Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1 | /* |
| 2 | * net/tipc/bearer.c: TIPC bearer code |
| 3 | * |
Per Liden | 593a5f2 | 2006-01-11 19:14:19 +0100 | [diff] [blame] | 4 | * Copyright (c) 1996-2006, Ericsson AB |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 5 | * Copyright (c) 2004-2005, Wind River Systems |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 6 | * All rights reserved. |
| 7 | * |
Per Liden | 9ea1fd3 | 2006-01-11 13:30:43 +0100 | [diff] [blame] | 8 | * Redistribution and use in source and binary forms, with or without |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 9 | * modification, are permitted provided that the following conditions are met: |
| 10 | * |
Per Liden | 9ea1fd3 | 2006-01-11 13:30:43 +0100 | [diff] [blame] | 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. |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 19 | * |
Per Liden | 9ea1fd3 | 2006-01-11 13:30:43 +0100 | [diff] [blame] | 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 |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 34 | * POSSIBILITY OF SUCH DAMAGE. |
| 35 | */ |
| 36 | |
| 37 | #include "core.h" |
| 38 | #include "config.h" |
| 39 | #include "dbg.h" |
| 40 | #include "bearer.h" |
| 41 | #include "link.h" |
| 42 | #include "port.h" |
| 43 | #include "discover.h" |
| 44 | #include "bcast.h" |
| 45 | |
| 46 | #define MAX_ADDR_STR 32 |
| 47 | |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 48 | static struct media *media_list = NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 49 | static u32 media_count = 0; |
| 50 | |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 51 | struct bearer *tipc_bearers = NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 52 | |
| 53 | /** |
| 54 | * media_name_valid - validate media name |
| 55 | * |
| 56 | * Returns 1 if media name is valid, otherwise 0. |
| 57 | */ |
| 58 | |
| 59 | static int media_name_valid(const char *name) |
| 60 | { |
| 61 | u32 len; |
| 62 | |
| 63 | len = strlen(name); |
| 64 | if ((len + 1) > TIPC_MAX_MEDIA_NAME) |
| 65 | return 0; |
| 66 | return (strspn(name, tipc_alphabet) == len); |
| 67 | } |
| 68 | |
| 69 | /** |
| 70 | * media_find - locates specified media object by name |
| 71 | */ |
| 72 | |
| 73 | static struct media *media_find(const char *name) |
| 74 | { |
| 75 | struct media *m_ptr; |
| 76 | u32 i; |
| 77 | |
| 78 | for (i = 0, m_ptr = media_list; i < media_count; i++, m_ptr++) { |
| 79 | if (!strcmp(m_ptr->name, name)) |
| 80 | return m_ptr; |
| 81 | } |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 82 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 83 | } |
| 84 | |
| 85 | /** |
| 86 | * tipc_register_media - register a media type |
| 87 | * |
| 88 | * Bearers for this media type must be activated separately at a later stage. |
| 89 | */ |
| 90 | |
| 91 | int tipc_register_media(u32 media_type, |
| 92 | char *name, |
| 93 | int (*enable)(struct tipc_bearer *), |
| 94 | void (*disable)(struct tipc_bearer *), |
| 95 | int (*send_msg)(struct sk_buff *, |
| 96 | struct tipc_bearer *, |
| 97 | struct tipc_media_addr *), |
| 98 | char *(*addr2str)(struct tipc_media_addr *a, |
| 99 | char *str_buf, int str_size), |
| 100 | struct tipc_media_addr *bcast_addr, |
| 101 | const u32 bearer_priority, |
| 102 | const u32 link_tolerance, /* [ms] */ |
| 103 | const u32 send_window_limit) |
| 104 | { |
| 105 | struct media *m_ptr; |
| 106 | u32 media_id; |
| 107 | u32 i; |
| 108 | int res = -EINVAL; |
| 109 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 110 | write_lock_bh(&tipc_net_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 111 | if (!media_list) |
| 112 | goto exit; |
| 113 | |
| 114 | if (!media_name_valid(name)) { |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 115 | warn("Media <%s> rejected, illegal name\n", name); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 116 | goto exit; |
| 117 | } |
| 118 | if (!bcast_addr) { |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 119 | warn("Media <%s> rejected, no broadcast address\n", name); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 120 | goto exit; |
| 121 | } |
Per Liden | 16cb4b3 | 2006-01-13 22:22:22 +0100 | [diff] [blame] | 122 | if ((bearer_priority < TIPC_MIN_LINK_PRI) && |
| 123 | (bearer_priority > TIPC_MAX_LINK_PRI)) { |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 124 | warn("Media <%s> rejected, illegal priority (%u)\n", name, |
| 125 | bearer_priority); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 126 | goto exit; |
| 127 | } |
| 128 | if ((link_tolerance < TIPC_MIN_LINK_TOL) || |
| 129 | (link_tolerance > TIPC_MAX_LINK_TOL)) { |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 130 | warn("Media <%s> rejected, illegal tolerance (%u)\n", name, |
| 131 | link_tolerance); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 132 | goto exit; |
| 133 | } |
| 134 | |
| 135 | media_id = media_count++; |
| 136 | if (media_id >= MAX_MEDIA) { |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 137 | warn("Media <%s> rejected, media limit reached (%u)\n", name, |
| 138 | MAX_MEDIA); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 139 | media_count--; |
| 140 | goto exit; |
| 141 | } |
| 142 | for (i = 0; i < media_id; i++) { |
| 143 | if (media_list[i].type_id == media_type) { |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 144 | warn("Media <%s> rejected, duplicate type (%u)\n", name, |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 145 | media_type); |
| 146 | media_count--; |
| 147 | goto exit; |
| 148 | } |
| 149 | if (!strcmp(name, media_list[i].name)) { |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 150 | warn("Media <%s> rejected, duplicate name\n", name); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 151 | media_count--; |
| 152 | goto exit; |
| 153 | } |
| 154 | } |
| 155 | |
| 156 | m_ptr = &media_list[media_id]; |
| 157 | m_ptr->type_id = media_type; |
| 158 | m_ptr->send_msg = send_msg; |
| 159 | m_ptr->enable_bearer = enable; |
| 160 | m_ptr->disable_bearer = disable; |
| 161 | m_ptr->addr2str = addr2str; |
| 162 | memcpy(&m_ptr->bcast_addr, bcast_addr, sizeof(*bcast_addr)); |
| 163 | m_ptr->bcast = 1; |
| 164 | strcpy(m_ptr->name, name); |
| 165 | m_ptr->priority = bearer_priority; |
| 166 | m_ptr->tolerance = link_tolerance; |
| 167 | m_ptr->window = send_window_limit; |
| 168 | dbg("Media <%s> registered\n", name); |
| 169 | res = 0; |
| 170 | exit: |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 171 | write_unlock_bh(&tipc_net_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 172 | return res; |
| 173 | } |
| 174 | |
| 175 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 176 | * tipc_media_addr_printf - record media address in print buffer |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 177 | */ |
| 178 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 179 | void tipc_media_addr_printf(struct print_buf *pb, struct tipc_media_addr *a) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 180 | { |
| 181 | struct media *m_ptr; |
| 182 | u32 media_type; |
| 183 | u32 i; |
| 184 | |
| 185 | media_type = ntohl(a->type); |
| 186 | for (i = 0, m_ptr = media_list; i < media_count; i++, m_ptr++) { |
| 187 | if (m_ptr->type_id == media_type) |
| 188 | break; |
| 189 | } |
| 190 | |
| 191 | if ((i < media_count) && (m_ptr->addr2str != NULL)) { |
| 192 | char addr_str[MAX_ADDR_STR]; |
| 193 | |
| 194 | tipc_printf(pb, "%s(%s) ", m_ptr->name, |
| 195 | m_ptr->addr2str(a, addr_str, sizeof(addr_str))); |
| 196 | } else { |
| 197 | unchar *addr = (unchar *)&a->dev_addr; |
| 198 | |
| 199 | tipc_printf(pb, "UNKNOWN(%u):", media_type); |
| 200 | for (i = 0; i < (sizeof(*a) - sizeof(a->type)); i++) { |
| 201 | tipc_printf(pb, "%02x ", addr[i]); |
| 202 | } |
| 203 | } |
| 204 | } |
| 205 | |
| 206 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 207 | * tipc_media_get_names - record names of registered media in buffer |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 208 | */ |
| 209 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 210 | struct sk_buff *tipc_media_get_names(void) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 211 | { |
| 212 | struct sk_buff *buf; |
| 213 | struct media *m_ptr; |
| 214 | int i; |
| 215 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 216 | buf = tipc_cfg_reply_alloc(MAX_MEDIA * TLV_SPACE(TIPC_MAX_MEDIA_NAME)); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 217 | if (!buf) |
| 218 | return NULL; |
| 219 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 220 | read_lock_bh(&tipc_net_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 221 | for (i = 0, m_ptr = media_list; i < media_count; i++, m_ptr++) { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 222 | tipc_cfg_append_tlv(buf, TIPC_TLV_MEDIA_NAME, m_ptr->name, |
| 223 | strlen(m_ptr->name) + 1); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 224 | } |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 225 | read_unlock_bh(&tipc_net_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 226 | return buf; |
| 227 | } |
| 228 | |
| 229 | /** |
| 230 | * bearer_name_validate - validate & (optionally) deconstruct bearer name |
| 231 | * @name - ptr to bearer name string |
| 232 | * @name_parts - ptr to area for bearer name components (or NULL if not needed) |
| 233 | * |
| 234 | * Returns 1 if bearer name is valid, otherwise 0. |
| 235 | */ |
| 236 | |
| 237 | static int bearer_name_validate(const char *name, |
| 238 | struct bearer_name *name_parts) |
| 239 | { |
| 240 | char name_copy[TIPC_MAX_BEARER_NAME]; |
| 241 | char *media_name; |
| 242 | char *if_name; |
| 243 | u32 media_len; |
| 244 | u32 if_len; |
| 245 | |
| 246 | /* copy bearer name & ensure length is OK */ |
| 247 | |
| 248 | name_copy[TIPC_MAX_BEARER_NAME - 1] = 0; |
| 249 | /* need above in case non-Posix strncpy() doesn't pad with nulls */ |
| 250 | strncpy(name_copy, name, TIPC_MAX_BEARER_NAME); |
| 251 | if (name_copy[TIPC_MAX_BEARER_NAME - 1] != 0) |
| 252 | return 0; |
| 253 | |
| 254 | /* ensure all component parts of bearer name are present */ |
| 255 | |
| 256 | media_name = name_copy; |
| 257 | if ((if_name = strchr(media_name, ':')) == NULL) |
| 258 | return 0; |
| 259 | *(if_name++) = 0; |
| 260 | media_len = if_name - media_name; |
| 261 | if_len = strlen(if_name) + 1; |
| 262 | |
| 263 | /* validate component parts of bearer name */ |
| 264 | |
| 265 | if ((media_len <= 1) || (media_len > TIPC_MAX_MEDIA_NAME) || |
| 266 | (if_len <= 1) || (if_len > TIPC_MAX_IF_NAME) || |
| 267 | (strspn(media_name, tipc_alphabet) != (media_len - 1)) || |
| 268 | (strspn(if_name, tipc_alphabet) != (if_len - 1))) |
| 269 | return 0; |
| 270 | |
| 271 | /* return bearer name components, if necessary */ |
| 272 | |
| 273 | if (name_parts) { |
| 274 | strcpy(name_parts->media_name, media_name); |
| 275 | strcpy(name_parts->if_name, if_name); |
| 276 | } |
| 277 | return 1; |
| 278 | } |
| 279 | |
| 280 | /** |
| 281 | * bearer_find - locates bearer object with matching bearer name |
| 282 | */ |
| 283 | |
| 284 | static struct bearer *bearer_find(const char *name) |
| 285 | { |
| 286 | struct bearer *b_ptr; |
| 287 | u32 i; |
| 288 | |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 289 | if (tipc_mode != TIPC_NET_MODE) |
| 290 | return NULL; |
| 291 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 292 | for (i = 0, b_ptr = tipc_bearers; i < MAX_BEARERS; i++, b_ptr++) { |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 293 | if (b_ptr->active && (!strcmp(b_ptr->publ.name, name))) |
| 294 | return b_ptr; |
| 295 | } |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 296 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 297 | } |
| 298 | |
| 299 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 300 | * tipc_bearer_find_interface - locates bearer object with matching interface name |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 301 | */ |
| 302 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 303 | struct bearer *tipc_bearer_find_interface(const char *if_name) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 304 | { |
| 305 | struct bearer *b_ptr; |
| 306 | char *b_if_name; |
| 307 | u32 i; |
| 308 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 309 | for (i = 0, b_ptr = tipc_bearers; i < MAX_BEARERS; i++, b_ptr++) { |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 310 | if (!b_ptr->active) |
| 311 | continue; |
| 312 | b_if_name = strchr(b_ptr->publ.name, ':') + 1; |
| 313 | if (!strcmp(b_if_name, if_name)) |
| 314 | return b_ptr; |
| 315 | } |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 316 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 317 | } |
| 318 | |
| 319 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 320 | * tipc_bearer_get_names - record names of bearers in buffer |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 321 | */ |
| 322 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 323 | struct sk_buff *tipc_bearer_get_names(void) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 324 | { |
| 325 | struct sk_buff *buf; |
| 326 | struct media *m_ptr; |
| 327 | struct bearer *b_ptr; |
| 328 | int i, j; |
| 329 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 330 | buf = tipc_cfg_reply_alloc(MAX_BEARERS * TLV_SPACE(TIPC_MAX_BEARER_NAME)); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 331 | if (!buf) |
| 332 | return NULL; |
| 333 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 334 | read_lock_bh(&tipc_net_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 335 | for (i = 0, m_ptr = media_list; i < media_count; i++, m_ptr++) { |
| 336 | for (j = 0; j < MAX_BEARERS; j++) { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 337 | b_ptr = &tipc_bearers[j]; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 338 | if (b_ptr->active && (b_ptr->media == m_ptr)) { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 339 | tipc_cfg_append_tlv(buf, TIPC_TLV_BEARER_NAME, |
| 340 | b_ptr->publ.name, |
| 341 | strlen(b_ptr->publ.name) + 1); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 342 | } |
| 343 | } |
| 344 | } |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 345 | read_unlock_bh(&tipc_net_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 346 | return buf; |
| 347 | } |
| 348 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 349 | void tipc_bearer_add_dest(struct bearer *b_ptr, u32 dest) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 350 | { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 351 | tipc_nmap_add(&b_ptr->nodes, dest); |
| 352 | tipc_disc_update_link_req(b_ptr->link_req); |
| 353 | tipc_bcbearer_sort(); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 354 | } |
| 355 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 356 | void tipc_bearer_remove_dest(struct bearer *b_ptr, u32 dest) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 357 | { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 358 | tipc_nmap_remove(&b_ptr->nodes, dest); |
| 359 | tipc_disc_update_link_req(b_ptr->link_req); |
| 360 | tipc_bcbearer_sort(); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 361 | } |
| 362 | |
| 363 | /* |
| 364 | * bearer_push(): Resolve bearer congestion. Force the waiting |
| 365 | * links to push out their unsent packets, one packet per link |
| 366 | * per iteration, until all packets are gone or congestion reoccurs. |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 367 | * 'tipc_net_lock' is read_locked when this function is called |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 368 | * bearer.lock must be taken before calling |
| 369 | * Returns binary true(1) ore false(0) |
| 370 | */ |
| 371 | static int bearer_push(struct bearer *b_ptr) |
| 372 | { |
| 373 | u32 res = TIPC_OK; |
| 374 | struct link *ln, *tln; |
| 375 | |
| 376 | if (b_ptr->publ.blocked) |
| 377 | return 0; |
| 378 | |
| 379 | while (!list_empty(&b_ptr->cong_links) && (res != PUSH_FAILED)) { |
| 380 | list_for_each_entry_safe(ln, tln, &b_ptr->cong_links, link_list) { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 381 | res = tipc_link_push_packet(ln); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 382 | if (res == PUSH_FAILED) |
| 383 | break; |
| 384 | if (res == PUSH_FINISHED) |
| 385 | list_move_tail(&ln->link_list, &b_ptr->links); |
| 386 | } |
| 387 | } |
| 388 | return list_empty(&b_ptr->cong_links); |
| 389 | } |
| 390 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 391 | void tipc_bearer_lock_push(struct bearer *b_ptr) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 392 | { |
| 393 | int res; |
| 394 | |
| 395 | spin_lock_bh(&b_ptr->publ.lock); |
| 396 | res = bearer_push(b_ptr); |
| 397 | spin_unlock_bh(&b_ptr->publ.lock); |
| 398 | if (res) |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 399 | tipc_bcbearer_push(); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 400 | } |
| 401 | |
| 402 | |
| 403 | /* |
| 404 | * Interrupt enabling new requests after bearer congestion or blocking: |
| 405 | * See bearer_send(). |
| 406 | */ |
| 407 | void tipc_continue(struct tipc_bearer *tb_ptr) |
| 408 | { |
| 409 | struct bearer *b_ptr = (struct bearer *)tb_ptr; |
| 410 | |
| 411 | spin_lock_bh(&b_ptr->publ.lock); |
| 412 | b_ptr->continue_count++; |
| 413 | if (!list_empty(&b_ptr->cong_links)) |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 414 | tipc_k_signal((Handler)tipc_bearer_lock_push, (unsigned long)b_ptr); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 415 | b_ptr->publ.blocked = 0; |
| 416 | spin_unlock_bh(&b_ptr->publ.lock); |
| 417 | } |
| 418 | |
| 419 | /* |
| 420 | * Schedule link for sending of messages after the bearer |
| 421 | * has been deblocked by 'continue()'. This method is called |
| 422 | * when somebody tries to send a message via this link while |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 423 | * the bearer is congested. 'tipc_net_lock' is in read_lock here |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 424 | * bearer.lock is busy |
| 425 | */ |
| 426 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 427 | static void tipc_bearer_schedule_unlocked(struct bearer *b_ptr, struct link *l_ptr) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 428 | { |
| 429 | list_move_tail(&l_ptr->link_list, &b_ptr->cong_links); |
| 430 | } |
| 431 | |
| 432 | /* |
| 433 | * Schedule link for sending of messages after the bearer |
| 434 | * has been deblocked by 'continue()'. This method is called |
| 435 | * when somebody tries to send a message via this link while |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 436 | * the bearer is congested. 'tipc_net_lock' is in read_lock here, |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 437 | * bearer.lock is free |
| 438 | */ |
| 439 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 440 | void tipc_bearer_schedule(struct bearer *b_ptr, struct link *l_ptr) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 441 | { |
| 442 | spin_lock_bh(&b_ptr->publ.lock); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 443 | tipc_bearer_schedule_unlocked(b_ptr, l_ptr); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 444 | spin_unlock_bh(&b_ptr->publ.lock); |
| 445 | } |
| 446 | |
| 447 | |
| 448 | /* |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 449 | * tipc_bearer_resolve_congestion(): Check if there is bearer congestion, |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 450 | * and if there is, try to resolve it before returning. |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 451 | * 'tipc_net_lock' is read_locked when this function is called |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 452 | */ |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 453 | int tipc_bearer_resolve_congestion(struct bearer *b_ptr, struct link *l_ptr) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 454 | { |
| 455 | int res = 1; |
| 456 | |
| 457 | if (list_empty(&b_ptr->cong_links)) |
| 458 | return 1; |
| 459 | spin_lock_bh(&b_ptr->publ.lock); |
| 460 | if (!bearer_push(b_ptr)) { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 461 | tipc_bearer_schedule_unlocked(b_ptr, l_ptr); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 462 | res = 0; |
| 463 | } |
| 464 | spin_unlock_bh(&b_ptr->publ.lock); |
| 465 | return res; |
| 466 | } |
| 467 | |
| 468 | |
| 469 | /** |
| 470 | * tipc_enable_bearer - enable bearer with the given name |
| 471 | */ |
| 472 | |
| 473 | int tipc_enable_bearer(const char *name, u32 bcast_scope, u32 priority) |
| 474 | { |
| 475 | struct bearer *b_ptr; |
| 476 | struct media *m_ptr; |
| 477 | struct bearer_name b_name; |
| 478 | char addr_string[16]; |
| 479 | u32 bearer_id; |
| 480 | u32 with_this_prio; |
| 481 | u32 i; |
| 482 | int res = -EINVAL; |
| 483 | |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 484 | if (tipc_mode != TIPC_NET_MODE) { |
| 485 | warn("Bearer <%s> rejected, not supported in standalone mode\n", |
| 486 | name); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 487 | return -ENOPROTOOPT; |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 488 | } |
| 489 | if (!bearer_name_validate(name, &b_name)) { |
| 490 | warn("Bearer <%s> rejected, illegal name\n", name); |
Per Liden | 16cb4b3 | 2006-01-13 22:22:22 +0100 | [diff] [blame] | 491 | return -EINVAL; |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 492 | } |
| 493 | if (!tipc_addr_domain_valid(bcast_scope) || |
| 494 | !in_scope(bcast_scope, tipc_own_addr)) { |
| 495 | warn("Bearer <%s> rejected, illegal broadcast scope\n", name); |
| 496 | return -EINVAL; |
| 497 | } |
Per Liden | 16cb4b3 | 2006-01-13 22:22:22 +0100 | [diff] [blame] | 498 | if ((priority < TIPC_MIN_LINK_PRI || |
| 499 | priority > TIPC_MAX_LINK_PRI) && |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 500 | (priority != TIPC_MEDIA_LINK_PRI)) { |
| 501 | warn("Bearer <%s> rejected, illegal priority\n", name); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 502 | return -EINVAL; |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 503 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 504 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 505 | write_lock_bh(&tipc_net_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 506 | |
| 507 | m_ptr = media_find(b_name.media_name); |
| 508 | if (!m_ptr) { |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 509 | warn("Bearer <%s> rejected, media <%s> not registered\n", name, |
| 510 | b_name.media_name); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 511 | goto failed; |
| 512 | } |
Per Liden | 16cb4b3 | 2006-01-13 22:22:22 +0100 | [diff] [blame] | 513 | |
| 514 | if (priority == TIPC_MEDIA_LINK_PRI) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 515 | priority = m_ptr->priority; |
| 516 | |
| 517 | restart: |
| 518 | bearer_id = MAX_BEARERS; |
| 519 | with_this_prio = 1; |
| 520 | for (i = MAX_BEARERS; i-- != 0; ) { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 521 | if (!tipc_bearers[i].active) { |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 522 | bearer_id = i; |
| 523 | continue; |
| 524 | } |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 525 | if (!strcmp(name, tipc_bearers[i].publ.name)) { |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 526 | warn("Bearer <%s> rejected, already enabled\n", name); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 527 | goto failed; |
| 528 | } |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 529 | if ((tipc_bearers[i].priority == priority) && |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 530 | (++with_this_prio > 2)) { |
| 531 | if (priority-- == 0) { |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 532 | warn("Bearer <%s> rejected, duplicate priority\n", |
| 533 | name); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 534 | goto failed; |
| 535 | } |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 536 | warn("Bearer <%s> priority adjustment required %u->%u\n", |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 537 | name, priority + 1, priority); |
| 538 | goto restart; |
| 539 | } |
| 540 | } |
| 541 | if (bearer_id >= MAX_BEARERS) { |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 542 | warn("Bearer <%s> rejected, bearer limit reached (%u)\n", |
| 543 | name, MAX_BEARERS); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 544 | goto failed; |
| 545 | } |
| 546 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 547 | b_ptr = &tipc_bearers[bearer_id]; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 548 | memset(b_ptr, 0, sizeof(struct bearer)); |
| 549 | |
| 550 | strcpy(b_ptr->publ.name, name); |
| 551 | res = m_ptr->enable_bearer(&b_ptr->publ); |
| 552 | if (res) { |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 553 | warn("Bearer <%s> rejected, enable failure (%d)\n", name, -res); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 554 | goto failed; |
| 555 | } |
| 556 | |
| 557 | b_ptr->identity = bearer_id; |
| 558 | b_ptr->media = m_ptr; |
| 559 | b_ptr->net_plane = bearer_id + 'A'; |
| 560 | b_ptr->active = 1; |
| 561 | b_ptr->detect_scope = bcast_scope; |
| 562 | b_ptr->priority = priority; |
| 563 | INIT_LIST_HEAD(&b_ptr->cong_links); |
| 564 | INIT_LIST_HEAD(&b_ptr->links); |
| 565 | if (m_ptr->bcast) { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 566 | b_ptr->link_req = tipc_disc_init_link_req(b_ptr, &m_ptr->bcast_addr, |
| 567 | bcast_scope, 2); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 568 | } |
Ingo Molnar | 34af946 | 2006-06-27 02:53:55 -0700 | [diff] [blame] | 569 | spin_lock_init(&b_ptr->publ.lock); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 570 | write_unlock_bh(&tipc_net_lock); |
Per Liden | 16cb4b3 | 2006-01-13 22:22:22 +0100 | [diff] [blame] | 571 | info("Enabled bearer <%s>, discovery domain %s, priority %u\n", |
| 572 | name, addr_string_fill(addr_string, bcast_scope), priority); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 573 | return 0; |
| 574 | failed: |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 575 | write_unlock_bh(&tipc_net_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 576 | return res; |
| 577 | } |
| 578 | |
| 579 | /** |
| 580 | * tipc_block_bearer(): Block the bearer with the given name, |
| 581 | * and reset all its links |
| 582 | */ |
| 583 | |
| 584 | int tipc_block_bearer(const char *name) |
| 585 | { |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 586 | struct bearer *b_ptr = NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 587 | struct link *l_ptr; |
| 588 | struct link *temp_l_ptr; |
| 589 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 590 | read_lock_bh(&tipc_net_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 591 | b_ptr = bearer_find(name); |
| 592 | if (!b_ptr) { |
| 593 | warn("Attempt to block unknown bearer <%s>\n", name); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 594 | read_unlock_bh(&tipc_net_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 595 | return -EINVAL; |
| 596 | } |
| 597 | |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 598 | info("Blocking bearer <%s>\n", name); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 599 | spin_lock_bh(&b_ptr->publ.lock); |
| 600 | b_ptr->publ.blocked = 1; |
| 601 | list_for_each_entry_safe(l_ptr, temp_l_ptr, &b_ptr->links, link_list) { |
| 602 | struct node *n_ptr = l_ptr->owner; |
| 603 | |
| 604 | spin_lock_bh(&n_ptr->lock); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 605 | tipc_link_reset(l_ptr); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 606 | spin_unlock_bh(&n_ptr->lock); |
| 607 | } |
| 608 | spin_unlock_bh(&b_ptr->publ.lock); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 609 | read_unlock_bh(&tipc_net_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 610 | return TIPC_OK; |
| 611 | } |
| 612 | |
| 613 | /** |
| 614 | * bearer_disable - |
| 615 | * |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 616 | * Note: This routine assumes caller holds tipc_net_lock. |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 617 | */ |
| 618 | |
| 619 | static int bearer_disable(const char *name) |
| 620 | { |
| 621 | struct bearer *b_ptr; |
| 622 | struct link *l_ptr; |
| 623 | struct link *temp_l_ptr; |
| 624 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 625 | b_ptr = bearer_find(name); |
| 626 | if (!b_ptr) { |
| 627 | warn("Attempt to disable unknown bearer <%s>\n", name); |
| 628 | return -EINVAL; |
| 629 | } |
| 630 | |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 631 | info("Disabling bearer <%s>\n", name); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 632 | tipc_disc_stop_link_req(b_ptr->link_req); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 633 | spin_lock_bh(&b_ptr->publ.lock); |
| 634 | b_ptr->link_req = NULL; |
| 635 | b_ptr->publ.blocked = 1; |
| 636 | if (b_ptr->media->disable_bearer) { |
| 637 | spin_unlock_bh(&b_ptr->publ.lock); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 638 | write_unlock_bh(&tipc_net_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 639 | b_ptr->media->disable_bearer(&b_ptr->publ); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 640 | write_lock_bh(&tipc_net_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 641 | spin_lock_bh(&b_ptr->publ.lock); |
| 642 | } |
| 643 | list_for_each_entry_safe(l_ptr, temp_l_ptr, &b_ptr->links, link_list) { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 644 | tipc_link_delete(l_ptr); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 645 | } |
| 646 | spin_unlock_bh(&b_ptr->publ.lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 647 | memset(b_ptr, 0, sizeof(struct bearer)); |
| 648 | return TIPC_OK; |
| 649 | } |
| 650 | |
| 651 | int tipc_disable_bearer(const char *name) |
| 652 | { |
| 653 | int res; |
| 654 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 655 | write_lock_bh(&tipc_net_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 656 | res = bearer_disable(name); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 657 | write_unlock_bh(&tipc_net_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 658 | return res; |
| 659 | } |
| 660 | |
| 661 | |
| 662 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 663 | int tipc_bearer_init(void) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 664 | { |
| 665 | int res; |
| 666 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 667 | write_lock_bh(&tipc_net_lock); |
| 668 | tipc_bearers = kmalloc(MAX_BEARERS * sizeof(struct bearer), GFP_ATOMIC); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 669 | media_list = kmalloc(MAX_MEDIA * sizeof(struct media), GFP_ATOMIC); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 670 | if (tipc_bearers && media_list) { |
| 671 | memset(tipc_bearers, 0, MAX_BEARERS * sizeof(struct bearer)); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 672 | memset(media_list, 0, MAX_MEDIA * sizeof(struct media)); |
| 673 | res = TIPC_OK; |
| 674 | } else { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 675 | kfree(tipc_bearers); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 676 | kfree(media_list); |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 677 | tipc_bearers = NULL; |
| 678 | media_list = NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 679 | res = -ENOMEM; |
| 680 | } |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 681 | write_unlock_bh(&tipc_net_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 682 | return res; |
| 683 | } |
| 684 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 685 | void tipc_bearer_stop(void) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 686 | { |
| 687 | u32 i; |
| 688 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 689 | if (!tipc_bearers) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 690 | return; |
| 691 | |
| 692 | for (i = 0; i < MAX_BEARERS; i++) { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 693 | if (tipc_bearers[i].active) |
| 694 | tipc_bearers[i].publ.blocked = 1; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 695 | } |
| 696 | for (i = 0; i < MAX_BEARERS; i++) { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 697 | if (tipc_bearers[i].active) |
| 698 | bearer_disable(tipc_bearers[i].publ.name); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 699 | } |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 700 | kfree(tipc_bearers); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 701 | kfree(media_list); |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 702 | tipc_bearers = NULL; |
| 703 | media_list = NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 704 | media_count = 0; |
| 705 | } |
| 706 | |
| 707 | |