xref: /linux/lib/crc/Kconfig (revision 89a51591405e09a862b9ca1ccfa880986c495c3c) 
1# SPDX-License-Identifier: GPL-2.0-only
2
3# Kconfig for the kernel's cyclic redundancy check (CRC) library code
4
5config CRC4
6	tristate
7	help
8	  The CRC4 library functions.  Select this if your module uses any of
9	  the functions from <linux/crc4.h>.
10
11config CRC7
12	tristate
13	help
14	  The CRC7 library functions.  Select this if your module uses any of
15	  the functions from <linux/crc7.h>.
16
17config CRC8
18	tristate
19	help
20	  The CRC8 library functions.  Select this if your module uses any of
21	  the functions from <linux/crc8.h>.
22
23config CRC16
24	tristate
25	help
26	  The CRC16 library functions.  Select this if your module uses any of
27	  the functions from <linux/crc16.h>.
28
29config CRC_CCITT
30	tristate
31	help
32	  The CRC-CCITT library functions.  Select this if your module uses any
33	  of the functions from <linux/crc-ccitt.h>.
34
35config CRC_ITU_T
36	tristate
37	help
38	  The CRC-ITU-T library functions.  Select this if your module uses
39	  any of the functions from <linux/crc-itu-t.h>.
40
41config CRC_T10DIF
42	tristate
43	help
44	  The CRC-T10DIF library functions.  Select this if your module uses
45	  any of the functions from <linux/crc-t10dif.h>.
46
47config ARCH_HAS_CRC_T10DIF
48	bool
49
50config CRC_T10DIF_ARCH
51	tristate
52	default CRC_T10DIF if ARCH_HAS_CRC_T10DIF && CRC_OPTIMIZATIONS
53
54config CRC32
55	tristate
56	select BITREVERSE
57	help
58	  The CRC32 library functions.  Select this if your module uses any of
59	  the functions from <linux/crc32.h> or <linux/crc32c.h>.
60
61config ARCH_HAS_CRC32
62	bool
63
64config CRC32_ARCH
65	tristate
66	default CRC32 if ARCH_HAS_CRC32 && CRC_OPTIMIZATIONS
67
68config CRC64
69	tristate
70	help
71	  The CRC64 library functions.  Select this if your module uses any of
72	  the functions from <linux/crc64.h>.
73
74config ARCH_HAS_CRC64
75	bool
76
77config CRC64_ARCH
78	tristate
79	default CRC64 if ARCH_HAS_CRC64 && CRC_OPTIMIZATIONS
80
81config CRC_OPTIMIZATIONS
82	bool "Enable optimized CRC implementations" if EXPERT
83	default y
84	help
85	  Disabling this option reduces code size slightly by disabling the
86	  architecture-optimized implementations of any CRC variants that are
87	  enabled.  CRC checksumming performance may get much slower.
88
89	  Keep this enabled unless you're really trying to minimize the size of
90	  the kernel.
91
92config CRC_KUNIT_TEST
93	tristate "KUnit tests for CRC functions" if !KUNIT_ALL_TESTS
94	depends on KUNIT
95	default KUNIT_ALL_TESTS
96	select CRC7
97	select CRC16
98	select CRC_T10DIF
99	select CRC32
100	select CRC64
101	help
102	  Unit tests for the CRC library functions.
103
104	  This is intended to help people writing architecture-specific
105	  optimized versions.  If unsure, say N.
106
107config CRC_BENCHMARK
108	bool "Benchmark for the CRC functions"
109	depends on CRC_KUNIT_TEST
110	help
111	  Include benchmarks in the KUnit test suite for the CRC functions.
112