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acddc0ed | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
244c1cdc DS |
2 | /* Kernel routing table updates using netlink over GNU/Linux system. |
3 | * Copyright (C) 1997, 98, 99 Kunihiro Ishiguro | |
244c1cdc DS |
4 | */ |
5 | ||
6 | #include <zebra.h> | |
43e52561 | 7 | |
d62a17ae | 8 | #include <sys/un.h> /* for sockaddr_un */ |
244c1cdc | 9 | #include <net/if.h> |
43e52561 QY |
10 | |
11 | #include "bfd.h" | |
12 | #include "buffer.h" | |
13 | #include "command.h" | |
14 | #include "if.h" | |
15 | #include "network.h" | |
16 | #include "ptm_lib.h" | |
17 | #include "rib.h" | |
18 | #include "stream.h" | |
43e52561 | 19 | #include "vrf.h" |
c8ed14dd | 20 | #include "vty.h" |
364fed6b | 21 | #include "lib_errors.h" |
43e52561 | 22 | |
244c1cdc | 23 | #include "zebra/debug.h" |
43e52561 QY |
24 | #include "zebra/interface.h" |
25 | #include "zebra/zebra_errors.h" | |
244c1cdc | 26 | #include "zebra/zebra_ptm.h" |
c43ed2e4 | 27 | #include "zebra/zebra_ptm_redistribute.h" |
161e9ab7 | 28 | #include "zebra/zebra_router.h" |
7c551956 | 29 | #include "zebra_vrf.h" |
244c1cdc | 30 | |
d3af6147 RZ |
31 | /* |
32 | * Choose the BFD implementation that we'll use. | |
33 | * | |
34 | * There are two implementations: | |
35 | * - PTM BFD: which uses an external daemon; | |
36 | * - bfdd: FRR's own BFD daemon; | |
37 | */ | |
38 | #if HAVE_BFDD == 0 | |
39 | ||
244c1cdc DS |
40 | #define ZEBRA_PTM_RECONNECT_TIME_INITIAL 1 /* initial reconnect is 1s */ |
41 | #define ZEBRA_PTM_RECONNECT_TIME_MAX 300 | |
c01acf98 | 42 | |
c01acf98 | 43 | #define PTM_MSG_LEN 4 |
0a56c844 | 44 | #define PTM_HEADER_LEN 37 |
c43ed2e4 DS |
45 | |
46 | const char ZEBRA_PTM_GET_STATUS_CMD[] = "get-status"; | |
47 | const char ZEBRA_PTM_BFD_START_CMD[] = "start-bfd-sess"; | |
48 | const char ZEBRA_PTM_BFD_STOP_CMD[] = "stop-bfd-sess"; | |
055c4dfc | 49 | const char ZEBRA_PTM_BFD_CLIENT_REG_CMD[] = "reg-bfd-client"; |
567b877d | 50 | const char ZEBRA_PTM_BFD_CLIENT_DEREG_CMD[] = "dereg-bfd-client"; |
c43ed2e4 | 51 | |
c8ed14dd | 52 | const char ZEBRA_PTM_CMD_STR[] = "cmd"; |
b255a4b1 | 53 | const char ZEBRA_PTM_CMD_STATUS_STR[] = "cmd_status"; |
c43ed2e4 DS |
54 | const char ZEBRA_PTM_PORT_STR[] = "port"; |
55 | const char ZEBRA_PTM_CBL_STR[] = "cbl status"; | |
56 | const char ZEBRA_PTM_PASS_STR[] = "pass"; | |
57 | const char ZEBRA_PTM_FAIL_STR[] = "fail"; | |
58 | const char ZEBRA_PTM_BFDSTATUS_STR[] = "state"; | |
59 | const char ZEBRA_PTM_BFDSTATUS_UP_STR[] = "Up"; | |
60 | const char ZEBRA_PTM_BFDSTATUS_DOWN_STR[] = "Down"; | |
61 | const char ZEBRA_PTM_BFDDEST_STR[] = "peer"; | |
62 | const char ZEBRA_PTM_BFDSRC_STR[] = "local"; | |
d553294e | 63 | const char ZEBRA_PTM_BFDVRF_STR[] = "vrf"; |
c43ed2e4 DS |
64 | const char ZEBRA_PTM_INVALID_PORT_NAME[] = "N/A"; |
65 | const char ZEBRA_PTM_INVALID_SRC_IP[] = "N/A"; | |
d553294e | 66 | const char ZEBRA_PTM_INVALID_VRF[] = "N/A"; |
c43ed2e4 DS |
67 | |
68 | const char ZEBRA_PTM_BFD_DST_IP_FIELD[] = "dstIPaddr"; | |
69 | const char ZEBRA_PTM_BFD_SRC_IP_FIELD[] = "srcIPaddr"; | |
70 | const char ZEBRA_PTM_BFD_MIN_RX_FIELD[] = "requiredMinRx"; | |
71 | const char ZEBRA_PTM_BFD_MIN_TX_FIELD[] = "upMinTx"; | |
72 | const char ZEBRA_PTM_BFD_DETECT_MULT_FIELD[] = "detectMult"; | |
73 | const char ZEBRA_PTM_BFD_MULTI_HOP_FIELD[] = "multiHop"; | |
74 | const char ZEBRA_PTM_BFD_CLIENT_FIELD[] = "client"; | |
75 | const char ZEBRA_PTM_BFD_SEQID_FIELD[] = "seqid"; | |
76 | const char ZEBRA_PTM_BFD_IFNAME_FIELD[] = "ifName"; | |
77 | const char ZEBRA_PTM_BFD_MAX_HOP_CNT_FIELD[] = "maxHopCnt"; | |
68fe91d6 | 78 | const char ZEBRA_PTM_BFD_SEND_EVENT[] = "sendEvent"; |
d553294e | 79 | const char ZEBRA_PTM_BFD_VRF_NAME_FIELD[] = "vrfName"; |
9beff0bd | 80 | const char ZEBRA_PTM_BFD_CBIT_FIELD[] = "bfdcbit"; |
c01acf98 | 81 | |
c43ed2e4 | 82 | static ptm_lib_handle_t *ptm_hdl; |
244c1cdc | 83 | |
c8ed14dd DS |
84 | struct zebra_ptm_cb ptm_cb; |
85 | ||
244c1cdc | 86 | static int zebra_ptm_socket_init(void); |
e6685141 | 87 | void zebra_ptm_sock_read(struct event *thread); |
d62a17ae | 88 | static void zebra_ptm_install_commands(void); |
b255a4b1 | 89 | static int zebra_ptm_handle_msg_cb(void *arg, void *in_ctxt); |
d62a17ae | 90 | void zebra_bfd_peer_replay_req(void); |
950bd436 | 91 | void zebra_ptm_send_status_req(void); |
92 | void zebra_ptm_reset_status(int ptm_disable); | |
8b1766b1 | 93 | static int zebra_ptm_bfd_client_deregister(struct zserv *client); |
244c1cdc DS |
94 | |
95 | const char ZEBRA_PTM_SOCK_NAME[] = "\0/var/run/ptmd.socket"; | |
96 | ||
d62a17ae | 97 | void zebra_ptm_init(void) |
244c1cdc | 98 | { |
d62a17ae | 99 | char buf[64]; |
c43ed2e4 | 100 | |
6006b807 | 101 | memset(&ptm_cb, 0, sizeof(ptm_cb)); |
c8ed14dd | 102 | |
d62a17ae | 103 | ptm_cb.out_data = calloc(1, ZEBRA_PTM_SEND_MAX_SOCKBUF); |
104 | if (!ptm_cb.out_data) { | |
9df414fe | 105 | zlog_debug("%s: Allocation of send data failed", __func__); |
d62a17ae | 106 | return; |
107 | } | |
c8ed14dd | 108 | |
d62a17ae | 109 | ptm_cb.in_data = calloc(1, ZEBRA_PTM_MAX_SOCKBUF); |
110 | if (!ptm_cb.in_data) { | |
9df414fe | 111 | zlog_debug("%s: Allocation of recv data failed", __func__); |
d62a17ae | 112 | free(ptm_cb.out_data); |
113 | return; | |
114 | } | |
c8ed14dd | 115 | |
d62a17ae | 116 | ptm_cb.pid = getpid(); |
117 | zebra_ptm_install_commands(); | |
c43ed2e4 | 118 | |
772270f3 | 119 | snprintf(buf, sizeof(buf), "%s", FRR_PTM_NAME); |
d62a17ae | 120 | ptm_hdl = ptm_lib_register(buf, NULL, zebra_ptm_handle_msg_cb, |
121 | zebra_ptm_handle_msg_cb); | |
122 | ptm_cb.wb = buffer_new(0); | |
c8ed14dd | 123 | |
d62a17ae | 124 | ptm_cb.reconnect_time = ZEBRA_PTM_RECONNECT_TIME_INITIAL; |
c8ed14dd | 125 | |
d62a17ae | 126 | ptm_cb.ptm_sock = -1; |
453844ab | 127 | |
21ccc0cf | 128 | hook_register(zserv_client_close, zebra_ptm_bfd_client_deregister); |
c8ed14dd DS |
129 | } |
130 | ||
d62a17ae | 131 | void zebra_ptm_finish(void) |
c8ed14dd | 132 | { |
d62a17ae | 133 | buffer_flush_all(ptm_cb.wb, ptm_cb.ptm_sock); |
c8ed14dd | 134 | |
d62a17ae | 135 | free(ptm_hdl); |
58ac32e2 | 136 | |
d62a17ae | 137 | if (ptm_cb.out_data) |
138 | free(ptm_cb.out_data); | |
c8ed14dd | 139 | |
d62a17ae | 140 | if (ptm_cb.in_data) |
141 | free(ptm_cb.in_data); | |
c8ed14dd | 142 | |
b3d6bc6e | 143 | /* Cancel events. */ |
e16d030c DS |
144 | EVENT_OFF(ptm_cb.t_read); |
145 | EVENT_OFF(ptm_cb.t_write); | |
146 | EVENT_OFF(ptm_cb.t_timer); | |
2376c3f2 | 147 | |
d62a17ae | 148 | if (ptm_cb.wb) |
149 | buffer_free(ptm_cb.wb); | |
2376c3f2 | 150 | |
1e9f448f | 151 | if (ptm_cb.ptm_sock >= 0) |
d62a17ae | 152 | close(ptm_cb.ptm_sock); |
c8ed14dd DS |
153 | } |
154 | ||
e6685141 | 155 | static void zebra_ptm_flush_messages(struct event *thread) |
c8ed14dd | 156 | { |
d62a17ae | 157 | ptm_cb.t_write = NULL; |
158 | ||
159 | if (ptm_cb.ptm_sock == -1) | |
cc9f21da | 160 | return; |
d62a17ae | 161 | |
162 | errno = 0; | |
163 | ||
164 | switch (buffer_flush_available(ptm_cb.wb, ptm_cb.ptm_sock)) { | |
165 | case BUFFER_ERROR: | |
1c50c1c0 QY |
166 | flog_err_sys(EC_LIB_SOCKET, "%s ptm socket error: %s", __func__, |
167 | safe_strerror(errno)); | |
d62a17ae | 168 | close(ptm_cb.ptm_sock); |
169 | ptm_cb.ptm_sock = -1; | |
170 | zebra_ptm_reset_status(0); | |
171 | ptm_cb.t_timer = NULL; | |
907a2395 DS |
172 | event_add_timer(zrouter.master, zebra_ptm_connect, NULL, |
173 | ptm_cb.reconnect_time, &ptm_cb.t_timer); | |
cc9f21da | 174 | return; |
d62a17ae | 175 | case BUFFER_PENDING: |
176 | ptm_cb.t_write = NULL; | |
907a2395 DS |
177 | event_add_write(zrouter.master, zebra_ptm_flush_messages, NULL, |
178 | ptm_cb.ptm_sock, &ptm_cb.t_write); | |
d62a17ae | 179 | break; |
180 | case BUFFER_EMPTY: | |
181 | break; | |
182 | } | |
c8ed14dd DS |
183 | } |
184 | ||
d62a17ae | 185 | static int zebra_ptm_send_message(char *data, int size) |
c8ed14dd | 186 | { |
d62a17ae | 187 | errno = 0; |
188 | switch (buffer_write(ptm_cb.wb, ptm_cb.ptm_sock, data, size)) { | |
189 | case BUFFER_ERROR: | |
1c50c1c0 QY |
190 | flog_err_sys(EC_LIB_SOCKET, "%s ptm socket error: %s", __func__, |
191 | safe_strerror(errno)); | |
d62a17ae | 192 | close(ptm_cb.ptm_sock); |
193 | ptm_cb.ptm_sock = -1; | |
194 | zebra_ptm_reset_status(0); | |
195 | ptm_cb.t_timer = NULL; | |
907a2395 DS |
196 | event_add_timer(zrouter.master, zebra_ptm_connect, NULL, |
197 | ptm_cb.reconnect_time, &ptm_cb.t_timer); | |
d62a17ae | 198 | return -1; |
199 | case BUFFER_EMPTY: | |
e16d030c | 200 | EVENT_OFF(ptm_cb.t_write); |
d62a17ae | 201 | break; |
202 | case BUFFER_PENDING: | |
907a2395 DS |
203 | event_add_write(zrouter.master, zebra_ptm_flush_messages, NULL, |
204 | ptm_cb.ptm_sock, &ptm_cb.t_write); | |
d62a17ae | 205 | break; |
206 | } | |
207 | ||
208 | return 0; | |
244c1cdc DS |
209 | } |
210 | ||
e6685141 | 211 | void zebra_ptm_connect(struct event *t) |
244c1cdc | 212 | { |
d62a17ae | 213 | int init = 0; |
214 | ||
215 | if (ptm_cb.ptm_sock == -1) { | |
216 | zebra_ptm_socket_init(); | |
217 | init = 1; | |
218 | } | |
219 | ||
220 | if (ptm_cb.ptm_sock != -1) { | |
221 | if (init) { | |
222 | ptm_cb.t_read = NULL; | |
907a2395 DS |
223 | event_add_read(zrouter.master, zebra_ptm_sock_read, |
224 | NULL, ptm_cb.ptm_sock, &ptm_cb.t_read); | |
d62a17ae | 225 | zebra_bfd_peer_replay_req(); |
226 | } | |
227 | zebra_ptm_send_status_req(); | |
228 | ptm_cb.reconnect_time = ZEBRA_PTM_RECONNECT_TIME_INITIAL; | |
229 | } else if (ptm_cb.reconnect_time < ZEBRA_PTM_RECONNECT_TIME_MAX) { | |
230 | ptm_cb.reconnect_time *= 2; | |
231 | if (ptm_cb.reconnect_time > ZEBRA_PTM_RECONNECT_TIME_MAX) | |
232 | ptm_cb.reconnect_time = ZEBRA_PTM_RECONNECT_TIME_MAX; | |
233 | ||
234 | ptm_cb.t_timer = NULL; | |
907a2395 DS |
235 | event_add_timer(zrouter.master, zebra_ptm_connect, NULL, |
236 | ptm_cb.reconnect_time, &ptm_cb.t_timer); | |
d62a17ae | 237 | } else if (ptm_cb.reconnect_time >= ZEBRA_PTM_RECONNECT_TIME_MAX) { |
238 | ptm_cb.reconnect_time = ZEBRA_PTM_RECONNECT_TIME_INITIAL; | |
239 | } | |
244c1cdc DS |
240 | } |
241 | ||
244c1cdc DS |
242 | DEFUN (zebra_ptm_enable, |
243 | zebra_ptm_enable_cmd, | |
244 | "ptm-enable", | |
245 | "Enable neighbor check with specified topology\n") | |
246 | { | |
d62a17ae | 247 | struct vrf *vrf; |
d62a17ae | 248 | struct interface *ifp; |
249 | struct zebra_if *if_data; | |
250 | ||
251 | ptm_cb.ptm_enable = ZEBRA_IF_PTM_ENABLE_ON; | |
252 | ||
a2addae8 | 253 | RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) |
451fda4f | 254 | FOR_ALL_INTERFACES (vrf, ifp) |
a2addae8 RW |
255 | if (!ifp->ptm_enable) { |
256 | if_data = (struct zebra_if *)ifp->info; | |
257 | if (if_data | |
258 | && (if_data->ptm_enable | |
9d303b37 | 259 | == ZEBRA_IF_PTM_ENABLE_UNSPEC)) { |
a2addae8 RW |
260 | ifp->ptm_enable = |
261 | ZEBRA_IF_PTM_ENABLE_ON; | |
262 | } | |
263 | /* Assign a default unknown status */ | |
264 | ifp->ptm_status = ZEBRA_PTM_STATUS_UNKNOWN; | |
d62a17ae | 265 | } |
d62a17ae | 266 | |
267 | zebra_ptm_connect(NULL); | |
268 | ||
269 | return CMD_SUCCESS; | |
244c1cdc DS |
270 | } |
271 | ||
272 | DEFUN (no_zebra_ptm_enable, | |
273 | no_zebra_ptm_enable_cmd, | |
274 | "no ptm-enable", | |
275 | NO_STR | |
276 | "Enable neighbor check with specified topology\n") | |
277 | { | |
d62a17ae | 278 | ptm_cb.ptm_enable = ZEBRA_IF_PTM_ENABLE_OFF; |
279 | zebra_ptm_reset_status(1); | |
280 | return CMD_SUCCESS; | |
244c1cdc DS |
281 | } |
282 | ||
986aa00f | 283 | DEFUN (zebra_ptm_enable_if, |
284 | zebra_ptm_enable_if_cmd, | |
285 | "ptm-enable", | |
286 | "Enable neighbor check with specified topology\n") | |
287 | { | |
d62a17ae | 288 | VTY_DECLVAR_CONTEXT(interface, ifp); |
289 | struct zebra_if *if_data; | |
290 | int old_ptm_enable; | |
291 | int send_linkdown = 0; | |
292 | ||
a2023fab | 293 | if_data = ifp->info; |
294 | if_data->ptm_enable = ZEBRA_IF_PTM_ENABLE_UNSPEC; | |
295 | ||
d62a17ae | 296 | if (ifp->ifindex == IFINDEX_INTERNAL) { |
297 | return CMD_SUCCESS; | |
298 | } | |
299 | ||
300 | old_ptm_enable = ifp->ptm_enable; | |
301 | ifp->ptm_enable = ptm_cb.ptm_enable; | |
302 | ||
303 | if (if_is_no_ptm_operative(ifp)) | |
304 | send_linkdown = 1; | |
305 | ||
306 | if (!old_ptm_enable && ptm_cb.ptm_enable) { | |
307 | if (!if_is_operative(ifp) && send_linkdown) { | |
308 | if (IS_ZEBRA_DEBUG_EVENT) | |
9165c5f5 | 309 | zlog_debug("%s: Bringing down interface %s", |
d62a17ae | 310 | __func__, ifp->name); |
311 | if_down(ifp); | |
312 | } | |
313 | } | |
314 | ||
d62a17ae | 315 | return CMD_SUCCESS; |
986aa00f | 316 | } |
317 | ||
318 | DEFUN (no_zebra_ptm_enable_if, | |
319 | no_zebra_ptm_enable_if_cmd, | |
320 | "no ptm-enable", | |
321 | NO_STR | |
322 | "Enable neighbor check with specified topology\n") | |
323 | { | |
d62a17ae | 324 | VTY_DECLVAR_CONTEXT(interface, ifp); |
325 | int send_linkup = 0; | |
326 | struct zebra_if *if_data; | |
327 | ||
328 | if ((ifp->ifindex != IFINDEX_INTERNAL) && (ifp->ptm_enable)) { | |
329 | if (!if_is_operative(ifp)) | |
330 | send_linkup = 1; | |
331 | ||
332 | ifp->ptm_enable = ZEBRA_IF_PTM_ENABLE_OFF; | |
333 | if (if_is_no_ptm_operative(ifp) && send_linkup) { | |
334 | if (IS_ZEBRA_DEBUG_EVENT) | |
9165c5f5 | 335 | zlog_debug("%s: Bringing up interface %s", |
d62a17ae | 336 | __func__, ifp->name); |
8b48cdb9 | 337 | if_up(ifp, true); |
d62a17ae | 338 | } |
339 | } | |
340 | ||
341 | if_data = ifp->info; | |
342 | if_data->ptm_enable = ZEBRA_IF_PTM_ENABLE_OFF; | |
343 | ||
344 | return CMD_SUCCESS; | |
986aa00f | 345 | } |
346 | ||
347 | ||
d62a17ae | 348 | void zebra_ptm_write(struct vty *vty) |
244c1cdc | 349 | { |
d62a17ae | 350 | if (ptm_cb.ptm_enable) |
351 | vty_out(vty, "ptm-enable\n"); | |
244c1cdc | 352 | |
d62a17ae | 353 | return; |
244c1cdc DS |
354 | } |
355 | ||
d62a17ae | 356 | static int zebra_ptm_socket_init(void) |
244c1cdc | 357 | { |
d62a17ae | 358 | int ret; |
359 | int sock; | |
360 | struct sockaddr_un addr; | |
361 | ||
362 | ptm_cb.ptm_sock = -1; | |
363 | ||
364 | sock = socket(PF_UNIX, SOCK_STREAM, 0); | |
365 | if (sock < 0) | |
366 | return -1; | |
367 | if (set_nonblocking(sock) < 0) { | |
368 | if (IS_ZEBRA_DEBUG_EVENT) | |
369 | zlog_debug("%s: Unable to set socket non blocking[%s]", | |
15569c58 | 370 | __func__, safe_strerror(errno)); |
d62a17ae | 371 | close(sock); |
372 | return -1; | |
373 | } | |
374 | ||
375 | /* Make server socket. */ | |
6006b807 | 376 | memset(&addr, 0, sizeof(addr)); |
d62a17ae | 377 | addr.sun_family = AF_UNIX; |
378 | memcpy(&addr.sun_path, ZEBRA_PTM_SOCK_NAME, | |
379 | sizeof(ZEBRA_PTM_SOCK_NAME)); | |
380 | ||
381 | ret = connect(sock, (struct sockaddr *)&addr, | |
382 | sizeof(addr.sun_family) + sizeof(ZEBRA_PTM_SOCK_NAME) | |
383 | - 1); | |
384 | if (ret < 0) { | |
385 | if (IS_ZEBRA_DEBUG_EVENT) | |
386 | zlog_debug("%s: Unable to connect to socket %s [%s]", | |
387 | __func__, ZEBRA_PTM_SOCK_NAME, | |
388 | safe_strerror(errno)); | |
389 | close(sock); | |
390 | return -1; | |
391 | } | |
392 | ptm_cb.ptm_sock = sock; | |
393 | return sock; | |
244c1cdc DS |
394 | } |
395 | ||
d62a17ae | 396 | static void zebra_ptm_install_commands(void) |
244c1cdc | 397 | { |
d62a17ae | 398 | install_element(CONFIG_NODE, &zebra_ptm_enable_cmd); |
399 | install_element(CONFIG_NODE, &no_zebra_ptm_enable_cmd); | |
400 | install_element(INTERFACE_NODE, &zebra_ptm_enable_if_cmd); | |
401 | install_element(INTERFACE_NODE, &no_zebra_ptm_enable_if_cmd); | |
244c1cdc DS |
402 | } |
403 | ||
c43ed2e4 | 404 | /* BFD session goes down, send message to the protocols. */ |
d62a17ae | 405 | static void if_bfd_session_update(struct interface *ifp, struct prefix *dp, |
406 | struct prefix *sp, int status, | |
407 | vrf_id_t vrf_id) | |
c01acf98 | 408 | { |
d62a17ae | 409 | if (IS_ZEBRA_DEBUG_EVENT) { |
410 | char buf[2][INET6_ADDRSTRLEN]; | |
411 | ||
412 | if (ifp) { | |
413 | zlog_debug( | |
3efd0893 | 414 | "MESSAGE: ZEBRA_INTERFACE_BFD_DEST_UPDATE %s/%d on %s %s event", |
d62a17ae | 415 | inet_ntop(dp->family, &dp->u.prefix, buf[0], |
416 | INET6_ADDRSTRLEN), | |
417 | dp->prefixlen, ifp->name, | |
418 | bfd_get_status_str(status)); | |
419 | } else { | |
c479e756 DS |
420 | struct vrf *vrf = vrf_lookup_by_id(vrf_id); |
421 | ||
d62a17ae | 422 | zlog_debug( |
3efd0893 | 423 | "MESSAGE: ZEBRA_INTERFACE_BFD_DEST_UPDATE %s/%d with src %s/%d and vrf %s(%u) %s event", |
d62a17ae | 424 | inet_ntop(dp->family, &dp->u.prefix, buf[0], |
425 | INET6_ADDRSTRLEN), | |
426 | dp->prefixlen, | |
427 | inet_ntop(sp->family, &sp->u.prefix, buf[1], | |
428 | INET6_ADDRSTRLEN), | |
c479e756 | 429 | sp->prefixlen, VRF_LOGNAME(vrf), vrf_id, |
d62a17ae | 430 | bfd_get_status_str(status)); |
431 | } | |
432 | } | |
433 | ||
434 | zebra_interface_bfd_update(ifp, dp, sp, status, vrf_id); | |
c01acf98 DS |
435 | } |
436 | ||
d62a17ae | 437 | static int zebra_ptm_handle_bfd_msg(void *arg, void *in_ctxt, |
438 | struct interface *ifp) | |
244c1cdc | 439 | { |
d62a17ae | 440 | char bfdst_str[32]; |
441 | char dest_str[64]; | |
442 | char src_str[64]; | |
443 | char vrf_str[64]; | |
444 | struct prefix dest_prefix; | |
445 | struct prefix src_prefix; | |
446 | vrf_id_t vrf_id; | |
447 | ||
448 | ptm_lib_find_key_in_msg(in_ctxt, ZEBRA_PTM_BFDSTATUS_STR, bfdst_str); | |
449 | ||
450 | if (bfdst_str[0] == '\0') { | |
451 | return -1; | |
452 | } | |
453 | ||
454 | ptm_lib_find_key_in_msg(in_ctxt, ZEBRA_PTM_BFDDEST_STR, dest_str); | |
455 | ||
456 | if (dest_str[0] == '\0') { | |
457 | zlog_debug("%s: Key %s not found in PTM msg", __func__, | |
458 | ZEBRA_PTM_BFDDEST_STR); | |
459 | return -1; | |
460 | } | |
461 | ||
462 | ptm_lib_find_key_in_msg(in_ctxt, ZEBRA_PTM_BFDSRC_STR, src_str); | |
463 | ||
464 | if (src_str[0] == '\0') { | |
465 | zlog_debug("%s: Key %s not found in PTM msg", __func__, | |
466 | ZEBRA_PTM_BFDSRC_STR); | |
467 | return -1; | |
468 | } | |
469 | ||
470 | ptm_lib_find_key_in_msg(in_ctxt, ZEBRA_PTM_BFDVRF_STR, vrf_str); | |
471 | ||
472 | if (vrf_str[0] == '\0') { | |
473 | zlog_debug("%s: Key %s not found in PTM msg", __func__, | |
474 | ZEBRA_PTM_BFDVRF_STR); | |
475 | return -1; | |
476 | } | |
477 | ||
478 | if (IS_ZEBRA_DEBUG_EVENT) | |
479 | zlog_debug( | |
3efd0893 | 480 | "%s: Recv Port [%s] bfd status [%s] vrf [%s] peer [%s] local [%s]", |
d62a17ae | 481 | __func__, ifp ? ifp->name : "N/A", bfdst_str, vrf_str, |
482 | dest_str, src_str); | |
483 | ||
484 | if (str2prefix(dest_str, &dest_prefix) == 0) { | |
e914ccbe | 485 | flog_err(EC_ZEBRA_PREFIX_PARSE_ERROR, |
1c50c1c0 | 486 | "%s: Peer addr %s not found", __func__, dest_str); |
d62a17ae | 487 | return -1; |
488 | } | |
489 | ||
6006b807 | 490 | memset(&src_prefix, 0, sizeof(src_prefix)); |
d62a17ae | 491 | if (strcmp(ZEBRA_PTM_INVALID_SRC_IP, src_str)) { |
492 | if (str2prefix(src_str, &src_prefix) == 0) { | |
e914ccbe | 493 | flog_err(EC_ZEBRA_PREFIX_PARSE_ERROR, |
1c50c1c0 QY |
494 | "%s: Local addr %s not found", __func__, |
495 | src_str); | |
d62a17ae | 496 | return -1; |
497 | } | |
498 | } | |
499 | ||
500 | if (!strcmp(ZEBRA_PTM_INVALID_VRF, vrf_str) && ifp) { | |
096f7609 | 501 | vrf_id = ifp->vrf->vrf_id; |
d62a17ae | 502 | } else { |
a383d4d2 PZ |
503 | struct vrf *pVrf; |
504 | ||
505 | pVrf = vrf_lookup_by_name(vrf_str); | |
506 | if (pVrf) | |
507 | vrf_id = pVrf->vrf_id; | |
508 | else | |
509 | vrf_id = VRF_DEFAULT; | |
d62a17ae | 510 | } |
511 | ||
512 | if (!strcmp(bfdst_str, ZEBRA_PTM_BFDSTATUS_DOWN_STR)) { | |
513 | if_bfd_session_update(ifp, &dest_prefix, &src_prefix, | |
514 | BFD_STATUS_DOWN, vrf_id); | |
515 | } else { | |
516 | if_bfd_session_update(ifp, &dest_prefix, &src_prefix, | |
517 | BFD_STATUS_UP, vrf_id); | |
518 | } | |
519 | ||
520 | return 0; | |
c01acf98 DS |
521 | } |
522 | ||
d62a17ae | 523 | static int zebra_ptm_handle_cbl_msg(void *arg, void *in_ctxt, |
524 | struct interface *ifp, char *cbl_str) | |
c01acf98 | 525 | { |
d62a17ae | 526 | int send_linkup = 0; |
527 | ||
528 | if (IS_ZEBRA_DEBUG_EVENT) | |
529 | zlog_debug("%s: Recv Port [%s] cbl status [%s]", __func__, | |
530 | ifp->name, cbl_str); | |
531 | ||
532 | if (!strcmp(cbl_str, ZEBRA_PTM_PASS_STR) | |
533 | && (ifp->ptm_status != ZEBRA_PTM_STATUS_UP)) { | |
534 | ||
535 | if (ifp->ptm_status == ZEBRA_PTM_STATUS_DOWN) | |
536 | send_linkup = 1; | |
537 | ifp->ptm_status = ZEBRA_PTM_STATUS_UP; | |
538 | if (ifp->ptm_enable && if_is_no_ptm_operative(ifp) | |
539 | && send_linkup) | |
8b48cdb9 | 540 | if_up(ifp, true); |
d62a17ae | 541 | } else if (!strcmp(cbl_str, ZEBRA_PTM_FAIL_STR) |
542 | && (ifp->ptm_status != ZEBRA_PTM_STATUS_DOWN)) { | |
543 | ifp->ptm_status = ZEBRA_PTM_STATUS_DOWN; | |
544 | if (ifp->ptm_enable && if_is_no_ptm_operative(ifp)) | |
545 | if_down(ifp); | |
546 | } | |
547 | ||
548 | return 0; | |
b255a4b1 | 549 | } |
950bd436 | 550 | |
b255a4b1 | 551 | /* |
552 | * zebra_ptm_handle_msg_cb - The purpose of this callback function is to handle | |
553 | * all the command responses and notifications received from PTM. | |
554 | * | |
555 | * Command responses: Upon establishing connection with PTM, Zebra requests | |
556 | * status of all interfaces using 'get-status' command if global ptm-enable | |
557 | * knob is enabled. As a response to the get-status command PTM sends status | |
558 | * of all the interfaces as command responses. All other type of command | |
559 | * responses with cmd_status key word are dropped. The sole purpose of | |
560 | * registering this function as callback for the command responses is to | |
561 | * handle the responses to get-status command. | |
562 | * | |
563 | * Notifications: Cable status and BFD session status changes are sent as | |
564 | * notifications by PTM. So, this function is also the callback function for | |
565 | * processing all the notifications from the PTM. | |
566 | * | |
567 | */ | |
d62a17ae | 568 | static int zebra_ptm_handle_msg_cb(void *arg, void *in_ctxt) |
b255a4b1 | 569 | { |
d62a17ae | 570 | struct interface *ifp = NULL; |
571 | char port_str[128]; | |
572 | char cbl_str[32]; | |
573 | char cmd_status_str[32]; | |
574 | ||
575 | ptm_lib_find_key_in_msg(in_ctxt, ZEBRA_PTM_CMD_STATUS_STR, | |
576 | cmd_status_str); | |
577 | ||
578 | /* Drop command response messages */ | |
579 | if (cmd_status_str[0] != '\0') { | |
580 | return 0; | |
581 | } | |
582 | ||
583 | ptm_lib_find_key_in_msg(in_ctxt, ZEBRA_PTM_PORT_STR, port_str); | |
584 | ||
585 | if (port_str[0] == '\0') { | |
586 | zlog_debug("%s: Key %s not found in PTM msg", __func__, | |
587 | ZEBRA_PTM_PORT_STR); | |
588 | return -1; | |
589 | } | |
590 | ||
591 | if (strcmp(ZEBRA_PTM_INVALID_PORT_NAME, port_str)) { | |
f13fdc67 IR |
592 | struct vrf *vrf; |
593 | int count = 0; | |
594 | ||
595 | RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) { | |
77712f66 | 596 | ifp = if_lookup_by_name_vrf(port_str, vrf); |
f13fdc67 IR |
597 | if (ifp) { |
598 | count++; | |
599 | if (!vrf_is_backend_netns()) | |
600 | break; | |
601 | } | |
602 | } | |
d62a17ae | 603 | |
604 | if (!ifp) { | |
e914ccbe | 605 | flog_warn(EC_ZEBRA_UNKNOWN_INTERFACE, |
9df414fe | 606 | "%s: %s not found in interface list", |
43e52561 | 607 | __func__, port_str); |
d62a17ae | 608 | return -1; |
609 | } | |
f13fdc67 IR |
610 | if (count > 1) { |
611 | flog_warn(EC_ZEBRA_UNKNOWN_INTERFACE, | |
612 | "%s: multiple interface with name %s", | |
613 | __func__, port_str); | |
614 | return -1; | |
615 | } | |
d62a17ae | 616 | } |
617 | ||
618 | ptm_lib_find_key_in_msg(in_ctxt, ZEBRA_PTM_CBL_STR, cbl_str); | |
619 | ||
620 | if (cbl_str[0] == '\0') { | |
621 | return zebra_ptm_handle_bfd_msg(arg, in_ctxt, ifp); | |
622 | } else { | |
623 | if (ifp) { | |
624 | return zebra_ptm_handle_cbl_msg(arg, in_ctxt, ifp, | |
625 | cbl_str); | |
626 | } else { | |
627 | return -1; | |
628 | } | |
629 | } | |
c01acf98 DS |
630 | } |
631 | ||
e6685141 | 632 | void zebra_ptm_sock_read(struct event *thread) |
c01acf98 | 633 | { |
2e1cc436 | 634 | int sock; |
d62a17ae | 635 | int rc; |
636 | ||
637 | errno = 0; | |
e16d030c | 638 | sock = EVENT_FD(thread); |
d62a17ae | 639 | |
640 | if (sock == -1) | |
cc9f21da | 641 | return; |
d62a17ae | 642 | |
643 | /* PTM communicates in CSV format */ | |
2e1cc436 | 644 | do { |
d62a17ae | 645 | rc = ptm_lib_process_msg(ptm_hdl, sock, ptm_cb.in_data, |
646 | ZEBRA_PTM_MAX_SOCKBUF, NULL); | |
2e1cc436 | 647 | } while (rc > 0); |
d62a17ae | 648 | |
2e1cc436 A |
649 | if (((rc == 0) && !errno) |
650 | || (errno && (errno != EWOULDBLOCK) && (errno != EAGAIN))) { | |
450971aa | 651 | flog_err_sys(EC_LIB_SOCKET, |
9df414fe QY |
652 | "%s routing socket error: %s(%d) bytes %d", |
653 | __func__, safe_strerror(errno), errno, rc); | |
2e1cc436 A |
654 | |
655 | close(ptm_cb.ptm_sock); | |
656 | ptm_cb.ptm_sock = -1; | |
657 | zebra_ptm_reset_status(0); | |
658 | ptm_cb.t_timer = NULL; | |
907a2395 DS |
659 | event_add_timer(zrouter.master, zebra_ptm_connect, NULL, |
660 | ptm_cb.reconnect_time, &ptm_cb.t_timer); | |
cc9f21da | 661 | return; |
d62a17ae | 662 | } |
663 | ||
664 | ptm_cb.t_read = NULL; | |
907a2395 DS |
665 | event_add_read(zrouter.master, zebra_ptm_sock_read, NULL, |
666 | ptm_cb.ptm_sock, &ptm_cb.t_read); | |
c43ed2e4 DS |
667 | } |
668 | ||
669 | /* BFD peer/dst register/update */ | |
89f4e507 | 670 | void zebra_ptm_bfd_dst_register(ZAPI_HANDLER_ARGS) |
c43ed2e4 | 671 | { |
d62a17ae | 672 | struct stream *s; |
673 | struct prefix src_p; | |
674 | struct prefix dst_p; | |
d7c0a89a QY |
675 | uint8_t multi_hop; |
676 | uint8_t multi_hop_cnt; | |
677 | uint8_t detect_mul; | |
d62a17ae | 678 | unsigned int min_rx_timer; |
679 | unsigned int min_tx_timer; | |
680 | char if_name[INTERFACE_NAMSIZ]; | |
d7c0a89a | 681 | uint8_t len; |
d62a17ae | 682 | void *out_ctxt; |
683 | char buf[INET6_ADDRSTRLEN]; | |
684 | char tmp_buf[64]; | |
685 | int data_len = ZEBRA_PTM_SEND_MAX_SOCKBUF; | |
686 | unsigned int pid; | |
9beff0bd | 687 | uint8_t cbit_set; |
d62a17ae | 688 | |
89f4e507 | 689 | if (hdr->command == ZEBRA_BFD_DEST_UPDATE) |
d62a17ae | 690 | client->bfd_peer_upd8_cnt++; |
691 | else | |
692 | client->bfd_peer_add_cnt++; | |
693 | ||
694 | if (IS_ZEBRA_DEBUG_EVENT) | |
695 | zlog_debug("bfd_dst_register msg from client %s: length=%d", | |
89f4e507 | 696 | zebra_route_string(client->proto), hdr->length); |
d62a17ae | 697 | |
698 | if (ptm_cb.ptm_sock == -1) { | |
699 | ptm_cb.t_timer = NULL; | |
907a2395 DS |
700 | event_add_timer(zrouter.master, zebra_ptm_connect, NULL, |
701 | ptm_cb.reconnect_time, &ptm_cb.t_timer); | |
8068a649 | 702 | return; |
d62a17ae | 703 | } |
704 | ||
705 | ptm_lib_init_msg(ptm_hdl, 0, PTMLIB_MSG_TYPE_CMD, NULL, &out_ctxt); | |
772270f3 | 706 | snprintf(tmp_buf, sizeof(tmp_buf), "%s", ZEBRA_PTM_BFD_START_CMD); |
d62a17ae | 707 | ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_CMD_STR, tmp_buf); |
772270f3 QY |
708 | snprintf(tmp_buf, sizeof(tmp_buf), "%s", |
709 | zebra_route_string(client->proto)); | |
d62a17ae | 710 | ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_CLIENT_FIELD, |
711 | tmp_buf); | |
712 | ||
1002497a | 713 | s = msg; |
d62a17ae | 714 | |
ec93aa12 | 715 | STREAM_GETL(s, pid); |
772270f3 | 716 | snprintf(tmp_buf, sizeof(tmp_buf), "%d", pid); |
d62a17ae | 717 | ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_SEQID_FIELD, |
718 | tmp_buf); | |
719 | ||
ec93aa12 | 720 | STREAM_GETW(s, dst_p.family); |
d62a17ae | 721 | |
722 | if (dst_p.family == AF_INET) | |
723 | dst_p.prefixlen = IPV4_MAX_BYTELEN; | |
724 | else | |
725 | dst_p.prefixlen = IPV6_MAX_BYTELEN; | |
726 | ||
ec93aa12 | 727 | STREAM_GET(&dst_p.u.prefix, s, dst_p.prefixlen); |
d62a17ae | 728 | if (dst_p.family == AF_INET) { |
729 | inet_ntop(AF_INET, &dst_p.u.prefix4, buf, sizeof(buf)); | |
730 | ptm_lib_append_msg(ptm_hdl, out_ctxt, | |
731 | ZEBRA_PTM_BFD_DST_IP_FIELD, buf); | |
732 | } else { | |
733 | inet_ntop(AF_INET6, &dst_p.u.prefix6, buf, sizeof(buf)); | |
734 | ptm_lib_append_msg(ptm_hdl, out_ctxt, | |
735 | ZEBRA_PTM_BFD_DST_IP_FIELD, buf); | |
736 | } | |
737 | ||
ec93aa12 | 738 | STREAM_GETL(s, min_rx_timer); |
772270f3 | 739 | snprintf(tmp_buf, sizeof(tmp_buf), "%d", min_rx_timer); |
d62a17ae | 740 | ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_MIN_RX_FIELD, |
741 | tmp_buf); | |
ec93aa12 | 742 | STREAM_GETL(s, min_tx_timer); |
772270f3 | 743 | snprintf(tmp_buf, sizeof(tmp_buf), "%d", min_tx_timer); |
d62a17ae | 744 | ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_MIN_TX_FIELD, |
745 | tmp_buf); | |
ec93aa12 | 746 | STREAM_GETC(s, detect_mul); |
772270f3 | 747 | snprintf(tmp_buf, sizeof(tmp_buf), "%d", detect_mul); |
d62a17ae | 748 | ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_DETECT_MULT_FIELD, |
749 | tmp_buf); | |
750 | ||
ec93aa12 | 751 | STREAM_GETC(s, multi_hop); |
d62a17ae | 752 | if (multi_hop) { |
772270f3 | 753 | snprintf(tmp_buf, sizeof(tmp_buf), "%d", 1); |
d62a17ae | 754 | ptm_lib_append_msg(ptm_hdl, out_ctxt, |
755 | ZEBRA_PTM_BFD_MULTI_HOP_FIELD, tmp_buf); | |
ec93aa12 | 756 | STREAM_GETW(s, src_p.family); |
d62a17ae | 757 | |
758 | if (src_p.family == AF_INET) | |
759 | src_p.prefixlen = IPV4_MAX_BYTELEN; | |
760 | else | |
761 | src_p.prefixlen = IPV6_MAX_BYTELEN; | |
762 | ||
ec93aa12 | 763 | STREAM_GET(&src_p.u.prefix, s, src_p.prefixlen); |
d62a17ae | 764 | if (src_p.family == AF_INET) { |
765 | inet_ntop(AF_INET, &src_p.u.prefix4, buf, sizeof(buf)); | |
766 | ptm_lib_append_msg(ptm_hdl, out_ctxt, | |
767 | ZEBRA_PTM_BFD_SRC_IP_FIELD, buf); | |
768 | } else { | |
769 | inet_ntop(AF_INET6, &src_p.u.prefix6, buf, sizeof(buf)); | |
770 | ptm_lib_append_msg(ptm_hdl, out_ctxt, | |
771 | ZEBRA_PTM_BFD_SRC_IP_FIELD, buf); | |
772 | } | |
773 | ||
ec93aa12 | 774 | STREAM_GETC(s, multi_hop_cnt); |
772270f3 | 775 | snprintf(tmp_buf, sizeof(tmp_buf), "%d", multi_hop_cnt); |
d62a17ae | 776 | ptm_lib_append_msg(ptm_hdl, out_ctxt, |
777 | ZEBRA_PTM_BFD_MAX_HOP_CNT_FIELD, tmp_buf); | |
778 | ||
779 | if (zvrf_id(zvrf) != VRF_DEFAULT) | |
780 | ptm_lib_append_msg(ptm_hdl, out_ctxt, | |
781 | ZEBRA_PTM_BFD_VRF_NAME_FIELD, | |
782 | zvrf_name(zvrf)); | |
783 | } else { | |
784 | if (dst_p.family == AF_INET6) { | |
ec93aa12 | 785 | STREAM_GETW(s, src_p.family); |
d62a17ae | 786 | |
787 | if (src_p.family == AF_INET) | |
788 | src_p.prefixlen = IPV4_MAX_BYTELEN; | |
789 | else | |
790 | src_p.prefixlen = IPV6_MAX_BYTELEN; | |
791 | ||
ec93aa12 | 792 | STREAM_GET(&src_p.u.prefix, s, src_p.prefixlen); |
d62a17ae | 793 | if (src_p.family == AF_INET) { |
794 | inet_ntop(AF_INET, &src_p.u.prefix4, buf, | |
795 | sizeof(buf)); | |
796 | ptm_lib_append_msg(ptm_hdl, out_ctxt, | |
797 | ZEBRA_PTM_BFD_SRC_IP_FIELD, | |
798 | buf); | |
799 | } else { | |
800 | inet_ntop(AF_INET6, &src_p.u.prefix6, buf, | |
801 | sizeof(buf)); | |
802 | ptm_lib_append_msg(ptm_hdl, out_ctxt, | |
803 | ZEBRA_PTM_BFD_SRC_IP_FIELD, | |
804 | buf); | |
805 | } | |
806 | } | |
ec93aa12 DS |
807 | STREAM_GETC(s, len); |
808 | STREAM_GET(if_name, s, len); | |
d62a17ae | 809 | if_name[len] = '\0'; |
810 | ||
811 | ptm_lib_append_msg(ptm_hdl, out_ctxt, | |
812 | ZEBRA_PTM_BFD_IFNAME_FIELD, if_name); | |
813 | } | |
9beff0bd | 814 | STREAM_GETC(s, cbit_set); |
772270f3 | 815 | snprintf(tmp_buf, sizeof(tmp_buf), "%d", cbit_set); |
9beff0bd PG |
816 | ptm_lib_append_msg(ptm_hdl, out_ctxt, |
817 | ZEBRA_PTM_BFD_CBIT_FIELD, tmp_buf); | |
d62a17ae | 818 | |
772270f3 | 819 | snprintf(tmp_buf, sizeof(tmp_buf), "%d", 1); |
d62a17ae | 820 | ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_SEND_EVENT, |
821 | tmp_buf); | |
822 | ||
823 | ptm_lib_complete_msg(ptm_hdl, out_ctxt, ptm_cb.out_data, &data_len); | |
824 | ||
825 | if (IS_ZEBRA_DEBUG_SEND) | |
826 | zlog_debug("%s: Sent message (%d) %s", __func__, data_len, | |
827 | ptm_cb.out_data); | |
828 | zebra_ptm_send_message(ptm_cb.out_data, data_len); | |
ec93aa12 | 829 | |
8068a649 | 830 | return; |
9cc46248 | 831 | |
ec93aa12 | 832 | stream_failure: |
a928d464 | 833 | ptm_lib_cleanup_msg(ptm_hdl, out_ctxt); |
c43ed2e4 DS |
834 | } |
835 | ||
836 | /* BFD peer/dst deregister */ | |
89f4e507 | 837 | void zebra_ptm_bfd_dst_deregister(ZAPI_HANDLER_ARGS) |
c43ed2e4 | 838 | { |
d62a17ae | 839 | struct stream *s; |
840 | struct prefix src_p; | |
841 | struct prefix dst_p; | |
d7c0a89a | 842 | uint8_t multi_hop; |
d62a17ae | 843 | char if_name[INTERFACE_NAMSIZ]; |
d7c0a89a | 844 | uint8_t len; |
d62a17ae | 845 | char buf[INET6_ADDRSTRLEN]; |
846 | char tmp_buf[64]; | |
847 | int data_len = ZEBRA_PTM_SEND_MAX_SOCKBUF; | |
848 | void *out_ctxt; | |
849 | unsigned int pid; | |
850 | ||
851 | client->bfd_peer_del_cnt++; | |
852 | ||
853 | if (IS_ZEBRA_DEBUG_EVENT) | |
854 | zlog_debug("bfd_dst_deregister msg from client %s: length=%d", | |
89f4e507 | 855 | zebra_route_string(client->proto), hdr->length); |
d62a17ae | 856 | |
857 | if (ptm_cb.ptm_sock == -1) { | |
858 | ptm_cb.t_timer = NULL; | |
907a2395 DS |
859 | event_add_timer(zrouter.master, zebra_ptm_connect, NULL, |
860 | ptm_cb.reconnect_time, &ptm_cb.t_timer); | |
8068a649 | 861 | return; |
d62a17ae | 862 | } |
863 | ||
864 | ptm_lib_init_msg(ptm_hdl, 0, PTMLIB_MSG_TYPE_CMD, NULL, &out_ctxt); | |
865 | ||
772270f3 | 866 | snprintf(tmp_buf, sizeof(tmp_buf), "%s", ZEBRA_PTM_BFD_STOP_CMD); |
d62a17ae | 867 | ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_CMD_STR, tmp_buf); |
868 | ||
772270f3 QY |
869 | snprintf(tmp_buf, sizeof(tmp_buf), "%s", |
870 | zebra_route_string(client->proto)); | |
d62a17ae | 871 | ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_CLIENT_FIELD, |
872 | tmp_buf); | |
873 | ||
1002497a | 874 | s = msg; |
d62a17ae | 875 | |
ec93aa12 | 876 | STREAM_GETL(s, pid); |
772270f3 | 877 | snprintf(tmp_buf, sizeof(tmp_buf), "%d", pid); |
d62a17ae | 878 | ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_SEQID_FIELD, |
879 | tmp_buf); | |
880 | ||
ec93aa12 | 881 | STREAM_GETW(s, dst_p.family); |
d62a17ae | 882 | |
883 | if (dst_p.family == AF_INET) | |
884 | dst_p.prefixlen = IPV4_MAX_BYTELEN; | |
885 | else | |
886 | dst_p.prefixlen = IPV6_MAX_BYTELEN; | |
887 | ||
ec93aa12 | 888 | STREAM_GET(&dst_p.u.prefix, s, dst_p.prefixlen); |
d62a17ae | 889 | if (dst_p.family == AF_INET) |
890 | inet_ntop(AF_INET, &dst_p.u.prefix4, buf, sizeof(buf)); | |
891 | else | |
892 | inet_ntop(AF_INET6, &dst_p.u.prefix6, buf, sizeof(buf)); | |
893 | ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_DST_IP_FIELD, buf); | |
894 | ||
895 | ||
ec93aa12 | 896 | STREAM_GETC(s, multi_hop); |
d62a17ae | 897 | if (multi_hop) { |
772270f3 | 898 | snprintf(tmp_buf, sizeof(tmp_buf), "%d", 1); |
d62a17ae | 899 | ptm_lib_append_msg(ptm_hdl, out_ctxt, |
900 | ZEBRA_PTM_BFD_MULTI_HOP_FIELD, tmp_buf); | |
901 | ||
ec93aa12 | 902 | STREAM_GETW(s, src_p.family); |
d62a17ae | 903 | |
904 | if (src_p.family == AF_INET) | |
905 | src_p.prefixlen = IPV4_MAX_BYTELEN; | |
906 | else | |
907 | src_p.prefixlen = IPV6_MAX_BYTELEN; | |
908 | ||
ec93aa12 | 909 | STREAM_GET(&src_p.u.prefix, s, src_p.prefixlen); |
d62a17ae | 910 | if (src_p.family == AF_INET) |
911 | inet_ntop(AF_INET, &src_p.u.prefix4, buf, sizeof(buf)); | |
912 | else | |
913 | inet_ntop(AF_INET6, &src_p.u.prefix6, buf, sizeof(buf)); | |
914 | ptm_lib_append_msg(ptm_hdl, out_ctxt, | |
915 | ZEBRA_PTM_BFD_SRC_IP_FIELD, buf); | |
916 | ||
917 | if (zvrf_id(zvrf) != VRF_DEFAULT) | |
918 | ptm_lib_append_msg(ptm_hdl, out_ctxt, | |
919 | ZEBRA_PTM_BFD_VRF_NAME_FIELD, | |
920 | zvrf_name(zvrf)); | |
921 | } else { | |
922 | if (dst_p.family == AF_INET6) { | |
ec93aa12 | 923 | STREAM_GETW(s, src_p.family); |
d62a17ae | 924 | |
925 | if (src_p.family == AF_INET) | |
926 | src_p.prefixlen = IPV4_MAX_BYTELEN; | |
927 | else | |
928 | src_p.prefixlen = IPV6_MAX_BYTELEN; | |
929 | ||
ec93aa12 | 930 | STREAM_GET(&src_p.u.prefix, s, src_p.prefixlen); |
d62a17ae | 931 | if (src_p.family == AF_INET) { |
932 | inet_ntop(AF_INET, &src_p.u.prefix4, buf, | |
933 | sizeof(buf)); | |
934 | ptm_lib_append_msg(ptm_hdl, out_ctxt, | |
935 | ZEBRA_PTM_BFD_SRC_IP_FIELD, | |
936 | buf); | |
937 | } else { | |
938 | inet_ntop(AF_INET6, &src_p.u.prefix6, buf, | |
939 | sizeof(buf)); | |
940 | ptm_lib_append_msg(ptm_hdl, out_ctxt, | |
941 | ZEBRA_PTM_BFD_SRC_IP_FIELD, | |
942 | buf); | |
943 | } | |
944 | } | |
945 | ||
ec93aa12 DS |
946 | STREAM_GETC(s, len); |
947 | STREAM_GET(if_name, s, len); | |
d62a17ae | 948 | if_name[len] = '\0'; |
949 | ||
950 | ptm_lib_append_msg(ptm_hdl, out_ctxt, | |
951 | ZEBRA_PTM_BFD_IFNAME_FIELD, if_name); | |
952 | } | |
953 | ||
954 | ptm_lib_complete_msg(ptm_hdl, out_ctxt, ptm_cb.out_data, &data_len); | |
955 | if (IS_ZEBRA_DEBUG_SEND) | |
956 | zlog_debug("%s: Sent message (%d) %s", __func__, data_len, | |
957 | ptm_cb.out_data); | |
958 | ||
959 | zebra_ptm_send_message(ptm_cb.out_data, data_len); | |
ec93aa12 | 960 | |
8068a649 | 961 | return; |
9cc46248 | 962 | |
ec93aa12 | 963 | stream_failure: |
a928d464 | 964 | ptm_lib_cleanup_msg(ptm_hdl, out_ctxt); |
c01acf98 | 965 | } |
c8ed14dd | 966 | |
055c4dfc | 967 | /* BFD client register */ |
89f4e507 | 968 | void zebra_ptm_bfd_client_register(ZAPI_HANDLER_ARGS) |
055c4dfc | 969 | { |
d62a17ae | 970 | struct stream *s; |
971 | unsigned int pid; | |
9cc46248 | 972 | void *out_ctxt = NULL; |
d62a17ae | 973 | char tmp_buf[64]; |
974 | int data_len = ZEBRA_PTM_SEND_MAX_SOCKBUF; | |
055c4dfc | 975 | |
d62a17ae | 976 | client->bfd_client_reg_cnt++; |
055c4dfc | 977 | |
d62a17ae | 978 | if (IS_ZEBRA_DEBUG_EVENT) |
979 | zlog_debug("bfd_client_register msg from client %s: length=%d", | |
89f4e507 | 980 | zebra_route_string(client->proto), hdr->length); |
055c4dfc | 981 | |
1002497a | 982 | s = msg; |
ec93aa12 | 983 | STREAM_GETL(s, pid); |
bf6e101c | 984 | |
d62a17ae | 985 | if (ptm_cb.ptm_sock == -1) { |
986 | ptm_cb.t_timer = NULL; | |
907a2395 DS |
987 | event_add_timer(zrouter.master, zebra_ptm_connect, NULL, |
988 | ptm_cb.reconnect_time, &ptm_cb.t_timer); | |
8068a649 | 989 | return; |
d62a17ae | 990 | } |
055c4dfc | 991 | |
d62a17ae | 992 | ptm_lib_init_msg(ptm_hdl, 0, PTMLIB_MSG_TYPE_CMD, NULL, &out_ctxt); |
055c4dfc | 993 | |
772270f3 | 994 | snprintf(tmp_buf, sizeof(tmp_buf), "%s", ZEBRA_PTM_BFD_CLIENT_REG_CMD); |
d62a17ae | 995 | ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_CMD_STR, tmp_buf); |
055c4dfc | 996 | |
772270f3 QY |
997 | snprintf(tmp_buf, sizeof(tmp_buf), "%s", |
998 | zebra_route_string(client->proto)); | |
d62a17ae | 999 | ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_CLIENT_FIELD, |
1000 | tmp_buf); | |
055c4dfc | 1001 | |
772270f3 | 1002 | snprintf(tmp_buf, sizeof(tmp_buf), "%d", pid); |
d62a17ae | 1003 | ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_SEQID_FIELD, |
1004 | tmp_buf); | |
055c4dfc | 1005 | |
d62a17ae | 1006 | ptm_lib_complete_msg(ptm_hdl, out_ctxt, ptm_cb.out_data, &data_len); |
055c4dfc | 1007 | |
d62a17ae | 1008 | if (IS_ZEBRA_DEBUG_SEND) |
1009 | zlog_debug("%s: Sent message (%d) %s", __func__, data_len, | |
1010 | ptm_cb.out_data); | |
1011 | zebra_ptm_send_message(ptm_cb.out_data, data_len); | |
2376c3f2 | 1012 | |
d62a17ae | 1013 | SET_FLAG(ptm_cb.client_flags[client->proto], |
1014 | ZEBRA_PTM_BFD_CLIENT_FLAG_REG); | |
9cc46248 | 1015 | |
8068a649 | 1016 | return; |
9cc46248 | 1017 | |
ec93aa12 | 1018 | stream_failure: |
6447dbb3 DS |
1019 | /* |
1020 | * IF we ever add more STREAM_GETXXX functions after the out_ctxt | |
1021 | * is allocated then we need to add this code back in | |
1022 | * | |
1023 | * if (out_ctxt) | |
1024 | * ptm_lib_cleanup_msg(ptm_hdl, out_ctxt); | |
1025 | */ | |
8068a649 | 1026 | return; |
055c4dfc | 1027 | } |
1028 | ||
567b877d | 1029 | /* BFD client deregister */ |
453844ab | 1030 | int zebra_ptm_bfd_client_deregister(struct zserv *client) |
567b877d | 1031 | { |
453844ab | 1032 | uint8_t proto = client->proto; |
d62a17ae | 1033 | void *out_ctxt; |
1034 | char tmp_buf[64]; | |
1035 | int data_len = ZEBRA_PTM_SEND_MAX_SOCKBUF; | |
567b877d | 1036 | |
4943f243 | 1037 | if (!IS_BFD_ENABLED_PROTOCOL(proto)) |
453844ab | 1038 | return 0; |
567b877d | 1039 | |
d62a17ae | 1040 | if (IS_ZEBRA_DEBUG_EVENT) |
9df414fe QY |
1041 | zlog_debug("bfd_client_deregister msg for client %s", |
1042 | zebra_route_string(proto)); | |
567b877d | 1043 | |
d62a17ae | 1044 | if (ptm_cb.ptm_sock == -1) { |
1045 | ptm_cb.t_timer = NULL; | |
907a2395 DS |
1046 | event_add_timer(zrouter.master, zebra_ptm_connect, NULL, |
1047 | ptm_cb.reconnect_time, &ptm_cb.t_timer); | |
453844ab | 1048 | return 0; |
d62a17ae | 1049 | } |
567b877d | 1050 | |
d62a17ae | 1051 | ptm_lib_init_msg(ptm_hdl, 0, PTMLIB_MSG_TYPE_CMD, NULL, &out_ctxt); |
567b877d | 1052 | |
772270f3 QY |
1053 | snprintf(tmp_buf, sizeof(tmp_buf), "%s", |
1054 | ZEBRA_PTM_BFD_CLIENT_DEREG_CMD); | |
d62a17ae | 1055 | ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_CMD_STR, tmp_buf); |
567b877d | 1056 | |
772270f3 | 1057 | snprintf(tmp_buf, sizeof(tmp_buf), "%s", zebra_route_string(proto)); |
d62a17ae | 1058 | ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_CLIENT_FIELD, |
1059 | tmp_buf); | |
567b877d | 1060 | |
d62a17ae | 1061 | ptm_lib_complete_msg(ptm_hdl, out_ctxt, ptm_cb.out_data, &data_len); |
567b877d | 1062 | |
d62a17ae | 1063 | if (IS_ZEBRA_DEBUG_SEND) |
1064 | zlog_debug("%s: Sent message (%d) %s", __func__, data_len, | |
1065 | ptm_cb.out_data); | |
2376c3f2 | 1066 | |
d62a17ae | 1067 | zebra_ptm_send_message(ptm_cb.out_data, data_len); |
1068 | UNSET_FLAG(ptm_cb.client_flags[proto], ZEBRA_PTM_BFD_CLIENT_FLAG_REG); | |
453844ab QY |
1069 | |
1070 | return 0; | |
567b877d | 1071 | } |
1072 | ||
d62a17ae | 1073 | int zebra_ptm_get_enable_state(void) |
c8ed14dd | 1074 | { |
d62a17ae | 1075 | return ptm_cb.ptm_enable; |
c8ed14dd | 1076 | } |
950bd436 | 1077 | |
1078 | /* | |
1079 | * zebra_ptm_get_status_str - Convert status to a display string. | |
1080 | */ | |
d62a17ae | 1081 | static const char *zebra_ptm_get_status_str(int status) |
950bd436 | 1082 | { |
d62a17ae | 1083 | switch (status) { |
1084 | case ZEBRA_PTM_STATUS_DOWN: | |
1085 | return "fail"; | |
1086 | case ZEBRA_PTM_STATUS_UP: | |
1087 | return "pass"; | |
1088 | case ZEBRA_PTM_STATUS_UNKNOWN: | |
1089 | default: | |
1090 | return "n/a"; | |
1091 | } | |
950bd436 | 1092 | } |
1093 | ||
c15dc24f RW |
1094 | void zebra_ptm_show_status(struct vty *vty, json_object *json, |
1095 | struct interface *ifp) | |
950bd436 | 1096 | { |
c15dc24f RW |
1097 | const char *status; |
1098 | ||
1099 | if (ifp->ptm_enable) | |
1100 | status = zebra_ptm_get_status_str(ifp->ptm_status); | |
1101 | else | |
1102 | status = "disabled"; | |
1103 | ||
1104 | if (json) | |
1105 | json_object_string_add(json, "ptmStatus", status); | |
1106 | else | |
1107 | vty_out(vty, " PTM status: %s\n", status); | |
950bd436 | 1108 | } |
1109 | ||
d62a17ae | 1110 | void zebra_ptm_send_status_req(void) |
950bd436 | 1111 | { |
d62a17ae | 1112 | void *out_ctxt; |
1113 | int len = ZEBRA_PTM_SEND_MAX_SOCKBUF; | |
1114 | ||
1115 | if (ptm_cb.ptm_enable) { | |
1116 | ptm_lib_init_msg(ptm_hdl, 0, PTMLIB_MSG_TYPE_CMD, NULL, | |
1117 | &out_ctxt); | |
1118 | ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_CMD_STR, | |
1119 | ZEBRA_PTM_GET_STATUS_CMD); | |
1120 | ptm_lib_complete_msg(ptm_hdl, out_ctxt, ptm_cb.out_data, &len); | |
1121 | ||
1122 | zebra_ptm_send_message(ptm_cb.out_data, len); | |
1123 | } | |
950bd436 | 1124 | } |
1125 | ||
d62a17ae | 1126 | void zebra_ptm_reset_status(int ptm_disable) |
950bd436 | 1127 | { |
d62a17ae | 1128 | struct vrf *vrf; |
d62a17ae | 1129 | struct interface *ifp; |
1130 | int send_linkup; | |
1131 | ||
a2addae8 | 1132 | RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) |
451fda4f | 1133 | FOR_ALL_INTERFACES (vrf, ifp) { |
a2addae8 RW |
1134 | send_linkup = 0; |
1135 | if (ifp->ptm_enable) { | |
1136 | if (!if_is_operative(ifp)) | |
1137 | send_linkup = 1; | |
1138 | ||
1139 | if (ptm_disable) | |
1140 | ifp->ptm_enable = | |
1141 | ZEBRA_IF_PTM_ENABLE_OFF; | |
1142 | ifp->ptm_status = ZEBRA_PTM_STATUS_UNKNOWN; | |
1143 | ||
1144 | if (if_is_operative(ifp) && send_linkup) { | |
1145 | if (IS_ZEBRA_DEBUG_EVENT) | |
1146 | zlog_debug( | |
1147 | "%s: Bringing up interface %s", | |
1148 | __func__, ifp->name); | |
8b48cdb9 | 1149 | if_up(ifp, true); |
a2addae8 | 1150 | } |
d62a17ae | 1151 | } |
1152 | } | |
950bd436 | 1153 | } |
986aa00f | 1154 | |
d62a17ae | 1155 | void zebra_ptm_if_init(struct zebra_if *zebra_ifp) |
986aa00f | 1156 | { |
d62a17ae | 1157 | zebra_ifp->ptm_enable = ZEBRA_IF_PTM_ENABLE_UNSPEC; |
986aa00f | 1158 | } |
1159 | ||
d62a17ae | 1160 | void zebra_ptm_if_set_ptm_state(struct interface *ifp, |
1161 | struct zebra_if *zebra_ifp) | |
986aa00f | 1162 | { |
d62a17ae | 1163 | if (zebra_ifp && zebra_ifp->ptm_enable != ZEBRA_IF_PTM_ENABLE_UNSPEC) |
1164 | ifp->ptm_enable = zebra_ifp->ptm_enable; | |
986aa00f | 1165 | } |
1166 | ||
d62a17ae | 1167 | void zebra_ptm_if_write(struct vty *vty, struct zebra_if *zebra_ifp) |
986aa00f | 1168 | { |
d62a17ae | 1169 | if (zebra_ifp->ptm_enable == ZEBRA_IF_PTM_ENABLE_OFF) |
1170 | vty_out(vty, " no ptm-enable\n"); | |
986aa00f | 1171 | } |
d3af6147 RZ |
1172 | |
1173 | #else /* HAVE_BFDD */ | |
1174 | ||
d3af6147 RZ |
1175 | /* |
1176 | * Data structures. | |
1177 | */ | |
1178 | struct ptm_process { | |
1179 | struct zserv *pp_zs; | |
1180 | pid_t pp_pid; | |
1181 | ||
1182 | TAILQ_ENTRY(ptm_process) pp_entry; | |
1183 | }; | |
1184 | TAILQ_HEAD(ppqueue, ptm_process) ppqueue; | |
1185 | ||
1186 | DEFINE_MTYPE_STATIC(ZEBRA, ZEBRA_PTM_BFD_PROCESS, | |
1187 | "PTM BFD process registration table."); | |
1188 | ||
1189 | /* | |
1190 | * Prototypes. | |
1191 | */ | |
1192 | static struct ptm_process *pp_new(pid_t pid, struct zserv *zs); | |
1193 | static struct ptm_process *pp_lookup_byzs(struct zserv *zs); | |
1194 | static void pp_free(struct ptm_process *pp); | |
788378fe | 1195 | static void pp_free_all(void); |
d3af6147 RZ |
1196 | |
1197 | static void zebra_ptm_send_bfdd(struct stream *msg); | |
1198 | static void zebra_ptm_send_clients(struct stream *msg); | |
1199 | static int _zebra_ptm_bfd_client_deregister(struct zserv *zs); | |
45b000d0 PG |
1200 | static void _zebra_ptm_reroute(struct zserv *zs, struct zebra_vrf *zvrf, |
1201 | struct stream *msg, uint32_t command); | |
d3af6147 RZ |
1202 | |
1203 | ||
1204 | /* | |
1205 | * Process PID registration. | |
1206 | */ | |
1207 | static struct ptm_process *pp_new(pid_t pid, struct zserv *zs) | |
1208 | { | |
1209 | struct ptm_process *pp; | |
1210 | ||
1211 | #ifdef PTM_DEBUG | |
1212 | /* Sanity check: more than one client can't have the same PID. */ | |
1213 | TAILQ_FOREACH(pp, &ppqueue, pp_entry) { | |
1214 | if (pp->pp_pid == pid && pp->pp_zs != zs) | |
1215 | zlog_err("%s:%d pid and client pointer doesn't match", | |
1216 | __FILE__, __LINE__); | |
1217 | } | |
1218 | #endif /* PTM_DEBUG */ | |
1219 | ||
1220 | /* Lookup for duplicates. */ | |
1221 | pp = pp_lookup_byzs(zs); | |
1222 | if (pp != NULL) | |
1223 | return pp; | |
1224 | ||
1225 | /* Allocate and register new process. */ | |
1226 | pp = XCALLOC(MTYPE_ZEBRA_PTM_BFD_PROCESS, sizeof(*pp)); | |
d3af6147 RZ |
1227 | |
1228 | pp->pp_pid = pid; | |
1229 | pp->pp_zs = zs; | |
1230 | TAILQ_INSERT_HEAD(&ppqueue, pp, pp_entry); | |
1231 | ||
1232 | return pp; | |
1233 | } | |
1234 | ||
1235 | static struct ptm_process *pp_lookup_byzs(struct zserv *zs) | |
1236 | { | |
1237 | struct ptm_process *pp; | |
1238 | ||
1239 | TAILQ_FOREACH(pp, &ppqueue, pp_entry) { | |
1240 | if (pp->pp_zs != zs) | |
1241 | continue; | |
1242 | ||
1243 | break; | |
1244 | } | |
1245 | ||
1246 | return pp; | |
1247 | } | |
1248 | ||
1249 | static void pp_free(struct ptm_process *pp) | |
1250 | { | |
1251 | if (pp == NULL) | |
1252 | return; | |
1253 | ||
1254 | TAILQ_REMOVE(&ppqueue, pp, pp_entry); | |
1255 | XFREE(MTYPE_ZEBRA_PTM_BFD_PROCESS, pp); | |
1256 | } | |
1257 | ||
788378fe RZ |
1258 | static void pp_free_all(void) |
1259 | { | |
1260 | struct ptm_process *pp; | |
1261 | ||
1262 | while (!TAILQ_EMPTY(&ppqueue)) { | |
1263 | pp = TAILQ_FIRST(&ppqueue); | |
1264 | pp_free(pp); | |
1265 | } | |
1266 | } | |
1267 | ||
d3af6147 RZ |
1268 | |
1269 | /* | |
1270 | * Use the FRR's internal daemon implementation. | |
1271 | */ | |
1272 | static void zebra_ptm_send_bfdd(struct stream *msg) | |
1273 | { | |
1274 | struct listnode *node; | |
1275 | struct zserv *client; | |
1276 | struct stream *msgc; | |
1277 | ||
1278 | /* Create copy for replication. */ | |
1279 | msgc = stream_dup(msg); | |
d3af6147 RZ |
1280 | |
1281 | /* Send message to all running BFDd daemons. */ | |
161e9ab7 | 1282 | for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client)) { |
d3af6147 RZ |
1283 | if (client->proto != ZEBRA_ROUTE_BFD) |
1284 | continue; | |
1285 | ||
1286 | zserv_send_message(client, msg); | |
1287 | ||
1288 | /* Allocate more messages. */ | |
1289 | msg = stream_dup(msgc); | |
d3af6147 RZ |
1290 | } |
1291 | ||
1292 | stream_free(msgc); | |
011a7139 | 1293 | stream_free(msg); |
d3af6147 RZ |
1294 | } |
1295 | ||
1296 | static void zebra_ptm_send_clients(struct stream *msg) | |
1297 | { | |
1298 | struct listnode *node; | |
1299 | struct zserv *client; | |
1300 | struct stream *msgc; | |
1301 | ||
1302 | /* Create copy for replication. */ | |
1303 | msgc = stream_dup(msg); | |
d3af6147 RZ |
1304 | |
1305 | /* Send message to all running client daemons. */ | |
161e9ab7 | 1306 | for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, node, client)) { |
4943f243 | 1307 | if (!IS_BFD_ENABLED_PROTOCOL(client->proto)) |
d3af6147 | 1308 | continue; |
d3af6147 RZ |
1309 | |
1310 | zserv_send_message(client, msg); | |
1311 | ||
1312 | /* Allocate more messages. */ | |
1313 | msg = stream_dup(msgc); | |
d3af6147 RZ |
1314 | } |
1315 | ||
1316 | stream_free(msgc); | |
011a7139 | 1317 | stream_free(msg); |
d3af6147 RZ |
1318 | } |
1319 | ||
1320 | static int _zebra_ptm_bfd_client_deregister(struct zserv *zs) | |
1321 | { | |
1322 | struct stream *msg; | |
1323 | struct ptm_process *pp; | |
1324 | ||
4943f243 | 1325 | if (!IS_BFD_ENABLED_PROTOCOL(zs->proto)) |
d3af6147 RZ |
1326 | return 0; |
1327 | ||
d3af6147 RZ |
1328 | /* Find daemon pid by zebra connection pointer. */ |
1329 | pp = pp_lookup_byzs(zs); | |
1330 | if (pp == NULL) { | |
1331 | zlog_err("%s:%d failed to find process pid registration", | |
1332 | __FILE__, __LINE__); | |
1333 | return -1; | |
1334 | } | |
1335 | ||
1336 | /* Generate, send message and free() daemon related data. */ | |
1337 | msg = stream_new(ZEBRA_MAX_PACKET_SIZ); | |
1338 | if (msg == NULL) { | |
9df414fe | 1339 | zlog_debug("%s: not enough memory", __func__); |
d3af6147 RZ |
1340 | return 0; |
1341 | } | |
1342 | ||
1343 | /* | |
5498a9f1 | 1344 | * The message type will be ZEBRA_BFD_DEST_REPLAY so we can use only |
d3af6147 RZ |
1345 | * one callback at the `bfdd` side, however the real command |
1346 | * number will be included right after the zebra header. | |
1347 | */ | |
1348 | zclient_create_header(msg, ZEBRA_BFD_DEST_REPLAY, 0); | |
1349 | stream_putl(msg, ZEBRA_BFD_CLIENT_DEREGISTER); | |
1350 | ||
1351 | /* Put process PID. */ | |
1352 | stream_putl(msg, pp->pp_pid); | |
1353 | ||
1354 | /* Update the data pointers. */ | |
1355 | stream_putw_at(msg, 0, stream_get_endp(msg)); | |
1356 | ||
1357 | zebra_ptm_send_bfdd(msg); | |
1358 | ||
1359 | pp_free(pp); | |
1360 | ||
1361 | return 0; | |
1362 | } | |
1363 | ||
1364 | void zebra_ptm_init(void) | |
1365 | { | |
1366 | /* Initialize the ptm process information list. */ | |
1367 | TAILQ_INIT(&ppqueue); | |
1368 | ||
1369 | /* | |
1370 | * Send deregistration messages to BFD daemon when some other | |
1371 | * daemon closes. This will help avoid sending daemons | |
1372 | * unnecessary notification messages. | |
1373 | */ | |
1374 | hook_register(zserv_client_close, _zebra_ptm_bfd_client_deregister); | |
1375 | } | |
1376 | ||
788378fe RZ |
1377 | void zebra_ptm_finish(void) |
1378 | { | |
1379 | /* Remove the client disconnect hook and free all memory. */ | |
1380 | hook_unregister(zserv_client_close, _zebra_ptm_bfd_client_deregister); | |
1381 | pp_free_all(); | |
1382 | } | |
1383 | ||
d3af6147 RZ |
1384 | |
1385 | /* | |
1386 | * Message handling. | |
1387 | */ | |
45b000d0 PG |
1388 | static void _zebra_ptm_reroute(struct zserv *zs, struct zebra_vrf *zvrf, |
1389 | struct stream *msg, uint32_t command) | |
d3af6147 RZ |
1390 | { |
1391 | struct stream *msgc; | |
ab12ca85 | 1392 | char buf[ZEBRA_MAX_PACKET_SIZ]; |
d3af6147 RZ |
1393 | pid_t ppid; |
1394 | ||
ab12ca85 | 1395 | /* Create BFD header */ |
d3af6147 | 1396 | msgc = stream_new(ZEBRA_MAX_PACKET_SIZ); |
45b000d0 | 1397 | zclient_create_header(msgc, ZEBRA_BFD_DEST_REPLAY, zvrf->vrf->vrf_id); |
d3af6147 RZ |
1398 | stream_putl(msgc, command); |
1399 | ||
ab12ca85 QY |
1400 | if (STREAM_READABLE(msg) > STREAM_WRITEABLE(msgc)) { |
1401 | zlog_warn("Cannot fit extended BFD header plus original message contents into ZAPI packet; dropping message"); | |
1402 | goto stream_failure; | |
1403 | } | |
1404 | ||
1405 | /* Copy original message, excluding header, into new message */ | |
1406 | stream_get_from(buf, msg, stream_get_getp(msg), STREAM_READABLE(msg)); | |
1407 | stream_put(msgc, buf, STREAM_READABLE(msg)); | |
1408 | ||
1409 | /* Update length field */ | |
1410 | stream_putw_at(msgc, 0, STREAM_READABLE(msgc)); | |
d3af6147 RZ |
1411 | |
1412 | zebra_ptm_send_bfdd(msgc); | |
011a7139 | 1413 | msgc = NULL; |
d3af6147 RZ |
1414 | |
1415 | /* Registrate process PID for shutdown hook. */ | |
1416 | STREAM_GETL(msg, ppid); | |
1417 | pp_new(ppid, zs); | |
1418 | ||
1419 | return; | |
1420 | ||
1421 | stream_failure: | |
011a7139 QY |
1422 | if (msgc) |
1423 | stream_free(msgc); | |
d3af6147 RZ |
1424 | zlog_err("%s:%d failed to registrate client pid", __FILE__, __LINE__); |
1425 | } | |
1426 | ||
1427 | void zebra_ptm_bfd_dst_register(ZAPI_HANDLER_ARGS) | |
1428 | { | |
1429 | if (IS_ZEBRA_DEBUG_EVENT) | |
1430 | zlog_debug("bfd_dst_register msg from client %s: length=%d", | |
1431 | zebra_route_string(client->proto), hdr->length); | |
1432 | ||
45b000d0 | 1433 | _zebra_ptm_reroute(client, zvrf, msg, ZEBRA_BFD_DEST_REGISTER); |
d3af6147 RZ |
1434 | } |
1435 | ||
1436 | void zebra_ptm_bfd_dst_deregister(ZAPI_HANDLER_ARGS) | |
1437 | { | |
1438 | if (IS_ZEBRA_DEBUG_EVENT) | |
1439 | zlog_debug("bfd_dst_deregister msg from client %s: length=%d", | |
1440 | zebra_route_string(client->proto), hdr->length); | |
1441 | ||
45b000d0 | 1442 | _zebra_ptm_reroute(client, zvrf, msg, ZEBRA_BFD_DEST_DEREGISTER); |
d3af6147 RZ |
1443 | } |
1444 | ||
1445 | void zebra_ptm_bfd_client_register(ZAPI_HANDLER_ARGS) | |
1446 | { | |
1447 | if (IS_ZEBRA_DEBUG_EVENT) | |
1448 | zlog_debug("bfd_client_register msg from client %s: length=%d", | |
1449 | zebra_route_string(client->proto), hdr->length); | |
1450 | ||
45b000d0 | 1451 | _zebra_ptm_reroute(client, zvrf, msg, ZEBRA_BFD_CLIENT_REGISTER); |
d3af6147 RZ |
1452 | } |
1453 | ||
1454 | void zebra_ptm_bfd_dst_replay(ZAPI_HANDLER_ARGS) | |
1455 | { | |
1456 | struct stream *msgc; | |
1457 | size_t zmsglen, zhdrlen; | |
971532e2 | 1458 | uint32_t cmd; |
d3af6147 RZ |
1459 | |
1460 | /* | |
1461 | * NOTE: | |
1462 | * Replay messages with HAVE_BFDD are meant to be replayed to | |
1463 | * the client daemons. These messages are composed and | |
1464 | * originated from the `bfdd` daemon. | |
1465 | */ | |
1466 | if (IS_ZEBRA_DEBUG_EVENT) | |
1467 | zlog_debug("bfd_dst_update msg from client %s: length=%d", | |
1468 | zebra_route_string(client->proto), hdr->length); | |
1469 | ||
971532e2 RZ |
1470 | /* |
1471 | * Client messages must be re-routed, otherwise do the `bfdd` | |
1472 | * special treatment. | |
1473 | */ | |
1474 | if (client->proto != ZEBRA_ROUTE_BFD) { | |
45b000d0 | 1475 | _zebra_ptm_reroute(client, zvrf, msg, ZEBRA_BFD_DEST_REPLAY); |
971532e2 RZ |
1476 | return; |
1477 | } | |
1478 | ||
1479 | /* Figure out if this is an DEST_UPDATE or DEST_REPLAY. */ | |
1480 | if (stream_getl2(msg, &cmd) == false) { | |
1481 | zlog_err("%s: expected at least 4 bytes (command)", __func__); | |
1482 | return; | |
1483 | } | |
1484 | ||
d3af6147 RZ |
1485 | /* |
1486 | * Don't modify message in the zebra API. In order to do that we | |
1487 | * need to allocate a new message stream and copy the message | |
1488 | * provided by zebra. | |
1489 | */ | |
1490 | msgc = stream_new(ZEBRA_MAX_PACKET_SIZ); | |
1491 | if (msgc == NULL) { | |
9df414fe | 1492 | zlog_debug("%s: not enough memory", __func__); |
d3af6147 RZ |
1493 | return; |
1494 | } | |
1495 | ||
1496 | /* Calculate our header size plus the message contents. */ | |
971532e2 RZ |
1497 | if (cmd != ZEBRA_BFD_DEST_REPLAY) { |
1498 | zhdrlen = ZEBRA_HEADER_SIZE; | |
1499 | zmsglen = msg->endp - msg->getp; | |
1500 | memcpy(msgc->data + zhdrlen, msg->data + msg->getp, zmsglen); | |
d3af6147 | 1501 | |
971532e2 RZ |
1502 | zclient_create_header(msgc, cmd, zvrf_id(zvrf)); |
1503 | ||
1504 | msgc->getp = 0; | |
1505 | msgc->endp = zhdrlen + zmsglen; | |
1506 | } else | |
1507 | zclient_create_header(msgc, cmd, zvrf_id(zvrf)); | |
d3af6147 RZ |
1508 | |
1509 | /* Update the data pointers. */ | |
d3af6147 RZ |
1510 | stream_putw_at(msgc, 0, stream_get_endp(msgc)); |
1511 | ||
1512 | zebra_ptm_send_clients(msgc); | |
1513 | } | |
1514 | ||
1515 | /* | |
1516 | * Unused functions. | |
1517 | */ | |
d3af6147 RZ |
1518 | void zebra_ptm_if_init(struct zebra_if *zifp __attribute__((__unused__))) |
1519 | { | |
1520 | /* NOTHING */ | |
1521 | } | |
1522 | ||
1523 | int zebra_ptm_get_enable_state(void) | |
1524 | { | |
5efdb801 | 1525 | return 0; |
d3af6147 RZ |
1526 | } |
1527 | ||
1528 | void zebra_ptm_show_status(struct vty *vty __attribute__((__unused__)), | |
c15dc24f | 1529 | json_object *json __attribute__((__unused__)), |
d3af6147 RZ |
1530 | struct interface *ifp __attribute__((__unused__))) |
1531 | { | |
1532 | /* NOTHING */ | |
1533 | } | |
1534 | ||
1535 | void zebra_ptm_write(struct vty *vty __attribute__((__unused__))) | |
1536 | { | |
1537 | /* NOTHING */ | |
1538 | } | |
1539 | ||
1540 | void zebra_ptm_if_write(struct vty *vty __attribute__((__unused__)), | |
1541 | struct zebra_if *zifp __attribute__((__unused__))) | |
1542 | { | |
1543 | /* NOTHING */ | |
1544 | } | |
1545 | void zebra_ptm_if_set_ptm_state(struct interface *i __attribute__((__unused__)), | |
1546 | struct zebra_if *zi __attribute__((__unused__))) | |
1547 | { | |
1548 | /* NOTHING */ | |
1549 | } | |
1550 | ||
1551 | #endif /* HAVE_BFDD */ |