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crypto: ahash - remove useless setting of cra_type
[mirror_ubuntu-hirsute-kernel.git] / drivers / crypto / chelsio / chcr_algo.c
1 /*
2 * This file is part of the Chelsio T6 Crypto driver for Linux.
3 *
4 * Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved.
5 *
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer.
19 *
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * SOFTWARE.
33 *
34 * Written and Maintained by:
35 * Manoj Malviya (manojmalviya@chelsio.com)
36 * Atul Gupta (atul.gupta@chelsio.com)
37 * Jitendra Lulla (jlulla@chelsio.com)
38 * Yeshaswi M R Gowda (yeshaswi@chelsio.com)
39 * Harsh Jain (harsh@chelsio.com)
40 */
41
42 #define pr_fmt(fmt) "chcr:" fmt
43
44 #include <linux/kernel.h>
45 #include <linux/module.h>
46 #include <linux/crypto.h>
47 #include <linux/cryptohash.h>
48 #include <linux/skbuff.h>
49 #include <linux/rtnetlink.h>
50 #include <linux/highmem.h>
51 #include <linux/scatterlist.h>
52
53 #include <crypto/aes.h>
54 #include <crypto/algapi.h>
55 #include <crypto/hash.h>
56 #include <crypto/gcm.h>
57 #include <crypto/sha.h>
58 #include <crypto/authenc.h>
59 #include <crypto/ctr.h>
60 #include <crypto/gf128mul.h>
61 #include <crypto/internal/aead.h>
62 #include <crypto/null.h>
63 #include <crypto/internal/skcipher.h>
64 #include <crypto/aead.h>
65 #include <crypto/scatterwalk.h>
66 #include <crypto/internal/hash.h>
67
68 #include "t4fw_api.h"
69 #include "t4_msg.h"
70 #include "chcr_core.h"
71 #include "chcr_algo.h"
72 #include "chcr_crypto.h"
73
74 #define IV AES_BLOCK_SIZE
75
76 static unsigned int sgl_ent_len[] = {
77 0, 0, 16, 24, 40, 48, 64, 72, 88,
78 96, 112, 120, 136, 144, 160, 168, 184,
79 192, 208, 216, 232, 240, 256, 264, 280,
80 288, 304, 312, 328, 336, 352, 360, 376
81 };
82
83 static unsigned int dsgl_ent_len[] = {
84 0, 32, 32, 48, 48, 64, 64, 80, 80,
85 112, 112, 128, 128, 144, 144, 160, 160,
86 192, 192, 208, 208, 224, 224, 240, 240,
87 272, 272, 288, 288, 304, 304, 320, 320
88 };
89
90 static u32 round_constant[11] = {
91 0x01000000, 0x02000000, 0x04000000, 0x08000000,
92 0x10000000, 0x20000000, 0x40000000, 0x80000000,
93 0x1B000000, 0x36000000, 0x6C000000
94 };
95
96 static int chcr_handle_cipher_resp(struct ablkcipher_request *req,
97 unsigned char *input, int err);
98
99 static inline struct chcr_aead_ctx *AEAD_CTX(struct chcr_context *ctx)
100 {
101 return ctx->crypto_ctx->aeadctx;
102 }
103
104 static inline struct ablk_ctx *ABLK_CTX(struct chcr_context *ctx)
105 {
106 return ctx->crypto_ctx->ablkctx;
107 }
108
109 static inline struct hmac_ctx *HMAC_CTX(struct chcr_context *ctx)
110 {
111 return ctx->crypto_ctx->hmacctx;
112 }
113
114 static inline struct chcr_gcm_ctx *GCM_CTX(struct chcr_aead_ctx *gctx)
115 {
116 return gctx->ctx->gcm;
117 }
118
119 static inline struct chcr_authenc_ctx *AUTHENC_CTX(struct chcr_aead_ctx *gctx)
120 {
121 return gctx->ctx->authenc;
122 }
123
124 static inline struct uld_ctx *ULD_CTX(struct chcr_context *ctx)
125 {
126 return ctx->dev->u_ctx;
127 }
128
129 static inline int is_ofld_imm(const struct sk_buff *skb)
130 {
131 return (skb->len <= SGE_MAX_WR_LEN);
132 }
133
134 static inline void chcr_init_hctx_per_wr(struct chcr_ahash_req_ctx *reqctx)
135 {
136 memset(&reqctx->hctx_wr, 0, sizeof(struct chcr_hctx_per_wr));
137 }
138
139 static int sg_nents_xlen(struct scatterlist *sg, unsigned int reqlen,
140 unsigned int entlen,
141 unsigned int skip)
142 {
143 int nents = 0;
144 unsigned int less;
145 unsigned int skip_len = 0;
146
147 while (sg && skip) {
148 if (sg_dma_len(sg) <= skip) {
149 skip -= sg_dma_len(sg);
150 skip_len = 0;
151 sg = sg_next(sg);
152 } else {
153 skip_len = skip;
154 skip = 0;
155 }
156 }
157
158 while (sg && reqlen) {
159 less = min(reqlen, sg_dma_len(sg) - skip_len);
160 nents += DIV_ROUND_UP(less, entlen);
161 reqlen -= less;
162 skip_len = 0;
163 sg = sg_next(sg);
164 }
165 return nents;
166 }
167
168 static inline int get_aead_subtype(struct crypto_aead *aead)
169 {
170 struct aead_alg *alg = crypto_aead_alg(aead);
171 struct chcr_alg_template *chcr_crypto_alg =
172 container_of(alg, struct chcr_alg_template, alg.aead);
173 return chcr_crypto_alg->type & CRYPTO_ALG_SUB_TYPE_MASK;
174 }
175
176 void chcr_verify_tag(struct aead_request *req, u8 *input, int *err)
177 {
178 u8 temp[SHA512_DIGEST_SIZE];
179 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
180 int authsize = crypto_aead_authsize(tfm);
181 struct cpl_fw6_pld *fw6_pld;
182 int cmp = 0;
183
184 fw6_pld = (struct cpl_fw6_pld *)input;
185 if ((get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106) ||
186 (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_GCM)) {
187 cmp = crypto_memneq(&fw6_pld->data[2], (fw6_pld + 1), authsize);
188 } else {
189
190 sg_pcopy_to_buffer(req->src, sg_nents(req->src), temp,
191 authsize, req->assoclen +
192 req->cryptlen - authsize);
193 cmp = crypto_memneq(temp, (fw6_pld + 1), authsize);
194 }
195 if (cmp)
196 *err = -EBADMSG;
197 else
198 *err = 0;
199 }
200
201 static inline void chcr_handle_aead_resp(struct aead_request *req,
202 unsigned char *input,
203 int err)
204 {
205 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
206
207 chcr_aead_common_exit(req);
208 if (reqctx->verify == VERIFY_SW) {
209 chcr_verify_tag(req, input, &err);
210 reqctx->verify = VERIFY_HW;
211 }
212 req->base.complete(&req->base, err);
213 }
214
215 static void get_aes_decrypt_key(unsigned char *dec_key,
216 const unsigned char *key,
217 unsigned int keylength)
218 {
219 u32 temp;
220 u32 w_ring[MAX_NK];
221 int i, j, k;
222 u8 nr, nk;
223
224 switch (keylength) {
225 case AES_KEYLENGTH_128BIT:
226 nk = KEYLENGTH_4BYTES;
227 nr = NUMBER_OF_ROUNDS_10;
228 break;
229 case AES_KEYLENGTH_192BIT:
230 nk = KEYLENGTH_6BYTES;
231 nr = NUMBER_OF_ROUNDS_12;
232 break;
233 case AES_KEYLENGTH_256BIT:
234 nk = KEYLENGTH_8BYTES;
235 nr = NUMBER_OF_ROUNDS_14;
236 break;
237 default:
238 return;
239 }
240 for (i = 0; i < nk; i++)
241 w_ring[i] = be32_to_cpu(*(u32 *)&key[4 * i]);
242
243 i = 0;
244 temp = w_ring[nk - 1];
245 while (i + nk < (nr + 1) * 4) {
246 if (!(i % nk)) {
247 /* RotWord(temp) */
248 temp = (temp << 8) | (temp >> 24);
249 temp = aes_ks_subword(temp);
250 temp ^= round_constant[i / nk];
251 } else if (nk == 8 && (i % 4 == 0)) {
252 temp = aes_ks_subword(temp);
253 }
254 w_ring[i % nk] ^= temp;
255 temp = w_ring[i % nk];
256 i++;
257 }
258 i--;
259 for (k = 0, j = i % nk; k < nk; k++) {
260 *((u32 *)dec_key + k) = htonl(w_ring[j]);
261 j--;
262 if (j < 0)
263 j += nk;
264 }
265 }
266
267 static struct crypto_shash *chcr_alloc_shash(unsigned int ds)
268 {
269 struct crypto_shash *base_hash = ERR_PTR(-EINVAL);
270
271 switch (ds) {
272 case SHA1_DIGEST_SIZE:
273 base_hash = crypto_alloc_shash("sha1", 0, 0);
274 break;
275 case SHA224_DIGEST_SIZE:
276 base_hash = crypto_alloc_shash("sha224", 0, 0);
277 break;
278 case SHA256_DIGEST_SIZE:
279 base_hash = crypto_alloc_shash("sha256", 0, 0);
280 break;
281 case SHA384_DIGEST_SIZE:
282 base_hash = crypto_alloc_shash("sha384", 0, 0);
283 break;
284 case SHA512_DIGEST_SIZE:
285 base_hash = crypto_alloc_shash("sha512", 0, 0);
286 break;
287 }
288
289 return base_hash;
290 }
291
292 static int chcr_compute_partial_hash(struct shash_desc *desc,
293 char *iopad, char *result_hash,
294 int digest_size)
295 {
296 struct sha1_state sha1_st;
297 struct sha256_state sha256_st;
298 struct sha512_state sha512_st;
299 int error;
300
301 if (digest_size == SHA1_DIGEST_SIZE) {
302 error = crypto_shash_init(desc) ?:
303 crypto_shash_update(desc, iopad, SHA1_BLOCK_SIZE) ?:
304 crypto_shash_export(desc, (void *)&sha1_st);
305 memcpy(result_hash, sha1_st.state, SHA1_DIGEST_SIZE);
306 } else if (digest_size == SHA224_DIGEST_SIZE) {
307 error = crypto_shash_init(desc) ?:
308 crypto_shash_update(desc, iopad, SHA256_BLOCK_SIZE) ?:
309 crypto_shash_export(desc, (void *)&sha256_st);
310 memcpy(result_hash, sha256_st.state, SHA256_DIGEST_SIZE);
311
312 } else if (digest_size == SHA256_DIGEST_SIZE) {
313 error = crypto_shash_init(desc) ?:
314 crypto_shash_update(desc, iopad, SHA256_BLOCK_SIZE) ?:
315 crypto_shash_export(desc, (void *)&sha256_st);
316 memcpy(result_hash, sha256_st.state, SHA256_DIGEST_SIZE);
317
318 } else if (digest_size == SHA384_DIGEST_SIZE) {
319 error = crypto_shash_init(desc) ?:
320 crypto_shash_update(desc, iopad, SHA512_BLOCK_SIZE) ?:
321 crypto_shash_export(desc, (void *)&sha512_st);
322 memcpy(result_hash, sha512_st.state, SHA512_DIGEST_SIZE);
323
324 } else if (digest_size == SHA512_DIGEST_SIZE) {
325 error = crypto_shash_init(desc) ?:
326 crypto_shash_update(desc, iopad, SHA512_BLOCK_SIZE) ?:
327 crypto_shash_export(desc, (void *)&sha512_st);
328 memcpy(result_hash, sha512_st.state, SHA512_DIGEST_SIZE);
329 } else {
330 error = -EINVAL;
331 pr_err("Unknown digest size %d\n", digest_size);
332 }
333 return error;
334 }
335
336 static void chcr_change_order(char *buf, int ds)
337 {
338 int i;
339
340 if (ds == SHA512_DIGEST_SIZE) {
341 for (i = 0; i < (ds / sizeof(u64)); i++)
342 *((__be64 *)buf + i) =
343 cpu_to_be64(*((u64 *)buf + i));
344 } else {
345 for (i = 0; i < (ds / sizeof(u32)); i++)
346 *((__be32 *)buf + i) =
347 cpu_to_be32(*((u32 *)buf + i));
348 }
349 }
350
351 static inline int is_hmac(struct crypto_tfm *tfm)
352 {
353 struct crypto_alg *alg = tfm->__crt_alg;
354 struct chcr_alg_template *chcr_crypto_alg =
355 container_of(__crypto_ahash_alg(alg), struct chcr_alg_template,
356 alg.hash);
357 if (chcr_crypto_alg->type == CRYPTO_ALG_TYPE_HMAC)
358 return 1;
359 return 0;
360 }
361
362 static inline void dsgl_walk_init(struct dsgl_walk *walk,
363 struct cpl_rx_phys_dsgl *dsgl)
364 {
365 walk->dsgl = dsgl;
366 walk->nents = 0;
367 walk->to = (struct phys_sge_pairs *)(dsgl + 1);
368 }
369
370 static inline void dsgl_walk_end(struct dsgl_walk *walk, unsigned short qid)
371 {
372 struct cpl_rx_phys_dsgl *phys_cpl;
373
374 phys_cpl = walk->dsgl;
375
376 phys_cpl->op_to_tid = htonl(CPL_RX_PHYS_DSGL_OPCODE_V(CPL_RX_PHYS_DSGL)
377 | CPL_RX_PHYS_DSGL_ISRDMA_V(0));
378 phys_cpl->pcirlxorder_to_noofsgentr =
379 htonl(CPL_RX_PHYS_DSGL_PCIRLXORDER_V(0) |
380 CPL_RX_PHYS_DSGL_PCINOSNOOP_V(0) |
381 CPL_RX_PHYS_DSGL_PCITPHNTENB_V(0) |
382 CPL_RX_PHYS_DSGL_PCITPHNT_V(0) |
383 CPL_RX_PHYS_DSGL_DCAID_V(0) |
384 CPL_RX_PHYS_DSGL_NOOFSGENTR_V(walk->nents));
385 phys_cpl->rss_hdr_int.opcode = CPL_RX_PHYS_ADDR;
386 phys_cpl->rss_hdr_int.qid = htons(qid);
387 phys_cpl->rss_hdr_int.hash_val = 0;
388 }
389
390 static inline void dsgl_walk_add_page(struct dsgl_walk *walk,
391 size_t size,
392 dma_addr_t *addr)
393 {
394 int j;
395
396 if (!size)
397 return;
398 j = walk->nents;
399 walk->to->len[j % 8] = htons(size);
400 walk->to->addr[j % 8] = cpu_to_be64(*addr);
401 j++;
402 if ((j % 8) == 0)
403 walk->to++;
404 walk->nents = j;
405 }
406
407 static void dsgl_walk_add_sg(struct dsgl_walk *walk,
408 struct scatterlist *sg,
409 unsigned int slen,
410 unsigned int skip)
411 {
412 int skip_len = 0;
413 unsigned int left_size = slen, len = 0;
414 unsigned int j = walk->nents;
415 int offset, ent_len;
416
417 if (!slen)
418 return;
419 while (sg && skip) {
420 if (sg_dma_len(sg) <= skip) {
421 skip -= sg_dma_len(sg);
422 skip_len = 0;
423 sg = sg_next(sg);
424 } else {
425 skip_len = skip;
426 skip = 0;
427 }
428 }
429
430 while (left_size && sg) {
431 len = min_t(u32, left_size, sg_dma_len(sg) - skip_len);
432 offset = 0;
433 while (len) {
434 ent_len = min_t(u32, len, CHCR_DST_SG_SIZE);
435 walk->to->len[j % 8] = htons(ent_len);
436 walk->to->addr[j % 8] = cpu_to_be64(sg_dma_address(sg) +
437 offset + skip_len);
438 offset += ent_len;
439 len -= ent_len;
440 j++;
441 if ((j % 8) == 0)
442 walk->to++;
443 }
444 walk->last_sg = sg;
445 walk->last_sg_len = min_t(u32, left_size, sg_dma_len(sg) -
446 skip_len) + skip_len;
447 left_size -= min_t(u32, left_size, sg_dma_len(sg) - skip_len);
448 skip_len = 0;
449 sg = sg_next(sg);
450 }
451 walk->nents = j;
452 }
453
454 static inline void ulptx_walk_init(struct ulptx_walk *walk,
455 struct ulptx_sgl *ulp)
456 {
457 walk->sgl = ulp;
458 walk->nents = 0;
459 walk->pair_idx = 0;
460 walk->pair = ulp->sge;
461 walk->last_sg = NULL;
462 walk->last_sg_len = 0;
463 }
464
465 static inline void ulptx_walk_end(struct ulptx_walk *walk)
466 {
467 walk->sgl->cmd_nsge = htonl(ULPTX_CMD_V(ULP_TX_SC_DSGL) |
468 ULPTX_NSGE_V(walk->nents));
469 }
470
471
472 static inline void ulptx_walk_add_page(struct ulptx_walk *walk,
473 size_t size,
474 dma_addr_t *addr)
475 {
476 if (!size)
477 return;
478
479 if (walk->nents == 0) {
480 walk->sgl->len0 = cpu_to_be32(size);
481 walk->sgl->addr0 = cpu_to_be64(*addr);
482 } else {
483 walk->pair->addr[walk->pair_idx] = cpu_to_be64(*addr);
484 walk->pair->len[walk->pair_idx] = cpu_to_be32(size);
485 walk->pair_idx = !walk->pair_idx;
486 if (!walk->pair_idx)
487 walk->pair++;
488 }
489 walk->nents++;
490 }
491
492 static void ulptx_walk_add_sg(struct ulptx_walk *walk,
493 struct scatterlist *sg,
494 unsigned int len,
495 unsigned int skip)
496 {
497 int small;
498 int skip_len = 0;
499 unsigned int sgmin;
500
501 if (!len)
502 return;
503 while (sg && skip) {
504 if (sg_dma_len(sg) <= skip) {
505 skip -= sg_dma_len(sg);
506 skip_len = 0;
507 sg = sg_next(sg);
508 } else {
509 skip_len = skip;
510 skip = 0;
511 }
512 }
513 WARN(!sg, "SG should not be null here\n");
514 if (sg && (walk->nents == 0)) {
515 small = min_t(unsigned int, sg_dma_len(sg) - skip_len, len);
516 sgmin = min_t(unsigned int, small, CHCR_SRC_SG_SIZE);
517 walk->sgl->len0 = cpu_to_be32(sgmin);
518 walk->sgl->addr0 = cpu_to_be64(sg_dma_address(sg) + skip_len);
519 walk->nents++;
520 len -= sgmin;
521 walk->last_sg = sg;
522 walk->last_sg_len = sgmin + skip_len;
523 skip_len += sgmin;
524 if (sg_dma_len(sg) == skip_len) {
525 sg = sg_next(sg);
526 skip_len = 0;
527 }
528 }
529
530 while (sg && len) {
531 small = min(sg_dma_len(sg) - skip_len, len);
532 sgmin = min_t(unsigned int, small, CHCR_SRC_SG_SIZE);
533 walk->pair->len[walk->pair_idx] = cpu_to_be32(sgmin);
534 walk->pair->addr[walk->pair_idx] =
535 cpu_to_be64(sg_dma_address(sg) + skip_len);
536 walk->pair_idx = !walk->pair_idx;
537 walk->nents++;
538 if (!walk->pair_idx)
539 walk->pair++;
540 len -= sgmin;
541 skip_len += sgmin;
542 walk->last_sg = sg;
543 walk->last_sg_len = skip_len;
544 if (sg_dma_len(sg) == skip_len) {
545 sg = sg_next(sg);
546 skip_len = 0;
547 }
548 }
549 }
550
551 static inline int get_cryptoalg_subtype(struct crypto_tfm *tfm)
552 {
553 struct crypto_alg *alg = tfm->__crt_alg;
554 struct chcr_alg_template *chcr_crypto_alg =
555 container_of(alg, struct chcr_alg_template, alg.crypto);
556
557 return chcr_crypto_alg->type & CRYPTO_ALG_SUB_TYPE_MASK;
558 }
559
560 static int cxgb4_is_crypto_q_full(struct net_device *dev, unsigned int idx)
561 {
562 struct adapter *adap = netdev2adap(dev);
563 struct sge_uld_txq_info *txq_info =
564 adap->sge.uld_txq_info[CXGB4_TX_CRYPTO];
565 struct sge_uld_txq *txq;
566 int ret = 0;
567
568 local_bh_disable();
569 txq = &txq_info->uldtxq[idx];
570 spin_lock(&txq->sendq.lock);
571 if (txq->full)
572 ret = -1;
573 spin_unlock(&txq->sendq.lock);
574 local_bh_enable();
575 return ret;
576 }
577
578 static int generate_copy_rrkey(struct ablk_ctx *ablkctx,
579 struct _key_ctx *key_ctx)
580 {
581 if (ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC) {
582 memcpy(key_ctx->key, ablkctx->rrkey, ablkctx->enckey_len);
583 } else {
584 memcpy(key_ctx->key,
585 ablkctx->key + (ablkctx->enckey_len >> 1),
586 ablkctx->enckey_len >> 1);
587 memcpy(key_ctx->key + (ablkctx->enckey_len >> 1),
588 ablkctx->rrkey, ablkctx->enckey_len >> 1);
589 }
590 return 0;
591 }
592
593 static int chcr_hash_ent_in_wr(struct scatterlist *src,
594 unsigned int minsg,
595 unsigned int space,
596 unsigned int srcskip)
597 {
598 int srclen = 0;
599 int srcsg = minsg;
600 int soffset = 0, sless;
601
602 if (sg_dma_len(src) == srcskip) {
603 src = sg_next(src);
604 srcskip = 0;
605 }
606 while (src && space > (sgl_ent_len[srcsg + 1])) {
607 sless = min_t(unsigned int, sg_dma_len(src) - soffset - srcskip,
608 CHCR_SRC_SG_SIZE);
609 srclen += sless;
610 soffset += sless;
611 srcsg++;
612 if (sg_dma_len(src) == (soffset + srcskip)) {
613 src = sg_next(src);
614 soffset = 0;
615 srcskip = 0;
616 }
617 }
618 return srclen;
619 }
620
621 static int chcr_sg_ent_in_wr(struct scatterlist *src,
622 struct scatterlist *dst,
623 unsigned int minsg,
624 unsigned int space,
625 unsigned int srcskip,
626 unsigned int dstskip)
627 {
628 int srclen = 0, dstlen = 0;
629 int srcsg = minsg, dstsg = minsg;
630 int offset = 0, soffset = 0, less, sless = 0;
631
632 if (sg_dma_len(src) == srcskip) {
633 src = sg_next(src);
634 srcskip = 0;
635 }
636 if (sg_dma_len(dst) == dstskip) {
637 dst = sg_next(dst);
638 dstskip = 0;
639 }
640
641 while (src && dst &&
642 space > (sgl_ent_len[srcsg + 1] + dsgl_ent_len[dstsg])) {
643 sless = min_t(unsigned int, sg_dma_len(src) - srcskip - soffset,
644 CHCR_SRC_SG_SIZE);
645 srclen += sless;
646 srcsg++;
647 offset = 0;
648 while (dst && ((dstsg + 1) <= MAX_DSGL_ENT) &&
649 space > (sgl_ent_len[srcsg] + dsgl_ent_len[dstsg + 1])) {
650 if (srclen <= dstlen)
651 break;
652 less = min_t(unsigned int, sg_dma_len(dst) - offset -
653 dstskip, CHCR_DST_SG_SIZE);
654 dstlen += less;
655 offset += less;
656 if ((offset + dstskip) == sg_dma_len(dst)) {
657 dst = sg_next(dst);
658 offset = 0;
659 }
660 dstsg++;
661 dstskip = 0;
662 }
663 soffset += sless;
664 if ((soffset + srcskip) == sg_dma_len(src)) {
665 src = sg_next(src);
666 srcskip = 0;
667 soffset = 0;
668 }
669
670 }
671 return min(srclen, dstlen);
672 }
673
674 static int chcr_cipher_fallback(struct crypto_skcipher *cipher,
675 u32 flags,
676 struct scatterlist *src,
677 struct scatterlist *dst,
678 unsigned int nbytes,
679 u8 *iv,
680 unsigned short op_type)
681 {
682 int err;
683
684 SKCIPHER_REQUEST_ON_STACK(subreq, cipher);
685
686 skcipher_request_set_tfm(subreq, cipher);
687 skcipher_request_set_callback(subreq, flags, NULL, NULL);
688 skcipher_request_set_crypt(subreq, src, dst,
689 nbytes, iv);
690
691 err = op_type ? crypto_skcipher_decrypt(subreq) :
692 crypto_skcipher_encrypt(subreq);
693 skcipher_request_zero(subreq);
694
695 return err;
696
697 }
698 static inline void create_wreq(struct chcr_context *ctx,
699 struct chcr_wr *chcr_req,
700 struct crypto_async_request *req,
701 unsigned int imm,
702 int hash_sz,
703 unsigned int len16,
704 unsigned int sc_len,
705 unsigned int lcb)
706 {
707 struct uld_ctx *u_ctx = ULD_CTX(ctx);
708 int qid = u_ctx->lldi.rxq_ids[ctx->rx_qidx];
709
710
711 chcr_req->wreq.op_to_cctx_size = FILL_WR_OP_CCTX_SIZE;
712 chcr_req->wreq.pld_size_hash_size =
713 htonl(FW_CRYPTO_LOOKASIDE_WR_HASH_SIZE_V(hash_sz));
714 chcr_req->wreq.len16_pkd =
715 htonl(FW_CRYPTO_LOOKASIDE_WR_LEN16_V(DIV_ROUND_UP(len16, 16)));
716 chcr_req->wreq.cookie = cpu_to_be64((uintptr_t)req);
717 chcr_req->wreq.rx_chid_to_rx_q_id =
718 FILL_WR_RX_Q_ID(ctx->dev->rx_channel_id, qid,
719 !!lcb, ctx->tx_qidx);
720
721 chcr_req->ulptx.cmd_dest = FILL_ULPTX_CMD_DEST(ctx->dev->tx_channel_id,
722 qid);
723 chcr_req->ulptx.len = htonl((DIV_ROUND_UP(len16, 16) -
724 ((sizeof(chcr_req->wreq)) >> 4)));
725
726 chcr_req->sc_imm.cmd_more = FILL_CMD_MORE(!imm);
727 chcr_req->sc_imm.len = cpu_to_be32(sizeof(struct cpl_tx_sec_pdu) +
728 sizeof(chcr_req->key_ctx) + sc_len);
729 }
730
731 /**
732 * create_cipher_wr - form the WR for cipher operations
733 * @req: cipher req.
734 * @ctx: crypto driver context of the request.
735 * @qid: ingress qid where response of this WR should be received.
736 * @op_type: encryption or decryption
737 */
738 static struct sk_buff *create_cipher_wr(struct cipher_wr_param *wrparam)
739 {
740 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(wrparam->req);
741 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm));
742 struct sk_buff *skb = NULL;
743 struct chcr_wr *chcr_req;
744 struct cpl_rx_phys_dsgl *phys_cpl;
745 struct ulptx_sgl *ulptx;
746 struct chcr_blkcipher_req_ctx *reqctx =
747 ablkcipher_request_ctx(wrparam->req);
748 unsigned int temp = 0, transhdr_len, dst_size;
749 int error;
750 int nents;
751 unsigned int kctx_len;
752 gfp_t flags = wrparam->req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ?
753 GFP_KERNEL : GFP_ATOMIC;
754 struct adapter *adap = padap(c_ctx(tfm)->dev);
755
756 nents = sg_nents_xlen(reqctx->dstsg, wrparam->bytes, CHCR_DST_SG_SIZE,
757 reqctx->dst_ofst);
758 dst_size = get_space_for_phys_dsgl(nents);
759 kctx_len = roundup(ablkctx->enckey_len, 16);
760 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
761 nents = sg_nents_xlen(reqctx->srcsg, wrparam->bytes,
762 CHCR_SRC_SG_SIZE, reqctx->src_ofst);
763 temp = reqctx->imm ? roundup(wrparam->bytes, 16) :
764 (sgl_len(nents) * 8);
765 transhdr_len += temp;
766 transhdr_len = roundup(transhdr_len, 16);
767 skb = alloc_skb(SGE_MAX_WR_LEN, flags);
768 if (!skb) {
769 error = -ENOMEM;
770 goto err;
771 }
772 chcr_req = __skb_put_zero(skb, transhdr_len);
773 chcr_req->sec_cpl.op_ivinsrtofst =
774 FILL_SEC_CPL_OP_IVINSR(c_ctx(tfm)->dev->rx_channel_id, 2, 1);
775
776 chcr_req->sec_cpl.pldlen = htonl(IV + wrparam->bytes);
777 chcr_req->sec_cpl.aadstart_cipherstop_hi =
778 FILL_SEC_CPL_CIPHERSTOP_HI(0, 0, IV + 1, 0);
779
780 chcr_req->sec_cpl.cipherstop_lo_authinsert =
781 FILL_SEC_CPL_AUTHINSERT(0, 0, 0, 0);
782 chcr_req->sec_cpl.seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(reqctx->op, 0,
783 ablkctx->ciph_mode,
784 0, 0, IV >> 1);
785 chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 0,
786 0, 1, dst_size);
787
788 chcr_req->key_ctx.ctx_hdr = ablkctx->key_ctx_hdr;
789 if ((reqctx->op == CHCR_DECRYPT_OP) &&
790 (!(get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) ==
791 CRYPTO_ALG_SUB_TYPE_CTR)) &&
792 (!(get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) ==
793 CRYPTO_ALG_SUB_TYPE_CTR_RFC3686))) {
794 generate_copy_rrkey(ablkctx, &chcr_req->key_ctx);
795 } else {
796 if ((ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC) ||
797 (ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CTR)) {
798 memcpy(chcr_req->key_ctx.key, ablkctx->key,
799 ablkctx->enckey_len);
800 } else {
801 memcpy(chcr_req->key_ctx.key, ablkctx->key +
802 (ablkctx->enckey_len >> 1),
803 ablkctx->enckey_len >> 1);
804 memcpy(chcr_req->key_ctx.key +
805 (ablkctx->enckey_len >> 1),
806 ablkctx->key,
807 ablkctx->enckey_len >> 1);
808 }
809 }
810 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
811 ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size);
812 chcr_add_cipher_src_ent(wrparam->req, ulptx, wrparam);
813 chcr_add_cipher_dst_ent(wrparam->req, phys_cpl, wrparam, wrparam->qid);
814
815 atomic_inc(&adap->chcr_stats.cipher_rqst);
816 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + kctx_len + IV
817 + (reqctx->imm ? (wrparam->bytes) : 0);
818 create_wreq(c_ctx(tfm), chcr_req, &(wrparam->req->base), reqctx->imm, 0,
819 transhdr_len, temp,
820 ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC);
821 reqctx->skb = skb;
822
823 if (reqctx->op && (ablkctx->ciph_mode ==
824 CHCR_SCMD_CIPHER_MODE_AES_CBC))
825 sg_pcopy_to_buffer(wrparam->req->src,
826 sg_nents(wrparam->req->src), wrparam->req->info, 16,
827 reqctx->processed + wrparam->bytes - AES_BLOCK_SIZE);
828
829 return skb;
830 err:
831 return ERR_PTR(error);
832 }
833
834 static inline int chcr_keyctx_ck_size(unsigned int keylen)
835 {
836 int ck_size = 0;
837
838 if (keylen == AES_KEYSIZE_128)
839 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
840 else if (keylen == AES_KEYSIZE_192)
841 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
842 else if (keylen == AES_KEYSIZE_256)
843 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
844 else
845 ck_size = 0;
846
847 return ck_size;
848 }
849 static int chcr_cipher_fallback_setkey(struct crypto_ablkcipher *cipher,
850 const u8 *key,
851 unsigned int keylen)
852 {
853 struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
854 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
855 int err = 0;
856
857 crypto_skcipher_clear_flags(ablkctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
858 crypto_skcipher_set_flags(ablkctx->sw_cipher, cipher->base.crt_flags &
859 CRYPTO_TFM_REQ_MASK);
860 err = crypto_skcipher_setkey(ablkctx->sw_cipher, key, keylen);
861 tfm->crt_flags &= ~CRYPTO_TFM_RES_MASK;
862 tfm->crt_flags |=
863 crypto_skcipher_get_flags(ablkctx->sw_cipher) &
864 CRYPTO_TFM_RES_MASK;
865 return err;
866 }
867
868 static int chcr_aes_cbc_setkey(struct crypto_ablkcipher *cipher,
869 const u8 *key,
870 unsigned int keylen)
871 {
872 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
873 unsigned int ck_size, context_size;
874 u16 alignment = 0;
875 int err;
876
877 err = chcr_cipher_fallback_setkey(cipher, key, keylen);
878 if (err)
879 goto badkey_err;
880
881 ck_size = chcr_keyctx_ck_size(keylen);
882 alignment = ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192 ? 8 : 0;
883 memcpy(ablkctx->key, key, keylen);
884 ablkctx->enckey_len = keylen;
885 get_aes_decrypt_key(ablkctx->rrkey, ablkctx->key, keylen << 3);
886 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD +
887 keylen + alignment) >> 4;
888
889 ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY,
890 0, 0, context_size);
891 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CBC;
892 return 0;
893 badkey_err:
894 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
895 ablkctx->enckey_len = 0;
896
897 return err;
898 }
899
900 static int chcr_aes_ctr_setkey(struct crypto_ablkcipher *cipher,
901 const u8 *key,
902 unsigned int keylen)
903 {
904 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
905 unsigned int ck_size, context_size;
906 u16 alignment = 0;
907 int err;
908
909 err = chcr_cipher_fallback_setkey(cipher, key, keylen);
910 if (err)
911 goto badkey_err;
912 ck_size = chcr_keyctx_ck_size(keylen);
913 alignment = (ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192) ? 8 : 0;
914 memcpy(ablkctx->key, key, keylen);
915 ablkctx->enckey_len = keylen;
916 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD +
917 keylen + alignment) >> 4;
918
919 ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY,
920 0, 0, context_size);
921 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CTR;
922
923 return 0;
924 badkey_err:
925 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
926 ablkctx->enckey_len = 0;
927
928 return err;
929 }
930
931 static int chcr_aes_rfc3686_setkey(struct crypto_ablkcipher *cipher,
932 const u8 *key,
933 unsigned int keylen)
934 {
935 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
936 unsigned int ck_size, context_size;
937 u16 alignment = 0;
938 int err;
939
940 if (keylen < CTR_RFC3686_NONCE_SIZE)
941 return -EINVAL;
942 memcpy(ablkctx->nonce, key + (keylen - CTR_RFC3686_NONCE_SIZE),
943 CTR_RFC3686_NONCE_SIZE);
944
945 keylen -= CTR_RFC3686_NONCE_SIZE;
946 err = chcr_cipher_fallback_setkey(cipher, key, keylen);
947 if (err)
948 goto badkey_err;
949
950 ck_size = chcr_keyctx_ck_size(keylen);
951 alignment = (ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192) ? 8 : 0;
952 memcpy(ablkctx->key, key, keylen);
953 ablkctx->enckey_len = keylen;
954 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD +
955 keylen + alignment) >> 4;
956
957 ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY,
958 0, 0, context_size);
959 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CTR;
960
961 return 0;
962 badkey_err:
963 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
964 ablkctx->enckey_len = 0;
965
966 return err;
967 }
968 static void ctr_add_iv(u8 *dstiv, u8 *srciv, u32 add)
969 {
970 unsigned int size = AES_BLOCK_SIZE;
971 __be32 *b = (__be32 *)(dstiv + size);
972 u32 c, prev;
973
974 memcpy(dstiv, srciv, AES_BLOCK_SIZE);
975 for (; size >= 4; size -= 4) {
976 prev = be32_to_cpu(*--b);
977 c = prev + add;
978 *b = cpu_to_be32(c);
979 if (prev < c)
980 break;
981 add = 1;
982 }
983
984 }
985
986 static unsigned int adjust_ctr_overflow(u8 *iv, u32 bytes)
987 {
988 __be32 *b = (__be32 *)(iv + AES_BLOCK_SIZE);
989 u64 c;
990 u32 temp = be32_to_cpu(*--b);
991
992 temp = ~temp;
993 c = (u64)temp + 1; // No of block can processed withou overflow
994 if ((bytes / AES_BLOCK_SIZE) > c)
995 bytes = c * AES_BLOCK_SIZE;
996 return bytes;
997 }
998
999 static int chcr_update_tweak(struct ablkcipher_request *req, u8 *iv,
1000 u32 isfinal)
1001 {
1002 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
1003 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm));
1004 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
1005 struct crypto_cipher *cipher;
1006 int ret, i;
1007 u8 *key;
1008 unsigned int keylen;
1009 int round = reqctx->last_req_len / AES_BLOCK_SIZE;
1010 int round8 = round / 8;
1011
1012 cipher = ablkctx->aes_generic;
1013 memcpy(iv, reqctx->iv, AES_BLOCK_SIZE);
1014
1015 keylen = ablkctx->enckey_len / 2;
1016 key = ablkctx->key + keylen;
1017 ret = crypto_cipher_setkey(cipher, key, keylen);
1018 if (ret)
1019 goto out;
1020 crypto_cipher_encrypt_one(cipher, iv, iv);
1021 for (i = 0; i < round8; i++)
1022 gf128mul_x8_ble((le128 *)iv, (le128 *)iv);
1023
1024 for (i = 0; i < (round % 8); i++)
1025 gf128mul_x_ble((le128 *)iv, (le128 *)iv);
1026
1027 if (!isfinal)
1028 crypto_cipher_decrypt_one(cipher, iv, iv);
1029 out:
1030 return ret;
1031 }
1032
1033 static int chcr_update_cipher_iv(struct ablkcipher_request *req,
1034 struct cpl_fw6_pld *fw6_pld, u8 *iv)
1035 {
1036 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
1037 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
1038 int subtype = get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm));
1039 int ret = 0;
1040
1041 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR)
1042 ctr_add_iv(iv, req->info, (reqctx->processed /
1043 AES_BLOCK_SIZE));
1044 else if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_RFC3686)
1045 *(__be32 *)(reqctx->iv + CTR_RFC3686_NONCE_SIZE +
1046 CTR_RFC3686_IV_SIZE) = cpu_to_be32((reqctx->processed /
1047 AES_BLOCK_SIZE) + 1);
1048 else if (subtype == CRYPTO_ALG_SUB_TYPE_XTS)
1049 ret = chcr_update_tweak(req, iv, 0);
1050 else if (subtype == CRYPTO_ALG_SUB_TYPE_CBC) {
1051 if (reqctx->op)
1052 /*Updated before sending last WR*/
1053 memcpy(iv, req->info, AES_BLOCK_SIZE);
1054 else
1055 memcpy(iv, &fw6_pld->data[2], AES_BLOCK_SIZE);
1056 }
1057
1058 return ret;
1059
1060 }
1061
1062 /* We need separate function for final iv because in rfc3686 Initial counter
1063 * starts from 1 and buffer size of iv is 8 byte only which remains constant
1064 * for subsequent update requests
1065 */
1066
1067 static int chcr_final_cipher_iv(struct ablkcipher_request *req,
1068 struct cpl_fw6_pld *fw6_pld, u8 *iv)
1069 {
1070 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
1071 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
1072 int subtype = get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm));
1073 int ret = 0;
1074
1075 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR)
1076 ctr_add_iv(iv, req->info, (reqctx->processed /
1077 AES_BLOCK_SIZE));
1078 else if (subtype == CRYPTO_ALG_SUB_TYPE_XTS)
1079 ret = chcr_update_tweak(req, iv, 1);
1080 else if (subtype == CRYPTO_ALG_SUB_TYPE_CBC) {
1081 /*Already updated for Decrypt*/
1082 if (!reqctx->op)
1083 memcpy(iv, &fw6_pld->data[2], AES_BLOCK_SIZE);
1084
1085 }
1086 return ret;
1087
1088 }
1089
1090 static int chcr_handle_cipher_resp(struct ablkcipher_request *req,
1091 unsigned char *input, int err)
1092 {
1093 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
1094 struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm));
1095 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm));
1096 struct sk_buff *skb;
1097 struct cpl_fw6_pld *fw6_pld = (struct cpl_fw6_pld *)input;
1098 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
1099 struct cipher_wr_param wrparam;
1100 int bytes;
1101
1102 if (err)
1103 goto unmap;
1104 if (req->nbytes == reqctx->processed) {
1105 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev,
1106 req);
1107 err = chcr_final_cipher_iv(req, fw6_pld, req->info);
1108 goto complete;
1109 }
1110
1111 if (!reqctx->imm) {
1112 bytes = chcr_sg_ent_in_wr(reqctx->srcsg, reqctx->dstsg, 0,
1113 CIP_SPACE_LEFT(ablkctx->enckey_len),
1114 reqctx->src_ofst, reqctx->dst_ofst);
1115 if ((bytes + reqctx->processed) >= req->nbytes)
1116 bytes = req->nbytes - reqctx->processed;
1117 else
1118 bytes = rounddown(bytes, 16);
1119 } else {
1120 /*CTR mode counter overfloa*/
1121 bytes = req->nbytes - reqctx->processed;
1122 }
1123 err = chcr_update_cipher_iv(req, fw6_pld, reqctx->iv);
1124 if (err)
1125 goto unmap;
1126
1127 if (unlikely(bytes == 0)) {
1128 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev,
1129 req);
1130 err = chcr_cipher_fallback(ablkctx->sw_cipher,
1131 req->base.flags,
1132 req->src,
1133 req->dst,
1134 req->nbytes,
1135 req->info,
1136 reqctx->op);
1137 goto complete;
1138 }
1139
1140 if (get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) ==
1141 CRYPTO_ALG_SUB_TYPE_CTR)
1142 bytes = adjust_ctr_overflow(reqctx->iv, bytes);
1143 wrparam.qid = u_ctx->lldi.rxq_ids[c_ctx(tfm)->rx_qidx];
1144 wrparam.req = req;
1145 wrparam.bytes = bytes;
1146 skb = create_cipher_wr(&wrparam);
1147 if (IS_ERR(skb)) {
1148 pr_err("chcr : %s : Failed to form WR. No memory\n", __func__);
1149 err = PTR_ERR(skb);
1150 goto unmap;
1151 }
1152 skb->dev = u_ctx->lldi.ports[0];
1153 set_wr_txq(skb, CPL_PRIORITY_DATA, c_ctx(tfm)->tx_qidx);
1154 chcr_send_wr(skb);
1155 reqctx->last_req_len = bytes;
1156 reqctx->processed += bytes;
1157 return 0;
1158 unmap:
1159 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req);
1160 complete:
1161 req->base.complete(&req->base, err);
1162 return err;
1163 }
1164
1165 static int process_cipher(struct ablkcipher_request *req,
1166 unsigned short qid,
1167 struct sk_buff **skb,
1168 unsigned short op_type)
1169 {
1170 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
1171 unsigned int ivsize = crypto_ablkcipher_ivsize(tfm);
1172 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
1173 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm));
1174 struct cipher_wr_param wrparam;
1175 int bytes, err = -EINVAL;
1176
1177 reqctx->processed = 0;
1178 if (!req->info)
1179 goto error;
1180 if ((ablkctx->enckey_len == 0) || (ivsize > AES_BLOCK_SIZE) ||
1181 (req->nbytes == 0) ||
1182 (req->nbytes % crypto_ablkcipher_blocksize(tfm))) {
1183 pr_err("AES: Invalid value of Key Len %d nbytes %d IV Len %d\n",
1184 ablkctx->enckey_len, req->nbytes, ivsize);
1185 goto error;
1186 }
1187 chcr_cipher_dma_map(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req);
1188 if (req->nbytes < (SGE_MAX_WR_LEN - (sizeof(struct chcr_wr) +
1189 AES_MIN_KEY_SIZE +
1190 sizeof(struct cpl_rx_phys_dsgl) +
1191 /*Min dsgl size*/
1192 32))) {
1193 /* Can be sent as Imm*/
1194 unsigned int dnents = 0, transhdr_len, phys_dsgl, kctx_len;
1195
1196 dnents = sg_nents_xlen(req->dst, req->nbytes,
1197 CHCR_DST_SG_SIZE, 0);
1198 phys_dsgl = get_space_for_phys_dsgl(dnents);
1199 kctx_len = roundup(ablkctx->enckey_len, 16);
1200 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, phys_dsgl);
1201 reqctx->imm = (transhdr_len + IV + req->nbytes) <=
1202 SGE_MAX_WR_LEN;
1203 bytes = IV + req->nbytes;
1204
1205 } else {
1206 reqctx->imm = 0;
1207 }
1208
1209 if (!reqctx->imm) {
1210 bytes = chcr_sg_ent_in_wr(req->src, req->dst, 0,
1211 CIP_SPACE_LEFT(ablkctx->enckey_len),
1212 0, 0);
1213 if ((bytes + reqctx->processed) >= req->nbytes)
1214 bytes = req->nbytes - reqctx->processed;
1215 else
1216 bytes = rounddown(bytes, 16);
1217 } else {
1218 bytes = req->nbytes;
1219 }
1220 if (get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) ==
1221 CRYPTO_ALG_SUB_TYPE_CTR) {
1222 bytes = adjust_ctr_overflow(req->info, bytes);
1223 }
1224 if (get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) ==
1225 CRYPTO_ALG_SUB_TYPE_CTR_RFC3686) {
1226 memcpy(reqctx->iv, ablkctx->nonce, CTR_RFC3686_NONCE_SIZE);
1227 memcpy(reqctx->iv + CTR_RFC3686_NONCE_SIZE, req->info,
1228 CTR_RFC3686_IV_SIZE);
1229
1230 /* initialize counter portion of counter block */
1231 *(__be32 *)(reqctx->iv + CTR_RFC3686_NONCE_SIZE +
1232 CTR_RFC3686_IV_SIZE) = cpu_to_be32(1);
1233
1234 } else {
1235
1236 memcpy(reqctx->iv, req->info, IV);
1237 }
1238 if (unlikely(bytes == 0)) {
1239 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev,
1240 req);
1241 err = chcr_cipher_fallback(ablkctx->sw_cipher,
1242 req->base.flags,
1243 req->src,
1244 req->dst,
1245 req->nbytes,
1246 reqctx->iv,
1247 op_type);
1248 goto error;
1249 }
1250 reqctx->op = op_type;
1251 reqctx->srcsg = req->src;
1252 reqctx->dstsg = req->dst;
1253 reqctx->src_ofst = 0;
1254 reqctx->dst_ofst = 0;
1255 wrparam.qid = qid;
1256 wrparam.req = req;
1257 wrparam.bytes = bytes;
1258 *skb = create_cipher_wr(&wrparam);
1259 if (IS_ERR(*skb)) {
1260 err = PTR_ERR(*skb);
1261 goto unmap;
1262 }
1263 reqctx->processed = bytes;
1264 reqctx->last_req_len = bytes;
1265
1266 return 0;
1267 unmap:
1268 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req);
1269 error:
1270 return err;
1271 }
1272
1273 static int chcr_aes_encrypt(struct ablkcipher_request *req)
1274 {
1275 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
1276 struct sk_buff *skb = NULL;
1277 int err, isfull = 0;
1278 struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm));
1279
1280 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
1281 c_ctx(tfm)->tx_qidx))) {
1282 isfull = 1;
1283 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
1284 return -ENOSPC;
1285 }
1286
1287 err = process_cipher(req, u_ctx->lldi.rxq_ids[c_ctx(tfm)->rx_qidx],
1288 &skb, CHCR_ENCRYPT_OP);
1289 if (err || !skb)
1290 return err;
1291 skb->dev = u_ctx->lldi.ports[0];
1292 set_wr_txq(skb, CPL_PRIORITY_DATA, c_ctx(tfm)->tx_qidx);
1293 chcr_send_wr(skb);
1294 return isfull ? -EBUSY : -EINPROGRESS;
1295 }
1296
1297 static int chcr_aes_decrypt(struct ablkcipher_request *req)
1298 {
1299 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
1300 struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm));
1301 struct sk_buff *skb = NULL;
1302 int err, isfull = 0;
1303
1304 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
1305 c_ctx(tfm)->tx_qidx))) {
1306 isfull = 1;
1307 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
1308 return -ENOSPC;
1309 }
1310
1311 err = process_cipher(req, u_ctx->lldi.rxq_ids[c_ctx(tfm)->rx_qidx],
1312 &skb, CHCR_DECRYPT_OP);
1313 if (err || !skb)
1314 return err;
1315 skb->dev = u_ctx->lldi.ports[0];
1316 set_wr_txq(skb, CPL_PRIORITY_DATA, c_ctx(tfm)->tx_qidx);
1317 chcr_send_wr(skb);
1318 return isfull ? -EBUSY : -EINPROGRESS;
1319 }
1320
1321 static int chcr_device_init(struct chcr_context *ctx)
1322 {
1323 struct uld_ctx *u_ctx = NULL;
1324 struct adapter *adap;
1325 unsigned int id;
1326 int txq_perchan, txq_idx, ntxq;
1327 int err = 0, rxq_perchan, rxq_idx;
1328
1329 id = smp_processor_id();
1330 if (!ctx->dev) {
1331 u_ctx = assign_chcr_device();
1332 if (!u_ctx) {
1333 pr_err("chcr device assignment fails\n");
1334 goto out;
1335 }
1336 ctx->dev = u_ctx->dev;
1337 adap = padap(ctx->dev);
1338 ntxq = min_not_zero((unsigned int)u_ctx->lldi.nrxq,
1339 adap->vres.ncrypto_fc);
1340 rxq_perchan = u_ctx->lldi.nrxq / u_ctx->lldi.nchan;
1341 txq_perchan = ntxq / u_ctx->lldi.nchan;
1342 rxq_idx = ctx->dev->tx_channel_id * rxq_perchan;
1343 rxq_idx += id % rxq_perchan;
1344 txq_idx = ctx->dev->tx_channel_id * txq_perchan;
1345 txq_idx += id % txq_perchan;
1346 spin_lock(&ctx->dev->lock_chcr_dev);
1347 ctx->rx_qidx = rxq_idx;
1348 ctx->tx_qidx = txq_idx;
1349 ctx->dev->tx_channel_id = !ctx->dev->tx_channel_id;
1350 ctx->dev->rx_channel_id = 0;
1351 spin_unlock(&ctx->dev->lock_chcr_dev);
1352 }
1353 out:
1354 return err;
1355 }
1356
1357 static int chcr_cra_init(struct crypto_tfm *tfm)
1358 {
1359 struct crypto_alg *alg = tfm->__crt_alg;
1360 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
1361 struct ablk_ctx *ablkctx = ABLK_CTX(ctx);
1362
1363 ablkctx->sw_cipher = crypto_alloc_skcipher(alg->cra_name, 0,
1364 CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK);
1365 if (IS_ERR(ablkctx->sw_cipher)) {
1366 pr_err("failed to allocate fallback for %s\n", alg->cra_name);
1367 return PTR_ERR(ablkctx->sw_cipher);
1368 }
1369
1370 if (get_cryptoalg_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_XTS) {
1371 /* To update tweak*/
1372 ablkctx->aes_generic = crypto_alloc_cipher("aes-generic", 0, 0);
1373 if (IS_ERR(ablkctx->aes_generic)) {
1374 pr_err("failed to allocate aes cipher for tweak\n");
1375 return PTR_ERR(ablkctx->aes_generic);
1376 }
1377 } else
1378 ablkctx->aes_generic = NULL;
1379
1380 tfm->crt_ablkcipher.reqsize = sizeof(struct chcr_blkcipher_req_ctx);
1381 return chcr_device_init(crypto_tfm_ctx(tfm));
1382 }
1383
1384 static int chcr_rfc3686_init(struct crypto_tfm *tfm)
1385 {
1386 struct crypto_alg *alg = tfm->__crt_alg;
1387 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
1388 struct ablk_ctx *ablkctx = ABLK_CTX(ctx);
1389
1390 /*RFC3686 initialises IV counter value to 1, rfc3686(ctr(aes))
1391 * cannot be used as fallback in chcr_handle_cipher_response
1392 */
1393 ablkctx->sw_cipher = crypto_alloc_skcipher("ctr(aes)", 0,
1394 CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK);
1395 if (IS_ERR(ablkctx->sw_cipher)) {
1396 pr_err("failed to allocate fallback for %s\n", alg->cra_name);
1397 return PTR_ERR(ablkctx->sw_cipher);
1398 }
1399 tfm->crt_ablkcipher.reqsize = sizeof(struct chcr_blkcipher_req_ctx);
1400 return chcr_device_init(crypto_tfm_ctx(tfm));
1401 }
1402
1403
1404 static void chcr_cra_exit(struct crypto_tfm *tfm)
1405 {
1406 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
1407 struct ablk_ctx *ablkctx = ABLK_CTX(ctx);
1408
1409 crypto_free_skcipher(ablkctx->sw_cipher);
1410 if (ablkctx->aes_generic)
1411 crypto_free_cipher(ablkctx->aes_generic);
1412 }
1413
1414 static int get_alg_config(struct algo_param *params,
1415 unsigned int auth_size)
1416 {
1417 switch (auth_size) {
1418 case SHA1_DIGEST_SIZE:
1419 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_160;
1420 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA1;
1421 params->result_size = SHA1_DIGEST_SIZE;
1422 break;
1423 case SHA224_DIGEST_SIZE:
1424 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256;
1425 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA224;
1426 params->result_size = SHA256_DIGEST_SIZE;
1427 break;
1428 case SHA256_DIGEST_SIZE:
1429 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256;
1430 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA256;
1431 params->result_size = SHA256_DIGEST_SIZE;
1432 break;
1433 case SHA384_DIGEST_SIZE:
1434 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_512;
1435 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA512_384;
1436 params->result_size = SHA512_DIGEST_SIZE;
1437 break;
1438 case SHA512_DIGEST_SIZE:
1439 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_512;
1440 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA512_512;
1441 params->result_size = SHA512_DIGEST_SIZE;
1442 break;
1443 default:
1444 pr_err("chcr : ERROR, unsupported digest size\n");
1445 return -EINVAL;
1446 }
1447 return 0;
1448 }
1449
1450 static inline void chcr_free_shash(struct crypto_shash *base_hash)
1451 {
1452 crypto_free_shash(base_hash);
1453 }
1454
1455 /**
1456 * create_hash_wr - Create hash work request
1457 * @req - Cipher req base
1458 */
1459 static struct sk_buff *create_hash_wr(struct ahash_request *req,
1460 struct hash_wr_param *param)
1461 {
1462 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1463 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
1464 struct hmac_ctx *hmacctx = HMAC_CTX(h_ctx(tfm));
1465 struct sk_buff *skb = NULL;
1466 struct uld_ctx *u_ctx = ULD_CTX(h_ctx(tfm));
1467 struct chcr_wr *chcr_req;
1468 struct ulptx_sgl *ulptx;
1469 unsigned int nents = 0, transhdr_len;
1470 unsigned int temp = 0;
1471 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
1472 GFP_ATOMIC;
1473 struct adapter *adap = padap(h_ctx(tfm)->dev);
1474 int error = 0;
1475
1476 transhdr_len = HASH_TRANSHDR_SIZE(param->kctx_len);
1477 req_ctx->hctx_wr.imm = (transhdr_len + param->bfr_len +
1478 param->sg_len) <= SGE_MAX_WR_LEN;
1479 nents = sg_nents_xlen(req_ctx->hctx_wr.srcsg, param->sg_len,
1480 CHCR_SRC_SG_SIZE, req_ctx->hctx_wr.src_ofst);
1481 nents += param->bfr_len ? 1 : 0;
1482 transhdr_len += req_ctx->hctx_wr.imm ? roundup(param->bfr_len +
1483 param->sg_len, 16) : (sgl_len(nents) * 8);
1484 transhdr_len = roundup(transhdr_len, 16);
1485
1486 skb = alloc_skb(transhdr_len, flags);
1487 if (!skb)
1488 return ERR_PTR(-ENOMEM);
1489 chcr_req = __skb_put_zero(skb, transhdr_len);
1490
1491 chcr_req->sec_cpl.op_ivinsrtofst =
1492 FILL_SEC_CPL_OP_IVINSR(h_ctx(tfm)->dev->rx_channel_id, 2, 0);
1493 chcr_req->sec_cpl.pldlen = htonl(param->bfr_len + param->sg_len);
1494
1495 chcr_req->sec_cpl.aadstart_cipherstop_hi =
1496 FILL_SEC_CPL_CIPHERSTOP_HI(0, 0, 0, 0);
1497 chcr_req->sec_cpl.cipherstop_lo_authinsert =
1498 FILL_SEC_CPL_AUTHINSERT(0, 1, 0, 0);
1499 chcr_req->sec_cpl.seqno_numivs =
1500 FILL_SEC_CPL_SCMD0_SEQNO(0, 0, 0, param->alg_prm.auth_mode,
1501 param->opad_needed, 0);
1502
1503 chcr_req->sec_cpl.ivgen_hdrlen =
1504 FILL_SEC_CPL_IVGEN_HDRLEN(param->last, param->more, 0, 1, 0, 0);
1505
1506 memcpy(chcr_req->key_ctx.key, req_ctx->partial_hash,
1507 param->alg_prm.result_size);
1508
1509 if (param->opad_needed)
1510 memcpy(chcr_req->key_ctx.key +
1511 ((param->alg_prm.result_size <= 32) ? 32 :
1512 CHCR_HASH_MAX_DIGEST_SIZE),
1513 hmacctx->opad, param->alg_prm.result_size);
1514
1515 chcr_req->key_ctx.ctx_hdr = FILL_KEY_CTX_HDR(CHCR_KEYCTX_NO_KEY,
1516 param->alg_prm.mk_size, 0,
1517 param->opad_needed,
1518 ((param->kctx_len +
1519 sizeof(chcr_req->key_ctx)) >> 4));
1520 chcr_req->sec_cpl.scmd1 = cpu_to_be64((u64)param->scmd1);
1521 ulptx = (struct ulptx_sgl *)((u8 *)(chcr_req + 1) + param->kctx_len +
1522 DUMMY_BYTES);
1523 if (param->bfr_len != 0) {
1524 req_ctx->hctx_wr.dma_addr =
1525 dma_map_single(&u_ctx->lldi.pdev->dev, req_ctx->reqbfr,
1526 param->bfr_len, DMA_TO_DEVICE);
1527 if (dma_mapping_error(&u_ctx->lldi.pdev->dev,
1528 req_ctx->hctx_wr. dma_addr)) {
1529 error = -ENOMEM;
1530 goto err;
1531 }
1532 req_ctx->hctx_wr.dma_len = param->bfr_len;
1533 } else {
1534 req_ctx->hctx_wr.dma_addr = 0;
1535 }
1536 chcr_add_hash_src_ent(req, ulptx, param);
1537 /* Request upto max wr size */
1538 temp = param->kctx_len + DUMMY_BYTES + (req_ctx->hctx_wr.imm ?
1539 (param->sg_len + param->bfr_len) : 0);
1540 atomic_inc(&adap->chcr_stats.digest_rqst);
1541 create_wreq(h_ctx(tfm), chcr_req, &req->base, req_ctx->hctx_wr.imm,
1542 param->hash_size, transhdr_len,
1543 temp, 0);
1544 req_ctx->hctx_wr.skb = skb;
1545 return skb;
1546 err:
1547 kfree_skb(skb);
1548 return ERR_PTR(error);
1549 }
1550
1551 static int chcr_ahash_update(struct ahash_request *req)
1552 {
1553 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1554 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
1555 struct uld_ctx *u_ctx = NULL;
1556 struct sk_buff *skb;
1557 u8 remainder = 0, bs;
1558 unsigned int nbytes = req->nbytes;
1559 struct hash_wr_param params;
1560 int error, isfull = 0;
1561
1562 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1563 u_ctx = ULD_CTX(h_ctx(rtfm));
1564 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
1565 h_ctx(rtfm)->tx_qidx))) {
1566 isfull = 1;
1567 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
1568 return -ENOSPC;
1569 }
1570
1571 if (nbytes + req_ctx->reqlen >= bs) {
1572 remainder = (nbytes + req_ctx->reqlen) % bs;
1573 nbytes = nbytes + req_ctx->reqlen - remainder;
1574 } else {
1575 sg_pcopy_to_buffer(req->src, sg_nents(req->src), req_ctx->reqbfr
1576 + req_ctx->reqlen, nbytes, 0);
1577 req_ctx->reqlen += nbytes;
1578 return 0;
1579 }
1580 chcr_init_hctx_per_wr(req_ctx);
1581 error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req);
1582 if (error)
1583 return -ENOMEM;
1584 get_alg_config(&params.alg_prm, crypto_ahash_digestsize(rtfm));
1585 params.kctx_len = roundup(params.alg_prm.result_size, 16);
1586 params.sg_len = chcr_hash_ent_in_wr(req->src, !!req_ctx->reqlen,
1587 HASH_SPACE_LEFT(params.kctx_len), 0);
1588 if (params.sg_len > req->nbytes)
1589 params.sg_len = req->nbytes;
1590 params.sg_len = rounddown(params.sg_len + req_ctx->reqlen, bs) -
1591 req_ctx->reqlen;
1592 params.opad_needed = 0;
1593 params.more = 1;
1594 params.last = 0;
1595 params.bfr_len = req_ctx->reqlen;
1596 params.scmd1 = 0;
1597 req_ctx->hctx_wr.srcsg = req->src;
1598
1599 params.hash_size = params.alg_prm.result_size;
1600 req_ctx->data_len += params.sg_len + params.bfr_len;
1601 skb = create_hash_wr(req, &params);
1602 if (IS_ERR(skb)) {
1603 error = PTR_ERR(skb);
1604 goto unmap;
1605 }
1606
1607 req_ctx->hctx_wr.processed += params.sg_len;
1608 if (remainder) {
1609 /* Swap buffers */
1610 swap(req_ctx->reqbfr, req_ctx->skbfr);
1611 sg_pcopy_to_buffer(req->src, sg_nents(req->src),
1612 req_ctx->reqbfr, remainder, req->nbytes -
1613 remainder);
1614 }
1615 req_ctx->reqlen = remainder;
1616 skb->dev = u_ctx->lldi.ports[0];
1617 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx);
1618 chcr_send_wr(skb);
1619
1620 return isfull ? -EBUSY : -EINPROGRESS;
1621 unmap:
1622 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
1623 return error;
1624 }
1625
1626 static void create_last_hash_block(char *bfr_ptr, unsigned int bs, u64 scmd1)
1627 {
1628 memset(bfr_ptr, 0, bs);
1629 *bfr_ptr = 0x80;
1630 if (bs == 64)
1631 *(__be64 *)(bfr_ptr + 56) = cpu_to_be64(scmd1 << 3);
1632 else
1633 *(__be64 *)(bfr_ptr + 120) = cpu_to_be64(scmd1 << 3);
1634 }
1635
1636 static int chcr_ahash_final(struct ahash_request *req)
1637 {
1638 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1639 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
1640 struct hash_wr_param params;
1641 struct sk_buff *skb;
1642 struct uld_ctx *u_ctx = NULL;
1643 u8 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1644
1645 chcr_init_hctx_per_wr(req_ctx);
1646 u_ctx = ULD_CTX(h_ctx(rtfm));
1647 if (is_hmac(crypto_ahash_tfm(rtfm)))
1648 params.opad_needed = 1;
1649 else
1650 params.opad_needed = 0;
1651 params.sg_len = 0;
1652 req_ctx->hctx_wr.isfinal = 1;
1653 get_alg_config(&params.alg_prm, crypto_ahash_digestsize(rtfm));
1654 params.kctx_len = roundup(params.alg_prm.result_size, 16);
1655 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1656 params.opad_needed = 1;
1657 params.kctx_len *= 2;
1658 } else {
1659 params.opad_needed = 0;
1660 }
1661
1662 req_ctx->hctx_wr.result = 1;
1663 params.bfr_len = req_ctx->reqlen;
1664 req_ctx->data_len += params.bfr_len + params.sg_len;
1665 req_ctx->hctx_wr.srcsg = req->src;
1666 if (req_ctx->reqlen == 0) {
1667 create_last_hash_block(req_ctx->reqbfr, bs, req_ctx->data_len);
1668 params.last = 0;
1669 params.more = 1;
1670 params.scmd1 = 0;
1671 params.bfr_len = bs;
1672
1673 } else {
1674 params.scmd1 = req_ctx->data_len;
1675 params.last = 1;
1676 params.more = 0;
1677 }
1678 params.hash_size = crypto_ahash_digestsize(rtfm);
1679 skb = create_hash_wr(req, &params);
1680 if (IS_ERR(skb))
1681 return PTR_ERR(skb);
1682 req_ctx->reqlen = 0;
1683 skb->dev = u_ctx->lldi.ports[0];
1684 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx);
1685 chcr_send_wr(skb);
1686 return -EINPROGRESS;
1687 }
1688
1689 static int chcr_ahash_finup(struct ahash_request *req)
1690 {
1691 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1692 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
1693 struct uld_ctx *u_ctx = NULL;
1694 struct sk_buff *skb;
1695 struct hash_wr_param params;
1696 u8 bs;
1697 int error, isfull = 0;
1698
1699 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1700 u_ctx = ULD_CTX(h_ctx(rtfm));
1701
1702 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
1703 h_ctx(rtfm)->tx_qidx))) {
1704 isfull = 1;
1705 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
1706 return -ENOSPC;
1707 }
1708 chcr_init_hctx_per_wr(req_ctx);
1709 error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req);
1710 if (error)
1711 return -ENOMEM;
1712
1713 get_alg_config(&params.alg_prm, crypto_ahash_digestsize(rtfm));
1714 params.kctx_len = roundup(params.alg_prm.result_size, 16);
1715 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1716 params.kctx_len *= 2;
1717 params.opad_needed = 1;
1718 } else {
1719 params.opad_needed = 0;
1720 }
1721
1722 params.sg_len = chcr_hash_ent_in_wr(req->src, !!req_ctx->reqlen,
1723 HASH_SPACE_LEFT(params.kctx_len), 0);
1724 if (params.sg_len < req->nbytes) {
1725 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1726 params.kctx_len /= 2;
1727 params.opad_needed = 0;
1728 }
1729 params.last = 0;
1730 params.more = 1;
1731 params.sg_len = rounddown(params.sg_len + req_ctx->reqlen, bs)
1732 - req_ctx->reqlen;
1733 params.hash_size = params.alg_prm.result_size;
1734 params.scmd1 = 0;
1735 } else {
1736 params.last = 1;
1737 params.more = 0;
1738 params.sg_len = req->nbytes;
1739 params.hash_size = crypto_ahash_digestsize(rtfm);
1740 params.scmd1 = req_ctx->data_len + req_ctx->reqlen +
1741 params.sg_len;
1742 }
1743 params.bfr_len = req_ctx->reqlen;
1744 req_ctx->data_len += params.bfr_len + params.sg_len;
1745 req_ctx->hctx_wr.result = 1;
1746 req_ctx->hctx_wr.srcsg = req->src;
1747 if ((req_ctx->reqlen + req->nbytes) == 0) {
1748 create_last_hash_block(req_ctx->reqbfr, bs, req_ctx->data_len);
1749 params.last = 0;
1750 params.more = 1;
1751 params.scmd1 = 0;
1752 params.bfr_len = bs;
1753 }
1754 skb = create_hash_wr(req, &params);
1755 if (IS_ERR(skb)) {
1756 error = PTR_ERR(skb);
1757 goto unmap;
1758 }
1759 req_ctx->reqlen = 0;
1760 req_ctx->hctx_wr.processed += params.sg_len;
1761 skb->dev = u_ctx->lldi.ports[0];
1762 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx);
1763 chcr_send_wr(skb);
1764
1765 return isfull ? -EBUSY : -EINPROGRESS;
1766 unmap:
1767 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
1768 return error;
1769 }
1770
1771 static int chcr_ahash_digest(struct ahash_request *req)
1772 {
1773 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1774 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
1775 struct uld_ctx *u_ctx = NULL;
1776 struct sk_buff *skb;
1777 struct hash_wr_param params;
1778 u8 bs;
1779 int error, isfull = 0;
1780
1781 rtfm->init(req);
1782 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1783
1784 u_ctx = ULD_CTX(h_ctx(rtfm));
1785 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
1786 h_ctx(rtfm)->tx_qidx))) {
1787 isfull = 1;
1788 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
1789 return -ENOSPC;
1790 }
1791
1792 chcr_init_hctx_per_wr(req_ctx);
1793 error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req);
1794 if (error)
1795 return -ENOMEM;
1796
1797 get_alg_config(&params.alg_prm, crypto_ahash_digestsize(rtfm));
1798 params.kctx_len = roundup(params.alg_prm.result_size, 16);
1799 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1800 params.kctx_len *= 2;
1801 params.opad_needed = 1;
1802 } else {
1803 params.opad_needed = 0;
1804 }
1805 params.sg_len = chcr_hash_ent_in_wr(req->src, !!req_ctx->reqlen,
1806 HASH_SPACE_LEFT(params.kctx_len), 0);
1807 if (params.sg_len < req->nbytes) {
1808 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1809 params.kctx_len /= 2;
1810 params.opad_needed = 0;
1811 }
1812 params.last = 0;
1813 params.more = 1;
1814 params.scmd1 = 0;
1815 params.sg_len = rounddown(params.sg_len, bs);
1816 params.hash_size = params.alg_prm.result_size;
1817 } else {
1818 params.sg_len = req->nbytes;
1819 params.hash_size = crypto_ahash_digestsize(rtfm);
1820 params.last = 1;
1821 params.more = 0;
1822 params.scmd1 = req->nbytes + req_ctx->data_len;
1823
1824 }
1825 params.bfr_len = 0;
1826 req_ctx->hctx_wr.result = 1;
1827 req_ctx->hctx_wr.srcsg = req->src;
1828 req_ctx->data_len += params.bfr_len + params.sg_len;
1829
1830 if (req->nbytes == 0) {
1831 create_last_hash_block(req_ctx->reqbfr, bs, 0);
1832 params.more = 1;
1833 params.bfr_len = bs;
1834 }
1835
1836 skb = create_hash_wr(req, &params);
1837 if (IS_ERR(skb)) {
1838 error = PTR_ERR(skb);
1839 goto unmap;
1840 }
1841 req_ctx->hctx_wr.processed += params.sg_len;
1842 skb->dev = u_ctx->lldi.ports[0];
1843 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx);
1844 chcr_send_wr(skb);
1845 return isfull ? -EBUSY : -EINPROGRESS;
1846 unmap:
1847 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
1848 return error;
1849 }
1850
1851 static int chcr_ahash_continue(struct ahash_request *req)
1852 {
1853 struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req);
1854 struct chcr_hctx_per_wr *hctx_wr = &reqctx->hctx_wr;
1855 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
1856 struct uld_ctx *u_ctx = NULL;
1857 struct sk_buff *skb;
1858 struct hash_wr_param params;
1859 u8 bs;
1860 int error;
1861
1862 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1863 u_ctx = ULD_CTX(h_ctx(rtfm));
1864 get_alg_config(&params.alg_prm, crypto_ahash_digestsize(rtfm));
1865 params.kctx_len = roundup(params.alg_prm.result_size, 16);
1866 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1867 params.kctx_len *= 2;
1868 params.opad_needed = 1;
1869 } else {
1870 params.opad_needed = 0;
1871 }
1872 params.sg_len = chcr_hash_ent_in_wr(hctx_wr->srcsg, 0,
1873 HASH_SPACE_LEFT(params.kctx_len),
1874 hctx_wr->src_ofst);
1875 if ((params.sg_len + hctx_wr->processed) > req->nbytes)
1876 params.sg_len = req->nbytes - hctx_wr->processed;
1877 if (!hctx_wr->result ||
1878 ((params.sg_len + hctx_wr->processed) < req->nbytes)) {
1879 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1880 params.kctx_len /= 2;
1881 params.opad_needed = 0;
1882 }
1883 params.last = 0;
1884 params.more = 1;
1885 params.sg_len = rounddown(params.sg_len, bs);
1886 params.hash_size = params.alg_prm.result_size;
1887 params.scmd1 = 0;
1888 } else {
1889 params.last = 1;
1890 params.more = 0;
1891 params.hash_size = crypto_ahash_digestsize(rtfm);
1892 params.scmd1 = reqctx->data_len + params.sg_len;
1893 }
1894 params.bfr_len = 0;
1895 reqctx->data_len += params.sg_len;
1896 skb = create_hash_wr(req, &params);
1897 if (IS_ERR(skb)) {
1898 error = PTR_ERR(skb);
1899 goto err;
1900 }
1901 hctx_wr->processed += params.sg_len;
1902 skb->dev = u_ctx->lldi.ports[0];
1903 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx);
1904 chcr_send_wr(skb);
1905 return 0;
1906 err:
1907 return error;
1908 }
1909
1910 static inline void chcr_handle_ahash_resp(struct ahash_request *req,
1911 unsigned char *input,
1912 int err)
1913 {
1914 struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req);
1915 struct chcr_hctx_per_wr *hctx_wr = &reqctx->hctx_wr;
1916 int digestsize, updated_digestsize;
1917 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
1918 struct uld_ctx *u_ctx = ULD_CTX(h_ctx(tfm));
1919
1920 if (input == NULL)
1921 goto out;
1922 digestsize = crypto_ahash_digestsize(crypto_ahash_reqtfm(req));
1923 updated_digestsize = digestsize;
1924 if (digestsize == SHA224_DIGEST_SIZE)
1925 updated_digestsize = SHA256_DIGEST_SIZE;
1926 else if (digestsize == SHA384_DIGEST_SIZE)
1927 updated_digestsize = SHA512_DIGEST_SIZE;
1928
1929 if (hctx_wr->dma_addr) {
1930 dma_unmap_single(&u_ctx->lldi.pdev->dev, hctx_wr->dma_addr,
1931 hctx_wr->dma_len, DMA_TO_DEVICE);
1932 hctx_wr->dma_addr = 0;
1933 }
1934 if (hctx_wr->isfinal || ((hctx_wr->processed + reqctx->reqlen) ==
1935 req->nbytes)) {
1936 if (hctx_wr->result == 1) {
1937 hctx_wr->result = 0;
1938 memcpy(req->result, input + sizeof(struct cpl_fw6_pld),
1939 digestsize);
1940 } else {
1941 memcpy(reqctx->partial_hash,
1942 input + sizeof(struct cpl_fw6_pld),
1943 updated_digestsize);
1944
1945 }
1946 goto unmap;
1947 }
1948 memcpy(reqctx->partial_hash, input + sizeof(struct cpl_fw6_pld),
1949 updated_digestsize);
1950
1951 err = chcr_ahash_continue(req);
1952 if (err)
1953 goto unmap;
1954 return;
1955 unmap:
1956 if (hctx_wr->is_sg_map)
1957 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
1958
1959
1960 out:
1961 req->base.complete(&req->base, err);
1962 }
1963
1964 /*
1965 * chcr_handle_resp - Unmap the DMA buffers associated with the request
1966 * @req: crypto request
1967 */
1968 int chcr_handle_resp(struct crypto_async_request *req, unsigned char *input,
1969 int err)
1970 {
1971 struct crypto_tfm *tfm = req->tfm;
1972 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
1973 struct adapter *adap = padap(ctx->dev);
1974
1975 switch (tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK) {
1976 case CRYPTO_ALG_TYPE_AEAD:
1977 chcr_handle_aead_resp(aead_request_cast(req), input, err);
1978 break;
1979
1980 case CRYPTO_ALG_TYPE_ABLKCIPHER:
1981 err = chcr_handle_cipher_resp(ablkcipher_request_cast(req),
1982 input, err);
1983 break;
1984
1985 case CRYPTO_ALG_TYPE_AHASH:
1986 chcr_handle_ahash_resp(ahash_request_cast(req), input, err);
1987 }
1988 atomic_inc(&adap->chcr_stats.complete);
1989 return err;
1990 }
1991 static int chcr_ahash_export(struct ahash_request *areq, void *out)
1992 {
1993 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
1994 struct chcr_ahash_req_ctx *state = out;
1995
1996 state->reqlen = req_ctx->reqlen;
1997 state->data_len = req_ctx->data_len;
1998 memcpy(state->bfr1, req_ctx->reqbfr, req_ctx->reqlen);
1999 memcpy(state->partial_hash, req_ctx->partial_hash,
2000 CHCR_HASH_MAX_DIGEST_SIZE);
2001 chcr_init_hctx_per_wr(state);
2002 return 0;
2003 }
2004
2005 static int chcr_ahash_import(struct ahash_request *areq, const void *in)
2006 {
2007 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
2008 struct chcr_ahash_req_ctx *state = (struct chcr_ahash_req_ctx *)in;
2009
2010 req_ctx->reqlen = state->reqlen;
2011 req_ctx->data_len = state->data_len;
2012 req_ctx->reqbfr = req_ctx->bfr1;
2013 req_ctx->skbfr = req_ctx->bfr2;
2014 memcpy(req_ctx->bfr1, state->bfr1, CHCR_HASH_MAX_BLOCK_SIZE_128);
2015 memcpy(req_ctx->partial_hash, state->partial_hash,
2016 CHCR_HASH_MAX_DIGEST_SIZE);
2017 chcr_init_hctx_per_wr(req_ctx);
2018 return 0;
2019 }
2020
2021 static int chcr_ahash_setkey(struct crypto_ahash *tfm, const u8 *key,
2022 unsigned int keylen)
2023 {
2024 struct hmac_ctx *hmacctx = HMAC_CTX(h_ctx(tfm));
2025 unsigned int digestsize = crypto_ahash_digestsize(tfm);
2026 unsigned int bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm));
2027 unsigned int i, err = 0, updated_digestsize;
2028
2029 SHASH_DESC_ON_STACK(shash, hmacctx->base_hash);
2030
2031 /* use the key to calculate the ipad and opad. ipad will sent with the
2032 * first request's data. opad will be sent with the final hash result
2033 * ipad in hmacctx->ipad and opad in hmacctx->opad location
2034 */
2035 shash->tfm = hmacctx->base_hash;
2036 shash->flags = crypto_shash_get_flags(hmacctx->base_hash);
2037 if (keylen > bs) {
2038 err = crypto_shash_digest(shash, key, keylen,
2039 hmacctx->ipad);
2040 if (err)
2041 goto out;
2042 keylen = digestsize;
2043 } else {
2044 memcpy(hmacctx->ipad, key, keylen);
2045 }
2046 memset(hmacctx->ipad + keylen, 0, bs - keylen);
2047 memcpy(hmacctx->opad, hmacctx->ipad, bs);
2048
2049 for (i = 0; i < bs / sizeof(int); i++) {
2050 *((unsigned int *)(&hmacctx->ipad) + i) ^= IPAD_DATA;
2051 *((unsigned int *)(&hmacctx->opad) + i) ^= OPAD_DATA;
2052 }
2053
2054 updated_digestsize = digestsize;
2055 if (digestsize == SHA224_DIGEST_SIZE)
2056 updated_digestsize = SHA256_DIGEST_SIZE;
2057 else if (digestsize == SHA384_DIGEST_SIZE)
2058 updated_digestsize = SHA512_DIGEST_SIZE;
2059 err = chcr_compute_partial_hash(shash, hmacctx->ipad,
2060 hmacctx->ipad, digestsize);
2061 if (err)
2062 goto out;
2063 chcr_change_order(hmacctx->ipad, updated_digestsize);
2064
2065 err = chcr_compute_partial_hash(shash, hmacctx->opad,
2066 hmacctx->opad, digestsize);
2067 if (err)
2068 goto out;
2069 chcr_change_order(hmacctx->opad, updated_digestsize);
2070 out:
2071 return err;
2072 }
2073
2074 static int chcr_aes_xts_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
2075 unsigned int key_len)
2076 {
2077 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
2078 unsigned short context_size = 0;
2079 int err;
2080
2081 err = chcr_cipher_fallback_setkey(cipher, key, key_len);
2082 if (err)
2083 goto badkey_err;
2084
2085 memcpy(ablkctx->key, key, key_len);
2086 ablkctx->enckey_len = key_len;
2087 get_aes_decrypt_key(ablkctx->rrkey, ablkctx->key, key_len << 2);
2088 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD + key_len) >> 4;
2089 ablkctx->key_ctx_hdr =
2090 FILL_KEY_CTX_HDR((key_len == AES_KEYSIZE_256) ?
2091 CHCR_KEYCTX_CIPHER_KEY_SIZE_128 :
2092 CHCR_KEYCTX_CIPHER_KEY_SIZE_256,
2093 CHCR_KEYCTX_NO_KEY, 1,
2094 0, context_size);
2095 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_XTS;
2096 return 0;
2097 badkey_err:
2098 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
2099 ablkctx->enckey_len = 0;
2100
2101 return err;
2102 }
2103
2104 static int chcr_sha_init(struct ahash_request *areq)
2105 {
2106 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
2107 struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
2108 int digestsize = crypto_ahash_digestsize(tfm);
2109
2110 req_ctx->data_len = 0;
2111 req_ctx->reqlen = 0;
2112 req_ctx->reqbfr = req_ctx->bfr1;
2113 req_ctx->skbfr = req_ctx->bfr2;
2114 copy_hash_init_values(req_ctx->partial_hash, digestsize);
2115
2116 return 0;
2117 }
2118
2119 static int chcr_sha_cra_init(struct crypto_tfm *tfm)
2120 {
2121 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
2122 sizeof(struct chcr_ahash_req_ctx));
2123 return chcr_device_init(crypto_tfm_ctx(tfm));
2124 }
2125
2126 static int chcr_hmac_init(struct ahash_request *areq)
2127 {
2128 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
2129 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(areq);
2130 struct hmac_ctx *hmacctx = HMAC_CTX(h_ctx(rtfm));
2131 unsigned int digestsize = crypto_ahash_digestsize(rtfm);
2132 unsigned int bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
2133
2134 chcr_sha_init(areq);
2135 req_ctx->data_len = bs;
2136 if (is_hmac(crypto_ahash_tfm(rtfm))) {
2137 if (digestsize == SHA224_DIGEST_SIZE)
2138 memcpy(req_ctx->partial_hash, hmacctx->ipad,
2139 SHA256_DIGEST_SIZE);
2140 else if (digestsize == SHA384_DIGEST_SIZE)
2141 memcpy(req_ctx->partial_hash, hmacctx->ipad,
2142 SHA512_DIGEST_SIZE);
2143 else
2144 memcpy(req_ctx->partial_hash, hmacctx->ipad,
2145 digestsize);
2146 }
2147 return 0;
2148 }
2149
2150 static int chcr_hmac_cra_init(struct crypto_tfm *tfm)
2151 {
2152 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
2153 struct hmac_ctx *hmacctx = HMAC_CTX(ctx);
2154 unsigned int digestsize =
2155 crypto_ahash_digestsize(__crypto_ahash_cast(tfm));
2156
2157 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
2158 sizeof(struct chcr_ahash_req_ctx));
2159 hmacctx->base_hash = chcr_alloc_shash(digestsize);
2160 if (IS_ERR(hmacctx->base_hash))
2161 return PTR_ERR(hmacctx->base_hash);
2162 return chcr_device_init(crypto_tfm_ctx(tfm));
2163 }
2164
2165 static void chcr_hmac_cra_exit(struct crypto_tfm *tfm)
2166 {
2167 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
2168 struct hmac_ctx *hmacctx = HMAC_CTX(ctx);
2169
2170 if (hmacctx->base_hash) {
2171 chcr_free_shash(hmacctx->base_hash);
2172 hmacctx->base_hash = NULL;
2173 }
2174 }
2175
2176 inline void chcr_aead_common_exit(struct aead_request *req)
2177 {
2178 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2179 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2180 struct uld_ctx *u_ctx = ULD_CTX(a_ctx(tfm));
2181
2182 chcr_aead_dma_unmap(&u_ctx->lldi.pdev->dev, req, reqctx->op);
2183 }
2184
2185 static int chcr_aead_common_init(struct aead_request *req)
2186 {
2187 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2188 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2189 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2190 unsigned int authsize = crypto_aead_authsize(tfm);
2191 int error = -EINVAL;
2192
2193 /* validate key size */
2194 if (aeadctx->enckey_len == 0)
2195 goto err;
2196 if (reqctx->op && req->cryptlen < authsize)
2197 goto err;
2198 if (reqctx->b0_len)
2199 reqctx->scratch_pad = reqctx->iv + IV;
2200 else
2201 reqctx->scratch_pad = NULL;
2202
2203 error = chcr_aead_dma_map(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev, req,
2204 reqctx->op);
2205 if (error) {
2206 error = -ENOMEM;
2207 goto err;
2208 }
2209 reqctx->aad_nents = sg_nents_xlen(req->src, req->assoclen,
2210 CHCR_SRC_SG_SIZE, 0);
2211 reqctx->src_nents = sg_nents_xlen(req->src, req->cryptlen,
2212 CHCR_SRC_SG_SIZE, req->assoclen);
2213 return 0;
2214 err:
2215 return error;
2216 }
2217
2218 static int chcr_aead_need_fallback(struct aead_request *req, int dst_nents,
2219 int aadmax, int wrlen,
2220 unsigned short op_type)
2221 {
2222 unsigned int authsize = crypto_aead_authsize(crypto_aead_reqtfm(req));
2223
2224 if (((req->cryptlen - (op_type ? authsize : 0)) == 0) ||
2225 dst_nents > MAX_DSGL_ENT ||
2226 (req->assoclen > aadmax) ||
2227 (wrlen > SGE_MAX_WR_LEN))
2228 return 1;
2229 return 0;
2230 }
2231
2232 static int chcr_aead_fallback(struct aead_request *req, unsigned short op_type)
2233 {
2234 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2235 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2236 struct aead_request *subreq = aead_request_ctx(req);
2237
2238 aead_request_set_tfm(subreq, aeadctx->sw_cipher);
2239 aead_request_set_callback(subreq, req->base.flags,
2240 req->base.complete, req->base.data);
2241 aead_request_set_crypt(subreq, req->src, req->dst, req->cryptlen,
2242 req->iv);
2243 aead_request_set_ad(subreq, req->assoclen);
2244 return op_type ? crypto_aead_decrypt(subreq) :
2245 crypto_aead_encrypt(subreq);
2246 }
2247
2248 static struct sk_buff *create_authenc_wr(struct aead_request *req,
2249 unsigned short qid,
2250 int size)
2251 {
2252 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2253 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2254 struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx);
2255 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2256 struct sk_buff *skb = NULL;
2257 struct chcr_wr *chcr_req;
2258 struct cpl_rx_phys_dsgl *phys_cpl;
2259 struct ulptx_sgl *ulptx;
2260 unsigned int transhdr_len;
2261 unsigned int dst_size = 0, temp, subtype = get_aead_subtype(tfm);
2262 unsigned int kctx_len = 0, dnents;
2263 unsigned int assoclen = req->assoclen;
2264 unsigned int authsize = crypto_aead_authsize(tfm);
2265 int error = -EINVAL;
2266 int null = 0;
2267 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
2268 GFP_ATOMIC;
2269 struct adapter *adap = padap(a_ctx(tfm)->dev);
2270
2271 if (req->cryptlen == 0)
2272 return NULL;
2273
2274 reqctx->b0_len = 0;
2275 error = chcr_aead_common_init(req);
2276 if (error)
2277 return ERR_PTR(error);
2278
2279 if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL ||
2280 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
2281 null = 1;
2282 assoclen = 0;
2283 reqctx->aad_nents = 0;
2284 }
2285 dnents = sg_nents_xlen(req->dst, assoclen, CHCR_DST_SG_SIZE, 0);
2286 dnents += sg_nents_xlen(req->dst, req->cryptlen +
2287 (reqctx->op ? -authsize : authsize), CHCR_DST_SG_SIZE,
2288 req->assoclen);
2289 dnents += MIN_AUTH_SG; // For IV
2290
2291 dst_size = get_space_for_phys_dsgl(dnents);
2292 kctx_len = (ntohl(KEY_CONTEXT_CTX_LEN_V(aeadctx->key_ctx_hdr)) << 4)
2293 - sizeof(chcr_req->key_ctx);
2294 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
2295 reqctx->imm = (transhdr_len + assoclen + IV + req->cryptlen) <
2296 SGE_MAX_WR_LEN;
2297 temp = reqctx->imm ? roundup(assoclen + IV + req->cryptlen, 16)
2298 : (sgl_len(reqctx->src_nents + reqctx->aad_nents
2299 + MIN_GCM_SG) * 8);
2300 transhdr_len += temp;
2301 transhdr_len = roundup(transhdr_len, 16);
2302
2303 if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE,
2304 transhdr_len, reqctx->op)) {
2305 atomic_inc(&adap->chcr_stats.fallback);
2306 chcr_aead_common_exit(req);
2307 return ERR_PTR(chcr_aead_fallback(req, reqctx->op));
2308 }
2309 skb = alloc_skb(SGE_MAX_WR_LEN, flags);
2310 if (!skb) {
2311 error = -ENOMEM;
2312 goto err;
2313 }
2314
2315 chcr_req = __skb_put_zero(skb, transhdr_len);
2316
2317 temp = (reqctx->op == CHCR_ENCRYPT_OP) ? 0 : authsize;
2318
2319 /*
2320 * Input order is AAD,IV and Payload. where IV should be included as
2321 * the part of authdata. All other fields should be filled according
2322 * to the hardware spec
2323 */
2324 chcr_req->sec_cpl.op_ivinsrtofst =
2325 FILL_SEC_CPL_OP_IVINSR(a_ctx(tfm)->dev->rx_channel_id, 2,
2326 assoclen + 1);
2327 chcr_req->sec_cpl.pldlen = htonl(assoclen + IV + req->cryptlen);
2328 chcr_req->sec_cpl.aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI(
2329 assoclen ? 1 : 0, assoclen,
2330 assoclen + IV + 1,
2331 (temp & 0x1F0) >> 4);
2332 chcr_req->sec_cpl.cipherstop_lo_authinsert = FILL_SEC_CPL_AUTHINSERT(
2333 temp & 0xF,
2334 null ? 0 : assoclen + IV + 1,
2335 temp, temp);
2336 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL ||
2337 subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA)
2338 temp = CHCR_SCMD_CIPHER_MODE_AES_CTR;
2339 else
2340 temp = CHCR_SCMD_CIPHER_MODE_AES_CBC;
2341 chcr_req->sec_cpl.seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(reqctx->op,
2342 (reqctx->op == CHCR_ENCRYPT_OP) ? 1 : 0,
2343 temp,
2344 actx->auth_mode, aeadctx->hmac_ctrl,
2345 IV >> 1);
2346 chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1,
2347 0, 0, dst_size);
2348
2349 chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr;
2350 if (reqctx->op == CHCR_ENCRYPT_OP ||
2351 subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
2352 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL)
2353 memcpy(chcr_req->key_ctx.key, aeadctx->key,
2354 aeadctx->enckey_len);
2355 else
2356 memcpy(chcr_req->key_ctx.key, actx->dec_rrkey,
2357 aeadctx->enckey_len);
2358
2359 memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16),
2360 actx->h_iopad, kctx_len - roundup(aeadctx->enckey_len, 16));
2361 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
2362 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
2363 memcpy(reqctx->iv, aeadctx->nonce, CTR_RFC3686_NONCE_SIZE);
2364 memcpy(reqctx->iv + CTR_RFC3686_NONCE_SIZE, req->iv,
2365 CTR_RFC3686_IV_SIZE);
2366 *(__be32 *)(reqctx->iv + CTR_RFC3686_NONCE_SIZE +
2367 CTR_RFC3686_IV_SIZE) = cpu_to_be32(1);
2368 } else {
2369 memcpy(reqctx->iv, req->iv, IV);
2370 }
2371 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
2372 ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size);
2373 chcr_add_aead_dst_ent(req, phys_cpl, assoclen, qid);
2374 chcr_add_aead_src_ent(req, ulptx, assoclen);
2375 atomic_inc(&adap->chcr_stats.cipher_rqst);
2376 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size +
2377 kctx_len + (reqctx->imm ? (assoclen + IV + req->cryptlen) : 0);
2378 create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, size,
2379 transhdr_len, temp, 0);
2380 reqctx->skb = skb;
2381
2382 return skb;
2383 err:
2384 chcr_aead_common_exit(req);
2385
2386 return ERR_PTR(error);
2387 }
2388
2389 int chcr_aead_dma_map(struct device *dev,
2390 struct aead_request *req,
2391 unsigned short op_type)
2392 {
2393 int error;
2394 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2395 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2396 unsigned int authsize = crypto_aead_authsize(tfm);
2397 int dst_size;
2398
2399 dst_size = req->assoclen + req->cryptlen + (op_type ?
2400 -authsize : authsize);
2401 if (!req->cryptlen || !dst_size)
2402 return 0;
2403 reqctx->iv_dma = dma_map_single(dev, reqctx->iv, (IV + reqctx->b0_len),
2404 DMA_BIDIRECTIONAL);
2405 if (dma_mapping_error(dev, reqctx->iv_dma))
2406 return -ENOMEM;
2407 if (reqctx->b0_len)
2408 reqctx->b0_dma = reqctx->iv_dma + IV;
2409 else
2410 reqctx->b0_dma = 0;
2411 if (req->src == req->dst) {
2412 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2413 DMA_BIDIRECTIONAL);
2414 if (!error)
2415 goto err;
2416 } else {
2417 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2418 DMA_TO_DEVICE);
2419 if (!error)
2420 goto err;
2421 error = dma_map_sg(dev, req->dst, sg_nents(req->dst),
2422 DMA_FROM_DEVICE);
2423 if (!error) {
2424 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2425 DMA_TO_DEVICE);
2426 goto err;
2427 }
2428 }
2429
2430 return 0;
2431 err:
2432 dma_unmap_single(dev, reqctx->iv_dma, IV, DMA_BIDIRECTIONAL);
2433 return -ENOMEM;
2434 }
2435
2436 void chcr_aead_dma_unmap(struct device *dev,
2437 struct aead_request *req,
2438 unsigned short op_type)
2439 {
2440 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2441 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2442 unsigned int authsize = crypto_aead_authsize(tfm);
2443 int dst_size;
2444
2445 dst_size = req->assoclen + req->cryptlen + (op_type ?
2446 -authsize : authsize);
2447 if (!req->cryptlen || !dst_size)
2448 return;
2449
2450 dma_unmap_single(dev, reqctx->iv_dma, (IV + reqctx->b0_len),
2451 DMA_BIDIRECTIONAL);
2452 if (req->src == req->dst) {
2453 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2454 DMA_BIDIRECTIONAL);
2455 } else {
2456 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2457 DMA_TO_DEVICE);
2458 dma_unmap_sg(dev, req->dst, sg_nents(req->dst),
2459 DMA_FROM_DEVICE);
2460 }
2461 }
2462
2463 void chcr_add_aead_src_ent(struct aead_request *req,
2464 struct ulptx_sgl *ulptx,
2465 unsigned int assoclen)
2466 {
2467 struct ulptx_walk ulp_walk;
2468 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2469
2470 if (reqctx->imm) {
2471 u8 *buf = (u8 *)ulptx;
2472
2473 if (reqctx->b0_len) {
2474 memcpy(buf, reqctx->scratch_pad, reqctx->b0_len);
2475 buf += reqctx->b0_len;
2476 }
2477 sg_pcopy_to_buffer(req->src, sg_nents(req->src),
2478 buf, assoclen, 0);
2479 buf += assoclen;
2480 memcpy(buf, reqctx->iv, IV);
2481 buf += IV;
2482 sg_pcopy_to_buffer(req->src, sg_nents(req->src),
2483 buf, req->cryptlen, req->assoclen);
2484 } else {
2485 ulptx_walk_init(&ulp_walk, ulptx);
2486 if (reqctx->b0_len)
2487 ulptx_walk_add_page(&ulp_walk, reqctx->b0_len,
2488 &reqctx->b0_dma);
2489 ulptx_walk_add_sg(&ulp_walk, req->src, assoclen, 0);
2490 ulptx_walk_add_page(&ulp_walk, IV, &reqctx->iv_dma);
2491 ulptx_walk_add_sg(&ulp_walk, req->src, req->cryptlen,
2492 req->assoclen);
2493 ulptx_walk_end(&ulp_walk);
2494 }
2495 }
2496
2497 void chcr_add_aead_dst_ent(struct aead_request *req,
2498 struct cpl_rx_phys_dsgl *phys_cpl,
2499 unsigned int assoclen,
2500 unsigned short qid)
2501 {
2502 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2503 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2504 struct dsgl_walk dsgl_walk;
2505 unsigned int authsize = crypto_aead_authsize(tfm);
2506 u32 temp;
2507
2508 dsgl_walk_init(&dsgl_walk, phys_cpl);
2509 if (reqctx->b0_len)
2510 dsgl_walk_add_page(&dsgl_walk, reqctx->b0_len, &reqctx->b0_dma);
2511 dsgl_walk_add_sg(&dsgl_walk, req->dst, assoclen, 0);
2512 dsgl_walk_add_page(&dsgl_walk, IV, &reqctx->iv_dma);
2513 temp = req->cryptlen + (reqctx->op ? -authsize : authsize);
2514 dsgl_walk_add_sg(&dsgl_walk, req->dst, temp, req->assoclen);
2515 dsgl_walk_end(&dsgl_walk, qid);
2516 }
2517
2518 void chcr_add_cipher_src_ent(struct ablkcipher_request *req,
2519 void *ulptx,
2520 struct cipher_wr_param *wrparam)
2521 {
2522 struct ulptx_walk ulp_walk;
2523 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
2524 u8 *buf = ulptx;
2525
2526 memcpy(buf, reqctx->iv, IV);
2527 buf += IV;
2528 if (reqctx->imm) {
2529 sg_pcopy_to_buffer(req->src, sg_nents(req->src),
2530 buf, wrparam->bytes, reqctx->processed);
2531 } else {
2532 ulptx_walk_init(&ulp_walk, (struct ulptx_sgl *)buf);
2533 ulptx_walk_add_sg(&ulp_walk, reqctx->srcsg, wrparam->bytes,
2534 reqctx->src_ofst);
2535 reqctx->srcsg = ulp_walk.last_sg;
2536 reqctx->src_ofst = ulp_walk.last_sg_len;
2537 ulptx_walk_end(&ulp_walk);
2538 }
2539 }
2540
2541 void chcr_add_cipher_dst_ent(struct ablkcipher_request *req,
2542 struct cpl_rx_phys_dsgl *phys_cpl,
2543 struct cipher_wr_param *wrparam,
2544 unsigned short qid)
2545 {
2546 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
2547 struct dsgl_walk dsgl_walk;
2548
2549 dsgl_walk_init(&dsgl_walk, phys_cpl);
2550 dsgl_walk_add_sg(&dsgl_walk, reqctx->dstsg, wrparam->bytes,
2551 reqctx->dst_ofst);
2552 reqctx->dstsg = dsgl_walk.last_sg;
2553 reqctx->dst_ofst = dsgl_walk.last_sg_len;
2554
2555 dsgl_walk_end(&dsgl_walk, qid);
2556 }
2557
2558 void chcr_add_hash_src_ent(struct ahash_request *req,
2559 struct ulptx_sgl *ulptx,
2560 struct hash_wr_param *param)
2561 {
2562 struct ulptx_walk ulp_walk;
2563 struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req);
2564
2565 if (reqctx->hctx_wr.imm) {
2566 u8 *buf = (u8 *)ulptx;
2567
2568 if (param->bfr_len) {
2569 memcpy(buf, reqctx->reqbfr, param->bfr_len);
2570 buf += param->bfr_len;
2571 }
2572
2573 sg_pcopy_to_buffer(reqctx->hctx_wr.srcsg,
2574 sg_nents(reqctx->hctx_wr.srcsg), buf,
2575 param->sg_len, 0);
2576 } else {
2577 ulptx_walk_init(&ulp_walk, ulptx);
2578 if (param->bfr_len)
2579 ulptx_walk_add_page(&ulp_walk, param->bfr_len,
2580 &reqctx->hctx_wr.dma_addr);
2581 ulptx_walk_add_sg(&ulp_walk, reqctx->hctx_wr.srcsg,
2582 param->sg_len, reqctx->hctx_wr.src_ofst);
2583 reqctx->hctx_wr.srcsg = ulp_walk.last_sg;
2584 reqctx->hctx_wr.src_ofst = ulp_walk.last_sg_len;
2585 ulptx_walk_end(&ulp_walk);
2586 }
2587 }
2588
2589 int chcr_hash_dma_map(struct device *dev,
2590 struct ahash_request *req)
2591 {
2592 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
2593 int error = 0;
2594
2595 if (!req->nbytes)
2596 return 0;
2597 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2598 DMA_TO_DEVICE);
2599 if (!error)
2600 return -ENOMEM;
2601 req_ctx->hctx_wr.is_sg_map = 1;
2602 return 0;
2603 }
2604
2605 void chcr_hash_dma_unmap(struct device *dev,
2606 struct ahash_request *req)
2607 {
2608 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
2609
2610 if (!req->nbytes)
2611 return;
2612
2613 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2614 DMA_TO_DEVICE);
2615 req_ctx->hctx_wr.is_sg_map = 0;
2616
2617 }
2618
2619 int chcr_cipher_dma_map(struct device *dev,
2620 struct ablkcipher_request *req)
2621 {
2622 int error;
2623
2624 if (req->src == req->dst) {
2625 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2626 DMA_BIDIRECTIONAL);
2627 if (!error)
2628 goto err;
2629 } else {
2630 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2631 DMA_TO_DEVICE);
2632 if (!error)
2633 goto err;
2634 error = dma_map_sg(dev, req->dst, sg_nents(req->dst),
2635 DMA_FROM_DEVICE);
2636 if (!error) {
2637 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2638 DMA_TO_DEVICE);
2639 goto err;
2640 }
2641 }
2642
2643 return 0;
2644 err:
2645 return -ENOMEM;
2646 }
2647
2648 void chcr_cipher_dma_unmap(struct device *dev,
2649 struct ablkcipher_request *req)
2650 {
2651 if (req->src == req->dst) {
2652 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2653 DMA_BIDIRECTIONAL);
2654 } else {
2655 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2656 DMA_TO_DEVICE);
2657 dma_unmap_sg(dev, req->dst, sg_nents(req->dst),
2658 DMA_FROM_DEVICE);
2659 }
2660 }
2661
2662 static int set_msg_len(u8 *block, unsigned int msglen, int csize)
2663 {
2664 __be32 data;
2665
2666 memset(block, 0, csize);
2667 block += csize;
2668
2669 if (csize >= 4)
2670 csize = 4;
2671 else if (msglen > (unsigned int)(1 << (8 * csize)))
2672 return -EOVERFLOW;
2673
2674 data = cpu_to_be32(msglen);
2675 memcpy(block - csize, (u8 *)&data + 4 - csize, csize);
2676
2677 return 0;
2678 }
2679
2680 static void generate_b0(struct aead_request *req,
2681 struct chcr_aead_ctx *aeadctx,
2682 unsigned short op_type)
2683 {
2684 unsigned int l, lp, m;
2685 int rc;
2686 struct crypto_aead *aead = crypto_aead_reqtfm(req);
2687 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2688 u8 *b0 = reqctx->scratch_pad;
2689
2690 m = crypto_aead_authsize(aead);
2691
2692 memcpy(b0, reqctx->iv, 16);
2693
2694 lp = b0[0];
2695 l = lp + 1;
2696
2697 /* set m, bits 3-5 */
2698 *b0 |= (8 * ((m - 2) / 2));
2699
2700 /* set adata, bit 6, if associated data is used */
2701 if (req->assoclen)
2702 *b0 |= 64;
2703 rc = set_msg_len(b0 + 16 - l,
2704 (op_type == CHCR_DECRYPT_OP) ?
2705 req->cryptlen - m : req->cryptlen, l);
2706 }
2707
2708 static inline int crypto_ccm_check_iv(const u8 *iv)
2709 {
2710 /* 2 <= L <= 8, so 1 <= L' <= 7. */
2711 if (iv[0] < 1 || iv[0] > 7)
2712 return -EINVAL;
2713
2714 return 0;
2715 }
2716
2717 static int ccm_format_packet(struct aead_request *req,
2718 struct chcr_aead_ctx *aeadctx,
2719 unsigned int sub_type,
2720 unsigned short op_type,
2721 unsigned int assoclen)
2722 {
2723 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2724 int rc = 0;
2725
2726 if (sub_type == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) {
2727 reqctx->iv[0] = 3;
2728 memcpy(reqctx->iv + 1, &aeadctx->salt[0], 3);
2729 memcpy(reqctx->iv + 4, req->iv, 8);
2730 memset(reqctx->iv + 12, 0, 4);
2731 } else {
2732 memcpy(reqctx->iv, req->iv, 16);
2733 }
2734 if (assoclen)
2735 *((unsigned short *)(reqctx->scratch_pad + 16)) =
2736 htons(assoclen);
2737
2738 generate_b0(req, aeadctx, op_type);
2739 /* zero the ctr value */
2740 memset(reqctx->iv + 15 - reqctx->iv[0], 0, reqctx->iv[0] + 1);
2741 return rc;
2742 }
2743
2744 static void fill_sec_cpl_for_aead(struct cpl_tx_sec_pdu *sec_cpl,
2745 unsigned int dst_size,
2746 struct aead_request *req,
2747 unsigned short op_type)
2748 {
2749 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2750 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2751 unsigned int cipher_mode = CHCR_SCMD_CIPHER_MODE_AES_CCM;
2752 unsigned int mac_mode = CHCR_SCMD_AUTH_MODE_CBCMAC;
2753 unsigned int c_id = a_ctx(tfm)->dev->rx_channel_id;
2754 unsigned int ccm_xtra;
2755 unsigned char tag_offset = 0, auth_offset = 0;
2756 unsigned int assoclen;
2757
2758 if (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309)
2759 assoclen = req->assoclen - 8;
2760 else
2761 assoclen = req->assoclen;
2762 ccm_xtra = CCM_B0_SIZE +
2763 ((assoclen) ? CCM_AAD_FIELD_SIZE : 0);
2764
2765 auth_offset = req->cryptlen ?
2766 (assoclen + IV + 1 + ccm_xtra) : 0;
2767 if (op_type == CHCR_DECRYPT_OP) {
2768 if (crypto_aead_authsize(tfm) != req->cryptlen)
2769 tag_offset = crypto_aead_authsize(tfm);
2770 else
2771 auth_offset = 0;
2772 }
2773
2774
2775 sec_cpl->op_ivinsrtofst = FILL_SEC_CPL_OP_IVINSR(c_id,
2776 2, assoclen + 1 + ccm_xtra);
2777 sec_cpl->pldlen =
2778 htonl(assoclen + IV + req->cryptlen + ccm_xtra);
2779 /* For CCM there wil be b0 always. So AAD start will be 1 always */
2780 sec_cpl->aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI(
2781 1, assoclen + ccm_xtra, assoclen
2782 + IV + 1 + ccm_xtra, 0);
2783
2784 sec_cpl->cipherstop_lo_authinsert = FILL_SEC_CPL_AUTHINSERT(0,
2785 auth_offset, tag_offset,
2786 (op_type == CHCR_ENCRYPT_OP) ? 0 :
2787 crypto_aead_authsize(tfm));
2788 sec_cpl->seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(op_type,
2789 (op_type == CHCR_ENCRYPT_OP) ? 0 : 1,
2790 cipher_mode, mac_mode,
2791 aeadctx->hmac_ctrl, IV >> 1);
2792
2793 sec_cpl->ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1, 0,
2794 0, dst_size);
2795 }
2796
2797 static int aead_ccm_validate_input(unsigned short op_type,
2798 struct aead_request *req,
2799 struct chcr_aead_ctx *aeadctx,
2800 unsigned int sub_type)
2801 {
2802 if (sub_type != CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) {
2803 if (crypto_ccm_check_iv(req->iv)) {
2804 pr_err("CCM: IV check fails\n");
2805 return -EINVAL;
2806 }
2807 } else {
2808 if (req->assoclen != 16 && req->assoclen != 20) {
2809 pr_err("RFC4309: Invalid AAD length %d\n",
2810 req->assoclen);
2811 return -EINVAL;
2812 }
2813 }
2814 return 0;
2815 }
2816
2817 static struct sk_buff *create_aead_ccm_wr(struct aead_request *req,
2818 unsigned short qid,
2819 int size)
2820 {
2821 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2822 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2823 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2824 struct sk_buff *skb = NULL;
2825 struct chcr_wr *chcr_req;
2826 struct cpl_rx_phys_dsgl *phys_cpl;
2827 struct ulptx_sgl *ulptx;
2828 unsigned int transhdr_len;
2829 unsigned int dst_size = 0, kctx_len, dnents, temp;
2830 unsigned int sub_type, assoclen = req->assoclen;
2831 unsigned int authsize = crypto_aead_authsize(tfm);
2832 int error = -EINVAL;
2833 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
2834 GFP_ATOMIC;
2835 struct adapter *adap = padap(a_ctx(tfm)->dev);
2836
2837 sub_type = get_aead_subtype(tfm);
2838 if (sub_type == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309)
2839 assoclen -= 8;
2840 reqctx->b0_len = CCM_B0_SIZE + (assoclen ? CCM_AAD_FIELD_SIZE : 0);
2841 error = chcr_aead_common_init(req);
2842 if (error)
2843 return ERR_PTR(error);
2844
2845 error = aead_ccm_validate_input(reqctx->op, req, aeadctx, sub_type);
2846 if (error)
2847 goto err;
2848 dnents = sg_nents_xlen(req->dst, assoclen, CHCR_DST_SG_SIZE, 0);
2849 dnents += sg_nents_xlen(req->dst, req->cryptlen
2850 + (reqctx->op ? -authsize : authsize),
2851 CHCR_DST_SG_SIZE, req->assoclen);
2852 dnents += MIN_CCM_SG; // For IV and B0
2853 dst_size = get_space_for_phys_dsgl(dnents);
2854 kctx_len = roundup(aeadctx->enckey_len, 16) * 2;
2855 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
2856 reqctx->imm = (transhdr_len + assoclen + IV + req->cryptlen +
2857 reqctx->b0_len) <= SGE_MAX_WR_LEN;
2858 temp = reqctx->imm ? roundup(assoclen + IV + req->cryptlen +
2859 reqctx->b0_len, 16) :
2860 (sgl_len(reqctx->src_nents + reqctx->aad_nents +
2861 MIN_CCM_SG) * 8);
2862 transhdr_len += temp;
2863 transhdr_len = roundup(transhdr_len, 16);
2864
2865 if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE -
2866 reqctx->b0_len, transhdr_len, reqctx->op)) {
2867 atomic_inc(&adap->chcr_stats.fallback);
2868 chcr_aead_common_exit(req);
2869 return ERR_PTR(chcr_aead_fallback(req, reqctx->op));
2870 }
2871 skb = alloc_skb(SGE_MAX_WR_LEN, flags);
2872
2873 if (!skb) {
2874 error = -ENOMEM;
2875 goto err;
2876 }
2877
2878 chcr_req = (struct chcr_wr *) __skb_put_zero(skb, transhdr_len);
2879
2880 fill_sec_cpl_for_aead(&chcr_req->sec_cpl, dst_size, req, reqctx->op);
2881
2882 chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr;
2883 memcpy(chcr_req->key_ctx.key, aeadctx->key, aeadctx->enckey_len);
2884 memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16),
2885 aeadctx->key, aeadctx->enckey_len);
2886
2887 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
2888 ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size);
2889 error = ccm_format_packet(req, aeadctx, sub_type, reqctx->op, assoclen);
2890 if (error)
2891 goto dstmap_fail;
2892 chcr_add_aead_dst_ent(req, phys_cpl, assoclen, qid);
2893 chcr_add_aead_src_ent(req, ulptx, assoclen);
2894
2895 atomic_inc(&adap->chcr_stats.aead_rqst);
2896 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size +
2897 kctx_len + (reqctx->imm ? (assoclen + IV + req->cryptlen +
2898 reqctx->b0_len) : 0);
2899 create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, 0,
2900 transhdr_len, temp, 0);
2901 reqctx->skb = skb;
2902
2903 return skb;
2904 dstmap_fail:
2905 kfree_skb(skb);
2906 err:
2907 chcr_aead_common_exit(req);
2908 return ERR_PTR(error);
2909 }
2910
2911 static struct sk_buff *create_gcm_wr(struct aead_request *req,
2912 unsigned short qid,
2913 int size)
2914 {
2915 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2916 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2917 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2918 struct sk_buff *skb = NULL;
2919 struct chcr_wr *chcr_req;
2920 struct cpl_rx_phys_dsgl *phys_cpl;
2921 struct ulptx_sgl *ulptx;
2922 unsigned int transhdr_len, dnents = 0;
2923 unsigned int dst_size = 0, temp = 0, kctx_len, assoclen = req->assoclen;
2924 unsigned int authsize = crypto_aead_authsize(tfm);
2925 int error = -EINVAL;
2926 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
2927 GFP_ATOMIC;
2928 struct adapter *adap = padap(a_ctx(tfm)->dev);
2929
2930 if (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106)
2931 assoclen = req->assoclen - 8;
2932
2933 reqctx->b0_len = 0;
2934 error = chcr_aead_common_init(req);
2935 if (error)
2936 return ERR_PTR(error);
2937 dnents = sg_nents_xlen(req->dst, assoclen, CHCR_DST_SG_SIZE, 0);
2938 dnents += sg_nents_xlen(req->dst, req->cryptlen +
2939 (reqctx->op ? -authsize : authsize),
2940 CHCR_DST_SG_SIZE, req->assoclen);
2941 dnents += MIN_GCM_SG; // For IV
2942 dst_size = get_space_for_phys_dsgl(dnents);
2943 kctx_len = roundup(aeadctx->enckey_len, 16) + AEAD_H_SIZE;
2944 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
2945 reqctx->imm = (transhdr_len + assoclen + IV + req->cryptlen) <=
2946 SGE_MAX_WR_LEN;
2947 temp = reqctx->imm ? roundup(assoclen + IV + req->cryptlen, 16) :
2948 (sgl_len(reqctx->src_nents +
2949 reqctx->aad_nents + MIN_GCM_SG) * 8);
2950 transhdr_len += temp;
2951 transhdr_len = roundup(transhdr_len, 16);
2952 if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE,
2953 transhdr_len, reqctx->op)) {
2954
2955 atomic_inc(&adap->chcr_stats.fallback);
2956 chcr_aead_common_exit(req);
2957 return ERR_PTR(chcr_aead_fallback(req, reqctx->op));
2958 }
2959 skb = alloc_skb(SGE_MAX_WR_LEN, flags);
2960 if (!skb) {
2961 error = -ENOMEM;
2962 goto err;
2963 }
2964
2965 chcr_req = __skb_put_zero(skb, transhdr_len);
2966
2967 //Offset of tag from end
2968 temp = (reqctx->op == CHCR_ENCRYPT_OP) ? 0 : authsize;
2969 chcr_req->sec_cpl.op_ivinsrtofst = FILL_SEC_CPL_OP_IVINSR(
2970 a_ctx(tfm)->dev->rx_channel_id, 2,
2971 (assoclen + 1));
2972 chcr_req->sec_cpl.pldlen =
2973 htonl(assoclen + IV + req->cryptlen);
2974 chcr_req->sec_cpl.aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI(
2975 assoclen ? 1 : 0, assoclen,
2976 assoclen + IV + 1, 0);
2977 chcr_req->sec_cpl.cipherstop_lo_authinsert =
2978 FILL_SEC_CPL_AUTHINSERT(0, assoclen + IV + 1,
2979 temp, temp);
2980 chcr_req->sec_cpl.seqno_numivs =
2981 FILL_SEC_CPL_SCMD0_SEQNO(reqctx->op, (reqctx->op ==
2982 CHCR_ENCRYPT_OP) ? 1 : 0,
2983 CHCR_SCMD_CIPHER_MODE_AES_GCM,
2984 CHCR_SCMD_AUTH_MODE_GHASH,
2985 aeadctx->hmac_ctrl, IV >> 1);
2986 chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1,
2987 0, 0, dst_size);
2988 chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr;
2989 memcpy(chcr_req->key_ctx.key, aeadctx->key, aeadctx->enckey_len);
2990 memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16),
2991 GCM_CTX(aeadctx)->ghash_h, AEAD_H_SIZE);
2992
2993 /* prepare a 16 byte iv */
2994 /* S A L T | IV | 0x00000001 */
2995 if (get_aead_subtype(tfm) ==
2996 CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106) {
2997 memcpy(reqctx->iv, aeadctx->salt, 4);
2998 memcpy(reqctx->iv + 4, req->iv, GCM_RFC4106_IV_SIZE);
2999 } else {
3000 memcpy(reqctx->iv, req->iv, GCM_AES_IV_SIZE);
3001 }
3002 *((unsigned int *)(reqctx->iv + 12)) = htonl(0x01);
3003
3004 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
3005 ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size);
3006
3007 chcr_add_aead_dst_ent(req, phys_cpl, assoclen, qid);
3008 chcr_add_aead_src_ent(req, ulptx, assoclen);
3009 atomic_inc(&adap->chcr_stats.aead_rqst);
3010 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size +
3011 kctx_len + (reqctx->imm ? (assoclen + IV + req->cryptlen) : 0);
3012 create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, size,
3013 transhdr_len, temp, reqctx->verify);
3014 reqctx->skb = skb;
3015 return skb;
3016
3017 err:
3018 chcr_aead_common_exit(req);
3019 return ERR_PTR(error);
3020 }
3021
3022
3023
3024 static int chcr_aead_cra_init(struct crypto_aead *tfm)
3025 {
3026 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3027 struct aead_alg *alg = crypto_aead_alg(tfm);
3028
3029 aeadctx->sw_cipher = crypto_alloc_aead(alg->base.cra_name, 0,
3030 CRYPTO_ALG_NEED_FALLBACK |
3031 CRYPTO_ALG_ASYNC);
3032 if (IS_ERR(aeadctx->sw_cipher))
3033 return PTR_ERR(aeadctx->sw_cipher);
3034 crypto_aead_set_reqsize(tfm, max(sizeof(struct chcr_aead_reqctx),
3035 sizeof(struct aead_request) +
3036 crypto_aead_reqsize(aeadctx->sw_cipher)));
3037 return chcr_device_init(a_ctx(tfm));
3038 }
3039
3040 static void chcr_aead_cra_exit(struct crypto_aead *tfm)
3041 {
3042 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3043
3044 crypto_free_aead(aeadctx->sw_cipher);
3045 }
3046
3047 static int chcr_authenc_null_setauthsize(struct crypto_aead *tfm,
3048 unsigned int authsize)
3049 {
3050 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3051
3052 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NOP;
3053 aeadctx->mayverify = VERIFY_HW;
3054 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
3055 }
3056 static int chcr_authenc_setauthsize(struct crypto_aead *tfm,
3057 unsigned int authsize)
3058 {
3059 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3060 u32 maxauth = crypto_aead_maxauthsize(tfm);
3061
3062 /*SHA1 authsize in ipsec is 12 instead of 10 i.e maxauthsize / 2 is not
3063 * true for sha1. authsize == 12 condition should be before
3064 * authsize == (maxauth >> 1)
3065 */
3066 if (authsize == ICV_4) {
3067 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1;
3068 aeadctx->mayverify = VERIFY_HW;
3069 } else if (authsize == ICV_6) {
3070 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL2;
3071 aeadctx->mayverify = VERIFY_HW;
3072 } else if (authsize == ICV_10) {
3073 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_TRUNC_RFC4366;
3074 aeadctx->mayverify = VERIFY_HW;
3075 } else if (authsize == ICV_12) {
3076 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
3077 aeadctx->mayverify = VERIFY_HW;
3078 } else if (authsize == ICV_14) {
3079 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3;
3080 aeadctx->mayverify = VERIFY_HW;
3081 } else if (authsize == (maxauth >> 1)) {
3082 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
3083 aeadctx->mayverify = VERIFY_HW;
3084 } else if (authsize == maxauth) {
3085 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3086 aeadctx->mayverify = VERIFY_HW;
3087 } else {
3088 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3089 aeadctx->mayverify = VERIFY_SW;
3090 }
3091 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
3092 }
3093
3094
3095 static int chcr_gcm_setauthsize(struct crypto_aead *tfm, unsigned int authsize)
3096 {
3097 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3098
3099 switch (authsize) {
3100 case ICV_4:
3101 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1;
3102 aeadctx->mayverify = VERIFY_HW;
3103 break;
3104 case ICV_8:
3105 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
3106 aeadctx->mayverify = VERIFY_HW;
3107 break;
3108 case ICV_12:
3109 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
3110 aeadctx->mayverify = VERIFY_HW;
3111 break;
3112 case ICV_14:
3113 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3;
3114 aeadctx->mayverify = VERIFY_HW;
3115 break;
3116 case ICV_16:
3117 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3118 aeadctx->mayverify = VERIFY_HW;
3119 break;
3120 case ICV_13:
3121 case ICV_15:
3122 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3123 aeadctx->mayverify = VERIFY_SW;
3124 break;
3125 default:
3126
3127 crypto_tfm_set_flags((struct crypto_tfm *) tfm,
3128 CRYPTO_TFM_RES_BAD_KEY_LEN);
3129 return -EINVAL;
3130 }
3131 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
3132 }
3133
3134 static int chcr_4106_4309_setauthsize(struct crypto_aead *tfm,
3135 unsigned int authsize)
3136 {
3137 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3138
3139 switch (authsize) {
3140 case ICV_8:
3141 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
3142 aeadctx->mayverify = VERIFY_HW;
3143 break;
3144 case ICV_12:
3145 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
3146 aeadctx->mayverify = VERIFY_HW;
3147 break;
3148 case ICV_16:
3149 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3150 aeadctx->mayverify = VERIFY_HW;
3151 break;
3152 default:
3153 crypto_tfm_set_flags((struct crypto_tfm *)tfm,
3154 CRYPTO_TFM_RES_BAD_KEY_LEN);
3155 return -EINVAL;
3156 }
3157 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
3158 }
3159
3160 static int chcr_ccm_setauthsize(struct crypto_aead *tfm,
3161 unsigned int authsize)
3162 {
3163 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3164
3165 switch (authsize) {
3166 case ICV_4:
3167 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1;
3168 aeadctx->mayverify = VERIFY_HW;
3169 break;
3170 case ICV_6:
3171 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL2;
3172 aeadctx->mayverify = VERIFY_HW;
3173 break;
3174 case ICV_8:
3175 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
3176 aeadctx->mayverify = VERIFY_HW;
3177 break;
3178 case ICV_10:
3179 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_TRUNC_RFC4366;
3180 aeadctx->mayverify = VERIFY_HW;
3181 break;
3182 case ICV_12:
3183 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
3184 aeadctx->mayverify = VERIFY_HW;
3185 break;
3186 case ICV_14:
3187 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3;
3188 aeadctx->mayverify = VERIFY_HW;
3189 break;
3190 case ICV_16:
3191 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3192 aeadctx->mayverify = VERIFY_HW;
3193 break;
3194 default:
3195 crypto_tfm_set_flags((struct crypto_tfm *)tfm,
3196 CRYPTO_TFM_RES_BAD_KEY_LEN);
3197 return -EINVAL;
3198 }
3199 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
3200 }
3201
3202 static int chcr_ccm_common_setkey(struct crypto_aead *aead,
3203 const u8 *key,
3204 unsigned int keylen)
3205 {
3206 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead));
3207 unsigned char ck_size, mk_size;
3208 int key_ctx_size = 0;
3209
3210 key_ctx_size = sizeof(struct _key_ctx) + roundup(keylen, 16) * 2;
3211 if (keylen == AES_KEYSIZE_128) {
3212 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
3213 mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_128;
3214 } else if (keylen == AES_KEYSIZE_192) {
3215 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
3216 mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_192;
3217 } else if (keylen == AES_KEYSIZE_256) {
3218 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
3219 mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256;
3220 } else {
3221 crypto_tfm_set_flags((struct crypto_tfm *)aead,
3222 CRYPTO_TFM_RES_BAD_KEY_LEN);
3223 aeadctx->enckey_len = 0;
3224 return -EINVAL;
3225 }
3226 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, mk_size, 0, 0,
3227 key_ctx_size >> 4);
3228 memcpy(aeadctx->key, key, keylen);
3229 aeadctx->enckey_len = keylen;
3230
3231 return 0;
3232 }
3233
3234 static int chcr_aead_ccm_setkey(struct crypto_aead *aead,
3235 const u8 *key,
3236 unsigned int keylen)
3237 {
3238 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead));
3239 int error;
3240
3241 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3242 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead) &
3243 CRYPTO_TFM_REQ_MASK);
3244 error = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3245 crypto_aead_clear_flags(aead, CRYPTO_TFM_RES_MASK);
3246 crypto_aead_set_flags(aead, crypto_aead_get_flags(aeadctx->sw_cipher) &
3247 CRYPTO_TFM_RES_MASK);
3248 if (error)
3249 return error;
3250 return chcr_ccm_common_setkey(aead, key, keylen);
3251 }
3252
3253 static int chcr_aead_rfc4309_setkey(struct crypto_aead *aead, const u8 *key,
3254 unsigned int keylen)
3255 {
3256 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead));
3257 int error;
3258
3259 if (keylen < 3) {
3260 crypto_tfm_set_flags((struct crypto_tfm *)aead,
3261 CRYPTO_TFM_RES_BAD_KEY_LEN);
3262 aeadctx->enckey_len = 0;
3263 return -EINVAL;
3264 }
3265 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3266 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead) &
3267 CRYPTO_TFM_REQ_MASK);
3268 error = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3269 crypto_aead_clear_flags(aead, CRYPTO_TFM_RES_MASK);
3270 crypto_aead_set_flags(aead, crypto_aead_get_flags(aeadctx->sw_cipher) &
3271 CRYPTO_TFM_RES_MASK);
3272 if (error)
3273 return error;
3274 keylen -= 3;
3275 memcpy(aeadctx->salt, key + keylen, 3);
3276 return chcr_ccm_common_setkey(aead, key, keylen);
3277 }
3278
3279 static int chcr_gcm_setkey(struct crypto_aead *aead, const u8 *key,
3280 unsigned int keylen)
3281 {
3282 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead));
3283 struct chcr_gcm_ctx *gctx = GCM_CTX(aeadctx);
3284 struct crypto_cipher *cipher;
3285 unsigned int ck_size;
3286 int ret = 0, key_ctx_size = 0;
3287
3288 aeadctx->enckey_len = 0;
3289 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3290 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead)
3291 & CRYPTO_TFM_REQ_MASK);
3292 ret = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3293 crypto_aead_clear_flags(aead, CRYPTO_TFM_RES_MASK);
3294 crypto_aead_set_flags(aead, crypto_aead_get_flags(aeadctx->sw_cipher) &
3295 CRYPTO_TFM_RES_MASK);
3296 if (ret)
3297 goto out;
3298
3299 if (get_aead_subtype(aead) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106 &&
3300 keylen > 3) {
3301 keylen -= 4; /* nonce/salt is present in the last 4 bytes */
3302 memcpy(aeadctx->salt, key + keylen, 4);
3303 }
3304 if (keylen == AES_KEYSIZE_128) {
3305 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
3306 } else if (keylen == AES_KEYSIZE_192) {
3307 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
3308 } else if (keylen == AES_KEYSIZE_256) {
3309 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
3310 } else {
3311 crypto_tfm_set_flags((struct crypto_tfm *)aead,
3312 CRYPTO_TFM_RES_BAD_KEY_LEN);
3313 pr_err("GCM: Invalid key length %d\n", keylen);
3314 ret = -EINVAL;
3315 goto out;
3316 }
3317
3318 memcpy(aeadctx->key, key, keylen);
3319 aeadctx->enckey_len = keylen;
3320 key_ctx_size = sizeof(struct _key_ctx) + roundup(keylen, 16) +
3321 AEAD_H_SIZE;
3322 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size,
3323 CHCR_KEYCTX_MAC_KEY_SIZE_128,
3324 0, 0,
3325 key_ctx_size >> 4);
3326 /* Calculate the H = CIPH(K, 0 repeated 16 times).
3327 * It will go in key context
3328 */
3329 cipher = crypto_alloc_cipher("aes-generic", 0, 0);
3330 if (IS_ERR(cipher)) {
3331 aeadctx->enckey_len = 0;
3332 ret = -ENOMEM;
3333 goto out;
3334 }
3335
3336 ret = crypto_cipher_setkey(cipher, key, keylen);
3337 if (ret) {
3338 aeadctx->enckey_len = 0;
3339 goto out1;
3340 }
3341 memset(gctx->ghash_h, 0, AEAD_H_SIZE);
3342 crypto_cipher_encrypt_one(cipher, gctx->ghash_h, gctx->ghash_h);
3343
3344 out1:
3345 crypto_free_cipher(cipher);
3346 out:
3347 return ret;
3348 }
3349
3350 static int chcr_authenc_setkey(struct crypto_aead *authenc, const u8 *key,
3351 unsigned int keylen)
3352 {
3353 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(authenc));
3354 struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx);
3355 /* it contains auth and cipher key both*/
3356 struct crypto_authenc_keys keys;
3357 unsigned int bs, subtype;
3358 unsigned int max_authsize = crypto_aead_alg(authenc)->maxauthsize;
3359 int err = 0, i, key_ctx_len = 0;
3360 unsigned char ck_size = 0;
3361 unsigned char pad[CHCR_HASH_MAX_BLOCK_SIZE_128] = { 0 };
3362 struct crypto_shash *base_hash = ERR_PTR(-EINVAL);
3363 struct algo_param param;
3364 int align;
3365 u8 *o_ptr = NULL;
3366
3367 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3368 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(authenc)
3369 & CRYPTO_TFM_REQ_MASK);
3370 err = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3371 crypto_aead_clear_flags(authenc, CRYPTO_TFM_RES_MASK);
3372 crypto_aead_set_flags(authenc, crypto_aead_get_flags(aeadctx->sw_cipher)
3373 & CRYPTO_TFM_RES_MASK);
3374 if (err)
3375 goto out;
3376
3377 if (crypto_authenc_extractkeys(&keys, key, keylen) != 0) {
3378 crypto_aead_set_flags(authenc, CRYPTO_TFM_RES_BAD_KEY_LEN);
3379 goto out;
3380 }
3381
3382 if (get_alg_config(&param, max_authsize)) {
3383 pr_err("chcr : Unsupported digest size\n");
3384 goto out;
3385 }
3386 subtype = get_aead_subtype(authenc);
3387 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
3388 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
3389 if (keys.enckeylen < CTR_RFC3686_NONCE_SIZE)
3390 goto out;
3391 memcpy(aeadctx->nonce, keys.enckey + (keys.enckeylen
3392 - CTR_RFC3686_NONCE_SIZE), CTR_RFC3686_NONCE_SIZE);
3393 keys.enckeylen -= CTR_RFC3686_NONCE_SIZE;
3394 }
3395 if (keys.enckeylen == AES_KEYSIZE_128) {
3396 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
3397 } else if (keys.enckeylen == AES_KEYSIZE_192) {
3398 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
3399 } else if (keys.enckeylen == AES_KEYSIZE_256) {
3400 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
3401 } else {
3402 pr_err("chcr : Unsupported cipher key\n");
3403 goto out;
3404 }
3405
3406 /* Copy only encryption key. We use authkey to generate h(ipad) and
3407 * h(opad) so authkey is not needed again. authkeylen size have the
3408 * size of the hash digest size.
3409 */
3410 memcpy(aeadctx->key, keys.enckey, keys.enckeylen);
3411 aeadctx->enckey_len = keys.enckeylen;
3412 if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_SHA ||
3413 subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL) {
3414
3415 get_aes_decrypt_key(actx->dec_rrkey, aeadctx->key,
3416 aeadctx->enckey_len << 3);
3417 }
3418 base_hash = chcr_alloc_shash(max_authsize);
3419 if (IS_ERR(base_hash)) {
3420 pr_err("chcr : Base driver cannot be loaded\n");
3421 aeadctx->enckey_len = 0;
3422 memzero_explicit(&keys, sizeof(keys));
3423 return -EINVAL;
3424 }
3425 {
3426 SHASH_DESC_ON_STACK(shash, base_hash);
3427
3428 shash->tfm = base_hash;
3429 shash->flags = crypto_shash_get_flags(base_hash);
3430 bs = crypto_shash_blocksize(base_hash);
3431 align = KEYCTX_ALIGN_PAD(max_authsize);
3432 o_ptr = actx->h_iopad + param.result_size + align;
3433
3434 if (keys.authkeylen > bs) {
3435 err = crypto_shash_digest(shash, keys.authkey,
3436 keys.authkeylen,
3437 o_ptr);
3438 if (err) {
3439 pr_err("chcr : Base driver cannot be loaded\n");
3440 goto out;
3441 }
3442 keys.authkeylen = max_authsize;
3443 } else
3444 memcpy(o_ptr, keys.authkey, keys.authkeylen);
3445
3446 /* Compute the ipad-digest*/
3447 memset(pad + keys.authkeylen, 0, bs - keys.authkeylen);
3448 memcpy(pad, o_ptr, keys.authkeylen);
3449 for (i = 0; i < bs >> 2; i++)
3450 *((unsigned int *)pad + i) ^= IPAD_DATA;
3451
3452 if (chcr_compute_partial_hash(shash, pad, actx->h_iopad,
3453 max_authsize))
3454 goto out;
3455 /* Compute the opad-digest */
3456 memset(pad + keys.authkeylen, 0, bs - keys.authkeylen);
3457 memcpy(pad, o_ptr, keys.authkeylen);
3458 for (i = 0; i < bs >> 2; i++)
3459 *((unsigned int *)pad + i) ^= OPAD_DATA;
3460
3461 if (chcr_compute_partial_hash(shash, pad, o_ptr, max_authsize))
3462 goto out;
3463
3464 /* convert the ipad and opad digest to network order */
3465 chcr_change_order(actx->h_iopad, param.result_size);
3466 chcr_change_order(o_ptr, param.result_size);
3467 key_ctx_len = sizeof(struct _key_ctx) +
3468 roundup(keys.enckeylen, 16) +
3469 (param.result_size + align) * 2;
3470 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, param.mk_size,
3471 0, 1, key_ctx_len >> 4);
3472 actx->auth_mode = param.auth_mode;
3473 chcr_free_shash(base_hash);
3474
3475 memzero_explicit(&keys, sizeof(keys));
3476 return 0;
3477 }
3478 out:
3479 aeadctx->enckey_len = 0;
3480 memzero_explicit(&keys, sizeof(keys));
3481 if (!IS_ERR(base_hash))
3482 chcr_free_shash(base_hash);
3483 return -EINVAL;
3484 }
3485
3486 static int chcr_aead_digest_null_setkey(struct crypto_aead *authenc,
3487 const u8 *key, unsigned int keylen)
3488 {
3489 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(authenc));
3490 struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx);
3491 struct crypto_authenc_keys keys;
3492 int err;
3493 /* it contains auth and cipher key both*/
3494 unsigned int subtype;
3495 int key_ctx_len = 0;
3496 unsigned char ck_size = 0;
3497
3498 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3499 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(authenc)
3500 & CRYPTO_TFM_REQ_MASK);
3501 err = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3502 crypto_aead_clear_flags(authenc, CRYPTO_TFM_RES_MASK);
3503 crypto_aead_set_flags(authenc, crypto_aead_get_flags(aeadctx->sw_cipher)
3504 & CRYPTO_TFM_RES_MASK);
3505 if (err)
3506 goto out;
3507
3508 if (crypto_authenc_extractkeys(&keys, key, keylen) != 0) {
3509 crypto_aead_set_flags(authenc, CRYPTO_TFM_RES_BAD_KEY_LEN);
3510 goto out;
3511 }
3512 subtype = get_aead_subtype(authenc);
3513 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
3514 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
3515 if (keys.enckeylen < CTR_RFC3686_NONCE_SIZE)
3516 goto out;
3517 memcpy(aeadctx->nonce, keys.enckey + (keys.enckeylen
3518 - CTR_RFC3686_NONCE_SIZE), CTR_RFC3686_NONCE_SIZE);
3519 keys.enckeylen -= CTR_RFC3686_NONCE_SIZE;
3520 }
3521 if (keys.enckeylen == AES_KEYSIZE_128) {
3522 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
3523 } else if (keys.enckeylen == AES_KEYSIZE_192) {
3524 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
3525 } else if (keys.enckeylen == AES_KEYSIZE_256) {
3526 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
3527 } else {
3528 pr_err("chcr : Unsupported cipher key %d\n", keys.enckeylen);
3529 goto out;
3530 }
3531 memcpy(aeadctx->key, keys.enckey, keys.enckeylen);
3532 aeadctx->enckey_len = keys.enckeylen;
3533 if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_SHA ||
3534 subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL) {
3535 get_aes_decrypt_key(actx->dec_rrkey, aeadctx->key,
3536 aeadctx->enckey_len << 3);
3537 }
3538 key_ctx_len = sizeof(struct _key_ctx) + roundup(keys.enckeylen, 16);
3539
3540 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY, 0,
3541 0, key_ctx_len >> 4);
3542 actx->auth_mode = CHCR_SCMD_AUTH_MODE_NOP;
3543 memzero_explicit(&keys, sizeof(keys));
3544 return 0;
3545 out:
3546 aeadctx->enckey_len = 0;
3547 memzero_explicit(&keys, sizeof(keys));
3548 return -EINVAL;
3549 }
3550
3551 static int chcr_aead_op(struct aead_request *req,
3552 int size,
3553 create_wr_t create_wr_fn)
3554 {
3555 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
3556 struct uld_ctx *u_ctx;
3557 struct sk_buff *skb;
3558 int isfull = 0;
3559
3560 if (!a_ctx(tfm)->dev) {
3561 pr_err("chcr : %s : No crypto device.\n", __func__);
3562 return -ENXIO;
3563 }
3564 u_ctx = ULD_CTX(a_ctx(tfm));
3565 if (cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
3566 a_ctx(tfm)->tx_qidx)) {
3567 isfull = 1;
3568 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
3569 return -ENOSPC;
3570 }
3571
3572 /* Form a WR from req */
3573 skb = create_wr_fn(req, u_ctx->lldi.rxq_ids[a_ctx(tfm)->rx_qidx], size);
3574
3575 if (IS_ERR(skb) || !skb)
3576 return PTR_ERR(skb);
3577
3578 skb->dev = u_ctx->lldi.ports[0];
3579 set_wr_txq(skb, CPL_PRIORITY_DATA, a_ctx(tfm)->tx_qidx);
3580 chcr_send_wr(skb);
3581 return isfull ? -EBUSY : -EINPROGRESS;
3582 }
3583
3584 static int chcr_aead_encrypt(struct aead_request *req)
3585 {
3586 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
3587 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
3588
3589 reqctx->verify = VERIFY_HW;
3590 reqctx->op = CHCR_ENCRYPT_OP;
3591
3592 switch (get_aead_subtype(tfm)) {
3593 case CRYPTO_ALG_SUB_TYPE_CTR_SHA:
3594 case CRYPTO_ALG_SUB_TYPE_CBC_SHA:
3595 case CRYPTO_ALG_SUB_TYPE_CBC_NULL:
3596 case CRYPTO_ALG_SUB_TYPE_CTR_NULL:
3597 return chcr_aead_op(req, 0, create_authenc_wr);
3598 case CRYPTO_ALG_SUB_TYPE_AEAD_CCM:
3599 case CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309:
3600 return chcr_aead_op(req, 0, create_aead_ccm_wr);
3601 default:
3602 return chcr_aead_op(req, 0, create_gcm_wr);
3603 }
3604 }
3605
3606 static int chcr_aead_decrypt(struct aead_request *req)
3607 {
3608 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
3609 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3610 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
3611 int size;
3612
3613 if (aeadctx->mayverify == VERIFY_SW) {
3614 size = crypto_aead_maxauthsize(tfm);
3615 reqctx->verify = VERIFY_SW;
3616 } else {
3617 size = 0;
3618 reqctx->verify = VERIFY_HW;
3619 }
3620 reqctx->op = CHCR_DECRYPT_OP;
3621 switch (get_aead_subtype(tfm)) {
3622 case CRYPTO_ALG_SUB_TYPE_CBC_SHA:
3623 case CRYPTO_ALG_SUB_TYPE_CTR_SHA:
3624 case CRYPTO_ALG_SUB_TYPE_CBC_NULL:
3625 case CRYPTO_ALG_SUB_TYPE_CTR_NULL:
3626 return chcr_aead_op(req, size, create_authenc_wr);
3627 case CRYPTO_ALG_SUB_TYPE_AEAD_CCM:
3628 case CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309:
3629 return chcr_aead_op(req, size, create_aead_ccm_wr);
3630 default:
3631 return chcr_aead_op(req, size, create_gcm_wr);
3632 }
3633 }
3634
3635 static struct chcr_alg_template driver_algs[] = {
3636 /* AES-CBC */
3637 {
3638 .type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_SUB_TYPE_CBC,
3639 .is_registered = 0,
3640 .alg.crypto = {
3641 .cra_name = "cbc(aes)",
3642 .cra_driver_name = "cbc-aes-chcr",
3643 .cra_blocksize = AES_BLOCK_SIZE,
3644 .cra_init = chcr_cra_init,
3645 .cra_exit = chcr_cra_exit,
3646 .cra_u.ablkcipher = {
3647 .min_keysize = AES_MIN_KEY_SIZE,
3648 .max_keysize = AES_MAX_KEY_SIZE,
3649 .ivsize = AES_BLOCK_SIZE,
3650 .setkey = chcr_aes_cbc_setkey,
3651 .encrypt = chcr_aes_encrypt,
3652 .decrypt = chcr_aes_decrypt,
3653 }
3654 }
3655 },
3656 {
3657 .type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_SUB_TYPE_XTS,
3658 .is_registered = 0,
3659 .alg.crypto = {
3660 .cra_name = "xts(aes)",
3661 .cra_driver_name = "xts-aes-chcr",
3662 .cra_blocksize = AES_BLOCK_SIZE,
3663 .cra_init = chcr_cra_init,
3664 .cra_exit = NULL,
3665 .cra_u .ablkcipher = {
3666 .min_keysize = 2 * AES_MIN_KEY_SIZE,
3667 .max_keysize = 2 * AES_MAX_KEY_SIZE,
3668 .ivsize = AES_BLOCK_SIZE,
3669 .setkey = chcr_aes_xts_setkey,
3670 .encrypt = chcr_aes_encrypt,
3671 .decrypt = chcr_aes_decrypt,
3672 }
3673 }
3674 },
3675 {
3676 .type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_SUB_TYPE_CTR,
3677 .is_registered = 0,
3678 .alg.crypto = {
3679 .cra_name = "ctr(aes)",
3680 .cra_driver_name = "ctr-aes-chcr",
3681 .cra_blocksize = 1,
3682 .cra_init = chcr_cra_init,
3683 .cra_exit = chcr_cra_exit,
3684 .cra_u.ablkcipher = {
3685 .min_keysize = AES_MIN_KEY_SIZE,
3686 .max_keysize = AES_MAX_KEY_SIZE,
3687 .ivsize = AES_BLOCK_SIZE,
3688 .setkey = chcr_aes_ctr_setkey,
3689 .encrypt = chcr_aes_encrypt,
3690 .decrypt = chcr_aes_decrypt,
3691 }
3692 }
3693 },
3694 {
3695 .type = CRYPTO_ALG_TYPE_ABLKCIPHER |
3696 CRYPTO_ALG_SUB_TYPE_CTR_RFC3686,
3697 .is_registered = 0,
3698 .alg.crypto = {
3699 .cra_name = "rfc3686(ctr(aes))",
3700 .cra_driver_name = "rfc3686-ctr-aes-chcr",
3701 .cra_blocksize = 1,
3702 .cra_init = chcr_rfc3686_init,
3703 .cra_exit = chcr_cra_exit,
3704 .cra_u.ablkcipher = {
3705 .min_keysize = AES_MIN_KEY_SIZE +
3706 CTR_RFC3686_NONCE_SIZE,
3707 .max_keysize = AES_MAX_KEY_SIZE +
3708 CTR_RFC3686_NONCE_SIZE,
3709 .ivsize = CTR_RFC3686_IV_SIZE,
3710 .setkey = chcr_aes_rfc3686_setkey,
3711 .encrypt = chcr_aes_encrypt,
3712 .decrypt = chcr_aes_decrypt,
3713 .geniv = "seqiv",
3714 }
3715 }
3716 },
3717 /* SHA */
3718 {
3719 .type = CRYPTO_ALG_TYPE_AHASH,
3720 .is_registered = 0,
3721 .alg.hash = {
3722 .halg.digestsize = SHA1_DIGEST_SIZE,
3723 .halg.base = {
3724 .cra_name = "sha1",
3725 .cra_driver_name = "sha1-chcr",
3726 .cra_blocksize = SHA1_BLOCK_SIZE,
3727 }
3728 }
3729 },
3730 {
3731 .type = CRYPTO_ALG_TYPE_AHASH,
3732 .is_registered = 0,
3733 .alg.hash = {
3734 .halg.digestsize = SHA256_DIGEST_SIZE,
3735 .halg.base = {
3736 .cra_name = "sha256",
3737 .cra_driver_name = "sha256-chcr",
3738 .cra_blocksize = SHA256_BLOCK_SIZE,
3739 }
3740 }
3741 },
3742 {
3743 .type = CRYPTO_ALG_TYPE_AHASH,
3744 .is_registered = 0,
3745 .alg.hash = {
3746 .halg.digestsize = SHA224_DIGEST_SIZE,
3747 .halg.base = {
3748 .cra_name = "sha224",
3749 .cra_driver_name = "sha224-chcr",
3750 .cra_blocksize = SHA224_BLOCK_SIZE,
3751 }
3752 }
3753 },
3754 {
3755 .type = CRYPTO_ALG_TYPE_AHASH,
3756 .is_registered = 0,
3757 .alg.hash = {
3758 .halg.digestsize = SHA384_DIGEST_SIZE,
3759 .halg.base = {
3760 .cra_name = "sha384",
3761 .cra_driver_name = "sha384-chcr",
3762 .cra_blocksize = SHA384_BLOCK_SIZE,
3763 }
3764 }
3765 },
3766 {
3767 .type = CRYPTO_ALG_TYPE_AHASH,
3768 .is_registered = 0,
3769 .alg.hash = {
3770 .halg.digestsize = SHA512_DIGEST_SIZE,
3771 .halg.base = {
3772 .cra_name = "sha512",
3773 .cra_driver_name = "sha512-chcr",
3774 .cra_blocksize = SHA512_BLOCK_SIZE,
3775 }
3776 }
3777 },
3778 /* HMAC */
3779 {
3780 .type = CRYPTO_ALG_TYPE_HMAC,
3781 .is_registered = 0,
3782 .alg.hash = {
3783 .halg.digestsize = SHA1_DIGEST_SIZE,
3784 .halg.base = {
3785 .cra_name = "hmac(sha1)",
3786 .cra_driver_name = "hmac-sha1-chcr",
3787 .cra_blocksize = SHA1_BLOCK_SIZE,
3788 }
3789 }
3790 },
3791 {
3792 .type = CRYPTO_ALG_TYPE_HMAC,
3793 .is_registered = 0,
3794 .alg.hash = {
3795 .halg.digestsize = SHA224_DIGEST_SIZE,
3796 .halg.base = {
3797 .cra_name = "hmac(sha224)",
3798 .cra_driver_name = "hmac-sha224-chcr",
3799 .cra_blocksize = SHA224_BLOCK_SIZE,
3800 }
3801 }
3802 },
3803 {
3804 .type = CRYPTO_ALG_TYPE_HMAC,
3805 .is_registered = 0,
3806 .alg.hash = {
3807 .halg.digestsize = SHA256_DIGEST_SIZE,
3808 .halg.base = {
3809 .cra_name = "hmac(sha256)",
3810 .cra_driver_name = "hmac-sha256-chcr",
3811 .cra_blocksize = SHA256_BLOCK_SIZE,
3812 }
3813 }
3814 },
3815 {
3816 .type = CRYPTO_ALG_TYPE_HMAC,
3817 .is_registered = 0,
3818 .alg.hash = {
3819 .halg.digestsize = SHA384_DIGEST_SIZE,
3820 .halg.base = {
3821 .cra_name = "hmac(sha384)",
3822 .cra_driver_name = "hmac-sha384-chcr",
3823 .cra_blocksize = SHA384_BLOCK_SIZE,
3824 }
3825 }
3826 },
3827 {
3828 .type = CRYPTO_ALG_TYPE_HMAC,
3829 .is_registered = 0,
3830 .alg.hash = {
3831 .halg.digestsize = SHA512_DIGEST_SIZE,
3832 .halg.base = {
3833 .cra_name = "hmac(sha512)",
3834 .cra_driver_name = "hmac-sha512-chcr",
3835 .cra_blocksize = SHA512_BLOCK_SIZE,
3836 }
3837 }
3838 },
3839 /* Add AEAD Algorithms */
3840 {
3841 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_GCM,
3842 .is_registered = 0,
3843 .alg.aead = {
3844 .base = {
3845 .cra_name = "gcm(aes)",
3846 .cra_driver_name = "gcm-aes-chcr",
3847 .cra_blocksize = 1,
3848 .cra_priority = CHCR_AEAD_PRIORITY,
3849 .cra_ctxsize = sizeof(struct chcr_context) +
3850 sizeof(struct chcr_aead_ctx) +
3851 sizeof(struct chcr_gcm_ctx),
3852 },
3853 .ivsize = GCM_AES_IV_SIZE,
3854 .maxauthsize = GHASH_DIGEST_SIZE,
3855 .setkey = chcr_gcm_setkey,
3856 .setauthsize = chcr_gcm_setauthsize,
3857 }
3858 },
3859 {
3860 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106,
3861 .is_registered = 0,
3862 .alg.aead = {
3863 .base = {
3864 .cra_name = "rfc4106(gcm(aes))",
3865 .cra_driver_name = "rfc4106-gcm-aes-chcr",
3866 .cra_blocksize = 1,
3867 .cra_priority = CHCR_AEAD_PRIORITY + 1,
3868 .cra_ctxsize = sizeof(struct chcr_context) +
3869 sizeof(struct chcr_aead_ctx) +
3870 sizeof(struct chcr_gcm_ctx),
3871
3872 },
3873 .ivsize = GCM_RFC4106_IV_SIZE,
3874 .maxauthsize = GHASH_DIGEST_SIZE,
3875 .setkey = chcr_gcm_setkey,
3876 .setauthsize = chcr_4106_4309_setauthsize,
3877 }
3878 },
3879 {
3880 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_CCM,
3881 .is_registered = 0,
3882 .alg.aead = {
3883 .base = {
3884 .cra_name = "ccm(aes)",
3885 .cra_driver_name = "ccm-aes-chcr",
3886 .cra_blocksize = 1,
3887 .cra_priority = CHCR_AEAD_PRIORITY,
3888 .cra_ctxsize = sizeof(struct chcr_context) +
3889 sizeof(struct chcr_aead_ctx),
3890
3891 },
3892 .ivsize = AES_BLOCK_SIZE,
3893 .maxauthsize = GHASH_DIGEST_SIZE,
3894 .setkey = chcr_aead_ccm_setkey,
3895 .setauthsize = chcr_ccm_setauthsize,
3896 }
3897 },
3898 {
3899 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309,
3900 .is_registered = 0,
3901 .alg.aead = {
3902 .base = {
3903 .cra_name = "rfc4309(ccm(aes))",
3904 .cra_driver_name = "rfc4309-ccm-aes-chcr",
3905 .cra_blocksize = 1,
3906 .cra_priority = CHCR_AEAD_PRIORITY + 1,
3907 .cra_ctxsize = sizeof(struct chcr_context) +
3908 sizeof(struct chcr_aead_ctx),
3909
3910 },
3911 .ivsize = 8,
3912 .maxauthsize = GHASH_DIGEST_SIZE,
3913 .setkey = chcr_aead_rfc4309_setkey,
3914 .setauthsize = chcr_4106_4309_setauthsize,
3915 }
3916 },
3917 {
3918 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
3919 .is_registered = 0,
3920 .alg.aead = {
3921 .base = {
3922 .cra_name = "authenc(hmac(sha1),cbc(aes))",
3923 .cra_driver_name =
3924 "authenc-hmac-sha1-cbc-aes-chcr",
3925 .cra_blocksize = AES_BLOCK_SIZE,
3926 .cra_priority = CHCR_AEAD_PRIORITY,
3927 .cra_ctxsize = sizeof(struct chcr_context) +
3928 sizeof(struct chcr_aead_ctx) +
3929 sizeof(struct chcr_authenc_ctx),
3930
3931 },
3932 .ivsize = AES_BLOCK_SIZE,
3933 .maxauthsize = SHA1_DIGEST_SIZE,
3934 .setkey = chcr_authenc_setkey,
3935 .setauthsize = chcr_authenc_setauthsize,
3936 }
3937 },
3938 {
3939 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
3940 .is_registered = 0,
3941 .alg.aead = {
3942 .base = {
3943
3944 .cra_name = "authenc(hmac(sha256),cbc(aes))",
3945 .cra_driver_name =
3946 "authenc-hmac-sha256-cbc-aes-chcr",
3947 .cra_blocksize = AES_BLOCK_SIZE,
3948 .cra_priority = CHCR_AEAD_PRIORITY,
3949 .cra_ctxsize = sizeof(struct chcr_context) +
3950 sizeof(struct chcr_aead_ctx) +
3951 sizeof(struct chcr_authenc_ctx),
3952
3953 },
3954 .ivsize = AES_BLOCK_SIZE,
3955 .maxauthsize = SHA256_DIGEST_SIZE,
3956 .setkey = chcr_authenc_setkey,
3957 .setauthsize = chcr_authenc_setauthsize,
3958 }
3959 },
3960 {
3961 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
3962 .is_registered = 0,
3963 .alg.aead = {
3964 .base = {
3965 .cra_name = "authenc(hmac(sha224),cbc(aes))",
3966 .cra_driver_name =
3967 "authenc-hmac-sha224-cbc-aes-chcr",
3968 .cra_blocksize = AES_BLOCK_SIZE,
3969 .cra_priority = CHCR_AEAD_PRIORITY,
3970 .cra_ctxsize = sizeof(struct chcr_context) +
3971 sizeof(struct chcr_aead_ctx) +
3972 sizeof(struct chcr_authenc_ctx),
3973 },
3974 .ivsize = AES_BLOCK_SIZE,
3975 .maxauthsize = SHA224_DIGEST_SIZE,
3976 .setkey = chcr_authenc_setkey,
3977 .setauthsize = chcr_authenc_setauthsize,
3978 }
3979 },
3980 {
3981 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
3982 .is_registered = 0,
3983 .alg.aead = {
3984 .base = {
3985 .cra_name = "authenc(hmac(sha384),cbc(aes))",
3986 .cra_driver_name =
3987 "authenc-hmac-sha384-cbc-aes-chcr",
3988 .cra_blocksize = AES_BLOCK_SIZE,
3989 .cra_priority = CHCR_AEAD_PRIORITY,
3990 .cra_ctxsize = sizeof(struct chcr_context) +
3991 sizeof(struct chcr_aead_ctx) +
3992 sizeof(struct chcr_authenc_ctx),
3993
3994 },
3995 .ivsize = AES_BLOCK_SIZE,
3996 .maxauthsize = SHA384_DIGEST_SIZE,
3997 .setkey = chcr_authenc_setkey,
3998 .setauthsize = chcr_authenc_setauthsize,
3999 }
4000 },
4001 {
4002 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
4003 .is_registered = 0,
4004 .alg.aead = {
4005 .base = {
4006 .cra_name = "authenc(hmac(sha512),cbc(aes))",
4007 .cra_driver_name =
4008 "authenc-hmac-sha512-cbc-aes-chcr",
4009 .cra_blocksize = AES_BLOCK_SIZE,
4010 .cra_priority = CHCR_AEAD_PRIORITY,
4011 .cra_ctxsize = sizeof(struct chcr_context) +
4012 sizeof(struct chcr_aead_ctx) +
4013 sizeof(struct chcr_authenc_ctx),
4014
4015 },
4016 .ivsize = AES_BLOCK_SIZE,
4017 .maxauthsize = SHA512_DIGEST_SIZE,
4018 .setkey = chcr_authenc_setkey,
4019 .setauthsize = chcr_authenc_setauthsize,
4020 }
4021 },
4022 {
4023 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_NULL,
4024 .is_registered = 0,
4025 .alg.aead = {
4026 .base = {
4027 .cra_name = "authenc(digest_null,cbc(aes))",
4028 .cra_driver_name =
4029 "authenc-digest_null-cbc-aes-chcr",
4030 .cra_blocksize = AES_BLOCK_SIZE,
4031 .cra_priority = CHCR_AEAD_PRIORITY,
4032 .cra_ctxsize = sizeof(struct chcr_context) +
4033 sizeof(struct chcr_aead_ctx) +
4034 sizeof(struct chcr_authenc_ctx),
4035
4036 },
4037 .ivsize = AES_BLOCK_SIZE,
4038 .maxauthsize = 0,
4039 .setkey = chcr_aead_digest_null_setkey,
4040 .setauthsize = chcr_authenc_null_setauthsize,
4041 }
4042 },
4043 {
4044 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4045 .is_registered = 0,
4046 .alg.aead = {
4047 .base = {
4048 .cra_name = "authenc(hmac(sha1),rfc3686(ctr(aes)))",
4049 .cra_driver_name =
4050 "authenc-hmac-sha1-rfc3686-ctr-aes-chcr",
4051 .cra_blocksize = 1,
4052 .cra_priority = CHCR_AEAD_PRIORITY,
4053 .cra_ctxsize = sizeof(struct chcr_context) +
4054 sizeof(struct chcr_aead_ctx) +
4055 sizeof(struct chcr_authenc_ctx),
4056
4057 },
4058 .ivsize = CTR_RFC3686_IV_SIZE,
4059 .maxauthsize = SHA1_DIGEST_SIZE,
4060 .setkey = chcr_authenc_setkey,
4061 .setauthsize = chcr_authenc_setauthsize,
4062 }
4063 },
4064 {
4065 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4066 .is_registered = 0,
4067 .alg.aead = {
4068 .base = {
4069
4070 .cra_name = "authenc(hmac(sha256),rfc3686(ctr(aes)))",
4071 .cra_driver_name =
4072 "authenc-hmac-sha256-rfc3686-ctr-aes-chcr",
4073 .cra_blocksize = 1,
4074 .cra_priority = CHCR_AEAD_PRIORITY,
4075 .cra_ctxsize = sizeof(struct chcr_context) +
4076 sizeof(struct chcr_aead_ctx) +
4077 sizeof(struct chcr_authenc_ctx),
4078
4079 },
4080 .ivsize = CTR_RFC3686_IV_SIZE,
4081 .maxauthsize = SHA256_DIGEST_SIZE,
4082 .setkey = chcr_authenc_setkey,
4083 .setauthsize = chcr_authenc_setauthsize,
4084 }
4085 },
4086 {
4087 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4088 .is_registered = 0,
4089 .alg.aead = {
4090 .base = {
4091 .cra_name = "authenc(hmac(sha224),rfc3686(ctr(aes)))",
4092 .cra_driver_name =
4093 "authenc-hmac-sha224-rfc3686-ctr-aes-chcr",
4094 .cra_blocksize = 1,
4095 .cra_priority = CHCR_AEAD_PRIORITY,
4096 .cra_ctxsize = sizeof(struct chcr_context) +
4097 sizeof(struct chcr_aead_ctx) +
4098 sizeof(struct chcr_authenc_ctx),
4099 },
4100 .ivsize = CTR_RFC3686_IV_SIZE,
4101 .maxauthsize = SHA224_DIGEST_SIZE,
4102 .setkey = chcr_authenc_setkey,
4103 .setauthsize = chcr_authenc_setauthsize,
4104 }
4105 },
4106 {
4107 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4108 .is_registered = 0,
4109 .alg.aead = {
4110 .base = {
4111 .cra_name = "authenc(hmac(sha384),rfc3686(ctr(aes)))",
4112 .cra_driver_name =
4113 "authenc-hmac-sha384-rfc3686-ctr-aes-chcr",
4114 .cra_blocksize = 1,
4115 .cra_priority = CHCR_AEAD_PRIORITY,
4116 .cra_ctxsize = sizeof(struct chcr_context) +
4117 sizeof(struct chcr_aead_ctx) +
4118 sizeof(struct chcr_authenc_ctx),
4119
4120 },
4121 .ivsize = CTR_RFC3686_IV_SIZE,
4122 .maxauthsize = SHA384_DIGEST_SIZE,
4123 .setkey = chcr_authenc_setkey,
4124 .setauthsize = chcr_authenc_setauthsize,
4125 }
4126 },
4127 {
4128 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4129 .is_registered = 0,
4130 .alg.aead = {
4131 .base = {
4132 .cra_name = "authenc(hmac(sha512),rfc3686(ctr(aes)))",
4133 .cra_driver_name =
4134 "authenc-hmac-sha512-rfc3686-ctr-aes-chcr",
4135 .cra_blocksize = 1,
4136 .cra_priority = CHCR_AEAD_PRIORITY,
4137 .cra_ctxsize = sizeof(struct chcr_context) +
4138 sizeof(struct chcr_aead_ctx) +
4139 sizeof(struct chcr_authenc_ctx),
4140
4141 },
4142 .ivsize = CTR_RFC3686_IV_SIZE,
4143 .maxauthsize = SHA512_DIGEST_SIZE,
4144 .setkey = chcr_authenc_setkey,
4145 .setauthsize = chcr_authenc_setauthsize,
4146 }
4147 },
4148 {
4149 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_NULL,
4150 .is_registered = 0,
4151 .alg.aead = {
4152 .base = {
4153 .cra_name = "authenc(digest_null,rfc3686(ctr(aes)))",
4154 .cra_driver_name =
4155 "authenc-digest_null-rfc3686-ctr-aes-chcr",
4156 .cra_blocksize = 1,
4157 .cra_priority = CHCR_AEAD_PRIORITY,
4158 .cra_ctxsize = sizeof(struct chcr_context) +
4159 sizeof(struct chcr_aead_ctx) +
4160 sizeof(struct chcr_authenc_ctx),
4161
4162 },
4163 .ivsize = CTR_RFC3686_IV_SIZE,
4164 .maxauthsize = 0,
4165 .setkey = chcr_aead_digest_null_setkey,
4166 .setauthsize = chcr_authenc_null_setauthsize,
4167 }
4168 },
4169
4170 };
4171
4172 /*
4173 * chcr_unregister_alg - Deregister crypto algorithms with
4174 * kernel framework.
4175 */
4176 static int chcr_unregister_alg(void)
4177 {
4178 int i;
4179
4180 for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
4181 switch (driver_algs[i].type & CRYPTO_ALG_TYPE_MASK) {
4182 case CRYPTO_ALG_TYPE_ABLKCIPHER:
4183 if (driver_algs[i].is_registered)
4184 crypto_unregister_alg(
4185 &driver_algs[i].alg.crypto);
4186 break;
4187 case CRYPTO_ALG_TYPE_AEAD:
4188 if (driver_algs[i].is_registered)
4189 crypto_unregister_aead(
4190 &driver_algs[i].alg.aead);
4191 break;
4192 case CRYPTO_ALG_TYPE_AHASH:
4193 if (driver_algs[i].is_registered)
4194 crypto_unregister_ahash(
4195 &driver_algs[i].alg.hash);
4196 break;
4197 }
4198 driver_algs[i].is_registered = 0;
4199 }
4200 return 0;
4201 }
4202
4203 #define SZ_AHASH_CTX sizeof(struct chcr_context)
4204 #define SZ_AHASH_H_CTX (sizeof(struct chcr_context) + sizeof(struct hmac_ctx))
4205 #define SZ_AHASH_REQ_CTX sizeof(struct chcr_ahash_req_ctx)
4206
4207 /*
4208 * chcr_register_alg - Register crypto algorithms with kernel framework.
4209 */
4210 static int chcr_register_alg(void)
4211 {
4212 struct crypto_alg ai;
4213 struct ahash_alg *a_hash;
4214 int err = 0, i;
4215 char *name = NULL;
4216
4217 for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
4218 if (driver_algs[i].is_registered)
4219 continue;
4220 switch (driver_algs[i].type & CRYPTO_ALG_TYPE_MASK) {
4221 case CRYPTO_ALG_TYPE_ABLKCIPHER:
4222 driver_algs[i].alg.crypto.cra_priority =
4223 CHCR_CRA_PRIORITY;
4224 driver_algs[i].alg.crypto.cra_module = THIS_MODULE;
4225 driver_algs[i].alg.crypto.cra_flags =
4226 CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC |
4227 CRYPTO_ALG_NEED_FALLBACK;
4228 driver_algs[i].alg.crypto.cra_ctxsize =
4229 sizeof(struct chcr_context) +
4230 sizeof(struct ablk_ctx);
4231 driver_algs[i].alg.crypto.cra_alignmask = 0;
4232 driver_algs[i].alg.crypto.cra_type =
4233 &crypto_ablkcipher_type;
4234 err = crypto_register_alg(&driver_algs[i].alg.crypto);
4235 name = driver_algs[i].alg.crypto.cra_driver_name;
4236 break;
4237 case CRYPTO_ALG_TYPE_AEAD:
4238 driver_algs[i].alg.aead.base.cra_flags =
4239 CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC |
4240 CRYPTO_ALG_NEED_FALLBACK;
4241 driver_algs[i].alg.aead.encrypt = chcr_aead_encrypt;
4242 driver_algs[i].alg.aead.decrypt = chcr_aead_decrypt;
4243 driver_algs[i].alg.aead.init = chcr_aead_cra_init;
4244 driver_algs[i].alg.aead.exit = chcr_aead_cra_exit;
4245 driver_algs[i].alg.aead.base.cra_module = THIS_MODULE;
4246 err = crypto_register_aead(&driver_algs[i].alg.aead);
4247 name = driver_algs[i].alg.aead.base.cra_driver_name;
4248 break;
4249 case CRYPTO_ALG_TYPE_AHASH:
4250 a_hash = &driver_algs[i].alg.hash;
4251 a_hash->update = chcr_ahash_update;
4252 a_hash->final = chcr_ahash_final;
4253 a_hash->finup = chcr_ahash_finup;
4254 a_hash->digest = chcr_ahash_digest;
4255 a_hash->export = chcr_ahash_export;
4256 a_hash->import = chcr_ahash_import;
4257 a_hash->halg.statesize = SZ_AHASH_REQ_CTX;
4258 a_hash->halg.base.cra_priority = CHCR_CRA_PRIORITY;
4259 a_hash->halg.base.cra_module = THIS_MODULE;
4260 a_hash->halg.base.cra_flags = CRYPTO_ALG_ASYNC;
4261 a_hash->halg.base.cra_alignmask = 0;
4262 a_hash->halg.base.cra_exit = NULL;
4263
4264 if (driver_algs[i].type == CRYPTO_ALG_TYPE_HMAC) {
4265 a_hash->halg.base.cra_init = chcr_hmac_cra_init;
4266 a_hash->halg.base.cra_exit = chcr_hmac_cra_exit;
4267 a_hash->init = chcr_hmac_init;
4268 a_hash->setkey = chcr_ahash_setkey;
4269 a_hash->halg.base.cra_ctxsize = SZ_AHASH_H_CTX;
4270 } else {
4271 a_hash->init = chcr_sha_init;
4272 a_hash->halg.base.cra_ctxsize = SZ_AHASH_CTX;
4273 a_hash->halg.base.cra_init = chcr_sha_cra_init;
4274 }
4275 err = crypto_register_ahash(&driver_algs[i].alg.hash);
4276 ai = driver_algs[i].alg.hash.halg.base;
4277 name = ai.cra_driver_name;
4278 break;
4279 }
4280 if (err) {
4281 pr_err("chcr : %s : Algorithm registration failed\n",
4282 name);
4283 goto register_err;
4284 } else {
4285 driver_algs[i].is_registered = 1;
4286 }
4287 }
4288 return 0;
4289
4290 register_err:
4291 chcr_unregister_alg();
4292 return err;
4293 }
4294
4295 /*
4296 * start_crypto - Register the crypto algorithms.
4297 * This should called once when the first device comesup. After this
4298 * kernel will start calling driver APIs for crypto operations.
4299 */
4300 int start_crypto(void)
4301 {
4302 return chcr_register_alg();
4303 }
4304
4305 /*
4306 * stop_crypto - Deregister all the crypto algorithms with kernel.
4307 * This should be called once when the last device goes down. After this
4308 * kernel will not call the driver API for crypto operations.
4309 */
4310 int stop_crypto(void)
4311 {
4312 chcr_unregister_alg();
4313 return 0;
4314 }
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