]>
Commit | Line | Data |
---|---|---|
43c02e7b VB |
1 | /* |
2 | * Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx> | |
3 | * | |
4 | * Permission to use, copy, modify, and distribute this software for any | |
5 | * purpose with or without fee is hereby granted, provided that the above | |
6 | * copyright notice and this permission notice appear in all copies. | |
7 | * | |
8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
15 | */ | |
16 | ||
17 | #include "lldpd.h" | |
18 | ||
19 | #include <stdio.h> | |
20 | #include <unistd.h> | |
21 | #include <errno.h> | |
22 | #include <signal.h> | |
23 | #include <sys/stat.h> | |
24 | #include <fcntl.h> | |
25 | #include <fnmatch.h> | |
26 | #include <time.h> | |
a2993d83 | 27 | #include <libgen.h> |
43c02e7b VB |
28 | #include <sys/utsname.h> |
29 | #include <sys/types.h> | |
30 | #include <sys/socket.h> | |
31 | #include <sys/select.h> | |
32 | #include <sys/time.h> | |
33 | #include <sys/ioctl.h> | |
34 | #include <arpa/inet.h> | |
35 | #include <netpacket/packet.h> | |
36 | #include <ifaddrs.h> | |
37 | #include <net/if_arp.h> | |
38 | #include <linux/filter.h> | |
39 | #include <linux/if_vlan.h> | |
40 | #include <linux/sockios.h> | |
43c02e7b VB |
41 | |
42 | #ifdef USE_SNMP | |
43 | #include <net-snmp/net-snmp-config.h> | |
44 | #include <net-snmp/net-snmp-includes.h> | |
45 | #include <net-snmp/agent/net-snmp-agent-includes.h> | |
46 | #include <net-snmp/agent/snmp_vars.h> | |
47 | #endif /* USE_SNMP */ | |
48 | ||
49 | void usage(void); | |
50 | ||
51 | int lldpd_iface_init(struct lldpd *, struct lldpd_hardware *); | |
50a89ca7 VB |
52 | int lldpd_iface_init_vlan(struct lldpd *, struct lldpd_vif *); |
53 | void lldpd_iface_init_mtu(struct lldpd *, struct lldpd_hardware *); | |
43c02e7b VB |
54 | int lldpd_iface_close(struct lldpd *, struct lldpd_hardware *); |
55 | void lldpd_iface_multicast(struct lldpd *, const char *, int); | |
56 | ||
57 | /* "ether proto 0x88cc and ether dst 01:80:c2:00:00:0e" */ | |
58 | #define LLDPD_FILTER_LLDP_F \ | |
59 | { 0x28, 0, 0, 0x0000000c }, \ | |
60 | { 0x15, 0, 5, 0x000088cc }, \ | |
61 | { 0x20, 0, 0, 0x00000002 }, \ | |
62 | { 0x15, 0, 3, 0xc200000e }, \ | |
63 | { 0x28, 0, 0, 0x00000000 }, \ | |
64 | { 0x15, 0, 1, 0x00000180 }, \ | |
65 | { 0x6, 0, 0, 0x0000ffff }, \ | |
66 | { 0x6, 0, 0, 0x00000000 }, | |
67 | struct sock_filter lldpd_filter_lldp_f[] = { LLDPD_FILTER_LLDP_F }; | |
031118c4 VB |
68 | /* "ether dst 01:e0:52:cc:cc:cc" */ |
69 | #define LLDPD_FILTER_FDP_F \ | |
70 | { 0x20, 0, 0, 0x00000002 }, \ | |
71 | { 0x15, 0, 3, 0x52cccccc }, \ | |
72 | { 0x28, 0, 0, 0x00000000 }, \ | |
73 | { 0x15, 0, 1, 0x000001e0 }, \ | |
74 | { 0x6, 0, 0, 0x0000ffff }, \ | |
75 | { 0x6, 0, 0, 0x00000000 }, | |
76 | struct sock_filter lldpd_filter_fdp_f[] = { LLDPD_FILTER_FDP_F }; | |
348f6df6 | 77 | /* "ether dst 01:00:0c:cc:cc:cc" */ |
43c02e7b | 78 | #define LLDPD_FILTER_CDP_F \ |
348f6df6 VB |
79 | { 0x20, 0, 0, 0x00000002 }, \ |
80 | { 0x15, 0, 3, 0x0ccccccc }, \ | |
81 | { 0x28, 0, 0, 0x00000000 }, \ | |
82 | { 0x15, 0, 1, 0x00000100 }, \ | |
83 | { 0x6, 0, 0, 0x0000ffff }, \ | |
84 | { 0x6, 0, 0, 0x00000000 }, | |
43c02e7b VB |
85 | struct sock_filter lldpd_filter_cdp_f[] = { LLDPD_FILTER_CDP_F }; |
86 | /* "ether dst 01:00:81:00:01:00" */ | |
87 | #define LLDPD_FILTER_SONMP_F \ | |
88 | { 0x20, 0, 0, 0x00000002 }, \ | |
89 | { 0x15, 0, 3, 0x81000100 }, \ | |
90 | { 0x28, 0, 0, 0x00000000 }, \ | |
91 | { 0x15, 0, 1, 0x00000100 }, \ | |
92 | { 0x6, 0, 0, 0x0000ffff }, \ | |
93 | { 0x6, 0, 0, 0x00000000 }, | |
94 | struct sock_filter lldpd_filter_sonmp_f[] = { LLDPD_FILTER_SONMP_F }; | |
95 | /* "ether dst 00:e0:2b:00:00:00" */ | |
96 | #define LLDPD_FILTER_EDP_F \ | |
97 | { 0x20, 0, 0, 0x00000002 }, \ | |
98 | { 0x15, 0, 3, 0x2b000000 }, \ | |
99 | { 0x28, 0, 0, 0x00000000 }, \ | |
100 | { 0x15, 0, 1, 0x000000e0 }, \ | |
101 | { 0x6, 0, 0, 0x0000ffff }, \ | |
102 | { 0x6, 0, 0, 0x00000000 }, | |
103 | struct sock_filter lldpd_filter_edp_f[] = { LLDPD_FILTER_EDP_F }; | |
104 | #define LLDPD_FILTER_ANY_F \ | |
105 | { 0x28, 0, 0, 0x0000000c }, \ | |
106 | { 0x15, 0, 4, 0x000088cc }, \ | |
107 | { 0x20, 0, 0, 0x00000002 }, \ | |
108 | { 0x15, 0, 2, 0xc200000e }, \ | |
109 | { 0x28, 0, 0, 0x00000000 }, \ | |
031118c4 | 110 | { 0x15, 11, 12, 0x00000180 }, \ |
43c02e7b VB |
111 | { 0x20, 0, 0, 0x00000002 }, \ |
112 | { 0x15, 0, 2, 0x2b000000 }, \ | |
113 | { 0x28, 0, 0, 0x00000000 }, \ | |
031118c4 | 114 | { 0x15, 7, 8, 0x000000e0 }, \ |
43c02e7b | 115 | { 0x15, 1, 0, 0x0ccccccc }, \ |
031118c4 VB |
116 | { 0x15, 0, 2, 0x81000100 }, \ |
117 | { 0x28, 0, 0, 0x00000000 }, \ | |
118 | { 0x15, 3, 4, 0x00000100 }, \ | |
119 | { 0x15, 0, 3, 0x52cccccc }, \ | |
43c02e7b | 120 | { 0x28, 0, 0, 0x00000000 }, \ |
031118c4 | 121 | { 0x15, 0, 1, 0x000001e0 }, \ |
43c02e7b VB |
122 | { 0x6, 0, 0, 0x0000ffff }, \ |
123 | { 0x6, 0, 0, 0x00000000 }, | |
124 | struct sock_filter lldpd_filter_any_f[] = { LLDPD_FILTER_ANY_F }; | |
125 | ||
126 | struct protocol protos[] = | |
127 | { | |
128 | { LLDPD_MODE_LLDP, 1, "LLDP", ' ', lldp_send, lldp_decode, NULL, | |
129 | LLDP_MULTICAST_ADDR, lldpd_filter_lldp_f, sizeof(lldpd_filter_lldp_f) }, | |
130 | { LLDPD_MODE_CDPV1, 0, "CDPv1", 'c', cdpv1_send, cdp_decode, cdpv1_guess, | |
131 | CDP_MULTICAST_ADDR, lldpd_filter_cdp_f, sizeof(lldpd_filter_cdp_f) }, | |
132 | { LLDPD_MODE_CDPV2, 0, "CDPv2", 'c', cdpv2_send, cdp_decode, cdpv2_guess, | |
133 | CDP_MULTICAST_ADDR, lldpd_filter_cdp_f, sizeof(lldpd_filter_cdp_f) }, | |
134 | { LLDPD_MODE_SONMP, 0, "SONMP", 's', sonmp_send, sonmp_decode, NULL, | |
135 | SONMP_MULTICAST_ADDR, lldpd_filter_sonmp_f, sizeof(lldpd_filter_sonmp_f) }, | |
136 | { LLDPD_MODE_EDP, 0, "EDP", 'e', edp_send, edp_decode, NULL, | |
137 | EDP_MULTICAST_ADDR, lldpd_filter_edp_f, sizeof(lldpd_filter_edp_f) }, | |
031118c4 VB |
138 | { LLDPD_MODE_FDP, 0, "FDP", 'f', fdp_send, cdp_decode, NULL, |
139 | FDP_MULTICAST_ADDR, lldpd_filter_fdp_f, sizeof(lldpd_filter_fdp_f) }, | |
43c02e7b VB |
140 | { 0, 0, "any", ' ', NULL, NULL, NULL, |
141 | {0,0,0,0,0,0}, lldpd_filter_any_f, sizeof(lldpd_filter_any_f) } | |
142 | }; | |
143 | ||
144 | int lldpd_iface_switchto(struct lldpd *, short int, | |
145 | struct lldpd_hardware *); | |
146 | struct lldpd_hardware *lldpd_port_add(struct lldpd *, struct ifaddrs *); | |
147 | void lldpd_loop(struct lldpd *); | |
43c02e7b VB |
148 | void lldpd_shutdown(int); |
149 | void lldpd_exit(); | |
150 | void lldpd_send_all(struct lldpd *); | |
151 | void lldpd_recv_all(struct lldpd *); | |
152 | int lldpd_guess_type(struct lldpd *, char *, int); | |
153 | void lldpd_decode(struct lldpd *, char *, int, | |
154 | struct lldpd_hardware *, int); | |
43c02e7b VB |
155 | |
156 | char **saved_argv; | |
157 | ||
158 | void | |
159 | usage(void) | |
160 | { | |
161 | extern const char *__progname; | |
162 | #ifndef USE_SNMP | |
031118c4 | 163 | fprintf(stderr, "usage: %s [-dvcse] [-p|-P] [-m ip]\n", __progname); |
43c02e7b | 164 | #else /* USE_SNMP */ |
031118c4 | 165 | fprintf(stderr, "usage: %s [-dvcsex] [-p|-P] [-m ip]\n", __progname); |
43c02e7b VB |
166 | #endif /* USE_SNMP */ |
167 | exit(1); | |
168 | } | |
169 | ||
50a89ca7 VB |
170 | void |
171 | lldpd_iface_init_mtu(struct lldpd *global, struct lldpd_hardware *hardware) | |
43c02e7b | 172 | { |
43c02e7b | 173 | struct ifreq ifr; |
43c02e7b VB |
174 | |
175 | /* get MTU */ | |
176 | memset(&ifr, 0, sizeof(ifr)); | |
177 | strlcpy(ifr.ifr_name, hardware->h_ifname, sizeof(ifr.ifr_name)); | |
178 | if (ioctl(global->g_sock, SIOCGIFMTU, (char*)&ifr) == -1) { | |
179 | LLOG_WARN("unable to get MTU of %s, using 1500", hardware->h_ifname); | |
180 | hardware->h_mtu = 1500; | |
181 | } else | |
182 | hardware->h_mtu = ifr.ifr_mtu; | |
50a89ca7 VB |
183 | } |
184 | ||
50a89ca7 VB |
185 | int |
186 | lldpd_iface_init_vlan(struct lldpd *global, struct lldpd_vif *vif) | |
187 | { | |
188 | int status; | |
189 | short int filter; | |
190 | ||
191 | lldpd_iface_init_mtu(global, (struct lldpd_hardware*)vif); | |
a7502371 | 192 | status = priv_iface_init((struct lldpd_hardware*)vif, -1); |
50a89ca7 VB |
193 | if (status != 0) |
194 | return status; | |
195 | ||
196 | if (global->g_multi) | |
197 | filter = LLDPD_MODE_ANY; | |
198 | else | |
199 | filter = LLDPD_MODE_LLDP; | |
200 | ||
201 | if (lldpd_iface_switchto(global, filter, | |
202 | (struct lldpd_hardware*)vif) == -1) { | |
203 | LLOG_WARNX("unable to apply filter"); | |
204 | return ENETDOWN; | |
205 | } | |
206 | ||
207 | lldpd_iface_multicast(global, vif->vif_ifname, 0); | |
208 | ||
209 | LLOG_DEBUG("vlan interface %s initialized (fd=%d)", vif->vif_ifname, | |
210 | vif->vif_raw); | |
211 | return 0; | |
212 | } | |
213 | ||
214 | int | |
215 | lldpd_iface_init(struct lldpd *global, struct lldpd_hardware *hardware) | |
216 | { | |
50a89ca7 VB |
217 | int master; /* Bond device */ |
218 | char if_bond[IFNAMSIZ]; | |
50a89ca7 VB |
219 | int status; |
220 | short int filter; | |
221 | ||
222 | lldpd_iface_init_mtu(global, hardware); | |
a7502371 | 223 | status = priv_iface_init(hardware, -1); |
50a89ca7 VB |
224 | if (status != 0) |
225 | return status; | |
226 | ||
43c02e7b VB |
227 | if ((master = iface_is_enslaved(global, hardware->h_ifname)) != -1) { |
228 | /* With bonding device, we need to listen on the bond ! */ | |
229 | if (if_indextoname(master, if_bond) == NULL) { | |
230 | LLOG_WARN("unable to get index for interface %d (master of %s)", | |
231 | master, hardware->h_ifname); | |
232 | return ENETDOWN; | |
233 | } | |
234 | hardware->h_raw_real = hardware->h_raw; | |
235 | hardware->h_master = master; | |
236 | hardware->h_raw = -1; | |
a7502371 VB |
237 | status = priv_iface_init(hardware, master); |
238 | if (status != 0) { | |
239 | close(hardware->h_raw_real); | |
240 | if (hardware->h_raw != -1) | |
241 | close(hardware->h_raw); | |
242 | return status; | |
243 | } | |
43c02e7b VB |
244 | } |
245 | ||
246 | if (global->g_multi) | |
247 | filter = LLDPD_MODE_ANY; | |
248 | else | |
249 | filter = LLDPD_MODE_LLDP; | |
250 | if (lldpd_iface_switchto(global, filter, hardware) == -1) { | |
251 | LLOG_WARNX("unable to apply filter"); | |
252 | return ENETDOWN; | |
253 | } | |
254 | ||
255 | if (master != -1) | |
256 | lldpd_iface_multicast(global, if_bond, 0); | |
257 | lldpd_iface_multicast(global, hardware->h_ifname, 0); | |
258 | ||
259 | LLOG_DEBUG("interface %s initialized (fd=%d)", hardware->h_ifname, | |
260 | hardware->h_raw); | |
261 | return 0; | |
262 | } | |
263 | ||
264 | void | |
265 | lldpd_iface_multicast(struct lldpd *global, const char *name, int remove) | |
266 | { | |
a7502371 | 267 | int i, rc; |
509861fe | 268 | |
43c02e7b VB |
269 | for (i=0; global->g_protocols[i].mode != 0; i++) { |
270 | if (!global->g_protocols[i].enabled) continue; | |
a7502371 VB |
271 | if ((rc = priv_iface_multicast(name, |
272 | global->g_protocols[i].mac, !remove)) != 0) { | |
273 | errno = rc; | |
274 | if (errno != ENOENT) | |
275 | LLOG_INFO("unable to %s %s address to multicast filter for %s", | |
276 | (remove)?"delete":"add", | |
277 | global->g_protocols[i].name, | |
278 | name); | |
43c02e7b VB |
279 | } |
280 | } | |
281 | } | |
282 | ||
283 | int | |
284 | lldpd_iface_close(struct lldpd *global, struct lldpd_hardware *hardware) | |
285 | { | |
286 | char listen[IFNAMSIZ]; | |
287 | ||
288 | close(hardware->h_raw); | |
289 | hardware->h_raw = -1; | |
290 | ||
291 | if (hardware->h_raw_real > 0) { | |
292 | if (if_indextoname(hardware->h_master, listen) == NULL) { | |
293 | LLOG_WARN("unable to get index for interface %d", | |
294 | hardware->h_master); | |
295 | strlcpy(listen, hardware->h_ifname, sizeof(listen)); | |
296 | } | |
297 | close(hardware->h_raw_real); | |
298 | lldpd_iface_multicast(global, listen, 1); | |
299 | } | |
300 | strlcpy(listen, hardware->h_ifname, sizeof(listen)); | |
301 | lldpd_iface_multicast(global, listen, 1); | |
302 | ||
303 | hardware->h_raw_real = -1; | |
304 | return 0; | |
305 | } | |
306 | ||
307 | int | |
308 | lldpd_iface_switchto(struct lldpd *cfg, short int filter, struct lldpd_hardware *hardware) | |
309 | { | |
310 | struct sock_fprog prog; | |
311 | int i; | |
312 | ||
313 | memset(&prog, 0, sizeof(prog)); | |
314 | for (i=0; cfg->g_protocols[i].mode != 0; i++) { | |
315 | if (!cfg->g_protocols[i].enabled) continue; | |
316 | if (cfg->g_protocols[i].mode == filter) | |
317 | break; | |
318 | } | |
319 | prog.filter = cfg->g_protocols[i].filter; | |
320 | prog.len = cfg->g_protocols[i].filterlen / sizeof(struct sock_filter); | |
321 | if (setsockopt(hardware->h_raw, SOL_SOCKET, SO_ATTACH_FILTER, | |
322 | &prog, sizeof(prog)) < 0) { | |
323 | LLOG_WARN("unable to change filter for %s", hardware->h_ifname); | |
324 | return -1; | |
325 | } | |
326 | if ((hardware->h_raw_real > 0) && | |
327 | (setsockopt(hardware->h_raw_real, SOL_SOCKET, SO_ATTACH_FILTER, | |
328 | &prog, sizeof(prog)) < 0)) { | |
329 | LLOG_WARN("unable to change filter for real device %s", hardware->h_ifname); | |
330 | return -1; | |
331 | } | |
332 | return 0; | |
333 | } | |
334 | ||
335 | ||
336 | void | |
337 | lldpd_vlan_cleanup(struct lldpd_port *port) | |
338 | { | |
339 | struct lldpd_vlan *vlan, *vlan_next; | |
340 | for (vlan = TAILQ_FIRST(&port->p_vlans); | |
341 | vlan != NULL; | |
342 | vlan = vlan_next) { | |
343 | free(vlan->v_name); | |
344 | vlan_next = TAILQ_NEXT(vlan, v_entries); | |
345 | TAILQ_REMOVE(&port->p_vlans, vlan, v_entries); | |
346 | free(vlan); | |
347 | } | |
348 | } | |
349 | ||
350 | void | |
351 | lldpd_port_cleanup(struct lldpd_port *port) | |
352 | { | |
353 | lldpd_vlan_cleanup(port); | |
354 | free(port->p_id); | |
355 | free(port->p_descr); | |
356 | free(port); | |
357 | } | |
358 | ||
359 | void | |
360 | lldpd_chassis_cleanup(struct lldpd_chassis *chassis) | |
361 | { | |
362 | free(chassis->c_id); | |
363 | free(chassis->c_name); | |
364 | free(chassis->c_descr); | |
365 | free(chassis); | |
366 | } | |
367 | ||
368 | void | |
369 | lldpd_remote_cleanup(struct lldpd *cfg, struct lldpd_hardware *hardware, int reset) | |
370 | { | |
371 | if (hardware->h_rport != NULL) { | |
372 | lldpd_port_cleanup(hardware->h_rport); | |
373 | hardware->h_rport = NULL; | |
374 | } | |
375 | if (hardware->h_rchassis != NULL) { | |
376 | lldpd_chassis_cleanup(hardware->h_rchassis); | |
377 | hardware->h_rchassis = NULL; | |
378 | } | |
379 | hardware->h_rlastchange = hardware->h_rlastupdate = 0; | |
380 | free(hardware->h_rlastframe); | |
381 | hardware->h_rlastframe = NULL; | |
382 | if (reset && cfg->g_multi) { | |
383 | hardware->h_mode = LLDPD_MODE_ANY; | |
384 | memset(hardware->h_proto_macs, 0, ETH_ALEN*(cfg->g_multi+1)); | |
385 | hardware->h_start_probe = 0; | |
386 | lldpd_iface_switchto(cfg, LLDPD_MODE_ANY, hardware); | |
387 | } | |
388 | } | |
389 | ||
390 | void | |
391 | lldpd_cleanup(struct lldpd *cfg) | |
392 | { | |
393 | struct lldpd_hardware *hardware, *hardware_next; | |
50a89ca7 | 394 | struct lldpd_vif *vif, *vif_next; |
43c02e7b VB |
395 | |
396 | for (hardware = TAILQ_FIRST(&cfg->g_hardware); hardware != NULL; | |
397 | hardware = hardware_next) { | |
398 | hardware_next = TAILQ_NEXT(hardware, h_entries); | |
399 | if (hardware->h_flags == 0) { | |
400 | TAILQ_REMOVE(&cfg->g_hardware, hardware, h_entries); | |
401 | lldpd_iface_close(cfg, hardware); | |
402 | lldpd_vlan_cleanup(&hardware->h_lport); | |
403 | lldpd_remote_cleanup(cfg, hardware, 1); | |
404 | free(hardware->h_proto_macs); | |
405 | free(hardware->h_llastframe); | |
406 | free(hardware); | |
407 | } else if (hardware->h_rchassis != NULL) { | |
408 | if (time(NULL) - hardware->h_rlastupdate > | |
409 | hardware->h_rchassis->c_ttl) { | |
410 | lldpd_remote_cleanup(cfg, hardware, 1); | |
411 | hardware->h_rx_ageout_cnt++; | |
412 | } | |
413 | } | |
414 | } | |
50a89ca7 VB |
415 | for (vif = TAILQ_FIRST(&cfg->g_vif); vif != NULL; |
416 | vif = vif_next) { | |
417 | vif_next = TAILQ_NEXT(vif, vif_entries); | |
418 | if (vif->vif_flags == 0) { | |
419 | TAILQ_REMOVE(&cfg->g_vif, vif, vif_entries); | |
420 | lldpd_iface_close(cfg, (struct lldpd_hardware*)vif); | |
421 | free(vif); | |
422 | } | |
423 | } | |
424 | } | |
425 | ||
426 | struct lldpd_vif * | |
427 | lldpd_port_add_vlan(struct lldpd *cfg, struct ifaddrs *ifa) | |
428 | { | |
429 | struct lldpd_vif *vif; | |
430 | struct lldpd_hardware *hardware; | |
431 | struct vlan_ioctl_args ifv; | |
432 | ||
433 | TAILQ_FOREACH(vif, &cfg->g_vif, vif_entries) { | |
434 | if (strcmp(vif->vif_ifname, ifa->ifa_name) == 0) | |
435 | break; | |
436 | } | |
437 | ||
438 | if (vif == NULL) { | |
439 | if ((vif = (struct lldpd_vif *) | |
440 | calloc(1, sizeof(struct lldpd_vif))) == NULL) | |
441 | return NULL; | |
442 | vif->vif_raw = -1; | |
443 | vif->vif_raw_real = -1; | |
444 | } | |
445 | strlcpy(vif->vif_ifname, ifa->ifa_name, sizeof(vif->vif_ifname)); | |
446 | vif->vif_flags = ifa->ifa_flags; | |
447 | ||
448 | if (vif->vif_raw == -1) { | |
449 | ||
450 | if (lldpd_iface_init_vlan(cfg, vif) != 0) { | |
451 | free(vif); | |
452 | return NULL; | |
453 | } | |
b5562b23 | 454 | |
50a89ca7 VB |
455 | /* Find the real interface */ |
456 | vif->vif_real = NULL; | |
457 | TAILQ_FOREACH(hardware, &cfg->g_hardware, h_entries) { | |
458 | memset(&ifv, 0, sizeof(ifv)); | |
459 | ifv.cmd = GET_VLAN_REALDEV_NAME_CMD; | |
460 | strlcpy(ifv.device1, ifa->ifa_name, sizeof(ifv.device1)); | |
461 | if ((ioctl(cfg->g_sock, SIOCGIFVLAN, &ifv) >= 0) && | |
462 | (strncmp(hardware->h_ifname, | |
463 | ifv.u.device2, | |
464 | sizeof(ifv.u.device2)) == 0)) | |
465 | vif->vif_real = hardware; | |
466 | } | |
467 | if (vif->vif_real == NULL) { | |
468 | LLOG_WARNX("unable to find real interface for %s", | |
469 | ifa->ifa_name); | |
470 | free(vif); | |
471 | return NULL; | |
472 | } | |
473 | ||
474 | TAILQ_INSERT_TAIL(&cfg->g_vif, vif, vif_entries); | |
475 | } | |
476 | ||
477 | return vif; | |
43c02e7b VB |
478 | } |
479 | ||
480 | struct lldpd_hardware * | |
481 | lldpd_port_add(struct lldpd *cfg, struct ifaddrs *ifa) | |
482 | { | |
483 | struct ifaddrs *oifap, *oifa; | |
484 | struct lldpd_hardware *hardware; | |
485 | struct lldpd_port *port; | |
486 | struct lldpd_vlan *vlan; | |
43c02e7b VB |
487 | struct vlan_ioctl_args ifv; |
488 | struct ethtool_cmd ethc; | |
489 | u_int8_t *lladdr; | |
490 | ||
491 | TAILQ_FOREACH(hardware, &cfg->g_hardware, h_entries) { | |
492 | if (strcmp(hardware->h_ifname, ifa->ifa_name) == 0) | |
493 | break; | |
494 | } | |
495 | ||
496 | if (hardware == NULL) { | |
497 | if ((hardware = (struct lldpd_hardware *) | |
498 | calloc(1, sizeof(struct lldpd_hardware))) == NULL) | |
499 | return (NULL); | |
500 | hardware->h_raw = -1; | |
501 | hardware->h_raw_real = -1; | |
502 | hardware->h_start_probe = 0; | |
503 | hardware->h_proto_macs = (u_int8_t*)calloc(cfg->g_multi+1, ETH_ALEN); | |
504 | TAILQ_INIT(&hardware->h_lport.p_vlans); | |
505 | } else { | |
506 | lldpd_vlan_cleanup(&hardware->h_lport); | |
507 | } | |
508 | ||
509 | port = &hardware->h_lport; | |
510 | hardware->h_flags = ifa->ifa_flags; | |
511 | ||
512 | strlcpy(hardware->h_ifname, ifa->ifa_name, sizeof(hardware->h_ifname)); | |
513 | lladdr = (u_int8_t*)(((struct sockaddr_ll *)ifa->ifa_addr)->sll_addr); | |
514 | memcpy(&hardware->h_lladdr, lladdr, sizeof(hardware->h_lladdr)); | |
515 | port->p_id_subtype = LLDP_PORTID_SUBTYPE_LLADDR; | |
516 | port->p_id = (char*)hardware->h_lladdr; | |
517 | port->p_id_len = sizeof(hardware->h_lladdr); | |
518 | port->p_descr = hardware->h_ifname; | |
519 | ||
520 | if (cfg->g_lchassis.c_id == NULL) { | |
521 | /* Use the first port's l2 addr as the chassis ID */ | |
522 | if ((cfg->g_lchassis.c_id = malloc(sizeof(hardware->h_lladdr))) == NULL) | |
523 | fatal(NULL); | |
524 | cfg->g_lchassis.c_id_subtype = LLDP_CHASSISID_SUBTYPE_LLADDR; | |
525 | cfg->g_lchassis.c_id_len = sizeof(hardware->h_lladdr); | |
526 | memcpy(cfg->g_lchassis.c_id, | |
527 | hardware->h_lladdr, sizeof(hardware->h_lladdr)); | |
528 | } | |
529 | ||
530 | /* Get VLANS and aggregation status */ | |
531 | if (getifaddrs(&oifap) != 0) | |
532 | fatal("lldpd_port_add: failed to get interface list"); | |
533 | for (oifa = oifap; oifa != NULL; oifa = oifa->ifa_next) { | |
534 | /* Check if we already have checked this one */ | |
535 | int skip = 0; | |
536 | TAILQ_FOREACH(vlan, &port->p_vlans, v_entries) { | |
537 | if (strcmp(vlan->v_name, oifa->ifa_name) == 0) | |
538 | skip = 1; | |
539 | } | |
540 | if (skip) continue; | |
541 | ||
542 | /* Aggregation check */ | |
543 | if (iface_is_bond_slave(cfg, hardware->h_ifname, oifa->ifa_name)) | |
544 | port->p_aggregid = if_nametoindex(oifa->ifa_name); | |
545 | ||
546 | /* VLAN check */ | |
547 | memset(&ifv, 0, sizeof(ifv)); | |
548 | ifv.cmd = GET_VLAN_REALDEV_NAME_CMD; | |
549 | strlcpy(ifv.device1, oifa->ifa_name, sizeof(ifv.device1)); | |
550 | if ((ioctl(cfg->g_sock, SIOCGIFVLAN, &ifv) >= 0) && | |
551 | ((iface_is_bond_slave(cfg, hardware->h_ifname, ifv.u.device2)) || | |
552 | (strncmp(hardware->h_ifname, ifv.u.device2, sizeof(ifv.u.device2)) == 0))) { | |
553 | if ((vlan = (struct lldpd_vlan *) | |
554 | calloc(1, sizeof(struct lldpd_vlan))) == NULL) | |
555 | continue; | |
556 | if (asprintf(&vlan->v_name, "%s", oifa->ifa_name) == -1) { | |
557 | free(vlan); | |
558 | continue; | |
559 | } | |
560 | memset(&ifv, 0, sizeof(ifv)); | |
561 | ifv.cmd = GET_VLAN_VID_CMD; | |
562 | strlcpy(ifv.device1, oifa->ifa_name, sizeof(ifv.device1)); | |
563 | if (ioctl(cfg->g_sock, SIOCGIFVLAN, &ifv) < 0) { | |
564 | /* Dunno what happened */ | |
565 | free(vlan->v_name); | |
566 | free(vlan); | |
567 | } else { | |
568 | vlan->v_vid = ifv.u.VID; | |
569 | TAILQ_INSERT_TAIL(&port->p_vlans, vlan, v_entries); | |
570 | } | |
571 | } | |
572 | } | |
573 | freeifaddrs(oifap); | |
574 | ||
575 | /* MAC/PHY */ | |
4afe659e | 576 | if (priv_ethtool(hardware->h_ifname, ðc) == 0) { |
43c02e7b VB |
577 | int j; |
578 | int advertised_ethtool_to_rfc3636[][2] = { | |
579 | {ADVERTISED_10baseT_Half, LLDP_DOT3_LINK_AUTONEG_10BASE_T}, | |
580 | {ADVERTISED_10baseT_Full, LLDP_DOT3_LINK_AUTONEG_10BASET_FD}, | |
581 | {ADVERTISED_100baseT_Half, LLDP_DOT3_LINK_AUTONEG_100BASE_TX}, | |
582 | {ADVERTISED_100baseT_Full, LLDP_DOT3_LINK_AUTONEG_100BASE_TXFD}, | |
583 | {ADVERTISED_1000baseT_Half, LLDP_DOT3_LINK_AUTONEG_1000BASE_T}, | |
584 | {ADVERTISED_1000baseT_Full, LLDP_DOT3_LINK_AUTONEG_1000BASE_TFD}, | |
585 | {ADVERTISED_10000baseT_Full, LLDP_DOT3_LINK_AUTONEG_OTHER}, | |
586 | {ADVERTISED_Pause, LLDP_DOT3_LINK_AUTONEG_FDX_PAUSE}, | |
587 | {ADVERTISED_Asym_Pause, LLDP_DOT3_LINK_AUTONEG_FDX_APAUSE}, | |
588 | {ADVERTISED_2500baseX_Full, LLDP_DOT3_LINK_AUTONEG_OTHER}, | |
589 | {0,0}}; | |
590 | ||
591 | port->p_autoneg_support = (ethc.supported & SUPPORTED_Autoneg) ? 1 : 0; | |
592 | port->p_autoneg_enabled = (ethc.autoneg == AUTONEG_DISABLE) ? 0 : 1; | |
593 | for (j=0; advertised_ethtool_to_rfc3636[j][0]; j++) { | |
594 | if (ethc.advertising & advertised_ethtool_to_rfc3636[j][0]) | |
595 | port->p_autoneg_advertised |= advertised_ethtool_to_rfc3636[j][1]; | |
596 | } | |
597 | switch (ethc.speed) { | |
598 | case SPEED_10: | |
599 | port->p_mau_type = (ethc.duplex == DUPLEX_FULL) ? \ | |
600 | LLDP_DOT3_MAU_10BASETFD : LLDP_DOT3_MAU_10BASETHD; | |
601 | if (ethc.port == PORT_BNC) port->p_mau_type = LLDP_DOT3_MAU_10BASE2; | |
602 | if (ethc.port == PORT_FIBRE) | |
603 | port->p_mau_type = (ethc.duplex == DUPLEX_FULL) ? \ | |
604 | LLDP_DOT3_MAU_10BASEFLDF : LLDP_DOT3_MAU_10BASEFLHD; | |
605 | break; | |
606 | case SPEED_100: | |
607 | port->p_mau_type = (ethc.duplex == DUPLEX_FULL) ? \ | |
608 | LLDP_DOT3_MAU_100BASETXFD : LLDP_DOT3_MAU_100BASETXHD; | |
609 | if (ethc.port == PORT_BNC) | |
610 | port->p_mau_type = (ethc.duplex == DUPLEX_FULL) ? \ | |
611 | LLDP_DOT3_MAU_100BASET2DF : LLDP_DOT3_MAU_100BASET2HD; | |
612 | if (ethc.port == PORT_FIBRE) | |
613 | port->p_mau_type = (ethc.duplex == DUPLEX_FULL) ? \ | |
614 | LLDP_DOT3_MAU_100BASEFXFD : LLDP_DOT3_MAU_100BASEFXHD; | |
615 | break; | |
616 | case SPEED_1000: | |
617 | port->p_mau_type = (ethc.duplex == DUPLEX_FULL) ? \ | |
618 | LLDP_DOT3_MAU_1000BASETFD : LLDP_DOT3_MAU_1000BASETHD; | |
619 | if (ethc.port == PORT_FIBRE) | |
620 | port->p_mau_type = (ethc.duplex == DUPLEX_FULL) ? \ | |
621 | LLDP_DOT3_MAU_1000BASEXFD : LLDP_DOT3_MAU_1000BASEXHD; | |
622 | break; | |
623 | case SPEED_10000: | |
624 | port->p_mau_type = (ethc.port == PORT_FIBRE) ? \ | |
625 | LLDP_DOT3_MAU_10GIGBASEX : LLDP_DOT3_MAU_10GIGBASER; | |
626 | break; | |
627 | } | |
628 | if (ethc.port == PORT_AUI) port->p_mau_type = LLDP_DOT3_MAU_AUI; | |
b5562b23 | 629 | } else |
28aca6a0 | 630 | LLOG_DEBUG("unable to get eth info for %s", hardware->h_ifname); |
43c02e7b VB |
631 | |
632 | if (!INTERFACE_OPENED(hardware)) { | |
633 | ||
634 | if (lldpd_iface_init(cfg, hardware) != 0) { | |
b5562b23 | 635 | LLOG_WARN("unable to initialize %s", hardware->h_ifname); |
43c02e7b | 636 | lldpd_vlan_cleanup(&hardware->h_lport); |
43c02e7b VB |
637 | free(hardware->h_proto_macs); |
638 | free(hardware); | |
639 | return (NULL); | |
640 | } | |
641 | ||
642 | TAILQ_INSERT_TAIL(&cfg->g_hardware, hardware, h_entries); | |
643 | } | |
644 | ||
645 | return (hardware); | |
646 | } | |
647 | ||
648 | int | |
649 | lldpd_guess_type(struct lldpd *cfg, char *frame, int s) | |
650 | { | |
651 | int i; | |
652 | if (s < ETH_ALEN) | |
653 | return -1; | |
654 | for (i=0; cfg->g_protocols[i].mode != 0; i++) { | |
655 | if (!cfg->g_protocols[i].enabled) | |
656 | continue; | |
657 | if (cfg->g_protocols[i].guess == NULL) { | |
658 | if (memcmp(frame, cfg->g_protocols[i].mac, ETH_ALEN) == 0) | |
659 | return cfg->g_protocols[i].mode; | |
660 | } else { | |
661 | if (cfg->g_protocols[i].guess(frame, s)) | |
662 | return cfg->g_protocols[i].mode; | |
663 | } | |
664 | } | |
665 | return -1; | |
666 | } | |
667 | ||
668 | void | |
669 | lldpd_decode(struct lldpd *cfg, char *frame, int s, | |
670 | struct lldpd_hardware *hardware, int bond) | |
671 | { | |
672 | int result = 0, i, j, candidatetonull; | |
673 | u_int8_t nullmac[ETH_ALEN] = {0,0,0,0,0,0}; | |
674 | u_int8_t broadcastmac[ETH_ALEN] = {0xff,0xff,0xff,0xff,0xff,0xff}; | |
675 | struct lldpd_chassis *chassis; | |
676 | struct lldpd_port *port; | |
677 | struct lldpd_hardware *ohardware, *firstnull = NULL, *older = NULL; | |
678 | int guess = LLDPD_MODE_LLDP; | |
679 | ||
50a89ca7 VB |
680 | /* Discard VLAN frames */ |
681 | if ((s >= sizeof(struct ieee8023)) && | |
682 | (((struct ieee8023*)frame)->size == htons(ETHERTYPE_VLAN))) | |
683 | return; | |
684 | ||
43c02e7b VB |
685 | if ((hardware->h_rlastframe != NULL) && |
686 | (hardware->h_rlastframe->size == s) && | |
687 | (memcmp(hardware->h_rlastframe->frame, frame, s) == 0)) { | |
688 | /* Already received the same frame */ | |
689 | hardware->h_rlastupdate = time(NULL); | |
690 | return; | |
691 | } | |
692 | ||
693 | if (cfg->g_multi) { | |
694 | if (hardware->h_mode == LLDPD_MODE_ANY) | |
695 | guess = lldpd_guess_type(cfg, frame, s); | |
696 | else | |
697 | guess = hardware->h_mode; | |
698 | for (i=0; cfg->g_protocols[i].mode != 0; i++) { | |
699 | if (!cfg->g_protocols[i].enabled) | |
700 | continue; | |
701 | if (cfg->g_protocols[i].mode == guess) { | |
702 | if ((result = cfg->g_protocols[i].decode(cfg, frame, | |
703 | s, hardware, &chassis, &port)) == -1) | |
704 | return; | |
705 | break; | |
706 | } | |
707 | } | |
708 | if (cfg->g_protocols[i].mode == 0) { | |
709 | LLOG_INFO("unable to guess frame type"); | |
710 | return; | |
711 | } | |
712 | } else if (cfg->g_protocols[0].decode(cfg, frame, s, hardware, | |
713 | &chassis, &port) == -1) | |
714 | /* Nothing has been received */ | |
715 | return; | |
716 | ||
717 | if (bond) { | |
718 | /* Eh, wait ! The frame we just received was for a bonding | |
719 | * device. We need to attach it to a real device. What is the | |
720 | * best candidate? Drum rolling... */ | |
721 | TAILQ_FOREACH(ohardware, &cfg->g_hardware, h_entries) { | |
722 | if (ohardware->h_master == hardware->h_master) { | |
723 | /* Same bond */ | |
724 | if (ohardware->h_rchassis == NULL) { | |
725 | candidatetonull = 1; | |
726 | if (cfg->g_multi && | |
727 | (ohardware->h_mode == LLDPD_MODE_ANY)) { | |
728 | for (i=j=0; | |
729 | cfg->g_protocols[i].mode != 0; | |
730 | i++) { | |
731 | if (!cfg->g_protocols[i].enabled) | |
732 | continue; | |
733 | if ((cfg->g_protocols[i].mode == guess) && | |
734 | (memcmp(frame + ETH_ALEN, | |
735 | ohardware->h_proto_macs + ETH_ALEN*j, | |
736 | ETH_ALEN) == 0)) { | |
737 | hardware = ohardware; | |
738 | bond = 0; | |
739 | break; | |
740 | } | |
741 | j++; | |
742 | } | |
743 | if (!bond) break; | |
744 | if (firstnull != NULL) { | |
745 | for (i=j=0; | |
746 | cfg->g_protocols[i].mode != 0; | |
747 | i++) { | |
748 | if (!cfg->g_protocols[i].enabled) | |
749 | continue; | |
750 | if ((cfg->g_protocols[i].mode == guess) && | |
751 | (memcmp(nullmac, | |
752 | ohardware->h_proto_macs + | |
753 | ETH_ALEN*j, | |
754 | ETH_ALEN) != 0)) { | |
755 | /* We need to | |
756 | * find a better | |
757 | * candidate */ | |
758 | candidatetonull = 0; | |
759 | break; | |
760 | } | |
761 | j++; | |
762 | } | |
763 | } | |
764 | } | |
765 | /* Ok, this is the first candidate if we | |
766 | * don't find a matching chassis/port */ | |
767 | if (candidatetonull) firstnull = ohardware; | |
768 | continue; | |
769 | } | |
770 | if ((older == NULL) || | |
771 | (older->h_rlastupdate > ohardware->h_rlastupdate)) | |
772 | /* If there is no matching chassis/port | |
773 | * and no free hardware, we will use | |
774 | * this one. */ | |
775 | older = ohardware; | |
776 | if ((chassis->c_id_subtype != | |
777 | ohardware->h_rchassis->c_id_subtype) || | |
778 | (chassis->c_id_len != ohardware->h_rchassis->c_id_len) || | |
779 | (memcmp(chassis->c_id, ohardware->h_rchassis->c_id, | |
780 | chassis->c_id_len) != 0) || | |
781 | (port->p_id_subtype != ohardware->h_rport->p_id_subtype) || | |
782 | (port->p_id_len != ohardware->h_rport->p_id_len) || | |
783 | (memcmp(port->p_id, ohardware->h_rport->p_id, | |
784 | port->p_id_len) != 0)) | |
785 | continue; | |
786 | /* We got a match! */ | |
787 | hardware = ohardware; /* We switch hardware */ | |
788 | bond = 0; | |
789 | break; | |
790 | } | |
791 | } | |
792 | if (bond) { | |
793 | /* No match found */ | |
794 | if (firstnull != NULL) | |
795 | hardware = firstnull; | |
796 | else hardware = older; | |
797 | } | |
798 | } | |
799 | ||
800 | if (cfg->g_multi && | |
801 | (hardware->h_mode == LLDPD_MODE_ANY)) { | |
802 | u_int8_t *mac; | |
803 | char *modename; | |
804 | int filter; | |
805 | ||
806 | for (i=j=0; cfg->g_protocols[i].mode != 0; i++) { | |
807 | if (!cfg->g_protocols[i].enabled) | |
808 | continue; | |
809 | if (cfg->g_protocols[i].mode == guess) { | |
810 | mac = hardware->h_proto_macs + ETH_ALEN*j; | |
811 | modename = cfg->g_protocols[i].name; | |
812 | filter = cfg->g_protocols[i].mode; | |
813 | break; | |
814 | } | |
815 | j++; | |
816 | } | |
817 | if (cfg->g_protocols[i].mode == 0) { | |
818 | LLOG_WARNX("should not be there"); | |
819 | goto cleanup; | |
820 | } | |
821 | ||
822 | if (hardware->h_start_probe == 0) | |
823 | hardware->h_start_probe = time(NULL) - 1; | |
824 | /* Handle switching respecting probe time */ | |
825 | if ((memcmp(mac, frame + ETH_ALEN, ETH_ALEN) == 0) && | |
826 | ((time(NULL) - hardware->h_start_probe) > cfg->g_probe_time) && | |
827 | /* Don't switch to this protocol if not LLDP and LLDP is | |
828 | * a valid candidate */ | |
829 | ((filter == LLDPD_MODE_LLDP) || | |
830 | (memcmp(hardware->h_proto_macs, | |
831 | broadcastmac, ETH_ALEN) == 0) || | |
832 | (memcmp(hardware->h_proto_macs, | |
833 | nullmac, ETH_ALEN) == 0))) { | |
834 | LLOG_INFO("switching to %s on port %s", modename, | |
835 | hardware->h_ifname); | |
836 | hardware->h_mode = guess; | |
837 | lldpd_iface_switchto(cfg, filter, hardware); | |
838 | } else { | |
839 | /* Wait twice probe time to be able to receive packets of all kind */ | |
840 | if ((time(NULL) - hardware->h_start_probe) > cfg->g_probe_time * 2) { | |
841 | LLOG_DEBUG("probe expired on %s, retry", hardware->h_ifname); | |
842 | hardware->h_start_probe = 0; | |
843 | memset(hardware->h_proto_macs, 0, ETH_ALEN*(cfg->g_multi+1)); | |
844 | goto cleanup; | |
845 | } | |
846 | if (memcmp(mac, broadcastmac, ETH_ALEN) == 0) | |
847 | goto cleanup; | |
848 | LLOG_INFO("received a %s frame on %s but wait for %d sec", | |
849 | modename, hardware->h_ifname, cfg->g_probe_time - time(NULL) + | |
850 | hardware->h_start_probe); | |
851 | if (memcmp(mac, frame + ETH_ALEN, ETH_ALEN) == 0) | |
852 | goto cleanup; | |
853 | if (memcmp(mac, nullmac, ETH_ALEN) == 0) { | |
854 | memcpy(mac, frame + ETH_ALEN, ETH_ALEN); | |
855 | goto cleanup; | |
856 | } | |
857 | LLOG_INFO("several MAC for %s on %s, discarding %s for this interface", | |
858 | modename, hardware->h_ifname, modename); | |
859 | memcpy(mac, broadcastmac, ETH_ALEN); | |
860 | goto cleanup; | |
861 | } | |
862 | } | |
863 | ||
864 | result = 0; | |
865 | if ((hardware->h_rchassis == NULL) || | |
866 | (chassis->c_id_subtype != hardware->h_rchassis->c_id_subtype) || | |
867 | (chassis->c_id_len != hardware->h_rchassis->c_id_len) || | |
868 | (memcmp(chassis->c_id, hardware->h_rchassis->c_id, | |
869 | chassis->c_id_len) != 0)) | |
870 | result = 1; | |
871 | ||
872 | /* We have our new frame */ | |
873 | lldpd_remote_cleanup(cfg, hardware, 0); | |
874 | hardware->h_rport = port; | |
875 | hardware->h_rchassis = chassis; | |
876 | hardware->h_rlastchange = hardware->h_rlastupdate = time(NULL); | |
877 | ||
878 | /* We remember this frame */ | |
879 | free(hardware->h_rlastframe); | |
880 | if ((hardware->h_rlastframe = (struct lldpd_frame *)malloc(s + | |
881 | sizeof(int))) != NULL) { | |
882 | hardware->h_rlastframe->size = s; | |
883 | memcpy(hardware->h_rlastframe->frame, frame, s); | |
884 | } | |
885 | ||
886 | if (result) { | |
887 | /* This is a new remote system */ | |
888 | LLOG_DEBUG("we discovered a new remote system on %s", | |
889 | hardware->h_ifname); | |
890 | /* Do we already know this remote system? */ | |
891 | TAILQ_FOREACH(ohardware, &cfg->g_hardware, h_entries) { | |
892 | if ((ohardware->h_ifname != hardware->h_ifname) && | |
893 | (ohardware->h_rchassis != NULL) && | |
894 | (ohardware->h_rchassis->c_id_subtype == | |
895 | chassis->c_id_subtype) && | |
896 | (ohardware->h_rchassis->c_id_len == | |
897 | chassis->c_id_len) && | |
898 | (memcmp(ohardware->h_rchassis->c_id, | |
899 | chassis->c_id, chassis->c_id_len) == 0)) { | |
900 | LLOG_DEBUG("but it was already on %s", | |
901 | ohardware->h_ifname); | |
902 | hardware->h_rid = ohardware->h_rid; | |
903 | return; | |
904 | } | |
905 | } | |
906 | hardware->h_rid = ++cfg->g_lastrid; | |
907 | } | |
908 | return; | |
909 | ||
910 | cleanup: | |
911 | lldpd_chassis_cleanup(chassis); | |
912 | lldpd_port_cleanup(port); | |
913 | return; | |
914 | } | |
915 | ||
43c02e7b VB |
916 | void |
917 | lldpd_recv_all(struct lldpd *cfg) | |
918 | { | |
919 | struct lldpd_hardware *hardware; | |
50a89ca7 | 920 | struct lldpd_vif *vif; |
43c02e7b VB |
921 | struct lldpd_client *client, *client_next; |
922 | fd_set rfds; | |
923 | struct timeval tv; | |
924 | struct sockaddr_ll from; | |
925 | socklen_t fromlen; | |
926 | int onreal; | |
927 | #ifdef USE_SNMP | |
928 | int fakeblock = 0; | |
929 | struct timeval *tvp = &tv; | |
930 | #endif | |
931 | int rc, nfds, n, bond; | |
932 | char *buffer; | |
933 | ||
934 | do { | |
935 | tv.tv_sec = cfg->g_delay - (time(NULL) - cfg->g_lastsent); | |
936 | if (tv.tv_sec < 0) | |
937 | tv.tv_sec = LLDPD_TX_DELAY; | |
938 | if (tv.tv_sec >= cfg->g_delay) | |
939 | tv.tv_sec = cfg->g_delay; | |
940 | tv.tv_usec = 0; | |
941 | ||
942 | FD_ZERO(&rfds); | |
943 | nfds = -1; | |
944 | ||
945 | TAILQ_FOREACH(hardware, &cfg->g_hardware, h_entries) { | |
946 | /* Ignore if interface is down */ | |
947 | if ((hardware->h_flags & IFF_UP) == 0) | |
948 | continue; | |
949 | FD_SET(hardware->h_raw, &rfds); | |
950 | if (nfds < hardware->h_raw) | |
951 | nfds = hardware->h_raw; | |
952 | /* Listen to real interface too. In 2.6.27, we can | |
953 | * receive packets if this is the slave interface. */ | |
954 | if (hardware->h_raw_real > 0) { | |
955 | FD_SET(hardware->h_raw_real, &rfds); | |
956 | if (nfds < hardware->h_raw_real) | |
957 | nfds = hardware->h_raw_real; | |
958 | } | |
959 | } | |
50a89ca7 VB |
960 | TAILQ_FOREACH(vif, &cfg->g_vif, vif_entries) { |
961 | if ((vif->vif_flags & IFF_UP) == 0) | |
962 | continue; | |
963 | FD_SET(vif->vif_raw, &rfds); | |
964 | if (nfds < vif->vif_raw) | |
965 | nfds = vif->vif_raw; | |
966 | } | |
43c02e7b VB |
967 | TAILQ_FOREACH(client, &cfg->g_clients, next) { |
968 | FD_SET(client->fd, &rfds); | |
969 | if (nfds < client->fd) | |
970 | nfds = client->fd; | |
971 | } | |
972 | FD_SET(cfg->g_ctl, &rfds); | |
973 | if (nfds < cfg->g_ctl) | |
974 | nfds = cfg->g_ctl; | |
975 | ||
976 | #ifdef USE_SNMP | |
977 | if (cfg->g_snmp) | |
978 | snmp_select_info(&nfds, &rfds, tvp, &fakeblock); | |
979 | #endif /* USE_SNMP */ | |
980 | if (nfds == -1) { | |
981 | sleep(cfg->g_delay); | |
982 | return; | |
983 | } | |
984 | ||
985 | rc = select(nfds + 1, &rfds, NULL, NULL, &tv); | |
986 | if (rc == -1) { | |
987 | if (errno == EINTR) | |
988 | continue; | |
989 | LLOG_WARN("failure on select"); | |
990 | break; | |
991 | } | |
992 | #ifdef USE_SNMP | |
993 | if (cfg->g_snmp) { | |
994 | if (rc > 0) | |
995 | snmp_read(&rfds); | |
996 | else if (rc == 0) | |
997 | snmp_timeout(); | |
998 | } | |
999 | #endif /* USE_SNMP */ | |
50a89ca7 VB |
1000 | TAILQ_FOREACH(vif, &cfg->g_vif, vif_entries) { |
1001 | if (!FD_ISSET(vif->vif_raw, &rfds)) | |
1002 | continue; | |
1003 | if ((buffer = (char *)malloc( | |
1004 | vif->vif_mtu)) == NULL) { | |
1005 | LLOG_WARN("failed to alloc reception buffer"); | |
1006 | continue; | |
1007 | } | |
1008 | fromlen = sizeof(from); | |
1009 | if ((n = recvfrom(vif->vif_raw, | |
1010 | buffer, | |
1011 | vif->vif_mtu, 0, | |
1012 | (struct sockaddr *)&from, | |
1013 | &fromlen)) == -1) { | |
1014 | LLOG_WARN("error while receiving frame on vlan %s", | |
1015 | vif->vif_ifname); | |
1016 | vif->vif_real->h_rx_discarded_cnt++; | |
1017 | free(buffer); | |
1018 | continue; | |
1019 | } | |
1020 | if (from.sll_pkttype == PACKET_OUTGOING) { | |
1021 | free(buffer); | |
1022 | continue; | |
1023 | } | |
1024 | if (!((cfg->g_multi) && | |
1025 | (vif->vif_real->h_mode != LLDPD_MODE_ANY) && | |
1026 | (lldpd_guess_type(cfg, buffer, n) != | |
1027 | vif->vif_real->h_mode))) { | |
1028 | vif->vif_real->h_rx_cnt++; | |
1029 | lldpd_decode(cfg, buffer, n, vif->vif_real, 0); | |
1030 | } | |
1031 | ||
1032 | free(buffer); | |
1033 | } | |
43c02e7b VB |
1034 | TAILQ_FOREACH(hardware, &cfg->g_hardware, h_entries) { |
1035 | /* We could have received something on _real_ | |
1036 | * interface. However, even in this case, this could be | |
1037 | * just an outgoing packet. We will try to handle both | |
1038 | * cases, but maybe not in the same select. */ | |
1039 | onreal = ((hardware->h_raw_real > 0) && | |
1040 | (FD_ISSET(hardware->h_raw_real, &rfds))); | |
1041 | if (onreal || (FD_ISSET(hardware->h_raw, &rfds))) { | |
1042 | if ((buffer = (char *)malloc( | |
1043 | hardware->h_mtu)) == NULL) { | |
1044 | LLOG_WARN("failed to alloc reception buffer"); | |
1045 | continue; | |
1046 | } | |
1047 | fromlen = sizeof(from); | |
1048 | if ((n = recvfrom( | |
1049 | onreal?hardware->h_raw_real:hardware->h_raw, | |
1050 | buffer, | |
1051 | hardware->h_mtu, 0, | |
1052 | (struct sockaddr *)&from, | |
1053 | &fromlen)) == -1) { | |
1054 | LLOG_WARN("error while receiving frame on %s", | |
1055 | hardware->h_ifname); | |
1056 | hardware->h_rx_discarded_cnt++; | |
1057 | free(buffer); | |
1058 | continue; | |
1059 | } | |
1060 | if (from.sll_pkttype == PACKET_OUTGOING) { | |
1061 | free(buffer); | |
1062 | continue; | |
1063 | } | |
1064 | bond = 0; | |
1065 | /* If received on real interface, we act like if | |
1066 | * this is not a bond! */ | |
1067 | if (!onreal && (hardware->h_raw_real > 0)) { | |
1068 | /* Bonding. Is it for the correct | |
1069 | * physical interface ? */ | |
1070 | if (from.sll_ifindex == hardware->h_master) { | |
1071 | /* It seems that we don't know from | |
1072 | which physical interface it comes | |
1073 | (kernel < 2.6.24 ?) */ | |
1074 | bond = 1; | |
1075 | } else if (from.sll_ifindex != | |
1076 | if_nametoindex(hardware->h_ifname)) { | |
1077 | free(buffer); | |
1078 | continue; | |
1079 | } | |
1080 | } | |
1081 | hardware->h_rx_cnt++; | |
1082 | lldpd_decode(cfg, buffer, n, hardware, bond); | |
1083 | free(buffer); | |
1084 | } | |
1085 | ||
1086 | } | |
1087 | if (FD_ISSET(cfg->g_ctl, &rfds)) { | |
1088 | if (ctl_accept(cfg, cfg->g_ctl) == -1) | |
1089 | LLOG_WARN("unable to accept new client"); | |
1090 | } | |
1091 | for (client = TAILQ_FIRST(&cfg->g_clients); | |
1092 | client != NULL; | |
1093 | client = client_next) { | |
1094 | client_next = TAILQ_NEXT(client, next); | |
1095 | if (FD_ISSET(client->fd, &rfds)) { | |
1096 | /* Got a message */ | |
1097 | if ((buffer = (char *)malloc(MAX_HMSGSIZE)) == | |
1098 | NULL) { | |
1099 | LLOG_WARN("failed to alloc reception buffer"); | |
1100 | continue; | |
1101 | } | |
1102 | if ((n = recv(client->fd, buffer, | |
1103 | MAX_HMSGSIZE, 0)) == -1) { | |
1104 | LLOG_WARN("error while receiving message"); | |
1105 | free(buffer); | |
1106 | continue; | |
1107 | } | |
1108 | if (n > 0) | |
a552a72e | 1109 | client_handle_client(cfg, client, buffer, n); |
43c02e7b VB |
1110 | else |
1111 | ctl_close(cfg, client->fd); /* Will use TAILQ_REMOVE ! */ | |
1112 | free(buffer); | |
1113 | } | |
1114 | } | |
1115 | ||
1116 | #ifdef USE_SNMP | |
1117 | if (cfg->g_snmp) { | |
1118 | run_alarms(); | |
1119 | netsnmp_check_outstanding_agent_requests(); | |
1120 | } | |
1121 | #endif /* USE_SNMP */ | |
1122 | } while ((rc != 0) || (time(NULL) - cfg->g_lastsent < cfg->g_delay)); | |
1123 | } | |
1124 | ||
1125 | void | |
1126 | lldpd_send_all(struct lldpd *cfg) | |
1127 | { | |
1128 | struct lldpd_hardware *hardware; | |
1129 | int i; | |
1130 | cfg->g_lastsent = time(NULL); | |
1131 | TAILQ_FOREACH(hardware, &cfg->g_hardware, h_entries) { | |
1132 | /* Ignore if interface is down */ | |
1133 | if ((hardware->h_flags & IFF_UP) == 0) | |
1134 | continue; | |
1135 | ||
1136 | for (i=0; cfg->g_protocols[i].mode != 0; i++) { | |
1137 | if (!cfg->g_protocols[i].enabled) | |
1138 | continue; | |
1139 | if ((hardware->h_mode == cfg->g_protocols[i].mode) || | |
1140 | (cfg->g_protocols[i].mode == LLDPD_MODE_LLDP)) | |
1141 | cfg->g_protocols[i].send(cfg, &cfg->g_lchassis, hardware); | |
1142 | } | |
1143 | } | |
1144 | } | |
1145 | ||
1146 | void | |
1147 | lldpd_loop(struct lldpd *cfg) | |
1148 | { | |
1149 | struct ifaddrs *ifap, *ifa; | |
1150 | struct sockaddr_ll *sdl; | |
1151 | struct lldpd_hardware *hardware; | |
50a89ca7 | 1152 | struct lldpd_vif *vif; |
43c02e7b VB |
1153 | int f; |
1154 | char status; | |
1155 | struct utsname *un; | |
b5562b23 | 1156 | char *hp; |
43c02e7b VB |
1157 | |
1158 | /* Set system name and description */ | |
1159 | if ((un = (struct utsname*)malloc(sizeof(struct utsname))) == NULL) | |
1160 | fatal(NULL); | |
1161 | if (uname(un) != 0) | |
1162 | fatal("failed to get system information"); | |
b5562b23 | 1163 | if ((hp = priv_gethostbyname()) == NULL) |
43c02e7b VB |
1164 | fatal("failed to get system name"); |
1165 | free(cfg->g_lchassis.c_name); | |
1166 | free(cfg->g_lchassis.c_descr); | |
1167 | if (asprintf(&cfg->g_lchassis.c_name, "%s", | |
b5562b23 | 1168 | hp) == -1) |
43c02e7b VB |
1169 | fatal("failed to set system name"); |
1170 | if (asprintf(&cfg->g_lchassis.c_descr, "%s %s %s %s", | |
1171 | un->sysname, un->release, un->version, un->machine) == -1) | |
1172 | fatal("failed to set system description"); | |
1173 | free(un); | |
1174 | ||
1175 | /* Check forwarding */ | |
1176 | cfg->g_lchassis.c_cap_enabled = 0; | |
b5562b23 | 1177 | if ((f = priv_open("/proc/sys/net/ipv4/ip_forward")) >= 0) { |
4afe659e | 1178 | if ((read(f, &status, 1) == 1) && (status == '1')) { |
43c02e7b | 1179 | cfg->g_lchassis.c_cap_enabled = LLDP_CAP_ROUTER; |
4afe659e | 1180 | } |
43c02e7b VB |
1181 | close(f); |
1182 | } | |
1183 | ||
1184 | TAILQ_FOREACH(hardware, &cfg->g_hardware, h_entries) | |
1185 | hardware->h_flags = 0; | |
50a89ca7 VB |
1186 | TAILQ_FOREACH(vif, &cfg->g_vif, vif_entries) |
1187 | vif->vif_flags = 0; | |
43c02e7b VB |
1188 | |
1189 | if (getifaddrs(&ifap) != 0) | |
1190 | fatal("lldpd_loop: failed to get interface list"); | |
1191 | ||
1192 | cfg->g_lchassis.c_mgmt.s_addr = INADDR_ANY; | |
1193 | for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) { | |
1194 | if (cfg->g_lchassis.c_mgmt.s_addr == INADDR_ANY) | |
1195 | /* Get management address, if available */ | |
1196 | if ((ifa->ifa_addr != NULL) && | |
1197 | (ifa->ifa_addr->sa_family == AF_INET)) { | |
1198 | struct sockaddr_in *sa; | |
1199 | sa = (struct sockaddr_in *)ifa->ifa_addr; | |
1200 | if ((ntohl(*(u_int32_t*)&sa->sin_addr) != INADDR_LOOPBACK) && | |
1201 | (cfg->g_mgmt_pattern == NULL)) { | |
1202 | memcpy(&cfg->g_lchassis.c_mgmt, | |
1203 | &sa->sin_addr, | |
1204 | sizeof(struct in_addr)); | |
1205 | cfg->g_lchassis.c_mgmt_if = if_nametoindex(ifa->ifa_name); | |
1206 | } | |
1207 | else if (cfg->g_mgmt_pattern != NULL) { | |
1208 | char *ip; | |
1209 | ip = inet_ntoa(sa->sin_addr); | |
1210 | if (fnmatch(cfg->g_mgmt_pattern, | |
1211 | ip, 0) == 0) { | |
1212 | memcpy(&cfg->g_lchassis.c_mgmt, | |
1213 | &sa->sin_addr, | |
1214 | sizeof(struct in_addr)); | |
1215 | cfg->g_lchassis.c_mgmt_if = | |
1216 | if_nametoindex(ifa->ifa_name); | |
1217 | } | |
1218 | } | |
1219 | } | |
1220 | ||
a5e5458f VB |
1221 | if (ifa->ifa_addr == NULL || |
1222 | ifa->ifa_addr->sa_family != PF_PACKET) | |
1223 | continue; | |
1224 | ||
99f85c00 VB |
1225 | sdl = (struct sockaddr_ll *)ifa->ifa_addr; |
1226 | if (sdl->sll_hatype != ARPHRD_ETHER || !sdl->sll_halen) | |
1227 | continue; | |
1228 | ||
43c02e7b VB |
1229 | if (iface_is_bridge(cfg, ifa->ifa_name)) { |
1230 | cfg->g_lchassis.c_cap_enabled |= LLDP_CAP_BRIDGE; | |
1231 | continue; | |
1232 | } | |
1233 | ||
50a89ca7 | 1234 | if ((iface_is_vlan(cfg, ifa->ifa_name)) || |
43c02e7b VB |
1235 | (iface_is_bond(cfg, ifa->ifa_name))) |
1236 | continue; | |
1237 | ||
43c02e7b VB |
1238 | if (!(ifa->ifa_flags & IFF_MULTICAST)) |
1239 | continue; | |
1240 | ||
43c02e7b VB |
1241 | if (iface_is_wireless(cfg, ifa->ifa_name)) |
1242 | cfg->g_lchassis.c_cap_enabled |= LLDP_CAP_WLAN; | |
1243 | ||
43c02e7b VB |
1244 | if (lldpd_port_add(cfg, ifa) == NULL) |
1245 | LLOG_WARNX("failed to allocate port %s, skip it", | |
1246 | ifa->ifa_name); | |
1247 | } | |
1248 | ||
50a89ca7 VB |
1249 | /* Handle VLAN */ |
1250 | if (cfg->g_listen_vlans) { | |
1251 | for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) { | |
1252 | if ((iface_is_vlan(cfg, ifa->ifa_name)) && | |
1253 | (lldpd_port_add_vlan(cfg, ifa) == NULL)) { | |
1254 | LLOG_WARNX("unable to allocate vlan %s, skip it", | |
1255 | ifa->ifa_name); | |
1256 | } | |
1257 | } | |
1258 | } | |
1259 | ||
43c02e7b VB |
1260 | freeifaddrs(ifap); |
1261 | ||
1262 | lldpd_cleanup(cfg); | |
1263 | ||
1264 | lldpd_send_all(cfg); | |
1265 | lldpd_recv_all(cfg); | |
1266 | } | |
1267 | ||
43c02e7b VB |
1268 | void |
1269 | lldpd_shutdown(int sig) | |
1270 | { | |
1271 | LLOG_INFO("signal received, exiting"); | |
1272 | exit(0); | |
1273 | } | |
1274 | ||
1275 | /* For signal handling */ | |
1276 | struct lldpd *gcfg = NULL; | |
1277 | ||
1278 | void | |
1279 | lldpd_exit() | |
1280 | { | |
1281 | struct lldpd_hardware *hardware; | |
50a89ca7 | 1282 | struct lldpd_vif *vif; |
b5562b23 VB |
1283 | close(gcfg->g_ctl); |
1284 | priv_ctl_cleanup(); | |
43c02e7b VB |
1285 | TAILQ_FOREACH(hardware, &gcfg->g_hardware, h_entries) { |
1286 | if (INTERFACE_OPENED(hardware)) | |
1287 | lldpd_iface_close(gcfg, hardware); | |
1288 | } | |
50a89ca7 VB |
1289 | TAILQ_FOREACH(vif, &gcfg->g_vif, vif_entries) { |
1290 | if (vif->vif_raw != -1) | |
1291 | lldpd_iface_close(gcfg, (struct lldpd_hardware*)vif); | |
1292 | } | |
43c02e7b VB |
1293 | #ifdef USE_SNMP |
1294 | if (gcfg->g_snmp) | |
1295 | agent_shutdown(); | |
1296 | #endif /* USE_SNMP */ | |
1297 | } | |
1298 | ||
1299 | int | |
1300 | main(int argc, char *argv[]) | |
1301 | { | |
1302 | struct lldpd *cfg; | |
1303 | int ch, snmp = 0, debug = 0; | |
1304 | char *mgmtp = NULL; | |
766f32b3 VB |
1305 | char *popt, opts[] = "vdxm:p:@ "; |
1306 | int probe = 0, i, found, vlan = 0; | |
43c02e7b VB |
1307 | |
1308 | saved_argv = argv; | |
1309 | ||
1310 | /* | |
1311 | * Get and parse command line options | |
1312 | */ | |
1313 | popt = index(opts, '@'); | |
1314 | for (i=0; protos[i].mode != 0; i++) { | |
1315 | if (protos[i].enabled == 1) continue; | |
1316 | *(popt++) = protos[i].arg; | |
1317 | } | |
1318 | *popt = '\0'; | |
1319 | while ((ch = getopt(argc, argv, opts)) != -1) { | |
1320 | switch (ch) { | |
766f32b3 VB |
1321 | case 'v': |
1322 | vlan = 1; | |
1323 | break; | |
43c02e7b VB |
1324 | case 'd': |
1325 | debug++; | |
1326 | break; | |
1327 | case 'm': | |
1328 | mgmtp = optarg; | |
1329 | break; | |
1330 | case 'p': | |
1331 | probe = atoi(optarg); | |
1332 | break; | |
1333 | case 'x': | |
1334 | snmp = 1; | |
1335 | break; | |
1336 | default: | |
1337 | found = 0; | |
1338 | for (i=0; protos[i].mode != 0; i++) { | |
1339 | if (protos[i].enabled) continue; | |
1340 | if (ch == protos[i].arg) { | |
1341 | protos[i].enabled = 1; | |
1342 | found = 1; | |
1343 | } | |
1344 | } | |
1345 | if (!found) | |
1346 | usage(); | |
1347 | } | |
1348 | } | |
1349 | ||
1350 | log_init(debug); | |
a2993d83 | 1351 | |
eac2f38a VB |
1352 | if (!debug) { |
1353 | int pid; | |
1354 | char *spid; | |
1355 | if (daemon(0, 0) != 0) | |
1356 | fatal("failed to detach daemon"); | |
1357 | if ((pid = open(LLDPD_PID_FILE, | |
1358 | O_TRUNC | O_CREAT | O_WRONLY)) == -1) | |
1359 | fatal("unable to open pid file " LLDPD_PID_FILE); | |
1360 | if (asprintf(&spid, "%d\n", getpid()) == -1) | |
1361 | fatal("unable to create pid file " LLDPD_PID_FILE); | |
1362 | if (write(pid, spid, strlen(spid)) == -1) | |
1363 | fatal("unable to write pid file " LLDPD_PID_FILE); | |
1364 | free(spid); | |
1365 | close(pid); | |
1366 | } | |
1367 | ||
a2993d83 | 1368 | priv_init(PRIVSEP_CHROOT); |
43c02e7b VB |
1369 | |
1370 | if (probe == 0) probe = LLDPD_TTL; | |
1371 | ||
1372 | if ((cfg = (struct lldpd *) | |
1373 | calloc(1, sizeof(struct lldpd))) == NULL) | |
1374 | fatal(NULL); | |
1375 | ||
766f32b3 VB |
1376 | cfg->g_mgmt_pattern = mgmtp; |
1377 | cfg->g_listen_vlans = vlan; | |
43c02e7b VB |
1378 | |
1379 | /* Get ioctl socket */ | |
1380 | if ((cfg->g_sock = socket(AF_INET, SOCK_DGRAM, 0)) == -1) | |
1381 | fatal("failed to get ioctl socket"); | |
1382 | cfg->g_delay = LLDPD_TX_DELAY; | |
1383 | ||
1384 | /* Set system capabilities */ | |
1385 | cfg->g_lchassis.c_cap_available = LLDP_CAP_BRIDGE | LLDP_CAP_WLAN | | |
1386 | LLDP_CAP_ROUTER; | |
1387 | ||
1388 | /* Set TTL */ | |
1389 | cfg->g_lchassis.c_ttl = LLDPD_TTL; | |
1390 | ||
1391 | cfg->g_protocols = protos; | |
1392 | cfg->g_probe_time = probe; | |
1393 | for (i=0; protos[i].mode != 0; i++) | |
1394 | if (protos[i].enabled) { | |
1395 | cfg->g_multi++; | |
1396 | LLOG_INFO("protocol %s enabled", protos[i].name); | |
1397 | } else | |
1398 | LLOG_INFO("protocol %s disabled", protos[i].name); | |
1399 | cfg->g_multi--; | |
1400 | ||
1401 | TAILQ_INIT(&cfg->g_hardware); | |
50a89ca7 | 1402 | TAILQ_INIT(&cfg->g_vif); |
43c02e7b VB |
1403 | |
1404 | #ifdef USE_SNMP | |
1405 | if (snmp) { | |
1406 | cfg->g_snmp = 1; | |
1407 | agent_init(cfg, debug); | |
1408 | } | |
1409 | #endif /* USE_SNMP */ | |
1410 | ||
1411 | /* Create socket */ | |
b5562b23 VB |
1412 | if ((cfg->g_ctl = priv_ctl_create(cfg)) == -1) |
1413 | fatalx("unable to create control socket " LLDPD_CTL_SOCKET); | |
1414 | TAILQ_INIT(&cfg->g_clients); | |
43c02e7b | 1415 | |
43c02e7b VB |
1416 | gcfg = cfg; |
1417 | if (atexit(lldpd_exit) != 0) { | |
b5562b23 VB |
1418 | close(cfg->g_ctl); |
1419 | priv_ctl_cleanup(); | |
43c02e7b VB |
1420 | fatal("unable to set exit function"); |
1421 | } | |
43c02e7b VB |
1422 | |
1423 | /* Signal handling */ | |
b5562b23 | 1424 | signal(SIGHUP, lldpd_shutdown); |
43c02e7b VB |
1425 | signal(SIGINT, lldpd_shutdown); |
1426 | signal(SIGTERM, lldpd_shutdown); | |
1427 | ||
1428 | for (;;) | |
1429 | lldpd_loop(cfg); | |
1430 | ||
1431 | return (0); | |
1432 | } |