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 | 5702dba | 2013-12-10 20:45:39 -0800 | [diff] [blame] | 4 | * Copyright (c) 1996-2006, 2013, Ericsson AB |
Allan Stephens | 2d627b9 | 2011-01-07 13:00:11 -0500 | [diff] [blame] | 5 | * Copyright (c) 2004-2006, 2010-2011, Wind River Systems |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 6 | * All rights reserved. |
| 7 | * |
Per Liden | 9ea1fd3 | 2006-01-11 13:30:43 +0100 | [diff] [blame] | 8 | * Redistribution and use in source and binary forms, with or without |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 9 | * modification, are permitted provided that the following conditions are met: |
| 10 | * |
Per Liden | 9ea1fd3 | 2006-01-11 13:30:43 +0100 | [diff] [blame] | 11 | * 1. Redistributions of source code must retain the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer. |
| 13 | * 2. Redistributions in binary form must reproduce the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer in the |
| 15 | * documentation and/or other materials provided with the distribution. |
| 16 | * 3. Neither the names of the copyright holders nor the names of its |
| 17 | * contributors may be used to endorse or promote products derived from |
| 18 | * this software without specific prior written permission. |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 19 | * |
Per Liden | 9ea1fd3 | 2006-01-11 13:30:43 +0100 | [diff] [blame] | 20 | * Alternatively, this software may be distributed under the terms of the |
| 21 | * GNU General Public License ("GPL") version 2 as published by the Free |
| 22 | * Software Foundation. |
| 23 | * |
| 24 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 25 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| 28 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 29 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 30 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 31 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 32 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 33 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 34 | * POSSIBILITY OF SUCH DAMAGE. |
| 35 | */ |
| 36 | |
| 37 | #include "core.h" |
| 38 | #include "config.h" |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 39 | #include "bearer.h" |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 40 | #include "discover.h" |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 41 | |
Patrick McHardy | a29a194 | 2013-04-17 06:18:28 +0000 | [diff] [blame] | 42 | #define MAX_ADDR_STR 60 |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 43 | |
Jon Paul Maloy | ef72a7e | 2013-12-10 20:45:40 -0800 | [diff] [blame] | 44 | static struct tipc_media * const media_info_array[] = { |
Jon Paul Maloy | 5702dba | 2013-12-10 20:45:39 -0800 | [diff] [blame] | 45 | ð_media_info, |
| 46 | #ifdef CONFIG_TIPC_MEDIA_IB |
| 47 | &ib_media_info, |
| 48 | #endif |
| 49 | NULL |
| 50 | }; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 51 | |
Allan Stephens | 2d627b9 | 2011-01-07 13:00:11 -0500 | [diff] [blame] | 52 | struct tipc_bearer tipc_bearers[MAX_BEARERS]; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 53 | |
Allan Stephens | 3a777ff | 2011-04-21 13:58:26 -0500 | [diff] [blame] | 54 | static void bearer_disable(struct tipc_bearer *b_ptr); |
| 55 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 56 | /** |
Allan Stephens | 5c216e1 | 2011-10-18 11:34:29 -0400 | [diff] [blame] | 57 | * tipc_media_find - locates specified media object by name |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 58 | */ |
Paul Gortmaker | 358a0d1 | 2011-12-29 20:19:42 -0500 | [diff] [blame] | 59 | struct tipc_media *tipc_media_find(const char *name) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 60 | { |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 61 | u32 i; |
| 62 | |
Jon Paul Maloy | ef72a7e | 2013-12-10 20:45:40 -0800 | [diff] [blame] | 63 | for (i = 0; media_info_array[i] != NULL; i++) { |
| 64 | if (!strcmp(media_info_array[i]->name, name)) |
Jon Paul Maloy | 5702dba | 2013-12-10 20:45:39 -0800 | [diff] [blame] | 65 | break; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 66 | } |
Jon Paul Maloy | ef72a7e | 2013-12-10 20:45:40 -0800 | [diff] [blame] | 67 | return media_info_array[i]; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 68 | } |
| 69 | |
| 70 | /** |
Allan Stephens | c79be45 | 2011-10-06 16:40:55 -0400 | [diff] [blame] | 71 | * media_find_id - locates specified media object by type identifier |
| 72 | */ |
Paul Gortmaker | 358a0d1 | 2011-12-29 20:19:42 -0500 | [diff] [blame] | 73 | static struct tipc_media *media_find_id(u8 type) |
Allan Stephens | c79be45 | 2011-10-06 16:40:55 -0400 | [diff] [blame] | 74 | { |
| 75 | u32 i; |
| 76 | |
Jon Paul Maloy | ef72a7e | 2013-12-10 20:45:40 -0800 | [diff] [blame] | 77 | for (i = 0; media_info_array[i] != NULL; i++) { |
| 78 | if (media_info_array[i]->type_id == type) |
Jon Paul Maloy | 5702dba | 2013-12-10 20:45:39 -0800 | [diff] [blame] | 79 | break; |
Allan Stephens | c79be45 | 2011-10-06 16:40:55 -0400 | [diff] [blame] | 80 | } |
Jon Paul Maloy | ef72a7e | 2013-12-10 20:45:40 -0800 | [diff] [blame] | 81 | return media_info_array[i]; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 82 | } |
| 83 | |
| 84 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 85 | * tipc_media_addr_printf - record media address in print buffer |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 86 | */ |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 87 | 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] | 88 | { |
Allan Stephens | c61b666 | 2011-10-07 11:31:49 -0400 | [diff] [blame] | 89 | char addr_str[MAX_ADDR_STR]; |
Paul Gortmaker | 358a0d1 | 2011-12-29 20:19:42 -0500 | [diff] [blame] | 90 | struct tipc_media *m_ptr; |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 91 | int ret; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 92 | |
Allan Stephens | 3d749a6 | 2011-10-07 15:19:11 -0400 | [diff] [blame] | 93 | m_ptr = media_find_id(a->media_id); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 94 | |
Allan Stephens | c61b666 | 2011-10-07 11:31:49 -0400 | [diff] [blame] | 95 | if (m_ptr && !m_ptr->addr2str(a, addr_str, sizeof(addr_str))) |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 96 | ret = tipc_snprintf(buf, len, "%s(%s)", m_ptr->name, addr_str); |
Allan Stephens | c61b666 | 2011-10-07 11:31:49 -0400 | [diff] [blame] | 97 | else { |
Allan Stephens | c61b666 | 2011-10-07 11:31:49 -0400 | [diff] [blame] | 98 | u32 i; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 99 | |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 100 | ret = tipc_snprintf(buf, len, "UNKNOWN(%u)", a->media_id); |
Allan Stephens | 3d749a6 | 2011-10-07 15:19:11 -0400 | [diff] [blame] | 101 | for (i = 0; i < sizeof(a->value); i++) |
Erik Hugne | dc1aed3 | 2012-06-29 00:50:23 -0400 | [diff] [blame] | 102 | ret += tipc_snprintf(buf - ret, len + ret, |
| 103 | "-%02x", a->value[i]); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 104 | } |
| 105 | } |
| 106 | |
| 107 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 108 | * tipc_media_get_names - record names of registered media in buffer |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 109 | */ |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 110 | struct sk_buff *tipc_media_get_names(void) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 111 | { |
| 112 | struct sk_buff *buf; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 113 | int i; |
| 114 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 115 | buf = tipc_cfg_reply_alloc(MAX_MEDIA * TLV_SPACE(TIPC_MAX_MEDIA_NAME)); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 116 | if (!buf) |
| 117 | return NULL; |
| 118 | |
Jon Paul Maloy | ef72a7e | 2013-12-10 20:45:40 -0800 | [diff] [blame] | 119 | for (i = 0; media_info_array[i] != NULL; i++) { |
Allan Stephens | a31abe8 | 2011-10-07 09:25:12 -0400 | [diff] [blame] | 120 | tipc_cfg_append_tlv(buf, TIPC_TLV_MEDIA_NAME, |
Jon Paul Maloy | ef72a7e | 2013-12-10 20:45:40 -0800 | [diff] [blame] | 121 | media_info_array[i]->name, |
| 122 | strlen(media_info_array[i]->name) + 1); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 123 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 124 | return buf; |
| 125 | } |
| 126 | |
| 127 | /** |
| 128 | * bearer_name_validate - validate & (optionally) deconstruct bearer name |
Ben Hutchings | 2c53040 | 2012-07-10 10:55:09 +0000 | [diff] [blame] | 129 | * @name: ptr to bearer name string |
| 130 | * @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] | 131 | * |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 132 | * Returns 1 if bearer name is valid, otherwise 0. |
| 133 | */ |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 134 | static int bearer_name_validate(const char *name, |
Paul Gortmaker | f19765f | 2011-12-29 21:39:49 -0500 | [diff] [blame] | 135 | struct tipc_bearer_names *name_parts) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 136 | { |
| 137 | char name_copy[TIPC_MAX_BEARER_NAME]; |
| 138 | char *media_name; |
| 139 | char *if_name; |
| 140 | u32 media_len; |
| 141 | u32 if_len; |
| 142 | |
| 143 | /* copy bearer name & ensure length is OK */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 144 | name_copy[TIPC_MAX_BEARER_NAME - 1] = 0; |
| 145 | /* need above in case non-Posix strncpy() doesn't pad with nulls */ |
| 146 | strncpy(name_copy, name, TIPC_MAX_BEARER_NAME); |
| 147 | if (name_copy[TIPC_MAX_BEARER_NAME - 1] != 0) |
| 148 | return 0; |
| 149 | |
| 150 | /* ensure all component parts of bearer name are present */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 151 | media_name = name_copy; |
Allan Stephens | 2db9983 | 2010-12-31 18:59:33 +0000 | [diff] [blame] | 152 | if_name = strchr(media_name, ':'); |
| 153 | if (if_name == NULL) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 154 | return 0; |
| 155 | *(if_name++) = 0; |
| 156 | media_len = if_name - media_name; |
| 157 | if_len = strlen(if_name) + 1; |
| 158 | |
| 159 | /* validate component parts of bearer name */ |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 160 | if ((media_len <= 1) || (media_len > TIPC_MAX_MEDIA_NAME) || |
Ying Xue | fc07393 | 2012-08-16 12:09:08 +0000 | [diff] [blame] | 161 | (if_len <= 1) || (if_len > TIPC_MAX_IF_NAME)) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 162 | return 0; |
| 163 | |
| 164 | /* return bearer name components, if necessary */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 165 | if (name_parts) { |
| 166 | strcpy(name_parts->media_name, media_name); |
| 167 | strcpy(name_parts->if_name, if_name); |
| 168 | } |
| 169 | return 1; |
| 170 | } |
| 171 | |
| 172 | /** |
Allan Stephens | 5c216e1 | 2011-10-18 11:34:29 -0400 | [diff] [blame] | 173 | * tipc_bearer_find - locates bearer object with matching bearer name |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 174 | */ |
Allan Stephens | 5c216e1 | 2011-10-18 11:34:29 -0400 | [diff] [blame] | 175 | struct tipc_bearer *tipc_bearer_find(const char *name) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 176 | { |
Allan Stephens | 2d627b9 | 2011-01-07 13:00:11 -0500 | [diff] [blame] | 177 | struct tipc_bearer *b_ptr; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 178 | u32 i; |
| 179 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 180 | for (i = 0, b_ptr = tipc_bearers; i < MAX_BEARERS; i++, b_ptr++) { |
Allan Stephens | 2d627b9 | 2011-01-07 13:00:11 -0500 | [diff] [blame] | 181 | if (b_ptr->active && (!strcmp(b_ptr->name, name))) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 182 | return b_ptr; |
| 183 | } |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 184 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 185 | } |
| 186 | |
| 187 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 188 | * tipc_bearer_find_interface - locates bearer object with matching interface name |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 189 | */ |
Allan Stephens | 2d627b9 | 2011-01-07 13:00:11 -0500 | [diff] [blame] | 190 | struct tipc_bearer *tipc_bearer_find_interface(const char *if_name) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 191 | { |
Allan Stephens | 2d627b9 | 2011-01-07 13:00:11 -0500 | [diff] [blame] | 192 | struct tipc_bearer *b_ptr; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 193 | char *b_if_name; |
| 194 | u32 i; |
| 195 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 196 | for (i = 0, b_ptr = tipc_bearers; i < MAX_BEARERS; i++, b_ptr++) { |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 197 | if (!b_ptr->active) |
| 198 | continue; |
Allan Stephens | 2d627b9 | 2011-01-07 13:00:11 -0500 | [diff] [blame] | 199 | b_if_name = strchr(b_ptr->name, ':') + 1; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 200 | if (!strcmp(b_if_name, if_name)) |
| 201 | return b_ptr; |
| 202 | } |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 203 | return NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 204 | } |
| 205 | |
| 206 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 207 | * tipc_bearer_get_names - record names of bearers in buffer |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 208 | */ |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 209 | struct sk_buff *tipc_bearer_get_names(void) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 210 | { |
| 211 | struct sk_buff *buf; |
Jon Paul Maloy | ef72a7e | 2013-12-10 20:45:40 -0800 | [diff] [blame] | 212 | struct tipc_bearer *b; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 213 | int i, j; |
| 214 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 215 | buf = tipc_cfg_reply_alloc(MAX_BEARERS * TLV_SPACE(TIPC_MAX_BEARER_NAME)); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 216 | if (!buf) |
| 217 | return NULL; |
| 218 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 219 | read_lock_bh(&tipc_net_lock); |
Jon Paul Maloy | ef72a7e | 2013-12-10 20:45:40 -0800 | [diff] [blame] | 220 | for (i = 0; media_info_array[i] != NULL; i++) { |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 221 | for (j = 0; j < MAX_BEARERS; j++) { |
Jon Paul Maloy | ef72a7e | 2013-12-10 20:45:40 -0800 | [diff] [blame] | 222 | b = &tipc_bearers[j]; |
| 223 | if (b->active && (b->media == media_info_array[i])) { |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 224 | tipc_cfg_append_tlv(buf, TIPC_TLV_BEARER_NAME, |
Jon Paul Maloy | ef72a7e | 2013-12-10 20:45:40 -0800 | [diff] [blame] | 225 | b->name, |
| 226 | strlen(b->name) + 1); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 227 | } |
| 228 | } |
| 229 | } |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 230 | read_unlock_bh(&tipc_net_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 231 | return buf; |
| 232 | } |
| 233 | |
Allan Stephens | 2d627b9 | 2011-01-07 13:00:11 -0500 | [diff] [blame] | 234 | void tipc_bearer_add_dest(struct tipc_bearer *b_ptr, u32 dest) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 235 | { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 236 | tipc_nmap_add(&b_ptr->nodes, dest); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 237 | tipc_bcbearer_sort(); |
Allan Stephens | 1209966 | 2011-04-21 19:05:25 -0500 | [diff] [blame] | 238 | tipc_disc_add_dest(b_ptr->link_req); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 239 | } |
| 240 | |
Allan Stephens | 2d627b9 | 2011-01-07 13:00:11 -0500 | [diff] [blame] | 241 | void tipc_bearer_remove_dest(struct tipc_bearer *b_ptr, u32 dest) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 242 | { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 243 | tipc_nmap_remove(&b_ptr->nodes, dest); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 244 | tipc_bcbearer_sort(); |
Allan Stephens | 1209966 | 2011-04-21 19:05:25 -0500 | [diff] [blame] | 245 | tipc_disc_remove_dest(b_ptr->link_req); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 246 | } |
| 247 | |
Allan Stephens | b274f4a | 2010-05-11 14:30:16 +0000 | [diff] [blame] | 248 | /** |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 249 | * tipc_enable_bearer - enable bearer with the given name |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 250 | */ |
Allan Stephens | 50d3e63 | 2011-02-28 14:56:15 -0500 | [diff] [blame] | 251 | int tipc_enable_bearer(const char *name, u32 disc_domain, u32 priority) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 252 | { |
Allan Stephens | 2d627b9 | 2011-01-07 13:00:11 -0500 | [diff] [blame] | 253 | struct tipc_bearer *b_ptr; |
Paul Gortmaker | 358a0d1 | 2011-12-29 20:19:42 -0500 | [diff] [blame] | 254 | struct tipc_media *m_ptr; |
Paul Gortmaker | f19765f | 2011-12-29 21:39:49 -0500 | [diff] [blame] | 255 | struct tipc_bearer_names b_names; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 256 | char addr_string[16]; |
| 257 | u32 bearer_id; |
| 258 | u32 with_this_prio; |
| 259 | u32 i; |
| 260 | int res = -EINVAL; |
| 261 | |
Allan Stephens | b58343f | 2011-11-08 13:48:28 -0500 | [diff] [blame] | 262 | if (!tipc_own_addr) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 263 | pr_warn("Bearer <%s> rejected, not supported in standalone mode\n", |
| 264 | name); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 265 | return -ENOPROTOOPT; |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 266 | } |
Paul Gortmaker | f19765f | 2011-12-29 21:39:49 -0500 | [diff] [blame] | 267 | if (!bearer_name_validate(name, &b_names)) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 268 | pr_warn("Bearer <%s> rejected, illegal name\n", name); |
Per Liden | 16cb4b3 | 2006-01-13 22:22:22 +0100 | [diff] [blame] | 269 | return -EINVAL; |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 270 | } |
Allan Stephens | 66e019a | 2011-04-20 16:24:07 -0500 | [diff] [blame] | 271 | if (tipc_addr_domain_valid(disc_domain) && |
| 272 | (disc_domain != tipc_own_addr)) { |
| 273 | if (tipc_in_scope(disc_domain, tipc_own_addr)) { |
| 274 | disc_domain = tipc_own_addr & TIPC_CLUSTER_MASK; |
| 275 | res = 0; /* accept any node in own cluster */ |
Allan Stephens | 336ebf5 | 2012-04-17 18:02:01 -0400 | [diff] [blame] | 276 | } else if (in_own_cluster_exact(disc_domain)) |
Allan Stephens | 66e019a | 2011-04-20 16:24:07 -0500 | [diff] [blame] | 277 | res = 0; /* accept specified node in own cluster */ |
| 278 | } |
| 279 | if (res) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 280 | pr_warn("Bearer <%s> rejected, illegal discovery domain\n", |
| 281 | name); |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 282 | return -EINVAL; |
| 283 | } |
Allan Stephens | 9efde4a | 2011-11-03 13:15:10 -0400 | [diff] [blame] | 284 | if ((priority > TIPC_MAX_LINK_PRI) && |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 285 | (priority != TIPC_MEDIA_LINK_PRI)) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 286 | pr_warn("Bearer <%s> rejected, illegal priority\n", name); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 287 | return -EINVAL; |
Allan Stephens | a10bd92 | 2006-06-25 23:52:17 -0700 | [diff] [blame] | 288 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 289 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 290 | write_lock_bh(&tipc_net_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 291 | |
Paul Gortmaker | f19765f | 2011-12-29 21:39:49 -0500 | [diff] [blame] | 292 | m_ptr = tipc_media_find(b_names.media_name); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 293 | if (!m_ptr) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 294 | pr_warn("Bearer <%s> rejected, media <%s> not registered\n", |
| 295 | name, b_names.media_name); |
Allan Stephens | 3a777ff | 2011-04-21 13:58:26 -0500 | [diff] [blame] | 296 | goto exit; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 297 | } |
Per Liden | 16cb4b3 | 2006-01-13 22:22:22 +0100 | [diff] [blame] | 298 | |
| 299 | if (priority == TIPC_MEDIA_LINK_PRI) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 300 | priority = m_ptr->priority; |
| 301 | |
| 302 | restart: |
| 303 | bearer_id = MAX_BEARERS; |
| 304 | with_this_prio = 1; |
| 305 | for (i = MAX_BEARERS; i-- != 0; ) { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 306 | if (!tipc_bearers[i].active) { |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 307 | bearer_id = i; |
| 308 | continue; |
| 309 | } |
Allan Stephens | 2d627b9 | 2011-01-07 13:00:11 -0500 | [diff] [blame] | 310 | if (!strcmp(name, tipc_bearers[i].name)) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 311 | pr_warn("Bearer <%s> rejected, already enabled\n", |
| 312 | name); |
Allan Stephens | 3a777ff | 2011-04-21 13:58:26 -0500 | [diff] [blame] | 313 | goto exit; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 314 | } |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 315 | if ((tipc_bearers[i].priority == priority) && |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 316 | (++with_this_prio > 2)) { |
| 317 | if (priority-- == 0) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 318 | pr_warn("Bearer <%s> rejected, duplicate priority\n", |
| 319 | name); |
Allan Stephens | 3a777ff | 2011-04-21 13:58:26 -0500 | [diff] [blame] | 320 | goto exit; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 321 | } |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 322 | pr_warn("Bearer <%s> priority adjustment required %u->%u\n", |
| 323 | name, priority + 1, priority); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 324 | goto restart; |
| 325 | } |
| 326 | } |
| 327 | if (bearer_id >= MAX_BEARERS) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 328 | pr_warn("Bearer <%s> rejected, bearer limit reached (%u)\n", |
| 329 | name, MAX_BEARERS); |
Allan Stephens | 3a777ff | 2011-04-21 13:58:26 -0500 | [diff] [blame] | 330 | goto exit; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 331 | } |
| 332 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 333 | b_ptr = &tipc_bearers[bearer_id]; |
Allan Stephens | 2d627b9 | 2011-01-07 13:00:11 -0500 | [diff] [blame] | 334 | strcpy(b_ptr->name, name); |
Ying Xue | 4babbaa | 2013-10-18 07:23:17 +0200 | [diff] [blame] | 335 | res = m_ptr->enable_media(b_ptr); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 336 | if (res) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 337 | pr_warn("Bearer <%s> rejected, enable failure (%d)\n", |
| 338 | name, -res); |
Allan Stephens | 3a777ff | 2011-04-21 13:58:26 -0500 | [diff] [blame] | 339 | goto exit; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 340 | } |
| 341 | |
| 342 | b_ptr->identity = bearer_id; |
| 343 | b_ptr->media = m_ptr; |
Allan Stephens | 5c216e1 | 2011-10-18 11:34:29 -0400 | [diff] [blame] | 344 | b_ptr->tolerance = m_ptr->tolerance; |
| 345 | b_ptr->window = m_ptr->window; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 346 | b_ptr->net_plane = bearer_id + 'A'; |
| 347 | b_ptr->active = 1; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 348 | b_ptr->priority = priority; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 349 | INIT_LIST_HEAD(&b_ptr->links); |
Allan Stephens | 2d627b9 | 2011-01-07 13:00:11 -0500 | [diff] [blame] | 350 | spin_lock_init(&b_ptr->lock); |
Allan Stephens | 3a777ff | 2011-04-21 13:58:26 -0500 | [diff] [blame] | 351 | |
Patrick McHardy | 8aeb89f | 2013-04-17 06:18:26 +0000 | [diff] [blame] | 352 | res = tipc_disc_create(b_ptr, &b_ptr->bcast_addr, disc_domain); |
Allan Stephens | 3a777ff | 2011-04-21 13:58:26 -0500 | [diff] [blame] | 353 | if (res) { |
| 354 | bearer_disable(b_ptr); |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 355 | pr_warn("Bearer <%s> rejected, discovery object creation failed\n", |
| 356 | name); |
Allan Stephens | 3a777ff | 2011-04-21 13:58:26 -0500 | [diff] [blame] | 357 | goto exit; |
| 358 | } |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 359 | pr_info("Enabled bearer <%s>, discovery domain %s, priority %u\n", |
| 360 | name, |
| 361 | tipc_addr_string_fill(addr_string, disc_domain), priority); |
Allan Stephens | 3a777ff | 2011-04-21 13:58:26 -0500 | [diff] [blame] | 362 | exit: |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 363 | write_unlock_bh(&tipc_net_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 364 | return res; |
| 365 | } |
| 366 | |
| 367 | /** |
Erik Hugne | 512137e | 2013-12-06 10:08:00 -0500 | [diff] [blame] | 368 | * tipc_reset_bearer - Reset all links established over this bearer |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 369 | */ |
Ying Xue | 6e967ad | 2013-12-10 20:45:42 -0800 | [diff] [blame^] | 370 | static int tipc_reset_bearer(struct tipc_bearer *b_ptr) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 371 | { |
Paul Gortmaker | a18c4bc | 2011-12-29 20:58:42 -0500 | [diff] [blame] | 372 | struct tipc_link *l_ptr; |
| 373 | struct tipc_link *temp_l_ptr; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 374 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 375 | read_lock_bh(&tipc_net_lock); |
Erik Hugne | 512137e | 2013-12-06 10:08:00 -0500 | [diff] [blame] | 376 | pr_info("Resetting bearer <%s>\n", b_ptr->name); |
Allan Stephens | 2d627b9 | 2011-01-07 13:00:11 -0500 | [diff] [blame] | 377 | spin_lock_bh(&b_ptr->lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 378 | list_for_each_entry_safe(l_ptr, temp_l_ptr, &b_ptr->links, link_list) { |
David S. Miller | 6c00055 | 2008-09-02 23:38:32 -0700 | [diff] [blame] | 379 | struct tipc_node *n_ptr = l_ptr->owner; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 380 | |
| 381 | spin_lock_bh(&n_ptr->lock); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 382 | tipc_link_reset(l_ptr); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 383 | spin_unlock_bh(&n_ptr->lock); |
| 384 | } |
Allan Stephens | 2d627b9 | 2011-01-07 13:00:11 -0500 | [diff] [blame] | 385 | spin_unlock_bh(&b_ptr->lock); |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 386 | read_unlock_bh(&tipc_net_lock); |
Allan Stephens | 0e35fd5 | 2008-07-14 22:44:01 -0700 | [diff] [blame] | 387 | return 0; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 388 | } |
| 389 | |
| 390 | /** |
Paul Gortmaker | 617d3c7 | 2012-04-30 15:29:02 -0400 | [diff] [blame] | 391 | * bearer_disable |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 392 | * |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 393 | * Note: This routine assumes caller holds tipc_net_lock. |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 394 | */ |
Allan Stephens | 2d627b9 | 2011-01-07 13:00:11 -0500 | [diff] [blame] | 395 | static void bearer_disable(struct tipc_bearer *b_ptr) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 396 | { |
Paul Gortmaker | a18c4bc | 2011-12-29 20:58:42 -0500 | [diff] [blame] | 397 | struct tipc_link *l_ptr; |
| 398 | struct tipc_link *temp_l_ptr; |
dingtianhong | d4cca39 | 2013-08-09 17:12:58 +0800 | [diff] [blame] | 399 | struct tipc_link_req *temp_req; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 400 | |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 401 | pr_info("Disabling bearer <%s>\n", b_ptr->name); |
Allan Stephens | 2d627b9 | 2011-01-07 13:00:11 -0500 | [diff] [blame] | 402 | spin_lock_bh(&b_ptr->lock); |
Ying Xue | 4babbaa | 2013-10-18 07:23:17 +0200 | [diff] [blame] | 403 | b_ptr->media->disable_media(b_ptr); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 404 | list_for_each_entry_safe(l_ptr, temp_l_ptr, &b_ptr->links, link_list) { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 405 | tipc_link_delete(l_ptr); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 406 | } |
dingtianhong | d4cca39 | 2013-08-09 17:12:58 +0800 | [diff] [blame] | 407 | temp_req = b_ptr->link_req; |
| 408 | b_ptr->link_req = NULL; |
Allan Stephens | 2d627b9 | 2011-01-07 13:00:11 -0500 | [diff] [blame] | 409 | spin_unlock_bh(&b_ptr->lock); |
dingtianhong | d4cca39 | 2013-08-09 17:12:58 +0800 | [diff] [blame] | 410 | |
| 411 | if (temp_req) |
| 412 | tipc_disc_delete(temp_req); |
| 413 | |
Allan Stephens | 2d627b9 | 2011-01-07 13:00:11 -0500 | [diff] [blame] | 414 | memset(b_ptr, 0, sizeof(struct tipc_bearer)); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 415 | } |
| 416 | |
| 417 | int tipc_disable_bearer(const char *name) |
| 418 | { |
Allan Stephens | 2d627b9 | 2011-01-07 13:00:11 -0500 | [diff] [blame] | 419 | struct tipc_bearer *b_ptr; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 420 | int res; |
| 421 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 422 | write_lock_bh(&tipc_net_lock); |
Allan Stephens | 5c216e1 | 2011-10-18 11:34:29 -0400 | [diff] [blame] | 423 | b_ptr = tipc_bearer_find(name); |
Allan Stephens | ccc901e | 2010-10-14 13:58:26 +0000 | [diff] [blame] | 424 | if (b_ptr == NULL) { |
Erik Hugne | 2cf8aa1 | 2012-06-29 00:16:37 -0400 | [diff] [blame] | 425 | pr_warn("Attempt to disable unknown bearer <%s>\n", name); |
Allan Stephens | ccc901e | 2010-10-14 13:58:26 +0000 | [diff] [blame] | 426 | res = -EINVAL; |
Allan Stephens | 28cc937 | 2010-11-30 12:00:56 +0000 | [diff] [blame] | 427 | } else { |
| 428 | bearer_disable(b_ptr); |
| 429 | res = 0; |
| 430 | } |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 431 | write_unlock_bh(&tipc_net_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 432 | return res; |
| 433 | } |
| 434 | |
Ying Xue | 6e967ad | 2013-12-10 20:45:42 -0800 | [diff] [blame^] | 435 | /** |
| 436 | * tipc_l2_rcv_msg - handle incoming TIPC message from an interface |
| 437 | * @buf: the received packet |
| 438 | * @dev: the net device that the packet was received on |
| 439 | * @pt: the packet_type structure which was used to register this handler |
| 440 | * @orig_dev: the original receive net device in case the device is a bond |
| 441 | * |
| 442 | * Accept only packets explicitly sent to this node, or broadcast packets; |
| 443 | * ignores packets sent using interface multicast, and traffic sent to other |
| 444 | * nodes (which can happen if interface is running in promiscuous mode). |
| 445 | */ |
| 446 | static int tipc_l2_rcv_msg(struct sk_buff *buf, struct net_device *dev, |
| 447 | struct packet_type *pt, struct net_device *orig_dev) |
| 448 | { |
| 449 | struct tipc_bearer *b_ptr; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 450 | |
Ying Xue | 6e967ad | 2013-12-10 20:45:42 -0800 | [diff] [blame^] | 451 | if (!net_eq(dev_net(dev), &init_net)) { |
| 452 | kfree_skb(buf); |
| 453 | return NET_RX_DROP; |
| 454 | } |
| 455 | |
| 456 | rcu_read_lock(); |
| 457 | b_ptr = rcu_dereference(dev->tipc_ptr); |
| 458 | if (likely(b_ptr)) { |
| 459 | if (likely(buf->pkt_type <= PACKET_BROADCAST)) { |
| 460 | buf->next = NULL; |
| 461 | tipc_recv_msg(buf, b_ptr); |
| 462 | rcu_read_unlock(); |
| 463 | return NET_RX_SUCCESS; |
| 464 | } |
| 465 | } |
| 466 | rcu_read_unlock(); |
| 467 | |
| 468 | kfree_skb(buf); |
| 469 | return NET_RX_DROP; |
| 470 | } |
| 471 | |
| 472 | /** |
| 473 | * tipc_l2_device_event - handle device events from network device |
| 474 | * @nb: the context of the notification |
| 475 | * @evt: the type of event |
| 476 | * @ptr: the net device that the event was on |
| 477 | * |
| 478 | * This function is called by the Ethernet driver in case of link |
| 479 | * change event. |
| 480 | */ |
| 481 | static int tipc_l2_device_event(struct notifier_block *nb, unsigned long evt, |
| 482 | void *ptr) |
| 483 | { |
| 484 | struct tipc_bearer *b_ptr; |
| 485 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
| 486 | |
| 487 | if (!net_eq(dev_net(dev), &init_net)) |
| 488 | return NOTIFY_DONE; |
| 489 | |
| 490 | rcu_read_lock(); |
| 491 | b_ptr = rcu_dereference(dev->tipc_ptr); |
| 492 | if (!b_ptr) { |
| 493 | rcu_read_unlock(); |
| 494 | return NOTIFY_DONE; |
| 495 | } |
| 496 | |
| 497 | b_ptr->mtu = dev->mtu; |
| 498 | |
| 499 | switch (evt) { |
| 500 | case NETDEV_CHANGE: |
| 501 | if (netif_carrier_ok(dev)) |
| 502 | break; |
| 503 | case NETDEV_DOWN: |
| 504 | case NETDEV_CHANGEMTU: |
| 505 | case NETDEV_CHANGEADDR: |
| 506 | tipc_reset_bearer(b_ptr); |
| 507 | break; |
| 508 | case NETDEV_UNREGISTER: |
| 509 | case NETDEV_CHANGENAME: |
| 510 | tipc_disable_bearer(b_ptr->name); |
| 511 | break; |
| 512 | } |
| 513 | rcu_read_unlock(); |
| 514 | |
| 515 | return NOTIFY_OK; |
| 516 | } |
| 517 | |
| 518 | static struct packet_type tipc_packet_type __read_mostly = { |
| 519 | .type = __constant_htons(ETH_P_TIPC), |
| 520 | .func = tipc_l2_rcv_msg, |
| 521 | }; |
| 522 | |
| 523 | static struct notifier_block notifier = { |
| 524 | .notifier_call = tipc_l2_device_event, |
| 525 | .priority = 0, |
| 526 | }; |
| 527 | |
| 528 | int tipc_bearer_setup(void) |
| 529 | { |
| 530 | dev_add_pack(&tipc_packet_type); |
| 531 | return register_netdevice_notifier(¬ifier); |
| 532 | } |
| 533 | |
| 534 | void tipc_bearer_cleanup(void) |
| 535 | { |
| 536 | unregister_netdevice_notifier(¬ifier); |
| 537 | dev_remove_pack(&tipc_packet_type); |
| 538 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 539 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 540 | void tipc_bearer_stop(void) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 541 | { |
| 542 | u32 i; |
| 543 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 544 | for (i = 0; i < MAX_BEARERS; i++) { |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 545 | if (tipc_bearers[i].active) |
Allan Stephens | ccc901e | 2010-10-14 13:58:26 +0000 | [diff] [blame] | 546 | bearer_disable(&tipc_bearers[i]); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 547 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 548 | } |