Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1 | /* |
| 2 | * net/tipc/bearer.h: Include file for TIPC bearer code |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 3 | * |
Richard Alpe | 0655f6a | 2014-11-20 10:29:07 +0100 | [diff] [blame] | 4 | * Copyright (c) 1996-2006, 2013-2014, Ericsson AB |
Allan Stephens | 2d627b9 | 2011-01-07 13:00:11 -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 | #ifndef _TIPC_BEARER_H |
| 38 | #define _TIPC_BEARER_H |
| 39 | |
Richard Alpe | 0655f6a | 2014-11-20 10:29:07 +0100 | [diff] [blame] | 40 | #include "netlink.h" |
Jon Paul Maloy | a6bf70f | 2015-05-14 10:46:13 -0400 | [diff] [blame^] | 41 | #include "core.h" |
Richard Alpe | 0655f6a | 2014-11-20 10:29:07 +0100 | [diff] [blame] | 42 | #include <net/genetlink.h> |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 43 | |
Erik Hugne | d0f9193 | 2015-03-05 10:23:49 +0100 | [diff] [blame] | 44 | #define MAX_MEDIA 3 |
Ying Xue | 1da4656 | 2015-01-09 15:27:07 +0800 | [diff] [blame] | 45 | #define MAX_NODES 4096 |
| 46 | #define WSIZE 32 |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 47 | |
Jon Paul Maloy | 38504c2 | 2014-05-14 05:39:13 -0400 | [diff] [blame] | 48 | /* Identifiers associated with TIPC message header media address info |
| 49 | * - address info field is 32 bytes long |
| 50 | * - the field's actual content and length is defined per media |
| 51 | * - remaining unused bytes in the field are set to zero |
Allan Stephens | 4d163a3 | 2011-10-07 13:37:34 -0400 | [diff] [blame] | 52 | */ |
Erik Hugne | 91e2eb5 | 2015-02-27 08:56:57 +0100 | [diff] [blame] | 53 | #define TIPC_MEDIA_INFO_SIZE 32 |
Allan Stephens | 4d163a3 | 2011-10-07 13:37:34 -0400 | [diff] [blame] | 54 | #define TIPC_MEDIA_TYPE_OFFSET 3 |
Erik Hugne | d76a436 | 2015-02-27 08:56:58 +0100 | [diff] [blame] | 55 | #define TIPC_MEDIA_ADDR_OFFSET 4 |
Allan Stephens | 4d163a3 | 2011-10-07 13:37:34 -0400 | [diff] [blame] | 56 | |
| 57 | /* |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 58 | * Identifiers of supported TIPC media types |
| 59 | */ |
| 60 | #define TIPC_MEDIA_TYPE_ETH 1 |
Patrick McHardy | a29a194 | 2013-04-17 06:18:28 +0000 | [diff] [blame] | 61 | #define TIPC_MEDIA_TYPE_IB 2 |
Erik Hugne | d0f9193 | 2015-03-05 10:23:49 +0100 | [diff] [blame] | 62 | #define TIPC_MEDIA_TYPE_UDP 3 |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 63 | |
Ben Hutchings | 2c53040 | 2012-07-10 10:55:09 +0000 | [diff] [blame] | 64 | /** |
Ying Xue | 1da4656 | 2015-01-09 15:27:07 +0800 | [diff] [blame] | 65 | * struct tipc_node_map - set of node identifiers |
| 66 | * @count: # of nodes in set |
| 67 | * @map: bitmap of node identifiers that are in the set |
| 68 | */ |
| 69 | struct tipc_node_map { |
| 70 | u32 count; |
| 71 | u32 map[MAX_NODES / WSIZE]; |
| 72 | }; |
| 73 | |
| 74 | /** |
Allan Stephens | 3d749a6 | 2011-10-07 15:19:11 -0400 | [diff] [blame] | 75 | * struct tipc_media_addr - destination address used by TIPC bearers |
| 76 | * @value: address info (format defined by media) |
| 77 | * @media_id: TIPC media type identifier |
| 78 | * @broadcast: non-zero if address is a broadcast address |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 79 | */ |
| 80 | struct tipc_media_addr { |
Erik Hugne | 91e2eb5 | 2015-02-27 08:56:57 +0100 | [diff] [blame] | 81 | u8 value[TIPC_MEDIA_INFO_SIZE]; |
Allan Stephens | 3d749a6 | 2011-10-07 15:19:11 -0400 | [diff] [blame] | 82 | u8 media_id; |
| 83 | u8 broadcast; |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 84 | }; |
| 85 | |
Allan Stephens | 2d627b9 | 2011-01-07 13:00:11 -0500 | [diff] [blame] | 86 | struct tipc_bearer; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 87 | |
| 88 | /** |
Jon Paul Maloy | ef72a7e | 2013-12-10 20:45:40 -0800 | [diff] [blame] | 89 | * struct tipc_media - Media specific info exposed to generic bearer layer |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 90 | * @send_msg: routine which handles buffer transmission |
Ying Xue | 4babbaa | 2013-10-18 07:23:17 +0200 | [diff] [blame] | 91 | * @enable_media: routine which enables a media |
| 92 | * @disable_media: routine which disables a media |
Jon Paul Maloy | 38504c2 | 2014-05-14 05:39:13 -0400 | [diff] [blame] | 93 | * @addr2str: convert media address format to string |
| 94 | * @addr2msg: convert from media addr format to discovery msg addr format |
| 95 | * @msg2addr: convert from discovery msg addr format to media addr format |
| 96 | * @raw2addr: convert from raw addr format to media addr format |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 97 | * @priority: default link (and bearer) priority |
| 98 | * @tolerance: default time (in ms) before declaring link failure |
| 99 | * @window: default window (in packets) before declaring link congestion |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 100 | * @type_id: TIPC media identifier |
Ying Xue | e4d050c | 2013-12-10 20:45:43 -0800 | [diff] [blame] | 101 | * @hwaddr_len: TIPC media address len |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 102 | * @name: media name |
| 103 | */ |
Paul Gortmaker | 358a0d1 | 2011-12-29 20:19:42 -0500 | [diff] [blame] | 104 | struct tipc_media { |
Ying Xue | 1da4656 | 2015-01-09 15:27:07 +0800 | [diff] [blame] | 105 | int (*send_msg)(struct net *net, struct sk_buff *buf, |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 106 | struct tipc_bearer *b_ptr, |
| 107 | struct tipc_media_addr *dest); |
Erik Hugne | d0f9193 | 2015-03-05 10:23:49 +0100 | [diff] [blame] | 108 | int (*enable_media)(struct net *net, struct tipc_bearer *b_ptr, |
| 109 | struct nlattr *attr[]); |
Ying Xue | 4babbaa | 2013-10-18 07:23:17 +0200 | [diff] [blame] | 110 | void (*disable_media)(struct tipc_bearer *b_ptr); |
Jon Paul Maloy | 38504c2 | 2014-05-14 05:39:13 -0400 | [diff] [blame] | 111 | int (*addr2str)(struct tipc_media_addr *addr, |
| 112 | char *strbuf, |
| 113 | int bufsz); |
| 114 | int (*addr2msg)(char *msg, struct tipc_media_addr *addr); |
| 115 | int (*msg2addr)(struct tipc_bearer *b, |
| 116 | struct tipc_media_addr *addr, |
| 117 | char *msg); |
| 118 | int (*raw2addr)(struct tipc_bearer *b, |
| 119 | struct tipc_media_addr *addr, |
| 120 | char *raw); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 121 | u32 priority; |
| 122 | u32 tolerance; |
| 123 | u32 window; |
| 124 | u32 type_id; |
Ying Xue | e4d050c | 2013-12-10 20:45:43 -0800 | [diff] [blame] | 125 | u32 hwaddr_len; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 126 | char name[TIPC_MAX_MEDIA_NAME]; |
| 127 | }; |
| 128 | |
| 129 | /** |
Jon Paul Maloy | ef72a7e | 2013-12-10 20:45:40 -0800 | [diff] [blame] | 130 | * struct tipc_bearer - Generic TIPC bearer structure |
Ying Xue | a830452 | 2014-02-13 17:29:17 -0500 | [diff] [blame] | 131 | * @media_ptr: pointer to additional media-specific information about bearer |
Allan Stephens | 2d627b9 | 2011-01-07 13:00:11 -0500 | [diff] [blame] | 132 | * @mtu: max packet size bearer can support |
Allan Stephens | 2d627b9 | 2011-01-07 13:00:11 -0500 | [diff] [blame] | 133 | * @addr: media-specific address associated with bearer |
| 134 | * @name: bearer name (format = media:interface) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 135 | * @media: ptr to media structure associated with bearer |
Jon Paul Maloy | ef72a7e | 2013-12-10 20:45:40 -0800 | [diff] [blame] | 136 | * @bcast_addr: media address used in broadcasting |
Ying Xue | f8322df | 2014-04-21 10:55:45 +0800 | [diff] [blame] | 137 | * @rcu: rcu struct for tipc_bearer |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 138 | * @priority: default link priority for bearer |
Allan Stephens | 5c216e1 | 2011-10-18 11:34:29 -0400 | [diff] [blame] | 139 | * @window: default window size for bearer |
| 140 | * @tolerance: default link tolerance for bearer |
Erik Hugne | a21a584 | 2014-03-28 10:32:08 +0100 | [diff] [blame] | 141 | * @domain: network domain to which links can be established |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 142 | * @identity: array index of this bearer within TIPC bearer array |
| 143 | * @link_req: ptr to (optional) structure making periodic link setup requests |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 144 | * @net_plane: network plane ('A' through 'H') currently associated with bearer |
| 145 | * @nodes: indicates which nodes in cluster can be reached through bearer |
Allan Stephens | 2d627b9 | 2011-01-07 13:00:11 -0500 | [diff] [blame] | 146 | * |
| 147 | * Note: media-specific code is responsible for initialization of the fields |
| 148 | * indicated below when a bearer is enabled; TIPC's generic bearer code takes |
| 149 | * care of initializing all other fields. |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 150 | */ |
Allan Stephens | 2d627b9 | 2011-01-07 13:00:11 -0500 | [diff] [blame] | 151 | struct tipc_bearer { |
Ying Xue | 2231c5a | 2014-04-21 10:55:47 +0800 | [diff] [blame] | 152 | void __rcu *media_ptr; /* initalized by media */ |
Allan Stephens | 2d627b9 | 2011-01-07 13:00:11 -0500 | [diff] [blame] | 153 | u32 mtu; /* initalized by media */ |
Allan Stephens | 2d627b9 | 2011-01-07 13:00:11 -0500 | [diff] [blame] | 154 | struct tipc_media_addr addr; /* initalized by media */ |
| 155 | char name[TIPC_MAX_BEARER_NAME]; |
Paul Gortmaker | 358a0d1 | 2011-12-29 20:19:42 -0500 | [diff] [blame] | 156 | struct tipc_media *media; |
Patrick McHardy | 8aeb89f | 2013-04-17 06:18:26 +0000 | [diff] [blame] | 157 | struct tipc_media_addr bcast_addr; |
Ying Xue | f8322df | 2014-04-21 10:55:45 +0800 | [diff] [blame] | 158 | struct rcu_head rcu; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 159 | u32 priority; |
Allan Stephens | 5c216e1 | 2011-10-18 11:34:29 -0400 | [diff] [blame] | 160 | u32 window; |
| 161 | u32 tolerance; |
Erik Hugne | a21a584 | 2014-03-28 10:32:08 +0100 | [diff] [blame] | 162 | u32 domain; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 163 | u32 identity; |
Paul Gortmaker | a18c4bc | 2011-12-29 20:58:42 -0500 | [diff] [blame] | 164 | struct tipc_link_req *link_req; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 165 | char net_plane; |
David S. Miller | 6c00055 | 2008-09-02 23:38:32 -0700 | [diff] [blame] | 166 | struct tipc_node_map nodes; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 167 | }; |
| 168 | |
Paul Gortmaker | f19765f | 2011-12-29 21:39:49 -0500 | [diff] [blame] | 169 | struct tipc_bearer_names { |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 170 | char media_name[TIPC_MAX_MEDIA_NAME]; |
| 171 | char if_name[TIPC_MAX_IF_NAME]; |
| 172 | }; |
| 173 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 174 | /* |
| 175 | * TIPC routines available to supported media types |
| 176 | */ |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 177 | |
Ying Xue | c93d3ba | 2015-01-09 15:27:04 +0800 | [diff] [blame] | 178 | void tipc_rcv(struct net *net, struct sk_buff *skb, struct tipc_bearer *b_ptr); |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 179 | |
| 180 | /* |
| 181 | * Routines made available to TIPC by supported media types |
| 182 | */ |
Jon Paul Maloy | 5702dba | 2013-12-10 20:45:39 -0800 | [diff] [blame] | 183 | extern struct tipc_media eth_media_info; |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 184 | |
Patrick McHardy | a29a194 | 2013-04-17 06:18:28 +0000 | [diff] [blame] | 185 | #ifdef CONFIG_TIPC_MEDIA_IB |
Jon Paul Maloy | 5702dba | 2013-12-10 20:45:39 -0800 | [diff] [blame] | 186 | extern struct tipc_media ib_media_info; |
Patrick McHardy | a29a194 | 2013-04-17 06:18:28 +0000 | [diff] [blame] | 187 | #endif |
Erik Hugne | d0f9193 | 2015-03-05 10:23:49 +0100 | [diff] [blame] | 188 | #ifdef CONFIG_TIPC_MEDIA_UDP |
| 189 | extern struct tipc_media udp_media_info; |
| 190 | #endif |
Patrick McHardy | a29a194 | 2013-04-17 06:18:28 +0000 | [diff] [blame] | 191 | |
Richard Alpe | 0655f6a | 2014-11-20 10:29:07 +0100 | [diff] [blame] | 192 | int tipc_nl_bearer_disable(struct sk_buff *skb, struct genl_info *info); |
| 193 | int tipc_nl_bearer_enable(struct sk_buff *skb, struct genl_info *info); |
Richard Alpe | 35b9dd7 | 2014-11-20 10:29:08 +0100 | [diff] [blame] | 194 | int tipc_nl_bearer_dump(struct sk_buff *skb, struct netlink_callback *cb); |
| 195 | int tipc_nl_bearer_get(struct sk_buff *skb, struct genl_info *info); |
Richard Alpe | 315c00b | 2014-11-20 10:29:09 +0100 | [diff] [blame] | 196 | int tipc_nl_bearer_set(struct sk_buff *skb, struct genl_info *info); |
Richard Alpe | 0655f6a | 2014-11-20 10:29:07 +0100 | [diff] [blame] | 197 | |
Richard Alpe | 46f15c6 | 2014-11-20 10:29:15 +0100 | [diff] [blame] | 198 | int tipc_nl_media_dump(struct sk_buff *skb, struct netlink_callback *cb); |
| 199 | int tipc_nl_media_get(struct sk_buff *skb, struct genl_info *info); |
Richard Alpe | 1e55417 | 2014-11-20 10:29:16 +0100 | [diff] [blame] | 200 | int tipc_nl_media_set(struct sk_buff *skb, struct genl_info *info); |
Richard Alpe | 46f15c6 | 2014-11-20 10:29:15 +0100 | [diff] [blame] | 201 | |
Allan Stephens | 5c216e1 | 2011-10-18 11:34:29 -0400 | [diff] [blame] | 202 | int tipc_media_set_priority(const char *name, u32 new_value); |
| 203 | int tipc_media_set_window(const char *name, u32 new_value); |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 204 | void tipc_media_addr_printf(char *buf, int len, struct tipc_media_addr *a); |
Erik Hugne | d0f9193 | 2015-03-05 10:23:49 +0100 | [diff] [blame] | 205 | int tipc_enable_l2_media(struct net *net, struct tipc_bearer *b, |
| 206 | struct nlattr *attrs[]); |
Ying Xue | e4d050c | 2013-12-10 20:45:43 -0800 | [diff] [blame] | 207 | void tipc_disable_l2_media(struct tipc_bearer *b); |
Ying Xue | 1da4656 | 2015-01-09 15:27:07 +0800 | [diff] [blame] | 208 | int tipc_l2_send_msg(struct net *net, struct sk_buff *buf, |
| 209 | struct tipc_bearer *b, struct tipc_media_addr *dest); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 210 | |
Ying Xue | 7f9f95d | 2015-01-09 15:27:06 +0800 | [diff] [blame] | 211 | void tipc_bearer_add_dest(struct net *net, u32 bearer_id, u32 dest); |
| 212 | void tipc_bearer_remove_dest(struct net *net, u32 bearer_id, u32 dest); |
| 213 | struct tipc_bearer *tipc_bearer_find(struct net *net, const char *name); |
Paul Gortmaker | 358a0d1 | 2011-12-29 20:19:42 -0500 | [diff] [blame] | 214 | struct tipc_media *tipc_media_find(const char *name); |
Ying Xue | 6e967ad | 2013-12-10 20:45:42 -0800 | [diff] [blame] | 215 | int tipc_bearer_setup(void); |
| 216 | void tipc_bearer_cleanup(void); |
Ying Xue | f2f9800 | 2015-01-09 15:27:05 +0800 | [diff] [blame] | 217 | void tipc_bearer_stop(struct net *net); |
Ying Xue | 7f9f95d | 2015-01-09 15:27:06 +0800 | [diff] [blame] | 218 | void tipc_bearer_send(struct net *net, u32 bearer_id, struct sk_buff *buf, |
Ying Xue | e4d050c | 2013-12-10 20:45:43 -0800 | [diff] [blame] | 219 | struct tipc_media_addr *dest); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 220 | |
Allan Stephens | b274f4a | 2010-05-11 14:30:16 +0000 | [diff] [blame] | 221 | #endif /* _TIPC_BEARER_H */ |