Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1 | /* |
| 2 | * net/tipc/name_distr.c: TIPC name distribution code |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 3 | * |
Erik Hugne | a5325ae | 2014-08-28 09:08:47 +0200 | [diff] [blame] | 4 | * Copyright (c) 2000-2006, 2014, Ericsson AB |
Allan Stephens | 431697e | 2011-02-23 13:51:15 -0500 | [diff] [blame] | 5 | * Copyright (c) 2005, 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" |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 38 | #include "link.h" |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 39 | #include "name_distr.h" |
| 40 | |
Erik Hugne | a5325ae | 2014-08-28 09:08:47 +0200 | [diff] [blame] | 41 | int sysctl_tipc_named_timeout __read_mostly = 2000; |
| 42 | |
Erik Hugne | a5325ae | 2014-08-28 09:08:47 +0200 | [diff] [blame] | 43 | struct distr_queue_item { |
| 44 | struct distr_item i; |
| 45 | u32 dtype; |
| 46 | u32 node; |
| 47 | unsigned long expires; |
| 48 | struct list_head next; |
| 49 | }; |
| 50 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 51 | /** |
| 52 | * publ_to_item - add publication info to a publication message |
| 53 | */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 54 | static void publ_to_item(struct distr_item *i, struct publication *p) |
| 55 | { |
| 56 | i->type = htonl(p->type); |
| 57 | i->lower = htonl(p->lower); |
| 58 | i->upper = htonl(p->upper); |
| 59 | i->ref = htonl(p->ref); |
| 60 | i->key = htonl(p->key); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 61 | } |
| 62 | |
| 63 | /** |
| 64 | * named_prepare_buf - allocate & initialize a publication message |
Parthasarathy Bhuvaragan | d2f394d | 2016-09-01 16:22:16 +0200 | [diff] [blame] | 65 | * |
| 66 | * The buffer returned is of size INT_H_SIZE + payload size |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 67 | */ |
Ying Xue | 3474753 | 2015-01-09 15:27:10 +0800 | [diff] [blame] | 68 | static struct sk_buff *named_prepare_buf(struct net *net, u32 type, u32 size, |
| 69 | u32 dest) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 70 | { |
Jon Paul Maloy | c589863 | 2015-02-05 08:36:36 -0500 | [diff] [blame] | 71 | struct tipc_net *tn = net_generic(net, tipc_net_id); |
Parthasarathy Bhuvaragan | 57d5f64 | 2017-01-13 15:46:25 +0100 | [diff] [blame] | 72 | struct sk_buff *buf = tipc_buf_acquire(INT_H_SIZE + size, GFP_ATOMIC); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 73 | struct tipc_msg *msg; |
| 74 | |
| 75 | if (buf != NULL) { |
| 76 | msg = buf_msg(buf); |
Jon Paul Maloy | c589863 | 2015-02-05 08:36:36 -0500 | [diff] [blame] | 77 | tipc_msg_init(tn->own_addr, msg, NAME_DISTRIBUTOR, type, |
| 78 | INT_H_SIZE, dest); |
Allan Stephens | 741d9eb | 2011-05-31 15:03:18 -0400 | [diff] [blame] | 79 | msg_set_size(msg, INT_H_SIZE + size); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 80 | } |
| 81 | return buf; |
| 82 | } |
| 83 | |
| 84 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 85 | * tipc_named_publish - tell other nodes about a new publication by this node |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 86 | */ |
Ying Xue | 4ac1c8d | 2015-01-09 15:27:09 +0800 | [diff] [blame] | 87 | struct sk_buff *tipc_named_publish(struct net *net, struct publication *publ) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 88 | { |
Jon Maloy | 64a52b26d5 | 2018-03-15 16:48:52 +0100 | [diff] [blame] | 89 | struct name_table *nt = tipc_name_table(net); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 90 | struct distr_item *item; |
Jon Maloy | 64a52b26d5 | 2018-03-15 16:48:52 +0100 | [diff] [blame] | 91 | struct sk_buff *skb; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 92 | |
Jon Maloy | 64a52b26d5 | 2018-03-15 16:48:52 +0100 | [diff] [blame] | 93 | if (publ->scope == TIPC_NODE_SCOPE) { |
Jon Maloy | 935439c | 2018-03-15 16:48:54 +0100 | [diff] [blame^] | 94 | list_add_tail_rcu(&publ->binding_node, &nt->node_scope); |
Ying Xue | eab8c045 | 2014-04-28 18:00:10 +0800 | [diff] [blame] | 95 | return NULL; |
Jon Maloy | 64a52b26d5 | 2018-03-15 16:48:52 +0100 | [diff] [blame] | 96 | } |
Jon Maloy | 935439c | 2018-03-15 16:48:54 +0100 | [diff] [blame^] | 97 | list_add_tail_rcu(&publ->binding_node, &nt->cluster_scope); |
Allan Stephens | 1110b8d | 2012-04-17 17:57:52 -0400 | [diff] [blame] | 98 | |
Jon Maloy | 64a52b26d5 | 2018-03-15 16:48:52 +0100 | [diff] [blame] | 99 | skb = named_prepare_buf(net, PUBLICATION, ITEM_SIZE, 0); |
| 100 | if (!skb) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 101 | pr_warn("Publication distribution failure\n"); |
Ying Xue | eab8c045 | 2014-04-28 18:00:10 +0800 | [diff] [blame] | 102 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 103 | } |
| 104 | |
Jon Maloy | 64a52b26d5 | 2018-03-15 16:48:52 +0100 | [diff] [blame] | 105 | item = (struct distr_item *)msg_data(buf_msg(skb)); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 106 | publ_to_item(item, publ); |
Jon Maloy | 64a52b26d5 | 2018-03-15 16:48:52 +0100 | [diff] [blame] | 107 | return skb; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 108 | } |
| 109 | |
| 110 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 111 | * tipc_named_withdraw - tell other nodes about a withdrawn publication by this node |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 112 | */ |
Ying Xue | 3474753 | 2015-01-09 15:27:10 +0800 | [diff] [blame] | 113 | struct sk_buff *tipc_named_withdraw(struct net *net, struct publication *publ) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 114 | { |
| 115 | struct sk_buff *buf; |
| 116 | struct distr_item *item; |
| 117 | |
Jon Maloy | 935439c | 2018-03-15 16:48:54 +0100 | [diff] [blame^] | 118 | list_del(&publ->binding_node); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 119 | |
Allan Stephens | 1110b8d | 2012-04-17 17:57:52 -0400 | [diff] [blame] | 120 | if (publ->scope == TIPC_NODE_SCOPE) |
Ying Xue | eab8c045 | 2014-04-28 18:00:10 +0800 | [diff] [blame] | 121 | return NULL; |
Allan Stephens | 1110b8d | 2012-04-17 17:57:52 -0400 | [diff] [blame] | 122 | |
Ying Xue | 3474753 | 2015-01-09 15:27:10 +0800 | [diff] [blame] | 123 | buf = named_prepare_buf(net, WITHDRAWAL, ITEM_SIZE, 0); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 124 | if (!buf) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 125 | pr_warn("Withdrawal distribution failure\n"); |
Ying Xue | eab8c045 | 2014-04-28 18:00:10 +0800 | [diff] [blame] | 126 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 127 | } |
| 128 | |
| 129 | item = (struct distr_item *)msg_data(buf_msg(buf)); |
| 130 | publ_to_item(item, publ); |
Ying Xue | eab8c045 | 2014-04-28 18:00:10 +0800 | [diff] [blame] | 131 | return buf; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 132 | } |
| 133 | |
Jon Paul Maloy | dbdf6d2 | 2014-07-16 20:40:58 -0400 | [diff] [blame] | 134 | /** |
Allan Stephens | e11aa05 | 2012-04-17 17:57:52 -0400 | [diff] [blame] | 135 | * named_distribute - prepare name info for bulk distribution to another node |
Ying Xue | a6ca109 | 2014-11-26 11:41:55 +0800 | [diff] [blame] | 136 | * @list: list of messages (buffers) to be returned from this function |
Jon Paul Maloy | dbdf6d2 | 2014-07-16 20:40:58 -0400 | [diff] [blame] | 137 | * @dnode: node to be updated |
| 138 | * @pls: linked list of publication items to be packed into buffer chain |
Allan Stephens | e11aa05 | 2012-04-17 17:57:52 -0400 | [diff] [blame] | 139 | */ |
Ying Xue | f2f9800 | 2015-01-09 15:27:05 +0800 | [diff] [blame] | 140 | static void named_distribute(struct net *net, struct sk_buff_head *list, |
| 141 | u32 dnode, struct list_head *pls) |
Allan Stephens | e11aa05 | 2012-04-17 17:57:52 -0400 | [diff] [blame] | 142 | { |
| 143 | struct publication *publ; |
Ying Xue | a6ca109 | 2014-11-26 11:41:55 +0800 | [diff] [blame] | 144 | struct sk_buff *skb = NULL; |
Allan Stephens | e11aa05 | 2012-04-17 17:57:52 -0400 | [diff] [blame] | 145 | struct distr_item *item = NULL; |
Parthasarathy Bhuvaragan | d2f394d | 2016-09-01 16:22:16 +0200 | [diff] [blame] | 146 | u32 msg_dsz = ((tipc_node_get_mtu(net, dnode, 0) - INT_H_SIZE) / |
| 147 | ITEM_SIZE) * ITEM_SIZE; |
| 148 | u32 msg_rem = msg_dsz; |
Allan Stephens | e11aa05 | 2012-04-17 17:57:52 -0400 | [diff] [blame] | 149 | |
Jon Maloy | 935439c | 2018-03-15 16:48:54 +0100 | [diff] [blame^] | 150 | list_for_each_entry(publ, pls, binding_node) { |
Jon Paul Maloy | dbdf6d2 | 2014-07-16 20:40:58 -0400 | [diff] [blame] | 151 | /* Prepare next buffer: */ |
Ying Xue | a6ca109 | 2014-11-26 11:41:55 +0800 | [diff] [blame] | 152 | if (!skb) { |
Ying Xue | 3474753 | 2015-01-09 15:27:10 +0800 | [diff] [blame] | 153 | skb = named_prepare_buf(net, PUBLICATION, msg_rem, |
| 154 | dnode); |
Ying Xue | a6ca109 | 2014-11-26 11:41:55 +0800 | [diff] [blame] | 155 | if (!skb) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 156 | pr_warn("Bulk publication failure\n"); |
Allan Stephens | e11aa05 | 2012-04-17 17:57:52 -0400 | [diff] [blame] | 157 | return; |
| 158 | } |
Jon Paul Maloy | 06bd2b1 | 2016-10-27 18:51:55 -0400 | [diff] [blame] | 159 | msg_set_bc_ack_invalid(buf_msg(skb), true); |
Ying Xue | a6ca109 | 2014-11-26 11:41:55 +0800 | [diff] [blame] | 160 | item = (struct distr_item *)msg_data(buf_msg(skb)); |
Allan Stephens | e11aa05 | 2012-04-17 17:57:52 -0400 | [diff] [blame] | 161 | } |
Jon Paul Maloy | dbdf6d2 | 2014-07-16 20:40:58 -0400 | [diff] [blame] | 162 | |
| 163 | /* Pack publication into message: */ |
Allan Stephens | e11aa05 | 2012-04-17 17:57:52 -0400 | [diff] [blame] | 164 | publ_to_item(item, publ); |
| 165 | item++; |
Jon Paul Maloy | dbdf6d2 | 2014-07-16 20:40:58 -0400 | [diff] [blame] | 166 | msg_rem -= ITEM_SIZE; |
| 167 | |
| 168 | /* Append full buffer to list: */ |
| 169 | if (!msg_rem) { |
Ying Xue | a6ca109 | 2014-11-26 11:41:55 +0800 | [diff] [blame] | 170 | __skb_queue_tail(list, skb); |
| 171 | skb = NULL; |
Ying Xue | 1b61e70 | 2014-12-02 15:00:23 +0800 | [diff] [blame] | 172 | msg_rem = msg_dsz; |
Allan Stephens | e11aa05 | 2012-04-17 17:57:52 -0400 | [diff] [blame] | 173 | } |
| 174 | } |
Ying Xue | 1b61e70 | 2014-12-02 15:00:23 +0800 | [diff] [blame] | 175 | if (skb) { |
| 176 | msg_set_size(buf_msg(skb), INT_H_SIZE + (msg_dsz - msg_rem)); |
| 177 | skb_trim(skb, INT_H_SIZE + (msg_dsz - msg_rem)); |
| 178 | __skb_queue_tail(list, skb); |
| 179 | } |
Allan Stephens | e11aa05 | 2012-04-17 17:57:52 -0400 | [diff] [blame] | 180 | } |
| 181 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 182 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 183 | * tipc_named_node_up - tell specified node about all publications by this node |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 184 | */ |
Ying Xue | f2f9800 | 2015-01-09 15:27:05 +0800 | [diff] [blame] | 185 | void tipc_named_node_up(struct net *net, u32 dnode) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 186 | { |
Jon Maloy | 64a52b26d5 | 2018-03-15 16:48:52 +0100 | [diff] [blame] | 187 | struct name_table *nt = tipc_name_table(net); |
Ying Xue | a6ca109 | 2014-11-26 11:41:55 +0800 | [diff] [blame] | 188 | struct sk_buff_head head; |
| 189 | |
| 190 | __skb_queue_head_init(&head); |
Allan Stephens | 9aa88c2 | 2011-05-31 13:38:02 -0400 | [diff] [blame] | 191 | |
Ying Xue | 97ede29 | 2014-12-02 15:00:30 +0800 | [diff] [blame] | 192 | rcu_read_lock(); |
Jon Maloy | 64a52b26d5 | 2018-03-15 16:48:52 +0100 | [diff] [blame] | 193 | named_distribute(net, &head, dnode, &nt->cluster_scope); |
Ying Xue | 97ede29 | 2014-12-02 15:00:30 +0800 | [diff] [blame] | 194 | rcu_read_unlock(); |
Allan Stephens | 9aa88c2 | 2011-05-31 13:38:02 -0400 | [diff] [blame] | 195 | |
Jon Paul Maloy | c49a0a84 | 2015-10-22 08:51:47 -0400 | [diff] [blame] | 196 | tipc_node_xmit(net, &head, dnode, 0); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 197 | } |
| 198 | |
| 199 | /** |
Ying Xue | a8f48af | 2014-11-26 11:41:45 +0800 | [diff] [blame] | 200 | * tipc_publ_purge - remove publication associated with a failed node |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 201 | * |
| 202 | * Invoked for each publication issued by a newly failed node. |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 203 | * Removes publication structure from name table & deletes it. |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 204 | */ |
Ying Xue | f2f9800 | 2015-01-09 15:27:05 +0800 | [diff] [blame] | 205 | static void tipc_publ_purge(struct net *net, struct publication *publ, u32 addr) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 206 | { |
Ying Xue | 4ac1c8d | 2015-01-09 15:27:09 +0800 | [diff] [blame] | 207 | struct tipc_net *tn = net_generic(net, tipc_net_id); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 208 | struct publication *p; |
Allan Stephens | f131072c | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 209 | |
Ying Xue | 4ac1c8d | 2015-01-09 15:27:09 +0800 | [diff] [blame] | 210 | spin_lock_bh(&tn->nametbl_lock); |
| 211 | p = tipc_nametbl_remove_publ(net, publ->type, publ->lower, |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 212 | publ->node, publ->ref, publ->key); |
Allan Stephens | 431697e | 2011-02-23 13:51:15 -0500 | [diff] [blame] | 213 | if (p) |
Jon Maloy | 935439c | 2018-03-15 16:48:54 +0100 | [diff] [blame^] | 214 | tipc_node_unsubscribe(net, &p->binding_node, addr); |
Ying Xue | 4ac1c8d | 2015-01-09 15:27:09 +0800 | [diff] [blame] | 215 | spin_unlock_bh(&tn->nametbl_lock); |
Allan Stephens | f131072c | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 216 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 217 | if (p != publ) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 218 | pr_err("Unable to remove publication from failed node\n" |
| 219 | " (type=%u, lower=%u, node=0x%x, ref=%u, key=%u)\n", |
| 220 | publ->type, publ->lower, publ->node, publ->ref, |
| 221 | publ->key); |
Allan Stephens | f131072c | 2006-06-25 23:51:37 -0700 | [diff] [blame] | 222 | } |
| 223 | |
Ying Xue | 97ede29 | 2014-12-02 15:00:30 +0800 | [diff] [blame] | 224 | kfree_rcu(p, rcu); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 225 | } |
| 226 | |
Erik Hugne | ddb1d33 | 2016-04-07 10:40:44 -0400 | [diff] [blame] | 227 | /** |
| 228 | * tipc_dist_queue_purge - remove deferred updates from a node that went down |
| 229 | */ |
| 230 | static void tipc_dist_queue_purge(struct net *net, u32 addr) |
| 231 | { |
| 232 | struct tipc_net *tn = net_generic(net, tipc_net_id); |
| 233 | struct distr_queue_item *e, *tmp; |
| 234 | |
| 235 | spin_lock_bh(&tn->nametbl_lock); |
| 236 | list_for_each_entry_safe(e, tmp, &tn->dist_queue, next) { |
| 237 | if (e->node != addr) |
| 238 | continue; |
| 239 | list_del(&e->next); |
| 240 | kfree(e); |
| 241 | } |
| 242 | spin_unlock_bh(&tn->nametbl_lock); |
| 243 | } |
| 244 | |
Ying Xue | f2f9800 | 2015-01-09 15:27:05 +0800 | [diff] [blame] | 245 | void tipc_publ_notify(struct net *net, struct list_head *nsub_list, u32 addr) |
Ying Xue | a8f48af | 2014-11-26 11:41:45 +0800 | [diff] [blame] | 246 | { |
| 247 | struct publication *publ, *tmp; |
| 248 | |
Jon Maloy | 935439c | 2018-03-15 16:48:54 +0100 | [diff] [blame^] | 249 | list_for_each_entry_safe(publ, tmp, nsub_list, binding_node) |
Ying Xue | f2f9800 | 2015-01-09 15:27:05 +0800 | [diff] [blame] | 250 | tipc_publ_purge(net, publ, addr); |
Erik Hugne | ddb1d33 | 2016-04-07 10:40:44 -0400 | [diff] [blame] | 251 | tipc_dist_queue_purge(net, addr); |
Ying Xue | a8f48af | 2014-11-26 11:41:45 +0800 | [diff] [blame] | 252 | } |
| 253 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 254 | /** |
Erik Hugne | f4ad8a4 | 2014-08-28 09:08:46 +0200 | [diff] [blame] | 255 | * tipc_update_nametbl - try to process a nametable update and notify |
| 256 | * subscribers |
| 257 | * |
| 258 | * tipc_nametbl_lock must be held. |
| 259 | * Returns the publication item if successful, otherwise NULL. |
| 260 | */ |
Ying Xue | f2f9800 | 2015-01-09 15:27:05 +0800 | [diff] [blame] | 261 | static bool tipc_update_nametbl(struct net *net, struct distr_item *i, |
| 262 | u32 node, u32 dtype) |
Erik Hugne | f4ad8a4 | 2014-08-28 09:08:46 +0200 | [diff] [blame] | 263 | { |
| 264 | struct publication *publ = NULL; |
| 265 | |
| 266 | if (dtype == PUBLICATION) { |
Ying Xue | 4ac1c8d | 2015-01-09 15:27:09 +0800 | [diff] [blame] | 267 | publ = tipc_nametbl_insert_publ(net, ntohl(i->type), |
| 268 | ntohl(i->lower), |
Erik Hugne | f4ad8a4 | 2014-08-28 09:08:46 +0200 | [diff] [blame] | 269 | ntohl(i->upper), |
| 270 | TIPC_CLUSTER_SCOPE, node, |
| 271 | ntohl(i->ref), ntohl(i->key)); |
| 272 | if (publ) { |
Jon Maloy | 935439c | 2018-03-15 16:48:54 +0100 | [diff] [blame^] | 273 | tipc_node_subscribe(net, &publ->binding_node, node); |
Erik Hugne | 0fc4dff | 2014-09-10 14:02:50 +0200 | [diff] [blame] | 274 | return true; |
Erik Hugne | f4ad8a4 | 2014-08-28 09:08:46 +0200 | [diff] [blame] | 275 | } |
| 276 | } else if (dtype == WITHDRAWAL) { |
Ying Xue | 4ac1c8d | 2015-01-09 15:27:09 +0800 | [diff] [blame] | 277 | publ = tipc_nametbl_remove_publ(net, ntohl(i->type), |
| 278 | ntohl(i->lower), |
Erik Hugne | f4ad8a4 | 2014-08-28 09:08:46 +0200 | [diff] [blame] | 279 | node, ntohl(i->ref), |
| 280 | ntohl(i->key)); |
| 281 | if (publ) { |
Jon Maloy | 935439c | 2018-03-15 16:48:54 +0100 | [diff] [blame^] | 282 | tipc_node_unsubscribe(net, &publ->binding_node, node); |
Ying Xue | 97ede29 | 2014-12-02 15:00:30 +0800 | [diff] [blame] | 283 | kfree_rcu(publ, rcu); |
Erik Hugne | 0fc4dff | 2014-09-10 14:02:50 +0200 | [diff] [blame] | 284 | return true; |
Erik Hugne | f4ad8a4 | 2014-08-28 09:08:46 +0200 | [diff] [blame] | 285 | } |
| 286 | } else { |
| 287 | pr_warn("Unrecognized name table message received\n"); |
| 288 | } |
Erik Hugne | 0fc4dff | 2014-09-10 14:02:50 +0200 | [diff] [blame] | 289 | return false; |
Erik Hugne | f4ad8a4 | 2014-08-28 09:08:46 +0200 | [diff] [blame] | 290 | } |
| 291 | |
| 292 | /** |
Erik Hugne | a5325ae | 2014-08-28 09:08:47 +0200 | [diff] [blame] | 293 | * tipc_named_add_backlog - add a failed name table update to the backlog |
| 294 | * |
| 295 | */ |
Erik Hugne | 541726a | 2016-04-07 10:40:43 -0400 | [diff] [blame] | 296 | static void tipc_named_add_backlog(struct net *net, struct distr_item *i, |
| 297 | u32 type, u32 node) |
Erik Hugne | a5325ae | 2014-08-28 09:08:47 +0200 | [diff] [blame] | 298 | { |
| 299 | struct distr_queue_item *e; |
Erik Hugne | 541726a | 2016-04-07 10:40:43 -0400 | [diff] [blame] | 300 | struct tipc_net *tn = net_generic(net, tipc_net_id); |
Erik Hugne | a5325ae | 2014-08-28 09:08:47 +0200 | [diff] [blame] | 301 | unsigned long now = get_jiffies_64(); |
| 302 | |
| 303 | e = kzalloc(sizeof(*e), GFP_ATOMIC); |
| 304 | if (!e) |
| 305 | return; |
| 306 | e->dtype = type; |
| 307 | e->node = node; |
| 308 | e->expires = now + msecs_to_jiffies(sysctl_tipc_named_timeout); |
| 309 | memcpy(e, i, sizeof(*i)); |
Erik Hugne | 541726a | 2016-04-07 10:40:43 -0400 | [diff] [blame] | 310 | list_add_tail(&e->next, &tn->dist_queue); |
Erik Hugne | a5325ae | 2014-08-28 09:08:47 +0200 | [diff] [blame] | 311 | } |
| 312 | |
| 313 | /** |
| 314 | * tipc_named_process_backlog - try to process any pending name table updates |
| 315 | * from the network. |
| 316 | */ |
Ying Xue | f2f9800 | 2015-01-09 15:27:05 +0800 | [diff] [blame] | 317 | void tipc_named_process_backlog(struct net *net) |
Erik Hugne | a5325ae | 2014-08-28 09:08:47 +0200 | [diff] [blame] | 318 | { |
| 319 | struct distr_queue_item *e, *tmp; |
Erik Hugne | 541726a | 2016-04-07 10:40:43 -0400 | [diff] [blame] | 320 | struct tipc_net *tn = net_generic(net, tipc_net_id); |
Erik Hugne | a5325ae | 2014-08-28 09:08:47 +0200 | [diff] [blame] | 321 | char addr[16]; |
| 322 | unsigned long now = get_jiffies_64(); |
| 323 | |
Erik Hugne | 541726a | 2016-04-07 10:40:43 -0400 | [diff] [blame] | 324 | list_for_each_entry_safe(e, tmp, &tn->dist_queue, next) { |
Erik Hugne | a5325ae | 2014-08-28 09:08:47 +0200 | [diff] [blame] | 325 | if (time_after(e->expires, now)) { |
Ying Xue | f2f9800 | 2015-01-09 15:27:05 +0800 | [diff] [blame] | 326 | if (!tipc_update_nametbl(net, &e->i, e->node, e->dtype)) |
Erik Hugne | a5325ae | 2014-08-28 09:08:47 +0200 | [diff] [blame] | 327 | continue; |
| 328 | } else { |
| 329 | tipc_addr_string_fill(addr, e->node); |
| 330 | pr_warn_ratelimited("Dropping name table update (%d) of {%u, %u, %u} from %s key=%u\n", |
| 331 | e->dtype, ntohl(e->i.type), |
| 332 | ntohl(e->i.lower), |
| 333 | ntohl(e->i.upper), |
| 334 | addr, ntohl(e->i.key)); |
| 335 | } |
| 336 | list_del(&e->next); |
| 337 | kfree(e); |
| 338 | } |
| 339 | } |
| 340 | |
| 341 | /** |
Jon Paul Maloy | c637c10 | 2015-02-05 08:36:41 -0500 | [diff] [blame] | 342 | * tipc_named_rcv - process name table update messages sent by another node |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 343 | */ |
Jon Paul Maloy | c637c10 | 2015-02-05 08:36:41 -0500 | [diff] [blame] | 344 | void tipc_named_rcv(struct net *net, struct sk_buff_head *inputq) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 345 | { |
Ying Xue | 4ac1c8d | 2015-01-09 15:27:09 +0800 | [diff] [blame] | 346 | struct tipc_net *tn = net_generic(net, tipc_net_id); |
Jon Paul Maloy | c637c10 | 2015-02-05 08:36:41 -0500 | [diff] [blame] | 347 | struct tipc_msg *msg; |
| 348 | struct distr_item *item; |
| 349 | uint count; |
| 350 | u32 node; |
| 351 | struct sk_buff *skb; |
| 352 | int mtype; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 353 | |
Ying Xue | 4ac1c8d | 2015-01-09 15:27:09 +0800 | [diff] [blame] | 354 | spin_lock_bh(&tn->nametbl_lock); |
Jon Paul Maloy | c637c10 | 2015-02-05 08:36:41 -0500 | [diff] [blame] | 355 | for (skb = skb_dequeue(inputq); skb; skb = skb_dequeue(inputq)) { |
Jon Paul Maloy | c7cad0d | 2015-11-19 14:30:40 -0500 | [diff] [blame] | 356 | skb_linearize(skb); |
Jon Paul Maloy | c637c10 | 2015-02-05 08:36:41 -0500 | [diff] [blame] | 357 | msg = buf_msg(skb); |
| 358 | mtype = msg_type(msg); |
| 359 | item = (struct distr_item *)msg_data(msg); |
| 360 | count = msg_data_sz(msg) / ITEM_SIZE; |
| 361 | node = msg_orignode(msg); |
| 362 | while (count--) { |
| 363 | if (!tipc_update_nametbl(net, item, node, mtype)) |
Erik Hugne | 541726a | 2016-04-07 10:40:43 -0400 | [diff] [blame] | 364 | tipc_named_add_backlog(net, item, mtype, node); |
Jon Paul Maloy | c637c10 | 2015-02-05 08:36:41 -0500 | [diff] [blame] | 365 | item++; |
| 366 | } |
| 367 | kfree_skb(skb); |
| 368 | tipc_named_process_backlog(net); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 369 | } |
Ying Xue | 4ac1c8d | 2015-01-09 15:27:09 +0800 | [diff] [blame] | 370 | spin_unlock_bh(&tn->nametbl_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 371 | } |
| 372 | |
| 373 | /** |
Allan Stephens | 1110b8d | 2012-04-17 17:57:52 -0400 | [diff] [blame] | 374 | * tipc_named_reinit - re-initialize local publications |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 375 | * |
Allan Stephens | 945af1c | 2011-10-14 14:42:25 -0400 | [diff] [blame] | 376 | * This routine is called whenever TIPC networking is enabled. |
Allan Stephens | 1110b8d | 2012-04-17 17:57:52 -0400 | [diff] [blame] | 377 | * All name table entries published by this node are updated to reflect |
| 378 | * the node's new network address. |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 379 | */ |
Ying Xue | 4ac1c8d | 2015-01-09 15:27:09 +0800 | [diff] [blame] | 380 | void tipc_named_reinit(struct net *net) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 381 | { |
Jon Maloy | 64a52b26d5 | 2018-03-15 16:48:52 +0100 | [diff] [blame] | 382 | struct name_table *nt = tipc_name_table(net); |
| 383 | struct tipc_net *tn = tipc_net(net); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 384 | struct publication *publ; |
| 385 | |
Ying Xue | 4ac1c8d | 2015-01-09 15:27:09 +0800 | [diff] [blame] | 386 | spin_lock_bh(&tn->nametbl_lock); |
Allan Stephens | 945af1c | 2011-10-14 14:42:25 -0400 | [diff] [blame] | 387 | |
Jon Maloy | 935439c | 2018-03-15 16:48:54 +0100 | [diff] [blame^] | 388 | list_for_each_entry_rcu(publ, &nt->node_scope, binding_node) |
Jon Maloy | 64a52b26d5 | 2018-03-15 16:48:52 +0100 | [diff] [blame] | 389 | publ->node = tn->own_addr; |
Jon Maloy | 935439c | 2018-03-15 16:48:54 +0100 | [diff] [blame^] | 390 | list_for_each_entry_rcu(publ, &nt->cluster_scope, binding_node) |
Jon Maloy | 64a52b26d5 | 2018-03-15 16:48:52 +0100 | [diff] [blame] | 391 | publ->node = tn->own_addr; |
Allan Stephens | 945af1c | 2011-10-14 14:42:25 -0400 | [diff] [blame] | 392 | |
Ying Xue | 4ac1c8d | 2015-01-09 15:27:09 +0800 | [diff] [blame] | 393 | spin_unlock_bh(&tn->nametbl_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 394 | } |