blob: 7978fdd992999c2b41865b3086b276e697201045 [file] [log] [blame]
Per Lidenb97bf3f2006-01-02 19:04:38 +01001/*
2 * net/tipc/config.c: TIPC configuration management code
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09003 *
Per Liden593a5f22006-01-11 19:14:19 +01004 * Copyright (c) 2002-2006, Ericsson AB
Allan Stephensf831c962011-02-25 14:22:11 -05005 * Copyright (c) 2004-2007, 2010-2011, Wind River Systems
Per Lidenb97bf3f2006-01-02 19:04:38 +01006 * All rights reserved.
7 *
Per Liden9ea1fd32006-01-11 13:30:43 +01008 * Redistribution and use in source and binary forms, with or without
Per Lidenb97bf3f2006-01-02 19:04:38 +01009 * modification, are permitted provided that the following conditions are met:
10 *
Per Liden9ea1fd32006-01-11 13:30:43 +010011 * 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.
Per Lidenb97bf3f2006-01-02 19:04:38 +010019 *
Per Liden9ea1fd32006-01-11 13:30:43 +010020 * 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
Per Lidenb97bf3f2006-01-02 19:04:38 +010034 * POSSIBILITY OF SUCH DAMAGE.
35 */
36
37#include "core.h"
Per Lidenb97bf3f2006-01-02 19:04:38 +010038#include "port.h"
Per Lidenb97bf3f2006-01-02 19:04:38 +010039#include "name_table.h"
Per Lidenb97bf3f2006-01-02 19:04:38 +010040#include "config.h"
Per Lidenb97bf3f2006-01-02 19:04:38 +010041
Allan Stephens7a488fd32010-12-31 18:59:20 +000042static u32 config_port_ref;
Per Lidenb97bf3f2006-01-02 19:04:38 +010043
Ingo Molnar34af9462006-06-27 02:53:55 -070044static DEFINE_SPINLOCK(config_lock);
Per Lidenb97bf3f2006-01-02 19:04:38 +010045
46static const void *req_tlv_area; /* request message TLV area */
47static int req_tlv_space; /* request message TLV area size */
48static int rep_headroom; /* reply message headroom to use */
49
50
Per Liden4323add2006-01-18 00:38:21 +010051struct sk_buff *tipc_cfg_reply_alloc(int payload_size)
Per Lidenb97bf3f2006-01-02 19:04:38 +010052{
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
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +090061int tipc_cfg_append_tlv(struct sk_buff *buf, int tlv_type,
Per Liden4323add2006-01-18 00:38:21 +010062 void *tlv_data, int tlv_data_size)
Per Lidenb97bf3f2006-01-02 19:04:38 +010063{
Arnaldo Carvalho de Melo27a884d2007-04-19 20:29:13 -070064 struct tlv_desc *tlv = (struct tlv_desc *)skb_tail_pointer(buf);
Per Lidenb97bf3f2006-01-02 19:04:38 +010065 int new_tlv_space = TLV_SPACE(tlv_data_size);
66
Allan Stephensb29f1422010-12-31 18:59:25 +000067 if (skb_tailroom(buf) < new_tlv_space)
Per Lidenb97bf3f2006-01-02 19:04:38 +010068 return 0;
Per Lidenb97bf3f2006-01-02 19:04:38 +010069 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
stephen hemminger31e3c3f2010-10-13 13:20:35 +000077static struct sk_buff *tipc_cfg_reply_unsigned_type(u16 tlv_type, u32 value)
Per Lidenb97bf3f2006-01-02 19:04:38 +010078{
79 struct sk_buff *buf;
Al Viro3e6c8cd2006-11-08 00:19:09 -080080 __be32 value_net;
Per Lidenb97bf3f2006-01-02 19:04:38 +010081
Per Liden4323add2006-01-18 00:38:21 +010082 buf = tipc_cfg_reply_alloc(TLV_SPACE(sizeof(value)));
Per Lidenb97bf3f2006-01-02 19:04:38 +010083 if (buf) {
84 value_net = htonl(value);
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +090085 tipc_cfg_append_tlv(buf, tlv_type, &value_net,
Per Liden4323add2006-01-18 00:38:21 +010086 sizeof(value_net));
Per Lidenb97bf3f2006-01-02 19:04:38 +010087 }
88 return buf;
89}
90
stephen hemminger31e3c3f2010-10-13 13:20:35 +000091static struct sk_buff *tipc_cfg_reply_unsigned(u32 value)
92{
93 return tipc_cfg_reply_unsigned_type(TIPC_TLV_UNSIGNED, value);
94}
95
Per Liden4323add2006-01-18 00:38:21 +010096struct sk_buff *tipc_cfg_reply_string_type(u16 tlv_type, char *string)
Per Lidenb97bf3f2006-01-02 19:04:38 +010097{
98 struct sk_buff *buf;
99 int string_len = strlen(string) + 1;
100
Per Liden4323add2006-01-18 00:38:21 +0100101 buf = tipc_cfg_reply_alloc(TLV_SPACE(string_len));
Per Lidenb97bf3f2006-01-02 19:04:38 +0100102 if (buf)
Per Liden4323add2006-01-18 00:38:21 +0100103 tipc_cfg_append_tlv(buf, tlv_type, string, string_len);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100104 return buf;
105}
106
Allan Stephens107e7be2010-05-11 14:30:08 +0000107#define MAX_STATS_INFO 2000
108
109static 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 ... */
Allan Stephens107e7be2010-05-11 14:30:08 +0000134 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
Per Lidenb97bf3f2006-01-02 19:04:38 +0100141static 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))
Per Liden4323add2006-01-18 00:38:21 +0100146 return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100147
148 args = (struct tipc_bearer_config *)TLV_DATA(req_tlv_area);
149 if (tipc_enable_bearer(args->name,
Allan Stephens50d3e632011-02-28 14:56:15 -0500150 ntohl(args->disc_domain),
Per Lidenb97bf3f2006-01-02 19:04:38 +0100151 ntohl(args->priority)))
Per Liden4323add2006-01-18 00:38:21 +0100152 return tipc_cfg_reply_error_string("unable to enable bearer");
Per Lidenb97bf3f2006-01-02 19:04:38 +0100153
Per Liden4323add2006-01-18 00:38:21 +0100154 return tipc_cfg_reply_none();
Per Lidenb97bf3f2006-01-02 19:04:38 +0100155}
156
157static struct sk_buff *cfg_disable_bearer(void)
158{
159 if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_BEARER_NAME))
Per Liden4323add2006-01-18 00:38:21 +0100160 return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100161
162 if (tipc_disable_bearer((char *)TLV_DATA(req_tlv_area)))
Per Liden4323add2006-01-18 00:38:21 +0100163 return tipc_cfg_reply_error_string("unable to disable bearer");
Per Lidenb97bf3f2006-01-02 19:04:38 +0100164
Per Liden4323add2006-01-18 00:38:21 +0100165 return tipc_cfg_reply_none();
Per Lidenb97bf3f2006-01-02 19:04:38 +0100166}
167
168static 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))
Per Liden4323add2006-01-18 00:38:21 +0100173 return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100174
Al Viro3e6c8cd2006-11-08 00:19:09 -0800175 addr = ntohl(*(__be32 *)TLV_DATA(req_tlv_area));
Per Lidenb97bf3f2006-01-02 19:04:38 +0100176 if (addr == tipc_own_addr)
Per Liden4323add2006-01-18 00:38:21 +0100177 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)");
Allan Stephensb58343f2011-11-08 13:48:28 -0500181 if (tipc_own_addr)
Per Liden4323add2006-01-18 00:38:21 +0100182 return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
183 " (cannot change node address once assigned)");
Allan Stephense100ae92006-06-25 23:51:08 -0700184
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900185 /*
Allan Stephensbfec73d2011-10-18 14:47:02 -0400186 * 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.
Allan Stephense100ae92006-06-25 23:51:08 -0700192 */
Per Lidenb97bf3f2006-01-02 19:04:38 +0100193 spin_unlock_bh(&config_lock);
Allan Stephens03194372008-05-21 14:55:04 -0700194 tipc_core_start_net(addr);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100195 spin_lock_bh(&config_lock);
Per Liden4323add2006-01-18 00:38:21 +0100196 return tipc_cfg_reply_none();
Per Lidenb97bf3f2006-01-02 19:04:38 +0100197}
198
199static 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))
Per Liden4323add2006-01-18 00:38:21 +0100204 return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100205
Al Viro3e6c8cd2006-11-08 00:19:09 -0800206 value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area));
Per Lidenb97bf3f2006-01-02 19:04:38 +0100207 tipc_remote_management = (value != 0);
Per Liden4323add2006-01-18 00:38:21 +0100208 return tipc_cfg_reply_none();
Per Lidenb97bf3f2006-01-02 19:04:38 +0100209}
210
211static 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))
Per Liden4323add2006-01-18 00:38:21 +0100216 return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100217
Al Viro3e6c8cd2006-11-08 00:19:09 -0800218 value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area));
Paul Gortmaker732efba2012-02-23 15:44:08 -0500219 if (value < 1 || value > 65535)
Per Liden4323add2006-01-18 00:38:21 +0100220 return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE
221 " (max publications must be 1-65535)");
Per Lidenb97bf3f2006-01-02 19:04:38 +0100222 tipc_max_publications = value;
Per Liden4323add2006-01-18 00:38:21 +0100223 return tipc_cfg_reply_none();
Per Lidenb97bf3f2006-01-02 19:04:38 +0100224}
225
226static 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))
Per Liden4323add2006-01-18 00:38:21 +0100231 return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100232
Al Viro3e6c8cd2006-11-08 00:19:09 -0800233 value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area));
Paul Gortmaker732efba2012-02-23 15:44:08 -0500234 if (value < 1 || value > 65535)
Per Liden4323add2006-01-18 00:38:21 +0100235 return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE
236 " (max subscriptions must be 1-65535");
Per Lidenb97bf3f2006-01-02 19:04:38 +0100237 tipc_max_subscriptions = value;
Per Liden4323add2006-01-18 00:38:21 +0100238 return tipc_cfg_reply_none();
Per Lidenb97bf3f2006-01-02 19:04:38 +0100239}
240
241static struct sk_buff *cfg_set_max_ports(void)
242{
Per Lidenb97bf3f2006-01-02 19:04:38 +0100243 u32 value;
244
245 if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED))
Per Liden4323add2006-01-18 00:38:21 +0100246 return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
Al Viro3e6c8cd2006-11-08 00:19:09 -0800247 value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area));
Allan Stephense100ae92006-06-25 23:51:08 -0700248 if (value == tipc_max_ports)
249 return tipc_cfg_reply_none();
Paul Gortmaker732efba2012-02-23 15:44:08 -0500250 if (value < 127 || value > 65535)
Per Liden4323add2006-01-18 00:38:21 +0100251 return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE
252 " (max ports must be 127-65535)");
Allan Stephens077a26f2011-11-08 13:18:59 -0500253 return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
254 " (cannot change max ports while TIPC is active)");
Per Lidenb97bf3f2006-01-02 19:04:38 +0100255}
256
Per Lidenb97bf3f2006-01-02 19:04:38 +0100257static 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))
Per Liden4323add2006-01-18 00:38:21 +0100262 return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
Al Viro3e6c8cd2006-11-08 00:19:09 -0800263 value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area));
Allan Stephense100ae92006-06-25 23:51:08 -0700264 if (value == tipc_net_id)
265 return tipc_cfg_reply_none();
Paul Gortmaker732efba2012-02-23 15:44:08 -0500266 if (value < 1 || value > 9999)
Per Liden4323add2006-01-18 00:38:21 +0100267 return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE
268 " (network id must be 1-9999)");
Allan Stephensb58343f2011-11-08 13:48:28 -0500269 if (tipc_own_addr)
Per Liden4323add2006-01-18 00:38:21 +0100270 return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
Allan Stephense100ae92006-06-25 23:51:08 -0700271 " (cannot change network id once TIPC has joined a network)");
272 tipc_net_id = value;
273 return tipc_cfg_reply_none();
Per Lidenb97bf3f2006-01-02 19:04:38 +0100274}
275
Per Liden4323add2006-01-18 00:38:21 +0100276struct sk_buff *tipc_cfg_do_cmd(u32 orig_node, u16 cmd, const void *request_area,
277 int request_space, int reply_headroom)
Per Lidenb97bf3f2006-01-02 19:04:38 +0100278{
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 */
Per Lidenb97bf3f2006-01-02 19:04:38 +0100284 req_tlv_area = request_area;
285 req_tlv_space = request_space;
286 rep_headroom = reply_headroom;
287
288 /* Check command authorization */
Allan Stephens9d52ce42012-04-18 09:42:56 -0400289 if (likely(in_own_node(orig_node))) {
Per Lidenb97bf3f2006-01-02 19:04:38 +0100290 /* command is permitted */
291 } else if (cmd >= 0x8000) {
Per Liden4323add2006-01-18 00:38:21 +0100292 rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
293 " (cannot be done remotely)");
Per Lidenb97bf3f2006-01-02 19:04:38 +0100294 goto exit;
295 } else if (!tipc_remote_management) {
Per Liden4323add2006-01-18 00:38:21 +0100296 rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NO_REMOTE);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100297 goto exit;
Allan Stephens0e659672010-12-31 18:59:32 +0000298 } else if (cmd >= 0x4000) {
Per Lidenb97bf3f2006-01-02 19:04:38 +0100299 u32 domain = 0;
300
Per Liden4323add2006-01-18 00:38:21 +0100301 if ((tipc_nametbl_translate(TIPC_ZM_SRV, 0, &domain) == 0) ||
Per Lidenb97bf3f2006-01-02 19:04:38 +0100302 (domain != orig_node)) {
Per Liden4323add2006-01-18 00:38:21 +0100303 rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_ZONE_MSTR);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100304 goto exit;
305 }
306 }
307
308 /* Call appropriate processing routine */
Per Lidenb97bf3f2006-01-02 19:04:38 +0100309 switch (cmd) {
310 case TIPC_CMD_NOOP:
Per Liden4323add2006-01-18 00:38:21 +0100311 rep_tlv_buf = tipc_cfg_reply_none();
Per Lidenb97bf3f2006-01-02 19:04:38 +0100312 break;
313 case TIPC_CMD_GET_NODES:
Per Liden4323add2006-01-18 00:38:21 +0100314 rep_tlv_buf = tipc_node_get_nodes(req_tlv_area, req_tlv_space);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100315 break;
316 case TIPC_CMD_GET_LINKS:
Per Liden4323add2006-01-18 00:38:21 +0100317 rep_tlv_buf = tipc_node_get_links(req_tlv_area, req_tlv_space);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100318 break;
319 case TIPC_CMD_SHOW_LINK_STATS:
Per Liden4323add2006-01-18 00:38:21 +0100320 rep_tlv_buf = tipc_link_cmd_show_stats(req_tlv_area, req_tlv_space);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100321 break;
322 case TIPC_CMD_RESET_LINK_STATS:
Per Liden4323add2006-01-18 00:38:21 +0100323 rep_tlv_buf = tipc_link_cmd_reset_stats(req_tlv_area, req_tlv_space);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100324 break;
325 case TIPC_CMD_SHOW_NAME_TABLE:
Per Liden4323add2006-01-18 00:38:21 +0100326 rep_tlv_buf = tipc_nametbl_get(req_tlv_area, req_tlv_space);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100327 break;
328 case TIPC_CMD_GET_BEARER_NAMES:
Per Liden4323add2006-01-18 00:38:21 +0100329 rep_tlv_buf = tipc_bearer_get_names();
Per Lidenb97bf3f2006-01-02 19:04:38 +0100330 break;
331 case TIPC_CMD_GET_MEDIA_NAMES:
Per Liden4323add2006-01-18 00:38:21 +0100332 rep_tlv_buf = tipc_media_get_names();
Per Lidenb97bf3f2006-01-02 19:04:38 +0100333 break;
334 case TIPC_CMD_SHOW_PORTS:
Per Liden4323add2006-01-18 00:38:21 +0100335 rep_tlv_buf = tipc_port_get_ports();
Per Lidenb97bf3f2006-01-02 19:04:38 +0100336 break;
Per Lidenb97bf3f2006-01-02 19:04:38 +0100337 case TIPC_CMD_SET_LOG_SIZE:
Allan Stephens025adbe2008-05-05 01:20:04 -0700338 rep_tlv_buf = tipc_log_resize_cmd(req_tlv_area, req_tlv_space);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100339 break;
340 case TIPC_CMD_DUMP_LOG:
Per Liden4323add2006-01-18 00:38:21 +0100341 rep_tlv_buf = tipc_log_dump();
Per Lidenb97bf3f2006-01-02 19:04:38 +0100342 break;
Allan Stephens107e7be2010-05-11 14:30:08 +0000343 case TIPC_CMD_SHOW_STATS:
344 rep_tlv_buf = tipc_show_stats();
345 break;
Per Lidenb97bf3f2006-01-02 19:04:38 +0100346 case TIPC_CMD_SET_LINK_TOL:
347 case TIPC_CMD_SET_LINK_PRI:
348 case TIPC_CMD_SET_LINK_WINDOW:
Per Liden4323add2006-01-18 00:38:21 +0100349 rep_tlv_buf = tipc_link_cmd_config(req_tlv_area, req_tlv_space, cmd);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100350 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;
Per Lidenb97bf3f2006-01-02 19:04:38 +0100372 case TIPC_CMD_SET_NETID:
373 rep_tlv_buf = cfg_set_netid();
374 break;
375 case TIPC_CMD_GET_REMOTE_MNG:
Per Liden4323add2006-01-18 00:38:21 +0100376 rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_remote_management);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100377 break;
378 case TIPC_CMD_GET_MAX_PORTS:
Per Liden4323add2006-01-18 00:38:21 +0100379 rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_ports);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100380 break;
381 case TIPC_CMD_GET_MAX_PUBL:
Per Liden4323add2006-01-18 00:38:21 +0100382 rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_publications);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100383 break;
384 case TIPC_CMD_GET_MAX_SUBSCR:
Per Liden4323add2006-01-18 00:38:21 +0100385 rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_subscriptions);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100386 break;
Per Lidenb97bf3f2006-01-02 19:04:38 +0100387 case TIPC_CMD_GET_NETID:
Per Liden4323add2006-01-18 00:38:21 +0100388 rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_net_id);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100389 break;
Allan Stephens59f0c452008-05-21 14:52:30 -0700390 case TIPC_CMD_NOT_NET_ADMIN:
391 rep_tlv_buf =
392 tipc_cfg_reply_error_string(TIPC_CFG_NOT_NET_ADMIN);
393 break;
Allan Stephens51f98a82010-12-31 18:59:16 +0000394 case TIPC_CMD_SET_MAX_ZONES:
395 case TIPC_CMD_GET_MAX_ZONES:
Allan Stephens08c80e92010-12-31 18:59:17 +0000396 case TIPC_CMD_SET_MAX_SLAVES:
397 case TIPC_CMD_GET_MAX_SLAVES:
Allan Stephens8f92df62010-12-31 18:59:19 +0000398 case TIPC_CMD_SET_MAX_CLUSTERS:
399 case TIPC_CMD_GET_MAX_CLUSTERS:
Allan Stephensf831c962011-02-25 14:22:11 -0500400 case TIPC_CMD_SET_MAX_NODES:
401 case TIPC_CMD_GET_MAX_NODES:
Allan Stephens51f98a82010-12-31 18:59:16 +0000402 rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
403 " (obsolete command)");
404 break;
Per Lidenb97bf3f2006-01-02 19:04:38 +0100405 default:
Allan Stephens53cfd1e2006-10-16 22:00:56 -0700406 rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
407 " (unknown command)");
Per Lidenb97bf3f2006-01-02 19:04:38 +0100408 break;
409 }
410
411 /* Return reply buffer */
412exit:
413 spin_unlock_bh(&config_lock);
414 return rep_tlv_buf;
415}
416
417static void cfg_named_msg_event(void *userdata,
418 u32 port_ref,
419 struct sk_buff **buf,
420 const unchar *msg,
421 u32 size,
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900422 u32 importance,
Per Lidenb97bf3f2006-01-02 19:04:38 +0100423 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) */
Per Lidenb97bf3f2006-01-02 19:04:38 +0100431 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)) {
Erik Hugne2cf8aa12012-06-29 00:16:37 -0400435 pr_warn("Invalid configuration message discarded\n");
Per Lidenb97bf3f2006-01-02 19:04:38 +0100436 return;
437 }
438
439 /* Generate reply for request (if can't, return request) */
Per Liden4323add2006-01-18 00:38:21 +0100440 rep_buf = tipc_cfg_do_cmd(orig->node,
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900441 ntohs(req_hdr->tcm_type),
Per Liden4323add2006-01-18 00:38:21 +0100442 msg + sizeof(*req_hdr),
443 size - sizeof(*req_hdr),
444 BUF_HEADROOM + MAX_H_SIZE + sizeof(*rep_hdr));
Per Lidenb97bf3f2006-01-02 19:04:38 +0100445 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
Per Liden4323add2006-01-18 00:38:21 +0100460int tipc_cfg_init(void)
Per Lidenb97bf3f2006-01-02 19:04:38 +0100461{
462 struct tipc_name_seq seq;
463 int res;
464
Allan Stephensb0c1e922010-12-31 18:59:22 +0000465 res = tipc_createport(NULL, TIPC_CRITICAL_IMPORTANCE,
Per Lidenb97bf3f2006-01-02 19:04:38 +0100466 NULL, NULL, NULL,
467 NULL, cfg_named_msg_event, NULL,
Allan Stephens7a488fd32010-12-31 18:59:20 +0000468 NULL, &config_port_ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100469 if (res)
470 goto failed;
471
472 seq.type = TIPC_CFG_SRV;
473 seq.lower = seq.upper = tipc_own_addr;
Allan Stephensc422f1b2011-11-02 15:49:40 -0400474 res = tipc_publish(config_port_ref, TIPC_ZONE_SCOPE, &seq);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100475 if (res)
476 goto failed;
477
478 return 0;
479
480failed:
Erik Hugne2cf8aa12012-06-29 00:16:37 -0400481 pr_err("Unable to create configuration service\n");
Per Lidenb97bf3f2006-01-02 19:04:38 +0100482 return res;
483}
484
Allan Stephensa2cfd452012-04-26 16:46:29 -0400485void 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)
Erik Hugne2cf8aa12012-06-29 00:16:37 -0400497 pr_err("Unable to reinitialize configuration service\n");
Allan Stephensa2cfd452012-04-26 16:46:29 -0400498}
499
Per Liden4323add2006-01-18 00:38:21 +0100500void tipc_cfg_stop(void)
Per Lidenb97bf3f2006-01-02 19:04:38 +0100501{
Allan Stephenseb323b02012-04-26 17:17:39 -0400502 tipc_deleteport(config_port_ref);
503 config_port_ref = 0;
Per Lidenb97bf3f2006-01-02 19:04:38 +0100504}