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Merge tag 'powerpc-5.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
[mirror_ubuntu-hirsute-kernel.git] / drivers / crypto / chelsio / chcr_algo.c
1 /*
2 * This file is part of the Chelsio T6 Crypto driver for Linux.
3 *
4 * Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved.
5 *
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer.
19 *
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * SOFTWARE.
33 *
34 * Written and Maintained by:
35 * Manoj Malviya (manojmalviya@chelsio.com)
36 * Atul Gupta (atul.gupta@chelsio.com)
37 * Jitendra Lulla (jlulla@chelsio.com)
38 * Yeshaswi M R Gowda (yeshaswi@chelsio.com)
39 * Harsh Jain (harsh@chelsio.com)
40 */
41
42 #define pr_fmt(fmt) "chcr:" fmt
43
44 #include <linux/kernel.h>
45 #include <linux/module.h>
46 #include <linux/crypto.h>
47 #include <linux/cryptohash.h>
48 #include <linux/skbuff.h>
49 #include <linux/rtnetlink.h>
50 #include <linux/highmem.h>
51 #include <linux/scatterlist.h>
52
53 #include <crypto/aes.h>
54 #include <crypto/algapi.h>
55 #include <crypto/hash.h>
56 #include <crypto/gcm.h>
57 #include <crypto/sha.h>
58 #include <crypto/authenc.h>
59 #include <crypto/ctr.h>
60 #include <crypto/gf128mul.h>
61 #include <crypto/internal/aead.h>
62 #include <crypto/null.h>
63 #include <crypto/internal/skcipher.h>
64 #include <crypto/aead.h>
65 #include <crypto/scatterwalk.h>
66 #include <crypto/internal/hash.h>
67
68 #include "t4fw_api.h"
69 #include "t4_msg.h"
70 #include "chcr_core.h"
71 #include "chcr_algo.h"
72 #include "chcr_crypto.h"
73
74 #define IV AES_BLOCK_SIZE
75
76 static unsigned int sgl_ent_len[] = {
77 0, 0, 16, 24, 40, 48, 64, 72, 88,
78 96, 112, 120, 136, 144, 160, 168, 184,
79 192, 208, 216, 232, 240, 256, 264, 280,
80 288, 304, 312, 328, 336, 352, 360, 376
81 };
82
83 static unsigned int dsgl_ent_len[] = {
84 0, 32, 32, 48, 48, 64, 64, 80, 80,
85 112, 112, 128, 128, 144, 144, 160, 160,
86 192, 192, 208, 208, 224, 224, 240, 240,
87 272, 272, 288, 288, 304, 304, 320, 320
88 };
89
90 static u32 round_constant[11] = {
91 0x01000000, 0x02000000, 0x04000000, 0x08000000,
92 0x10000000, 0x20000000, 0x40000000, 0x80000000,
93 0x1B000000, 0x36000000, 0x6C000000
94 };
95
96 static int chcr_handle_cipher_resp(struct ablkcipher_request *req,
97 unsigned char *input, int err);
98
99 static inline struct chcr_aead_ctx *AEAD_CTX(struct chcr_context *ctx)
100 {
101 return ctx->crypto_ctx->aeadctx;
102 }
103
104 static inline struct ablk_ctx *ABLK_CTX(struct chcr_context *ctx)
105 {
106 return ctx->crypto_ctx->ablkctx;
107 }
108
109 static inline struct hmac_ctx *HMAC_CTX(struct chcr_context *ctx)
110 {
111 return ctx->crypto_ctx->hmacctx;
112 }
113
114 static inline struct chcr_gcm_ctx *GCM_CTX(struct chcr_aead_ctx *gctx)
115 {
116 return gctx->ctx->gcm;
117 }
118
119 static inline struct chcr_authenc_ctx *AUTHENC_CTX(struct chcr_aead_ctx *gctx)
120 {
121 return gctx->ctx->authenc;
122 }
123
124 static inline struct uld_ctx *ULD_CTX(struct chcr_context *ctx)
125 {
126 return container_of(ctx->dev, struct uld_ctx, dev);
127 }
128
129 static inline int is_ofld_imm(const struct sk_buff *skb)
130 {
131 return (skb->len <= SGE_MAX_WR_LEN);
132 }
133
134 static inline void chcr_init_hctx_per_wr(struct chcr_ahash_req_ctx *reqctx)
135 {
136 memset(&reqctx->hctx_wr, 0, sizeof(struct chcr_hctx_per_wr));
137 }
138
139 static int sg_nents_xlen(struct scatterlist *sg, unsigned int reqlen,
140 unsigned int entlen,
141 unsigned int skip)
142 {
143 int nents = 0;
144 unsigned int less;
145 unsigned int skip_len = 0;
146
147 while (sg && skip) {
148 if (sg_dma_len(sg) <= skip) {
149 skip -= sg_dma_len(sg);
150 skip_len = 0;
151 sg = sg_next(sg);
152 } else {
153 skip_len = skip;
154 skip = 0;
155 }
156 }
157
158 while (sg && reqlen) {
159 less = min(reqlen, sg_dma_len(sg) - skip_len);
160 nents += DIV_ROUND_UP(less, entlen);
161 reqlen -= less;
162 skip_len = 0;
163 sg = sg_next(sg);
164 }
165 return nents;
166 }
167
168 static inline int get_aead_subtype(struct crypto_aead *aead)
169 {
170 struct aead_alg *alg = crypto_aead_alg(aead);
171 struct chcr_alg_template *chcr_crypto_alg =
172 container_of(alg, struct chcr_alg_template, alg.aead);
173 return chcr_crypto_alg->type & CRYPTO_ALG_SUB_TYPE_MASK;
174 }
175
176 void chcr_verify_tag(struct aead_request *req, u8 *input, int *err)
177 {
178 u8 temp[SHA512_DIGEST_SIZE];
179 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
180 int authsize = crypto_aead_authsize(tfm);
181 struct cpl_fw6_pld *fw6_pld;
182 int cmp = 0;
183
184 fw6_pld = (struct cpl_fw6_pld *)input;
185 if ((get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106) ||
186 (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_GCM)) {
187 cmp = crypto_memneq(&fw6_pld->data[2], (fw6_pld + 1), authsize);
188 } else {
189
190 sg_pcopy_to_buffer(req->src, sg_nents(req->src), temp,
191 authsize, req->assoclen +
192 req->cryptlen - authsize);
193 cmp = crypto_memneq(temp, (fw6_pld + 1), authsize);
194 }
195 if (cmp)
196 *err = -EBADMSG;
197 else
198 *err = 0;
199 }
200
201 static int chcr_inc_wrcount(struct chcr_dev *dev)
202 {
203 if (dev->state == CHCR_DETACH)
204 return 1;
205 atomic_inc(&dev->inflight);
206 return 0;
207 }
208
209 static inline void chcr_dec_wrcount(struct chcr_dev *dev)
210 {
211 atomic_dec(&dev->inflight);
212 }
213
214 static inline int chcr_handle_aead_resp(struct aead_request *req,
215 unsigned char *input,
216 int err)
217 {
218 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
219 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
220 struct chcr_dev *dev = a_ctx(tfm)->dev;
221
222 chcr_aead_common_exit(req);
223 if (reqctx->verify == VERIFY_SW) {
224 chcr_verify_tag(req, input, &err);
225 reqctx->verify = VERIFY_HW;
226 }
227 chcr_dec_wrcount(dev);
228 req->base.complete(&req->base, err);
229
230 return err;
231 }
232
233 static void get_aes_decrypt_key(unsigned char *dec_key,
234 const unsigned char *key,
235 unsigned int keylength)
236 {
237 u32 temp;
238 u32 w_ring[MAX_NK];
239 int i, j, k;
240 u8 nr, nk;
241
242 switch (keylength) {
243 case AES_KEYLENGTH_128BIT:
244 nk = KEYLENGTH_4BYTES;
245 nr = NUMBER_OF_ROUNDS_10;
246 break;
247 case AES_KEYLENGTH_192BIT:
248 nk = KEYLENGTH_6BYTES;
249 nr = NUMBER_OF_ROUNDS_12;
250 break;
251 case AES_KEYLENGTH_256BIT:
252 nk = KEYLENGTH_8BYTES;
253 nr = NUMBER_OF_ROUNDS_14;
254 break;
255 default:
256 return;
257 }
258 for (i = 0; i < nk; i++)
259 w_ring[i] = be32_to_cpu(*(u32 *)&key[4 * i]);
260
261 i = 0;
262 temp = w_ring[nk - 1];
263 while (i + nk < (nr + 1) * 4) {
264 if (!(i % nk)) {
265 /* RotWord(temp) */
266 temp = (temp << 8) | (temp >> 24);
267 temp = aes_ks_subword(temp);
268 temp ^= round_constant[i / nk];
269 } else if (nk == 8 && (i % 4 == 0)) {
270 temp = aes_ks_subword(temp);
271 }
272 w_ring[i % nk] ^= temp;
273 temp = w_ring[i % nk];
274 i++;
275 }
276 i--;
277 for (k = 0, j = i % nk; k < nk; k++) {
278 *((u32 *)dec_key + k) = htonl(w_ring[j]);
279 j--;
280 if (j < 0)
281 j += nk;
282 }
283 }
284
285 static struct crypto_shash *chcr_alloc_shash(unsigned int ds)
286 {
287 struct crypto_shash *base_hash = ERR_PTR(-EINVAL);
288
289 switch (ds) {
290 case SHA1_DIGEST_SIZE:
291 base_hash = crypto_alloc_shash("sha1", 0, 0);
292 break;
293 case SHA224_DIGEST_SIZE:
294 base_hash = crypto_alloc_shash("sha224", 0, 0);
295 break;
296 case SHA256_DIGEST_SIZE:
297 base_hash = crypto_alloc_shash("sha256", 0, 0);
298 break;
299 case SHA384_DIGEST_SIZE:
300 base_hash = crypto_alloc_shash("sha384", 0, 0);
301 break;
302 case SHA512_DIGEST_SIZE:
303 base_hash = crypto_alloc_shash("sha512", 0, 0);
304 break;
305 }
306
307 return base_hash;
308 }
309
310 static int chcr_compute_partial_hash(struct shash_desc *desc,
311 char *iopad, char *result_hash,
312 int digest_size)
313 {
314 struct sha1_state sha1_st;
315 struct sha256_state sha256_st;
316 struct sha512_state sha512_st;
317 int error;
318
319 if (digest_size == SHA1_DIGEST_SIZE) {
320 error = crypto_shash_init(desc) ?:
321 crypto_shash_update(desc, iopad, SHA1_BLOCK_SIZE) ?:
322 crypto_shash_export(desc, (void *)&sha1_st);
323 memcpy(result_hash, sha1_st.state, SHA1_DIGEST_SIZE);
324 } else if (digest_size == SHA224_DIGEST_SIZE) {
325 error = crypto_shash_init(desc) ?:
326 crypto_shash_update(desc, iopad, SHA256_BLOCK_SIZE) ?:
327 crypto_shash_export(desc, (void *)&sha256_st);
328 memcpy(result_hash, sha256_st.state, SHA256_DIGEST_SIZE);
329
330 } else if (digest_size == SHA256_DIGEST_SIZE) {
331 error = crypto_shash_init(desc) ?:
332 crypto_shash_update(desc, iopad, SHA256_BLOCK_SIZE) ?:
333 crypto_shash_export(desc, (void *)&sha256_st);
334 memcpy(result_hash, sha256_st.state, SHA256_DIGEST_SIZE);
335
336 } else if (digest_size == SHA384_DIGEST_SIZE) {
337 error = crypto_shash_init(desc) ?:
338 crypto_shash_update(desc, iopad, SHA512_BLOCK_SIZE) ?:
339 crypto_shash_export(desc, (void *)&sha512_st);
340 memcpy(result_hash, sha512_st.state, SHA512_DIGEST_SIZE);
341
342 } else if (digest_size == SHA512_DIGEST_SIZE) {
343 error = crypto_shash_init(desc) ?:
344 crypto_shash_update(desc, iopad, SHA512_BLOCK_SIZE) ?:
345 crypto_shash_export(desc, (void *)&sha512_st);
346 memcpy(result_hash, sha512_st.state, SHA512_DIGEST_SIZE);
347 } else {
348 error = -EINVAL;
349 pr_err("Unknown digest size %d\n", digest_size);
350 }
351 return error;
352 }
353
354 static void chcr_change_order(char *buf, int ds)
355 {
356 int i;
357
358 if (ds == SHA512_DIGEST_SIZE) {
359 for (i = 0; i < (ds / sizeof(u64)); i++)
360 *((__be64 *)buf + i) =
361 cpu_to_be64(*((u64 *)buf + i));
362 } else {
363 for (i = 0; i < (ds / sizeof(u32)); i++)
364 *((__be32 *)buf + i) =
365 cpu_to_be32(*((u32 *)buf + i));
366 }
367 }
368
369 static inline int is_hmac(struct crypto_tfm *tfm)
370 {
371 struct crypto_alg *alg = tfm->__crt_alg;
372 struct chcr_alg_template *chcr_crypto_alg =
373 container_of(__crypto_ahash_alg(alg), struct chcr_alg_template,
374 alg.hash);
375 if (chcr_crypto_alg->type == CRYPTO_ALG_TYPE_HMAC)
376 return 1;
377 return 0;
378 }
379
380 static inline void dsgl_walk_init(struct dsgl_walk *walk,
381 struct cpl_rx_phys_dsgl *dsgl)
382 {
383 walk->dsgl = dsgl;
384 walk->nents = 0;
385 walk->to = (struct phys_sge_pairs *)(dsgl + 1);
386 }
387
388 static inline void dsgl_walk_end(struct dsgl_walk *walk, unsigned short qid,
389 int pci_chan_id)
390 {
391 struct cpl_rx_phys_dsgl *phys_cpl;
392
393 phys_cpl = walk->dsgl;
394
395 phys_cpl->op_to_tid = htonl(CPL_RX_PHYS_DSGL_OPCODE_V(CPL_RX_PHYS_DSGL)
396 | CPL_RX_PHYS_DSGL_ISRDMA_V(0));
397 phys_cpl->pcirlxorder_to_noofsgentr =
398 htonl(CPL_RX_PHYS_DSGL_PCIRLXORDER_V(0) |
399 CPL_RX_PHYS_DSGL_PCINOSNOOP_V(0) |
400 CPL_RX_PHYS_DSGL_PCITPHNTENB_V(0) |
401 CPL_RX_PHYS_DSGL_PCITPHNT_V(0) |
402 CPL_RX_PHYS_DSGL_DCAID_V(0) |
403 CPL_RX_PHYS_DSGL_NOOFSGENTR_V(walk->nents));
404 phys_cpl->rss_hdr_int.opcode = CPL_RX_PHYS_ADDR;
405 phys_cpl->rss_hdr_int.qid = htons(qid);
406 phys_cpl->rss_hdr_int.hash_val = 0;
407 phys_cpl->rss_hdr_int.channel = pci_chan_id;
408 }
409
410 static inline void dsgl_walk_add_page(struct dsgl_walk *walk,
411 size_t size,
412 dma_addr_t addr)
413 {
414 int j;
415
416 if (!size)
417 return;
418 j = walk->nents;
419 walk->to->len[j % 8] = htons(size);
420 walk->to->addr[j % 8] = cpu_to_be64(addr);
421 j++;
422 if ((j % 8) == 0)
423 walk->to++;
424 walk->nents = j;
425 }
426
427 static void dsgl_walk_add_sg(struct dsgl_walk *walk,
428 struct scatterlist *sg,
429 unsigned int slen,
430 unsigned int skip)
431 {
432 int skip_len = 0;
433 unsigned int left_size = slen, len = 0;
434 unsigned int j = walk->nents;
435 int offset, ent_len;
436
437 if (!slen)
438 return;
439 while (sg && skip) {
440 if (sg_dma_len(sg) <= skip) {
441 skip -= sg_dma_len(sg);
442 skip_len = 0;
443 sg = sg_next(sg);
444 } else {
445 skip_len = skip;
446 skip = 0;
447 }
448 }
449
450 while (left_size && sg) {
451 len = min_t(u32, left_size, sg_dma_len(sg) - skip_len);
452 offset = 0;
453 while (len) {
454 ent_len = min_t(u32, len, CHCR_DST_SG_SIZE);
455 walk->to->len[j % 8] = htons(ent_len);
456 walk->to->addr[j % 8] = cpu_to_be64(sg_dma_address(sg) +
457 offset + skip_len);
458 offset += ent_len;
459 len -= ent_len;
460 j++;
461 if ((j % 8) == 0)
462 walk->to++;
463 }
464 walk->last_sg = sg;
465 walk->last_sg_len = min_t(u32, left_size, sg_dma_len(sg) -
466 skip_len) + skip_len;
467 left_size -= min_t(u32, left_size, sg_dma_len(sg) - skip_len);
468 skip_len = 0;
469 sg = sg_next(sg);
470 }
471 walk->nents = j;
472 }
473
474 static inline void ulptx_walk_init(struct ulptx_walk *walk,
475 struct ulptx_sgl *ulp)
476 {
477 walk->sgl = ulp;
478 walk->nents = 0;
479 walk->pair_idx = 0;
480 walk->pair = ulp->sge;
481 walk->last_sg = NULL;
482 walk->last_sg_len = 0;
483 }
484
485 static inline void ulptx_walk_end(struct ulptx_walk *walk)
486 {
487 walk->sgl->cmd_nsge = htonl(ULPTX_CMD_V(ULP_TX_SC_DSGL) |
488 ULPTX_NSGE_V(walk->nents));
489 }
490
491
492 static inline void ulptx_walk_add_page(struct ulptx_walk *walk,
493 size_t size,
494 dma_addr_t addr)
495 {
496 if (!size)
497 return;
498
499 if (walk->nents == 0) {
500 walk->sgl->len0 = cpu_to_be32(size);
501 walk->sgl->addr0 = cpu_to_be64(addr);
502 } else {
503 walk->pair->addr[walk->pair_idx] = cpu_to_be64(addr);
504 walk->pair->len[walk->pair_idx] = cpu_to_be32(size);
505 walk->pair_idx = !walk->pair_idx;
506 if (!walk->pair_idx)
507 walk->pair++;
508 }
509 walk->nents++;
510 }
511
512 static void ulptx_walk_add_sg(struct ulptx_walk *walk,
513 struct scatterlist *sg,
514 unsigned int len,
515 unsigned int skip)
516 {
517 int small;
518 int skip_len = 0;
519 unsigned int sgmin;
520
521 if (!len)
522 return;
523 while (sg && skip) {
524 if (sg_dma_len(sg) <= skip) {
525 skip -= sg_dma_len(sg);
526 skip_len = 0;
527 sg = sg_next(sg);
528 } else {
529 skip_len = skip;
530 skip = 0;
531 }
532 }
533 WARN(!sg, "SG should not be null here\n");
534 if (sg && (walk->nents == 0)) {
535 small = min_t(unsigned int, sg_dma_len(sg) - skip_len, len);
536 sgmin = min_t(unsigned int, small, CHCR_SRC_SG_SIZE);
537 walk->sgl->len0 = cpu_to_be32(sgmin);
538 walk->sgl->addr0 = cpu_to_be64(sg_dma_address(sg) + skip_len);
539 walk->nents++;
540 len -= sgmin;
541 walk->last_sg = sg;
542 walk->last_sg_len = sgmin + skip_len;
543 skip_len += sgmin;
544 if (sg_dma_len(sg) == skip_len) {
545 sg = sg_next(sg);
546 skip_len = 0;
547 }
548 }
549
550 while (sg && len) {
551 small = min(sg_dma_len(sg) - skip_len, len);
552 sgmin = min_t(unsigned int, small, CHCR_SRC_SG_SIZE);
553 walk->pair->len[walk->pair_idx] = cpu_to_be32(sgmin);
554 walk->pair->addr[walk->pair_idx] =
555 cpu_to_be64(sg_dma_address(sg) + skip_len);
556 walk->pair_idx = !walk->pair_idx;
557 walk->nents++;
558 if (!walk->pair_idx)
559 walk->pair++;
560 len -= sgmin;
561 skip_len += sgmin;
562 walk->last_sg = sg;
563 walk->last_sg_len = skip_len;
564 if (sg_dma_len(sg) == skip_len) {
565 sg = sg_next(sg);
566 skip_len = 0;
567 }
568 }
569 }
570
571 static inline int get_cryptoalg_subtype(struct crypto_tfm *tfm)
572 {
573 struct crypto_alg *alg = tfm->__crt_alg;
574 struct chcr_alg_template *chcr_crypto_alg =
575 container_of(alg, struct chcr_alg_template, alg.crypto);
576
577 return chcr_crypto_alg->type & CRYPTO_ALG_SUB_TYPE_MASK;
578 }
579
580 static int cxgb4_is_crypto_q_full(struct net_device *dev, unsigned int idx)
581 {
582 struct adapter *adap = netdev2adap(dev);
583 struct sge_uld_txq_info *txq_info =
584 adap->sge.uld_txq_info[CXGB4_TX_CRYPTO];
585 struct sge_uld_txq *txq;
586 int ret = 0;
587
588 local_bh_disable();
589 txq = &txq_info->uldtxq[idx];
590 spin_lock(&txq->sendq.lock);
591 if (txq->full)
592 ret = -1;
593 spin_unlock(&txq->sendq.lock);
594 local_bh_enable();
595 return ret;
596 }
597
598 static int generate_copy_rrkey(struct ablk_ctx *ablkctx,
599 struct _key_ctx *key_ctx)
600 {
601 if (ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC) {
602 memcpy(key_ctx->key, ablkctx->rrkey, ablkctx->enckey_len);
603 } else {
604 memcpy(key_ctx->key,
605 ablkctx->key + (ablkctx->enckey_len >> 1),
606 ablkctx->enckey_len >> 1);
607 memcpy(key_ctx->key + (ablkctx->enckey_len >> 1),
608 ablkctx->rrkey, ablkctx->enckey_len >> 1);
609 }
610 return 0;
611 }
612
613 static int chcr_hash_ent_in_wr(struct scatterlist *src,
614 unsigned int minsg,
615 unsigned int space,
616 unsigned int srcskip)
617 {
618 int srclen = 0;
619 int srcsg = minsg;
620 int soffset = 0, sless;
621
622 if (sg_dma_len(src) == srcskip) {
623 src = sg_next(src);
624 srcskip = 0;
625 }
626 while (src && space > (sgl_ent_len[srcsg + 1])) {
627 sless = min_t(unsigned int, sg_dma_len(src) - soffset - srcskip,
628 CHCR_SRC_SG_SIZE);
629 srclen += sless;
630 soffset += sless;
631 srcsg++;
632 if (sg_dma_len(src) == (soffset + srcskip)) {
633 src = sg_next(src);
634 soffset = 0;
635 srcskip = 0;
636 }
637 }
638 return srclen;
639 }
640
641 static int chcr_sg_ent_in_wr(struct scatterlist *src,
642 struct scatterlist *dst,
643 unsigned int minsg,
644 unsigned int space,
645 unsigned int srcskip,
646 unsigned int dstskip)
647 {
648 int srclen = 0, dstlen = 0;
649 int srcsg = minsg, dstsg = minsg;
650 int offset = 0, soffset = 0, less, sless = 0;
651
652 if (sg_dma_len(src) == srcskip) {
653 src = sg_next(src);
654 srcskip = 0;
655 }
656 if (sg_dma_len(dst) == dstskip) {
657 dst = sg_next(dst);
658 dstskip = 0;
659 }
660
661 while (src && dst &&
662 space > (sgl_ent_len[srcsg + 1] + dsgl_ent_len[dstsg])) {
663 sless = min_t(unsigned int, sg_dma_len(src) - srcskip - soffset,
664 CHCR_SRC_SG_SIZE);
665 srclen += sless;
666 srcsg++;
667 offset = 0;
668 while (dst && ((dstsg + 1) <= MAX_DSGL_ENT) &&
669 space > (sgl_ent_len[srcsg] + dsgl_ent_len[dstsg + 1])) {
670 if (srclen <= dstlen)
671 break;
672 less = min_t(unsigned int, sg_dma_len(dst) - offset -
673 dstskip, CHCR_DST_SG_SIZE);
674 dstlen += less;
675 offset += less;
676 if ((offset + dstskip) == sg_dma_len(dst)) {
677 dst = sg_next(dst);
678 offset = 0;
679 }
680 dstsg++;
681 dstskip = 0;
682 }
683 soffset += sless;
684 if ((soffset + srcskip) == sg_dma_len(src)) {
685 src = sg_next(src);
686 srcskip = 0;
687 soffset = 0;
688 }
689
690 }
691 return min(srclen, dstlen);
692 }
693
694 static int chcr_cipher_fallback(struct crypto_sync_skcipher *cipher,
695 u32 flags,
696 struct scatterlist *src,
697 struct scatterlist *dst,
698 unsigned int nbytes,
699 u8 *iv,
700 unsigned short op_type)
701 {
702 int err;
703
704 SYNC_SKCIPHER_REQUEST_ON_STACK(subreq, cipher);
705
706 skcipher_request_set_sync_tfm(subreq, cipher);
707 skcipher_request_set_callback(subreq, flags, NULL, NULL);
708 skcipher_request_set_crypt(subreq, src, dst,
709 nbytes, iv);
710
711 err = op_type ? crypto_skcipher_decrypt(subreq) :
712 crypto_skcipher_encrypt(subreq);
713 skcipher_request_zero(subreq);
714
715 return err;
716
717 }
718 static inline void create_wreq(struct chcr_context *ctx,
719 struct chcr_wr *chcr_req,
720 struct crypto_async_request *req,
721 unsigned int imm,
722 int hash_sz,
723 unsigned int len16,
724 unsigned int sc_len,
725 unsigned int lcb)
726 {
727 struct uld_ctx *u_ctx = ULD_CTX(ctx);
728 int qid = u_ctx->lldi.rxq_ids[ctx->rx_qidx];
729
730
731 chcr_req->wreq.op_to_cctx_size = FILL_WR_OP_CCTX_SIZE;
732 chcr_req->wreq.pld_size_hash_size =
733 htonl(FW_CRYPTO_LOOKASIDE_WR_HASH_SIZE_V(hash_sz));
734 chcr_req->wreq.len16_pkd =
735 htonl(FW_CRYPTO_LOOKASIDE_WR_LEN16_V(DIV_ROUND_UP(len16, 16)));
736 chcr_req->wreq.cookie = cpu_to_be64((uintptr_t)req);
737 chcr_req->wreq.rx_chid_to_rx_q_id =
738 FILL_WR_RX_Q_ID(ctx->tx_chan_id, qid,
739 !!lcb, ctx->tx_qidx);
740
741 chcr_req->ulptx.cmd_dest = FILL_ULPTX_CMD_DEST(ctx->tx_chan_id,
742 qid);
743 chcr_req->ulptx.len = htonl((DIV_ROUND_UP(len16, 16) -
744 ((sizeof(chcr_req->wreq)) >> 4)));
745
746 chcr_req->sc_imm.cmd_more = FILL_CMD_MORE(!imm);
747 chcr_req->sc_imm.len = cpu_to_be32(sizeof(struct cpl_tx_sec_pdu) +
748 sizeof(chcr_req->key_ctx) + sc_len);
749 }
750
751 /**
752 * create_cipher_wr - form the WR for cipher operations
753 * @req: cipher req.
754 * @ctx: crypto driver context of the request.
755 * @qid: ingress qid where response of this WR should be received.
756 * @op_type: encryption or decryption
757 */
758 static struct sk_buff *create_cipher_wr(struct cipher_wr_param *wrparam)
759 {
760 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(wrparam->req);
761 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm));
762 struct sk_buff *skb = NULL;
763 struct chcr_wr *chcr_req;
764 struct cpl_rx_phys_dsgl *phys_cpl;
765 struct ulptx_sgl *ulptx;
766 struct chcr_blkcipher_req_ctx *reqctx =
767 ablkcipher_request_ctx(wrparam->req);
768 unsigned int temp = 0, transhdr_len, dst_size;
769 int error;
770 int nents;
771 unsigned int kctx_len;
772 gfp_t flags = wrparam->req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ?
773 GFP_KERNEL : GFP_ATOMIC;
774 struct adapter *adap = padap(c_ctx(tfm)->dev);
775
776 nents = sg_nents_xlen(reqctx->dstsg, wrparam->bytes, CHCR_DST_SG_SIZE,
777 reqctx->dst_ofst);
778 dst_size = get_space_for_phys_dsgl(nents);
779 kctx_len = roundup(ablkctx->enckey_len, 16);
780 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
781 nents = sg_nents_xlen(reqctx->srcsg, wrparam->bytes,
782 CHCR_SRC_SG_SIZE, reqctx->src_ofst);
783 temp = reqctx->imm ? roundup(wrparam->bytes, 16) :
784 (sgl_len(nents) * 8);
785 transhdr_len += temp;
786 transhdr_len = roundup(transhdr_len, 16);
787 skb = alloc_skb(SGE_MAX_WR_LEN, flags);
788 if (!skb) {
789 error = -ENOMEM;
790 goto err;
791 }
792 chcr_req = __skb_put_zero(skb, transhdr_len);
793 chcr_req->sec_cpl.op_ivinsrtofst =
794 FILL_SEC_CPL_OP_IVINSR(c_ctx(tfm)->tx_chan_id, 2, 1);
795
796 chcr_req->sec_cpl.pldlen = htonl(IV + wrparam->bytes);
797 chcr_req->sec_cpl.aadstart_cipherstop_hi =
798 FILL_SEC_CPL_CIPHERSTOP_HI(0, 0, IV + 1, 0);
799
800 chcr_req->sec_cpl.cipherstop_lo_authinsert =
801 FILL_SEC_CPL_AUTHINSERT(0, 0, 0, 0);
802 chcr_req->sec_cpl.seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(reqctx->op, 0,
803 ablkctx->ciph_mode,
804 0, 0, IV >> 1);
805 chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 0,
806 0, 1, dst_size);
807
808 chcr_req->key_ctx.ctx_hdr = ablkctx->key_ctx_hdr;
809 if ((reqctx->op == CHCR_DECRYPT_OP) &&
810 (!(get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) ==
811 CRYPTO_ALG_SUB_TYPE_CTR)) &&
812 (!(get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) ==
813 CRYPTO_ALG_SUB_TYPE_CTR_RFC3686))) {
814 generate_copy_rrkey(ablkctx, &chcr_req->key_ctx);
815 } else {
816 if ((ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC) ||
817 (ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CTR)) {
818 memcpy(chcr_req->key_ctx.key, ablkctx->key,
819 ablkctx->enckey_len);
820 } else {
821 memcpy(chcr_req->key_ctx.key, ablkctx->key +
822 (ablkctx->enckey_len >> 1),
823 ablkctx->enckey_len >> 1);
824 memcpy(chcr_req->key_ctx.key +
825 (ablkctx->enckey_len >> 1),
826 ablkctx->key,
827 ablkctx->enckey_len >> 1);
828 }
829 }
830 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
831 ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size);
832 chcr_add_cipher_src_ent(wrparam->req, ulptx, wrparam);
833 chcr_add_cipher_dst_ent(wrparam->req, phys_cpl, wrparam, wrparam->qid);
834
835 atomic_inc(&adap->chcr_stats.cipher_rqst);
836 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + kctx_len + IV
837 + (reqctx->imm ? (wrparam->bytes) : 0);
838 create_wreq(c_ctx(tfm), chcr_req, &(wrparam->req->base), reqctx->imm, 0,
839 transhdr_len, temp,
840 ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC);
841 reqctx->skb = skb;
842
843 if (reqctx->op && (ablkctx->ciph_mode ==
844 CHCR_SCMD_CIPHER_MODE_AES_CBC))
845 sg_pcopy_to_buffer(wrparam->req->src,
846 sg_nents(wrparam->req->src), wrparam->req->info, 16,
847 reqctx->processed + wrparam->bytes - AES_BLOCK_SIZE);
848
849 return skb;
850 err:
851 return ERR_PTR(error);
852 }
853
854 static inline int chcr_keyctx_ck_size(unsigned int keylen)
855 {
856 int ck_size = 0;
857
858 if (keylen == AES_KEYSIZE_128)
859 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
860 else if (keylen == AES_KEYSIZE_192)
861 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
862 else if (keylen == AES_KEYSIZE_256)
863 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
864 else
865 ck_size = 0;
866
867 return ck_size;
868 }
869 static int chcr_cipher_fallback_setkey(struct crypto_ablkcipher *cipher,
870 const u8 *key,
871 unsigned int keylen)
872 {
873 struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
874 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
875 int err = 0;
876
877 crypto_sync_skcipher_clear_flags(ablkctx->sw_cipher,
878 CRYPTO_TFM_REQ_MASK);
879 crypto_sync_skcipher_set_flags(ablkctx->sw_cipher,
880 cipher->base.crt_flags & CRYPTO_TFM_REQ_MASK);
881 err = crypto_sync_skcipher_setkey(ablkctx->sw_cipher, key, keylen);
882 tfm->crt_flags &= ~CRYPTO_TFM_RES_MASK;
883 tfm->crt_flags |=
884 crypto_sync_skcipher_get_flags(ablkctx->sw_cipher) &
885 CRYPTO_TFM_RES_MASK;
886 return err;
887 }
888
889 static int chcr_aes_cbc_setkey(struct crypto_ablkcipher *cipher,
890 const u8 *key,
891 unsigned int keylen)
892 {
893 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
894 unsigned int ck_size, context_size;
895 u16 alignment = 0;
896 int err;
897
898 err = chcr_cipher_fallback_setkey(cipher, key, keylen);
899 if (err)
900 goto badkey_err;
901
902 ck_size = chcr_keyctx_ck_size(keylen);
903 alignment = ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192 ? 8 : 0;
904 memcpy(ablkctx->key, key, keylen);
905 ablkctx->enckey_len = keylen;
906 get_aes_decrypt_key(ablkctx->rrkey, ablkctx->key, keylen << 3);
907 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD +
908 keylen + alignment) >> 4;
909
910 ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY,
911 0, 0, context_size);
912 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CBC;
913 return 0;
914 badkey_err:
915 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
916 ablkctx->enckey_len = 0;
917
918 return err;
919 }
920
921 static int chcr_aes_ctr_setkey(struct crypto_ablkcipher *cipher,
922 const u8 *key,
923 unsigned int keylen)
924 {
925 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
926 unsigned int ck_size, context_size;
927 u16 alignment = 0;
928 int err;
929
930 err = chcr_cipher_fallback_setkey(cipher, key, keylen);
931 if (err)
932 goto badkey_err;
933 ck_size = chcr_keyctx_ck_size(keylen);
934 alignment = (ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192) ? 8 : 0;
935 memcpy(ablkctx->key, key, keylen);
936 ablkctx->enckey_len = keylen;
937 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD +
938 keylen + alignment) >> 4;
939
940 ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY,
941 0, 0, context_size);
942 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CTR;
943
944 return 0;
945 badkey_err:
946 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
947 ablkctx->enckey_len = 0;
948
949 return err;
950 }
951
952 static int chcr_aes_rfc3686_setkey(struct crypto_ablkcipher *cipher,
953 const u8 *key,
954 unsigned int keylen)
955 {
956 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
957 unsigned int ck_size, context_size;
958 u16 alignment = 0;
959 int err;
960
961 if (keylen < CTR_RFC3686_NONCE_SIZE)
962 return -EINVAL;
963 memcpy(ablkctx->nonce, key + (keylen - CTR_RFC3686_NONCE_SIZE),
964 CTR_RFC3686_NONCE_SIZE);
965
966 keylen -= CTR_RFC3686_NONCE_SIZE;
967 err = chcr_cipher_fallback_setkey(cipher, key, keylen);
968 if (err)
969 goto badkey_err;
970
971 ck_size = chcr_keyctx_ck_size(keylen);
972 alignment = (ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192) ? 8 : 0;
973 memcpy(ablkctx->key, key, keylen);
974 ablkctx->enckey_len = keylen;
975 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD +
976 keylen + alignment) >> 4;
977
978 ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY,
979 0, 0, context_size);
980 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CTR;
981
982 return 0;
983 badkey_err:
984 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
985 ablkctx->enckey_len = 0;
986
987 return err;
988 }
989 static void ctr_add_iv(u8 *dstiv, u8 *srciv, u32 add)
990 {
991 unsigned int size = AES_BLOCK_SIZE;
992 __be32 *b = (__be32 *)(dstiv + size);
993 u32 c, prev;
994
995 memcpy(dstiv, srciv, AES_BLOCK_SIZE);
996 for (; size >= 4; size -= 4) {
997 prev = be32_to_cpu(*--b);
998 c = prev + add;
999 *b = cpu_to_be32(c);
1000 if (prev < c)
1001 break;
1002 add = 1;
1003 }
1004
1005 }
1006
1007 static unsigned int adjust_ctr_overflow(u8 *iv, u32 bytes)
1008 {
1009 __be32 *b = (__be32 *)(iv + AES_BLOCK_SIZE);
1010 u64 c;
1011 u32 temp = be32_to_cpu(*--b);
1012
1013 temp = ~temp;
1014 c = (u64)temp + 1; // No of block can processed withou overflow
1015 if ((bytes / AES_BLOCK_SIZE) > c)
1016 bytes = c * AES_BLOCK_SIZE;
1017 return bytes;
1018 }
1019
1020 static int chcr_update_tweak(struct ablkcipher_request *req, u8 *iv,
1021 u32 isfinal)
1022 {
1023 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
1024 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm));
1025 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
1026 struct crypto_cipher *cipher;
1027 int ret, i;
1028 u8 *key;
1029 unsigned int keylen;
1030 int round = reqctx->last_req_len / AES_BLOCK_SIZE;
1031 int round8 = round / 8;
1032
1033 cipher = ablkctx->aes_generic;
1034 memcpy(iv, reqctx->iv, AES_BLOCK_SIZE);
1035
1036 keylen = ablkctx->enckey_len / 2;
1037 key = ablkctx->key + keylen;
1038 ret = crypto_cipher_setkey(cipher, key, keylen);
1039 if (ret)
1040 goto out;
1041 crypto_cipher_encrypt_one(cipher, iv, iv);
1042 for (i = 0; i < round8; i++)
1043 gf128mul_x8_ble((le128 *)iv, (le128 *)iv);
1044
1045 for (i = 0; i < (round % 8); i++)
1046 gf128mul_x_ble((le128 *)iv, (le128 *)iv);
1047
1048 if (!isfinal)
1049 crypto_cipher_decrypt_one(cipher, iv, iv);
1050 out:
1051 return ret;
1052 }
1053
1054 static int chcr_update_cipher_iv(struct ablkcipher_request *req,
1055 struct cpl_fw6_pld *fw6_pld, u8 *iv)
1056 {
1057 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
1058 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
1059 int subtype = get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm));
1060 int ret = 0;
1061
1062 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR)
1063 ctr_add_iv(iv, req->info, (reqctx->processed /
1064 AES_BLOCK_SIZE));
1065 else if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_RFC3686)
1066 *(__be32 *)(reqctx->iv + CTR_RFC3686_NONCE_SIZE +
1067 CTR_RFC3686_IV_SIZE) = cpu_to_be32((reqctx->processed /
1068 AES_BLOCK_SIZE) + 1);
1069 else if (subtype == CRYPTO_ALG_SUB_TYPE_XTS)
1070 ret = chcr_update_tweak(req, iv, 0);
1071 else if (subtype == CRYPTO_ALG_SUB_TYPE_CBC) {
1072 if (reqctx->op)
1073 /*Updated before sending last WR*/
1074 memcpy(iv, req->info, AES_BLOCK_SIZE);
1075 else
1076 memcpy(iv, &fw6_pld->data[2], AES_BLOCK_SIZE);
1077 }
1078
1079 return ret;
1080
1081 }
1082
1083 /* We need separate function for final iv because in rfc3686 Initial counter
1084 * starts from 1 and buffer size of iv is 8 byte only which remains constant
1085 * for subsequent update requests
1086 */
1087
1088 static int chcr_final_cipher_iv(struct ablkcipher_request *req,
1089 struct cpl_fw6_pld *fw6_pld, u8 *iv)
1090 {
1091 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
1092 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
1093 int subtype = get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm));
1094 int ret = 0;
1095
1096 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR)
1097 ctr_add_iv(iv, req->info, DIV_ROUND_UP(reqctx->processed,
1098 AES_BLOCK_SIZE));
1099 else if (subtype == CRYPTO_ALG_SUB_TYPE_XTS)
1100 ret = chcr_update_tweak(req, iv, 1);
1101 else if (subtype == CRYPTO_ALG_SUB_TYPE_CBC) {
1102 /*Already updated for Decrypt*/
1103 if (!reqctx->op)
1104 memcpy(iv, &fw6_pld->data[2], AES_BLOCK_SIZE);
1105
1106 }
1107 return ret;
1108
1109 }
1110
1111 static int chcr_handle_cipher_resp(struct ablkcipher_request *req,
1112 unsigned char *input, int err)
1113 {
1114 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
1115 struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm));
1116 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm));
1117 struct sk_buff *skb;
1118 struct cpl_fw6_pld *fw6_pld = (struct cpl_fw6_pld *)input;
1119 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
1120 struct cipher_wr_param wrparam;
1121 struct chcr_dev *dev = c_ctx(tfm)->dev;
1122 int bytes;
1123
1124 if (err)
1125 goto unmap;
1126 if (req->nbytes == reqctx->processed) {
1127 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev,
1128 req);
1129 err = chcr_final_cipher_iv(req, fw6_pld, req->info);
1130 goto complete;
1131 }
1132
1133 if (!reqctx->imm) {
1134 bytes = chcr_sg_ent_in_wr(reqctx->srcsg, reqctx->dstsg, 0,
1135 CIP_SPACE_LEFT(ablkctx->enckey_len),
1136 reqctx->src_ofst, reqctx->dst_ofst);
1137 if ((bytes + reqctx->processed) >= req->nbytes)
1138 bytes = req->nbytes - reqctx->processed;
1139 else
1140 bytes = rounddown(bytes, 16);
1141 } else {
1142 /*CTR mode counter overfloa*/
1143 bytes = req->nbytes - reqctx->processed;
1144 }
1145 err = chcr_update_cipher_iv(req, fw6_pld, reqctx->iv);
1146 if (err)
1147 goto unmap;
1148
1149 if (unlikely(bytes == 0)) {
1150 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev,
1151 req);
1152 err = chcr_cipher_fallback(ablkctx->sw_cipher,
1153 req->base.flags,
1154 req->src,
1155 req->dst,
1156 req->nbytes,
1157 req->info,
1158 reqctx->op);
1159 goto complete;
1160 }
1161
1162 if (get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) ==
1163 CRYPTO_ALG_SUB_TYPE_CTR)
1164 bytes = adjust_ctr_overflow(reqctx->iv, bytes);
1165 wrparam.qid = u_ctx->lldi.rxq_ids[c_ctx(tfm)->rx_qidx];
1166 wrparam.req = req;
1167 wrparam.bytes = bytes;
1168 skb = create_cipher_wr(&wrparam);
1169 if (IS_ERR(skb)) {
1170 pr_err("chcr : %s : Failed to form WR. No memory\n", __func__);
1171 err = PTR_ERR(skb);
1172 goto unmap;
1173 }
1174 skb->dev = u_ctx->lldi.ports[0];
1175 set_wr_txq(skb, CPL_PRIORITY_DATA, c_ctx(tfm)->tx_qidx);
1176 chcr_send_wr(skb);
1177 reqctx->last_req_len = bytes;
1178 reqctx->processed += bytes;
1179 return 0;
1180 unmap:
1181 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req);
1182 complete:
1183 chcr_dec_wrcount(dev);
1184 req->base.complete(&req->base, err);
1185 return err;
1186 }
1187
1188 static int process_cipher(struct ablkcipher_request *req,
1189 unsigned short qid,
1190 struct sk_buff **skb,
1191 unsigned short op_type)
1192 {
1193 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
1194 unsigned int ivsize = crypto_ablkcipher_ivsize(tfm);
1195 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
1196 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm));
1197 struct cipher_wr_param wrparam;
1198 int bytes, err = -EINVAL;
1199
1200 reqctx->processed = 0;
1201 if (!req->info)
1202 goto error;
1203 if ((ablkctx->enckey_len == 0) || (ivsize > AES_BLOCK_SIZE) ||
1204 (req->nbytes == 0) ||
1205 (req->nbytes % crypto_ablkcipher_blocksize(tfm))) {
1206 pr_err("AES: Invalid value of Key Len %d nbytes %d IV Len %d\n",
1207 ablkctx->enckey_len, req->nbytes, ivsize);
1208 goto error;
1209 }
1210
1211 err = chcr_cipher_dma_map(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req);
1212 if (err)
1213 goto error;
1214 if (req->nbytes < (SGE_MAX_WR_LEN - (sizeof(struct chcr_wr) +
1215 AES_MIN_KEY_SIZE +
1216 sizeof(struct cpl_rx_phys_dsgl) +
1217 /*Min dsgl size*/
1218 32))) {
1219 /* Can be sent as Imm*/
1220 unsigned int dnents = 0, transhdr_len, phys_dsgl, kctx_len;
1221
1222 dnents = sg_nents_xlen(req->dst, req->nbytes,
1223 CHCR_DST_SG_SIZE, 0);
1224 phys_dsgl = get_space_for_phys_dsgl(dnents);
1225 kctx_len = roundup(ablkctx->enckey_len, 16);
1226 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, phys_dsgl);
1227 reqctx->imm = (transhdr_len + IV + req->nbytes) <=
1228 SGE_MAX_WR_LEN;
1229 bytes = IV + req->nbytes;
1230
1231 } else {
1232 reqctx->imm = 0;
1233 }
1234
1235 if (!reqctx->imm) {
1236 bytes = chcr_sg_ent_in_wr(req->src, req->dst, 0,
1237 CIP_SPACE_LEFT(ablkctx->enckey_len),
1238 0, 0);
1239 if ((bytes + reqctx->processed) >= req->nbytes)
1240 bytes = req->nbytes - reqctx->processed;
1241 else
1242 bytes = rounddown(bytes, 16);
1243 } else {
1244 bytes = req->nbytes;
1245 }
1246 if (get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) ==
1247 CRYPTO_ALG_SUB_TYPE_CTR) {
1248 bytes = adjust_ctr_overflow(req->info, bytes);
1249 }
1250 if (get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) ==
1251 CRYPTO_ALG_SUB_TYPE_CTR_RFC3686) {
1252 memcpy(reqctx->iv, ablkctx->nonce, CTR_RFC3686_NONCE_SIZE);
1253 memcpy(reqctx->iv + CTR_RFC3686_NONCE_SIZE, req->info,
1254 CTR_RFC3686_IV_SIZE);
1255
1256 /* initialize counter portion of counter block */
1257 *(__be32 *)(reqctx->iv + CTR_RFC3686_NONCE_SIZE +
1258 CTR_RFC3686_IV_SIZE) = cpu_to_be32(1);
1259
1260 } else {
1261
1262 memcpy(reqctx->iv, req->info, IV);
1263 }
1264 if (unlikely(bytes == 0)) {
1265 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev,
1266 req);
1267 err = chcr_cipher_fallback(ablkctx->sw_cipher,
1268 req->base.flags,
1269 req->src,
1270 req->dst,
1271 req->nbytes,
1272 reqctx->iv,
1273 op_type);
1274 goto error;
1275 }
1276 reqctx->op = op_type;
1277 reqctx->srcsg = req->src;
1278 reqctx->dstsg = req->dst;
1279 reqctx->src_ofst = 0;
1280 reqctx->dst_ofst = 0;
1281 wrparam.qid = qid;
1282 wrparam.req = req;
1283 wrparam.bytes = bytes;
1284 *skb = create_cipher_wr(&wrparam);
1285 if (IS_ERR(*skb)) {
1286 err = PTR_ERR(*skb);
1287 goto unmap;
1288 }
1289 reqctx->processed = bytes;
1290 reqctx->last_req_len = bytes;
1291
1292 return 0;
1293 unmap:
1294 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req);
1295 error:
1296 return err;
1297 }
1298
1299 static int chcr_aes_encrypt(struct ablkcipher_request *req)
1300 {
1301 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
1302 struct chcr_dev *dev = c_ctx(tfm)->dev;
1303 struct sk_buff *skb = NULL;
1304 int err, isfull = 0;
1305 struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm));
1306
1307 err = chcr_inc_wrcount(dev);
1308 if (err)
1309 return -ENXIO;
1310 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
1311 c_ctx(tfm)->tx_qidx))) {
1312 isfull = 1;
1313 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) {
1314 err = -ENOSPC;
1315 goto error;
1316 }
1317 }
1318
1319 err = process_cipher(req, u_ctx->lldi.rxq_ids[c_ctx(tfm)->rx_qidx],
1320 &skb, CHCR_ENCRYPT_OP);
1321 if (err || !skb)
1322 return err;
1323 skb->dev = u_ctx->lldi.ports[0];
1324 set_wr_txq(skb, CPL_PRIORITY_DATA, c_ctx(tfm)->tx_qidx);
1325 chcr_send_wr(skb);
1326 return isfull ? -EBUSY : -EINPROGRESS;
1327 error:
1328 chcr_dec_wrcount(dev);
1329 return err;
1330 }
1331
1332 static int chcr_aes_decrypt(struct ablkcipher_request *req)
1333 {
1334 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
1335 struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm));
1336 struct chcr_dev *dev = c_ctx(tfm)->dev;
1337 struct sk_buff *skb = NULL;
1338 int err, isfull = 0;
1339
1340 err = chcr_inc_wrcount(dev);
1341 if (err)
1342 return -ENXIO;
1343
1344 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
1345 c_ctx(tfm)->tx_qidx))) {
1346 isfull = 1;
1347 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
1348 return -ENOSPC;
1349 }
1350
1351 err = process_cipher(req, u_ctx->lldi.rxq_ids[c_ctx(tfm)->rx_qidx],
1352 &skb, CHCR_DECRYPT_OP);
1353 if (err || !skb)
1354 return err;
1355 skb->dev = u_ctx->lldi.ports[0];
1356 set_wr_txq(skb, CPL_PRIORITY_DATA, c_ctx(tfm)->tx_qidx);
1357 chcr_send_wr(skb);
1358 return isfull ? -EBUSY : -EINPROGRESS;
1359 }
1360
1361 static int chcr_device_init(struct chcr_context *ctx)
1362 {
1363 struct uld_ctx *u_ctx = NULL;
1364 unsigned int id;
1365 int txq_perchan, txq_idx, ntxq;
1366 int err = 0, rxq_perchan, rxq_idx;
1367
1368 id = smp_processor_id();
1369 if (!ctx->dev) {
1370 u_ctx = assign_chcr_device();
1371 if (!u_ctx) {
1372 err = -ENXIO;
1373 pr_err("chcr device assignment fails\n");
1374 goto out;
1375 }
1376 ctx->dev = &u_ctx->dev;
1377 ntxq = u_ctx->lldi.ntxq;
1378 rxq_perchan = u_ctx->lldi.nrxq / u_ctx->lldi.nchan;
1379 txq_perchan = ntxq / u_ctx->lldi.nchan;
1380 spin_lock(&ctx->dev->lock_chcr_dev);
1381 ctx->tx_chan_id = ctx->dev->tx_channel_id;
1382 ctx->dev->tx_channel_id = !ctx->dev->tx_channel_id;
1383 spin_unlock(&ctx->dev->lock_chcr_dev);
1384 rxq_idx = ctx->tx_chan_id * rxq_perchan;
1385 rxq_idx += id % rxq_perchan;
1386 txq_idx = ctx->tx_chan_id * txq_perchan;
1387 txq_idx += id % txq_perchan;
1388 ctx->rx_qidx = rxq_idx;
1389 ctx->tx_qidx = txq_idx;
1390 /* Channel Id used by SGE to forward packet to Host.
1391 * Same value should be used in cpl_fw6_pld RSS_CH field
1392 * by FW. Driver programs PCI channel ID to be used in fw
1393 * at the time of queue allocation with value "pi->tx_chan"
1394 */
1395 ctx->pci_chan_id = txq_idx / txq_perchan;
1396 }
1397 out:
1398 return err;
1399 }
1400
1401 static int chcr_cra_init(struct crypto_tfm *tfm)
1402 {
1403 struct crypto_alg *alg = tfm->__crt_alg;
1404 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
1405 struct ablk_ctx *ablkctx = ABLK_CTX(ctx);
1406
1407 ablkctx->sw_cipher = crypto_alloc_sync_skcipher(alg->cra_name, 0,
1408 CRYPTO_ALG_NEED_FALLBACK);
1409 if (IS_ERR(ablkctx->sw_cipher)) {
1410 pr_err("failed to allocate fallback for %s\n", alg->cra_name);
1411 return PTR_ERR(ablkctx->sw_cipher);
1412 }
1413
1414 if (get_cryptoalg_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_XTS) {
1415 /* To update tweak*/
1416 ablkctx->aes_generic = crypto_alloc_cipher("aes-generic", 0, 0);
1417 if (IS_ERR(ablkctx->aes_generic)) {
1418 pr_err("failed to allocate aes cipher for tweak\n");
1419 return PTR_ERR(ablkctx->aes_generic);
1420 }
1421 } else
1422 ablkctx->aes_generic = NULL;
1423
1424 tfm->crt_ablkcipher.reqsize = sizeof(struct chcr_blkcipher_req_ctx);
1425 return chcr_device_init(crypto_tfm_ctx(tfm));
1426 }
1427
1428 static int chcr_rfc3686_init(struct crypto_tfm *tfm)
1429 {
1430 struct crypto_alg *alg = tfm->__crt_alg;
1431 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
1432 struct ablk_ctx *ablkctx = ABLK_CTX(ctx);
1433
1434 /*RFC3686 initialises IV counter value to 1, rfc3686(ctr(aes))
1435 * cannot be used as fallback in chcr_handle_cipher_response
1436 */
1437 ablkctx->sw_cipher = crypto_alloc_sync_skcipher("ctr(aes)", 0,
1438 CRYPTO_ALG_NEED_FALLBACK);
1439 if (IS_ERR(ablkctx->sw_cipher)) {
1440 pr_err("failed to allocate fallback for %s\n", alg->cra_name);
1441 return PTR_ERR(ablkctx->sw_cipher);
1442 }
1443 tfm->crt_ablkcipher.reqsize = sizeof(struct chcr_blkcipher_req_ctx);
1444 return chcr_device_init(crypto_tfm_ctx(tfm));
1445 }
1446
1447
1448 static void chcr_cra_exit(struct crypto_tfm *tfm)
1449 {
1450 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
1451 struct ablk_ctx *ablkctx = ABLK_CTX(ctx);
1452
1453 crypto_free_sync_skcipher(ablkctx->sw_cipher);
1454 if (ablkctx->aes_generic)
1455 crypto_free_cipher(ablkctx->aes_generic);
1456 }
1457
1458 static int get_alg_config(struct algo_param *params,
1459 unsigned int auth_size)
1460 {
1461 switch (auth_size) {
1462 case SHA1_DIGEST_SIZE:
1463 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_160;
1464 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA1;
1465 params->result_size = SHA1_DIGEST_SIZE;
1466 break;
1467 case SHA224_DIGEST_SIZE:
1468 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256;
1469 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA224;
1470 params->result_size = SHA256_DIGEST_SIZE;
1471 break;
1472 case SHA256_DIGEST_SIZE:
1473 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256;
1474 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA256;
1475 params->result_size = SHA256_DIGEST_SIZE;
1476 break;
1477 case SHA384_DIGEST_SIZE:
1478 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_512;
1479 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA512_384;
1480 params->result_size = SHA512_DIGEST_SIZE;
1481 break;
1482 case SHA512_DIGEST_SIZE:
1483 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_512;
1484 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA512_512;
1485 params->result_size = SHA512_DIGEST_SIZE;
1486 break;
1487 default:
1488 pr_err("chcr : ERROR, unsupported digest size\n");
1489 return -EINVAL;
1490 }
1491 return 0;
1492 }
1493
1494 static inline void chcr_free_shash(struct crypto_shash *base_hash)
1495 {
1496 crypto_free_shash(base_hash);
1497 }
1498
1499 /**
1500 * create_hash_wr - Create hash work request
1501 * @req - Cipher req base
1502 */
1503 static struct sk_buff *create_hash_wr(struct ahash_request *req,
1504 struct hash_wr_param *param)
1505 {
1506 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1507 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
1508 struct hmac_ctx *hmacctx = HMAC_CTX(h_ctx(tfm));
1509 struct sk_buff *skb = NULL;
1510 struct uld_ctx *u_ctx = ULD_CTX(h_ctx(tfm));
1511 struct chcr_wr *chcr_req;
1512 struct ulptx_sgl *ulptx;
1513 unsigned int nents = 0, transhdr_len;
1514 unsigned int temp = 0;
1515 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
1516 GFP_ATOMIC;
1517 struct adapter *adap = padap(h_ctx(tfm)->dev);
1518 int error = 0;
1519
1520 transhdr_len = HASH_TRANSHDR_SIZE(param->kctx_len);
1521 req_ctx->hctx_wr.imm = (transhdr_len + param->bfr_len +
1522 param->sg_len) <= SGE_MAX_WR_LEN;
1523 nents = sg_nents_xlen(req_ctx->hctx_wr.srcsg, param->sg_len,
1524 CHCR_SRC_SG_SIZE, req_ctx->hctx_wr.src_ofst);
1525 nents += param->bfr_len ? 1 : 0;
1526 transhdr_len += req_ctx->hctx_wr.imm ? roundup(param->bfr_len +
1527 param->sg_len, 16) : (sgl_len(nents) * 8);
1528 transhdr_len = roundup(transhdr_len, 16);
1529
1530 skb = alloc_skb(transhdr_len, flags);
1531 if (!skb)
1532 return ERR_PTR(-ENOMEM);
1533 chcr_req = __skb_put_zero(skb, transhdr_len);
1534
1535 chcr_req->sec_cpl.op_ivinsrtofst =
1536 FILL_SEC_CPL_OP_IVINSR(h_ctx(tfm)->tx_chan_id, 2, 0);
1537 chcr_req->sec_cpl.pldlen = htonl(param->bfr_len + param->sg_len);
1538
1539 chcr_req->sec_cpl.aadstart_cipherstop_hi =
1540 FILL_SEC_CPL_CIPHERSTOP_HI(0, 0, 0, 0);
1541 chcr_req->sec_cpl.cipherstop_lo_authinsert =
1542 FILL_SEC_CPL_AUTHINSERT(0, 1, 0, 0);
1543 chcr_req->sec_cpl.seqno_numivs =
1544 FILL_SEC_CPL_SCMD0_SEQNO(0, 0, 0, param->alg_prm.auth_mode,
1545 param->opad_needed, 0);
1546
1547 chcr_req->sec_cpl.ivgen_hdrlen =
1548 FILL_SEC_CPL_IVGEN_HDRLEN(param->last, param->more, 0, 1, 0, 0);
1549
1550 memcpy(chcr_req->key_ctx.key, req_ctx->partial_hash,
1551 param->alg_prm.result_size);
1552
1553 if (param->opad_needed)
1554 memcpy(chcr_req->key_ctx.key +
1555 ((param->alg_prm.result_size <= 32) ? 32 :
1556 CHCR_HASH_MAX_DIGEST_SIZE),
1557 hmacctx->opad, param->alg_prm.result_size);
1558
1559 chcr_req->key_ctx.ctx_hdr = FILL_KEY_CTX_HDR(CHCR_KEYCTX_NO_KEY,
1560 param->alg_prm.mk_size, 0,
1561 param->opad_needed,
1562 ((param->kctx_len +
1563 sizeof(chcr_req->key_ctx)) >> 4));
1564 chcr_req->sec_cpl.scmd1 = cpu_to_be64((u64)param->scmd1);
1565 ulptx = (struct ulptx_sgl *)((u8 *)(chcr_req + 1) + param->kctx_len +
1566 DUMMY_BYTES);
1567 if (param->bfr_len != 0) {
1568 req_ctx->hctx_wr.dma_addr =
1569 dma_map_single(&u_ctx->lldi.pdev->dev, req_ctx->reqbfr,
1570 param->bfr_len, DMA_TO_DEVICE);
1571 if (dma_mapping_error(&u_ctx->lldi.pdev->dev,
1572 req_ctx->hctx_wr. dma_addr)) {
1573 error = -ENOMEM;
1574 goto err;
1575 }
1576 req_ctx->hctx_wr.dma_len = param->bfr_len;
1577 } else {
1578 req_ctx->hctx_wr.dma_addr = 0;
1579 }
1580 chcr_add_hash_src_ent(req, ulptx, param);
1581 /* Request upto max wr size */
1582 temp = param->kctx_len + DUMMY_BYTES + (req_ctx->hctx_wr.imm ?
1583 (param->sg_len + param->bfr_len) : 0);
1584 atomic_inc(&adap->chcr_stats.digest_rqst);
1585 create_wreq(h_ctx(tfm), chcr_req, &req->base, req_ctx->hctx_wr.imm,
1586 param->hash_size, transhdr_len,
1587 temp, 0);
1588 req_ctx->hctx_wr.skb = skb;
1589 return skb;
1590 err:
1591 kfree_skb(skb);
1592 return ERR_PTR(error);
1593 }
1594
1595 static int chcr_ahash_update(struct ahash_request *req)
1596 {
1597 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1598 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
1599 struct uld_ctx *u_ctx = NULL;
1600 struct chcr_dev *dev = h_ctx(rtfm)->dev;
1601 struct sk_buff *skb;
1602 u8 remainder = 0, bs;
1603 unsigned int nbytes = req->nbytes;
1604 struct hash_wr_param params;
1605 int error, isfull = 0;
1606
1607 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1608 u_ctx = ULD_CTX(h_ctx(rtfm));
1609
1610 if (nbytes + req_ctx->reqlen >= bs) {
1611 remainder = (nbytes + req_ctx->reqlen) % bs;
1612 nbytes = nbytes + req_ctx->reqlen - remainder;
1613 } else {
1614 sg_pcopy_to_buffer(req->src, sg_nents(req->src), req_ctx->reqbfr
1615 + req_ctx->reqlen, nbytes, 0);
1616 req_ctx->reqlen += nbytes;
1617 return 0;
1618 }
1619 error = chcr_inc_wrcount(dev);
1620 if (error)
1621 return -ENXIO;
1622 /* Detach state for CHCR means lldi or padap is freed. Increasing
1623 * inflight count for dev guarantees that lldi and padap is valid
1624 */
1625 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
1626 h_ctx(rtfm)->tx_qidx))) {
1627 isfull = 1;
1628 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) {
1629 error = -ENOSPC;
1630 goto err;
1631 }
1632 }
1633
1634 chcr_init_hctx_per_wr(req_ctx);
1635 error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req);
1636 if (error) {
1637 error = -ENOMEM;
1638 goto err;
1639 }
1640 get_alg_config(&params.alg_prm, crypto_ahash_digestsize(rtfm));
1641 params.kctx_len = roundup(params.alg_prm.result_size, 16);
1642 params.sg_len = chcr_hash_ent_in_wr(req->src, !!req_ctx->reqlen,
1643 HASH_SPACE_LEFT(params.kctx_len), 0);
1644 if (params.sg_len > req->nbytes)
1645 params.sg_len = req->nbytes;
1646 params.sg_len = rounddown(params.sg_len + req_ctx->reqlen, bs) -
1647 req_ctx->reqlen;
1648 params.opad_needed = 0;
1649 params.more = 1;
1650 params.last = 0;
1651 params.bfr_len = req_ctx->reqlen;
1652 params.scmd1 = 0;
1653 req_ctx->hctx_wr.srcsg = req->src;
1654
1655 params.hash_size = params.alg_prm.result_size;
1656 req_ctx->data_len += params.sg_len + params.bfr_len;
1657 skb = create_hash_wr(req, &params);
1658 if (IS_ERR(skb)) {
1659 error = PTR_ERR(skb);
1660 goto unmap;
1661 }
1662
1663 req_ctx->hctx_wr.processed += params.sg_len;
1664 if (remainder) {
1665 /* Swap buffers */
1666 swap(req_ctx->reqbfr, req_ctx->skbfr);
1667 sg_pcopy_to_buffer(req->src, sg_nents(req->src),
1668 req_ctx->reqbfr, remainder, req->nbytes -
1669 remainder);
1670 }
1671 req_ctx->reqlen = remainder;
1672 skb->dev = u_ctx->lldi.ports[0];
1673 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx);
1674 chcr_send_wr(skb);
1675
1676 return isfull ? -EBUSY : -EINPROGRESS;
1677 unmap:
1678 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
1679 err:
1680 chcr_dec_wrcount(dev);
1681 return error;
1682 }
1683
1684 static void create_last_hash_block(char *bfr_ptr, unsigned int bs, u64 scmd1)
1685 {
1686 memset(bfr_ptr, 0, bs);
1687 *bfr_ptr = 0x80;
1688 if (bs == 64)
1689 *(__be64 *)(bfr_ptr + 56) = cpu_to_be64(scmd1 << 3);
1690 else
1691 *(__be64 *)(bfr_ptr + 120) = cpu_to_be64(scmd1 << 3);
1692 }
1693
1694 static int chcr_ahash_final(struct ahash_request *req)
1695 {
1696 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1697 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
1698 struct chcr_dev *dev = h_ctx(rtfm)->dev;
1699 struct hash_wr_param params;
1700 struct sk_buff *skb;
1701 struct uld_ctx *u_ctx = NULL;
1702 u8 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1703 int error = -EINVAL;
1704
1705 error = chcr_inc_wrcount(dev);
1706 if (error)
1707 return -ENXIO;
1708
1709 chcr_init_hctx_per_wr(req_ctx);
1710 u_ctx = ULD_CTX(h_ctx(rtfm));
1711 if (is_hmac(crypto_ahash_tfm(rtfm)))
1712 params.opad_needed = 1;
1713 else
1714 params.opad_needed = 0;
1715 params.sg_len = 0;
1716 req_ctx->hctx_wr.isfinal = 1;
1717 get_alg_config(&params.alg_prm, crypto_ahash_digestsize(rtfm));
1718 params.kctx_len = roundup(params.alg_prm.result_size, 16);
1719 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1720 params.opad_needed = 1;
1721 params.kctx_len *= 2;
1722 } else {
1723 params.opad_needed = 0;
1724 }
1725
1726 req_ctx->hctx_wr.result = 1;
1727 params.bfr_len = req_ctx->reqlen;
1728 req_ctx->data_len += params.bfr_len + params.sg_len;
1729 req_ctx->hctx_wr.srcsg = req->src;
1730 if (req_ctx->reqlen == 0) {
1731 create_last_hash_block(req_ctx->reqbfr, bs, req_ctx->data_len);
1732 params.last = 0;
1733 params.more = 1;
1734 params.scmd1 = 0;
1735 params.bfr_len = bs;
1736
1737 } else {
1738 params.scmd1 = req_ctx->data_len;
1739 params.last = 1;
1740 params.more = 0;
1741 }
1742 params.hash_size = crypto_ahash_digestsize(rtfm);
1743 skb = create_hash_wr(req, &params);
1744 if (IS_ERR(skb)) {
1745 error = PTR_ERR(skb);
1746 goto err;
1747 }
1748 req_ctx->reqlen = 0;
1749 skb->dev = u_ctx->lldi.ports[0];
1750 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx);
1751 chcr_send_wr(skb);
1752 return -EINPROGRESS;
1753 err:
1754 chcr_dec_wrcount(dev);
1755 return error;
1756 }
1757
1758 static int chcr_ahash_finup(struct ahash_request *req)
1759 {
1760 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1761 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
1762 struct chcr_dev *dev = h_ctx(rtfm)->dev;
1763 struct uld_ctx *u_ctx = NULL;
1764 struct sk_buff *skb;
1765 struct hash_wr_param params;
1766 u8 bs;
1767 int error, isfull = 0;
1768
1769 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1770 u_ctx = ULD_CTX(h_ctx(rtfm));
1771 error = chcr_inc_wrcount(dev);
1772 if (error)
1773 return -ENXIO;
1774
1775 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
1776 h_ctx(rtfm)->tx_qidx))) {
1777 isfull = 1;
1778 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) {
1779 error = -ENOSPC;
1780 goto err;
1781 }
1782 }
1783 chcr_init_hctx_per_wr(req_ctx);
1784 error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req);
1785 if (error) {
1786 error = -ENOMEM;
1787 goto err;
1788 }
1789
1790 get_alg_config(&params.alg_prm, crypto_ahash_digestsize(rtfm));
1791 params.kctx_len = roundup(params.alg_prm.result_size, 16);
1792 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1793 params.kctx_len *= 2;
1794 params.opad_needed = 1;
1795 } else {
1796 params.opad_needed = 0;
1797 }
1798
1799 params.sg_len = chcr_hash_ent_in_wr(req->src, !!req_ctx->reqlen,
1800 HASH_SPACE_LEFT(params.kctx_len), 0);
1801 if (params.sg_len < req->nbytes) {
1802 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1803 params.kctx_len /= 2;
1804 params.opad_needed = 0;
1805 }
1806 params.last = 0;
1807 params.more = 1;
1808 params.sg_len = rounddown(params.sg_len + req_ctx->reqlen, bs)
1809 - req_ctx->reqlen;
1810 params.hash_size = params.alg_prm.result_size;
1811 params.scmd1 = 0;
1812 } else {
1813 params.last = 1;
1814 params.more = 0;
1815 params.sg_len = req->nbytes;
1816 params.hash_size = crypto_ahash_digestsize(rtfm);
1817 params.scmd1 = req_ctx->data_len + req_ctx->reqlen +
1818 params.sg_len;
1819 }
1820 params.bfr_len = req_ctx->reqlen;
1821 req_ctx->data_len += params.bfr_len + params.sg_len;
1822 req_ctx->hctx_wr.result = 1;
1823 req_ctx->hctx_wr.srcsg = req->src;
1824 if ((req_ctx->reqlen + req->nbytes) == 0) {
1825 create_last_hash_block(req_ctx->reqbfr, bs, req_ctx->data_len);
1826 params.last = 0;
1827 params.more = 1;
1828 params.scmd1 = 0;
1829 params.bfr_len = bs;
1830 }
1831 skb = create_hash_wr(req, &params);
1832 if (IS_ERR(skb)) {
1833 error = PTR_ERR(skb);
1834 goto unmap;
1835 }
1836 req_ctx->reqlen = 0;
1837 req_ctx->hctx_wr.processed += params.sg_len;
1838 skb->dev = u_ctx->lldi.ports[0];
1839 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx);
1840 chcr_send_wr(skb);
1841
1842 return isfull ? -EBUSY : -EINPROGRESS;
1843 unmap:
1844 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
1845 err:
1846 chcr_dec_wrcount(dev);
1847 return error;
1848 }
1849
1850 static int chcr_ahash_digest(struct ahash_request *req)
1851 {
1852 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1853 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
1854 struct chcr_dev *dev = h_ctx(rtfm)->dev;
1855 struct uld_ctx *u_ctx = NULL;
1856 struct sk_buff *skb;
1857 struct hash_wr_param params;
1858 u8 bs;
1859 int error, isfull = 0;
1860
1861 rtfm->init(req);
1862 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1863 error = chcr_inc_wrcount(dev);
1864 if (error)
1865 return -ENXIO;
1866
1867 u_ctx = ULD_CTX(h_ctx(rtfm));
1868 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
1869 h_ctx(rtfm)->tx_qidx))) {
1870 isfull = 1;
1871 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) {
1872 error = -ENOSPC;
1873 goto err;
1874 }
1875 }
1876
1877 chcr_init_hctx_per_wr(req_ctx);
1878 error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req);
1879 if (error) {
1880 error = -ENOMEM;
1881 goto err;
1882 }
1883
1884 get_alg_config(&params.alg_prm, crypto_ahash_digestsize(rtfm));
1885 params.kctx_len = roundup(params.alg_prm.result_size, 16);
1886 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1887 params.kctx_len *= 2;
1888 params.opad_needed = 1;
1889 } else {
1890 params.opad_needed = 0;
1891 }
1892 params.sg_len = chcr_hash_ent_in_wr(req->src, !!req_ctx->reqlen,
1893 HASH_SPACE_LEFT(params.kctx_len), 0);
1894 if (params.sg_len < req->nbytes) {
1895 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1896 params.kctx_len /= 2;
1897 params.opad_needed = 0;
1898 }
1899 params.last = 0;
1900 params.more = 1;
1901 params.scmd1 = 0;
1902 params.sg_len = rounddown(params.sg_len, bs);
1903 params.hash_size = params.alg_prm.result_size;
1904 } else {
1905 params.sg_len = req->nbytes;
1906 params.hash_size = crypto_ahash_digestsize(rtfm);
1907 params.last = 1;
1908 params.more = 0;
1909 params.scmd1 = req->nbytes + req_ctx->data_len;
1910
1911 }
1912 params.bfr_len = 0;
1913 req_ctx->hctx_wr.result = 1;
1914 req_ctx->hctx_wr.srcsg = req->src;
1915 req_ctx->data_len += params.bfr_len + params.sg_len;
1916
1917 if (req->nbytes == 0) {
1918 create_last_hash_block(req_ctx->reqbfr, bs, 0);
1919 params.more = 1;
1920 params.bfr_len = bs;
1921 }
1922
1923 skb = create_hash_wr(req, &params);
1924 if (IS_ERR(skb)) {
1925 error = PTR_ERR(skb);
1926 goto unmap;
1927 }
1928 req_ctx->hctx_wr.processed += params.sg_len;
1929 skb->dev = u_ctx->lldi.ports[0];
1930 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx);
1931 chcr_send_wr(skb);
1932 return isfull ? -EBUSY : -EINPROGRESS;
1933 unmap:
1934 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
1935 err:
1936 chcr_dec_wrcount(dev);
1937 return error;
1938 }
1939
1940 static int chcr_ahash_continue(struct ahash_request *req)
1941 {
1942 struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req);
1943 struct chcr_hctx_per_wr *hctx_wr = &reqctx->hctx_wr;
1944 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
1945 struct uld_ctx *u_ctx = NULL;
1946 struct sk_buff *skb;
1947 struct hash_wr_param params;
1948 u8 bs;
1949 int error;
1950
1951 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1952 u_ctx = ULD_CTX(h_ctx(rtfm));
1953 get_alg_config(&params.alg_prm, crypto_ahash_digestsize(rtfm));
1954 params.kctx_len = roundup(params.alg_prm.result_size, 16);
1955 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1956 params.kctx_len *= 2;
1957 params.opad_needed = 1;
1958 } else {
1959 params.opad_needed = 0;
1960 }
1961 params.sg_len = chcr_hash_ent_in_wr(hctx_wr->srcsg, 0,
1962 HASH_SPACE_LEFT(params.kctx_len),
1963 hctx_wr->src_ofst);
1964 if ((params.sg_len + hctx_wr->processed) > req->nbytes)
1965 params.sg_len = req->nbytes - hctx_wr->processed;
1966 if (!hctx_wr->result ||
1967 ((params.sg_len + hctx_wr->processed) < req->nbytes)) {
1968 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1969 params.kctx_len /= 2;
1970 params.opad_needed = 0;
1971 }
1972 params.last = 0;
1973 params.more = 1;
1974 params.sg_len = rounddown(params.sg_len, bs);
1975 params.hash_size = params.alg_prm.result_size;
1976 params.scmd1 = 0;
1977 } else {
1978 params.last = 1;
1979 params.more = 0;
1980 params.hash_size = crypto_ahash_digestsize(rtfm);
1981 params.scmd1 = reqctx->data_len + params.sg_len;
1982 }
1983 params.bfr_len = 0;
1984 reqctx->data_len += params.sg_len;
1985 skb = create_hash_wr(req, &params);
1986 if (IS_ERR(skb)) {
1987 error = PTR_ERR(skb);
1988 goto err;
1989 }
1990 hctx_wr->processed += params.sg_len;
1991 skb->dev = u_ctx->lldi.ports[0];
1992 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx);
1993 chcr_send_wr(skb);
1994 return 0;
1995 err:
1996 return error;
1997 }
1998
1999 static inline void chcr_handle_ahash_resp(struct ahash_request *req,
2000 unsigned char *input,
2001 int err)
2002 {
2003 struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req);
2004 struct chcr_hctx_per_wr *hctx_wr = &reqctx->hctx_wr;
2005 int digestsize, updated_digestsize;
2006 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
2007 struct uld_ctx *u_ctx = ULD_CTX(h_ctx(tfm));
2008 struct chcr_dev *dev = h_ctx(tfm)->dev;
2009
2010 if (input == NULL)
2011 goto out;
2012 digestsize = crypto_ahash_digestsize(crypto_ahash_reqtfm(req));
2013 updated_digestsize = digestsize;
2014 if (digestsize == SHA224_DIGEST_SIZE)
2015 updated_digestsize = SHA256_DIGEST_SIZE;
2016 else if (digestsize == SHA384_DIGEST_SIZE)
2017 updated_digestsize = SHA512_DIGEST_SIZE;
2018
2019 if (hctx_wr->dma_addr) {
2020 dma_unmap_single(&u_ctx->lldi.pdev->dev, hctx_wr->dma_addr,
2021 hctx_wr->dma_len, DMA_TO_DEVICE);
2022 hctx_wr->dma_addr = 0;
2023 }
2024 if (hctx_wr->isfinal || ((hctx_wr->processed + reqctx->reqlen) ==
2025 req->nbytes)) {
2026 if (hctx_wr->result == 1) {
2027 hctx_wr->result = 0;
2028 memcpy(req->result, input + sizeof(struct cpl_fw6_pld),
2029 digestsize);
2030 } else {
2031 memcpy(reqctx->partial_hash,
2032 input + sizeof(struct cpl_fw6_pld),
2033 updated_digestsize);
2034
2035 }
2036 goto unmap;
2037 }
2038 memcpy(reqctx->partial_hash, input + sizeof(struct cpl_fw6_pld),
2039 updated_digestsize);
2040
2041 err = chcr_ahash_continue(req);
2042 if (err)
2043 goto unmap;
2044 return;
2045 unmap:
2046 if (hctx_wr->is_sg_map)
2047 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
2048
2049
2050 out:
2051 chcr_dec_wrcount(dev);
2052 req->base.complete(&req->base, err);
2053 }
2054
2055 /*
2056 * chcr_handle_resp - Unmap the DMA buffers associated with the request
2057 * @req: crypto request
2058 */
2059 int chcr_handle_resp(struct crypto_async_request *req, unsigned char *input,
2060 int err)
2061 {
2062 struct crypto_tfm *tfm = req->tfm;
2063 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
2064 struct adapter *adap = padap(ctx->dev);
2065
2066 switch (tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK) {
2067 case CRYPTO_ALG_TYPE_AEAD:
2068 err = chcr_handle_aead_resp(aead_request_cast(req), input, err);
2069 break;
2070
2071 case CRYPTO_ALG_TYPE_ABLKCIPHER:
2072 chcr_handle_cipher_resp(ablkcipher_request_cast(req),
2073 input, err);
2074 break;
2075 case CRYPTO_ALG_TYPE_AHASH:
2076 chcr_handle_ahash_resp(ahash_request_cast(req), input, err);
2077 }
2078 atomic_inc(&adap->chcr_stats.complete);
2079 return err;
2080 }
2081 static int chcr_ahash_export(struct ahash_request *areq, void *out)
2082 {
2083 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
2084 struct chcr_ahash_req_ctx *state = out;
2085
2086 state->reqlen = req_ctx->reqlen;
2087 state->data_len = req_ctx->data_len;
2088 memcpy(state->bfr1, req_ctx->reqbfr, req_ctx->reqlen);
2089 memcpy(state->partial_hash, req_ctx->partial_hash,
2090 CHCR_HASH_MAX_DIGEST_SIZE);
2091 chcr_init_hctx_per_wr(state);
2092 return 0;
2093 }
2094
2095 static int chcr_ahash_import(struct ahash_request *areq, const void *in)
2096 {
2097 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
2098 struct chcr_ahash_req_ctx *state = (struct chcr_ahash_req_ctx *)in;
2099
2100 req_ctx->reqlen = state->reqlen;
2101 req_ctx->data_len = state->data_len;
2102 req_ctx->reqbfr = req_ctx->bfr1;
2103 req_ctx->skbfr = req_ctx->bfr2;
2104 memcpy(req_ctx->bfr1, state->bfr1, CHCR_HASH_MAX_BLOCK_SIZE_128);
2105 memcpy(req_ctx->partial_hash, state->partial_hash,
2106 CHCR_HASH_MAX_DIGEST_SIZE);
2107 chcr_init_hctx_per_wr(req_ctx);
2108 return 0;
2109 }
2110
2111 static int chcr_ahash_setkey(struct crypto_ahash *tfm, const u8 *key,
2112 unsigned int keylen)
2113 {
2114 struct hmac_ctx *hmacctx = HMAC_CTX(h_ctx(tfm));
2115 unsigned int digestsize = crypto_ahash_digestsize(tfm);
2116 unsigned int bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm));
2117 unsigned int i, err = 0, updated_digestsize;
2118
2119 SHASH_DESC_ON_STACK(shash, hmacctx->base_hash);
2120
2121 /* use the key to calculate the ipad and opad. ipad will sent with the
2122 * first request's data. opad will be sent with the final hash result
2123 * ipad in hmacctx->ipad and opad in hmacctx->opad location
2124 */
2125 shash->tfm = hmacctx->base_hash;
2126 if (keylen > bs) {
2127 err = crypto_shash_digest(shash, key, keylen,
2128 hmacctx->ipad);
2129 if (err)
2130 goto out;
2131 keylen = digestsize;
2132 } else {
2133 memcpy(hmacctx->ipad, key, keylen);
2134 }
2135 memset(hmacctx->ipad + keylen, 0, bs - keylen);
2136 memcpy(hmacctx->opad, hmacctx->ipad, bs);
2137
2138 for (i = 0; i < bs / sizeof(int); i++) {
2139 *((unsigned int *)(&hmacctx->ipad) + i) ^= IPAD_DATA;
2140 *((unsigned int *)(&hmacctx->opad) + i) ^= OPAD_DATA;
2141 }
2142
2143 updated_digestsize = digestsize;
2144 if (digestsize == SHA224_DIGEST_SIZE)
2145 updated_digestsize = SHA256_DIGEST_SIZE;
2146 else if (digestsize == SHA384_DIGEST_SIZE)
2147 updated_digestsize = SHA512_DIGEST_SIZE;
2148 err = chcr_compute_partial_hash(shash, hmacctx->ipad,
2149 hmacctx->ipad, digestsize);
2150 if (err)
2151 goto out;
2152 chcr_change_order(hmacctx->ipad, updated_digestsize);
2153
2154 err = chcr_compute_partial_hash(shash, hmacctx->opad,
2155 hmacctx->opad, digestsize);
2156 if (err)
2157 goto out;
2158 chcr_change_order(hmacctx->opad, updated_digestsize);
2159 out:
2160 return err;
2161 }
2162
2163 static int chcr_aes_xts_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
2164 unsigned int key_len)
2165 {
2166 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
2167 unsigned short context_size = 0;
2168 int err;
2169
2170 err = chcr_cipher_fallback_setkey(cipher, key, key_len);
2171 if (err)
2172 goto badkey_err;
2173
2174 memcpy(ablkctx->key, key, key_len);
2175 ablkctx->enckey_len = key_len;
2176 get_aes_decrypt_key(ablkctx->rrkey, ablkctx->key, key_len << 2);
2177 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD + key_len) >> 4;
2178 ablkctx->key_ctx_hdr =
2179 FILL_KEY_CTX_HDR((key_len == AES_KEYSIZE_256) ?
2180 CHCR_KEYCTX_CIPHER_KEY_SIZE_128 :
2181 CHCR_KEYCTX_CIPHER_KEY_SIZE_256,
2182 CHCR_KEYCTX_NO_KEY, 1,
2183 0, context_size);
2184 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_XTS;
2185 return 0;
2186 badkey_err:
2187 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
2188 ablkctx->enckey_len = 0;
2189
2190 return err;
2191 }
2192
2193 static int chcr_sha_init(struct ahash_request *areq)
2194 {
2195 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
2196 struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
2197 int digestsize = crypto_ahash_digestsize(tfm);
2198
2199 req_ctx->data_len = 0;
2200 req_ctx->reqlen = 0;
2201 req_ctx->reqbfr = req_ctx->bfr1;
2202 req_ctx->skbfr = req_ctx->bfr2;
2203 copy_hash_init_values(req_ctx->partial_hash, digestsize);
2204
2205 return 0;
2206 }
2207
2208 static int chcr_sha_cra_init(struct crypto_tfm *tfm)
2209 {
2210 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
2211 sizeof(struct chcr_ahash_req_ctx));
2212 return chcr_device_init(crypto_tfm_ctx(tfm));
2213 }
2214
2215 static int chcr_hmac_init(struct ahash_request *areq)
2216 {
2217 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
2218 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(areq);
2219 struct hmac_ctx *hmacctx = HMAC_CTX(h_ctx(rtfm));
2220 unsigned int digestsize = crypto_ahash_digestsize(rtfm);
2221 unsigned int bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
2222
2223 chcr_sha_init(areq);
2224 req_ctx->data_len = bs;
2225 if (is_hmac(crypto_ahash_tfm(rtfm))) {
2226 if (digestsize == SHA224_DIGEST_SIZE)
2227 memcpy(req_ctx->partial_hash, hmacctx->ipad,
2228 SHA256_DIGEST_SIZE);
2229 else if (digestsize == SHA384_DIGEST_SIZE)
2230 memcpy(req_ctx->partial_hash, hmacctx->ipad,
2231 SHA512_DIGEST_SIZE);
2232 else
2233 memcpy(req_ctx->partial_hash, hmacctx->ipad,
2234 digestsize);
2235 }
2236 return 0;
2237 }
2238
2239 static int chcr_hmac_cra_init(struct crypto_tfm *tfm)
2240 {
2241 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
2242 struct hmac_ctx *hmacctx = HMAC_CTX(ctx);
2243 unsigned int digestsize =
2244 crypto_ahash_digestsize(__crypto_ahash_cast(tfm));
2245
2246 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
2247 sizeof(struct chcr_ahash_req_ctx));
2248 hmacctx->base_hash = chcr_alloc_shash(digestsize);
2249 if (IS_ERR(hmacctx->base_hash))
2250 return PTR_ERR(hmacctx->base_hash);
2251 return chcr_device_init(crypto_tfm_ctx(tfm));
2252 }
2253
2254 static void chcr_hmac_cra_exit(struct crypto_tfm *tfm)
2255 {
2256 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
2257 struct hmac_ctx *hmacctx = HMAC_CTX(ctx);
2258
2259 if (hmacctx->base_hash) {
2260 chcr_free_shash(hmacctx->base_hash);
2261 hmacctx->base_hash = NULL;
2262 }
2263 }
2264
2265 inline void chcr_aead_common_exit(struct aead_request *req)
2266 {
2267 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2268 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2269 struct uld_ctx *u_ctx = ULD_CTX(a_ctx(tfm));
2270
2271 chcr_aead_dma_unmap(&u_ctx->lldi.pdev->dev, req, reqctx->op);
2272 }
2273
2274 static int chcr_aead_common_init(struct aead_request *req)
2275 {
2276 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2277 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2278 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2279 unsigned int authsize = crypto_aead_authsize(tfm);
2280 int error = -EINVAL;
2281
2282 /* validate key size */
2283 if (aeadctx->enckey_len == 0)
2284 goto err;
2285 if (reqctx->op && req->cryptlen < authsize)
2286 goto err;
2287 if (reqctx->b0_len)
2288 reqctx->scratch_pad = reqctx->iv + IV;
2289 else
2290 reqctx->scratch_pad = NULL;
2291
2292 error = chcr_aead_dma_map(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev, req,
2293 reqctx->op);
2294 if (error) {
2295 error = -ENOMEM;
2296 goto err;
2297 }
2298
2299 return 0;
2300 err:
2301 return error;
2302 }
2303
2304 static int chcr_aead_need_fallback(struct aead_request *req, int dst_nents,
2305 int aadmax, int wrlen,
2306 unsigned short op_type)
2307 {
2308 unsigned int authsize = crypto_aead_authsize(crypto_aead_reqtfm(req));
2309
2310 if (((req->cryptlen - (op_type ? authsize : 0)) == 0) ||
2311 dst_nents > MAX_DSGL_ENT ||
2312 (req->assoclen > aadmax) ||
2313 (wrlen > SGE_MAX_WR_LEN))
2314 return 1;
2315 return 0;
2316 }
2317
2318 static int chcr_aead_fallback(struct aead_request *req, unsigned short op_type)
2319 {
2320 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2321 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2322 struct aead_request *subreq = aead_request_ctx(req);
2323
2324 aead_request_set_tfm(subreq, aeadctx->sw_cipher);
2325 aead_request_set_callback(subreq, req->base.flags,
2326 req->base.complete, req->base.data);
2327 aead_request_set_crypt(subreq, req->src, req->dst, req->cryptlen,
2328 req->iv);
2329 aead_request_set_ad(subreq, req->assoclen);
2330 return op_type ? crypto_aead_decrypt(subreq) :
2331 crypto_aead_encrypt(subreq);
2332 }
2333
2334 static struct sk_buff *create_authenc_wr(struct aead_request *req,
2335 unsigned short qid,
2336 int size)
2337 {
2338 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2339 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2340 struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx);
2341 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2342 struct sk_buff *skb = NULL;
2343 struct chcr_wr *chcr_req;
2344 struct cpl_rx_phys_dsgl *phys_cpl;
2345 struct ulptx_sgl *ulptx;
2346 unsigned int transhdr_len;
2347 unsigned int dst_size = 0, temp, subtype = get_aead_subtype(tfm);
2348 unsigned int kctx_len = 0, dnents, snents;
2349 unsigned int authsize = crypto_aead_authsize(tfm);
2350 int error = -EINVAL;
2351 u8 *ivptr;
2352 int null = 0;
2353 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
2354 GFP_ATOMIC;
2355 struct adapter *adap = padap(a_ctx(tfm)->dev);
2356
2357 if (req->cryptlen == 0)
2358 return NULL;
2359
2360 reqctx->b0_len = 0;
2361 error = chcr_aead_common_init(req);
2362 if (error)
2363 return ERR_PTR(error);
2364
2365 if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL ||
2366 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
2367 null = 1;
2368 }
2369 dnents = sg_nents_xlen(req->dst, req->assoclen + req->cryptlen +
2370 (reqctx->op ? -authsize : authsize), CHCR_DST_SG_SIZE, 0);
2371 dnents += MIN_AUTH_SG; // For IV
2372 snents = sg_nents_xlen(req->src, req->assoclen + req->cryptlen,
2373 CHCR_SRC_SG_SIZE, 0);
2374 dst_size = get_space_for_phys_dsgl(dnents);
2375 kctx_len = (ntohl(KEY_CONTEXT_CTX_LEN_V(aeadctx->key_ctx_hdr)) << 4)
2376 - sizeof(chcr_req->key_ctx);
2377 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
2378 reqctx->imm = (transhdr_len + req->assoclen + req->cryptlen) <
2379 SGE_MAX_WR_LEN;
2380 temp = reqctx->imm ? roundup(req->assoclen + req->cryptlen, 16)
2381 : (sgl_len(snents) * 8);
2382 transhdr_len += temp;
2383 transhdr_len = roundup(transhdr_len, 16);
2384
2385 if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE,
2386 transhdr_len, reqctx->op)) {
2387 atomic_inc(&adap->chcr_stats.fallback);
2388 chcr_aead_common_exit(req);
2389 return ERR_PTR(chcr_aead_fallback(req, reqctx->op));
2390 }
2391 skb = alloc_skb(transhdr_len, flags);
2392 if (!skb) {
2393 error = -ENOMEM;
2394 goto err;
2395 }
2396
2397 chcr_req = __skb_put_zero(skb, transhdr_len);
2398
2399 temp = (reqctx->op == CHCR_ENCRYPT_OP) ? 0 : authsize;
2400
2401 /*
2402 * Input order is AAD,IV and Payload. where IV should be included as
2403 * the part of authdata. All other fields should be filled according
2404 * to the hardware spec
2405 */
2406 chcr_req->sec_cpl.op_ivinsrtofst =
2407 FILL_SEC_CPL_OP_IVINSR(a_ctx(tfm)->tx_chan_id, 2, 1);
2408 chcr_req->sec_cpl.pldlen = htonl(req->assoclen + IV + req->cryptlen);
2409 chcr_req->sec_cpl.aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI(
2410 null ? 0 : 1 + IV,
2411 null ? 0 : IV + req->assoclen,
2412 req->assoclen + IV + 1,
2413 (temp & 0x1F0) >> 4);
2414 chcr_req->sec_cpl.cipherstop_lo_authinsert = FILL_SEC_CPL_AUTHINSERT(
2415 temp & 0xF,
2416 null ? 0 : req->assoclen + IV + 1,
2417 temp, temp);
2418 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL ||
2419 subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA)
2420 temp = CHCR_SCMD_CIPHER_MODE_AES_CTR;
2421 else
2422 temp = CHCR_SCMD_CIPHER_MODE_AES_CBC;
2423 chcr_req->sec_cpl.seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(reqctx->op,
2424 (reqctx->op == CHCR_ENCRYPT_OP) ? 1 : 0,
2425 temp,
2426 actx->auth_mode, aeadctx->hmac_ctrl,
2427 IV >> 1);
2428 chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1,
2429 0, 0, dst_size);
2430
2431 chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr;
2432 if (reqctx->op == CHCR_ENCRYPT_OP ||
2433 subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
2434 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL)
2435 memcpy(chcr_req->key_ctx.key, aeadctx->key,
2436 aeadctx->enckey_len);
2437 else
2438 memcpy(chcr_req->key_ctx.key, actx->dec_rrkey,
2439 aeadctx->enckey_len);
2440
2441 memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16),
2442 actx->h_iopad, kctx_len - roundup(aeadctx->enckey_len, 16));
2443 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
2444 ivptr = (u8 *)(phys_cpl + 1) + dst_size;
2445 ulptx = (struct ulptx_sgl *)(ivptr + IV);
2446 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
2447 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
2448 memcpy(ivptr, aeadctx->nonce, CTR_RFC3686_NONCE_SIZE);
2449 memcpy(ivptr + CTR_RFC3686_NONCE_SIZE, req->iv,
2450 CTR_RFC3686_IV_SIZE);
2451 *(__be32 *)(ivptr + CTR_RFC3686_NONCE_SIZE +
2452 CTR_RFC3686_IV_SIZE) = cpu_to_be32(1);
2453 } else {
2454 memcpy(ivptr, req->iv, IV);
2455 }
2456 chcr_add_aead_dst_ent(req, phys_cpl, qid);
2457 chcr_add_aead_src_ent(req, ulptx);
2458 atomic_inc(&adap->chcr_stats.cipher_rqst);
2459 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + IV +
2460 kctx_len + (reqctx->imm ? (req->assoclen + req->cryptlen) : 0);
2461 create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, size,
2462 transhdr_len, temp, 0);
2463 reqctx->skb = skb;
2464
2465 return skb;
2466 err:
2467 chcr_aead_common_exit(req);
2468
2469 return ERR_PTR(error);
2470 }
2471
2472 int chcr_aead_dma_map(struct device *dev,
2473 struct aead_request *req,
2474 unsigned short op_type)
2475 {
2476 int error;
2477 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2478 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2479 unsigned int authsize = crypto_aead_authsize(tfm);
2480 int dst_size;
2481
2482 dst_size = req->assoclen + req->cryptlen + (op_type ?
2483 -authsize : authsize);
2484 if (!req->cryptlen || !dst_size)
2485 return 0;
2486 reqctx->iv_dma = dma_map_single(dev, reqctx->iv, (IV + reqctx->b0_len),
2487 DMA_BIDIRECTIONAL);
2488 if (dma_mapping_error(dev, reqctx->iv_dma))
2489 return -ENOMEM;
2490 if (reqctx->b0_len)
2491 reqctx->b0_dma = reqctx->iv_dma + IV;
2492 else
2493 reqctx->b0_dma = 0;
2494 if (req->src == req->dst) {
2495 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2496 DMA_BIDIRECTIONAL);
2497 if (!error)
2498 goto err;
2499 } else {
2500 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2501 DMA_TO_DEVICE);
2502 if (!error)
2503 goto err;
2504 error = dma_map_sg(dev, req->dst, sg_nents(req->dst),
2505 DMA_FROM_DEVICE);
2506 if (!error) {
2507 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2508 DMA_TO_DEVICE);
2509 goto err;
2510 }
2511 }
2512
2513 return 0;
2514 err:
2515 dma_unmap_single(dev, reqctx->iv_dma, IV, DMA_BIDIRECTIONAL);
2516 return -ENOMEM;
2517 }
2518
2519 void chcr_aead_dma_unmap(struct device *dev,
2520 struct aead_request *req,
2521 unsigned short op_type)
2522 {
2523 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2524 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2525 unsigned int authsize = crypto_aead_authsize(tfm);
2526 int dst_size;
2527
2528 dst_size = req->assoclen + req->cryptlen + (op_type ?
2529 -authsize : authsize);
2530 if (!req->cryptlen || !dst_size)
2531 return;
2532
2533 dma_unmap_single(dev, reqctx->iv_dma, (IV + reqctx->b0_len),
2534 DMA_BIDIRECTIONAL);
2535 if (req->src == req->dst) {
2536 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2537 DMA_BIDIRECTIONAL);
2538 } else {
2539 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2540 DMA_TO_DEVICE);
2541 dma_unmap_sg(dev, req->dst, sg_nents(req->dst),
2542 DMA_FROM_DEVICE);
2543 }
2544 }
2545
2546 void chcr_add_aead_src_ent(struct aead_request *req,
2547 struct ulptx_sgl *ulptx)
2548 {
2549 struct ulptx_walk ulp_walk;
2550 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2551
2552 if (reqctx->imm) {
2553 u8 *buf = (u8 *)ulptx;
2554
2555 if (reqctx->b0_len) {
2556 memcpy(buf, reqctx->scratch_pad, reqctx->b0_len);
2557 buf += reqctx->b0_len;
2558 }
2559 sg_pcopy_to_buffer(req->src, sg_nents(req->src),
2560 buf, req->cryptlen + req->assoclen, 0);
2561 } else {
2562 ulptx_walk_init(&ulp_walk, ulptx);
2563 if (reqctx->b0_len)
2564 ulptx_walk_add_page(&ulp_walk, reqctx->b0_len,
2565 reqctx->b0_dma);
2566 ulptx_walk_add_sg(&ulp_walk, req->src, req->cryptlen +
2567 req->assoclen, 0);
2568 ulptx_walk_end(&ulp_walk);
2569 }
2570 }
2571
2572 void chcr_add_aead_dst_ent(struct aead_request *req,
2573 struct cpl_rx_phys_dsgl *phys_cpl,
2574 unsigned short qid)
2575 {
2576 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2577 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2578 struct dsgl_walk dsgl_walk;
2579 unsigned int authsize = crypto_aead_authsize(tfm);
2580 struct chcr_context *ctx = a_ctx(tfm);
2581 u32 temp;
2582
2583 dsgl_walk_init(&dsgl_walk, phys_cpl);
2584 dsgl_walk_add_page(&dsgl_walk, IV + reqctx->b0_len, reqctx->iv_dma);
2585 temp = req->assoclen + req->cryptlen +
2586 (reqctx->op ? -authsize : authsize);
2587 dsgl_walk_add_sg(&dsgl_walk, req->dst, temp, 0);
2588 dsgl_walk_end(&dsgl_walk, qid, ctx->pci_chan_id);
2589 }
2590
2591 void chcr_add_cipher_src_ent(struct ablkcipher_request *req,
2592 void *ulptx,
2593 struct cipher_wr_param *wrparam)
2594 {
2595 struct ulptx_walk ulp_walk;
2596 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
2597 u8 *buf = ulptx;
2598
2599 memcpy(buf, reqctx->iv, IV);
2600 buf += IV;
2601 if (reqctx->imm) {
2602 sg_pcopy_to_buffer(req->src, sg_nents(req->src),
2603 buf, wrparam->bytes, reqctx->processed);
2604 } else {
2605 ulptx_walk_init(&ulp_walk, (struct ulptx_sgl *)buf);
2606 ulptx_walk_add_sg(&ulp_walk, reqctx->srcsg, wrparam->bytes,
2607 reqctx->src_ofst);
2608 reqctx->srcsg = ulp_walk.last_sg;
2609 reqctx->src_ofst = ulp_walk.last_sg_len;
2610 ulptx_walk_end(&ulp_walk);
2611 }
2612 }
2613
2614 void chcr_add_cipher_dst_ent(struct ablkcipher_request *req,
2615 struct cpl_rx_phys_dsgl *phys_cpl,
2616 struct cipher_wr_param *wrparam,
2617 unsigned short qid)
2618 {
2619 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
2620 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(wrparam->req);
2621 struct chcr_context *ctx = c_ctx(tfm);
2622 struct dsgl_walk dsgl_walk;
2623
2624 dsgl_walk_init(&dsgl_walk, phys_cpl);
2625 dsgl_walk_add_sg(&dsgl_walk, reqctx->dstsg, wrparam->bytes,
2626 reqctx->dst_ofst);
2627 reqctx->dstsg = dsgl_walk.last_sg;
2628 reqctx->dst_ofst = dsgl_walk.last_sg_len;
2629
2630 dsgl_walk_end(&dsgl_walk, qid, ctx->pci_chan_id);
2631 }
2632
2633 void chcr_add_hash_src_ent(struct ahash_request *req,
2634 struct ulptx_sgl *ulptx,
2635 struct hash_wr_param *param)
2636 {
2637 struct ulptx_walk ulp_walk;
2638 struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req);
2639
2640 if (reqctx->hctx_wr.imm) {
2641 u8 *buf = (u8 *)ulptx;
2642
2643 if (param->bfr_len) {
2644 memcpy(buf, reqctx->reqbfr, param->bfr_len);
2645 buf += param->bfr_len;
2646 }
2647
2648 sg_pcopy_to_buffer(reqctx->hctx_wr.srcsg,
2649 sg_nents(reqctx->hctx_wr.srcsg), buf,
2650 param->sg_len, 0);
2651 } else {
2652 ulptx_walk_init(&ulp_walk, ulptx);
2653 if (param->bfr_len)
2654 ulptx_walk_add_page(&ulp_walk, param->bfr_len,
2655 reqctx->hctx_wr.dma_addr);
2656 ulptx_walk_add_sg(&ulp_walk, reqctx->hctx_wr.srcsg,
2657 param->sg_len, reqctx->hctx_wr.src_ofst);
2658 reqctx->hctx_wr.srcsg = ulp_walk.last_sg;
2659 reqctx->hctx_wr.src_ofst = ulp_walk.last_sg_len;
2660 ulptx_walk_end(&ulp_walk);
2661 }
2662 }
2663
2664 int chcr_hash_dma_map(struct device *dev,
2665 struct ahash_request *req)
2666 {
2667 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
2668 int error = 0;
2669
2670 if (!req->nbytes)
2671 return 0;
2672 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2673 DMA_TO_DEVICE);
2674 if (!error)
2675 return -ENOMEM;
2676 req_ctx->hctx_wr.is_sg_map = 1;
2677 return 0;
2678 }
2679
2680 void chcr_hash_dma_unmap(struct device *dev,
2681 struct ahash_request *req)
2682 {
2683 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
2684
2685 if (!req->nbytes)
2686 return;
2687
2688 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2689 DMA_TO_DEVICE);
2690 req_ctx->hctx_wr.is_sg_map = 0;
2691
2692 }
2693
2694 int chcr_cipher_dma_map(struct device *dev,
2695 struct ablkcipher_request *req)
2696 {
2697 int error;
2698
2699 if (req->src == req->dst) {
2700 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2701 DMA_BIDIRECTIONAL);
2702 if (!error)
2703 goto err;
2704 } else {
2705 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2706 DMA_TO_DEVICE);
2707 if (!error)
2708 goto err;
2709 error = dma_map_sg(dev, req->dst, sg_nents(req->dst),
2710 DMA_FROM_DEVICE);
2711 if (!error) {
2712 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2713 DMA_TO_DEVICE);
2714 goto err;
2715 }
2716 }
2717
2718 return 0;
2719 err:
2720 return -ENOMEM;
2721 }
2722
2723 void chcr_cipher_dma_unmap(struct device *dev,
2724 struct ablkcipher_request *req)
2725 {
2726 if (req->src == req->dst) {
2727 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2728 DMA_BIDIRECTIONAL);
2729 } else {
2730 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2731 DMA_TO_DEVICE);
2732 dma_unmap_sg(dev, req->dst, sg_nents(req->dst),
2733 DMA_FROM_DEVICE);
2734 }
2735 }
2736
2737 static int set_msg_len(u8 *block, unsigned int msglen, int csize)
2738 {
2739 __be32 data;
2740
2741 memset(block, 0, csize);
2742 block += csize;
2743
2744 if (csize >= 4)
2745 csize = 4;
2746 else if (msglen > (unsigned int)(1 << (8 * csize)))
2747 return -EOVERFLOW;
2748
2749 data = cpu_to_be32(msglen);
2750 memcpy(block - csize, (u8 *)&data + 4 - csize, csize);
2751
2752 return 0;
2753 }
2754
2755 static int generate_b0(struct aead_request *req, u8 *ivptr,
2756 unsigned short op_type)
2757 {
2758 unsigned int l, lp, m;
2759 int rc;
2760 struct crypto_aead *aead = crypto_aead_reqtfm(req);
2761 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2762 u8 *b0 = reqctx->scratch_pad;
2763
2764 m = crypto_aead_authsize(aead);
2765
2766 memcpy(b0, ivptr, 16);
2767
2768 lp = b0[0];
2769 l = lp + 1;
2770
2771 /* set m, bits 3-5 */
2772 *b0 |= (8 * ((m - 2) / 2));
2773
2774 /* set adata, bit 6, if associated data is used */
2775 if (req->assoclen)
2776 *b0 |= 64;
2777 rc = set_msg_len(b0 + 16 - l,
2778 (op_type == CHCR_DECRYPT_OP) ?
2779 req->cryptlen - m : req->cryptlen, l);
2780
2781 return rc;
2782 }
2783
2784 static inline int crypto_ccm_check_iv(const u8 *iv)
2785 {
2786 /* 2 <= L <= 8, so 1 <= L' <= 7. */
2787 if (iv[0] < 1 || iv[0] > 7)
2788 return -EINVAL;
2789
2790 return 0;
2791 }
2792
2793 static int ccm_format_packet(struct aead_request *req,
2794 u8 *ivptr,
2795 unsigned int sub_type,
2796 unsigned short op_type,
2797 unsigned int assoclen)
2798 {
2799 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2800 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2801 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2802 int rc = 0;
2803
2804 if (sub_type == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) {
2805 ivptr[0] = 3;
2806 memcpy(ivptr + 1, &aeadctx->salt[0], 3);
2807 memcpy(ivptr + 4, req->iv, 8);
2808 memset(ivptr + 12, 0, 4);
2809 } else {
2810 memcpy(ivptr, req->iv, 16);
2811 }
2812 if (assoclen)
2813 *((unsigned short *)(reqctx->scratch_pad + 16)) =
2814 htons(assoclen);
2815
2816 rc = generate_b0(req, ivptr, op_type);
2817 /* zero the ctr value */
2818 memset(ivptr + 15 - ivptr[0], 0, ivptr[0] + 1);
2819 return rc;
2820 }
2821
2822 static void fill_sec_cpl_for_aead(struct cpl_tx_sec_pdu *sec_cpl,
2823 unsigned int dst_size,
2824 struct aead_request *req,
2825 unsigned short op_type)
2826 {
2827 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2828 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2829 unsigned int cipher_mode = CHCR_SCMD_CIPHER_MODE_AES_CCM;
2830 unsigned int mac_mode = CHCR_SCMD_AUTH_MODE_CBCMAC;
2831 unsigned int c_id = a_ctx(tfm)->tx_chan_id;
2832 unsigned int ccm_xtra;
2833 unsigned char tag_offset = 0, auth_offset = 0;
2834 unsigned int assoclen;
2835
2836 if (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309)
2837 assoclen = req->assoclen - 8;
2838 else
2839 assoclen = req->assoclen;
2840 ccm_xtra = CCM_B0_SIZE +
2841 ((assoclen) ? CCM_AAD_FIELD_SIZE : 0);
2842
2843 auth_offset = req->cryptlen ?
2844 (req->assoclen + IV + 1 + ccm_xtra) : 0;
2845 if (op_type == CHCR_DECRYPT_OP) {
2846 if (crypto_aead_authsize(tfm) != req->cryptlen)
2847 tag_offset = crypto_aead_authsize(tfm);
2848 else
2849 auth_offset = 0;
2850 }
2851
2852
2853 sec_cpl->op_ivinsrtofst = FILL_SEC_CPL_OP_IVINSR(c_id,
2854 2, 1);
2855 sec_cpl->pldlen =
2856 htonl(req->assoclen + IV + req->cryptlen + ccm_xtra);
2857 /* For CCM there wil be b0 always. So AAD start will be 1 always */
2858 sec_cpl->aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI(
2859 1 + IV, IV + assoclen + ccm_xtra,
2860 req->assoclen + IV + 1 + ccm_xtra, 0);
2861
2862 sec_cpl->cipherstop_lo_authinsert = FILL_SEC_CPL_AUTHINSERT(0,
2863 auth_offset, tag_offset,
2864 (op_type == CHCR_ENCRYPT_OP) ? 0 :
2865 crypto_aead_authsize(tfm));
2866 sec_cpl->seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(op_type,
2867 (op_type == CHCR_ENCRYPT_OP) ? 0 : 1,
2868 cipher_mode, mac_mode,
2869 aeadctx->hmac_ctrl, IV >> 1);
2870
2871 sec_cpl->ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1, 0,
2872 0, dst_size);
2873 }
2874
2875 static int aead_ccm_validate_input(unsigned short op_type,
2876 struct aead_request *req,
2877 struct chcr_aead_ctx *aeadctx,
2878 unsigned int sub_type)
2879 {
2880 if (sub_type != CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) {
2881 if (crypto_ccm_check_iv(req->iv)) {
2882 pr_err("CCM: IV check fails\n");
2883 return -EINVAL;
2884 }
2885 } else {
2886 if (req->assoclen != 16 && req->assoclen != 20) {
2887 pr_err("RFC4309: Invalid AAD length %d\n",
2888 req->assoclen);
2889 return -EINVAL;
2890 }
2891 }
2892 return 0;
2893 }
2894
2895 static struct sk_buff *create_aead_ccm_wr(struct aead_request *req,
2896 unsigned short qid,
2897 int size)
2898 {
2899 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2900 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2901 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2902 struct sk_buff *skb = NULL;
2903 struct chcr_wr *chcr_req;
2904 struct cpl_rx_phys_dsgl *phys_cpl;
2905 struct ulptx_sgl *ulptx;
2906 unsigned int transhdr_len;
2907 unsigned int dst_size = 0, kctx_len, dnents, temp, snents;
2908 unsigned int sub_type, assoclen = req->assoclen;
2909 unsigned int authsize = crypto_aead_authsize(tfm);
2910 int error = -EINVAL;
2911 u8 *ivptr;
2912 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
2913 GFP_ATOMIC;
2914 struct adapter *adap = padap(a_ctx(tfm)->dev);
2915
2916 sub_type = get_aead_subtype(tfm);
2917 if (sub_type == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309)
2918 assoclen -= 8;
2919 reqctx->b0_len = CCM_B0_SIZE + (assoclen ? CCM_AAD_FIELD_SIZE : 0);
2920 error = chcr_aead_common_init(req);
2921 if (error)
2922 return ERR_PTR(error);
2923
2924 error = aead_ccm_validate_input(reqctx->op, req, aeadctx, sub_type);
2925 if (error)
2926 goto err;
2927 dnents = sg_nents_xlen(req->dst, req->assoclen + req->cryptlen
2928 + (reqctx->op ? -authsize : authsize),
2929 CHCR_DST_SG_SIZE, 0);
2930 dnents += MIN_CCM_SG; // For IV and B0
2931 dst_size = get_space_for_phys_dsgl(dnents);
2932 snents = sg_nents_xlen(req->src, req->assoclen + req->cryptlen,
2933 CHCR_SRC_SG_SIZE, 0);
2934 snents += MIN_CCM_SG; //For B0
2935 kctx_len = roundup(aeadctx->enckey_len, 16) * 2;
2936 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
2937 reqctx->imm = (transhdr_len + req->assoclen + req->cryptlen +
2938 reqctx->b0_len) <= SGE_MAX_WR_LEN;
2939 temp = reqctx->imm ? roundup(req->assoclen + req->cryptlen +
2940 reqctx->b0_len, 16) :
2941 (sgl_len(snents) * 8);
2942 transhdr_len += temp;
2943 transhdr_len = roundup(transhdr_len, 16);
2944
2945 if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE -
2946 reqctx->b0_len, transhdr_len, reqctx->op)) {
2947 atomic_inc(&adap->chcr_stats.fallback);
2948 chcr_aead_common_exit(req);
2949 return ERR_PTR(chcr_aead_fallback(req, reqctx->op));
2950 }
2951 skb = alloc_skb(transhdr_len, flags);
2952
2953 if (!skb) {
2954 error = -ENOMEM;
2955 goto err;
2956 }
2957
2958 chcr_req = __skb_put_zero(skb, transhdr_len);
2959
2960 fill_sec_cpl_for_aead(&chcr_req->sec_cpl, dst_size, req, reqctx->op);
2961
2962 chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr;
2963 memcpy(chcr_req->key_ctx.key, aeadctx->key, aeadctx->enckey_len);
2964 memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16),
2965 aeadctx->key, aeadctx->enckey_len);
2966
2967 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
2968 ivptr = (u8 *)(phys_cpl + 1) + dst_size;
2969 ulptx = (struct ulptx_sgl *)(ivptr + IV);
2970 error = ccm_format_packet(req, ivptr, sub_type, reqctx->op, assoclen);
2971 if (error)
2972 goto dstmap_fail;
2973 chcr_add_aead_dst_ent(req, phys_cpl, qid);
2974 chcr_add_aead_src_ent(req, ulptx);
2975
2976 atomic_inc(&adap->chcr_stats.aead_rqst);
2977 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + IV +
2978 kctx_len + (reqctx->imm ? (req->assoclen + req->cryptlen +
2979 reqctx->b0_len) : 0);
2980 create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, 0,
2981 transhdr_len, temp, 0);
2982 reqctx->skb = skb;
2983
2984 return skb;
2985 dstmap_fail:
2986 kfree_skb(skb);
2987 err:
2988 chcr_aead_common_exit(req);
2989 return ERR_PTR(error);
2990 }
2991
2992 static struct sk_buff *create_gcm_wr(struct aead_request *req,
2993 unsigned short qid,
2994 int size)
2995 {
2996 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2997 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2998 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2999 struct sk_buff *skb = NULL;
3000 struct chcr_wr *chcr_req;
3001 struct cpl_rx_phys_dsgl *phys_cpl;
3002 struct ulptx_sgl *ulptx;
3003 unsigned int transhdr_len, dnents = 0, snents;
3004 unsigned int dst_size = 0, temp = 0, kctx_len, assoclen = req->assoclen;
3005 unsigned int authsize = crypto_aead_authsize(tfm);
3006 int error = -EINVAL;
3007 u8 *ivptr;
3008 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
3009 GFP_ATOMIC;
3010 struct adapter *adap = padap(a_ctx(tfm)->dev);
3011
3012 if (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106)
3013 assoclen = req->assoclen - 8;
3014
3015 reqctx->b0_len = 0;
3016 error = chcr_aead_common_init(req);
3017 if (error)
3018 return ERR_PTR(error);
3019 dnents = sg_nents_xlen(req->dst, req->assoclen + req->cryptlen +
3020 (reqctx->op ? -authsize : authsize),
3021 CHCR_DST_SG_SIZE, 0);
3022 snents = sg_nents_xlen(req->src, req->assoclen + req->cryptlen,
3023 CHCR_SRC_SG_SIZE, 0);
3024 dnents += MIN_GCM_SG; // For IV
3025 dst_size = get_space_for_phys_dsgl(dnents);
3026 kctx_len = roundup(aeadctx->enckey_len, 16) + AEAD_H_SIZE;
3027 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
3028 reqctx->imm = (transhdr_len + req->assoclen + req->cryptlen) <=
3029 SGE_MAX_WR_LEN;
3030 temp = reqctx->imm ? roundup(req->assoclen + req->cryptlen, 16) :
3031 (sgl_len(snents) * 8);
3032 transhdr_len += temp;
3033 transhdr_len = roundup(transhdr_len, 16);
3034 if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE,
3035 transhdr_len, reqctx->op)) {
3036
3037 atomic_inc(&adap->chcr_stats.fallback);
3038 chcr_aead_common_exit(req);
3039 return ERR_PTR(chcr_aead_fallback(req, reqctx->op));
3040 }
3041 skb = alloc_skb(transhdr_len, flags);
3042 if (!skb) {
3043 error = -ENOMEM;
3044 goto err;
3045 }
3046
3047 chcr_req = __skb_put_zero(skb, transhdr_len);
3048
3049 //Offset of tag from end
3050 temp = (reqctx->op == CHCR_ENCRYPT_OP) ? 0 : authsize;
3051 chcr_req->sec_cpl.op_ivinsrtofst = FILL_SEC_CPL_OP_IVINSR(
3052 a_ctx(tfm)->tx_chan_id, 2, 1);
3053 chcr_req->sec_cpl.pldlen =
3054 htonl(req->assoclen + IV + req->cryptlen);
3055 chcr_req->sec_cpl.aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI(
3056 assoclen ? 1 + IV : 0,
3057 assoclen ? IV + assoclen : 0,
3058 req->assoclen + IV + 1, 0);
3059 chcr_req->sec_cpl.cipherstop_lo_authinsert =
3060 FILL_SEC_CPL_AUTHINSERT(0, req->assoclen + IV + 1,
3061 temp, temp);
3062 chcr_req->sec_cpl.seqno_numivs =
3063 FILL_SEC_CPL_SCMD0_SEQNO(reqctx->op, (reqctx->op ==
3064 CHCR_ENCRYPT_OP) ? 1 : 0,
3065 CHCR_SCMD_CIPHER_MODE_AES_GCM,
3066 CHCR_SCMD_AUTH_MODE_GHASH,
3067 aeadctx->hmac_ctrl, IV >> 1);
3068 chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1,
3069 0, 0, dst_size);
3070 chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr;
3071 memcpy(chcr_req->key_ctx.key, aeadctx->key, aeadctx->enckey_len);
3072 memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16),
3073 GCM_CTX(aeadctx)->ghash_h, AEAD_H_SIZE);
3074
3075 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
3076 ivptr = (u8 *)(phys_cpl + 1) + dst_size;
3077 /* prepare a 16 byte iv */
3078 /* S A L T | IV | 0x00000001 */
3079 if (get_aead_subtype(tfm) ==
3080 CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106) {
3081 memcpy(ivptr, aeadctx->salt, 4);
3082 memcpy(ivptr + 4, req->iv, GCM_RFC4106_IV_SIZE);
3083 } else {
3084 memcpy(ivptr, req->iv, GCM_AES_IV_SIZE);
3085 }
3086 *((unsigned int *)(ivptr + 12)) = htonl(0x01);
3087
3088 ulptx = (struct ulptx_sgl *)(ivptr + 16);
3089
3090 chcr_add_aead_dst_ent(req, phys_cpl, qid);
3091 chcr_add_aead_src_ent(req, ulptx);
3092 atomic_inc(&adap->chcr_stats.aead_rqst);
3093 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + IV +
3094 kctx_len + (reqctx->imm ? (req->assoclen + req->cryptlen) : 0);
3095 create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, size,
3096 transhdr_len, temp, reqctx->verify);
3097 reqctx->skb = skb;
3098 return skb;
3099
3100 err:
3101 chcr_aead_common_exit(req);
3102 return ERR_PTR(error);
3103 }
3104
3105
3106
3107 static int chcr_aead_cra_init(struct crypto_aead *tfm)
3108 {
3109 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3110 struct aead_alg *alg = crypto_aead_alg(tfm);
3111
3112 aeadctx->sw_cipher = crypto_alloc_aead(alg->base.cra_name, 0,
3113 CRYPTO_ALG_NEED_FALLBACK |
3114 CRYPTO_ALG_ASYNC);
3115 if (IS_ERR(aeadctx->sw_cipher))
3116 return PTR_ERR(aeadctx->sw_cipher);
3117 crypto_aead_set_reqsize(tfm, max(sizeof(struct chcr_aead_reqctx),
3118 sizeof(struct aead_request) +
3119 crypto_aead_reqsize(aeadctx->sw_cipher)));
3120 return chcr_device_init(a_ctx(tfm));
3121 }
3122
3123 static void chcr_aead_cra_exit(struct crypto_aead *tfm)
3124 {
3125 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3126
3127 crypto_free_aead(aeadctx->sw_cipher);
3128 }
3129
3130 static int chcr_authenc_null_setauthsize(struct crypto_aead *tfm,
3131 unsigned int authsize)
3132 {
3133 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3134
3135 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NOP;
3136 aeadctx->mayverify = VERIFY_HW;
3137 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
3138 }
3139 static int chcr_authenc_setauthsize(struct crypto_aead *tfm,
3140 unsigned int authsize)
3141 {
3142 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3143 u32 maxauth = crypto_aead_maxauthsize(tfm);
3144
3145 /*SHA1 authsize in ipsec is 12 instead of 10 i.e maxauthsize / 2 is not
3146 * true for sha1. authsize == 12 condition should be before
3147 * authsize == (maxauth >> 1)
3148 */
3149 if (authsize == ICV_4) {
3150 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1;
3151 aeadctx->mayverify = VERIFY_HW;
3152 } else if (authsize == ICV_6) {
3153 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL2;
3154 aeadctx->mayverify = VERIFY_HW;
3155 } else if (authsize == ICV_10) {
3156 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_TRUNC_RFC4366;
3157 aeadctx->mayverify = VERIFY_HW;
3158 } else if (authsize == ICV_12) {
3159 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
3160 aeadctx->mayverify = VERIFY_HW;
3161 } else if (authsize == ICV_14) {
3162 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3;
3163 aeadctx->mayverify = VERIFY_HW;
3164 } else if (authsize == (maxauth >> 1)) {
3165 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
3166 aeadctx->mayverify = VERIFY_HW;
3167 } else if (authsize == maxauth) {
3168 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3169 aeadctx->mayverify = VERIFY_HW;
3170 } else {
3171 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3172 aeadctx->mayverify = VERIFY_SW;
3173 }
3174 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
3175 }
3176
3177
3178 static int chcr_gcm_setauthsize(struct crypto_aead *tfm, unsigned int authsize)
3179 {
3180 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3181
3182 switch (authsize) {
3183 case ICV_4:
3184 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1;
3185 aeadctx->mayverify = VERIFY_HW;
3186 break;
3187 case ICV_8:
3188 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
3189 aeadctx->mayverify = VERIFY_HW;
3190 break;
3191 case ICV_12:
3192 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
3193 aeadctx->mayverify = VERIFY_HW;
3194 break;
3195 case ICV_14:
3196 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3;
3197 aeadctx->mayverify = VERIFY_HW;
3198 break;
3199 case ICV_16:
3200 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3201 aeadctx->mayverify = VERIFY_HW;
3202 break;
3203 case ICV_13:
3204 case ICV_15:
3205 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3206 aeadctx->mayverify = VERIFY_SW;
3207 break;
3208 default:
3209
3210 crypto_tfm_set_flags((struct crypto_tfm *) tfm,
3211 CRYPTO_TFM_RES_BAD_KEY_LEN);
3212 return -EINVAL;
3213 }
3214 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
3215 }
3216
3217 static int chcr_4106_4309_setauthsize(struct crypto_aead *tfm,
3218 unsigned int authsize)
3219 {
3220 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3221
3222 switch (authsize) {
3223 case ICV_8:
3224 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
3225 aeadctx->mayverify = VERIFY_HW;
3226 break;
3227 case ICV_12:
3228 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
3229 aeadctx->mayverify = VERIFY_HW;
3230 break;
3231 case ICV_16:
3232 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3233 aeadctx->mayverify = VERIFY_HW;
3234 break;
3235 default:
3236 crypto_tfm_set_flags((struct crypto_tfm *)tfm,
3237 CRYPTO_TFM_RES_BAD_KEY_LEN);
3238 return -EINVAL;
3239 }
3240 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
3241 }
3242
3243 static int chcr_ccm_setauthsize(struct crypto_aead *tfm,
3244 unsigned int authsize)
3245 {
3246 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3247
3248 switch (authsize) {
3249 case ICV_4:
3250 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1;
3251 aeadctx->mayverify = VERIFY_HW;
3252 break;
3253 case ICV_6:
3254 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL2;
3255 aeadctx->mayverify = VERIFY_HW;
3256 break;
3257 case ICV_8:
3258 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
3259 aeadctx->mayverify = VERIFY_HW;
3260 break;
3261 case ICV_10:
3262 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_TRUNC_RFC4366;
3263 aeadctx->mayverify = VERIFY_HW;
3264 break;
3265 case ICV_12:
3266 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
3267 aeadctx->mayverify = VERIFY_HW;
3268 break;
3269 case ICV_14:
3270 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3;
3271 aeadctx->mayverify = VERIFY_HW;
3272 break;
3273 case ICV_16:
3274 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3275 aeadctx->mayverify = VERIFY_HW;
3276 break;
3277 default:
3278 crypto_tfm_set_flags((struct crypto_tfm *)tfm,
3279 CRYPTO_TFM_RES_BAD_KEY_LEN);
3280 return -EINVAL;
3281 }
3282 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
3283 }
3284
3285 static int chcr_ccm_common_setkey(struct crypto_aead *aead,
3286 const u8 *key,
3287 unsigned int keylen)
3288 {
3289 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead));
3290 unsigned char ck_size, mk_size;
3291 int key_ctx_size = 0;
3292
3293 key_ctx_size = sizeof(struct _key_ctx) + roundup(keylen, 16) * 2;
3294 if (keylen == AES_KEYSIZE_128) {
3295 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
3296 mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_128;
3297 } else if (keylen == AES_KEYSIZE_192) {
3298 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
3299 mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_192;
3300 } else if (keylen == AES_KEYSIZE_256) {
3301 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
3302 mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256;
3303 } else {
3304 crypto_tfm_set_flags((struct crypto_tfm *)aead,
3305 CRYPTO_TFM_RES_BAD_KEY_LEN);
3306 aeadctx->enckey_len = 0;
3307 return -EINVAL;
3308 }
3309 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, mk_size, 0, 0,
3310 key_ctx_size >> 4);
3311 memcpy(aeadctx->key, key, keylen);
3312 aeadctx->enckey_len = keylen;
3313
3314 return 0;
3315 }
3316
3317 static int chcr_aead_ccm_setkey(struct crypto_aead *aead,
3318 const u8 *key,
3319 unsigned int keylen)
3320 {
3321 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead));
3322 int error;
3323
3324 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3325 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead) &
3326 CRYPTO_TFM_REQ_MASK);
3327 error = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3328 crypto_aead_clear_flags(aead, CRYPTO_TFM_RES_MASK);
3329 crypto_aead_set_flags(aead, crypto_aead_get_flags(aeadctx->sw_cipher) &
3330 CRYPTO_TFM_RES_MASK);
3331 if (error)
3332 return error;
3333 return chcr_ccm_common_setkey(aead, key, keylen);
3334 }
3335
3336 static int chcr_aead_rfc4309_setkey(struct crypto_aead *aead, const u8 *key,
3337 unsigned int keylen)
3338 {
3339 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead));
3340 int error;
3341
3342 if (keylen < 3) {
3343 crypto_tfm_set_flags((struct crypto_tfm *)aead,
3344 CRYPTO_TFM_RES_BAD_KEY_LEN);
3345 aeadctx->enckey_len = 0;
3346 return -EINVAL;
3347 }
3348 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3349 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead) &
3350 CRYPTO_TFM_REQ_MASK);
3351 error = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3352 crypto_aead_clear_flags(aead, CRYPTO_TFM_RES_MASK);
3353 crypto_aead_set_flags(aead, crypto_aead_get_flags(aeadctx->sw_cipher) &
3354 CRYPTO_TFM_RES_MASK);
3355 if (error)
3356 return error;
3357 keylen -= 3;
3358 memcpy(aeadctx->salt, key + keylen, 3);
3359 return chcr_ccm_common_setkey(aead, key, keylen);
3360 }
3361
3362 static int chcr_gcm_setkey(struct crypto_aead *aead, const u8 *key,
3363 unsigned int keylen)
3364 {
3365 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead));
3366 struct chcr_gcm_ctx *gctx = GCM_CTX(aeadctx);
3367 struct crypto_cipher *cipher;
3368 unsigned int ck_size;
3369 int ret = 0, key_ctx_size = 0;
3370
3371 aeadctx->enckey_len = 0;
3372 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3373 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead)
3374 & CRYPTO_TFM_REQ_MASK);
3375 ret = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3376 crypto_aead_clear_flags(aead, CRYPTO_TFM_RES_MASK);
3377 crypto_aead_set_flags(aead, crypto_aead_get_flags(aeadctx->sw_cipher) &
3378 CRYPTO_TFM_RES_MASK);
3379 if (ret)
3380 goto out;
3381
3382 if (get_aead_subtype(aead) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106 &&
3383 keylen > 3) {
3384 keylen -= 4; /* nonce/salt is present in the last 4 bytes */
3385 memcpy(aeadctx->salt, key + keylen, 4);
3386 }
3387 if (keylen == AES_KEYSIZE_128) {
3388 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
3389 } else if (keylen == AES_KEYSIZE_192) {
3390 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
3391 } else if (keylen == AES_KEYSIZE_256) {
3392 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
3393 } else {
3394 crypto_tfm_set_flags((struct crypto_tfm *)aead,
3395 CRYPTO_TFM_RES_BAD_KEY_LEN);
3396 pr_err("GCM: Invalid key length %d\n", keylen);
3397 ret = -EINVAL;
3398 goto out;
3399 }
3400
3401 memcpy(aeadctx->key, key, keylen);
3402 aeadctx->enckey_len = keylen;
3403 key_ctx_size = sizeof(struct _key_ctx) + roundup(keylen, 16) +
3404 AEAD_H_SIZE;
3405 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size,
3406 CHCR_KEYCTX_MAC_KEY_SIZE_128,
3407 0, 0,
3408 key_ctx_size >> 4);
3409 /* Calculate the H = CIPH(K, 0 repeated 16 times).
3410 * It will go in key context
3411 */
3412 cipher = crypto_alloc_cipher("aes-generic", 0, 0);
3413 if (IS_ERR(cipher)) {
3414 aeadctx->enckey_len = 0;
3415 ret = -ENOMEM;
3416 goto out;
3417 }
3418
3419 ret = crypto_cipher_setkey(cipher, key, keylen);
3420 if (ret) {
3421 aeadctx->enckey_len = 0;
3422 goto out1;
3423 }
3424 memset(gctx->ghash_h, 0, AEAD_H_SIZE);
3425 crypto_cipher_encrypt_one(cipher, gctx->ghash_h, gctx->ghash_h);
3426
3427 out1:
3428 crypto_free_cipher(cipher);
3429 out:
3430 return ret;
3431 }
3432
3433 static int chcr_authenc_setkey(struct crypto_aead *authenc, const u8 *key,
3434 unsigned int keylen)
3435 {
3436 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(authenc));
3437 struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx);
3438 /* it contains auth and cipher key both*/
3439 struct crypto_authenc_keys keys;
3440 unsigned int bs, subtype;
3441 unsigned int max_authsize = crypto_aead_alg(authenc)->maxauthsize;
3442 int err = 0, i, key_ctx_len = 0;
3443 unsigned char ck_size = 0;
3444 unsigned char pad[CHCR_HASH_MAX_BLOCK_SIZE_128] = { 0 };
3445 struct crypto_shash *base_hash = ERR_PTR(-EINVAL);
3446 struct algo_param param;
3447 int align;
3448 u8 *o_ptr = NULL;
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(authenc)
3452 & CRYPTO_TFM_REQ_MASK);
3453 err = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3454 crypto_aead_clear_flags(authenc, CRYPTO_TFM_RES_MASK);
3455 crypto_aead_set_flags(authenc, crypto_aead_get_flags(aeadctx->sw_cipher)
3456 & CRYPTO_TFM_RES_MASK);
3457 if (err)
3458 goto out;
3459
3460 if (crypto_authenc_extractkeys(&keys, key, keylen) != 0) {
3461 crypto_aead_set_flags(authenc, CRYPTO_TFM_RES_BAD_KEY_LEN);
3462 goto out;
3463 }
3464
3465 if (get_alg_config(&param, max_authsize)) {
3466 pr_err("chcr : Unsupported digest size\n");
3467 goto out;
3468 }
3469 subtype = get_aead_subtype(authenc);
3470 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
3471 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
3472 if (keys.enckeylen < CTR_RFC3686_NONCE_SIZE)
3473 goto out;
3474 memcpy(aeadctx->nonce, keys.enckey + (keys.enckeylen
3475 - CTR_RFC3686_NONCE_SIZE), CTR_RFC3686_NONCE_SIZE);
3476 keys.enckeylen -= CTR_RFC3686_NONCE_SIZE;
3477 }
3478 if (keys.enckeylen == AES_KEYSIZE_128) {
3479 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
3480 } else if (keys.enckeylen == AES_KEYSIZE_192) {
3481 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
3482 } else if (keys.enckeylen == AES_KEYSIZE_256) {
3483 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
3484 } else {
3485 pr_err("chcr : Unsupported cipher key\n");
3486 goto out;
3487 }
3488
3489 /* Copy only encryption key. We use authkey to generate h(ipad) and
3490 * h(opad) so authkey is not needed again. authkeylen size have the
3491 * size of the hash digest size.
3492 */
3493 memcpy(aeadctx->key, keys.enckey, keys.enckeylen);
3494 aeadctx->enckey_len = keys.enckeylen;
3495 if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_SHA ||
3496 subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL) {
3497
3498 get_aes_decrypt_key(actx->dec_rrkey, aeadctx->key,
3499 aeadctx->enckey_len << 3);
3500 }
3501 base_hash = chcr_alloc_shash(max_authsize);
3502 if (IS_ERR(base_hash)) {
3503 pr_err("chcr : Base driver cannot be loaded\n");
3504 aeadctx->enckey_len = 0;
3505 memzero_explicit(&keys, sizeof(keys));
3506 return -EINVAL;
3507 }
3508 {
3509 SHASH_DESC_ON_STACK(shash, base_hash);
3510
3511 shash->tfm = base_hash;
3512 bs = crypto_shash_blocksize(base_hash);
3513 align = KEYCTX_ALIGN_PAD(max_authsize);
3514 o_ptr = actx->h_iopad + param.result_size + align;
3515
3516 if (keys.authkeylen > bs) {
3517 err = crypto_shash_digest(shash, keys.authkey,
3518 keys.authkeylen,
3519 o_ptr);
3520 if (err) {
3521 pr_err("chcr : Base driver cannot be loaded\n");
3522 goto out;
3523 }
3524 keys.authkeylen = max_authsize;
3525 } else
3526 memcpy(o_ptr, keys.authkey, keys.authkeylen);
3527
3528 /* Compute the ipad-digest*/
3529 memset(pad + keys.authkeylen, 0, bs - keys.authkeylen);
3530 memcpy(pad, o_ptr, keys.authkeylen);
3531 for (i = 0; i < bs >> 2; i++)
3532 *((unsigned int *)pad + i) ^= IPAD_DATA;
3533
3534 if (chcr_compute_partial_hash(shash, pad, actx->h_iopad,
3535 max_authsize))
3536 goto out;
3537 /* Compute the opad-digest */
3538 memset(pad + keys.authkeylen, 0, bs - keys.authkeylen);
3539 memcpy(pad, o_ptr, keys.authkeylen);
3540 for (i = 0; i < bs >> 2; i++)
3541 *((unsigned int *)pad + i) ^= OPAD_DATA;
3542
3543 if (chcr_compute_partial_hash(shash, pad, o_ptr, max_authsize))
3544 goto out;
3545
3546 /* convert the ipad and opad digest to network order */
3547 chcr_change_order(actx->h_iopad, param.result_size);
3548 chcr_change_order(o_ptr, param.result_size);
3549 key_ctx_len = sizeof(struct _key_ctx) +
3550 roundup(keys.enckeylen, 16) +
3551 (param.result_size + align) * 2;
3552 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, param.mk_size,
3553 0, 1, key_ctx_len >> 4);
3554 actx->auth_mode = param.auth_mode;
3555 chcr_free_shash(base_hash);
3556
3557 memzero_explicit(&keys, sizeof(keys));
3558 return 0;
3559 }
3560 out:
3561 aeadctx->enckey_len = 0;
3562 memzero_explicit(&keys, sizeof(keys));
3563 if (!IS_ERR(base_hash))
3564 chcr_free_shash(base_hash);
3565 return -EINVAL;
3566 }
3567
3568 static int chcr_aead_digest_null_setkey(struct crypto_aead *authenc,
3569 const u8 *key, unsigned int keylen)
3570 {
3571 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(authenc));
3572 struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx);
3573 struct crypto_authenc_keys keys;
3574 int err;
3575 /* it contains auth and cipher key both*/
3576 unsigned int subtype;
3577 int key_ctx_len = 0;
3578 unsigned char ck_size = 0;
3579
3580 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3581 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(authenc)
3582 & CRYPTO_TFM_REQ_MASK);
3583 err = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3584 crypto_aead_clear_flags(authenc, CRYPTO_TFM_RES_MASK);
3585 crypto_aead_set_flags(authenc, crypto_aead_get_flags(aeadctx->sw_cipher)
3586 & CRYPTO_TFM_RES_MASK);
3587 if (err)
3588 goto out;
3589
3590 if (crypto_authenc_extractkeys(&keys, key, keylen) != 0) {
3591 crypto_aead_set_flags(authenc, CRYPTO_TFM_RES_BAD_KEY_LEN);
3592 goto out;
3593 }
3594 subtype = get_aead_subtype(authenc);
3595 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
3596 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
3597 if (keys.enckeylen < CTR_RFC3686_NONCE_SIZE)
3598 goto out;
3599 memcpy(aeadctx->nonce, keys.enckey + (keys.enckeylen
3600 - CTR_RFC3686_NONCE_SIZE), CTR_RFC3686_NONCE_SIZE);
3601 keys.enckeylen -= CTR_RFC3686_NONCE_SIZE;
3602 }
3603 if (keys.enckeylen == AES_KEYSIZE_128) {
3604 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
3605 } else if (keys.enckeylen == AES_KEYSIZE_192) {
3606 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
3607 } else if (keys.enckeylen == AES_KEYSIZE_256) {
3608 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
3609 } else {
3610 pr_err("chcr : Unsupported cipher key %d\n", keys.enckeylen);
3611 goto out;
3612 }
3613 memcpy(aeadctx->key, keys.enckey, keys.enckeylen);
3614 aeadctx->enckey_len = keys.enckeylen;
3615 if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_SHA ||
3616 subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL) {
3617 get_aes_decrypt_key(actx->dec_rrkey, aeadctx->key,
3618 aeadctx->enckey_len << 3);
3619 }
3620 key_ctx_len = sizeof(struct _key_ctx) + roundup(keys.enckeylen, 16);
3621
3622 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY, 0,
3623 0, key_ctx_len >> 4);
3624 actx->auth_mode = CHCR_SCMD_AUTH_MODE_NOP;
3625 memzero_explicit(&keys, sizeof(keys));
3626 return 0;
3627 out:
3628 aeadctx->enckey_len = 0;
3629 memzero_explicit(&keys, sizeof(keys));
3630 return -EINVAL;
3631 }
3632
3633 static int chcr_aead_op(struct aead_request *req,
3634 int size,
3635 create_wr_t create_wr_fn)
3636 {
3637 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
3638 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
3639 struct uld_ctx *u_ctx;
3640 struct sk_buff *skb;
3641 int isfull = 0;
3642 struct chcr_dev *cdev;
3643
3644 cdev = a_ctx(tfm)->dev;
3645 if (!cdev) {
3646 pr_err("chcr : %s : No crypto device.\n", __func__);
3647 return -ENXIO;
3648 }
3649
3650 if (chcr_inc_wrcount(cdev)) {
3651 /* Detach state for CHCR means lldi or padap is freed.
3652 * We cannot increment fallback here.
3653 */
3654 return chcr_aead_fallback(req, reqctx->op);
3655 }
3656
3657 u_ctx = ULD_CTX(a_ctx(tfm));
3658 if (cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
3659 a_ctx(tfm)->tx_qidx)) {
3660 isfull = 1;
3661 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) {
3662 chcr_dec_wrcount(cdev);
3663 return -ENOSPC;
3664 }
3665 }
3666
3667 /* Form a WR from req */
3668 skb = create_wr_fn(req, u_ctx->lldi.rxq_ids[a_ctx(tfm)->rx_qidx], size);
3669
3670 if (IS_ERR_OR_NULL(skb)) {
3671 chcr_dec_wrcount(cdev);
3672 return PTR_ERR_OR_ZERO(skb);
3673 }
3674
3675 skb->dev = u_ctx->lldi.ports[0];
3676 set_wr_txq(skb, CPL_PRIORITY_DATA, a_ctx(tfm)->tx_qidx);
3677 chcr_send_wr(skb);
3678 return isfull ? -EBUSY : -EINPROGRESS;
3679 }
3680
3681 static int chcr_aead_encrypt(struct aead_request *req)
3682 {
3683 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
3684 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
3685
3686 reqctx->verify = VERIFY_HW;
3687 reqctx->op = CHCR_ENCRYPT_OP;
3688
3689 switch (get_aead_subtype(tfm)) {
3690 case CRYPTO_ALG_SUB_TYPE_CTR_SHA:
3691 case CRYPTO_ALG_SUB_TYPE_CBC_SHA:
3692 case CRYPTO_ALG_SUB_TYPE_CBC_NULL:
3693 case CRYPTO_ALG_SUB_TYPE_CTR_NULL:
3694 return chcr_aead_op(req, 0, create_authenc_wr);
3695 case CRYPTO_ALG_SUB_TYPE_AEAD_CCM:
3696 case CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309:
3697 return chcr_aead_op(req, 0, create_aead_ccm_wr);
3698 default:
3699 return chcr_aead_op(req, 0, create_gcm_wr);
3700 }
3701 }
3702
3703 static int chcr_aead_decrypt(struct aead_request *req)
3704 {
3705 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
3706 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3707 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
3708 int size;
3709
3710 if (aeadctx->mayverify == VERIFY_SW) {
3711 size = crypto_aead_maxauthsize(tfm);
3712 reqctx->verify = VERIFY_SW;
3713 } else {
3714 size = 0;
3715 reqctx->verify = VERIFY_HW;
3716 }
3717 reqctx->op = CHCR_DECRYPT_OP;
3718 switch (get_aead_subtype(tfm)) {
3719 case CRYPTO_ALG_SUB_TYPE_CBC_SHA:
3720 case CRYPTO_ALG_SUB_TYPE_CTR_SHA:
3721 case CRYPTO_ALG_SUB_TYPE_CBC_NULL:
3722 case CRYPTO_ALG_SUB_TYPE_CTR_NULL:
3723 return chcr_aead_op(req, size, create_authenc_wr);
3724 case CRYPTO_ALG_SUB_TYPE_AEAD_CCM:
3725 case CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309:
3726 return chcr_aead_op(req, size, create_aead_ccm_wr);
3727 default:
3728 return chcr_aead_op(req, size, create_gcm_wr);
3729 }
3730 }
3731
3732 static struct chcr_alg_template driver_algs[] = {
3733 /* AES-CBC */
3734 {
3735 .type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_SUB_TYPE_CBC,
3736 .is_registered = 0,
3737 .alg.crypto = {
3738 .cra_name = "cbc(aes)",
3739 .cra_driver_name = "cbc-aes-chcr",
3740 .cra_blocksize = AES_BLOCK_SIZE,
3741 .cra_init = chcr_cra_init,
3742 .cra_exit = chcr_cra_exit,
3743 .cra_u.ablkcipher = {
3744 .min_keysize = AES_MIN_KEY_SIZE,
3745 .max_keysize = AES_MAX_KEY_SIZE,
3746 .ivsize = AES_BLOCK_SIZE,
3747 .setkey = chcr_aes_cbc_setkey,
3748 .encrypt = chcr_aes_encrypt,
3749 .decrypt = chcr_aes_decrypt,
3750 }
3751 }
3752 },
3753 {
3754 .type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_SUB_TYPE_XTS,
3755 .is_registered = 0,
3756 .alg.crypto = {
3757 .cra_name = "xts(aes)",
3758 .cra_driver_name = "xts-aes-chcr",
3759 .cra_blocksize = AES_BLOCK_SIZE,
3760 .cra_init = chcr_cra_init,
3761 .cra_exit = NULL,
3762 .cra_u .ablkcipher = {
3763 .min_keysize = 2 * AES_MIN_KEY_SIZE,
3764 .max_keysize = 2 * AES_MAX_KEY_SIZE,
3765 .ivsize = AES_BLOCK_SIZE,
3766 .setkey = chcr_aes_xts_setkey,
3767 .encrypt = chcr_aes_encrypt,
3768 .decrypt = chcr_aes_decrypt,
3769 }
3770 }
3771 },
3772 {
3773 .type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_SUB_TYPE_CTR,
3774 .is_registered = 0,
3775 .alg.crypto = {
3776 .cra_name = "ctr(aes)",
3777 .cra_driver_name = "ctr-aes-chcr",
3778 .cra_blocksize = 1,
3779 .cra_init = chcr_cra_init,
3780 .cra_exit = chcr_cra_exit,
3781 .cra_u.ablkcipher = {
3782 .min_keysize = AES_MIN_KEY_SIZE,
3783 .max_keysize = AES_MAX_KEY_SIZE,
3784 .ivsize = AES_BLOCK_SIZE,
3785 .setkey = chcr_aes_ctr_setkey,
3786 .encrypt = chcr_aes_encrypt,
3787 .decrypt = chcr_aes_decrypt,
3788 }
3789 }
3790 },
3791 {
3792 .type = CRYPTO_ALG_TYPE_ABLKCIPHER |
3793 CRYPTO_ALG_SUB_TYPE_CTR_RFC3686,
3794 .is_registered = 0,
3795 .alg.crypto = {
3796 .cra_name = "rfc3686(ctr(aes))",
3797 .cra_driver_name = "rfc3686-ctr-aes-chcr",
3798 .cra_blocksize = 1,
3799 .cra_init = chcr_rfc3686_init,
3800 .cra_exit = chcr_cra_exit,
3801 .cra_u.ablkcipher = {
3802 .min_keysize = AES_MIN_KEY_SIZE +
3803 CTR_RFC3686_NONCE_SIZE,
3804 .max_keysize = AES_MAX_KEY_SIZE +
3805 CTR_RFC3686_NONCE_SIZE,
3806 .ivsize = CTR_RFC3686_IV_SIZE,
3807 .setkey = chcr_aes_rfc3686_setkey,
3808 .encrypt = chcr_aes_encrypt,
3809 .decrypt = chcr_aes_decrypt,
3810 }
3811 }
3812 },
3813 /* SHA */
3814 {
3815 .type = CRYPTO_ALG_TYPE_AHASH,
3816 .is_registered = 0,
3817 .alg.hash = {
3818 .halg.digestsize = SHA1_DIGEST_SIZE,
3819 .halg.base = {
3820 .cra_name = "sha1",
3821 .cra_driver_name = "sha1-chcr",
3822 .cra_blocksize = SHA1_BLOCK_SIZE,
3823 }
3824 }
3825 },
3826 {
3827 .type = CRYPTO_ALG_TYPE_AHASH,
3828 .is_registered = 0,
3829 .alg.hash = {
3830 .halg.digestsize = SHA256_DIGEST_SIZE,
3831 .halg.base = {
3832 .cra_name = "sha256",
3833 .cra_driver_name = "sha256-chcr",
3834 .cra_blocksize = SHA256_BLOCK_SIZE,
3835 }
3836 }
3837 },
3838 {
3839 .type = CRYPTO_ALG_TYPE_AHASH,
3840 .is_registered = 0,
3841 .alg.hash = {
3842 .halg.digestsize = SHA224_DIGEST_SIZE,
3843 .halg.base = {
3844 .cra_name = "sha224",
3845 .cra_driver_name = "sha224-chcr",
3846 .cra_blocksize = SHA224_BLOCK_SIZE,
3847 }
3848 }
3849 },
3850 {
3851 .type = CRYPTO_ALG_TYPE_AHASH,
3852 .is_registered = 0,
3853 .alg.hash = {
3854 .halg.digestsize = SHA384_DIGEST_SIZE,
3855 .halg.base = {
3856 .cra_name = "sha384",
3857 .cra_driver_name = "sha384-chcr",
3858 .cra_blocksize = SHA384_BLOCK_SIZE,
3859 }
3860 }
3861 },
3862 {
3863 .type = CRYPTO_ALG_TYPE_AHASH,
3864 .is_registered = 0,
3865 .alg.hash = {
3866 .halg.digestsize = SHA512_DIGEST_SIZE,
3867 .halg.base = {
3868 .cra_name = "sha512",
3869 .cra_driver_name = "sha512-chcr",
3870 .cra_blocksize = SHA512_BLOCK_SIZE,
3871 }
3872 }
3873 },
3874 /* HMAC */
3875 {
3876 .type = CRYPTO_ALG_TYPE_HMAC,
3877 .is_registered = 0,
3878 .alg.hash = {
3879 .halg.digestsize = SHA1_DIGEST_SIZE,
3880 .halg.base = {
3881 .cra_name = "hmac(sha1)",
3882 .cra_driver_name = "hmac-sha1-chcr",
3883 .cra_blocksize = SHA1_BLOCK_SIZE,
3884 }
3885 }
3886 },
3887 {
3888 .type = CRYPTO_ALG_TYPE_HMAC,
3889 .is_registered = 0,
3890 .alg.hash = {
3891 .halg.digestsize = SHA224_DIGEST_SIZE,
3892 .halg.base = {
3893 .cra_name = "hmac(sha224)",
3894 .cra_driver_name = "hmac-sha224-chcr",
3895 .cra_blocksize = SHA224_BLOCK_SIZE,
3896 }
3897 }
3898 },
3899 {
3900 .type = CRYPTO_ALG_TYPE_HMAC,
3901 .is_registered = 0,
3902 .alg.hash = {
3903 .halg.digestsize = SHA256_DIGEST_SIZE,
3904 .halg.base = {
3905 .cra_name = "hmac(sha256)",
3906 .cra_driver_name = "hmac-sha256-chcr",
3907 .cra_blocksize = SHA256_BLOCK_SIZE,
3908 }
3909 }
3910 },
3911 {
3912 .type = CRYPTO_ALG_TYPE_HMAC,
3913 .is_registered = 0,
3914 .alg.hash = {
3915 .halg.digestsize = SHA384_DIGEST_SIZE,
3916 .halg.base = {
3917 .cra_name = "hmac(sha384)",
3918 .cra_driver_name = "hmac-sha384-chcr",
3919 .cra_blocksize = SHA384_BLOCK_SIZE,
3920 }
3921 }
3922 },
3923 {
3924 .type = CRYPTO_ALG_TYPE_HMAC,
3925 .is_registered = 0,
3926 .alg.hash = {
3927 .halg.digestsize = SHA512_DIGEST_SIZE,
3928 .halg.base = {
3929 .cra_name = "hmac(sha512)",
3930 .cra_driver_name = "hmac-sha512-chcr",
3931 .cra_blocksize = SHA512_BLOCK_SIZE,
3932 }
3933 }
3934 },
3935 /* Add AEAD Algorithms */
3936 {
3937 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_GCM,
3938 .is_registered = 0,
3939 .alg.aead = {
3940 .base = {
3941 .cra_name = "gcm(aes)",
3942 .cra_driver_name = "gcm-aes-chcr",
3943 .cra_blocksize = 1,
3944 .cra_priority = CHCR_AEAD_PRIORITY,
3945 .cra_ctxsize = sizeof(struct chcr_context) +
3946 sizeof(struct chcr_aead_ctx) +
3947 sizeof(struct chcr_gcm_ctx),
3948 },
3949 .ivsize = GCM_AES_IV_SIZE,
3950 .maxauthsize = GHASH_DIGEST_SIZE,
3951 .setkey = chcr_gcm_setkey,
3952 .setauthsize = chcr_gcm_setauthsize,
3953 }
3954 },
3955 {
3956 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106,
3957 .is_registered = 0,
3958 .alg.aead = {
3959 .base = {
3960 .cra_name = "rfc4106(gcm(aes))",
3961 .cra_driver_name = "rfc4106-gcm-aes-chcr",
3962 .cra_blocksize = 1,
3963 .cra_priority = CHCR_AEAD_PRIORITY + 1,
3964 .cra_ctxsize = sizeof(struct chcr_context) +
3965 sizeof(struct chcr_aead_ctx) +
3966 sizeof(struct chcr_gcm_ctx),
3967
3968 },
3969 .ivsize = GCM_RFC4106_IV_SIZE,
3970 .maxauthsize = GHASH_DIGEST_SIZE,
3971 .setkey = chcr_gcm_setkey,
3972 .setauthsize = chcr_4106_4309_setauthsize,
3973 }
3974 },
3975 {
3976 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_CCM,
3977 .is_registered = 0,
3978 .alg.aead = {
3979 .base = {
3980 .cra_name = "ccm(aes)",
3981 .cra_driver_name = "ccm-aes-chcr",
3982 .cra_blocksize = 1,
3983 .cra_priority = CHCR_AEAD_PRIORITY,
3984 .cra_ctxsize = sizeof(struct chcr_context) +
3985 sizeof(struct chcr_aead_ctx),
3986
3987 },
3988 .ivsize = AES_BLOCK_SIZE,
3989 .maxauthsize = GHASH_DIGEST_SIZE,
3990 .setkey = chcr_aead_ccm_setkey,
3991 .setauthsize = chcr_ccm_setauthsize,
3992 }
3993 },
3994 {
3995 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309,
3996 .is_registered = 0,
3997 .alg.aead = {
3998 .base = {
3999 .cra_name = "rfc4309(ccm(aes))",
4000 .cra_driver_name = "rfc4309-ccm-aes-chcr",
4001 .cra_blocksize = 1,
4002 .cra_priority = CHCR_AEAD_PRIORITY + 1,
4003 .cra_ctxsize = sizeof(struct chcr_context) +
4004 sizeof(struct chcr_aead_ctx),
4005
4006 },
4007 .ivsize = 8,
4008 .maxauthsize = GHASH_DIGEST_SIZE,
4009 .setkey = chcr_aead_rfc4309_setkey,
4010 .setauthsize = chcr_4106_4309_setauthsize,
4011 }
4012 },
4013 {
4014 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
4015 .is_registered = 0,
4016 .alg.aead = {
4017 .base = {
4018 .cra_name = "authenc(hmac(sha1),cbc(aes))",
4019 .cra_driver_name =
4020 "authenc-hmac-sha1-cbc-aes-chcr",
4021 .cra_blocksize = AES_BLOCK_SIZE,
4022 .cra_priority = CHCR_AEAD_PRIORITY,
4023 .cra_ctxsize = sizeof(struct chcr_context) +
4024 sizeof(struct chcr_aead_ctx) +
4025 sizeof(struct chcr_authenc_ctx),
4026
4027 },
4028 .ivsize = AES_BLOCK_SIZE,
4029 .maxauthsize = SHA1_DIGEST_SIZE,
4030 .setkey = chcr_authenc_setkey,
4031 .setauthsize = chcr_authenc_setauthsize,
4032 }
4033 },
4034 {
4035 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
4036 .is_registered = 0,
4037 .alg.aead = {
4038 .base = {
4039
4040 .cra_name = "authenc(hmac(sha256),cbc(aes))",
4041 .cra_driver_name =
4042 "authenc-hmac-sha256-cbc-aes-chcr",
4043 .cra_blocksize = AES_BLOCK_SIZE,
4044 .cra_priority = CHCR_AEAD_PRIORITY,
4045 .cra_ctxsize = sizeof(struct chcr_context) +
4046 sizeof(struct chcr_aead_ctx) +
4047 sizeof(struct chcr_authenc_ctx),
4048
4049 },
4050 .ivsize = AES_BLOCK_SIZE,
4051 .maxauthsize = SHA256_DIGEST_SIZE,
4052 .setkey = chcr_authenc_setkey,
4053 .setauthsize = chcr_authenc_setauthsize,
4054 }
4055 },
4056 {
4057 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
4058 .is_registered = 0,
4059 .alg.aead = {
4060 .base = {
4061 .cra_name = "authenc(hmac(sha224),cbc(aes))",
4062 .cra_driver_name =
4063 "authenc-hmac-sha224-cbc-aes-chcr",
4064 .cra_blocksize = AES_BLOCK_SIZE,
4065 .cra_priority = CHCR_AEAD_PRIORITY,
4066 .cra_ctxsize = sizeof(struct chcr_context) +
4067 sizeof(struct chcr_aead_ctx) +
4068 sizeof(struct chcr_authenc_ctx),
4069 },
4070 .ivsize = AES_BLOCK_SIZE,
4071 .maxauthsize = SHA224_DIGEST_SIZE,
4072 .setkey = chcr_authenc_setkey,
4073 .setauthsize = chcr_authenc_setauthsize,
4074 }
4075 },
4076 {
4077 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
4078 .is_registered = 0,
4079 .alg.aead = {
4080 .base = {
4081 .cra_name = "authenc(hmac(sha384),cbc(aes))",
4082 .cra_driver_name =
4083 "authenc-hmac-sha384-cbc-aes-chcr",
4084 .cra_blocksize = AES_BLOCK_SIZE,
4085 .cra_priority = CHCR_AEAD_PRIORITY,
4086 .cra_ctxsize = sizeof(struct chcr_context) +
4087 sizeof(struct chcr_aead_ctx) +
4088 sizeof(struct chcr_authenc_ctx),
4089
4090 },
4091 .ivsize = AES_BLOCK_SIZE,
4092 .maxauthsize = SHA384_DIGEST_SIZE,
4093 .setkey = chcr_authenc_setkey,
4094 .setauthsize = chcr_authenc_setauthsize,
4095 }
4096 },
4097 {
4098 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
4099 .is_registered = 0,
4100 .alg.aead = {
4101 .base = {
4102 .cra_name = "authenc(hmac(sha512),cbc(aes))",
4103 .cra_driver_name =
4104 "authenc-hmac-sha512-cbc-aes-chcr",
4105 .cra_blocksize = AES_BLOCK_SIZE,
4106 .cra_priority = CHCR_AEAD_PRIORITY,
4107 .cra_ctxsize = sizeof(struct chcr_context) +
4108 sizeof(struct chcr_aead_ctx) +
4109 sizeof(struct chcr_authenc_ctx),
4110
4111 },
4112 .ivsize = AES_BLOCK_SIZE,
4113 .maxauthsize = SHA512_DIGEST_SIZE,
4114 .setkey = chcr_authenc_setkey,
4115 .setauthsize = chcr_authenc_setauthsize,
4116 }
4117 },
4118 {
4119 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_NULL,
4120 .is_registered = 0,
4121 .alg.aead = {
4122 .base = {
4123 .cra_name = "authenc(digest_null,cbc(aes))",
4124 .cra_driver_name =
4125 "authenc-digest_null-cbc-aes-chcr",
4126 .cra_blocksize = AES_BLOCK_SIZE,
4127 .cra_priority = CHCR_AEAD_PRIORITY,
4128 .cra_ctxsize = sizeof(struct chcr_context) +
4129 sizeof(struct chcr_aead_ctx) +
4130 sizeof(struct chcr_authenc_ctx),
4131
4132 },
4133 .ivsize = AES_BLOCK_SIZE,
4134 .maxauthsize = 0,
4135 .setkey = chcr_aead_digest_null_setkey,
4136 .setauthsize = chcr_authenc_null_setauthsize,
4137 }
4138 },
4139 {
4140 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4141 .is_registered = 0,
4142 .alg.aead = {
4143 .base = {
4144 .cra_name = "authenc(hmac(sha1),rfc3686(ctr(aes)))",
4145 .cra_driver_name =
4146 "authenc-hmac-sha1-rfc3686-ctr-aes-chcr",
4147 .cra_blocksize = 1,
4148 .cra_priority = CHCR_AEAD_PRIORITY,
4149 .cra_ctxsize = sizeof(struct chcr_context) +
4150 sizeof(struct chcr_aead_ctx) +
4151 sizeof(struct chcr_authenc_ctx),
4152
4153 },
4154 .ivsize = CTR_RFC3686_IV_SIZE,
4155 .maxauthsize = SHA1_DIGEST_SIZE,
4156 .setkey = chcr_authenc_setkey,
4157 .setauthsize = chcr_authenc_setauthsize,
4158 }
4159 },
4160 {
4161 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4162 .is_registered = 0,
4163 .alg.aead = {
4164 .base = {
4165
4166 .cra_name = "authenc(hmac(sha256),rfc3686(ctr(aes)))",
4167 .cra_driver_name =
4168 "authenc-hmac-sha256-rfc3686-ctr-aes-chcr",
4169 .cra_blocksize = 1,
4170 .cra_priority = CHCR_AEAD_PRIORITY,
4171 .cra_ctxsize = sizeof(struct chcr_context) +
4172 sizeof(struct chcr_aead_ctx) +
4173 sizeof(struct chcr_authenc_ctx),
4174
4175 },
4176 .ivsize = CTR_RFC3686_IV_SIZE,
4177 .maxauthsize = SHA256_DIGEST_SIZE,
4178 .setkey = chcr_authenc_setkey,
4179 .setauthsize = chcr_authenc_setauthsize,
4180 }
4181 },
4182 {
4183 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4184 .is_registered = 0,
4185 .alg.aead = {
4186 .base = {
4187 .cra_name = "authenc(hmac(sha224),rfc3686(ctr(aes)))",
4188 .cra_driver_name =
4189 "authenc-hmac-sha224-rfc3686-ctr-aes-chcr",
4190 .cra_blocksize = 1,
4191 .cra_priority = CHCR_AEAD_PRIORITY,
4192 .cra_ctxsize = sizeof(struct chcr_context) +
4193 sizeof(struct chcr_aead_ctx) +
4194 sizeof(struct chcr_authenc_ctx),
4195 },
4196 .ivsize = CTR_RFC3686_IV_SIZE,
4197 .maxauthsize = SHA224_DIGEST_SIZE,
4198 .setkey = chcr_authenc_setkey,
4199 .setauthsize = chcr_authenc_setauthsize,
4200 }
4201 },
4202 {
4203 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4204 .is_registered = 0,
4205 .alg.aead = {
4206 .base = {
4207 .cra_name = "authenc(hmac(sha384),rfc3686(ctr(aes)))",
4208 .cra_driver_name =
4209 "authenc-hmac-sha384-rfc3686-ctr-aes-chcr",
4210 .cra_blocksize = 1,
4211 .cra_priority = CHCR_AEAD_PRIORITY,
4212 .cra_ctxsize = sizeof(struct chcr_context) +
4213 sizeof(struct chcr_aead_ctx) +
4214 sizeof(struct chcr_authenc_ctx),
4215
4216 },
4217 .ivsize = CTR_RFC3686_IV_SIZE,
4218 .maxauthsize = SHA384_DIGEST_SIZE,
4219 .setkey = chcr_authenc_setkey,
4220 .setauthsize = chcr_authenc_setauthsize,
4221 }
4222 },
4223 {
4224 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4225 .is_registered = 0,
4226 .alg.aead = {
4227 .base = {
4228 .cra_name = "authenc(hmac(sha512),rfc3686(ctr(aes)))",
4229 .cra_driver_name =
4230 "authenc-hmac-sha512-rfc3686-ctr-aes-chcr",
4231 .cra_blocksize = 1,
4232 .cra_priority = CHCR_AEAD_PRIORITY,
4233 .cra_ctxsize = sizeof(struct chcr_context) +
4234 sizeof(struct chcr_aead_ctx) +
4235 sizeof(struct chcr_authenc_ctx),
4236
4237 },
4238 .ivsize = CTR_RFC3686_IV_SIZE,
4239 .maxauthsize = SHA512_DIGEST_SIZE,
4240 .setkey = chcr_authenc_setkey,
4241 .setauthsize = chcr_authenc_setauthsize,
4242 }
4243 },
4244 {
4245 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_NULL,
4246 .is_registered = 0,
4247 .alg.aead = {
4248 .base = {
4249 .cra_name = "authenc(digest_null,rfc3686(ctr(aes)))",
4250 .cra_driver_name =
4251 "authenc-digest_null-rfc3686-ctr-aes-chcr",
4252 .cra_blocksize = 1,
4253 .cra_priority = CHCR_AEAD_PRIORITY,
4254 .cra_ctxsize = sizeof(struct chcr_context) +
4255 sizeof(struct chcr_aead_ctx) +
4256 sizeof(struct chcr_authenc_ctx),
4257
4258 },
4259 .ivsize = CTR_RFC3686_IV_SIZE,
4260 .maxauthsize = 0,
4261 .setkey = chcr_aead_digest_null_setkey,
4262 .setauthsize = chcr_authenc_null_setauthsize,
4263 }
4264 },
4265 };
4266
4267 /*
4268 * chcr_unregister_alg - Deregister crypto algorithms with
4269 * kernel framework.
4270 */
4271 static int chcr_unregister_alg(void)
4272 {
4273 int i;
4274
4275 for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
4276 switch (driver_algs[i].type & CRYPTO_ALG_TYPE_MASK) {
4277 case CRYPTO_ALG_TYPE_ABLKCIPHER:
4278 if (driver_algs[i].is_registered)
4279 crypto_unregister_alg(
4280 &driver_algs[i].alg.crypto);
4281 break;
4282 case CRYPTO_ALG_TYPE_AEAD:
4283 if (driver_algs[i].is_registered)
4284 crypto_unregister_aead(
4285 &driver_algs[i].alg.aead);
4286 break;
4287 case CRYPTO_ALG_TYPE_AHASH:
4288 if (driver_algs[i].is_registered)
4289 crypto_unregister_ahash(
4290 &driver_algs[i].alg.hash);
4291 break;
4292 }
4293 driver_algs[i].is_registered = 0;
4294 }
4295 return 0;
4296 }
4297
4298 #define SZ_AHASH_CTX sizeof(struct chcr_context)
4299 #define SZ_AHASH_H_CTX (sizeof(struct chcr_context) + sizeof(struct hmac_ctx))
4300 #define SZ_AHASH_REQ_CTX sizeof(struct chcr_ahash_req_ctx)
4301
4302 /*
4303 * chcr_register_alg - Register crypto algorithms with kernel framework.
4304 */
4305 static int chcr_register_alg(void)
4306 {
4307 struct crypto_alg ai;
4308 struct ahash_alg *a_hash;
4309 int err = 0, i;
4310 char *name = NULL;
4311
4312 for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
4313 if (driver_algs[i].is_registered)
4314 continue;
4315 switch (driver_algs[i].type & CRYPTO_ALG_TYPE_MASK) {
4316 case CRYPTO_ALG_TYPE_ABLKCIPHER:
4317 driver_algs[i].alg.crypto.cra_priority =
4318 CHCR_CRA_PRIORITY;
4319 driver_algs[i].alg.crypto.cra_module = THIS_MODULE;
4320 driver_algs[i].alg.crypto.cra_flags =
4321 CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC |
4322 CRYPTO_ALG_NEED_FALLBACK;
4323 driver_algs[i].alg.crypto.cra_ctxsize =
4324 sizeof(struct chcr_context) +
4325 sizeof(struct ablk_ctx);
4326 driver_algs[i].alg.crypto.cra_alignmask = 0;
4327 driver_algs[i].alg.crypto.cra_type =
4328 &crypto_ablkcipher_type;
4329 err = crypto_register_alg(&driver_algs[i].alg.crypto);
4330 name = driver_algs[i].alg.crypto.cra_driver_name;
4331 break;
4332 case CRYPTO_ALG_TYPE_AEAD:
4333 driver_algs[i].alg.aead.base.cra_flags =
4334 CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK;
4335 driver_algs[i].alg.aead.encrypt = chcr_aead_encrypt;
4336 driver_algs[i].alg.aead.decrypt = chcr_aead_decrypt;
4337 driver_algs[i].alg.aead.init = chcr_aead_cra_init;
4338 driver_algs[i].alg.aead.exit = chcr_aead_cra_exit;
4339 driver_algs[i].alg.aead.base.cra_module = THIS_MODULE;
4340 err = crypto_register_aead(&driver_algs[i].alg.aead);
4341 name = driver_algs[i].alg.aead.base.cra_driver_name;
4342 break;
4343 case CRYPTO_ALG_TYPE_AHASH:
4344 a_hash = &driver_algs[i].alg.hash;
4345 a_hash->update = chcr_ahash_update;
4346 a_hash->final = chcr_ahash_final;
4347 a_hash->finup = chcr_ahash_finup;
4348 a_hash->digest = chcr_ahash_digest;
4349 a_hash->export = chcr_ahash_export;
4350 a_hash->import = chcr_ahash_import;
4351 a_hash->halg.statesize = SZ_AHASH_REQ_CTX;
4352 a_hash->halg.base.cra_priority = CHCR_CRA_PRIORITY;
4353 a_hash->halg.base.cra_module = THIS_MODULE;
4354 a_hash->halg.base.cra_flags = CRYPTO_ALG_ASYNC;
4355 a_hash->halg.base.cra_alignmask = 0;
4356 a_hash->halg.base.cra_exit = NULL;
4357
4358 if (driver_algs[i].type == CRYPTO_ALG_TYPE_HMAC) {
4359 a_hash->halg.base.cra_init = chcr_hmac_cra_init;
4360 a_hash->halg.base.cra_exit = chcr_hmac_cra_exit;
4361 a_hash->init = chcr_hmac_init;
4362 a_hash->setkey = chcr_ahash_setkey;
4363 a_hash->halg.base.cra_ctxsize = SZ_AHASH_H_CTX;
4364 } else {
4365 a_hash->init = chcr_sha_init;
4366 a_hash->halg.base.cra_ctxsize = SZ_AHASH_CTX;
4367 a_hash->halg.base.cra_init = chcr_sha_cra_init;
4368 }
4369 err = crypto_register_ahash(&driver_algs[i].alg.hash);
4370 ai = driver_algs[i].alg.hash.halg.base;
4371 name = ai.cra_driver_name;
4372 break;
4373 }
4374 if (err) {
4375 pr_err("chcr : %s : Algorithm registration failed\n",
4376 name);
4377 goto register_err;
4378 } else {
4379 driver_algs[i].is_registered = 1;
4380 }
4381 }
4382 return 0;
4383
4384 register_err:
4385 chcr_unregister_alg();
4386 return err;
4387 }
4388
4389 /*
4390 * start_crypto - Register the crypto algorithms.
4391 * This should called once when the first device comesup. After this
4392 * kernel will start calling driver APIs for crypto operations.
4393 */
4394 int start_crypto(void)
4395 {
4396 return chcr_register_alg();
4397 }
4398
4399 /*
4400 * stop_crypto - Deregister all the crypto algorithms with kernel.
4401 * This should be called once when the last device goes down. After this
4402 * kernel will not call the driver API for crypto operations.
4403 */
4404 int stop_crypto(void)
4405 {
4406 chcr_unregister_alg();
4407 return 0;
4408 }
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