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LinuxKPI: add dummy rhashtable implementation

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Add a skeleton implementation of rhashtable in order to keep an
upcoming wireless driver compiling.  We'll implement it as soon as
we get there.

MFC after:	10 days
Reviewed by:	emaste (previous version before his suggested changes)
Differential Revision: https://reviews.freebsd.org/D40176
This commit is contained in:
Bjoern A. Zeeb 2023-05-20 00:45:47 +00:00
parent 4cbd427788
commit a30a0d940d
1 changed files with 89 additions and 0 deletions
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89
sys/compat/linuxkpi/common/include/linux/rhashtable.h Normal file
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/*-
* Copyright (c) 2023 Bjoern A. Zeeb
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* $FreeBSD$
*/
#ifndef _LINUXKPI_LINUX_RHASHTABLE_H
#define _LINUXKPI_LINUX_RHASHTABLE_H
#include <linux/kernel.h> /* pr_debug */
struct rhash_head {
};
struct rhashtable_params {
uint16_t head_offset;
uint16_t key_len;
uint16_t key_offset;
uint16_t nelem_hint;
bool automatic_shrinking;
};
struct rhashtable {
};
static inline int
rhashtable_init(struct rhashtable *rht,
const struct rhashtable_params *params)
{
pr_debug("%s: TODO\n", __func__);
return (-1);
}
static inline void
rhashtable_destroy(struct rhashtable *rht)
{
pr_debug("%s: TODO\n", __func__);
}
static inline void *
rhashtable_lookup_fast(struct rhashtable *rht, const void *key,
const struct rhashtable_params params)
{
pr_debug("%s: TODO\n", __func__);
return (NULL);
}
static inline void *
rhashtable_lookup_get_insert_fast(struct rhashtable *rht,
struct rhash_head *obj, const struct rhashtable_params params)
{
pr_debug("%s: TODO\n", __func__);
return (NULL);
}
static inline int
rhashtable_remove_fast(struct rhashtable *rht,
struct rhash_head *obj, const struct rhashtable_params params)
{
pr_debug("%s: TODO\n", __func__);
return (-ENOENT);
}
#endif /* _LINUXKPI_LINUX_RHASHTABLE_H */