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lib: prefix support for flowspec
[mirror_frr.git] / lib / prefix.c
CommitLineData
718e3744 1/*
2 * Prefix related functions.
3 * Copyright (C) 1997, 98, 99 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#include <zebra.h>
23
24#include "prefix.h"
25#include "vty.h"
26#include "sockunion.h"
27#include "memory.h"
28#include "log.h"
7a7761d2 29#include "jhash.h"
6b0655a2 30
4a1ab8e4
DL		 31DEFINE_MTYPE_STATIC(LIB, PREFIX, "Prefix")
32
718e3744 33/* Maskbit. */
d7c0a89a
QY		 34static const uint8_t maskbit[] = {0x00, 0x80, 0xc0, 0xe0, 0xf0,
35 0xf8, 0xfc, 0xfe, 0xff};
d62a17ae 36
37static const struct in6_addr maskbytes6[] = {
38 /* /0 */ {{{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
39 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}}},
996c9314
LB		 40 /* /1 */
41 {{{0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
42 0x00, 0x00, 0x00, 0x00, 0x00}}},
43 /* /2 */
44 {{{0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
45 0x00, 0x00, 0x00, 0x00, 0x00}}},
46 /* /3 */
47 {{{0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
48 0x00, 0x00, 0x00, 0x00, 0x00}}},
49 /* /4 */
50 {{{0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
51 0x00, 0x00, 0x00, 0x00, 0x00}}},
52 /* /5 */
53 {{{0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
54 0x00, 0x00, 0x00, 0x00, 0x00}}},
55 /* /6 */
56 {{{0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
57 0x00, 0x00, 0x00, 0x00, 0x00}}},
58 /* /7 */
59 {{{0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
60 0x00, 0x00, 0x00, 0x00, 0x00}}},
61 /* /8 */
62 {{{0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
63 0x00, 0x00, 0x00, 0x00, 0x00}}},
64 /* /9 */
65 {{{0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
66 0x00, 0x00, 0x00, 0x00, 0x00}}},
67 /* /10 */
68 {{{0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
69 0x00, 0x00, 0x00, 0x00, 0x00}}},
70 /* /11 */
71 {{{0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
72 0x00, 0x00, 0x00, 0x00, 0x00}}},
73 /* /12 */
74 {{{0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
75 0x00, 0x00, 0x00, 0x00, 0x00}}},
76 /* /13 */
77 {{{0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
78 0x00, 0x00, 0x00, 0x00, 0x00}}},
79 /* /14 */
80 {{{0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
81 0x00, 0x00, 0x00, 0x00, 0x00}}},
82 /* /15 */
83 {{{0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
84 0x00, 0x00, 0x00, 0x00, 0x00}}},
85 /* /16 */
86 {{{0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
87 0x00, 0x00, 0x00, 0x00, 0x00}}},
88 /* /17 */
89 {{{0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
90 0x00, 0x00, 0x00, 0x00, 0x00}}},
91 /* /18 */
92 {{{0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
93 0x00, 0x00, 0x00, 0x00, 0x00}}},
94 /* /19 */
95 {{{0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
96 0x00, 0x00, 0x00, 0x00, 0x00}}},
97 /* /20 */
98 {{{0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
99 0x00, 0x00, 0x00, 0x00, 0x00}}},
100 /* /21 */
101 {{{0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
102 0x00, 0x00, 0x00, 0x00, 0x00}}},
103 /* /22 */
104 {{{0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
105 0x00, 0x00, 0x00, 0x00, 0x00}}},
106 /* /23 */
107 {{{0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
108 0x00, 0x00, 0x00, 0x00, 0x00}}},
109 /* /24 */
110 {{{0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
111 0x00, 0x00, 0x00, 0x00, 0x00}}},
112 /* /25 */
113 {{{0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
114 0x00, 0x00, 0x00, 0x00, 0x00}}},
115 /* /26 */
116 {{{0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
117 0x00, 0x00, 0x00, 0x00, 0x00}}},
118 /* /27 */
119 {{{0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
120 0x00, 0x00, 0x00, 0x00, 0x00}}},
121 /* /28 */
122 {{{0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
123 0x00, 0x00, 0x00, 0x00, 0x00}}},
124 /* /29 */
125 {{{0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
126 0x00, 0x00, 0x00, 0x00, 0x00}}},
127 /* /30 */
128 {{{0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
129 0x00, 0x00, 0x00, 0x00, 0x00}}},
130 /* /31 */
131 {{{0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
132 0x00, 0x00, 0x00, 0x00, 0x00}}},
133 /* /32 */
134 {{{0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
135 0x00, 0x00, 0x00, 0x00, 0x00}}},
136 /* /33 */
137 {{{0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
138 0x00, 0x00, 0x00, 0x00, 0x00}}},
139 /* /34 */
140 {{{0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
141 0x00, 0x00, 0x00, 0x00, 0x00}}},
142 /* /35 */
143 {{{0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
144 0x00, 0x00, 0x00, 0x00, 0x00}}},
145 /* /36 */
146 {{{0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
147 0x00, 0x00, 0x00, 0x00, 0x00}}},
148 /* /37 */
149 {{{0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
150 0x00, 0x00, 0x00, 0x00, 0x00}}},
151 /* /38 */
152 {{{0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
153 0x00, 0x00, 0x00, 0x00, 0x00}}},
154 /* /39 */
155 {{{0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
156 0x00, 0x00, 0x00, 0x00, 0x00}}},
157 /* /40 */
158 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
159 0x00, 0x00, 0x00, 0x00, 0x00}}},
160 /* /41 */
161 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00,
162 0x00, 0x00, 0x00, 0x00, 0x00}}},
163 /* /42 */
164 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00,
165 0x00, 0x00, 0x00, 0x00, 0x00}}},
166 /* /43 */
167 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00,
168 0x00, 0x00, 0x00, 0x00, 0x00}}},
169 /* /44 */
170 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00,
171 0x00, 0x00, 0x00, 0x00, 0x00}}},
172 /* /45 */
173 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00,
174 0x00, 0x00, 0x00, 0x00, 0x00}}},
175 /* /46 */
176 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00,
177 0x00, 0x00, 0x00, 0x00, 0x00}}},
178 /* /47 */
179 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00,
180 0x00, 0x00, 0x00, 0x00, 0x00}}},
181 /* /48 */
182 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00,
183 0x00, 0x00, 0x00, 0x00, 0x00}}},
184 /* /49 */
185 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00,
186 0x00, 0x00, 0x00, 0x00, 0x00}}},
187 /* /50 */
188 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00,
189 0x00, 0x00, 0x00, 0x00, 0x00}}},
190 /* /51 */
191 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00,
192 0x00, 0x00, 0x00, 0x00, 0x00}}},
193 /* /52 */
194 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00,
195 0x00, 0x00, 0x00, 0x00, 0x00}}},
196 /* /53 */
197 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00,
198 0x00, 0x00, 0x00, 0x00, 0x00}}},
199 /* /54 */
200 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00,
201 0x00, 0x00, 0x00, 0x00, 0x00}}},
202 /* /55 */
203 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00,
204 0x00, 0x00, 0x00, 0x00, 0x00}}},
205 /* /56 */
206 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,
207 0x00, 0x00, 0x00, 0x00, 0x00}}},
208 /* /57 */
209 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00,
210 0x00, 0x00, 0x00, 0x00, 0x00}}},
211 /* /58 */
212 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00,
213 0x00, 0x00, 0x00, 0x00, 0x00}}},
214 /* /59 */
215 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00,
216 0x00, 0x00, 0x00, 0x00, 0x00}}},
217 /* /60 */
218 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00,
219 0x00, 0x00, 0x00, 0x00, 0x00}}},
220 /* /61 */
221 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00,
222 0x00, 0x00, 0x00, 0x00, 0x00}}},
223 /* /62 */
224 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00,
225 0x00, 0x00, 0x00, 0x00, 0x00}}},
226 /* /63 */
227 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00,
228 0x00, 0x00, 0x00, 0x00, 0x00}}},
229 /* /64 */
230 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00,
231 0x00, 0x00, 0x00, 0x00, 0x00}}},
232 /* /65 */
233 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00,
234 0x00, 0x00, 0x00, 0x00, 0x00}}},
235 /* /66 */
236 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00,
237 0x00, 0x00, 0x00, 0x00, 0x00}}},
238 /* /67 */
239 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00,
240 0x00, 0x00, 0x00, 0x00, 0x00}}},
241 /* /68 */
242 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00,
243 0x00, 0x00, 0x00, 0x00, 0x00}}},
244 /* /69 */
245 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00,
246 0x00, 0x00, 0x00, 0x00, 0x00}}},
247 /* /70 */
248 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00,
249 0x00, 0x00, 0x00, 0x00, 0x00}}},
250 /* /71 */
251 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00,
252 0x00, 0x00, 0x00, 0x00, 0x00}}},
253 /* /72 */
254 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00,
255 0x00, 0x00, 0x00, 0x00, 0x00}}},
256 /* /73 */
257 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00,
258 0x00, 0x00, 0x00, 0x00, 0x00}}},
259 /* /74 */
260 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00,
261 0x00, 0x00, 0x00, 0x00, 0x00}}},
262 /* /75 */
263 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00,
264 0x00, 0x00, 0x00, 0x00, 0x00}}},
265 /* /76 */
266 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00,
267 0x00, 0x00, 0x00, 0x00, 0x00}}},
268 /* /77 */
269 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00,
270 0x00, 0x00, 0x00, 0x00, 0x00}}},
271 /* /78 */
272 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00,
273 0x00, 0x00, 0x00, 0x00, 0x00}}},
274 /* /79 */
275 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00,
276 0x00, 0x00, 0x00, 0x00, 0x00}}},
277 /* /80 */
278 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00,
279 0x00, 0x00, 0x00, 0x00, 0x00}}},
280 /* /81 */
281 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80,
282 0x00, 0x00, 0x00, 0x00, 0x00}}},
283 /* /82 */
284 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0,
285 0x00, 0x00, 0x00, 0x00, 0x00}}},
286 /* /83 */
287 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0,
288 0x00, 0x00, 0x00, 0x00, 0x00}}},
289 /* /84 */
290 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0,
291 0x00, 0x00, 0x00, 0x00, 0x00}}},
292 /* /85 */
293 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8,
294 0x00, 0x00, 0x00, 0x00, 0x00}}},
295 /* /86 */
296 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc,
297 0x00, 0x00, 0x00, 0x00, 0x00}}},
298 /* /87 */
299 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe,
300 0x00, 0x00, 0x00, 0x00, 0x00}}},
301 /* /88 */
302 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
303 0x00, 0x00, 0x00, 0x00, 0x00}}},
304 /* /89 */
305 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
306 0x80, 0x00, 0x00, 0x00, 0x00}}},
307 /* /90 */
308 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
309 0xc0, 0x00, 0x00, 0x00, 0x00}}},
310 /* /91 */
311 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
312 0xe0, 0x00, 0x00, 0x00, 0x00}}},
313 /* /92 */
314 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
315 0xf0, 0x00, 0x00, 0x00, 0x00}}},
316 /* /93 */
317 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
318 0xf8, 0x00, 0x00, 0x00, 0x00}}},
319 /* /94 */
320 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
321 0xfc, 0x00, 0x00, 0x00, 0x00}}},
322 /* /95 */
323 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
324 0xfe, 0x00, 0x00, 0x00, 0x00}}},
325 /* /96 */
326 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
327 0xff, 0x00, 0x00, 0x00, 0x00}}},
328 /* /97 */
329 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
330 0xff, 0x80, 0x00, 0x00, 0x00}}},
331 /* /98 */
332 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
333 0xff, 0xc0, 0x00, 0x00, 0x00}}},
334 /* /99 */
335 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
336 0xff, 0xe0, 0x00, 0x00, 0x00}}},
337 /* /100 */
338 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
339 0xff, 0xf0, 0x00, 0x00, 0x00}}},
340 /* /101 */
341 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
342 0xff, 0xf8, 0x00, 0x00, 0x00}}},
343 /* /102 */
344 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
345 0xff, 0xfc, 0x00, 0x00, 0x00}}},
346 /* /103 */
347 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
348 0xff, 0xfe, 0x00, 0x00, 0x00}}},
349 /* /104 */
350 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
351 0xff, 0xff, 0x00, 0x00, 0x00}}},
352 /* /105 */
353 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
354 0xff, 0xff, 0x80, 0x00, 0x00}}},
355 /* /106 */
356 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
357 0xff, 0xff, 0xc0, 0x00, 0x00}}},
358 /* /107 */
359 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
360 0xff, 0xff, 0xe0, 0x00, 0x00}}},
361 /* /108 */
362 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
363 0xff, 0xff, 0xf0, 0x00, 0x00}}},
364 /* /109 */
365 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
366 0xff, 0xff, 0xf8, 0x00, 0x00}}},
367 /* /110 */
368 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
369 0xff, 0xff, 0xfc, 0x00, 0x00}}},
370 /* /111 */
371 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
372 0xff, 0xff, 0xfe, 0x00, 0x00}}},
373 /* /112 */
374 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
375 0xff, 0xff, 0xff, 0x00, 0x00}}},
376 /* /113 */
377 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
378 0xff, 0xff, 0xff, 0x80, 0x00}}},
379 /* /114 */
380 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
381 0xff, 0xff, 0xff, 0xc0, 0x00}}},
382 /* /115 */
383 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
384 0xff, 0xff, 0xff, 0xe0, 0x00}}},
385 /* /116 */
386 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
387 0xff, 0xff, 0xff, 0xf0, 0x00}}},
388 /* /117 */
389 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
390 0xff, 0xff, 0xff, 0xf8, 0x00}}},
391 /* /118 */
392 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
393 0xff, 0xff, 0xff, 0xfc, 0x00}}},
394 /* /119 */
395 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
396 0xff, 0xff, 0xff, 0xfe, 0x00}}},
397 /* /120 */
398 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
399 0xff, 0xff, 0xff, 0xff, 0x00}}},
400 /* /121 */
401 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
402 0xff, 0xff, 0xff, 0xff, 0x80}}},
403 /* /122 */
404 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
405 0xff, 0xff, 0xff, 0xff, 0xc0}}},
406 /* /123 */
407 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
408 0xff, 0xff, 0xff, 0xff, 0xe0}}},
409 /* /124 */
410 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
411 0xff, 0xff, 0xff, 0xff, 0xf0}}},
412 /* /125 */
413 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
414 0xff, 0xff, 0xff, 0xff, 0xf8}}},
415 /* /126 */
416 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
417 0xff, 0xff, 0xff, 0xff, 0xfc}}},
418 /* /127 */
419 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
420 0xff, 0xff, 0xff, 0xff, 0xfe}}},
421 /* /128 */
422 {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
423 0xff, 0xff, 0xff, 0xff, 0xff}}}};
718e3744 424
425/* Number of bits in prefix type. */
426#ifndef PNBBY
427#define PNBBY 8
428#endif /* PNBBY */
429
430#define MASKBIT(offset) ((0xff << (PNBBY - (offset))) & 0xff)
431
b7cfce93 432int is_zero_mac(struct ethaddr *mac)
69b61704
MK		 433{
434 int i = 0;
435
436 for (i = 0; i < ETH_ALEN; i++) {
437 if (mac->octet[i])
438 return 0;
439 }
440
441 return 1;
442}
443
d7c0a89a 444unsigned int prefix_bit(const uint8_t *prefix, const uint8_t prefixlen)
f63f06da 445{
d62a17ae 446 unsigned int offset = prefixlen / 8;
447 unsigned int shift = 7 - (prefixlen % 8);
448
449 return (prefix[offset] >> shift) & 1;
f63f06da
PJ		 450}
451
d7c0a89a 452unsigned int prefix6_bit(const struct in6_addr *prefix, const uint8_t prefixlen)
f63f06da 453{
d7c0a89a 454 return prefix_bit((const uint8_t *)&prefix->s6_addr, prefixlen);
f63f06da 455}
6b0655a2 456
d62a17ae 457int str2family(const char *string)
f3ccedaa 458{
d62a17ae 459 if (!strcmp("ipv4", string))
460 return AF_INET;
461 else if (!strcmp("ipv6", string))
462 return AF_INET6;
463 else if (!strcmp("ethernet", string))
464 return AF_ETHERNET;
b03b8898
DS		 465 else if (!strcmp("evpn", string))
466 return AF_EVPN;
d62a17ae 467 return -1;
f3ccedaa
CF		 468}
469
718e3744 470/* Address Famiy Identifier to Address Family converter. */
d62a17ae 471int afi2family(afi_t afi)
718e3744 472{
d62a17ae 473 if (afi == AFI_IP)
474 return AF_INET;
475 else if (afi == AFI_IP6)
476 return AF_INET6;
477 else if (afi == AFI_L2VPN)
478 return AF_ETHERNET;
b03b8898 479 /* NOTE: EVPN code should NOT use this interface. */
d62a17ae 480 return 0;
718e3744 481}
482
d62a17ae 483afi_t family2afi(int family)
718e3744 484{
d62a17ae 485 if (family == AF_INET)
486 return AFI_IP;
487 else if (family == AF_INET6)
488 return AFI_IP6;
b03b8898 489 else if (family == AF_ETHERNET || family == AF_EVPN)
d62a17ae 490 return AFI_L2VPN;
491 return 0;
718e3744 492}
493
d62a17ae 494const char *afi2str(afi_t afi)
32ac65d9 495{
d62a17ae 496 switch (afi) {
497 case AFI_IP:
498 return "IPv4";
499 case AFI_IP6:
500 return "IPv6";
501 case AFI_L2VPN:
502 return "l2vpn";
503 case AFI_MAX:
504 return "bad-value";
505 default:
506 break;
507 }
508 return NULL;
32ac65d9
LB		 509}
510
d62a17ae 511const char *safi2str(safi_t safi)
1ec23d90 512{
d62a17ae 513 switch (safi) {
514 case SAFI_UNICAST:
515 return "unicast";
516 case SAFI_MULTICAST:
517 return "multicast";
518 case SAFI_MPLS_VPN:
519 return "vpn";
520 case SAFI_ENCAP:
521 return "encap";
522 case SAFI_EVPN:
523 return "evpn";
524 case SAFI_LABELED_UNICAST:
525 return "labeled-unicast";
5c525538
RW		 526 default:
527 return "unknown";
d62a17ae 528 }
1ec23d90
LB		 529}
530
718e3744 531/* If n includes p prefix then return 1 else return 0. */
d62a17ae 532int prefix_match(const struct prefix *n, const struct prefix *p)
718e3744 533{
d62a17ae 534 int offset;
535 int shift;
d7c0a89a 536 const uint8_t *np, *pp;
d62a17ae 537
538 /* If n's prefix is longer than p's one return 0. */
539 if (n->prefixlen > p->prefixlen)
540 return 0;
541
9a14899b
PG		 542 if (n->family == AF_FLOWSPEC) {
543 /* prefixlen is unused. look at fs prefix len */
544 if (n->u.prefix_flowspec.prefixlen >
545 p->u.prefix_flowspec.prefixlen)
546 return 0;
547
548 /* Set both prefix's head pointer. */
549 np = (const uint8_t *)&n->u.prefix_flowspec.ptr;
550 pp = (const uint8_t *)&p->u.prefix_flowspec.ptr;
551
552 offset = n->u.prefix_flowspec.prefixlen;
553
554 while (offset--)
555 if (np[offset] != pp[offset])
556 return 0;
557 return 1;
558 }
559
d62a17ae 560 /* Set both prefix's head pointer. */
d7c0a89a
QY		 561 np = (const uint8_t *)&n->u.prefix;
562 pp = (const uint8_t *)&p->u.prefix;
d62a17ae 563
564 offset = n->prefixlen / PNBBY;
565 shift = n->prefixlen % PNBBY;
566
567 if (shift)
568 if (maskbit[shift] & (np[offset] ^ pp[offset]))
569 return 0;
570
571 while (offset--)
572 if (np[offset] != pp[offset])
573 return 0;
574 return 1;
3bec29ac
DS		 575}
576
577/* If n includes p then return 1 else return 0. Prefix mask is not considered */
d62a17ae 578int prefix_match_network_statement(const struct prefix *n,
579 const struct prefix *p)
3bec29ac 580{
d62a17ae 581 int offset;
582 int shift;
d7c0a89a 583 const uint8_t *np, *pp;
3bec29ac 584
d62a17ae 585 /* Set both prefix's head pointer. */
d7c0a89a
QY		 586 np = (const uint8_t *)&n->u.prefix;
587 pp = (const uint8_t *)&p->u.prefix;
3bec29ac 588
d62a17ae 589 offset = n->prefixlen / PNBBY;
590 shift = n->prefixlen % PNBBY;
3bec29ac 591
d62a17ae 592 if (shift)
593 if (maskbit[shift] & (np[offset] ^ pp[offset]))
594 return 0;
3bec29ac 595
d62a17ae 596 while (offset--)
597 if (np[offset] != pp[offset])
598 return 0;
599 return 1;
718e3744 600}
601
d62a17ae 602void prefix_copy(struct prefix *dest, const struct prefix *src)
718e3744 603{
d62a17ae 604 dest->family = src->family;
605 dest->prefixlen = src->prefixlen;
606
607 if (src->family == AF_INET)
608 dest->u.prefix4 = src->u.prefix4;
609 else if (src->family == AF_INET6)
610 dest->u.prefix6 = src->u.prefix6;
611 else if (src->family == AF_ETHERNET) {
b03b8898
DS		 612 memcpy(&dest->u.prefix_eth, &src->u.prefix_eth,
613 sizeof(struct ethaddr));
614 } else if (src->family == AF_EVPN) {
d62a17ae 615 memcpy(&dest->u.prefix_evpn, &src->u.prefix_evpn,
616 sizeof(struct evpn_addr));
617 } else if (src->family == AF_UNSPEC) {
618 dest->u.lp.id = src->u.lp.id;
619 dest->u.lp.adv_router = src->u.lp.adv_router;
9a14899b
PG		 620 } else if (src->family == AF_FLOWSPEC) {
621 void *temp;
622 int len;
623
624 len = src->u.prefix_flowspec.prefixlen;
625 dest->u.prefix_flowspec.prefixlen =
626 src->u.prefix_flowspec.prefixlen;
627 dest->family = src->family;
628 temp = XCALLOC(MTYPE_PREFIX_FLOWSPEC, len);
629 dest->u.prefix_flowspec.ptr = (uintptr_t)temp;
630 memcpy((void *)dest->u.prefix_flowspec.ptr,
631 (void *)src->u.prefix_flowspec.ptr, len);
d62a17ae 632 } else {
633 zlog_err("prefix_copy(): Unknown address family %d",
634 src->family);
635 assert(0);
636 }
718e3744 637}
638
d62a17ae 639/*
9d24baaa 640 * Return 1 if the address/netmask contained in the prefix structure
641 * is the same, and else return 0. For this routine, 'same' requires
642 * that not only the prefix length and the network part be the same,
643 * but also the host part. Thus, 10.0.0.1/8 and 10.0.0.2/8 are not
644 * the same. Note that this routine has the same return value sense
645 * as '==' (which is different from prefix_cmp).
646 */
d62a17ae 647int prefix_same(const struct prefix *p1, const struct prefix *p2)
718e3744 648{
d62a17ae 649 if ((p1 && !p2) || (!p1 && p2))
650 return 0;
651
652 if (!p1 && !p2)
653 return 1;
654
655 if (p1->family == p2->family && p1->prefixlen == p2->prefixlen) {
656 if (p1->family == AF_INET)
19aad877 657 if (IPV4_ADDR_SAME(&p1->u.prefix4, &p2->u.prefix4))
d62a17ae 658 return 1;
659 if (p1->family == AF_INET6)
660 if (IPV6_ADDR_SAME(&p1->u.prefix6.s6_addr,
661 &p2->u.prefix6.s6_addr))
662 return 1;
663 if (p1->family == AF_ETHERNET)
b03b8898
DS		 664 if (!memcmp(&p1->u.prefix_eth, &p2->u.prefix_eth,
665 sizeof(struct ethaddr)))
666 return 1;
667 if (p1->family == AF_EVPN)
d62a17ae 668 if (!memcmp(&p1->u.prefix_evpn, &p2->u.prefix_evpn,
669 sizeof(struct evpn_addr)))
670 return 1;
9a14899b
PG		 671 if (p1->family == AF_FLOWSPEC) {
672 if (p1->u.prefix_flowspec.prefixlen !=
673 p2->u.prefix_flowspec.prefixlen)
674 return 0;
675 if (!memcmp(&p1->u.prefix_flowspec.ptr,
676 &p2->u.prefix_flowspec.ptr,
677 p2->u.prefix_flowspec.prefixlen))
678 return 1;
679 }
d62a17ae 680 }
681 return 0;
718e3744 682}
683
9d24baaa 684/*
685 * Return 0 if the network prefixes represented by the struct prefix
686 * arguments are the same prefix, and 1 otherwise. Network prefixes
687 * are considered the same if the prefix lengths are equal and the
688 * network parts are the same. Host bits (which are considered masked
689 * by the prefix length) are not significant. Thus, 10.0.0.1/8 and
690 * 10.0.0.2/8 are considered equivalent by this routine. Note that
691 * this routine has the same return sense as strcmp (which is different
692 * from prefix_same).
693 */
d62a17ae 694int prefix_cmp(const struct prefix *p1, const struct prefix *p2)
718e3744 695{
d62a17ae 696 int offset;
697 int shift;
718e3744 698
d62a17ae 699 /* Set both prefix's head pointer. */
9a14899b
PG		 700 const uint8_t *pp1;
701 const uint8_t *pp2;
718e3744 702
9a14899b 703 if (p1->family != p2->family)
d62a17ae 704 return 1;
9a14899b
PG		 705 if (p1->family == AF_FLOWSPEC) {
706 pp1 = (const uint8_t *)p1->u.prefix_flowspec.ptr;
707 pp2 = (const uint8_t *)p2->u.prefix_flowspec.ptr;
718e3744 708
9a14899b
PG		 709 if (p1->u.prefix_flowspec.prefixlen !=
710 p2->u.prefix_flowspec.prefixlen)
711 return 1;
712
713 offset = p1->u.prefix_flowspec.prefixlen;
714 while (offset--)
715 if (pp1[offset] != pp2[offset])
716 return 1;
717 return 0;
718 }
719 pp1 = (const uint8_t *)&p1->u.prefix;
720 pp2 = (const uint8_t *)&p2->u.prefix;
721
722 if (p1->prefixlen != p2->prefixlen)
723 return 1;
d62a17ae 724 offset = p1->prefixlen / PNBBY;
725 shift = p1->prefixlen % PNBBY;
718e3744 726
d62a17ae 727 if (shift)
728 if (maskbit[shift] & (pp1[offset] ^ pp2[offset]))
729 return 1;
718e3744 730
d62a17ae 731 while (offset--)
732 if (pp1[offset] != pp2[offset])
733 return 1;
718e3744 734
d62a17ae 735 return 0;
718e3744 736}
737
17e52061
DL		 738/*
739 * Count the number of common bits in 2 prefixes. The prefix length is
740 * ignored for this function; the whole prefix is compared. If the prefix
741 * address families don't match, return -1; otherwise the return value is
742 * in range 0 ... maximum prefix length for the address family.
743 */
d62a17ae 744int prefix_common_bits(const struct prefix *p1, const struct prefix *p2)
17e52061 745{
d62a17ae 746 int pos, bit;
747 int length = 0;
d7c0a89a 748 uint8_t xor ;
d62a17ae 749
750 /* Set both prefix's head pointer. */
d7c0a89a
QY		 751 const uint8_t *pp1 = (const uint8_t *)&p1->u.prefix;
752 const uint8_t *pp2 = (const uint8_t *)&p2->u.prefix;
d62a17ae 753
754 if (p1->family == AF_INET)
755 length = IPV4_MAX_BYTELEN;
756 if (p1->family == AF_INET6)
757 length = IPV6_MAX_BYTELEN;
758 if (p1->family == AF_ETHERNET)
b03b8898
DS		 759 length = ETH_ALEN;
760 if (p1->family == AF_EVPN)
d62a17ae 761 length = 8 * sizeof(struct evpn_addr);
762
763 if (p1->family != p2->family || !length)
764 return -1;
765
766 for (pos = 0; pos < length; pos++)
767 if (pp1[pos] != pp2[pos])
768 break;
769 if (pos == length)
770 return pos * 8;
771
772 xor = pp1[pos] ^ pp2[pos];
773 for (bit = 0; bit < 8; bit++)
774 if (xor&(1 << (7 - bit)))
775 break;
776
777 return pos * 8 + bit;
17e52061
DL		 778}
779
718e3744 780/* Return prefix family type string. */
d62a17ae 781const char *prefix_family_str(const struct prefix *p)
718e3744 782{
d62a17ae 783 if (p->family == AF_INET)
784 return "inet";
785 if (p->family == AF_INET6)
786 return "inet6";
787 if (p->family == AF_ETHERNET)
788 return "ether";
b03b8898
DS		 789 if (p->family == AF_EVPN)
790 return "evpn";
d62a17ae 791 return "unspec";
718e3744 792}
793
794/* Allocate new prefix_ipv4 structure. */
d62a17ae 795struct prefix_ipv4 *prefix_ipv4_new()
718e3744 796{
d62a17ae 797 struct prefix_ipv4 *p;
798
799 /* Call prefix_new to allocate a full-size struct prefix to avoid
800 problems
801 where the struct prefix_ipv4 is cast to struct prefix and unallocated
802 bytes were being referenced (e.g. in structure assignments). */
803 p = (struct prefix_ipv4 *)prefix_new();
804 p->family = AF_INET;
805 return p;
718e3744 806}
807
808/* Free prefix_ipv4 structure. */
d62a17ae 809void prefix_ipv4_free(struct prefix_ipv4 *p)
718e3744 810{
d62a17ae 811 prefix_free((struct prefix *)p);
718e3744 812}
813
814/* When string format is invalid return 0. */
d62a17ae 815int str2prefix_ipv4(const char *str, struct prefix_ipv4 *p)
718e3744 816{
d62a17ae 817 int ret;
818 int plen;
819 char *pnt;
820 char *cp;
821
822 /* Find slash inside string. */
823 pnt = strchr(str, '/');
824
825 /* String doesn't contail slash. */
826 if (pnt == NULL) {
827 /* Convert string to prefix. */
828 ret = inet_aton(str, &p->prefix);
829 if (ret == 0)
830 return 0;
831
832 /* If address doesn't contain slash we assume it host address.
833 */
834 p->family = AF_INET;
835 p->prefixlen = IPV4_MAX_BITLEN;
836
837 return ret;
838 } else {
839 cp = XMALLOC(MTYPE_TMP, (pnt - str) + 1);
840 strncpy(cp, str, pnt - str);
841 *(cp + (pnt - str)) = '\0';
842 ret = inet_aton(cp, &p->prefix);
843 XFREE(MTYPE_TMP, cp);
844
845 /* Get prefix length. */
d7c0a89a 846 plen = (uint8_t)atoi(++pnt);
d62a17ae 847 if (plen > IPV4_MAX_PREFIXLEN)
848 return 0;
849
850 p->family = AF_INET;
851 p->prefixlen = plen;
852 }
718e3744 853
d62a17ae 854 return ret;
718e3744 855}
856
32ac65d9 857/* When string format is invalid return 0. */
d62a17ae 858int str2prefix_eth(const char *str, struct prefix_eth *p)
32ac65d9 859{
d62a17ae 860 int ret = 0;
861 int plen = 48;
862 char *pnt;
863 char *cp = NULL;
864 const char *str_addr = str;
865 unsigned int a[6];
866 int i;
0f6476cc 867 bool slash = false;
d62a17ae 868
3b0f6068
DL		 869 if (!strcmp(str, "any")) {
870 memset(p, 0, sizeof(*p));
871 p->family = AF_ETHERNET;
872 return 1;
873 }
874
d62a17ae 875 /* Find slash inside string. */
876 pnt = strchr(str, '/');
877
878 if (pnt) {
879 /* Get prefix length. */
d7c0a89a 880 plen = (uint8_t)atoi(++pnt);
d62a17ae 881 if (plen > 48) {
882 ret = 0;
883 goto done;
884 }
885
886 cp = XMALLOC(MTYPE_TMP, (pnt - str) + 1);
887 strncpy(cp, str, pnt - str);
888 *(cp + (pnt - str)) = '\0';
889
890 str_addr = cp;
0f6476cc 891 slash = true;
32ac65d9
LB		 892 }
893
d62a17ae 894 /* Convert string to prefix. */
895 if (sscanf(str_addr, "%2x:%2x:%2x:%2x:%2x:%2x", a + 0, a + 1, a + 2,
896 a + 3, a + 4, a + 5)
897 != 6) {
898 ret = 0;
899 goto done;
900 }
901 for (i = 0; i < 6; ++i) {
902 p->eth_addr.octet[i] = a[i] & 0xff;
903 }
904 p->prefixlen = plen;
905 p->family = AF_ETHERNET;
0f6476cc
DS		 906
907 /*
908 * special case to allow old configurations to work
909 * Since all zero's is implicitly meant to allow
910 * a comparison to zero, let's assume
911 */
912 if (!slash && is_zero_mac(&(p->eth_addr)))
996c9314 913 p->prefixlen = 0;
0f6476cc 914
d62a17ae 915 ret = 1;
32ac65d9
LB		 916
917done:
d62a17ae 918 if (cp)
919 XFREE(MTYPE_TMP, cp);
32ac65d9 920
d62a17ae 921 return ret;
32ac65d9
LB		 922}
923
051954f5 924/* Convert masklen into IP address's netmask (network byte order). */
d62a17ae 925void masklen2ip(const int masklen, struct in_addr *netmask)
718e3744 926{
d62a17ae 927 assert(masklen >= 0 && masklen <= IPV4_MAX_BITLEN);
e96b3121 928
d62a17ae 929 /* left shift is only defined for less than the size of the type.
930 * we unconditionally use long long in case the target platform
931 * has defined behaviour for << 32 (or has a 64-bit left shift) */
e96b3121 932
d62a17ae 933 if (sizeof(unsigned long long) > 4)
934 netmask->s_addr = htonl(0xffffffffULL << (32 - masklen));
935 else
936 netmask->s_addr =
937 htonl(masklen ? 0xffffffffU << (32 - masklen) : 0);
718e3744 938}
939
940/* Convert IP address's netmask into integer. We assume netmask is
941 sequential one. Argument netmask should be network byte order. */
d7c0a89a 942uint8_t ip_masklen(struct in_addr netmask)
718e3744 943{
d62a17ae 944 uint32_t tmp = ~ntohl(netmask.s_addr);
945 if (tmp)
946 /* clz: count leading zeroes. sadly, the behaviour of this
947 * builtin
948 * is undefined for a 0 argument, even though most CPUs give 32
949 */
950 return __builtin_clz(tmp);
951 else
952 return 32;
718e3744 953}
954
caff7905 955/* Apply mask to IPv4 prefix (network byte order). */
d62a17ae 956void apply_mask_ipv4(struct prefix_ipv4 *p)
718e3744 957{
d62a17ae 958 struct in_addr mask;
959 masklen2ip(p->prefixlen, &mask);
960 p->prefix.s_addr &= mask.s_addr;
718e3744 961}
962
963/* If prefix is 0.0.0.0/0 then return 1 else return 0. */
d62a17ae 964int prefix_ipv4_any(const struct prefix_ipv4 *p)
718e3744 965{
d62a17ae 966 return (p->prefix.s_addr == 0 && p->prefixlen == 0);
718e3744 967}
6b0655a2 968
718e3744 969/* Allocate a new ip version 6 route */
d62a17ae 970struct prefix_ipv6 *prefix_ipv6_new(void)
718e3744 971{
d62a17ae 972 struct prefix_ipv6 *p;
718e3744 973
d62a17ae 974 /* Allocate a full-size struct prefix to avoid problems with structure
975 size mismatches. */
976 p = (struct prefix_ipv6 *)prefix_new();
977 p->family = AF_INET6;
978 return p;
718e3744 979}
980
981/* Free prefix for IPv6. */
d62a17ae 982void prefix_ipv6_free(struct prefix_ipv6 *p)
718e3744 983{
d62a17ae 984 prefix_free((struct prefix *)p);
718e3744 985}
986
987/* If given string is valid return pin6 else return NULL */
d62a17ae 988int str2prefix_ipv6(const char *str, struct prefix_ipv6 *p)
718e3744 989{
d62a17ae 990 char *pnt;
991 char *cp;
992 int ret;
993
994 pnt = strchr(str, '/');
995
996 /* If string doesn't contain `/' treat it as host route. */
997 if (pnt == NULL) {
998 ret = inet_pton(AF_INET6, str, &p->prefix);
999 if (ret == 0)
1000 return 0;
1001 p->prefixlen = IPV6_MAX_BITLEN;
1002 } else {
1003 int plen;
1004
1005 cp = XMALLOC(MTYPE_TMP, (pnt - str) + 1);
1006 strncpy(cp, str, pnt - str);
1007 *(cp + (pnt - str)) = '\0';
1008 ret = inet_pton(AF_INET6, cp, &p->prefix);
1009 XFREE(MTYPE_TMP, cp);
1010 if (ret == 0)
1011 return 0;
d7c0a89a 1012 plen = (uint8_t)atoi(++pnt);
d62a17ae 1013 if (plen > IPV6_MAX_BITLEN)
1014 return 0;
1015 p->prefixlen = plen;
1016 }
1017 p->family = AF_INET6;
718e3744 1018
d62a17ae 1019 return ret;
718e3744 1020}
1021
b04c699e 1022/* Convert struct in6_addr netmask into integer.
d7c0a89a 1023 * FIXME return uint8_t as ip_maskleni() does. */
d62a17ae 1024int ip6_masklen(struct in6_addr netmask)
718e3744 1025{
d62a17ae 1026 int len = 0;
1027 unsigned char val;
1028 unsigned char *pnt;
1029
1030 pnt = (unsigned char *)&netmask;
1031
1032 while ((*pnt == 0xff) && len < IPV6_MAX_BITLEN) {
1033 len += 8;
1034 pnt++;
718e3744 1035 }
d62a17ae 1036
1037 if (len < IPV6_MAX_BITLEN) {
1038 val = *pnt;
1039 while (val) {
1040 len++;
1041 val <<= 1;
1042 }
1043 }
1044 return len;
718e3744 1045}
1046
d62a17ae 1047void masklen2ip6(const int masklen, struct in6_addr *netmask)
718e3744 1048{
d62a17ae 1049 assert(masklen >= 0 && masklen <= IPV6_MAX_BITLEN);
1050 memcpy(netmask, maskbytes6 + masklen, sizeof(struct in6_addr));
718e3744 1051}
1052
d62a17ae 1053void apply_mask_ipv6(struct prefix_ipv6 *p)
718e3744 1054{
d7c0a89a 1055 uint8_t *pnt;
d62a17ae 1056 int index;
1057 int offset;
8c7f49d2 1058
d62a17ae 1059 index = p->prefixlen / 8;
8c7f49d2 1060
d62a17ae 1061 if (index < 16) {
d7c0a89a 1062 pnt = (uint8_t *)&p->prefix;
d62a17ae 1063 offset = p->prefixlen % 8;
8c7f49d2 1064
d62a17ae 1065 pnt[index] &= maskbit[offset];
1066 index++;
8c7f49d2 1067
d62a17ae 1068 while (index < 16)
1069 pnt[index++] = 0;
1070 }
718e3744 1071}
1072
d62a17ae 1073void apply_mask(struct prefix *p)
718e3744 1074{
d62a17ae 1075 switch (p->family) {
1076 case AF_INET:
1077 apply_mask_ipv4((struct prefix_ipv4 *)p);
1078 break;
1079 case AF_INET6:
1080 apply_mask_ipv6((struct prefix_ipv6 *)p);
1081 break;
1082 default:
1083 break;
1084 }
1085 return;
718e3744 1086}
1087
b04c699e 1088/* Utility function of convert between struct prefix <=> union sockunion.
1089 * FIXME This function isn't used anywhere. */
d62a17ae 1090struct prefix *sockunion2prefix(const union sockunion *dest,
1091 const union sockunion *mask)
718e3744 1092{
d62a17ae 1093 if (dest->sa.sa_family == AF_INET) {
1094 struct prefix_ipv4 *p;
1095
1096 p = prefix_ipv4_new();
1097 p->family = AF_INET;
1098 p->prefix = dest->sin.sin_addr;
1099 p->prefixlen = ip_masklen(mask->sin.sin_addr);
1100 return (struct prefix *)p;
1101 }
1102 if (dest->sa.sa_family == AF_INET6) {
1103 struct prefix_ipv6 *p;
1104
1105 p = prefix_ipv6_new();
1106 p->family = AF_INET6;
1107 p->prefixlen = ip6_masklen(mask->sin6.sin6_addr);
1108 memcpy(&p->prefix, &dest->sin6.sin6_addr,
1109 sizeof(struct in6_addr));
1110 return (struct prefix *)p;
1111 }
1112 return NULL;
718e3744 1113}
1114
b04c699e 1115/* Utility function of convert between struct prefix <=> union sockunion. */
d62a17ae 1116struct prefix *sockunion2hostprefix(const union sockunion *su,
1117 struct prefix *prefix)
718e3744 1118{
d62a17ae 1119 if (su->sa.sa_family == AF_INET) {
1120 struct prefix_ipv4 *p;
1121
1122 p = prefix ? (struct prefix_ipv4 *)prefix : prefix_ipv4_new();
1123 p->family = AF_INET;
1124 p->prefix = su->sin.sin_addr;
1125 p->prefixlen = IPV4_MAX_BITLEN;
1126 return (struct prefix *)p;
1127 }
1128 if (su->sa.sa_family == AF_INET6) {
1129 struct prefix_ipv6 *p;
1130
1131 p = prefix ? (struct prefix_ipv6 *)prefix : prefix_ipv6_new();
1132 p->family = AF_INET6;
1133 p->prefixlen = IPV6_MAX_BITLEN;
1134 memcpy(&p->prefix, &su->sin6.sin6_addr,
1135 sizeof(struct in6_addr));
1136 return (struct prefix *)p;
1137 }
1138 return NULL;
718e3744 1139}
1140
d62a17ae 1141void prefix2sockunion(const struct prefix *p, union sockunion *su)
17e52061 1142{
d62a17ae 1143 memset(su, 0, sizeof(*su));
1144
1145 su->sa.sa_family = p->family;
1146 if (p->family == AF_INET)
1147 su->sin.sin_addr = p->u.prefix4;
1148 if (p->family == AF_INET6)
1149 memcpy(&su->sin6.sin6_addr, &p->u.prefix6,
1150 sizeof(struct in6_addr));
17e52061
DL		 1151}
1152
d62a17ae 1153int prefix_blen(const struct prefix *p)
718e3744 1154{
d62a17ae 1155 switch (p->family) {
1156 case AF_INET:
1157 return IPV4_MAX_BYTELEN;
1158 break;
1159 case AF_INET6:
1160 return IPV6_MAX_BYTELEN;
1161 break;
1162 case AF_ETHERNET:
7628d862 1163 return ETH_ALEN;
b03b8898 1164 break;
d62a17ae 1165 }
1166 return 0;
718e3744 1167}
1168
1169/* Generic function for conversion string to struct prefix. */
d62a17ae 1170int str2prefix(const char *str, struct prefix *p)
718e3744 1171{
d62a17ae 1172 int ret;
718e3744 1173
d62a17ae 1174 /* First we try to convert string to struct prefix_ipv4. */
1175 ret = str2prefix_ipv4(str, (struct prefix_ipv4 *)p);
1176 if (ret)
1177 return ret;
718e3744 1178
d62a17ae 1179 /* Next we try to convert string to struct prefix_ipv6. */
1180 ret = str2prefix_ipv6(str, (struct prefix_ipv6 *)p);
1181 if (ret)
1182 return ret;
718e3744 1183
d62a17ae 1184 /* Next we try to convert string to struct prefix_eth. */
1185 ret = str2prefix_eth(str, (struct prefix_eth *)p);
1186 if (ret)
1187 return ret;
32ac65d9 1188
d62a17ae 1189 return 0;
718e3744 1190}
1191
b03b8898 1192static const char *prefixevpn2str(const struct prefix *p, char *str, int size)
86f1ef44 1193{
d7c0a89a 1194 uint8_t family;
d62a17ae 1195 char buf[PREFIX2STR_BUFFER];
1196 char buf2[ETHER_ADDR_STRLEN];
1197
1198 if (p->u.prefix_evpn.route_type == 2) {
1199 if (IS_EVPN_PREFIX_IPADDR_NONE((struct prefix_evpn *)p))
1200 snprintf(str, size, "[%d]:[%s]/%d",
1201 p->u.prefix_evpn.route_type,
1202 prefix_mac2str(&p->u.prefix_evpn.mac, buf2,
1203 sizeof(buf2)),
1204 p->prefixlen);
1205 else {
1206 family = IS_EVPN_PREFIX_IPADDR_V4(
1207 (struct prefix_evpn *)p)
1208 ? AF_INET
1209 : AF_INET6;
1210 snprintf(str, size, "[%d]:[%s]:[%s]/%d",
1211 p->u.prefix_evpn.route_type,
1212 prefix_mac2str(&p->u.prefix_evpn.mac, buf2,
1213 sizeof(buf2)),
1214 inet_ntop(family, &p->u.prefix_evpn.ip.ip.addr,
1215 buf, PREFIX2STR_BUFFER),
1216 p->prefixlen);
1217 }
1218 } else if (p->u.prefix_evpn.route_type == 3) {
1219 family = IS_EVPN_PREFIX_IPADDR_V4((struct prefix_evpn *)p)
1220 ? AF_INET
1221 : AF_INET6;
1222 snprintf(str, size, "[%d]:[%s]/%d", p->u.prefix_evpn.route_type,
1223 inet_ntop(family, &p->u.prefix_evpn.ip.ip.addr, buf,
1224 PREFIX2STR_BUFFER),
1225 p->prefixlen);
1226 } else if (p->u.prefix_evpn.route_type == 5) {
1227 family = IS_EVPN_PREFIX_IPADDR_V4((struct prefix_evpn *)p)
1228 ? AF_INET
1229 : AF_INET6;
342dd0c6 1230 snprintf(str, size, "[%d]:[%u][%s/%d]/%d",
d62a17ae 1231 p->u.prefix_evpn.route_type, p->u.prefix_evpn.eth_tag,
1232 inet_ntop(family, &p->u.prefix_evpn.ip.ip.addr, buf,
1233 PREFIX2STR_BUFFER),
996c9314 1234 p->u.prefix_evpn.ip_prefix_length, p->prefixlen);
d62a17ae 1235 } else {
b03b8898 1236 sprintf(str, "Unsupported EVPN route type %d",
996c9314 1237 p->u.prefix_evpn.route_type);
d62a17ae 1238 }
1239
1240 return str;
86f1ef44 1241}
1242
d62a17ae 1243const char *prefix2str(union prefixconstptr pu, char *str, int size)
718e3744 1244{
d62a17ae 1245 const struct prefix *p = pu.p;
1246 char buf[PREFIX2STR_BUFFER];
1247
1248 switch (p->family) {
1249 case AF_INET:
1250 case AF_INET6:
9d303b37
DL		 1251 snprintf(str, size, "%s/%d", inet_ntop(p->family, &p->u.prefix,
1252 buf, PREFIX2STR_BUFFER),
d62a17ae 1253 p->prefixlen);
1254 break;
1255
1256 case AF_ETHERNET:
b03b8898
DS		 1257 snprintf(str, size, "%s/%d",
1258 prefix_mac2str(&p->u.prefix_eth, buf, sizeof(buf)),
1259 p->prefixlen);
1260 break;
1261
1262 case AF_EVPN:
1263 prefixevpn2str(p, str, size);
d62a17ae 1264 break;
1265
9a14899b
PG		 1266 case AF_FLOWSPEC:
1267 sprintf(str, "FS prefix");
1268 break;
1269
d62a17ae 1270 default:
1271 sprintf(str, "UNK prefix");
1272 break;
1273 }
1274
1275 return str;
718e3744 1276}
1277
d62a17ae 1278struct prefix *prefix_new()
718e3744 1279{
d62a17ae 1280 struct prefix *p;
718e3744 1281
d62a17ae 1282 p = XCALLOC(MTYPE_PREFIX, sizeof *p);
1283 return p;
718e3744 1284}
1285
1286/* Free prefix structure. */
d62a17ae 1287void prefix_free(struct prefix *p)
718e3744 1288{
d62a17ae 1289 XFREE(MTYPE_PREFIX, p);
718e3744 1290}
1291
1292/* Utility function. Check the string only contains digit
b04c699e 1293 * character.
1294 * FIXME str.[c|h] would be better place for this function. */
d62a17ae 1295int all_digit(const char *str)
718e3744 1296{
d62a17ae 1297 for (; *str != '\0'; str++)
1298 if (!isdigit((int)*str))
1299 return 0;
1300 return 1;
718e3744 1301}
1302
1303/* Utility function to convert ipv4 prefixes to Classful prefixes */
d62a17ae 1304void apply_classful_mask_ipv4(struct prefix_ipv4 *p)
718e3744 1305{
1306
d7c0a89a 1307 uint32_t destination;
d62a17ae 1308
1309 destination = ntohl(p->prefix.s_addr);
1310
1311 if (p->prefixlen == IPV4_MAX_PREFIXLEN)
1312 ;
1313 /* do nothing for host routes */
1314 else if (IN_CLASSC(destination)) {
1315 p->prefixlen = 24;
1316 apply_mask_ipv4(p);
1317 } else if (IN_CLASSB(destination)) {
1318 p->prefixlen = 16;
1319 apply_mask_ipv4(p);
1320 } else {
1321 p->prefixlen = 8;
1322 apply_mask_ipv4(p);
1323 }
718e3744 1324}
1325
d62a17ae 1326in_addr_t ipv4_network_addr(in_addr_t hostaddr, int masklen)
3fb9cd6e 1327{
d62a17ae 1328 struct in_addr mask;
3fb9cd6e 1329
d62a17ae 1330 masklen2ip(masklen, &mask);
1331 return hostaddr & mask.s_addr;
3fb9cd6e 1332}
1333
d62a17ae 1334in_addr_t ipv4_broadcast_addr(in_addr_t hostaddr, int masklen)
3fb9cd6e 1335{
d62a17ae 1336 struct in_addr mask;
1337
1338 masklen2ip(masklen, &mask);
1339 return (masklen != IPV4_MAX_PREFIXLEN - 1) ?
1340 /* normal case */
1341 (hostaddr | ~mask.s_addr)
1342 :
1343 /* special case for /31 */
1344 (hostaddr ^ ~mask.s_addr);
3fb9cd6e 1345}
1346
d62a17ae 1347/* Utility function to convert ipv4 netmask to prefixes
718e3744 1348 ex.) "1.1.0.0" "255.255.0.0" => "1.1.0.0/16"
1349 ex.) "1.0.0.0" NULL => "1.0.0.0/8" */
d62a17ae 1350int netmask_str2prefix_str(const char *net_str, const char *mask_str,
1351 char *prefix_str)
718e3744 1352{
d62a17ae 1353 struct in_addr network;
1354 struct in_addr mask;
d7c0a89a
QY		 1355 uint8_t prefixlen;
1356 uint32_t destination;
d62a17ae 1357 int ret;
1358
1359 ret = inet_aton(net_str, &network);
1360 if (!ret)
1361 return 0;
1362
1363 if (mask_str) {
1364 ret = inet_aton(mask_str, &mask);
1365 if (!ret)
1366 return 0;
1367
1368 prefixlen = ip_masklen(mask);
1369 } else {
1370 destination = ntohl(network.s_addr);
1371
1372 if (network.s_addr == 0)
1373 prefixlen = 0;
1374 else if (IN_CLASSC(destination))
1375 prefixlen = 24;
1376 else if (IN_CLASSB(destination))
1377 prefixlen = 16;
1378 else if (IN_CLASSA(destination))
1379 prefixlen = 8;
1380 else
1381 return 0;
1382 }
718e3744 1383
d62a17ae 1384 sprintf(prefix_str, "%s/%d", net_str, prefixlen);
718e3744 1385
d62a17ae 1386 return 1;
718e3744 1387}
1388
5920990f 1389/* Utility function for making IPv6 address string. */
d62a17ae 1390const char *inet6_ntoa(struct in6_addr addr)
5920990f 1391{
d62a17ae 1392 static char buf[INET6_ADDRSTRLEN];
5920990f 1393
d62a17ae 1394 inet_ntop(AF_INET6, &addr, buf, INET6_ADDRSTRLEN);
1395 return buf;
5920990f 1396}
c215ecaf 1397
c215ecaf 1398/* converts to internal representation of mac address
d62a17ae 1399 * returns 1 on success, 0 otherwise
c215ecaf
PG		 1400 * format accepted: AA:BB:CC:DD:EE:FF
1401 * if mac parameter is null, then check only
1402 */
db42a173 1403int prefix_str2mac(const char *str, struct ethaddr *mac)
c215ecaf 1404{
d62a17ae 1405 unsigned int a[6];
1406 int i;
1407
1408 if (!str)
1409 return 0;
1410
1411 if (sscanf(str, "%2x:%2x:%2x:%2x:%2x:%2x", a + 0, a + 1, a + 2, a + 3,
1412 a + 4, a + 5)
1413 != 6) {
1414 /* error in incoming str length */
1415 return 0;
1416 }
1417 /* valid mac address */
1418 if (!mac)
1419 return 1;
1420 for (i = 0; i < 6; ++i)
1421 mac->octet[i] = a[i] & 0xff;
1422 return 1;
c215ecaf
PG		 1423}
1424
db42a173 1425char *prefix_mac2str(const struct ethaddr *mac, char *buf, int size)
c215ecaf 1426{
d62a17ae 1427 char *ptr;
1428
1429 if (!mac)
1430 return NULL;
1431 if (!buf)
1432 ptr = (char *)XMALLOC(MTYPE_TMP,
1433 ETHER_ADDR_STRLEN * sizeof(char));
1434 else {
1435 assert(size >= ETHER_ADDR_STRLEN);
1436 ptr = buf;
1437 }
1438 snprintf(ptr, (ETHER_ADDR_STRLEN), "%02x:%02x:%02x:%02x:%02x:%02x",
1439 (uint8_t)mac->octet[0], (uint8_t)mac->octet[1],
1440 (uint8_t)mac->octet[2], (uint8_t)mac->octet[3],
1441 (uint8_t)mac->octet[4], (uint8_t)mac->octet[5]);
1442 return ptr;
c215ecaf 1443}
7a7761d2
CF		 1444
1445unsigned prefix_hash_key(void *pp)
1446{
1447 struct prefix copy;
1448
9a14899b
PG		 1449 if (((struct prefix *)pp)->family == AF_FLOWSPEC) {
1450 uint32_t len;
1451 void *temp;
1452
1453 /* make sure *all* unused bits are zero,
1454 * particularly including alignment /
1455 * padding and unused prefix bytes.
1456 */
1457 memset(&copy, 0, sizeof(copy));
1458 prefix_copy(&copy, (struct prefix *)pp);
1459 len = jhash((void *)copy.u.prefix_flowspec.ptr,
1460 copy.u.prefix_flowspec.prefixlen,
1461 0x55aa5a5a);
1462 temp = (void *)copy.u.prefix_flowspec.ptr;
1463 XFREE(MTYPE_PREFIX_FLOWSPEC, temp);
1464 copy.u.prefix_flowspec.ptr = (uintptr_t)NULL;
1465 return len;
1466 }
7a7761d2
CF		 1467 /* make sure *all* unused bits are zero, particularly including
1468 * alignment /
1469 * padding and unused prefix bytes. */
1470 memset(&copy, 0, sizeof(copy));
1471 prefix_copy(&copy, (struct prefix *)pp);
996c9314
LB		 1472 return jhash(&copy,
1473 offsetof(struct prefix, u.prefix) + PSIZE(copy.prefixlen),
1474 0x55aa5a5a);
7a7761d2 1475}
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