cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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eth_media.c (3677B)

      1/*
      2 * net/tipc/eth_media.c: Ethernet bearer support for TIPC
      3 *
      4 * Copyright (c) 2001-2007, 2013-2014, Ericsson AB
      5 * Copyright (c) 2005-2008, 2011-2013, Wind River Systems
      6 * All rights reserved.
      7 *
      8 * Redistribution and use in source and binary forms, with or without
      9 * modification, are permitted provided that the following conditions are met:
     10 *
     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.
     19 *
     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
     34 * POSSIBILITY OF SUCH DAMAGE.
     35 */
     36
     37#include "core.h"
     38#include "bearer.h"
     39
     40/* Convert Ethernet address (media address format) to string */
     41static int tipc_eth_addr2str(struct tipc_media_addr *addr,
     42			     char *strbuf, int bufsz)
     43{
     44	if (bufsz < 18)	/* 18 = strlen("aa:bb:cc:dd:ee:ff\0") */
     45		return 1;
     46
     47	sprintf(strbuf, "%pM", addr->value);
     48	return 0;
     49}
     50
     51/* Convert from media address format to discovery message addr format */
     52static int tipc_eth_addr2msg(char *msg, struct tipc_media_addr *addr)
     53{
     54	memset(msg, 0, TIPC_MEDIA_INFO_SIZE);
     55	msg[TIPC_MEDIA_TYPE_OFFSET] = TIPC_MEDIA_TYPE_ETH;
     56	memcpy(msg + TIPC_MEDIA_ADDR_OFFSET, addr->value, ETH_ALEN);
     57	return 0;
     58}
     59
     60/* Convert raw mac address format to media addr format */
     61static int tipc_eth_raw2addr(struct tipc_bearer *b,
     62			     struct tipc_media_addr *addr,
     63			     const char *msg)
     64{
     65	memset(addr, 0, sizeof(*addr));
     66	ether_addr_copy(addr->value, msg);
     67	addr->media_id = TIPC_MEDIA_TYPE_ETH;
     68	addr->broadcast = is_broadcast_ether_addr(addr->value);
     69	return 0;
     70}
     71
     72/* Convert discovery msg addr format to Ethernet media addr format */
     73static int tipc_eth_msg2addr(struct tipc_bearer *b,
     74			     struct tipc_media_addr *addr,
     75			     char *msg)
     76{
     77	/* Skip past preamble: */
     78	msg += TIPC_MEDIA_ADDR_OFFSET;
     79	return tipc_eth_raw2addr(b, addr, msg);
     80}
     81
     82/* Ethernet media registration info */
     83struct tipc_media eth_media_info = {
     84	.send_msg	= tipc_l2_send_msg,
     85	.enable_media	= tipc_enable_l2_media,
     86	.disable_media	= tipc_disable_l2_media,
     87	.addr2str	= tipc_eth_addr2str,
     88	.addr2msg	= tipc_eth_addr2msg,
     89	.msg2addr	= tipc_eth_msg2addr,
     90	.raw2addr	= tipc_eth_raw2addr,
     91	.priority	= TIPC_DEF_LINK_PRI,
     92	.tolerance	= TIPC_DEF_LINK_TOL,
     93	.min_win	= TIPC_DEF_LINK_WIN,
     94	.max_win	= TIPC_MAX_LINK_WIN,
     95	.type_id	= TIPC_MEDIA_TYPE_ETH,
     96	.hwaddr_len	= ETH_ALEN,
     97	.name		= "eth"
     98};