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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 | 36 | #include "libfrr.h" |
09781197 | 37 | #include "lib/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 | |
960b9a53 | 92 | DECLARE_HASH(bmp_bgph, struct bmp_bgp, bbi, bmp_bgp_cmp, bmp_bgp_hash); |
ed18356f DL |
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 | 111 | DECLARE_HASH(bmp_peerh, struct bmp_bgp_peer, bpi, |
960b9a53 | 112 | bmp_bgp_peer_cmp, bmp_bgp_peer_hash); |
6c29258c | 113 | |
ed18356f | 114 | struct bmp_peerh_head bmp_peerh; |
6c29258c | 115 | |
960b9a53 | 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 | |
960b9a53 DL |
135 | DECLARE_SORTLIST_UNIQ(bmp_listeners, struct bmp_listener, bli, |
136 | bmp_listener_cmp); | |
ed18356f DL |
137 | |
138 | static int bmp_targets_cmp(const struct bmp_targets *a, | |
139 | const struct bmp_targets *b) | |
140 | { | |
141 | return strcmp(a->name, b->name); | |
6c29258c YO |
142 | } |
143 | ||
960b9a53 | 144 | DECLARE_SORTLIST_UNIQ(bmp_targets, struct bmp_targets, bti, bmp_targets_cmp); |
ed18356f | 145 | |
960b9a53 | 146 | DECLARE_LIST(bmp_session, struct bmp, bsi); |
ed18356f | 147 | |
960b9a53 | 148 | DECLARE_DLIST(bmp_qlist, struct bmp_queue_entry, bli); |
ed18356f DL |
149 | |
150 | static int bmp_qhash_cmp(const struct bmp_queue_entry *a, | |
151 | const struct bmp_queue_entry *b) | |
6c29258c | 152 | { |
ed18356f | 153 | int ret; |
87102aa0 | 154 | if (a->afi == AFI_L2VPN && a->safi == SAFI_EVPN && b->afi == AFI_L2VPN |
155 | && b->safi == SAFI_EVPN) { | |
156 | ret = prefix_cmp(&a->rd, &b->rd); | |
157 | if (ret) | |
158 | return ret; | |
159 | } else if (a->afi == AFI_L2VPN && a->safi == SAFI_EVPN) | |
160 | return 1; | |
161 | else if (b->afi == AFI_L2VPN && b->safi == SAFI_EVPN) | |
162 | return -1; | |
163 | ||
ed18356f DL |
164 | ret = prefix_cmp(&a->p, &b->p); |
165 | if (ret) | |
166 | return ret; | |
167 | ret = memcmp(&a->peerid, &b->peerid, | |
168 | offsetof(struct bmp_queue_entry, refcount) - | |
169 | offsetof(struct bmp_queue_entry, peerid)); | |
170 | return ret; | |
6c29258c YO |
171 | } |
172 | ||
ed18356f | 173 | static uint32_t bmp_qhash_hkey(const struct bmp_queue_entry *e) |
6c29258c | 174 | { |
ed18356f DL |
175 | uint32_t key; |
176 | ||
177 | key = prefix_hash_key((void *)&e->p); | |
178 | key = jhash(&e->peerid, | |
87102aa0 | 179 | offsetof(struct bmp_queue_entry, refcount) |
180 | - offsetof(struct bmp_queue_entry, peerid), | |
181 | key); | |
182 | if (e->afi == AFI_L2VPN && e->safi == SAFI_EVPN) | |
183 | key = jhash(&e->rd, | |
184 | offsetof(struct bmp_queue_entry, rd) | |
185 | - offsetof(struct bmp_queue_entry, refcount) | |
186 | + PSIZE(e->rd.prefixlen), | |
187 | key); | |
188 | ||
ed18356f DL |
189 | return key; |
190 | } | |
6c29258c | 191 | |
ed18356f | 192 | DECLARE_HASH(bmp_qhash, struct bmp_queue_entry, bhi, |
960b9a53 | 193 | bmp_qhash_cmp, bmp_qhash_hkey); |
6c29258c | 194 | |
ed18356f DL |
195 | static int bmp_active_cmp(const struct bmp_active *a, |
196 | const struct bmp_active *b) | |
197 | { | |
198 | int c; | |
199 | ||
200 | c = strcmp(a->hostname, b->hostname); | |
201 | if (c) | |
202 | return c; | |
203 | if (a->port < b->port) | |
204 | return -1; | |
205 | if (a->port > b->port) | |
206 | return 1; | |
6c29258c YO |
207 | return 0; |
208 | } | |
209 | ||
960b9a53 | 210 | DECLARE_SORTLIST_UNIQ(bmp_actives, struct bmp_active, bai, bmp_active_cmp); |
ed18356f DL |
211 | |
212 | static struct bmp *bmp_new(struct bmp_targets *bt, int bmp_sock) | |
6c29258c | 213 | { |
ed18356f DL |
214 | struct bmp *new = XCALLOC(MTYPE_BMP_CONN, sizeof(struct bmp)); |
215 | afi_t afi; | |
216 | safi_t safi; | |
217 | ||
218 | monotime(&new->t_up); | |
219 | new->targets = bt; | |
220 | new->socket = bmp_sock; | |
221 | new->syncafi = AFI_MAX; | |
222 | ||
223 | FOREACH_AFI_SAFI (afi, safi) { | |
224 | new->afistate[afi][safi] = bt->afimon[afi][safi] | |
225 | ? BMP_AFI_NEEDSYNC : BMP_AFI_INACTIVE; | |
226 | } | |
227 | ||
228 | bmp_session_add_tail(&bt->sessions, new); | |
229 | return new; | |
6c29258c | 230 | } |
6c29258c | 231 | |
ed18356f | 232 | static void bmp_free(struct bmp *bmp) |
6c29258c | 233 | { |
ed18356f DL |
234 | bmp_session_del(&bmp->targets->sessions, bmp); |
235 | XFREE(MTYPE_BMP_CONN, bmp); | |
6c29258c YO |
236 | } |
237 | ||
238 | static void bmp_common_hdr(struct stream *s, uint8_t ver, uint8_t type) | |
239 | { | |
240 | stream_putc(s, ver); | |
241 | stream_putl(s, 0); //dummy message length. will be set later. | |
242 | stream_putc(s, type); | |
243 | } | |
244 | ||
ed18356f DL |
245 | static void bmp_per_peer_hdr(struct stream *s, struct peer *peer, |
246 | uint8_t flags, const struct timeval *tv) | |
6c29258c | 247 | { |
6c29258c YO |
248 | char peer_distinguisher[8]; |
249 | ||
250 | #define BMP_PEER_TYPE_GLOBAL_INSTANCE 0 | |
251 | #define BMP_PEER_TYPE_RD_INSTANCE 1 | |
252 | #define BMP_PEER_TYPE_LOCAL_INSTANCE 2 | |
253 | ||
254 | #define BMP_PEER_FLAG_V (1 << 7) | |
255 | #define BMP_PEER_FLAG_L (1 << 6) | |
256 | #define BMP_PEER_FLAG_A (1 << 5) | |
257 | ||
258 | /* Peer Type */ | |
259 | stream_putc(s, BMP_PEER_TYPE_GLOBAL_INSTANCE); | |
260 | ||
261 | /* Peer Flags */ | |
ed18356f DL |
262 | if (peer->su.sa.sa_family == AF_INET6) |
263 | SET_FLAG(flags, BMP_PEER_FLAG_V); | |
264 | else | |
265 | UNSET_FLAG(flags, BMP_PEER_FLAG_V); | |
266 | stream_putc(s, flags); | |
6c29258c YO |
267 | |
268 | /* Peer Distinguisher */ | |
269 | memset (&peer_distinguisher[0], 0, 8); | |
270 | stream_put(s, &peer_distinguisher[0], 8); | |
271 | ||
272 | /* Peer Address */ | |
ed18356f DL |
273 | if (peer->su.sa.sa_family == AF_INET6) |
274 | stream_put(s, &peer->su.sin6.sin6_addr, 16); | |
275 | else if (peer->su.sa.sa_family == AF_INET) { | |
276 | stream_putl(s, 0); | |
277 | stream_putl(s, 0); | |
278 | stream_putl(s, 0); | |
279 | stream_put_in_addr(s, &peer->su.sin.sin_addr); | |
280 | } else { | |
281 | stream_putl(s, 0); | |
6c29258c YO |
282 | stream_putl(s, 0); |
283 | stream_putl(s, 0); | |
284 | stream_putl(s, 0); | |
6c29258c YO |
285 | } |
286 | ||
287 | /* Peer AS */ | |
288 | stream_putl(s, peer->as); | |
289 | ||
290 | /* Peer BGP ID */ | |
291 | stream_put_in_addr(s, &peer->remote_id); | |
292 | ||
293 | /* Timestamp */ | |
ed18356f DL |
294 | if (tv) { |
295 | stream_putl(s, tv->tv_sec); | |
296 | stream_putl(s, tv->tv_usec); | |
297 | } else { | |
298 | stream_putl(s, 0); | |
299 | stream_putl(s, 0); | |
300 | } | |
6c29258c YO |
301 | } |
302 | ||
ed18356f DL |
303 | static void bmp_put_info_tlv(struct stream *s, uint16_t type, |
304 | const char *string) | |
6c29258c YO |
305 | { |
306 | int len = strlen (string); | |
307 | stream_putw(s, type); | |
308 | stream_putw(s, len); | |
309 | stream_put(s, string, len); | |
310 | } | |
311 | ||
312 | static int bmp_send_initiation(struct bmp *bmp) | |
313 | { | |
314 | int len; | |
315 | struct stream *s; | |
316 | s = stream_new(BGP_MAX_PACKET_SIZE); | |
317 | bmp_common_hdr(s, BMP_VERSION_3, BMP_TYPE_INITIATION); | |
318 | ||
319 | #define BMP_INFO_TYPE_SYSDESCR 1 | |
320 | #define BMP_INFO_TYPE_SYSNAME 2 | |
ed18356f DL |
321 | bmp_put_info_tlv(s, BMP_INFO_TYPE_SYSDESCR, |
322 | FRR_FULL_NAME " " FRR_VER_SHORT); | |
323 | bmp_put_info_tlv(s, BMP_INFO_TYPE_SYSNAME, cmd_hostname_get()); | |
6c29258c YO |
324 | |
325 | len = stream_get_endp(s); | |
326 | stream_putl_at(s, BMP_LENGTH_POS, len); //message length is set. | |
327 | ||
ed18356f DL |
328 | pullwr_write_stream(bmp->pullwr, s); |
329 | stream_free(s); | |
6c29258c YO |
330 | return 0; |
331 | } | |
332 | ||
ed18356f DL |
333 | static void bmp_notify_put(struct stream *s, struct bgp_notify *nfy) |
334 | { | |
335 | size_t len_pos; | |
336 | uint8_t marker[16] = { | |
337 | 0xff, 0xff, 0xff, 0xff, | |
338 | 0xff, 0xff, 0xff, 0xff, | |
339 | 0xff, 0xff, 0xff, 0xff, | |
340 | 0xff, 0xff, 0xff, 0xff, | |
341 | }; | |
342 | ||
343 | stream_put(s, marker, sizeof(marker)); | |
344 | len_pos = stream_get_endp(s); | |
345 | stream_putw(s, 0); | |
346 | stream_putc(s, BGP_MSG_NOTIFY); | |
347 | stream_putc(s, nfy->code); | |
348 | stream_putc(s, nfy->subcode); | |
349 | stream_put(s, nfy->data, nfy->length); | |
350 | ||
351 | stream_putw_at(s, len_pos, stream_get_endp(s) - len_pos | |
352 | + sizeof(marker)); | |
353 | } | |
354 | ||
355 | static struct stream *bmp_peerstate(struct peer *peer, bool down) | |
6c29258c | 356 | { |
6c29258c | 357 | struct stream *s; |
ed18356f DL |
358 | size_t len; |
359 | struct timeval uptime, uptime_real; | |
6c29258c | 360 | |
ed18356f DL |
361 | uptime.tv_sec = peer->uptime; |
362 | uptime.tv_usec = 0; | |
363 | monotime_to_realtime(&uptime, &uptime_real); | |
6c29258c | 364 | |
ed18356f | 365 | #define BGP_BMP_MAX_PACKET_SIZE 1024 |
6c29258c | 366 | s = stream_new(BGP_MAX_PACKET_SIZE); |
6c29258c | 367 | |
feb17238 | 368 | if (peer_established(peer) && !down) { |
ed18356f | 369 | struct bmp_bgp_peer *bbpeer; |
6c29258c | 370 | |
ed18356f DL |
371 | bmp_common_hdr(s, BMP_VERSION_3, |
372 | BMP_TYPE_PEER_UP_NOTIFICATION); | |
373 | bmp_per_peer_hdr(s, peer, 0, &uptime_real); | |
6c29258c YO |
374 | |
375 | /* Local Address (16 bytes) */ | |
376 | if (peer->su_local->sa.sa_family == AF_INET6) | |
377 | stream_put(s, &peer->su_local->sin6.sin6_addr, 16); | |
378 | else if (peer->su_local->sa.sa_family == AF_INET) { | |
379 | stream_putl(s, 0); | |
380 | stream_putl(s, 0); | |
381 | stream_putl(s, 0); | |
382 | stream_put_in_addr(s, &peer->su_local->sin.sin_addr); | |
383 | } | |
384 | ||
385 | /* Local Port, Remote Port */ | |
386 | if (peer->su_local->sa.sa_family == AF_INET6) | |
387 | stream_putw(s, peer->su_local->sin6.sin6_port); | |
388 | else if (peer->su_local->sa.sa_family == AF_INET) | |
389 | stream_putw(s, peer->su_local->sin.sin_port); | |
390 | if (peer->su_remote->sa.sa_family == AF_INET6) | |
391 | stream_putw(s, peer->su_remote->sin6.sin6_port); | |
392 | else if (peer->su_remote->sa.sa_family == AF_INET) | |
393 | stream_putw(s, peer->su_remote->sin.sin_port); | |
394 | ||
ed18356f DL |
395 | static const uint8_t dummy_open[] = { |
396 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
397 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
398 | 0x00, 0x13, 0x01, | |
399 | }; | |
6c29258c | 400 | |
ed18356f | 401 | bbpeer = bmp_bgp_peer_find(peer->qobj_node.nid); |
6c29258c | 402 | |
ed18356f DL |
403 | if (bbpeer && bbpeer->open_tx) |
404 | stream_put(s, bbpeer->open_tx, bbpeer->open_tx_len); | |
405 | else { | |
406 | stream_put(s, dummy_open, sizeof(dummy_open)); | |
63efca0e DL |
407 | zlog_warn("bmp: missing TX OPEN message for peer %s", |
408 | peer->host); | |
ed18356f DL |
409 | } |
410 | if (bbpeer && bbpeer->open_rx) | |
411 | stream_put(s, bbpeer->open_rx, bbpeer->open_rx_len); | |
412 | else { | |
413 | stream_put(s, dummy_open, sizeof(dummy_open)); | |
63efca0e DL |
414 | zlog_warn("bmp: missing RX OPEN message for peer %s", |
415 | peer->host); | |
ed18356f | 416 | } |
6c29258c | 417 | |
ed18356f DL |
418 | if (peer->desc) |
419 | bmp_put_info_tlv(s, 0, peer->desc); | |
420 | } else { | |
421 | uint8_t type; | |
422 | size_t type_pos; | |
423 | ||
424 | bmp_common_hdr(s, BMP_VERSION_3, | |
425 | BMP_TYPE_PEER_DOWN_NOTIFICATION); | |
426 | bmp_per_peer_hdr(s, peer, 0, &uptime_real); | |
427 | ||
428 | type_pos = stream_get_endp(s); | |
429 | stream_putc(s, 0); /* placeholder for down reason */ | |
430 | ||
431 | switch (peer->last_reset) { | |
432 | case PEER_DOWN_NOTIFY_RECEIVED: | |
433 | type = BMP_PEERDOWN_REMOTE_NOTIFY; | |
434 | bmp_notify_put(s, &peer->notify); | |
435 | break; | |
436 | case PEER_DOWN_CLOSE_SESSION: | |
437 | type = BMP_PEERDOWN_REMOTE_CLOSE; | |
438 | break; | |
21e8caa2 QY |
439 | case PEER_DOWN_WAITING_NHT: |
440 | type = BMP_PEERDOWN_LOCAL_FSM; | |
441 | stream_putw(s, BGP_FSM_TcpConnectionFails); | |
442 | break; | |
443 | /* | |
444 | * TODO: Map remaining PEER_DOWN_* reasons to RFC event codes. | |
445 | * TODO: Implement BMP_PEERDOWN_LOCAL_NOTIFY. | |
446 | * | |
447 | * See RFC7854 ss. 4.9 | |
448 | */ | |
ed18356f | 449 | default: |
21e8caa2 QY |
450 | type = BMP_PEERDOWN_LOCAL_FSM; |
451 | stream_putw(s, BMP_PEER_DOWN_NO_RELEVANT_EVENT_CODE); | |
ed18356f | 452 | break; |
6c29258c | 453 | } |
ed18356f | 454 | stream_putc_at(s, type_pos, type); |
6c29258c YO |
455 | } |
456 | ||
ed18356f DL |
457 | len = stream_get_endp(s); |
458 | stream_putl_at(s, BMP_LENGTH_POS, len); //message length is set. | |
459 | return s; | |
460 | } | |
461 | ||
462 | ||
463 | static int bmp_send_peerup(struct bmp *bmp) | |
464 | { | |
465 | struct peer *peer; | |
466 | struct listnode *node; | |
467 | struct stream *s; | |
468 | ||
469 | /* Walk down all peers */ | |
470 | for (ALL_LIST_ELEMENTS_RO(bmp->targets->bgp->peer, node, peer)) { | |
471 | s = bmp_peerstate(peer, false); | |
472 | pullwr_write_stream(bmp->pullwr, s); | |
473 | stream_free(s); | |
474 | } | |
6c29258c YO |
475 | |
476 | return 0; | |
477 | } | |
478 | ||
ed18356f DL |
479 | /* XXX: kludge - filling the pullwr's buffer */ |
480 | static void bmp_send_all(struct bmp_bgp *bmpbgp, struct stream *s) | |
481 | { | |
482 | struct bmp_targets *bt; | |
483 | struct bmp *bmp; | |
484 | ||
485 | frr_each(bmp_targets, &bmpbgp->targets, bt) | |
486 | frr_each(bmp_session, &bt->sessions, bmp) | |
487 | pullwr_write_stream(bmp->pullwr, s); | |
488 | stream_free(s); | |
489 | } | |
490 | ||
491 | /* | |
492 | * Route Mirroring | |
493 | */ | |
494 | ||
495 | #define BMP_MIRROR_TLV_TYPE_BGP_MESSAGE 0 | |
496 | #define BMP_MIRROR_TLV_TYPE_INFO 1 | |
497 | ||
498 | #define BMP_MIRROR_INFO_CODE_ERRORPDU 0 | |
499 | #define BMP_MIRROR_INFO_CODE_LOSTMSGS 1 | |
500 | ||
501 | static struct bmp_mirrorq *bmp_pull_mirror(struct bmp *bmp) | |
502 | { | |
503 | struct bmp_mirrorq *bmq; | |
504 | ||
505 | bmq = bmp->mirrorpos; | |
506 | if (!bmq) | |
507 | return NULL; | |
508 | ||
509 | bmp->mirrorpos = bmp_mirrorq_next(&bmp->targets->bmpbgp->mirrorq, bmq); | |
510 | ||
511 | bmq->refcount--; | |
512 | if (!bmq->refcount) { | |
513 | bmp->targets->bmpbgp->mirror_qsize -= sizeof(*bmq) + bmq->len; | |
514 | bmp_mirrorq_del(&bmp->targets->bmpbgp->mirrorq, bmq); | |
515 | } | |
516 | return bmq; | |
517 | } | |
518 | ||
519 | static void bmp_mirror_cull(struct bmp_bgp *bmpbgp) | |
520 | { | |
521 | while (bmpbgp->mirror_qsize > bmpbgp->mirror_qsizelimit) { | |
522 | struct bmp_mirrorq *bmq, *inner; | |
523 | struct bmp_targets *bt; | |
524 | struct bmp *bmp; | |
525 | ||
526 | bmq = bmp_mirrorq_first(&bmpbgp->mirrorq); | |
527 | ||
528 | frr_each(bmp_targets, &bmpbgp->targets, bt) { | |
529 | if (!bt->mirror) | |
530 | continue; | |
531 | frr_each(bmp_session, &bt->sessions, bmp) { | |
532 | if (bmp->mirrorpos != bmq) | |
533 | continue; | |
534 | ||
535 | while ((inner = bmp_pull_mirror(bmp))) { | |
536 | if (!inner->refcount) | |
537 | XFREE(MTYPE_BMP_MIRRORQ, | |
538 | inner); | |
539 | } | |
540 | ||
541 | zlog_warn("bmp[%s] lost mirror messages due to buffer size limit", | |
542 | bmp->remote); | |
543 | bmp->mirror_lost = true; | |
544 | pullwr_bump(bmp->pullwr); | |
545 | } | |
546 | } | |
547 | } | |
548 | } | |
549 | ||
d35a6c28 DL |
550 | static int bmp_mirror_packet(struct peer *peer, uint8_t type, bgp_size_t size, |
551 | struct stream *packet) | |
6c29258c | 552 | { |
ed18356f DL |
553 | struct bmp_bgp *bmpbgp = bmp_bgp_find(peer->bgp); |
554 | struct timeval tv; | |
555 | struct bmp_mirrorq *qitem; | |
556 | struct bmp_targets *bt; | |
6c29258c | 557 | struct bmp *bmp; |
6c29258c | 558 | |
e0302d7e QY |
559 | frrtrace(3, frr_bgp, bmp_mirror_packet, peer, type, packet); |
560 | ||
ed18356f DL |
561 | gettimeofday(&tv, NULL); |
562 | ||
563 | if (type == BGP_MSG_OPEN) { | |
564 | struct bmp_bgp_peer *bbpeer = bmp_bgp_peer_get(peer); | |
565 | ||
566 | XFREE(MTYPE_BMP_OPEN, bbpeer->open_rx); | |
567 | ||
568 | bbpeer->open_rx_len = size; | |
569 | bbpeer->open_rx = XMALLOC(MTYPE_BMP_OPEN, size); | |
570 | memcpy(bbpeer->open_rx, packet->data, size); | |
571 | } | |
572 | ||
573 | if (!bmpbgp) | |
d35a6c28 | 574 | return 0; |
6c29258c | 575 | |
ed18356f DL |
576 | qitem = XCALLOC(MTYPE_BMP_MIRRORQ, sizeof(*qitem) + size); |
577 | qitem->peerid = peer->qobj_node.nid; | |
578 | qitem->tv = tv; | |
579 | qitem->len = size; | |
580 | memcpy(qitem->data, packet->data, size); | |
581 | ||
582 | frr_each(bmp_targets, &bmpbgp->targets, bt) { | |
583 | if (!bt->mirror) | |
584 | continue; | |
585 | frr_each(bmp_session, &bt->sessions, bmp) { | |
586 | qitem->refcount++; | |
587 | if (!bmp->mirrorpos) | |
588 | bmp->mirrorpos = qitem; | |
589 | pullwr_bump(bmp->pullwr); | |
590 | } | |
591 | } | |
592 | if (qitem->refcount == 0) | |
593 | XFREE(MTYPE_BMP_MIRRORQ, qitem); | |
594 | else { | |
595 | bmpbgp->mirror_qsize += sizeof(*qitem) + size; | |
596 | bmp_mirrorq_add_tail(&bmpbgp->mirrorq, qitem); | |
597 | ||
598 | bmp_mirror_cull(bmpbgp); | |
599 | ||
600 | bmpbgp->mirror_qsizemax = MAX(bmpbgp->mirror_qsizemax, | |
601 | bmpbgp->mirror_qsize); | |
602 | } | |
603 | return 0; | |
604 | } | |
605 | ||
606 | static void bmp_wrmirror_lost(struct bmp *bmp, struct pullwr *pullwr) | |
607 | { | |
608 | struct stream *s; | |
609 | struct timeval tv; | |
610 | ||
611 | gettimeofday(&tv, NULL); | |
612 | ||
613 | s = stream_new(BGP_MAX_PACKET_SIZE); | |
614 | ||
615 | bmp_common_hdr(s, BMP_VERSION_3, BMP_TYPE_ROUTE_MIRRORING); | |
616 | bmp_per_peer_hdr(s, bmp->targets->bgp->peer_self, 0, &tv); | |
617 | ||
618 | stream_putw(s, BMP_MIRROR_TLV_TYPE_INFO); | |
619 | stream_putw(s, 2); | |
620 | stream_putw(s, BMP_MIRROR_INFO_CODE_LOSTMSGS); | |
621 | stream_putl_at(s, BMP_LENGTH_POS, stream_get_endp(s)); | |
622 | ||
623 | bmp->cnt_mirror_overruns++; | |
624 | pullwr_write_stream(bmp->pullwr, s); | |
625 | stream_free(s); | |
626 | } | |
627 | ||
628 | static bool bmp_wrmirror(struct bmp *bmp, struct pullwr *pullwr) | |
629 | { | |
630 | struct bmp_mirrorq *bmq; | |
631 | struct peer *peer; | |
632 | bool written = false; | |
633 | ||
634 | if (bmp->mirror_lost) { | |
635 | bmp_wrmirror_lost(bmp, pullwr); | |
636 | bmp->mirror_lost = false; | |
637 | return true; | |
638 | } | |
639 | ||
640 | bmq = bmp_pull_mirror(bmp); | |
641 | if (!bmq) | |
642 | return false; | |
643 | ||
644 | peer = QOBJ_GET_TYPESAFE(bmq->peerid, peer); | |
645 | if (!peer) { | |
646 | zlog_info("bmp: skipping mirror message for deleted peer"); | |
647 | goto out; | |
648 | } | |
649 | ||
650 | struct stream *s; | |
6c29258c YO |
651 | s = stream_new(BGP_MAX_PACKET_SIZE); |
652 | ||
653 | bmp_common_hdr(s, BMP_VERSION_3, BMP_TYPE_ROUTE_MIRRORING); | |
ed18356f | 654 | bmp_per_peer_hdr(s, peer, 0, &bmq->tv); |
6c29258c YO |
655 | |
656 | /* BMP Mirror TLV. */ | |
6c29258c | 657 | stream_putw(s, BMP_MIRROR_TLV_TYPE_BGP_MESSAGE); |
ed18356f DL |
658 | stream_putw(s, bmq->len); |
659 | stream_putl_at(s, BMP_LENGTH_POS, stream_get_endp(s) + bmq->len); | |
6c29258c | 660 | |
ed18356f DL |
661 | bmp->cnt_mirror++; |
662 | pullwr_write_stream(bmp->pullwr, s); | |
663 | pullwr_write(bmp->pullwr, bmq->data, bmq->len); | |
6c29258c | 664 | |
ed18356f DL |
665 | stream_free(s); |
666 | written = true; | |
6c29258c | 667 | |
ed18356f DL |
668 | out: |
669 | if (!bmq->refcount) | |
670 | XFREE(MTYPE_BMP_MIRRORQ, bmq); | |
671 | return written; | |
6c29258c YO |
672 | } |
673 | ||
ed18356f DL |
674 | static int bmp_outgoing_packet(struct peer *peer, uint8_t type, bgp_size_t size, |
675 | struct stream *packet) | |
6c29258c | 676 | { |
ed18356f | 677 | if (type == BGP_MSG_OPEN) { |
e0302d7e QY |
678 | frrtrace(2, frr_bgp, bmp_update_saved_open, peer, packet); |
679 | ||
ed18356f | 680 | struct bmp_bgp_peer *bbpeer = bmp_bgp_peer_get(peer); |
6c29258c | 681 | |
ed18356f | 682 | XFREE(MTYPE_BMP_OPEN, bbpeer->open_tx); |
6c29258c | 683 | |
ed18356f DL |
684 | bbpeer->open_tx_len = size; |
685 | bbpeer->open_tx = XMALLOC(MTYPE_BMP_OPEN, size); | |
686 | memcpy(bbpeer->open_tx, packet->data, size); | |
687 | } | |
688 | return 0; | |
689 | } | |
6c29258c | 690 | |
ed18356f DL |
691 | static int bmp_peer_established(struct peer *peer) |
692 | { | |
693 | struct bmp_bgp *bmpbgp = bmp_bgp_find(peer->bgp); | |
6c29258c | 694 | |
e0302d7e QY |
695 | frrtrace(1, frr_bgp, bmp_peer_status_changed, peer); |
696 | ||
ed18356f DL |
697 | if (!bmpbgp) |
698 | return 0; | |
6c29258c | 699 | |
df9e8ae7 | 700 | /* Check if this peer just went to Established */ |
fd2e2db6 | 701 | if ((peer->ostatus != OpenConfirm) || !(peer_established(peer))) |
df9e8ae7 MS |
702 | return 0; |
703 | ||
ed18356f DL |
704 | if (peer->doppelganger && (peer->doppelganger->status != Deleted)) { |
705 | struct bmp_bgp_peer *bbpeer, *bbdopp; | |
6c29258c | 706 | |
ed18356f DL |
707 | bbpeer = bmp_bgp_peer_get(peer); |
708 | bbdopp = bmp_bgp_peer_find(peer->doppelganger->qobj_node.nid); | |
709 | if (bbdopp) { | |
710 | XFREE(MTYPE_BMP_OPEN, bbpeer->open_tx); | |
711 | XFREE(MTYPE_BMP_OPEN, bbpeer->open_rx); | |
6c29258c | 712 | |
ed18356f DL |
713 | bbpeer->open_tx = bbdopp->open_tx; |
714 | bbpeer->open_tx_len = bbdopp->open_tx_len; | |
715 | bbpeer->open_rx = bbdopp->open_rx; | |
716 | bbpeer->open_rx_len = bbdopp->open_rx_len; | |
6c29258c | 717 | |
ed18356f DL |
718 | bmp_peerh_del(&bmp_peerh, bbdopp); |
719 | XFREE(MTYPE_BMP_PEER, bbdopp); | |
720 | } | |
6c29258c | 721 | } |
ed18356f DL |
722 | |
723 | bmp_send_all(bmpbgp, bmp_peerstate(peer, false)); | |
6c29258c YO |
724 | return 0; |
725 | } | |
726 | ||
ed18356f | 727 | static int bmp_peer_backward(struct peer *peer) |
6c29258c | 728 | { |
ed18356f DL |
729 | struct bmp_bgp *bmpbgp = bmp_bgp_find(peer->bgp); |
730 | struct bmp_bgp_peer *bbpeer; | |
6c29258c | 731 | |
e0302d7e QY |
732 | frrtrace(1, frr_bgp, bmp_peer_backward_transition, peer); |
733 | ||
ed18356f DL |
734 | if (!bmpbgp) |
735 | return 0; | |
6c29258c | 736 | |
ed18356f DL |
737 | bbpeer = bmp_bgp_peer_find(peer->qobj_node.nid); |
738 | if (bbpeer) { | |
739 | XFREE(MTYPE_BMP_OPEN, bbpeer->open_tx); | |
740 | bbpeer->open_tx_len = 0; | |
741 | XFREE(MTYPE_BMP_OPEN, bbpeer->open_rx); | |
742 | bbpeer->open_rx_len = 0; | |
743 | } | |
6c29258c | 744 | |
ed18356f DL |
745 | bmp_send_all(bmpbgp, bmp_peerstate(peer, true)); |
746 | return 0; | |
747 | } | |
6c29258c | 748 | |
ed18356f DL |
749 | static void bmp_eor(struct bmp *bmp, afi_t afi, safi_t safi, uint8_t flags) |
750 | { | |
751 | struct peer *peer; | |
752 | struct listnode *node; | |
753 | struct stream *s, *s2; | |
754 | iana_afi_t pkt_afi; | |
755 | iana_safi_t pkt_safi; | |
6c29258c | 756 | |
e0302d7e QY |
757 | frrtrace(3, frr_bgp, bmp_eor, afi, safi, flags); |
758 | ||
ed18356f | 759 | s = stream_new(BGP_MAX_PACKET_SIZE); |
6c29258c | 760 | |
ed18356f DL |
761 | /* Make BGP update packet. */ |
762 | bgp_packet_set_marker(s, BGP_MSG_UPDATE); | |
6c29258c | 763 | |
ed18356f DL |
764 | /* Unfeasible Routes Length */ |
765 | stream_putw(s, 0); | |
6c29258c | 766 | |
ed18356f DL |
767 | if (afi == AFI_IP && safi == SAFI_UNICAST) { |
768 | /* Total Path Attribute Length */ | |
769 | stream_putw(s, 0); | |
770 | } else { | |
771 | /* Convert AFI, SAFI to values for packet. */ | |
772 | bgp_map_afi_safi_int2iana(afi, safi, &pkt_afi, &pkt_safi); | |
773 | ||
774 | /* Total Path Attribute Length */ | |
775 | stream_putw(s, 6); | |
776 | stream_putc(s, BGP_ATTR_FLAG_OPTIONAL); | |
777 | stream_putc(s, BGP_ATTR_MP_UNREACH_NLRI); | |
778 | stream_putc(s, 3); | |
779 | stream_putw(s, pkt_afi); | |
780 | stream_putc(s, pkt_safi); | |
6c29258c YO |
781 | } |
782 | ||
ed18356f | 783 | bgp_packet_set_size(s); |
6c29258c | 784 | |
ed18356f DL |
785 | for (ALL_LIST_ELEMENTS_RO(bmp->targets->bgp->peer, node, peer)) { |
786 | if (!peer->afc_nego[afi][safi]) | |
787 | continue; | |
6c29258c | 788 | |
ed18356f | 789 | s2 = stream_new(BGP_MAX_PACKET_SIZE); |
6c29258c | 790 | |
ed18356f DL |
791 | bmp_common_hdr(s2, BMP_VERSION_3, |
792 | BMP_TYPE_ROUTE_MONITORING); | |
793 | bmp_per_peer_hdr(s2, peer, flags, NULL); | |
6c29258c | 794 | |
ed18356f DL |
795 | stream_putl_at(s2, BMP_LENGTH_POS, |
796 | stream_get_endp(s) + stream_get_endp(s2)); | |
6c29258c | 797 | |
ed18356f DL |
798 | bmp->cnt_update++; |
799 | pullwr_write_stream(bmp->pullwr, s2); | |
800 | pullwr_write_stream(bmp->pullwr, s); | |
801 | stream_free(s2); | |
802 | } | |
803 | stream_free(s); | |
6c29258c YO |
804 | } |
805 | ||
87102aa0 | 806 | static struct stream *bmp_update(const struct prefix *p, struct prefix_rd *prd, |
807 | struct peer *peer, struct attr *attr, | |
808 | afi_t afi, safi_t safi) | |
6c29258c | 809 | { |
ed18356f DL |
810 | struct bpacket_attr_vec_arr vecarr; |
811 | struct stream *s; | |
812 | size_t attrlen_pos = 0, mpattrlen_pos = 0; | |
813 | bgp_size_t total_attr_len = 0; | |
814 | ||
815 | bpacket_attr_vec_arr_reset(&vecarr); | |
816 | ||
817 | s = stream_new(BGP_MAX_PACKET_SIZE); | |
818 | bgp_packet_set_marker(s, BGP_MSG_UPDATE); | |
819 | ||
820 | /* 2: withdrawn routes length */ | |
821 | stream_putw(s, 0); | |
822 | ||
823 | /* 3: total attributes length - attrlen_pos stores the position */ | |
824 | attrlen_pos = stream_get_endp(s); | |
825 | stream_putw(s, 0); | |
826 | ||
827 | /* 5: Encode all the attributes, except MP_REACH_NLRI attr. */ | |
828 | total_attr_len = bgp_packet_attribute(NULL, peer, s, attr, | |
829 | &vecarr, NULL, afi, safi, peer, NULL, NULL, 0, 0, 0); | |
6c29258c | 830 | |
ed18356f | 831 | /* space check? */ |
6c29258c | 832 | |
ed18356f DL |
833 | /* peer_cap_enhe & add-path removed */ |
834 | if (afi == AFI_IP && safi == SAFI_UNICAST) | |
835 | stream_put_prefix(s, p); | |
836 | else { | |
837 | size_t p1 = stream_get_endp(s); | |
6c29258c | 838 | |
ed18356f | 839 | /* MPLS removed for now */ |
6c29258c | 840 | |
ed18356f DL |
841 | mpattrlen_pos = bgp_packet_mpattr_start(s, peer, afi, safi, |
842 | &vecarr, attr); | |
87102aa0 | 843 | bgp_packet_mpattr_prefix(s, afi, safi, p, prd, NULL, 0, 0, 0, |
844 | attr); | |
ed18356f DL |
845 | bgp_packet_mpattr_end(s, mpattrlen_pos); |
846 | total_attr_len += stream_get_endp(s) - p1; | |
6c29258c YO |
847 | } |
848 | ||
ed18356f DL |
849 | /* set the total attribute length correctly */ |
850 | stream_putw_at(s, attrlen_pos, total_attr_len); | |
851 | bgp_packet_set_size(s); | |
852 | return s; | |
853 | } | |
6c29258c | 854 | |
87102aa0 | 855 | static struct stream *bmp_withdraw(const struct prefix *p, |
856 | struct prefix_rd *prd, afi_t afi, | |
5f040085 | 857 | safi_t safi) |
ed18356f DL |
858 | { |
859 | struct stream *s; | |
860 | size_t attrlen_pos = 0, mp_start, mplen_pos; | |
861 | bgp_size_t total_attr_len = 0; | |
862 | bgp_size_t unfeasible_len; | |
6c29258c | 863 | |
ed18356f | 864 | s = stream_new(BGP_MAX_PACKET_SIZE); |
6c29258c | 865 | |
ed18356f DL |
866 | bgp_packet_set_marker(s, BGP_MSG_UPDATE); |
867 | stream_putw(s, 0); | |
6c29258c | 868 | |
ed18356f DL |
869 | if (afi == AFI_IP && safi == SAFI_UNICAST) { |
870 | stream_put_prefix(s, p); | |
871 | unfeasible_len = stream_get_endp(s) - BGP_HEADER_SIZE | |
872 | - BGP_UNFEASIBLE_LEN; | |
873 | stream_putw_at(s, BGP_HEADER_SIZE, unfeasible_len); | |
874 | stream_putw(s, 0); | |
875 | } else { | |
876 | attrlen_pos = stream_get_endp(s); | |
877 | /* total attr length = 0 for now. reevaluate later */ | |
878 | stream_putw(s, 0); | |
879 | mp_start = stream_get_endp(s); | |
880 | mplen_pos = bgp_packet_mpunreach_start(s, afi, safi); | |
881 | ||
87102aa0 | 882 | bgp_packet_mpunreach_prefix(s, p, afi, safi, prd, NULL, 0, 0, 0, |
883 | NULL); | |
ed18356f DL |
884 | /* Set the mp_unreach attr's length */ |
885 | bgp_packet_mpunreach_end(s, mplen_pos); | |
886 | ||
887 | /* Set total path attribute length. */ | |
888 | total_attr_len = stream_get_endp(s) - mp_start; | |
889 | stream_putw_at(s, attrlen_pos, total_attr_len); | |
890 | } | |
891 | ||
892 | bgp_packet_set_size(s); | |
893 | return s; | |
894 | } | |
895 | ||
896 | static void bmp_monitor(struct bmp *bmp, struct peer *peer, uint8_t flags, | |
87102aa0 | 897 | const struct prefix *p, struct prefix_rd *prd, |
898 | struct attr *attr, afi_t afi, safi_t safi, | |
899 | time_t uptime) | |
ed18356f DL |
900 | { |
901 | struct stream *hdr, *msg; | |
902 | struct timeval tv = { .tv_sec = uptime, .tv_usec = 0 }; | |
02cee158 | 903 | struct timeval uptime_real; |
ed18356f | 904 | |
02cee158 | 905 | monotime_to_realtime(&tv, &uptime_real); |
ed18356f | 906 | if (attr) |
87102aa0 | 907 | msg = bmp_update(p, prd, peer, attr, afi, safi); |
ed18356f | 908 | else |
87102aa0 | 909 | msg = bmp_withdraw(p, prd, afi, safi); |
ed18356f DL |
910 | |
911 | hdr = stream_new(BGP_MAX_PACKET_SIZE); | |
912 | bmp_common_hdr(hdr, BMP_VERSION_3, BMP_TYPE_ROUTE_MONITORING); | |
02cee158 | 913 | bmp_per_peer_hdr(hdr, peer, flags, &uptime_real); |
ed18356f DL |
914 | |
915 | stream_putl_at(hdr, BMP_LENGTH_POS, | |
916 | stream_get_endp(hdr) + stream_get_endp(msg)); | |
917 | ||
918 | bmp->cnt_update++; | |
919 | pullwr_write_stream(bmp->pullwr, hdr); | |
920 | pullwr_write_stream(bmp->pullwr, msg); | |
921 | stream_free(hdr); | |
922 | stream_free(msg); | |
923 | } | |
924 | ||
925 | static bool bmp_wrsync(struct bmp *bmp, struct pullwr *pullwr) | |
926 | { | |
927 | afi_t afi; | |
928 | safi_t safi; | |
929 | ||
930 | if (bmp->syncafi == AFI_MAX) { | |
931 | FOREACH_AFI_SAFI (afi, safi) { | |
932 | if (bmp->afistate[afi][safi] != BMP_AFI_NEEDSYNC) | |
933 | continue; | |
934 | ||
935 | bmp->afistate[afi][safi] = BMP_AFI_SYNC; | |
936 | ||
937 | bmp->syncafi = afi; | |
938 | bmp->syncsafi = safi; | |
939 | bmp->syncpeerid = 0; | |
940 | memset(&bmp->syncpos, 0, sizeof(bmp->syncpos)); | |
941 | bmp->syncpos.family = afi2family(afi); | |
87102aa0 | 942 | bmp->syncrdpos = NULL; |
ed18356f DL |
943 | zlog_info("bmp[%s] %s %s sending table", |
944 | bmp->remote, | |
945 | afi2str(bmp->syncafi), | |
946 | safi2str(bmp->syncsafi)); | |
947 | /* break does not work here, 2 loops... */ | |
948 | goto afibreak; | |
6c29258c | 949 | } |
ed18356f DL |
950 | if (bmp->syncafi == AFI_MAX) |
951 | return false; | |
952 | } | |
6c29258c | 953 | |
ed18356f DL |
954 | afibreak: |
955 | afi = bmp->syncafi; | |
956 | safi = bmp->syncsafi; | |
957 | ||
958 | if (!bmp->targets->afimon[afi][safi]) { | |
959 | /* shouldn't happen */ | |
960 | bmp->afistate[afi][safi] = BMP_AFI_INACTIVE; | |
961 | bmp->syncafi = AFI_MAX; | |
962 | bmp->syncsafi = SAFI_MAX; | |
963 | return true; | |
964 | } | |
965 | ||
966 | struct bgp_table *table = bmp->targets->bgp->rib[afi][safi]; | |
9bcb3eef | 967 | struct bgp_dest *bn; |
ed18356f DL |
968 | struct bgp_path_info *bpi = NULL, *bpiter; |
969 | struct bgp_adj_in *adjin = NULL, *adjiter; | |
970 | ||
87102aa0 | 971 | if (afi == AFI_L2VPN && safi == SAFI_EVPN) { |
972 | /* initialize syncrdpos to the first | |
973 | * mid-layer table entry | |
974 | */ | |
7b3a3805 | 975 | if (!bmp->syncrdpos) { |
87102aa0 | 976 | bmp->syncrdpos = bgp_table_top(table); |
7b3a3805 DS |
977 | if (!bmp->syncrdpos) |
978 | goto eor; | |
979 | } | |
87102aa0 | 980 | |
981 | /* look for a valid mid-layer table */ | |
982 | do { | |
983 | table = bgp_dest_get_bgp_table_info(bmp->syncrdpos); | |
984 | if (table) { | |
985 | break; | |
986 | } | |
987 | bmp->syncrdpos = bgp_route_next(bmp->syncrdpos); | |
988 | } while (bmp->syncrdpos); | |
989 | ||
990 | /* mid-layer table completed */ | |
991 | if (!bmp->syncrdpos) | |
992 | goto eor; | |
993 | } | |
994 | ||
ed18356f DL |
995 | bn = bgp_node_lookup(table, &bmp->syncpos); |
996 | do { | |
997 | if (!bn) { | |
998 | bn = bgp_table_get_next(table, &bmp->syncpos); | |
999 | if (!bn) { | |
87102aa0 | 1000 | if (afi == AFI_L2VPN && safi == SAFI_EVPN) { |
1001 | /* reset bottom-layer pointer */ | |
1002 | memset(&bmp->syncpos, 0, | |
1003 | sizeof(bmp->syncpos)); | |
1004 | bmp->syncpos.family = afi2family(afi); | |
1005 | /* check whethere there is a valid | |
1006 | * next mid-layer table, otherwise | |
1007 | * declare table completed (eor) | |
1008 | */ | |
1009 | for (bmp->syncrdpos = bgp_route_next( | |
1010 | bmp->syncrdpos); | |
1011 | bmp->syncrdpos; | |
1012 | bmp->syncrdpos = bgp_route_next( | |
1013 | bmp->syncrdpos)) | |
1014 | if (bgp_dest_get_bgp_table_info( | |
1015 | bmp->syncrdpos)) | |
1016 | return true; | |
1017 | } | |
1018 | eor: | |
ed18356f DL |
1019 | zlog_info("bmp[%s] %s %s table completed (EoR)", |
1020 | bmp->remote, afi2str(afi), | |
1021 | safi2str(safi)); | |
1022 | bmp_eor(bmp, afi, safi, BMP_PEER_FLAG_L); | |
1023 | bmp_eor(bmp, afi, safi, 0); | |
1024 | ||
1025 | bmp->afistate[afi][safi] = BMP_AFI_LIVE; | |
1026 | bmp->syncafi = AFI_MAX; | |
1027 | bmp->syncsafi = SAFI_MAX; | |
1028 | return true; | |
1029 | } | |
1030 | bmp->syncpeerid = 0; | |
9bcb3eef | 1031 | prefix_copy(&bmp->syncpos, bgp_dest_get_prefix(bn)); |
6c29258c YO |
1032 | } |
1033 | ||
ed18356f | 1034 | if (bmp->targets->afimon[afi][safi] & BMP_MON_POSTPOLICY) { |
87102aa0 | 1035 | for (bpiter = bgp_dest_get_bgp_path_info(bn); bpiter; |
1036 | bpiter = bpiter->next) { | |
ed18356f DL |
1037 | if (!CHECK_FLAG(bpiter->flags, BGP_PATH_VALID)) |
1038 | continue; | |
1039 | if (bpiter->peer->qobj_node.nid | |
1040 | <= bmp->syncpeerid) | |
1041 | continue; | |
1042 | if (bpi && bpiter->peer->qobj_node.nid | |
1043 | > bpi->peer->qobj_node.nid) | |
1044 | continue; | |
1045 | bpi = bpiter; | |
1046 | } | |
1047 | } | |
1048 | if (bmp->targets->afimon[afi][safi] & BMP_MON_PREPOLICY) { | |
1049 | for (adjiter = bn->adj_in; adjiter; | |
1050 | adjiter = adjiter->next) { | |
1051 | if (adjiter->peer->qobj_node.nid | |
1052 | <= bmp->syncpeerid) | |
1053 | continue; | |
1054 | if (adjin && adjiter->peer->qobj_node.nid | |
1055 | > adjin->peer->qobj_node.nid) | |
1056 | continue; | |
1057 | adjin = adjiter; | |
1058 | } | |
1059 | } | |
1060 | if (bpi || adjin) | |
1061 | break; | |
1062 | ||
1063 | bn = NULL; | |
1064 | } while (1); | |
1065 | ||
1066 | if (adjin && bpi | |
1067 | && adjin->peer->qobj_node.nid < bpi->peer->qobj_node.nid) { | |
1068 | bpi = NULL; | |
1069 | bmp->syncpeerid = adjin->peer->qobj_node.nid; | |
1070 | } else if (adjin && bpi | |
1071 | && adjin->peer->qobj_node.nid > bpi->peer->qobj_node.nid) { | |
1072 | adjin = NULL; | |
1073 | bmp->syncpeerid = bpi->peer->qobj_node.nid; | |
1074 | } else if (bpi) { | |
1075 | bmp->syncpeerid = bpi->peer->qobj_node.nid; | |
1076 | } else if (adjin) { | |
1077 | bmp->syncpeerid = adjin->peer->qobj_node.nid; | |
1078 | } | |
6c29258c | 1079 | |
9bcb3eef | 1080 | const struct prefix *bn_p = bgp_dest_get_prefix(bn); |
87102aa0 | 1081 | struct prefix_rd *prd = NULL; |
1082 | if (afi == AFI_L2VPN && safi == SAFI_EVPN) | |
1083 | prd = (struct prefix_rd *)bgp_dest_get_prefix(bmp->syncrdpos); | |
b54892e0 | 1084 | |
ed18356f | 1085 | if (bpi) |
87102aa0 | 1086 | bmp_monitor(bmp, bpi->peer, BMP_PEER_FLAG_L, bn_p, prd, |
1087 | bpi->attr, afi, safi, bpi->uptime); | |
ed18356f | 1088 | if (adjin) |
87102aa0 | 1089 | bmp_monitor(bmp, adjin->peer, 0, bn_p, prd, adjin->attr, afi, |
1090 | safi, adjin->uptime); | |
6c29258c | 1091 | |
ed18356f | 1092 | return true; |
6c29258c YO |
1093 | } |
1094 | ||
ed18356f | 1095 | static struct bmp_queue_entry *bmp_pull(struct bmp *bmp) |
6c29258c | 1096 | { |
ed18356f DL |
1097 | struct bmp_queue_entry *bqe; |
1098 | ||
1099 | bqe = bmp->queuepos; | |
1100 | if (!bqe) | |
1101 | return NULL; | |
1102 | ||
1103 | bmp->queuepos = bmp_qlist_next(&bmp->targets->updlist, bqe); | |
1104 | ||
1105 | bqe->refcount--; | |
1106 | if (!bqe->refcount) { | |
1107 | bmp_qhash_del(&bmp->targets->updhash, bqe); | |
1108 | bmp_qlist_del(&bmp->targets->updlist, bqe); | |
1109 | } | |
1110 | return bqe; | |
1111 | } | |
1112 | ||
1113 | static bool bmp_wrqueue(struct bmp *bmp, struct pullwr *pullwr) | |
1114 | { | |
1115 | struct bmp_queue_entry *bqe; | |
1116 | struct peer *peer; | |
9bcb3eef | 1117 | struct bgp_dest *bn; |
ed18356f DL |
1118 | bool written = false; |
1119 | ||
1120 | bqe = bmp_pull(bmp); | |
1121 | if (!bqe) | |
1122 | return false; | |
1123 | ||
1124 | afi_t afi = bqe->afi; | |
1125 | safi_t safi = bqe->safi; | |
1126 | ||
1127 | switch (bmp->afistate[afi][safi]) { | |
1128 | case BMP_AFI_INACTIVE: | |
1129 | case BMP_AFI_NEEDSYNC: | |
1130 | goto out; | |
1131 | case BMP_AFI_SYNC: | |
1132 | if (prefix_cmp(&bqe->p, &bmp->syncpos) <= 0) | |
1133 | /* currently syncing but have already passed this | |
1134 | * prefix => send it. */ | |
1135 | break; | |
1136 | ||
1137 | /* currently syncing & haven't reached this prefix yet | |
1138 | * => it'll be sent as part of the table sync, no need here */ | |
1139 | goto out; | |
1140 | case BMP_AFI_LIVE: | |
1141 | break; | |
1142 | } | |
1143 | ||
1144 | peer = QOBJ_GET_TYPESAFE(bqe->peerid, peer); | |
1145 | if (!peer) { | |
1146 | zlog_info("bmp: skipping queued item for deleted peer"); | |
1147 | goto out; | |
1148 | } | |
feb17238 | 1149 | if (!peer_established(peer)) |
ed18356f DL |
1150 | goto out; |
1151 | ||
1152 | bn = bgp_node_lookup(bmp->targets->bgp->rib[afi][safi], &bqe->p); | |
87102aa0 | 1153 | struct prefix_rd *prd = NULL; |
1154 | if (bqe->afi == AFI_L2VPN && bqe->safi == SAFI_EVPN) | |
1155 | prd = &bqe->rd; | |
ed18356f DL |
1156 | |
1157 | if (bmp->targets->afimon[afi][safi] & BMP_MON_POSTPOLICY) { | |
1158 | struct bgp_path_info *bpi; | |
1159 | ||
87102aa0 | 1160 | for (bpi = bn ? bgp_dest_get_bgp_path_info(bn) : NULL; bpi; |
1161 | bpi = bpi->next) { | |
ed18356f DL |
1162 | if (!CHECK_FLAG(bpi->flags, BGP_PATH_VALID)) |
1163 | continue; | |
1164 | if (bpi->peer == peer) | |
1165 | break; | |
1166 | } | |
1167 | ||
87102aa0 | 1168 | bmp_monitor(bmp, peer, BMP_PEER_FLAG_L, &bqe->p, prd, |
ed18356f DL |
1169 | bpi ? bpi->attr : NULL, afi, safi, |
1170 | bpi ? bpi->uptime : monotime(NULL)); | |
1171 | written = true; | |
1172 | } | |
1173 | ||
1174 | if (bmp->targets->afimon[afi][safi] & BMP_MON_PREPOLICY) { | |
1175 | struct bgp_adj_in *adjin; | |
1176 | ||
1177 | for (adjin = bn ? bn->adj_in : NULL; adjin; | |
1178 | adjin = adjin->next) { | |
1179 | if (adjin->peer == peer) | |
1180 | break; | |
1181 | } | |
87102aa0 | 1182 | bmp_monitor(bmp, peer, BMP_PEER_FLAG_L, &bqe->p, prd, |
ed18356f DL |
1183 | adjin ? adjin->attr : NULL, afi, safi, |
1184 | adjin ? adjin->uptime : monotime(NULL)); | |
1185 | written = true; | |
1186 | } | |
1187 | ||
1188 | out: | |
1189 | if (!bqe->refcount) | |
1190 | XFREE(MTYPE_BMP_QUEUE, bqe); | |
1191 | return written; | |
1192 | } | |
1193 | ||
1194 | static void bmp_wrfill(struct bmp *bmp, struct pullwr *pullwr) | |
1195 | { | |
1196 | switch(bmp->state) { | |
1197 | case BMP_PeerUp: | |
1198 | bmp_send_peerup(bmp); | |
1199 | bmp->state = BMP_Run; | |
1200 | break; | |
1201 | ||
1202 | case BMP_Run: | |
1203 | if (bmp_wrmirror(bmp, pullwr)) | |
1204 | break; | |
1205 | if (bmp_wrqueue(bmp, pullwr)) | |
1206 | break; | |
1207 | if (bmp_wrsync(bmp, pullwr)) | |
1208 | break; | |
1209 | break; | |
1210 | } | |
1211 | } | |
1212 | ||
1213 | static void bmp_wrerr(struct bmp *bmp, struct pullwr *pullwr, bool eof) | |
1214 | { | |
1215 | if (eof) | |
1216 | zlog_info("bmp[%s] disconnected", bmp->remote); | |
1217 | else | |
1218 | flog_warn(EC_LIB_SYSTEM_CALL, "bmp[%s] connection error: %s", | |
1219 | bmp->remote, strerror(errno)); | |
1220 | ||
1221 | bmp_close(bmp); | |
1222 | bmp_free(bmp); | |
1223 | } | |
1224 | ||
9bcb3eef DS |
1225 | static void bmp_process_one(struct bmp_targets *bt, struct bgp *bgp, afi_t afi, |
1226 | safi_t safi, struct bgp_dest *bn, struct peer *peer) | |
ed18356f DL |
1227 | { |
1228 | struct bmp *bmp; | |
1229 | struct bmp_queue_entry *bqe, bqeref; | |
1230 | size_t refcount; | |
ed18356f DL |
1231 | |
1232 | refcount = bmp_session_count(&bt->sessions); | |
1233 | if (refcount == 0) | |
1234 | return; | |
1235 | ||
1236 | memset(&bqeref, 0, sizeof(bqeref)); | |
9bcb3eef | 1237 | prefix_copy(&bqeref.p, bgp_dest_get_prefix(bn)); |
ed18356f DL |
1238 | bqeref.peerid = peer->qobj_node.nid; |
1239 | bqeref.afi = afi; | |
1240 | bqeref.safi = safi; | |
1241 | ||
87102aa0 | 1242 | if (afi == AFI_L2VPN && safi == SAFI_EVPN && bn->pdest) |
1243 | prefix_copy(&bqeref.rd, | |
1244 | (struct prefix_rd *)bgp_dest_get_prefix(bn->pdest)); | |
1245 | ||
ed18356f DL |
1246 | bqe = bmp_qhash_find(&bt->updhash, &bqeref); |
1247 | if (bqe) { | |
1248 | if (bqe->refcount >= refcount) | |
1249 | /* nothing to do here */ | |
1250 | return; | |
1251 | ||
1252 | bmp_qlist_del(&bt->updlist, bqe); | |
1253 | } else { | |
1254 | bqe = XMALLOC(MTYPE_BMP_QUEUE, sizeof(*bqe)); | |
1255 | memcpy(bqe, &bqeref, sizeof(*bqe)); | |
1256 | ||
1257 | bmp_qhash_add(&bt->updhash, bqe); | |
1258 | } | |
1259 | ||
1260 | bqe->refcount = refcount; | |
1261 | bmp_qlist_add_tail(&bt->updlist, bqe); | |
1262 | ||
1263 | frr_each (bmp_session, &bt->sessions, bmp) | |
1264 | if (!bmp->queuepos) | |
1265 | bmp->queuepos = bqe; | |
1266 | } | |
1267 | ||
1268 | static int bmp_process(struct bgp *bgp, afi_t afi, safi_t safi, | |
9bcb3eef | 1269 | struct bgp_dest *bn, struct peer *peer, bool withdraw) |
ed18356f DL |
1270 | { |
1271 | struct bmp_bgp *bmpbgp = bmp_bgp_find(peer->bgp); | |
1272 | struct bmp_targets *bt; | |
1273 | struct bmp *bmp; | |
1274 | ||
e0302d7e QY |
1275 | if (frrtrace_enabled(frr_bgp, bmp_process)) { |
1276 | char pfxprint[PREFIX2STR_BUFFER]; | |
1277 | ||
1278 | prefix2str(&bn->p, pfxprint, sizeof(pfxprint)); | |
1279 | frrtrace(5, frr_bgp, bmp_process, peer, pfxprint, afi, safi, | |
1280 | withdraw); | |
1281 | } | |
1282 | ||
ed18356f DL |
1283 | if (!bmpbgp) |
1284 | return 0; | |
1285 | ||
1286 | frr_each(bmp_targets, &bmpbgp->targets, bt) { | |
1287 | if (!bt->afimon[afi][safi]) | |
1288 | continue; | |
1289 | ||
1290 | bmp_process_one(bt, bgp, afi, safi, bn, peer); | |
1291 | ||
1292 | frr_each(bmp_session, &bt->sessions, bmp) { | |
1293 | pullwr_bump(bmp->pullwr); | |
1294 | } | |
1295 | } | |
1296 | return 0; | |
1297 | } | |
1298 | ||
1299 | static void bmp_stat_put_u32(struct stream *s, size_t *cnt, uint16_t type, | |
1300 | uint32_t value) | |
1301 | { | |
1302 | stream_putw(s, type); | |
1303 | stream_putw(s, 4); | |
1304 | stream_putl(s, value); | |
1305 | (*cnt)++; | |
1306 | } | |
1307 | ||
1308 | static int bmp_stats(struct thread *thread) | |
1309 | { | |
1310 | struct bmp_targets *bt = THREAD_ARG(thread); | |
1311 | struct stream *s; | |
1312 | struct peer *peer; | |
1313 | struct listnode *node; | |
1314 | struct timeval tv; | |
1315 | ||
1316 | if (bt->stat_msec) | |
1317 | thread_add_timer_msec(bm->master, bmp_stats, bt, bt->stat_msec, | |
1318 | &bt->t_stats); | |
1319 | ||
1320 | gettimeofday(&tv, NULL); | |
1321 | ||
1322 | /* Walk down all peers */ | |
1323 | for (ALL_LIST_ELEMENTS_RO(bt->bgp->peer, node, peer)) { | |
1324 | size_t count = 0, count_pos, len; | |
1325 | ||
feb17238 | 1326 | if (!peer_established(peer)) |
ed18356f DL |
1327 | continue; |
1328 | ||
1329 | s = stream_new(BGP_MAX_PACKET_SIZE); | |
1330 | bmp_common_hdr(s, BMP_VERSION_3, BMP_TYPE_STATISTICS_REPORT); | |
1331 | bmp_per_peer_hdr(s, peer, 0, &tv); | |
1332 | ||
1333 | count_pos = stream_get_endp(s); | |
1334 | stream_putl(s, 0); | |
1335 | ||
1336 | bmp_stat_put_u32(s, &count, BMP_STATS_PFX_REJECTED, | |
1337 | peer->stat_pfx_filter); | |
1338 | bmp_stat_put_u32(s, &count, BMP_STATS_UPD_LOOP_ASPATH, | |
1339 | peer->stat_pfx_aspath_loop); | |
1340 | bmp_stat_put_u32(s, &count, BMP_STATS_UPD_LOOP_ORIGINATOR, | |
1341 | peer->stat_pfx_originator_loop); | |
1342 | bmp_stat_put_u32(s, &count, BMP_STATS_UPD_LOOP_CLUSTER, | |
1343 | peer->stat_pfx_cluster_loop); | |
1344 | bmp_stat_put_u32(s, &count, BMP_STATS_PFX_DUP_WITHDRAW, | |
1345 | peer->stat_pfx_dup_withdraw); | |
1346 | bmp_stat_put_u32(s, &count, BMP_STATS_UPD_7606_WITHDRAW, | |
1347 | peer->stat_upd_7606); | |
1348 | bmp_stat_put_u32(s, &count, BMP_STATS_FRR_NH_INVALID, | |
1349 | peer->stat_pfx_nh_invalid); | |
1350 | ||
1351 | stream_putl_at(s, count_pos, count); | |
1352 | ||
1353 | len = stream_get_endp(s); | |
1354 | stream_putl_at(s, BMP_LENGTH_POS, len); | |
1355 | ||
1356 | bmp_send_all(bt->bmpbgp, s); | |
1357 | } | |
1358 | return 0; | |
1359 | } | |
1360 | ||
8252b477 AL |
1361 | /* read from the BMP socket to detect session termination */ |
1362 | static int bmp_read(struct thread *t) | |
1363 | { | |
1364 | struct bmp *bmp = THREAD_ARG(t); | |
1365 | char buf[1024]; | |
1366 | ssize_t n; | |
1367 | ||
1368 | bmp->t_read = NULL; | |
1369 | ||
1370 | n = read(bmp->socket, buf, sizeof(buf)); | |
1371 | if (n >= 1) { | |
1372 | zlog_info("bmp[%s]: unexpectedly received %zu bytes", bmp->remote, n); | |
1373 | } else if (n == 0) { | |
1374 | /* the TCP session was terminated by the far end */ | |
1375 | bmp_wrerr(bmp, NULL, true); | |
1376 | return 0; | |
1377 | } else if (!(errno == EAGAIN || errno == EWOULDBLOCK || errno == EINTR)) { | |
1378 | /* the TCP session experienced a fatal error, likely a timeout */ | |
1379 | bmp_wrerr(bmp, NULL, false); | |
1380 | return -1; | |
1381 | } | |
1382 | ||
1383 | thread_add_read(bm->master, bmp_read, bmp, bmp->socket, &bmp->t_read); | |
1384 | ||
1385 | return 0; | |
1386 | } | |
1387 | ||
ed18356f DL |
1388 | static struct bmp *bmp_open(struct bmp_targets *bt, int bmp_sock) |
1389 | { | |
1390 | union sockunion su, *sumem; | |
1391 | struct prefix p; | |
1392 | int on = 1; | |
1393 | struct access_list *acl = NULL; | |
1394 | enum filter_type ret; | |
1395 | char buf[SU_ADDRSTRLEN]; | |
1396 | struct bmp *bmp; | |
1397 | ||
1398 | sumem = sockunion_getpeername(bmp_sock); | |
1399 | if (!sumem) { | |
1400 | close(bmp_sock); | |
1401 | return NULL; | |
1402 | } | |
1403 | memcpy(&su, sumem, sizeof(su)); | |
1404 | sockunion_free(sumem); | |
1405 | ||
1406 | set_nonblocking(bmp_sock); | |
1407 | set_cloexec(bmp_sock); | |
ed18356f | 1408 | |
0154d8ce DS |
1409 | if (!sockunion2hostprefix(&su, &p)) { |
1410 | close(bmp_sock); | |
1411 | return NULL; | |
1412 | } | |
ed18356f DL |
1413 | |
1414 | acl = NULL; | |
1415 | switch (p.family) { | |
1416 | case AF_INET: | |
1417 | acl = access_list_lookup(AFI_IP, bt->acl_name); | |
1418 | break; | |
1419 | case AF_INET6: | |
1420 | acl = access_list_lookup(AFI_IP6, bt->acl6_name); | |
1421 | break; | |
1422 | default: | |
1423 | break; | |
1424 | } | |
1425 | ||
1426 | ret = FILTER_PERMIT; | |
1427 | if (acl) { | |
1428 | ret = access_list_apply(acl, &p); | |
1429 | } | |
1430 | ||
1431 | sockunion2str(&su, buf, SU_ADDRSTRLEN); | |
1432 | snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), ":%u", | |
1433 | su.sa.sa_family == AF_INET | |
1434 | ? ntohs(su.sin.sin_port) | |
1435 | : ntohs(su.sin6.sin6_port)); | |
1436 | ||
1437 | if (ret == FILTER_DENY) { | |
1438 | bt->cnt_aclrefused++; | |
1439 | zlog_info("bmp[%s] connection refused by access-list", buf); | |
1440 | close(bmp_sock); | |
1441 | return NULL; | |
1442 | } | |
1443 | bt->cnt_accept++; | |
1444 | ||
d38c6bb1 DS |
1445 | if (setsockopt(bmp_sock, SOL_SOCKET, SO_KEEPALIVE, &on, sizeof(on)) < 0) |
1446 | flog_err(EC_LIB_SOCKET, "bmp: %d can't setsockopt SO_KEEPALIVE: %s(%d)", | |
1447 | bmp_sock, safe_strerror(errno), errno); | |
1448 | if (setsockopt(bmp_sock, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on)) < 0) | |
1449 | flog_err(EC_LIB_SOCKET, "bmp: %d can't setsockopt TCP_NODELAY: %s(%d)", | |
1450 | bmp_sock, safe_strerror(errno), errno); | |
ed18356f DL |
1451 | |
1452 | zlog_info("bmp[%s] connection established", buf); | |
1453 | ||
1454 | /* Allocate new BMP structure and set up default values. */ | |
1455 | bmp = bmp_new(bt, bmp_sock); | |
1456 | strlcpy(bmp->remote, buf, sizeof(bmp->remote)); | |
1457 | ||
1458 | bmp->state = BMP_PeerUp; | |
1459 | bmp->pullwr = pullwr_new(bm->master, bmp_sock, bmp, bmp_wrfill, | |
1460 | bmp_wrerr); | |
8252b477 | 1461 | thread_add_read(bm->master, bmp_read, bmp, bmp_sock, &bmp->t_read); |
ed18356f DL |
1462 | bmp_send_initiation(bmp); |
1463 | ||
1464 | return bmp; | |
1465 | } | |
1466 | ||
1467 | /* Accept BMP connection. */ | |
1468 | static int bmp_accept(struct thread *thread) | |
1469 | { | |
1470 | union sockunion su; | |
1471 | struct bmp_listener *bl = THREAD_ARG(thread); | |
1472 | int bmp_sock; | |
1473 | ||
1474 | /* We continue hearing BMP socket. */ | |
1475 | thread_add_read(bm->master, bmp_accept, bl, bl->sock, &bl->t_accept); | |
1476 | ||
1477 | memset(&su, 0, sizeof(union sockunion)); | |
1478 | ||
1479 | /* We can handle IPv4 or IPv6 socket. */ | |
1480 | bmp_sock = sockunion_accept(bl->sock, &su); | |
1481 | if (bmp_sock < 0) { | |
63efca0e | 1482 | zlog_info("bmp: accept_sock failed: %s", safe_strerror(errno)); |
ed18356f DL |
1483 | return -1; |
1484 | } | |
1485 | bmp_open(bl->targets, bmp_sock); | |
1486 | return 0; | |
1487 | } | |
1488 | ||
1489 | static void bmp_close(struct bmp *bmp) | |
1490 | { | |
1491 | struct bmp_queue_entry *bqe; | |
1492 | struct bmp_mirrorq *bmq; | |
1493 | ||
8252b477 AL |
1494 | THREAD_OFF(bmp->t_read); |
1495 | ||
ed18356f DL |
1496 | if (bmp->active) |
1497 | bmp_active_disconnected(bmp->active); | |
1498 | ||
1499 | while ((bmq = bmp_pull_mirror(bmp))) | |
1500 | if (!bmq->refcount) | |
1501 | XFREE(MTYPE_BMP_MIRRORQ, bmq); | |
1502 | while ((bqe = bmp_pull(bmp))) | |
1503 | if (!bqe->refcount) | |
1504 | XFREE(MTYPE_BMP_QUEUE, bqe); | |
1505 | ||
1506 | THREAD_OFF(bmp->t_read); | |
1507 | pullwr_del(bmp->pullwr); | |
1508 | close(bmp->socket); | |
1509 | } | |
1510 | ||
1511 | static struct bmp_bgp *bmp_bgp_find(struct bgp *bgp) | |
1512 | { | |
1513 | struct bmp_bgp dummy = { .bgp = bgp }; | |
1514 | return bmp_bgph_find(&bmp_bgph, &dummy); | |
1515 | } | |
1516 | ||
1517 | static struct bmp_bgp *bmp_bgp_get(struct bgp *bgp) | |
1518 | { | |
1519 | struct bmp_bgp *bmpbgp; | |
1520 | ||
1521 | bmpbgp = bmp_bgp_find(bgp); | |
1522 | if (bmpbgp) | |
1523 | return bmpbgp; | |
1524 | ||
1525 | bmpbgp = XCALLOC(MTYPE_BMP, sizeof(*bmpbgp)); | |
1526 | bmpbgp->bgp = bgp; | |
1527 | bmpbgp->mirror_qsizelimit = ~0UL; | |
1528 | bmp_mirrorq_init(&bmpbgp->mirrorq); | |
1529 | bmp_bgph_add(&bmp_bgph, bmpbgp); | |
1530 | ||
1531 | return bmpbgp; | |
1532 | } | |
1533 | ||
1534 | static void bmp_bgp_put(struct bmp_bgp *bmpbgp) | |
1535 | { | |
1536 | struct bmp_targets *bt; | |
1537 | ||
1538 | bmp_bgph_del(&bmp_bgph, bmpbgp); | |
1539 | ||
1540 | frr_each_safe(bmp_targets, &bmpbgp->targets, bt) | |
1541 | bmp_targets_put(bt); | |
1542 | ||
1543 | bmp_mirrorq_fini(&bmpbgp->mirrorq); | |
1544 | XFREE(MTYPE_BMP, bmpbgp); | |
1545 | } | |
1546 | ||
1547 | static int bmp_bgp_del(struct bgp *bgp) | |
1548 | { | |
1549 | struct bmp_bgp *bmpbgp = bmp_bgp_find(bgp); | |
1550 | ||
1551 | if (bmpbgp) | |
1552 | bmp_bgp_put(bmpbgp); | |
1553 | return 0; | |
1554 | } | |
1555 | ||
1556 | static struct bmp_bgp_peer *bmp_bgp_peer_find(uint64_t peerid) | |
1557 | { | |
1558 | struct bmp_bgp_peer dummy = { .peerid = peerid }; | |
1559 | return bmp_peerh_find(&bmp_peerh, &dummy); | |
1560 | } | |
1561 | ||
1562 | static struct bmp_bgp_peer *bmp_bgp_peer_get(struct peer *peer) | |
1563 | { | |
1564 | struct bmp_bgp_peer *bbpeer; | |
1565 | ||
1566 | bbpeer = bmp_bgp_peer_find(peer->qobj_node.nid); | |
1567 | if (bbpeer) | |
1568 | return bbpeer; | |
1569 | ||
1570 | bbpeer = XCALLOC(MTYPE_BMP_PEER, sizeof(*bbpeer)); | |
1571 | bbpeer->peerid = peer->qobj_node.nid; | |
1572 | bmp_peerh_add(&bmp_peerh, bbpeer); | |
1573 | ||
1574 | return bbpeer; | |
1575 | } | |
1576 | ||
1577 | static struct bmp_targets *bmp_targets_find1(struct bgp *bgp, const char *name) | |
1578 | { | |
1579 | struct bmp_bgp *bmpbgp = bmp_bgp_find(bgp); | |
1580 | struct bmp_targets dummy; | |
1581 | ||
1582 | if (!bmpbgp) | |
1583 | return NULL; | |
1584 | dummy.name = (char *)name; | |
1585 | return bmp_targets_find(&bmpbgp->targets, &dummy); | |
1586 | } | |
1587 | ||
1588 | static struct bmp_targets *bmp_targets_get(struct bgp *bgp, const char *name) | |
1589 | { | |
1590 | struct bmp_targets *bt; | |
1591 | ||
1592 | bt = bmp_targets_find1(bgp, name); | |
1593 | if (bt) | |
1594 | return bt; | |
1595 | ||
1596 | bt = XCALLOC(MTYPE_BMP_TARGETS, sizeof(*bt)); | |
1597 | bt->name = XSTRDUP(MTYPE_BMP_TARGETSNAME, name); | |
1598 | bt->bgp = bgp; | |
1599 | bt->bmpbgp = bmp_bgp_get(bgp); | |
1600 | bmp_session_init(&bt->sessions); | |
1601 | bmp_qhash_init(&bt->updhash); | |
1602 | bmp_qlist_init(&bt->updlist); | |
1603 | bmp_actives_init(&bt->actives); | |
1604 | bmp_listeners_init(&bt->listeners); | |
1605 | ||
1606 | QOBJ_REG(bt, bmp_targets); | |
1607 | bmp_targets_add(&bt->bmpbgp->targets, bt); | |
1608 | return bt; | |
1609 | } | |
1610 | ||
1611 | static void bmp_targets_put(struct bmp_targets *bt) | |
1612 | { | |
1613 | struct bmp *bmp; | |
1614 | struct bmp_active *ba; | |
1615 | ||
1616 | frr_each_safe (bmp_actives, &bt->actives, ba) | |
1617 | bmp_active_put(ba); | |
1618 | ||
1619 | frr_each_safe(bmp_session, &bt->sessions, bmp) { | |
1620 | bmp_close(bmp); | |
1621 | bmp_free(bmp); | |
1622 | } | |
1623 | ||
1624 | bmp_targets_del(&bt->bmpbgp->targets, bt); | |
1625 | QOBJ_UNREG(bt); | |
1626 | ||
1627 | bmp_listeners_fini(&bt->listeners); | |
1628 | bmp_actives_fini(&bt->actives); | |
1629 | bmp_qhash_fini(&bt->updhash); | |
1630 | bmp_qlist_fini(&bt->updlist); | |
1631 | ||
1632 | XFREE(MTYPE_BMP_ACLNAME, bt->acl_name); | |
1633 | XFREE(MTYPE_BMP_ACLNAME, bt->acl6_name); | |
1634 | bmp_session_fini(&bt->sessions); | |
1635 | ||
1636 | XFREE(MTYPE_BMP_TARGETSNAME, bt->name); | |
1637 | XFREE(MTYPE_BMP_TARGETS, bt); | |
1638 | } | |
1639 | ||
1640 | static struct bmp_listener *bmp_listener_find(struct bmp_targets *bt, | |
1641 | const union sockunion *su, | |
1642 | int port) | |
1643 | { | |
1644 | struct bmp_listener dummy; | |
1645 | dummy.addr = *su; | |
1646 | dummy.port = port; | |
1647 | return bmp_listeners_find(&bt->listeners, &dummy); | |
1648 | } | |
1649 | ||
1650 | static struct bmp_listener *bmp_listener_get(struct bmp_targets *bt, | |
1651 | const union sockunion *su, | |
1652 | int port) | |
1653 | { | |
1654 | struct bmp_listener *bl = bmp_listener_find(bt, su, port); | |
1655 | ||
1656 | if (bl) | |
1657 | return bl; | |
1658 | ||
1659 | bl = XCALLOC(MTYPE_BMP_LISTENER, sizeof(*bl)); | |
1660 | bl->targets = bt; | |
1661 | bl->addr = *su; | |
1662 | bl->port = port; | |
1663 | bl->sock = -1; | |
1664 | ||
1665 | bmp_listeners_add(&bt->listeners, bl); | |
1666 | return bl; | |
1667 | } | |
1668 | ||
1669 | static void bmp_listener_put(struct bmp_listener *bl) | |
1670 | { | |
1671 | bmp_listeners_del(&bl->targets->listeners, bl); | |
1672 | XFREE(MTYPE_BMP_LISTENER, bl); | |
1673 | } | |
1674 | ||
1675 | static void bmp_listener_start(struct bmp_listener *bl) | |
1676 | { | |
1677 | int sock, ret; | |
1678 | ||
1679 | sock = socket(bl->addr.sa.sa_family, SOCK_STREAM, 0); | |
1680 | if (sock < 0) | |
1681 | return; | |
1682 | ||
1683 | sockopt_reuseaddr(sock); | |
1684 | sockopt_reuseport(sock); | |
1685 | sockopt_v6only(bl->addr.sa.sa_family, sock); | |
1686 | set_cloexec(sock); | |
1687 | ||
1688 | ret = sockunion_bind(sock, &bl->addr, bl->port, &bl->addr); | |
1689 | if (ret < 0) | |
1690 | goto out_sock; | |
1691 | ||
1692 | ret = listen(sock, 3); | |
1693 | if (ret < 0) | |
1694 | goto out_sock; | |
1695 | ||
1696 | bl->sock = sock; | |
1697 | thread_add_read(bm->master, bmp_accept, bl, sock, &bl->t_accept); | |
1698 | return; | |
1699 | out_sock: | |
1700 | close(sock); | |
1701 | } | |
1702 | ||
1703 | static void bmp_listener_stop(struct bmp_listener *bl) | |
1704 | { | |
1705 | THREAD_OFF(bl->t_accept); | |
1706 | ||
1707 | if (bl->sock != -1) | |
1708 | close(bl->sock); | |
1709 | bl->sock = -1; | |
1710 | } | |
1711 | ||
1712 | static struct bmp_active *bmp_active_find(struct bmp_targets *bt, | |
1713 | const char *hostname, int port) | |
1714 | { | |
1715 | struct bmp_active dummy; | |
1716 | dummy.hostname = (char *)hostname; | |
1717 | dummy.port = port; | |
1718 | return bmp_actives_find(&bt->actives, &dummy); | |
1719 | } | |
1720 | ||
1721 | static struct bmp_active *bmp_active_get(struct bmp_targets *bt, | |
1722 | const char *hostname, int port) | |
1723 | { | |
1724 | struct bmp_active *ba; | |
1725 | ||
1726 | ba = bmp_active_find(bt, hostname, port); | |
1727 | if (ba) | |
1728 | return ba; | |
1729 | ||
1730 | ba = XCALLOC(MTYPE_BMP_ACTIVE, sizeof(*ba)); | |
1731 | ba->targets = bt; | |
1732 | ba->hostname = XSTRDUP(MTYPE_TMP, hostname); | |
1733 | ba->port = port; | |
1734 | ba->minretry = BMP_DFLT_MINRETRY; | |
1735 | ba->maxretry = BMP_DFLT_MAXRETRY; | |
1736 | ba->socket = -1; | |
1737 | ||
1738 | bmp_actives_add(&bt->actives, ba); | |
1739 | return ba; | |
1740 | } | |
1741 | ||
1742 | static void bmp_active_put(struct bmp_active *ba) | |
1743 | { | |
1744 | THREAD_OFF(ba->t_timer); | |
1745 | THREAD_OFF(ba->t_read); | |
1746 | THREAD_OFF(ba->t_write); | |
1747 | ||
1748 | bmp_actives_del(&ba->targets->actives, ba); | |
1749 | ||
1750 | if (ba->bmp) { | |
1751 | ba->bmp->active = NULL; | |
1752 | bmp_close(ba->bmp); | |
1753 | bmp_free(ba->bmp); | |
1754 | } | |
1755 | if (ba->socket != -1) | |
1756 | close(ba->socket); | |
1757 | ||
1758 | XFREE(MTYPE_TMP, ba->hostname); | |
1759 | XFREE(MTYPE_BMP_ACTIVE, ba); | |
1760 | } | |
1761 | ||
1762 | static void bmp_active_setup(struct bmp_active *ba); | |
1763 | ||
1764 | static void bmp_active_connect(struct bmp_active *ba) | |
1765 | { | |
1766 | enum connect_result res; | |
1767 | char buf[SU_ADDRSTRLEN]; | |
1768 | ||
1769 | for (; ba->addrpos < ba->addrtotal; ba->addrpos++) { | |
1770 | ba->socket = sockunion_socket(&ba->addrs[ba->addrpos]); | |
1771 | if (ba->socket < 0) { | |
1772 | zlog_warn("bmp[%s]: failed to create socket", | |
1773 | ba->hostname); | |
1774 | continue; | |
1775 | } | |
c258527b | 1776 | |
ed18356f DL |
1777 | set_nonblocking(ba->socket); |
1778 | res = sockunion_connect(ba->socket, &ba->addrs[ba->addrpos], | |
1779 | htons(ba->port), 0); | |
1780 | switch (res) { | |
1781 | case connect_error: | |
1782 | sockunion2str(&ba->addrs[ba->addrpos], buf, | |
1783 | sizeof(buf)); | |
1784 | zlog_warn("bmp[%s]: failed to connect to %s:%d", | |
1785 | ba->hostname, buf, ba->port); | |
1786 | close(ba->socket); | |
1787 | ba->socket = -1; | |
1788 | continue; | |
1789 | case connect_success: | |
1790 | break; | |
1791 | case connect_in_progress: | |
1792 | bmp_active_setup(ba); | |
1793 | return; | |
1794 | } | |
1795 | } | |
1796 | ||
1797 | /* exhausted all addresses */ | |
1798 | ba->curretry += ba->curretry / 2; | |
1799 | bmp_active_setup(ba); | |
1800 | } | |
1801 | ||
3286ca07 DL |
1802 | static void bmp_active_resolved(struct resolver_query *resq, const char *errstr, |
1803 | int numaddrs, union sockunion *addr) | |
ed18356f DL |
1804 | { |
1805 | struct bmp_active *ba = container_of(resq, struct bmp_active, resq); | |
1806 | unsigned i; | |
1807 | ||
1808 | if (numaddrs <= 0) { | |
3286ca07 DL |
1809 | zlog_warn("bmp[%s]: hostname resolution failed: %s", |
1810 | ba->hostname, errstr); | |
1811 | ba->last_err = errstr; | |
125dc952 | 1812 | ba->curretry += ba->curretry / 2; |
a3d04c32 | 1813 | ba->addrpos = 0; |
125dc952 DL |
1814 | ba->addrtotal = 0; |
1815 | bmp_active_setup(ba); | |
1816 | return; | |
a3d04c32 | 1817 | } |
ed18356f | 1818 | |
125dc952 DL |
1819 | if (numaddrs > (int)array_size(ba->addrs)) |
1820 | numaddrs = array_size(ba->addrs); | |
1821 | ||
1822 | ba->addrpos = 0; | |
1823 | ba->addrtotal = numaddrs; | |
1824 | for (i = 0; i < ba->addrtotal; i++) | |
1825 | memcpy(&ba->addrs[i], &addr[i], sizeof(ba->addrs[0])); | |
1826 | ||
ed18356f DL |
1827 | bmp_active_connect(ba); |
1828 | } | |
1829 | ||
1830 | static int bmp_active_thread(struct thread *t) | |
1831 | { | |
1832 | struct bmp_active *ba = THREAD_ARG(t); | |
1833 | socklen_t slen; | |
1834 | int status, ret; | |
1835 | char buf[SU_ADDRSTRLEN]; | |
1836 | ||
1837 | /* all 3 end up here, though only timer or read+write are active | |
1838 | * at a time */ | |
1839 | THREAD_OFF(ba->t_timer); | |
1840 | THREAD_OFF(ba->t_read); | |
1841 | THREAD_OFF(ba->t_write); | |
1842 | ||
3286ca07 DL |
1843 | ba->last_err = NULL; |
1844 | ||
ed18356f DL |
1845 | if (ba->socket == -1) { |
1846 | resolver_resolve(&ba->resq, AF_UNSPEC, ba->hostname, | |
1847 | bmp_active_resolved); | |
1848 | return 0; | |
1849 | } | |
1850 | ||
1851 | slen = sizeof(status); | |
1852 | ret = getsockopt(ba->socket, SOL_SOCKET, SO_ERROR, (void *)&status, | |
1853 | &slen); | |
1854 | ||
1855 | sockunion2str(&ba->addrs[ba->addrpos], buf, sizeof(buf)); | |
1856 | if (ret < 0 || status != 0) { | |
3286ca07 DL |
1857 | ba->last_err = strerror(status); |
1858 | zlog_warn("bmp[%s]: failed to connect to %s:%d: %s", | |
1859 | ba->hostname, buf, ba->port, ba->last_err); | |
ed18356f DL |
1860 | goto out_next; |
1861 | } | |
1862 | ||
1863 | zlog_warn("bmp[%s]: outbound connection to %s:%d", | |
1864 | ba->hostname, buf, ba->port); | |
1865 | ||
1866 | ba->bmp = bmp_open(ba->targets, ba->socket); | |
1867 | if (!ba->bmp) | |
1868 | goto out_next; | |
1869 | ||
1870 | ba->bmp->active = ba; | |
1871 | ba->socket = -1; | |
1872 | ba->curretry = ba->minretry; | |
1873 | return 0; | |
1874 | ||
1875 | out_next: | |
1876 | close(ba->socket); | |
1877 | ba->socket = -1; | |
1878 | ba->addrpos++; | |
1879 | bmp_active_connect(ba); | |
1880 | return 0; | |
1881 | } | |
1882 | ||
1883 | static void bmp_active_disconnected(struct bmp_active *ba) | |
1884 | { | |
1885 | ba->bmp = NULL; | |
1886 | bmp_active_setup(ba); | |
1887 | } | |
1888 | ||
1889 | static void bmp_active_setup(struct bmp_active *ba) | |
1890 | { | |
1891 | THREAD_OFF(ba->t_timer); | |
1892 | THREAD_OFF(ba->t_read); | |
1893 | THREAD_OFF(ba->t_write); | |
1894 | ||
1895 | if (ba->bmp) | |
1896 | return; | |
1897 | if (ba->resq.callback) | |
1898 | return; | |
1899 | ||
1900 | if (ba->curretry > ba->maxretry) | |
1901 | ba->curretry = ba->maxretry; | |
1902 | ||
1903 | if (ba->socket == -1) | |
1904 | thread_add_timer_msec(bm->master, bmp_active_thread, ba, | |
1905 | ba->curretry, &ba->t_timer); | |
1906 | else { | |
1907 | thread_add_read(bm->master, bmp_active_thread, ba, ba->socket, | |
1908 | &ba->t_read); | |
1909 | thread_add_write(bm->master, bmp_active_thread, ba, ba->socket, | |
1910 | &ba->t_write); | |
1911 | } | |
1912 | } | |
1913 | ||
62b346ee | 1914 | static struct cmd_node bmp_node = { |
f4b8291f | 1915 | .name = "bmp", |
62b346ee | 1916 | .node = BMP_NODE, |
24389580 | 1917 | .parent_node = BGP_NODE, |
62b346ee DL |
1918 | .prompt = "%s(config-bgp-bmp)# " |
1919 | }; | |
ed18356f DL |
1920 | |
1921 | #define BMP_STR "BGP Monitoring Protocol\n" | |
1922 | ||
1923 | #ifndef VTYSH_EXTRACT_PL | |
33a9e196 | 1924 | #include "bgpd/bgp_bmp_clippy.c" |
ed18356f DL |
1925 | #endif |
1926 | ||
1927 | DEFPY_NOSH(bmp_targets_main, | |
1928 | bmp_targets_cmd, | |
1929 | "bmp targets BMPTARGETS", | |
1930 | BMP_STR | |
1931 | "Create BMP target group\n" | |
1932 | "Name of the BMP target group\n") | |
1933 | { | |
1934 | VTY_DECLVAR_CONTEXT(bgp, bgp); | |
1935 | struct bmp_targets *bt; | |
1936 | ||
1937 | bt = bmp_targets_get(bgp, bmptargets); | |
1938 | ||
1939 | VTY_PUSH_CONTEXT_SUB(BMP_NODE, bt); | |
1940 | return CMD_SUCCESS; | |
1941 | } | |
1942 | ||
1943 | DEFPY(no_bmp_targets_main, | |
1944 | no_bmp_targets_cmd, | |
1945 | "no bmp targets BMPTARGETS", | |
1946 | NO_STR | |
1947 | BMP_STR | |
1948 | "Delete BMP target group\n" | |
1949 | "Name of the BMP target group\n") | |
1950 | { | |
1951 | VTY_DECLVAR_CONTEXT(bgp, bgp); | |
1952 | struct bmp_targets *bt; | |
1953 | ||
1954 | bt = bmp_targets_find1(bgp, bmptargets); | |
1955 | if (!bt) { | |
1956 | vty_out(vty, "%% BMP target group not found\n"); | |
1957 | return CMD_WARNING; | |
1958 | } | |
1959 | bmp_targets_put(bt); | |
1960 | return CMD_SUCCESS; | |
1961 | } | |
1962 | ||
1963 | DEFPY(bmp_listener_main, | |
1964 | bmp_listener_cmd, | |
1965 | "bmp listener <X:X::X:X|A.B.C.D> port (1-65535)", | |
1966 | BMP_STR | |
1967 | "Listen for inbound BMP connections\n" | |
1968 | "IPv6 address to listen on\n" | |
1969 | "IPv4 address to listen on\n" | |
1970 | "TCP Port number\n" | |
1971 | "TCP Port number\n") | |
1972 | { | |
1973 | VTY_DECLVAR_CONTEXT_SUB(bmp_targets, bt); | |
1974 | struct bmp_listener *bl; | |
1975 | ||
1976 | bl = bmp_listener_get(bt, listener, port); | |
1977 | if (bl->sock == -1) | |
1978 | bmp_listener_start(bl); | |
1979 | ||
1980 | return CMD_SUCCESS; | |
1981 | } | |
1982 | ||
1983 | DEFPY(no_bmp_listener_main, | |
1984 | no_bmp_listener_cmd, | |
1985 | "no bmp listener <X:X::X:X|A.B.C.D> port (1-65535)", | |
1986 | NO_STR | |
1987 | BMP_STR | |
1988 | "Create BMP listener\n" | |
1989 | "IPv6 address to listen on\n" | |
1990 | "IPv4 address to listen on\n" | |
1991 | "TCP Port number\n" | |
1992 | "TCP Port number\n") | |
1993 | { | |
1994 | VTY_DECLVAR_CONTEXT_SUB(bmp_targets, bt); | |
1995 | struct bmp_listener *bl; | |
1996 | ||
1997 | bl = bmp_listener_find(bt, listener, port); | |
1998 | if (!bl) { | |
1999 | vty_out(vty, "%% BMP listener not found\n"); | |
2000 | return CMD_WARNING; | |
2001 | } | |
2002 | bmp_listener_stop(bl); | |
2003 | bmp_listener_put(bl); | |
2004 | return CMD_SUCCESS; | |
2005 | } | |
2006 | ||
2007 | DEFPY(bmp_connect, | |
2008 | bmp_connect_cmd, | |
3efd0893 | 2009 | "[no] bmp connect HOSTNAME port (1-65535) {min-retry (100-86400000)|max-retry (100-86400000)}", |
ed18356f DL |
2010 | NO_STR |
2011 | BMP_STR | |
2012 | "Actively establish connection to monitoring station\n" | |
2013 | "Monitoring station hostname or address\n" | |
2014 | "TCP port\n" | |
2015 | "TCP port\n" | |
2016 | "Minimum connection retry interval\n" | |
2017 | "Minimum connection retry interval (milliseconds)\n" | |
2018 | "Maximum connection retry interval\n" | |
2019 | "Maximum connection retry interval (milliseconds)\n") | |
2020 | { | |
2021 | VTY_DECLVAR_CONTEXT_SUB(bmp_targets, bt); | |
2022 | struct bmp_active *ba; | |
2023 | ||
2024 | if (no) { | |
2025 | ba = bmp_active_find(bt, hostname, port); | |
2026 | if (!ba) { | |
2027 | vty_out(vty, "%% No such active connection found\n"); | |
2028 | return CMD_WARNING; | |
2029 | } | |
2030 | bmp_active_put(ba); | |
2031 | return CMD_SUCCESS; | |
2032 | } | |
2033 | ||
2034 | ba = bmp_active_get(bt, hostname, port); | |
2035 | if (min_retry_str) | |
2036 | ba->minretry = min_retry; | |
2037 | if (max_retry_str) | |
2038 | ba->maxretry = max_retry; | |
2039 | ba->curretry = ba->minretry; | |
2040 | bmp_active_setup(ba); | |
2041 | ||
2042 | return CMD_SUCCESS; | |
2043 | } | |
2044 | ||
2045 | DEFPY(bmp_acl, | |
2046 | bmp_acl_cmd, | |
2047 | "[no] <ip|ipv6>$af access-list WORD", | |
2048 | NO_STR | |
2049 | IP_STR | |
2050 | IPV6_STR | |
2051 | "Access list to restrict BMP sessions\n" | |
2052 | "Access list name\n") | |
2053 | { | |
2054 | VTY_DECLVAR_CONTEXT_SUB(bmp_targets, bt); | |
2055 | char **what; | |
2056 | ||
2057 | if (no) | |
2058 | access_list = NULL; | |
2059 | if (!strcmp(af, "ipv6")) | |
2060 | what = &bt->acl6_name; | |
2061 | else | |
2062 | what = &bt->acl_name; | |
2063 | ||
2064 | XFREE(MTYPE_BMP_ACLNAME, *what); | |
2065 | if (access_list) | |
2066 | *what = XSTRDUP(MTYPE_BMP_ACLNAME, access_list); | |
2067 | ||
2068 | return CMD_SUCCESS; | |
2069 | } | |
2070 | ||
2071 | DEFPY(bmp_stats_cfg, | |
2072 | bmp_stats_cmd, | |
2073 | "[no] bmp stats [interval (100-86400000)]", | |
2074 | NO_STR | |
2075 | BMP_STR | |
2076 | "Send BMP statistics messages\n" | |
2077 | "Specify BMP stats interval\n" | |
2078 | "Interval (milliseconds) to send BMP Stats in\n") | |
2079 | { | |
2080 | VTY_DECLVAR_CONTEXT_SUB(bmp_targets, bt); | |
2081 | ||
2082 | THREAD_OFF(bt->t_stats); | |
2083 | if (no) | |
2084 | bt->stat_msec = 0; | |
2085 | else if (interval_str) | |
2086 | bt->stat_msec = interval; | |
2087 | else | |
2088 | bt->stat_msec = BMP_STAT_DEFAULT_TIMER; | |
2089 | ||
2090 | if (bt->stat_msec) | |
2091 | thread_add_timer_msec(bm->master, bmp_stats, bt, bt->stat_msec, | |
2092 | &bt->t_stats); | |
2093 | return CMD_SUCCESS; | |
2094 | } | |
2095 | ||
2096 | DEFPY(bmp_monitor_cfg, | |
2097 | bmp_monitor_cmd, | |
87102aa0 | 2098 | "[no] bmp monitor <ipv4|ipv6|l2vpn> <unicast|multicast|evpn> <pre-policy|post-policy>$policy", |
ed18356f DL |
2099 | NO_STR |
2100 | BMP_STR | |
2101 | "Send BMP route monitoring messages\n" | |
87102aa0 | 2102 | "Address Family\nAddress Family\nAddress Family\n" |
2103 | "Address Family\nAddress Family\nAddress Family\n" | |
ed18356f DL |
2104 | "Send state before policy and filter processing\n" |
2105 | "Send state with policy and filters applied\n") | |
2106 | { | |
2107 | int index = 0; | |
2108 | uint8_t flag, prev; | |
2109 | afi_t afi; | |
2110 | safi_t safi; | |
2111 | ||
2112 | VTY_DECLVAR_CONTEXT_SUB(bmp_targets, bt); | |
2113 | struct bmp *bmp; | |
2114 | ||
2115 | argv_find_and_parse_afi(argv, argc, &index, &afi); | |
2116 | argv_find_and_parse_safi(argv, argc, &index, &safi); | |
2117 | ||
2118 | if (policy[1] == 'r') | |
2119 | flag = BMP_MON_PREPOLICY; | |
2120 | else | |
2121 | flag = BMP_MON_POSTPOLICY; | |
2122 | ||
2123 | prev = bt->afimon[afi][safi]; | |
2124 | if (no) | |
2125 | bt->afimon[afi][safi] &= ~flag; | |
2126 | else | |
2127 | bt->afimon[afi][safi] |= flag; | |
2128 | ||
2129 | if (prev == bt->afimon[afi][safi]) | |
2130 | return CMD_SUCCESS; | |
2131 | ||
2132 | frr_each (bmp_session, &bt->sessions, bmp) { | |
2133 | if (bmp->syncafi == afi && bmp->syncsafi == safi) { | |
2134 | bmp->syncafi = AFI_MAX; | |
2135 | bmp->syncsafi = SAFI_MAX; | |
2136 | } | |
2137 | ||
2138 | if (!bt->afimon[afi][safi]) { | |
2139 | bmp->afistate[afi][safi] = BMP_AFI_INACTIVE; | |
2140 | continue; | |
2141 | } | |
2142 | ||
2143 | bmp->afistate[afi][safi] = BMP_AFI_NEEDSYNC; | |
2144 | } | |
2145 | ||
2146 | return CMD_SUCCESS; | |
2147 | } | |
2148 | ||
2149 | DEFPY(bmp_mirror_cfg, | |
2150 | bmp_mirror_cmd, | |
2151 | "[no] bmp mirror", | |
2152 | NO_STR | |
2153 | BMP_STR | |
2154 | "Send BMP route mirroring messages\n") | |
2155 | { | |
2156 | VTY_DECLVAR_CONTEXT_SUB(bmp_targets, bt); | |
2157 | struct bmp *bmp; | |
2158 | ||
2159 | if (bt->mirror == !no) | |
2160 | return CMD_SUCCESS; | |
2161 | ||
2162 | bt->mirror = !no; | |
2163 | if (bt->mirror) | |
2164 | return CMD_SUCCESS; | |
2165 | ||
2166 | frr_each (bmp_session, &bt->sessions, bmp) { | |
2167 | struct bmp_mirrorq *bmq; | |
2168 | ||
2169 | while ((bmq = bmp_pull_mirror(bmp))) | |
2170 | if (!bmq->refcount) | |
2171 | XFREE(MTYPE_BMP_MIRRORQ, bmq); | |
2172 | } | |
2173 | return CMD_SUCCESS; | |
2174 | } | |
2175 | ||
2176 | DEFPY(bmp_mirror_limit_cfg, | |
2177 | bmp_mirror_limit_cmd, | |
2178 | "bmp mirror buffer-limit (0-4294967294)", | |
2179 | BMP_STR | |
2180 | "Route Mirroring settings\n" | |
2181 | "Configure maximum memory used for buffered mirroring messages\n" | |
2182 | "Limit in bytes\n") | |
2183 | { | |
2184 | VTY_DECLVAR_CONTEXT(bgp, bgp); | |
2185 | struct bmp_bgp *bmpbgp; | |
2186 | ||
2187 | bmpbgp = bmp_bgp_get(bgp); | |
2188 | bmpbgp->mirror_qsizelimit = buffer_limit; | |
2189 | ||
2190 | return CMD_SUCCESS; | |
2191 | } | |
2192 | ||
2193 | DEFPY(no_bmp_mirror_limit_cfg, | |
2194 | no_bmp_mirror_limit_cmd, | |
2195 | "no bmp mirror buffer-limit [(0-4294967294)]", | |
2196 | NO_STR | |
2197 | BMP_STR | |
2198 | "Route Mirroring settings\n" | |
2199 | "Configure maximum memory used for buffered mirroring messages\n" | |
2200 | "Limit in bytes\n") | |
2201 | { | |
2202 | VTY_DECLVAR_CONTEXT(bgp, bgp); | |
2203 | struct bmp_bgp *bmpbgp; | |
2204 | ||
2205 | bmpbgp = bmp_bgp_get(bgp); | |
2206 | bmpbgp->mirror_qsizelimit = ~0UL; | |
2207 | ||
2208 | return CMD_SUCCESS; | |
2209 | } | |
2210 | ||
2211 | ||
2212 | DEFPY(show_bmp, | |
2213 | show_bmp_cmd, | |
2214 | "show bmp", | |
2215 | SHOW_STR | |
2216 | BMP_STR) | |
2217 | { | |
2218 | struct bmp_bgp *bmpbgp; | |
2219 | struct bmp_targets *bt; | |
2220 | struct bmp_listener *bl; | |
150470da | 2221 | struct bmp_active *ba; |
ed18356f DL |
2222 | struct bmp *bmp; |
2223 | struct ttable *tt; | |
2224 | char buf[SU_ADDRSTRLEN]; | |
150470da DL |
2225 | char uptime[BGP_UPTIME_LEN]; |
2226 | char *out; | |
ed18356f DL |
2227 | |
2228 | frr_each(bmp_bgph, &bmp_bgph, bmpbgp) { | |
2229 | vty_out(vty, "BMP state for BGP %s:\n\n", | |
2230 | bmpbgp->bgp->name_pretty); | |
2231 | vty_out(vty, " Route Mirroring %9zu bytes (%zu messages) pending\n", | |
2232 | bmpbgp->mirror_qsize, | |
2233 | bmp_mirrorq_count(&bmpbgp->mirrorq)); | |
2234 | vty_out(vty, " %9zu bytes maximum buffer used\n", | |
2235 | bmpbgp->mirror_qsizemax); | |
2236 | if (bmpbgp->mirror_qsizelimit != ~0UL) | |
2237 | vty_out(vty, " %9zu bytes buffer size limit\n", | |
2238 | bmpbgp->mirror_qsizelimit); | |
2239 | vty_out(vty, "\n"); | |
2240 | ||
2241 | frr_each(bmp_targets, &bmpbgp->targets, bt) { | |
2242 | vty_out(vty, " Targets \"%s\":\n", bt->name); | |
2243 | vty_out(vty, " Route Mirroring %sabled\n", | |
2244 | bt->mirror ? "en" : "dis"); | |
2245 | ||
2246 | afi_t afi; | |
2247 | safi_t safi; | |
2248 | ||
2249 | FOREACH_AFI_SAFI (afi, safi) { | |
2250 | const char *str = NULL; | |
2251 | ||
2252 | switch (bt->afimon[afi][safi]) { | |
2253 | case BMP_MON_PREPOLICY: | |
2254 | str = "pre-policy"; | |
2255 | break; | |
2256 | case BMP_MON_POSTPOLICY: | |
2257 | str = "post-policy"; | |
2258 | break; | |
2259 | case BMP_MON_PREPOLICY | BMP_MON_POSTPOLICY: | |
2260 | str = "pre-policy and post-policy"; | |
2261 | break; | |
2262 | } | |
2263 | if (!str) | |
2264 | continue; | |
2265 | vty_out(vty, " Route Monitoring %s %s %s\n", | |
2266 | afi2str(afi), safi2str(safi), str); | |
2267 | } | |
2268 | ||
2269 | vty_out(vty, " Listeners:\n"); | |
2270 | frr_each (bmp_listeners, &bt->listeners, bl) | |
2271 | vty_out(vty, " %s:%d\n", | |
2272 | sockunion2str(&bl->addr, buf, | |
2273 | SU_ADDRSTRLEN), bl->port); | |
2274 | ||
150470da DL |
2275 | vty_out(vty, "\n Outbound connections:\n"); |
2276 | tt = ttable_new(&ttable_styles[TTSTYLE_BLANK]); | |
2277 | ttable_add_row(tt, "remote|state||timer"); | |
2278 | ttable_rowseps(tt, 0, BOTTOM, true, '-'); | |
2279 | frr_each (bmp_actives, &bt->actives, ba) { | |
2280 | const char *state_str = "?"; | |
2281 | ||
2282 | if (ba->bmp) { | |
2283 | peer_uptime(ba->bmp->t_up.tv_sec, | |
2284 | uptime, sizeof(uptime), | |
2285 | false, NULL); | |
2286 | ttable_add_row(tt, "%s:%d|Up|%s|%s", | |
2287 | ba->hostname, ba->port, | |
2288 | ba->bmp->remote, uptime); | |
2289 | continue; | |
2290 | } | |
2291 | ||
2292 | uptime[0] = '\0'; | |
2293 | ||
2294 | if (ba->t_timer) { | |
2295 | long trem = thread_timer_remain_second( | |
2296 | ba->t_timer); | |
2297 | ||
2298 | peer_uptime(monotime(NULL) - trem, | |
2299 | uptime, sizeof(uptime), | |
2300 | false, NULL); | |
2301 | state_str = "RetryWait"; | |
2302 | } else if (ba->t_read) { | |
2303 | state_str = "Connecting"; | |
2304 | } else if (ba->resq.callback) { | |
2305 | state_str = "Resolving"; | |
2306 | } | |
2307 | ||
2308 | ttable_add_row(tt, "%s:%d|%s|%s|%s", | |
2309 | ba->hostname, ba->port, | |
2310 | state_str, | |
2311 | ba->last_err ? ba->last_err : "", | |
2312 | uptime); | |
2313 | continue; | |
2314 | } | |
2315 | out = ttable_dump(tt, "\n"); | |
2316 | vty_out(vty, "%s", out); | |
2317 | XFREE(MTYPE_TMP, out); | |
2318 | ttable_del(tt); | |
2319 | ||
ed18356f DL |
2320 | vty_out(vty, "\n %zu connected clients:\n", |
2321 | bmp_session_count(&bt->sessions)); | |
2322 | tt = ttable_new(&ttable_styles[TTSTYLE_BLANK]); | |
2323 | ttable_add_row(tt, "remote|uptime|MonSent|MirrSent|MirrLost|ByteSent|ByteQ|ByteQKernel"); | |
2324 | ttable_rowseps(tt, 0, BOTTOM, true, '-'); | |
2325 | ||
2326 | frr_each (bmp_session, &bt->sessions, bmp) { | |
2327 | uint64_t total; | |
2328 | size_t q, kq; | |
2329 | ||
2330 | pullwr_stats(bmp->pullwr, &total, &q, &kq); | |
2331 | ||
9e89da8c DL |
2332 | peer_uptime(bmp->t_up.tv_sec, uptime, |
2333 | sizeof(uptime), false, NULL); | |
2334 | ||
2335 | ttable_add_row(tt, "%s|%s|%Lu|%Lu|%Lu|%Lu|%zu|%zu", | |
2336 | bmp->remote, uptime, | |
ed18356f DL |
2337 | bmp->cnt_update, |
2338 | bmp->cnt_mirror, | |
2339 | bmp->cnt_mirror_overruns, | |
2340 | total, q, kq); | |
2341 | } | |
150470da | 2342 | out = ttable_dump(tt, "\n"); |
ed18356f DL |
2343 | vty_out(vty, "%s", out); |
2344 | XFREE(MTYPE_TMP, out); | |
2345 | ttable_del(tt); | |
2346 | vty_out(vty, "\n"); | |
2347 | } | |
2348 | } | |
2349 | ||
2350 | return CMD_SUCCESS; | |
2351 | } | |
2352 | ||
2353 | static int bmp_config_write(struct bgp *bgp, struct vty *vty) | |
2354 | { | |
2355 | struct bmp_bgp *bmpbgp = bmp_bgp_find(bgp); | |
2356 | struct bmp_targets *bt; | |
2357 | struct bmp_listener *bl; | |
2358 | struct bmp_active *ba; | |
2359 | char buf[SU_ADDRSTRLEN]; | |
2360 | afi_t afi; | |
2361 | safi_t safi; | |
2362 | ||
2363 | if (!bmpbgp) | |
2364 | return 0; | |
2365 | ||
2366 | if (bmpbgp->mirror_qsizelimit != ~0UL) | |
2367 | vty_out(vty, " !\n bmp mirror buffer-limit %zu\n", | |
2368 | bmpbgp->mirror_qsizelimit); | |
2369 | ||
2370 | frr_each(bmp_targets, &bmpbgp->targets, bt) { | |
2371 | vty_out(vty, " !\n bmp targets %s\n", bt->name); | |
2372 | ||
2373 | if (bt->acl6_name) | |
2374 | vty_out(vty, " ipv6 access-list %s\n", bt->acl6_name); | |
2375 | if (bt->acl_name) | |
2376 | vty_out(vty, " ip access-list %s\n", bt->acl_name); | |
2377 | ||
2378 | if (bt->stat_msec) | |
2379 | vty_out(vty, " bmp stats interval %d\n", | |
2380 | bt->stat_msec); | |
2381 | ||
2382 | if (bt->mirror) | |
2383 | vty_out(vty, " bmp mirror\n"); | |
2384 | ||
2385 | FOREACH_AFI_SAFI (afi, safi) { | |
2386 | const char *afi_str = (afi == AFI_IP) ? "ipv4" : "ipv6"; | |
2387 | ||
2388 | if (bt->afimon[afi][safi] & BMP_MON_PREPOLICY) | |
2389 | vty_out(vty, " bmp monitor %s %s pre-policy\n", | |
2390 | afi_str, safi2str(safi)); | |
2391 | if (bt->afimon[afi][safi] & BMP_MON_POSTPOLICY) | |
2392 | vty_out(vty, " bmp monitor %s %s post-policy\n", | |
2393 | afi_str, safi2str(safi)); | |
2394 | } | |
2395 | frr_each (bmp_listeners, &bt->listeners, bl) | |
2396 | vty_out(vty, " \n bmp listener %s port %d\n", | |
2397 | sockunion2str(&bl->addr, buf, SU_ADDRSTRLEN), | |
2398 | bl->port); | |
2399 | ||
2400 | frr_each (bmp_actives, &bt->actives, ba) | |
2401 | vty_out(vty, " bmp connect %s port %u min-retry %u max-retry %u\n", | |
2402 | ba->hostname, ba->port, ba->minretry, ba->maxretry); | |
2403 | } | |
2404 | ||
2405 | return 0; | |
2406 | } | |
2407 | ||
2408 | static int bgp_bmp_init(struct thread_master *tm) | |
2409 | { | |
612c2c15 | 2410 | install_node(&bmp_node); |
ed18356f DL |
2411 | install_default(BMP_NODE); |
2412 | install_element(BGP_NODE, &bmp_targets_cmd); | |
2413 | install_element(BGP_NODE, &no_bmp_targets_cmd); | |
2414 | ||
2415 | install_element(BMP_NODE, &bmp_listener_cmd); | |
2416 | install_element(BMP_NODE, &no_bmp_listener_cmd); | |
2417 | install_element(BMP_NODE, &bmp_connect_cmd); | |
2418 | install_element(BMP_NODE, &bmp_acl_cmd); | |
2419 | install_element(BMP_NODE, &bmp_stats_cmd); | |
2420 | install_element(BMP_NODE, &bmp_monitor_cmd); | |
2421 | install_element(BMP_NODE, &bmp_mirror_cmd); | |
2422 | ||
2423 | install_element(BGP_NODE, &bmp_mirror_limit_cmd); | |
2424 | install_element(BGP_NODE, &no_bmp_mirror_limit_cmd); | |
2425 | ||
2426 | install_element(VIEW_NODE, &show_bmp_cmd); | |
2427 | ||
2428 | resolver_init(tm); | |
0ba4eeec | 2429 | return 0; |
6c29258c YO |
2430 | } |
2431 | ||
0ba4eeec DL |
2432 | static int bgp_bmp_module_init(void) |
2433 | { | |
2434 | hook_register(bgp_packet_dump, bmp_mirror_packet); | |
ed18356f | 2435 | hook_register(bgp_packet_send, bmp_outgoing_packet); |
df9e8ae7 | 2436 | hook_register(peer_status_changed, bmp_peer_established); |
ed18356f DL |
2437 | hook_register(peer_backward_transition, bmp_peer_backward); |
2438 | hook_register(bgp_process, bmp_process); | |
2439 | hook_register(bgp_inst_config_write, bmp_config_write); | |
2440 | hook_register(bgp_inst_delete, bmp_bgp_del); | |
0ba4eeec DL |
2441 | hook_register(frr_late_init, bgp_bmp_init); |
2442 | return 0; | |
2443 | } | |
6c29258c | 2444 | |
0ba4eeec DL |
2445 | FRR_MODULE_SETUP(.name = "bgpd_bmp", .version = FRR_VERSION, |
2446 | .description = "bgpd BMP module", | |
80413c20 DL |
2447 | .init = bgp_bmp_module_init, |
2448 | ); |