Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1 | /* |
| 2 | * net/tipc/bearer.c: TIPC bearer code |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 3 | * |
Jon Paul Maloy | 35c55c9 | 2016-06-13 20:46:22 -0400 | [diff] [blame] | 4 | * Copyright (c) 1996-2006, 2013-2016, Ericsson AB |
Ying Xue | e4d050c | 2013-12-10 20:45:43 -0800 | [diff] [blame] | 5 | * Copyright (c) 2004-2006, 2010-2013, 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 | |
Ying Xue | 7f9f95d | 2015-01-09 15:27:06 +0800 | [diff] [blame] | 37 | #include <net/sock.h> |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 38 | #include "core.h" |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 39 | #include "bearer.h" |
Richard Alpe | 0655f6a | 2014-11-20 10:29:07 +0100 | [diff] [blame] | 40 | #include "link.h" |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 41 | #include "discover.h" |
Jon Paul Maloy | 35c55c9 | 2016-06-13 20:46:22 -0400 | [diff] [blame] | 42 | #include "monitor.h" |
Ying Xue | 1da4656 | 2015-01-09 15:27:07 +0800 | [diff] [blame] | 43 | #include "bcast.h" |
Richard Alpe | 49cc66e | 2016-03-04 17:04:42 +0100 | [diff] [blame] | 44 | #include "netlink.h" |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 45 | |
Patrick McHardy | a29a194 | 2013-04-17 06:18:28 +0000 | [diff] [blame] | 46 | #define MAX_ADDR_STR 60 |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 47 | |
Jon Paul Maloy | ef72a7e | 2013-12-10 20:45:40 -0800 | [diff] [blame] | 48 | static struct tipc_media * const media_info_array[] = { |
Jon Paul Maloy | 5702dba | 2013-12-10 20:45:39 -0800 | [diff] [blame] | 49 | ð_media_info, |
| 50 | #ifdef CONFIG_TIPC_MEDIA_IB |
| 51 | &ib_media_info, |
| 52 | #endif |
Erik Hugne | d0f9193 | 2015-03-05 10:23:49 +0100 | [diff] [blame] | 53 | #ifdef CONFIG_TIPC_MEDIA_UDP |
| 54 | &udp_media_info, |
| 55 | #endif |
Jon Paul Maloy | 5702dba | 2013-12-10 20:45:39 -0800 | [diff] [blame] | 56 | NULL |
| 57 | }; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 58 | |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 59 | static void bearer_disable(struct net *net, struct tipc_bearer *b); |
Allan Stephens | 3a777ff | 2011-04-21 13:58:26 -0500 | [diff] [blame] | 60 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 61 | /** |
Allan Stephens | 5c216e1 | 2011-10-18 11:34:29 -0400 | [diff] [blame] | 62 | * tipc_media_find - locates specified media object by name |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 63 | */ |
Paul Gortmaker | 358a0d1 | 2011-12-29 20:19:42 -0500 | [diff] [blame] | 64 | struct tipc_media *tipc_media_find(const char *name) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 65 | { |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 66 | u32 i; |
| 67 | |
Jon Paul Maloy | ef72a7e | 2013-12-10 20:45:40 -0800 | [diff] [blame] | 68 | for (i = 0; media_info_array[i] != NULL; i++) { |
| 69 | if (!strcmp(media_info_array[i]->name, name)) |
Jon Paul Maloy | 5702dba | 2013-12-10 20:45:39 -0800 | [diff] [blame] | 70 | break; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 71 | } |
Jon Paul Maloy | ef72a7e | 2013-12-10 20:45:40 -0800 | [diff] [blame] | 72 | return media_info_array[i]; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 73 | } |
| 74 | |
| 75 | /** |
Allan Stephens | c79be45 | 2011-10-06 16:40:55 -0400 | [diff] [blame] | 76 | * media_find_id - locates specified media object by type identifier |
| 77 | */ |
Paul Gortmaker | 358a0d1 | 2011-12-29 20:19:42 -0500 | [diff] [blame] | 78 | static struct tipc_media *media_find_id(u8 type) |
Allan Stephens | c79be45 | 2011-10-06 16:40:55 -0400 | [diff] [blame] | 79 | { |
| 80 | u32 i; |
| 81 | |
Jon Paul Maloy | ef72a7e | 2013-12-10 20:45:40 -0800 | [diff] [blame] | 82 | for (i = 0; media_info_array[i] != NULL; i++) { |
| 83 | if (media_info_array[i]->type_id == type) |
Jon Paul Maloy | 5702dba | 2013-12-10 20:45:39 -0800 | [diff] [blame] | 84 | break; |
Allan Stephens | c79be45 | 2011-10-06 16:40:55 -0400 | [diff] [blame] | 85 | } |
Jon Paul Maloy | ef72a7e | 2013-12-10 20:45:40 -0800 | [diff] [blame] | 86 | return media_info_array[i]; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 87 | } |
| 88 | |
| 89 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 90 | * tipc_media_addr_printf - record media address in print buffer |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 91 | */ |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 92 | void tipc_media_addr_printf(char *buf, int len, struct tipc_media_addr *a) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 93 | { |
Allan Stephens | c61b666 | 2011-10-07 11:31:49 -0400 | [diff] [blame] | 94 | char addr_str[MAX_ADDR_STR]; |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 95 | struct tipc_media *m; |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 96 | int ret; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 97 | |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 98 | m = media_find_id(a->media_id); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 99 | |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 100 | if (m && !m->addr2str(a, addr_str, sizeof(addr_str))) |
| 101 | ret = scnprintf(buf, len, "%s(%s)", m->name, addr_str); |
Allan Stephens | c61b666 | 2011-10-07 11:31:49 -0400 | [diff] [blame] | 102 | else { |
Allan Stephens | c61b666 | 2011-10-07 11:31:49 -0400 | [diff] [blame] | 103 | u32 i; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 104 | |
Richard Alpe | 941787b | 2015-02-09 09:50:19 +0100 | [diff] [blame] | 105 | ret = scnprintf(buf, len, "UNKNOWN(%u)", a->media_id); |
Allan Stephens | 3d749a6 | 2011-10-07 15:19:11 -0400 | [diff] [blame] | 106 | for (i = 0; i < sizeof(a->value); i++) |
Richard Alpe | 941787b | 2015-02-09 09:50:19 +0100 | [diff] [blame] | 107 | ret += scnprintf(buf - ret, len + ret, |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 108 | "-%02x", a->value[i]); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 109 | } |
| 110 | } |
| 111 | |
| 112 | /** |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 113 | * bearer_name_validate - validate & (optionally) deconstruct bearer name |
Ben Hutchings | 2c53040 | 2012-07-10 10:55:09 +0000 | [diff] [blame] | 114 | * @name: ptr to bearer name string |
| 115 | * @name_parts: ptr to area for bearer name components (or NULL if not needed) |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 116 | * |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 117 | * Returns 1 if bearer name is valid, otherwise 0. |
| 118 | */ |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 119 | static int bearer_name_validate(const char *name, |
Paul Gortmaker | f19765f | 2011-12-29 21:39:49 -0500 | [diff] [blame] | 120 | struct tipc_bearer_names *name_parts) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 121 | { |
| 122 | char name_copy[TIPC_MAX_BEARER_NAME]; |
| 123 | char *media_name; |
| 124 | char *if_name; |
| 125 | u32 media_len; |
| 126 | u32 if_len; |
| 127 | |
| 128 | /* copy bearer name & ensure length is OK */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 129 | name_copy[TIPC_MAX_BEARER_NAME - 1] = 0; |
| 130 | /* need above in case non-Posix strncpy() doesn't pad with nulls */ |
| 131 | strncpy(name_copy, name, TIPC_MAX_BEARER_NAME); |
| 132 | if (name_copy[TIPC_MAX_BEARER_NAME - 1] != 0) |
| 133 | return 0; |
| 134 | |
| 135 | /* ensure all component parts of bearer name are present */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 136 | media_name = name_copy; |
Allan Stephens | 2db9983 | 2010-12-31 18:59:33 +0000 | [diff] [blame] | 137 | if_name = strchr(media_name, ':'); |
| 138 | if (if_name == NULL) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 139 | return 0; |
| 140 | *(if_name++) = 0; |
| 141 | media_len = if_name - media_name; |
| 142 | if_len = strlen(if_name) + 1; |
| 143 | |
| 144 | /* validate component parts of bearer name */ |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 145 | if ((media_len <= 1) || (media_len > TIPC_MAX_MEDIA_NAME) || |
Ying Xue | fc07393 | 2012-08-16 12:09:08 +0000 | [diff] [blame] | 146 | (if_len <= 1) || (if_len > TIPC_MAX_IF_NAME)) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 147 | return 0; |
| 148 | |
| 149 | /* return bearer name components, if necessary */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 150 | if (name_parts) { |
| 151 | strcpy(name_parts->media_name, media_name); |
| 152 | strcpy(name_parts->if_name, if_name); |
| 153 | } |
| 154 | return 1; |
| 155 | } |
| 156 | |
| 157 | /** |
Allan Stephens | 5c216e1 | 2011-10-18 11:34:29 -0400 | [diff] [blame] | 158 | * tipc_bearer_find - locates bearer object with matching bearer name |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 159 | */ |
Ying Xue | 7f9f95d | 2015-01-09 15:27:06 +0800 | [diff] [blame] | 160 | struct tipc_bearer *tipc_bearer_find(struct net *net, const char *name) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 161 | { |
Ying Xue | 7f9f95d | 2015-01-09 15:27:06 +0800 | [diff] [blame] | 162 | struct tipc_net *tn = net_generic(net, tipc_net_id); |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 163 | struct tipc_bearer *b; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 164 | u32 i; |
| 165 | |
Ying Xue | 3874ccb | 2014-03-27 12:54:33 +0800 | [diff] [blame] | 166 | for (i = 0; i < MAX_BEARERS; i++) { |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 167 | b = rtnl_dereference(tn->bearer_list[i]); |
| 168 | if (b && (!strcmp(b->name, name))) |
| 169 | return b; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 170 | } |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 171 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 172 | } |
| 173 | |
Ying Xue | 7f9f95d | 2015-01-09 15:27:06 +0800 | [diff] [blame] | 174 | void tipc_bearer_add_dest(struct net *net, u32 bearer_id, u32 dest) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 175 | { |
Ying Xue | 7f9f95d | 2015-01-09 15:27:06 +0800 | [diff] [blame] | 176 | struct tipc_net *tn = net_generic(net, tipc_net_id); |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 177 | struct tipc_bearer *b; |
Ying Xue | 7a2f7d1 | 2014-04-21 10:55:46 +0800 | [diff] [blame] | 178 | |
| 179 | rcu_read_lock(); |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 180 | b = rcu_dereference_rtnl(tn->bearer_list[bearer_id]); |
| 181 | if (b) |
| 182 | tipc_disc_add_dest(b->link_req); |
Ying Xue | 7a2f7d1 | 2014-04-21 10:55:46 +0800 | [diff] [blame] | 183 | rcu_read_unlock(); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 184 | } |
| 185 | |
Ying Xue | 7f9f95d | 2015-01-09 15:27:06 +0800 | [diff] [blame] | 186 | void tipc_bearer_remove_dest(struct net *net, u32 bearer_id, u32 dest) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 187 | { |
Ying Xue | 7f9f95d | 2015-01-09 15:27:06 +0800 | [diff] [blame] | 188 | struct tipc_net *tn = net_generic(net, tipc_net_id); |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 189 | struct tipc_bearer *b; |
Ying Xue | 7a2f7d1 | 2014-04-21 10:55:46 +0800 | [diff] [blame] | 190 | |
| 191 | rcu_read_lock(); |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 192 | b = rcu_dereference_rtnl(tn->bearer_list[bearer_id]); |
| 193 | if (b) |
| 194 | tipc_disc_remove_dest(b->link_req); |
Ying Xue | 7a2f7d1 | 2014-04-21 10:55:46 +0800 | [diff] [blame] | 195 | rcu_read_unlock(); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 196 | } |
| 197 | |
Allan Stephens | b274f4a | 2010-05-11 14:30:16 +0000 | [diff] [blame] | 198 | /** |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 199 | * tipc_enable_bearer - enable bearer with the given name |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 200 | */ |
Richard Alpe | 9ab1546 | 2015-02-09 09:50:05 +0100 | [diff] [blame] | 201 | static int tipc_enable_bearer(struct net *net, const char *name, |
Erik Hugne | d0f9193 | 2015-03-05 10:23:49 +0100 | [diff] [blame] | 202 | u32 disc_domain, u32 priority, |
| 203 | struct nlattr *attr[]) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 204 | { |
Ying Xue | 7f9f95d | 2015-01-09 15:27:06 +0800 | [diff] [blame] | 205 | struct tipc_net *tn = net_generic(net, tipc_net_id); |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 206 | struct tipc_bearer *b; |
| 207 | struct tipc_media *m; |
Paul Gortmaker | f19765f | 2011-12-29 21:39:49 -0500 | [diff] [blame] | 208 | struct tipc_bearer_names b_names; |
Jon Paul Maloy | 4e801fa | 2016-04-07 10:09:13 -0400 | [diff] [blame] | 209 | struct sk_buff *skb; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 210 | char addr_string[16]; |
| 211 | u32 bearer_id; |
| 212 | u32 with_this_prio; |
| 213 | u32 i; |
| 214 | int res = -EINVAL; |
| 215 | |
Ying Xue | 3474753 | 2015-01-09 15:27:10 +0800 | [diff] [blame] | 216 | if (!tn->own_addr) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 217 | pr_warn("Bearer <%s> rejected, not supported in standalone mode\n", |
| 218 | name); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 219 | return -ENOPROTOOPT; |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 220 | } |
Paul Gortmaker | f19765f | 2011-12-29 21:39:49 -0500 | [diff] [blame] | 221 | if (!bearer_name_validate(name, &b_names)) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 222 | pr_warn("Bearer <%s> rejected, illegal name\n", name); |
Per Liden | 16cb4b3 | 2006-01-13 22:22:22 +0100 | [diff] [blame] | 223 | return -EINVAL; |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 224 | } |
Allan Stephens | 66e019a | 2011-04-20 16:24:07 -0500 | [diff] [blame] | 225 | if (tipc_addr_domain_valid(disc_domain) && |
Ying Xue | 3474753 | 2015-01-09 15:27:10 +0800 | [diff] [blame] | 226 | (disc_domain != tn->own_addr)) { |
| 227 | if (tipc_in_scope(disc_domain, tn->own_addr)) { |
Parthasarathy Bhuvaragan | 9ff26e9 | 2016-07-26 08:47:18 +0200 | [diff] [blame^] | 228 | disc_domain = tn->own_addr & TIPC_ZONE_CLUSTER_MASK; |
Allan Stephens | 66e019a | 2011-04-20 16:24:07 -0500 | [diff] [blame] | 229 | res = 0; /* accept any node in own cluster */ |
Ying Xue | 3474753 | 2015-01-09 15:27:10 +0800 | [diff] [blame] | 230 | } else if (in_own_cluster_exact(net, disc_domain)) |
Allan Stephens | 66e019a | 2011-04-20 16:24:07 -0500 | [diff] [blame] | 231 | res = 0; /* accept specified node in own cluster */ |
| 232 | } |
| 233 | if (res) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 234 | pr_warn("Bearer <%s> rejected, illegal discovery domain\n", |
| 235 | name); |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 236 | return -EINVAL; |
| 237 | } |
Allan Stephens | 9efde4a | 2011-11-03 13:15:10 -0400 | [diff] [blame] | 238 | if ((priority > TIPC_MAX_LINK_PRI) && |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 239 | (priority != TIPC_MEDIA_LINK_PRI)) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 240 | pr_warn("Bearer <%s> rejected, illegal priority\n", name); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 241 | return -EINVAL; |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 242 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 243 | |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 244 | m = tipc_media_find(b_names.media_name); |
| 245 | if (!m) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 246 | pr_warn("Bearer <%s> rejected, media <%s> not registered\n", |
| 247 | name, b_names.media_name); |
Ying Xue | 7216cd9 | 2014-04-21 10:55:48 +0800 | [diff] [blame] | 248 | return -EINVAL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 249 | } |
Per Liden | 16cb4b3 | 2006-01-13 22:22:22 +0100 | [diff] [blame] | 250 | |
| 251 | if (priority == TIPC_MEDIA_LINK_PRI) |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 252 | priority = m->priority; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 253 | |
| 254 | restart: |
| 255 | bearer_id = MAX_BEARERS; |
| 256 | with_this_prio = 1; |
| 257 | for (i = MAX_BEARERS; i-- != 0; ) { |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 258 | b = rtnl_dereference(tn->bearer_list[i]); |
| 259 | if (!b) { |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 260 | bearer_id = i; |
| 261 | continue; |
| 262 | } |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 263 | if (!strcmp(name, b->name)) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 264 | pr_warn("Bearer <%s> rejected, already enabled\n", |
| 265 | name); |
Ying Xue | 7216cd9 | 2014-04-21 10:55:48 +0800 | [diff] [blame] | 266 | return -EINVAL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 267 | } |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 268 | if ((b->priority == priority) && |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 269 | (++with_this_prio > 2)) { |
| 270 | if (priority-- == 0) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 271 | pr_warn("Bearer <%s> rejected, duplicate priority\n", |
| 272 | name); |
Ying Xue | 7216cd9 | 2014-04-21 10:55:48 +0800 | [diff] [blame] | 273 | return -EINVAL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 274 | } |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 275 | pr_warn("Bearer <%s> priority adjustment required %u->%u\n", |
| 276 | name, priority + 1, priority); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 277 | goto restart; |
| 278 | } |
| 279 | } |
| 280 | if (bearer_id >= MAX_BEARERS) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 281 | pr_warn("Bearer <%s> rejected, bearer limit reached (%u)\n", |
| 282 | name, MAX_BEARERS); |
Ying Xue | 7216cd9 | 2014-04-21 10:55:48 +0800 | [diff] [blame] | 283 | return -EINVAL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 284 | } |
| 285 | |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 286 | b = kzalloc(sizeof(*b), GFP_ATOMIC); |
| 287 | if (!b) |
Ying Xue | 7216cd9 | 2014-04-21 10:55:48 +0800 | [diff] [blame] | 288 | return -ENOMEM; |
| 289 | |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 290 | strcpy(b->name, name); |
| 291 | b->media = m; |
| 292 | res = m->enable_media(net, b, attr); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 293 | if (res) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 294 | pr_warn("Bearer <%s> rejected, enable failure (%d)\n", |
| 295 | name, -res); |
Ying Xue | 7216cd9 | 2014-04-21 10:55:48 +0800 | [diff] [blame] | 296 | return -EINVAL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 297 | } |
| 298 | |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 299 | b->identity = bearer_id; |
| 300 | b->tolerance = m->tolerance; |
| 301 | b->window = m->window; |
| 302 | b->domain = disc_domain; |
| 303 | b->net_plane = bearer_id + 'A'; |
| 304 | b->priority = priority; |
Allan Stephens | 3a777ff | 2011-04-21 13:58:26 -0500 | [diff] [blame] | 305 | |
Jon Paul Maloy | 4e801fa | 2016-04-07 10:09:13 -0400 | [diff] [blame] | 306 | res = tipc_disc_create(net, b, &b->bcast_addr, &skb); |
Allan Stephens | 3a777ff | 2011-04-21 13:58:26 -0500 | [diff] [blame] | 307 | if (res) { |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 308 | bearer_disable(net, b); |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 309 | pr_warn("Bearer <%s> rejected, discovery object creation failed\n", |
| 310 | name); |
Ying Xue | 7216cd9 | 2014-04-21 10:55:48 +0800 | [diff] [blame] | 311 | return -EINVAL; |
Allan Stephens | 3a777ff | 2011-04-21 13:58:26 -0500 | [diff] [blame] | 312 | } |
Ying Xue | 3874ccb | 2014-03-27 12:54:33 +0800 | [diff] [blame] | 313 | |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 314 | rcu_assign_pointer(tn->bearer_list[bearer_id], b); |
Jon Paul Maloy | 4e801fa | 2016-04-07 10:09:13 -0400 | [diff] [blame] | 315 | if (skb) |
| 316 | tipc_bearer_xmit_skb(net, bearer_id, skb, &b->bcast_addr); |
Jon Paul Maloy | 35c55c9 | 2016-06-13 20:46:22 -0400 | [diff] [blame] | 317 | |
| 318 | if (tipc_mon_create(net, bearer_id)) |
| 319 | return -ENOMEM; |
| 320 | |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 321 | pr_info("Enabled bearer <%s>, discovery domain %s, priority %u\n", |
| 322 | name, |
| 323 | tipc_addr_string_fill(addr_string, disc_domain), priority); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 324 | return res; |
| 325 | } |
| 326 | |
| 327 | /** |
Erik Hugne | 512137e | 2013-12-06 10:08:00 -0500 | [diff] [blame] | 328 | * tipc_reset_bearer - Reset all links established over this bearer |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 329 | */ |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 330 | static int tipc_reset_bearer(struct net *net, struct tipc_bearer *b) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 331 | { |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 332 | pr_info("Resetting bearer <%s>\n", b->name); |
| 333 | tipc_node_delete_links(net, b->identity); |
| 334 | tipc_disc_reset(net, b); |
Allan Stephens | 0e35fd5 | 2008-07-14 22:44:01 -0700 | [diff] [blame] | 335 | return 0; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 336 | } |
| 337 | |
Jon Paul Maloy | 1fc07f3 | 2016-07-11 16:08:37 -0400 | [diff] [blame] | 338 | /* tipc_bearer_reset_all - reset all links on all bearers |
| 339 | */ |
| 340 | void tipc_bearer_reset_all(struct net *net) |
| 341 | { |
| 342 | struct tipc_net *tn = tipc_net(net); |
| 343 | struct tipc_bearer *b; |
| 344 | int i; |
| 345 | |
| 346 | for (i = 0; i < MAX_BEARERS; i++) { |
| 347 | b = rcu_dereference_rtnl(tn->bearer_list[i]); |
| 348 | if (b) |
| 349 | tipc_reset_bearer(net, b); |
| 350 | } |
| 351 | } |
| 352 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 353 | /** |
Paul Gortmaker | 617d3c7 | 2012-04-30 15:29:02 -0400 | [diff] [blame] | 354 | * bearer_disable |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 355 | * |
Ying Xue | 7216cd9 | 2014-04-21 10:55:48 +0800 | [diff] [blame] | 356 | * Note: This routine assumes caller holds RTNL lock. |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 357 | */ |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 358 | static void bearer_disable(struct net *net, struct tipc_bearer *b) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 359 | { |
Jon Paul Maloy | 5b7066c | 2016-04-07 10:09:14 -0400 | [diff] [blame] | 360 | struct tipc_net *tn = tipc_net(net); |
| 361 | int bearer_id = b->identity; |
Ying Xue | 3874ccb | 2014-03-27 12:54:33 +0800 | [diff] [blame] | 362 | |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 363 | pr_info("Disabling bearer <%s>\n", b->name); |
| 364 | b->media->disable_media(b); |
Jon Paul Maloy | 5b7066c | 2016-04-07 10:09:14 -0400 | [diff] [blame] | 365 | tipc_node_delete_links(net, bearer_id); |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 366 | RCU_INIT_POINTER(b->media_ptr, NULL); |
| 367 | if (b->link_req) |
| 368 | tipc_disc_delete(b->link_req); |
Jon Paul Maloy | 5b7066c | 2016-04-07 10:09:14 -0400 | [diff] [blame] | 369 | RCU_INIT_POINTER(tn->bearer_list[bearer_id], NULL); |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 370 | kfree_rcu(b, rcu); |
Jon Paul Maloy | 35c55c9 | 2016-06-13 20:46:22 -0400 | [diff] [blame] | 371 | tipc_mon_delete(net, bearer_id); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 372 | } |
| 373 | |
Erik Hugne | d0f9193 | 2015-03-05 10:23:49 +0100 | [diff] [blame] | 374 | int tipc_enable_l2_media(struct net *net, struct tipc_bearer *b, |
| 375 | struct nlattr *attr[]) |
Ying Xue | e4d050c | 2013-12-10 20:45:43 -0800 | [diff] [blame] | 376 | { |
| 377 | struct net_device *dev; |
| 378 | char *driver_name = strchr((const char *)b->name, ':') + 1; |
| 379 | |
| 380 | /* Find device with specified name */ |
Ying Xue | 7f9f95d | 2015-01-09 15:27:06 +0800 | [diff] [blame] | 381 | dev = dev_get_by_name(net, driver_name); |
Ying Xue | e4d050c | 2013-12-10 20:45:43 -0800 | [diff] [blame] | 382 | if (!dev) |
| 383 | return -ENODEV; |
| 384 | |
Jon Paul Maloy | 38504c2 | 2014-05-14 05:39:13 -0400 | [diff] [blame] | 385 | /* Associate TIPC bearer with L2 bearer */ |
Ying Xue | 2231c5a | 2014-04-21 10:55:47 +0800 | [diff] [blame] | 386 | rcu_assign_pointer(b->media_ptr, dev); |
Jon Paul Maloy | 38504c2 | 2014-05-14 05:39:13 -0400 | [diff] [blame] | 387 | memset(&b->bcast_addr, 0, sizeof(b->bcast_addr)); |
Ying Xue | e4d050c | 2013-12-10 20:45:43 -0800 | [diff] [blame] | 388 | memcpy(b->bcast_addr.value, dev->broadcast, b->media->hwaddr_len); |
| 389 | b->bcast_addr.media_id = b->media->type_id; |
| 390 | b->bcast_addr.broadcast = 1; |
| 391 | b->mtu = dev->mtu; |
Jon Paul Maloy | 38504c2 | 2014-05-14 05:39:13 -0400 | [diff] [blame] | 392 | b->media->raw2addr(b, &b->addr, (char *)dev->dev_addr); |
Ying Xue | e4d050c | 2013-12-10 20:45:43 -0800 | [diff] [blame] | 393 | rcu_assign_pointer(dev->tipc_ptr, b); |
| 394 | return 0; |
| 395 | } |
| 396 | |
Jon Paul Maloy | 38504c2 | 2014-05-14 05:39:13 -0400 | [diff] [blame] | 397 | /* tipc_disable_l2_media - detach TIPC bearer from an L2 interface |
Ying Xue | e4d050c | 2013-12-10 20:45:43 -0800 | [diff] [blame] | 398 | * |
Jon Paul Maloy | 282b3a0 | 2015-10-15 14:52:45 -0400 | [diff] [blame] | 399 | * Mark L2 bearer as inactive so that incoming buffers are thrown away |
Ying Xue | e4d050c | 2013-12-10 20:45:43 -0800 | [diff] [blame] | 400 | */ |
| 401 | void tipc_disable_l2_media(struct tipc_bearer *b) |
| 402 | { |
Ying Xue | 2231c5a | 2014-04-21 10:55:47 +0800 | [diff] [blame] | 403 | struct net_device *dev; |
| 404 | |
| 405 | dev = (struct net_device *)rtnl_dereference(b->media_ptr); |
Ying Xue | e4d050c | 2013-12-10 20:45:43 -0800 | [diff] [blame] | 406 | RCU_INIT_POINTER(dev->tipc_ptr, NULL); |
Ying Xue | f1c8d8c | 2014-04-21 10:55:49 +0800 | [diff] [blame] | 407 | synchronize_net(); |
Ying Xue | e4d050c | 2013-12-10 20:45:43 -0800 | [diff] [blame] | 408 | dev_put(dev); |
| 409 | } |
| 410 | |
| 411 | /** |
Jon Paul Maloy | 38504c2 | 2014-05-14 05:39:13 -0400 | [diff] [blame] | 412 | * tipc_l2_send_msg - send a TIPC packet out over an L2 interface |
Jon Paul Maloy | 5b7066c | 2016-04-07 10:09:14 -0400 | [diff] [blame] | 413 | * @skb: the packet to be sent |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 414 | * @b: the bearer through which the packet is to be sent |
Ying Xue | e4d050c | 2013-12-10 20:45:43 -0800 | [diff] [blame] | 415 | * @dest: peer destination address |
| 416 | */ |
Jon Paul Maloy | 7214bcf | 2015-10-22 08:51:45 -0400 | [diff] [blame] | 417 | int tipc_l2_send_msg(struct net *net, struct sk_buff *skb, |
Ying Xue | 1da4656 | 2015-01-09 15:27:07 +0800 | [diff] [blame] | 418 | struct tipc_bearer *b, struct tipc_media_addr *dest) |
Ying Xue | e4d050c | 2013-12-10 20:45:43 -0800 | [diff] [blame] | 419 | { |
Ying Xue | 2231c5a | 2014-04-21 10:55:47 +0800 | [diff] [blame] | 420 | struct net_device *dev; |
Ying Xue | e4d050c | 2013-12-10 20:45:43 -0800 | [diff] [blame] | 421 | int delta; |
Jon Paul Maloy | 5b7066c | 2016-04-07 10:09:14 -0400 | [diff] [blame] | 422 | void *tipc_ptr; |
Ying Xue | 2231c5a | 2014-04-21 10:55:47 +0800 | [diff] [blame] | 423 | |
| 424 | dev = (struct net_device *)rcu_dereference_rtnl(b->media_ptr); |
| 425 | if (!dev) |
| 426 | return 0; |
Ying Xue | e4d050c | 2013-12-10 20:45:43 -0800 | [diff] [blame] | 427 | |
Jon Paul Maloy | 5b7066c | 2016-04-07 10:09:14 -0400 | [diff] [blame] | 428 | /* Send RESET message even if bearer is detached from device */ |
Ying Xue | 66d95b6 | 2016-06-15 14:10:57 +0800 | [diff] [blame] | 429 | tipc_ptr = rcu_dereference_rtnl(dev->tipc_ptr); |
Jon Paul Maloy | 5b7066c | 2016-04-07 10:09:14 -0400 | [diff] [blame] | 430 | if (unlikely(!tipc_ptr && !msg_is_reset(buf_msg(skb)))) |
| 431 | goto drop; |
| 432 | |
Jon Paul Maloy | 7214bcf | 2015-10-22 08:51:45 -0400 | [diff] [blame] | 433 | delta = dev->hard_header_len - skb_headroom(skb); |
Ying Xue | e4d050c | 2013-12-10 20:45:43 -0800 | [diff] [blame] | 434 | if ((delta > 0) && |
Jon Paul Maloy | 5b7066c | 2016-04-07 10:09:14 -0400 | [diff] [blame] | 435 | pskb_expand_head(skb, SKB_DATA_ALIGN(delta), 0, GFP_ATOMIC)) |
| 436 | goto drop; |
Ying Xue | e4d050c | 2013-12-10 20:45:43 -0800 | [diff] [blame] | 437 | |
Jon Paul Maloy | 7214bcf | 2015-10-22 08:51:45 -0400 | [diff] [blame] | 438 | skb_reset_network_header(skb); |
| 439 | skb->dev = dev; |
| 440 | skb->protocol = htons(ETH_P_TIPC); |
| 441 | dev_hard_header(skb, dev, ETH_P_TIPC, dest->value, |
| 442 | dev->dev_addr, skb->len); |
| 443 | dev_queue_xmit(skb); |
Ying Xue | e4d050c | 2013-12-10 20:45:43 -0800 | [diff] [blame] | 444 | return 0; |
Jon Paul Maloy | 5b7066c | 2016-04-07 10:09:14 -0400 | [diff] [blame] | 445 | drop: |
| 446 | kfree_skb(skb); |
| 447 | return 0; |
Ying Xue | e4d050c | 2013-12-10 20:45:43 -0800 | [diff] [blame] | 448 | } |
| 449 | |
Jon Paul Maloy | 959e178 | 2015-10-22 08:51:43 -0400 | [diff] [blame] | 450 | int tipc_bearer_mtu(struct net *net, u32 bearer_id) |
| 451 | { |
| 452 | int mtu = 0; |
| 453 | struct tipc_bearer *b; |
| 454 | |
| 455 | rcu_read_lock(); |
| 456 | b = rcu_dereference_rtnl(tipc_net(net)->bearer_list[bearer_id]); |
| 457 | if (b) |
| 458 | mtu = b->mtu; |
| 459 | rcu_read_unlock(); |
| 460 | return mtu; |
| 461 | } |
| 462 | |
Jon Paul Maloy | 60852d6 | 2015-10-22 08:51:44 -0400 | [diff] [blame] | 463 | /* tipc_bearer_xmit_skb - sends buffer to destination over bearer |
| 464 | */ |
| 465 | void tipc_bearer_xmit_skb(struct net *net, u32 bearer_id, |
| 466 | struct sk_buff *skb, |
| 467 | struct tipc_media_addr *dest) |
| 468 | { |
| 469 | struct tipc_net *tn = tipc_net(net); |
| 470 | struct tipc_bearer *b; |
| 471 | |
| 472 | rcu_read_lock(); |
| 473 | b = rcu_dereference_rtnl(tn->bearer_list[bearer_id]); |
| 474 | if (likely(b)) |
| 475 | b->media->send_msg(net, skb, b, dest); |
Jon Paul Maloy | 4e801fa | 2016-04-07 10:09:13 -0400 | [diff] [blame] | 476 | else |
| 477 | kfree_skb(skb); |
Jon Paul Maloy | 60852d6 | 2015-10-22 08:51:44 -0400 | [diff] [blame] | 478 | rcu_read_unlock(); |
Jon Paul Maloy | 60852d6 | 2015-10-22 08:51:44 -0400 | [diff] [blame] | 479 | } |
| 480 | |
Jon Paul Maloy | af9b028 | 2015-07-16 16:54:24 -0400 | [diff] [blame] | 481 | /* tipc_bearer_xmit() -send buffer to destination over bearer |
| 482 | */ |
| 483 | void tipc_bearer_xmit(struct net *net, u32 bearer_id, |
| 484 | struct sk_buff_head *xmitq, |
| 485 | struct tipc_media_addr *dst) |
| 486 | { |
| 487 | struct tipc_net *tn = net_generic(net, tipc_net_id); |
| 488 | struct tipc_bearer *b; |
| 489 | struct sk_buff *skb, *tmp; |
| 490 | |
| 491 | if (skb_queue_empty(xmitq)) |
| 492 | return; |
| 493 | |
| 494 | rcu_read_lock(); |
| 495 | b = rcu_dereference_rtnl(tn->bearer_list[bearer_id]); |
Jon Paul Maloy | 4e801fa | 2016-04-07 10:09:13 -0400 | [diff] [blame] | 496 | if (unlikely(!b)) |
| 497 | __skb_queue_purge(xmitq); |
| 498 | skb_queue_walk_safe(xmitq, skb, tmp) { |
| 499 | __skb_dequeue(xmitq); |
| 500 | b->media->send_msg(net, skb, b, dst); |
Jon Paul Maloy | af9b028 | 2015-07-16 16:54:24 -0400 | [diff] [blame] | 501 | } |
| 502 | rcu_read_unlock(); |
| 503 | } |
| 504 | |
Jon Paul Maloy | b06b281 | 2015-10-22 08:51:42 -0400 | [diff] [blame] | 505 | /* tipc_bearer_bc_xmit() - broadcast buffers to all destinations |
| 506 | */ |
| 507 | void tipc_bearer_bc_xmit(struct net *net, u32 bearer_id, |
| 508 | struct sk_buff_head *xmitq) |
| 509 | { |
| 510 | struct tipc_net *tn = tipc_net(net); |
| 511 | int net_id = tn->net_id; |
| 512 | struct tipc_bearer *b; |
| 513 | struct sk_buff *skb, *tmp; |
| 514 | struct tipc_msg *hdr; |
| 515 | |
| 516 | rcu_read_lock(); |
| 517 | b = rcu_dereference_rtnl(tn->bearer_list[bearer_id]); |
Jon Paul Maloy | 4e801fa | 2016-04-07 10:09:13 -0400 | [diff] [blame] | 518 | if (unlikely(!b)) |
| 519 | __skb_queue_purge(xmitq); |
| 520 | skb_queue_walk_safe(xmitq, skb, tmp) { |
| 521 | hdr = buf_msg(skb); |
| 522 | msg_set_non_seq(hdr, 1); |
| 523 | msg_set_mc_netid(hdr, net_id); |
| 524 | __skb_dequeue(xmitq); |
| 525 | b->media->send_msg(net, skb, b, &b->bcast_addr); |
Jon Paul Maloy | b06b281 | 2015-10-22 08:51:42 -0400 | [diff] [blame] | 526 | } |
| 527 | rcu_read_unlock(); |
| 528 | } |
| 529 | |
Ying Xue | 6e967ad | 2013-12-10 20:45:42 -0800 | [diff] [blame] | 530 | /** |
| 531 | * tipc_l2_rcv_msg - handle incoming TIPC message from an interface |
| 532 | * @buf: the received packet |
| 533 | * @dev: the net device that the packet was received on |
| 534 | * @pt: the packet_type structure which was used to register this handler |
| 535 | * @orig_dev: the original receive net device in case the device is a bond |
| 536 | * |
| 537 | * Accept only packets explicitly sent to this node, or broadcast packets; |
| 538 | * ignores packets sent using interface multicast, and traffic sent to other |
| 539 | * nodes (which can happen if interface is running in promiscuous mode). |
| 540 | */ |
Jon Paul Maloy | 4e801fa | 2016-04-07 10:09:13 -0400 | [diff] [blame] | 541 | static int tipc_l2_rcv_msg(struct sk_buff *skb, struct net_device *dev, |
Ying Xue | 6e967ad | 2013-12-10 20:45:42 -0800 | [diff] [blame] | 542 | struct packet_type *pt, struct net_device *orig_dev) |
| 543 | { |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 544 | struct tipc_bearer *b; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 545 | |
Ying Xue | 6e967ad | 2013-12-10 20:45:42 -0800 | [diff] [blame] | 546 | rcu_read_lock(); |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 547 | b = rcu_dereference_rtnl(dev->tipc_ptr); |
Jon Paul Maloy | 4e801fa | 2016-04-07 10:09:13 -0400 | [diff] [blame] | 548 | if (likely(b && (skb->pkt_type <= PACKET_BROADCAST))) { |
| 549 | skb->next = NULL; |
| 550 | tipc_rcv(dev_net(dev), skb, b); |
| 551 | rcu_read_unlock(); |
| 552 | return NET_RX_SUCCESS; |
Ying Xue | 6e967ad | 2013-12-10 20:45:42 -0800 | [diff] [blame] | 553 | } |
| 554 | rcu_read_unlock(); |
Jon Paul Maloy | 4e801fa | 2016-04-07 10:09:13 -0400 | [diff] [blame] | 555 | kfree_skb(skb); |
Ying Xue | 6e967ad | 2013-12-10 20:45:42 -0800 | [diff] [blame] | 556 | return NET_RX_DROP; |
| 557 | } |
| 558 | |
| 559 | /** |
| 560 | * tipc_l2_device_event - handle device events from network device |
| 561 | * @nb: the context of the notification |
| 562 | * @evt: the type of event |
| 563 | * @ptr: the net device that the event was on |
| 564 | * |
| 565 | * This function is called by the Ethernet driver in case of link |
| 566 | * change event. |
| 567 | */ |
| 568 | static int tipc_l2_device_event(struct notifier_block *nb, unsigned long evt, |
| 569 | void *ptr) |
| 570 | { |
Ying Xue | 6e967ad | 2013-12-10 20:45:42 -0800 | [diff] [blame] | 571 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
Ying Xue | c93d3ba | 2015-01-09 15:27:04 +0800 | [diff] [blame] | 572 | struct net *net = dev_net(dev); |
Jon Paul Maloy | 5b7066c | 2016-04-07 10:09:14 -0400 | [diff] [blame] | 573 | struct tipc_net *tn = tipc_net(net); |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 574 | struct tipc_bearer *b; |
Jon Paul Maloy | 5b7066c | 2016-04-07 10:09:14 -0400 | [diff] [blame] | 575 | int i; |
Ying Xue | 6e967ad | 2013-12-10 20:45:42 -0800 | [diff] [blame] | 576 | |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 577 | b = rtnl_dereference(dev->tipc_ptr); |
Jon Paul Maloy | 5b7066c | 2016-04-07 10:09:14 -0400 | [diff] [blame] | 578 | if (!b) { |
| 579 | for (i = 0; i < MAX_BEARERS; b = NULL, i++) { |
| 580 | b = rtnl_dereference(tn->bearer_list[i]); |
| 581 | if (b && (b->media_ptr == dev)) |
| 582 | break; |
| 583 | } |
| 584 | } |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 585 | if (!b) |
Ying Xue | 6e967ad | 2013-12-10 20:45:42 -0800 | [diff] [blame] | 586 | return NOTIFY_DONE; |
Ying Xue | 6e967ad | 2013-12-10 20:45:42 -0800 | [diff] [blame] | 587 | |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 588 | b->mtu = dev->mtu; |
Ying Xue | 6e967ad | 2013-12-10 20:45:42 -0800 | [diff] [blame] | 589 | |
| 590 | switch (evt) { |
| 591 | case NETDEV_CHANGE: |
| 592 | if (netif_carrier_ok(dev)) |
| 593 | break; |
Jon Paul Maloy | 5b7066c | 2016-04-07 10:09:14 -0400 | [diff] [blame] | 594 | case NETDEV_UP: |
| 595 | rcu_assign_pointer(dev->tipc_ptr, b); |
| 596 | break; |
Jon Paul Maloy | 282b3a0 | 2015-10-15 14:52:45 -0400 | [diff] [blame] | 597 | case NETDEV_GOING_DOWN: |
Jon Paul Maloy | 5b7066c | 2016-04-07 10:09:14 -0400 | [diff] [blame] | 598 | RCU_INIT_POINTER(dev->tipc_ptr, NULL); |
| 599 | synchronize_net(); |
| 600 | tipc_reset_bearer(net, b); |
| 601 | break; |
Ying Xue | 6e967ad | 2013-12-10 20:45:42 -0800 | [diff] [blame] | 602 | case NETDEV_CHANGEMTU: |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 603 | tipc_reset_bearer(net, b); |
Erik Hugne | a21a584 | 2014-03-28 10:32:08 +0100 | [diff] [blame] | 604 | break; |
Ying Xue | 6e967ad | 2013-12-10 20:45:42 -0800 | [diff] [blame] | 605 | case NETDEV_CHANGEADDR: |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 606 | b->media->raw2addr(b, &b->addr, |
Jon Paul Maloy | 5b7066c | 2016-04-07 10:09:14 -0400 | [diff] [blame] | 607 | (char *)dev->dev_addr); |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 608 | tipc_reset_bearer(net, b); |
Ying Xue | 6e967ad | 2013-12-10 20:45:42 -0800 | [diff] [blame] | 609 | break; |
| 610 | case NETDEV_UNREGISTER: |
| 611 | case NETDEV_CHANGENAME: |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 612 | bearer_disable(dev_net(dev), b); |
Ying Xue | 6e967ad | 2013-12-10 20:45:42 -0800 | [diff] [blame] | 613 | break; |
| 614 | } |
Ying Xue | 6e967ad | 2013-12-10 20:45:42 -0800 | [diff] [blame] | 615 | return NOTIFY_OK; |
| 616 | } |
| 617 | |
| 618 | static struct packet_type tipc_packet_type __read_mostly = { |
Joe Perches | 184593c | 2014-03-12 10:04:20 -0700 | [diff] [blame] | 619 | .type = htons(ETH_P_TIPC), |
Ying Xue | 6e967ad | 2013-12-10 20:45:42 -0800 | [diff] [blame] | 620 | .func = tipc_l2_rcv_msg, |
| 621 | }; |
| 622 | |
| 623 | static struct notifier_block notifier = { |
| 624 | .notifier_call = tipc_l2_device_event, |
| 625 | .priority = 0, |
| 626 | }; |
| 627 | |
| 628 | int tipc_bearer_setup(void) |
| 629 | { |
Ying Xue | 970122f | 2014-02-20 11:32:50 +0800 | [diff] [blame] | 630 | int err; |
| 631 | |
| 632 | err = register_netdevice_notifier(¬ifier); |
| 633 | if (err) |
| 634 | return err; |
Ying Xue | 6e967ad | 2013-12-10 20:45:42 -0800 | [diff] [blame] | 635 | dev_add_pack(&tipc_packet_type); |
Ying Xue | 970122f | 2014-02-20 11:32:50 +0800 | [diff] [blame] | 636 | return 0; |
Ying Xue | 6e967ad | 2013-12-10 20:45:42 -0800 | [diff] [blame] | 637 | } |
| 638 | |
| 639 | void tipc_bearer_cleanup(void) |
| 640 | { |
| 641 | unregister_netdevice_notifier(¬ifier); |
| 642 | dev_remove_pack(&tipc_packet_type); |
| 643 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 644 | |
Ying Xue | f2f9800 | 2015-01-09 15:27:05 +0800 | [diff] [blame] | 645 | void tipc_bearer_stop(struct net *net) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 646 | { |
Ying Xue | 7f9f95d | 2015-01-09 15:27:06 +0800 | [diff] [blame] | 647 | struct tipc_net *tn = net_generic(net, tipc_net_id); |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 648 | struct tipc_bearer *b; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 649 | u32 i; |
| 650 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 651 | for (i = 0; i < MAX_BEARERS; i++) { |
Jon Paul Maloy | 1a90632 | 2015-11-19 14:30:47 -0500 | [diff] [blame] | 652 | b = rtnl_dereference(tn->bearer_list[i]); |
| 653 | if (b) { |
| 654 | bearer_disable(net, b); |
Ying Xue | 7f9f95d | 2015-01-09 15:27:06 +0800 | [diff] [blame] | 655 | tn->bearer_list[i] = NULL; |
Ying Xue | 3874ccb | 2014-03-27 12:54:33 +0800 | [diff] [blame] | 656 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 657 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 658 | } |
Richard Alpe | 0655f6a | 2014-11-20 10:29:07 +0100 | [diff] [blame] | 659 | |
Richard Alpe | 35b9dd7 | 2014-11-20 10:29:08 +0100 | [diff] [blame] | 660 | /* Caller should hold rtnl_lock to protect the bearer */ |
Richard Alpe | d818280 | 2014-11-24 11:10:29 +0100 | [diff] [blame] | 661 | static int __tipc_nl_add_bearer(struct tipc_nl_msg *msg, |
Nicolas Dichtel | f2f6739 | 2015-04-28 18:33:50 +0200 | [diff] [blame] | 662 | struct tipc_bearer *bearer, int nlflags) |
Richard Alpe | 35b9dd7 | 2014-11-20 10:29:08 +0100 | [diff] [blame] | 663 | { |
| 664 | void *hdr; |
| 665 | struct nlattr *attrs; |
| 666 | struct nlattr *prop; |
| 667 | |
Richard Alpe | bfb3e5d | 2015-02-09 09:50:03 +0100 | [diff] [blame] | 668 | hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_family, |
Nicolas Dichtel | f2f6739 | 2015-04-28 18:33:50 +0200 | [diff] [blame] | 669 | nlflags, TIPC_NL_BEARER_GET); |
Richard Alpe | 35b9dd7 | 2014-11-20 10:29:08 +0100 | [diff] [blame] | 670 | if (!hdr) |
| 671 | return -EMSGSIZE; |
| 672 | |
| 673 | attrs = nla_nest_start(msg->skb, TIPC_NLA_BEARER); |
| 674 | if (!attrs) |
| 675 | goto msg_full; |
| 676 | |
| 677 | if (nla_put_string(msg->skb, TIPC_NLA_BEARER_NAME, bearer->name)) |
| 678 | goto attr_msg_full; |
| 679 | |
| 680 | prop = nla_nest_start(msg->skb, TIPC_NLA_BEARER_PROP); |
| 681 | if (!prop) |
| 682 | goto prop_msg_full; |
| 683 | if (nla_put_u32(msg->skb, TIPC_NLA_PROP_PRIO, bearer->priority)) |
| 684 | goto prop_msg_full; |
| 685 | if (nla_put_u32(msg->skb, TIPC_NLA_PROP_TOL, bearer->tolerance)) |
| 686 | goto prop_msg_full; |
| 687 | if (nla_put_u32(msg->skb, TIPC_NLA_PROP_WIN, bearer->window)) |
| 688 | goto prop_msg_full; |
| 689 | |
| 690 | nla_nest_end(msg->skb, prop); |
| 691 | nla_nest_end(msg->skb, attrs); |
| 692 | genlmsg_end(msg->skb, hdr); |
| 693 | |
| 694 | return 0; |
| 695 | |
| 696 | prop_msg_full: |
| 697 | nla_nest_cancel(msg->skb, prop); |
| 698 | attr_msg_full: |
| 699 | nla_nest_cancel(msg->skb, attrs); |
| 700 | msg_full: |
| 701 | genlmsg_cancel(msg->skb, hdr); |
| 702 | |
| 703 | return -EMSGSIZE; |
| 704 | } |
| 705 | |
| 706 | int tipc_nl_bearer_dump(struct sk_buff *skb, struct netlink_callback *cb) |
| 707 | { |
| 708 | int err; |
| 709 | int i = cb->args[0]; |
| 710 | struct tipc_bearer *bearer; |
| 711 | struct tipc_nl_msg msg; |
Ying Xue | 7f9f95d | 2015-01-09 15:27:06 +0800 | [diff] [blame] | 712 | struct net *net = sock_net(skb->sk); |
| 713 | struct tipc_net *tn = net_generic(net, tipc_net_id); |
Richard Alpe | 35b9dd7 | 2014-11-20 10:29:08 +0100 | [diff] [blame] | 714 | |
| 715 | if (i == MAX_BEARERS) |
| 716 | return 0; |
| 717 | |
| 718 | msg.skb = skb; |
| 719 | msg.portid = NETLINK_CB(cb->skb).portid; |
| 720 | msg.seq = cb->nlh->nlmsg_seq; |
| 721 | |
| 722 | rtnl_lock(); |
| 723 | for (i = 0; i < MAX_BEARERS; i++) { |
Ying Xue | 7f9f95d | 2015-01-09 15:27:06 +0800 | [diff] [blame] | 724 | bearer = rtnl_dereference(tn->bearer_list[i]); |
Richard Alpe | 35b9dd7 | 2014-11-20 10:29:08 +0100 | [diff] [blame] | 725 | if (!bearer) |
| 726 | continue; |
| 727 | |
Nicolas Dichtel | f2f6739 | 2015-04-28 18:33:50 +0200 | [diff] [blame] | 728 | err = __tipc_nl_add_bearer(&msg, bearer, NLM_F_MULTI); |
Richard Alpe | 35b9dd7 | 2014-11-20 10:29:08 +0100 | [diff] [blame] | 729 | if (err) |
| 730 | break; |
| 731 | } |
| 732 | rtnl_unlock(); |
| 733 | |
| 734 | cb->args[0] = i; |
| 735 | return skb->len; |
| 736 | } |
| 737 | |
| 738 | int tipc_nl_bearer_get(struct sk_buff *skb, struct genl_info *info) |
| 739 | { |
| 740 | int err; |
| 741 | char *name; |
| 742 | struct sk_buff *rep; |
| 743 | struct tipc_bearer *bearer; |
| 744 | struct tipc_nl_msg msg; |
| 745 | struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1]; |
Ying Xue | 7f9f95d | 2015-01-09 15:27:06 +0800 | [diff] [blame] | 746 | struct net *net = genl_info_net(info); |
Richard Alpe | 35b9dd7 | 2014-11-20 10:29:08 +0100 | [diff] [blame] | 747 | |
| 748 | if (!info->attrs[TIPC_NLA_BEARER]) |
| 749 | return -EINVAL; |
| 750 | |
| 751 | err = nla_parse_nested(attrs, TIPC_NLA_BEARER_MAX, |
| 752 | info->attrs[TIPC_NLA_BEARER], |
| 753 | tipc_nl_bearer_policy); |
| 754 | if (err) |
| 755 | return err; |
| 756 | |
| 757 | if (!attrs[TIPC_NLA_BEARER_NAME]) |
| 758 | return -EINVAL; |
| 759 | name = nla_data(attrs[TIPC_NLA_BEARER_NAME]); |
| 760 | |
| 761 | rep = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); |
| 762 | if (!rep) |
| 763 | return -ENOMEM; |
| 764 | |
| 765 | msg.skb = rep; |
| 766 | msg.portid = info->snd_portid; |
| 767 | msg.seq = info->snd_seq; |
| 768 | |
| 769 | rtnl_lock(); |
Ying Xue | 7f9f95d | 2015-01-09 15:27:06 +0800 | [diff] [blame] | 770 | bearer = tipc_bearer_find(net, name); |
Richard Alpe | 35b9dd7 | 2014-11-20 10:29:08 +0100 | [diff] [blame] | 771 | if (!bearer) { |
| 772 | err = -EINVAL; |
| 773 | goto err_out; |
| 774 | } |
| 775 | |
Nicolas Dichtel | f2f6739 | 2015-04-28 18:33:50 +0200 | [diff] [blame] | 776 | err = __tipc_nl_add_bearer(&msg, bearer, 0); |
Richard Alpe | 35b9dd7 | 2014-11-20 10:29:08 +0100 | [diff] [blame] | 777 | if (err) |
| 778 | goto err_out; |
| 779 | rtnl_unlock(); |
| 780 | |
| 781 | return genlmsg_reply(rep, info); |
| 782 | err_out: |
| 783 | rtnl_unlock(); |
| 784 | nlmsg_free(rep); |
| 785 | |
| 786 | return err; |
| 787 | } |
| 788 | |
Richard Alpe | 0655f6a | 2014-11-20 10:29:07 +0100 | [diff] [blame] | 789 | int tipc_nl_bearer_disable(struct sk_buff *skb, struct genl_info *info) |
| 790 | { |
| 791 | int err; |
| 792 | char *name; |
| 793 | struct tipc_bearer *bearer; |
| 794 | struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1]; |
Richard Alpe | 9ab1546 | 2015-02-09 09:50:05 +0100 | [diff] [blame] | 795 | struct net *net = sock_net(skb->sk); |
Richard Alpe | 0655f6a | 2014-11-20 10:29:07 +0100 | [diff] [blame] | 796 | |
| 797 | if (!info->attrs[TIPC_NLA_BEARER]) |
| 798 | return -EINVAL; |
| 799 | |
| 800 | err = nla_parse_nested(attrs, TIPC_NLA_BEARER_MAX, |
| 801 | info->attrs[TIPC_NLA_BEARER], |
| 802 | tipc_nl_bearer_policy); |
| 803 | if (err) |
| 804 | return err; |
| 805 | |
| 806 | if (!attrs[TIPC_NLA_BEARER_NAME]) |
| 807 | return -EINVAL; |
| 808 | |
| 809 | name = nla_data(attrs[TIPC_NLA_BEARER_NAME]); |
| 810 | |
| 811 | rtnl_lock(); |
Ying Xue | 7f9f95d | 2015-01-09 15:27:06 +0800 | [diff] [blame] | 812 | bearer = tipc_bearer_find(net, name); |
Richard Alpe | 0655f6a | 2014-11-20 10:29:07 +0100 | [diff] [blame] | 813 | if (!bearer) { |
| 814 | rtnl_unlock(); |
| 815 | return -EINVAL; |
| 816 | } |
| 817 | |
Jon Paul Maloy | b1c29f6 | 2015-05-14 10:46:11 -0400 | [diff] [blame] | 818 | bearer_disable(net, bearer); |
Richard Alpe | 0655f6a | 2014-11-20 10:29:07 +0100 | [diff] [blame] | 819 | rtnl_unlock(); |
| 820 | |
| 821 | return 0; |
| 822 | } |
| 823 | |
| 824 | int tipc_nl_bearer_enable(struct sk_buff *skb, struct genl_info *info) |
| 825 | { |
| 826 | int err; |
| 827 | char *bearer; |
| 828 | struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1]; |
Richard Alpe | 9ab1546 | 2015-02-09 09:50:05 +0100 | [diff] [blame] | 829 | struct net *net = sock_net(skb->sk); |
| 830 | struct tipc_net *tn = net_generic(net, tipc_net_id); |
Richard Alpe | 0655f6a | 2014-11-20 10:29:07 +0100 | [diff] [blame] | 831 | u32 domain; |
| 832 | u32 prio; |
| 833 | |
| 834 | prio = TIPC_MEDIA_LINK_PRI; |
Parthasarathy Bhuvaragan | 9ff26e9 | 2016-07-26 08:47:18 +0200 | [diff] [blame^] | 835 | domain = tn->own_addr & TIPC_ZONE_CLUSTER_MASK; |
Richard Alpe | 0655f6a | 2014-11-20 10:29:07 +0100 | [diff] [blame] | 836 | |
| 837 | if (!info->attrs[TIPC_NLA_BEARER]) |
| 838 | return -EINVAL; |
| 839 | |
| 840 | err = nla_parse_nested(attrs, TIPC_NLA_BEARER_MAX, |
| 841 | info->attrs[TIPC_NLA_BEARER], |
| 842 | tipc_nl_bearer_policy); |
| 843 | if (err) |
| 844 | return err; |
| 845 | |
| 846 | if (!attrs[TIPC_NLA_BEARER_NAME]) |
| 847 | return -EINVAL; |
| 848 | |
| 849 | bearer = nla_data(attrs[TIPC_NLA_BEARER_NAME]); |
| 850 | |
| 851 | if (attrs[TIPC_NLA_BEARER_DOMAIN]) |
| 852 | domain = nla_get_u32(attrs[TIPC_NLA_BEARER_DOMAIN]); |
| 853 | |
| 854 | if (attrs[TIPC_NLA_BEARER_PROP]) { |
| 855 | struct nlattr *props[TIPC_NLA_PROP_MAX + 1]; |
| 856 | |
| 857 | err = tipc_nl_parse_link_prop(attrs[TIPC_NLA_BEARER_PROP], |
| 858 | props); |
| 859 | if (err) |
| 860 | return err; |
| 861 | |
| 862 | if (props[TIPC_NLA_PROP_PRIO]) |
| 863 | prio = nla_get_u32(props[TIPC_NLA_PROP_PRIO]); |
| 864 | } |
| 865 | |
| 866 | rtnl_lock(); |
Erik Hugne | d0f9193 | 2015-03-05 10:23:49 +0100 | [diff] [blame] | 867 | err = tipc_enable_bearer(net, bearer, domain, prio, attrs); |
Richard Alpe | 0655f6a | 2014-11-20 10:29:07 +0100 | [diff] [blame] | 868 | if (err) { |
| 869 | rtnl_unlock(); |
| 870 | return err; |
| 871 | } |
| 872 | rtnl_unlock(); |
| 873 | |
| 874 | return 0; |
| 875 | } |
Richard Alpe | 315c00b | 2014-11-20 10:29:09 +0100 | [diff] [blame] | 876 | |
| 877 | int tipc_nl_bearer_set(struct sk_buff *skb, struct genl_info *info) |
| 878 | { |
| 879 | int err; |
| 880 | char *name; |
| 881 | struct tipc_bearer *b; |
| 882 | struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1]; |
Richard Alpe | c3d6fb8 | 2015-05-06 13:58:54 +0200 | [diff] [blame] | 883 | struct net *net = sock_net(skb->sk); |
Richard Alpe | 315c00b | 2014-11-20 10:29:09 +0100 | [diff] [blame] | 884 | |
| 885 | if (!info->attrs[TIPC_NLA_BEARER]) |
| 886 | return -EINVAL; |
| 887 | |
| 888 | err = nla_parse_nested(attrs, TIPC_NLA_BEARER_MAX, |
| 889 | info->attrs[TIPC_NLA_BEARER], |
| 890 | tipc_nl_bearer_policy); |
| 891 | if (err) |
| 892 | return err; |
| 893 | |
| 894 | if (!attrs[TIPC_NLA_BEARER_NAME]) |
| 895 | return -EINVAL; |
| 896 | name = nla_data(attrs[TIPC_NLA_BEARER_NAME]); |
| 897 | |
| 898 | rtnl_lock(); |
Ying Xue | 7f9f95d | 2015-01-09 15:27:06 +0800 | [diff] [blame] | 899 | b = tipc_bearer_find(net, name); |
Richard Alpe | 315c00b | 2014-11-20 10:29:09 +0100 | [diff] [blame] | 900 | if (!b) { |
| 901 | rtnl_unlock(); |
| 902 | return -EINVAL; |
| 903 | } |
| 904 | |
| 905 | if (attrs[TIPC_NLA_BEARER_PROP]) { |
| 906 | struct nlattr *props[TIPC_NLA_PROP_MAX + 1]; |
| 907 | |
| 908 | err = tipc_nl_parse_link_prop(attrs[TIPC_NLA_BEARER_PROP], |
| 909 | props); |
| 910 | if (err) { |
| 911 | rtnl_unlock(); |
| 912 | return err; |
| 913 | } |
| 914 | |
| 915 | if (props[TIPC_NLA_PROP_TOL]) |
| 916 | b->tolerance = nla_get_u32(props[TIPC_NLA_PROP_TOL]); |
| 917 | if (props[TIPC_NLA_PROP_PRIO]) |
| 918 | b->priority = nla_get_u32(props[TIPC_NLA_PROP_PRIO]); |
| 919 | if (props[TIPC_NLA_PROP_WIN]) |
| 920 | b->window = nla_get_u32(props[TIPC_NLA_PROP_WIN]); |
| 921 | } |
| 922 | rtnl_unlock(); |
| 923 | |
| 924 | return 0; |
| 925 | } |
Richard Alpe | 46f15c6 | 2014-11-20 10:29:15 +0100 | [diff] [blame] | 926 | |
Richard Alpe | d818280 | 2014-11-24 11:10:29 +0100 | [diff] [blame] | 927 | static int __tipc_nl_add_media(struct tipc_nl_msg *msg, |
Nicolas Dichtel | f2f6739 | 2015-04-28 18:33:50 +0200 | [diff] [blame] | 928 | struct tipc_media *media, int nlflags) |
Richard Alpe | 46f15c6 | 2014-11-20 10:29:15 +0100 | [diff] [blame] | 929 | { |
| 930 | void *hdr; |
| 931 | struct nlattr *attrs; |
| 932 | struct nlattr *prop; |
| 933 | |
Richard Alpe | bfb3e5d | 2015-02-09 09:50:03 +0100 | [diff] [blame] | 934 | hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_family, |
Nicolas Dichtel | f2f6739 | 2015-04-28 18:33:50 +0200 | [diff] [blame] | 935 | nlflags, TIPC_NL_MEDIA_GET); |
Richard Alpe | 46f15c6 | 2014-11-20 10:29:15 +0100 | [diff] [blame] | 936 | if (!hdr) |
| 937 | return -EMSGSIZE; |
| 938 | |
| 939 | attrs = nla_nest_start(msg->skb, TIPC_NLA_MEDIA); |
| 940 | if (!attrs) |
| 941 | goto msg_full; |
| 942 | |
| 943 | if (nla_put_string(msg->skb, TIPC_NLA_MEDIA_NAME, media->name)) |
| 944 | goto attr_msg_full; |
| 945 | |
| 946 | prop = nla_nest_start(msg->skb, TIPC_NLA_MEDIA_PROP); |
| 947 | if (!prop) |
| 948 | goto prop_msg_full; |
| 949 | if (nla_put_u32(msg->skb, TIPC_NLA_PROP_PRIO, media->priority)) |
| 950 | goto prop_msg_full; |
| 951 | if (nla_put_u32(msg->skb, TIPC_NLA_PROP_TOL, media->tolerance)) |
| 952 | goto prop_msg_full; |
| 953 | if (nla_put_u32(msg->skb, TIPC_NLA_PROP_WIN, media->window)) |
| 954 | goto prop_msg_full; |
| 955 | |
| 956 | nla_nest_end(msg->skb, prop); |
| 957 | nla_nest_end(msg->skb, attrs); |
| 958 | genlmsg_end(msg->skb, hdr); |
| 959 | |
| 960 | return 0; |
| 961 | |
| 962 | prop_msg_full: |
| 963 | nla_nest_cancel(msg->skb, prop); |
| 964 | attr_msg_full: |
| 965 | nla_nest_cancel(msg->skb, attrs); |
| 966 | msg_full: |
| 967 | genlmsg_cancel(msg->skb, hdr); |
| 968 | |
| 969 | return -EMSGSIZE; |
| 970 | } |
| 971 | |
| 972 | int tipc_nl_media_dump(struct sk_buff *skb, struct netlink_callback *cb) |
| 973 | { |
| 974 | int err; |
| 975 | int i = cb->args[0]; |
| 976 | struct tipc_nl_msg msg; |
| 977 | |
| 978 | if (i == MAX_MEDIA) |
| 979 | return 0; |
| 980 | |
| 981 | msg.skb = skb; |
| 982 | msg.portid = NETLINK_CB(cb->skb).portid; |
| 983 | msg.seq = cb->nlh->nlmsg_seq; |
| 984 | |
| 985 | rtnl_lock(); |
| 986 | for (; media_info_array[i] != NULL; i++) { |
Nicolas Dichtel | f2f6739 | 2015-04-28 18:33:50 +0200 | [diff] [blame] | 987 | err = __tipc_nl_add_media(&msg, media_info_array[i], |
| 988 | NLM_F_MULTI); |
Richard Alpe | 46f15c6 | 2014-11-20 10:29:15 +0100 | [diff] [blame] | 989 | if (err) |
| 990 | break; |
| 991 | } |
| 992 | rtnl_unlock(); |
| 993 | |
| 994 | cb->args[0] = i; |
| 995 | return skb->len; |
| 996 | } |
| 997 | |
| 998 | int tipc_nl_media_get(struct sk_buff *skb, struct genl_info *info) |
| 999 | { |
| 1000 | int err; |
| 1001 | char *name; |
| 1002 | struct tipc_nl_msg msg; |
| 1003 | struct tipc_media *media; |
| 1004 | struct sk_buff *rep; |
| 1005 | struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1]; |
| 1006 | |
| 1007 | if (!info->attrs[TIPC_NLA_MEDIA]) |
| 1008 | return -EINVAL; |
| 1009 | |
| 1010 | err = nla_parse_nested(attrs, TIPC_NLA_MEDIA_MAX, |
| 1011 | info->attrs[TIPC_NLA_MEDIA], |
| 1012 | tipc_nl_media_policy); |
| 1013 | if (err) |
| 1014 | return err; |
| 1015 | |
| 1016 | if (!attrs[TIPC_NLA_MEDIA_NAME]) |
| 1017 | return -EINVAL; |
| 1018 | name = nla_data(attrs[TIPC_NLA_MEDIA_NAME]); |
| 1019 | |
| 1020 | rep = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); |
| 1021 | if (!rep) |
| 1022 | return -ENOMEM; |
| 1023 | |
| 1024 | msg.skb = rep; |
| 1025 | msg.portid = info->snd_portid; |
| 1026 | msg.seq = info->snd_seq; |
| 1027 | |
| 1028 | rtnl_lock(); |
| 1029 | media = tipc_media_find(name); |
| 1030 | if (!media) { |
| 1031 | err = -EINVAL; |
| 1032 | goto err_out; |
| 1033 | } |
| 1034 | |
Nicolas Dichtel | f2f6739 | 2015-04-28 18:33:50 +0200 | [diff] [blame] | 1035 | err = __tipc_nl_add_media(&msg, media, 0); |
Richard Alpe | 46f15c6 | 2014-11-20 10:29:15 +0100 | [diff] [blame] | 1036 | if (err) |
| 1037 | goto err_out; |
| 1038 | rtnl_unlock(); |
| 1039 | |
| 1040 | return genlmsg_reply(rep, info); |
| 1041 | err_out: |
| 1042 | rtnl_unlock(); |
| 1043 | nlmsg_free(rep); |
| 1044 | |
| 1045 | return err; |
| 1046 | } |
Richard Alpe | 1e55417 | 2014-11-20 10:29:16 +0100 | [diff] [blame] | 1047 | |
| 1048 | int tipc_nl_media_set(struct sk_buff *skb, struct genl_info *info) |
| 1049 | { |
| 1050 | int err; |
| 1051 | char *name; |
| 1052 | struct tipc_media *m; |
| 1053 | struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1]; |
| 1054 | |
| 1055 | if (!info->attrs[TIPC_NLA_MEDIA]) |
| 1056 | return -EINVAL; |
| 1057 | |
| 1058 | err = nla_parse_nested(attrs, TIPC_NLA_MEDIA_MAX, |
| 1059 | info->attrs[TIPC_NLA_MEDIA], |
| 1060 | tipc_nl_media_policy); |
| 1061 | |
| 1062 | if (!attrs[TIPC_NLA_MEDIA_NAME]) |
| 1063 | return -EINVAL; |
| 1064 | name = nla_data(attrs[TIPC_NLA_MEDIA_NAME]); |
| 1065 | |
| 1066 | rtnl_lock(); |
| 1067 | m = tipc_media_find(name); |
| 1068 | if (!m) { |
| 1069 | rtnl_unlock(); |
| 1070 | return -EINVAL; |
| 1071 | } |
| 1072 | |
| 1073 | if (attrs[TIPC_NLA_MEDIA_PROP]) { |
| 1074 | struct nlattr *props[TIPC_NLA_PROP_MAX + 1]; |
| 1075 | |
| 1076 | err = tipc_nl_parse_link_prop(attrs[TIPC_NLA_MEDIA_PROP], |
| 1077 | props); |
| 1078 | if (err) { |
| 1079 | rtnl_unlock(); |
| 1080 | return err; |
| 1081 | } |
| 1082 | |
| 1083 | if (props[TIPC_NLA_PROP_TOL]) |
| 1084 | m->tolerance = nla_get_u32(props[TIPC_NLA_PROP_TOL]); |
| 1085 | if (props[TIPC_NLA_PROP_PRIO]) |
| 1086 | m->priority = nla_get_u32(props[TIPC_NLA_PROP_PRIO]); |
| 1087 | if (props[TIPC_NLA_PROP_WIN]) |
| 1088 | m->window = nla_get_u32(props[TIPC_NLA_PROP_WIN]); |
| 1089 | } |
| 1090 | rtnl_unlock(); |
| 1091 | |
| 1092 | return 0; |
| 1093 | } |