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718e3744 | 1 | /* BGP4 SNMP support |
2 | Copyright (C) 1999, 2000 Kunihiro Ishiguro | |
3 | ||
4 | This file is part of GNU Zebra. | |
5 | ||
6 | GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU General Public License as published by the | |
8 | Free Software Foundation; either version 2, or (at your option) any | |
9 | later version. | |
10 | ||
11 | GNU Zebra is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Zebra; see the file COPYING. If not, write to the Free | |
18 | Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
19 | 02111-1307, USA. */ | |
20 | ||
21 | #include <zebra.h> | |
22 | ||
23 | #ifdef HAVE_SNMP | |
07661cb5 | 24 | #include <net-snmp/net-snmp-config.h> |
fb62a3ce | 25 | #include <net-snmp/net-snmp-includes.h> |
718e3744 | 26 | |
27 | #include "if.h" | |
28 | #include "log.h" | |
29 | #include "prefix.h" | |
30 | #include "command.h" | |
31 | #include "thread.h" | |
32 | #include "smux.h" | |
33 | ||
34 | #include "bgpd/bgpd.h" | |
35 | #include "bgpd/bgp_table.h" | |
36 | #include "bgpd/bgp_aspath.h" | |
37 | #include "bgpd/bgp_attr.h" | |
38 | #include "bgpd/bgp_route.h" | |
39 | #include "bgpd/bgp_fsm.h" | |
0be8dfb2 | 40 | #include "bgpd/bgp_snmp.h" |
718e3744 | 41 | \f |
42 | /* BGP4-MIB described in RFC1657. */ | |
43 | #define BGP4MIB 1,3,6,1,2,1,15 | |
44 | ||
020709f9 | 45 | /* BGP TRAP. */ |
46 | #define BGPESTABLISHED 1 | |
47 | #define BGPBACKWARDTRANSITION 2 | |
48 | ||
718e3744 | 49 | /* BGP MIB bgpVersion. */ |
50 | #define BGPVERSION 0 | |
51 | ||
52 | /* BGP MIB bgpLocalAs. */ | |
53 | #define BGPLOCALAS 0 | |
54 | ||
55 | /* BGP MIB bgpPeerTable. */ | |
56 | #define BGPPEERIDENTIFIER 1 | |
57 | #define BGPPEERSTATE 2 | |
58 | #define BGPPEERADMINSTATUS 3 | |
59 | #define BGPPEERNEGOTIATEDVERSION 4 | |
60 | #define BGPPEERLOCALADDR 5 | |
61 | #define BGPPEERLOCALPORT 6 | |
62 | #define BGPPEERREMOTEADDR 7 | |
63 | #define BGPPEERREMOTEPORT 8 | |
64 | #define BGPPEERREMOTEAS 9 | |
65 | #define BGPPEERINUPDATES 10 | |
66 | #define BGPPEEROUTUPDATES 11 | |
67 | #define BGPPEERINTOTALMESSAGES 12 | |
68 | #define BGPPEEROUTTOTALMESSAGES 13 | |
69 | #define BGPPEERLASTERROR 14 | |
70 | #define BGPPEERFSMESTABLISHEDTRANSITIONS 15 | |
71 | #define BGPPEERFSMESTABLISHEDTIME 16 | |
72 | #define BGPPEERCONNECTRETRYINTERVAL 17 | |
73 | #define BGPPEERHOLDTIME 18 | |
74 | #define BGPPEERKEEPALIVE 19 | |
75 | #define BGPPEERHOLDTIMECONFIGURED 20 | |
76 | #define BGPPEERKEEPALIVECONFIGURED 21 | |
77 | #define BGPPEERMINASORIGINATIONINTERVAL 22 | |
78 | #define BGPPEERMINROUTEADVERTISEMENTINTERVAL 23 | |
79 | #define BGPPEERINUPDATEELAPSEDTIME 24 | |
80 | ||
81 | /* BGP MIB bgpIdentifier. */ | |
82 | #define BGPIDENTIFIER 0 | |
83 | ||
84 | /* BGP MIB bgpRcvdPathAttrTable */ | |
85 | #define BGPPATHATTRPEER 1 | |
86 | #define BGPPATHATTRDESTNETWORK 2 | |
87 | #define BGPPATHATTRORIGIN 3 | |
88 | #define BGPPATHATTRASPATH 4 | |
89 | #define BGPPATHATTRNEXTHOP 5 | |
90 | #define BGPPATHATTRINTERASMETRIC 6 | |
91 | ||
92 | /* BGP MIB bgp4PathAttrTable. */ | |
93 | #define BGP4PATHATTRPEER 1 | |
94 | #define BGP4PATHATTRIPADDRPREFIXLEN 2 | |
95 | #define BGP4PATHATTRIPADDRPREFIX 3 | |
96 | #define BGP4PATHATTRORIGIN 4 | |
97 | #define BGP4PATHATTRASPATHSEGMENT 5 | |
98 | #define BGP4PATHATTRNEXTHOP 6 | |
99 | #define BGP4PATHATTRMULTIEXITDISC 7 | |
100 | #define BGP4PATHATTRLOCALPREF 8 | |
101 | #define BGP4PATHATTRATOMICAGGREGATE 9 | |
102 | #define BGP4PATHATTRAGGREGATORAS 10 | |
103 | #define BGP4PATHATTRAGGREGATORADDR 11 | |
104 | #define BGP4PATHATTRCALCLOCALPREF 12 | |
105 | #define BGP4PATHATTRBEST 13 | |
106 | #define BGP4PATHATTRUNKNOWN 14 | |
107 | ||
108 | /* SNMP value hack. */ | |
109 | #define INTEGER ASN_INTEGER | |
110 | #define INTEGER32 ASN_INTEGER | |
111 | #define COUNTER32 ASN_COUNTER | |
112 | #define OCTET_STRING ASN_OCTET_STR | |
113 | #define IPADDRESS ASN_IPADDRESS | |
114 | #define GAUGE32 ASN_UNSIGNED | |
115 | \f | |
116 | /* Declare static local variables for convenience. */ | |
117 | SNMP_LOCAL_VARIABLES | |
118 | ||
119 | /* BGP-MIB instances. */ | |
120 | oid bgp_oid [] = { BGP4MIB }; | |
b7c0d065 | 121 | oid bgp_trap_oid [] = { BGP4MIB, 0 }; |
718e3744 | 122 | |
123 | /* IP address 0.0.0.0. */ | |
124 | static struct in_addr bgp_empty_addr = {0}; | |
125 | ||
126 | /* Hook functions. */ | |
0be8dfb2 CC |
127 | static u_char *bgpVersion (struct variable *, oid [], size_t *, int, |
128 | size_t *, WriteMethod **); | |
129 | static u_char *bgpLocalAs (struct variable *, oid [], size_t *, | |
130 | int, size_t *, WriteMethod **); | |
131 | static u_char *bgpPeerTable (struct variable *, oid [], size_t *, | |
132 | int, size_t *, WriteMethod **); | |
133 | static u_char *bgpRcvdPathAttrTable (struct variable *, oid [], size_t *, | |
134 | int, size_t *, WriteMethod **); | |
135 | static u_char *bgpIdentifier (struct variable *, oid [], size_t *, | |
136 | int, size_t *, WriteMethod **); | |
137 | static u_char *bgp4PathAttrTable (struct variable *, oid [], size_t *, | |
138 | int, size_t *, WriteMethod **); | |
718e3744 | 139 | /* static u_char *bgpTraps (); */ |
140 | ||
141 | struct variable bgp_variables[] = | |
142 | { | |
143 | /* BGP version. */ | |
144 | {BGPVERSION, OCTET_STRING, RONLY, bgpVersion, | |
145 | 1, {1}}, | |
146 | /* BGP local AS. */ | |
147 | {BGPLOCALAS, INTEGER, RONLY, bgpLocalAs, | |
148 | 1, {2}}, | |
149 | /* BGP peer table. */ | |
150 | {BGPPEERIDENTIFIER, IPADDRESS, RONLY, bgpPeerTable, | |
151 | 3, {3, 1, 1}}, | |
152 | {BGPPEERSTATE, INTEGER, RONLY, bgpPeerTable, | |
153 | 3, {3, 1, 2}}, | |
154 | {BGPPEERADMINSTATUS, INTEGER, RWRITE, bgpPeerTable, | |
155 | 3, {3, 1, 3}}, | |
156 | {BGPPEERNEGOTIATEDVERSION, INTEGER32, RONLY, bgpPeerTable, | |
157 | 3, {3, 1, 4}}, | |
158 | {BGPPEERLOCALADDR, IPADDRESS, RONLY, bgpPeerTable, | |
159 | 3, {3, 1, 5}}, | |
160 | {BGPPEERLOCALPORT, INTEGER, RONLY, bgpPeerTable, | |
161 | 3, {3, 1, 6}}, | |
162 | {BGPPEERREMOTEADDR, IPADDRESS, RONLY, bgpPeerTable, | |
163 | 3, {3, 1, 7}}, | |
164 | {BGPPEERREMOTEPORT, INTEGER, RONLY, bgpPeerTable, | |
165 | 3, {3, 1, 8}}, | |
166 | {BGPPEERREMOTEAS, INTEGER, RONLY, bgpPeerTable, | |
167 | 3, {3, 1, 9}}, | |
168 | {BGPPEERINUPDATES, COUNTER32, RONLY, bgpPeerTable, | |
169 | 3, {3, 1, 10}}, | |
170 | {BGPPEEROUTUPDATES, COUNTER32, RONLY, bgpPeerTable, | |
171 | 3, {3, 1, 11}}, | |
172 | {BGPPEERINTOTALMESSAGES, COUNTER32, RONLY, bgpPeerTable, | |
173 | 3, {3, 1, 12}}, | |
174 | {BGPPEEROUTTOTALMESSAGES, COUNTER32, RONLY, bgpPeerTable, | |
175 | 3, {3, 1, 13}}, | |
176 | {BGPPEERLASTERROR, OCTET_STRING, RONLY, bgpPeerTable, | |
177 | 3, {3, 1, 14}}, | |
178 | {BGPPEERFSMESTABLISHEDTRANSITIONS, COUNTER32, RONLY, bgpPeerTable, | |
179 | 3, {3, 1, 15}}, | |
180 | {BGPPEERFSMESTABLISHEDTIME, GAUGE32, RONLY, bgpPeerTable, | |
181 | 3, {3, 1, 16}}, | |
182 | {BGPPEERCONNECTRETRYINTERVAL, INTEGER, RWRITE, bgpPeerTable, | |
183 | 3, {3, 1, 17}}, | |
184 | {BGPPEERHOLDTIME, INTEGER, RONLY, bgpPeerTable, | |
185 | 3, {3, 1, 18}}, | |
186 | {BGPPEERKEEPALIVE, INTEGER, RONLY, bgpPeerTable, | |
187 | 3, {3, 1, 19}}, | |
188 | {BGPPEERHOLDTIMECONFIGURED, INTEGER, RWRITE, bgpPeerTable, | |
189 | 3, {3, 1, 20}}, | |
190 | {BGPPEERKEEPALIVECONFIGURED, INTEGER, RWRITE, bgpPeerTable, | |
191 | 3, {3, 1, 21}}, | |
192 | {BGPPEERMINASORIGINATIONINTERVAL, INTEGER, RWRITE, bgpPeerTable, | |
193 | 3, {3, 1, 22}}, | |
194 | {BGPPEERMINROUTEADVERTISEMENTINTERVAL, INTEGER, RWRITE, bgpPeerTable, | |
195 | 3, {3, 1, 23}}, | |
196 | {BGPPEERINUPDATEELAPSEDTIME, GAUGE32, RONLY, bgpPeerTable, | |
197 | 3, {3, 1, 24}}, | |
198 | /* BGP identifier. */ | |
199 | {BGPIDENTIFIER, IPADDRESS, RONLY, bgpIdentifier, | |
200 | 1, {4}}, | |
201 | /* BGP received path attribute table. */ | |
202 | {BGPPATHATTRPEER, IPADDRESS, RONLY, bgpRcvdPathAttrTable, | |
203 | 3, {5, 1, 1}}, | |
204 | {BGPPATHATTRDESTNETWORK, IPADDRESS, RONLY, bgpRcvdPathAttrTable, | |
205 | 3, {5, 1, 2}}, | |
206 | {BGPPATHATTRORIGIN, INTEGER, RONLY, bgpRcvdPathAttrTable, | |
207 | 3, {5, 1, 3}}, | |
208 | {BGPPATHATTRASPATH, OCTET_STRING, RONLY, bgpRcvdPathAttrTable, | |
209 | 3, {5, 1, 4}}, | |
210 | {BGPPATHATTRNEXTHOP, IPADDRESS, RONLY, bgpRcvdPathAttrTable, | |
211 | 3, {5, 1, 5}}, | |
212 | {BGPPATHATTRINTERASMETRIC, INTEGER32, RONLY, bgpRcvdPathAttrTable, | |
213 | 3, {5, 1, 6}}, | |
214 | /* BGP-4 received path attribute table. */ | |
215 | {BGP4PATHATTRPEER, IPADDRESS, RONLY, bgp4PathAttrTable, | |
216 | 3, {6, 1, 1}}, | |
217 | {BGP4PATHATTRIPADDRPREFIXLEN, INTEGER, RONLY, bgp4PathAttrTable, | |
218 | 3, {6, 1, 2}}, | |
219 | {BGP4PATHATTRIPADDRPREFIX, IPADDRESS, RONLY, bgp4PathAttrTable, | |
220 | 3, {6, 1, 3}}, | |
221 | {BGP4PATHATTRORIGIN, INTEGER, RONLY, bgp4PathAttrTable, | |
222 | 3, {6, 1, 4}}, | |
223 | {BGP4PATHATTRASPATHSEGMENT, OCTET_STRING, RONLY, bgp4PathAttrTable, | |
224 | 3, {6, 1, 5}}, | |
225 | {BGP4PATHATTRNEXTHOP, IPADDRESS, RONLY, bgp4PathAttrTable, | |
226 | 3, {6, 1, 6}}, | |
227 | {BGP4PATHATTRMULTIEXITDISC, INTEGER, RONLY, bgp4PathAttrTable, | |
228 | 3, {6, 1, 7}}, | |
229 | {BGP4PATHATTRLOCALPREF, INTEGER, RONLY, bgp4PathAttrTable, | |
230 | 3, {6, 1, 8}}, | |
231 | {BGP4PATHATTRATOMICAGGREGATE, INTEGER, RONLY, bgp4PathAttrTable, | |
232 | 3, {6, 1, 9}}, | |
233 | {BGP4PATHATTRAGGREGATORAS, INTEGER, RONLY, bgp4PathAttrTable, | |
234 | 3, {6, 1, 10}}, | |
235 | {BGP4PATHATTRAGGREGATORADDR, IPADDRESS, RONLY, bgp4PathAttrTable, | |
236 | 3, {6, 1, 11}}, | |
237 | {BGP4PATHATTRCALCLOCALPREF, INTEGER, RONLY, bgp4PathAttrTable, | |
238 | 3, {6, 1, 12}}, | |
239 | {BGP4PATHATTRBEST, INTEGER, RONLY, bgp4PathAttrTable, | |
240 | 3, {6, 1, 13}}, | |
241 | {BGP4PATHATTRUNKNOWN, OCTET_STRING, RONLY, bgp4PathAttrTable, | |
242 | 3, {6, 1, 14}}, | |
243 | }; | |
dd488a78 | 244 | |
718e3744 | 245 | \f |
246 | static u_char * | |
247 | bgpVersion (struct variable *v, oid name[], size_t *length, int exact, | |
248 | size_t *var_len, WriteMethod **write_method) | |
249 | { | |
250 | static u_char version; | |
251 | ||
252 | if (smux_header_generic(v, name, length, exact, var_len, write_method) | |
253 | == MATCH_FAILED) | |
254 | return NULL; | |
255 | ||
256 | /* Retrun BGP version. Zebra bgpd only support version 4. */ | |
257 | version = (0x80 >> (BGP_VERSION_4 - 1)); | |
258 | ||
259 | /* Return octet string length 1. */ | |
260 | *var_len = 1; | |
261 | return (u_char *)&version; | |
262 | } | |
263 | ||
264 | static u_char * | |
265 | bgpLocalAs (struct variable *v, oid name[], size_t *length, | |
266 | int exact, size_t *var_len, WriteMethod **write_method) | |
267 | { | |
268 | struct bgp *bgp; | |
269 | ||
270 | if (smux_header_generic(v, name, length, exact, var_len, write_method) | |
271 | == MATCH_FAILED) | |
272 | return NULL; | |
273 | ||
274 | /* Get BGP structure. */ | |
275 | bgp = bgp_get_default (); | |
276 | if (! bgp) | |
277 | return NULL; | |
278 | ||
279 | return SNMP_INTEGER (bgp->as); | |
280 | } | |
281 | ||
0be8dfb2 | 282 | static struct peer * |
718e3744 | 283 | peer_lookup_addr_ipv4 (struct in_addr *src) |
284 | { | |
285 | struct bgp *bgp; | |
286 | struct peer *peer; | |
1eb8ef25 | 287 | struct listnode *node; |
718e3744 | 288 | struct in_addr addr; |
289 | int ret; | |
290 | ||
291 | bgp = bgp_get_default (); | |
292 | if (! bgp) | |
293 | return NULL; | |
294 | ||
1eb8ef25 | 295 | for (ALL_LIST_ELEMENTS_RO (bgp->peer, node, peer)) |
718e3744 | 296 | { |
297 | ret = inet_pton (AF_INET, peer->host, &addr); | |
298 | if (ret > 0) | |
299 | { | |
300 | if (IPV4_ADDR_SAME (&addr, src)) | |
301 | return peer; | |
302 | } | |
303 | } | |
304 | return NULL; | |
305 | } | |
306 | ||
0be8dfb2 | 307 | static struct peer * |
718e3744 | 308 | bgp_peer_lookup_next (struct in_addr *src) |
309 | { | |
310 | struct bgp *bgp; | |
311 | struct peer *peer; | |
1eb8ef25 | 312 | struct listnode *node; |
718e3744 | 313 | struct in_addr *p; |
314 | union sockunion su; | |
315 | int ret; | |
316 | ||
317 | memset (&su, 0, sizeof (union sockunion)); | |
318 | ||
319 | bgp = bgp_get_default (); | |
320 | if (! bgp) | |
321 | return NULL; | |
322 | ||
1eb8ef25 | 323 | for (ALL_LIST_ELEMENTS_RO (bgp->peer, node, peer)) |
718e3744 | 324 | { |
325 | ret = inet_pton (AF_INET, peer->host, &su.sin.sin_addr); | |
326 | if (ret > 0) | |
327 | { | |
328 | p = &su.sin.sin_addr; | |
329 | ||
330 | if (ntohl (p->s_addr) > ntohl (src->s_addr)) | |
331 | { | |
332 | src->s_addr = p->s_addr; | |
333 | return peer; | |
334 | } | |
335 | } | |
336 | } | |
337 | return NULL; | |
338 | } | |
339 | ||
0be8dfb2 | 340 | static struct peer * |
718e3744 | 341 | bgpPeerTable_lookup (struct variable *v, oid name[], size_t *length, |
342 | struct in_addr *addr, int exact) | |
343 | { | |
344 | struct peer *peer = NULL; | |
345 | int len; | |
346 | ||
347 | if (exact) | |
348 | { | |
349 | /* Check the length. */ | |
350 | if (*length - v->namelen != sizeof (struct in_addr)) | |
351 | return NULL; | |
352 | ||
353 | oid2in_addr (name + v->namelen, IN_ADDR_SIZE, addr); | |
354 | ||
355 | peer = peer_lookup_addr_ipv4 (addr); | |
356 | return peer; | |
357 | } | |
358 | else | |
359 | { | |
360 | len = *length - v->namelen; | |
361 | if (len > 4) len = 4; | |
362 | ||
363 | oid2in_addr (name + v->namelen, len, addr); | |
364 | ||
365 | peer = bgp_peer_lookup_next (addr); | |
366 | ||
367 | if (peer == NULL) | |
368 | return NULL; | |
369 | ||
370 | oid_copy_addr (name + v->namelen, addr, sizeof (struct in_addr)); | |
371 | *length = sizeof (struct in_addr) + v->namelen; | |
372 | ||
373 | return peer; | |
374 | } | |
375 | return NULL; | |
376 | } | |
377 | ||
378 | /* BGP write methods. */ | |
0be8dfb2 | 379 | static int |
718e3744 | 380 | write_bgpPeerTable (int action, u_char *var_val, |
381 | u_char var_val_type, size_t var_val_len, | |
382 | u_char *statP, oid *name, size_t length, | |
383 | struct variable *v) | |
384 | { | |
385 | struct in_addr addr; | |
386 | struct peer *peer; | |
387 | long intval; | |
0be8dfb2 | 388 | size_t bigsize = SNMP_MAX_LEN; |
718e3744 | 389 | |
390 | if (var_val_type != ASN_INTEGER) | |
391 | { | |
392 | return SNMP_ERR_WRONGTYPE; | |
393 | } | |
394 | if (var_val_len != sizeof (long)) | |
395 | { | |
396 | return SNMP_ERR_WRONGLENGTH; | |
397 | } | |
398 | ||
399 | if (! asn_parse_int(var_val, &bigsize, &var_val_type, | |
400 | &intval, sizeof(long))) | |
401 | { | |
402 | return SNMP_ERR_WRONGENCODING; | |
403 | } | |
404 | ||
405 | memset (&addr, 0, sizeof (struct in_addr)); | |
406 | ||
407 | peer = bgpPeerTable_lookup (v, name, &length, &addr, 1); | |
408 | if (! peer) | |
409 | return SNMP_ERR_NOSUCHNAME; | |
410 | ||
411 | printf ("val: %ld\n", intval); | |
412 | ||
413 | switch (v->magic) | |
414 | { | |
415 | case BGPPEERADMINSTATUS: | |
416 | #define BGP_PeerAdmin_stop 1 | |
417 | #define BGP_PeerAdmin_start 2 | |
418 | /* When the peer is established, */ | |
419 | if (intval == BGP_PeerAdmin_stop) | |
420 | BGP_EVENT_ADD (peer, BGP_Stop); | |
421 | else if (intval == BGP_PeerAdmin_start) | |
422 | ; /* Do nothing. */ | |
423 | else | |
424 | return SNMP_ERR_NOSUCHNAME; | |
425 | break; | |
426 | case BGPPEERCONNECTRETRYINTERVAL: | |
427 | SET_FLAG (peer->config, PEER_CONFIG_CONNECT); | |
428 | peer->connect = intval; | |
429 | peer->v_connect = intval; | |
430 | break; | |
431 | case BGPPEERHOLDTIMECONFIGURED: | |
432 | SET_FLAG (peer->config, PEER_CONFIG_TIMER); | |
433 | peer->holdtime = intval; | |
434 | peer->v_holdtime = intval; | |
435 | break; | |
436 | case BGPPEERKEEPALIVECONFIGURED: | |
437 | SET_FLAG (peer->config, PEER_CONFIG_TIMER); | |
438 | peer->keepalive = intval; | |
439 | peer->v_keepalive = intval; | |
440 | break; | |
441 | case BGPPEERMINASORIGINATIONINTERVAL: | |
442 | peer->v_asorig = intval; | |
443 | break; | |
444 | case BGPPEERMINROUTEADVERTISEMENTINTERVAL: | |
445 | peer->v_routeadv = intval; | |
446 | break; | |
447 | } | |
448 | return SNMP_ERR_NOERROR; | |
449 | } | |
450 | ||
0be8dfb2 | 451 | static u_char * |
718e3744 | 452 | bgpPeerTable (struct variable *v, oid name[], size_t *length, |
453 | int exact, size_t *var_len, WriteMethod **write_method) | |
454 | { | |
455 | static struct in_addr addr; | |
456 | struct peer *peer; | |
457 | ||
8046ba6e VB |
458 | if (smux_header_table(v, name, length, exact, var_len, write_method) |
459 | == MATCH_FAILED) | |
460 | return NULL; | |
718e3744 | 461 | memset (&addr, 0, sizeof (struct in_addr)); |
462 | ||
463 | peer = bgpPeerTable_lookup (v, name, length, &addr, exact); | |
464 | if (! peer) | |
465 | return NULL; | |
466 | ||
467 | switch (v->magic) | |
468 | { | |
469 | case BGPPEERIDENTIFIER: | |
470 | return SNMP_IPADDRESS (peer->remote_id); | |
471 | break; | |
472 | case BGPPEERSTATE: | |
473 | return SNMP_INTEGER (peer->status); | |
474 | break; | |
475 | case BGPPEERADMINSTATUS: | |
476 | *write_method = write_bgpPeerTable; | |
477 | #define BGP_PeerAdmin_stop 1 | |
478 | #define BGP_PeerAdmin_start 2 | |
479 | if (CHECK_FLAG (peer->flags, PEER_FLAG_SHUTDOWN)) | |
480 | return SNMP_INTEGER (BGP_PeerAdmin_stop); | |
481 | else | |
482 | return SNMP_INTEGER (BGP_PeerAdmin_start); | |
483 | break; | |
484 | case BGPPEERNEGOTIATEDVERSION: | |
3d515fd9 | 485 | return SNMP_INTEGER (BGP_VERSION_4); |
718e3744 | 486 | break; |
487 | case BGPPEERLOCALADDR: | |
488 | if (peer->su_local) | |
489 | return SNMP_IPADDRESS (peer->su_local->sin.sin_addr); | |
490 | else | |
491 | return SNMP_IPADDRESS (bgp_empty_addr); | |
492 | break; | |
493 | case BGPPEERLOCALPORT: | |
494 | if (peer->su_local) | |
495 | return SNMP_INTEGER (ntohs (peer->su_local->sin.sin_port)); | |
496 | else | |
497 | return SNMP_INTEGER (0); | |
498 | break; | |
499 | case BGPPEERREMOTEADDR: | |
500 | if (peer->su_remote) | |
501 | return SNMP_IPADDRESS (peer->su_remote->sin.sin_addr); | |
502 | else | |
503 | return SNMP_IPADDRESS (bgp_empty_addr); | |
504 | break; | |
505 | case BGPPEERREMOTEPORT: | |
506 | if (peer->su_remote) | |
507 | return SNMP_INTEGER (ntohs (peer->su_remote->sin.sin_port)); | |
508 | else | |
509 | return SNMP_INTEGER (0); | |
510 | break; | |
511 | case BGPPEERREMOTEAS: | |
512 | return SNMP_INTEGER (peer->as); | |
513 | break; | |
514 | case BGPPEERINUPDATES: | |
515 | return SNMP_INTEGER (peer->update_in); | |
516 | break; | |
517 | case BGPPEEROUTUPDATES: | |
518 | return SNMP_INTEGER (peer->update_out); | |
519 | break; | |
520 | case BGPPEERINTOTALMESSAGES: | |
521 | return SNMP_INTEGER (peer->open_in + peer->update_in | |
522 | + peer->keepalive_in + peer->notify_in | |
523 | + peer->refresh_in + peer->dynamic_cap_in); | |
524 | break; | |
525 | case BGPPEEROUTTOTALMESSAGES: | |
526 | return SNMP_INTEGER (peer->open_out + peer->update_out | |
527 | + peer->keepalive_out + peer->notify_out | |
07661cb5 | 528 | + peer->refresh_out + peer->dynamic_cap_out); |
718e3744 | 529 | break; |
530 | case BGPPEERLASTERROR: | |
531 | { | |
532 | static u_char lasterror[2]; | |
533 | lasterror[0] = peer->notify.code; | |
534 | lasterror[1] = peer->notify.subcode; | |
535 | *var_len = 2; | |
536 | return (u_char *)&lasterror; | |
537 | } | |
538 | break; | |
539 | case BGPPEERFSMESTABLISHEDTRANSITIONS: | |
540 | return SNMP_INTEGER (peer->established); | |
541 | break; | |
542 | case BGPPEERFSMESTABLISHEDTIME: | |
543 | if (peer->uptime == 0) | |
544 | return SNMP_INTEGER (0); | |
545 | else | |
65957886 | 546 | return SNMP_INTEGER (bgp_clock () - peer->uptime); |
718e3744 | 547 | break; |
548 | case BGPPEERCONNECTRETRYINTERVAL: | |
549 | *write_method = write_bgpPeerTable; | |
550 | return SNMP_INTEGER (peer->v_connect); | |
551 | break; | |
552 | case BGPPEERHOLDTIME: | |
553 | return SNMP_INTEGER (peer->v_holdtime); | |
554 | break; | |
555 | case BGPPEERKEEPALIVE: | |
556 | return SNMP_INTEGER (peer->v_keepalive); | |
557 | break; | |
558 | case BGPPEERHOLDTIMECONFIGURED: | |
559 | *write_method = write_bgpPeerTable; | |
560 | if (CHECK_FLAG (peer->config, PEER_CONFIG_TIMER)) | |
561 | return SNMP_INTEGER (peer->holdtime); | |
562 | else | |
563 | return SNMP_INTEGER (peer->v_holdtime); | |
564 | break; | |
565 | case BGPPEERKEEPALIVECONFIGURED: | |
566 | *write_method = write_bgpPeerTable; | |
567 | if (CHECK_FLAG (peer->config, PEER_CONFIG_TIMER)) | |
568 | return SNMP_INTEGER (peer->keepalive); | |
569 | else | |
570 | return SNMP_INTEGER (peer->v_keepalive); | |
571 | break; | |
572 | case BGPPEERMINASORIGINATIONINTERVAL: | |
573 | *write_method = write_bgpPeerTable; | |
574 | return SNMP_INTEGER (peer->v_asorig); | |
575 | break; | |
576 | case BGPPEERMINROUTEADVERTISEMENTINTERVAL: | |
577 | *write_method = write_bgpPeerTable; | |
578 | return SNMP_INTEGER (peer->v_routeadv); | |
579 | break; | |
580 | case BGPPEERINUPDATEELAPSEDTIME: | |
581 | if (peer->update_time == 0) | |
582 | return SNMP_INTEGER (0); | |
583 | else | |
65957886 | 584 | return SNMP_INTEGER (bgp_clock () - peer->update_time); |
718e3744 | 585 | break; |
586 | default: | |
587 | return NULL; | |
588 | break; | |
589 | } | |
590 | return NULL; | |
591 | } | |
592 | ||
0be8dfb2 | 593 | static u_char * |
718e3744 | 594 | bgpIdentifier (struct variable *v, oid name[], size_t *length, |
595 | int exact, size_t *var_len, WriteMethod **write_method) | |
596 | { | |
597 | struct bgp *bgp; | |
598 | ||
599 | if (smux_header_generic(v, name, length, exact, var_len, write_method) | |
600 | == MATCH_FAILED) | |
601 | return NULL; | |
602 | ||
603 | bgp = bgp_get_default (); | |
604 | if (!bgp) | |
605 | return NULL; | |
606 | ||
607 | return SNMP_IPADDRESS (bgp->router_id); | |
608 | } | |
609 | ||
0be8dfb2 | 610 | static u_char * |
718e3744 | 611 | bgpRcvdPathAttrTable (struct variable *v, oid name[], size_t *length, |
612 | int exact, size_t *var_len, WriteMethod **write_method) | |
613 | { | |
614 | /* Received Path Attribute Table. This table contains, one entry | |
615 | per path to a network, path attributes received from all peers | |
616 | running BGP version 3 or less. This table is obsolete, having | |
617 | been replaced in functionality with the bgp4PathAttrTable. */ | |
618 | return NULL; | |
619 | } | |
620 | ||
0be8dfb2 | 621 | static struct bgp_info * |
718e3744 | 622 | bgp4PathAttrLookup (struct variable *v, oid name[], size_t *length, |
623 | struct bgp *bgp, struct prefix_ipv4 *addr, int exact) | |
624 | { | |
625 | oid *offset; | |
626 | int offsetlen; | |
627 | struct bgp_info *binfo; | |
628 | struct bgp_info *min; | |
629 | struct bgp_node *rn; | |
630 | union sockunion su; | |
fd79ac91 | 631 | unsigned int len; |
718e3744 | 632 | struct in_addr paddr; |
633 | ||
634 | #define BGP_PATHATTR_ENTRY_OFFSET \ | |
635 | (IN_ADDR_SIZE + 1 + IN_ADDR_SIZE) | |
636 | ||
637 | if (exact) | |
638 | { | |
639 | if (*length - v->namelen != BGP_PATHATTR_ENTRY_OFFSET) | |
640 | return NULL; | |
641 | ||
642 | /* Set OID offset for prefix. */ | |
643 | offset = name + v->namelen; | |
644 | oid2in_addr (offset, IN_ADDR_SIZE, &addr->prefix); | |
645 | offset += IN_ADDR_SIZE; | |
646 | ||
647 | /* Prefix length. */ | |
648 | addr->prefixlen = *offset; | |
649 | offset++; | |
650 | ||
651 | /* Peer address. */ | |
652 | su.sin.sin_family = AF_INET; | |
653 | oid2in_addr (offset, IN_ADDR_SIZE, &su.sin.sin_addr); | |
654 | ||
655 | /* Lookup node. */ | |
656 | rn = bgp_node_lookup (bgp->rib[AFI_IP][SAFI_UNICAST], | |
657 | (struct prefix *) addr); | |
658 | if (rn) | |
659 | { | |
660 | bgp_unlock_node (rn); | |
661 | ||
662 | for (binfo = rn->info; binfo; binfo = binfo->next) | |
663 | if (sockunion_same (&binfo->peer->su, &su)) | |
664 | return binfo; | |
665 | } | |
666 | } | |
667 | else | |
668 | { | |
669 | offset = name + v->namelen; | |
670 | offsetlen = *length - v->namelen; | |
671 | len = offsetlen; | |
672 | ||
673 | if (offsetlen == 0) | |
674 | rn = bgp_table_top (bgp->rib[AFI_IP][SAFI_UNICAST]); | |
675 | else | |
676 | { | |
677 | if (len > IN_ADDR_SIZE) | |
678 | len = IN_ADDR_SIZE; | |
679 | ||
680 | oid2in_addr (offset, len, &addr->prefix); | |
681 | ||
682 | offset += IN_ADDR_SIZE; | |
683 | offsetlen -= IN_ADDR_SIZE; | |
684 | ||
685 | if (offsetlen > 0) | |
686 | addr->prefixlen = *offset; | |
687 | else | |
688 | addr->prefixlen = len * 8; | |
689 | ||
690 | rn = bgp_node_get (bgp->rib[AFI_IP][SAFI_UNICAST], | |
691 | (struct prefix *) addr); | |
692 | ||
693 | offset++; | |
694 | offsetlen--; | |
695 | } | |
696 | ||
697 | if (offsetlen > 0) | |
698 | { | |
699 | len = offsetlen; | |
700 | if (len > IN_ADDR_SIZE) | |
701 | len = IN_ADDR_SIZE; | |
702 | ||
703 | oid2in_addr (offset, len, &paddr); | |
704 | } | |
705 | else | |
706 | paddr.s_addr = 0; | |
707 | ||
708 | if (! rn) | |
709 | return NULL; | |
710 | ||
711 | do | |
712 | { | |
713 | min = NULL; | |
714 | ||
715 | for (binfo = rn->info; binfo; binfo = binfo->next) | |
716 | { | |
717 | if (binfo->peer->su.sin.sin_family == AF_INET | |
718 | && ntohl (paddr.s_addr) | |
719 | < ntohl (binfo->peer->su.sin.sin_addr.s_addr)) | |
720 | { | |
721 | if (min) | |
722 | { | |
723 | if (ntohl (binfo->peer->su.sin.sin_addr.s_addr) | |
724 | < ntohl (min->peer->su.sin.sin_addr.s_addr)) | |
725 | min = binfo; | |
726 | } | |
727 | else | |
728 | min = binfo; | |
729 | } | |
730 | } | |
731 | ||
732 | if (min) | |
733 | { | |
734 | *length = v->namelen + BGP_PATHATTR_ENTRY_OFFSET; | |
735 | ||
736 | offset = name + v->namelen; | |
737 | oid_copy_addr (offset, &rn->p.u.prefix4, IN_ADDR_SIZE); | |
738 | offset += IN_ADDR_SIZE; | |
739 | *offset = rn->p.prefixlen; | |
740 | offset++; | |
741 | oid_copy_addr (offset, &min->peer->su.sin.sin_addr, | |
742 | IN_ADDR_SIZE); | |
743 | addr->prefix = rn->p.u.prefix4; | |
744 | addr->prefixlen = rn->p.prefixlen; | |
745 | ||
746 | bgp_unlock_node (rn); | |
747 | ||
748 | return min; | |
749 | } | |
750 | ||
751 | paddr.s_addr = 0; | |
752 | } | |
753 | while ((rn = bgp_route_next (rn)) != NULL); | |
754 | } | |
755 | return NULL; | |
756 | } | |
757 | ||
0be8dfb2 | 758 | static u_char * |
718e3744 | 759 | bgp4PathAttrTable (struct variable *v, oid name[], size_t *length, |
760 | int exact, size_t *var_len, WriteMethod **write_method) | |
761 | { | |
762 | struct bgp *bgp; | |
763 | struct bgp_info *binfo; | |
764 | struct prefix_ipv4 addr; | |
765 | ||
766 | bgp = bgp_get_default (); | |
767 | if (! bgp) | |
768 | return NULL; | |
769 | ||
8046ba6e VB |
770 | if (smux_header_table(v, name, length, exact, var_len, write_method) |
771 | == MATCH_FAILED) | |
772 | return NULL; | |
718e3744 | 773 | memset (&addr, 0, sizeof (struct prefix_ipv4)); |
774 | ||
775 | binfo = bgp4PathAttrLookup (v, name, length, bgp, &addr, exact); | |
776 | if (! binfo) | |
777 | return NULL; | |
778 | ||
779 | switch (v->magic) | |
780 | { | |
781 | case BGP4PATHATTRPEER: /* 1 */ | |
782 | return SNMP_IPADDRESS (binfo->peer->su.sin.sin_addr); | |
783 | break; | |
784 | case BGP4PATHATTRIPADDRPREFIXLEN: /* 2 */ | |
785 | return SNMP_INTEGER (addr.prefixlen); | |
786 | break; | |
787 | case BGP4PATHATTRIPADDRPREFIX: /* 3 */ | |
788 | return SNMP_IPADDRESS (addr.prefix); | |
789 | break; | |
790 | case BGP4PATHATTRORIGIN: /* 4 */ | |
791 | return SNMP_INTEGER (binfo->attr->origin); | |
792 | break; | |
793 | case BGP4PATHATTRASPATHSEGMENT: /* 5 */ | |
fe69a505 | 794 | return aspath_snmp_pathseg (binfo->attr->aspath, var_len); |
718e3744 | 795 | break; |
796 | case BGP4PATHATTRNEXTHOP: /* 6 */ | |
797 | return SNMP_IPADDRESS (binfo->attr->nexthop); | |
798 | break; | |
799 | case BGP4PATHATTRMULTIEXITDISC: /* 7 */ | |
800 | return SNMP_INTEGER (binfo->attr->med); | |
801 | break; | |
802 | case BGP4PATHATTRLOCALPREF: /* 8 */ | |
803 | return SNMP_INTEGER (binfo->attr->local_pref); | |
804 | break; | |
805 | case BGP4PATHATTRATOMICAGGREGATE: /* 9 */ | |
806 | return SNMP_INTEGER (1); | |
807 | break; | |
808 | case BGP4PATHATTRAGGREGATORAS: /* 10 */ | |
fb982c25 PJ |
809 | if (binfo->attr->extra) |
810 | return SNMP_INTEGER (binfo->attr->extra->aggregator_as); | |
811 | else | |
812 | return SNMP_INTEGER (0); | |
718e3744 | 813 | break; |
814 | case BGP4PATHATTRAGGREGATORADDR: /* 11 */ | |
fb982c25 PJ |
815 | if (binfo->attr->extra) |
816 | return SNMP_IPADDRESS (binfo->attr->extra->aggregator_addr); | |
817 | else | |
818 | return SNMP_INTEGER (0); | |
718e3744 | 819 | break; |
820 | case BGP4PATHATTRCALCLOCALPREF: /* 12 */ | |
821 | return SNMP_INTEGER (-1); | |
822 | break; | |
823 | case BGP4PATHATTRBEST: /* 13 */ | |
824 | #define BGP4_PathAttrBest_false 1 | |
825 | #define BGP4_PathAttrBest_true 2 | |
826 | if (CHECK_FLAG (binfo->flags, BGP_INFO_SELECTED)) | |
827 | return SNMP_INTEGER (BGP4_PathAttrBest_true); | |
828 | else | |
829 | return SNMP_INTEGER (BGP4_PathAttrBest_false); | |
830 | break; | |
831 | case BGP4PATHATTRUNKNOWN: /* 14 */ | |
832 | *var_len = 0; | |
833 | return NULL; | |
834 | break; | |
835 | } | |
836 | return NULL; | |
837 | } | |
838 | \f | |
839 | /* BGP Traps. */ | |
840 | struct trap_object bgpTrapList[] = | |
841 | { | |
b8cf46b7 VB |
842 | {3, {3, 1, BGPPEERLASTERROR}}, |
843 | {3, {3, 1, BGPPEERSTATE}} | |
718e3744 | 844 | }; |
845 | ||
846 | void | |
847 | bgpTrapEstablished (struct peer *peer) | |
848 | { | |
849 | int ret; | |
850 | struct in_addr addr; | |
851 | oid index[sizeof (oid) * IN_ADDR_SIZE]; | |
852 | ||
853 | ret = inet_aton (peer->host, &addr); | |
854 | if (ret == 0) | |
855 | return; | |
856 | ||
857 | oid_copy_addr (index, &addr, IN_ADDR_SIZE); | |
858 | ||
b7c0d065 VB |
859 | smux_trap (bgp_variables, sizeof bgp_variables / sizeof (struct variable), |
860 | bgp_trap_oid, sizeof bgp_trap_oid / sizeof (oid), | |
861 | bgp_oid, sizeof bgp_oid / sizeof (oid), | |
718e3744 | 862 | index, IN_ADDR_SIZE, |
863 | bgpTrapList, sizeof bgpTrapList / sizeof (struct trap_object), | |
4b89e45d | 864 | BGPESTABLISHED); |
718e3744 | 865 | } |
866 | ||
867 | void | |
868 | bgpTrapBackwardTransition (struct peer *peer) | |
869 | { | |
870 | int ret; | |
871 | struct in_addr addr; | |
872 | oid index[sizeof (oid) * IN_ADDR_SIZE]; | |
873 | ||
874 | ret = inet_aton (peer->host, &addr); | |
875 | if (ret == 0) | |
876 | return; | |
877 | ||
878 | oid_copy_addr (index, &addr, IN_ADDR_SIZE); | |
879 | ||
b7c0d065 VB |
880 | smux_trap (bgp_variables, sizeof bgp_variables / sizeof (struct variable), |
881 | bgp_trap_oid, sizeof bgp_trap_oid / sizeof (oid), | |
882 | bgp_oid, sizeof bgp_oid / sizeof (oid), | |
718e3744 | 883 | index, IN_ADDR_SIZE, |
884 | bgpTrapList, sizeof bgpTrapList / sizeof (struct trap_object), | |
4b89e45d | 885 | BGPBACKWARDTRANSITION); |
718e3744 | 886 | } |
887 | ||
888 | void | |
66e5cd87 | 889 | bgp_snmp_init (void) |
718e3744 | 890 | { |
c75105ab | 891 | smux_init (bm->master); |
718e3744 | 892 | REGISTER_MIB("mibII/bgp", bgp_variables, variable, bgp_oid); |
718e3744 | 893 | } |
894 | #endif /* HAVE_SNMP */ |