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Commit | Line | Data |
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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> | |
43c02e7b | 25 | #include <time.h> |
a2993d83 | 26 | #include <libgen.h> |
43c02e7b VB |
27 | #include <sys/utsname.h> |
28 | #include <sys/types.h> | |
29 | #include <sys/socket.h> | |
30 | #include <sys/select.h> | |
31 | #include <sys/time.h> | |
32 | #include <sys/ioctl.h> | |
33 | #include <arpa/inet.h> | |
43c02e7b | 34 | #include <net/if_arp.h> |
43c02e7b | 35 | |
bc598c23 VB |
36 | #if LLDPD_FD_SETSIZE != FD_SETSIZE |
37 | # warning "FD_SETSIZE is set to an inconsistent value." | |
38 | #endif | |
39 | ||
43c02e7b VB |
40 | #ifdef USE_SNMP |
41 | #include <net-snmp/net-snmp-config.h> | |
42 | #include <net-snmp/net-snmp-includes.h> | |
43 | #include <net-snmp/agent/net-snmp-agent-includes.h> | |
44 | #include <net-snmp/agent/snmp_vars.h> | |
45 | #endif /* USE_SNMP */ | |
46 | ||
8888d191 | 47 | static void usage(void); |
43c02e7b | 48 | |
8888d191 | 49 | static struct protocol protos[] = |
43c02e7b | 50 | { |
0c877af0 | 51 | { LLDPD_MODE_LLDP, 1, "LLDP", 'l', lldp_send, lldp_decode, NULL, |
f2dcb180 | 52 | LLDP_MULTICAST_ADDR }, |
4bad1937 | 53 | #ifdef ENABLE_CDP |
43c02e7b | 54 | { LLDPD_MODE_CDPV1, 0, "CDPv1", 'c', cdpv1_send, cdp_decode, cdpv1_guess, |
f2dcb180 | 55 | CDP_MULTICAST_ADDR }, |
43c02e7b | 56 | { LLDPD_MODE_CDPV2, 0, "CDPv2", 'c', cdpv2_send, cdp_decode, cdpv2_guess, |
f2dcb180 | 57 | CDP_MULTICAST_ADDR }, |
4bad1937 VB |
58 | #endif |
59 | #ifdef ENABLE_SONMP | |
43c02e7b | 60 | { LLDPD_MODE_SONMP, 0, "SONMP", 's', sonmp_send, sonmp_decode, NULL, |
f2dcb180 | 61 | SONMP_MULTICAST_ADDR }, |
4bad1937 VB |
62 | #endif |
63 | #ifdef ENABLE_EDP | |
43c02e7b | 64 | { LLDPD_MODE_EDP, 0, "EDP", 'e', edp_send, edp_decode, NULL, |
f2dcb180 | 65 | EDP_MULTICAST_ADDR }, |
4bad1937 VB |
66 | #endif |
67 | #ifdef ENABLE_FDP | |
031118c4 | 68 | { LLDPD_MODE_FDP, 0, "FDP", 'f', fdp_send, cdp_decode, NULL, |
f2dcb180 | 69 | FDP_MULTICAST_ADDR }, |
4bad1937 | 70 | #endif |
43c02e7b | 71 | { 0, 0, "any", ' ', NULL, NULL, NULL, |
f2dcb180 | 72 | {0,0,0,0,0,0} } |
43c02e7b VB |
73 | }; |
74 | ||
6e75df87 VB |
75 | static void lldpd_update_localchassis(struct lldpd *); |
76 | static void lldpd_update_localports(struct lldpd *); | |
77 | static void lldpd_cleanup(struct lldpd *); | |
8888d191 VB |
78 | static void lldpd_loop(struct lldpd *); |
79 | static void lldpd_shutdown(int); | |
6f1046d1 | 80 | static void lldpd_exit(void); |
8888d191 VB |
81 | static void lldpd_send_all(struct lldpd *); |
82 | static void lldpd_recv_all(struct lldpd *); | |
83 | static int lldpd_guess_type(struct lldpd *, char *, int); | |
84 | static void lldpd_decode(struct lldpd *, char *, int, | |
0bc32943 | 85 | struct lldpd_hardware *); |
16f910e1 VB |
86 | static void lldpd_update_chassis(struct lldpd_chassis *, |
87 | const struct lldpd_chassis *); | |
89840df0 | 88 | #ifdef ENABLE_LLDPMED |
8888d191 | 89 | static void lldpd_med(struct lldpd_chassis *); |
89840df0 | 90 | #endif |
43c02e7b | 91 | |
8888d191 | 92 | static char **saved_argv; |
6bb9c4e0 VB |
93 | #ifdef HAVE___PROGNAME |
94 | extern const char *__progname; | |
95 | #else | |
96 | # define __progname "lldpd" | |
97 | #endif | |
43c02e7b | 98 | |
8888d191 | 99 | static void |
43c02e7b VB |
100 | usage(void) |
101 | { | |
53132616 VB |
102 | fprintf(stderr, "Usage: %s [OPTIONS ...]\n", __progname); |
103 | ||
104 | fprintf(stderr, "\n"); | |
105 | ||
106 | fprintf(stderr, "-d Do not daemonize.\n"); | |
107 | fprintf(stderr, "-i Disable LLDP-MED inventory TLV transmission.\n"); | |
108 | fprintf(stderr, "-k Disable advertising of kernel release, version, machine.\n"); | |
109 | fprintf(stderr, "-m IP Specify the management address of this system.\n"); | |
8347587d | 110 | #ifdef ENABLE_LLDPMED |
53132616 VB |
111 | fprintf(stderr, "-M class Enable emission of LLDP-MED frame. 'class' should be one of:\n"); |
112 | fprintf(stderr, " 1 Generic Endpoint (Class I)\n"); | |
113 | fprintf(stderr, " 2 Media Endpoint (Class II)\n"); | |
114 | fprintf(stderr, " 3 Communication Device Endpoints (Class III)\n"); | |
115 | fprintf(stderr, " 4 Network Connectivity Device\n"); | |
8347587d VB |
116 | #endif |
117 | #ifdef USE_SNMP | |
53132616 | 118 | fprintf(stderr, "-x Enable SNMP subagent.\n"); |
8347587d | 119 | #endif |
53132616 VB |
120 | #ifdef ENABLE_LISTENVLAN |
121 | fprintf(stderr, "-v Listen on VLAN as well.\n"); | |
122 | #endif | |
123 | fprintf(stderr, "\n"); | |
124 | ||
8347587d VB |
125 | #if defined ENABLE_CDP || defined ENABLE_EDP || defined ENABLE_FDP || defined ENABLE_SONMP |
126 | fprintf(stderr, "Additional protocol support.\n"); | |
127 | #ifdef ENABLE_CDP | |
53132616 | 128 | fprintf(stderr, "-c Enable the support of CDP protocol. (Cisco)\n"); |
8347587d VB |
129 | #endif |
130 | #ifdef ENABLE_EDP | |
53132616 | 131 | fprintf(stderr, "-e Enable the support of EDP protocol. (Extreme)\n"); |
8347587d VB |
132 | #endif |
133 | #ifdef ENABLE_FDP | |
53132616 | 134 | fprintf(stderr, "-f Enable the support of FDP protocol. (Foundry)\n"); |
8347587d VB |
135 | #endif |
136 | #ifdef ENABLE_SONMP | |
53132616 | 137 | fprintf(stderr, "-s Enable the support of SONMP protocol. (Nortel)\n"); |
8347587d | 138 | #endif |
53132616 VB |
139 | |
140 | fprintf(stderr, "\n"); | |
8347587d | 141 | #endif |
53132616 | 142 | |
e809a587 | 143 | fprintf(stderr, "see manual page lldpd(8) for more information\n"); |
43c02e7b VB |
144 | exit(1); |
145 | } | |
146 | ||
6e75df87 | 147 | struct lldpd_hardware * |
44002d66 | 148 | lldpd_get_hardware(struct lldpd *cfg, char *name, int index, struct lldpd_ops *ops) |
43c02e7b | 149 | { |
6e75df87 VB |
150 | struct lldpd_hardware *hardware; |
151 | TAILQ_FOREACH(hardware, &cfg->g_hardware, h_entries) { | |
849954d7 | 152 | if ((strcmp(hardware->h_ifname, name) == 0) && |
44002d66 | 153 | (hardware->h_ifindex == index) && |
849954d7 | 154 | ((!ops) || (ops == hardware->h_ops))) |
6e75df87 | 155 | break; |
43c02e7b | 156 | } |
6e75df87 | 157 | return hardware; |
43c02e7b VB |
158 | } |
159 | ||
6e75df87 VB |
160 | struct lldpd_hardware * |
161 | lldpd_alloc_hardware(struct lldpd *cfg, char *name) | |
43c02e7b | 162 | { |
6e75df87 | 163 | struct lldpd_hardware *hardware; |
43c02e7b | 164 | |
6e75df87 VB |
165 | if ((hardware = (struct lldpd_hardware *) |
166 | calloc(1, sizeof(struct lldpd_hardware))) == NULL) | |
167 | return NULL; | |
43c02e7b | 168 | |
6e75df87 VB |
169 | strlcpy(hardware->h_ifname, name, sizeof(hardware->h_ifname)); |
170 | hardware->h_lport.p_chassis = LOCAL_CHASSIS(cfg); | |
9df5ec3d | 171 | hardware->h_lport.p_chassis->c_refcount++; |
6e75df87 | 172 | TAILQ_INIT(&hardware->h_rports); |
43c02e7b | 173 | |
6e75df87 VB |
174 | #ifdef ENABLE_LLDPMED |
175 | if (LOCAL_CHASSIS(cfg)->c_med_cap_available) { | |
176 | hardware->h_lport.p_med_cap_enabled = LLDPMED_CAP_CAP; | |
177 | if (!cfg->g_noinventory) | |
178 | hardware->h_lport.p_med_cap_enabled |= LLDPMED_CAP_IV; | |
179 | } | |
180 | #endif | |
181 | #ifdef ENABLE_DOT1 | |
182 | TAILQ_INIT(&hardware->h_lport.p_vlans); | |
183 | #endif | |
184 | return hardware; | |
43c02e7b VB |
185 | } |
186 | ||
a1347cd8 | 187 | #ifdef ENABLE_DOT1 |
43c02e7b VB |
188 | void |
189 | lldpd_vlan_cleanup(struct lldpd_port *port) | |
190 | { | |
191 | struct lldpd_vlan *vlan, *vlan_next; | |
192 | for (vlan = TAILQ_FIRST(&port->p_vlans); | |
193 | vlan != NULL; | |
194 | vlan = vlan_next) { | |
195 | free(vlan->v_name); | |
196 | vlan_next = TAILQ_NEXT(vlan, v_entries); | |
197 | TAILQ_REMOVE(&port->p_vlans, vlan, v_entries); | |
198 | free(vlan); | |
199 | } | |
200 | } | |
a1347cd8 | 201 | #endif |
43c02e7b | 202 | |
a0edeaf8 | 203 | /* If `all' is true, clear all information, including information that |
4e624dc2 | 204 | are not refreshed periodically. Port should be freed manually. */ |
43c02e7b | 205 | void |
9898ac07 | 206 | lldpd_port_cleanup(struct lldpd *cfg, struct lldpd_port *port, int all) |
43c02e7b | 207 | { |
740593ff VB |
208 | #ifdef ENABLE_LLDPMED |
209 | int i; | |
a0edeaf8 VB |
210 | if (all) |
211 | for (i=0; i < LLDPMED_LOCFORMAT_LAST; i++) | |
212 | free(port->p_med_location[i].data); | |
740593ff | 213 | #endif |
a1347cd8 | 214 | #ifdef ENABLE_DOT1 |
43c02e7b | 215 | lldpd_vlan_cleanup(port); |
a1347cd8 | 216 | #endif |
43c02e7b VB |
217 | free(port->p_id); |
218 | free(port->p_descr); | |
77507b69 VB |
219 | if (all) { |
220 | free(port->p_lastframe); | |
9898ac07 | 221 | if (port->p_chassis) { /* chassis may not have been attributed, yet */ |
77507b69 | 222 | port->p_chassis->c_refcount--; |
9898ac07 V |
223 | port->p_chassis = NULL; |
224 | } | |
77507b69 | 225 | } |
43c02e7b VB |
226 | } |
227 | ||
228 | void | |
77507b69 | 229 | lldpd_chassis_cleanup(struct lldpd_chassis *chassis, int all) |
43c02e7b | 230 | { |
89840df0 VB |
231 | #ifdef ENABLE_LLDPMED |
232 | free(chassis->c_med_hw); | |
517d524b | 233 | free(chassis->c_med_sw); |
89840df0 VB |
234 | free(chassis->c_med_fw); |
235 | free(chassis->c_med_sn); | |
236 | free(chassis->c_med_manuf); | |
237 | free(chassis->c_med_model); | |
238 | free(chassis->c_med_asset); | |
239 | #endif | |
43c02e7b VB |
240 | free(chassis->c_id); |
241 | free(chassis->c_name); | |
242 | free(chassis->c_descr); | |
77507b69 VB |
243 | if (all) |
244 | free(chassis); | |
43c02e7b VB |
245 | } |
246 | ||
247 | void | |
77507b69 | 248 | lldpd_remote_cleanup(struct lldpd *cfg, struct lldpd_hardware *hardware, int all) |
43c02e7b | 249 | { |
77507b69 VB |
250 | struct lldpd_port *port, *port_next; |
251 | int del; | |
252 | for (port = TAILQ_FIRST(&hardware->h_rports); | |
253 | port != NULL; | |
254 | port = port_next) { | |
255 | port_next = TAILQ_NEXT(port, p_entries); | |
256 | del = all; | |
257 | if (!del && | |
258 | (time(NULL) - port->p_lastupdate > port->p_chassis->c_ttl)) { | |
259 | hardware->h_rx_ageout_cnt++; | |
260 | del = 1; | |
261 | } | |
262 | if (del) { | |
263 | TAILQ_REMOVE(&hardware->h_rports, port, p_entries); | |
9898ac07 | 264 | lldpd_port_cleanup(cfg, port, 1); |
4e624dc2 | 265 | free(port); |
77507b69 | 266 | } |
43c02e7b | 267 | } |
43c02e7b VB |
268 | } |
269 | ||
d9be8ea0 | 270 | void |
6e75df87 | 271 | lldpd_hardware_cleanup(struct lldpd *cfg, struct lldpd_hardware *hardware) |
d9be8ea0 | 272 | { |
6e75df87 | 273 | int i; |
9898ac07 | 274 | lldpd_port_cleanup(cfg, &hardware->h_lport, 1); |
6e75df87 VB |
275 | /* If we have a dedicated cleanup function, use it. Otherwise, |
276 | we just free the hardware-dependent data and close all FD | |
277 | in h_recvfds and h_sendfd. */ | |
278 | if (hardware->h_ops->cleanup) | |
279 | hardware->h_ops->cleanup(cfg, hardware); | |
280 | else { | |
281 | free(hardware->h_data); | |
bc598c23 | 282 | for (i=0; i < LLDPD_FD_SETSIZE; i++) |
6e75df87 VB |
283 | if (FD_ISSET(i, &hardware->h_recvfds)) |
284 | close(i); | |
285 | if (hardware->h_sendfd) close(hardware->h_sendfd); | |
286 | } | |
d9be8ea0 VB |
287 | free(hardware); |
288 | } | |
289 | ||
6e75df87 | 290 | static void |
43c02e7b VB |
291 | lldpd_cleanup(struct lldpd *cfg) |
292 | { | |
293 | struct lldpd_hardware *hardware, *hardware_next; | |
aadc9936 | 294 | struct lldpd_chassis *chassis, *chassis_next; |
43c02e7b VB |
295 | |
296 | for (hardware = TAILQ_FIRST(&cfg->g_hardware); hardware != NULL; | |
297 | hardware = hardware_next) { | |
298 | hardware_next = TAILQ_NEXT(hardware, h_entries); | |
6e75df87 | 299 | if (!hardware->h_flags) { |
43c02e7b | 300 | TAILQ_REMOVE(&cfg->g_hardware, hardware, h_entries); |
77507b69 | 301 | lldpd_remote_cleanup(cfg, hardware, 1); |
6e75df87 | 302 | lldpd_hardware_cleanup(cfg, hardware); |
77507b69 VB |
303 | } else |
304 | lldpd_remote_cleanup(cfg, hardware, 0); | |
43c02e7b | 305 | } |
aadc9936 VB |
306 | |
307 | for (chassis = TAILQ_FIRST(&cfg->g_chassis); chassis; | |
308 | chassis = chassis_next) { | |
309 | chassis_next = TAILQ_NEXT(chassis, c_entries); | |
310 | if (chassis->c_refcount == 0) { | |
311 | TAILQ_REMOVE(&cfg->g_chassis, chassis, c_entries); | |
312 | lldpd_chassis_cleanup(chassis, 1); | |
313 | } | |
314 | } | |
43c02e7b VB |
315 | } |
316 | ||
8888d191 | 317 | static int |
43c02e7b VB |
318 | lldpd_guess_type(struct lldpd *cfg, char *frame, int s) |
319 | { | |
320 | int i; | |
321 | if (s < ETH_ALEN) | |
322 | return -1; | |
323 | for (i=0; cfg->g_protocols[i].mode != 0; i++) { | |
324 | if (!cfg->g_protocols[i].enabled) | |
325 | continue; | |
326 | if (cfg->g_protocols[i].guess == NULL) { | |
327 | if (memcmp(frame, cfg->g_protocols[i].mac, ETH_ALEN) == 0) | |
328 | return cfg->g_protocols[i].mode; | |
329 | } else { | |
330 | if (cfg->g_protocols[i].guess(frame, s)) | |
331 | return cfg->g_protocols[i].mode; | |
332 | } | |
333 | } | |
334 | return -1; | |
335 | } | |
336 | ||
8888d191 | 337 | static void |
43c02e7b | 338 | lldpd_decode(struct lldpd *cfg, char *frame, int s, |
0bc32943 | 339 | struct lldpd_hardware *hardware) |
43c02e7b | 340 | { |
77507b69 VB |
341 | int i, result; |
342 | struct lldpd_chassis *chassis, *ochassis = NULL; | |
343 | struct lldpd_port *port, *oport = NULL; | |
43c02e7b VB |
344 | int guess = LLDPD_MODE_LLDP; |
345 | ||
50a89ca7 | 346 | /* Discard VLAN frames */ |
a8105c1b VB |
347 | if ((s >= sizeof(struct ethhdr)) && |
348 | (((struct ethhdr*)frame)->h_proto == htons(ETHERTYPE_VLAN))) | |
50a89ca7 VB |
349 | return; |
350 | ||
77507b69 VB |
351 | TAILQ_FOREACH(oport, &hardware->h_rports, p_entries) { |
352 | if ((oport->p_lastframe != NULL) && | |
353 | (oport->p_lastframe->size == s) && | |
354 | (memcmp(oport->p_lastframe->frame, frame, s) == 0)) { | |
355 | /* Already received the same frame */ | |
356 | oport->p_lastupdate = time(NULL); | |
357 | return; | |
358 | } | |
43c02e7b VB |
359 | } |
360 | ||
f2dcb180 VB |
361 | guess = lldpd_guess_type(cfg, frame, s); |
362 | for (i=0; cfg->g_protocols[i].mode != 0; i++) { | |
363 | if (!cfg->g_protocols[i].enabled) | |
364 | continue; | |
365 | if (cfg->g_protocols[i].mode == guess) { | |
366 | if ((result = cfg->g_protocols[i].decode(cfg, frame, | |
367 | s, hardware, &chassis, &port)) == -1) | |
368 | return; | |
77507b69 VB |
369 | chassis->c_protocol = port->p_protocol = |
370 | cfg->g_protocols[i].mode; | |
f2dcb180 | 371 | break; |
43c02e7b | 372 | } |
f2dcb180 VB |
373 | } |
374 | if (cfg->g_protocols[i].mode == 0) { | |
375 | LLOG_INFO("unable to guess frame type"); | |
43c02e7b | 376 | return; |
f2dcb180 | 377 | } |
43c02e7b | 378 | |
77507b69 VB |
379 | /* Do we already have the same MSAP somewhere? */ |
380 | TAILQ_FOREACH(oport, &hardware->h_rports, p_entries) { | |
381 | if ((port->p_protocol == oport->p_protocol) && | |
382 | (port->p_id_subtype == oport->p_id_subtype) && | |
383 | (port->p_id_len == oport->p_id_len) && | |
384 | (memcmp(port->p_id, oport->p_id, port->p_id_len) == 0) && | |
385 | (chassis->c_id_subtype == oport->p_chassis->c_id_subtype) && | |
386 | (chassis->c_id_len == oport->p_chassis->c_id_len) && | |
387 | (memcmp(chassis->c_id, oport->p_chassis->c_id, | |
388 | chassis->c_id_len) == 0)) { | |
389 | ochassis = oport->p_chassis; | |
390 | break; | |
391 | } | |
43c02e7b | 392 | } |
77507b69 VB |
393 | /* No, but do we already know the system? */ |
394 | if (!oport) { | |
395 | TAILQ_FOREACH(ochassis, &cfg->g_chassis, c_entries) { | |
396 | if ((chassis->c_protocol == ochassis->c_protocol) && | |
397 | (chassis->c_id_subtype == ochassis->c_id_subtype) && | |
398 | (chassis->c_id_len == ochassis->c_id_len) && | |
399 | (memcmp(chassis->c_id, ochassis->c_id, | |
400 | chassis->c_id_len) == 0)) | |
401 | break; | |
43c02e7b | 402 | } |
43c02e7b | 403 | } |
43c02e7b | 404 | |
77507b69 VB |
405 | if (oport) { |
406 | /* The port is known, remove it before adding it back */ | |
407 | TAILQ_REMOVE(&hardware->h_rports, oport, p_entries); | |
9898ac07 | 408 | lldpd_port_cleanup(cfg, oport, 1); |
4e624dc2 | 409 | free(oport); |
77507b69 VB |
410 | } |
411 | if (ochassis) { | |
16f910e1 | 412 | lldpd_update_chassis(ochassis, chassis); |
77507b69 VB |
413 | free(chassis); |
414 | chassis = ochassis; | |
415 | } else { | |
416 | /* Chassis not known, add it */ | |
417 | chassis->c_index = ++cfg->g_lastrid; | |
77507b69 VB |
418 | chassis->c_refcount = 0; |
419 | TAILQ_INSERT_TAIL(&cfg->g_chassis, chassis, c_entries); | |
f4c43902 VB |
420 | i = 0; TAILQ_FOREACH(ochassis, &cfg->g_chassis, c_entries) i++; |
421 | LLOG_DEBUG("Currently, we know %d different systems", i); | |
77507b69 VB |
422 | } |
423 | /* Add port */ | |
424 | port->p_lastchange = port->p_lastupdate = time(NULL); | |
425 | if ((port->p_lastframe = (struct lldpd_frame *)malloc(s + | |
426 | sizeof(int))) != NULL) { | |
427 | port->p_lastframe->size = s; | |
428 | memcpy(port->p_lastframe->frame, frame, s); | |
429 | } | |
430 | TAILQ_INSERT_TAIL(&hardware->h_rports, port, p_entries); | |
431 | port->p_chassis = chassis; | |
432 | port->p_chassis->c_refcount++; | |
9df5ec3d VB |
433 | /* Several cases are possible : |
434 | 1. chassis is new, its refcount was 0. It is now attached | |
435 | to this port, its refcount is 1. | |
436 | 2. chassis already exists and was attached to another | |
437 | port, we increase its refcount accordingly. | |
438 | 3. chassis already exists and was attached to the same | |
439 | port, its refcount was decreased with | |
440 | lldpd_port_cleanup() and is now increased again. | |
441 | ||
442 | In all cases, if the port already existed, it has been | |
443 | freed with lldpd_port_cleanup() and therefore, the refcount | |
444 | of the chassis that was attached to it is decreased. | |
445 | */ | |
f4c43902 VB |
446 | i = 0; TAILQ_FOREACH(oport, &hardware->h_rports, p_entries) i++; |
447 | LLOG_DEBUG("Currently, %s known %d neighbors", | |
448 | hardware->h_ifname, i); | |
43c02e7b VB |
449 | return; |
450 | } | |
451 | ||
16f910e1 VB |
452 | /* Update chassis `ochassis' with values from `chassis'. */ |
453 | static void | |
454 | lldpd_update_chassis(struct lldpd_chassis *ochassis, | |
455 | const struct lldpd_chassis *chassis) { | |
456 | TAILQ_ENTRY(lldpd_chassis) entries; | |
457 | /* We want to keep refcount, index and list stuff from the current | |
458 | * chassis */ | |
459 | int refcount = ochassis->c_refcount; | |
460 | int index = ochassis->c_index; | |
461 | memcpy(&entries, &ochassis->c_entries, | |
462 | sizeof(entries)); | |
463 | /* Make the copy */ | |
464 | lldpd_chassis_cleanup(ochassis, 0); | |
465 | memcpy(ochassis, chassis, sizeof(struct lldpd_chassis)); | |
466 | /* Restore saved values */ | |
467 | ochassis->c_refcount = refcount; | |
468 | ochassis->c_index = index; | |
469 | memcpy(&ochassis->c_entries, &entries, sizeof(entries)); | |
470 | } | |
471 | ||
77d7090e VB |
472 | int |
473 | lldpd_callback_add(struct lldpd *cfg, int fd, void(*fn)(CALLBACK_SIG), void *data) | |
474 | { | |
475 | struct lldpd_callback *callback; | |
476 | if ((callback = (struct lldpd_callback *) | |
477 | malloc(sizeof(struct lldpd_callback))) == NULL) | |
478 | return -1; | |
479 | callback->fd = fd; | |
480 | callback->function = fn; | |
481 | callback->data = data; | |
482 | TAILQ_INSERT_TAIL(&cfg->g_callbacks, callback, next); | |
483 | return 0; | |
484 | } | |
485 | ||
486 | void | |
487 | lldpd_callback_del(struct lldpd *cfg, int fd, void(*fn)(CALLBACK_SIG)) | |
488 | { | |
489 | struct lldpd_callback *callback, *callback_next; | |
490 | for (callback = TAILQ_FIRST(&cfg->g_callbacks); | |
491 | callback; | |
492 | callback = callback_next) { | |
493 | callback_next = TAILQ_NEXT(callback, next); | |
494 | if ((callback->fd == fd) && | |
495 | (callback->function = fn)) { | |
496 | free(callback->data); | |
497 | TAILQ_REMOVE(&cfg->g_callbacks, callback, next); | |
498 | free(callback); | |
499 | } | |
500 | } | |
501 | } | |
16f910e1 | 502 | |
8888d191 | 503 | static void |
43c02e7b VB |
504 | lldpd_recv_all(struct lldpd *cfg) |
505 | { | |
506 | struct lldpd_hardware *hardware; | |
77d7090e | 507 | struct lldpd_callback *callback, *callback_next; |
43c02e7b VB |
508 | fd_set rfds; |
509 | struct timeval tv; | |
43c02e7b VB |
510 | #ifdef USE_SNMP |
511 | int fakeblock = 0; | |
512 | struct timeval *tvp = &tv; | |
513 | #endif | |
0bc32943 | 514 | int rc, nfds, n; |
43c02e7b VB |
515 | char *buffer; |
516 | ||
517 | do { | |
518 | tv.tv_sec = cfg->g_delay - (time(NULL) - cfg->g_lastsent); | |
519 | if (tv.tv_sec < 0) | |
520 | tv.tv_sec = LLDPD_TX_DELAY; | |
521 | if (tv.tv_sec >= cfg->g_delay) | |
522 | tv.tv_sec = cfg->g_delay; | |
523 | tv.tv_usec = 0; | |
524 | ||
525 | FD_ZERO(&rfds); | |
526 | nfds = -1; | |
527 | ||
528 | TAILQ_FOREACH(hardware, &cfg->g_hardware, h_entries) { | |
529 | /* Ignore if interface is down */ | |
6e75df87 | 530 | if ((hardware->h_flags & IFF_RUNNING) == 0) |
43c02e7b | 531 | continue; |
6e75df87 VB |
532 | /* This is quite expensive but we don't rely on internal |
533 | * structure of fd_set. */ | |
bc598c23 | 534 | for (n = 0; n < LLDPD_FD_SETSIZE; n++) |
6e75df87 VB |
535 | if (FD_ISSET(n, &hardware->h_recvfds)) { |
536 | FD_SET(n, &rfds); | |
537 | if (nfds < n) | |
538 | nfds = n; | |
539 | } | |
43c02e7b | 540 | } |
77d7090e VB |
541 | TAILQ_FOREACH(callback, &cfg->g_callbacks, next) { |
542 | FD_SET(callback->fd, &rfds); | |
543 | if (nfds < callback->fd) | |
544 | nfds = callback->fd; | |
43c02e7b | 545 | } |
43c02e7b VB |
546 | |
547 | #ifdef USE_SNMP | |
548 | if (cfg->g_snmp) | |
549 | snmp_select_info(&nfds, &rfds, tvp, &fakeblock); | |
550 | #endif /* USE_SNMP */ | |
551 | if (nfds == -1) { | |
552 | sleep(cfg->g_delay); | |
553 | return; | |
554 | } | |
555 | ||
556 | rc = select(nfds + 1, &rfds, NULL, NULL, &tv); | |
557 | if (rc == -1) { | |
558 | if (errno == EINTR) | |
559 | continue; | |
560 | LLOG_WARN("failure on select"); | |
561 | break; | |
562 | } | |
563 | #ifdef USE_SNMP | |
564 | if (cfg->g_snmp) { | |
565 | if (rc > 0) | |
566 | snmp_read(&rfds); | |
567 | else if (rc == 0) | |
568 | snmp_timeout(); | |
569 | } | |
570 | #endif /* USE_SNMP */ | |
571 | TAILQ_FOREACH(hardware, &cfg->g_hardware, h_entries) { | |
bc598c23 | 572 | for (n = 0; n < LLDPD_FD_SETSIZE; n++) |
6e75df87 VB |
573 | if ((FD_ISSET(n, &hardware->h_recvfds)) && |
574 | (FD_ISSET(n, &rfds))) break; | |
bc598c23 | 575 | if (n == LLDPD_FD_SETSIZE) continue; |
6e75df87 VB |
576 | if ((buffer = (char *)malloc( |
577 | hardware->h_mtu)) == NULL) { | |
578 | LLOG_WARN("failed to alloc reception buffer"); | |
579 | continue; | |
580 | } | |
581 | if ((n = hardware->h_ops->recv(cfg, hardware, | |
582 | n, buffer, hardware->h_mtu)) == -1) { | |
43c02e7b | 583 | free(buffer); |
6e75df87 | 584 | continue; |
43c02e7b | 585 | } |
6e75df87 VB |
586 | hardware->h_rx_cnt++; |
587 | lldpd_decode(cfg, buffer, n, hardware); | |
588 | free(buffer); | |
589 | break; | |
43c02e7b | 590 | } |
77d7090e VB |
591 | for (callback = TAILQ_FIRST(&cfg->g_callbacks); |
592 | callback; | |
593 | callback = callback_next) { | |
594 | /* Callback function can use TAILQ_REMOVE */ | |
595 | callback_next = TAILQ_NEXT(callback, next); | |
596 | if (FD_ISSET(callback->fd, &rfds)) | |
597 | callback->function(cfg, callback); | |
43c02e7b VB |
598 | } |
599 | ||
600 | #ifdef USE_SNMP | |
601 | if (cfg->g_snmp) { | |
602 | run_alarms(); | |
603 | netsnmp_check_outstanding_agent_requests(); | |
604 | } | |
605 | #endif /* USE_SNMP */ | |
606 | } while ((rc != 0) || (time(NULL) - cfg->g_lastsent < cfg->g_delay)); | |
607 | } | |
608 | ||
8888d191 | 609 | static void |
43c02e7b VB |
610 | lldpd_send_all(struct lldpd *cfg) |
611 | { | |
612 | struct lldpd_hardware *hardware; | |
77507b69 | 613 | struct lldpd_port *port; |
0d86e62f | 614 | int i, sent; |
f7db0dd8 | 615 | |
43c02e7b VB |
616 | cfg->g_lastsent = time(NULL); |
617 | TAILQ_FOREACH(hardware, &cfg->g_hardware, h_entries) { | |
618 | /* Ignore if interface is down */ | |
6e75df87 | 619 | if ((hardware->h_flags & IFF_RUNNING) == 0) |
43c02e7b VB |
620 | continue; |
621 | ||
0d86e62f | 622 | sent = 0; |
43c02e7b VB |
623 | for (i=0; cfg->g_protocols[i].mode != 0; i++) { |
624 | if (!cfg->g_protocols[i].enabled) | |
625 | continue; | |
77507b69 | 626 | /* We send only if we have at least one remote system |
0c877af0 VB |
627 | * speaking this protocol or if the protocol is forced */ |
628 | if (cfg->g_protocols[i].enabled > 1) { | |
629 | cfg->g_protocols[i].send(cfg, hardware); | |
630 | sent++; | |
631 | continue; | |
632 | } | |
77507b69 VB |
633 | TAILQ_FOREACH(port, &hardware->h_rports, p_entries) { |
634 | if (port->p_protocol == | |
635 | cfg->g_protocols[i].mode) { | |
636 | cfg->g_protocols[i].send(cfg, | |
637 | hardware); | |
0c877af0 | 638 | sent++; |
77507b69 VB |
639 | break; |
640 | } | |
641 | } | |
43c02e7b | 642 | } |
77507b69 VB |
643 | |
644 | if (!sent) | |
645 | /* Nothing was sent for this port, let's speak LLDP */ | |
646 | cfg->g_protocols[0].send(cfg, | |
647 | hardware); | |
43c02e7b VB |
648 | } |
649 | } | |
650 | ||
89840df0 | 651 | #ifdef ENABLE_LLDPMED |
8888d191 | 652 | static void |
89840df0 VB |
653 | lldpd_med(struct lldpd_chassis *chassis) |
654 | { | |
655 | free(chassis->c_med_hw); | |
656 | free(chassis->c_med_fw); | |
657 | free(chassis->c_med_sn); | |
658 | free(chassis->c_med_manuf); | |
659 | free(chassis->c_med_model); | |
660 | free(chassis->c_med_asset); | |
661 | chassis->c_med_hw = dmi_hw(); | |
662 | chassis->c_med_fw = dmi_fw(); | |
663 | chassis->c_med_sn = dmi_sn(); | |
664 | chassis->c_med_manuf = dmi_manuf(); | |
665 | chassis->c_med_model = dmi_model(); | |
666 | chassis->c_med_asset = dmi_asset(); | |
667 | } | |
668 | #endif | |
669 | ||
8888d191 | 670 | static void |
6e75df87 | 671 | lldpd_update_localchassis(struct lldpd *cfg) |
43c02e7b | 672 | { |
6e75df87 VB |
673 | struct utsname un; |
674 | char *hp; | |
43c02e7b VB |
675 | int f; |
676 | char status; | |
6e75df87 | 677 | struct lldpd_hardware *hardware; |
43c02e7b VB |
678 | |
679 | /* Set system name and description */ | |
6e75df87 | 680 | if (uname(&un) != 0) |
43c02e7b | 681 | fatal("failed to get system information"); |
b5562b23 | 682 | if ((hp = priv_gethostbyname()) == NULL) |
43c02e7b | 683 | fatal("failed to get system name"); |
77507b69 VB |
684 | free(LOCAL_CHASSIS(cfg)->c_name); |
685 | free(LOCAL_CHASSIS(cfg)->c_descr); | |
686 | if ((LOCAL_CHASSIS(cfg)->c_name = strdup(hp)) == NULL) | |
249644a4 | 687 | fatal(NULL); |
de1b1b3a VB |
688 | if (cfg->g_advertise_version) { |
689 | if (asprintf(&LOCAL_CHASSIS(cfg)->c_descr, "%s %s %s %s", | |
690 | un.sysname, un.release, un.version, un.machine) == -1) | |
691 | fatal("failed to set full system description"); | |
692 | } else { | |
693 | if (asprintf(&LOCAL_CHASSIS(cfg)->c_descr, "%s", un.sysname) == -1) | |
694 | fatal("failed to set minimal system description"); | |
695 | } | |
43c02e7b VB |
696 | |
697 | /* Check forwarding */ | |
b5562b23 | 698 | if ((f = priv_open("/proc/sys/net/ipv4/ip_forward")) >= 0) { |
4afe659e | 699 | if ((read(f, &status, 1) == 1) && (status == '1')) { |
77507b69 | 700 | LOCAL_CHASSIS(cfg)->c_cap_enabled = LLDP_CAP_ROUTER; |
4afe659e | 701 | } |
43c02e7b VB |
702 | close(f); |
703 | } | |
89840df0 | 704 | #ifdef ENABLE_LLDPMED |
77507b69 VB |
705 | if (LOCAL_CHASSIS(cfg)->c_cap_available & LLDP_CAP_TELEPHONE) |
706 | LOCAL_CHASSIS(cfg)->c_cap_enabled |= LLDP_CAP_TELEPHONE; | |
707 | lldpd_med(LOCAL_CHASSIS(cfg)); | |
708 | free(LOCAL_CHASSIS(cfg)->c_med_sw); | |
de1b1b3a VB |
709 | if (cfg->g_advertise_version) |
710 | LOCAL_CHASSIS(cfg)->c_med_sw = strdup(un.release); | |
711 | else | |
712 | LOCAL_CHASSIS(cfg)->c_med_sw = strdup("Unknown"); | |
89840df0 | 713 | #endif |
43c02e7b | 714 | |
6e75df87 VB |
715 | /* Set chassis ID if needed */ |
716 | if ((LOCAL_CHASSIS(cfg)->c_id == NULL) && | |
717 | (hardware = TAILQ_FIRST(&cfg->g_hardware))) { | |
718 | if ((LOCAL_CHASSIS(cfg)->c_id = | |
719 | malloc(sizeof(hardware->h_lladdr))) == NULL) | |
720 | fatal(NULL); | |
721 | LOCAL_CHASSIS(cfg)->c_id_subtype = LLDP_CHASSISID_SUBTYPE_LLADDR; | |
722 | LOCAL_CHASSIS(cfg)->c_id_len = sizeof(hardware->h_lladdr); | |
723 | memcpy(LOCAL_CHASSIS(cfg)->c_id, | |
724 | hardware->h_lladdr, sizeof(hardware->h_lladdr)); | |
725 | } | |
726 | } | |
727 | ||
728 | static void | |
729 | lldpd_update_localports(struct lldpd *cfg) | |
730 | { | |
731 | struct ifaddrs *ifap; | |
732 | struct lldpd_hardware *hardware; | |
733 | lldpd_ifhandlers ifhs[] = { | |
849954d7 | 734 | lldpd_ifh_bond, /* Handle bond */ |
6e75df87 | 735 | lldpd_ifh_eth, /* Handle classic ethernet interfaces */ |
5994b27d | 736 | #ifdef ENABLE_DOT1 |
6e75df87 | 737 | lldpd_ifh_vlan, /* Handle VLAN */ |
5994b27d | 738 | #endif |
6e75df87 VB |
739 | lldpd_ifh_mgmt, /* Handle management address (if not already handled) */ |
740 | NULL | |
741 | }; | |
742 | lldpd_ifhandlers *ifh; | |
743 | ||
744 | /* h_flags is set to 0 for each port. If the port is updated, h_flags | |
745 | * will be set to a non-zero value. This will allow us to clean up any | |
746 | * non up-to-date port */ | |
43c02e7b VB |
747 | TAILQ_FOREACH(hardware, &cfg->g_hardware, h_entries) |
748 | hardware->h_flags = 0; | |
749 | ||
77507b69 | 750 | LOCAL_CHASSIS(cfg)->c_mgmt.s_addr = INADDR_ANY; |
6e75df87 VB |
751 | if (getifaddrs(&ifap) != 0) |
752 | fatal("lldpd_update_localports: failed to get interface list"); | |
753 | ||
754 | /* We will run the list of interfaces through a list of interface | |
755 | * handlers. Each handler will create or update some hardware port (and | |
756 | * will set h_flags to a non zero value. The handler can use the list of | |
757 | * interfaces but this is not mandatory. If the interface handler | |
758 | * handles an interface from the list, it should set ifa_flags to 0 to | |
759 | * let know the other handlers that it took care of this interface. This | |
760 | * means that more specific handlers should be before less specific | |
761 | * ones. */ | |
762 | for (ifh = ifhs; *ifh != NULL; ifh++) | |
763 | (*ifh)(cfg, ifap); | |
43c02e7b | 764 | freeifaddrs(ifap); |
6e75df87 | 765 | } |
43c02e7b | 766 | |
6e75df87 VB |
767 | static void |
768 | lldpd_loop(struct lldpd *cfg) | |
769 | { | |
770 | /* Main loop. | |
771 | ||
772 | 1. Update local ports information | |
773 | 2. Clean unwanted (removed) local ports | |
774 | 3. Update local chassis information | |
775 | 4. Send packets | |
776 | 5. Receive packets | |
777 | */ | |
849954d7 | 778 | LOCAL_CHASSIS(cfg)->c_cap_enabled = 0; |
6e75df87 | 779 | lldpd_update_localports(cfg); |
43c02e7b | 780 | lldpd_cleanup(cfg); |
6e75df87 | 781 | lldpd_update_localchassis(cfg); |
43c02e7b VB |
782 | lldpd_send_all(cfg); |
783 | lldpd_recv_all(cfg); | |
784 | } | |
785 | ||
8888d191 | 786 | static void |
43c02e7b VB |
787 | lldpd_shutdown(int sig) |
788 | { | |
789 | LLOG_INFO("signal received, exiting"); | |
790 | exit(0); | |
791 | } | |
792 | ||
793 | /* For signal handling */ | |
8888d191 | 794 | static struct lldpd *gcfg = NULL; |
43c02e7b | 795 | |
8888d191 | 796 | static void |
43c02e7b VB |
797 | lldpd_exit() |
798 | { | |
6e75df87 | 799 | struct lldpd_hardware *hardware, *hardware_next; |
b5562b23 VB |
800 | close(gcfg->g_ctl); |
801 | priv_ctl_cleanup(); | |
6e75df87 VB |
802 | for (hardware = TAILQ_FIRST(&gcfg->g_hardware); hardware != NULL; |
803 | hardware = hardware_next) { | |
804 | hardware_next = TAILQ_NEXT(hardware, h_entries); | |
805 | lldpd_hardware_cleanup(gcfg, hardware); | |
43c02e7b VB |
806 | } |
807 | #ifdef USE_SNMP | |
808 | if (gcfg->g_snmp) | |
809 | agent_shutdown(); | |
810 | #endif /* USE_SNMP */ | |
811 | } | |
812 | ||
813 | int | |
2acc1418 | 814 | lldpd_main(int argc, char *argv[]) |
43c02e7b VB |
815 | { |
816 | struct lldpd *cfg; | |
77507b69 | 817 | struct lldpd_chassis *lchassis; |
e809a587 VB |
818 | int ch, debug = 0; |
819 | #ifdef USE_SNMP | |
820 | int snmp = 0; | |
bbea66e1 | 821 | char *agentx = NULL; /* AgentX socket */ |
e809a587 | 822 | #endif |
43c02e7b | 823 | char *mgmtp = NULL; |
993a6e50 VB |
824 | char *popt, opts[] = |
825 | #ifdef ENABLE_LISTENVLAN | |
826 | "v" | |
827 | #endif | |
b162b740 | 828 | "hkdxX:m:p:M:i@ "; |
de1b1b3a | 829 | int i, found, advertise_version = 1; |
993a6e50 VB |
830 | #ifdef ENABLE_LISTENVLAN |
831 | int vlan = 0; | |
832 | #endif | |
89840df0 | 833 | #ifdef ENABLE_LLDPMED |
e809a587 | 834 | int lldpmed = 0, noinventory = 0; |
89840df0 | 835 | #endif |
43c02e7b VB |
836 | |
837 | saved_argv = argv; | |
838 | ||
839 | /* | |
840 | * Get and parse command line options | |
841 | */ | |
f0bd3505 | 842 | popt = strchr(opts, '@'); |
0c877af0 | 843 | for (i=0; protos[i].mode != 0; i++) |
43c02e7b | 844 | *(popt++) = protos[i].arg; |
43c02e7b VB |
845 | *popt = '\0'; |
846 | while ((ch = getopt(argc, argv, opts)) != -1) { | |
847 | switch (ch) { | |
b162b740 VB |
848 | case 'h': |
849 | usage(); | |
850 | break; | |
993a6e50 | 851 | #ifdef ENABLE_LISTENVLAN |
6a2fa591 VB |
852 | case 'v': |
853 | vlan = 1; | |
854 | break; | |
993a6e50 | 855 | #endif |
43c02e7b VB |
856 | case 'd': |
857 | debug++; | |
858 | break; | |
859 | case 'm': | |
860 | mgmtp = optarg; | |
861 | break; | |
de1b1b3a VB |
862 | case 'k': |
863 | advertise_version = 0; | |
864 | break; | |
e809a587 | 865 | #ifdef ENABLE_LLDPMED |
115ff55c | 866 | case 'M': |
89840df0 | 867 | lldpmed = atoi(optarg); |
e809a587 VB |
868 | if ((lldpmed < 1) || (lldpmed > 4)) { |
869 | fprintf(stderr, "-M requires an argument between 1 and 4\n"); | |
89840df0 | 870 | usage(); |
e809a587 | 871 | } |
89840df0 | 872 | break; |
e809a587 | 873 | case 'i': |
e809a587 | 874 | noinventory = 1; |
115ff55c | 875 | break; |
e809a587 | 876 | #else |
115ff55c VB |
877 | case 'M': |
878 | case 'i': | |
115ff55c | 879 | case 'P': |
e809a587 VB |
880 | fprintf(stderr, "LLDP-MED support is not built-in\n"); |
881 | usage(); | |
e809a587 | 882 | break; |
115ff55c | 883 | #endif |
e809a587 | 884 | #ifdef USE_SNMP |
bbea66e1 V |
885 | case 'x': |
886 | snmp = 1; | |
887 | break; | |
888 | case 'X': | |
43c02e7b | 889 | snmp = 1; |
bbea66e1 V |
890 | agentx = optarg; |
891 | break; | |
e809a587 | 892 | #else |
bbea66e1 V |
893 | case 'x': |
894 | case 'X': | |
e809a587 VB |
895 | fprintf(stderr, "SNMP support is not built-in\n"); |
896 | usage(); | |
897 | #endif | |
43c02e7b VB |
898 | break; |
899 | default: | |
900 | found = 0; | |
901 | for (i=0; protos[i].mode != 0; i++) { | |
43c02e7b | 902 | if (ch == protos[i].arg) { |
0c877af0 VB |
903 | protos[i].enabled++; |
904 | /* When an argument enable | |
905 | several protocols, only the | |
906 | first one can be forced. */ | |
907 | if (found && protos[i].enabled > 1) | |
908 | protos[i].enabled = 1; | |
43c02e7b VB |
909 | found = 1; |
910 | } | |
911 | } | |
912 | if (!found) | |
913 | usage(); | |
914 | } | |
915 | } | |
115ff55c | 916 | |
6bb9c4e0 | 917 | log_init(debug, __progname); |
4b9a5a23 | 918 | tzset(); /* Get timezone info before chroot */ |
a2993d83 | 919 | |
eac2f38a VB |
920 | if (!debug) { |
921 | int pid; | |
922 | char *spid; | |
923 | if (daemon(0, 0) != 0) | |
924 | fatal("failed to detach daemon"); | |
925 | if ((pid = open(LLDPD_PID_FILE, | |
0aa5f676 | 926 | O_TRUNC | O_CREAT | O_WRONLY, 0644)) == -1) |
eac2f38a VB |
927 | fatal("unable to open pid file " LLDPD_PID_FILE); |
928 | if (asprintf(&spid, "%d\n", getpid()) == -1) | |
929 | fatal("unable to create pid file " LLDPD_PID_FILE); | |
930 | if (write(pid, spid, strlen(spid)) == -1) | |
931 | fatal("unable to write pid file " LLDPD_PID_FILE); | |
932 | free(spid); | |
933 | close(pid); | |
934 | } | |
935 | ||
a2993d83 | 936 | priv_init(PRIVSEP_CHROOT); |
43c02e7b | 937 | |
43c02e7b VB |
938 | if ((cfg = (struct lldpd *) |
939 | calloc(1, sizeof(struct lldpd))) == NULL) | |
940 | fatal(NULL); | |
941 | ||
766f32b3 | 942 | cfg->g_mgmt_pattern = mgmtp; |
de1b1b3a | 943 | cfg->g_advertise_version = advertise_version; |
993a6e50 | 944 | #ifdef ENABLE_LISTENVLAN |
6a2fa591 | 945 | cfg->g_listen_vlans = vlan; |
993a6e50 | 946 | #endif |
43c02e7b VB |
947 | |
948 | /* Get ioctl socket */ | |
949 | if ((cfg->g_sock = socket(AF_INET, SOCK_DGRAM, 0)) == -1) | |
950 | fatal("failed to get ioctl socket"); | |
951 | cfg->g_delay = LLDPD_TX_DELAY; | |
952 | ||
953 | /* Set system capabilities */ | |
77507b69 VB |
954 | if ((lchassis = (struct lldpd_chassis*) |
955 | calloc(1, sizeof(struct lldpd_chassis))) == NULL) | |
956 | fatal(NULL); | |
957 | lchassis->c_cap_available = LLDP_CAP_BRIDGE | LLDP_CAP_WLAN | | |
43c02e7b | 958 | LLDP_CAP_ROUTER; |
89840df0 VB |
959 | #ifdef ENABLE_LLDPMED |
960 | if (lldpmed > 0) { | |
961 | if (lldpmed == LLDPMED_CLASS_III) | |
77507b69 VB |
962 | lchassis->c_cap_available |= LLDP_CAP_TELEPHONE; |
963 | lchassis->c_med_type = lldpmed; | |
964 | lchassis->c_med_cap_available = LLDPMED_CAP_CAP | | |
115ff55c | 965 | LLDPMED_CAP_IV | LLDPMED_CAP_LOCATION; |
740593ff | 966 | cfg->g_noinventory = noinventory; |
42bddd41 VB |
967 | } else |
968 | cfg->g_noinventory = 1; | |
89840df0 | 969 | #endif |
43c02e7b VB |
970 | |
971 | /* Set TTL */ | |
77507b69 | 972 | lchassis->c_ttl = LLDPD_TTL; |
43c02e7b VB |
973 | |
974 | cfg->g_protocols = protos; | |
43c02e7b | 975 | for (i=0; protos[i].mode != 0; i++) |
0c877af0 VB |
976 | if (protos[i].enabled > 1) |
977 | LLOG_INFO("protocol %s enabled and forced", protos[i].name); | |
978 | else if (protos[i].enabled) | |
43c02e7b | 979 | LLOG_INFO("protocol %s enabled", protos[i].name); |
0c877af0 | 980 | else |
43c02e7b | 981 | LLOG_INFO("protocol %s disabled", protos[i].name); |
43c02e7b VB |
982 | |
983 | TAILQ_INIT(&cfg->g_hardware); | |
77507b69 VB |
984 | TAILQ_INIT(&cfg->g_chassis); |
985 | TAILQ_INSERT_TAIL(&cfg->g_chassis, lchassis, c_entries); | |
9898ac07 | 986 | lchassis->c_refcount++; /* We should always keep a reference to local chassis */ |
43c02e7b | 987 | |
77d7090e VB |
988 | TAILQ_INIT(&cfg->g_callbacks); |
989 | ||
43c02e7b VB |
990 | #ifdef USE_SNMP |
991 | if (snmp) { | |
992 | cfg->g_snmp = 1; | |
bbea66e1 | 993 | agent_init(cfg, agentx, debug); |
43c02e7b VB |
994 | } |
995 | #endif /* USE_SNMP */ | |
996 | ||
997 | /* Create socket */ | |
6f1046d1 | 998 | if ((cfg->g_ctl = priv_ctl_create()) == -1) |
b5562b23 | 999 | fatalx("unable to create control socket " LLDPD_CTL_SOCKET); |
77d7090e VB |
1000 | if (lldpd_callback_add(cfg, cfg->g_ctl, ctl_accept, NULL) != 0) |
1001 | fatalx("unable to add callback for control socket"); | |
43c02e7b | 1002 | |
43c02e7b VB |
1003 | gcfg = cfg; |
1004 | if (atexit(lldpd_exit) != 0) { | |
b5562b23 VB |
1005 | close(cfg->g_ctl); |
1006 | priv_ctl_cleanup(); | |
43c02e7b VB |
1007 | fatal("unable to set exit function"); |
1008 | } | |
43c02e7b VB |
1009 | |
1010 | /* Signal handling */ | |
b5562b23 | 1011 | signal(SIGHUP, lldpd_shutdown); |
43c02e7b VB |
1012 | signal(SIGINT, lldpd_shutdown); |
1013 | signal(SIGTERM, lldpd_shutdown); | |
1014 | ||
1015 | for (;;) | |
1016 | lldpd_loop(cfg); | |
1017 | ||
1018 | return (0); | |
1019 | } |