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crypto: chelsio - Use kernel round function to align lengths
[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
2f47d580
HJ		 134static int sg_nents_xlen(struct scatterlist *sg, unsigned int reqlen,
135 unsigned int entlen,
136 unsigned int skip)
2956f36c
HJ		 137{
138 int nents = 0;
139 unsigned int less;
2f47d580 140 unsigned int skip_len = 0;
2956f36c 141
2f47d580
HJ		 142 while (sg && skip) {
143 if (sg_dma_len(sg) <= skip) {
144 skip -= sg_dma_len(sg);
145 skip_len = 0;
146 sg = sg_next(sg);
147 } else {
148 skip_len = skip;
149 skip = 0;
150 }
2956f36c
HJ		 151 }
152
2f47d580
HJ		 153 while (sg && reqlen) {
154 less = min(reqlen, sg_dma_len(sg) - skip_len);
155 nents += DIV_ROUND_UP(less, entlen);
156 reqlen -= less;
157 skip_len = 0;
158 sg = sg_next(sg);
159 }
2956f36c
HJ		 160 return nents;
161}
162
2f47d580
HJ		 163static inline void chcr_handle_ahash_resp(struct ahash_request *req,
164 unsigned char *input,
165 int err)
166{
167 struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req);
168 int digestsize, updated_digestsize;
169 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
170 struct uld_ctx *u_ctx = ULD_CTX(h_ctx(tfm));
171
172 if (input == NULL)
173 goto out;
2f47d580
HJ		 174 digestsize = crypto_ahash_digestsize(crypto_ahash_reqtfm(req));
175 if (reqctx->is_sg_map)
176 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
177 if (reqctx->dma_addr)
178 dma_unmap_single(&u_ctx->lldi.pdev->dev, reqctx->dma_addr,
179 reqctx->dma_len, DMA_TO_DEVICE);
180 reqctx->dma_addr = 0;
181 updated_digestsize = digestsize;
182 if (digestsize == SHA224_DIGEST_SIZE)
183 updated_digestsize = SHA256_DIGEST_SIZE;
184 else if (digestsize == SHA384_DIGEST_SIZE)
185 updated_digestsize = SHA512_DIGEST_SIZE;
186 if (reqctx->result == 1) {
187 reqctx->result = 0;
188 memcpy(req->result, input + sizeof(struct cpl_fw6_pld),
189 digestsize);
190 } else {
191 memcpy(reqctx->partial_hash, input + sizeof(struct cpl_fw6_pld),
192 updated_digestsize);
193 }
194out:
195 req->base.complete(&req->base, err);
6dad4e8a 196}
2f47d580 197
6dad4e8a 198static inline int get_aead_subtype(struct crypto_aead *aead)
2f47d580 199{
6dad4e8a
AG		 200 struct aead_alg *alg = crypto_aead_alg(aead);
201 struct chcr_alg_template *chcr_crypto_alg =
202 container_of(alg, struct chcr_alg_template, alg.aead);
203 return chcr_crypto_alg->type & CRYPTO_ALG_SUB_TYPE_MASK;
2f47d580 204}
2f47d580 205
6dad4e8a 206void chcr_verify_tag(struct aead_request *req, u8 *input, int *err)
2debd332
HJ		 207{
208 u8 temp[SHA512_DIGEST_SIZE];
209 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
210 int authsize = crypto_aead_authsize(tfm);
211 struct cpl_fw6_pld *fw6_pld;
212 int cmp = 0;
213
214 fw6_pld = (struct cpl_fw6_pld *)input;
215 if ((get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106) ||
216 (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_GCM)) {
d600fc8a 217 cmp = crypto_memneq(&fw6_pld->data[2], (fw6_pld + 1), authsize);
2debd332
HJ		 218 } else {
219
220 sg_pcopy_to_buffer(req->src, sg_nents(req->src), temp,
221 authsize, req->assoclen +
222 req->cryptlen - authsize);
d600fc8a 223 cmp = crypto_memneq(temp, (fw6_pld + 1), authsize);
2debd332
HJ		 224 }
225 if (cmp)
226 *err = -EBADMSG;
227 else
228 *err = 0;
229}
230
6dad4e8a
AG		 231static inline void chcr_handle_aead_resp(struct aead_request *req,
232 unsigned char *input,
233 int err)
234{
235 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
236 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
237 struct uld_ctx *u_ctx = ULD_CTX(a_ctx(tfm));
238
239 chcr_aead_dma_unmap(&u_ctx->lldi.pdev->dev, req, reqctx->op);
240 if (reqctx->b0_dma)
241 dma_unmap_single(&u_ctx->lldi.pdev->dev, reqctx->b0_dma,
242 reqctx->b0_len, DMA_BIDIRECTIONAL);
243 if (reqctx->verify == VERIFY_SW) {
244 chcr_verify_tag(req, input, &err);
245 reqctx->verify = VERIFY_HW;
246 }
247 req->base.complete(&req->base, err);
248}
249
324429d7
HS		 250/*
251 * chcr_handle_resp - Unmap the DMA buffers associated with the request
252 * @req: crypto request
253 */
254int chcr_handle_resp(struct crypto_async_request *req, unsigned char *input,
2debd332 255 int err)
324429d7
HS		 256{
257 struct crypto_tfm *tfm = req->tfm;
258 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
ee0863ba 259 struct adapter *adap = padap(ctx->dev);
324429d7
HS		 260
261 switch (tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK) {
2debd332 262 case CRYPTO_ALG_TYPE_AEAD:
2f47d580 263 chcr_handle_aead_resp(aead_request_cast(req), input, err);
2debd332
HJ		 264 break;
265
44e9f799 266 case CRYPTO_ALG_TYPE_ABLKCIPHER:
b8fd1f41
HJ		 267 err = chcr_handle_cipher_resp(ablkcipher_request_cast(req),
268 input, err);
324429d7
HS		 269 break;
270
271 case CRYPTO_ALG_TYPE_AHASH:
2f47d580 272 chcr_handle_ahash_resp(ahash_request_cast(req), input, err);
324429d7 273 }
ee0863ba 274 atomic_inc(&adap->chcr_stats.complete);
2debd332 275 return err;
324429d7
HS		 276}
277
2f47d580 278static void get_aes_decrypt_key(unsigned char *dec_key,
39f91a34
HJ		 279 const unsigned char *key,
280 unsigned int keylength)
281{
282 u32 temp;
283 u32 w_ring[MAX_NK];
284 int i, j, k;
285 u8 nr, nk;
286
287 switch (keylength) {
288 case AES_KEYLENGTH_128BIT:
289 nk = KEYLENGTH_4BYTES;
290 nr = NUMBER_OF_ROUNDS_10;
291 break;
292 case AES_KEYLENGTH_192BIT:
293 nk = KEYLENGTH_6BYTES;
294 nr = NUMBER_OF_ROUNDS_12;
295 break;
296 case AES_KEYLENGTH_256BIT:
297 nk = KEYLENGTH_8BYTES;
298 nr = NUMBER_OF_ROUNDS_14;
299 break;
300 default:
301 return;
302 }
303 for (i = 0; i < nk; i++)
304 w_ring[i] = be32_to_cpu(*(u32 *)&key[4 * i]);
305
306 i = 0;
307 temp = w_ring[nk - 1];
308 while (i + nk < (nr + 1) * 4) {
309 if (!(i % nk)) {
310 /* RotWord(temp) */
311 temp = (temp << 8) | (temp >> 24);
312 temp = aes_ks_subword(temp);
313 temp ^= round_constant[i / nk];
314 } else if (nk == 8 && (i % 4 == 0)) {
315 temp = aes_ks_subword(temp);
316 }
317 w_ring[i % nk] ^= temp;
318 temp = w_ring[i % nk];
319 i++;
320 }
321 i--;
322 for (k = 0, j = i % nk; k < nk; k++) {
323 *((u32 *)dec_key + k) = htonl(w_ring[j]);
324 j--;
325 if (j < 0)
326 j += nk;
327 }
328}
329
e7922729 330static struct crypto_shash *chcr_alloc_shash(unsigned int ds)
324429d7 331{
ec1bca94 332 struct crypto_shash *base_hash = ERR_PTR(-EINVAL);
324429d7
HS		 333
334 switch (ds) {
335 case SHA1_DIGEST_SIZE:
e7922729 336 base_hash = crypto_alloc_shash("sha1", 0, 0);
324429d7
HS		 337 break;
338 case SHA224_DIGEST_SIZE:
e7922729 339 base_hash = crypto_alloc_shash("sha224", 0, 0);
324429d7
HS		 340 break;
341 case SHA256_DIGEST_SIZE:
e7922729 342 base_hash = crypto_alloc_shash("sha256", 0, 0);
324429d7
HS		 343 break;
344 case SHA384_DIGEST_SIZE:
e7922729 345 base_hash = crypto_alloc_shash("sha384", 0, 0);
324429d7
HS		 346 break;
347 case SHA512_DIGEST_SIZE:
e7922729 348 base_hash = crypto_alloc_shash("sha512", 0, 0);
324429d7
HS		 349 break;
350 }
324429d7 351
e7922729 352 return base_hash;
324429d7
HS		 353}
354
355static int chcr_compute_partial_hash(struct shash_desc *desc,
356 char *iopad, char *result_hash,
357 int digest_size)
358{
359 struct sha1_state sha1_st;
360 struct sha256_state sha256_st;
361 struct sha512_state sha512_st;
362 int error;
363
364 if (digest_size == SHA1_DIGEST_SIZE) {
365 error = crypto_shash_init(desc) ?:
366 crypto_shash_update(desc, iopad, SHA1_BLOCK_SIZE) ?:
367 crypto_shash_export(desc, (void *)&sha1_st);
368 memcpy(result_hash, sha1_st.state, SHA1_DIGEST_SIZE);
369 } else if (digest_size == SHA224_DIGEST_SIZE) {
370 error = crypto_shash_init(desc) ?:
371 crypto_shash_update(desc, iopad, SHA256_BLOCK_SIZE) ?:
372 crypto_shash_export(desc, (void *)&sha256_st);
373 memcpy(result_hash, sha256_st.state, SHA256_DIGEST_SIZE);
374
375 } else if (digest_size == SHA256_DIGEST_SIZE) {
376 error = crypto_shash_init(desc) ?:
377 crypto_shash_update(desc, iopad, SHA256_BLOCK_SIZE) ?:
378 crypto_shash_export(desc, (void *)&sha256_st);
379 memcpy(result_hash, sha256_st.state, SHA256_DIGEST_SIZE);
380
381 } else if (digest_size == SHA384_DIGEST_SIZE) {
382 error = crypto_shash_init(desc) ?:
383 crypto_shash_update(desc, iopad, SHA512_BLOCK_SIZE) ?:
384 crypto_shash_export(desc, (void *)&sha512_st);
385 memcpy(result_hash, sha512_st.state, SHA512_DIGEST_SIZE);
386
387 } else if (digest_size == SHA512_DIGEST_SIZE) {
388 error = crypto_shash_init(desc) ?:
389 crypto_shash_update(desc, iopad, SHA512_BLOCK_SIZE) ?:
390 crypto_shash_export(desc, (void *)&sha512_st);
391 memcpy(result_hash, sha512_st.state, SHA512_DIGEST_SIZE);
392 } else {
393 error = -EINVAL;
394 pr_err("Unknown digest size %d\n", digest_size);
395 }
396 return error;
397}
398
399static void chcr_change_order(char *buf, int ds)
400{
401 int i;
402
403 if (ds == SHA512_DIGEST_SIZE) {
404 for (i = 0; i < (ds / sizeof(u64)); i++)
405 *((__be64 *)buf + i) =
406 cpu_to_be64(*((u64 *)buf + i));
407 } else {
408 for (i = 0; i < (ds / sizeof(u32)); i++)
409 *((__be32 *)buf + i) =
410 cpu_to_be32(*((u32 *)buf + i));
411 }
412}
413
414static inline int is_hmac(struct crypto_tfm *tfm)
415{
416 struct crypto_alg *alg = tfm->__crt_alg;
417 struct chcr_alg_template *chcr_crypto_alg =
418 container_of(__crypto_ahash_alg(alg), struct chcr_alg_template,
419 alg.hash);
5c86a8ff 420 if (chcr_crypto_alg->type == CRYPTO_ALG_TYPE_HMAC)
324429d7
HS		 421 return 1;
422 return 0;
423}
424
2f47d580
HJ		 425static inline void dsgl_walk_init(struct dsgl_walk *walk,
426 struct cpl_rx_phys_dsgl *dsgl)
324429d7 427{
2f47d580
HJ		 428 walk->dsgl = dsgl;
429 walk->nents = 0;
430 walk->to = (struct phys_sge_pairs *)(dsgl + 1);
431}
432
433static inline void dsgl_walk_end(struct dsgl_walk *walk, unsigned short qid)
434{
435 struct cpl_rx_phys_dsgl *phys_cpl;
436
437 phys_cpl = walk->dsgl;
324429d7
HS		 438
439 phys_cpl->op_to_tid = htonl(CPL_RX_PHYS_DSGL_OPCODE_V(CPL_RX_PHYS_DSGL)
440 | CPL_RX_PHYS_DSGL_ISRDMA_V(0));
2f47d580
HJ		 441 phys_cpl->pcirlxorder_to_noofsgentr =
442 htonl(CPL_RX_PHYS_DSGL_PCIRLXORDER_V(0) |
443 CPL_RX_PHYS_DSGL_PCINOSNOOP_V(0) |
444 CPL_RX_PHYS_DSGL_PCITPHNTENB_V(0) |
445 CPL_RX_PHYS_DSGL_PCITPHNT_V(0) |
446 CPL_RX_PHYS_DSGL_DCAID_V(0) |
447 CPL_RX_PHYS_DSGL_NOOFSGENTR_V(walk->nents));
448 phys_cpl->rss_hdr_int.opcode = CPL_RX_PHYS_ADDR;
449 phys_cpl->rss_hdr_int.qid = htons(qid);
450 phys_cpl->rss_hdr_int.hash_val = 0;
451}
452
453static inline void dsgl_walk_add_page(struct dsgl_walk *walk,
454 size_t size,
455 dma_addr_t *addr)
456{
457 int j;
458
459 if (!size)
460 return;
461 j = walk->nents;
462 walk->to->len[j % 8] = htons(size);
463 walk->to->addr[j % 8] = cpu_to_be64(*addr);
464 j++;
465 if ((j % 8) == 0)
466 walk->to++;
467 walk->nents = j;
468}
469
470static void dsgl_walk_add_sg(struct dsgl_walk *walk,
471 struct scatterlist *sg,
472 unsigned int slen,
473 unsigned int skip)
474{
475 int skip_len = 0;
476 unsigned int left_size = slen, len = 0;
477 unsigned int j = walk->nents;
478 int offset, ent_len;
479
480 if (!slen)
481 return;
482 while (sg && skip) {
483 if (sg_dma_len(sg) <= skip) {
484 skip -= sg_dma_len(sg);
485 skip_len = 0;
486 sg = sg_next(sg);
487 } else {
488 skip_len = skip;
489 skip = 0;
490 }
491 }
492
2956f36c 493 while (left_size && sg) {
2f47d580 494 len = min_t(u32, left_size, sg_dma_len(sg) - skip_len);
2956f36c
HJ		 495 offset = 0;
496 while (len) {
2f47d580
HJ		 497 ent_len = min_t(u32, len, CHCR_DST_SG_SIZE);
498 walk->to->len[j % 8] = htons(ent_len);
499 walk->to->addr[j % 8] = cpu_to_be64(sg_dma_address(sg) +
500 offset + skip_len);
2956f36c
HJ		 501 offset += ent_len;
502 len -= ent_len;
503 j++;
504 if ((j % 8) == 0)
2f47d580 505 walk->to++;
2956f36c 506 }
2f47d580
HJ		 507 walk->last_sg = sg;
508 walk->last_sg_len = min_t(u32, left_size, sg_dma_len(sg) -
509 skip_len) + skip_len;
510 left_size -= min_t(u32, left_size, sg_dma_len(sg) - skip_len);
511 skip_len = 0;
2956f36c
HJ		 512 sg = sg_next(sg);
513 }
2f47d580
HJ		 514 walk->nents = j;
515}
516
517static inline void ulptx_walk_init(struct ulptx_walk *walk,
518 struct ulptx_sgl *ulp)
519{
520 walk->sgl = ulp;
521 walk->nents = 0;
522 walk->pair_idx = 0;
523 walk->pair = ulp->sge;
524 walk->last_sg = NULL;
525 walk->last_sg_len = 0;
526}
527
528static inline void ulptx_walk_end(struct ulptx_walk *walk)
529{
530 walk->sgl->cmd_nsge = htonl(ULPTX_CMD_V(ULP_TX_SC_DSGL) |
531 ULPTX_NSGE_V(walk->nents));
532}
2956f36c 533
2f47d580
HJ		 534
535static inline void ulptx_walk_add_page(struct ulptx_walk *walk,
536 size_t size,
537 dma_addr_t *addr)
538{
539 if (!size)
540 return;
541
542 if (walk->nents == 0) {
543 walk->sgl->len0 = cpu_to_be32(size);
544 walk->sgl->addr0 = cpu_to_be64(*addr);
545 } else {
546 walk->pair->addr[walk->pair_idx] = cpu_to_be64(*addr);
547 walk->pair->len[walk->pair_idx] = cpu_to_be32(size);
548 walk->pair_idx = !walk->pair_idx;
549 if (!walk->pair_idx)
550 walk->pair++;
551 }
552 walk->nents++;
324429d7
HS		 553}
554
2f47d580 555static void ulptx_walk_add_sg(struct ulptx_walk *walk,
adf1ca61 556 struct scatterlist *sg,
2f47d580
HJ		 557 unsigned int len,
558 unsigned int skip)
324429d7 559{
2f47d580
HJ		 560 int small;
561 int skip_len = 0;
562 unsigned int sgmin;
324429d7 563
2f47d580
HJ		 564 if (!len)
565 return;
566
567 while (sg && skip) {
568 if (sg_dma_len(sg) <= skip) {
569 skip -= sg_dma_len(sg);
570 skip_len = 0;
571 sg = sg_next(sg);
572 } else {
573 skip_len = skip;
574 skip = 0;
575 }
576 }
8daa32b9
HJ		 577 WARN(!sg, "SG should not be null here\n");
578 if (sg && (walk->nents == 0)) {
2f47d580
HJ		 579 small = min_t(unsigned int, sg_dma_len(sg) - skip_len, len);
580 sgmin = min_t(unsigned int, small, CHCR_SRC_SG_SIZE);
581 walk->sgl->len0 = cpu_to_be32(sgmin);
582 walk->sgl->addr0 = cpu_to_be64(sg_dma_address(sg) + skip_len);
583 walk->nents++;
584 len -= sgmin;
585 walk->last_sg = sg;
586 walk->last_sg_len = sgmin + skip_len;
587 skip_len += sgmin;
588 if (sg_dma_len(sg) == skip_len) {
589 sg = sg_next(sg);
590 skip_len = 0;
591 }
592 }
593
594 while (sg && len) {
595 small = min(sg_dma_len(sg) - skip_len, len);
596 sgmin = min_t(unsigned int, small, CHCR_SRC_SG_SIZE);
597 walk->pair->len[walk->pair_idx] = cpu_to_be32(sgmin);
598 walk->pair->addr[walk->pair_idx] =
599 cpu_to_be64(sg_dma_address(sg) + skip_len);
600 walk->pair_idx = !walk->pair_idx;
601 walk->nents++;
602 if (!walk->pair_idx)
603 walk->pair++;
604 len -= sgmin;
605 skip_len += sgmin;
606 walk->last_sg = sg;
607 walk->last_sg_len = skip_len;
608 if (sg_dma_len(sg) == skip_len) {
609 sg = sg_next(sg);
610 skip_len = 0;
611 }
324429d7 612 }
324429d7
HS		 613}
614
615static inline int get_cryptoalg_subtype(struct crypto_tfm *tfm)
616{
617 struct crypto_alg *alg = tfm->__crt_alg;
618 struct chcr_alg_template *chcr_crypto_alg =
619 container_of(alg, struct chcr_alg_template, alg.crypto);
620
621 return chcr_crypto_alg->type & CRYPTO_ALG_SUB_TYPE_MASK;
622}
623
b8fd1f41
HJ		 624static int cxgb4_is_crypto_q_full(struct net_device *dev, unsigned int idx)
625{
626 struct adapter *adap = netdev2adap(dev);
627 struct sge_uld_txq_info *txq_info =
628 adap->sge.uld_txq_info[CXGB4_TX_CRYPTO];
629 struct sge_uld_txq *txq;
630 int ret = 0;
631
632 local_bh_disable();
633 txq = &txq_info->uldtxq[idx];
634 spin_lock(&txq->sendq.lock);
635 if (txq->full)
636 ret = -1;
637 spin_unlock(&txq->sendq.lock);
638 local_bh_enable();
639 return ret;
640}
641
324429d7
HS		 642static int generate_copy_rrkey(struct ablk_ctx *ablkctx,
643 struct _key_ctx *key_ctx)
644{
645 if (ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC) {
cc1b156d 646 memcpy(key_ctx->key, ablkctx->rrkey, ablkctx->enckey_len);
324429d7
HS		 647 } else {
648 memcpy(key_ctx->key,
649 ablkctx->key + (ablkctx->enckey_len >> 1),
650 ablkctx->enckey_len >> 1);
cc1b156d
HJ		 651 memcpy(key_ctx->key + (ablkctx->enckey_len >> 1),
652 ablkctx->rrkey, ablkctx->enckey_len >> 1);
324429d7
HS		 653 }
654 return 0;
655}
b8fd1f41
HJ		 656static int chcr_sg_ent_in_wr(struct scatterlist *src,
657 struct scatterlist *dst,
658 unsigned int minsg,
2f47d580
HJ		 659 unsigned int space,
660 unsigned int srcskip,
661 unsigned int dstskip)
b8fd1f41
HJ		 662{
663 int srclen = 0, dstlen = 0;
2f47d580 664 int srcsg = minsg, dstsg = minsg;
2956f36c 665 int offset = 0, less;
b8fd1f41 666
2f47d580
HJ		 667 if (sg_dma_len(src) == srcskip) {
668 src = sg_next(src);
669 srcskip = 0;
670 }
671
672 if (sg_dma_len(dst) == dstskip) {
673 dst = sg_next(dst);
674 dstskip = 0;
675 }
676
677 while (src && dst &&
b8fd1f41 678 space > (sgl_ent_len[srcsg + 1] + dsgl_ent_len[dstsg])) {
2f47d580 679 srclen += (sg_dma_len(src) - srcskip);
b8fd1f41 680 srcsg++;
2956f36c 681 offset = 0;
b8fd1f41
HJ		 682 while (dst && ((dstsg + 1) <= MAX_DSGL_ENT) &&
683 space > (sgl_ent_len[srcsg] + dsgl_ent_len[dstsg + 1])) {
684 if (srclen <= dstlen)
685 break;
2f47d580 686 less = min_t(unsigned int, sg_dma_len(dst) - offset -
db6deea4 687 dstskip, CHCR_DST_SG_SIZE);
2956f36c
HJ		 688 dstlen += less;
689 offset += less;
2f47d580 690 if (offset == sg_dma_len(dst)) {
2956f36c
HJ		 691 dst = sg_next(dst);
692 offset = 0;
693 }
b8fd1f41 694 dstsg++;
2f47d580 695 dstskip = 0;
b8fd1f41
HJ		 696 }
697 src = sg_next(src);
db6deea4 698 srcskip = 0;
b8fd1f41 699 }
b8fd1f41
HJ		 700 return min(srclen, dstlen);
701}
702
703static int chcr_cipher_fallback(struct crypto_skcipher *cipher,
704 u32 flags,
705 struct scatterlist *src,
706 struct scatterlist *dst,
707 unsigned int nbytes,
708 u8 *iv,
709 unsigned short op_type)
710{
711 int err;
712
713 SKCIPHER_REQUEST_ON_STACK(subreq, cipher);
714 skcipher_request_set_tfm(subreq, cipher);
715 skcipher_request_set_callback(subreq, flags, NULL, NULL);
716 skcipher_request_set_crypt(subreq, src, dst,
717 nbytes, iv);
718
719 err = op_type ? crypto_skcipher_decrypt(subreq) :
720 crypto_skcipher_encrypt(subreq);
721 skcipher_request_zero(subreq);
722
723 return err;
324429d7 724
b8fd1f41 725}
324429d7 726static inline void create_wreq(struct chcr_context *ctx,
358961d1 727 struct chcr_wr *chcr_req,
2f47d580
HJ		 728 struct crypto_async_request *req,
729 unsigned int imm,
570265bf 730 int hash_sz,
2f47d580 731 unsigned int len16,
2512a624
HJ		 732 unsigned int sc_len,
733 unsigned int lcb)
324429d7
HS		 734{
735 struct uld_ctx *u_ctx = ULD_CTX(ctx);
72a56ca9 736 int qid = u_ctx->lldi.rxq_ids[ctx->rx_qidx];
324429d7 737
324429d7 738
570265bf 739 chcr_req->wreq.op_to_cctx_size = FILL_WR_OP_CCTX_SIZE;
358961d1 740 chcr_req->wreq.pld_size_hash_size =
570265bf 741 htonl(FW_CRYPTO_LOOKASIDE_WR_HASH_SIZE_V(hash_sz));
358961d1 742 chcr_req->wreq.len16_pkd =
2f47d580 743 htonl(FW_CRYPTO_LOOKASIDE_WR_LEN16_V(DIV_ROUND_UP(len16, 16)));
358961d1
HJ		 744 chcr_req->wreq.cookie = cpu_to_be64((uintptr_t)req);
745 chcr_req->wreq.rx_chid_to_rx_q_id =
8a13449f 746 FILL_WR_RX_Q_ID(ctx->dev->rx_channel_id, qid,
570265bf 747 !!lcb, ctx->tx_qidx);
324429d7 748
8a13449f
HJ		 749 chcr_req->ulptx.cmd_dest = FILL_ULPTX_CMD_DEST(ctx->dev->tx_channel_id,
750 qid);
2f47d580
HJ		 751 chcr_req->ulptx.len = htonl((DIV_ROUND_UP(len16, 16) -
752 ((sizeof(chcr_req->wreq)) >> 4)));
324429d7 753
2f47d580 754 chcr_req->sc_imm.cmd_more = FILL_CMD_MORE(!imm);
358961d1 755 chcr_req->sc_imm.len = cpu_to_be32(sizeof(struct cpl_tx_sec_pdu) +
2f47d580 756 sizeof(chcr_req->key_ctx) + sc_len);
324429d7
HS		 757}
758
759/**
760 * create_cipher_wr - form the WR for cipher operations
761 * @req: cipher req.
762 * @ctx: crypto driver context of the request.
763 * @qid: ingress qid where response of this WR should be received.
764 * @op_type: encryption or decryption
765 */
b8fd1f41 766static struct sk_buff *create_cipher_wr(struct cipher_wr_param *wrparam)
324429d7 767{
b8fd1f41 768 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(wrparam->req);
2f47d580 769 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm));
324429d7 770 struct sk_buff *skb = NULL;
358961d1 771 struct chcr_wr *chcr_req;
324429d7 772 struct cpl_rx_phys_dsgl *phys_cpl;
2f47d580 773 struct ulptx_sgl *ulptx;
b8fd1f41
HJ		 774 struct chcr_blkcipher_req_ctx *reqctx =
775 ablkcipher_request_ctx(wrparam->req);
2f47d580 776 unsigned int temp = 0, transhdr_len, dst_size;
b8fd1f41 777 int error;
2956f36c 778 int nents;
2f47d580 779 unsigned int kctx_len;
b8fd1f41
HJ		 780 gfp_t flags = wrparam->req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ?
781 GFP_KERNEL : GFP_ATOMIC;
2f47d580 782 struct adapter *adap = padap(c_ctx(tfm)->dev);
324429d7 783
2f47d580
HJ		 784 nents = sg_nents_xlen(reqctx->dstsg, wrparam->bytes, CHCR_DST_SG_SIZE,
785 reqctx->dst_ofst);
786 dst_size = get_space_for_phys_dsgl(nents + 1);
125d01ca 787 kctx_len = roundup(ablkctx->enckey_len, 16);
2f47d580
HJ		 788 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
789 nents = sg_nents_xlen(reqctx->srcsg, wrparam->bytes,
790 CHCR_SRC_SG_SIZE, reqctx->src_ofst);
125d01ca
HJ		 791 temp = reqctx->imm ? roundup(IV + wrparam->req->nbytes, 16) :
792 (sgl_len(nents + MIN_CIPHER_SG) * 8);
2f47d580 793 transhdr_len += temp;
125d01ca 794 transhdr_len = roundup(transhdr_len, 16);
2f47d580 795 skb = alloc_skb(SGE_MAX_WR_LEN, flags);
b8fd1f41
HJ		 796 if (!skb) {
797 error = -ENOMEM;
798 goto err;
799 }
de77b966 800 chcr_req = __skb_put_zero(skb, transhdr_len);
358961d1 801 chcr_req->sec_cpl.op_ivinsrtofst =
2f47d580 802 FILL_SEC_CPL_OP_IVINSR(c_ctx(tfm)->dev->rx_channel_id, 2, 1);
358961d1 803
2f47d580 804 chcr_req->sec_cpl.pldlen = htonl(IV + wrparam->bytes);
358961d1 805 chcr_req->sec_cpl.aadstart_cipherstop_hi =
2f47d580 806 FILL_SEC_CPL_CIPHERSTOP_HI(0, 0, IV + 1, 0);
358961d1
HJ		 807
808 chcr_req->sec_cpl.cipherstop_lo_authinsert =
809 FILL_SEC_CPL_AUTHINSERT(0, 0, 0, 0);
b8fd1f41 810 chcr_req->sec_cpl.seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(reqctx->op, 0,
324429d7 811 ablkctx->ciph_mode,
2f47d580 812 0, 0, IV >> 1);
358961d1 813 chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 0,
2f47d580 814 0, 0, dst_size);
324429d7 815
358961d1 816 chcr_req->key_ctx.ctx_hdr = ablkctx->key_ctx_hdr;
b8fd1f41
HJ		 817 if ((reqctx->op == CHCR_DECRYPT_OP) &&
818 (!(get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) ==
819 CRYPTO_ALG_SUB_TYPE_CTR)) &&
820 (!(get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) ==
821 CRYPTO_ALG_SUB_TYPE_CTR_RFC3686))) {
358961d1 822 generate_copy_rrkey(ablkctx, &chcr_req->key_ctx);
324429d7 823 } else {
b8fd1f41
HJ		 824 if ((ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC) ||
825 (ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CTR)) {
358961d1
HJ		 826 memcpy(chcr_req->key_ctx.key, ablkctx->key,
827 ablkctx->enckey_len);
324429d7 828 } else {
358961d1 829 memcpy(chcr_req->key_ctx.key, ablkctx->key +
324429d7
HS		 830 (ablkctx->enckey_len >> 1),
831 ablkctx->enckey_len >> 1);
358961d1 832 memcpy(chcr_req->key_ctx.key +
324429d7
HS		 833 (ablkctx->enckey_len >> 1),
834 ablkctx->key,
835 ablkctx->enckey_len >> 1);
836 }
837 }
358961d1 838 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
2f47d580
HJ		 839 ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size);
840 chcr_add_cipher_src_ent(wrparam->req, ulptx, wrparam);
841 chcr_add_cipher_dst_ent(wrparam->req, phys_cpl, wrparam, wrparam->qid);
324429d7 842
ee0863ba 843 atomic_inc(&adap->chcr_stats.cipher_rqst);
2f47d580
HJ		 844 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + kctx_len
845 +(reqctx->imm ? (IV + wrparam->bytes) : 0);
846 create_wreq(c_ctx(tfm), chcr_req, &(wrparam->req->base), reqctx->imm, 0,
847 transhdr_len, temp,
2512a624 848 ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC);
5c86a8ff 849 reqctx->skb = skb;
324429d7 850 return skb;
b8fd1f41
HJ		 851err:
852 return ERR_PTR(error);
853}
854
855static inline int chcr_keyctx_ck_size(unsigned int keylen)
856{
857 int ck_size = 0;
858
859 if (keylen == AES_KEYSIZE_128)
860 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
861 else if (keylen == AES_KEYSIZE_192)
862 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
863 else if (keylen == AES_KEYSIZE_256)
864 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
865 else
866 ck_size = 0;
867
868 return ck_size;
869}
870static int chcr_cipher_fallback_setkey(struct crypto_ablkcipher *cipher,
871 const u8 *key,
872 unsigned int keylen)
873{
874 struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
2f47d580 875 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
b8fd1f41
HJ		 876 int err = 0;
877
878 crypto_skcipher_clear_flags(ablkctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
879 crypto_skcipher_set_flags(ablkctx->sw_cipher, cipher->base.crt_flags &
880 CRYPTO_TFM_REQ_MASK);
881 err = crypto_skcipher_setkey(ablkctx->sw_cipher, key, keylen);
882 tfm->crt_flags &= ~CRYPTO_TFM_RES_MASK;
883 tfm->crt_flags |=
884 crypto_skcipher_get_flags(ablkctx->sw_cipher) &
885 CRYPTO_TFM_RES_MASK;
886 return err;
324429d7
HS		 887}
888
b8fd1f41
HJ		 889static int chcr_aes_cbc_setkey(struct crypto_ablkcipher *cipher,
890 const u8 *key,
324429d7
HS		 891 unsigned int keylen)
892{
2f47d580 893 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
324429d7
HS		 894 unsigned int ck_size, context_size;
895 u16 alignment = 0;
b8fd1f41 896 int err;
324429d7 897
b8fd1f41
HJ		 898 err = chcr_cipher_fallback_setkey(cipher, key, keylen);
899 if (err)
324429d7 900 goto badkey_err;
b8fd1f41
HJ		 901
902 ck_size = chcr_keyctx_ck_size(keylen);
903 alignment = ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192 ? 8 : 0;
cc1b156d
HJ		 904 memcpy(ablkctx->key, key, keylen);
905 ablkctx->enckey_len = keylen;
906 get_aes_decrypt_key(ablkctx->rrkey, ablkctx->key, keylen << 3);
324429d7
HS		 907 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD +
908 keylen + alignment) >> 4;
909
910 ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY,
911 0, 0, context_size);
912 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CBC;
913 return 0;
914badkey_err:
b8fd1f41 915 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
324429d7 916 ablkctx->enckey_len = 0;
b8fd1f41
HJ		 917
918 return err;
324429d7
HS		 919}
920
b8fd1f41
HJ		 921static int chcr_aes_ctr_setkey(struct crypto_ablkcipher *cipher,
922 const u8 *key,
923 unsigned int keylen)
324429d7 924{
2f47d580 925 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
b8fd1f41
HJ		 926 unsigned int ck_size, context_size;
927 u16 alignment = 0;
928 int err;
929
930 err = chcr_cipher_fallback_setkey(cipher, key, keylen);
931 if (err)
932 goto badkey_err;
933 ck_size = chcr_keyctx_ck_size(keylen);
934 alignment = (ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192) ? 8 : 0;
935 memcpy(ablkctx->key, key, keylen);
936 ablkctx->enckey_len = keylen;
937 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD +
938 keylen + alignment) >> 4;
939
940 ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY,
941 0, 0, context_size);
942 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CTR;
943
944 return 0;
945badkey_err:
946 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
947 ablkctx->enckey_len = 0;
948
949 return err;
950}
951
952static int chcr_aes_rfc3686_setkey(struct crypto_ablkcipher *cipher,
953 const u8 *key,
954 unsigned int keylen)
955{
2f47d580 956 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
b8fd1f41
HJ		 957 unsigned int ck_size, context_size;
958 u16 alignment = 0;
959 int err;
960
961 if (keylen < CTR_RFC3686_NONCE_SIZE)
962 return -EINVAL;
963 memcpy(ablkctx->nonce, key + (keylen - CTR_RFC3686_NONCE_SIZE),
964 CTR_RFC3686_NONCE_SIZE);
965
966 keylen -= CTR_RFC3686_NONCE_SIZE;
967 err = chcr_cipher_fallback_setkey(cipher, key, keylen);
968 if (err)
969 goto badkey_err;
970
971 ck_size = chcr_keyctx_ck_size(keylen);
972 alignment = (ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192) ? 8 : 0;
973 memcpy(ablkctx->key, key, keylen);
974 ablkctx->enckey_len = keylen;
975 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD +
976 keylen + alignment) >> 4;
977
978 ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY,
979 0, 0, context_size);
980 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CTR;
981
982 return 0;
983badkey_err:
984 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
985 ablkctx->enckey_len = 0;
986
987 return err;
988}
989static void ctr_add_iv(u8 *dstiv, u8 *srciv, u32 add)
990{
991 unsigned int size = AES_BLOCK_SIZE;
992 __be32 *b = (__be32 *)(dstiv + size);
993 u32 c, prev;
994
995 memcpy(dstiv, srciv, AES_BLOCK_SIZE);
996 for (; size >= 4; size -= 4) {
997 prev = be32_to_cpu(*--b);
998 c = prev + add;
999 *b = cpu_to_be32(c);
1000 if (prev < c)
1001 break;
1002 add = 1;
1003 }
1004
1005}
1006
1007static unsigned int adjust_ctr_overflow(u8 *iv, u32 bytes)
1008{
1009 __be32 *b = (__be32 *)(iv + AES_BLOCK_SIZE);
1010 u64 c;
1011 u32 temp = be32_to_cpu(*--b);
1012
1013 temp = ~temp;
1014 c = (u64)temp + 1; // No of block can processed withou overflow
1015 if ((bytes / AES_BLOCK_SIZE) > c)
1016 bytes = c * AES_BLOCK_SIZE;
1017 return bytes;
1018}
1019
209897d5
HJ		 1020static int chcr_update_tweak(struct ablkcipher_request *req, u8 *iv,
1021 u32 isfinal)
b8fd1f41
HJ		 1022{
1023 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
2f47d580 1024 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm));
b8fd1f41
HJ		 1025 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
1026 struct crypto_cipher *cipher;
1027 int ret, i;
1028 u8 *key;
1029 unsigned int keylen;
de1a00ac
HJ		 1030 int round = reqctx->last_req_len / AES_BLOCK_SIZE;
1031 int round8 = round / 8;
b8fd1f41 1032
d3f1d2f7 1033 cipher = ablkctx->aes_generic;
de1a00ac 1034 memcpy(iv, reqctx->iv, AES_BLOCK_SIZE);
b8fd1f41 1035
b8fd1f41
HJ		 1036 keylen = ablkctx->enckey_len / 2;
1037 key = ablkctx->key + keylen;
1038 ret = crypto_cipher_setkey(cipher, key, keylen);
1039 if (ret)
d3f1d2f7 1040 goto out;
2f47d580 1041 /*H/W sends the encrypted IV in dsgl when AADIVDROP bit is 0*/
de1a00ac
HJ		 1042 for (i = 0; i < round8; i++)
1043 gf128mul_x8_ble((le128 *)iv, (le128 *)iv);
1044
1045 for (i = 0; i < (round % 8); i++)
b8fd1f41
HJ		 1046 gf128mul_x_ble((le128 *)iv, (le128 *)iv);
1047
209897d5
HJ		 1048 if (!isfinal)
1049 crypto_cipher_decrypt_one(cipher, iv, iv);
b8fd1f41
HJ		 1050out:
1051 return ret;
1052}
1053
1054static int chcr_update_cipher_iv(struct ablkcipher_request *req,
1055 struct cpl_fw6_pld *fw6_pld, u8 *iv)
1056{
1057 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
1058 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
1059 int subtype = get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm));
ab677ff4 1060 int ret = 0;
324429d7 1061
b8fd1f41
HJ		 1062 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR)
1063 ctr_add_iv(iv, req->info, (reqctx->processed /
1064 AES_BLOCK_SIZE));
1065 else if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_RFC3686)
1066 *(__be32 *)(reqctx->iv + CTR_RFC3686_NONCE_SIZE +
1067 CTR_RFC3686_IV_SIZE) = cpu_to_be32((reqctx->processed /
1068 AES_BLOCK_SIZE) + 1);
1069 else if (subtype == CRYPTO_ALG_SUB_TYPE_XTS)
209897d5 1070 ret = chcr_update_tweak(req, iv, 0);
b8fd1f41
HJ		 1071 else if (subtype == CRYPTO_ALG_SUB_TYPE_CBC) {
1072 if (reqctx->op)
1073 sg_pcopy_to_buffer(req->src, sg_nents(req->src), iv,
1074 16,
1075 reqctx->processed - AES_BLOCK_SIZE);
1076 else
1077 memcpy(iv, &fw6_pld->data[2], AES_BLOCK_SIZE);
1078 }
1079
324429d7 1080 return ret;
b8fd1f41 1081
324429d7
HS		 1082}
1083
b8fd1f41
HJ		 1084/* We need separate function for final iv because in rfc3686 Initial counter
1085 * starts from 1 and buffer size of iv is 8 byte only which remains constant
1086 * for subsequent update requests
1087 */
1088
1089static int chcr_final_cipher_iv(struct ablkcipher_request *req,
1090 struct cpl_fw6_pld *fw6_pld, u8 *iv)
1091{
1092 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
1093 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
1094 int subtype = get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm));
1095 int ret = 0;
1096
1097 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR)
1098 ctr_add_iv(iv, req->info, (reqctx->processed /
1099 AES_BLOCK_SIZE));
1100 else if (subtype == CRYPTO_ALG_SUB_TYPE_XTS)
209897d5 1101 ret = chcr_update_tweak(req, iv, 1);
b8fd1f41
HJ		 1102 else if (subtype == CRYPTO_ALG_SUB_TYPE_CBC) {
1103 if (reqctx->op)
1104 sg_pcopy_to_buffer(req->src, sg_nents(req->src), iv,
1105 16,
1106 reqctx->processed - AES_BLOCK_SIZE);
1107 else
1108 memcpy(iv, &fw6_pld->data[2], AES_BLOCK_SIZE);
1109
1110 }
1111 return ret;
1112
1113}
1114
b8fd1f41
HJ		 1115static int chcr_handle_cipher_resp(struct ablkcipher_request *req,
1116 unsigned char *input, int err)
324429d7
HS		 1117{
1118 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
2f47d580
HJ		 1119 struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm));
1120 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm));
324429d7 1121 struct sk_buff *skb;
b8fd1f41
HJ		 1122 struct cpl_fw6_pld *fw6_pld = (struct cpl_fw6_pld *)input;
1123 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
1124 struct cipher_wr_param wrparam;
1125 int bytes;
1126
b8fd1f41 1127 if (err)
2f47d580 1128 goto unmap;
b8fd1f41 1129 if (req->nbytes == reqctx->processed) {
2f47d580
HJ		 1130 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev,
1131 req);
b8fd1f41
HJ		 1132 err = chcr_final_cipher_iv(req, fw6_pld, req->info);
1133 goto complete;
1134 }
1135
1136 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
2f47d580 1137 c_ctx(tfm)->tx_qidx))) {
b8fd1f41
HJ		 1138 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) {
1139 err = -EBUSY;
2f47d580 1140 goto unmap;
b8fd1f41
HJ		 1141 }
1142
1143 }
2f47d580
HJ		 1144 if (!reqctx->imm) {
1145 bytes = chcr_sg_ent_in_wr(reqctx->srcsg, reqctx->dstsg, 1,
1146 SPACE_LEFT(ablkctx->enckey_len),
1147 reqctx->src_ofst, reqctx->dst_ofst);
db6deea4
HJ		 1148 if ((bytes + reqctx->processed) >= req->nbytes)
1149 bytes = req->nbytes - reqctx->processed;
1150 else
125d01ca 1151 bytes = rounddown(bytes, 16);
2f47d580
HJ		 1152 } else {
1153 /*CTR mode counter overfloa*/
1154 bytes = req->nbytes - reqctx->processed;
1155 }
1156 dma_sync_single_for_cpu(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev,
1157 reqctx->iv_dma, IV, DMA_BIDIRECTIONAL);
b8fd1f41 1158 err = chcr_update_cipher_iv(req, fw6_pld, reqctx->iv);
2f47d580
HJ		 1159 dma_sync_single_for_device(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev,
1160 reqctx->iv_dma, IV, DMA_BIDIRECTIONAL);
b8fd1f41 1161 if (err)
2f47d580 1162 goto unmap;
b8fd1f41
HJ		 1163
1164 if (unlikely(bytes == 0)) {
2f47d580
HJ		 1165 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev,
1166 req);
b8fd1f41
HJ		 1167 err = chcr_cipher_fallback(ablkctx->sw_cipher,
1168 req->base.flags,
2f47d580
HJ		 1169 req->src,
1170 req->dst,
1171 req->nbytes,
1172 req->info,
b8fd1f41
HJ		 1173 reqctx->op);
1174 goto complete;
1175 }
1176
1177 if (get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) ==
1178 CRYPTO_ALG_SUB_TYPE_CTR)
1179 bytes = adjust_ctr_overflow(reqctx->iv, bytes);
2f47d580 1180 wrparam.qid = u_ctx->lldi.rxq_ids[c_ctx(tfm)->rx_qidx];
b8fd1f41
HJ		 1181 wrparam.req = req;
1182 wrparam.bytes = bytes;
1183 skb = create_cipher_wr(&wrparam);
1184 if (IS_ERR(skb)) {
1185 pr_err("chcr : %s : Failed to form WR. No memory\n", __func__);
1186 err = PTR_ERR(skb);
2f47d580 1187 goto unmap;
b8fd1f41
HJ		 1188 }
1189 skb->dev = u_ctx->lldi.ports[0];
2f47d580 1190 set_wr_txq(skb, CPL_PRIORITY_DATA, c_ctx(tfm)->tx_qidx);
b8fd1f41 1191 chcr_send_wr(skb);
2f47d580
HJ		 1192 reqctx->last_req_len = bytes;
1193 reqctx->processed += bytes;
b8fd1f41 1194 return 0;
2f47d580
HJ		 1195unmap:
1196 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req);
b8fd1f41
HJ		 1197complete:
1198 req->base.complete(&req->base, err);
1199 return err;
1200}
1201
1202static int process_cipher(struct ablkcipher_request *req,
1203 unsigned short qid,
1204 struct sk_buff **skb,
1205 unsigned short op_type)
1206{
1207 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
1208 unsigned int ivsize = crypto_ablkcipher_ivsize(tfm);
1209 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
2f47d580 1210 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm));
b8fd1f41 1211 struct cipher_wr_param wrparam;
2956f36c 1212 int bytes, err = -EINVAL;
b8fd1f41 1213
b8fd1f41
HJ		 1214 reqctx->processed = 0;
1215 if (!req->info)
1216 goto error;
1217 if ((ablkctx->enckey_len == 0) || (ivsize > AES_BLOCK_SIZE) ||
1218 (req->nbytes == 0) ||
1219 (req->nbytes % crypto_ablkcipher_blocksize(tfm))) {
1220 pr_err("AES: Invalid value of Key Len %d nbytes %d IV Len %d\n",
1221 ablkctx->enckey_len, req->nbytes, ivsize);
1222 goto error;
1223 }
2f47d580
HJ		 1224 chcr_cipher_dma_map(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req);
1225 if (req->nbytes < (SGE_MAX_WR_LEN - (sizeof(struct chcr_wr) +
1226 AES_MIN_KEY_SIZE +
1227 sizeof(struct cpl_rx_phys_dsgl) +
1228 /*Min dsgl size*/
1229 32))) {
1230 /* Can be sent as Imm*/
1231 unsigned int dnents = 0, transhdr_len, phys_dsgl, kctx_len;
1232
1233 dnents = sg_nents_xlen(req->dst, req->nbytes,
1234 CHCR_DST_SG_SIZE, 0);
1235 dnents += 1; // IV
1236 phys_dsgl = get_space_for_phys_dsgl(dnents);
125d01ca 1237 kctx_len = roundup(ablkctx->enckey_len, 16);
2f47d580
HJ		 1238 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, phys_dsgl);
1239 reqctx->imm = (transhdr_len + IV + req->nbytes) <=
1240 SGE_MAX_WR_LEN;
1241 bytes = IV + req->nbytes;
1242
1243 } else {
1244 reqctx->imm = 0;
1245 }
1246
1247 if (!reqctx->imm) {
1248 bytes = chcr_sg_ent_in_wr(req->src, req->dst,
1249 MIN_CIPHER_SG,
1250 SPACE_LEFT(ablkctx->enckey_len),
1251 0, 0);
db6deea4
HJ		 1252 if ((bytes + reqctx->processed) >= req->nbytes)
1253 bytes = req->nbytes - reqctx->processed;
1254 else
125d01ca 1255 bytes = rounddown(bytes, 16);
2f47d580 1256 } else {
b8fd1f41 1257 bytes = req->nbytes;
2f47d580 1258 }
b8fd1f41 1259 if (get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) ==
db6deea4 1260 CRYPTO_ALG_SUB_TYPE_CTR) {
b8fd1f41
HJ		 1261 bytes = adjust_ctr_overflow(req->info, bytes);
1262 }
1263 if (get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) ==
1264 CRYPTO_ALG_SUB_TYPE_CTR_RFC3686) {
1265 memcpy(reqctx->iv, ablkctx->nonce, CTR_RFC3686_NONCE_SIZE);
1266 memcpy(reqctx->iv + CTR_RFC3686_NONCE_SIZE, req->info,
1267 CTR_RFC3686_IV_SIZE);
1268
1269 /* initialize counter portion of counter block */
1270 *(__be32 *)(reqctx->iv + CTR_RFC3686_NONCE_SIZE +
1271 CTR_RFC3686_IV_SIZE) = cpu_to_be32(1);
1272
1273 } else {
1274
2f47d580 1275 memcpy(reqctx->iv, req->info, IV);
b8fd1f41
HJ		 1276 }
1277 if (unlikely(bytes == 0)) {
2f47d580
HJ		 1278 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev,
1279 req);
b8fd1f41
HJ		 1280 err = chcr_cipher_fallback(ablkctx->sw_cipher,
1281 req->base.flags,
1282 req->src,
1283 req->dst,
1284 req->nbytes,
1285 req->info,
1286 op_type);
1287 goto error;
1288 }
b8fd1f41 1289 reqctx->op = op_type;
2f47d580
HJ		 1290 reqctx->srcsg = req->src;
1291 reqctx->dstsg = req->dst;
1292 reqctx->src_ofst = 0;
1293 reqctx->dst_ofst = 0;
b8fd1f41
HJ		 1294 wrparam.qid = qid;
1295 wrparam.req = req;
1296 wrparam.bytes = bytes;
1297 *skb = create_cipher_wr(&wrparam);
1298 if (IS_ERR(*skb)) {
1299 err = PTR_ERR(*skb);
2f47d580 1300 goto unmap;
b8fd1f41 1301 }
2f47d580
HJ		 1302 reqctx->processed = bytes;
1303 reqctx->last_req_len = bytes;
b8fd1f41
HJ		 1304
1305 return 0;
2f47d580
HJ		 1306unmap:
1307 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req);
b8fd1f41
HJ		 1308error:
1309 return err;
1310}
1311
1312static int chcr_aes_encrypt(struct ablkcipher_request *req)
1313{
1314 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
b8fd1f41
HJ		 1315 struct sk_buff *skb = NULL;
1316 int err;
2f47d580 1317 struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm));
324429d7
HS		 1318
1319 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
2f47d580 1320 c_ctx(tfm)->tx_qidx))) {
324429d7
HS		 1321 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
1322 return -EBUSY;
1323 }
1324
2f47d580
HJ		 1325 err = process_cipher(req, u_ctx->lldi.rxq_ids[c_ctx(tfm)->rx_qidx],
1326 &skb, CHCR_ENCRYPT_OP);
b8fd1f41
HJ		 1327 if (err || !skb)
1328 return err;
324429d7 1329 skb->dev = u_ctx->lldi.ports[0];
2f47d580 1330 set_wr_txq(skb, CPL_PRIORITY_DATA, c_ctx(tfm)->tx_qidx);
324429d7
HS		 1331 chcr_send_wr(skb);
1332 return -EINPROGRESS;
1333}
1334
1335static int chcr_aes_decrypt(struct ablkcipher_request *req)
1336{
1337 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
2f47d580 1338 struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm));
b8fd1f41
HJ		 1339 struct sk_buff *skb = NULL;
1340 int err;
324429d7
HS		 1341
1342 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
2f47d580 1343 c_ctx(tfm)->tx_qidx))) {
324429d7
HS		 1344 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
1345 return -EBUSY;
1346 }
1347
2f47d580
HJ		 1348 err = process_cipher(req, u_ctx->lldi.rxq_ids[c_ctx(tfm)->rx_qidx],
1349 &skb, CHCR_DECRYPT_OP);
b8fd1f41
HJ		 1350 if (err || !skb)
1351 return err;
324429d7 1352 skb->dev = u_ctx->lldi.ports[0];
2f47d580 1353 set_wr_txq(skb, CPL_PRIORITY_DATA, c_ctx(tfm)->tx_qidx);
324429d7
HS		 1354 chcr_send_wr(skb);
1355 return -EINPROGRESS;
1356}
1357
1358static int chcr_device_init(struct chcr_context *ctx)
1359{
14c19b17 1360 struct uld_ctx *u_ctx = NULL;
72a56ca9 1361 struct adapter *adap;
324429d7 1362 unsigned int id;
72a56ca9 1363 int txq_perchan, txq_idx, ntxq;
324429d7
HS		 1364 int err = 0, rxq_perchan, rxq_idx;
1365
1366 id = smp_processor_id();
1367 if (!ctx->dev) {
14c19b17
HJ		 1368 u_ctx = assign_chcr_device();
1369 if (!u_ctx) {
324429d7
HS		 1370 pr_err("chcr device assignment fails\n");
1371 goto out;
1372 }
14c19b17 1373 ctx->dev = u_ctx->dev;
72a56ca9
HJ		 1374 adap = padap(ctx->dev);
1375 ntxq = min_not_zero((unsigned int)u_ctx->lldi.nrxq,
1376 adap->vres.ncrypto_fc);
324429d7 1377 rxq_perchan = u_ctx->lldi.nrxq / u_ctx->lldi.nchan;
72a56ca9 1378 txq_perchan = ntxq / u_ctx->lldi.nchan;
324429d7
HS		 1379 rxq_idx = ctx->dev->tx_channel_id * rxq_perchan;
1380 rxq_idx += id % rxq_perchan;
72a56ca9
HJ		 1381 txq_idx = ctx->dev->tx_channel_id * txq_perchan;
1382 txq_idx += id % txq_perchan;
324429d7 1383 spin_lock(&ctx->dev->lock_chcr_dev);
72a56ca9
HJ		 1384 ctx->rx_qidx = rxq_idx;
1385 ctx->tx_qidx = txq_idx;
ab677ff4 1386 ctx->dev->tx_channel_id = !ctx->dev->tx_channel_id;
8a13449f 1387 ctx->dev->rx_channel_id = 0;
324429d7
HS		 1388 spin_unlock(&ctx->dev->lock_chcr_dev);
1389 }
1390out:
1391 return err;
1392}
1393
1394static int chcr_cra_init(struct crypto_tfm *tfm)
1395{
b8fd1f41
HJ		 1396 struct crypto_alg *alg = tfm->__crt_alg;
1397 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
1398 struct ablk_ctx *ablkctx = ABLK_CTX(ctx);
1399
1400 ablkctx->sw_cipher = crypto_alloc_skcipher(alg->cra_name, 0,
1401 CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK);
1402 if (IS_ERR(ablkctx->sw_cipher)) {
1403 pr_err("failed to allocate fallback for %s\n", alg->cra_name);
1404 return PTR_ERR(ablkctx->sw_cipher);
1405 }
d3f1d2f7
HJ		 1406
1407 if (get_cryptoalg_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_XTS) {
1408 /* To update tweak*/
1409 ablkctx->aes_generic = crypto_alloc_cipher("aes-generic", 0, 0);
1410 if (IS_ERR(ablkctx->aes_generic)) {
1411 pr_err("failed to allocate aes cipher for tweak\n");
1412 return PTR_ERR(ablkctx->aes_generic);
1413 }
1414 } else
1415 ablkctx->aes_generic = NULL;
1416
324429d7
HS		 1417 tfm->crt_ablkcipher.reqsize = sizeof(struct chcr_blkcipher_req_ctx);
1418 return chcr_device_init(crypto_tfm_ctx(tfm));
1419}
1420
b8fd1f41
HJ		 1421static int chcr_rfc3686_init(struct crypto_tfm *tfm)
1422{
1423 struct crypto_alg *alg = tfm->__crt_alg;
1424 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
1425 struct ablk_ctx *ablkctx = ABLK_CTX(ctx);
1426
1427 /*RFC3686 initialises IV counter value to 1, rfc3686(ctr(aes))
1428 * cannot be used as fallback in chcr_handle_cipher_response
1429 */
1430 ablkctx->sw_cipher = crypto_alloc_skcipher("ctr(aes)", 0,
1431 CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK);
1432 if (IS_ERR(ablkctx->sw_cipher)) {
1433 pr_err("failed to allocate fallback for %s\n", alg->cra_name);
1434 return PTR_ERR(ablkctx->sw_cipher);
1435 }
1436 tfm->crt_ablkcipher.reqsize = sizeof(struct chcr_blkcipher_req_ctx);
1437 return chcr_device_init(crypto_tfm_ctx(tfm));
1438}
1439
1440
1441static void chcr_cra_exit(struct crypto_tfm *tfm)
1442{
1443 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
1444 struct ablk_ctx *ablkctx = ABLK_CTX(ctx);
1445
1446 crypto_free_skcipher(ablkctx->sw_cipher);
d3f1d2f7
HJ		 1447 if (ablkctx->aes_generic)
1448 crypto_free_cipher(ablkctx->aes_generic);
b8fd1f41
HJ		 1449}
1450
324429d7
HS		 1451static int get_alg_config(struct algo_param *params,
1452 unsigned int auth_size)
1453{
1454 switch (auth_size) {
1455 case SHA1_DIGEST_SIZE:
1456 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_160;
1457 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA1;
1458 params->result_size = SHA1_DIGEST_SIZE;
1459 break;
1460 case SHA224_DIGEST_SIZE:
1461 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256;
1462 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA224;
1463 params->result_size = SHA256_DIGEST_SIZE;
1464 break;
1465 case SHA256_DIGEST_SIZE:
1466 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256;
1467 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA256;
1468 params->result_size = SHA256_DIGEST_SIZE;
1469 break;
1470 case SHA384_DIGEST_SIZE:
1471 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_512;
1472 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA512_384;
1473 params->result_size = SHA512_DIGEST_SIZE;
1474 break;
1475 case SHA512_DIGEST_SIZE:
1476 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_512;
1477 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA512_512;
1478 params->result_size = SHA512_DIGEST_SIZE;
1479 break;
1480 default:
1481 pr_err("chcr : ERROR, unsupported digest size\n");
1482 return -EINVAL;
1483 }
1484 return 0;
1485}
1486
e7922729 1487static inline void chcr_free_shash(struct crypto_shash *base_hash)
324429d7 1488{
e7922729 1489 crypto_free_shash(base_hash);
324429d7
HS		 1490}
1491
1492/**
358961d1 1493 * create_hash_wr - Create hash work request
324429d7
HS		 1494 * @req - Cipher req base
1495 */
358961d1 1496static struct sk_buff *create_hash_wr(struct ahash_request *req,
2debd332 1497 struct hash_wr_param *param)
324429d7
HS		 1498{
1499 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1500 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
2f47d580 1501 struct hmac_ctx *hmacctx = HMAC_CTX(h_ctx(tfm));
324429d7 1502 struct sk_buff *skb = NULL;
2f47d580 1503 struct uld_ctx *u_ctx = ULD_CTX(h_ctx(tfm));
358961d1 1504 struct chcr_wr *chcr_req;
2f47d580
HJ		 1505 struct ulptx_sgl *ulptx;
1506 unsigned int nents = 0, transhdr_len, iopad_alignment = 0;
324429d7 1507 unsigned int digestsize = crypto_ahash_digestsize(tfm);
2f47d580 1508 unsigned int kctx_len = 0, temp = 0;
324429d7 1509 u8 hash_size_in_response = 0;
358961d1
HJ		 1510 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
1511 GFP_ATOMIC;
2f47d580
HJ		 1512 struct adapter *adap = padap(h_ctx(tfm)->dev);
1513 int error = 0;
324429d7
HS		 1514
1515 iopad_alignment = KEYCTX_ALIGN_PAD(digestsize);
358961d1 1516 kctx_len = param->alg_prm.result_size + iopad_alignment;
324429d7
HS		 1517 if (param->opad_needed)
1518 kctx_len += param->alg_prm.result_size + iopad_alignment;
1519
1520 if (req_ctx->result)
1521 hash_size_in_response = digestsize;
1522 else
1523 hash_size_in_response = param->alg_prm.result_size;
1524 transhdr_len = HASH_TRANSHDR_SIZE(kctx_len);
2f47d580
HJ		 1525 req_ctx->imm = (transhdr_len + param->bfr_len + param->sg_len) <=
1526 SGE_MAX_WR_LEN;
1527 nents = sg_nents_xlen(req->src, param->sg_len, CHCR_SRC_SG_SIZE, 0);
1528 nents += param->bfr_len ? 1 : 0;
125d01ca
HJ		 1529 transhdr_len += req_ctx->imm ? roundup((param->bfr_len +
1530 param->sg_len), 16) :
2f47d580 1531 (sgl_len(nents) * 8);
125d01ca 1532 transhdr_len = roundup(transhdr_len, 16);
2f47d580
HJ		 1533
1534 skb = alloc_skb(SGE_MAX_WR_LEN, flags);
324429d7 1535 if (!skb)
2f47d580 1536 return ERR_PTR(-ENOMEM);
de77b966 1537 chcr_req = __skb_put_zero(skb, transhdr_len);
324429d7 1538
358961d1 1539 chcr_req->sec_cpl.op_ivinsrtofst =
2f47d580 1540 FILL_SEC_CPL_OP_IVINSR(h_ctx(tfm)->dev->rx_channel_id, 2, 0);
358961d1 1541 chcr_req->sec_cpl.pldlen = htonl(param->bfr_len + param->sg_len);
324429d7 1542
358961d1 1543 chcr_req->sec_cpl.aadstart_cipherstop_hi =
324429d7 1544 FILL_SEC_CPL_CIPHERSTOP_HI(0, 0, 0, 0);
358961d1 1545 chcr_req->sec_cpl.cipherstop_lo_authinsert =
324429d7 1546 FILL_SEC_CPL_AUTHINSERT(0, 1, 0, 0);
358961d1 1547 chcr_req->sec_cpl.seqno_numivs =
324429d7 1548 FILL_SEC_CPL_SCMD0_SEQNO(0, 0, 0, param->alg_prm.auth_mode,
358961d1 1549 param->opad_needed, 0);
324429d7 1550
358961d1 1551 chcr_req->sec_cpl.ivgen_hdrlen =
324429d7
HS		 1552 FILL_SEC_CPL_IVGEN_HDRLEN(param->last, param->more, 0, 1, 0, 0);
1553
358961d1
HJ		 1554 memcpy(chcr_req->key_ctx.key, req_ctx->partial_hash,
1555 param->alg_prm.result_size);
324429d7
HS		 1556
1557 if (param->opad_needed)
358961d1
HJ		 1558 memcpy(chcr_req->key_ctx.key +
1559 ((param->alg_prm.result_size <= 32) ? 32 :
1560 CHCR_HASH_MAX_DIGEST_SIZE),
324429d7
HS		 1561 hmacctx->opad, param->alg_prm.result_size);
1562
358961d1 1563 chcr_req->key_ctx.ctx_hdr = FILL_KEY_CTX_HDR(CHCR_KEYCTX_NO_KEY,
324429d7
HS		 1564 param->alg_prm.mk_size, 0,
1565 param->opad_needed,
358961d1
HJ		 1566 ((kctx_len +
1567 sizeof(chcr_req->key_ctx)) >> 4));
1568 chcr_req->sec_cpl.scmd1 = cpu_to_be64((u64)param->scmd1);
2f47d580
HJ		 1569 ulptx = (struct ulptx_sgl *)((u8 *)(chcr_req + 1) + kctx_len +
1570 DUMMY_BYTES);
1571 if (param->bfr_len != 0) {
1572 req_ctx->dma_addr = dma_map_single(&u_ctx->lldi.pdev->dev,
1573 req_ctx->reqbfr, param->bfr_len,
1574 DMA_TO_DEVICE);
1575 if (dma_mapping_error(&u_ctx->lldi.pdev->dev,
1576 req_ctx->dma_addr)) {
1577 error = -ENOMEM;
1578 goto err;
1579 }
1580 req_ctx->dma_len = param->bfr_len;
1581 } else {
1582 req_ctx->dma_addr = 0;
1583 }
1584 chcr_add_hash_src_ent(req, ulptx, param);
1585 /* Request upto max wr size */
1586 temp = kctx_len + DUMMY_BYTES + (req_ctx->imm ? (param->sg_len
1587 + param->bfr_len) : 0);
ee0863ba 1588 atomic_inc(&adap->chcr_stats.digest_rqst);
2f47d580
HJ		 1589 create_wreq(h_ctx(tfm), chcr_req, &req->base, req_ctx->imm,
1590 hash_size_in_response, transhdr_len,
1591 temp, 0);
324429d7 1592 req_ctx->skb = skb;
324429d7 1593 return skb;
2f47d580
HJ		 1594err:
1595 kfree_skb(skb);
1596 return ERR_PTR(error);
324429d7
HS		 1597}
1598
1599static int chcr_ahash_update(struct ahash_request *req)
1600{
1601 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1602 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
324429d7
HS		 1603 struct uld_ctx *u_ctx = NULL;
1604 struct sk_buff *skb;
1605 u8 remainder = 0, bs;
1606 unsigned int nbytes = req->nbytes;
1607 struct hash_wr_param params;
2f47d580 1608 int error;
324429d7
HS		 1609
1610 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1611
2f47d580 1612 u_ctx = ULD_CTX(h_ctx(rtfm));
324429d7 1613 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
2f47d580 1614 h_ctx(rtfm)->tx_qidx))) {
324429d7
HS		 1615 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
1616 return -EBUSY;
1617 }
1618
44fce12a
HJ		 1619 if (nbytes + req_ctx->reqlen >= bs) {
1620 remainder = (nbytes + req_ctx->reqlen) % bs;
1621 nbytes = nbytes + req_ctx->reqlen - remainder;
324429d7 1622 } else {
44fce12a
HJ		 1623 sg_pcopy_to_buffer(req->src, sg_nents(req->src), req_ctx->reqbfr
1624 + req_ctx->reqlen, nbytes, 0);
1625 req_ctx->reqlen += nbytes;
324429d7
HS		 1626 return 0;
1627 }
2f47d580
HJ		 1628 error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req);
1629 if (error)
1630 return -ENOMEM;
324429d7
HS		 1631 params.opad_needed = 0;
1632 params.more = 1;
1633 params.last = 0;
44fce12a
HJ		 1634 params.sg_len = nbytes - req_ctx->reqlen;
1635 params.bfr_len = req_ctx->reqlen;
324429d7
HS		 1636 params.scmd1 = 0;
1637 get_alg_config(&params.alg_prm, crypto_ahash_digestsize(rtfm));
1638 req_ctx->result = 0;
1639 req_ctx->data_len += params.sg_len + params.bfr_len;
358961d1 1640 skb = create_hash_wr(req, &params);
2f47d580
HJ		 1641 if (IS_ERR(skb)) {
1642 error = PTR_ERR(skb);
1643 goto unmap;
1644 }
324429d7 1645
44fce12a 1646 if (remainder) {
44fce12a 1647 /* Swap buffers */
abfa2b37 1648 swap(req_ctx->reqbfr, req_ctx->skbfr);
324429d7 1649 sg_pcopy_to_buffer(req->src, sg_nents(req->src),
44fce12a 1650 req_ctx->reqbfr, remainder, req->nbytes -
324429d7 1651 remainder);
44fce12a
HJ		 1652 }
1653 req_ctx->reqlen = remainder;
324429d7 1654 skb->dev = u_ctx->lldi.ports[0];
2f47d580 1655 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx);
324429d7
HS		 1656 chcr_send_wr(skb);
1657
1658 return -EINPROGRESS;
2f47d580
HJ		 1659unmap:
1660 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
1661 return error;
324429d7
HS		 1662}
1663
1664static void create_last_hash_block(char *bfr_ptr, unsigned int bs, u64 scmd1)
1665{
1666 memset(bfr_ptr, 0, bs);
1667 *bfr_ptr = 0x80;
1668 if (bs == 64)
1669 *(__be64 *)(bfr_ptr + 56) = cpu_to_be64(scmd1 << 3);
1670 else
1671 *(__be64 *)(bfr_ptr + 120) = cpu_to_be64(scmd1 << 3);
1672}
1673
1674static int chcr_ahash_final(struct ahash_request *req)
1675{
1676 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1677 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
324429d7
HS		 1678 struct hash_wr_param params;
1679 struct sk_buff *skb;
1680 struct uld_ctx *u_ctx = NULL;
1681 u8 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1682
2f47d580 1683 u_ctx = ULD_CTX(h_ctx(rtfm));
324429d7
HS		 1684 if (is_hmac(crypto_ahash_tfm(rtfm)))
1685 params.opad_needed = 1;
1686 else
1687 params.opad_needed = 0;
1688 params.sg_len = 0;
1689 get_alg_config(&params.alg_prm, crypto_ahash_digestsize(rtfm));
1690 req_ctx->result = 1;
44fce12a 1691 params.bfr_len = req_ctx->reqlen;
324429d7 1692 req_ctx->data_len += params.bfr_len + params.sg_len;
44fce12a
HJ		 1693 if (req_ctx->reqlen == 0) {
1694 create_last_hash_block(req_ctx->reqbfr, bs, req_ctx->data_len);
324429d7
HS		 1695 params.last = 0;
1696 params.more = 1;
1697 params.scmd1 = 0;
1698 params.bfr_len = bs;
1699
1700 } else {
1701 params.scmd1 = req_ctx->data_len;
1702 params.last = 1;
1703 params.more = 0;
1704 }
358961d1 1705 skb = create_hash_wr(req, &params);
40cdbe1a
YG		 1706 if (IS_ERR(skb))
1707 return PTR_ERR(skb);
358961d1 1708
324429d7 1709 skb->dev = u_ctx->lldi.ports[0];
2f47d580 1710 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx);
324429d7
HS		 1711 chcr_send_wr(skb);
1712 return -EINPROGRESS;
1713}
1714
1715static int chcr_ahash_finup(struct ahash_request *req)
1716{
1717 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1718 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
324429d7
HS		 1719 struct uld_ctx *u_ctx = NULL;
1720 struct sk_buff *skb;
1721 struct hash_wr_param params;
1722 u8 bs;
2f47d580 1723 int error;
324429d7
HS		 1724
1725 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
2f47d580 1726 u_ctx = ULD_CTX(h_ctx(rtfm));
324429d7
HS		 1727
1728 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
2f47d580 1729 h_ctx(rtfm)->tx_qidx))) {
324429d7
HS		 1730 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
1731 return -EBUSY;
1732 }
1733
1734 if (is_hmac(crypto_ahash_tfm(rtfm)))
1735 params.opad_needed = 1;
1736 else
1737 params.opad_needed = 0;
1738
1739 params.sg_len = req->nbytes;
44fce12a 1740 params.bfr_len = req_ctx->reqlen;
324429d7
HS		 1741 get_alg_config(&params.alg_prm, crypto_ahash_digestsize(rtfm));
1742 req_ctx->data_len += params.bfr_len + params.sg_len;
1743 req_ctx->result = 1;
44fce12a
HJ		 1744 if ((req_ctx->reqlen + req->nbytes) == 0) {
1745 create_last_hash_block(req_ctx->reqbfr, bs, req_ctx->data_len);
324429d7
HS		 1746 params.last = 0;
1747 params.more = 1;
1748 params.scmd1 = 0;
1749 params.bfr_len = bs;
1750 } else {
1751 params.scmd1 = req_ctx->data_len;
1752 params.last = 1;
1753 params.more = 0;
1754 }
2f47d580
HJ		 1755 error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req);
1756 if (error)
1757 return -ENOMEM;
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 }
324429d7 1764 skb->dev = u_ctx->lldi.ports[0];
2f47d580 1765 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx);
324429d7
HS		 1766 chcr_send_wr(skb);
1767
1768 return -EINPROGRESS;
2f47d580
HJ		 1769unmap:
1770 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
1771 return error;
324429d7
HS		 1772}
1773
1774static int chcr_ahash_digest(struct ahash_request *req)
1775{
1776 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1777 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
324429d7
HS		 1778 struct uld_ctx *u_ctx = NULL;
1779 struct sk_buff *skb;
1780 struct hash_wr_param params;
1781 u8 bs;
2f47d580 1782 int error;
324429d7
HS		 1783
1784 rtfm->init(req);
1785 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1786
2f47d580 1787 u_ctx = ULD_CTX(h_ctx(rtfm));
324429d7 1788 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
2f47d580 1789 h_ctx(rtfm)->tx_qidx))) {
324429d7
HS		 1790 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
1791 return -EBUSY;
1792 }
1793
1794 if (is_hmac(crypto_ahash_tfm(rtfm)))
1795 params.opad_needed = 1;
1796 else
1797 params.opad_needed = 0;
2f47d580
HJ		 1798 error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req);
1799 if (error)
1800 return -ENOMEM;
324429d7
HS		 1801
1802 params.last = 0;
1803 params.more = 0;
1804 params.sg_len = req->nbytes;
1805 params.bfr_len = 0;
1806 params.scmd1 = 0;
1807 get_alg_config(&params.alg_prm, crypto_ahash_digestsize(rtfm));
1808 req_ctx->result = 1;
1809 req_ctx->data_len += params.bfr_len + params.sg_len;
1810
44fce12a
HJ		 1811 if (req->nbytes == 0) {
1812 create_last_hash_block(req_ctx->reqbfr, bs, 0);
324429d7
HS		 1813 params.more = 1;
1814 params.bfr_len = bs;
1815 }
1816
358961d1 1817 skb = create_hash_wr(req, &params);
2f47d580
HJ		 1818 if (IS_ERR(skb)) {
1819 error = PTR_ERR(skb);
1820 goto unmap;
1821 }
324429d7 1822 skb->dev = u_ctx->lldi.ports[0];
2f47d580 1823 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx);
324429d7
HS		 1824 chcr_send_wr(skb);
1825 return -EINPROGRESS;
2f47d580
HJ		 1826unmap:
1827 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
1828 return error;
324429d7
HS		 1829}
1830
1831static int chcr_ahash_export(struct ahash_request *areq, void *out)
1832{
1833 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
1834 struct chcr_ahash_req_ctx *state = out;
1835
44fce12a 1836 state->reqlen = req_ctx->reqlen;
324429d7 1837 state->data_len = req_ctx->data_len;
2f47d580
HJ		 1838 state->is_sg_map = 0;
1839 state->result = 0;
44fce12a 1840 memcpy(state->bfr1, req_ctx->reqbfr, req_ctx->reqlen);
324429d7
HS		 1841 memcpy(state->partial_hash, req_ctx->partial_hash,
1842 CHCR_HASH_MAX_DIGEST_SIZE);
44fce12a 1843 return 0;
324429d7
HS		 1844}
1845
1846static int chcr_ahash_import(struct ahash_request *areq, const void *in)
1847{
1848 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
1849 struct chcr_ahash_req_ctx *state = (struct chcr_ahash_req_ctx *)in;
1850
44fce12a 1851 req_ctx->reqlen = state->reqlen;
324429d7 1852 req_ctx->data_len = state->data_len;
44fce12a
HJ		 1853 req_ctx->reqbfr = req_ctx->bfr1;
1854 req_ctx->skbfr = req_ctx->bfr2;
2f47d580
HJ		 1855 req_ctx->is_sg_map = 0;
1856 req_ctx->result = 0;
44fce12a 1857 memcpy(req_ctx->bfr1, state->bfr1, CHCR_HASH_MAX_BLOCK_SIZE_128);
324429d7
HS		 1858 memcpy(req_ctx->partial_hash, state->partial_hash,
1859 CHCR_HASH_MAX_DIGEST_SIZE);
1860 return 0;
1861}
1862
1863static int chcr_ahash_setkey(struct crypto_ahash *tfm, const u8 *key,
1864 unsigned int keylen)
1865{
2f47d580 1866 struct hmac_ctx *hmacctx = HMAC_CTX(h_ctx(tfm));
324429d7
HS		 1867 unsigned int digestsize = crypto_ahash_digestsize(tfm);
1868 unsigned int bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm));
1869 unsigned int i, err = 0, updated_digestsize;
1870
e7922729
HJ		 1871 SHASH_DESC_ON_STACK(shash, hmacctx->base_hash);
1872
1873 /* use the key to calculate the ipad and opad. ipad will sent with the
324429d7
HS		 1874 * first request's data. opad will be sent with the final hash result
1875 * ipad in hmacctx->ipad and opad in hmacctx->opad location
1876 */
e7922729
HJ		 1877 shash->tfm = hmacctx->base_hash;
1878 shash->flags = crypto_shash_get_flags(hmacctx->base_hash);
324429d7 1879 if (keylen > bs) {
e7922729 1880 err = crypto_shash_digest(shash, key, keylen,
324429d7
HS		 1881 hmacctx->ipad);
1882 if (err)
1883 goto out;
1884 keylen = digestsize;
1885 } else {
1886 memcpy(hmacctx->ipad, key, keylen);
1887 }
1888 memset(hmacctx->ipad + keylen, 0, bs - keylen);
1889 memcpy(hmacctx->opad, hmacctx->ipad, bs);
1890
1891 for (i = 0; i < bs / sizeof(int); i++) {
1892 *((unsigned int *)(&hmacctx->ipad) + i) ^= IPAD_DATA;
1893 *((unsigned int *)(&hmacctx->opad) + i) ^= OPAD_DATA;
1894 }
1895
1896 updated_digestsize = digestsize;
1897 if (digestsize == SHA224_DIGEST_SIZE)
1898 updated_digestsize = SHA256_DIGEST_SIZE;
1899 else if (digestsize == SHA384_DIGEST_SIZE)
1900 updated_digestsize = SHA512_DIGEST_SIZE;
e7922729 1901 err = chcr_compute_partial_hash(shash, hmacctx->ipad,
324429d7
HS		 1902 hmacctx->ipad, digestsize);
1903 if (err)
1904 goto out;
1905 chcr_change_order(hmacctx->ipad, updated_digestsize);
1906
e7922729 1907 err = chcr_compute_partial_hash(shash, hmacctx->opad,
324429d7
HS		 1908 hmacctx->opad, digestsize);
1909 if (err)
1910 goto out;
1911 chcr_change_order(hmacctx->opad, updated_digestsize);
1912out:
1913 return err;
1914}
1915
b8fd1f41 1916static int chcr_aes_xts_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
324429d7
HS		 1917 unsigned int key_len)
1918{
2f47d580 1919 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
324429d7 1920 unsigned short context_size = 0;
b8fd1f41 1921 int err;
324429d7 1922
b8fd1f41
HJ		 1923 err = chcr_cipher_fallback_setkey(cipher, key, key_len);
1924 if (err)
1925 goto badkey_err;
cc1b156d
HJ		 1926
1927 memcpy(ablkctx->key, key, key_len);
1928 ablkctx->enckey_len = key_len;
1929 get_aes_decrypt_key(ablkctx->rrkey, ablkctx->key, key_len << 2);
1930 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD + key_len) >> 4;
1931 ablkctx->key_ctx_hdr =
1932 FILL_KEY_CTX_HDR((key_len == AES_KEYSIZE_256) ?
1933 CHCR_KEYCTX_CIPHER_KEY_SIZE_128 :
1934 CHCR_KEYCTX_CIPHER_KEY_SIZE_256,
1935 CHCR_KEYCTX_NO_KEY, 1,
1936 0, context_size);
1937 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_XTS;
1938 return 0;
b8fd1f41
HJ		 1939badkey_err:
1940 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
1941 ablkctx->enckey_len = 0;
1942
1943 return err;
324429d7
HS		 1944}
1945
1946static int chcr_sha_init(struct ahash_request *areq)
1947{
1948 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
1949 struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
1950 int digestsize = crypto_ahash_digestsize(tfm);
1951
1952 req_ctx->data_len = 0;
44fce12a
HJ		 1953 req_ctx->reqlen = 0;
1954 req_ctx->reqbfr = req_ctx->bfr1;
1955 req_ctx->skbfr = req_ctx->bfr2;
324429d7
HS		 1956 req_ctx->skb = NULL;
1957 req_ctx->result = 0;
2f47d580 1958 req_ctx->is_sg_map = 0;
324429d7
HS		 1959 copy_hash_init_values(req_ctx->partial_hash, digestsize);
1960 return 0;
1961}
1962
1963static int chcr_sha_cra_init(struct crypto_tfm *tfm)
1964{
1965 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
1966 sizeof(struct chcr_ahash_req_ctx));
1967 return chcr_device_init(crypto_tfm_ctx(tfm));
1968}
1969
1970static int chcr_hmac_init(struct ahash_request *areq)
1971{
1972 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
1973 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(areq);
2f47d580 1974 struct hmac_ctx *hmacctx = HMAC_CTX(h_ctx(rtfm));
324429d7
HS		 1975 unsigned int digestsize = crypto_ahash_digestsize(rtfm);
1976 unsigned int bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1977
1978 chcr_sha_init(areq);
1979 req_ctx->data_len = bs;
1980 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1981 if (digestsize == SHA224_DIGEST_SIZE)
1982 memcpy(req_ctx->partial_hash, hmacctx->ipad,
1983 SHA256_DIGEST_SIZE);
1984 else if (digestsize == SHA384_DIGEST_SIZE)
1985 memcpy(req_ctx->partial_hash, hmacctx->ipad,
1986 SHA512_DIGEST_SIZE);
1987 else
1988 memcpy(req_ctx->partial_hash, hmacctx->ipad,
1989 digestsize);
1990 }
1991 return 0;
1992}
1993
1994static int chcr_hmac_cra_init(struct crypto_tfm *tfm)
1995{
1996 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
1997 struct hmac_ctx *hmacctx = HMAC_CTX(ctx);
1998 unsigned int digestsize =
1999 crypto_ahash_digestsize(__crypto_ahash_cast(tfm));
2000
2001 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
2002 sizeof(struct chcr_ahash_req_ctx));
e7922729
HJ		 2003 hmacctx->base_hash = chcr_alloc_shash(digestsize);
2004 if (IS_ERR(hmacctx->base_hash))
2005 return PTR_ERR(hmacctx->base_hash);
324429d7
HS		 2006 return chcr_device_init(crypto_tfm_ctx(tfm));
2007}
2008
324429d7
HS		 2009static void chcr_hmac_cra_exit(struct crypto_tfm *tfm)
2010{
2011 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
2012 struct hmac_ctx *hmacctx = HMAC_CTX(ctx);
2013
e7922729
HJ		 2014 if (hmacctx->base_hash) {
2015 chcr_free_shash(hmacctx->base_hash);
2016 hmacctx->base_hash = NULL;
324429d7
HS		 2017 }
2018}
2019
2f47d580
HJ		 2020static int chcr_aead_common_init(struct aead_request *req,
2021 unsigned short op_type)
2debd332 2022{
2f47d580
HJ		 2023 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2024 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2025 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2026 int error = -EINVAL;
2f47d580 2027 unsigned int authsize = crypto_aead_authsize(tfm);
2debd332 2028
2f47d580
HJ		 2029 /* validate key size */
2030 if (aeadctx->enckey_len == 0)
2031 goto err;
2032 if (op_type && req->cryptlen < authsize)
2033 goto err;
2034 error = chcr_aead_dma_map(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev, req,
2035 op_type);
2036 if (error) {
2037 error = -ENOMEM;
2038 goto err;
2039 }
2040 reqctx->aad_nents = sg_nents_xlen(req->src, req->assoclen,
2041 CHCR_SRC_SG_SIZE, 0);
2042 reqctx->src_nents = sg_nents_xlen(req->src, req->cryptlen,
2043 CHCR_SRC_SG_SIZE, req->assoclen);
2044 return 0;
2045err:
2046 return error;
2debd332 2047}
2f47d580
HJ		 2048
2049static int chcr_aead_need_fallback(struct aead_request *req, int dst_nents,
0e93708d
HJ		 2050 int aadmax, int wrlen,
2051 unsigned short op_type)
2052{
2053 unsigned int authsize = crypto_aead_authsize(crypto_aead_reqtfm(req));
2054
2055 if (((req->cryptlen - (op_type ? authsize : 0)) == 0) ||
2f47d580 2056 dst_nents > MAX_DSGL_ENT ||
0e93708d 2057 (req->assoclen > aadmax) ||
2f47d580 2058 (wrlen > SGE_MAX_WR_LEN))
0e93708d
HJ		 2059 return 1;
2060 return 0;
2061}
2debd332 2062
0e93708d
HJ		 2063static int chcr_aead_fallback(struct aead_request *req, unsigned short op_type)
2064{
2065 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2f47d580 2066 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
0e93708d
HJ		 2067 struct aead_request *subreq = aead_request_ctx(req);
2068
2069 aead_request_set_tfm(subreq, aeadctx->sw_cipher);
2070 aead_request_set_callback(subreq, req->base.flags,
2071 req->base.complete, req->base.data);
2072 aead_request_set_crypt(subreq, req->src, req->dst, req->cryptlen,
2073 req->iv);
2074 aead_request_set_ad(subreq, req->assoclen);
2075 return op_type ? crypto_aead_decrypt(subreq) :
2076 crypto_aead_encrypt(subreq);
2077}
2debd332
HJ		 2078
2079static struct sk_buff *create_authenc_wr(struct aead_request *req,
2080 unsigned short qid,
2081 int size,
2082 unsigned short op_type)
2083{
2084 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2f47d580 2085 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2debd332
HJ		 2086 struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx);
2087 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2088 struct sk_buff *skb = NULL;
2089 struct chcr_wr *chcr_req;
2090 struct cpl_rx_phys_dsgl *phys_cpl;
2f47d580
HJ		 2091 struct ulptx_sgl *ulptx;
2092 unsigned int transhdr_len;
3d64bd67 2093 unsigned int dst_size = 0, temp, subtype = get_aead_subtype(tfm);
2f47d580 2094 unsigned int kctx_len = 0, dnents;
2debd332
HJ		 2095 unsigned int assoclen = req->assoclen;
2096 unsigned int authsize = crypto_aead_authsize(tfm);
2f47d580 2097 int error = -EINVAL;
2debd332
HJ		 2098 int null = 0;
2099 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
2100 GFP_ATOMIC;
2f47d580 2101 struct adapter *adap = padap(a_ctx(tfm)->dev);
2debd332 2102
2f47d580
HJ		 2103 if (req->cryptlen == 0)
2104 return NULL;
2debd332 2105
2f47d580 2106 reqctx->b0_dma = 0;
3d64bd67
HJ		 2107 if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL ||
2108 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
2debd332
HJ		 2109 null = 1;
2110 assoclen = 0;
2111 }
2f47d580
HJ		 2112 error = chcr_aead_common_init(req, op_type);
2113 if (error)
2114 return ERR_PTR(error);
5abc8db0
HJ		 2115 dnents = sg_nents_xlen(req->dst, assoclen, CHCR_DST_SG_SIZE, 0);
2116 dnents += sg_nents_xlen(req->dst, req->cryptlen +
2117 (op_type ? -authsize : authsize), CHCR_DST_SG_SIZE,
2118 req->assoclen);
2119 dnents += MIN_AUTH_SG; // For IV
2f47d580
HJ		 2120
2121 dst_size = get_space_for_phys_dsgl(dnents);
2debd332
HJ		 2122 kctx_len = (ntohl(KEY_CONTEXT_CTX_LEN_V(aeadctx->key_ctx_hdr)) << 4)
2123 - sizeof(chcr_req->key_ctx);
2124 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
2f47d580
HJ		 2125 reqctx->imm = (transhdr_len + assoclen + IV + req->cryptlen) <
2126 SGE_MAX_WR_LEN;
125d01ca
HJ		 2127 temp = reqctx->imm ? roundup(assoclen + IV + req->cryptlen, 16)
2128 : (sgl_len(reqctx->src_nents + reqctx->aad_nents
2f47d580
HJ		 2129 + MIN_GCM_SG) * 8);
2130 transhdr_len += temp;
125d01ca 2131 transhdr_len = roundup(transhdr_len, 16);
2f47d580
HJ		 2132
2133 if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE,
2134 transhdr_len, op_type)) {
ee0863ba 2135 atomic_inc(&adap->chcr_stats.fallback);
2f47d580
HJ		 2136 chcr_aead_dma_unmap(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev, req,
2137 op_type);
0e93708d
HJ		 2138 return ERR_PTR(chcr_aead_fallback(req, op_type));
2139 }
2f47d580 2140 skb = alloc_skb(SGE_MAX_WR_LEN, flags);
5fe8c711
HJ		 2141 if (!skb) {
2142 error = -ENOMEM;
2debd332 2143 goto err;
5fe8c711 2144 }
2debd332 2145
de77b966 2146 chcr_req = __skb_put_zero(skb, transhdr_len);
2debd332 2147
2f47d580 2148 temp = (op_type == CHCR_ENCRYPT_OP) ? 0 : authsize;
2debd332
HJ		 2149
2150 /*
2151 * Input order is AAD,IV and Payload. where IV should be included as
2152 * the part of authdata. All other fields should be filled according
2153 * to the hardware spec
2154 */
2155 chcr_req->sec_cpl.op_ivinsrtofst =
2f47d580
HJ		 2156 FILL_SEC_CPL_OP_IVINSR(a_ctx(tfm)->dev->rx_channel_id, 2,
2157 assoclen + 1);
2158 chcr_req->sec_cpl.pldlen = htonl(assoclen + IV + req->cryptlen);
2debd332
HJ		 2159 chcr_req->sec_cpl.aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI(
2160 assoclen ? 1 : 0, assoclen,
2f47d580
HJ		 2161 assoclen + IV + 1,
2162 (temp & 0x1F0) >> 4);
2debd332 2163 chcr_req->sec_cpl.cipherstop_lo_authinsert = FILL_SEC_CPL_AUTHINSERT(
2f47d580
HJ		 2164 temp & 0xF,
2165 null ? 0 : assoclen + IV + 1,
2166 temp, temp);
3d64bd67
HJ		 2167 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL ||
2168 subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA)
2169 temp = CHCR_SCMD_CIPHER_MODE_AES_CTR;
2170 else
2171 temp = CHCR_SCMD_CIPHER_MODE_AES_CBC;
2debd332
HJ		 2172 chcr_req->sec_cpl.seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(op_type,
2173 (op_type == CHCR_ENCRYPT_OP) ? 1 : 0,
3d64bd67 2174 temp,
2debd332 2175 actx->auth_mode, aeadctx->hmac_ctrl,
2f47d580 2176 IV >> 1);
2debd332 2177 chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1,
2f47d580 2178 0, 0, dst_size);
2debd332
HJ		 2179
2180 chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr;
3d64bd67
HJ		 2181 if (op_type == CHCR_ENCRYPT_OP ||
2182 subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
2183 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL)
2debd332
HJ		 2184 memcpy(chcr_req->key_ctx.key, aeadctx->key,
2185 aeadctx->enckey_len);
2186 else
2187 memcpy(chcr_req->key_ctx.key, actx->dec_rrkey,
2188 aeadctx->enckey_len);
2189
125d01ca
HJ		 2190 memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16),
2191 actx->h_iopad, kctx_len - roundup(aeadctx->enckey_len, 16));
3d64bd67
HJ		 2192 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
2193 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
2194 memcpy(reqctx->iv, aeadctx->nonce, CTR_RFC3686_NONCE_SIZE);
2195 memcpy(reqctx->iv + CTR_RFC3686_NONCE_SIZE, req->iv,
2196 CTR_RFC3686_IV_SIZE);
2197 *(__be32 *)(reqctx->iv + CTR_RFC3686_NONCE_SIZE +
2198 CTR_RFC3686_IV_SIZE) = cpu_to_be32(1);
2199 } else {
2200 memcpy(reqctx->iv, req->iv, IV);
2201 }
2debd332 2202 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
2f47d580
HJ		 2203 ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size);
2204 chcr_add_aead_dst_ent(req, phys_cpl, assoclen, op_type, qid);
2205 chcr_add_aead_src_ent(req, ulptx, assoclen, op_type);
ee0863ba 2206 atomic_inc(&adap->chcr_stats.cipher_rqst);
2f47d580
HJ		 2207 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size +
2208 kctx_len + (reqctx->imm ? (assoclen + IV + req->cryptlen) : 0);
2209 create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, size,
2210 transhdr_len, temp, 0);
2debd332 2211 reqctx->skb = skb;
2f47d580 2212 reqctx->op = op_type;
2debd332
HJ		 2213
2214 return skb;
2debd332 2215err:
2f47d580
HJ		 2216 chcr_aead_dma_unmap(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev, req,
2217 op_type);
2218
5fe8c711 2219 return ERR_PTR(error);
2debd332
HJ		 2220}
2221
6dad4e8a
AG		 2222int chcr_aead_dma_map(struct device *dev,
2223 struct aead_request *req,
2224 unsigned short op_type)
2f47d580
HJ		 2225{
2226 int error;
2227 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2228 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2229 unsigned int authsize = crypto_aead_authsize(tfm);
2230 int dst_size;
2231
2232 dst_size = req->assoclen + req->cryptlen + (op_type ?
2233 -authsize : authsize);
2234 if (!req->cryptlen || !dst_size)
2235 return 0;
2236 reqctx->iv_dma = dma_map_single(dev, reqctx->iv, IV,
2237 DMA_BIDIRECTIONAL);
2238 if (dma_mapping_error(dev, reqctx->iv_dma))
2239 return -ENOMEM;
2240
2241 if (req->src == req->dst) {
2242 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2243 DMA_BIDIRECTIONAL);
2244 if (!error)
2245 goto err;
2246 } else {
2247 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2248 DMA_TO_DEVICE);
2249 if (!error)
2250 goto err;
2251 error = dma_map_sg(dev, req->dst, sg_nents(req->dst),
2252 DMA_FROM_DEVICE);
2253 if (!error) {
2254 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2255 DMA_TO_DEVICE);
2256 goto err;
2257 }
2258 }
2259
2260 return 0;
2261err:
2262 dma_unmap_single(dev, reqctx->iv_dma, IV, DMA_BIDIRECTIONAL);
2263 return -ENOMEM;
2264}
2265
6dad4e8a
AG		 2266void chcr_aead_dma_unmap(struct device *dev,
2267 struct aead_request *req,
2268 unsigned short op_type)
2f47d580
HJ		 2269{
2270 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2271 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2272 unsigned int authsize = crypto_aead_authsize(tfm);
2273 int dst_size;
2274
2275 dst_size = req->assoclen + req->cryptlen + (op_type ?
2276 -authsize : authsize);
2277 if (!req->cryptlen || !dst_size)
2278 return;
2279
2280 dma_unmap_single(dev, reqctx->iv_dma, IV,
2281 DMA_BIDIRECTIONAL);
2282 if (req->src == req->dst) {
2283 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2284 DMA_BIDIRECTIONAL);
2285 } else {
2286 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2287 DMA_TO_DEVICE);
2288 dma_unmap_sg(dev, req->dst, sg_nents(req->dst),
2289 DMA_FROM_DEVICE);
2290 }
2291}
2292
6dad4e8a
AG		 2293void chcr_add_aead_src_ent(struct aead_request *req,
2294 struct ulptx_sgl *ulptx,
2295 unsigned int assoclen,
2296 unsigned short op_type)
2f47d580
HJ		 2297{
2298 struct ulptx_walk ulp_walk;
2299 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2300
2301 if (reqctx->imm) {
2302 u8 *buf = (u8 *)ulptx;
2303
2304 if (reqctx->b0_dma) {
2305 memcpy(buf, reqctx->scratch_pad, reqctx->b0_len);
2306 buf += reqctx->b0_len;
2307 }
2308 sg_pcopy_to_buffer(req->src, sg_nents(req->src),
2309 buf, assoclen, 0);
2310 buf += assoclen;
2311 memcpy(buf, reqctx->iv, IV);
2312 buf += IV;
2313 sg_pcopy_to_buffer(req->src, sg_nents(req->src),
2314 buf, req->cryptlen, req->assoclen);
2315 } else {
2316 ulptx_walk_init(&ulp_walk, ulptx);
2317 if (reqctx->b0_dma)
2318 ulptx_walk_add_page(&ulp_walk, reqctx->b0_len,
2319 &reqctx->b0_dma);
2320 ulptx_walk_add_sg(&ulp_walk, req->src, assoclen, 0);
2321 ulptx_walk_add_page(&ulp_walk, IV, &reqctx->iv_dma);
2322 ulptx_walk_add_sg(&ulp_walk, req->src, req->cryptlen,
2323 req->assoclen);
2324 ulptx_walk_end(&ulp_walk);
2325 }
2326}
2327
6dad4e8a
AG		 2328void chcr_add_aead_dst_ent(struct aead_request *req,
2329 struct cpl_rx_phys_dsgl *phys_cpl,
2330 unsigned int assoclen,
2331 unsigned short op_type,
2332 unsigned short qid)
2f47d580
HJ		 2333{
2334 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2335 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2336 struct dsgl_walk dsgl_walk;
2337 unsigned int authsize = crypto_aead_authsize(tfm);
2338 u32 temp;
2339
2340 dsgl_walk_init(&dsgl_walk, phys_cpl);
2341 if (reqctx->b0_dma)
2342 dsgl_walk_add_page(&dsgl_walk, reqctx->b0_len, &reqctx->b0_dma);
2343 dsgl_walk_add_sg(&dsgl_walk, req->dst, assoclen, 0);
2344 dsgl_walk_add_page(&dsgl_walk, IV, &reqctx->iv_dma);
2345 temp = req->cryptlen + (op_type ? -authsize : authsize);
2346 dsgl_walk_add_sg(&dsgl_walk, req->dst, temp, req->assoclen);
2347 dsgl_walk_end(&dsgl_walk, qid);
2348}
2349
6dad4e8a
AG		 2350void chcr_add_cipher_src_ent(struct ablkcipher_request *req,
2351 struct ulptx_sgl *ulptx,
2352 struct cipher_wr_param *wrparam)
2f47d580
HJ		 2353{
2354 struct ulptx_walk ulp_walk;
2355 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
2356
2357 if (reqctx->imm) {
2358 u8 *buf = (u8 *)ulptx;
2359
2360 memcpy(buf, reqctx->iv, IV);
2361 buf += IV;
2362 sg_pcopy_to_buffer(req->src, sg_nents(req->src),
2363 buf, wrparam->bytes, reqctx->processed);
2364 } else {
2365 ulptx_walk_init(&ulp_walk, ulptx);
2366 ulptx_walk_add_page(&ulp_walk, IV, &reqctx->iv_dma);
2367 ulptx_walk_add_sg(&ulp_walk, reqctx->srcsg, wrparam->bytes,
2368 reqctx->src_ofst);
2369 reqctx->srcsg = ulp_walk.last_sg;
2370 reqctx->src_ofst = ulp_walk.last_sg_len;
2371 ulptx_walk_end(&ulp_walk);
2372 }
2373}
2374
6dad4e8a
AG		 2375void chcr_add_cipher_dst_ent(struct ablkcipher_request *req,
2376 struct cpl_rx_phys_dsgl *phys_cpl,
2377 struct cipher_wr_param *wrparam,
2378 unsigned short qid)
2f47d580
HJ		 2379{
2380 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
2381 struct dsgl_walk dsgl_walk;
2382
2383 dsgl_walk_init(&dsgl_walk, phys_cpl);
2384 dsgl_walk_add_page(&dsgl_walk, IV, &reqctx->iv_dma);
2385 dsgl_walk_add_sg(&dsgl_walk, reqctx->dstsg, wrparam->bytes,
2386 reqctx->dst_ofst);
2387 reqctx->dstsg = dsgl_walk.last_sg;
2388 reqctx->dst_ofst = dsgl_walk.last_sg_len;
2389
2390 dsgl_walk_end(&dsgl_walk, qid);
2391}
2392
6dad4e8a
AG		 2393void chcr_add_hash_src_ent(struct ahash_request *req,
2394 struct ulptx_sgl *ulptx,
2395 struct hash_wr_param *param)
2f47d580
HJ		 2396{
2397 struct ulptx_walk ulp_walk;
2398 struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req);
2399
2400 if (reqctx->imm) {
2401 u8 *buf = (u8 *)ulptx;
2402
2403 if (param->bfr_len) {
2404 memcpy(buf, reqctx->reqbfr, param->bfr_len);
2405 buf += param->bfr_len;
2406 }
2407 sg_pcopy_to_buffer(req->src, sg_nents(req->src),
2408 buf, param->sg_len, 0);
2409 } else {
2410 ulptx_walk_init(&ulp_walk, ulptx);
2411 if (param->bfr_len)
2412 ulptx_walk_add_page(&ulp_walk, param->bfr_len,
2413 &reqctx->dma_addr);
2414 ulptx_walk_add_sg(&ulp_walk, req->src, param->sg_len,
db6deea4
HJ		 2415 0);
2416 ulptx_walk_end(&ulp_walk);
2f47d580
HJ		 2417 }
2418}
2419
6dad4e8a
AG		 2420int chcr_hash_dma_map(struct device *dev,
2421 struct ahash_request *req)
2f47d580
HJ		 2422{
2423 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
2424 int error = 0;
2425
2426 if (!req->nbytes)
2427 return 0;
2428 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2429 DMA_TO_DEVICE);
2430 if (!error)
7814f552 2431 return -ENOMEM;
2f47d580
HJ		 2432 req_ctx->is_sg_map = 1;
2433 return 0;
2434}
2435
6dad4e8a
AG		 2436void chcr_hash_dma_unmap(struct device *dev,
2437 struct ahash_request *req)
2f47d580
HJ		 2438{
2439 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
2440
2441 if (!req->nbytes)
2442 return;
2443
2444 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2445 DMA_TO_DEVICE);
2446 req_ctx->is_sg_map = 0;
2447
2448}
2449
6dad4e8a
AG		 2450int chcr_cipher_dma_map(struct device *dev,
2451 struct ablkcipher_request *req)
2f47d580
HJ		 2452{
2453 int error;
2454 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
2455
2456 reqctx->iv_dma = dma_map_single(dev, reqctx->iv, IV,
2457 DMA_BIDIRECTIONAL);
2458 if (dma_mapping_error(dev, reqctx->iv_dma))
2459 return -ENOMEM;
2460
2461 if (req->src == req->dst) {
2462 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2463 DMA_BIDIRECTIONAL);
2464 if (!error)
2465 goto err;
2466 } else {
2467 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2468 DMA_TO_DEVICE);
2469 if (!error)
2470 goto err;
2471 error = dma_map_sg(dev, req->dst, sg_nents(req->dst),
2472 DMA_FROM_DEVICE);
2473 if (!error) {
2474 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2475 DMA_TO_DEVICE);
2476 goto err;
2477 }
2478 }
2479
2480 return 0;
2481err:
2482 dma_unmap_single(dev, reqctx->iv_dma, IV, DMA_BIDIRECTIONAL);
2483 return -ENOMEM;
2484}
6dad4e8a
AG		 2485
2486void chcr_cipher_dma_unmap(struct device *dev,
2487 struct ablkcipher_request *req)
2f47d580
HJ		 2488{
2489 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
2490
2491 dma_unmap_single(dev, reqctx->iv_dma, IV,
2492 DMA_BIDIRECTIONAL);
2493 if (req->src == req->dst) {
2494 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2495 DMA_BIDIRECTIONAL);
2496 } else {
2497 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2498 DMA_TO_DEVICE);
2499 dma_unmap_sg(dev, req->dst, sg_nents(req->dst),
2500 DMA_FROM_DEVICE);
2501 }
2502}
2503
2debd332
HJ		 2504static int set_msg_len(u8 *block, unsigned int msglen, int csize)
2505{
2506 __be32 data;
2507
2508 memset(block, 0, csize);
2509 block += csize;
2510
2511 if (csize >= 4)
2512 csize = 4;
2513 else if (msglen > (unsigned int)(1 << (8 * csize)))
2514 return -EOVERFLOW;
2515
2516 data = cpu_to_be32(msglen);
2517 memcpy(block - csize, (u8 *)&data + 4 - csize, csize);
2518
2519 return 0;
2520}
2521
2522static void generate_b0(struct aead_request *req,
2523 struct chcr_aead_ctx *aeadctx,
2524 unsigned short op_type)
2525{
2526 unsigned int l, lp, m;
2527 int rc;
2528 struct crypto_aead *aead = crypto_aead_reqtfm(req);
2529 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2530 u8 *b0 = reqctx->scratch_pad;
2531
2532 m = crypto_aead_authsize(aead);
2533
2534 memcpy(b0, reqctx->iv, 16);
2535
2536 lp = b0[0];
2537 l = lp + 1;
2538
2539 /* set m, bits 3-5 */
2540 *b0 |= (8 * ((m - 2) / 2));
2541
2542 /* set adata, bit 6, if associated data is used */
2543 if (req->assoclen)
2544 *b0 |= 64;
2545 rc = set_msg_len(b0 + 16 - l,
2546 (op_type == CHCR_DECRYPT_OP) ?
2547 req->cryptlen - m : req->cryptlen, l);
2548}
2549
2550static inline int crypto_ccm_check_iv(const u8 *iv)
2551{
2552 /* 2 <= L <= 8, so 1 <= L' <= 7. */
2553 if (iv[0] < 1 || iv[0] > 7)
2554 return -EINVAL;
2555
2556 return 0;
2557}
2558
2559static int ccm_format_packet(struct aead_request *req,
2560 struct chcr_aead_ctx *aeadctx,
2561 unsigned int sub_type,
2562 unsigned short op_type)
2563{
2564 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2565 int rc = 0;
2566
2debd332
HJ		 2567 if (sub_type == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) {
2568 reqctx->iv[0] = 3;
2569 memcpy(reqctx->iv + 1, &aeadctx->salt[0], 3);
2570 memcpy(reqctx->iv + 4, req->iv, 8);
2571 memset(reqctx->iv + 12, 0, 4);
2572 *((unsigned short *)(reqctx->scratch_pad + 16)) =
2573 htons(req->assoclen - 8);
2574 } else {
2575 memcpy(reqctx->iv, req->iv, 16);
2576 *((unsigned short *)(reqctx->scratch_pad + 16)) =
2577 htons(req->assoclen);
2578 }
2579 generate_b0(req, aeadctx, op_type);
2580 /* zero the ctr value */
2581 memset(reqctx->iv + 15 - reqctx->iv[0], 0, reqctx->iv[0] + 1);
2582 return rc;
2583}
2584
2585static void fill_sec_cpl_for_aead(struct cpl_tx_sec_pdu *sec_cpl,
2586 unsigned int dst_size,
2587 struct aead_request *req,
2f47d580 2588 unsigned short op_type)
2debd332
HJ		 2589{
2590 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2f47d580 2591 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2debd332
HJ		 2592 unsigned int cipher_mode = CHCR_SCMD_CIPHER_MODE_AES_CCM;
2593 unsigned int mac_mode = CHCR_SCMD_AUTH_MODE_CBCMAC;
2f47d580 2594 unsigned int c_id = a_ctx(tfm)->dev->rx_channel_id;
2debd332
HJ		 2595 unsigned int ccm_xtra;
2596 unsigned char tag_offset = 0, auth_offset = 0;
2debd332
HJ		 2597 unsigned int assoclen;
2598
2599 if (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309)
2600 assoclen = req->assoclen - 8;
2601 else
2602 assoclen = req->assoclen;
2603 ccm_xtra = CCM_B0_SIZE +
2604 ((assoclen) ? CCM_AAD_FIELD_SIZE : 0);
2605
2606 auth_offset = req->cryptlen ?
2f47d580 2607 (assoclen + IV + 1 + ccm_xtra) : 0;
2debd332
HJ		 2608 if (op_type == CHCR_DECRYPT_OP) {
2609 if (crypto_aead_authsize(tfm) != req->cryptlen)
2610 tag_offset = crypto_aead_authsize(tfm);
2611 else
2612 auth_offset = 0;
2613 }
2614
2615
2616 sec_cpl->op_ivinsrtofst = FILL_SEC_CPL_OP_IVINSR(c_id,
2f47d580 2617 2, assoclen + 1 + ccm_xtra);
2debd332 2618 sec_cpl->pldlen =
2f47d580 2619 htonl(assoclen + IV + req->cryptlen + ccm_xtra);
2debd332
HJ		 2620 /* For CCM there wil be b0 always. So AAD start will be 1 always */
2621 sec_cpl->aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI(
2622 1, assoclen + ccm_xtra, assoclen
2f47d580 2623 + IV + 1 + ccm_xtra, 0);
2debd332
HJ		 2624
2625 sec_cpl->cipherstop_lo_authinsert = FILL_SEC_CPL_AUTHINSERT(0,
2626 auth_offset, tag_offset,
2627 (op_type == CHCR_ENCRYPT_OP) ? 0 :
2628 crypto_aead_authsize(tfm));
2629 sec_cpl->seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(op_type,
2630 (op_type == CHCR_ENCRYPT_OP) ? 0 : 1,
0a7bd30c 2631 cipher_mode, mac_mode,
2f47d580 2632 aeadctx->hmac_ctrl, IV >> 1);
2debd332
HJ		 2633
2634 sec_cpl->ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1, 0,
2f47d580 2635 0, dst_size);
2debd332
HJ		 2636}
2637
1efb892b
CIK		 2638static int aead_ccm_validate_input(unsigned short op_type,
2639 struct aead_request *req,
2640 struct chcr_aead_ctx *aeadctx,
2641 unsigned int sub_type)
2debd332
HJ		 2642{
2643 if (sub_type != CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) {
2644 if (crypto_ccm_check_iv(req->iv)) {
2645 pr_err("CCM: IV check fails\n");
2646 return -EINVAL;
2647 }
2648 } else {
2649 if (req->assoclen != 16 && req->assoclen != 20) {
2650 pr_err("RFC4309: Invalid AAD length %d\n",
2651 req->assoclen);
2652 return -EINVAL;
2653 }
2654 }
2debd332
HJ		 2655 return 0;
2656}
2657
2debd332
HJ		 2658static struct sk_buff *create_aead_ccm_wr(struct aead_request *req,
2659 unsigned short qid,
2660 int size,
2661 unsigned short op_type)
2662{
2663 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2f47d580 2664 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2debd332
HJ		 2665 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2666 struct sk_buff *skb = NULL;
2667 struct chcr_wr *chcr_req;
2668 struct cpl_rx_phys_dsgl *phys_cpl;
2f47d580
HJ		 2669 struct ulptx_sgl *ulptx;
2670 unsigned int transhdr_len;
2671 unsigned int dst_size = 0, kctx_len, dnents, temp;
2672 unsigned int sub_type, assoclen = req->assoclen;
2debd332 2673 unsigned int authsize = crypto_aead_authsize(tfm);
2f47d580 2674 int error = -EINVAL;
2debd332
HJ		 2675 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
2676 GFP_ATOMIC;
2f47d580 2677 struct adapter *adap = padap(a_ctx(tfm)->dev);
2debd332 2678
2f47d580
HJ		 2679 reqctx->b0_dma = 0;
2680 sub_type = get_aead_subtype(tfm);
2681 if (sub_type == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309)
2682 assoclen -= 8;
2f47d580
HJ		 2683 error = chcr_aead_common_init(req, op_type);
2684 if (error)
2685 return ERR_PTR(error);
0e93708d 2686
2f47d580
HJ		 2687
2688 reqctx->b0_len = CCM_B0_SIZE + (assoclen ? CCM_AAD_FIELD_SIZE : 0);
5fe8c711
HJ		 2689 error = aead_ccm_validate_input(op_type, req, aeadctx, sub_type);
2690 if (error)
2debd332 2691 goto err;
e1a018e6
HJ		 2692 dnents = sg_nents_xlen(req->dst, assoclen, CHCR_DST_SG_SIZE, 0);
2693 dnents += sg_nents_xlen(req->dst, req->cryptlen
2694 + (op_type ? -authsize : authsize),
2695 CHCR_DST_SG_SIZE, req->assoclen);
2696 dnents += MIN_CCM_SG; // For IV and B0
2f47d580 2697 dst_size = get_space_for_phys_dsgl(dnents);
125d01ca 2698 kctx_len = roundup(aeadctx->enckey_len, 16) * 2;
2debd332 2699 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
2f47d580
HJ		 2700 reqctx->imm = (transhdr_len + assoclen + IV + req->cryptlen +
2701 reqctx->b0_len) <= SGE_MAX_WR_LEN;
125d01ca
HJ		 2702 temp = reqctx->imm ? roundup(assoclen + IV + req->cryptlen +
2703 reqctx->b0_len, 16) :
2f47d580
HJ		 2704 (sgl_len(reqctx->src_nents + reqctx->aad_nents +
2705 MIN_CCM_SG) * 8);
2706 transhdr_len += temp;
125d01ca 2707 transhdr_len = roundup(transhdr_len, 16);
2f47d580
HJ		 2708
2709 if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE -
2710 reqctx->b0_len, transhdr_len, op_type)) {
ee0863ba 2711 atomic_inc(&adap->chcr_stats.fallback);
2f47d580
HJ		 2712 chcr_aead_dma_unmap(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev, req,
2713 op_type);
0e93708d
HJ		 2714 return ERR_PTR(chcr_aead_fallback(req, op_type));
2715 }
2f47d580 2716 skb = alloc_skb(SGE_MAX_WR_LEN, flags);
2debd332 2717
5fe8c711
HJ		 2718 if (!skb) {
2719 error = -ENOMEM;
2debd332 2720 goto err;
5fe8c711 2721 }
2debd332 2722
2f47d580 2723 chcr_req = (struct chcr_wr *) __skb_put_zero(skb, transhdr_len);
2debd332 2724
2f47d580 2725 fill_sec_cpl_for_aead(&chcr_req->sec_cpl, dst_size, req, op_type);
2debd332
HJ		 2726
2727 chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr;
2728 memcpy(chcr_req->key_ctx.key, aeadctx->key, aeadctx->enckey_len);
125d01ca
HJ		 2729 memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16),
2730 aeadctx->key, aeadctx->enckey_len);
2debd332
HJ		 2731
2732 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
2f47d580 2733 ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size);
5fe8c711
HJ		 2734 error = ccm_format_packet(req, aeadctx, sub_type, op_type);
2735 if (error)
2debd332
HJ		 2736 goto dstmap_fail;
2737
2f47d580
HJ		 2738 reqctx->b0_dma = dma_map_single(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev,
2739 &reqctx->scratch_pad, reqctx->b0_len,
2740 DMA_BIDIRECTIONAL);
2741 if (dma_mapping_error(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev,
2742 reqctx->b0_dma)) {
2743 error = -ENOMEM;
2debd332 2744 goto dstmap_fail;
2f47d580
HJ		 2745 }
2746
2747 chcr_add_aead_dst_ent(req, phys_cpl, assoclen, op_type, qid);
2748 chcr_add_aead_src_ent(req, ulptx, assoclen, op_type);
2debd332 2749
ee0863ba 2750 atomic_inc(&adap->chcr_stats.aead_rqst);
2f47d580
HJ		 2751 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size +
2752 kctx_len + (reqctx->imm ? (assoclen + IV + req->cryptlen +
2753 reqctx->b0_len) : 0);
2754 create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, 0,
2755 transhdr_len, temp, 0);
2debd332 2756 reqctx->skb = skb;
2f47d580
HJ		 2757 reqctx->op = op_type;
2758
2debd332
HJ		 2759 return skb;
2760dstmap_fail:
2761 kfree_skb(skb);
2debd332 2762err:
2f47d580 2763 chcr_aead_dma_unmap(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev, req, op_type);
5fe8c711 2764 return ERR_PTR(error);
2debd332
HJ		 2765}
2766
2767static struct sk_buff *create_gcm_wr(struct aead_request *req,
2768 unsigned short qid,
2769 int size,
2770 unsigned short op_type)
2771{
2772 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2f47d580 2773 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2debd332
HJ		 2774 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2775 struct sk_buff *skb = NULL;
2776 struct chcr_wr *chcr_req;
2777 struct cpl_rx_phys_dsgl *phys_cpl;
2f47d580
HJ		 2778 struct ulptx_sgl *ulptx;
2779 unsigned int transhdr_len, dnents = 0;
2780 unsigned int dst_size = 0, temp = 0, kctx_len, assoclen = req->assoclen;
2debd332 2781 unsigned int authsize = crypto_aead_authsize(tfm);
2f47d580 2782 int error = -EINVAL;
2debd332
HJ		 2783 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
2784 GFP_ATOMIC;
2f47d580 2785 struct adapter *adap = padap(a_ctx(tfm)->dev);
2debd332 2786
2f47d580
HJ		 2787 if (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106)
2788 assoclen = req->assoclen - 8;
2debd332 2789
2f47d580 2790 reqctx->b0_dma = 0;
2f47d580 2791 error = chcr_aead_common_init(req, op_type);
e1a018e6
HJ		 2792 if (error)
2793 return ERR_PTR(error);
2794 dnents = sg_nents_xlen(req->dst, assoclen, CHCR_DST_SG_SIZE, 0);
2795 dnents += sg_nents_xlen(req->dst, req->cryptlen +
2796 (op_type ? -authsize : authsize),
2f47d580 2797 CHCR_DST_SG_SIZE, req->assoclen);
e1a018e6 2798 dnents += MIN_GCM_SG; // For IV
2f47d580 2799 dst_size = get_space_for_phys_dsgl(dnents);
125d01ca 2800 kctx_len = roundup(aeadctx->enckey_len, 16) + AEAD_H_SIZE;
2debd332 2801 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
2f47d580
HJ		 2802 reqctx->imm = (transhdr_len + assoclen + IV + req->cryptlen) <=
2803 SGE_MAX_WR_LEN;
125d01ca
HJ		 2804 temp = reqctx->imm ? roundup(assoclen + IV + req->cryptlen, 16) :
2805 (sgl_len(reqctx->src_nents +
2806 reqctx->aad_nents + MIN_GCM_SG) * 8);
2f47d580 2807 transhdr_len += temp;
125d01ca 2808 transhdr_len = roundup(transhdr_len, 16);
2f47d580
HJ		 2809 if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE,
2810 transhdr_len, op_type)) {
ee0863ba 2811 atomic_inc(&adap->chcr_stats.fallback);
2f47d580
HJ		 2812 chcr_aead_dma_unmap(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev, req,
2813 op_type);
0e93708d
HJ		 2814 return ERR_PTR(chcr_aead_fallback(req, op_type));
2815 }
2f47d580 2816 skb = alloc_skb(SGE_MAX_WR_LEN, flags);
5fe8c711
HJ		 2817 if (!skb) {
2818 error = -ENOMEM;
2debd332 2819 goto err;
5fe8c711 2820 }
2debd332 2821
de77b966 2822 chcr_req = __skb_put_zero(skb, transhdr_len);
2debd332 2823
2f47d580
HJ		 2824 //Offset of tag from end
2825 temp = (op_type == CHCR_ENCRYPT_OP) ? 0 : authsize;
2debd332 2826 chcr_req->sec_cpl.op_ivinsrtofst = FILL_SEC_CPL_OP_IVINSR(
2f47d580
HJ		 2827 a_ctx(tfm)->dev->rx_channel_id, 2,
2828 (assoclen + 1));
0e93708d 2829 chcr_req->sec_cpl.pldlen =
2f47d580 2830 htonl(assoclen + IV + req->cryptlen);
2debd332 2831 chcr_req->sec_cpl.aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI(
d600fc8a 2832 assoclen ? 1 : 0, assoclen,
2f47d580 2833 assoclen + IV + 1, 0);
e1a018e6 2834 chcr_req->sec_cpl.cipherstop_lo_authinsert =
2f47d580
HJ		 2835 FILL_SEC_CPL_AUTHINSERT(0, assoclen + IV + 1,
2836 temp, temp);
e1a018e6 2837 chcr_req->sec_cpl.seqno_numivs =
2debd332
HJ		 2838 FILL_SEC_CPL_SCMD0_SEQNO(op_type, (op_type ==
2839 CHCR_ENCRYPT_OP) ? 1 : 0,
2840 CHCR_SCMD_CIPHER_MODE_AES_GCM,
0a7bd30c 2841 CHCR_SCMD_AUTH_MODE_GHASH,
2f47d580 2842 aeadctx->hmac_ctrl, IV >> 1);
2debd332 2843 chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1,
2f47d580 2844 0, 0, dst_size);
2debd332
HJ		 2845 chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr;
2846 memcpy(chcr_req->key_ctx.key, aeadctx->key, aeadctx->enckey_len);
125d01ca
HJ		 2847 memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16),
2848 GCM_CTX(aeadctx)->ghash_h, AEAD_H_SIZE);
2debd332
HJ		 2849
2850 /* prepare a 16 byte iv */
2851 /* S A L T | IV | 0x00000001 */
2852 if (get_aead_subtype(tfm) ==
2853 CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106) {
2854 memcpy(reqctx->iv, aeadctx->salt, 4);
8f6acb7f 2855 memcpy(reqctx->iv + 4, req->iv, GCM_RFC4106_IV_SIZE);
2debd332 2856 } else {
8f6acb7f 2857 memcpy(reqctx->iv, req->iv, GCM_AES_IV_SIZE);
2debd332
HJ		 2858 }
2859 *((unsigned int *)(reqctx->iv + 12)) = htonl(0x01);
2860
2861 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
2f47d580 2862 ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size);
2debd332 2863
2f47d580
HJ		 2864 chcr_add_aead_dst_ent(req, phys_cpl, assoclen, op_type, qid);
2865 chcr_add_aead_src_ent(req, ulptx, assoclen, op_type);
ee0863ba 2866 atomic_inc(&adap->chcr_stats.aead_rqst);
2f47d580
HJ		 2867 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size +
2868 kctx_len + (reqctx->imm ? (assoclen + IV + req->cryptlen) : 0);
2869 create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, size,
2870 transhdr_len, temp, reqctx->verify);
2debd332 2871 reqctx->skb = skb;
2f47d580 2872 reqctx->op = op_type;
2debd332
HJ		 2873 return skb;
2874
2debd332 2875err:
2f47d580 2876 chcr_aead_dma_unmap(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev, req, op_type);
5fe8c711 2877 return ERR_PTR(error);
2debd332
HJ		 2878}
2879
2880
2881
2882static int chcr_aead_cra_init(struct crypto_aead *tfm)
2883{
2f47d580 2884 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
0e93708d
HJ		 2885 struct aead_alg *alg = crypto_aead_alg(tfm);
2886
2887 aeadctx->sw_cipher = crypto_alloc_aead(alg->base.cra_name, 0,
5fe8c711
HJ		 2888 CRYPTO_ALG_NEED_FALLBACK |
2889 CRYPTO_ALG_ASYNC);
0e93708d
HJ		 2890 if (IS_ERR(aeadctx->sw_cipher))
2891 return PTR_ERR(aeadctx->sw_cipher);
2892 crypto_aead_set_reqsize(tfm, max(sizeof(struct chcr_aead_reqctx),
2893 sizeof(struct aead_request) +
2894 crypto_aead_reqsize(aeadctx->sw_cipher)));
2f47d580 2895 return chcr_device_init(a_ctx(tfm));
2debd332
HJ		 2896}
2897
2898static void chcr_aead_cra_exit(struct crypto_aead *tfm)
2899{
2f47d580 2900 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
0e93708d 2901
0e93708d 2902 crypto_free_aead(aeadctx->sw_cipher);
2debd332
HJ		 2903}
2904
2905static int chcr_authenc_null_setauthsize(struct crypto_aead *tfm,
2906 unsigned int authsize)
2907{
2f47d580 2908 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2debd332
HJ		 2909
2910 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NOP;
2911 aeadctx->mayverify = VERIFY_HW;
0e93708d 2912 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
2debd332
HJ		 2913}
2914static int chcr_authenc_setauthsize(struct crypto_aead *tfm,
2915 unsigned int authsize)
2916{
2f47d580 2917 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2debd332
HJ		 2918 u32 maxauth = crypto_aead_maxauthsize(tfm);
2919
2920 /*SHA1 authsize in ipsec is 12 instead of 10 i.e maxauthsize / 2 is not
2921 * true for sha1. authsize == 12 condition should be before
2922 * authsize == (maxauth >> 1)
2923 */
2924 if (authsize == ICV_4) {
2925 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1;
2926 aeadctx->mayverify = VERIFY_HW;
2927 } else if (authsize == ICV_6) {
2928 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL2;
2929 aeadctx->mayverify = VERIFY_HW;
2930 } else if (authsize == ICV_10) {
2931 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_TRUNC_RFC4366;
2932 aeadctx->mayverify = VERIFY_HW;
2933 } else if (authsize == ICV_12) {
2934 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
2935 aeadctx->mayverify = VERIFY_HW;
2936 } else if (authsize == ICV_14) {
2937 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3;
2938 aeadctx->mayverify = VERIFY_HW;
2939 } else if (authsize == (maxauth >> 1)) {
2940 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
2941 aeadctx->mayverify = VERIFY_HW;
2942 } else if (authsize == maxauth) {
2943 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
2944 aeadctx->mayverify = VERIFY_HW;
2945 } else {
2946 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
2947 aeadctx->mayverify = VERIFY_SW;
2948 }
0e93708d 2949 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
2debd332
HJ		 2950}
2951
2952
2953static int chcr_gcm_setauthsize(struct crypto_aead *tfm, unsigned int authsize)
2954{
2f47d580 2955 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2debd332
HJ		 2956
2957 switch (authsize) {
2958 case ICV_4:
2959 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1;
2960 aeadctx->mayverify = VERIFY_HW;
2961 break;
2962 case ICV_8:
2963 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
2964 aeadctx->mayverify = VERIFY_HW;
2965 break;
2966 case ICV_12:
2967 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
2968 aeadctx->mayverify = VERIFY_HW;
2969 break;
2970 case ICV_14:
2971 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3;
2972 aeadctx->mayverify = VERIFY_HW;
2973 break;
2974 case ICV_16:
2975 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
2976 aeadctx->mayverify = VERIFY_HW;
2977 break;
2978 case ICV_13:
2979 case ICV_15:
2980 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
2981 aeadctx->mayverify = VERIFY_SW;
2982 break;
2983 default:
2984
2985 crypto_tfm_set_flags((struct crypto_tfm *) tfm,
2986 CRYPTO_TFM_RES_BAD_KEY_LEN);
2987 return -EINVAL;
2988 }
0e93708d 2989 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
2debd332
HJ		 2990}
2991
2992static int chcr_4106_4309_setauthsize(struct crypto_aead *tfm,
2993 unsigned int authsize)
2994{
2f47d580 2995 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2debd332
HJ		 2996
2997 switch (authsize) {
2998 case ICV_8:
2999 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
3000 aeadctx->mayverify = VERIFY_HW;
3001 break;
3002 case ICV_12:
3003 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
3004 aeadctx->mayverify = VERIFY_HW;
3005 break;
3006 case ICV_16:
3007 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3008 aeadctx->mayverify = VERIFY_HW;
3009 break;
3010 default:
3011 crypto_tfm_set_flags((struct crypto_tfm *)tfm,
3012 CRYPTO_TFM_RES_BAD_KEY_LEN);
3013 return -EINVAL;
3014 }
0e93708d 3015 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
2debd332
HJ		 3016}
3017
3018static int chcr_ccm_setauthsize(struct crypto_aead *tfm,
3019 unsigned int authsize)
3020{
2f47d580 3021 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2debd332
HJ		 3022
3023 switch (authsize) {
3024 case ICV_4:
3025 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1;
3026 aeadctx->mayverify = VERIFY_HW;
3027 break;
3028 case ICV_6:
3029 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL2;
3030 aeadctx->mayverify = VERIFY_HW;
3031 break;
3032 case ICV_8:
3033 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
3034 aeadctx->mayverify = VERIFY_HW;
3035 break;
3036 case ICV_10:
3037 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_TRUNC_RFC4366;
3038 aeadctx->mayverify = VERIFY_HW;
3039 break;
3040 case ICV_12:
3041 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
3042 aeadctx->mayverify = VERIFY_HW;
3043 break;
3044 case ICV_14:
3045 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3;
3046 aeadctx->mayverify = VERIFY_HW;
3047 break;
3048 case ICV_16:
3049 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3050 aeadctx->mayverify = VERIFY_HW;
3051 break;
3052 default:
3053 crypto_tfm_set_flags((struct crypto_tfm *)tfm,
3054 CRYPTO_TFM_RES_BAD_KEY_LEN);
3055 return -EINVAL;
3056 }
0e93708d 3057 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
2debd332
HJ		 3058}
3059
0e93708d 3060static int chcr_ccm_common_setkey(struct crypto_aead *aead,
2debd332
HJ		 3061 const u8 *key,
3062 unsigned int keylen)
3063{
2f47d580 3064 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead));
2debd332
HJ		 3065 unsigned char ck_size, mk_size;
3066 int key_ctx_size = 0;
3067
125d01ca 3068 key_ctx_size = sizeof(struct _key_ctx) + roundup(keylen, 16) * 2;
2debd332 3069 if (keylen == AES_KEYSIZE_128) {
2debd332 3070 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
125d01ca 3071 mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_128;
2debd332
HJ		 3072 } else if (keylen == AES_KEYSIZE_192) {
3073 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
3074 mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_192;
3075 } else if (keylen == AES_KEYSIZE_256) {
3076 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
3077 mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256;
3078 } else {
3079 crypto_tfm_set_flags((struct crypto_tfm *)aead,
3080 CRYPTO_TFM_RES_BAD_KEY_LEN);
3081 aeadctx->enckey_len = 0;
3082 return -EINVAL;
3083 }
3084 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, mk_size, 0, 0,
3085 key_ctx_size >> 4);
0e93708d
HJ		 3086 memcpy(aeadctx->key, key, keylen);
3087 aeadctx->enckey_len = keylen;
3088
2debd332
HJ		 3089 return 0;
3090}
3091
0e93708d
HJ		 3092static int chcr_aead_ccm_setkey(struct crypto_aead *aead,
3093 const u8 *key,
3094 unsigned int keylen)
3095{
2f47d580 3096 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead));
0e93708d
HJ		 3097 int error;
3098
3099 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3100 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead) &
3101 CRYPTO_TFM_REQ_MASK);
3102 error = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3103 crypto_aead_clear_flags(aead, CRYPTO_TFM_RES_MASK);
3104 crypto_aead_set_flags(aead, crypto_aead_get_flags(aeadctx->sw_cipher) &
3105 CRYPTO_TFM_RES_MASK);
3106 if (error)
3107 return error;
3108 return chcr_ccm_common_setkey(aead, key, keylen);
3109}
3110
2debd332
HJ		 3111static int chcr_aead_rfc4309_setkey(struct crypto_aead *aead, const u8 *key,
3112 unsigned int keylen)
3113{
2f47d580 3114 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead));
4dbeae42 3115 int error;
2debd332
HJ		 3116
3117 if (keylen < 3) {
3118 crypto_tfm_set_flags((struct crypto_tfm *)aead,
3119 CRYPTO_TFM_RES_BAD_KEY_LEN);
3120 aeadctx->enckey_len = 0;
3121 return -EINVAL;
3122 }
4dbeae42
HJ		 3123 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3124 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead) &
3125 CRYPTO_TFM_REQ_MASK);
3126 error = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3127 crypto_aead_clear_flags(aead, CRYPTO_TFM_RES_MASK);
3128 crypto_aead_set_flags(aead, crypto_aead_get_flags(aeadctx->sw_cipher) &
3129 CRYPTO_TFM_RES_MASK);
3130 if (error)
3131 return error;
2debd332
HJ		 3132 keylen -= 3;
3133 memcpy(aeadctx->salt, key + keylen, 3);
0e93708d 3134 return chcr_ccm_common_setkey(aead, key, keylen);
2debd332
HJ		 3135}
3136
3137static int chcr_gcm_setkey(struct crypto_aead *aead, const u8 *key,
3138 unsigned int keylen)
3139{
2f47d580 3140 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead));
2debd332 3141 struct chcr_gcm_ctx *gctx = GCM_CTX(aeadctx);
8356ea51 3142 struct crypto_cipher *cipher;
2debd332
HJ		 3143 unsigned int ck_size;
3144 int ret = 0, key_ctx_size = 0;
3145
0e93708d
HJ		 3146 aeadctx->enckey_len = 0;
3147 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3148 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead)
3149 & CRYPTO_TFM_REQ_MASK);
3150 ret = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3151 crypto_aead_clear_flags(aead, CRYPTO_TFM_RES_MASK);
3152 crypto_aead_set_flags(aead, crypto_aead_get_flags(aeadctx->sw_cipher) &
3153 CRYPTO_TFM_RES_MASK);
3154 if (ret)
3155 goto out;
3156
7c2cf1c4
HJ		 3157 if (get_aead_subtype(aead) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106 &&
3158 keylen > 3) {
2debd332
HJ		 3159 keylen -= 4; /* nonce/salt is present in the last 4 bytes */
3160 memcpy(aeadctx->salt, key + keylen, 4);
3161 }
3162 if (keylen == AES_KEYSIZE_128) {
3163 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
3164 } else if (keylen == AES_KEYSIZE_192) {
3165 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
3166 } else if (keylen == AES_KEYSIZE_256) {
3167 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
3168 } else {
3169 crypto_tfm_set_flags((struct crypto_tfm *)aead,
3170 CRYPTO_TFM_RES_BAD_KEY_LEN);
0e93708d 3171 pr_err("GCM: Invalid key length %d\n", keylen);
2debd332
HJ		 3172 ret = -EINVAL;
3173 goto out;
3174 }
3175
3176 memcpy(aeadctx->key, key, keylen);
3177 aeadctx->enckey_len = keylen;
125d01ca 3178 key_ctx_size = sizeof(struct _key_ctx) + roundup(keylen, 16) +
2debd332 3179 AEAD_H_SIZE;
125d01ca 3180 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size,
2debd332
HJ		 3181 CHCR_KEYCTX_MAC_KEY_SIZE_128,
3182 0, 0,
3183 key_ctx_size >> 4);
8356ea51
HJ		 3184 /* Calculate the H = CIPH(K, 0 repeated 16 times).
3185 * It will go in key context
2debd332 3186 */
8356ea51
HJ		 3187 cipher = crypto_alloc_cipher("aes-generic", 0, 0);
3188 if (IS_ERR(cipher)) {
2debd332
HJ		 3189 aeadctx->enckey_len = 0;
3190 ret = -ENOMEM;
3191 goto out;
3192 }
8356ea51
HJ		 3193
3194 ret = crypto_cipher_setkey(cipher, key, keylen);
2debd332
HJ		 3195 if (ret) {
3196 aeadctx->enckey_len = 0;
3197 goto out1;
3198 }
3199 memset(gctx->ghash_h, 0, AEAD_H_SIZE);
8356ea51 3200 crypto_cipher_encrypt_one(cipher, gctx->ghash_h, gctx->ghash_h);
2debd332
HJ		 3201
3202out1:
8356ea51 3203 crypto_free_cipher(cipher);
2debd332
HJ		 3204out:
3205 return ret;
3206}
3207
3208static int chcr_authenc_setkey(struct crypto_aead *authenc, const u8 *key,
3209 unsigned int keylen)
3210{
2f47d580 3211 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(authenc));
2debd332
HJ		 3212 struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx);
3213 /* it contains auth and cipher key both*/
3214 struct crypto_authenc_keys keys;
3d64bd67 3215 unsigned int bs, subtype;
2debd332
HJ		 3216 unsigned int max_authsize = crypto_aead_alg(authenc)->maxauthsize;
3217 int err = 0, i, key_ctx_len = 0;
3218 unsigned char ck_size = 0;
3219 unsigned char pad[CHCR_HASH_MAX_BLOCK_SIZE_128] = { 0 };
ec1bca94 3220 struct crypto_shash *base_hash = ERR_PTR(-EINVAL);
2debd332
HJ		 3221 struct algo_param param;
3222 int align;
3223 u8 *o_ptr = NULL;
3224
0e93708d
HJ		 3225 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3226 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(authenc)
3227 & CRYPTO_TFM_REQ_MASK);
3228 err = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3229 crypto_aead_clear_flags(authenc, CRYPTO_TFM_RES_MASK);
3230 crypto_aead_set_flags(authenc, crypto_aead_get_flags(aeadctx->sw_cipher)
3231 & CRYPTO_TFM_RES_MASK);
3232 if (err)
3233 goto out;
3234
2debd332
HJ		 3235 if (crypto_authenc_extractkeys(&keys, key, keylen) != 0) {
3236 crypto_aead_set_flags(authenc, CRYPTO_TFM_RES_BAD_KEY_LEN);
3237 goto out;
3238 }
3239
3240 if (get_alg_config(&param, max_authsize)) {
3241 pr_err("chcr : Unsupported digest size\n");
3242 goto out;
3243 }
3d64bd67
HJ		 3244 subtype = get_aead_subtype(authenc);
3245 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
3246 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
3247 if (keys.enckeylen < CTR_RFC3686_NONCE_SIZE)
3248 goto out;
3249 memcpy(aeadctx->nonce, keys.enckey + (keys.enckeylen
3250 - CTR_RFC3686_NONCE_SIZE), CTR_RFC3686_NONCE_SIZE);
3251 keys.enckeylen -= CTR_RFC3686_NONCE_SIZE;
3252 }
2debd332
HJ		 3253 if (keys.enckeylen == AES_KEYSIZE_128) {
3254 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
3255 } else if (keys.enckeylen == AES_KEYSIZE_192) {
3256 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
3257 } else if (keys.enckeylen == AES_KEYSIZE_256) {
3258 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
3259 } else {
3260 pr_err("chcr : Unsupported cipher key\n");
3261 goto out;
3262 }
3263
3264 /* Copy only encryption key. We use authkey to generate h(ipad) and
3265 * h(opad) so authkey is not needed again. authkeylen size have the
3266 * size of the hash digest size.
3267 */
3268 memcpy(aeadctx->key, keys.enckey, keys.enckeylen);
3269 aeadctx->enckey_len = keys.enckeylen;
3d64bd67
HJ		 3270 if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_SHA ||
3271 subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL) {
2debd332 3272
3d64bd67
HJ		 3273 get_aes_decrypt_key(actx->dec_rrkey, aeadctx->key,
3274 aeadctx->enckey_len << 3);
3275 }
2debd332
HJ		 3276 base_hash = chcr_alloc_shash(max_authsize);
3277 if (IS_ERR(base_hash)) {
3278 pr_err("chcr : Base driver cannot be loaded\n");
0e93708d
HJ		 3279 aeadctx->enckey_len = 0;
3280 return -EINVAL;
324429d7 3281 }
2debd332
HJ		 3282 {
3283 SHASH_DESC_ON_STACK(shash, base_hash);
3284 shash->tfm = base_hash;
3285 shash->flags = crypto_shash_get_flags(base_hash);
3286 bs = crypto_shash_blocksize(base_hash);
3287 align = KEYCTX_ALIGN_PAD(max_authsize);
3288 o_ptr = actx->h_iopad + param.result_size + align;
3289
3290 if (keys.authkeylen > bs) {
3291 err = crypto_shash_digest(shash, keys.authkey,
3292 keys.authkeylen,
3293 o_ptr);
3294 if (err) {
3295 pr_err("chcr : Base driver cannot be loaded\n");
3296 goto out;
3297 }
3298 keys.authkeylen = max_authsize;
3299 } else
3300 memcpy(o_ptr, keys.authkey, keys.authkeylen);
3301
3302 /* Compute the ipad-digest*/
3303 memset(pad + keys.authkeylen, 0, bs - keys.authkeylen);
3304 memcpy(pad, o_ptr, keys.authkeylen);
3305 for (i = 0; i < bs >> 2; i++)
3306 *((unsigned int *)pad + i) ^= IPAD_DATA;
3307
3308 if (chcr_compute_partial_hash(shash, pad, actx->h_iopad,
3309 max_authsize))
3310 goto out;
3311 /* Compute the opad-digest */
3312 memset(pad + keys.authkeylen, 0, bs - keys.authkeylen);
3313 memcpy(pad, o_ptr, keys.authkeylen);
3314 for (i = 0; i < bs >> 2; i++)
3315 *((unsigned int *)pad + i) ^= OPAD_DATA;
3316
3317 if (chcr_compute_partial_hash(shash, pad, o_ptr, max_authsize))
3318 goto out;
3319
3320 /* convert the ipad and opad digest to network order */
3321 chcr_change_order(actx->h_iopad, param.result_size);
3322 chcr_change_order(o_ptr, param.result_size);
3323 key_ctx_len = sizeof(struct _key_ctx) +
125d01ca 3324 roundup(keys.enckeylen, 16) +
2debd332
HJ		 3325 (param.result_size + align) * 2;
3326 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, param.mk_size,
3327 0, 1, key_ctx_len >> 4);
3328 actx->auth_mode = param.auth_mode;
3329 chcr_free_shash(base_hash);
3330
3331 return 0;
3332 }
3333out:
3334 aeadctx->enckey_len = 0;
ec1bca94 3335 if (!IS_ERR(base_hash))
2debd332
HJ		 3336 chcr_free_shash(base_hash);
3337 return -EINVAL;
324429d7
HS		 3338}
3339
2debd332
HJ		 3340static int chcr_aead_digest_null_setkey(struct crypto_aead *authenc,
3341 const u8 *key, unsigned int keylen)
3342{
2f47d580 3343 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(authenc));
2debd332
HJ		 3344 struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx);
3345 struct crypto_authenc_keys keys;
0e93708d 3346 int err;
2debd332 3347 /* it contains auth and cipher key both*/
3d64bd67 3348 unsigned int subtype;
2debd332
HJ		 3349 int key_ctx_len = 0;
3350 unsigned char ck_size = 0;
3351
0e93708d
HJ		 3352 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3353 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(authenc)
3354 & CRYPTO_TFM_REQ_MASK);
3355 err = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3356 crypto_aead_clear_flags(authenc, CRYPTO_TFM_RES_MASK);
3357 crypto_aead_set_flags(authenc, crypto_aead_get_flags(aeadctx->sw_cipher)
3358 & CRYPTO_TFM_RES_MASK);
3359 if (err)
3360 goto out;
3361
2debd332
HJ		 3362 if (crypto_authenc_extractkeys(&keys, key, keylen) != 0) {
3363 crypto_aead_set_flags(authenc, CRYPTO_TFM_RES_BAD_KEY_LEN);
3364 goto out;
3365 }
3d64bd67
HJ		 3366 subtype = get_aead_subtype(authenc);
3367 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
3368 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
3369 if (keys.enckeylen < CTR_RFC3686_NONCE_SIZE)
3370 goto out;
3371 memcpy(aeadctx->nonce, keys.enckey + (keys.enckeylen
3372 - CTR_RFC3686_NONCE_SIZE), CTR_RFC3686_NONCE_SIZE);
3373 keys.enckeylen -= CTR_RFC3686_NONCE_SIZE;
3374 }
2debd332
HJ		 3375 if (keys.enckeylen == AES_KEYSIZE_128) {
3376 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
3377 } else if (keys.enckeylen == AES_KEYSIZE_192) {
3378 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
3379 } else if (keys.enckeylen == AES_KEYSIZE_256) {
3380 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
3381 } else {
3d64bd67 3382 pr_err("chcr : Unsupported cipher key %d\n", keys.enckeylen);
2debd332
HJ		 3383 goto out;
3384 }
3385 memcpy(aeadctx->key, keys.enckey, keys.enckeylen);
3386 aeadctx->enckey_len = keys.enckeylen;
3d64bd67
HJ		 3387 if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_SHA ||
3388 subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL) {
3389 get_aes_decrypt_key(actx->dec_rrkey, aeadctx->key,
3390 aeadctx->enckey_len << 3);
3391 }
125d01ca 3392 key_ctx_len = sizeof(struct _key_ctx) + roundup(keys.enckeylen, 16);
2debd332
HJ		 3393
3394 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY, 0,
3395 0, key_ctx_len >> 4);
3396 actx->auth_mode = CHCR_SCMD_AUTH_MODE_NOP;
3397 return 0;
3398out:
3399 aeadctx->enckey_len = 0;
3400 return -EINVAL;
3401}
6dad4e8a
AG		 3402
3403static int chcr_aead_op(struct aead_request *req,
3404 unsigned short op_type,
3405 int size,
3406 create_wr_t create_wr_fn)
3407{
3408 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
3409 struct uld_ctx *u_ctx;
3410 struct sk_buff *skb;
3411
3412 if (!a_ctx(tfm)->dev) {
3413 pr_err("chcr : %s : No crypto device.\n", __func__);
3414 return -ENXIO;
3415 }
3416 u_ctx = ULD_CTX(a_ctx(tfm));
3417 if (cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
3418 a_ctx(tfm)->tx_qidx)) {
3419 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
3420 return -EBUSY;
3421 }
3422
3423 /* Form a WR from req */
3424 skb = create_wr_fn(req, u_ctx->lldi.rxq_ids[a_ctx(tfm)->rx_qidx], size,
3425 op_type);
3426
3427 if (IS_ERR(skb) || !skb)
3428 return PTR_ERR(skb);
3429
3430 skb->dev = u_ctx->lldi.ports[0];
3431 set_wr_txq(skb, CPL_PRIORITY_DATA, a_ctx(tfm)->tx_qidx);
3432 chcr_send_wr(skb);
3433 return -EINPROGRESS;
3434}
3435
2debd332
HJ		 3436static int chcr_aead_encrypt(struct aead_request *req)
3437{
3438 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
3439 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
3440
3441 reqctx->verify = VERIFY_HW;
3442
3443 switch (get_aead_subtype(tfm)) {
3d64bd67
HJ		 3444 case CRYPTO_ALG_SUB_TYPE_CTR_SHA:
3445 case CRYPTO_ALG_SUB_TYPE_CBC_SHA:
3446 case CRYPTO_ALG_SUB_TYPE_CBC_NULL:
3447 case CRYPTO_ALG_SUB_TYPE_CTR_NULL:
2debd332
HJ		 3448 return chcr_aead_op(req, CHCR_ENCRYPT_OP, 0,
3449 create_authenc_wr);
3450 case CRYPTO_ALG_SUB_TYPE_AEAD_CCM:
3451 case CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309:
3452 return chcr_aead_op(req, CHCR_ENCRYPT_OP, 0,
3453 create_aead_ccm_wr);
3454 default:
3455 return chcr_aead_op(req, CHCR_ENCRYPT_OP, 0,
3456 create_gcm_wr);
3457 }
3458}
3459
3460static int chcr_aead_decrypt(struct aead_request *req)
3461{
3462 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2f47d580 3463 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2debd332
HJ		 3464 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
3465 int size;
3466
3467 if (aeadctx->mayverify == VERIFY_SW) {
3468 size = crypto_aead_maxauthsize(tfm);
3469 reqctx->verify = VERIFY_SW;
3470 } else {
3471 size = 0;
3472 reqctx->verify = VERIFY_HW;
3473 }
3474
3475 switch (get_aead_subtype(tfm)) {
3d64bd67
HJ		 3476 case CRYPTO_ALG_SUB_TYPE_CBC_SHA:
3477 case CRYPTO_ALG_SUB_TYPE_CTR_SHA:
3478 case CRYPTO_ALG_SUB_TYPE_CBC_NULL:
3479 case CRYPTO_ALG_SUB_TYPE_CTR_NULL:
2debd332
HJ		 3480 return chcr_aead_op(req, CHCR_DECRYPT_OP, size,
3481 create_authenc_wr);
3482 case CRYPTO_ALG_SUB_TYPE_AEAD_CCM:
3483 case CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309:
3484 return chcr_aead_op(req, CHCR_DECRYPT_OP, size,
3485 create_aead_ccm_wr);
3486 default:
3487 return chcr_aead_op(req, CHCR_DECRYPT_OP, size,
3488 create_gcm_wr);
3489 }
3490}
3491
324429d7
HS		 3492static struct chcr_alg_template driver_algs[] = {
3493 /* AES-CBC */
3494 {
b8fd1f41 3495 .type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_SUB_TYPE_CBC,
324429d7
HS		 3496 .is_registered = 0,
3497 .alg.crypto = {
3498 .cra_name = "cbc(aes)",
2debd332 3499 .cra_driver_name = "cbc-aes-chcr",
324429d7 3500 .cra_blocksize = AES_BLOCK_SIZE,
324429d7 3501 .cra_init = chcr_cra_init,
b8fd1f41 3502 .cra_exit = chcr_cra_exit,
324429d7
HS		 3503 .cra_u.ablkcipher = {
3504 .min_keysize = AES_MIN_KEY_SIZE,
3505 .max_keysize = AES_MAX_KEY_SIZE,
3506 .ivsize = AES_BLOCK_SIZE,
3507 .setkey = chcr_aes_cbc_setkey,
3508 .encrypt = chcr_aes_encrypt,
3509 .decrypt = chcr_aes_decrypt,
3510 }
3511 }
3512 },
3513 {
b8fd1f41 3514 .type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_SUB_TYPE_XTS,
324429d7
HS		 3515 .is_registered = 0,
3516 .alg.crypto = {
3517 .cra_name = "xts(aes)",
2debd332 3518 .cra_driver_name = "xts-aes-chcr",
324429d7 3519 .cra_blocksize = AES_BLOCK_SIZE,
324429d7
HS		 3520 .cra_init = chcr_cra_init,
3521 .cra_exit = NULL,
b8fd1f41 3522 .cra_u .ablkcipher = {
324429d7
HS		 3523 .min_keysize = 2 * AES_MIN_KEY_SIZE,
3524 .max_keysize = 2 * AES_MAX_KEY_SIZE,
3525 .ivsize = AES_BLOCK_SIZE,
3526 .setkey = chcr_aes_xts_setkey,
3527 .encrypt = chcr_aes_encrypt,
3528 .decrypt = chcr_aes_decrypt,
3529 }
3530 }
b8fd1f41
HJ		 3531 },
3532 {
3533 .type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_SUB_TYPE_CTR,
3534 .is_registered = 0,
3535 .alg.crypto = {
3536 .cra_name = "ctr(aes)",
3537 .cra_driver_name = "ctr-aes-chcr",
3538 .cra_blocksize = 1,
3539 .cra_init = chcr_cra_init,
3540 .cra_exit = chcr_cra_exit,
3541 .cra_u.ablkcipher = {
3542 .min_keysize = AES_MIN_KEY_SIZE,
3543 .max_keysize = AES_MAX_KEY_SIZE,
3544 .ivsize = AES_BLOCK_SIZE,
3545 .setkey = chcr_aes_ctr_setkey,
3546 .encrypt = chcr_aes_encrypt,
3547 .decrypt = chcr_aes_decrypt,
3548 }
3549 }
3550 },
3551 {
3552 .type = CRYPTO_ALG_TYPE_ABLKCIPHER |
3553 CRYPTO_ALG_SUB_TYPE_CTR_RFC3686,
3554 .is_registered = 0,
3555 .alg.crypto = {
3556 .cra_name = "rfc3686(ctr(aes))",
3557 .cra_driver_name = "rfc3686-ctr-aes-chcr",
3558 .cra_blocksize = 1,
3559 .cra_init = chcr_rfc3686_init,
3560 .cra_exit = chcr_cra_exit,
3561 .cra_u.ablkcipher = {
3562 .min_keysize = AES_MIN_KEY_SIZE +
3563 CTR_RFC3686_NONCE_SIZE,
3564 .max_keysize = AES_MAX_KEY_SIZE +
3565 CTR_RFC3686_NONCE_SIZE,
3566 .ivsize = CTR_RFC3686_IV_SIZE,
3567 .setkey = chcr_aes_rfc3686_setkey,
3568 .encrypt = chcr_aes_encrypt,
3569 .decrypt = chcr_aes_decrypt,
3570 .geniv = "seqiv",
3571 }
324429d7
HS		 3572 }
3573 },
3574 /* SHA */
3575 {
3576 .type = CRYPTO_ALG_TYPE_AHASH,
3577 .is_registered = 0,
3578 .alg.hash = {
3579 .halg.digestsize = SHA1_DIGEST_SIZE,
3580 .halg.base = {
3581 .cra_name = "sha1",
3582 .cra_driver_name = "sha1-chcr",
3583 .cra_blocksize = SHA1_BLOCK_SIZE,
3584 }
3585 }
3586 },
3587 {
3588 .type = CRYPTO_ALG_TYPE_AHASH,
3589 .is_registered = 0,
3590 .alg.hash = {
3591 .halg.digestsize = SHA256_DIGEST_SIZE,
3592 .halg.base = {
3593 .cra_name = "sha256",
3594 .cra_driver_name = "sha256-chcr",
3595 .cra_blocksize = SHA256_BLOCK_SIZE,
3596 }
3597 }
3598 },
3599 {
3600 .type = CRYPTO_ALG_TYPE_AHASH,
3601 .is_registered = 0,
3602 .alg.hash = {
3603 .halg.digestsize = SHA224_DIGEST_SIZE,
3604 .halg.base = {
3605 .cra_name = "sha224",
3606 .cra_driver_name = "sha224-chcr",
3607 .cra_blocksize = SHA224_BLOCK_SIZE,
3608 }
3609 }
3610 },
3611 {
3612 .type = CRYPTO_ALG_TYPE_AHASH,
3613 .is_registered = 0,
3614 .alg.hash = {
3615 .halg.digestsize = SHA384_DIGEST_SIZE,
3616 .halg.base = {
3617 .cra_name = "sha384",
3618 .cra_driver_name = "sha384-chcr",
3619 .cra_blocksize = SHA384_BLOCK_SIZE,
3620 }
3621 }
3622 },
3623 {
3624 .type = CRYPTO_ALG_TYPE_AHASH,
3625 .is_registered = 0,
3626 .alg.hash = {
3627 .halg.digestsize = SHA512_DIGEST_SIZE,
3628 .halg.base = {
3629 .cra_name = "sha512",
3630 .cra_driver_name = "sha512-chcr",
3631 .cra_blocksize = SHA512_BLOCK_SIZE,
3632 }
3633 }
3634 },
3635 /* HMAC */
3636 {
3637 .type = CRYPTO_ALG_TYPE_HMAC,
3638 .is_registered = 0,
3639 .alg.hash = {
3640 .halg.digestsize = SHA1_DIGEST_SIZE,
3641 .halg.base = {
3642 .cra_name = "hmac(sha1)",
2debd332 3643 .cra_driver_name = "hmac-sha1-chcr",
324429d7
HS		 3644 .cra_blocksize = SHA1_BLOCK_SIZE,
3645 }
3646 }
3647 },
3648 {
3649 .type = CRYPTO_ALG_TYPE_HMAC,
3650 .is_registered = 0,
3651 .alg.hash = {
3652 .halg.digestsize = SHA224_DIGEST_SIZE,
3653 .halg.base = {
3654 .cra_name = "hmac(sha224)",
2debd332 3655 .cra_driver_name = "hmac-sha224-chcr",
324429d7
HS		 3656 .cra_blocksize = SHA224_BLOCK_SIZE,
3657 }
3658 }
3659 },
3660 {
3661 .type = CRYPTO_ALG_TYPE_HMAC,
3662 .is_registered = 0,
3663 .alg.hash = {
3664 .halg.digestsize = SHA256_DIGEST_SIZE,
3665 .halg.base = {
3666 .cra_name = "hmac(sha256)",
2debd332 3667 .cra_driver_name = "hmac-sha256-chcr",
324429d7
HS		 3668 .cra_blocksize = SHA256_BLOCK_SIZE,
3669 }
3670 }
3671 },
3672 {
3673 .type = CRYPTO_ALG_TYPE_HMAC,
3674 .is_registered = 0,
3675 .alg.hash = {
3676 .halg.digestsize = SHA384_DIGEST_SIZE,
3677 .halg.base = {
3678 .cra_name = "hmac(sha384)",
2debd332 3679 .cra_driver_name = "hmac-sha384-chcr",
324429d7
HS		 3680 .cra_blocksize = SHA384_BLOCK_SIZE,
3681 }
3682 }
3683 },
3684 {
3685 .type = CRYPTO_ALG_TYPE_HMAC,
3686 .is_registered = 0,
3687 .alg.hash = {
3688 .halg.digestsize = SHA512_DIGEST_SIZE,
3689 .halg.base = {
3690 .cra_name = "hmac(sha512)",
2debd332 3691 .cra_driver_name = "hmac-sha512-chcr",
324429d7
HS		 3692 .cra_blocksize = SHA512_BLOCK_SIZE,
3693 }
3694 }
3695 },
2debd332
HJ		 3696 /* Add AEAD Algorithms */
3697 {
3698 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_GCM,
3699 .is_registered = 0,
3700 .alg.aead = {
3701 .base = {
3702 .cra_name = "gcm(aes)",
3703 .cra_driver_name = "gcm-aes-chcr",
3704 .cra_blocksize = 1,
e29abda5 3705 .cra_priority = CHCR_AEAD_PRIORITY,
2debd332
HJ		 3706 .cra_ctxsize = sizeof(struct chcr_context) +
3707 sizeof(struct chcr_aead_ctx) +
3708 sizeof(struct chcr_gcm_ctx),
3709 },
8f6acb7f 3710 .ivsize = GCM_AES_IV_SIZE,
2debd332
HJ		 3711 .maxauthsize = GHASH_DIGEST_SIZE,
3712 .setkey = chcr_gcm_setkey,
3713 .setauthsize = chcr_gcm_setauthsize,
3714 }
3715 },
3716 {
3717 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106,
3718 .is_registered = 0,
3719 .alg.aead = {
3720 .base = {
3721 .cra_name = "rfc4106(gcm(aes))",
3722 .cra_driver_name = "rfc4106-gcm-aes-chcr",
3723 .cra_blocksize = 1,
e29abda5 3724 .cra_priority = CHCR_AEAD_PRIORITY + 1,
2debd332
HJ		 3725 .cra_ctxsize = sizeof(struct chcr_context) +
3726 sizeof(struct chcr_aead_ctx) +
3727 sizeof(struct chcr_gcm_ctx),
3728
3729 },
8f6acb7f 3730 .ivsize = GCM_RFC4106_IV_SIZE,
2debd332
HJ		 3731 .maxauthsize = GHASH_DIGEST_SIZE,
3732 .setkey = chcr_gcm_setkey,
3733 .setauthsize = chcr_4106_4309_setauthsize,
3734 }
3735 },
3736 {
3737 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_CCM,
3738 .is_registered = 0,
3739 .alg.aead = {
3740 .base = {
3741 .cra_name = "ccm(aes)",
3742 .cra_driver_name = "ccm-aes-chcr",
3743 .cra_blocksize = 1,
e29abda5 3744 .cra_priority = CHCR_AEAD_PRIORITY,
2debd332
HJ		 3745 .cra_ctxsize = sizeof(struct chcr_context) +
3746 sizeof(struct chcr_aead_ctx),
3747
3748 },
3749 .ivsize = AES_BLOCK_SIZE,
3750 .maxauthsize = GHASH_DIGEST_SIZE,
3751 .setkey = chcr_aead_ccm_setkey,
3752 .setauthsize = chcr_ccm_setauthsize,
3753 }
3754 },
3755 {
3756 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309,
3757 .is_registered = 0,
3758 .alg.aead = {
3759 .base = {
3760 .cra_name = "rfc4309(ccm(aes))",
3761 .cra_driver_name = "rfc4309-ccm-aes-chcr",
3762 .cra_blocksize = 1,
e29abda5 3763 .cra_priority = CHCR_AEAD_PRIORITY + 1,
2debd332
HJ		 3764 .cra_ctxsize = sizeof(struct chcr_context) +
3765 sizeof(struct chcr_aead_ctx),
3766
3767 },
3768 .ivsize = 8,
3769 .maxauthsize = GHASH_DIGEST_SIZE,
3770 .setkey = chcr_aead_rfc4309_setkey,
3771 .setauthsize = chcr_4106_4309_setauthsize,
3772 }
3773 },
3774 {
3d64bd67 3775 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
2debd332
HJ		 3776 .is_registered = 0,
3777 .alg.aead = {
3778 .base = {
3779 .cra_name = "authenc(hmac(sha1),cbc(aes))",
3780 .cra_driver_name =
3781 "authenc-hmac-sha1-cbc-aes-chcr",
3782 .cra_blocksize = AES_BLOCK_SIZE,
e29abda5 3783 .cra_priority = CHCR_AEAD_PRIORITY,
2debd332
HJ		 3784 .cra_ctxsize = sizeof(struct chcr_context) +
3785 sizeof(struct chcr_aead_ctx) +
3786 sizeof(struct chcr_authenc_ctx),
3787
3788 },
3789 .ivsize = AES_BLOCK_SIZE,
3790 .maxauthsize = SHA1_DIGEST_SIZE,
3791 .setkey = chcr_authenc_setkey,
3792 .setauthsize = chcr_authenc_setauthsize,
3793 }
3794 },
3795 {
3d64bd67 3796 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
2debd332
HJ		 3797 .is_registered = 0,
3798 .alg.aead = {
3799 .base = {
3800
3801 .cra_name = "authenc(hmac(sha256),cbc(aes))",
3802 .cra_driver_name =
3803 "authenc-hmac-sha256-cbc-aes-chcr",
3804 .cra_blocksize = AES_BLOCK_SIZE,
e29abda5 3805 .cra_priority = CHCR_AEAD_PRIORITY,
2debd332
HJ		 3806 .cra_ctxsize = sizeof(struct chcr_context) +
3807 sizeof(struct chcr_aead_ctx) +
3808 sizeof(struct chcr_authenc_ctx),
3809
3810 },
3811 .ivsize = AES_BLOCK_SIZE,
3812 .maxauthsize = SHA256_DIGEST_SIZE,
3813 .setkey = chcr_authenc_setkey,
3814 .setauthsize = chcr_authenc_setauthsize,
3815 }
3816 },
3817 {
3d64bd67 3818 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
2debd332
HJ		 3819 .is_registered = 0,
3820 .alg.aead = {
3821 .base = {
3822 .cra_name = "authenc(hmac(sha224),cbc(aes))",
3823 .cra_driver_name =
3824 "authenc-hmac-sha224-cbc-aes-chcr",
3825 .cra_blocksize = AES_BLOCK_SIZE,
e29abda5 3826 .cra_priority = CHCR_AEAD_PRIORITY,
2debd332
HJ		 3827 .cra_ctxsize = sizeof(struct chcr_context) +
3828 sizeof(struct chcr_aead_ctx) +
3829 sizeof(struct chcr_authenc_ctx),
3830 },
3831 .ivsize = AES_BLOCK_SIZE,
3832 .maxauthsize = SHA224_DIGEST_SIZE,
3833 .setkey = chcr_authenc_setkey,
3834 .setauthsize = chcr_authenc_setauthsize,
3835 }
3836 },
3837 {
3d64bd67 3838 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
2debd332
HJ		 3839 .is_registered = 0,
3840 .alg.aead = {
3841 .base = {
3842 .cra_name = "authenc(hmac(sha384),cbc(aes))",
3843 .cra_driver_name =
3844 "authenc-hmac-sha384-cbc-aes-chcr",
3845 .cra_blocksize = AES_BLOCK_SIZE,
e29abda5 3846 .cra_priority = CHCR_AEAD_PRIORITY,
2debd332
HJ		 3847 .cra_ctxsize = sizeof(struct chcr_context) +
3848 sizeof(struct chcr_aead_ctx) +
3849 sizeof(struct chcr_authenc_ctx),
3850
3851 },
3852 .ivsize = AES_BLOCK_SIZE,
3853 .maxauthsize = SHA384_DIGEST_SIZE,
3854 .setkey = chcr_authenc_setkey,
3855 .setauthsize = chcr_authenc_setauthsize,
3856 }
3857 },
3858 {
3d64bd67 3859 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
2debd332
HJ		 3860 .is_registered = 0,
3861 .alg.aead = {
3862 .base = {
3863 .cra_name = "authenc(hmac(sha512),cbc(aes))",
3864 .cra_driver_name =
3865 "authenc-hmac-sha512-cbc-aes-chcr",
3866 .cra_blocksize = AES_BLOCK_SIZE,
e29abda5 3867 .cra_priority = CHCR_AEAD_PRIORITY,
2debd332
HJ		 3868 .cra_ctxsize = sizeof(struct chcr_context) +
3869 sizeof(struct chcr_aead_ctx) +
3870 sizeof(struct chcr_authenc_ctx),
3871
3872 },
3873 .ivsize = AES_BLOCK_SIZE,
3874 .maxauthsize = SHA512_DIGEST_SIZE,
3875 .setkey = chcr_authenc_setkey,
3876 .setauthsize = chcr_authenc_setauthsize,
3877 }
3878 },
3879 {
3d64bd67 3880 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_NULL,
2debd332
HJ		 3881 .is_registered = 0,
3882 .alg.aead = {
3883 .base = {
3884 .cra_name = "authenc(digest_null,cbc(aes))",
3885 .cra_driver_name =
3886 "authenc-digest_null-cbc-aes-chcr",
3887 .cra_blocksize = AES_BLOCK_SIZE,
e29abda5 3888 .cra_priority = CHCR_AEAD_PRIORITY,
2debd332
HJ		 3889 .cra_ctxsize = sizeof(struct chcr_context) +
3890 sizeof(struct chcr_aead_ctx) +
3891 sizeof(struct chcr_authenc_ctx),
3892
3893 },
3894 .ivsize = AES_BLOCK_SIZE,
3895 .maxauthsize = 0,
3896 .setkey = chcr_aead_digest_null_setkey,
3897 .setauthsize = chcr_authenc_null_setauthsize,
3898 }
3899 },
3d64bd67
HJ		 3900 {
3901 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
3902 .is_registered = 0,
3903 .alg.aead = {
3904 .base = {
3905 .cra_name = "authenc(hmac(sha1),rfc3686(ctr(aes)))",
3906 .cra_driver_name =
3907 "authenc-hmac-sha1-rfc3686-ctr-aes-chcr",
3908 .cra_blocksize = 1,
3909 .cra_priority = CHCR_AEAD_PRIORITY,
3910 .cra_ctxsize = sizeof(struct chcr_context) +
3911 sizeof(struct chcr_aead_ctx) +
3912 sizeof(struct chcr_authenc_ctx),
3913
3914 },
3915 .ivsize = CTR_RFC3686_IV_SIZE,
3916 .maxauthsize = SHA1_DIGEST_SIZE,
3917 .setkey = chcr_authenc_setkey,
3918 .setauthsize = chcr_authenc_setauthsize,
3919 }
3920 },
3921 {
3922 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
3923 .is_registered = 0,
3924 .alg.aead = {
3925 .base = {
3926
3927 .cra_name = "authenc(hmac(sha256),rfc3686(ctr(aes)))",
3928 .cra_driver_name =
3929 "authenc-hmac-sha256-rfc3686-ctr-aes-chcr",
3930 .cra_blocksize = 1,
3931 .cra_priority = CHCR_AEAD_PRIORITY,
3932 .cra_ctxsize = sizeof(struct chcr_context) +
3933 sizeof(struct chcr_aead_ctx) +
3934 sizeof(struct chcr_authenc_ctx),
3935
3936 },
3937 .ivsize = CTR_RFC3686_IV_SIZE,
3938 .maxauthsize = SHA256_DIGEST_SIZE,
3939 .setkey = chcr_authenc_setkey,
3940 .setauthsize = chcr_authenc_setauthsize,
3941 }
3942 },
3943 {
3944 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
3945 .is_registered = 0,
3946 .alg.aead = {
3947 .base = {
3948 .cra_name = "authenc(hmac(sha224),rfc3686(ctr(aes)))",
3949 .cra_driver_name =
3950 "authenc-hmac-sha224-rfc3686-ctr-aes-chcr",
3951 .cra_blocksize = 1,
3952 .cra_priority = CHCR_AEAD_PRIORITY,
3953 .cra_ctxsize = sizeof(struct chcr_context) +
3954 sizeof(struct chcr_aead_ctx) +
3955 sizeof(struct chcr_authenc_ctx),
3956 },
3957 .ivsize = CTR_RFC3686_IV_SIZE,
3958 .maxauthsize = SHA224_DIGEST_SIZE,
3959 .setkey = chcr_authenc_setkey,
3960 .setauthsize = chcr_authenc_setauthsize,
3961 }
3962 },
3963 {
3964 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
3965 .is_registered = 0,
3966 .alg.aead = {
3967 .base = {
3968 .cra_name = "authenc(hmac(sha384),rfc3686(ctr(aes)))",
3969 .cra_driver_name =
3970 "authenc-hmac-sha384-rfc3686-ctr-aes-chcr",
3971 .cra_blocksize = 1,
3972 .cra_priority = CHCR_AEAD_PRIORITY,
3973 .cra_ctxsize = sizeof(struct chcr_context) +
3974 sizeof(struct chcr_aead_ctx) +
3975 sizeof(struct chcr_authenc_ctx),
3976
3977 },
3978 .ivsize = CTR_RFC3686_IV_SIZE,
3979 .maxauthsize = SHA384_DIGEST_SIZE,
3980 .setkey = chcr_authenc_setkey,
3981 .setauthsize = chcr_authenc_setauthsize,
3982 }
3983 },
3984 {
3985 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
3986 .is_registered = 0,
3987 .alg.aead = {
3988 .base = {
3989 .cra_name = "authenc(hmac(sha512),rfc3686(ctr(aes)))",
3990 .cra_driver_name =
3991 "authenc-hmac-sha512-rfc3686-ctr-aes-chcr",
3992 .cra_blocksize = 1,
3993 .cra_priority = CHCR_AEAD_PRIORITY,
3994 .cra_ctxsize = sizeof(struct chcr_context) +
3995 sizeof(struct chcr_aead_ctx) +
3996 sizeof(struct chcr_authenc_ctx),
3997
3998 },
3999 .ivsize = CTR_RFC3686_IV_SIZE,
4000 .maxauthsize = SHA512_DIGEST_SIZE,
4001 .setkey = chcr_authenc_setkey,
4002 .setauthsize = chcr_authenc_setauthsize,
4003 }
4004 },
4005 {
4006 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_NULL,
4007 .is_registered = 0,
4008 .alg.aead = {
4009 .base = {
4010 .cra_name = "authenc(digest_null,rfc3686(ctr(aes)))",
4011 .cra_driver_name =
4012 "authenc-digest_null-rfc3686-ctr-aes-chcr",
4013 .cra_blocksize = 1,
4014 .cra_priority = CHCR_AEAD_PRIORITY,
4015 .cra_ctxsize = sizeof(struct chcr_context) +
4016 sizeof(struct chcr_aead_ctx) +
4017 sizeof(struct chcr_authenc_ctx),
4018
4019 },
4020 .ivsize = CTR_RFC3686_IV_SIZE,
4021 .maxauthsize = 0,
4022 .setkey = chcr_aead_digest_null_setkey,
4023 .setauthsize = chcr_authenc_null_setauthsize,
4024 }
4025 },
4026
324429d7
HS		 4027};
4028
4029/*
4030 * chcr_unregister_alg - Deregister crypto algorithms with
4031 * kernel framework.
4032 */
4033static int chcr_unregister_alg(void)
4034{
4035 int i;
4036
4037 for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
4038 switch (driver_algs[i].type & CRYPTO_ALG_TYPE_MASK) {
4039 case CRYPTO_ALG_TYPE_ABLKCIPHER:
4040 if (driver_algs[i].is_registered)
4041 crypto_unregister_alg(
4042 &driver_algs[i].alg.crypto);
4043 break;
2debd332
HJ		 4044 case CRYPTO_ALG_TYPE_AEAD:
4045 if (driver_algs[i].is_registered)
4046 crypto_unregister_aead(
4047 &driver_algs[i].alg.aead);
4048 break;
324429d7
HS		 4049 case CRYPTO_ALG_TYPE_AHASH:
4050 if (driver_algs[i].is_registered)
4051 crypto_unregister_ahash(
4052 &driver_algs[i].alg.hash);
4053 break;
4054 }
4055 driver_algs[i].is_registered = 0;
4056 }
4057 return 0;
4058}
4059
4060#define SZ_AHASH_CTX sizeof(struct chcr_context)
4061#define SZ_AHASH_H_CTX (sizeof(struct chcr_context) + sizeof(struct hmac_ctx))
4062#define SZ_AHASH_REQ_CTX sizeof(struct chcr_ahash_req_ctx)
4063#define AHASH_CRA_FLAGS (CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_ASYNC)
4064
4065/*
4066 * chcr_register_alg - Register crypto algorithms with kernel framework.
4067 */
4068static int chcr_register_alg(void)
4069{
4070 struct crypto_alg ai;
4071 struct ahash_alg *a_hash;
4072 int err = 0, i;
4073 char *name = NULL;
4074
4075 for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
4076 if (driver_algs[i].is_registered)
4077 continue;
4078 switch (driver_algs[i].type & CRYPTO_ALG_TYPE_MASK) {
4079 case CRYPTO_ALG_TYPE_ABLKCIPHER:
b8fd1f41
HJ		 4080 driver_algs[i].alg.crypto.cra_priority =
4081 CHCR_CRA_PRIORITY;
4082 driver_algs[i].alg.crypto.cra_module = THIS_MODULE;
4083 driver_algs[i].alg.crypto.cra_flags =
4084 CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC |
4085 CRYPTO_ALG_NEED_FALLBACK;
4086 driver_algs[i].alg.crypto.cra_ctxsize =
4087 sizeof(struct chcr_context) +
4088 sizeof(struct ablk_ctx);
4089 driver_algs[i].alg.crypto.cra_alignmask = 0;
4090 driver_algs[i].alg.crypto.cra_type =
4091 &crypto_ablkcipher_type;
324429d7
HS		 4092 err = crypto_register_alg(&driver_algs[i].alg.crypto);
4093 name = driver_algs[i].alg.crypto.cra_driver_name;
4094 break;
2debd332 4095 case CRYPTO_ALG_TYPE_AEAD:
2debd332 4096 driver_algs[i].alg.aead.base.cra_flags =
0e93708d
HJ		 4097 CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC |
4098 CRYPTO_ALG_NEED_FALLBACK;
2debd332
HJ		 4099 driver_algs[i].alg.aead.encrypt = chcr_aead_encrypt;
4100 driver_algs[i].alg.aead.decrypt = chcr_aead_decrypt;
4101 driver_algs[i].alg.aead.init = chcr_aead_cra_init;
4102 driver_algs[i].alg.aead.exit = chcr_aead_cra_exit;
4103 driver_algs[i].alg.aead.base.cra_module = THIS_MODULE;
4104 err = crypto_register_aead(&driver_algs[i].alg.aead);
4105 name = driver_algs[i].alg.aead.base.cra_driver_name;
4106 break;
324429d7
HS		 4107 case CRYPTO_ALG_TYPE_AHASH:
4108 a_hash = &driver_algs[i].alg.hash;
4109 a_hash->update = chcr_ahash_update;
4110 a_hash->final = chcr_ahash_final;
4111 a_hash->finup = chcr_ahash_finup;
4112 a_hash->digest = chcr_ahash_digest;
4113 a_hash->export = chcr_ahash_export;
4114 a_hash->import = chcr_ahash_import;
4115 a_hash->halg.statesize = SZ_AHASH_REQ_CTX;
4116 a_hash->halg.base.cra_priority = CHCR_CRA_PRIORITY;
4117 a_hash->halg.base.cra_module = THIS_MODULE;
4118 a_hash->halg.base.cra_flags = AHASH_CRA_FLAGS;
4119 a_hash->halg.base.cra_alignmask = 0;
4120 a_hash->halg.base.cra_exit = NULL;
4121 a_hash->halg.base.cra_type = &crypto_ahash_type;
4122
4123 if (driver_algs[i].type == CRYPTO_ALG_TYPE_HMAC) {
4124 a_hash->halg.base.cra_init = chcr_hmac_cra_init;
4125 a_hash->halg.base.cra_exit = chcr_hmac_cra_exit;
4126 a_hash->init = chcr_hmac_init;
4127 a_hash->setkey = chcr_ahash_setkey;
4128 a_hash->halg.base.cra_ctxsize = SZ_AHASH_H_CTX;
4129 } else {
4130 a_hash->init = chcr_sha_init;
4131 a_hash->halg.base.cra_ctxsize = SZ_AHASH_CTX;
4132 a_hash->halg.base.cra_init = chcr_sha_cra_init;
4133 }
4134 err = crypto_register_ahash(&driver_algs[i].alg.hash);
4135 ai = driver_algs[i].alg.hash.halg.base;
4136 name = ai.cra_driver_name;
4137 break;
4138 }
4139 if (err) {
4140 pr_err("chcr : %s : Algorithm registration failed\n",
4141 name);
4142 goto register_err;
4143 } else {
4144 driver_algs[i].is_registered = 1;
4145 }
4146 }
4147 return 0;
4148
4149register_err:
4150 chcr_unregister_alg();
4151 return err;
4152}
4153
4154/*
4155 * start_crypto - Register the crypto algorithms.
4156 * This should called once when the first device comesup. After this
4157 * kernel will start calling driver APIs for crypto operations.
4158 */
4159int start_crypto(void)
4160{
4161 return chcr_register_alg();
4162}
4163
4164/*
4165 * stop_crypto - Deregister all the crypto algorithms with kernel.
4166 * This should be called once when the last device goes down. After this
4167 * kernel will not call the driver API for crypto operations.
4168 */
4169int stop_crypto(void)
4170{
4171 chcr_unregister_alg();
4172 return 0;
4173}
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