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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 | ||
b3a7e30d DL |
36 | DEFINE_MTYPE_STATIC(RIPNGD, RIPNG_OFFSET_LIST, "RIPng offset lst") |
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 | |
5c84b9a5 RW |
44 | struct ripng_offset_list *ripng_offset_list_new(struct ripng *ripng, |
45 | const char *ifname) | |
a94434b6 | 46 | { |
d62a17ae | 47 | struct ripng_offset_list *new; |
a94434b6 | 48 | |
d62a17ae | 49 | new = XCALLOC(MTYPE_RIPNG_OFFSET_LIST, |
50 | sizeof(struct ripng_offset_list)); | |
5c84b9a5 | 51 | new->ripng = ripng; |
b09956ca | 52 | new->ifname = strdup(ifname); |
26c6be93 | 53 | listnode_add_sort(ripng->offset_list_master, new); |
b09956ca | 54 | |
d62a17ae | 55 | return new; |
a94434b6 | 56 | } |
57 | ||
b09956ca | 58 | void ripng_offset_list_del(struct ripng_offset_list *offset) |
a94434b6 | 59 | { |
5c84b9a5 | 60 | listnode_delete(offset->ripng->offset_list_master, offset); |
6c4c3561 RW |
61 | ripng_offset_list_free(offset); |
62 | } | |
63 | ||
64 | void ripng_offset_list_free(struct ripng_offset_list *offset) | |
65 | { | |
b09956ca RW |
66 | if (OFFSET_LIST_IN_NAME(offset)) |
67 | free(OFFSET_LIST_IN_NAME(offset)); | |
68 | if (OFFSET_LIST_OUT_NAME(offset)) | |
69 | free(OFFSET_LIST_OUT_NAME(offset)); | |
70 | free(offset->ifname); | |
d62a17ae | 71 | XFREE(MTYPE_RIPNG_OFFSET_LIST, offset); |
a94434b6 | 72 | } |
73 | ||
5c84b9a5 RW |
74 | struct ripng_offset_list *ripng_offset_list_lookup(struct ripng *ripng, |
75 | const char *ifname) | |
a94434b6 | 76 | { |
d62a17ae | 77 | struct ripng_offset_list *offset; |
78 | struct listnode *node, *nnode; | |
a94434b6 | 79 | |
26c6be93 RW |
80 | for (ALL_LIST_ELEMENTS(ripng->offset_list_master, node, nnode, |
81 | offset)) { | |
b09956ca | 82 | if (strcmp(offset->ifname, ifname) == 0) |
d62a17ae | 83 | return offset; |
84 | } | |
85 | return NULL; | |
a94434b6 | 86 | } |
87 | ||
a94434b6 | 88 | /* If metric is modifed return 1. */ |
5c84b9a5 RW |
89 | int ripng_offset_list_apply_in(struct ripng *ripng, struct prefix_ipv6 *p, |
90 | struct interface *ifp, uint8_t *metric) | |
a94434b6 | 91 | { |
d62a17ae | 92 | struct ripng_offset_list *offset; |
93 | struct access_list *alist; | |
94 | ||
95 | /* Look up offset-list with interface name. */ | |
5c84b9a5 | 96 | offset = ripng_offset_list_lookup(ripng, ifp->name); |
d62a17ae | 97 | if (offset && OFFSET_LIST_IN_NAME(offset)) { |
98 | alist = access_list_lookup(AFI_IP6, | |
99 | OFFSET_LIST_IN_NAME(offset)); | |
100 | ||
101 | if (alist | |
102 | && access_list_apply(alist, (struct prefix *)p) | |
103 | == FILTER_PERMIT) { | |
104 | *metric += OFFSET_LIST_IN_METRIC(offset); | |
105 | return 1; | |
106 | } | |
107 | return 0; | |
a94434b6 | 108 | } |
d62a17ae | 109 | /* Look up offset-list without interface name. */ |
5c84b9a5 | 110 | offset = ripng_offset_list_lookup(ripng, "*"); |
d62a17ae | 111 | if (offset && OFFSET_LIST_IN_NAME(offset)) { |
112 | alist = access_list_lookup(AFI_IP6, | |
113 | OFFSET_LIST_IN_NAME(offset)); | |
114 | ||
115 | if (alist | |
116 | && access_list_apply(alist, (struct prefix *)p) | |
117 | == FILTER_PERMIT) { | |
118 | *metric += OFFSET_LIST_IN_METRIC(offset); | |
119 | return 1; | |
120 | } | |
121 | return 0; | |
a94434b6 | 122 | } |
d62a17ae | 123 | return 0; |
a94434b6 | 124 | } |
125 | ||
126 | /* If metric is modifed return 1. */ | |
5c84b9a5 RW |
127 | int ripng_offset_list_apply_out(struct ripng *ripng, struct prefix_ipv6 *p, |
128 | struct interface *ifp, uint8_t *metric) | |
a94434b6 | 129 | { |
d62a17ae | 130 | struct ripng_offset_list *offset; |
131 | struct access_list *alist; | |
132 | ||
133 | /* Look up offset-list with interface name. */ | |
5c84b9a5 | 134 | offset = ripng_offset_list_lookup(ripng, ifp->name); |
d62a17ae | 135 | if (offset && OFFSET_LIST_OUT_NAME(offset)) { |
136 | alist = access_list_lookup(AFI_IP6, | |
137 | OFFSET_LIST_OUT_NAME(offset)); | |
138 | ||
139 | if (alist | |
140 | && access_list_apply(alist, (struct prefix *)p) | |
141 | == FILTER_PERMIT) { | |
142 | *metric += OFFSET_LIST_OUT_METRIC(offset); | |
143 | return 1; | |
144 | } | |
145 | return 0; | |
a94434b6 | 146 | } |
d62a17ae | 147 | |
148 | /* Look up offset-list without interface name. */ | |
5c84b9a5 | 149 | offset = ripng_offset_list_lookup(ripng, "*"); |
d62a17ae | 150 | if (offset && OFFSET_LIST_OUT_NAME(offset)) { |
151 | alist = access_list_lookup(AFI_IP6, | |
152 | OFFSET_LIST_OUT_NAME(offset)); | |
153 | ||
154 | if (alist | |
155 | && access_list_apply(alist, (struct prefix *)p) | |
156 | == FILTER_PERMIT) { | |
157 | *metric += OFFSET_LIST_OUT_METRIC(offset); | |
158 | return 1; | |
159 | } | |
160 | return 0; | |
a94434b6 | 161 | } |
d62a17ae | 162 | return 0; |
a94434b6 | 163 | } |
164 | ||
26c6be93 | 165 | int offset_list_cmp(struct ripng_offset_list *o1, struct ripng_offset_list *o2) |
a94434b6 | 166 | { |
b09956ca | 167 | return strcmp(o1->ifname, o2->ifname); |
a94434b6 | 168 | } |