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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 | |
17 | * along with GNU Zebra; see the file COPYING. If not, write to the Free | |
18 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
19 | * 02111-1307, USA. | |
20 | */ | |
21 | ||
22 | /* RIPng support added by Vincent Jardin <vincent.jardin@6wind.com> | |
23 | * Copyright (C) 2002 6WIND | |
24 | */ | |
25 | ||
26 | #include <zebra.h> | |
27 | ||
28 | #include "if.h" | |
29 | #include "prefix.h" | |
30 | #include "command.h" | |
31 | #include "linklist.h" | |
32 | #include "thread.h" | |
33 | #include "memory.h" | |
34 | ||
35 | #include "ripngd/ripngd.h" | |
36 | #include "ripngd/ripng_nexthop.h" | |
37 | ||
38 | ||
39 | /* Linked list of RIPng peer. */ | |
40 | struct list *peer_list; | |
41 | ||
42 | static struct ripng_peer * | |
43 | ripng_peer_new (void) | |
44 | { | |
45 | return XCALLOC (MTYPE_RIPNG_PEER, sizeof (struct ripng_peer)); | |
46 | } | |
47 | ||
48 | static void | |
49 | ripng_peer_free (struct ripng_peer *peer) | |
50 | { | |
51 | XFREE (MTYPE_RIPNG_PEER, peer); | |
52 | } | |
53 | ||
54 | struct ripng_peer * | |
55 | ripng_peer_lookup (struct in6_addr *addr) | |
56 | { | |
57 | struct ripng_peer *peer; | |
58 | struct listnode *node, *nnode; | |
59 | ||
60 | for (ALL_LIST_ELEMENTS (peer_list, node, nnode, peer)) | |
61 | { | |
62 | if (IPV6_ADDR_SAME (&peer->addr, addr)) | |
63 | return peer; | |
64 | } | |
65 | return NULL; | |
66 | } | |
67 | ||
68 | struct ripng_peer * | |
69 | ripng_peer_lookup_next (struct in6_addr *addr) | |
70 | { | |
71 | struct ripng_peer *peer; | |
72 | struct listnode *node, *nnode; | |
73 | ||
74 | for (ALL_LIST_ELEMENTS (peer_list, node, nnode, peer)) | |
75 | { | |
76 | if (addr6_cmp(&peer->addr, addr) > 0) | |
77 | return peer; | |
78 | } | |
79 | return NULL; | |
80 | } | |
81 | ||
82 | /* RIPng peer is timeout. | |
83 | * Garbage collector. | |
84 | **/ | |
85 | static int | |
86 | ripng_peer_timeout (struct thread *t) | |
87 | { | |
88 | struct ripng_peer *peer; | |
89 | ||
90 | peer = THREAD_ARG (t); | |
91 | listnode_delete (peer_list, peer); | |
92 | ripng_peer_free (peer); | |
93 | ||
94 | return 0; | |
95 | } | |
96 | ||
97 | /* Get RIPng peer. At the same time update timeout thread. */ | |
98 | static struct ripng_peer * | |
99 | ripng_peer_get (struct in6_addr *addr) | |
100 | { | |
101 | struct ripng_peer *peer; | |
102 | ||
103 | peer = ripng_peer_lookup (addr); | |
104 | ||
105 | if (peer) | |
106 | { | |
107 | if (peer->t_timeout) | |
108 | thread_cancel (peer->t_timeout); | |
109 | } | |
110 | else | |
111 | { | |
112 | peer = ripng_peer_new (); | |
113 | peer->addr = *addr; /* XXX */ | |
114 | listnode_add_sort (peer_list, peer); | |
115 | } | |
116 | ||
117 | /* Update timeout thread. */ | |
118 | peer->t_timeout = NULL; | |
119 | thread_add_timer(master, ripng_peer_timeout, peer, RIPNG_PEER_TIMER_DEFAULT, | |
120 | &peer->t_timeout); | |
121 | ||
122 | /* Last update time set. */ | |
123 | time (&peer->uptime); | |
124 | ||
125 | return peer; | |
126 | } | |
127 | ||
128 | void | |
129 | ripng_peer_update (struct sockaddr_in6 *from, u_char version) | |
130 | { | |
131 | struct ripng_peer *peer; | |
132 | peer = ripng_peer_get (&from->sin6_addr); | |
133 | peer->version = version; | |
134 | } | |
135 | ||
136 | void | |
137 | ripng_peer_bad_route (struct sockaddr_in6 *from) | |
138 | { | |
139 | struct ripng_peer *peer; | |
140 | peer = ripng_peer_get (&from->sin6_addr); | |
141 | peer->recv_badroutes++; | |
142 | } | |
143 | ||
144 | void | |
145 | ripng_peer_bad_packet (struct sockaddr_in6 *from) | |
146 | { | |
147 | struct ripng_peer *peer; | |
148 | peer = ripng_peer_get (&from->sin6_addr); | |
149 | peer->recv_badpackets++; | |
150 | } | |
151 | ||
152 | /* Display peer uptime. */ | |
153 | static char * | |
154 | ripng_peer_uptime (struct ripng_peer *peer, char *buf, size_t len) | |
155 | { | |
156 | time_t uptime; | |
157 | struct tm *tm; | |
158 | ||
159 | /* If there is no connection has been done before print `never'. */ | |
160 | if (peer->uptime == 0) | |
161 | { | |
162 | snprintf (buf, len, "never "); | |
163 | return buf; | |
164 | } | |
165 | ||
166 | /* Get current time. */ | |
167 | uptime = time (NULL); | |
168 | uptime -= peer->uptime; | |
169 | tm = gmtime (&uptime); | |
170 | ||
171 | /* Making formatted timer strings. */ | |
172 | #define ONE_DAY_SECOND 60*60*24 | |
173 | #define ONE_WEEK_SECOND 60*60*24*7 | |
174 | ||
175 | if (uptime < ONE_DAY_SECOND) | |
176 | snprintf (buf, len, "%02d:%02d:%02d", | |
177 | tm->tm_hour, tm->tm_min, tm->tm_sec); | |
178 | else if (uptime < ONE_WEEK_SECOND) | |
179 | snprintf (buf, len, "%dd%02dh%02dm", | |
180 | tm->tm_yday, tm->tm_hour, tm->tm_min); | |
181 | else | |
182 | snprintf (buf, len, "%02dw%dd%02dh", | |
183 | tm->tm_yday/7, tm->tm_yday - ((tm->tm_yday/7) * 7), tm->tm_hour); | |
184 | return buf; | |
185 | } | |
186 | ||
187 | void | |
188 | ripng_peer_display (struct vty *vty) | |
189 | { | |
190 | struct ripng_peer *peer; | |
191 | struct listnode *node, *nnode; | |
192 | #define RIPNG_UPTIME_LEN 25 | |
193 | char timebuf[RIPNG_UPTIME_LEN]; | |
194 | ||
195 | for (ALL_LIST_ELEMENTS (peer_list, node, nnode, peer)) | |
196 | { | |
197 | vty_out (vty, " %s %s%14s %10d %10d %10d %s%s", inet6_ntoa (peer->addr), | |
198 | VTY_NEWLINE, " ", | |
199 | peer->recv_badpackets, peer->recv_badroutes, | |
200 | ZEBRA_RIPNG_DISTANCE_DEFAULT, | |
201 | ripng_peer_uptime (peer, timebuf, RIPNG_UPTIME_LEN), | |
202 | VTY_NEWLINE); | |
203 | } | |
204 | } | |
205 | ||
206 | static int | |
207 | ripng_peer_list_cmp (struct ripng_peer *p1, struct ripng_peer *p2) | |
208 | { | |
209 | return addr6_cmp(&p1->addr, &p2->addr) > 0; | |
210 | } | |
211 | ||
212 | void | |
213 | ripng_peer_init () | |
214 | { | |
215 | peer_list = list_new (); | |
216 | peer_list->cmp = (int (*)(void *, void *)) ripng_peer_list_cmp; | |
217 | } |