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/*
* Copyright (c) 2006 Cisco Systems, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - 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.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#if HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#include <stdlib.h>
#include "mthca.h"
#if !(defined(HAVE_IBV_DONTFORK_RANGE) && defined(HAVE_IBV_DOFORK_RANGE))
/*
* If libibverbs isn't exporting these functions, then there's no
* point in doing it here, because the rest of libibverbs isn't going
* to be fork-safe anyway.
*/
static int ibv_dontfork_range(void *base, size_t size)
{
return 0;
}
static int ibv_dofork_range(void *base, size_t size)
{
return 0;
}
#endif /* HAVE_IBV_DONTFORK_RANGE && HAVE_IBV_DOFORK_RANGE */
int mthca_alloc_buf(struct mthca_buf *buf, size_t size, int page_size)
{
int ret;
ret = posix_memalign(&buf->buf, page_size, align(size, page_size));
if (ret)
return ret;
ret = ibv_dontfork_range(buf->buf, size);
if (ret)
free(buf->buf);
if (!ret)
buf->length = size;
return ret;
}
void mthca_free_buf(struct mthca_buf *buf)
{
ibv_dofork_range(buf->buf, buf->length);
free(buf->buf);
}
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