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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 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with GNU Zebra; see the file COPYING. If not, write to the Free | |
19 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
20 | * 02111-1307, USA. | |
21 | */ | |
22 | ||
23 | #include <zebra.h> | |
24 | ||
25 | #include "prefix.h" | |
26 | #include "vty.h" | |
27 | #include "sockunion.h" | |
28 | #include "memory.h" | |
29 | #include "log.h" | |
6b0655a2 | 30 | |
4a1ab8e4 DL |
31 | DEFINE_MTYPE_STATIC(LIB, PREFIX, "Prefix") |
32 | ||
718e3744 | 33 | /* Maskbit. */ |
2d362d10 | 34 | static const u_char maskbit[] = {0x00, 0x80, 0xc0, 0xe0, 0xf0, |
718e3744 | 35 | 0xf8, 0xfc, 0xfe, 0xff}; |
fe67e668 | 36 | |
21f569e3 DO |
37 | static const struct in6_addr maskbytes6[] = |
38 | { | |
39 | /* /0 */ { { { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
40 | /* /1 */ { { { 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
41 | /* /2 */ { { { 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
42 | /* /3 */ { { { 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
43 | /* /4 */ { { { 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
44 | /* /5 */ { { { 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
45 | /* /6 */ { { { 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
46 | /* /7 */ { { { 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
47 | /* /8 */ { { { 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
48 | /* /9 */ { { { 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
49 | /* /10 */ { { { 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
50 | /* /11 */ { { { 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
51 | /* /12 */ { { { 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
52 | /* /13 */ { { { 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
53 | /* /14 */ { { { 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
54 | /* /15 */ { { { 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
55 | /* /16 */ { { { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
56 | /* /17 */ { { { 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
57 | /* /18 */ { { { 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
58 | /* /19 */ { { { 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
59 | /* /20 */ { { { 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
60 | /* /21 */ { { { 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
61 | /* /22 */ { { { 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
62 | /* /23 */ { { { 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
63 | /* /24 */ { { { 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
64 | /* /25 */ { { { 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
65 | /* /26 */ { { { 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
66 | /* /27 */ { { { 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
67 | /* /28 */ { { { 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
68 | /* /29 */ { { { 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
69 | /* /30 */ { { { 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
70 | /* /31 */ { { { 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
71 | /* /32 */ { { { 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
72 | /* /33 */ { { { 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
73 | /* /34 */ { { { 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
74 | /* /35 */ { { { 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
75 | /* /36 */ { { { 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
76 | /* /37 */ { { { 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
77 | /* /38 */ { { { 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
78 | /* /39 */ { { { 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
79 | /* /40 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
80 | /* /41 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
81 | /* /42 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
82 | /* /43 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
83 | /* /44 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
84 | /* /45 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
85 | /* /46 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
86 | /* /47 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
87 | /* /48 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
88 | /* /49 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
89 | /* /50 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
90 | /* /51 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
91 | /* /52 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
92 | /* /53 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
93 | /* /54 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
94 | /* /55 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
95 | /* /56 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
96 | /* /57 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
97 | /* /58 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
98 | /* /59 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
99 | /* /60 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
100 | /* /61 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
101 | /* /62 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
102 | /* /63 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
103 | /* /64 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
104 | /* /65 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
105 | /* /66 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
106 | /* /67 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
107 | /* /68 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
108 | /* /69 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
109 | /* /70 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
110 | /* /71 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
111 | /* /72 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
112 | /* /73 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
113 | /* /74 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
114 | /* /75 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
115 | /* /76 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
116 | /* /77 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
117 | /* /78 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
118 | /* /79 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
119 | /* /80 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
120 | /* /81 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
121 | /* /82 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
122 | /* /83 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
123 | /* /84 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
124 | /* /85 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
125 | /* /86 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
126 | /* /87 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
127 | /* /88 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
128 | /* /89 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00 } } }, | |
129 | /* /90 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00 } } }, | |
130 | /* /91 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00 } } }, | |
131 | /* /92 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00 } } }, | |
132 | /* /93 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00 } } }, | |
133 | /* /94 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00 } } }, | |
134 | /* /95 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00 } } }, | |
135 | /* /96 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 } } }, | |
136 | /* /97 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00 } } }, | |
137 | /* /98 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00 } } }, | |
138 | /* /99 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00 } } }, | |
139 | /* /100 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00 } } }, | |
140 | /* /101 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00 } } }, | |
141 | /* /102 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00 } } }, | |
142 | /* /103 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00 } } }, | |
143 | /* /104 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00 } } }, | |
144 | /* /105 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00 } } }, | |
145 | /* /106 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00 } } }, | |
146 | /* /107 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00 } } }, | |
147 | /* /108 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00 } } }, | |
148 | /* /109 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00 } } }, | |
149 | /* /110 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00 } } }, | |
150 | /* /111 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00 } } }, | |
151 | /* /112 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00 } } }, | |
152 | /* /113 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00 } } }, | |
153 | /* /114 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00 } } }, | |
154 | /* /115 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00 } } }, | |
155 | /* /116 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00 } } }, | |
156 | /* /117 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00 } } }, | |
157 | /* /118 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00 } } }, | |
158 | /* /119 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00 } } }, | |
159 | /* /120 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00 } } }, | |
160 | /* /121 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80 } } }, | |
161 | /* /122 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0 } } }, | |
162 | /* /123 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0 } } }, | |
163 | /* /124 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0 } } }, | |
164 | /* /125 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8 } } }, | |
165 | /* /126 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc } } }, | |
166 | /* /127 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe } } }, | |
167 | /* /128 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } } } | |
168 | }; | |
718e3744 | 169 | |
170 | /* Number of bits in prefix type. */ | |
171 | #ifndef PNBBY | |
172 | #define PNBBY 8 | |
173 | #endif /* PNBBY */ | |
174 | ||
175 | #define MASKBIT(offset) ((0xff << (PNBBY - (offset))) & 0xff) | |
176 | ||
f63f06da PJ |
177 | unsigned int |
178 | prefix_bit (const u_char *prefix, const u_char prefixlen) | |
179 | { | |
180 | unsigned int offset = prefixlen / 8; | |
181 | unsigned int shift = 7 - (prefixlen % 8); | |
182 | ||
183 | return (prefix[offset] >> shift) & 1; | |
184 | } | |
185 | ||
186 | unsigned int | |
187 | prefix6_bit (const struct in6_addr *prefix, const u_char prefixlen) | |
188 | { | |
189 | return prefix_bit((const u_char *) &prefix->s6_addr, prefixlen); | |
190 | } | |
6b0655a2 | 191 | |
f3ccedaa CF |
192 | int |
193 | str2family(const char *string) | |
194 | { | |
195 | if (!strcmp("ipv4", string)) | |
196 | return AF_INET; | |
197 | else if (!strcmp("ipv6", string)) | |
198 | return AF_INET6; | |
32ac65d9 LB |
199 | else if (!strcmp("ethernet", string)) |
200 | return AF_ETHERNET; | |
201 | return -1; | |
f3ccedaa CF |
202 | } |
203 | ||
718e3744 | 204 | /* Address Famiy Identifier to Address Family converter. */ |
205 | int | |
4c9641ba | 206 | afi2family (afi_t afi) |
718e3744 | 207 | { |
208 | if (afi == AFI_IP) | |
209 | return AF_INET; | |
718e3744 | 210 | else if (afi == AFI_IP6) |
211 | return AF_INET6; | |
fd6c6cb4 | 212 | else if (afi == AFI_L2VPN) |
32ac65d9 | 213 | return AF_ETHERNET; |
718e3744 | 214 | return 0; |
215 | } | |
216 | ||
4c9641ba | 217 | afi_t |
718e3744 | 218 | family2afi (int family) |
219 | { | |
220 | if (family == AF_INET) | |
221 | return AFI_IP; | |
718e3744 | 222 | else if (family == AF_INET6) |
223 | return AFI_IP6; | |
32ac65d9 | 224 | else if (family == AF_ETHERNET) |
fd6c6cb4 | 225 | return AFI_L2VPN; |
718e3744 | 226 | return 0; |
227 | } | |
228 | ||
32ac65d9 LB |
229 | const char * |
230 | afi2str(afi_t afi) | |
231 | { | |
232 | switch (afi) { | |
233 | case AFI_IP: | |
234 | return "IPv4"; | |
235 | case AFI_IP6: | |
236 | return "IPv6"; | |
924bf71c PG |
237 | case AFI_L2VPN: |
238 | return "l2vpn"; | |
65efcfce LB |
239 | case AFI_MAX: |
240 | return "bad-value"; | |
32ac65d9 LB |
241 | default: |
242 | break; | |
243 | } | |
244 | return NULL; | |
245 | } | |
246 | ||
1ec23d90 LB |
247 | const char * |
248 | safi2str(safi_t safi) | |
249 | { | |
250 | switch (safi) { | |
251 | case SAFI_UNICAST: | |
252 | return "unicast"; | |
253 | case SAFI_MULTICAST: | |
254 | return "multicast"; | |
255 | case SAFI_ENCAP: | |
256 | return "encap"; | |
257 | case SAFI_MPLS_VPN: | |
258 | return "vpn"; | |
924bf71c PG |
259 | case SAFI_EVPN: |
260 | return "evpn"; | |
1ec23d90 LB |
261 | } |
262 | return NULL; | |
263 | } | |
264 | ||
718e3744 | 265 | /* If n includes p prefix then return 1 else return 0. */ |
266 | int | |
b04c699e | 267 | prefix_match (const struct prefix *n, const struct prefix *p) |
718e3744 | 268 | { |
269 | int offset; | |
270 | int shift; | |
d3583447 | 271 | const u_char *np, *pp; |
718e3744 | 272 | |
273 | /* If n's prefix is longer than p's one return 0. */ | |
274 | if (n->prefixlen > p->prefixlen) | |
275 | return 0; | |
276 | ||
d3583447 PJ |
277 | /* Set both prefix's head pointer. */ |
278 | np = (const u_char *)&n->u.prefix; | |
279 | pp = (const u_char *)&p->u.prefix; | |
280 | ||
718e3744 | 281 | offset = n->prefixlen / PNBBY; |
282 | shift = n->prefixlen % PNBBY; | |
283 | ||
284 | if (shift) | |
285 | if (maskbit[shift] & (np[offset] ^ pp[offset])) | |
286 | return 0; | |
287 | ||
288 | while (offset--) | |
289 | if (np[offset] != pp[offset]) | |
290 | return 0; | |
291 | return 1; | |
292 | } | |
293 | ||
294 | /* Copy prefix from src to dest. */ | |
295 | void | |
b04c699e | 296 | prefix_copy (struct prefix *dest, const struct prefix *src) |
718e3744 | 297 | { |
298 | dest->family = src->family; | |
299 | dest->prefixlen = src->prefixlen; | |
300 | ||
301 | if (src->family == AF_INET) | |
302 | dest->u.prefix4 = src->u.prefix4; | |
718e3744 | 303 | else if (src->family == AF_INET6) |
304 | dest->u.prefix6 = src->u.prefix6; | |
fd6c6cb4 | 305 | else if (src->family == AF_ETHERNET) |
306 | { | |
307 | memcpy (&dest->u.prefix_evpn, &src->u.prefix_evpn, sizeof (struct evpn_addr)); | |
308 | } | |
718e3744 | 309 | else if (src->family == AF_UNSPEC) |
310 | { | |
311 | dest->u.lp.id = src->u.lp.id; | |
312 | dest->u.lp.adv_router = src->u.lp.adv_router; | |
313 | } | |
314 | else | |
315 | { | |
4525281a | 316 | zlog_err("prefix_copy(): Unknown address family %d", src->family); |
718e3744 | 317 | assert (0); |
318 | } | |
319 | } | |
320 | ||
9d24baaa | 321 | /* |
322 | * Return 1 if the address/netmask contained in the prefix structure | |
323 | * is the same, and else return 0. For this routine, 'same' requires | |
324 | * that not only the prefix length and the network part be the same, | |
325 | * but also the host part. Thus, 10.0.0.1/8 and 10.0.0.2/8 are not | |
326 | * the same. Note that this routine has the same return value sense | |
327 | * as '==' (which is different from prefix_cmp). | |
328 | */ | |
718e3744 | 329 | int |
b04c699e | 330 | prefix_same (const struct prefix *p1, const struct prefix *p2) |
718e3744 | 331 | { |
c5f7794f DS |
332 | if ((p1 && !p2) || (!p1 && p2)) |
333 | return 0; | |
334 | ||
335 | if (!p1 && !p2) | |
336 | return 1; | |
337 | ||
718e3744 | 338 | if (p1->family == p2->family && p1->prefixlen == p2->prefixlen) |
339 | { | |
340 | if (p1->family == AF_INET) | |
fe40bfa2 | 341 | if (IPV4_ADDR_SAME (&p1->u.prefix4.s_addr, &p2->u.prefix4.s_addr)) |
718e3744 | 342 | return 1; |
718e3744 | 343 | if (p1->family == AF_INET6 ) |
fe40bfa2 | 344 | if (IPV6_ADDR_SAME (&p1->u.prefix6.s6_addr, &p2->u.prefix6.s6_addr)) |
718e3744 | 345 | return 1; |
fd6c6cb4 | 346 | if (p1->family == AF_ETHERNET ) |
347 | if (!memcmp (&p1->u.prefix_evpn, &p2->u.prefix_evpn, sizeof (struct evpn_addr))) | |
348 | return 1; | |
718e3744 | 349 | } |
350 | return 0; | |
351 | } | |
352 | ||
9d24baaa | 353 | /* |
354 | * Return 0 if the network prefixes represented by the struct prefix | |
355 | * arguments are the same prefix, and 1 otherwise. Network prefixes | |
356 | * are considered the same if the prefix lengths are equal and the | |
357 | * network parts are the same. Host bits (which are considered masked | |
358 | * by the prefix length) are not significant. Thus, 10.0.0.1/8 and | |
359 | * 10.0.0.2/8 are considered equivalent by this routine. Note that | |
360 | * this routine has the same return sense as strcmp (which is different | |
361 | * from prefix_same). | |
362 | */ | |
718e3744 | 363 | int |
b04c699e | 364 | prefix_cmp (const struct prefix *p1, const struct prefix *p2) |
718e3744 | 365 | { |
366 | int offset; | |
367 | int shift; | |
368 | ||
369 | /* Set both prefix's head pointer. */ | |
8cc4198f | 370 | const u_char *pp1 = (const u_char *)&p1->u.prefix; |
371 | const u_char *pp2 = (const u_char *)&p2->u.prefix; | |
718e3744 | 372 | |
373 | if (p1->family != p2->family || p1->prefixlen != p2->prefixlen) | |
374 | return 1; | |
375 | ||
9ed79b53 DO |
376 | offset = p1->prefixlen / PNBBY; |
377 | shift = p1->prefixlen % PNBBY; | |
718e3744 | 378 | |
379 | if (shift) | |
380 | if (maskbit[shift] & (pp1[offset] ^ pp2[offset])) | |
381 | return 1; | |
382 | ||
383 | while (offset--) | |
384 | if (pp1[offset] != pp2[offset]) | |
385 | return 1; | |
386 | ||
387 | return 0; | |
388 | } | |
389 | ||
17e52061 DL |
390 | /* |
391 | * Count the number of common bits in 2 prefixes. The prefix length is | |
392 | * ignored for this function; the whole prefix is compared. If the prefix | |
393 | * address families don't match, return -1; otherwise the return value is | |
394 | * in range 0 ... maximum prefix length for the address family. | |
395 | */ | |
396 | int | |
397 | prefix_common_bits (const struct prefix *p1, const struct prefix *p2) | |
398 | { | |
399 | int pos, bit; | |
400 | int length = 0; | |
401 | u_char xor; | |
402 | ||
403 | /* Set both prefix's head pointer. */ | |
404 | const u_char *pp1 = (const u_char *)&p1->u.prefix; | |
405 | const u_char *pp2 = (const u_char *)&p2->u.prefix; | |
406 | ||
407 | if (p1->family == AF_INET) | |
408 | length = IPV4_MAX_BYTELEN; | |
17e52061 DL |
409 | if (p1->family == AF_INET6) |
410 | length = IPV6_MAX_BYTELEN; | |
fd6c6cb4 | 411 | if (p1->family == AF_ETHERNET) |
412 | length = 8 * sizeof (struct evpn_addr); | |
413 | ||
17e52061 DL |
414 | if (p1->family != p2->family || !length) |
415 | return -1; | |
416 | ||
417 | for (pos = 0; pos < length; pos++) | |
418 | if (pp1[pos] != pp2[pos]) | |
419 | break; | |
420 | if (pos == length) | |
421 | return pos * 8; | |
422 | ||
423 | xor = pp1[pos] ^ pp2[pos]; | |
424 | for (bit = 0; bit < 8; bit++) | |
425 | if (xor & (1 << (7 - bit))) | |
426 | break; | |
427 | ||
428 | return pos * 8 + bit; | |
429 | } | |
430 | ||
718e3744 | 431 | /* Return prefix family type string. */ |
b04c699e | 432 | const char * |
433 | prefix_family_str (const struct prefix *p) | |
718e3744 | 434 | { |
435 | if (p->family == AF_INET) | |
436 | return "inet"; | |
718e3744 | 437 | if (p->family == AF_INET6) |
438 | return "inet6"; | |
32ac65d9 LB |
439 | if (p->family == AF_ETHERNET) |
440 | return "ether"; | |
718e3744 | 441 | return "unspec"; |
442 | } | |
443 | ||
444 | /* Allocate new prefix_ipv4 structure. */ | |
445 | struct prefix_ipv4 * | |
446 | prefix_ipv4_new () | |
447 | { | |
448 | struct prefix_ipv4 *p; | |
449 | ||
7907c6c9 | 450 | /* Call prefix_new to allocate a full-size struct prefix to avoid problems |
451 | where the struct prefix_ipv4 is cast to struct prefix and unallocated | |
452 | bytes were being referenced (e.g. in structure assignments). */ | |
453 | p = (struct prefix_ipv4 *)prefix_new(); | |
718e3744 | 454 | p->family = AF_INET; |
455 | return p; | |
456 | } | |
457 | ||
458 | /* Free prefix_ipv4 structure. */ | |
459 | void | |
460 | prefix_ipv4_free (struct prefix_ipv4 *p) | |
461 | { | |
7907c6c9 | 462 | prefix_free((struct prefix *)p); |
718e3744 | 463 | } |
464 | ||
465 | /* When string format is invalid return 0. */ | |
466 | int | |
b04c699e | 467 | str2prefix_ipv4 (const char *str, struct prefix_ipv4 *p) |
718e3744 | 468 | { |
469 | int ret; | |
470 | int plen; | |
471 | char *pnt; | |
472 | char *cp; | |
473 | ||
474 | /* Find slash inside string. */ | |
475 | pnt = strchr (str, '/'); | |
476 | ||
477 | /* String doesn't contail slash. */ | |
478 | if (pnt == NULL) | |
479 | { | |
480 | /* Convert string to prefix. */ | |
481 | ret = inet_aton (str, &p->prefix); | |
482 | if (ret == 0) | |
483 | return 0; | |
484 | ||
485 | /* If address doesn't contain slash we assume it host address. */ | |
486 | p->family = AF_INET; | |
487 | p->prefixlen = IPV4_MAX_BITLEN; | |
488 | ||
489 | return ret; | |
490 | } | |
491 | else | |
492 | { | |
493 | cp = XMALLOC (MTYPE_TMP, (pnt - str) + 1); | |
494 | strncpy (cp, str, pnt - str); | |
495 | *(cp + (pnt - str)) = '\0'; | |
496 | ret = inet_aton (cp, &p->prefix); | |
497 | XFREE (MTYPE_TMP, cp); | |
498 | ||
499 | /* Get prefix length. */ | |
500 | plen = (u_char) atoi (++pnt); | |
3fb9cd6e | 501 | if (plen > IPV4_MAX_PREFIXLEN) |
718e3744 | 502 | return 0; |
503 | ||
504 | p->family = AF_INET; | |
505 | p->prefixlen = plen; | |
506 | } | |
507 | ||
508 | return ret; | |
509 | } | |
510 | ||
32ac65d9 LB |
511 | /* When string format is invalid return 0. */ |
512 | int | |
513 | str2prefix_eth (const char *str, struct prefix_eth *p) | |
514 | { | |
515 | int ret = 0; | |
516 | int plen = 48; | |
517 | char *pnt; | |
518 | char *cp = NULL; | |
519 | const char *str_addr = str; | |
520 | unsigned int a[6]; | |
521 | int i; | |
522 | ||
523 | /* Find slash inside string. */ | |
524 | pnt = strchr (str, '/'); | |
525 | ||
526 | if (pnt) | |
527 | { | |
528 | /* Get prefix length. */ | |
529 | plen = (u_char) atoi (++pnt); | |
530 | if (plen > 48) | |
531 | { | |
532 | ret = 0; | |
533 | goto done; | |
534 | } | |
535 | ||
536 | cp = XMALLOC (MTYPE_TMP, (pnt - str) + 1); | |
537 | strncpy (cp, str, pnt - str); | |
538 | *(cp + (pnt - str)) = '\0'; | |
539 | ||
540 | str_addr = cp; | |
541 | } | |
542 | ||
543 | /* Convert string to prefix. */ | |
544 | if (sscanf(str_addr, "%2x:%2x:%2x:%2x:%2x:%2x", | |
545 | a+0, a+1, a+2, a+3, a+4, a+5) != 6) | |
546 | { | |
547 | ret = 0; | |
548 | goto done; | |
549 | } | |
550 | for (i = 0; i < 6; ++i) | |
551 | { | |
552 | p->eth_addr.octet[i] = a[i] & 0xff; | |
553 | } | |
554 | p->prefixlen = plen; | |
555 | p->family = AF_ETHERNET; | |
556 | ret = 1; | |
557 | ||
558 | done: | |
559 | if (cp) | |
560 | XFREE (MTYPE_TMP, cp); | |
561 | ||
562 | return ret; | |
563 | } | |
564 | ||
051954f5 | 565 | /* Convert masklen into IP address's netmask (network byte order). */ |
718e3744 | 566 | void |
9663386f | 567 | masklen2ip (const int masklen, struct in_addr *netmask) |
718e3744 | 568 | { |
9ed79b53 | 569 | assert (masklen >= 0 && masklen <= IPV4_MAX_BITLEN); |
e96b3121 DL |
570 | |
571 | /* left shift is only defined for less than the size of the type. | |
572 | * we unconditionally use long long in case the target platform | |
573 | * has defined behaviour for << 32 (or has a 64-bit left shift) */ | |
574 | ||
575 | if (sizeof(unsigned long long) > 4) | |
576 | netmask->s_addr = htonl(0xffffffffULL << (32 - masklen)); | |
577 | else | |
578 | netmask->s_addr = htonl(masklen ? 0xffffffffU << (32 - masklen) : 0); | |
718e3744 | 579 | } |
580 | ||
581 | /* Convert IP address's netmask into integer. We assume netmask is | |
582 | sequential one. Argument netmask should be network byte order. */ | |
583 | u_char | |
584 | ip_masklen (struct in_addr netmask) | |
585 | { | |
e96b3121 DL |
586 | uint32_t tmp = ~ntohl(netmask.s_addr); |
587 | if (tmp) | |
588 | /* clz: count leading zeroes. sadly, the behaviour of this builtin | |
589 | * is undefined for a 0 argument, even though most CPUs give 32 */ | |
590 | return __builtin_clz(tmp); | |
591 | else | |
592 | return 32; | |
718e3744 | 593 | } |
594 | ||
caff7905 | 595 | /* Apply mask to IPv4 prefix (network byte order). */ |
718e3744 | 596 | void |
597 | apply_mask_ipv4 (struct prefix_ipv4 *p) | |
598 | { | |
e96b3121 DL |
599 | struct in_addr mask; |
600 | masklen2ip(p->prefixlen, &mask); | |
601 | p->prefix.s_addr &= mask.s_addr; | |
718e3744 | 602 | } |
603 | ||
604 | /* If prefix is 0.0.0.0/0 then return 1 else return 0. */ | |
605 | int | |
b04c699e | 606 | prefix_ipv4_any (const struct prefix_ipv4 *p) |
718e3744 | 607 | { |
608 | return (p->prefix.s_addr == 0 && p->prefixlen == 0); | |
609 | } | |
6b0655a2 | 610 | |
718e3744 | 611 | /* Allocate a new ip version 6 route */ |
612 | struct prefix_ipv6 * | |
8cc4198f | 613 | prefix_ipv6_new (void) |
718e3744 | 614 | { |
615 | struct prefix_ipv6 *p; | |
616 | ||
7907c6c9 | 617 | /* Allocate a full-size struct prefix to avoid problems with structure |
618 | size mismatches. */ | |
619 | p = (struct prefix_ipv6 *)prefix_new(); | |
718e3744 | 620 | p->family = AF_INET6; |
621 | return p; | |
622 | } | |
623 | ||
624 | /* Free prefix for IPv6. */ | |
625 | void | |
626 | prefix_ipv6_free (struct prefix_ipv6 *p) | |
627 | { | |
7907c6c9 | 628 | prefix_free((struct prefix *)p); |
718e3744 | 629 | } |
630 | ||
631 | /* If given string is valid return pin6 else return NULL */ | |
632 | int | |
b04c699e | 633 | str2prefix_ipv6 (const char *str, struct prefix_ipv6 *p) |
718e3744 | 634 | { |
635 | char *pnt; | |
636 | char *cp; | |
637 | int ret; | |
638 | ||
639 | pnt = strchr (str, '/'); | |
640 | ||
641 | /* If string doesn't contain `/' treat it as host route. */ | |
642 | if (pnt == NULL) | |
643 | { | |
644 | ret = inet_pton (AF_INET6, str, &p->prefix); | |
c4cf095e | 645 | if (ret == 0) |
718e3744 | 646 | return 0; |
647 | p->prefixlen = IPV6_MAX_BITLEN; | |
648 | } | |
649 | else | |
650 | { | |
651 | int plen; | |
652 | ||
c66f9c61 | 653 | cp = XMALLOC (MTYPE_TMP, (pnt - str) + 1); |
718e3744 | 654 | strncpy (cp, str, pnt - str); |
655 | *(cp + (pnt - str)) = '\0'; | |
656 | ret = inet_pton (AF_INET6, cp, &p->prefix); | |
21ab8524 | 657 | XFREE (MTYPE_TMP, cp); |
c4cf095e | 658 | if (ret == 0) |
718e3744 | 659 | return 0; |
660 | plen = (u_char) atoi (++pnt); | |
9ed79b53 | 661 | if (plen > IPV6_MAX_BITLEN) |
718e3744 | 662 | return 0; |
663 | p->prefixlen = plen; | |
664 | } | |
665 | p->family = AF_INET6; | |
666 | ||
667 | return ret; | |
668 | } | |
669 | ||
b04c699e | 670 | /* Convert struct in6_addr netmask into integer. |
671 | * FIXME return u_char as ip_maskleni() does. */ | |
718e3744 | 672 | int |
673 | ip6_masklen (struct in6_addr netmask) | |
674 | { | |
675 | int len = 0; | |
676 | unsigned char val; | |
677 | unsigned char *pnt; | |
678 | ||
679 | pnt = (unsigned char *) & netmask; | |
680 | ||
9ed79b53 | 681 | while ((*pnt == 0xff) && len < IPV6_MAX_BITLEN) |
718e3744 | 682 | { |
683 | len += 8; | |
684 | pnt++; | |
685 | } | |
686 | ||
9ed79b53 | 687 | if (len < IPV6_MAX_BITLEN) |
718e3744 | 688 | { |
689 | val = *pnt; | |
690 | while (val) | |
691 | { | |
692 | len++; | |
693 | val <<= 1; | |
694 | } | |
695 | } | |
696 | return len; | |
697 | } | |
698 | ||
699 | void | |
21f569e3 | 700 | masklen2ip6 (const int masklen, struct in6_addr *netmask) |
718e3744 | 701 | { |
9ed79b53 | 702 | assert (masklen >= 0 && masklen <= IPV6_MAX_BITLEN); |
21f569e3 | 703 | memcpy (netmask, maskbytes6 + masklen, sizeof (struct in6_addr)); |
718e3744 | 704 | } |
705 | ||
706 | void | |
707 | apply_mask_ipv6 (struct prefix_ipv6 *p) | |
708 | { | |
8c7f49d2 DO |
709 | u_char *pnt; |
710 | int index; | |
711 | int offset; | |
712 | ||
713 | index = p->prefixlen / 8; | |
714 | ||
715 | if (index < 16) | |
716 | { | |
717 | pnt = (u_char *) &p->prefix; | |
718 | offset = p->prefixlen % 8; | |
719 | ||
720 | pnt[index] &= maskbit[offset]; | |
721 | index++; | |
722 | ||
723 | while (index < 16) | |
724 | pnt[index++] = 0; | |
725 | } | |
718e3744 | 726 | } |
727 | ||
718e3744 | 728 | void |
729 | apply_mask (struct prefix *p) | |
730 | { | |
731 | switch (p->family) | |
732 | { | |
733 | case AF_INET: | |
734 | apply_mask_ipv4 ((struct prefix_ipv4 *)p); | |
735 | break; | |
718e3744 | 736 | case AF_INET6: |
737 | apply_mask_ipv6 ((struct prefix_ipv6 *)p); | |
738 | break; | |
718e3744 | 739 | default: |
740 | break; | |
741 | } | |
742 | return; | |
743 | } | |
744 | ||
b04c699e | 745 | /* Utility function of convert between struct prefix <=> union sockunion. |
746 | * FIXME This function isn't used anywhere. */ | |
718e3744 | 747 | struct prefix * |
b04c699e | 748 | sockunion2prefix (const union sockunion *dest, |
749 | const union sockunion *mask) | |
718e3744 | 750 | { |
751 | if (dest->sa.sa_family == AF_INET) | |
752 | { | |
753 | struct prefix_ipv4 *p; | |
754 | ||
755 | p = prefix_ipv4_new (); | |
756 | p->family = AF_INET; | |
757 | p->prefix = dest->sin.sin_addr; | |
758 | p->prefixlen = ip_masklen (mask->sin.sin_addr); | |
759 | return (struct prefix *) p; | |
760 | } | |
718e3744 | 761 | if (dest->sa.sa_family == AF_INET6) |
762 | { | |
763 | struct prefix_ipv6 *p; | |
764 | ||
765 | p = prefix_ipv6_new (); | |
766 | p->family = AF_INET6; | |
767 | p->prefixlen = ip6_masklen (mask->sin6.sin6_addr); | |
768 | memcpy (&p->prefix, &dest->sin6.sin6_addr, sizeof (struct in6_addr)); | |
769 | return (struct prefix *) p; | |
770 | } | |
718e3744 | 771 | return NULL; |
772 | } | |
773 | ||
b04c699e | 774 | /* Utility function of convert between struct prefix <=> union sockunion. */ |
718e3744 | 775 | struct prefix * |
40ee54a7 | 776 | sockunion2hostprefix (const union sockunion *su, struct prefix *prefix) |
718e3744 | 777 | { |
778 | if (su->sa.sa_family == AF_INET) | |
779 | { | |
780 | struct prefix_ipv4 *p; | |
781 | ||
40ee54a7 | 782 | p = prefix ? (struct prefix_ipv4 *) prefix : prefix_ipv4_new (); |
718e3744 | 783 | p->family = AF_INET; |
784 | p->prefix = su->sin.sin_addr; | |
785 | p->prefixlen = IPV4_MAX_BITLEN; | |
786 | return (struct prefix *) p; | |
787 | } | |
718e3744 | 788 | if (su->sa.sa_family == AF_INET6) |
789 | { | |
790 | struct prefix_ipv6 *p; | |
791 | ||
40ee54a7 | 792 | p = prefix ? (struct prefix_ipv6 *) prefix : prefix_ipv6_new (); |
718e3744 | 793 | p->family = AF_INET6; |
794 | p->prefixlen = IPV6_MAX_BITLEN; | |
795 | memcpy (&p->prefix, &su->sin6.sin6_addr, sizeof (struct in6_addr)); | |
796 | return (struct prefix *) p; | |
797 | } | |
718e3744 | 798 | return NULL; |
799 | } | |
800 | ||
17e52061 DL |
801 | void |
802 | prefix2sockunion (const struct prefix *p, union sockunion *su) | |
803 | { | |
804 | memset (su, 0, sizeof (*su)); | |
805 | ||
806 | su->sa.sa_family = p->family; | |
807 | if (p->family == AF_INET) | |
808 | su->sin.sin_addr = p->u.prefix4; | |
17e52061 DL |
809 | if (p->family == AF_INET6) |
810 | memcpy (&su->sin6.sin6_addr, &p->u.prefix6, sizeof (struct in6_addr)); | |
17e52061 DL |
811 | } |
812 | ||
718e3744 | 813 | int |
b04c699e | 814 | prefix_blen (const struct prefix *p) |
718e3744 | 815 | { |
816 | switch (p->family) | |
817 | { | |
818 | case AF_INET: | |
819 | return IPV4_MAX_BYTELEN; | |
820 | break; | |
718e3744 | 821 | case AF_INET6: |
822 | return IPV6_MAX_BYTELEN; | |
823 | break; | |
32ac65d9 LB |
824 | case AF_ETHERNET: |
825 | return ETHER_ADDR_LEN; | |
718e3744 | 826 | } |
827 | return 0; | |
828 | } | |
829 | ||
830 | /* Generic function for conversion string to struct prefix. */ | |
831 | int | |
b04c699e | 832 | str2prefix (const char *str, struct prefix *p) |
718e3744 | 833 | { |
834 | int ret; | |
835 | ||
836 | /* First we try to convert string to struct prefix_ipv4. */ | |
837 | ret = str2prefix_ipv4 (str, (struct prefix_ipv4 *) p); | |
838 | if (ret) | |
839 | return ret; | |
840 | ||
718e3744 | 841 | /* Next we try to convert string to struct prefix_ipv6. */ |
842 | ret = str2prefix_ipv6 (str, (struct prefix_ipv6 *) p); | |
843 | if (ret) | |
844 | return ret; | |
718e3744 | 845 | |
32ac65d9 LB |
846 | /* Next we try to convert string to struct prefix_eth. */ |
847 | ret = str2prefix_eth (str, (struct prefix_eth *) p); | |
848 | if (ret) | |
849 | return ret; | |
850 | ||
718e3744 | 851 | return 0; |
852 | } | |
853 | ||
78104b9b | 854 | const char * |
78b81eaa | 855 | prefix2str (union prefixconstptr pu, char *str, int size) |
718e3744 | 856 | { |
78104b9b | 857 | const struct prefix *p = pu.p; |
78b81eaa | 858 | char buf[PREFIX2STR_BUFFER]; |
942e4486 | 859 | |
78b81eaa | 860 | switch (p->family) |
942e4486 | 861 | { |
78b81eaa | 862 | case AF_INET: |
863 | case AF_INET6: | |
864 | snprintf (str, size, "%s/%d", | |
865 | inet_ntop (p->family, &p->u.prefix, buf, PREFIX2STR_BUFFER), | |
866 | p->prefixlen); | |
867 | break; | |
868 | ||
869 | case AF_ETHERNET: | |
870 | if (p->u.prefix_evpn.route_type == 5) | |
871 | { | |
25098f9b | 872 | u_char family; |
78b81eaa | 873 | family = (p->u.prefix_evpn.flags & (IP_ADDR_V4 | IP_PREFIX_V4)) ? |
874 | AF_INET : AF_INET6; | |
875 | snprintf (str, size, "[%d]:[%u][%s]/%d", | |
876 | p->u.prefix_evpn.route_type, | |
877 | p->u.prefix_evpn.eth_tag, | |
878 | inet_ntop (family, &p->u.prefix_evpn.ip.addr, | |
879 | buf, PREFIX2STR_BUFFER), | |
880 | p->prefixlen); | |
881 | } | |
43b4350c PG |
882 | else |
883 | { | |
884 | sprintf (str, "UNK AF_ETHER prefix"); | |
66ef4ee4 PG |
885 | snprintf(str, size, "%02x:%02x:%02x:%02x:%02x:%02x/%d", |
886 | p->u.prefix_eth.octet[0], p->u.prefix_eth.octet[1], | |
887 | p->u.prefix_eth.octet[2], p->u.prefix_eth.octet[3], | |
888 | p->u.prefix_eth.octet[4], p->u.prefix_eth.octet[5], | |
889 | p->prefixlen); | |
43b4350c | 890 | } |
78b81eaa | 891 | break; |
78b81eaa | 892 | default: |
893 | sprintf (str, "UNK prefix"); | |
894 | break; | |
32ac65d9 | 895 | } |
32ac65d9 | 896 | |
78104b9b | 897 | return str; |
718e3744 | 898 | } |
899 | ||
900 | struct prefix * | |
901 | prefix_new () | |
902 | { | |
903 | struct prefix *p; | |
904 | ||
905 | p = XCALLOC (MTYPE_PREFIX, sizeof *p); | |
906 | return p; | |
907 | } | |
908 | ||
909 | /* Free prefix structure. */ | |
910 | void | |
911 | prefix_free (struct prefix *p) | |
912 | { | |
913 | XFREE (MTYPE_PREFIX, p); | |
914 | } | |
915 | ||
916 | /* Utility function. Check the string only contains digit | |
b04c699e | 917 | * character. |
918 | * FIXME str.[c|h] would be better place for this function. */ | |
718e3744 | 919 | int |
b04c699e | 920 | all_digit (const char *str) |
718e3744 | 921 | { |
922 | for (; *str != '\0'; str++) | |
923 | if (!isdigit ((int) *str)) | |
924 | return 0; | |
925 | return 1; | |
926 | } | |
927 | ||
928 | /* Utility function to convert ipv4 prefixes to Classful prefixes */ | |
929 | void apply_classful_mask_ipv4 (struct prefix_ipv4 *p) | |
930 | { | |
931 | ||
932 | u_int32_t destination; | |
933 | ||
934 | destination = ntohl (p->prefix.s_addr); | |
935 | ||
3fb9cd6e | 936 | if (p->prefixlen == IPV4_MAX_PREFIXLEN); |
718e3744 | 937 | /* do nothing for host routes */ |
938 | else if (IN_CLASSC (destination)) | |
939 | { | |
940 | p->prefixlen=24; | |
941 | apply_mask_ipv4(p); | |
942 | } | |
943 | else if (IN_CLASSB(destination)) | |
944 | { | |
945 | p->prefixlen=16; | |
946 | apply_mask_ipv4(p); | |
947 | } | |
948 | else | |
949 | { | |
950 | p->prefixlen=8; | |
951 | apply_mask_ipv4(p); | |
952 | } | |
953 | } | |
954 | ||
3fb9cd6e | 955 | in_addr_t |
956 | ipv4_network_addr (in_addr_t hostaddr, int masklen) | |
957 | { | |
958 | struct in_addr mask; | |
959 | ||
960 | masklen2ip (masklen, &mask); | |
961 | return hostaddr & mask.s_addr; | |
962 | } | |
963 | ||
964 | in_addr_t | |
965 | ipv4_broadcast_addr (in_addr_t hostaddr, int masklen) | |
966 | { | |
967 | struct in_addr mask; | |
968 | ||
969 | masklen2ip (masklen, &mask); | |
970 | return (masklen != IPV4_MAX_PREFIXLEN-1) ? | |
971 | /* normal case */ | |
972 | (hostaddr | ~mask.s_addr) : | |
973 | /* special case for /31 */ | |
974 | (hostaddr ^ ~mask.s_addr); | |
975 | } | |
976 | ||
718e3744 | 977 | /* Utility function to convert ipv4 netmask to prefixes |
978 | ex.) "1.1.0.0" "255.255.0.0" => "1.1.0.0/16" | |
979 | ex.) "1.0.0.0" NULL => "1.0.0.0/8" */ | |
980 | int | |
b04c699e | 981 | netmask_str2prefix_str (const char *net_str, const char *mask_str, |
982 | char *prefix_str) | |
718e3744 | 983 | { |
984 | struct in_addr network; | |
985 | struct in_addr mask; | |
986 | u_char prefixlen; | |
987 | u_int32_t destination; | |
988 | int ret; | |
989 | ||
990 | ret = inet_aton (net_str, &network); | |
991 | if (! ret) | |
992 | return 0; | |
993 | ||
994 | if (mask_str) | |
995 | { | |
996 | ret = inet_aton (mask_str, &mask); | |
997 | if (! ret) | |
998 | return 0; | |
999 | ||
1000 | prefixlen = ip_masklen (mask); | |
1001 | } | |
1002 | else | |
1003 | { | |
1004 | destination = ntohl (network.s_addr); | |
1005 | ||
1006 | if (network.s_addr == 0) | |
1007 | prefixlen = 0; | |
1008 | else if (IN_CLASSC (destination)) | |
1009 | prefixlen = 24; | |
1010 | else if (IN_CLASSB (destination)) | |
1011 | prefixlen = 16; | |
1012 | else if (IN_CLASSA (destination)) | |
1013 | prefixlen = 8; | |
1014 | else | |
1015 | return 0; | |
1016 | } | |
1017 | ||
1018 | sprintf (prefix_str, "%s/%d", net_str, prefixlen); | |
1019 | ||
1020 | return 1; | |
1021 | } | |
1022 | ||
5920990f | 1023 | /* Utility function for making IPv6 address string. */ |
1024 | const char * | |
3a2ce6a1 | 1025 | inet6_ntoa (struct in6_addr addr) |
5920990f | 1026 | { |
1027 | static char buf[INET6_ADDRSTRLEN]; | |
1028 | ||
3a2ce6a1 | 1029 | inet_ntop (AF_INET6, &addr, buf, INET6_ADDRSTRLEN); |
5920990f | 1030 | return buf; |
1031 | } | |
c215ecaf | 1032 | |
c215ecaf PG |
1033 | /* converts to internal representation of mac address |
1034 | * returns 1 on success, 0 otherwise | |
1035 | * format accepted: AA:BB:CC:DD:EE:FF | |
1036 | * if mac parameter is null, then check only | |
1037 | */ | |
db42a173 | 1038 | int prefix_str2mac(const char *str, struct ethaddr *mac) |
c215ecaf | 1039 | { |
db42a173 PG |
1040 | unsigned int a[6]; |
1041 | int i; | |
1042 | ||
c215ecaf PG |
1043 | if (!str) |
1044 | return 0; | |
1045 | ||
db42a173 PG |
1046 | if (sscanf (str, "%2x:%2x:%2x:%2x:%2x:%2x", |
1047 | a + 0, a + 1, a + 2, a + 3, a + 4, a + 5) != 6) | |
1048 | { | |
1049 | /* error in incoming str length */ | |
c215ecaf PG |
1050 | return 0; |
1051 | } | |
db42a173 PG |
1052 | /* valid mac address */ |
1053 | if (!mac) | |
1054 | return 1; | |
1055 | for (i = 0; i < 6; ++i) | |
1056 | mac->octet[i] = a[i] & 0xff; | |
c215ecaf PG |
1057 | return 1; |
1058 | } | |
1059 | ||
db42a173 | 1060 | char *prefix_mac2str(const struct ethaddr *mac, char *buf, int size) |
c215ecaf PG |
1061 | { |
1062 | char *ptr; | |
1063 | ||
c215ecaf PG |
1064 | if (!mac) |
1065 | return NULL; | |
1066 | if (!buf) | |
1067 | ptr = (char *)XMALLOC(MTYPE_TMP, ETHER_ADDR_STRLEN* sizeof(char)); | |
1068 | else | |
0362b0a7 PG |
1069 | { |
1070 | assert (size >= ETHER_ADDR_STRLEN); | |
1071 | ptr = buf; | |
1072 | } | |
c215ecaf | 1073 | snprintf(ptr, (ETHER_ADDR_STRLEN), |
db42a173 PG |
1074 | "%02x:%02x:%02x:%02x:%02x:%02x", (uint8_t) mac->octet[0], |
1075 | (uint8_t) mac->octet[1], (uint8_t) mac->octet[2], (uint8_t) mac->octet[3], | |
1076 | (uint8_t) mac->octet[4], (uint8_t) mac->octet[5]); | |
c215ecaf PG |
1077 | return ptr; |
1078 | } |