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" |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 42 | |
Ying Xue | f046e7d | 2012-08-16 12:09:11 +0000 | [diff] [blame] | 43 | #define TIPC_NAMETBL_SIZE 1024 /* must be a power of 2 */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 44 | |
| 45 | /** |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 46 | * struct name_info - name sequence publication info |
Allan Stephens | 968edbe | 2008-07-14 22:45:33 -0700 | [diff] [blame] | 47 | * @node_list: circular list of publications made by own node |
| 48 | * @cluster_list: circular list of publications made by own cluster |
| 49 | * @zone_list: circular list of publications made by own zone |
| 50 | * @node_list_size: number of entries in "node_list" |
| 51 | * @cluster_list_size: number of entries in "cluster_list" |
| 52 | * @zone_list_size: number of entries in "zone_list" |
| 53 | * |
| 54 | * Note: The zone list always contains at least one entry, since all |
| 55 | * publications of the associated name sequence belong to it. |
| 56 | * (The cluster and node lists may be empty.) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 57 | */ |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 58 | struct name_info { |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 59 | struct list_head node_list; |
| 60 | struct list_head cluster_list; |
| 61 | struct list_head zone_list; |
Allan Stephens | 968edbe | 2008-07-14 22:45:33 -0700 | [diff] [blame] | 62 | u32 node_list_size; |
| 63 | u32 cluster_list_size; |
| 64 | u32 zone_list_size; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 65 | }; |
| 66 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 67 | /** |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 68 | * struct sub_seq - container for all published instances of a name sequence |
| 69 | * @lower: name sequence lower bound |
| 70 | * @upper: name sequence upper bound |
| 71 | * @info: pointer to name sequence publication info |
| 72 | */ |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 73 | struct sub_seq { |
| 74 | u32 lower; |
| 75 | u32 upper; |
| 76 | struct name_info *info; |
| 77 | }; |
| 78 | |
| 79 | /** |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 80 | * struct name_seq - container for all published instances of a name type |
| 81 | * @type: 32 bit 'type' value for name sequence |
| 82 | * @sseq: pointer to dynamically-sized array of sub-sequences of this 'type'; |
| 83 | * sub-sequences are sorted in ascending order |
| 84 | * @alloc: number of sub-sequences currently in array |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 85 | * @first_free: array index of first unused sub-sequence entry |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 86 | * @ns_list: links to adjacent name sequences in hash chain |
| 87 | * @subscriptions: list of subscriptions for this 'type' |
Allan Stephens | 307fdf5 | 2008-06-04 17:38:22 -0700 | [diff] [blame] | 88 | * @lock: spinlock controlling access to publication lists of all sub-sequences |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 89 | */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 90 | struct name_seq { |
| 91 | u32 type; |
| 92 | struct sub_seq *sseqs; |
| 93 | u32 alloc; |
| 94 | u32 first_free; |
| 95 | struct hlist_node ns_list; |
| 96 | struct list_head subscriptions; |
| 97 | spinlock_t lock; |
| 98 | }; |
| 99 | |
| 100 | /** |
| 101 | * struct name_table - table containing all existing port name publications |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 102 | * @types: pointer to fixed-sized array of name sequence lists, |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 103 | * accessed via hashing on 'type'; name sequence lists are *not* sorted |
| 104 | * @local_publ_count: number of publications issued by this node |
| 105 | */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 106 | struct name_table { |
| 107 | struct hlist_head *types; |
| 108 | u32 local_publ_count; |
| 109 | }; |
| 110 | |
Allan Stephens | e3ec9c7 | 2010-12-31 18:59:34 +0000 | [diff] [blame] | 111 | static struct name_table table; |
Ingo Molnar | 34af946 | 2006-06-27 02:53:55 -0700 | [diff] [blame] | 112 | DEFINE_RWLOCK(tipc_nametbl_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 113 | |
Sam Ravnborg | 05790c6 | 2006-03-20 22:37:04 -0800 | [diff] [blame] | 114 | static int hash(int x) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 115 | { |
Ying Xue | f046e7d | 2012-08-16 12:09:11 +0000 | [diff] [blame] | 116 | return x & (TIPC_NAMETBL_SIZE - 1); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 117 | } |
| 118 | |
| 119 | /** |
| 120 | * publ_create - create a publication structure |
| 121 | */ |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 122 | static struct publication *publ_create(u32 type, u32 lower, u32 upper, |
| 123 | u32 scope, u32 node, u32 port_ref, |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 124 | u32 key) |
| 125 | { |
Panagiotis Issaris | 0da974f | 2006-07-21 14:51:30 -0700 | [diff] [blame] | 126 | struct publication *publ = kzalloc(sizeof(*publ), GFP_ATOMIC); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 127 | if (publ == NULL) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 128 | pr_warn("Publication creation failure, no memory\n"); |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 129 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 130 | } |
| 131 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 132 | publ->type = type; |
| 133 | publ->lower = lower; |
| 134 | publ->upper = upper; |
| 135 | publ->scope = scope; |
| 136 | publ->node = node; |
| 137 | publ->ref = port_ref; |
| 138 | publ->key = key; |
| 139 | INIT_LIST_HEAD(&publ->local_list); |
| 140 | INIT_LIST_HEAD(&publ->pport_list); |
| 141 | INIT_LIST_HEAD(&publ->subscr.nodesub_list); |
| 142 | return publ; |
| 143 | } |
| 144 | |
| 145 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 146 | * tipc_subseq_alloc - allocate a specified number of sub-sequence structures |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 147 | */ |
Adrian Bunk | 988f088 | 2006-03-20 22:37:52 -0800 | [diff] [blame] | 148 | static struct sub_seq *tipc_subseq_alloc(u32 cnt) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 149 | { |
wangweidong | 0cee6bb | 2013-12-12 09:36:39 +0800 | [diff] [blame] | 150 | return kcalloc(cnt, sizeof(struct sub_seq), GFP_ATOMIC); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 151 | } |
| 152 | |
| 153 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 154 | * tipc_nameseq_create - create a name sequence structure for the specified 'type' |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 155 | * |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 156 | * Allocates a single sub-sequence structure and sets it to all 0's. |
| 157 | */ |
Adrian Bunk | 988f088 | 2006-03-20 22:37:52 -0800 | [diff] [blame] | 158 | 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] | 159 | { |
Panagiotis Issaris | 0da974f | 2006-07-21 14:51:30 -0700 | [diff] [blame] | 160 | struct name_seq *nseq = kzalloc(sizeof(*nseq), GFP_ATOMIC); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 161 | struct sub_seq *sseq = tipc_subseq_alloc(1); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 162 | |
| 163 | if (!nseq || !sseq) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 164 | pr_warn("Name sequence creation failed, no memory\n"); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 165 | kfree(nseq); |
| 166 | kfree(sseq); |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 167 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 168 | } |
| 169 | |
Ingo Molnar | 34af946 | 2006-06-27 02:53:55 -0700 | [diff] [blame] | 170 | spin_lock_init(&nseq->lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 171 | nseq->type = type; |
| 172 | nseq->sseqs = sseq; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 173 | nseq->alloc = 1; |
| 174 | INIT_HLIST_NODE(&nseq->ns_list); |
| 175 | INIT_LIST_HEAD(&nseq->subscriptions); |
| 176 | hlist_add_head(&nseq->ns_list, seq_head); |
| 177 | return nseq; |
| 178 | } |
| 179 | |
Allan Stephens | f7fb9d2 | 2012-04-26 17:53:03 -0400 | [diff] [blame] | 180 | /* |
| 181 | * nameseq_delete_empty - deletes a name sequence structure if now unused |
| 182 | */ |
| 183 | static void nameseq_delete_empty(struct name_seq *seq) |
| 184 | { |
| 185 | if (!seq->first_free && list_empty(&seq->subscriptions)) { |
| 186 | hlist_del_init(&seq->ns_list); |
| 187 | kfree(seq->sseqs); |
| 188 | kfree(seq); |
| 189 | } |
| 190 | } |
| 191 | |
Ben Hutchings | 2c53040 | 2012-07-10 10:55:09 +0000 | [diff] [blame] | 192 | /** |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 193 | * nameseq_find_subseq - find sub-sequence (if any) matching a name instance |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 194 | * |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 195 | * Very time-critical, so binary searches through sub-sequence array. |
| 196 | */ |
Sam Ravnborg | 05790c6 | 2006-03-20 22:37:04 -0800 | [diff] [blame] | 197 | static struct sub_seq *nameseq_find_subseq(struct name_seq *nseq, |
| 198 | u32 instance) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 199 | { |
| 200 | struct sub_seq *sseqs = nseq->sseqs; |
| 201 | int low = 0; |
| 202 | int high = nseq->first_free - 1; |
| 203 | int mid; |
| 204 | |
| 205 | while (low <= high) { |
| 206 | mid = (low + high) / 2; |
| 207 | if (instance < sseqs[mid].lower) |
| 208 | high = mid - 1; |
| 209 | else if (instance > sseqs[mid].upper) |
| 210 | low = mid + 1; |
| 211 | else |
| 212 | return &sseqs[mid]; |
| 213 | } |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 214 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 215 | } |
| 216 | |
| 217 | /** |
| 218 | * nameseq_locate_subseq - determine position of name instance in sub-sequence |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 219 | * |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 220 | * Returns index in sub-sequence array of the entry that contains the specified |
| 221 | * instance value; if no entry contains that value, returns the position |
| 222 | * where a new entry for it would be inserted in the array. |
| 223 | * |
| 224 | * Note: Similar to binary search code for locating a sub-sequence. |
| 225 | */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 226 | static u32 nameseq_locate_subseq(struct name_seq *nseq, u32 instance) |
| 227 | { |
| 228 | struct sub_seq *sseqs = nseq->sseqs; |
| 229 | int low = 0; |
| 230 | int high = nseq->first_free - 1; |
| 231 | int mid; |
| 232 | |
| 233 | while (low <= high) { |
| 234 | mid = (low + high) / 2; |
| 235 | if (instance < sseqs[mid].lower) |
| 236 | high = mid - 1; |
| 237 | else if (instance > sseqs[mid].upper) |
| 238 | low = mid + 1; |
| 239 | else |
| 240 | return mid; |
| 241 | } |
| 242 | return low; |
| 243 | } |
| 244 | |
| 245 | /** |
Paul Gortmaker | 617d3c7 | 2012-04-30 15:29:02 -0400 | [diff] [blame] | 246 | * tipc_nameseq_insert_publ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 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 */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 263 | if ((sseq->lower != lower) || (sseq->upper != upper)) { |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 264 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 265 | } |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 266 | |
| 267 | info = sseq->info; |
Allan Stephens | f80c24d | 2011-11-03 11:12:01 -0400 | [diff] [blame] | 268 | |
| 269 | /* Check if an identical publication already exists */ |
| 270 | list_for_each_entry(publ, &info->zone_list, zone_list) { |
| 271 | if ((publ->ref == port) && (publ->key == key) && |
| 272 | (!publ->node || (publ->node == node))) |
| 273 | return NULL; |
| 274 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 275 | } else { |
| 276 | u32 inspos; |
| 277 | struct sub_seq *freesseq; |
| 278 | |
| 279 | /* Find where lower end should be inserted */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 280 | inspos = nameseq_locate_subseq(nseq, lower); |
| 281 | |
| 282 | /* Fail if upper end overlaps into an existing entry */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 283 | if ((inspos < nseq->first_free) && |
| 284 | (upper >= nseq->sseqs[inspos].lower)) { |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 285 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 286 | } |
| 287 | |
| 288 | /* Ensure there is space for new sub-sequence */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 289 | if (nseq->first_free == nseq->alloc) { |
Allan Stephens | 9ab230f | 2006-06-25 23:37:24 -0700 | [diff] [blame] | 290 | struct sub_seq *sseqs = tipc_subseq_alloc(nseq->alloc * 2); |
| 291 | |
| 292 | if (!sseqs) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 293 | pr_warn("Cannot publish {%u,%u,%u}, no memory\n", |
| 294 | type, lower, upper); |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 295 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 296 | } |
Allan Stephens | 9ab230f | 2006-06-25 23:37:24 -0700 | [diff] [blame] | 297 | memcpy(sseqs, nseq->sseqs, |
| 298 | nseq->alloc * sizeof(struct sub_seq)); |
| 299 | kfree(nseq->sseqs); |
| 300 | nseq->sseqs = sseqs; |
| 301 | nseq->alloc *= 2; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 302 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 303 | |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 304 | info = kzalloc(sizeof(*info), GFP_ATOMIC); |
| 305 | if (!info) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 306 | pr_warn("Cannot publish {%u,%u,%u}, no memory\n", |
| 307 | type, lower, upper); |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 308 | return NULL; |
| 309 | } |
| 310 | |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 311 | INIT_LIST_HEAD(&info->node_list); |
| 312 | INIT_LIST_HEAD(&info->cluster_list); |
| 313 | INIT_LIST_HEAD(&info->zone_list); |
| 314 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 315 | /* Insert new sub-sequence */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 316 | sseq = &nseq->sseqs[inspos]; |
| 317 | freesseq = &nseq->sseqs[nseq->first_free]; |
Allan Stephens | 0e65967 | 2010-12-31 18:59:32 +0000 | [diff] [blame] | 318 | memmove(sseq + 1, sseq, (freesseq - sseq) * sizeof(*sseq)); |
| 319 | memset(sseq, 0, sizeof(*sseq)); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 320 | nseq->first_free++; |
| 321 | sseq->lower = lower; |
| 322 | sseq->upper = upper; |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 323 | sseq->info = info; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 324 | created_subseq = 1; |
| 325 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 326 | |
Paul Gortmaker | 617d3c7 | 2012-04-30 15:29:02 -0400 | [diff] [blame] | 327 | /* Insert a publication */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 328 | publ = publ_create(type, lower, upper, scope, node, port, key); |
| 329 | if (!publ) |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 330 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 331 | |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 332 | list_add(&publ->zone_list, &info->zone_list); |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 333 | info->zone_list_size++; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 334 | |
Allan Stephens | d4f5c12 | 2012-04-17 18:16:34 -0400 | [diff] [blame] | 335 | if (in_own_cluster(node)) { |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 336 | list_add(&publ->cluster_list, &info->cluster_list); |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 337 | info->cluster_list_size++; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 338 | } |
| 339 | |
Allan Stephens | d4f5c12 | 2012-04-17 18:16:34 -0400 | [diff] [blame] | 340 | if (in_own_node(node)) { |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 341 | list_add(&publ->node_list, &info->node_list); |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 342 | info->node_list_size++; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 343 | } |
| 344 | |
Paul Gortmaker | 617d3c7 | 2012-04-30 15:29:02 -0400 | [diff] [blame] | 345 | /* Any subscriptions waiting for notification? */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 346 | list_for_each_entry_safe(s, st, &nseq->subscriptions, nameseq_list) { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 347 | tipc_subscr_report_overlap(s, |
| 348 | publ->lower, |
| 349 | publ->upper, |
| 350 | TIPC_PUBLISHED, |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 351 | publ->ref, |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 352 | publ->node, |
| 353 | created_subseq); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 354 | } |
| 355 | return publ; |
| 356 | } |
| 357 | |
| 358 | /** |
Paul Gortmaker | 617d3c7 | 2012-04-30 15:29:02 -0400 | [diff] [blame] | 359 | * tipc_nameseq_remove_publ |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 360 | * |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 361 | * NOTE: There may be cases where TIPC is asked to remove a publication |
| 362 | * that is not in the name table. For example, if another node issues a |
| 363 | * publication for a name sequence that overlaps an existing name sequence |
| 364 | * the publication will not be recorded, which means the publication won't |
| 365 | * be found when the name sequence is later withdrawn by that node. |
| 366 | * A failed withdraw request simply returns a failure indication and lets the |
| 367 | * caller issue any error or warning messages associated with such a problem. |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 368 | */ |
Adrian Bunk | 988f088 | 2006-03-20 22:37:52 -0800 | [diff] [blame] | 369 | static struct publication *tipc_nameseq_remove_publ(struct name_seq *nseq, u32 inst, |
| 370 | u32 node, u32 ref, u32 key) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 371 | { |
| 372 | struct publication *publ; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 373 | struct sub_seq *sseq = nameseq_find_subseq(nseq, inst); |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 374 | struct name_info *info; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 375 | struct sub_seq *free; |
Paul Gortmaker | fead390 | 2011-12-29 20:43:44 -0500 | [diff] [blame] | 376 | struct tipc_subscription *s, *st; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 377 | int removed_subseq = 0; |
| 378 | |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 379 | if (!sseq) |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 380 | return NULL; |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 381 | |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 382 | info = sseq->info; |
| 383 | |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 384 | /* Locate publication, if it exists */ |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 385 | list_for_each_entry(publ, &info->zone_list, zone_list) { |
| 386 | if ((publ->key == key) && (publ->ref == ref) && |
| 387 | (!publ->node || (publ->node == node))) |
| 388 | goto found; |
| 389 | } |
| 390 | return NULL; |
| 391 | |
| 392 | found: |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 393 | /* Remove publication from zone scope list */ |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 394 | list_del(&publ->zone_list); |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 395 | info->zone_list_size--; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 396 | |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 397 | /* Remove publication from cluster scope list, if present */ |
Allan Stephens | d4f5c12 | 2012-04-17 18:16:34 -0400 | [diff] [blame] | 398 | if (in_own_cluster(node)) { |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 399 | list_del(&publ->cluster_list); |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 400 | info->cluster_list_size--; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 401 | } |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 402 | |
| 403 | /* Remove publication from node scope list, if present */ |
Allan Stephens | d4f5c12 | 2012-04-17 18:16:34 -0400 | [diff] [blame] | 404 | if (in_own_node(node)) { |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 405 | list_del(&publ->node_list); |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 406 | info->node_list_size--; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 407 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 408 | |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 409 | /* Contract subseq list if no more publications for that subseq */ |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 410 | if (list_empty(&info->zone_list)) { |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 411 | kfree(info); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 412 | free = &nseq->sseqs[nseq->first_free--]; |
Allan Stephens | 0e65967 | 2010-12-31 18:59:32 +0000 | [diff] [blame] | 413 | memmove(sseq, sseq + 1, (free - (sseq + 1)) * sizeof(*sseq)); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 414 | removed_subseq = 1; |
| 415 | } |
| 416 | |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 417 | /* Notify any waiting subscriptions */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 418 | list_for_each_entry_safe(s, st, &nseq->subscriptions, nameseq_list) { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 419 | tipc_subscr_report_overlap(s, |
| 420 | publ->lower, |
| 421 | publ->upper, |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 422 | TIPC_WITHDRAWN, |
| 423 | publ->ref, |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 424 | publ->node, |
| 425 | removed_subseq); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 426 | } |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 427 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 428 | return publ; |
| 429 | } |
| 430 | |
| 431 | /** |
Ben Hutchings | 2c53040 | 2012-07-10 10:55:09 +0000 | [diff] [blame] | 432 | * tipc_nameseq_subscribe - attach a subscription, and issue |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 433 | * the prescribed number of events if there is any sub- |
| 434 | * sequence overlapping with the requested sequence |
| 435 | */ |
Paul Gortmaker | fead390 | 2011-12-29 20:43:44 -0500 | [diff] [blame] | 436 | static void tipc_nameseq_subscribe(struct name_seq *nseq, |
Paul Gortmaker | ae8509c | 2013-06-17 10:54:47 -0400 | [diff] [blame] | 437 | struct tipc_subscription *s) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 438 | { |
| 439 | struct sub_seq *sseq = nseq->sseqs; |
| 440 | |
| 441 | list_add(&s->nameseq_list, &nseq->subscriptions); |
| 442 | |
| 443 | if (!sseq) |
| 444 | return; |
| 445 | |
| 446 | while (sseq != &nseq->sseqs[nseq->first_free]) { |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 447 | if (tipc_subscr_overlap(s, sseq->lower, sseq->upper)) { |
| 448 | struct publication *crs; |
| 449 | struct name_info *info = sseq->info; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 450 | int must_report = 1; |
| 451 | |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 452 | list_for_each_entry(crs, &info->zone_list, zone_list) { |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 453 | tipc_subscr_report_overlap(s, |
| 454 | sseq->lower, |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 455 | sseq->upper, |
| 456 | TIPC_PUBLISHED, |
| 457 | crs->ref, |
| 458 | crs->node, |
| 459 | must_report); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 460 | must_report = 0; |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 461 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 462 | } |
| 463 | sseq++; |
| 464 | } |
| 465 | } |
| 466 | |
| 467 | static struct name_seq *nametbl_find_seq(u32 type) |
| 468 | { |
| 469 | struct hlist_head *seq_head; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 470 | struct name_seq *ns; |
| 471 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 472 | seq_head = &table.types[hash(type)]; |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 473 | hlist_for_each_entry(ns, seq_head, ns_list) { |
Allan Stephens | b29f142 | 2010-12-31 18:59:25 +0000 | [diff] [blame] | 474 | if (ns->type == type) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 475 | return ns; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 476 | } |
| 477 | |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 478 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 479 | }; |
| 480 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 481 | struct publication *tipc_nametbl_insert_publ(u32 type, u32 lower, u32 upper, |
| 482 | u32 scope, u32 node, u32 port, u32 key) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 483 | { |
| 484 | struct name_seq *seq = nametbl_find_seq(type); |
| 485 | |
Allan Stephens | 8f17789 | 2012-04-26 17:57:17 -0400 | [diff] [blame] | 486 | if ((scope < TIPC_ZONE_SCOPE) || (scope > TIPC_NODE_SCOPE) || |
| 487 | (lower > upper)) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 488 | pr_debug("Failed to publish illegal {%u,%u,%u} with scope %u\n", |
| 489 | type, lower, upper, scope); |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 490 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 491 | } |
| 492 | |
Allan Stephens | b29f142 | 2010-12-31 18:59:25 +0000 | [diff] [blame] | 493 | if (!seq) |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 494 | seq = tipc_nameseq_create(type, &table.types[hash(type)]); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 495 | if (!seq) |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 496 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 497 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 498 | return tipc_nameseq_insert_publ(seq, type, lower, upper, |
| 499 | scope, node, port, key); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 500 | } |
| 501 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 502 | struct publication *tipc_nametbl_remove_publ(u32 type, u32 lower, |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 503 | u32 node, u32 ref, u32 key) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 504 | { |
| 505 | struct publication *publ; |
| 506 | struct name_seq *seq = nametbl_find_seq(type); |
| 507 | |
| 508 | if (!seq) |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 509 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 510 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 511 | publ = tipc_nameseq_remove_publ(seq, lower, node, ref, key); |
Allan Stephens | f7fb9d2 | 2012-04-26 17:53:03 -0400 | [diff] [blame] | 512 | nameseq_delete_empty(seq); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 513 | return publ; |
| 514 | } |
| 515 | |
Ben Hutchings | 2c53040 | 2012-07-10 10:55:09 +0000 | [diff] [blame] | 516 | /** |
Allan Stephens | bc9f814 | 2011-11-07 17:00:54 -0500 | [diff] [blame] | 517 | * tipc_nametbl_translate - perform name translation |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 518 | * |
Allan Stephens | bc9f814 | 2011-11-07 17:00:54 -0500 | [diff] [blame] | 519 | * On entry, 'destnode' is the search domain used during translation. |
| 520 | * |
| 521 | * On exit: |
| 522 | * - if name translation is deferred to another node/cluster/zone, |
| 523 | * leaves 'destnode' unchanged (will be non-zero) and returns 0 |
| 524 | * - if name translation is attempted and succeeds, sets 'destnode' |
| 525 | * to publishing node and returns port reference (will be non-zero) |
| 526 | * - if name translation is attempted and fails, sets 'destnode' to 0 |
| 527 | * and returns 0 |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 528 | */ |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 529 | u32 tipc_nametbl_translate(u32 type, u32 instance, u32 *destnode) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 530 | { |
| 531 | struct sub_seq *sseq; |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 532 | struct name_info *info; |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 533 | struct publication *publ; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 534 | struct name_seq *seq; |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 535 | u32 ref = 0; |
Allan Stephens | bc9f814 | 2011-11-07 17:00:54 -0500 | [diff] [blame] | 536 | u32 node = 0; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 537 | |
Allan Stephens | c68ca7b | 2010-05-11 14:30:12 +0000 | [diff] [blame] | 538 | if (!tipc_in_scope(*destnode, tipc_own_addr)) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 539 | return 0; |
| 540 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 541 | read_lock_bh(&tipc_nametbl_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 542 | seq = nametbl_find_seq(type); |
| 543 | if (unlikely(!seq)) |
| 544 | goto not_found; |
| 545 | sseq = nameseq_find_subseq(seq, instance); |
| 546 | if (unlikely(!sseq)) |
| 547 | goto not_found; |
| 548 | spin_lock_bh(&seq->lock); |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 549 | info = sseq->info; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 550 | |
Paul Gortmaker | 617d3c7 | 2012-04-30 15:29:02 -0400 | [diff] [blame] | 551 | /* Closest-First Algorithm */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 552 | if (likely(!*destnode)) { |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 553 | if (!list_empty(&info->node_list)) { |
| 554 | publ = list_first_entry(&info->node_list, |
| 555 | struct publication, |
| 556 | node_list); |
| 557 | list_move_tail(&publ->node_list, |
| 558 | &info->node_list); |
| 559 | } else if (!list_empty(&info->cluster_list)) { |
| 560 | publ = list_first_entry(&info->cluster_list, |
| 561 | struct publication, |
| 562 | cluster_list); |
| 563 | list_move_tail(&publ->cluster_list, |
| 564 | &info->cluster_list); |
Allan Stephens | 8af4638 | 2011-05-30 11:27:50 -0400 | [diff] [blame] | 565 | } else { |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 566 | publ = list_first_entry(&info->zone_list, |
| 567 | struct publication, |
| 568 | zone_list); |
| 569 | list_move_tail(&publ->zone_list, |
| 570 | &info->zone_list); |
Allan Stephens | 8af4638 | 2011-05-30 11:27:50 -0400 | [diff] [blame] | 571 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 572 | } |
| 573 | |
Paul Gortmaker | 617d3c7 | 2012-04-30 15:29:02 -0400 | [diff] [blame] | 574 | /* Round-Robin Algorithm */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 575 | else if (*destnode == tipc_own_addr) { |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 576 | if (list_empty(&info->node_list)) |
| 577 | goto no_match; |
| 578 | publ = list_first_entry(&info->node_list, struct publication, |
| 579 | node_list); |
| 580 | list_move_tail(&publ->node_list, &info->node_list); |
Allan Stephens | 336ebf5 | 2012-04-17 18:02:01 -0400 | [diff] [blame] | 581 | } else if (in_own_cluster_exact(*destnode)) { |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 582 | if (list_empty(&info->cluster_list)) |
| 583 | goto no_match; |
| 584 | publ = list_first_entry(&info->cluster_list, struct publication, |
| 585 | cluster_list); |
| 586 | list_move_tail(&publ->cluster_list, &info->cluster_list); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 587 | } else { |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 588 | publ = list_first_entry(&info->zone_list, struct publication, |
| 589 | zone_list); |
| 590 | list_move_tail(&publ->zone_list, &info->zone_list); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 591 | } |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 592 | |
| 593 | ref = publ->ref; |
Allan Stephens | bc9f814 | 2011-11-07 17:00:54 -0500 | [diff] [blame] | 594 | node = publ->node; |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 595 | no_match: |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 596 | spin_unlock_bh(&seq->lock); |
| 597 | not_found: |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 598 | read_unlock_bh(&tipc_nametbl_lock); |
Allan Stephens | bc9f814 | 2011-11-07 17:00:54 -0500 | [diff] [blame] | 599 | *destnode = node; |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 600 | return ref; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 601 | } |
| 602 | |
| 603 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 604 | * tipc_nametbl_mc_translate - find multicast destinations |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 605 | * |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 606 | * Creates list of all local ports that overlap the given multicast address; |
| 607 | * also determines if any off-node ports overlap. |
| 608 | * |
| 609 | * Note: Publications with a scope narrower than 'limit' are ignored. |
| 610 | * (i.e. local node-scope publications mustn't receive messages arriving |
| 611 | * from another node, even if the multcast link brought it here) |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 612 | * |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 613 | * Returns non-zero if any off-node ports overlap |
| 614 | */ |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 615 | 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] | 616 | struct tipc_port_list *dports) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 617 | { |
| 618 | struct name_seq *seq; |
| 619 | struct sub_seq *sseq; |
| 620 | struct sub_seq *sseq_stop; |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 621 | struct name_info *info; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 622 | int res = 0; |
| 623 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 624 | read_lock_bh(&tipc_nametbl_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 625 | seq = nametbl_find_seq(type); |
| 626 | if (!seq) |
| 627 | goto exit; |
| 628 | |
| 629 | spin_lock_bh(&seq->lock); |
| 630 | |
| 631 | sseq = seq->sseqs + nameseq_locate_subseq(seq, lower); |
| 632 | sseq_stop = seq->sseqs + seq->first_free; |
| 633 | for (; sseq != sseq_stop; sseq++) { |
| 634 | struct publication *publ; |
| 635 | |
| 636 | if (sseq->lower > upper) |
| 637 | break; |
Allan Stephens | 968edbe | 2008-07-14 22:45:33 -0700 | [diff] [blame] | 638 | |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 639 | info = sseq->info; |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 640 | list_for_each_entry(publ, &info->node_list, node_list) { |
| 641 | if (publ->scope <= limit) |
| 642 | tipc_port_list_add(dports, publ->ref); |
Allan Stephens | 968edbe | 2008-07-14 22:45:33 -0700 | [diff] [blame] | 643 | } |
| 644 | |
Allan Stephens | b52124a | 2011-05-30 09:44:38 -0400 | [diff] [blame] | 645 | if (info->cluster_list_size != info->node_list_size) |
Allan Stephens | 968edbe | 2008-07-14 22:45:33 -0700 | [diff] [blame] | 646 | res = 1; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 647 | } |
| 648 | |
| 649 | spin_unlock_bh(&seq->lock); |
| 650 | exit: |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 651 | read_unlock_bh(&tipc_nametbl_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 652 | return res; |
| 653 | } |
| 654 | |
Allan Stephens | c422f1b | 2011-11-02 15:49:40 -0400 | [diff] [blame] | 655 | /* |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 656 | * tipc_nametbl_publish - add name publication to network name tables |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 657 | */ |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 658 | struct publication *tipc_nametbl_publish(u32 type, u32 lower, u32 upper, |
Paul Gortmaker | ae8509c | 2013-06-17 10:54:47 -0400 | [diff] [blame] | 659 | u32 scope, u32 port_ref, u32 key) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 660 | { |
| 661 | struct publication *publ; |
Ying Xue | eab8c045 | 2014-04-28 18:00:10 +0800 | [diff] [blame] | 662 | struct sk_buff *buf = NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 663 | |
Ying Xue | e6a04b1 | 2012-08-16 12:09:14 +0000 | [diff] [blame] | 664 | if (table.local_publ_count >= TIPC_MAX_PUBLICATIONS) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 665 | pr_warn("Publication failed, local publication limit reached (%u)\n", |
Ying Xue | e6a04b1 | 2012-08-16 12:09:14 +0000 | [diff] [blame] | 666 | TIPC_MAX_PUBLICATIONS); |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 667 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 668 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 669 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 670 | write_lock_bh(&tipc_nametbl_lock); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 671 | publ = tipc_nametbl_insert_publ(type, lower, upper, scope, |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 672 | tipc_own_addr, port_ref, key); |
Allan Stephens | fd6eced | 2011-11-09 14:22:52 -0500 | [diff] [blame] | 673 | if (likely(publ)) { |
| 674 | table.local_publ_count++; |
Ying Xue | eab8c045 | 2014-04-28 18:00:10 +0800 | [diff] [blame] | 675 | buf = tipc_named_publish(publ); |
Erik Hugne | a5325ae | 2014-08-28 09:08:47 +0200 | [diff] [blame] | 676 | /* Any pending external events? */ |
| 677 | tipc_named_process_backlog(); |
Allan Stephens | fd6eced | 2011-11-09 14:22:52 -0500 | [diff] [blame] | 678 | } |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 679 | write_unlock_bh(&tipc_nametbl_lock); |
Ying Xue | eab8c045 | 2014-04-28 18:00:10 +0800 | [diff] [blame] | 680 | |
| 681 | if (buf) |
| 682 | named_cluster_distribute(buf); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 683 | return publ; |
| 684 | } |
| 685 | |
| 686 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 687 | * tipc_nametbl_withdraw - withdraw name publication from network name tables |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 688 | */ |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 689 | int tipc_nametbl_withdraw(u32 type, u32 lower, u32 ref, u32 key) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 690 | { |
| 691 | struct publication *publ; |
Ying Xue | eab8c045 | 2014-04-28 18:00:10 +0800 | [diff] [blame] | 692 | struct sk_buff *buf; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 693 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 694 | write_lock_bh(&tipc_nametbl_lock); |
| 695 | publ = tipc_nametbl_remove_publ(type, lower, tipc_own_addr, ref, key); |
Allan Stephens | f131072 | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 696 | if (likely(publ)) { |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 697 | table.local_publ_count--; |
Ying Xue | eab8c045 | 2014-04-28 18:00:10 +0800 | [diff] [blame] | 698 | buf = tipc_named_withdraw(publ); |
Erik Hugne | a5325ae | 2014-08-28 09:08:47 +0200 | [diff] [blame] | 699 | /* Any pending external events? */ |
| 700 | tipc_named_process_backlog(); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 701 | write_unlock_bh(&tipc_nametbl_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 702 | list_del_init(&publ->pport_list); |
| 703 | kfree(publ); |
Ying Xue | eab8c045 | 2014-04-28 18:00:10 +0800 | [diff] [blame] | 704 | |
| 705 | if (buf) |
| 706 | named_cluster_distribute(buf); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 707 | return 1; |
| 708 | } |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 709 | write_unlock_bh(&tipc_nametbl_lock); |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 710 | pr_err("Unable to remove local publication\n" |
| 711 | "(type=%u, lower=%u, ref=%u, key=%u)\n", |
| 712 | type, lower, ref, key); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 713 | return 0; |
| 714 | } |
| 715 | |
| 716 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 717 | * tipc_nametbl_subscribe - add a subscription object to the name table |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 718 | */ |
Paul Gortmaker | fead390 | 2011-12-29 20:43:44 -0500 | [diff] [blame] | 719 | void tipc_nametbl_subscribe(struct tipc_subscription *s) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 720 | { |
| 721 | u32 type = s->seq.type; |
| 722 | struct name_seq *seq; |
| 723 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 724 | write_lock_bh(&tipc_nametbl_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 725 | seq = nametbl_find_seq(type); |
Allan Stephens | a016892 | 2010-12-31 18:59:35 +0000 | [diff] [blame] | 726 | if (!seq) |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 727 | seq = tipc_nameseq_create(type, &table.types[hash(type)]); |
Allan Stephens | 0e65967 | 2010-12-31 18:59:32 +0000 | [diff] [blame] | 728 | if (seq) { |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 729 | spin_lock_bh(&seq->lock); |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 730 | tipc_nameseq_subscribe(seq, s); |
| 731 | spin_unlock_bh(&seq->lock); |
| 732 | } else { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 733 | pr_warn("Failed to create subscription for {%u,%u,%u}\n", |
| 734 | s->seq.type, s->seq.lower, s->seq.upper); |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 735 | } |
| 736 | write_unlock_bh(&tipc_nametbl_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 737 | } |
| 738 | |
| 739 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 740 | * tipc_nametbl_unsubscribe - remove a subscription object from name table |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 741 | */ |
Paul Gortmaker | fead390 | 2011-12-29 20:43:44 -0500 | [diff] [blame] | 742 | void tipc_nametbl_unsubscribe(struct tipc_subscription *s) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 743 | { |
| 744 | struct name_seq *seq; |
| 745 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 746 | write_lock_bh(&tipc_nametbl_lock); |
| 747 | seq = nametbl_find_seq(s->seq.type); |
Allan Stephens | 0e65967 | 2010-12-31 18:59:32 +0000 | [diff] [blame] | 748 | if (seq != NULL) { |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 749 | spin_lock_bh(&seq->lock); |
| 750 | list_del_init(&s->nameseq_list); |
| 751 | spin_unlock_bh(&seq->lock); |
Allan Stephens | f7fb9d2 | 2012-04-26 17:53:03 -0400 | [diff] [blame] | 752 | nameseq_delete_empty(seq); |
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 | |
| 758 | /** |
Ben Hutchings | 2c53040 | 2012-07-10 10:55:09 +0000 | [diff] [blame] | 759 | * subseq_list - print specified sub-sequence contents into the given buffer |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 760 | */ |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 761 | static int subseq_list(struct sub_seq *sseq, char *buf, int len, u32 depth, |
Paul Gortmaker | ae8509c | 2013-06-17 10:54:47 -0400 | [diff] [blame] | 762 | u32 index) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 763 | { |
| 764 | char portIdStr[27]; |
Allan Stephens | c2de581 | 2010-08-17 11:00:14 +0000 | [diff] [blame] | 765 | const char *scope_str[] = {"", " zone", " cluster", " node"}; |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 766 | struct publication *publ; |
| 767 | struct name_info *info; |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 768 | int ret; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 769 | |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 770 | ret = tipc_snprintf(buf, len, "%-10u %-10u ", sseq->lower, sseq->upper); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 771 | |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 772 | if (depth == 2) { |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 773 | ret += tipc_snprintf(buf - ret, len + ret, "\n"); |
| 774 | return ret; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 775 | } |
| 776 | |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 777 | info = sseq->info; |
| 778 | |
| 779 | list_for_each_entry(publ, &info->zone_list, zone_list) { |
Allan Stephens | 0e65967 | 2010-12-31 18:59:32 +0000 | [diff] [blame] | 780 | sprintf(portIdStr, "<%u.%u.%u:%u>", |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 781 | tipc_zone(publ->node), tipc_cluster(publ->node), |
| 782 | tipc_node(publ->node), publ->ref); |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 783 | ret += tipc_snprintf(buf + ret, len - ret, "%-26s ", portIdStr); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 784 | if (depth > 3) { |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 785 | ret += tipc_snprintf(buf + ret, len - ret, "%-10u %s", |
| 786 | publ->key, scope_str[publ->scope]); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 787 | } |
Allan Stephens | f6f0a4d | 2011-05-30 10:48:48 -0400 | [diff] [blame] | 788 | if (!list_is_last(&publ->zone_list, &info->zone_list)) |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 789 | ret += tipc_snprintf(buf + ret, len - ret, |
| 790 | "\n%33s", " "); |
Peter Senna Tschudin | adccff3 | 2012-09-18 07:10:45 +0000 | [diff] [blame] | 791 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 792 | |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 793 | ret += tipc_snprintf(buf + ret, len - ret, "\n"); |
| 794 | return ret; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 795 | } |
| 796 | |
| 797 | /** |
Ben Hutchings | 2c53040 | 2012-07-10 10:55:09 +0000 | [diff] [blame] | 798 | * nameseq_list - print specified name sequence contents into the given buffer |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 799 | */ |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 800 | static int nameseq_list(struct name_seq *seq, char *buf, int len, u32 depth, |
Paul Gortmaker | ae8509c | 2013-06-17 10:54:47 -0400 | [diff] [blame] | 801 | u32 type, u32 lowbound, u32 upbound, u32 index) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 802 | { |
| 803 | struct sub_seq *sseq; |
| 804 | char typearea[11]; |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 805 | int ret = 0; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 806 | |
Allan Stephens | 0f15d36 | 2008-06-04 17:37:59 -0700 | [diff] [blame] | 807 | if (seq->first_free == 0) |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 808 | return 0; |
Allan Stephens | 0f15d36 | 2008-06-04 17:37:59 -0700 | [diff] [blame] | 809 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 810 | sprintf(typearea, "%-10u", seq->type); |
| 811 | |
| 812 | if (depth == 1) { |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 813 | ret += tipc_snprintf(buf, len, "%s\n", typearea); |
| 814 | return ret; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 815 | } |
| 816 | |
| 817 | for (sseq = seq->sseqs; sseq != &seq->sseqs[seq->first_free]; sseq++) { |
| 818 | if ((lowbound <= sseq->upper) && (upbound >= sseq->lower)) { |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 819 | ret += tipc_snprintf(buf + ret, len - ret, "%s ", |
| 820 | typearea); |
Allan Stephens | 307fdf5 | 2008-06-04 17:38:22 -0700 | [diff] [blame] | 821 | spin_lock_bh(&seq->lock); |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 822 | ret += subseq_list(sseq, buf + ret, len - ret, |
| 823 | depth, index); |
Allan Stephens | 307fdf5 | 2008-06-04 17:38:22 -0700 | [diff] [blame] | 824 | spin_unlock_bh(&seq->lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 825 | sprintf(typearea, "%10s", " "); |
| 826 | } |
| 827 | } |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 828 | return ret; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 829 | } |
| 830 | |
| 831 | /** |
| 832 | * nametbl_header - print name table header into the given buffer |
| 833 | */ |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 834 | static int nametbl_header(char *buf, int len, u32 depth) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 835 | { |
Allan Stephens | c2de581 | 2010-08-17 11:00:14 +0000 | [diff] [blame] | 836 | const char *header[] = { |
| 837 | "Type ", |
| 838 | "Lower Upper ", |
| 839 | "Port Identity ", |
| 840 | "Publication Scope" |
| 841 | }; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 842 | |
Allan Stephens | c2de581 | 2010-08-17 11:00:14 +0000 | [diff] [blame] | 843 | int i; |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 844 | int ret = 0; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 845 | |
Allan Stephens | c2de581 | 2010-08-17 11:00:14 +0000 | [diff] [blame] | 846 | if (depth > 4) |
| 847 | depth = 4; |
| 848 | for (i = 0; i < depth; i++) |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 849 | ret += tipc_snprintf(buf + ret, len - ret, header[i]); |
| 850 | ret += tipc_snprintf(buf + ret, len - ret, "\n"); |
| 851 | return ret; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 852 | } |
| 853 | |
| 854 | /** |
| 855 | * nametbl_list - print specified name table contents into the given buffer |
| 856 | */ |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 857 | static int nametbl_list(char *buf, int len, u32 depth_info, |
Paul Gortmaker | ae8509c | 2013-06-17 10:54:47 -0400 | [diff] [blame] | 858 | u32 type, u32 lowbound, u32 upbound) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 859 | { |
| 860 | struct hlist_head *seq_head; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 861 | struct name_seq *seq; |
| 862 | int all_types; |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 863 | int ret = 0; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 864 | u32 depth; |
| 865 | u32 i; |
| 866 | |
| 867 | all_types = (depth_info & TIPC_NTQ_ALLTYPES); |
| 868 | depth = (depth_info & ~TIPC_NTQ_ALLTYPES); |
| 869 | |
| 870 | if (depth == 0) |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 871 | return 0; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 872 | |
| 873 | if (all_types) { |
| 874 | /* display all entries in name table to specified depth */ |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 875 | ret += nametbl_header(buf, len, depth); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 876 | lowbound = 0; |
| 877 | upbound = ~0; |
Ying Xue | f046e7d | 2012-08-16 12:09:11 +0000 | [diff] [blame] | 878 | for (i = 0; i < TIPC_NAMETBL_SIZE; i++) { |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 879 | seq_head = &table.types[i]; |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 880 | hlist_for_each_entry(seq, seq_head, ns_list) { |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 881 | ret += nameseq_list(seq, buf + ret, len - ret, |
| 882 | depth, seq->type, |
| 883 | lowbound, upbound, i); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 884 | } |
| 885 | } |
| 886 | } else { |
| 887 | /* display only the sequence that matches the specified type */ |
| 888 | if (upbound < lowbound) { |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 889 | ret += tipc_snprintf(buf + ret, len - ret, |
| 890 | "invalid name sequence specified\n"); |
| 891 | return ret; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 892 | } |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 893 | ret += nametbl_header(buf + ret, len - ret, depth); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 894 | i = hash(type); |
| 895 | seq_head = &table.types[i]; |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 896 | hlist_for_each_entry(seq, seq_head, ns_list) { |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 897 | if (seq->type == type) { |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 898 | ret += nameseq_list(seq, buf + ret, len - ret, |
| 899 | depth, type, |
| 900 | lowbound, upbound, i); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 901 | break; |
| 902 | } |
| 903 | } |
| 904 | } |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 905 | return ret; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 906 | } |
| 907 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 908 | 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] | 909 | { |
| 910 | struct sk_buff *buf; |
| 911 | struct tipc_name_table_query *argv; |
| 912 | struct tlv_desc *rep_tlv; |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 913 | char *pb; |
| 914 | int pb_len; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 915 | int str_len; |
| 916 | |
| 917 | 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] | 918 | return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 919 | |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 920 | buf = tipc_cfg_reply_alloc(TLV_SPACE(ULTRA_STRING_MAX_LEN)); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 921 | if (!buf) |
| 922 | return NULL; |
| 923 | |
| 924 | rep_tlv = (struct tlv_desc *)buf->data; |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 925 | pb = TLV_DATA(rep_tlv); |
| 926 | pb_len = ULTRA_STRING_MAX_LEN; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 927 | argv = (struct tipc_name_table_query *)TLV_DATA(req_tlv_area); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 928 | read_lock_bh(&tipc_nametbl_lock); |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 929 | str_len = nametbl_list(pb, pb_len, ntohl(argv->depth), |
| 930 | ntohl(argv->type), |
| 931 | ntohl(argv->lowbound), ntohl(argv->upbound)); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 932 | read_unlock_bh(&tipc_nametbl_lock); |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 933 | str_len += 1; /* for "\0" */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 934 | skb_put(buf, TLV_SPACE(str_len)); |
| 935 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); |
| 936 | |
| 937 | return buf; |
| 938 | } |
| 939 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 940 | int tipc_nametbl_init(void) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 941 | { |
Ying Xue | f046e7d | 2012-08-16 12:09:11 +0000 | [diff] [blame] | 942 | table.types = kcalloc(TIPC_NAMETBL_SIZE, sizeof(struct hlist_head), |
Allan Stephens | 4e3e6dc | 2008-05-12 15:41:53 -0700 | [diff] [blame] | 943 | GFP_ATOMIC); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 944 | if (!table.types) |
| 945 | return -ENOMEM; |
| 946 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 947 | table.local_publ_count = 0; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 948 | return 0; |
| 949 | } |
| 950 | |
Erik Hugne | 1bb8dce | 2014-03-06 14:40:20 +0100 | [diff] [blame] | 951 | /** |
| 952 | * tipc_purge_publications - remove all publications for a given type |
| 953 | * |
| 954 | * tipc_nametbl_lock must be held when calling this function |
| 955 | */ |
| 956 | static void tipc_purge_publications(struct name_seq *seq) |
| 957 | { |
| 958 | struct publication *publ, *safe; |
| 959 | struct sub_seq *sseq; |
| 960 | struct name_info *info; |
| 961 | |
| 962 | if (!seq->sseqs) { |
| 963 | nameseq_delete_empty(seq); |
| 964 | return; |
| 965 | } |
| 966 | sseq = seq->sseqs; |
| 967 | info = sseq->info; |
| 968 | list_for_each_entry_safe(publ, safe, &info->zone_list, zone_list) { |
| 969 | tipc_nametbl_remove_publ(publ->type, publ->lower, publ->node, |
| 970 | publ->ref, publ->key); |
Ying Xue | 1621b94 | 2014-04-29 11:12:18 +0800 | [diff] [blame] | 971 | kfree(publ); |
Erik Hugne | 1bb8dce | 2014-03-06 14:40:20 +0100 | [diff] [blame] | 972 | } |
| 973 | } |
| 974 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 975 | void tipc_nametbl_stop(void) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 976 | { |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 977 | u32 i; |
Erik Hugne | 1bb8dce | 2014-03-06 14:40:20 +0100 | [diff] [blame] | 978 | struct name_seq *seq; |
| 979 | struct hlist_head *seq_head; |
| 980 | struct hlist_node *safe; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 981 | |
Erik Hugne | 1bb8dce | 2014-03-06 14:40:20 +0100 | [diff] [blame] | 982 | /* Verify name table is empty and purge any lingering |
| 983 | * publications, then release the name table |
| 984 | */ |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 985 | write_lock_bh(&tipc_nametbl_lock); |
Ying Xue | f046e7d | 2012-08-16 12:09:11 +0000 | [diff] [blame] | 986 | for (i = 0; i < TIPC_NAMETBL_SIZE; i++) { |
Paul Gortmaker | f705ab9 | 2012-07-11 17:35:01 -0400 | [diff] [blame] | 987 | if (hlist_empty(&table.types[i])) |
| 988 | continue; |
Erik Hugne | 1bb8dce | 2014-03-06 14:40:20 +0100 | [diff] [blame] | 989 | seq_head = &table.types[i]; |
| 990 | hlist_for_each_entry_safe(seq, safe, seq_head, ns_list) { |
| 991 | tipc_purge_publications(seq); |
| 992 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 993 | } |
| 994 | kfree(table.types); |
| 995 | table.types = NULL; |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 996 | write_unlock_bh(&tipc_nametbl_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 997 | } |