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Commit | Line | Data |
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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 |
31 | DEFINE_MTYPE_STATIC(LIB, PREFIX, "Prefix") |
32 | ||
718e3744 | 33 | /* Maskbit. */ |
d7c0a89a QY |
34 | static const uint8_t maskbit[] = {0x00, 0x80, 0xc0, 0xe0, 0xf0, |
35 | 0xf8, 0xfc, 0xfe, 0xff}; | |
d62a17ae | 36 | |
37 | static 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 | 432 | int 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 | 444 | unsigned 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 | 452 | unsigned 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 | 457 | int 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 | 471 | int 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 | 483 | afi_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 | 494 | const 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 | 511 | const 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"; | |
7c40bf39 | 526 | case SAFI_FLOWSPEC: |
527 | return "flowspec"; | |
5c525538 RW |
528 | default: |
529 | return "unknown"; | |
d62a17ae | 530 | } |
1ec23d90 LB |
531 | } |
532 | ||
718e3744 | 533 | /* If n includes p prefix then return 1 else return 0. */ |
d62a17ae | 534 | int prefix_match(const struct prefix *n, const struct prefix *p) |
718e3744 | 535 | { |
d62a17ae | 536 | int offset; |
537 | int shift; | |
d7c0a89a | 538 | const uint8_t *np, *pp; |
d62a17ae | 539 | |
540 | /* If n's prefix is longer than p's one return 0. */ | |
541 | if (n->prefixlen > p->prefixlen) | |
542 | return 0; | |
543 | ||
9a14899b PG |
544 | if (n->family == AF_FLOWSPEC) { |
545 | /* prefixlen is unused. look at fs prefix len */ | |
546 | if (n->u.prefix_flowspec.prefixlen > | |
547 | p->u.prefix_flowspec.prefixlen) | |
548 | return 0; | |
549 | ||
550 | /* Set both prefix's head pointer. */ | |
551 | np = (const uint8_t *)&n->u.prefix_flowspec.ptr; | |
552 | pp = (const uint8_t *)&p->u.prefix_flowspec.ptr; | |
553 | ||
554 | offset = n->u.prefix_flowspec.prefixlen; | |
555 | ||
556 | while (offset--) | |
557 | if (np[offset] != pp[offset]) | |
558 | return 0; | |
559 | return 1; | |
560 | } | |
561 | ||
d62a17ae | 562 | /* Set both prefix's head pointer. */ |
d7c0a89a QY |
563 | np = (const uint8_t *)&n->u.prefix; |
564 | pp = (const uint8_t *)&p->u.prefix; | |
d62a17ae | 565 | |
566 | offset = n->prefixlen / PNBBY; | |
567 | shift = n->prefixlen % PNBBY; | |
568 | ||
569 | if (shift) | |
570 | if (maskbit[shift] & (np[offset] ^ pp[offset])) | |
571 | return 0; | |
572 | ||
573 | while (offset--) | |
574 | if (np[offset] != pp[offset]) | |
575 | return 0; | |
576 | return 1; | |
3bec29ac DS |
577 | } |
578 | ||
579 | /* If n includes p then return 1 else return 0. Prefix mask is not considered */ | |
d62a17ae | 580 | int prefix_match_network_statement(const struct prefix *n, |
581 | const struct prefix *p) | |
3bec29ac | 582 | { |
d62a17ae | 583 | int offset; |
584 | int shift; | |
d7c0a89a | 585 | const uint8_t *np, *pp; |
3bec29ac | 586 | |
d62a17ae | 587 | /* Set both prefix's head pointer. */ |
d7c0a89a QY |
588 | np = (const uint8_t *)&n->u.prefix; |
589 | pp = (const uint8_t *)&p->u.prefix; | |
3bec29ac | 590 | |
d62a17ae | 591 | offset = n->prefixlen / PNBBY; |
592 | shift = n->prefixlen % PNBBY; | |
3bec29ac | 593 | |
d62a17ae | 594 | if (shift) |
595 | if (maskbit[shift] & (np[offset] ^ pp[offset])) | |
596 | return 0; | |
3bec29ac | 597 | |
d62a17ae | 598 | while (offset--) |
599 | if (np[offset] != pp[offset]) | |
600 | return 0; | |
601 | return 1; | |
718e3744 | 602 | } |
603 | ||
d62a17ae | 604 | void prefix_copy(struct prefix *dest, const struct prefix *src) |
718e3744 | 605 | { |
d62a17ae | 606 | dest->family = src->family; |
607 | dest->prefixlen = src->prefixlen; | |
608 | ||
609 | if (src->family == AF_INET) | |
610 | dest->u.prefix4 = src->u.prefix4; | |
611 | else if (src->family == AF_INET6) | |
612 | dest->u.prefix6 = src->u.prefix6; | |
613 | else if (src->family == AF_ETHERNET) { | |
b03b8898 DS |
614 | memcpy(&dest->u.prefix_eth, &src->u.prefix_eth, |
615 | sizeof(struct ethaddr)); | |
616 | } else if (src->family == AF_EVPN) { | |
d62a17ae | 617 | memcpy(&dest->u.prefix_evpn, &src->u.prefix_evpn, |
618 | sizeof(struct evpn_addr)); | |
619 | } else if (src->family == AF_UNSPEC) { | |
620 | dest->u.lp.id = src->u.lp.id; | |
621 | dest->u.lp.adv_router = src->u.lp.adv_router; | |
9a14899b PG |
622 | } else if (src->family == AF_FLOWSPEC) { |
623 | void *temp; | |
624 | int len; | |
625 | ||
626 | len = src->u.prefix_flowspec.prefixlen; | |
627 | dest->u.prefix_flowspec.prefixlen = | |
628 | src->u.prefix_flowspec.prefixlen; | |
629 | dest->family = src->family; | |
630 | temp = XCALLOC(MTYPE_PREFIX_FLOWSPEC, len); | |
631 | dest->u.prefix_flowspec.ptr = (uintptr_t)temp; | |
632 | memcpy((void *)dest->u.prefix_flowspec.ptr, | |
633 | (void *)src->u.prefix_flowspec.ptr, len); | |
d62a17ae | 634 | } else { |
635 | zlog_err("prefix_copy(): Unknown address family %d", | |
636 | src->family); | |
637 | assert(0); | |
638 | } | |
718e3744 | 639 | } |
640 | ||
d62a17ae | 641 | /* |
9d24baaa | 642 | * Return 1 if the address/netmask contained in the prefix structure |
643 | * is the same, and else return 0. For this routine, 'same' requires | |
644 | * that not only the prefix length and the network part be the same, | |
645 | * but also the host part. Thus, 10.0.0.1/8 and 10.0.0.2/8 are not | |
646 | * the same. Note that this routine has the same return value sense | |
647 | * as '==' (which is different from prefix_cmp). | |
648 | */ | |
d62a17ae | 649 | int prefix_same(const struct prefix *p1, const struct prefix *p2) |
718e3744 | 650 | { |
d62a17ae | 651 | if ((p1 && !p2) || (!p1 && p2)) |
652 | return 0; | |
653 | ||
654 | if (!p1 && !p2) | |
655 | return 1; | |
656 | ||
657 | if (p1->family == p2->family && p1->prefixlen == p2->prefixlen) { | |
658 | if (p1->family == AF_INET) | |
19aad877 | 659 | if (IPV4_ADDR_SAME(&p1->u.prefix4, &p2->u.prefix4)) |
d62a17ae | 660 | return 1; |
661 | if (p1->family == AF_INET6) | |
662 | if (IPV6_ADDR_SAME(&p1->u.prefix6.s6_addr, | |
663 | &p2->u.prefix6.s6_addr)) | |
664 | return 1; | |
665 | if (p1->family == AF_ETHERNET) | |
b03b8898 DS |
666 | if (!memcmp(&p1->u.prefix_eth, &p2->u.prefix_eth, |
667 | sizeof(struct ethaddr))) | |
668 | return 1; | |
669 | if (p1->family == AF_EVPN) | |
d62a17ae | 670 | if (!memcmp(&p1->u.prefix_evpn, &p2->u.prefix_evpn, |
671 | sizeof(struct evpn_addr))) | |
672 | return 1; | |
9a14899b PG |
673 | if (p1->family == AF_FLOWSPEC) { |
674 | if (p1->u.prefix_flowspec.prefixlen != | |
675 | p2->u.prefix_flowspec.prefixlen) | |
676 | return 0; | |
677 | if (!memcmp(&p1->u.prefix_flowspec.ptr, | |
678 | &p2->u.prefix_flowspec.ptr, | |
679 | p2->u.prefix_flowspec.prefixlen)) | |
680 | return 1; | |
681 | } | |
d62a17ae | 682 | } |
683 | return 0; | |
718e3744 | 684 | } |
685 | ||
9d24baaa | 686 | /* |
687 | * Return 0 if the network prefixes represented by the struct prefix | |
688 | * arguments are the same prefix, and 1 otherwise. Network prefixes | |
689 | * are considered the same if the prefix lengths are equal and the | |
690 | * network parts are the same. Host bits (which are considered masked | |
691 | * by the prefix length) are not significant. Thus, 10.0.0.1/8 and | |
692 | * 10.0.0.2/8 are considered equivalent by this routine. Note that | |
693 | * this routine has the same return sense as strcmp (which is different | |
694 | * from prefix_same). | |
695 | */ | |
d62a17ae | 696 | int prefix_cmp(const struct prefix *p1, const struct prefix *p2) |
718e3744 | 697 | { |
d62a17ae | 698 | int offset; |
699 | int shift; | |
718e3744 | 700 | |
d62a17ae | 701 | /* Set both prefix's head pointer. */ |
9a14899b PG |
702 | const uint8_t *pp1; |
703 | const uint8_t *pp2; | |
718e3744 | 704 | |
9a14899b | 705 | if (p1->family != p2->family) |
d62a17ae | 706 | return 1; |
9a14899b PG |
707 | if (p1->family == AF_FLOWSPEC) { |
708 | pp1 = (const uint8_t *)p1->u.prefix_flowspec.ptr; | |
709 | pp2 = (const uint8_t *)p2->u.prefix_flowspec.ptr; | |
718e3744 | 710 | |
9a14899b PG |
711 | if (p1->u.prefix_flowspec.prefixlen != |
712 | p2->u.prefix_flowspec.prefixlen) | |
713 | return 1; | |
714 | ||
715 | offset = p1->u.prefix_flowspec.prefixlen; | |
716 | while (offset--) | |
717 | if (pp1[offset] != pp2[offset]) | |
718 | return 1; | |
719 | return 0; | |
720 | } | |
721 | pp1 = (const uint8_t *)&p1->u.prefix; | |
722 | pp2 = (const uint8_t *)&p2->u.prefix; | |
723 | ||
724 | if (p1->prefixlen != p2->prefixlen) | |
725 | return 1; | |
d62a17ae | 726 | offset = p1->prefixlen / PNBBY; |
727 | shift = p1->prefixlen % PNBBY; | |
718e3744 | 728 | |
d62a17ae | 729 | if (shift) |
730 | if (maskbit[shift] & (pp1[offset] ^ pp2[offset])) | |
731 | return 1; | |
718e3744 | 732 | |
d62a17ae | 733 | while (offset--) |
734 | if (pp1[offset] != pp2[offset]) | |
735 | return 1; | |
718e3744 | 736 | |
d62a17ae | 737 | return 0; |
718e3744 | 738 | } |
739 | ||
17e52061 DL |
740 | /* |
741 | * Count the number of common bits in 2 prefixes. The prefix length is | |
742 | * ignored for this function; the whole prefix is compared. If the prefix | |
743 | * address families don't match, return -1; otherwise the return value is | |
744 | * in range 0 ... maximum prefix length for the address family. | |
745 | */ | |
d62a17ae | 746 | int prefix_common_bits(const struct prefix *p1, const struct prefix *p2) |
17e52061 | 747 | { |
d62a17ae | 748 | int pos, bit; |
749 | int length = 0; | |
d7c0a89a | 750 | uint8_t xor ; |
d62a17ae | 751 | |
752 | /* Set both prefix's head pointer. */ | |
d7c0a89a QY |
753 | const uint8_t *pp1 = (const uint8_t *)&p1->u.prefix; |
754 | const uint8_t *pp2 = (const uint8_t *)&p2->u.prefix; | |
d62a17ae | 755 | |
756 | if (p1->family == AF_INET) | |
757 | length = IPV4_MAX_BYTELEN; | |
758 | if (p1->family == AF_INET6) | |
759 | length = IPV6_MAX_BYTELEN; | |
760 | if (p1->family == AF_ETHERNET) | |
b03b8898 DS |
761 | length = ETH_ALEN; |
762 | if (p1->family == AF_EVPN) | |
d62a17ae | 763 | length = 8 * sizeof(struct evpn_addr); |
764 | ||
765 | if (p1->family != p2->family || !length) | |
766 | return -1; | |
767 | ||
768 | for (pos = 0; pos < length; pos++) | |
769 | if (pp1[pos] != pp2[pos]) | |
770 | break; | |
771 | if (pos == length) | |
772 | return pos * 8; | |
773 | ||
774 | xor = pp1[pos] ^ pp2[pos]; | |
775 | for (bit = 0; bit < 8; bit++) | |
776 | if (xor&(1 << (7 - bit))) | |
777 | break; | |
778 | ||
779 | return pos * 8 + bit; | |
17e52061 DL |
780 | } |
781 | ||
718e3744 | 782 | /* Return prefix family type string. */ |
d62a17ae | 783 | const char *prefix_family_str(const struct prefix *p) |
718e3744 | 784 | { |
d62a17ae | 785 | if (p->family == AF_INET) |
786 | return "inet"; | |
787 | if (p->family == AF_INET6) | |
788 | return "inet6"; | |
789 | if (p->family == AF_ETHERNET) | |
790 | return "ether"; | |
b03b8898 DS |
791 | if (p->family == AF_EVPN) |
792 | return "evpn"; | |
d62a17ae | 793 | return "unspec"; |
718e3744 | 794 | } |
795 | ||
796 | /* Allocate new prefix_ipv4 structure. */ | |
d62a17ae | 797 | struct prefix_ipv4 *prefix_ipv4_new() |
718e3744 | 798 | { |
d62a17ae | 799 | struct prefix_ipv4 *p; |
800 | ||
801 | /* Call prefix_new to allocate a full-size struct prefix to avoid | |
802 | problems | |
803 | where the struct prefix_ipv4 is cast to struct prefix and unallocated | |
804 | bytes were being referenced (e.g. in structure assignments). */ | |
805 | p = (struct prefix_ipv4 *)prefix_new(); | |
806 | p->family = AF_INET; | |
807 | return p; | |
718e3744 | 808 | } |
809 | ||
810 | /* Free prefix_ipv4 structure. */ | |
d62a17ae | 811 | void prefix_ipv4_free(struct prefix_ipv4 *p) |
718e3744 | 812 | { |
d62a17ae | 813 | prefix_free((struct prefix *)p); |
718e3744 | 814 | } |
815 | ||
816 | /* When string format is invalid return 0. */ | |
d62a17ae | 817 | int str2prefix_ipv4(const char *str, struct prefix_ipv4 *p) |
718e3744 | 818 | { |
d62a17ae | 819 | int ret; |
820 | int plen; | |
821 | char *pnt; | |
822 | char *cp; | |
823 | ||
824 | /* Find slash inside string. */ | |
825 | pnt = strchr(str, '/'); | |
826 | ||
827 | /* String doesn't contail slash. */ | |
828 | if (pnt == NULL) { | |
829 | /* Convert string to prefix. */ | |
830 | ret = inet_aton(str, &p->prefix); | |
831 | if (ret == 0) | |
832 | return 0; | |
833 | ||
834 | /* If address doesn't contain slash we assume it host address. | |
835 | */ | |
836 | p->family = AF_INET; | |
837 | p->prefixlen = IPV4_MAX_BITLEN; | |
838 | ||
839 | return ret; | |
840 | } else { | |
841 | cp = XMALLOC(MTYPE_TMP, (pnt - str) + 1); | |
842 | strncpy(cp, str, pnt - str); | |
843 | *(cp + (pnt - str)) = '\0'; | |
844 | ret = inet_aton(cp, &p->prefix); | |
845 | XFREE(MTYPE_TMP, cp); | |
846 | ||
847 | /* Get prefix length. */ | |
d7c0a89a | 848 | plen = (uint8_t)atoi(++pnt); |
d62a17ae | 849 | if (plen > IPV4_MAX_PREFIXLEN) |
850 | return 0; | |
851 | ||
852 | p->family = AF_INET; | |
853 | p->prefixlen = plen; | |
854 | } | |
718e3744 | 855 | |
d62a17ae | 856 | return ret; |
718e3744 | 857 | } |
858 | ||
32ac65d9 | 859 | /* When string format is invalid return 0. */ |
d62a17ae | 860 | int str2prefix_eth(const char *str, struct prefix_eth *p) |
32ac65d9 | 861 | { |
d62a17ae | 862 | int ret = 0; |
863 | int plen = 48; | |
864 | char *pnt; | |
865 | char *cp = NULL; | |
866 | const char *str_addr = str; | |
867 | unsigned int a[6]; | |
868 | int i; | |
0f6476cc | 869 | bool slash = false; |
d62a17ae | 870 | |
3b0f6068 DL |
871 | if (!strcmp(str, "any")) { |
872 | memset(p, 0, sizeof(*p)); | |
873 | p->family = AF_ETHERNET; | |
874 | return 1; | |
875 | } | |
876 | ||
d62a17ae | 877 | /* Find slash inside string. */ |
878 | pnt = strchr(str, '/'); | |
879 | ||
880 | if (pnt) { | |
881 | /* Get prefix length. */ | |
d7c0a89a | 882 | plen = (uint8_t)atoi(++pnt); |
d62a17ae | 883 | if (plen > 48) { |
884 | ret = 0; | |
885 | goto done; | |
886 | } | |
887 | ||
888 | cp = XMALLOC(MTYPE_TMP, (pnt - str) + 1); | |
889 | strncpy(cp, str, pnt - str); | |
890 | *(cp + (pnt - str)) = '\0'; | |
891 | ||
892 | str_addr = cp; | |
0f6476cc | 893 | slash = true; |
32ac65d9 LB |
894 | } |
895 | ||
d62a17ae | 896 | /* Convert string to prefix. */ |
897 | if (sscanf(str_addr, "%2x:%2x:%2x:%2x:%2x:%2x", a + 0, a + 1, a + 2, | |
898 | a + 3, a + 4, a + 5) | |
899 | != 6) { | |
900 | ret = 0; | |
901 | goto done; | |
902 | } | |
903 | for (i = 0; i < 6; ++i) { | |
904 | p->eth_addr.octet[i] = a[i] & 0xff; | |
905 | } | |
906 | p->prefixlen = plen; | |
907 | p->family = AF_ETHERNET; | |
0f6476cc DS |
908 | |
909 | /* | |
910 | * special case to allow old configurations to work | |
911 | * Since all zero's is implicitly meant to allow | |
912 | * a comparison to zero, let's assume | |
913 | */ | |
914 | if (!slash && is_zero_mac(&(p->eth_addr))) | |
996c9314 | 915 | p->prefixlen = 0; |
0f6476cc | 916 | |
d62a17ae | 917 | ret = 1; |
32ac65d9 LB |
918 | |
919 | done: | |
d62a17ae | 920 | if (cp) |
921 | XFREE(MTYPE_TMP, cp); | |
32ac65d9 | 922 | |
d62a17ae | 923 | return ret; |
32ac65d9 LB |
924 | } |
925 | ||
051954f5 | 926 | /* Convert masklen into IP address's netmask (network byte order). */ |
d62a17ae | 927 | void masklen2ip(const int masklen, struct in_addr *netmask) |
718e3744 | 928 | { |
d62a17ae | 929 | assert(masklen >= 0 && masklen <= IPV4_MAX_BITLEN); |
e96b3121 | 930 | |
d62a17ae | 931 | /* left shift is only defined for less than the size of the type. |
932 | * we unconditionally use long long in case the target platform | |
933 | * has defined behaviour for << 32 (or has a 64-bit left shift) */ | |
e96b3121 | 934 | |
d62a17ae | 935 | if (sizeof(unsigned long long) > 4) |
936 | netmask->s_addr = htonl(0xffffffffULL << (32 - masklen)); | |
937 | else | |
938 | netmask->s_addr = | |
939 | htonl(masklen ? 0xffffffffU << (32 - masklen) : 0); | |
718e3744 | 940 | } |
941 | ||
942 | /* Convert IP address's netmask into integer. We assume netmask is | |
943 | sequential one. Argument netmask should be network byte order. */ | |
d7c0a89a | 944 | uint8_t ip_masklen(struct in_addr netmask) |
718e3744 | 945 | { |
d62a17ae | 946 | uint32_t tmp = ~ntohl(netmask.s_addr); |
947 | if (tmp) | |
948 | /* clz: count leading zeroes. sadly, the behaviour of this | |
949 | * builtin | |
950 | * is undefined for a 0 argument, even though most CPUs give 32 | |
951 | */ | |
952 | return __builtin_clz(tmp); | |
953 | else | |
954 | return 32; | |
718e3744 | 955 | } |
956 | ||
caff7905 | 957 | /* Apply mask to IPv4 prefix (network byte order). */ |
d62a17ae | 958 | void apply_mask_ipv4(struct prefix_ipv4 *p) |
718e3744 | 959 | { |
d62a17ae | 960 | struct in_addr mask; |
961 | masklen2ip(p->prefixlen, &mask); | |
962 | p->prefix.s_addr &= mask.s_addr; | |
718e3744 | 963 | } |
964 | ||
965 | /* If prefix is 0.0.0.0/0 then return 1 else return 0. */ | |
d62a17ae | 966 | int prefix_ipv4_any(const struct prefix_ipv4 *p) |
718e3744 | 967 | { |
d62a17ae | 968 | return (p->prefix.s_addr == 0 && p->prefixlen == 0); |
718e3744 | 969 | } |
6b0655a2 | 970 | |
718e3744 | 971 | /* Allocate a new ip version 6 route */ |
d62a17ae | 972 | struct prefix_ipv6 *prefix_ipv6_new(void) |
718e3744 | 973 | { |
d62a17ae | 974 | struct prefix_ipv6 *p; |
718e3744 | 975 | |
d62a17ae | 976 | /* Allocate a full-size struct prefix to avoid problems with structure |
977 | size mismatches. */ | |
978 | p = (struct prefix_ipv6 *)prefix_new(); | |
979 | p->family = AF_INET6; | |
980 | return p; | |
718e3744 | 981 | } |
982 | ||
983 | /* Free prefix for IPv6. */ | |
d62a17ae | 984 | void prefix_ipv6_free(struct prefix_ipv6 *p) |
718e3744 | 985 | { |
d62a17ae | 986 | prefix_free((struct prefix *)p); |
718e3744 | 987 | } |
988 | ||
989 | /* If given string is valid return pin6 else return NULL */ | |
d62a17ae | 990 | int str2prefix_ipv6(const char *str, struct prefix_ipv6 *p) |
718e3744 | 991 | { |
d62a17ae | 992 | char *pnt; |
993 | char *cp; | |
994 | int ret; | |
995 | ||
996 | pnt = strchr(str, '/'); | |
997 | ||
998 | /* If string doesn't contain `/' treat it as host route. */ | |
999 | if (pnt == NULL) { | |
1000 | ret = inet_pton(AF_INET6, str, &p->prefix); | |
1001 | if (ret == 0) | |
1002 | return 0; | |
1003 | p->prefixlen = IPV6_MAX_BITLEN; | |
1004 | } else { | |
1005 | int plen; | |
1006 | ||
1007 | cp = XMALLOC(MTYPE_TMP, (pnt - str) + 1); | |
1008 | strncpy(cp, str, pnt - str); | |
1009 | *(cp + (pnt - str)) = '\0'; | |
1010 | ret = inet_pton(AF_INET6, cp, &p->prefix); | |
1011 | XFREE(MTYPE_TMP, cp); | |
1012 | if (ret == 0) | |
1013 | return 0; | |
d7c0a89a | 1014 | plen = (uint8_t)atoi(++pnt); |
d62a17ae | 1015 | if (plen > IPV6_MAX_BITLEN) |
1016 | return 0; | |
1017 | p->prefixlen = plen; | |
1018 | } | |
1019 | p->family = AF_INET6; | |
718e3744 | 1020 | |
d62a17ae | 1021 | return ret; |
718e3744 | 1022 | } |
1023 | ||
b04c699e | 1024 | /* Convert struct in6_addr netmask into integer. |
d7c0a89a | 1025 | * FIXME return uint8_t as ip_maskleni() does. */ |
d62a17ae | 1026 | int ip6_masklen(struct in6_addr netmask) |
718e3744 | 1027 | { |
d62a17ae | 1028 | int len = 0; |
1029 | unsigned char val; | |
1030 | unsigned char *pnt; | |
1031 | ||
1032 | pnt = (unsigned char *)&netmask; | |
1033 | ||
1034 | while ((*pnt == 0xff) && len < IPV6_MAX_BITLEN) { | |
1035 | len += 8; | |
1036 | pnt++; | |
718e3744 | 1037 | } |
d62a17ae | 1038 | |
1039 | if (len < IPV6_MAX_BITLEN) { | |
1040 | val = *pnt; | |
1041 | while (val) { | |
1042 | len++; | |
1043 | val <<= 1; | |
1044 | } | |
1045 | } | |
1046 | return len; | |
718e3744 | 1047 | } |
1048 | ||
d62a17ae | 1049 | void masklen2ip6(const int masklen, struct in6_addr *netmask) |
718e3744 | 1050 | { |
d62a17ae | 1051 | assert(masklen >= 0 && masklen <= IPV6_MAX_BITLEN); |
1052 | memcpy(netmask, maskbytes6 + masklen, sizeof(struct in6_addr)); | |
718e3744 | 1053 | } |
1054 | ||
d62a17ae | 1055 | void apply_mask_ipv6(struct prefix_ipv6 *p) |
718e3744 | 1056 | { |
d7c0a89a | 1057 | uint8_t *pnt; |
d62a17ae | 1058 | int index; |
1059 | int offset; | |
8c7f49d2 | 1060 | |
d62a17ae | 1061 | index = p->prefixlen / 8; |
8c7f49d2 | 1062 | |
d62a17ae | 1063 | if (index < 16) { |
d7c0a89a | 1064 | pnt = (uint8_t *)&p->prefix; |
d62a17ae | 1065 | offset = p->prefixlen % 8; |
8c7f49d2 | 1066 | |
d62a17ae | 1067 | pnt[index] &= maskbit[offset]; |
1068 | index++; | |
8c7f49d2 | 1069 | |
d62a17ae | 1070 | while (index < 16) |
1071 | pnt[index++] = 0; | |
1072 | } | |
718e3744 | 1073 | } |
1074 | ||
d62a17ae | 1075 | void apply_mask(struct prefix *p) |
718e3744 | 1076 | { |
d62a17ae | 1077 | switch (p->family) { |
1078 | case AF_INET: | |
1079 | apply_mask_ipv4((struct prefix_ipv4 *)p); | |
1080 | break; | |
1081 | case AF_INET6: | |
1082 | apply_mask_ipv6((struct prefix_ipv6 *)p); | |
1083 | break; | |
1084 | default: | |
1085 | break; | |
1086 | } | |
1087 | return; | |
718e3744 | 1088 | } |
1089 | ||
b04c699e | 1090 | /* Utility function of convert between struct prefix <=> union sockunion. |
1091 | * FIXME This function isn't used anywhere. */ | |
d62a17ae | 1092 | struct prefix *sockunion2prefix(const union sockunion *dest, |
1093 | const union sockunion *mask) | |
718e3744 | 1094 | { |
d62a17ae | 1095 | if (dest->sa.sa_family == AF_INET) { |
1096 | struct prefix_ipv4 *p; | |
1097 | ||
1098 | p = prefix_ipv4_new(); | |
1099 | p->family = AF_INET; | |
1100 | p->prefix = dest->sin.sin_addr; | |
1101 | p->prefixlen = ip_masklen(mask->sin.sin_addr); | |
1102 | return (struct prefix *)p; | |
1103 | } | |
1104 | if (dest->sa.sa_family == AF_INET6) { | |
1105 | struct prefix_ipv6 *p; | |
1106 | ||
1107 | p = prefix_ipv6_new(); | |
1108 | p->family = AF_INET6; | |
1109 | p->prefixlen = ip6_masklen(mask->sin6.sin6_addr); | |
1110 | memcpy(&p->prefix, &dest->sin6.sin6_addr, | |
1111 | sizeof(struct in6_addr)); | |
1112 | return (struct prefix *)p; | |
1113 | } | |
1114 | return NULL; | |
718e3744 | 1115 | } |
1116 | ||
b04c699e | 1117 | /* Utility function of convert between struct prefix <=> union sockunion. */ |
d62a17ae | 1118 | struct prefix *sockunion2hostprefix(const union sockunion *su, |
1119 | struct prefix *prefix) | |
718e3744 | 1120 | { |
d62a17ae | 1121 | if (su->sa.sa_family == AF_INET) { |
1122 | struct prefix_ipv4 *p; | |
1123 | ||
1124 | p = prefix ? (struct prefix_ipv4 *)prefix : prefix_ipv4_new(); | |
1125 | p->family = AF_INET; | |
1126 | p->prefix = su->sin.sin_addr; | |
1127 | p->prefixlen = IPV4_MAX_BITLEN; | |
1128 | return (struct prefix *)p; | |
1129 | } | |
1130 | if (su->sa.sa_family == AF_INET6) { | |
1131 | struct prefix_ipv6 *p; | |
1132 | ||
1133 | p = prefix ? (struct prefix_ipv6 *)prefix : prefix_ipv6_new(); | |
1134 | p->family = AF_INET6; | |
1135 | p->prefixlen = IPV6_MAX_BITLEN; | |
1136 | memcpy(&p->prefix, &su->sin6.sin6_addr, | |
1137 | sizeof(struct in6_addr)); | |
1138 | return (struct prefix *)p; | |
1139 | } | |
1140 | return NULL; | |
718e3744 | 1141 | } |
1142 | ||
d62a17ae | 1143 | void prefix2sockunion(const struct prefix *p, union sockunion *su) |
17e52061 | 1144 | { |
d62a17ae | 1145 | memset(su, 0, sizeof(*su)); |
1146 | ||
1147 | su->sa.sa_family = p->family; | |
1148 | if (p->family == AF_INET) | |
1149 | su->sin.sin_addr = p->u.prefix4; | |
1150 | if (p->family == AF_INET6) | |
1151 | memcpy(&su->sin6.sin6_addr, &p->u.prefix6, | |
1152 | sizeof(struct in6_addr)); | |
17e52061 DL |
1153 | } |
1154 | ||
d62a17ae | 1155 | int prefix_blen(const struct prefix *p) |
718e3744 | 1156 | { |
d62a17ae | 1157 | switch (p->family) { |
1158 | case AF_INET: | |
1159 | return IPV4_MAX_BYTELEN; | |
1160 | break; | |
1161 | case AF_INET6: | |
1162 | return IPV6_MAX_BYTELEN; | |
1163 | break; | |
1164 | case AF_ETHERNET: | |
7628d862 | 1165 | return ETH_ALEN; |
b03b8898 | 1166 | break; |
d62a17ae | 1167 | } |
1168 | return 0; | |
718e3744 | 1169 | } |
1170 | ||
1171 | /* Generic function for conversion string to struct prefix. */ | |
d62a17ae | 1172 | int str2prefix(const char *str, struct prefix *p) |
718e3744 | 1173 | { |
d62a17ae | 1174 | int ret; |
718e3744 | 1175 | |
d62a17ae | 1176 | /* First we try to convert string to struct prefix_ipv4. */ |
1177 | ret = str2prefix_ipv4(str, (struct prefix_ipv4 *)p); | |
1178 | if (ret) | |
1179 | return ret; | |
718e3744 | 1180 | |
d62a17ae | 1181 | /* Next we try to convert string to struct prefix_ipv6. */ |
1182 | ret = str2prefix_ipv6(str, (struct prefix_ipv6 *)p); | |
1183 | if (ret) | |
1184 | return ret; | |
718e3744 | 1185 | |
d62a17ae | 1186 | /* Next we try to convert string to struct prefix_eth. */ |
1187 | ret = str2prefix_eth(str, (struct prefix_eth *)p); | |
1188 | if (ret) | |
1189 | return ret; | |
32ac65d9 | 1190 | |
d62a17ae | 1191 | return 0; |
718e3744 | 1192 | } |
1193 | ||
b03b8898 | 1194 | static const char *prefixevpn2str(const struct prefix *p, char *str, int size) |
86f1ef44 | 1195 | { |
d7c0a89a | 1196 | uint8_t family; |
d62a17ae | 1197 | char buf[PREFIX2STR_BUFFER]; |
1198 | char buf2[ETHER_ADDR_STRLEN]; | |
1199 | ||
1200 | if (p->u.prefix_evpn.route_type == 2) { | |
1201 | if (IS_EVPN_PREFIX_IPADDR_NONE((struct prefix_evpn *)p)) | |
1202 | snprintf(str, size, "[%d]:[%s]/%d", | |
1203 | p->u.prefix_evpn.route_type, | |
1204 | prefix_mac2str(&p->u.prefix_evpn.mac, buf2, | |
1205 | sizeof(buf2)), | |
1206 | p->prefixlen); | |
1207 | else { | |
1208 | family = IS_EVPN_PREFIX_IPADDR_V4( | |
1209 | (struct prefix_evpn *)p) | |
1210 | ? AF_INET | |
1211 | : AF_INET6; | |
1212 | snprintf(str, size, "[%d]:[%s]:[%s]/%d", | |
1213 | p->u.prefix_evpn.route_type, | |
1214 | prefix_mac2str(&p->u.prefix_evpn.mac, buf2, | |
1215 | sizeof(buf2)), | |
1216 | inet_ntop(family, &p->u.prefix_evpn.ip.ip.addr, | |
1217 | buf, PREFIX2STR_BUFFER), | |
1218 | p->prefixlen); | |
1219 | } | |
1220 | } else if (p->u.prefix_evpn.route_type == 3) { | |
1221 | family = IS_EVPN_PREFIX_IPADDR_V4((struct prefix_evpn *)p) | |
1222 | ? AF_INET | |
1223 | : AF_INET6; | |
1224 | snprintf(str, size, "[%d]:[%s]/%d", p->u.prefix_evpn.route_type, | |
1225 | inet_ntop(family, &p->u.prefix_evpn.ip.ip.addr, buf, | |
1226 | PREFIX2STR_BUFFER), | |
1227 | p->prefixlen); | |
1228 | } else if (p->u.prefix_evpn.route_type == 5) { | |
1229 | family = IS_EVPN_PREFIX_IPADDR_V4((struct prefix_evpn *)p) | |
1230 | ? AF_INET | |
1231 | : AF_INET6; | |
342dd0c6 | 1232 | snprintf(str, size, "[%d]:[%u][%s/%d]/%d", |
d62a17ae | 1233 | p->u.prefix_evpn.route_type, p->u.prefix_evpn.eth_tag, |
1234 | inet_ntop(family, &p->u.prefix_evpn.ip.ip.addr, buf, | |
1235 | PREFIX2STR_BUFFER), | |
996c9314 | 1236 | p->u.prefix_evpn.ip_prefix_length, p->prefixlen); |
d62a17ae | 1237 | } else { |
b03b8898 | 1238 | sprintf(str, "Unsupported EVPN route type %d", |
996c9314 | 1239 | p->u.prefix_evpn.route_type); |
d62a17ae | 1240 | } |
1241 | ||
1242 | return str; | |
86f1ef44 | 1243 | } |
1244 | ||
d62a17ae | 1245 | const char *prefix2str(union prefixconstptr pu, char *str, int size) |
718e3744 | 1246 | { |
d62a17ae | 1247 | const struct prefix *p = pu.p; |
1248 | char buf[PREFIX2STR_BUFFER]; | |
1249 | ||
1250 | switch (p->family) { | |
1251 | case AF_INET: | |
1252 | case AF_INET6: | |
9d303b37 DL |
1253 | snprintf(str, size, "%s/%d", inet_ntop(p->family, &p->u.prefix, |
1254 | buf, PREFIX2STR_BUFFER), | |
d62a17ae | 1255 | p->prefixlen); |
1256 | break; | |
1257 | ||
1258 | case AF_ETHERNET: | |
b03b8898 DS |
1259 | snprintf(str, size, "%s/%d", |
1260 | prefix_mac2str(&p->u.prefix_eth, buf, sizeof(buf)), | |
1261 | p->prefixlen); | |
1262 | break; | |
1263 | ||
1264 | case AF_EVPN: | |
1265 | prefixevpn2str(p, str, size); | |
d62a17ae | 1266 | break; |
1267 | ||
9a14899b PG |
1268 | case AF_FLOWSPEC: |
1269 | sprintf(str, "FS prefix"); | |
1270 | break; | |
1271 | ||
d62a17ae | 1272 | default: |
1273 | sprintf(str, "UNK prefix"); | |
1274 | break; | |
1275 | } | |
1276 | ||
1277 | return str; | |
718e3744 | 1278 | } |
1279 | ||
d62a17ae | 1280 | struct prefix *prefix_new() |
718e3744 | 1281 | { |
d62a17ae | 1282 | struct prefix *p; |
718e3744 | 1283 | |
d62a17ae | 1284 | p = XCALLOC(MTYPE_PREFIX, sizeof *p); |
1285 | return p; | |
718e3744 | 1286 | } |
1287 | ||
1288 | /* Free prefix structure. */ | |
d62a17ae | 1289 | void prefix_free(struct prefix *p) |
718e3744 | 1290 | { |
d62a17ae | 1291 | XFREE(MTYPE_PREFIX, p); |
718e3744 | 1292 | } |
1293 | ||
1294 | /* Utility function. Check the string only contains digit | |
b04c699e | 1295 | * character. |
1296 | * FIXME str.[c|h] would be better place for this function. */ | |
d62a17ae | 1297 | int all_digit(const char *str) |
718e3744 | 1298 | { |
d62a17ae | 1299 | for (; *str != '\0'; str++) |
1300 | if (!isdigit((int)*str)) | |
1301 | return 0; | |
1302 | return 1; | |
718e3744 | 1303 | } |
1304 | ||
1305 | /* Utility function to convert ipv4 prefixes to Classful prefixes */ | |
d62a17ae | 1306 | void apply_classful_mask_ipv4(struct prefix_ipv4 *p) |
718e3744 | 1307 | { |
1308 | ||
d7c0a89a | 1309 | uint32_t destination; |
d62a17ae | 1310 | |
1311 | destination = ntohl(p->prefix.s_addr); | |
1312 | ||
1313 | if (p->prefixlen == IPV4_MAX_PREFIXLEN) | |
1314 | ; | |
1315 | /* do nothing for host routes */ | |
1316 | else if (IN_CLASSC(destination)) { | |
1317 | p->prefixlen = 24; | |
1318 | apply_mask_ipv4(p); | |
1319 | } else if (IN_CLASSB(destination)) { | |
1320 | p->prefixlen = 16; | |
1321 | apply_mask_ipv4(p); | |
1322 | } else { | |
1323 | p->prefixlen = 8; | |
1324 | apply_mask_ipv4(p); | |
1325 | } | |
718e3744 | 1326 | } |
1327 | ||
d62a17ae | 1328 | in_addr_t ipv4_network_addr(in_addr_t hostaddr, int masklen) |
3fb9cd6e | 1329 | { |
d62a17ae | 1330 | struct in_addr mask; |
3fb9cd6e | 1331 | |
d62a17ae | 1332 | masklen2ip(masklen, &mask); |
1333 | return hostaddr & mask.s_addr; | |
3fb9cd6e | 1334 | } |
1335 | ||
d62a17ae | 1336 | in_addr_t ipv4_broadcast_addr(in_addr_t hostaddr, int masklen) |
3fb9cd6e | 1337 | { |
d62a17ae | 1338 | struct in_addr mask; |
1339 | ||
1340 | masklen2ip(masklen, &mask); | |
1341 | return (masklen != IPV4_MAX_PREFIXLEN - 1) ? | |
1342 | /* normal case */ | |
1343 | (hostaddr | ~mask.s_addr) | |
1344 | : | |
1345 | /* special case for /31 */ | |
1346 | (hostaddr ^ ~mask.s_addr); | |
3fb9cd6e | 1347 | } |
1348 | ||
d62a17ae | 1349 | /* Utility function to convert ipv4 netmask to prefixes |
718e3744 | 1350 | ex.) "1.1.0.0" "255.255.0.0" => "1.1.0.0/16" |
1351 | ex.) "1.0.0.0" NULL => "1.0.0.0/8" */ | |
d62a17ae | 1352 | int netmask_str2prefix_str(const char *net_str, const char *mask_str, |
1353 | char *prefix_str) | |
718e3744 | 1354 | { |
d62a17ae | 1355 | struct in_addr network; |
1356 | struct in_addr mask; | |
d7c0a89a QY |
1357 | uint8_t prefixlen; |
1358 | uint32_t destination; | |
d62a17ae | 1359 | int ret; |
1360 | ||
1361 | ret = inet_aton(net_str, &network); | |
1362 | if (!ret) | |
1363 | return 0; | |
1364 | ||
1365 | if (mask_str) { | |
1366 | ret = inet_aton(mask_str, &mask); | |
1367 | if (!ret) | |
1368 | return 0; | |
1369 | ||
1370 | prefixlen = ip_masklen(mask); | |
1371 | } else { | |
1372 | destination = ntohl(network.s_addr); | |
1373 | ||
1374 | if (network.s_addr == 0) | |
1375 | prefixlen = 0; | |
1376 | else if (IN_CLASSC(destination)) | |
1377 | prefixlen = 24; | |
1378 | else if (IN_CLASSB(destination)) | |
1379 | prefixlen = 16; | |
1380 | else if (IN_CLASSA(destination)) | |
1381 | prefixlen = 8; | |
1382 | else | |
1383 | return 0; | |
1384 | } | |
718e3744 | 1385 | |
d62a17ae | 1386 | sprintf(prefix_str, "%s/%d", net_str, prefixlen); |
718e3744 | 1387 | |
d62a17ae | 1388 | return 1; |
718e3744 | 1389 | } |
1390 | ||
5920990f | 1391 | /* Utility function for making IPv6 address string. */ |
d62a17ae | 1392 | const char *inet6_ntoa(struct in6_addr addr) |
5920990f | 1393 | { |
d62a17ae | 1394 | static char buf[INET6_ADDRSTRLEN]; |
5920990f | 1395 | |
d62a17ae | 1396 | inet_ntop(AF_INET6, &addr, buf, INET6_ADDRSTRLEN); |
1397 | return buf; | |
5920990f | 1398 | } |
c215ecaf | 1399 | |
c215ecaf | 1400 | /* converts to internal representation of mac address |
d62a17ae | 1401 | * returns 1 on success, 0 otherwise |
c215ecaf PG |
1402 | * format accepted: AA:BB:CC:DD:EE:FF |
1403 | * if mac parameter is null, then check only | |
1404 | */ | |
db42a173 | 1405 | int prefix_str2mac(const char *str, struct ethaddr *mac) |
c215ecaf | 1406 | { |
d62a17ae | 1407 | unsigned int a[6]; |
1408 | int i; | |
1409 | ||
1410 | if (!str) | |
1411 | return 0; | |
1412 | ||
1413 | if (sscanf(str, "%2x:%2x:%2x:%2x:%2x:%2x", a + 0, a + 1, a + 2, a + 3, | |
1414 | a + 4, a + 5) | |
1415 | != 6) { | |
1416 | /* error in incoming str length */ | |
1417 | return 0; | |
1418 | } | |
1419 | /* valid mac address */ | |
1420 | if (!mac) | |
1421 | return 1; | |
1422 | for (i = 0; i < 6; ++i) | |
1423 | mac->octet[i] = a[i] & 0xff; | |
1424 | return 1; | |
c215ecaf PG |
1425 | } |
1426 | ||
db42a173 | 1427 | char *prefix_mac2str(const struct ethaddr *mac, char *buf, int size) |
c215ecaf | 1428 | { |
d62a17ae | 1429 | char *ptr; |
1430 | ||
1431 | if (!mac) | |
1432 | return NULL; | |
1433 | if (!buf) | |
1434 | ptr = (char *)XMALLOC(MTYPE_TMP, | |
1435 | ETHER_ADDR_STRLEN * sizeof(char)); | |
1436 | else { | |
1437 | assert(size >= ETHER_ADDR_STRLEN); | |
1438 | ptr = buf; | |
1439 | } | |
1440 | snprintf(ptr, (ETHER_ADDR_STRLEN), "%02x:%02x:%02x:%02x:%02x:%02x", | |
1441 | (uint8_t)mac->octet[0], (uint8_t)mac->octet[1], | |
1442 | (uint8_t)mac->octet[2], (uint8_t)mac->octet[3], | |
1443 | (uint8_t)mac->octet[4], (uint8_t)mac->octet[5]); | |
1444 | return ptr; | |
c215ecaf | 1445 | } |
7a7761d2 CF |
1446 | |
1447 | unsigned prefix_hash_key(void *pp) | |
1448 | { | |
1449 | struct prefix copy; | |
1450 | ||
9a14899b PG |
1451 | if (((struct prefix *)pp)->family == AF_FLOWSPEC) { |
1452 | uint32_t len; | |
1453 | void *temp; | |
1454 | ||
1455 | /* make sure *all* unused bits are zero, | |
1456 | * particularly including alignment / | |
1457 | * padding and unused prefix bytes. | |
1458 | */ | |
1459 | memset(©, 0, sizeof(copy)); | |
1460 | prefix_copy(©, (struct prefix *)pp); | |
1461 | len = jhash((void *)copy.u.prefix_flowspec.ptr, | |
1462 | copy.u.prefix_flowspec.prefixlen, | |
1463 | 0x55aa5a5a); | |
1464 | temp = (void *)copy.u.prefix_flowspec.ptr; | |
1465 | XFREE(MTYPE_PREFIX_FLOWSPEC, temp); | |
1466 | copy.u.prefix_flowspec.ptr = (uintptr_t)NULL; | |
1467 | return len; | |
1468 | } | |
7a7761d2 CF |
1469 | /* make sure *all* unused bits are zero, particularly including |
1470 | * alignment / | |
1471 | * padding and unused prefix bytes. */ | |
1472 | memset(©, 0, sizeof(copy)); | |
1473 | prefix_copy(©, (struct prefix *)pp); | |
996c9314 LB |
1474 | return jhash(©, |
1475 | offsetof(struct prefix, u.prefix) + PSIZE(copy.prefixlen), | |
1476 | 0x55aa5a5a); | |
7a7761d2 | 1477 | } |