xref: /freebsd/sys/compat/linuxkpi/common/include/linux/rhashtable.h (revision 9f44a47fd07924afc035991af15d84e6585dea4f)
1 /*-
2  * Copyright (c) 2023 Bjoern A. Zeeb
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  * 1. Redistributions of source code must retain the above copyright
8  *    notice, this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright
10  *    notice, this list of conditions and the following disclaimer in the
11  *    documentation and/or other materials provided with the distribution.
12  *
13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23  * SUCH DAMAGE.
24  *
25  * $FreeBSD$
26  */
27 
28 #ifndef	_LINUXKPI_LINUX_RHASHTABLE_H
29 #define	_LINUXKPI_LINUX_RHASHTABLE_H
30 
31 #include <linux/kernel.h>	/* pr_debug */
32 
33 struct rhash_head {
34 };
35 
36 struct rhashtable_params {
37 	uint16_t	head_offset;
38 	uint16_t	key_len;
39 	uint16_t	key_offset;
40 	uint16_t	nelem_hint;
41 	bool		automatic_shrinking;
42 };
43 
44 struct rhashtable {
45 };
46 
47 static inline int
48 rhashtable_init(struct rhashtable *rht,
49     const struct rhashtable_params *params)
50 {
51 
52 	pr_debug("%s: TODO\n", __func__);
53 	return (-1);
54 }
55 
56 static inline void
57 rhashtable_destroy(struct rhashtable *rht)
58 {
59 	pr_debug("%s: TODO\n", __func__);
60 }
61 
62 static inline void *
63 rhashtable_lookup_fast(struct rhashtable *rht, const void *key,
64     const struct rhashtable_params params)
65 {
66 
67 	pr_debug("%s: TODO\n", __func__);
68 	return (NULL);
69 }
70 
71 static inline void *
72 rhashtable_lookup_get_insert_fast(struct rhashtable *rht,
73     struct rhash_head *obj, const struct rhashtable_params params)
74 {
75 
76 	pr_debug("%s: TODO\n", __func__);
77 	return (NULL);
78 }
79 
80 static inline int
81 rhashtable_remove_fast(struct rhashtable *rht,
82     struct rhash_head *obj, const struct rhashtable_params params)
83 {
84 
85 	pr_debug("%s: TODO\n", __func__);
86 	return (-ENOENT);
87 }
88 
89 #endif	/* _LINUXKPI_LINUX_RHASHTABLE_H */
90