1: /*
2: * BIRD Internet Routing Daemon -- Network addresses
3: *
4: * (c) 2015 Ondrej Zajicek <santiago@crfreenet.org>
5: * (c) 2015 CZ.NIC z.s.p.o.
6: *
7: * Can be freely distributed and used under the terms of the GNU GPL.
8: */
9:
10: #ifndef _BIRD_NET_H_
11: #define _BIRD_NET_H_
12:
13: #include "lib/ip.h"
14:
15:
16: #define NET_IP4 1
17: #define NET_IP6 2
18: #define NET_VPN4 3
19: #define NET_VPN6 4
20: #define NET_ROA4 5
21: #define NET_ROA6 6
22: #define NET_FLOW4 7
23: #define NET_FLOW6 8
24: #define NET_IP6_SADR 9
25: #define NET_MPLS 10
26: #define NET_MAX 11
27:
28: #define NB_IP4 (1 << NET_IP4)
29: #define NB_IP6 (1 << NET_IP6)
30: #define NB_VPN4 (1 << NET_VPN4)
31: #define NB_VPN6 (1 << NET_VPN6)
32: #define NB_ROA4 (1 << NET_ROA4)
33: #define NB_ROA6 (1 << NET_ROA6)
34: #define NB_FLOW4 (1 << NET_FLOW4)
35: #define NB_FLOW6 (1 << NET_FLOW6)
36: #define NB_IP6_SADR (1 << NET_IP6_SADR)
37: #define NB_MPLS (1 << NET_MPLS)
38:
39: #define NB_IP (NB_IP4 | NB_IP6)
40: #define NB_VPN (NB_VPN4 | NB_VPN6)
41: #define NB_FLOW (NB_FLOW4 | NB_FLOW6)
42: #define NB_DEST (NB_IP | NB_IP6_SADR | NB_VPN | NB_MPLS)
43: #define NB_ANY 0xffffffff
44:
45:
46: typedef struct net_addr {
47: u8 type;
48: u8 pxlen;
49: u16 length;
50: u8 data[20];
51: u64 align[0];
52: } net_addr;
53:
54: typedef struct net_addr_ip4 {
55: u8 type;
56: u8 pxlen;
57: u16 length;
58: ip4_addr prefix;
59: } net_addr_ip4;
60:
61: typedef struct net_addr_ip6 {
62: u8 type;
63: u8 pxlen;
64: u16 length;
65: ip6_addr prefix;
66: } net_addr_ip6;
67:
68: typedef struct net_addr_vpn4 {
69: u8 type;
70: u8 pxlen;
71: u16 length;
72: ip4_addr prefix;
73: u64 rd;
74: } net_addr_vpn4;
75:
76: typedef struct net_addr_vpn6 {
77: u8 type;
78: u8 pxlen;
79: u16 length;
80: ip6_addr prefix;
81: u32 padding;
82: u64 rd;
83: } net_addr_vpn6;
84:
85: typedef struct net_addr_roa4 {
86: u8 type;
87: u8 pxlen;
88: u16 length;
89: ip4_addr prefix;
90: u32 max_pxlen;
91: u32 asn;
92: } net_addr_roa4;
93:
94: typedef struct net_addr_roa6 {
95: u8 type;
96: u8 pxlen;
97: u16 length;
98: ip6_addr prefix;
99: u32 max_pxlen;
100: u32 asn;
101: } net_addr_roa6;
102:
103: typedef struct net_addr_flow4 {
104: u8 type;
105: u8 pxlen;
106: u16 length;
107: ip4_addr prefix;
108: byte data[0];
109: } net_addr_flow4;
110:
111: typedef struct net_addr_flow6 {
112: u8 type;
113: u8 pxlen;
114: u16 length;
115: ip6_addr prefix;
116: byte data[0];
117: } net_addr_flow6;
118:
119: typedef struct net_addr_mpls {
120: u8 type;
121: u8 pxlen;
122: u16 length;
123: u32 label;
124: } net_addr_mpls;
125:
126: typedef struct net_addr_ip6_sadr {
127: u8 type;
128: u8 dst_pxlen;
129: u16 length;
130: ip6_addr dst_prefix;
131: s32 src_pxlen; /* s32 to avoid padding */
132: ip6_addr src_prefix;
133: } net_addr_ip6_sadr;
134:
135: typedef union net_addr_union {
136: net_addr n;
137: net_addr_ip4 ip4;
138: net_addr_ip6 ip6;
139: net_addr_vpn4 vpn4;
140: net_addr_vpn6 vpn6;
141: net_addr_roa4 roa4;
142: net_addr_roa6 roa6;
143: net_addr_flow4 flow4;
144: net_addr_flow6 flow6;
145: net_addr_ip6_sadr ip6_sadr;
146: net_addr_mpls mpls;
147: } net_addr_union;
148:
149:
150: extern const char * const net_label[];
151: extern const u16 net_addr_length[];
152: extern const u8 net_max_prefix_length[];
153: extern const u16 net_max_text_length[];
154:
155: #define NET_MAX_TEXT_LENGTH 256
156:
157:
158: #define NET_ADDR_IP4(prefix,pxlen) \
159: ((net_addr_ip4) { NET_IP4, pxlen, sizeof(net_addr_ip4), prefix })
160:
161: #define NET_ADDR_IP6(prefix,pxlen) \
162: ((net_addr_ip6) { NET_IP6, pxlen, sizeof(net_addr_ip6), prefix })
163:
164: #define NET_ADDR_VPN4(prefix,pxlen,rd) \
165: ((net_addr_vpn4) { NET_VPN4, pxlen, sizeof(net_addr_vpn4), prefix, rd })
166:
167: #define NET_ADDR_VPN6(prefix,pxlen,rd) \
168: ((net_addr_vpn6) { NET_VPN6, pxlen, sizeof(net_addr_vpn6), prefix, 0, rd })
169:
170: #define NET_ADDR_ROA4(prefix,pxlen,max_pxlen,asn) \
171: ((net_addr_roa4) { NET_ROA4, pxlen, sizeof(net_addr_roa4), prefix, max_pxlen, asn })
172:
173: #define NET_ADDR_ROA6(prefix,pxlen,max_pxlen,asn) \
174: ((net_addr_roa6) { NET_ROA6, pxlen, sizeof(net_addr_roa6), prefix, max_pxlen, asn })
175:
176: #define NET_ADDR_FLOW4(prefix,pxlen,dlen) \
177: ((net_addr_flow4) { NET_FLOW4, pxlen, sizeof(net_addr_ip4) + dlen, prefix })
178:
179: #define NET_ADDR_FLOW6(prefix,pxlen,dlen) \
180: ((net_addr_flow6) { NET_FLOW6, pxlen, sizeof(net_addr_ip6) + dlen, prefix })
181:
182: #define NET_ADDR_IP6_SADR(dst_prefix,dst_pxlen,src_prefix,src_pxlen) \
183: ((net_addr_ip6_sadr) { NET_IP6_SADR, dst_pxlen, sizeof(net_addr_ip6_sadr), dst_prefix, src_pxlen, src_prefix })
184:
185: #define NET_ADDR_MPLS(label) \
186: ((net_addr_mpls) { NET_MPLS, 20, sizeof(net_addr_mpls), label })
187:
188:
189: static inline void net_fill_ip4(net_addr *a, ip4_addr prefix, uint pxlen)
190: { *(net_addr_ip4 *)a = NET_ADDR_IP4(prefix, pxlen); }
191:
192: static inline void net_fill_ip6(net_addr *a, ip6_addr prefix, uint pxlen)
193: { *(net_addr_ip6 *)a = NET_ADDR_IP6(prefix, pxlen); }
194:
195: static inline void net_fill_vpn4(net_addr *a, ip4_addr prefix, uint pxlen, u64 rd)
196: { *(net_addr_vpn4 *)a = NET_ADDR_VPN4(prefix, pxlen, rd); }
197:
198: static inline void net_fill_vpn6(net_addr *a, ip6_addr prefix, uint pxlen, u64 rd)
199: { *(net_addr_vpn6 *)a = NET_ADDR_VPN6(prefix, pxlen, rd); }
200:
201: static inline void net_fill_roa4(net_addr *a, ip4_addr prefix, uint pxlen, uint max_pxlen, u32 asn)
202: { *(net_addr_roa4 *)a = NET_ADDR_ROA4(prefix, pxlen, max_pxlen, asn); }
203:
204: static inline void net_fill_roa6(net_addr *a, ip6_addr prefix, uint pxlen, uint max_pxlen, u32 asn)
205: { *(net_addr_roa6 *)a = NET_ADDR_ROA6(prefix, pxlen, max_pxlen, asn); }
206:
207: static inline void net_fill_ip6_sadr(net_addr *a, ip6_addr dst_prefix, uint dst_pxlen, ip6_addr src_prefix, uint src_pxlen)
208: { *(net_addr_ip6_sadr *)a = NET_ADDR_IP6_SADR(dst_prefix, dst_pxlen, src_prefix, src_pxlen); }
209:
210: static inline void net_fill_mpls(net_addr *a, u32 label)
211: { *(net_addr_mpls *)a = NET_ADDR_MPLS(label); }
212:
213: static inline void net_fill_ipa(net_addr *a, ip_addr prefix, uint pxlen)
214: {
215: if (ipa_is_ip4(prefix))
216: net_fill_ip4(a, ipa_to_ip4(prefix), pxlen);
217: else
218: net_fill_ip6(a, ipa_to_ip6(prefix), pxlen);
219: }
220:
221: static inline void net_fill_ip_host(net_addr *a, ip_addr prefix)
222: {
223: if (ipa_is_ip4(prefix))
224: net_fill_ip4(a, ipa_to_ip4(prefix), IP4_MAX_PREFIX_LENGTH);
225: else
226: net_fill_ip6(a, ipa_to_ip6(prefix), IP6_MAX_PREFIX_LENGTH);
227: }
228:
229: static inline void net_fill_flow4(net_addr *a, ip4_addr prefix, uint pxlen, byte *data, uint dlen)
230: {
231: net_addr_flow4 *f = (void *) a;
232: *f = NET_ADDR_FLOW4(prefix, pxlen, dlen);
233: memcpy(f->data, data, dlen);
234: }
235:
236: static inline void net_fill_flow6(net_addr *a, ip6_addr prefix, uint pxlen, byte *data, uint dlen)
237: {
238: net_addr_flow6 *f = (void *) a;
239: *f = NET_ADDR_FLOW6(prefix, pxlen, dlen);
240: memcpy(f->data, data, dlen);
241: }
242:
243: /* Make NET_IP6_SADR from NET_IP6, assuming there is enough space */
244: static inline void net_make_ip6_sadr(net_addr *a)
245: {
246: net_addr_ip6_sadr *n = (void *) a;
247: n->type = NET_IP6_SADR;
248: n->length = sizeof(net_addr_ip6_sadr);
249: n->src_pxlen = 0;
250: n->src_prefix = IP6_NONE;
251: }
252:
253: static inline int net_val_match(u8 type, u32 mask)
254: { return !!((1 << type) & mask); }
255:
256: static inline int net_type_match(const net_addr *a, u32 mask)
257: { return net_val_match(a->type, mask); }
258:
259: static inline int net_is_ip(const net_addr *a)
260: { return (a->type == NET_IP4) || (a->type == NET_IP6); }
261:
262: static inline int net_is_vpn(const net_addr *a)
263: { return (a->type == NET_VPN4) || (a->type == NET_VPN6); }
264:
265: static inline int net_is_roa(const net_addr *a)
266: { return (a->type == NET_ROA4) || (a->type == NET_ROA6); }
267:
268: static inline int net_is_flow(const net_addr *a)
269: { return (a->type == NET_FLOW4) || (a->type == NET_FLOW6); }
270:
271: static inline int net_is_sadr(const net_addr *a)
272: { return (a->type == NET_IP6_SADR); }
273:
274: static inline ip4_addr net4_prefix(const net_addr *a)
275: { return ((net_addr_ip4 *) a)->prefix; }
276:
277: static inline ip6_addr net6_prefix(const net_addr *a)
278: { return ((net_addr_ip6 *) a)->prefix; }
279:
280: static inline ip_addr net_prefix(const net_addr *a)
281: {
282: switch (a->type)
283: {
284: case NET_IP4:
285: case NET_VPN4:
286: case NET_ROA4:
287: case NET_FLOW4:
288: return ipa_from_ip4(net4_prefix(a));
289:
290: case NET_IP6:
291: case NET_VPN6:
292: case NET_ROA6:
293: case NET_FLOW6:
294: case NET_IP6_SADR:
295: return ipa_from_ip6(net6_prefix(a));
296:
297: case NET_MPLS:
298: default:
299: return IPA_NONE;
300: }
301: }
302:
303: static inline u32 net_mpls(const net_addr *a)
304: {
305: if (a->type == NET_MPLS)
306: return ((net_addr_mpls *) a)->label;
307:
308: bug("Can't call net_mpls on non-mpls net_addr");
309: }
310:
311: static inline uint net4_pxlen(const net_addr *a)
312: { return a->pxlen; }
313:
314: static inline uint net6_pxlen(const net_addr *a)
315: { return a->pxlen; }
316:
317: static inline uint net_pxlen(const net_addr *a)
318: { return a->pxlen; }
319:
320: ip_addr net_pxmask(const net_addr *a);
321:
322: static inline u64 net_rd(const net_addr *a)
323: {
324: switch (a->type)
325: {
326: case NET_VPN4:
327: return ((net_addr_vpn4 *)a)->rd;
328: case NET_VPN6:
329: return ((net_addr_vpn6 *)a)->rd;
330: }
331: return 0;
332: }
333:
334:
335: static inline int net_equal(const net_addr *a, const net_addr *b)
336: { return (a->length == b->length) && !memcmp(a, b, a->length); }
337:
338: static inline int net_equal_ip4(const net_addr_ip4 *a, const net_addr_ip4 *b)
339: { return !memcmp(a, b, sizeof(net_addr_ip4)); }
340:
341: static inline int net_equal_ip6(const net_addr_ip6 *a, const net_addr_ip6 *b)
342: { return !memcmp(a, b, sizeof(net_addr_ip6)); }
343:
344: static inline int net_equal_vpn4(const net_addr_vpn4 *a, const net_addr_vpn4 *b)
345: { return !memcmp(a, b, sizeof(net_addr_vpn4)); }
346:
347: static inline int net_equal_vpn6(const net_addr_vpn6 *a, const net_addr_vpn6 *b)
348: { return !memcmp(a, b, sizeof(net_addr_vpn6)); }
349:
350: static inline int net_equal_roa4(const net_addr_roa4 *a, const net_addr_roa4 *b)
351: { return !memcmp(a, b, sizeof(net_addr_roa4)); }
352:
353: static inline int net_equal_roa6(const net_addr_roa6 *a, const net_addr_roa6 *b)
354: { return !memcmp(a, b, sizeof(net_addr_roa6)); }
355:
356: static inline int net_equal_flow4(const net_addr_flow4 *a, const net_addr_flow4 *b)
357: { return net_equal((const net_addr *) a, (const net_addr *) b); }
358:
359: static inline int net_equal_flow6(const net_addr_flow6 *a, const net_addr_flow6 *b)
360: { return net_equal((const net_addr *) a, (const net_addr *) b); }
361:
362: static inline int net_equal_ip6_sadr(const net_addr_ip6_sadr *a, const net_addr_ip6_sadr *b)
363: { return !memcmp(a, b, sizeof(net_addr_ip6_sadr)); }
364:
365: static inline int net_equal_mpls(const net_addr_mpls *a, const net_addr_mpls *b)
366: { return !memcmp(a, b, sizeof(net_addr_mpls)); }
367:
368:
369: static inline int net_equal_prefix_roa4(const net_addr_roa4 *a, const net_addr_roa4 *b)
370: { return ip4_equal(a->prefix, b->prefix) && (a->pxlen == b->pxlen); }
371:
372: static inline int net_equal_prefix_roa6(const net_addr_roa6 *a, const net_addr_roa6 *b)
373: { return ip6_equal(a->prefix, b->prefix) && (a->pxlen == b->pxlen); }
374:
375: static inline int net_equal_dst_ip6_sadr(const net_addr_ip6_sadr *a, const net_addr_ip6_sadr *b)
376: { return ip6_equal(a->dst_prefix, b->dst_prefix) && (a->dst_pxlen == b->dst_pxlen); }
377:
378: static inline int net_equal_src_ip6_sadr(const net_addr_ip6_sadr *a, const net_addr_ip6_sadr *b)
379: { return ip6_equal(a->src_prefix, b->src_prefix) && (a->src_pxlen == b->src_pxlen); }
380:
381:
382: static inline int net_zero_ip4(const net_addr_ip4 *a)
383: { return !a->pxlen && ip4_zero(a->prefix); }
384:
385: static inline int net_zero_ip6(const net_addr_ip6 *a)
386: { return !a->pxlen && ip6_zero(a->prefix); }
387:
388: static inline int net_zero_vpn4(const net_addr_vpn4 *a)
389: { return !a->pxlen && ip4_zero(a->prefix) && !a->rd; }
390:
391: static inline int net_zero_vpn6(const net_addr_vpn6 *a)
392: { return !a->pxlen && ip6_zero(a->prefix) && !a->rd; }
393:
394: static inline int net_zero_roa4(const net_addr_roa4 *a)
395: { return !a->pxlen && ip4_zero(a->prefix) && !a->max_pxlen && !a->asn; }
396:
397: static inline int net_zero_roa6(const net_addr_roa6 *a)
398: { return !a->pxlen && ip6_zero(a->prefix) && !a->max_pxlen && !a->asn; }
399:
400: static inline int net_zero_flow4(const net_addr_flow4 *a)
401: { return !a->pxlen && ip4_zero(a->prefix) && (a->length == sizeof(net_addr_flow4)); }
402:
403: static inline int net_zero_flow6(const net_addr_flow6 *a)
404: { return !a->pxlen && ip6_zero(a->prefix) && (a->length == sizeof(net_addr_flow6)); }
405:
406: static inline int net_zero_mpls(const net_addr_mpls *a)
407: { return !a->label; }
408:
409:
410: static inline int net_compare_ip4(const net_addr_ip4 *a, const net_addr_ip4 *b)
411: { return ip4_compare(a->prefix, b->prefix) ?: uint_cmp(a->pxlen, b->pxlen); }
412:
413: static inline int net_compare_ip6(const net_addr_ip6 *a, const net_addr_ip6 *b)
414: { return ip6_compare(a->prefix, b->prefix) ?: uint_cmp(a->pxlen, b->pxlen); }
415:
416: static inline int net_compare_vpn4(const net_addr_vpn4 *a, const net_addr_vpn4 *b)
417: { return u64_cmp(a->rd, b->rd) ?: ip4_compare(a->prefix, b->prefix) ?: uint_cmp(a->pxlen, b->pxlen); }
418:
419: static inline int net_compare_vpn6(const net_addr_vpn6 *a, const net_addr_vpn6 *b)
420: { return u64_cmp(a->rd, b->rd) ?: ip6_compare(a->prefix, b->prefix) ?: uint_cmp(a->pxlen, b->pxlen); }
421:
422: static inline int net_compare_roa4(const net_addr_roa4 *a, const net_addr_roa4 *b)
423: { return ip4_compare(a->prefix, b->prefix) ?: uint_cmp(a->pxlen, b->pxlen) ?: uint_cmp(a->max_pxlen, b->max_pxlen) ?: uint_cmp(a->asn, b->asn); }
424:
425: static inline int net_compare_roa6(const net_addr_roa6 *a, const net_addr_roa6 *b)
426: { return ip6_compare(a->prefix, b->prefix) ?: uint_cmp(a->pxlen, b->pxlen) ?: uint_cmp(a->max_pxlen, b->max_pxlen) ?: uint_cmp(a->asn, b->asn); }
427:
428: static inline int net_compare_flow4(const net_addr_flow4 *a, const net_addr_flow4 *b)
429: { return ip4_compare(a->prefix, b->prefix) ?: uint_cmp(a->pxlen, b->pxlen) ?: uint_cmp(a->length, b->length) ?: memcmp(a->data, b->data, a->length - sizeof(net_addr_flow4)); }
430:
431: static inline int net_compare_flow6(const net_addr_flow6 *a, const net_addr_flow6 *b)
432: { return ip6_compare(a->prefix, b->prefix) ?: uint_cmp(a->pxlen, b->pxlen) ?: uint_cmp(a->length, b->length) ?: memcmp(a->data, b->data, a->length - sizeof(net_addr_flow6)); }
433:
434: static inline int net_compare_ip6_sadr(const net_addr_ip6_sadr *a, const net_addr_ip6_sadr *b)
435: {
436: return
437: ip6_compare(a->dst_prefix, b->dst_prefix) ?: uint_cmp(a->dst_pxlen, b->dst_pxlen) ?:
438: ip6_compare(a->src_prefix, b->src_prefix) ?: uint_cmp(a->src_pxlen, b->src_pxlen);
439: }
440:
441: static inline int net_compare_mpls(const net_addr_mpls *a, const net_addr_mpls *b)
442: { return uint_cmp(a->label, b->label); }
443:
444: int net_compare(const net_addr *a, const net_addr *b);
445:
446:
447: static inline void net_copy(net_addr *dst, const net_addr *src)
448: { memcpy(dst, src, src->length); }
449:
450: static inline void net_copy_ip4(net_addr_ip4 *dst, const net_addr_ip4 *src)
451: { memcpy(dst, src, sizeof(net_addr_ip4)); }
452:
453: static inline void net_copy_ip6(net_addr_ip6 *dst, const net_addr_ip6 *src)
454: { memcpy(dst, src, sizeof(net_addr_ip6)); }
455:
456: static inline void net_copy_vpn4(net_addr_vpn4 *dst, const net_addr_vpn4 *src)
457: { memcpy(dst, src, sizeof(net_addr_vpn4)); }
458:
459: static inline void net_copy_vpn6(net_addr_vpn6 *dst, const net_addr_vpn6 *src)
460: { memcpy(dst, src, sizeof(net_addr_vpn6)); }
461:
462: static inline void net_copy_roa4(net_addr_roa4 *dst, const net_addr_roa4 *src)
463: { memcpy(dst, src, sizeof(net_addr_roa4)); }
464:
465: static inline void net_copy_roa6(net_addr_roa6 *dst, const net_addr_roa6 *src)
466: { memcpy(dst, src, sizeof(net_addr_roa6)); }
467:
468: static inline void net_copy_flow4(net_addr_flow4 *dst, const net_addr_flow4 *src)
469: { memcpy(dst, src, src->length); }
470:
471: static inline void net_copy_flow6(net_addr_flow6 *dst, const net_addr_flow6 *src)
472: { memcpy(dst, src, src->length); }
473:
474: static inline void net_copy_ip6_sadr(net_addr_ip6_sadr *dst, const net_addr_ip6_sadr *src)
475: { memcpy(dst, src, sizeof(net_addr_ip6_sadr)); }
476:
477: static inline void net_copy_mpls(net_addr_mpls *dst, const net_addr_mpls *src)
478: { memcpy(dst, src, sizeof(net_addr_mpls)); }
479:
480:
481: /* XXXX */
482: static inline u32 u64_hash(u64 a)
483: { return u32_hash(a); }
484:
485: static inline u32 net_hash_ip4(const net_addr_ip4 *n)
486: { return ip4_hash(n->prefix) ^ ((u32) n->pxlen << 26); }
487:
488: static inline u32 net_hash_ip6(const net_addr_ip6 *n)
489: { return ip6_hash(n->prefix) ^ ((u32) n->pxlen << 26); }
490:
491: static inline u32 net_hash_vpn4(const net_addr_vpn4 *n)
492: { return ip4_hash(n->prefix) ^ ((u32) n->pxlen << 26) ^ u64_hash(n->rd); }
493:
494: static inline u32 net_hash_vpn6(const net_addr_vpn6 *n)
495: { return ip6_hash(n->prefix) ^ ((u32) n->pxlen << 26) ^ u64_hash(n->rd); }
496:
497: static inline u32 net_hash_roa4(const net_addr_roa4 *n)
498: { return ip4_hash(n->prefix) ^ ((u32) n->pxlen << 26); }
499:
500: static inline u32 net_hash_roa6(const net_addr_roa6 *n)
501: { return ip6_hash(n->prefix) ^ ((u32) n->pxlen << 26); }
502:
503: static inline u32 net_hash_flow4(const net_addr_flow4 *n)
504: { return ip4_hash(n->prefix) ^ ((u32) n->pxlen << 26); }
505:
506: static inline u32 net_hash_flow6(const net_addr_flow6 *n)
507: { return ip6_hash(n->prefix) ^ ((u32) n->pxlen << 26); }
508:
509: static inline u32 net_hash_ip6_sadr(const net_addr_ip6_sadr *n)
510: { return net_hash_ip6((net_addr_ip6 *) n); }
511:
512: static inline u32 net_hash_mpls(const net_addr_mpls *n)
513: { return n->label; }
514:
515: u32 net_hash(const net_addr *a);
516:
517:
518: static inline int net_validate_px4(const ip4_addr prefix, uint pxlen)
519: {
520: return (pxlen <= IP4_MAX_PREFIX_LENGTH) &&
521: ip4_zero(ip4_and(prefix, ip4_not(ip4_mkmask(pxlen))));
522: }
523:
524: static inline int net_validate_px6(const ip6_addr prefix, uint pxlen)
525: {
526: return (pxlen <= IP6_MAX_PREFIX_LENGTH) &&
527: ip6_zero(ip6_and(prefix, ip6_not(ip6_mkmask(pxlen))));
528: }
529:
530: static inline int net_validate_ip4(const net_addr_ip4 *n)
531: { return net_validate_px4(n->prefix, n->pxlen); }
532:
533: static inline int net_validate_ip6(const net_addr_ip6 *n)
534: { return net_validate_px6(n->prefix, n->pxlen); }
535:
536: static inline int net_validate_vpn4(const net_addr_vpn4 *n)
537: { return net_validate_px4(n->prefix, n->pxlen); }
538:
539: static inline int net_validate_vpn6(const net_addr_vpn6 *n)
540: { return net_validate_px6(n->prefix, n->pxlen); }
541:
542: static inline int net_validate_roa4(const net_addr_roa4 *n)
543: {
544: return net_validate_px4(n->prefix, n->pxlen) &&
545: (n->pxlen <= n->max_pxlen) && (n->max_pxlen <= IP4_MAX_PREFIX_LENGTH);
546: }
547:
548: static inline int net_validate_roa6(const net_addr_roa6 *n)
549: {
550: return net_validate_px6(n->prefix, n->pxlen) &&
551: (n->pxlen <= n->max_pxlen) && (n->max_pxlen <= IP6_MAX_PREFIX_LENGTH);
552: }
553:
554: // FIXME: Better check, call flow_validate?
555: static inline int net_validate_flow4(const net_addr_flow4 *n)
556: { return net_validate_px4(n->prefix, n->pxlen); }
557:
558: static inline int net_validate_flow6(const net_addr_flow6 *n)
559: { return net_validate_px6(n->prefix, n->pxlen); }
560:
561: static inline int net_validate_mpls(const net_addr_mpls *n)
562: { return n->label < (1 << 20); }
563:
564: static inline int net_validate_ip6_sadr(const net_addr_ip6_sadr *n)
565: { return net_validate_px6(n->dst_prefix, n->dst_pxlen) && net_validate_px6(n->src_prefix, n->src_pxlen); }
566:
567: int net_validate(const net_addr *N);
568:
569:
570: static inline void net_normalize_ip4(net_addr_ip4 *n)
571: { n->prefix = ip4_and(n->prefix, ip4_mkmask(n->pxlen)); }
572:
573: static inline void net_normalize_ip6(net_addr_ip6 *n)
574: { n->prefix = ip6_and(n->prefix, ip6_mkmask(n->pxlen)); }
575:
576: static inline void net_normalize_vpn4(net_addr_vpn4 *n)
577: { net_normalize_ip4((net_addr_ip4 *) n); }
578:
579: static inline void net_normalize_vpn6(net_addr_vpn6 *n)
580: { net_normalize_ip6((net_addr_ip6 *) n); }
581:
582: static inline void net_normalize_ip6_sadr(net_addr_ip6_sadr *n)
583: {
584: n->dst_prefix = ip6_and(n->dst_prefix, ip6_mkmask(n->dst_pxlen));
585: n->src_prefix = ip6_and(n->src_prefix, ip6_mkmask(n->src_pxlen));
586: }
587:
588: void net_normalize(net_addr *N);
589:
590:
591: int net_classify(const net_addr *N);
592: int net_format(const net_addr *N, char *buf, int buflen);
593: int rd_format(const u64 rd, char *buf, int buflen);
594:
595: static inline int ipa_in_px4(ip4_addr a, ip4_addr prefix, uint pxlen)
596: { return ip4_zero(ip4_and(ip4_xor(a, prefix), ip4_mkmask(pxlen))); }
597:
598: static inline int ipa_in_px6(ip6_addr a, ip6_addr prefix, uint pxlen)
599: { return ip6_zero(ip6_and(ip6_xor(a, prefix), ip6_mkmask(pxlen))); }
600:
601: static inline int ipa_in_net_ip4(ip4_addr a, const net_addr_ip4 *n)
602: { return ipa_in_px4(a, n->prefix, n->pxlen); }
603:
604: static inline int ipa_in_net_ip6(ip6_addr a, const net_addr_ip6 *n)
605: { return ipa_in_px6(a, n->prefix, n->pxlen); }
606:
607: static inline int net_in_net_ip4(const net_addr_ip4 *a, const net_addr_ip4 *b)
608: { return (a->pxlen >= b->pxlen) && ipa_in_px4(a->prefix, b->prefix, b->pxlen); }
609:
610: static inline int net_in_net_ip6(const net_addr_ip6 *a, const net_addr_ip6 *b)
611: { return (a->pxlen >= b->pxlen) && ipa_in_px6(a->prefix, b->prefix, b->pxlen); }
612:
613: static inline int net_in_net_dst_ip6_sadr(const net_addr_ip6_sadr *a, const net_addr_ip6_sadr *b)
614: { return (a->dst_pxlen >= b->dst_pxlen) && ipa_in_px6(a->dst_prefix, b->dst_prefix, b->dst_pxlen); }
615:
616: static inline int net_in_net_src_ip6_sadr(const net_addr_ip6_sadr *a, const net_addr_ip6_sadr *b)
617: { return (a->src_pxlen >= b->src_pxlen) && ipa_in_px6(a->src_prefix, b->src_prefix, b->src_pxlen); }
618:
619: int ipa_in_netX(const ip_addr A, const net_addr *N);
620: int net_in_netX(const net_addr *A, const net_addr *N);
621:
622: void net_init(void);
623:
624: #endif
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