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718e3744 | 1 | /* RIP 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 | |
718e3744 | 19 | */ |
20 | ||
21 | #include <zebra.h> | |
22 | ||
23 | #include "if.h" | |
24 | #include "prefix.h" | |
25 | #include "filter.h" | |
26 | #include "command.h" | |
27 | #include "linklist.h" | |
28 | #include "memory.h" | |
29 | ||
dc63bfd4 | 30 | #include "ripd/ripd.h" |
31 | ||
718e3744 | 32 | static struct list *rip_offset_list_master; |
33 | ||
8c942f65 RW |
34 | #define OFFSET_LIST_IN_NAME(O) ((O)->direct[RIP_OFFSET_LIST_IN].alist_name) |
35 | #define OFFSET_LIST_IN_METRIC(O) ((O)->direct[RIP_OFFSET_LIST_IN].metric) | |
718e3744 | 36 | |
8c942f65 RW |
37 | #define OFFSET_LIST_OUT_NAME(O) ((O)->direct[RIP_OFFSET_LIST_OUT].alist_name) |
38 | #define OFFSET_LIST_OUT_METRIC(O) ((O)->direct[RIP_OFFSET_LIST_OUT].metric) | |
718e3744 | 39 | |
8c942f65 | 40 | struct rip_offset_list *rip_offset_list_new(const char *ifname) |
718e3744 | 41 | { |
d62a17ae | 42 | struct rip_offset_list *offset; |
43 | ||
8c942f65 RW |
44 | offset = XCALLOC(MTYPE_RIP_OFFSET_LIST, sizeof(struct rip_offset_list)); |
45 | offset->ifname = strdup(ifname); | |
d62a17ae | 46 | listnode_add_sort(rip_offset_list_master, offset); |
47 | ||
48 | return offset; | |
718e3744 | 49 | } |
50 | ||
8c942f65 | 51 | void offset_list_del(struct rip_offset_list *offset) |
718e3744 | 52 | { |
8c942f65 RW |
53 | listnode_delete(rip_offset_list_master, offset); |
54 | if (OFFSET_LIST_IN_NAME(offset)) | |
55 | free(OFFSET_LIST_IN_NAME(offset)); | |
56 | if (OFFSET_LIST_OUT_NAME(offset)) | |
57 | free(OFFSET_LIST_OUT_NAME(offset)); | |
58 | free(offset->ifname); | |
59 | XFREE(MTYPE_RIP_OFFSET_LIST, offset); | |
718e3744 | 60 | } |
61 | ||
8c942f65 | 62 | struct rip_offset_list *rip_offset_list_lookup(const char *ifname) |
718e3744 | 63 | { |
d62a17ae | 64 | struct rip_offset_list *offset; |
8c942f65 | 65 | struct listnode *node, *nnode; |
d62a17ae | 66 | |
8c942f65 RW |
67 | for (ALL_LIST_ELEMENTS(rip_offset_list_master, node, nnode, offset)) { |
68 | if (strcmp(offset->ifname, ifname) == 0) | |
69 | return offset; | |
d62a17ae | 70 | } |
8c942f65 | 71 | return NULL; |
718e3744 | 72 | } |
73 | ||
718e3744 | 74 | /* If metric is modifed return 1. */ |
d62a17ae | 75 | int rip_offset_list_apply_in(struct prefix_ipv4 *p, struct interface *ifp, |
d7c0a89a | 76 | uint32_t *metric) |
718e3744 | 77 | { |
d62a17ae | 78 | struct rip_offset_list *offset; |
79 | struct access_list *alist; | |
80 | ||
81 | /* Look up offset-list with interface name. */ | |
82 | offset = rip_offset_list_lookup(ifp->name); | |
83 | if (offset && OFFSET_LIST_IN_NAME(offset)) { | |
84 | alist = access_list_lookup(AFI_IP, OFFSET_LIST_IN_NAME(offset)); | |
85 | ||
86 | if (alist | |
87 | && access_list_apply(alist, (struct prefix *)p) | |
88 | == FILTER_PERMIT) { | |
89 | *metric += OFFSET_LIST_IN_METRIC(offset); | |
90 | return 1; | |
91 | } | |
92 | return 0; | |
718e3744 | 93 | } |
d62a17ae | 94 | /* Look up offset-list without interface name. */ |
8c942f65 | 95 | offset = rip_offset_list_lookup("*"); |
d62a17ae | 96 | if (offset && OFFSET_LIST_IN_NAME(offset)) { |
97 | alist = access_list_lookup(AFI_IP, OFFSET_LIST_IN_NAME(offset)); | |
98 | ||
99 | if (alist | |
100 | && access_list_apply(alist, (struct prefix *)p) | |
101 | == FILTER_PERMIT) { | |
102 | *metric += OFFSET_LIST_IN_METRIC(offset); | |
103 | return 1; | |
104 | } | |
105 | return 0; | |
718e3744 | 106 | } |
d62a17ae | 107 | return 0; |
718e3744 | 108 | } |
109 | ||
110 | /* If metric is modifed return 1. */ | |
d62a17ae | 111 | int rip_offset_list_apply_out(struct prefix_ipv4 *p, struct interface *ifp, |
d7c0a89a | 112 | uint32_t *metric) |
718e3744 | 113 | { |
d62a17ae | 114 | struct rip_offset_list *offset; |
115 | struct access_list *alist; | |
116 | ||
117 | /* Look up offset-list with interface name. */ | |
118 | offset = rip_offset_list_lookup(ifp->name); | |
119 | if (offset && OFFSET_LIST_OUT_NAME(offset)) { | |
120 | alist = access_list_lookup(AFI_IP, | |
121 | OFFSET_LIST_OUT_NAME(offset)); | |
122 | ||
123 | if (alist | |
124 | && access_list_apply(alist, (struct prefix *)p) | |
125 | == FILTER_PERMIT) { | |
126 | *metric += OFFSET_LIST_OUT_METRIC(offset); | |
127 | return 1; | |
128 | } | |
129 | return 0; | |
718e3744 | 130 | } |
d62a17ae | 131 | |
132 | /* Look up offset-list without interface name. */ | |
8c942f65 | 133 | offset = rip_offset_list_lookup("*"); |
d62a17ae | 134 | if (offset && OFFSET_LIST_OUT_NAME(offset)) { |
135 | alist = access_list_lookup(AFI_IP, | |
136 | OFFSET_LIST_OUT_NAME(offset)); | |
137 | ||
138 | if (alist | |
139 | && access_list_apply(alist, (struct prefix *)p) | |
140 | == FILTER_PERMIT) { | |
141 | *metric += OFFSET_LIST_OUT_METRIC(offset); | |
142 | return 1; | |
143 | } | |
144 | return 0; | |
718e3744 | 145 | } |
d62a17ae | 146 | return 0; |
718e3744 | 147 | } |
148 | ||
d62a17ae | 149 | static int offset_list_cmp(struct rip_offset_list *o1, |
150 | struct rip_offset_list *o2) | |
718e3744 | 151 | { |
8c942f65 | 152 | return strcmp(o1->ifname, o2->ifname); |
718e3744 | 153 | } |
154 | ||
d62a17ae | 155 | void rip_offset_init() |
718e3744 | 156 | { |
d62a17ae | 157 | rip_offset_list_master = list_new(); |
158 | rip_offset_list_master->cmp = (int (*)(void *, void *))offset_list_cmp; | |
159 | rip_offset_list_master->del = (void (*)(void *))offset_list_del; | |
718e3744 | 160 | } |
161 | ||
d62a17ae | 162 | void rip_offset_clean() |
718e3744 | 163 | { |
6a154c88 | 164 | list_delete(&rip_offset_list_master); |
718e3744 | 165 | |
d62a17ae | 166 | rip_offset_list_master = list_new(); |
167 | rip_offset_list_master->cmp = (int (*)(void *, void *))offset_list_cmp; | |
168 | rip_offset_list_master->del = (void (*)(void *))offset_list_del; | |
718e3744 | 169 | } |