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authorRandy Dunlap <rdunlap@xenotime.net>2006-06-25 08:48:59 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-25 13:01:20 -0400
commit2f72100c01dd31d769097c58874e8ab1e70b2518 (patch)
treee8f654f519f56ac37de88533e3d93a3e80cb6454 /lib
parent28e83baac20e3fe624af89a55eb06c2a7cab6828 (diff)
[PATCH] kernel-doc for lib/crc*.c
Make kernel-doc corrections & additions to lib/crc*.c. Add crc functions to kernel-api.tmpl in DocBook. Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'lib')
-rw-r--r--lib/crc-ccitt.c6
-rw-r--r--lib/crc16.c10
-rw-r--r--lib/crc32.c54
3 files changed, 30 insertions, 40 deletions
diff --git a/lib/crc-ccitt.c b/lib/crc-ccitt.c
index 115d149af407..7f6dd68d2d09 100644
--- a/lib/crc-ccitt.c
+++ b/lib/crc-ccitt.c
@@ -53,9 +53,9 @@ EXPORT_SYMBOL(crc_ccitt_table);
53 53
54/** 54/**
55 * crc_ccitt - recompute the CRC for the data buffer 55 * crc_ccitt - recompute the CRC for the data buffer
56 * @crc - previous CRC value 56 * @crc: previous CRC value
57 * @buffer - data pointer 57 * @buffer: data pointer
58 * @len - number of bytes in the buffer 58 * @len: number of bytes in the buffer
59 */ 59 */
60u16 crc_ccitt(u16 crc, u8 const *buffer, size_t len) 60u16 crc_ccitt(u16 crc, u8 const *buffer, size_t len)
61{ 61{
diff --git a/lib/crc16.c b/lib/crc16.c
index 011fe573c666..8737b084d1f9 100644
--- a/lib/crc16.c
+++ b/lib/crc16.c
@@ -47,12 +47,12 @@ u16 const crc16_table[256] = {
47EXPORT_SYMBOL(crc16_table); 47EXPORT_SYMBOL(crc16_table);
48 48
49/** 49/**
50 * Compute the CRC-16 for the data buffer 50 * crc16 - compute the CRC-16 for the data buffer
51 * @crc: previous CRC value
52 * @buffer: data pointer
53 * @len: number of bytes in the buffer
51 * 54 *
52 * @param crc previous CRC value 55 * Returns the updated CRC value.
53 * @param buffer data pointer
54 * @param len number of bytes in the buffer
55 * @return the updated CRC value
56 */ 56 */
57u16 crc16(u16 crc, u8 const *buffer, size_t len) 57u16 crc16(u16 crc, u8 const *buffer, size_t len)
58{ 58{
diff --git a/lib/crc32.c b/lib/crc32.c
index 065198f98b3f..285fd9bc61be 100644
--- a/lib/crc32.c
+++ b/lib/crc32.c
@@ -42,20 +42,21 @@ MODULE_AUTHOR("Matt Domsch <Matt_Domsch@dell.com>");
42MODULE_DESCRIPTION("Ethernet CRC32 calculations"); 42MODULE_DESCRIPTION("Ethernet CRC32 calculations");
43MODULE_LICENSE("GPL"); 43MODULE_LICENSE("GPL");
44 44
45/**
46 * crc32_le() - Calculate bitwise little-endian Ethernet AUTODIN II CRC32
47 * @crc: seed value for computation. ~0 for Ethernet, sometimes 0 for
48 * other uses, or the previous crc32 value if computing incrementally.
49 * @p: pointer to buffer over which CRC is run
50 * @len: length of buffer @p
51 */
52u32 __attribute_pure__ crc32_le(u32 crc, unsigned char const *p, size_t len);
53
45#if CRC_LE_BITS == 1 54#if CRC_LE_BITS == 1
46/* 55/*
47 * In fact, the table-based code will work in this case, but it can be 56 * In fact, the table-based code will work in this case, but it can be
48 * simplified by inlining the table in ?: form. 57 * simplified by inlining the table in ?: form.
49 */ 58 */
50 59
51/**
52 * crc32_le() - Calculate bitwise little-endian Ethernet AUTODIN II CRC32
53 * @crc - seed value for computation. ~0 for Ethernet, sometimes 0 for
54 * other uses, or the previous crc32 value if computing incrementally.
55 * @p - pointer to buffer over which CRC is run
56 * @len - length of buffer @p
57 *
58 */
59u32 __attribute_pure__ crc32_le(u32 crc, unsigned char const *p, size_t len) 60u32 __attribute_pure__ crc32_le(u32 crc, unsigned char const *p, size_t len)
60{ 61{
61 int i; 62 int i;
@@ -68,14 +69,6 @@ u32 __attribute_pure__ crc32_le(u32 crc, unsigned char const *p, size_t len)
68} 69}
69#else /* Table-based approach */ 70#else /* Table-based approach */
70 71
71/**
72 * crc32_le() - Calculate bitwise little-endian Ethernet AUTODIN II CRC32
73 * @crc - seed value for computation. ~0 for Ethernet, sometimes 0 for
74 * other uses, or the previous crc32 value if computing incrementally.
75 * @p - pointer to buffer over which CRC is run
76 * @len - length of buffer @p
77 *
78 */
79u32 __attribute_pure__ crc32_le(u32 crc, unsigned char const *p, size_t len) 72u32 __attribute_pure__ crc32_le(u32 crc, unsigned char const *p, size_t len)
80{ 73{
81# if CRC_LE_BITS == 8 74# if CRC_LE_BITS == 8
@@ -145,20 +138,21 @@ u32 __attribute_pure__ crc32_le(u32 crc, unsigned char const *p, size_t len)
145} 138}
146#endif 139#endif
147 140
141/**
142 * crc32_be() - Calculate bitwise big-endian Ethernet AUTODIN II CRC32
143 * @crc: seed value for computation. ~0 for Ethernet, sometimes 0 for
144 * other uses, or the previous crc32 value if computing incrementally.
145 * @p: pointer to buffer over which CRC is run
146 * @len: length of buffer @p
147 */
148u32 __attribute_pure__ crc32_be(u32 crc, unsigned char const *p, size_t len);
149
148#if CRC_BE_BITS == 1 150#if CRC_BE_BITS == 1
149/* 151/*
150 * In fact, the table-based code will work in this case, but it can be 152 * In fact, the table-based code will work in this case, but it can be
151 * simplified by inlining the table in ?: form. 153 * simplified by inlining the table in ?: form.
152 */ 154 */
153 155
154/**
155 * crc32_be() - Calculate bitwise big-endian Ethernet AUTODIN II CRC32
156 * @crc - seed value for computation. ~0 for Ethernet, sometimes 0 for
157 * other uses, or the previous crc32 value if computing incrementally.
158 * @p - pointer to buffer over which CRC is run
159 * @len - length of buffer @p
160 *
161 */
162u32 __attribute_pure__ crc32_be(u32 crc, unsigned char const *p, size_t len) 156u32 __attribute_pure__ crc32_be(u32 crc, unsigned char const *p, size_t len)
163{ 157{
164 int i; 158 int i;
@@ -173,14 +167,6 @@ u32 __attribute_pure__ crc32_be(u32 crc, unsigned char const *p, size_t len)
173} 167}
174 168
175#else /* Table-based approach */ 169#else /* Table-based approach */
176/**
177 * crc32_be() - Calculate bitwise big-endian Ethernet AUTODIN II CRC32
178 * @crc - seed value for computation. ~0 for Ethernet, sometimes 0 for
179 * other uses, or the previous crc32 value if computing incrementally.
180 * @p - pointer to buffer over which CRC is run
181 * @len - length of buffer @p
182 *
183 */
184u32 __attribute_pure__ crc32_be(u32 crc, unsigned char const *p, size_t len) 170u32 __attribute_pure__ crc32_be(u32 crc, unsigned char const *p, size_t len)
185{ 171{
186# if CRC_BE_BITS == 8 172# if CRC_BE_BITS == 8
@@ -249,6 +235,10 @@ u32 __attribute_pure__ crc32_be(u32 crc, unsigned char const *p, size_t len)
249} 235}
250#endif 236#endif
251 237
238/**
239 * bitreverse - reverse the order of bits in a u32 value
240 * @x: value to be bit-reversed
241 */
252u32 bitreverse(u32 x) 242u32 bitreverse(u32 x)
253{ 243{
254 x = (x >> 16) | (x << 16); 244 x = (x >> 16) | (x << 16);