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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" | |
e0302d7e | 52 | #include "bgpd/bgp_trace.h" |
ed18356f DL |
53 | |
54 | static void bmp_close(struct bmp *bmp); | |
55 | static struct bmp_bgp *bmp_bgp_find(struct bgp *bgp); | |
56 | static void bmp_targets_put(struct bmp_targets *bt); | |
57 | static struct bmp_bgp_peer *bmp_bgp_peer_find(uint64_t peerid); | |
58 | static struct bmp_bgp_peer *bmp_bgp_peer_get(struct peer *peer); | |
59 | static void bmp_active_disconnected(struct bmp_active *ba); | |
60 | static void bmp_active_put(struct bmp_active *ba); | |
61 | ||
bf8d3d6a | 62 | DEFINE_MGROUP(BMP, "BMP (BGP Monitoring Protocol)"); |
ed18356f | 63 | |
bf8d3d6a DL |
64 | DEFINE_MTYPE_STATIC(BMP, BMP_CONN, "BMP connection state"); |
65 | DEFINE_MTYPE_STATIC(BMP, BMP_TARGETS, "BMP targets"); | |
66 | DEFINE_MTYPE_STATIC(BMP, BMP_TARGETSNAME, "BMP targets name"); | |
67 | DEFINE_MTYPE_STATIC(BMP, BMP_LISTENER, "BMP listener"); | |
68 | DEFINE_MTYPE_STATIC(BMP, BMP_ACTIVE, "BMP active connection config"); | |
69 | DEFINE_MTYPE_STATIC(BMP, BMP_ACLNAME, "BMP access-list name"); | |
70 | DEFINE_MTYPE_STATIC(BMP, BMP_QUEUE, "BMP update queue item"); | |
71 | DEFINE_MTYPE_STATIC(BMP, BMP, "BMP instance state"); | |
72 | DEFINE_MTYPE_STATIC(BMP, BMP_MIRRORQ, "BMP route mirroring buffer"); | |
73 | DEFINE_MTYPE_STATIC(BMP, BMP_PEER, "BMP per BGP peer data"); | |
74 | DEFINE_MTYPE_STATIC(BMP, BMP_OPEN, "BMP stored BGP OPEN message"); | |
ed18356f | 75 | |
96244aca | 76 | DEFINE_QOBJ_TYPE(bmp_targets); |
ed18356f DL |
77 | |
78 | static int bmp_bgp_cmp(const struct bmp_bgp *a, const struct bmp_bgp *b) | |
79 | { | |
80 | if (a->bgp < b->bgp) | |
81 | return -1; | |
82 | if (a->bgp > b->bgp) | |
83 | return 1; | |
84 | return 0; | |
85 | } | |
86 | ||
87 | static uint32_t bmp_bgp_hash(const struct bmp_bgp *e) | |
88 | { | |
89 | return jhash(&e->bgp, sizeof(e->bgp), 0x55aa5a5a); | |
90 | } | |
6c29258c | 91 | |
ed18356f DL |
92 | DECLARE_HASH(bmp_bgph, struct bmp_bgp, bbi, bmp_bgp_cmp, bmp_bgp_hash) |
93 | ||
94 | struct bmp_bgph_head bmp_bgph; | |
95 | ||
96 | static int bmp_bgp_peer_cmp(const struct bmp_bgp_peer *a, | |
97 | const struct bmp_bgp_peer *b) | |
98 | { | |
99 | if (a->peerid < b->peerid) | |
100 | return -1; | |
101 | if (a->peerid > b->peerid) | |
102 | return 1; | |
103 | return 0; | |
104 | } | |
105 | ||
106 | static uint32_t bmp_bgp_peer_hash(const struct bmp_bgp_peer *e) | |
107 | { | |
108 | return e->peerid; | |
109 | } | |
6c29258c | 110 | |
ed18356f DL |
111 | DECLARE_HASH(bmp_peerh, struct bmp_bgp_peer, bpi, |
112 | bmp_bgp_peer_cmp, bmp_bgp_peer_hash) | |
6c29258c | 113 | |
ed18356f | 114 | struct bmp_peerh_head bmp_peerh; |
6c29258c | 115 | |
ed18356f | 116 | DECLARE_LIST(bmp_mirrorq, struct bmp_mirrorq, bmi) |
6c29258c | 117 | |
ed18356f | 118 | /* listener management */ |
6c29258c | 119 | |
ed18356f DL |
120 | static int bmp_listener_cmp(const struct bmp_listener *a, |
121 | const struct bmp_listener *b) | |
6c29258c | 122 | { |
ed18356f | 123 | int c; |
6c29258c | 124 | |
ed18356f DL |
125 | c = sockunion_cmp(&a->addr, &b->addr); |
126 | if (c) | |
127 | return c; | |
128 | if (a->port < b->port) | |
129 | return -1; | |
130 | if (a->port > b->port) | |
131 | return 1; | |
132 | return 0; | |
133 | } | |
6c29258c | 134 | |
ed18356f DL |
135 | DECLARE_SORTLIST_UNIQ(bmp_listeners, struct bmp_listener, bli, bmp_listener_cmp) |
136 | ||
137 | static int bmp_targets_cmp(const struct bmp_targets *a, | |
138 | const struct bmp_targets *b) | |
139 | { | |
140 | return strcmp(a->name, b->name); | |
6c29258c YO |
141 | } |
142 | ||
ed18356f DL |
143 | DECLARE_SORTLIST_UNIQ(bmp_targets, struct bmp_targets, bti, bmp_targets_cmp) |
144 | ||
145 | DECLARE_LIST(bmp_session, struct bmp, bsi) | |
146 | ||
147 | DECLARE_DLIST(bmp_qlist, struct bmp_queue_entry, bli) | |
148 | ||
149 | static int bmp_qhash_cmp(const struct bmp_queue_entry *a, | |
150 | const struct bmp_queue_entry *b) | |
6c29258c | 151 | { |
ed18356f | 152 | int ret; |
87102aa0 | 153 | if (a->afi == AFI_L2VPN && a->safi == SAFI_EVPN && b->afi == AFI_L2VPN |
154 | && b->safi == SAFI_EVPN) { | |
155 | ret = prefix_cmp(&a->rd, &b->rd); | |
156 | if (ret) | |
157 | return ret; | |
158 | } else if (a->afi == AFI_L2VPN && a->safi == SAFI_EVPN) | |
159 | return 1; | |
160 | else if (b->afi == AFI_L2VPN && b->safi == SAFI_EVPN) | |
161 | return -1; | |
162 | ||
ed18356f DL |
163 | ret = prefix_cmp(&a->p, &b->p); |
164 | if (ret) | |
165 | return ret; | |
166 | ret = memcmp(&a->peerid, &b->peerid, | |
167 | offsetof(struct bmp_queue_entry, refcount) - | |
168 | offsetof(struct bmp_queue_entry, peerid)); | |
169 | return ret; | |
6c29258c YO |
170 | } |
171 | ||
ed18356f | 172 | static uint32_t bmp_qhash_hkey(const struct bmp_queue_entry *e) |
6c29258c | 173 | { |
ed18356f DL |
174 | uint32_t key; |
175 | ||
176 | key = prefix_hash_key((void *)&e->p); | |
177 | key = jhash(&e->peerid, | |
87102aa0 | 178 | offsetof(struct bmp_queue_entry, refcount) |
179 | - offsetof(struct bmp_queue_entry, peerid), | |
180 | key); | |
181 | if (e->afi == AFI_L2VPN && e->safi == SAFI_EVPN) | |
182 | key = jhash(&e->rd, | |
183 | offsetof(struct bmp_queue_entry, rd) | |
184 | - offsetof(struct bmp_queue_entry, refcount) | |
185 | + PSIZE(e->rd.prefixlen), | |
186 | key); | |
187 | ||
ed18356f DL |
188 | return key; |
189 | } | |
6c29258c | 190 | |
ed18356f DL |
191 | DECLARE_HASH(bmp_qhash, struct bmp_queue_entry, bhi, |
192 | bmp_qhash_cmp, bmp_qhash_hkey) | |
6c29258c | 193 | |
ed18356f DL |
194 | static int bmp_active_cmp(const struct bmp_active *a, |
195 | const struct bmp_active *b) | |
196 | { | |
197 | int c; | |
198 | ||
199 | c = strcmp(a->hostname, b->hostname); | |
200 | if (c) | |
201 | return c; | |
202 | if (a->port < b->port) | |
203 | return -1; | |
204 | if (a->port > b->port) | |
205 | return 1; | |
6c29258c YO |
206 | return 0; |
207 | } | |
208 | ||
ed18356f DL |
209 | DECLARE_SORTLIST_UNIQ(bmp_actives, struct bmp_active, bai, bmp_active_cmp) |
210 | ||
211 | static struct bmp *bmp_new(struct bmp_targets *bt, int bmp_sock) | |
6c29258c | 212 | { |
ed18356f DL |
213 | struct bmp *new = XCALLOC(MTYPE_BMP_CONN, sizeof(struct bmp)); |
214 | afi_t afi; | |
215 | safi_t safi; | |
216 | ||
217 | monotime(&new->t_up); | |
218 | new->targets = bt; | |
219 | new->socket = bmp_sock; | |
220 | new->syncafi = AFI_MAX; | |
221 | ||
222 | FOREACH_AFI_SAFI (afi, safi) { | |
223 | new->afistate[afi][safi] = bt->afimon[afi][safi] | |
224 | ? BMP_AFI_NEEDSYNC : BMP_AFI_INACTIVE; | |
225 | } | |
226 | ||
227 | bmp_session_add_tail(&bt->sessions, new); | |
228 | return new; | |
6c29258c | 229 | } |
6c29258c | 230 | |
ed18356f | 231 | static void bmp_free(struct bmp *bmp) |
6c29258c | 232 | { |
ed18356f DL |
233 | bmp_session_del(&bmp->targets->sessions, bmp); |
234 | XFREE(MTYPE_BMP_CONN, bmp); | |
6c29258c YO |
235 | } |
236 | ||
237 | static void bmp_common_hdr(struct stream *s, uint8_t ver, uint8_t type) | |
238 | { | |
239 | stream_putc(s, ver); | |
240 | stream_putl(s, 0); //dummy message length. will be set later. | |
241 | stream_putc(s, type); | |
242 | } | |
243 | ||
ed18356f DL |
244 | static void bmp_per_peer_hdr(struct stream *s, struct peer *peer, |
245 | uint8_t flags, const struct timeval *tv) | |
6c29258c | 246 | { |
6c29258c YO |
247 | char peer_distinguisher[8]; |
248 | ||
249 | #define BMP_PEER_TYPE_GLOBAL_INSTANCE 0 | |
250 | #define BMP_PEER_TYPE_RD_INSTANCE 1 | |
251 | #define BMP_PEER_TYPE_LOCAL_INSTANCE 2 | |
252 | ||
253 | #define BMP_PEER_FLAG_V (1 << 7) | |
254 | #define BMP_PEER_FLAG_L (1 << 6) | |
255 | #define BMP_PEER_FLAG_A (1 << 5) | |
256 | ||
257 | /* Peer Type */ | |
258 | stream_putc(s, BMP_PEER_TYPE_GLOBAL_INSTANCE); | |
259 | ||
260 | /* Peer Flags */ | |
ed18356f DL |
261 | if (peer->su.sa.sa_family == AF_INET6) |
262 | SET_FLAG(flags, BMP_PEER_FLAG_V); | |
263 | else | |
264 | UNSET_FLAG(flags, BMP_PEER_FLAG_V); | |
265 | stream_putc(s, flags); | |
6c29258c YO |
266 | |
267 | /* Peer Distinguisher */ | |
268 | memset (&peer_distinguisher[0], 0, 8); | |
269 | stream_put(s, &peer_distinguisher[0], 8); | |
270 | ||
271 | /* Peer Address */ | |
ed18356f DL |
272 | if (peer->su.sa.sa_family == AF_INET6) |
273 | stream_put(s, &peer->su.sin6.sin6_addr, 16); | |
274 | else if (peer->su.sa.sa_family == AF_INET) { | |
275 | stream_putl(s, 0); | |
276 | stream_putl(s, 0); | |
277 | stream_putl(s, 0); | |
278 | stream_put_in_addr(s, &peer->su.sin.sin_addr); | |
279 | } else { | |
280 | stream_putl(s, 0); | |
6c29258c YO |
281 | stream_putl(s, 0); |
282 | stream_putl(s, 0); | |
283 | stream_putl(s, 0); | |
6c29258c YO |
284 | } |
285 | ||
286 | /* Peer AS */ | |
287 | stream_putl(s, peer->as); | |
288 | ||
289 | /* Peer BGP ID */ | |
290 | stream_put_in_addr(s, &peer->remote_id); | |
291 | ||
292 | /* Timestamp */ | |
ed18356f DL |
293 | if (tv) { |
294 | stream_putl(s, tv->tv_sec); | |
295 | stream_putl(s, tv->tv_usec); | |
296 | } else { | |
297 | stream_putl(s, 0); | |
298 | stream_putl(s, 0); | |
299 | } | |
6c29258c YO |
300 | } |
301 | ||
ed18356f DL |
302 | static void bmp_put_info_tlv(struct stream *s, uint16_t type, |
303 | const char *string) | |
6c29258c YO |
304 | { |
305 | int len = strlen (string); | |
306 | stream_putw(s, type); | |
307 | stream_putw(s, len); | |
308 | stream_put(s, string, len); | |
309 | } | |
310 | ||
311 | static int bmp_send_initiation(struct bmp *bmp) | |
312 | { | |
313 | int len; | |
314 | struct stream *s; | |
315 | s = stream_new(BGP_MAX_PACKET_SIZE); | |
316 | bmp_common_hdr(s, BMP_VERSION_3, BMP_TYPE_INITIATION); | |
317 | ||
318 | #define BMP_INFO_TYPE_SYSDESCR 1 | |
319 | #define BMP_INFO_TYPE_SYSNAME 2 | |
ed18356f DL |
320 | bmp_put_info_tlv(s, BMP_INFO_TYPE_SYSDESCR, |
321 | FRR_FULL_NAME " " FRR_VER_SHORT); | |
322 | bmp_put_info_tlv(s, BMP_INFO_TYPE_SYSNAME, cmd_hostname_get()); | |
6c29258c YO |
323 | |
324 | len = stream_get_endp(s); | |
325 | stream_putl_at(s, BMP_LENGTH_POS, len); //message length is set. | |
326 | ||
ed18356f DL |
327 | pullwr_write_stream(bmp->pullwr, s); |
328 | stream_free(s); | |
6c29258c YO |
329 | return 0; |
330 | } | |
331 | ||
ed18356f DL |
332 | static void bmp_notify_put(struct stream *s, struct bgp_notify *nfy) |
333 | { | |
334 | size_t len_pos; | |
335 | uint8_t marker[16] = { | |
336 | 0xff, 0xff, 0xff, 0xff, | |
337 | 0xff, 0xff, 0xff, 0xff, | |
338 | 0xff, 0xff, 0xff, 0xff, | |
339 | 0xff, 0xff, 0xff, 0xff, | |
340 | }; | |
341 | ||
342 | stream_put(s, marker, sizeof(marker)); | |
343 | len_pos = stream_get_endp(s); | |
344 | stream_putw(s, 0); | |
345 | stream_putc(s, BGP_MSG_NOTIFY); | |
346 | stream_putc(s, nfy->code); | |
347 | stream_putc(s, nfy->subcode); | |
348 | stream_put(s, nfy->data, nfy->length); | |
349 | ||
350 | stream_putw_at(s, len_pos, stream_get_endp(s) - len_pos | |
351 | + sizeof(marker)); | |
352 | } | |
353 | ||
354 | static struct stream *bmp_peerstate(struct peer *peer, bool down) | |
6c29258c | 355 | { |
6c29258c | 356 | struct stream *s; |
ed18356f DL |
357 | size_t len; |
358 | struct timeval uptime, uptime_real; | |
6c29258c | 359 | |
ed18356f DL |
360 | uptime.tv_sec = peer->uptime; |
361 | uptime.tv_usec = 0; | |
362 | monotime_to_realtime(&uptime, &uptime_real); | |
6c29258c | 363 | |
ed18356f | 364 | #define BGP_BMP_MAX_PACKET_SIZE 1024 |
6c29258c | 365 | s = stream_new(BGP_MAX_PACKET_SIZE); |
6c29258c | 366 | |
ed18356f DL |
367 | if (peer->status == Established && !down) { |
368 | struct bmp_bgp_peer *bbpeer; | |
6c29258c | 369 | |
ed18356f DL |
370 | bmp_common_hdr(s, BMP_VERSION_3, |
371 | BMP_TYPE_PEER_UP_NOTIFICATION); | |
372 | bmp_per_peer_hdr(s, peer, 0, &uptime_real); | |
6c29258c YO |
373 | |
374 | /* Local Address (16 bytes) */ | |
375 | if (peer->su_local->sa.sa_family == AF_INET6) | |
376 | stream_put(s, &peer->su_local->sin6.sin6_addr, 16); | |
377 | else if (peer->su_local->sa.sa_family == AF_INET) { | |
378 | stream_putl(s, 0); | |
379 | stream_putl(s, 0); | |
380 | stream_putl(s, 0); | |
381 | stream_put_in_addr(s, &peer->su_local->sin.sin_addr); | |
382 | } | |
383 | ||
384 | /* Local Port, Remote Port */ | |
385 | if (peer->su_local->sa.sa_family == AF_INET6) | |
386 | stream_putw(s, peer->su_local->sin6.sin6_port); | |
387 | else if (peer->su_local->sa.sa_family == AF_INET) | |
388 | stream_putw(s, peer->su_local->sin.sin_port); | |
389 | if (peer->su_remote->sa.sa_family == AF_INET6) | |
390 | stream_putw(s, peer->su_remote->sin6.sin6_port); | |
391 | else if (peer->su_remote->sa.sa_family == AF_INET) | |
392 | stream_putw(s, peer->su_remote->sin.sin_port); | |
393 | ||
ed18356f DL |
394 | static const uint8_t dummy_open[] = { |
395 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
396 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
397 | 0x00, 0x13, 0x01, | |
398 | }; | |
6c29258c | 399 | |
ed18356f | 400 | bbpeer = bmp_bgp_peer_find(peer->qobj_node.nid); |
6c29258c | 401 | |
ed18356f DL |
402 | if (bbpeer && bbpeer->open_tx) |
403 | stream_put(s, bbpeer->open_tx, bbpeer->open_tx_len); | |
404 | else { | |
405 | stream_put(s, dummy_open, sizeof(dummy_open)); | |
63efca0e DL |
406 | zlog_warn("bmp: missing TX OPEN message for peer %s", |
407 | peer->host); | |
ed18356f DL |
408 | } |
409 | if (bbpeer && bbpeer->open_rx) | |
410 | stream_put(s, bbpeer->open_rx, bbpeer->open_rx_len); | |
411 | else { | |
412 | stream_put(s, dummy_open, sizeof(dummy_open)); | |
63efca0e DL |
413 | zlog_warn("bmp: missing RX OPEN message for peer %s", |
414 | peer->host); | |
ed18356f | 415 | } |
6c29258c | 416 | |
ed18356f DL |
417 | if (peer->desc) |
418 | bmp_put_info_tlv(s, 0, peer->desc); | |
419 | } else { | |
420 | uint8_t type; | |
421 | size_t type_pos; | |
422 | ||
423 | bmp_common_hdr(s, BMP_VERSION_3, | |
424 | BMP_TYPE_PEER_DOWN_NOTIFICATION); | |
425 | bmp_per_peer_hdr(s, peer, 0, &uptime_real); | |
426 | ||
427 | type_pos = stream_get_endp(s); | |
428 | stream_putc(s, 0); /* placeholder for down reason */ | |
429 | ||
430 | switch (peer->last_reset) { | |
431 | case PEER_DOWN_NOTIFY_RECEIVED: | |
432 | type = BMP_PEERDOWN_REMOTE_NOTIFY; | |
433 | bmp_notify_put(s, &peer->notify); | |
434 | break; | |
435 | case PEER_DOWN_CLOSE_SESSION: | |
436 | type = BMP_PEERDOWN_REMOTE_CLOSE; | |
437 | break; | |
21e8caa2 QY |
438 | case PEER_DOWN_WAITING_NHT: |
439 | type = BMP_PEERDOWN_LOCAL_FSM; | |
440 | stream_putw(s, BGP_FSM_TcpConnectionFails); | |
441 | break; | |
442 | /* | |
443 | * TODO: Map remaining PEER_DOWN_* reasons to RFC event codes. | |
444 | * TODO: Implement BMP_PEERDOWN_LOCAL_NOTIFY. | |
445 | * | |
446 | * See RFC7854 ss. 4.9 | |
447 | */ | |
ed18356f | 448 | default: |
21e8caa2 QY |
449 | type = BMP_PEERDOWN_LOCAL_FSM; |
450 | stream_putw(s, BMP_PEER_DOWN_NO_RELEVANT_EVENT_CODE); | |
ed18356f | 451 | break; |
6c29258c | 452 | } |
ed18356f | 453 | stream_putc_at(s, type_pos, type); |
6c29258c YO |
454 | } |
455 | ||
ed18356f DL |
456 | len = stream_get_endp(s); |
457 | stream_putl_at(s, BMP_LENGTH_POS, len); //message length is set. | |
458 | return s; | |
459 | } | |
460 | ||
461 | ||
462 | static int bmp_send_peerup(struct bmp *bmp) | |
463 | { | |
464 | struct peer *peer; | |
465 | struct listnode *node; | |
466 | struct stream *s; | |
467 | ||
468 | /* Walk down all peers */ | |
469 | for (ALL_LIST_ELEMENTS_RO(bmp->targets->bgp->peer, node, peer)) { | |
470 | s = bmp_peerstate(peer, false); | |
471 | pullwr_write_stream(bmp->pullwr, s); | |
472 | stream_free(s); | |
473 | } | |
6c29258c YO |
474 | |
475 | return 0; | |
476 | } | |
477 | ||
ed18356f DL |
478 | /* XXX: kludge - filling the pullwr's buffer */ |
479 | static void bmp_send_all(struct bmp_bgp *bmpbgp, struct stream *s) | |
480 | { | |
481 | struct bmp_targets *bt; | |
482 | struct bmp *bmp; | |
483 | ||
484 | frr_each(bmp_targets, &bmpbgp->targets, bt) | |
485 | frr_each(bmp_session, &bt->sessions, bmp) | |
486 | pullwr_write_stream(bmp->pullwr, s); | |
487 | stream_free(s); | |
488 | } | |
489 | ||
490 | /* | |
491 | * Route Mirroring | |
492 | */ | |
493 | ||
494 | #define BMP_MIRROR_TLV_TYPE_BGP_MESSAGE 0 | |
495 | #define BMP_MIRROR_TLV_TYPE_INFO 1 | |
496 | ||
497 | #define BMP_MIRROR_INFO_CODE_ERRORPDU 0 | |
498 | #define BMP_MIRROR_INFO_CODE_LOSTMSGS 1 | |
499 | ||
500 | static struct bmp_mirrorq *bmp_pull_mirror(struct bmp *bmp) | |
501 | { | |
502 | struct bmp_mirrorq *bmq; | |
503 | ||
504 | bmq = bmp->mirrorpos; | |
505 | if (!bmq) | |
506 | return NULL; | |
507 | ||
508 | bmp->mirrorpos = bmp_mirrorq_next(&bmp->targets->bmpbgp->mirrorq, bmq); | |
509 | ||
510 | bmq->refcount--; | |
511 | if (!bmq->refcount) { | |
512 | bmp->targets->bmpbgp->mirror_qsize -= sizeof(*bmq) + bmq->len; | |
513 | bmp_mirrorq_del(&bmp->targets->bmpbgp->mirrorq, bmq); | |
514 | } | |
515 | return bmq; | |
516 | } | |
517 | ||
518 | static void bmp_mirror_cull(struct bmp_bgp *bmpbgp) | |
519 | { | |
520 | while (bmpbgp->mirror_qsize > bmpbgp->mirror_qsizelimit) { | |
521 | struct bmp_mirrorq *bmq, *inner; | |
522 | struct bmp_targets *bt; | |
523 | struct bmp *bmp; | |
524 | ||
525 | bmq = bmp_mirrorq_first(&bmpbgp->mirrorq); | |
526 | ||
527 | frr_each(bmp_targets, &bmpbgp->targets, bt) { | |
528 | if (!bt->mirror) | |
529 | continue; | |
530 | frr_each(bmp_session, &bt->sessions, bmp) { | |
531 | if (bmp->mirrorpos != bmq) | |
532 | continue; | |
533 | ||
534 | while ((inner = bmp_pull_mirror(bmp))) { | |
535 | if (!inner->refcount) | |
536 | XFREE(MTYPE_BMP_MIRRORQ, | |
537 | inner); | |
538 | } | |
539 | ||
540 | zlog_warn("bmp[%s] lost mirror messages due to buffer size limit", | |
541 | bmp->remote); | |
542 | bmp->mirror_lost = true; | |
543 | pullwr_bump(bmp->pullwr); | |
544 | } | |
545 | } | |
546 | } | |
547 | } | |
548 | ||
d35a6c28 DL |
549 | static int bmp_mirror_packet(struct peer *peer, uint8_t type, bgp_size_t size, |
550 | struct stream *packet) | |
6c29258c | 551 | { |
ed18356f DL |
552 | struct bmp_bgp *bmpbgp = bmp_bgp_find(peer->bgp); |
553 | struct timeval tv; | |
554 | struct bmp_mirrorq *qitem; | |
555 | struct bmp_targets *bt; | |
6c29258c | 556 | struct bmp *bmp; |
6c29258c | 557 | |
e0302d7e QY |
558 | frrtrace(3, frr_bgp, bmp_mirror_packet, peer, type, packet); |
559 | ||
ed18356f DL |
560 | gettimeofday(&tv, NULL); |
561 | ||
562 | if (type == BGP_MSG_OPEN) { | |
563 | struct bmp_bgp_peer *bbpeer = bmp_bgp_peer_get(peer); | |
564 | ||
565 | XFREE(MTYPE_BMP_OPEN, bbpeer->open_rx); | |
566 | ||
567 | bbpeer->open_rx_len = size; | |
568 | bbpeer->open_rx = XMALLOC(MTYPE_BMP_OPEN, size); | |
569 | memcpy(bbpeer->open_rx, packet->data, size); | |
570 | } | |
571 | ||
572 | if (!bmpbgp) | |
d35a6c28 | 573 | return 0; |
6c29258c | 574 | |
ed18356f DL |
575 | qitem = XCALLOC(MTYPE_BMP_MIRRORQ, sizeof(*qitem) + size); |
576 | qitem->peerid = peer->qobj_node.nid; | |
577 | qitem->tv = tv; | |
578 | qitem->len = size; | |
579 | memcpy(qitem->data, packet->data, size); | |
580 | ||
581 | frr_each(bmp_targets, &bmpbgp->targets, bt) { | |
582 | if (!bt->mirror) | |
583 | continue; | |
584 | frr_each(bmp_session, &bt->sessions, bmp) { | |
585 | qitem->refcount++; | |
586 | if (!bmp->mirrorpos) | |
587 | bmp->mirrorpos = qitem; | |
588 | pullwr_bump(bmp->pullwr); | |
589 | } | |
590 | } | |
591 | if (qitem->refcount == 0) | |
592 | XFREE(MTYPE_BMP_MIRRORQ, qitem); | |
593 | else { | |
594 | bmpbgp->mirror_qsize += sizeof(*qitem) + size; | |
595 | bmp_mirrorq_add_tail(&bmpbgp->mirrorq, qitem); | |
596 | ||
597 | bmp_mirror_cull(bmpbgp); | |
598 | ||
599 | bmpbgp->mirror_qsizemax = MAX(bmpbgp->mirror_qsizemax, | |
600 | bmpbgp->mirror_qsize); | |
601 | } | |
602 | return 0; | |
603 | } | |
604 | ||
605 | static void bmp_wrmirror_lost(struct bmp *bmp, struct pullwr *pullwr) | |
606 | { | |
607 | struct stream *s; | |
608 | struct timeval tv; | |
609 | ||
610 | gettimeofday(&tv, NULL); | |
611 | ||
612 | s = stream_new(BGP_MAX_PACKET_SIZE); | |
613 | ||
614 | bmp_common_hdr(s, BMP_VERSION_3, BMP_TYPE_ROUTE_MIRRORING); | |
615 | bmp_per_peer_hdr(s, bmp->targets->bgp->peer_self, 0, &tv); | |
616 | ||
617 | stream_putw(s, BMP_MIRROR_TLV_TYPE_INFO); | |
618 | stream_putw(s, 2); | |
619 | stream_putw(s, BMP_MIRROR_INFO_CODE_LOSTMSGS); | |
620 | stream_putl_at(s, BMP_LENGTH_POS, stream_get_endp(s)); | |
621 | ||
622 | bmp->cnt_mirror_overruns++; | |
623 | pullwr_write_stream(bmp->pullwr, s); | |
624 | stream_free(s); | |
625 | } | |
626 | ||
627 | static bool bmp_wrmirror(struct bmp *bmp, struct pullwr *pullwr) | |
628 | { | |
629 | struct bmp_mirrorq *bmq; | |
630 | struct peer *peer; | |
631 | bool written = false; | |
632 | ||
633 | if (bmp->mirror_lost) { | |
634 | bmp_wrmirror_lost(bmp, pullwr); | |
635 | bmp->mirror_lost = false; | |
636 | return true; | |
637 | } | |
638 | ||
639 | bmq = bmp_pull_mirror(bmp); | |
640 | if (!bmq) | |
641 | return false; | |
642 | ||
643 | peer = QOBJ_GET_TYPESAFE(bmq->peerid, peer); | |
644 | if (!peer) { | |
645 | zlog_info("bmp: skipping mirror message for deleted peer"); | |
646 | goto out; | |
647 | } | |
648 | ||
649 | struct stream *s; | |
6c29258c YO |
650 | s = stream_new(BGP_MAX_PACKET_SIZE); |
651 | ||
652 | bmp_common_hdr(s, BMP_VERSION_3, BMP_TYPE_ROUTE_MIRRORING); | |
ed18356f | 653 | bmp_per_peer_hdr(s, peer, 0, &bmq->tv); |
6c29258c YO |
654 | |
655 | /* BMP Mirror TLV. */ | |
6c29258c | 656 | stream_putw(s, BMP_MIRROR_TLV_TYPE_BGP_MESSAGE); |
ed18356f DL |
657 | stream_putw(s, bmq->len); |
658 | stream_putl_at(s, BMP_LENGTH_POS, stream_get_endp(s) + bmq->len); | |
6c29258c | 659 | |
ed18356f DL |
660 | bmp->cnt_mirror++; |
661 | pullwr_write_stream(bmp->pullwr, s); | |
662 | pullwr_write(bmp->pullwr, bmq->data, bmq->len); | |
6c29258c | 663 | |
ed18356f DL |
664 | stream_free(s); |
665 | written = true; | |
6c29258c | 666 | |
ed18356f DL |
667 | out: |
668 | if (!bmq->refcount) | |
669 | XFREE(MTYPE_BMP_MIRRORQ, bmq); | |
670 | return written; | |
6c29258c YO |
671 | } |
672 | ||
ed18356f DL |
673 | static int bmp_outgoing_packet(struct peer *peer, uint8_t type, bgp_size_t size, |
674 | struct stream *packet) | |
6c29258c | 675 | { |
ed18356f | 676 | if (type == BGP_MSG_OPEN) { |
e0302d7e QY |
677 | frrtrace(2, frr_bgp, bmp_update_saved_open, peer, packet); |
678 | ||
ed18356f | 679 | struct bmp_bgp_peer *bbpeer = bmp_bgp_peer_get(peer); |
6c29258c | 680 | |
ed18356f | 681 | XFREE(MTYPE_BMP_OPEN, bbpeer->open_tx); |
6c29258c | 682 | |
ed18356f DL |
683 | bbpeer->open_tx_len = size; |
684 | bbpeer->open_tx = XMALLOC(MTYPE_BMP_OPEN, size); | |
685 | memcpy(bbpeer->open_tx, packet->data, size); | |
686 | } | |
687 | return 0; | |
688 | } | |
6c29258c | 689 | |
ed18356f DL |
690 | static int bmp_peer_established(struct peer *peer) |
691 | { | |
692 | struct bmp_bgp *bmpbgp = bmp_bgp_find(peer->bgp); | |
6c29258c | 693 | |
e0302d7e QY |
694 | frrtrace(1, frr_bgp, bmp_peer_status_changed, peer); |
695 | ||
ed18356f DL |
696 | if (!bmpbgp) |
697 | return 0; | |
6c29258c | 698 | |
df9e8ae7 | 699 | /* Check if this peer just went to Established */ |
fd2e2db6 | 700 | if ((peer->ostatus != OpenConfirm) || !(peer_established(peer))) |
df9e8ae7 MS |
701 | return 0; |
702 | ||
ed18356f DL |
703 | if (peer->doppelganger && (peer->doppelganger->status != Deleted)) { |
704 | struct bmp_bgp_peer *bbpeer, *bbdopp; | |
6c29258c | 705 | |
ed18356f DL |
706 | bbpeer = bmp_bgp_peer_get(peer); |
707 | bbdopp = bmp_bgp_peer_find(peer->doppelganger->qobj_node.nid); | |
708 | if (bbdopp) { | |
709 | XFREE(MTYPE_BMP_OPEN, bbpeer->open_tx); | |
710 | XFREE(MTYPE_BMP_OPEN, bbpeer->open_rx); | |
6c29258c | 711 | |
ed18356f DL |
712 | bbpeer->open_tx = bbdopp->open_tx; |
713 | bbpeer->open_tx_len = bbdopp->open_tx_len; | |
714 | bbpeer->open_rx = bbdopp->open_rx; | |
715 | bbpeer->open_rx_len = bbdopp->open_rx_len; | |
6c29258c | 716 | |
ed18356f DL |
717 | bmp_peerh_del(&bmp_peerh, bbdopp); |
718 | XFREE(MTYPE_BMP_PEER, bbdopp); | |
719 | } | |
6c29258c | 720 | } |
ed18356f DL |
721 | |
722 | bmp_send_all(bmpbgp, bmp_peerstate(peer, false)); | |
6c29258c YO |
723 | return 0; |
724 | } | |
725 | ||
ed18356f | 726 | static int bmp_peer_backward(struct peer *peer) |
6c29258c | 727 | { |
ed18356f DL |
728 | struct bmp_bgp *bmpbgp = bmp_bgp_find(peer->bgp); |
729 | struct bmp_bgp_peer *bbpeer; | |
6c29258c | 730 | |
e0302d7e QY |
731 | frrtrace(1, frr_bgp, bmp_peer_backward_transition, peer); |
732 | ||
ed18356f DL |
733 | if (!bmpbgp) |
734 | return 0; | |
6c29258c | 735 | |
ed18356f DL |
736 | bbpeer = bmp_bgp_peer_find(peer->qobj_node.nid); |
737 | if (bbpeer) { | |
738 | XFREE(MTYPE_BMP_OPEN, bbpeer->open_tx); | |
739 | bbpeer->open_tx_len = 0; | |
740 | XFREE(MTYPE_BMP_OPEN, bbpeer->open_rx); | |
741 | bbpeer->open_rx_len = 0; | |
742 | } | |
6c29258c | 743 | |
ed18356f DL |
744 | bmp_send_all(bmpbgp, bmp_peerstate(peer, true)); |
745 | return 0; | |
746 | } | |
6c29258c | 747 | |
ed18356f DL |
748 | static void bmp_eor(struct bmp *bmp, afi_t afi, safi_t safi, uint8_t flags) |
749 | { | |
750 | struct peer *peer; | |
751 | struct listnode *node; | |
752 | struct stream *s, *s2; | |
753 | iana_afi_t pkt_afi; | |
754 | iana_safi_t pkt_safi; | |
6c29258c | 755 | |
e0302d7e QY |
756 | frrtrace(3, frr_bgp, bmp_eor, afi, safi, flags); |
757 | ||
ed18356f | 758 | s = stream_new(BGP_MAX_PACKET_SIZE); |
6c29258c | 759 | |
ed18356f DL |
760 | /* Make BGP update packet. */ |
761 | bgp_packet_set_marker(s, BGP_MSG_UPDATE); | |
6c29258c | 762 | |
ed18356f DL |
763 | /* Unfeasible Routes Length */ |
764 | stream_putw(s, 0); | |
6c29258c | 765 | |
ed18356f DL |
766 | if (afi == AFI_IP && safi == SAFI_UNICAST) { |
767 | /* Total Path Attribute Length */ | |
768 | stream_putw(s, 0); | |
769 | } else { | |
770 | /* Convert AFI, SAFI to values for packet. */ | |
771 | bgp_map_afi_safi_int2iana(afi, safi, &pkt_afi, &pkt_safi); | |
772 | ||
773 | /* Total Path Attribute Length */ | |
774 | stream_putw(s, 6); | |
775 | stream_putc(s, BGP_ATTR_FLAG_OPTIONAL); | |
776 | stream_putc(s, BGP_ATTR_MP_UNREACH_NLRI); | |
777 | stream_putc(s, 3); | |
778 | stream_putw(s, pkt_afi); | |
779 | stream_putc(s, pkt_safi); | |
6c29258c YO |
780 | } |
781 | ||
ed18356f | 782 | bgp_packet_set_size(s); |
6c29258c | 783 | |
ed18356f DL |
784 | for (ALL_LIST_ELEMENTS_RO(bmp->targets->bgp->peer, node, peer)) { |
785 | if (!peer->afc_nego[afi][safi]) | |
786 | continue; | |
6c29258c | 787 | |
ed18356f | 788 | s2 = stream_new(BGP_MAX_PACKET_SIZE); |
6c29258c | 789 | |
ed18356f DL |
790 | bmp_common_hdr(s2, BMP_VERSION_3, |
791 | BMP_TYPE_ROUTE_MONITORING); | |
792 | bmp_per_peer_hdr(s2, peer, flags, NULL); | |
6c29258c | 793 | |
ed18356f DL |
794 | stream_putl_at(s2, BMP_LENGTH_POS, |
795 | stream_get_endp(s) + stream_get_endp(s2)); | |
6c29258c | 796 | |
ed18356f DL |
797 | bmp->cnt_update++; |
798 | pullwr_write_stream(bmp->pullwr, s2); | |
799 | pullwr_write_stream(bmp->pullwr, s); | |
800 | stream_free(s2); | |
801 | } | |
802 | stream_free(s); | |
6c29258c YO |
803 | } |
804 | ||
87102aa0 | 805 | static struct stream *bmp_update(const struct prefix *p, struct prefix_rd *prd, |
806 | struct peer *peer, struct attr *attr, | |
807 | afi_t afi, safi_t safi) | |
6c29258c | 808 | { |
ed18356f DL |
809 | struct bpacket_attr_vec_arr vecarr; |
810 | struct stream *s; | |
811 | size_t attrlen_pos = 0, mpattrlen_pos = 0; | |
812 | bgp_size_t total_attr_len = 0; | |
813 | ||
814 | bpacket_attr_vec_arr_reset(&vecarr); | |
815 | ||
816 | s = stream_new(BGP_MAX_PACKET_SIZE); | |
817 | bgp_packet_set_marker(s, BGP_MSG_UPDATE); | |
818 | ||
819 | /* 2: withdrawn routes length */ | |
820 | stream_putw(s, 0); | |
821 | ||
822 | /* 3: total attributes length - attrlen_pos stores the position */ | |
823 | attrlen_pos = stream_get_endp(s); | |
824 | stream_putw(s, 0); | |
825 | ||
826 | /* 5: Encode all the attributes, except MP_REACH_NLRI attr. */ | |
827 | total_attr_len = bgp_packet_attribute(NULL, peer, s, attr, | |
828 | &vecarr, NULL, afi, safi, peer, NULL, NULL, 0, 0, 0); | |
6c29258c | 829 | |
ed18356f | 830 | /* space check? */ |
6c29258c | 831 | |
ed18356f DL |
832 | /* peer_cap_enhe & add-path removed */ |
833 | if (afi == AFI_IP && safi == SAFI_UNICAST) | |
834 | stream_put_prefix(s, p); | |
835 | else { | |
836 | size_t p1 = stream_get_endp(s); | |
6c29258c | 837 | |
ed18356f | 838 | /* MPLS removed for now */ |
6c29258c | 839 | |
ed18356f DL |
840 | mpattrlen_pos = bgp_packet_mpattr_start(s, peer, afi, safi, |
841 | &vecarr, attr); | |
87102aa0 | 842 | bgp_packet_mpattr_prefix(s, afi, safi, p, prd, NULL, 0, 0, 0, |
843 | attr); | |
ed18356f DL |
844 | bgp_packet_mpattr_end(s, mpattrlen_pos); |
845 | total_attr_len += stream_get_endp(s) - p1; | |
6c29258c YO |
846 | } |
847 | ||
ed18356f DL |
848 | /* set the total attribute length correctly */ |
849 | stream_putw_at(s, attrlen_pos, total_attr_len); | |
850 | bgp_packet_set_size(s); | |
851 | return s; | |
852 | } | |
6c29258c | 853 | |
87102aa0 | 854 | static struct stream *bmp_withdraw(const struct prefix *p, |
855 | struct prefix_rd *prd, afi_t afi, | |
5f040085 | 856 | safi_t safi) |
ed18356f DL |
857 | { |
858 | struct stream *s; | |
859 | size_t attrlen_pos = 0, mp_start, mplen_pos; | |
860 | bgp_size_t total_attr_len = 0; | |
861 | bgp_size_t unfeasible_len; | |
6c29258c | 862 | |
ed18356f | 863 | s = stream_new(BGP_MAX_PACKET_SIZE); |
6c29258c | 864 | |
ed18356f DL |
865 | bgp_packet_set_marker(s, BGP_MSG_UPDATE); |
866 | stream_putw(s, 0); | |
6c29258c | 867 | |
ed18356f DL |
868 | if (afi == AFI_IP && safi == SAFI_UNICAST) { |
869 | stream_put_prefix(s, p); | |
870 | unfeasible_len = stream_get_endp(s) - BGP_HEADER_SIZE | |
871 | - BGP_UNFEASIBLE_LEN; | |
872 | stream_putw_at(s, BGP_HEADER_SIZE, unfeasible_len); | |
873 | stream_putw(s, 0); | |
874 | } else { | |
875 | attrlen_pos = stream_get_endp(s); | |
876 | /* total attr length = 0 for now. reevaluate later */ | |
877 | stream_putw(s, 0); | |
878 | mp_start = stream_get_endp(s); | |
879 | mplen_pos = bgp_packet_mpunreach_start(s, afi, safi); | |
880 | ||
87102aa0 | 881 | bgp_packet_mpunreach_prefix(s, p, afi, safi, prd, NULL, 0, 0, 0, |
882 | NULL); | |
ed18356f DL |
883 | /* Set the mp_unreach attr's length */ |
884 | bgp_packet_mpunreach_end(s, mplen_pos); | |
885 | ||
886 | /* Set total path attribute length. */ | |
887 | total_attr_len = stream_get_endp(s) - mp_start; | |
888 | stream_putw_at(s, attrlen_pos, total_attr_len); | |
889 | } | |
890 | ||
891 | bgp_packet_set_size(s); | |
892 | return s; | |
893 | } | |
894 | ||
895 | static void bmp_monitor(struct bmp *bmp, struct peer *peer, uint8_t flags, | |
87102aa0 | 896 | const struct prefix *p, struct prefix_rd *prd, |
897 | struct attr *attr, afi_t afi, safi_t safi, | |
898 | time_t uptime) | |
ed18356f DL |
899 | { |
900 | struct stream *hdr, *msg; | |
901 | struct timeval tv = { .tv_sec = uptime, .tv_usec = 0 }; | |
02cee158 | 902 | struct timeval uptime_real; |
ed18356f | 903 | |
02cee158 | 904 | monotime_to_realtime(&tv, &uptime_real); |
ed18356f | 905 | if (attr) |
87102aa0 | 906 | msg = bmp_update(p, prd, peer, attr, afi, safi); |
ed18356f | 907 | else |
87102aa0 | 908 | msg = bmp_withdraw(p, prd, afi, safi); |
ed18356f DL |
909 | |
910 | hdr = stream_new(BGP_MAX_PACKET_SIZE); | |
911 | bmp_common_hdr(hdr, BMP_VERSION_3, BMP_TYPE_ROUTE_MONITORING); | |
02cee158 | 912 | bmp_per_peer_hdr(hdr, peer, flags, &uptime_real); |
ed18356f DL |
913 | |
914 | stream_putl_at(hdr, BMP_LENGTH_POS, | |
915 | stream_get_endp(hdr) + stream_get_endp(msg)); | |
916 | ||
917 | bmp->cnt_update++; | |
918 | pullwr_write_stream(bmp->pullwr, hdr); | |
919 | pullwr_write_stream(bmp->pullwr, msg); | |
920 | stream_free(hdr); | |
921 | stream_free(msg); | |
922 | } | |
923 | ||
924 | static bool bmp_wrsync(struct bmp *bmp, struct pullwr *pullwr) | |
925 | { | |
926 | afi_t afi; | |
927 | safi_t safi; | |
928 | ||
929 | if (bmp->syncafi == AFI_MAX) { | |
930 | FOREACH_AFI_SAFI (afi, safi) { | |
931 | if (bmp->afistate[afi][safi] != BMP_AFI_NEEDSYNC) | |
932 | continue; | |
933 | ||
934 | bmp->afistate[afi][safi] = BMP_AFI_SYNC; | |
935 | ||
936 | bmp->syncafi = afi; | |
937 | bmp->syncsafi = safi; | |
938 | bmp->syncpeerid = 0; | |
939 | memset(&bmp->syncpos, 0, sizeof(bmp->syncpos)); | |
940 | bmp->syncpos.family = afi2family(afi); | |
87102aa0 | 941 | bmp->syncrdpos = NULL; |
ed18356f DL |
942 | zlog_info("bmp[%s] %s %s sending table", |
943 | bmp->remote, | |
944 | afi2str(bmp->syncafi), | |
945 | safi2str(bmp->syncsafi)); | |
946 | /* break does not work here, 2 loops... */ | |
947 | goto afibreak; | |
6c29258c | 948 | } |
ed18356f DL |
949 | if (bmp->syncafi == AFI_MAX) |
950 | return false; | |
951 | } | |
6c29258c | 952 | |
ed18356f DL |
953 | afibreak: |
954 | afi = bmp->syncafi; | |
955 | safi = bmp->syncsafi; | |
956 | ||
957 | if (!bmp->targets->afimon[afi][safi]) { | |
958 | /* shouldn't happen */ | |
959 | bmp->afistate[afi][safi] = BMP_AFI_INACTIVE; | |
960 | bmp->syncafi = AFI_MAX; | |
961 | bmp->syncsafi = SAFI_MAX; | |
962 | return true; | |
963 | } | |
964 | ||
965 | struct bgp_table *table = bmp->targets->bgp->rib[afi][safi]; | |
9bcb3eef | 966 | struct bgp_dest *bn; |
ed18356f DL |
967 | struct bgp_path_info *bpi = NULL, *bpiter; |
968 | struct bgp_adj_in *adjin = NULL, *adjiter; | |
969 | ||
87102aa0 | 970 | if (afi == AFI_L2VPN && safi == SAFI_EVPN) { |
971 | /* initialize syncrdpos to the first | |
972 | * mid-layer table entry | |
973 | */ | |
7b3a3805 | 974 | if (!bmp->syncrdpos) { |
87102aa0 | 975 | bmp->syncrdpos = bgp_table_top(table); |
7b3a3805 DS |
976 | if (!bmp->syncrdpos) |
977 | goto eor; | |
978 | } | |
87102aa0 | 979 | |
980 | /* look for a valid mid-layer table */ | |
981 | do { | |
982 | table = bgp_dest_get_bgp_table_info(bmp->syncrdpos); | |
983 | if (table) { | |
984 | break; | |
985 | } | |
986 | bmp->syncrdpos = bgp_route_next(bmp->syncrdpos); | |
987 | } while (bmp->syncrdpos); | |
988 | ||
989 | /* mid-layer table completed */ | |
990 | if (!bmp->syncrdpos) | |
991 | goto eor; | |
992 | } | |
993 | ||
ed18356f DL |
994 | bn = bgp_node_lookup(table, &bmp->syncpos); |
995 | do { | |
996 | if (!bn) { | |
997 | bn = bgp_table_get_next(table, &bmp->syncpos); | |
998 | if (!bn) { | |
87102aa0 | 999 | if (afi == AFI_L2VPN && safi == SAFI_EVPN) { |
1000 | /* reset bottom-layer pointer */ | |
1001 | memset(&bmp->syncpos, 0, | |
1002 | sizeof(bmp->syncpos)); | |
1003 | bmp->syncpos.family = afi2family(afi); | |
1004 | /* check whethere there is a valid | |
1005 | * next mid-layer table, otherwise | |
1006 | * declare table completed (eor) | |
1007 | */ | |
1008 | for (bmp->syncrdpos = bgp_route_next( | |
1009 | bmp->syncrdpos); | |
1010 | bmp->syncrdpos; | |
1011 | bmp->syncrdpos = bgp_route_next( | |
1012 | bmp->syncrdpos)) | |
1013 | if (bgp_dest_get_bgp_table_info( | |
1014 | bmp->syncrdpos)) | |
1015 | return true; | |
1016 | } | |
1017 | eor: | |
ed18356f DL |
1018 | zlog_info("bmp[%s] %s %s table completed (EoR)", |
1019 | bmp->remote, afi2str(afi), | |
1020 | safi2str(safi)); | |
1021 | bmp_eor(bmp, afi, safi, BMP_PEER_FLAG_L); | |
1022 | bmp_eor(bmp, afi, safi, 0); | |
1023 | ||
1024 | bmp->afistate[afi][safi] = BMP_AFI_LIVE; | |
1025 | bmp->syncafi = AFI_MAX; | |
1026 | bmp->syncsafi = SAFI_MAX; | |
1027 | return true; | |
1028 | } | |
1029 | bmp->syncpeerid = 0; | |
9bcb3eef | 1030 | prefix_copy(&bmp->syncpos, bgp_dest_get_prefix(bn)); |
6c29258c YO |
1031 | } |
1032 | ||
ed18356f | 1033 | if (bmp->targets->afimon[afi][safi] & BMP_MON_POSTPOLICY) { |
87102aa0 | 1034 | for (bpiter = bgp_dest_get_bgp_path_info(bn); bpiter; |
1035 | bpiter = bpiter->next) { | |
ed18356f DL |
1036 | if (!CHECK_FLAG(bpiter->flags, BGP_PATH_VALID)) |
1037 | continue; | |
1038 | if (bpiter->peer->qobj_node.nid | |
1039 | <= bmp->syncpeerid) | |
1040 | continue; | |
1041 | if (bpi && bpiter->peer->qobj_node.nid | |
1042 | > bpi->peer->qobj_node.nid) | |
1043 | continue; | |
1044 | bpi = bpiter; | |
1045 | } | |
1046 | } | |
1047 | if (bmp->targets->afimon[afi][safi] & BMP_MON_PREPOLICY) { | |
1048 | for (adjiter = bn->adj_in; adjiter; | |
1049 | adjiter = adjiter->next) { | |
1050 | if (adjiter->peer->qobj_node.nid | |
1051 | <= bmp->syncpeerid) | |
1052 | continue; | |
1053 | if (adjin && adjiter->peer->qobj_node.nid | |
1054 | > adjin->peer->qobj_node.nid) | |
1055 | continue; | |
1056 | adjin = adjiter; | |
1057 | } | |
1058 | } | |
1059 | if (bpi || adjin) | |
1060 | break; | |
1061 | ||
1062 | bn = NULL; | |
1063 | } while (1); | |
1064 | ||
1065 | if (adjin && bpi | |
1066 | && adjin->peer->qobj_node.nid < bpi->peer->qobj_node.nid) { | |
1067 | bpi = NULL; | |
1068 | bmp->syncpeerid = adjin->peer->qobj_node.nid; | |
1069 | } else if (adjin && bpi | |
1070 | && adjin->peer->qobj_node.nid > bpi->peer->qobj_node.nid) { | |
1071 | adjin = NULL; | |
1072 | bmp->syncpeerid = bpi->peer->qobj_node.nid; | |
1073 | } else if (bpi) { | |
1074 | bmp->syncpeerid = bpi->peer->qobj_node.nid; | |
1075 | } else if (adjin) { | |
1076 | bmp->syncpeerid = adjin->peer->qobj_node.nid; | |
1077 | } | |
6c29258c | 1078 | |
9bcb3eef | 1079 | const struct prefix *bn_p = bgp_dest_get_prefix(bn); |
87102aa0 | 1080 | struct prefix_rd *prd = NULL; |
1081 | if (afi == AFI_L2VPN && safi == SAFI_EVPN) | |
1082 | prd = (struct prefix_rd *)bgp_dest_get_prefix(bmp->syncrdpos); | |
b54892e0 | 1083 | |
ed18356f | 1084 | if (bpi) |
87102aa0 | 1085 | bmp_monitor(bmp, bpi->peer, BMP_PEER_FLAG_L, bn_p, prd, |
1086 | bpi->attr, afi, safi, bpi->uptime); | |
ed18356f | 1087 | if (adjin) |
87102aa0 | 1088 | bmp_monitor(bmp, adjin->peer, 0, bn_p, prd, adjin->attr, afi, |
1089 | safi, adjin->uptime); | |
6c29258c | 1090 | |
ed18356f | 1091 | return true; |
6c29258c YO |
1092 | } |
1093 | ||
ed18356f | 1094 | static struct bmp_queue_entry *bmp_pull(struct bmp *bmp) |
6c29258c | 1095 | { |
ed18356f DL |
1096 | struct bmp_queue_entry *bqe; |
1097 | ||
1098 | bqe = bmp->queuepos; | |
1099 | if (!bqe) | |
1100 | return NULL; | |
1101 | ||
1102 | bmp->queuepos = bmp_qlist_next(&bmp->targets->updlist, bqe); | |
1103 | ||
1104 | bqe->refcount--; | |
1105 | if (!bqe->refcount) { | |
1106 | bmp_qhash_del(&bmp->targets->updhash, bqe); | |
1107 | bmp_qlist_del(&bmp->targets->updlist, bqe); | |
1108 | } | |
1109 | return bqe; | |
1110 | } | |
1111 | ||
1112 | static bool bmp_wrqueue(struct bmp *bmp, struct pullwr *pullwr) | |
1113 | { | |
1114 | struct bmp_queue_entry *bqe; | |
1115 | struct peer *peer; | |
9bcb3eef | 1116 | struct bgp_dest *bn; |
ed18356f DL |
1117 | bool written = false; |
1118 | ||
1119 | bqe = bmp_pull(bmp); | |
1120 | if (!bqe) | |
1121 | return false; | |
1122 | ||
1123 | afi_t afi = bqe->afi; | |
1124 | safi_t safi = bqe->safi; | |
1125 | ||
1126 | switch (bmp->afistate[afi][safi]) { | |
1127 | case BMP_AFI_INACTIVE: | |
1128 | case BMP_AFI_NEEDSYNC: | |
1129 | goto out; | |
1130 | case BMP_AFI_SYNC: | |
1131 | if (prefix_cmp(&bqe->p, &bmp->syncpos) <= 0) | |
1132 | /* currently syncing but have already passed this | |
1133 | * prefix => send it. */ | |
1134 | break; | |
1135 | ||
1136 | /* currently syncing & haven't reached this prefix yet | |
1137 | * => it'll be sent as part of the table sync, no need here */ | |
1138 | goto out; | |
1139 | case BMP_AFI_LIVE: | |
1140 | break; | |
1141 | } | |
1142 | ||
1143 | peer = QOBJ_GET_TYPESAFE(bqe->peerid, peer); | |
1144 | if (!peer) { | |
1145 | zlog_info("bmp: skipping queued item for deleted peer"); | |
1146 | goto out; | |
1147 | } | |
1148 | if (peer->status != Established) | |
1149 | goto out; | |
1150 | ||
1151 | bn = bgp_node_lookup(bmp->targets->bgp->rib[afi][safi], &bqe->p); | |
87102aa0 | 1152 | struct prefix_rd *prd = NULL; |
1153 | if (bqe->afi == AFI_L2VPN && bqe->safi == SAFI_EVPN) | |
1154 | prd = &bqe->rd; | |
ed18356f DL |
1155 | |
1156 | if (bmp->targets->afimon[afi][safi] & BMP_MON_POSTPOLICY) { | |
1157 | struct bgp_path_info *bpi; | |
1158 | ||
87102aa0 | 1159 | for (bpi = bn ? bgp_dest_get_bgp_path_info(bn) : NULL; bpi; |
1160 | bpi = bpi->next) { | |
ed18356f DL |
1161 | if (!CHECK_FLAG(bpi->flags, BGP_PATH_VALID)) |
1162 | continue; | |
1163 | if (bpi->peer == peer) | |
1164 | break; | |
1165 | } | |
1166 | ||
87102aa0 | 1167 | bmp_monitor(bmp, peer, BMP_PEER_FLAG_L, &bqe->p, prd, |
ed18356f DL |
1168 | bpi ? bpi->attr : NULL, afi, safi, |
1169 | bpi ? bpi->uptime : monotime(NULL)); | |
1170 | written = true; | |
1171 | } | |
1172 | ||
1173 | if (bmp->targets->afimon[afi][safi] & BMP_MON_PREPOLICY) { | |
1174 | struct bgp_adj_in *adjin; | |
1175 | ||
1176 | for (adjin = bn ? bn->adj_in : NULL; adjin; | |
1177 | adjin = adjin->next) { | |
1178 | if (adjin->peer == peer) | |
1179 | break; | |
1180 | } | |
87102aa0 | 1181 | bmp_monitor(bmp, peer, BMP_PEER_FLAG_L, &bqe->p, prd, |
ed18356f DL |
1182 | adjin ? adjin->attr : NULL, afi, safi, |
1183 | adjin ? adjin->uptime : monotime(NULL)); | |
1184 | written = true; | |
1185 | } | |
1186 | ||
1187 | out: | |
1188 | if (!bqe->refcount) | |
1189 | XFREE(MTYPE_BMP_QUEUE, bqe); | |
1190 | return written; | |
1191 | } | |
1192 | ||
1193 | static void bmp_wrfill(struct bmp *bmp, struct pullwr *pullwr) | |
1194 | { | |
1195 | switch(bmp->state) { | |
1196 | case BMP_PeerUp: | |
1197 | bmp_send_peerup(bmp); | |
1198 | bmp->state = BMP_Run; | |
1199 | break; | |
1200 | ||
1201 | case BMP_Run: | |
1202 | if (bmp_wrmirror(bmp, pullwr)) | |
1203 | break; | |
1204 | if (bmp_wrqueue(bmp, pullwr)) | |
1205 | break; | |
1206 | if (bmp_wrsync(bmp, pullwr)) | |
1207 | break; | |
1208 | break; | |
1209 | } | |
1210 | } | |
1211 | ||
1212 | static void bmp_wrerr(struct bmp *bmp, struct pullwr *pullwr, bool eof) | |
1213 | { | |
1214 | if (eof) | |
1215 | zlog_info("bmp[%s] disconnected", bmp->remote); | |
1216 | else | |
1217 | flog_warn(EC_LIB_SYSTEM_CALL, "bmp[%s] connection error: %s", | |
1218 | bmp->remote, strerror(errno)); | |
1219 | ||
1220 | bmp_close(bmp); | |
1221 | bmp_free(bmp); | |
1222 | } | |
1223 | ||
9bcb3eef DS |
1224 | static void bmp_process_one(struct bmp_targets *bt, struct bgp *bgp, afi_t afi, |
1225 | safi_t safi, struct bgp_dest *bn, struct peer *peer) | |
ed18356f DL |
1226 | { |
1227 | struct bmp *bmp; | |
1228 | struct bmp_queue_entry *bqe, bqeref; | |
1229 | size_t refcount; | |
ed18356f DL |
1230 | |
1231 | refcount = bmp_session_count(&bt->sessions); | |
1232 | if (refcount == 0) | |
1233 | return; | |
1234 | ||
1235 | memset(&bqeref, 0, sizeof(bqeref)); | |
9bcb3eef | 1236 | prefix_copy(&bqeref.p, bgp_dest_get_prefix(bn)); |
ed18356f DL |
1237 | bqeref.peerid = peer->qobj_node.nid; |
1238 | bqeref.afi = afi; | |
1239 | bqeref.safi = safi; | |
1240 | ||
87102aa0 | 1241 | if (afi == AFI_L2VPN && safi == SAFI_EVPN && bn->pdest) |
1242 | prefix_copy(&bqeref.rd, | |
1243 | (struct prefix_rd *)bgp_dest_get_prefix(bn->pdest)); | |
1244 | ||
ed18356f DL |
1245 | bqe = bmp_qhash_find(&bt->updhash, &bqeref); |
1246 | if (bqe) { | |
1247 | if (bqe->refcount >= refcount) | |
1248 | /* nothing to do here */ | |
1249 | return; | |
1250 | ||
1251 | bmp_qlist_del(&bt->updlist, bqe); | |
1252 | } else { | |
1253 | bqe = XMALLOC(MTYPE_BMP_QUEUE, sizeof(*bqe)); | |
1254 | memcpy(bqe, &bqeref, sizeof(*bqe)); | |
1255 | ||
1256 | bmp_qhash_add(&bt->updhash, bqe); | |
1257 | } | |
1258 | ||
1259 | bqe->refcount = refcount; | |
1260 | bmp_qlist_add_tail(&bt->updlist, bqe); | |
1261 | ||
1262 | frr_each (bmp_session, &bt->sessions, bmp) | |
1263 | if (!bmp->queuepos) | |
1264 | bmp->queuepos = bqe; | |
1265 | } | |
1266 | ||
1267 | static int bmp_process(struct bgp *bgp, afi_t afi, safi_t safi, | |
9bcb3eef | 1268 | struct bgp_dest *bn, struct peer *peer, bool withdraw) |
ed18356f DL |
1269 | { |
1270 | struct bmp_bgp *bmpbgp = bmp_bgp_find(peer->bgp); | |
1271 | struct bmp_targets *bt; | |
1272 | struct bmp *bmp; | |
1273 | ||
e0302d7e QY |
1274 | if (frrtrace_enabled(frr_bgp, bmp_process)) { |
1275 | char pfxprint[PREFIX2STR_BUFFER]; | |
1276 | ||
1277 | prefix2str(&bn->p, pfxprint, sizeof(pfxprint)); | |
1278 | frrtrace(5, frr_bgp, bmp_process, peer, pfxprint, afi, safi, | |
1279 | withdraw); | |
1280 | } | |
1281 | ||
ed18356f DL |
1282 | if (!bmpbgp) |
1283 | return 0; | |
1284 | ||
1285 | frr_each(bmp_targets, &bmpbgp->targets, bt) { | |
1286 | if (!bt->afimon[afi][safi]) | |
1287 | continue; | |
1288 | ||
1289 | bmp_process_one(bt, bgp, afi, safi, bn, peer); | |
1290 | ||
1291 | frr_each(bmp_session, &bt->sessions, bmp) { | |
1292 | pullwr_bump(bmp->pullwr); | |
1293 | } | |
1294 | } | |
1295 | return 0; | |
1296 | } | |
1297 | ||
1298 | static void bmp_stat_put_u32(struct stream *s, size_t *cnt, uint16_t type, | |
1299 | uint32_t value) | |
1300 | { | |
1301 | stream_putw(s, type); | |
1302 | stream_putw(s, 4); | |
1303 | stream_putl(s, value); | |
1304 | (*cnt)++; | |
1305 | } | |
1306 | ||
1307 | static int bmp_stats(struct thread *thread) | |
1308 | { | |
1309 | struct bmp_targets *bt = THREAD_ARG(thread); | |
1310 | struct stream *s; | |
1311 | struct peer *peer; | |
1312 | struct listnode *node; | |
1313 | struct timeval tv; | |
1314 | ||
1315 | if (bt->stat_msec) | |
1316 | thread_add_timer_msec(bm->master, bmp_stats, bt, bt->stat_msec, | |
1317 | &bt->t_stats); | |
1318 | ||
1319 | gettimeofday(&tv, NULL); | |
1320 | ||
1321 | /* Walk down all peers */ | |
1322 | for (ALL_LIST_ELEMENTS_RO(bt->bgp->peer, node, peer)) { | |
1323 | size_t count = 0, count_pos, len; | |
1324 | ||
1325 | if (peer->status != Established) | |
1326 | continue; | |
1327 | ||
1328 | s = stream_new(BGP_MAX_PACKET_SIZE); | |
1329 | bmp_common_hdr(s, BMP_VERSION_3, BMP_TYPE_STATISTICS_REPORT); | |
1330 | bmp_per_peer_hdr(s, peer, 0, &tv); | |
1331 | ||
1332 | count_pos = stream_get_endp(s); | |
1333 | stream_putl(s, 0); | |
1334 | ||
1335 | bmp_stat_put_u32(s, &count, BMP_STATS_PFX_REJECTED, | |
1336 | peer->stat_pfx_filter); | |
1337 | bmp_stat_put_u32(s, &count, BMP_STATS_UPD_LOOP_ASPATH, | |
1338 | peer->stat_pfx_aspath_loop); | |
1339 | bmp_stat_put_u32(s, &count, BMP_STATS_UPD_LOOP_ORIGINATOR, | |
1340 | peer->stat_pfx_originator_loop); | |
1341 | bmp_stat_put_u32(s, &count, BMP_STATS_UPD_LOOP_CLUSTER, | |
1342 | peer->stat_pfx_cluster_loop); | |
1343 | bmp_stat_put_u32(s, &count, BMP_STATS_PFX_DUP_WITHDRAW, | |
1344 | peer->stat_pfx_dup_withdraw); | |
1345 | bmp_stat_put_u32(s, &count, BMP_STATS_UPD_7606_WITHDRAW, | |
1346 | peer->stat_upd_7606); | |
1347 | bmp_stat_put_u32(s, &count, BMP_STATS_FRR_NH_INVALID, | |
1348 | peer->stat_pfx_nh_invalid); | |
1349 | ||
1350 | stream_putl_at(s, count_pos, count); | |
1351 | ||
1352 | len = stream_get_endp(s); | |
1353 | stream_putl_at(s, BMP_LENGTH_POS, len); | |
1354 | ||
1355 | bmp_send_all(bt->bmpbgp, s); | |
1356 | } | |
1357 | return 0; | |
1358 | } | |
1359 | ||
8252b477 AL |
1360 | /* read from the BMP socket to detect session termination */ |
1361 | static int bmp_read(struct thread *t) | |
1362 | { | |
1363 | struct bmp *bmp = THREAD_ARG(t); | |
1364 | char buf[1024]; | |
1365 | ssize_t n; | |
1366 | ||
1367 | bmp->t_read = NULL; | |
1368 | ||
1369 | n = read(bmp->socket, buf, sizeof(buf)); | |
1370 | if (n >= 1) { | |
1371 | zlog_info("bmp[%s]: unexpectedly received %zu bytes", bmp->remote, n); | |
1372 | } else if (n == 0) { | |
1373 | /* the TCP session was terminated by the far end */ | |
1374 | bmp_wrerr(bmp, NULL, true); | |
1375 | return 0; | |
1376 | } else if (!(errno == EAGAIN || errno == EWOULDBLOCK || errno == EINTR)) { | |
1377 | /* the TCP session experienced a fatal error, likely a timeout */ | |
1378 | bmp_wrerr(bmp, NULL, false); | |
1379 | return -1; | |
1380 | } | |
1381 | ||
1382 | thread_add_read(bm->master, bmp_read, bmp, bmp->socket, &bmp->t_read); | |
1383 | ||
1384 | return 0; | |
1385 | } | |
1386 | ||
ed18356f DL |
1387 | static struct bmp *bmp_open(struct bmp_targets *bt, int bmp_sock) |
1388 | { | |
1389 | union sockunion su, *sumem; | |
1390 | struct prefix p; | |
1391 | int on = 1; | |
1392 | struct access_list *acl = NULL; | |
1393 | enum filter_type ret; | |
1394 | char buf[SU_ADDRSTRLEN]; | |
1395 | struct bmp *bmp; | |
1396 | ||
1397 | sumem = sockunion_getpeername(bmp_sock); | |
1398 | if (!sumem) { | |
1399 | close(bmp_sock); | |
1400 | return NULL; | |
1401 | } | |
1402 | memcpy(&su, sumem, sizeof(su)); | |
1403 | sockunion_free(sumem); | |
1404 | ||
1405 | set_nonblocking(bmp_sock); | |
1406 | set_cloexec(bmp_sock); | |
ed18356f | 1407 | |
0154d8ce DS |
1408 | if (!sockunion2hostprefix(&su, &p)) { |
1409 | close(bmp_sock); | |
1410 | return NULL; | |
1411 | } | |
ed18356f DL |
1412 | |
1413 | acl = NULL; | |
1414 | switch (p.family) { | |
1415 | case AF_INET: | |
1416 | acl = access_list_lookup(AFI_IP, bt->acl_name); | |
1417 | break; | |
1418 | case AF_INET6: | |
1419 | acl = access_list_lookup(AFI_IP6, bt->acl6_name); | |
1420 | break; | |
1421 | default: | |
1422 | break; | |
1423 | } | |
1424 | ||
1425 | ret = FILTER_PERMIT; | |
1426 | if (acl) { | |
1427 | ret = access_list_apply(acl, &p); | |
1428 | } | |
1429 | ||
1430 | sockunion2str(&su, buf, SU_ADDRSTRLEN); | |
1431 | snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), ":%u", | |
1432 | su.sa.sa_family == AF_INET | |
1433 | ? ntohs(su.sin.sin_port) | |
1434 | : ntohs(su.sin6.sin6_port)); | |
1435 | ||
1436 | if (ret == FILTER_DENY) { | |
1437 | bt->cnt_aclrefused++; | |
1438 | zlog_info("bmp[%s] connection refused by access-list", buf); | |
1439 | close(bmp_sock); | |
1440 | return NULL; | |
1441 | } | |
1442 | bt->cnt_accept++; | |
1443 | ||
d38c6bb1 DS |
1444 | if (setsockopt(bmp_sock, SOL_SOCKET, SO_KEEPALIVE, &on, sizeof(on)) < 0) |
1445 | flog_err(EC_LIB_SOCKET, "bmp: %d can't setsockopt SO_KEEPALIVE: %s(%d)", | |
1446 | bmp_sock, safe_strerror(errno), errno); | |
1447 | if (setsockopt(bmp_sock, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on)) < 0) | |
1448 | flog_err(EC_LIB_SOCKET, "bmp: %d can't setsockopt TCP_NODELAY: %s(%d)", | |
1449 | bmp_sock, safe_strerror(errno), errno); | |
ed18356f DL |
1450 | |
1451 | zlog_info("bmp[%s] connection established", buf); | |
1452 | ||
1453 | /* Allocate new BMP structure and set up default values. */ | |
1454 | bmp = bmp_new(bt, bmp_sock); | |
1455 | strlcpy(bmp->remote, buf, sizeof(bmp->remote)); | |
1456 | ||
1457 | bmp->state = BMP_PeerUp; | |
1458 | bmp->pullwr = pullwr_new(bm->master, bmp_sock, bmp, bmp_wrfill, | |
1459 | bmp_wrerr); | |
8252b477 | 1460 | thread_add_read(bm->master, bmp_read, bmp, bmp_sock, &bmp->t_read); |
ed18356f DL |
1461 | bmp_send_initiation(bmp); |
1462 | ||
1463 | return bmp; | |
1464 | } | |
1465 | ||
1466 | /* Accept BMP connection. */ | |
1467 | static int bmp_accept(struct thread *thread) | |
1468 | { | |
1469 | union sockunion su; | |
1470 | struct bmp_listener *bl = THREAD_ARG(thread); | |
1471 | int bmp_sock; | |
1472 | ||
1473 | /* We continue hearing BMP socket. */ | |
1474 | thread_add_read(bm->master, bmp_accept, bl, bl->sock, &bl->t_accept); | |
1475 | ||
1476 | memset(&su, 0, sizeof(union sockunion)); | |
1477 | ||
1478 | /* We can handle IPv4 or IPv6 socket. */ | |
1479 | bmp_sock = sockunion_accept(bl->sock, &su); | |
1480 | if (bmp_sock < 0) { | |
63efca0e | 1481 | zlog_info("bmp: accept_sock failed: %s", safe_strerror(errno)); |
ed18356f DL |
1482 | return -1; |
1483 | } | |
1484 | bmp_open(bl->targets, bmp_sock); | |
1485 | return 0; | |
1486 | } | |
1487 | ||
1488 | static void bmp_close(struct bmp *bmp) | |
1489 | { | |
1490 | struct bmp_queue_entry *bqe; | |
1491 | struct bmp_mirrorq *bmq; | |
1492 | ||
8252b477 AL |
1493 | THREAD_OFF(bmp->t_read); |
1494 | ||
ed18356f DL |
1495 | if (bmp->active) |
1496 | bmp_active_disconnected(bmp->active); | |
1497 | ||
1498 | while ((bmq = bmp_pull_mirror(bmp))) | |
1499 | if (!bmq->refcount) | |
1500 | XFREE(MTYPE_BMP_MIRRORQ, bmq); | |
1501 | while ((bqe = bmp_pull(bmp))) | |
1502 | if (!bqe->refcount) | |
1503 | XFREE(MTYPE_BMP_QUEUE, bqe); | |
1504 | ||
1505 | THREAD_OFF(bmp->t_read); | |
1506 | pullwr_del(bmp->pullwr); | |
1507 | close(bmp->socket); | |
1508 | } | |
1509 | ||
1510 | static struct bmp_bgp *bmp_bgp_find(struct bgp *bgp) | |
1511 | { | |
1512 | struct bmp_bgp dummy = { .bgp = bgp }; | |
1513 | return bmp_bgph_find(&bmp_bgph, &dummy); | |
1514 | } | |
1515 | ||
1516 | static struct bmp_bgp *bmp_bgp_get(struct bgp *bgp) | |
1517 | { | |
1518 | struct bmp_bgp *bmpbgp; | |
1519 | ||
1520 | bmpbgp = bmp_bgp_find(bgp); | |
1521 | if (bmpbgp) | |
1522 | return bmpbgp; | |
1523 | ||
1524 | bmpbgp = XCALLOC(MTYPE_BMP, sizeof(*bmpbgp)); | |
1525 | bmpbgp->bgp = bgp; | |
1526 | bmpbgp->mirror_qsizelimit = ~0UL; | |
1527 | bmp_mirrorq_init(&bmpbgp->mirrorq); | |
1528 | bmp_bgph_add(&bmp_bgph, bmpbgp); | |
1529 | ||
1530 | return bmpbgp; | |
1531 | } | |
1532 | ||
1533 | static void bmp_bgp_put(struct bmp_bgp *bmpbgp) | |
1534 | { | |
1535 | struct bmp_targets *bt; | |
1536 | ||
1537 | bmp_bgph_del(&bmp_bgph, bmpbgp); | |
1538 | ||
1539 | frr_each_safe(bmp_targets, &bmpbgp->targets, bt) | |
1540 | bmp_targets_put(bt); | |
1541 | ||
1542 | bmp_mirrorq_fini(&bmpbgp->mirrorq); | |
1543 | XFREE(MTYPE_BMP, bmpbgp); | |
1544 | } | |
1545 | ||
1546 | static int bmp_bgp_del(struct bgp *bgp) | |
1547 | { | |
1548 | struct bmp_bgp *bmpbgp = bmp_bgp_find(bgp); | |
1549 | ||
1550 | if (bmpbgp) | |
1551 | bmp_bgp_put(bmpbgp); | |
1552 | return 0; | |
1553 | } | |
1554 | ||
1555 | static struct bmp_bgp_peer *bmp_bgp_peer_find(uint64_t peerid) | |
1556 | { | |
1557 | struct bmp_bgp_peer dummy = { .peerid = peerid }; | |
1558 | return bmp_peerh_find(&bmp_peerh, &dummy); | |
1559 | } | |
1560 | ||
1561 | static struct bmp_bgp_peer *bmp_bgp_peer_get(struct peer *peer) | |
1562 | { | |
1563 | struct bmp_bgp_peer *bbpeer; | |
1564 | ||
1565 | bbpeer = bmp_bgp_peer_find(peer->qobj_node.nid); | |
1566 | if (bbpeer) | |
1567 | return bbpeer; | |
1568 | ||
1569 | bbpeer = XCALLOC(MTYPE_BMP_PEER, sizeof(*bbpeer)); | |
1570 | bbpeer->peerid = peer->qobj_node.nid; | |
1571 | bmp_peerh_add(&bmp_peerh, bbpeer); | |
1572 | ||
1573 | return bbpeer; | |
1574 | } | |
1575 | ||
1576 | static struct bmp_targets *bmp_targets_find1(struct bgp *bgp, const char *name) | |
1577 | { | |
1578 | struct bmp_bgp *bmpbgp = bmp_bgp_find(bgp); | |
1579 | struct bmp_targets dummy; | |
1580 | ||
1581 | if (!bmpbgp) | |
1582 | return NULL; | |
1583 | dummy.name = (char *)name; | |
1584 | return bmp_targets_find(&bmpbgp->targets, &dummy); | |
1585 | } | |
1586 | ||
1587 | static struct bmp_targets *bmp_targets_get(struct bgp *bgp, const char *name) | |
1588 | { | |
1589 | struct bmp_targets *bt; | |
1590 | ||
1591 | bt = bmp_targets_find1(bgp, name); | |
1592 | if (bt) | |
1593 | return bt; | |
1594 | ||
1595 | bt = XCALLOC(MTYPE_BMP_TARGETS, sizeof(*bt)); | |
1596 | bt->name = XSTRDUP(MTYPE_BMP_TARGETSNAME, name); | |
1597 | bt->bgp = bgp; | |
1598 | bt->bmpbgp = bmp_bgp_get(bgp); | |
1599 | bmp_session_init(&bt->sessions); | |
1600 | bmp_qhash_init(&bt->updhash); | |
1601 | bmp_qlist_init(&bt->updlist); | |
1602 | bmp_actives_init(&bt->actives); | |
1603 | bmp_listeners_init(&bt->listeners); | |
1604 | ||
1605 | QOBJ_REG(bt, bmp_targets); | |
1606 | bmp_targets_add(&bt->bmpbgp->targets, bt); | |
1607 | return bt; | |
1608 | } | |
1609 | ||
1610 | static void bmp_targets_put(struct bmp_targets *bt) | |
1611 | { | |
1612 | struct bmp *bmp; | |
1613 | struct bmp_active *ba; | |
1614 | ||
1615 | frr_each_safe (bmp_actives, &bt->actives, ba) | |
1616 | bmp_active_put(ba); | |
1617 | ||
1618 | frr_each_safe(bmp_session, &bt->sessions, bmp) { | |
1619 | bmp_close(bmp); | |
1620 | bmp_free(bmp); | |
1621 | } | |
1622 | ||
1623 | bmp_targets_del(&bt->bmpbgp->targets, bt); | |
1624 | QOBJ_UNREG(bt); | |
1625 | ||
1626 | bmp_listeners_fini(&bt->listeners); | |
1627 | bmp_actives_fini(&bt->actives); | |
1628 | bmp_qhash_fini(&bt->updhash); | |
1629 | bmp_qlist_fini(&bt->updlist); | |
1630 | ||
1631 | XFREE(MTYPE_BMP_ACLNAME, bt->acl_name); | |
1632 | XFREE(MTYPE_BMP_ACLNAME, bt->acl6_name); | |
1633 | bmp_session_fini(&bt->sessions); | |
1634 | ||
1635 | XFREE(MTYPE_BMP_TARGETSNAME, bt->name); | |
1636 | XFREE(MTYPE_BMP_TARGETS, bt); | |
1637 | } | |
1638 | ||
1639 | static struct bmp_listener *bmp_listener_find(struct bmp_targets *bt, | |
1640 | const union sockunion *su, | |
1641 | int port) | |
1642 | { | |
1643 | struct bmp_listener dummy; | |
1644 | dummy.addr = *su; | |
1645 | dummy.port = port; | |
1646 | return bmp_listeners_find(&bt->listeners, &dummy); | |
1647 | } | |
1648 | ||
1649 | static struct bmp_listener *bmp_listener_get(struct bmp_targets *bt, | |
1650 | const union sockunion *su, | |
1651 | int port) | |
1652 | { | |
1653 | struct bmp_listener *bl = bmp_listener_find(bt, su, port); | |
1654 | ||
1655 | if (bl) | |
1656 | return bl; | |
1657 | ||
1658 | bl = XCALLOC(MTYPE_BMP_LISTENER, sizeof(*bl)); | |
1659 | bl->targets = bt; | |
1660 | bl->addr = *su; | |
1661 | bl->port = port; | |
1662 | bl->sock = -1; | |
1663 | ||
1664 | bmp_listeners_add(&bt->listeners, bl); | |
1665 | return bl; | |
1666 | } | |
1667 | ||
1668 | static void bmp_listener_put(struct bmp_listener *bl) | |
1669 | { | |
1670 | bmp_listeners_del(&bl->targets->listeners, bl); | |
1671 | XFREE(MTYPE_BMP_LISTENER, bl); | |
1672 | } | |
1673 | ||
1674 | static void bmp_listener_start(struct bmp_listener *bl) | |
1675 | { | |
1676 | int sock, ret; | |
1677 | ||
1678 | sock = socket(bl->addr.sa.sa_family, SOCK_STREAM, 0); | |
1679 | if (sock < 0) | |
1680 | return; | |
1681 | ||
1682 | sockopt_reuseaddr(sock); | |
1683 | sockopt_reuseport(sock); | |
1684 | sockopt_v6only(bl->addr.sa.sa_family, sock); | |
1685 | set_cloexec(sock); | |
1686 | ||
1687 | ret = sockunion_bind(sock, &bl->addr, bl->port, &bl->addr); | |
1688 | if (ret < 0) | |
1689 | goto out_sock; | |
1690 | ||
1691 | ret = listen(sock, 3); | |
1692 | if (ret < 0) | |
1693 | goto out_sock; | |
1694 | ||
1695 | bl->sock = sock; | |
1696 | thread_add_read(bm->master, bmp_accept, bl, sock, &bl->t_accept); | |
1697 | return; | |
1698 | out_sock: | |
1699 | close(sock); | |
1700 | } | |
1701 | ||
1702 | static void bmp_listener_stop(struct bmp_listener *bl) | |
1703 | { | |
1704 | THREAD_OFF(bl->t_accept); | |
1705 | ||
1706 | if (bl->sock != -1) | |
1707 | close(bl->sock); | |
1708 | bl->sock = -1; | |
1709 | } | |
1710 | ||
1711 | static struct bmp_active *bmp_active_find(struct bmp_targets *bt, | |
1712 | const char *hostname, int port) | |
1713 | { | |
1714 | struct bmp_active dummy; | |
1715 | dummy.hostname = (char *)hostname; | |
1716 | dummy.port = port; | |
1717 | return bmp_actives_find(&bt->actives, &dummy); | |
1718 | } | |
1719 | ||
1720 | static struct bmp_active *bmp_active_get(struct bmp_targets *bt, | |
1721 | const char *hostname, int port) | |
1722 | { | |
1723 | struct bmp_active *ba; | |
1724 | ||
1725 | ba = bmp_active_find(bt, hostname, port); | |
1726 | if (ba) | |
1727 | return ba; | |
1728 | ||
1729 | ba = XCALLOC(MTYPE_BMP_ACTIVE, sizeof(*ba)); | |
1730 | ba->targets = bt; | |
1731 | ba->hostname = XSTRDUP(MTYPE_TMP, hostname); | |
1732 | ba->port = port; | |
1733 | ba->minretry = BMP_DFLT_MINRETRY; | |
1734 | ba->maxretry = BMP_DFLT_MAXRETRY; | |
1735 | ba->socket = -1; | |
1736 | ||
1737 | bmp_actives_add(&bt->actives, ba); | |
1738 | return ba; | |
1739 | } | |
1740 | ||
1741 | static void bmp_active_put(struct bmp_active *ba) | |
1742 | { | |
1743 | THREAD_OFF(ba->t_timer); | |
1744 | THREAD_OFF(ba->t_read); | |
1745 | THREAD_OFF(ba->t_write); | |
1746 | ||
1747 | bmp_actives_del(&ba->targets->actives, ba); | |
1748 | ||
1749 | if (ba->bmp) { | |
1750 | ba->bmp->active = NULL; | |
1751 | bmp_close(ba->bmp); | |
1752 | bmp_free(ba->bmp); | |
1753 | } | |
1754 | if (ba->socket != -1) | |
1755 | close(ba->socket); | |
1756 | ||
1757 | XFREE(MTYPE_TMP, ba->hostname); | |
1758 | XFREE(MTYPE_BMP_ACTIVE, ba); | |
1759 | } | |
1760 | ||
1761 | static void bmp_active_setup(struct bmp_active *ba); | |
1762 | ||
1763 | static void bmp_active_connect(struct bmp_active *ba) | |
1764 | { | |
1765 | enum connect_result res; | |
1766 | char buf[SU_ADDRSTRLEN]; | |
1767 | ||
1768 | for (; ba->addrpos < ba->addrtotal; ba->addrpos++) { | |
1769 | ba->socket = sockunion_socket(&ba->addrs[ba->addrpos]); | |
1770 | if (ba->socket < 0) { | |
1771 | zlog_warn("bmp[%s]: failed to create socket", | |
1772 | ba->hostname); | |
1773 | continue; | |
1774 | } | |
c258527b | 1775 | |
ed18356f DL |
1776 | set_nonblocking(ba->socket); |
1777 | res = sockunion_connect(ba->socket, &ba->addrs[ba->addrpos], | |
1778 | htons(ba->port), 0); | |
1779 | switch (res) { | |
1780 | case connect_error: | |
1781 | sockunion2str(&ba->addrs[ba->addrpos], buf, | |
1782 | sizeof(buf)); | |
1783 | zlog_warn("bmp[%s]: failed to connect to %s:%d", | |
1784 | ba->hostname, buf, ba->port); | |
1785 | close(ba->socket); | |
1786 | ba->socket = -1; | |
1787 | continue; | |
1788 | case connect_success: | |
1789 | break; | |
1790 | case connect_in_progress: | |
1791 | bmp_active_setup(ba); | |
1792 | return; | |
1793 | } | |
1794 | } | |
1795 | ||
1796 | /* exhausted all addresses */ | |
1797 | ba->curretry += ba->curretry / 2; | |
1798 | bmp_active_setup(ba); | |
1799 | } | |
1800 | ||
3286ca07 DL |
1801 | static void bmp_active_resolved(struct resolver_query *resq, const char *errstr, |
1802 | int numaddrs, union sockunion *addr) | |
ed18356f DL |
1803 | { |
1804 | struct bmp_active *ba = container_of(resq, struct bmp_active, resq); | |
1805 | unsigned i; | |
1806 | ||
1807 | if (numaddrs <= 0) { | |
3286ca07 DL |
1808 | zlog_warn("bmp[%s]: hostname resolution failed: %s", |
1809 | ba->hostname, errstr); | |
1810 | ba->last_err = errstr; | |
125dc952 | 1811 | ba->curretry += ba->curretry / 2; |
a3d04c32 | 1812 | ba->addrpos = 0; |
125dc952 DL |
1813 | ba->addrtotal = 0; |
1814 | bmp_active_setup(ba); | |
1815 | return; | |
a3d04c32 | 1816 | } |
ed18356f | 1817 | |
125dc952 DL |
1818 | if (numaddrs > (int)array_size(ba->addrs)) |
1819 | numaddrs = array_size(ba->addrs); | |
1820 | ||
1821 | ba->addrpos = 0; | |
1822 | ba->addrtotal = numaddrs; | |
1823 | for (i = 0; i < ba->addrtotal; i++) | |
1824 | memcpy(&ba->addrs[i], &addr[i], sizeof(ba->addrs[0])); | |
1825 | ||
ed18356f DL |
1826 | bmp_active_connect(ba); |
1827 | } | |
1828 | ||
1829 | static int bmp_active_thread(struct thread *t) | |
1830 | { | |
1831 | struct bmp_active *ba = THREAD_ARG(t); | |
1832 | socklen_t slen; | |
1833 | int status, ret; | |
1834 | char buf[SU_ADDRSTRLEN]; | |
1835 | ||
1836 | /* all 3 end up here, though only timer or read+write are active | |
1837 | * at a time */ | |
1838 | THREAD_OFF(ba->t_timer); | |
1839 | THREAD_OFF(ba->t_read); | |
1840 | THREAD_OFF(ba->t_write); | |
1841 | ||
3286ca07 DL |
1842 | ba->last_err = NULL; |
1843 | ||
ed18356f DL |
1844 | if (ba->socket == -1) { |
1845 | resolver_resolve(&ba->resq, AF_UNSPEC, ba->hostname, | |
1846 | bmp_active_resolved); | |
1847 | return 0; | |
1848 | } | |
1849 | ||
1850 | slen = sizeof(status); | |
1851 | ret = getsockopt(ba->socket, SOL_SOCKET, SO_ERROR, (void *)&status, | |
1852 | &slen); | |
1853 | ||
1854 | sockunion2str(&ba->addrs[ba->addrpos], buf, sizeof(buf)); | |
1855 | if (ret < 0 || status != 0) { | |
3286ca07 DL |
1856 | ba->last_err = strerror(status); |
1857 | zlog_warn("bmp[%s]: failed to connect to %s:%d: %s", | |
1858 | ba->hostname, buf, ba->port, ba->last_err); | |
ed18356f DL |
1859 | goto out_next; |
1860 | } | |
1861 | ||
1862 | zlog_warn("bmp[%s]: outbound connection to %s:%d", | |
1863 | ba->hostname, buf, ba->port); | |
1864 | ||
1865 | ba->bmp = bmp_open(ba->targets, ba->socket); | |
1866 | if (!ba->bmp) | |
1867 | goto out_next; | |
1868 | ||
1869 | ba->bmp->active = ba; | |
1870 | ba->socket = -1; | |
1871 | ba->curretry = ba->minretry; | |
1872 | return 0; | |
1873 | ||
1874 | out_next: | |
1875 | close(ba->socket); | |
1876 | ba->socket = -1; | |
1877 | ba->addrpos++; | |
1878 | bmp_active_connect(ba); | |
1879 | return 0; | |
1880 | } | |
1881 | ||
1882 | static void bmp_active_disconnected(struct bmp_active *ba) | |
1883 | { | |
1884 | ba->bmp = NULL; | |
1885 | bmp_active_setup(ba); | |
1886 | } | |
1887 | ||
1888 | static void bmp_active_setup(struct bmp_active *ba) | |
1889 | { | |
1890 | THREAD_OFF(ba->t_timer); | |
1891 | THREAD_OFF(ba->t_read); | |
1892 | THREAD_OFF(ba->t_write); | |
1893 | ||
1894 | if (ba->bmp) | |
1895 | return; | |
1896 | if (ba->resq.callback) | |
1897 | return; | |
1898 | ||
1899 | if (ba->curretry > ba->maxretry) | |
1900 | ba->curretry = ba->maxretry; | |
1901 | ||
1902 | if (ba->socket == -1) | |
1903 | thread_add_timer_msec(bm->master, bmp_active_thread, ba, | |
1904 | ba->curretry, &ba->t_timer); | |
1905 | else { | |
1906 | thread_add_read(bm->master, bmp_active_thread, ba, ba->socket, | |
1907 | &ba->t_read); | |
1908 | thread_add_write(bm->master, bmp_active_thread, ba, ba->socket, | |
1909 | &ba->t_write); | |
1910 | } | |
1911 | } | |
1912 | ||
62b346ee | 1913 | static struct cmd_node bmp_node = { |
f4b8291f | 1914 | .name = "bmp", |
62b346ee | 1915 | .node = BMP_NODE, |
24389580 | 1916 | .parent_node = BGP_NODE, |
62b346ee DL |
1917 | .prompt = "%s(config-bgp-bmp)# " |
1918 | }; | |
ed18356f DL |
1919 | |
1920 | #define BMP_STR "BGP Monitoring Protocol\n" | |
1921 | ||
1922 | #ifndef VTYSH_EXTRACT_PL | |
33a9e196 | 1923 | #include "bgpd/bgp_bmp_clippy.c" |
ed18356f DL |
1924 | #endif |
1925 | ||
1926 | DEFPY_NOSH(bmp_targets_main, | |
1927 | bmp_targets_cmd, | |
1928 | "bmp targets BMPTARGETS", | |
1929 | BMP_STR | |
1930 | "Create BMP target group\n" | |
1931 | "Name of the BMP target group\n") | |
1932 | { | |
1933 | VTY_DECLVAR_CONTEXT(bgp, bgp); | |
1934 | struct bmp_targets *bt; | |
1935 | ||
1936 | bt = bmp_targets_get(bgp, bmptargets); | |
1937 | ||
1938 | VTY_PUSH_CONTEXT_SUB(BMP_NODE, bt); | |
1939 | return CMD_SUCCESS; | |
1940 | } | |
1941 | ||
1942 | DEFPY(no_bmp_targets_main, | |
1943 | no_bmp_targets_cmd, | |
1944 | "no bmp targets BMPTARGETS", | |
1945 | NO_STR | |
1946 | BMP_STR | |
1947 | "Delete BMP target group\n" | |
1948 | "Name of the BMP target group\n") | |
1949 | { | |
1950 | VTY_DECLVAR_CONTEXT(bgp, bgp); | |
1951 | struct bmp_targets *bt; | |
1952 | ||
1953 | bt = bmp_targets_find1(bgp, bmptargets); | |
1954 | if (!bt) { | |
1955 | vty_out(vty, "%% BMP target group not found\n"); | |
1956 | return CMD_WARNING; | |
1957 | } | |
1958 | bmp_targets_put(bt); | |
1959 | return CMD_SUCCESS; | |
1960 | } | |
1961 | ||
1962 | DEFPY(bmp_listener_main, | |
1963 | bmp_listener_cmd, | |
1964 | "bmp listener <X:X::X:X|A.B.C.D> port (1-65535)", | |
1965 | BMP_STR | |
1966 | "Listen for inbound BMP connections\n" | |
1967 | "IPv6 address to listen on\n" | |
1968 | "IPv4 address to listen on\n" | |
1969 | "TCP Port number\n" | |
1970 | "TCP Port number\n") | |
1971 | { | |
1972 | VTY_DECLVAR_CONTEXT_SUB(bmp_targets, bt); | |
1973 | struct bmp_listener *bl; | |
1974 | ||
1975 | bl = bmp_listener_get(bt, listener, port); | |
1976 | if (bl->sock == -1) | |
1977 | bmp_listener_start(bl); | |
1978 | ||
1979 | return CMD_SUCCESS; | |
1980 | } | |
1981 | ||
1982 | DEFPY(no_bmp_listener_main, | |
1983 | no_bmp_listener_cmd, | |
1984 | "no bmp listener <X:X::X:X|A.B.C.D> port (1-65535)", | |
1985 | NO_STR | |
1986 | BMP_STR | |
1987 | "Create BMP listener\n" | |
1988 | "IPv6 address to listen on\n" | |
1989 | "IPv4 address to listen on\n" | |
1990 | "TCP Port number\n" | |
1991 | "TCP Port number\n") | |
1992 | { | |
1993 | VTY_DECLVAR_CONTEXT_SUB(bmp_targets, bt); | |
1994 | struct bmp_listener *bl; | |
1995 | ||
1996 | bl = bmp_listener_find(bt, listener, port); | |
1997 | if (!bl) { | |
1998 | vty_out(vty, "%% BMP listener not found\n"); | |
1999 | return CMD_WARNING; | |
2000 | } | |
2001 | bmp_listener_stop(bl); | |
2002 | bmp_listener_put(bl); | |
2003 | return CMD_SUCCESS; | |
2004 | } | |
2005 | ||
2006 | DEFPY(bmp_connect, | |
2007 | bmp_connect_cmd, | |
3efd0893 | 2008 | "[no] bmp connect HOSTNAME port (1-65535) {min-retry (100-86400000)|max-retry (100-86400000)}", |
ed18356f DL |
2009 | NO_STR |
2010 | BMP_STR | |
2011 | "Actively establish connection to monitoring station\n" | |
2012 | "Monitoring station hostname or address\n" | |
2013 | "TCP port\n" | |
2014 | "TCP port\n" | |
2015 | "Minimum connection retry interval\n" | |
2016 | "Minimum connection retry interval (milliseconds)\n" | |
2017 | "Maximum connection retry interval\n" | |
2018 | "Maximum connection retry interval (milliseconds)\n") | |
2019 | { | |
2020 | VTY_DECLVAR_CONTEXT_SUB(bmp_targets, bt); | |
2021 | struct bmp_active *ba; | |
2022 | ||
2023 | if (no) { | |
2024 | ba = bmp_active_find(bt, hostname, port); | |
2025 | if (!ba) { | |
2026 | vty_out(vty, "%% No such active connection found\n"); | |
2027 | return CMD_WARNING; | |
2028 | } | |
2029 | bmp_active_put(ba); | |
2030 | return CMD_SUCCESS; | |
2031 | } | |
2032 | ||
2033 | ba = bmp_active_get(bt, hostname, port); | |
2034 | if (min_retry_str) | |
2035 | ba->minretry = min_retry; | |
2036 | if (max_retry_str) | |
2037 | ba->maxretry = max_retry; | |
2038 | ba->curretry = ba->minretry; | |
2039 | bmp_active_setup(ba); | |
2040 | ||
2041 | return CMD_SUCCESS; | |
2042 | } | |
2043 | ||
2044 | DEFPY(bmp_acl, | |
2045 | bmp_acl_cmd, | |
2046 | "[no] <ip|ipv6>$af access-list WORD", | |
2047 | NO_STR | |
2048 | IP_STR | |
2049 | IPV6_STR | |
2050 | "Access list to restrict BMP sessions\n" | |
2051 | "Access list name\n") | |
2052 | { | |
2053 | VTY_DECLVAR_CONTEXT_SUB(bmp_targets, bt); | |
2054 | char **what; | |
2055 | ||
2056 | if (no) | |
2057 | access_list = NULL; | |
2058 | if (!strcmp(af, "ipv6")) | |
2059 | what = &bt->acl6_name; | |
2060 | else | |
2061 | what = &bt->acl_name; | |
2062 | ||
2063 | XFREE(MTYPE_BMP_ACLNAME, *what); | |
2064 | if (access_list) | |
2065 | *what = XSTRDUP(MTYPE_BMP_ACLNAME, access_list); | |
2066 | ||
2067 | return CMD_SUCCESS; | |
2068 | } | |
2069 | ||
2070 | DEFPY(bmp_stats_cfg, | |
2071 | bmp_stats_cmd, | |
2072 | "[no] bmp stats [interval (100-86400000)]", | |
2073 | NO_STR | |
2074 | BMP_STR | |
2075 | "Send BMP statistics messages\n" | |
2076 | "Specify BMP stats interval\n" | |
2077 | "Interval (milliseconds) to send BMP Stats in\n") | |
2078 | { | |
2079 | VTY_DECLVAR_CONTEXT_SUB(bmp_targets, bt); | |
2080 | ||
2081 | THREAD_OFF(bt->t_stats); | |
2082 | if (no) | |
2083 | bt->stat_msec = 0; | |
2084 | else if (interval_str) | |
2085 | bt->stat_msec = interval; | |
2086 | else | |
2087 | bt->stat_msec = BMP_STAT_DEFAULT_TIMER; | |
2088 | ||
2089 | if (bt->stat_msec) | |
2090 | thread_add_timer_msec(bm->master, bmp_stats, bt, bt->stat_msec, | |
2091 | &bt->t_stats); | |
2092 | return CMD_SUCCESS; | |
2093 | } | |
2094 | ||
2095 | DEFPY(bmp_monitor_cfg, | |
2096 | bmp_monitor_cmd, | |
87102aa0 | 2097 | "[no] bmp monitor <ipv4|ipv6|l2vpn> <unicast|multicast|evpn> <pre-policy|post-policy>$policy", |
ed18356f DL |
2098 | NO_STR |
2099 | BMP_STR | |
2100 | "Send BMP route monitoring messages\n" | |
87102aa0 | 2101 | "Address Family\nAddress Family\nAddress Family\n" |
2102 | "Address Family\nAddress Family\nAddress Family\n" | |
ed18356f DL |
2103 | "Send state before policy and filter processing\n" |
2104 | "Send state with policy and filters applied\n") | |
2105 | { | |
2106 | int index = 0; | |
2107 | uint8_t flag, prev; | |
2108 | afi_t afi; | |
2109 | safi_t safi; | |
2110 | ||
2111 | VTY_DECLVAR_CONTEXT_SUB(bmp_targets, bt); | |
2112 | struct bmp *bmp; | |
2113 | ||
2114 | argv_find_and_parse_afi(argv, argc, &index, &afi); | |
2115 | argv_find_and_parse_safi(argv, argc, &index, &safi); | |
2116 | ||
2117 | if (policy[1] == 'r') | |
2118 | flag = BMP_MON_PREPOLICY; | |
2119 | else | |
2120 | flag = BMP_MON_POSTPOLICY; | |
2121 | ||
2122 | prev = bt->afimon[afi][safi]; | |
2123 | if (no) | |
2124 | bt->afimon[afi][safi] &= ~flag; | |
2125 | else | |
2126 | bt->afimon[afi][safi] |= flag; | |
2127 | ||
2128 | if (prev == bt->afimon[afi][safi]) | |
2129 | return CMD_SUCCESS; | |
2130 | ||
2131 | frr_each (bmp_session, &bt->sessions, bmp) { | |
2132 | if (bmp->syncafi == afi && bmp->syncsafi == safi) { | |
2133 | bmp->syncafi = AFI_MAX; | |
2134 | bmp->syncsafi = SAFI_MAX; | |
2135 | } | |
2136 | ||
2137 | if (!bt->afimon[afi][safi]) { | |
2138 | bmp->afistate[afi][safi] = BMP_AFI_INACTIVE; | |
2139 | continue; | |
2140 | } | |
2141 | ||
2142 | bmp->afistate[afi][safi] = BMP_AFI_NEEDSYNC; | |
2143 | } | |
2144 | ||
2145 | return CMD_SUCCESS; | |
2146 | } | |
2147 | ||
2148 | DEFPY(bmp_mirror_cfg, | |
2149 | bmp_mirror_cmd, | |
2150 | "[no] bmp mirror", | |
2151 | NO_STR | |
2152 | BMP_STR | |
2153 | "Send BMP route mirroring messages\n") | |
2154 | { | |
2155 | VTY_DECLVAR_CONTEXT_SUB(bmp_targets, bt); | |
2156 | struct bmp *bmp; | |
2157 | ||
2158 | if (bt->mirror == !no) | |
2159 | return CMD_SUCCESS; | |
2160 | ||
2161 | bt->mirror = !no; | |
2162 | if (bt->mirror) | |
2163 | return CMD_SUCCESS; | |
2164 | ||
2165 | frr_each (bmp_session, &bt->sessions, bmp) { | |
2166 | struct bmp_mirrorq *bmq; | |
2167 | ||
2168 | while ((bmq = bmp_pull_mirror(bmp))) | |
2169 | if (!bmq->refcount) | |
2170 | XFREE(MTYPE_BMP_MIRRORQ, bmq); | |
2171 | } | |
2172 | return CMD_SUCCESS; | |
2173 | } | |
2174 | ||
2175 | DEFPY(bmp_mirror_limit_cfg, | |
2176 | bmp_mirror_limit_cmd, | |
2177 | "bmp mirror buffer-limit (0-4294967294)", | |
2178 | BMP_STR | |
2179 | "Route Mirroring settings\n" | |
2180 | "Configure maximum memory used for buffered mirroring messages\n" | |
2181 | "Limit in bytes\n") | |
2182 | { | |
2183 | VTY_DECLVAR_CONTEXT(bgp, bgp); | |
2184 | struct bmp_bgp *bmpbgp; | |
2185 | ||
2186 | bmpbgp = bmp_bgp_get(bgp); | |
2187 | bmpbgp->mirror_qsizelimit = buffer_limit; | |
2188 | ||
2189 | return CMD_SUCCESS; | |
2190 | } | |
2191 | ||
2192 | DEFPY(no_bmp_mirror_limit_cfg, | |
2193 | no_bmp_mirror_limit_cmd, | |
2194 | "no bmp mirror buffer-limit [(0-4294967294)]", | |
2195 | NO_STR | |
2196 | BMP_STR | |
2197 | "Route Mirroring settings\n" | |
2198 | "Configure maximum memory used for buffered mirroring messages\n" | |
2199 | "Limit in bytes\n") | |
2200 | { | |
2201 | VTY_DECLVAR_CONTEXT(bgp, bgp); | |
2202 | struct bmp_bgp *bmpbgp; | |
2203 | ||
2204 | bmpbgp = bmp_bgp_get(bgp); | |
2205 | bmpbgp->mirror_qsizelimit = ~0UL; | |
2206 | ||
2207 | return CMD_SUCCESS; | |
2208 | } | |
2209 | ||
2210 | ||
2211 | DEFPY(show_bmp, | |
2212 | show_bmp_cmd, | |
2213 | "show bmp", | |
2214 | SHOW_STR | |
2215 | BMP_STR) | |
2216 | { | |
2217 | struct bmp_bgp *bmpbgp; | |
2218 | struct bmp_targets *bt; | |
2219 | struct bmp_listener *bl; | |
150470da | 2220 | struct bmp_active *ba; |
ed18356f DL |
2221 | struct bmp *bmp; |
2222 | struct ttable *tt; | |
2223 | char buf[SU_ADDRSTRLEN]; | |
150470da DL |
2224 | char uptime[BGP_UPTIME_LEN]; |
2225 | char *out; | |
ed18356f DL |
2226 | |
2227 | frr_each(bmp_bgph, &bmp_bgph, bmpbgp) { | |
2228 | vty_out(vty, "BMP state for BGP %s:\n\n", | |
2229 | bmpbgp->bgp->name_pretty); | |
2230 | vty_out(vty, " Route Mirroring %9zu bytes (%zu messages) pending\n", | |
2231 | bmpbgp->mirror_qsize, | |
2232 | bmp_mirrorq_count(&bmpbgp->mirrorq)); | |
2233 | vty_out(vty, " %9zu bytes maximum buffer used\n", | |
2234 | bmpbgp->mirror_qsizemax); | |
2235 | if (bmpbgp->mirror_qsizelimit != ~0UL) | |
2236 | vty_out(vty, " %9zu bytes buffer size limit\n", | |
2237 | bmpbgp->mirror_qsizelimit); | |
2238 | vty_out(vty, "\n"); | |
2239 | ||
2240 | frr_each(bmp_targets, &bmpbgp->targets, bt) { | |
2241 | vty_out(vty, " Targets \"%s\":\n", bt->name); | |
2242 | vty_out(vty, " Route Mirroring %sabled\n", | |
2243 | bt->mirror ? "en" : "dis"); | |
2244 | ||
2245 | afi_t afi; | |
2246 | safi_t safi; | |
2247 | ||
2248 | FOREACH_AFI_SAFI (afi, safi) { | |
2249 | const char *str = NULL; | |
2250 | ||
2251 | switch (bt->afimon[afi][safi]) { | |
2252 | case BMP_MON_PREPOLICY: | |
2253 | str = "pre-policy"; | |
2254 | break; | |
2255 | case BMP_MON_POSTPOLICY: | |
2256 | str = "post-policy"; | |
2257 | break; | |
2258 | case BMP_MON_PREPOLICY | BMP_MON_POSTPOLICY: | |
2259 | str = "pre-policy and post-policy"; | |
2260 | break; | |
2261 | } | |
2262 | if (!str) | |
2263 | continue; | |
2264 | vty_out(vty, " Route Monitoring %s %s %s\n", | |
2265 | afi2str(afi), safi2str(safi), str); | |
2266 | } | |
2267 | ||
2268 | vty_out(vty, " Listeners:\n"); | |
2269 | frr_each (bmp_listeners, &bt->listeners, bl) | |
2270 | vty_out(vty, " %s:%d\n", | |
2271 | sockunion2str(&bl->addr, buf, | |
2272 | SU_ADDRSTRLEN), bl->port); | |
2273 | ||
150470da DL |
2274 | vty_out(vty, "\n Outbound connections:\n"); |
2275 | tt = ttable_new(&ttable_styles[TTSTYLE_BLANK]); | |
2276 | ttable_add_row(tt, "remote|state||timer"); | |
2277 | ttable_rowseps(tt, 0, BOTTOM, true, '-'); | |
2278 | frr_each (bmp_actives, &bt->actives, ba) { | |
2279 | const char *state_str = "?"; | |
2280 | ||
2281 | if (ba->bmp) { | |
2282 | peer_uptime(ba->bmp->t_up.tv_sec, | |
2283 | uptime, sizeof(uptime), | |
2284 | false, NULL); | |
2285 | ttable_add_row(tt, "%s:%d|Up|%s|%s", | |
2286 | ba->hostname, ba->port, | |
2287 | ba->bmp->remote, uptime); | |
2288 | continue; | |
2289 | } | |
2290 | ||
2291 | uptime[0] = '\0'; | |
2292 | ||
2293 | if (ba->t_timer) { | |
2294 | long trem = thread_timer_remain_second( | |
2295 | ba->t_timer); | |
2296 | ||
2297 | peer_uptime(monotime(NULL) - trem, | |
2298 | uptime, sizeof(uptime), | |
2299 | false, NULL); | |
2300 | state_str = "RetryWait"; | |
2301 | } else if (ba->t_read) { | |
2302 | state_str = "Connecting"; | |
2303 | } else if (ba->resq.callback) { | |
2304 | state_str = "Resolving"; | |
2305 | } | |
2306 | ||
2307 | ttable_add_row(tt, "%s:%d|%s|%s|%s", | |
2308 | ba->hostname, ba->port, | |
2309 | state_str, | |
2310 | ba->last_err ? ba->last_err : "", | |
2311 | uptime); | |
2312 | continue; | |
2313 | } | |
2314 | out = ttable_dump(tt, "\n"); | |
2315 | vty_out(vty, "%s", out); | |
2316 | XFREE(MTYPE_TMP, out); | |
2317 | ttable_del(tt); | |
2318 | ||
ed18356f DL |
2319 | vty_out(vty, "\n %zu connected clients:\n", |
2320 | bmp_session_count(&bt->sessions)); | |
2321 | tt = ttable_new(&ttable_styles[TTSTYLE_BLANK]); | |
2322 | ttable_add_row(tt, "remote|uptime|MonSent|MirrSent|MirrLost|ByteSent|ByteQ|ByteQKernel"); | |
2323 | ttable_rowseps(tt, 0, BOTTOM, true, '-'); | |
2324 | ||
2325 | frr_each (bmp_session, &bt->sessions, bmp) { | |
2326 | uint64_t total; | |
2327 | size_t q, kq; | |
2328 | ||
2329 | pullwr_stats(bmp->pullwr, &total, &q, &kq); | |
2330 | ||
9e89da8c DL |
2331 | peer_uptime(bmp->t_up.tv_sec, uptime, |
2332 | sizeof(uptime), false, NULL); | |
2333 | ||
2334 | ttable_add_row(tt, "%s|%s|%Lu|%Lu|%Lu|%Lu|%zu|%zu", | |
2335 | bmp->remote, uptime, | |
ed18356f DL |
2336 | bmp->cnt_update, |
2337 | bmp->cnt_mirror, | |
2338 | bmp->cnt_mirror_overruns, | |
2339 | total, q, kq); | |
2340 | } | |
150470da | 2341 | out = ttable_dump(tt, "\n"); |
ed18356f DL |
2342 | vty_out(vty, "%s", out); |
2343 | XFREE(MTYPE_TMP, out); | |
2344 | ttable_del(tt); | |
2345 | vty_out(vty, "\n"); | |
2346 | } | |
2347 | } | |
2348 | ||
2349 | return CMD_SUCCESS; | |
2350 | } | |
2351 | ||
2352 | static int bmp_config_write(struct bgp *bgp, struct vty *vty) | |
2353 | { | |
2354 | struct bmp_bgp *bmpbgp = bmp_bgp_find(bgp); | |
2355 | struct bmp_targets *bt; | |
2356 | struct bmp_listener *bl; | |
2357 | struct bmp_active *ba; | |
2358 | char buf[SU_ADDRSTRLEN]; | |
2359 | afi_t afi; | |
2360 | safi_t safi; | |
2361 | ||
2362 | if (!bmpbgp) | |
2363 | return 0; | |
2364 | ||
2365 | if (bmpbgp->mirror_qsizelimit != ~0UL) | |
2366 | vty_out(vty, " !\n bmp mirror buffer-limit %zu\n", | |
2367 | bmpbgp->mirror_qsizelimit); | |
2368 | ||
2369 | frr_each(bmp_targets, &bmpbgp->targets, bt) { | |
2370 | vty_out(vty, " !\n bmp targets %s\n", bt->name); | |
2371 | ||
2372 | if (bt->acl6_name) | |
2373 | vty_out(vty, " ipv6 access-list %s\n", bt->acl6_name); | |
2374 | if (bt->acl_name) | |
2375 | vty_out(vty, " ip access-list %s\n", bt->acl_name); | |
2376 | ||
2377 | if (bt->stat_msec) | |
2378 | vty_out(vty, " bmp stats interval %d\n", | |
2379 | bt->stat_msec); | |
2380 | ||
2381 | if (bt->mirror) | |
2382 | vty_out(vty, " bmp mirror\n"); | |
2383 | ||
2384 | FOREACH_AFI_SAFI (afi, safi) { | |
2385 | const char *afi_str = (afi == AFI_IP) ? "ipv4" : "ipv6"; | |
2386 | ||
2387 | if (bt->afimon[afi][safi] & BMP_MON_PREPOLICY) | |
2388 | vty_out(vty, " bmp monitor %s %s pre-policy\n", | |
2389 | afi_str, safi2str(safi)); | |
2390 | if (bt->afimon[afi][safi] & BMP_MON_POSTPOLICY) | |
2391 | vty_out(vty, " bmp monitor %s %s post-policy\n", | |
2392 | afi_str, safi2str(safi)); | |
2393 | } | |
2394 | frr_each (bmp_listeners, &bt->listeners, bl) | |
2395 | vty_out(vty, " \n bmp listener %s port %d\n", | |
2396 | sockunion2str(&bl->addr, buf, SU_ADDRSTRLEN), | |
2397 | bl->port); | |
2398 | ||
2399 | frr_each (bmp_actives, &bt->actives, ba) | |
2400 | vty_out(vty, " bmp connect %s port %u min-retry %u max-retry %u\n", | |
2401 | ba->hostname, ba->port, ba->minretry, ba->maxretry); | |
2402 | } | |
2403 | ||
2404 | return 0; | |
2405 | } | |
2406 | ||
2407 | static int bgp_bmp_init(struct thread_master *tm) | |
2408 | { | |
612c2c15 | 2409 | install_node(&bmp_node); |
ed18356f DL |
2410 | install_default(BMP_NODE); |
2411 | install_element(BGP_NODE, &bmp_targets_cmd); | |
2412 | install_element(BGP_NODE, &no_bmp_targets_cmd); | |
2413 | ||
2414 | install_element(BMP_NODE, &bmp_listener_cmd); | |
2415 | install_element(BMP_NODE, &no_bmp_listener_cmd); | |
2416 | install_element(BMP_NODE, &bmp_connect_cmd); | |
2417 | install_element(BMP_NODE, &bmp_acl_cmd); | |
2418 | install_element(BMP_NODE, &bmp_stats_cmd); | |
2419 | install_element(BMP_NODE, &bmp_monitor_cmd); | |
2420 | install_element(BMP_NODE, &bmp_mirror_cmd); | |
2421 | ||
2422 | install_element(BGP_NODE, &bmp_mirror_limit_cmd); | |
2423 | install_element(BGP_NODE, &no_bmp_mirror_limit_cmd); | |
2424 | ||
2425 | install_element(VIEW_NODE, &show_bmp_cmd); | |
2426 | ||
2427 | resolver_init(tm); | |
0ba4eeec | 2428 | return 0; |
6c29258c YO |
2429 | } |
2430 | ||
0ba4eeec DL |
2431 | static int bgp_bmp_module_init(void) |
2432 | { | |
2433 | hook_register(bgp_packet_dump, bmp_mirror_packet); | |
ed18356f | 2434 | hook_register(bgp_packet_send, bmp_outgoing_packet); |
df9e8ae7 | 2435 | hook_register(peer_status_changed, bmp_peer_established); |
ed18356f DL |
2436 | hook_register(peer_backward_transition, bmp_peer_backward); |
2437 | hook_register(bgp_process, bmp_process); | |
2438 | hook_register(bgp_inst_config_write, bmp_config_write); | |
2439 | hook_register(bgp_inst_delete, bmp_bgp_del); | |
0ba4eeec DL |
2440 | hook_register(frr_late_init, bgp_bmp_init); |
2441 | return 0; | |
2442 | } | |
6c29258c | 2443 | |
0ba4eeec DL |
2444 | FRR_MODULE_SETUP(.name = "bgpd_bmp", .version = FRR_VERSION, |
2445 | .description = "bgpd BMP module", | |
2446 | .init = bgp_bmp_module_init) |