105 строки
3.7 KiB
C
105 строки
3.7 KiB
C
/*
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* net/tipc/ib_media.c: Infiniband bearer support for TIPC
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*
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* Copyright (c) 2013 Patrick McHardy <kaber@trash.net>
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*
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* Based on eth_media.c, which carries the following copyright notice:
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*
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* Copyright (c) 2001-2007, Ericsson AB
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* Copyright (c) 2005-2008, 2011, Wind River Systems
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the names of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <linux/if_infiniband.h>
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#include "core.h"
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#include "bearer.h"
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#define TIPC_MAX_IB_LINK_WIN 500
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/* convert InfiniBand address (media address format) media address to string */
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static int tipc_ib_addr2str(struct tipc_media_addr *a, char *str_buf,
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int str_size)
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{
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if (str_size < 60) /* 60 = 19 * strlen("xx:") + strlen("xx\0") */
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return 1;
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sprintf(str_buf, "%20phC", a->value);
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return 0;
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}
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/* Convert from media address format to discovery message addr format */
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static int tipc_ib_addr2msg(char *msg, struct tipc_media_addr *addr)
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{
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memset(msg, 0, TIPC_MEDIA_INFO_SIZE);
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memcpy(msg, addr->value, INFINIBAND_ALEN);
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return 0;
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}
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/* Convert raw InfiniBand address format to media addr format */
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static int tipc_ib_raw2addr(struct tipc_bearer *b,
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struct tipc_media_addr *addr,
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const char *msg)
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{
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memset(addr, 0, sizeof(*addr));
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memcpy(addr->value, msg, INFINIBAND_ALEN);
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addr->media_id = TIPC_MEDIA_TYPE_IB;
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addr->broadcast = !memcmp(msg, b->bcast_addr.value,
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INFINIBAND_ALEN);
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return 0;
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}
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/* Convert discovery msg addr format to InfiniBand media addr format */
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static int tipc_ib_msg2addr(struct tipc_bearer *b,
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struct tipc_media_addr *addr,
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char *msg)
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{
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return tipc_ib_raw2addr(b, addr, msg);
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}
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/* InfiniBand media registration info */
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struct tipc_media ib_media_info = {
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.send_msg = tipc_l2_send_msg,
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.enable_media = tipc_enable_l2_media,
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.disable_media = tipc_disable_l2_media,
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.addr2str = tipc_ib_addr2str,
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.addr2msg = tipc_ib_addr2msg,
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.msg2addr = tipc_ib_msg2addr,
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.raw2addr = tipc_ib_raw2addr,
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.priority = TIPC_DEF_LINK_PRI,
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.tolerance = TIPC_DEF_LINK_TOL,
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.min_win = TIPC_DEF_LINK_WIN,
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.max_win = TIPC_MAX_IB_LINK_WIN,
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.type_id = TIPC_MEDIA_TYPE_IB,
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.hwaddr_len = INFINIBAND_ALEN,
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.name = "ib"
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};
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