mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-12 13:55:32 +00:00
91e2eb5684
The TIPC_MEDIA_ADDR_SIZE and TIPC_MEDIA_ADDR_OFFSET names are misleading, as they actually define the size and offset of the whole media info field and not the address part. This patch does not have any functional changes. Signed-off-by: Erik Hugne <erik.hugne@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
101 lines
3.7 KiB
C
101 lines
3.7 KiB
C
/*
|
|
* 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"
|
|
|
|
#define ETH_ADDR_OFFSET 4 /* MAC addr position inside address field */
|
|
|
|
/* 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 + ETH_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,
|
|
char *msg)
|
|
{
|
|
char bcast_mac[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
|
|
|
|
memset(addr, 0, sizeof(*addr));
|
|
ether_addr_copy(addr->value, msg);
|
|
addr->media_id = TIPC_MEDIA_TYPE_ETH;
|
|
addr->broadcast = !memcmp(addr->value, bcast_mac, ETH_ALEN);
|
|
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 += ETH_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,
|
|
.window = TIPC_DEF_LINK_WIN,
|
|
.type_id = TIPC_MEDIA_TYPE_ETH,
|
|
.hwaddr_len = ETH_ALEN,
|
|
.name = "eth"
|
|
};
|