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1 | /* RIPng peer support | |
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 | * | |
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 | |
19 | */ | |
20 | ||
21 | /* RIPng support added by Vincent Jardin <vincent.jardin@6wind.com> | |
22 | * Copyright (C) 2002 6WIND | |
23 | */ | |
24 | ||
25 | #include <zebra.h> | |
26 | ||
27 | #include "if.h" | |
28 | #include "prefix.h" | |
29 | #include "command.h" | |
30 | #include "linklist.h" | |
31 | #include "thread.h" | |
32 | #include "memory.h" | |
33 | ||
34 | #include "ripngd/ripngd.h" | |
35 | #include "ripngd/ripng_nexthop.h" | |
36 | ||
37 | ||
38 | /* Linked list of RIPng peer. */ | |
39 | struct list *peer_list; | |
40 | ||
41 | static struct ripng_peer *ripng_peer_new(void) | |
42 | { | |
43 | return XCALLOC(MTYPE_RIPNG_PEER, sizeof(struct ripng_peer)); | |
44 | } | |
45 | ||
46 | static void ripng_peer_free(struct ripng_peer *peer) | |
47 | { | |
48 | XFREE(MTYPE_RIPNG_PEER, peer); | |
49 | } | |
50 | ||
51 | struct ripng_peer *ripng_peer_lookup(struct in6_addr *addr) | |
52 | { | |
53 | struct ripng_peer *peer; | |
54 | struct listnode *node, *nnode; | |
55 | ||
56 | for (ALL_LIST_ELEMENTS(peer_list, node, nnode, peer)) { | |
57 | if (IPV6_ADDR_SAME(&peer->addr, addr)) | |
58 | return peer; | |
59 | } | |
60 | return NULL; | |
61 | } | |
62 | ||
63 | struct ripng_peer *ripng_peer_lookup_next(struct in6_addr *addr) | |
64 | { | |
65 | struct ripng_peer *peer; | |
66 | struct listnode *node, *nnode; | |
67 | ||
68 | for (ALL_LIST_ELEMENTS(peer_list, node, nnode, peer)) { | |
69 | if (addr6_cmp(&peer->addr, addr) > 0) | |
70 | return peer; | |
71 | } | |
72 | return NULL; | |
73 | } | |
74 | ||
75 | /* RIPng peer is timeout. | |
76 | * Garbage collector. | |
77 | **/ | |
78 | static int ripng_peer_timeout(struct thread *t) | |
79 | { | |
80 | struct ripng_peer *peer; | |
81 | ||
82 | peer = THREAD_ARG(t); | |
83 | listnode_delete(peer_list, peer); | |
84 | ripng_peer_free(peer); | |
85 | ||
86 | return 0; | |
87 | } | |
88 | ||
89 | /* Get RIPng peer. At the same time update timeout thread. */ | |
90 | static struct ripng_peer *ripng_peer_get(struct in6_addr *addr) | |
91 | { | |
92 | struct ripng_peer *peer; | |
93 | ||
94 | peer = ripng_peer_lookup(addr); | |
95 | ||
96 | if (peer) { | |
97 | if (peer->t_timeout) | |
98 | thread_cancel(peer->t_timeout); | |
99 | } else { | |
100 | peer = ripng_peer_new(); | |
101 | peer->addr = *addr; /* XXX */ | |
102 | listnode_add_sort(peer_list, peer); | |
103 | } | |
104 | ||
105 | /* Update timeout thread. */ | |
106 | peer->t_timeout = NULL; | |
107 | thread_add_timer(master, ripng_peer_timeout, peer, | |
108 | RIPNG_PEER_TIMER_DEFAULT, &peer->t_timeout); | |
109 | ||
110 | /* Last update time set. */ | |
111 | time(&peer->uptime); | |
112 | ||
113 | return peer; | |
114 | } | |
115 | ||
116 | void ripng_peer_update(struct sockaddr_in6 *from, uint8_t version) | |
117 | { | |
118 | struct ripng_peer *peer; | |
119 | peer = ripng_peer_get(&from->sin6_addr); | |
120 | peer->version = version; | |
121 | } | |
122 | ||
123 | void ripng_peer_bad_route(struct sockaddr_in6 *from) | |
124 | { | |
125 | struct ripng_peer *peer; | |
126 | peer = ripng_peer_get(&from->sin6_addr); | |
127 | peer->recv_badroutes++; | |
128 | } | |
129 | ||
130 | void ripng_peer_bad_packet(struct sockaddr_in6 *from) | |
131 | { | |
132 | struct ripng_peer *peer; | |
133 | peer = ripng_peer_get(&from->sin6_addr); | |
134 | peer->recv_badpackets++; | |
135 | } | |
136 | ||
137 | /* Display peer uptime. */ | |
138 | static char *ripng_peer_uptime(struct ripng_peer *peer, char *buf, size_t len) | |
139 | { | |
140 | time_t uptime; | |
141 | struct tm *tm; | |
142 | ||
143 | /* If there is no connection has been done before print `never'. */ | |
144 | if (peer->uptime == 0) { | |
145 | snprintf(buf, len, "never "); | |
146 | return buf; | |
147 | } | |
148 | ||
149 | /* Get current time. */ | |
150 | uptime = time(NULL); | |
151 | uptime -= peer->uptime; | |
152 | tm = gmtime(&uptime); | |
153 | ||
154 | if (uptime < ONE_DAY_SECOND) | |
155 | snprintf(buf, len, "%02d:%02d:%02d", tm->tm_hour, tm->tm_min, | |
156 | tm->tm_sec); | |
157 | else if (uptime < ONE_WEEK_SECOND) | |
158 | snprintf(buf, len, "%dd%02dh%02dm", tm->tm_yday, tm->tm_hour, | |
159 | tm->tm_min); | |
160 | else | |
161 | snprintf(buf, len, "%02dw%dd%02dh", tm->tm_yday / 7, | |
162 | tm->tm_yday - ((tm->tm_yday / 7) * 7), tm->tm_hour); | |
163 | return buf; | |
164 | } | |
165 | ||
166 | void ripng_peer_display(struct vty *vty) | |
167 | { | |
168 | struct ripng_peer *peer; | |
169 | struct listnode *node, *nnode; | |
170 | #define RIPNG_UPTIME_LEN 25 | |
171 | char timebuf[RIPNG_UPTIME_LEN]; | |
172 | ||
173 | for (ALL_LIST_ELEMENTS(peer_list, node, nnode, peer)) { | |
174 | vty_out(vty, " %s \n%14s %10d %10d %10d %s\n", | |
175 | inet6_ntoa(peer->addr), " ", peer->recv_badpackets, | |
176 | peer->recv_badroutes, ZEBRA_RIPNG_DISTANCE_DEFAULT, | |
177 | ripng_peer_uptime(peer, timebuf, RIPNG_UPTIME_LEN)); | |
178 | } | |
179 | } | |
180 | ||
181 | static int ripng_peer_list_cmp(struct ripng_peer *p1, struct ripng_peer *p2) | |
182 | { | |
183 | return addr6_cmp(&p1->addr, &p2->addr) > 0; | |
184 | } | |
185 | ||
186 | void ripng_peer_init() | |
187 | { | |
188 | peer_list = list_new(); | |
189 | peer_list->cmp = (int (*)(void *, void *))ripng_peer_list_cmp; | |
190 | } |