Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 1 | /* |
| 2 | * net/tipc/eth_media.c: Ethernet bearer support for TIPC |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 3 | * |
Allan Stephens | f3ec75f | 2007-06-10 17:24:20 -0700 | [diff] [blame] | 4 | * Copyright (c) 2001-2007, Ericsson AB |
Allan Stephens | bcd326e | 2011-05-27 13:59:17 -0400 | [diff] [blame] | 5 | * Copyright (c) 2005-2008, 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 | |
Allan Stephens | d265fef | 2010-11-30 12:00:53 +0000 | [diff] [blame] | 37 | #include "core.h" |
| 38 | #include "bearer.h" |
| 39 | |
Allan Stephens | 909234c | 2011-05-27 15:09:40 -0400 | [diff] [blame] | 40 | #define MAX_ETH_BEARERS MAX_BEARERS |
Per Liden | 16cb4b3 | 2006-01-13 22:22:22 +0100 | [diff] [blame] | 41 | #define ETH_LINK_PRIORITY TIPC_DEF_LINK_PRI |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 42 | #define ETH_LINK_TOLERANCE TIPC_DEF_LINK_TOL |
Per Liden | 16cb4b3 | 2006-01-13 22:22:22 +0100 | [diff] [blame] | 43 | #define ETH_LINK_WINDOW TIPC_DEF_LINK_WIN |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 44 | |
| 45 | /** |
| 46 | * struct eth_bearer - Ethernet bearer data structure |
| 47 | * @bearer: ptr to associated "generic" bearer structure |
| 48 | * @dev: ptr to associated Ethernet network device |
| 49 | * @tipc_packet_type: used in binding TIPC to Ethernet driver |
| 50 | */ |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 51 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 52 | struct eth_bearer { |
| 53 | struct tipc_bearer *bearer; |
| 54 | struct net_device *dev; |
| 55 | struct packet_type tipc_packet_type; |
| 56 | }; |
| 57 | |
| 58 | static struct eth_bearer eth_bearers[MAX_ETH_BEARERS]; |
Allan Stephens | e3ec9c7 | 2010-12-31 18:59:34 +0000 | [diff] [blame] | 59 | static int eth_started; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 60 | static struct notifier_block notifier; |
| 61 | |
| 62 | /** |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 63 | * send_msg - send a TIPC message out over an Ethernet interface |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 64 | */ |
| 65 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 66 | static int send_msg(struct sk_buff *buf, struct tipc_bearer *tb_ptr, |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 67 | struct tipc_media_addr *dest) |
| 68 | { |
| 69 | struct sk_buff *clone; |
| 70 | struct net_device *dev; |
Allan Stephens | 9fbfca0 | 2010-09-03 08:33:40 +0000 | [diff] [blame] | 71 | int delta; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 72 | |
| 73 | clone = skb_clone(buf, GFP_ATOMIC); |
Allan Stephens | 9fbfca0 | 2010-09-03 08:33:40 +0000 | [diff] [blame] | 74 | if (!clone) |
| 75 | return 0; |
| 76 | |
| 77 | dev = ((struct eth_bearer *)(tb_ptr->usr_handle))->dev; |
| 78 | delta = dev->hard_header_len - skb_headroom(buf); |
| 79 | |
| 80 | if ((delta > 0) && |
| 81 | pskb_expand_head(clone, SKB_DATA_ALIGN(delta), 0, GFP_ATOMIC)) { |
| 82 | kfree_skb(clone); |
| 83 | return 0; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 84 | } |
Allan Stephens | 9fbfca0 | 2010-09-03 08:33:40 +0000 | [diff] [blame] | 85 | |
| 86 | skb_reset_network_header(clone); |
| 87 | clone->dev = dev; |
| 88 | dev_hard_header(clone, dev, ETH_P_TIPC, &dest->dev_addr.eth_addr, |
| 89 | dev->dev_addr, clone->len); |
| 90 | dev_queue_xmit(clone); |
Allan Stephens | 0e35fd5 | 2008-07-14 22:44:01 -0700 | [diff] [blame] | 91 | return 0; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 92 | } |
| 93 | |
| 94 | /** |
| 95 | * recv_msg - handle incoming TIPC message from an Ethernet interface |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 96 | * |
Allan Stephens | f3ec75f | 2007-06-10 17:24:20 -0700 | [diff] [blame] | 97 | * Accept only packets explicitly sent to this node, or broadcast packets; |
| 98 | * ignores packets sent using Ethernet multicast, and traffic sent to other |
| 99 | * nodes (which can happen if interface is running in promiscuous mode). |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 100 | */ |
| 101 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 102 | static int recv_msg(struct sk_buff *buf, struct net_device *dev, |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 103 | struct packet_type *pt, struct net_device *orig_dev) |
| 104 | { |
| 105 | struct eth_bearer *eb_ptr = (struct eth_bearer *)pt->af_packet_priv; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 106 | |
YOSHIFUJI Hideaki | 721499e | 2008-07-19 22:34:43 -0700 | [diff] [blame] | 107 | if (!net_eq(dev_net(dev), &init_net)) { |
Eric W. Biederman | e730c15 | 2007-09-17 11:53:39 -0700 | [diff] [blame] | 108 | kfree_skb(buf); |
| 109 | return 0; |
| 110 | } |
| 111 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 112 | if (likely(eb_ptr->bearer)) { |
Allan Stephens | f3ec75f | 2007-06-10 17:24:20 -0700 | [diff] [blame] | 113 | if (likely(buf->pkt_type <= PACKET_BROADCAST)) { |
Paul Gortmaker | b2abd4c | 2010-09-08 13:31:24 +0000 | [diff] [blame] | 114 | buf->next = NULL; |
| 115 | tipc_recv_msg(buf, eb_ptr->bearer); |
| 116 | return 0; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 117 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 118 | } |
Jon Maloy | 5e3c885 | 2006-06-25 23:36:43 -0700 | [diff] [blame] | 119 | kfree_skb(buf); |
Allan Stephens | 0e35fd5 | 2008-07-14 22:44:01 -0700 | [diff] [blame] | 120 | return 0; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 121 | } |
| 122 | |
| 123 | /** |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 124 | * enable_bearer - attach TIPC bearer to an Ethernet interface |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 125 | */ |
| 126 | |
| 127 | static int enable_bearer(struct tipc_bearer *tb_ptr) |
| 128 | { |
Jon Paul Maloy | cb283ea | 2007-05-23 15:11:15 -0700 | [diff] [blame] | 129 | struct net_device *dev = NULL; |
| 130 | struct net_device *pdev = NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 131 | struct eth_bearer *eb_ptr = ð_bearers[0]; |
| 132 | struct eth_bearer *stop = ð_bearers[MAX_ETH_BEARERS]; |
| 133 | char *driver_name = strchr((const char *)tb_ptr->name, ':') + 1; |
Allan Stephens | d1fb627 | 2010-09-03 08:33:42 +0000 | [diff] [blame] | 134 | int pending_dev = 0; |
| 135 | |
| 136 | /* Find unused Ethernet bearer structure */ |
| 137 | |
| 138 | while (eb_ptr->dev) { |
| 139 | if (!eb_ptr->bearer) |
| 140 | pending_dev++; |
| 141 | if (++eb_ptr == stop) |
| 142 | return pending_dev ? -EAGAIN : -EDQUOT; |
| 143 | } |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 144 | |
| 145 | /* Find device with specified name */ |
Jon Paul Maloy | cb283ea | 2007-05-23 15:11:15 -0700 | [diff] [blame] | 146 | |
Allan Stephens | bcd326e | 2011-05-27 13:59:17 -0400 | [diff] [blame] | 147 | read_lock(&dev_base_lock); |
Allan Stephens | 0e65967 | 2010-12-31 18:59:32 +0000 | [diff] [blame] | 148 | for_each_netdev(&init_net, pdev) { |
Jon Paul Maloy | cb283ea | 2007-05-23 15:11:15 -0700 | [diff] [blame] | 149 | if (!strncmp(pdev->name, driver_name, IFNAMSIZ)) { |
Pavel Emelianov | 7562f87 | 2007-05-03 15:13:45 -0700 | [diff] [blame] | 150 | dev = pdev; |
Allan Stephens | bcd326e | 2011-05-27 13:59:17 -0400 | [diff] [blame] | 151 | dev_hold(dev); |
Pavel Emelianov | 7562f87 | 2007-05-03 15:13:45 -0700 | [diff] [blame] | 152 | break; |
| 153 | } |
Jon Paul Maloy | cb283ea | 2007-05-23 15:11:15 -0700 | [diff] [blame] | 154 | } |
Allan Stephens | bcd326e | 2011-05-27 13:59:17 -0400 | [diff] [blame] | 155 | read_unlock(&dev_base_lock); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 156 | if (!dev) |
| 157 | return -ENODEV; |
| 158 | |
Allan Stephens | 18abf0f | 2011-05-27 14:02:48 -0400 | [diff] [blame] | 159 | /* Create Ethernet bearer for device */ |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 160 | |
Allan Stephens | 18abf0f | 2011-05-27 14:02:48 -0400 | [diff] [blame] | 161 | eb_ptr->dev = dev; |
| 162 | eb_ptr->tipc_packet_type.type = htons(ETH_P_TIPC); |
| 163 | eb_ptr->tipc_packet_type.dev = dev; |
| 164 | eb_ptr->tipc_packet_type.func = recv_msg; |
| 165 | eb_ptr->tipc_packet_type.af_packet_priv = eb_ptr; |
| 166 | INIT_LIST_HEAD(&(eb_ptr->tipc_packet_type.list)); |
| 167 | dev_add_pack(&eb_ptr->tipc_packet_type); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 168 | |
| 169 | /* Associate TIPC bearer with Ethernet bearer */ |
| 170 | |
| 171 | eb_ptr->bearer = tb_ptr; |
| 172 | tb_ptr->usr_handle = (void *)eb_ptr; |
| 173 | tb_ptr->mtu = dev->mtu; |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 174 | tb_ptr->blocked = 0; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 175 | tb_ptr->addr.type = htonl(TIPC_MEDIA_TYPE_ETH); |
Jiri Pirko | 3a6d54c | 2009-05-11 23:37:15 +0000 | [diff] [blame] | 176 | memcpy(&tb_ptr->addr.dev_addr, dev->dev_addr, ETH_ALEN); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 177 | return 0; |
| 178 | } |
| 179 | |
| 180 | /** |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 181 | * disable_bearer - detach TIPC bearer from an Ethernet interface |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 182 | * |
| 183 | * We really should do dev_remove_pack() here, but this function can not be |
| 184 | * called at tasklet level. => Use eth_bearer->bearer as a flag to throw away |
| 185 | * incoming buffers, & postpone dev_remove_pack() to eth_media_stop() on exit. |
| 186 | */ |
| 187 | |
| 188 | static void disable_bearer(struct tipc_bearer *tb_ptr) |
| 189 | { |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 190 | ((struct eth_bearer *)tb_ptr->usr_handle)->bearer = NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 191 | } |
| 192 | |
| 193 | /** |
| 194 | * recv_notification - handle device updates from OS |
| 195 | * |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 196 | * Change the state of the Ethernet bearer (if any) associated with the |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 197 | * specified device. |
| 198 | */ |
| 199 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 200 | static int recv_notification(struct notifier_block *nb, unsigned long evt, |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 201 | void *dv) |
| 202 | { |
| 203 | struct net_device *dev = (struct net_device *)dv; |
| 204 | struct eth_bearer *eb_ptr = ð_bearers[0]; |
| 205 | struct eth_bearer *stop = ð_bearers[MAX_ETH_BEARERS]; |
| 206 | |
YOSHIFUJI Hideaki | 721499e | 2008-07-19 22:34:43 -0700 | [diff] [blame] | 207 | if (!net_eq(dev_net(dev), &init_net)) |
Eric W. Biederman | e9dc865 | 2007-09-12 13:02:17 +0200 | [diff] [blame] | 208 | return NOTIFY_DONE; |
| 209 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 210 | while ((eb_ptr->dev != dev)) { |
| 211 | if (++eb_ptr == stop) |
| 212 | return NOTIFY_DONE; /* couldn't find device */ |
| 213 | } |
| 214 | if (!eb_ptr->bearer) |
| 215 | return NOTIFY_DONE; /* bearer had been disabled */ |
| 216 | |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 217 | eb_ptr->bearer->mtu = dev->mtu; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 218 | |
| 219 | switch (evt) { |
| 220 | case NETDEV_CHANGE: |
| 221 | if (netif_carrier_ok(dev)) |
| 222 | tipc_continue(eb_ptr->bearer); |
| 223 | else |
| 224 | tipc_block_bearer(eb_ptr->bearer->name); |
| 225 | break; |
| 226 | case NETDEV_UP: |
| 227 | tipc_continue(eb_ptr->bearer); |
| 228 | break; |
| 229 | case NETDEV_DOWN: |
| 230 | tipc_block_bearer(eb_ptr->bearer->name); |
| 231 | break; |
| 232 | case NETDEV_CHANGEMTU: |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 233 | case NETDEV_CHANGEADDR: |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 234 | tipc_block_bearer(eb_ptr->bearer->name); |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 235 | tipc_continue(eb_ptr->bearer); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 236 | break; |
| 237 | case NETDEV_UNREGISTER: |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 238 | case NETDEV_CHANGENAME: |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 239 | tipc_disable_bearer(eb_ptr->bearer->name); |
| 240 | break; |
| 241 | } |
| 242 | return NOTIFY_OK; |
| 243 | } |
| 244 | |
| 245 | /** |
| 246 | * eth_addr2str - convert Ethernet address to string |
| 247 | */ |
| 248 | |
| 249 | static char *eth_addr2str(struct tipc_media_addr *a, char *str_buf, int str_size) |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 250 | { |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 251 | unchar *addr = (unchar *)&a->dev_addr; |
| 252 | |
| 253 | if (str_size < 18) |
| 254 | *str_buf = '\0'; |
| 255 | else |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 256 | sprintf(str_buf, "%pM", addr); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 257 | return str_buf; |
| 258 | } |
| 259 | |
| 260 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 261 | * tipc_eth_media_start - activate Ethernet bearer support |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 262 | * |
| 263 | * Register Ethernet media type with TIPC bearer code. Also register |
| 264 | * with OS for notifications about device state changes. |
| 265 | */ |
| 266 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 267 | int tipc_eth_media_start(void) |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 268 | { |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 269 | struct tipc_media_addr bcast_addr; |
| 270 | int res; |
| 271 | |
| 272 | if (eth_started) |
| 273 | return -EINVAL; |
| 274 | |
Allan Stephens | 4938450 | 2006-06-25 23:38:29 -0700 | [diff] [blame] | 275 | bcast_addr.type = htonl(TIPC_MEDIA_TYPE_ETH); |
| 276 | memset(&bcast_addr.dev_addr, 0xff, ETH_ALEN); |
| 277 | |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 278 | memset(eth_bearers, 0, sizeof(eth_bearers)); |
| 279 | |
| 280 | res = tipc_register_media(TIPC_MEDIA_TYPE_ETH, "eth", |
YOSHIFUJI Hideaki | c430728 | 2007-02-09 23:25:21 +0900 | [diff] [blame] | 281 | enable_bearer, disable_bearer, send_msg, |
| 282 | eth_addr2str, &bcast_addr, ETH_LINK_PRIORITY, |
Per Liden | 16cb4b3 | 2006-01-13 22:22:22 +0100 | [diff] [blame] | 283 | ETH_LINK_TOLERANCE, ETH_LINK_WINDOW); |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 284 | if (res) |
| 285 | return res; |
| 286 | |
| 287 | notifier.notifier_call = &recv_notification; |
| 288 | notifier.priority = 0; |
| 289 | res = register_netdevice_notifier(¬ifier); |
| 290 | if (!res) |
| 291 | eth_started = 1; |
| 292 | return res; |
| 293 | } |
| 294 | |
| 295 | /** |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 296 | * tipc_eth_media_stop - deactivate Ethernet bearer support |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 297 | */ |
| 298 | |
Per Liden | 4323add | 2006-01-18 00:38:21 +0100 | [diff] [blame] | 299 | void tipc_eth_media_stop(void) |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 300 | { |
| 301 | int i; |
| 302 | |
| 303 | if (!eth_started) |
| 304 | return; |
| 305 | |
| 306 | unregister_netdevice_notifier(¬ifier); |
| 307 | for (i = 0; i < MAX_ETH_BEARERS ; i++) { |
| 308 | if (eth_bearers[i].bearer) { |
| 309 | eth_bearers[i].bearer->blocked = 1; |
Sam Ravnborg | 1fc54d8 | 2006-03-20 22:36:47 -0800 | [diff] [blame] | 310 | eth_bearers[i].bearer = NULL; |
Per Liden | b97bf3f | 2006-01-02 19:04:38 +0100 | [diff] [blame] | 311 | } |
| 312 | if (eth_bearers[i].dev) { |
| 313 | dev_remove_pack(ð_bearers[i].tipc_packet_type); |
| 314 | dev_put(eth_bearers[i].dev); |
| 315 | } |
| 316 | } |
| 317 | memset(ð_bearers, 0, sizeof(eth_bearers)); |
| 318 | eth_started = 0; |
| 319 | } |