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Merge tag 'driver-core-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git...
[mirror_ubuntu-hirsute-kernel.git] / drivers / crypto / chelsio / chcr_algo.c
1 /*
2 * This file is part of the Chelsio T6 Crypto driver for Linux.
3 *
4 * Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved.
5 *
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer.
19 *
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * SOFTWARE.
33 *
34 * Written and Maintained by:
35 * Manoj Malviya (manojmalviya@chelsio.com)
36 * Atul Gupta (atul.gupta@chelsio.com)
37 * Jitendra Lulla (jlulla@chelsio.com)
38 * Yeshaswi M R Gowda (yeshaswi@chelsio.com)
39 * Harsh Jain (harsh@chelsio.com)
40 */
41
42 #define pr_fmt(fmt) "chcr:" fmt
43
44 #include <linux/kernel.h>
45 #include <linux/module.h>
46 #include <linux/crypto.h>
47 #include <linux/skbuff.h>
48 #include <linux/rtnetlink.h>
49 #include <linux/highmem.h>
50 #include <linux/scatterlist.h>
51
52 #include <crypto/aes.h>
53 #include <crypto/algapi.h>
54 #include <crypto/hash.h>
55 #include <crypto/gcm.h>
56 #include <crypto/sha.h>
57 #include <crypto/authenc.h>
58 #include <crypto/ctr.h>
59 #include <crypto/gf128mul.h>
60 #include <crypto/internal/aead.h>
61 #include <crypto/null.h>
62 #include <crypto/internal/skcipher.h>
63 #include <crypto/aead.h>
64 #include <crypto/scatterwalk.h>
65 #include <crypto/internal/hash.h>
66
67 #include "t4fw_api.h"
68 #include "t4_msg.h"
69 #include "chcr_core.h"
70 #include "chcr_algo.h"
71 #include "chcr_crypto.h"
72
73 #define IV AES_BLOCK_SIZE
74
75 static unsigned int sgl_ent_len[] = {
76 0, 0, 16, 24, 40, 48, 64, 72, 88,
77 96, 112, 120, 136, 144, 160, 168, 184,
78 192, 208, 216, 232, 240, 256, 264, 280,
79 288, 304, 312, 328, 336, 352, 360, 376
80 };
81
82 static unsigned int dsgl_ent_len[] = {
83 0, 32, 32, 48, 48, 64, 64, 80, 80,
84 112, 112, 128, 128, 144, 144, 160, 160,
85 192, 192, 208, 208, 224, 224, 240, 240,
86 272, 272, 288, 288, 304, 304, 320, 320
87 };
88
89 static u32 round_constant[11] = {
90 0x01000000, 0x02000000, 0x04000000, 0x08000000,
91 0x10000000, 0x20000000, 0x40000000, 0x80000000,
92 0x1B000000, 0x36000000, 0x6C000000
93 };
94
95 static int chcr_handle_cipher_resp(struct skcipher_request *req,
96 unsigned char *input, int err);
97
98 static inline struct chcr_aead_ctx *AEAD_CTX(struct chcr_context *ctx)
99 {
100 return ctx->crypto_ctx->aeadctx;
101 }
102
103 static inline struct ablk_ctx *ABLK_CTX(struct chcr_context *ctx)
104 {
105 return ctx->crypto_ctx->ablkctx;
106 }
107
108 static inline struct hmac_ctx *HMAC_CTX(struct chcr_context *ctx)
109 {
110 return ctx->crypto_ctx->hmacctx;
111 }
112
113 static inline struct chcr_gcm_ctx *GCM_CTX(struct chcr_aead_ctx *gctx)
114 {
115 return gctx->ctx->gcm;
116 }
117
118 static inline struct chcr_authenc_ctx *AUTHENC_CTX(struct chcr_aead_ctx *gctx)
119 {
120 return gctx->ctx->authenc;
121 }
122
123 static inline struct uld_ctx *ULD_CTX(struct chcr_context *ctx)
124 {
125 return container_of(ctx->dev, struct uld_ctx, dev);
126 }
127
128 static inline int is_ofld_imm(const struct sk_buff *skb)
129 {
130 return (skb->len <= SGE_MAX_WR_LEN);
131 }
132
133 static inline void chcr_init_hctx_per_wr(struct chcr_ahash_req_ctx *reqctx)
134 {
135 memset(&reqctx->hctx_wr, 0, sizeof(struct chcr_hctx_per_wr));
136 }
137
138 static int sg_nents_xlen(struct scatterlist *sg, unsigned int reqlen,
139 unsigned int entlen,
140 unsigned int skip)
141 {
142 int nents = 0;
143 unsigned int less;
144 unsigned int skip_len = 0;
145
146 while (sg && skip) {
147 if (sg_dma_len(sg) <= skip) {
148 skip -= sg_dma_len(sg);
149 skip_len = 0;
150 sg = sg_next(sg);
151 } else {
152 skip_len = skip;
153 skip = 0;
154 }
155 }
156
157 while (sg && reqlen) {
158 less = min(reqlen, sg_dma_len(sg) - skip_len);
159 nents += DIV_ROUND_UP(less, entlen);
160 reqlen -= less;
161 skip_len = 0;
162 sg = sg_next(sg);
163 }
164 return nents;
165 }
166
167 static inline int get_aead_subtype(struct crypto_aead *aead)
168 {
169 struct aead_alg *alg = crypto_aead_alg(aead);
170 struct chcr_alg_template *chcr_crypto_alg =
171 container_of(alg, struct chcr_alg_template, alg.aead);
172 return chcr_crypto_alg->type & CRYPTO_ALG_SUB_TYPE_MASK;
173 }
174
175 void chcr_verify_tag(struct aead_request *req, u8 *input, int *err)
176 {
177 u8 temp[SHA512_DIGEST_SIZE];
178 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
179 int authsize = crypto_aead_authsize(tfm);
180 struct cpl_fw6_pld *fw6_pld;
181 int cmp = 0;
182
183 fw6_pld = (struct cpl_fw6_pld *)input;
184 if ((get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106) ||
185 (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_GCM)) {
186 cmp = crypto_memneq(&fw6_pld->data[2], (fw6_pld + 1), authsize);
187 } else {
188
189 sg_pcopy_to_buffer(req->src, sg_nents(req->src), temp,
190 authsize, req->assoclen +
191 req->cryptlen - authsize);
192 cmp = crypto_memneq(temp, (fw6_pld + 1), authsize);
193 }
194 if (cmp)
195 *err = -EBADMSG;
196 else
197 *err = 0;
198 }
199
200 static int chcr_inc_wrcount(struct chcr_dev *dev)
201 {
202 if (dev->state == CHCR_DETACH)
203 return 1;
204 atomic_inc(&dev->inflight);
205 return 0;
206 }
207
208 static inline void chcr_dec_wrcount(struct chcr_dev *dev)
209 {
210 atomic_dec(&dev->inflight);
211 }
212
213 static inline int chcr_handle_aead_resp(struct aead_request *req,
214 unsigned char *input,
215 int err)
216 {
217 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
218 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
219 struct chcr_dev *dev = a_ctx(tfm)->dev;
220
221 chcr_aead_common_exit(req);
222 if (reqctx->verify == VERIFY_SW) {
223 chcr_verify_tag(req, input, &err);
224 reqctx->verify = VERIFY_HW;
225 }
226 chcr_dec_wrcount(dev);
227 req->base.complete(&req->base, err);
228
229 return err;
230 }
231
232 static void get_aes_decrypt_key(unsigned char *dec_key,
233 const unsigned char *key,
234 unsigned int keylength)
235 {
236 u32 temp;
237 u32 w_ring[MAX_NK];
238 int i, j, k;
239 u8 nr, nk;
240
241 switch (keylength) {
242 case AES_KEYLENGTH_128BIT:
243 nk = KEYLENGTH_4BYTES;
244 nr = NUMBER_OF_ROUNDS_10;
245 break;
246 case AES_KEYLENGTH_192BIT:
247 nk = KEYLENGTH_6BYTES;
248 nr = NUMBER_OF_ROUNDS_12;
249 break;
250 case AES_KEYLENGTH_256BIT:
251 nk = KEYLENGTH_8BYTES;
252 nr = NUMBER_OF_ROUNDS_14;
253 break;
254 default:
255 return;
256 }
257 for (i = 0; i < nk; i++)
258 w_ring[i] = get_unaligned_be32(&key[i * 4]);
259
260 i = 0;
261 temp = w_ring[nk - 1];
262 while (i + nk < (nr + 1) * 4) {
263 if (!(i % nk)) {
264 /* RotWord(temp) */
265 temp = (temp << 8) | (temp >> 24);
266 temp = aes_ks_subword(temp);
267 temp ^= round_constant[i / nk];
268 } else if (nk == 8 && (i % 4 == 0)) {
269 temp = aes_ks_subword(temp);
270 }
271 w_ring[i % nk] ^= temp;
272 temp = w_ring[i % nk];
273 i++;
274 }
275 i--;
276 for (k = 0, j = i % nk; k < nk; k++) {
277 put_unaligned_be32(w_ring[j], &dec_key[k * 4]);
278 j--;
279 if (j < 0)
280 j += nk;
281 }
282 }
283
284 static struct crypto_shash *chcr_alloc_shash(unsigned int ds)
285 {
286 struct crypto_shash *base_hash = ERR_PTR(-EINVAL);
287
288 switch (ds) {
289 case SHA1_DIGEST_SIZE:
290 base_hash = crypto_alloc_shash("sha1", 0, 0);
291 break;
292 case SHA224_DIGEST_SIZE:
293 base_hash = crypto_alloc_shash("sha224", 0, 0);
294 break;
295 case SHA256_DIGEST_SIZE:
296 base_hash = crypto_alloc_shash("sha256", 0, 0);
297 break;
298 case SHA384_DIGEST_SIZE:
299 base_hash = crypto_alloc_shash("sha384", 0, 0);
300 break;
301 case SHA512_DIGEST_SIZE:
302 base_hash = crypto_alloc_shash("sha512", 0, 0);
303 break;
304 }
305
306 return base_hash;
307 }
308
309 static int chcr_compute_partial_hash(struct shash_desc *desc,
310 char *iopad, char *result_hash,
311 int digest_size)
312 {
313 struct sha1_state sha1_st;
314 struct sha256_state sha256_st;
315 struct sha512_state sha512_st;
316 int error;
317
318 if (digest_size == SHA1_DIGEST_SIZE) {
319 error = crypto_shash_init(desc) ?:
320 crypto_shash_update(desc, iopad, SHA1_BLOCK_SIZE) ?:
321 crypto_shash_export(desc, (void *)&sha1_st);
322 memcpy(result_hash, sha1_st.state, SHA1_DIGEST_SIZE);
323 } else if (digest_size == SHA224_DIGEST_SIZE) {
324 error = crypto_shash_init(desc) ?:
325 crypto_shash_update(desc, iopad, SHA256_BLOCK_SIZE) ?:
326 crypto_shash_export(desc, (void *)&sha256_st);
327 memcpy(result_hash, sha256_st.state, SHA256_DIGEST_SIZE);
328
329 } else if (digest_size == SHA256_DIGEST_SIZE) {
330 error = crypto_shash_init(desc) ?:
331 crypto_shash_update(desc, iopad, SHA256_BLOCK_SIZE) ?:
332 crypto_shash_export(desc, (void *)&sha256_st);
333 memcpy(result_hash, sha256_st.state, SHA256_DIGEST_SIZE);
334
335 } else if (digest_size == SHA384_DIGEST_SIZE) {
336 error = crypto_shash_init(desc) ?:
337 crypto_shash_update(desc, iopad, SHA512_BLOCK_SIZE) ?:
338 crypto_shash_export(desc, (void *)&sha512_st);
339 memcpy(result_hash, sha512_st.state, SHA512_DIGEST_SIZE);
340
341 } else if (digest_size == SHA512_DIGEST_SIZE) {
342 error = crypto_shash_init(desc) ?:
343 crypto_shash_update(desc, iopad, SHA512_BLOCK_SIZE) ?:
344 crypto_shash_export(desc, (void *)&sha512_st);
345 memcpy(result_hash, sha512_st.state, SHA512_DIGEST_SIZE);
346 } else {
347 error = -EINVAL;
348 pr_err("Unknown digest size %d\n", digest_size);
349 }
350 return error;
351 }
352
353 static void chcr_change_order(char *buf, int ds)
354 {
355 int i;
356
357 if (ds == SHA512_DIGEST_SIZE) {
358 for (i = 0; i < (ds / sizeof(u64)); i++)
359 *((__be64 *)buf + i) =
360 cpu_to_be64(*((u64 *)buf + i));
361 } else {
362 for (i = 0; i < (ds / sizeof(u32)); i++)
363 *((__be32 *)buf + i) =
364 cpu_to_be32(*((u32 *)buf + i));
365 }
366 }
367
368 static inline int is_hmac(struct crypto_tfm *tfm)
369 {
370 struct crypto_alg *alg = tfm->__crt_alg;
371 struct chcr_alg_template *chcr_crypto_alg =
372 container_of(__crypto_ahash_alg(alg), struct chcr_alg_template,
373 alg.hash);
374 if (chcr_crypto_alg->type == CRYPTO_ALG_TYPE_HMAC)
375 return 1;
376 return 0;
377 }
378
379 static inline void dsgl_walk_init(struct dsgl_walk *walk,
380 struct cpl_rx_phys_dsgl *dsgl)
381 {
382 walk->dsgl = dsgl;
383 walk->nents = 0;
384 walk->to = (struct phys_sge_pairs *)(dsgl + 1);
385 }
386
387 static inline void dsgl_walk_end(struct dsgl_walk *walk, unsigned short qid,
388 int pci_chan_id)
389 {
390 struct cpl_rx_phys_dsgl *phys_cpl;
391
392 phys_cpl = walk->dsgl;
393
394 phys_cpl->op_to_tid = htonl(CPL_RX_PHYS_DSGL_OPCODE_V(CPL_RX_PHYS_DSGL)
395 | CPL_RX_PHYS_DSGL_ISRDMA_V(0));
396 phys_cpl->pcirlxorder_to_noofsgentr =
397 htonl(CPL_RX_PHYS_DSGL_PCIRLXORDER_V(0) |
398 CPL_RX_PHYS_DSGL_PCINOSNOOP_V(0) |
399 CPL_RX_PHYS_DSGL_PCITPHNTENB_V(0) |
400 CPL_RX_PHYS_DSGL_PCITPHNT_V(0) |
401 CPL_RX_PHYS_DSGL_DCAID_V(0) |
402 CPL_RX_PHYS_DSGL_NOOFSGENTR_V(walk->nents));
403 phys_cpl->rss_hdr_int.opcode = CPL_RX_PHYS_ADDR;
404 phys_cpl->rss_hdr_int.qid = htons(qid);
405 phys_cpl->rss_hdr_int.hash_val = 0;
406 phys_cpl->rss_hdr_int.channel = pci_chan_id;
407 }
408
409 static inline void dsgl_walk_add_page(struct dsgl_walk *walk,
410 size_t size,
411 dma_addr_t addr)
412 {
413 int j;
414
415 if (!size)
416 return;
417 j = walk->nents;
418 walk->to->len[j % 8] = htons(size);
419 walk->to->addr[j % 8] = cpu_to_be64(addr);
420 j++;
421 if ((j % 8) == 0)
422 walk->to++;
423 walk->nents = j;
424 }
425
426 static void dsgl_walk_add_sg(struct dsgl_walk *walk,
427 struct scatterlist *sg,
428 unsigned int slen,
429 unsigned int skip)
430 {
431 int skip_len = 0;
432 unsigned int left_size = slen, len = 0;
433 unsigned int j = walk->nents;
434 int offset, ent_len;
435
436 if (!slen)
437 return;
438 while (sg && skip) {
439 if (sg_dma_len(sg) <= skip) {
440 skip -= sg_dma_len(sg);
441 skip_len = 0;
442 sg = sg_next(sg);
443 } else {
444 skip_len = skip;
445 skip = 0;
446 }
447 }
448
449 while (left_size && sg) {
450 len = min_t(u32, left_size, sg_dma_len(sg) - skip_len);
451 offset = 0;
452 while (len) {
453 ent_len = min_t(u32, len, CHCR_DST_SG_SIZE);
454 walk->to->len[j % 8] = htons(ent_len);
455 walk->to->addr[j % 8] = cpu_to_be64(sg_dma_address(sg) +
456 offset + skip_len);
457 offset += ent_len;
458 len -= ent_len;
459 j++;
460 if ((j % 8) == 0)
461 walk->to++;
462 }
463 walk->last_sg = sg;
464 walk->last_sg_len = min_t(u32, left_size, sg_dma_len(sg) -
465 skip_len) + skip_len;
466 left_size -= min_t(u32, left_size, sg_dma_len(sg) - skip_len);
467 skip_len = 0;
468 sg = sg_next(sg);
469 }
470 walk->nents = j;
471 }
472
473 static inline void ulptx_walk_init(struct ulptx_walk *walk,
474 struct ulptx_sgl *ulp)
475 {
476 walk->sgl = ulp;
477 walk->nents = 0;
478 walk->pair_idx = 0;
479 walk->pair = ulp->sge;
480 walk->last_sg = NULL;
481 walk->last_sg_len = 0;
482 }
483
484 static inline void ulptx_walk_end(struct ulptx_walk *walk)
485 {
486 walk->sgl->cmd_nsge = htonl(ULPTX_CMD_V(ULP_TX_SC_DSGL) |
487 ULPTX_NSGE_V(walk->nents));
488 }
489
490
491 static inline void ulptx_walk_add_page(struct ulptx_walk *walk,
492 size_t size,
493 dma_addr_t addr)
494 {
495 if (!size)
496 return;
497
498 if (walk->nents == 0) {
499 walk->sgl->len0 = cpu_to_be32(size);
500 walk->sgl->addr0 = cpu_to_be64(addr);
501 } else {
502 walk->pair->addr[walk->pair_idx] = cpu_to_be64(addr);
503 walk->pair->len[walk->pair_idx] = cpu_to_be32(size);
504 walk->pair_idx = !walk->pair_idx;
505 if (!walk->pair_idx)
506 walk->pair++;
507 }
508 walk->nents++;
509 }
510
511 static void ulptx_walk_add_sg(struct ulptx_walk *walk,
512 struct scatterlist *sg,
513 unsigned int len,
514 unsigned int skip)
515 {
516 int small;
517 int skip_len = 0;
518 unsigned int sgmin;
519
520 if (!len)
521 return;
522 while (sg && skip) {
523 if (sg_dma_len(sg) <= skip) {
524 skip -= sg_dma_len(sg);
525 skip_len = 0;
526 sg = sg_next(sg);
527 } else {
528 skip_len = skip;
529 skip = 0;
530 }
531 }
532 WARN(!sg, "SG should not be null here\n");
533 if (sg && (walk->nents == 0)) {
534 small = min_t(unsigned int, sg_dma_len(sg) - skip_len, len);
535 sgmin = min_t(unsigned int, small, CHCR_SRC_SG_SIZE);
536 walk->sgl->len0 = cpu_to_be32(sgmin);
537 walk->sgl->addr0 = cpu_to_be64(sg_dma_address(sg) + skip_len);
538 walk->nents++;
539 len -= sgmin;
540 walk->last_sg = sg;
541 walk->last_sg_len = sgmin + skip_len;
542 skip_len += sgmin;
543 if (sg_dma_len(sg) == skip_len) {
544 sg = sg_next(sg);
545 skip_len = 0;
546 }
547 }
548
549 while (sg && len) {
550 small = min(sg_dma_len(sg) - skip_len, len);
551 sgmin = min_t(unsigned int, small, CHCR_SRC_SG_SIZE);
552 walk->pair->len[walk->pair_idx] = cpu_to_be32(sgmin);
553 walk->pair->addr[walk->pair_idx] =
554 cpu_to_be64(sg_dma_address(sg) + skip_len);
555 walk->pair_idx = !walk->pair_idx;
556 walk->nents++;
557 if (!walk->pair_idx)
558 walk->pair++;
559 len -= sgmin;
560 skip_len += sgmin;
561 walk->last_sg = sg;
562 walk->last_sg_len = skip_len;
563 if (sg_dma_len(sg) == skip_len) {
564 sg = sg_next(sg);
565 skip_len = 0;
566 }
567 }
568 }
569
570 static inline int get_cryptoalg_subtype(struct crypto_skcipher *tfm)
571 {
572 struct skcipher_alg *alg = crypto_skcipher_alg(tfm);
573 struct chcr_alg_template *chcr_crypto_alg =
574 container_of(alg, struct chcr_alg_template, alg.skcipher);
575
576 return chcr_crypto_alg->type & CRYPTO_ALG_SUB_TYPE_MASK;
577 }
578
579 static int cxgb4_is_crypto_q_full(struct net_device *dev, unsigned int idx)
580 {
581 struct adapter *adap = netdev2adap(dev);
582 struct sge_uld_txq_info *txq_info =
583 adap->sge.uld_txq_info[CXGB4_TX_CRYPTO];
584 struct sge_uld_txq *txq;
585 int ret = 0;
586
587 local_bh_disable();
588 txq = &txq_info->uldtxq[idx];
589 spin_lock(&txq->sendq.lock);
590 if (txq->full)
591 ret = -1;
592 spin_unlock(&txq->sendq.lock);
593 local_bh_enable();
594 return ret;
595 }
596
597 static int generate_copy_rrkey(struct ablk_ctx *ablkctx,
598 struct _key_ctx *key_ctx)
599 {
600 if (ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC) {
601 memcpy(key_ctx->key, ablkctx->rrkey, ablkctx->enckey_len);
602 } else {
603 memcpy(key_ctx->key,
604 ablkctx->key + (ablkctx->enckey_len >> 1),
605 ablkctx->enckey_len >> 1);
606 memcpy(key_ctx->key + (ablkctx->enckey_len >> 1),
607 ablkctx->rrkey, ablkctx->enckey_len >> 1);
608 }
609 return 0;
610 }
611
612 static int chcr_hash_ent_in_wr(struct scatterlist *src,
613 unsigned int minsg,
614 unsigned int space,
615 unsigned int srcskip)
616 {
617 int srclen = 0;
618 int srcsg = minsg;
619 int soffset = 0, sless;
620
621 if (sg_dma_len(src) == srcskip) {
622 src = sg_next(src);
623 srcskip = 0;
624 }
625 while (src && space > (sgl_ent_len[srcsg + 1])) {
626 sless = min_t(unsigned int, sg_dma_len(src) - soffset - srcskip,
627 CHCR_SRC_SG_SIZE);
628 srclen += sless;
629 soffset += sless;
630 srcsg++;
631 if (sg_dma_len(src) == (soffset + srcskip)) {
632 src = sg_next(src);
633 soffset = 0;
634 srcskip = 0;
635 }
636 }
637 return srclen;
638 }
639
640 static int chcr_sg_ent_in_wr(struct scatterlist *src,
641 struct scatterlist *dst,
642 unsigned int minsg,
643 unsigned int space,
644 unsigned int srcskip,
645 unsigned int dstskip)
646 {
647 int srclen = 0, dstlen = 0;
648 int srcsg = minsg, dstsg = minsg;
649 int offset = 0, soffset = 0, less, sless = 0;
650
651 if (sg_dma_len(src) == srcskip) {
652 src = sg_next(src);
653 srcskip = 0;
654 }
655 if (sg_dma_len(dst) == dstskip) {
656 dst = sg_next(dst);
657 dstskip = 0;
658 }
659
660 while (src && dst &&
661 space > (sgl_ent_len[srcsg + 1] + dsgl_ent_len[dstsg])) {
662 sless = min_t(unsigned int, sg_dma_len(src) - srcskip - soffset,
663 CHCR_SRC_SG_SIZE);
664 srclen += sless;
665 srcsg++;
666 offset = 0;
667 while (dst && ((dstsg + 1) <= MAX_DSGL_ENT) &&
668 space > (sgl_ent_len[srcsg] + dsgl_ent_len[dstsg + 1])) {
669 if (srclen <= dstlen)
670 break;
671 less = min_t(unsigned int, sg_dma_len(dst) - offset -
672 dstskip, CHCR_DST_SG_SIZE);
673 dstlen += less;
674 offset += less;
675 if ((offset + dstskip) == sg_dma_len(dst)) {
676 dst = sg_next(dst);
677 offset = 0;
678 }
679 dstsg++;
680 dstskip = 0;
681 }
682 soffset += sless;
683 if ((soffset + srcskip) == sg_dma_len(src)) {
684 src = sg_next(src);
685 srcskip = 0;
686 soffset = 0;
687 }
688
689 }
690 return min(srclen, dstlen);
691 }
692
693 static int chcr_cipher_fallback(struct crypto_sync_skcipher *cipher,
694 u32 flags,
695 struct scatterlist *src,
696 struct scatterlist *dst,
697 unsigned int nbytes,
698 u8 *iv,
699 unsigned short op_type)
700 {
701 int err;
702
703 SYNC_SKCIPHER_REQUEST_ON_STACK(subreq, cipher);
704
705 skcipher_request_set_sync_tfm(subreq, cipher);
706 skcipher_request_set_callback(subreq, flags, NULL, NULL);
707 skcipher_request_set_crypt(subreq, src, dst,
708 nbytes, iv);
709
710 err = op_type ? crypto_skcipher_decrypt(subreq) :
711 crypto_skcipher_encrypt(subreq);
712 skcipher_request_zero(subreq);
713
714 return err;
715
716 }
717
718 static inline int get_qidxs(struct crypto_async_request *req,
719 unsigned int *txqidx, unsigned int *rxqidx)
720 {
721 struct crypto_tfm *tfm = req->tfm;
722 int ret = 0;
723
724 switch (tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK) {
725 case CRYPTO_ALG_TYPE_AEAD:
726 {
727 struct aead_request *aead_req =
728 container_of(req, struct aead_request, base);
729 struct chcr_aead_reqctx *reqctx = aead_request_ctx(aead_req);
730 *txqidx = reqctx->txqidx;
731 *rxqidx = reqctx->rxqidx;
732 break;
733 }
734 case CRYPTO_ALG_TYPE_SKCIPHER:
735 {
736 struct skcipher_request *sk_req =
737 container_of(req, struct skcipher_request, base);
738 struct chcr_skcipher_req_ctx *reqctx =
739 skcipher_request_ctx(sk_req);
740 *txqidx = reqctx->txqidx;
741 *rxqidx = reqctx->rxqidx;
742 break;
743 }
744 case CRYPTO_ALG_TYPE_AHASH:
745 {
746 struct ahash_request *ahash_req =
747 container_of(req, struct ahash_request, base);
748 struct chcr_ahash_req_ctx *reqctx =
749 ahash_request_ctx(ahash_req);
750 *txqidx = reqctx->txqidx;
751 *rxqidx = reqctx->rxqidx;
752 break;
753 }
754 default:
755 ret = -EINVAL;
756 /* should never get here */
757 BUG();
758 break;
759 }
760 return ret;
761 }
762
763 static inline void create_wreq(struct chcr_context *ctx,
764 struct chcr_wr *chcr_req,
765 struct crypto_async_request *req,
766 unsigned int imm,
767 int hash_sz,
768 unsigned int len16,
769 unsigned int sc_len,
770 unsigned int lcb)
771 {
772 struct uld_ctx *u_ctx = ULD_CTX(ctx);
773 unsigned int tx_channel_id, rx_channel_id;
774 unsigned int txqidx = 0, rxqidx = 0;
775 unsigned int qid, fid;
776
777 get_qidxs(req, &txqidx, &rxqidx);
778 qid = u_ctx->lldi.rxq_ids[rxqidx];
779 fid = u_ctx->lldi.rxq_ids[0];
780 tx_channel_id = txqidx / ctx->txq_perchan;
781 rx_channel_id = rxqidx / ctx->rxq_perchan;
782
783
784 chcr_req->wreq.op_to_cctx_size = FILL_WR_OP_CCTX_SIZE;
785 chcr_req->wreq.pld_size_hash_size =
786 htonl(FW_CRYPTO_LOOKASIDE_WR_HASH_SIZE_V(hash_sz));
787 chcr_req->wreq.len16_pkd =
788 htonl(FW_CRYPTO_LOOKASIDE_WR_LEN16_V(DIV_ROUND_UP(len16, 16)));
789 chcr_req->wreq.cookie = cpu_to_be64((uintptr_t)req);
790 chcr_req->wreq.rx_chid_to_rx_q_id = FILL_WR_RX_Q_ID(rx_channel_id, qid,
791 !!lcb, txqidx);
792
793 chcr_req->ulptx.cmd_dest = FILL_ULPTX_CMD_DEST(tx_channel_id, fid);
794 chcr_req->ulptx.len = htonl((DIV_ROUND_UP(len16, 16) -
795 ((sizeof(chcr_req->wreq)) >> 4)));
796 chcr_req->sc_imm.cmd_more = FILL_CMD_MORE(!imm);
797 chcr_req->sc_imm.len = cpu_to_be32(sizeof(struct cpl_tx_sec_pdu) +
798 sizeof(chcr_req->key_ctx) + sc_len);
799 }
800
801 /**
802 * create_cipher_wr - form the WR for cipher operations
803 * @req: cipher req.
804 * @ctx: crypto driver context of the request.
805 * @qid: ingress qid where response of this WR should be received.
806 * @op_type: encryption or decryption
807 */
808 static struct sk_buff *create_cipher_wr(struct cipher_wr_param *wrparam)
809 {
810 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(wrparam->req);
811 struct chcr_context *ctx = c_ctx(tfm);
812 struct ablk_ctx *ablkctx = ABLK_CTX(ctx);
813 struct sk_buff *skb = NULL;
814 struct chcr_wr *chcr_req;
815 struct cpl_rx_phys_dsgl *phys_cpl;
816 struct ulptx_sgl *ulptx;
817 struct chcr_skcipher_req_ctx *reqctx =
818 skcipher_request_ctx(wrparam->req);
819 unsigned int temp = 0, transhdr_len, dst_size;
820 int error;
821 int nents;
822 unsigned int kctx_len;
823 gfp_t flags = wrparam->req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ?
824 GFP_KERNEL : GFP_ATOMIC;
825 struct adapter *adap = padap(ctx->dev);
826 unsigned int rx_channel_id = reqctx->rxqidx / ctx->rxq_perchan;
827
828 nents = sg_nents_xlen(reqctx->dstsg, wrparam->bytes, CHCR_DST_SG_SIZE,
829 reqctx->dst_ofst);
830 dst_size = get_space_for_phys_dsgl(nents);
831 kctx_len = roundup(ablkctx->enckey_len, 16);
832 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
833 nents = sg_nents_xlen(reqctx->srcsg, wrparam->bytes,
834 CHCR_SRC_SG_SIZE, reqctx->src_ofst);
835 temp = reqctx->imm ? roundup(wrparam->bytes, 16) :
836 (sgl_len(nents) * 8);
837 transhdr_len += temp;
838 transhdr_len = roundup(transhdr_len, 16);
839 skb = alloc_skb(SGE_MAX_WR_LEN, flags);
840 if (!skb) {
841 error = -ENOMEM;
842 goto err;
843 }
844 chcr_req = __skb_put_zero(skb, transhdr_len);
845 chcr_req->sec_cpl.op_ivinsrtofst =
846 FILL_SEC_CPL_OP_IVINSR(rx_channel_id, 2, 1);
847
848 chcr_req->sec_cpl.pldlen = htonl(IV + wrparam->bytes);
849 chcr_req->sec_cpl.aadstart_cipherstop_hi =
850 FILL_SEC_CPL_CIPHERSTOP_HI(0, 0, IV + 1, 0);
851
852 chcr_req->sec_cpl.cipherstop_lo_authinsert =
853 FILL_SEC_CPL_AUTHINSERT(0, 0, 0, 0);
854 chcr_req->sec_cpl.seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(reqctx->op, 0,
855 ablkctx->ciph_mode,
856 0, 0, IV >> 1);
857 chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 0,
858 0, 1, dst_size);
859
860 chcr_req->key_ctx.ctx_hdr = ablkctx->key_ctx_hdr;
861 if ((reqctx->op == CHCR_DECRYPT_OP) &&
862 (!(get_cryptoalg_subtype(tfm) ==
863 CRYPTO_ALG_SUB_TYPE_CTR)) &&
864 (!(get_cryptoalg_subtype(tfm) ==
865 CRYPTO_ALG_SUB_TYPE_CTR_RFC3686))) {
866 generate_copy_rrkey(ablkctx, &chcr_req->key_ctx);
867 } else {
868 if ((ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC) ||
869 (ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CTR)) {
870 memcpy(chcr_req->key_ctx.key, ablkctx->key,
871 ablkctx->enckey_len);
872 } else {
873 memcpy(chcr_req->key_ctx.key, ablkctx->key +
874 (ablkctx->enckey_len >> 1),
875 ablkctx->enckey_len >> 1);
876 memcpy(chcr_req->key_ctx.key +
877 (ablkctx->enckey_len >> 1),
878 ablkctx->key,
879 ablkctx->enckey_len >> 1);
880 }
881 }
882 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
883 ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size);
884 chcr_add_cipher_src_ent(wrparam->req, ulptx, wrparam);
885 chcr_add_cipher_dst_ent(wrparam->req, phys_cpl, wrparam, wrparam->qid);
886
887 atomic_inc(&adap->chcr_stats.cipher_rqst);
888 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + kctx_len + IV
889 + (reqctx->imm ? (wrparam->bytes) : 0);
890 create_wreq(c_ctx(tfm), chcr_req, &(wrparam->req->base), reqctx->imm, 0,
891 transhdr_len, temp,
892 ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC);
893 reqctx->skb = skb;
894
895 if (reqctx->op && (ablkctx->ciph_mode ==
896 CHCR_SCMD_CIPHER_MODE_AES_CBC))
897 sg_pcopy_to_buffer(wrparam->req->src,
898 sg_nents(wrparam->req->src), wrparam->req->iv, 16,
899 reqctx->processed + wrparam->bytes - AES_BLOCK_SIZE);
900
901 return skb;
902 err:
903 return ERR_PTR(error);
904 }
905
906 static inline int chcr_keyctx_ck_size(unsigned int keylen)
907 {
908 int ck_size = 0;
909
910 if (keylen == AES_KEYSIZE_128)
911 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
912 else if (keylen == AES_KEYSIZE_192)
913 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
914 else if (keylen == AES_KEYSIZE_256)
915 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
916 else
917 ck_size = 0;
918
919 return ck_size;
920 }
921 static int chcr_cipher_fallback_setkey(struct crypto_skcipher *cipher,
922 const u8 *key,
923 unsigned int keylen)
924 {
925 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
926
927 crypto_sync_skcipher_clear_flags(ablkctx->sw_cipher,
928 CRYPTO_TFM_REQ_MASK);
929 crypto_sync_skcipher_set_flags(ablkctx->sw_cipher,
930 cipher->base.crt_flags & CRYPTO_TFM_REQ_MASK);
931 return crypto_sync_skcipher_setkey(ablkctx->sw_cipher, key, keylen);
932 }
933
934 static int chcr_aes_cbc_setkey(struct crypto_skcipher *cipher,
935 const u8 *key,
936 unsigned int keylen)
937 {
938 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
939 unsigned int ck_size, context_size;
940 u16 alignment = 0;
941 int err;
942
943 err = chcr_cipher_fallback_setkey(cipher, key, keylen);
944 if (err)
945 goto badkey_err;
946
947 ck_size = chcr_keyctx_ck_size(keylen);
948 alignment = ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192 ? 8 : 0;
949 memcpy(ablkctx->key, key, keylen);
950 ablkctx->enckey_len = keylen;
951 get_aes_decrypt_key(ablkctx->rrkey, ablkctx->key, keylen << 3);
952 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD +
953 keylen + alignment) >> 4;
954
955 ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY,
956 0, 0, context_size);
957 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CBC;
958 return 0;
959 badkey_err:
960 ablkctx->enckey_len = 0;
961
962 return err;
963 }
964
965 static int chcr_aes_ctr_setkey(struct crypto_skcipher *cipher,
966 const u8 *key,
967 unsigned int keylen)
968 {
969 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
970 unsigned int ck_size, context_size;
971 u16 alignment = 0;
972 int err;
973
974 err = chcr_cipher_fallback_setkey(cipher, key, keylen);
975 if (err)
976 goto badkey_err;
977 ck_size = chcr_keyctx_ck_size(keylen);
978 alignment = (ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192) ? 8 : 0;
979 memcpy(ablkctx->key, key, keylen);
980 ablkctx->enckey_len = keylen;
981 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD +
982 keylen + alignment) >> 4;
983
984 ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY,
985 0, 0, context_size);
986 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CTR;
987
988 return 0;
989 badkey_err:
990 ablkctx->enckey_len = 0;
991
992 return err;
993 }
994
995 static int chcr_aes_rfc3686_setkey(struct crypto_skcipher *cipher,
996 const u8 *key,
997 unsigned int keylen)
998 {
999 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
1000 unsigned int ck_size, context_size;
1001 u16 alignment = 0;
1002 int err;
1003
1004 if (keylen < CTR_RFC3686_NONCE_SIZE)
1005 return -EINVAL;
1006 memcpy(ablkctx->nonce, key + (keylen - CTR_RFC3686_NONCE_SIZE),
1007 CTR_RFC3686_NONCE_SIZE);
1008
1009 keylen -= CTR_RFC3686_NONCE_SIZE;
1010 err = chcr_cipher_fallback_setkey(cipher, key, keylen);
1011 if (err)
1012 goto badkey_err;
1013
1014 ck_size = chcr_keyctx_ck_size(keylen);
1015 alignment = (ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192) ? 8 : 0;
1016 memcpy(ablkctx->key, key, keylen);
1017 ablkctx->enckey_len = keylen;
1018 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD +
1019 keylen + alignment) >> 4;
1020
1021 ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY,
1022 0, 0, context_size);
1023 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CTR;
1024
1025 return 0;
1026 badkey_err:
1027 ablkctx->enckey_len = 0;
1028
1029 return err;
1030 }
1031 static void ctr_add_iv(u8 *dstiv, u8 *srciv, u32 add)
1032 {
1033 unsigned int size = AES_BLOCK_SIZE;
1034 __be32 *b = (__be32 *)(dstiv + size);
1035 u32 c, prev;
1036
1037 memcpy(dstiv, srciv, AES_BLOCK_SIZE);
1038 for (; size >= 4; size -= 4) {
1039 prev = be32_to_cpu(*--b);
1040 c = prev + add;
1041 *b = cpu_to_be32(c);
1042 if (prev < c)
1043 break;
1044 add = 1;
1045 }
1046
1047 }
1048
1049 static unsigned int adjust_ctr_overflow(u8 *iv, u32 bytes)
1050 {
1051 __be32 *b = (__be32 *)(iv + AES_BLOCK_SIZE);
1052 u64 c;
1053 u32 temp = be32_to_cpu(*--b);
1054
1055 temp = ~temp;
1056 c = (u64)temp + 1; // No of block can processed without overflow
1057 if ((bytes / AES_BLOCK_SIZE) >= c)
1058 bytes = c * AES_BLOCK_SIZE;
1059 return bytes;
1060 }
1061
1062 static int chcr_update_tweak(struct skcipher_request *req, u8 *iv,
1063 u32 isfinal)
1064 {
1065 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
1066 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm));
1067 struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req);
1068 struct crypto_aes_ctx aes;
1069 int ret, i;
1070 u8 *key;
1071 unsigned int keylen;
1072 int round = reqctx->last_req_len / AES_BLOCK_SIZE;
1073 int round8 = round / 8;
1074
1075 memcpy(iv, reqctx->iv, AES_BLOCK_SIZE);
1076
1077 keylen = ablkctx->enckey_len / 2;
1078 key = ablkctx->key + keylen;
1079 /* For a 192 bit key remove the padded zeroes which was
1080 * added in chcr_xts_setkey
1081 */
1082 if (KEY_CONTEXT_CK_SIZE_G(ntohl(ablkctx->key_ctx_hdr))
1083 == CHCR_KEYCTX_CIPHER_KEY_SIZE_192)
1084 ret = aes_expandkey(&aes, key, keylen - 8);
1085 else
1086 ret = aes_expandkey(&aes, key, keylen);
1087 if (ret)
1088 return ret;
1089 aes_encrypt(&aes, iv, iv);
1090 for (i = 0; i < round8; i++)
1091 gf128mul_x8_ble((le128 *)iv, (le128 *)iv);
1092
1093 for (i = 0; i < (round % 8); i++)
1094 gf128mul_x_ble((le128 *)iv, (le128 *)iv);
1095
1096 if (!isfinal)
1097 aes_decrypt(&aes, iv, iv);
1098
1099 memzero_explicit(&aes, sizeof(aes));
1100 return 0;
1101 }
1102
1103 static int chcr_update_cipher_iv(struct skcipher_request *req,
1104 struct cpl_fw6_pld *fw6_pld, u8 *iv)
1105 {
1106 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
1107 struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req);
1108 int subtype = get_cryptoalg_subtype(tfm);
1109 int ret = 0;
1110
1111 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR)
1112 ctr_add_iv(iv, req->iv, (reqctx->processed /
1113 AES_BLOCK_SIZE));
1114 else if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_RFC3686)
1115 *(__be32 *)(reqctx->iv + CTR_RFC3686_NONCE_SIZE +
1116 CTR_RFC3686_IV_SIZE) = cpu_to_be32((reqctx->processed /
1117 AES_BLOCK_SIZE) + 1);
1118 else if (subtype == CRYPTO_ALG_SUB_TYPE_XTS)
1119 ret = chcr_update_tweak(req, iv, 0);
1120 else if (subtype == CRYPTO_ALG_SUB_TYPE_CBC) {
1121 if (reqctx->op)
1122 /*Updated before sending last WR*/
1123 memcpy(iv, req->iv, AES_BLOCK_SIZE);
1124 else
1125 memcpy(iv, &fw6_pld->data[2], AES_BLOCK_SIZE);
1126 }
1127
1128 return ret;
1129
1130 }
1131
1132 /* We need separate function for final iv because in rfc3686 Initial counter
1133 * starts from 1 and buffer size of iv is 8 byte only which remains constant
1134 * for subsequent update requests
1135 */
1136
1137 static int chcr_final_cipher_iv(struct skcipher_request *req,
1138 struct cpl_fw6_pld *fw6_pld, u8 *iv)
1139 {
1140 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
1141 struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req);
1142 int subtype = get_cryptoalg_subtype(tfm);
1143 int ret = 0;
1144
1145 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR)
1146 ctr_add_iv(iv, req->iv, DIV_ROUND_UP(reqctx->processed,
1147 AES_BLOCK_SIZE));
1148 else if (subtype == CRYPTO_ALG_SUB_TYPE_XTS) {
1149 if (!reqctx->partial_req)
1150 memcpy(iv, reqctx->iv, AES_BLOCK_SIZE);
1151 else
1152 ret = chcr_update_tweak(req, iv, 1);
1153 }
1154 else if (subtype == CRYPTO_ALG_SUB_TYPE_CBC) {
1155 /*Already updated for Decrypt*/
1156 if (!reqctx->op)
1157 memcpy(iv, &fw6_pld->data[2], AES_BLOCK_SIZE);
1158
1159 }
1160 return ret;
1161
1162 }
1163
1164 static int chcr_handle_cipher_resp(struct skcipher_request *req,
1165 unsigned char *input, int err)
1166 {
1167 struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req);
1168 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
1169 struct cpl_fw6_pld *fw6_pld = (struct cpl_fw6_pld *)input;
1170 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm));
1171 struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm));
1172 struct chcr_dev *dev = c_ctx(tfm)->dev;
1173 struct chcr_context *ctx = c_ctx(tfm);
1174 struct adapter *adap = padap(ctx->dev);
1175 struct cipher_wr_param wrparam;
1176 struct sk_buff *skb;
1177 int bytes;
1178
1179 if (err)
1180 goto unmap;
1181 if (req->cryptlen == reqctx->processed) {
1182 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev,
1183 req);
1184 err = chcr_final_cipher_iv(req, fw6_pld, req->iv);
1185 goto complete;
1186 }
1187
1188 if (!reqctx->imm) {
1189 bytes = chcr_sg_ent_in_wr(reqctx->srcsg, reqctx->dstsg, 0,
1190 CIP_SPACE_LEFT(ablkctx->enckey_len),
1191 reqctx->src_ofst, reqctx->dst_ofst);
1192 if ((bytes + reqctx->processed) >= req->cryptlen)
1193 bytes = req->cryptlen - reqctx->processed;
1194 else
1195 bytes = rounddown(bytes, 16);
1196 } else {
1197 /*CTR mode counter overfloa*/
1198 bytes = req->cryptlen - reqctx->processed;
1199 }
1200 err = chcr_update_cipher_iv(req, fw6_pld, reqctx->iv);
1201 if (err)
1202 goto unmap;
1203
1204 if (unlikely(bytes == 0)) {
1205 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev,
1206 req);
1207 memcpy(req->iv, reqctx->init_iv, IV);
1208 atomic_inc(&adap->chcr_stats.fallback);
1209 err = chcr_cipher_fallback(ablkctx->sw_cipher,
1210 req->base.flags,
1211 req->src,
1212 req->dst,
1213 req->cryptlen,
1214 req->iv,
1215 reqctx->op);
1216 goto complete;
1217 }
1218
1219 if (get_cryptoalg_subtype(tfm) ==
1220 CRYPTO_ALG_SUB_TYPE_CTR)
1221 bytes = adjust_ctr_overflow(reqctx->iv, bytes);
1222 wrparam.qid = u_ctx->lldi.rxq_ids[reqctx->rxqidx];
1223 wrparam.req = req;
1224 wrparam.bytes = bytes;
1225 skb = create_cipher_wr(&wrparam);
1226 if (IS_ERR(skb)) {
1227 pr_err("chcr : %s : Failed to form WR. No memory\n", __func__);
1228 err = PTR_ERR(skb);
1229 goto unmap;
1230 }
1231 skb->dev = u_ctx->lldi.ports[0];
1232 set_wr_txq(skb, CPL_PRIORITY_DATA, reqctx->txqidx);
1233 chcr_send_wr(skb);
1234 reqctx->last_req_len = bytes;
1235 reqctx->processed += bytes;
1236 if (get_cryptoalg_subtype(tfm) ==
1237 CRYPTO_ALG_SUB_TYPE_CBC && req->base.flags ==
1238 CRYPTO_TFM_REQ_MAY_SLEEP ) {
1239 complete(&ctx->cbc_aes_aio_done);
1240 }
1241 return 0;
1242 unmap:
1243 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req);
1244 complete:
1245 if (get_cryptoalg_subtype(tfm) ==
1246 CRYPTO_ALG_SUB_TYPE_CBC && req->base.flags ==
1247 CRYPTO_TFM_REQ_MAY_SLEEP ) {
1248 complete(&ctx->cbc_aes_aio_done);
1249 }
1250 chcr_dec_wrcount(dev);
1251 req->base.complete(&req->base, err);
1252 return err;
1253 }
1254
1255 static int process_cipher(struct skcipher_request *req,
1256 unsigned short qid,
1257 struct sk_buff **skb,
1258 unsigned short op_type)
1259 {
1260 struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req);
1261 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
1262 unsigned int ivsize = crypto_skcipher_ivsize(tfm);
1263 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm));
1264 struct adapter *adap = padap(c_ctx(tfm)->dev);
1265 struct cipher_wr_param wrparam;
1266 int bytes, err = -EINVAL;
1267 int subtype;
1268
1269 reqctx->processed = 0;
1270 reqctx->partial_req = 0;
1271 if (!req->iv)
1272 goto error;
1273 subtype = get_cryptoalg_subtype(tfm);
1274 if ((ablkctx->enckey_len == 0) || (ivsize > AES_BLOCK_SIZE) ||
1275 (req->cryptlen == 0) ||
1276 (req->cryptlen % crypto_skcipher_blocksize(tfm))) {
1277 if (req->cryptlen == 0 && subtype != CRYPTO_ALG_SUB_TYPE_XTS)
1278 goto fallback;
1279 else if (req->cryptlen % crypto_skcipher_blocksize(tfm) &&
1280 subtype == CRYPTO_ALG_SUB_TYPE_XTS)
1281 goto fallback;
1282 pr_err("AES: Invalid value of Key Len %d nbytes %d IV Len %d\n",
1283 ablkctx->enckey_len, req->cryptlen, ivsize);
1284 goto error;
1285 }
1286
1287 err = chcr_cipher_dma_map(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req);
1288 if (err)
1289 goto error;
1290 if (req->cryptlen < (SGE_MAX_WR_LEN - (sizeof(struct chcr_wr) +
1291 AES_MIN_KEY_SIZE +
1292 sizeof(struct cpl_rx_phys_dsgl) +
1293 /*Min dsgl size*/
1294 32))) {
1295 /* Can be sent as Imm*/
1296 unsigned int dnents = 0, transhdr_len, phys_dsgl, kctx_len;
1297
1298 dnents = sg_nents_xlen(req->dst, req->cryptlen,
1299 CHCR_DST_SG_SIZE, 0);
1300 phys_dsgl = get_space_for_phys_dsgl(dnents);
1301 kctx_len = roundup(ablkctx->enckey_len, 16);
1302 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, phys_dsgl);
1303 reqctx->imm = (transhdr_len + IV + req->cryptlen) <=
1304 SGE_MAX_WR_LEN;
1305 bytes = IV + req->cryptlen;
1306
1307 } else {
1308 reqctx->imm = 0;
1309 }
1310
1311 if (!reqctx->imm) {
1312 bytes = chcr_sg_ent_in_wr(req->src, req->dst, 0,
1313 CIP_SPACE_LEFT(ablkctx->enckey_len),
1314 0, 0);
1315 if ((bytes + reqctx->processed) >= req->cryptlen)
1316 bytes = req->cryptlen - reqctx->processed;
1317 else
1318 bytes = rounddown(bytes, 16);
1319 } else {
1320 bytes = req->cryptlen;
1321 }
1322 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR) {
1323 bytes = adjust_ctr_overflow(req->iv, bytes);
1324 }
1325 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_RFC3686) {
1326 memcpy(reqctx->iv, ablkctx->nonce, CTR_RFC3686_NONCE_SIZE);
1327 memcpy(reqctx->iv + CTR_RFC3686_NONCE_SIZE, req->iv,
1328 CTR_RFC3686_IV_SIZE);
1329
1330 /* initialize counter portion of counter block */
1331 *(__be32 *)(reqctx->iv + CTR_RFC3686_NONCE_SIZE +
1332 CTR_RFC3686_IV_SIZE) = cpu_to_be32(1);
1333 memcpy(reqctx->init_iv, reqctx->iv, IV);
1334
1335 } else {
1336
1337 memcpy(reqctx->iv, req->iv, IV);
1338 memcpy(reqctx->init_iv, req->iv, IV);
1339 }
1340 if (unlikely(bytes == 0)) {
1341 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev,
1342 req);
1343 fallback: atomic_inc(&adap->chcr_stats.fallback);
1344 err = chcr_cipher_fallback(ablkctx->sw_cipher,
1345 req->base.flags,
1346 req->src,
1347 req->dst,
1348 req->cryptlen,
1349 subtype ==
1350 CRYPTO_ALG_SUB_TYPE_CTR_RFC3686 ?
1351 reqctx->iv : req->iv,
1352 op_type);
1353 goto error;
1354 }
1355 reqctx->op = op_type;
1356 reqctx->srcsg = req->src;
1357 reqctx->dstsg = req->dst;
1358 reqctx->src_ofst = 0;
1359 reqctx->dst_ofst = 0;
1360 wrparam.qid = qid;
1361 wrparam.req = req;
1362 wrparam.bytes = bytes;
1363 *skb = create_cipher_wr(&wrparam);
1364 if (IS_ERR(*skb)) {
1365 err = PTR_ERR(*skb);
1366 goto unmap;
1367 }
1368 reqctx->processed = bytes;
1369 reqctx->last_req_len = bytes;
1370 reqctx->partial_req = !!(req->cryptlen - reqctx->processed);
1371
1372 return 0;
1373 unmap:
1374 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req);
1375 error:
1376 return err;
1377 }
1378
1379 static int chcr_aes_encrypt(struct skcipher_request *req)
1380 {
1381 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
1382 struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req);
1383 struct chcr_dev *dev = c_ctx(tfm)->dev;
1384 struct sk_buff *skb = NULL;
1385 int err;
1386 struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm));
1387 struct chcr_context *ctx = c_ctx(tfm);
1388 unsigned int cpu;
1389
1390 cpu = get_cpu();
1391 reqctx->txqidx = cpu % ctx->ntxq;
1392 reqctx->rxqidx = cpu % ctx->nrxq;
1393 put_cpu();
1394
1395 err = chcr_inc_wrcount(dev);
1396 if (err)
1397 return -ENXIO;
1398 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
1399 reqctx->txqidx) &&
1400 (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)))) {
1401 err = -ENOSPC;
1402 goto error;
1403 }
1404
1405 err = process_cipher(req, u_ctx->lldi.rxq_ids[reqctx->rxqidx],
1406 &skb, CHCR_ENCRYPT_OP);
1407 if (err || !skb)
1408 return err;
1409 skb->dev = u_ctx->lldi.ports[0];
1410 set_wr_txq(skb, CPL_PRIORITY_DATA, reqctx->txqidx);
1411 chcr_send_wr(skb);
1412 if (get_cryptoalg_subtype(tfm) ==
1413 CRYPTO_ALG_SUB_TYPE_CBC && req->base.flags ==
1414 CRYPTO_TFM_REQ_MAY_SLEEP ) {
1415 reqctx->partial_req = 1;
1416 wait_for_completion(&ctx->cbc_aes_aio_done);
1417 }
1418 return -EINPROGRESS;
1419 error:
1420 chcr_dec_wrcount(dev);
1421 return err;
1422 }
1423
1424 static int chcr_aes_decrypt(struct skcipher_request *req)
1425 {
1426 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
1427 struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req);
1428 struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm));
1429 struct chcr_dev *dev = c_ctx(tfm)->dev;
1430 struct sk_buff *skb = NULL;
1431 int err;
1432 struct chcr_context *ctx = c_ctx(tfm);
1433 unsigned int cpu;
1434
1435 cpu = get_cpu();
1436 reqctx->txqidx = cpu % ctx->ntxq;
1437 reqctx->rxqidx = cpu % ctx->nrxq;
1438 put_cpu();
1439
1440 err = chcr_inc_wrcount(dev);
1441 if (err)
1442 return -ENXIO;
1443
1444 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
1445 reqctx->txqidx) &&
1446 (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))))
1447 return -ENOSPC;
1448 err = process_cipher(req, u_ctx->lldi.rxq_ids[reqctx->rxqidx],
1449 &skb, CHCR_DECRYPT_OP);
1450 if (err || !skb)
1451 return err;
1452 skb->dev = u_ctx->lldi.ports[0];
1453 set_wr_txq(skb, CPL_PRIORITY_DATA, reqctx->txqidx);
1454 chcr_send_wr(skb);
1455 return -EINPROGRESS;
1456 }
1457 static int chcr_device_init(struct chcr_context *ctx)
1458 {
1459 struct uld_ctx *u_ctx = NULL;
1460 int txq_perchan, ntxq;
1461 int err = 0, rxq_perchan;
1462
1463 if (!ctx->dev) {
1464 u_ctx = assign_chcr_device();
1465 if (!u_ctx) {
1466 err = -ENXIO;
1467 pr_err("chcr device assignment fails\n");
1468 goto out;
1469 }
1470 ctx->dev = &u_ctx->dev;
1471 ntxq = u_ctx->lldi.ntxq;
1472 rxq_perchan = u_ctx->lldi.nrxq / u_ctx->lldi.nchan;
1473 txq_perchan = ntxq / u_ctx->lldi.nchan;
1474 ctx->ntxq = ntxq;
1475 ctx->nrxq = u_ctx->lldi.nrxq;
1476 ctx->rxq_perchan = rxq_perchan;
1477 ctx->txq_perchan = txq_perchan;
1478 }
1479 out:
1480 return err;
1481 }
1482
1483 static int chcr_init_tfm(struct crypto_skcipher *tfm)
1484 {
1485 struct skcipher_alg *alg = crypto_skcipher_alg(tfm);
1486 struct chcr_context *ctx = crypto_skcipher_ctx(tfm);
1487 struct ablk_ctx *ablkctx = ABLK_CTX(ctx);
1488
1489 ablkctx->sw_cipher = crypto_alloc_sync_skcipher(alg->base.cra_name, 0,
1490 CRYPTO_ALG_NEED_FALLBACK);
1491 if (IS_ERR(ablkctx->sw_cipher)) {
1492 pr_err("failed to allocate fallback for %s\n", alg->base.cra_name);
1493 return PTR_ERR(ablkctx->sw_cipher);
1494 }
1495 init_completion(&ctx->cbc_aes_aio_done);
1496 crypto_skcipher_set_reqsize(tfm, sizeof(struct chcr_skcipher_req_ctx));
1497
1498 return chcr_device_init(ctx);
1499 }
1500
1501 static int chcr_rfc3686_init(struct crypto_skcipher *tfm)
1502 {
1503 struct skcipher_alg *alg = crypto_skcipher_alg(tfm);
1504 struct chcr_context *ctx = crypto_skcipher_ctx(tfm);
1505 struct ablk_ctx *ablkctx = ABLK_CTX(ctx);
1506
1507 /*RFC3686 initialises IV counter value to 1, rfc3686(ctr(aes))
1508 * cannot be used as fallback in chcr_handle_cipher_response
1509 */
1510 ablkctx->sw_cipher = crypto_alloc_sync_skcipher("ctr(aes)", 0,
1511 CRYPTO_ALG_NEED_FALLBACK);
1512 if (IS_ERR(ablkctx->sw_cipher)) {
1513 pr_err("failed to allocate fallback for %s\n", alg->base.cra_name);
1514 return PTR_ERR(ablkctx->sw_cipher);
1515 }
1516 crypto_skcipher_set_reqsize(tfm, sizeof(struct chcr_skcipher_req_ctx));
1517 return chcr_device_init(ctx);
1518 }
1519
1520
1521 static void chcr_exit_tfm(struct crypto_skcipher *tfm)
1522 {
1523 struct chcr_context *ctx = crypto_skcipher_ctx(tfm);
1524 struct ablk_ctx *ablkctx = ABLK_CTX(ctx);
1525
1526 crypto_free_sync_skcipher(ablkctx->sw_cipher);
1527 }
1528
1529 static int get_alg_config(struct algo_param *params,
1530 unsigned int auth_size)
1531 {
1532 switch (auth_size) {
1533 case SHA1_DIGEST_SIZE:
1534 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_160;
1535 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA1;
1536 params->result_size = SHA1_DIGEST_SIZE;
1537 break;
1538 case SHA224_DIGEST_SIZE:
1539 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256;
1540 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA224;
1541 params->result_size = SHA256_DIGEST_SIZE;
1542 break;
1543 case SHA256_DIGEST_SIZE:
1544 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256;
1545 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA256;
1546 params->result_size = SHA256_DIGEST_SIZE;
1547 break;
1548 case SHA384_DIGEST_SIZE:
1549 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_512;
1550 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA512_384;
1551 params->result_size = SHA512_DIGEST_SIZE;
1552 break;
1553 case SHA512_DIGEST_SIZE:
1554 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_512;
1555 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA512_512;
1556 params->result_size = SHA512_DIGEST_SIZE;
1557 break;
1558 default:
1559 pr_err("chcr : ERROR, unsupported digest size\n");
1560 return -EINVAL;
1561 }
1562 return 0;
1563 }
1564
1565 static inline void chcr_free_shash(struct crypto_shash *base_hash)
1566 {
1567 crypto_free_shash(base_hash);
1568 }
1569
1570 /**
1571 * create_hash_wr - Create hash work request
1572 * @req - Cipher req base
1573 */
1574 static struct sk_buff *create_hash_wr(struct ahash_request *req,
1575 struct hash_wr_param *param)
1576 {
1577 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1578 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
1579 struct chcr_context *ctx = h_ctx(tfm);
1580 struct hmac_ctx *hmacctx = HMAC_CTX(ctx);
1581 struct sk_buff *skb = NULL;
1582 struct uld_ctx *u_ctx = ULD_CTX(ctx);
1583 struct chcr_wr *chcr_req;
1584 struct ulptx_sgl *ulptx;
1585 unsigned int nents = 0, transhdr_len;
1586 unsigned int temp = 0;
1587 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
1588 GFP_ATOMIC;
1589 struct adapter *adap = padap(h_ctx(tfm)->dev);
1590 int error = 0;
1591 unsigned int rx_channel_id = req_ctx->rxqidx / ctx->rxq_perchan;
1592
1593 transhdr_len = HASH_TRANSHDR_SIZE(param->kctx_len);
1594 req_ctx->hctx_wr.imm = (transhdr_len + param->bfr_len +
1595 param->sg_len) <= SGE_MAX_WR_LEN;
1596 nents = sg_nents_xlen(req_ctx->hctx_wr.srcsg, param->sg_len,
1597 CHCR_SRC_SG_SIZE, req_ctx->hctx_wr.src_ofst);
1598 nents += param->bfr_len ? 1 : 0;
1599 transhdr_len += req_ctx->hctx_wr.imm ? roundup(param->bfr_len +
1600 param->sg_len, 16) : (sgl_len(nents) * 8);
1601 transhdr_len = roundup(transhdr_len, 16);
1602
1603 skb = alloc_skb(transhdr_len, flags);
1604 if (!skb)
1605 return ERR_PTR(-ENOMEM);
1606 chcr_req = __skb_put_zero(skb, transhdr_len);
1607
1608 chcr_req->sec_cpl.op_ivinsrtofst =
1609 FILL_SEC_CPL_OP_IVINSR(rx_channel_id, 2, 0);
1610
1611 chcr_req->sec_cpl.pldlen = htonl(param->bfr_len + param->sg_len);
1612
1613 chcr_req->sec_cpl.aadstart_cipherstop_hi =
1614 FILL_SEC_CPL_CIPHERSTOP_HI(0, 0, 0, 0);
1615 chcr_req->sec_cpl.cipherstop_lo_authinsert =
1616 FILL_SEC_CPL_AUTHINSERT(0, 1, 0, 0);
1617 chcr_req->sec_cpl.seqno_numivs =
1618 FILL_SEC_CPL_SCMD0_SEQNO(0, 0, 0, param->alg_prm.auth_mode,
1619 param->opad_needed, 0);
1620
1621 chcr_req->sec_cpl.ivgen_hdrlen =
1622 FILL_SEC_CPL_IVGEN_HDRLEN(param->last, param->more, 0, 1, 0, 0);
1623
1624 memcpy(chcr_req->key_ctx.key, req_ctx->partial_hash,
1625 param->alg_prm.result_size);
1626
1627 if (param->opad_needed)
1628 memcpy(chcr_req->key_ctx.key +
1629 ((param->alg_prm.result_size <= 32) ? 32 :
1630 CHCR_HASH_MAX_DIGEST_SIZE),
1631 hmacctx->opad, param->alg_prm.result_size);
1632
1633 chcr_req->key_ctx.ctx_hdr = FILL_KEY_CTX_HDR(CHCR_KEYCTX_NO_KEY,
1634 param->alg_prm.mk_size, 0,
1635 param->opad_needed,
1636 ((param->kctx_len +
1637 sizeof(chcr_req->key_ctx)) >> 4));
1638 chcr_req->sec_cpl.scmd1 = cpu_to_be64((u64)param->scmd1);
1639 ulptx = (struct ulptx_sgl *)((u8 *)(chcr_req + 1) + param->kctx_len +
1640 DUMMY_BYTES);
1641 if (param->bfr_len != 0) {
1642 req_ctx->hctx_wr.dma_addr =
1643 dma_map_single(&u_ctx->lldi.pdev->dev, req_ctx->reqbfr,
1644 param->bfr_len, DMA_TO_DEVICE);
1645 if (dma_mapping_error(&u_ctx->lldi.pdev->dev,
1646 req_ctx->hctx_wr. dma_addr)) {
1647 error = -ENOMEM;
1648 goto err;
1649 }
1650 req_ctx->hctx_wr.dma_len = param->bfr_len;
1651 } else {
1652 req_ctx->hctx_wr.dma_addr = 0;
1653 }
1654 chcr_add_hash_src_ent(req, ulptx, param);
1655 /* Request upto max wr size */
1656 temp = param->kctx_len + DUMMY_BYTES + (req_ctx->hctx_wr.imm ?
1657 (param->sg_len + param->bfr_len) : 0);
1658 atomic_inc(&adap->chcr_stats.digest_rqst);
1659 create_wreq(h_ctx(tfm), chcr_req, &req->base, req_ctx->hctx_wr.imm,
1660 param->hash_size, transhdr_len,
1661 temp, 0);
1662 req_ctx->hctx_wr.skb = skb;
1663 return skb;
1664 err:
1665 kfree_skb(skb);
1666 return ERR_PTR(error);
1667 }
1668
1669 static int chcr_ahash_update(struct ahash_request *req)
1670 {
1671 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1672 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
1673 struct uld_ctx *u_ctx = ULD_CTX(h_ctx(rtfm));
1674 struct chcr_context *ctx = h_ctx(rtfm);
1675 struct chcr_dev *dev = h_ctx(rtfm)->dev;
1676 struct sk_buff *skb;
1677 u8 remainder = 0, bs;
1678 unsigned int nbytes = req->nbytes;
1679 struct hash_wr_param params;
1680 int error;
1681 unsigned int cpu;
1682
1683 cpu = get_cpu();
1684 req_ctx->txqidx = cpu % ctx->ntxq;
1685 req_ctx->rxqidx = cpu % ctx->nrxq;
1686 put_cpu();
1687
1688 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1689
1690 if (nbytes + req_ctx->reqlen >= bs) {
1691 remainder = (nbytes + req_ctx->reqlen) % bs;
1692 nbytes = nbytes + req_ctx->reqlen - remainder;
1693 } else {
1694 sg_pcopy_to_buffer(req->src, sg_nents(req->src), req_ctx->reqbfr
1695 + req_ctx->reqlen, nbytes, 0);
1696 req_ctx->reqlen += nbytes;
1697 return 0;
1698 }
1699 error = chcr_inc_wrcount(dev);
1700 if (error)
1701 return -ENXIO;
1702 /* Detach state for CHCR means lldi or padap is freed. Increasing
1703 * inflight count for dev guarantees that lldi and padap is valid
1704 */
1705 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
1706 req_ctx->txqidx) &&
1707 (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)))) {
1708 error = -ENOSPC;
1709 goto err;
1710 }
1711
1712 chcr_init_hctx_per_wr(req_ctx);
1713 error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req);
1714 if (error) {
1715 error = -ENOMEM;
1716 goto err;
1717 }
1718 get_alg_config(&params.alg_prm, crypto_ahash_digestsize(rtfm));
1719 params.kctx_len = roundup(params.alg_prm.result_size, 16);
1720 params.sg_len = chcr_hash_ent_in_wr(req->src, !!req_ctx->reqlen,
1721 HASH_SPACE_LEFT(params.kctx_len), 0);
1722 if (params.sg_len > req->nbytes)
1723 params.sg_len = req->nbytes;
1724 params.sg_len = rounddown(params.sg_len + req_ctx->reqlen, bs) -
1725 req_ctx->reqlen;
1726 params.opad_needed = 0;
1727 params.more = 1;
1728 params.last = 0;
1729 params.bfr_len = req_ctx->reqlen;
1730 params.scmd1 = 0;
1731 req_ctx->hctx_wr.srcsg = req->src;
1732
1733 params.hash_size = params.alg_prm.result_size;
1734 req_ctx->data_len += params.sg_len + params.bfr_len;
1735 skb = create_hash_wr(req, &params);
1736 if (IS_ERR(skb)) {
1737 error = PTR_ERR(skb);
1738 goto unmap;
1739 }
1740
1741 req_ctx->hctx_wr.processed += params.sg_len;
1742 if (remainder) {
1743 /* Swap buffers */
1744 swap(req_ctx->reqbfr, req_ctx->skbfr);
1745 sg_pcopy_to_buffer(req->src, sg_nents(req->src),
1746 req_ctx->reqbfr, remainder, req->nbytes -
1747 remainder);
1748 }
1749 req_ctx->reqlen = remainder;
1750 skb->dev = u_ctx->lldi.ports[0];
1751 set_wr_txq(skb, CPL_PRIORITY_DATA, req_ctx->txqidx);
1752 chcr_send_wr(skb);
1753 return -EINPROGRESS;
1754 unmap:
1755 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
1756 err:
1757 chcr_dec_wrcount(dev);
1758 return error;
1759 }
1760
1761 static void create_last_hash_block(char *bfr_ptr, unsigned int bs, u64 scmd1)
1762 {
1763 memset(bfr_ptr, 0, bs);
1764 *bfr_ptr = 0x80;
1765 if (bs == 64)
1766 *(__be64 *)(bfr_ptr + 56) = cpu_to_be64(scmd1 << 3);
1767 else
1768 *(__be64 *)(bfr_ptr + 120) = cpu_to_be64(scmd1 << 3);
1769 }
1770
1771 static int chcr_ahash_final(struct ahash_request *req)
1772 {
1773 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1774 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
1775 struct chcr_dev *dev = h_ctx(rtfm)->dev;
1776 struct hash_wr_param params;
1777 struct sk_buff *skb;
1778 struct uld_ctx *u_ctx = ULD_CTX(h_ctx(rtfm));
1779 struct chcr_context *ctx = h_ctx(rtfm);
1780 u8 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1781 int error;
1782 unsigned int cpu;
1783
1784 cpu = get_cpu();
1785 req_ctx->txqidx = cpu % ctx->ntxq;
1786 req_ctx->rxqidx = cpu % ctx->nrxq;
1787 put_cpu();
1788
1789 error = chcr_inc_wrcount(dev);
1790 if (error)
1791 return -ENXIO;
1792
1793 chcr_init_hctx_per_wr(req_ctx);
1794 if (is_hmac(crypto_ahash_tfm(rtfm)))
1795 params.opad_needed = 1;
1796 else
1797 params.opad_needed = 0;
1798 params.sg_len = 0;
1799 req_ctx->hctx_wr.isfinal = 1;
1800 get_alg_config(&params.alg_prm, crypto_ahash_digestsize(rtfm));
1801 params.kctx_len = roundup(params.alg_prm.result_size, 16);
1802 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1803 params.opad_needed = 1;
1804 params.kctx_len *= 2;
1805 } else {
1806 params.opad_needed = 0;
1807 }
1808
1809 req_ctx->hctx_wr.result = 1;
1810 params.bfr_len = req_ctx->reqlen;
1811 req_ctx->data_len += params.bfr_len + params.sg_len;
1812 req_ctx->hctx_wr.srcsg = req->src;
1813 if (req_ctx->reqlen == 0) {
1814 create_last_hash_block(req_ctx->reqbfr, bs, req_ctx->data_len);
1815 params.last = 0;
1816 params.more = 1;
1817 params.scmd1 = 0;
1818 params.bfr_len = bs;
1819
1820 } else {
1821 params.scmd1 = req_ctx->data_len;
1822 params.last = 1;
1823 params.more = 0;
1824 }
1825 params.hash_size = crypto_ahash_digestsize(rtfm);
1826 skb = create_hash_wr(req, &params);
1827 if (IS_ERR(skb)) {
1828 error = PTR_ERR(skb);
1829 goto err;
1830 }
1831 req_ctx->reqlen = 0;
1832 skb->dev = u_ctx->lldi.ports[0];
1833 set_wr_txq(skb, CPL_PRIORITY_DATA, req_ctx->txqidx);
1834 chcr_send_wr(skb);
1835 return -EINPROGRESS;
1836 err:
1837 chcr_dec_wrcount(dev);
1838 return error;
1839 }
1840
1841 static int chcr_ahash_finup(struct ahash_request *req)
1842 {
1843 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1844 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
1845 struct chcr_dev *dev = h_ctx(rtfm)->dev;
1846 struct uld_ctx *u_ctx = ULD_CTX(h_ctx(rtfm));
1847 struct chcr_context *ctx = h_ctx(rtfm);
1848 struct sk_buff *skb;
1849 struct hash_wr_param params;
1850 u8 bs;
1851 int error;
1852 unsigned int cpu;
1853
1854 cpu = get_cpu();
1855 req_ctx->txqidx = cpu % ctx->ntxq;
1856 req_ctx->rxqidx = cpu % ctx->nrxq;
1857 put_cpu();
1858
1859 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1860 error = chcr_inc_wrcount(dev);
1861 if (error)
1862 return -ENXIO;
1863
1864 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
1865 req_ctx->txqidx) &&
1866 (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)))) {
1867 error = -ENOSPC;
1868 goto err;
1869 }
1870 chcr_init_hctx_per_wr(req_ctx);
1871 error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req);
1872 if (error) {
1873 error = -ENOMEM;
1874 goto err;
1875 }
1876
1877 get_alg_config(&params.alg_prm, crypto_ahash_digestsize(rtfm));
1878 params.kctx_len = roundup(params.alg_prm.result_size, 16);
1879 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1880 params.kctx_len *= 2;
1881 params.opad_needed = 1;
1882 } else {
1883 params.opad_needed = 0;
1884 }
1885
1886 params.sg_len = chcr_hash_ent_in_wr(req->src, !!req_ctx->reqlen,
1887 HASH_SPACE_LEFT(params.kctx_len), 0);
1888 if (params.sg_len < req->nbytes) {
1889 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1890 params.kctx_len /= 2;
1891 params.opad_needed = 0;
1892 }
1893 params.last = 0;
1894 params.more = 1;
1895 params.sg_len = rounddown(params.sg_len + req_ctx->reqlen, bs)
1896 - req_ctx->reqlen;
1897 params.hash_size = params.alg_prm.result_size;
1898 params.scmd1 = 0;
1899 } else {
1900 params.last = 1;
1901 params.more = 0;
1902 params.sg_len = req->nbytes;
1903 params.hash_size = crypto_ahash_digestsize(rtfm);
1904 params.scmd1 = req_ctx->data_len + req_ctx->reqlen +
1905 params.sg_len;
1906 }
1907 params.bfr_len = req_ctx->reqlen;
1908 req_ctx->data_len += params.bfr_len + params.sg_len;
1909 req_ctx->hctx_wr.result = 1;
1910 req_ctx->hctx_wr.srcsg = req->src;
1911 if ((req_ctx->reqlen + req->nbytes) == 0) {
1912 create_last_hash_block(req_ctx->reqbfr, bs, req_ctx->data_len);
1913 params.last = 0;
1914 params.more = 1;
1915 params.scmd1 = 0;
1916 params.bfr_len = bs;
1917 }
1918 skb = create_hash_wr(req, &params);
1919 if (IS_ERR(skb)) {
1920 error = PTR_ERR(skb);
1921 goto unmap;
1922 }
1923 req_ctx->reqlen = 0;
1924 req_ctx->hctx_wr.processed += params.sg_len;
1925 skb->dev = u_ctx->lldi.ports[0];
1926 set_wr_txq(skb, CPL_PRIORITY_DATA, req_ctx->txqidx);
1927 chcr_send_wr(skb);
1928 return -EINPROGRESS;
1929 unmap:
1930 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
1931 err:
1932 chcr_dec_wrcount(dev);
1933 return error;
1934 }
1935
1936 static int chcr_ahash_digest(struct ahash_request *req)
1937 {
1938 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1939 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
1940 struct chcr_dev *dev = h_ctx(rtfm)->dev;
1941 struct uld_ctx *u_ctx = ULD_CTX(h_ctx(rtfm));
1942 struct chcr_context *ctx = h_ctx(rtfm);
1943 struct sk_buff *skb;
1944 struct hash_wr_param params;
1945 u8 bs;
1946 int error;
1947 unsigned int cpu;
1948
1949 cpu = get_cpu();
1950 req_ctx->txqidx = cpu % ctx->ntxq;
1951 req_ctx->rxqidx = cpu % ctx->nrxq;
1952 put_cpu();
1953
1954 rtfm->init(req);
1955 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1956 error = chcr_inc_wrcount(dev);
1957 if (error)
1958 return -ENXIO;
1959
1960 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
1961 req_ctx->txqidx) &&
1962 (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)))) {
1963 error = -ENOSPC;
1964 goto err;
1965 }
1966
1967 chcr_init_hctx_per_wr(req_ctx);
1968 error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req);
1969 if (error) {
1970 error = -ENOMEM;
1971 goto err;
1972 }
1973
1974 get_alg_config(&params.alg_prm, crypto_ahash_digestsize(rtfm));
1975 params.kctx_len = roundup(params.alg_prm.result_size, 16);
1976 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1977 params.kctx_len *= 2;
1978 params.opad_needed = 1;
1979 } else {
1980 params.opad_needed = 0;
1981 }
1982 params.sg_len = chcr_hash_ent_in_wr(req->src, !!req_ctx->reqlen,
1983 HASH_SPACE_LEFT(params.kctx_len), 0);
1984 if (params.sg_len < req->nbytes) {
1985 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1986 params.kctx_len /= 2;
1987 params.opad_needed = 0;
1988 }
1989 params.last = 0;
1990 params.more = 1;
1991 params.scmd1 = 0;
1992 params.sg_len = rounddown(params.sg_len, bs);
1993 params.hash_size = params.alg_prm.result_size;
1994 } else {
1995 params.sg_len = req->nbytes;
1996 params.hash_size = crypto_ahash_digestsize(rtfm);
1997 params.last = 1;
1998 params.more = 0;
1999 params.scmd1 = req->nbytes + req_ctx->data_len;
2000
2001 }
2002 params.bfr_len = 0;
2003 req_ctx->hctx_wr.result = 1;
2004 req_ctx->hctx_wr.srcsg = req->src;
2005 req_ctx->data_len += params.bfr_len + params.sg_len;
2006
2007 if (req->nbytes == 0) {
2008 create_last_hash_block(req_ctx->reqbfr, bs, req_ctx->data_len);
2009 params.more = 1;
2010 params.bfr_len = bs;
2011 }
2012
2013 skb = create_hash_wr(req, &params);
2014 if (IS_ERR(skb)) {
2015 error = PTR_ERR(skb);
2016 goto unmap;
2017 }
2018 req_ctx->hctx_wr.processed += params.sg_len;
2019 skb->dev = u_ctx->lldi.ports[0];
2020 set_wr_txq(skb, CPL_PRIORITY_DATA, req_ctx->txqidx);
2021 chcr_send_wr(skb);
2022 return -EINPROGRESS;
2023 unmap:
2024 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
2025 err:
2026 chcr_dec_wrcount(dev);
2027 return error;
2028 }
2029
2030 static int chcr_ahash_continue(struct ahash_request *req)
2031 {
2032 struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req);
2033 struct chcr_hctx_per_wr *hctx_wr = &reqctx->hctx_wr;
2034 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
2035 struct chcr_context *ctx = h_ctx(rtfm);
2036 struct uld_ctx *u_ctx = ULD_CTX(ctx);
2037 struct sk_buff *skb;
2038 struct hash_wr_param params;
2039 u8 bs;
2040 int error;
2041 unsigned int cpu;
2042
2043 cpu = get_cpu();
2044 reqctx->txqidx = cpu % ctx->ntxq;
2045 reqctx->rxqidx = cpu % ctx->nrxq;
2046 put_cpu();
2047
2048 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
2049 get_alg_config(&params.alg_prm, crypto_ahash_digestsize(rtfm));
2050 params.kctx_len = roundup(params.alg_prm.result_size, 16);
2051 if (is_hmac(crypto_ahash_tfm(rtfm))) {
2052 params.kctx_len *= 2;
2053 params.opad_needed = 1;
2054 } else {
2055 params.opad_needed = 0;
2056 }
2057 params.sg_len = chcr_hash_ent_in_wr(hctx_wr->srcsg, 0,
2058 HASH_SPACE_LEFT(params.kctx_len),
2059 hctx_wr->src_ofst);
2060 if ((params.sg_len + hctx_wr->processed) > req->nbytes)
2061 params.sg_len = req->nbytes - hctx_wr->processed;
2062 if (!hctx_wr->result ||
2063 ((params.sg_len + hctx_wr->processed) < req->nbytes)) {
2064 if (is_hmac(crypto_ahash_tfm(rtfm))) {
2065 params.kctx_len /= 2;
2066 params.opad_needed = 0;
2067 }
2068 params.last = 0;
2069 params.more = 1;
2070 params.sg_len = rounddown(params.sg_len, bs);
2071 params.hash_size = params.alg_prm.result_size;
2072 params.scmd1 = 0;
2073 } else {
2074 params.last = 1;
2075 params.more = 0;
2076 params.hash_size = crypto_ahash_digestsize(rtfm);
2077 params.scmd1 = reqctx->data_len + params.sg_len;
2078 }
2079 params.bfr_len = 0;
2080 reqctx->data_len += params.sg_len;
2081 skb = create_hash_wr(req, &params);
2082 if (IS_ERR(skb)) {
2083 error = PTR_ERR(skb);
2084 goto err;
2085 }
2086 hctx_wr->processed += params.sg_len;
2087 skb->dev = u_ctx->lldi.ports[0];
2088 set_wr_txq(skb, CPL_PRIORITY_DATA, reqctx->txqidx);
2089 chcr_send_wr(skb);
2090 return 0;
2091 err:
2092 return error;
2093 }
2094
2095 static inline void chcr_handle_ahash_resp(struct ahash_request *req,
2096 unsigned char *input,
2097 int err)
2098 {
2099 struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req);
2100 struct chcr_hctx_per_wr *hctx_wr = &reqctx->hctx_wr;
2101 int digestsize, updated_digestsize;
2102 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
2103 struct uld_ctx *u_ctx = ULD_CTX(h_ctx(tfm));
2104 struct chcr_dev *dev = h_ctx(tfm)->dev;
2105
2106 if (input == NULL)
2107 goto out;
2108 digestsize = crypto_ahash_digestsize(crypto_ahash_reqtfm(req));
2109 updated_digestsize = digestsize;
2110 if (digestsize == SHA224_DIGEST_SIZE)
2111 updated_digestsize = SHA256_DIGEST_SIZE;
2112 else if (digestsize == SHA384_DIGEST_SIZE)
2113 updated_digestsize = SHA512_DIGEST_SIZE;
2114
2115 if (hctx_wr->dma_addr) {
2116 dma_unmap_single(&u_ctx->lldi.pdev->dev, hctx_wr->dma_addr,
2117 hctx_wr->dma_len, DMA_TO_DEVICE);
2118 hctx_wr->dma_addr = 0;
2119 }
2120 if (hctx_wr->isfinal || ((hctx_wr->processed + reqctx->reqlen) ==
2121 req->nbytes)) {
2122 if (hctx_wr->result == 1) {
2123 hctx_wr->result = 0;
2124 memcpy(req->result, input + sizeof(struct cpl_fw6_pld),
2125 digestsize);
2126 } else {
2127 memcpy(reqctx->partial_hash,
2128 input + sizeof(struct cpl_fw6_pld),
2129 updated_digestsize);
2130
2131 }
2132 goto unmap;
2133 }
2134 memcpy(reqctx->partial_hash, input + sizeof(struct cpl_fw6_pld),
2135 updated_digestsize);
2136
2137 err = chcr_ahash_continue(req);
2138 if (err)
2139 goto unmap;
2140 return;
2141 unmap:
2142 if (hctx_wr->is_sg_map)
2143 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
2144
2145
2146 out:
2147 chcr_dec_wrcount(dev);
2148 req->base.complete(&req->base, err);
2149 }
2150
2151 /*
2152 * chcr_handle_resp - Unmap the DMA buffers associated with the request
2153 * @req: crypto request
2154 */
2155 int chcr_handle_resp(struct crypto_async_request *req, unsigned char *input,
2156 int err)
2157 {
2158 struct crypto_tfm *tfm = req->tfm;
2159 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
2160 struct adapter *adap = padap(ctx->dev);
2161
2162 switch (tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK) {
2163 case CRYPTO_ALG_TYPE_AEAD:
2164 err = chcr_handle_aead_resp(aead_request_cast(req), input, err);
2165 break;
2166
2167 case CRYPTO_ALG_TYPE_SKCIPHER:
2168 chcr_handle_cipher_resp(skcipher_request_cast(req),
2169 input, err);
2170 break;
2171 case CRYPTO_ALG_TYPE_AHASH:
2172 chcr_handle_ahash_resp(ahash_request_cast(req), input, err);
2173 }
2174 atomic_inc(&adap->chcr_stats.complete);
2175 return err;
2176 }
2177 static int chcr_ahash_export(struct ahash_request *areq, void *out)
2178 {
2179 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
2180 struct chcr_ahash_req_ctx *state = out;
2181
2182 state->reqlen = req_ctx->reqlen;
2183 state->data_len = req_ctx->data_len;
2184 memcpy(state->bfr1, req_ctx->reqbfr, req_ctx->reqlen);
2185 memcpy(state->partial_hash, req_ctx->partial_hash,
2186 CHCR_HASH_MAX_DIGEST_SIZE);
2187 chcr_init_hctx_per_wr(state);
2188 return 0;
2189 }
2190
2191 static int chcr_ahash_import(struct ahash_request *areq, const void *in)
2192 {
2193 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
2194 struct chcr_ahash_req_ctx *state = (struct chcr_ahash_req_ctx *)in;
2195
2196 req_ctx->reqlen = state->reqlen;
2197 req_ctx->data_len = state->data_len;
2198 req_ctx->reqbfr = req_ctx->bfr1;
2199 req_ctx->skbfr = req_ctx->bfr2;
2200 memcpy(req_ctx->bfr1, state->bfr1, CHCR_HASH_MAX_BLOCK_SIZE_128);
2201 memcpy(req_ctx->partial_hash, state->partial_hash,
2202 CHCR_HASH_MAX_DIGEST_SIZE);
2203 chcr_init_hctx_per_wr(req_ctx);
2204 return 0;
2205 }
2206
2207 static int chcr_ahash_setkey(struct crypto_ahash *tfm, const u8 *key,
2208 unsigned int keylen)
2209 {
2210 struct hmac_ctx *hmacctx = HMAC_CTX(h_ctx(tfm));
2211 unsigned int digestsize = crypto_ahash_digestsize(tfm);
2212 unsigned int bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm));
2213 unsigned int i, err = 0, updated_digestsize;
2214
2215 SHASH_DESC_ON_STACK(shash, hmacctx->base_hash);
2216
2217 /* use the key to calculate the ipad and opad. ipad will sent with the
2218 * first request's data. opad will be sent with the final hash result
2219 * ipad in hmacctx->ipad and opad in hmacctx->opad location
2220 */
2221 shash->tfm = hmacctx->base_hash;
2222 if (keylen > bs) {
2223 err = crypto_shash_digest(shash, key, keylen,
2224 hmacctx->ipad);
2225 if (err)
2226 goto out;
2227 keylen = digestsize;
2228 } else {
2229 memcpy(hmacctx->ipad, key, keylen);
2230 }
2231 memset(hmacctx->ipad + keylen, 0, bs - keylen);
2232 memcpy(hmacctx->opad, hmacctx->ipad, bs);
2233
2234 for (i = 0; i < bs / sizeof(int); i++) {
2235 *((unsigned int *)(&hmacctx->ipad) + i) ^= IPAD_DATA;
2236 *((unsigned int *)(&hmacctx->opad) + i) ^= OPAD_DATA;
2237 }
2238
2239 updated_digestsize = digestsize;
2240 if (digestsize == SHA224_DIGEST_SIZE)
2241 updated_digestsize = SHA256_DIGEST_SIZE;
2242 else if (digestsize == SHA384_DIGEST_SIZE)
2243 updated_digestsize = SHA512_DIGEST_SIZE;
2244 err = chcr_compute_partial_hash(shash, hmacctx->ipad,
2245 hmacctx->ipad, digestsize);
2246 if (err)
2247 goto out;
2248 chcr_change_order(hmacctx->ipad, updated_digestsize);
2249
2250 err = chcr_compute_partial_hash(shash, hmacctx->opad,
2251 hmacctx->opad, digestsize);
2252 if (err)
2253 goto out;
2254 chcr_change_order(hmacctx->opad, updated_digestsize);
2255 out:
2256 return err;
2257 }
2258
2259 static int chcr_aes_xts_setkey(struct crypto_skcipher *cipher, const u8 *key,
2260 unsigned int key_len)
2261 {
2262 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
2263 unsigned short context_size = 0;
2264 int err;
2265
2266 err = chcr_cipher_fallback_setkey(cipher, key, key_len);
2267 if (err)
2268 goto badkey_err;
2269
2270 memcpy(ablkctx->key, key, key_len);
2271 ablkctx->enckey_len = key_len;
2272 get_aes_decrypt_key(ablkctx->rrkey, ablkctx->key, key_len << 2);
2273 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD + key_len) >> 4;
2274 /* Both keys for xts must be aligned to 16 byte boundary
2275 * by padding with zeros. So for 24 byte keys padding 8 zeroes.
2276 */
2277 if (key_len == 48) {
2278 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD + key_len
2279 + 16) >> 4;
2280 memmove(ablkctx->key + 32, ablkctx->key + 24, 24);
2281 memset(ablkctx->key + 24, 0, 8);
2282 memset(ablkctx->key + 56, 0, 8);
2283 ablkctx->enckey_len = 64;
2284 ablkctx->key_ctx_hdr =
2285 FILL_KEY_CTX_HDR(CHCR_KEYCTX_CIPHER_KEY_SIZE_192,
2286 CHCR_KEYCTX_NO_KEY, 1,
2287 0, context_size);
2288 } else {
2289 ablkctx->key_ctx_hdr =
2290 FILL_KEY_CTX_HDR((key_len == AES_KEYSIZE_256) ?
2291 CHCR_KEYCTX_CIPHER_KEY_SIZE_128 :
2292 CHCR_KEYCTX_CIPHER_KEY_SIZE_256,
2293 CHCR_KEYCTX_NO_KEY, 1,
2294 0, context_size);
2295 }
2296 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_XTS;
2297 return 0;
2298 badkey_err:
2299 ablkctx->enckey_len = 0;
2300
2301 return err;
2302 }
2303
2304 static int chcr_sha_init(struct ahash_request *areq)
2305 {
2306 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
2307 struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
2308 int digestsize = crypto_ahash_digestsize(tfm);
2309
2310 req_ctx->data_len = 0;
2311 req_ctx->reqlen = 0;
2312 req_ctx->reqbfr = req_ctx->bfr1;
2313 req_ctx->skbfr = req_ctx->bfr2;
2314 copy_hash_init_values(req_ctx->partial_hash, digestsize);
2315
2316 return 0;
2317 }
2318
2319 static int chcr_sha_cra_init(struct crypto_tfm *tfm)
2320 {
2321 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
2322 sizeof(struct chcr_ahash_req_ctx));
2323 return chcr_device_init(crypto_tfm_ctx(tfm));
2324 }
2325
2326 static int chcr_hmac_init(struct ahash_request *areq)
2327 {
2328 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
2329 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(areq);
2330 struct hmac_ctx *hmacctx = HMAC_CTX(h_ctx(rtfm));
2331 unsigned int digestsize = crypto_ahash_digestsize(rtfm);
2332 unsigned int bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
2333
2334 chcr_sha_init(areq);
2335 req_ctx->data_len = bs;
2336 if (is_hmac(crypto_ahash_tfm(rtfm))) {
2337 if (digestsize == SHA224_DIGEST_SIZE)
2338 memcpy(req_ctx->partial_hash, hmacctx->ipad,
2339 SHA256_DIGEST_SIZE);
2340 else if (digestsize == SHA384_DIGEST_SIZE)
2341 memcpy(req_ctx->partial_hash, hmacctx->ipad,
2342 SHA512_DIGEST_SIZE);
2343 else
2344 memcpy(req_ctx->partial_hash, hmacctx->ipad,
2345 digestsize);
2346 }
2347 return 0;
2348 }
2349
2350 static int chcr_hmac_cra_init(struct crypto_tfm *tfm)
2351 {
2352 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
2353 struct hmac_ctx *hmacctx = HMAC_CTX(ctx);
2354 unsigned int digestsize =
2355 crypto_ahash_digestsize(__crypto_ahash_cast(tfm));
2356
2357 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
2358 sizeof(struct chcr_ahash_req_ctx));
2359 hmacctx->base_hash = chcr_alloc_shash(digestsize);
2360 if (IS_ERR(hmacctx->base_hash))
2361 return PTR_ERR(hmacctx->base_hash);
2362 return chcr_device_init(crypto_tfm_ctx(tfm));
2363 }
2364
2365 static void chcr_hmac_cra_exit(struct crypto_tfm *tfm)
2366 {
2367 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
2368 struct hmac_ctx *hmacctx = HMAC_CTX(ctx);
2369
2370 if (hmacctx->base_hash) {
2371 chcr_free_shash(hmacctx->base_hash);
2372 hmacctx->base_hash = NULL;
2373 }
2374 }
2375
2376 inline void chcr_aead_common_exit(struct aead_request *req)
2377 {
2378 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2379 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2380 struct uld_ctx *u_ctx = ULD_CTX(a_ctx(tfm));
2381
2382 chcr_aead_dma_unmap(&u_ctx->lldi.pdev->dev, req, reqctx->op);
2383 }
2384
2385 static int chcr_aead_common_init(struct aead_request *req)
2386 {
2387 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2388 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2389 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2390 unsigned int authsize = crypto_aead_authsize(tfm);
2391 int error = -EINVAL;
2392
2393 /* validate key size */
2394 if (aeadctx->enckey_len == 0)
2395 goto err;
2396 if (reqctx->op && req->cryptlen < authsize)
2397 goto err;
2398 if (reqctx->b0_len)
2399 reqctx->scratch_pad = reqctx->iv + IV;
2400 else
2401 reqctx->scratch_pad = NULL;
2402
2403 error = chcr_aead_dma_map(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev, req,
2404 reqctx->op);
2405 if (error) {
2406 error = -ENOMEM;
2407 goto err;
2408 }
2409
2410 return 0;
2411 err:
2412 return error;
2413 }
2414
2415 static int chcr_aead_need_fallback(struct aead_request *req, int dst_nents,
2416 int aadmax, int wrlen,
2417 unsigned short op_type)
2418 {
2419 unsigned int authsize = crypto_aead_authsize(crypto_aead_reqtfm(req));
2420
2421 if (((req->cryptlen - (op_type ? authsize : 0)) == 0) ||
2422 dst_nents > MAX_DSGL_ENT ||
2423 (req->assoclen > aadmax) ||
2424 (wrlen > SGE_MAX_WR_LEN))
2425 return 1;
2426 return 0;
2427 }
2428
2429 static int chcr_aead_fallback(struct aead_request *req, unsigned short op_type)
2430 {
2431 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2432 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2433 struct aead_request *subreq = aead_request_ctx(req);
2434
2435 aead_request_set_tfm(subreq, aeadctx->sw_cipher);
2436 aead_request_set_callback(subreq, req->base.flags,
2437 req->base.complete, req->base.data);
2438 aead_request_set_crypt(subreq, req->src, req->dst, req->cryptlen,
2439 req->iv);
2440 aead_request_set_ad(subreq, req->assoclen);
2441 return op_type ? crypto_aead_decrypt(subreq) :
2442 crypto_aead_encrypt(subreq);
2443 }
2444
2445 static struct sk_buff *create_authenc_wr(struct aead_request *req,
2446 unsigned short qid,
2447 int size)
2448 {
2449 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2450 struct chcr_context *ctx = a_ctx(tfm);
2451 struct chcr_aead_ctx *aeadctx = AEAD_CTX(ctx);
2452 struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx);
2453 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2454 struct sk_buff *skb = NULL;
2455 struct chcr_wr *chcr_req;
2456 struct cpl_rx_phys_dsgl *phys_cpl;
2457 struct ulptx_sgl *ulptx;
2458 unsigned int transhdr_len;
2459 unsigned int dst_size = 0, temp, subtype = get_aead_subtype(tfm);
2460 unsigned int kctx_len = 0, dnents, snents;
2461 unsigned int authsize = crypto_aead_authsize(tfm);
2462 int error = -EINVAL;
2463 u8 *ivptr;
2464 int null = 0;
2465 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
2466 GFP_ATOMIC;
2467 struct adapter *adap = padap(ctx->dev);
2468 unsigned int rx_channel_id = reqctx->rxqidx / ctx->rxq_perchan;
2469
2470 if (req->cryptlen == 0)
2471 return NULL;
2472
2473 reqctx->b0_len = 0;
2474 error = chcr_aead_common_init(req);
2475 if (error)
2476 return ERR_PTR(error);
2477
2478 if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL ||
2479 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
2480 null = 1;
2481 }
2482 dnents = sg_nents_xlen(req->dst, req->assoclen + req->cryptlen +
2483 (reqctx->op ? -authsize : authsize), CHCR_DST_SG_SIZE, 0);
2484 dnents += MIN_AUTH_SG; // For IV
2485 snents = sg_nents_xlen(req->src, req->assoclen + req->cryptlen,
2486 CHCR_SRC_SG_SIZE, 0);
2487 dst_size = get_space_for_phys_dsgl(dnents);
2488 kctx_len = (KEY_CONTEXT_CTX_LEN_G(ntohl(aeadctx->key_ctx_hdr)) << 4)
2489 - sizeof(chcr_req->key_ctx);
2490 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
2491 reqctx->imm = (transhdr_len + req->assoclen + req->cryptlen) <
2492 SGE_MAX_WR_LEN;
2493 temp = reqctx->imm ? roundup(req->assoclen + req->cryptlen, 16)
2494 : (sgl_len(snents) * 8);
2495 transhdr_len += temp;
2496 transhdr_len = roundup(transhdr_len, 16);
2497
2498 if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE,
2499 transhdr_len, reqctx->op)) {
2500 atomic_inc(&adap->chcr_stats.fallback);
2501 chcr_aead_common_exit(req);
2502 return ERR_PTR(chcr_aead_fallback(req, reqctx->op));
2503 }
2504 skb = alloc_skb(transhdr_len, flags);
2505 if (!skb) {
2506 error = -ENOMEM;
2507 goto err;
2508 }
2509
2510 chcr_req = __skb_put_zero(skb, transhdr_len);
2511
2512 temp = (reqctx->op == CHCR_ENCRYPT_OP) ? 0 : authsize;
2513
2514 /*
2515 * Input order is AAD,IV and Payload. where IV should be included as
2516 * the part of authdata. All other fields should be filled according
2517 * to the hardware spec
2518 */
2519 chcr_req->sec_cpl.op_ivinsrtofst =
2520 FILL_SEC_CPL_OP_IVINSR(rx_channel_id, 2, 1);
2521 chcr_req->sec_cpl.pldlen = htonl(req->assoclen + IV + req->cryptlen);
2522 chcr_req->sec_cpl.aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI(
2523 null ? 0 : 1 + IV,
2524 null ? 0 : IV + req->assoclen,
2525 req->assoclen + IV + 1,
2526 (temp & 0x1F0) >> 4);
2527 chcr_req->sec_cpl.cipherstop_lo_authinsert = FILL_SEC_CPL_AUTHINSERT(
2528 temp & 0xF,
2529 null ? 0 : req->assoclen + IV + 1,
2530 temp, temp);
2531 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL ||
2532 subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA)
2533 temp = CHCR_SCMD_CIPHER_MODE_AES_CTR;
2534 else
2535 temp = CHCR_SCMD_CIPHER_MODE_AES_CBC;
2536 chcr_req->sec_cpl.seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(reqctx->op,
2537 (reqctx->op == CHCR_ENCRYPT_OP) ? 1 : 0,
2538 temp,
2539 actx->auth_mode, aeadctx->hmac_ctrl,
2540 IV >> 1);
2541 chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1,
2542 0, 0, dst_size);
2543
2544 chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr;
2545 if (reqctx->op == CHCR_ENCRYPT_OP ||
2546 subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
2547 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL)
2548 memcpy(chcr_req->key_ctx.key, aeadctx->key,
2549 aeadctx->enckey_len);
2550 else
2551 memcpy(chcr_req->key_ctx.key, actx->dec_rrkey,
2552 aeadctx->enckey_len);
2553
2554 memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16),
2555 actx->h_iopad, kctx_len - roundup(aeadctx->enckey_len, 16));
2556 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
2557 ivptr = (u8 *)(phys_cpl + 1) + dst_size;
2558 ulptx = (struct ulptx_sgl *)(ivptr + IV);
2559 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
2560 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
2561 memcpy(ivptr, aeadctx->nonce, CTR_RFC3686_NONCE_SIZE);
2562 memcpy(ivptr + CTR_RFC3686_NONCE_SIZE, req->iv,
2563 CTR_RFC3686_IV_SIZE);
2564 *(__be32 *)(ivptr + CTR_RFC3686_NONCE_SIZE +
2565 CTR_RFC3686_IV_SIZE) = cpu_to_be32(1);
2566 } else {
2567 memcpy(ivptr, req->iv, IV);
2568 }
2569 chcr_add_aead_dst_ent(req, phys_cpl, qid);
2570 chcr_add_aead_src_ent(req, ulptx);
2571 atomic_inc(&adap->chcr_stats.cipher_rqst);
2572 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + IV +
2573 kctx_len + (reqctx->imm ? (req->assoclen + req->cryptlen) : 0);
2574 create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, size,
2575 transhdr_len, temp, 0);
2576 reqctx->skb = skb;
2577
2578 return skb;
2579 err:
2580 chcr_aead_common_exit(req);
2581
2582 return ERR_PTR(error);
2583 }
2584
2585 int chcr_aead_dma_map(struct device *dev,
2586 struct aead_request *req,
2587 unsigned short op_type)
2588 {
2589 int error;
2590 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2591 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2592 unsigned int authsize = crypto_aead_authsize(tfm);
2593 int dst_size;
2594
2595 dst_size = req->assoclen + req->cryptlen + (op_type ?
2596 0 : authsize);
2597 if (!req->cryptlen || !dst_size)
2598 return 0;
2599 reqctx->iv_dma = dma_map_single(dev, reqctx->iv, (IV + reqctx->b0_len),
2600 DMA_BIDIRECTIONAL);
2601 if (dma_mapping_error(dev, reqctx->iv_dma))
2602 return -ENOMEM;
2603 if (reqctx->b0_len)
2604 reqctx->b0_dma = reqctx->iv_dma + IV;
2605 else
2606 reqctx->b0_dma = 0;
2607 if (req->src == req->dst) {
2608 error = dma_map_sg(dev, req->src,
2609 sg_nents_for_len(req->src, dst_size),
2610 DMA_BIDIRECTIONAL);
2611 if (!error)
2612 goto err;
2613 } else {
2614 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2615 DMA_TO_DEVICE);
2616 if (!error)
2617 goto err;
2618 error = dma_map_sg(dev, req->dst, sg_nents(req->dst),
2619 DMA_FROM_DEVICE);
2620 if (!error) {
2621 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2622 DMA_TO_DEVICE);
2623 goto err;
2624 }
2625 }
2626
2627 return 0;
2628 err:
2629 dma_unmap_single(dev, reqctx->iv_dma, IV, DMA_BIDIRECTIONAL);
2630 return -ENOMEM;
2631 }
2632
2633 void chcr_aead_dma_unmap(struct device *dev,
2634 struct aead_request *req,
2635 unsigned short op_type)
2636 {
2637 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2638 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2639 unsigned int authsize = crypto_aead_authsize(tfm);
2640 int dst_size;
2641
2642 dst_size = req->assoclen + req->cryptlen + (op_type ?
2643 0 : authsize);
2644 if (!req->cryptlen || !dst_size)
2645 return;
2646
2647 dma_unmap_single(dev, reqctx->iv_dma, (IV + reqctx->b0_len),
2648 DMA_BIDIRECTIONAL);
2649 if (req->src == req->dst) {
2650 dma_unmap_sg(dev, req->src,
2651 sg_nents_for_len(req->src, dst_size),
2652 DMA_BIDIRECTIONAL);
2653 } else {
2654 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2655 DMA_TO_DEVICE);
2656 dma_unmap_sg(dev, req->dst, sg_nents(req->dst),
2657 DMA_FROM_DEVICE);
2658 }
2659 }
2660
2661 void chcr_add_aead_src_ent(struct aead_request *req,
2662 struct ulptx_sgl *ulptx)
2663 {
2664 struct ulptx_walk ulp_walk;
2665 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2666
2667 if (reqctx->imm) {
2668 u8 *buf = (u8 *)ulptx;
2669
2670 if (reqctx->b0_len) {
2671 memcpy(buf, reqctx->scratch_pad, reqctx->b0_len);
2672 buf += reqctx->b0_len;
2673 }
2674 sg_pcopy_to_buffer(req->src, sg_nents(req->src),
2675 buf, req->cryptlen + req->assoclen, 0);
2676 } else {
2677 ulptx_walk_init(&ulp_walk, ulptx);
2678 if (reqctx->b0_len)
2679 ulptx_walk_add_page(&ulp_walk, reqctx->b0_len,
2680 reqctx->b0_dma);
2681 ulptx_walk_add_sg(&ulp_walk, req->src, req->cryptlen +
2682 req->assoclen, 0);
2683 ulptx_walk_end(&ulp_walk);
2684 }
2685 }
2686
2687 void chcr_add_aead_dst_ent(struct aead_request *req,
2688 struct cpl_rx_phys_dsgl *phys_cpl,
2689 unsigned short qid)
2690 {
2691 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2692 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2693 struct dsgl_walk dsgl_walk;
2694 unsigned int authsize = crypto_aead_authsize(tfm);
2695 struct chcr_context *ctx = a_ctx(tfm);
2696 u32 temp;
2697 unsigned int rx_channel_id = reqctx->rxqidx / ctx->rxq_perchan;
2698
2699 dsgl_walk_init(&dsgl_walk, phys_cpl);
2700 dsgl_walk_add_page(&dsgl_walk, IV + reqctx->b0_len, reqctx->iv_dma);
2701 temp = req->assoclen + req->cryptlen +
2702 (reqctx->op ? -authsize : authsize);
2703 dsgl_walk_add_sg(&dsgl_walk, req->dst, temp, 0);
2704 dsgl_walk_end(&dsgl_walk, qid, rx_channel_id);
2705 }
2706
2707 void chcr_add_cipher_src_ent(struct skcipher_request *req,
2708 void *ulptx,
2709 struct cipher_wr_param *wrparam)
2710 {
2711 struct ulptx_walk ulp_walk;
2712 struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req);
2713 u8 *buf = ulptx;
2714
2715 memcpy(buf, reqctx->iv, IV);
2716 buf += IV;
2717 if (reqctx->imm) {
2718 sg_pcopy_to_buffer(req->src, sg_nents(req->src),
2719 buf, wrparam->bytes, reqctx->processed);
2720 } else {
2721 ulptx_walk_init(&ulp_walk, (struct ulptx_sgl *)buf);
2722 ulptx_walk_add_sg(&ulp_walk, reqctx->srcsg, wrparam->bytes,
2723 reqctx->src_ofst);
2724 reqctx->srcsg = ulp_walk.last_sg;
2725 reqctx->src_ofst = ulp_walk.last_sg_len;
2726 ulptx_walk_end(&ulp_walk);
2727 }
2728 }
2729
2730 void chcr_add_cipher_dst_ent(struct skcipher_request *req,
2731 struct cpl_rx_phys_dsgl *phys_cpl,
2732 struct cipher_wr_param *wrparam,
2733 unsigned short qid)
2734 {
2735 struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req);
2736 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(wrparam->req);
2737 struct chcr_context *ctx = c_ctx(tfm);
2738 struct dsgl_walk dsgl_walk;
2739 unsigned int rx_channel_id = reqctx->rxqidx / ctx->rxq_perchan;
2740
2741 dsgl_walk_init(&dsgl_walk, phys_cpl);
2742 dsgl_walk_add_sg(&dsgl_walk, reqctx->dstsg, wrparam->bytes,
2743 reqctx->dst_ofst);
2744 reqctx->dstsg = dsgl_walk.last_sg;
2745 reqctx->dst_ofst = dsgl_walk.last_sg_len;
2746 dsgl_walk_end(&dsgl_walk, qid, rx_channel_id);
2747 }
2748
2749 void chcr_add_hash_src_ent(struct ahash_request *req,
2750 struct ulptx_sgl *ulptx,
2751 struct hash_wr_param *param)
2752 {
2753 struct ulptx_walk ulp_walk;
2754 struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req);
2755
2756 if (reqctx->hctx_wr.imm) {
2757 u8 *buf = (u8 *)ulptx;
2758
2759 if (param->bfr_len) {
2760 memcpy(buf, reqctx->reqbfr, param->bfr_len);
2761 buf += param->bfr_len;
2762 }
2763
2764 sg_pcopy_to_buffer(reqctx->hctx_wr.srcsg,
2765 sg_nents(reqctx->hctx_wr.srcsg), buf,
2766 param->sg_len, 0);
2767 } else {
2768 ulptx_walk_init(&ulp_walk, ulptx);
2769 if (param->bfr_len)
2770 ulptx_walk_add_page(&ulp_walk, param->bfr_len,
2771 reqctx->hctx_wr.dma_addr);
2772 ulptx_walk_add_sg(&ulp_walk, reqctx->hctx_wr.srcsg,
2773 param->sg_len, reqctx->hctx_wr.src_ofst);
2774 reqctx->hctx_wr.srcsg = ulp_walk.last_sg;
2775 reqctx->hctx_wr.src_ofst = ulp_walk.last_sg_len;
2776 ulptx_walk_end(&ulp_walk);
2777 }
2778 }
2779
2780 int chcr_hash_dma_map(struct device *dev,
2781 struct ahash_request *req)
2782 {
2783 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
2784 int error = 0;
2785
2786 if (!req->nbytes)
2787 return 0;
2788 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2789 DMA_TO_DEVICE);
2790 if (!error)
2791 return -ENOMEM;
2792 req_ctx->hctx_wr.is_sg_map = 1;
2793 return 0;
2794 }
2795
2796 void chcr_hash_dma_unmap(struct device *dev,
2797 struct ahash_request *req)
2798 {
2799 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
2800
2801 if (!req->nbytes)
2802 return;
2803
2804 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2805 DMA_TO_DEVICE);
2806 req_ctx->hctx_wr.is_sg_map = 0;
2807
2808 }
2809
2810 int chcr_cipher_dma_map(struct device *dev,
2811 struct skcipher_request *req)
2812 {
2813 int error;
2814
2815 if (req->src == req->dst) {
2816 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2817 DMA_BIDIRECTIONAL);
2818 if (!error)
2819 goto err;
2820 } else {
2821 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2822 DMA_TO_DEVICE);
2823 if (!error)
2824 goto err;
2825 error = dma_map_sg(dev, req->dst, sg_nents(req->dst),
2826 DMA_FROM_DEVICE);
2827 if (!error) {
2828 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2829 DMA_TO_DEVICE);
2830 goto err;
2831 }
2832 }
2833
2834 return 0;
2835 err:
2836 return -ENOMEM;
2837 }
2838
2839 void chcr_cipher_dma_unmap(struct device *dev,
2840 struct skcipher_request *req)
2841 {
2842 if (req->src == req->dst) {
2843 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2844 DMA_BIDIRECTIONAL);
2845 } else {
2846 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2847 DMA_TO_DEVICE);
2848 dma_unmap_sg(dev, req->dst, sg_nents(req->dst),
2849 DMA_FROM_DEVICE);
2850 }
2851 }
2852
2853 static int set_msg_len(u8 *block, unsigned int msglen, int csize)
2854 {
2855 __be32 data;
2856
2857 memset(block, 0, csize);
2858 block += csize;
2859
2860 if (csize >= 4)
2861 csize = 4;
2862 else if (msglen > (unsigned int)(1 << (8 * csize)))
2863 return -EOVERFLOW;
2864
2865 data = cpu_to_be32(msglen);
2866 memcpy(block - csize, (u8 *)&data + 4 - csize, csize);
2867
2868 return 0;
2869 }
2870
2871 static int generate_b0(struct aead_request *req, u8 *ivptr,
2872 unsigned short op_type)
2873 {
2874 unsigned int l, lp, m;
2875 int rc;
2876 struct crypto_aead *aead = crypto_aead_reqtfm(req);
2877 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2878 u8 *b0 = reqctx->scratch_pad;
2879
2880 m = crypto_aead_authsize(aead);
2881
2882 memcpy(b0, ivptr, 16);
2883
2884 lp = b0[0];
2885 l = lp + 1;
2886
2887 /* set m, bits 3-5 */
2888 *b0 |= (8 * ((m - 2) / 2));
2889
2890 /* set adata, bit 6, if associated data is used */
2891 if (req->assoclen)
2892 *b0 |= 64;
2893 rc = set_msg_len(b0 + 16 - l,
2894 (op_type == CHCR_DECRYPT_OP) ?
2895 req->cryptlen - m : req->cryptlen, l);
2896
2897 return rc;
2898 }
2899
2900 static inline int crypto_ccm_check_iv(const u8 *iv)
2901 {
2902 /* 2 <= L <= 8, so 1 <= L' <= 7. */
2903 if (iv[0] < 1 || iv[0] > 7)
2904 return -EINVAL;
2905
2906 return 0;
2907 }
2908
2909 static int ccm_format_packet(struct aead_request *req,
2910 u8 *ivptr,
2911 unsigned int sub_type,
2912 unsigned short op_type,
2913 unsigned int assoclen)
2914 {
2915 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2916 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2917 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2918 int rc = 0;
2919
2920 if (sub_type == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) {
2921 ivptr[0] = 3;
2922 memcpy(ivptr + 1, &aeadctx->salt[0], 3);
2923 memcpy(ivptr + 4, req->iv, 8);
2924 memset(ivptr + 12, 0, 4);
2925 } else {
2926 memcpy(ivptr, req->iv, 16);
2927 }
2928 if (assoclen)
2929 put_unaligned_be16(assoclen, &reqctx->scratch_pad[16]);
2930
2931 rc = generate_b0(req, ivptr, op_type);
2932 /* zero the ctr value */
2933 memset(ivptr + 15 - ivptr[0], 0, ivptr[0] + 1);
2934 return rc;
2935 }
2936
2937 static void fill_sec_cpl_for_aead(struct cpl_tx_sec_pdu *sec_cpl,
2938 unsigned int dst_size,
2939 struct aead_request *req,
2940 unsigned short op_type)
2941 {
2942 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2943 struct chcr_context *ctx = a_ctx(tfm);
2944 struct chcr_aead_ctx *aeadctx = AEAD_CTX(ctx);
2945 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2946 unsigned int cipher_mode = CHCR_SCMD_CIPHER_MODE_AES_CCM;
2947 unsigned int mac_mode = CHCR_SCMD_AUTH_MODE_CBCMAC;
2948 unsigned int rx_channel_id = reqctx->rxqidx / ctx->rxq_perchan;
2949 unsigned int ccm_xtra;
2950 unsigned int tag_offset = 0, auth_offset = 0;
2951 unsigned int assoclen;
2952
2953 if (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309)
2954 assoclen = req->assoclen - 8;
2955 else
2956 assoclen = req->assoclen;
2957 ccm_xtra = CCM_B0_SIZE +
2958 ((assoclen) ? CCM_AAD_FIELD_SIZE : 0);
2959
2960 auth_offset = req->cryptlen ?
2961 (req->assoclen + IV + 1 + ccm_xtra) : 0;
2962 if (op_type == CHCR_DECRYPT_OP) {
2963 if (crypto_aead_authsize(tfm) != req->cryptlen)
2964 tag_offset = crypto_aead_authsize(tfm);
2965 else
2966 auth_offset = 0;
2967 }
2968
2969 sec_cpl->op_ivinsrtofst = FILL_SEC_CPL_OP_IVINSR(rx_channel_id, 2, 1);
2970 sec_cpl->pldlen =
2971 htonl(req->assoclen + IV + req->cryptlen + ccm_xtra);
2972 /* For CCM there wil be b0 always. So AAD start will be 1 always */
2973 sec_cpl->aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI(
2974 1 + IV, IV + assoclen + ccm_xtra,
2975 req->assoclen + IV + 1 + ccm_xtra, 0);
2976
2977 sec_cpl->cipherstop_lo_authinsert = FILL_SEC_CPL_AUTHINSERT(0,
2978 auth_offset, tag_offset,
2979 (op_type == CHCR_ENCRYPT_OP) ? 0 :
2980 crypto_aead_authsize(tfm));
2981 sec_cpl->seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(op_type,
2982 (op_type == CHCR_ENCRYPT_OP) ? 0 : 1,
2983 cipher_mode, mac_mode,
2984 aeadctx->hmac_ctrl, IV >> 1);
2985
2986 sec_cpl->ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1, 0,
2987 0, dst_size);
2988 }
2989
2990 static int aead_ccm_validate_input(unsigned short op_type,
2991 struct aead_request *req,
2992 struct chcr_aead_ctx *aeadctx,
2993 unsigned int sub_type)
2994 {
2995 if (sub_type != CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) {
2996 if (crypto_ccm_check_iv(req->iv)) {
2997 pr_err("CCM: IV check fails\n");
2998 return -EINVAL;
2999 }
3000 } else {
3001 if (req->assoclen != 16 && req->assoclen != 20) {
3002 pr_err("RFC4309: Invalid AAD length %d\n",
3003 req->assoclen);
3004 return -EINVAL;
3005 }
3006 }
3007 return 0;
3008 }
3009
3010 static struct sk_buff *create_aead_ccm_wr(struct aead_request *req,
3011 unsigned short qid,
3012 int size)
3013 {
3014 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
3015 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3016 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
3017 struct sk_buff *skb = NULL;
3018 struct chcr_wr *chcr_req;
3019 struct cpl_rx_phys_dsgl *phys_cpl;
3020 struct ulptx_sgl *ulptx;
3021 unsigned int transhdr_len;
3022 unsigned int dst_size = 0, kctx_len, dnents, temp, snents;
3023 unsigned int sub_type, assoclen = req->assoclen;
3024 unsigned int authsize = crypto_aead_authsize(tfm);
3025 int error = -EINVAL;
3026 u8 *ivptr;
3027 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
3028 GFP_ATOMIC;
3029 struct adapter *adap = padap(a_ctx(tfm)->dev);
3030
3031 sub_type = get_aead_subtype(tfm);
3032 if (sub_type == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309)
3033 assoclen -= 8;
3034 reqctx->b0_len = CCM_B0_SIZE + (assoclen ? CCM_AAD_FIELD_SIZE : 0);
3035 error = chcr_aead_common_init(req);
3036 if (error)
3037 return ERR_PTR(error);
3038
3039 error = aead_ccm_validate_input(reqctx->op, req, aeadctx, sub_type);
3040 if (error)
3041 goto err;
3042 dnents = sg_nents_xlen(req->dst, req->assoclen + req->cryptlen
3043 + (reqctx->op ? -authsize : authsize),
3044 CHCR_DST_SG_SIZE, 0);
3045 dnents += MIN_CCM_SG; // For IV and B0
3046 dst_size = get_space_for_phys_dsgl(dnents);
3047 snents = sg_nents_xlen(req->src, req->assoclen + req->cryptlen,
3048 CHCR_SRC_SG_SIZE, 0);
3049 snents += MIN_CCM_SG; //For B0
3050 kctx_len = roundup(aeadctx->enckey_len, 16) * 2;
3051 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
3052 reqctx->imm = (transhdr_len + req->assoclen + req->cryptlen +
3053 reqctx->b0_len) <= SGE_MAX_WR_LEN;
3054 temp = reqctx->imm ? roundup(req->assoclen + req->cryptlen +
3055 reqctx->b0_len, 16) :
3056 (sgl_len(snents) * 8);
3057 transhdr_len += temp;
3058 transhdr_len = roundup(transhdr_len, 16);
3059
3060 if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE -
3061 reqctx->b0_len, transhdr_len, reqctx->op)) {
3062 atomic_inc(&adap->chcr_stats.fallback);
3063 chcr_aead_common_exit(req);
3064 return ERR_PTR(chcr_aead_fallback(req, reqctx->op));
3065 }
3066 skb = alloc_skb(transhdr_len, flags);
3067
3068 if (!skb) {
3069 error = -ENOMEM;
3070 goto err;
3071 }
3072
3073 chcr_req = __skb_put_zero(skb, transhdr_len);
3074
3075 fill_sec_cpl_for_aead(&chcr_req->sec_cpl, dst_size, req, reqctx->op);
3076
3077 chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr;
3078 memcpy(chcr_req->key_ctx.key, aeadctx->key, aeadctx->enckey_len);
3079 memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16),
3080 aeadctx->key, aeadctx->enckey_len);
3081
3082 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
3083 ivptr = (u8 *)(phys_cpl + 1) + dst_size;
3084 ulptx = (struct ulptx_sgl *)(ivptr + IV);
3085 error = ccm_format_packet(req, ivptr, sub_type, reqctx->op, assoclen);
3086 if (error)
3087 goto dstmap_fail;
3088 chcr_add_aead_dst_ent(req, phys_cpl, qid);
3089 chcr_add_aead_src_ent(req, ulptx);
3090
3091 atomic_inc(&adap->chcr_stats.aead_rqst);
3092 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + IV +
3093 kctx_len + (reqctx->imm ? (req->assoclen + req->cryptlen +
3094 reqctx->b0_len) : 0);
3095 create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, 0,
3096 transhdr_len, temp, 0);
3097 reqctx->skb = skb;
3098
3099 return skb;
3100 dstmap_fail:
3101 kfree_skb(skb);
3102 err:
3103 chcr_aead_common_exit(req);
3104 return ERR_PTR(error);
3105 }
3106
3107 static struct sk_buff *create_gcm_wr(struct aead_request *req,
3108 unsigned short qid,
3109 int size)
3110 {
3111 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
3112 struct chcr_context *ctx = a_ctx(tfm);
3113 struct chcr_aead_ctx *aeadctx = AEAD_CTX(ctx);
3114 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
3115 struct sk_buff *skb = NULL;
3116 struct chcr_wr *chcr_req;
3117 struct cpl_rx_phys_dsgl *phys_cpl;
3118 struct ulptx_sgl *ulptx;
3119 unsigned int transhdr_len, dnents = 0, snents;
3120 unsigned int dst_size = 0, temp = 0, kctx_len, assoclen = req->assoclen;
3121 unsigned int authsize = crypto_aead_authsize(tfm);
3122 int error = -EINVAL;
3123 u8 *ivptr;
3124 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
3125 GFP_ATOMIC;
3126 struct adapter *adap = padap(ctx->dev);
3127 unsigned int rx_channel_id = reqctx->rxqidx / ctx->rxq_perchan;
3128
3129 if (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106)
3130 assoclen = req->assoclen - 8;
3131
3132 reqctx->b0_len = 0;
3133 error = chcr_aead_common_init(req);
3134 if (error)
3135 return ERR_PTR(error);
3136 dnents = sg_nents_xlen(req->dst, req->assoclen + req->cryptlen +
3137 (reqctx->op ? -authsize : authsize),
3138 CHCR_DST_SG_SIZE, 0);
3139 snents = sg_nents_xlen(req->src, req->assoclen + req->cryptlen,
3140 CHCR_SRC_SG_SIZE, 0);
3141 dnents += MIN_GCM_SG; // For IV
3142 dst_size = get_space_for_phys_dsgl(dnents);
3143 kctx_len = roundup(aeadctx->enckey_len, 16) + AEAD_H_SIZE;
3144 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
3145 reqctx->imm = (transhdr_len + req->assoclen + req->cryptlen) <=
3146 SGE_MAX_WR_LEN;
3147 temp = reqctx->imm ? roundup(req->assoclen + req->cryptlen, 16) :
3148 (sgl_len(snents) * 8);
3149 transhdr_len += temp;
3150 transhdr_len = roundup(transhdr_len, 16);
3151 if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE,
3152 transhdr_len, reqctx->op)) {
3153
3154 atomic_inc(&adap->chcr_stats.fallback);
3155 chcr_aead_common_exit(req);
3156 return ERR_PTR(chcr_aead_fallback(req, reqctx->op));
3157 }
3158 skb = alloc_skb(transhdr_len, flags);
3159 if (!skb) {
3160 error = -ENOMEM;
3161 goto err;
3162 }
3163
3164 chcr_req = __skb_put_zero(skb, transhdr_len);
3165
3166 //Offset of tag from end
3167 temp = (reqctx->op == CHCR_ENCRYPT_OP) ? 0 : authsize;
3168 chcr_req->sec_cpl.op_ivinsrtofst = FILL_SEC_CPL_OP_IVINSR(
3169 rx_channel_id, 2, 1);
3170 chcr_req->sec_cpl.pldlen =
3171 htonl(req->assoclen + IV + req->cryptlen);
3172 chcr_req->sec_cpl.aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI(
3173 assoclen ? 1 + IV : 0,
3174 assoclen ? IV + assoclen : 0,
3175 req->assoclen + IV + 1, 0);
3176 chcr_req->sec_cpl.cipherstop_lo_authinsert =
3177 FILL_SEC_CPL_AUTHINSERT(0, req->assoclen + IV + 1,
3178 temp, temp);
3179 chcr_req->sec_cpl.seqno_numivs =
3180 FILL_SEC_CPL_SCMD0_SEQNO(reqctx->op, (reqctx->op ==
3181 CHCR_ENCRYPT_OP) ? 1 : 0,
3182 CHCR_SCMD_CIPHER_MODE_AES_GCM,
3183 CHCR_SCMD_AUTH_MODE_GHASH,
3184 aeadctx->hmac_ctrl, IV >> 1);
3185 chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1,
3186 0, 0, dst_size);
3187 chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr;
3188 memcpy(chcr_req->key_ctx.key, aeadctx->key, aeadctx->enckey_len);
3189 memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16),
3190 GCM_CTX(aeadctx)->ghash_h, AEAD_H_SIZE);
3191
3192 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
3193 ivptr = (u8 *)(phys_cpl + 1) + dst_size;
3194 /* prepare a 16 byte iv */
3195 /* S A L T | IV | 0x00000001 */
3196 if (get_aead_subtype(tfm) ==
3197 CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106) {
3198 memcpy(ivptr, aeadctx->salt, 4);
3199 memcpy(ivptr + 4, req->iv, GCM_RFC4106_IV_SIZE);
3200 } else {
3201 memcpy(ivptr, req->iv, GCM_AES_IV_SIZE);
3202 }
3203 put_unaligned_be32(0x01, &ivptr[12]);
3204 ulptx = (struct ulptx_sgl *)(ivptr + 16);
3205
3206 chcr_add_aead_dst_ent(req, phys_cpl, qid);
3207 chcr_add_aead_src_ent(req, ulptx);
3208 atomic_inc(&adap->chcr_stats.aead_rqst);
3209 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + IV +
3210 kctx_len + (reqctx->imm ? (req->assoclen + req->cryptlen) : 0);
3211 create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, size,
3212 transhdr_len, temp, reqctx->verify);
3213 reqctx->skb = skb;
3214 return skb;
3215
3216 err:
3217 chcr_aead_common_exit(req);
3218 return ERR_PTR(error);
3219 }
3220
3221
3222
3223 static int chcr_aead_cra_init(struct crypto_aead *tfm)
3224 {
3225 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3226 struct aead_alg *alg = crypto_aead_alg(tfm);
3227
3228 aeadctx->sw_cipher = crypto_alloc_aead(alg->base.cra_name, 0,
3229 CRYPTO_ALG_NEED_FALLBACK |
3230 CRYPTO_ALG_ASYNC);
3231 if (IS_ERR(aeadctx->sw_cipher))
3232 return PTR_ERR(aeadctx->sw_cipher);
3233 crypto_aead_set_reqsize(tfm, max(sizeof(struct chcr_aead_reqctx),
3234 sizeof(struct aead_request) +
3235 crypto_aead_reqsize(aeadctx->sw_cipher)));
3236 return chcr_device_init(a_ctx(tfm));
3237 }
3238
3239 static void chcr_aead_cra_exit(struct crypto_aead *tfm)
3240 {
3241 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3242
3243 crypto_free_aead(aeadctx->sw_cipher);
3244 }
3245
3246 static int chcr_authenc_null_setauthsize(struct crypto_aead *tfm,
3247 unsigned int authsize)
3248 {
3249 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3250
3251 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NOP;
3252 aeadctx->mayverify = VERIFY_HW;
3253 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
3254 }
3255 static int chcr_authenc_setauthsize(struct crypto_aead *tfm,
3256 unsigned int authsize)
3257 {
3258 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3259 u32 maxauth = crypto_aead_maxauthsize(tfm);
3260
3261 /*SHA1 authsize in ipsec is 12 instead of 10 i.e maxauthsize / 2 is not
3262 * true for sha1. authsize == 12 condition should be before
3263 * authsize == (maxauth >> 1)
3264 */
3265 if (authsize == ICV_4) {
3266 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1;
3267 aeadctx->mayverify = VERIFY_HW;
3268 } else if (authsize == ICV_6) {
3269 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL2;
3270 aeadctx->mayverify = VERIFY_HW;
3271 } else if (authsize == ICV_10) {
3272 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_TRUNC_RFC4366;
3273 aeadctx->mayverify = VERIFY_HW;
3274 } else if (authsize == ICV_12) {
3275 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
3276 aeadctx->mayverify = VERIFY_HW;
3277 } else if (authsize == ICV_14) {
3278 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3;
3279 aeadctx->mayverify = VERIFY_HW;
3280 } else if (authsize == (maxauth >> 1)) {
3281 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
3282 aeadctx->mayverify = VERIFY_HW;
3283 } else if (authsize == maxauth) {
3284 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3285 aeadctx->mayverify = VERIFY_HW;
3286 } else {
3287 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3288 aeadctx->mayverify = VERIFY_SW;
3289 }
3290 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
3291 }
3292
3293
3294 static int chcr_gcm_setauthsize(struct crypto_aead *tfm, unsigned int authsize)
3295 {
3296 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3297
3298 switch (authsize) {
3299 case ICV_4:
3300 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1;
3301 aeadctx->mayverify = VERIFY_HW;
3302 break;
3303 case ICV_8:
3304 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
3305 aeadctx->mayverify = VERIFY_HW;
3306 break;
3307 case ICV_12:
3308 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
3309 aeadctx->mayverify = VERIFY_HW;
3310 break;
3311 case ICV_14:
3312 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3;
3313 aeadctx->mayverify = VERIFY_HW;
3314 break;
3315 case ICV_16:
3316 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3317 aeadctx->mayverify = VERIFY_HW;
3318 break;
3319 case ICV_13:
3320 case ICV_15:
3321 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3322 aeadctx->mayverify = VERIFY_SW;
3323 break;
3324 default:
3325 return -EINVAL;
3326 }
3327 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
3328 }
3329
3330 static int chcr_4106_4309_setauthsize(struct crypto_aead *tfm,
3331 unsigned int authsize)
3332 {
3333 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3334
3335 switch (authsize) {
3336 case ICV_8:
3337 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
3338 aeadctx->mayverify = VERIFY_HW;
3339 break;
3340 case ICV_12:
3341 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
3342 aeadctx->mayverify = VERIFY_HW;
3343 break;
3344 case ICV_16:
3345 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3346 aeadctx->mayverify = VERIFY_HW;
3347 break;
3348 default:
3349 return -EINVAL;
3350 }
3351 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
3352 }
3353
3354 static int chcr_ccm_setauthsize(struct crypto_aead *tfm,
3355 unsigned int authsize)
3356 {
3357 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3358
3359 switch (authsize) {
3360 case ICV_4:
3361 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1;
3362 aeadctx->mayverify = VERIFY_HW;
3363 break;
3364 case ICV_6:
3365 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL2;
3366 aeadctx->mayverify = VERIFY_HW;
3367 break;
3368 case ICV_8:
3369 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
3370 aeadctx->mayverify = VERIFY_HW;
3371 break;
3372 case ICV_10:
3373 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_TRUNC_RFC4366;
3374 aeadctx->mayverify = VERIFY_HW;
3375 break;
3376 case ICV_12:
3377 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
3378 aeadctx->mayverify = VERIFY_HW;
3379 break;
3380 case ICV_14:
3381 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3;
3382 aeadctx->mayverify = VERIFY_HW;
3383 break;
3384 case ICV_16:
3385 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3386 aeadctx->mayverify = VERIFY_HW;
3387 break;
3388 default:
3389 return -EINVAL;
3390 }
3391 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
3392 }
3393
3394 static int chcr_ccm_common_setkey(struct crypto_aead *aead,
3395 const u8 *key,
3396 unsigned int keylen)
3397 {
3398 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead));
3399 unsigned char ck_size, mk_size;
3400 int key_ctx_size = 0;
3401
3402 key_ctx_size = sizeof(struct _key_ctx) + roundup(keylen, 16) * 2;
3403 if (keylen == AES_KEYSIZE_128) {
3404 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
3405 mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_128;
3406 } else if (keylen == AES_KEYSIZE_192) {
3407 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
3408 mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_192;
3409 } else if (keylen == AES_KEYSIZE_256) {
3410 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
3411 mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256;
3412 } else {
3413 aeadctx->enckey_len = 0;
3414 return -EINVAL;
3415 }
3416 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, mk_size, 0, 0,
3417 key_ctx_size >> 4);
3418 memcpy(aeadctx->key, key, keylen);
3419 aeadctx->enckey_len = keylen;
3420
3421 return 0;
3422 }
3423
3424 static int chcr_aead_ccm_setkey(struct crypto_aead *aead,
3425 const u8 *key,
3426 unsigned int keylen)
3427 {
3428 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead));
3429 int error;
3430
3431 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3432 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead) &
3433 CRYPTO_TFM_REQ_MASK);
3434 error = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3435 if (error)
3436 return error;
3437 return chcr_ccm_common_setkey(aead, key, keylen);
3438 }
3439
3440 static int chcr_aead_rfc4309_setkey(struct crypto_aead *aead, const u8 *key,
3441 unsigned int keylen)
3442 {
3443 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead));
3444 int error;
3445
3446 if (keylen < 3) {
3447 aeadctx->enckey_len = 0;
3448 return -EINVAL;
3449 }
3450 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3451 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead) &
3452 CRYPTO_TFM_REQ_MASK);
3453 error = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3454 if (error)
3455 return error;
3456 keylen -= 3;
3457 memcpy(aeadctx->salt, key + keylen, 3);
3458 return chcr_ccm_common_setkey(aead, key, keylen);
3459 }
3460
3461 static int chcr_gcm_setkey(struct crypto_aead *aead, const u8 *key,
3462 unsigned int keylen)
3463 {
3464 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead));
3465 struct chcr_gcm_ctx *gctx = GCM_CTX(aeadctx);
3466 unsigned int ck_size;
3467 int ret = 0, key_ctx_size = 0;
3468 struct crypto_aes_ctx aes;
3469
3470 aeadctx->enckey_len = 0;
3471 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3472 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead)
3473 & CRYPTO_TFM_REQ_MASK);
3474 ret = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3475 if (ret)
3476 goto out;
3477
3478 if (get_aead_subtype(aead) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106 &&
3479 keylen > 3) {
3480 keylen -= 4; /* nonce/salt is present in the last 4 bytes */
3481 memcpy(aeadctx->salt, key + keylen, 4);
3482 }
3483 if (keylen == AES_KEYSIZE_128) {
3484 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
3485 } else if (keylen == AES_KEYSIZE_192) {
3486 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
3487 } else if (keylen == AES_KEYSIZE_256) {
3488 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
3489 } else {
3490 pr_err("GCM: Invalid key length %d\n", keylen);
3491 ret = -EINVAL;
3492 goto out;
3493 }
3494
3495 memcpy(aeadctx->key, key, keylen);
3496 aeadctx->enckey_len = keylen;
3497 key_ctx_size = sizeof(struct _key_ctx) + roundup(keylen, 16) +
3498 AEAD_H_SIZE;
3499 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size,
3500 CHCR_KEYCTX_MAC_KEY_SIZE_128,
3501 0, 0,
3502 key_ctx_size >> 4);
3503 /* Calculate the H = CIPH(K, 0 repeated 16 times).
3504 * It will go in key context
3505 */
3506 ret = aes_expandkey(&aes, key, keylen);
3507 if (ret) {
3508 aeadctx->enckey_len = 0;
3509 goto out;
3510 }
3511 memset(gctx->ghash_h, 0, AEAD_H_SIZE);
3512 aes_encrypt(&aes, gctx->ghash_h, gctx->ghash_h);
3513 memzero_explicit(&aes, sizeof(aes));
3514
3515 out:
3516 return ret;
3517 }
3518
3519 static int chcr_authenc_setkey(struct crypto_aead *authenc, const u8 *key,
3520 unsigned int keylen)
3521 {
3522 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(authenc));
3523 struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx);
3524 /* it contains auth and cipher key both*/
3525 struct crypto_authenc_keys keys;
3526 unsigned int bs, subtype;
3527 unsigned int max_authsize = crypto_aead_alg(authenc)->maxauthsize;
3528 int err = 0, i, key_ctx_len = 0;
3529 unsigned char ck_size = 0;
3530 unsigned char pad[CHCR_HASH_MAX_BLOCK_SIZE_128] = { 0 };
3531 struct crypto_shash *base_hash = ERR_PTR(-EINVAL);
3532 struct algo_param param;
3533 int align;
3534 u8 *o_ptr = NULL;
3535
3536 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3537 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(authenc)
3538 & CRYPTO_TFM_REQ_MASK);
3539 err = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3540 if (err)
3541 goto out;
3542
3543 if (crypto_authenc_extractkeys(&keys, key, keylen) != 0)
3544 goto out;
3545
3546 if (get_alg_config(&param, max_authsize)) {
3547 pr_err("chcr : Unsupported digest size\n");
3548 goto out;
3549 }
3550 subtype = get_aead_subtype(authenc);
3551 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
3552 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
3553 if (keys.enckeylen < CTR_RFC3686_NONCE_SIZE)
3554 goto out;
3555 memcpy(aeadctx->nonce, keys.enckey + (keys.enckeylen
3556 - CTR_RFC3686_NONCE_SIZE), CTR_RFC3686_NONCE_SIZE);
3557 keys.enckeylen -= CTR_RFC3686_NONCE_SIZE;
3558 }
3559 if (keys.enckeylen == AES_KEYSIZE_128) {
3560 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
3561 } else if (keys.enckeylen == AES_KEYSIZE_192) {
3562 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
3563 } else if (keys.enckeylen == AES_KEYSIZE_256) {
3564 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
3565 } else {
3566 pr_err("chcr : Unsupported cipher key\n");
3567 goto out;
3568 }
3569
3570 /* Copy only encryption key. We use authkey to generate h(ipad) and
3571 * h(opad) so authkey is not needed again. authkeylen size have the
3572 * size of the hash digest size.
3573 */
3574 memcpy(aeadctx->key, keys.enckey, keys.enckeylen);
3575 aeadctx->enckey_len = keys.enckeylen;
3576 if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_SHA ||
3577 subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL) {
3578
3579 get_aes_decrypt_key(actx->dec_rrkey, aeadctx->key,
3580 aeadctx->enckey_len << 3);
3581 }
3582 base_hash = chcr_alloc_shash(max_authsize);
3583 if (IS_ERR(base_hash)) {
3584 pr_err("chcr : Base driver cannot be loaded\n");
3585 aeadctx->enckey_len = 0;
3586 memzero_explicit(&keys, sizeof(keys));
3587 return -EINVAL;
3588 }
3589 {
3590 SHASH_DESC_ON_STACK(shash, base_hash);
3591
3592 shash->tfm = base_hash;
3593 bs = crypto_shash_blocksize(base_hash);
3594 align = KEYCTX_ALIGN_PAD(max_authsize);
3595 o_ptr = actx->h_iopad + param.result_size + align;
3596
3597 if (keys.authkeylen > bs) {
3598 err = crypto_shash_digest(shash, keys.authkey,
3599 keys.authkeylen,
3600 o_ptr);
3601 if (err) {
3602 pr_err("chcr : Base driver cannot be loaded\n");
3603 goto out;
3604 }
3605 keys.authkeylen = max_authsize;
3606 } else
3607 memcpy(o_ptr, keys.authkey, keys.authkeylen);
3608
3609 /* Compute the ipad-digest*/
3610 memset(pad + keys.authkeylen, 0, bs - keys.authkeylen);
3611 memcpy(pad, o_ptr, keys.authkeylen);
3612 for (i = 0; i < bs >> 2; i++)
3613 *((unsigned int *)pad + i) ^= IPAD_DATA;
3614
3615 if (chcr_compute_partial_hash(shash, pad, actx->h_iopad,
3616 max_authsize))
3617 goto out;
3618 /* Compute the opad-digest */
3619 memset(pad + keys.authkeylen, 0, bs - keys.authkeylen);
3620 memcpy(pad, o_ptr, keys.authkeylen);
3621 for (i = 0; i < bs >> 2; i++)
3622 *((unsigned int *)pad + i) ^= OPAD_DATA;
3623
3624 if (chcr_compute_partial_hash(shash, pad, o_ptr, max_authsize))
3625 goto out;
3626
3627 /* convert the ipad and opad digest to network order */
3628 chcr_change_order(actx->h_iopad, param.result_size);
3629 chcr_change_order(o_ptr, param.result_size);
3630 key_ctx_len = sizeof(struct _key_ctx) +
3631 roundup(keys.enckeylen, 16) +
3632 (param.result_size + align) * 2;
3633 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, param.mk_size,
3634 0, 1, key_ctx_len >> 4);
3635 actx->auth_mode = param.auth_mode;
3636 chcr_free_shash(base_hash);
3637
3638 memzero_explicit(&keys, sizeof(keys));
3639 return 0;
3640 }
3641 out:
3642 aeadctx->enckey_len = 0;
3643 memzero_explicit(&keys, sizeof(keys));
3644 if (!IS_ERR(base_hash))
3645 chcr_free_shash(base_hash);
3646 return -EINVAL;
3647 }
3648
3649 static int chcr_aead_digest_null_setkey(struct crypto_aead *authenc,
3650 const u8 *key, unsigned int keylen)
3651 {
3652 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(authenc));
3653 struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx);
3654 struct crypto_authenc_keys keys;
3655 int err;
3656 /* it contains auth and cipher key both*/
3657 unsigned int subtype;
3658 int key_ctx_len = 0;
3659 unsigned char ck_size = 0;
3660
3661 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3662 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(authenc)
3663 & CRYPTO_TFM_REQ_MASK);
3664 err = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3665 if (err)
3666 goto out;
3667
3668 if (crypto_authenc_extractkeys(&keys, key, keylen) != 0)
3669 goto out;
3670
3671 subtype = get_aead_subtype(authenc);
3672 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
3673 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
3674 if (keys.enckeylen < CTR_RFC3686_NONCE_SIZE)
3675 goto out;
3676 memcpy(aeadctx->nonce, keys.enckey + (keys.enckeylen
3677 - CTR_RFC3686_NONCE_SIZE), CTR_RFC3686_NONCE_SIZE);
3678 keys.enckeylen -= CTR_RFC3686_NONCE_SIZE;
3679 }
3680 if (keys.enckeylen == AES_KEYSIZE_128) {
3681 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
3682 } else if (keys.enckeylen == AES_KEYSIZE_192) {
3683 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
3684 } else if (keys.enckeylen == AES_KEYSIZE_256) {
3685 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
3686 } else {
3687 pr_err("chcr : Unsupported cipher key %d\n", keys.enckeylen);
3688 goto out;
3689 }
3690 memcpy(aeadctx->key, keys.enckey, keys.enckeylen);
3691 aeadctx->enckey_len = keys.enckeylen;
3692 if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_SHA ||
3693 subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL) {
3694 get_aes_decrypt_key(actx->dec_rrkey, aeadctx->key,
3695 aeadctx->enckey_len << 3);
3696 }
3697 key_ctx_len = sizeof(struct _key_ctx) + roundup(keys.enckeylen, 16);
3698
3699 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY, 0,
3700 0, key_ctx_len >> 4);
3701 actx->auth_mode = CHCR_SCMD_AUTH_MODE_NOP;
3702 memzero_explicit(&keys, sizeof(keys));
3703 return 0;
3704 out:
3705 aeadctx->enckey_len = 0;
3706 memzero_explicit(&keys, sizeof(keys));
3707 return -EINVAL;
3708 }
3709
3710 static int chcr_aead_op(struct aead_request *req,
3711 int size,
3712 create_wr_t create_wr_fn)
3713 {
3714 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
3715 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
3716 struct chcr_context *ctx = a_ctx(tfm);
3717 struct uld_ctx *u_ctx = ULD_CTX(ctx);
3718 struct sk_buff *skb;
3719 struct chcr_dev *cdev;
3720
3721 cdev = a_ctx(tfm)->dev;
3722 if (!cdev) {
3723 pr_err("chcr : %s : No crypto device.\n", __func__);
3724 return -ENXIO;
3725 }
3726
3727 if (chcr_inc_wrcount(cdev)) {
3728 /* Detach state for CHCR means lldi or padap is freed.
3729 * We cannot increment fallback here.
3730 */
3731 return chcr_aead_fallback(req, reqctx->op);
3732 }
3733
3734 if (cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
3735 reqctx->txqidx) &&
3736 (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))) {
3737 chcr_dec_wrcount(cdev);
3738 return -ENOSPC;
3739 }
3740
3741 if (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106 &&
3742 crypto_ipsec_check_assoclen(req->assoclen) != 0) {
3743 pr_err("RFC4106: Invalid value of assoclen %d\n",
3744 req->assoclen);
3745 return -EINVAL;
3746 }
3747
3748 /* Form a WR from req */
3749 skb = create_wr_fn(req, u_ctx->lldi.rxq_ids[reqctx->rxqidx], size);
3750
3751 if (IS_ERR_OR_NULL(skb)) {
3752 chcr_dec_wrcount(cdev);
3753 return PTR_ERR_OR_ZERO(skb);
3754 }
3755
3756 skb->dev = u_ctx->lldi.ports[0];
3757 set_wr_txq(skb, CPL_PRIORITY_DATA, reqctx->txqidx);
3758 chcr_send_wr(skb);
3759 return -EINPROGRESS;
3760 }
3761
3762 static int chcr_aead_encrypt(struct aead_request *req)
3763 {
3764 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
3765 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
3766 struct chcr_context *ctx = a_ctx(tfm);
3767 unsigned int cpu;
3768
3769 cpu = get_cpu();
3770 reqctx->txqidx = cpu % ctx->ntxq;
3771 reqctx->rxqidx = cpu % ctx->nrxq;
3772 put_cpu();
3773
3774 reqctx->verify = VERIFY_HW;
3775 reqctx->op = CHCR_ENCRYPT_OP;
3776
3777 switch (get_aead_subtype(tfm)) {
3778 case CRYPTO_ALG_SUB_TYPE_CTR_SHA:
3779 case CRYPTO_ALG_SUB_TYPE_CBC_SHA:
3780 case CRYPTO_ALG_SUB_TYPE_CBC_NULL:
3781 case CRYPTO_ALG_SUB_TYPE_CTR_NULL:
3782 return chcr_aead_op(req, 0, create_authenc_wr);
3783 case CRYPTO_ALG_SUB_TYPE_AEAD_CCM:
3784 case CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309:
3785 return chcr_aead_op(req, 0, create_aead_ccm_wr);
3786 default:
3787 return chcr_aead_op(req, 0, create_gcm_wr);
3788 }
3789 }
3790
3791 static int chcr_aead_decrypt(struct aead_request *req)
3792 {
3793 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
3794 struct chcr_context *ctx = a_ctx(tfm);
3795 struct chcr_aead_ctx *aeadctx = AEAD_CTX(ctx);
3796 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
3797 int size;
3798 unsigned int cpu;
3799
3800 cpu = get_cpu();
3801 reqctx->txqidx = cpu % ctx->ntxq;
3802 reqctx->rxqidx = cpu % ctx->nrxq;
3803 put_cpu();
3804
3805 if (aeadctx->mayverify == VERIFY_SW) {
3806 size = crypto_aead_maxauthsize(tfm);
3807 reqctx->verify = VERIFY_SW;
3808 } else {
3809 size = 0;
3810 reqctx->verify = VERIFY_HW;
3811 }
3812 reqctx->op = CHCR_DECRYPT_OP;
3813 switch (get_aead_subtype(tfm)) {
3814 case CRYPTO_ALG_SUB_TYPE_CBC_SHA:
3815 case CRYPTO_ALG_SUB_TYPE_CTR_SHA:
3816 case CRYPTO_ALG_SUB_TYPE_CBC_NULL:
3817 case CRYPTO_ALG_SUB_TYPE_CTR_NULL:
3818 return chcr_aead_op(req, size, create_authenc_wr);
3819 case CRYPTO_ALG_SUB_TYPE_AEAD_CCM:
3820 case CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309:
3821 return chcr_aead_op(req, size, create_aead_ccm_wr);
3822 default:
3823 return chcr_aead_op(req, size, create_gcm_wr);
3824 }
3825 }
3826
3827 static struct chcr_alg_template driver_algs[] = {
3828 /* AES-CBC */
3829 {
3830 .type = CRYPTO_ALG_TYPE_SKCIPHER | CRYPTO_ALG_SUB_TYPE_CBC,
3831 .is_registered = 0,
3832 .alg.skcipher = {
3833 .base.cra_name = "cbc(aes)",
3834 .base.cra_driver_name = "cbc-aes-chcr",
3835 .base.cra_blocksize = AES_BLOCK_SIZE,
3836
3837 .init = chcr_init_tfm,
3838 .exit = chcr_exit_tfm,
3839 .min_keysize = AES_MIN_KEY_SIZE,
3840 .max_keysize = AES_MAX_KEY_SIZE,
3841 .ivsize = AES_BLOCK_SIZE,
3842 .setkey = chcr_aes_cbc_setkey,
3843 .encrypt = chcr_aes_encrypt,
3844 .decrypt = chcr_aes_decrypt,
3845 }
3846 },
3847 {
3848 .type = CRYPTO_ALG_TYPE_SKCIPHER | CRYPTO_ALG_SUB_TYPE_XTS,
3849 .is_registered = 0,
3850 .alg.skcipher = {
3851 .base.cra_name = "xts(aes)",
3852 .base.cra_driver_name = "xts-aes-chcr",
3853 .base.cra_blocksize = AES_BLOCK_SIZE,
3854
3855 .init = chcr_init_tfm,
3856 .exit = chcr_exit_tfm,
3857 .min_keysize = 2 * AES_MIN_KEY_SIZE,
3858 .max_keysize = 2 * AES_MAX_KEY_SIZE,
3859 .ivsize = AES_BLOCK_SIZE,
3860 .setkey = chcr_aes_xts_setkey,
3861 .encrypt = chcr_aes_encrypt,
3862 .decrypt = chcr_aes_decrypt,
3863 }
3864 },
3865 {
3866 .type = CRYPTO_ALG_TYPE_SKCIPHER | CRYPTO_ALG_SUB_TYPE_CTR,
3867 .is_registered = 0,
3868 .alg.skcipher = {
3869 .base.cra_name = "ctr(aes)",
3870 .base.cra_driver_name = "ctr-aes-chcr",
3871 .base.cra_blocksize = 1,
3872
3873 .init = chcr_init_tfm,
3874 .exit = chcr_exit_tfm,
3875 .min_keysize = AES_MIN_KEY_SIZE,
3876 .max_keysize = AES_MAX_KEY_SIZE,
3877 .ivsize = AES_BLOCK_SIZE,
3878 .setkey = chcr_aes_ctr_setkey,
3879 .encrypt = chcr_aes_encrypt,
3880 .decrypt = chcr_aes_decrypt,
3881 }
3882 },
3883 {
3884 .type = CRYPTO_ALG_TYPE_SKCIPHER |
3885 CRYPTO_ALG_SUB_TYPE_CTR_RFC3686,
3886 .is_registered = 0,
3887 .alg.skcipher = {
3888 .base.cra_name = "rfc3686(ctr(aes))",
3889 .base.cra_driver_name = "rfc3686-ctr-aes-chcr",
3890 .base.cra_blocksize = 1,
3891
3892 .init = chcr_rfc3686_init,
3893 .exit = chcr_exit_tfm,
3894 .min_keysize = AES_MIN_KEY_SIZE + CTR_RFC3686_NONCE_SIZE,
3895 .max_keysize = AES_MAX_KEY_SIZE + CTR_RFC3686_NONCE_SIZE,
3896 .ivsize = CTR_RFC3686_IV_SIZE,
3897 .setkey = chcr_aes_rfc3686_setkey,
3898 .encrypt = chcr_aes_encrypt,
3899 .decrypt = chcr_aes_decrypt,
3900 }
3901 },
3902 /* SHA */
3903 {
3904 .type = CRYPTO_ALG_TYPE_AHASH,
3905 .is_registered = 0,
3906 .alg.hash = {
3907 .halg.digestsize = SHA1_DIGEST_SIZE,
3908 .halg.base = {
3909 .cra_name = "sha1",
3910 .cra_driver_name = "sha1-chcr",
3911 .cra_blocksize = SHA1_BLOCK_SIZE,
3912 }
3913 }
3914 },
3915 {
3916 .type = CRYPTO_ALG_TYPE_AHASH,
3917 .is_registered = 0,
3918 .alg.hash = {
3919 .halg.digestsize = SHA256_DIGEST_SIZE,
3920 .halg.base = {
3921 .cra_name = "sha256",
3922 .cra_driver_name = "sha256-chcr",
3923 .cra_blocksize = SHA256_BLOCK_SIZE,
3924 }
3925 }
3926 },
3927 {
3928 .type = CRYPTO_ALG_TYPE_AHASH,
3929 .is_registered = 0,
3930 .alg.hash = {
3931 .halg.digestsize = SHA224_DIGEST_SIZE,
3932 .halg.base = {
3933 .cra_name = "sha224",
3934 .cra_driver_name = "sha224-chcr",
3935 .cra_blocksize = SHA224_BLOCK_SIZE,
3936 }
3937 }
3938 },
3939 {
3940 .type = CRYPTO_ALG_TYPE_AHASH,
3941 .is_registered = 0,
3942 .alg.hash = {
3943 .halg.digestsize = SHA384_DIGEST_SIZE,
3944 .halg.base = {
3945 .cra_name = "sha384",
3946 .cra_driver_name = "sha384-chcr",
3947 .cra_blocksize = SHA384_BLOCK_SIZE,
3948 }
3949 }
3950 },
3951 {
3952 .type = CRYPTO_ALG_TYPE_AHASH,
3953 .is_registered = 0,
3954 .alg.hash = {
3955 .halg.digestsize = SHA512_DIGEST_SIZE,
3956 .halg.base = {
3957 .cra_name = "sha512",
3958 .cra_driver_name = "sha512-chcr",
3959 .cra_blocksize = SHA512_BLOCK_SIZE,
3960 }
3961 }
3962 },
3963 /* HMAC */
3964 {
3965 .type = CRYPTO_ALG_TYPE_HMAC,
3966 .is_registered = 0,
3967 .alg.hash = {
3968 .halg.digestsize = SHA1_DIGEST_SIZE,
3969 .halg.base = {
3970 .cra_name = "hmac(sha1)",
3971 .cra_driver_name = "hmac-sha1-chcr",
3972 .cra_blocksize = SHA1_BLOCK_SIZE,
3973 }
3974 }
3975 },
3976 {
3977 .type = CRYPTO_ALG_TYPE_HMAC,
3978 .is_registered = 0,
3979 .alg.hash = {
3980 .halg.digestsize = SHA224_DIGEST_SIZE,
3981 .halg.base = {
3982 .cra_name = "hmac(sha224)",
3983 .cra_driver_name = "hmac-sha224-chcr",
3984 .cra_blocksize = SHA224_BLOCK_SIZE,
3985 }
3986 }
3987 },
3988 {
3989 .type = CRYPTO_ALG_TYPE_HMAC,
3990 .is_registered = 0,
3991 .alg.hash = {
3992 .halg.digestsize = SHA256_DIGEST_SIZE,
3993 .halg.base = {
3994 .cra_name = "hmac(sha256)",
3995 .cra_driver_name = "hmac-sha256-chcr",
3996 .cra_blocksize = SHA256_BLOCK_SIZE,
3997 }
3998 }
3999 },
4000 {
4001 .type = CRYPTO_ALG_TYPE_HMAC,
4002 .is_registered = 0,
4003 .alg.hash = {
4004 .halg.digestsize = SHA384_DIGEST_SIZE,
4005 .halg.base = {
4006 .cra_name = "hmac(sha384)",
4007 .cra_driver_name = "hmac-sha384-chcr",
4008 .cra_blocksize = SHA384_BLOCK_SIZE,
4009 }
4010 }
4011 },
4012 {
4013 .type = CRYPTO_ALG_TYPE_HMAC,
4014 .is_registered = 0,
4015 .alg.hash = {
4016 .halg.digestsize = SHA512_DIGEST_SIZE,
4017 .halg.base = {
4018 .cra_name = "hmac(sha512)",
4019 .cra_driver_name = "hmac-sha512-chcr",
4020 .cra_blocksize = SHA512_BLOCK_SIZE,
4021 }
4022 }
4023 },
4024 /* Add AEAD Algorithms */
4025 {
4026 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_GCM,
4027 .is_registered = 0,
4028 .alg.aead = {
4029 .base = {
4030 .cra_name = "gcm(aes)",
4031 .cra_driver_name = "gcm-aes-chcr",
4032 .cra_blocksize = 1,
4033 .cra_priority = CHCR_AEAD_PRIORITY,
4034 .cra_ctxsize = sizeof(struct chcr_context) +
4035 sizeof(struct chcr_aead_ctx) +
4036 sizeof(struct chcr_gcm_ctx),
4037 },
4038 .ivsize = GCM_AES_IV_SIZE,
4039 .maxauthsize = GHASH_DIGEST_SIZE,
4040 .setkey = chcr_gcm_setkey,
4041 .setauthsize = chcr_gcm_setauthsize,
4042 }
4043 },
4044 {
4045 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106,
4046 .is_registered = 0,
4047 .alg.aead = {
4048 .base = {
4049 .cra_name = "rfc4106(gcm(aes))",
4050 .cra_driver_name = "rfc4106-gcm-aes-chcr",
4051 .cra_blocksize = 1,
4052 .cra_priority = CHCR_AEAD_PRIORITY + 1,
4053 .cra_ctxsize = sizeof(struct chcr_context) +
4054 sizeof(struct chcr_aead_ctx) +
4055 sizeof(struct chcr_gcm_ctx),
4056
4057 },
4058 .ivsize = GCM_RFC4106_IV_SIZE,
4059 .maxauthsize = GHASH_DIGEST_SIZE,
4060 .setkey = chcr_gcm_setkey,
4061 .setauthsize = chcr_4106_4309_setauthsize,
4062 }
4063 },
4064 {
4065 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_CCM,
4066 .is_registered = 0,
4067 .alg.aead = {
4068 .base = {
4069 .cra_name = "ccm(aes)",
4070 .cra_driver_name = "ccm-aes-chcr",
4071 .cra_blocksize = 1,
4072 .cra_priority = CHCR_AEAD_PRIORITY,
4073 .cra_ctxsize = sizeof(struct chcr_context) +
4074 sizeof(struct chcr_aead_ctx),
4075
4076 },
4077 .ivsize = AES_BLOCK_SIZE,
4078 .maxauthsize = GHASH_DIGEST_SIZE,
4079 .setkey = chcr_aead_ccm_setkey,
4080 .setauthsize = chcr_ccm_setauthsize,
4081 }
4082 },
4083 {
4084 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309,
4085 .is_registered = 0,
4086 .alg.aead = {
4087 .base = {
4088 .cra_name = "rfc4309(ccm(aes))",
4089 .cra_driver_name = "rfc4309-ccm-aes-chcr",
4090 .cra_blocksize = 1,
4091 .cra_priority = CHCR_AEAD_PRIORITY + 1,
4092 .cra_ctxsize = sizeof(struct chcr_context) +
4093 sizeof(struct chcr_aead_ctx),
4094
4095 },
4096 .ivsize = 8,
4097 .maxauthsize = GHASH_DIGEST_SIZE,
4098 .setkey = chcr_aead_rfc4309_setkey,
4099 .setauthsize = chcr_4106_4309_setauthsize,
4100 }
4101 },
4102 {
4103 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
4104 .is_registered = 0,
4105 .alg.aead = {
4106 .base = {
4107 .cra_name = "authenc(hmac(sha1),cbc(aes))",
4108 .cra_driver_name =
4109 "authenc-hmac-sha1-cbc-aes-chcr",
4110 .cra_blocksize = AES_BLOCK_SIZE,
4111 .cra_priority = CHCR_AEAD_PRIORITY,
4112 .cra_ctxsize = sizeof(struct chcr_context) +
4113 sizeof(struct chcr_aead_ctx) +
4114 sizeof(struct chcr_authenc_ctx),
4115
4116 },
4117 .ivsize = AES_BLOCK_SIZE,
4118 .maxauthsize = SHA1_DIGEST_SIZE,
4119 .setkey = chcr_authenc_setkey,
4120 .setauthsize = chcr_authenc_setauthsize,
4121 }
4122 },
4123 {
4124 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
4125 .is_registered = 0,
4126 .alg.aead = {
4127 .base = {
4128
4129 .cra_name = "authenc(hmac(sha256),cbc(aes))",
4130 .cra_driver_name =
4131 "authenc-hmac-sha256-cbc-aes-chcr",
4132 .cra_blocksize = AES_BLOCK_SIZE,
4133 .cra_priority = CHCR_AEAD_PRIORITY,
4134 .cra_ctxsize = sizeof(struct chcr_context) +
4135 sizeof(struct chcr_aead_ctx) +
4136 sizeof(struct chcr_authenc_ctx),
4137
4138 },
4139 .ivsize = AES_BLOCK_SIZE,
4140 .maxauthsize = SHA256_DIGEST_SIZE,
4141 .setkey = chcr_authenc_setkey,
4142 .setauthsize = chcr_authenc_setauthsize,
4143 }
4144 },
4145 {
4146 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
4147 .is_registered = 0,
4148 .alg.aead = {
4149 .base = {
4150 .cra_name = "authenc(hmac(sha224),cbc(aes))",
4151 .cra_driver_name =
4152 "authenc-hmac-sha224-cbc-aes-chcr",
4153 .cra_blocksize = AES_BLOCK_SIZE,
4154 .cra_priority = CHCR_AEAD_PRIORITY,
4155 .cra_ctxsize = sizeof(struct chcr_context) +
4156 sizeof(struct chcr_aead_ctx) +
4157 sizeof(struct chcr_authenc_ctx),
4158 },
4159 .ivsize = AES_BLOCK_SIZE,
4160 .maxauthsize = SHA224_DIGEST_SIZE,
4161 .setkey = chcr_authenc_setkey,
4162 .setauthsize = chcr_authenc_setauthsize,
4163 }
4164 },
4165 {
4166 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
4167 .is_registered = 0,
4168 .alg.aead = {
4169 .base = {
4170 .cra_name = "authenc(hmac(sha384),cbc(aes))",
4171 .cra_driver_name =
4172 "authenc-hmac-sha384-cbc-aes-chcr",
4173 .cra_blocksize = AES_BLOCK_SIZE,
4174 .cra_priority = CHCR_AEAD_PRIORITY,
4175 .cra_ctxsize = sizeof(struct chcr_context) +
4176 sizeof(struct chcr_aead_ctx) +
4177 sizeof(struct chcr_authenc_ctx),
4178
4179 },
4180 .ivsize = AES_BLOCK_SIZE,
4181 .maxauthsize = SHA384_DIGEST_SIZE,
4182 .setkey = chcr_authenc_setkey,
4183 .setauthsize = chcr_authenc_setauthsize,
4184 }
4185 },
4186 {
4187 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
4188 .is_registered = 0,
4189 .alg.aead = {
4190 .base = {
4191 .cra_name = "authenc(hmac(sha512),cbc(aes))",
4192 .cra_driver_name =
4193 "authenc-hmac-sha512-cbc-aes-chcr",
4194 .cra_blocksize = AES_BLOCK_SIZE,
4195 .cra_priority = CHCR_AEAD_PRIORITY,
4196 .cra_ctxsize = sizeof(struct chcr_context) +
4197 sizeof(struct chcr_aead_ctx) +
4198 sizeof(struct chcr_authenc_ctx),
4199
4200 },
4201 .ivsize = AES_BLOCK_SIZE,
4202 .maxauthsize = SHA512_DIGEST_SIZE,
4203 .setkey = chcr_authenc_setkey,
4204 .setauthsize = chcr_authenc_setauthsize,
4205 }
4206 },
4207 {
4208 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_NULL,
4209 .is_registered = 0,
4210 .alg.aead = {
4211 .base = {
4212 .cra_name = "authenc(digest_null,cbc(aes))",
4213 .cra_driver_name =
4214 "authenc-digest_null-cbc-aes-chcr",
4215 .cra_blocksize = AES_BLOCK_SIZE,
4216 .cra_priority = CHCR_AEAD_PRIORITY,
4217 .cra_ctxsize = sizeof(struct chcr_context) +
4218 sizeof(struct chcr_aead_ctx) +
4219 sizeof(struct chcr_authenc_ctx),
4220
4221 },
4222 .ivsize = AES_BLOCK_SIZE,
4223 .maxauthsize = 0,
4224 .setkey = chcr_aead_digest_null_setkey,
4225 .setauthsize = chcr_authenc_null_setauthsize,
4226 }
4227 },
4228 {
4229 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4230 .is_registered = 0,
4231 .alg.aead = {
4232 .base = {
4233 .cra_name = "authenc(hmac(sha1),rfc3686(ctr(aes)))",
4234 .cra_driver_name =
4235 "authenc-hmac-sha1-rfc3686-ctr-aes-chcr",
4236 .cra_blocksize = 1,
4237 .cra_priority = CHCR_AEAD_PRIORITY,
4238 .cra_ctxsize = sizeof(struct chcr_context) +
4239 sizeof(struct chcr_aead_ctx) +
4240 sizeof(struct chcr_authenc_ctx),
4241
4242 },
4243 .ivsize = CTR_RFC3686_IV_SIZE,
4244 .maxauthsize = SHA1_DIGEST_SIZE,
4245 .setkey = chcr_authenc_setkey,
4246 .setauthsize = chcr_authenc_setauthsize,
4247 }
4248 },
4249 {
4250 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4251 .is_registered = 0,
4252 .alg.aead = {
4253 .base = {
4254
4255 .cra_name = "authenc(hmac(sha256),rfc3686(ctr(aes)))",
4256 .cra_driver_name =
4257 "authenc-hmac-sha256-rfc3686-ctr-aes-chcr",
4258 .cra_blocksize = 1,
4259 .cra_priority = CHCR_AEAD_PRIORITY,
4260 .cra_ctxsize = sizeof(struct chcr_context) +
4261 sizeof(struct chcr_aead_ctx) +
4262 sizeof(struct chcr_authenc_ctx),
4263
4264 },
4265 .ivsize = CTR_RFC3686_IV_SIZE,
4266 .maxauthsize = SHA256_DIGEST_SIZE,
4267 .setkey = chcr_authenc_setkey,
4268 .setauthsize = chcr_authenc_setauthsize,
4269 }
4270 },
4271 {
4272 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4273 .is_registered = 0,
4274 .alg.aead = {
4275 .base = {
4276 .cra_name = "authenc(hmac(sha224),rfc3686(ctr(aes)))",
4277 .cra_driver_name =
4278 "authenc-hmac-sha224-rfc3686-ctr-aes-chcr",
4279 .cra_blocksize = 1,
4280 .cra_priority = CHCR_AEAD_PRIORITY,
4281 .cra_ctxsize = sizeof(struct chcr_context) +
4282 sizeof(struct chcr_aead_ctx) +
4283 sizeof(struct chcr_authenc_ctx),
4284 },
4285 .ivsize = CTR_RFC3686_IV_SIZE,
4286 .maxauthsize = SHA224_DIGEST_SIZE,
4287 .setkey = chcr_authenc_setkey,
4288 .setauthsize = chcr_authenc_setauthsize,
4289 }
4290 },
4291 {
4292 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4293 .is_registered = 0,
4294 .alg.aead = {
4295 .base = {
4296 .cra_name = "authenc(hmac(sha384),rfc3686(ctr(aes)))",
4297 .cra_driver_name =
4298 "authenc-hmac-sha384-rfc3686-ctr-aes-chcr",
4299 .cra_blocksize = 1,
4300 .cra_priority = CHCR_AEAD_PRIORITY,
4301 .cra_ctxsize = sizeof(struct chcr_context) +
4302 sizeof(struct chcr_aead_ctx) +
4303 sizeof(struct chcr_authenc_ctx),
4304
4305 },
4306 .ivsize = CTR_RFC3686_IV_SIZE,
4307 .maxauthsize = SHA384_DIGEST_SIZE,
4308 .setkey = chcr_authenc_setkey,
4309 .setauthsize = chcr_authenc_setauthsize,
4310 }
4311 },
4312 {
4313 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4314 .is_registered = 0,
4315 .alg.aead = {
4316 .base = {
4317 .cra_name = "authenc(hmac(sha512),rfc3686(ctr(aes)))",
4318 .cra_driver_name =
4319 "authenc-hmac-sha512-rfc3686-ctr-aes-chcr",
4320 .cra_blocksize = 1,
4321 .cra_priority = CHCR_AEAD_PRIORITY,
4322 .cra_ctxsize = sizeof(struct chcr_context) +
4323 sizeof(struct chcr_aead_ctx) +
4324 sizeof(struct chcr_authenc_ctx),
4325
4326 },
4327 .ivsize = CTR_RFC3686_IV_SIZE,
4328 .maxauthsize = SHA512_DIGEST_SIZE,
4329 .setkey = chcr_authenc_setkey,
4330 .setauthsize = chcr_authenc_setauthsize,
4331 }
4332 },
4333 {
4334 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_NULL,
4335 .is_registered = 0,
4336 .alg.aead = {
4337 .base = {
4338 .cra_name = "authenc(digest_null,rfc3686(ctr(aes)))",
4339 .cra_driver_name =
4340 "authenc-digest_null-rfc3686-ctr-aes-chcr",
4341 .cra_blocksize = 1,
4342 .cra_priority = CHCR_AEAD_PRIORITY,
4343 .cra_ctxsize = sizeof(struct chcr_context) +
4344 sizeof(struct chcr_aead_ctx) +
4345 sizeof(struct chcr_authenc_ctx),
4346
4347 },
4348 .ivsize = CTR_RFC3686_IV_SIZE,
4349 .maxauthsize = 0,
4350 .setkey = chcr_aead_digest_null_setkey,
4351 .setauthsize = chcr_authenc_null_setauthsize,
4352 }
4353 },
4354 };
4355
4356 /*
4357 * chcr_unregister_alg - Deregister crypto algorithms with
4358 * kernel framework.
4359 */
4360 static int chcr_unregister_alg(void)
4361 {
4362 int i;
4363
4364 for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
4365 switch (driver_algs[i].type & CRYPTO_ALG_TYPE_MASK) {
4366 case CRYPTO_ALG_TYPE_SKCIPHER:
4367 if (driver_algs[i].is_registered)
4368 crypto_unregister_skcipher(
4369 &driver_algs[i].alg.skcipher);
4370 break;
4371 case CRYPTO_ALG_TYPE_AEAD:
4372 if (driver_algs[i].is_registered)
4373 crypto_unregister_aead(
4374 &driver_algs[i].alg.aead);
4375 break;
4376 case CRYPTO_ALG_TYPE_AHASH:
4377 if (driver_algs[i].is_registered)
4378 crypto_unregister_ahash(
4379 &driver_algs[i].alg.hash);
4380 break;
4381 }
4382 driver_algs[i].is_registered = 0;
4383 }
4384 return 0;
4385 }
4386
4387 #define SZ_AHASH_CTX sizeof(struct chcr_context)
4388 #define SZ_AHASH_H_CTX (sizeof(struct chcr_context) + sizeof(struct hmac_ctx))
4389 #define SZ_AHASH_REQ_CTX sizeof(struct chcr_ahash_req_ctx)
4390
4391 /*
4392 * chcr_register_alg - Register crypto algorithms with kernel framework.
4393 */
4394 static int chcr_register_alg(void)
4395 {
4396 struct crypto_alg ai;
4397 struct ahash_alg *a_hash;
4398 int err = 0, i;
4399 char *name = NULL;
4400
4401 for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
4402 if (driver_algs[i].is_registered)
4403 continue;
4404 switch (driver_algs[i].type & CRYPTO_ALG_TYPE_MASK) {
4405 case CRYPTO_ALG_TYPE_SKCIPHER:
4406 driver_algs[i].alg.skcipher.base.cra_priority =
4407 CHCR_CRA_PRIORITY;
4408 driver_algs[i].alg.skcipher.base.cra_module = THIS_MODULE;
4409 driver_algs[i].alg.skcipher.base.cra_flags =
4410 CRYPTO_ALG_TYPE_SKCIPHER | CRYPTO_ALG_ASYNC |
4411 CRYPTO_ALG_NEED_FALLBACK;
4412 driver_algs[i].alg.skcipher.base.cra_ctxsize =
4413 sizeof(struct chcr_context) +
4414 sizeof(struct ablk_ctx);
4415 driver_algs[i].alg.skcipher.base.cra_alignmask = 0;
4416
4417 err = crypto_register_skcipher(&driver_algs[i].alg.skcipher);
4418 name = driver_algs[i].alg.skcipher.base.cra_driver_name;
4419 break;
4420 case CRYPTO_ALG_TYPE_AEAD:
4421 driver_algs[i].alg.aead.base.cra_flags =
4422 CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK;
4423 driver_algs[i].alg.aead.encrypt = chcr_aead_encrypt;
4424 driver_algs[i].alg.aead.decrypt = chcr_aead_decrypt;
4425 driver_algs[i].alg.aead.init = chcr_aead_cra_init;
4426 driver_algs[i].alg.aead.exit = chcr_aead_cra_exit;
4427 driver_algs[i].alg.aead.base.cra_module = THIS_MODULE;
4428 err = crypto_register_aead(&driver_algs[i].alg.aead);
4429 name = driver_algs[i].alg.aead.base.cra_driver_name;
4430 break;
4431 case CRYPTO_ALG_TYPE_AHASH:
4432 a_hash = &driver_algs[i].alg.hash;
4433 a_hash->update = chcr_ahash_update;
4434 a_hash->final = chcr_ahash_final;
4435 a_hash->finup = chcr_ahash_finup;
4436 a_hash->digest = chcr_ahash_digest;
4437 a_hash->export = chcr_ahash_export;
4438 a_hash->import = chcr_ahash_import;
4439 a_hash->halg.statesize = SZ_AHASH_REQ_CTX;
4440 a_hash->halg.base.cra_priority = CHCR_CRA_PRIORITY;
4441 a_hash->halg.base.cra_module = THIS_MODULE;
4442 a_hash->halg.base.cra_flags = CRYPTO_ALG_ASYNC;
4443 a_hash->halg.base.cra_alignmask = 0;
4444 a_hash->halg.base.cra_exit = NULL;
4445
4446 if (driver_algs[i].type == CRYPTO_ALG_TYPE_HMAC) {
4447 a_hash->halg.base.cra_init = chcr_hmac_cra_init;
4448 a_hash->halg.base.cra_exit = chcr_hmac_cra_exit;
4449 a_hash->init = chcr_hmac_init;
4450 a_hash->setkey = chcr_ahash_setkey;
4451 a_hash->halg.base.cra_ctxsize = SZ_AHASH_H_CTX;
4452 } else {
4453 a_hash->init = chcr_sha_init;
4454 a_hash->halg.base.cra_ctxsize = SZ_AHASH_CTX;
4455 a_hash->halg.base.cra_init = chcr_sha_cra_init;
4456 }
4457 err = crypto_register_ahash(&driver_algs[i].alg.hash);
4458 ai = driver_algs[i].alg.hash.halg.base;
4459 name = ai.cra_driver_name;
4460 break;
4461 }
4462 if (err) {
4463 pr_err("chcr : %s : Algorithm registration failed\n",
4464 name);
4465 goto register_err;
4466 } else {
4467 driver_algs[i].is_registered = 1;
4468 }
4469 }
4470 return 0;
4471
4472 register_err:
4473 chcr_unregister_alg();
4474 return err;
4475 }
4476
4477 /*
4478 * start_crypto - Register the crypto algorithms.
4479 * This should called once when the first device comesup. After this
4480 * kernel will start calling driver APIs for crypto operations.
4481 */
4482 int start_crypto(void)
4483 {
4484 return chcr_register_alg();
4485 }
4486
4487 /*
4488 * stop_crypto - Deregister all the crypto algorithms with kernel.
4489 * This should be called once when the last device goes down. After this
4490 * kernel will not call the driver API for crypto operations.
4491 */
4492 int stop_crypto(void)
4493 {
4494 chcr_unregister_alg();
4495 return 0;
4496 }
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