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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 | #ifndef _LLDPD_H | |
18 | #define _LLDPD_H | |
19 | ||
20 | #if HAVE_CONFIG_H | |
21 | #include <config.h> | |
22 | #endif | |
23 | ||
24 | #define _GNU_SOURCE 1 | |
25 | #include <stdlib.h> | |
26 | #include <string.h> | |
27 | #include <sys/queue.h> | |
28 | #ifndef INCLUDE_LINUX_IF_H | |
29 | #include <net/if.h> | |
30 | #else | |
31 | #include <arpa/inet.h> | |
32 | #include <linux/if.h> | |
33 | #endif | |
34 | #include <net/ethernet.h> | |
35 | #include <netinet/in.h> | |
4afe659e | 36 | #include <linux/ethtool.h> |
43c02e7b VB |
37 | |
38 | #include "compat.h" | |
39 | #include "lldp.h" | |
4bad1937 | 40 | #if defined (ENABLE_CDP) || defined (ENABLE_FDP) |
43c02e7b | 41 | #include "cdp.h" |
4bad1937 VB |
42 | #endif |
43 | #ifdef ENABLE_SONMP | |
43c02e7b | 44 | #include "sonmp.h" |
4bad1937 VB |
45 | #endif |
46 | #ifdef ENABLE_EDP | |
43c02e7b | 47 | #include "edp.h" |
4bad1937 | 48 | #endif |
43c02e7b | 49 | |
89840df0 VB |
50 | #define SYSFS_CLASS_NET "/sys/class/net/" |
51 | #define SYSFS_CLASS_DMI "/sys/class/dmi/id/" | |
43c02e7b VB |
52 | #define LLDPD_TTL 120 |
53 | #define LLDPD_TX_DELAY 30 | |
54 | #define LLDPD_TX_MSGDELAY 1 | |
55 | #define LLDPD_CTL_SOCKET "/var/run/lldpd.socket" | |
56 | #define LLDPD_PID_FILE "/var/run/lldpd.pid" | |
57 | ||
58 | #define UNIX_PATH_MAX 108 | |
59 | ||
60 | #define USING_AGENTX_SUBAGENT_MODULE 1 | |
61 | ||
62 | struct lldpd_vlan { | |
63 | TAILQ_ENTRY(lldpd_vlan) v_entries; | |
64 | char *v_name; | |
65 | u_int16_t v_vid; | |
66 | }; | |
67 | #define STRUCT_LLDPD_VLAN "Lsw" | |
68 | ||
69 | struct lldpd_chassis { | |
70 | u_int8_t c_id_subtype; | |
71 | char *c_id; | |
72 | int c_id_len; | |
73 | char *c_name; | |
74 | char *c_descr; | |
75 | ||
76 | u_int16_t c_cap_available; | |
77 | u_int16_t c_cap_enabled; | |
78 | ||
79 | u_int16_t c_ttl; | |
80 | ||
81 | struct in_addr c_mgmt; | |
82 | u_int32_t c_mgmt_if; | |
89840df0 VB |
83 | |
84 | #ifdef ENABLE_LLDPMED | |
85 | u_int16_t c_med_cap; | |
86 | u_int8_t c_med_type; | |
87 | char *c_med_hw; | |
88 | char *c_med_fw; | |
89 | char *c_med_sw; | |
90 | char *c_med_sn; | |
91 | char *c_med_manuf; | |
92 | char *c_med_model; | |
93 | char *c_med_asset; | |
94 | #endif | |
95 | ||
43c02e7b | 96 | }; |
6772b237 | 97 | #ifndef ENABLE_LLDPMED |
43c02e7b | 98 | #define STRUCT_LLDPD_CHASSIS "bCsswwwll" |
89840df0 VB |
99 | #else |
100 | #define STRUCT_LLDPD_CHASSIS "bCsswwwllwbsssssss" | |
101 | #endif | |
43c02e7b VB |
102 | |
103 | struct lldpd_port { | |
104 | u_int8_t p_id_subtype; | |
105 | char *p_id; | |
106 | int p_id_len; | |
107 | char *p_descr; | |
108 | ||
109 | /* Dot3 stuff */ | |
110 | u_int32_t p_aggregid; | |
111 | u_int8_t p_autoneg_support; | |
112 | u_int8_t p_autoneg_enabled; | |
113 | u_int16_t p_autoneg_advertised; | |
114 | u_int16_t p_mau_type; | |
115 | ||
116 | TAILQ_HEAD(, lldpd_vlan) p_vlans; | |
117 | }; | |
118 | #define STRUCT_LLDPD_PORT "bCslbbwwPP" | |
119 | ||
120 | struct lldpd_frame { | |
121 | int size; | |
122 | unsigned char frame[]; | |
123 | }; | |
124 | ||
125 | struct lldpd_hardware { | |
126 | TAILQ_ENTRY(lldpd_hardware) h_entries; | |
127 | ||
128 | #define INTERFACE_OPENED(x) ((x)->h_raw != -1) | |
129 | ||
130 | int h_raw; | |
131 | int h_raw_real; /* For bonding */ | |
132 | int h_master; /* For bonding */ | |
133 | ||
134 | #define LLDPD_MODE_ANY 0 | |
135 | #define LLDPD_MODE_LLDP 1 | |
136 | #define LLDPD_MODE_CDPV1 2 | |
137 | #define LLDPD_MODE_CDPV2 3 | |
138 | #define LLDPD_MODE_SONMP 4 | |
139 | #define LLDPD_MODE_EDP 5 | |
031118c4 | 140 | #define LLDPD_MODE_FDP 6 |
43c02e7b VB |
141 | int h_mode; |
142 | ||
143 | int h_flags; | |
144 | int h_mtu; | |
145 | char h_ifname[IFNAMSIZ]; | |
146 | u_int8_t h_lladdr[ETHER_ADDR_LEN]; | |
147 | ||
148 | u_int64_t h_tx_cnt; | |
149 | u_int64_t h_rx_cnt; | |
150 | u_int64_t h_rx_discarded_cnt; | |
151 | u_int64_t h_rx_ageout_cnt; | |
37387046 | 152 | u_int64_t h_rx_unrecognized_cnt; |
43c02e7b VB |
153 | |
154 | u_int8_t *h_proto_macs; | |
155 | time_t h_start_probe; | |
156 | ||
157 | struct lldpd_port h_lport; | |
158 | time_t h_llastchange; | |
159 | struct lldpd_frame *h_llastframe; | |
160 | ||
161 | time_t h_rlastchange; | |
162 | time_t h_rlastupdate; | |
163 | int h_rid; | |
164 | struct lldpd_frame *h_rlastframe; | |
165 | struct lldpd_port *h_rport; | |
166 | struct lldpd_chassis *h_rchassis; | |
167 | }; | |
168 | ||
50a89ca7 VB |
169 | /* lldpd_vif can be casted to lldpd_hardware on some cases */ |
170 | struct lldpd_vif { | |
171 | TAILQ_ENTRY(lldpd_vif) vif_entries; | |
172 | int vif_raw; | |
173 | int vif_raw_real; /* Not used */ | |
174 | int vif_master; /* Not used */ | |
175 | int vif_mode; /* Not used */ | |
176 | int vif_flags; | |
177 | int vif_mtu; | |
178 | char vif_ifname[IFNAMSIZ]; | |
179 | ||
180 | /* No more compatibility with struct lldpd_hardware from here */ | |
181 | struct lldpd_hardware *vif_real; | |
182 | }; | |
183 | ||
43c02e7b VB |
184 | struct lldpd_interface { |
185 | TAILQ_ENTRY(lldpd_interface) next; | |
186 | char *name; | |
187 | }; | |
188 | #define STRUCT_LLDPD_INTERFACE "Ls" | |
189 | ||
190 | struct lldpd_client { | |
191 | TAILQ_ENTRY(lldpd_client) next; | |
192 | int fd; | |
193 | }; | |
194 | ||
195 | #define PROTO_SEND_SIG struct lldpd *, struct lldpd_chassis *, struct lldpd_hardware * | |
196 | #define PROTO_DECODE_SIG struct lldpd *, char *, int, struct lldpd_hardware *, struct lldpd_chassis **, struct lldpd_port ** | |
197 | #define PROTO_GUESS_SIG char *, int | |
198 | ||
199 | struct lldpd; | |
200 | struct protocol { | |
201 | int mode; /* > 0 mode identifier (unique per protocol) */ | |
202 | int enabled; /* Is this protocol enabled? */ | |
203 | char *name; /* Name of protocol */ | |
204 | char arg; /* Argument to enable this protocol */ | |
205 | int(*send)(PROTO_SEND_SIG); /* How to send a frame */ | |
206 | int(*decode)(PROTO_DECODE_SIG); /* How to decode a frame */ | |
207 | int(*guess)(PROTO_GUESS_SIG); /* Can be NULL, use MAC address in this case */ | |
208 | u_int8_t mac[ETH_ALEN]; /* Destination MAC address used by this protocol */ | |
209 | struct sock_filter *filter; /* BPF filter */ | |
210 | size_t filterlen; /* Size of BPF filter */ | |
211 | }; | |
212 | ||
213 | struct lldpd { | |
214 | int g_sock; | |
215 | int g_delay; | |
216 | ||
217 | struct protocol *g_protocols; | |
218 | int g_multi; /* Set to 1 if multiple protocols */ | |
219 | int g_probe_time; | |
766f32b3 | 220 | int g_listen_vlans; |
43c02e7b VB |
221 | |
222 | time_t g_lastsent; | |
223 | int g_lastrid; | |
224 | #ifdef USE_SNMP | |
225 | int g_snmp; | |
226 | #endif /* USE_SNMP */ | |
227 | ||
228 | /* Unix socket handling */ | |
229 | int g_ctl; | |
230 | TAILQ_HEAD(, lldpd_client) g_clients; | |
231 | ||
232 | char *g_mgmt_pattern; | |
233 | ||
234 | struct lldpd_chassis g_lchassis; | |
235 | ||
236 | TAILQ_HEAD(, lldpd_hardware) g_hardware; | |
50a89ca7 | 237 | TAILQ_HEAD(, lldpd_vif) g_vif; |
43c02e7b VB |
238 | }; |
239 | ||
240 | enum hmsg_type { | |
241 | HMSG_NONE, | |
242 | HMSG_GET_INTERFACES, | |
243 | HMSG_GET_CHASSIS, | |
244 | HMSG_GET_PORT, | |
245 | HMSG_GET_VLANS, | |
246 | HMSG_SHUTDOWN | |
247 | }; | |
248 | ||
249 | struct hmsg_hdr { | |
250 | enum hmsg_type type; | |
251 | int16_t len; | |
252 | pid_t pid; | |
253 | } __attribute__ ((__packed__)); | |
254 | ||
255 | struct hmsg { | |
256 | struct hmsg_hdr hdr; | |
257 | void *data; | |
258 | } __attribute__ ((__packed__)); | |
259 | ||
260 | #define HMSG_HEADER_SIZE sizeof(struct hmsg_hdr) | |
261 | #define MAX_HMSGSIZE 8192 | |
262 | ||
263 | /* lldpd.c */ | |
264 | void lldpd_cleanup(struct lldpd *); | |
265 | void lldpd_vlan_cleanup(struct lldpd_port *); | |
266 | void lldpd_remote_cleanup(struct lldpd *, struct lldpd_hardware *, int); | |
267 | void lldpd_port_cleanup(struct lldpd_port *); | |
268 | void lldpd_chassis_cleanup(struct lldpd_chassis *); | |
269 | ||
270 | /* lldp.c */ | |
271 | int lldp_send(PROTO_SEND_SIG); | |
272 | int lldp_decode(PROTO_DECODE_SIG); | |
273 | ||
274 | /* cdp.c */ | |
4bad1937 | 275 | #ifdef ENABLE_CDP |
43c02e7b VB |
276 | int cdpv1_send(PROTO_SEND_SIG); |
277 | int cdpv2_send(PROTO_SEND_SIG); | |
43c02e7b VB |
278 | int cdpv1_guess(PROTO_GUESS_SIG); |
279 | int cdpv2_guess(PROTO_GUESS_SIG); | |
4bad1937 VB |
280 | #endif |
281 | #if defined (ENABLE_CDP) || defined (ENABLE_FDP) | |
282 | int cdp_decode(PROTO_DECODE_SIG); | |
283 | #endif | |
284 | #ifdef ENABLE_FDP | |
285 | int fdp_send(PROTO_SEND_SIG); | |
286 | #endif | |
43c02e7b | 287 | |
4bad1937 | 288 | #ifdef ENABLE_SONMP |
43c02e7b VB |
289 | /* sonmp.c */ |
290 | int sonmp_send(PROTO_SEND_SIG); | |
291 | int sonmp_decode(PROTO_DECODE_SIG); | |
4bad1937 | 292 | #endif |
43c02e7b | 293 | |
4bad1937 | 294 | #ifdef ENABLE_EDP |
43c02e7b VB |
295 | /* edp.c */ |
296 | int edp_send(PROTO_SEND_SIG); | |
297 | int edp_decode(PROTO_DECODE_SIG); | |
4bad1937 | 298 | #endif |
43c02e7b VB |
299 | |
300 | /* ctl.c */ | |
b5562b23 | 301 | int ctl_create(char *); |
43c02e7b | 302 | int ctl_connect(char *); |
b5562b23 | 303 | void ctl_cleanup(char *); |
43c02e7b VB |
304 | int ctl_accept(struct lldpd *, int); |
305 | int ctl_close(struct lldpd *, int); | |
306 | void ctl_msg_init(struct hmsg *, enum hmsg_type); | |
307 | int ctl_msg_send(int, struct hmsg *); | |
308 | int ctl_msg_recv(int, struct hmsg *); | |
309 | int ctl_msg_pack_list(char *, void *, unsigned int, struct hmsg *, void **); | |
310 | int ctl_msg_unpack_list(char *, void *, unsigned int, struct hmsg *, void **); | |
311 | int ctl_msg_pack_structure(char *, void *, unsigned int, struct hmsg *, void **); | |
312 | int ctl_msg_unpack_structure(char *, void *, unsigned int, struct hmsg *, void **); | |
313 | ||
314 | /* features.c */ | |
315 | int iface_is_bridge(struct lldpd *, const char *); | |
316 | int iface_is_bridged(struct lldpd *, const char *); | |
317 | int iface_is_wireless(struct lldpd *, const char *); | |
318 | int iface_is_vlan(struct lldpd *, const char *); | |
319 | int iface_is_bond(struct lldpd *, const char *); | |
320 | int iface_is_bond_slave(struct lldpd *, | |
321 | const char *, const char *); | |
322 | int iface_is_enslaved(struct lldpd *, const char *); | |
89840df0 VB |
323 | #ifdef ENABLE_LLDPMED |
324 | char *dmi_hw(); | |
325 | char *dmi_fw(); | |
326 | char *dmi_sn(); | |
327 | char *dmi_manuf(); | |
328 | char *dmi_model(); | |
329 | char *dmi_asset(); | |
330 | #endif | |
43c02e7b VB |
331 | |
332 | /* log.c */ | |
333 | void log_init(int); | |
334 | void log_warn(const char *, ...); | |
335 | #define LLOG_WARN(x,...) log_warn("%s: " x, __FUNCTION__, ##__VA_ARGS__) | |
336 | void log_warnx(const char *, ...); | |
337 | #define LLOG_WARNX(x,...) log_warnx("%s: " x, __FUNCTION__, ##__VA_ARGS__) | |
338 | void log_info(const char *, ...); | |
339 | #define LLOG_INFO(x,...) log_info("%s: " x, __FUNCTION__, ##__VA_ARGS__) | |
340 | void log_debug(const char *, ...); | |
341 | #define LLOG_DEBUG(x,...) log_debug("%s: " x, __FUNCTION__, ##__VA_ARGS__) | |
342 | void fatal(const char *); | |
343 | void fatalx(const char *); | |
344 | ||
345 | /* agent.c */ | |
346 | void agent_shutdown(); | |
347 | void agent_init(struct lldpd *, int); | |
348 | ||
d72a05d4 VB |
349 | /* agent_priv.c */ |
350 | void agent_priv_register_domain(); | |
351 | ||
43c02e7b VB |
352 | /* strlcpy.c */ |
353 | size_t strlcpy(char *, const char *, size_t); | |
354 | ||
355 | /* iov.c */ | |
356 | void iov_dump(struct lldpd_frame **, struct iovec *, int); | |
357 | u_int16_t iov_checksum(struct iovec *, int, int); | |
358 | ||
a552a72e VB |
359 | /* client.c */ |
360 | struct client_handle { | |
361 | enum hmsg_type type; | |
362 | void (*handle)(struct lldpd*, struct hmsg*, struct hmsg*); | |
363 | }; | |
364 | ||
365 | void client_handle_client(struct lldpd *, struct lldpd_client *, | |
366 | char *, int); | |
367 | void client_handle_none(struct lldpd *, struct hmsg *, | |
368 | struct hmsg *); | |
369 | void client_handle_get_interfaces(struct lldpd *, struct hmsg *, | |
370 | struct hmsg *); | |
371 | void client_handle_get_port_related(struct lldpd *, struct hmsg *, | |
372 | struct hmsg *); | |
373 | void client_handle_shutdown(struct lldpd *, struct hmsg *, | |
374 | struct hmsg *); | |
375 | ||
b5562b23 | 376 | /* priv.c */ |
a2993d83 | 377 | void priv_init(char*); |
a7502371 VB |
378 | int priv_ctl_create(); |
379 | void priv_ctl_cleanup(); | |
380 | char *priv_gethostbyname(); | |
381 | int priv_open(char*); | |
382 | int priv_ethtool(char*, struct ethtool_cmd*); | |
383 | int priv_iface_init(struct lldpd_hardware *, int); | |
384 | int priv_iface_multicast(char *, u_int8_t *, int); | |
d72a05d4 | 385 | int priv_snmp_socket(struct sockaddr_un *); |
4afe659e VB |
386 | |
387 | /* privsep_fdpass.c */ | |
388 | int receive_fd(int); | |
389 | void send_fd(int, int); | |
b5562b23 | 390 | |
43c02e7b | 391 | #endif /* _LLDPD_H */ |