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crypt: chelsio - Send IV as Immediate for cipher algo
[mirror_ubuntu-hirsute-kernel.git] / drivers / crypto / chelsio / chcr_algo.c
CommitLineData
324429d7
HS		 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>
8f6acb7f 56#include <crypto/gcm.h>
324429d7 57#include <crypto/sha.h>
2debd332 58#include <crypto/authenc.h>
b8fd1f41
HJ		 59#include <crypto/ctr.h>
60#include <crypto/gf128mul.h>
2debd332
HJ		 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>
324429d7
HS		 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
2f47d580
HJ		 74#define IV AES_BLOCK_SIZE
75
8579e076
CIK		 76static 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};
6dad4e8a 82
8579e076
CIK		 83static 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};
6dad4e8a
AG		 89
90static u32 round_constant[11] = {
91 0x01000000, 0x02000000, 0x04000000, 0x08000000,
92 0x10000000, 0x20000000, 0x40000000, 0x80000000,
93 0x1B000000, 0x36000000, 0x6C000000
94};
95
96static int chcr_handle_cipher_resp(struct ablkcipher_request *req,
97 unsigned char *input, int err);
98
2debd332
HJ		 99static inline struct chcr_aead_ctx *AEAD_CTX(struct chcr_context *ctx)
100{
101 return ctx->crypto_ctx->aeadctx;
102}
103
324429d7
HS		 104static inline struct ablk_ctx *ABLK_CTX(struct chcr_context *ctx)
105{
106 return ctx->crypto_ctx->ablkctx;
107}
108
109static inline struct hmac_ctx *HMAC_CTX(struct chcr_context *ctx)
110{
111 return ctx->crypto_ctx->hmacctx;
112}
113
2debd332
HJ		 114static inline struct chcr_gcm_ctx *GCM_CTX(struct chcr_aead_ctx *gctx)
115{
116 return gctx->ctx->gcm;
117}
118
119static inline struct chcr_authenc_ctx *AUTHENC_CTX(struct chcr_aead_ctx *gctx)
120{
121 return gctx->ctx->authenc;
122}
123
324429d7
HS		 124static inline struct uld_ctx *ULD_CTX(struct chcr_context *ctx)
125{
126 return ctx->dev->u_ctx;
127}
128
129static inline int is_ofld_imm(const struct sk_buff *skb)
130{
2f47d580 131 return (skb->len <= SGE_MAX_WR_LEN);
324429d7
HS		 132}
133
5110e655
HJ		 134static 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
2f47d580
HJ		 139static int sg_nents_xlen(struct scatterlist *sg, unsigned int reqlen,
140 unsigned int entlen,
141 unsigned int skip)
2956f36c
HJ		 142{
143 int nents = 0;
144 unsigned int less;
2f47d580 145 unsigned int skip_len = 0;
2956f36c 146
2f47d580
HJ		 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 }
2956f36c
HJ		 156 }
157
2f47d580
HJ		 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 }
2956f36c
HJ		 165 return nents;
166}
167
6dad4e8a 168static inline int get_aead_subtype(struct crypto_aead *aead)
2f47d580 169{
6dad4e8a
AG		 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;
2f47d580 174}
2f47d580 175
6dad4e8a 176void chcr_verify_tag(struct aead_request *req, u8 *input, int *err)
2debd332
HJ		 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)) {
d600fc8a 187 cmp = crypto_memneq(&fw6_pld->data[2], (fw6_pld + 1), authsize);
2debd332
HJ		 188 } else {
189
190 sg_pcopy_to_buffer(req->src, sg_nents(req->src), temp,
191 authsize, req->assoclen +
192 req->cryptlen - authsize);
d600fc8a 193 cmp = crypto_memneq(temp, (fw6_pld + 1), authsize);
2debd332
HJ		 194 }
195 if (cmp)
196 *err = -EBADMSG;
197 else
198 *err = 0;
199}
200
6dad4e8a
AG		 201static 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 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
207 struct uld_ctx *u_ctx = ULD_CTX(a_ctx(tfm));
208
209 chcr_aead_dma_unmap(&u_ctx->lldi.pdev->dev, req, reqctx->op);
210 if (reqctx->b0_dma)
211 dma_unmap_single(&u_ctx->lldi.pdev->dev, reqctx->b0_dma,
212 reqctx->b0_len, DMA_BIDIRECTIONAL);
213 if (reqctx->verify == VERIFY_SW) {
214 chcr_verify_tag(req, input, &err);
215 reqctx->verify = VERIFY_HW;
216 }
217 req->base.complete(&req->base, err);
218}
219
2f47d580 220static void get_aes_decrypt_key(unsigned char *dec_key,
39f91a34
HJ		 221 const unsigned char *key,
222 unsigned int keylength)
223{
224 u32 temp;
225 u32 w_ring[MAX_NK];
226 int i, j, k;
227 u8 nr, nk;
228
229 switch (keylength) {
230 case AES_KEYLENGTH_128BIT:
231 nk = KEYLENGTH_4BYTES;
232 nr = NUMBER_OF_ROUNDS_10;
233 break;
234 case AES_KEYLENGTH_192BIT:
235 nk = KEYLENGTH_6BYTES;
236 nr = NUMBER_OF_ROUNDS_12;
237 break;
238 case AES_KEYLENGTH_256BIT:
239 nk = KEYLENGTH_8BYTES;
240 nr = NUMBER_OF_ROUNDS_14;
241 break;
242 default:
243 return;
244 }
245 for (i = 0; i < nk; i++)
246 w_ring[i] = be32_to_cpu(*(u32 *)&key[4 * i]);
247
248 i = 0;
249 temp = w_ring[nk - 1];
250 while (i + nk < (nr + 1) * 4) {
251 if (!(i % nk)) {
252 /* RotWord(temp) */
253 temp = (temp << 8) | (temp >> 24);
254 temp = aes_ks_subword(temp);
255 temp ^= round_constant[i / nk];
256 } else if (nk == 8 && (i % 4 == 0)) {
257 temp = aes_ks_subword(temp);
258 }
259 w_ring[i % nk] ^= temp;
260 temp = w_ring[i % nk];
261 i++;
262 }
263 i--;
264 for (k = 0, j = i % nk; k < nk; k++) {
265 *((u32 *)dec_key + k) = htonl(w_ring[j]);
266 j--;
267 if (j < 0)
268 j += nk;
269 }
270}
271
e7922729 272static struct crypto_shash *chcr_alloc_shash(unsigned int ds)
324429d7 273{
ec1bca94 274 struct crypto_shash *base_hash = ERR_PTR(-EINVAL);
324429d7
HS		 275
276 switch (ds) {
277 case SHA1_DIGEST_SIZE:
e7922729 278 base_hash = crypto_alloc_shash("sha1", 0, 0);
324429d7
HS		 279 break;
280 case SHA224_DIGEST_SIZE:
e7922729 281 base_hash = crypto_alloc_shash("sha224", 0, 0);
324429d7
HS		 282 break;
283 case SHA256_DIGEST_SIZE:
e7922729 284 base_hash = crypto_alloc_shash("sha256", 0, 0);
324429d7
HS		 285 break;
286 case SHA384_DIGEST_SIZE:
e7922729 287 base_hash = crypto_alloc_shash("sha384", 0, 0);
324429d7
HS		 288 break;
289 case SHA512_DIGEST_SIZE:
e7922729 290 base_hash = crypto_alloc_shash("sha512", 0, 0);
324429d7
HS		 291 break;
292 }
324429d7 293
e7922729 294 return base_hash;
324429d7
HS		 295}
296
297static int chcr_compute_partial_hash(struct shash_desc *desc,
298 char *iopad, char *result_hash,
299 int digest_size)
300{
301 struct sha1_state sha1_st;
302 struct sha256_state sha256_st;
303 struct sha512_state sha512_st;
304 int error;
305
306 if (digest_size == SHA1_DIGEST_SIZE) {
307 error = crypto_shash_init(desc) ?:
308 crypto_shash_update(desc, iopad, SHA1_BLOCK_SIZE) ?:
309 crypto_shash_export(desc, (void *)&sha1_st);
310 memcpy(result_hash, sha1_st.state, SHA1_DIGEST_SIZE);
311 } else if (digest_size == SHA224_DIGEST_SIZE) {
312 error = crypto_shash_init(desc) ?:
313 crypto_shash_update(desc, iopad, SHA256_BLOCK_SIZE) ?:
314 crypto_shash_export(desc, (void *)&sha256_st);
315 memcpy(result_hash, sha256_st.state, SHA256_DIGEST_SIZE);
316
317 } else if (digest_size == SHA256_DIGEST_SIZE) {
318 error = crypto_shash_init(desc) ?:
319 crypto_shash_update(desc, iopad, SHA256_BLOCK_SIZE) ?:
320 crypto_shash_export(desc, (void *)&sha256_st);
321 memcpy(result_hash, sha256_st.state, SHA256_DIGEST_SIZE);
322
323 } else if (digest_size == SHA384_DIGEST_SIZE) {
324 error = crypto_shash_init(desc) ?:
325 crypto_shash_update(desc, iopad, SHA512_BLOCK_SIZE) ?:
326 crypto_shash_export(desc, (void *)&sha512_st);
327 memcpy(result_hash, sha512_st.state, SHA512_DIGEST_SIZE);
328
329 } else if (digest_size == SHA512_DIGEST_SIZE) {
330 error = crypto_shash_init(desc) ?:
331 crypto_shash_update(desc, iopad, SHA512_BLOCK_SIZE) ?:
332 crypto_shash_export(desc, (void *)&sha512_st);
333 memcpy(result_hash, sha512_st.state, SHA512_DIGEST_SIZE);
334 } else {
335 error = -EINVAL;
336 pr_err("Unknown digest size %d\n", digest_size);
337 }
338 return error;
339}
340
341static void chcr_change_order(char *buf, int ds)
342{
343 int i;
344
345 if (ds == SHA512_DIGEST_SIZE) {
346 for (i = 0; i < (ds / sizeof(u64)); i++)
347 *((__be64 *)buf + i) =
348 cpu_to_be64(*((u64 *)buf + i));
349 } else {
350 for (i = 0; i < (ds / sizeof(u32)); i++)
351 *((__be32 *)buf + i) =
352 cpu_to_be32(*((u32 *)buf + i));
353 }
354}
355
356static inline int is_hmac(struct crypto_tfm *tfm)
357{
358 struct crypto_alg *alg = tfm->__crt_alg;
359 struct chcr_alg_template *chcr_crypto_alg =
360 container_of(__crypto_ahash_alg(alg), struct chcr_alg_template,
361 alg.hash);
5c86a8ff 362 if (chcr_crypto_alg->type == CRYPTO_ALG_TYPE_HMAC)
324429d7
HS		 363 return 1;
364 return 0;
365}
366
2f47d580
HJ		 367static inline void dsgl_walk_init(struct dsgl_walk *walk,
368 struct cpl_rx_phys_dsgl *dsgl)
324429d7 369{
2f47d580
HJ		 370 walk->dsgl = dsgl;
371 walk->nents = 0;
372 walk->to = (struct phys_sge_pairs *)(dsgl + 1);
373}
374
375static inline void dsgl_walk_end(struct dsgl_walk *walk, unsigned short qid)
376{
377 struct cpl_rx_phys_dsgl *phys_cpl;
378
379 phys_cpl = walk->dsgl;
324429d7
HS		 380
381 phys_cpl->op_to_tid = htonl(CPL_RX_PHYS_DSGL_OPCODE_V(CPL_RX_PHYS_DSGL)
382 | CPL_RX_PHYS_DSGL_ISRDMA_V(0));
2f47d580
HJ		 383 phys_cpl->pcirlxorder_to_noofsgentr =
384 htonl(CPL_RX_PHYS_DSGL_PCIRLXORDER_V(0) |
385 CPL_RX_PHYS_DSGL_PCINOSNOOP_V(0) |
386 CPL_RX_PHYS_DSGL_PCITPHNTENB_V(0) |
387 CPL_RX_PHYS_DSGL_PCITPHNT_V(0) |
388 CPL_RX_PHYS_DSGL_DCAID_V(0) |
389 CPL_RX_PHYS_DSGL_NOOFSGENTR_V(walk->nents));
390 phys_cpl->rss_hdr_int.opcode = CPL_RX_PHYS_ADDR;
391 phys_cpl->rss_hdr_int.qid = htons(qid);
392 phys_cpl->rss_hdr_int.hash_val = 0;
393}
394
395static inline void dsgl_walk_add_page(struct dsgl_walk *walk,
396 size_t size,
397 dma_addr_t *addr)
398{
399 int j;
400
401 if (!size)
402 return;
403 j = walk->nents;
404 walk->to->len[j % 8] = htons(size);
405 walk->to->addr[j % 8] = cpu_to_be64(*addr);
406 j++;
407 if ((j % 8) == 0)
408 walk->to++;
409 walk->nents = j;
410}
411
412static void dsgl_walk_add_sg(struct dsgl_walk *walk,
413 struct scatterlist *sg,
414 unsigned int slen,
415 unsigned int skip)
416{
417 int skip_len = 0;
418 unsigned int left_size = slen, len = 0;
419 unsigned int j = walk->nents;
420 int offset, ent_len;
421
422 if (!slen)
423 return;
424 while (sg && skip) {
425 if (sg_dma_len(sg) <= skip) {
426 skip -= sg_dma_len(sg);
427 skip_len = 0;
428 sg = sg_next(sg);
429 } else {
430 skip_len = skip;
431 skip = 0;
432 }
433 }
434
2956f36c 435 while (left_size && sg) {
2f47d580 436 len = min_t(u32, left_size, sg_dma_len(sg) - skip_len);
2956f36c
HJ		 437 offset = 0;
438 while (len) {
2f47d580
HJ		 439 ent_len = min_t(u32, len, CHCR_DST_SG_SIZE);
440 walk->to->len[j % 8] = htons(ent_len);
441 walk->to->addr[j % 8] = cpu_to_be64(sg_dma_address(sg) +
442 offset + skip_len);
2956f36c
HJ		 443 offset += ent_len;
444 len -= ent_len;
445 j++;
446 if ((j % 8) == 0)
2f47d580 447 walk->to++;
2956f36c 448 }
2f47d580
HJ		 449 walk->last_sg = sg;
450 walk->last_sg_len = min_t(u32, left_size, sg_dma_len(sg) -
451 skip_len) + skip_len;
452 left_size -= min_t(u32, left_size, sg_dma_len(sg) - skip_len);
453 skip_len = 0;
2956f36c
HJ		 454 sg = sg_next(sg);
455 }
2f47d580
HJ		 456 walk->nents = j;
457}
458
459static inline void ulptx_walk_init(struct ulptx_walk *walk,
460 struct ulptx_sgl *ulp)
461{
462 walk->sgl = ulp;
463 walk->nents = 0;
464 walk->pair_idx = 0;
465 walk->pair = ulp->sge;
466 walk->last_sg = NULL;
467 walk->last_sg_len = 0;
468}
469
470static inline void ulptx_walk_end(struct ulptx_walk *walk)
471{
472 walk->sgl->cmd_nsge = htonl(ULPTX_CMD_V(ULP_TX_SC_DSGL) |
473 ULPTX_NSGE_V(walk->nents));
474}
2956f36c 475
2f47d580
HJ		 476
477static inline void ulptx_walk_add_page(struct ulptx_walk *walk,
478 size_t size,
479 dma_addr_t *addr)
480{
481 if (!size)
482 return;
483
484 if (walk->nents == 0) {
485 walk->sgl->len0 = cpu_to_be32(size);
486 walk->sgl->addr0 = cpu_to_be64(*addr);
487 } else {
488 walk->pair->addr[walk->pair_idx] = cpu_to_be64(*addr);
489 walk->pair->len[walk->pair_idx] = cpu_to_be32(size);
490 walk->pair_idx = !walk->pair_idx;
491 if (!walk->pair_idx)
492 walk->pair++;
493 }
494 walk->nents++;
324429d7
HS		 495}
496
2f47d580 497static void ulptx_walk_add_sg(struct ulptx_walk *walk,
adf1ca61 498 struct scatterlist *sg,
2f47d580
HJ		 499 unsigned int len,
500 unsigned int skip)
324429d7 501{
2f47d580
HJ		 502 int small;
503 int skip_len = 0;
504 unsigned int sgmin;
324429d7 505
2f47d580
HJ		 506 if (!len)
507 return;
2f47d580
HJ		 508 while (sg && skip) {
509 if (sg_dma_len(sg) <= skip) {
510 skip -= sg_dma_len(sg);
511 skip_len = 0;
512 sg = sg_next(sg);
513 } else {
514 skip_len = skip;
515 skip = 0;
516 }
517 }
8daa32b9
HJ		 518 WARN(!sg, "SG should not be null here\n");
519 if (sg && (walk->nents == 0)) {
2f47d580
HJ		 520 small = min_t(unsigned int, sg_dma_len(sg) - skip_len, len);
521 sgmin = min_t(unsigned int, small, CHCR_SRC_SG_SIZE);
522 walk->sgl->len0 = cpu_to_be32(sgmin);
523 walk->sgl->addr0 = cpu_to_be64(sg_dma_address(sg) + skip_len);
524 walk->nents++;
525 len -= sgmin;
526 walk->last_sg = sg;
527 walk->last_sg_len = sgmin + skip_len;
528 skip_len += sgmin;
529 if (sg_dma_len(sg) == skip_len) {
530 sg = sg_next(sg);
531 skip_len = 0;
532 }
533 }
534
535 while (sg && len) {
536 small = min(sg_dma_len(sg) - skip_len, len);
537 sgmin = min_t(unsigned int, small, CHCR_SRC_SG_SIZE);
538 walk->pair->len[walk->pair_idx] = cpu_to_be32(sgmin);
539 walk->pair->addr[walk->pair_idx] =
540 cpu_to_be64(sg_dma_address(sg) + skip_len);
541 walk->pair_idx = !walk->pair_idx;
542 walk->nents++;
543 if (!walk->pair_idx)
544 walk->pair++;
545 len -= sgmin;
546 skip_len += sgmin;
547 walk->last_sg = sg;
548 walk->last_sg_len = skip_len;
549 if (sg_dma_len(sg) == skip_len) {
550 sg = sg_next(sg);
551 skip_len = 0;
552 }
324429d7 553 }
324429d7
HS		 554}
555
556static inline int get_cryptoalg_subtype(struct crypto_tfm *tfm)
557{
558 struct crypto_alg *alg = tfm->__crt_alg;
559 struct chcr_alg_template *chcr_crypto_alg =
560 container_of(alg, struct chcr_alg_template, alg.crypto);
561
562 return chcr_crypto_alg->type & CRYPTO_ALG_SUB_TYPE_MASK;
563}
564
b8fd1f41
HJ		 565static int cxgb4_is_crypto_q_full(struct net_device *dev, unsigned int idx)
566{
567 struct adapter *adap = netdev2adap(dev);
568 struct sge_uld_txq_info *txq_info =
569 adap->sge.uld_txq_info[CXGB4_TX_CRYPTO];
570 struct sge_uld_txq *txq;
571 int ret = 0;
572
573 local_bh_disable();
574 txq = &txq_info->uldtxq[idx];
575 spin_lock(&txq->sendq.lock);
576 if (txq->full)
577 ret = -1;
578 spin_unlock(&txq->sendq.lock);
579 local_bh_enable();
580 return ret;
581}
582
324429d7
HS		 583static int generate_copy_rrkey(struct ablk_ctx *ablkctx,
584 struct _key_ctx *key_ctx)
585{
586 if (ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC) {
cc1b156d 587 memcpy(key_ctx->key, ablkctx->rrkey, ablkctx->enckey_len);
324429d7
HS		 588 } else {
589 memcpy(key_ctx->key,
590 ablkctx->key + (ablkctx->enckey_len >> 1),
591 ablkctx->enckey_len >> 1);
cc1b156d
HJ		 592 memcpy(key_ctx->key + (ablkctx->enckey_len >> 1),
593 ablkctx->rrkey, ablkctx->enckey_len >> 1);
324429d7
HS		 594 }
595 return 0;
596}
5110e655
HJ		 597
598static int chcr_hash_ent_in_wr(struct scatterlist *src,
599 unsigned int minsg,
600 unsigned int space,
601 unsigned int srcskip)
602{
603 int srclen = 0;
604 int srcsg = minsg;
605 int soffset = 0, sless;
606
607 if (sg_dma_len(src) == srcskip) {
608 src = sg_next(src);
609 srcskip = 0;
610 }
611 while (src && space > (sgl_ent_len[srcsg + 1])) {
612 sless = min_t(unsigned int, sg_dma_len(src) - soffset - srcskip,
613 CHCR_SRC_SG_SIZE);
614 srclen += sless;
615 soffset += sless;
616 srcsg++;
617 if (sg_dma_len(src) == (soffset + srcskip)) {
618 src = sg_next(src);
619 soffset = 0;
620 srcskip = 0;
621 }
622 }
623 return srclen;
624}
625
b8fd1f41
HJ		 626static int chcr_sg_ent_in_wr(struct scatterlist *src,
627 struct scatterlist *dst,
628 unsigned int minsg,
2f47d580
HJ		 629 unsigned int space,
630 unsigned int srcskip,
631 unsigned int dstskip)
b8fd1f41
HJ		 632{
633 int srclen = 0, dstlen = 0;
2f47d580 634 int srcsg = minsg, dstsg = minsg;
1d693cf6 635 int offset = 0, soffset = 0, less, sless = 0;
b8fd1f41 636
2f47d580
HJ		 637 if (sg_dma_len(src) == srcskip) {
638 src = sg_next(src);
639 srcskip = 0;
640 }
2f47d580
HJ		 641 if (sg_dma_len(dst) == dstskip) {
642 dst = sg_next(dst);
643 dstskip = 0;
644 }
645
646 while (src && dst &&
b8fd1f41 647 space > (sgl_ent_len[srcsg + 1] + dsgl_ent_len[dstsg])) {
1d693cf6
HJ		 648 sless = min_t(unsigned int, sg_dma_len(src) - srcskip - soffset,
649 CHCR_SRC_SG_SIZE);
650 srclen += sless;
b8fd1f41 651 srcsg++;
2956f36c 652 offset = 0;
b8fd1f41
HJ		 653 while (dst && ((dstsg + 1) <= MAX_DSGL_ENT) &&
654 space > (sgl_ent_len[srcsg] + dsgl_ent_len[dstsg + 1])) {
655 if (srclen <= dstlen)
656 break;
2f47d580 657 less = min_t(unsigned int, sg_dma_len(dst) - offset -
db6deea4 658 dstskip, CHCR_DST_SG_SIZE);
2956f36c
HJ		 659 dstlen += less;
660 offset += less;
1d693cf6 661 if ((offset + dstskip) == sg_dma_len(dst)) {
2956f36c
HJ		 662 dst = sg_next(dst);
663 offset = 0;
664 }
b8fd1f41 665 dstsg++;
2f47d580 666 dstskip = 0;
b8fd1f41 667 }
1d693cf6
HJ		 668 soffset += sless;
669 if ((soffset + srcskip) == sg_dma_len(src)) {
670 src = sg_next(src);
671 srcskip = 0;
672 soffset = 0;
673 }
674
b8fd1f41 675 }
b8fd1f41
HJ		 676 return min(srclen, dstlen);
677}
678
679static int chcr_cipher_fallback(struct crypto_skcipher *cipher,
680 u32 flags,
681 struct scatterlist *src,
682 struct scatterlist *dst,
683 unsigned int nbytes,
684 u8 *iv,
685 unsigned short op_type)
686{
687 int err;
688
689 SKCIPHER_REQUEST_ON_STACK(subreq, cipher);
6faa0f57 690
b8fd1f41
HJ		 691 skcipher_request_set_tfm(subreq, cipher);
692 skcipher_request_set_callback(subreq, flags, NULL, NULL);
693 skcipher_request_set_crypt(subreq, src, dst,
694 nbytes, iv);
695
696 err = op_type ? crypto_skcipher_decrypt(subreq) :
697 crypto_skcipher_encrypt(subreq);
698 skcipher_request_zero(subreq);
699
700 return err;
324429d7 701
b8fd1f41 702}
324429d7 703static inline void create_wreq(struct chcr_context *ctx,
358961d1 704 struct chcr_wr *chcr_req,
2f47d580
HJ		 705 struct crypto_async_request *req,
706 unsigned int imm,
570265bf 707 int hash_sz,
2f47d580 708 unsigned int len16,
2512a624
HJ		 709 unsigned int sc_len,
710 unsigned int lcb)
324429d7
HS		 711{
712 struct uld_ctx *u_ctx = ULD_CTX(ctx);
72a56ca9 713 int qid = u_ctx->lldi.rxq_ids[ctx->rx_qidx];
324429d7 714
324429d7 715
570265bf 716 chcr_req->wreq.op_to_cctx_size = FILL_WR_OP_CCTX_SIZE;
358961d1 717 chcr_req->wreq.pld_size_hash_size =
570265bf 718 htonl(FW_CRYPTO_LOOKASIDE_WR_HASH_SIZE_V(hash_sz));
358961d1 719 chcr_req->wreq.len16_pkd =
2f47d580 720 htonl(FW_CRYPTO_LOOKASIDE_WR_LEN16_V(DIV_ROUND_UP(len16, 16)));
358961d1
HJ		 721 chcr_req->wreq.cookie = cpu_to_be64((uintptr_t)req);
722 chcr_req->wreq.rx_chid_to_rx_q_id =
8a13449f 723 FILL_WR_RX_Q_ID(ctx->dev->rx_channel_id, qid,
570265bf 724 !!lcb, ctx->tx_qidx);
324429d7 725
8a13449f
HJ		 726 chcr_req->ulptx.cmd_dest = FILL_ULPTX_CMD_DEST(ctx->dev->tx_channel_id,
727 qid);
2f47d580
HJ		 728 chcr_req->ulptx.len = htonl((DIV_ROUND_UP(len16, 16) -
729 ((sizeof(chcr_req->wreq)) >> 4)));
324429d7 730
2f47d580 731 chcr_req->sc_imm.cmd_more = FILL_CMD_MORE(!imm);
358961d1 732 chcr_req->sc_imm.len = cpu_to_be32(sizeof(struct cpl_tx_sec_pdu) +
2f47d580 733 sizeof(chcr_req->key_ctx) + sc_len);
324429d7
HS		 734}
735
736/**
737 * create_cipher_wr - form the WR for cipher operations
738 * @req: cipher req.
739 * @ctx: crypto driver context of the request.
740 * @qid: ingress qid where response of this WR should be received.
741 * @op_type: encryption or decryption
742 */
b8fd1f41 743static struct sk_buff *create_cipher_wr(struct cipher_wr_param *wrparam)
324429d7 744{
b8fd1f41 745 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(wrparam->req);
2f47d580 746 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm));
324429d7 747 struct sk_buff *skb = NULL;
358961d1 748 struct chcr_wr *chcr_req;
324429d7 749 struct cpl_rx_phys_dsgl *phys_cpl;
2f47d580 750 struct ulptx_sgl *ulptx;
b8fd1f41
HJ		 751 struct chcr_blkcipher_req_ctx *reqctx =
752 ablkcipher_request_ctx(wrparam->req);
2f47d580 753 unsigned int temp = 0, transhdr_len, dst_size;
b8fd1f41 754 int error;
2956f36c 755 int nents;
2f47d580 756 unsigned int kctx_len;
b8fd1f41
HJ		 757 gfp_t flags = wrparam->req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ?
758 GFP_KERNEL : GFP_ATOMIC;
2f47d580 759 struct adapter *adap = padap(c_ctx(tfm)->dev);
324429d7 760
2f47d580
HJ		 761 nents = sg_nents_xlen(reqctx->dstsg, wrparam->bytes, CHCR_DST_SG_SIZE,
762 reqctx->dst_ofst);
335bcc4a 763 dst_size = get_space_for_phys_dsgl(nents);
125d01ca 764 kctx_len = roundup(ablkctx->enckey_len, 16);
2f47d580
HJ		 765 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
766 nents = sg_nents_xlen(reqctx->srcsg, wrparam->bytes,
767 CHCR_SRC_SG_SIZE, reqctx->src_ofst);
335bcc4a
HJ		 768 temp = reqctx->imm ? roundup(wrparam->bytes, 16) :
769 (sgl_len(nents) * 8);
2f47d580 770 transhdr_len += temp;
125d01ca 771 transhdr_len = roundup(transhdr_len, 16);
2f47d580 772 skb = alloc_skb(SGE_MAX_WR_LEN, flags);
b8fd1f41
HJ		 773 if (!skb) {
774 error = -ENOMEM;
775 goto err;
776 }
de77b966 777 chcr_req = __skb_put_zero(skb, transhdr_len);
358961d1 778 chcr_req->sec_cpl.op_ivinsrtofst =
2f47d580 779 FILL_SEC_CPL_OP_IVINSR(c_ctx(tfm)->dev->rx_channel_id, 2, 1);
358961d1 780
2f47d580 781 chcr_req->sec_cpl.pldlen = htonl(IV + wrparam->bytes);
358961d1 782 chcr_req->sec_cpl.aadstart_cipherstop_hi =
2f47d580 783 FILL_SEC_CPL_CIPHERSTOP_HI(0, 0, IV + 1, 0);
358961d1
HJ		 784
785 chcr_req->sec_cpl.cipherstop_lo_authinsert =
786 FILL_SEC_CPL_AUTHINSERT(0, 0, 0, 0);
b8fd1f41 787 chcr_req->sec_cpl.seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(reqctx->op, 0,
324429d7 788 ablkctx->ciph_mode,
2f47d580 789 0, 0, IV >> 1);
358961d1 790 chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 0,
335bcc4a 791 0, 1, dst_size);
324429d7 792
358961d1 793 chcr_req->key_ctx.ctx_hdr = ablkctx->key_ctx_hdr;
b8fd1f41
HJ		 794 if ((reqctx->op == CHCR_DECRYPT_OP) &&
795 (!(get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) ==
796 CRYPTO_ALG_SUB_TYPE_CTR)) &&
797 (!(get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) ==
798 CRYPTO_ALG_SUB_TYPE_CTR_RFC3686))) {
358961d1 799 generate_copy_rrkey(ablkctx, &chcr_req->key_ctx);
324429d7 800 } else {
b8fd1f41
HJ		 801 if ((ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC) ||
802 (ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CTR)) {
358961d1
HJ		 803 memcpy(chcr_req->key_ctx.key, ablkctx->key,
804 ablkctx->enckey_len);
324429d7 805 } else {
358961d1 806 memcpy(chcr_req->key_ctx.key, ablkctx->key +
324429d7
HS		 807 (ablkctx->enckey_len >> 1),
808 ablkctx->enckey_len >> 1);
358961d1 809 memcpy(chcr_req->key_ctx.key +
324429d7
HS		 810 (ablkctx->enckey_len >> 1),
811 ablkctx->key,
812 ablkctx->enckey_len >> 1);
813 }
814 }
358961d1 815 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
2f47d580
HJ		 816 ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size);
817 chcr_add_cipher_src_ent(wrparam->req, ulptx, wrparam);
818 chcr_add_cipher_dst_ent(wrparam->req, phys_cpl, wrparam, wrparam->qid);
324429d7 819
ee0863ba 820 atomic_inc(&adap->chcr_stats.cipher_rqst);
335bcc4a
HJ		 821 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + kctx_len + IV
822 + (reqctx->imm ? (wrparam->bytes) : 0);
2f47d580
HJ		 823 create_wreq(c_ctx(tfm), chcr_req, &(wrparam->req->base), reqctx->imm, 0,
824 transhdr_len, temp,
2512a624 825 ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC);
5c86a8ff 826 reqctx->skb = skb;
5fb78dba
HJ		 827
828 if (reqctx->op && (ablkctx->ciph_mode ==
829 CHCR_SCMD_CIPHER_MODE_AES_CBC))
830 sg_pcopy_to_buffer(wrparam->req->src,
831 sg_nents(wrparam->req->src), wrparam->req->info, 16,
832 reqctx->processed + wrparam->bytes - AES_BLOCK_SIZE);
833
324429d7 834 return skb;
b8fd1f41
HJ		 835err:
836 return ERR_PTR(error);
837}
838
839static inline int chcr_keyctx_ck_size(unsigned int keylen)
840{
841 int ck_size = 0;
842
843 if (keylen == AES_KEYSIZE_128)
844 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
845 else if (keylen == AES_KEYSIZE_192)
846 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
847 else if (keylen == AES_KEYSIZE_256)
848 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
849 else
850 ck_size = 0;
851
852 return ck_size;
853}
854static int chcr_cipher_fallback_setkey(struct crypto_ablkcipher *cipher,
855 const u8 *key,
856 unsigned int keylen)
857{
858 struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
2f47d580 859 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
b8fd1f41
HJ		 860 int err = 0;
861
862 crypto_skcipher_clear_flags(ablkctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
863 crypto_skcipher_set_flags(ablkctx->sw_cipher, cipher->base.crt_flags &
864 CRYPTO_TFM_REQ_MASK);
865 err = crypto_skcipher_setkey(ablkctx->sw_cipher, key, keylen);
866 tfm->crt_flags &= ~CRYPTO_TFM_RES_MASK;
867 tfm->crt_flags |=
868 crypto_skcipher_get_flags(ablkctx->sw_cipher) &
869 CRYPTO_TFM_RES_MASK;
870 return err;
324429d7
HS		 871}
872
b8fd1f41
HJ		 873static int chcr_aes_cbc_setkey(struct crypto_ablkcipher *cipher,
874 const u8 *key,
324429d7
HS		 875 unsigned int keylen)
876{
2f47d580 877 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
324429d7
HS		 878 unsigned int ck_size, context_size;
879 u16 alignment = 0;
b8fd1f41 880 int err;
324429d7 881
b8fd1f41
HJ		 882 err = chcr_cipher_fallback_setkey(cipher, key, keylen);
883 if (err)
324429d7 884 goto badkey_err;
b8fd1f41
HJ		 885
886 ck_size = chcr_keyctx_ck_size(keylen);
887 alignment = ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192 ? 8 : 0;
cc1b156d
HJ		 888 memcpy(ablkctx->key, key, keylen);
889 ablkctx->enckey_len = keylen;
890 get_aes_decrypt_key(ablkctx->rrkey, ablkctx->key, keylen << 3);
324429d7
HS		 891 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD +
892 keylen + alignment) >> 4;
893
894 ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY,
895 0, 0, context_size);
896 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CBC;
897 return 0;
898badkey_err:
b8fd1f41 899 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
324429d7 900 ablkctx->enckey_len = 0;
b8fd1f41
HJ		 901
902 return err;
324429d7
HS		 903}
904
b8fd1f41
HJ		 905static int chcr_aes_ctr_setkey(struct crypto_ablkcipher *cipher,
906 const u8 *key,
907 unsigned int keylen)
324429d7 908{
2f47d580 909 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
b8fd1f41
HJ		 910 unsigned int ck_size, context_size;
911 u16 alignment = 0;
912 int err;
913
914 err = chcr_cipher_fallback_setkey(cipher, key, keylen);
915 if (err)
916 goto badkey_err;
917 ck_size = chcr_keyctx_ck_size(keylen);
918 alignment = (ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192) ? 8 : 0;
919 memcpy(ablkctx->key, key, keylen);
920 ablkctx->enckey_len = keylen;
921 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD +
922 keylen + alignment) >> 4;
923
924 ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY,
925 0, 0, context_size);
926 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CTR;
927
928 return 0;
929badkey_err:
930 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
931 ablkctx->enckey_len = 0;
932
933 return err;
934}
935
936static int chcr_aes_rfc3686_setkey(struct crypto_ablkcipher *cipher,
937 const u8 *key,
938 unsigned int keylen)
939{
2f47d580 940 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
b8fd1f41
HJ		 941 unsigned int ck_size, context_size;
942 u16 alignment = 0;
943 int err;
944
945 if (keylen < CTR_RFC3686_NONCE_SIZE)
946 return -EINVAL;
947 memcpy(ablkctx->nonce, key + (keylen - CTR_RFC3686_NONCE_SIZE),
948 CTR_RFC3686_NONCE_SIZE);
949
950 keylen -= CTR_RFC3686_NONCE_SIZE;
951 err = chcr_cipher_fallback_setkey(cipher, key, keylen);
952 if (err)
953 goto badkey_err;
954
955 ck_size = chcr_keyctx_ck_size(keylen);
956 alignment = (ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192) ? 8 : 0;
957 memcpy(ablkctx->key, key, keylen);
958 ablkctx->enckey_len = keylen;
959 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD +
960 keylen + alignment) >> 4;
961
962 ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY,
963 0, 0, context_size);
964 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CTR;
965
966 return 0;
967badkey_err:
968 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
969 ablkctx->enckey_len = 0;
970
971 return err;
972}
973static void ctr_add_iv(u8 *dstiv, u8 *srciv, u32 add)
974{
975 unsigned int size = AES_BLOCK_SIZE;
976 __be32 *b = (__be32 *)(dstiv + size);
977 u32 c, prev;
978
979 memcpy(dstiv, srciv, AES_BLOCK_SIZE);
980 for (; size >= 4; size -= 4) {
981 prev = be32_to_cpu(*--b);
982 c = prev + add;
983 *b = cpu_to_be32(c);
984 if (prev < c)
985 break;
986 add = 1;
987 }
988
989}
990
991static unsigned int adjust_ctr_overflow(u8 *iv, u32 bytes)
992{
993 __be32 *b = (__be32 *)(iv + AES_BLOCK_SIZE);
994 u64 c;
995 u32 temp = be32_to_cpu(*--b);
996
997 temp = ~temp;
998 c = (u64)temp + 1; // No of block can processed withou overflow
999 if ((bytes / AES_BLOCK_SIZE) > c)
1000 bytes = c * AES_BLOCK_SIZE;
1001 return bytes;
1002}
1003
209897d5
HJ		 1004static int chcr_update_tweak(struct ablkcipher_request *req, u8 *iv,
1005 u32 isfinal)
b8fd1f41
HJ		 1006{
1007 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
2f47d580 1008 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm));
b8fd1f41
HJ		 1009 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
1010 struct crypto_cipher *cipher;
1011 int ret, i;
1012 u8 *key;
1013 unsigned int keylen;
de1a00ac
HJ		 1014 int round = reqctx->last_req_len / AES_BLOCK_SIZE;
1015 int round8 = round / 8;
b8fd1f41 1016
d3f1d2f7 1017 cipher = ablkctx->aes_generic;
de1a00ac 1018 memcpy(iv, reqctx->iv, AES_BLOCK_SIZE);
b8fd1f41 1019
b8fd1f41
HJ		 1020 keylen = ablkctx->enckey_len / 2;
1021 key = ablkctx->key + keylen;
1022 ret = crypto_cipher_setkey(cipher, key, keylen);
1023 if (ret)
d3f1d2f7 1024 goto out;
335bcc4a 1025 crypto_cipher_encrypt_one(cipher, iv, iv);
de1a00ac
HJ		 1026 for (i = 0; i < round8; i++)
1027 gf128mul_x8_ble((le128 *)iv, (le128 *)iv);
1028
1029 for (i = 0; i < (round % 8); i++)
b8fd1f41
HJ		 1030 gf128mul_x_ble((le128 *)iv, (le128 *)iv);
1031
209897d5
HJ		 1032 if (!isfinal)
1033 crypto_cipher_decrypt_one(cipher, iv, iv);
b8fd1f41
HJ		 1034out:
1035 return ret;
1036}
1037
1038static int chcr_update_cipher_iv(struct ablkcipher_request *req,
1039 struct cpl_fw6_pld *fw6_pld, u8 *iv)
1040{
1041 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
1042 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
1043 int subtype = get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm));
ab677ff4 1044 int ret = 0;
324429d7 1045
b8fd1f41
HJ		 1046 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR)
1047 ctr_add_iv(iv, req->info, (reqctx->processed /
1048 AES_BLOCK_SIZE));
1049 else if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_RFC3686)
1050 *(__be32 *)(reqctx->iv + CTR_RFC3686_NONCE_SIZE +
1051 CTR_RFC3686_IV_SIZE) = cpu_to_be32((reqctx->processed /
1052 AES_BLOCK_SIZE) + 1);
1053 else if (subtype == CRYPTO_ALG_SUB_TYPE_XTS)
209897d5 1054 ret = chcr_update_tweak(req, iv, 0);
b8fd1f41
HJ		 1055 else if (subtype == CRYPTO_ALG_SUB_TYPE_CBC) {
1056 if (reqctx->op)
5fb78dba
HJ		 1057 /*Updated before sending last WR*/
1058 memcpy(iv, req->info, AES_BLOCK_SIZE);
b8fd1f41
HJ		 1059 else
1060 memcpy(iv, &fw6_pld->data[2], AES_BLOCK_SIZE);
1061 }
1062
324429d7 1063 return ret;
b8fd1f41 1064
324429d7
HS		 1065}
1066
b8fd1f41
HJ		 1067/* We need separate function for final iv because in rfc3686 Initial counter
1068 * starts from 1 and buffer size of iv is 8 byte only which remains constant
1069 * for subsequent update requests
1070 */
1071
1072static int chcr_final_cipher_iv(struct ablkcipher_request *req,
1073 struct cpl_fw6_pld *fw6_pld, u8 *iv)
1074{
1075 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
1076 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
1077 int subtype = get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm));
1078 int ret = 0;
1079
1080 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR)
1081 ctr_add_iv(iv, req->info, (reqctx->processed /
1082 AES_BLOCK_SIZE));
1083 else if (subtype == CRYPTO_ALG_SUB_TYPE_XTS)
209897d5 1084 ret = chcr_update_tweak(req, iv, 1);
b8fd1f41 1085 else if (subtype == CRYPTO_ALG_SUB_TYPE_CBC) {
5fb78dba
HJ		 1086 /*Already updated for Decrypt*/
1087 if (!reqctx->op)
b8fd1f41
HJ		 1088 memcpy(iv, &fw6_pld->data[2], AES_BLOCK_SIZE);
1089
1090 }
1091 return ret;
1092
1093}
1094
b8fd1f41
HJ		 1095static int chcr_handle_cipher_resp(struct ablkcipher_request *req,
1096 unsigned char *input, int err)
324429d7
HS		 1097{
1098 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
2f47d580
HJ		 1099 struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm));
1100 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm));
324429d7 1101 struct sk_buff *skb;
b8fd1f41
HJ		 1102 struct cpl_fw6_pld *fw6_pld = (struct cpl_fw6_pld *)input;
1103 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
1104 struct cipher_wr_param wrparam;
1105 int bytes;
1106
b8fd1f41 1107 if (err)
2f47d580 1108 goto unmap;
b8fd1f41 1109 if (req->nbytes == reqctx->processed) {
2f47d580
HJ		 1110 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev,
1111 req);
b8fd1f41
HJ		 1112 err = chcr_final_cipher_iv(req, fw6_pld, req->info);
1113 goto complete;
1114 }
1115
2f47d580 1116 if (!reqctx->imm) {
335bcc4a 1117 bytes = chcr_sg_ent_in_wr(reqctx->srcsg, reqctx->dstsg, 0,
5110e655 1118 CIP_SPACE_LEFT(ablkctx->enckey_len),
2f47d580 1119 reqctx->src_ofst, reqctx->dst_ofst);
db6deea4
HJ		 1120 if ((bytes + reqctx->processed) >= req->nbytes)
1121 bytes = req->nbytes - reqctx->processed;
1122 else
125d01ca 1123 bytes = rounddown(bytes, 16);
2f47d580
HJ		 1124 } else {
1125 /*CTR mode counter overfloa*/
1126 bytes = req->nbytes - reqctx->processed;
1127 }
b8fd1f41
HJ		 1128 err = chcr_update_cipher_iv(req, fw6_pld, reqctx->iv);
1129 if (err)
2f47d580 1130 goto unmap;
b8fd1f41
HJ		 1131
1132 if (unlikely(bytes == 0)) {
2f47d580
HJ		 1133 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev,
1134 req);
b8fd1f41
HJ		 1135 err = chcr_cipher_fallback(ablkctx->sw_cipher,
1136 req->base.flags,
2f47d580
HJ		 1137 req->src,
1138 req->dst,
1139 req->nbytes,
1140 req->info,
b8fd1f41
HJ		 1141 reqctx->op);
1142 goto complete;
1143 }
1144
1145 if (get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) ==
1146 CRYPTO_ALG_SUB_TYPE_CTR)
1147 bytes = adjust_ctr_overflow(reqctx->iv, bytes);
2f47d580 1148 wrparam.qid = u_ctx->lldi.rxq_ids[c_ctx(tfm)->rx_qidx];
b8fd1f41
HJ		 1149 wrparam.req = req;
1150 wrparam.bytes = bytes;
1151 skb = create_cipher_wr(&wrparam);
1152 if (IS_ERR(skb)) {
1153 pr_err("chcr : %s : Failed to form WR. No memory\n", __func__);
1154 err = PTR_ERR(skb);
2f47d580 1155 goto unmap;
b8fd1f41
HJ		 1156 }
1157 skb->dev = u_ctx->lldi.ports[0];
2f47d580 1158 set_wr_txq(skb, CPL_PRIORITY_DATA, c_ctx(tfm)->tx_qidx);
b8fd1f41 1159 chcr_send_wr(skb);
2f47d580
HJ		 1160 reqctx->last_req_len = bytes;
1161 reqctx->processed += bytes;
b8fd1f41 1162 return 0;
2f47d580
HJ		 1163unmap:
1164 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req);
b8fd1f41
HJ		 1165complete:
1166 req->base.complete(&req->base, err);
1167 return err;
1168}
1169
1170static int process_cipher(struct ablkcipher_request *req,
1171 unsigned short qid,
1172 struct sk_buff **skb,
1173 unsigned short op_type)
1174{
1175 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
1176 unsigned int ivsize = crypto_ablkcipher_ivsize(tfm);
1177 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
2f47d580 1178 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm));
b8fd1f41 1179 struct cipher_wr_param wrparam;
2956f36c 1180 int bytes, err = -EINVAL;
b8fd1f41 1181
b8fd1f41
HJ		 1182 reqctx->processed = 0;
1183 if (!req->info)
1184 goto error;
1185 if ((ablkctx->enckey_len == 0) || (ivsize > AES_BLOCK_SIZE) ||
1186 (req->nbytes == 0) ||
1187 (req->nbytes % crypto_ablkcipher_blocksize(tfm))) {
1188 pr_err("AES: Invalid value of Key Len %d nbytes %d IV Len %d\n",
1189 ablkctx->enckey_len, req->nbytes, ivsize);
1190 goto error;
1191 }
2f47d580
HJ		 1192 chcr_cipher_dma_map(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req);
1193 if (req->nbytes < (SGE_MAX_WR_LEN - (sizeof(struct chcr_wr) +
1194 AES_MIN_KEY_SIZE +
1195 sizeof(struct cpl_rx_phys_dsgl) +
1196 /*Min dsgl size*/
1197 32))) {
1198 /* Can be sent as Imm*/
1199 unsigned int dnents = 0, transhdr_len, phys_dsgl, kctx_len;
1200
1201 dnents = sg_nents_xlen(req->dst, req->nbytes,
1202 CHCR_DST_SG_SIZE, 0);
2f47d580 1203 phys_dsgl = get_space_for_phys_dsgl(dnents);
125d01ca 1204 kctx_len = roundup(ablkctx->enckey_len, 16);
2f47d580
HJ		 1205 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, phys_dsgl);
1206 reqctx->imm = (transhdr_len + IV + req->nbytes) <=
1207 SGE_MAX_WR_LEN;
1208 bytes = IV + req->nbytes;
1209
1210 } else {
1211 reqctx->imm = 0;
1212 }
1213
1214 if (!reqctx->imm) {
335bcc4a 1215 bytes = chcr_sg_ent_in_wr(req->src, req->dst, 0,
5110e655 1216 CIP_SPACE_LEFT(ablkctx->enckey_len),
2f47d580 1217 0, 0);
db6deea4
HJ		 1218 if ((bytes + reqctx->processed) >= req->nbytes)
1219 bytes = req->nbytes - reqctx->processed;
1220 else
125d01ca 1221 bytes = rounddown(bytes, 16);
2f47d580 1222 } else {
b8fd1f41 1223 bytes = req->nbytes;
2f47d580 1224 }
b8fd1f41 1225 if (get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) ==
db6deea4 1226 CRYPTO_ALG_SUB_TYPE_CTR) {
b8fd1f41
HJ		 1227 bytes = adjust_ctr_overflow(req->info, bytes);
1228 }
1229 if (get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) ==
1230 CRYPTO_ALG_SUB_TYPE_CTR_RFC3686) {
1231 memcpy(reqctx->iv, ablkctx->nonce, CTR_RFC3686_NONCE_SIZE);
1232 memcpy(reqctx->iv + CTR_RFC3686_NONCE_SIZE, req->info,
1233 CTR_RFC3686_IV_SIZE);
1234
1235 /* initialize counter portion of counter block */
1236 *(__be32 *)(reqctx->iv + CTR_RFC3686_NONCE_SIZE +
1237 CTR_RFC3686_IV_SIZE) = cpu_to_be32(1);
1238
1239 } else {
1240
2f47d580 1241 memcpy(reqctx->iv, req->info, IV);
b8fd1f41
HJ		 1242 }
1243 if (unlikely(bytes == 0)) {
2f47d580
HJ		 1244 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev,
1245 req);
b8fd1f41
HJ		 1246 err = chcr_cipher_fallback(ablkctx->sw_cipher,
1247 req->base.flags,
1248 req->src,
1249 req->dst,
1250 req->nbytes,
7ffb9118 1251 reqctx->iv,
b8fd1f41
HJ		 1252 op_type);
1253 goto error;
1254 }
b8fd1f41 1255 reqctx->op = op_type;
2f47d580
HJ		 1256 reqctx->srcsg = req->src;
1257 reqctx->dstsg = req->dst;
1258 reqctx->src_ofst = 0;
1259 reqctx->dst_ofst = 0;
b8fd1f41
HJ		 1260 wrparam.qid = qid;
1261 wrparam.req = req;
1262 wrparam.bytes = bytes;
1263 *skb = create_cipher_wr(&wrparam);
1264 if (IS_ERR(*skb)) {
1265 err = PTR_ERR(*skb);
2f47d580 1266 goto unmap;
b8fd1f41 1267 }
2f47d580
HJ		 1268 reqctx->processed = bytes;
1269 reqctx->last_req_len = bytes;
b8fd1f41
HJ		 1270
1271 return 0;
2f47d580
HJ		 1272unmap:
1273 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req);
b8fd1f41
HJ		 1274error:
1275 return err;
1276}
1277
1278static int chcr_aes_encrypt(struct ablkcipher_request *req)
1279{
1280 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
b8fd1f41 1281 struct sk_buff *skb = NULL;
6faa0f57 1282 int err, isfull = 0;
2f47d580 1283 struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm));
324429d7
HS		 1284
1285 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
2f47d580 1286 c_ctx(tfm)->tx_qidx))) {
6faa0f57 1287 isfull = 1;
324429d7 1288 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
6faa0f57 1289 return -ENOSPC;
324429d7
HS		 1290 }
1291
2f47d580
HJ		 1292 err = process_cipher(req, u_ctx->lldi.rxq_ids[c_ctx(tfm)->rx_qidx],
1293 &skb, CHCR_ENCRYPT_OP);
b8fd1f41
HJ		 1294 if (err || !skb)
1295 return err;
324429d7 1296 skb->dev = u_ctx->lldi.ports[0];
2f47d580 1297 set_wr_txq(skb, CPL_PRIORITY_DATA, c_ctx(tfm)->tx_qidx);
324429d7 1298 chcr_send_wr(skb);
6faa0f57 1299 return isfull ? -EBUSY : -EINPROGRESS;
324429d7
HS		 1300}
1301
1302static int chcr_aes_decrypt(struct ablkcipher_request *req)
1303{
1304 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
2f47d580 1305 struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm));
b8fd1f41 1306 struct sk_buff *skb = NULL;
6faa0f57 1307 int err, isfull = 0;
324429d7
HS		 1308
1309 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
2f47d580 1310 c_ctx(tfm)->tx_qidx))) {
6faa0f57 1311 isfull = 1;
324429d7 1312 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
6faa0f57 1313 return -ENOSPC;
324429d7
HS		 1314 }
1315
2f47d580
HJ		 1316 err = process_cipher(req, u_ctx->lldi.rxq_ids[c_ctx(tfm)->rx_qidx],
1317 &skb, CHCR_DECRYPT_OP);
b8fd1f41
HJ		 1318 if (err || !skb)
1319 return err;
324429d7 1320 skb->dev = u_ctx->lldi.ports[0];
2f47d580 1321 set_wr_txq(skb, CPL_PRIORITY_DATA, c_ctx(tfm)->tx_qidx);
324429d7 1322 chcr_send_wr(skb);
6faa0f57 1323 return isfull ? -EBUSY : -EINPROGRESS;
324429d7
HS		 1324}
1325
1326static int chcr_device_init(struct chcr_context *ctx)
1327{
14c19b17 1328 struct uld_ctx *u_ctx = NULL;
72a56ca9 1329 struct adapter *adap;
324429d7 1330 unsigned int id;
72a56ca9 1331 int txq_perchan, txq_idx, ntxq;
324429d7
HS		 1332 int err = 0, rxq_perchan, rxq_idx;
1333
1334 id = smp_processor_id();
1335 if (!ctx->dev) {
14c19b17
HJ		 1336 u_ctx = assign_chcr_device();
1337 if (!u_ctx) {
324429d7
HS		 1338 pr_err("chcr device assignment fails\n");
1339 goto out;
1340 }
14c19b17 1341 ctx->dev = u_ctx->dev;
72a56ca9
HJ		 1342 adap = padap(ctx->dev);
1343 ntxq = min_not_zero((unsigned int)u_ctx->lldi.nrxq,
1344 adap->vres.ncrypto_fc);
324429d7 1345 rxq_perchan = u_ctx->lldi.nrxq / u_ctx->lldi.nchan;
72a56ca9 1346 txq_perchan = ntxq / u_ctx->lldi.nchan;
324429d7
HS		 1347 rxq_idx = ctx->dev->tx_channel_id * rxq_perchan;
1348 rxq_idx += id % rxq_perchan;
72a56ca9
HJ		 1349 txq_idx = ctx->dev->tx_channel_id * txq_perchan;
1350 txq_idx += id % txq_perchan;
324429d7 1351 spin_lock(&ctx->dev->lock_chcr_dev);
72a56ca9
HJ		 1352 ctx->rx_qidx = rxq_idx;
1353 ctx->tx_qidx = txq_idx;
ab677ff4 1354 ctx->dev->tx_channel_id = !ctx->dev->tx_channel_id;
8a13449f 1355 ctx->dev->rx_channel_id = 0;
324429d7
HS		 1356 spin_unlock(&ctx->dev->lock_chcr_dev);
1357 }
1358out:
1359 return err;
1360}
1361
1362static int chcr_cra_init(struct crypto_tfm *tfm)
1363{
b8fd1f41
HJ		 1364 struct crypto_alg *alg = tfm->__crt_alg;
1365 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
1366 struct ablk_ctx *ablkctx = ABLK_CTX(ctx);
1367
1368 ablkctx->sw_cipher = crypto_alloc_skcipher(alg->cra_name, 0,
1369 CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK);
1370 if (IS_ERR(ablkctx->sw_cipher)) {
1371 pr_err("failed to allocate fallback for %s\n", alg->cra_name);
1372 return PTR_ERR(ablkctx->sw_cipher);
1373 }
d3f1d2f7
HJ		 1374
1375 if (get_cryptoalg_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_XTS) {
1376 /* To update tweak*/
1377 ablkctx->aes_generic = crypto_alloc_cipher("aes-generic", 0, 0);
1378 if (IS_ERR(ablkctx->aes_generic)) {
1379 pr_err("failed to allocate aes cipher for tweak\n");
1380 return PTR_ERR(ablkctx->aes_generic);
1381 }
1382 } else
1383 ablkctx->aes_generic = NULL;
1384
324429d7
HS		 1385 tfm->crt_ablkcipher.reqsize = sizeof(struct chcr_blkcipher_req_ctx);
1386 return chcr_device_init(crypto_tfm_ctx(tfm));
1387}
1388
b8fd1f41
HJ		 1389static int chcr_rfc3686_init(struct crypto_tfm *tfm)
1390{
1391 struct crypto_alg *alg = tfm->__crt_alg;
1392 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
1393 struct ablk_ctx *ablkctx = ABLK_CTX(ctx);
1394
1395 /*RFC3686 initialises IV counter value to 1, rfc3686(ctr(aes))
1396 * cannot be used as fallback in chcr_handle_cipher_response
1397 */
1398 ablkctx->sw_cipher = crypto_alloc_skcipher("ctr(aes)", 0,
1399 CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK);
1400 if (IS_ERR(ablkctx->sw_cipher)) {
1401 pr_err("failed to allocate fallback for %s\n", alg->cra_name);
1402 return PTR_ERR(ablkctx->sw_cipher);
1403 }
1404 tfm->crt_ablkcipher.reqsize = sizeof(struct chcr_blkcipher_req_ctx);
1405 return chcr_device_init(crypto_tfm_ctx(tfm));
1406}
1407
1408
1409static void chcr_cra_exit(struct crypto_tfm *tfm)
1410{
1411 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
1412 struct ablk_ctx *ablkctx = ABLK_CTX(ctx);
1413
1414 crypto_free_skcipher(ablkctx->sw_cipher);
d3f1d2f7
HJ		 1415 if (ablkctx->aes_generic)
1416 crypto_free_cipher(ablkctx->aes_generic);
b8fd1f41
HJ		 1417}
1418
324429d7
HS		 1419static int get_alg_config(struct algo_param *params,
1420 unsigned int auth_size)
1421{
1422 switch (auth_size) {
1423 case SHA1_DIGEST_SIZE:
1424 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_160;
1425 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA1;
1426 params->result_size = SHA1_DIGEST_SIZE;
1427 break;
1428 case SHA224_DIGEST_SIZE:
1429 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256;
1430 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA224;
1431 params->result_size = SHA256_DIGEST_SIZE;
1432 break;
1433 case SHA256_DIGEST_SIZE:
1434 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256;
1435 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA256;
1436 params->result_size = SHA256_DIGEST_SIZE;
1437 break;
1438 case SHA384_DIGEST_SIZE:
1439 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_512;
1440 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA512_384;
1441 params->result_size = SHA512_DIGEST_SIZE;
1442 break;
1443 case SHA512_DIGEST_SIZE:
1444 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_512;
1445 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA512_512;
1446 params->result_size = SHA512_DIGEST_SIZE;
1447 break;
1448 default:
1449 pr_err("chcr : ERROR, unsupported digest size\n");
1450 return -EINVAL;
1451 }
1452 return 0;
1453}
1454
e7922729 1455static inline void chcr_free_shash(struct crypto_shash *base_hash)
324429d7 1456{
e7922729 1457 crypto_free_shash(base_hash);
324429d7
HS		 1458}
1459
1460/**
358961d1 1461 * create_hash_wr - Create hash work request
324429d7
HS		 1462 * @req - Cipher req base
1463 */
358961d1 1464static struct sk_buff *create_hash_wr(struct ahash_request *req,
2debd332 1465 struct hash_wr_param *param)
324429d7
HS		 1466{
1467 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1468 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
2f47d580 1469 struct hmac_ctx *hmacctx = HMAC_CTX(h_ctx(tfm));
324429d7 1470 struct sk_buff *skb = NULL;
2f47d580 1471 struct uld_ctx *u_ctx = ULD_CTX(h_ctx(tfm));
358961d1 1472 struct chcr_wr *chcr_req;
2f47d580 1473 struct ulptx_sgl *ulptx;
5110e655
HJ		 1474 unsigned int nents = 0, transhdr_len;
1475 unsigned int temp = 0;
358961d1
HJ		 1476 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
1477 GFP_ATOMIC;
2f47d580
HJ		 1478 struct adapter *adap = padap(h_ctx(tfm)->dev);
1479 int error = 0;
324429d7 1480
5110e655
HJ		 1481 transhdr_len = HASH_TRANSHDR_SIZE(param->kctx_len);
1482 req_ctx->hctx_wr.imm = (transhdr_len + param->bfr_len +
1483 param->sg_len) <= SGE_MAX_WR_LEN;
1484 nents = sg_nents_xlen(req_ctx->hctx_wr.srcsg, param->sg_len,
1485 CHCR_SRC_SG_SIZE, req_ctx->hctx_wr.src_ofst);
2f47d580 1486 nents += param->bfr_len ? 1 : 0;
5110e655
HJ		 1487 transhdr_len += req_ctx->hctx_wr.imm ? roundup(param->bfr_len +
1488 param->sg_len, 16) : (sgl_len(nents) * 8);
125d01ca 1489 transhdr_len = roundup(transhdr_len, 16);
2f47d580 1490
5110e655 1491 skb = alloc_skb(transhdr_len, flags);
324429d7 1492 if (!skb)
2f47d580 1493 return ERR_PTR(-ENOMEM);
de77b966 1494 chcr_req = __skb_put_zero(skb, transhdr_len);
324429d7 1495
358961d1 1496 chcr_req->sec_cpl.op_ivinsrtofst =
2f47d580 1497 FILL_SEC_CPL_OP_IVINSR(h_ctx(tfm)->dev->rx_channel_id, 2, 0);
358961d1 1498 chcr_req->sec_cpl.pldlen = htonl(param->bfr_len + param->sg_len);
324429d7 1499
358961d1 1500 chcr_req->sec_cpl.aadstart_cipherstop_hi =
324429d7 1501 FILL_SEC_CPL_CIPHERSTOP_HI(0, 0, 0, 0);
358961d1 1502 chcr_req->sec_cpl.cipherstop_lo_authinsert =
324429d7 1503 FILL_SEC_CPL_AUTHINSERT(0, 1, 0, 0);
358961d1 1504 chcr_req->sec_cpl.seqno_numivs =
324429d7 1505 FILL_SEC_CPL_SCMD0_SEQNO(0, 0, 0, param->alg_prm.auth_mode,
358961d1 1506 param->opad_needed, 0);
324429d7 1507
358961d1 1508 chcr_req->sec_cpl.ivgen_hdrlen =
324429d7
HS		 1509 FILL_SEC_CPL_IVGEN_HDRLEN(param->last, param->more, 0, 1, 0, 0);
1510
358961d1
HJ		 1511 memcpy(chcr_req->key_ctx.key, req_ctx->partial_hash,
1512 param->alg_prm.result_size);
324429d7
HS		 1513
1514 if (param->opad_needed)
358961d1
HJ		 1515 memcpy(chcr_req->key_ctx.key +
1516 ((param->alg_prm.result_size <= 32) ? 32 :
1517 CHCR_HASH_MAX_DIGEST_SIZE),
324429d7
HS		 1518 hmacctx->opad, param->alg_prm.result_size);
1519
358961d1 1520 chcr_req->key_ctx.ctx_hdr = FILL_KEY_CTX_HDR(CHCR_KEYCTX_NO_KEY,
324429d7
HS		 1521 param->alg_prm.mk_size, 0,
1522 param->opad_needed,
5110e655 1523 ((param->kctx_len +
358961d1
HJ		 1524 sizeof(chcr_req->key_ctx)) >> 4));
1525 chcr_req->sec_cpl.scmd1 = cpu_to_be64((u64)param->scmd1);
5110e655 1526 ulptx = (struct ulptx_sgl *)((u8 *)(chcr_req + 1) + param->kctx_len +
2f47d580
HJ		 1527 DUMMY_BYTES);
1528 if (param->bfr_len != 0) {
5110e655
HJ		 1529 req_ctx->hctx_wr.dma_addr =
1530 dma_map_single(&u_ctx->lldi.pdev->dev, req_ctx->reqbfr,
1531 param->bfr_len, DMA_TO_DEVICE);
2f47d580 1532 if (dma_mapping_error(&u_ctx->lldi.pdev->dev,
5110e655 1533 req_ctx->hctx_wr. dma_addr)) {
2f47d580
HJ		 1534 error = -ENOMEM;
1535 goto err;
1536 }
5110e655 1537 req_ctx->hctx_wr.dma_len = param->bfr_len;
2f47d580 1538 } else {
5110e655 1539 req_ctx->hctx_wr.dma_addr = 0;
2f47d580
HJ		 1540 }
1541 chcr_add_hash_src_ent(req, ulptx, param);
1542 /* Request upto max wr size */
5110e655
HJ		 1543 temp = param->kctx_len + DUMMY_BYTES + (req_ctx->hctx_wr.imm ?
1544 (param->sg_len + param->bfr_len) : 0);
ee0863ba 1545 atomic_inc(&adap->chcr_stats.digest_rqst);
5110e655
HJ		 1546 create_wreq(h_ctx(tfm), chcr_req, &req->base, req_ctx->hctx_wr.imm,
1547 param->hash_size, transhdr_len,
2f47d580 1548 temp, 0);
5110e655 1549 req_ctx->hctx_wr.skb = skb;
324429d7 1550 return skb;
2f47d580
HJ		 1551err:
1552 kfree_skb(skb);
1553 return ERR_PTR(error);
324429d7
HS		 1554}
1555
1556static int chcr_ahash_update(struct ahash_request *req)
1557{
1558 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1559 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
324429d7
HS		 1560 struct uld_ctx *u_ctx = NULL;
1561 struct sk_buff *skb;
1562 u8 remainder = 0, bs;
1563 unsigned int nbytes = req->nbytes;
1564 struct hash_wr_param params;
6faa0f57 1565 int error, isfull = 0;
324429d7
HS		 1566
1567 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
2f47d580 1568 u_ctx = ULD_CTX(h_ctx(rtfm));
324429d7 1569 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
2f47d580 1570 h_ctx(rtfm)->tx_qidx))) {
6faa0f57 1571 isfull = 1;
324429d7 1572 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
6faa0f57 1573 return -ENOSPC;
324429d7
HS		 1574 }
1575
44fce12a
HJ		 1576 if (nbytes + req_ctx->reqlen >= bs) {
1577 remainder = (nbytes + req_ctx->reqlen) % bs;
1578 nbytes = nbytes + req_ctx->reqlen - remainder;
324429d7 1579 } else {
44fce12a
HJ		 1580 sg_pcopy_to_buffer(req->src, sg_nents(req->src), req_ctx->reqbfr
1581 + req_ctx->reqlen, nbytes, 0);
1582 req_ctx->reqlen += nbytes;
324429d7
HS		 1583 return 0;
1584 }
5110e655 1585 chcr_init_hctx_per_wr(req_ctx);
2f47d580
HJ		 1586 error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req);
1587 if (error)
1588 return -ENOMEM;
5110e655
HJ		 1589 get_alg_config(&params.alg_prm, crypto_ahash_digestsize(rtfm));
1590 params.kctx_len = roundup(params.alg_prm.result_size, 16);
1591 params.sg_len = chcr_hash_ent_in_wr(req->src, !!req_ctx->reqlen,
1592 HASH_SPACE_LEFT(params.kctx_len), 0);
1593 if (params.sg_len > req->nbytes)
1594 params.sg_len = req->nbytes;
1595 params.sg_len = rounddown(params.sg_len + req_ctx->reqlen, bs) -
1596 req_ctx->reqlen;
324429d7
HS		 1597 params.opad_needed = 0;
1598 params.more = 1;
1599 params.last = 0;
44fce12a 1600 params.bfr_len = req_ctx->reqlen;
324429d7 1601 params.scmd1 = 0;
5110e655
HJ		 1602 req_ctx->hctx_wr.srcsg = req->src;
1603
1604 params.hash_size = params.alg_prm.result_size;
324429d7 1605 req_ctx->data_len += params.sg_len + params.bfr_len;
358961d1 1606 skb = create_hash_wr(req, &params);
2f47d580
HJ		 1607 if (IS_ERR(skb)) {
1608 error = PTR_ERR(skb);
1609 goto unmap;
1610 }
324429d7 1611
5110e655 1612 req_ctx->hctx_wr.processed += params.sg_len;
44fce12a 1613 if (remainder) {
44fce12a 1614 /* Swap buffers */
abfa2b37 1615 swap(req_ctx->reqbfr, req_ctx->skbfr);
324429d7 1616 sg_pcopy_to_buffer(req->src, sg_nents(req->src),
44fce12a 1617 req_ctx->reqbfr, remainder, req->nbytes -
324429d7 1618 remainder);
44fce12a
HJ		 1619 }
1620 req_ctx->reqlen = remainder;
324429d7 1621 skb->dev = u_ctx->lldi.ports[0];
2f47d580 1622 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx);
324429d7
HS		 1623 chcr_send_wr(skb);
1624
6faa0f57 1625 return isfull ? -EBUSY : -EINPROGRESS;
2f47d580
HJ		 1626unmap:
1627 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
1628 return error;
324429d7
HS		 1629}
1630
1631static void create_last_hash_block(char *bfr_ptr, unsigned int bs, u64 scmd1)
1632{
1633 memset(bfr_ptr, 0, bs);
1634 *bfr_ptr = 0x80;
1635 if (bs == 64)
1636 *(__be64 *)(bfr_ptr + 56) = cpu_to_be64(scmd1 << 3);
1637 else
1638 *(__be64 *)(bfr_ptr + 120) = cpu_to_be64(scmd1 << 3);
1639}
1640
1641static int chcr_ahash_final(struct ahash_request *req)
1642{
1643 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1644 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
324429d7
HS		 1645 struct hash_wr_param params;
1646 struct sk_buff *skb;
1647 struct uld_ctx *u_ctx = NULL;
1648 u8 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1649
5110e655 1650 chcr_init_hctx_per_wr(req_ctx);
2f47d580 1651 u_ctx = ULD_CTX(h_ctx(rtfm));
324429d7
HS		 1652 if (is_hmac(crypto_ahash_tfm(rtfm)))
1653 params.opad_needed = 1;
1654 else
1655 params.opad_needed = 0;
1656 params.sg_len = 0;
5110e655 1657 req_ctx->hctx_wr.isfinal = 1;
324429d7 1658 get_alg_config(&params.alg_prm, crypto_ahash_digestsize(rtfm));
5110e655
HJ		 1659 params.kctx_len = roundup(params.alg_prm.result_size, 16);
1660 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1661 params.opad_needed = 1;
1662 params.kctx_len *= 2;
1663 } else {
1664 params.opad_needed = 0;
1665 }
1666
1667 req_ctx->hctx_wr.result = 1;
44fce12a 1668 params.bfr_len = req_ctx->reqlen;
324429d7 1669 req_ctx->data_len += params.bfr_len + params.sg_len;
5110e655 1670 req_ctx->hctx_wr.srcsg = req->src;
44fce12a
HJ		 1671 if (req_ctx->reqlen == 0) {
1672 create_last_hash_block(req_ctx->reqbfr, bs, req_ctx->data_len);
324429d7
HS		 1673 params.last = 0;
1674 params.more = 1;
1675 params.scmd1 = 0;
1676 params.bfr_len = bs;
1677
1678 } else {
1679 params.scmd1 = req_ctx->data_len;
1680 params.last = 1;
1681 params.more = 0;
1682 }
5110e655 1683 params.hash_size = crypto_ahash_digestsize(rtfm);
358961d1 1684 skb = create_hash_wr(req, &params);
40cdbe1a
YG		 1685 if (IS_ERR(skb))
1686 return PTR_ERR(skb);
5110e655 1687 req_ctx->reqlen = 0;
324429d7 1688 skb->dev = u_ctx->lldi.ports[0];
2f47d580 1689 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx);
324429d7
HS		 1690 chcr_send_wr(skb);
1691 return -EINPROGRESS;
1692}
1693
1694static int chcr_ahash_finup(struct ahash_request *req)
1695{
1696 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1697 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
324429d7
HS		 1698 struct uld_ctx *u_ctx = NULL;
1699 struct sk_buff *skb;
1700 struct hash_wr_param params;
1701 u8 bs;
6faa0f57 1702 int error, isfull = 0;
324429d7
HS		 1703
1704 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
2f47d580 1705 u_ctx = ULD_CTX(h_ctx(rtfm));
324429d7
HS		 1706
1707 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
2f47d580 1708 h_ctx(rtfm)->tx_qidx))) {
6faa0f57 1709 isfull = 1;
324429d7 1710 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
6faa0f57 1711 return -ENOSPC;
324429d7 1712 }
5110e655
HJ		 1713 chcr_init_hctx_per_wr(req_ctx);
1714 error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req);
1715 if (error)
1716 return -ENOMEM;
324429d7 1717
5110e655
HJ		 1718 get_alg_config(&params.alg_prm, crypto_ahash_digestsize(rtfm));
1719 params.kctx_len = roundup(params.alg_prm.result_size, 16);
1720 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1721 params.kctx_len *= 2;
324429d7 1722 params.opad_needed = 1;
5110e655 1723 } else {
324429d7 1724 params.opad_needed = 0;
5110e655 1725 }
324429d7 1726
5110e655
HJ		 1727 params.sg_len = chcr_hash_ent_in_wr(req->src, !!req_ctx->reqlen,
1728 HASH_SPACE_LEFT(params.kctx_len), 0);
1729 if (params.sg_len < req->nbytes) {
1730 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1731 params.kctx_len /= 2;
1732 params.opad_needed = 0;
1733 }
1734 params.last = 0;
1735 params.more = 1;
1736 params.sg_len = rounddown(params.sg_len + req_ctx->reqlen, bs)
1737 - req_ctx->reqlen;
1738 params.hash_size = params.alg_prm.result_size;
1739 params.scmd1 = 0;
1740 } else {
1741 params.last = 1;
1742 params.more = 0;
1743 params.sg_len = req->nbytes;
1744 params.hash_size = crypto_ahash_digestsize(rtfm);
1745 params.scmd1 = req_ctx->data_len + req_ctx->reqlen +
1746 params.sg_len;
1747 }
44fce12a 1748 params.bfr_len = req_ctx->reqlen;
324429d7 1749 req_ctx->data_len += params.bfr_len + params.sg_len;
5110e655
HJ		 1750 req_ctx->hctx_wr.result = 1;
1751 req_ctx->hctx_wr.srcsg = req->src;
44fce12a
HJ		 1752 if ((req_ctx->reqlen + req->nbytes) == 0) {
1753 create_last_hash_block(req_ctx->reqbfr, bs, req_ctx->data_len);
324429d7
HS		 1754 params.last = 0;
1755 params.more = 1;
1756 params.scmd1 = 0;
1757 params.bfr_len = bs;
324429d7 1758 }
358961d1 1759 skb = create_hash_wr(req, &params);
2f47d580
HJ		 1760 if (IS_ERR(skb)) {
1761 error = PTR_ERR(skb);
1762 goto unmap;
1763 }
5110e655
HJ		 1764 req_ctx->reqlen = 0;
1765 req_ctx->hctx_wr.processed += params.sg_len;
324429d7 1766 skb->dev = u_ctx->lldi.ports[0];
2f47d580 1767 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx);
324429d7
HS		 1768 chcr_send_wr(skb);
1769
6faa0f57 1770 return isfull ? -EBUSY : -EINPROGRESS;
2f47d580
HJ		 1771unmap:
1772 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
1773 return error;
324429d7
HS		 1774}
1775
1776static int chcr_ahash_digest(struct ahash_request *req)
1777{
1778 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1779 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
324429d7
HS		 1780 struct uld_ctx *u_ctx = NULL;
1781 struct sk_buff *skb;
1782 struct hash_wr_param params;
1783 u8 bs;
6faa0f57 1784 int error, isfull = 0;
324429d7
HS		 1785
1786 rtfm->init(req);
1787 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1788
2f47d580 1789 u_ctx = ULD_CTX(h_ctx(rtfm));
324429d7 1790 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
2f47d580 1791 h_ctx(rtfm)->tx_qidx))) {
6faa0f57 1792 isfull = 1;
324429d7 1793 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
6faa0f57 1794 return -ENOSPC;
324429d7
HS		 1795 }
1796
5110e655 1797 chcr_init_hctx_per_wr(req_ctx);
2f47d580
HJ		 1798 error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req);
1799 if (error)
1800 return -ENOMEM;
324429d7 1801
324429d7 1802 get_alg_config(&params.alg_prm, crypto_ahash_digestsize(rtfm));
5110e655
HJ		 1803 params.kctx_len = roundup(params.alg_prm.result_size, 16);
1804 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1805 params.kctx_len *= 2;
1806 params.opad_needed = 1;
1807 } else {
1808 params.opad_needed = 0;
1809 }
1810 params.sg_len = chcr_hash_ent_in_wr(req->src, !!req_ctx->reqlen,
1811 HASH_SPACE_LEFT(params.kctx_len), 0);
1812 if (params.sg_len < req->nbytes) {
1813 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1814 params.kctx_len /= 2;
1815 params.opad_needed = 0;
1816 }
1817 params.last = 0;
1818 params.more = 1;
1819 params.scmd1 = 0;
1820 params.sg_len = rounddown(params.sg_len, bs);
1821 params.hash_size = params.alg_prm.result_size;
1822 } else {
1823 params.sg_len = req->nbytes;
1824 params.hash_size = crypto_ahash_digestsize(rtfm);
1825 params.last = 1;
1826 params.more = 0;
1827 params.scmd1 = req->nbytes + req_ctx->data_len;
1828
1829 }
1830 params.bfr_len = 0;
1831 req_ctx->hctx_wr.result = 1;
1832 req_ctx->hctx_wr.srcsg = req->src;
324429d7
HS		 1833 req_ctx->data_len += params.bfr_len + params.sg_len;
1834
44fce12a
HJ		 1835 if (req->nbytes == 0) {
1836 create_last_hash_block(req_ctx->reqbfr, bs, 0);
324429d7
HS		 1837 params.more = 1;
1838 params.bfr_len = bs;
1839 }
1840
358961d1 1841 skb = create_hash_wr(req, &params);
2f47d580
HJ		 1842 if (IS_ERR(skb)) {
1843 error = PTR_ERR(skb);
1844 goto unmap;
1845 }
5110e655 1846 req_ctx->hctx_wr.processed += params.sg_len;
324429d7 1847 skb->dev = u_ctx->lldi.ports[0];
2f47d580 1848 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx);
324429d7 1849 chcr_send_wr(skb);
6faa0f57 1850 return isfull ? -EBUSY : -EINPROGRESS;
2f47d580
HJ		 1851unmap:
1852 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
1853 return error;
324429d7
HS		 1854}
1855
6f76672b
HJ		 1856static int chcr_ahash_continue(struct ahash_request *req)
1857{
1858 struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req);
1859 struct chcr_hctx_per_wr *hctx_wr = &reqctx->hctx_wr;
1860 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
1861 struct uld_ctx *u_ctx = NULL;
1862 struct sk_buff *skb;
1863 struct hash_wr_param params;
1864 u8 bs;
1865 int error;
1866
1867 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1868 u_ctx = ULD_CTX(h_ctx(rtfm));
6f76672b
HJ		 1869 get_alg_config(&params.alg_prm, crypto_ahash_digestsize(rtfm));
1870 params.kctx_len = roundup(params.alg_prm.result_size, 16);
1871 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1872 params.kctx_len *= 2;
1873 params.opad_needed = 1;
1874 } else {
1875 params.opad_needed = 0;
1876 }
1877 params.sg_len = chcr_hash_ent_in_wr(hctx_wr->srcsg, 0,
1878 HASH_SPACE_LEFT(params.kctx_len),
1879 hctx_wr->src_ofst);
1880 if ((params.sg_len + hctx_wr->processed) > req->nbytes)
1881 params.sg_len = req->nbytes - hctx_wr->processed;
1882 if (!hctx_wr->result ||
1883 ((params.sg_len + hctx_wr->processed) < req->nbytes)) {
1884 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1885 params.kctx_len /= 2;
1886 params.opad_needed = 0;
1887 }
1888 params.last = 0;
1889 params.more = 1;
1890 params.sg_len = rounddown(params.sg_len, bs);
1891 params.hash_size = params.alg_prm.result_size;
1892 params.scmd1 = 0;
1893 } else {
1894 params.last = 1;
1895 params.more = 0;
1896 params.hash_size = crypto_ahash_digestsize(rtfm);
1897 params.scmd1 = reqctx->data_len + params.sg_len;
1898 }
1899 params.bfr_len = 0;
1900 reqctx->data_len += params.sg_len;
1901 skb = create_hash_wr(req, &params);
1902 if (IS_ERR(skb)) {
1903 error = PTR_ERR(skb);
1904 goto err;
1905 }
1906 hctx_wr->processed += params.sg_len;
1907 skb->dev = u_ctx->lldi.ports[0];
1908 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx);
1909 chcr_send_wr(skb);
1910 return 0;
1911err:
1912 return error;
1913}
1914
1915static inline void chcr_handle_ahash_resp(struct ahash_request *req,
1916 unsigned char *input,
1917 int err)
1918{
1919 struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req);
1920 struct chcr_hctx_per_wr *hctx_wr = &reqctx->hctx_wr;
1921 int digestsize, updated_digestsize;
1922 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
1923 struct uld_ctx *u_ctx = ULD_CTX(h_ctx(tfm));
1924
1925 if (input == NULL)
1926 goto out;
1927 digestsize = crypto_ahash_digestsize(crypto_ahash_reqtfm(req));
1928 updated_digestsize = digestsize;
1929 if (digestsize == SHA224_DIGEST_SIZE)
1930 updated_digestsize = SHA256_DIGEST_SIZE;
1931 else if (digestsize == SHA384_DIGEST_SIZE)
1932 updated_digestsize = SHA512_DIGEST_SIZE;
1933
1934 if (hctx_wr->dma_addr) {
1935 dma_unmap_single(&u_ctx->lldi.pdev->dev, hctx_wr->dma_addr,
1936 hctx_wr->dma_len, DMA_TO_DEVICE);
1937 hctx_wr->dma_addr = 0;
1938 }
1939 if (hctx_wr->isfinal || ((hctx_wr->processed + reqctx->reqlen) ==
1940 req->nbytes)) {
1941 if (hctx_wr->result == 1) {
1942 hctx_wr->result = 0;
1943 memcpy(req->result, input + sizeof(struct cpl_fw6_pld),
1944 digestsize);
1945 } else {
1946 memcpy(reqctx->partial_hash,
1947 input + sizeof(struct cpl_fw6_pld),
1948 updated_digestsize);
1949
1950 }
1951 goto unmap;
1952 }
1953 memcpy(reqctx->partial_hash, input + sizeof(struct cpl_fw6_pld),
1954 updated_digestsize);
1955
1956 err = chcr_ahash_continue(req);
1957 if (err)
1958 goto unmap;
1959 return;
1960unmap:
1961 if (hctx_wr->is_sg_map)
1962 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
1963
1964
1965out:
1966 req->base.complete(&req->base, err);
1967}
1968
1969/*
1970 * chcr_handle_resp - Unmap the DMA buffers associated with the request
1971 * @req: crypto request
1972 */
1973int chcr_handle_resp(struct crypto_async_request *req, unsigned char *input,
1974 int err)
1975{
1976 struct crypto_tfm *tfm = req->tfm;
1977 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
1978 struct adapter *adap = padap(ctx->dev);
1979
1980 switch (tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK) {
1981 case CRYPTO_ALG_TYPE_AEAD:
1982 chcr_handle_aead_resp(aead_request_cast(req), input, err);
1983 break;
1984
1985 case CRYPTO_ALG_TYPE_ABLKCIPHER:
1986 err = chcr_handle_cipher_resp(ablkcipher_request_cast(req),
1987 input, err);
1988 break;
1989
1990 case CRYPTO_ALG_TYPE_AHASH:
1991 chcr_handle_ahash_resp(ahash_request_cast(req), input, err);
1992 }
1993 atomic_inc(&adap->chcr_stats.complete);
1994 return err;
1995}
324429d7
HS		 1996static int chcr_ahash_export(struct ahash_request *areq, void *out)
1997{
1998 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
1999 struct chcr_ahash_req_ctx *state = out;
2000
44fce12a 2001 state->reqlen = req_ctx->reqlen;
324429d7 2002 state->data_len = req_ctx->data_len;
44fce12a 2003 memcpy(state->bfr1, req_ctx->reqbfr, req_ctx->reqlen);
324429d7
HS		 2004 memcpy(state->partial_hash, req_ctx->partial_hash,
2005 CHCR_HASH_MAX_DIGEST_SIZE);
5110e655 2006 chcr_init_hctx_per_wr(state);
44fce12a 2007 return 0;
324429d7
HS		 2008}
2009
2010static int chcr_ahash_import(struct ahash_request *areq, const void *in)
2011{
2012 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
2013 struct chcr_ahash_req_ctx *state = (struct chcr_ahash_req_ctx *)in;
2014
44fce12a 2015 req_ctx->reqlen = state->reqlen;
324429d7 2016 req_ctx->data_len = state->data_len;
44fce12a
HJ		 2017 req_ctx->reqbfr = req_ctx->bfr1;
2018 req_ctx->skbfr = req_ctx->bfr2;
2019 memcpy(req_ctx->bfr1, state->bfr1, CHCR_HASH_MAX_BLOCK_SIZE_128);
324429d7
HS		 2020 memcpy(req_ctx->partial_hash, state->partial_hash,
2021 CHCR_HASH_MAX_DIGEST_SIZE);
5110e655 2022 chcr_init_hctx_per_wr(req_ctx);
324429d7
HS		 2023 return 0;
2024}
2025
2026static int chcr_ahash_setkey(struct crypto_ahash *tfm, const u8 *key,
2027 unsigned int keylen)
2028{
2f47d580 2029 struct hmac_ctx *hmacctx = HMAC_CTX(h_ctx(tfm));
324429d7
HS		 2030 unsigned int digestsize = crypto_ahash_digestsize(tfm);
2031 unsigned int bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm));
2032 unsigned int i, err = 0, updated_digestsize;
2033
e7922729
HJ		 2034 SHASH_DESC_ON_STACK(shash, hmacctx->base_hash);
2035
2036 /* use the key to calculate the ipad and opad. ipad will sent with the
324429d7
HS		 2037 * first request's data. opad will be sent with the final hash result
2038 * ipad in hmacctx->ipad and opad in hmacctx->opad location
2039 */
e7922729
HJ		 2040 shash->tfm = hmacctx->base_hash;
2041 shash->flags = crypto_shash_get_flags(hmacctx->base_hash);
324429d7 2042 if (keylen > bs) {
e7922729 2043 err = crypto_shash_digest(shash, key, keylen,
324429d7
HS		 2044 hmacctx->ipad);
2045 if (err)
2046 goto out;
2047 keylen = digestsize;
2048 } else {
2049 memcpy(hmacctx->ipad, key, keylen);
2050 }
2051 memset(hmacctx->ipad + keylen, 0, bs - keylen);
2052 memcpy(hmacctx->opad, hmacctx->ipad, bs);
2053
2054 for (i = 0; i < bs / sizeof(int); i++) {
2055 *((unsigned int *)(&hmacctx->ipad) + i) ^= IPAD_DATA;
2056 *((unsigned int *)(&hmacctx->opad) + i) ^= OPAD_DATA;
2057 }
2058
2059 updated_digestsize = digestsize;
2060 if (digestsize == SHA224_DIGEST_SIZE)
2061 updated_digestsize = SHA256_DIGEST_SIZE;
2062 else if (digestsize == SHA384_DIGEST_SIZE)
2063 updated_digestsize = SHA512_DIGEST_SIZE;
e7922729 2064 err = chcr_compute_partial_hash(shash, hmacctx->ipad,
324429d7
HS		 2065 hmacctx->ipad, digestsize);
2066 if (err)
2067 goto out;
2068 chcr_change_order(hmacctx->ipad, updated_digestsize);
2069
e7922729 2070 err = chcr_compute_partial_hash(shash, hmacctx->opad,
324429d7
HS		 2071 hmacctx->opad, digestsize);
2072 if (err)
2073 goto out;
2074 chcr_change_order(hmacctx->opad, updated_digestsize);
2075out:
2076 return err;
2077}
2078
b8fd1f41 2079static int chcr_aes_xts_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
324429d7
HS		 2080 unsigned int key_len)
2081{
2f47d580 2082 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
324429d7 2083 unsigned short context_size = 0;
b8fd1f41 2084 int err;
324429d7 2085
b8fd1f41
HJ		 2086 err = chcr_cipher_fallback_setkey(cipher, key, key_len);
2087 if (err)
2088 goto badkey_err;
cc1b156d
HJ		 2089
2090 memcpy(ablkctx->key, key, key_len);
2091 ablkctx->enckey_len = key_len;
2092 get_aes_decrypt_key(ablkctx->rrkey, ablkctx->key, key_len << 2);
2093 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD + key_len) >> 4;
2094 ablkctx->key_ctx_hdr =
2095 FILL_KEY_CTX_HDR((key_len == AES_KEYSIZE_256) ?
2096 CHCR_KEYCTX_CIPHER_KEY_SIZE_128 :
2097 CHCR_KEYCTX_CIPHER_KEY_SIZE_256,
2098 CHCR_KEYCTX_NO_KEY, 1,
2099 0, context_size);
2100 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_XTS;
2101 return 0;
b8fd1f41
HJ		 2102badkey_err:
2103 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
2104 ablkctx->enckey_len = 0;
2105
2106 return err;
324429d7
HS		 2107}
2108
2109static int chcr_sha_init(struct ahash_request *areq)
2110{
2111 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
2112 struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
2113 int digestsize = crypto_ahash_digestsize(tfm);
2114
2115 req_ctx->data_len = 0;
44fce12a
HJ		 2116 req_ctx->reqlen = 0;
2117 req_ctx->reqbfr = req_ctx->bfr1;
2118 req_ctx->skbfr = req_ctx->bfr2;
324429d7 2119 copy_hash_init_values(req_ctx->partial_hash, digestsize);
5110e655 2120
324429d7
HS		 2121 return 0;
2122}
2123
2124static int chcr_sha_cra_init(struct crypto_tfm *tfm)
2125{
2126 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
2127 sizeof(struct chcr_ahash_req_ctx));
2128 return chcr_device_init(crypto_tfm_ctx(tfm));
2129}
2130
2131static int chcr_hmac_init(struct ahash_request *areq)
2132{
2133 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
2134 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(areq);
2f47d580 2135 struct hmac_ctx *hmacctx = HMAC_CTX(h_ctx(rtfm));
324429d7
HS		 2136 unsigned int digestsize = crypto_ahash_digestsize(rtfm);
2137 unsigned int bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
2138
2139 chcr_sha_init(areq);
2140 req_ctx->data_len = bs;
2141 if (is_hmac(crypto_ahash_tfm(rtfm))) {
2142 if (digestsize == SHA224_DIGEST_SIZE)
2143 memcpy(req_ctx->partial_hash, hmacctx->ipad,
2144 SHA256_DIGEST_SIZE);
2145 else if (digestsize == SHA384_DIGEST_SIZE)
2146 memcpy(req_ctx->partial_hash, hmacctx->ipad,
2147 SHA512_DIGEST_SIZE);
2148 else
2149 memcpy(req_ctx->partial_hash, hmacctx->ipad,
2150 digestsize);
2151 }
2152 return 0;
2153}
2154
2155static int chcr_hmac_cra_init(struct crypto_tfm *tfm)
2156{
2157 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
2158 struct hmac_ctx *hmacctx = HMAC_CTX(ctx);
2159 unsigned int digestsize =
2160 crypto_ahash_digestsize(__crypto_ahash_cast(tfm));
2161
2162 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
2163 sizeof(struct chcr_ahash_req_ctx));
e7922729
HJ		 2164 hmacctx->base_hash = chcr_alloc_shash(digestsize);
2165 if (IS_ERR(hmacctx->base_hash))
2166 return PTR_ERR(hmacctx->base_hash);
324429d7
HS		 2167 return chcr_device_init(crypto_tfm_ctx(tfm));
2168}
2169
324429d7
HS		 2170static void chcr_hmac_cra_exit(struct crypto_tfm *tfm)
2171{
2172 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
2173 struct hmac_ctx *hmacctx = HMAC_CTX(ctx);
2174
e7922729
HJ		 2175 if (hmacctx->base_hash) {
2176 chcr_free_shash(hmacctx->base_hash);
2177 hmacctx->base_hash = NULL;
324429d7
HS		 2178 }
2179}
2180
2f47d580
HJ		 2181static int chcr_aead_common_init(struct aead_request *req,
2182 unsigned short op_type)
2debd332 2183{
2f47d580
HJ		 2184 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2185 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2186 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2187 int error = -EINVAL;
2f47d580 2188 unsigned int authsize = crypto_aead_authsize(tfm);
2debd332 2189
2f47d580
HJ		 2190 /* validate key size */
2191 if (aeadctx->enckey_len == 0)
2192 goto err;
2193 if (op_type && req->cryptlen < authsize)
2194 goto err;
2195 error = chcr_aead_dma_map(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev, req,
2196 op_type);
2197 if (error) {
2198 error = -ENOMEM;
2199 goto err;
2200 }
2201 reqctx->aad_nents = sg_nents_xlen(req->src, req->assoclen,
2202 CHCR_SRC_SG_SIZE, 0);
2203 reqctx->src_nents = sg_nents_xlen(req->src, req->cryptlen,
2204 CHCR_SRC_SG_SIZE, req->assoclen);
2205 return 0;
2206err:
2207 return error;
2debd332 2208}
2f47d580
HJ		 2209
2210static int chcr_aead_need_fallback(struct aead_request *req, int dst_nents,
0e93708d
HJ		 2211 int aadmax, int wrlen,
2212 unsigned short op_type)
2213{
2214 unsigned int authsize = crypto_aead_authsize(crypto_aead_reqtfm(req));
2215
2216 if (((req->cryptlen - (op_type ? authsize : 0)) == 0) ||
2f47d580 2217 dst_nents > MAX_DSGL_ENT ||
0e93708d 2218 (req->assoclen > aadmax) ||
2f47d580 2219 (wrlen > SGE_MAX_WR_LEN))
0e93708d
HJ		 2220 return 1;
2221 return 0;
2222}
2debd332 2223
0e93708d
HJ		 2224static int chcr_aead_fallback(struct aead_request *req, unsigned short op_type)
2225{
2226 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2f47d580 2227 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
0e93708d
HJ		 2228 struct aead_request *subreq = aead_request_ctx(req);
2229
2230 aead_request_set_tfm(subreq, aeadctx->sw_cipher);
2231 aead_request_set_callback(subreq, req->base.flags,
2232 req->base.complete, req->base.data);
2233 aead_request_set_crypt(subreq, req->src, req->dst, req->cryptlen,
2234 req->iv);
2235 aead_request_set_ad(subreq, req->assoclen);
2236 return op_type ? crypto_aead_decrypt(subreq) :
2237 crypto_aead_encrypt(subreq);
2238}
2debd332
HJ		 2239
2240static struct sk_buff *create_authenc_wr(struct aead_request *req,
2241 unsigned short qid,
2242 int size,
2243 unsigned short op_type)
2244{
2245 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2f47d580 2246 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2debd332
HJ		 2247 struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx);
2248 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2249 struct sk_buff *skb = NULL;
2250 struct chcr_wr *chcr_req;
2251 struct cpl_rx_phys_dsgl *phys_cpl;
2f47d580
HJ		 2252 struct ulptx_sgl *ulptx;
2253 unsigned int transhdr_len;
3d64bd67 2254 unsigned int dst_size = 0, temp, subtype = get_aead_subtype(tfm);
2f47d580 2255 unsigned int kctx_len = 0, dnents;
2debd332
HJ		 2256 unsigned int assoclen = req->assoclen;
2257 unsigned int authsize = crypto_aead_authsize(tfm);
2f47d580 2258 int error = -EINVAL;
2debd332
HJ		 2259 int null = 0;
2260 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
2261 GFP_ATOMIC;
2f47d580 2262 struct adapter *adap = padap(a_ctx(tfm)->dev);
2debd332 2263
2f47d580
HJ		 2264 if (req->cryptlen == 0)
2265 return NULL;
2debd332 2266
2f47d580 2267 reqctx->b0_dma = 0;
3d64bd67
HJ		 2268 if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL ||
2269 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
2debd332
HJ		 2270 null = 1;
2271 assoclen = 0;
2272 }
2f47d580
HJ		 2273 error = chcr_aead_common_init(req, op_type);
2274 if (error)
2275 return ERR_PTR(error);
5abc8db0
HJ		 2276 dnents = sg_nents_xlen(req->dst, assoclen, CHCR_DST_SG_SIZE, 0);
2277 dnents += sg_nents_xlen(req->dst, req->cryptlen +
2278 (op_type ? -authsize : authsize), CHCR_DST_SG_SIZE,
2279 req->assoclen);
2280 dnents += MIN_AUTH_SG; // For IV
2f47d580
HJ		 2281
2282 dst_size = get_space_for_phys_dsgl(dnents);
2debd332
HJ		 2283 kctx_len = (ntohl(KEY_CONTEXT_CTX_LEN_V(aeadctx->key_ctx_hdr)) << 4)
2284 - sizeof(chcr_req->key_ctx);
2285 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
2f47d580
HJ		 2286 reqctx->imm = (transhdr_len + assoclen + IV + req->cryptlen) <
2287 SGE_MAX_WR_LEN;
125d01ca
HJ		 2288 temp = reqctx->imm ? roundup(assoclen + IV + req->cryptlen, 16)
2289 : (sgl_len(reqctx->src_nents + reqctx->aad_nents
2f47d580
HJ		 2290 + MIN_GCM_SG) * 8);
2291 transhdr_len += temp;
125d01ca 2292 transhdr_len = roundup(transhdr_len, 16);
2f47d580
HJ		 2293
2294 if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE,
2295 transhdr_len, op_type)) {
ee0863ba 2296 atomic_inc(&adap->chcr_stats.fallback);
2f47d580
HJ		 2297 chcr_aead_dma_unmap(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev, req,
2298 op_type);
0e93708d
HJ		 2299 return ERR_PTR(chcr_aead_fallback(req, op_type));
2300 }
2f47d580 2301 skb = alloc_skb(SGE_MAX_WR_LEN, flags);
5fe8c711
HJ		 2302 if (!skb) {
2303 error = -ENOMEM;
2debd332 2304 goto err;
5fe8c711 2305 }
2debd332 2306
de77b966 2307 chcr_req = __skb_put_zero(skb, transhdr_len);
2debd332 2308
2f47d580 2309 temp = (op_type == CHCR_ENCRYPT_OP) ? 0 : authsize;
2debd332
HJ		 2310
2311 /*
2312 * Input order is AAD,IV and Payload. where IV should be included as
2313 * the part of authdata. All other fields should be filled according
2314 * to the hardware spec
2315 */
2316 chcr_req->sec_cpl.op_ivinsrtofst =
2f47d580
HJ		 2317 FILL_SEC_CPL_OP_IVINSR(a_ctx(tfm)->dev->rx_channel_id, 2,
2318 assoclen + 1);
2319 chcr_req->sec_cpl.pldlen = htonl(assoclen + IV + req->cryptlen);
2debd332
HJ		 2320 chcr_req->sec_cpl.aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI(
2321 assoclen ? 1 : 0, assoclen,
2f47d580
HJ		 2322 assoclen + IV + 1,
2323 (temp & 0x1F0) >> 4);
2debd332 2324 chcr_req->sec_cpl.cipherstop_lo_authinsert = FILL_SEC_CPL_AUTHINSERT(
2f47d580
HJ		 2325 temp & 0xF,
2326 null ? 0 : assoclen + IV + 1,
2327 temp, temp);
3d64bd67
HJ		 2328 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL ||
2329 subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA)
2330 temp = CHCR_SCMD_CIPHER_MODE_AES_CTR;
2331 else
2332 temp = CHCR_SCMD_CIPHER_MODE_AES_CBC;
2debd332
HJ		 2333 chcr_req->sec_cpl.seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(op_type,
2334 (op_type == CHCR_ENCRYPT_OP) ? 1 : 0,
3d64bd67 2335 temp,
2debd332 2336 actx->auth_mode, aeadctx->hmac_ctrl,
2f47d580 2337 IV >> 1);
2debd332 2338 chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1,
2f47d580 2339 0, 0, dst_size);
2debd332
HJ		 2340
2341 chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr;
3d64bd67
HJ		 2342 if (op_type == CHCR_ENCRYPT_OP ||
2343 subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
2344 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL)
2debd332
HJ		 2345 memcpy(chcr_req->key_ctx.key, aeadctx->key,
2346 aeadctx->enckey_len);
2347 else
2348 memcpy(chcr_req->key_ctx.key, actx->dec_rrkey,
2349 aeadctx->enckey_len);
2350
125d01ca
HJ		 2351 memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16),
2352 actx->h_iopad, kctx_len - roundup(aeadctx->enckey_len, 16));
3d64bd67
HJ		 2353 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
2354 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
2355 memcpy(reqctx->iv, aeadctx->nonce, CTR_RFC3686_NONCE_SIZE);
2356 memcpy(reqctx->iv + CTR_RFC3686_NONCE_SIZE, req->iv,
2357 CTR_RFC3686_IV_SIZE);
2358 *(__be32 *)(reqctx->iv + CTR_RFC3686_NONCE_SIZE +
2359 CTR_RFC3686_IV_SIZE) = cpu_to_be32(1);
2360 } else {
2361 memcpy(reqctx->iv, req->iv, IV);
2362 }
2debd332 2363 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
2f47d580
HJ		 2364 ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size);
2365 chcr_add_aead_dst_ent(req, phys_cpl, assoclen, op_type, qid);
2366 chcr_add_aead_src_ent(req, ulptx, assoclen, op_type);
ee0863ba 2367 atomic_inc(&adap->chcr_stats.cipher_rqst);
2f47d580
HJ		 2368 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size +
2369 kctx_len + (reqctx->imm ? (assoclen + IV + req->cryptlen) : 0);
2370 create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, size,
2371 transhdr_len, temp, 0);
2debd332 2372 reqctx->skb = skb;
2f47d580 2373 reqctx->op = op_type;
2debd332
HJ		 2374
2375 return skb;
2debd332 2376err:
2f47d580
HJ		 2377 chcr_aead_dma_unmap(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev, req,
2378 op_type);
2379
5fe8c711 2380 return ERR_PTR(error);
2debd332
HJ		 2381}
2382
6dad4e8a
AG		 2383int chcr_aead_dma_map(struct device *dev,
2384 struct aead_request *req,
2385 unsigned short op_type)
2f47d580
HJ		 2386{
2387 int error;
2388 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2389 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2390 unsigned int authsize = crypto_aead_authsize(tfm);
2391 int dst_size;
2392
2393 dst_size = req->assoclen + req->cryptlen + (op_type ?
2394 -authsize : authsize);
2395 if (!req->cryptlen || !dst_size)
2396 return 0;
2397 reqctx->iv_dma = dma_map_single(dev, reqctx->iv, IV,
2398 DMA_BIDIRECTIONAL);
2399 if (dma_mapping_error(dev, reqctx->iv_dma))
2400 return -ENOMEM;
2401
2402 if (req->src == req->dst) {
2403 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2404 DMA_BIDIRECTIONAL);
2405 if (!error)
2406 goto err;
2407 } else {
2408 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2409 DMA_TO_DEVICE);
2410 if (!error)
2411 goto err;
2412 error = dma_map_sg(dev, req->dst, sg_nents(req->dst),
2413 DMA_FROM_DEVICE);
2414 if (!error) {
2415 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2416 DMA_TO_DEVICE);
2417 goto err;
2418 }
2419 }
2420
2421 return 0;
2422err:
2423 dma_unmap_single(dev, reqctx->iv_dma, IV, DMA_BIDIRECTIONAL);
2424 return -ENOMEM;
2425}
2426
6dad4e8a
AG		 2427void chcr_aead_dma_unmap(struct device *dev,
2428 struct aead_request *req,
2429 unsigned short op_type)
2f47d580
HJ		 2430{
2431 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2432 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2433 unsigned int authsize = crypto_aead_authsize(tfm);
2434 int dst_size;
2435
2436 dst_size = req->assoclen + req->cryptlen + (op_type ?
2437 -authsize : authsize);
2438 if (!req->cryptlen || !dst_size)
2439 return;
2440
2441 dma_unmap_single(dev, reqctx->iv_dma, IV,
2442 DMA_BIDIRECTIONAL);
2443 if (req->src == req->dst) {
2444 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2445 DMA_BIDIRECTIONAL);
2446 } else {
2447 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2448 DMA_TO_DEVICE);
2449 dma_unmap_sg(dev, req->dst, sg_nents(req->dst),
2450 DMA_FROM_DEVICE);
2451 }
2452}
2453
6dad4e8a
AG		 2454void chcr_add_aead_src_ent(struct aead_request *req,
2455 struct ulptx_sgl *ulptx,
2456 unsigned int assoclen,
2457 unsigned short op_type)
2f47d580
HJ		 2458{
2459 struct ulptx_walk ulp_walk;
2460 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2461
2462 if (reqctx->imm) {
2463 u8 *buf = (u8 *)ulptx;
2464
2465 if (reqctx->b0_dma) {
2466 memcpy(buf, reqctx->scratch_pad, reqctx->b0_len);
2467 buf += reqctx->b0_len;
2468 }
2469 sg_pcopy_to_buffer(req->src, sg_nents(req->src),
2470 buf, assoclen, 0);
2471 buf += assoclen;
2472 memcpy(buf, reqctx->iv, IV);
2473 buf += IV;
2474 sg_pcopy_to_buffer(req->src, sg_nents(req->src),
2475 buf, req->cryptlen, req->assoclen);
2476 } else {
2477 ulptx_walk_init(&ulp_walk, ulptx);
2478 if (reqctx->b0_dma)
2479 ulptx_walk_add_page(&ulp_walk, reqctx->b0_len,
2480 &reqctx->b0_dma);
2481 ulptx_walk_add_sg(&ulp_walk, req->src, assoclen, 0);
2482 ulptx_walk_add_page(&ulp_walk, IV, &reqctx->iv_dma);
2483 ulptx_walk_add_sg(&ulp_walk, req->src, req->cryptlen,
2484 req->assoclen);
2485 ulptx_walk_end(&ulp_walk);
2486 }
2487}
2488
6dad4e8a
AG		 2489void chcr_add_aead_dst_ent(struct aead_request *req,
2490 struct cpl_rx_phys_dsgl *phys_cpl,
2491 unsigned int assoclen,
2492 unsigned short op_type,
2493 unsigned short qid)
2f47d580
HJ		 2494{
2495 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2496 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2497 struct dsgl_walk dsgl_walk;
2498 unsigned int authsize = crypto_aead_authsize(tfm);
2499 u32 temp;
2500
2501 dsgl_walk_init(&dsgl_walk, phys_cpl);
2502 if (reqctx->b0_dma)
2503 dsgl_walk_add_page(&dsgl_walk, reqctx->b0_len, &reqctx->b0_dma);
2504 dsgl_walk_add_sg(&dsgl_walk, req->dst, assoclen, 0);
2505 dsgl_walk_add_page(&dsgl_walk, IV, &reqctx->iv_dma);
2506 temp = req->cryptlen + (op_type ? -authsize : authsize);
2507 dsgl_walk_add_sg(&dsgl_walk, req->dst, temp, req->assoclen);
2508 dsgl_walk_end(&dsgl_walk, qid);
2509}
2510
6dad4e8a 2511void chcr_add_cipher_src_ent(struct ablkcipher_request *req,
335bcc4a 2512 void *ulptx,
6dad4e8a 2513 struct cipher_wr_param *wrparam)
2f47d580
HJ		 2514{
2515 struct ulptx_walk ulp_walk;
2516 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
335bcc4a 2517 u8 *buf = ulptx;
2f47d580 2518
335bcc4a
HJ		 2519 memcpy(buf, reqctx->iv, IV);
2520 buf += IV;
2f47d580 2521 if (reqctx->imm) {
2f47d580
HJ		 2522 sg_pcopy_to_buffer(req->src, sg_nents(req->src),
2523 buf, wrparam->bytes, reqctx->processed);
2524 } else {
335bcc4a 2525 ulptx_walk_init(&ulp_walk, (struct ulptx_sgl *)buf);
2f47d580
HJ		 2526 ulptx_walk_add_sg(&ulp_walk, reqctx->srcsg, wrparam->bytes,
2527 reqctx->src_ofst);
2528 reqctx->srcsg = ulp_walk.last_sg;
2529 reqctx->src_ofst = ulp_walk.last_sg_len;
2530 ulptx_walk_end(&ulp_walk);
2531 }
2532}
2533
6dad4e8a
AG		 2534void chcr_add_cipher_dst_ent(struct ablkcipher_request *req,
2535 struct cpl_rx_phys_dsgl *phys_cpl,
2536 struct cipher_wr_param *wrparam,
2537 unsigned short qid)
2f47d580
HJ		 2538{
2539 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
2540 struct dsgl_walk dsgl_walk;
2541
2542 dsgl_walk_init(&dsgl_walk, phys_cpl);
2f47d580
HJ		 2543 dsgl_walk_add_sg(&dsgl_walk, reqctx->dstsg, wrparam->bytes,
2544 reqctx->dst_ofst);
2545 reqctx->dstsg = dsgl_walk.last_sg;
2546 reqctx->dst_ofst = dsgl_walk.last_sg_len;
2547
2548 dsgl_walk_end(&dsgl_walk, qid);
2549}
2550
6dad4e8a
AG		 2551void chcr_add_hash_src_ent(struct ahash_request *req,
2552 struct ulptx_sgl *ulptx,
2553 struct hash_wr_param *param)
2f47d580
HJ		 2554{
2555 struct ulptx_walk ulp_walk;
2556 struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req);
2557
5110e655 2558 if (reqctx->hctx_wr.imm) {
2f47d580
HJ		 2559 u8 *buf = (u8 *)ulptx;
2560
2561 if (param->bfr_len) {
2562 memcpy(buf, reqctx->reqbfr, param->bfr_len);
2563 buf += param->bfr_len;
2564 }
5110e655
HJ		 2565
2566 sg_pcopy_to_buffer(reqctx->hctx_wr.srcsg,
2567 sg_nents(reqctx->hctx_wr.srcsg), buf,
2568 param->sg_len, 0);
2f47d580
HJ		 2569 } else {
2570 ulptx_walk_init(&ulp_walk, ulptx);
2571 if (param->bfr_len)
2572 ulptx_walk_add_page(&ulp_walk, param->bfr_len,
5110e655
HJ		 2573 &reqctx->hctx_wr.dma_addr);
2574 ulptx_walk_add_sg(&ulp_walk, reqctx->hctx_wr.srcsg,
2575 param->sg_len, reqctx->hctx_wr.src_ofst);
2576 reqctx->hctx_wr.srcsg = ulp_walk.last_sg;
2577 reqctx->hctx_wr.src_ofst = ulp_walk.last_sg_len;
db6deea4 2578 ulptx_walk_end(&ulp_walk);
2f47d580
HJ		 2579 }
2580}
2581
6dad4e8a
AG		 2582int chcr_hash_dma_map(struct device *dev,
2583 struct ahash_request *req)
2f47d580
HJ		 2584{
2585 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
2586 int error = 0;
2587
2588 if (!req->nbytes)
2589 return 0;
2590 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2591 DMA_TO_DEVICE);
2592 if (!error)
7814f552 2593 return -ENOMEM;
5110e655 2594 req_ctx->hctx_wr.is_sg_map = 1;
2f47d580
HJ		 2595 return 0;
2596}
2597
6dad4e8a
AG		 2598void chcr_hash_dma_unmap(struct device *dev,
2599 struct ahash_request *req)
2f47d580
HJ		 2600{
2601 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
2602
2603 if (!req->nbytes)
2604 return;
2605
2606 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2607 DMA_TO_DEVICE);
5110e655 2608 req_ctx->hctx_wr.is_sg_map = 0;
2f47d580
HJ		 2609
2610}
2611
6dad4e8a
AG		 2612int chcr_cipher_dma_map(struct device *dev,
2613 struct ablkcipher_request *req)
2f47d580
HJ		 2614{
2615 int error;
2f47d580
HJ		 2616
2617 if (req->src == req->dst) {
2618 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2619 DMA_BIDIRECTIONAL);
2620 if (!error)
2621 goto err;
2622 } else {
2623 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2624 DMA_TO_DEVICE);
2625 if (!error)
2626 goto err;
2627 error = dma_map_sg(dev, req->dst, sg_nents(req->dst),
2628 DMA_FROM_DEVICE);
2629 if (!error) {
2630 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2631 DMA_TO_DEVICE);
2632 goto err;
2633 }
2634 }
2635
2636 return 0;
2637err:
2f47d580
HJ		 2638 return -ENOMEM;
2639}
6dad4e8a
AG		 2640
2641void chcr_cipher_dma_unmap(struct device *dev,
2642 struct ablkcipher_request *req)
2f47d580 2643{
2f47d580
HJ		 2644 if (req->src == req->dst) {
2645 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2646 DMA_BIDIRECTIONAL);
2647 } else {
2648 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2649 DMA_TO_DEVICE);
2650 dma_unmap_sg(dev, req->dst, sg_nents(req->dst),
2651 DMA_FROM_DEVICE);
2652 }
2653}
2654
2debd332
HJ		 2655static int set_msg_len(u8 *block, unsigned int msglen, int csize)
2656{
2657 __be32 data;
2658
2659 memset(block, 0, csize);
2660 block += csize;
2661
2662 if (csize >= 4)
2663 csize = 4;
2664 else if (msglen > (unsigned int)(1 << (8 * csize)))
2665 return -EOVERFLOW;
2666
2667 data = cpu_to_be32(msglen);
2668 memcpy(block - csize, (u8 *)&data + 4 - csize, csize);
2669
2670 return 0;
2671}
2672
2673static void generate_b0(struct aead_request *req,
2674 struct chcr_aead_ctx *aeadctx,
2675 unsigned short op_type)
2676{
2677 unsigned int l, lp, m;
2678 int rc;
2679 struct crypto_aead *aead = crypto_aead_reqtfm(req);
2680 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2681 u8 *b0 = reqctx->scratch_pad;
2682
2683 m = crypto_aead_authsize(aead);
2684
2685 memcpy(b0, reqctx->iv, 16);
2686
2687 lp = b0[0];
2688 l = lp + 1;
2689
2690 /* set m, bits 3-5 */
2691 *b0 |= (8 * ((m - 2) / 2));
2692
2693 /* set adata, bit 6, if associated data is used */
2694 if (req->assoclen)
2695 *b0 |= 64;
2696 rc = set_msg_len(b0 + 16 - l,
2697 (op_type == CHCR_DECRYPT_OP) ?
2698 req->cryptlen - m : req->cryptlen, l);
2699}
2700
2701static inline int crypto_ccm_check_iv(const u8 *iv)
2702{
2703 /* 2 <= L <= 8, so 1 <= L' <= 7. */
2704 if (iv[0] < 1 || iv[0] > 7)
2705 return -EINVAL;
2706
2707 return 0;
2708}
2709
2710static int ccm_format_packet(struct aead_request *req,
2711 struct chcr_aead_ctx *aeadctx,
2712 unsigned int sub_type,
2713 unsigned short op_type)
2714{
2715 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2716 int rc = 0;
2717
2debd332
HJ		 2718 if (sub_type == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) {
2719 reqctx->iv[0] = 3;
2720 memcpy(reqctx->iv + 1, &aeadctx->salt[0], 3);
2721 memcpy(reqctx->iv + 4, req->iv, 8);
2722 memset(reqctx->iv + 12, 0, 4);
2723 *((unsigned short *)(reqctx->scratch_pad + 16)) =
2724 htons(req->assoclen - 8);
2725 } else {
2726 memcpy(reqctx->iv, req->iv, 16);
2727 *((unsigned short *)(reqctx->scratch_pad + 16)) =
2728 htons(req->assoclen);
2729 }
2730 generate_b0(req, aeadctx, op_type);
2731 /* zero the ctr value */
2732 memset(reqctx->iv + 15 - reqctx->iv[0], 0, reqctx->iv[0] + 1);
2733 return rc;
2734}
2735
2736static void fill_sec_cpl_for_aead(struct cpl_tx_sec_pdu *sec_cpl,
2737 unsigned int dst_size,
2738 struct aead_request *req,
2f47d580 2739 unsigned short op_type)
2debd332
HJ		 2740{
2741 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2f47d580 2742 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2debd332
HJ		 2743 unsigned int cipher_mode = CHCR_SCMD_CIPHER_MODE_AES_CCM;
2744 unsigned int mac_mode = CHCR_SCMD_AUTH_MODE_CBCMAC;
2f47d580 2745 unsigned int c_id = a_ctx(tfm)->dev->rx_channel_id;
2debd332
HJ		 2746 unsigned int ccm_xtra;
2747 unsigned char tag_offset = 0, auth_offset = 0;
2debd332
HJ		 2748 unsigned int assoclen;
2749
2750 if (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309)
2751 assoclen = req->assoclen - 8;
2752 else
2753 assoclen = req->assoclen;
2754 ccm_xtra = CCM_B0_SIZE +
2755 ((assoclen) ? CCM_AAD_FIELD_SIZE : 0);
2756
2757 auth_offset = req->cryptlen ?
2f47d580 2758 (assoclen + IV + 1 + ccm_xtra) : 0;
2debd332
HJ		 2759 if (op_type == CHCR_DECRYPT_OP) {
2760 if (crypto_aead_authsize(tfm) != req->cryptlen)
2761 tag_offset = crypto_aead_authsize(tfm);
2762 else
2763 auth_offset = 0;
2764 }
2765
2766
2767 sec_cpl->op_ivinsrtofst = FILL_SEC_CPL_OP_IVINSR(c_id,
2f47d580 2768 2, assoclen + 1 + ccm_xtra);
2debd332 2769 sec_cpl->pldlen =
2f47d580 2770 htonl(assoclen + IV + req->cryptlen + ccm_xtra);
2debd332
HJ		 2771 /* For CCM there wil be b0 always. So AAD start will be 1 always */
2772 sec_cpl->aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI(
2773 1, assoclen + ccm_xtra, assoclen
2f47d580 2774 + IV + 1 + ccm_xtra, 0);
2debd332
HJ		 2775
2776 sec_cpl->cipherstop_lo_authinsert = FILL_SEC_CPL_AUTHINSERT(0,
2777 auth_offset, tag_offset,
2778 (op_type == CHCR_ENCRYPT_OP) ? 0 :
2779 crypto_aead_authsize(tfm));
2780 sec_cpl->seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(op_type,
2781 (op_type == CHCR_ENCRYPT_OP) ? 0 : 1,
0a7bd30c 2782 cipher_mode, mac_mode,
2f47d580 2783 aeadctx->hmac_ctrl, IV >> 1);
2debd332
HJ		 2784
2785 sec_cpl->ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1, 0,
2f47d580 2786 0, dst_size);
2debd332
HJ		 2787}
2788
1efb892b
CIK		 2789static int aead_ccm_validate_input(unsigned short op_type,
2790 struct aead_request *req,
2791 struct chcr_aead_ctx *aeadctx,
2792 unsigned int sub_type)
2debd332
HJ		 2793{
2794 if (sub_type != CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) {
2795 if (crypto_ccm_check_iv(req->iv)) {
2796 pr_err("CCM: IV check fails\n");
2797 return -EINVAL;
2798 }
2799 } else {
2800 if (req->assoclen != 16 && req->assoclen != 20) {
2801 pr_err("RFC4309: Invalid AAD length %d\n",
2802 req->assoclen);
2803 return -EINVAL;
2804 }
2805 }
2debd332
HJ		 2806 return 0;
2807}
2808
2debd332
HJ		 2809static struct sk_buff *create_aead_ccm_wr(struct aead_request *req,
2810 unsigned short qid,
2811 int size,
2812 unsigned short op_type)
2813{
2814 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2f47d580 2815 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2debd332
HJ		 2816 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2817 struct sk_buff *skb = NULL;
2818 struct chcr_wr *chcr_req;
2819 struct cpl_rx_phys_dsgl *phys_cpl;
2f47d580
HJ		 2820 struct ulptx_sgl *ulptx;
2821 unsigned int transhdr_len;
2822 unsigned int dst_size = 0, kctx_len, dnents, temp;
2823 unsigned int sub_type, assoclen = req->assoclen;
2debd332 2824 unsigned int authsize = crypto_aead_authsize(tfm);
2f47d580 2825 int error = -EINVAL;
2debd332
HJ		 2826 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
2827 GFP_ATOMIC;
2f47d580 2828 struct adapter *adap = padap(a_ctx(tfm)->dev);
2debd332 2829
2f47d580
HJ		 2830 reqctx->b0_dma = 0;
2831 sub_type = get_aead_subtype(tfm);
2832 if (sub_type == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309)
2833 assoclen -= 8;
2f47d580
HJ		 2834 error = chcr_aead_common_init(req, op_type);
2835 if (error)
2836 return ERR_PTR(error);
0e93708d 2837
2f47d580
HJ		 2838
2839 reqctx->b0_len = CCM_B0_SIZE + (assoclen ? CCM_AAD_FIELD_SIZE : 0);
5fe8c711
HJ		 2840 error = aead_ccm_validate_input(op_type, req, aeadctx, sub_type);
2841 if (error)
2debd332 2842 goto err;
e1a018e6
HJ		 2843 dnents = sg_nents_xlen(req->dst, assoclen, CHCR_DST_SG_SIZE, 0);
2844 dnents += sg_nents_xlen(req->dst, req->cryptlen
2845 + (op_type ? -authsize : authsize),
2846 CHCR_DST_SG_SIZE, req->assoclen);
2847 dnents += MIN_CCM_SG; // For IV and B0
2f47d580 2848 dst_size = get_space_for_phys_dsgl(dnents);
125d01ca 2849 kctx_len = roundup(aeadctx->enckey_len, 16) * 2;
2debd332 2850 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
2f47d580
HJ		 2851 reqctx->imm = (transhdr_len + assoclen + IV + req->cryptlen +
2852 reqctx->b0_len) <= SGE_MAX_WR_LEN;
125d01ca
HJ		 2853 temp = reqctx->imm ? roundup(assoclen + IV + req->cryptlen +
2854 reqctx->b0_len, 16) :
2f47d580
HJ		 2855 (sgl_len(reqctx->src_nents + reqctx->aad_nents +
2856 MIN_CCM_SG) * 8);
2857 transhdr_len += temp;
125d01ca 2858 transhdr_len = roundup(transhdr_len, 16);
2f47d580
HJ		 2859
2860 if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE -
2861 reqctx->b0_len, transhdr_len, op_type)) {
ee0863ba 2862 atomic_inc(&adap->chcr_stats.fallback);
2f47d580
HJ		 2863 chcr_aead_dma_unmap(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev, req,
2864 op_type);
0e93708d
HJ		 2865 return ERR_PTR(chcr_aead_fallback(req, op_type));
2866 }
2f47d580 2867 skb = alloc_skb(SGE_MAX_WR_LEN, flags);
2debd332 2868
5fe8c711
HJ		 2869 if (!skb) {
2870 error = -ENOMEM;
2debd332 2871 goto err;
5fe8c711 2872 }
2debd332 2873
2f47d580 2874 chcr_req = (struct chcr_wr *) __skb_put_zero(skb, transhdr_len);
2debd332 2875
2f47d580 2876 fill_sec_cpl_for_aead(&chcr_req->sec_cpl, dst_size, req, op_type);
2debd332
HJ		 2877
2878 chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr;
2879 memcpy(chcr_req->key_ctx.key, aeadctx->key, aeadctx->enckey_len);
125d01ca
HJ		 2880 memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16),
2881 aeadctx->key, aeadctx->enckey_len);
2debd332
HJ		 2882
2883 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
2f47d580 2884 ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size);
5fe8c711
HJ		 2885 error = ccm_format_packet(req, aeadctx, sub_type, op_type);
2886 if (error)
2debd332
HJ		 2887 goto dstmap_fail;
2888
2f47d580
HJ		 2889 reqctx->b0_dma = dma_map_single(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev,
2890 &reqctx->scratch_pad, reqctx->b0_len,
2891 DMA_BIDIRECTIONAL);
2892 if (dma_mapping_error(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev,
2893 reqctx->b0_dma)) {
2894 error = -ENOMEM;
2debd332 2895 goto dstmap_fail;
2f47d580
HJ		 2896 }
2897
2898 chcr_add_aead_dst_ent(req, phys_cpl, assoclen, op_type, qid);
2899 chcr_add_aead_src_ent(req, ulptx, assoclen, op_type);
2debd332 2900
ee0863ba 2901 atomic_inc(&adap->chcr_stats.aead_rqst);
2f47d580
HJ		 2902 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size +
2903 kctx_len + (reqctx->imm ? (assoclen + IV + req->cryptlen +
2904 reqctx->b0_len) : 0);
2905 create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, 0,
2906 transhdr_len, temp, 0);
2debd332 2907 reqctx->skb = skb;
2f47d580
HJ		 2908 reqctx->op = op_type;
2909
2debd332
HJ		 2910 return skb;
2911dstmap_fail:
2912 kfree_skb(skb);
2debd332 2913err:
2f47d580 2914 chcr_aead_dma_unmap(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev, req, op_type);
5fe8c711 2915 return ERR_PTR(error);
2debd332
HJ		 2916}
2917
2918static struct sk_buff *create_gcm_wr(struct aead_request *req,
2919 unsigned short qid,
2920 int size,
2921 unsigned short op_type)
2922{
2923 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2f47d580 2924 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2debd332
HJ		 2925 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2926 struct sk_buff *skb = NULL;
2927 struct chcr_wr *chcr_req;
2928 struct cpl_rx_phys_dsgl *phys_cpl;
2f47d580
HJ		 2929 struct ulptx_sgl *ulptx;
2930 unsigned int transhdr_len, dnents = 0;
2931 unsigned int dst_size = 0, temp = 0, kctx_len, assoclen = req->assoclen;
2debd332 2932 unsigned int authsize = crypto_aead_authsize(tfm);
2f47d580 2933 int error = -EINVAL;
2debd332
HJ		 2934 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
2935 GFP_ATOMIC;
2f47d580 2936 struct adapter *adap = padap(a_ctx(tfm)->dev);
2debd332 2937
2f47d580
HJ		 2938 if (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106)
2939 assoclen = req->assoclen - 8;
2debd332 2940
2f47d580 2941 reqctx->b0_dma = 0;
2f47d580 2942 error = chcr_aead_common_init(req, op_type);
e1a018e6
HJ		 2943 if (error)
2944 return ERR_PTR(error);
2945 dnents = sg_nents_xlen(req->dst, assoclen, CHCR_DST_SG_SIZE, 0);
2946 dnents += sg_nents_xlen(req->dst, req->cryptlen +
2947 (op_type ? -authsize : authsize),
2f47d580 2948 CHCR_DST_SG_SIZE, req->assoclen);
e1a018e6 2949 dnents += MIN_GCM_SG; // For IV
2f47d580 2950 dst_size = get_space_for_phys_dsgl(dnents);
125d01ca 2951 kctx_len = roundup(aeadctx->enckey_len, 16) + AEAD_H_SIZE;
2debd332 2952 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
2f47d580
HJ		 2953 reqctx->imm = (transhdr_len + assoclen + IV + req->cryptlen) <=
2954 SGE_MAX_WR_LEN;
125d01ca
HJ		 2955 temp = reqctx->imm ? roundup(assoclen + IV + req->cryptlen, 16) :
2956 (sgl_len(reqctx->src_nents +
2957 reqctx->aad_nents + MIN_GCM_SG) * 8);
2f47d580 2958 transhdr_len += temp;
125d01ca 2959 transhdr_len = roundup(transhdr_len, 16);
2f47d580
HJ		 2960 if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE,
2961 transhdr_len, op_type)) {
ee0863ba 2962 atomic_inc(&adap->chcr_stats.fallback);
2f47d580
HJ		 2963 chcr_aead_dma_unmap(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev, req,
2964 op_type);
0e93708d
HJ		 2965 return ERR_PTR(chcr_aead_fallback(req, op_type));
2966 }
2f47d580 2967 skb = alloc_skb(SGE_MAX_WR_LEN, flags);
5fe8c711
HJ		 2968 if (!skb) {
2969 error = -ENOMEM;
2debd332 2970 goto err;
5fe8c711 2971 }
2debd332 2972
de77b966 2973 chcr_req = __skb_put_zero(skb, transhdr_len);
2debd332 2974
2f47d580
HJ		 2975 //Offset of tag from end
2976 temp = (op_type == CHCR_ENCRYPT_OP) ? 0 : authsize;
2debd332 2977 chcr_req->sec_cpl.op_ivinsrtofst = FILL_SEC_CPL_OP_IVINSR(
2f47d580
HJ		 2978 a_ctx(tfm)->dev->rx_channel_id, 2,
2979 (assoclen + 1));
0e93708d 2980 chcr_req->sec_cpl.pldlen =
2f47d580 2981 htonl(assoclen + IV + req->cryptlen);
2debd332 2982 chcr_req->sec_cpl.aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI(
d600fc8a 2983 assoclen ? 1 : 0, assoclen,
2f47d580 2984 assoclen + IV + 1, 0);
e1a018e6 2985 chcr_req->sec_cpl.cipherstop_lo_authinsert =
2f47d580
HJ		 2986 FILL_SEC_CPL_AUTHINSERT(0, assoclen + IV + 1,
2987 temp, temp);
e1a018e6 2988 chcr_req->sec_cpl.seqno_numivs =
2debd332
HJ		 2989 FILL_SEC_CPL_SCMD0_SEQNO(op_type, (op_type ==
2990 CHCR_ENCRYPT_OP) ? 1 : 0,
2991 CHCR_SCMD_CIPHER_MODE_AES_GCM,
0a7bd30c 2992 CHCR_SCMD_AUTH_MODE_GHASH,
2f47d580 2993 aeadctx->hmac_ctrl, IV >> 1);
2debd332 2994 chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1,
2f47d580 2995 0, 0, dst_size);
2debd332
HJ		 2996 chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr;
2997 memcpy(chcr_req->key_ctx.key, aeadctx->key, aeadctx->enckey_len);
125d01ca
HJ		 2998 memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16),
2999 GCM_CTX(aeadctx)->ghash_h, AEAD_H_SIZE);
2debd332
HJ		 3000
3001 /* prepare a 16 byte iv */
3002 /* S A L T | IV | 0x00000001 */
3003 if (get_aead_subtype(tfm) ==
3004 CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106) {
3005 memcpy(reqctx->iv, aeadctx->salt, 4);
8f6acb7f 3006 memcpy(reqctx->iv + 4, req->iv, GCM_RFC4106_IV_SIZE);
2debd332 3007 } else {
8f6acb7f 3008 memcpy(reqctx->iv, req->iv, GCM_AES_IV_SIZE);
2debd332
HJ		 3009 }
3010 *((unsigned int *)(reqctx->iv + 12)) = htonl(0x01);
3011
3012 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
2f47d580 3013 ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size);
2debd332 3014
2f47d580
HJ		 3015 chcr_add_aead_dst_ent(req, phys_cpl, assoclen, op_type, qid);
3016 chcr_add_aead_src_ent(req, ulptx, assoclen, op_type);
ee0863ba 3017 atomic_inc(&adap->chcr_stats.aead_rqst);
2f47d580
HJ		 3018 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size +
3019 kctx_len + (reqctx->imm ? (assoclen + IV + req->cryptlen) : 0);
3020 create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, size,
3021 transhdr_len, temp, reqctx->verify);
2debd332 3022 reqctx->skb = skb;
2f47d580 3023 reqctx->op = op_type;
2debd332
HJ		 3024 return skb;
3025
2debd332 3026err:
2f47d580 3027 chcr_aead_dma_unmap(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev, req, op_type);
5fe8c711 3028 return ERR_PTR(error);
2debd332
HJ		 3029}
3030
3031
3032
3033static int chcr_aead_cra_init(struct crypto_aead *tfm)
3034{
2f47d580 3035 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
0e93708d
HJ		 3036 struct aead_alg *alg = crypto_aead_alg(tfm);
3037
3038 aeadctx->sw_cipher = crypto_alloc_aead(alg->base.cra_name, 0,
5fe8c711
HJ		 3039 CRYPTO_ALG_NEED_FALLBACK |
3040 CRYPTO_ALG_ASYNC);
0e93708d
HJ		 3041 if (IS_ERR(aeadctx->sw_cipher))
3042 return PTR_ERR(aeadctx->sw_cipher);
3043 crypto_aead_set_reqsize(tfm, max(sizeof(struct chcr_aead_reqctx),
3044 sizeof(struct aead_request) +
3045 crypto_aead_reqsize(aeadctx->sw_cipher)));
2f47d580 3046 return chcr_device_init(a_ctx(tfm));
2debd332
HJ		 3047}
3048
3049static void chcr_aead_cra_exit(struct crypto_aead *tfm)
3050{
2f47d580 3051 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
0e93708d 3052
0e93708d 3053 crypto_free_aead(aeadctx->sw_cipher);
2debd332
HJ		 3054}
3055
3056static int chcr_authenc_null_setauthsize(struct crypto_aead *tfm,
3057 unsigned int authsize)
3058{
2f47d580 3059 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2debd332
HJ		 3060
3061 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NOP;
3062 aeadctx->mayverify = VERIFY_HW;
0e93708d 3063 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
2debd332
HJ		 3064}
3065static int chcr_authenc_setauthsize(struct crypto_aead *tfm,
3066 unsigned int authsize)
3067{
2f47d580 3068 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2debd332
HJ		 3069 u32 maxauth = crypto_aead_maxauthsize(tfm);
3070
3071 /*SHA1 authsize in ipsec is 12 instead of 10 i.e maxauthsize / 2 is not
3072 * true for sha1. authsize == 12 condition should be before
3073 * authsize == (maxauth >> 1)
3074 */
3075 if (authsize == ICV_4) {
3076 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1;
3077 aeadctx->mayverify = VERIFY_HW;
3078 } else if (authsize == ICV_6) {
3079 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL2;
3080 aeadctx->mayverify = VERIFY_HW;
3081 } else if (authsize == ICV_10) {
3082 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_TRUNC_RFC4366;
3083 aeadctx->mayverify = VERIFY_HW;
3084 } else if (authsize == ICV_12) {
3085 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
3086 aeadctx->mayverify = VERIFY_HW;
3087 } else if (authsize == ICV_14) {
3088 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3;
3089 aeadctx->mayverify = VERIFY_HW;
3090 } else if (authsize == (maxauth >> 1)) {
3091 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
3092 aeadctx->mayverify = VERIFY_HW;
3093 } else if (authsize == maxauth) {
3094 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3095 aeadctx->mayverify = VERIFY_HW;
3096 } else {
3097 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3098 aeadctx->mayverify = VERIFY_SW;
3099 }
0e93708d 3100 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
2debd332
HJ		 3101}
3102
3103
3104static int chcr_gcm_setauthsize(struct crypto_aead *tfm, unsigned int authsize)
3105{
2f47d580 3106 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2debd332
HJ		 3107
3108 switch (authsize) {
3109 case ICV_4:
3110 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1;
3111 aeadctx->mayverify = VERIFY_HW;
3112 break;
3113 case ICV_8:
3114 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
3115 aeadctx->mayverify = VERIFY_HW;
3116 break;
3117 case ICV_12:
3118 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
3119 aeadctx->mayverify = VERIFY_HW;
3120 break;
3121 case ICV_14:
3122 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3;
3123 aeadctx->mayverify = VERIFY_HW;
3124 break;
3125 case ICV_16:
3126 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3127 aeadctx->mayverify = VERIFY_HW;
3128 break;
3129 case ICV_13:
3130 case ICV_15:
3131 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3132 aeadctx->mayverify = VERIFY_SW;
3133 break;
3134 default:
3135
3136 crypto_tfm_set_flags((struct crypto_tfm *) tfm,
3137 CRYPTO_TFM_RES_BAD_KEY_LEN);
3138 return -EINVAL;
3139 }
0e93708d 3140 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
2debd332
HJ		 3141}
3142
3143static int chcr_4106_4309_setauthsize(struct crypto_aead *tfm,
3144 unsigned int authsize)
3145{
2f47d580 3146 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2debd332
HJ		 3147
3148 switch (authsize) {
3149 case ICV_8:
3150 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
3151 aeadctx->mayverify = VERIFY_HW;
3152 break;
3153 case ICV_12:
3154 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
3155 aeadctx->mayverify = VERIFY_HW;
3156 break;
3157 case ICV_16:
3158 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3159 aeadctx->mayverify = VERIFY_HW;
3160 break;
3161 default:
3162 crypto_tfm_set_flags((struct crypto_tfm *)tfm,
3163 CRYPTO_TFM_RES_BAD_KEY_LEN);
3164 return -EINVAL;
3165 }
0e93708d 3166 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
2debd332
HJ		 3167}
3168
3169static int chcr_ccm_setauthsize(struct crypto_aead *tfm,
3170 unsigned int authsize)
3171{
2f47d580 3172 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2debd332
HJ		 3173
3174 switch (authsize) {
3175 case ICV_4:
3176 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1;
3177 aeadctx->mayverify = VERIFY_HW;
3178 break;
3179 case ICV_6:
3180 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL2;
3181 aeadctx->mayverify = VERIFY_HW;
3182 break;
3183 case ICV_8:
3184 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
3185 aeadctx->mayverify = VERIFY_HW;
3186 break;
3187 case ICV_10:
3188 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_TRUNC_RFC4366;
3189 aeadctx->mayverify = VERIFY_HW;
3190 break;
3191 case ICV_12:
3192 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
3193 aeadctx->mayverify = VERIFY_HW;
3194 break;
3195 case ICV_14:
3196 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3;
3197 aeadctx->mayverify = VERIFY_HW;
3198 break;
3199 case ICV_16:
3200 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3201 aeadctx->mayverify = VERIFY_HW;
3202 break;
3203 default:
3204 crypto_tfm_set_flags((struct crypto_tfm *)tfm,
3205 CRYPTO_TFM_RES_BAD_KEY_LEN);
3206 return -EINVAL;
3207 }
0e93708d 3208 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
2debd332
HJ		 3209}
3210
0e93708d 3211static int chcr_ccm_common_setkey(struct crypto_aead *aead,
2debd332
HJ		 3212 const u8 *key,
3213 unsigned int keylen)
3214{
2f47d580 3215 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead));
2debd332
HJ		 3216 unsigned char ck_size, mk_size;
3217 int key_ctx_size = 0;
3218
125d01ca 3219 key_ctx_size = sizeof(struct _key_ctx) + roundup(keylen, 16) * 2;
2debd332 3220 if (keylen == AES_KEYSIZE_128) {
2debd332 3221 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
125d01ca 3222 mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_128;
2debd332
HJ		 3223 } else if (keylen == AES_KEYSIZE_192) {
3224 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
3225 mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_192;
3226 } else if (keylen == AES_KEYSIZE_256) {
3227 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
3228 mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256;
3229 } else {
3230 crypto_tfm_set_flags((struct crypto_tfm *)aead,
3231 CRYPTO_TFM_RES_BAD_KEY_LEN);
3232 aeadctx->enckey_len = 0;
3233 return -EINVAL;
3234 }
3235 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, mk_size, 0, 0,
3236 key_ctx_size >> 4);
0e93708d
HJ		 3237 memcpy(aeadctx->key, key, keylen);
3238 aeadctx->enckey_len = keylen;
3239
2debd332
HJ		 3240 return 0;
3241}
3242
0e93708d
HJ		 3243static int chcr_aead_ccm_setkey(struct crypto_aead *aead,
3244 const u8 *key,
3245 unsigned int keylen)
3246{
2f47d580 3247 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead));
0e93708d
HJ		 3248 int error;
3249
3250 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3251 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead) &
3252 CRYPTO_TFM_REQ_MASK);
3253 error = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3254 crypto_aead_clear_flags(aead, CRYPTO_TFM_RES_MASK);
3255 crypto_aead_set_flags(aead, crypto_aead_get_flags(aeadctx->sw_cipher) &
3256 CRYPTO_TFM_RES_MASK);
3257 if (error)
3258 return error;
3259 return chcr_ccm_common_setkey(aead, key, keylen);
3260}
3261
2debd332
HJ		 3262static int chcr_aead_rfc4309_setkey(struct crypto_aead *aead, const u8 *key,
3263 unsigned int keylen)
3264{
2f47d580 3265 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead));
4dbeae42 3266 int error;
2debd332
HJ		 3267
3268 if (keylen < 3) {
3269 crypto_tfm_set_flags((struct crypto_tfm *)aead,
3270 CRYPTO_TFM_RES_BAD_KEY_LEN);
3271 aeadctx->enckey_len = 0;
3272 return -EINVAL;
3273 }
4dbeae42
HJ		 3274 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3275 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead) &
3276 CRYPTO_TFM_REQ_MASK);
3277 error = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3278 crypto_aead_clear_flags(aead, CRYPTO_TFM_RES_MASK);
3279 crypto_aead_set_flags(aead, crypto_aead_get_flags(aeadctx->sw_cipher) &
3280 CRYPTO_TFM_RES_MASK);
3281 if (error)
3282 return error;
2debd332
HJ		 3283 keylen -= 3;
3284 memcpy(aeadctx->salt, key + keylen, 3);
0e93708d 3285 return chcr_ccm_common_setkey(aead, key, keylen);
2debd332
HJ		 3286}
3287
3288static int chcr_gcm_setkey(struct crypto_aead *aead, const u8 *key,
3289 unsigned int keylen)
3290{
2f47d580 3291 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead));
2debd332 3292 struct chcr_gcm_ctx *gctx = GCM_CTX(aeadctx);
8356ea51 3293 struct crypto_cipher *cipher;
2debd332
HJ		 3294 unsigned int ck_size;
3295 int ret = 0, key_ctx_size = 0;
3296
0e93708d
HJ		 3297 aeadctx->enckey_len = 0;
3298 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3299 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead)
3300 & CRYPTO_TFM_REQ_MASK);
3301 ret = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3302 crypto_aead_clear_flags(aead, CRYPTO_TFM_RES_MASK);
3303 crypto_aead_set_flags(aead, crypto_aead_get_flags(aeadctx->sw_cipher) &
3304 CRYPTO_TFM_RES_MASK);
3305 if (ret)
3306 goto out;
3307
7c2cf1c4
HJ		 3308 if (get_aead_subtype(aead) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106 &&
3309 keylen > 3) {
2debd332
HJ		 3310 keylen -= 4; /* nonce/salt is present in the last 4 bytes */
3311 memcpy(aeadctx->salt, key + keylen, 4);
3312 }
3313 if (keylen == AES_KEYSIZE_128) {
3314 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
3315 } else if (keylen == AES_KEYSIZE_192) {
3316 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
3317 } else if (keylen == AES_KEYSIZE_256) {
3318 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
3319 } else {
3320 crypto_tfm_set_flags((struct crypto_tfm *)aead,
3321 CRYPTO_TFM_RES_BAD_KEY_LEN);
0e93708d 3322 pr_err("GCM: Invalid key length %d\n", keylen);
2debd332
HJ		 3323 ret = -EINVAL;
3324 goto out;
3325 }
3326
3327 memcpy(aeadctx->key, key, keylen);
3328 aeadctx->enckey_len = keylen;
125d01ca 3329 key_ctx_size = sizeof(struct _key_ctx) + roundup(keylen, 16) +
2debd332 3330 AEAD_H_SIZE;
125d01ca 3331 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size,
2debd332
HJ		 3332 CHCR_KEYCTX_MAC_KEY_SIZE_128,
3333 0, 0,
3334 key_ctx_size >> 4);
8356ea51
HJ		 3335 /* Calculate the H = CIPH(K, 0 repeated 16 times).
3336 * It will go in key context
2debd332 3337 */
8356ea51
HJ		 3338 cipher = crypto_alloc_cipher("aes-generic", 0, 0);
3339 if (IS_ERR(cipher)) {
2debd332
HJ		 3340 aeadctx->enckey_len = 0;
3341 ret = -ENOMEM;
3342 goto out;
3343 }
8356ea51
HJ		 3344
3345 ret = crypto_cipher_setkey(cipher, key, keylen);
2debd332
HJ		 3346 if (ret) {
3347 aeadctx->enckey_len = 0;
3348 goto out1;
3349 }
3350 memset(gctx->ghash_h, 0, AEAD_H_SIZE);
8356ea51 3351 crypto_cipher_encrypt_one(cipher, gctx->ghash_h, gctx->ghash_h);
2debd332
HJ		 3352
3353out1:
8356ea51 3354 crypto_free_cipher(cipher);
2debd332
HJ		 3355out:
3356 return ret;
3357}
3358
3359static int chcr_authenc_setkey(struct crypto_aead *authenc, const u8 *key,
3360 unsigned int keylen)
3361{
2f47d580 3362 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(authenc));
2debd332
HJ		 3363 struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx);
3364 /* it contains auth and cipher key both*/
3365 struct crypto_authenc_keys keys;
3d64bd67 3366 unsigned int bs, subtype;
2debd332
HJ		 3367 unsigned int max_authsize = crypto_aead_alg(authenc)->maxauthsize;
3368 int err = 0, i, key_ctx_len = 0;
3369 unsigned char ck_size = 0;
3370 unsigned char pad[CHCR_HASH_MAX_BLOCK_SIZE_128] = { 0 };
ec1bca94 3371 struct crypto_shash *base_hash = ERR_PTR(-EINVAL);
2debd332
HJ		 3372 struct algo_param param;
3373 int align;
3374 u8 *o_ptr = NULL;
3375
0e93708d
HJ		 3376 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3377 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(authenc)
3378 & CRYPTO_TFM_REQ_MASK);
3379 err = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3380 crypto_aead_clear_flags(authenc, CRYPTO_TFM_RES_MASK);
3381 crypto_aead_set_flags(authenc, crypto_aead_get_flags(aeadctx->sw_cipher)
3382 & CRYPTO_TFM_RES_MASK);
3383 if (err)
3384 goto out;
3385
2debd332
HJ		 3386 if (crypto_authenc_extractkeys(&keys, key, keylen) != 0) {
3387 crypto_aead_set_flags(authenc, CRYPTO_TFM_RES_BAD_KEY_LEN);
3388 goto out;
3389 }
3390
3391 if (get_alg_config(&param, max_authsize)) {
3392 pr_err("chcr : Unsupported digest size\n");
3393 goto out;
3394 }
3d64bd67
HJ		 3395 subtype = get_aead_subtype(authenc);
3396 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
3397 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
3398 if (keys.enckeylen < CTR_RFC3686_NONCE_SIZE)
3399 goto out;
3400 memcpy(aeadctx->nonce, keys.enckey + (keys.enckeylen
3401 - CTR_RFC3686_NONCE_SIZE), CTR_RFC3686_NONCE_SIZE);
3402 keys.enckeylen -= CTR_RFC3686_NONCE_SIZE;
3403 }
2debd332
HJ		 3404 if (keys.enckeylen == AES_KEYSIZE_128) {
3405 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
3406 } else if (keys.enckeylen == AES_KEYSIZE_192) {
3407 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
3408 } else if (keys.enckeylen == AES_KEYSIZE_256) {
3409 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
3410 } else {
3411 pr_err("chcr : Unsupported cipher key\n");
3412 goto out;
3413 }
3414
3415 /* Copy only encryption key. We use authkey to generate h(ipad) and
3416 * h(opad) so authkey is not needed again. authkeylen size have the
3417 * size of the hash digest size.
3418 */
3419 memcpy(aeadctx->key, keys.enckey, keys.enckeylen);
3420 aeadctx->enckey_len = keys.enckeylen;
3d64bd67
HJ		 3421 if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_SHA ||
3422 subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL) {
2debd332 3423
3d64bd67
HJ		 3424 get_aes_decrypt_key(actx->dec_rrkey, aeadctx->key,
3425 aeadctx->enckey_len << 3);
3426 }
2debd332
HJ		 3427 base_hash = chcr_alloc_shash(max_authsize);
3428 if (IS_ERR(base_hash)) {
3429 pr_err("chcr : Base driver cannot be loaded\n");
0e93708d 3430 aeadctx->enckey_len = 0;
eb526531 3431 memzero_explicit(&keys, sizeof(keys));
0e93708d 3432 return -EINVAL;
324429d7 3433 }
2debd332
HJ		 3434 {
3435 SHASH_DESC_ON_STACK(shash, base_hash);
6faa0f57 3436
2debd332
HJ		 3437 shash->tfm = base_hash;
3438 shash->flags = crypto_shash_get_flags(base_hash);
3439 bs = crypto_shash_blocksize(base_hash);
3440 align = KEYCTX_ALIGN_PAD(max_authsize);
3441 o_ptr = actx->h_iopad + param.result_size + align;
3442
3443 if (keys.authkeylen > bs) {
3444 err = crypto_shash_digest(shash, keys.authkey,
3445 keys.authkeylen,
3446 o_ptr);
3447 if (err) {
3448 pr_err("chcr : Base driver cannot be loaded\n");
3449 goto out;
3450 }
3451 keys.authkeylen = max_authsize;
3452 } else
3453 memcpy(o_ptr, keys.authkey, keys.authkeylen);
3454
3455 /* Compute the ipad-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) ^= IPAD_DATA;
3460
3461 if (chcr_compute_partial_hash(shash, pad, actx->h_iopad,
3462 max_authsize))
3463 goto out;
3464 /* Compute the opad-digest */
3465 memset(pad + keys.authkeylen, 0, bs - keys.authkeylen);
3466 memcpy(pad, o_ptr, keys.authkeylen);
3467 for (i = 0; i < bs >> 2; i++)
3468 *((unsigned int *)pad + i) ^= OPAD_DATA;
3469
3470 if (chcr_compute_partial_hash(shash, pad, o_ptr, max_authsize))
3471 goto out;
3472
3473 /* convert the ipad and opad digest to network order */
3474 chcr_change_order(actx->h_iopad, param.result_size);
3475 chcr_change_order(o_ptr, param.result_size);
3476 key_ctx_len = sizeof(struct _key_ctx) +
125d01ca 3477 roundup(keys.enckeylen, 16) +
2debd332
HJ		 3478 (param.result_size + align) * 2;
3479 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, param.mk_size,
3480 0, 1, key_ctx_len >> 4);
3481 actx->auth_mode = param.auth_mode;
3482 chcr_free_shash(base_hash);
3483
eb526531 3484 memzero_explicit(&keys, sizeof(keys));
2debd332
HJ		 3485 return 0;
3486 }
3487out:
3488 aeadctx->enckey_len = 0;
eb526531 3489 memzero_explicit(&keys, sizeof(keys));
ec1bca94 3490 if (!IS_ERR(base_hash))
2debd332
HJ		 3491 chcr_free_shash(base_hash);
3492 return -EINVAL;
324429d7
HS		 3493}
3494
2debd332
HJ		 3495static int chcr_aead_digest_null_setkey(struct crypto_aead *authenc,
3496 const u8 *key, unsigned int keylen)
3497{
2f47d580 3498 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(authenc));
2debd332
HJ		 3499 struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx);
3500 struct crypto_authenc_keys keys;
0e93708d 3501 int err;
2debd332 3502 /* it contains auth and cipher key both*/
3d64bd67 3503 unsigned int subtype;
2debd332
HJ		 3504 int key_ctx_len = 0;
3505 unsigned char ck_size = 0;
3506
0e93708d
HJ		 3507 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3508 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(authenc)
3509 & CRYPTO_TFM_REQ_MASK);
3510 err = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3511 crypto_aead_clear_flags(authenc, CRYPTO_TFM_RES_MASK);
3512 crypto_aead_set_flags(authenc, crypto_aead_get_flags(aeadctx->sw_cipher)
3513 & CRYPTO_TFM_RES_MASK);
3514 if (err)
3515 goto out;
3516
2debd332
HJ		 3517 if (crypto_authenc_extractkeys(&keys, key, keylen) != 0) {
3518 crypto_aead_set_flags(authenc, CRYPTO_TFM_RES_BAD_KEY_LEN);
3519 goto out;
3520 }
3d64bd67
HJ		 3521 subtype = get_aead_subtype(authenc);
3522 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
3523 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
3524 if (keys.enckeylen < CTR_RFC3686_NONCE_SIZE)
3525 goto out;
3526 memcpy(aeadctx->nonce, keys.enckey + (keys.enckeylen
3527 - CTR_RFC3686_NONCE_SIZE), CTR_RFC3686_NONCE_SIZE);
3528 keys.enckeylen -= CTR_RFC3686_NONCE_SIZE;
3529 }
2debd332
HJ		 3530 if (keys.enckeylen == AES_KEYSIZE_128) {
3531 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
3532 } else if (keys.enckeylen == AES_KEYSIZE_192) {
3533 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
3534 } else if (keys.enckeylen == AES_KEYSIZE_256) {
3535 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
3536 } else {
3d64bd67 3537 pr_err("chcr : Unsupported cipher key %d\n", keys.enckeylen);
2debd332
HJ		 3538 goto out;
3539 }
3540 memcpy(aeadctx->key, keys.enckey, keys.enckeylen);
3541 aeadctx->enckey_len = keys.enckeylen;
3d64bd67
HJ		 3542 if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_SHA ||
3543 subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL) {
3544 get_aes_decrypt_key(actx->dec_rrkey, aeadctx->key,
3545 aeadctx->enckey_len << 3);
3546 }
125d01ca 3547 key_ctx_len = sizeof(struct _key_ctx) + roundup(keys.enckeylen, 16);
2debd332
HJ		 3548
3549 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY, 0,
3550 0, key_ctx_len >> 4);
3551 actx->auth_mode = CHCR_SCMD_AUTH_MODE_NOP;
eb526531 3552 memzero_explicit(&keys, sizeof(keys));
2debd332
HJ		 3553 return 0;
3554out:
3555 aeadctx->enckey_len = 0;
eb526531 3556 memzero_explicit(&keys, sizeof(keys));
2debd332
HJ		 3557 return -EINVAL;
3558}
6dad4e8a
AG		 3559
3560static int chcr_aead_op(struct aead_request *req,
3561 unsigned short op_type,
3562 int size,
3563 create_wr_t create_wr_fn)
3564{
3565 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
3566 struct uld_ctx *u_ctx;
3567 struct sk_buff *skb;
6faa0f57 3568 int isfull = 0;
6dad4e8a
AG		 3569
3570 if (!a_ctx(tfm)->dev) {
3571 pr_err("chcr : %s : No crypto device.\n", __func__);
3572 return -ENXIO;
3573 }
3574 u_ctx = ULD_CTX(a_ctx(tfm));
3575 if (cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
3576 a_ctx(tfm)->tx_qidx)) {
6faa0f57 3577 isfull = 1;
6dad4e8a 3578 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
6faa0f57 3579 return -ENOSPC;
6dad4e8a
AG		 3580 }
3581
3582 /* Form a WR from req */
3583 skb = create_wr_fn(req, u_ctx->lldi.rxq_ids[a_ctx(tfm)->rx_qidx], size,
3584 op_type);
3585
3586 if (IS_ERR(skb) || !skb)
3587 return PTR_ERR(skb);
3588
3589 skb->dev = u_ctx->lldi.ports[0];
3590 set_wr_txq(skb, CPL_PRIORITY_DATA, a_ctx(tfm)->tx_qidx);
3591 chcr_send_wr(skb);
6faa0f57 3592 return isfull ? -EBUSY : -EINPROGRESS;
6dad4e8a
AG		 3593}
3594
2debd332
HJ		 3595static int chcr_aead_encrypt(struct aead_request *req)
3596{
3597 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
3598 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
3599
3600 reqctx->verify = VERIFY_HW;
3601
3602 switch (get_aead_subtype(tfm)) {
3d64bd67
HJ		 3603 case CRYPTO_ALG_SUB_TYPE_CTR_SHA:
3604 case CRYPTO_ALG_SUB_TYPE_CBC_SHA:
3605 case CRYPTO_ALG_SUB_TYPE_CBC_NULL:
3606 case CRYPTO_ALG_SUB_TYPE_CTR_NULL:
2debd332
HJ		 3607 return chcr_aead_op(req, CHCR_ENCRYPT_OP, 0,
3608 create_authenc_wr);
3609 case CRYPTO_ALG_SUB_TYPE_AEAD_CCM:
3610 case CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309:
3611 return chcr_aead_op(req, CHCR_ENCRYPT_OP, 0,
3612 create_aead_ccm_wr);
3613 default:
3614 return chcr_aead_op(req, CHCR_ENCRYPT_OP, 0,
3615 create_gcm_wr);
3616 }
3617}
3618
3619static int chcr_aead_decrypt(struct aead_request *req)
3620{
3621 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2f47d580 3622 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2debd332
HJ		 3623 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
3624 int size;
3625
3626 if (aeadctx->mayverify == VERIFY_SW) {
3627 size = crypto_aead_maxauthsize(tfm);
3628 reqctx->verify = VERIFY_SW;
3629 } else {
3630 size = 0;
3631 reqctx->verify = VERIFY_HW;
3632 }
3633
3634 switch (get_aead_subtype(tfm)) {
3d64bd67
HJ		 3635 case CRYPTO_ALG_SUB_TYPE_CBC_SHA:
3636 case CRYPTO_ALG_SUB_TYPE_CTR_SHA:
3637 case CRYPTO_ALG_SUB_TYPE_CBC_NULL:
3638 case CRYPTO_ALG_SUB_TYPE_CTR_NULL:
2debd332
HJ		 3639 return chcr_aead_op(req, CHCR_DECRYPT_OP, size,
3640 create_authenc_wr);
3641 case CRYPTO_ALG_SUB_TYPE_AEAD_CCM:
3642 case CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309:
3643 return chcr_aead_op(req, CHCR_DECRYPT_OP, size,
3644 create_aead_ccm_wr);
3645 default:
3646 return chcr_aead_op(req, CHCR_DECRYPT_OP, size,
3647 create_gcm_wr);
3648 }
3649}
3650
324429d7
HS		 3651static struct chcr_alg_template driver_algs[] = {
3652 /* AES-CBC */
3653 {
b8fd1f41 3654 .type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_SUB_TYPE_CBC,
324429d7
HS		 3655 .is_registered = 0,
3656 .alg.crypto = {
3657 .cra_name = "cbc(aes)",
2debd332 3658 .cra_driver_name = "cbc-aes-chcr",
324429d7 3659 .cra_blocksize = AES_BLOCK_SIZE,
324429d7 3660 .cra_init = chcr_cra_init,
b8fd1f41 3661 .cra_exit = chcr_cra_exit,
324429d7
HS		 3662 .cra_u.ablkcipher = {
3663 .min_keysize = AES_MIN_KEY_SIZE,
3664 .max_keysize = AES_MAX_KEY_SIZE,
3665 .ivsize = AES_BLOCK_SIZE,
3666 .setkey = chcr_aes_cbc_setkey,
3667 .encrypt = chcr_aes_encrypt,
3668 .decrypt = chcr_aes_decrypt,
3669 }
3670 }
3671 },
3672 {
b8fd1f41 3673 .type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_SUB_TYPE_XTS,
324429d7
HS		 3674 .is_registered = 0,
3675 .alg.crypto = {
3676 .cra_name = "xts(aes)",
2debd332 3677 .cra_driver_name = "xts-aes-chcr",
324429d7 3678 .cra_blocksize = AES_BLOCK_SIZE,
324429d7
HS		 3679 .cra_init = chcr_cra_init,
3680 .cra_exit = NULL,
b8fd1f41 3681 .cra_u .ablkcipher = {
324429d7
HS		 3682 .min_keysize = 2 * AES_MIN_KEY_SIZE,
3683 .max_keysize = 2 * AES_MAX_KEY_SIZE,
3684 .ivsize = AES_BLOCK_SIZE,
3685 .setkey = chcr_aes_xts_setkey,
3686 .encrypt = chcr_aes_encrypt,
3687 .decrypt = chcr_aes_decrypt,
3688 }
3689 }
b8fd1f41
HJ		 3690 },
3691 {
3692 .type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_SUB_TYPE_CTR,
3693 .is_registered = 0,
3694 .alg.crypto = {
3695 .cra_name = "ctr(aes)",
3696 .cra_driver_name = "ctr-aes-chcr",
3697 .cra_blocksize = 1,
3698 .cra_init = chcr_cra_init,
3699 .cra_exit = chcr_cra_exit,
3700 .cra_u.ablkcipher = {
3701 .min_keysize = AES_MIN_KEY_SIZE,
3702 .max_keysize = AES_MAX_KEY_SIZE,
3703 .ivsize = AES_BLOCK_SIZE,
3704 .setkey = chcr_aes_ctr_setkey,
3705 .encrypt = chcr_aes_encrypt,
3706 .decrypt = chcr_aes_decrypt,
3707 }
3708 }
3709 },
3710 {
3711 .type = CRYPTO_ALG_TYPE_ABLKCIPHER |
3712 CRYPTO_ALG_SUB_TYPE_CTR_RFC3686,
3713 .is_registered = 0,
3714 .alg.crypto = {
3715 .cra_name = "rfc3686(ctr(aes))",
3716 .cra_driver_name = "rfc3686-ctr-aes-chcr",
3717 .cra_blocksize = 1,
3718 .cra_init = chcr_rfc3686_init,
3719 .cra_exit = chcr_cra_exit,
3720 .cra_u.ablkcipher = {
3721 .min_keysize = AES_MIN_KEY_SIZE +
3722 CTR_RFC3686_NONCE_SIZE,
3723 .max_keysize = AES_MAX_KEY_SIZE +
3724 CTR_RFC3686_NONCE_SIZE,
3725 .ivsize = CTR_RFC3686_IV_SIZE,
3726 .setkey = chcr_aes_rfc3686_setkey,
3727 .encrypt = chcr_aes_encrypt,
3728 .decrypt = chcr_aes_decrypt,
3729 .geniv = "seqiv",
3730 }
324429d7
HS		 3731 }
3732 },
3733 /* SHA */
3734 {
3735 .type = CRYPTO_ALG_TYPE_AHASH,
3736 .is_registered = 0,
3737 .alg.hash = {
3738 .halg.digestsize = SHA1_DIGEST_SIZE,
3739 .halg.base = {
3740 .cra_name = "sha1",
3741 .cra_driver_name = "sha1-chcr",
3742 .cra_blocksize = SHA1_BLOCK_SIZE,
3743 }
3744 }
3745 },
3746 {
3747 .type = CRYPTO_ALG_TYPE_AHASH,
3748 .is_registered = 0,
3749 .alg.hash = {
3750 .halg.digestsize = SHA256_DIGEST_SIZE,
3751 .halg.base = {
3752 .cra_name = "sha256",
3753 .cra_driver_name = "sha256-chcr",
3754 .cra_blocksize = SHA256_BLOCK_SIZE,
3755 }
3756 }
3757 },
3758 {
3759 .type = CRYPTO_ALG_TYPE_AHASH,
3760 .is_registered = 0,
3761 .alg.hash = {
3762 .halg.digestsize = SHA224_DIGEST_SIZE,
3763 .halg.base = {
3764 .cra_name = "sha224",
3765 .cra_driver_name = "sha224-chcr",
3766 .cra_blocksize = SHA224_BLOCK_SIZE,
3767 }
3768 }
3769 },
3770 {
3771 .type = CRYPTO_ALG_TYPE_AHASH,
3772 .is_registered = 0,
3773 .alg.hash = {
3774 .halg.digestsize = SHA384_DIGEST_SIZE,
3775 .halg.base = {
3776 .cra_name = "sha384",
3777 .cra_driver_name = "sha384-chcr",
3778 .cra_blocksize = SHA384_BLOCK_SIZE,
3779 }
3780 }
3781 },
3782 {
3783 .type = CRYPTO_ALG_TYPE_AHASH,
3784 .is_registered = 0,
3785 .alg.hash = {
3786 .halg.digestsize = SHA512_DIGEST_SIZE,
3787 .halg.base = {
3788 .cra_name = "sha512",
3789 .cra_driver_name = "sha512-chcr",
3790 .cra_blocksize = SHA512_BLOCK_SIZE,
3791 }
3792 }
3793 },
3794 /* HMAC */
3795 {
3796 .type = CRYPTO_ALG_TYPE_HMAC,
3797 .is_registered = 0,
3798 .alg.hash = {
3799 .halg.digestsize = SHA1_DIGEST_SIZE,
3800 .halg.base = {
3801 .cra_name = "hmac(sha1)",
2debd332 3802 .cra_driver_name = "hmac-sha1-chcr",
324429d7
HS		 3803 .cra_blocksize = SHA1_BLOCK_SIZE,
3804 }
3805 }
3806 },
3807 {
3808 .type = CRYPTO_ALG_TYPE_HMAC,
3809 .is_registered = 0,
3810 .alg.hash = {
3811 .halg.digestsize = SHA224_DIGEST_SIZE,
3812 .halg.base = {
3813 .cra_name = "hmac(sha224)",
2debd332 3814 .cra_driver_name = "hmac-sha224-chcr",
324429d7
HS		 3815 .cra_blocksize = SHA224_BLOCK_SIZE,
3816 }
3817 }
3818 },
3819 {
3820 .type = CRYPTO_ALG_TYPE_HMAC,
3821 .is_registered = 0,
3822 .alg.hash = {
3823 .halg.digestsize = SHA256_DIGEST_SIZE,
3824 .halg.base = {
3825 .cra_name = "hmac(sha256)",
2debd332 3826 .cra_driver_name = "hmac-sha256-chcr",
324429d7
HS		 3827 .cra_blocksize = SHA256_BLOCK_SIZE,
3828 }
3829 }
3830 },
3831 {
3832 .type = CRYPTO_ALG_TYPE_HMAC,
3833 .is_registered = 0,
3834 .alg.hash = {
3835 .halg.digestsize = SHA384_DIGEST_SIZE,
3836 .halg.base = {
3837 .cra_name = "hmac(sha384)",
2debd332 3838 .cra_driver_name = "hmac-sha384-chcr",
324429d7
HS		 3839 .cra_blocksize = SHA384_BLOCK_SIZE,
3840 }
3841 }
3842 },
3843 {
3844 .type = CRYPTO_ALG_TYPE_HMAC,
3845 .is_registered = 0,
3846 .alg.hash = {
3847 .halg.digestsize = SHA512_DIGEST_SIZE,
3848 .halg.base = {
3849 .cra_name = "hmac(sha512)",
2debd332 3850 .cra_driver_name = "hmac-sha512-chcr",
324429d7
HS		 3851 .cra_blocksize = SHA512_BLOCK_SIZE,
3852 }
3853 }
3854 },
2debd332
HJ		 3855 /* Add AEAD Algorithms */
3856 {
3857 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_GCM,
3858 .is_registered = 0,
3859 .alg.aead = {
3860 .base = {
3861 .cra_name = "gcm(aes)",
3862 .cra_driver_name = "gcm-aes-chcr",
3863 .cra_blocksize = 1,
e29abda5 3864 .cra_priority = CHCR_AEAD_PRIORITY,
2debd332
HJ		 3865 .cra_ctxsize = sizeof(struct chcr_context) +
3866 sizeof(struct chcr_aead_ctx) +
3867 sizeof(struct chcr_gcm_ctx),
3868 },
8f6acb7f 3869 .ivsize = GCM_AES_IV_SIZE,
2debd332
HJ		 3870 .maxauthsize = GHASH_DIGEST_SIZE,
3871 .setkey = chcr_gcm_setkey,
3872 .setauthsize = chcr_gcm_setauthsize,
3873 }
3874 },
3875 {
3876 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106,
3877 .is_registered = 0,
3878 .alg.aead = {
3879 .base = {
3880 .cra_name = "rfc4106(gcm(aes))",
3881 .cra_driver_name = "rfc4106-gcm-aes-chcr",
3882 .cra_blocksize = 1,
e29abda5 3883 .cra_priority = CHCR_AEAD_PRIORITY + 1,
2debd332
HJ		 3884 .cra_ctxsize = sizeof(struct chcr_context) +
3885 sizeof(struct chcr_aead_ctx) +
3886 sizeof(struct chcr_gcm_ctx),
3887
3888 },
8f6acb7f 3889 .ivsize = GCM_RFC4106_IV_SIZE,
2debd332
HJ		 3890 .maxauthsize = GHASH_DIGEST_SIZE,
3891 .setkey = chcr_gcm_setkey,
3892 .setauthsize = chcr_4106_4309_setauthsize,
3893 }
3894 },
3895 {
3896 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_CCM,
3897 .is_registered = 0,
3898 .alg.aead = {
3899 .base = {
3900 .cra_name = "ccm(aes)",
3901 .cra_driver_name = "ccm-aes-chcr",
3902 .cra_blocksize = 1,
e29abda5 3903 .cra_priority = CHCR_AEAD_PRIORITY,
2debd332
HJ		 3904 .cra_ctxsize = sizeof(struct chcr_context) +
3905 sizeof(struct chcr_aead_ctx),
3906
3907 },
3908 .ivsize = AES_BLOCK_SIZE,
3909 .maxauthsize = GHASH_DIGEST_SIZE,
3910 .setkey = chcr_aead_ccm_setkey,
3911 .setauthsize = chcr_ccm_setauthsize,
3912 }
3913 },
3914 {
3915 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309,
3916 .is_registered = 0,
3917 .alg.aead = {
3918 .base = {
3919 .cra_name = "rfc4309(ccm(aes))",
3920 .cra_driver_name = "rfc4309-ccm-aes-chcr",
3921 .cra_blocksize = 1,
e29abda5 3922 .cra_priority = CHCR_AEAD_PRIORITY + 1,
2debd332
HJ		 3923 .cra_ctxsize = sizeof(struct chcr_context) +
3924 sizeof(struct chcr_aead_ctx),
3925
3926 },
3927 .ivsize = 8,
3928 .maxauthsize = GHASH_DIGEST_SIZE,
3929 .setkey = chcr_aead_rfc4309_setkey,
3930 .setauthsize = chcr_4106_4309_setauthsize,
3931 }
3932 },
3933 {
3d64bd67 3934 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
2debd332
HJ		 3935 .is_registered = 0,
3936 .alg.aead = {
3937 .base = {
3938 .cra_name = "authenc(hmac(sha1),cbc(aes))",
3939 .cra_driver_name =
3940 "authenc-hmac-sha1-cbc-aes-chcr",
3941 .cra_blocksize = AES_BLOCK_SIZE,
e29abda5 3942 .cra_priority = CHCR_AEAD_PRIORITY,
2debd332
HJ		 3943 .cra_ctxsize = sizeof(struct chcr_context) +
3944 sizeof(struct chcr_aead_ctx) +
3945 sizeof(struct chcr_authenc_ctx),
3946
3947 },
3948 .ivsize = AES_BLOCK_SIZE,
3949 .maxauthsize = SHA1_DIGEST_SIZE,
3950 .setkey = chcr_authenc_setkey,
3951 .setauthsize = chcr_authenc_setauthsize,
3952 }
3953 },
3954 {
3d64bd67 3955 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
2debd332
HJ		 3956 .is_registered = 0,
3957 .alg.aead = {
3958 .base = {
3959
3960 .cra_name = "authenc(hmac(sha256),cbc(aes))",
3961 .cra_driver_name =
3962 "authenc-hmac-sha256-cbc-aes-chcr",
3963 .cra_blocksize = AES_BLOCK_SIZE,
e29abda5 3964 .cra_priority = CHCR_AEAD_PRIORITY,
2debd332
HJ		 3965 .cra_ctxsize = sizeof(struct chcr_context) +
3966 sizeof(struct chcr_aead_ctx) +
3967 sizeof(struct chcr_authenc_ctx),
3968
3969 },
3970 .ivsize = AES_BLOCK_SIZE,
3971 .maxauthsize = SHA256_DIGEST_SIZE,
3972 .setkey = chcr_authenc_setkey,
3973 .setauthsize = chcr_authenc_setauthsize,
3974 }
3975 },
3976 {
3d64bd67 3977 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
2debd332
HJ		 3978 .is_registered = 0,
3979 .alg.aead = {
3980 .base = {
3981 .cra_name = "authenc(hmac(sha224),cbc(aes))",
3982 .cra_driver_name =
3983 "authenc-hmac-sha224-cbc-aes-chcr",
3984 .cra_blocksize = AES_BLOCK_SIZE,
e29abda5 3985 .cra_priority = CHCR_AEAD_PRIORITY,
2debd332
HJ		 3986 .cra_ctxsize = sizeof(struct chcr_context) +
3987 sizeof(struct chcr_aead_ctx) +
3988 sizeof(struct chcr_authenc_ctx),
3989 },
3990 .ivsize = AES_BLOCK_SIZE,
3991 .maxauthsize = SHA224_DIGEST_SIZE,
3992 .setkey = chcr_authenc_setkey,
3993 .setauthsize = chcr_authenc_setauthsize,
3994 }
3995 },
3996 {
3d64bd67 3997 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
2debd332
HJ		 3998 .is_registered = 0,
3999 .alg.aead = {
4000 .base = {
4001 .cra_name = "authenc(hmac(sha384),cbc(aes))",
4002 .cra_driver_name =
4003 "authenc-hmac-sha384-cbc-aes-chcr",
4004 .cra_blocksize = AES_BLOCK_SIZE,
e29abda5 4005 .cra_priority = CHCR_AEAD_PRIORITY,
2debd332
HJ		 4006 .cra_ctxsize = sizeof(struct chcr_context) +
4007 sizeof(struct chcr_aead_ctx) +
4008 sizeof(struct chcr_authenc_ctx),
4009
4010 },
4011 .ivsize = AES_BLOCK_SIZE,
4012 .maxauthsize = SHA384_DIGEST_SIZE,
4013 .setkey = chcr_authenc_setkey,
4014 .setauthsize = chcr_authenc_setauthsize,
4015 }
4016 },
4017 {
3d64bd67 4018 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
2debd332
HJ		 4019 .is_registered = 0,
4020 .alg.aead = {
4021 .base = {
4022 .cra_name = "authenc(hmac(sha512),cbc(aes))",
4023 .cra_driver_name =
4024 "authenc-hmac-sha512-cbc-aes-chcr",
4025 .cra_blocksize = AES_BLOCK_SIZE,
e29abda5 4026 .cra_priority = CHCR_AEAD_PRIORITY,
2debd332
HJ		 4027 .cra_ctxsize = sizeof(struct chcr_context) +
4028 sizeof(struct chcr_aead_ctx) +
4029 sizeof(struct chcr_authenc_ctx),
4030
4031 },
4032 .ivsize = AES_BLOCK_SIZE,
4033 .maxauthsize = SHA512_DIGEST_SIZE,
4034 .setkey = chcr_authenc_setkey,
4035 .setauthsize = chcr_authenc_setauthsize,
4036 }
4037 },
4038 {
3d64bd67 4039 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_NULL,
2debd332
HJ		 4040 .is_registered = 0,
4041 .alg.aead = {
4042 .base = {
4043 .cra_name = "authenc(digest_null,cbc(aes))",
4044 .cra_driver_name =
4045 "authenc-digest_null-cbc-aes-chcr",
4046 .cra_blocksize = AES_BLOCK_SIZE,
e29abda5 4047 .cra_priority = CHCR_AEAD_PRIORITY,
2debd332
HJ		 4048 .cra_ctxsize = sizeof(struct chcr_context) +
4049 sizeof(struct chcr_aead_ctx) +
4050 sizeof(struct chcr_authenc_ctx),
4051
4052 },
4053 .ivsize = AES_BLOCK_SIZE,
4054 .maxauthsize = 0,
4055 .setkey = chcr_aead_digest_null_setkey,
4056 .setauthsize = chcr_authenc_null_setauthsize,
4057 }
4058 },
3d64bd67
HJ		 4059 {
4060 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4061 .is_registered = 0,
4062 .alg.aead = {
4063 .base = {
4064 .cra_name = "authenc(hmac(sha1),rfc3686(ctr(aes)))",
4065 .cra_driver_name =
4066 "authenc-hmac-sha1-rfc3686-ctr-aes-chcr",
4067 .cra_blocksize = 1,
4068 .cra_priority = CHCR_AEAD_PRIORITY,
4069 .cra_ctxsize = sizeof(struct chcr_context) +
4070 sizeof(struct chcr_aead_ctx) +
4071 sizeof(struct chcr_authenc_ctx),
4072
4073 },
4074 .ivsize = CTR_RFC3686_IV_SIZE,
4075 .maxauthsize = SHA1_DIGEST_SIZE,
4076 .setkey = chcr_authenc_setkey,
4077 .setauthsize = chcr_authenc_setauthsize,
4078 }
4079 },
4080 {
4081 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4082 .is_registered = 0,
4083 .alg.aead = {
4084 .base = {
4085
4086 .cra_name = "authenc(hmac(sha256),rfc3686(ctr(aes)))",
4087 .cra_driver_name =
4088 "authenc-hmac-sha256-rfc3686-ctr-aes-chcr",
4089 .cra_blocksize = 1,
4090 .cra_priority = CHCR_AEAD_PRIORITY,
4091 .cra_ctxsize = sizeof(struct chcr_context) +
4092 sizeof(struct chcr_aead_ctx) +
4093 sizeof(struct chcr_authenc_ctx),
4094
4095 },
4096 .ivsize = CTR_RFC3686_IV_SIZE,
4097 .maxauthsize = SHA256_DIGEST_SIZE,
4098 .setkey = chcr_authenc_setkey,
4099 .setauthsize = chcr_authenc_setauthsize,
4100 }
4101 },
4102 {
4103 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4104 .is_registered = 0,
4105 .alg.aead = {
4106 .base = {
4107 .cra_name = "authenc(hmac(sha224),rfc3686(ctr(aes)))",
4108 .cra_driver_name =
4109 "authenc-hmac-sha224-rfc3686-ctr-aes-chcr",
4110 .cra_blocksize = 1,
4111 .cra_priority = CHCR_AEAD_PRIORITY,
4112 .cra_ctxsize = sizeof(struct chcr_context) +
4113 sizeof(struct chcr_aead_ctx) +
4114 sizeof(struct chcr_authenc_ctx),
4115 },
4116 .ivsize = CTR_RFC3686_IV_SIZE,
4117 .maxauthsize = SHA224_DIGEST_SIZE,
4118 .setkey = chcr_authenc_setkey,
4119 .setauthsize = chcr_authenc_setauthsize,
4120 }
4121 },
4122 {
4123 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4124 .is_registered = 0,
4125 .alg.aead = {
4126 .base = {
4127 .cra_name = "authenc(hmac(sha384),rfc3686(ctr(aes)))",
4128 .cra_driver_name =
4129 "authenc-hmac-sha384-rfc3686-ctr-aes-chcr",
4130 .cra_blocksize = 1,
4131 .cra_priority = CHCR_AEAD_PRIORITY,
4132 .cra_ctxsize = sizeof(struct chcr_context) +
4133 sizeof(struct chcr_aead_ctx) +
4134 sizeof(struct chcr_authenc_ctx),
4135
4136 },
4137 .ivsize = CTR_RFC3686_IV_SIZE,
4138 .maxauthsize = SHA384_DIGEST_SIZE,
4139 .setkey = chcr_authenc_setkey,
4140 .setauthsize = chcr_authenc_setauthsize,
4141 }
4142 },
4143 {
4144 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4145 .is_registered = 0,
4146 .alg.aead = {
4147 .base = {
4148 .cra_name = "authenc(hmac(sha512),rfc3686(ctr(aes)))",
4149 .cra_driver_name =
4150 "authenc-hmac-sha512-rfc3686-ctr-aes-chcr",
4151 .cra_blocksize = 1,
4152 .cra_priority = CHCR_AEAD_PRIORITY,
4153 .cra_ctxsize = sizeof(struct chcr_context) +
4154 sizeof(struct chcr_aead_ctx) +
4155 sizeof(struct chcr_authenc_ctx),
4156
4157 },
4158 .ivsize = CTR_RFC3686_IV_SIZE,
4159 .maxauthsize = SHA512_DIGEST_SIZE,
4160 .setkey = chcr_authenc_setkey,
4161 .setauthsize = chcr_authenc_setauthsize,
4162 }
4163 },
4164 {
4165 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_NULL,
4166 .is_registered = 0,
4167 .alg.aead = {
4168 .base = {
4169 .cra_name = "authenc(digest_null,rfc3686(ctr(aes)))",
4170 .cra_driver_name =
4171 "authenc-digest_null-rfc3686-ctr-aes-chcr",
4172 .cra_blocksize = 1,
4173 .cra_priority = CHCR_AEAD_PRIORITY,
4174 .cra_ctxsize = sizeof(struct chcr_context) +
4175 sizeof(struct chcr_aead_ctx) +
4176 sizeof(struct chcr_authenc_ctx),
4177
4178 },
4179 .ivsize = CTR_RFC3686_IV_SIZE,
4180 .maxauthsize = 0,
4181 .setkey = chcr_aead_digest_null_setkey,
4182 .setauthsize = chcr_authenc_null_setauthsize,
4183 }
4184 },
4185
324429d7
HS		 4186};
4187
4188/*
4189 * chcr_unregister_alg - Deregister crypto algorithms with
4190 * kernel framework.
4191 */
4192static int chcr_unregister_alg(void)
4193{
4194 int i;
4195
4196 for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
4197 switch (driver_algs[i].type & CRYPTO_ALG_TYPE_MASK) {
4198 case CRYPTO_ALG_TYPE_ABLKCIPHER:
4199 if (driver_algs[i].is_registered)
4200 crypto_unregister_alg(
4201 &driver_algs[i].alg.crypto);
4202 break;
2debd332
HJ		 4203 case CRYPTO_ALG_TYPE_AEAD:
4204 if (driver_algs[i].is_registered)
4205 crypto_unregister_aead(
4206 &driver_algs[i].alg.aead);
4207 break;
324429d7
HS		 4208 case CRYPTO_ALG_TYPE_AHASH:
4209 if (driver_algs[i].is_registered)
4210 crypto_unregister_ahash(
4211 &driver_algs[i].alg.hash);
4212 break;
4213 }
4214 driver_algs[i].is_registered = 0;
4215 }
4216 return 0;
4217}
4218
4219#define SZ_AHASH_CTX sizeof(struct chcr_context)
4220#define SZ_AHASH_H_CTX (sizeof(struct chcr_context) + sizeof(struct hmac_ctx))
4221#define SZ_AHASH_REQ_CTX sizeof(struct chcr_ahash_req_ctx)
4222#define AHASH_CRA_FLAGS (CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_ASYNC)
4223
4224/*
4225 * chcr_register_alg - Register crypto algorithms with kernel framework.
4226 */
4227static int chcr_register_alg(void)
4228{
4229 struct crypto_alg ai;
4230 struct ahash_alg *a_hash;
4231 int err = 0, i;
4232 char *name = NULL;
4233
4234 for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
4235 if (driver_algs[i].is_registered)
4236 continue;
4237 switch (driver_algs[i].type & CRYPTO_ALG_TYPE_MASK) {
4238 case CRYPTO_ALG_TYPE_ABLKCIPHER:
b8fd1f41
HJ		 4239 driver_algs[i].alg.crypto.cra_priority =
4240 CHCR_CRA_PRIORITY;
4241 driver_algs[i].alg.crypto.cra_module = THIS_MODULE;
4242 driver_algs[i].alg.crypto.cra_flags =
4243 CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC |
4244 CRYPTO_ALG_NEED_FALLBACK;
4245 driver_algs[i].alg.crypto.cra_ctxsize =
4246 sizeof(struct chcr_context) +
4247 sizeof(struct ablk_ctx);
4248 driver_algs[i].alg.crypto.cra_alignmask = 0;
4249 driver_algs[i].alg.crypto.cra_type =
4250 &crypto_ablkcipher_type;
324429d7
HS		 4251 err = crypto_register_alg(&driver_algs[i].alg.crypto);
4252 name = driver_algs[i].alg.crypto.cra_driver_name;
4253 break;
2debd332 4254 case CRYPTO_ALG_TYPE_AEAD:
2debd332 4255 driver_algs[i].alg.aead.base.cra_flags =
0e93708d
HJ		 4256 CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC |
4257 CRYPTO_ALG_NEED_FALLBACK;
2debd332
HJ		 4258 driver_algs[i].alg.aead.encrypt = chcr_aead_encrypt;
4259 driver_algs[i].alg.aead.decrypt = chcr_aead_decrypt;
4260 driver_algs[i].alg.aead.init = chcr_aead_cra_init;
4261 driver_algs[i].alg.aead.exit = chcr_aead_cra_exit;
4262 driver_algs[i].alg.aead.base.cra_module = THIS_MODULE;
4263 err = crypto_register_aead(&driver_algs[i].alg.aead);
4264 name = driver_algs[i].alg.aead.base.cra_driver_name;
4265 break;
324429d7
HS		 4266 case CRYPTO_ALG_TYPE_AHASH:
4267 a_hash = &driver_algs[i].alg.hash;
4268 a_hash->update = chcr_ahash_update;
4269 a_hash->final = chcr_ahash_final;
4270 a_hash->finup = chcr_ahash_finup;
4271 a_hash->digest = chcr_ahash_digest;
4272 a_hash->export = chcr_ahash_export;
4273 a_hash->import = chcr_ahash_import;
4274 a_hash->halg.statesize = SZ_AHASH_REQ_CTX;
4275 a_hash->halg.base.cra_priority = CHCR_CRA_PRIORITY;
4276 a_hash->halg.base.cra_module = THIS_MODULE;
4277 a_hash->halg.base.cra_flags = AHASH_CRA_FLAGS;
4278 a_hash->halg.base.cra_alignmask = 0;
4279 a_hash->halg.base.cra_exit = NULL;
4280 a_hash->halg.base.cra_type = &crypto_ahash_type;
4281
4282 if (driver_algs[i].type == CRYPTO_ALG_TYPE_HMAC) {
4283 a_hash->halg.base.cra_init = chcr_hmac_cra_init;
4284 a_hash->halg.base.cra_exit = chcr_hmac_cra_exit;
4285 a_hash->init = chcr_hmac_init;
4286 a_hash->setkey = chcr_ahash_setkey;
4287 a_hash->halg.base.cra_ctxsize = SZ_AHASH_H_CTX;
4288 } else {
4289 a_hash->init = chcr_sha_init;
4290 a_hash->halg.base.cra_ctxsize = SZ_AHASH_CTX;
4291 a_hash->halg.base.cra_init = chcr_sha_cra_init;
4292 }
4293 err = crypto_register_ahash(&driver_algs[i].alg.hash);
4294 ai = driver_algs[i].alg.hash.halg.base;
4295 name = ai.cra_driver_name;
4296 break;
4297 }
4298 if (err) {
4299 pr_err("chcr : %s : Algorithm registration failed\n",
4300 name);
4301 goto register_err;
4302 } else {
4303 driver_algs[i].is_registered = 1;
4304 }
4305 }
4306 return 0;
4307
4308register_err:
4309 chcr_unregister_alg();
4310 return err;
4311}
4312
4313/*
4314 * start_crypto - Register the crypto algorithms.
4315 * This should called once when the first device comesup. After this
4316 * kernel will start calling driver APIs for crypto operations.
4317 */
4318int start_crypto(void)
4319{
4320 return chcr_register_alg();
4321}
4322
4323/*
4324 * stop_crypto - Deregister all the crypto algorithms with kernel.
4325 * This should be called once when the last device goes down. After this
4326 * kernel will not call the driver API for crypto operations.
4327 */
4328int stop_crypto(void)
4329{
4330 chcr_unregister_alg();
4331 return 0;
4332}
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