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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 | * | |
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 | |
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" | |
29 | #include "jhash.h" | |
30 | #include "lib_errors.h" | |
31 | #include "printfrr.h" | |
32 | ||
33 | DEFINE_MTYPE_STATIC(LIB, PREFIX, "Prefix") | |
34 | DEFINE_MTYPE_STATIC(LIB, PREFIX_FLOWSPEC, "Prefix Flowspec") | |
35 | ||
36 | /* Maskbit. */ | |
37 | static const uint8_t maskbit[] = {0x00, 0x80, 0xc0, 0xe0, 0xf0, | |
38 | 0xf8, 0xfc, 0xfe, 0xff}; | |
39 | ||
40 | static const struct in6_addr maskbytes6[] = { | |
41 | /* /0 */ {{{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
42 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
43 | /* /1 */ | |
44 | {{{0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
45 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
46 | /* /2 */ | |
47 | {{{0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
48 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
49 | /* /3 */ | |
50 | {{{0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
51 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
52 | /* /4 */ | |
53 | {{{0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
54 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
55 | /* /5 */ | |
56 | {{{0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
57 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
58 | /* /6 */ | |
59 | {{{0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
60 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
61 | /* /7 */ | |
62 | {{{0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
63 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
64 | /* /8 */ | |
65 | {{{0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
66 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
67 | /* /9 */ | |
68 | {{{0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
69 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
70 | /* /10 */ | |
71 | {{{0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
72 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
73 | /* /11 */ | |
74 | {{{0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
75 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
76 | /* /12 */ | |
77 | {{{0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
78 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
79 | /* /13 */ | |
80 | {{{0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
81 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
82 | /* /14 */ | |
83 | {{{0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
84 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
85 | /* /15 */ | |
86 | {{{0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
87 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
88 | /* /16 */ | |
89 | {{{0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
90 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
91 | /* /17 */ | |
92 | {{{0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
93 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
94 | /* /18 */ | |
95 | {{{0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
96 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
97 | /* /19 */ | |
98 | {{{0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
99 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
100 | /* /20 */ | |
101 | {{{0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
102 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
103 | /* /21 */ | |
104 | {{{0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
105 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
106 | /* /22 */ | |
107 | {{{0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
108 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
109 | /* /23 */ | |
110 | {{{0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
111 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
112 | /* /24 */ | |
113 | {{{0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
114 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
115 | /* /25 */ | |
116 | {{{0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
117 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
118 | /* /26 */ | |
119 | {{{0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
120 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
121 | /* /27 */ | |
122 | {{{0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
123 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
124 | /* /28 */ | |
125 | {{{0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
126 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
127 | /* /29 */ | |
128 | {{{0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
129 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
130 | /* /30 */ | |
131 | {{{0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
132 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
133 | /* /31 */ | |
134 | {{{0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
135 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
136 | /* /32 */ | |
137 | {{{0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
138 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
139 | /* /33 */ | |
140 | {{{0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
141 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
142 | /* /34 */ | |
143 | {{{0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
144 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
145 | /* /35 */ | |
146 | {{{0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
147 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
148 | /* /36 */ | |
149 | {{{0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
150 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
151 | /* /37 */ | |
152 | {{{0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
153 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
154 | /* /38 */ | |
155 | {{{0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
156 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
157 | /* /39 */ | |
158 | {{{0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
159 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
160 | /* /40 */ | |
161 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
162 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
163 | /* /41 */ | |
164 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, | |
165 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
166 | /* /42 */ | |
167 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, | |
168 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
169 | /* /43 */ | |
170 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, | |
171 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
172 | /* /44 */ | |
173 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, | |
174 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
175 | /* /45 */ | |
176 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, | |
177 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
178 | /* /46 */ | |
179 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, | |
180 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
181 | /* /47 */ | |
182 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, | |
183 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
184 | /* /48 */ | |
185 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, | |
186 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
187 | /* /49 */ | |
188 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, | |
189 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
190 | /* /50 */ | |
191 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, | |
192 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
193 | /* /51 */ | |
194 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, | |
195 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
196 | /* /52 */ | |
197 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, | |
198 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
199 | /* /53 */ | |
200 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, | |
201 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
202 | /* /54 */ | |
203 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, | |
204 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
205 | /* /55 */ | |
206 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, | |
207 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
208 | /* /56 */ | |
209 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, | |
210 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
211 | /* /57 */ | |
212 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, | |
213 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
214 | /* /58 */ | |
215 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, | |
216 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
217 | /* /59 */ | |
218 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, | |
219 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
220 | /* /60 */ | |
221 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, | |
222 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
223 | /* /61 */ | |
224 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, | |
225 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
226 | /* /62 */ | |
227 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, | |
228 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
229 | /* /63 */ | |
230 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, | |
231 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
232 | /* /64 */ | |
233 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, | |
234 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
235 | /* /65 */ | |
236 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, | |
237 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
238 | /* /66 */ | |
239 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, | |
240 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
241 | /* /67 */ | |
242 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, | |
243 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
244 | /* /68 */ | |
245 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, | |
246 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
247 | /* /69 */ | |
248 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, | |
249 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
250 | /* /70 */ | |
251 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, | |
252 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
253 | /* /71 */ | |
254 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, | |
255 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
256 | /* /72 */ | |
257 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, | |
258 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
259 | /* /73 */ | |
260 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, | |
261 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
262 | /* /74 */ | |
263 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, | |
264 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
265 | /* /75 */ | |
266 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, | |
267 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
268 | /* /76 */ | |
269 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, | |
270 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
271 | /* /77 */ | |
272 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, | |
273 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
274 | /* /78 */ | |
275 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, | |
276 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
277 | /* /79 */ | |
278 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, | |
279 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
280 | /* /80 */ | |
281 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, | |
282 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
283 | /* /81 */ | |
284 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, | |
285 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
286 | /* /82 */ | |
287 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, | |
288 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
289 | /* /83 */ | |
290 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, | |
291 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
292 | /* /84 */ | |
293 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, | |
294 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
295 | /* /85 */ | |
296 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, | |
297 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
298 | /* /86 */ | |
299 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, | |
300 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
301 | /* /87 */ | |
302 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, | |
303 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
304 | /* /88 */ | |
305 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
306 | 0x00, 0x00, 0x00, 0x00, 0x00}}}, | |
307 | /* /89 */ | |
308 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
309 | 0x80, 0x00, 0x00, 0x00, 0x00}}}, | |
310 | /* /90 */ | |
311 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
312 | 0xc0, 0x00, 0x00, 0x00, 0x00}}}, | |
313 | /* /91 */ | |
314 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
315 | 0xe0, 0x00, 0x00, 0x00, 0x00}}}, | |
316 | /* /92 */ | |
317 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
318 | 0xf0, 0x00, 0x00, 0x00, 0x00}}}, | |
319 | /* /93 */ | |
320 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
321 | 0xf8, 0x00, 0x00, 0x00, 0x00}}}, | |
322 | /* /94 */ | |
323 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
324 | 0xfc, 0x00, 0x00, 0x00, 0x00}}}, | |
325 | /* /95 */ | |
326 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
327 | 0xfe, 0x00, 0x00, 0x00, 0x00}}}, | |
328 | /* /96 */ | |
329 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
330 | 0xff, 0x00, 0x00, 0x00, 0x00}}}, | |
331 | /* /97 */ | |
332 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
333 | 0xff, 0x80, 0x00, 0x00, 0x00}}}, | |
334 | /* /98 */ | |
335 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
336 | 0xff, 0xc0, 0x00, 0x00, 0x00}}}, | |
337 | /* /99 */ | |
338 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
339 | 0xff, 0xe0, 0x00, 0x00, 0x00}}}, | |
340 | /* /100 */ | |
341 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
342 | 0xff, 0xf0, 0x00, 0x00, 0x00}}}, | |
343 | /* /101 */ | |
344 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
345 | 0xff, 0xf8, 0x00, 0x00, 0x00}}}, | |
346 | /* /102 */ | |
347 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
348 | 0xff, 0xfc, 0x00, 0x00, 0x00}}}, | |
349 | /* /103 */ | |
350 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
351 | 0xff, 0xfe, 0x00, 0x00, 0x00}}}, | |
352 | /* /104 */ | |
353 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
354 | 0xff, 0xff, 0x00, 0x00, 0x00}}}, | |
355 | /* /105 */ | |
356 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
357 | 0xff, 0xff, 0x80, 0x00, 0x00}}}, | |
358 | /* /106 */ | |
359 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
360 | 0xff, 0xff, 0xc0, 0x00, 0x00}}}, | |
361 | /* /107 */ | |
362 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
363 | 0xff, 0xff, 0xe0, 0x00, 0x00}}}, | |
364 | /* /108 */ | |
365 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
366 | 0xff, 0xff, 0xf0, 0x00, 0x00}}}, | |
367 | /* /109 */ | |
368 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
369 | 0xff, 0xff, 0xf8, 0x00, 0x00}}}, | |
370 | /* /110 */ | |
371 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
372 | 0xff, 0xff, 0xfc, 0x00, 0x00}}}, | |
373 | /* /111 */ | |
374 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
375 | 0xff, 0xff, 0xfe, 0x00, 0x00}}}, | |
376 | /* /112 */ | |
377 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
378 | 0xff, 0xff, 0xff, 0x00, 0x00}}}, | |
379 | /* /113 */ | |
380 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
381 | 0xff, 0xff, 0xff, 0x80, 0x00}}}, | |
382 | /* /114 */ | |
383 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
384 | 0xff, 0xff, 0xff, 0xc0, 0x00}}}, | |
385 | /* /115 */ | |
386 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
387 | 0xff, 0xff, 0xff, 0xe0, 0x00}}}, | |
388 | /* /116 */ | |
389 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
390 | 0xff, 0xff, 0xff, 0xf0, 0x00}}}, | |
391 | /* /117 */ | |
392 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
393 | 0xff, 0xff, 0xff, 0xf8, 0x00}}}, | |
394 | /* /118 */ | |
395 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
396 | 0xff, 0xff, 0xff, 0xfc, 0x00}}}, | |
397 | /* /119 */ | |
398 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
399 | 0xff, 0xff, 0xff, 0xfe, 0x00}}}, | |
400 | /* /120 */ | |
401 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
402 | 0xff, 0xff, 0xff, 0xff, 0x00}}}, | |
403 | /* /121 */ | |
404 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
405 | 0xff, 0xff, 0xff, 0xff, 0x80}}}, | |
406 | /* /122 */ | |
407 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
408 | 0xff, 0xff, 0xff, 0xff, 0xc0}}}, | |
409 | /* /123 */ | |
410 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
411 | 0xff, 0xff, 0xff, 0xff, 0xe0}}}, | |
412 | /* /124 */ | |
413 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
414 | 0xff, 0xff, 0xff, 0xff, 0xf0}}}, | |
415 | /* /125 */ | |
416 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
417 | 0xff, 0xff, 0xff, 0xff, 0xf8}}}, | |
418 | /* /126 */ | |
419 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
420 | 0xff, 0xff, 0xff, 0xff, 0xfc}}}, | |
421 | /* /127 */ | |
422 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
423 | 0xff, 0xff, 0xff, 0xff, 0xfe}}}, | |
424 | /* /128 */ | |
425 | {{{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
426 | 0xff, 0xff, 0xff, 0xff, 0xff}}}}; | |
427 | ||
428 | /* Number of bits in prefix type. */ | |
429 | #ifndef PNBBY | |
430 | #define PNBBY 8 | |
431 | #endif /* PNBBY */ | |
432 | ||
433 | #define MASKBIT(offset) ((0xff << (PNBBY - (offset))) & 0xff) | |
434 | ||
435 | void prefix_hexdump(const struct prefix *p) | |
436 | { | |
437 | char buf[PREFIX_STRLEN]; | |
438 | ||
439 | zlog_debug("prefix: %s", | |
440 | prefix2str(p, buf, sizeof(buf))); | |
441 | zlog_hexdump(p, sizeof(struct prefix)); | |
442 | } | |
443 | ||
444 | int is_zero_mac(const struct ethaddr *mac) | |
445 | { | |
446 | int i = 0; | |
447 | ||
448 | for (i = 0; i < ETH_ALEN; i++) { | |
449 | if (mac->octet[i]) | |
450 | return 0; | |
451 | } | |
452 | ||
453 | return 1; | |
454 | } | |
455 | ||
456 | unsigned int prefix_bit(const uint8_t *prefix, const uint16_t prefixlen) | |
457 | { | |
458 | unsigned int offset = prefixlen / 8; | |
459 | unsigned int shift = 7 - (prefixlen % 8); | |
460 | ||
461 | return (prefix[offset] >> shift) & 1; | |
462 | } | |
463 | ||
464 | unsigned int prefix6_bit(const struct in6_addr *prefix, const uint16_t prefixlen) | |
465 | { | |
466 | return prefix_bit((const uint8_t *)&prefix->s6_addr, prefixlen); | |
467 | } | |
468 | ||
469 | int str2family(const char *string) | |
470 | { | |
471 | if (!strcmp("ipv4", string)) | |
472 | return AF_INET; | |
473 | else if (!strcmp("ipv6", string)) | |
474 | return AF_INET6; | |
475 | else if (!strcmp("ethernet", string)) | |
476 | return AF_ETHERNET; | |
477 | else if (!strcmp("evpn", string)) | |
478 | return AF_EVPN; | |
479 | return -1; | |
480 | } | |
481 | ||
482 | const char *family2str(int family) | |
483 | { | |
484 | switch (family) { | |
485 | case AF_INET: | |
486 | return "IPv4"; | |
487 | case AF_INET6: | |
488 | return "IPv6"; | |
489 | case AF_ETHERNET: | |
490 | return "Ethernet"; | |
491 | case AF_EVPN: | |
492 | return "Evpn"; | |
493 | } | |
494 | return "?"; | |
495 | } | |
496 | ||
497 | /* Address Famiy Identifier to Address Family converter. */ | |
498 | int afi2family(afi_t afi) | |
499 | { | |
500 | if (afi == AFI_IP) | |
501 | return AF_INET; | |
502 | else if (afi == AFI_IP6) | |
503 | return AF_INET6; | |
504 | else if (afi == AFI_L2VPN) | |
505 | return AF_ETHERNET; | |
506 | /* NOTE: EVPN code should NOT use this interface. */ | |
507 | return 0; | |
508 | } | |
509 | ||
510 | afi_t family2afi(int family) | |
511 | { | |
512 | if (family == AF_INET) | |
513 | return AFI_IP; | |
514 | else if (family == AF_INET6) | |
515 | return AFI_IP6; | |
516 | else if (family == AF_ETHERNET || family == AF_EVPN) | |
517 | return AFI_L2VPN; | |
518 | return 0; | |
519 | } | |
520 | ||
521 | const char *afi2str(afi_t afi) | |
522 | { | |
523 | switch (afi) { | |
524 | case AFI_IP: | |
525 | return "IPv4"; | |
526 | case AFI_IP6: | |
527 | return "IPv6"; | |
528 | case AFI_L2VPN: | |
529 | return "l2vpn"; | |
530 | case AFI_MAX: | |
531 | return "bad-value"; | |
532 | default: | |
533 | break; | |
534 | } | |
535 | return NULL; | |
536 | } | |
537 | ||
538 | const char *safi2str(safi_t safi) | |
539 | { | |
540 | switch (safi) { | |
541 | case SAFI_UNICAST: | |
542 | return "unicast"; | |
543 | case SAFI_MULTICAST: | |
544 | return "multicast"; | |
545 | case SAFI_MPLS_VPN: | |
546 | return "vpn"; | |
547 | case SAFI_ENCAP: | |
548 | return "encap"; | |
549 | case SAFI_EVPN: | |
550 | return "evpn"; | |
551 | case SAFI_LABELED_UNICAST: | |
552 | return "labeled-unicast"; | |
553 | case SAFI_FLOWSPEC: | |
554 | return "flowspec"; | |
555 | default: | |
556 | return "unknown"; | |
557 | } | |
558 | } | |
559 | ||
560 | /* If n includes p prefix then return 1 else return 0. */ | |
561 | int prefix_match(const struct prefix *n, const struct prefix *p) | |
562 | { | |
563 | int offset; | |
564 | int shift; | |
565 | const uint8_t *np, *pp; | |
566 | ||
567 | /* If n's prefix is longer than p's one return 0. */ | |
568 | if (n->prefixlen > p->prefixlen) | |
569 | return 0; | |
570 | ||
571 | if (n->family == AF_FLOWSPEC) { | |
572 | /* prefixlen is unused. look at fs prefix len */ | |
573 | if (n->u.prefix_flowspec.prefixlen > | |
574 | p->u.prefix_flowspec.prefixlen) | |
575 | return 0; | |
576 | ||
577 | /* Set both prefix's head pointer. */ | |
578 | np = (const uint8_t *)&n->u.prefix_flowspec.ptr; | |
579 | pp = (const uint8_t *)&p->u.prefix_flowspec.ptr; | |
580 | ||
581 | offset = n->u.prefix_flowspec.prefixlen; | |
582 | ||
583 | while (offset--) | |
584 | if (np[offset] != pp[offset]) | |
585 | return 0; | |
586 | return 1; | |
587 | } | |
588 | ||
589 | /* Set both prefix's head pointer. */ | |
590 | np = n->u.val; | |
591 | pp = p->u.val; | |
592 | ||
593 | offset = n->prefixlen / PNBBY; | |
594 | shift = n->prefixlen % PNBBY; | |
595 | ||
596 | if (shift) | |
597 | if (maskbit[shift] & (np[offset] ^ pp[offset])) | |
598 | return 0; | |
599 | ||
600 | while (offset--) | |
601 | if (np[offset] != pp[offset]) | |
602 | return 0; | |
603 | return 1; | |
604 | ||
605 | } | |
606 | ||
607 | /* | |
608 | * n is a type5 evpn prefix. This function tries to see if there is an | |
609 | * ip-prefix within n which matches prefix p | |
610 | * If n includes p prefix then return 1 else return 0. | |
611 | */ | |
612 | int evpn_type5_prefix_match(const struct prefix *n, const struct prefix *p) | |
613 | { | |
614 | int offset; | |
615 | int shift; | |
616 | int prefixlen; | |
617 | const uint8_t *np, *pp; | |
618 | struct prefix_evpn *evp; | |
619 | ||
620 | if (n->family != AF_EVPN) | |
621 | return 0; | |
622 | ||
623 | evp = (struct prefix_evpn *)n; | |
624 | pp = p->u.val; | |
625 | ||
626 | if ((evp->prefix.route_type != 5) || | |
627 | (p->family == AF_INET6 && !is_evpn_prefix_ipaddr_v6(evp)) || | |
628 | (p->family == AF_INET && !is_evpn_prefix_ipaddr_v4(evp)) || | |
629 | (is_evpn_prefix_ipaddr_none(evp))) | |
630 | return 0; | |
631 | ||
632 | prefixlen = evp->prefix.prefix_addr.ip_prefix_length; | |
633 | np = &evp->prefix.prefix_addr.ip.ip.addr; | |
634 | ||
635 | /* If n's prefix is longer than p's one return 0. */ | |
636 | if (prefixlen > p->prefixlen) | |
637 | return 0; | |
638 | ||
639 | offset = prefixlen / PNBBY; | |
640 | shift = prefixlen % PNBBY; | |
641 | ||
642 | if (shift) | |
643 | if (maskbit[shift] & (np[offset] ^ pp[offset])) | |
644 | return 0; | |
645 | ||
646 | while (offset--) | |
647 | if (np[offset] != pp[offset]) | |
648 | return 0; | |
649 | return 1; | |
650 | ||
651 | } | |
652 | ||
653 | /* If n includes p then return 1 else return 0. Prefix mask is not considered */ | |
654 | int prefix_match_network_statement(const struct prefix *n, | |
655 | const struct prefix *p) | |
656 | { | |
657 | int offset; | |
658 | int shift; | |
659 | const uint8_t *np, *pp; | |
660 | ||
661 | /* Set both prefix's head pointer. */ | |
662 | np = n->u.val; | |
663 | pp = p->u.val; | |
664 | ||
665 | offset = n->prefixlen / PNBBY; | |
666 | shift = n->prefixlen % PNBBY; | |
667 | ||
668 | if (shift) | |
669 | if (maskbit[shift] & (np[offset] ^ pp[offset])) | |
670 | return 0; | |
671 | ||
672 | while (offset--) | |
673 | if (np[offset] != pp[offset]) | |
674 | return 0; | |
675 | return 1; | |
676 | } | |
677 | ||
678 | #ifdef __clang_analyzer__ | |
679 | #undef prefix_copy /* cf. prefix.h */ | |
680 | #endif | |
681 | ||
682 | void prefix_copy(union prefixptr udest, union prefixconstptr usrc) | |
683 | { | |
684 | struct prefix *dest = udest.p; | |
685 | const struct prefix *src = usrc.p; | |
686 | ||
687 | dest->family = src->family; | |
688 | dest->prefixlen = src->prefixlen; | |
689 | ||
690 | if (src->family == AF_INET) | |
691 | dest->u.prefix4 = src->u.prefix4; | |
692 | else if (src->family == AF_INET6) | |
693 | dest->u.prefix6 = src->u.prefix6; | |
694 | else if (src->family == AF_ETHERNET) { | |
695 | memcpy(&dest->u.prefix_eth, &src->u.prefix_eth, | |
696 | sizeof(struct ethaddr)); | |
697 | } else if (src->family == AF_EVPN) { | |
698 | memcpy(&dest->u.prefix_evpn, &src->u.prefix_evpn, | |
699 | sizeof(struct evpn_addr)); | |
700 | } else if (src->family == AF_UNSPEC) { | |
701 | dest->u.lp.id = src->u.lp.id; | |
702 | dest->u.lp.adv_router = src->u.lp.adv_router; | |
703 | } else if (src->family == AF_FLOWSPEC) { | |
704 | void *temp; | |
705 | int len; | |
706 | ||
707 | len = src->u.prefix_flowspec.prefixlen; | |
708 | dest->u.prefix_flowspec.prefixlen = | |
709 | src->u.prefix_flowspec.prefixlen; | |
710 | dest->family = src->family; | |
711 | temp = XCALLOC(MTYPE_PREFIX_FLOWSPEC, len); | |
712 | dest->u.prefix_flowspec.ptr = (uintptr_t)temp; | |
713 | memcpy((void *)dest->u.prefix_flowspec.ptr, | |
714 | (void *)src->u.prefix_flowspec.ptr, len); | |
715 | } else { | |
716 | flog_err(EC_LIB_DEVELOPMENT, | |
717 | "prefix_copy(): Unknown address family %d", | |
718 | src->family); | |
719 | assert(0); | |
720 | } | |
721 | } | |
722 | ||
723 | /* | |
724 | * Return 1 if the address/netmask contained in the prefix structure | |
725 | * is the same, and else return 0. For this routine, 'same' requires | |
726 | * that not only the prefix length and the network part be the same, | |
727 | * but also the host part. Thus, 10.0.0.1/8 and 10.0.0.2/8 are not | |
728 | * the same. Note that this routine has the same return value sense | |
729 | * as '==' (which is different from prefix_cmp). | |
730 | */ | |
731 | int prefix_same(union prefixconstptr up1, union prefixconstptr up2) | |
732 | { | |
733 | const struct prefix *p1 = up1.p; | |
734 | const struct prefix *p2 = up2.p; | |
735 | ||
736 | if ((p1 && !p2) || (!p1 && p2)) | |
737 | return 0; | |
738 | ||
739 | if (!p1 && !p2) | |
740 | return 1; | |
741 | ||
742 | if (p1->family == p2->family && p1->prefixlen == p2->prefixlen) { | |
743 | if (p1->family == AF_INET) | |
744 | if (IPV4_ADDR_SAME(&p1->u.prefix4, &p2->u.prefix4)) | |
745 | return 1; | |
746 | if (p1->family == AF_INET6) | |
747 | if (IPV6_ADDR_SAME(&p1->u.prefix6.s6_addr, | |
748 | &p2->u.prefix6.s6_addr)) | |
749 | return 1; | |
750 | if (p1->family == AF_ETHERNET) | |
751 | if (!memcmp(&p1->u.prefix_eth, &p2->u.prefix_eth, | |
752 | sizeof(struct ethaddr))) | |
753 | return 1; | |
754 | if (p1->family == AF_EVPN) | |
755 | if (!memcmp(&p1->u.prefix_evpn, &p2->u.prefix_evpn, | |
756 | sizeof(struct evpn_addr))) | |
757 | return 1; | |
758 | if (p1->family == AF_FLOWSPEC) { | |
759 | if (p1->u.prefix_flowspec.prefixlen != | |
760 | p2->u.prefix_flowspec.prefixlen) | |
761 | return 0; | |
762 | if (!memcmp(&p1->u.prefix_flowspec.ptr, | |
763 | &p2->u.prefix_flowspec.ptr, | |
764 | p2->u.prefix_flowspec.prefixlen)) | |
765 | return 1; | |
766 | } | |
767 | } | |
768 | return 0; | |
769 | } | |
770 | ||
771 | /* | |
772 | * Return -1/0/1 comparing the prefixes in a way that gives a full/linear | |
773 | * order. | |
774 | * | |
775 | * Network prefixes are considered the same if the prefix lengths are equal | |
776 | * and the network parts are the same. Host bits (which are considered masked | |
777 | * by the prefix length) are not significant. Thus, 10.0.0.1/8 and | |
778 | * 10.0.0.2/8 are considered equivalent by this routine. Note that | |
779 | * this routine has the same return sense as strcmp (which is different | |
780 | * from prefix_same). | |
781 | */ | |
782 | int prefix_cmp(union prefixconstptr up1, union prefixconstptr up2) | |
783 | { | |
784 | const struct prefix *p1 = up1.p; | |
785 | const struct prefix *p2 = up2.p; | |
786 | int offset; | |
787 | int shift; | |
788 | int i; | |
789 | ||
790 | /* Set both prefix's head pointer. */ | |
791 | const uint8_t *pp1; | |
792 | const uint8_t *pp2; | |
793 | ||
794 | if (p1->family != p2->family) | |
795 | return numcmp(p1->family, p2->family); | |
796 | if (p1->family == AF_FLOWSPEC) { | |
797 | pp1 = (const uint8_t *)p1->u.prefix_flowspec.ptr; | |
798 | pp2 = (const uint8_t *)p2->u.prefix_flowspec.ptr; | |
799 | ||
800 | if (p1->u.prefix_flowspec.prefixlen != | |
801 | p2->u.prefix_flowspec.prefixlen) | |
802 | return numcmp(p1->u.prefix_flowspec.prefixlen, | |
803 | p2->u.prefix_flowspec.prefixlen); | |
804 | ||
805 | offset = p1->u.prefix_flowspec.prefixlen; | |
806 | while (offset--) | |
807 | if (pp1[offset] != pp2[offset]) | |
808 | return numcmp(pp1[offset], pp2[offset]); | |
809 | return 0; | |
810 | } | |
811 | pp1 = p1->u.val; | |
812 | pp2 = p2->u.val; | |
813 | ||
814 | if (p1->prefixlen != p2->prefixlen) | |
815 | return numcmp(p1->prefixlen, p2->prefixlen); | |
816 | offset = p1->prefixlen / PNBBY; | |
817 | shift = p1->prefixlen % PNBBY; | |
818 | ||
819 | i = memcmp(pp1, pp2, offset); | |
820 | if (i) | |
821 | return i; | |
822 | ||
823 | /* | |
824 | * At this point offset was the same, if we have shift | |
825 | * that means we still have data to compare, if shift is | |
826 | * 0 then we are at the end of the data structure | |
827 | * and should just return, as that we will be accessing | |
828 | * memory beyond the end of the party zone | |
829 | */ | |
830 | if (shift) | |
831 | return numcmp(pp1[offset] & maskbit[shift], | |
832 | pp2[offset] & maskbit[shift]); | |
833 | ||
834 | return 0; | |
835 | } | |
836 | ||
837 | /* | |
838 | * Count the number of common bits in 2 prefixes. The prefix length is | |
839 | * ignored for this function; the whole prefix is compared. If the prefix | |
840 | * address families don't match, return -1; otherwise the return value is | |
841 | * in range 0 ... maximum prefix length for the address family. | |
842 | */ | |
843 | int prefix_common_bits(const struct prefix *p1, const struct prefix *p2) | |
844 | { | |
845 | int pos, bit; | |
846 | int length = 0; | |
847 | uint8_t xor ; | |
848 | ||
849 | /* Set both prefix's head pointer. */ | |
850 | const uint8_t *pp1 = p1->u.val; | |
851 | const uint8_t *pp2 = p2->u.val; | |
852 | ||
853 | if (p1->family == AF_INET) | |
854 | length = IPV4_MAX_BYTELEN; | |
855 | if (p1->family == AF_INET6) | |
856 | length = IPV6_MAX_BYTELEN; | |
857 | if (p1->family == AF_ETHERNET) | |
858 | length = ETH_ALEN; | |
859 | if (p1->family == AF_EVPN) | |
860 | length = 8 * sizeof(struct evpn_addr); | |
861 | ||
862 | if (p1->family != p2->family || !length) | |
863 | return -1; | |
864 | ||
865 | for (pos = 0; pos < length; pos++) | |
866 | if (pp1[pos] != pp2[pos]) | |
867 | break; | |
868 | if (pos == length) | |
869 | return pos * 8; | |
870 | ||
871 | xor = pp1[pos] ^ pp2[pos]; | |
872 | for (bit = 0; bit < 8; bit++) | |
873 | if (xor&(1 << (7 - bit))) | |
874 | break; | |
875 | ||
876 | return pos * 8 + bit; | |
877 | } | |
878 | ||
879 | /* Return prefix family type string. */ | |
880 | const char *prefix_family_str(const struct prefix *p) | |
881 | { | |
882 | if (p->family == AF_INET) | |
883 | return "inet"; | |
884 | if (p->family == AF_INET6) | |
885 | return "inet6"; | |
886 | if (p->family == AF_ETHERNET) | |
887 | return "ether"; | |
888 | if (p->family == AF_EVPN) | |
889 | return "evpn"; | |
890 | return "unspec"; | |
891 | } | |
892 | ||
893 | /* Allocate new prefix_ipv4 structure. */ | |
894 | struct prefix_ipv4 *prefix_ipv4_new(void) | |
895 | { | |
896 | struct prefix_ipv4 *p; | |
897 | ||
898 | /* Call prefix_new to allocate a full-size struct prefix to avoid | |
899 | problems | |
900 | where the struct prefix_ipv4 is cast to struct prefix and unallocated | |
901 | bytes were being referenced (e.g. in structure assignments). */ | |
902 | p = (struct prefix_ipv4 *)prefix_new(); | |
903 | p->family = AF_INET; | |
904 | return p; | |
905 | } | |
906 | ||
907 | /* Free prefix_ipv4 structure. */ | |
908 | void prefix_ipv4_free(struct prefix_ipv4 *p) | |
909 | { | |
910 | prefix_free((struct prefix *)p); | |
911 | } | |
912 | ||
913 | /* If given string is valid return 1 else return 0 */ | |
914 | int str2prefix_ipv4(const char *str, struct prefix_ipv4 *p) | |
915 | { | |
916 | int ret; | |
917 | int plen; | |
918 | char *pnt; | |
919 | char *cp; | |
920 | ||
921 | /* Find slash inside string. */ | |
922 | pnt = strchr(str, '/'); | |
923 | ||
924 | /* String doesn't contail slash. */ | |
925 | if (pnt == NULL) { | |
926 | /* Convert string to prefix. */ | |
927 | ret = inet_pton(AF_INET, str, &p->prefix); | |
928 | if (ret == 0) | |
929 | return 0; | |
930 | ||
931 | /* If address doesn't contain slash we assume it host address. | |
932 | */ | |
933 | p->family = AF_INET; | |
934 | p->prefixlen = IPV4_MAX_BITLEN; | |
935 | ||
936 | return ret; | |
937 | } else { | |
938 | cp = XMALLOC(MTYPE_TMP, (pnt - str) + 1); | |
939 | memcpy(cp, str, pnt - str); | |
940 | *(cp + (pnt - str)) = '\0'; | |
941 | ret = inet_pton(AF_INET, cp, &p->prefix); | |
942 | XFREE(MTYPE_TMP, cp); | |
943 | if (ret == 0) | |
944 | return 0; | |
945 | ||
946 | /* Get prefix length. */ | |
947 | plen = (uint8_t)atoi(++pnt); | |
948 | if (plen > IPV4_MAX_PREFIXLEN) | |
949 | return 0; | |
950 | ||
951 | p->family = AF_INET; | |
952 | p->prefixlen = plen; | |
953 | } | |
954 | ||
955 | return ret; | |
956 | } | |
957 | ||
958 | /* When string format is invalid return 0. */ | |
959 | int str2prefix_eth(const char *str, struct prefix_eth *p) | |
960 | { | |
961 | int ret = 0; | |
962 | int plen = 48; | |
963 | char *pnt; | |
964 | char *cp = NULL; | |
965 | const char *str_addr = str; | |
966 | unsigned int a[6]; | |
967 | int i; | |
968 | bool slash = false; | |
969 | ||
970 | if (!strcmp(str, "any")) { | |
971 | memset(p, 0, sizeof(*p)); | |
972 | p->family = AF_ETHERNET; | |
973 | return 1; | |
974 | } | |
975 | ||
976 | /* Find slash inside string. */ | |
977 | pnt = strchr(str, '/'); | |
978 | ||
979 | if (pnt) { | |
980 | /* Get prefix length. */ | |
981 | plen = (uint8_t)atoi(++pnt); | |
982 | if (plen > 48) { | |
983 | ret = 0; | |
984 | goto done; | |
985 | } | |
986 | ||
987 | cp = XMALLOC(MTYPE_TMP, (pnt - str) + 1); | |
988 | memcpy(cp, str, pnt - str); | |
989 | *(cp + (pnt - str)) = '\0'; | |
990 | ||
991 | str_addr = cp; | |
992 | slash = true; | |
993 | } | |
994 | ||
995 | /* Convert string to prefix. */ | |
996 | if (sscanf(str_addr, "%2x:%2x:%2x:%2x:%2x:%2x", a + 0, a + 1, a + 2, | |
997 | a + 3, a + 4, a + 5) | |
998 | != 6) { | |
999 | ret = 0; | |
1000 | goto done; | |
1001 | } | |
1002 | for (i = 0; i < 6; ++i) { | |
1003 | p->eth_addr.octet[i] = a[i] & 0xff; | |
1004 | } | |
1005 | p->prefixlen = plen; | |
1006 | p->family = AF_ETHERNET; | |
1007 | ||
1008 | /* | |
1009 | * special case to allow old configurations to work | |
1010 | * Since all zero's is implicitly meant to allow | |
1011 | * a comparison to zero, let's assume | |
1012 | */ | |
1013 | if (!slash && is_zero_mac(&(p->eth_addr))) | |
1014 | p->prefixlen = 0; | |
1015 | ||
1016 | ret = 1; | |
1017 | ||
1018 | done: | |
1019 | XFREE(MTYPE_TMP, cp); | |
1020 | ||
1021 | return ret; | |
1022 | } | |
1023 | ||
1024 | /* Convert masklen into IP address's netmask (network byte order). */ | |
1025 | void masklen2ip(const int masklen, struct in_addr *netmask) | |
1026 | { | |
1027 | assert(masklen >= 0 && masklen <= IPV4_MAX_BITLEN); | |
1028 | ||
1029 | /* left shift is only defined for less than the size of the type. | |
1030 | * we unconditionally use long long in case the target platform | |
1031 | * has defined behaviour for << 32 (or has a 64-bit left shift) */ | |
1032 | ||
1033 | if (sizeof(unsigned long long) > 4) | |
1034 | netmask->s_addr = htonl(0xffffffffULL << (32 - masklen)); | |
1035 | else | |
1036 | netmask->s_addr = | |
1037 | htonl(masklen ? 0xffffffffU << (32 - masklen) : 0); | |
1038 | } | |
1039 | ||
1040 | /* Convert IP address's netmask into integer. We assume netmask is | |
1041 | * sequential one. Argument netmask should be network byte order. */ | |
1042 | uint8_t ip_masklen(struct in_addr netmask) | |
1043 | { | |
1044 | uint32_t tmp = ~ntohl(netmask.s_addr); | |
1045 | ||
1046 | /* | |
1047 | * clz: count leading zeroes. sadly, the behaviour of this builtin is | |
1048 | * undefined for a 0 argument, even though most CPUs give 32 | |
1049 | */ | |
1050 | return tmp ? __builtin_clz(tmp) : 32; | |
1051 | } | |
1052 | ||
1053 | /* Apply mask to IPv4 prefix (network byte order). */ | |
1054 | void apply_mask_ipv4(struct prefix_ipv4 *p) | |
1055 | { | |
1056 | struct in_addr mask; | |
1057 | masklen2ip(p->prefixlen, &mask); | |
1058 | p->prefix.s_addr &= mask.s_addr; | |
1059 | } | |
1060 | ||
1061 | /* If prefix is 0.0.0.0/0 then return 1 else return 0. */ | |
1062 | int prefix_ipv4_any(const struct prefix_ipv4 *p) | |
1063 | { | |
1064 | return (p->prefix.s_addr == 0 && p->prefixlen == 0); | |
1065 | } | |
1066 | ||
1067 | /* Allocate a new ip version 6 route */ | |
1068 | struct prefix_ipv6 *prefix_ipv6_new(void) | |
1069 | { | |
1070 | struct prefix_ipv6 *p; | |
1071 | ||
1072 | /* Allocate a full-size struct prefix to avoid problems with structure | |
1073 | size mismatches. */ | |
1074 | p = (struct prefix_ipv6 *)prefix_new(); | |
1075 | p->family = AF_INET6; | |
1076 | return p; | |
1077 | } | |
1078 | ||
1079 | /* Free prefix for IPv6. */ | |
1080 | void prefix_ipv6_free(struct prefix_ipv6 *p) | |
1081 | { | |
1082 | prefix_free((struct prefix *)p); | |
1083 | } | |
1084 | ||
1085 | /* If given string is valid return 1 else return 0 */ | |
1086 | int str2prefix_ipv6(const char *str, struct prefix_ipv6 *p) | |
1087 | { | |
1088 | char *pnt; | |
1089 | char *cp; | |
1090 | int ret; | |
1091 | ||
1092 | pnt = strchr(str, '/'); | |
1093 | ||
1094 | /* If string doesn't contain `/' treat it as host route. */ | |
1095 | if (pnt == NULL) { | |
1096 | ret = inet_pton(AF_INET6, str, &p->prefix); | |
1097 | if (ret == 0) | |
1098 | return 0; | |
1099 | p->prefixlen = IPV6_MAX_BITLEN; | |
1100 | } else { | |
1101 | int plen; | |
1102 | ||
1103 | cp = XMALLOC(MTYPE_TMP, (pnt - str) + 1); | |
1104 | memcpy(cp, str, pnt - str); | |
1105 | *(cp + (pnt - str)) = '\0'; | |
1106 | ret = inet_pton(AF_INET6, cp, &p->prefix); | |
1107 | XFREE(MTYPE_TMP, cp); | |
1108 | if (ret == 0) | |
1109 | return 0; | |
1110 | plen = (uint8_t)atoi(++pnt); | |
1111 | if (plen > IPV6_MAX_BITLEN) | |
1112 | return 0; | |
1113 | p->prefixlen = plen; | |
1114 | } | |
1115 | p->family = AF_INET6; | |
1116 | ||
1117 | return ret; | |
1118 | } | |
1119 | ||
1120 | /* Convert struct in6_addr netmask into integer. | |
1121 | * FIXME return uint8_t as ip_maskleni() does. */ | |
1122 | int ip6_masklen(struct in6_addr netmask) | |
1123 | { | |
1124 | int len = 0; | |
1125 | unsigned char val; | |
1126 | unsigned char *pnt; | |
1127 | ||
1128 | pnt = (unsigned char *)&netmask; | |
1129 | ||
1130 | while ((*pnt == 0xff) && len < IPV6_MAX_BITLEN) { | |
1131 | len += 8; | |
1132 | pnt++; | |
1133 | } | |
1134 | ||
1135 | if (len < IPV6_MAX_BITLEN) { | |
1136 | val = *pnt; | |
1137 | while (val) { | |
1138 | len++; | |
1139 | val <<= 1; | |
1140 | } | |
1141 | } | |
1142 | return len; | |
1143 | } | |
1144 | ||
1145 | void masklen2ip6(const int masklen, struct in6_addr *netmask) | |
1146 | { | |
1147 | assert(masklen >= 0 && masklen <= IPV6_MAX_BITLEN); | |
1148 | memcpy(netmask, maskbytes6 + masklen, sizeof(struct in6_addr)); | |
1149 | } | |
1150 | ||
1151 | void apply_mask_ipv6(struct prefix_ipv6 *p) | |
1152 | { | |
1153 | uint8_t *pnt; | |
1154 | int index; | |
1155 | int offset; | |
1156 | ||
1157 | index = p->prefixlen / 8; | |
1158 | ||
1159 | if (index < 16) { | |
1160 | pnt = (uint8_t *)&p->prefix; | |
1161 | offset = p->prefixlen % 8; | |
1162 | ||
1163 | pnt[index] &= maskbit[offset]; | |
1164 | index++; | |
1165 | ||
1166 | while (index < 16) | |
1167 | pnt[index++] = 0; | |
1168 | } | |
1169 | } | |
1170 | ||
1171 | void apply_mask(struct prefix *p) | |
1172 | { | |
1173 | switch (p->family) { | |
1174 | case AF_INET: | |
1175 | apply_mask_ipv4((struct prefix_ipv4 *)p); | |
1176 | break; | |
1177 | case AF_INET6: | |
1178 | apply_mask_ipv6((struct prefix_ipv6 *)p); | |
1179 | break; | |
1180 | default: | |
1181 | break; | |
1182 | } | |
1183 | return; | |
1184 | } | |
1185 | ||
1186 | /* Utility function of convert between struct prefix <=> union sockunion. | |
1187 | * FIXME This function isn't used anywhere. */ | |
1188 | struct prefix *sockunion2prefix(const union sockunion *dest, | |
1189 | const union sockunion *mask) | |
1190 | { | |
1191 | if (dest->sa.sa_family == AF_INET) { | |
1192 | struct prefix_ipv4 *p; | |
1193 | ||
1194 | p = prefix_ipv4_new(); | |
1195 | p->family = AF_INET; | |
1196 | p->prefix = dest->sin.sin_addr; | |
1197 | p->prefixlen = ip_masklen(mask->sin.sin_addr); | |
1198 | return (struct prefix *)p; | |
1199 | } | |
1200 | if (dest->sa.sa_family == AF_INET6) { | |
1201 | struct prefix_ipv6 *p; | |
1202 | ||
1203 | p = prefix_ipv6_new(); | |
1204 | p->family = AF_INET6; | |
1205 | p->prefixlen = ip6_masklen(mask->sin6.sin6_addr); | |
1206 | memcpy(&p->prefix, &dest->sin6.sin6_addr, | |
1207 | sizeof(struct in6_addr)); | |
1208 | return (struct prefix *)p; | |
1209 | } | |
1210 | return NULL; | |
1211 | } | |
1212 | ||
1213 | /* Utility function of convert between struct prefix <=> union sockunion. */ | |
1214 | struct prefix *sockunion2hostprefix(const union sockunion *su, | |
1215 | struct prefix *prefix) | |
1216 | { | |
1217 | if (su->sa.sa_family == AF_INET) { | |
1218 | struct prefix_ipv4 *p; | |
1219 | ||
1220 | p = prefix ? (struct prefix_ipv4 *)prefix : prefix_ipv4_new(); | |
1221 | p->family = AF_INET; | |
1222 | p->prefix = su->sin.sin_addr; | |
1223 | p->prefixlen = IPV4_MAX_BITLEN; | |
1224 | return (struct prefix *)p; | |
1225 | } | |
1226 | if (su->sa.sa_family == AF_INET6) { | |
1227 | struct prefix_ipv6 *p; | |
1228 | ||
1229 | p = prefix ? (struct prefix_ipv6 *)prefix : prefix_ipv6_new(); | |
1230 | p->family = AF_INET6; | |
1231 | p->prefixlen = IPV6_MAX_BITLEN; | |
1232 | memcpy(&p->prefix, &su->sin6.sin6_addr, | |
1233 | sizeof(struct in6_addr)); | |
1234 | return (struct prefix *)p; | |
1235 | } | |
1236 | return NULL; | |
1237 | } | |
1238 | ||
1239 | void prefix2sockunion(const struct prefix *p, union sockunion *su) | |
1240 | { | |
1241 | memset(su, 0, sizeof(*su)); | |
1242 | ||
1243 | su->sa.sa_family = p->family; | |
1244 | if (p->family == AF_INET) | |
1245 | su->sin.sin_addr = p->u.prefix4; | |
1246 | if (p->family == AF_INET6) | |
1247 | memcpy(&su->sin6.sin6_addr, &p->u.prefix6, | |
1248 | sizeof(struct in6_addr)); | |
1249 | } | |
1250 | ||
1251 | int prefix_blen(const struct prefix *p) | |
1252 | { | |
1253 | switch (p->family) { | |
1254 | case AF_INET: | |
1255 | return IPV4_MAX_BYTELEN; | |
1256 | break; | |
1257 | case AF_INET6: | |
1258 | return IPV6_MAX_BYTELEN; | |
1259 | break; | |
1260 | case AF_ETHERNET: | |
1261 | return ETH_ALEN; | |
1262 | break; | |
1263 | } | |
1264 | return 0; | |
1265 | } | |
1266 | ||
1267 | /* Generic function for conversion string to struct prefix. */ | |
1268 | int str2prefix(const char *str, struct prefix *p) | |
1269 | { | |
1270 | int ret; | |
1271 | ||
1272 | if (!str || !p) | |
1273 | return 0; | |
1274 | ||
1275 | /* First we try to convert string to struct prefix_ipv4. */ | |
1276 | ret = str2prefix_ipv4(str, (struct prefix_ipv4 *)p); | |
1277 | if (ret) | |
1278 | return ret; | |
1279 | ||
1280 | /* Next we try to convert string to struct prefix_ipv6. */ | |
1281 | ret = str2prefix_ipv6(str, (struct prefix_ipv6 *)p); | |
1282 | if (ret) | |
1283 | return ret; | |
1284 | ||
1285 | /* Next we try to convert string to struct prefix_eth. */ | |
1286 | ret = str2prefix_eth(str, (struct prefix_eth *)p); | |
1287 | if (ret) | |
1288 | return ret; | |
1289 | ||
1290 | return 0; | |
1291 | } | |
1292 | ||
1293 | static const char *prefixevpn_ead2str(const struct prefix_evpn *p, char *str, | |
1294 | int size) | |
1295 | { | |
1296 | snprintf(str, size, "Unsupported EVPN prefix"); | |
1297 | return str; | |
1298 | } | |
1299 | ||
1300 | static const char *prefixevpn_macip2str(const struct prefix_evpn *p, char *str, | |
1301 | int size) | |
1302 | { | |
1303 | uint8_t family; | |
1304 | char buf[PREFIX2STR_BUFFER]; | |
1305 | char buf2[ETHER_ADDR_STRLEN]; | |
1306 | ||
1307 | if (is_evpn_prefix_ipaddr_none(p)) | |
1308 | snprintf(str, size, "[%d]:[%s]/%d", | |
1309 | p->prefix.route_type, | |
1310 | prefix_mac2str(&p->prefix.macip_addr.mac, | |
1311 | buf2, sizeof(buf2)), | |
1312 | p->prefixlen); | |
1313 | else { | |
1314 | family = is_evpn_prefix_ipaddr_v4(p) | |
1315 | ? AF_INET | |
1316 | : AF_INET6; | |
1317 | snprintf(str, size, "[%d]:[%s]:[%s]/%d", | |
1318 | p->prefix.route_type, | |
1319 | prefix_mac2str(&p->prefix.macip_addr.mac, | |
1320 | buf2, sizeof(buf2)), | |
1321 | inet_ntop(family, | |
1322 | &p->prefix.macip_addr.ip.ip.addr, | |
1323 | buf, PREFIX2STR_BUFFER), | |
1324 | p->prefixlen); | |
1325 | } | |
1326 | return str; | |
1327 | } | |
1328 | ||
1329 | static const char *prefixevpn_imet2str(const struct prefix_evpn *p, char *str, | |
1330 | int size) | |
1331 | { | |
1332 | uint8_t family; | |
1333 | char buf[PREFIX2STR_BUFFER]; | |
1334 | ||
1335 | family = is_evpn_prefix_ipaddr_v4(p) | |
1336 | ? AF_INET | |
1337 | : AF_INET6; | |
1338 | snprintf(str, size, "[%d]:[%s]/%d", p->prefix.route_type, | |
1339 | inet_ntop(family, | |
1340 | &p->prefix.imet_addr.ip.ip.addr, buf, | |
1341 | PREFIX2STR_BUFFER), | |
1342 | p->prefixlen); | |
1343 | return str; | |
1344 | } | |
1345 | ||
1346 | static const char *prefixevpn_es2str(const struct prefix_evpn *p, char *str, | |
1347 | int size) | |
1348 | { | |
1349 | char buf[ESI_STR_LEN]; | |
1350 | ||
1351 | snprintf(str, size, "[%d]:[%s]:[%s]/%d", p->prefix.route_type, | |
1352 | esi_to_str(&p->prefix.es_addr.esi, buf, sizeof(buf)), | |
1353 | inet_ntoa(p->prefix.es_addr.ip.ipaddr_v4), | |
1354 | p->prefixlen); | |
1355 | return str; | |
1356 | } | |
1357 | ||
1358 | static const char *prefixevpn_prefix2str(const struct prefix_evpn *p, char *str, | |
1359 | int size) | |
1360 | { | |
1361 | uint8_t family; | |
1362 | char buf[PREFIX2STR_BUFFER]; | |
1363 | ||
1364 | family = is_evpn_prefix_ipaddr_v4(p) | |
1365 | ? AF_INET | |
1366 | : AF_INET6; | |
1367 | snprintf(str, size, "[%d]:[%u][%s/%d]/%d", | |
1368 | p->prefix.route_type, | |
1369 | p->prefix.prefix_addr.eth_tag, | |
1370 | inet_ntop(family, | |
1371 | &p->prefix.prefix_addr.ip.ip.addr, buf, | |
1372 | PREFIX2STR_BUFFER), | |
1373 | p->prefix.prefix_addr.ip_prefix_length, | |
1374 | p->prefixlen); | |
1375 | return str; | |
1376 | } | |
1377 | ||
1378 | static const char *prefixevpn2str(const struct prefix_evpn *p, char *str, | |
1379 | int size) | |
1380 | { | |
1381 | switch (p->prefix.route_type) { | |
1382 | case 1: | |
1383 | return prefixevpn_ead2str(p, str, size); | |
1384 | case 2: | |
1385 | return prefixevpn_macip2str(p, str, size); | |
1386 | case 3: | |
1387 | return prefixevpn_imet2str(p, str, size); | |
1388 | case 4: | |
1389 | return prefixevpn_es2str(p, str, size); | |
1390 | case 5: | |
1391 | return prefixevpn_prefix2str(p, str, size); | |
1392 | default: | |
1393 | snprintf(str, size, "Unsupported EVPN prefix"); | |
1394 | break; | |
1395 | } | |
1396 | return str; | |
1397 | } | |
1398 | ||
1399 | const char *prefix2str(union prefixconstptr pu, char *str, int size) | |
1400 | { | |
1401 | const struct prefix *p = pu.p; | |
1402 | char buf[PREFIX2STR_BUFFER]; | |
1403 | int byte, tmp, a, b; | |
1404 | bool z = false; | |
1405 | size_t l; | |
1406 | ||
1407 | switch (p->family) { | |
1408 | case AF_INET: | |
1409 | case AF_INET6: | |
1410 | inet_ntop(p->family, &p->u.prefix, buf, sizeof(buf)); | |
1411 | l = strlen(buf); | |
1412 | buf[l++] = '/'; | |
1413 | byte = p->prefixlen; | |
1414 | if ((tmp = p->prefixlen - 100) >= 0) { | |
1415 | buf[l++] = '1'; | |
1416 | z = true; | |
1417 | byte = tmp; | |
1418 | } | |
1419 | b = byte % 10; | |
1420 | a = byte / 10; | |
1421 | if (a || z) | |
1422 | buf[l++] = '0' + a; | |
1423 | buf[l++] = '0' + b; | |
1424 | buf[l] = '\0'; | |
1425 | strlcpy(str, buf, size); | |
1426 | break; | |
1427 | ||
1428 | case AF_ETHERNET: | |
1429 | snprintf(str, size, "%s/%d", | |
1430 | prefix_mac2str(&p->u.prefix_eth, buf, sizeof(buf)), | |
1431 | p->prefixlen); | |
1432 | break; | |
1433 | ||
1434 | case AF_EVPN: | |
1435 | prefixevpn2str((const struct prefix_evpn *)p, str, size); | |
1436 | break; | |
1437 | ||
1438 | case AF_FLOWSPEC: | |
1439 | strlcpy(str, "FS prefix", size); | |
1440 | break; | |
1441 | ||
1442 | default: | |
1443 | strlcpy(str, "UNK prefix", size); | |
1444 | break; | |
1445 | } | |
1446 | ||
1447 | return str; | |
1448 | } | |
1449 | ||
1450 | void prefix_mcast_inet4_dump(const char *onfail, struct in_addr addr, | |
1451 | char *buf, int buf_size) | |
1452 | { | |
1453 | int save_errno = errno; | |
1454 | ||
1455 | if (addr.s_addr == INADDR_ANY) | |
1456 | strlcpy(buf, "*", buf_size); | |
1457 | else { | |
1458 | if (!inet_ntop(AF_INET, &addr, buf, buf_size)) { | |
1459 | if (onfail) | |
1460 | snprintf(buf, buf_size, "%s", onfail); | |
1461 | } | |
1462 | } | |
1463 | ||
1464 | errno = save_errno; | |
1465 | } | |
1466 | ||
1467 | const char *prefix_sg2str(const struct prefix_sg *sg, char *sg_str) | |
1468 | { | |
1469 | char src_str[INET_ADDRSTRLEN]; | |
1470 | char grp_str[INET_ADDRSTRLEN]; | |
1471 | ||
1472 | prefix_mcast_inet4_dump("<src?>", sg->src, src_str, sizeof(src_str)); | |
1473 | prefix_mcast_inet4_dump("<grp?>", sg->grp, grp_str, sizeof(grp_str)); | |
1474 | snprintf(sg_str, PREFIX_SG_STR_LEN, "(%s,%s)", src_str, grp_str); | |
1475 | ||
1476 | return sg_str; | |
1477 | } | |
1478 | ||
1479 | struct prefix *prefix_new(void) | |
1480 | { | |
1481 | struct prefix *p; | |
1482 | ||
1483 | p = XCALLOC(MTYPE_PREFIX, sizeof *p); | |
1484 | return p; | |
1485 | } | |
1486 | ||
1487 | /* Free prefix structure. */ | |
1488 | void prefix_free(struct prefix *p) | |
1489 | { | |
1490 | XFREE(MTYPE_PREFIX, p); | |
1491 | } | |
1492 | ||
1493 | /* Utility function to convert ipv4 prefixes to Classful prefixes */ | |
1494 | void apply_classful_mask_ipv4(struct prefix_ipv4 *p) | |
1495 | { | |
1496 | ||
1497 | uint32_t destination; | |
1498 | ||
1499 | destination = ntohl(p->prefix.s_addr); | |
1500 | ||
1501 | if (p->prefixlen == IPV4_MAX_PREFIXLEN) | |
1502 | ; | |
1503 | /* do nothing for host routes */ | |
1504 | else if (IN_CLASSC(destination)) { | |
1505 | p->prefixlen = 24; | |
1506 | apply_mask_ipv4(p); | |
1507 | } else if (IN_CLASSB(destination)) { | |
1508 | p->prefixlen = 16; | |
1509 | apply_mask_ipv4(p); | |
1510 | } else { | |
1511 | p->prefixlen = 8; | |
1512 | apply_mask_ipv4(p); | |
1513 | } | |
1514 | } | |
1515 | ||
1516 | in_addr_t ipv4_network_addr(in_addr_t hostaddr, int masklen) | |
1517 | { | |
1518 | struct in_addr mask; | |
1519 | ||
1520 | masklen2ip(masklen, &mask); | |
1521 | return hostaddr & mask.s_addr; | |
1522 | } | |
1523 | ||
1524 | in_addr_t ipv4_broadcast_addr(in_addr_t hostaddr, int masklen) | |
1525 | { | |
1526 | struct in_addr mask; | |
1527 | ||
1528 | masklen2ip(masklen, &mask); | |
1529 | return (masklen != IPV4_MAX_PREFIXLEN - 1) ? | |
1530 | /* normal case */ | |
1531 | (hostaddr | ~mask.s_addr) | |
1532 | : | |
1533 | /* special case for /31 */ | |
1534 | (hostaddr ^ ~mask.s_addr); | |
1535 | } | |
1536 | ||
1537 | /* Utility function to convert ipv4 netmask to prefixes | |
1538 | ex.) "1.1.0.0" "255.255.0.0" => "1.1.0.0/16" | |
1539 | ex.) "1.0.0.0" NULL => "1.0.0.0/8" */ | |
1540 | int netmask_str2prefix_str(const char *net_str, const char *mask_str, | |
1541 | char *prefix_str) | |
1542 | { | |
1543 | struct in_addr network; | |
1544 | struct in_addr mask; | |
1545 | uint8_t prefixlen; | |
1546 | uint32_t destination; | |
1547 | int ret; | |
1548 | ||
1549 | ret = inet_aton(net_str, &network); | |
1550 | if (!ret) | |
1551 | return 0; | |
1552 | ||
1553 | if (mask_str) { | |
1554 | ret = inet_aton(mask_str, &mask); | |
1555 | if (!ret) | |
1556 | return 0; | |
1557 | ||
1558 | prefixlen = ip_masklen(mask); | |
1559 | } else { | |
1560 | destination = ntohl(network.s_addr); | |
1561 | ||
1562 | if (network.s_addr == 0) | |
1563 | prefixlen = 0; | |
1564 | else if (IN_CLASSC(destination)) | |
1565 | prefixlen = 24; | |
1566 | else if (IN_CLASSB(destination)) | |
1567 | prefixlen = 16; | |
1568 | else if (IN_CLASSA(destination)) | |
1569 | prefixlen = 8; | |
1570 | else | |
1571 | return 0; | |
1572 | } | |
1573 | ||
1574 | sprintf(prefix_str, "%s/%d", net_str, prefixlen); | |
1575 | ||
1576 | return 1; | |
1577 | } | |
1578 | ||
1579 | /* Utility function for making IPv6 address string. */ | |
1580 | const char *inet6_ntoa(struct in6_addr addr) | |
1581 | { | |
1582 | static char buf[INET6_ADDRSTRLEN]; | |
1583 | ||
1584 | inet_ntop(AF_INET6, &addr, buf, INET6_ADDRSTRLEN); | |
1585 | return buf; | |
1586 | } | |
1587 | ||
1588 | /* converts to internal representation of mac address | |
1589 | * returns 1 on success, 0 otherwise | |
1590 | * format accepted: AA:BB:CC:DD:EE:FF | |
1591 | * if mac parameter is null, then check only | |
1592 | */ | |
1593 | int prefix_str2mac(const char *str, struct ethaddr *mac) | |
1594 | { | |
1595 | unsigned int a[6]; | |
1596 | int i; | |
1597 | ||
1598 | if (!str) | |
1599 | return 0; | |
1600 | ||
1601 | if (sscanf(str, "%2x:%2x:%2x:%2x:%2x:%2x", a + 0, a + 1, a + 2, a + 3, | |
1602 | a + 4, a + 5) | |
1603 | != 6) { | |
1604 | /* error in incoming str length */ | |
1605 | return 0; | |
1606 | } | |
1607 | /* valid mac address */ | |
1608 | if (!mac) | |
1609 | return 1; | |
1610 | for (i = 0; i < 6; ++i) | |
1611 | mac->octet[i] = a[i] & 0xff; | |
1612 | return 1; | |
1613 | } | |
1614 | ||
1615 | char *prefix_mac2str(const struct ethaddr *mac, char *buf, int size) | |
1616 | { | |
1617 | char *ptr; | |
1618 | ||
1619 | if (!mac) | |
1620 | return NULL; | |
1621 | if (!buf) | |
1622 | ptr = XMALLOC(MTYPE_TMP, ETHER_ADDR_STRLEN * sizeof(char)); | |
1623 | else { | |
1624 | assert(size >= ETHER_ADDR_STRLEN); | |
1625 | ptr = buf; | |
1626 | } | |
1627 | snprintf(ptr, (ETHER_ADDR_STRLEN), "%02x:%02x:%02x:%02x:%02x:%02x", | |
1628 | (uint8_t)mac->octet[0], (uint8_t)mac->octet[1], | |
1629 | (uint8_t)mac->octet[2], (uint8_t)mac->octet[3], | |
1630 | (uint8_t)mac->octet[4], (uint8_t)mac->octet[5]); | |
1631 | return ptr; | |
1632 | } | |
1633 | ||
1634 | unsigned prefix_hash_key(const void *pp) | |
1635 | { | |
1636 | struct prefix copy; | |
1637 | ||
1638 | if (((struct prefix *)pp)->family == AF_FLOWSPEC) { | |
1639 | uint32_t len; | |
1640 | void *temp; | |
1641 | ||
1642 | /* make sure *all* unused bits are zero, | |
1643 | * particularly including alignment / | |
1644 | * padding and unused prefix bytes. | |
1645 | */ | |
1646 | memset(©, 0, sizeof(copy)); | |
1647 | prefix_copy(©, (struct prefix *)pp); | |
1648 | len = jhash((void *)copy.u.prefix_flowspec.ptr, | |
1649 | copy.u.prefix_flowspec.prefixlen, | |
1650 | 0x55aa5a5a); | |
1651 | temp = (void *)copy.u.prefix_flowspec.ptr; | |
1652 | XFREE(MTYPE_PREFIX_FLOWSPEC, temp); | |
1653 | copy.u.prefix_flowspec.ptr = (uintptr_t)NULL; | |
1654 | return len; | |
1655 | } | |
1656 | /* make sure *all* unused bits are zero, particularly including | |
1657 | * alignment / | |
1658 | * padding and unused prefix bytes. */ | |
1659 | memset(©, 0, sizeof(copy)); | |
1660 | prefix_copy(©, (struct prefix *)pp); | |
1661 | return jhash(©, | |
1662 | offsetof(struct prefix, u.prefix) + PSIZE(copy.prefixlen), | |
1663 | 0x55aa5a5a); | |
1664 | } | |
1665 | ||
1666 | /* converts to internal representation of esi | |
1667 | * returns 1 on success, 0 otherwise | |
1668 | * format accepted: aa:aa:aa:aa:aa:aa:aa:aa:aa:aa | |
1669 | * if esi parameter is null, then check only | |
1670 | */ | |
1671 | int str_to_esi(const char *str, esi_t *esi) | |
1672 | { | |
1673 | int i; | |
1674 | unsigned int a[ESI_BYTES]; | |
1675 | ||
1676 | if (!str) | |
1677 | return 0; | |
1678 | ||
1679 | if (sscanf(str, "%2x:%2x:%2x:%2x:%2x:%2x:%2x:%2x:%2x:%2x", | |
1680 | a + 0, a + 1, a + 2, a + 3, | |
1681 | a + 4, a + 5, a + 6, a + 7, | |
1682 | a + 8, a + 9) | |
1683 | != ESI_BYTES) { | |
1684 | /* error in incoming str length */ | |
1685 | return 0; | |
1686 | } | |
1687 | ||
1688 | /* valid ESI */ | |
1689 | if (!esi) | |
1690 | return 1; | |
1691 | for (i = 0; i < ESI_BYTES; ++i) | |
1692 | esi->val[i] = a[i] & 0xff; | |
1693 | return 1; | |
1694 | } | |
1695 | ||
1696 | char *esi_to_str(const esi_t *esi, char *buf, int size) | |
1697 | { | |
1698 | char *ptr; | |
1699 | ||
1700 | if (!esi) | |
1701 | return NULL; | |
1702 | if (!buf) | |
1703 | ptr = XMALLOC(MTYPE_TMP, ESI_STR_LEN * sizeof(char)); | |
1704 | else { | |
1705 | assert(size >= ESI_STR_LEN); | |
1706 | ptr = buf; | |
1707 | } | |
1708 | ||
1709 | snprintf(ptr, ESI_STR_LEN, | |
1710 | "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", | |
1711 | esi->val[0], esi->val[1], esi->val[2], | |
1712 | esi->val[3], esi->val[4], esi->val[5], | |
1713 | esi->val[6], esi->val[7], esi->val[8], | |
1714 | esi->val[9]); | |
1715 | return ptr; | |
1716 | } | |
1717 | ||
1718 | printfrr_ext_autoreg_p("I4", printfrr_i4) | |
1719 | static ssize_t printfrr_i4(char *buf, size_t bsz, const char *fmt, | |
1720 | int prec, const void *ptr) | |
1721 | { | |
1722 | inet_ntop(AF_INET, ptr, buf, bsz); | |
1723 | return 2; | |
1724 | } | |
1725 | ||
1726 | printfrr_ext_autoreg_p("I6", printfrr_i6) | |
1727 | static ssize_t printfrr_i6(char *buf, size_t bsz, const char *fmt, | |
1728 | int prec, const void *ptr) | |
1729 | { | |
1730 | inet_ntop(AF_INET6, ptr, buf, bsz); | |
1731 | return 2; | |
1732 | } | |
1733 | ||
1734 | printfrr_ext_autoreg_p("FX", printfrr_pfx) | |
1735 | static ssize_t printfrr_pfx(char *buf, size_t bsz, const char *fmt, | |
1736 | int prec, const void *ptr) | |
1737 | { | |
1738 | prefix2str(ptr, buf, bsz); | |
1739 | return 2; | |
1740 | } | |
1741 | ||
1742 | printfrr_ext_autoreg_p("SG4", printfrr_psg) | |
1743 | static ssize_t printfrr_psg(char *buf, size_t bsz, const char *fmt, | |
1744 | int prec, const void *ptr) | |
1745 | { | |
1746 | const struct prefix_sg *sg = ptr; | |
1747 | struct fbuf fb = { .buf = buf, .pos = buf, .len = bsz - 1 }; | |
1748 | ||
1749 | if (sg->src.s_addr == INADDR_ANY) | |
1750 | bprintfrr(&fb, "(*,"); | |
1751 | else | |
1752 | bprintfrr(&fb, "(%pI4,", &sg->src); | |
1753 | ||
1754 | if (sg->grp.s_addr == INADDR_ANY) | |
1755 | bprintfrr(&fb, "*)"); | |
1756 | else | |
1757 | bprintfrr(&fb, "%pI4)", &sg->grp); | |
1758 | ||
1759 | fb.pos[0] = '\0'; | |
1760 | return 3; | |
1761 | } |