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Commit | Line | Data |
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6c29258c YO |
1 | /* BMP support. |
2 | * Copyright (C) 2018 Yasuhiro Ohara | |
ed18356f | 3 | * Copyright (C) 2019 David Lamparter for NetDEF, Inc. |
6c29258c | 4 | * |
ed18356f DL |
5 | * This program is free software; you can redistribute it and/or modify it |
6 | * under the terms of the GNU General Public License as published by the Free | |
7 | * Software Foundation; either version 2 of the License, or (at your option) | |
8 | * any later version. | |
6c29258c | 9 | * |
ed18356f DL |
10 | * This program is distributed in the hope that it will be useful, but WITHOUT |
11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
13 | * more details. | |
6c29258c YO |
14 | * |
15 | * You should have received a copy of the GNU General Public License along | |
16 | * with this program; see the file COPYING; if not, write to the Free Software | |
17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
18 | */ | |
19 | ||
20 | #include <zebra.h> | |
21 | ||
22 | #include "log.h" | |
23 | #include "stream.h" | |
24 | #include "sockunion.h" | |
25 | #include "command.h" | |
26 | #include "prefix.h" | |
27 | #include "thread.h" | |
28 | #include "linklist.h" | |
29 | #include "queue.h" | |
ed18356f | 30 | #include "pullwr.h" |
6c29258c YO |
31 | #include "memory.h" |
32 | #include "network.h" | |
33 | #include "filter.h" | |
34 | #include "lib_errors.h" | |
35 | #include "stream.h" | |
0ba4eeec DL |
36 | #include "libfrr.h" |
37 | #include "version.h" | |
ed18356f DL |
38 | #include "jhash.h" |
39 | #include "termtable.h" | |
6c29258c YO |
40 | |
41 | #include "bgpd/bgp_table.h" | |
42 | #include "bgpd/bgpd.h" | |
43 | #include "bgpd/bgp_route.h" | |
44 | #include "bgpd/bgp_attr.h" | |
45 | #include "bgpd/bgp_dump.h" | |
46 | #include "bgpd/bgp_errors.h" | |
d35a6c28 | 47 | #include "bgpd/bgp_packet.h" |
6c29258c | 48 | #include "bgpd/bgp_bmp.h" |
ed18356f DL |
49 | #include "bgpd/bgp_fsm.h" |
50 | #include "bgpd/bgp_updgrp.h" | |
51 | #include "bgpd/bgp_vty.h" | |
52 | ||
53 | static void bmp_close(struct bmp *bmp); | |
54 | static struct bmp_bgp *bmp_bgp_find(struct bgp *bgp); | |
55 | static void bmp_targets_put(struct bmp_targets *bt); | |
56 | static struct bmp_bgp_peer *bmp_bgp_peer_find(uint64_t peerid); | |
57 | static struct bmp_bgp_peer *bmp_bgp_peer_get(struct peer *peer); | |
58 | static void bmp_active_disconnected(struct bmp_active *ba); | |
59 | static void bmp_active_put(struct bmp_active *ba); | |
60 | ||
61 | DEFINE_MGROUP(BMP, "BMP (BGP Monitoring Protocol)") | |
62 | ||
63 | DEFINE_MTYPE_STATIC(BMP, BMP_CONN, "BMP connection state") | |
64 | DEFINE_MTYPE_STATIC(BMP, BMP_TARGETS, "BMP targets") | |
65 | DEFINE_MTYPE_STATIC(BMP, BMP_TARGETSNAME, "BMP targets name") | |
66 | DEFINE_MTYPE_STATIC(BMP, BMP_LISTENER, "BMP listener") | |
67 | DEFINE_MTYPE_STATIC(BMP, BMP_ACTIVE, "BMP active connection config") | |
68 | DEFINE_MTYPE_STATIC(BMP, BMP_ACLNAME, "BMP access-list name") | |
69 | DEFINE_MTYPE_STATIC(BMP, BMP_QUEUE, "BMP update queue item") | |
70 | DEFINE_MTYPE_STATIC(BMP, BMP, "BMP instance state") | |
71 | DEFINE_MTYPE_STATIC(BMP, BMP_MIRRORQ, "BMP route mirroring buffer") | |
72 | DEFINE_MTYPE_STATIC(BMP, BMP_PEER, "BMP per BGP peer data") | |
73 | DEFINE_MTYPE_STATIC(BMP, BMP_OPEN, "BMP stored BGP OPEN message") | |
74 | ||
75 | DEFINE_QOBJ_TYPE(bmp_targets) | |
76 | ||
77 | static int bmp_bgp_cmp(const struct bmp_bgp *a, const struct bmp_bgp *b) | |
78 | { | |
79 | if (a->bgp < b->bgp) | |
80 | return -1; | |
81 | if (a->bgp > b->bgp) | |
82 | return 1; | |
83 | return 0; | |
84 | } | |
85 | ||
86 | static uint32_t bmp_bgp_hash(const struct bmp_bgp *e) | |
87 | { | |
88 | return jhash(&e->bgp, sizeof(e->bgp), 0x55aa5a5a); | |
89 | } | |
6c29258c | 90 | |
ed18356f DL |
91 | DECLARE_HASH(bmp_bgph, struct bmp_bgp, bbi, bmp_bgp_cmp, bmp_bgp_hash) |
92 | ||
93 | struct bmp_bgph_head bmp_bgph; | |
94 | ||
95 | static int bmp_bgp_peer_cmp(const struct bmp_bgp_peer *a, | |
96 | const struct bmp_bgp_peer *b) | |
97 | { | |
98 | if (a->peerid < b->peerid) | |
99 | return -1; | |
100 | if (a->peerid > b->peerid) | |
101 | return 1; | |
102 | return 0; | |
103 | } | |
104 | ||
105 | static uint32_t bmp_bgp_peer_hash(const struct bmp_bgp_peer *e) | |
106 | { | |
107 | return e->peerid; | |
108 | } | |
6c29258c | 109 | |
ed18356f DL |
110 | DECLARE_HASH(bmp_peerh, struct bmp_bgp_peer, bpi, |
111 | bmp_bgp_peer_cmp, bmp_bgp_peer_hash) | |
6c29258c | 112 | |
ed18356f | 113 | struct bmp_peerh_head bmp_peerh; |
6c29258c | 114 | |
ed18356f | 115 | DECLARE_LIST(bmp_mirrorq, struct bmp_mirrorq, bmi) |
6c29258c | 116 | |
ed18356f | 117 | /* listener management */ |
6c29258c | 118 | |
ed18356f DL |
119 | static int bmp_listener_cmp(const struct bmp_listener *a, |
120 | const struct bmp_listener *b) | |
6c29258c | 121 | { |
ed18356f | 122 | int c; |
6c29258c | 123 | |
ed18356f DL |
124 | c = sockunion_cmp(&a->addr, &b->addr); |
125 | if (c) | |
126 | return c; | |
127 | if (a->port < b->port) | |
128 | return -1; | |
129 | if (a->port > b->port) | |
130 | return 1; | |
131 | return 0; | |
132 | } | |
6c29258c | 133 | |
ed18356f DL |
134 | DECLARE_SORTLIST_UNIQ(bmp_listeners, struct bmp_listener, bli, bmp_listener_cmp) |
135 | ||
136 | static int bmp_targets_cmp(const struct bmp_targets *a, | |
137 | const struct bmp_targets *b) | |
138 | { | |
139 | return strcmp(a->name, b->name); | |
6c29258c YO |
140 | } |
141 | ||
ed18356f DL |
142 | DECLARE_SORTLIST_UNIQ(bmp_targets, struct bmp_targets, bti, bmp_targets_cmp) |
143 | ||
144 | DECLARE_LIST(bmp_session, struct bmp, bsi) | |
145 | ||
146 | DECLARE_DLIST(bmp_qlist, struct bmp_queue_entry, bli) | |
147 | ||
148 | static int bmp_qhash_cmp(const struct bmp_queue_entry *a, | |
149 | const struct bmp_queue_entry *b) | |
6c29258c | 150 | { |
ed18356f DL |
151 | int ret; |
152 | ret = prefix_cmp(&a->p, &b->p); | |
153 | if (ret) | |
154 | return ret; | |
155 | ret = memcmp(&a->peerid, &b->peerid, | |
156 | offsetof(struct bmp_queue_entry, refcount) - | |
157 | offsetof(struct bmp_queue_entry, peerid)); | |
158 | return ret; | |
6c29258c YO |
159 | } |
160 | ||
ed18356f | 161 | static uint32_t bmp_qhash_hkey(const struct bmp_queue_entry *e) |
6c29258c | 162 | { |
ed18356f DL |
163 | uint32_t key; |
164 | ||
165 | key = prefix_hash_key((void *)&e->p); | |
166 | key = jhash(&e->peerid, | |
167 | offsetof(struct bmp_queue_entry, refcount) - | |
168 | offsetof(struct bmp_queue_entry, peerid), | |
169 | key); | |
170 | return key; | |
171 | } | |
6c29258c | 172 | |
ed18356f DL |
173 | DECLARE_HASH(bmp_qhash, struct bmp_queue_entry, bhi, |
174 | bmp_qhash_cmp, bmp_qhash_hkey) | |
6c29258c | 175 | |
ed18356f DL |
176 | static int bmp_active_cmp(const struct bmp_active *a, |
177 | const struct bmp_active *b) | |
178 | { | |
179 | int c; | |
180 | ||
181 | c = strcmp(a->hostname, b->hostname); | |
182 | if (c) | |
183 | return c; | |
184 | if (a->port < b->port) | |
185 | return -1; | |
186 | if (a->port > b->port) | |
187 | return 1; | |
6c29258c YO |
188 | return 0; |
189 | } | |
190 | ||
ed18356f DL |
191 | DECLARE_SORTLIST_UNIQ(bmp_actives, struct bmp_active, bai, bmp_active_cmp) |
192 | ||
193 | static struct bmp *bmp_new(struct bmp_targets *bt, int bmp_sock) | |
6c29258c | 194 | { |
ed18356f DL |
195 | struct bmp *new = XCALLOC(MTYPE_BMP_CONN, sizeof(struct bmp)); |
196 | afi_t afi; | |
197 | safi_t safi; | |
198 | ||
199 | monotime(&new->t_up); | |
200 | new->targets = bt; | |
201 | new->socket = bmp_sock; | |
202 | new->syncafi = AFI_MAX; | |
203 | ||
204 | FOREACH_AFI_SAFI (afi, safi) { | |
205 | new->afistate[afi][safi] = bt->afimon[afi][safi] | |
206 | ? BMP_AFI_NEEDSYNC : BMP_AFI_INACTIVE; | |
207 | } | |
208 | ||
209 | bmp_session_add_tail(&bt->sessions, new); | |
210 | return new; | |
6c29258c | 211 | } |
6c29258c | 212 | |
ed18356f | 213 | static void bmp_free(struct bmp *bmp) |
6c29258c | 214 | { |
ed18356f DL |
215 | bmp_session_del(&bmp->targets->sessions, bmp); |
216 | XFREE(MTYPE_BMP_CONN, bmp); | |
6c29258c YO |
217 | } |
218 | ||
219 | static void bmp_common_hdr(struct stream *s, uint8_t ver, uint8_t type) | |
220 | { | |
221 | stream_putc(s, ver); | |
222 | stream_putl(s, 0); //dummy message length. will be set later. | |
223 | stream_putc(s, type); | |
224 | } | |
225 | ||
ed18356f DL |
226 | static void bmp_per_peer_hdr(struct stream *s, struct peer *peer, |
227 | uint8_t flags, const struct timeval *tv) | |
6c29258c | 228 | { |
6c29258c YO |
229 | char peer_distinguisher[8]; |
230 | ||
231 | #define BMP_PEER_TYPE_GLOBAL_INSTANCE 0 | |
232 | #define BMP_PEER_TYPE_RD_INSTANCE 1 | |
233 | #define BMP_PEER_TYPE_LOCAL_INSTANCE 2 | |
234 | ||
235 | #define BMP_PEER_FLAG_V (1 << 7) | |
236 | #define BMP_PEER_FLAG_L (1 << 6) | |
237 | #define BMP_PEER_FLAG_A (1 << 5) | |
238 | ||
239 | /* Peer Type */ | |
240 | stream_putc(s, BMP_PEER_TYPE_GLOBAL_INSTANCE); | |
241 | ||
242 | /* Peer Flags */ | |
ed18356f DL |
243 | if (peer->su.sa.sa_family == AF_INET6) |
244 | SET_FLAG(flags, BMP_PEER_FLAG_V); | |
245 | else | |
246 | UNSET_FLAG(flags, BMP_PEER_FLAG_V); | |
247 | stream_putc(s, flags); | |
6c29258c YO |
248 | |
249 | /* Peer Distinguisher */ | |
250 | memset (&peer_distinguisher[0], 0, 8); | |
251 | stream_put(s, &peer_distinguisher[0], 8); | |
252 | ||
253 | /* Peer Address */ | |
ed18356f DL |
254 | if (peer->su.sa.sa_family == AF_INET6) |
255 | stream_put(s, &peer->su.sin6.sin6_addr, 16); | |
256 | else if (peer->su.sa.sa_family == AF_INET) { | |
257 | stream_putl(s, 0); | |
258 | stream_putl(s, 0); | |
259 | stream_putl(s, 0); | |
260 | stream_put_in_addr(s, &peer->su.sin.sin_addr); | |
261 | } else { | |
262 | stream_putl(s, 0); | |
6c29258c YO |
263 | stream_putl(s, 0); |
264 | stream_putl(s, 0); | |
265 | stream_putl(s, 0); | |
6c29258c YO |
266 | } |
267 | ||
268 | /* Peer AS */ | |
269 | stream_putl(s, peer->as); | |
270 | ||
271 | /* Peer BGP ID */ | |
272 | stream_put_in_addr(s, &peer->remote_id); | |
273 | ||
274 | /* Timestamp */ | |
ed18356f DL |
275 | if (tv) { |
276 | stream_putl(s, tv->tv_sec); | |
277 | stream_putl(s, tv->tv_usec); | |
278 | } else { | |
279 | stream_putl(s, 0); | |
280 | stream_putl(s, 0); | |
281 | } | |
6c29258c YO |
282 | } |
283 | ||
ed18356f DL |
284 | static void bmp_put_info_tlv(struct stream *s, uint16_t type, |
285 | const char *string) | |
6c29258c YO |
286 | { |
287 | int len = strlen (string); | |
288 | stream_putw(s, type); | |
289 | stream_putw(s, len); | |
290 | stream_put(s, string, len); | |
291 | } | |
292 | ||
293 | static int bmp_send_initiation(struct bmp *bmp) | |
294 | { | |
295 | int len; | |
296 | struct stream *s; | |
297 | s = stream_new(BGP_MAX_PACKET_SIZE); | |
298 | bmp_common_hdr(s, BMP_VERSION_3, BMP_TYPE_INITIATION); | |
299 | ||
300 | #define BMP_INFO_TYPE_SYSDESCR 1 | |
301 | #define BMP_INFO_TYPE_SYSNAME 2 | |
ed18356f DL |
302 | bmp_put_info_tlv(s, BMP_INFO_TYPE_SYSDESCR, |
303 | FRR_FULL_NAME " " FRR_VER_SHORT); | |
304 | bmp_put_info_tlv(s, BMP_INFO_TYPE_SYSNAME, cmd_hostname_get()); | |
6c29258c YO |
305 | |
306 | len = stream_get_endp(s); | |
307 | stream_putl_at(s, BMP_LENGTH_POS, len); //message length is set. | |
308 | ||
ed18356f DL |
309 | pullwr_write_stream(bmp->pullwr, s); |
310 | stream_free(s); | |
6c29258c YO |
311 | return 0; |
312 | } | |
313 | ||
ed18356f DL |
314 | static void bmp_notify_put(struct stream *s, struct bgp_notify *nfy) |
315 | { | |
316 | size_t len_pos; | |
317 | uint8_t marker[16] = { | |
318 | 0xff, 0xff, 0xff, 0xff, | |
319 | 0xff, 0xff, 0xff, 0xff, | |
320 | 0xff, 0xff, 0xff, 0xff, | |
321 | 0xff, 0xff, 0xff, 0xff, | |
322 | }; | |
323 | ||
324 | stream_put(s, marker, sizeof(marker)); | |
325 | len_pos = stream_get_endp(s); | |
326 | stream_putw(s, 0); | |
327 | stream_putc(s, BGP_MSG_NOTIFY); | |
328 | stream_putc(s, nfy->code); | |
329 | stream_putc(s, nfy->subcode); | |
330 | stream_put(s, nfy->data, nfy->length); | |
331 | ||
332 | stream_putw_at(s, len_pos, stream_get_endp(s) - len_pos | |
333 | + sizeof(marker)); | |
334 | } | |
335 | ||
336 | static struct stream *bmp_peerstate(struct peer *peer, bool down) | |
6c29258c | 337 | { |
6c29258c | 338 | struct stream *s; |
ed18356f DL |
339 | size_t len; |
340 | struct timeval uptime, uptime_real; | |
6c29258c | 341 | |
ed18356f DL |
342 | uptime.tv_sec = peer->uptime; |
343 | uptime.tv_usec = 0; | |
344 | monotime_to_realtime(&uptime, &uptime_real); | |
6c29258c | 345 | |
ed18356f | 346 | #define BGP_BMP_MAX_PACKET_SIZE 1024 |
6c29258c | 347 | s = stream_new(BGP_MAX_PACKET_SIZE); |
6c29258c | 348 | |
ed18356f DL |
349 | if (peer->status == Established && !down) { |
350 | struct bmp_bgp_peer *bbpeer; | |
6c29258c | 351 | |
ed18356f DL |
352 | bmp_common_hdr(s, BMP_VERSION_3, |
353 | BMP_TYPE_PEER_UP_NOTIFICATION); | |
354 | bmp_per_peer_hdr(s, peer, 0, &uptime_real); | |
6c29258c YO |
355 | |
356 | /* Local Address (16 bytes) */ | |
357 | if (peer->su_local->sa.sa_family == AF_INET6) | |
358 | stream_put(s, &peer->su_local->sin6.sin6_addr, 16); | |
359 | else if (peer->su_local->sa.sa_family == AF_INET) { | |
360 | stream_putl(s, 0); | |
361 | stream_putl(s, 0); | |
362 | stream_putl(s, 0); | |
363 | stream_put_in_addr(s, &peer->su_local->sin.sin_addr); | |
364 | } | |
365 | ||
366 | /* Local Port, Remote Port */ | |
367 | if (peer->su_local->sa.sa_family == AF_INET6) | |
368 | stream_putw(s, peer->su_local->sin6.sin6_port); | |
369 | else if (peer->su_local->sa.sa_family == AF_INET) | |
370 | stream_putw(s, peer->su_local->sin.sin_port); | |
371 | if (peer->su_remote->sa.sa_family == AF_INET6) | |
372 | stream_putw(s, peer->su_remote->sin6.sin6_port); | |
373 | else if (peer->su_remote->sa.sa_family == AF_INET) | |
374 | stream_putw(s, peer->su_remote->sin.sin_port); | |
375 | ||
ed18356f DL |
376 | static const uint8_t dummy_open[] = { |
377 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
378 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
379 | 0x00, 0x13, 0x01, | |
380 | }; | |
6c29258c | 381 | |
ed18356f | 382 | bbpeer = bmp_bgp_peer_find(peer->qobj_node.nid); |
6c29258c | 383 | |
ed18356f DL |
384 | if (bbpeer && bbpeer->open_tx) |
385 | stream_put(s, bbpeer->open_tx, bbpeer->open_tx_len); | |
386 | else { | |
387 | stream_put(s, dummy_open, sizeof(dummy_open)); | |
388 | zlog_warn("bmp: missing TX OPEN message for peer %s\n", | |
389 | peer->host); | |
390 | } | |
391 | if (bbpeer && bbpeer->open_rx) | |
392 | stream_put(s, bbpeer->open_rx, bbpeer->open_rx_len); | |
393 | else { | |
394 | stream_put(s, dummy_open, sizeof(dummy_open)); | |
395 | zlog_warn("bmp: missing RX OPEN message for peer %s\n", | |
396 | peer->host); | |
397 | } | |
6c29258c | 398 | |
ed18356f DL |
399 | if (peer->desc) |
400 | bmp_put_info_tlv(s, 0, peer->desc); | |
401 | } else { | |
402 | uint8_t type; | |
403 | size_t type_pos; | |
404 | ||
405 | bmp_common_hdr(s, BMP_VERSION_3, | |
406 | BMP_TYPE_PEER_DOWN_NOTIFICATION); | |
407 | bmp_per_peer_hdr(s, peer, 0, &uptime_real); | |
408 | ||
409 | type_pos = stream_get_endp(s); | |
410 | stream_putc(s, 0); /* placeholder for down reason */ | |
411 | ||
412 | switch (peer->last_reset) { | |
413 | case PEER_DOWN_NOTIFY_RECEIVED: | |
414 | type = BMP_PEERDOWN_REMOTE_NOTIFY; | |
415 | bmp_notify_put(s, &peer->notify); | |
416 | break; | |
417 | case PEER_DOWN_CLOSE_SESSION: | |
418 | type = BMP_PEERDOWN_REMOTE_CLOSE; | |
419 | break; | |
420 | default: | |
421 | type = BMP_PEERDOWN_LOCAL_NOTIFY; | |
422 | stream_put(s, peer->last_reset_cause, | |
423 | peer->last_reset_cause_size); | |
424 | break; | |
6c29258c | 425 | } |
ed18356f | 426 | stream_putc_at(s, type_pos, type); |
6c29258c YO |
427 | } |
428 | ||
ed18356f DL |
429 | len = stream_get_endp(s); |
430 | stream_putl_at(s, BMP_LENGTH_POS, len); //message length is set. | |
431 | return s; | |
432 | } | |
433 | ||
434 | ||
435 | static int bmp_send_peerup(struct bmp *bmp) | |
436 | { | |
437 | struct peer *peer; | |
438 | struct listnode *node; | |
439 | struct stream *s; | |
440 | ||
441 | /* Walk down all peers */ | |
442 | for (ALL_LIST_ELEMENTS_RO(bmp->targets->bgp->peer, node, peer)) { | |
443 | s = bmp_peerstate(peer, false); | |
444 | pullwr_write_stream(bmp->pullwr, s); | |
445 | stream_free(s); | |
446 | } | |
6c29258c YO |
447 | |
448 | return 0; | |
449 | } | |
450 | ||
ed18356f DL |
451 | /* XXX: kludge - filling the pullwr's buffer */ |
452 | static void bmp_send_all(struct bmp_bgp *bmpbgp, struct stream *s) | |
453 | { | |
454 | struct bmp_targets *bt; | |
455 | struct bmp *bmp; | |
456 | ||
457 | frr_each(bmp_targets, &bmpbgp->targets, bt) | |
458 | frr_each(bmp_session, &bt->sessions, bmp) | |
459 | pullwr_write_stream(bmp->pullwr, s); | |
460 | stream_free(s); | |
461 | } | |
462 | ||
463 | /* | |
464 | * Route Mirroring | |
465 | */ | |
466 | ||
467 | #define BMP_MIRROR_TLV_TYPE_BGP_MESSAGE 0 | |
468 | #define BMP_MIRROR_TLV_TYPE_INFO 1 | |
469 | ||
470 | #define BMP_MIRROR_INFO_CODE_ERRORPDU 0 | |
471 | #define BMP_MIRROR_INFO_CODE_LOSTMSGS 1 | |
472 | ||
473 | static struct bmp_mirrorq *bmp_pull_mirror(struct bmp *bmp) | |
474 | { | |
475 | struct bmp_mirrorq *bmq; | |
476 | ||
477 | bmq = bmp->mirrorpos; | |
478 | if (!bmq) | |
479 | return NULL; | |
480 | ||
481 | bmp->mirrorpos = bmp_mirrorq_next(&bmp->targets->bmpbgp->mirrorq, bmq); | |
482 | ||
483 | bmq->refcount--; | |
484 | if (!bmq->refcount) { | |
485 | bmp->targets->bmpbgp->mirror_qsize -= sizeof(*bmq) + bmq->len; | |
486 | bmp_mirrorq_del(&bmp->targets->bmpbgp->mirrorq, bmq); | |
487 | } | |
488 | return bmq; | |
489 | } | |
490 | ||
491 | static void bmp_mirror_cull(struct bmp_bgp *bmpbgp) | |
492 | { | |
493 | while (bmpbgp->mirror_qsize > bmpbgp->mirror_qsizelimit) { | |
494 | struct bmp_mirrorq *bmq, *inner; | |
495 | struct bmp_targets *bt; | |
496 | struct bmp *bmp; | |
497 | ||
498 | bmq = bmp_mirrorq_first(&bmpbgp->mirrorq); | |
499 | ||
500 | frr_each(bmp_targets, &bmpbgp->targets, bt) { | |
501 | if (!bt->mirror) | |
502 | continue; | |
503 | frr_each(bmp_session, &bt->sessions, bmp) { | |
504 | if (bmp->mirrorpos != bmq) | |
505 | continue; | |
506 | ||
507 | while ((inner = bmp_pull_mirror(bmp))) { | |
508 | if (!inner->refcount) | |
509 | XFREE(MTYPE_BMP_MIRRORQ, | |
510 | inner); | |
511 | } | |
512 | ||
513 | zlog_warn("bmp[%s] lost mirror messages due to buffer size limit", | |
514 | bmp->remote); | |
515 | bmp->mirror_lost = true; | |
516 | pullwr_bump(bmp->pullwr); | |
517 | } | |
518 | } | |
519 | } | |
520 | } | |
521 | ||
d35a6c28 DL |
522 | static int bmp_mirror_packet(struct peer *peer, uint8_t type, bgp_size_t size, |
523 | struct stream *packet) | |
6c29258c | 524 | { |
ed18356f DL |
525 | struct bmp_bgp *bmpbgp = bmp_bgp_find(peer->bgp); |
526 | struct timeval tv; | |
527 | struct bmp_mirrorq *qitem; | |
528 | struct bmp_targets *bt; | |
6c29258c | 529 | struct bmp *bmp; |
6c29258c | 530 | |
ed18356f DL |
531 | gettimeofday(&tv, NULL); |
532 | ||
533 | if (type == BGP_MSG_OPEN) { | |
534 | struct bmp_bgp_peer *bbpeer = bmp_bgp_peer_get(peer); | |
535 | ||
536 | XFREE(MTYPE_BMP_OPEN, bbpeer->open_rx); | |
537 | ||
538 | bbpeer->open_rx_len = size; | |
539 | bbpeer->open_rx = XMALLOC(MTYPE_BMP_OPEN, size); | |
540 | memcpy(bbpeer->open_rx, packet->data, size); | |
541 | } | |
542 | ||
543 | if (!bmpbgp) | |
d35a6c28 | 544 | return 0; |
6c29258c | 545 | |
ed18356f DL |
546 | qitem = XCALLOC(MTYPE_BMP_MIRRORQ, sizeof(*qitem) + size); |
547 | qitem->peerid = peer->qobj_node.nid; | |
548 | qitem->tv = tv; | |
549 | qitem->len = size; | |
550 | memcpy(qitem->data, packet->data, size); | |
551 | ||
552 | frr_each(bmp_targets, &bmpbgp->targets, bt) { | |
553 | if (!bt->mirror) | |
554 | continue; | |
555 | frr_each(bmp_session, &bt->sessions, bmp) { | |
556 | qitem->refcount++; | |
557 | if (!bmp->mirrorpos) | |
558 | bmp->mirrorpos = qitem; | |
559 | pullwr_bump(bmp->pullwr); | |
560 | } | |
561 | } | |
562 | if (qitem->refcount == 0) | |
563 | XFREE(MTYPE_BMP_MIRRORQ, qitem); | |
564 | else { | |
565 | bmpbgp->mirror_qsize += sizeof(*qitem) + size; | |
566 | bmp_mirrorq_add_tail(&bmpbgp->mirrorq, qitem); | |
567 | ||
568 | bmp_mirror_cull(bmpbgp); | |
569 | ||
570 | bmpbgp->mirror_qsizemax = MAX(bmpbgp->mirror_qsizemax, | |
571 | bmpbgp->mirror_qsize); | |
572 | } | |
573 | return 0; | |
574 | } | |
575 | ||
576 | static void bmp_wrmirror_lost(struct bmp *bmp, struct pullwr *pullwr) | |
577 | { | |
578 | struct stream *s; | |
579 | struct timeval tv; | |
580 | ||
581 | gettimeofday(&tv, NULL); | |
582 | ||
583 | s = stream_new(BGP_MAX_PACKET_SIZE); | |
584 | ||
585 | bmp_common_hdr(s, BMP_VERSION_3, BMP_TYPE_ROUTE_MIRRORING); | |
586 | bmp_per_peer_hdr(s, bmp->targets->bgp->peer_self, 0, &tv); | |
587 | ||
588 | stream_putw(s, BMP_MIRROR_TLV_TYPE_INFO); | |
589 | stream_putw(s, 2); | |
590 | stream_putw(s, BMP_MIRROR_INFO_CODE_LOSTMSGS); | |
591 | stream_putl_at(s, BMP_LENGTH_POS, stream_get_endp(s)); | |
592 | ||
593 | bmp->cnt_mirror_overruns++; | |
594 | pullwr_write_stream(bmp->pullwr, s); | |
595 | stream_free(s); | |
596 | } | |
597 | ||
598 | static bool bmp_wrmirror(struct bmp *bmp, struct pullwr *pullwr) | |
599 | { | |
600 | struct bmp_mirrorq *bmq; | |
601 | struct peer *peer; | |
602 | bool written = false; | |
603 | ||
604 | if (bmp->mirror_lost) { | |
605 | bmp_wrmirror_lost(bmp, pullwr); | |
606 | bmp->mirror_lost = false; | |
607 | return true; | |
608 | } | |
609 | ||
610 | bmq = bmp_pull_mirror(bmp); | |
611 | if (!bmq) | |
612 | return false; | |
613 | ||
614 | peer = QOBJ_GET_TYPESAFE(bmq->peerid, peer); | |
615 | if (!peer) { | |
616 | zlog_info("bmp: skipping mirror message for deleted peer"); | |
617 | goto out; | |
618 | } | |
619 | ||
620 | struct stream *s; | |
6c29258c YO |
621 | s = stream_new(BGP_MAX_PACKET_SIZE); |
622 | ||
623 | bmp_common_hdr(s, BMP_VERSION_3, BMP_TYPE_ROUTE_MIRRORING); | |
ed18356f | 624 | bmp_per_peer_hdr(s, peer, 0, &bmq->tv); |
6c29258c YO |
625 | |
626 | /* BMP Mirror TLV. */ | |
6c29258c | 627 | stream_putw(s, BMP_MIRROR_TLV_TYPE_BGP_MESSAGE); |
ed18356f DL |
628 | stream_putw(s, bmq->len); |
629 | stream_putl_at(s, BMP_LENGTH_POS, stream_get_endp(s) + bmq->len); | |
6c29258c | 630 | |
ed18356f DL |
631 | bmp->cnt_mirror++; |
632 | pullwr_write_stream(bmp->pullwr, s); | |
633 | pullwr_write(bmp->pullwr, bmq->data, bmq->len); | |
6c29258c | 634 | |
ed18356f DL |
635 | stream_free(s); |
636 | written = true; | |
6c29258c | 637 | |
ed18356f DL |
638 | out: |
639 | if (!bmq->refcount) | |
640 | XFREE(MTYPE_BMP_MIRRORQ, bmq); | |
641 | return written; | |
6c29258c YO |
642 | } |
643 | ||
ed18356f DL |
644 | static int bmp_outgoing_packet(struct peer *peer, uint8_t type, bgp_size_t size, |
645 | struct stream *packet) | |
6c29258c | 646 | { |
ed18356f DL |
647 | if (type == BGP_MSG_OPEN) { |
648 | struct bmp_bgp_peer *bbpeer = bmp_bgp_peer_get(peer); | |
6c29258c | 649 | |
ed18356f | 650 | XFREE(MTYPE_BMP_OPEN, bbpeer->open_tx); |
6c29258c | 651 | |
ed18356f DL |
652 | bbpeer->open_tx_len = size; |
653 | bbpeer->open_tx = XMALLOC(MTYPE_BMP_OPEN, size); | |
654 | memcpy(bbpeer->open_tx, packet->data, size); | |
655 | } | |
656 | return 0; | |
657 | } | |
6c29258c | 658 | |
ed18356f DL |
659 | static int bmp_peer_established(struct peer *peer) |
660 | { | |
661 | struct bmp_bgp *bmpbgp = bmp_bgp_find(peer->bgp); | |
6c29258c | 662 | |
ed18356f DL |
663 | if (!bmpbgp) |
664 | return 0; | |
6c29258c | 665 | |
ed18356f DL |
666 | if (peer->doppelganger && (peer->doppelganger->status != Deleted)) { |
667 | struct bmp_bgp_peer *bbpeer, *bbdopp; | |
6c29258c | 668 | |
ed18356f DL |
669 | bbpeer = bmp_bgp_peer_get(peer); |
670 | bbdopp = bmp_bgp_peer_find(peer->doppelganger->qobj_node.nid); | |
671 | if (bbdopp) { | |
672 | XFREE(MTYPE_BMP_OPEN, bbpeer->open_tx); | |
673 | XFREE(MTYPE_BMP_OPEN, bbpeer->open_rx); | |
6c29258c | 674 | |
ed18356f DL |
675 | bbpeer->open_tx = bbdopp->open_tx; |
676 | bbpeer->open_tx_len = bbdopp->open_tx_len; | |
677 | bbpeer->open_rx = bbdopp->open_rx; | |
678 | bbpeer->open_rx_len = bbdopp->open_rx_len; | |
6c29258c | 679 | |
ed18356f DL |
680 | bmp_peerh_del(&bmp_peerh, bbdopp); |
681 | XFREE(MTYPE_BMP_PEER, bbdopp); | |
682 | } | |
6c29258c | 683 | } |
ed18356f DL |
684 | |
685 | bmp_send_all(bmpbgp, bmp_peerstate(peer, false)); | |
6c29258c YO |
686 | return 0; |
687 | } | |
688 | ||
ed18356f | 689 | static int bmp_peer_backward(struct peer *peer) |
6c29258c | 690 | { |
ed18356f DL |
691 | struct bmp_bgp *bmpbgp = bmp_bgp_find(peer->bgp); |
692 | struct bmp_bgp_peer *bbpeer; | |
6c29258c | 693 | |
ed18356f DL |
694 | if (!bmpbgp) |
695 | return 0; | |
6c29258c | 696 | |
ed18356f DL |
697 | bbpeer = bmp_bgp_peer_find(peer->qobj_node.nid); |
698 | if (bbpeer) { | |
699 | XFREE(MTYPE_BMP_OPEN, bbpeer->open_tx); | |
700 | bbpeer->open_tx_len = 0; | |
701 | XFREE(MTYPE_BMP_OPEN, bbpeer->open_rx); | |
702 | bbpeer->open_rx_len = 0; | |
703 | } | |
6c29258c | 704 | |
ed18356f DL |
705 | bmp_send_all(bmpbgp, bmp_peerstate(peer, true)); |
706 | return 0; | |
707 | } | |
6c29258c | 708 | |
ed18356f DL |
709 | static void bmp_eor(struct bmp *bmp, afi_t afi, safi_t safi, uint8_t flags) |
710 | { | |
711 | struct peer *peer; | |
712 | struct listnode *node; | |
713 | struct stream *s, *s2; | |
714 | iana_afi_t pkt_afi; | |
715 | iana_safi_t pkt_safi; | |
6c29258c | 716 | |
ed18356f | 717 | s = stream_new(BGP_MAX_PACKET_SIZE); |
6c29258c | 718 | |
ed18356f DL |
719 | /* Make BGP update packet. */ |
720 | bgp_packet_set_marker(s, BGP_MSG_UPDATE); | |
6c29258c | 721 | |
ed18356f DL |
722 | /* Unfeasible Routes Length */ |
723 | stream_putw(s, 0); | |
6c29258c | 724 | |
ed18356f DL |
725 | if (afi == AFI_IP && safi == SAFI_UNICAST) { |
726 | /* Total Path Attribute Length */ | |
727 | stream_putw(s, 0); | |
728 | } else { | |
729 | /* Convert AFI, SAFI to values for packet. */ | |
730 | bgp_map_afi_safi_int2iana(afi, safi, &pkt_afi, &pkt_safi); | |
731 | ||
732 | /* Total Path Attribute Length */ | |
733 | stream_putw(s, 6); | |
734 | stream_putc(s, BGP_ATTR_FLAG_OPTIONAL); | |
735 | stream_putc(s, BGP_ATTR_MP_UNREACH_NLRI); | |
736 | stream_putc(s, 3); | |
737 | stream_putw(s, pkt_afi); | |
738 | stream_putc(s, pkt_safi); | |
6c29258c YO |
739 | } |
740 | ||
ed18356f | 741 | bgp_packet_set_size(s); |
6c29258c | 742 | |
ed18356f DL |
743 | for (ALL_LIST_ELEMENTS_RO(bmp->targets->bgp->peer, node, peer)) { |
744 | if (!peer->afc_nego[afi][safi]) | |
745 | continue; | |
6c29258c | 746 | |
ed18356f | 747 | s2 = stream_new(BGP_MAX_PACKET_SIZE); |
6c29258c | 748 | |
ed18356f DL |
749 | bmp_common_hdr(s2, BMP_VERSION_3, |
750 | BMP_TYPE_ROUTE_MONITORING); | |
751 | bmp_per_peer_hdr(s2, peer, flags, NULL); | |
6c29258c | 752 | |
ed18356f DL |
753 | stream_putl_at(s2, BMP_LENGTH_POS, |
754 | stream_get_endp(s) + stream_get_endp(s2)); | |
6c29258c | 755 | |
ed18356f DL |
756 | bmp->cnt_update++; |
757 | pullwr_write_stream(bmp->pullwr, s2); | |
758 | pullwr_write_stream(bmp->pullwr, s); | |
759 | stream_free(s2); | |
760 | } | |
761 | stream_free(s); | |
6c29258c YO |
762 | } |
763 | ||
ed18356f DL |
764 | static struct stream *bmp_update(struct prefix *p, struct peer *peer, |
765 | struct attr *attr, afi_t afi, safi_t safi) | |
6c29258c | 766 | { |
ed18356f DL |
767 | struct bpacket_attr_vec_arr vecarr; |
768 | struct stream *s; | |
769 | size_t attrlen_pos = 0, mpattrlen_pos = 0; | |
770 | bgp_size_t total_attr_len = 0; | |
771 | ||
772 | bpacket_attr_vec_arr_reset(&vecarr); | |
773 | ||
774 | s = stream_new(BGP_MAX_PACKET_SIZE); | |
775 | bgp_packet_set_marker(s, BGP_MSG_UPDATE); | |
776 | ||
777 | /* 2: withdrawn routes length */ | |
778 | stream_putw(s, 0); | |
779 | ||
780 | /* 3: total attributes length - attrlen_pos stores the position */ | |
781 | attrlen_pos = stream_get_endp(s); | |
782 | stream_putw(s, 0); | |
783 | ||
784 | /* 5: Encode all the attributes, except MP_REACH_NLRI attr. */ | |
785 | total_attr_len = bgp_packet_attribute(NULL, peer, s, attr, | |
786 | &vecarr, NULL, afi, safi, peer, NULL, NULL, 0, 0, 0); | |
6c29258c | 787 | |
ed18356f | 788 | /* space check? */ |
6c29258c | 789 | |
ed18356f DL |
790 | /* peer_cap_enhe & add-path removed */ |
791 | if (afi == AFI_IP && safi == SAFI_UNICAST) | |
792 | stream_put_prefix(s, p); | |
793 | else { | |
794 | size_t p1 = stream_get_endp(s); | |
6c29258c | 795 | |
ed18356f | 796 | /* MPLS removed for now */ |
6c29258c | 797 | |
ed18356f DL |
798 | mpattrlen_pos = bgp_packet_mpattr_start(s, peer, afi, safi, |
799 | &vecarr, attr); | |
800 | bgp_packet_mpattr_prefix(s, afi, safi, p, NULL, NULL, 0, | |
801 | 0, 0, attr); | |
802 | bgp_packet_mpattr_end(s, mpattrlen_pos); | |
803 | total_attr_len += stream_get_endp(s) - p1; | |
6c29258c YO |
804 | } |
805 | ||
ed18356f DL |
806 | /* set the total attribute length correctly */ |
807 | stream_putw_at(s, attrlen_pos, total_attr_len); | |
808 | bgp_packet_set_size(s); | |
809 | return s; | |
810 | } | |
6c29258c | 811 | |
ed18356f DL |
812 | static struct stream *bmp_withdraw(struct prefix *p, afi_t afi, safi_t safi) |
813 | { | |
814 | struct stream *s; | |
815 | size_t attrlen_pos = 0, mp_start, mplen_pos; | |
816 | bgp_size_t total_attr_len = 0; | |
817 | bgp_size_t unfeasible_len; | |
6c29258c | 818 | |
ed18356f | 819 | s = stream_new(BGP_MAX_PACKET_SIZE); |
6c29258c | 820 | |
ed18356f DL |
821 | bgp_packet_set_marker(s, BGP_MSG_UPDATE); |
822 | stream_putw(s, 0); | |
6c29258c | 823 | |
ed18356f DL |
824 | if (afi == AFI_IP && safi == SAFI_UNICAST) { |
825 | stream_put_prefix(s, p); | |
826 | unfeasible_len = stream_get_endp(s) - BGP_HEADER_SIZE | |
827 | - BGP_UNFEASIBLE_LEN; | |
828 | stream_putw_at(s, BGP_HEADER_SIZE, unfeasible_len); | |
829 | stream_putw(s, 0); | |
830 | } else { | |
831 | attrlen_pos = stream_get_endp(s); | |
832 | /* total attr length = 0 for now. reevaluate later */ | |
833 | stream_putw(s, 0); | |
834 | mp_start = stream_get_endp(s); | |
835 | mplen_pos = bgp_packet_mpunreach_start(s, afi, safi); | |
836 | ||
837 | bgp_packet_mpunreach_prefix(s, p, afi, safi, NULL, NULL, 0, | |
838 | 0, 0, NULL); | |
839 | /* Set the mp_unreach attr's length */ | |
840 | bgp_packet_mpunreach_end(s, mplen_pos); | |
841 | ||
842 | /* Set total path attribute length. */ | |
843 | total_attr_len = stream_get_endp(s) - mp_start; | |
844 | stream_putw_at(s, attrlen_pos, total_attr_len); | |
845 | } | |
846 | ||
847 | bgp_packet_set_size(s); | |
848 | return s; | |
849 | } | |
850 | ||
851 | static void bmp_monitor(struct bmp *bmp, struct peer *peer, uint8_t flags, | |
852 | struct prefix *p, struct attr *attr, afi_t afi, | |
853 | safi_t safi, time_t uptime) | |
854 | { | |
855 | struct stream *hdr, *msg; | |
856 | struct timeval tv = { .tv_sec = uptime, .tv_usec = 0 }; | |
857 | ||
858 | if (attr) | |
859 | msg = bmp_update(p, peer, attr, afi, safi); | |
860 | else | |
861 | msg = bmp_withdraw(p, afi, safi); | |
862 | ||
863 | hdr = stream_new(BGP_MAX_PACKET_SIZE); | |
864 | bmp_common_hdr(hdr, BMP_VERSION_3, BMP_TYPE_ROUTE_MONITORING); | |
865 | bmp_per_peer_hdr(hdr, peer, flags, &tv); | |
866 | ||
867 | stream_putl_at(hdr, BMP_LENGTH_POS, | |
868 | stream_get_endp(hdr) + stream_get_endp(msg)); | |
869 | ||
870 | bmp->cnt_update++; | |
871 | pullwr_write_stream(bmp->pullwr, hdr); | |
872 | pullwr_write_stream(bmp->pullwr, msg); | |
873 | stream_free(hdr); | |
874 | stream_free(msg); | |
875 | } | |
876 | ||
877 | static bool bmp_wrsync(struct bmp *bmp, struct pullwr *pullwr) | |
878 | { | |
879 | afi_t afi; | |
880 | safi_t safi; | |
881 | ||
882 | if (bmp->syncafi == AFI_MAX) { | |
883 | FOREACH_AFI_SAFI (afi, safi) { | |
884 | if (bmp->afistate[afi][safi] != BMP_AFI_NEEDSYNC) | |
885 | continue; | |
886 | ||
887 | bmp->afistate[afi][safi] = BMP_AFI_SYNC; | |
888 | ||
889 | bmp->syncafi = afi; | |
890 | bmp->syncsafi = safi; | |
891 | bmp->syncpeerid = 0; | |
892 | memset(&bmp->syncpos, 0, sizeof(bmp->syncpos)); | |
893 | bmp->syncpos.family = afi2family(afi); | |
894 | zlog_info("bmp[%s] %s %s sending table", | |
895 | bmp->remote, | |
896 | afi2str(bmp->syncafi), | |
897 | safi2str(bmp->syncsafi)); | |
898 | /* break does not work here, 2 loops... */ | |
899 | goto afibreak; | |
6c29258c | 900 | } |
ed18356f DL |
901 | if (bmp->syncafi == AFI_MAX) |
902 | return false; | |
903 | } | |
6c29258c | 904 | |
ed18356f DL |
905 | afibreak: |
906 | afi = bmp->syncafi; | |
907 | safi = bmp->syncsafi; | |
908 | ||
909 | if (!bmp->targets->afimon[afi][safi]) { | |
910 | /* shouldn't happen */ | |
911 | bmp->afistate[afi][safi] = BMP_AFI_INACTIVE; | |
912 | bmp->syncafi = AFI_MAX; | |
913 | bmp->syncsafi = SAFI_MAX; | |
914 | return true; | |
915 | } | |
916 | ||
917 | struct bgp_table *table = bmp->targets->bgp->rib[afi][safi]; | |
918 | struct bgp_node *bn; | |
919 | struct bgp_path_info *bpi = NULL, *bpiter; | |
920 | struct bgp_adj_in *adjin = NULL, *adjiter; | |
921 | ||
922 | bn = bgp_node_lookup(table, &bmp->syncpos); | |
923 | do { | |
924 | if (!bn) { | |
925 | bn = bgp_table_get_next(table, &bmp->syncpos); | |
926 | if (!bn) { | |
927 | zlog_info("bmp[%s] %s %s table completed (EoR)", | |
928 | bmp->remote, afi2str(afi), | |
929 | safi2str(safi)); | |
930 | bmp_eor(bmp, afi, safi, BMP_PEER_FLAG_L); | |
931 | bmp_eor(bmp, afi, safi, 0); | |
932 | ||
933 | bmp->afistate[afi][safi] = BMP_AFI_LIVE; | |
934 | bmp->syncafi = AFI_MAX; | |
935 | bmp->syncsafi = SAFI_MAX; | |
936 | return true; | |
937 | } | |
938 | bmp->syncpeerid = 0; | |
939 | prefix_copy(&bmp->syncpos, &bn->p); | |
6c29258c YO |
940 | } |
941 | ||
ed18356f DL |
942 | if (bmp->targets->afimon[afi][safi] & BMP_MON_POSTPOLICY) { |
943 | for (bpiter = bn->info; bpiter; bpiter = bpiter->next) { | |
944 | if (!CHECK_FLAG(bpiter->flags, BGP_PATH_VALID)) | |
945 | continue; | |
946 | if (bpiter->peer->qobj_node.nid | |
947 | <= bmp->syncpeerid) | |
948 | continue; | |
949 | if (bpi && bpiter->peer->qobj_node.nid | |
950 | > bpi->peer->qobj_node.nid) | |
951 | continue; | |
952 | bpi = bpiter; | |
953 | } | |
954 | } | |
955 | if (bmp->targets->afimon[afi][safi] & BMP_MON_PREPOLICY) { | |
956 | for (adjiter = bn->adj_in; adjiter; | |
957 | adjiter = adjiter->next) { | |
958 | if (adjiter->peer->qobj_node.nid | |
959 | <= bmp->syncpeerid) | |
960 | continue; | |
961 | if (adjin && adjiter->peer->qobj_node.nid | |
962 | > adjin->peer->qobj_node.nid) | |
963 | continue; | |
964 | adjin = adjiter; | |
965 | } | |
966 | } | |
967 | if (bpi || adjin) | |
968 | break; | |
969 | ||
970 | bn = NULL; | |
971 | } while (1); | |
972 | ||
973 | if (adjin && bpi | |
974 | && adjin->peer->qobj_node.nid < bpi->peer->qobj_node.nid) { | |
975 | bpi = NULL; | |
976 | bmp->syncpeerid = adjin->peer->qobj_node.nid; | |
977 | } else if (adjin && bpi | |
978 | && adjin->peer->qobj_node.nid > bpi->peer->qobj_node.nid) { | |
979 | adjin = NULL; | |
980 | bmp->syncpeerid = bpi->peer->qobj_node.nid; | |
981 | } else if (bpi) { | |
982 | bmp->syncpeerid = bpi->peer->qobj_node.nid; | |
983 | } else if (adjin) { | |
984 | bmp->syncpeerid = adjin->peer->qobj_node.nid; | |
985 | } | |
6c29258c | 986 | |
ed18356f DL |
987 | if (bpi) |
988 | bmp_monitor(bmp, bpi->peer, BMP_PEER_FLAG_L, &bn->p, bpi->attr, | |
989 | afi, safi, bpi->uptime); | |
990 | if (adjin) | |
991 | bmp_monitor(bmp, adjin->peer, 0, &bn->p, adjin->attr, | |
992 | afi, safi, adjin->uptime); | |
6c29258c | 993 | |
ed18356f | 994 | return true; |
6c29258c YO |
995 | } |
996 | ||
ed18356f | 997 | static struct bmp_queue_entry *bmp_pull(struct bmp *bmp) |
6c29258c | 998 | { |
ed18356f DL |
999 | struct bmp_queue_entry *bqe; |
1000 | ||
1001 | bqe = bmp->queuepos; | |
1002 | if (!bqe) | |
1003 | return NULL; | |
1004 | ||
1005 | bmp->queuepos = bmp_qlist_next(&bmp->targets->updlist, bqe); | |
1006 | ||
1007 | bqe->refcount--; | |
1008 | if (!bqe->refcount) { | |
1009 | bmp_qhash_del(&bmp->targets->updhash, bqe); | |
1010 | bmp_qlist_del(&bmp->targets->updlist, bqe); | |
1011 | } | |
1012 | return bqe; | |
1013 | } | |
1014 | ||
1015 | static bool bmp_wrqueue(struct bmp *bmp, struct pullwr *pullwr) | |
1016 | { | |
1017 | struct bmp_queue_entry *bqe; | |
1018 | struct peer *peer; | |
1019 | struct bgp_node *bn; | |
1020 | bool written = false; | |
1021 | ||
1022 | bqe = bmp_pull(bmp); | |
1023 | if (!bqe) | |
1024 | return false; | |
1025 | ||
1026 | afi_t afi = bqe->afi; | |
1027 | safi_t safi = bqe->safi; | |
1028 | ||
1029 | switch (bmp->afistate[afi][safi]) { | |
1030 | case BMP_AFI_INACTIVE: | |
1031 | case BMP_AFI_NEEDSYNC: | |
1032 | goto out; | |
1033 | case BMP_AFI_SYNC: | |
1034 | if (prefix_cmp(&bqe->p, &bmp->syncpos) <= 0) | |
1035 | /* currently syncing but have already passed this | |
1036 | * prefix => send it. */ | |
1037 | break; | |
1038 | ||
1039 | /* currently syncing & haven't reached this prefix yet | |
1040 | * => it'll be sent as part of the table sync, no need here */ | |
1041 | goto out; | |
1042 | case BMP_AFI_LIVE: | |
1043 | break; | |
1044 | } | |
1045 | ||
1046 | peer = QOBJ_GET_TYPESAFE(bqe->peerid, peer); | |
1047 | if (!peer) { | |
1048 | zlog_info("bmp: skipping queued item for deleted peer"); | |
1049 | goto out; | |
1050 | } | |
1051 | if (peer->status != Established) | |
1052 | goto out; | |
1053 | ||
1054 | bn = bgp_node_lookup(bmp->targets->bgp->rib[afi][safi], &bqe->p); | |
1055 | ||
1056 | if (bmp->targets->afimon[afi][safi] & BMP_MON_POSTPOLICY) { | |
1057 | struct bgp_path_info *bpi; | |
1058 | ||
1059 | for (bpi = bn ? bn->info : NULL; bpi; bpi = bpi->next) { | |
1060 | if (!CHECK_FLAG(bpi->flags, BGP_PATH_VALID)) | |
1061 | continue; | |
1062 | if (bpi->peer == peer) | |
1063 | break; | |
1064 | } | |
1065 | ||
1066 | bmp_monitor(bmp, peer, BMP_PEER_FLAG_L, &bqe->p, | |
1067 | bpi ? bpi->attr : NULL, afi, safi, | |
1068 | bpi ? bpi->uptime : monotime(NULL)); | |
1069 | written = true; | |
1070 | } | |
1071 | ||
1072 | if (bmp->targets->afimon[afi][safi] & BMP_MON_PREPOLICY) { | |
1073 | struct bgp_adj_in *adjin; | |
1074 | ||
1075 | for (adjin = bn ? bn->adj_in : NULL; adjin; | |
1076 | adjin = adjin->next) { | |
1077 | if (adjin->peer == peer) | |
1078 | break; | |
1079 | } | |
1080 | bmp_monitor(bmp, peer, BMP_PEER_FLAG_L, &bqe->p, | |
1081 | adjin ? adjin->attr : NULL, afi, safi, | |
1082 | adjin ? adjin->uptime : monotime(NULL)); | |
1083 | written = true; | |
1084 | } | |
1085 | ||
1086 | out: | |
1087 | if (!bqe->refcount) | |
1088 | XFREE(MTYPE_BMP_QUEUE, bqe); | |
1089 | return written; | |
1090 | } | |
1091 | ||
1092 | static void bmp_wrfill(struct bmp *bmp, struct pullwr *pullwr) | |
1093 | { | |
1094 | switch(bmp->state) { | |
1095 | case BMP_PeerUp: | |
1096 | bmp_send_peerup(bmp); | |
1097 | bmp->state = BMP_Run; | |
1098 | break; | |
1099 | ||
1100 | case BMP_Run: | |
1101 | if (bmp_wrmirror(bmp, pullwr)) | |
1102 | break; | |
1103 | if (bmp_wrqueue(bmp, pullwr)) | |
1104 | break; | |
1105 | if (bmp_wrsync(bmp, pullwr)) | |
1106 | break; | |
1107 | break; | |
1108 | } | |
1109 | } | |
1110 | ||
1111 | static void bmp_wrerr(struct bmp *bmp, struct pullwr *pullwr, bool eof) | |
1112 | { | |
1113 | if (eof) | |
1114 | zlog_info("bmp[%s] disconnected", bmp->remote); | |
1115 | else | |
1116 | flog_warn(EC_LIB_SYSTEM_CALL, "bmp[%s] connection error: %s", | |
1117 | bmp->remote, strerror(errno)); | |
1118 | ||
1119 | bmp_close(bmp); | |
1120 | bmp_free(bmp); | |
1121 | } | |
1122 | ||
1123 | static void bmp_process_one(struct bmp_targets *bt, struct bgp *bgp, | |
1124 | afi_t afi, safi_t safi, struct bgp_node *bn, struct peer *peer) | |
1125 | { | |
1126 | struct bmp *bmp; | |
1127 | struct bmp_queue_entry *bqe, bqeref; | |
1128 | size_t refcount; | |
1129 | char buf[256]; | |
1130 | ||
1131 | prefix2str(&bn->p, buf, sizeof(buf)); | |
1132 | ||
1133 | refcount = bmp_session_count(&bt->sessions); | |
1134 | if (refcount == 0) | |
1135 | return; | |
1136 | ||
1137 | memset(&bqeref, 0, sizeof(bqeref)); | |
1138 | prefix_copy(&bqeref.p, &bn->p); | |
1139 | bqeref.peerid = peer->qobj_node.nid; | |
1140 | bqeref.afi = afi; | |
1141 | bqeref.safi = safi; | |
1142 | ||
1143 | bqe = bmp_qhash_find(&bt->updhash, &bqeref); | |
1144 | if (bqe) { | |
1145 | if (bqe->refcount >= refcount) | |
1146 | /* nothing to do here */ | |
1147 | return; | |
1148 | ||
1149 | bmp_qlist_del(&bt->updlist, bqe); | |
1150 | } else { | |
1151 | bqe = XMALLOC(MTYPE_BMP_QUEUE, sizeof(*bqe)); | |
1152 | memcpy(bqe, &bqeref, sizeof(*bqe)); | |
1153 | ||
1154 | bmp_qhash_add(&bt->updhash, bqe); | |
1155 | } | |
1156 | ||
1157 | bqe->refcount = refcount; | |
1158 | bmp_qlist_add_tail(&bt->updlist, bqe); | |
1159 | ||
1160 | frr_each (bmp_session, &bt->sessions, bmp) | |
1161 | if (!bmp->queuepos) | |
1162 | bmp->queuepos = bqe; | |
1163 | } | |
1164 | ||
1165 | static int bmp_process(struct bgp *bgp, afi_t afi, safi_t safi, | |
1166 | struct bgp_node *bn, struct peer *peer, bool withdraw) | |
1167 | { | |
1168 | struct bmp_bgp *bmpbgp = bmp_bgp_find(peer->bgp); | |
1169 | struct bmp_targets *bt; | |
1170 | struct bmp *bmp; | |
1171 | ||
1172 | if (!bmpbgp) | |
1173 | return 0; | |
1174 | ||
1175 | frr_each(bmp_targets, &bmpbgp->targets, bt) { | |
1176 | if (!bt->afimon[afi][safi]) | |
1177 | continue; | |
1178 | ||
1179 | bmp_process_one(bt, bgp, afi, safi, bn, peer); | |
1180 | ||
1181 | frr_each(bmp_session, &bt->sessions, bmp) { | |
1182 | pullwr_bump(bmp->pullwr); | |
1183 | } | |
1184 | } | |
1185 | return 0; | |
1186 | } | |
1187 | ||
1188 | static void bmp_stat_put_u32(struct stream *s, size_t *cnt, uint16_t type, | |
1189 | uint32_t value) | |
1190 | { | |
1191 | stream_putw(s, type); | |
1192 | stream_putw(s, 4); | |
1193 | stream_putl(s, value); | |
1194 | (*cnt)++; | |
1195 | } | |
1196 | ||
1197 | static int bmp_stats(struct thread *thread) | |
1198 | { | |
1199 | struct bmp_targets *bt = THREAD_ARG(thread); | |
1200 | struct stream *s; | |
1201 | struct peer *peer; | |
1202 | struct listnode *node; | |
1203 | struct timeval tv; | |
1204 | ||
1205 | if (bt->stat_msec) | |
1206 | thread_add_timer_msec(bm->master, bmp_stats, bt, bt->stat_msec, | |
1207 | &bt->t_stats); | |
1208 | ||
1209 | gettimeofday(&tv, NULL); | |
1210 | ||
1211 | /* Walk down all peers */ | |
1212 | for (ALL_LIST_ELEMENTS_RO(bt->bgp->peer, node, peer)) { | |
1213 | size_t count = 0, count_pos, len; | |
1214 | ||
1215 | if (peer->status != Established) | |
1216 | continue; | |
1217 | ||
1218 | s = stream_new(BGP_MAX_PACKET_SIZE); | |
1219 | bmp_common_hdr(s, BMP_VERSION_3, BMP_TYPE_STATISTICS_REPORT); | |
1220 | bmp_per_peer_hdr(s, peer, 0, &tv); | |
1221 | ||
1222 | count_pos = stream_get_endp(s); | |
1223 | stream_putl(s, 0); | |
1224 | ||
1225 | bmp_stat_put_u32(s, &count, BMP_STATS_PFX_REJECTED, | |
1226 | peer->stat_pfx_filter); | |
1227 | bmp_stat_put_u32(s, &count, BMP_STATS_UPD_LOOP_ASPATH, | |
1228 | peer->stat_pfx_aspath_loop); | |
1229 | bmp_stat_put_u32(s, &count, BMP_STATS_UPD_LOOP_ORIGINATOR, | |
1230 | peer->stat_pfx_originator_loop); | |
1231 | bmp_stat_put_u32(s, &count, BMP_STATS_UPD_LOOP_CLUSTER, | |
1232 | peer->stat_pfx_cluster_loop); | |
1233 | bmp_stat_put_u32(s, &count, BMP_STATS_PFX_DUP_WITHDRAW, | |
1234 | peer->stat_pfx_dup_withdraw); | |
1235 | bmp_stat_put_u32(s, &count, BMP_STATS_UPD_7606_WITHDRAW, | |
1236 | peer->stat_upd_7606); | |
1237 | bmp_stat_put_u32(s, &count, BMP_STATS_FRR_NH_INVALID, | |
1238 | peer->stat_pfx_nh_invalid); | |
1239 | ||
1240 | stream_putl_at(s, count_pos, count); | |
1241 | ||
1242 | len = stream_get_endp(s); | |
1243 | stream_putl_at(s, BMP_LENGTH_POS, len); | |
1244 | ||
1245 | bmp_send_all(bt->bmpbgp, s); | |
1246 | } | |
1247 | return 0; | |
1248 | } | |
1249 | ||
1250 | static struct bmp *bmp_open(struct bmp_targets *bt, int bmp_sock) | |
1251 | { | |
1252 | union sockunion su, *sumem; | |
1253 | struct prefix p; | |
1254 | int on = 1; | |
1255 | struct access_list *acl = NULL; | |
1256 | enum filter_type ret; | |
1257 | char buf[SU_ADDRSTRLEN]; | |
1258 | struct bmp *bmp; | |
1259 | ||
1260 | sumem = sockunion_getpeername(bmp_sock); | |
1261 | if (!sumem) { | |
1262 | close(bmp_sock); | |
1263 | return NULL; | |
1264 | } | |
1265 | memcpy(&su, sumem, sizeof(su)); | |
1266 | sockunion_free(sumem); | |
1267 | ||
1268 | set_nonblocking(bmp_sock); | |
1269 | set_cloexec(bmp_sock); | |
1270 | shutdown(bmp_sock, SHUT_RD); | |
1271 | ||
1272 | sockunion2hostprefix(&su, &p); | |
1273 | ||
1274 | acl = NULL; | |
1275 | switch (p.family) { | |
1276 | case AF_INET: | |
1277 | acl = access_list_lookup(AFI_IP, bt->acl_name); | |
1278 | break; | |
1279 | case AF_INET6: | |
1280 | acl = access_list_lookup(AFI_IP6, bt->acl6_name); | |
1281 | break; | |
1282 | default: | |
1283 | break; | |
1284 | } | |
1285 | ||
1286 | ret = FILTER_PERMIT; | |
1287 | if (acl) { | |
1288 | ret = access_list_apply(acl, &p); | |
1289 | } | |
1290 | ||
1291 | sockunion2str(&su, buf, SU_ADDRSTRLEN); | |
1292 | snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), ":%u", | |
1293 | su.sa.sa_family == AF_INET | |
1294 | ? ntohs(su.sin.sin_port) | |
1295 | : ntohs(su.sin6.sin6_port)); | |
1296 | ||
1297 | if (ret == FILTER_DENY) { | |
1298 | bt->cnt_aclrefused++; | |
1299 | zlog_info("bmp[%s] connection refused by access-list", buf); | |
1300 | close(bmp_sock); | |
1301 | return NULL; | |
1302 | } | |
1303 | bt->cnt_accept++; | |
1304 | ||
1305 | setsockopt(bmp_sock, SOL_SOCKET, SO_KEEPALIVE, &on, sizeof(on)); | |
1306 | setsockopt(bmp_sock, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on)); | |
1307 | ||
1308 | zlog_info("bmp[%s] connection established", buf); | |
1309 | ||
1310 | /* Allocate new BMP structure and set up default values. */ | |
1311 | bmp = bmp_new(bt, bmp_sock); | |
1312 | strlcpy(bmp->remote, buf, sizeof(bmp->remote)); | |
1313 | ||
1314 | bmp->state = BMP_PeerUp; | |
1315 | bmp->pullwr = pullwr_new(bm->master, bmp_sock, bmp, bmp_wrfill, | |
1316 | bmp_wrerr); | |
1317 | bmp_send_initiation(bmp); | |
1318 | ||
1319 | return bmp; | |
1320 | } | |
1321 | ||
1322 | /* Accept BMP connection. */ | |
1323 | static int bmp_accept(struct thread *thread) | |
1324 | { | |
1325 | union sockunion su; | |
1326 | struct bmp_listener *bl = THREAD_ARG(thread); | |
1327 | int bmp_sock; | |
1328 | ||
1329 | /* We continue hearing BMP socket. */ | |
1330 | thread_add_read(bm->master, bmp_accept, bl, bl->sock, &bl->t_accept); | |
1331 | ||
1332 | memset(&su, 0, sizeof(union sockunion)); | |
1333 | ||
1334 | /* We can handle IPv4 or IPv6 socket. */ | |
1335 | bmp_sock = sockunion_accept(bl->sock, &su); | |
1336 | if (bmp_sock < 0) { | |
1337 | zlog_info("bmp: accept_sock failed: %s\n", | |
1338 | safe_strerror (errno)); | |
1339 | return -1; | |
1340 | } | |
1341 | bmp_open(bl->targets, bmp_sock); | |
1342 | return 0; | |
1343 | } | |
1344 | ||
1345 | static void bmp_close(struct bmp *bmp) | |
1346 | { | |
1347 | struct bmp_queue_entry *bqe; | |
1348 | struct bmp_mirrorq *bmq; | |
1349 | ||
1350 | if (bmp->active) | |
1351 | bmp_active_disconnected(bmp->active); | |
1352 | ||
1353 | while ((bmq = bmp_pull_mirror(bmp))) | |
1354 | if (!bmq->refcount) | |
1355 | XFREE(MTYPE_BMP_MIRRORQ, bmq); | |
1356 | while ((bqe = bmp_pull(bmp))) | |
1357 | if (!bqe->refcount) | |
1358 | XFREE(MTYPE_BMP_QUEUE, bqe); | |
1359 | ||
1360 | THREAD_OFF(bmp->t_read); | |
1361 | pullwr_del(bmp->pullwr); | |
1362 | close(bmp->socket); | |
1363 | } | |
1364 | ||
1365 | static struct bmp_bgp *bmp_bgp_find(struct bgp *bgp) | |
1366 | { | |
1367 | struct bmp_bgp dummy = { .bgp = bgp }; | |
1368 | return bmp_bgph_find(&bmp_bgph, &dummy); | |
1369 | } | |
1370 | ||
1371 | static struct bmp_bgp *bmp_bgp_get(struct bgp *bgp) | |
1372 | { | |
1373 | struct bmp_bgp *bmpbgp; | |
1374 | ||
1375 | bmpbgp = bmp_bgp_find(bgp); | |
1376 | if (bmpbgp) | |
1377 | return bmpbgp; | |
1378 | ||
1379 | bmpbgp = XCALLOC(MTYPE_BMP, sizeof(*bmpbgp)); | |
1380 | bmpbgp->bgp = bgp; | |
1381 | bmpbgp->mirror_qsizelimit = ~0UL; | |
1382 | bmp_mirrorq_init(&bmpbgp->mirrorq); | |
1383 | bmp_bgph_add(&bmp_bgph, bmpbgp); | |
1384 | ||
1385 | return bmpbgp; | |
1386 | } | |
1387 | ||
1388 | static void bmp_bgp_put(struct bmp_bgp *bmpbgp) | |
1389 | { | |
1390 | struct bmp_targets *bt; | |
1391 | ||
1392 | bmp_bgph_del(&bmp_bgph, bmpbgp); | |
1393 | ||
1394 | frr_each_safe(bmp_targets, &bmpbgp->targets, bt) | |
1395 | bmp_targets_put(bt); | |
1396 | ||
1397 | bmp_mirrorq_fini(&bmpbgp->mirrorq); | |
1398 | XFREE(MTYPE_BMP, bmpbgp); | |
1399 | } | |
1400 | ||
1401 | static int bmp_bgp_del(struct bgp *bgp) | |
1402 | { | |
1403 | struct bmp_bgp *bmpbgp = bmp_bgp_find(bgp); | |
1404 | ||
1405 | if (bmpbgp) | |
1406 | bmp_bgp_put(bmpbgp); | |
1407 | return 0; | |
1408 | } | |
1409 | ||
1410 | static struct bmp_bgp_peer *bmp_bgp_peer_find(uint64_t peerid) | |
1411 | { | |
1412 | struct bmp_bgp_peer dummy = { .peerid = peerid }; | |
1413 | return bmp_peerh_find(&bmp_peerh, &dummy); | |
1414 | } | |
1415 | ||
1416 | static struct bmp_bgp_peer *bmp_bgp_peer_get(struct peer *peer) | |
1417 | { | |
1418 | struct bmp_bgp_peer *bbpeer; | |
1419 | ||
1420 | bbpeer = bmp_bgp_peer_find(peer->qobj_node.nid); | |
1421 | if (bbpeer) | |
1422 | return bbpeer; | |
1423 | ||
1424 | bbpeer = XCALLOC(MTYPE_BMP_PEER, sizeof(*bbpeer)); | |
1425 | bbpeer->peerid = peer->qobj_node.nid; | |
1426 | bmp_peerh_add(&bmp_peerh, bbpeer); | |
1427 | ||
1428 | return bbpeer; | |
1429 | } | |
1430 | ||
1431 | static struct bmp_targets *bmp_targets_find1(struct bgp *bgp, const char *name) | |
1432 | { | |
1433 | struct bmp_bgp *bmpbgp = bmp_bgp_find(bgp); | |
1434 | struct bmp_targets dummy; | |
1435 | ||
1436 | if (!bmpbgp) | |
1437 | return NULL; | |
1438 | dummy.name = (char *)name; | |
1439 | return bmp_targets_find(&bmpbgp->targets, &dummy); | |
1440 | } | |
1441 | ||
1442 | static struct bmp_targets *bmp_targets_get(struct bgp *bgp, const char *name) | |
1443 | { | |
1444 | struct bmp_targets *bt; | |
1445 | ||
1446 | bt = bmp_targets_find1(bgp, name); | |
1447 | if (bt) | |
1448 | return bt; | |
1449 | ||
1450 | bt = XCALLOC(MTYPE_BMP_TARGETS, sizeof(*bt)); | |
1451 | bt->name = XSTRDUP(MTYPE_BMP_TARGETSNAME, name); | |
1452 | bt->bgp = bgp; | |
1453 | bt->bmpbgp = bmp_bgp_get(bgp); | |
1454 | bmp_session_init(&bt->sessions); | |
1455 | bmp_qhash_init(&bt->updhash); | |
1456 | bmp_qlist_init(&bt->updlist); | |
1457 | bmp_actives_init(&bt->actives); | |
1458 | bmp_listeners_init(&bt->listeners); | |
1459 | ||
1460 | QOBJ_REG(bt, bmp_targets); | |
1461 | bmp_targets_add(&bt->bmpbgp->targets, bt); | |
1462 | return bt; | |
1463 | } | |
1464 | ||
1465 | static void bmp_targets_put(struct bmp_targets *bt) | |
1466 | { | |
1467 | struct bmp *bmp; | |
1468 | struct bmp_active *ba; | |
1469 | ||
1470 | frr_each_safe (bmp_actives, &bt->actives, ba) | |
1471 | bmp_active_put(ba); | |
1472 | ||
1473 | frr_each_safe(bmp_session, &bt->sessions, bmp) { | |
1474 | bmp_close(bmp); | |
1475 | bmp_free(bmp); | |
1476 | } | |
1477 | ||
1478 | bmp_targets_del(&bt->bmpbgp->targets, bt); | |
1479 | QOBJ_UNREG(bt); | |
1480 | ||
1481 | bmp_listeners_fini(&bt->listeners); | |
1482 | bmp_actives_fini(&bt->actives); | |
1483 | bmp_qhash_fini(&bt->updhash); | |
1484 | bmp_qlist_fini(&bt->updlist); | |
1485 | ||
1486 | XFREE(MTYPE_BMP_ACLNAME, bt->acl_name); | |
1487 | XFREE(MTYPE_BMP_ACLNAME, bt->acl6_name); | |
1488 | bmp_session_fini(&bt->sessions); | |
1489 | ||
1490 | XFREE(MTYPE_BMP_TARGETSNAME, bt->name); | |
1491 | XFREE(MTYPE_BMP_TARGETS, bt); | |
1492 | } | |
1493 | ||
1494 | static struct bmp_listener *bmp_listener_find(struct bmp_targets *bt, | |
1495 | const union sockunion *su, | |
1496 | int port) | |
1497 | { | |
1498 | struct bmp_listener dummy; | |
1499 | dummy.addr = *su; | |
1500 | dummy.port = port; | |
1501 | return bmp_listeners_find(&bt->listeners, &dummy); | |
1502 | } | |
1503 | ||
1504 | static struct bmp_listener *bmp_listener_get(struct bmp_targets *bt, | |
1505 | const union sockunion *su, | |
1506 | int port) | |
1507 | { | |
1508 | struct bmp_listener *bl = bmp_listener_find(bt, su, port); | |
1509 | ||
1510 | if (bl) | |
1511 | return bl; | |
1512 | ||
1513 | bl = XCALLOC(MTYPE_BMP_LISTENER, sizeof(*bl)); | |
1514 | bl->targets = bt; | |
1515 | bl->addr = *su; | |
1516 | bl->port = port; | |
1517 | bl->sock = -1; | |
1518 | ||
1519 | bmp_listeners_add(&bt->listeners, bl); | |
1520 | return bl; | |
1521 | } | |
1522 | ||
1523 | static void bmp_listener_put(struct bmp_listener *bl) | |
1524 | { | |
1525 | bmp_listeners_del(&bl->targets->listeners, bl); | |
1526 | XFREE(MTYPE_BMP_LISTENER, bl); | |
1527 | } | |
1528 | ||
1529 | static void bmp_listener_start(struct bmp_listener *bl) | |
1530 | { | |
1531 | int sock, ret; | |
1532 | ||
1533 | sock = socket(bl->addr.sa.sa_family, SOCK_STREAM, 0); | |
1534 | if (sock < 0) | |
1535 | return; | |
1536 | ||
1537 | sockopt_reuseaddr(sock); | |
1538 | sockopt_reuseport(sock); | |
1539 | sockopt_v6only(bl->addr.sa.sa_family, sock); | |
1540 | set_cloexec(sock); | |
1541 | ||
1542 | ret = sockunion_bind(sock, &bl->addr, bl->port, &bl->addr); | |
1543 | if (ret < 0) | |
1544 | goto out_sock; | |
1545 | ||
1546 | ret = listen(sock, 3); | |
1547 | if (ret < 0) | |
1548 | goto out_sock; | |
1549 | ||
1550 | bl->sock = sock; | |
1551 | thread_add_read(bm->master, bmp_accept, bl, sock, &bl->t_accept); | |
1552 | return; | |
1553 | out_sock: | |
1554 | close(sock); | |
1555 | } | |
1556 | ||
1557 | static void bmp_listener_stop(struct bmp_listener *bl) | |
1558 | { | |
1559 | THREAD_OFF(bl->t_accept); | |
1560 | ||
1561 | if (bl->sock != -1) | |
1562 | close(bl->sock); | |
1563 | bl->sock = -1; | |
1564 | } | |
1565 | ||
1566 | static struct bmp_active *bmp_active_find(struct bmp_targets *bt, | |
1567 | const char *hostname, int port) | |
1568 | { | |
1569 | struct bmp_active dummy; | |
1570 | dummy.hostname = (char *)hostname; | |
1571 | dummy.port = port; | |
1572 | return bmp_actives_find(&bt->actives, &dummy); | |
1573 | } | |
1574 | ||
1575 | static struct bmp_active *bmp_active_get(struct bmp_targets *bt, | |
1576 | const char *hostname, int port) | |
1577 | { | |
1578 | struct bmp_active *ba; | |
1579 | ||
1580 | ba = bmp_active_find(bt, hostname, port); | |
1581 | if (ba) | |
1582 | return ba; | |
1583 | ||
1584 | ba = XCALLOC(MTYPE_BMP_ACTIVE, sizeof(*ba)); | |
1585 | ba->targets = bt; | |
1586 | ba->hostname = XSTRDUP(MTYPE_TMP, hostname); | |
1587 | ba->port = port; | |
1588 | ba->minretry = BMP_DFLT_MINRETRY; | |
1589 | ba->maxretry = BMP_DFLT_MAXRETRY; | |
1590 | ba->socket = -1; | |
1591 | ||
1592 | bmp_actives_add(&bt->actives, ba); | |
1593 | return ba; | |
1594 | } | |
1595 | ||
1596 | static void bmp_active_put(struct bmp_active *ba) | |
1597 | { | |
1598 | THREAD_OFF(ba->t_timer); | |
1599 | THREAD_OFF(ba->t_read); | |
1600 | THREAD_OFF(ba->t_write); | |
1601 | ||
1602 | bmp_actives_del(&ba->targets->actives, ba); | |
1603 | ||
1604 | if (ba->bmp) { | |
1605 | ba->bmp->active = NULL; | |
1606 | bmp_close(ba->bmp); | |
1607 | bmp_free(ba->bmp); | |
1608 | } | |
1609 | if (ba->socket != -1) | |
1610 | close(ba->socket); | |
1611 | ||
1612 | XFREE(MTYPE_TMP, ba->hostname); | |
1613 | XFREE(MTYPE_BMP_ACTIVE, ba); | |
1614 | } | |
1615 | ||
1616 | static void bmp_active_setup(struct bmp_active *ba); | |
1617 | ||
1618 | static void bmp_active_connect(struct bmp_active *ba) | |
1619 | { | |
1620 | enum connect_result res; | |
1621 | char buf[SU_ADDRSTRLEN]; | |
1622 | ||
1623 | for (; ba->addrpos < ba->addrtotal; ba->addrpos++) { | |
1624 | ba->socket = sockunion_socket(&ba->addrs[ba->addrpos]); | |
1625 | if (ba->socket < 0) { | |
1626 | zlog_warn("bmp[%s]: failed to create socket", | |
1627 | ba->hostname); | |
1628 | continue; | |
1629 | } | |
1630 | ||
1631 | set_nonblocking(ba->socket); | |
1632 | res = sockunion_connect(ba->socket, &ba->addrs[ba->addrpos], | |
1633 | htons(ba->port), 0); | |
1634 | switch (res) { | |
1635 | case connect_error: | |
1636 | sockunion2str(&ba->addrs[ba->addrpos], buf, | |
1637 | sizeof(buf)); | |
1638 | zlog_warn("bmp[%s]: failed to connect to %s:%d", | |
1639 | ba->hostname, buf, ba->port); | |
1640 | close(ba->socket); | |
1641 | ba->socket = -1; | |
1642 | continue; | |
1643 | case connect_success: | |
1644 | break; | |
1645 | case connect_in_progress: | |
1646 | bmp_active_setup(ba); | |
1647 | return; | |
1648 | } | |
1649 | } | |
1650 | ||
1651 | /* exhausted all addresses */ | |
1652 | ba->curretry += ba->curretry / 2; | |
1653 | bmp_active_setup(ba); | |
1654 | } | |
1655 | ||
1656 | static void bmp_active_resolved(struct resolver_query *resq, int numaddrs, | |
1657 | union sockunion *addr) | |
1658 | { | |
1659 | struct bmp_active *ba = container_of(resq, struct bmp_active, resq); | |
1660 | unsigned i; | |
1661 | ||
1662 | if (numaddrs <= 0) { | |
1663 | zlog_warn("bmp[%s]: hostname resolution failed", ba->hostname); | |
1664 | ba->curretry += ba->curretry / 2; | |
1665 | bmp_active_setup(ba); | |
1666 | return; | |
1667 | } | |
1668 | if (numaddrs > (int)array_size(ba->addrs)) | |
1669 | numaddrs = array_size(ba->addrs); | |
1670 | ||
1671 | ba->addrpos = 0; | |
1672 | ba->addrtotal = numaddrs; | |
1673 | for (i = 0; i < ba->addrtotal; i++) | |
1674 | memcpy(&ba->addrs[i], &addr[i], sizeof(ba->addrs[0])); | |
1675 | ||
1676 | bmp_active_connect(ba); | |
1677 | } | |
1678 | ||
1679 | static int bmp_active_thread(struct thread *t) | |
1680 | { | |
1681 | struct bmp_active *ba = THREAD_ARG(t); | |
1682 | socklen_t slen; | |
1683 | int status, ret; | |
1684 | char buf[SU_ADDRSTRLEN]; | |
1685 | ||
1686 | /* all 3 end up here, though only timer or read+write are active | |
1687 | * at a time */ | |
1688 | THREAD_OFF(ba->t_timer); | |
1689 | THREAD_OFF(ba->t_read); | |
1690 | THREAD_OFF(ba->t_write); | |
1691 | ||
1692 | if (ba->socket == -1) { | |
1693 | resolver_resolve(&ba->resq, AF_UNSPEC, ba->hostname, | |
1694 | bmp_active_resolved); | |
1695 | return 0; | |
1696 | } | |
1697 | ||
1698 | slen = sizeof(status); | |
1699 | ret = getsockopt(ba->socket, SOL_SOCKET, SO_ERROR, (void *)&status, | |
1700 | &slen); | |
1701 | ||
1702 | sockunion2str(&ba->addrs[ba->addrpos], buf, sizeof(buf)); | |
1703 | if (ret < 0 || status != 0) { | |
1704 | zlog_warn("bmp[%s]: failed to connect to %s:%d", | |
1705 | ba->hostname, buf, ba->port); | |
1706 | goto out_next; | |
1707 | } | |
1708 | ||
1709 | zlog_warn("bmp[%s]: outbound connection to %s:%d", | |
1710 | ba->hostname, buf, ba->port); | |
1711 | ||
1712 | ba->bmp = bmp_open(ba->targets, ba->socket); | |
1713 | if (!ba->bmp) | |
1714 | goto out_next; | |
1715 | ||
1716 | ba->bmp->active = ba; | |
1717 | ba->socket = -1; | |
1718 | ba->curretry = ba->minretry; | |
1719 | return 0; | |
1720 | ||
1721 | out_next: | |
1722 | close(ba->socket); | |
1723 | ba->socket = -1; | |
1724 | ba->addrpos++; | |
1725 | bmp_active_connect(ba); | |
1726 | return 0; | |
1727 | } | |
1728 | ||
1729 | static void bmp_active_disconnected(struct bmp_active *ba) | |
1730 | { | |
1731 | ba->bmp = NULL; | |
1732 | bmp_active_setup(ba); | |
1733 | } | |
1734 | ||
1735 | static void bmp_active_setup(struct bmp_active *ba) | |
1736 | { | |
1737 | THREAD_OFF(ba->t_timer); | |
1738 | THREAD_OFF(ba->t_read); | |
1739 | THREAD_OFF(ba->t_write); | |
1740 | ||
1741 | if (ba->bmp) | |
1742 | return; | |
1743 | if (ba->resq.callback) | |
1744 | return; | |
1745 | ||
1746 | if (ba->curretry > ba->maxretry) | |
1747 | ba->curretry = ba->maxretry; | |
1748 | ||
1749 | if (ba->socket == -1) | |
1750 | thread_add_timer_msec(bm->master, bmp_active_thread, ba, | |
1751 | ba->curretry, &ba->t_timer); | |
1752 | else { | |
1753 | thread_add_read(bm->master, bmp_active_thread, ba, ba->socket, | |
1754 | &ba->t_read); | |
1755 | thread_add_write(bm->master, bmp_active_thread, ba, ba->socket, | |
1756 | &ba->t_write); | |
1757 | } | |
1758 | } | |
1759 | ||
1760 | static struct cmd_node bmp_node = {BMP_NODE, "%s(config-bgp-bmp)# "}; | |
1761 | ||
1762 | #define BMP_STR "BGP Monitoring Protocol\n" | |
1763 | ||
1764 | #ifndef VTYSH_EXTRACT_PL | |
1765 | #include "bgp_bmp_clippy.c" | |
1766 | #endif | |
1767 | ||
1768 | DEFPY_NOSH(bmp_targets_main, | |
1769 | bmp_targets_cmd, | |
1770 | "bmp targets BMPTARGETS", | |
1771 | BMP_STR | |
1772 | "Create BMP target group\n" | |
1773 | "Name of the BMP target group\n") | |
1774 | { | |
1775 | VTY_DECLVAR_CONTEXT(bgp, bgp); | |
1776 | struct bmp_targets *bt; | |
1777 | ||
1778 | bt = bmp_targets_get(bgp, bmptargets); | |
1779 | ||
1780 | VTY_PUSH_CONTEXT_SUB(BMP_NODE, bt); | |
1781 | return CMD_SUCCESS; | |
1782 | } | |
1783 | ||
1784 | DEFPY(no_bmp_targets_main, | |
1785 | no_bmp_targets_cmd, | |
1786 | "no bmp targets BMPTARGETS", | |
1787 | NO_STR | |
1788 | BMP_STR | |
1789 | "Delete BMP target group\n" | |
1790 | "Name of the BMP target group\n") | |
1791 | { | |
1792 | VTY_DECLVAR_CONTEXT(bgp, bgp); | |
1793 | struct bmp_targets *bt; | |
1794 | ||
1795 | bt = bmp_targets_find1(bgp, bmptargets); | |
1796 | if (!bt) { | |
1797 | vty_out(vty, "%% BMP target group not found\n"); | |
1798 | return CMD_WARNING; | |
1799 | } | |
1800 | bmp_targets_put(bt); | |
1801 | return CMD_SUCCESS; | |
1802 | } | |
1803 | ||
1804 | DEFPY(bmp_listener_main, | |
1805 | bmp_listener_cmd, | |
1806 | "bmp listener <X:X::X:X|A.B.C.D> port (1-65535)", | |
1807 | BMP_STR | |
1808 | "Listen for inbound BMP connections\n" | |
1809 | "IPv6 address to listen on\n" | |
1810 | "IPv4 address to listen on\n" | |
1811 | "TCP Port number\n" | |
1812 | "TCP Port number\n") | |
1813 | { | |
1814 | VTY_DECLVAR_CONTEXT_SUB(bmp_targets, bt); | |
1815 | struct bmp_listener *bl; | |
1816 | ||
1817 | bl = bmp_listener_get(bt, listener, port); | |
1818 | if (bl->sock == -1) | |
1819 | bmp_listener_start(bl); | |
1820 | ||
1821 | return CMD_SUCCESS; | |
1822 | } | |
1823 | ||
1824 | DEFPY(no_bmp_listener_main, | |
1825 | no_bmp_listener_cmd, | |
1826 | "no bmp listener <X:X::X:X|A.B.C.D> port (1-65535)", | |
1827 | NO_STR | |
1828 | BMP_STR | |
1829 | "Create BMP listener\n" | |
1830 | "IPv6 address to listen on\n" | |
1831 | "IPv4 address to listen on\n" | |
1832 | "TCP Port number\n" | |
1833 | "TCP Port number\n") | |
1834 | { | |
1835 | VTY_DECLVAR_CONTEXT_SUB(bmp_targets, bt); | |
1836 | struct bmp_listener *bl; | |
1837 | ||
1838 | bl = bmp_listener_find(bt, listener, port); | |
1839 | if (!bl) { | |
1840 | vty_out(vty, "%% BMP listener not found\n"); | |
1841 | return CMD_WARNING; | |
1842 | } | |
1843 | bmp_listener_stop(bl); | |
1844 | bmp_listener_put(bl); | |
1845 | return CMD_SUCCESS; | |
1846 | } | |
1847 | ||
1848 | DEFPY(bmp_connect, | |
1849 | bmp_connect_cmd, | |
1850 | "[no] bmp connect HOSTNAME port (1-65535) " | |
1851 | "{min-retry (100-86400000)" | |
1852 | "|max-retry (100-86400000)}", | |
1853 | NO_STR | |
1854 | BMP_STR | |
1855 | "Actively establish connection to monitoring station\n" | |
1856 | "Monitoring station hostname or address\n" | |
1857 | "TCP port\n" | |
1858 | "TCP port\n" | |
1859 | "Minimum connection retry interval\n" | |
1860 | "Minimum connection retry interval (milliseconds)\n" | |
1861 | "Maximum connection retry interval\n" | |
1862 | "Maximum connection retry interval (milliseconds)\n") | |
1863 | { | |
1864 | VTY_DECLVAR_CONTEXT_SUB(bmp_targets, bt); | |
1865 | struct bmp_active *ba; | |
1866 | ||
1867 | if (no) { | |
1868 | ba = bmp_active_find(bt, hostname, port); | |
1869 | if (!ba) { | |
1870 | vty_out(vty, "%% No such active connection found\n"); | |
1871 | return CMD_WARNING; | |
1872 | } | |
1873 | bmp_active_put(ba); | |
1874 | return CMD_SUCCESS; | |
1875 | } | |
1876 | ||
1877 | ba = bmp_active_get(bt, hostname, port); | |
1878 | if (min_retry_str) | |
1879 | ba->minretry = min_retry; | |
1880 | if (max_retry_str) | |
1881 | ba->maxretry = max_retry; | |
1882 | ba->curretry = ba->minretry; | |
1883 | bmp_active_setup(ba); | |
1884 | ||
1885 | return CMD_SUCCESS; | |
1886 | } | |
1887 | ||
1888 | DEFPY(bmp_acl, | |
1889 | bmp_acl_cmd, | |
1890 | "[no] <ip|ipv6>$af access-list WORD", | |
1891 | NO_STR | |
1892 | IP_STR | |
1893 | IPV6_STR | |
1894 | "Access list to restrict BMP sessions\n" | |
1895 | "Access list name\n") | |
1896 | { | |
1897 | VTY_DECLVAR_CONTEXT_SUB(bmp_targets, bt); | |
1898 | char **what; | |
1899 | ||
1900 | if (no) | |
1901 | access_list = NULL; | |
1902 | if (!strcmp(af, "ipv6")) | |
1903 | what = &bt->acl6_name; | |
1904 | else | |
1905 | what = &bt->acl_name; | |
1906 | ||
1907 | XFREE(MTYPE_BMP_ACLNAME, *what); | |
1908 | if (access_list) | |
1909 | *what = XSTRDUP(MTYPE_BMP_ACLNAME, access_list); | |
1910 | ||
1911 | return CMD_SUCCESS; | |
1912 | } | |
1913 | ||
1914 | DEFPY(bmp_stats_cfg, | |
1915 | bmp_stats_cmd, | |
1916 | "[no] bmp stats [interval (100-86400000)]", | |
1917 | NO_STR | |
1918 | BMP_STR | |
1919 | "Send BMP statistics messages\n" | |
1920 | "Specify BMP stats interval\n" | |
1921 | "Interval (milliseconds) to send BMP Stats in\n") | |
1922 | { | |
1923 | VTY_DECLVAR_CONTEXT_SUB(bmp_targets, bt); | |
1924 | ||
1925 | THREAD_OFF(bt->t_stats); | |
1926 | if (no) | |
1927 | bt->stat_msec = 0; | |
1928 | else if (interval_str) | |
1929 | bt->stat_msec = interval; | |
1930 | else | |
1931 | bt->stat_msec = BMP_STAT_DEFAULT_TIMER; | |
1932 | ||
1933 | if (bt->stat_msec) | |
1934 | thread_add_timer_msec(bm->master, bmp_stats, bt, bt->stat_msec, | |
1935 | &bt->t_stats); | |
1936 | return CMD_SUCCESS; | |
1937 | } | |
1938 | ||
1939 | DEFPY(bmp_monitor_cfg, | |
1940 | bmp_monitor_cmd, | |
1941 | "[no] bmp monitor "BGP_AFI_CMD_STR" <unicast|multicast> <pre-policy|post-policy>$policy", | |
1942 | NO_STR | |
1943 | BMP_STR | |
1944 | "Send BMP route monitoring messages\n" | |
1945 | BGP_AFI_HELP_STR | |
1946 | "Address family modifier\n" | |
1947 | "Address family modifier\n" | |
1948 | "Send state before policy and filter processing\n" | |
1949 | "Send state with policy and filters applied\n") | |
1950 | { | |
1951 | int index = 0; | |
1952 | uint8_t flag, prev; | |
1953 | afi_t afi; | |
1954 | safi_t safi; | |
1955 | ||
1956 | VTY_DECLVAR_CONTEXT_SUB(bmp_targets, bt); | |
1957 | struct bmp *bmp; | |
1958 | ||
1959 | argv_find_and_parse_afi(argv, argc, &index, &afi); | |
1960 | argv_find_and_parse_safi(argv, argc, &index, &safi); | |
1961 | ||
1962 | if (policy[1] == 'r') | |
1963 | flag = BMP_MON_PREPOLICY; | |
1964 | else | |
1965 | flag = BMP_MON_POSTPOLICY; | |
1966 | ||
1967 | prev = bt->afimon[afi][safi]; | |
1968 | if (no) | |
1969 | bt->afimon[afi][safi] &= ~flag; | |
1970 | else | |
1971 | bt->afimon[afi][safi] |= flag; | |
1972 | ||
1973 | if (prev == bt->afimon[afi][safi]) | |
1974 | return CMD_SUCCESS; | |
1975 | ||
1976 | frr_each (bmp_session, &bt->sessions, bmp) { | |
1977 | if (bmp->syncafi == afi && bmp->syncsafi == safi) { | |
1978 | bmp->syncafi = AFI_MAX; | |
1979 | bmp->syncsafi = SAFI_MAX; | |
1980 | } | |
1981 | ||
1982 | if (!bt->afimon[afi][safi]) { | |
1983 | bmp->afistate[afi][safi] = BMP_AFI_INACTIVE; | |
1984 | continue; | |
1985 | } | |
1986 | ||
1987 | bmp->afistate[afi][safi] = BMP_AFI_NEEDSYNC; | |
1988 | } | |
1989 | ||
1990 | return CMD_SUCCESS; | |
1991 | } | |
1992 | ||
1993 | DEFPY(bmp_mirror_cfg, | |
1994 | bmp_mirror_cmd, | |
1995 | "[no] bmp mirror", | |
1996 | NO_STR | |
1997 | BMP_STR | |
1998 | "Send BMP route mirroring messages\n") | |
1999 | { | |
2000 | VTY_DECLVAR_CONTEXT_SUB(bmp_targets, bt); | |
2001 | struct bmp *bmp; | |
2002 | ||
2003 | if (bt->mirror == !no) | |
2004 | return CMD_SUCCESS; | |
2005 | ||
2006 | bt->mirror = !no; | |
2007 | if (bt->mirror) | |
2008 | return CMD_SUCCESS; | |
2009 | ||
2010 | frr_each (bmp_session, &bt->sessions, bmp) { | |
2011 | struct bmp_mirrorq *bmq; | |
2012 | ||
2013 | while ((bmq = bmp_pull_mirror(bmp))) | |
2014 | if (!bmq->refcount) | |
2015 | XFREE(MTYPE_BMP_MIRRORQ, bmq); | |
2016 | } | |
2017 | return CMD_SUCCESS; | |
2018 | } | |
2019 | ||
2020 | DEFPY(bmp_mirror_limit_cfg, | |
2021 | bmp_mirror_limit_cmd, | |
2022 | "bmp mirror buffer-limit (0-4294967294)", | |
2023 | BMP_STR | |
2024 | "Route Mirroring settings\n" | |
2025 | "Configure maximum memory used for buffered mirroring messages\n" | |
2026 | "Limit in bytes\n") | |
2027 | { | |
2028 | VTY_DECLVAR_CONTEXT(bgp, bgp); | |
2029 | struct bmp_bgp *bmpbgp; | |
2030 | ||
2031 | bmpbgp = bmp_bgp_get(bgp); | |
2032 | bmpbgp->mirror_qsizelimit = buffer_limit; | |
2033 | ||
2034 | return CMD_SUCCESS; | |
2035 | } | |
2036 | ||
2037 | DEFPY(no_bmp_mirror_limit_cfg, | |
2038 | no_bmp_mirror_limit_cmd, | |
2039 | "no bmp mirror buffer-limit [(0-4294967294)]", | |
2040 | NO_STR | |
2041 | BMP_STR | |
2042 | "Route Mirroring settings\n" | |
2043 | "Configure maximum memory used for buffered mirroring messages\n" | |
2044 | "Limit in bytes\n") | |
2045 | { | |
2046 | VTY_DECLVAR_CONTEXT(bgp, bgp); | |
2047 | struct bmp_bgp *bmpbgp; | |
2048 | ||
2049 | bmpbgp = bmp_bgp_get(bgp); | |
2050 | bmpbgp->mirror_qsizelimit = ~0UL; | |
2051 | ||
2052 | return CMD_SUCCESS; | |
2053 | } | |
2054 | ||
2055 | ||
2056 | DEFPY(show_bmp, | |
2057 | show_bmp_cmd, | |
2058 | "show bmp", | |
2059 | SHOW_STR | |
2060 | BMP_STR) | |
2061 | { | |
2062 | struct bmp_bgp *bmpbgp; | |
2063 | struct bmp_targets *bt; | |
2064 | struct bmp_listener *bl; | |
2065 | struct bmp *bmp; | |
2066 | struct ttable *tt; | |
2067 | char buf[SU_ADDRSTRLEN]; | |
2068 | ||
2069 | frr_each(bmp_bgph, &bmp_bgph, bmpbgp) { | |
2070 | vty_out(vty, "BMP state for BGP %s:\n\n", | |
2071 | bmpbgp->bgp->name_pretty); | |
2072 | vty_out(vty, " Route Mirroring %9zu bytes (%zu messages) pending\n", | |
2073 | bmpbgp->mirror_qsize, | |
2074 | bmp_mirrorq_count(&bmpbgp->mirrorq)); | |
2075 | vty_out(vty, " %9zu bytes maximum buffer used\n", | |
2076 | bmpbgp->mirror_qsizemax); | |
2077 | if (bmpbgp->mirror_qsizelimit != ~0UL) | |
2078 | vty_out(vty, " %9zu bytes buffer size limit\n", | |
2079 | bmpbgp->mirror_qsizelimit); | |
2080 | vty_out(vty, "\n"); | |
2081 | ||
2082 | frr_each(bmp_targets, &bmpbgp->targets, bt) { | |
2083 | vty_out(vty, " Targets \"%s\":\n", bt->name); | |
2084 | vty_out(vty, " Route Mirroring %sabled\n", | |
2085 | bt->mirror ? "en" : "dis"); | |
2086 | ||
2087 | afi_t afi; | |
2088 | safi_t safi; | |
2089 | ||
2090 | FOREACH_AFI_SAFI (afi, safi) { | |
2091 | const char *str = NULL; | |
2092 | ||
2093 | switch (bt->afimon[afi][safi]) { | |
2094 | case BMP_MON_PREPOLICY: | |
2095 | str = "pre-policy"; | |
2096 | break; | |
2097 | case BMP_MON_POSTPOLICY: | |
2098 | str = "post-policy"; | |
2099 | break; | |
2100 | case BMP_MON_PREPOLICY | BMP_MON_POSTPOLICY: | |
2101 | str = "pre-policy and post-policy"; | |
2102 | break; | |
2103 | } | |
2104 | if (!str) | |
2105 | continue; | |
2106 | vty_out(vty, " Route Monitoring %s %s %s\n", | |
2107 | afi2str(afi), safi2str(safi), str); | |
2108 | } | |
2109 | ||
2110 | vty_out(vty, " Listeners:\n"); | |
2111 | frr_each (bmp_listeners, &bt->listeners, bl) | |
2112 | vty_out(vty, " %s:%d\n", | |
2113 | sockunion2str(&bl->addr, buf, | |
2114 | SU_ADDRSTRLEN), bl->port); | |
2115 | ||
2116 | vty_out(vty, "\n %zu connected clients:\n", | |
2117 | bmp_session_count(&bt->sessions)); | |
2118 | tt = ttable_new(&ttable_styles[TTSTYLE_BLANK]); | |
2119 | ttable_add_row(tt, "remote|uptime|MonSent|MirrSent|MirrLost|ByteSent|ByteQ|ByteQKernel"); | |
2120 | ttable_rowseps(tt, 0, BOTTOM, true, '-'); | |
2121 | ||
2122 | frr_each (bmp_session, &bt->sessions, bmp) { | |
2123 | uint64_t total; | |
2124 | size_t q, kq; | |
2125 | ||
2126 | pullwr_stats(bmp->pullwr, &total, &q, &kq); | |
2127 | ||
2128 | ttable_add_row(tt, "%s|-|%Lu|%Lu|%Lu|%Lu|%zu|%zu", | |
2129 | bmp->remote, | |
2130 | bmp->cnt_update, | |
2131 | bmp->cnt_mirror, | |
2132 | bmp->cnt_mirror_overruns, | |
2133 | total, q, kq); | |
2134 | } | |
2135 | char *out = ttable_dump(tt, "\n"); | |
2136 | vty_out(vty, "%s", out); | |
2137 | XFREE(MTYPE_TMP, out); | |
2138 | ttable_del(tt); | |
2139 | vty_out(vty, "\n"); | |
2140 | } | |
2141 | } | |
2142 | ||
2143 | return CMD_SUCCESS; | |
2144 | } | |
2145 | ||
2146 | static int bmp_config_write(struct bgp *bgp, struct vty *vty) | |
2147 | { | |
2148 | struct bmp_bgp *bmpbgp = bmp_bgp_find(bgp); | |
2149 | struct bmp_targets *bt; | |
2150 | struct bmp_listener *bl; | |
2151 | struct bmp_active *ba; | |
2152 | char buf[SU_ADDRSTRLEN]; | |
2153 | afi_t afi; | |
2154 | safi_t safi; | |
2155 | ||
2156 | if (!bmpbgp) | |
2157 | return 0; | |
2158 | ||
2159 | if (bmpbgp->mirror_qsizelimit != ~0UL) | |
2160 | vty_out(vty, " !\n bmp mirror buffer-limit %zu\n", | |
2161 | bmpbgp->mirror_qsizelimit); | |
2162 | ||
2163 | frr_each(bmp_targets, &bmpbgp->targets, bt) { | |
2164 | vty_out(vty, " !\n bmp targets %s\n", bt->name); | |
2165 | ||
2166 | if (bt->acl6_name) | |
2167 | vty_out(vty, " ipv6 access-list %s\n", bt->acl6_name); | |
2168 | if (bt->acl_name) | |
2169 | vty_out(vty, " ip access-list %s\n", bt->acl_name); | |
2170 | ||
2171 | if (bt->stat_msec) | |
2172 | vty_out(vty, " bmp stats interval %d\n", | |
2173 | bt->stat_msec); | |
2174 | ||
2175 | if (bt->mirror) | |
2176 | vty_out(vty, " bmp mirror\n"); | |
2177 | ||
2178 | FOREACH_AFI_SAFI (afi, safi) { | |
2179 | const char *afi_str = (afi == AFI_IP) ? "ipv4" : "ipv6"; | |
2180 | ||
2181 | if (bt->afimon[afi][safi] & BMP_MON_PREPOLICY) | |
2182 | vty_out(vty, " bmp monitor %s %s pre-policy\n", | |
2183 | afi_str, safi2str(safi)); | |
2184 | if (bt->afimon[afi][safi] & BMP_MON_POSTPOLICY) | |
2185 | vty_out(vty, " bmp monitor %s %s post-policy\n", | |
2186 | afi_str, safi2str(safi)); | |
2187 | } | |
2188 | frr_each (bmp_listeners, &bt->listeners, bl) | |
2189 | vty_out(vty, " \n bmp listener %s port %d\n", | |
2190 | sockunion2str(&bl->addr, buf, SU_ADDRSTRLEN), | |
2191 | bl->port); | |
2192 | ||
2193 | frr_each (bmp_actives, &bt->actives, ba) | |
2194 | vty_out(vty, " bmp connect %s port %u min-retry %u max-retry %u\n", | |
2195 | ba->hostname, ba->port, ba->minretry, ba->maxretry); | |
2196 | } | |
2197 | ||
2198 | return 0; | |
2199 | } | |
2200 | ||
2201 | static int bgp_bmp_init(struct thread_master *tm) | |
2202 | { | |
2203 | install_node(&bmp_node, NULL); | |
2204 | install_default(BMP_NODE); | |
2205 | install_element(BGP_NODE, &bmp_targets_cmd); | |
2206 | install_element(BGP_NODE, &no_bmp_targets_cmd); | |
2207 | ||
2208 | install_element(BMP_NODE, &bmp_listener_cmd); | |
2209 | install_element(BMP_NODE, &no_bmp_listener_cmd); | |
2210 | install_element(BMP_NODE, &bmp_connect_cmd); | |
2211 | install_element(BMP_NODE, &bmp_acl_cmd); | |
2212 | install_element(BMP_NODE, &bmp_stats_cmd); | |
2213 | install_element(BMP_NODE, &bmp_monitor_cmd); | |
2214 | install_element(BMP_NODE, &bmp_mirror_cmd); | |
2215 | ||
2216 | install_element(BGP_NODE, &bmp_mirror_limit_cmd); | |
2217 | install_element(BGP_NODE, &no_bmp_mirror_limit_cmd); | |
2218 | ||
2219 | install_element(VIEW_NODE, &show_bmp_cmd); | |
2220 | ||
2221 | resolver_init(tm); | |
0ba4eeec | 2222 | return 0; |
6c29258c YO |
2223 | } |
2224 | ||
0ba4eeec DL |
2225 | static int bgp_bmp_module_init(void) |
2226 | { | |
2227 | hook_register(bgp_packet_dump, bmp_mirror_packet); | |
ed18356f DL |
2228 | hook_register(bgp_packet_send, bmp_outgoing_packet); |
2229 | hook_register(peer_established, bmp_peer_established); | |
2230 | hook_register(peer_backward_transition, bmp_peer_backward); | |
2231 | hook_register(bgp_process, bmp_process); | |
2232 | hook_register(bgp_inst_config_write, bmp_config_write); | |
2233 | hook_register(bgp_inst_delete, bmp_bgp_del); | |
0ba4eeec DL |
2234 | hook_register(frr_late_init, bgp_bmp_init); |
2235 | return 0; | |
2236 | } | |
6c29258c | 2237 | |
0ba4eeec DL |
2238 | FRR_MODULE_SETUP(.name = "bgpd_bmp", .version = FRR_VERSION, |
2239 | .description = "bgpd BMP module", | |
2240 | .init = bgp_bmp_module_init) |