[linux-2.6-block.git] / net / tipc / ib_media.c

/*
 * 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"
};
Commit	Line	Data
a29a194a PM	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
38504c28	45	/* convert InfiniBand address (media address format) media address to string */
e4d050cb YX	46	static int tipc_ib_addr2str(struct tipc_media_addr a, char str_buf,
e4d050cb YX	47	int str_size)
a29a194a PM	48	{
	49	if (str_size < 60) /* 60 = 19 * strlen("xx:") + strlen("xx\0") */
	50	return 1;
	51
d77e41e1	52	sprintf(str_buf, "%20phC", a->value);
a29a194a PM	53
	54	return 0;
	55	}
	56
38504c28 JPM	57	/* Convert from media address format to discovery message addr format */
38504c28 JPM	58	static int tipc_ib_addr2msg(char msg, struct tipc_media_addr addr)
a29a194a	59	{
91e2eb56	60	memset(msg, 0, TIPC_MEDIA_INFO_SIZE);
38504c28	61	memcpy(msg, addr->value, INFINIBAND_ALEN);
a29a194a PM	62	return 0;
	63	}
	64
38504c28 JPM	65	/* Convert raw InfiniBand address format to media addr format */
	66	static int tipc_ib_raw2addr(struct tipc_bearer *b,
	67	struct tipc_media_addr *addr,
	68	char *msg)
a29a194a	69	{
38504c28 JPM	70	memset(addr, 0, sizeof(*addr));
	71	memcpy(addr->value, msg, INFINIBAND_ALEN);
	72	addr->media_id = TIPC_MEDIA_TYPE_IB;
	73	addr->broadcast = !memcmp(msg, b->bcast_addr.value,
	74	INFINIBAND_ALEN);
a29a194a PM	75	return 0;
	76	}
	77
38504c28 JPM	78	/* Convert discovery msg addr format to InfiniBand media addr format */
	79	static int tipc_ib_msg2addr(struct tipc_bearer *b,
	80	struct tipc_media_addr *addr,
	81	char *msg)
	82	{
	83	return tipc_ib_raw2addr(b, addr, msg);
	84	}
	85
e4d050cb	86	/* InfiniBand media registration info */
5702dbab	87	struct tipc_media ib_media_info = {
e4d050cb YX	88	.send_msg = tipc_l2_send_msg,
	89	.enable_media = tipc_enable_l2_media,
	90	.disable_media = tipc_disable_l2_media,
	91	.addr2str = tipc_ib_addr2str,
	92	.addr2msg = tipc_ib_addr2msg,
	93	.msg2addr = tipc_ib_msg2addr,
38504c28	94	.raw2addr = tipc_ib_raw2addr,
a29a194a PM	95	.priority = TIPC_DEF_LINK_PRI,
	96	.tolerance = TIPC_DEF_LINK_TOL,
	97	.window = TIPC_DEF_LINK_WIN,
	98	.type_id = TIPC_MEDIA_TYPE_IB,
e4d050cb	99	.hwaddr_len = INFINIBAND_ALEN,
a29a194a PM	100	.name = "ib"
a29a194a PM	101	};