Commit | Line | Data |
---|---|---|
0ab0a1d5 TL |
1 | /* |
2 | * AMD Cryptographic Coprocessor (CCP) SHA crypto API support | |
3 | * | |
c7019c4d | 4 | * Copyright (C) 2013,2016 Advanced Micro Devices, Inc. |
0ab0a1d5 TL |
5 | * |
6 | * Author: Tom Lendacky <thomas.lendacky@amd.com> | |
4b394a23 | 7 | * Author: Gary R Hook <gary.hook@amd.com> |
0ab0a1d5 TL |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | */ | |
13 | ||
14 | #include <linux/module.h> | |
15 | #include <linux/sched.h> | |
16 | #include <linux/delay.h> | |
17 | #include <linux/scatterlist.h> | |
18 | #include <linux/crypto.h> | |
19 | #include <crypto/algapi.h> | |
20 | #include <crypto/hash.h> | |
21 | #include <crypto/internal/hash.h> | |
22 | #include <crypto/sha.h> | |
23 | #include <crypto/scatterwalk.h> | |
24 | ||
25 | #include "ccp-crypto.h" | |
26 | ||
0ab0a1d5 TL |
27 | static int ccp_sha_complete(struct crypto_async_request *async_req, int ret) |
28 | { | |
29 | struct ahash_request *req = ahash_request_cast(async_req); | |
30 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
0ab0a1d5 TL |
31 | struct ccp_sha_req_ctx *rctx = ahash_request_ctx(req); |
32 | unsigned int digest_size = crypto_ahash_digestsize(tfm); | |
33 | ||
34 | if (ret) | |
35 | goto e_free; | |
36 | ||
37 | if (rctx->hash_rem) { | |
38 | /* Save remaining data to buffer */ | |
81a59f00 | 39 | unsigned int offset = rctx->nbytes - rctx->hash_rem; |
8db88467 | 40 | |
81a59f00 TL |
41 | scatterwalk_map_and_copy(rctx->buf, rctx->src, |
42 | offset, rctx->hash_rem, 0); | |
0ab0a1d5 | 43 | rctx->buf_count = rctx->hash_rem; |
8db88467 | 44 | } else { |
0ab0a1d5 | 45 | rctx->buf_count = 0; |
8db88467 | 46 | } |
0ab0a1d5 | 47 | |
393897c5 TL |
48 | /* Update result area if supplied */ |
49 | if (req->result) | |
50 | memcpy(req->result, rctx->ctx, digest_size); | |
0ab0a1d5 | 51 | |
0ab0a1d5 TL |
52 | e_free: |
53 | sg_free_table(&rctx->data_sg); | |
54 | ||
55 | return ret; | |
56 | } | |
57 | ||
58 | static int ccp_do_sha_update(struct ahash_request *req, unsigned int nbytes, | |
59 | unsigned int final) | |
60 | { | |
61 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
c11baa02 | 62 | struct ccp_ctx *ctx = crypto_ahash_ctx(tfm); |
0ab0a1d5 TL |
63 | struct ccp_sha_req_ctx *rctx = ahash_request_ctx(req); |
64 | struct scatterlist *sg; | |
65 | unsigned int block_size = | |
66 | crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm)); | |
81a59f00 | 67 | unsigned int sg_count; |
5258de8a | 68 | gfp_t gfp; |
81a59f00 | 69 | u64 len; |
0ab0a1d5 TL |
70 | int ret; |
71 | ||
81a59f00 TL |
72 | len = (u64)rctx->buf_count + (u64)nbytes; |
73 | ||
74 | if (!final && (len <= block_size)) { | |
0ab0a1d5 TL |
75 | scatterwalk_map_and_copy(rctx->buf + rctx->buf_count, req->src, |
76 | 0, nbytes, 0); | |
77 | rctx->buf_count += nbytes; | |
78 | ||
79 | return 0; | |
80 | } | |
81 | ||
81a59f00 TL |
82 | rctx->src = req->src; |
83 | rctx->nbytes = nbytes; | |
0ab0a1d5 TL |
84 | |
85 | rctx->final = final; | |
81a59f00 TL |
86 | rctx->hash_rem = final ? 0 : len & (block_size - 1); |
87 | rctx->hash_cnt = len - rctx->hash_rem; | |
88 | if (!final && !rctx->hash_rem) { | |
0ab0a1d5 TL |
89 | /* CCP can't do zero length final, so keep some data around */ |
90 | rctx->hash_cnt -= block_size; | |
91 | rctx->hash_rem = block_size; | |
92 | } | |
93 | ||
94 | /* Initialize the context scatterlist */ | |
95 | sg_init_one(&rctx->ctx_sg, rctx->ctx, sizeof(rctx->ctx)); | |
96 | ||
0ab0a1d5 | 97 | sg = NULL; |
77dc4a51 TL |
98 | if (rctx->buf_count && nbytes) { |
99 | /* Build the data scatterlist table - allocate enough entries | |
100 | * for both data pieces (buffer and input data) | |
101 | */ | |
102 | gfp = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? | |
103 | GFP_KERNEL : GFP_ATOMIC; | |
104 | sg_count = sg_nents(req->src) + 1; | |
105 | ret = sg_alloc_table(&rctx->data_sg, sg_count, gfp); | |
106 | if (ret) | |
107 | return ret; | |
0ab0a1d5 | 108 | |
0ab0a1d5 TL |
109 | sg_init_one(&rctx->buf_sg, rctx->buf, rctx->buf_count); |
110 | sg = ccp_crypto_sg_table_add(&rctx->data_sg, &rctx->buf_sg); | |
355eba5d TL |
111 | if (!sg) { |
112 | ret = -EINVAL; | |
113 | goto e_free; | |
114 | } | |
0ab0a1d5 | 115 | sg = ccp_crypto_sg_table_add(&rctx->data_sg, req->src); |
355eba5d TL |
116 | if (!sg) { |
117 | ret = -EINVAL; | |
118 | goto e_free; | |
119 | } | |
0ab0a1d5 TL |
120 | sg_mark_end(sg); |
121 | ||
77dc4a51 TL |
122 | sg = rctx->data_sg.sgl; |
123 | } else if (rctx->buf_count) { | |
124 | sg_init_one(&rctx->buf_sg, rctx->buf, rctx->buf_count); | |
125 | ||
126 | sg = &rctx->buf_sg; | |
127 | } else if (nbytes) { | |
128 | sg = req->src; | |
129 | } | |
130 | ||
0ab0a1d5 TL |
131 | rctx->msg_bits += (rctx->hash_cnt << 3); /* Total in bits */ |
132 | ||
133 | memset(&rctx->cmd, 0, sizeof(rctx->cmd)); | |
134 | INIT_LIST_HEAD(&rctx->cmd.entry); | |
135 | rctx->cmd.engine = CCP_ENGINE_SHA; | |
136 | rctx->cmd.u.sha.type = rctx->type; | |
137 | rctx->cmd.u.sha.ctx = &rctx->ctx_sg; | |
4b394a23 GH |
138 | |
139 | switch (rctx->type) { | |
140 | case CCP_SHA_TYPE_1: | |
141 | rctx->cmd.u.sha.ctx_len = SHA1_DIGEST_SIZE; | |
142 | break; | |
143 | case CCP_SHA_TYPE_224: | |
144 | rctx->cmd.u.sha.ctx_len = SHA224_DIGEST_SIZE; | |
145 | break; | |
146 | case CCP_SHA_TYPE_256: | |
147 | rctx->cmd.u.sha.ctx_len = SHA256_DIGEST_SIZE; | |
148 | break; | |
149 | default: | |
150 | /* Should never get here */ | |
151 | break; | |
152 | } | |
153 | ||
77dc4a51 | 154 | rctx->cmd.u.sha.src = sg; |
0ab0a1d5 | 155 | rctx->cmd.u.sha.src_len = rctx->hash_cnt; |
c11baa02 TL |
156 | rctx->cmd.u.sha.opad = ctx->u.sha.key_len ? |
157 | &ctx->u.sha.opad_sg : NULL; | |
158 | rctx->cmd.u.sha.opad_len = ctx->u.sha.key_len ? | |
159 | ctx->u.sha.opad_count : 0; | |
160 | rctx->cmd.u.sha.first = rctx->first; | |
0ab0a1d5 TL |
161 | rctx->cmd.u.sha.final = rctx->final; |
162 | rctx->cmd.u.sha.msg_bits = rctx->msg_bits; | |
163 | ||
164 | rctx->first = 0; | |
165 | ||
166 | ret = ccp_crypto_enqueue_request(&req->base, &rctx->cmd); | |
167 | ||
355eba5d TL |
168 | return ret; |
169 | ||
170 | e_free: | |
171 | sg_free_table(&rctx->data_sg); | |
172 | ||
0ab0a1d5 TL |
173 | return ret; |
174 | } | |
175 | ||
176 | static int ccp_sha_init(struct ahash_request *req) | |
177 | { | |
178 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
77dc4a51 | 179 | struct ccp_ctx *ctx = crypto_ahash_ctx(tfm); |
0ab0a1d5 TL |
180 | struct ccp_sha_req_ctx *rctx = ahash_request_ctx(req); |
181 | struct ccp_crypto_ahash_alg *alg = | |
182 | ccp_crypto_ahash_alg(crypto_ahash_tfm(tfm)); | |
77dc4a51 TL |
183 | unsigned int block_size = |
184 | crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm)); | |
0ab0a1d5 TL |
185 | |
186 | memset(rctx, 0, sizeof(*rctx)); | |
187 | ||
0ab0a1d5 TL |
188 | rctx->type = alg->type; |
189 | rctx->first = 1; | |
190 | ||
77dc4a51 TL |
191 | if (ctx->u.sha.key_len) { |
192 | /* Buffer the HMAC key for first update */ | |
193 | memcpy(rctx->buf, ctx->u.sha.ipad, block_size); | |
194 | rctx->buf_count = block_size; | |
195 | } | |
196 | ||
0ab0a1d5 TL |
197 | return 0; |
198 | } | |
199 | ||
200 | static int ccp_sha_update(struct ahash_request *req) | |
201 | { | |
202 | return ccp_do_sha_update(req, req->nbytes, 0); | |
203 | } | |
204 | ||
205 | static int ccp_sha_final(struct ahash_request *req) | |
206 | { | |
207 | return ccp_do_sha_update(req, 0, 1); | |
208 | } | |
209 | ||
210 | static int ccp_sha_finup(struct ahash_request *req) | |
211 | { | |
212 | return ccp_do_sha_update(req, req->nbytes, 1); | |
213 | } | |
214 | ||
215 | static int ccp_sha_digest(struct ahash_request *req) | |
216 | { | |
82d1585b | 217 | int ret; |
0ab0a1d5 | 218 | |
82d1585b TL |
219 | ret = ccp_sha_init(req); |
220 | if (ret) | |
221 | return ret; | |
222 | ||
223 | return ccp_sha_finup(req); | |
0ab0a1d5 TL |
224 | } |
225 | ||
952bce97 TL |
226 | static int ccp_sha_export(struct ahash_request *req, void *out) |
227 | { | |
228 | struct ccp_sha_req_ctx *rctx = ahash_request_ctx(req); | |
b31dde2a | 229 | struct ccp_sha_exp_ctx state; |
952bce97 | 230 | |
f709b45e TL |
231 | /* Don't let anything leak to 'out' */ |
232 | memset(&state, 0, sizeof(state)); | |
233 | ||
b31dde2a TL |
234 | state.type = rctx->type; |
235 | state.msg_bits = rctx->msg_bits; | |
236 | state.first = rctx->first; | |
237 | memcpy(state.ctx, rctx->ctx, sizeof(state.ctx)); | |
238 | state.buf_count = rctx->buf_count; | |
239 | memcpy(state.buf, rctx->buf, sizeof(state.buf)); | |
240 | ||
241 | /* 'out' may not be aligned so memcpy from local variable */ | |
242 | memcpy(out, &state, sizeof(state)); | |
952bce97 TL |
243 | |
244 | return 0; | |
245 | } | |
246 | ||
247 | static int ccp_sha_import(struct ahash_request *req, const void *in) | |
248 | { | |
249 | struct ccp_sha_req_ctx *rctx = ahash_request_ctx(req); | |
b31dde2a TL |
250 | struct ccp_sha_exp_ctx state; |
251 | ||
252 | /* 'in' may not be aligned so memcpy to local variable */ | |
253 | memcpy(&state, in, sizeof(state)); | |
254 | ||
ce0ae266 | 255 | memset(rctx, 0, sizeof(*rctx)); |
b31dde2a TL |
256 | rctx->type = state.type; |
257 | rctx->msg_bits = state.msg_bits; | |
258 | rctx->first = state.first; | |
259 | memcpy(rctx->ctx, state.ctx, sizeof(rctx->ctx)); | |
260 | rctx->buf_count = state.buf_count; | |
261 | memcpy(rctx->buf, state.buf, sizeof(rctx->buf)); | |
952bce97 TL |
262 | |
263 | return 0; | |
264 | } | |
265 | ||
0ab0a1d5 TL |
266 | static int ccp_sha_setkey(struct crypto_ahash *tfm, const u8 *key, |
267 | unsigned int key_len) | |
268 | { | |
269 | struct ccp_ctx *ctx = crypto_tfm_ctx(crypto_ahash_tfm(tfm)); | |
c11baa02 | 270 | struct crypto_shash *shash = ctx->u.sha.hmac_tfm; |
61ded524 JSM |
271 | |
272 | SHASH_DESC_ON_STACK(sdesc, shash); | |
273 | ||
c11baa02 TL |
274 | unsigned int block_size = crypto_shash_blocksize(shash); |
275 | unsigned int digest_size = crypto_shash_digestsize(shash); | |
0ab0a1d5 TL |
276 | int i, ret; |
277 | ||
278 | /* Set to zero until complete */ | |
279 | ctx->u.sha.key_len = 0; | |
280 | ||
281 | /* Clear key area to provide zero padding for keys smaller | |
282 | * than the block size | |
283 | */ | |
284 | memset(ctx->u.sha.key, 0, sizeof(ctx->u.sha.key)); | |
285 | ||
286 | if (key_len > block_size) { | |
287 | /* Must hash the input key */ | |
61ded524 JSM |
288 | sdesc->tfm = shash; |
289 | sdesc->flags = crypto_ahash_get_flags(tfm) & | |
c11baa02 TL |
290 | CRYPTO_TFM_REQ_MAY_SLEEP; |
291 | ||
61ded524 | 292 | ret = crypto_shash_digest(sdesc, key, key_len, |
c11baa02 | 293 | ctx->u.sha.key); |
0ab0a1d5 TL |
294 | if (ret) { |
295 | crypto_ahash_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN); | |
296 | return -EINVAL; | |
297 | } | |
298 | ||
299 | key_len = digest_size; | |
8db88467 | 300 | } else { |
0ab0a1d5 | 301 | memcpy(ctx->u.sha.key, key, key_len); |
8db88467 | 302 | } |
0ab0a1d5 TL |
303 | |
304 | for (i = 0; i < block_size; i++) { | |
305 | ctx->u.sha.ipad[i] = ctx->u.sha.key[i] ^ 0x36; | |
306 | ctx->u.sha.opad[i] = ctx->u.sha.key[i] ^ 0x5c; | |
307 | } | |
308 | ||
c11baa02 TL |
309 | sg_init_one(&ctx->u.sha.opad_sg, ctx->u.sha.opad, block_size); |
310 | ctx->u.sha.opad_count = block_size; | |
311 | ||
0ab0a1d5 TL |
312 | ctx->u.sha.key_len = key_len; |
313 | ||
314 | return 0; | |
315 | } | |
316 | ||
317 | static int ccp_sha_cra_init(struct crypto_tfm *tfm) | |
318 | { | |
319 | struct ccp_ctx *ctx = crypto_tfm_ctx(tfm); | |
320 | struct crypto_ahash *ahash = __crypto_ahash_cast(tfm); | |
321 | ||
322 | ctx->complete = ccp_sha_complete; | |
323 | ctx->u.sha.key_len = 0; | |
324 | ||
325 | crypto_ahash_set_reqsize(ahash, sizeof(struct ccp_sha_req_ctx)); | |
326 | ||
327 | return 0; | |
328 | } | |
329 | ||
330 | static void ccp_sha_cra_exit(struct crypto_tfm *tfm) | |
331 | { | |
332 | } | |
333 | ||
334 | static int ccp_hmac_sha_cra_init(struct crypto_tfm *tfm) | |
335 | { | |
336 | struct ccp_ctx *ctx = crypto_tfm_ctx(tfm); | |
337 | struct ccp_crypto_ahash_alg *alg = ccp_crypto_ahash_alg(tfm); | |
c11baa02 | 338 | struct crypto_shash *hmac_tfm; |
0ab0a1d5 | 339 | |
c11baa02 | 340 | hmac_tfm = crypto_alloc_shash(alg->child_alg, 0, 0); |
0ab0a1d5 TL |
341 | if (IS_ERR(hmac_tfm)) { |
342 | pr_warn("could not load driver %s need for HMAC support\n", | |
343 | alg->child_alg); | |
344 | return PTR_ERR(hmac_tfm); | |
345 | } | |
346 | ||
347 | ctx->u.sha.hmac_tfm = hmac_tfm; | |
348 | ||
349 | return ccp_sha_cra_init(tfm); | |
350 | } | |
351 | ||
352 | static void ccp_hmac_sha_cra_exit(struct crypto_tfm *tfm) | |
353 | { | |
354 | struct ccp_ctx *ctx = crypto_tfm_ctx(tfm); | |
355 | ||
356 | if (ctx->u.sha.hmac_tfm) | |
c11baa02 | 357 | crypto_free_shash(ctx->u.sha.hmac_tfm); |
0ab0a1d5 TL |
358 | |
359 | ccp_sha_cra_exit(tfm); | |
360 | } | |
361 | ||
0ab0a1d5 | 362 | struct ccp_sha_def { |
c7019c4d | 363 | unsigned int version; |
0ab0a1d5 TL |
364 | const char *name; |
365 | const char *drv_name; | |
0ab0a1d5 TL |
366 | enum ccp_sha_type type; |
367 | u32 digest_size; | |
368 | u32 block_size; | |
369 | }; | |
370 | ||
371 | static struct ccp_sha_def sha_algs[] = { | |
372 | { | |
c7019c4d | 373 | .version = CCP_VERSION(3, 0), |
0ab0a1d5 TL |
374 | .name = "sha1", |
375 | .drv_name = "sha1-ccp", | |
0ab0a1d5 TL |
376 | .type = CCP_SHA_TYPE_1, |
377 | .digest_size = SHA1_DIGEST_SIZE, | |
378 | .block_size = SHA1_BLOCK_SIZE, | |
379 | }, | |
380 | { | |
c7019c4d | 381 | .version = CCP_VERSION(3, 0), |
0ab0a1d5 TL |
382 | .name = "sha224", |
383 | .drv_name = "sha224-ccp", | |
0ab0a1d5 TL |
384 | .type = CCP_SHA_TYPE_224, |
385 | .digest_size = SHA224_DIGEST_SIZE, | |
386 | .block_size = SHA224_BLOCK_SIZE, | |
387 | }, | |
388 | { | |
c7019c4d | 389 | .version = CCP_VERSION(3, 0), |
0ab0a1d5 TL |
390 | .name = "sha256", |
391 | .drv_name = "sha256-ccp", | |
0ab0a1d5 TL |
392 | .type = CCP_SHA_TYPE_256, |
393 | .digest_size = SHA256_DIGEST_SIZE, | |
394 | .block_size = SHA256_BLOCK_SIZE, | |
395 | }, | |
396 | }; | |
397 | ||
398 | static int ccp_register_hmac_alg(struct list_head *head, | |
399 | const struct ccp_sha_def *def, | |
400 | const struct ccp_crypto_ahash_alg *base_alg) | |
401 | { | |
402 | struct ccp_crypto_ahash_alg *ccp_alg; | |
403 | struct ahash_alg *alg; | |
404 | struct hash_alg_common *halg; | |
405 | struct crypto_alg *base; | |
406 | int ret; | |
407 | ||
408 | ccp_alg = kzalloc(sizeof(*ccp_alg), GFP_KERNEL); | |
409 | if (!ccp_alg) | |
410 | return -ENOMEM; | |
411 | ||
412 | /* Copy the base algorithm and only change what's necessary */ | |
d1dd206c | 413 | *ccp_alg = *base_alg; |
0ab0a1d5 TL |
414 | INIT_LIST_HEAD(&ccp_alg->entry); |
415 | ||
416 | strncpy(ccp_alg->child_alg, def->name, CRYPTO_MAX_ALG_NAME); | |
417 | ||
418 | alg = &ccp_alg->alg; | |
419 | alg->setkey = ccp_sha_setkey; | |
420 | ||
421 | halg = &alg->halg; | |
422 | ||
423 | base = &halg->base; | |
424 | snprintf(base->cra_name, CRYPTO_MAX_ALG_NAME, "hmac(%s)", def->name); | |
425 | snprintf(base->cra_driver_name, CRYPTO_MAX_ALG_NAME, "hmac-%s", | |
426 | def->drv_name); | |
427 | base->cra_init = ccp_hmac_sha_cra_init; | |
428 | base->cra_exit = ccp_hmac_sha_cra_exit; | |
429 | ||
430 | ret = crypto_register_ahash(alg); | |
431 | if (ret) { | |
432 | pr_err("%s ahash algorithm registration error (%d)\n", | |
8db88467 | 433 | base->cra_name, ret); |
0ab0a1d5 TL |
434 | kfree(ccp_alg); |
435 | return ret; | |
436 | } | |
437 | ||
438 | list_add(&ccp_alg->entry, head); | |
439 | ||
440 | return ret; | |
441 | } | |
442 | ||
443 | static int ccp_register_sha_alg(struct list_head *head, | |
444 | const struct ccp_sha_def *def) | |
445 | { | |
446 | struct ccp_crypto_ahash_alg *ccp_alg; | |
447 | struct ahash_alg *alg; | |
448 | struct hash_alg_common *halg; | |
449 | struct crypto_alg *base; | |
450 | int ret; | |
451 | ||
452 | ccp_alg = kzalloc(sizeof(*ccp_alg), GFP_KERNEL); | |
453 | if (!ccp_alg) | |
454 | return -ENOMEM; | |
455 | ||
456 | INIT_LIST_HEAD(&ccp_alg->entry); | |
457 | ||
0ab0a1d5 TL |
458 | ccp_alg->type = def->type; |
459 | ||
460 | alg = &ccp_alg->alg; | |
461 | alg->init = ccp_sha_init; | |
462 | alg->update = ccp_sha_update; | |
463 | alg->final = ccp_sha_final; | |
464 | alg->finup = ccp_sha_finup; | |
465 | alg->digest = ccp_sha_digest; | |
952bce97 TL |
466 | alg->export = ccp_sha_export; |
467 | alg->import = ccp_sha_import; | |
0ab0a1d5 TL |
468 | |
469 | halg = &alg->halg; | |
470 | halg->digestsize = def->digest_size; | |
d1662165 | 471 | halg->statesize = sizeof(struct ccp_sha_exp_ctx); |
0ab0a1d5 TL |
472 | |
473 | base = &halg->base; | |
474 | snprintf(base->cra_name, CRYPTO_MAX_ALG_NAME, "%s", def->name); | |
475 | snprintf(base->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s", | |
476 | def->drv_name); | |
477 | base->cra_flags = CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_ASYNC | | |
478 | CRYPTO_ALG_KERN_DRIVER_ONLY | | |
479 | CRYPTO_ALG_NEED_FALLBACK; | |
480 | base->cra_blocksize = def->block_size; | |
481 | base->cra_ctxsize = sizeof(struct ccp_ctx); | |
482 | base->cra_priority = CCP_CRA_PRIORITY; | |
483 | base->cra_type = &crypto_ahash_type; | |
484 | base->cra_init = ccp_sha_cra_init; | |
485 | base->cra_exit = ccp_sha_cra_exit; | |
486 | base->cra_module = THIS_MODULE; | |
487 | ||
488 | ret = crypto_register_ahash(alg); | |
489 | if (ret) { | |
490 | pr_err("%s ahash algorithm registration error (%d)\n", | |
8db88467 | 491 | base->cra_name, ret); |
0ab0a1d5 TL |
492 | kfree(ccp_alg); |
493 | return ret; | |
494 | } | |
495 | ||
496 | list_add(&ccp_alg->entry, head); | |
497 | ||
498 | ret = ccp_register_hmac_alg(head, def, ccp_alg); | |
499 | ||
500 | return ret; | |
501 | } | |
502 | ||
503 | int ccp_register_sha_algs(struct list_head *head) | |
504 | { | |
505 | int i, ret; | |
c7019c4d | 506 | unsigned int ccpversion = ccp_version(); |
0ab0a1d5 TL |
507 | |
508 | for (i = 0; i < ARRAY_SIZE(sha_algs); i++) { | |
c7019c4d GH |
509 | if (sha_algs[i].version > ccpversion) |
510 | continue; | |
0ab0a1d5 TL |
511 | ret = ccp_register_sha_alg(head, &sha_algs[i]); |
512 | if (ret) | |
513 | return ret; | |
514 | } | |
515 | ||
516 | return 0; | |
517 | } |