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" |
d265fef6 | 41 | #include "user_reg.h" |
b97bf3fd | 42 | #include "config.h" |
b97bf3fd | 43 | |
b97bf3fd PL |
44 | struct manager { |
45 | u32 user_ref; | |
46 | u32 port_ref; | |
b97bf3fd PL |
47 | }; |
48 | ||
49 | static struct manager mng = { 0}; | |
50 | ||
34af946a | 51 | static DEFINE_SPINLOCK(config_lock); |
b97bf3fd PL |
52 | |
53 | static const void *req_tlv_area; /* request message TLV area */ | |
54 | static int req_tlv_space; /* request message TLV area size */ | |
55 | static int rep_headroom; /* reply message headroom to use */ | |
56 | ||
57 | ||
4323add6 | 58 | struct sk_buff *tipc_cfg_reply_alloc(int payload_size) |
b97bf3fd PL |
59 | { |
60 | struct sk_buff *buf; | |
61 | ||
62 | buf = alloc_skb(rep_headroom + payload_size, GFP_ATOMIC); | |
63 | if (buf) | |
64 | skb_reserve(buf, rep_headroom); | |
65 | return buf; | |
66 | } | |
67 | ||
c4307285 | 68 | int tipc_cfg_append_tlv(struct sk_buff *buf, int tlv_type, |
4323add6 | 69 | void *tlv_data, int tlv_data_size) |
b97bf3fd | 70 | { |
27a884dc | 71 | struct tlv_desc *tlv = (struct tlv_desc *)skb_tail_pointer(buf); |
b97bf3fd PL |
72 | int new_tlv_space = TLV_SPACE(tlv_data_size); |
73 | ||
74 | if (skb_tailroom(buf) < new_tlv_space) { | |
4323add6 | 75 | dbg("tipc_cfg_append_tlv unable to append TLV\n"); |
b97bf3fd PL |
76 | return 0; |
77 | } | |
78 | skb_put(buf, new_tlv_space); | |
79 | tlv->tlv_type = htons(tlv_type); | |
80 | tlv->tlv_len = htons(TLV_LENGTH(tlv_data_size)); | |
81 | if (tlv_data_size && tlv_data) | |
82 | memcpy(TLV_DATA(tlv), tlv_data, tlv_data_size); | |
83 | return 1; | |
84 | } | |
85 | ||
31e3c3f6 | 86 | static struct sk_buff *tipc_cfg_reply_unsigned_type(u16 tlv_type, u32 value) |
b97bf3fd PL |
87 | { |
88 | struct sk_buff *buf; | |
3e6c8cd5 | 89 | __be32 value_net; |
b97bf3fd | 90 | |
4323add6 | 91 | buf = tipc_cfg_reply_alloc(TLV_SPACE(sizeof(value))); |
b97bf3fd PL |
92 | if (buf) { |
93 | value_net = htonl(value); | |
c4307285 | 94 | tipc_cfg_append_tlv(buf, tlv_type, &value_net, |
4323add6 | 95 | sizeof(value_net)); |
b97bf3fd PL |
96 | } |
97 | return buf; | |
98 | } | |
99 | ||
31e3c3f6 | 100 | static struct sk_buff *tipc_cfg_reply_unsigned(u32 value) |
101 | { | |
102 | return tipc_cfg_reply_unsigned_type(TIPC_TLV_UNSIGNED, value); | |
103 | } | |
104 | ||
4323add6 | 105 | struct sk_buff *tipc_cfg_reply_string_type(u16 tlv_type, char *string) |
b97bf3fd PL |
106 | { |
107 | struct sk_buff *buf; | |
108 | int string_len = strlen(string) + 1; | |
109 | ||
4323add6 | 110 | buf = tipc_cfg_reply_alloc(TLV_SPACE(string_len)); |
b97bf3fd | 111 | if (buf) |
4323add6 | 112 | tipc_cfg_append_tlv(buf, tlv_type, string, string_len); |
b97bf3fd PL |
113 | return buf; |
114 | } | |
115 | ||
107e7be6 AS |
116 | #define MAX_STATS_INFO 2000 |
117 | ||
118 | static struct sk_buff *tipc_show_stats(void) | |
119 | { | |
120 | struct sk_buff *buf; | |
121 | struct tlv_desc *rep_tlv; | |
122 | struct print_buf pb; | |
123 | int str_len; | |
124 | u32 value; | |
125 | ||
126 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
127 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); | |
128 | ||
129 | value = ntohl(*(u32 *)TLV_DATA(req_tlv_area)); | |
130 | if (value != 0) | |
131 | return tipc_cfg_reply_error_string("unsupported argument"); | |
132 | ||
133 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_STATS_INFO)); | |
134 | if (buf == NULL) | |
135 | return NULL; | |
136 | ||
137 | rep_tlv = (struct tlv_desc *)buf->data; | |
138 | tipc_printbuf_init(&pb, (char *)TLV_DATA(rep_tlv), MAX_STATS_INFO); | |
139 | ||
140 | tipc_printf(&pb, "TIPC version " TIPC_MOD_VER "\n"); | |
141 | ||
142 | /* Use additional tipc_printf()'s to return more info ... */ | |
143 | ||
144 | str_len = tipc_printbuf_validate(&pb); | |
145 | skb_put(buf, TLV_SPACE(str_len)); | |
146 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
147 | ||
148 | return buf; | |
149 | } | |
150 | ||
b97bf3fd PL |
151 | static struct sk_buff *cfg_enable_bearer(void) |
152 | { | |
153 | struct tipc_bearer_config *args; | |
154 | ||
155 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_BEARER_CONFIG)) | |
4323add6 | 156 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
b97bf3fd PL |
157 | |
158 | args = (struct tipc_bearer_config *)TLV_DATA(req_tlv_area); | |
159 | if (tipc_enable_bearer(args->name, | |
160 | ntohl(args->detect_scope), | |
161 | ntohl(args->priority))) | |
4323add6 | 162 | return tipc_cfg_reply_error_string("unable to enable bearer"); |
b97bf3fd | 163 | |
4323add6 | 164 | return tipc_cfg_reply_none(); |
b97bf3fd PL |
165 | } |
166 | ||
167 | static struct sk_buff *cfg_disable_bearer(void) | |
168 | { | |
169 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_BEARER_NAME)) | |
4323add6 | 170 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
b97bf3fd PL |
171 | |
172 | if (tipc_disable_bearer((char *)TLV_DATA(req_tlv_area))) | |
4323add6 | 173 | return tipc_cfg_reply_error_string("unable to disable bearer"); |
b97bf3fd | 174 | |
4323add6 | 175 | return tipc_cfg_reply_none(); |
b97bf3fd PL |
176 | } |
177 | ||
178 | static struct sk_buff *cfg_set_own_addr(void) | |
179 | { | |
180 | u32 addr; | |
181 | ||
182 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_NET_ADDR)) | |
4323add6 | 183 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
b97bf3fd | 184 | |
3e6c8cd5 | 185 | addr = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
b97bf3fd | 186 | if (addr == tipc_own_addr) |
4323add6 PL |
187 | return tipc_cfg_reply_none(); |
188 | if (!tipc_addr_node_valid(addr)) | |
189 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE | |
190 | " (node address)"); | |
e100ae92 | 191 | if (tipc_mode == TIPC_NET_MODE) |
4323add6 PL |
192 | return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
193 | " (cannot change node address once assigned)"); | |
e100ae92 | 194 | |
c4307285 | 195 | /* |
e100ae92 AS |
196 | * Must release all spinlocks before calling start_net() because |
197 | * Linux version of TIPC calls eth_media_start() which calls | |
198 | * register_netdevice_notifier() which may block! | |
199 | * | |
200 | * Temporarily releasing the lock should be harmless for non-Linux TIPC, | |
201 | * but Linux version of eth_media_start() should really be reworked | |
202 | * so that it can be called with spinlocks held. | |
203 | */ | |
b97bf3fd PL |
204 | |
205 | spin_unlock_bh(&config_lock); | |
03194379 | 206 | tipc_core_start_net(addr); |
b97bf3fd | 207 | spin_lock_bh(&config_lock); |
4323add6 | 208 | return tipc_cfg_reply_none(); |
b97bf3fd PL |
209 | } |
210 | ||
211 | static struct sk_buff *cfg_set_remote_mng(void) | |
212 | { | |
213 | u32 value; | |
214 | ||
215 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
4323add6 | 216 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
b97bf3fd | 217 | |
3e6c8cd5 | 218 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
b97bf3fd | 219 | tipc_remote_management = (value != 0); |
4323add6 | 220 | return tipc_cfg_reply_none(); |
b97bf3fd PL |
221 | } |
222 | ||
223 | static struct sk_buff *cfg_set_max_publications(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 | if (value != delimit(value, 1, 65535)) |
4323add6 PL |
232 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE |
233 | " (max publications must be 1-65535)"); | |
b97bf3fd | 234 | tipc_max_publications = value; |
4323add6 | 235 | return tipc_cfg_reply_none(); |
b97bf3fd PL |
236 | } |
237 | ||
238 | static struct sk_buff *cfg_set_max_subscriptions(void) | |
239 | { | |
240 | u32 value; | |
241 | ||
242 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
4323add6 | 243 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
b97bf3fd | 244 | |
3e6c8cd5 | 245 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
b97bf3fd | 246 | if (value != delimit(value, 1, 65535)) |
4323add6 PL |
247 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE |
248 | " (max subscriptions must be 1-65535"); | |
b97bf3fd | 249 | tipc_max_subscriptions = value; |
4323add6 | 250 | return tipc_cfg_reply_none(); |
b97bf3fd PL |
251 | } |
252 | ||
253 | static struct sk_buff *cfg_set_max_ports(void) | |
254 | { | |
b97bf3fd PL |
255 | u32 value; |
256 | ||
257 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
4323add6 | 258 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
3e6c8cd5 | 259 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
e100ae92 AS |
260 | if (value == tipc_max_ports) |
261 | return tipc_cfg_reply_none(); | |
b97bf3fd | 262 | if (value != delimit(value, 127, 65535)) |
4323add6 PL |
263 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE |
264 | " (max ports must be 127-65535)"); | |
e100ae92 | 265 | if (tipc_mode != TIPC_NOT_RUNNING) |
4323add6 | 266 | return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
e100ae92 | 267 | " (cannot change max ports while TIPC is active)"); |
b97bf3fd | 268 | tipc_max_ports = value; |
4323add6 | 269 | return tipc_cfg_reply_none(); |
b97bf3fd PL |
270 | } |
271 | ||
b97bf3fd PL |
272 | static struct sk_buff *cfg_set_max_clusters(void) |
273 | { | |
274 | u32 value; | |
275 | ||
276 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
4323add6 | 277 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
3e6c8cd5 | 278 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
e100ae92 AS |
279 | if (value != delimit(value, 1, 1)) |
280 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE | |
4323add6 PL |
281 | " (max clusters fixed at 1)"); |
282 | return tipc_cfg_reply_none(); | |
b97bf3fd PL |
283 | } |
284 | ||
285 | static struct sk_buff *cfg_set_max_nodes(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_max_nodes) |
293 | return tipc_cfg_reply_none(); | |
b97bf3fd | 294 | if (value != delimit(value, 8, 2047)) |
4323add6 PL |
295 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE |
296 | " (max nodes must be 8-2047)"); | |
e100ae92 AS |
297 | if (tipc_mode == TIPC_NET_MODE) |
298 | return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED | |
299 | " (cannot change max nodes once TIPC has joined a network)"); | |
300 | tipc_max_nodes = value; | |
301 | return tipc_cfg_reply_none(); | |
b97bf3fd PL |
302 | } |
303 | ||
b97bf3fd PL |
304 | static struct sk_buff *cfg_set_netid(void) |
305 | { | |
306 | u32 value; | |
307 | ||
308 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
4323add6 | 309 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
3e6c8cd5 | 310 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
e100ae92 AS |
311 | if (value == tipc_net_id) |
312 | return tipc_cfg_reply_none(); | |
b97bf3fd | 313 | if (value != delimit(value, 1, 9999)) |
4323add6 PL |
314 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE |
315 | " (network id must be 1-9999)"); | |
e100ae92 | 316 | if (tipc_mode == TIPC_NET_MODE) |
4323add6 | 317 | return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
e100ae92 AS |
318 | " (cannot change network id once TIPC has joined a network)"); |
319 | tipc_net_id = value; | |
320 | return tipc_cfg_reply_none(); | |
b97bf3fd PL |
321 | } |
322 | ||
4323add6 PL |
323 | struct sk_buff *tipc_cfg_do_cmd(u32 orig_node, u16 cmd, const void *request_area, |
324 | int request_space, int reply_headroom) | |
b97bf3fd PL |
325 | { |
326 | struct sk_buff *rep_tlv_buf; | |
327 | ||
328 | spin_lock_bh(&config_lock); | |
329 | ||
330 | /* Save request and reply details in a well-known location */ | |
331 | ||
332 | req_tlv_area = request_area; | |
333 | req_tlv_space = request_space; | |
334 | rep_headroom = reply_headroom; | |
335 | ||
336 | /* Check command authorization */ | |
337 | ||
338 | if (likely(orig_node == tipc_own_addr)) { | |
339 | /* command is permitted */ | |
340 | } else if (cmd >= 0x8000) { | |
4323add6 PL |
341 | rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
342 | " (cannot be done remotely)"); | |
b97bf3fd PL |
343 | goto exit; |
344 | } else if (!tipc_remote_management) { | |
4323add6 | 345 | rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NO_REMOTE); |
b97bf3fd PL |
346 | goto exit; |
347 | } | |
348 | else if (cmd >= 0x4000) { | |
349 | u32 domain = 0; | |
350 | ||
4323add6 | 351 | if ((tipc_nametbl_translate(TIPC_ZM_SRV, 0, &domain) == 0) || |
b97bf3fd | 352 | (domain != orig_node)) { |
4323add6 | 353 | rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_ZONE_MSTR); |
b97bf3fd PL |
354 | goto exit; |
355 | } | |
356 | } | |
357 | ||
358 | /* Call appropriate processing routine */ | |
359 | ||
360 | switch (cmd) { | |
361 | case TIPC_CMD_NOOP: | |
4323add6 | 362 | rep_tlv_buf = tipc_cfg_reply_none(); |
b97bf3fd PL |
363 | break; |
364 | case TIPC_CMD_GET_NODES: | |
4323add6 | 365 | rep_tlv_buf = tipc_node_get_nodes(req_tlv_area, req_tlv_space); |
b97bf3fd PL |
366 | break; |
367 | case TIPC_CMD_GET_LINKS: | |
4323add6 | 368 | rep_tlv_buf = tipc_node_get_links(req_tlv_area, req_tlv_space); |
b97bf3fd PL |
369 | break; |
370 | case TIPC_CMD_SHOW_LINK_STATS: | |
4323add6 | 371 | rep_tlv_buf = tipc_link_cmd_show_stats(req_tlv_area, req_tlv_space); |
b97bf3fd PL |
372 | break; |
373 | case TIPC_CMD_RESET_LINK_STATS: | |
4323add6 | 374 | rep_tlv_buf = tipc_link_cmd_reset_stats(req_tlv_area, req_tlv_space); |
b97bf3fd PL |
375 | break; |
376 | case TIPC_CMD_SHOW_NAME_TABLE: | |
4323add6 | 377 | rep_tlv_buf = tipc_nametbl_get(req_tlv_area, req_tlv_space); |
b97bf3fd PL |
378 | break; |
379 | case TIPC_CMD_GET_BEARER_NAMES: | |
4323add6 | 380 | rep_tlv_buf = tipc_bearer_get_names(); |
b97bf3fd PL |
381 | break; |
382 | case TIPC_CMD_GET_MEDIA_NAMES: | |
4323add6 | 383 | rep_tlv_buf = tipc_media_get_names(); |
b97bf3fd PL |
384 | break; |
385 | case TIPC_CMD_SHOW_PORTS: | |
4323add6 | 386 | rep_tlv_buf = tipc_port_get_ports(); |
b97bf3fd | 387 | break; |
b97bf3fd | 388 | case TIPC_CMD_SET_LOG_SIZE: |
025adbe8 | 389 | rep_tlv_buf = tipc_log_resize_cmd(req_tlv_area, req_tlv_space); |
b97bf3fd PL |
390 | break; |
391 | case TIPC_CMD_DUMP_LOG: | |
4323add6 | 392 | rep_tlv_buf = tipc_log_dump(); |
b97bf3fd | 393 | break; |
107e7be6 AS |
394 | case TIPC_CMD_SHOW_STATS: |
395 | rep_tlv_buf = tipc_show_stats(); | |
396 | break; | |
b97bf3fd PL |
397 | case TIPC_CMD_SET_LINK_TOL: |
398 | case TIPC_CMD_SET_LINK_PRI: | |
399 | case TIPC_CMD_SET_LINK_WINDOW: | |
4323add6 | 400 | rep_tlv_buf = tipc_link_cmd_config(req_tlv_area, req_tlv_space, cmd); |
b97bf3fd PL |
401 | break; |
402 | case TIPC_CMD_ENABLE_BEARER: | |
403 | rep_tlv_buf = cfg_enable_bearer(); | |
404 | break; | |
405 | case TIPC_CMD_DISABLE_BEARER: | |
406 | rep_tlv_buf = cfg_disable_bearer(); | |
407 | break; | |
408 | case TIPC_CMD_SET_NODE_ADDR: | |
409 | rep_tlv_buf = cfg_set_own_addr(); | |
410 | break; | |
411 | case TIPC_CMD_SET_REMOTE_MNG: | |
412 | rep_tlv_buf = cfg_set_remote_mng(); | |
413 | break; | |
414 | case TIPC_CMD_SET_MAX_PORTS: | |
415 | rep_tlv_buf = cfg_set_max_ports(); | |
416 | break; | |
417 | case TIPC_CMD_SET_MAX_PUBL: | |
418 | rep_tlv_buf = cfg_set_max_publications(); | |
419 | break; | |
420 | case TIPC_CMD_SET_MAX_SUBSCR: | |
421 | rep_tlv_buf = cfg_set_max_subscriptions(); | |
422 | break; | |
b97bf3fd PL |
423 | case TIPC_CMD_SET_MAX_CLUSTERS: |
424 | rep_tlv_buf = cfg_set_max_clusters(); | |
425 | break; | |
426 | case TIPC_CMD_SET_MAX_NODES: | |
427 | rep_tlv_buf = cfg_set_max_nodes(); | |
428 | break; | |
b97bf3fd PL |
429 | case TIPC_CMD_SET_NETID: |
430 | rep_tlv_buf = cfg_set_netid(); | |
431 | break; | |
432 | case TIPC_CMD_GET_REMOTE_MNG: | |
4323add6 | 433 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_remote_management); |
b97bf3fd PL |
434 | break; |
435 | case TIPC_CMD_GET_MAX_PORTS: | |
4323add6 | 436 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_ports); |
b97bf3fd PL |
437 | break; |
438 | case TIPC_CMD_GET_MAX_PUBL: | |
4323add6 | 439 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_publications); |
b97bf3fd PL |
440 | break; |
441 | case TIPC_CMD_GET_MAX_SUBSCR: | |
4323add6 | 442 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_subscriptions); |
b97bf3fd | 443 | break; |
b97bf3fd | 444 | case TIPC_CMD_GET_MAX_CLUSTERS: |
4323add6 | 445 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_clusters); |
b97bf3fd PL |
446 | break; |
447 | case TIPC_CMD_GET_MAX_NODES: | |
4323add6 | 448 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_nodes); |
b97bf3fd | 449 | break; |
b97bf3fd | 450 | case TIPC_CMD_GET_NETID: |
4323add6 | 451 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_net_id); |
b97bf3fd | 452 | break; |
59f0c452 AS |
453 | case TIPC_CMD_NOT_NET_ADMIN: |
454 | rep_tlv_buf = | |
455 | tipc_cfg_reply_error_string(TIPC_CFG_NOT_NET_ADMIN); | |
456 | break; | |
51f98a8d AS |
457 | case TIPC_CMD_SET_MAX_ZONES: |
458 | case TIPC_CMD_GET_MAX_ZONES: | |
08c80e9a AS |
459 | case TIPC_CMD_SET_MAX_SLAVES: |
460 | case TIPC_CMD_GET_MAX_SLAVES: | |
51f98a8d AS |
461 | rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
462 | " (obsolete command)"); | |
463 | break; | |
b97bf3fd | 464 | default: |
53cfd1e1 AS |
465 | rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
466 | " (unknown command)"); | |
b97bf3fd PL |
467 | break; |
468 | } | |
469 | ||
470 | /* Return reply buffer */ | |
471 | exit: | |
472 | spin_unlock_bh(&config_lock); | |
473 | return rep_tlv_buf; | |
474 | } | |
475 | ||
476 | static void cfg_named_msg_event(void *userdata, | |
477 | u32 port_ref, | |
478 | struct sk_buff **buf, | |
479 | const unchar *msg, | |
480 | u32 size, | |
c4307285 | 481 | u32 importance, |
b97bf3fd PL |
482 | struct tipc_portid const *orig, |
483 | struct tipc_name_seq const *dest) | |
484 | { | |
485 | struct tipc_cfg_msg_hdr *req_hdr; | |
486 | struct tipc_cfg_msg_hdr *rep_hdr; | |
487 | struct sk_buff *rep_buf; | |
488 | ||
489 | /* Validate configuration message header (ignore invalid message) */ | |
490 | ||
491 | req_hdr = (struct tipc_cfg_msg_hdr *)msg; | |
492 | if ((size < sizeof(*req_hdr)) || | |
493 | (size != TCM_ALIGN(ntohl(req_hdr->tcm_len))) || | |
494 | (ntohs(req_hdr->tcm_flags) != TCM_F_REQUEST)) { | |
a10bd924 | 495 | warn("Invalid configuration message discarded\n"); |
b97bf3fd PL |
496 | return; |
497 | } | |
498 | ||
499 | /* Generate reply for request (if can't, return request) */ | |
500 | ||
4323add6 | 501 | rep_buf = tipc_cfg_do_cmd(orig->node, |
c4307285 | 502 | ntohs(req_hdr->tcm_type), |
4323add6 PL |
503 | msg + sizeof(*req_hdr), |
504 | size - sizeof(*req_hdr), | |
505 | BUF_HEADROOM + MAX_H_SIZE + sizeof(*rep_hdr)); | |
b97bf3fd PL |
506 | if (rep_buf) { |
507 | skb_push(rep_buf, sizeof(*rep_hdr)); | |
508 | rep_hdr = (struct tipc_cfg_msg_hdr *)rep_buf->data; | |
509 | memcpy(rep_hdr, req_hdr, sizeof(*rep_hdr)); | |
510 | rep_hdr->tcm_len = htonl(rep_buf->len); | |
511 | rep_hdr->tcm_flags &= htons(~TCM_F_REQUEST); | |
512 | } else { | |
513 | rep_buf = *buf; | |
514 | *buf = NULL; | |
515 | } | |
516 | ||
517 | /* NEED TO ADD CODE TO HANDLE FAILED SEND (SUCH AS CONGESTION) */ | |
518 | tipc_send_buf2port(port_ref, orig, rep_buf, rep_buf->len); | |
519 | } | |
520 | ||
4323add6 | 521 | int tipc_cfg_init(void) |
b97bf3fd PL |
522 | { |
523 | struct tipc_name_seq seq; | |
524 | int res; | |
525 | ||
a5c2af99 | 526 | res = tipc_attach(&mng.user_ref); |
b97bf3fd PL |
527 | if (res) |
528 | goto failed; | |
529 | ||
1fc54d8f | 530 | res = tipc_createport(mng.user_ref, NULL, TIPC_CRITICAL_IMPORTANCE, |
b97bf3fd PL |
531 | NULL, NULL, NULL, |
532 | NULL, cfg_named_msg_event, NULL, | |
533 | NULL, &mng.port_ref); | |
534 | if (res) | |
535 | goto failed; | |
536 | ||
537 | seq.type = TIPC_CFG_SRV; | |
538 | seq.lower = seq.upper = tipc_own_addr; | |
4323add6 | 539 | res = tipc_nametbl_publish_rsv(mng.port_ref, TIPC_ZONE_SCOPE, &seq); |
b97bf3fd PL |
540 | if (res) |
541 | goto failed; | |
542 | ||
543 | return 0; | |
544 | ||
545 | failed: | |
546 | err("Unable to create configuration service\n"); | |
547 | tipc_detach(mng.user_ref); | |
548 | mng.user_ref = 0; | |
549 | return res; | |
550 | } | |
551 | ||
4323add6 | 552 | void tipc_cfg_stop(void) |
b97bf3fd PL |
553 | { |
554 | if (mng.user_ref) { | |
555 | tipc_detach(mng.user_ref); | |
556 | mng.user_ref = 0; | |
557 | } | |
558 | } |