]>
Commit | Line | Data |
---|---|---|
b97bf3fd PL |
1 | /* |
2 | * net/tipc/config.c: TIPC configuration management code | |
3 | * | |
9da1c8b6 | 4 | * Copyright (c) 2003-2006, Ericsson AB |
b97bf3fd | 5 | * Copyright (c) 2004-2005, Wind River Systems |
b97bf3fd PL |
6 | * All rights reserved. |
7 | * | |
9ea1fd3c | 8 | * Redistribution and use in source and binary forms, with or without |
b97bf3fd PL |
9 | * modification, are permitted provided that the following conditions are met: |
10 | * | |
9ea1fd3c PL |
11 | * 1. Redistributions of source code must retain the above copyright |
12 | * notice, this list of conditions and the following disclaimer. | |
13 | * 2. Redistributions in binary form must reproduce the above copyright | |
14 | * notice, this list of conditions and the following disclaimer in the | |
15 | * documentation and/or other materials provided with the distribution. | |
16 | * 3. Neither the names of the copyright holders nor the names of its | |
17 | * contributors may be used to endorse or promote products derived from | |
18 | * this software without specific prior written permission. | |
b97bf3fd | 19 | * |
9ea1fd3c PL |
20 | * Alternatively, this software may be distributed under the terms of the |
21 | * GNU General Public License ("GPL") version 2 as published by the Free | |
22 | * Software Foundation. | |
23 | * | |
24 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
25 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | |
28 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
29 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
30 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
31 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
32 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
33 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
b97bf3fd PL |
34 | * POSSIBILITY OF SUCH DAMAGE. |
35 | */ | |
36 | ||
37 | #include "core.h" | |
38 | #include "dbg.h" | |
39 | #include "bearer.h" | |
40 | #include "port.h" | |
41 | #include "link.h" | |
42 | #include "zone.h" | |
43 | #include "addr.h" | |
44 | #include "name_table.h" | |
45 | #include "node.h" | |
46 | #include "config.h" | |
47 | #include "discover.h" | |
48 | ||
49 | struct subscr_data { | |
50 | char usr_handle[8]; | |
51 | u32 domain; | |
52 | u32 port_ref; | |
53 | struct list_head subd_list; | |
54 | }; | |
55 | ||
56 | struct manager { | |
57 | u32 user_ref; | |
58 | u32 port_ref; | |
59 | u32 subscr_ref; | |
60 | u32 link_subscriptions; | |
61 | struct list_head link_subscribers; | |
62 | }; | |
63 | ||
64 | static struct manager mng = { 0}; | |
65 | ||
66 | static spinlock_t config_lock = SPIN_LOCK_UNLOCKED; | |
67 | ||
68 | static const void *req_tlv_area; /* request message TLV area */ | |
69 | static int req_tlv_space; /* request message TLV area size */ | |
70 | static int rep_headroom; /* reply message headroom to use */ | |
71 | ||
72 | ||
73 | void cfg_link_event(u32 addr, char *name, int up) | |
74 | { | |
75 | /* TIPC DOESN'T HANDLE LINK EVENT SUBSCRIPTIONS AT THE MOMENT */ | |
76 | } | |
77 | ||
78 | ||
79 | struct sk_buff *cfg_reply_alloc(int payload_size) | |
80 | { | |
81 | struct sk_buff *buf; | |
82 | ||
83 | buf = alloc_skb(rep_headroom + payload_size, GFP_ATOMIC); | |
84 | if (buf) | |
85 | skb_reserve(buf, rep_headroom); | |
86 | return buf; | |
87 | } | |
88 | ||
89 | int cfg_append_tlv(struct sk_buff *buf, int tlv_type, | |
90 | void *tlv_data, int tlv_data_size) | |
91 | { | |
92 | struct tlv_desc *tlv = (struct tlv_desc *)buf->tail; | |
93 | int new_tlv_space = TLV_SPACE(tlv_data_size); | |
94 | ||
95 | if (skb_tailroom(buf) < new_tlv_space) { | |
96 | dbg("cfg_append_tlv unable to append TLV\n"); | |
97 | return 0; | |
98 | } | |
99 | skb_put(buf, new_tlv_space); | |
100 | tlv->tlv_type = htons(tlv_type); | |
101 | tlv->tlv_len = htons(TLV_LENGTH(tlv_data_size)); | |
102 | if (tlv_data_size && tlv_data) | |
103 | memcpy(TLV_DATA(tlv), tlv_data, tlv_data_size); | |
104 | return 1; | |
105 | } | |
106 | ||
107 | struct sk_buff *cfg_reply_unsigned_type(u16 tlv_type, u32 value) | |
108 | { | |
109 | struct sk_buff *buf; | |
110 | u32 value_net; | |
111 | ||
112 | buf = cfg_reply_alloc(TLV_SPACE(sizeof(value))); | |
113 | if (buf) { | |
114 | value_net = htonl(value); | |
115 | cfg_append_tlv(buf, tlv_type, &value_net, | |
116 | sizeof(value_net)); | |
117 | } | |
118 | return buf; | |
119 | } | |
120 | ||
121 | struct sk_buff *cfg_reply_string_type(u16 tlv_type, char *string) | |
122 | { | |
123 | struct sk_buff *buf; | |
124 | int string_len = strlen(string) + 1; | |
125 | ||
126 | buf = cfg_reply_alloc(TLV_SPACE(string_len)); | |
127 | if (buf) | |
128 | cfg_append_tlv(buf, tlv_type, string, string_len); | |
129 | return buf; | |
130 | } | |
131 | ||
132 | ||
133 | ||
134 | ||
135 | #if 0 | |
136 | ||
137 | /* Now obsolete code for handling commands not yet implemented the new way */ | |
138 | ||
139 | int tipc_cfg_cmd(const struct tipc_cmd_msg * msg, | |
140 | char *data, | |
141 | u32 sz, | |
142 | u32 *ret_size, | |
143 | struct tipc_portid *orig) | |
144 | { | |
145 | int rv = -EINVAL; | |
146 | u32 cmd = msg->cmd; | |
147 | ||
148 | *ret_size = 0; | |
149 | switch (cmd) { | |
150 | case TIPC_REMOVE_LINK: | |
151 | case TIPC_CMD_BLOCK_LINK: | |
152 | case TIPC_CMD_UNBLOCK_LINK: | |
153 | if (!cfg_check_connection(orig)) | |
154 | rv = link_control(msg->argv.link_name, msg->cmd, 0); | |
155 | break; | |
156 | case TIPC_ESTABLISH: | |
157 | { | |
158 | int connected; | |
159 | ||
160 | tipc_isconnected(mng.conn_port_ref, &connected); | |
161 | if (connected || !orig) { | |
162 | rv = TIPC_FAILURE; | |
163 | break; | |
164 | } | |
165 | rv = tipc_connect2port(mng.conn_port_ref, orig); | |
166 | if (rv == TIPC_OK) | |
167 | orig = 0; | |
168 | break; | |
169 | } | |
170 | case TIPC_GET_PEER_ADDRESS: | |
171 | *ret_size = link_peer_addr(msg->argv.link_name, data, sz); | |
172 | break; | |
173 | case TIPC_GET_ROUTES: | |
174 | rv = TIPC_OK; | |
175 | break; | |
176 | default: {} | |
177 | } | |
178 | if (*ret_size) | |
179 | rv = TIPC_OK; | |
180 | return rv; | |
181 | } | |
182 | ||
183 | static void cfg_cmd_event(struct tipc_cmd_msg *msg, | |
184 | char *data, | |
185 | u32 sz, | |
186 | struct tipc_portid const *orig) | |
187 | { | |
188 | int rv = -EINVAL; | |
189 | struct tipc_cmd_result_msg rmsg; | |
190 | struct iovec msg_sect[2]; | |
191 | int *arg; | |
192 | ||
193 | msg->cmd = ntohl(msg->cmd); | |
194 | ||
195 | cfg_prepare_res_msg(msg->cmd, msg->usr_handle, rv, &rmsg, msg_sect, | |
196 | data, 0); | |
197 | if (ntohl(msg->magic) != TIPC_MAGIC) | |
198 | goto exit; | |
199 | ||
200 | switch (msg->cmd) { | |
201 | case TIPC_CREATE_LINK: | |
202 | if (!cfg_check_connection(orig)) | |
203 | rv = disc_create_link(&msg->argv.create_link); | |
204 | break; | |
205 | case TIPC_LINK_SUBSCRIBE: | |
206 | { | |
207 | struct subscr_data *sub; | |
208 | ||
209 | if (mng.link_subscriptions > 64) | |
210 | break; | |
211 | sub = (struct subscr_data *)kmalloc(sizeof(*sub), | |
212 | GFP_ATOMIC); | |
213 | if (sub == NULL) { | |
214 | warn("Memory squeeze; dropped remote link subscription\n"); | |
215 | break; | |
216 | } | |
217 | INIT_LIST_HEAD(&sub->subd_list); | |
218 | tipc_createport(mng.user_ref, | |
219 | (void *)sub, | |
220 | TIPC_HIGH_IMPORTANCE, | |
221 | 0, | |
222 | 0, | |
223 | (tipc_conn_shutdown_event)cfg_linksubscr_cancel, | |
224 | 0, | |
225 | 0, | |
226 | (tipc_conn_msg_event)cfg_linksubscr_cancel, | |
227 | 0, | |
228 | &sub->port_ref); | |
229 | if (!sub->port_ref) { | |
230 | kfree(sub); | |
231 | break; | |
232 | } | |
233 | memcpy(sub->usr_handle,msg->usr_handle, | |
234 | sizeof(sub->usr_handle)); | |
235 | sub->domain = msg->argv.domain; | |
236 | list_add_tail(&sub->subd_list, &mng.link_subscribers); | |
237 | tipc_connect2port(sub->port_ref, orig); | |
238 | rmsg.retval = TIPC_OK; | |
239 | tipc_send(sub->port_ref, 2u, msg_sect); | |
240 | mng.link_subscriptions++; | |
241 | return; | |
242 | } | |
243 | default: | |
244 | rv = tipc_cfg_cmd(msg, data, sz, (u32 *)&msg_sect[1].iov_len, orig); | |
245 | } | |
246 | exit: | |
247 | rmsg.result_len = htonl(msg_sect[1].iov_len); | |
248 | rmsg.retval = htonl(rv); | |
249 | cfg_respond(msg_sect, 2u, orig); | |
250 | } | |
251 | #endif | |
252 | ||
253 | static struct sk_buff *cfg_enable_bearer(void) | |
254 | { | |
255 | struct tipc_bearer_config *args; | |
256 | ||
257 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_BEARER_CONFIG)) | |
258 | return cfg_reply_error_string(TIPC_CFG_TLV_ERROR); | |
259 | ||
260 | args = (struct tipc_bearer_config *)TLV_DATA(req_tlv_area); | |
261 | if (tipc_enable_bearer(args->name, | |
262 | ntohl(args->detect_scope), | |
263 | ntohl(args->priority))) | |
264 | return cfg_reply_error_string("unable to enable bearer"); | |
265 | ||
266 | return cfg_reply_none(); | |
267 | } | |
268 | ||
269 | static struct sk_buff *cfg_disable_bearer(void) | |
270 | { | |
271 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_BEARER_NAME)) | |
272 | return cfg_reply_error_string(TIPC_CFG_TLV_ERROR); | |
273 | ||
274 | if (tipc_disable_bearer((char *)TLV_DATA(req_tlv_area))) | |
275 | return cfg_reply_error_string("unable to disable bearer"); | |
276 | ||
277 | return cfg_reply_none(); | |
278 | } | |
279 | ||
280 | static struct sk_buff *cfg_set_own_addr(void) | |
281 | { | |
282 | u32 addr; | |
283 | ||
284 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_NET_ADDR)) | |
285 | return cfg_reply_error_string(TIPC_CFG_TLV_ERROR); | |
286 | ||
287 | addr = *(u32 *)TLV_DATA(req_tlv_area); | |
288 | addr = ntohl(addr); | |
289 | if (addr == tipc_own_addr) | |
290 | return cfg_reply_none(); | |
291 | if (!addr_node_valid(addr)) | |
292 | return cfg_reply_error_string(TIPC_CFG_INVALID_VALUE | |
293 | " (node address)"); | |
294 | if (tipc_own_addr) | |
295 | return cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED | |
296 | " (cannot change node address once assigned)"); | |
297 | ||
298 | spin_unlock_bh(&config_lock); | |
299 | stop_net(); | |
300 | tipc_own_addr = addr; | |
301 | start_net(); | |
302 | spin_lock_bh(&config_lock); | |
303 | return cfg_reply_none(); | |
304 | } | |
305 | ||
306 | static struct sk_buff *cfg_set_remote_mng(void) | |
307 | { | |
308 | u32 value; | |
309 | ||
310 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
311 | return cfg_reply_error_string(TIPC_CFG_TLV_ERROR); | |
312 | ||
313 | value = *(u32 *)TLV_DATA(req_tlv_area); | |
314 | value = ntohl(value); | |
315 | tipc_remote_management = (value != 0); | |
316 | return cfg_reply_none(); | |
317 | } | |
318 | ||
319 | static struct sk_buff *cfg_set_max_publications(void) | |
320 | { | |
321 | u32 value; | |
322 | ||
323 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
324 | return cfg_reply_error_string(TIPC_CFG_TLV_ERROR); | |
325 | ||
326 | value = *(u32 *)TLV_DATA(req_tlv_area); | |
327 | value = ntohl(value); | |
328 | if (value != delimit(value, 1, 65535)) | |
329 | return cfg_reply_error_string(TIPC_CFG_INVALID_VALUE | |
330 | " (max publications must be 1-65535)"); | |
331 | tipc_max_publications = value; | |
332 | return cfg_reply_none(); | |
333 | } | |
334 | ||
335 | static struct sk_buff *cfg_set_max_subscriptions(void) | |
336 | { | |
337 | u32 value; | |
338 | ||
339 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
340 | return cfg_reply_error_string(TIPC_CFG_TLV_ERROR); | |
341 | ||
342 | value = *(u32 *)TLV_DATA(req_tlv_area); | |
343 | value = ntohl(value); | |
344 | if (value != delimit(value, 1, 65535)) | |
345 | return cfg_reply_error_string(TIPC_CFG_INVALID_VALUE | |
346 | " (max subscriptions must be 1-65535"); | |
347 | tipc_max_subscriptions = value; | |
348 | return cfg_reply_none(); | |
349 | } | |
350 | ||
351 | static struct sk_buff *cfg_set_max_ports(void) | |
352 | { | |
353 | int orig_mode; | |
354 | u32 value; | |
355 | ||
356 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
357 | return cfg_reply_error_string(TIPC_CFG_TLV_ERROR); | |
358 | value = *(u32 *)TLV_DATA(req_tlv_area); | |
359 | value = ntohl(value); | |
360 | if (value != delimit(value, 127, 65535)) | |
361 | return cfg_reply_error_string(TIPC_CFG_INVALID_VALUE | |
362 | " (max ports must be 127-65535)"); | |
363 | ||
364 | if (value == tipc_max_ports) | |
365 | return cfg_reply_none(); | |
366 | ||
367 | if (atomic_read(&tipc_user_count) > 2) | |
368 | return cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED | |
369 | " (cannot change max ports while TIPC users exist)"); | |
370 | ||
371 | spin_unlock_bh(&config_lock); | |
372 | orig_mode = tipc_get_mode(); | |
373 | if (orig_mode == TIPC_NET_MODE) | |
374 | stop_net(); | |
375 | stop_core(); | |
376 | tipc_max_ports = value; | |
377 | start_core(); | |
378 | if (orig_mode == TIPC_NET_MODE) | |
379 | start_net(); | |
380 | spin_lock_bh(&config_lock); | |
381 | return cfg_reply_none(); | |
382 | } | |
383 | ||
384 | static struct sk_buff *set_net_max(int value, int *parameter) | |
385 | { | |
386 | int orig_mode; | |
387 | ||
388 | if (value != *parameter) { | |
389 | orig_mode = tipc_get_mode(); | |
390 | if (orig_mode == TIPC_NET_MODE) | |
391 | stop_net(); | |
392 | *parameter = value; | |
393 | if (orig_mode == TIPC_NET_MODE) | |
394 | start_net(); | |
395 | } | |
396 | ||
397 | return cfg_reply_none(); | |
398 | } | |
399 | ||
400 | static struct sk_buff *cfg_set_max_zones(void) | |
401 | { | |
402 | u32 value; | |
403 | ||
404 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
405 | return cfg_reply_error_string(TIPC_CFG_TLV_ERROR); | |
406 | value = *(u32 *)TLV_DATA(req_tlv_area); | |
407 | value = ntohl(value); | |
408 | if (value != delimit(value, 1, 255)) | |
409 | return cfg_reply_error_string(TIPC_CFG_INVALID_VALUE | |
410 | " (max zones must be 1-255)"); | |
411 | return set_net_max(value, &tipc_max_zones); | |
412 | } | |
413 | ||
414 | static struct sk_buff *cfg_set_max_clusters(void) | |
415 | { | |
416 | u32 value; | |
417 | ||
418 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
419 | return cfg_reply_error_string(TIPC_CFG_TLV_ERROR); | |
420 | value = *(u32 *)TLV_DATA(req_tlv_area); | |
421 | value = ntohl(value); | |
422 | if (value != 1) | |
423 | return cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED | |
424 | " (max clusters fixed at 1)"); | |
425 | return cfg_reply_none(); | |
426 | } | |
427 | ||
428 | static struct sk_buff *cfg_set_max_nodes(void) | |
429 | { | |
430 | u32 value; | |
431 | ||
432 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
433 | return cfg_reply_error_string(TIPC_CFG_TLV_ERROR); | |
434 | value = *(u32 *)TLV_DATA(req_tlv_area); | |
435 | value = ntohl(value); | |
436 | if (value != delimit(value, 8, 2047)) | |
437 | return cfg_reply_error_string(TIPC_CFG_INVALID_VALUE | |
438 | " (max nodes must be 8-2047)"); | |
439 | return set_net_max(value, &tipc_max_nodes); | |
440 | } | |
441 | ||
442 | static struct sk_buff *cfg_set_max_slaves(void) | |
443 | { | |
444 | u32 value; | |
445 | ||
446 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
447 | return cfg_reply_error_string(TIPC_CFG_TLV_ERROR); | |
448 | value = *(u32 *)TLV_DATA(req_tlv_area); | |
449 | value = ntohl(value); | |
450 | if (value != 0) | |
451 | return cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED | |
452 | " (max secondary nodes fixed at 0)"); | |
453 | return cfg_reply_none(); | |
454 | } | |
455 | ||
456 | static struct sk_buff *cfg_set_netid(void) | |
457 | { | |
458 | u32 value; | |
459 | ||
460 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
461 | return cfg_reply_error_string(TIPC_CFG_TLV_ERROR); | |
462 | value = *(u32 *)TLV_DATA(req_tlv_area); | |
463 | value = ntohl(value); | |
464 | if (value != delimit(value, 1, 9999)) | |
465 | return cfg_reply_error_string(TIPC_CFG_INVALID_VALUE | |
466 | " (network id must be 1-9999)"); | |
467 | ||
468 | if (tipc_own_addr) | |
469 | return cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED | |
470 | " (cannot change network id once part of network)"); | |
471 | ||
472 | return set_net_max(value, &tipc_net_id); | |
473 | } | |
474 | ||
475 | struct sk_buff *cfg_do_cmd(u32 orig_node, u16 cmd, const void *request_area, | |
476 | int request_space, int reply_headroom) | |
477 | { | |
478 | struct sk_buff *rep_tlv_buf; | |
479 | ||
480 | spin_lock_bh(&config_lock); | |
481 | ||
482 | /* Save request and reply details in a well-known location */ | |
483 | ||
484 | req_tlv_area = request_area; | |
485 | req_tlv_space = request_space; | |
486 | rep_headroom = reply_headroom; | |
487 | ||
488 | /* Check command authorization */ | |
489 | ||
490 | if (likely(orig_node == tipc_own_addr)) { | |
491 | /* command is permitted */ | |
492 | } else if (cmd >= 0x8000) { | |
493 | rep_tlv_buf = cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED | |
494 | " (cannot be done remotely)"); | |
495 | goto exit; | |
496 | } else if (!tipc_remote_management) { | |
497 | rep_tlv_buf = cfg_reply_error_string(TIPC_CFG_NO_REMOTE); | |
498 | goto exit; | |
499 | } | |
500 | else if (cmd >= 0x4000) { | |
501 | u32 domain = 0; | |
502 | ||
503 | if ((nametbl_translate(TIPC_ZM_SRV, 0, &domain) == 0) || | |
504 | (domain != orig_node)) { | |
505 | rep_tlv_buf = cfg_reply_error_string(TIPC_CFG_NOT_ZONE_MSTR); | |
506 | goto exit; | |
507 | } | |
508 | } | |
509 | ||
510 | /* Call appropriate processing routine */ | |
511 | ||
512 | switch (cmd) { | |
513 | case TIPC_CMD_NOOP: | |
514 | rep_tlv_buf = cfg_reply_none(); | |
515 | break; | |
516 | case TIPC_CMD_GET_NODES: | |
517 | rep_tlv_buf = node_get_nodes(req_tlv_area, req_tlv_space); | |
518 | break; | |
519 | case TIPC_CMD_GET_LINKS: | |
520 | rep_tlv_buf = node_get_links(req_tlv_area, req_tlv_space); | |
521 | break; | |
522 | case TIPC_CMD_SHOW_LINK_STATS: | |
523 | rep_tlv_buf = link_cmd_show_stats(req_tlv_area, req_tlv_space); | |
524 | break; | |
525 | case TIPC_CMD_RESET_LINK_STATS: | |
526 | rep_tlv_buf = link_cmd_reset_stats(req_tlv_area, req_tlv_space); | |
527 | break; | |
528 | case TIPC_CMD_SHOW_NAME_TABLE: | |
529 | rep_tlv_buf = nametbl_get(req_tlv_area, req_tlv_space); | |
530 | break; | |
531 | case TIPC_CMD_GET_BEARER_NAMES: | |
532 | rep_tlv_buf = bearer_get_names(); | |
533 | break; | |
534 | case TIPC_CMD_GET_MEDIA_NAMES: | |
535 | rep_tlv_buf = media_get_names(); | |
536 | break; | |
537 | case TIPC_CMD_SHOW_PORTS: | |
538 | rep_tlv_buf = port_get_ports(); | |
539 | break; | |
540 | #if 0 | |
541 | case TIPC_CMD_SHOW_PORT_STATS: | |
542 | rep_tlv_buf = port_show_stats(req_tlv_area, req_tlv_space); | |
543 | break; | |
544 | case TIPC_CMD_RESET_PORT_STATS: | |
545 | rep_tlv_buf = cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED); | |
546 | break; | |
547 | #endif | |
548 | case TIPC_CMD_SET_LOG_SIZE: | |
549 | rep_tlv_buf = log_resize(req_tlv_area, req_tlv_space); | |
550 | break; | |
551 | case TIPC_CMD_DUMP_LOG: | |
552 | rep_tlv_buf = log_dump(); | |
553 | break; | |
554 | case TIPC_CMD_SET_LINK_TOL: | |
555 | case TIPC_CMD_SET_LINK_PRI: | |
556 | case TIPC_CMD_SET_LINK_WINDOW: | |
557 | rep_tlv_buf = link_cmd_config(req_tlv_area, req_tlv_space, cmd); | |
558 | break; | |
559 | case TIPC_CMD_ENABLE_BEARER: | |
560 | rep_tlv_buf = cfg_enable_bearer(); | |
561 | break; | |
562 | case TIPC_CMD_DISABLE_BEARER: | |
563 | rep_tlv_buf = cfg_disable_bearer(); | |
564 | break; | |
565 | case TIPC_CMD_SET_NODE_ADDR: | |
566 | rep_tlv_buf = cfg_set_own_addr(); | |
567 | break; | |
568 | case TIPC_CMD_SET_REMOTE_MNG: | |
569 | rep_tlv_buf = cfg_set_remote_mng(); | |
570 | break; | |
571 | case TIPC_CMD_SET_MAX_PORTS: | |
572 | rep_tlv_buf = cfg_set_max_ports(); | |
573 | break; | |
574 | case TIPC_CMD_SET_MAX_PUBL: | |
575 | rep_tlv_buf = cfg_set_max_publications(); | |
576 | break; | |
577 | case TIPC_CMD_SET_MAX_SUBSCR: | |
578 | rep_tlv_buf = cfg_set_max_subscriptions(); | |
579 | break; | |
580 | case TIPC_CMD_SET_MAX_ZONES: | |
581 | rep_tlv_buf = cfg_set_max_zones(); | |
582 | break; | |
583 | case TIPC_CMD_SET_MAX_CLUSTERS: | |
584 | rep_tlv_buf = cfg_set_max_clusters(); | |
585 | break; | |
586 | case TIPC_CMD_SET_MAX_NODES: | |
587 | rep_tlv_buf = cfg_set_max_nodes(); | |
588 | break; | |
589 | case TIPC_CMD_SET_MAX_SLAVES: | |
590 | rep_tlv_buf = cfg_set_max_slaves(); | |
591 | break; | |
592 | case TIPC_CMD_SET_NETID: | |
593 | rep_tlv_buf = cfg_set_netid(); | |
594 | break; | |
595 | case TIPC_CMD_GET_REMOTE_MNG: | |
596 | rep_tlv_buf = cfg_reply_unsigned(tipc_remote_management); | |
597 | break; | |
598 | case TIPC_CMD_GET_MAX_PORTS: | |
599 | rep_tlv_buf = cfg_reply_unsigned(tipc_max_ports); | |
600 | break; | |
601 | case TIPC_CMD_GET_MAX_PUBL: | |
602 | rep_tlv_buf = cfg_reply_unsigned(tipc_max_publications); | |
603 | break; | |
604 | case TIPC_CMD_GET_MAX_SUBSCR: | |
605 | rep_tlv_buf = cfg_reply_unsigned(tipc_max_subscriptions); | |
606 | break; | |
607 | case TIPC_CMD_GET_MAX_ZONES: | |
608 | rep_tlv_buf = cfg_reply_unsigned(tipc_max_zones); | |
609 | break; | |
610 | case TIPC_CMD_GET_MAX_CLUSTERS: | |
611 | rep_tlv_buf = cfg_reply_unsigned(tipc_max_clusters); | |
612 | break; | |
613 | case TIPC_CMD_GET_MAX_NODES: | |
614 | rep_tlv_buf = cfg_reply_unsigned(tipc_max_nodes); | |
615 | break; | |
616 | case TIPC_CMD_GET_MAX_SLAVES: | |
617 | rep_tlv_buf = cfg_reply_unsigned(tipc_max_slaves); | |
618 | break; | |
619 | case TIPC_CMD_GET_NETID: | |
620 | rep_tlv_buf = cfg_reply_unsigned(tipc_net_id); | |
621 | break; | |
622 | default: | |
623 | rep_tlv_buf = NULL; | |
624 | break; | |
625 | } | |
626 | ||
627 | /* Return reply buffer */ | |
628 | exit: | |
629 | spin_unlock_bh(&config_lock); | |
630 | return rep_tlv_buf; | |
631 | } | |
632 | ||
633 | static void cfg_named_msg_event(void *userdata, | |
634 | u32 port_ref, | |
635 | struct sk_buff **buf, | |
636 | const unchar *msg, | |
637 | u32 size, | |
638 | u32 importance, | |
639 | struct tipc_portid const *orig, | |
640 | struct tipc_name_seq const *dest) | |
641 | { | |
642 | struct tipc_cfg_msg_hdr *req_hdr; | |
643 | struct tipc_cfg_msg_hdr *rep_hdr; | |
644 | struct sk_buff *rep_buf; | |
645 | ||
646 | /* Validate configuration message header (ignore invalid message) */ | |
647 | ||
648 | req_hdr = (struct tipc_cfg_msg_hdr *)msg; | |
649 | if ((size < sizeof(*req_hdr)) || | |
650 | (size != TCM_ALIGN(ntohl(req_hdr->tcm_len))) || | |
651 | (ntohs(req_hdr->tcm_flags) != TCM_F_REQUEST)) { | |
652 | warn("discarded invalid configuration message\n"); | |
653 | return; | |
654 | } | |
655 | ||
656 | /* Generate reply for request (if can't, return request) */ | |
657 | ||
658 | rep_buf = cfg_do_cmd(orig->node, | |
659 | ntohs(req_hdr->tcm_type), | |
660 | msg + sizeof(*req_hdr), | |
661 | size - sizeof(*req_hdr), | |
662 | BUF_HEADROOM + MAX_H_SIZE + sizeof(*rep_hdr)); | |
663 | if (rep_buf) { | |
664 | skb_push(rep_buf, sizeof(*rep_hdr)); | |
665 | rep_hdr = (struct tipc_cfg_msg_hdr *)rep_buf->data; | |
666 | memcpy(rep_hdr, req_hdr, sizeof(*rep_hdr)); | |
667 | rep_hdr->tcm_len = htonl(rep_buf->len); | |
668 | rep_hdr->tcm_flags &= htons(~TCM_F_REQUEST); | |
669 | } else { | |
670 | rep_buf = *buf; | |
671 | *buf = NULL; | |
672 | } | |
673 | ||
674 | /* NEED TO ADD CODE TO HANDLE FAILED SEND (SUCH AS CONGESTION) */ | |
675 | tipc_send_buf2port(port_ref, orig, rep_buf, rep_buf->len); | |
676 | } | |
677 | ||
678 | int cfg_init(void) | |
679 | { | |
680 | struct tipc_name_seq seq; | |
681 | int res; | |
682 | ||
683 | memset(&mng, 0, sizeof(mng)); | |
684 | INIT_LIST_HEAD(&mng.link_subscribers); | |
685 | ||
686 | res = tipc_attach(&mng.user_ref, 0, 0); | |
687 | if (res) | |
688 | goto failed; | |
689 | ||
690 | res = tipc_createport(mng.user_ref, 0, TIPC_CRITICAL_IMPORTANCE, | |
691 | NULL, NULL, NULL, | |
692 | NULL, cfg_named_msg_event, NULL, | |
693 | NULL, &mng.port_ref); | |
694 | if (res) | |
695 | goto failed; | |
696 | ||
697 | seq.type = TIPC_CFG_SRV; | |
698 | seq.lower = seq.upper = tipc_own_addr; | |
699 | res = nametbl_publish_rsv(mng.port_ref, TIPC_ZONE_SCOPE, &seq); | |
700 | if (res) | |
701 | goto failed; | |
702 | ||
703 | return 0; | |
704 | ||
705 | failed: | |
706 | err("Unable to create configuration service\n"); | |
707 | tipc_detach(mng.user_ref); | |
708 | mng.user_ref = 0; | |
709 | return res; | |
710 | } | |
711 | ||
712 | void cfg_stop(void) | |
713 | { | |
714 | if (mng.user_ref) { | |
715 | tipc_detach(mng.user_ref); | |
716 | mng.user_ref = 0; | |
717 | } | |
718 | } |