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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> | |
5090f727 | 34 | #include <linux/mod_compat.h> |
cf637391 TC |
35 | #include <sys/zfs_context.h> |
36 | #include <sys/zio_crypt.h> | |
37 | #include "lac/cpa_cy_im.h" | |
38742209 | 38 | #include "lac/cpa_cy_common.h" |
cf637391 TC |
39 | #include "qat.h" |
40 | ||
41 | /* | |
8d9e7c8f TC |
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 | |
cf637391 TC |
45 | * the QAT driver's configure file. |
46 | */ | |
47 | #define QAT_CRYPT_MAX_INSTANCES 48 | |
48 | ||
49 | #define MAX_PAGE_NUM 1024 | |
50 | ||
bc8a6a60 | 51 | static Cpa32U inst_num = 0; |
cf637391 TC |
52 | static Cpa16U num_inst = 0; |
53 | static CpaInstanceHandle cy_inst_handles[QAT_CRYPT_MAX_INSTANCES]; | |
5090f727 | 54 | static boolean_t qat_cy_init_done = B_FALSE; |
38742209 TC |
55 | int zfs_qat_encrypt_disable = 0; |
56 | int zfs_qat_checksum_disable = 0; | |
cf637391 TC |
57 | |
58 | typedef struct cy_callback { | |
59 | CpaBoolean verify_result; | |
60 | struct completion complete; | |
61 | } cy_callback_t; | |
62 | ||
63 | static void | |
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 | |
77 | qat_crypt_use_accel(size_t s_len) | |
78 | { | |
38742209 | 79 | return (!zfs_qat_encrypt_disable && |
5090f727 | 80 | qat_cy_init_done && |
38742209 TC |
81 | s_len >= QAT_MIN_BUF_SIZE && |
82 | s_len <= QAT_MAX_BUF_SIZE); | |
83 | } | |
84 | ||
85 | boolean_t | |
86 | qat_checksum_use_accel(size_t s_len) | |
87 | { | |
88 | return (!zfs_qat_checksum_disable && | |
5090f727 | 89 | qat_cy_init_done && |
cf637391 TC |
90 | s_len >= QAT_MIN_BUF_SIZE && |
91 | s_len <= QAT_MAX_BUF_SIZE); | |
92 | } | |
93 | ||
94 | void | |
5090f727 | 95 | qat_cy_clean(void) |
cf637391 | 96 | { |
bc8a6a60 | 97 | for (Cpa16U i = 0; i < num_inst; i++) |
cf637391 TC |
98 | cpaCyStopInstance(cy_inst_handles[i]); |
99 | ||
100 | num_inst = 0; | |
5090f727 | 101 | qat_cy_init_done = B_FALSE; |
cf637391 TC |
102 | } |
103 | ||
104 | int | |
5090f727 | 105 | qat_cy_init(void) |
cf637391 | 106 | { |
cf637391 TC |
107 | CpaStatus status = CPA_STATUS_FAIL; |
108 | ||
5090f727 CZ |
109 | if (qat_cy_init_done) |
110 | return (0); | |
111 | ||
cf637391 TC |
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 | ||
bc8a6a60 | 127 | for (Cpa16U i = 0; i < num_inst; i++) { |
cf637391 TC |
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 | ||
5090f727 | 138 | qat_cy_init_done = B_TRUE; |
cf637391 TC |
139 | return (0); |
140 | ||
141 | error: | |
5090f727 | 142 | qat_cy_clean(); |
cf637391 TC |
143 | return (-1); |
144 | } | |
145 | ||
146 | void | |
5090f727 | 147 | qat_cy_fini(void) |
cf637391 | 148 | { |
5090f727 | 149 | if (!qat_cy_init_done) |
cf637391 TC |
150 | return; |
151 | ||
5090f727 | 152 | qat_cy_clean(); |
cf637391 TC |
153 | } |
154 | ||
155 | static CpaStatus | |
38742209 | 156 | qat_init_crypt_session_ctx(qat_encrypt_dir_t dir, CpaInstanceHandle inst_handle, |
cf637391 TC |
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 | |
38742209 TC |
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 | |
262 | qat_init_cy_buffer_lists(CpaInstanceHandle inst_handle, uint32_t nr_bufs, | |
cf637391 TC |
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 | ||
cf637391 TC |
272 | status = QAT_PHYS_CONTIG_ALLOC(&src->pPrivateMetaData, meta_size); |
273 | if (status != CPA_STATUS_SUCCESS) | |
274 | goto error; | |
275 | ||
276 | if (src != dst) { | |
cf637391 TC |
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 | |
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; | |
17dd8835 | 301 | Cpa16U nr_bufs = (enc_len >> PAGE_SHIFT) + 2; |
cf637391 | 302 | Cpa32U bytes_left = 0; |
17dd8835 | 303 | Cpa8S *data = NULL; |
cf637391 TC |
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]; | |
17dd8835 TC |
315 | Cpa32U in_page_num = 0; |
316 | Cpa32U out_page_num = 0; | |
38742209 TC |
317 | Cpa32U in_page_off = 0; |
318 | Cpa32U out_page_off = 0; | |
cf637391 TC |
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 | ||
bc8a6a60 | 328 | i = (Cpa32U)atomic_inc_32_nv(&inst_num) % num_inst; |
cf637391 TC |
329 | cy_inst_handle = cy_inst_handles[i]; |
330 | ||
38742209 TC |
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); | |
cf637391 | 337 | return (status); |
38742209 | 338 | } |
cf637391 | 339 | |
17dd8835 TC |
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 | */ | |
38742209 TC |
345 | status = qat_init_cy_buffer_lists(cy_inst_handle, nr_bufs, |
346 | &src_buffer_list, &dst_buffer_list); | |
cf637391 TC |
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; | |
5090f727 CZ |
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 | bcopy(aad_buf, op_data.pAdditionalAuthData, aad_len); | |
372 | } | |
cf637391 TC |
373 | |
374 | bytes_left = enc_len; | |
17dd8835 | 375 | data = src_buf; |
cf637391 | 376 | flat_src_buf = flat_src_buf_array; |
cf637391 | 377 | while (bytes_left > 0) { |
17dd8835 TC |
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; | |
38742209 | 381 | flat_src_buf->dataLenInBytes = |
17dd8835 TC |
382 | min((long)PAGE_SIZE - in_page_off, (long)bytes_left); |
383 | data += flat_src_buf->dataLenInBytes; | |
cf637391 TC |
384 | bytes_left -= flat_src_buf->dataLenInBytes; |
385 | flat_src_buf++; | |
17dd8835 | 386 | in_page_num++; |
cf637391 TC |
387 | } |
388 | src_buffer_list.pBuffers = flat_src_buf_array; | |
17dd8835 TC |
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 | } | |
cf637391 | 406 | dst_buffer_list.pBuffers = flat_dst_buf_array; |
17dd8835 | 407 | dst_buffer_list.numBuffers = out_page_num; |
cf637391 TC |
408 | |
409 | op_data.sessionCtx = cy_session_ctx; | |
410 | op_data.packetType = CPA_CY_SYM_PACKET_TYPE_FULL; | |
cf637391 TC |
411 | op_data.cryptoStartSrcOffsetInBytes = 0; |
412 | op_data.messageLenToCipherInBytes = 0; | |
413 | op_data.hashStartSrcOffsetInBytes = 0; | |
414 | op_data.messageLenToHashInBytes = 0; | |
cf637391 TC |
415 | op_data.messageLenToCipherInBytes = enc_len; |
416 | op_data.ivLenInBytes = ZIO_DATA_IV_LEN; | |
5090f727 | 417 | bcopy(iv_buf, op_data.pIv, ZIO_DATA_IV_LEN); |
cf637391 TC |
418 | |
419 | cb.verify_result = CPA_FALSE; | |
420 | init_completion(&cb.complete); | |
421 | status = cpaCySymPerformOp(cy_inst_handle, &cb, &op_data, | |
422 | &src_buffer_list, &dst_buffer_list, NULL); | |
423 | if (status != CPA_STATUS_SUCCESS) | |
424 | goto fail; | |
425 | ||
426 | if (!wait_for_completion_interruptible_timeout(&cb.complete, | |
427 | QAT_TIMEOUT_MS)) { | |
428 | status = CPA_STATUS_FAIL; | |
429 | goto fail; | |
430 | } | |
431 | ||
432 | if (cb.verify_result == CPA_FALSE) { | |
433 | status = CPA_STATUS_FAIL; | |
434 | goto fail; | |
435 | } | |
436 | ||
5090f727 CZ |
437 | /* save digest result to digest_buf */ |
438 | bcopy(op_data.pDigestResult, digest_buf, ZIO_DATA_MAC_LEN); | |
cf637391 TC |
439 | if (dir == QAT_ENCRYPT) |
440 | QAT_STAT_INCR(encrypt_total_out_bytes, enc_len); | |
441 | else | |
442 | QAT_STAT_INCR(decrypt_total_out_bytes, enc_len); | |
443 | ||
444 | fail: | |
38742209 | 445 | if (status != CPA_STATUS_SUCCESS) |
cf637391 TC |
446 | QAT_STAT_BUMP(crypt_fails); |
447 | ||
17dd8835 | 448 | for (i = 0; i < in_page_num; i++) |
cf637391 | 449 | kunmap(in_pages[i]); |
17dd8835 | 450 | for (i = 0; i < out_page_num; i++) |
cf637391 | 451 | kunmap(out_pages[i]); |
cf637391 TC |
452 | |
453 | cpaCySymRemoveSession(cy_inst_handle, cy_session_ctx); | |
5090f727 CZ |
454 | if (aad_len > 0) |
455 | QAT_PHYS_CONTIG_FREE(op_data.pAdditionalAuthData); | |
456 | QAT_PHYS_CONTIG_FREE(op_data.pIv); | |
457 | QAT_PHYS_CONTIG_FREE(op_data.pDigestResult); | |
cf637391 TC |
458 | QAT_PHYS_CONTIG_FREE(src_buffer_list.pPrivateMetaData); |
459 | QAT_PHYS_CONTIG_FREE(dst_buffer_list.pPrivateMetaData); | |
460 | QAT_PHYS_CONTIG_FREE(cy_session_ctx); | |
461 | QAT_PHYS_CONTIG_FREE(flat_src_buf_array); | |
462 | QAT_PHYS_CONTIG_FREE(flat_dst_buf_array); | |
463 | ||
464 | return (status); | |
465 | } | |
466 | ||
38742209 TC |
467 | int |
468 | qat_checksum(uint64_t cksum, uint8_t *buf, uint64_t size, zio_cksum_t *zcp) | |
469 | { | |
470 | CpaStatus status; | |
471 | Cpa16U i; | |
472 | CpaInstanceHandle cy_inst_handle; | |
17dd8835 | 473 | Cpa16U nr_bufs = (size >> PAGE_SHIFT) + 2; |
38742209 TC |
474 | Cpa32U bytes_left = 0; |
475 | Cpa8S *data = NULL; | |
476 | CpaCySymSessionCtx *cy_session_ctx = NULL; | |
477 | cy_callback_t cb; | |
45001b94 | 478 | Cpa8U *digest_buffer = NULL; |
38742209 TC |
479 | CpaCySymOpData op_data = { 0 }; |
480 | CpaBufferList src_buffer_list = { 0 }; | |
481 | CpaFlatBuffer *flat_src_buf_array = NULL; | |
482 | CpaFlatBuffer *flat_src_buf = NULL; | |
483 | struct page *in_pages[MAX_PAGE_NUM]; | |
17dd8835 | 484 | Cpa32U page_num = 0; |
38742209 TC |
485 | Cpa32U page_off = 0; |
486 | ||
487 | QAT_STAT_BUMP(cksum_requests); | |
488 | QAT_STAT_INCR(cksum_total_in_bytes, size); | |
489 | ||
bc8a6a60 | 490 | i = (Cpa32U)atomic_inc_32_nv(&inst_num) % num_inst; |
38742209 TC |
491 | cy_inst_handle = cy_inst_handles[i]; |
492 | ||
493 | status = qat_init_checksum_session_ctx(cy_inst_handle, | |
494 | &cy_session_ctx, cksum); | |
495 | if (status != CPA_STATUS_SUCCESS) { | |
496 | /* don't count unsupported checksums as a failure */ | |
497 | if (cksum == ZIO_CHECKSUM_SHA256 || | |
498 | cksum == ZIO_CHECKSUM_SHA512) | |
499 | QAT_STAT_BUMP(cksum_fails); | |
500 | return (status); | |
501 | } | |
502 | ||
17dd8835 TC |
503 | /* |
504 | * We increment nr_bufs by 2 to allow us to handle non | |
505 | * page-aligned buffer addresses and buffers whose sizes | |
506 | * are not divisible by PAGE_SIZE. | |
507 | */ | |
38742209 TC |
508 | status = qat_init_cy_buffer_lists(cy_inst_handle, nr_bufs, |
509 | &src_buffer_list, &src_buffer_list); | |
510 | if (status != CPA_STATUS_SUCCESS) | |
511 | goto fail; | |
512 | ||
513 | status = QAT_PHYS_CONTIG_ALLOC(&flat_src_buf_array, | |
514 | nr_bufs * sizeof (CpaFlatBuffer)); | |
515 | if (status != CPA_STATUS_SUCCESS) | |
516 | goto fail; | |
45001b94 CZ |
517 | status = QAT_PHYS_CONTIG_ALLOC(&digest_buffer, |
518 | sizeof (zio_cksum_t)); | |
519 | if (status != CPA_STATUS_SUCCESS) | |
520 | goto fail; | |
38742209 TC |
521 | |
522 | bytes_left = size; | |
523 | data = buf; | |
524 | flat_src_buf = flat_src_buf_array; | |
525 | while (bytes_left > 0) { | |
526 | page_off = ((long)data & ~PAGE_MASK); | |
527 | in_pages[page_num] = qat_mem_to_page(data); | |
528 | flat_src_buf->pData = kmap(in_pages[page_num]) + page_off; | |
529 | flat_src_buf->dataLenInBytes = | |
17dd8835 | 530 | min((long)PAGE_SIZE - page_off, (long)bytes_left); |
38742209 TC |
531 | data += flat_src_buf->dataLenInBytes; |
532 | bytes_left -= flat_src_buf->dataLenInBytes; | |
533 | flat_src_buf++; | |
534 | page_num++; | |
535 | } | |
536 | src_buffer_list.pBuffers = flat_src_buf_array; | |
17dd8835 | 537 | src_buffer_list.numBuffers = page_num; |
38742209 TC |
538 | |
539 | op_data.sessionCtx = cy_session_ctx; | |
540 | op_data.packetType = CPA_CY_SYM_PACKET_TYPE_FULL; | |
541 | op_data.hashStartSrcOffsetInBytes = 0; | |
542 | op_data.messageLenToHashInBytes = size; | |
543 | op_data.pDigestResult = digest_buffer; | |
544 | ||
545 | cb.verify_result = CPA_FALSE; | |
546 | init_completion(&cb.complete); | |
547 | status = cpaCySymPerformOp(cy_inst_handle, &cb, &op_data, | |
548 | &src_buffer_list, &src_buffer_list, NULL); | |
549 | if (status != CPA_STATUS_SUCCESS) | |
550 | goto fail; | |
551 | ||
552 | if (!wait_for_completion_interruptible_timeout(&cb.complete, | |
553 | QAT_TIMEOUT_MS)) { | |
554 | status = CPA_STATUS_FAIL; | |
555 | goto fail; | |
556 | } | |
45001b94 CZ |
557 | if (cb.verify_result == CPA_FALSE) { |
558 | status = CPA_STATUS_FAIL; | |
559 | goto fail; | |
560 | } | |
38742209 TC |
561 | |
562 | bcopy(digest_buffer, zcp, sizeof (zio_cksum_t)); | |
563 | ||
564 | fail: | |
565 | if (status != CPA_STATUS_SUCCESS) | |
566 | QAT_STAT_BUMP(cksum_fails); | |
567 | ||
568 | for (i = 0; i < page_num; i++) | |
569 | kunmap(in_pages[i]); | |
570 | ||
571 | cpaCySymRemoveSession(cy_inst_handle, cy_session_ctx); | |
45001b94 | 572 | QAT_PHYS_CONTIG_FREE(digest_buffer); |
38742209 TC |
573 | QAT_PHYS_CONTIG_FREE(src_buffer_list.pPrivateMetaData); |
574 | QAT_PHYS_CONTIG_FREE(cy_session_ctx); | |
575 | QAT_PHYS_CONTIG_FREE(flat_src_buf_array); | |
576 | ||
577 | return (status); | |
578 | } | |
579 | ||
5090f727 | 580 | static int |
6988f3ed | 581 | param_set_qat_encrypt(const char *val, zfs_kernel_param_t *kp) |
5090f727 CZ |
582 | { |
583 | int ret; | |
584 | int *pvalue = kp->arg; | |
585 | ret = param_set_int(val, kp); | |
586 | if (ret) | |
587 | return (ret); | |
588 | /* | |
589 | * zfs_qat_encrypt_disable = 0: enable qat encrypt | |
590 | * try to initialize qat instance if it has not been done | |
591 | */ | |
592 | if (*pvalue == 0 && !qat_cy_init_done) { | |
593 | ret = qat_cy_init(); | |
594 | if (ret != 0) { | |
595 | zfs_qat_encrypt_disable = 1; | |
596 | return (ret); | |
597 | } | |
598 | } | |
599 | return (ret); | |
600 | } | |
601 | ||
602 | static int | |
6988f3ed | 603 | param_set_qat_checksum(const char *val, zfs_kernel_param_t *kp) |
5090f727 CZ |
604 | { |
605 | int ret; | |
606 | int *pvalue = kp->arg; | |
607 | ret = param_set_int(val, kp); | |
608 | if (ret) | |
609 | return (ret); | |
610 | /* | |
611 | * set_checksum_param_ops = 0: enable qat checksum | |
612 | * try to initialize qat instance if it has not been done | |
613 | */ | |
614 | if (*pvalue == 0 && !qat_cy_init_done) { | |
615 | ret = qat_cy_init(); | |
616 | if (ret != 0) { | |
617 | zfs_qat_checksum_disable = 1; | |
618 | return (ret); | |
619 | } | |
620 | } | |
621 | return (ret); | |
622 | } | |
623 | ||
624 | module_param_call(zfs_qat_encrypt_disable, param_set_qat_encrypt, | |
625 | param_get_int, &zfs_qat_encrypt_disable, 0644); | |
626 | MODULE_PARM_DESC(zfs_qat_encrypt_disable, "Enable/Disable QAT encryption"); | |
38742209 | 627 | |
5090f727 CZ |
628 | module_param_call(zfs_qat_checksum_disable, param_set_qat_checksum, |
629 | param_get_int, &zfs_qat_checksum_disable, 0644); | |
630 | MODULE_PARM_DESC(zfs_qat_checksum_disable, "Enable/Disable QAT checksumming"); | |
cf637391 TC |
631 | |
632 | #endif |