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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 |
f831c963 | 5 | * Copyright (c) 2004-2007, 2010-2011, 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 | 38 | #include "port.h" |
b97bf3fd | 39 | #include "name_table.h" |
b97bf3fd | 40 | #include "config.h" |
b97bf3fd | 41 | |
7a488fd3 | 42 | static u32 config_port_ref; |
b97bf3fd | 43 | |
34af946a | 44 | static DEFINE_SPINLOCK(config_lock); |
b97bf3fd PL |
45 | |
46 | static const void *req_tlv_area; /* request message TLV area */ | |
47 | static int req_tlv_space; /* request message TLV area size */ | |
48 | static int rep_headroom; /* reply message headroom to use */ | |
49 | ||
50 | ||
4323add6 | 51 | struct sk_buff *tipc_cfg_reply_alloc(int payload_size) |
b97bf3fd PL |
52 | { |
53 | struct sk_buff *buf; | |
54 | ||
55 | buf = alloc_skb(rep_headroom + payload_size, GFP_ATOMIC); | |
56 | if (buf) | |
57 | skb_reserve(buf, rep_headroom); | |
58 | return buf; | |
59 | } | |
60 | ||
c4307285 | 61 | int tipc_cfg_append_tlv(struct sk_buff *buf, int tlv_type, |
4323add6 | 62 | void *tlv_data, int tlv_data_size) |
b97bf3fd | 63 | { |
27a884dc | 64 | struct tlv_desc *tlv = (struct tlv_desc *)skb_tail_pointer(buf); |
b97bf3fd PL |
65 | int new_tlv_space = TLV_SPACE(tlv_data_size); |
66 | ||
b29f1428 | 67 | if (skb_tailroom(buf) < new_tlv_space) |
b97bf3fd | 68 | return 0; |
b97bf3fd PL |
69 | skb_put(buf, new_tlv_space); |
70 | tlv->tlv_type = htons(tlv_type); | |
71 | tlv->tlv_len = htons(TLV_LENGTH(tlv_data_size)); | |
72 | if (tlv_data_size && tlv_data) | |
73 | memcpy(TLV_DATA(tlv), tlv_data, tlv_data_size); | |
74 | return 1; | |
75 | } | |
76 | ||
31e3c3f6 | 77 | static struct sk_buff *tipc_cfg_reply_unsigned_type(u16 tlv_type, u32 value) |
b97bf3fd PL |
78 | { |
79 | struct sk_buff *buf; | |
3e6c8cd5 | 80 | __be32 value_net; |
b97bf3fd | 81 | |
4323add6 | 82 | buf = tipc_cfg_reply_alloc(TLV_SPACE(sizeof(value))); |
b97bf3fd PL |
83 | if (buf) { |
84 | value_net = htonl(value); | |
c4307285 | 85 | tipc_cfg_append_tlv(buf, tlv_type, &value_net, |
4323add6 | 86 | sizeof(value_net)); |
b97bf3fd PL |
87 | } |
88 | return buf; | |
89 | } | |
90 | ||
31e3c3f6 | 91 | static struct sk_buff *tipc_cfg_reply_unsigned(u32 value) |
92 | { | |
93 | return tipc_cfg_reply_unsigned_type(TIPC_TLV_UNSIGNED, value); | |
94 | } | |
95 | ||
4323add6 | 96 | struct sk_buff *tipc_cfg_reply_string_type(u16 tlv_type, char *string) |
b97bf3fd PL |
97 | { |
98 | struct sk_buff *buf; | |
99 | int string_len = strlen(string) + 1; | |
100 | ||
4323add6 | 101 | buf = tipc_cfg_reply_alloc(TLV_SPACE(string_len)); |
b97bf3fd | 102 | if (buf) |
4323add6 | 103 | tipc_cfg_append_tlv(buf, tlv_type, string, string_len); |
b97bf3fd PL |
104 | return buf; |
105 | } | |
106 | ||
107e7be6 AS |
107 | #define MAX_STATS_INFO 2000 |
108 | ||
109 | static struct sk_buff *tipc_show_stats(void) | |
110 | { | |
111 | struct sk_buff *buf; | |
112 | struct tlv_desc *rep_tlv; | |
113 | struct print_buf pb; | |
114 | int str_len; | |
115 | u32 value; | |
116 | ||
117 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
118 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); | |
119 | ||
120 | value = ntohl(*(u32 *)TLV_DATA(req_tlv_area)); | |
121 | if (value != 0) | |
122 | return tipc_cfg_reply_error_string("unsupported argument"); | |
123 | ||
124 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_STATS_INFO)); | |
125 | if (buf == NULL) | |
126 | return NULL; | |
127 | ||
128 | rep_tlv = (struct tlv_desc *)buf->data; | |
129 | tipc_printbuf_init(&pb, (char *)TLV_DATA(rep_tlv), MAX_STATS_INFO); | |
130 | ||
131 | tipc_printf(&pb, "TIPC version " TIPC_MOD_VER "\n"); | |
132 | ||
133 | /* Use additional tipc_printf()'s to return more info ... */ | |
107e7be6 AS |
134 | str_len = tipc_printbuf_validate(&pb); |
135 | skb_put(buf, TLV_SPACE(str_len)); | |
136 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
137 | ||
138 | return buf; | |
139 | } | |
140 | ||
b97bf3fd PL |
141 | static struct sk_buff *cfg_enable_bearer(void) |
142 | { | |
143 | struct tipc_bearer_config *args; | |
144 | ||
145 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_BEARER_CONFIG)) | |
4323add6 | 146 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
b97bf3fd PL |
147 | |
148 | args = (struct tipc_bearer_config *)TLV_DATA(req_tlv_area); | |
149 | if (tipc_enable_bearer(args->name, | |
50d3e639 | 150 | ntohl(args->disc_domain), |
b97bf3fd | 151 | ntohl(args->priority))) |
4323add6 | 152 | return tipc_cfg_reply_error_string("unable to enable bearer"); |
b97bf3fd | 153 | |
4323add6 | 154 | return tipc_cfg_reply_none(); |
b97bf3fd PL |
155 | } |
156 | ||
157 | static struct sk_buff *cfg_disable_bearer(void) | |
158 | { | |
159 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_BEARER_NAME)) | |
4323add6 | 160 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
b97bf3fd PL |
161 | |
162 | if (tipc_disable_bearer((char *)TLV_DATA(req_tlv_area))) | |
4323add6 | 163 | return tipc_cfg_reply_error_string("unable to disable bearer"); |
b97bf3fd | 164 | |
4323add6 | 165 | return tipc_cfg_reply_none(); |
b97bf3fd PL |
166 | } |
167 | ||
168 | static struct sk_buff *cfg_set_own_addr(void) | |
169 | { | |
170 | u32 addr; | |
171 | ||
172 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_NET_ADDR)) | |
4323add6 | 173 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
b97bf3fd | 174 | |
3e6c8cd5 | 175 | addr = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
b97bf3fd | 176 | if (addr == tipc_own_addr) |
4323add6 PL |
177 | return tipc_cfg_reply_none(); |
178 | if (!tipc_addr_node_valid(addr)) | |
179 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE | |
180 | " (node address)"); | |
b58343f9 | 181 | if (tipc_own_addr) |
4323add6 PL |
182 | return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
183 | " (cannot change node address once assigned)"); | |
e100ae92 | 184 | |
c4307285 | 185 | /* |
bfec73d7 AS |
186 | * Must temporarily release configuration spinlock while switching into |
187 | * networking mode as it calls tipc_eth_media_start(), which may sleep. | |
188 | * Releasing the lock is harmless as other locally-issued configuration | |
189 | * commands won't occur until this one completes, and remotely-issued | |
190 | * configuration commands can't be received until a local configuration | |
191 | * command to enable the first bearer is received and processed. | |
e100ae92 | 192 | */ |
b97bf3fd | 193 | spin_unlock_bh(&config_lock); |
03194379 | 194 | tipc_core_start_net(addr); |
b97bf3fd | 195 | spin_lock_bh(&config_lock); |
4323add6 | 196 | return tipc_cfg_reply_none(); |
b97bf3fd PL |
197 | } |
198 | ||
199 | static struct sk_buff *cfg_set_remote_mng(void) | |
200 | { | |
201 | u32 value; | |
202 | ||
203 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
4323add6 | 204 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
b97bf3fd | 205 | |
3e6c8cd5 | 206 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
b97bf3fd | 207 | tipc_remote_management = (value != 0); |
4323add6 | 208 | return tipc_cfg_reply_none(); |
b97bf3fd PL |
209 | } |
210 | ||
211 | static struct sk_buff *cfg_set_max_publications(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)); |
732efba4 | 219 | if (value < 1 || value > 65535) |
4323add6 PL |
220 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE |
221 | " (max publications must be 1-65535)"); | |
b97bf3fd | 222 | tipc_max_publications = value; |
4323add6 | 223 | return tipc_cfg_reply_none(); |
b97bf3fd PL |
224 | } |
225 | ||
226 | static struct sk_buff *cfg_set_max_subscriptions(void) | |
227 | { | |
228 | u32 value; | |
229 | ||
230 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
4323add6 | 231 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
b97bf3fd | 232 | |
3e6c8cd5 | 233 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
732efba4 | 234 | if (value < 1 || value > 65535) |
4323add6 PL |
235 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE |
236 | " (max subscriptions must be 1-65535"); | |
b97bf3fd | 237 | tipc_max_subscriptions = value; |
4323add6 | 238 | return tipc_cfg_reply_none(); |
b97bf3fd PL |
239 | } |
240 | ||
241 | static struct sk_buff *cfg_set_max_ports(void) | |
242 | { | |
b97bf3fd PL |
243 | u32 value; |
244 | ||
245 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
4323add6 | 246 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
3e6c8cd5 | 247 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
e100ae92 AS |
248 | if (value == tipc_max_ports) |
249 | return tipc_cfg_reply_none(); | |
732efba4 | 250 | if (value < 127 || value > 65535) |
4323add6 PL |
251 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE |
252 | " (max ports must be 127-65535)"); | |
077a26f0 AS |
253 | return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
254 | " (cannot change max ports while TIPC is active)"); | |
b97bf3fd PL |
255 | } |
256 | ||
b97bf3fd PL |
257 | static struct sk_buff *cfg_set_netid(void) |
258 | { | |
259 | u32 value; | |
260 | ||
261 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) | |
4323add6 | 262 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
3e6c8cd5 | 263 | value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); |
e100ae92 AS |
264 | if (value == tipc_net_id) |
265 | return tipc_cfg_reply_none(); | |
732efba4 | 266 | if (value < 1 || value > 9999) |
4323add6 PL |
267 | return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE |
268 | " (network id must be 1-9999)"); | |
b58343f9 | 269 | if (tipc_own_addr) |
4323add6 | 270 | return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
e100ae92 AS |
271 | " (cannot change network id once TIPC has joined a network)"); |
272 | tipc_net_id = value; | |
273 | return tipc_cfg_reply_none(); | |
b97bf3fd PL |
274 | } |
275 | ||
4323add6 PL |
276 | struct sk_buff *tipc_cfg_do_cmd(u32 orig_node, u16 cmd, const void *request_area, |
277 | int request_space, int reply_headroom) | |
b97bf3fd PL |
278 | { |
279 | struct sk_buff *rep_tlv_buf; | |
280 | ||
281 | spin_lock_bh(&config_lock); | |
282 | ||
283 | /* Save request and reply details in a well-known location */ | |
b97bf3fd PL |
284 | req_tlv_area = request_area; |
285 | req_tlv_space = request_space; | |
286 | rep_headroom = reply_headroom; | |
287 | ||
288 | /* Check command authorization */ | |
9d52ce4b | 289 | if (likely(in_own_node(orig_node))) { |
b97bf3fd PL |
290 | /* command is permitted */ |
291 | } else if (cmd >= 0x8000) { | |
4323add6 PL |
292 | rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
293 | " (cannot be done remotely)"); | |
b97bf3fd PL |
294 | goto exit; |
295 | } else if (!tipc_remote_management) { | |
4323add6 | 296 | rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NO_REMOTE); |
b97bf3fd | 297 | goto exit; |
0e65967e | 298 | } else if (cmd >= 0x4000) { |
b97bf3fd PL |
299 | u32 domain = 0; |
300 | ||
4323add6 | 301 | if ((tipc_nametbl_translate(TIPC_ZM_SRV, 0, &domain) == 0) || |
b97bf3fd | 302 | (domain != orig_node)) { |
4323add6 | 303 | rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_ZONE_MSTR); |
b97bf3fd PL |
304 | goto exit; |
305 | } | |
306 | } | |
307 | ||
308 | /* Call appropriate processing routine */ | |
b97bf3fd PL |
309 | switch (cmd) { |
310 | case TIPC_CMD_NOOP: | |
4323add6 | 311 | rep_tlv_buf = tipc_cfg_reply_none(); |
b97bf3fd PL |
312 | break; |
313 | case TIPC_CMD_GET_NODES: | |
4323add6 | 314 | rep_tlv_buf = tipc_node_get_nodes(req_tlv_area, req_tlv_space); |
b97bf3fd PL |
315 | break; |
316 | case TIPC_CMD_GET_LINKS: | |
4323add6 | 317 | rep_tlv_buf = tipc_node_get_links(req_tlv_area, req_tlv_space); |
b97bf3fd PL |
318 | break; |
319 | case TIPC_CMD_SHOW_LINK_STATS: | |
4323add6 | 320 | rep_tlv_buf = tipc_link_cmd_show_stats(req_tlv_area, req_tlv_space); |
b97bf3fd PL |
321 | break; |
322 | case TIPC_CMD_RESET_LINK_STATS: | |
4323add6 | 323 | rep_tlv_buf = tipc_link_cmd_reset_stats(req_tlv_area, req_tlv_space); |
b97bf3fd PL |
324 | break; |
325 | case TIPC_CMD_SHOW_NAME_TABLE: | |
4323add6 | 326 | rep_tlv_buf = tipc_nametbl_get(req_tlv_area, req_tlv_space); |
b97bf3fd PL |
327 | break; |
328 | case TIPC_CMD_GET_BEARER_NAMES: | |
4323add6 | 329 | rep_tlv_buf = tipc_bearer_get_names(); |
b97bf3fd PL |
330 | break; |
331 | case TIPC_CMD_GET_MEDIA_NAMES: | |
4323add6 | 332 | rep_tlv_buf = tipc_media_get_names(); |
b97bf3fd PL |
333 | break; |
334 | case TIPC_CMD_SHOW_PORTS: | |
4323add6 | 335 | rep_tlv_buf = tipc_port_get_ports(); |
b97bf3fd | 336 | break; |
b97bf3fd | 337 | case TIPC_CMD_SET_LOG_SIZE: |
025adbe8 | 338 | rep_tlv_buf = tipc_log_resize_cmd(req_tlv_area, req_tlv_space); |
b97bf3fd PL |
339 | break; |
340 | case TIPC_CMD_DUMP_LOG: | |
4323add6 | 341 | rep_tlv_buf = tipc_log_dump(); |
b97bf3fd | 342 | break; |
107e7be6 AS |
343 | case TIPC_CMD_SHOW_STATS: |
344 | rep_tlv_buf = tipc_show_stats(); | |
345 | break; | |
b97bf3fd PL |
346 | case TIPC_CMD_SET_LINK_TOL: |
347 | case TIPC_CMD_SET_LINK_PRI: | |
348 | case TIPC_CMD_SET_LINK_WINDOW: | |
4323add6 | 349 | rep_tlv_buf = tipc_link_cmd_config(req_tlv_area, req_tlv_space, cmd); |
b97bf3fd PL |
350 | break; |
351 | case TIPC_CMD_ENABLE_BEARER: | |
352 | rep_tlv_buf = cfg_enable_bearer(); | |
353 | break; | |
354 | case TIPC_CMD_DISABLE_BEARER: | |
355 | rep_tlv_buf = cfg_disable_bearer(); | |
356 | break; | |
357 | case TIPC_CMD_SET_NODE_ADDR: | |
358 | rep_tlv_buf = cfg_set_own_addr(); | |
359 | break; | |
360 | case TIPC_CMD_SET_REMOTE_MNG: | |
361 | rep_tlv_buf = cfg_set_remote_mng(); | |
362 | break; | |
363 | case TIPC_CMD_SET_MAX_PORTS: | |
364 | rep_tlv_buf = cfg_set_max_ports(); | |
365 | break; | |
366 | case TIPC_CMD_SET_MAX_PUBL: | |
367 | rep_tlv_buf = cfg_set_max_publications(); | |
368 | break; | |
369 | case TIPC_CMD_SET_MAX_SUBSCR: | |
370 | rep_tlv_buf = cfg_set_max_subscriptions(); | |
371 | break; | |
b97bf3fd PL |
372 | case TIPC_CMD_SET_NETID: |
373 | rep_tlv_buf = cfg_set_netid(); | |
374 | break; | |
375 | case TIPC_CMD_GET_REMOTE_MNG: | |
4323add6 | 376 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_remote_management); |
b97bf3fd PL |
377 | break; |
378 | case TIPC_CMD_GET_MAX_PORTS: | |
4323add6 | 379 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_ports); |
b97bf3fd PL |
380 | break; |
381 | case TIPC_CMD_GET_MAX_PUBL: | |
4323add6 | 382 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_publications); |
b97bf3fd PL |
383 | break; |
384 | case TIPC_CMD_GET_MAX_SUBSCR: | |
4323add6 | 385 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_subscriptions); |
b97bf3fd | 386 | break; |
b97bf3fd | 387 | case TIPC_CMD_GET_NETID: |
4323add6 | 388 | rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_net_id); |
b97bf3fd | 389 | break; |
59f0c452 AS |
390 | case TIPC_CMD_NOT_NET_ADMIN: |
391 | rep_tlv_buf = | |
392 | tipc_cfg_reply_error_string(TIPC_CFG_NOT_NET_ADMIN); | |
393 | break; | |
51f98a8d AS |
394 | case TIPC_CMD_SET_MAX_ZONES: |
395 | case TIPC_CMD_GET_MAX_ZONES: | |
08c80e9a AS |
396 | case TIPC_CMD_SET_MAX_SLAVES: |
397 | case TIPC_CMD_GET_MAX_SLAVES: | |
8f92df6a AS |
398 | case TIPC_CMD_SET_MAX_CLUSTERS: |
399 | case TIPC_CMD_GET_MAX_CLUSTERS: | |
f831c963 AS |
400 | case TIPC_CMD_SET_MAX_NODES: |
401 | case TIPC_CMD_GET_MAX_NODES: | |
51f98a8d AS |
402 | rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
403 | " (obsolete command)"); | |
404 | break; | |
b97bf3fd | 405 | default: |
53cfd1e1 AS |
406 | rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED |
407 | " (unknown command)"); | |
b97bf3fd PL |
408 | break; |
409 | } | |
410 | ||
411 | /* Return reply buffer */ | |
412 | exit: | |
413 | spin_unlock_bh(&config_lock); | |
414 | return rep_tlv_buf; | |
415 | } | |
416 | ||
417 | static void cfg_named_msg_event(void *userdata, | |
418 | u32 port_ref, | |
419 | struct sk_buff **buf, | |
420 | const unchar *msg, | |
421 | u32 size, | |
c4307285 | 422 | u32 importance, |
b97bf3fd PL |
423 | struct tipc_portid const *orig, |
424 | struct tipc_name_seq const *dest) | |
425 | { | |
426 | struct tipc_cfg_msg_hdr *req_hdr; | |
427 | struct tipc_cfg_msg_hdr *rep_hdr; | |
428 | struct sk_buff *rep_buf; | |
429 | ||
430 | /* Validate configuration message header (ignore invalid message) */ | |
b97bf3fd PL |
431 | req_hdr = (struct tipc_cfg_msg_hdr *)msg; |
432 | if ((size < sizeof(*req_hdr)) || | |
433 | (size != TCM_ALIGN(ntohl(req_hdr->tcm_len))) || | |
434 | (ntohs(req_hdr->tcm_flags) != TCM_F_REQUEST)) { | |
2cf8aa19 | 435 | pr_warn("Invalid configuration message discarded\n"); |
b97bf3fd PL |
436 | return; |
437 | } | |
438 | ||
439 | /* Generate reply for request (if can't, return request) */ | |
4323add6 | 440 | rep_buf = tipc_cfg_do_cmd(orig->node, |
c4307285 | 441 | ntohs(req_hdr->tcm_type), |
4323add6 PL |
442 | msg + sizeof(*req_hdr), |
443 | size - sizeof(*req_hdr), | |
444 | BUF_HEADROOM + MAX_H_SIZE + sizeof(*rep_hdr)); | |
b97bf3fd PL |
445 | if (rep_buf) { |
446 | skb_push(rep_buf, sizeof(*rep_hdr)); | |
447 | rep_hdr = (struct tipc_cfg_msg_hdr *)rep_buf->data; | |
448 | memcpy(rep_hdr, req_hdr, sizeof(*rep_hdr)); | |
449 | rep_hdr->tcm_len = htonl(rep_buf->len); | |
450 | rep_hdr->tcm_flags &= htons(~TCM_F_REQUEST); | |
451 | } else { | |
452 | rep_buf = *buf; | |
453 | *buf = NULL; | |
454 | } | |
455 | ||
456 | /* NEED TO ADD CODE TO HANDLE FAILED SEND (SUCH AS CONGESTION) */ | |
457 | tipc_send_buf2port(port_ref, orig, rep_buf, rep_buf->len); | |
458 | } | |
459 | ||
4323add6 | 460 | int tipc_cfg_init(void) |
b97bf3fd PL |
461 | { |
462 | struct tipc_name_seq seq; | |
463 | int res; | |
464 | ||
b0c1e928 | 465 | res = tipc_createport(NULL, TIPC_CRITICAL_IMPORTANCE, |
b97bf3fd PL |
466 | NULL, NULL, NULL, |
467 | NULL, cfg_named_msg_event, NULL, | |
7a488fd3 | 468 | NULL, &config_port_ref); |
b97bf3fd PL |
469 | if (res) |
470 | goto failed; | |
471 | ||
472 | seq.type = TIPC_CFG_SRV; | |
473 | seq.lower = seq.upper = tipc_own_addr; | |
c422f1bd | 474 | res = tipc_publish(config_port_ref, TIPC_ZONE_SCOPE, &seq); |
b97bf3fd PL |
475 | if (res) |
476 | goto failed; | |
477 | ||
478 | return 0; | |
479 | ||
480 | failed: | |
2cf8aa19 | 481 | pr_err("Unable to create configuration service\n"); |
b97bf3fd PL |
482 | return res; |
483 | } | |
484 | ||
a2cfd45b AS |
485 | void tipc_cfg_reinit(void) |
486 | { | |
487 | struct tipc_name_seq seq; | |
488 | int res; | |
489 | ||
490 | seq.type = TIPC_CFG_SRV; | |
491 | seq.lower = seq.upper = 0; | |
492 | tipc_withdraw(config_port_ref, TIPC_ZONE_SCOPE, &seq); | |
493 | ||
494 | seq.lower = seq.upper = tipc_own_addr; | |
495 | res = tipc_publish(config_port_ref, TIPC_ZONE_SCOPE, &seq); | |
496 | if (res) | |
2cf8aa19 | 497 | pr_err("Unable to reinitialize configuration service\n"); |
a2cfd45b AS |
498 | } |
499 | ||
4323add6 | 500 | void tipc_cfg_stop(void) |
b97bf3fd | 501 | { |
eb323b07 AS |
502 | tipc_deleteport(config_port_ref); |
503 | config_port_ref = 0; | |
b97bf3fd | 504 | } |