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Commit | Line | Data |
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718e3744 | 1 | /* |
2 | * Prefix related functions. | |
3 | * Copyright (C) 1997, 98, 99 Kunihiro Ishiguro | |
4 | * | |
5 | * This file is part of GNU Zebra. | |
6 | * | |
7 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * GNU Zebra is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
896014f4 DL |
17 | * You should have received a copy of the GNU General Public License along |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
718e3744 | 20 | */ |
21 | ||
22 | #include <zebra.h> | |
23 | ||
24 | #include "prefix.h" | |
25 | #include "vty.h" | |
26 | #include "sockunion.h" | |
27 | #include "memory.h" | |
28 | #include "log.h" | |
6b0655a2 | 29 | |
4a1ab8e4 DL |
30 | DEFINE_MTYPE_STATIC(LIB, PREFIX, "Prefix") |
31 | ||
718e3744 | 32 | /* Maskbit. */ |
2d362d10 | 33 | static const u_char maskbit[] = {0x00, 0x80, 0xc0, 0xe0, 0xf0, |
718e3744 | 34 | 0xf8, 0xfc, 0xfe, 0xff}; |
fe67e668 | 35 | |
21f569e3 DO |
36 | static const struct in6_addr maskbytes6[] = |
37 | { | |
38 | /* /0 */ { { { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
39 | /* /1 */ { { { 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
40 | /* /2 */ { { { 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
41 | /* /3 */ { { { 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
42 | /* /4 */ { { { 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
43 | /* /5 */ { { { 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
44 | /* /6 */ { { { 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
45 | /* /7 */ { { { 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
46 | /* /8 */ { { { 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
47 | /* /9 */ { { { 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
48 | /* /10 */ { { { 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
49 | /* /11 */ { { { 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
50 | /* /12 */ { { { 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
51 | /* /13 */ { { { 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
52 | /* /14 */ { { { 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
53 | /* /15 */ { { { 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
54 | /* /16 */ { { { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
55 | /* /17 */ { { { 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
56 | /* /18 */ { { { 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
57 | /* /19 */ { { { 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
58 | /* /20 */ { { { 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
59 | /* /21 */ { { { 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
60 | /* /22 */ { { { 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
61 | /* /23 */ { { { 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
62 | /* /24 */ { { { 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
63 | /* /25 */ { { { 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
64 | /* /26 */ { { { 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
65 | /* /27 */ { { { 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
66 | /* /28 */ { { { 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
67 | /* /29 */ { { { 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
68 | /* /30 */ { { { 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
69 | /* /31 */ { { { 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
70 | /* /32 */ { { { 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
71 | /* /33 */ { { { 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
72 | /* /34 */ { { { 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
73 | /* /35 */ { { { 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
74 | /* /36 */ { { { 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
75 | /* /37 */ { { { 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
76 | /* /38 */ { { { 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
77 | /* /39 */ { { { 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
78 | /* /40 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
79 | /* /41 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
80 | /* /42 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
81 | /* /43 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
82 | /* /44 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
83 | /* /45 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
84 | /* /46 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
85 | /* /47 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
86 | /* /48 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
87 | /* /49 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
88 | /* /50 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
89 | /* /51 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
90 | /* /52 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
91 | /* /53 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
92 | /* /54 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
93 | /* /55 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
94 | /* /56 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
95 | /* /57 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
96 | /* /58 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
97 | /* /59 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
98 | /* /60 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
99 | /* /61 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
100 | /* /62 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
101 | /* /63 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
102 | /* /64 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
103 | /* /65 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
104 | /* /66 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
105 | /* /67 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
106 | /* /68 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
107 | /* /69 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
108 | /* /70 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
109 | /* /71 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
110 | /* /72 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
111 | /* /73 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
112 | /* /74 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
113 | /* /75 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
114 | /* /76 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
115 | /* /77 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
116 | /* /78 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
117 | /* /79 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
118 | /* /80 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
119 | /* /81 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
120 | /* /82 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
121 | /* /83 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
122 | /* /84 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
123 | /* /85 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
124 | /* /86 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
125 | /* /87 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
126 | /* /88 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00 } } }, | |
127 | /* /89 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00 } } }, | |
128 | /* /90 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00 } } }, | |
129 | /* /91 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00 } } }, | |
130 | /* /92 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00 } } }, | |
131 | /* /93 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00 } } }, | |
132 | /* /94 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00 } } }, | |
133 | /* /95 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00 } } }, | |
134 | /* /96 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 } } }, | |
135 | /* /97 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00 } } }, | |
136 | /* /98 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00 } } }, | |
137 | /* /99 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00 } } }, | |
138 | /* /100 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00 } } }, | |
139 | /* /101 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00 } } }, | |
140 | /* /102 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00 } } }, | |
141 | /* /103 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00 } } }, | |
142 | /* /104 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00 } } }, | |
143 | /* /105 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00 } } }, | |
144 | /* /106 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00 } } }, | |
145 | /* /107 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00 } } }, | |
146 | /* /108 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00 } } }, | |
147 | /* /109 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00 } } }, | |
148 | /* /110 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00 } } }, | |
149 | /* /111 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00 } } }, | |
150 | /* /112 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00 } } }, | |
151 | /* /113 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00 } } }, | |
152 | /* /114 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00 } } }, | |
153 | /* /115 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00 } } }, | |
154 | /* /116 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x00 } } }, | |
155 | /* /117 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00 } } }, | |
156 | /* /118 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00 } } }, | |
157 | /* /119 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00 } } }, | |
158 | /* /120 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00 } } }, | |
159 | /* /121 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80 } } }, | |
160 | /* /122 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0 } } }, | |
161 | /* /123 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0 } } }, | |
162 | /* /124 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0 } } }, | |
163 | /* /125 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8 } } }, | |
164 | /* /126 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc } } }, | |
165 | /* /127 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe } } }, | |
166 | /* /128 */ { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } } } | |
167 | }; | |
718e3744 | 168 | |
169 | /* Number of bits in prefix type. */ | |
170 | #ifndef PNBBY | |
171 | #define PNBBY 8 | |
172 | #endif /* PNBBY */ | |
173 | ||
174 | #define MASKBIT(offset) ((0xff << (PNBBY - (offset))) & 0xff) | |
175 | ||
f63f06da PJ |
176 | unsigned int |
177 | prefix_bit (const u_char *prefix, const u_char prefixlen) | |
178 | { | |
179 | unsigned int offset = prefixlen / 8; | |
180 | unsigned int shift = 7 - (prefixlen % 8); | |
181 | ||
182 | return (prefix[offset] >> shift) & 1; | |
183 | } | |
184 | ||
185 | unsigned int | |
186 | prefix6_bit (const struct in6_addr *prefix, const u_char prefixlen) | |
187 | { | |
188 | return prefix_bit((const u_char *) &prefix->s6_addr, prefixlen); | |
189 | } | |
6b0655a2 | 190 | |
f3ccedaa CF |
191 | int |
192 | str2family(const char *string) | |
193 | { | |
194 | if (!strcmp("ipv4", string)) | |
195 | return AF_INET; | |
196 | else if (!strcmp("ipv6", string)) | |
197 | return AF_INET6; | |
32ac65d9 LB |
198 | else if (!strcmp("ethernet", string)) |
199 | return AF_ETHERNET; | |
200 | return -1; | |
f3ccedaa CF |
201 | } |
202 | ||
718e3744 | 203 | /* Address Famiy Identifier to Address Family converter. */ |
204 | int | |
4c9641ba | 205 | afi2family (afi_t afi) |
718e3744 | 206 | { |
207 | if (afi == AFI_IP) | |
208 | return AF_INET; | |
718e3744 | 209 | else if (afi == AFI_IP6) |
210 | return AF_INET6; | |
fd6c6cb4 | 211 | else if (afi == AFI_L2VPN) |
32ac65d9 | 212 | return AF_ETHERNET; |
718e3744 | 213 | return 0; |
214 | } | |
215 | ||
4c9641ba | 216 | afi_t |
718e3744 | 217 | family2afi (int family) |
218 | { | |
219 | if (family == AF_INET) | |
220 | return AFI_IP; | |
718e3744 | 221 | else if (family == AF_INET6) |
222 | return AFI_IP6; | |
32ac65d9 | 223 | else if (family == AF_ETHERNET) |
fd6c6cb4 | 224 | return AFI_L2VPN; |
718e3744 | 225 | return 0; |
226 | } | |
227 | ||
32ac65d9 LB |
228 | const char * |
229 | afi2str(afi_t afi) | |
230 | { | |
231 | switch (afi) { | |
232 | case AFI_IP: | |
233 | return "IPv4"; | |
234 | case AFI_IP6: | |
235 | return "IPv6"; | |
924bf71c PG |
236 | case AFI_L2VPN: |
237 | return "l2vpn"; | |
65efcfce LB |
238 | case AFI_MAX: |
239 | return "bad-value"; | |
32ac65d9 LB |
240 | default: |
241 | break; | |
242 | } | |
243 | return NULL; | |
244 | } | |
245 | ||
1ec23d90 LB |
246 | const char * |
247 | safi2str(safi_t safi) | |
248 | { | |
249 | switch (safi) { | |
250 | case SAFI_UNICAST: | |
251 | return "unicast"; | |
252 | case SAFI_MULTICAST: | |
253 | return "multicast"; | |
1ec23d90 LB |
254 | case SAFI_MPLS_VPN: |
255 | return "vpn"; | |
5143a87b RW |
256 | case SAFI_ENCAP: |
257 | return "encap"; | |
924bf71c PG |
258 | case SAFI_EVPN: |
259 | return "evpn"; | |
5143a87b RW |
260 | case SAFI_LABELED_UNICAST: |
261 | return "labeled-unicast"; | |
1ec23d90 LB |
262 | } |
263 | return NULL; | |
264 | } | |
265 | ||
718e3744 | 266 | /* If n includes p prefix then return 1 else return 0. */ |
267 | int | |
b04c699e | 268 | prefix_match (const struct prefix *n, const struct prefix *p) |
718e3744 | 269 | { |
270 | int offset; | |
271 | int shift; | |
d3583447 | 272 | const u_char *np, *pp; |
718e3744 | 273 | |
274 | /* If n's prefix is longer than p's one return 0. */ | |
275 | if (n->prefixlen > p->prefixlen) | |
276 | return 0; | |
277 | ||
d3583447 PJ |
278 | /* Set both prefix's head pointer. */ |
279 | np = (const u_char *)&n->u.prefix; | |
280 | pp = (const u_char *)&p->u.prefix; | |
281 | ||
718e3744 | 282 | offset = n->prefixlen / PNBBY; |
283 | shift = n->prefixlen % PNBBY; | |
284 | ||
285 | if (shift) | |
286 | if (maskbit[shift] & (np[offset] ^ pp[offset])) | |
287 | return 0; | |
288 | ||
289 | while (offset--) | |
290 | if (np[offset] != pp[offset]) | |
291 | return 0; | |
292 | return 1; | |
293 | } | |
294 | ||
295 | /* Copy prefix from src to dest. */ | |
296 | void | |
b04c699e | 297 | prefix_copy (struct prefix *dest, const struct prefix *src) |
718e3744 | 298 | { |
299 | dest->family = src->family; | |
300 | dest->prefixlen = src->prefixlen; | |
301 | ||
302 | if (src->family == AF_INET) | |
303 | dest->u.prefix4 = src->u.prefix4; | |
718e3744 | 304 | else if (src->family == AF_INET6) |
305 | dest->u.prefix6 = src->u.prefix6; | |
fd6c6cb4 | 306 | else if (src->family == AF_ETHERNET) |
307 | { | |
308 | memcpy (&dest->u.prefix_evpn, &src->u.prefix_evpn, sizeof (struct evpn_addr)); | |
309 | } | |
718e3744 | 310 | else if (src->family == AF_UNSPEC) |
311 | { | |
312 | dest->u.lp.id = src->u.lp.id; | |
313 | dest->u.lp.adv_router = src->u.lp.adv_router; | |
314 | } | |
315 | else | |
316 | { | |
4525281a | 317 | zlog_err("prefix_copy(): Unknown address family %d", src->family); |
718e3744 | 318 | assert (0); |
319 | } | |
320 | } | |
321 | ||
9d24baaa | 322 | /* |
323 | * Return 1 if the address/netmask contained in the prefix structure | |
324 | * is the same, and else return 0. For this routine, 'same' requires | |
325 | * that not only the prefix length and the network part be the same, | |
326 | * but also the host part. Thus, 10.0.0.1/8 and 10.0.0.2/8 are not | |
327 | * the same. Note that this routine has the same return value sense | |
328 | * as '==' (which is different from prefix_cmp). | |
329 | */ | |
718e3744 | 330 | int |
b04c699e | 331 | prefix_same (const struct prefix *p1, const struct prefix *p2) |
718e3744 | 332 | { |
c5f7794f DS |
333 | if ((p1 && !p2) || (!p1 && p2)) |
334 | return 0; | |
335 | ||
336 | if (!p1 && !p2) | |
337 | return 1; | |
338 | ||
718e3744 | 339 | if (p1->family == p2->family && p1->prefixlen == p2->prefixlen) |
340 | { | |
341 | if (p1->family == AF_INET) | |
fe40bfa2 | 342 | if (IPV4_ADDR_SAME (&p1->u.prefix4.s_addr, &p2->u.prefix4.s_addr)) |
718e3744 | 343 | return 1; |
718e3744 | 344 | if (p1->family == AF_INET6 ) |
fe40bfa2 | 345 | if (IPV6_ADDR_SAME (&p1->u.prefix6.s6_addr, &p2->u.prefix6.s6_addr)) |
718e3744 | 346 | return 1; |
fd6c6cb4 | 347 | if (p1->family == AF_ETHERNET ) |
348 | if (!memcmp (&p1->u.prefix_evpn, &p2->u.prefix_evpn, sizeof (struct evpn_addr))) | |
349 | return 1; | |
718e3744 | 350 | } |
351 | return 0; | |
352 | } | |
353 | ||
9d24baaa | 354 | /* |
355 | * Return 0 if the network prefixes represented by the struct prefix | |
356 | * arguments are the same prefix, and 1 otherwise. Network prefixes | |
357 | * are considered the same if the prefix lengths are equal and the | |
358 | * network parts are the same. Host bits (which are considered masked | |
359 | * by the prefix length) are not significant. Thus, 10.0.0.1/8 and | |
360 | * 10.0.0.2/8 are considered equivalent by this routine. Note that | |
361 | * this routine has the same return sense as strcmp (which is different | |
362 | * from prefix_same). | |
363 | */ | |
718e3744 | 364 | int |
b04c699e | 365 | prefix_cmp (const struct prefix *p1, const struct prefix *p2) |
718e3744 | 366 | { |
367 | int offset; | |
368 | int shift; | |
369 | ||
370 | /* Set both prefix's head pointer. */ | |
8cc4198f | 371 | const u_char *pp1 = (const u_char *)&p1->u.prefix; |
372 | const u_char *pp2 = (const u_char *)&p2->u.prefix; | |
718e3744 | 373 | |
374 | if (p1->family != p2->family || p1->prefixlen != p2->prefixlen) | |
375 | return 1; | |
376 | ||
9ed79b53 DO |
377 | offset = p1->prefixlen / PNBBY; |
378 | shift = p1->prefixlen % PNBBY; | |
718e3744 | 379 | |
380 | if (shift) | |
381 | if (maskbit[shift] & (pp1[offset] ^ pp2[offset])) | |
382 | return 1; | |
383 | ||
384 | while (offset--) | |
385 | if (pp1[offset] != pp2[offset]) | |
386 | return 1; | |
387 | ||
388 | return 0; | |
389 | } | |
390 | ||
17e52061 DL |
391 | /* |
392 | * Count the number of common bits in 2 prefixes. The prefix length is | |
393 | * ignored for this function; the whole prefix is compared. If the prefix | |
394 | * address families don't match, return -1; otherwise the return value is | |
395 | * in range 0 ... maximum prefix length for the address family. | |
396 | */ | |
397 | int | |
398 | prefix_common_bits (const struct prefix *p1, const struct prefix *p2) | |
399 | { | |
400 | int pos, bit; | |
401 | int length = 0; | |
402 | u_char xor; | |
403 | ||
404 | /* Set both prefix's head pointer. */ | |
405 | const u_char *pp1 = (const u_char *)&p1->u.prefix; | |
406 | const u_char *pp2 = (const u_char *)&p2->u.prefix; | |
407 | ||
408 | if (p1->family == AF_INET) | |
409 | length = IPV4_MAX_BYTELEN; | |
17e52061 DL |
410 | if (p1->family == AF_INET6) |
411 | length = IPV6_MAX_BYTELEN; | |
fd6c6cb4 | 412 | if (p1->family == AF_ETHERNET) |
413 | length = 8 * sizeof (struct evpn_addr); | |
414 | ||
17e52061 DL |
415 | if (p1->family != p2->family || !length) |
416 | return -1; | |
417 | ||
418 | for (pos = 0; pos < length; pos++) | |
419 | if (pp1[pos] != pp2[pos]) | |
420 | break; | |
421 | if (pos == length) | |
422 | return pos * 8; | |
423 | ||
424 | xor = pp1[pos] ^ pp2[pos]; | |
425 | for (bit = 0; bit < 8; bit++) | |
426 | if (xor & (1 << (7 - bit))) | |
427 | break; | |
428 | ||
429 | return pos * 8 + bit; | |
430 | } | |
431 | ||
718e3744 | 432 | /* Return prefix family type string. */ |
b04c699e | 433 | const char * |
434 | prefix_family_str (const struct prefix *p) | |
718e3744 | 435 | { |
436 | if (p->family == AF_INET) | |
437 | return "inet"; | |
718e3744 | 438 | if (p->family == AF_INET6) |
439 | return "inet6"; | |
32ac65d9 LB |
440 | if (p->family == AF_ETHERNET) |
441 | return "ether"; | |
718e3744 | 442 | return "unspec"; |
443 | } | |
444 | ||
445 | /* Allocate new prefix_ipv4 structure. */ | |
446 | struct prefix_ipv4 * | |
447 | prefix_ipv4_new () | |
448 | { | |
449 | struct prefix_ipv4 *p; | |
450 | ||
7907c6c9 | 451 | /* Call prefix_new to allocate a full-size struct prefix to avoid problems |
452 | where the struct prefix_ipv4 is cast to struct prefix and unallocated | |
453 | bytes were being referenced (e.g. in structure assignments). */ | |
454 | p = (struct prefix_ipv4 *)prefix_new(); | |
718e3744 | 455 | p->family = AF_INET; |
456 | return p; | |
457 | } | |
458 | ||
459 | /* Free prefix_ipv4 structure. */ | |
460 | void | |
461 | prefix_ipv4_free (struct prefix_ipv4 *p) | |
462 | { | |
7907c6c9 | 463 | prefix_free((struct prefix *)p); |
718e3744 | 464 | } |
465 | ||
466 | /* When string format is invalid return 0. */ | |
467 | int | |
b04c699e | 468 | str2prefix_ipv4 (const char *str, struct prefix_ipv4 *p) |
718e3744 | 469 | { |
470 | int ret; | |
471 | int plen; | |
472 | char *pnt; | |
473 | char *cp; | |
474 | ||
475 | /* Find slash inside string. */ | |
476 | pnt = strchr (str, '/'); | |
477 | ||
478 | /* String doesn't contail slash. */ | |
479 | if (pnt == NULL) | |
480 | { | |
481 | /* Convert string to prefix. */ | |
482 | ret = inet_aton (str, &p->prefix); | |
483 | if (ret == 0) | |
484 | return 0; | |
485 | ||
486 | /* If address doesn't contain slash we assume it host address. */ | |
487 | p->family = AF_INET; | |
488 | p->prefixlen = IPV4_MAX_BITLEN; | |
489 | ||
490 | return ret; | |
491 | } | |
492 | else | |
493 | { | |
494 | cp = XMALLOC (MTYPE_TMP, (pnt - str) + 1); | |
495 | strncpy (cp, str, pnt - str); | |
496 | *(cp + (pnt - str)) = '\0'; | |
497 | ret = inet_aton (cp, &p->prefix); | |
498 | XFREE (MTYPE_TMP, cp); | |
499 | ||
500 | /* Get prefix length. */ | |
501 | plen = (u_char) atoi (++pnt); | |
3fb9cd6e | 502 | if (plen > IPV4_MAX_PREFIXLEN) |
718e3744 | 503 | return 0; |
504 | ||
505 | p->family = AF_INET; | |
506 | p->prefixlen = plen; | |
507 | } | |
508 | ||
509 | return ret; | |
510 | } | |
511 | ||
32ac65d9 LB |
512 | /* When string format is invalid return 0. */ |
513 | int | |
514 | str2prefix_eth (const char *str, struct prefix_eth *p) | |
515 | { | |
516 | int ret = 0; | |
517 | int plen = 48; | |
518 | char *pnt; | |
519 | char *cp = NULL; | |
520 | const char *str_addr = str; | |
521 | unsigned int a[6]; | |
522 | int i; | |
523 | ||
524 | /* Find slash inside string. */ | |
525 | pnt = strchr (str, '/'); | |
526 | ||
527 | if (pnt) | |
528 | { | |
529 | /* Get prefix length. */ | |
530 | plen = (u_char) atoi (++pnt); | |
531 | if (plen > 48) | |
532 | { | |
533 | ret = 0; | |
534 | goto done; | |
535 | } | |
536 | ||
537 | cp = XMALLOC (MTYPE_TMP, (pnt - str) + 1); | |
538 | strncpy (cp, str, pnt - str); | |
539 | *(cp + (pnt - str)) = '\0'; | |
540 | ||
541 | str_addr = cp; | |
542 | } | |
543 | ||
544 | /* Convert string to prefix. */ | |
545 | if (sscanf(str_addr, "%2x:%2x:%2x:%2x:%2x:%2x", | |
546 | a+0, a+1, a+2, a+3, a+4, a+5) != 6) | |
547 | { | |
548 | ret = 0; | |
549 | goto done; | |
550 | } | |
551 | for (i = 0; i < 6; ++i) | |
552 | { | |
553 | p->eth_addr.octet[i] = a[i] & 0xff; | |
554 | } | |
555 | p->prefixlen = plen; | |
556 | p->family = AF_ETHERNET; | |
557 | ret = 1; | |
558 | ||
559 | done: | |
560 | if (cp) | |
561 | XFREE (MTYPE_TMP, cp); | |
562 | ||
563 | return ret; | |
564 | } | |
565 | ||
051954f5 | 566 | /* Convert masklen into IP address's netmask (network byte order). */ |
718e3744 | 567 | void |
9663386f | 568 | masklen2ip (const int masklen, struct in_addr *netmask) |
718e3744 | 569 | { |
9ed79b53 | 570 | assert (masklen >= 0 && masklen <= IPV4_MAX_BITLEN); |
e96b3121 DL |
571 | |
572 | /* left shift is only defined for less than the size of the type. | |
573 | * we unconditionally use long long in case the target platform | |
574 | * has defined behaviour for << 32 (or has a 64-bit left shift) */ | |
575 | ||
576 | if (sizeof(unsigned long long) > 4) | |
577 | netmask->s_addr = htonl(0xffffffffULL << (32 - masklen)); | |
578 | else | |
579 | netmask->s_addr = htonl(masklen ? 0xffffffffU << (32 - masklen) : 0); | |
718e3744 | 580 | } |
581 | ||
582 | /* Convert IP address's netmask into integer. We assume netmask is | |
583 | sequential one. Argument netmask should be network byte order. */ | |
584 | u_char | |
585 | ip_masklen (struct in_addr netmask) | |
586 | { | |
e96b3121 DL |
587 | uint32_t tmp = ~ntohl(netmask.s_addr); |
588 | if (tmp) | |
589 | /* clz: count leading zeroes. sadly, the behaviour of this builtin | |
590 | * is undefined for a 0 argument, even though most CPUs give 32 */ | |
591 | return __builtin_clz(tmp); | |
592 | else | |
593 | return 32; | |
718e3744 | 594 | } |
595 | ||
caff7905 | 596 | /* Apply mask to IPv4 prefix (network byte order). */ |
718e3744 | 597 | void |
598 | apply_mask_ipv4 (struct prefix_ipv4 *p) | |
599 | { | |
e96b3121 DL |
600 | struct in_addr mask; |
601 | masklen2ip(p->prefixlen, &mask); | |
602 | p->prefix.s_addr &= mask.s_addr; | |
718e3744 | 603 | } |
604 | ||
605 | /* If prefix is 0.0.0.0/0 then return 1 else return 0. */ | |
606 | int | |
b04c699e | 607 | prefix_ipv4_any (const struct prefix_ipv4 *p) |
718e3744 | 608 | { |
609 | return (p->prefix.s_addr == 0 && p->prefixlen == 0); | |
610 | } | |
6b0655a2 | 611 | |
718e3744 | 612 | /* Allocate a new ip version 6 route */ |
613 | struct prefix_ipv6 * | |
8cc4198f | 614 | prefix_ipv6_new (void) |
718e3744 | 615 | { |
616 | struct prefix_ipv6 *p; | |
617 | ||
7907c6c9 | 618 | /* Allocate a full-size struct prefix to avoid problems with structure |
619 | size mismatches. */ | |
620 | p = (struct prefix_ipv6 *)prefix_new(); | |
718e3744 | 621 | p->family = AF_INET6; |
622 | return p; | |
623 | } | |
624 | ||
625 | /* Free prefix for IPv6. */ | |
626 | void | |
627 | prefix_ipv6_free (struct prefix_ipv6 *p) | |
628 | { | |
7907c6c9 | 629 | prefix_free((struct prefix *)p); |
718e3744 | 630 | } |
631 | ||
632 | /* If given string is valid return pin6 else return NULL */ | |
633 | int | |
b04c699e | 634 | str2prefix_ipv6 (const char *str, struct prefix_ipv6 *p) |
718e3744 | 635 | { |
636 | char *pnt; | |
637 | char *cp; | |
638 | int ret; | |
639 | ||
640 | pnt = strchr (str, '/'); | |
641 | ||
642 | /* If string doesn't contain `/' treat it as host route. */ | |
643 | if (pnt == NULL) | |
644 | { | |
645 | ret = inet_pton (AF_INET6, str, &p->prefix); | |
c4cf095e | 646 | if (ret == 0) |
718e3744 | 647 | return 0; |
648 | p->prefixlen = IPV6_MAX_BITLEN; | |
649 | } | |
650 | else | |
651 | { | |
652 | int plen; | |
653 | ||
c66f9c61 | 654 | cp = XMALLOC (MTYPE_TMP, (pnt - str) + 1); |
718e3744 | 655 | strncpy (cp, str, pnt - str); |
656 | *(cp + (pnt - str)) = '\0'; | |
657 | ret = inet_pton (AF_INET6, cp, &p->prefix); | |
21ab8524 | 658 | XFREE (MTYPE_TMP, cp); |
c4cf095e | 659 | if (ret == 0) |
718e3744 | 660 | return 0; |
661 | plen = (u_char) atoi (++pnt); | |
9ed79b53 | 662 | if (plen > IPV6_MAX_BITLEN) |
718e3744 | 663 | return 0; |
664 | p->prefixlen = plen; | |
665 | } | |
666 | p->family = AF_INET6; | |
667 | ||
668 | return ret; | |
669 | } | |
670 | ||
b04c699e | 671 | /* Convert struct in6_addr netmask into integer. |
672 | * FIXME return u_char as ip_maskleni() does. */ | |
718e3744 | 673 | int |
674 | ip6_masklen (struct in6_addr netmask) | |
675 | { | |
676 | int len = 0; | |
677 | unsigned char val; | |
678 | unsigned char *pnt; | |
679 | ||
680 | pnt = (unsigned char *) & netmask; | |
681 | ||
9ed79b53 | 682 | while ((*pnt == 0xff) && len < IPV6_MAX_BITLEN) |
718e3744 | 683 | { |
684 | len += 8; | |
685 | pnt++; | |
686 | } | |
687 | ||
9ed79b53 | 688 | if (len < IPV6_MAX_BITLEN) |
718e3744 | 689 | { |
690 | val = *pnt; | |
691 | while (val) | |
692 | { | |
693 | len++; | |
694 | val <<= 1; | |
695 | } | |
696 | } | |
697 | return len; | |
698 | } | |
699 | ||
700 | void | |
21f569e3 | 701 | masklen2ip6 (const int masklen, struct in6_addr *netmask) |
718e3744 | 702 | { |
9ed79b53 | 703 | assert (masklen >= 0 && masklen <= IPV6_MAX_BITLEN); |
21f569e3 | 704 | memcpy (netmask, maskbytes6 + masklen, sizeof (struct in6_addr)); |
718e3744 | 705 | } |
706 | ||
707 | void | |
708 | apply_mask_ipv6 (struct prefix_ipv6 *p) | |
709 | { | |
8c7f49d2 DO |
710 | u_char *pnt; |
711 | int index; | |
712 | int offset; | |
713 | ||
714 | index = p->prefixlen / 8; | |
715 | ||
716 | if (index < 16) | |
717 | { | |
718 | pnt = (u_char *) &p->prefix; | |
719 | offset = p->prefixlen % 8; | |
720 | ||
721 | pnt[index] &= maskbit[offset]; | |
722 | index++; | |
723 | ||
724 | while (index < 16) | |
725 | pnt[index++] = 0; | |
726 | } | |
718e3744 | 727 | } |
728 | ||
718e3744 | 729 | void |
730 | apply_mask (struct prefix *p) | |
731 | { | |
732 | switch (p->family) | |
733 | { | |
734 | case AF_INET: | |
735 | apply_mask_ipv4 ((struct prefix_ipv4 *)p); | |
736 | break; | |
718e3744 | 737 | case AF_INET6: |
738 | apply_mask_ipv6 ((struct prefix_ipv6 *)p); | |
739 | break; | |
718e3744 | 740 | default: |
741 | break; | |
742 | } | |
743 | return; | |
744 | } | |
745 | ||
b04c699e | 746 | /* Utility function of convert between struct prefix <=> union sockunion. |
747 | * FIXME This function isn't used anywhere. */ | |
718e3744 | 748 | struct prefix * |
b04c699e | 749 | sockunion2prefix (const union sockunion *dest, |
750 | const union sockunion *mask) | |
718e3744 | 751 | { |
752 | if (dest->sa.sa_family == AF_INET) | |
753 | { | |
754 | struct prefix_ipv4 *p; | |
755 | ||
756 | p = prefix_ipv4_new (); | |
757 | p->family = AF_INET; | |
758 | p->prefix = dest->sin.sin_addr; | |
759 | p->prefixlen = ip_masklen (mask->sin.sin_addr); | |
760 | return (struct prefix *) p; | |
761 | } | |
718e3744 | 762 | if (dest->sa.sa_family == AF_INET6) |
763 | { | |
764 | struct prefix_ipv6 *p; | |
765 | ||
766 | p = prefix_ipv6_new (); | |
767 | p->family = AF_INET6; | |
768 | p->prefixlen = ip6_masklen (mask->sin6.sin6_addr); | |
769 | memcpy (&p->prefix, &dest->sin6.sin6_addr, sizeof (struct in6_addr)); | |
770 | return (struct prefix *) p; | |
771 | } | |
718e3744 | 772 | return NULL; |
773 | } | |
774 | ||
b04c699e | 775 | /* Utility function of convert between struct prefix <=> union sockunion. */ |
718e3744 | 776 | struct prefix * |
40ee54a7 | 777 | sockunion2hostprefix (const union sockunion *su, struct prefix *prefix) |
718e3744 | 778 | { |
779 | if (su->sa.sa_family == AF_INET) | |
780 | { | |
781 | struct prefix_ipv4 *p; | |
782 | ||
40ee54a7 | 783 | p = prefix ? (struct prefix_ipv4 *) prefix : prefix_ipv4_new (); |
718e3744 | 784 | p->family = AF_INET; |
785 | p->prefix = su->sin.sin_addr; | |
786 | p->prefixlen = IPV4_MAX_BITLEN; | |
787 | return (struct prefix *) p; | |
788 | } | |
718e3744 | 789 | if (su->sa.sa_family == AF_INET6) |
790 | { | |
791 | struct prefix_ipv6 *p; | |
792 | ||
40ee54a7 | 793 | p = prefix ? (struct prefix_ipv6 *) prefix : prefix_ipv6_new (); |
718e3744 | 794 | p->family = AF_INET6; |
795 | p->prefixlen = IPV6_MAX_BITLEN; | |
796 | memcpy (&p->prefix, &su->sin6.sin6_addr, sizeof (struct in6_addr)); | |
797 | return (struct prefix *) p; | |
798 | } | |
718e3744 | 799 | return NULL; |
800 | } | |
801 | ||
17e52061 DL |
802 | void |
803 | prefix2sockunion (const struct prefix *p, union sockunion *su) | |
804 | { | |
805 | memset (su, 0, sizeof (*su)); | |
806 | ||
807 | su->sa.sa_family = p->family; | |
808 | if (p->family == AF_INET) | |
809 | su->sin.sin_addr = p->u.prefix4; | |
17e52061 DL |
810 | if (p->family == AF_INET6) |
811 | memcpy (&su->sin6.sin6_addr, &p->u.prefix6, sizeof (struct in6_addr)); | |
17e52061 DL |
812 | } |
813 | ||
718e3744 | 814 | int |
b04c699e | 815 | prefix_blen (const struct prefix *p) |
718e3744 | 816 | { |
817 | switch (p->family) | |
818 | { | |
819 | case AF_INET: | |
820 | return IPV4_MAX_BYTELEN; | |
821 | break; | |
718e3744 | 822 | case AF_INET6: |
823 | return IPV6_MAX_BYTELEN; | |
824 | break; | |
32ac65d9 LB |
825 | case AF_ETHERNET: |
826 | return ETHER_ADDR_LEN; | |
718e3744 | 827 | } |
828 | return 0; | |
829 | } | |
830 | ||
831 | /* Generic function for conversion string to struct prefix. */ | |
832 | int | |
b04c699e | 833 | str2prefix (const char *str, struct prefix *p) |
718e3744 | 834 | { |
835 | int ret; | |
836 | ||
837 | /* First we try to convert string to struct prefix_ipv4. */ | |
838 | ret = str2prefix_ipv4 (str, (struct prefix_ipv4 *) p); | |
839 | if (ret) | |
840 | return ret; | |
841 | ||
718e3744 | 842 | /* Next we try to convert string to struct prefix_ipv6. */ |
843 | ret = str2prefix_ipv6 (str, (struct prefix_ipv6 *) p); | |
844 | if (ret) | |
845 | return ret; | |
718e3744 | 846 | |
32ac65d9 LB |
847 | /* Next we try to convert string to struct prefix_eth. */ |
848 | ret = str2prefix_eth (str, (struct prefix_eth *) p); | |
849 | if (ret) | |
850 | return ret; | |
851 | ||
718e3744 | 852 | return 0; |
853 | } | |
854 | ||
78104b9b | 855 | const char * |
78b81eaa | 856 | prefix2str (union prefixconstptr pu, char *str, int size) |
718e3744 | 857 | { |
78104b9b | 858 | const struct prefix *p = pu.p; |
78b81eaa | 859 | char buf[PREFIX2STR_BUFFER]; |
942e4486 | 860 | |
78b81eaa | 861 | switch (p->family) |
942e4486 | 862 | { |
78b81eaa | 863 | case AF_INET: |
864 | case AF_INET6: | |
865 | snprintf (str, size, "%s/%d", | |
866 | inet_ntop (p->family, &p->u.prefix, buf, PREFIX2STR_BUFFER), | |
867 | p->prefixlen); | |
868 | break; | |
869 | ||
870 | case AF_ETHERNET: | |
871 | if (p->u.prefix_evpn.route_type == 5) | |
872 | { | |
25098f9b | 873 | u_char family; |
78b81eaa | 874 | family = (p->u.prefix_evpn.flags & (IP_ADDR_V4 | IP_PREFIX_V4)) ? |
875 | AF_INET : AF_INET6; | |
876 | snprintf (str, size, "[%d]:[%u][%s]/%d", | |
877 | p->u.prefix_evpn.route_type, | |
878 | p->u.prefix_evpn.eth_tag, | |
879 | inet_ntop (family, &p->u.prefix_evpn.ip.addr, | |
880 | buf, PREFIX2STR_BUFFER), | |
881 | p->prefixlen); | |
882 | } | |
43b4350c PG |
883 | else |
884 | { | |
885 | sprintf (str, "UNK AF_ETHER prefix"); | |
66ef4ee4 PG |
886 | snprintf(str, size, "%02x:%02x:%02x:%02x:%02x:%02x/%d", |
887 | p->u.prefix_eth.octet[0], p->u.prefix_eth.octet[1], | |
888 | p->u.prefix_eth.octet[2], p->u.prefix_eth.octet[3], | |
889 | p->u.prefix_eth.octet[4], p->u.prefix_eth.octet[5], | |
890 | p->prefixlen); | |
43b4350c | 891 | } |
78b81eaa | 892 | break; |
78b81eaa | 893 | default: |
894 | sprintf (str, "UNK prefix"); | |
895 | break; | |
32ac65d9 | 896 | } |
32ac65d9 | 897 | |
78104b9b | 898 | return str; |
718e3744 | 899 | } |
900 | ||
901 | struct prefix * | |
902 | prefix_new () | |
903 | { | |
904 | struct prefix *p; | |
905 | ||
906 | p = XCALLOC (MTYPE_PREFIX, sizeof *p); | |
907 | return p; | |
908 | } | |
909 | ||
910 | /* Free prefix structure. */ | |
911 | void | |
912 | prefix_free (struct prefix *p) | |
913 | { | |
914 | XFREE (MTYPE_PREFIX, p); | |
915 | } | |
916 | ||
917 | /* Utility function. Check the string only contains digit | |
b04c699e | 918 | * character. |
919 | * FIXME str.[c|h] would be better place for this function. */ | |
718e3744 | 920 | int |
b04c699e | 921 | all_digit (const char *str) |
718e3744 | 922 | { |
923 | for (; *str != '\0'; str++) | |
924 | if (!isdigit ((int) *str)) | |
925 | return 0; | |
926 | return 1; | |
927 | } | |
928 | ||
929 | /* Utility function to convert ipv4 prefixes to Classful prefixes */ | |
930 | void apply_classful_mask_ipv4 (struct prefix_ipv4 *p) | |
931 | { | |
932 | ||
933 | u_int32_t destination; | |
934 | ||
935 | destination = ntohl (p->prefix.s_addr); | |
936 | ||
3fb9cd6e | 937 | if (p->prefixlen == IPV4_MAX_PREFIXLEN); |
718e3744 | 938 | /* do nothing for host routes */ |
939 | else if (IN_CLASSC (destination)) | |
940 | { | |
941 | p->prefixlen=24; | |
942 | apply_mask_ipv4(p); | |
943 | } | |
944 | else if (IN_CLASSB(destination)) | |
945 | { | |
946 | p->prefixlen=16; | |
947 | apply_mask_ipv4(p); | |
948 | } | |
949 | else | |
950 | { | |
951 | p->prefixlen=8; | |
952 | apply_mask_ipv4(p); | |
953 | } | |
954 | } | |
955 | ||
3fb9cd6e | 956 | in_addr_t |
957 | ipv4_network_addr (in_addr_t hostaddr, int masklen) | |
958 | { | |
959 | struct in_addr mask; | |
960 | ||
961 | masklen2ip (masklen, &mask); | |
962 | return hostaddr & mask.s_addr; | |
963 | } | |
964 | ||
965 | in_addr_t | |
966 | ipv4_broadcast_addr (in_addr_t hostaddr, int masklen) | |
967 | { | |
968 | struct in_addr mask; | |
969 | ||
970 | masklen2ip (masklen, &mask); | |
971 | return (masklen != IPV4_MAX_PREFIXLEN-1) ? | |
972 | /* normal case */ | |
973 | (hostaddr | ~mask.s_addr) : | |
974 | /* special case for /31 */ | |
975 | (hostaddr ^ ~mask.s_addr); | |
976 | } | |
977 | ||
718e3744 | 978 | /* Utility function to convert ipv4 netmask to prefixes |
979 | ex.) "1.1.0.0" "255.255.0.0" => "1.1.0.0/16" | |
980 | ex.) "1.0.0.0" NULL => "1.0.0.0/8" */ | |
981 | int | |
b04c699e | 982 | netmask_str2prefix_str (const char *net_str, const char *mask_str, |
983 | char *prefix_str) | |
718e3744 | 984 | { |
985 | struct in_addr network; | |
986 | struct in_addr mask; | |
987 | u_char prefixlen; | |
988 | u_int32_t destination; | |
989 | int ret; | |
990 | ||
991 | ret = inet_aton (net_str, &network); | |
992 | if (! ret) | |
993 | return 0; | |
994 | ||
995 | if (mask_str) | |
996 | { | |
997 | ret = inet_aton (mask_str, &mask); | |
998 | if (! ret) | |
999 | return 0; | |
1000 | ||
1001 | prefixlen = ip_masklen (mask); | |
1002 | } | |
1003 | else | |
1004 | { | |
1005 | destination = ntohl (network.s_addr); | |
1006 | ||
1007 | if (network.s_addr == 0) | |
1008 | prefixlen = 0; | |
1009 | else if (IN_CLASSC (destination)) | |
1010 | prefixlen = 24; | |
1011 | else if (IN_CLASSB (destination)) | |
1012 | prefixlen = 16; | |
1013 | else if (IN_CLASSA (destination)) | |
1014 | prefixlen = 8; | |
1015 | else | |
1016 | return 0; | |
1017 | } | |
1018 | ||
1019 | sprintf (prefix_str, "%s/%d", net_str, prefixlen); | |
1020 | ||
1021 | return 1; | |
1022 | } | |
1023 | ||
5920990f | 1024 | /* Utility function for making IPv6 address string. */ |
1025 | const char * | |
3a2ce6a1 | 1026 | inet6_ntoa (struct in6_addr addr) |
5920990f | 1027 | { |
1028 | static char buf[INET6_ADDRSTRLEN]; | |
1029 | ||
3a2ce6a1 | 1030 | inet_ntop (AF_INET6, &addr, buf, INET6_ADDRSTRLEN); |
5920990f | 1031 | return buf; |
1032 | } | |
c215ecaf | 1033 | |
c215ecaf PG |
1034 | /* converts to internal representation of mac address |
1035 | * returns 1 on success, 0 otherwise | |
1036 | * format accepted: AA:BB:CC:DD:EE:FF | |
1037 | * if mac parameter is null, then check only | |
1038 | */ | |
db42a173 | 1039 | int prefix_str2mac(const char *str, struct ethaddr *mac) |
c215ecaf | 1040 | { |
db42a173 PG |
1041 | unsigned int a[6]; |
1042 | int i; | |
1043 | ||
c215ecaf PG |
1044 | if (!str) |
1045 | return 0; | |
1046 | ||
db42a173 PG |
1047 | if (sscanf (str, "%2x:%2x:%2x:%2x:%2x:%2x", |
1048 | a + 0, a + 1, a + 2, a + 3, a + 4, a + 5) != 6) | |
1049 | { | |
1050 | /* error in incoming str length */ | |
c215ecaf PG |
1051 | return 0; |
1052 | } | |
db42a173 PG |
1053 | /* valid mac address */ |
1054 | if (!mac) | |
1055 | return 1; | |
1056 | for (i = 0; i < 6; ++i) | |
1057 | mac->octet[i] = a[i] & 0xff; | |
c215ecaf PG |
1058 | return 1; |
1059 | } | |
1060 | ||
db42a173 | 1061 | char *prefix_mac2str(const struct ethaddr *mac, char *buf, int size) |
c215ecaf PG |
1062 | { |
1063 | char *ptr; | |
1064 | ||
c215ecaf PG |
1065 | if (!mac) |
1066 | return NULL; | |
1067 | if (!buf) | |
1068 | ptr = (char *)XMALLOC(MTYPE_TMP, ETHER_ADDR_STRLEN* sizeof(char)); | |
1069 | else | |
0362b0a7 PG |
1070 | { |
1071 | assert (size >= ETHER_ADDR_STRLEN); | |
1072 | ptr = buf; | |
1073 | } | |
c215ecaf | 1074 | snprintf(ptr, (ETHER_ADDR_STRLEN), |
db42a173 PG |
1075 | "%02x:%02x:%02x:%02x:%02x:%02x", (uint8_t) mac->octet[0], |
1076 | (uint8_t) mac->octet[1], (uint8_t) mac->octet[2], (uint8_t) mac->octet[3], | |
1077 | (uint8_t) mac->octet[4], (uint8_t) mac->octet[5]); | |
c215ecaf PG |
1078 | return ptr; |
1079 | } |