1 // SPDX-License-Identifier: CDDL-1.0
2 /*
3 * CDDL HEADER START
4 *
5 * The contents of this file are subject to the terms of the
6 * Common Development and Distribution License (the "License").
7 * You may not use this file except in compliance with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or https://opensource.org/licenses/CDDL-1.0.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22
23 /*
24 * This file represents the QAT implementation of checksums and encryption.
25 * Internally, QAT shares the same cryptographic instances for both of these
26 * operations, so the code has been combined here. QAT data compression uses
27 * compression instances, so that code is separated into qat_compress.c
28 */
29
30 #if defined(_KERNEL) && defined(HAVE_QAT)
31 #include <linux/slab.h>
32 #include <linux/vmalloc.h>
33 #include <linux/pagemap.h>
34 #include <linux/completion.h>
35 #include <sys/zfs_context.h>
36 #include <sys/zio_crypt.h>
37 #include "lac/cpa_cy_im.h"
38 #include "lac/cpa_cy_common.h"
39 #include <sys/qat.h>
40
41 /*
42 * Max instances in a QAT device, each instance is a channel to submit
43 * jobs to QAT hardware, this is only for pre-allocating instances
44 * and session arrays; the actual number of instances are defined in
45 * the QAT driver's configure file.
46 */
47 #define QAT_CRYPT_MAX_INSTANCES 48
48
49 #define MAX_PAGE_NUM 1024
50
51 static Cpa32U inst_num = 0;
52 static Cpa16U num_inst = 0;
53 static CpaInstanceHandle cy_inst_handles[QAT_CRYPT_MAX_INSTANCES];
54 static boolean_t qat_cy_init_done = B_FALSE;
55 int zfs_qat_encrypt_disable = 0;
56 int zfs_qat_checksum_disable = 0;
57
58 typedef struct cy_callback {
59 CpaBoolean verify_result;
60 struct completion complete;
61 } cy_callback_t;
62
63 static void
symcallback(void * p_callback,CpaStatus status,const CpaCySymOp operation,void * op_data,CpaBufferList * buf_list_dst,CpaBoolean verify)64 symcallback(void *p_callback, CpaStatus status, const CpaCySymOp operation,
65 void *op_data, CpaBufferList *buf_list_dst, CpaBoolean verify)
66 {
67 cy_callback_t *cb = p_callback;
68
69 if (cb != NULL) {
70 /* indicate that the function has been called */
71 cb->verify_result = verify;
72 complete(&cb->complete);
73 }
74 }
75
76 boolean_t
qat_crypt_use_accel(size_t s_len)77 qat_crypt_use_accel(size_t s_len)
78 {
79 return (!zfs_qat_encrypt_disable &&
80 qat_cy_init_done &&
81 s_len >= QAT_MIN_BUF_SIZE &&
82 s_len <= QAT_MAX_BUF_SIZE);
83 }
84
85 boolean_t
qat_checksum_use_accel(size_t s_len)86 qat_checksum_use_accel(size_t s_len)
87 {
88 return (!zfs_qat_checksum_disable &&
89 qat_cy_init_done &&
90 s_len >= QAT_MIN_BUF_SIZE &&
91 s_len <= QAT_MAX_BUF_SIZE);
92 }
93
94 void
qat_cy_clean(void)95 qat_cy_clean(void)
96 {
97 for (Cpa16U i = 0; i < num_inst; i++)
98 cpaCyStopInstance(cy_inst_handles[i]);
99
100 num_inst = 0;
101 qat_cy_init_done = B_FALSE;
102 }
103
104 int
qat_cy_init(void)105 qat_cy_init(void)
106 {
107 CpaStatus status = CPA_STATUS_FAIL;
108
109 if (qat_cy_init_done)
110 return (0);
111
112 status = cpaCyGetNumInstances(&num_inst);
113 if (status != CPA_STATUS_SUCCESS)
114 return (-1);
115
116 /* if the user has configured no QAT encryption units just return */
117 if (num_inst == 0)
118 return (0);
119
120 if (num_inst > QAT_CRYPT_MAX_INSTANCES)
121 num_inst = QAT_CRYPT_MAX_INSTANCES;
122
123 status = cpaCyGetInstances(num_inst, &cy_inst_handles[0]);
124 if (status != CPA_STATUS_SUCCESS)
125 return (-1);
126
127 for (Cpa16U i = 0; i < num_inst; i++) {
128 status = cpaCySetAddressTranslation(cy_inst_handles[i],
129 (void *)virt_to_phys);
130 if (status != CPA_STATUS_SUCCESS)
131 goto error;
132
133 status = cpaCyStartInstance(cy_inst_handles[i]);
134 if (status != CPA_STATUS_SUCCESS)
135 goto error;
136 }
137
138 qat_cy_init_done = B_TRUE;
139 return (0);
140
141 error:
142 qat_cy_clean();
143 return (-1);
144 }
145
146 void
qat_cy_fini(void)147 qat_cy_fini(void)
148 {
149 if (!qat_cy_init_done)
150 return;
151
152 qat_cy_clean();
153 }
154
155 static CpaStatus
qat_init_crypt_session_ctx(qat_encrypt_dir_t dir,CpaInstanceHandle inst_handle,CpaCySymSessionCtx ** cy_session_ctx,crypto_key_t * key,Cpa64U crypt,Cpa32U aad_len)156 qat_init_crypt_session_ctx(qat_encrypt_dir_t dir, CpaInstanceHandle inst_handle,
157 CpaCySymSessionCtx **cy_session_ctx, crypto_key_t *key,
158 Cpa64U crypt, Cpa32U aad_len)
159 {
160 CpaStatus status = CPA_STATUS_SUCCESS;
161 Cpa32U ctx_size;
162 Cpa32U ciper_algorithm;
163 Cpa32U hash_algorithm;
164 CpaCySymSessionSetupData sd = { 0 };
165
166 if (zio_crypt_table[crypt].ci_crypt_type == ZC_TYPE_CCM) {
167 return (CPA_STATUS_FAIL);
168 } else {
169 ciper_algorithm = CPA_CY_SYM_CIPHER_AES_GCM;
170 hash_algorithm = CPA_CY_SYM_HASH_AES_GCM;
171 }
172
173 sd.cipherSetupData.cipherAlgorithm = ciper_algorithm;
174 sd.cipherSetupData.pCipherKey = key->ck_data;
175 sd.cipherSetupData.cipherKeyLenInBytes = key->ck_length / 8;
176 sd.hashSetupData.hashAlgorithm = hash_algorithm;
177 sd.hashSetupData.hashMode = CPA_CY_SYM_HASH_MODE_AUTH;
178 sd.hashSetupData.digestResultLenInBytes = ZIO_DATA_MAC_LEN;
179 sd.hashSetupData.authModeSetupData.aadLenInBytes = aad_len;
180 sd.sessionPriority = CPA_CY_PRIORITY_NORMAL;
181 sd.symOperation = CPA_CY_SYM_OP_ALGORITHM_CHAINING;
182 sd.digestIsAppended = CPA_FALSE;
183 sd.verifyDigest = CPA_FALSE;
184
185 if (dir == QAT_ENCRYPT) {
186 sd.cipherSetupData.cipherDirection =
187 CPA_CY_SYM_CIPHER_DIRECTION_ENCRYPT;
188 sd.algChainOrder =
189 CPA_CY_SYM_ALG_CHAIN_ORDER_HASH_THEN_CIPHER;
190 } else {
191 ASSERT3U(dir, ==, QAT_DECRYPT);
192 sd.cipherSetupData.cipherDirection =
193 CPA_CY_SYM_CIPHER_DIRECTION_DECRYPT;
194 sd.algChainOrder =
195 CPA_CY_SYM_ALG_CHAIN_ORDER_CIPHER_THEN_HASH;
196 }
197
198 status = cpaCySymSessionCtxGetSize(inst_handle, &sd, &ctx_size);
199 if (status != CPA_STATUS_SUCCESS)
200 return (status);
201
202 status = QAT_PHYS_CONTIG_ALLOC(cy_session_ctx, ctx_size);
203 if (status != CPA_STATUS_SUCCESS)
204 return (status);
205
206 status = cpaCySymInitSession(inst_handle, symcallback, &sd,
207 *cy_session_ctx);
208 if (status != CPA_STATUS_SUCCESS) {
209 QAT_PHYS_CONTIG_FREE(*cy_session_ctx);
210 return (status);
211 }
212
213 return (CPA_STATUS_SUCCESS);
214 }
215
216 static CpaStatus
qat_init_checksum_session_ctx(CpaInstanceHandle inst_handle,CpaCySymSessionCtx ** cy_session_ctx,Cpa64U cksum)217 qat_init_checksum_session_ctx(CpaInstanceHandle inst_handle,
218 CpaCySymSessionCtx **cy_session_ctx, Cpa64U cksum)
219 {
220 CpaStatus status = CPA_STATUS_SUCCESS;
221 Cpa32U ctx_size;
222 Cpa32U hash_algorithm;
223 CpaCySymSessionSetupData sd = { 0 };
224
225 /*
226 * ZFS's SHA512 checksum is actually SHA512/256, which uses
227 * a different IV from standard SHA512. QAT does not support
228 * SHA512/256, so we can only support SHA256.
229 */
230 if (cksum == ZIO_CHECKSUM_SHA256)
231 hash_algorithm = CPA_CY_SYM_HASH_SHA256;
232 else
233 return (CPA_STATUS_FAIL);
234
235 sd.sessionPriority = CPA_CY_PRIORITY_NORMAL;
236 sd.symOperation = CPA_CY_SYM_OP_HASH;
237 sd.hashSetupData.hashAlgorithm = hash_algorithm;
238 sd.hashSetupData.hashMode = CPA_CY_SYM_HASH_MODE_PLAIN;
239 sd.hashSetupData.digestResultLenInBytes = sizeof (zio_cksum_t);
240 sd.digestIsAppended = CPA_FALSE;
241 sd.verifyDigest = CPA_FALSE;
242
243 status = cpaCySymSessionCtxGetSize(inst_handle, &sd, &ctx_size);
244 if (status != CPA_STATUS_SUCCESS)
245 return (status);
246
247 status = QAT_PHYS_CONTIG_ALLOC(cy_session_ctx, ctx_size);
248 if (status != CPA_STATUS_SUCCESS)
249 return (status);
250
251 status = cpaCySymInitSession(inst_handle, symcallback, &sd,
252 *cy_session_ctx);
253 if (status != CPA_STATUS_SUCCESS) {
254 QAT_PHYS_CONTIG_FREE(*cy_session_ctx);
255 return (status);
256 }
257
258 return (CPA_STATUS_SUCCESS);
259 }
260
261 static CpaStatus
qat_init_cy_buffer_lists(CpaInstanceHandle inst_handle,uint32_t nr_bufs,CpaBufferList * src,CpaBufferList * dst)262 qat_init_cy_buffer_lists(CpaInstanceHandle inst_handle, uint32_t nr_bufs,
263 CpaBufferList *src, CpaBufferList *dst)
264 {
265 CpaStatus status = CPA_STATUS_SUCCESS;
266 Cpa32U meta_size = 0;
267
268 status = cpaCyBufferListGetMetaSize(inst_handle, nr_bufs, &meta_size);
269 if (status != CPA_STATUS_SUCCESS)
270 return (status);
271
272 status = QAT_PHYS_CONTIG_ALLOC(&src->pPrivateMetaData, meta_size);
273 if (status != CPA_STATUS_SUCCESS)
274 goto error;
275
276 if (src != dst) {
277 status = QAT_PHYS_CONTIG_ALLOC(&dst->pPrivateMetaData,
278 meta_size);
279 if (status != CPA_STATUS_SUCCESS)
280 goto error;
281 }
282
283 return (CPA_STATUS_SUCCESS);
284
285 error:
286 QAT_PHYS_CONTIG_FREE(src->pPrivateMetaData);
287 if (src != dst)
288 QAT_PHYS_CONTIG_FREE(dst->pPrivateMetaData);
289
290 return (status);
291 }
292
293 int
qat_crypt(qat_encrypt_dir_t dir,uint8_t * src_buf,uint8_t * dst_buf,uint8_t * aad_buf,uint32_t aad_len,uint8_t * iv_buf,uint8_t * digest_buf,crypto_key_t * key,uint64_t crypt,uint32_t enc_len)294 qat_crypt(qat_encrypt_dir_t dir, uint8_t *src_buf, uint8_t *dst_buf,
295 uint8_t *aad_buf, uint32_t aad_len, uint8_t *iv_buf, uint8_t *digest_buf,
296 crypto_key_t *key, uint64_t crypt, uint32_t enc_len)
297 {
298 CpaStatus status = CPA_STATUS_SUCCESS;
299 Cpa16U i;
300 CpaInstanceHandle cy_inst_handle;
301 Cpa16U nr_bufs = (enc_len >> PAGE_SHIFT) + 2;
302 Cpa32U bytes_left = 0;
303 Cpa8S *data = NULL;
304 CpaCySymSessionCtx *cy_session_ctx = NULL;
305 cy_callback_t cb;
306 CpaCySymOpData op_data = { 0 };
307 CpaBufferList src_buffer_list = { 0 };
308 CpaBufferList dst_buffer_list = { 0 };
309 CpaFlatBuffer *flat_src_buf_array = NULL;
310 CpaFlatBuffer *flat_src_buf = NULL;
311 CpaFlatBuffer *flat_dst_buf_array = NULL;
312 CpaFlatBuffer *flat_dst_buf = NULL;
313 struct page *in_pages[MAX_PAGE_NUM];
314 struct page *out_pages[MAX_PAGE_NUM];
315 Cpa32U in_page_num = 0;
316 Cpa32U out_page_num = 0;
317 Cpa32U in_page_off = 0;
318 Cpa32U out_page_off = 0;
319
320 if (dir == QAT_ENCRYPT) {
321 QAT_STAT_BUMP(encrypt_requests);
322 QAT_STAT_INCR(encrypt_total_in_bytes, enc_len);
323 } else {
324 QAT_STAT_BUMP(decrypt_requests);
325 QAT_STAT_INCR(decrypt_total_in_bytes, enc_len);
326 }
327
328 i = (Cpa32U)atomic_inc_32_nv(&inst_num) % num_inst;
329 cy_inst_handle = cy_inst_handles[i];
330
331 status = qat_init_crypt_session_ctx(dir, cy_inst_handle,
332 &cy_session_ctx, key, crypt, aad_len);
333 if (status != CPA_STATUS_SUCCESS) {
334 /* don't count CCM as a failure since it's not supported */
335 if (zio_crypt_table[crypt].ci_crypt_type == ZC_TYPE_GCM)
336 QAT_STAT_BUMP(crypt_fails);
337 return (status);
338 }
339
340 /*
341 * We increment nr_bufs by 2 to allow us to handle non
342 * page-aligned buffer addresses and buffers whose sizes
343 * are not divisible by PAGE_SIZE.
344 */
345 status = qat_init_cy_buffer_lists(cy_inst_handle, nr_bufs,
346 &src_buffer_list, &dst_buffer_list);
347 if (status != CPA_STATUS_SUCCESS)
348 goto fail;
349
350 status = QAT_PHYS_CONTIG_ALLOC(&flat_src_buf_array,
351 nr_bufs * sizeof (CpaFlatBuffer));
352 if (status != CPA_STATUS_SUCCESS)
353 goto fail;
354 status = QAT_PHYS_CONTIG_ALLOC(&flat_dst_buf_array,
355 nr_bufs * sizeof (CpaFlatBuffer));
356 if (status != CPA_STATUS_SUCCESS)
357 goto fail;
358 status = QAT_PHYS_CONTIG_ALLOC(&op_data.pDigestResult,
359 ZIO_DATA_MAC_LEN);
360 if (status != CPA_STATUS_SUCCESS)
361 goto fail;
362 status = QAT_PHYS_CONTIG_ALLOC(&op_data.pIv,
363 ZIO_DATA_IV_LEN);
364 if (status != CPA_STATUS_SUCCESS)
365 goto fail;
366 if (aad_len > 0) {
367 status = QAT_PHYS_CONTIG_ALLOC(&op_data.pAdditionalAuthData,
368 aad_len);
369 if (status != CPA_STATUS_SUCCESS)
370 goto fail;
371 memcpy(op_data.pAdditionalAuthData, aad_buf, aad_len);
372 }
373
374 bytes_left = enc_len;
375 data = src_buf;
376 flat_src_buf = flat_src_buf_array;
377 while (bytes_left > 0) {
378 in_page_off = ((long)data & ~PAGE_MASK);
379 in_pages[in_page_num] = qat_mem_to_page(data);
380 flat_src_buf->pData = kmap(in_pages[in_page_num]) + in_page_off;
381 flat_src_buf->dataLenInBytes =
382 min((long)PAGE_SIZE - in_page_off, (long)bytes_left);
383 data += flat_src_buf->dataLenInBytes;
384 bytes_left -= flat_src_buf->dataLenInBytes;
385 flat_src_buf++;
386 in_page_num++;
387 }
388 src_buffer_list.pBuffers = flat_src_buf_array;
389 src_buffer_list.numBuffers = in_page_num;
390
391 bytes_left = enc_len;
392 data = dst_buf;
393 flat_dst_buf = flat_dst_buf_array;
394 while (bytes_left > 0) {
395 out_page_off = ((long)data & ~PAGE_MASK);
396 out_pages[out_page_num] = qat_mem_to_page(data);
397 flat_dst_buf->pData = kmap(out_pages[out_page_num]) +
398 out_page_off;
399 flat_dst_buf->dataLenInBytes =
400 min((long)PAGE_SIZE - out_page_off, (long)bytes_left);
401 data += flat_dst_buf->dataLenInBytes;
402 bytes_left -= flat_dst_buf->dataLenInBytes;
403 flat_dst_buf++;
404 out_page_num++;
405 }
406 dst_buffer_list.pBuffers = flat_dst_buf_array;
407 dst_buffer_list.numBuffers = out_page_num;
408
409 op_data.sessionCtx = cy_session_ctx;
410 op_data.packetType = CPA_CY_SYM_PACKET_TYPE_FULL;
411 op_data.cryptoStartSrcOffsetInBytes = 0;
412 op_data.messageLenToCipherInBytes = 0;
413 op_data.hashStartSrcOffsetInBytes = 0;
414 op_data.messageLenToHashInBytes = 0;
415 op_data.messageLenToCipherInBytes = enc_len;
416 op_data.ivLenInBytes = ZIO_DATA_IV_LEN;
417 memcpy(op_data.pIv, iv_buf, ZIO_DATA_IV_LEN);
418 /* if dir is QAT_DECRYPT, copy digest_buf to pDigestResult */
419 if (dir == QAT_DECRYPT)
420 memcpy(op_data.pDigestResult, digest_buf, ZIO_DATA_MAC_LEN);
421
422 cb.verify_result = CPA_FALSE;
423 init_completion(&cb.complete);
424 status = cpaCySymPerformOp(cy_inst_handle, &cb, &op_data,
425 &src_buffer_list, &dst_buffer_list, NULL);
426 if (status != CPA_STATUS_SUCCESS)
427 goto fail;
428
429 /* we now wait until the completion of the operation. */
430 wait_for_completion(&cb.complete);
431
432 if (cb.verify_result == CPA_FALSE) {
433 status = CPA_STATUS_FAIL;
434 goto fail;
435 }
436
437 if (dir == QAT_ENCRYPT) {
438 /* if dir is QAT_ENCRYPT, save pDigestResult to digest_buf */
439 memcpy(digest_buf, op_data.pDigestResult, ZIO_DATA_MAC_LEN);
440 QAT_STAT_INCR(encrypt_total_out_bytes, enc_len);
441 } else {
442 QAT_STAT_INCR(decrypt_total_out_bytes, enc_len);
443 }
444
445 fail:
446 if (status != CPA_STATUS_SUCCESS)
447 QAT_STAT_BUMP(crypt_fails);
448
449 for (i = 0; i < in_page_num; i++)
450 kunmap(in_pages[i]);
451 for (i = 0; i < out_page_num; i++)
452 kunmap(out_pages[i]);
453
454 cpaCySymRemoveSession(cy_inst_handle, cy_session_ctx);
455 if (aad_len > 0)
456 QAT_PHYS_CONTIG_FREE(op_data.pAdditionalAuthData);
457 QAT_PHYS_CONTIG_FREE(op_data.pIv);
458 QAT_PHYS_CONTIG_FREE(op_data.pDigestResult);
459 QAT_PHYS_CONTIG_FREE(src_buffer_list.pPrivateMetaData);
460 QAT_PHYS_CONTIG_FREE(dst_buffer_list.pPrivateMetaData);
461 QAT_PHYS_CONTIG_FREE(cy_session_ctx);
462 QAT_PHYS_CONTIG_FREE(flat_src_buf_array);
463 QAT_PHYS_CONTIG_FREE(flat_dst_buf_array);
464
465 return (status);
466 }
467
468 int
qat_checksum(uint64_t cksum,uint8_t * buf,uint64_t size,zio_cksum_t * zcp)469 qat_checksum(uint64_t cksum, uint8_t *buf, uint64_t size, zio_cksum_t *zcp)
470 {
471 CpaStatus status;
472 Cpa16U i;
473 CpaInstanceHandle cy_inst_handle;
474 Cpa16U nr_bufs = (size >> PAGE_SHIFT) + 2;
475 Cpa32U bytes_left = 0;
476 Cpa8S *data = NULL;
477 CpaCySymSessionCtx *cy_session_ctx = NULL;
478 cy_callback_t cb;
479 Cpa8U *digest_buffer = NULL;
480 CpaCySymOpData op_data = { 0 };
481 CpaBufferList src_buffer_list = { 0 };
482 CpaFlatBuffer *flat_src_buf_array = NULL;
483 CpaFlatBuffer *flat_src_buf = NULL;
484 struct page *in_pages[MAX_PAGE_NUM];
485 Cpa32U page_num = 0;
486 Cpa32U page_off = 0;
487
488 QAT_STAT_BUMP(cksum_requests);
489 QAT_STAT_INCR(cksum_total_in_bytes, size);
490
491 i = (Cpa32U)atomic_inc_32_nv(&inst_num) % num_inst;
492 cy_inst_handle = cy_inst_handles[i];
493
494 status = qat_init_checksum_session_ctx(cy_inst_handle,
495 &cy_session_ctx, cksum);
496 if (status != CPA_STATUS_SUCCESS) {
497 /* don't count unsupported checksums as a failure */
498 if (cksum == ZIO_CHECKSUM_SHA256 ||
499 cksum == ZIO_CHECKSUM_SHA512)
500 QAT_STAT_BUMP(cksum_fails);
501 return (status);
502 }
503
504 /*
505 * We increment nr_bufs by 2 to allow us to handle non
506 * page-aligned buffer addresses and buffers whose sizes
507 * are not divisible by PAGE_SIZE.
508 */
509 status = qat_init_cy_buffer_lists(cy_inst_handle, nr_bufs,
510 &src_buffer_list, &src_buffer_list);
511 if (status != CPA_STATUS_SUCCESS)
512 goto fail;
513
514 status = QAT_PHYS_CONTIG_ALLOC(&flat_src_buf_array,
515 nr_bufs * sizeof (CpaFlatBuffer));
516 if (status != CPA_STATUS_SUCCESS)
517 goto fail;
518 status = QAT_PHYS_CONTIG_ALLOC(&digest_buffer,
519 sizeof (zio_cksum_t));
520 if (status != CPA_STATUS_SUCCESS)
521 goto fail;
522
523 bytes_left = size;
524 data = buf;
525 flat_src_buf = flat_src_buf_array;
526 while (bytes_left > 0) {
527 page_off = ((long)data & ~PAGE_MASK);
528 in_pages[page_num] = qat_mem_to_page(data);
529 flat_src_buf->pData = kmap(in_pages[page_num]) + page_off;
530 flat_src_buf->dataLenInBytes =
531 min((long)PAGE_SIZE - page_off, (long)bytes_left);
532 data += flat_src_buf->dataLenInBytes;
533 bytes_left -= flat_src_buf->dataLenInBytes;
534 flat_src_buf++;
535 page_num++;
536 }
537 src_buffer_list.pBuffers = flat_src_buf_array;
538 src_buffer_list.numBuffers = page_num;
539
540 op_data.sessionCtx = cy_session_ctx;
541 op_data.packetType = CPA_CY_SYM_PACKET_TYPE_FULL;
542 op_data.hashStartSrcOffsetInBytes = 0;
543 op_data.messageLenToHashInBytes = size;
544 op_data.pDigestResult = digest_buffer;
545
546 cb.verify_result = CPA_FALSE;
547 init_completion(&cb.complete);
548 status = cpaCySymPerformOp(cy_inst_handle, &cb, &op_data,
549 &src_buffer_list, &src_buffer_list, NULL);
550 if (status != CPA_STATUS_SUCCESS)
551 goto fail;
552
553 /* we now wait until the completion of the operation. */
554 wait_for_completion(&cb.complete);
555
556 if (cb.verify_result == CPA_FALSE) {
557 status = CPA_STATUS_FAIL;
558 goto fail;
559 }
560
561 memcpy(zcp, digest_buffer, sizeof (zio_cksum_t));
562
563 fail:
564 if (status != CPA_STATUS_SUCCESS)
565 QAT_STAT_BUMP(cksum_fails);
566
567 for (i = 0; i < page_num; i++)
568 kunmap(in_pages[i]);
569
570 cpaCySymRemoveSession(cy_inst_handle, cy_session_ctx);
571 QAT_PHYS_CONTIG_FREE(digest_buffer);
572 QAT_PHYS_CONTIG_FREE(src_buffer_list.pPrivateMetaData);
573 QAT_PHYS_CONTIG_FREE(cy_session_ctx);
574 QAT_PHYS_CONTIG_FREE(flat_src_buf_array);
575
576 return (status);
577 }
578
579 static int
param_set_qat_encrypt(const char * val,zfs_kernel_param_t * kp)580 param_set_qat_encrypt(const char *val, zfs_kernel_param_t *kp)
581 {
582 int ret;
583 int *pvalue = kp->arg;
584 ret = param_set_int(val, kp);
585 if (ret)
586 return (ret);
587 /*
588 * zfs_qat_encrypt_disable = 0: enable qat encrypt
589 * try to initialize qat instance if it has not been done
590 */
591 if (*pvalue == 0 && !qat_cy_init_done) {
592 ret = qat_cy_init();
593 if (ret != 0) {
594 zfs_qat_encrypt_disable = 1;
595 return (ret);
596 }
597 }
598 return (ret);
599 }
600
601 static int
param_set_qat_checksum(const char * val,zfs_kernel_param_t * kp)602 param_set_qat_checksum(const char *val, zfs_kernel_param_t *kp)
603 {
604 int ret;
605 int *pvalue = kp->arg;
606 ret = param_set_int(val, kp);
607 if (ret)
608 return (ret);
609 /*
610 * set_checksum_param_ops = 0: enable qat checksum
611 * try to initialize qat instance if it has not been done
612 */
613 if (*pvalue == 0 && !qat_cy_init_done) {
614 ret = qat_cy_init();
615 if (ret != 0) {
616 zfs_qat_checksum_disable = 1;
617 return (ret);
618 }
619 }
620 return (ret);
621 }
622
623 module_param_call(zfs_qat_encrypt_disable, param_set_qat_encrypt,
624 param_get_int, &zfs_qat_encrypt_disable, 0644);
625 MODULE_PARM_DESC(zfs_qat_encrypt_disable, "Enable/Disable QAT encryption");
626
627 module_param_call(zfs_qat_checksum_disable, param_set_qat_checksum,
628 param_get_int, &zfs_qat_checksum_disable, 0644);
629 MODULE_PARM_DESC(zfs_qat_checksum_disable, "Enable/Disable QAT checksumming");
630
631 #endif
632