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authorHerbert Xu <herbert@gondor.apana.org.au>2013-07-24 03:04:16 -0400
committerHerbert Xu <herbert@gondor.apana.org.au>2013-07-24 03:04:16 -0400
commite70308ec0e4bff344fcfdf160de40e1150552c5f (patch)
tree17f12cc09fd55065c7dc2a1fd43215d728442598
parent9c23b7d3d6bda41e2a27375df705485523a96dc8 (diff)
Revert "crypto: crct10dif - Wrap crc_t10dif function all to use crypto transform framework"
This reverts commits 67822649d7305caf3dd50ed46c27b99c94eff996 39761214eefc6b070f29402aa1165f24d789b3f7 0b95a7f85718adcbba36407ef88bba0a7379ed03 31d939625a9a20b1badd2d4e6bf6fd39fa523405 2d31e518a42828df7877bca23a958627d60408bc Unfortunately this change broke boot on some systems that used an initrd which does not include the newly created crct10dif modules. As these modules are required by sd_mod under certain configurations this is a serious problem. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat
-rw-r--r--arch/x86/crypto/Makefile2
-rw-r--r--arch/x86/crypto/crct10dif-pcl-asm_64.S643
-rw-r--r--arch/x86/crypto/crct10dif-pclmul_glue.c151
-rw-r--r--crypto/Kconfig19
-rw-r--r--crypto/Makefile1
-rw-r--r--crypto/crct10dif.c178
-rw-r--r--crypto/tcrypt.c8
-rw-r--r--crypto/testmgr.c10
-rw-r--r--crypto/testmgr.h33
-rw-r--r--include/linux/crc-t10dif.h4
-rw-r--r--lib/Kconfig2
-rw-r--r--lib/crc-t10dif.c73
12 files changed, 43 insertions, 1081 deletions
diff --git a/arch/x86/crypto/Makefile b/arch/x86/crypto/Makefile
index 7d6ba9db1be9..6c63c358a7e6 100644
--- a/arch/x86/crypto/Makefile
+++ b/arch/x86/crypto/Makefile
@@ -27,7 +27,6 @@ obj-$(CONFIG_CRYPTO_SHA1_SSSE3) += sha1-ssse3.o
27obj-$(CONFIG_CRYPTO_CRC32_PCLMUL) += crc32-pclmul.o 27obj-$(CONFIG_CRYPTO_CRC32_PCLMUL) += crc32-pclmul.o
28obj-$(CONFIG_CRYPTO_SHA256_SSSE3) += sha256-ssse3.o 28obj-$(CONFIG_CRYPTO_SHA256_SSSE3) += sha256-ssse3.o
29obj-$(CONFIG_CRYPTO_SHA512_SSSE3) += sha512-ssse3.o 29obj-$(CONFIG_CRYPTO_SHA512_SSSE3) += sha512-ssse3.o
30obj-$(CONFIG_CRYPTO_CRCT10DIF_PCLMUL) += crct10dif-pclmul.o
31 30
32# These modules require assembler to support AVX. 31# These modules require assembler to support AVX.
33ifeq ($(avx_supported),yes) 32ifeq ($(avx_supported),yes)
@@ -82,4 +81,3 @@ crc32c-intel-$(CONFIG_64BIT) += crc32c-pcl-intel-asm_64.o
82crc32-pclmul-y := crc32-pclmul_asm.o crc32-pclmul_glue.o 81crc32-pclmul-y := crc32-pclmul_asm.o crc32-pclmul_glue.o
83sha256-ssse3-y := sha256-ssse3-asm.o sha256-avx-asm.o sha256-avx2-asm.o sha256_ssse3_glue.o 82sha256-ssse3-y := sha256-ssse3-asm.o sha256-avx-asm.o sha256-avx2-asm.o sha256_ssse3_glue.o
84sha512-ssse3-y := sha512-ssse3-asm.o sha512-avx-asm.o sha512-avx2-asm.o sha512_ssse3_glue.o 83sha512-ssse3-y := sha512-ssse3-asm.o sha512-avx-asm.o sha512-avx2-asm.o sha512_ssse3_glue.o
85crct10dif-pclmul-y := crct10dif-pcl-asm_64.o crct10dif-pclmul_glue.o
diff --git a/arch/x86/crypto/crct10dif-pcl-asm_64.S b/arch/x86/crypto/crct10dif-pcl-asm_64.S
deleted file mode 100644
index 35e97569d05f..000000000000
--- a/arch/x86/crypto/crct10dif-pcl-asm_64.S
+++ /dev/null
@@ -1,643 +0,0 @@
1########################################################################
2# Implement fast CRC-T10DIF computation with SSE and PCLMULQDQ instructions
3#
4# Copyright (c) 2013, Intel Corporation
5#
6# Authors:
7# Erdinc Ozturk <erdinc.ozturk@intel.com>
8# Vinodh Gopal <vinodh.gopal@intel.com>
9# James Guilford <james.guilford@intel.com>
10# Tim Chen <tim.c.chen@linux.intel.com>
11#
12# This software is available to you under a choice of one of two
13# licenses. You may choose to be licensed under the terms of the GNU
14# General Public License (GPL) Version 2, available from the file
15# COPYING in the main directory of this source tree, or the
16# OpenIB.org BSD license below:
17#
18# Redistribution and use in source and binary forms, with or without
19# modification, are permitted provided that the following conditions are
20# met:
21#
22# * Redistributions of source code must retain the above copyright
23# notice, this list of conditions and the following disclaimer.
24#
25# * Redistributions in binary form must reproduce the above copyright
26# notice, this list of conditions and the following disclaimer in the
27# documentation and/or other materials provided with the
28# distribution.
29#
30# * Neither the name of the Intel Corporation nor the names of its
31# contributors may be used to endorse or promote products derived from
32# this software without specific prior written permission.
33#
34#
35# THIS SOFTWARE IS PROVIDED BY INTEL CORPORATION ""AS IS"" AND ANY
36# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
37# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
38# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL CORPORATION OR
39# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
40# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
41# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
42# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
43# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
44# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
45# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
46########################################################################
47# Function API:
48# UINT16 crc_t10dif_pcl(
49# UINT16 init_crc, //initial CRC value, 16 bits
50# const unsigned char *buf, //buffer pointer to calculate CRC on
51# UINT64 len //buffer length in bytes (64-bit data)
52# );
53#
54# Reference paper titled "Fast CRC Computation for Generic
55# Polynomials Using PCLMULQDQ Instruction"
56# URL: http://www.intel.com/content/dam/www/public/us/en/documents
57# /white-papers/fast-crc-computation-generic-polynomials-pclmulqdq-paper.pdf
58#
59#
60
61#include <linux/linkage.h>
62
63.text
64
65#define arg1 %rdi
66#define arg2 %rsi
67#define arg3 %rdx
68
69#define arg1_low32 %edi
70
71ENTRY(crc_t10dif_pcl)
72.align 16
73
74 # adjust the 16-bit initial_crc value, scale it to 32 bits
75 shl $16, arg1_low32
76
77 # Allocate Stack Space
78 mov %rsp, %rcx
79 sub $16*2, %rsp
80 # align stack to 16 byte boundary
81 and $~(0x10 - 1), %rsp
82
83 # check if smaller than 256
84 cmp $256, arg3
85
86 # for sizes less than 128, we can't fold 64B at a time...
87 jl _less_than_128
88
89
90 # load the initial crc value
91 movd arg1_low32, %xmm10 # initial crc
92
93 # crc value does not need to be byte-reflected, but it needs
94 # to be moved to the high part of the register.
95 # because data will be byte-reflected and will align with
96 # initial crc at correct place.
97 pslldq $12, %xmm10
98
99 movdqa SHUF_MASK(%rip), %xmm11
100 # receive the initial 64B data, xor the initial crc value
101 movdqu 16*0(arg2), %xmm0
102 movdqu 16*1(arg2), %xmm1
103 movdqu 16*2(arg2), %xmm2
104 movdqu 16*3(arg2), %xmm3
105 movdqu 16*4(arg2), %xmm4
106 movdqu 16*5(arg2), %xmm5
107 movdqu 16*6(arg2), %xmm6
108 movdqu 16*7(arg2), %xmm7
109
110 pshufb %xmm11, %xmm0
111 # XOR the initial_crc value
112 pxor %xmm10, %xmm0
113 pshufb %xmm11, %xmm1
114 pshufb %xmm11, %xmm2
115 pshufb %xmm11, %xmm3
116 pshufb %xmm11, %xmm4
117 pshufb %xmm11, %xmm5
118 pshufb %xmm11, %xmm6
119 pshufb %xmm11, %xmm7
120
121 movdqa rk3(%rip), %xmm10 #xmm10 has rk3 and rk4
122 #imm value of pclmulqdq instruction
123 #will determine which constant to use
124
125 #################################################################
126 # we subtract 256 instead of 128 to save one instruction from the loop
127 sub $256, arg3
128
129 # at this section of the code, there is 64*x+y (0<=y<64) bytes of
130 # buffer. The _fold_64_B_loop will fold 64B at a time
131 # until we have 64+y Bytes of buffer
132
133
134 # fold 64B at a time. This section of the code folds 4 xmm
135 # registers in parallel
136_fold_64_B_loop:
137
138 # update the buffer pointer
139 add $128, arg2 # buf += 64#
140
141 movdqu 16*0(arg2), %xmm9
142 movdqu 16*1(arg2), %xmm12
143 pshufb %xmm11, %xmm9
144 pshufb %xmm11, %xmm12
145 movdqa %xmm0, %xmm8
146 movdqa %xmm1, %xmm13
147 pclmulqdq $0x0 , %xmm10, %xmm0
148 pclmulqdq $0x11, %xmm10, %xmm8
149 pclmulqdq $0x0 , %xmm10, %xmm1
150 pclmulqdq $0x11, %xmm10, %xmm13
151 pxor %xmm9 , %xmm0
152 xorps %xmm8 , %xmm0
153 pxor %xmm12, %xmm1
154 xorps %xmm13, %xmm1
155
156 movdqu 16*2(arg2), %xmm9
157 movdqu 16*3(arg2), %xmm12
158 pshufb %xmm11, %xmm9
159 pshufb %xmm11, %xmm12
160 movdqa %xmm2, %xmm8
161 movdqa %xmm3, %xmm13
162 pclmulqdq $0x0, %xmm10, %xmm2
163 pclmulqdq $0x11, %xmm10, %xmm8
164 pclmulqdq $0x0, %xmm10, %xmm3
165 pclmulqdq $0x11, %xmm10, %xmm13
166 pxor %xmm9 , %xmm2
167 xorps %xmm8 , %xmm2
168 pxor %xmm12, %xmm3
169 xorps %xmm13, %xmm3
170
171 movdqu 16*4(arg2), %xmm9
172 movdqu 16*5(arg2), %xmm12
173 pshufb %xmm11, %xmm9
174 pshufb %xmm11, %xmm12
175 movdqa %xmm4, %xmm8
176 movdqa %xmm5, %xmm13
177 pclmulqdq $0x0, %xmm10, %xmm4
178 pclmulqdq $0x11, %xmm10, %xmm8
179 pclmulqdq $0x0, %xmm10, %xmm5
180 pclmulqdq $0x11, %xmm10, %xmm13
181 pxor %xmm9 , %xmm4
182 xorps %xmm8 , %xmm4
183 pxor %xmm12, %xmm5
184 xorps %xmm13, %xmm5
185
186 movdqu 16*6(arg2), %xmm9
187 movdqu 16*7(arg2), %xmm12
188 pshufb %xmm11, %xmm9
189 pshufb %xmm11, %xmm12
190 movdqa %xmm6 , %xmm8
191 movdqa %xmm7 , %xmm13
192 pclmulqdq $0x0 , %xmm10, %xmm6
193 pclmulqdq $0x11, %xmm10, %xmm8
194 pclmulqdq $0x0 , %xmm10, %xmm7
195 pclmulqdq $0x11, %xmm10, %xmm13
196 pxor %xmm9 , %xmm6
197 xorps %xmm8 , %xmm6
198 pxor %xmm12, %xmm7
199 xorps %xmm13, %xmm7
200
201 sub $128, arg3
202
203 # check if there is another 64B in the buffer to be able to fold
204 jge _fold_64_B_loop
205 ##################################################################
206
207
208 add $128, arg2
209 # at this point, the buffer pointer is pointing at the last y Bytes
210 # of the buffer the 64B of folded data is in 4 of the xmm
211 # registers: xmm0, xmm1, xmm2, xmm3
212
213
214 # fold the 8 xmm registers to 1 xmm register with different constants
215
216 movdqa rk9(%rip), %xmm10
217 movdqa %xmm0, %xmm8
218 pclmulqdq $0x11, %xmm10, %xmm0
219 pclmulqdq $0x0 , %xmm10, %xmm8
220 pxor %xmm8, %xmm7
221 xorps %xmm0, %xmm7
222
223 movdqa rk11(%rip), %xmm10
224 movdqa %xmm1, %xmm8
225 pclmulqdq $0x11, %xmm10, %xmm1
226 pclmulqdq $0x0 , %xmm10, %xmm8
227 pxor %xmm8, %xmm7
228 xorps %xmm1, %xmm7
229
230 movdqa rk13(%rip), %xmm10
231 movdqa %xmm2, %xmm8
232 pclmulqdq $0x11, %xmm10, %xmm2
233 pclmulqdq $0x0 , %xmm10, %xmm8
234 pxor %xmm8, %xmm7
235 pxor %xmm2, %xmm7
236
237 movdqa rk15(%rip), %xmm10
238 movdqa %xmm3, %xmm8
239 pclmulqdq $0x11, %xmm10, %xmm3
240 pclmulqdq $0x0 , %xmm10, %xmm8
241 pxor %xmm8, %xmm7
242 xorps %xmm3, %xmm7
243
244 movdqa rk17(%rip), %xmm10
245 movdqa %xmm4, %xmm8
246 pclmulqdq $0x11, %xmm10, %xmm4
247 pclmulqdq $0x0 , %xmm10, %xmm8
248 pxor %xmm8, %xmm7
249 pxor %xmm4, %xmm7
250
251 movdqa rk19(%rip), %xmm10
252 movdqa %xmm5, %xmm8
253 pclmulqdq $0x11, %xmm10, %xmm5
254 pclmulqdq $0x0 , %xmm10, %xmm8
255 pxor %xmm8, %xmm7
256 xorps %xmm5, %xmm7
257
258 movdqa rk1(%rip), %xmm10 #xmm10 has rk1 and rk2
259 #imm value of pclmulqdq instruction
260 #will determine which constant to use
261 movdqa %xmm6, %xmm8
262 pclmulqdq $0x11, %xmm10, %xmm6
263 pclmulqdq $0x0 , %xmm10, %xmm8
264 pxor %xmm8, %xmm7
265 pxor %xmm6, %xmm7
266
267
268 # instead of 64, we add 48 to the loop counter to save 1 instruction
269 # from the loop instead of a cmp instruction, we use the negative
270 # flag with the jl instruction
271 add $128-16, arg3
272 jl _final_reduction_for_128
273
274 # now we have 16+y bytes left to reduce. 16 Bytes is in register xmm7
275 # and the rest is in memory. We can fold 16 bytes at a time if y>=16
276 # continue folding 16B at a time
277
278_16B_reduction_loop:
279 movdqa %xmm7, %xmm8
280 pclmulqdq $0x11, %xmm10, %xmm7
281 pclmulqdq $0x0 , %xmm10, %xmm8
282 pxor %xmm8, %xmm7
283 movdqu (arg2), %xmm0
284 pshufb %xmm11, %xmm0
285 pxor %xmm0 , %xmm7
286 add $16, arg2
287 sub $16, arg3
288 # instead of a cmp instruction, we utilize the flags with the
289 # jge instruction equivalent of: cmp arg3, 16-16
290 # check if there is any more 16B in the buffer to be able to fold
291 jge _16B_reduction_loop
292
293 #now we have 16+z bytes left to reduce, where 0<= z < 16.
294 #first, we reduce the data in the xmm7 register
295
296
297_final_reduction_for_128:
298 # check if any more data to fold. If not, compute the CRC of
299 # the final 128 bits
300 add $16, arg3
301 je _128_done
302
303 # here we are getting data that is less than 16 bytes.
304 # since we know that there was data before the pointer, we can
305 # offset the input pointer before the actual point, to receive
306 # exactly 16 bytes. after that the registers need to be adjusted.
307_get_last_two_xmms:
308 movdqa %xmm7, %xmm2
309
310 movdqu -16(arg2, arg3), %xmm1
311 pshufb %xmm11, %xmm1
312
313 # get rid of the extra data that was loaded before
314 # load the shift constant
315 lea pshufb_shf_table+16(%rip), %rax
316 sub arg3, %rax
317 movdqu (%rax), %xmm0
318
319 # shift xmm2 to the left by arg3 bytes
320 pshufb %xmm0, %xmm2
321
322 # shift xmm7 to the right by 16-arg3 bytes
323 pxor mask1(%rip), %xmm0
324 pshufb %xmm0, %xmm7
325 pblendvb %xmm2, %xmm1 #xmm0 is implicit
326
327 # fold 16 Bytes
328 movdqa %xmm1, %xmm2
329 movdqa %xmm7, %xmm8
330 pclmulqdq $0x11, %xmm10, %xmm7
331 pclmulqdq $0x0 , %xmm10, %xmm8
332 pxor %xmm8, %xmm7
333 pxor %xmm2, %xmm7
334
335_128_done:
336 # compute crc of a 128-bit value
337 movdqa rk5(%rip), %xmm10 # rk5 and rk6 in xmm10
338 movdqa %xmm7, %xmm0
339
340 #64b fold
341 pclmulqdq $0x1, %xmm10, %xmm7
342 pslldq $8 , %xmm0
343 pxor %xmm0, %xmm7
344
345 #32b fold
346 movdqa %xmm7, %xmm0
347
348 pand mask2(%rip), %xmm0
349
350 psrldq $12, %xmm7
351 pclmulqdq $0x10, %xmm10, %xmm7
352 pxor %xmm0, %xmm7
353
354 #barrett reduction
355_barrett:
356 movdqa rk7(%rip), %xmm10 # rk7 and rk8 in xmm10
357 movdqa %xmm7, %xmm0
358 pclmulqdq $0x01, %xmm10, %xmm7
359 pslldq $4, %xmm7
360 pclmulqdq $0x11, %xmm10, %xmm7
361
362 pslldq $4, %xmm7
363 pxor %xmm0, %xmm7
364 pextrd $1, %xmm7, %eax
365
366_cleanup:
367 # scale the result back to 16 bits
368 shr $16, %eax
369 mov %rcx, %rsp
370 ret
371
372########################################################################
373
374.align 16
375_less_than_128:
376
377 # check if there is enough buffer to be able to fold 16B at a time
378 cmp $32, arg3
379 jl _less_than_32
380 movdqa SHUF_MASK(%rip), %xmm11
381
382 # now if there is, load the constants
383 movdqa rk1(%rip), %xmm10 # rk1 and rk2 in xmm10
384
385 movd arg1_low32, %xmm0 # get the initial crc value
386 pslldq $12, %xmm0 # align it to its correct place
387 movdqu (arg2), %xmm7 # load the plaintext
388 pshufb %xmm11, %xmm7 # byte-reflect the plaintext
389 pxor %xmm0, %xmm7
390
391
392 # update the buffer pointer
393 add $16, arg2
394
395 # update the counter. subtract 32 instead of 16 to save one
396 # instruction from the loop
397 sub $32, arg3
398
399 jmp _16B_reduction_loop
400
401
402.align 16
403_less_than_32:
404 # mov initial crc to the return value. this is necessary for
405 # zero-length buffers.
406 mov arg1_low32, %eax
407 test arg3, arg3
408 je _cleanup
409
410 movdqa SHUF_MASK(%rip), %xmm11
411
412 movd arg1_low32, %xmm0 # get the initial crc value
413 pslldq $12, %xmm0 # align it to its correct place
414
415 cmp $16, arg3
416 je _exact_16_left
417 jl _less_than_16_left
418
419 movdqu (arg2), %xmm7 # load the plaintext
420 pshufb %xmm11, %xmm7 # byte-reflect the plaintext
421 pxor %xmm0 , %xmm7 # xor the initial crc value
422 add $16, arg2
423 sub $16, arg3
424 movdqa rk1(%rip), %xmm10 # rk1 and rk2 in xmm10
425 jmp _get_last_two_xmms
426
427
428.align 16
429_less_than_16_left:
430 # use stack space to load data less than 16 bytes, zero-out
431 # the 16B in memory first.
432
433 pxor %xmm1, %xmm1
434 mov %rsp, %r11
435 movdqa %xmm1, (%r11)
436
437 cmp $4, arg3
438 jl _only_less_than_4
439
440 # backup the counter value
441 mov arg3, %r9
442 cmp $8, arg3
443 jl _less_than_8_left
444
445 # load 8 Bytes
446 mov (arg2), %rax
447 mov %rax, (%r11)
448 add $8, %r11
449 sub $8, arg3
450 add $8, arg2
451_less_than_8_left:
452
453 cmp $4, arg3
454 jl _less_than_4_left
455
456 # load 4 Bytes
457 mov (arg2), %eax
458 mov %eax, (%r11)
459 add $4, %r11
460 sub $4, arg3
461 add $4, arg2
462_less_than_4_left:
463
464 cmp $2, arg3
465 jl _less_than_2_left
466
467 # load 2 Bytes
468 mov (arg2), %ax
469 mov %ax, (%r11)
470 add $2, %r11
471 sub $2, arg3
472 add $2, arg2
473_less_than_2_left:
474 cmp $1, arg3
475 jl _zero_left
476
477 # load 1 Byte
478 mov (arg2), %al
479 mov %al, (%r11)
480_zero_left:
481 movdqa (%rsp), %xmm7
482 pshufb %xmm11, %xmm7
483 pxor %xmm0 , %xmm7 # xor the initial crc value
484
485 # shl r9, 4
486 lea pshufb_shf_table+16(%rip), %rax
487 sub %r9, %rax
488 movdqu (%rax), %xmm0
489 pxor mask1(%rip), %xmm0
490
491 pshufb %xmm0, %xmm7
492 jmp _128_done
493
494.align 16
495_exact_16_left:
496 movdqu (arg2), %xmm7
497 pshufb %xmm11, %xmm7
498 pxor %xmm0 , %xmm7 # xor the initial crc value
499
500 jmp _128_done
501
502_only_less_than_4:
503 cmp $3, arg3
504 jl _only_less_than_3
505
506 # load 3 Bytes
507 mov (arg2), %al
508 mov %al, (%r11)
509
510 mov 1(arg2), %al
511 mov %al, 1(%r11)
512
513 mov 2(arg2), %al
514 mov %al, 2(%r11)
515
516 movdqa (%rsp), %xmm7
517 pshufb %xmm11, %xmm7
518 pxor %xmm0 , %xmm7 # xor the initial crc value
519
520 psrldq $5, %xmm7
521
522 jmp _barrett
523_only_less_than_3:
524 cmp $2, arg3
525 jl _only_less_than_2
526
527 # load 2 Bytes
528 mov (arg2), %al
529 mov %al, (%r11)
530
531 mov 1(arg2), %al
532 mov %al, 1(%r11)
533
534 movdqa (%rsp), %xmm7
535 pshufb %xmm11, %xmm7
536 pxor %xmm0 , %xmm7 # xor the initial crc value
537
538 psrldq $6, %xmm7
539
540 jmp _barrett
541_only_less_than_2:
542
543 # load 1 Byte
544 mov (arg2), %al
545 mov %al, (%r11)
546
547 movdqa (%rsp), %xmm7
548 pshufb %xmm11, %xmm7
549 pxor %xmm0 , %xmm7 # xor the initial crc value
550
551 psrldq $7, %xmm7
552
553 jmp _barrett
554
555ENDPROC(crc_t10dif_pcl)
556
557.data
558
559# precomputed constants
560# these constants are precomputed from the poly:
561# 0x8bb70000 (0x8bb7 scaled to 32 bits)
562.align 16
563# Q = 0x18BB70000
564# rk1 = 2^(32*3) mod Q << 32
565# rk2 = 2^(32*5) mod Q << 32
566# rk3 = 2^(32*15) mod Q << 32
567# rk4 = 2^(32*17) mod Q << 32
568# rk5 = 2^(32*3) mod Q << 32
569# rk6 = 2^(32*2) mod Q << 32
570# rk7 = floor(2^64/Q)
571# rk8 = Q
572rk1:
573.quad 0x2d56000000000000
574rk2:
575.quad 0x06df000000000000
576rk3:
577.quad 0x9d9d000000000000
578rk4:
579.quad 0x7cf5000000000000
580rk5:
581.quad 0x2d56000000000000
582rk6:
583.quad 0x1368000000000000
584rk7:
585.quad 0x00000001f65a57f8
586rk8:
587.quad 0x000000018bb70000
588
589rk9:
590.quad 0xceae000000000000
591rk10:
592.quad 0xbfd6000000000000
593rk11:
594.quad 0x1e16000000000000
595rk12:
596.quad 0x713c000000000000
597rk13:
598.quad 0xf7f9000000000000
599rk14:
600.quad 0x80a6000000000000
601rk15:
602.quad 0x044c000000000000
603rk16:
604.quad 0xe658000000000000
605rk17:
606.quad 0xad18000000000000
607rk18:
608.quad 0xa497000000000000
609rk19:
610.quad 0x6ee3000000000000
611rk20:
612.quad 0xe7b5000000000000
613
614
615
616mask1:
617.octa 0x80808080808080808080808080808080
618mask2:
619.octa 0x00000000FFFFFFFFFFFFFFFFFFFFFFFF
620
621SHUF_MASK:
622.octa 0x000102030405060708090A0B0C0D0E0F
623
624pshufb_shf_table:
625# use these values for shift constants for the pshufb instruction
626# different alignments result in values as shown:
627# DDQ 0x008f8e8d8c8b8a898887868584838281 # shl 15 (16-1) / shr1
628# DDQ 0x01008f8e8d8c8b8a8988878685848382 # shl 14 (16-3) / shr2
629# DDQ 0x0201008f8e8d8c8b8a89888786858483 # shl 13 (16-4) / shr3
630# DDQ 0x030201008f8e8d8c8b8a898887868584 # shl 12 (16-4) / shr4
631# DDQ 0x04030201008f8e8d8c8b8a8988878685 # shl 11 (16-5) / shr5
632# DDQ 0x0504030201008f8e8d8c8b8a89888786 # shl 10 (16-6) / shr6
633# DDQ 0x060504030201008f8e8d8c8b8a898887 # shl 9 (16-7) / shr7
634# DDQ 0x07060504030201008f8e8d8c8b8a8988 # shl 8 (16-8) / shr8
635# DDQ 0x0807060504030201008f8e8d8c8b8a89 # shl 7 (16-9) / shr9
636# DDQ 0x090807060504030201008f8e8d8c8b8a # shl 6 (16-10) / shr10
637# DDQ 0x0a090807060504030201008f8e8d8c8b # shl 5 (16-11) / shr11
638# DDQ 0x0b0a090807060504030201008f8e8d8c # shl 4 (16-12) / shr12
639# DDQ 0x0c0b0a090807060504030201008f8e8d # shl 3 (16-13) / shr13
640# DDQ 0x0d0c0b0a090807060504030201008f8e # shl 2 (16-14) / shr14
641# DDQ 0x0e0d0c0b0a090807060504030201008f # shl 1 (16-15) / shr15
642.octa 0x8f8e8d8c8b8a89888786858483828100
643.octa 0x000e0d0c0b0a09080706050403020100
diff --git a/arch/x86/crypto/crct10dif-pclmul_glue.c b/arch/x86/crypto/crct10dif-pclmul_glue.c
deleted file mode 100644
index 7845d7fd54c0..000000000000
--- a/arch/x86/crypto/crct10dif-pclmul_glue.c
+++ /dev/null
@@ -1,151 +0,0 @@
1/*
2 * Cryptographic API.
3 *
4 * T10 Data Integrity Field CRC16 Crypto Transform using PCLMULQDQ Instructions
5 *
6 * Copyright (C) 2013 Intel Corporation
7 * Author: Tim Chen <tim.c.chen@linux.intel.com>
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the Free
11 * Software Foundation; either version 2 of the License, or (at your option)
12 * any later version.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
15 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
17 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
18 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
19 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
20 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 *
23 */
24
25#include <linux/types.h>
26#include <linux/module.h>
27#include <linux/crc-t10dif.h>
28#include <crypto/internal/hash.h>
29#include <linux/init.h>
30#include <linux/string.h>
31#include <linux/kernel.h>
32#include <asm/i387.h>
33#include <asm/cpufeature.h>
34#include <asm/cpu_device_id.h>
35
36asmlinkage __u16 crc_t10dif_pcl(__u16 crc, const unsigned char *buf,
37 size_t len);
38
39struct chksum_desc_ctx {
40 __u16 crc;
41};
42
43/*
44 * Steps through buffer one byte at at time, calculates reflected
45 * crc using table.
46 */
47
48static int chksum_init(struct shash_desc *desc)
49{
50 struct chksum_desc_ctx *ctx = shash_desc_ctx(desc);
51
52 ctx->crc = 0;
53
54 return 0;
55}
56
57static int chksum_update(struct shash_desc *desc, const u8 *data,
58 unsigned int length)
59{
60 struct chksum_desc_ctx *ctx = shash_desc_ctx(desc);
61
62 if (irq_fpu_usable()) {
63 kernel_fpu_begin();
64 ctx->crc = crc_t10dif_pcl(ctx->crc, data, length);
65 kernel_fpu_end();
66 } else
67 ctx->crc = crc_t10dif_generic(ctx->crc, data, length);
68 return 0;
69}
70
71static int chksum_final(struct shash_desc *desc, u8 *out)
72{
73 struct chksum_desc_ctx *ctx = shash_desc_ctx(desc);
74
75 *(__u16 *)out = ctx->crc;
76 return 0;
77}
78
79static int __chksum_finup(__u16 *crcp, const u8 *data, unsigned int len,
80 u8 *out)
81{
82 if (irq_fpu_usable()) {
83 kernel_fpu_begin();
84 *(__u16 *)out = crc_t10dif_pcl(*crcp, data, len);
85 kernel_fpu_end();
86 } else
87 *(__u16 *)out = crc_t10dif_generic(*crcp, data, len);
88 return 0;
89}
90
91static int chksum_finup(struct shash_desc *desc, const u8 *data,
92 unsigned int len, u8 *out)
93{
94 struct chksum_desc_ctx *ctx = shash_desc_ctx(desc);
95
96 return __chksum_finup(&ctx->crc, data, len, out);
97}
98
99static int chksum_digest(struct shash_desc *desc, const u8 *data,
100 unsigned int length, u8 *out)
101{
102 struct chksum_desc_ctx *ctx = shash_desc_ctx(desc);
103
104 return __chksum_finup(&ctx->crc, data, length, out);
105}
106
107static struct shash_alg alg = {
108 .digestsize = CRC_T10DIF_DIGEST_SIZE,
109 .init = chksum_init,
110 .update = chksum_update,
111 .final = chksum_final,
112 .finup = chksum_finup,
113 .digest = chksum_digest,
114 .descsize = sizeof(struct chksum_desc_ctx),
115 .base = {
116 .cra_name = "crct10dif",
117 .cra_driver_name = "crct10dif-pclmul",
118 .cra_priority = 200,
119 .cra_blocksize = CRC_T10DIF_BLOCK_SIZE,
120 .cra_module = THIS_MODULE,
121 }
122};
123
124static const struct x86_cpu_id crct10dif_cpu_id[] = {
125 X86_FEATURE_MATCH(X86_FEATURE_PCLMULQDQ),
126 {}
127};
128MODULE_DEVICE_TABLE(x86cpu, crct10dif_cpu_id);
129
130static int __init crct10dif_intel_mod_init(void)
131{
132 if (!x86_match_cpu(crct10dif_cpu_id))
133 return -ENODEV;
134
135 return crypto_register_shash(&alg);
136}
137
138static void __exit crct10dif_intel_mod_fini(void)
139{
140 crypto_unregister_shash(&alg);
141}
142
143module_init(crct10dif_intel_mod_init);
144module_exit(crct10dif_intel_mod_fini);
145
146MODULE_AUTHOR("Tim Chen <tim.c.chen@linux.intel.com>");
147MODULE_DESCRIPTION("T10 DIF CRC calculation accelerated with PCLMULQDQ.");
148MODULE_LICENSE("GPL");
149
150MODULE_ALIAS("crct10dif");
151MODULE_ALIAS("crct10dif-pclmul");
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 904ffe838567..2754f2bf5d91 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -376,25 +376,6 @@ config CRYPTO_CRC32_PCLMUL
376 which will enable any routine to use the CRC-32-IEEE 802.3 checksum 376 which will enable any routine to use the CRC-32-IEEE 802.3 checksum
377 and gain better performance as compared with the table implementation. 377 and gain better performance as compared with the table implementation.
378 378
379config CRYPTO_CRCT10DIF
380 tristate "CRCT10DIF algorithm"
381 select CRYPTO_HASH
382 help
383 CRC T10 Data Integrity Field computation is being cast as
384 a crypto transform. This allows for faster crc t10 diff
385 transforms to be used if they are available.
386
387config CRYPTO_CRCT10DIF_PCLMUL
388 tristate "CRCT10DIF PCLMULQDQ hardware acceleration"
389 depends on X86 && 64BIT && CRC_T10DIF
390 select CRYPTO_HASH
391 help
392 For x86_64 processors with SSE4.2 and PCLMULQDQ supported,
393 CRC T10 DIF PCLMULQDQ computation can be hardware
394 accelerated PCLMULQDQ instruction. This option will create
395 'crct10dif-plcmul' module, which is faster when computing the
396 crct10dif checksum as compared with the generic table implementation.
397
398config CRYPTO_GHASH 379config CRYPTO_GHASH
399 tristate "GHASH digest algorithm" 380 tristate "GHASH digest algorithm"
400 select CRYPTO_GF128MUL 381 select CRYPTO_GF128MUL
diff --git a/crypto/Makefile b/crypto/Makefile
index 62af87df8729..a8e9b0fefbe9 100644
--- a/crypto/Makefile
+++ b/crypto/Makefile
@@ -83,7 +83,6 @@ obj-$(CONFIG_CRYPTO_ZLIB) += zlib.o
83obj-$(CONFIG_CRYPTO_MICHAEL_MIC) += michael_mic.o 83obj-$(CONFIG_CRYPTO_MICHAEL_MIC) += michael_mic.o
84obj-$(CONFIG_CRYPTO_CRC32C) += crc32c.o 84obj-$(CONFIG_CRYPTO_CRC32C) += crc32c.o
85obj-$(CONFIG_CRYPTO_CRC32) += crc32.o 85obj-$(CONFIG_CRYPTO_CRC32) += crc32.o
86obj-$(CONFIG_CRYPTO_CRCT10DIF) += crct10dif.o
87obj-$(CONFIG_CRYPTO_AUTHENC) += authenc.o authencesn.o 86obj-$(CONFIG_CRYPTO_AUTHENC) += authenc.o authencesn.o
88obj-$(CONFIG_CRYPTO_LZO) += lzo.o 87obj-$(CONFIG_CRYPTO_LZO) += lzo.o
89obj-$(CONFIG_CRYPTO_842) += 842.o 88obj-$(CONFIG_CRYPTO_842) += 842.o
diff --git a/crypto/crct10dif.c b/crypto/crct10dif.c
deleted file mode 100644
index 92aca96d6b98..000000000000
--- a/crypto/crct10dif.c
+++ /dev/null
@@ -1,178 +0,0 @@
1/*
2 * Cryptographic API.
3 *
4 * T10 Data Integrity Field CRC16 Crypto Transform
5 *
6 * Copyright (c) 2007 Oracle Corporation. All rights reserved.
7 * Written by Martin K. Petersen <martin.petersen@oracle.com>
8 * Copyright (C) 2013 Intel Corporation
9 * Author: Tim Chen <tim.c.chen@linux.intel.com>
10 *
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the Free
13 * Software Foundation; either version 2 of the License, or (at your option)
14 * any later version.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
20 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
21 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 * SOFTWARE.
24 *
25 */
26
27#include <linux/types.h>
28#include <linux/module.h>
29#include <linux/crc-t10dif.h>
30#include <crypto/internal/hash.h>
31#include <linux/init.h>
32#include <linux/string.h>
33#include <linux/kernel.h>
34
35struct chksum_desc_ctx {
36 __u16 crc;
37};
38
39/* Table generated using the following polynomium:
40 * x^16 + x^15 + x^11 + x^9 + x^8 + x^7 + x^5 + x^4 + x^2 + x + 1
41 * gt: 0x8bb7
42 */
43static const __u16 t10_dif_crc_table[256] = {
44 0x0000, 0x8BB7, 0x9CD9, 0x176E, 0xB205, 0x39B2, 0x2EDC, 0xA56B,
45 0xEFBD, 0x640A, 0x7364, 0xF8D3, 0x5DB8, 0xD60F, 0xC161, 0x4AD6,
46 0x54CD, 0xDF7A, 0xC814, 0x43A3, 0xE6C8, 0x6D7F, 0x7A11, 0xF1A6,
47 0xBB70, 0x30C7, 0x27A9, 0xAC1E, 0x0975, 0x82C2, 0x95AC, 0x1E1B,
48 0xA99A, 0x222D, 0x3543, 0xBEF4, 0x1B9F, 0x9028, 0x8746, 0x0CF1,
49 0x4627, 0xCD90, 0xDAFE, 0x5149, 0xF422, 0x7F95, 0x68FB, 0xE34C,
50 0xFD57, 0x76E0, 0x618E, 0xEA39, 0x4F52, 0xC4E5, 0xD38B, 0x583C,
51 0x12EA, 0x995D, 0x8E33, 0x0584, 0xA0EF, 0x2B58, 0x3C36, 0xB781,
52 0xD883, 0x5334, 0x445A, 0xCFED, 0x6A86, 0xE131, 0xF65F, 0x7DE8,
53 0x373E, 0xBC89, 0xABE7, 0x2050, 0x853B, 0x0E8C, 0x19E2, 0x9255,
54 0x8C4E, 0x07F9, 0x1097, 0x9B20, 0x3E4B, 0xB5FC, 0xA292, 0x2925,
55 0x63F3, 0xE844, 0xFF2A, 0x749D, 0xD1F6, 0x5A41, 0x4D2F, 0xC698,
56 0x7119, 0xFAAE, 0xEDC0, 0x6677, 0xC31C, 0x48AB, 0x5FC5, 0xD472,
57 0x9EA4, 0x1513, 0x027D, 0x89CA, 0x2CA1, 0xA716, 0xB078, 0x3BCF,
58 0x25D4, 0xAE63, 0xB90D, 0x32BA, 0x97D1, 0x1C66, 0x0B08, 0x80BF,
59 0xCA69, 0x41DE, 0x56B0, 0xDD07, 0x786C, 0xF3DB, 0xE4B5, 0x6F02,
60 0x3AB1, 0xB106, 0xA668, 0x2DDF, 0x88B4, 0x0303, 0x146D, 0x9FDA,
61 0xD50C, 0x5EBB, 0x49D5, 0xC262, 0x6709, 0xECBE, 0xFBD0, 0x7067,
62 0x6E7C, 0xE5CB, 0xF2A5, 0x7912, 0xDC79, 0x57CE, 0x40A0, 0xCB17,
63 0x81C1, 0x0A76, 0x1D18, 0x96AF, 0x33C4, 0xB873, 0xAF1D, 0x24AA,
64 0x932B, 0x189C, 0x0FF2, 0x8445, 0x212E, 0xAA99, 0xBDF7, 0x3640,
65 0x7C96, 0xF721, 0xE04F, 0x6BF8, 0xCE93, 0x4524, 0x524A, 0xD9FD,
66 0xC7E6, 0x4C51, 0x5B3F, 0xD088, 0x75E3, 0xFE54, 0xE93A, 0x628D,
67 0x285B, 0xA3EC, 0xB482, 0x3F35, 0x9A5E, 0x11E9, 0x0687, 0x8D30,
68 0xE232, 0x6985, 0x7EEB, 0xF55C, 0x5037, 0xDB80, 0xCCEE, 0x4759,
69 0x0D8F, 0x8638, 0x9156, 0x1AE1, 0xBF8A, 0x343D, 0x2353, 0xA8E4,
70 0xB6FF, 0x3D48, 0x2A26, 0xA191, 0x04FA, 0x8F4D, 0x9823, 0x1394,
71 0x5942, 0xD2F5, 0xC59B, 0x4E2C, 0xEB47, 0x60F0, 0x779E, 0xFC29,
72 0x4BA8, 0xC01F, 0xD771, 0x5CC6, 0xF9AD, 0x721A, 0x6574, 0xEEC3,
73 0xA415, 0x2FA2, 0x38CC, 0xB37B, 0x1610, 0x9DA7, 0x8AC9, 0x017E,
74 0x1F65, 0x94D2, 0x83BC, 0x080B, 0xAD60, 0x26D7, 0x31B9, 0xBA0E,
75 0xF0D8, 0x7B6F, 0x6C01, 0xE7B6, 0x42DD, 0xC96A, 0xDE04, 0x55B3
76};
77
78__u16 crc_t10dif_generic(__u16 crc, const unsigned char *buffer, size_t len)
79{
80 unsigned int i;
81
82 for (i = 0 ; i < len ; i++)
83 crc = (crc << 8) ^ t10_dif_crc_table[((crc >> 8) ^ buffer[i]) & 0xff];
84
85 return crc;
86}
87EXPORT_SYMBOL(crc_t10dif_generic);
88
89/*
90 * Steps through buffer one byte at at time, calculates reflected
91 * crc using table.
92 */
93
94static int chksum_init(struct shash_desc *desc)
95{
96 struct chksum_desc_ctx *ctx = shash_desc_ctx(desc);
97
98 ctx->crc = 0;
99
100 return 0;
101}
102
103static int chksum_update(struct shash_desc *desc, const u8 *data,
104 unsigned int length)
105{
106 struct chksum_desc_ctx *ctx = shash_desc_ctx(desc);
107
108 ctx->crc = crc_t10dif_generic(ctx->crc, data, length);
109 return 0;
110}
111
112static int chksum_final(struct shash_desc *desc, u8 *out)
113{
114 struct chksum_desc_ctx *ctx = shash_desc_ctx(desc);
115
116 *(__u16 *)out = ctx->crc;
117 return 0;
118}
119
120static int __chksum_finup(__u16 *crcp, const u8 *data, unsigned int len,
121 u8 *out)
122{
123 *(__u16 *)out = crc_t10dif_generic(*crcp, data, len);
124 return 0;
125}
126
127static int chksum_finup(struct shash_desc *desc, const u8 *data,
128 unsigned int len, u8 *out)
129{
130 struct chksum_desc_ctx *ctx = shash_desc_ctx(desc);
131
132 return __chksum_finup(&ctx->crc, data, len, out);
133}
134
135static int chksum_digest(struct shash_desc *desc, const u8 *data,
136 unsigned int length, u8 *out)
137{
138 struct chksum_desc_ctx *ctx = shash_desc_ctx(desc);
139
140 return __chksum_finup(&ctx->crc, data, length, out);
141}
142
143static struct shash_alg alg = {
144 .digestsize = CRC_T10DIF_DIGEST_SIZE,
145 .init = chksum_init,
146 .update = chksum_update,
147 .final = chksum_final,
148 .finup = chksum_finup,
149 .digest = chksum_digest,
150 .descsize = sizeof(struct chksum_desc_ctx),
151 .base = {
152 .cra_name = "crct10dif",
153 .cra_driver_name = "crct10dif-generic",
154 .cra_priority = 100,
155 .cra_blocksize = CRC_T10DIF_BLOCK_SIZE,
156 .cra_module = THIS_MODULE,
157 }
158};
159
160static int __init crct10dif_mod_init(void)
161{
162 int ret;
163
164 ret = crypto_register_shash(&alg);
165 return ret;
166}
167
168static void __exit crct10dif_mod_fini(void)
169{
170 crypto_unregister_shash(&alg);
171}
172
173module_init(crct10dif_mod_init);
174module_exit(crct10dif_mod_fini);
175
176MODULE_AUTHOR("Tim Chen <tim.c.chen@linux.intel.com>");
177MODULE_DESCRIPTION("T10 DIF CRC calculation.");
178MODULE_LICENSE("GPL");
diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c
index 25a5934f0e50..66d254ce0d11 100644
--- a/crypto/tcrypt.c
+++ b/crypto/tcrypt.c
@@ -1174,10 +1174,6 @@ static int do_test(int m)
1174 ret += tcrypt_test("ghash"); 1174 ret += tcrypt_test("ghash");
1175 break; 1175 break;
1176 1176
1177 case 47:
1178 ret += tcrypt_test("crct10dif");
1179 break;
1180
1181 case 100: 1177 case 100:
1182 ret += tcrypt_test("hmac(md5)"); 1178 ret += tcrypt_test("hmac(md5)");
1183 break; 1179 break;
@@ -1502,10 +1498,6 @@ static int do_test(int m)
1502 test_hash_speed("crc32c", sec, generic_hash_speed_template); 1498 test_hash_speed("crc32c", sec, generic_hash_speed_template);
1503 if (mode > 300 && mode < 400) break; 1499 if (mode > 300 && mode < 400) break;
1504 1500
1505 case 320:
1506 test_hash_speed("crct10dif", sec, generic_hash_speed_template);
1507 if (mode > 300 && mode < 400) break;
1508
1509 case 399: 1501 case 399:
1510 break; 1502 break;
1511 1503
diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index 2f00607039e2..ecddf921a9db 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -2046,16 +2046,6 @@ static const struct alg_test_desc alg_test_descs[] = {
2046 } 2046 }
2047 } 2047 }
2048 }, { 2048 }, {
2049 .alg = "crct10dif",
2050 .test = alg_test_hash,
2051 .fips_allowed = 1,
2052 .suite = {
2053 .hash = {
2054 .vecs = crct10dif_tv_template,
2055 .count = CRCT10DIF_TEST_VECTORS
2056 }
2057 }
2058 }, {
2059 .alg = "cryptd(__driver-cbc-aes-aesni)", 2049 .alg = "cryptd(__driver-cbc-aes-aesni)",
2060 .test = alg_test_null, 2050 .test = alg_test_null,
2061 .fips_allowed = 1, 2051 .fips_allowed = 1,
diff --git a/crypto/testmgr.h b/crypto/testmgr.h
index 7d44aa3d6b44..1e701bc075b9 100644
--- a/crypto/testmgr.h
+++ b/crypto/testmgr.h
@@ -450,39 +450,6 @@ static struct hash_testvec rmd320_tv_template[] = {
450 } 450 }
451}; 451};
452 452
453#define CRCT10DIF_TEST_VECTORS 3
454static struct hash_testvec crct10dif_tv_template[] = {
455 {
456 .plaintext = "abc",
457 .psize = 3,
458#ifdef __LITTLE_ENDIAN
459 .digest = "\x3b\x44",
460#else
461 .digest = "\x44\x3b",
462#endif
463 }, {
464 .plaintext = "1234567890123456789012345678901234567890"
465 "123456789012345678901234567890123456789",
466 .psize = 79,
467#ifdef __LITTLE_ENDIAN
468 .digest = "\x70\x4b",
469#else
470 .digest = "\x4b\x70",
471#endif
472 }, {
473 .plaintext =
474 "abcddddddddddddddddddddddddddddddddddddddddddddddddddddd",
475 .psize = 56,
476#ifdef __LITTLE_ENDIAN
477 .digest = "\xe3\x9c",
478#else
479 .digest = "\x9c\xe3",
480#endif
481 .np = 2,
482 .tap = { 28, 28 }
483 }
484};
485
486/* 453/*
487 * SHA1 test vectors from from FIPS PUB 180-1 454 * SHA1 test vectors from from FIPS PUB 180-1
488 * Long vector from CAVS 5.0 455 * Long vector from CAVS 5.0
diff --git a/include/linux/crc-t10dif.h b/include/linux/crc-t10dif.h
index b3cb71f0d3b0..a9c96d865ee7 100644
--- a/include/linux/crc-t10dif.h
+++ b/include/linux/crc-t10dif.h
@@ -3,10 +3,6 @@
3 3
4#include <linux/types.h> 4#include <linux/types.h>
5 5
6#define CRC_T10DIF_DIGEST_SIZE 2
7#define CRC_T10DIF_BLOCK_SIZE 1
8
9__u16 crc_t10dif_generic(__u16 crc, const unsigned char *buffer, size_t len);
10__u16 crc_t10dif(unsigned char const *, size_t); 6__u16 crc_t10dif(unsigned char const *, size_t);
11 7
12#endif 8#endif
diff --git a/lib/Kconfig b/lib/Kconfig
index 339d5a4292f8..fe01d418b09a 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -63,8 +63,6 @@ config CRC16
63 63
64config CRC_T10DIF 64config CRC_T10DIF
65 tristate "CRC calculation for the T10 Data Integrity Field" 65 tristate "CRC calculation for the T10 Data Integrity Field"
66 select CRYPTO
67 select CRYPTO_CRCT10DIF
68 help 66 help
69 This option is only needed if a module that's not in the 67 This option is only needed if a module that's not in the
70 kernel tree needs to calculate CRC checks for use with the 68 kernel tree needs to calculate CRC checks for use with the
diff --git a/lib/crc-t10dif.c b/lib/crc-t10dif.c
index fe3428c07b47..fbbd66ed86cd 100644
--- a/lib/crc-t10dif.c
+++ b/lib/crc-t10dif.c
@@ -11,44 +11,57 @@
11#include <linux/types.h> 11#include <linux/types.h>
12#include <linux/module.h> 12#include <linux/module.h>
13#include <linux/crc-t10dif.h> 13#include <linux/crc-t10dif.h>
14#include <linux/err.h>
15#include <linux/init.h>
16#include <crypto/hash.h>
17 14
18static struct crypto_shash *crct10dif_tfm; 15/* Table generated using the following polynomium:
16 * x^16 + x^15 + x^11 + x^9 + x^8 + x^7 + x^5 + x^4 + x^2 + x + 1
17 * gt: 0x8bb7
18 */
19static const __u16 t10_dif_crc_table[256] = {
20 0x0000, 0x8BB7, 0x9CD9, 0x176E, 0xB205, 0x39B2, 0x2EDC, 0xA56B,
21 0xEFBD, 0x640A, 0x7364, 0xF8D3, 0x5DB8, 0xD60F, 0xC161, 0x4AD6,
22 0x54CD, 0xDF7A, 0xC814, 0x43A3, 0xE6C8, 0x6D7F, 0x7A11, 0xF1A6,
23 0xBB70, 0x30C7, 0x27A9, 0xAC1E, 0x0975, 0x82C2, 0x95AC, 0x1E1B,
24 0xA99A, 0x222D, 0x3543, 0xBEF4, 0x1B9F, 0x9028, 0x8746, 0x0CF1,
25 0x4627, 0xCD90, 0xDAFE, 0x5149, 0xF422, 0x7F95, 0x68FB, 0xE34C,
26 0xFD57, 0x76E0, 0x618E, 0xEA39, 0x4F52, 0xC4E5, 0xD38B, 0x583C,
27 0x12EA, 0x995D, 0x8E33, 0x0584, 0xA0EF, 0x2B58, 0x3C36, 0xB781,
28 0xD883, 0x5334, 0x445A, 0xCFED, 0x6A86, 0xE131, 0xF65F, 0x7DE8,
29 0x373E, 0xBC89, 0xABE7, 0x2050, 0x853B, 0x0E8C, 0x19E2, 0x9255,
30 0x8C4E, 0x07F9, 0x1097, 0x9B20, 0x3E4B, 0xB5FC, 0xA292, 0x2925,
31 0x63F3, 0xE844, 0xFF2A, 0x749D, 0xD1F6, 0x5A41, 0x4D2F, 0xC698,
32 0x7119, 0xFAAE, 0xEDC0, 0x6677, 0xC31C, 0x48AB, 0x5FC5, 0xD472,
33 0x9EA4, 0x1513, 0x027D, 0x89CA, 0x2CA1, 0xA716, 0xB078, 0x3BCF,
34 0x25D4, 0xAE63, 0xB90D, 0x32BA, 0x97D1, 0x1C66, 0x0B08, 0x80BF,
35 0xCA69, 0x41DE, 0x56B0, 0xDD07, 0x786C, 0xF3DB, 0xE4B5, 0x6F02,
36 0x3AB1, 0xB106, 0xA668, 0x2DDF, 0x88B4, 0x0303, 0x146D, 0x9FDA,
37 0xD50C, 0x5EBB, 0x49D5, 0xC262, 0x6709, 0xECBE, 0xFBD0, 0x7067,
38 0x6E7C, 0xE5CB, 0xF2A5, 0x7912, 0xDC79, 0x57CE, 0x40A0, 0xCB17,
39 0x81C1, 0x0A76, 0x1D18, 0x96AF, 0x33C4, 0xB873, 0xAF1D, 0x24AA,
40 0x932B, 0x189C, 0x0FF2, 0x8445, 0x212E, 0xAA99, 0xBDF7, 0x3640,
41 0x7C96, 0xF721, 0xE04F, 0x6BF8, 0xCE93, 0x4524, 0x524A, 0xD9FD,
42 0xC7E6, 0x4C51, 0x5B3F, 0xD088, 0x75E3, 0xFE54, 0xE93A, 0x628D,
43 0x285B, 0xA3EC, 0xB482, 0x3F35, 0x9A5E, 0x11E9, 0x0687, 0x8D30,
44 0xE232, 0x6985, 0x7EEB, 0xF55C, 0x5037, 0xDB80, 0xCCEE, 0x4759,
45 0x0D8F, 0x8638, 0x9156, 0x1AE1, 0xBF8A, 0x343D, 0x2353, 0xA8E4,
46 0xB6FF, 0x3D48, 0x2A26, 0xA191, 0x04FA, 0x8F4D, 0x9823, 0x1394,
47 0x5942, 0xD2F5, 0xC59B, 0x4E2C, 0xEB47, 0x60F0, 0x779E, 0xFC29,
48 0x4BA8, 0xC01F, 0xD771, 0x5CC6, 0xF9AD, 0x721A, 0x6574, 0xEEC3,
49 0xA415, 0x2FA2, 0x38CC, 0xB37B, 0x1610, 0x9DA7, 0x8AC9, 0x017E,
50 0x1F65, 0x94D2, 0x83BC, 0x080B, 0xAD60, 0x26D7, 0x31B9, 0xBA0E,
51 0xF0D8, 0x7B6F, 0x6C01, 0xE7B6, 0x42DD, 0xC96A, 0xDE04, 0x55B3
52};
19 53
20__u16 crc_t10dif(const unsigned char *buffer, size_t len) 54__u16 crc_t10dif(const unsigned char *buffer, size_t len)
21{ 55{
22 struct { 56 __u16 crc = 0;
23 struct shash_desc shash; 57 unsigned int i;
24 char ctx[2];
25 } desc;
26 int err;
27
28 desc.shash.tfm = crct10dif_tfm;
29 desc.shash.flags = 0;
30 *(__u16 *)desc.ctx = 0;
31 58
32 err = crypto_shash_update(&desc.shash, buffer, len); 59 for (i = 0 ; i < len ; i++)
33 BUG_ON(err); 60 crc = (crc << 8) ^ t10_dif_crc_table[((crc >> 8) ^ buffer[i]) & 0xff];
34 61
35 return *(__u16 *)desc.ctx; 62 return crc;
36} 63}
37EXPORT_SYMBOL(crc_t10dif); 64EXPORT_SYMBOL(crc_t10dif);
38 65
39static int __init crc_t10dif_mod_init(void)
40{
41 crct10dif_tfm = crypto_alloc_shash("crct10dif", 0, 0);
42 return PTR_RET(crct10dif_tfm);
43}
44
45static void __exit crc_t10dif_mod_fini(void)
46{
47 crypto_free_shash(crct10dif_tfm);
48}
49
50module_init(crc_t10dif_mod_init);
51module_exit(crc_t10dif_mod_fini);
52
53MODULE_DESCRIPTION("T10 DIF CRC calculation"); 66MODULE_DESCRIPTION("T10 DIF CRC calculation");
54MODULE_LICENSE("GPL"); 67MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-08 00:49:15 -0400