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cf637391 TC |
1 | /* |
2 | * CDDL HEADER START | |
3 | * | |
4 | * The contents of this file are subject to the terms of the | |
5 | * Common Development and Distribution License (the "License"). | |
6 | * You may not use this file except in compliance with the License. | |
7 | * | |
8 | * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
9 | * or http://www.opensolaris.org/os/licensing. | |
10 | * See the License for the specific language governing permissions | |
11 | * and limitations under the License. | |
12 | * | |
13 | * When distributing Covered Code, include this CDDL HEADER in each | |
14 | * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
15 | * If applicable, add the following below this CDDL HEADER, with the | |
16 | * fields enclosed by brackets "[]" replaced with your own identifying | |
17 | * information: Portions Copyright [yyyy] [name of copyright owner] | |
18 | * | |
19 | * CDDL HEADER END | |
20 | */ | |
21 | ||
38742209 TC |
22 | /* |
23 | * This file represents the QAT implementation of checksums and encryption. | |
24 | * Internally, QAT shares the same cryptographic instances for both of these | |
25 | * operations, so the code has been combined here. QAT data compression uses | |
26 | * compression instances, so that code is separated into qat_compress.c | |
27 | */ | |
28 | ||
cf637391 TC |
29 | #if defined(_KERNEL) && defined(HAVE_QAT) |
30 | #include <linux/slab.h> | |
31 | #include <linux/vmalloc.h> | |
32 | #include <linux/pagemap.h> | |
33 | #include <linux/completion.h> | |
34 | #include <sys/zfs_context.h> | |
35 | #include <sys/zio_crypt.h> | |
36 | #include "lac/cpa_cy_im.h" | |
38742209 | 37 | #include "lac/cpa_cy_common.h" |
cf637391 TC |
38 | #include "qat.h" |
39 | ||
40 | /* | |
8d9e7c8f TC |
41 | * Max instances in a QAT device, each instance is a channel to submit |
42 | * jobs to QAT hardware, this is only for pre-allocating instances | |
43 | * and session arrays; the actual number of instances are defined in | |
cf637391 TC |
44 | * the QAT driver's configure file. |
45 | */ | |
46 | #define QAT_CRYPT_MAX_INSTANCES 48 | |
47 | ||
48 | #define MAX_PAGE_NUM 1024 | |
49 | ||
bc8a6a60 | 50 | static Cpa32U inst_num = 0; |
cf637391 TC |
51 | static Cpa16U num_inst = 0; |
52 | static CpaInstanceHandle cy_inst_handles[QAT_CRYPT_MAX_INSTANCES]; | |
38742209 TC |
53 | static boolean_t qat_crypt_init_done = B_FALSE; |
54 | int zfs_qat_encrypt_disable = 0; | |
55 | int zfs_qat_checksum_disable = 0; | |
cf637391 TC |
56 | |
57 | typedef struct cy_callback { | |
58 | CpaBoolean verify_result; | |
59 | struct completion complete; | |
60 | } cy_callback_t; | |
61 | ||
62 | static void | |
63 | symcallback(void *p_callback, CpaStatus status, const CpaCySymOp operation, | |
64 | void *op_data, CpaBufferList *buf_list_dst, CpaBoolean verify) | |
65 | { | |
66 | cy_callback_t *cb = p_callback; | |
67 | ||
68 | if (cb != NULL) { | |
69 | /* indicate that the function has been called */ | |
70 | cb->verify_result = verify; | |
71 | complete(&cb->complete); | |
72 | } | |
73 | } | |
74 | ||
75 | boolean_t | |
76 | qat_crypt_use_accel(size_t s_len) | |
77 | { | |
38742209 TC |
78 | return (!zfs_qat_encrypt_disable && |
79 | qat_crypt_init_done && | |
80 | s_len >= QAT_MIN_BUF_SIZE && | |
81 | s_len <= QAT_MAX_BUF_SIZE); | |
82 | } | |
83 | ||
84 | boolean_t | |
85 | qat_checksum_use_accel(size_t s_len) | |
86 | { | |
87 | return (!zfs_qat_checksum_disable && | |
cf637391 TC |
88 | qat_crypt_init_done && |
89 | s_len >= QAT_MIN_BUF_SIZE && | |
90 | s_len <= QAT_MAX_BUF_SIZE); | |
91 | } | |
92 | ||
93 | void | |
94 | qat_crypt_clean(void) | |
95 | { | |
bc8a6a60 | 96 | for (Cpa16U i = 0; i < num_inst; i++) |
cf637391 TC |
97 | cpaCyStopInstance(cy_inst_handles[i]); |
98 | ||
99 | num_inst = 0; | |
100 | qat_crypt_init_done = B_FALSE; | |
101 | } | |
102 | ||
103 | int | |
104 | qat_crypt_init(void) | |
105 | { | |
cf637391 TC |
106 | CpaStatus status = CPA_STATUS_FAIL; |
107 | ||
108 | status = cpaCyGetNumInstances(&num_inst); | |
109 | if (status != CPA_STATUS_SUCCESS) | |
110 | return (-1); | |
111 | ||
112 | /* if the user has configured no QAT encryption units just return */ | |
113 | if (num_inst == 0) | |
114 | return (0); | |
115 | ||
116 | if (num_inst > QAT_CRYPT_MAX_INSTANCES) | |
117 | num_inst = QAT_CRYPT_MAX_INSTANCES; | |
118 | ||
119 | status = cpaCyGetInstances(num_inst, &cy_inst_handles[0]); | |
120 | if (status != CPA_STATUS_SUCCESS) | |
121 | return (-1); | |
122 | ||
bc8a6a60 | 123 | for (Cpa16U i = 0; i < num_inst; i++) { |
cf637391 TC |
124 | status = cpaCySetAddressTranslation(cy_inst_handles[i], |
125 | (void *)virt_to_phys); | |
126 | if (status != CPA_STATUS_SUCCESS) | |
127 | goto error; | |
128 | ||
129 | status = cpaCyStartInstance(cy_inst_handles[i]); | |
130 | if (status != CPA_STATUS_SUCCESS) | |
131 | goto error; | |
132 | } | |
133 | ||
134 | qat_crypt_init_done = B_TRUE; | |
135 | return (0); | |
136 | ||
137 | error: | |
138 | qat_crypt_clean(); | |
139 | return (-1); | |
140 | } | |
141 | ||
142 | void | |
143 | qat_crypt_fini(void) | |
144 | { | |
145 | if (!qat_crypt_init_done) | |
146 | return; | |
147 | ||
148 | qat_crypt_clean(); | |
149 | } | |
150 | ||
151 | static CpaStatus | |
38742209 | 152 | qat_init_crypt_session_ctx(qat_encrypt_dir_t dir, CpaInstanceHandle inst_handle, |
cf637391 TC |
153 | CpaCySymSessionCtx **cy_session_ctx, crypto_key_t *key, |
154 | Cpa64U crypt, Cpa32U aad_len) | |
155 | { | |
156 | CpaStatus status = CPA_STATUS_SUCCESS; | |
157 | Cpa32U ctx_size; | |
158 | Cpa32U ciper_algorithm; | |
159 | Cpa32U hash_algorithm; | |
160 | CpaCySymSessionSetupData sd = { 0 }; | |
161 | ||
162 | if (zio_crypt_table[crypt].ci_crypt_type == ZC_TYPE_CCM) { | |
163 | return (CPA_STATUS_FAIL); | |
164 | } else { | |
165 | ciper_algorithm = CPA_CY_SYM_CIPHER_AES_GCM; | |
166 | hash_algorithm = CPA_CY_SYM_HASH_AES_GCM; | |
167 | } | |
168 | ||
169 | sd.cipherSetupData.cipherAlgorithm = ciper_algorithm; | |
170 | sd.cipherSetupData.pCipherKey = key->ck_data; | |
171 | sd.cipherSetupData.cipherKeyLenInBytes = key->ck_length / 8; | |
172 | sd.hashSetupData.hashAlgorithm = hash_algorithm; | |
173 | sd.hashSetupData.hashMode = CPA_CY_SYM_HASH_MODE_AUTH; | |
174 | sd.hashSetupData.digestResultLenInBytes = ZIO_DATA_MAC_LEN; | |
175 | sd.hashSetupData.authModeSetupData.aadLenInBytes = aad_len; | |
176 | sd.sessionPriority = CPA_CY_PRIORITY_NORMAL; | |
177 | sd.symOperation = CPA_CY_SYM_OP_ALGORITHM_CHAINING; | |
178 | sd.digestIsAppended = CPA_FALSE; | |
179 | sd.verifyDigest = CPA_FALSE; | |
180 | ||
181 | if (dir == QAT_ENCRYPT) { | |
182 | sd.cipherSetupData.cipherDirection = | |
183 | CPA_CY_SYM_CIPHER_DIRECTION_ENCRYPT; | |
184 | sd.algChainOrder = | |
185 | CPA_CY_SYM_ALG_CHAIN_ORDER_HASH_THEN_CIPHER; | |
186 | } else { | |
187 | ASSERT3U(dir, ==, QAT_DECRYPT); | |
188 | sd.cipherSetupData.cipherDirection = | |
189 | CPA_CY_SYM_CIPHER_DIRECTION_DECRYPT; | |
190 | sd.algChainOrder = | |
191 | CPA_CY_SYM_ALG_CHAIN_ORDER_CIPHER_THEN_HASH; | |
192 | } | |
193 | ||
194 | status = cpaCySymSessionCtxGetSize(inst_handle, &sd, &ctx_size); | |
195 | if (status != CPA_STATUS_SUCCESS) | |
196 | return (status); | |
197 | ||
198 | status = QAT_PHYS_CONTIG_ALLOC(cy_session_ctx, ctx_size); | |
199 | if (status != CPA_STATUS_SUCCESS) | |
200 | return (status); | |
201 | ||
202 | status = cpaCySymInitSession(inst_handle, symcallback, &sd, | |
203 | *cy_session_ctx); | |
204 | if (status != CPA_STATUS_SUCCESS) { | |
205 | QAT_PHYS_CONTIG_FREE(*cy_session_ctx); | |
206 | return (status); | |
207 | } | |
208 | ||
209 | return (CPA_STATUS_SUCCESS); | |
210 | } | |
211 | ||
212 | static CpaStatus | |
38742209 TC |
213 | qat_init_checksum_session_ctx(CpaInstanceHandle inst_handle, |
214 | CpaCySymSessionCtx **cy_session_ctx, Cpa64U cksum) | |
215 | { | |
216 | CpaStatus status = CPA_STATUS_SUCCESS; | |
217 | Cpa32U ctx_size; | |
218 | Cpa32U hash_algorithm; | |
219 | CpaCySymSessionSetupData sd = { 0 }; | |
220 | ||
221 | /* | |
222 | * ZFS's SHA512 checksum is actually SHA512/256, which uses | |
223 | * a different IV from standard SHA512. QAT does not support | |
224 | * SHA512/256, so we can only support SHA256. | |
225 | */ | |
226 | if (cksum == ZIO_CHECKSUM_SHA256) | |
227 | hash_algorithm = CPA_CY_SYM_HASH_SHA256; | |
228 | else | |
229 | return (CPA_STATUS_FAIL); | |
230 | ||
231 | sd.sessionPriority = CPA_CY_PRIORITY_NORMAL; | |
232 | sd.symOperation = CPA_CY_SYM_OP_HASH; | |
233 | sd.hashSetupData.hashAlgorithm = hash_algorithm; | |
234 | sd.hashSetupData.hashMode = CPA_CY_SYM_HASH_MODE_PLAIN; | |
235 | sd.hashSetupData.digestResultLenInBytes = sizeof (zio_cksum_t); | |
236 | sd.digestIsAppended = CPA_FALSE; | |
237 | sd.verifyDigest = CPA_FALSE; | |
238 | ||
239 | status = cpaCySymSessionCtxGetSize(inst_handle, &sd, &ctx_size); | |
240 | if (status != CPA_STATUS_SUCCESS) | |
241 | return (status); | |
242 | ||
243 | status = QAT_PHYS_CONTIG_ALLOC(cy_session_ctx, ctx_size); | |
244 | if (status != CPA_STATUS_SUCCESS) | |
245 | return (status); | |
246 | ||
247 | status = cpaCySymInitSession(inst_handle, symcallback, &sd, | |
248 | *cy_session_ctx); | |
249 | if (status != CPA_STATUS_SUCCESS) { | |
250 | QAT_PHYS_CONTIG_FREE(*cy_session_ctx); | |
251 | return (status); | |
252 | } | |
253 | ||
254 | return (CPA_STATUS_SUCCESS); | |
255 | } | |
256 | ||
257 | static CpaStatus | |
258 | qat_init_cy_buffer_lists(CpaInstanceHandle inst_handle, uint32_t nr_bufs, | |
cf637391 TC |
259 | CpaBufferList *src, CpaBufferList *dst) |
260 | { | |
261 | CpaStatus status = CPA_STATUS_SUCCESS; | |
262 | Cpa32U meta_size = 0; | |
263 | ||
264 | status = cpaCyBufferListGetMetaSize(inst_handle, nr_bufs, &meta_size); | |
265 | if (status != CPA_STATUS_SUCCESS) | |
266 | return (status); | |
267 | ||
cf637391 TC |
268 | status = QAT_PHYS_CONTIG_ALLOC(&src->pPrivateMetaData, meta_size); |
269 | if (status != CPA_STATUS_SUCCESS) | |
270 | goto error; | |
271 | ||
272 | if (src != dst) { | |
cf637391 TC |
273 | status = QAT_PHYS_CONTIG_ALLOC(&dst->pPrivateMetaData, |
274 | meta_size); | |
275 | if (status != CPA_STATUS_SUCCESS) | |
276 | goto error; | |
277 | } | |
278 | ||
279 | return (CPA_STATUS_SUCCESS); | |
280 | ||
281 | error: | |
282 | QAT_PHYS_CONTIG_FREE(src->pPrivateMetaData); | |
283 | if (src != dst) | |
284 | QAT_PHYS_CONTIG_FREE(dst->pPrivateMetaData); | |
285 | ||
286 | return (status); | |
287 | } | |
288 | ||
289 | int | |
290 | qat_crypt(qat_encrypt_dir_t dir, uint8_t *src_buf, uint8_t *dst_buf, | |
291 | uint8_t *aad_buf, uint32_t aad_len, uint8_t *iv_buf, uint8_t *digest_buf, | |
292 | crypto_key_t *key, uint64_t crypt, uint32_t enc_len) | |
293 | { | |
294 | CpaStatus status = CPA_STATUS_SUCCESS; | |
295 | Cpa16U i; | |
296 | CpaInstanceHandle cy_inst_handle; | |
17dd8835 | 297 | Cpa16U nr_bufs = (enc_len >> PAGE_SHIFT) + 2; |
cf637391 | 298 | Cpa32U bytes_left = 0; |
17dd8835 | 299 | Cpa8S *data = NULL; |
cf637391 TC |
300 | CpaCySymSessionCtx *cy_session_ctx = NULL; |
301 | cy_callback_t cb; | |
302 | CpaCySymOpData op_data = { 0 }; | |
303 | CpaBufferList src_buffer_list = { 0 }; | |
304 | CpaBufferList dst_buffer_list = { 0 }; | |
305 | CpaFlatBuffer *flat_src_buf_array = NULL; | |
306 | CpaFlatBuffer *flat_src_buf = NULL; | |
307 | CpaFlatBuffer *flat_dst_buf_array = NULL; | |
308 | CpaFlatBuffer *flat_dst_buf = NULL; | |
309 | struct page *in_pages[MAX_PAGE_NUM]; | |
310 | struct page *out_pages[MAX_PAGE_NUM]; | |
17dd8835 TC |
311 | Cpa32U in_page_num = 0; |
312 | Cpa32U out_page_num = 0; | |
38742209 TC |
313 | Cpa32U in_page_off = 0; |
314 | Cpa32U out_page_off = 0; | |
cf637391 TC |
315 | |
316 | if (dir == QAT_ENCRYPT) { | |
317 | QAT_STAT_BUMP(encrypt_requests); | |
318 | QAT_STAT_INCR(encrypt_total_in_bytes, enc_len); | |
319 | } else { | |
320 | QAT_STAT_BUMP(decrypt_requests); | |
321 | QAT_STAT_INCR(decrypt_total_in_bytes, enc_len); | |
322 | } | |
323 | ||
bc8a6a60 | 324 | i = (Cpa32U)atomic_inc_32_nv(&inst_num) % num_inst; |
cf637391 TC |
325 | cy_inst_handle = cy_inst_handles[i]; |
326 | ||
38742209 TC |
327 | status = qat_init_crypt_session_ctx(dir, cy_inst_handle, |
328 | &cy_session_ctx, key, crypt, aad_len); | |
329 | if (status != CPA_STATUS_SUCCESS) { | |
330 | /* don't count CCM as a failure since it's not supported */ | |
331 | if (zio_crypt_table[crypt].ci_crypt_type == ZC_TYPE_GCM) | |
332 | QAT_STAT_BUMP(crypt_fails); | |
cf637391 | 333 | return (status); |
38742209 | 334 | } |
cf637391 | 335 | |
17dd8835 TC |
336 | /* |
337 | * We increment nr_bufs by 2 to allow us to handle non | |
338 | * page-aligned buffer addresses and buffers whose sizes | |
339 | * are not divisible by PAGE_SIZE. | |
340 | */ | |
38742209 TC |
341 | status = qat_init_cy_buffer_lists(cy_inst_handle, nr_bufs, |
342 | &src_buffer_list, &dst_buffer_list); | |
cf637391 TC |
343 | if (status != CPA_STATUS_SUCCESS) |
344 | goto fail; | |
345 | ||
346 | status = QAT_PHYS_CONTIG_ALLOC(&flat_src_buf_array, | |
347 | nr_bufs * sizeof (CpaFlatBuffer)); | |
348 | if (status != CPA_STATUS_SUCCESS) | |
349 | goto fail; | |
350 | status = QAT_PHYS_CONTIG_ALLOC(&flat_dst_buf_array, | |
351 | nr_bufs * sizeof (CpaFlatBuffer)); | |
352 | if (status != CPA_STATUS_SUCCESS) | |
353 | goto fail; | |
354 | ||
355 | bytes_left = enc_len; | |
17dd8835 | 356 | data = src_buf; |
cf637391 | 357 | flat_src_buf = flat_src_buf_array; |
cf637391 | 358 | while (bytes_left > 0) { |
17dd8835 TC |
359 | in_page_off = ((long)data & ~PAGE_MASK); |
360 | in_pages[in_page_num] = qat_mem_to_page(data); | |
361 | flat_src_buf->pData = kmap(in_pages[in_page_num]) + in_page_off; | |
38742209 | 362 | flat_src_buf->dataLenInBytes = |
17dd8835 TC |
363 | min((long)PAGE_SIZE - in_page_off, (long)bytes_left); |
364 | data += flat_src_buf->dataLenInBytes; | |
cf637391 TC |
365 | bytes_left -= flat_src_buf->dataLenInBytes; |
366 | flat_src_buf++; | |
17dd8835 | 367 | in_page_num++; |
cf637391 TC |
368 | } |
369 | src_buffer_list.pBuffers = flat_src_buf_array; | |
17dd8835 TC |
370 | src_buffer_list.numBuffers = in_page_num; |
371 | ||
372 | bytes_left = enc_len; | |
373 | data = dst_buf; | |
374 | flat_dst_buf = flat_dst_buf_array; | |
375 | while (bytes_left > 0) { | |
376 | out_page_off = ((long)data & ~PAGE_MASK); | |
377 | out_pages[out_page_num] = qat_mem_to_page(data); | |
378 | flat_dst_buf->pData = kmap(out_pages[out_page_num]) + | |
379 | out_page_off; | |
380 | flat_dst_buf->dataLenInBytes = | |
381 | min((long)PAGE_SIZE - out_page_off, (long)bytes_left); | |
382 | data += flat_dst_buf->dataLenInBytes; | |
383 | bytes_left -= flat_dst_buf->dataLenInBytes; | |
384 | flat_dst_buf++; | |
385 | out_page_num++; | |
386 | } | |
cf637391 | 387 | dst_buffer_list.pBuffers = flat_dst_buf_array; |
17dd8835 | 388 | dst_buffer_list.numBuffers = out_page_num; |
cf637391 TC |
389 | |
390 | op_data.sessionCtx = cy_session_ctx; | |
391 | op_data.packetType = CPA_CY_SYM_PACKET_TYPE_FULL; | |
392 | op_data.pIv = NULL; /* set this later as the J0 block */ | |
393 | op_data.ivLenInBytes = 0; | |
394 | op_data.cryptoStartSrcOffsetInBytes = 0; | |
395 | op_data.messageLenToCipherInBytes = 0; | |
396 | op_data.hashStartSrcOffsetInBytes = 0; | |
397 | op_data.messageLenToHashInBytes = 0; | |
398 | op_data.pDigestResult = 0; | |
399 | op_data.messageLenToCipherInBytes = enc_len; | |
400 | op_data.ivLenInBytes = ZIO_DATA_IV_LEN; | |
401 | op_data.pDigestResult = digest_buf; | |
402 | op_data.pAdditionalAuthData = aad_buf; | |
403 | op_data.pIv = iv_buf; | |
404 | ||
405 | cb.verify_result = CPA_FALSE; | |
406 | init_completion(&cb.complete); | |
407 | status = cpaCySymPerformOp(cy_inst_handle, &cb, &op_data, | |
408 | &src_buffer_list, &dst_buffer_list, NULL); | |
409 | if (status != CPA_STATUS_SUCCESS) | |
410 | goto fail; | |
411 | ||
412 | if (!wait_for_completion_interruptible_timeout(&cb.complete, | |
413 | QAT_TIMEOUT_MS)) { | |
414 | status = CPA_STATUS_FAIL; | |
415 | goto fail; | |
416 | } | |
417 | ||
418 | if (cb.verify_result == CPA_FALSE) { | |
419 | status = CPA_STATUS_FAIL; | |
420 | goto fail; | |
421 | } | |
422 | ||
423 | if (dir == QAT_ENCRYPT) | |
424 | QAT_STAT_INCR(encrypt_total_out_bytes, enc_len); | |
425 | else | |
426 | QAT_STAT_INCR(decrypt_total_out_bytes, enc_len); | |
427 | ||
428 | fail: | |
38742209 | 429 | if (status != CPA_STATUS_SUCCESS) |
cf637391 TC |
430 | QAT_STAT_BUMP(crypt_fails); |
431 | ||
17dd8835 | 432 | for (i = 0; i < in_page_num; i++) |
cf637391 | 433 | kunmap(in_pages[i]); |
17dd8835 | 434 | for (i = 0; i < out_page_num; i++) |
cf637391 | 435 | kunmap(out_pages[i]); |
cf637391 TC |
436 | |
437 | cpaCySymRemoveSession(cy_inst_handle, cy_session_ctx); | |
438 | QAT_PHYS_CONTIG_FREE(src_buffer_list.pPrivateMetaData); | |
439 | QAT_PHYS_CONTIG_FREE(dst_buffer_list.pPrivateMetaData); | |
440 | QAT_PHYS_CONTIG_FREE(cy_session_ctx); | |
441 | QAT_PHYS_CONTIG_FREE(flat_src_buf_array); | |
442 | QAT_PHYS_CONTIG_FREE(flat_dst_buf_array); | |
443 | ||
444 | return (status); | |
445 | } | |
446 | ||
38742209 TC |
447 | int |
448 | qat_checksum(uint64_t cksum, uint8_t *buf, uint64_t size, zio_cksum_t *zcp) | |
449 | { | |
450 | CpaStatus status; | |
451 | Cpa16U i; | |
452 | CpaInstanceHandle cy_inst_handle; | |
17dd8835 | 453 | Cpa16U nr_bufs = (size >> PAGE_SHIFT) + 2; |
38742209 TC |
454 | Cpa32U bytes_left = 0; |
455 | Cpa8S *data = NULL; | |
456 | CpaCySymSessionCtx *cy_session_ctx = NULL; | |
457 | cy_callback_t cb; | |
458 | Cpa8U digest_buffer[sizeof (zio_cksum_t)]; | |
459 | CpaCySymOpData op_data = { 0 }; | |
460 | CpaBufferList src_buffer_list = { 0 }; | |
461 | CpaFlatBuffer *flat_src_buf_array = NULL; | |
462 | CpaFlatBuffer *flat_src_buf = NULL; | |
463 | struct page *in_pages[MAX_PAGE_NUM]; | |
17dd8835 | 464 | Cpa32U page_num = 0; |
38742209 TC |
465 | Cpa32U page_off = 0; |
466 | ||
467 | QAT_STAT_BUMP(cksum_requests); | |
468 | QAT_STAT_INCR(cksum_total_in_bytes, size); | |
469 | ||
bc8a6a60 | 470 | i = (Cpa32U)atomic_inc_32_nv(&inst_num) % num_inst; |
38742209 TC |
471 | cy_inst_handle = cy_inst_handles[i]; |
472 | ||
473 | status = qat_init_checksum_session_ctx(cy_inst_handle, | |
474 | &cy_session_ctx, cksum); | |
475 | if (status != CPA_STATUS_SUCCESS) { | |
476 | /* don't count unsupported checksums as a failure */ | |
477 | if (cksum == ZIO_CHECKSUM_SHA256 || | |
478 | cksum == ZIO_CHECKSUM_SHA512) | |
479 | QAT_STAT_BUMP(cksum_fails); | |
480 | return (status); | |
481 | } | |
482 | ||
17dd8835 TC |
483 | /* |
484 | * We increment nr_bufs by 2 to allow us to handle non | |
485 | * page-aligned buffer addresses and buffers whose sizes | |
486 | * are not divisible by PAGE_SIZE. | |
487 | */ | |
38742209 TC |
488 | status = qat_init_cy_buffer_lists(cy_inst_handle, nr_bufs, |
489 | &src_buffer_list, &src_buffer_list); | |
490 | if (status != CPA_STATUS_SUCCESS) | |
491 | goto fail; | |
492 | ||
493 | status = QAT_PHYS_CONTIG_ALLOC(&flat_src_buf_array, | |
494 | nr_bufs * sizeof (CpaFlatBuffer)); | |
495 | if (status != CPA_STATUS_SUCCESS) | |
496 | goto fail; | |
497 | ||
498 | bytes_left = size; | |
499 | data = buf; | |
500 | flat_src_buf = flat_src_buf_array; | |
501 | while (bytes_left > 0) { | |
502 | page_off = ((long)data & ~PAGE_MASK); | |
503 | in_pages[page_num] = qat_mem_to_page(data); | |
504 | flat_src_buf->pData = kmap(in_pages[page_num]) + page_off; | |
505 | flat_src_buf->dataLenInBytes = | |
17dd8835 | 506 | min((long)PAGE_SIZE - page_off, (long)bytes_left); |
38742209 TC |
507 | data += flat_src_buf->dataLenInBytes; |
508 | bytes_left -= flat_src_buf->dataLenInBytes; | |
509 | flat_src_buf++; | |
510 | page_num++; | |
511 | } | |
512 | src_buffer_list.pBuffers = flat_src_buf_array; | |
17dd8835 | 513 | src_buffer_list.numBuffers = page_num; |
38742209 TC |
514 | |
515 | op_data.sessionCtx = cy_session_ctx; | |
516 | op_data.packetType = CPA_CY_SYM_PACKET_TYPE_FULL; | |
517 | op_data.hashStartSrcOffsetInBytes = 0; | |
518 | op_data.messageLenToHashInBytes = size; | |
519 | op_data.pDigestResult = digest_buffer; | |
520 | ||
521 | cb.verify_result = CPA_FALSE; | |
522 | init_completion(&cb.complete); | |
523 | status = cpaCySymPerformOp(cy_inst_handle, &cb, &op_data, | |
524 | &src_buffer_list, &src_buffer_list, NULL); | |
525 | if (status != CPA_STATUS_SUCCESS) | |
526 | goto fail; | |
527 | ||
528 | if (!wait_for_completion_interruptible_timeout(&cb.complete, | |
529 | QAT_TIMEOUT_MS)) { | |
530 | status = CPA_STATUS_FAIL; | |
531 | goto fail; | |
532 | } | |
533 | ||
534 | bcopy(digest_buffer, zcp, sizeof (zio_cksum_t)); | |
535 | ||
536 | fail: | |
537 | if (status != CPA_STATUS_SUCCESS) | |
538 | QAT_STAT_BUMP(cksum_fails); | |
539 | ||
540 | for (i = 0; i < page_num; i++) | |
541 | kunmap(in_pages[i]); | |
542 | ||
543 | cpaCySymRemoveSession(cy_inst_handle, cy_session_ctx); | |
544 | QAT_PHYS_CONTIG_FREE(src_buffer_list.pPrivateMetaData); | |
545 | QAT_PHYS_CONTIG_FREE(cy_session_ctx); | |
546 | QAT_PHYS_CONTIG_FREE(flat_src_buf_array); | |
547 | ||
548 | return (status); | |
549 | } | |
550 | ||
551 | module_param(zfs_qat_encrypt_disable, int, 0644); | |
552 | MODULE_PARM_DESC(zfs_qat_encrypt_disable, "Disable QAT encryption"); | |
553 | ||
554 | module_param(zfs_qat_checksum_disable, int, 0644); | |
555 | MODULE_PARM_DESC(zfs_qat_checksum_disable, "Disable QAT checksumming"); | |
cf637391 TC |
556 | |
557 | #endif |