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Commit | Line | Data |
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b97bf3fd PL |
1 | /* |
2 | * net/tipc/config.c: TIPC configuration management code | |
c4307285 | 3 | * |
593a5f22 | 4 | * Copyright (c) 2002-2006, Ericsson AB |
59f0c452 | 5 | * Copyright (c) 2004-2007, 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; | |
b97bf3fd PL |
59 | }; |
60 | ||
61 | static struct manager mng = { 0}; | |
62 | ||
34af946a | 63 | static DEFINE_SPINLOCK(config_lock); |
b97bf3fd PL |
64 | |
65 | static const void *req_tlv_area; /* request message TLV area */ | |
66 | static int req_tlv_space; /* request message TLV area size */ | |
67 | static int rep_headroom; /* reply message headroom to use */ | |
68 | ||
69 | ||
4323add6 | 70 | struct sk_buff *tipc_cfg_reply_alloc(int payload_size) |
b97bf3fd PL |
71 | { |
72 | struct sk_buff *buf; | |
73 | ||
74 | buf = alloc_skb(rep_headroom + payload_size, GFP_ATOMIC); | |
75 | if (buf) | |
76 | skb_reserve(buf, rep_headroom); | |
77 | return buf; | |
78 | } | |
79 | ||
c4307285 | 80 | int tipc_cfg_append_tlv(struct sk_buff *buf, int tlv_type, |
4323add6 | 81 | void *tlv_data, int tlv_data_size) |
b97bf3fd | 82 | { |
27a884dc | 83 | struct tlv_desc *tlv = (struct tlv_desc *)skb_tail_pointer(buf); |
b97bf3fd PL |
84 | int new_tlv_space = TLV_SPACE(tlv_data_size); |
85 | ||
86 | if (skb_tailroom(buf) < new_tlv_space) { | |
4323add6 | 87 | dbg("tipc_cfg_append_tlv unable to append TLV\n"); |
b97bf3fd PL |
88 | return 0; |
89 | } | |
90 | skb_put(buf, new_tlv_space); | |
91 | tlv->tlv_type = htons(tlv_type); | |
92 | tlv->tlv_len = htons(TLV_LENGTH(tlv_data_size)); | |
93 | if (tlv_data_size && tlv_data) | |
94 | memcpy(TLV_DATA(tlv), tlv_data, tlv_data_size); | |
95 | return 1; | |
96 | } | |
97 | ||
31e3c3f6 | 98 | static struct sk_buff *tipc_cfg_reply_unsigned_type(u16 tlv_type, u32 value) |
b97bf3fd PL |
99 | { |
100 | struct sk_buff *buf; | |
3e6c8cd5 | 101 | __be32 value_net; |
b97bf3fd | 102 | |
4323add6 | 103 | buf = tipc_cfg_reply_alloc(TLV_SPACE(sizeof(value))); |
b97bf3fd PL |
104 | if (buf) { |
105 | value_net = htonl(value); | |
c4307285 | 106 | tipc_cfg_append_tlv(buf, tlv_type, &value_net, |
4323add6 | 107 | sizeof(value_net)); |
b97bf3fd PL |
108 | } |
109 | return buf; | |
110 | } | |
111 | ||
31e3c3f6 | 112 | static struct sk_buff *tipc_cfg_reply_unsigned(u32 value) |
113 | { | |
114 | return tipc_cfg_reply_unsigned_type(TIPC_TLV_UNSIGNED, value); | |
115 | } | |
116 | ||
4323add6 | 117 | struct sk_buff *tipc_cfg_reply_string_type(u16 tlv_type, char *string) |
b97bf3fd PL |
118 | { |
119 | struct sk_buff *buf; | |
120 | int string_len = strlen(string) + 1; | |
121 | ||
4323add6 | 122 | buf = tipc_cfg_reply_alloc(TLV_SPACE(string_len)); |
b97bf3fd | 123 | if (buf) |
4323add6 | 124 | tipc_cfg_append_tlv(buf, tlv_type, string, string_len); |
b97bf3fd PL |
125 | return buf; |
126 | } | |
127 | ||
107e7be6 AS |
128 | #define MAX_STATS_INFO 2000 |
129 | ||
130 | static struct sk_buff *tipc_show_stats(void) | |
131 | { | |
132 | struct sk_buff *buf; | |
133 | struct tlv_desc *rep_tlv; | |
134 | struct print_buf pb; | |
135 | int str_len; | |
136 | u32 value; | |
137 | ||
138 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
139 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); | |
140 | ||
141 | value = ntohl(*(u32 *)TLV_DATA(req_tlv_area)); | |
142 | if (value != 0) | |
143 | return tipc_cfg_reply_error_string("unsupported argument"); | |
144 | ||
145 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_STATS_INFO)); | |
146 | if (buf == NULL) | |
147 | return NULL; | |
148 | ||
149 | rep_tlv = (struct tlv_desc *)buf->data; | |
150 | tipc_printbuf_init(&pb, (char *)TLV_DATA(rep_tlv), MAX_STATS_INFO); | |
151 | ||
152 | tipc_printf(&pb, "TIPC version " TIPC_MOD_VER "\n"); | |
153 | ||
154 | /* Use additional tipc_printf()'s to return more info ... */ | |
155 | ||
156 | str_len = tipc_printbuf_validate(&pb); | |
157 | skb_put(buf, TLV_SPACE(str_len)); | |
158 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
159 | ||
160 | return buf; | |
161 | } | |
162 | ||
b97bf3fd PL |
163 | static struct sk_buff *cfg_enable_bearer(void) |
164 | { | |
165 | struct tipc_bearer_config *args; | |
166 | ||
167 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_BEARER_CONFIG)) | |
4323add6 | 168 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
b97bf3fd PL |
169 | |
170 | args = (struct tipc_bearer_config *)TLV_DATA(req_tlv_area); | |
171 | if (tipc_enable_bearer(args->name, | |
172 | ntohl(args->detect_scope), | |
173 | ntohl(args->priority))) | |
4323add6 | 174 | return tipc_cfg_reply_error_string("unable to enable bearer"); |
b97bf3fd | 175 | |
4323add6 | 176 | return tipc_cfg_reply_none(); |
b97bf3fd PL |
177 | } |
178 | ||
179 | static struct sk_buff *cfg_disable_bearer(void) | |
180 | { | |
181 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_BEARER_NAME)) | |
4323add6 | 182 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
b97bf3fd PL |
183 | |
184 | if (tipc_disable_bearer((char *)TLV_DATA(req_tlv_area))) | |
4323add6 | 185 | return tipc_cfg_reply_error_string("unable to disable bearer"); |
b97bf3fd | 186 | |
4323add6 | 187 | return tipc_cfg_reply_none(); |
b97bf3fd PL |
188 | } |
189 | ||
190 | static struct sk_buff *cfg_set_own_addr(void) | |
191 | { | |
192 | u32 addr; | |
193 | ||
194 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_NET_ADDR)) | |
4323add6 | 195 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
b97bf3fd | 196 | |
3e6c8cd5 | 197 | addr = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
b97bf3fd | 198 | if (addr == tipc_own_addr) |
4323add6 PL |
199 | return tipc_cfg_reply_none(); |
200 | if (!tipc_addr_node_valid(addr)) | |
201 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE | |
202 | " (node address)"); | |
e100ae92 | 203 | if (tipc_mode == TIPC_NET_MODE) |
4323add6 PL |
204 | return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
205 | " (cannot change node address once assigned)"); | |
e100ae92 | 206 | |
c4307285 | 207 | /* |
e100ae92 AS |
208 | * Must release all spinlocks before calling start_net() because |
209 | * Linux version of TIPC calls eth_media_start() which calls | |
210 | * register_netdevice_notifier() which may block! | |
211 | * | |
212 | * Temporarily releasing the lock should be harmless for non-Linux TIPC, | |
213 | * but Linux version of eth_media_start() should really be reworked | |
214 | * so that it can be called with spinlocks held. | |
215 | */ | |
b97bf3fd PL |
216 | |
217 | spin_unlock_bh(&config_lock); | |
03194379 | 218 | tipc_core_start_net(addr); |
b97bf3fd | 219 | spin_lock_bh(&config_lock); |
4323add6 | 220 | return tipc_cfg_reply_none(); |
b97bf3fd PL |
221 | } |
222 | ||
223 | static struct sk_buff *cfg_set_remote_mng(void) | |
224 | { | |
225 | u32 value; | |
226 | ||
227 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
4323add6 | 228 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
b97bf3fd | 229 | |
3e6c8cd5 | 230 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
b97bf3fd | 231 | tipc_remote_management = (value != 0); |
4323add6 | 232 | return tipc_cfg_reply_none(); |
b97bf3fd PL |
233 | } |
234 | ||
235 | static struct sk_buff *cfg_set_max_publications(void) | |
236 | { | |
237 | u32 value; | |
238 | ||
239 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
4323add6 | 240 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
b97bf3fd | 241 | |
3e6c8cd5 | 242 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
b97bf3fd | 243 | if (value != delimit(value, 1, 65535)) |
4323add6 PL |
244 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE |
245 | " (max publications must be 1-65535)"); | |
b97bf3fd | 246 | tipc_max_publications = value; |
4323add6 | 247 | return tipc_cfg_reply_none(); |
b97bf3fd PL |
248 | } |
249 | ||
250 | static struct sk_buff *cfg_set_max_subscriptions(void) | |
251 | { | |
252 | u32 value; | |
253 | ||
254 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
4323add6 | 255 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
b97bf3fd | 256 | |
3e6c8cd5 | 257 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
b97bf3fd | 258 | if (value != delimit(value, 1, 65535)) |
4323add6 PL |
259 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE |
260 | " (max subscriptions must be 1-65535"); | |
b97bf3fd | 261 | tipc_max_subscriptions = value; |
4323add6 | 262 | return tipc_cfg_reply_none(); |
b97bf3fd PL |
263 | } |
264 | ||
265 | static struct sk_buff *cfg_set_max_ports(void) | |
266 | { | |
b97bf3fd PL |
267 | u32 value; |
268 | ||
269 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
4323add6 | 270 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
3e6c8cd5 | 271 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
e100ae92 AS |
272 | if (value == tipc_max_ports) |
273 | return tipc_cfg_reply_none(); | |
b97bf3fd | 274 | if (value != delimit(value, 127, 65535)) |
4323add6 PL |
275 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE |
276 | " (max ports must be 127-65535)"); | |
e100ae92 | 277 | if (tipc_mode != TIPC_NOT_RUNNING) |
4323add6 | 278 | return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
e100ae92 | 279 | " (cannot change max ports while TIPC is active)"); |
b97bf3fd | 280 | tipc_max_ports = value; |
4323add6 | 281 | return tipc_cfg_reply_none(); |
b97bf3fd PL |
282 | } |
283 | ||
284 | static struct sk_buff *cfg_set_max_zones(void) | |
285 | { | |
286 | u32 value; | |
287 | ||
288 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
4323add6 | 289 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
3e6c8cd5 | 290 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
e100ae92 AS |
291 | if (value == tipc_max_zones) |
292 | return tipc_cfg_reply_none(); | |
b97bf3fd | 293 | if (value != delimit(value, 1, 255)) |
4323add6 PL |
294 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE |
295 | " (max zones must be 1-255)"); | |
e100ae92 AS |
296 | if (tipc_mode == TIPC_NET_MODE) |
297 | return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED | |
298 | " (cannot change max zones once TIPC has joined a network)"); | |
299 | tipc_max_zones = value; | |
300 | return tipc_cfg_reply_none(); | |
b97bf3fd PL |
301 | } |
302 | ||
303 | static struct sk_buff *cfg_set_max_clusters(void) | |
304 | { | |
305 | u32 value; | |
306 | ||
307 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
4323add6 | 308 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
3e6c8cd5 | 309 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
e100ae92 AS |
310 | if (value != delimit(value, 1, 1)) |
311 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE | |
4323add6 PL |
312 | " (max clusters fixed at 1)"); |
313 | return tipc_cfg_reply_none(); | |
b97bf3fd PL |
314 | } |
315 | ||
316 | static struct sk_buff *cfg_set_max_nodes(void) | |
317 | { | |
318 | u32 value; | |
319 | ||
320 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
4323add6 | 321 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
3e6c8cd5 | 322 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
e100ae92 AS |
323 | if (value == tipc_max_nodes) |
324 | return tipc_cfg_reply_none(); | |
b97bf3fd | 325 | if (value != delimit(value, 8, 2047)) |
4323add6 PL |
326 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE |
327 | " (max nodes must be 8-2047)"); | |
e100ae92 AS |
328 | if (tipc_mode == TIPC_NET_MODE) |
329 | return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED | |
330 | " (cannot change max nodes once TIPC has joined a network)"); | |
331 | tipc_max_nodes = value; | |
332 | return tipc_cfg_reply_none(); | |
b97bf3fd PL |
333 | } |
334 | ||
335 | static struct sk_buff *cfg_set_max_slaves(void) | |
336 | { | |
337 | u32 value; | |
338 | ||
339 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
4323add6 | 340 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
3e6c8cd5 | 341 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
b97bf3fd | 342 | if (value != 0) |
4323add6 PL |
343 | return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
344 | " (max secondary nodes fixed at 0)"); | |
345 | return tipc_cfg_reply_none(); | |
b97bf3fd PL |
346 | } |
347 | ||
348 | static struct sk_buff *cfg_set_netid(void) | |
349 | { | |
350 | u32 value; | |
351 | ||
352 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
4323add6 | 353 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
3e6c8cd5 | 354 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
e100ae92 AS |
355 | if (value == tipc_net_id) |
356 | return tipc_cfg_reply_none(); | |
b97bf3fd | 357 | if (value != delimit(value, 1, 9999)) |
4323add6 PL |
358 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE |
359 | " (network id must be 1-9999)"); | |
e100ae92 | 360 | if (tipc_mode == TIPC_NET_MODE) |
4323add6 | 361 | return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
e100ae92 AS |
362 | " (cannot change network id once TIPC has joined a network)"); |
363 | tipc_net_id = value; | |
364 | return tipc_cfg_reply_none(); | |
b97bf3fd PL |
365 | } |
366 | ||
4323add6 PL |
367 | struct sk_buff *tipc_cfg_do_cmd(u32 orig_node, u16 cmd, const void *request_area, |
368 | int request_space, int reply_headroom) | |
b97bf3fd PL |
369 | { |
370 | struct sk_buff *rep_tlv_buf; | |
371 | ||
372 | spin_lock_bh(&config_lock); | |
373 | ||
374 | /* Save request and reply details in a well-known location */ | |
375 | ||
376 | req_tlv_area = request_area; | |
377 | req_tlv_space = request_space; | |
378 | rep_headroom = reply_headroom; | |
379 | ||
380 | /* Check command authorization */ | |
381 | ||
382 | if (likely(orig_node == tipc_own_addr)) { | |
383 | /* command is permitted */ | |
384 | } else if (cmd >= 0x8000) { | |
4323add6 PL |
385 | rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
386 | " (cannot be done remotely)"); | |
b97bf3fd PL |
387 | goto exit; |
388 | } else if (!tipc_remote_management) { | |
4323add6 | 389 | rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NO_REMOTE); |
b97bf3fd PL |
390 | goto exit; |
391 | } | |
392 | else if (cmd >= 0x4000) { | |
393 | u32 domain = 0; | |
394 | ||
4323add6 | 395 | if ((tipc_nametbl_translate(TIPC_ZM_SRV, 0, &domain) == 0) || |
b97bf3fd | 396 | (domain != orig_node)) { |
4323add6 | 397 | rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_ZONE_MSTR); |
b97bf3fd PL |
398 | goto exit; |
399 | } | |
400 | } | |
401 | ||
402 | /* Call appropriate processing routine */ | |
403 | ||
404 | switch (cmd) { | |
405 | case TIPC_CMD_NOOP: | |
4323add6 | 406 | rep_tlv_buf = tipc_cfg_reply_none(); |
b97bf3fd PL |
407 | break; |
408 | case TIPC_CMD_GET_NODES: | |
4323add6 | 409 | rep_tlv_buf = tipc_node_get_nodes(req_tlv_area, req_tlv_space); |
b97bf3fd PL |
410 | break; |
411 | case TIPC_CMD_GET_LINKS: | |
4323add6 | 412 | rep_tlv_buf = tipc_node_get_links(req_tlv_area, req_tlv_space); |
b97bf3fd PL |
413 | break; |
414 | case TIPC_CMD_SHOW_LINK_STATS: | |
4323add6 | 415 | rep_tlv_buf = tipc_link_cmd_show_stats(req_tlv_area, req_tlv_space); |
b97bf3fd PL |
416 | break; |
417 | case TIPC_CMD_RESET_LINK_STATS: | |
4323add6 | 418 | rep_tlv_buf = tipc_link_cmd_reset_stats(req_tlv_area, req_tlv_space); |
b97bf3fd PL |
419 | break; |
420 | case TIPC_CMD_SHOW_NAME_TABLE: | |
4323add6 | 421 | rep_tlv_buf = tipc_nametbl_get(req_tlv_area, req_tlv_space); |
b97bf3fd PL |
422 | break; |
423 | case TIPC_CMD_GET_BEARER_NAMES: | |
4323add6 | 424 | rep_tlv_buf = tipc_bearer_get_names(); |
b97bf3fd PL |
425 | break; |
426 | case TIPC_CMD_GET_MEDIA_NAMES: | |
4323add6 | 427 | rep_tlv_buf = tipc_media_get_names(); |
b97bf3fd PL |
428 | break; |
429 | case TIPC_CMD_SHOW_PORTS: | |
4323add6 | 430 | rep_tlv_buf = tipc_port_get_ports(); |
b97bf3fd | 431 | break; |
b97bf3fd | 432 | case TIPC_CMD_SET_LOG_SIZE: |
025adbe8 | 433 | rep_tlv_buf = tipc_log_resize_cmd(req_tlv_area, req_tlv_space); |
b97bf3fd PL |
434 | break; |
435 | case TIPC_CMD_DUMP_LOG: | |
4323add6 | 436 | rep_tlv_buf = tipc_log_dump(); |
b97bf3fd | 437 | break; |
107e7be6 AS |
438 | case TIPC_CMD_SHOW_STATS: |
439 | rep_tlv_buf = tipc_show_stats(); | |
440 | break; | |
b97bf3fd PL |
441 | case TIPC_CMD_SET_LINK_TOL: |
442 | case TIPC_CMD_SET_LINK_PRI: | |
443 | case TIPC_CMD_SET_LINK_WINDOW: | |
4323add6 | 444 | rep_tlv_buf = tipc_link_cmd_config(req_tlv_area, req_tlv_space, cmd); |
b97bf3fd PL |
445 | break; |
446 | case TIPC_CMD_ENABLE_BEARER: | |
447 | rep_tlv_buf = cfg_enable_bearer(); | |
448 | break; | |
449 | case TIPC_CMD_DISABLE_BEARER: | |
450 | rep_tlv_buf = cfg_disable_bearer(); | |
451 | break; | |
452 | case TIPC_CMD_SET_NODE_ADDR: | |
453 | rep_tlv_buf = cfg_set_own_addr(); | |
454 | break; | |
455 | case TIPC_CMD_SET_REMOTE_MNG: | |
456 | rep_tlv_buf = cfg_set_remote_mng(); | |
457 | break; | |
458 | case TIPC_CMD_SET_MAX_PORTS: | |
459 | rep_tlv_buf = cfg_set_max_ports(); | |
460 | break; | |
461 | case TIPC_CMD_SET_MAX_PUBL: | |
462 | rep_tlv_buf = cfg_set_max_publications(); | |
463 | break; | |
464 | case TIPC_CMD_SET_MAX_SUBSCR: | |
465 | rep_tlv_buf = cfg_set_max_subscriptions(); | |
466 | break; | |
467 | case TIPC_CMD_SET_MAX_ZONES: | |
468 | rep_tlv_buf = cfg_set_max_zones(); | |
469 | break; | |
470 | case TIPC_CMD_SET_MAX_CLUSTERS: | |
471 | rep_tlv_buf = cfg_set_max_clusters(); | |
472 | break; | |
473 | case TIPC_CMD_SET_MAX_NODES: | |
474 | rep_tlv_buf = cfg_set_max_nodes(); | |
475 | break; | |
476 | case TIPC_CMD_SET_MAX_SLAVES: | |
477 | rep_tlv_buf = cfg_set_max_slaves(); | |
478 | break; | |
479 | case TIPC_CMD_SET_NETID: | |
480 | rep_tlv_buf = cfg_set_netid(); | |
481 | break; | |
482 | case TIPC_CMD_GET_REMOTE_MNG: | |
4323add6 | 483 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_remote_management); |
b97bf3fd PL |
484 | break; |
485 | case TIPC_CMD_GET_MAX_PORTS: | |
4323add6 | 486 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_ports); |
b97bf3fd PL |
487 | break; |
488 | case TIPC_CMD_GET_MAX_PUBL: | |
4323add6 | 489 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_publications); |
b97bf3fd PL |
490 | break; |
491 | case TIPC_CMD_GET_MAX_SUBSCR: | |
4323add6 | 492 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_subscriptions); |
b97bf3fd PL |
493 | break; |
494 | case TIPC_CMD_GET_MAX_ZONES: | |
4323add6 | 495 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_zones); |
b97bf3fd PL |
496 | break; |
497 | case TIPC_CMD_GET_MAX_CLUSTERS: | |
4323add6 | 498 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_clusters); |
b97bf3fd PL |
499 | break; |
500 | case TIPC_CMD_GET_MAX_NODES: | |
4323add6 | 501 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_nodes); |
b97bf3fd PL |
502 | break; |
503 | case TIPC_CMD_GET_MAX_SLAVES: | |
4323add6 | 504 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_slaves); |
b97bf3fd PL |
505 | break; |
506 | case TIPC_CMD_GET_NETID: | |
4323add6 | 507 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_net_id); |
b97bf3fd | 508 | break; |
59f0c452 AS |
509 | case TIPC_CMD_NOT_NET_ADMIN: |
510 | rep_tlv_buf = | |
511 | tipc_cfg_reply_error_string(TIPC_CFG_NOT_NET_ADMIN); | |
512 | break; | |
b97bf3fd | 513 | default: |
53cfd1e1 AS |
514 | rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
515 | " (unknown command)"); | |
b97bf3fd PL |
516 | break; |
517 | } | |
518 | ||
519 | /* Return reply buffer */ | |
520 | exit: | |
521 | spin_unlock_bh(&config_lock); | |
522 | return rep_tlv_buf; | |
523 | } | |
524 | ||
525 | static void cfg_named_msg_event(void *userdata, | |
526 | u32 port_ref, | |
527 | struct sk_buff **buf, | |
528 | const unchar *msg, | |
529 | u32 size, | |
c4307285 | 530 | u32 importance, |
b97bf3fd PL |
531 | struct tipc_portid const *orig, |
532 | struct tipc_name_seq const *dest) | |
533 | { | |
534 | struct tipc_cfg_msg_hdr *req_hdr; | |
535 | struct tipc_cfg_msg_hdr *rep_hdr; | |
536 | struct sk_buff *rep_buf; | |
537 | ||
538 | /* Validate configuration message header (ignore invalid message) */ | |
539 | ||
540 | req_hdr = (struct tipc_cfg_msg_hdr *)msg; | |
541 | if ((size < sizeof(*req_hdr)) || | |
542 | (size != TCM_ALIGN(ntohl(req_hdr->tcm_len))) || | |
543 | (ntohs(req_hdr->tcm_flags) != TCM_F_REQUEST)) { | |
a10bd924 | 544 | warn("Invalid configuration message discarded\n"); |
b97bf3fd PL |
545 | return; |
546 | } | |
547 | ||
548 | /* Generate reply for request (if can't, return request) */ | |
549 | ||
4323add6 | 550 | rep_buf = tipc_cfg_do_cmd(orig->node, |
c4307285 | 551 | ntohs(req_hdr->tcm_type), |
4323add6 PL |
552 | msg + sizeof(*req_hdr), |
553 | size - sizeof(*req_hdr), | |
554 | BUF_HEADROOM + MAX_H_SIZE + sizeof(*rep_hdr)); | |
b97bf3fd PL |
555 | if (rep_buf) { |
556 | skb_push(rep_buf, sizeof(*rep_hdr)); | |
557 | rep_hdr = (struct tipc_cfg_msg_hdr *)rep_buf->data; | |
558 | memcpy(rep_hdr, req_hdr, sizeof(*rep_hdr)); | |
559 | rep_hdr->tcm_len = htonl(rep_buf->len); | |
560 | rep_hdr->tcm_flags &= htons(~TCM_F_REQUEST); | |
561 | } else { | |
562 | rep_buf = *buf; | |
563 | *buf = NULL; | |
564 | } | |
565 | ||
566 | /* NEED TO ADD CODE TO HANDLE FAILED SEND (SUCH AS CONGESTION) */ | |
567 | tipc_send_buf2port(port_ref, orig, rep_buf, rep_buf->len); | |
568 | } | |
569 | ||
4323add6 | 570 | int tipc_cfg_init(void) |
b97bf3fd PL |
571 | { |
572 | struct tipc_name_seq seq; | |
573 | int res; | |
574 | ||
1fc54d8f | 575 | res = tipc_attach(&mng.user_ref, NULL, NULL); |
b97bf3fd PL |
576 | if (res) |
577 | goto failed; | |
578 | ||
1fc54d8f | 579 | res = tipc_createport(mng.user_ref, NULL, TIPC_CRITICAL_IMPORTANCE, |
b97bf3fd PL |
580 | NULL, NULL, NULL, |
581 | NULL, cfg_named_msg_event, NULL, | |
582 | NULL, &mng.port_ref); | |
583 | if (res) | |
584 | goto failed; | |
585 | ||
586 | seq.type = TIPC_CFG_SRV; | |
587 | seq.lower = seq.upper = tipc_own_addr; | |
4323add6 | 588 | res = tipc_nametbl_publish_rsv(mng.port_ref, TIPC_ZONE_SCOPE, &seq); |
b97bf3fd PL |
589 | if (res) |
590 | goto failed; | |
591 | ||
592 | return 0; | |
593 | ||
594 | failed: | |
595 | err("Unable to create configuration service\n"); | |
596 | tipc_detach(mng.user_ref); | |
597 | mng.user_ref = 0; | |
598 | return res; | |
599 | } | |
600 | ||
4323add6 | 601 | void tipc_cfg_stop(void) |
b97bf3fd PL |
602 | { |
603 | if (mng.user_ref) { | |
604 | tipc_detach(mng.user_ref); | |
605 | mng.user_ref = 0; | |
606 | } | |
607 | } |