1b97bf3fdSPer Liden /*
2b97bf3fdSPer Liden * net/tipc/eth_media.c: Ethernet bearer support for TIPC
3b97bf3fdSPer Liden *
438504c28SJon Paul Maloy * Copyright (c) 2001-2007, 2013-2014, Ericsson AB
54babbaa8SYing Xue * Copyright (c) 2005-2008, 2011-2013, Wind River Systems
6b97bf3fdSPer Liden * All rights reserved.
7b97bf3fdSPer Liden *
8b97bf3fdSPer Liden * Redistribution and use in source and binary forms, with or without
9b97bf3fdSPer Liden * modification, are permitted provided that the following conditions are met:
10b97bf3fdSPer Liden *
119ea1fd3cSPer Liden * 1. Redistributions of source code must retain the above copyright
129ea1fd3cSPer Liden * notice, this list of conditions and the following disclaimer.
139ea1fd3cSPer Liden * 2. Redistributions in binary form must reproduce the above copyright
149ea1fd3cSPer Liden * notice, this list of conditions and the following disclaimer in the
159ea1fd3cSPer Liden * documentation and/or other materials provided with the distribution.
169ea1fd3cSPer Liden * 3. Neither the names of the copyright holders nor the names of its
179ea1fd3cSPer Liden * contributors may be used to endorse or promote products derived from
189ea1fd3cSPer Liden * this software without specific prior written permission.
199ea1fd3cSPer Liden *
209ea1fd3cSPer Liden * Alternatively, this software may be distributed under the terms of the
219ea1fd3cSPer Liden * GNU General Public License ("GPL") version 2 as published by the Free
229ea1fd3cSPer Liden * Software Foundation.
23b97bf3fdSPer Liden *
24b97bf3fdSPer Liden * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
25b97bf3fdSPer Liden * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26b97bf3fdSPer Liden * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27b97bf3fdSPer Liden * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
28b97bf3fdSPer Liden * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29b97bf3fdSPer Liden * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30b97bf3fdSPer Liden * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
31b97bf3fdSPer Liden * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
32b97bf3fdSPer Liden * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33b97bf3fdSPer Liden * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34b97bf3fdSPer Liden * POSSIBILITY OF SUCH DAMAGE.
35b97bf3fdSPer Liden */
36b97bf3fdSPer Liden
37d265fef6SAllan Stephens #include "core.h"
38d265fef6SAllan Stephens #include "bearer.h"
39d265fef6SAllan Stephens
4038504c28SJon Paul Maloy /* Convert Ethernet address (media address format) to string */
tipc_eth_addr2str(struct tipc_media_addr * addr,char * strbuf,int bufsz)4138504c28SJon Paul Maloy static int tipc_eth_addr2str(struct tipc_media_addr *addr,
4238504c28SJon Paul Maloy char *strbuf, int bufsz)
43b97bf3fdSPer Liden {
4438504c28SJon Paul Maloy if (bufsz < 18) /* 18 = strlen("aa:bb:cc:dd:ee:ff\0") */
45c61b666eSAllan Stephens return 1;
46c61b666eSAllan Stephens
4738504c28SJon Paul Maloy sprintf(strbuf, "%pM", addr->value);
48c61b666eSAllan Stephens return 0;
49b97bf3fdSPer Liden }
50b97bf3fdSPer Liden
5138504c28SJon Paul Maloy /* Convert from media address format to discovery message addr format */
tipc_eth_addr2msg(char * msg,struct tipc_media_addr * addr)5238504c28SJon Paul Maloy static int tipc_eth_addr2msg(char *msg, struct tipc_media_addr *addr)
534d163a32SAllan Stephens {
5491e2eb56SErik Hugne memset(msg, 0, TIPC_MEDIA_INFO_SIZE);
5538504c28SJon Paul Maloy msg[TIPC_MEDIA_TYPE_OFFSET] = TIPC_MEDIA_TYPE_ETH;
56d76a436dSErik Hugne memcpy(msg + TIPC_MEDIA_ADDR_OFFSET, addr->value, ETH_ALEN);
574d163a32SAllan Stephens return 0;
584d163a32SAllan Stephens }
594d163a32SAllan Stephens
6038504c28SJon Paul Maloy /* Convert raw mac address format to media addr format */
tipc_eth_raw2addr(struct tipc_bearer * b,struct tipc_media_addr * addr,const char * msg)6138504c28SJon Paul Maloy static int tipc_eth_raw2addr(struct tipc_bearer *b,
6238504c28SJon Paul Maloy struct tipc_media_addr *addr,
63*6cf86280SJakub Kicinski const char *msg)
644d163a32SAllan Stephens {
6538504c28SJon Paul Maloy memset(addr, 0, sizeof(*addr));
6638504c28SJon Paul Maloy ether_addr_copy(addr->value, msg);
6738504c28SJon Paul Maloy addr->media_id = TIPC_MEDIA_TYPE_ETH;
68fbc97de8SHuang Guobin addr->broadcast = is_broadcast_ether_addr(addr->value);
694d163a32SAllan Stephens return 0;
704d163a32SAllan Stephens }
714d163a32SAllan Stephens
7238504c28SJon Paul Maloy /* Convert discovery msg addr format to Ethernet media addr format */
tipc_eth_msg2addr(struct tipc_bearer * b,struct tipc_media_addr * addr,char * msg)7338504c28SJon Paul Maloy static int tipc_eth_msg2addr(struct tipc_bearer *b,
7438504c28SJon Paul Maloy struct tipc_media_addr *addr,
7538504c28SJon Paul Maloy char *msg)
7638504c28SJon Paul Maloy {
7738504c28SJon Paul Maloy /* Skip past preamble: */
78d76a436dSErik Hugne msg += TIPC_MEDIA_ADDR_OFFSET;
7938504c28SJon Paul Maloy return tipc_eth_raw2addr(b, addr, msg);
8038504c28SJon Paul Maloy }
8138504c28SJon Paul Maloy
82e4d050cbSYing Xue /* Ethernet media registration info */
835702dbabSJon Paul Maloy struct tipc_media eth_media_info = {
84e4d050cbSYing Xue .send_msg = tipc_l2_send_msg,
85e4d050cbSYing Xue .enable_media = tipc_enable_l2_media,
86e4d050cbSYing Xue .disable_media = tipc_disable_l2_media,
87e4d050cbSYing Xue .addr2str = tipc_eth_addr2str,
88e4d050cbSYing Xue .addr2msg = tipc_eth_addr2msg,
89e4d050cbSYing Xue .msg2addr = tipc_eth_msg2addr,
9038504c28SJon Paul Maloy .raw2addr = tipc_eth_raw2addr,
91706767daSAllan Stephens .priority = TIPC_DEF_LINK_PRI,
92706767daSAllan Stephens .tolerance = TIPC_DEF_LINK_TOL,
9316ad3f40SJon Maloy .min_win = TIPC_DEF_LINK_WIN,
9416ad3f40SJon Maloy .max_win = TIPC_MAX_LINK_WIN,
95706767daSAllan Stephens .type_id = TIPC_MEDIA_TYPE_ETH,
96e4d050cbSYing Xue .hwaddr_len = ETH_ALEN,
97706767daSAllan Stephens .name = "eth"
98706767daSAllan Stephens };
99