/*
* net / tipc / eth_media . c : Ethernet bearer support for TIPC
*
* Copyright ( c ) 2001 - 2007 , 2013 - 2014 , Ericsson AB
* Copyright ( c ) 2005 - 2008 , 2011 - 2013 , Wind River Systems
* All rights reserved .
*
* Redistribution and use in source and binary forms , with or without
* modification , are permitted provided that the following conditions are met :
*
* 1 . Redistributions of source code must retain the above copyright
* notice , this list of conditions and the following disclaimer .
* 2 . Redistributions in binary form must reproduce the above copyright
* notice , this list of conditions and the following disclaimer in the
* documentation and / or other materials provided with the distribution .
* 3 . Neither the names of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission .
*
* Alternatively , this software may be distributed under the terms of the
* GNU General Public License ( " GPL " ) version 2 as published by the Free
* Software Foundation .
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS " AS IS "
* AND ANY EXPRESS OR IMPLIED WARRANTIES , INCLUDING , BUT NOT LIMITED TO , THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED . IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT , INDIRECT , INCIDENTAL , SPECIAL , EXEMPLARY , OR
* CONSEQUENTIAL DAMAGES ( INCLUDING , BUT NOT LIMITED TO , PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES ; LOSS OF USE , DATA , OR PROFITS ; OR BUSINESS
* INTERRUPTION ) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY , WHETHER IN
* CONTRACT , STRICT LIABILITY , OR TORT ( INCLUDING NEGLIGENCE OR OTHERWISE )
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE , EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE .
*/
#include "core.h"
#include "bearer.h"
/* Convert Ethernet address (media address format) to string */
static int tipc_eth_addr2str(struct tipc_media_addr *addr,
char *strbuf, int bufsz)
{
if (bufsz < 18 ) /* 18 = strlen("aa:bb:cc:dd:ee:ff\0") */
return 1 ;
sprintf(strbuf, "%pM" , addr->value);
return 0 ;
}
/* Convert from media address format to discovery message addr format */
static int tipc_eth_addr2msg(char *msg, struct tipc_media_addr *addr)
{
memset(msg, 0 , TIPC_MEDIA_INFO_SIZE);
msg[TIPC_MEDIA_TYPE_OFFSET] = TIPC_MEDIA_TYPE_ETH;
memcpy(msg + TIPC_MEDIA_ADDR_OFFSET, addr->value, ETH_ALEN);
return 0 ;
}
/* Convert raw mac address format to media addr format */
static int tipc_eth_raw2addr(struct tipc_bearer *b,
struct tipc_media_addr *addr,
const char *msg)
{
memset(addr, 0 , sizeof (*addr));
ether_addr_copy(addr->value, msg);
addr->media_id = TIPC_MEDIA_TYPE_ETH;
addr->broadcast = is_broadcast_ether_addr(addr->value);
return 0 ;
}
/* Convert discovery msg addr format to Ethernet media addr format */
static int tipc_eth_msg2addr(struct tipc_bearer *b,
struct tipc_media_addr *addr,
char *msg)
{
/* Skip past preamble: */
msg += TIPC_MEDIA_ADDR_OFFSET;
return tipc_eth_raw2addr(b, addr, msg);
}
/* Ethernet media registration info */
struct tipc_media eth_media_info = {
.send_msg = tipc_l2_send_msg,
.enable_media = tipc_enable_l2_media,
.disable_media = tipc_disable_l2_media,
.addr2str = tipc_eth_addr2str,
.addr2msg = tipc_eth_addr2msg,
.msg2addr = tipc_eth_msg2addr,
.raw2addr = tipc_eth_raw2addr,
.priority = TIPC_DEF_LINK_PRI,
.tolerance = TIPC_DEF_LINK_TOL,
.min_win = TIPC_DEF_LINK_WIN,
.max_win = TIPC_MAX_LINK_WIN,
.type_id = TIPC_MEDIA_TYPE_ETH,
.hwaddr_len = ETH_ALEN,
.name = "eth"
};
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