net/tipc/ib_media.c

   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 /* convert InfiniBand address to string */
  46 static int tipc_ib_addr2str(struct tipc_media_addr *a, char *str_buf,
  47                             int str_size)
  48 {
  49         if (str_size < 60)      /* 60 = 19 * strlen("xx:") + strlen("xx\0") */
  50                 return 1;
  51
  52         sprintf(str_buf, "%20phC", a->value);
  53
  54         return 0;
  55 }
  56
  57 /* convert InfiniBand address format to message header format */
  58 static int tipc_ib_addr2msg(struct tipc_media_addr *a, char *msg_area)
  59 {
  60         memset(msg_area, 0, TIPC_MEDIA_ADDR_SIZE);
  61         msg_area[TIPC_MEDIA_TYPE_OFFSET] = TIPC_MEDIA_TYPE_IB;
  62         memcpy(msg_area, a->value, INFINIBAND_ALEN);
  63         return 0;
  64 }
  65
  66 /* convert message header address format to InfiniBand format */
  67 static int tipc_ib_msg2addr(const struct tipc_bearer *tb_ptr,
  68                             struct tipc_media_addr *a, char *msg_area)
  69 {
  70         tipc_l2_media_addr_set(tb_ptr, a, msg_area);
  71         return 0;
  72 }
  73
  74 /* InfiniBand media registration info */
  75 struct tipc_media ib_media_info = {
  76         .send_msg       = tipc_l2_send_msg,
  77         .enable_media   = tipc_enable_l2_media,
  78         .disable_media  = tipc_disable_l2_media,
  79         .addr2str       = tipc_ib_addr2str,
  80         .addr2msg       = tipc_ib_addr2msg,
  81         .msg2addr       = tipc_ib_msg2addr,
  82         .priority       = TIPC_DEF_LINK_PRI,
  83         .tolerance      = TIPC_DEF_LINK_TOL,
  84         .window         = TIPC_DEF_LINK_WIN,
  85         .type_id        = TIPC_MEDIA_TYPE_IB,
  86         .hwaddr_len     = INFINIBAND_ALEN,
  87         .name           = "ib"
  88 };
  89