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1 | /* |
2 | * net/tipc/config.c: TIPC configuration management code |
3 | * |
4 | * Copyright (c) 2002-2006, Ericsson AB |
5 | * Copyright (c) 2004-2007, Wind River Systems |
6 | * All rights reserved. |
7 | * |
8 | * Redistribution and use in source and binary forms, with or without |
9 | * modification, are permitted provided that the following conditions are met: |
10 | * |
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. |
19 | * |
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 |
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 DEFINE_SPINLOCK(config_lock); |
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 tipc_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 *tipc_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 tipc_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 *)skb_tail_pointer(buf); |
93 | int new_tlv_space = TLV_SPACE(tlv_data_size); |
94 | |
95 | if (skb_tailroom(buf) < new_tlv_space) { |
96 | dbg("tipc_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 *tipc_cfg_reply_unsigned_type(u16 tlv_type, u32 value) |
108 | { |
109 | struct sk_buff *buf; |
110 | __be32 value_net; |
111 | |
112 | buf = tipc_cfg_reply_alloc(TLV_SPACE(sizeof(value))); |
113 | if (buf) { |
114 | value_net = htonl(value); |
115 | tipc_cfg_append_tlv(buf, tlv_type, &value_net, |
116 | sizeof(value_net)); |
117 | } |
118 | return buf; |
119 | } |
120 | |
121 | struct sk_buff *tipc_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 = tipc_cfg_reply_alloc(TLV_SPACE(string_len)); |
127 | if (buf) |
128 | tipc_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 = 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 | tipc_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 tipc_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 tipc_cfg_reply_error_string("unable to enable bearer"); |
265 | |
266 | return tipc_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 tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
273 | |
274 | if (tipc_disable_bearer((char *)TLV_DATA(req_tlv_area))) |
275 | return tipc_cfg_reply_error_string("unable to disable bearer"); |
276 | |
277 | return tipc_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 tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
286 | |
287 | addr = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
288 | if (addr == tipc_own_addr) |
289 | return tipc_cfg_reply_none(); |
290 | if (!tipc_addr_node_valid(addr)) |
291 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE |
292 | " (node address)"); |
293 | if (tipc_mode == TIPC_NET_MODE) |
294 | return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
295 | " (cannot change node address once assigned)"); |
296 | |
297 | /* |
298 | * Must release all spinlocks before calling start_net() because |
299 | * Linux version of TIPC calls eth_media_start() which calls |
300 | * register_netdevice_notifier() which may block! |
301 | * |
302 | * Temporarily releasing the lock should be harmless for non-Linux TIPC, |
303 | * but Linux version of eth_media_start() should really be reworked |
304 | * so that it can be called with spinlocks held. |
305 | */ |
306 | |
307 | spin_unlock_bh(&config_lock); |
308 | tipc_core_start_net(addr); |
309 | spin_lock_bh(&config_lock); |
310 | return tipc_cfg_reply_none(); |
311 | } |
312 | |
313 | static struct sk_buff *cfg_set_remote_mng(void) |
314 | { |
315 | u32 value; |
316 | |
317 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) |
318 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
319 | |
320 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
321 | tipc_remote_management = (value != 0); |
322 | return tipc_cfg_reply_none(); |
323 | } |
324 | |
325 | static struct sk_buff *cfg_set_max_publications(void) |
326 | { |
327 | u32 value; |
328 | |
329 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) |
330 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
331 | |
332 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
333 | if (value != delimit(value, 1, 65535)) |
334 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE |
335 | " (max publications must be 1-65535)"); |
336 | tipc_max_publications = value; |
337 | return tipc_cfg_reply_none(); |
338 | } |
339 | |
340 | static struct sk_buff *cfg_set_max_subscriptions(void) |
341 | { |
342 | u32 value; |
343 | |
344 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) |
345 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
346 | |
347 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
348 | if (value != delimit(value, 1, 65535)) |
349 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE |
350 | " (max subscriptions must be 1-65535"); |
351 | tipc_max_subscriptions = value; |
352 | return tipc_cfg_reply_none(); |
353 | } |
354 | |
355 | static struct sk_buff *cfg_set_max_ports(void) |
356 | { |
357 | u32 value; |
358 | |
359 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) |
360 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
361 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
362 | if (value == tipc_max_ports) |
363 | return tipc_cfg_reply_none(); |
364 | if (value != delimit(value, 127, 65535)) |
365 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE |
366 | " (max ports must be 127-65535)"); |
367 | if (tipc_mode != TIPC_NOT_RUNNING) |
368 | return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
369 | " (cannot change max ports while TIPC is active)"); |
370 | tipc_max_ports = value; |
371 | return tipc_cfg_reply_none(); |
372 | } |
373 | |
374 | static struct sk_buff *cfg_set_max_zones(void) |
375 | { |
376 | u32 value; |
377 | |
378 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) |
379 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
380 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
381 | if (value == tipc_max_zones) |
382 | return tipc_cfg_reply_none(); |
383 | if (value != delimit(value, 1, 255)) |
384 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE |
385 | " (max zones must be 1-255)"); |
386 | if (tipc_mode == TIPC_NET_MODE) |
387 | return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
388 | " (cannot change max zones once TIPC has joined a network)"); |
389 | tipc_max_zones = value; |
390 | return tipc_cfg_reply_none(); |
391 | } |
392 | |
393 | static struct sk_buff *cfg_set_max_clusters(void) |
394 | { |
395 | u32 value; |
396 | |
397 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) |
398 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
399 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
400 | if (value != delimit(value, 1, 1)) |
401 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE |
402 | " (max clusters fixed at 1)"); |
403 | return tipc_cfg_reply_none(); |
404 | } |
405 | |
406 | static struct sk_buff *cfg_set_max_nodes(void) |
407 | { |
408 | u32 value; |
409 | |
410 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) |
411 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
412 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
413 | if (value == tipc_max_nodes) |
414 | return tipc_cfg_reply_none(); |
415 | if (value != delimit(value, 8, 2047)) |
416 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE |
417 | " (max nodes must be 8-2047)"); |
418 | if (tipc_mode == TIPC_NET_MODE) |
419 | return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
420 | " (cannot change max nodes once TIPC has joined a network)"); |
421 | tipc_max_nodes = value; |
422 | return tipc_cfg_reply_none(); |
423 | } |
424 | |
425 | static struct sk_buff *cfg_set_max_slaves(void) |
426 | { |
427 | u32 value; |
428 | |
429 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) |
430 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
431 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
432 | if (value != 0) |
433 | return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
434 | " (max secondary nodes fixed at 0)"); |
435 | return tipc_cfg_reply_none(); |
436 | } |
437 | |
438 | static struct sk_buff *cfg_set_netid(void) |
439 | { |
440 | u32 value; |
441 | |
442 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) |
443 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
444 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
445 | if (value == tipc_net_id) |
446 | return tipc_cfg_reply_none(); |
447 | if (value != delimit(value, 1, 9999)) |
448 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE |
449 | " (network id must be 1-9999)"); |
450 | if (tipc_mode == TIPC_NET_MODE) |
451 | return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
452 | " (cannot change network id once TIPC has joined a network)"); |
453 | tipc_net_id = value; |
454 | return tipc_cfg_reply_none(); |
455 | } |
456 | |
457 | struct sk_buff *tipc_cfg_do_cmd(u32 orig_node, u16 cmd, const void *request_area, |
458 | int request_space, int reply_headroom) |
459 | { |
460 | struct sk_buff *rep_tlv_buf; |
461 | |
462 | spin_lock_bh(&config_lock); |
463 | |
464 | /* Save request and reply details in a well-known location */ |
465 | |
466 | req_tlv_area = request_area; |
467 | req_tlv_space = request_space; |
468 | rep_headroom = reply_headroom; |
469 | |
470 | /* Check command authorization */ |
471 | |
472 | if (likely(orig_node == tipc_own_addr)) { |
473 | /* command is permitted */ |
474 | } else if (cmd >= 0x8000) { |
475 | rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
476 | " (cannot be done remotely)"); |
477 | goto exit; |
478 | } else if (!tipc_remote_management) { |
479 | rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NO_REMOTE); |
480 | goto exit; |
481 | } |
482 | else if (cmd >= 0x4000) { |
483 | u32 domain = 0; |
484 | |
485 | if ((tipc_nametbl_translate(TIPC_ZM_SRV, 0, &domain) == 0) || |
486 | (domain != orig_node)) { |
487 | rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_ZONE_MSTR); |
488 | goto exit; |
489 | } |
490 | } |
491 | |
492 | /* Call appropriate processing routine */ |
493 | |
494 | switch (cmd) { |
495 | case TIPC_CMD_NOOP: |
496 | rep_tlv_buf = tipc_cfg_reply_none(); |
497 | break; |
498 | case TIPC_CMD_GET_NODES: |
499 | rep_tlv_buf = tipc_node_get_nodes(req_tlv_area, req_tlv_space); |
500 | break; |
501 | case TIPC_CMD_GET_LINKS: |
502 | rep_tlv_buf = tipc_node_get_links(req_tlv_area, req_tlv_space); |
503 | break; |
504 | case TIPC_CMD_SHOW_LINK_STATS: |
505 | rep_tlv_buf = tipc_link_cmd_show_stats(req_tlv_area, req_tlv_space); |
506 | break; |
507 | case TIPC_CMD_RESET_LINK_STATS: |
508 | rep_tlv_buf = tipc_link_cmd_reset_stats(req_tlv_area, req_tlv_space); |
509 | break; |
510 | case TIPC_CMD_SHOW_NAME_TABLE: |
511 | rep_tlv_buf = tipc_nametbl_get(req_tlv_area, req_tlv_space); |
512 | break; |
513 | case TIPC_CMD_GET_BEARER_NAMES: |
514 | rep_tlv_buf = tipc_bearer_get_names(); |
515 | break; |
516 | case TIPC_CMD_GET_MEDIA_NAMES: |
517 | rep_tlv_buf = tipc_media_get_names(); |
518 | break; |
519 | case TIPC_CMD_SHOW_PORTS: |
520 | rep_tlv_buf = tipc_port_get_ports(); |
521 | break; |
522 | #if 0 |
523 | case TIPC_CMD_SHOW_PORT_STATS: |
524 | rep_tlv_buf = port_show_stats(req_tlv_area, req_tlv_space); |
525 | break; |
526 | case TIPC_CMD_RESET_PORT_STATS: |
527 | rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED); |
528 | break; |
529 | #endif |
530 | case TIPC_CMD_SET_LOG_SIZE: |
531 | rep_tlv_buf = tipc_log_resize_cmd(req_tlv_area, req_tlv_space); |
532 | break; |
533 | case TIPC_CMD_DUMP_LOG: |
534 | rep_tlv_buf = tipc_log_dump(); |
535 | break; |
536 | case TIPC_CMD_SET_LINK_TOL: |
537 | case TIPC_CMD_SET_LINK_PRI: |
538 | case TIPC_CMD_SET_LINK_WINDOW: |
539 | rep_tlv_buf = tipc_link_cmd_config(req_tlv_area, req_tlv_space, cmd); |
540 | break; |
541 | case TIPC_CMD_ENABLE_BEARER: |
542 | rep_tlv_buf = cfg_enable_bearer(); |
543 | break; |
544 | case TIPC_CMD_DISABLE_BEARER: |
545 | rep_tlv_buf = cfg_disable_bearer(); |
546 | break; |
547 | case TIPC_CMD_SET_NODE_ADDR: |
548 | rep_tlv_buf = cfg_set_own_addr(); |
549 | break; |
550 | case TIPC_CMD_SET_REMOTE_MNG: |
551 | rep_tlv_buf = cfg_set_remote_mng(); |
552 | break; |
553 | case TIPC_CMD_SET_MAX_PORTS: |
554 | rep_tlv_buf = cfg_set_max_ports(); |
555 | break; |
556 | case TIPC_CMD_SET_MAX_PUBL: |
557 | rep_tlv_buf = cfg_set_max_publications(); |
558 | break; |
559 | case TIPC_CMD_SET_MAX_SUBSCR: |
560 | rep_tlv_buf = cfg_set_max_subscriptions(); |
561 | break; |
562 | case TIPC_CMD_SET_MAX_ZONES: |
563 | rep_tlv_buf = cfg_set_max_zones(); |
564 | break; |
565 | case TIPC_CMD_SET_MAX_CLUSTERS: |
566 | rep_tlv_buf = cfg_set_max_clusters(); |
567 | break; |
568 | case TIPC_CMD_SET_MAX_NODES: |
569 | rep_tlv_buf = cfg_set_max_nodes(); |
570 | break; |
571 | case TIPC_CMD_SET_MAX_SLAVES: |
572 | rep_tlv_buf = cfg_set_max_slaves(); |
573 | break; |
574 | case TIPC_CMD_SET_NETID: |
575 | rep_tlv_buf = cfg_set_netid(); |
576 | break; |
577 | case TIPC_CMD_GET_REMOTE_MNG: |
578 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_remote_management); |
579 | break; |
580 | case TIPC_CMD_GET_MAX_PORTS: |
581 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_ports); |
582 | break; |
583 | case TIPC_CMD_GET_MAX_PUBL: |
584 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_publications); |
585 | break; |
586 | case TIPC_CMD_GET_MAX_SUBSCR: |
587 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_subscriptions); |
588 | break; |
589 | case TIPC_CMD_GET_MAX_ZONES: |
590 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_zones); |
591 | break; |
592 | case TIPC_CMD_GET_MAX_CLUSTERS: |
593 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_clusters); |
594 | break; |
595 | case TIPC_CMD_GET_MAX_NODES: |
596 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_nodes); |
597 | break; |
598 | case TIPC_CMD_GET_MAX_SLAVES: |
599 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_slaves); |
600 | break; |
601 | case TIPC_CMD_GET_NETID: |
602 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_net_id); |
603 | break; |
604 | case TIPC_CMD_NOT_NET_ADMIN: |
605 | rep_tlv_buf = |
606 | tipc_cfg_reply_error_string(TIPC_CFG_NOT_NET_ADMIN); |
607 | break; |
608 | default: |
609 | rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
610 | " (unknown command)"); |
611 | break; |
612 | } |
613 | |
614 | /* Return reply buffer */ |
615 | exit: |
616 | spin_unlock_bh(&config_lock); |
617 | return rep_tlv_buf; |
618 | } |
619 | |
620 | static void cfg_named_msg_event(void *userdata, |
621 | u32 port_ref, |
622 | struct sk_buff **buf, |
623 | const unchar *msg, |
624 | u32 size, |
625 | u32 importance, |
626 | struct tipc_portid const *orig, |
627 | struct tipc_name_seq const *dest) |
628 | { |
629 | struct tipc_cfg_msg_hdr *req_hdr; |
630 | struct tipc_cfg_msg_hdr *rep_hdr; |
631 | struct sk_buff *rep_buf; |
632 | |
633 | /* Validate configuration message header (ignore invalid message) */ |
634 | |
635 | req_hdr = (struct tipc_cfg_msg_hdr *)msg; |
636 | if ((size < sizeof(*req_hdr)) || |
637 | (size != TCM_ALIGN(ntohl(req_hdr->tcm_len))) || |
638 | (ntohs(req_hdr->tcm_flags) != TCM_F_REQUEST)) { |
639 | warn("Invalid configuration message discarded\n"); |
640 | return; |
641 | } |
642 | |
643 | /* Generate reply for request (if can't, return request) */ |
644 | |
645 | rep_buf = tipc_cfg_do_cmd(orig->node, |
646 | ntohs(req_hdr->tcm_type), |
647 | msg + sizeof(*req_hdr), |
648 | size - sizeof(*req_hdr), |
649 | BUF_HEADROOM + MAX_H_SIZE + sizeof(*rep_hdr)); |
650 | if (rep_buf) { |
651 | skb_push(rep_buf, sizeof(*rep_hdr)); |
652 | rep_hdr = (struct tipc_cfg_msg_hdr *)rep_buf->data; |
653 | memcpy(rep_hdr, req_hdr, sizeof(*rep_hdr)); |
654 | rep_hdr->tcm_len = htonl(rep_buf->len); |
655 | rep_hdr->tcm_flags &= htons(~TCM_F_REQUEST); |
656 | } else { |
657 | rep_buf = *buf; |
658 | *buf = NULL; |
659 | } |
660 | |
661 | /* NEED TO ADD CODE TO HANDLE FAILED SEND (SUCH AS CONGESTION) */ |
662 | tipc_send_buf2port(port_ref, orig, rep_buf, rep_buf->len); |
663 | } |
664 | |
665 | int tipc_cfg_init(void) |
666 | { |
667 | struct tipc_name_seq seq; |
668 | int res; |
669 | |
670 | memset(&mng, 0, sizeof(mng)); |
671 | INIT_LIST_HEAD(&mng.link_subscribers); |
672 | |
673 | res = tipc_attach(&mng.user_ref, NULL, NULL); |
674 | if (res) |
675 | goto failed; |
676 | |
677 | res = tipc_createport(mng.user_ref, NULL, TIPC_CRITICAL_IMPORTANCE, |
678 | NULL, NULL, NULL, |
679 | NULL, cfg_named_msg_event, NULL, |
680 | NULL, &mng.port_ref); |
681 | if (res) |
682 | goto failed; |
683 | |
684 | seq.type = TIPC_CFG_SRV; |
685 | seq.lower = seq.upper = tipc_own_addr; |
686 | res = tipc_nametbl_publish_rsv(mng.port_ref, TIPC_ZONE_SCOPE, &seq); |
687 | if (res) |
688 | goto failed; |
689 | |
690 | return 0; |
691 | |
692 | failed: |
693 | err("Unable to create configuration service\n"); |
694 | tipc_detach(mng.user_ref); |
695 | mng.user_ref = 0; |
696 | return res; |
697 | } |
698 | |
699 | void tipc_cfg_stop(void) |
700 | { |
701 | if (mng.user_ref) { |
702 | tipc_detach(mng.user_ref); |
703 | mng.user_ref = 0; |
704 | } |
705 | } |
706 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
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v3.9