->prefix.imet_addr.ip); | |
50f74cf1 | 219 | if (evp->prefix.route_type == 4) |
220 | return IS_IPADDR_NONE(&(evp)->prefix.es_addr.ip); | |
3714a385 | 221 | if (evp->prefix.route_type == 5) |
222 | return IS_IPADDR_NONE(&(evp)->prefix.prefix_addr.ip); | |
223 | return 0; | |
224 | } | |
225 | ||
226 | static inline int is_evpn_prefix_ipaddr_v4(const struct prefix_evpn *evp) | |
227 | { | |
228 | if (evp->prefix.route_type == 2) | |
229 | return IS_IPADDR_V4(&(evp)->prefix.macip_addr.ip); | |
230 | if (evp->prefix.route_type == 3) | |
231 | return IS_IPADDR_V4(&(evp)->prefix.imet_addr.ip); | |
50f74cf1 | 232 | if (evp->prefix.route_type == 4) |
233 | return IS_IPADDR_V4(&(evp)->prefix.es_addr.ip); | |
3714a385 | 234 | if (evp->prefix.route_type == 5) |
235 | return IS_IPADDR_V4(&(evp)->prefix.prefix_addr.ip); | |
236 | return 0; | |
237 | } | |
238 | ||
239 | static inline int is_evpn_prefix_ipaddr_v6(const struct prefix_evpn *evp) | |
240 | { | |
241 | if (evp->prefix.route_type == 2) | |
242 | return IS_IPADDR_V6(&(evp)->prefix.macip_addr.ip); | |
243 | if (evp->prefix.route_type == 3) | |
244 | return IS_IPADDR_V6(&(evp)->prefix.imet_addr.ip); | |
50f74cf1 | 245 | if (evp->prefix.route_type == 4) |
246 | return IS_IPADDR_V6(&(evp)->prefix.es_addr.ip); | |
3714a385 | 247 | if (evp->prefix.route_type == 5) |
248 | return IS_IPADDR_V6(&(evp)->prefix.prefix_addr.ip); | |
249 | return 0; | |
250 | } | |
251 | ||
b4b359a2 | 252 | /* Prefix for a generic pointer */ |
d62a17ae | 253 | struct prefix_ptr { |
d7c0a89a QY |
254 | uint8_t family; |
255 | uint8_t prefixlen; | |
d62a17ae | 256 | uintptr_t prefix __attribute__((aligned(8))); |
b4b359a2 PM |
257 | }; |
258 | ||
9a14899b PG |
259 | /* Prefix for a Flowspec entry */ |
260 | struct prefix_fs { | |
261 | uint8_t family; | |
262 | uint8_t prefixlen; /* unused */ | |
263 | struct flowspec_prefix prefix __attribute__((aligned(8))); | |
264 | }; | |
265 | ||
d62a17ae | 266 | struct prefix_sg { |
d7c0a89a QY |
267 | uint8_t family; |
268 | uint8_t prefixlen; | |
d62a17ae | 269 | struct in_addr src __attribute__((aligned(8))); |
270 | struct in_addr grp; | |
e9219290 DS |
271 | }; |
272 | ||
f7bf4153 DL |
273 | /* helper to get type safety/avoid casts on calls |
274 | * (w/o this, functions accepting all prefix types need casts on the caller | |
275 | * side, which strips type safety since the cast will accept any pointer | |
276 | * type.) | |
277 | */ | |
d62a17ae | 278 | union prefixptr { |
279 | struct prefix *p; | |
280 | struct prefix_ipv4 *p4; | |
281 | struct prefix_ipv6 *p6; | |
282 | struct prefix_evpn *evp; | |
9a14899b | 283 | const struct prefix_fs *fs; |
d62a17ae | 284 | } __attribute__((transparent_union)); |
285 | ||
286 | union prefixconstptr { | |
287 | const struct prefix *p; | |
288 | const struct prefix_ipv4 *p4; | |
289 | const struct prefix_ipv6 *p6; | |
290 | const struct prefix_evpn *evp; | |
9a14899b | 291 | const struct prefix_fs *fs; |
d62a17ae | 292 | } __attribute__((transparent_union)); |
f7bf4153 | 293 | |
718e3744 | 294 | #ifndef INET_ADDRSTRLEN |
295 | #define INET_ADDRSTRLEN 16 | |
296 | #endif /* INET_ADDRSTRLEN */ | |
297 | ||
298 | #ifndef INET6_ADDRSTRLEN | |
299 | #define INET6_ADDRSTRLEN 46 | |
300 | #endif /* INET6_ADDRSTRLEN */ | |
301 | ||
302 | #ifndef INET6_BUFSIZ | |
303 | #define INET6_BUFSIZ 51 | |
304 | #endif /* INET6_BUFSIZ */ | |
305 | ||
855110bb TT |
306 | /* Maximum prefix string length (IPv6) */ |
307 | #define PREFIX_STRLEN 51 | |
308 | ||
718e3744 | 309 | /* Max bit/byte length of IPv4 address. */ |
310 | #define IPV4_MAX_BYTELEN 4 | |
311 | #define IPV4_MAX_BITLEN 32 | |
312 | #define IPV4_MAX_PREFIXLEN 32 | |
313 | #define IPV4_ADDR_CMP(D,S) memcmp ((D), (S), IPV4_MAX_BYTELEN) | |
19aad877 JB |
314 | |
315 | static inline bool ipv4_addr_same(const struct in_addr *a, | |
316 | const struct in_addr *b) | |
317 | { | |
318 | return (a->s_addr == b->s_addr); | |
319 | } | |
320 | #define IPV4_ADDR_SAME(A,B) ipv4_addr_same((A), (B)) | |
321 | ||
322 | static inline void ipv4_addr_copy(struct in_addr *dst, | |
323 | const struct in_addr *src) | |
324 | { | |
325 | dst->s_addr = src->s_addr; | |
326 | } | |
327 | #define IPV4_ADDR_COPY(D,S) ipv4_addr_copy((D), (S)) | |
718e3744 | 328 | |
d7c0a89a QY |
329 | #define IPV4_NET0(a) ((((uint32_t)(a)) & 0xff000000) == 0x00000000) |
330 | #define IPV4_NET127(a) ((((uint32_t)(a)) & 0xff000000) == 0x7f000000) | |
331 | #define IPV4_LINKLOCAL(a) ((((uint32_t)(a)) & 0xffff0000) == 0xa9fe0000) | |
332 | #define IPV4_CLASS_DE(a) ((((uint32_t)(a)) & 0xe0000000) == 0xe0000000) | |
333 | #define IPV4_MC_LINKLOCAL(a) ((((uint32_t)(a)) & 0xffffff00) == 0xe0000000) | |
718e3744 | 334 | |
335 | /* Max bit/byte length of IPv6 address. */ | |
336 | #define IPV6_MAX_BYTELEN 16 | |
337 | #define IPV6_MAX_BITLEN 128 | |
338 | #define IPV6_MAX_PREFIXLEN 128 | |
339 | #define IPV6_ADDR_CMP(D,S) memcmp ((D), (S), IPV6_MAX_BYTELEN) | |
340 | #define IPV6_ADDR_SAME(D,S) (memcmp ((D), (S), IPV6_MAX_BYTELEN) == 0) | |
341 | #define IPV6_ADDR_COPY(D,S) memcpy ((D), (S), IPV6_MAX_BYTELEN) | |
342 | ||
343 | /* Count prefix size from mask length */ | |
344 | #define PSIZE(a) (((a) + 7) / (8)) | |
345 | ||
cd1964ff DS |
346 | #define BSIZE(a) ((a) * (8)) |
347 | ||
718e3744 | 348 | /* Prefix's family member. */ |
349 | #define PREFIX_FAMILY(p) ((p)->family) | |
350 | ||
5c6ed111 DL |
351 | /* glibc defines s6_addr32 to __in6_u.__u6_addr32 if __USE_{MISC || GNU} */ |
352 | #ifndef s6_addr32 | |
353 | #if defined(SUNOS_5) | |
354 | /* Some SunOS define s6_addr32 only to kernel */ | |
355 | #define s6_addr32 _S6_un._S6_u32 | |
356 | #else | |
357 | #define s6_addr32 __u6_addr.__u6_addr32 | |
358 | #endif /* SUNOS_5 */ | |
359 | #endif /*s6_addr32*/ | |
360 | ||
718e3744 | 361 | /* Prototypes. */ |
f3ccedaa | 362 | extern int str2family(const char *); |
d62a17ae | 363 | extern int afi2family(afi_t); |
364 | extern afi_t family2afi(int); | |
db2fde34 | 365 | extern const char *family2str(int family); |
1ec23d90 | 366 | extern const char *safi2str(safi_t safi); |
32ac65d9 | 367 | extern const char *afi2str(afi_t afi); |
8cc4198f | 368 | |
f63f06da | 369 | /* Check bit of the prefix. */ |
d7c0a89a | 370 | extern unsigned int prefix_bit(const uint8_t *prefix, const uint8_t prefixlen); |
d62a17ae | 371 | extern unsigned int prefix6_bit(const struct in6_addr *prefix, |
d7c0a89a | 372 | const uint8_t prefixlen); |
f63f06da | 373 | |
d62a17ae | 374 | extern struct prefix *prefix_new(void); |
375 | extern void prefix_free(struct prefix *); | |
376 | extern const char *prefix_family_str(const struct prefix *); | |
377 | extern int prefix_blen(const struct prefix *); | |
378 | extern int str2prefix(const char *, struct prefix *); | |
4690c7d7 | 379 | |
a9ea959f | 380 | #define PREFIX2STR_BUFFER PREFIX_STRLEN |
381 | ||
d62a17ae | 382 | extern const char *prefix2str(union prefixconstptr, char *, int); |
383 | extern int prefix_match(const struct prefix *, const struct prefix *); | |
384 | extern int prefix_match_network_statement(const struct prefix *, | |
385 | const struct prefix *); | |
386 | extern int prefix_same(const struct prefix *, const struct prefix *); | |
387 | extern int prefix_cmp(const struct prefix *, const struct prefix *); | |
388 | extern int prefix_common_bits(const struct prefix *, const struct prefix *); | |
389 | extern void prefix_copy(struct prefix *dest, const struct prefix *src); | |
390 | extern void apply_mask(struct prefix *); | |
391 | ||
392 | extern struct prefix *sockunion2prefix(const union sockunion *dest, | |
393 | const union sockunion *mask); | |
394 | extern struct prefix *sockunion2hostprefix(const union sockunion *, | |
395 | struct prefix *p); | |
396 | extern void prefix2sockunion(const struct prefix *, union sockunion *); | |
397 | ||
398 | extern int str2prefix_eth(const char *, struct prefix_eth *); | |
399 | ||
400 | extern struct prefix_ipv4 *prefix_ipv4_new(void); | |
401 | extern void prefix_ipv4_free(struct prefix_ipv4 *); | |
402 | extern int str2prefix_ipv4(const char *, struct prefix_ipv4 *); | |
403 | extern void apply_mask_ipv4(struct prefix_ipv4 *); | |
404 | ||
996c9314 | 405 | #define PREFIX_COPY(DST, SRC) \ |
72a1b201 | 406 | *((struct prefix *)(DST)) = *((const struct prefix *)(SRC)) |
996c9314 | 407 | #define PREFIX_COPY_IPV4(DST, SRC) \ |
e4529636 AS |
408 | *((struct prefix_ipv4 *)(DST)) = *((const struct prefix_ipv4 *)(SRC)); |
409 | ||
d62a17ae | 410 | extern int prefix_ipv4_any(const struct prefix_ipv4 *); |
411 | extern void apply_classful_mask_ipv4(struct prefix_ipv4 *); | |
8cc4198f | 412 | |
d7c0a89a | 413 | extern uint8_t ip_masklen(struct in_addr); |
d62a17ae | 414 | extern void masklen2ip(const int, struct in_addr *); |
3fb9cd6e | 415 | /* returns the network portion of the host address */ |
d62a17ae | 416 | extern in_addr_t ipv4_network_addr(in_addr_t hostaddr, int masklen); |
3fb9cd6e | 417 | /* given the address of a host on a network and the network mask length, |
418 | * calculate the broadcast address for that network; | |
419 | * special treatment for /31: returns the address of the other host | |
420 | * on the network by flipping the host bit */ | |
d62a17ae | 421 | extern in_addr_t ipv4_broadcast_addr(in_addr_t hostaddr, int masklen); |
3fb9cd6e | 422 | |
d62a17ae | 423 | extern int netmask_str2prefix_str(const char *, const char *, char *); |
718e3744 | 424 | |
d62a17ae | 425 | extern struct prefix_ipv6 *prefix_ipv6_new(void); |
426 | extern void prefix_ipv6_free(struct prefix_ipv6 *); | |
427 | extern int str2prefix_ipv6(const char *, struct prefix_ipv6 *); | |
428 | extern void apply_mask_ipv6(struct prefix_ipv6 *); | |
718e3744 | 429 | |
d62a17ae | 430 | #define PREFIX_COPY_IPV6(DST, SRC) \ |
e4529636 AS |
431 | *((struct prefix_ipv6 *)(DST)) = *((const struct prefix_ipv6 *)(SRC)); |
432 | ||
d62a17ae | 433 | extern int ip6_masklen(struct in6_addr); |
434 | extern void masklen2ip6(const int, struct in6_addr *); | |
b04c699e | 435 | |
d62a17ae | 436 | extern const char *inet6_ntoa(struct in6_addr); |
5920990f | 437 | |
523cafc4 | 438 | extern int is_zero_mac(struct ethaddr *mac); |
db42a173 PG |
439 | extern int prefix_str2mac(const char *str, struct ethaddr *mac); |
440 | extern char *prefix_mac2str(const struct ethaddr *mac, char *buf, int size); | |
c215ecaf | 441 | |
7a7761d2 CF |
442 | extern unsigned prefix_hash_key(void *pp); |
443 | ||
50f74cf1 | 444 | extern int str_to_esi(const char *str, esi_t *esi); |
445 | extern char *esi_to_str(const esi_t *esi, char *buf, int size); | |
446 | extern void prefix_hexdump(const struct prefix *p); | |
447 | extern void prefix_evpn_hexdump(const struct prefix_evpn *p); | |
448 | ||
d62a17ae | 449 | static inline int ipv6_martian(struct in6_addr *addr) |
d914d5ff | 450 | { |
d62a17ae | 451 | struct in6_addr localhost_addr; |
d914d5ff | 452 | |
d62a17ae | 453 | inet_pton(AF_INET6, "::1", &localhost_addr); |
d914d5ff | 454 | |
d62a17ae | 455 | if (IPV6_ADDR_SAME(&localhost_addr, addr)) |
456 | return 1; | |
d914d5ff | 457 | |
d62a17ae | 458 | return 0; |
d914d5ff DS |
459 | } |
460 | ||
d37ba549 | 461 | extern int macstr2prefix_evpn(const char *str, struct prefix_evpn *p); |
718e3744 | 462 | |
d914d5ff | 463 | /* NOTE: This routine expects the address argument in network byte order. */ |
d62a17ae | 464 | static inline int ipv4_martian(struct in_addr *addr) |
6ee06fa9 | 465 | { |
d62a17ae | 466 | in_addr_t ip = ntohl(addr->s_addr); |
6ee06fa9 | 467 | |
d62a17ae | 468 | if (IPV4_NET0(ip) || IPV4_NET127(ip) || IPV4_CLASS_DE(ip)) { |
469 | return 1; | |
470 | } | |
471 | return 0; | |
6ee06fa9 PM |
472 | } |
473 | ||
f229873a | 474 | static inline int is_default_prefix(const struct prefix *p) |
18ff3edd | 475 | { |
d62a17ae | 476 | if (!p) |
477 | return 0; | |
18ff3edd | 478 | |
996c9314 LB |
479 | if ((p->family == AF_INET) && (p->u.prefix4.s_addr == INADDR_ANY) |
480 | && (p->prefixlen == 0)) | |
f229873a DS |
481 | return 1; |
482 | ||
996c9314 LB |
483 | if ((p->family == AF_INET6) && (p->prefixlen == 0) |
484 | && (!memcmp(&p->u.prefix6, &in6addr_any, sizeof(struct in6_addr)))) | |
d62a17ae | 485 | return 1; |
18ff3edd | 486 | |
d62a17ae | 487 | return 0; |
18ff3edd DS |
488 | } |
489 | ||
408b00c4 MK |
490 | static inline int is_host_route(struct prefix *p) |
491 | { | |
492 | if (p->family == AF_INET) | |
493 | return (p->prefixlen == IPV4_MAX_BITLEN); | |
494 | else if (p->family == AF_INET6) | |
495 | return (p->prefixlen == IPV6_MAX_BITLEN); | |
496 | return 0; | |
497 | } | |
718e3744 | 498 | #endif /* _ZEBRA_PREFIX_H */ |