/*
   * net/tipc/ib_media.c: Infiniband bearer support for TIPC
   *
   * Copyright (c) 2013 Patrick McHardy <kaber@trash.net>
   *
   * Based on eth_media.c, which carries the following copyright notice:
   *
   * Copyright (c) 2001-2007, Ericsson AB
   * Copyright (c) 2005-2008, 2011, 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 <linux/if_infiniband.h>
  #include "core.h"
  #include "bearer.h"

  /* convert InfiniBand address (media address format) media address to string */

  static int tipc_ib_addr2str(struct tipc_media_addr *a, char *str_buf,
  			    int str_size)

  {
  	if (str_size < 60)	/* 60 = 19 * strlen("xx:") + strlen("xx\0") */
  		return 1;

  	sprintf(str_buf, "%20phC", a->value);

  
  	return 0;
  }

  /* Convert from media address format to discovery message addr format */
  static int tipc_ib_addr2msg(char *msg, struct tipc_media_addr *addr)

  {

  	memset(msg, 0, TIPC_MEDIA_INFO_SIZE);

  	memcpy(msg, addr->value, INFINIBAND_ALEN);

  	return 0;
  }

  /* Convert raw InfiniBand address format to media addr format */
  static int tipc_ib_raw2addr(struct tipc_bearer *b,
  			    struct tipc_media_addr *addr,
  			    char *msg)

  {

  	memset(addr, 0, sizeof(*addr));
  	memcpy(addr->value, msg, INFINIBAND_ALEN);
  	addr->media_id = TIPC_MEDIA_TYPE_IB;
  	addr->broadcast = !memcmp(msg, b->bcast_addr.value,
  				  INFINIBAND_ALEN);

  	return 0;
  }

  /* Convert discovery msg addr format to InfiniBand media addr format */
  static int tipc_ib_msg2addr(struct tipc_bearer *b,
  			    struct tipc_media_addr *addr,
  			    char *msg)
  {
  	return tipc_ib_raw2addr(b, addr, msg);
  }

  /* InfiniBand media registration info */

  struct tipc_media ib_media_info = {

  	.send_msg	= tipc_l2_send_msg,
  	.enable_media	= tipc_enable_l2_media,
  	.disable_media	= tipc_disable_l2_media,
  	.addr2str	= tipc_ib_addr2str,
  	.addr2msg	= tipc_ib_addr2msg,
  	.msg2addr	= tipc_ib_msg2addr,

  	.raw2addr	= tipc_ib_raw2addr,

  	.priority	= TIPC_DEF_LINK_PRI,
  	.tolerance	= TIPC_DEF_LINK_TOL,
  	.window		= TIPC_DEF_LINK_WIN,
  	.type_id	= TIPC_MEDIA_TYPE_IB,

  	.hwaddr_len	= INFINIBAND_ALEN,

  	.name		= "ib"
  };