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a94434b6 | 1 | /* RIPng offset-list |
2 | * Copyright (C) 2000 Kunihiro Ishiguro <kunihiro@zebra.org> | |
3 | * | |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
896014f4 DL |
16 | * You should have received a copy of the GNU General Public License along |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
a94434b6 | 19 | */ |
20 | ||
d62a17ae | 21 | /* RIPng support by Vincent Jardin <vincent.jardin@6wind.com> |
22 | * Copyright (C) 2002 6WIND | |
23 | */ | |
a94434b6 | 24 | |
25 | #include <zebra.h> | |
26 | ||
27 | #include "if.h" | |
28 | #include "prefix.h" | |
29 | #include "filter.h" | |
30 | #include "command.h" | |
31 | #include "linklist.h" | |
32 | #include "memory.h" | |
33 | ||
6ac29a51 PJ |
34 | #include "ripngd/ripngd.h" |
35 | ||
a94434b6 | 36 | static struct list *ripng_offset_list_master; |
37 | ||
b09956ca RW |
38 | #define OFFSET_LIST_IN_NAME(O) ((O)->direct[RIPNG_OFFSET_LIST_IN].alist_name) |
39 | #define OFFSET_LIST_IN_METRIC(O) ((O)->direct[RIPNG_OFFSET_LIST_IN].metric) | |
40 | ||
41 | #define OFFSET_LIST_OUT_NAME(O) ((O)->direct[RIPNG_OFFSET_LIST_OUT].alist_name) | |
42 | #define OFFSET_LIST_OUT_METRIC(O) ((O)->direct[RIPNG_OFFSET_LIST_OUT].metric) | |
a94434b6 | 43 | |
b09956ca | 44 | struct ripng_offset_list *ripng_offset_list_new(const char *ifname) |
a94434b6 | 45 | { |
d62a17ae | 46 | struct ripng_offset_list *new; |
a94434b6 | 47 | |
d62a17ae | 48 | new = XCALLOC(MTYPE_RIPNG_OFFSET_LIST, |
49 | sizeof(struct ripng_offset_list)); | |
b09956ca RW |
50 | new->ifname = strdup(ifname); |
51 | listnode_add_sort(ripng_offset_list_master, new); | |
52 | ||
d62a17ae | 53 | return new; |
a94434b6 | 54 | } |
55 | ||
b09956ca | 56 | void ripng_offset_list_del(struct ripng_offset_list *offset) |
a94434b6 | 57 | { |
b09956ca RW |
58 | listnode_delete(ripng_offset_list_master, offset); |
59 | if (OFFSET_LIST_IN_NAME(offset)) | |
60 | free(OFFSET_LIST_IN_NAME(offset)); | |
61 | if (OFFSET_LIST_OUT_NAME(offset)) | |
62 | free(OFFSET_LIST_OUT_NAME(offset)); | |
63 | free(offset->ifname); | |
d62a17ae | 64 | XFREE(MTYPE_RIPNG_OFFSET_LIST, offset); |
a94434b6 | 65 | } |
66 | ||
b09956ca | 67 | struct ripng_offset_list *ripng_offset_list_lookup(const char *ifname) |
a94434b6 | 68 | { |
d62a17ae | 69 | struct ripng_offset_list *offset; |
70 | struct listnode *node, *nnode; | |
a94434b6 | 71 | |
d62a17ae | 72 | for (ALL_LIST_ELEMENTS(ripng_offset_list_master, node, nnode, offset)) { |
b09956ca | 73 | if (strcmp(offset->ifname, ifname) == 0) |
d62a17ae | 74 | return offset; |
75 | } | |
76 | return NULL; | |
a94434b6 | 77 | } |
78 | ||
a94434b6 | 79 | /* If metric is modifed return 1. */ |
d62a17ae | 80 | int ripng_offset_list_apply_in(struct prefix_ipv6 *p, struct interface *ifp, |
d7c0a89a | 81 | uint8_t *metric) |
a94434b6 | 82 | { |
d62a17ae | 83 | struct ripng_offset_list *offset; |
84 | struct access_list *alist; | |
85 | ||
86 | /* Look up offset-list with interface name. */ | |
87 | offset = ripng_offset_list_lookup(ifp->name); | |
88 | if (offset && OFFSET_LIST_IN_NAME(offset)) { | |
89 | alist = access_list_lookup(AFI_IP6, | |
90 | OFFSET_LIST_IN_NAME(offset)); | |
91 | ||
92 | if (alist | |
93 | && access_list_apply(alist, (struct prefix *)p) | |
94 | == FILTER_PERMIT) { | |
95 | *metric += OFFSET_LIST_IN_METRIC(offset); | |
96 | return 1; | |
97 | } | |
98 | return 0; | |
a94434b6 | 99 | } |
d62a17ae | 100 | /* Look up offset-list without interface name. */ |
b09956ca | 101 | offset = ripng_offset_list_lookup("*"); |
d62a17ae | 102 | if (offset && OFFSET_LIST_IN_NAME(offset)) { |
103 | alist = access_list_lookup(AFI_IP6, | |
104 | OFFSET_LIST_IN_NAME(offset)); | |
105 | ||
106 | if (alist | |
107 | && access_list_apply(alist, (struct prefix *)p) | |
108 | == FILTER_PERMIT) { | |
109 | *metric += OFFSET_LIST_IN_METRIC(offset); | |
110 | return 1; | |
111 | } | |
112 | return 0; | |
a94434b6 | 113 | } |
d62a17ae | 114 | return 0; |
a94434b6 | 115 | } |
116 | ||
117 | /* If metric is modifed return 1. */ | |
d62a17ae | 118 | int ripng_offset_list_apply_out(struct prefix_ipv6 *p, struct interface *ifp, |
d7c0a89a | 119 | uint8_t *metric) |
a94434b6 | 120 | { |
d62a17ae | 121 | struct ripng_offset_list *offset; |
122 | struct access_list *alist; | |
123 | ||
124 | /* Look up offset-list with interface name. */ | |
125 | offset = ripng_offset_list_lookup(ifp->name); | |
126 | if (offset && OFFSET_LIST_OUT_NAME(offset)) { | |
127 | alist = access_list_lookup(AFI_IP6, | |
128 | OFFSET_LIST_OUT_NAME(offset)); | |
129 | ||
130 | if (alist | |
131 | && access_list_apply(alist, (struct prefix *)p) | |
132 | == FILTER_PERMIT) { | |
133 | *metric += OFFSET_LIST_OUT_METRIC(offset); | |
134 | return 1; | |
135 | } | |
136 | return 0; | |
a94434b6 | 137 | } |
d62a17ae | 138 | |
139 | /* Look up offset-list without interface name. */ | |
b09956ca | 140 | offset = ripng_offset_list_lookup("*"); |
d62a17ae | 141 | if (offset && OFFSET_LIST_OUT_NAME(offset)) { |
142 | alist = access_list_lookup(AFI_IP6, | |
143 | OFFSET_LIST_OUT_NAME(offset)); | |
144 | ||
145 | if (alist | |
146 | && access_list_apply(alist, (struct prefix *)p) | |
147 | == FILTER_PERMIT) { | |
148 | *metric += OFFSET_LIST_OUT_METRIC(offset); | |
149 | return 1; | |
150 | } | |
151 | return 0; | |
a94434b6 | 152 | } |
d62a17ae | 153 | return 0; |
a94434b6 | 154 | } |
155 | ||
d62a17ae | 156 | static int offset_list_cmp(struct ripng_offset_list *o1, |
157 | struct ripng_offset_list *o2) | |
a94434b6 | 158 | { |
b09956ca | 159 | return strcmp(o1->ifname, o2->ifname); |
a94434b6 | 160 | } |
161 | ||
d62a17ae | 162 | void ripng_offset_init(void) |
a94434b6 | 163 | { |
d62a17ae | 164 | ripng_offset_list_master = list_new(); |
165 | ripng_offset_list_master->cmp = | |
166 | (int (*)(void *, void *))offset_list_cmp; | |
b09956ca | 167 | ripng_offset_list_master->del = (void (*)(void *))ripng_offset_list_del; |
a94434b6 | 168 | } |
169 | ||
d62a17ae | 170 | void ripng_offset_clean(void) |
a94434b6 | 171 | { |
6a154c88 | 172 | list_delete(&ripng_offset_list_master); |
a94434b6 | 173 | |
d62a17ae | 174 | ripng_offset_list_master = list_new(); |
175 | ripng_offset_list_master->cmp = | |
176 | (int (*)(void *, void *))offset_list_cmp; | |
b09956ca | 177 | ripng_offset_list_master->del = (void (*)(void *))ripng_offset_list_del; |
a94434b6 | 178 | } |