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Merge pull request #2125 from qlyoung/fix-gcc-build-command-graph
[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
db2fde34
PZ		 470const char *family2str(int family)
471{
472 switch (family) {
473 case AF_INET:
474 return "IPv4";
475 case AF_INET6:
476 return "IPv6";
477 case AF_ETHERNET:
478 return "Ethernet";
479 case AF_EVPN:
480 return "Evpn";
481 }
482 return "?";
483}
484
718e3744 485/* Address Famiy Identifier to Address Family converter. */
d62a17ae 486int afi2family(afi_t afi)
718e3744 487{
d62a17ae 488 if (afi == AFI_IP)
489 return AF_INET;
490 else if (afi == AFI_IP6)
491 return AF_INET6;
492 else if (afi == AFI_L2VPN)
493 return AF_ETHERNET;
b03b8898 494 /* NOTE: EVPN code should NOT use this interface. */
d62a17ae 495 return 0;
718e3744 496}
497
d62a17ae 498afi_t family2afi(int family)
718e3744 499{
d62a17ae 500 if (family == AF_INET)
501 return AFI_IP;
502 else if (family == AF_INET6)
503 return AFI_IP6;
b03b8898 504 else if (family == AF_ETHERNET || family == AF_EVPN)
d62a17ae 505 return AFI_L2VPN;
506 return 0;
718e3744 507}
508
d62a17ae 509const char *afi2str(afi_t afi)
32ac65d9 510{
d62a17ae 511 switch (afi) {
512 case AFI_IP:
513 return "IPv4";
514 case AFI_IP6:
515 return "IPv6";
516 case AFI_L2VPN:
517 return "l2vpn";
518 case AFI_MAX:
519 return "bad-value";
520 default:
521 break;
522 }
523 return NULL;
32ac65d9
LB		 524}
525
d62a17ae 526const char *safi2str(safi_t safi)
1ec23d90 527{
d62a17ae 528 switch (safi) {
529 case SAFI_UNICAST:
530 return "unicast";
531 case SAFI_MULTICAST:
532 return "multicast";
533 case SAFI_MPLS_VPN:
534 return "vpn";
535 case SAFI_ENCAP:
536 return "encap";
537 case SAFI_EVPN:
538 return "evpn";
539 case SAFI_LABELED_UNICAST:
540 return "labeled-unicast";
7c40bf39 541 case SAFI_FLOWSPEC:
542 return "flowspec";
5c525538
RW		 543 default:
544 return "unknown";
d62a17ae 545 }
1ec23d90
LB		 546}
547
718e3744 548/* If n includes p prefix then return 1 else return 0. */
d62a17ae 549int prefix_match(const struct prefix *n, const struct prefix *p)
718e3744 550{
d62a17ae 551 int offset;
552 int shift;
d7c0a89a 553 const uint8_t *np, *pp;
d62a17ae 554
555 /* If n's prefix is longer than p's one return 0. */
556 if (n->prefixlen > p->prefixlen)
557 return 0;
558
9a14899b
PG		 559 if (n->family == AF_FLOWSPEC) {
560 /* prefixlen is unused. look at fs prefix len */
561 if (n->u.prefix_flowspec.prefixlen >
562 p->u.prefix_flowspec.prefixlen)
563 return 0;
564
565 /* Set both prefix's head pointer. */
566 np = (const uint8_t *)&n->u.prefix_flowspec.ptr;
567 pp = (const uint8_t *)&p->u.prefix_flowspec.ptr;
568
569 offset = n->u.prefix_flowspec.prefixlen;
570
571 while (offset--)
572 if (np[offset] != pp[offset])
573 return 0;
574 return 1;
575 }
576
d62a17ae 577 /* Set both prefix's head pointer. */
d7c0a89a
QY		 578 np = (const uint8_t *)&n->u.prefix;
579 pp = (const uint8_t *)&p->u.prefix;
d62a17ae 580
581 offset = n->prefixlen / PNBBY;
582 shift = n->prefixlen % PNBBY;
583
584 if (shift)
585 if (maskbit[shift] & (np[offset] ^ pp[offset]))
586 return 0;
587
588 while (offset--)
589 if (np[offset] != pp[offset])
590 return 0;
591 return 1;
3bec29ac
DS		 592}
593
594/* If n includes p then return 1 else return 0. Prefix mask is not considered */
d62a17ae 595int prefix_match_network_statement(const struct prefix *n,
596 const struct prefix *p)
3bec29ac 597{
d62a17ae 598 int offset;
599 int shift;
d7c0a89a 600 const uint8_t *np, *pp;
3bec29ac 601
d62a17ae 602 /* Set both prefix's head pointer. */
d7c0a89a
QY		 603 np = (const uint8_t *)&n->u.prefix;
604 pp = (const uint8_t *)&p->u.prefix;
3bec29ac 605
d62a17ae 606 offset = n->prefixlen / PNBBY;
607 shift = n->prefixlen % PNBBY;
3bec29ac 608
d62a17ae 609 if (shift)
610 if (maskbit[shift] & (np[offset] ^ pp[offset]))
611 return 0;
3bec29ac 612
d62a17ae 613 while (offset--)
614 if (np[offset] != pp[offset])
615 return 0;
616 return 1;
718e3744 617}
618
d62a17ae 619void prefix_copy(struct prefix *dest, const struct prefix *src)
718e3744 620{
d62a17ae 621 dest->family = src->family;
622 dest->prefixlen = src->prefixlen;
623
624 if (src->family == AF_INET)
625 dest->u.prefix4 = src->u.prefix4;
626 else if (src->family == AF_INET6)
627 dest->u.prefix6 = src->u.prefix6;
628 else if (src->family == AF_ETHERNET) {
b03b8898
DS		 629 memcpy(&dest->u.prefix_eth, &src->u.prefix_eth,
630 sizeof(struct ethaddr));
631 } else if (src->family == AF_EVPN) {
d62a17ae 632 memcpy(&dest->u.prefix_evpn, &src->u.prefix_evpn,
633 sizeof(struct evpn_addr));
634 } else if (src->family == AF_UNSPEC) {
635 dest->u.lp.id = src->u.lp.id;
636 dest->u.lp.adv_router = src->u.lp.adv_router;
9a14899b
PG		 637 } else if (src->family == AF_FLOWSPEC) {
638 void *temp;
639 int len;
640
641 len = src->u.prefix_flowspec.prefixlen;
642 dest->u.prefix_flowspec.prefixlen =
643 src->u.prefix_flowspec.prefixlen;
644 dest->family = src->family;
645 temp = XCALLOC(MTYPE_PREFIX_FLOWSPEC, len);
646 dest->u.prefix_flowspec.ptr = (uintptr_t)temp;
647 memcpy((void *)dest->u.prefix_flowspec.ptr,
648 (void *)src->u.prefix_flowspec.ptr, len);
d62a17ae 649 } else {
650 zlog_err("prefix_copy(): Unknown address family %d",
651 src->family);
652 assert(0);
653 }
718e3744 654}
655
d62a17ae 656/*
9d24baaa 657 * Return 1 if the address/netmask contained in the prefix structure
658 * is the same, and else return 0. For this routine, 'same' requires
659 * that not only the prefix length and the network part be the same,
660 * but also the host part. Thus, 10.0.0.1/8 and 10.0.0.2/8 are not
661 * the same. Note that this routine has the same return value sense
662 * as '==' (which is different from prefix_cmp).
663 */
d62a17ae 664int prefix_same(const struct prefix *p1, const struct prefix *p2)
718e3744 665{
d62a17ae 666 if ((p1 && !p2) || (!p1 && p2))
667 return 0;
668
669 if (!p1 && !p2)
670 return 1;
671
672 if (p1->family == p2->family && p1->prefixlen == p2->prefixlen) {
673 if (p1->family == AF_INET)
19aad877 674 if (IPV4_ADDR_SAME(&p1->u.prefix4, &p2->u.prefix4))
d62a17ae 675 return 1;
676 if (p1->family == AF_INET6)
677 if (IPV6_ADDR_SAME(&p1->u.prefix6.s6_addr,
678 &p2->u.prefix6.s6_addr))
679 return 1;
680 if (p1->family == AF_ETHERNET)
b03b8898
DS		 681 if (!memcmp(&p1->u.prefix_eth, &p2->u.prefix_eth,
682 sizeof(struct ethaddr)))
683 return 1;
684 if (p1->family == AF_EVPN)
d62a17ae 685 if (!memcmp(&p1->u.prefix_evpn, &p2->u.prefix_evpn,
686 sizeof(struct evpn_addr)))
687 return 1;
9a14899b
PG		 688 if (p1->family == AF_FLOWSPEC) {
689 if (p1->u.prefix_flowspec.prefixlen !=
690 p2->u.prefix_flowspec.prefixlen)
691 return 0;
692 if (!memcmp(&p1->u.prefix_flowspec.ptr,
693 &p2->u.prefix_flowspec.ptr,
694 p2->u.prefix_flowspec.prefixlen))
695 return 1;
696 }
d62a17ae 697 }
698 return 0;
718e3744 699}
700
9d24baaa 701/*
702 * Return 0 if the network prefixes represented by the struct prefix
703 * arguments are the same prefix, and 1 otherwise. Network prefixes
704 * are considered the same if the prefix lengths are equal and the
705 * network parts are the same. Host bits (which are considered masked
706 * by the prefix length) are not significant. Thus, 10.0.0.1/8 and
707 * 10.0.0.2/8 are considered equivalent by this routine. Note that
708 * this routine has the same return sense as strcmp (which is different
709 * from prefix_same).
710 */
d62a17ae 711int prefix_cmp(const struct prefix *p1, const struct prefix *p2)
718e3744 712{
d62a17ae 713 int offset;
714 int shift;
718e3744 715
d62a17ae 716 /* Set both prefix's head pointer. */
9a14899b
PG		 717 const uint8_t *pp1;
718 const uint8_t *pp2;
718e3744 719
9a14899b 720 if (p1->family != p2->family)
d62a17ae 721 return 1;
9a14899b
PG		 722 if (p1->family == AF_FLOWSPEC) {
723 pp1 = (const uint8_t *)p1->u.prefix_flowspec.ptr;
724 pp2 = (const uint8_t *)p2->u.prefix_flowspec.ptr;
718e3744 725
9a14899b
PG		 726 if (p1->u.prefix_flowspec.prefixlen !=
727 p2->u.prefix_flowspec.prefixlen)
728 return 1;
729
730 offset = p1->u.prefix_flowspec.prefixlen;
731 while (offset--)
732 if (pp1[offset] != pp2[offset])
733 return 1;
734 return 0;
735 }
736 pp1 = (const uint8_t *)&p1->u.prefix;
737 pp2 = (const uint8_t *)&p2->u.prefix;
738
739 if (p1->prefixlen != p2->prefixlen)
740 return 1;
d62a17ae 741 offset = p1->prefixlen / PNBBY;
742 shift = p1->prefixlen % PNBBY;
718e3744 743
d62a17ae 744 if (shift)
745 if (maskbit[shift] & (pp1[offset] ^ pp2[offset]))
746 return 1;
718e3744 747
d62a17ae 748 while (offset--)
749 if (pp1[offset] != pp2[offset])
750 return 1;
718e3744 751
d62a17ae 752 return 0;
718e3744 753}
754
17e52061
DL		 755/*
756 * Count the number of common bits in 2 prefixes. The prefix length is
757 * ignored for this function; the whole prefix is compared. If the prefix
758 * address families don't match, return -1; otherwise the return value is
759 * in range 0 ... maximum prefix length for the address family.
760 */
d62a17ae 761int prefix_common_bits(const struct prefix *p1, const struct prefix *p2)
17e52061 762{
d62a17ae 763 int pos, bit;
764 int length = 0;
d7c0a89a 765 uint8_t xor ;
d62a17ae 766
767 /* Set both prefix's head pointer. */
d7c0a89a
QY		 768 const uint8_t *pp1 = (const uint8_t *)&p1->u.prefix;
769 const uint8_t *pp2 = (const uint8_t *)&p2->u.prefix;
d62a17ae 770
771 if (p1->family == AF_INET)
772 length = IPV4_MAX_BYTELEN;
773 if (p1->family == AF_INET6)
774 length = IPV6_MAX_BYTELEN;
775 if (p1->family == AF_ETHERNET)
b03b8898
DS		 776 length = ETH_ALEN;
777 if (p1->family == AF_EVPN)
d62a17ae 778 length = 8 * sizeof(struct evpn_addr);
779
780 if (p1->family != p2->family || !length)
781 return -1;
782
783 for (pos = 0; pos < length; pos++)
784 if (pp1[pos] != pp2[pos])
785 break;
786 if (pos == length)
787 return pos * 8;
788
789 xor = pp1[pos] ^ pp2[pos];
790 for (bit = 0; bit < 8; bit++)
791 if (xor&(1 << (7 - bit)))
792 break;
793
794 return pos * 8 + bit;
17e52061
DL		 795}
796
718e3744 797/* Return prefix family type string. */
d62a17ae 798const char *prefix_family_str(const struct prefix *p)
718e3744 799{
d62a17ae 800 if (p->family == AF_INET)
801 return "inet";
802 if (p->family == AF_INET6)
803 return "inet6";
804 if (p->family == AF_ETHERNET)
805 return "ether";
b03b8898
DS		 806 if (p->family == AF_EVPN)
807 return "evpn";
d62a17ae 808 return "unspec";
718e3744 809}
810
811/* Allocate new prefix_ipv4 structure. */
d62a17ae 812struct prefix_ipv4 *prefix_ipv4_new()
718e3744 813{
d62a17ae 814 struct prefix_ipv4 *p;
815
816 /* Call prefix_new to allocate a full-size struct prefix to avoid
817 problems
818 where the struct prefix_ipv4 is cast to struct prefix and unallocated
819 bytes were being referenced (e.g. in structure assignments). */
820 p = (struct prefix_ipv4 *)prefix_new();
821 p->family = AF_INET;
822 return p;
718e3744 823}
824
825/* Free prefix_ipv4 structure. */
d62a17ae 826void prefix_ipv4_free(struct prefix_ipv4 *p)
718e3744 827{
d62a17ae 828 prefix_free((struct prefix *)p);
718e3744 829}
830
831/* When string format is invalid return 0. */
d62a17ae 832int str2prefix_ipv4(const char *str, struct prefix_ipv4 *p)
718e3744 833{
d62a17ae 834 int ret;
835 int plen;
836 char *pnt;
837 char *cp;
838
839 /* Find slash inside string. */
840 pnt = strchr(str, '/');
841
842 /* String doesn't contail slash. */
843 if (pnt == NULL) {
844 /* Convert string to prefix. */
845 ret = inet_aton(str, &p->prefix);
846 if (ret == 0)
847 return 0;
848
849 /* If address doesn't contain slash we assume it host address.
850 */
851 p->family = AF_INET;
852 p->prefixlen = IPV4_MAX_BITLEN;
853
854 return ret;
855 } else {
856 cp = XMALLOC(MTYPE_TMP, (pnt - str) + 1);
857 strncpy(cp, str, pnt - str);
858 *(cp + (pnt - str)) = '\0';
859 ret = inet_aton(cp, &p->prefix);
860 XFREE(MTYPE_TMP, cp);
861
862 /* Get prefix length. */
d7c0a89a 863 plen = (uint8_t)atoi(++pnt);
d62a17ae 864 if (plen > IPV4_MAX_PREFIXLEN)
865 return 0;
866
867 p->family = AF_INET;
868 p->prefixlen = plen;
869 }
718e3744 870
d62a17ae 871 return ret;
718e3744 872}
873
32ac65d9 874/* When string format is invalid return 0. */
d62a17ae 875int str2prefix_eth(const char *str, struct prefix_eth *p)
32ac65d9 876{
d62a17ae 877 int ret = 0;
878 int plen = 48;
879 char *pnt;
880 char *cp = NULL;
881 const char *str_addr = str;
882 unsigned int a[6];
883 int i;
0f6476cc 884 bool slash = false;
d62a17ae 885
3b0f6068
DL		 886 if (!strcmp(str, "any")) {
887 memset(p, 0, sizeof(*p));
888 p->family = AF_ETHERNET;
889 return 1;
890 }
891
d62a17ae 892 /* Find slash inside string. */
893 pnt = strchr(str, '/');
894
895 if (pnt) {
896 /* Get prefix length. */
d7c0a89a 897 plen = (uint8_t)atoi(++pnt);
d62a17ae 898 if (plen > 48) {
899 ret = 0;
900 goto done;
901 }
902
903 cp = XMALLOC(MTYPE_TMP, (pnt - str) + 1);
904 strncpy(cp, str, pnt - str);
905 *(cp + (pnt - str)) = '\0';
906
907 str_addr = cp;
0f6476cc 908 slash = true;
32ac65d9
LB		 909 }
910
d62a17ae 911 /* Convert string to prefix. */
912 if (sscanf(str_addr, "%2x:%2x:%2x:%2x:%2x:%2x", a + 0, a + 1, a + 2,
913 a + 3, a + 4, a + 5)
914 != 6) {
915 ret = 0;
916 goto done;
917 }
918 for (i = 0; i < 6; ++i) {
919 p->eth_addr.octet[i] = a[i] & 0xff;
920 }
921 p->prefixlen = plen;
922 p->family = AF_ETHERNET;
0f6476cc
DS		 923
924 /*
925 * special case to allow old configurations to work
926 * Since all zero's is implicitly meant to allow
927 * a comparison to zero, let's assume
928 */
929 if (!slash && is_zero_mac(&(p->eth_addr)))
996c9314 930 p->prefixlen = 0;
0f6476cc 931
d62a17ae 932 ret = 1;
32ac65d9
LB		 933
934done:
d62a17ae 935 if (cp)
936 XFREE(MTYPE_TMP, cp);
32ac65d9 937
d62a17ae 938 return ret;
32ac65d9
LB		 939}
940
051954f5 941/* Convert masklen into IP address's netmask (network byte order). */
d62a17ae 942void masklen2ip(const int masklen, struct in_addr *netmask)
718e3744 943{
d62a17ae 944 assert(masklen >= 0 && masklen <= IPV4_MAX_BITLEN);
e96b3121 945
d62a17ae 946 /* left shift is only defined for less than the size of the type.
947 * we unconditionally use long long in case the target platform
948 * has defined behaviour for << 32 (or has a 64-bit left shift) */
e96b3121 949
d62a17ae 950 if (sizeof(unsigned long long) > 4)
951 netmask->s_addr = htonl(0xffffffffULL << (32 - masklen));
952 else
953 netmask->s_addr =
954 htonl(masklen ? 0xffffffffU << (32 - masklen) : 0);
718e3744 955}
956
957/* Convert IP address's netmask into integer. We assume netmask is
958 sequential one. Argument netmask should be network byte order. */
d7c0a89a 959uint8_t ip_masklen(struct in_addr netmask)
718e3744 960{
d62a17ae 961 uint32_t tmp = ~ntohl(netmask.s_addr);
962 if (tmp)
963 /* clz: count leading zeroes. sadly, the behaviour of this
964 * builtin
965 * is undefined for a 0 argument, even though most CPUs give 32
966 */
967 return __builtin_clz(tmp);
968 else
969 return 32;
718e3744 970}
971
caff7905 972/* Apply mask to IPv4 prefix (network byte order). */
d62a17ae 973void apply_mask_ipv4(struct prefix_ipv4 *p)
718e3744 974{
d62a17ae 975 struct in_addr mask;
976 masklen2ip(p->prefixlen, &mask);
977 p->prefix.s_addr &= mask.s_addr;
718e3744 978}
979
980/* If prefix is 0.0.0.0/0 then return 1 else return 0. */
d62a17ae 981int prefix_ipv4_any(const struct prefix_ipv4 *p)
718e3744 982{
d62a17ae 983 return (p->prefix.s_addr == 0 && p->prefixlen == 0);
718e3744 984}
6b0655a2 985
718e3744 986/* Allocate a new ip version 6 route */
d62a17ae 987struct prefix_ipv6 *prefix_ipv6_new(void)
718e3744 988{
d62a17ae 989 struct prefix_ipv6 *p;
718e3744 990
d62a17ae 991 /* Allocate a full-size struct prefix to avoid problems with structure
992 size mismatches. */
993 p = (struct prefix_ipv6 *)prefix_new();
994 p->family = AF_INET6;
995 return p;
718e3744 996}
997
998/* Free prefix for IPv6. */
d62a17ae 999void prefix_ipv6_free(struct prefix_ipv6 *p)
718e3744 1000{
d62a17ae 1001 prefix_free((struct prefix *)p);
718e3744 1002}
1003
1004/* If given string is valid return pin6 else return NULL */
d62a17ae 1005int str2prefix_ipv6(const char *str, struct prefix_ipv6 *p)
718e3744 1006{
d62a17ae 1007 char *pnt;
1008 char *cp;
1009 int ret;
1010
1011 pnt = strchr(str, '/');
1012
1013 /* If string doesn't contain `/' treat it as host route. */
1014 if (pnt == NULL) {
1015 ret = inet_pton(AF_INET6, str, &p->prefix);
1016 if (ret == 0)
1017 return 0;
1018 p->prefixlen = IPV6_MAX_BITLEN;
1019 } else {
1020 int plen;
1021
1022 cp = XMALLOC(MTYPE_TMP, (pnt - str) + 1);
1023 strncpy(cp, str, pnt - str);
1024 *(cp + (pnt - str)) = '\0';
1025 ret = inet_pton(AF_INET6, cp, &p->prefix);
1026 XFREE(MTYPE_TMP, cp);
1027 if (ret == 0)
1028 return 0;
d7c0a89a 1029 plen = (uint8_t)atoi(++pnt);
d62a17ae 1030 if (plen > IPV6_MAX_BITLEN)
1031 return 0;
1032 p->prefixlen = plen;
1033 }
1034 p->family = AF_INET6;
718e3744 1035
d62a17ae 1036 return ret;
718e3744 1037}
1038
b04c699e 1039/* Convert struct in6_addr netmask into integer.
d7c0a89a 1040 * FIXME return uint8_t as ip_maskleni() does. */
d62a17ae 1041int ip6_masklen(struct in6_addr netmask)
718e3744 1042{
d62a17ae 1043 int len = 0;
1044 unsigned char val;
1045 unsigned char *pnt;
1046
1047 pnt = (unsigned char *)&netmask;
1048
1049 while ((*pnt == 0xff) && len < IPV6_MAX_BITLEN) {
1050 len += 8;
1051 pnt++;
718e3744 1052 }
d62a17ae 1053
1054 if (len < IPV6_MAX_BITLEN) {
1055 val = *pnt;
1056 while (val) {
1057 len++;
1058 val <<= 1;
1059 }
1060 }
1061 return len;
718e3744 1062}
1063
d62a17ae 1064void masklen2ip6(const int masklen, struct in6_addr *netmask)
718e3744 1065{
d62a17ae 1066 assert(masklen >= 0 && masklen <= IPV6_MAX_BITLEN);
1067 memcpy(netmask, maskbytes6 + masklen, sizeof(struct in6_addr));
718e3744 1068}
1069
d62a17ae 1070void apply_mask_ipv6(struct prefix_ipv6 *p)
718e3744 1071{
d7c0a89a 1072 uint8_t *pnt;
d62a17ae 1073 int index;
1074 int offset;
8c7f49d2 1075
d62a17ae 1076 index = p->prefixlen / 8;
8c7f49d2 1077
d62a17ae 1078 if (index < 16) {
d7c0a89a 1079 pnt = (uint8_t *)&p->prefix;
d62a17ae 1080 offset = p->prefixlen % 8;
8c7f49d2 1081
d62a17ae 1082 pnt[index] &= maskbit[offset];
1083 index++;
8c7f49d2 1084
d62a17ae 1085 while (index < 16)
1086 pnt[index++] = 0;
1087 }
718e3744 1088}
1089
d62a17ae 1090void apply_mask(struct prefix *p)
718e3744 1091{
d62a17ae 1092 switch (p->family) {
1093 case AF_INET:
1094 apply_mask_ipv4((struct prefix_ipv4 *)p);
1095 break;
1096 case AF_INET6:
1097 apply_mask_ipv6((struct prefix_ipv6 *)p);
1098 break;
1099 default:
1100 break;
1101 }
1102 return;
718e3744 1103}
1104
b04c699e 1105/* Utility function of convert between struct prefix <=> union sockunion.
1106 * FIXME This function isn't used anywhere. */
d62a17ae 1107struct prefix *sockunion2prefix(const union sockunion *dest,
1108 const union sockunion *mask)
718e3744 1109{
d62a17ae 1110 if (dest->sa.sa_family == AF_INET) {
1111 struct prefix_ipv4 *p;
1112
1113 p = prefix_ipv4_new();
1114 p->family = AF_INET;
1115 p->prefix = dest->sin.sin_addr;
1116 p->prefixlen = ip_masklen(mask->sin.sin_addr);
1117 return (struct prefix *)p;
1118 }
1119 if (dest->sa.sa_family == AF_INET6) {
1120 struct prefix_ipv6 *p;
1121
1122 p = prefix_ipv6_new();
1123 p->family = AF_INET6;
1124 p->prefixlen = ip6_masklen(mask->sin6.sin6_addr);
1125 memcpy(&p->prefix, &dest->sin6.sin6_addr,
1126 sizeof(struct in6_addr));
1127 return (struct prefix *)p;
1128 }
1129 return NULL;
718e3744 1130}
1131
b04c699e 1132/* Utility function of convert between struct prefix <=> union sockunion. */
d62a17ae 1133struct prefix *sockunion2hostprefix(const union sockunion *su,
1134 struct prefix *prefix)
718e3744 1135{
d62a17ae 1136 if (su->sa.sa_family == AF_INET) {
1137 struct prefix_ipv4 *p;
1138
1139 p = prefix ? (struct prefix_ipv4 *)prefix : prefix_ipv4_new();
1140 p->family = AF_INET;
1141 p->prefix = su->sin.sin_addr;
1142 p->prefixlen = IPV4_MAX_BITLEN;
1143 return (struct prefix *)p;
1144 }
1145 if (su->sa.sa_family == AF_INET6) {
1146 struct prefix_ipv6 *p;
1147
1148 p = prefix ? (struct prefix_ipv6 *)prefix : prefix_ipv6_new();
1149 p->family = AF_INET6;
1150 p->prefixlen = IPV6_MAX_BITLEN;
1151 memcpy(&p->prefix, &su->sin6.sin6_addr,
1152 sizeof(struct in6_addr));
1153 return (struct prefix *)p;
1154 }
1155 return NULL;
718e3744 1156}
1157
d62a17ae 1158void prefix2sockunion(const struct prefix *p, union sockunion *su)
17e52061 1159{
d62a17ae 1160 memset(su, 0, sizeof(*su));
1161
1162 su->sa.sa_family = p->family;
1163 if (p->family == AF_INET)
1164 su->sin.sin_addr = p->u.prefix4;
1165 if (p->family == AF_INET6)
1166 memcpy(&su->sin6.sin6_addr, &p->u.prefix6,
1167 sizeof(struct in6_addr));
17e52061
DL		 1168}
1169
d62a17ae 1170int prefix_blen(const struct prefix *p)
718e3744 1171{
d62a17ae 1172 switch (p->family) {
1173 case AF_INET:
1174 return IPV4_MAX_BYTELEN;
1175 break;
1176 case AF_INET6:
1177 return IPV6_MAX_BYTELEN;
1178 break;
1179 case AF_ETHERNET:
7628d862 1180 return ETH_ALEN;
b03b8898 1181 break;
d62a17ae 1182 }
1183 return 0;
718e3744 1184}
1185
1186/* Generic function for conversion string to struct prefix. */
d62a17ae 1187int str2prefix(const char *str, struct prefix *p)
718e3744 1188{
d62a17ae 1189 int ret;
718e3744 1190
d62a17ae 1191 /* First we try to convert string to struct prefix_ipv4. */
1192 ret = str2prefix_ipv4(str, (struct prefix_ipv4 *)p);
1193 if (ret)
1194 return ret;
718e3744 1195
d62a17ae 1196 /* Next we try to convert string to struct prefix_ipv6. */
1197 ret = str2prefix_ipv6(str, (struct prefix_ipv6 *)p);
1198 if (ret)
1199 return ret;
718e3744 1200
d62a17ae 1201 /* Next we try to convert string to struct prefix_eth. */
1202 ret = str2prefix_eth(str, (struct prefix_eth *)p);
1203 if (ret)
1204 return ret;
32ac65d9 1205
d62a17ae 1206 return 0;
718e3744 1207}
1208
b03b8898 1209static const char *prefixevpn2str(const struct prefix *p, char *str, int size)
86f1ef44 1210{
d7c0a89a 1211 uint8_t family;
d62a17ae 1212 char buf[PREFIX2STR_BUFFER];
1213 char buf2[ETHER_ADDR_STRLEN];
1214
1215 if (p->u.prefix_evpn.route_type == 2) {
1216 if (IS_EVPN_PREFIX_IPADDR_NONE((struct prefix_evpn *)p))
1217 snprintf(str, size, "[%d]:[%s]/%d",
1218 p->u.prefix_evpn.route_type,
1219 prefix_mac2str(&p->u.prefix_evpn.mac, buf2,
1220 sizeof(buf2)),
1221 p->prefixlen);
1222 else {
1223 family = IS_EVPN_PREFIX_IPADDR_V4(
1224 (struct prefix_evpn *)p)
1225 ? AF_INET
1226 : AF_INET6;
1227 snprintf(str, size, "[%d]:[%s]:[%s]/%d",
1228 p->u.prefix_evpn.route_type,
1229 prefix_mac2str(&p->u.prefix_evpn.mac, buf2,
1230 sizeof(buf2)),
1231 inet_ntop(family, &p->u.prefix_evpn.ip.ip.addr,
1232 buf, PREFIX2STR_BUFFER),
1233 p->prefixlen);
1234 }
1235 } else if (p->u.prefix_evpn.route_type == 3) {
1236 family = IS_EVPN_PREFIX_IPADDR_V4((struct prefix_evpn *)p)
1237 ? AF_INET
1238 : AF_INET6;
1239 snprintf(str, size, "[%d]:[%s]/%d", p->u.prefix_evpn.route_type,
1240 inet_ntop(family, &p->u.prefix_evpn.ip.ip.addr, buf,
1241 PREFIX2STR_BUFFER),
1242 p->prefixlen);
1243 } else if (p->u.prefix_evpn.route_type == 5) {
1244 family = IS_EVPN_PREFIX_IPADDR_V4((struct prefix_evpn *)p)
1245 ? AF_INET
1246 : AF_INET6;
342dd0c6 1247 snprintf(str, size, "[%d]:[%u][%s/%d]/%d",
d62a17ae 1248 p->u.prefix_evpn.route_type, p->u.prefix_evpn.eth_tag,
1249 inet_ntop(family, &p->u.prefix_evpn.ip.ip.addr, buf,
1250 PREFIX2STR_BUFFER),
996c9314 1251 p->u.prefix_evpn.ip_prefix_length, p->prefixlen);
d62a17ae 1252 } else {
b03b8898 1253 sprintf(str, "Unsupported EVPN route type %d",
996c9314 1254 p->u.prefix_evpn.route_type);
d62a17ae 1255 }
1256
1257 return str;
86f1ef44 1258}
1259
d62a17ae 1260const char *prefix2str(union prefixconstptr pu, char *str, int size)
718e3744 1261{
d62a17ae 1262 const struct prefix *p = pu.p;
1263 char buf[PREFIX2STR_BUFFER];
1264
1265 switch (p->family) {
1266 case AF_INET:
1267 case AF_INET6:
9d303b37
DL		 1268 snprintf(str, size, "%s/%d", inet_ntop(p->family, &p->u.prefix,
1269 buf, PREFIX2STR_BUFFER),
d62a17ae 1270 p->prefixlen);
1271 break;
1272
1273 case AF_ETHERNET:
b03b8898
DS		 1274 snprintf(str, size, "%s/%d",
1275 prefix_mac2str(&p->u.prefix_eth, buf, sizeof(buf)),
1276 p->prefixlen);
1277 break;
1278
1279 case AF_EVPN:
1280 prefixevpn2str(p, str, size);
d62a17ae 1281 break;
1282
9a14899b
PG		 1283 case AF_FLOWSPEC:
1284 sprintf(str, "FS prefix");
1285 break;
1286
d62a17ae 1287 default:
1288 sprintf(str, "UNK prefix");
1289 break;
1290 }
1291
1292 return str;
718e3744 1293}
1294
d62a17ae 1295struct prefix *prefix_new()
718e3744 1296{
d62a17ae 1297 struct prefix *p;
718e3744 1298
d62a17ae 1299 p = XCALLOC(MTYPE_PREFIX, sizeof *p);
1300 return p;
718e3744 1301}
1302
1303/* Free prefix structure. */
d62a17ae 1304void prefix_free(struct prefix *p)
718e3744 1305{
d62a17ae 1306 XFREE(MTYPE_PREFIX, p);
718e3744 1307}
1308
1309/* Utility function. Check the string only contains digit
b04c699e 1310 * character.
1311 * FIXME str.[c|h] would be better place for this function. */
d62a17ae 1312int all_digit(const char *str)
718e3744 1313{
d62a17ae 1314 for (; *str != '\0'; str++)
1315 if (!isdigit((int)*str))
1316 return 0;
1317 return 1;
718e3744 1318}
1319
1320/* Utility function to convert ipv4 prefixes to Classful prefixes */
d62a17ae 1321void apply_classful_mask_ipv4(struct prefix_ipv4 *p)
718e3744 1322{
1323
d7c0a89a 1324 uint32_t destination;
d62a17ae 1325
1326 destination = ntohl(p->prefix.s_addr);
1327
1328 if (p->prefixlen == IPV4_MAX_PREFIXLEN)
1329 ;
1330 /* do nothing for host routes */
1331 else if (IN_CLASSC(destination)) {
1332 p->prefixlen = 24;
1333 apply_mask_ipv4(p);
1334 } else if (IN_CLASSB(destination)) {
1335 p->prefixlen = 16;
1336 apply_mask_ipv4(p);
1337 } else {
1338 p->prefixlen = 8;
1339 apply_mask_ipv4(p);
1340 }
718e3744 1341}
1342
d62a17ae 1343in_addr_t ipv4_network_addr(in_addr_t hostaddr, int masklen)
3fb9cd6e 1344{
d62a17ae 1345 struct in_addr mask;
3fb9cd6e 1346
d62a17ae 1347 masklen2ip(masklen, &mask);
1348 return hostaddr & mask.s_addr;
3fb9cd6e 1349}
1350
d62a17ae 1351in_addr_t ipv4_broadcast_addr(in_addr_t hostaddr, int masklen)
3fb9cd6e 1352{
d62a17ae 1353 struct in_addr mask;
1354
1355 masklen2ip(masklen, &mask);
1356 return (masklen != IPV4_MAX_PREFIXLEN - 1) ?
1357 /* normal case */
1358 (hostaddr | ~mask.s_addr)
1359 :
1360 /* special case for /31 */
1361 (hostaddr ^ ~mask.s_addr);
3fb9cd6e 1362}
1363
d62a17ae 1364/* Utility function to convert ipv4 netmask to prefixes
718e3744 1365 ex.) "1.1.0.0" "255.255.0.0" => "1.1.0.0/16"
1366 ex.) "1.0.0.0" NULL => "1.0.0.0/8" */
d62a17ae 1367int netmask_str2prefix_str(const char *net_str, const char *mask_str,
1368 char *prefix_str)
718e3744 1369{
d62a17ae 1370 struct in_addr network;
1371 struct in_addr mask;
d7c0a89a
QY		 1372 uint8_t prefixlen;
1373 uint32_t destination;
d62a17ae 1374 int ret;
1375
1376 ret = inet_aton(net_str, &network);
1377 if (!ret)
1378 return 0;
1379
1380 if (mask_str) {
1381 ret = inet_aton(mask_str, &mask);
1382 if (!ret)
1383 return 0;
1384
1385 prefixlen = ip_masklen(mask);
1386 } else {
1387 destination = ntohl(network.s_addr);
1388
1389 if (network.s_addr == 0)
1390 prefixlen = 0;
1391 else if (IN_CLASSC(destination))
1392 prefixlen = 24;
1393 else if (IN_CLASSB(destination))
1394 prefixlen = 16;
1395 else if (IN_CLASSA(destination))
1396 prefixlen = 8;
1397 else
1398 return 0;
1399 }
718e3744 1400
d62a17ae 1401 sprintf(prefix_str, "%s/%d", net_str, prefixlen);
718e3744 1402
d62a17ae 1403 return 1;
718e3744 1404}
1405
5920990f 1406/* Utility function for making IPv6 address string. */
d62a17ae 1407const char *inet6_ntoa(struct in6_addr addr)
5920990f 1408{
d62a17ae 1409 static char buf[INET6_ADDRSTRLEN];
5920990f 1410
d62a17ae 1411 inet_ntop(AF_INET6, &addr, buf, INET6_ADDRSTRLEN);
1412 return buf;
5920990f 1413}
c215ecaf 1414
c215ecaf 1415/* converts to internal representation of mac address
d62a17ae 1416 * returns 1 on success, 0 otherwise
c215ecaf
PG		 1417 * format accepted: AA:BB:CC:DD:EE:FF
1418 * if mac parameter is null, then check only
1419 */
db42a173 1420int prefix_str2mac(const char *str, struct ethaddr *mac)
c215ecaf 1421{
d62a17ae 1422 unsigned int a[6];
1423 int i;
1424
1425 if (!str)
1426 return 0;
1427
1428 if (sscanf(str, "%2x:%2x:%2x:%2x:%2x:%2x", a + 0, a + 1, a + 2, a + 3,
1429 a + 4, a + 5)
1430 != 6) {
1431 /* error in incoming str length */
1432 return 0;
1433 }
1434 /* valid mac address */
1435 if (!mac)
1436 return 1;
1437 for (i = 0; i < 6; ++i)
1438 mac->octet[i] = a[i] & 0xff;
1439 return 1;
c215ecaf
PG		 1440}
1441
db42a173 1442char *prefix_mac2str(const struct ethaddr *mac, char *buf, int size)
c215ecaf 1443{
d62a17ae 1444 char *ptr;
1445
1446 if (!mac)
1447 return NULL;
1448 if (!buf)
1449 ptr = (char *)XMALLOC(MTYPE_TMP,
1450 ETHER_ADDR_STRLEN * sizeof(char));
1451 else {
1452 assert(size >= ETHER_ADDR_STRLEN);
1453 ptr = buf;
1454 }
1455 snprintf(ptr, (ETHER_ADDR_STRLEN), "%02x:%02x:%02x:%02x:%02x:%02x",
1456 (uint8_t)mac->octet[0], (uint8_t)mac->octet[1],
1457 (uint8_t)mac->octet[2], (uint8_t)mac->octet[3],
1458 (uint8_t)mac->octet[4], (uint8_t)mac->octet[5]);
1459 return ptr;
c215ecaf 1460}
7a7761d2
CF		 1461
1462unsigned prefix_hash_key(void *pp)
1463{
1464 struct prefix copy;
1465
9a14899b
PG		 1466 if (((struct prefix *)pp)->family == AF_FLOWSPEC) {
1467 uint32_t len;
1468 void *temp;
1469
1470 /* make sure *all* unused bits are zero,
1471 * particularly including alignment /
1472 * padding and unused prefix bytes.
1473 */
1474 memset(&copy, 0, sizeof(copy));
1475 prefix_copy(&copy, (struct prefix *)pp);
1476 len = jhash((void *)copy.u.prefix_flowspec.ptr,
1477 copy.u.prefix_flowspec.prefixlen,
1478 0x55aa5a5a);
1479 temp = (void *)copy.u.prefix_flowspec.ptr;
1480 XFREE(MTYPE_PREFIX_FLOWSPEC, temp);
1481 copy.u.prefix_flowspec.ptr = (uintptr_t)NULL;
1482 return len;
1483 }
7a7761d2
CF		 1484 /* make sure *all* unused bits are zero, particularly including
1485 * alignment /
1486 * padding and unused prefix bytes. */
1487 memset(&copy, 0, sizeof(copy));
1488 prefix_copy(&copy, (struct prefix *)pp);
996c9314
LB		 1489 return jhash(&copy,
1490 offsetof(struct prefix, u.prefix) + PSIZE(copy.prefixlen),
1491 0x55aa5a5a);
7a7761d2 1492}
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