cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

ib_media.c (3792B)

      1/*
      2 * net/tipc/ib_media.c: Infiniband bearer support for TIPC
      3 *
      4 * Copyright (c) 2013 Patrick McHardy <kaber@trash.net>
      5 *
      6 * Based on eth_media.c, which carries the following copyright notice:
      7 *
      8 * Copyright (c) 2001-2007, Ericsson AB
      9 * Copyright (c) 2005-2008, 2011, Wind River Systems
     10 * All rights reserved.
     11 *
     12 * Redistribution and use in source and binary forms, with or without
     13 * modification, are permitted provided that the following conditions are met:
     14 *
     15 * 1. Redistributions of source code must retain the above copyright
     16 *    notice, this list of conditions and the following disclaimer.
     17 * 2. Redistributions in binary form must reproduce the above copyright
     18 *    notice, this list of conditions and the following disclaimer in the
     19 *    documentation and/or other materials provided with the distribution.
     20 * 3. Neither the names of the copyright holders nor the names of its
     21 *    contributors may be used to endorse or promote products derived from
     22 *    this software without specific prior written permission.
     23 *
     24 * Alternatively, this software may be distributed under the terms of the
     25 * GNU General Public License ("GPL") version 2 as published by the Free
     26 * Software Foundation.
     27 *
     28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
     29 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     31 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
     32 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     38 * POSSIBILITY OF SUCH DAMAGE.
     39 */
     40
     41#include <linux/if_infiniband.h>
     42#include "core.h"
     43#include "bearer.h"
     44
     45#define TIPC_MAX_IB_LINK_WIN 500
     46
     47/* convert InfiniBand address (media address format) media address to string */
     48static int tipc_ib_addr2str(struct tipc_media_addr *a, char *str_buf,
     49			    int str_size)
     50{
     51	if (str_size < 60)	/* 60 = 19 * strlen("xx:") + strlen("xx\0") */
     52		return 1;
     53
     54	sprintf(str_buf, "%20phC", a->value);
     55
     56	return 0;
     57}
     58
     59/* Convert from media address format to discovery message addr format */
     60static int tipc_ib_addr2msg(char *msg, struct tipc_media_addr *addr)
     61{
     62	memset(msg, 0, TIPC_MEDIA_INFO_SIZE);
     63	memcpy(msg, addr->value, INFINIBAND_ALEN);
     64	return 0;
     65}
     66
     67/* Convert raw InfiniBand address format to media addr format */
     68static int tipc_ib_raw2addr(struct tipc_bearer *b,
     69			    struct tipc_media_addr *addr,
     70			    const char *msg)
     71{
     72	memset(addr, 0, sizeof(*addr));
     73	memcpy(addr->value, msg, INFINIBAND_ALEN);
     74	addr->media_id = TIPC_MEDIA_TYPE_IB;
     75	addr->broadcast = !memcmp(msg, b->bcast_addr.value,
     76				  INFINIBAND_ALEN);
     77	return 0;
     78}
     79
     80/* Convert discovery msg addr format to InfiniBand media addr format */
     81static int tipc_ib_msg2addr(struct tipc_bearer *b,
     82			    struct tipc_media_addr *addr,
     83			    char *msg)
     84{
     85	return tipc_ib_raw2addr(b, addr, msg);
     86}
     87
     88/* InfiniBand media registration info */
     89struct tipc_media ib_media_info = {
     90	.send_msg	= tipc_l2_send_msg,
     91	.enable_media	= tipc_enable_l2_media,
     92	.disable_media	= tipc_disable_l2_media,
     93	.addr2str	= tipc_ib_addr2str,
     94	.addr2msg	= tipc_ib_addr2msg,
     95	.msg2addr	= tipc_ib_msg2addr,
     96	.raw2addr	= tipc_ib_raw2addr,
     97	.priority	= TIPC_DEF_LINK_PRI,
     98	.tolerance	= TIPC_DEF_LINK_TOL,
     99	.min_win	= TIPC_DEF_LINK_WIN,
    100	.max_win	= TIPC_MAX_IB_LINK_WIN,
    101	.type_id	= TIPC_MEDIA_TYPE_IB,
    102	.hwaddr_len	= INFINIBAND_ALEN,
    103	.name		= "ib"
    104};