Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1 | /* |
| 2 | * net/tipc/name_table.c: TIPC name table code |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 3 | * |
Per Liden | 593a5f2 | 2006-01-11 19:14:19 +0100 | [diff] [blame] | 4 | * Copyright (c) 2000-2006, Ericsson AB |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 5 | * Copyright (c) 2004-2008, 2010-2011, 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" |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 39 | #include "name_table.h" |
| 40 | #include "name_distr.h" |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 41 | #include "subscr.h" |
| 42 | #include "port.h" |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 43 | |
Adrian Bunk | 988f088 | 2006-03-20 22:37:52 -0800 | [diff] [blame] | 44 | static int tipc_nametbl_size = 1024; /* must be a power of 2 */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 45 | |
| 46 | /** |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 47 | * struct name_info - name sequence publication info |
Allan Stephens | 968edbe | 2008-07-14 22:45:33 -0700 | [diff] [blame] | 48 | * @node_list: circular list of publications made by own node |
| 49 | * @cluster_list: circular list of publications made by own cluster |
| 50 | * @zone_list: circular list of publications made by own zone |
| 51 | * @node_list_size: number of entries in "node_list" |
| 52 | * @cluster_list_size: number of entries in "cluster_list" |
| 53 | * @zone_list_size: number of entries in "zone_list" |
| 54 | * |
| 55 | * Note: The zone list always contains at least one entry, since all |
| 56 | * publications of the associated name sequence belong to it. |
| 57 | * (The cluster and node lists may be empty.) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 58 | */ |
| 59 | |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 60 | struct name_info { |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 61 | struct list_head node_list; |
| 62 | struct list_head cluster_list; |
| 63 | struct list_head zone_list; |
Allan Stephens | 968edbe | 2008-07-14 22:45:33 -0700 | [diff] [blame] | 64 | u32 node_list_size; |
| 65 | u32 cluster_list_size; |
| 66 | u32 zone_list_size; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 67 | }; |
| 68 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 69 | /** |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 70 | * struct sub_seq - container for all published instances of a name sequence |
| 71 | * @lower: name sequence lower bound |
| 72 | * @upper: name sequence upper bound |
| 73 | * @info: pointer to name sequence publication info |
| 74 | */ |
| 75 | |
| 76 | struct sub_seq { |
| 77 | u32 lower; |
| 78 | u32 upper; |
| 79 | struct name_info *info; |
| 80 | }; |
| 81 | |
| 82 | /** |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 83 | * struct name_seq - container for all published instances of a name type |
| 84 | * @type: 32 bit 'type' value for name sequence |
| 85 | * @sseq: pointer to dynamically-sized array of sub-sequences of this 'type'; |
| 86 | * sub-sequences are sorted in ascending order |
| 87 | * @alloc: number of sub-sequences currently in array |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 88 | * @first_free: array index of first unused sub-sequence entry |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 89 | * @ns_list: links to adjacent name sequences in hash chain |
| 90 | * @subscriptions: list of subscriptions for this 'type' |
Allan Stephens | 307fdf5 | 2008-06-04 17:38:22 -0700 | [diff] [blame] | 91 | * @lock: spinlock controlling access to publication lists of all sub-sequences |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 92 | */ |
| 93 | |
| 94 | struct name_seq { |
| 95 | u32 type; |
| 96 | struct sub_seq *sseqs; |
| 97 | u32 alloc; |
| 98 | u32 first_free; |
| 99 | struct hlist_node ns_list; |
| 100 | struct list_head subscriptions; |
| 101 | spinlock_t lock; |
| 102 | }; |
| 103 | |
| 104 | /** |
| 105 | * struct name_table - table containing all existing port name publications |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 106 | * @types: pointer to fixed-sized array of name sequence lists, |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 107 | * accessed via hashing on 'type'; name sequence lists are *not* sorted |
| 108 | * @local_publ_count: number of publications issued by this node |
| 109 | */ |
| 110 | |
| 111 | struct name_table { |
| 112 | struct hlist_head *types; |
| 113 | u32 local_publ_count; |
| 114 | }; |
| 115 | |
Allan Stephens | e3ec9c7 | 2010-12-31 18:59:34 +0000 | [diff] [blame] | 116 | static struct name_table table; |
Ingo Molnar | 34af946 | 2006-06-27 02:53:55 -0700 | [diff] [blame] | 117 | DEFINE_RWLOCK(tipc_nametbl_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 118 | |
Sam Ravnborg | 05790c6 | 2006-03-20 22:37:04 -0800 | [diff] [blame] | 119 | static int hash(int x) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 120 | { |
Eric Dumazet | a02cec2 | 2010-09-22 20:43:57 +0000 | [diff] [blame] | 121 | return x & (tipc_nametbl_size - 1); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 122 | } |
| 123 | |
| 124 | /** |
| 125 | * publ_create - create a publication structure |
| 126 | */ |
| 127 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 128 | static struct publication *publ_create(u32 type, u32 lower, u32 upper, |
| 129 | u32 scope, u32 node, u32 port_ref, |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 130 | u32 key) |
| 131 | { |
Panagiotis Issaris | 0da974f | 2006-07-21 14:51:30 -0700 | [diff] [blame] | 132 | struct publication *publ = kzalloc(sizeof(*publ), GFP_ATOMIC); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 133 | if (publ == NULL) { |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 134 | warn("Publication creation failure, no memory\n"); |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 135 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 136 | } |
| 137 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 138 | publ->type = type; |
| 139 | publ->lower = lower; |
| 140 | publ->upper = upper; |
| 141 | publ->scope = scope; |
| 142 | publ->node = node; |
| 143 | publ->ref = port_ref; |
| 144 | publ->key = key; |
| 145 | INIT_LIST_HEAD(&publ->local_list); |
| 146 | INIT_LIST_HEAD(&publ->pport_list); |
| 147 | INIT_LIST_HEAD(&publ->subscr.nodesub_list); |
| 148 | return publ; |
| 149 | } |
| 150 | |
| 151 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 152 | * tipc_subseq_alloc - allocate a specified number of sub-sequence structures |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 153 | */ |
| 154 | |
Adrian Bunk | 988f088 | 2006-03-20 22:37:52 -0800 | [diff] [blame] | 155 | static struct sub_seq *tipc_subseq_alloc(u32 cnt) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 156 | { |
Panagiotis Issaris | 0da974f | 2006-07-21 14:51:30 -0700 | [diff] [blame] | 157 | struct sub_seq *sseq = kcalloc(cnt, sizeof(struct sub_seq), GFP_ATOMIC); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 158 | return sseq; |
| 159 | } |
| 160 | |
| 161 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 162 | * tipc_nameseq_create - create a name sequence structure for the specified 'type' |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 163 | * |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 164 | * Allocates a single sub-sequence structure and sets it to all 0's. |
| 165 | */ |
| 166 | |
Adrian Bunk | 988f088 | 2006-03-20 22:37:52 -0800 | [diff] [blame] | 167 | static struct name_seq *tipc_nameseq_create(u32 type, struct hlist_head *seq_head) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 168 | { |
Panagiotis Issaris | 0da974f | 2006-07-21 14:51:30 -0700 | [diff] [blame] | 169 | struct name_seq *nseq = kzalloc(sizeof(*nseq), GFP_ATOMIC); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 170 | struct sub_seq *sseq = tipc_subseq_alloc(1); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 171 | |
| 172 | if (!nseq || !sseq) { |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 173 | warn("Name sequence creation failed, no memory\n"); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 174 | kfree(nseq); |
| 175 | kfree(sseq); |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 176 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 177 | } |
| 178 | |
Ingo Molnar | 34af946 | 2006-06-27 02:53:55 -0700 | [diff] [blame] | 179 | spin_lock_init(&nseq->lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 180 | nseq->type = type; |
| 181 | nseq->sseqs = sseq; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 182 | nseq->alloc = 1; |
| 183 | INIT_HLIST_NODE(&nseq->ns_list); |
| 184 | INIT_LIST_HEAD(&nseq->subscriptions); |
| 185 | hlist_add_head(&nseq->ns_list, seq_head); |
| 186 | return nseq; |
| 187 | } |
| 188 | |
| 189 | /** |
| 190 | * nameseq_find_subseq - find sub-sequence (if any) matching a name instance |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 191 | * |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 192 | * Very time-critical, so binary searches through sub-sequence array. |
| 193 | */ |
| 194 | |
Sam Ravnborg | 05790c6 | 2006-03-20 22:37:04 -0800 | [diff] [blame] | 195 | static struct sub_seq *nameseq_find_subseq(struct name_seq *nseq, |
| 196 | u32 instance) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 197 | { |
| 198 | struct sub_seq *sseqs = nseq->sseqs; |
| 199 | int low = 0; |
| 200 | int high = nseq->first_free - 1; |
| 201 | int mid; |
| 202 | |
| 203 | while (low <= high) { |
| 204 | mid = (low + high) / 2; |
| 205 | if (instance < sseqs[mid].lower) |
| 206 | high = mid - 1; |
| 207 | else if (instance > sseqs[mid].upper) |
| 208 | low = mid + 1; |
| 209 | else |
| 210 | return &sseqs[mid]; |
| 211 | } |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 212 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 213 | } |
| 214 | |
| 215 | /** |
| 216 | * nameseq_locate_subseq - determine position of name instance in sub-sequence |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 217 | * |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 218 | * Returns index in sub-sequence array of the entry that contains the specified |
| 219 | * instance value; if no entry contains that value, returns the position |
| 220 | * where a new entry for it would be inserted in the array. |
| 221 | * |
| 222 | * Note: Similar to binary search code for locating a sub-sequence. |
| 223 | */ |
| 224 | |
| 225 | static u32 nameseq_locate_subseq(struct name_seq *nseq, u32 instance) |
| 226 | { |
| 227 | struct sub_seq *sseqs = nseq->sseqs; |
| 228 | int low = 0; |
| 229 | int high = nseq->first_free - 1; |
| 230 | int mid; |
| 231 | |
| 232 | while (low <= high) { |
| 233 | mid = (low + high) / 2; |
| 234 | if (instance < sseqs[mid].lower) |
| 235 | high = mid - 1; |
| 236 | else if (instance > sseqs[mid].upper) |
| 237 | low = mid + 1; |
| 238 | else |
| 239 | return mid; |
| 240 | } |
| 241 | return low; |
| 242 | } |
| 243 | |
| 244 | /** |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 245 | * tipc_nameseq_insert_publ - |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 246 | */ |
| 247 | |
Adrian Bunk | 988f088 | 2006-03-20 22:37:52 -0800 | [diff] [blame] | 248 | static struct publication *tipc_nameseq_insert_publ(struct name_seq *nseq, |
| 249 | u32 type, u32 lower, u32 upper, |
| 250 | u32 scope, u32 node, u32 port, u32 key) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 251 | { |
Paul Gortmaker | fead390 | 2011-12-29 20:43:44 -0500 | [diff] [blame] | 252 | struct tipc_subscription *s; |
| 253 | struct tipc_subscription *st; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 254 | struct publication *publ; |
| 255 | struct sub_seq *sseq; |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 256 | struct name_info *info; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 257 | int created_subseq = 0; |
| 258 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 259 | sseq = nameseq_find_subseq(nseq, lower); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 260 | if (sseq) { |
| 261 | |
| 262 | /* Lower end overlaps existing entry => need an exact match */ |
| 263 | |
| 264 | if ((sseq->lower != lower) || (sseq->upper != upper)) { |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 265 | warn("Cannot publish {%u,%u,%u}, overlap error\n", |
| 266 | type, lower, upper); |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 267 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 268 | } |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 269 | |
| 270 | info = sseq->info; |
Allan Stephens | f80c24d | 2011-11-03 11:12:01 -0400 | [diff] [blame] | 271 | |
| 272 | /* Check if an identical publication already exists */ |
| 273 | list_for_each_entry(publ, &info->zone_list, zone_list) { |
| 274 | if ((publ->ref == port) && (publ->key == key) && |
| 275 | (!publ->node || (publ->node == node))) |
| 276 | return NULL; |
| 277 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 278 | } else { |
| 279 | u32 inspos; |
| 280 | struct sub_seq *freesseq; |
| 281 | |
| 282 | /* Find where lower end should be inserted */ |
| 283 | |
| 284 | inspos = nameseq_locate_subseq(nseq, lower); |
| 285 | |
| 286 | /* Fail if upper end overlaps into an existing entry */ |
| 287 | |
| 288 | if ((inspos < nseq->first_free) && |
| 289 | (upper >= nseq->sseqs[inspos].lower)) { |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 290 | warn("Cannot publish {%u,%u,%u}, overlap error\n", |
| 291 | type, lower, upper); |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 292 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 293 | } |
| 294 | |
| 295 | /* Ensure there is space for new sub-sequence */ |
| 296 | |
| 297 | if (nseq->first_free == nseq->alloc) { |
Allan Stephens | 9ab230f | 2006-06-25 23:37:24 -0700 | [diff] [blame] | 298 | struct sub_seq *sseqs = tipc_subseq_alloc(nseq->alloc * 2); |
| 299 | |
| 300 | if (!sseqs) { |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 301 | warn("Cannot publish {%u,%u,%u}, no memory\n", |
| 302 | type, lower, upper); |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 303 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 304 | } |
Allan Stephens | 9ab230f | 2006-06-25 23:37:24 -0700 | [diff] [blame] | 305 | memcpy(sseqs, nseq->sseqs, |
| 306 | nseq->alloc * sizeof(struct sub_seq)); |
| 307 | kfree(nseq->sseqs); |
| 308 | nseq->sseqs = sseqs; |
| 309 | nseq->alloc *= 2; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 310 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 311 | |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 312 | info = kzalloc(sizeof(*info), GFP_ATOMIC); |
| 313 | if (!info) { |
| 314 | warn("Cannot publish {%u,%u,%u}, no memory\n", |
| 315 | type, lower, upper); |
| 316 | return NULL; |
| 317 | } |
| 318 | |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 319 | INIT_LIST_HEAD(&info->node_list); |
| 320 | INIT_LIST_HEAD(&info->cluster_list); |
| 321 | INIT_LIST_HEAD(&info->zone_list); |
| 322 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 323 | /* Insert new sub-sequence */ |
| 324 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 325 | sseq = &nseq->sseqs[inspos]; |
| 326 | freesseq = &nseq->sseqs[nseq->first_free]; |
Allan Stephens | 0e65967 | 2010-12-31 18:59:32 +0000 | [diff] [blame] | 327 | memmove(sseq + 1, sseq, (freesseq - sseq) * sizeof(*sseq)); |
| 328 | memset(sseq, 0, sizeof(*sseq)); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 329 | nseq->first_free++; |
| 330 | sseq->lower = lower; |
| 331 | sseq->upper = upper; |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 332 | sseq->info = info; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 333 | created_subseq = 1; |
| 334 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 335 | |
| 336 | /* Insert a publication: */ |
| 337 | |
| 338 | publ = publ_create(type, lower, upper, scope, node, port, key); |
| 339 | if (!publ) |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 340 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 341 | |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 342 | list_add(&publ->zone_list, &info->zone_list); |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 343 | info->zone_list_size++; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 344 | |
| 345 | if (in_own_cluster(node)) { |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 346 | list_add(&publ->cluster_list, &info->cluster_list); |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 347 | info->cluster_list_size++; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 348 | } |
| 349 | |
| 350 | if (node == tipc_own_addr) { |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 351 | list_add(&publ->node_list, &info->node_list); |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 352 | info->node_list_size++; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 353 | } |
| 354 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 355 | /* |
| 356 | * Any subscriptions waiting for notification? |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 357 | */ |
| 358 | list_for_each_entry_safe(s, st, &nseq->subscriptions, nameseq_list) { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 359 | tipc_subscr_report_overlap(s, |
| 360 | publ->lower, |
| 361 | publ->upper, |
| 362 | TIPC_PUBLISHED, |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 363 | publ->ref, |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 364 | publ->node, |
| 365 | created_subseq); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 366 | } |
| 367 | return publ; |
| 368 | } |
| 369 | |
| 370 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 371 | * tipc_nameseq_remove_publ - |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 372 | * |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 373 | * NOTE: There may be cases where TIPC is asked to remove a publication |
| 374 | * that is not in the name table. For example, if another node issues a |
| 375 | * publication for a name sequence that overlaps an existing name sequence |
| 376 | * the publication will not be recorded, which means the publication won't |
| 377 | * be found when the name sequence is later withdrawn by that node. |
| 378 | * A failed withdraw request simply returns a failure indication and lets the |
| 379 | * caller issue any error or warning messages associated with such a problem. |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 380 | */ |
| 381 | |
Adrian Bunk | 988f088 | 2006-03-20 22:37:52 -0800 | [diff] [blame] | 382 | static struct publication *tipc_nameseq_remove_publ(struct name_seq *nseq, u32 inst, |
| 383 | u32 node, u32 ref, u32 key) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 384 | { |
| 385 | struct publication *publ; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 386 | struct sub_seq *sseq = nameseq_find_subseq(nseq, inst); |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 387 | struct name_info *info; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 388 | struct sub_seq *free; |
Paul Gortmaker | fead390 | 2011-12-29 20:43:44 -0500 | [diff] [blame] | 389 | struct tipc_subscription *s, *st; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 390 | int removed_subseq = 0; |
| 391 | |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 392 | if (!sseq) |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 393 | return NULL; |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 394 | |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 395 | info = sseq->info; |
| 396 | |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 397 | /* Locate publication, if it exists */ |
| 398 | |
| 399 | list_for_each_entry(publ, &info->zone_list, zone_list) { |
| 400 | if ((publ->key == key) && (publ->ref == ref) && |
| 401 | (!publ->node || (publ->node == node))) |
| 402 | goto found; |
| 403 | } |
| 404 | return NULL; |
| 405 | |
| 406 | found: |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 407 | /* Remove publication from zone scope list */ |
| 408 | |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 409 | list_del(&publ->zone_list); |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 410 | info->zone_list_size--; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 411 | |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 412 | /* Remove publication from cluster scope list, if present */ |
| 413 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 414 | if (in_own_cluster(node)) { |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 415 | list_del(&publ->cluster_list); |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 416 | info->cluster_list_size--; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 417 | } |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 418 | |
| 419 | /* Remove publication from node scope list, if present */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 420 | |
| 421 | if (node == tipc_own_addr) { |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 422 | list_del(&publ->node_list); |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 423 | info->node_list_size--; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 424 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 425 | |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 426 | /* Contract subseq list if no more publications for that subseq */ |
| 427 | |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 428 | if (list_empty(&info->zone_list)) { |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 429 | kfree(info); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 430 | free = &nseq->sseqs[nseq->first_free--]; |
Allan Stephens | 0e65967 | 2010-12-31 18:59:32 +0000 | [diff] [blame] | 431 | memmove(sseq, sseq + 1, (free - (sseq + 1)) * sizeof(*sseq)); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 432 | removed_subseq = 1; |
| 433 | } |
| 434 | |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 435 | /* Notify any waiting subscriptions */ |
| 436 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 437 | list_for_each_entry_safe(s, st, &nseq->subscriptions, nameseq_list) { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 438 | tipc_subscr_report_overlap(s, |
| 439 | publ->lower, |
| 440 | publ->upper, |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 441 | TIPC_WITHDRAWN, |
| 442 | publ->ref, |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 443 | publ->node, |
| 444 | removed_subseq); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 445 | } |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 446 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 447 | return publ; |
| 448 | } |
| 449 | |
| 450 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 451 | * tipc_nameseq_subscribe: attach a subscription, and issue |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 452 | * the prescribed number of events if there is any sub- |
| 453 | * sequence overlapping with the requested sequence |
| 454 | */ |
| 455 | |
Paul Gortmaker | fead390 | 2011-12-29 20:43:44 -0500 | [diff] [blame] | 456 | static void tipc_nameseq_subscribe(struct name_seq *nseq, |
| 457 | struct tipc_subscription *s) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 458 | { |
| 459 | struct sub_seq *sseq = nseq->sseqs; |
| 460 | |
| 461 | list_add(&s->nameseq_list, &nseq->subscriptions); |
| 462 | |
| 463 | if (!sseq) |
| 464 | return; |
| 465 | |
| 466 | while (sseq != &nseq->sseqs[nseq->first_free]) { |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 467 | if (tipc_subscr_overlap(s, sseq->lower, sseq->upper)) { |
| 468 | struct publication *crs; |
| 469 | struct name_info *info = sseq->info; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 470 | int must_report = 1; |
| 471 | |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 472 | list_for_each_entry(crs, &info->zone_list, zone_list) { |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 473 | tipc_subscr_report_overlap(s, |
| 474 | sseq->lower, |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 475 | sseq->upper, |
| 476 | TIPC_PUBLISHED, |
| 477 | crs->ref, |
| 478 | crs->node, |
| 479 | must_report); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 480 | must_report = 0; |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 481 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 482 | } |
| 483 | sseq++; |
| 484 | } |
| 485 | } |
| 486 | |
| 487 | static struct name_seq *nametbl_find_seq(u32 type) |
| 488 | { |
| 489 | struct hlist_head *seq_head; |
| 490 | struct hlist_node *seq_node; |
| 491 | struct name_seq *ns; |
| 492 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 493 | seq_head = &table.types[hash(type)]; |
| 494 | hlist_for_each_entry(ns, seq_node, seq_head, ns_list) { |
Allan Stephens | b29f142 | 2010-12-31 18:59:25 +0000 | [diff] [blame] | 495 | if (ns->type == type) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 496 | return ns; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 497 | } |
| 498 | |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 499 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 500 | }; |
| 501 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 502 | struct publication *tipc_nametbl_insert_publ(u32 type, u32 lower, u32 upper, |
| 503 | u32 scope, u32 node, u32 port, u32 key) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 504 | { |
| 505 | struct name_seq *seq = nametbl_find_seq(type); |
| 506 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 507 | if (lower > upper) { |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 508 | warn("Failed to publish illegal {%u,%u,%u}\n", |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 509 | type, lower, upper); |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 510 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 511 | } |
| 512 | |
Allan Stephens | b29f142 | 2010-12-31 18:59:25 +0000 | [diff] [blame] | 513 | if (!seq) |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 514 | seq = tipc_nameseq_create(type, &table.types[hash(type)]); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 515 | if (!seq) |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 516 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 517 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 518 | return tipc_nameseq_insert_publ(seq, type, lower, upper, |
| 519 | scope, node, port, key); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 520 | } |
| 521 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 522 | struct publication *tipc_nametbl_remove_publ(u32 type, u32 lower, |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 523 | u32 node, u32 ref, u32 key) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 524 | { |
| 525 | struct publication *publ; |
| 526 | struct name_seq *seq = nametbl_find_seq(type); |
| 527 | |
| 528 | if (!seq) |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 529 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 530 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 531 | publ = tipc_nameseq_remove_publ(seq, lower, node, ref, key); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 532 | |
| 533 | if (!seq->first_free && list_empty(&seq->subscriptions)) { |
| 534 | hlist_del_init(&seq->ns_list); |
| 535 | kfree(seq->sseqs); |
| 536 | kfree(seq); |
| 537 | } |
| 538 | return publ; |
| 539 | } |
| 540 | |
| 541 | /* |
Allan Stephens | bc9f814 | 2011-11-07 17:00:54 -0500 | [diff] [blame] | 542 | * tipc_nametbl_translate - perform name translation |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 543 | * |
Allan Stephens | bc9f814 | 2011-11-07 17:00:54 -0500 | [diff] [blame] | 544 | * On entry, 'destnode' is the search domain used during translation. |
| 545 | * |
| 546 | * On exit: |
| 547 | * - if name translation is deferred to another node/cluster/zone, |
| 548 | * leaves 'destnode' unchanged (will be non-zero) and returns 0 |
| 549 | * - if name translation is attempted and succeeds, sets 'destnode' |
| 550 | * to publishing node and returns port reference (will be non-zero) |
| 551 | * - if name translation is attempted and fails, sets 'destnode' to 0 |
| 552 | * and returns 0 |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 553 | */ |
| 554 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 555 | u32 tipc_nametbl_translate(u32 type, u32 instance, u32 *destnode) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 556 | { |
| 557 | struct sub_seq *sseq; |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 558 | struct name_info *info; |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 559 | struct publication *publ; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 560 | struct name_seq *seq; |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 561 | u32 ref = 0; |
Allan Stephens | bc9f814 | 2011-11-07 17:00:54 -0500 | [diff] [blame] | 562 | u32 node = 0; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 563 | |
Allan Stephens | c68ca7b | 2010-05-11 14:30:12 +0000 | [diff] [blame] | 564 | if (!tipc_in_scope(*destnode, tipc_own_addr)) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 565 | return 0; |
| 566 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 567 | read_lock_bh(&tipc_nametbl_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 568 | seq = nametbl_find_seq(type); |
| 569 | if (unlikely(!seq)) |
| 570 | goto not_found; |
| 571 | sseq = nameseq_find_subseq(seq, instance); |
| 572 | if (unlikely(!sseq)) |
| 573 | goto not_found; |
| 574 | spin_lock_bh(&seq->lock); |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 575 | info = sseq->info; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 576 | |
| 577 | /* Closest-First Algorithm: */ |
| 578 | if (likely(!*destnode)) { |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 579 | if (!list_empty(&info->node_list)) { |
| 580 | publ = list_first_entry(&info->node_list, |
| 581 | struct publication, |
| 582 | node_list); |
| 583 | list_move_tail(&publ->node_list, |
| 584 | &info->node_list); |
| 585 | } else if (!list_empty(&info->cluster_list)) { |
| 586 | publ = list_first_entry(&info->cluster_list, |
| 587 | struct publication, |
| 588 | cluster_list); |
| 589 | list_move_tail(&publ->cluster_list, |
| 590 | &info->cluster_list); |
Allan Stephens | 8af4638 | 2011-05-30 11:27:50 -0400 | [diff] [blame] | 591 | } else { |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 592 | publ = list_first_entry(&info->zone_list, |
| 593 | struct publication, |
| 594 | zone_list); |
| 595 | list_move_tail(&publ->zone_list, |
| 596 | &info->zone_list); |
Allan Stephens | 8af4638 | 2011-05-30 11:27:50 -0400 | [diff] [blame] | 597 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 598 | } |
| 599 | |
| 600 | /* Round-Robin Algorithm: */ |
| 601 | else if (*destnode == tipc_own_addr) { |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 602 | if (list_empty(&info->node_list)) |
| 603 | goto no_match; |
| 604 | publ = list_first_entry(&info->node_list, struct publication, |
| 605 | node_list); |
| 606 | list_move_tail(&publ->node_list, &info->node_list); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 607 | } else if (in_own_cluster(*destnode)) { |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 608 | if (list_empty(&info->cluster_list)) |
| 609 | goto no_match; |
| 610 | publ = list_first_entry(&info->cluster_list, struct publication, |
| 611 | cluster_list); |
| 612 | list_move_tail(&publ->cluster_list, &info->cluster_list); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 613 | } else { |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 614 | publ = list_first_entry(&info->zone_list, struct publication, |
| 615 | zone_list); |
| 616 | list_move_tail(&publ->zone_list, &info->zone_list); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 617 | } |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 618 | |
| 619 | ref = publ->ref; |
Allan Stephens | bc9f814 | 2011-11-07 17:00:54 -0500 | [diff] [blame] | 620 | node = publ->node; |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 621 | no_match: |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 622 | spin_unlock_bh(&seq->lock); |
| 623 | not_found: |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 624 | read_unlock_bh(&tipc_nametbl_lock); |
Allan Stephens | bc9f814 | 2011-11-07 17:00:54 -0500 | [diff] [blame] | 625 | *destnode = node; |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 626 | return ref; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 627 | } |
| 628 | |
| 629 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 630 | * tipc_nametbl_mc_translate - find multicast destinations |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 631 | * |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 632 | * Creates list of all local ports that overlap the given multicast address; |
| 633 | * also determines if any off-node ports overlap. |
| 634 | * |
| 635 | * Note: Publications with a scope narrower than 'limit' are ignored. |
| 636 | * (i.e. local node-scope publications mustn't receive messages arriving |
| 637 | * from another node, even if the multcast link brought it here) |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 638 | * |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 639 | * Returns non-zero if any off-node ports overlap |
| 640 | */ |
| 641 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 642 | int tipc_nametbl_mc_translate(u32 type, u32 lower, u32 upper, u32 limit, |
Paul Gortmaker | 4584310 | 2011-12-29 20:33:30 -0500 | [diff] [blame] | 643 | struct tipc_port_list *dports) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 644 | { |
| 645 | struct name_seq *seq; |
| 646 | struct sub_seq *sseq; |
| 647 | struct sub_seq *sseq_stop; |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 648 | struct name_info *info; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 649 | int res = 0; |
| 650 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 651 | read_lock_bh(&tipc_nametbl_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 652 | seq = nametbl_find_seq(type); |
| 653 | if (!seq) |
| 654 | goto exit; |
| 655 | |
| 656 | spin_lock_bh(&seq->lock); |
| 657 | |
| 658 | sseq = seq->sseqs + nameseq_locate_subseq(seq, lower); |
| 659 | sseq_stop = seq->sseqs + seq->first_free; |
| 660 | for (; sseq != sseq_stop; sseq++) { |
| 661 | struct publication *publ; |
| 662 | |
| 663 | if (sseq->lower > upper) |
| 664 | break; |
Allan Stephens | 968edbe | 2008-07-14 22:45:33 -0700 | [diff] [blame] | 665 | |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 666 | info = sseq->info; |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 667 | list_for_each_entry(publ, &info->node_list, node_list) { |
| 668 | if (publ->scope <= limit) |
| 669 | tipc_port_list_add(dports, publ->ref); |
Allan Stephens | 968edbe | 2008-07-14 22:45:33 -0700 | [diff] [blame] | 670 | } |
| 671 | |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 672 | if (info->cluster_list_size != info->node_list_size) |
Allan Stephens | 968edbe | 2008-07-14 22:45:33 -0700 | [diff] [blame] | 673 | res = 1; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 674 | } |
| 675 | |
| 676 | spin_unlock_bh(&seq->lock); |
| 677 | exit: |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 678 | read_unlock_bh(&tipc_nametbl_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 679 | return res; |
| 680 | } |
| 681 | |
Allan Stephens | c422f1b | 2011-11-02 15:49:40 -0400 | [diff] [blame] | 682 | /* |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 683 | * tipc_nametbl_publish - add name publication to network name tables |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 684 | */ |
| 685 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 686 | struct publication *tipc_nametbl_publish(u32 type, u32 lower, u32 upper, |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 687 | u32 scope, u32 port_ref, u32 key) |
| 688 | { |
| 689 | struct publication *publ; |
| 690 | |
| 691 | if (table.local_publ_count >= tipc_max_publications) { |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 692 | warn("Publication failed, local publication limit reached (%u)\n", |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 693 | tipc_max_publications); |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 694 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 695 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 696 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 697 | write_lock_bh(&tipc_nametbl_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 698 | table.local_publ_count++; |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 699 | publ = tipc_nametbl_insert_publ(type, lower, upper, scope, |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 700 | tipc_own_addr, port_ref, key); |
Allan Stephens | a016892 | 2010-12-31 18:59:35 +0000 | [diff] [blame] | 701 | if (publ && (scope != TIPC_NODE_SCOPE)) |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 702 | tipc_named_publish(publ); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 703 | write_unlock_bh(&tipc_nametbl_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 704 | return publ; |
| 705 | } |
| 706 | |
| 707 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 708 | * tipc_nametbl_withdraw - withdraw name publication from network name tables |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 709 | */ |
| 710 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 711 | int tipc_nametbl_withdraw(u32 type, u32 lower, u32 ref, u32 key) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 712 | { |
| 713 | struct publication *publ; |
| 714 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 715 | write_lock_bh(&tipc_nametbl_lock); |
| 716 | publ = tipc_nametbl_remove_publ(type, lower, tipc_own_addr, ref, key); |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 717 | if (likely(publ)) { |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 718 | table.local_publ_count--; |
| 719 | if (publ->scope != TIPC_NODE_SCOPE) |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 720 | tipc_named_withdraw(publ); |
| 721 | write_unlock_bh(&tipc_nametbl_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 722 | list_del_init(&publ->pport_list); |
| 723 | kfree(publ); |
| 724 | return 1; |
| 725 | } |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 726 | write_unlock_bh(&tipc_nametbl_lock); |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 727 | err("Unable to remove local publication\n" |
| 728 | "(type=%u, lower=%u, ref=%u, key=%u)\n", |
| 729 | type, lower, ref, key); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 730 | return 0; |
| 731 | } |
| 732 | |
| 733 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 734 | * tipc_nametbl_subscribe - add a subscription object to the name table |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 735 | */ |
| 736 | |
Paul Gortmaker | fead390 | 2011-12-29 20:43:44 -0500 | [diff] [blame] | 737 | void tipc_nametbl_subscribe(struct tipc_subscription *s) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 738 | { |
| 739 | u32 type = s->seq.type; |
| 740 | struct name_seq *seq; |
| 741 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 742 | write_lock_bh(&tipc_nametbl_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 743 | seq = nametbl_find_seq(type); |
Allan Stephens | a016892 | 2010-12-31 18:59:35 +0000 | [diff] [blame] | 744 | if (!seq) |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 745 | seq = tipc_nameseq_create(type, &table.types[hash(type)]); |
Allan Stephens | 0e65967 | 2010-12-31 18:59:32 +0000 | [diff] [blame] | 746 | if (seq) { |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 747 | spin_lock_bh(&seq->lock); |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 748 | tipc_nameseq_subscribe(seq, s); |
| 749 | spin_unlock_bh(&seq->lock); |
| 750 | } else { |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 751 | warn("Failed to create subscription for {%u,%u,%u}\n", |
| 752 | s->seq.type, s->seq.lower, s->seq.upper); |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 753 | } |
| 754 | write_unlock_bh(&tipc_nametbl_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 755 | } |
| 756 | |
| 757 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 758 | * tipc_nametbl_unsubscribe - remove a subscription object from name table |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 759 | */ |
| 760 | |
Paul Gortmaker | fead390 | 2011-12-29 20:43:44 -0500 | [diff] [blame] | 761 | void tipc_nametbl_unsubscribe(struct tipc_subscription *s) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 762 | { |
| 763 | struct name_seq *seq; |
| 764 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 765 | write_lock_bh(&tipc_nametbl_lock); |
| 766 | seq = nametbl_find_seq(s->seq.type); |
Allan Stephens | 0e65967 | 2010-12-31 18:59:32 +0000 | [diff] [blame] | 767 | if (seq != NULL) { |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 768 | spin_lock_bh(&seq->lock); |
| 769 | list_del_init(&s->nameseq_list); |
| 770 | spin_unlock_bh(&seq->lock); |
| 771 | if ((seq->first_free == 0) && list_empty(&seq->subscriptions)) { |
| 772 | hlist_del_init(&seq->ns_list); |
| 773 | kfree(seq->sseqs); |
| 774 | kfree(seq); |
| 775 | } |
| 776 | } |
| 777 | write_unlock_bh(&tipc_nametbl_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 778 | } |
| 779 | |
| 780 | |
| 781 | /** |
| 782 | * subseq_list: print specified sub-sequence contents into the given buffer |
| 783 | */ |
| 784 | |
| 785 | static void subseq_list(struct sub_seq *sseq, struct print_buf *buf, u32 depth, |
| 786 | u32 index) |
| 787 | { |
| 788 | char portIdStr[27]; |
Allan Stephens | c2de581 | 2010-08-17 11:00:14 +0000 | [diff] [blame] | 789 | const char *scope_str[] = {"", " zone", " cluster", " node"}; |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 790 | struct publication *publ; |
| 791 | struct name_info *info; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 792 | |
| 793 | tipc_printf(buf, "%-10u %-10u ", sseq->lower, sseq->upper); |
| 794 | |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 795 | if (depth == 2) { |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 796 | tipc_printf(buf, "\n"); |
| 797 | return; |
| 798 | } |
| 799 | |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 800 | info = sseq->info; |
| 801 | |
| 802 | list_for_each_entry(publ, &info->zone_list, zone_list) { |
Allan Stephens | 0e65967 | 2010-12-31 18:59:32 +0000 | [diff] [blame] | 803 | sprintf(portIdStr, "<%u.%u.%u:%u>", |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 804 | tipc_zone(publ->node), tipc_cluster(publ->node), |
| 805 | tipc_node(publ->node), publ->ref); |
| 806 | tipc_printf(buf, "%-26s ", portIdStr); |
| 807 | if (depth > 3) { |
Allan Stephens | c2de581 | 2010-08-17 11:00:14 +0000 | [diff] [blame] | 808 | tipc_printf(buf, "%-10u %s", publ->key, |
| 809 | scope_str[publ->scope]); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 810 | } |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 811 | if (!list_is_last(&publ->zone_list, &info->zone_list)) |
| 812 | tipc_printf(buf, "\n%33s", " "); |
| 813 | }; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 814 | |
| 815 | tipc_printf(buf, "\n"); |
| 816 | } |
| 817 | |
| 818 | /** |
| 819 | * nameseq_list: print specified name sequence contents into the given buffer |
| 820 | */ |
| 821 | |
| 822 | static void nameseq_list(struct name_seq *seq, struct print_buf *buf, u32 depth, |
| 823 | u32 type, u32 lowbound, u32 upbound, u32 index) |
| 824 | { |
| 825 | struct sub_seq *sseq; |
| 826 | char typearea[11]; |
| 827 | |
Allan Stephens | 0f15d36 | 2008-06-04 17:37:59 -0700 | [diff] [blame] | 828 | if (seq->first_free == 0) |
| 829 | return; |
| 830 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 831 | sprintf(typearea, "%-10u", seq->type); |
| 832 | |
| 833 | if (depth == 1) { |
| 834 | tipc_printf(buf, "%s\n", typearea); |
| 835 | return; |
| 836 | } |
| 837 | |
| 838 | for (sseq = seq->sseqs; sseq != &seq->sseqs[seq->first_free]; sseq++) { |
| 839 | if ((lowbound <= sseq->upper) && (upbound >= sseq->lower)) { |
| 840 | tipc_printf(buf, "%s ", typearea); |
Allan Stephens | 307fdf5 | 2008-06-04 17:38:22 -0700 | [diff] [blame] | 841 | spin_lock_bh(&seq->lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 842 | subseq_list(sseq, buf, depth, index); |
Allan Stephens | 307fdf5 | 2008-06-04 17:38:22 -0700 | [diff] [blame] | 843 | spin_unlock_bh(&seq->lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 844 | sprintf(typearea, "%10s", " "); |
| 845 | } |
| 846 | } |
| 847 | } |
| 848 | |
| 849 | /** |
| 850 | * nametbl_header - print name table header into the given buffer |
| 851 | */ |
| 852 | |
| 853 | static void nametbl_header(struct print_buf *buf, u32 depth) |
| 854 | { |
Allan Stephens | c2de581 | 2010-08-17 11:00:14 +0000 | [diff] [blame] | 855 | const char *header[] = { |
| 856 | "Type ", |
| 857 | "Lower Upper ", |
| 858 | "Port Identity ", |
| 859 | "Publication Scope" |
| 860 | }; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 861 | |
Allan Stephens | c2de581 | 2010-08-17 11:00:14 +0000 | [diff] [blame] | 862 | int i; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 863 | |
Allan Stephens | c2de581 | 2010-08-17 11:00:14 +0000 | [diff] [blame] | 864 | if (depth > 4) |
| 865 | depth = 4; |
| 866 | for (i = 0; i < depth; i++) |
| 867 | tipc_printf(buf, header[i]); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 868 | tipc_printf(buf, "\n"); |
| 869 | } |
| 870 | |
| 871 | /** |
| 872 | * nametbl_list - print specified name table contents into the given buffer |
| 873 | */ |
| 874 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 875 | static void nametbl_list(struct print_buf *buf, u32 depth_info, |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 876 | u32 type, u32 lowbound, u32 upbound) |
| 877 | { |
| 878 | struct hlist_head *seq_head; |
| 879 | struct hlist_node *seq_node; |
| 880 | struct name_seq *seq; |
| 881 | int all_types; |
| 882 | u32 depth; |
| 883 | u32 i; |
| 884 | |
| 885 | all_types = (depth_info & TIPC_NTQ_ALLTYPES); |
| 886 | depth = (depth_info & ~TIPC_NTQ_ALLTYPES); |
| 887 | |
| 888 | if (depth == 0) |
| 889 | return; |
| 890 | |
| 891 | if (all_types) { |
| 892 | /* display all entries in name table to specified depth */ |
| 893 | nametbl_header(buf, depth); |
| 894 | lowbound = 0; |
| 895 | upbound = ~0; |
| 896 | for (i = 0; i < tipc_nametbl_size; i++) { |
| 897 | seq_head = &table.types[i]; |
| 898 | hlist_for_each_entry(seq, seq_node, seq_head, ns_list) { |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 899 | nameseq_list(seq, buf, depth, seq->type, |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 900 | lowbound, upbound, i); |
| 901 | } |
| 902 | } |
| 903 | } else { |
| 904 | /* display only the sequence that matches the specified type */ |
| 905 | if (upbound < lowbound) { |
| 906 | tipc_printf(buf, "invalid name sequence specified\n"); |
| 907 | return; |
| 908 | } |
| 909 | nametbl_header(buf, depth); |
| 910 | i = hash(type); |
| 911 | seq_head = &table.types[i]; |
| 912 | hlist_for_each_entry(seq, seq_node, seq_head, ns_list) { |
| 913 | if (seq->type == type) { |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 914 | nameseq_list(seq, buf, depth, type, |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 915 | lowbound, upbound, i); |
| 916 | break; |
| 917 | } |
| 918 | } |
| 919 | } |
| 920 | } |
| 921 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 922 | #define MAX_NAME_TBL_QUERY 32768 |
| 923 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 924 | struct sk_buff *tipc_nametbl_get(const void *req_tlv_area, int req_tlv_space) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 925 | { |
| 926 | struct sk_buff *buf; |
| 927 | struct tipc_name_table_query *argv; |
| 928 | struct tlv_desc *rep_tlv; |
| 929 | struct print_buf b; |
| 930 | int str_len; |
| 931 | |
| 932 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_NAME_TBL_QUERY)) |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 933 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 934 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 935 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_NAME_TBL_QUERY)); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 936 | if (!buf) |
| 937 | return NULL; |
| 938 | |
| 939 | rep_tlv = (struct tlv_desc *)buf->data; |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 940 | tipc_printbuf_init(&b, TLV_DATA(rep_tlv), MAX_NAME_TBL_QUERY); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 941 | argv = (struct tipc_name_table_query *)TLV_DATA(req_tlv_area); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 942 | read_lock_bh(&tipc_nametbl_lock); |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 943 | nametbl_list(&b, ntohl(argv->depth), ntohl(argv->type), |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 944 | ntohl(argv->lowbound), ntohl(argv->upbound)); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 945 | read_unlock_bh(&tipc_nametbl_lock); |
| 946 | str_len = tipc_printbuf_validate(&b); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 947 | |
| 948 | skb_put(buf, TLV_SPACE(str_len)); |
| 949 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); |
| 950 | |
| 951 | return buf; |
| 952 | } |
| 953 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 954 | int tipc_nametbl_init(void) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 955 | { |
Allan Stephens | 4e3e6dc | 2008-05-12 15:41:53 -0700 | [diff] [blame] | 956 | table.types = kcalloc(tipc_nametbl_size, sizeof(struct hlist_head), |
| 957 | GFP_ATOMIC); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 958 | if (!table.types) |
| 959 | return -ENOMEM; |
| 960 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 961 | table.local_publ_count = 0; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 962 | return 0; |
| 963 | } |
| 964 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 965 | void tipc_nametbl_stop(void) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 966 | { |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 967 | u32 i; |
| 968 | |
| 969 | if (!table.types) |
| 970 | return; |
| 971 | |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 972 | /* Verify name table is empty, then release it */ |
| 973 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 974 | write_lock_bh(&tipc_nametbl_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 975 | for (i = 0; i < tipc_nametbl_size; i++) { |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 976 | if (!hlist_empty(&table.types[i])) |
| 977 | err("tipc_nametbl_stop(): hash chain %u is non-null\n", i); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 978 | } |
| 979 | kfree(table.types); |
| 980 | table.types = NULL; |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 981 | write_unlock_bh(&tipc_nametbl_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 982 | } |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 983 | |