Commit | Line | Data |
---|---|---|
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" | |
b97bf3fd PL |
38 | #include "port.h" |
39 | #include "link.h" | |
b97bf3fd | 40 | #include "name_table.h" |
b97bf3fd | 41 | #include "config.h" |
b97bf3fd | 42 | |
7a488fd3 | 43 | static u32 config_port_ref; |
b97bf3fd | 44 | |
34af946a | 45 | static DEFINE_SPINLOCK(config_lock); |
b97bf3fd PL |
46 | |
47 | static const void *req_tlv_area; /* request message TLV area */ | |
48 | static int req_tlv_space; /* request message TLV area size */ | |
49 | static int rep_headroom; /* reply message headroom to use */ | |
50 | ||
51 | ||
4323add6 | 52 | struct sk_buff *tipc_cfg_reply_alloc(int payload_size) |
b97bf3fd PL |
53 | { |
54 | struct sk_buff *buf; | |
55 | ||
56 | buf = alloc_skb(rep_headroom + payload_size, GFP_ATOMIC); | |
57 | if (buf) | |
58 | skb_reserve(buf, rep_headroom); | |
59 | return buf; | |
60 | } | |
61 | ||
c4307285 | 62 | int tipc_cfg_append_tlv(struct sk_buff *buf, int tlv_type, |
4323add6 | 63 | void *tlv_data, int tlv_data_size) |
b97bf3fd | 64 | { |
27a884dc | 65 | struct tlv_desc *tlv = (struct tlv_desc *)skb_tail_pointer(buf); |
b97bf3fd PL |
66 | int new_tlv_space = TLV_SPACE(tlv_data_size); |
67 | ||
68 | if (skb_tailroom(buf) < new_tlv_space) { | |
4323add6 | 69 | dbg("tipc_cfg_append_tlv unable to append TLV\n"); |
b97bf3fd PL |
70 | return 0; |
71 | } | |
72 | skb_put(buf, new_tlv_space); | |
73 | tlv->tlv_type = htons(tlv_type); | |
74 | tlv->tlv_len = htons(TLV_LENGTH(tlv_data_size)); | |
75 | if (tlv_data_size && tlv_data) | |
76 | memcpy(TLV_DATA(tlv), tlv_data, tlv_data_size); | |
77 | return 1; | |
78 | } | |
79 | ||
31e3c3f6 | 80 | static struct sk_buff *tipc_cfg_reply_unsigned_type(u16 tlv_type, u32 value) |
b97bf3fd PL |
81 | { |
82 | struct sk_buff *buf; | |
3e6c8cd5 | 83 | __be32 value_net; |
b97bf3fd | 84 | |
4323add6 | 85 | buf = tipc_cfg_reply_alloc(TLV_SPACE(sizeof(value))); |
b97bf3fd PL |
86 | if (buf) { |
87 | value_net = htonl(value); | |
c4307285 | 88 | tipc_cfg_append_tlv(buf, tlv_type, &value_net, |
4323add6 | 89 | sizeof(value_net)); |
b97bf3fd PL |
90 | } |
91 | return buf; | |
92 | } | |
93 | ||
31e3c3f6 | 94 | static struct sk_buff *tipc_cfg_reply_unsigned(u32 value) |
95 | { | |
96 | return tipc_cfg_reply_unsigned_type(TIPC_TLV_UNSIGNED, value); | |
97 | } | |
98 | ||
4323add6 | 99 | struct sk_buff *tipc_cfg_reply_string_type(u16 tlv_type, char *string) |
b97bf3fd PL |
100 | { |
101 | struct sk_buff *buf; | |
102 | int string_len = strlen(string) + 1; | |
103 | ||
4323add6 | 104 | buf = tipc_cfg_reply_alloc(TLV_SPACE(string_len)); |
b97bf3fd | 105 | if (buf) |
4323add6 | 106 | tipc_cfg_append_tlv(buf, tlv_type, string, string_len); |
b97bf3fd PL |
107 | return buf; |
108 | } | |
109 | ||
107e7be6 AS |
110 | #define MAX_STATS_INFO 2000 |
111 | ||
112 | static struct sk_buff *tipc_show_stats(void) | |
113 | { | |
114 | struct sk_buff *buf; | |
115 | struct tlv_desc *rep_tlv; | |
116 | struct print_buf pb; | |
117 | int str_len; | |
118 | u32 value; | |
119 | ||
120 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
121 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); | |
122 | ||
123 | value = ntohl(*(u32 *)TLV_DATA(req_tlv_area)); | |
124 | if (value != 0) | |
125 | return tipc_cfg_reply_error_string("unsupported argument"); | |
126 | ||
127 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_STATS_INFO)); | |
128 | if (buf == NULL) | |
129 | return NULL; | |
130 | ||
131 | rep_tlv = (struct tlv_desc *)buf->data; | |
132 | tipc_printbuf_init(&pb, (char *)TLV_DATA(rep_tlv), MAX_STATS_INFO); | |
133 | ||
134 | tipc_printf(&pb, "TIPC version " TIPC_MOD_VER "\n"); | |
135 | ||
136 | /* Use additional tipc_printf()'s to return more info ... */ | |
137 | ||
138 | str_len = tipc_printbuf_validate(&pb); | |
139 | skb_put(buf, TLV_SPACE(str_len)); | |
140 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
141 | ||
142 | return buf; | |
143 | } | |
144 | ||
b97bf3fd PL |
145 | static struct sk_buff *cfg_enable_bearer(void) |
146 | { | |
147 | struct tipc_bearer_config *args; | |
148 | ||
149 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_BEARER_CONFIG)) | |
4323add6 | 150 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
b97bf3fd PL |
151 | |
152 | args = (struct tipc_bearer_config *)TLV_DATA(req_tlv_area); | |
153 | if (tipc_enable_bearer(args->name, | |
154 | ntohl(args->detect_scope), | |
155 | ntohl(args->priority))) | |
4323add6 | 156 | return tipc_cfg_reply_error_string("unable to enable bearer"); |
b97bf3fd | 157 | |
4323add6 | 158 | return tipc_cfg_reply_none(); |
b97bf3fd PL |
159 | } |
160 | ||
161 | static struct sk_buff *cfg_disable_bearer(void) | |
162 | { | |
163 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_BEARER_NAME)) | |
4323add6 | 164 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
b97bf3fd PL |
165 | |
166 | if (tipc_disable_bearer((char *)TLV_DATA(req_tlv_area))) | |
4323add6 | 167 | return tipc_cfg_reply_error_string("unable to disable bearer"); |
b97bf3fd | 168 | |
4323add6 | 169 | return tipc_cfg_reply_none(); |
b97bf3fd PL |
170 | } |
171 | ||
172 | static struct sk_buff *cfg_set_own_addr(void) | |
173 | { | |
174 | u32 addr; | |
175 | ||
176 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_NET_ADDR)) | |
4323add6 | 177 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
b97bf3fd | 178 | |
3e6c8cd5 | 179 | addr = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
b97bf3fd | 180 | if (addr == tipc_own_addr) |
4323add6 PL |
181 | return tipc_cfg_reply_none(); |
182 | if (!tipc_addr_node_valid(addr)) | |
183 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE | |
184 | " (node address)"); | |
e100ae92 | 185 | if (tipc_mode == TIPC_NET_MODE) |
4323add6 PL |
186 | return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
187 | " (cannot change node address once assigned)"); | |
e100ae92 | 188 | |
c4307285 | 189 | /* |
e100ae92 AS |
190 | * Must release all spinlocks before calling start_net() because |
191 | * Linux version of TIPC calls eth_media_start() which calls | |
192 | * register_netdevice_notifier() which may block! | |
193 | * | |
194 | * Temporarily releasing the lock should be harmless for non-Linux TIPC, | |
195 | * but Linux version of eth_media_start() should really be reworked | |
196 | * so that it can be called with spinlocks held. | |
197 | */ | |
b97bf3fd PL |
198 | |
199 | spin_unlock_bh(&config_lock); | |
03194379 | 200 | tipc_core_start_net(addr); |
b97bf3fd | 201 | spin_lock_bh(&config_lock); |
4323add6 | 202 | return tipc_cfg_reply_none(); |
b97bf3fd PL |
203 | } |
204 | ||
205 | static struct sk_buff *cfg_set_remote_mng(void) | |
206 | { | |
207 | u32 value; | |
208 | ||
209 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
4323add6 | 210 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
b97bf3fd | 211 | |
3e6c8cd5 | 212 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
b97bf3fd | 213 | tipc_remote_management = (value != 0); |
4323add6 | 214 | return tipc_cfg_reply_none(); |
b97bf3fd PL |
215 | } |
216 | ||
217 | static struct sk_buff *cfg_set_max_publications(void) | |
218 | { | |
219 | u32 value; | |
220 | ||
221 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
4323add6 | 222 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
b97bf3fd | 223 | |
3e6c8cd5 | 224 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
b97bf3fd | 225 | if (value != delimit(value, 1, 65535)) |
4323add6 PL |
226 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE |
227 | " (max publications must be 1-65535)"); | |
b97bf3fd | 228 | tipc_max_publications = value; |
4323add6 | 229 | return tipc_cfg_reply_none(); |
b97bf3fd PL |
230 | } |
231 | ||
232 | static struct sk_buff *cfg_set_max_subscriptions(void) | |
233 | { | |
234 | u32 value; | |
235 | ||
236 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
4323add6 | 237 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
b97bf3fd | 238 | |
3e6c8cd5 | 239 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
b97bf3fd | 240 | if (value != delimit(value, 1, 65535)) |
4323add6 PL |
241 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE |
242 | " (max subscriptions must be 1-65535"); | |
b97bf3fd | 243 | tipc_max_subscriptions = value; |
4323add6 | 244 | return tipc_cfg_reply_none(); |
b97bf3fd PL |
245 | } |
246 | ||
247 | static struct sk_buff *cfg_set_max_ports(void) | |
248 | { | |
b97bf3fd PL |
249 | u32 value; |
250 | ||
251 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
4323add6 | 252 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
3e6c8cd5 | 253 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
e100ae92 AS |
254 | if (value == tipc_max_ports) |
255 | return tipc_cfg_reply_none(); | |
b97bf3fd | 256 | if (value != delimit(value, 127, 65535)) |
4323add6 PL |
257 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE |
258 | " (max ports must be 127-65535)"); | |
e100ae92 | 259 | if (tipc_mode != TIPC_NOT_RUNNING) |
4323add6 | 260 | return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
e100ae92 | 261 | " (cannot change max ports while TIPC is active)"); |
b97bf3fd | 262 | tipc_max_ports = value; |
4323add6 | 263 | return tipc_cfg_reply_none(); |
b97bf3fd PL |
264 | } |
265 | ||
b97bf3fd PL |
266 | static struct sk_buff *cfg_set_max_nodes(void) |
267 | { | |
268 | u32 value; | |
269 | ||
270 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
4323add6 | 271 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
3e6c8cd5 | 272 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
e100ae92 AS |
273 | if (value == tipc_max_nodes) |
274 | return tipc_cfg_reply_none(); | |
b97bf3fd | 275 | if (value != delimit(value, 8, 2047)) |
4323add6 PL |
276 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE |
277 | " (max nodes must be 8-2047)"); | |
e100ae92 AS |
278 | if (tipc_mode == TIPC_NET_MODE) |
279 | return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED | |
280 | " (cannot change max nodes once TIPC has joined a network)"); | |
281 | tipc_max_nodes = value; | |
282 | return tipc_cfg_reply_none(); | |
b97bf3fd PL |
283 | } |
284 | ||
b97bf3fd PL |
285 | static struct sk_buff *cfg_set_netid(void) |
286 | { | |
287 | u32 value; | |
288 | ||
289 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
4323add6 | 290 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
3e6c8cd5 | 291 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
e100ae92 AS |
292 | if (value == tipc_net_id) |
293 | return tipc_cfg_reply_none(); | |
b97bf3fd | 294 | if (value != delimit(value, 1, 9999)) |
4323add6 PL |
295 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE |
296 | " (network id must be 1-9999)"); | |
e100ae92 | 297 | if (tipc_mode == TIPC_NET_MODE) |
4323add6 | 298 | return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
e100ae92 AS |
299 | " (cannot change network id once TIPC has joined a network)"); |
300 | tipc_net_id = value; | |
301 | return tipc_cfg_reply_none(); | |
b97bf3fd PL |
302 | } |
303 | ||
4323add6 PL |
304 | struct sk_buff *tipc_cfg_do_cmd(u32 orig_node, u16 cmd, const void *request_area, |
305 | int request_space, int reply_headroom) | |
b97bf3fd PL |
306 | { |
307 | struct sk_buff *rep_tlv_buf; | |
308 | ||
309 | spin_lock_bh(&config_lock); | |
310 | ||
311 | /* Save request and reply details in a well-known location */ | |
312 | ||
313 | req_tlv_area = request_area; | |
314 | req_tlv_space = request_space; | |
315 | rep_headroom = reply_headroom; | |
316 | ||
317 | /* Check command authorization */ | |
318 | ||
319 | if (likely(orig_node == tipc_own_addr)) { | |
320 | /* command is permitted */ | |
321 | } else if (cmd >= 0x8000) { | |
4323add6 PL |
322 | rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
323 | " (cannot be done remotely)"); | |
b97bf3fd PL |
324 | goto exit; |
325 | } else if (!tipc_remote_management) { | |
4323add6 | 326 | rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NO_REMOTE); |
b97bf3fd PL |
327 | goto exit; |
328 | } | |
329 | else if (cmd >= 0x4000) { | |
330 | u32 domain = 0; | |
331 | ||
4323add6 | 332 | if ((tipc_nametbl_translate(TIPC_ZM_SRV, 0, &domain) == 0) || |
b97bf3fd | 333 | (domain != orig_node)) { |
4323add6 | 334 | rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_ZONE_MSTR); |
b97bf3fd PL |
335 | goto exit; |
336 | } | |
337 | } | |
338 | ||
339 | /* Call appropriate processing routine */ | |
340 | ||
341 | switch (cmd) { | |
342 | case TIPC_CMD_NOOP: | |
4323add6 | 343 | rep_tlv_buf = tipc_cfg_reply_none(); |
b97bf3fd PL |
344 | break; |
345 | case TIPC_CMD_GET_NODES: | |
4323add6 | 346 | rep_tlv_buf = tipc_node_get_nodes(req_tlv_area, req_tlv_space); |
b97bf3fd PL |
347 | break; |
348 | case TIPC_CMD_GET_LINKS: | |
4323add6 | 349 | rep_tlv_buf = tipc_node_get_links(req_tlv_area, req_tlv_space); |
b97bf3fd PL |
350 | break; |
351 | case TIPC_CMD_SHOW_LINK_STATS: | |
4323add6 | 352 | rep_tlv_buf = tipc_link_cmd_show_stats(req_tlv_area, req_tlv_space); |
b97bf3fd PL |
353 | break; |
354 | case TIPC_CMD_RESET_LINK_STATS: | |
4323add6 | 355 | rep_tlv_buf = tipc_link_cmd_reset_stats(req_tlv_area, req_tlv_space); |
b97bf3fd PL |
356 | break; |
357 | case TIPC_CMD_SHOW_NAME_TABLE: | |
4323add6 | 358 | rep_tlv_buf = tipc_nametbl_get(req_tlv_area, req_tlv_space); |
b97bf3fd PL |
359 | break; |
360 | case TIPC_CMD_GET_BEARER_NAMES: | |
4323add6 | 361 | rep_tlv_buf = tipc_bearer_get_names(); |
b97bf3fd PL |
362 | break; |
363 | case TIPC_CMD_GET_MEDIA_NAMES: | |
4323add6 | 364 | rep_tlv_buf = tipc_media_get_names(); |
b97bf3fd PL |
365 | break; |
366 | case TIPC_CMD_SHOW_PORTS: | |
4323add6 | 367 | rep_tlv_buf = tipc_port_get_ports(); |
b97bf3fd | 368 | break; |
b97bf3fd | 369 | case TIPC_CMD_SET_LOG_SIZE: |
025adbe8 | 370 | rep_tlv_buf = tipc_log_resize_cmd(req_tlv_area, req_tlv_space); |
b97bf3fd PL |
371 | break; |
372 | case TIPC_CMD_DUMP_LOG: | |
4323add6 | 373 | rep_tlv_buf = tipc_log_dump(); |
b97bf3fd | 374 | break; |
107e7be6 AS |
375 | case TIPC_CMD_SHOW_STATS: |
376 | rep_tlv_buf = tipc_show_stats(); | |
377 | break; | |
b97bf3fd PL |
378 | case TIPC_CMD_SET_LINK_TOL: |
379 | case TIPC_CMD_SET_LINK_PRI: | |
380 | case TIPC_CMD_SET_LINK_WINDOW: | |
4323add6 | 381 | rep_tlv_buf = tipc_link_cmd_config(req_tlv_area, req_tlv_space, cmd); |
b97bf3fd PL |
382 | break; |
383 | case TIPC_CMD_ENABLE_BEARER: | |
384 | rep_tlv_buf = cfg_enable_bearer(); | |
385 | break; | |
386 | case TIPC_CMD_DISABLE_BEARER: | |
387 | rep_tlv_buf = cfg_disable_bearer(); | |
388 | break; | |
389 | case TIPC_CMD_SET_NODE_ADDR: | |
390 | rep_tlv_buf = cfg_set_own_addr(); | |
391 | break; | |
392 | case TIPC_CMD_SET_REMOTE_MNG: | |
393 | rep_tlv_buf = cfg_set_remote_mng(); | |
394 | break; | |
395 | case TIPC_CMD_SET_MAX_PORTS: | |
396 | rep_tlv_buf = cfg_set_max_ports(); | |
397 | break; | |
398 | case TIPC_CMD_SET_MAX_PUBL: | |
399 | rep_tlv_buf = cfg_set_max_publications(); | |
400 | break; | |
401 | case TIPC_CMD_SET_MAX_SUBSCR: | |
402 | rep_tlv_buf = cfg_set_max_subscriptions(); | |
403 | break; | |
b97bf3fd PL |
404 | case TIPC_CMD_SET_MAX_NODES: |
405 | rep_tlv_buf = cfg_set_max_nodes(); | |
406 | break; | |
b97bf3fd PL |
407 | case TIPC_CMD_SET_NETID: |
408 | rep_tlv_buf = cfg_set_netid(); | |
409 | break; | |
410 | case TIPC_CMD_GET_REMOTE_MNG: | |
4323add6 | 411 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_remote_management); |
b97bf3fd PL |
412 | break; |
413 | case TIPC_CMD_GET_MAX_PORTS: | |
4323add6 | 414 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_ports); |
b97bf3fd PL |
415 | break; |
416 | case TIPC_CMD_GET_MAX_PUBL: | |
4323add6 | 417 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_publications); |
b97bf3fd PL |
418 | break; |
419 | case TIPC_CMD_GET_MAX_SUBSCR: | |
4323add6 | 420 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_subscriptions); |
b97bf3fd | 421 | break; |
b97bf3fd | 422 | case TIPC_CMD_GET_MAX_NODES: |
4323add6 | 423 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_nodes); |
b97bf3fd | 424 | break; |
b97bf3fd | 425 | case TIPC_CMD_GET_NETID: |
4323add6 | 426 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_net_id); |
b97bf3fd | 427 | break; |
59f0c452 AS |
428 | case TIPC_CMD_NOT_NET_ADMIN: |
429 | rep_tlv_buf = | |
430 | tipc_cfg_reply_error_string(TIPC_CFG_NOT_NET_ADMIN); | |
431 | break; | |
51f98a8d AS |
432 | case TIPC_CMD_SET_MAX_ZONES: |
433 | case TIPC_CMD_GET_MAX_ZONES: | |
08c80e9a AS |
434 | case TIPC_CMD_SET_MAX_SLAVES: |
435 | case TIPC_CMD_GET_MAX_SLAVES: | |
8f92df6a AS |
436 | case TIPC_CMD_SET_MAX_CLUSTERS: |
437 | case TIPC_CMD_GET_MAX_CLUSTERS: | |
51f98a8d AS |
438 | rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
439 | " (obsolete command)"); | |
440 | break; | |
b97bf3fd | 441 | default: |
53cfd1e1 AS |
442 | rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
443 | " (unknown command)"); | |
b97bf3fd PL |
444 | break; |
445 | } | |
446 | ||
447 | /* Return reply buffer */ | |
448 | exit: | |
449 | spin_unlock_bh(&config_lock); | |
450 | return rep_tlv_buf; | |
451 | } | |
452 | ||
453 | static void cfg_named_msg_event(void *userdata, | |
454 | u32 port_ref, | |
455 | struct sk_buff **buf, | |
456 | const unchar *msg, | |
457 | u32 size, | |
c4307285 | 458 | u32 importance, |
b97bf3fd PL |
459 | struct tipc_portid const *orig, |
460 | struct tipc_name_seq const *dest) | |
461 | { | |
462 | struct tipc_cfg_msg_hdr *req_hdr; | |
463 | struct tipc_cfg_msg_hdr *rep_hdr; | |
464 | struct sk_buff *rep_buf; | |
465 | ||
466 | /* Validate configuration message header (ignore invalid message) */ | |
467 | ||
468 | req_hdr = (struct tipc_cfg_msg_hdr *)msg; | |
469 | if ((size < sizeof(*req_hdr)) || | |
470 | (size != TCM_ALIGN(ntohl(req_hdr->tcm_len))) || | |
471 | (ntohs(req_hdr->tcm_flags) != TCM_F_REQUEST)) { | |
a10bd924 | 472 | warn("Invalid configuration message discarded\n"); |
b97bf3fd PL |
473 | return; |
474 | } | |
475 | ||
476 | /* Generate reply for request (if can't, return request) */ | |
477 | ||
4323add6 | 478 | rep_buf = tipc_cfg_do_cmd(orig->node, |
c4307285 | 479 | ntohs(req_hdr->tcm_type), |
4323add6 PL |
480 | msg + sizeof(*req_hdr), |
481 | size - sizeof(*req_hdr), | |
482 | BUF_HEADROOM + MAX_H_SIZE + sizeof(*rep_hdr)); | |
b97bf3fd PL |
483 | if (rep_buf) { |
484 | skb_push(rep_buf, sizeof(*rep_hdr)); | |
485 | rep_hdr = (struct tipc_cfg_msg_hdr *)rep_buf->data; | |
486 | memcpy(rep_hdr, req_hdr, sizeof(*rep_hdr)); | |
487 | rep_hdr->tcm_len = htonl(rep_buf->len); | |
488 | rep_hdr->tcm_flags &= htons(~TCM_F_REQUEST); | |
489 | } else { | |
490 | rep_buf = *buf; | |
491 | *buf = NULL; | |
492 | } | |
493 | ||
494 | /* NEED TO ADD CODE TO HANDLE FAILED SEND (SUCH AS CONGESTION) */ | |
495 | tipc_send_buf2port(port_ref, orig, rep_buf, rep_buf->len); | |
496 | } | |
497 | ||
4323add6 | 498 | int tipc_cfg_init(void) |
b97bf3fd PL |
499 | { |
500 | struct tipc_name_seq seq; | |
501 | int res; | |
502 | ||
b0c1e928 | 503 | res = tipc_createport(NULL, TIPC_CRITICAL_IMPORTANCE, |
b97bf3fd PL |
504 | NULL, NULL, NULL, |
505 | NULL, cfg_named_msg_event, NULL, | |
7a488fd3 | 506 | NULL, &config_port_ref); |
b97bf3fd PL |
507 | if (res) |
508 | goto failed; | |
509 | ||
510 | seq.type = TIPC_CFG_SRV; | |
511 | seq.lower = seq.upper = tipc_own_addr; | |
7a488fd3 | 512 | res = tipc_nametbl_publish_rsv(config_port_ref, TIPC_ZONE_SCOPE, &seq); |
b97bf3fd PL |
513 | if (res) |
514 | goto failed; | |
515 | ||
516 | return 0; | |
517 | ||
518 | failed: | |
519 | err("Unable to create configuration service\n"); | |
b97bf3fd PL |
520 | return res; |
521 | } | |
522 | ||
4323add6 | 523 | void tipc_cfg_stop(void) |
b97bf3fd | 524 | { |
7a488fd3 AS |
525 | if (config_port_ref) { |
526 | tipc_deleteport(config_port_ref); | |
527 | config_port_ref = 0; | |
b97bf3fd PL |
528 | } |
529 | } |