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1/*
2 * This file is part of the Chelsio T6 Crypto driver for Linux.
3 *
4 * Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved.
5 *
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer.
19 *
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * SOFTWARE.
33 *
34 * Written and Maintained by:
35 * Manoj Malviya (manojmalviya@chelsio.com)
36 * Atul Gupta (atul.gupta@chelsio.com)
37 * Jitendra Lulla (jlulla@chelsio.com)
38 * Yeshaswi M R Gowda (yeshaswi@chelsio.com)
39 * Harsh Jain (harsh@chelsio.com)
40 */
41
42#define pr_fmt(fmt) "chcr:" fmt
43
44#include <linux/kernel.h>
45#include <linux/module.h>
46#include <linux/crypto.h>
47#include <linux/skbuff.h>
48#include <linux/rtnetlink.h>
49#include <linux/highmem.h>
50#include <linux/scatterlist.h>
51
52#include <crypto/aes.h>
53#include <crypto/algapi.h>
54#include <crypto/hash.h>
55#include <crypto/gcm.h>
56#include <crypto/sha.h>
57#include <crypto/authenc.h>
58#include <crypto/ctr.h>
59#include <crypto/gf128mul.h>
60#include <crypto/internal/aead.h>
61#include <crypto/null.h>
62#include <crypto/internal/skcipher.h>
63#include <crypto/aead.h>
64#include <crypto/scatterwalk.h>
65#include <crypto/internal/hash.h>
66
67#include "t4fw_api.h"
68#include "t4_msg.h"
69#include "chcr_core.h"
70#include "chcr_algo.h"
71#include "chcr_crypto.h"
72
73#define IV AES_BLOCK_SIZE
74
75static unsigned int sgl_ent_len[] = {
76 0, 0, 16, 24, 40, 48, 64, 72, 88,
77 96, 112, 120, 136, 144, 160, 168, 184,
78 192, 208, 216, 232, 240, 256, 264, 280,
79 288, 304, 312, 328, 336, 352, 360, 376
80};
81
82static unsigned int dsgl_ent_len[] = {
83 0, 32, 32, 48, 48, 64, 64, 80, 80,
84 112, 112, 128, 128, 144, 144, 160, 160,
85 192, 192, 208, 208, 224, 224, 240, 240,
86 272, 272, 288, 288, 304, 304, 320, 320
87};
88
89static u32 round_constant[11] = {
90 0x01000000, 0x02000000, 0x04000000, 0x08000000,
91 0x10000000, 0x20000000, 0x40000000, 0x80000000,
92 0x1B000000, 0x36000000, 0x6C000000
93};
94
95static int chcr_handle_cipher_resp(struct skcipher_request *req,
96 unsigned char *input, int err);
97
98static inline struct chcr_aead_ctx *AEAD_CTX(struct chcr_context *ctx)
99{
100 return ctx->crypto_ctx->aeadctx;
101}
102
103static inline struct ablk_ctx *ABLK_CTX(struct chcr_context *ctx)
104{
105 return ctx->crypto_ctx->ablkctx;
106}
107
108static inline struct hmac_ctx *HMAC_CTX(struct chcr_context *ctx)
109{
110 return ctx->crypto_ctx->hmacctx;
111}
112
113static inline struct chcr_gcm_ctx *GCM_CTX(struct chcr_aead_ctx *gctx)
114{
115 return gctx->ctx->gcm;
116}
117
118static inline struct chcr_authenc_ctx *AUTHENC_CTX(struct chcr_aead_ctx *gctx)
119{
120 return gctx->ctx->authenc;
121}
122
123static inline struct uld_ctx *ULD_CTX(struct chcr_context *ctx)
124{
125 return container_of(ctx->dev, struct uld_ctx, dev);
126}
127
128static inline int is_ofld_imm(const struct sk_buff *skb)
129{
130 return (skb->len <= SGE_MAX_WR_LEN);
131}
132
133static inline void chcr_init_hctx_per_wr(struct chcr_ahash_req_ctx *reqctx)
134{
135 memset(&reqctx->hctx_wr, 0, sizeof(struct chcr_hctx_per_wr));
136}
137
138static int sg_nents_xlen(struct scatterlist *sg, unsigned int reqlen,
139 unsigned int entlen,
140 unsigned int skip)
141{
142 int nents = 0;
143 unsigned int less;
144 unsigned int skip_len = 0;
145
146 while (sg && skip) {
147 if (sg_dma_len(sg) <= skip) {
148 skip -= sg_dma_len(sg);
149 skip_len = 0;
150 sg = sg_next(sg);
151 } else {
152 skip_len = skip;
153 skip = 0;
154 }
155 }
156
157 while (sg && reqlen) {
158 less = min(reqlen, sg_dma_len(sg) - skip_len);
159 nents += DIV_ROUND_UP(less, entlen);
160 reqlen -= less;
161 skip_len = 0;
162 sg = sg_next(sg);
163 }
164 return nents;
165}
166
167static inline int get_aead_subtype(struct crypto_aead *aead)
168{
169 struct aead_alg *alg = crypto_aead_alg(aead);
170 struct chcr_alg_template *chcr_crypto_alg =
171 container_of(alg, struct chcr_alg_template, alg.aead);
172 return chcr_crypto_alg->type & CRYPTO_ALG_SUB_TYPE_MASK;
173}
174
175void chcr_verify_tag(struct aead_request *req, u8 *input, int *err)
176{
177 u8 temp[SHA512_DIGEST_SIZE];
178 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
179 int authsize = crypto_aead_authsize(tfm);
180 struct cpl_fw6_pld *fw6_pld;
181 int cmp = 0;
182
183 fw6_pld = (struct cpl_fw6_pld *)input;
184 if ((get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106) ||
185 (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_GCM)) {
186 cmp = crypto_memneq(&fw6_pld->data[2], (fw6_pld + 1), authsize);
187 } else {
188
189 sg_pcopy_to_buffer(req->src, sg_nents(req->src), temp,
190 authsize, req->assoclen +
191 req->cryptlen - authsize);
192 cmp = crypto_memneq(temp, (fw6_pld + 1), authsize);
193 }
194 if (cmp)
195 *err = -EBADMSG;
196 else
197 *err = 0;
198}
199
200static int chcr_inc_wrcount(struct chcr_dev *dev)
201{
202 if (dev->state == CHCR_DETACH)
203 return 1;
204 atomic_inc(&dev->inflight);
205 return 0;
206}
207
208static inline void chcr_dec_wrcount(struct chcr_dev *dev)
209{
210 atomic_dec(&dev->inflight);
211}
212
213static inline int chcr_handle_aead_resp(struct aead_request *req,
214 unsigned char *input,
215 int err)
216{
217 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
218 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
219 struct chcr_dev *dev = a_ctx(tfm)->dev;
220
221 chcr_aead_common_exit(req);
222 if (reqctx->verify == VERIFY_SW) {
223 chcr_verify_tag(req, input, &err);
224 reqctx->verify = VERIFY_HW;
225 }
226 chcr_dec_wrcount(dev);
227 req->base.complete(&req->base, err);
228
229 return err;
230}
231
232static void get_aes_decrypt_key(unsigned char *dec_key,
233 const unsigned char *key,
234 unsigned int keylength)
235{
236 u32 temp;
237 u32 w_ring[MAX_NK];
238 int i, j, k;
239 u8 nr, nk;
240
241 switch (keylength) {
242 case AES_KEYLENGTH_128BIT:
243 nk = KEYLENGTH_4BYTES;
244 nr = NUMBER_OF_ROUNDS_10;
245 break;
246 case AES_KEYLENGTH_192BIT:
247 nk = KEYLENGTH_6BYTES;
248 nr = NUMBER_OF_ROUNDS_12;
249 break;
250 case AES_KEYLENGTH_256BIT:
251 nk = KEYLENGTH_8BYTES;
252 nr = NUMBER_OF_ROUNDS_14;
253 break;
254 default:
255 return;
256 }
257 for (i = 0; i < nk; i++)
258 w_ring[i] = get_unaligned_be32(&key[i * 4]);
259
260 i = 0;
261 temp = w_ring[nk - 1];
262 while (i + nk < (nr + 1) * 4) {
263 if (!(i % nk)) {
264 /* RotWord(temp) */
265 temp = (temp << 8) | (temp >> 24);
266 temp = aes_ks_subword(temp);
267 temp ^= round_constant[i / nk];
268 } else if (nk == 8 && (i % 4 == 0)) {
269 temp = aes_ks_subword(temp);
270 }
271 w_ring[i % nk] ^= temp;
272 temp = w_ring[i % nk];
273 i++;
274 }
275 i--;
276 for (k = 0, j = i % nk; k < nk; k++) {
277 put_unaligned_be32(w_ring[j], &dec_key[k * 4]);
278 j--;
279 if (j < 0)
280 j += nk;
281 }
282}
283
284static struct crypto_shash *chcr_alloc_shash(unsigned int ds)
285{
286 struct crypto_shash *base_hash = ERR_PTR(-EINVAL);
287
288 switch (ds) {
289 case SHA1_DIGEST_SIZE:
290 base_hash = crypto_alloc_shash("sha1", 0, 0);
291 break;
292 case SHA224_DIGEST_SIZE:
293 base_hash = crypto_alloc_shash("sha224", 0, 0);
294 break;
295 case SHA256_DIGEST_SIZE:
296 base_hash = crypto_alloc_shash("sha256", 0, 0);
297 break;
298 case SHA384_DIGEST_SIZE:
299 base_hash = crypto_alloc_shash("sha384", 0, 0);
300 break;
301 case SHA512_DIGEST_SIZE:
302 base_hash = crypto_alloc_shash("sha512", 0, 0);
303 break;
304 }
305
306 return base_hash;
307}
308
309static int chcr_compute_partial_hash(struct shash_desc *desc,
310 char *iopad, char *result_hash,
311 int digest_size)
312{
313 struct sha1_state sha1_st;
314 struct sha256_state sha256_st;
315 struct sha512_state sha512_st;
316 int error;
317
318 if (digest_size == SHA1_DIGEST_SIZE) {
319 error = crypto_shash_init(desc) ?:
320 crypto_shash_update(desc, iopad, SHA1_BLOCK_SIZE) ?:
321 crypto_shash_export(desc, (void *)&sha1_st);
322 memcpy(result_hash, sha1_st.state, SHA1_DIGEST_SIZE);
323 } else if (digest_size == SHA224_DIGEST_SIZE) {
324 error = crypto_shash_init(desc) ?:
325 crypto_shash_update(desc, iopad, SHA256_BLOCK_SIZE) ?:
326 crypto_shash_export(desc, (void *)&sha256_st);
327 memcpy(result_hash, sha256_st.state, SHA256_DIGEST_SIZE);
328
329 } else if (digest_size == SHA256_DIGEST_SIZE) {
330 error = crypto_shash_init(desc) ?:
331 crypto_shash_update(desc, iopad, SHA256_BLOCK_SIZE) ?:
332 crypto_shash_export(desc, (void *)&sha256_st);
333 memcpy(result_hash, sha256_st.state, SHA256_DIGEST_SIZE);
334
335 } else if (digest_size == SHA384_DIGEST_SIZE) {
336 error = crypto_shash_init(desc) ?:
337 crypto_shash_update(desc, iopad, SHA512_BLOCK_SIZE) ?:
338 crypto_shash_export(desc, (void *)&sha512_st);
339 memcpy(result_hash, sha512_st.state, SHA512_DIGEST_SIZE);
340
341 } else if (digest_size == SHA512_DIGEST_SIZE) {
342 error = crypto_shash_init(desc) ?:
343 crypto_shash_update(desc, iopad, SHA512_BLOCK_SIZE) ?:
344 crypto_shash_export(desc, (void *)&sha512_st);
345 memcpy(result_hash, sha512_st.state, SHA512_DIGEST_SIZE);
346 } else {
347 error = -EINVAL;
348 pr_err("Unknown digest size %d\n", digest_size);
349 }
350 return error;
351}
352
353static void chcr_change_order(char *buf, int ds)
354{
355 int i;
356
357 if (ds == SHA512_DIGEST_SIZE) {
358 for (i = 0; i < (ds / sizeof(u64)); i++)
359 *((__be64 *)buf + i) =
360 cpu_to_be64(*((u64 *)buf + i));
361 } else {
362 for (i = 0; i < (ds / sizeof(u32)); i++)
363 *((__be32 *)buf + i) =
364 cpu_to_be32(*((u32 *)buf + i));
365 }
366}
367
368static inline int is_hmac(struct crypto_tfm *tfm)
369{
370 struct crypto_alg *alg = tfm->__crt_alg;
371 struct chcr_alg_template *chcr_crypto_alg =
372 container_of(__crypto_ahash_alg(alg), struct chcr_alg_template,
373 alg.hash);
374 if (chcr_crypto_alg->type == CRYPTO_ALG_TYPE_HMAC)
375 return 1;
376 return 0;
377}
378
379static inline void dsgl_walk_init(struct dsgl_walk *walk,
380 struct cpl_rx_phys_dsgl *dsgl)
381{
382 walk->dsgl = dsgl;
383 walk->nents = 0;
384 walk->to = (struct phys_sge_pairs *)(dsgl + 1);
385}
386
387static inline void dsgl_walk_end(struct dsgl_walk *walk, unsigned short qid,
388 int pci_chan_id)
389{
390 struct cpl_rx_phys_dsgl *phys_cpl;
391
392 phys_cpl = walk->dsgl;
393
394 phys_cpl->op_to_tid = htonl(CPL_RX_PHYS_DSGL_OPCODE_V(CPL_RX_PHYS_DSGL)
395 | CPL_RX_PHYS_DSGL_ISRDMA_V(0));
396 phys_cpl->pcirlxorder_to_noofsgentr =
397 htonl(CPL_RX_PHYS_DSGL_PCIRLXORDER_V(0) |
398 CPL_RX_PHYS_DSGL_PCINOSNOOP_V(0) |
399 CPL_RX_PHYS_DSGL_PCITPHNTENB_V(0) |
400 CPL_RX_PHYS_DSGL_PCITPHNT_V(0) |
401 CPL_RX_PHYS_DSGL_DCAID_V(0) |
402 CPL_RX_PHYS_DSGL_NOOFSGENTR_V(walk->nents));
403 phys_cpl->rss_hdr_int.opcode = CPL_RX_PHYS_ADDR;
404 phys_cpl->rss_hdr_int.qid = htons(qid);
405 phys_cpl->rss_hdr_int.hash_val = 0;
406 phys_cpl->rss_hdr_int.channel = pci_chan_id;
407}
408
409static inline void dsgl_walk_add_page(struct dsgl_walk *walk,
410 size_t size,
411 dma_addr_t addr)
412{
413 int j;
414
415 if (!size)
416 return;
417 j = walk->nents;
418 walk->to->len[j % 8] = htons(size);
419 walk->to->addr[j % 8] = cpu_to_be64(addr);
420 j++;
421 if ((j % 8) == 0)
422 walk->to++;
423 walk->nents = j;
424}
425
426static void dsgl_walk_add_sg(struct dsgl_walk *walk,
427 struct scatterlist *sg,
428 unsigned int slen,
429 unsigned int skip)
430{
431 int skip_len = 0;
432 unsigned int left_size = slen, len = 0;
433 unsigned int j = walk->nents;
434 int offset, ent_len;
435
436 if (!slen)
437 return;
438 while (sg && skip) {
439 if (sg_dma_len(sg) <= skip) {
440 skip -= sg_dma_len(sg);
441 skip_len = 0;
442 sg = sg_next(sg);
443 } else {
444 skip_len = skip;
445 skip = 0;
446 }
447 }
448
449 while (left_size && sg) {
450 len = min_t(u32, left_size, sg_dma_len(sg) - skip_len);
451 offset = 0;
452 while (len) {
453 ent_len = min_t(u32, len, CHCR_DST_SG_SIZE);
454 walk->to->len[j % 8] = htons(ent_len);
455 walk->to->addr[j % 8] = cpu_to_be64(sg_dma_address(sg) +
456 offset + skip_len);
457 offset += ent_len;
458 len -= ent_len;
459 j++;
460 if ((j % 8) == 0)
461 walk->to++;
462 }
463 walk->last_sg = sg;
464 walk->last_sg_len = min_t(u32, left_size, sg_dma_len(sg) -
465 skip_len) + skip_len;
466 left_size -= min_t(u32, left_size, sg_dma_len(sg) - skip_len);
467 skip_len = 0;
468 sg = sg_next(sg);
469 }
470 walk->nents = j;
471}
472
473static inline void ulptx_walk_init(struct ulptx_walk *walk,
474 struct ulptx_sgl *ulp)
475{
476 walk->sgl = ulp;
477 walk->nents = 0;
478 walk->pair_idx = 0;
479 walk->pair = ulp->sge;
480 walk->last_sg = NULL;
481 walk->last_sg_len = 0;
482}
483
484static inline void ulptx_walk_end(struct ulptx_walk *walk)
485{
486 walk->sgl->cmd_nsge = htonl(ULPTX_CMD_V(ULP_TX_SC_DSGL) |
487 ULPTX_NSGE_V(walk->nents));
488}
489
490
491static inline void ulptx_walk_add_page(struct ulptx_walk *walk,
492 size_t size,
493 dma_addr_t addr)
494{
495 if (!size)
496 return;
497
498 if (walk->nents == 0) {
499 walk->sgl->len0 = cpu_to_be32(size);
500 walk->sgl->addr0 = cpu_to_be64(addr);
501 } else {
502 walk->pair->addr[walk->pair_idx] = cpu_to_be64(addr);
503 walk->pair->len[walk->pair_idx] = cpu_to_be32(size);
504 walk->pair_idx = !walk->pair_idx;
505 if (!walk->pair_idx)
506 walk->pair++;
507 }
508 walk->nents++;
509}
510
511static void ulptx_walk_add_sg(struct ulptx_walk *walk,
512 struct scatterlist *sg,
513 unsigned int len,
514 unsigned int skip)
515{
516 int small;
517 int skip_len = 0;
518 unsigned int sgmin;
519
520 if (!len)
521 return;
522 while (sg && skip) {
523 if (sg_dma_len(sg) <= skip) {
524 skip -= sg_dma_len(sg);
525 skip_len = 0;
526 sg = sg_next(sg);
527 } else {
528 skip_len = skip;
529 skip = 0;
530 }
531 }
532 WARN(!sg, "SG should not be null here\n");
533 if (sg && (walk->nents == 0)) {
534 small = min_t(unsigned int, sg_dma_len(sg) - skip_len, len);
535 sgmin = min_t(unsigned int, small, CHCR_SRC_SG_SIZE);
536 walk->sgl->len0 = cpu_to_be32(sgmin);
537 walk->sgl->addr0 = cpu_to_be64(sg_dma_address(sg) + skip_len);
538 walk->nents++;
539 len -= sgmin;
540 walk->last_sg = sg;
541 walk->last_sg_len = sgmin + skip_len;
542 skip_len += sgmin;
543 if (sg_dma_len(sg) == skip_len) {
544 sg = sg_next(sg);
545 skip_len = 0;
546 }
547 }
548
549 while (sg && len) {
550 small = min(sg_dma_len(sg) - skip_len, len);
551 sgmin = min_t(unsigned int, small, CHCR_SRC_SG_SIZE);
552 walk->pair->len[walk->pair_idx] = cpu_to_be32(sgmin);
553 walk->pair->addr[walk->pair_idx] =
554 cpu_to_be64(sg_dma_address(sg) + skip_len);
555 walk->pair_idx = !walk->pair_idx;
556 walk->nents++;
557 if (!walk->pair_idx)
558 walk->pair++;
559 len -= sgmin;
560 skip_len += sgmin;
561 walk->last_sg = sg;
562 walk->last_sg_len = skip_len;
563 if (sg_dma_len(sg) == skip_len) {
564 sg = sg_next(sg);
565 skip_len = 0;
566 }
567 }
568}
569
570static inline int get_cryptoalg_subtype(struct crypto_skcipher *tfm)
571{
572 struct skcipher_alg *alg = crypto_skcipher_alg(tfm);
573 struct chcr_alg_template *chcr_crypto_alg =
574 container_of(alg, struct chcr_alg_template, alg.skcipher);
575
576 return chcr_crypto_alg->type & CRYPTO_ALG_SUB_TYPE_MASK;
577}
578
579static int cxgb4_is_crypto_q_full(struct net_device *dev, unsigned int idx)
580{
581 struct adapter *adap = netdev2adap(dev);
582 struct sge_uld_txq_info *txq_info =
583 adap->sge.uld_txq_info[CXGB4_TX_CRYPTO];
584 struct sge_uld_txq *txq;
585 int ret = 0;
586
587 local_bh_disable();
588 txq = &txq_info->uldtxq[idx];
589 spin_lock(&txq->sendq.lock);
590 if (txq->full)
591 ret = -1;
592 spin_unlock(&txq->sendq.lock);
593 local_bh_enable();
594 return ret;
595}
596
597static int generate_copy_rrkey(struct ablk_ctx *ablkctx,
598 struct _key_ctx *key_ctx)
599{
600 if (ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC) {
601 memcpy(key_ctx->key, ablkctx->rrkey, ablkctx->enckey_len);
602 } else {
603 memcpy(key_ctx->key,
604 ablkctx->key + (ablkctx->enckey_len >> 1),
605 ablkctx->enckey_len >> 1);
606 memcpy(key_ctx->key + (ablkctx->enckey_len >> 1),
607 ablkctx->rrkey, ablkctx->enckey_len >> 1);
608 }
609 return 0;
610}
611
612static int chcr_hash_ent_in_wr(struct scatterlist *src,
613 unsigned int minsg,
614 unsigned int space,
615 unsigned int srcskip)
616{
617 int srclen = 0;
618 int srcsg = minsg;
619 int soffset = 0, sless;
620
621 if (sg_dma_len(src) == srcskip) {
622 src = sg_next(src);
623 srcskip = 0;
624 }
625 while (src && space > (sgl_ent_len[srcsg + 1])) {
626 sless = min_t(unsigned int, sg_dma_len(src) - soffset - srcskip,
627 CHCR_SRC_SG_SIZE);
628 srclen += sless;
629 soffset += sless;
630 srcsg++;
631 if (sg_dma_len(src) == (soffset + srcskip)) {
632 src = sg_next(src);
633 soffset = 0;
634 srcskip = 0;
635 }
636 }
637 return srclen;
638}
639
640static int chcr_sg_ent_in_wr(struct scatterlist *src,
641 struct scatterlist *dst,
642 unsigned int minsg,
643 unsigned int space,
644 unsigned int srcskip,
645 unsigned int dstskip)
646{
647 int srclen = 0, dstlen = 0;
648 int srcsg = minsg, dstsg = minsg;
649 int offset = 0, soffset = 0, less, sless = 0;
650
651 if (sg_dma_len(src) == srcskip) {
652 src = sg_next(src);
653 srcskip = 0;
654 }
655 if (sg_dma_len(dst) == dstskip) {
656 dst = sg_next(dst);
657 dstskip = 0;
658 }
659
660 while (src && dst &&
661 space > (sgl_ent_len[srcsg + 1] + dsgl_ent_len[dstsg])) {
662 sless = min_t(unsigned int, sg_dma_len(src) - srcskip - soffset,
663 CHCR_SRC_SG_SIZE);
664 srclen += sless;
665 srcsg++;
666 offset = 0;
667 while (dst && ((dstsg + 1) <= MAX_DSGL_ENT) &&
668 space > (sgl_ent_len[srcsg] + dsgl_ent_len[dstsg + 1])) {
669 if (srclen <= dstlen)
670 break;
671 less = min_t(unsigned int, sg_dma_len(dst) - offset -
672 dstskip, CHCR_DST_SG_SIZE);
673 dstlen += less;
674 offset += less;
675 if ((offset + dstskip) == sg_dma_len(dst)) {
676 dst = sg_next(dst);
677 offset = 0;
678 }
679 dstsg++;
680 dstskip = 0;
681 }
682 soffset += sless;
683 if ((soffset + srcskip) == sg_dma_len(src)) {
684 src = sg_next(src);
685 srcskip = 0;
686 soffset = 0;
687 }
688
689 }
690 return min(srclen, dstlen);
691}
692
693static int chcr_cipher_fallback(struct crypto_skcipher *cipher,
694 struct skcipher_request *req,
695 u8 *iv,
696 unsigned short op_type)
697{
698 struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req);
699 int err;
700
701 skcipher_request_set_tfm(&reqctx->fallback_req, cipher);
702 skcipher_request_set_callback(&reqctx->fallback_req, req->base.flags,
703 req->base.complete, req->base.data);
704 skcipher_request_set_crypt(&reqctx->fallback_req, req->src, req->dst,
705 req->cryptlen, iv);
706
707 err = op_type ? crypto_skcipher_decrypt(&reqctx->fallback_req) :
708 crypto_skcipher_encrypt(&reqctx->fallback_req);
709
710 return err;
711
712}
713
714static inline int get_qidxs(struct crypto_async_request *req,
715 unsigned int *txqidx, unsigned int *rxqidx)
716{
717 struct crypto_tfm *tfm = req->tfm;
718 int ret = 0;
719
720 switch (tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK) {
721 case CRYPTO_ALG_TYPE_AEAD:
722 {
723 struct aead_request *aead_req =
724 container_of(req, struct aead_request, base);
725 struct chcr_aead_reqctx *reqctx = aead_request_ctx(aead_req);
726 *txqidx = reqctx->txqidx;
727 *rxqidx = reqctx->rxqidx;
728 break;
729 }
730 case CRYPTO_ALG_TYPE_SKCIPHER:
731 {
732 struct skcipher_request *sk_req =
733 container_of(req, struct skcipher_request, base);
734 struct chcr_skcipher_req_ctx *reqctx =
735 skcipher_request_ctx(sk_req);
736 *txqidx = reqctx->txqidx;
737 *rxqidx = reqctx->rxqidx;
738 break;
739 }
740 case CRYPTO_ALG_TYPE_AHASH:
741 {
742 struct ahash_request *ahash_req =
743 container_of(req, struct ahash_request, base);
744 struct chcr_ahash_req_ctx *reqctx =
745 ahash_request_ctx(ahash_req);
746 *txqidx = reqctx->txqidx;
747 *rxqidx = reqctx->rxqidx;
748 break;
749 }
750 default:
751 ret = -EINVAL;
752 /* should never get here */
753 BUG();
754 break;
755 }
756 return ret;
757}
758
759static inline void create_wreq(struct chcr_context *ctx,
760 struct chcr_wr *chcr_req,
761 struct crypto_async_request *req,
762 unsigned int imm,
763 int hash_sz,
764 unsigned int len16,
765 unsigned int sc_len,
766 unsigned int lcb)
767{
768 struct uld_ctx *u_ctx = ULD_CTX(ctx);
769 unsigned int tx_channel_id, rx_channel_id;
770 unsigned int txqidx = 0, rxqidx = 0;
771 unsigned int qid, fid;
772
773 get_qidxs(req, &txqidx, &rxqidx);
774 qid = u_ctx->lldi.rxq_ids[rxqidx];
775 fid = u_ctx->lldi.rxq_ids[0];
776 tx_channel_id = txqidx / ctx->txq_perchan;
777 rx_channel_id = rxqidx / ctx->rxq_perchan;
778
779
780 chcr_req->wreq.op_to_cctx_size = FILL_WR_OP_CCTX_SIZE;
781 chcr_req->wreq.pld_size_hash_size =
782 htonl(FW_CRYPTO_LOOKASIDE_WR_HASH_SIZE_V(hash_sz));
783 chcr_req->wreq.len16_pkd =
784 htonl(FW_CRYPTO_LOOKASIDE_WR_LEN16_V(DIV_ROUND_UP(len16, 16)));
785 chcr_req->wreq.cookie = cpu_to_be64((uintptr_t)req);
786 chcr_req->wreq.rx_chid_to_rx_q_id = FILL_WR_RX_Q_ID(rx_channel_id, qid,
787 !!lcb, txqidx);
788
789 chcr_req->ulptx.cmd_dest = FILL_ULPTX_CMD_DEST(tx_channel_id, fid);
790 chcr_req->ulptx.len = htonl((DIV_ROUND_UP(len16, 16) -
791 ((sizeof(chcr_req->wreq)) >> 4)));
792 chcr_req->sc_imm.cmd_more = FILL_CMD_MORE(!imm);
793 chcr_req->sc_imm.len = cpu_to_be32(sizeof(struct cpl_tx_sec_pdu) +
794 sizeof(chcr_req->key_ctx) + sc_len);
795}
796
797/**
798 * create_cipher_wr - form the WR for cipher operations
799 * @req: cipher req.
800 * @ctx: crypto driver context of the request.
801 * @qid: ingress qid where response of this WR should be received.
802 * @op_type: encryption or decryption
803 */
804static struct sk_buff *create_cipher_wr(struct cipher_wr_param *wrparam)
805{
806 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(wrparam->req);
807 struct chcr_context *ctx = c_ctx(tfm);
808 struct ablk_ctx *ablkctx = ABLK_CTX(ctx);
809 struct sk_buff *skb = NULL;
810 struct chcr_wr *chcr_req;
811 struct cpl_rx_phys_dsgl *phys_cpl;
812 struct ulptx_sgl *ulptx;
813 struct chcr_skcipher_req_ctx *reqctx =
814 skcipher_request_ctx(wrparam->req);
815 unsigned int temp = 0, transhdr_len, dst_size;
816 int error;
817 int nents;
818 unsigned int kctx_len;
819 gfp_t flags = wrparam->req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ?
820 GFP_KERNEL : GFP_ATOMIC;
821 struct adapter *adap = padap(ctx->dev);
822 unsigned int rx_channel_id = reqctx->rxqidx / ctx->rxq_perchan;
823
824 nents = sg_nents_xlen(reqctx->dstsg, wrparam->bytes, CHCR_DST_SG_SIZE,
825 reqctx->dst_ofst);
826 dst_size = get_space_for_phys_dsgl(nents);
827 kctx_len = roundup(ablkctx->enckey_len, 16);
828 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
829 nents = sg_nents_xlen(reqctx->srcsg, wrparam->bytes,
830 CHCR_SRC_SG_SIZE, reqctx->src_ofst);
831 temp = reqctx->imm ? roundup(wrparam->bytes, 16) :
832 (sgl_len(nents) * 8);
833 transhdr_len += temp;
834 transhdr_len = roundup(transhdr_len, 16);
835 skb = alloc_skb(SGE_MAX_WR_LEN, flags);
836 if (!skb) {
837 error = -ENOMEM;
838 goto err;
839 }
840 chcr_req = __skb_put_zero(skb, transhdr_len);
841 chcr_req->sec_cpl.op_ivinsrtofst =
842 FILL_SEC_CPL_OP_IVINSR(rx_channel_id, 2, 1);
843
844 chcr_req->sec_cpl.pldlen = htonl(IV + wrparam->bytes);
845 chcr_req->sec_cpl.aadstart_cipherstop_hi =
846 FILL_SEC_CPL_CIPHERSTOP_HI(0, 0, IV + 1, 0);
847
848 chcr_req->sec_cpl.cipherstop_lo_authinsert =
849 FILL_SEC_CPL_AUTHINSERT(0, 0, 0, 0);
850 chcr_req->sec_cpl.seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(reqctx->op, 0,
851 ablkctx->ciph_mode,
852 0, 0, IV >> 1);
853 chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 0,
854 0, 1, dst_size);
855
856 chcr_req->key_ctx.ctx_hdr = ablkctx->key_ctx_hdr;
857 if ((reqctx->op == CHCR_DECRYPT_OP) &&
858 (!(get_cryptoalg_subtype(tfm) ==
859 CRYPTO_ALG_SUB_TYPE_CTR)) &&
860 (!(get_cryptoalg_subtype(tfm) ==
861 CRYPTO_ALG_SUB_TYPE_CTR_RFC3686))) {
862 generate_copy_rrkey(ablkctx, &chcr_req->key_ctx);
863 } else {
864 if ((ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC) ||
865 (ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CTR)) {
866 memcpy(chcr_req->key_ctx.key, ablkctx->key,
867 ablkctx->enckey_len);
868 } else {
869 memcpy(chcr_req->key_ctx.key, ablkctx->key +
870 (ablkctx->enckey_len >> 1),
871 ablkctx->enckey_len >> 1);
872 memcpy(chcr_req->key_ctx.key +
873 (ablkctx->enckey_len >> 1),
874 ablkctx->key,
875 ablkctx->enckey_len >> 1);
876 }
877 }
878 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
879 ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size);
880 chcr_add_cipher_src_ent(wrparam->req, ulptx, wrparam);
881 chcr_add_cipher_dst_ent(wrparam->req, phys_cpl, wrparam, wrparam->qid);
882
883 atomic_inc(&adap->chcr_stats.cipher_rqst);
884 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + kctx_len + IV
885 + (reqctx->imm ? (wrparam->bytes) : 0);
886 create_wreq(c_ctx(tfm), chcr_req, &(wrparam->req->base), reqctx->imm, 0,
887 transhdr_len, temp,
888 ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC);
889 reqctx->skb = skb;
890
891 if (reqctx->op && (ablkctx->ciph_mode ==
892 CHCR_SCMD_CIPHER_MODE_AES_CBC))
893 sg_pcopy_to_buffer(wrparam->req->src,
894 sg_nents(wrparam->req->src), wrparam->req->iv, 16,
895 reqctx->processed + wrparam->bytes - AES_BLOCK_SIZE);
896
897 return skb;
898err:
899 return ERR_PTR(error);
900}
901
902static inline int chcr_keyctx_ck_size(unsigned int keylen)
903{
904 int ck_size = 0;
905
906 if (keylen == AES_KEYSIZE_128)
907 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
908 else if (keylen == AES_KEYSIZE_192)
909 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
910 else if (keylen == AES_KEYSIZE_256)
911 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
912 else
913 ck_size = 0;
914
915 return ck_size;
916}
917static int chcr_cipher_fallback_setkey(struct crypto_skcipher *cipher,
918 const u8 *key,
919 unsigned int keylen)
920{
921 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
922
923 crypto_skcipher_clear_flags(ablkctx->sw_cipher,
924 CRYPTO_TFM_REQ_MASK);
925 crypto_skcipher_set_flags(ablkctx->sw_cipher,
926 cipher->base.crt_flags & CRYPTO_TFM_REQ_MASK);
927 return crypto_skcipher_setkey(ablkctx->sw_cipher, key, keylen);
928}
929
930static int chcr_aes_cbc_setkey(struct crypto_skcipher *cipher,
931 const u8 *key,
932 unsigned int keylen)
933{
934 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
935 unsigned int ck_size, context_size;
936 u16 alignment = 0;
937 int err;
938
939 err = chcr_cipher_fallback_setkey(cipher, key, keylen);
940 if (err)
941 goto badkey_err;
942
943 ck_size = chcr_keyctx_ck_size(keylen);
944 alignment = ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192 ? 8 : 0;
945 memcpy(ablkctx->key, key, keylen);
946 ablkctx->enckey_len = keylen;
947 get_aes_decrypt_key(ablkctx->rrkey, ablkctx->key, keylen << 3);
948 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD +
949 keylen + alignment) >> 4;
950
951 ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY,
952 0, 0, context_size);
953 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CBC;
954 return 0;
955badkey_err:
956 ablkctx->enckey_len = 0;
957
958 return err;
959}
960
961static int chcr_aes_ctr_setkey(struct crypto_skcipher *cipher,
962 const u8 *key,
963 unsigned int keylen)
964{
965 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
966 unsigned int ck_size, context_size;
967 u16 alignment = 0;
968 int err;
969
970 err = chcr_cipher_fallback_setkey(cipher, key, keylen);
971 if (err)
972 goto badkey_err;
973 ck_size = chcr_keyctx_ck_size(keylen);
974 alignment = (ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192) ? 8 : 0;
975 memcpy(ablkctx->key, key, keylen);
976 ablkctx->enckey_len = keylen;
977 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD +
978 keylen + alignment) >> 4;
979
980 ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY,
981 0, 0, context_size);
982 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CTR;
983
984 return 0;
985badkey_err:
986 ablkctx->enckey_len = 0;
987
988 return err;
989}
990
991static int chcr_aes_rfc3686_setkey(struct crypto_skcipher *cipher,
992 const u8 *key,
993 unsigned int keylen)
994{
995 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
996 unsigned int ck_size, context_size;
997 u16 alignment = 0;
998 int err;
999
1000 if (keylen < CTR_RFC3686_NONCE_SIZE)
1001 return -EINVAL;
1002 memcpy(ablkctx->nonce, key + (keylen - CTR_RFC3686_NONCE_SIZE),
1003 CTR_RFC3686_NONCE_SIZE);
1004
1005 keylen -= CTR_RFC3686_NONCE_SIZE;
1006 err = chcr_cipher_fallback_setkey(cipher, key, keylen);
1007 if (err)
1008 goto badkey_err;
1009
1010 ck_size = chcr_keyctx_ck_size(keylen);
1011 alignment = (ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192) ? 8 : 0;
1012 memcpy(ablkctx->key, key, keylen);
1013 ablkctx->enckey_len = keylen;
1014 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD +
1015 keylen + alignment) >> 4;
1016
1017 ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY,
1018 0, 0, context_size);
1019 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CTR;
1020
1021 return 0;
1022badkey_err:
1023 ablkctx->enckey_len = 0;
1024
1025 return err;
1026}
1027static void ctr_add_iv(u8 *dstiv, u8 *srciv, u32 add)
1028{
1029 unsigned int size = AES_BLOCK_SIZE;
1030 __be32 *b = (__be32 *)(dstiv + size);
1031 u32 c, prev;
1032
1033 memcpy(dstiv, srciv, AES_BLOCK_SIZE);
1034 for (; size >= 4; size -= 4) {
1035 prev = be32_to_cpu(*--b);
1036 c = prev + add;
1037 *b = cpu_to_be32(c);
1038 if (prev < c)
1039 break;
1040 add = 1;
1041 }
1042
1043}
1044
1045static unsigned int adjust_ctr_overflow(u8 *iv, u32 bytes)
1046{
1047 __be32 *b = (__be32 *)(iv + AES_BLOCK_SIZE);
1048 u64 c;
1049 u32 temp = be32_to_cpu(*--b);
1050
1051 temp = ~temp;
1052 c = (u64)temp + 1; // No of block can processed without overflow
1053 if ((bytes / AES_BLOCK_SIZE) >= c)
1054 bytes = c * AES_BLOCK_SIZE;
1055 return bytes;
1056}
1057
1058static int chcr_update_tweak(struct skcipher_request *req, u8 *iv,
1059 u32 isfinal)
1060{
1061 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
1062 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm));
1063 struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req);
1064 struct crypto_aes_ctx aes;
1065 int ret, i;
1066 u8 *key;
1067 unsigned int keylen;
1068 int round = reqctx->last_req_len / AES_BLOCK_SIZE;
1069 int round8 = round / 8;
1070
1071 memcpy(iv, reqctx->iv, AES_BLOCK_SIZE);
1072
1073 keylen = ablkctx->enckey_len / 2;
1074 key = ablkctx->key + keylen;
1075 /* For a 192 bit key remove the padded zeroes which was
1076 * added in chcr_xts_setkey
1077 */
1078 if (KEY_CONTEXT_CK_SIZE_G(ntohl(ablkctx->key_ctx_hdr))
1079 == CHCR_KEYCTX_CIPHER_KEY_SIZE_192)
1080 ret = aes_expandkey(&aes, key, keylen - 8);
1081 else
1082 ret = aes_expandkey(&aes, key, keylen);
1083 if (ret)
1084 return ret;
1085 aes_encrypt(&aes, iv, iv);
1086 for (i = 0; i < round8; i++)
1087 gf128mul_x8_ble((le128 *)iv, (le128 *)iv);
1088
1089 for (i = 0; i < (round % 8); i++)
1090 gf128mul_x_ble((le128 *)iv, (le128 *)iv);
1091
1092 if (!isfinal)
1093 aes_decrypt(&aes, iv, iv);
1094
1095 memzero_explicit(&aes, sizeof(aes));
1096 return 0;
1097}
1098
1099static int chcr_update_cipher_iv(struct skcipher_request *req,
1100 struct cpl_fw6_pld *fw6_pld, u8 *iv)
1101{
1102 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
1103 struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req);
1104 int subtype = get_cryptoalg_subtype(tfm);
1105 int ret = 0;
1106
1107 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR)
1108 ctr_add_iv(iv, req->iv, (reqctx->processed /
1109 AES_BLOCK_SIZE));
1110 else if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_RFC3686)
1111 *(__be32 *)(reqctx->iv + CTR_RFC3686_NONCE_SIZE +
1112 CTR_RFC3686_IV_SIZE) = cpu_to_be32((reqctx->processed /
1113 AES_BLOCK_SIZE) + 1);
1114 else if (subtype == CRYPTO_ALG_SUB_TYPE_XTS)
1115 ret = chcr_update_tweak(req, iv, 0);
1116 else if (subtype == CRYPTO_ALG_SUB_TYPE_CBC) {
1117 if (reqctx->op)
1118 /*Updated before sending last WR*/
1119 memcpy(iv, req->iv, AES_BLOCK_SIZE);
1120 else
1121 memcpy(iv, &fw6_pld->data[2], AES_BLOCK_SIZE);
1122 }
1123
1124 return ret;
1125
1126}
1127
1128/* We need separate function for final iv because in rfc3686 Initial counter
1129 * starts from 1 and buffer size of iv is 8 byte only which remains constant
1130 * for subsequent update requests
1131 */
1132
1133static int chcr_final_cipher_iv(struct skcipher_request *req,
1134 struct cpl_fw6_pld *fw6_pld, u8 *iv)
1135{
1136 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
1137 struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req);
1138 int subtype = get_cryptoalg_subtype(tfm);
1139 int ret = 0;
1140
1141 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR)
1142 ctr_add_iv(iv, req->iv, DIV_ROUND_UP(reqctx->processed,
1143 AES_BLOCK_SIZE));
1144 else if (subtype == CRYPTO_ALG_SUB_TYPE_XTS) {
1145 if (!reqctx->partial_req)
1146 memcpy(iv, reqctx->iv, AES_BLOCK_SIZE);
1147 else
1148 ret = chcr_update_tweak(req, iv, 1);
1149 }
1150 else if (subtype == CRYPTO_ALG_SUB_TYPE_CBC) {
1151 /*Already updated for Decrypt*/
1152 if (!reqctx->op)
1153 memcpy(iv, &fw6_pld->data[2], AES_BLOCK_SIZE);
1154
1155 }
1156 return ret;
1157
1158}
1159
1160static int chcr_handle_cipher_resp(struct skcipher_request *req,
1161 unsigned char *input, int err)
1162{
1163 struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req);
1164 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
1165 struct cpl_fw6_pld *fw6_pld = (struct cpl_fw6_pld *)input;
1166 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm));
1167 struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm));
1168 struct chcr_dev *dev = c_ctx(tfm)->dev;
1169 struct chcr_context *ctx = c_ctx(tfm);
1170 struct adapter *adap = padap(ctx->dev);
1171 struct cipher_wr_param wrparam;
1172 struct sk_buff *skb;
1173 int bytes;
1174
1175 if (err)
1176 goto unmap;
1177 if (req->cryptlen == reqctx->processed) {
1178 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev,
1179 req);
1180 err = chcr_final_cipher_iv(req, fw6_pld, req->iv);
1181 goto complete;
1182 }
1183
1184 if (!reqctx->imm) {
1185 bytes = chcr_sg_ent_in_wr(reqctx->srcsg, reqctx->dstsg, 0,
1186 CIP_SPACE_LEFT(ablkctx->enckey_len),
1187 reqctx->src_ofst, reqctx->dst_ofst);
1188 if ((bytes + reqctx->processed) >= req->cryptlen)
1189 bytes = req->cryptlen - reqctx->processed;
1190 else
1191 bytes = rounddown(bytes, 16);
1192 } else {
1193 /*CTR mode counter overfloa*/
1194 bytes = req->cryptlen - reqctx->processed;
1195 }
1196 err = chcr_update_cipher_iv(req, fw6_pld, reqctx->iv);
1197 if (err)
1198 goto unmap;
1199
1200 if (unlikely(bytes == 0)) {
1201 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev,
1202 req);
1203 memcpy(req->iv, reqctx->init_iv, IV);
1204 atomic_inc(&adap->chcr_stats.fallback);
1205 err = chcr_cipher_fallback(ablkctx->sw_cipher, req, req->iv,
1206 reqctx->op);
1207 goto complete;
1208 }
1209
1210 if (get_cryptoalg_subtype(tfm) ==
1211 CRYPTO_ALG_SUB_TYPE_CTR)
1212 bytes = adjust_ctr_overflow(reqctx->iv, bytes);
1213 wrparam.qid = u_ctx->lldi.rxq_ids[reqctx->rxqidx];
1214 wrparam.req = req;
1215 wrparam.bytes = bytes;
1216 skb = create_cipher_wr(&wrparam);
1217 if (IS_ERR(skb)) {
1218 pr_err("%s : Failed to form WR. No memory\n", __func__);
1219 err = PTR_ERR(skb);
1220 goto unmap;
1221 }
1222 skb->dev = u_ctx->lldi.ports[0];
1223 set_wr_txq(skb, CPL_PRIORITY_DATA, reqctx->txqidx);
1224 chcr_send_wr(skb);
1225 reqctx->last_req_len = bytes;
1226 reqctx->processed += bytes;
1227 if (get_cryptoalg_subtype(tfm) ==
1228 CRYPTO_ALG_SUB_TYPE_CBC && req->base.flags ==
1229 CRYPTO_TFM_REQ_MAY_SLEEP ) {
1230 complete(&ctx->cbc_aes_aio_done);
1231 }
1232 return 0;
1233unmap:
1234 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req);
1235complete:
1236 if (get_cryptoalg_subtype(tfm) ==
1237 CRYPTO_ALG_SUB_TYPE_CBC && req->base.flags ==
1238 CRYPTO_TFM_REQ_MAY_SLEEP ) {
1239 complete(&ctx->cbc_aes_aio_done);
1240 }
1241 chcr_dec_wrcount(dev);
1242 req->base.complete(&req->base, err);
1243 return err;
1244}
1245
1246static int process_cipher(struct skcipher_request *req,
1247 unsigned short qid,
1248 struct sk_buff **skb,
1249 unsigned short op_type)
1250{
1251 struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req);
1252 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
1253 unsigned int ivsize = crypto_skcipher_ivsize(tfm);
1254 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm));
1255 struct adapter *adap = padap(c_ctx(tfm)->dev);
1256 struct cipher_wr_param wrparam;
1257 int bytes, err = -EINVAL;
1258 int subtype;
1259
1260 reqctx->processed = 0;
1261 reqctx->partial_req = 0;
1262 if (!req->iv)
1263 goto error;
1264 subtype = get_cryptoalg_subtype(tfm);
1265 if ((ablkctx->enckey_len == 0) || (ivsize > AES_BLOCK_SIZE) ||
1266 (req->cryptlen == 0) ||
1267 (req->cryptlen % crypto_skcipher_blocksize(tfm))) {
1268 if (req->cryptlen == 0 && subtype != CRYPTO_ALG_SUB_TYPE_XTS)
1269 goto fallback;
1270 else if (req->cryptlen % crypto_skcipher_blocksize(tfm) &&
1271 subtype == CRYPTO_ALG_SUB_TYPE_XTS)
1272 goto fallback;
1273 pr_err("AES: Invalid value of Key Len %d nbytes %d IV Len %d\n",
1274 ablkctx->enckey_len, req->cryptlen, ivsize);
1275 goto error;
1276 }
1277
1278 err = chcr_cipher_dma_map(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req);
1279 if (err)
1280 goto error;
1281 if (req->cryptlen < (SGE_MAX_WR_LEN - (sizeof(struct chcr_wr) +
1282 AES_MIN_KEY_SIZE +
1283 sizeof(struct cpl_rx_phys_dsgl) +
1284 /*Min dsgl size*/
1285 32))) {
1286 /* Can be sent as Imm*/
1287 unsigned int dnents = 0, transhdr_len, phys_dsgl, kctx_len;
1288
1289 dnents = sg_nents_xlen(req->dst, req->cryptlen,
1290 CHCR_DST_SG_SIZE, 0);
1291 phys_dsgl = get_space_for_phys_dsgl(dnents);
1292 kctx_len = roundup(ablkctx->enckey_len, 16);
1293 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, phys_dsgl);
1294 reqctx->imm = (transhdr_len + IV + req->cryptlen) <=
1295 SGE_MAX_WR_LEN;
1296 bytes = IV + req->cryptlen;
1297
1298 } else {
1299 reqctx->imm = 0;
1300 }
1301
1302 if (!reqctx->imm) {
1303 bytes = chcr_sg_ent_in_wr(req->src, req->dst, 0,
1304 CIP_SPACE_LEFT(ablkctx->enckey_len),
1305 0, 0);
1306 if ((bytes + reqctx->processed) >= req->cryptlen)
1307 bytes = req->cryptlen - reqctx->processed;
1308 else
1309 bytes = rounddown(bytes, 16);
1310 } else {
1311 bytes = req->cryptlen;
1312 }
1313 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR) {
1314 bytes = adjust_ctr_overflow(req->iv, bytes);
1315 }
1316 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_RFC3686) {
1317 memcpy(reqctx->iv, ablkctx->nonce, CTR_RFC3686_NONCE_SIZE);
1318 memcpy(reqctx->iv + CTR_RFC3686_NONCE_SIZE, req->iv,
1319 CTR_RFC3686_IV_SIZE);
1320
1321 /* initialize counter portion of counter block */
1322 *(__be32 *)(reqctx->iv + CTR_RFC3686_NONCE_SIZE +
1323 CTR_RFC3686_IV_SIZE) = cpu_to_be32(1);
1324 memcpy(reqctx->init_iv, reqctx->iv, IV);
1325
1326 } else {
1327
1328 memcpy(reqctx->iv, req->iv, IV);
1329 memcpy(reqctx->init_iv, req->iv, IV);
1330 }
1331 if (unlikely(bytes == 0)) {
1332 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev,
1333 req);
1334fallback: atomic_inc(&adap->chcr_stats.fallback);
1335 err = chcr_cipher_fallback(ablkctx->sw_cipher, req,
1336 subtype ==
1337 CRYPTO_ALG_SUB_TYPE_CTR_RFC3686 ?
1338 reqctx->iv : req->iv,
1339 op_type);
1340 goto error;
1341 }
1342 reqctx->op = op_type;
1343 reqctx->srcsg = req->src;
1344 reqctx->dstsg = req->dst;
1345 reqctx->src_ofst = 0;
1346 reqctx->dst_ofst = 0;
1347 wrparam.qid = qid;
1348 wrparam.req = req;
1349 wrparam.bytes = bytes;
1350 *skb = create_cipher_wr(&wrparam);
1351 if (IS_ERR(*skb)) {
1352 err = PTR_ERR(*skb);
1353 goto unmap;
1354 }
1355 reqctx->processed = bytes;
1356 reqctx->last_req_len = bytes;
1357 reqctx->partial_req = !!(req->cryptlen - reqctx->processed);
1358
1359 return 0;
1360unmap:
1361 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req);
1362error:
1363 return err;
1364}
1365
1366static int chcr_aes_encrypt(struct skcipher_request *req)
1367{
1368 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
1369 struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req);
1370 struct chcr_dev *dev = c_ctx(tfm)->dev;
1371 struct sk_buff *skb = NULL;
1372 int err;
1373 struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm));
1374 struct chcr_context *ctx = c_ctx(tfm);
1375 unsigned int cpu;
1376
1377 cpu = get_cpu();
1378 reqctx->txqidx = cpu % ctx->ntxq;
1379 reqctx->rxqidx = cpu % ctx->nrxq;
1380 put_cpu();
1381
1382 err = chcr_inc_wrcount(dev);
1383 if (err)
1384 return -ENXIO;
1385 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
1386 reqctx->txqidx) &&
1387 (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)))) {
1388 err = -ENOSPC;
1389 goto error;
1390 }
1391
1392 err = process_cipher(req, u_ctx->lldi.rxq_ids[reqctx->rxqidx],
1393 &skb, CHCR_ENCRYPT_OP);
1394 if (err || !skb)
1395 return err;
1396 skb->dev = u_ctx->lldi.ports[0];
1397 set_wr_txq(skb, CPL_PRIORITY_DATA, reqctx->txqidx);
1398 chcr_send_wr(skb);
1399 if (get_cryptoalg_subtype(tfm) ==
1400 CRYPTO_ALG_SUB_TYPE_CBC && req->base.flags ==
1401 CRYPTO_TFM_REQ_MAY_SLEEP ) {
1402 reqctx->partial_req = 1;
1403 wait_for_completion(&ctx->cbc_aes_aio_done);
1404 }
1405 return -EINPROGRESS;
1406error:
1407 chcr_dec_wrcount(dev);
1408 return err;
1409}
1410
1411static int chcr_aes_decrypt(struct skcipher_request *req)
1412{
1413 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
1414 struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req);
1415 struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm));
1416 struct chcr_dev *dev = c_ctx(tfm)->dev;
1417 struct sk_buff *skb = NULL;
1418 int err;
1419 struct chcr_context *ctx = c_ctx(tfm);
1420 unsigned int cpu;
1421
1422 cpu = get_cpu();
1423 reqctx->txqidx = cpu % ctx->ntxq;
1424 reqctx->rxqidx = cpu % ctx->nrxq;
1425 put_cpu();
1426
1427 err = chcr_inc_wrcount(dev);
1428 if (err)
1429 return -ENXIO;
1430
1431 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
1432 reqctx->txqidx) &&
1433 (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))))
1434 return -ENOSPC;
1435 err = process_cipher(req, u_ctx->lldi.rxq_ids[reqctx->rxqidx],
1436 &skb, CHCR_DECRYPT_OP);
1437 if (err || !skb)
1438 return err;
1439 skb->dev = u_ctx->lldi.ports[0];
1440 set_wr_txq(skb, CPL_PRIORITY_DATA, reqctx->txqidx);
1441 chcr_send_wr(skb);
1442 return -EINPROGRESS;
1443}
1444static int chcr_device_init(struct chcr_context *ctx)
1445{
1446 struct uld_ctx *u_ctx = NULL;
1447 int txq_perchan, ntxq;
1448 int err = 0, rxq_perchan;
1449
1450 if (!ctx->dev) {
1451 u_ctx = assign_chcr_device();
1452 if (!u_ctx) {
1453 err = -ENXIO;
1454 pr_err("chcr device assignment fails\n");
1455 goto out;
1456 }
1457 ctx->dev = &u_ctx->dev;
1458 ntxq = u_ctx->lldi.ntxq;
1459 rxq_perchan = u_ctx->lldi.nrxq / u_ctx->lldi.nchan;
1460 txq_perchan = ntxq / u_ctx->lldi.nchan;
1461 ctx->ntxq = ntxq;
1462 ctx->nrxq = u_ctx->lldi.nrxq;
1463 ctx->rxq_perchan = rxq_perchan;
1464 ctx->txq_perchan = txq_perchan;
1465 }
1466out:
1467 return err;
1468}
1469
1470static int chcr_init_tfm(struct crypto_skcipher *tfm)
1471{
1472 struct skcipher_alg *alg = crypto_skcipher_alg(tfm);
1473 struct chcr_context *ctx = crypto_skcipher_ctx(tfm);
1474 struct ablk_ctx *ablkctx = ABLK_CTX(ctx);
1475
1476 ablkctx->sw_cipher = crypto_alloc_skcipher(alg->base.cra_name, 0,
1477 CRYPTO_ALG_NEED_FALLBACK);
1478 if (IS_ERR(ablkctx->sw_cipher)) {
1479 pr_err("failed to allocate fallback for %s\n", alg->base.cra_name);
1480 return PTR_ERR(ablkctx->sw_cipher);
1481 }
1482 init_completion(&ctx->cbc_aes_aio_done);
1483 crypto_skcipher_set_reqsize(tfm, sizeof(struct chcr_skcipher_req_ctx) +
1484 crypto_skcipher_reqsize(ablkctx->sw_cipher));
1485
1486 return chcr_device_init(ctx);
1487}
1488
1489static int chcr_rfc3686_init(struct crypto_skcipher *tfm)
1490{
1491 struct skcipher_alg *alg = crypto_skcipher_alg(tfm);
1492 struct chcr_context *ctx = crypto_skcipher_ctx(tfm);
1493 struct ablk_ctx *ablkctx = ABLK_CTX(ctx);
1494
1495 /*RFC3686 initialises IV counter value to 1, rfc3686(ctr(aes))
1496 * cannot be used as fallback in chcr_handle_cipher_response
1497 */
1498 ablkctx->sw_cipher = crypto_alloc_skcipher("ctr(aes)", 0,
1499 CRYPTO_ALG_NEED_FALLBACK);
1500 if (IS_ERR(ablkctx->sw_cipher)) {
1501 pr_err("failed to allocate fallback for %s\n", alg->base.cra_name);
1502 return PTR_ERR(ablkctx->sw_cipher);
1503 }
1504 crypto_skcipher_set_reqsize(tfm, sizeof(struct chcr_skcipher_req_ctx) +
1505 crypto_skcipher_reqsize(ablkctx->sw_cipher));
1506 return chcr_device_init(ctx);
1507}
1508
1509
1510static void chcr_exit_tfm(struct crypto_skcipher *tfm)
1511{
1512 struct chcr_context *ctx = crypto_skcipher_ctx(tfm);
1513 struct ablk_ctx *ablkctx = ABLK_CTX(ctx);
1514
1515 crypto_free_skcipher(ablkctx->sw_cipher);
1516}
1517
1518static int get_alg_config(struct algo_param *params,
1519 unsigned int auth_size)
1520{
1521 switch (auth_size) {
1522 case SHA1_DIGEST_SIZE:
1523 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_160;
1524 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA1;
1525 params->result_size = SHA1_DIGEST_SIZE;
1526 break;
1527 case SHA224_DIGEST_SIZE:
1528 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256;
1529 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA224;
1530 params->result_size = SHA256_DIGEST_SIZE;
1531 break;
1532 case SHA256_DIGEST_SIZE:
1533 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256;
1534 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA256;
1535 params->result_size = SHA256_DIGEST_SIZE;
1536 break;
1537 case SHA384_DIGEST_SIZE:
1538 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_512;
1539 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA512_384;
1540 params->result_size = SHA512_DIGEST_SIZE;
1541 break;
1542 case SHA512_DIGEST_SIZE:
1543 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_512;
1544 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA512_512;
1545 params->result_size = SHA512_DIGEST_SIZE;
1546 break;
1547 default:
1548 pr_err("ERROR, unsupported digest size\n");
1549 return -EINVAL;
1550 }
1551 return 0;
1552}
1553
1554static inline void chcr_free_shash(struct crypto_shash *base_hash)
1555{
1556 crypto_free_shash(base_hash);
1557}
1558
1559/**
1560 * create_hash_wr - Create hash work request
1561 * @req - Cipher req base
1562 */
1563static struct sk_buff *create_hash_wr(struct ahash_request *req,
1564 struct hash_wr_param *param)
1565{
1566 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1567 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
1568 struct chcr_context *ctx = h_ctx(tfm);
1569 struct hmac_ctx *hmacctx = HMAC_CTX(ctx);
1570 struct sk_buff *skb = NULL;
1571 struct uld_ctx *u_ctx = ULD_CTX(ctx);
1572 struct chcr_wr *chcr_req;
1573 struct ulptx_sgl *ulptx;
1574 unsigned int nents = 0, transhdr_len;
1575 unsigned int temp = 0;
1576 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
1577 GFP_ATOMIC;
1578 struct adapter *adap = padap(h_ctx(tfm)->dev);
1579 int error = 0;
1580 unsigned int rx_channel_id = req_ctx->rxqidx / ctx->rxq_perchan;
1581
1582 transhdr_len = HASH_TRANSHDR_SIZE(param->kctx_len);
1583 req_ctx->hctx_wr.imm = (transhdr_len + param->bfr_len +
1584 param->sg_len) <= SGE_MAX_WR_LEN;
1585 nents = sg_nents_xlen(req_ctx->hctx_wr.srcsg, param->sg_len,
1586 CHCR_SRC_SG_SIZE, req_ctx->hctx_wr.src_ofst);
1587 nents += param->bfr_len ? 1 : 0;
1588 transhdr_len += req_ctx->hctx_wr.imm ? roundup(param->bfr_len +
1589 param->sg_len, 16) : (sgl_len(nents) * 8);
1590 transhdr_len = roundup(transhdr_len, 16);
1591
1592 skb = alloc_skb(transhdr_len, flags);
1593 if (!skb)
1594 return ERR_PTR(-ENOMEM);
1595 chcr_req = __skb_put_zero(skb, transhdr_len);
1596
1597 chcr_req->sec_cpl.op_ivinsrtofst =
1598 FILL_SEC_CPL_OP_IVINSR(rx_channel_id, 2, 0);
1599
1600 chcr_req->sec_cpl.pldlen = htonl(param->bfr_len + param->sg_len);
1601
1602 chcr_req->sec_cpl.aadstart_cipherstop_hi =
1603 FILL_SEC_CPL_CIPHERSTOP_HI(0, 0, 0, 0);
1604 chcr_req->sec_cpl.cipherstop_lo_authinsert =
1605 FILL_SEC_CPL_AUTHINSERT(0, 1, 0, 0);
1606 chcr_req->sec_cpl.seqno_numivs =
1607 FILL_SEC_CPL_SCMD0_SEQNO(0, 0, 0, param->alg_prm.auth_mode,
1608 param->opad_needed, 0);
1609
1610 chcr_req->sec_cpl.ivgen_hdrlen =
1611 FILL_SEC_CPL_IVGEN_HDRLEN(param->last, param->more, 0, 1, 0, 0);
1612
1613 memcpy(chcr_req->key_ctx.key, req_ctx->partial_hash,
1614 param->alg_prm.result_size);
1615
1616 if (param->opad_needed)
1617 memcpy(chcr_req->key_ctx.key +
1618 ((param->alg_prm.result_size <= 32) ? 32 :
1619 CHCR_HASH_MAX_DIGEST_SIZE),
1620 hmacctx->opad, param->alg_prm.result_size);
1621
1622 chcr_req->key_ctx.ctx_hdr = FILL_KEY_CTX_HDR(CHCR_KEYCTX_NO_KEY,
1623 param->alg_prm.mk_size, 0,
1624 param->opad_needed,
1625 ((param->kctx_len +
1626 sizeof(chcr_req->key_ctx)) >> 4));
1627 chcr_req->sec_cpl.scmd1 = cpu_to_be64((u64)param->scmd1);
1628 ulptx = (struct ulptx_sgl *)((u8 *)(chcr_req + 1) + param->kctx_len +
1629 DUMMY_BYTES);
1630 if (param->bfr_len != 0) {
1631 req_ctx->hctx_wr.dma_addr =
1632 dma_map_single(&u_ctx->lldi.pdev->dev, req_ctx->reqbfr,
1633 param->bfr_len, DMA_TO_DEVICE);
1634 if (dma_mapping_error(&u_ctx->lldi.pdev->dev,
1635 req_ctx->hctx_wr. dma_addr)) {
1636 error = -ENOMEM;
1637 goto err;
1638 }
1639 req_ctx->hctx_wr.dma_len = param->bfr_len;
1640 } else {
1641 req_ctx->hctx_wr.dma_addr = 0;
1642 }
1643 chcr_add_hash_src_ent(req, ulptx, param);
1644 /* Request upto max wr size */
1645 temp = param->kctx_len + DUMMY_BYTES + (req_ctx->hctx_wr.imm ?
1646 (param->sg_len + param->bfr_len) : 0);
1647 atomic_inc(&adap->chcr_stats.digest_rqst);
1648 create_wreq(h_ctx(tfm), chcr_req, &req->base, req_ctx->hctx_wr.imm,
1649 param->hash_size, transhdr_len,
1650 temp, 0);
1651 req_ctx->hctx_wr.skb = skb;
1652 return skb;
1653err:
1654 kfree_skb(skb);
1655 return ERR_PTR(error);
1656}
1657
1658static int chcr_ahash_update(struct ahash_request *req)
1659{
1660 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1661 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
1662 struct uld_ctx *u_ctx = ULD_CTX(h_ctx(rtfm));
1663 struct chcr_context *ctx = h_ctx(rtfm);
1664 struct chcr_dev *dev = h_ctx(rtfm)->dev;
1665 struct sk_buff *skb;
1666 u8 remainder = 0, bs;
1667 unsigned int nbytes = req->nbytes;
1668 struct hash_wr_param params;
1669 int error;
1670 unsigned int cpu;
1671
1672 cpu = get_cpu();
1673 req_ctx->txqidx = cpu % ctx->ntxq;
1674 req_ctx->rxqidx = cpu % ctx->nrxq;
1675 put_cpu();
1676
1677 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1678
1679 if (nbytes + req_ctx->reqlen >= bs) {
1680 remainder = (nbytes + req_ctx->reqlen) % bs;
1681 nbytes = nbytes + req_ctx->reqlen - remainder;
1682 } else {
1683 sg_pcopy_to_buffer(req->src, sg_nents(req->src), req_ctx->reqbfr
1684 + req_ctx->reqlen, nbytes, 0);
1685 req_ctx->reqlen += nbytes;
1686 return 0;
1687 }
1688 error = chcr_inc_wrcount(dev);
1689 if (error)
1690 return -ENXIO;
1691 /* Detach state for CHCR means lldi or padap is freed. Increasing
1692 * inflight count for dev guarantees that lldi and padap is valid
1693 */
1694 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
1695 req_ctx->txqidx) &&
1696 (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)))) {
1697 error = -ENOSPC;
1698 goto err;
1699 }
1700
1701 chcr_init_hctx_per_wr(req_ctx);
1702 error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req);
1703 if (error) {
1704 error = -ENOMEM;
1705 goto err;
1706 }
1707 get_alg_config(¶ms.alg_prm, crypto_ahash_digestsize(rtfm));
1708 params.kctx_len = roundup(params.alg_prm.result_size, 16);
1709 params.sg_len = chcr_hash_ent_in_wr(req->src, !!req_ctx->reqlen,
1710 HASH_SPACE_LEFT(params.kctx_len), 0);
1711 if (params.sg_len > req->nbytes)
1712 params.sg_len = req->nbytes;
1713 params.sg_len = rounddown(params.sg_len + req_ctx->reqlen, bs) -
1714 req_ctx->reqlen;
1715 params.opad_needed = 0;
1716 params.more = 1;
1717 params.last = 0;
1718 params.bfr_len = req_ctx->reqlen;
1719 params.scmd1 = 0;
1720 req_ctx->hctx_wr.srcsg = req->src;
1721
1722 params.hash_size = params.alg_prm.result_size;
1723 req_ctx->data_len += params.sg_len + params.bfr_len;
1724 skb = create_hash_wr(req, ¶ms);
1725 if (IS_ERR(skb)) {
1726 error = PTR_ERR(skb);
1727 goto unmap;
1728 }
1729
1730 req_ctx->hctx_wr.processed += params.sg_len;
1731 if (remainder) {
1732 /* Swap buffers */
1733 swap(req_ctx->reqbfr, req_ctx->skbfr);
1734 sg_pcopy_to_buffer(req->src, sg_nents(req->src),
1735 req_ctx->reqbfr, remainder, req->nbytes -
1736 remainder);
1737 }
1738 req_ctx->reqlen = remainder;
1739 skb->dev = u_ctx->lldi.ports[0];
1740 set_wr_txq(skb, CPL_PRIORITY_DATA, req_ctx->txqidx);
1741 chcr_send_wr(skb);
1742 return -EINPROGRESS;
1743unmap:
1744 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
1745err:
1746 chcr_dec_wrcount(dev);
1747 return error;
1748}
1749
1750static void create_last_hash_block(char *bfr_ptr, unsigned int bs, u64 scmd1)
1751{
1752 memset(bfr_ptr, 0, bs);
1753 *bfr_ptr = 0x80;
1754 if (bs == 64)
1755 *(__be64 *)(bfr_ptr + 56) = cpu_to_be64(scmd1 << 3);
1756 else
1757 *(__be64 *)(bfr_ptr + 120) = cpu_to_be64(scmd1 << 3);
1758}
1759
1760static int chcr_ahash_final(struct ahash_request *req)
1761{
1762 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1763 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
1764 struct chcr_dev *dev = h_ctx(rtfm)->dev;
1765 struct hash_wr_param params;
1766 struct sk_buff *skb;
1767 struct uld_ctx *u_ctx = ULD_CTX(h_ctx(rtfm));
1768 struct chcr_context *ctx = h_ctx(rtfm);
1769 u8 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1770 int error;
1771 unsigned int cpu;
1772
1773 cpu = get_cpu();
1774 req_ctx->txqidx = cpu % ctx->ntxq;
1775 req_ctx->rxqidx = cpu % ctx->nrxq;
1776 put_cpu();
1777
1778 error = chcr_inc_wrcount(dev);
1779 if (error)
1780 return -ENXIO;
1781
1782 chcr_init_hctx_per_wr(req_ctx);
1783 if (is_hmac(crypto_ahash_tfm(rtfm)))
1784 params.opad_needed = 1;
1785 else
1786 params.opad_needed = 0;
1787 params.sg_len = 0;
1788 req_ctx->hctx_wr.isfinal = 1;
1789 get_alg_config(¶ms.alg_prm, crypto_ahash_digestsize(rtfm));
1790 params.kctx_len = roundup(params.alg_prm.result_size, 16);
1791 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1792 params.opad_needed = 1;
1793 params.kctx_len *= 2;
1794 } else {
1795 params.opad_needed = 0;
1796 }
1797
1798 req_ctx->hctx_wr.result = 1;
1799 params.bfr_len = req_ctx->reqlen;
1800 req_ctx->data_len += params.bfr_len + params.sg_len;
1801 req_ctx->hctx_wr.srcsg = req->src;
1802 if (req_ctx->reqlen == 0) {
1803 create_last_hash_block(req_ctx->reqbfr, bs, req_ctx->data_len);
1804 params.last = 0;
1805 params.more = 1;
1806 params.scmd1 = 0;
1807 params.bfr_len = bs;
1808
1809 } else {
1810 params.scmd1 = req_ctx->data_len;
1811 params.last = 1;
1812 params.more = 0;
1813 }
1814 params.hash_size = crypto_ahash_digestsize(rtfm);
1815 skb = create_hash_wr(req, ¶ms);
1816 if (IS_ERR(skb)) {
1817 error = PTR_ERR(skb);
1818 goto err;
1819 }
1820 req_ctx->reqlen = 0;
1821 skb->dev = u_ctx->lldi.ports[0];
1822 set_wr_txq(skb, CPL_PRIORITY_DATA, req_ctx->txqidx);
1823 chcr_send_wr(skb);
1824 return -EINPROGRESS;
1825err:
1826 chcr_dec_wrcount(dev);
1827 return error;
1828}
1829
1830static int chcr_ahash_finup(struct ahash_request *req)
1831{
1832 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1833 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
1834 struct chcr_dev *dev = h_ctx(rtfm)->dev;
1835 struct uld_ctx *u_ctx = ULD_CTX(h_ctx(rtfm));
1836 struct chcr_context *ctx = h_ctx(rtfm);
1837 struct sk_buff *skb;
1838 struct hash_wr_param params;
1839 u8 bs;
1840 int error;
1841 unsigned int cpu;
1842
1843 cpu = get_cpu();
1844 req_ctx->txqidx = cpu % ctx->ntxq;
1845 req_ctx->rxqidx = cpu % ctx->nrxq;
1846 put_cpu();
1847
1848 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1849 error = chcr_inc_wrcount(dev);
1850 if (error)
1851 return -ENXIO;
1852
1853 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
1854 req_ctx->txqidx) &&
1855 (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)))) {
1856 error = -ENOSPC;
1857 goto err;
1858 }
1859 chcr_init_hctx_per_wr(req_ctx);
1860 error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req);
1861 if (error) {
1862 error = -ENOMEM;
1863 goto err;
1864 }
1865
1866 get_alg_config(¶ms.alg_prm, crypto_ahash_digestsize(rtfm));
1867 params.kctx_len = roundup(params.alg_prm.result_size, 16);
1868 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1869 params.kctx_len *= 2;
1870 params.opad_needed = 1;
1871 } else {
1872 params.opad_needed = 0;
1873 }
1874
1875 params.sg_len = chcr_hash_ent_in_wr(req->src, !!req_ctx->reqlen,
1876 HASH_SPACE_LEFT(params.kctx_len), 0);
1877 if (params.sg_len < req->nbytes) {
1878 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1879 params.kctx_len /= 2;
1880 params.opad_needed = 0;
1881 }
1882 params.last = 0;
1883 params.more = 1;
1884 params.sg_len = rounddown(params.sg_len + req_ctx->reqlen, bs)
1885 - req_ctx->reqlen;
1886 params.hash_size = params.alg_prm.result_size;
1887 params.scmd1 = 0;
1888 } else {
1889 params.last = 1;
1890 params.more = 0;
1891 params.sg_len = req->nbytes;
1892 params.hash_size = crypto_ahash_digestsize(rtfm);
1893 params.scmd1 = req_ctx->data_len + req_ctx->reqlen +
1894 params.sg_len;
1895 }
1896 params.bfr_len = req_ctx->reqlen;
1897 req_ctx->data_len += params.bfr_len + params.sg_len;
1898 req_ctx->hctx_wr.result = 1;
1899 req_ctx->hctx_wr.srcsg = req->src;
1900 if ((req_ctx->reqlen + req->nbytes) == 0) {
1901 create_last_hash_block(req_ctx->reqbfr, bs, req_ctx->data_len);
1902 params.last = 0;
1903 params.more = 1;
1904 params.scmd1 = 0;
1905 params.bfr_len = bs;
1906 }
1907 skb = create_hash_wr(req, ¶ms);
1908 if (IS_ERR(skb)) {
1909 error = PTR_ERR(skb);
1910 goto unmap;
1911 }
1912 req_ctx->reqlen = 0;
1913 req_ctx->hctx_wr.processed += params.sg_len;
1914 skb->dev = u_ctx->lldi.ports[0];
1915 set_wr_txq(skb, CPL_PRIORITY_DATA, req_ctx->txqidx);
1916 chcr_send_wr(skb);
1917 return -EINPROGRESS;
1918unmap:
1919 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
1920err:
1921 chcr_dec_wrcount(dev);
1922 return error;
1923}
1924
1925static int chcr_ahash_digest(struct ahash_request *req)
1926{
1927 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1928 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
1929 struct chcr_dev *dev = h_ctx(rtfm)->dev;
1930 struct uld_ctx *u_ctx = ULD_CTX(h_ctx(rtfm));
1931 struct chcr_context *ctx = h_ctx(rtfm);
1932 struct sk_buff *skb;
1933 struct hash_wr_param params;
1934 u8 bs;
1935 int error;
1936 unsigned int cpu;
1937
1938 cpu = get_cpu();
1939 req_ctx->txqidx = cpu % ctx->ntxq;
1940 req_ctx->rxqidx = cpu % ctx->nrxq;
1941 put_cpu();
1942
1943 rtfm->init(req);
1944 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1945 error = chcr_inc_wrcount(dev);
1946 if (error)
1947 return -ENXIO;
1948
1949 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
1950 req_ctx->txqidx) &&
1951 (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)))) {
1952 error = -ENOSPC;
1953 goto err;
1954 }
1955
1956 chcr_init_hctx_per_wr(req_ctx);
1957 error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req);
1958 if (error) {
1959 error = -ENOMEM;
1960 goto err;
1961 }
1962
1963 get_alg_config(¶ms.alg_prm, crypto_ahash_digestsize(rtfm));
1964 params.kctx_len = roundup(params.alg_prm.result_size, 16);
1965 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1966 params.kctx_len *= 2;
1967 params.opad_needed = 1;
1968 } else {
1969 params.opad_needed = 0;
1970 }
1971 params.sg_len = chcr_hash_ent_in_wr(req->src, !!req_ctx->reqlen,
1972 HASH_SPACE_LEFT(params.kctx_len), 0);
1973 if (params.sg_len < req->nbytes) {
1974 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1975 params.kctx_len /= 2;
1976 params.opad_needed = 0;
1977 }
1978 params.last = 0;
1979 params.more = 1;
1980 params.scmd1 = 0;
1981 params.sg_len = rounddown(params.sg_len, bs);
1982 params.hash_size = params.alg_prm.result_size;
1983 } else {
1984 params.sg_len = req->nbytes;
1985 params.hash_size = crypto_ahash_digestsize(rtfm);
1986 params.last = 1;
1987 params.more = 0;
1988 params.scmd1 = req->nbytes + req_ctx->data_len;
1989
1990 }
1991 params.bfr_len = 0;
1992 req_ctx->hctx_wr.result = 1;
1993 req_ctx->hctx_wr.srcsg = req->src;
1994 req_ctx->data_len += params.bfr_len + params.sg_len;
1995
1996 if (req->nbytes == 0) {
1997 create_last_hash_block(req_ctx->reqbfr, bs, req_ctx->data_len);
1998 params.more = 1;
1999 params.bfr_len = bs;
2000 }
2001
2002 skb = create_hash_wr(req, ¶ms);
2003 if (IS_ERR(skb)) {
2004 error = PTR_ERR(skb);
2005 goto unmap;
2006 }
2007 req_ctx->hctx_wr.processed += params.sg_len;
2008 skb->dev = u_ctx->lldi.ports[0];
2009 set_wr_txq(skb, CPL_PRIORITY_DATA, req_ctx->txqidx);
2010 chcr_send_wr(skb);
2011 return -EINPROGRESS;
2012unmap:
2013 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
2014err:
2015 chcr_dec_wrcount(dev);
2016 return error;
2017}
2018
2019static int chcr_ahash_continue(struct ahash_request *req)
2020{
2021 struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req);
2022 struct chcr_hctx_per_wr *hctx_wr = &reqctx->hctx_wr;
2023 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
2024 struct chcr_context *ctx = h_ctx(rtfm);
2025 struct uld_ctx *u_ctx = ULD_CTX(ctx);
2026 struct sk_buff *skb;
2027 struct hash_wr_param params;
2028 u8 bs;
2029 int error;
2030 unsigned int cpu;
2031
2032 cpu = get_cpu();
2033 reqctx->txqidx = cpu % ctx->ntxq;
2034 reqctx->rxqidx = cpu % ctx->nrxq;
2035 put_cpu();
2036
2037 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
2038 get_alg_config(¶ms.alg_prm, crypto_ahash_digestsize(rtfm));
2039 params.kctx_len = roundup(params.alg_prm.result_size, 16);
2040 if (is_hmac(crypto_ahash_tfm(rtfm))) {
2041 params.kctx_len *= 2;
2042 params.opad_needed = 1;
2043 } else {
2044 params.opad_needed = 0;
2045 }
2046 params.sg_len = chcr_hash_ent_in_wr(hctx_wr->srcsg, 0,
2047 HASH_SPACE_LEFT(params.kctx_len),
2048 hctx_wr->src_ofst);
2049 if ((params.sg_len + hctx_wr->processed) > req->nbytes)
2050 params.sg_len = req->nbytes - hctx_wr->processed;
2051 if (!hctx_wr->result ||
2052 ((params.sg_len + hctx_wr->processed) < req->nbytes)) {
2053 if (is_hmac(crypto_ahash_tfm(rtfm))) {
2054 params.kctx_len /= 2;
2055 params.opad_needed = 0;
2056 }
2057 params.last = 0;
2058 params.more = 1;
2059 params.sg_len = rounddown(params.sg_len, bs);
2060 params.hash_size = params.alg_prm.result_size;
2061 params.scmd1 = 0;
2062 } else {
2063 params.last = 1;
2064 params.more = 0;
2065 params.hash_size = crypto_ahash_digestsize(rtfm);
2066 params.scmd1 = reqctx->data_len + params.sg_len;
2067 }
2068 params.bfr_len = 0;
2069 reqctx->data_len += params.sg_len;
2070 skb = create_hash_wr(req, ¶ms);
2071 if (IS_ERR(skb)) {
2072 error = PTR_ERR(skb);
2073 goto err;
2074 }
2075 hctx_wr->processed += params.sg_len;
2076 skb->dev = u_ctx->lldi.ports[0];
2077 set_wr_txq(skb, CPL_PRIORITY_DATA, reqctx->txqidx);
2078 chcr_send_wr(skb);
2079 return 0;
2080err:
2081 return error;
2082}
2083
2084static inline void chcr_handle_ahash_resp(struct ahash_request *req,
2085 unsigned char *input,
2086 int err)
2087{
2088 struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req);
2089 struct chcr_hctx_per_wr *hctx_wr = &reqctx->hctx_wr;
2090 int digestsize, updated_digestsize;
2091 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
2092 struct uld_ctx *u_ctx = ULD_CTX(h_ctx(tfm));
2093 struct chcr_dev *dev = h_ctx(tfm)->dev;
2094
2095 if (input == NULL)
2096 goto out;
2097 digestsize = crypto_ahash_digestsize(crypto_ahash_reqtfm(req));
2098 updated_digestsize = digestsize;
2099 if (digestsize == SHA224_DIGEST_SIZE)
2100 updated_digestsize = SHA256_DIGEST_SIZE;
2101 else if (digestsize == SHA384_DIGEST_SIZE)
2102 updated_digestsize = SHA512_DIGEST_SIZE;
2103
2104 if (hctx_wr->dma_addr) {
2105 dma_unmap_single(&u_ctx->lldi.pdev->dev, hctx_wr->dma_addr,
2106 hctx_wr->dma_len, DMA_TO_DEVICE);
2107 hctx_wr->dma_addr = 0;
2108 }
2109 if (hctx_wr->isfinal || ((hctx_wr->processed + reqctx->reqlen) ==
2110 req->nbytes)) {
2111 if (hctx_wr->result == 1) {
2112 hctx_wr->result = 0;
2113 memcpy(req->result, input + sizeof(struct cpl_fw6_pld),
2114 digestsize);
2115 } else {
2116 memcpy(reqctx->partial_hash,
2117 input + sizeof(struct cpl_fw6_pld),
2118 updated_digestsize);
2119
2120 }
2121 goto unmap;
2122 }
2123 memcpy(reqctx->partial_hash, input + sizeof(struct cpl_fw6_pld),
2124 updated_digestsize);
2125
2126 err = chcr_ahash_continue(req);
2127 if (err)
2128 goto unmap;
2129 return;
2130unmap:
2131 if (hctx_wr->is_sg_map)
2132 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
2133
2134
2135out:
2136 chcr_dec_wrcount(dev);
2137 req->base.complete(&req->base, err);
2138}
2139
2140/*
2141 * chcr_handle_resp - Unmap the DMA buffers associated with the request
2142 * @req: crypto request
2143 */
2144int chcr_handle_resp(struct crypto_async_request *req, unsigned char *input,
2145 int err)
2146{
2147 struct crypto_tfm *tfm = req->tfm;
2148 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
2149 struct adapter *adap = padap(ctx->dev);
2150
2151 switch (tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK) {
2152 case CRYPTO_ALG_TYPE_AEAD:
2153 err = chcr_handle_aead_resp(aead_request_cast(req), input, err);
2154 break;
2155
2156 case CRYPTO_ALG_TYPE_SKCIPHER:
2157 chcr_handle_cipher_resp(skcipher_request_cast(req),
2158 input, err);
2159 break;
2160 case CRYPTO_ALG_TYPE_AHASH:
2161 chcr_handle_ahash_resp(ahash_request_cast(req), input, err);
2162 }
2163 atomic_inc(&adap->chcr_stats.complete);
2164 return err;
2165}
2166static int chcr_ahash_export(struct ahash_request *areq, void *out)
2167{
2168 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
2169 struct chcr_ahash_req_ctx *state = out;
2170
2171 state->reqlen = req_ctx->reqlen;
2172 state->data_len = req_ctx->data_len;
2173 memcpy(state->bfr1, req_ctx->reqbfr, req_ctx->reqlen);
2174 memcpy(state->partial_hash, req_ctx->partial_hash,
2175 CHCR_HASH_MAX_DIGEST_SIZE);
2176 chcr_init_hctx_per_wr(state);
2177 return 0;
2178}
2179
2180static int chcr_ahash_import(struct ahash_request *areq, const void *in)
2181{
2182 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
2183 struct chcr_ahash_req_ctx *state = (struct chcr_ahash_req_ctx *)in;
2184
2185 req_ctx->reqlen = state->reqlen;
2186 req_ctx->data_len = state->data_len;
2187 req_ctx->reqbfr = req_ctx->bfr1;
2188 req_ctx->skbfr = req_ctx->bfr2;
2189 memcpy(req_ctx->bfr1, state->bfr1, CHCR_HASH_MAX_BLOCK_SIZE_128);
2190 memcpy(req_ctx->partial_hash, state->partial_hash,
2191 CHCR_HASH_MAX_DIGEST_SIZE);
2192 chcr_init_hctx_per_wr(req_ctx);
2193 return 0;
2194}
2195
2196static int chcr_ahash_setkey(struct crypto_ahash *tfm, const u8 *key,
2197 unsigned int keylen)
2198{
2199 struct hmac_ctx *hmacctx = HMAC_CTX(h_ctx(tfm));
2200 unsigned int digestsize = crypto_ahash_digestsize(tfm);
2201 unsigned int bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm));
2202 unsigned int i, err = 0, updated_digestsize;
2203
2204 SHASH_DESC_ON_STACK(shash, hmacctx->base_hash);
2205
2206 /* use the key to calculate the ipad and opad. ipad will sent with the
2207 * first request's data. opad will be sent with the final hash result
2208 * ipad in hmacctx->ipad and opad in hmacctx->opad location
2209 */
2210 shash->tfm = hmacctx->base_hash;
2211 if (keylen > bs) {
2212 err = crypto_shash_digest(shash, key, keylen,
2213 hmacctx->ipad);
2214 if (err)
2215 goto out;
2216 keylen = digestsize;
2217 } else {
2218 memcpy(hmacctx->ipad, key, keylen);
2219 }
2220 memset(hmacctx->ipad + keylen, 0, bs - keylen);
2221 memcpy(hmacctx->opad, hmacctx->ipad, bs);
2222
2223 for (i = 0; i < bs / sizeof(int); i++) {
2224 *((unsigned int *)(&hmacctx->ipad) + i) ^= IPAD_DATA;
2225 *((unsigned int *)(&hmacctx->opad) + i) ^= OPAD_DATA;
2226 }
2227
2228 updated_digestsize = digestsize;
2229 if (digestsize == SHA224_DIGEST_SIZE)
2230 updated_digestsize = SHA256_DIGEST_SIZE;
2231 else if (digestsize == SHA384_DIGEST_SIZE)
2232 updated_digestsize = SHA512_DIGEST_SIZE;
2233 err = chcr_compute_partial_hash(shash, hmacctx->ipad,
2234 hmacctx->ipad, digestsize);
2235 if (err)
2236 goto out;
2237 chcr_change_order(hmacctx->ipad, updated_digestsize);
2238
2239 err = chcr_compute_partial_hash(shash, hmacctx->opad,
2240 hmacctx->opad, digestsize);
2241 if (err)
2242 goto out;
2243 chcr_change_order(hmacctx->opad, updated_digestsize);
2244out:
2245 return err;
2246}
2247
2248static int chcr_aes_xts_setkey(struct crypto_skcipher *cipher, const u8 *key,
2249 unsigned int key_len)
2250{
2251 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
2252 unsigned short context_size = 0;
2253 int err;
2254
2255 err = chcr_cipher_fallback_setkey(cipher, key, key_len);
2256 if (err)
2257 goto badkey_err;
2258
2259 memcpy(ablkctx->key, key, key_len);
2260 ablkctx->enckey_len = key_len;
2261 get_aes_decrypt_key(ablkctx->rrkey, ablkctx->key, key_len << 2);
2262 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD + key_len) >> 4;
2263 /* Both keys for xts must be aligned to 16 byte boundary
2264 * by padding with zeros. So for 24 byte keys padding 8 zeroes.
2265 */
2266 if (key_len == 48) {
2267 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD + key_len
2268 + 16) >> 4;
2269 memmove(ablkctx->key + 32, ablkctx->key + 24, 24);
2270 memset(ablkctx->key + 24, 0, 8);
2271 memset(ablkctx->key + 56, 0, 8);
2272 ablkctx->enckey_len = 64;
2273 ablkctx->key_ctx_hdr =
2274 FILL_KEY_CTX_HDR(CHCR_KEYCTX_CIPHER_KEY_SIZE_192,
2275 CHCR_KEYCTX_NO_KEY, 1,
2276 0, context_size);
2277 } else {
2278 ablkctx->key_ctx_hdr =
2279 FILL_KEY_CTX_HDR((key_len == AES_KEYSIZE_256) ?
2280 CHCR_KEYCTX_CIPHER_KEY_SIZE_128 :
2281 CHCR_KEYCTX_CIPHER_KEY_SIZE_256,
2282 CHCR_KEYCTX_NO_KEY, 1,
2283 0, context_size);
2284 }
2285 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_XTS;
2286 return 0;
2287badkey_err:
2288 ablkctx->enckey_len = 0;
2289
2290 return err;
2291}
2292
2293static int chcr_sha_init(struct ahash_request *areq)
2294{
2295 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
2296 struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
2297 int digestsize = crypto_ahash_digestsize(tfm);
2298
2299 req_ctx->data_len = 0;
2300 req_ctx->reqlen = 0;
2301 req_ctx->reqbfr = req_ctx->bfr1;
2302 req_ctx->skbfr = req_ctx->bfr2;
2303 copy_hash_init_values(req_ctx->partial_hash, digestsize);
2304
2305 return 0;
2306}
2307
2308static int chcr_sha_cra_init(struct crypto_tfm *tfm)
2309{
2310 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
2311 sizeof(struct chcr_ahash_req_ctx));
2312 return chcr_device_init(crypto_tfm_ctx(tfm));
2313}
2314
2315static int chcr_hmac_init(struct ahash_request *areq)
2316{
2317 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
2318 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(areq);
2319 struct hmac_ctx *hmacctx = HMAC_CTX(h_ctx(rtfm));
2320 unsigned int digestsize = crypto_ahash_digestsize(rtfm);
2321 unsigned int bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
2322
2323 chcr_sha_init(areq);
2324 req_ctx->data_len = bs;
2325 if (is_hmac(crypto_ahash_tfm(rtfm))) {
2326 if (digestsize == SHA224_DIGEST_SIZE)
2327 memcpy(req_ctx->partial_hash, hmacctx->ipad,
2328 SHA256_DIGEST_SIZE);
2329 else if (digestsize == SHA384_DIGEST_SIZE)
2330 memcpy(req_ctx->partial_hash, hmacctx->ipad,
2331 SHA512_DIGEST_SIZE);
2332 else
2333 memcpy(req_ctx->partial_hash, hmacctx->ipad,
2334 digestsize);
2335 }
2336 return 0;
2337}
2338
2339static int chcr_hmac_cra_init(struct crypto_tfm *tfm)
2340{
2341 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
2342 struct hmac_ctx *hmacctx = HMAC_CTX(ctx);
2343 unsigned int digestsize =
2344 crypto_ahash_digestsize(__crypto_ahash_cast(tfm));
2345
2346 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
2347 sizeof(struct chcr_ahash_req_ctx));
2348 hmacctx->base_hash = chcr_alloc_shash(digestsize);
2349 if (IS_ERR(hmacctx->base_hash))
2350 return PTR_ERR(hmacctx->base_hash);
2351 return chcr_device_init(crypto_tfm_ctx(tfm));
2352}
2353
2354static void chcr_hmac_cra_exit(struct crypto_tfm *tfm)
2355{
2356 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
2357 struct hmac_ctx *hmacctx = HMAC_CTX(ctx);
2358
2359 if (hmacctx->base_hash) {
2360 chcr_free_shash(hmacctx->base_hash);
2361 hmacctx->base_hash = NULL;
2362 }
2363}
2364
2365inline void chcr_aead_common_exit(struct aead_request *req)
2366{
2367 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2368 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2369 struct uld_ctx *u_ctx = ULD_CTX(a_ctx(tfm));
2370
2371 chcr_aead_dma_unmap(&u_ctx->lldi.pdev->dev, req, reqctx->op);
2372}
2373
2374static int chcr_aead_common_init(struct aead_request *req)
2375{
2376 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2377 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2378 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2379 unsigned int authsize = crypto_aead_authsize(tfm);
2380 int error = -EINVAL;
2381
2382 /* validate key size */
2383 if (aeadctx->enckey_len == 0)
2384 goto err;
2385 if (reqctx->op && req->cryptlen < authsize)
2386 goto err;
2387 if (reqctx->b0_len)
2388 reqctx->scratch_pad = reqctx->iv + IV;
2389 else
2390 reqctx->scratch_pad = NULL;
2391
2392 error = chcr_aead_dma_map(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev, req,
2393 reqctx->op);
2394 if (error) {
2395 error = -ENOMEM;
2396 goto err;
2397 }
2398
2399 return 0;
2400err:
2401 return error;
2402}
2403
2404static int chcr_aead_need_fallback(struct aead_request *req, int dst_nents,
2405 int aadmax, int wrlen,
2406 unsigned short op_type)
2407{
2408 unsigned int authsize = crypto_aead_authsize(crypto_aead_reqtfm(req));
2409
2410 if (((req->cryptlen - (op_type ? authsize : 0)) == 0) ||
2411 dst_nents > MAX_DSGL_ENT ||
2412 (req->assoclen > aadmax) ||
2413 (wrlen > SGE_MAX_WR_LEN))
2414 return 1;
2415 return 0;
2416}
2417
2418static int chcr_aead_fallback(struct aead_request *req, unsigned short op_type)
2419{
2420 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2421 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2422 struct aead_request *subreq = aead_request_ctx(req);
2423
2424 aead_request_set_tfm(subreq, aeadctx->sw_cipher);
2425 aead_request_set_callback(subreq, req->base.flags,
2426 req->base.complete, req->base.data);
2427 aead_request_set_crypt(subreq, req->src, req->dst, req->cryptlen,
2428 req->iv);
2429 aead_request_set_ad(subreq, req->assoclen);
2430 return op_type ? crypto_aead_decrypt(subreq) :
2431 crypto_aead_encrypt(subreq);
2432}
2433
2434static struct sk_buff *create_authenc_wr(struct aead_request *req,
2435 unsigned short qid,
2436 int size)
2437{
2438 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2439 struct chcr_context *ctx = a_ctx(tfm);
2440 struct chcr_aead_ctx *aeadctx = AEAD_CTX(ctx);
2441 struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx);
2442 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2443 struct sk_buff *skb = NULL;
2444 struct chcr_wr *chcr_req;
2445 struct cpl_rx_phys_dsgl *phys_cpl;
2446 struct ulptx_sgl *ulptx;
2447 unsigned int transhdr_len;
2448 unsigned int dst_size = 0, temp, subtype = get_aead_subtype(tfm);
2449 unsigned int kctx_len = 0, dnents, snents;
2450 unsigned int authsize = crypto_aead_authsize(tfm);
2451 int error = -EINVAL;
2452 u8 *ivptr;
2453 int null = 0;
2454 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
2455 GFP_ATOMIC;
2456 struct adapter *adap = padap(ctx->dev);
2457 unsigned int rx_channel_id = reqctx->rxqidx / ctx->rxq_perchan;
2458
2459 if (req->cryptlen == 0)
2460 return NULL;
2461
2462 reqctx->b0_len = 0;
2463 error = chcr_aead_common_init(req);
2464 if (error)
2465 return ERR_PTR(error);
2466
2467 if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL ||
2468 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
2469 null = 1;
2470 }
2471 dnents = sg_nents_xlen(req->dst, req->assoclen + req->cryptlen +
2472 (reqctx->op ? -authsize : authsize), CHCR_DST_SG_SIZE, 0);
2473 dnents += MIN_AUTH_SG; // For IV
2474 snents = sg_nents_xlen(req->src, req->assoclen + req->cryptlen,
2475 CHCR_SRC_SG_SIZE, 0);
2476 dst_size = get_space_for_phys_dsgl(dnents);
2477 kctx_len = (KEY_CONTEXT_CTX_LEN_G(ntohl(aeadctx->key_ctx_hdr)) << 4)
2478 - sizeof(chcr_req->key_ctx);
2479 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
2480 reqctx->imm = (transhdr_len + req->assoclen + req->cryptlen) <
2481 SGE_MAX_WR_LEN;
2482 temp = reqctx->imm ? roundup(req->assoclen + req->cryptlen, 16)
2483 : (sgl_len(snents) * 8);
2484 transhdr_len += temp;
2485 transhdr_len = roundup(transhdr_len, 16);
2486
2487 if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE,
2488 transhdr_len, reqctx->op)) {
2489 atomic_inc(&adap->chcr_stats.fallback);
2490 chcr_aead_common_exit(req);
2491 return ERR_PTR(chcr_aead_fallback(req, reqctx->op));
2492 }
2493 skb = alloc_skb(transhdr_len, flags);
2494 if (!skb) {
2495 error = -ENOMEM;
2496 goto err;
2497 }
2498
2499 chcr_req = __skb_put_zero(skb, transhdr_len);
2500
2501 temp = (reqctx->op == CHCR_ENCRYPT_OP) ? 0 : authsize;
2502
2503 /*
2504 * Input order is AAD,IV and Payload. where IV should be included as
2505 * the part of authdata. All other fields should be filled according
2506 * to the hardware spec
2507 */
2508 chcr_req->sec_cpl.op_ivinsrtofst =
2509 FILL_SEC_CPL_OP_IVINSR(rx_channel_id, 2, 1);
2510 chcr_req->sec_cpl.pldlen = htonl(req->assoclen + IV + req->cryptlen);
2511 chcr_req->sec_cpl.aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI(
2512 null ? 0 : 1 + IV,
2513 null ? 0 : IV + req->assoclen,
2514 req->assoclen + IV + 1,
2515 (temp & 0x1F0) >> 4);
2516 chcr_req->sec_cpl.cipherstop_lo_authinsert = FILL_SEC_CPL_AUTHINSERT(
2517 temp & 0xF,
2518 null ? 0 : req->assoclen + IV + 1,
2519 temp, temp);
2520 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL ||
2521 subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA)
2522 temp = CHCR_SCMD_CIPHER_MODE_AES_CTR;
2523 else
2524 temp = CHCR_SCMD_CIPHER_MODE_AES_CBC;
2525 chcr_req->sec_cpl.seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(reqctx->op,
2526 (reqctx->op == CHCR_ENCRYPT_OP) ? 1 : 0,
2527 temp,
2528 actx->auth_mode, aeadctx->hmac_ctrl,
2529 IV >> 1);
2530 chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1,
2531 0, 0, dst_size);
2532
2533 chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr;
2534 if (reqctx->op == CHCR_ENCRYPT_OP ||
2535 subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
2536 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL)
2537 memcpy(chcr_req->key_ctx.key, aeadctx->key,
2538 aeadctx->enckey_len);
2539 else
2540 memcpy(chcr_req->key_ctx.key, actx->dec_rrkey,
2541 aeadctx->enckey_len);
2542
2543 memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16),
2544 actx->h_iopad, kctx_len - roundup(aeadctx->enckey_len, 16));
2545 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
2546 ivptr = (u8 *)(phys_cpl + 1) + dst_size;
2547 ulptx = (struct ulptx_sgl *)(ivptr + IV);
2548 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
2549 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
2550 memcpy(ivptr, aeadctx->nonce, CTR_RFC3686_NONCE_SIZE);
2551 memcpy(ivptr + CTR_RFC3686_NONCE_SIZE, req->iv,
2552 CTR_RFC3686_IV_SIZE);
2553 *(__be32 *)(ivptr + CTR_RFC3686_NONCE_SIZE +
2554 CTR_RFC3686_IV_SIZE) = cpu_to_be32(1);
2555 } else {
2556 memcpy(ivptr, req->iv, IV);
2557 }
2558 chcr_add_aead_dst_ent(req, phys_cpl, qid);
2559 chcr_add_aead_src_ent(req, ulptx);
2560 atomic_inc(&adap->chcr_stats.cipher_rqst);
2561 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + IV +
2562 kctx_len + (reqctx->imm ? (req->assoclen + req->cryptlen) : 0);
2563 create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, size,
2564 transhdr_len, temp, 0);
2565 reqctx->skb = skb;
2566
2567 return skb;
2568err:
2569 chcr_aead_common_exit(req);
2570
2571 return ERR_PTR(error);
2572}
2573
2574int chcr_aead_dma_map(struct device *dev,
2575 struct aead_request *req,
2576 unsigned short op_type)
2577{
2578 int error;
2579 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2580 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2581 unsigned int authsize = crypto_aead_authsize(tfm);
2582 int src_len, dst_len;
2583
2584 /* calculate and handle src and dst sg length separately
2585 * for inplace and out-of place operations
2586 */
2587 if (req->src == req->dst) {
2588 src_len = req->assoclen + req->cryptlen + (op_type ?
2589 0 : authsize);
2590 dst_len = src_len;
2591 } else {
2592 src_len = req->assoclen + req->cryptlen;
2593 dst_len = req->assoclen + req->cryptlen + (op_type ?
2594 -authsize : authsize);
2595 }
2596
2597 if (!req->cryptlen || !src_len || !dst_len)
2598 return 0;
2599 reqctx->iv_dma = dma_map_single(dev, reqctx->iv, (IV + reqctx->b0_len),
2600 DMA_BIDIRECTIONAL);
2601 if (dma_mapping_error(dev, reqctx->iv_dma))
2602 return -ENOMEM;
2603 if (reqctx->b0_len)
2604 reqctx->b0_dma = reqctx->iv_dma + IV;
2605 else
2606 reqctx->b0_dma = 0;
2607 if (req->src == req->dst) {
2608 error = dma_map_sg(dev, req->src,
2609 sg_nents_for_len(req->src, src_len),
2610 DMA_BIDIRECTIONAL);
2611 if (!error)
2612 goto err;
2613 } else {
2614 error = dma_map_sg(dev, req->src,
2615 sg_nents_for_len(req->src, src_len),
2616 DMA_TO_DEVICE);
2617 if (!error)
2618 goto err;
2619 error = dma_map_sg(dev, req->dst,
2620 sg_nents_for_len(req->dst, dst_len),
2621 DMA_FROM_DEVICE);
2622 if (!error) {
2623 dma_unmap_sg(dev, req->src,
2624 sg_nents_for_len(req->src, src_len),
2625 DMA_TO_DEVICE);
2626 goto err;
2627 }
2628 }
2629
2630 return 0;
2631err:
2632 dma_unmap_single(dev, reqctx->iv_dma, IV, DMA_BIDIRECTIONAL);
2633 return -ENOMEM;
2634}
2635
2636void chcr_aead_dma_unmap(struct device *dev,
2637 struct aead_request *req,
2638 unsigned short op_type)
2639{
2640 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2641 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2642 unsigned int authsize = crypto_aead_authsize(tfm);
2643 int src_len, dst_len;
2644
2645 /* calculate and handle src and dst sg length separately
2646 * for inplace and out-of place operations
2647 */
2648 if (req->src == req->dst) {
2649 src_len = req->assoclen + req->cryptlen + (op_type ?
2650 0 : authsize);
2651 dst_len = src_len;
2652 } else {
2653 src_len = req->assoclen + req->cryptlen;
2654 dst_len = req->assoclen + req->cryptlen + (op_type ?
2655 -authsize : authsize);
2656 }
2657
2658 if (!req->cryptlen || !src_len || !dst_len)
2659 return;
2660
2661 dma_unmap_single(dev, reqctx->iv_dma, (IV + reqctx->b0_len),
2662 DMA_BIDIRECTIONAL);
2663 if (req->src == req->dst) {
2664 dma_unmap_sg(dev, req->src,
2665 sg_nents_for_len(req->src, src_len),
2666 DMA_BIDIRECTIONAL);
2667 } else {
2668 dma_unmap_sg(dev, req->src,
2669 sg_nents_for_len(req->src, src_len),
2670 DMA_TO_DEVICE);
2671 dma_unmap_sg(dev, req->dst,
2672 sg_nents_for_len(req->dst, dst_len),
2673 DMA_FROM_DEVICE);
2674 }
2675}
2676
2677void chcr_add_aead_src_ent(struct aead_request *req,
2678 struct ulptx_sgl *ulptx)
2679{
2680 struct ulptx_walk ulp_walk;
2681 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2682
2683 if (reqctx->imm) {
2684 u8 *buf = (u8 *)ulptx;
2685
2686 if (reqctx->b0_len) {
2687 memcpy(buf, reqctx->scratch_pad, reqctx->b0_len);
2688 buf += reqctx->b0_len;
2689 }
2690 sg_pcopy_to_buffer(req->src, sg_nents(req->src),
2691 buf, req->cryptlen + req->assoclen, 0);
2692 } else {
2693 ulptx_walk_init(&ulp_walk, ulptx);
2694 if (reqctx->b0_len)
2695 ulptx_walk_add_page(&ulp_walk, reqctx->b0_len,
2696 reqctx->b0_dma);
2697 ulptx_walk_add_sg(&ulp_walk, req->src, req->cryptlen +
2698 req->assoclen, 0);
2699 ulptx_walk_end(&ulp_walk);
2700 }
2701}
2702
2703void chcr_add_aead_dst_ent(struct aead_request *req,
2704 struct cpl_rx_phys_dsgl *phys_cpl,
2705 unsigned short qid)
2706{
2707 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2708 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2709 struct dsgl_walk dsgl_walk;
2710 unsigned int authsize = crypto_aead_authsize(tfm);
2711 struct chcr_context *ctx = a_ctx(tfm);
2712 u32 temp;
2713 unsigned int rx_channel_id = reqctx->rxqidx / ctx->rxq_perchan;
2714
2715 dsgl_walk_init(&dsgl_walk, phys_cpl);
2716 dsgl_walk_add_page(&dsgl_walk, IV + reqctx->b0_len, reqctx->iv_dma);
2717 temp = req->assoclen + req->cryptlen +
2718 (reqctx->op ? -authsize : authsize);
2719 dsgl_walk_add_sg(&dsgl_walk, req->dst, temp, 0);
2720 dsgl_walk_end(&dsgl_walk, qid, rx_channel_id);
2721}
2722
2723void chcr_add_cipher_src_ent(struct skcipher_request *req,
2724 void *ulptx,
2725 struct cipher_wr_param *wrparam)
2726{
2727 struct ulptx_walk ulp_walk;
2728 struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req);
2729 u8 *buf = ulptx;
2730
2731 memcpy(buf, reqctx->iv, IV);
2732 buf += IV;
2733 if (reqctx->imm) {
2734 sg_pcopy_to_buffer(req->src, sg_nents(req->src),
2735 buf, wrparam->bytes, reqctx->processed);
2736 } else {
2737 ulptx_walk_init(&ulp_walk, (struct ulptx_sgl *)buf);
2738 ulptx_walk_add_sg(&ulp_walk, reqctx->srcsg, wrparam->bytes,
2739 reqctx->src_ofst);
2740 reqctx->srcsg = ulp_walk.last_sg;
2741 reqctx->src_ofst = ulp_walk.last_sg_len;
2742 ulptx_walk_end(&ulp_walk);
2743 }
2744}
2745
2746void chcr_add_cipher_dst_ent(struct skcipher_request *req,
2747 struct cpl_rx_phys_dsgl *phys_cpl,
2748 struct cipher_wr_param *wrparam,
2749 unsigned short qid)
2750{
2751 struct chcr_skcipher_req_ctx *reqctx = skcipher_request_ctx(req);
2752 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(wrparam->req);
2753 struct chcr_context *ctx = c_ctx(tfm);
2754 struct dsgl_walk dsgl_walk;
2755 unsigned int rx_channel_id = reqctx->rxqidx / ctx->rxq_perchan;
2756
2757 dsgl_walk_init(&dsgl_walk, phys_cpl);
2758 dsgl_walk_add_sg(&dsgl_walk, reqctx->dstsg, wrparam->bytes,
2759 reqctx->dst_ofst);
2760 reqctx->dstsg = dsgl_walk.last_sg;
2761 reqctx->dst_ofst = dsgl_walk.last_sg_len;
2762 dsgl_walk_end(&dsgl_walk, qid, rx_channel_id);
2763}
2764
2765void chcr_add_hash_src_ent(struct ahash_request *req,
2766 struct ulptx_sgl *ulptx,
2767 struct hash_wr_param *param)
2768{
2769 struct ulptx_walk ulp_walk;
2770 struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req);
2771
2772 if (reqctx->hctx_wr.imm) {
2773 u8 *buf = (u8 *)ulptx;
2774
2775 if (param->bfr_len) {
2776 memcpy(buf, reqctx->reqbfr, param->bfr_len);
2777 buf += param->bfr_len;
2778 }
2779
2780 sg_pcopy_to_buffer(reqctx->hctx_wr.srcsg,
2781 sg_nents(reqctx->hctx_wr.srcsg), buf,
2782 param->sg_len, 0);
2783 } else {
2784 ulptx_walk_init(&ulp_walk, ulptx);
2785 if (param->bfr_len)
2786 ulptx_walk_add_page(&ulp_walk, param->bfr_len,
2787 reqctx->hctx_wr.dma_addr);
2788 ulptx_walk_add_sg(&ulp_walk, reqctx->hctx_wr.srcsg,
2789 param->sg_len, reqctx->hctx_wr.src_ofst);
2790 reqctx->hctx_wr.srcsg = ulp_walk.last_sg;
2791 reqctx->hctx_wr.src_ofst = ulp_walk.last_sg_len;
2792 ulptx_walk_end(&ulp_walk);
2793 }
2794}
2795
2796int chcr_hash_dma_map(struct device *dev,
2797 struct ahash_request *req)
2798{
2799 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
2800 int error = 0;
2801
2802 if (!req->nbytes)
2803 return 0;
2804 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2805 DMA_TO_DEVICE);
2806 if (!error)
2807 return -ENOMEM;
2808 req_ctx->hctx_wr.is_sg_map = 1;
2809 return 0;
2810}
2811
2812void chcr_hash_dma_unmap(struct device *dev,
2813 struct ahash_request *req)
2814{
2815 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
2816
2817 if (!req->nbytes)
2818 return;
2819
2820 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2821 DMA_TO_DEVICE);
2822 req_ctx->hctx_wr.is_sg_map = 0;
2823
2824}
2825
2826int chcr_cipher_dma_map(struct device *dev,
2827 struct skcipher_request *req)
2828{
2829 int error;
2830
2831 if (req->src == req->dst) {
2832 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2833 DMA_BIDIRECTIONAL);
2834 if (!error)
2835 goto err;
2836 } else {
2837 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2838 DMA_TO_DEVICE);
2839 if (!error)
2840 goto err;
2841 error = dma_map_sg(dev, req->dst, sg_nents(req->dst),
2842 DMA_FROM_DEVICE);
2843 if (!error) {
2844 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2845 DMA_TO_DEVICE);
2846 goto err;
2847 }
2848 }
2849
2850 return 0;
2851err:
2852 return -ENOMEM;
2853}
2854
2855void chcr_cipher_dma_unmap(struct device *dev,
2856 struct skcipher_request *req)
2857{
2858 if (req->src == req->dst) {
2859 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2860 DMA_BIDIRECTIONAL);
2861 } else {
2862 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2863 DMA_TO_DEVICE);
2864 dma_unmap_sg(dev, req->dst, sg_nents(req->dst),
2865 DMA_FROM_DEVICE);
2866 }
2867}
2868
2869static int set_msg_len(u8 *block, unsigned int msglen, int csize)
2870{
2871 __be32 data;
2872
2873 memset(block, 0, csize);
2874 block += csize;
2875
2876 if (csize >= 4)
2877 csize = 4;
2878 else if (msglen > (unsigned int)(1 << (8 * csize)))
2879 return -EOVERFLOW;
2880
2881 data = cpu_to_be32(msglen);
2882 memcpy(block - csize, (u8 *)&data + 4 - csize, csize);
2883
2884 return 0;
2885}
2886
2887static int generate_b0(struct aead_request *req, u8 *ivptr,
2888 unsigned short op_type)
2889{
2890 unsigned int l, lp, m;
2891 int rc;
2892 struct crypto_aead *aead = crypto_aead_reqtfm(req);
2893 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2894 u8 *b0 = reqctx->scratch_pad;
2895
2896 m = crypto_aead_authsize(aead);
2897
2898 memcpy(b0, ivptr, 16);
2899
2900 lp = b0[0];
2901 l = lp + 1;
2902
2903 /* set m, bits 3-5 */
2904 *b0 |= (8 * ((m - 2) / 2));
2905
2906 /* set adata, bit 6, if associated data is used */
2907 if (req->assoclen)
2908 *b0 |= 64;
2909 rc = set_msg_len(b0 + 16 - l,
2910 (op_type == CHCR_DECRYPT_OP) ?
2911 req->cryptlen - m : req->cryptlen, l);
2912
2913 return rc;
2914}
2915
2916static inline int crypto_ccm_check_iv(const u8 *iv)
2917{
2918 /* 2 <= L <= 8, so 1 <= L' <= 7. */
2919 if (iv[0] < 1 || iv[0] > 7)
2920 return -EINVAL;
2921
2922 return 0;
2923}
2924
2925static int ccm_format_packet(struct aead_request *req,
2926 u8 *ivptr,
2927 unsigned int sub_type,
2928 unsigned short op_type,
2929 unsigned int assoclen)
2930{
2931 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2932 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2933 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2934 int rc = 0;
2935
2936 if (sub_type == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) {
2937 ivptr[0] = 3;
2938 memcpy(ivptr + 1, &aeadctx->salt[0], 3);
2939 memcpy(ivptr + 4, req->iv, 8);
2940 memset(ivptr + 12, 0, 4);
2941 } else {
2942 memcpy(ivptr, req->iv, 16);
2943 }
2944 if (assoclen)
2945 put_unaligned_be16(assoclen, &reqctx->scratch_pad[16]);
2946
2947 rc = generate_b0(req, ivptr, op_type);
2948 /* zero the ctr value */
2949 memset(ivptr + 15 - ivptr[0], 0, ivptr[0] + 1);
2950 return rc;
2951}
2952
2953static void fill_sec_cpl_for_aead(struct cpl_tx_sec_pdu *sec_cpl,
2954 unsigned int dst_size,
2955 struct aead_request *req,
2956 unsigned short op_type)
2957{
2958 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2959 struct chcr_context *ctx = a_ctx(tfm);
2960 struct chcr_aead_ctx *aeadctx = AEAD_CTX(ctx);
2961 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2962 unsigned int cipher_mode = CHCR_SCMD_CIPHER_MODE_AES_CCM;
2963 unsigned int mac_mode = CHCR_SCMD_AUTH_MODE_CBCMAC;
2964 unsigned int rx_channel_id = reqctx->rxqidx / ctx->rxq_perchan;
2965 unsigned int ccm_xtra;
2966 unsigned int tag_offset = 0, auth_offset = 0;
2967 unsigned int assoclen;
2968
2969 if (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309)
2970 assoclen = req->assoclen - 8;
2971 else
2972 assoclen = req->assoclen;
2973 ccm_xtra = CCM_B0_SIZE +
2974 ((assoclen) ? CCM_AAD_FIELD_SIZE : 0);
2975
2976 auth_offset = req->cryptlen ?
2977 (req->assoclen + IV + 1 + ccm_xtra) : 0;
2978 if (op_type == CHCR_DECRYPT_OP) {
2979 if (crypto_aead_authsize(tfm) != req->cryptlen)
2980 tag_offset = crypto_aead_authsize(tfm);
2981 else
2982 auth_offset = 0;
2983 }
2984
2985 sec_cpl->op_ivinsrtofst = FILL_SEC_CPL_OP_IVINSR(rx_channel_id, 2, 1);
2986 sec_cpl->pldlen =
2987 htonl(req->assoclen + IV + req->cryptlen + ccm_xtra);
2988 /* For CCM there wil be b0 always. So AAD start will be 1 always */
2989 sec_cpl->aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI(
2990 1 + IV, IV + assoclen + ccm_xtra,
2991 req->assoclen + IV + 1 + ccm_xtra, 0);
2992
2993 sec_cpl->cipherstop_lo_authinsert = FILL_SEC_CPL_AUTHINSERT(0,
2994 auth_offset, tag_offset,
2995 (op_type == CHCR_ENCRYPT_OP) ? 0 :
2996 crypto_aead_authsize(tfm));
2997 sec_cpl->seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(op_type,
2998 (op_type == CHCR_ENCRYPT_OP) ? 0 : 1,
2999 cipher_mode, mac_mode,
3000 aeadctx->hmac_ctrl, IV >> 1);
3001
3002 sec_cpl->ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1, 0,
3003 0, dst_size);
3004}
3005
3006static int aead_ccm_validate_input(unsigned short op_type,
3007 struct aead_request *req,
3008 struct chcr_aead_ctx *aeadctx,
3009 unsigned int sub_type)
3010{
3011 if (sub_type != CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) {
3012 if (crypto_ccm_check_iv(req->iv)) {
3013 pr_err("CCM: IV check fails\n");
3014 return -EINVAL;
3015 }
3016 } else {
3017 if (req->assoclen != 16 && req->assoclen != 20) {
3018 pr_err("RFC4309: Invalid AAD length %d\n",
3019 req->assoclen);
3020 return -EINVAL;
3021 }
3022 }
3023 return 0;
3024}
3025
3026static struct sk_buff *create_aead_ccm_wr(struct aead_request *req,
3027 unsigned short qid,
3028 int size)
3029{
3030 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
3031 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3032 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
3033 struct sk_buff *skb = NULL;
3034 struct chcr_wr *chcr_req;
3035 struct cpl_rx_phys_dsgl *phys_cpl;
3036 struct ulptx_sgl *ulptx;
3037 unsigned int transhdr_len;
3038 unsigned int dst_size = 0, kctx_len, dnents, temp, snents;
3039 unsigned int sub_type, assoclen = req->assoclen;
3040 unsigned int authsize = crypto_aead_authsize(tfm);
3041 int error = -EINVAL;
3042 u8 *ivptr;
3043 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
3044 GFP_ATOMIC;
3045 struct adapter *adap = padap(a_ctx(tfm)->dev);
3046
3047 sub_type = get_aead_subtype(tfm);
3048 if (sub_type == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309)
3049 assoclen -= 8;
3050 reqctx->b0_len = CCM_B0_SIZE + (assoclen ? CCM_AAD_FIELD_SIZE : 0);
3051 error = chcr_aead_common_init(req);
3052 if (error)
3053 return ERR_PTR(error);
3054
3055 error = aead_ccm_validate_input(reqctx->op, req, aeadctx, sub_type);
3056 if (error)
3057 goto err;
3058 dnents = sg_nents_xlen(req->dst, req->assoclen + req->cryptlen
3059 + (reqctx->op ? -authsize : authsize),
3060 CHCR_DST_SG_SIZE, 0);
3061 dnents += MIN_CCM_SG; // For IV and B0
3062 dst_size = get_space_for_phys_dsgl(dnents);
3063 snents = sg_nents_xlen(req->src, req->assoclen + req->cryptlen,
3064 CHCR_SRC_SG_SIZE, 0);
3065 snents += MIN_CCM_SG; //For B0
3066 kctx_len = roundup(aeadctx->enckey_len, 16) * 2;
3067 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
3068 reqctx->imm = (transhdr_len + req->assoclen + req->cryptlen +
3069 reqctx->b0_len) <= SGE_MAX_WR_LEN;
3070 temp = reqctx->imm ? roundup(req->assoclen + req->cryptlen +
3071 reqctx->b0_len, 16) :
3072 (sgl_len(snents) * 8);
3073 transhdr_len += temp;
3074 transhdr_len = roundup(transhdr_len, 16);
3075
3076 if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE -
3077 reqctx->b0_len, transhdr_len, reqctx->op)) {
3078 atomic_inc(&adap->chcr_stats.fallback);
3079 chcr_aead_common_exit(req);
3080 return ERR_PTR(chcr_aead_fallback(req, reqctx->op));
3081 }
3082 skb = alloc_skb(transhdr_len, flags);
3083
3084 if (!skb) {
3085 error = -ENOMEM;
3086 goto err;
3087 }
3088
3089 chcr_req = __skb_put_zero(skb, transhdr_len);
3090
3091 fill_sec_cpl_for_aead(&chcr_req->sec_cpl, dst_size, req, reqctx->op);
3092
3093 chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr;
3094 memcpy(chcr_req->key_ctx.key, aeadctx->key, aeadctx->enckey_len);
3095 memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16),
3096 aeadctx->key, aeadctx->enckey_len);
3097
3098 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
3099 ivptr = (u8 *)(phys_cpl + 1) + dst_size;
3100 ulptx = (struct ulptx_sgl *)(ivptr + IV);
3101 error = ccm_format_packet(req, ivptr, sub_type, reqctx->op, assoclen);
3102 if (error)
3103 goto dstmap_fail;
3104 chcr_add_aead_dst_ent(req, phys_cpl, qid);
3105 chcr_add_aead_src_ent(req, ulptx);
3106
3107 atomic_inc(&adap->chcr_stats.aead_rqst);
3108 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + IV +
3109 kctx_len + (reqctx->imm ? (req->assoclen + req->cryptlen +
3110 reqctx->b0_len) : 0);
3111 create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, 0,
3112 transhdr_len, temp, 0);
3113 reqctx->skb = skb;
3114
3115 return skb;
3116dstmap_fail:
3117 kfree_skb(skb);
3118err:
3119 chcr_aead_common_exit(req);
3120 return ERR_PTR(error);
3121}
3122
3123static struct sk_buff *create_gcm_wr(struct aead_request *req,
3124 unsigned short qid,
3125 int size)
3126{
3127 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
3128 struct chcr_context *ctx = a_ctx(tfm);
3129 struct chcr_aead_ctx *aeadctx = AEAD_CTX(ctx);
3130 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
3131 struct sk_buff *skb = NULL;
3132 struct chcr_wr *chcr_req;
3133 struct cpl_rx_phys_dsgl *phys_cpl;
3134 struct ulptx_sgl *ulptx;
3135 unsigned int transhdr_len, dnents = 0, snents;
3136 unsigned int dst_size = 0, temp = 0, kctx_len, assoclen = req->assoclen;
3137 unsigned int authsize = crypto_aead_authsize(tfm);
3138 int error = -EINVAL;
3139 u8 *ivptr;
3140 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
3141 GFP_ATOMIC;
3142 struct adapter *adap = padap(ctx->dev);
3143 unsigned int rx_channel_id = reqctx->rxqidx / ctx->rxq_perchan;
3144
3145 if (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106)
3146 assoclen = req->assoclen - 8;
3147
3148 reqctx->b0_len = 0;
3149 error = chcr_aead_common_init(req);
3150 if (error)
3151 return ERR_PTR(error);
3152 dnents = sg_nents_xlen(req->dst, req->assoclen + req->cryptlen +
3153 (reqctx->op ? -authsize : authsize),
3154 CHCR_DST_SG_SIZE, 0);
3155 snents = sg_nents_xlen(req->src, req->assoclen + req->cryptlen,
3156 CHCR_SRC_SG_SIZE, 0);
3157 dnents += MIN_GCM_SG; // For IV
3158 dst_size = get_space_for_phys_dsgl(dnents);
3159 kctx_len = roundup(aeadctx->enckey_len, 16) + AEAD_H_SIZE;
3160 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
3161 reqctx->imm = (transhdr_len + req->assoclen + req->cryptlen) <=
3162 SGE_MAX_WR_LEN;
3163 temp = reqctx->imm ? roundup(req->assoclen + req->cryptlen, 16) :
3164 (sgl_len(snents) * 8);
3165 transhdr_len += temp;
3166 transhdr_len = roundup(transhdr_len, 16);
3167 if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE,
3168 transhdr_len, reqctx->op)) {
3169
3170 atomic_inc(&adap->chcr_stats.fallback);
3171 chcr_aead_common_exit(req);
3172 return ERR_PTR(chcr_aead_fallback(req, reqctx->op));
3173 }
3174 skb = alloc_skb(transhdr_len, flags);
3175 if (!skb) {
3176 error = -ENOMEM;
3177 goto err;
3178 }
3179
3180 chcr_req = __skb_put_zero(skb, transhdr_len);
3181
3182 //Offset of tag from end
3183 temp = (reqctx->op == CHCR_ENCRYPT_OP) ? 0 : authsize;
3184 chcr_req->sec_cpl.op_ivinsrtofst = FILL_SEC_CPL_OP_IVINSR(
3185 rx_channel_id, 2, 1);
3186 chcr_req->sec_cpl.pldlen =
3187 htonl(req->assoclen + IV + req->cryptlen);
3188 chcr_req->sec_cpl.aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI(
3189 assoclen ? 1 + IV : 0,
3190 assoclen ? IV + assoclen : 0,
3191 req->assoclen + IV + 1, 0);
3192 chcr_req->sec_cpl.cipherstop_lo_authinsert =
3193 FILL_SEC_CPL_AUTHINSERT(0, req->assoclen + IV + 1,
3194 temp, temp);
3195 chcr_req->sec_cpl.seqno_numivs =
3196 FILL_SEC_CPL_SCMD0_SEQNO(reqctx->op, (reqctx->op ==
3197 CHCR_ENCRYPT_OP) ? 1 : 0,
3198 CHCR_SCMD_CIPHER_MODE_AES_GCM,
3199 CHCR_SCMD_AUTH_MODE_GHASH,
3200 aeadctx->hmac_ctrl, IV >> 1);
3201 chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1,
3202 0, 0, dst_size);
3203 chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr;
3204 memcpy(chcr_req->key_ctx.key, aeadctx->key, aeadctx->enckey_len);
3205 memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16),
3206 GCM_CTX(aeadctx)->ghash_h, AEAD_H_SIZE);
3207
3208 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
3209 ivptr = (u8 *)(phys_cpl + 1) + dst_size;
3210 /* prepare a 16 byte iv */
3211 /* S A L T | IV | 0x00000001 */
3212 if (get_aead_subtype(tfm) ==
3213 CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106) {
3214 memcpy(ivptr, aeadctx->salt, 4);
3215 memcpy(ivptr + 4, req->iv, GCM_RFC4106_IV_SIZE);
3216 } else {
3217 memcpy(ivptr, req->iv, GCM_AES_IV_SIZE);
3218 }
3219 put_unaligned_be32(0x01, &ivptr[12]);
3220 ulptx = (struct ulptx_sgl *)(ivptr + 16);
3221
3222 chcr_add_aead_dst_ent(req, phys_cpl, qid);
3223 chcr_add_aead_src_ent(req, ulptx);
3224 atomic_inc(&adap->chcr_stats.aead_rqst);
3225 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + IV +
3226 kctx_len + (reqctx->imm ? (req->assoclen + req->cryptlen) : 0);
3227 create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, size,
3228 transhdr_len, temp, reqctx->verify);
3229 reqctx->skb = skb;
3230 return skb;
3231
3232err:
3233 chcr_aead_common_exit(req);
3234 return ERR_PTR(error);
3235}
3236
3237
3238
3239static int chcr_aead_cra_init(struct crypto_aead *tfm)
3240{
3241 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3242 struct aead_alg *alg = crypto_aead_alg(tfm);
3243
3244 aeadctx->sw_cipher = crypto_alloc_aead(alg->base.cra_name, 0,
3245 CRYPTO_ALG_NEED_FALLBACK |
3246 CRYPTO_ALG_ASYNC);
3247 if (IS_ERR(aeadctx->sw_cipher))
3248 return PTR_ERR(aeadctx->sw_cipher);
3249 crypto_aead_set_reqsize(tfm, max(sizeof(struct chcr_aead_reqctx),
3250 sizeof(struct aead_request) +
3251 crypto_aead_reqsize(aeadctx->sw_cipher)));
3252 return chcr_device_init(a_ctx(tfm));
3253}
3254
3255static void chcr_aead_cra_exit(struct crypto_aead *tfm)
3256{
3257 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3258
3259 crypto_free_aead(aeadctx->sw_cipher);
3260}
3261
3262static int chcr_authenc_null_setauthsize(struct crypto_aead *tfm,
3263 unsigned int authsize)
3264{
3265 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3266
3267 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NOP;
3268 aeadctx->mayverify = VERIFY_HW;
3269 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
3270}
3271static int chcr_authenc_setauthsize(struct crypto_aead *tfm,
3272 unsigned int authsize)
3273{
3274 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3275 u32 maxauth = crypto_aead_maxauthsize(tfm);
3276
3277 /*SHA1 authsize in ipsec is 12 instead of 10 i.e maxauthsize / 2 is not
3278 * true for sha1. authsize == 12 condition should be before
3279 * authsize == (maxauth >> 1)
3280 */
3281 if (authsize == ICV_4) {
3282 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1;
3283 aeadctx->mayverify = VERIFY_HW;
3284 } else if (authsize == ICV_6) {
3285 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL2;
3286 aeadctx->mayverify = VERIFY_HW;
3287 } else if (authsize == ICV_10) {
3288 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_TRUNC_RFC4366;
3289 aeadctx->mayverify = VERIFY_HW;
3290 } else if (authsize == ICV_12) {
3291 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
3292 aeadctx->mayverify = VERIFY_HW;
3293 } else if (authsize == ICV_14) {
3294 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3;
3295 aeadctx->mayverify = VERIFY_HW;
3296 } else if (authsize == (maxauth >> 1)) {
3297 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
3298 aeadctx->mayverify = VERIFY_HW;
3299 } else if (authsize == maxauth) {
3300 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3301 aeadctx->mayverify = VERIFY_HW;
3302 } else {
3303 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3304 aeadctx->mayverify = VERIFY_SW;
3305 }
3306 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
3307}
3308
3309
3310static int chcr_gcm_setauthsize(struct crypto_aead *tfm, unsigned int authsize)
3311{
3312 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3313
3314 switch (authsize) {
3315 case ICV_4:
3316 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1;
3317 aeadctx->mayverify = VERIFY_HW;
3318 break;
3319 case ICV_8:
3320 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
3321 aeadctx->mayverify = VERIFY_HW;
3322 break;
3323 case ICV_12:
3324 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
3325 aeadctx->mayverify = VERIFY_HW;
3326 break;
3327 case ICV_14:
3328 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3;
3329 aeadctx->mayverify = VERIFY_HW;
3330 break;
3331 case ICV_16:
3332 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3333 aeadctx->mayverify = VERIFY_HW;
3334 break;
3335 case ICV_13:
3336 case ICV_15:
3337 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3338 aeadctx->mayverify = VERIFY_SW;
3339 break;
3340 default:
3341 return -EINVAL;
3342 }
3343 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
3344}
3345
3346static int chcr_4106_4309_setauthsize(struct crypto_aead *tfm,
3347 unsigned int authsize)
3348{
3349 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3350
3351 switch (authsize) {
3352 case ICV_8:
3353 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
3354 aeadctx->mayverify = VERIFY_HW;
3355 break;
3356 case ICV_12:
3357 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
3358 aeadctx->mayverify = VERIFY_HW;
3359 break;
3360 case ICV_16:
3361 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3362 aeadctx->mayverify = VERIFY_HW;
3363 break;
3364 default:
3365 return -EINVAL;
3366 }
3367 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
3368}
3369
3370static int chcr_ccm_setauthsize(struct crypto_aead *tfm,
3371 unsigned int authsize)
3372{
3373 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3374
3375 switch (authsize) {
3376 case ICV_4:
3377 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1;
3378 aeadctx->mayverify = VERIFY_HW;
3379 break;
3380 case ICV_6:
3381 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL2;
3382 aeadctx->mayverify = VERIFY_HW;
3383 break;
3384 case ICV_8:
3385 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
3386 aeadctx->mayverify = VERIFY_HW;
3387 break;
3388 case ICV_10:
3389 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_TRUNC_RFC4366;
3390 aeadctx->mayverify = VERIFY_HW;
3391 break;
3392 case ICV_12:
3393 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
3394 aeadctx->mayverify = VERIFY_HW;
3395 break;
3396 case ICV_14:
3397 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3;
3398 aeadctx->mayverify = VERIFY_HW;
3399 break;
3400 case ICV_16:
3401 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3402 aeadctx->mayverify = VERIFY_HW;
3403 break;
3404 default:
3405 return -EINVAL;
3406 }
3407 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
3408}
3409
3410static int chcr_ccm_common_setkey(struct crypto_aead *aead,
3411 const u8 *key,
3412 unsigned int keylen)
3413{
3414 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead));
3415 unsigned char ck_size, mk_size;
3416 int key_ctx_size = 0;
3417
3418 key_ctx_size = sizeof(struct _key_ctx) + roundup(keylen, 16) * 2;
3419 if (keylen == AES_KEYSIZE_128) {
3420 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
3421 mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_128;
3422 } else if (keylen == AES_KEYSIZE_192) {
3423 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
3424 mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_192;
3425 } else if (keylen == AES_KEYSIZE_256) {
3426 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
3427 mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256;
3428 } else {
3429 aeadctx->enckey_len = 0;
3430 return -EINVAL;
3431 }
3432 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, mk_size, 0, 0,
3433 key_ctx_size >> 4);
3434 memcpy(aeadctx->key, key, keylen);
3435 aeadctx->enckey_len = keylen;
3436
3437 return 0;
3438}
3439
3440static int chcr_aead_ccm_setkey(struct crypto_aead *aead,
3441 const u8 *key,
3442 unsigned int keylen)
3443{
3444 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead));
3445 int error;
3446
3447 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3448 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead) &
3449 CRYPTO_TFM_REQ_MASK);
3450 error = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3451 if (error)
3452 return error;
3453 return chcr_ccm_common_setkey(aead, key, keylen);
3454}
3455
3456static int chcr_aead_rfc4309_setkey(struct crypto_aead *aead, const u8 *key,
3457 unsigned int keylen)
3458{
3459 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead));
3460 int error;
3461
3462 if (keylen < 3) {
3463 aeadctx->enckey_len = 0;
3464 return -EINVAL;
3465 }
3466 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3467 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead) &
3468 CRYPTO_TFM_REQ_MASK);
3469 error = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3470 if (error)
3471 return error;
3472 keylen -= 3;
3473 memcpy(aeadctx->salt, key + keylen, 3);
3474 return chcr_ccm_common_setkey(aead, key, keylen);
3475}
3476
3477static int chcr_gcm_setkey(struct crypto_aead *aead, const u8 *key,
3478 unsigned int keylen)
3479{
3480 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead));
3481 struct chcr_gcm_ctx *gctx = GCM_CTX(aeadctx);
3482 unsigned int ck_size;
3483 int ret = 0, key_ctx_size = 0;
3484 struct crypto_aes_ctx aes;
3485
3486 aeadctx->enckey_len = 0;
3487 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3488 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead)
3489 & CRYPTO_TFM_REQ_MASK);
3490 ret = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3491 if (ret)
3492 goto out;
3493
3494 if (get_aead_subtype(aead) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106 &&
3495 keylen > 3) {
3496 keylen -= 4; /* nonce/salt is present in the last 4 bytes */
3497 memcpy(aeadctx->salt, key + keylen, 4);
3498 }
3499 if (keylen == AES_KEYSIZE_128) {
3500 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
3501 } else if (keylen == AES_KEYSIZE_192) {
3502 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
3503 } else if (keylen == AES_KEYSIZE_256) {
3504 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
3505 } else {
3506 pr_err("GCM: Invalid key length %d\n", keylen);
3507 ret = -EINVAL;
3508 goto out;
3509 }
3510
3511 memcpy(aeadctx->key, key, keylen);
3512 aeadctx->enckey_len = keylen;
3513 key_ctx_size = sizeof(struct _key_ctx) + roundup(keylen, 16) +
3514 AEAD_H_SIZE;
3515 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size,
3516 CHCR_KEYCTX_MAC_KEY_SIZE_128,
3517 0, 0,
3518 key_ctx_size >> 4);
3519 /* Calculate the H = CIPH(K, 0 repeated 16 times).
3520 * It will go in key context
3521 */
3522 ret = aes_expandkey(&aes, key, keylen);
3523 if (ret) {
3524 aeadctx->enckey_len = 0;
3525 goto out;
3526 }
3527 memset(gctx->ghash_h, 0, AEAD_H_SIZE);
3528 aes_encrypt(&aes, gctx->ghash_h, gctx->ghash_h);
3529 memzero_explicit(&aes, sizeof(aes));
3530
3531out:
3532 return ret;
3533}
3534
3535static int chcr_authenc_setkey(struct crypto_aead *authenc, const u8 *key,
3536 unsigned int keylen)
3537{
3538 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(authenc));
3539 struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx);
3540 /* it contains auth and cipher key both*/
3541 struct crypto_authenc_keys keys;
3542 unsigned int bs, subtype;
3543 unsigned int max_authsize = crypto_aead_alg(authenc)->maxauthsize;
3544 int err = 0, i, key_ctx_len = 0;
3545 unsigned char ck_size = 0;
3546 unsigned char pad[CHCR_HASH_MAX_BLOCK_SIZE_128] = { 0 };
3547 struct crypto_shash *base_hash = ERR_PTR(-EINVAL);
3548 struct algo_param param;
3549 int align;
3550 u8 *o_ptr = NULL;
3551
3552 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3553 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(authenc)
3554 & CRYPTO_TFM_REQ_MASK);
3555 err = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3556 if (err)
3557 goto out;
3558
3559 if (crypto_authenc_extractkeys(&keys, key, keylen) != 0)
3560 goto out;
3561
3562 if (get_alg_config(¶m, max_authsize)) {
3563 pr_err("Unsupported digest size\n");
3564 goto out;
3565 }
3566 subtype = get_aead_subtype(authenc);
3567 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
3568 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
3569 if (keys.enckeylen < CTR_RFC3686_NONCE_SIZE)
3570 goto out;
3571 memcpy(aeadctx->nonce, keys.enckey + (keys.enckeylen
3572 - CTR_RFC3686_NONCE_SIZE), CTR_RFC3686_NONCE_SIZE);
3573 keys.enckeylen -= CTR_RFC3686_NONCE_SIZE;
3574 }
3575 if (keys.enckeylen == AES_KEYSIZE_128) {
3576 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
3577 } else if (keys.enckeylen == AES_KEYSIZE_192) {
3578 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
3579 } else if (keys.enckeylen == AES_KEYSIZE_256) {
3580 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
3581 } else {
3582 pr_err("Unsupported cipher key\n");
3583 goto out;
3584 }
3585
3586 /* Copy only encryption key. We use authkey to generate h(ipad) and
3587 * h(opad) so authkey is not needed again. authkeylen size have the
3588 * size of the hash digest size.
3589 */
3590 memcpy(aeadctx->key, keys.enckey, keys.enckeylen);
3591 aeadctx->enckey_len = keys.enckeylen;
3592 if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_SHA ||
3593 subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL) {
3594
3595 get_aes_decrypt_key(actx->dec_rrkey, aeadctx->key,
3596 aeadctx->enckey_len << 3);
3597 }
3598 base_hash = chcr_alloc_shash(max_authsize);
3599 if (IS_ERR(base_hash)) {
3600 pr_err("Base driver cannot be loaded\n");
3601 goto out;
3602 }
3603 {
3604 SHASH_DESC_ON_STACK(shash, base_hash);
3605
3606 shash->tfm = base_hash;
3607 bs = crypto_shash_blocksize(base_hash);
3608 align = KEYCTX_ALIGN_PAD(max_authsize);
3609 o_ptr = actx->h_iopad + param.result_size + align;
3610
3611 if (keys.authkeylen > bs) {
3612 err = crypto_shash_digest(shash, keys.authkey,
3613 keys.authkeylen,
3614 o_ptr);
3615 if (err) {
3616 pr_err("Base driver cannot be loaded\n");
3617 goto out;
3618 }
3619 keys.authkeylen = max_authsize;
3620 } else
3621 memcpy(o_ptr, keys.authkey, keys.authkeylen);
3622
3623 /* Compute the ipad-digest*/
3624 memset(pad + keys.authkeylen, 0, bs - keys.authkeylen);
3625 memcpy(pad, o_ptr, keys.authkeylen);
3626 for (i = 0; i < bs >> 2; i++)
3627 *((unsigned int *)pad + i) ^= IPAD_DATA;
3628
3629 if (chcr_compute_partial_hash(shash, pad, actx->h_iopad,
3630 max_authsize))
3631 goto out;
3632 /* Compute the opad-digest */
3633 memset(pad + keys.authkeylen, 0, bs - keys.authkeylen);
3634 memcpy(pad, o_ptr, keys.authkeylen);
3635 for (i = 0; i < bs >> 2; i++)
3636 *((unsigned int *)pad + i) ^= OPAD_DATA;
3637
3638 if (chcr_compute_partial_hash(shash, pad, o_ptr, max_authsize))
3639 goto out;
3640
3641 /* convert the ipad and opad digest to network order */
3642 chcr_change_order(actx->h_iopad, param.result_size);
3643 chcr_change_order(o_ptr, param.result_size);
3644 key_ctx_len = sizeof(struct _key_ctx) +
3645 roundup(keys.enckeylen, 16) +
3646 (param.result_size + align) * 2;
3647 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, param.mk_size,
3648 0, 1, key_ctx_len >> 4);
3649 actx->auth_mode = param.auth_mode;
3650 chcr_free_shash(base_hash);
3651
3652 memzero_explicit(&keys, sizeof(keys));
3653 return 0;
3654 }
3655out:
3656 aeadctx->enckey_len = 0;
3657 memzero_explicit(&keys, sizeof(keys));
3658 if (!IS_ERR(base_hash))
3659 chcr_free_shash(base_hash);
3660 return -EINVAL;
3661}
3662
3663static int chcr_aead_digest_null_setkey(struct crypto_aead *authenc,
3664 const u8 *key, unsigned int keylen)
3665{
3666 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(authenc));
3667 struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx);
3668 struct crypto_authenc_keys keys;
3669 int err;
3670 /* it contains auth and cipher key both*/
3671 unsigned int subtype;
3672 int key_ctx_len = 0;
3673 unsigned char ck_size = 0;
3674
3675 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3676 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(authenc)
3677 & CRYPTO_TFM_REQ_MASK);
3678 err = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3679 if (err)
3680 goto out;
3681
3682 if (crypto_authenc_extractkeys(&keys, key, keylen) != 0)
3683 goto out;
3684
3685 subtype = get_aead_subtype(authenc);
3686 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
3687 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
3688 if (keys.enckeylen < CTR_RFC3686_NONCE_SIZE)
3689 goto out;
3690 memcpy(aeadctx->nonce, keys.enckey + (keys.enckeylen
3691 - CTR_RFC3686_NONCE_SIZE), CTR_RFC3686_NONCE_SIZE);
3692 keys.enckeylen -= CTR_RFC3686_NONCE_SIZE;
3693 }
3694 if (keys.enckeylen == AES_KEYSIZE_128) {
3695 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
3696 } else if (keys.enckeylen == AES_KEYSIZE_192) {
3697 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
3698 } else if (keys.enckeylen == AES_KEYSIZE_256) {
3699 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
3700 } else {
3701 pr_err("Unsupported cipher key %d\n", keys.enckeylen);
3702 goto out;
3703 }
3704 memcpy(aeadctx->key, keys.enckey, keys.enckeylen);
3705 aeadctx->enckey_len = keys.enckeylen;
3706 if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_SHA ||
3707 subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL) {
3708 get_aes_decrypt_key(actx->dec_rrkey, aeadctx->key,
3709 aeadctx->enckey_len << 3);
3710 }
3711 key_ctx_len = sizeof(struct _key_ctx) + roundup(keys.enckeylen, 16);
3712
3713 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY, 0,
3714 0, key_ctx_len >> 4);
3715 actx->auth_mode = CHCR_SCMD_AUTH_MODE_NOP;
3716 memzero_explicit(&keys, sizeof(keys));
3717 return 0;
3718out:
3719 aeadctx->enckey_len = 0;
3720 memzero_explicit(&keys, sizeof(keys));
3721 return -EINVAL;
3722}
3723
3724static int chcr_aead_op(struct aead_request *req,
3725 int size,
3726 create_wr_t create_wr_fn)
3727{
3728 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
3729 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
3730 struct chcr_context *ctx = a_ctx(tfm);
3731 struct uld_ctx *u_ctx = ULD_CTX(ctx);
3732 struct sk_buff *skb;
3733 struct chcr_dev *cdev;
3734
3735 cdev = a_ctx(tfm)->dev;
3736 if (!cdev) {
3737 pr_err("%s : No crypto device.\n", __func__);
3738 return -ENXIO;
3739 }
3740
3741 if (chcr_inc_wrcount(cdev)) {
3742 /* Detach state for CHCR means lldi or padap is freed.
3743 * We cannot increment fallback here.
3744 */
3745 return chcr_aead_fallback(req, reqctx->op);
3746 }
3747
3748 if (cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
3749 reqctx->txqidx) &&
3750 (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))) {
3751 chcr_dec_wrcount(cdev);
3752 return -ENOSPC;
3753 }
3754
3755 if (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106 &&
3756 crypto_ipsec_check_assoclen(req->assoclen) != 0) {
3757 pr_err("RFC4106: Invalid value of assoclen %d\n",
3758 req->assoclen);
3759 return -EINVAL;
3760 }
3761
3762 /* Form a WR from req */
3763 skb = create_wr_fn(req, u_ctx->lldi.rxq_ids[reqctx->rxqidx], size);
3764
3765 if (IS_ERR_OR_NULL(skb)) {
3766 chcr_dec_wrcount(cdev);
3767 return PTR_ERR_OR_ZERO(skb);
3768 }
3769
3770 skb->dev = u_ctx->lldi.ports[0];
3771 set_wr_txq(skb, CPL_PRIORITY_DATA, reqctx->txqidx);
3772 chcr_send_wr(skb);
3773 return -EINPROGRESS;
3774}
3775
3776static int chcr_aead_encrypt(struct aead_request *req)
3777{
3778 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
3779 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
3780 struct chcr_context *ctx = a_ctx(tfm);
3781 unsigned int cpu;
3782
3783 cpu = get_cpu();
3784 reqctx->txqidx = cpu % ctx->ntxq;
3785 reqctx->rxqidx = cpu % ctx->nrxq;
3786 put_cpu();
3787
3788 reqctx->verify = VERIFY_HW;
3789 reqctx->op = CHCR_ENCRYPT_OP;
3790
3791 switch (get_aead_subtype(tfm)) {
3792 case CRYPTO_ALG_SUB_TYPE_CTR_SHA:
3793 case CRYPTO_ALG_SUB_TYPE_CBC_SHA:
3794 case CRYPTO_ALG_SUB_TYPE_CBC_NULL:
3795 case CRYPTO_ALG_SUB_TYPE_CTR_NULL:
3796 return chcr_aead_op(req, 0, create_authenc_wr);
3797 case CRYPTO_ALG_SUB_TYPE_AEAD_CCM:
3798 case CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309:
3799 return chcr_aead_op(req, 0, create_aead_ccm_wr);
3800 default:
3801 return chcr_aead_op(req, 0, create_gcm_wr);
3802 }
3803}
3804
3805static int chcr_aead_decrypt(struct aead_request *req)
3806{
3807 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
3808 struct chcr_context *ctx = a_ctx(tfm);
3809 struct chcr_aead_ctx *aeadctx = AEAD_CTX(ctx);
3810 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
3811 int size;
3812 unsigned int cpu;
3813
3814 cpu = get_cpu();
3815 reqctx->txqidx = cpu % ctx->ntxq;
3816 reqctx->rxqidx = cpu % ctx->nrxq;
3817 put_cpu();
3818
3819 if (aeadctx->mayverify == VERIFY_SW) {
3820 size = crypto_aead_maxauthsize(tfm);
3821 reqctx->verify = VERIFY_SW;
3822 } else {
3823 size = 0;
3824 reqctx->verify = VERIFY_HW;
3825 }
3826 reqctx->op = CHCR_DECRYPT_OP;
3827 switch (get_aead_subtype(tfm)) {
3828 case CRYPTO_ALG_SUB_TYPE_CBC_SHA:
3829 case CRYPTO_ALG_SUB_TYPE_CTR_SHA:
3830 case CRYPTO_ALG_SUB_TYPE_CBC_NULL:
3831 case CRYPTO_ALG_SUB_TYPE_CTR_NULL:
3832 return chcr_aead_op(req, size, create_authenc_wr);
3833 case CRYPTO_ALG_SUB_TYPE_AEAD_CCM:
3834 case CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309:
3835 return chcr_aead_op(req, size, create_aead_ccm_wr);
3836 default:
3837 return chcr_aead_op(req, size, create_gcm_wr);
3838 }
3839}
3840
3841static struct chcr_alg_template driver_algs[] = {
3842 /* AES-CBC */
3843 {
3844 .type = CRYPTO_ALG_TYPE_SKCIPHER | CRYPTO_ALG_SUB_TYPE_CBC,
3845 .is_registered = 0,
3846 .alg.skcipher = {
3847 .base.cra_name = "cbc(aes)",
3848 .base.cra_driver_name = "cbc-aes-chcr",
3849 .base.cra_blocksize = AES_BLOCK_SIZE,
3850
3851 .init = chcr_init_tfm,
3852 .exit = chcr_exit_tfm,
3853 .min_keysize = AES_MIN_KEY_SIZE,
3854 .max_keysize = AES_MAX_KEY_SIZE,
3855 .ivsize = AES_BLOCK_SIZE,
3856 .setkey = chcr_aes_cbc_setkey,
3857 .encrypt = chcr_aes_encrypt,
3858 .decrypt = chcr_aes_decrypt,
3859 }
3860 },
3861 {
3862 .type = CRYPTO_ALG_TYPE_SKCIPHER | CRYPTO_ALG_SUB_TYPE_XTS,
3863 .is_registered = 0,
3864 .alg.skcipher = {
3865 .base.cra_name = "xts(aes)",
3866 .base.cra_driver_name = "xts-aes-chcr",
3867 .base.cra_blocksize = AES_BLOCK_SIZE,
3868
3869 .init = chcr_init_tfm,
3870 .exit = chcr_exit_tfm,
3871 .min_keysize = 2 * AES_MIN_KEY_SIZE,
3872 .max_keysize = 2 * AES_MAX_KEY_SIZE,
3873 .ivsize = AES_BLOCK_SIZE,
3874 .setkey = chcr_aes_xts_setkey,
3875 .encrypt = chcr_aes_encrypt,
3876 .decrypt = chcr_aes_decrypt,
3877 }
3878 },
3879 {
3880 .type = CRYPTO_ALG_TYPE_SKCIPHER | CRYPTO_ALG_SUB_TYPE_CTR,
3881 .is_registered = 0,
3882 .alg.skcipher = {
3883 .base.cra_name = "ctr(aes)",
3884 .base.cra_driver_name = "ctr-aes-chcr",
3885 .base.cra_blocksize = 1,
3886
3887 .init = chcr_init_tfm,
3888 .exit = chcr_exit_tfm,
3889 .min_keysize = AES_MIN_KEY_SIZE,
3890 .max_keysize = AES_MAX_KEY_SIZE,
3891 .ivsize = AES_BLOCK_SIZE,
3892 .setkey = chcr_aes_ctr_setkey,
3893 .encrypt = chcr_aes_encrypt,
3894 .decrypt = chcr_aes_decrypt,
3895 }
3896 },
3897 {
3898 .type = CRYPTO_ALG_TYPE_SKCIPHER |
3899 CRYPTO_ALG_SUB_TYPE_CTR_RFC3686,
3900 .is_registered = 0,
3901 .alg.skcipher = {
3902 .base.cra_name = "rfc3686(ctr(aes))",
3903 .base.cra_driver_name = "rfc3686-ctr-aes-chcr",
3904 .base.cra_blocksize = 1,
3905
3906 .init = chcr_rfc3686_init,
3907 .exit = chcr_exit_tfm,
3908 .min_keysize = AES_MIN_KEY_SIZE + CTR_RFC3686_NONCE_SIZE,
3909 .max_keysize = AES_MAX_KEY_SIZE + CTR_RFC3686_NONCE_SIZE,
3910 .ivsize = CTR_RFC3686_IV_SIZE,
3911 .setkey = chcr_aes_rfc3686_setkey,
3912 .encrypt = chcr_aes_encrypt,
3913 .decrypt = chcr_aes_decrypt,
3914 }
3915 },
3916 /* SHA */
3917 {
3918 .type = CRYPTO_ALG_TYPE_AHASH,
3919 .is_registered = 0,
3920 .alg.hash = {
3921 .halg.digestsize = SHA1_DIGEST_SIZE,
3922 .halg.base = {
3923 .cra_name = "sha1",
3924 .cra_driver_name = "sha1-chcr",
3925 .cra_blocksize = SHA1_BLOCK_SIZE,
3926 }
3927 }
3928 },
3929 {
3930 .type = CRYPTO_ALG_TYPE_AHASH,
3931 .is_registered = 0,
3932 .alg.hash = {
3933 .halg.digestsize = SHA256_DIGEST_SIZE,
3934 .halg.base = {
3935 .cra_name = "sha256",
3936 .cra_driver_name = "sha256-chcr",
3937 .cra_blocksize = SHA256_BLOCK_SIZE,
3938 }
3939 }
3940 },
3941 {
3942 .type = CRYPTO_ALG_TYPE_AHASH,
3943 .is_registered = 0,
3944 .alg.hash = {
3945 .halg.digestsize = SHA224_DIGEST_SIZE,
3946 .halg.base = {
3947 .cra_name = "sha224",
3948 .cra_driver_name = "sha224-chcr",
3949 .cra_blocksize = SHA224_BLOCK_SIZE,
3950 }
3951 }
3952 },
3953 {
3954 .type = CRYPTO_ALG_TYPE_AHASH,
3955 .is_registered = 0,
3956 .alg.hash = {
3957 .halg.digestsize = SHA384_DIGEST_SIZE,
3958 .halg.base = {
3959 .cra_name = "sha384",
3960 .cra_driver_name = "sha384-chcr",
3961 .cra_blocksize = SHA384_BLOCK_SIZE,
3962 }
3963 }
3964 },
3965 {
3966 .type = CRYPTO_ALG_TYPE_AHASH,
3967 .is_registered = 0,
3968 .alg.hash = {
3969 .halg.digestsize = SHA512_DIGEST_SIZE,
3970 .halg.base = {
3971 .cra_name = "sha512",
3972 .cra_driver_name = "sha512-chcr",
3973 .cra_blocksize = SHA512_BLOCK_SIZE,
3974 }
3975 }
3976 },
3977 /* HMAC */
3978 {
3979 .type = CRYPTO_ALG_TYPE_HMAC,
3980 .is_registered = 0,
3981 .alg.hash = {
3982 .halg.digestsize = SHA1_DIGEST_SIZE,
3983 .halg.base = {
3984 .cra_name = "hmac(sha1)",
3985 .cra_driver_name = "hmac-sha1-chcr",
3986 .cra_blocksize = SHA1_BLOCK_SIZE,
3987 }
3988 }
3989 },
3990 {
3991 .type = CRYPTO_ALG_TYPE_HMAC,
3992 .is_registered = 0,
3993 .alg.hash = {
3994 .halg.digestsize = SHA224_DIGEST_SIZE,
3995 .halg.base = {
3996 .cra_name = "hmac(sha224)",
3997 .cra_driver_name = "hmac-sha224-chcr",
3998 .cra_blocksize = SHA224_BLOCK_SIZE,
3999 }
4000 }
4001 },
4002 {
4003 .type = CRYPTO_ALG_TYPE_HMAC,
4004 .is_registered = 0,
4005 .alg.hash = {
4006 .halg.digestsize = SHA256_DIGEST_SIZE,
4007 .halg.base = {
4008 .cra_name = "hmac(sha256)",
4009 .cra_driver_name = "hmac-sha256-chcr",
4010 .cra_blocksize = SHA256_BLOCK_SIZE,
4011 }
4012 }
4013 },
4014 {
4015 .type = CRYPTO_ALG_TYPE_HMAC,
4016 .is_registered = 0,
4017 .alg.hash = {
4018 .halg.digestsize = SHA384_DIGEST_SIZE,
4019 .halg.base = {
4020 .cra_name = "hmac(sha384)",
4021 .cra_driver_name = "hmac-sha384-chcr",
4022 .cra_blocksize = SHA384_BLOCK_SIZE,
4023 }
4024 }
4025 },
4026 {
4027 .type = CRYPTO_ALG_TYPE_HMAC,
4028 .is_registered = 0,
4029 .alg.hash = {
4030 .halg.digestsize = SHA512_DIGEST_SIZE,
4031 .halg.base = {
4032 .cra_name = "hmac(sha512)",
4033 .cra_driver_name = "hmac-sha512-chcr",
4034 .cra_blocksize = SHA512_BLOCK_SIZE,
4035 }
4036 }
4037 },
4038 /* Add AEAD Algorithms */
4039 {
4040 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_GCM,
4041 .is_registered = 0,
4042 .alg.aead = {
4043 .base = {
4044 .cra_name = "gcm(aes)",
4045 .cra_driver_name = "gcm-aes-chcr",
4046 .cra_blocksize = 1,
4047 .cra_priority = CHCR_AEAD_PRIORITY,
4048 .cra_ctxsize = sizeof(struct chcr_context) +
4049 sizeof(struct chcr_aead_ctx) +
4050 sizeof(struct chcr_gcm_ctx),
4051 },
4052 .ivsize = GCM_AES_IV_SIZE,
4053 .maxauthsize = GHASH_DIGEST_SIZE,
4054 .setkey = chcr_gcm_setkey,
4055 .setauthsize = chcr_gcm_setauthsize,
4056 }
4057 },
4058 {
4059 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106,
4060 .is_registered = 0,
4061 .alg.aead = {
4062 .base = {
4063 .cra_name = "rfc4106(gcm(aes))",
4064 .cra_driver_name = "rfc4106-gcm-aes-chcr",
4065 .cra_blocksize = 1,
4066 .cra_priority = CHCR_AEAD_PRIORITY + 1,
4067 .cra_ctxsize = sizeof(struct chcr_context) +
4068 sizeof(struct chcr_aead_ctx) +
4069 sizeof(struct chcr_gcm_ctx),
4070
4071 },
4072 .ivsize = GCM_RFC4106_IV_SIZE,
4073 .maxauthsize = GHASH_DIGEST_SIZE,
4074 .setkey = chcr_gcm_setkey,
4075 .setauthsize = chcr_4106_4309_setauthsize,
4076 }
4077 },
4078 {
4079 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_CCM,
4080 .is_registered = 0,
4081 .alg.aead = {
4082 .base = {
4083 .cra_name = "ccm(aes)",
4084 .cra_driver_name = "ccm-aes-chcr",
4085 .cra_blocksize = 1,
4086 .cra_priority = CHCR_AEAD_PRIORITY,
4087 .cra_ctxsize = sizeof(struct chcr_context) +
4088 sizeof(struct chcr_aead_ctx),
4089
4090 },
4091 .ivsize = AES_BLOCK_SIZE,
4092 .maxauthsize = GHASH_DIGEST_SIZE,
4093 .setkey = chcr_aead_ccm_setkey,
4094 .setauthsize = chcr_ccm_setauthsize,
4095 }
4096 },
4097 {
4098 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309,
4099 .is_registered = 0,
4100 .alg.aead = {
4101 .base = {
4102 .cra_name = "rfc4309(ccm(aes))",
4103 .cra_driver_name = "rfc4309-ccm-aes-chcr",
4104 .cra_blocksize = 1,
4105 .cra_priority = CHCR_AEAD_PRIORITY + 1,
4106 .cra_ctxsize = sizeof(struct chcr_context) +
4107 sizeof(struct chcr_aead_ctx),
4108
4109 },
4110 .ivsize = 8,
4111 .maxauthsize = GHASH_DIGEST_SIZE,
4112 .setkey = chcr_aead_rfc4309_setkey,
4113 .setauthsize = chcr_4106_4309_setauthsize,
4114 }
4115 },
4116 {
4117 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
4118 .is_registered = 0,
4119 .alg.aead = {
4120 .base = {
4121 .cra_name = "authenc(hmac(sha1),cbc(aes))",
4122 .cra_driver_name =
4123 "authenc-hmac-sha1-cbc-aes-chcr",
4124 .cra_blocksize = AES_BLOCK_SIZE,
4125 .cra_priority = CHCR_AEAD_PRIORITY,
4126 .cra_ctxsize = sizeof(struct chcr_context) +
4127 sizeof(struct chcr_aead_ctx) +
4128 sizeof(struct chcr_authenc_ctx),
4129
4130 },
4131 .ivsize = AES_BLOCK_SIZE,
4132 .maxauthsize = SHA1_DIGEST_SIZE,
4133 .setkey = chcr_authenc_setkey,
4134 .setauthsize = chcr_authenc_setauthsize,
4135 }
4136 },
4137 {
4138 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
4139 .is_registered = 0,
4140 .alg.aead = {
4141 .base = {
4142
4143 .cra_name = "authenc(hmac(sha256),cbc(aes))",
4144 .cra_driver_name =
4145 "authenc-hmac-sha256-cbc-aes-chcr",
4146 .cra_blocksize = AES_BLOCK_SIZE,
4147 .cra_priority = CHCR_AEAD_PRIORITY,
4148 .cra_ctxsize = sizeof(struct chcr_context) +
4149 sizeof(struct chcr_aead_ctx) +
4150 sizeof(struct chcr_authenc_ctx),
4151
4152 },
4153 .ivsize = AES_BLOCK_SIZE,
4154 .maxauthsize = SHA256_DIGEST_SIZE,
4155 .setkey = chcr_authenc_setkey,
4156 .setauthsize = chcr_authenc_setauthsize,
4157 }
4158 },
4159 {
4160 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
4161 .is_registered = 0,
4162 .alg.aead = {
4163 .base = {
4164 .cra_name = "authenc(hmac(sha224),cbc(aes))",
4165 .cra_driver_name =
4166 "authenc-hmac-sha224-cbc-aes-chcr",
4167 .cra_blocksize = AES_BLOCK_SIZE,
4168 .cra_priority = CHCR_AEAD_PRIORITY,
4169 .cra_ctxsize = sizeof(struct chcr_context) +
4170 sizeof(struct chcr_aead_ctx) +
4171 sizeof(struct chcr_authenc_ctx),
4172 },
4173 .ivsize = AES_BLOCK_SIZE,
4174 .maxauthsize = SHA224_DIGEST_SIZE,
4175 .setkey = chcr_authenc_setkey,
4176 .setauthsize = chcr_authenc_setauthsize,
4177 }
4178 },
4179 {
4180 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
4181 .is_registered = 0,
4182 .alg.aead = {
4183 .base = {
4184 .cra_name = "authenc(hmac(sha384),cbc(aes))",
4185 .cra_driver_name =
4186 "authenc-hmac-sha384-cbc-aes-chcr",
4187 .cra_blocksize = AES_BLOCK_SIZE,
4188 .cra_priority = CHCR_AEAD_PRIORITY,
4189 .cra_ctxsize = sizeof(struct chcr_context) +
4190 sizeof(struct chcr_aead_ctx) +
4191 sizeof(struct chcr_authenc_ctx),
4192
4193 },
4194 .ivsize = AES_BLOCK_SIZE,
4195 .maxauthsize = SHA384_DIGEST_SIZE,
4196 .setkey = chcr_authenc_setkey,
4197 .setauthsize = chcr_authenc_setauthsize,
4198 }
4199 },
4200 {
4201 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
4202 .is_registered = 0,
4203 .alg.aead = {
4204 .base = {
4205 .cra_name = "authenc(hmac(sha512),cbc(aes))",
4206 .cra_driver_name =
4207 "authenc-hmac-sha512-cbc-aes-chcr",
4208 .cra_blocksize = AES_BLOCK_SIZE,
4209 .cra_priority = CHCR_AEAD_PRIORITY,
4210 .cra_ctxsize = sizeof(struct chcr_context) +
4211 sizeof(struct chcr_aead_ctx) +
4212 sizeof(struct chcr_authenc_ctx),
4213
4214 },
4215 .ivsize = AES_BLOCK_SIZE,
4216 .maxauthsize = SHA512_DIGEST_SIZE,
4217 .setkey = chcr_authenc_setkey,
4218 .setauthsize = chcr_authenc_setauthsize,
4219 }
4220 },
4221 {
4222 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_NULL,
4223 .is_registered = 0,
4224 .alg.aead = {
4225 .base = {
4226 .cra_name = "authenc(digest_null,cbc(aes))",
4227 .cra_driver_name =
4228 "authenc-digest_null-cbc-aes-chcr",
4229 .cra_blocksize = AES_BLOCK_SIZE,
4230 .cra_priority = CHCR_AEAD_PRIORITY,
4231 .cra_ctxsize = sizeof(struct chcr_context) +
4232 sizeof(struct chcr_aead_ctx) +
4233 sizeof(struct chcr_authenc_ctx),
4234
4235 },
4236 .ivsize = AES_BLOCK_SIZE,
4237 .maxauthsize = 0,
4238 .setkey = chcr_aead_digest_null_setkey,
4239 .setauthsize = chcr_authenc_null_setauthsize,
4240 }
4241 },
4242 {
4243 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4244 .is_registered = 0,
4245 .alg.aead = {
4246 .base = {
4247 .cra_name = "authenc(hmac(sha1),rfc3686(ctr(aes)))",
4248 .cra_driver_name =
4249 "authenc-hmac-sha1-rfc3686-ctr-aes-chcr",
4250 .cra_blocksize = 1,
4251 .cra_priority = CHCR_AEAD_PRIORITY,
4252 .cra_ctxsize = sizeof(struct chcr_context) +
4253 sizeof(struct chcr_aead_ctx) +
4254 sizeof(struct chcr_authenc_ctx),
4255
4256 },
4257 .ivsize = CTR_RFC3686_IV_SIZE,
4258 .maxauthsize = SHA1_DIGEST_SIZE,
4259 .setkey = chcr_authenc_setkey,
4260 .setauthsize = chcr_authenc_setauthsize,
4261 }
4262 },
4263 {
4264 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4265 .is_registered = 0,
4266 .alg.aead = {
4267 .base = {
4268
4269 .cra_name = "authenc(hmac(sha256),rfc3686(ctr(aes)))",
4270 .cra_driver_name =
4271 "authenc-hmac-sha256-rfc3686-ctr-aes-chcr",
4272 .cra_blocksize = 1,
4273 .cra_priority = CHCR_AEAD_PRIORITY,
4274 .cra_ctxsize = sizeof(struct chcr_context) +
4275 sizeof(struct chcr_aead_ctx) +
4276 sizeof(struct chcr_authenc_ctx),
4277
4278 },
4279 .ivsize = CTR_RFC3686_IV_SIZE,
4280 .maxauthsize = SHA256_DIGEST_SIZE,
4281 .setkey = chcr_authenc_setkey,
4282 .setauthsize = chcr_authenc_setauthsize,
4283 }
4284 },
4285 {
4286 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4287 .is_registered = 0,
4288 .alg.aead = {
4289 .base = {
4290 .cra_name = "authenc(hmac(sha224),rfc3686(ctr(aes)))",
4291 .cra_driver_name =
4292 "authenc-hmac-sha224-rfc3686-ctr-aes-chcr",
4293 .cra_blocksize = 1,
4294 .cra_priority = CHCR_AEAD_PRIORITY,
4295 .cra_ctxsize = sizeof(struct chcr_context) +
4296 sizeof(struct chcr_aead_ctx) +
4297 sizeof(struct chcr_authenc_ctx),
4298 },
4299 .ivsize = CTR_RFC3686_IV_SIZE,
4300 .maxauthsize = SHA224_DIGEST_SIZE,
4301 .setkey = chcr_authenc_setkey,
4302 .setauthsize = chcr_authenc_setauthsize,
4303 }
4304 },
4305 {
4306 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4307 .is_registered = 0,
4308 .alg.aead = {
4309 .base = {
4310 .cra_name = "authenc(hmac(sha384),rfc3686(ctr(aes)))",
4311 .cra_driver_name =
4312 "authenc-hmac-sha384-rfc3686-ctr-aes-chcr",
4313 .cra_blocksize = 1,
4314 .cra_priority = CHCR_AEAD_PRIORITY,
4315 .cra_ctxsize = sizeof(struct chcr_context) +
4316 sizeof(struct chcr_aead_ctx) +
4317 sizeof(struct chcr_authenc_ctx),
4318
4319 },
4320 .ivsize = CTR_RFC3686_IV_SIZE,
4321 .maxauthsize = SHA384_DIGEST_SIZE,
4322 .setkey = chcr_authenc_setkey,
4323 .setauthsize = chcr_authenc_setauthsize,
4324 }
4325 },
4326 {
4327 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4328 .is_registered = 0,
4329 .alg.aead = {
4330 .base = {
4331 .cra_name = "authenc(hmac(sha512),rfc3686(ctr(aes)))",
4332 .cra_driver_name =
4333 "authenc-hmac-sha512-rfc3686-ctr-aes-chcr",
4334 .cra_blocksize = 1,
4335 .cra_priority = CHCR_AEAD_PRIORITY,
4336 .cra_ctxsize = sizeof(struct chcr_context) +
4337 sizeof(struct chcr_aead_ctx) +
4338 sizeof(struct chcr_authenc_ctx),
4339
4340 },
4341 .ivsize = CTR_RFC3686_IV_SIZE,
4342 .maxauthsize = SHA512_DIGEST_SIZE,
4343 .setkey = chcr_authenc_setkey,
4344 .setauthsize = chcr_authenc_setauthsize,
4345 }
4346 },
4347 {
4348 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_NULL,
4349 .is_registered = 0,
4350 .alg.aead = {
4351 .base = {
4352 .cra_name = "authenc(digest_null,rfc3686(ctr(aes)))",
4353 .cra_driver_name =
4354 "authenc-digest_null-rfc3686-ctr-aes-chcr",
4355 .cra_blocksize = 1,
4356 .cra_priority = CHCR_AEAD_PRIORITY,
4357 .cra_ctxsize = sizeof(struct chcr_context) +
4358 sizeof(struct chcr_aead_ctx) +
4359 sizeof(struct chcr_authenc_ctx),
4360
4361 },
4362 .ivsize = CTR_RFC3686_IV_SIZE,
4363 .maxauthsize = 0,
4364 .setkey = chcr_aead_digest_null_setkey,
4365 .setauthsize = chcr_authenc_null_setauthsize,
4366 }
4367 },
4368};
4369
4370/*
4371 * chcr_unregister_alg - Deregister crypto algorithms with
4372 * kernel framework.
4373 */
4374static int chcr_unregister_alg(void)
4375{
4376 int i;
4377
4378 for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
4379 switch (driver_algs[i].type & CRYPTO_ALG_TYPE_MASK) {
4380 case CRYPTO_ALG_TYPE_SKCIPHER:
4381 if (driver_algs[i].is_registered && refcount_read(
4382 &driver_algs[i].alg.skcipher.base.cra_refcnt)
4383 == 1) {
4384 crypto_unregister_skcipher(
4385 &driver_algs[i].alg.skcipher);
4386 driver_algs[i].is_registered = 0;
4387 }
4388 break;
4389 case CRYPTO_ALG_TYPE_AEAD:
4390 if (driver_algs[i].is_registered && refcount_read(
4391 &driver_algs[i].alg.aead.base.cra_refcnt) == 1) {
4392 crypto_unregister_aead(
4393 &driver_algs[i].alg.aead);
4394 driver_algs[i].is_registered = 0;
4395 }
4396 break;
4397 case CRYPTO_ALG_TYPE_AHASH:
4398 if (driver_algs[i].is_registered && refcount_read(
4399 &driver_algs[i].alg.hash.halg.base.cra_refcnt)
4400 == 1) {
4401 crypto_unregister_ahash(
4402 &driver_algs[i].alg.hash);
4403 driver_algs[i].is_registered = 0;
4404 }
4405 break;
4406 }
4407 }
4408 return 0;
4409}
4410
4411#define SZ_AHASH_CTX sizeof(struct chcr_context)
4412#define SZ_AHASH_H_CTX (sizeof(struct chcr_context) + sizeof(struct hmac_ctx))
4413#define SZ_AHASH_REQ_CTX sizeof(struct chcr_ahash_req_ctx)
4414
4415/*
4416 * chcr_register_alg - Register crypto algorithms with kernel framework.
4417 */
4418static int chcr_register_alg(void)
4419{
4420 struct crypto_alg ai;
4421 struct ahash_alg *a_hash;
4422 int err = 0, i;
4423 char *name = NULL;
4424
4425 for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
4426 if (driver_algs[i].is_registered)
4427 continue;
4428 switch (driver_algs[i].type & CRYPTO_ALG_TYPE_MASK) {
4429 case CRYPTO_ALG_TYPE_SKCIPHER:
4430 driver_algs[i].alg.skcipher.base.cra_priority =
4431 CHCR_CRA_PRIORITY;
4432 driver_algs[i].alg.skcipher.base.cra_module = THIS_MODULE;
4433 driver_algs[i].alg.skcipher.base.cra_flags =
4434 CRYPTO_ALG_TYPE_SKCIPHER | CRYPTO_ALG_ASYNC |
4435 CRYPTO_ALG_ALLOCATES_MEMORY |
4436 CRYPTO_ALG_NEED_FALLBACK;
4437 driver_algs[i].alg.skcipher.base.cra_ctxsize =
4438 sizeof(struct chcr_context) +
4439 sizeof(struct ablk_ctx);
4440 driver_algs[i].alg.skcipher.base.cra_alignmask = 0;
4441
4442 err = crypto_register_skcipher(&driver_algs[i].alg.skcipher);
4443 name = driver_algs[i].alg.skcipher.base.cra_driver_name;
4444 break;
4445 case CRYPTO_ALG_TYPE_AEAD:
4446 driver_algs[i].alg.aead.base.cra_flags =
4447 CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK |
4448 CRYPTO_ALG_ALLOCATES_MEMORY;
4449 driver_algs[i].alg.aead.encrypt = chcr_aead_encrypt;
4450 driver_algs[i].alg.aead.decrypt = chcr_aead_decrypt;
4451 driver_algs[i].alg.aead.init = chcr_aead_cra_init;
4452 driver_algs[i].alg.aead.exit = chcr_aead_cra_exit;
4453 driver_algs[i].alg.aead.base.cra_module = THIS_MODULE;
4454 err = crypto_register_aead(&driver_algs[i].alg.aead);
4455 name = driver_algs[i].alg.aead.base.cra_driver_name;
4456 break;
4457 case CRYPTO_ALG_TYPE_AHASH:
4458 a_hash = &driver_algs[i].alg.hash;
4459 a_hash->update = chcr_ahash_update;
4460 a_hash->final = chcr_ahash_final;
4461 a_hash->finup = chcr_ahash_finup;
4462 a_hash->digest = chcr_ahash_digest;
4463 a_hash->export = chcr_ahash_export;
4464 a_hash->import = chcr_ahash_import;
4465 a_hash->halg.statesize = SZ_AHASH_REQ_CTX;
4466 a_hash->halg.base.cra_priority = CHCR_CRA_PRIORITY;
4467 a_hash->halg.base.cra_module = THIS_MODULE;
4468 a_hash->halg.base.cra_flags =
4469 CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY;
4470 a_hash->halg.base.cra_alignmask = 0;
4471 a_hash->halg.base.cra_exit = NULL;
4472
4473 if (driver_algs[i].type == CRYPTO_ALG_TYPE_HMAC) {
4474 a_hash->halg.base.cra_init = chcr_hmac_cra_init;
4475 a_hash->halg.base.cra_exit = chcr_hmac_cra_exit;
4476 a_hash->init = chcr_hmac_init;
4477 a_hash->setkey = chcr_ahash_setkey;
4478 a_hash->halg.base.cra_ctxsize = SZ_AHASH_H_CTX;
4479 } else {
4480 a_hash->init = chcr_sha_init;
4481 a_hash->halg.base.cra_ctxsize = SZ_AHASH_CTX;
4482 a_hash->halg.base.cra_init = chcr_sha_cra_init;
4483 }
4484 err = crypto_register_ahash(&driver_algs[i].alg.hash);
4485 ai = driver_algs[i].alg.hash.halg.base;
4486 name = ai.cra_driver_name;
4487 break;
4488 }
4489 if (err) {
4490 pr_err("%s : Algorithm registration failed\n", name);
4491 goto register_err;
4492 } else {
4493 driver_algs[i].is_registered = 1;
4494 }
4495 }
4496 return 0;
4497
4498register_err:
4499 chcr_unregister_alg();
4500 return err;
4501}
4502
4503/*
4504 * start_crypto - Register the crypto algorithms.
4505 * This should called once when the first device comesup. After this
4506 * kernel will start calling driver APIs for crypto operations.
4507 */
4508int start_crypto(void)
4509{
4510 return chcr_register_alg();
4511}
4512
4513/*
4514 * stop_crypto - Deregister all the crypto algorithms with kernel.
4515 * This should be called once when the last device goes down. After this
4516 * kernel will not call the driver API for crypto operations.
4517 */
4518int stop_crypto(void)
4519{
4520 chcr_unregister_alg();
4521 return 0;
4522}
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
76static unsigned int sgl_ent_len[] = {
77 0, 0, 16, 24, 40, 48, 64, 72, 88,
78 96, 112, 120, 136, 144, 160, 168, 184,
79 192, 208, 216, 232, 240, 256, 264, 280,
80 288, 304, 312, 328, 336, 352, 360, 376
81};
82
83static unsigned int dsgl_ent_len[] = {
84 0, 32, 32, 48, 48, 64, 64, 80, 80,
85 112, 112, 128, 128, 144, 144, 160, 160,
86 192, 192, 208, 208, 224, 224, 240, 240,
87 272, 272, 288, 288, 304, 304, 320, 320
88};
89
90static u32 round_constant[11] = {
91 0x01000000, 0x02000000, 0x04000000, 0x08000000,
92 0x10000000, 0x20000000, 0x40000000, 0x80000000,
93 0x1B000000, 0x36000000, 0x6C000000
94};
95
96static int chcr_handle_cipher_resp(struct ablkcipher_request *req,
97 unsigned char *input, int err);
98
99static inline struct chcr_aead_ctx *AEAD_CTX(struct chcr_context *ctx)
100{
101 return ctx->crypto_ctx->aeadctx;
102}
103
104static inline struct ablk_ctx *ABLK_CTX(struct chcr_context *ctx)
105{
106 return ctx->crypto_ctx->ablkctx;
107}
108
109static inline struct hmac_ctx *HMAC_CTX(struct chcr_context *ctx)
110{
111 return ctx->crypto_ctx->hmacctx;
112}
113
114static inline struct chcr_gcm_ctx *GCM_CTX(struct chcr_aead_ctx *gctx)
115{
116 return gctx->ctx->gcm;
117}
118
119static inline struct chcr_authenc_ctx *AUTHENC_CTX(struct chcr_aead_ctx *gctx)
120{
121 return gctx->ctx->authenc;
122}
123
124static inline struct uld_ctx *ULD_CTX(struct chcr_context *ctx)
125{
126 return ctx->dev->u_ctx;
127}
128
129static inline int is_ofld_imm(const struct sk_buff *skb)
130{
131 return (skb->len <= SGE_MAX_WR_LEN);
132}
133
134static inline void chcr_init_hctx_per_wr(struct chcr_ahash_req_ctx *reqctx)
135{
136 memset(&reqctx->hctx_wr, 0, sizeof(struct chcr_hctx_per_wr));
137}
138
139static 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
168static 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
176void 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
201static inline void chcr_handle_aead_resp(struct aead_request *req,
202 unsigned char *input,
203 int err)
204{
205 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
206 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
207 struct uld_ctx *u_ctx = ULD_CTX(a_ctx(tfm));
208
209 chcr_aead_dma_unmap(&u_ctx->lldi.pdev->dev, req, reqctx->op);
210 if (reqctx->b0_dma)
211 dma_unmap_single(&u_ctx->lldi.pdev->dev, reqctx->b0_dma,
212 reqctx->b0_len, DMA_BIDIRECTIONAL);
213 if (reqctx->verify == VERIFY_SW) {
214 chcr_verify_tag(req, input, &err);
215 reqctx->verify = VERIFY_HW;
216 }
217 req->base.complete(&req->base, err);
218}
219
220static void get_aes_decrypt_key(unsigned char *dec_key,
221 const unsigned char *key,
222 unsigned int keylength)
223{
224 u32 temp;
225 u32 w_ring[MAX_NK];
226 int i, j, k;
227 u8 nr, nk;
228
229 switch (keylength) {
230 case AES_KEYLENGTH_128BIT:
231 nk = KEYLENGTH_4BYTES;
232 nr = NUMBER_OF_ROUNDS_10;
233 break;
234 case AES_KEYLENGTH_192BIT:
235 nk = KEYLENGTH_6BYTES;
236 nr = NUMBER_OF_ROUNDS_12;
237 break;
238 case AES_KEYLENGTH_256BIT:
239 nk = KEYLENGTH_8BYTES;
240 nr = NUMBER_OF_ROUNDS_14;
241 break;
242 default:
243 return;
244 }
245 for (i = 0; i < nk; i++)
246 w_ring[i] = be32_to_cpu(*(u32 *)&key[4 * i]);
247
248 i = 0;
249 temp = w_ring[nk - 1];
250 while (i + nk < (nr + 1) * 4) {
251 if (!(i % nk)) {
252 /* RotWord(temp) */
253 temp = (temp << 8) | (temp >> 24);
254 temp = aes_ks_subword(temp);
255 temp ^= round_constant[i / nk];
256 } else if (nk == 8 && (i % 4 == 0)) {
257 temp = aes_ks_subword(temp);
258 }
259 w_ring[i % nk] ^= temp;
260 temp = w_ring[i % nk];
261 i++;
262 }
263 i--;
264 for (k = 0, j = i % nk; k < nk; k++) {
265 *((u32 *)dec_key + k) = htonl(w_ring[j]);
266 j--;
267 if (j < 0)
268 j += nk;
269 }
270}
271
272static struct crypto_shash *chcr_alloc_shash(unsigned int ds)
273{
274 struct crypto_shash *base_hash = ERR_PTR(-EINVAL);
275
276 switch (ds) {
277 case SHA1_DIGEST_SIZE:
278 base_hash = crypto_alloc_shash("sha1", 0, 0);
279 break;
280 case SHA224_DIGEST_SIZE:
281 base_hash = crypto_alloc_shash("sha224", 0, 0);
282 break;
283 case SHA256_DIGEST_SIZE:
284 base_hash = crypto_alloc_shash("sha256", 0, 0);
285 break;
286 case SHA384_DIGEST_SIZE:
287 base_hash = crypto_alloc_shash("sha384", 0, 0);
288 break;
289 case SHA512_DIGEST_SIZE:
290 base_hash = crypto_alloc_shash("sha512", 0, 0);
291 break;
292 }
293
294 return base_hash;
295}
296
297static int chcr_compute_partial_hash(struct shash_desc *desc,
298 char *iopad, char *result_hash,
299 int digest_size)
300{
301 struct sha1_state sha1_st;
302 struct sha256_state sha256_st;
303 struct sha512_state sha512_st;
304 int error;
305
306 if (digest_size == SHA1_DIGEST_SIZE) {
307 error = crypto_shash_init(desc) ?:
308 crypto_shash_update(desc, iopad, SHA1_BLOCK_SIZE) ?:
309 crypto_shash_export(desc, (void *)&sha1_st);
310 memcpy(result_hash, sha1_st.state, SHA1_DIGEST_SIZE);
311 } else if (digest_size == SHA224_DIGEST_SIZE) {
312 error = crypto_shash_init(desc) ?:
313 crypto_shash_update(desc, iopad, SHA256_BLOCK_SIZE) ?:
314 crypto_shash_export(desc, (void *)&sha256_st);
315 memcpy(result_hash, sha256_st.state, SHA256_DIGEST_SIZE);
316
317 } else if (digest_size == SHA256_DIGEST_SIZE) {
318 error = crypto_shash_init(desc) ?:
319 crypto_shash_update(desc, iopad, SHA256_BLOCK_SIZE) ?:
320 crypto_shash_export(desc, (void *)&sha256_st);
321 memcpy(result_hash, sha256_st.state, SHA256_DIGEST_SIZE);
322
323 } else if (digest_size == SHA384_DIGEST_SIZE) {
324 error = crypto_shash_init(desc) ?:
325 crypto_shash_update(desc, iopad, SHA512_BLOCK_SIZE) ?:
326 crypto_shash_export(desc, (void *)&sha512_st);
327 memcpy(result_hash, sha512_st.state, SHA512_DIGEST_SIZE);
328
329 } else if (digest_size == SHA512_DIGEST_SIZE) {
330 error = crypto_shash_init(desc) ?:
331 crypto_shash_update(desc, iopad, SHA512_BLOCK_SIZE) ?:
332 crypto_shash_export(desc, (void *)&sha512_st);
333 memcpy(result_hash, sha512_st.state, SHA512_DIGEST_SIZE);
334 } else {
335 error = -EINVAL;
336 pr_err("Unknown digest size %d\n", digest_size);
337 }
338 return error;
339}
340
341static void chcr_change_order(char *buf, int ds)
342{
343 int i;
344
345 if (ds == SHA512_DIGEST_SIZE) {
346 for (i = 0; i < (ds / sizeof(u64)); i++)
347 *((__be64 *)buf + i) =
348 cpu_to_be64(*((u64 *)buf + i));
349 } else {
350 for (i = 0; i < (ds / sizeof(u32)); i++)
351 *((__be32 *)buf + i) =
352 cpu_to_be32(*((u32 *)buf + i));
353 }
354}
355
356static inline int is_hmac(struct crypto_tfm *tfm)
357{
358 struct crypto_alg *alg = tfm->__crt_alg;
359 struct chcr_alg_template *chcr_crypto_alg =
360 container_of(__crypto_ahash_alg(alg), struct chcr_alg_template,
361 alg.hash);
362 if (chcr_crypto_alg->type == CRYPTO_ALG_TYPE_HMAC)
363 return 1;
364 return 0;
365}
366
367static inline void dsgl_walk_init(struct dsgl_walk *walk,
368 struct cpl_rx_phys_dsgl *dsgl)
369{
370 walk->dsgl = dsgl;
371 walk->nents = 0;
372 walk->to = (struct phys_sge_pairs *)(dsgl + 1);
373}
374
375static inline void dsgl_walk_end(struct dsgl_walk *walk, unsigned short qid)
376{
377 struct cpl_rx_phys_dsgl *phys_cpl;
378
379 phys_cpl = walk->dsgl;
380
381 phys_cpl->op_to_tid = htonl(CPL_RX_PHYS_DSGL_OPCODE_V(CPL_RX_PHYS_DSGL)
382 | CPL_RX_PHYS_DSGL_ISRDMA_V(0));
383 phys_cpl->pcirlxorder_to_noofsgentr =
384 htonl(CPL_RX_PHYS_DSGL_PCIRLXORDER_V(0) |
385 CPL_RX_PHYS_DSGL_PCINOSNOOP_V(0) |
386 CPL_RX_PHYS_DSGL_PCITPHNTENB_V(0) |
387 CPL_RX_PHYS_DSGL_PCITPHNT_V(0) |
388 CPL_RX_PHYS_DSGL_DCAID_V(0) |
389 CPL_RX_PHYS_DSGL_NOOFSGENTR_V(walk->nents));
390 phys_cpl->rss_hdr_int.opcode = CPL_RX_PHYS_ADDR;
391 phys_cpl->rss_hdr_int.qid = htons(qid);
392 phys_cpl->rss_hdr_int.hash_val = 0;
393}
394
395static inline void dsgl_walk_add_page(struct dsgl_walk *walk,
396 size_t size,
397 dma_addr_t *addr)
398{
399 int j;
400
401 if (!size)
402 return;
403 j = walk->nents;
404 walk->to->len[j % 8] = htons(size);
405 walk->to->addr[j % 8] = cpu_to_be64(*addr);
406 j++;
407 if ((j % 8) == 0)
408 walk->to++;
409 walk->nents = j;
410}
411
412static void dsgl_walk_add_sg(struct dsgl_walk *walk,
413 struct scatterlist *sg,
414 unsigned int slen,
415 unsigned int skip)
416{
417 int skip_len = 0;
418 unsigned int left_size = slen, len = 0;
419 unsigned int j = walk->nents;
420 int offset, ent_len;
421
422 if (!slen)
423 return;
424 while (sg && skip) {
425 if (sg_dma_len(sg) <= skip) {
426 skip -= sg_dma_len(sg);
427 skip_len = 0;
428 sg = sg_next(sg);
429 } else {
430 skip_len = skip;
431 skip = 0;
432 }
433 }
434
435 while (left_size && sg) {
436 len = min_t(u32, left_size, sg_dma_len(sg) - skip_len);
437 offset = 0;
438 while (len) {
439 ent_len = min_t(u32, len, CHCR_DST_SG_SIZE);
440 walk->to->len[j % 8] = htons(ent_len);
441 walk->to->addr[j % 8] = cpu_to_be64(sg_dma_address(sg) +
442 offset + skip_len);
443 offset += ent_len;
444 len -= ent_len;
445 j++;
446 if ((j % 8) == 0)
447 walk->to++;
448 }
449 walk->last_sg = sg;
450 walk->last_sg_len = min_t(u32, left_size, sg_dma_len(sg) -
451 skip_len) + skip_len;
452 left_size -= min_t(u32, left_size, sg_dma_len(sg) - skip_len);
453 skip_len = 0;
454 sg = sg_next(sg);
455 }
456 walk->nents = j;
457}
458
459static inline void ulptx_walk_init(struct ulptx_walk *walk,
460 struct ulptx_sgl *ulp)
461{
462 walk->sgl = ulp;
463 walk->nents = 0;
464 walk->pair_idx = 0;
465 walk->pair = ulp->sge;
466 walk->last_sg = NULL;
467 walk->last_sg_len = 0;
468}
469
470static inline void ulptx_walk_end(struct ulptx_walk *walk)
471{
472 walk->sgl->cmd_nsge = htonl(ULPTX_CMD_V(ULP_TX_SC_DSGL) |
473 ULPTX_NSGE_V(walk->nents));
474}
475
476
477static inline void ulptx_walk_add_page(struct ulptx_walk *walk,
478 size_t size,
479 dma_addr_t *addr)
480{
481 if (!size)
482 return;
483
484 if (walk->nents == 0) {
485 walk->sgl->len0 = cpu_to_be32(size);
486 walk->sgl->addr0 = cpu_to_be64(*addr);
487 } else {
488 walk->pair->addr[walk->pair_idx] = cpu_to_be64(*addr);
489 walk->pair->len[walk->pair_idx] = cpu_to_be32(size);
490 walk->pair_idx = !walk->pair_idx;
491 if (!walk->pair_idx)
492 walk->pair++;
493 }
494 walk->nents++;
495}
496
497static void ulptx_walk_add_sg(struct ulptx_walk *walk,
498 struct scatterlist *sg,
499 unsigned int len,
500 unsigned int skip)
501{
502 int small;
503 int skip_len = 0;
504 unsigned int sgmin;
505
506 if (!len)
507 return;
508 while (sg && skip) {
509 if (sg_dma_len(sg) <= skip) {
510 skip -= sg_dma_len(sg);
511 skip_len = 0;
512 sg = sg_next(sg);
513 } else {
514 skip_len = skip;
515 skip = 0;
516 }
517 }
518 WARN(!sg, "SG should not be null here\n");
519 if (sg && (walk->nents == 0)) {
520 small = min_t(unsigned int, sg_dma_len(sg) - skip_len, len);
521 sgmin = min_t(unsigned int, small, CHCR_SRC_SG_SIZE);
522 walk->sgl->len0 = cpu_to_be32(sgmin);
523 walk->sgl->addr0 = cpu_to_be64(sg_dma_address(sg) + skip_len);
524 walk->nents++;
525 len -= sgmin;
526 walk->last_sg = sg;
527 walk->last_sg_len = sgmin + skip_len;
528 skip_len += sgmin;
529 if (sg_dma_len(sg) == skip_len) {
530 sg = sg_next(sg);
531 skip_len = 0;
532 }
533 }
534
535 while (sg && len) {
536 small = min(sg_dma_len(sg) - skip_len, len);
537 sgmin = min_t(unsigned int, small, CHCR_SRC_SG_SIZE);
538 walk->pair->len[walk->pair_idx] = cpu_to_be32(sgmin);
539 walk->pair->addr[walk->pair_idx] =
540 cpu_to_be64(sg_dma_address(sg) + skip_len);
541 walk->pair_idx = !walk->pair_idx;
542 walk->nents++;
543 if (!walk->pair_idx)
544 walk->pair++;
545 len -= sgmin;
546 skip_len += sgmin;
547 walk->last_sg = sg;
548 walk->last_sg_len = skip_len;
549 if (sg_dma_len(sg) == skip_len) {
550 sg = sg_next(sg);
551 skip_len = 0;
552 }
553 }
554}
555
556static inline int get_cryptoalg_subtype(struct crypto_tfm *tfm)
557{
558 struct crypto_alg *alg = tfm->__crt_alg;
559 struct chcr_alg_template *chcr_crypto_alg =
560 container_of(alg, struct chcr_alg_template, alg.crypto);
561
562 return chcr_crypto_alg->type & CRYPTO_ALG_SUB_TYPE_MASK;
563}
564
565static int cxgb4_is_crypto_q_full(struct net_device *dev, unsigned int idx)
566{
567 struct adapter *adap = netdev2adap(dev);
568 struct sge_uld_txq_info *txq_info =
569 adap->sge.uld_txq_info[CXGB4_TX_CRYPTO];
570 struct sge_uld_txq *txq;
571 int ret = 0;
572
573 local_bh_disable();
574 txq = &txq_info->uldtxq[idx];
575 spin_lock(&txq->sendq.lock);
576 if (txq->full)
577 ret = -1;
578 spin_unlock(&txq->sendq.lock);
579 local_bh_enable();
580 return ret;
581}
582
583static int generate_copy_rrkey(struct ablk_ctx *ablkctx,
584 struct _key_ctx *key_ctx)
585{
586 if (ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC) {
587 memcpy(key_ctx->key, ablkctx->rrkey, ablkctx->enckey_len);
588 } else {
589 memcpy(key_ctx->key,
590 ablkctx->key + (ablkctx->enckey_len >> 1),
591 ablkctx->enckey_len >> 1);
592 memcpy(key_ctx->key + (ablkctx->enckey_len >> 1),
593 ablkctx->rrkey, ablkctx->enckey_len >> 1);
594 }
595 return 0;
596}
597
598static int chcr_hash_ent_in_wr(struct scatterlist *src,
599 unsigned int minsg,
600 unsigned int space,
601 unsigned int srcskip)
602{
603 int srclen = 0;
604 int srcsg = minsg;
605 int soffset = 0, sless;
606
607 if (sg_dma_len(src) == srcskip) {
608 src = sg_next(src);
609 srcskip = 0;
610 }
611 while (src && space > (sgl_ent_len[srcsg + 1])) {
612 sless = min_t(unsigned int, sg_dma_len(src) - soffset - srcskip,
613 CHCR_SRC_SG_SIZE);
614 srclen += sless;
615 soffset += sless;
616 srcsg++;
617 if (sg_dma_len(src) == (soffset + srcskip)) {
618 src = sg_next(src);
619 soffset = 0;
620 srcskip = 0;
621 }
622 }
623 return srclen;
624}
625
626static int chcr_sg_ent_in_wr(struct scatterlist *src,
627 struct scatterlist *dst,
628 unsigned int minsg,
629 unsigned int space,
630 unsigned int srcskip,
631 unsigned int dstskip)
632{
633 int srclen = 0, dstlen = 0;
634 int srcsg = minsg, dstsg = minsg;
635 int offset = 0, soffset = 0, less, sless = 0;
636
637 if (sg_dma_len(src) == srcskip) {
638 src = sg_next(src);
639 srcskip = 0;
640 }
641
642 if (sg_dma_len(dst) == dstskip) {
643 dst = sg_next(dst);
644 dstskip = 0;
645 }
646
647 while (src && dst &&
648 space > (sgl_ent_len[srcsg + 1] + dsgl_ent_len[dstsg])) {
649 sless = min_t(unsigned int, sg_dma_len(src) - srcskip - soffset,
650 CHCR_SRC_SG_SIZE);
651 srclen += sless;
652 srcsg++;
653 offset = 0;
654 while (dst && ((dstsg + 1) <= MAX_DSGL_ENT) &&
655 space > (sgl_ent_len[srcsg] + dsgl_ent_len[dstsg + 1])) {
656 if (srclen <= dstlen)
657 break;
658 less = min_t(unsigned int, sg_dma_len(dst) - offset -
659 dstskip, CHCR_DST_SG_SIZE);
660 dstlen += less;
661 offset += less;
662 if ((offset + dstskip) == sg_dma_len(dst)) {
663 dst = sg_next(dst);
664 offset = 0;
665 }
666 dstsg++;
667 dstskip = 0;
668 }
669 soffset += sless;
670 if ((soffset + srcskip) == sg_dma_len(src)) {
671 src = sg_next(src);
672 srcskip = 0;
673 soffset = 0;
674 }
675
676 }
677 return min(srclen, dstlen);
678}
679
680static int chcr_cipher_fallback(struct crypto_skcipher *cipher,
681 u32 flags,
682 struct scatterlist *src,
683 struct scatterlist *dst,
684 unsigned int nbytes,
685 u8 *iv,
686 unsigned short op_type)
687{
688 int err;
689
690 SKCIPHER_REQUEST_ON_STACK(subreq, cipher);
691 skcipher_request_set_tfm(subreq, cipher);
692 skcipher_request_set_callback(subreq, flags, NULL, NULL);
693 skcipher_request_set_crypt(subreq, src, dst,
694 nbytes, iv);
695
696 err = op_type ? crypto_skcipher_decrypt(subreq) :
697 crypto_skcipher_encrypt(subreq);
698 skcipher_request_zero(subreq);
699
700 return err;
701
702}
703static inline void create_wreq(struct chcr_context *ctx,
704 struct chcr_wr *chcr_req,
705 struct crypto_async_request *req,
706 unsigned int imm,
707 int hash_sz,
708 unsigned int len16,
709 unsigned int sc_len,
710 unsigned int lcb)
711{
712 struct uld_ctx *u_ctx = ULD_CTX(ctx);
713 int qid = u_ctx->lldi.rxq_ids[ctx->rx_qidx];
714
715
716 chcr_req->wreq.op_to_cctx_size = FILL_WR_OP_CCTX_SIZE;
717 chcr_req->wreq.pld_size_hash_size =
718 htonl(FW_CRYPTO_LOOKASIDE_WR_HASH_SIZE_V(hash_sz));
719 chcr_req->wreq.len16_pkd =
720 htonl(FW_CRYPTO_LOOKASIDE_WR_LEN16_V(DIV_ROUND_UP(len16, 16)));
721 chcr_req->wreq.cookie = cpu_to_be64((uintptr_t)req);
722 chcr_req->wreq.rx_chid_to_rx_q_id =
723 FILL_WR_RX_Q_ID(ctx->dev->rx_channel_id, qid,
724 !!lcb, ctx->tx_qidx);
725
726 chcr_req->ulptx.cmd_dest = FILL_ULPTX_CMD_DEST(ctx->dev->tx_channel_id,
727 qid);
728 chcr_req->ulptx.len = htonl((DIV_ROUND_UP(len16, 16) -
729 ((sizeof(chcr_req->wreq)) >> 4)));
730
731 chcr_req->sc_imm.cmd_more = FILL_CMD_MORE(!imm);
732 chcr_req->sc_imm.len = cpu_to_be32(sizeof(struct cpl_tx_sec_pdu) +
733 sizeof(chcr_req->key_ctx) + sc_len);
734}
735
736/**
737 * create_cipher_wr - form the WR for cipher operations
738 * @req: cipher req.
739 * @ctx: crypto driver context of the request.
740 * @qid: ingress qid where response of this WR should be received.
741 * @op_type: encryption or decryption
742 */
743static struct sk_buff *create_cipher_wr(struct cipher_wr_param *wrparam)
744{
745 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(wrparam->req);
746 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm));
747 struct sk_buff *skb = NULL;
748 struct chcr_wr *chcr_req;
749 struct cpl_rx_phys_dsgl *phys_cpl;
750 struct ulptx_sgl *ulptx;
751 struct chcr_blkcipher_req_ctx *reqctx =
752 ablkcipher_request_ctx(wrparam->req);
753 unsigned int temp = 0, transhdr_len, dst_size;
754 int error;
755 int nents;
756 unsigned int kctx_len;
757 gfp_t flags = wrparam->req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ?
758 GFP_KERNEL : GFP_ATOMIC;
759 struct adapter *adap = padap(c_ctx(tfm)->dev);
760
761 nents = sg_nents_xlen(reqctx->dstsg, wrparam->bytes, CHCR_DST_SG_SIZE,
762 reqctx->dst_ofst);
763 dst_size = get_space_for_phys_dsgl(nents + 1);
764 kctx_len = roundup(ablkctx->enckey_len, 16);
765 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
766 nents = sg_nents_xlen(reqctx->srcsg, wrparam->bytes,
767 CHCR_SRC_SG_SIZE, reqctx->src_ofst);
768 temp = reqctx->imm ? roundup(IV + wrparam->req->nbytes, 16) :
769 (sgl_len(nents + MIN_CIPHER_SG) * 8);
770 transhdr_len += temp;
771 transhdr_len = roundup(transhdr_len, 16);
772 skb = alloc_skb(SGE_MAX_WR_LEN, flags);
773 if (!skb) {
774 error = -ENOMEM;
775 goto err;
776 }
777 chcr_req = __skb_put_zero(skb, transhdr_len);
778 chcr_req->sec_cpl.op_ivinsrtofst =
779 FILL_SEC_CPL_OP_IVINSR(c_ctx(tfm)->dev->rx_channel_id, 2, 1);
780
781 chcr_req->sec_cpl.pldlen = htonl(IV + wrparam->bytes);
782 chcr_req->sec_cpl.aadstart_cipherstop_hi =
783 FILL_SEC_CPL_CIPHERSTOP_HI(0, 0, IV + 1, 0);
784
785 chcr_req->sec_cpl.cipherstop_lo_authinsert =
786 FILL_SEC_CPL_AUTHINSERT(0, 0, 0, 0);
787 chcr_req->sec_cpl.seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(reqctx->op, 0,
788 ablkctx->ciph_mode,
789 0, 0, IV >> 1);
790 chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 0,
791 0, 0, dst_size);
792
793 chcr_req->key_ctx.ctx_hdr = ablkctx->key_ctx_hdr;
794 if ((reqctx->op == CHCR_DECRYPT_OP) &&
795 (!(get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) ==
796 CRYPTO_ALG_SUB_TYPE_CTR)) &&
797 (!(get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) ==
798 CRYPTO_ALG_SUB_TYPE_CTR_RFC3686))) {
799 generate_copy_rrkey(ablkctx, &chcr_req->key_ctx);
800 } else {
801 if ((ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC) ||
802 (ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CTR)) {
803 memcpy(chcr_req->key_ctx.key, ablkctx->key,
804 ablkctx->enckey_len);
805 } else {
806 memcpy(chcr_req->key_ctx.key, ablkctx->key +
807 (ablkctx->enckey_len >> 1),
808 ablkctx->enckey_len >> 1);
809 memcpy(chcr_req->key_ctx.key +
810 (ablkctx->enckey_len >> 1),
811 ablkctx->key,
812 ablkctx->enckey_len >> 1);
813 }
814 }
815 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
816 ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size);
817 chcr_add_cipher_src_ent(wrparam->req, ulptx, wrparam);
818 chcr_add_cipher_dst_ent(wrparam->req, phys_cpl, wrparam, wrparam->qid);
819
820 atomic_inc(&adap->chcr_stats.cipher_rqst);
821 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + kctx_len
822 +(reqctx->imm ? (IV + wrparam->bytes) : 0);
823 create_wreq(c_ctx(tfm), chcr_req, &(wrparam->req->base), reqctx->imm, 0,
824 transhdr_len, temp,
825 ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC);
826 reqctx->skb = skb;
827
828 if (reqctx->op && (ablkctx->ciph_mode ==
829 CHCR_SCMD_CIPHER_MODE_AES_CBC))
830 sg_pcopy_to_buffer(wrparam->req->src,
831 sg_nents(wrparam->req->src), wrparam->req->info, 16,
832 reqctx->processed + wrparam->bytes - AES_BLOCK_SIZE);
833
834 return skb;
835err:
836 return ERR_PTR(error);
837}
838
839static inline int chcr_keyctx_ck_size(unsigned int keylen)
840{
841 int ck_size = 0;
842
843 if (keylen == AES_KEYSIZE_128)
844 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
845 else if (keylen == AES_KEYSIZE_192)
846 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
847 else if (keylen == AES_KEYSIZE_256)
848 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
849 else
850 ck_size = 0;
851
852 return ck_size;
853}
854static int chcr_cipher_fallback_setkey(struct crypto_ablkcipher *cipher,
855 const u8 *key,
856 unsigned int keylen)
857{
858 struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
859 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
860 int err = 0;
861
862 crypto_skcipher_clear_flags(ablkctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
863 crypto_skcipher_set_flags(ablkctx->sw_cipher, cipher->base.crt_flags &
864 CRYPTO_TFM_REQ_MASK);
865 err = crypto_skcipher_setkey(ablkctx->sw_cipher, key, keylen);
866 tfm->crt_flags &= ~CRYPTO_TFM_RES_MASK;
867 tfm->crt_flags |=
868 crypto_skcipher_get_flags(ablkctx->sw_cipher) &
869 CRYPTO_TFM_RES_MASK;
870 return err;
871}
872
873static int chcr_aes_cbc_setkey(struct crypto_ablkcipher *cipher,
874 const u8 *key,
875 unsigned int keylen)
876{
877 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
878 unsigned int ck_size, context_size;
879 u16 alignment = 0;
880 int err;
881
882 err = chcr_cipher_fallback_setkey(cipher, key, keylen);
883 if (err)
884 goto badkey_err;
885
886 ck_size = chcr_keyctx_ck_size(keylen);
887 alignment = ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192 ? 8 : 0;
888 memcpy(ablkctx->key, key, keylen);
889 ablkctx->enckey_len = keylen;
890 get_aes_decrypt_key(ablkctx->rrkey, ablkctx->key, keylen << 3);
891 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD +
892 keylen + alignment) >> 4;
893
894 ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY,
895 0, 0, context_size);
896 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CBC;
897 return 0;
898badkey_err:
899 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
900 ablkctx->enckey_len = 0;
901
902 return err;
903}
904
905static int chcr_aes_ctr_setkey(struct crypto_ablkcipher *cipher,
906 const u8 *key,
907 unsigned int keylen)
908{
909 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
910 unsigned int ck_size, context_size;
911 u16 alignment = 0;
912 int err;
913
914 err = chcr_cipher_fallback_setkey(cipher, key, keylen);
915 if (err)
916 goto badkey_err;
917 ck_size = chcr_keyctx_ck_size(keylen);
918 alignment = (ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192) ? 8 : 0;
919 memcpy(ablkctx->key, key, keylen);
920 ablkctx->enckey_len = keylen;
921 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD +
922 keylen + alignment) >> 4;
923
924 ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY,
925 0, 0, context_size);
926 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CTR;
927
928 return 0;
929badkey_err:
930 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
931 ablkctx->enckey_len = 0;
932
933 return err;
934}
935
936static int chcr_aes_rfc3686_setkey(struct crypto_ablkcipher *cipher,
937 const u8 *key,
938 unsigned int keylen)
939{
940 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
941 unsigned int ck_size, context_size;
942 u16 alignment = 0;
943 int err;
944
945 if (keylen < CTR_RFC3686_NONCE_SIZE)
946 return -EINVAL;
947 memcpy(ablkctx->nonce, key + (keylen - CTR_RFC3686_NONCE_SIZE),
948 CTR_RFC3686_NONCE_SIZE);
949
950 keylen -= CTR_RFC3686_NONCE_SIZE;
951 err = chcr_cipher_fallback_setkey(cipher, key, keylen);
952 if (err)
953 goto badkey_err;
954
955 ck_size = chcr_keyctx_ck_size(keylen);
956 alignment = (ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192) ? 8 : 0;
957 memcpy(ablkctx->key, key, keylen);
958 ablkctx->enckey_len = keylen;
959 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD +
960 keylen + alignment) >> 4;
961
962 ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY,
963 0, 0, context_size);
964 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CTR;
965
966 return 0;
967badkey_err:
968 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
969 ablkctx->enckey_len = 0;
970
971 return err;
972}
973static void ctr_add_iv(u8 *dstiv, u8 *srciv, u32 add)
974{
975 unsigned int size = AES_BLOCK_SIZE;
976 __be32 *b = (__be32 *)(dstiv + size);
977 u32 c, prev;
978
979 memcpy(dstiv, srciv, AES_BLOCK_SIZE);
980 for (; size >= 4; size -= 4) {
981 prev = be32_to_cpu(*--b);
982 c = prev + add;
983 *b = cpu_to_be32(c);
984 if (prev < c)
985 break;
986 add = 1;
987 }
988
989}
990
991static unsigned int adjust_ctr_overflow(u8 *iv, u32 bytes)
992{
993 __be32 *b = (__be32 *)(iv + AES_BLOCK_SIZE);
994 u64 c;
995 u32 temp = be32_to_cpu(*--b);
996
997 temp = ~temp;
998 c = (u64)temp + 1; // No of block can processed withou overflow
999 if ((bytes / AES_BLOCK_SIZE) > c)
1000 bytes = c * AES_BLOCK_SIZE;
1001 return bytes;
1002}
1003
1004static int chcr_update_tweak(struct ablkcipher_request *req, u8 *iv,
1005 u32 isfinal)
1006{
1007 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
1008 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm));
1009 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
1010 struct crypto_cipher *cipher;
1011 int ret, i;
1012 u8 *key;
1013 unsigned int keylen;
1014 int round = reqctx->last_req_len / AES_BLOCK_SIZE;
1015 int round8 = round / 8;
1016
1017 cipher = ablkctx->aes_generic;
1018 memcpy(iv, reqctx->iv, AES_BLOCK_SIZE);
1019
1020 keylen = ablkctx->enckey_len / 2;
1021 key = ablkctx->key + keylen;
1022 ret = crypto_cipher_setkey(cipher, key, keylen);
1023 if (ret)
1024 goto out;
1025 /*H/W sends the encrypted IV in dsgl when AADIVDROP bit is 0*/
1026 for (i = 0; i < round8; i++)
1027 gf128mul_x8_ble((le128 *)iv, (le128 *)iv);
1028
1029 for (i = 0; i < (round % 8); i++)
1030 gf128mul_x_ble((le128 *)iv, (le128 *)iv);
1031
1032 if (!isfinal)
1033 crypto_cipher_decrypt_one(cipher, iv, iv);
1034out:
1035 return ret;
1036}
1037
1038static int chcr_update_cipher_iv(struct ablkcipher_request *req,
1039 struct cpl_fw6_pld *fw6_pld, u8 *iv)
1040{
1041 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
1042 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
1043 int subtype = get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm));
1044 int ret = 0;
1045
1046 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR)
1047 ctr_add_iv(iv, req->info, (reqctx->processed /
1048 AES_BLOCK_SIZE));
1049 else if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_RFC3686)
1050 *(__be32 *)(reqctx->iv + CTR_RFC3686_NONCE_SIZE +
1051 CTR_RFC3686_IV_SIZE) = cpu_to_be32((reqctx->processed /
1052 AES_BLOCK_SIZE) + 1);
1053 else if (subtype == CRYPTO_ALG_SUB_TYPE_XTS)
1054 ret = chcr_update_tweak(req, iv, 0);
1055 else if (subtype == CRYPTO_ALG_SUB_TYPE_CBC) {
1056 if (reqctx->op)
1057 /*Updated before sending last WR*/
1058 memcpy(iv, req->info, AES_BLOCK_SIZE);
1059 else
1060 memcpy(iv, &fw6_pld->data[2], AES_BLOCK_SIZE);
1061 }
1062
1063 return ret;
1064
1065}
1066
1067/* We need separate function for final iv because in rfc3686 Initial counter
1068 * starts from 1 and buffer size of iv is 8 byte only which remains constant
1069 * for subsequent update requests
1070 */
1071
1072static int chcr_final_cipher_iv(struct ablkcipher_request *req,
1073 struct cpl_fw6_pld *fw6_pld, u8 *iv)
1074{
1075 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
1076 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
1077 int subtype = get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm));
1078 int ret = 0;
1079
1080 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR)
1081 ctr_add_iv(iv, req->info, (reqctx->processed /
1082 AES_BLOCK_SIZE));
1083 else if (subtype == CRYPTO_ALG_SUB_TYPE_XTS)
1084 ret = chcr_update_tweak(req, iv, 1);
1085 else if (subtype == CRYPTO_ALG_SUB_TYPE_CBC) {
1086 /*Already updated for Decrypt*/
1087 if (!reqctx->op)
1088 memcpy(iv, &fw6_pld->data[2], AES_BLOCK_SIZE);
1089
1090 }
1091 return ret;
1092
1093}
1094
1095static int chcr_handle_cipher_resp(struct ablkcipher_request *req,
1096 unsigned char *input, int err)
1097{
1098 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
1099 struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm));
1100 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm));
1101 struct sk_buff *skb;
1102 struct cpl_fw6_pld *fw6_pld = (struct cpl_fw6_pld *)input;
1103 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
1104 struct cipher_wr_param wrparam;
1105 int bytes;
1106
1107 if (err)
1108 goto unmap;
1109 if (req->nbytes == reqctx->processed) {
1110 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev,
1111 req);
1112 err = chcr_final_cipher_iv(req, fw6_pld, req->info);
1113 goto complete;
1114 }
1115
1116 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
1117 c_ctx(tfm)->tx_qidx))) {
1118 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) {
1119 err = -EBUSY;
1120 goto unmap;
1121 }
1122
1123 }
1124 if (!reqctx->imm) {
1125 bytes = chcr_sg_ent_in_wr(reqctx->srcsg, reqctx->dstsg, 1,
1126 CIP_SPACE_LEFT(ablkctx->enckey_len),
1127 reqctx->src_ofst, reqctx->dst_ofst);
1128 if ((bytes + reqctx->processed) >= req->nbytes)
1129 bytes = req->nbytes - reqctx->processed;
1130 else
1131 bytes = rounddown(bytes, 16);
1132 } else {
1133 /*CTR mode counter overfloa*/
1134 bytes = req->nbytes - reqctx->processed;
1135 }
1136 dma_sync_single_for_cpu(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev,
1137 reqctx->iv_dma, IV, DMA_BIDIRECTIONAL);
1138 err = chcr_update_cipher_iv(req, fw6_pld, reqctx->iv);
1139 dma_sync_single_for_device(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev,
1140 reqctx->iv_dma, IV, DMA_BIDIRECTIONAL);
1141 if (err)
1142 goto unmap;
1143
1144 if (unlikely(bytes == 0)) {
1145 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev,
1146 req);
1147 err = chcr_cipher_fallback(ablkctx->sw_cipher,
1148 req->base.flags,
1149 req->src,
1150 req->dst,
1151 req->nbytes,
1152 req->info,
1153 reqctx->op);
1154 goto complete;
1155 }
1156
1157 if (get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) ==
1158 CRYPTO_ALG_SUB_TYPE_CTR)
1159 bytes = adjust_ctr_overflow(reqctx->iv, bytes);
1160 wrparam.qid = u_ctx->lldi.rxq_ids[c_ctx(tfm)->rx_qidx];
1161 wrparam.req = req;
1162 wrparam.bytes = bytes;
1163 skb = create_cipher_wr(&wrparam);
1164 if (IS_ERR(skb)) {
1165 pr_err("chcr : %s : Failed to form WR. No memory\n", __func__);
1166 err = PTR_ERR(skb);
1167 goto unmap;
1168 }
1169 skb->dev = u_ctx->lldi.ports[0];
1170 set_wr_txq(skb, CPL_PRIORITY_DATA, c_ctx(tfm)->tx_qidx);
1171 chcr_send_wr(skb);
1172 reqctx->last_req_len = bytes;
1173 reqctx->processed += bytes;
1174 return 0;
1175unmap:
1176 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req);
1177complete:
1178 req->base.complete(&req->base, err);
1179 return err;
1180}
1181
1182static int process_cipher(struct ablkcipher_request *req,
1183 unsigned short qid,
1184 struct sk_buff **skb,
1185 unsigned short op_type)
1186{
1187 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
1188 unsigned int ivsize = crypto_ablkcipher_ivsize(tfm);
1189 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
1190 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm));
1191 struct cipher_wr_param wrparam;
1192 int bytes, err = -EINVAL;
1193
1194 reqctx->processed = 0;
1195 if (!req->info)
1196 goto error;
1197 if ((ablkctx->enckey_len == 0) || (ivsize > AES_BLOCK_SIZE) ||
1198 (req->nbytes == 0) ||
1199 (req->nbytes % crypto_ablkcipher_blocksize(tfm))) {
1200 pr_err("AES: Invalid value of Key Len %d nbytes %d IV Len %d\n",
1201 ablkctx->enckey_len, req->nbytes, ivsize);
1202 goto error;
1203 }
1204 chcr_cipher_dma_map(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req);
1205 if (req->nbytes < (SGE_MAX_WR_LEN - (sizeof(struct chcr_wr) +
1206 AES_MIN_KEY_SIZE +
1207 sizeof(struct cpl_rx_phys_dsgl) +
1208 /*Min dsgl size*/
1209 32))) {
1210 /* Can be sent as Imm*/
1211 unsigned int dnents = 0, transhdr_len, phys_dsgl, kctx_len;
1212
1213 dnents = sg_nents_xlen(req->dst, req->nbytes,
1214 CHCR_DST_SG_SIZE, 0);
1215 dnents += 1; // IV
1216 phys_dsgl = get_space_for_phys_dsgl(dnents);
1217 kctx_len = roundup(ablkctx->enckey_len, 16);
1218 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, phys_dsgl);
1219 reqctx->imm = (transhdr_len + IV + req->nbytes) <=
1220 SGE_MAX_WR_LEN;
1221 bytes = IV + req->nbytes;
1222
1223 } else {
1224 reqctx->imm = 0;
1225 }
1226
1227 if (!reqctx->imm) {
1228 bytes = chcr_sg_ent_in_wr(req->src, req->dst,
1229 MIN_CIPHER_SG,
1230 CIP_SPACE_LEFT(ablkctx->enckey_len),
1231 0, 0);
1232 if ((bytes + reqctx->processed) >= req->nbytes)
1233 bytes = req->nbytes - reqctx->processed;
1234 else
1235 bytes = rounddown(bytes, 16);
1236 } else {
1237 bytes = req->nbytes;
1238 }
1239 if (get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) ==
1240 CRYPTO_ALG_SUB_TYPE_CTR) {
1241 bytes = adjust_ctr_overflow(req->info, bytes);
1242 }
1243 if (get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) ==
1244 CRYPTO_ALG_SUB_TYPE_CTR_RFC3686) {
1245 memcpy(reqctx->iv, ablkctx->nonce, CTR_RFC3686_NONCE_SIZE);
1246 memcpy(reqctx->iv + CTR_RFC3686_NONCE_SIZE, req->info,
1247 CTR_RFC3686_IV_SIZE);
1248
1249 /* initialize counter portion of counter block */
1250 *(__be32 *)(reqctx->iv + CTR_RFC3686_NONCE_SIZE +
1251 CTR_RFC3686_IV_SIZE) = cpu_to_be32(1);
1252
1253 } else {
1254
1255 memcpy(reqctx->iv, req->info, IV);
1256 }
1257 if (unlikely(bytes == 0)) {
1258 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev,
1259 req);
1260 err = chcr_cipher_fallback(ablkctx->sw_cipher,
1261 req->base.flags,
1262 req->src,
1263 req->dst,
1264 req->nbytes,
1265 reqctx->iv,
1266 op_type);
1267 goto error;
1268 }
1269 reqctx->op = op_type;
1270 reqctx->srcsg = req->src;
1271 reqctx->dstsg = req->dst;
1272 reqctx->src_ofst = 0;
1273 reqctx->dst_ofst = 0;
1274 wrparam.qid = qid;
1275 wrparam.req = req;
1276 wrparam.bytes = bytes;
1277 *skb = create_cipher_wr(&wrparam);
1278 if (IS_ERR(*skb)) {
1279 err = PTR_ERR(*skb);
1280 goto unmap;
1281 }
1282 reqctx->processed = bytes;
1283 reqctx->last_req_len = bytes;
1284
1285 return 0;
1286unmap:
1287 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req);
1288error:
1289 return err;
1290}
1291
1292static int chcr_aes_encrypt(struct ablkcipher_request *req)
1293{
1294 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
1295 struct sk_buff *skb = NULL;
1296 int err;
1297 struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm));
1298
1299 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
1300 c_ctx(tfm)->tx_qidx))) {
1301 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
1302 return -EBUSY;
1303 }
1304
1305 err = process_cipher(req, u_ctx->lldi.rxq_ids[c_ctx(tfm)->rx_qidx],
1306 &skb, CHCR_ENCRYPT_OP);
1307 if (err || !skb)
1308 return err;
1309 skb->dev = u_ctx->lldi.ports[0];
1310 set_wr_txq(skb, CPL_PRIORITY_DATA, c_ctx(tfm)->tx_qidx);
1311 chcr_send_wr(skb);
1312 return -EINPROGRESS;
1313}
1314
1315static int chcr_aes_decrypt(struct ablkcipher_request *req)
1316{
1317 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
1318 struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm));
1319 struct sk_buff *skb = NULL;
1320 int err;
1321
1322 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
1323 c_ctx(tfm)->tx_qidx))) {
1324 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
1325 return -EBUSY;
1326 }
1327
1328 err = process_cipher(req, u_ctx->lldi.rxq_ids[c_ctx(tfm)->rx_qidx],
1329 &skb, CHCR_DECRYPT_OP);
1330 if (err || !skb)
1331 return err;
1332 skb->dev = u_ctx->lldi.ports[0];
1333 set_wr_txq(skb, CPL_PRIORITY_DATA, c_ctx(tfm)->tx_qidx);
1334 chcr_send_wr(skb);
1335 return -EINPROGRESS;
1336}
1337
1338static int chcr_device_init(struct chcr_context *ctx)
1339{
1340 struct uld_ctx *u_ctx = NULL;
1341 struct adapter *adap;
1342 unsigned int id;
1343 int txq_perchan, txq_idx, ntxq;
1344 int err = 0, rxq_perchan, rxq_idx;
1345
1346 id = smp_processor_id();
1347 if (!ctx->dev) {
1348 u_ctx = assign_chcr_device();
1349 if (!u_ctx) {
1350 pr_err("chcr device assignment fails\n");
1351 goto out;
1352 }
1353 ctx->dev = u_ctx->dev;
1354 adap = padap(ctx->dev);
1355 ntxq = min_not_zero((unsigned int)u_ctx->lldi.nrxq,
1356 adap->vres.ncrypto_fc);
1357 rxq_perchan = u_ctx->lldi.nrxq / u_ctx->lldi.nchan;
1358 txq_perchan = ntxq / u_ctx->lldi.nchan;
1359 rxq_idx = ctx->dev->tx_channel_id * rxq_perchan;
1360 rxq_idx += id % rxq_perchan;
1361 txq_idx = ctx->dev->tx_channel_id * txq_perchan;
1362 txq_idx += id % txq_perchan;
1363 spin_lock(&ctx->dev->lock_chcr_dev);
1364 ctx->rx_qidx = rxq_idx;
1365 ctx->tx_qidx = txq_idx;
1366 ctx->dev->tx_channel_id = !ctx->dev->tx_channel_id;
1367 ctx->dev->rx_channel_id = 0;
1368 spin_unlock(&ctx->dev->lock_chcr_dev);
1369 }
1370out:
1371 return err;
1372}
1373
1374static int chcr_cra_init(struct crypto_tfm *tfm)
1375{
1376 struct crypto_alg *alg = tfm->__crt_alg;
1377 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
1378 struct ablk_ctx *ablkctx = ABLK_CTX(ctx);
1379
1380 ablkctx->sw_cipher = crypto_alloc_skcipher(alg->cra_name, 0,
1381 CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK);
1382 if (IS_ERR(ablkctx->sw_cipher)) {
1383 pr_err("failed to allocate fallback for %s\n", alg->cra_name);
1384 return PTR_ERR(ablkctx->sw_cipher);
1385 }
1386
1387 if (get_cryptoalg_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_XTS) {
1388 /* To update tweak*/
1389 ablkctx->aes_generic = crypto_alloc_cipher("aes-generic", 0, 0);
1390 if (IS_ERR(ablkctx->aes_generic)) {
1391 pr_err("failed to allocate aes cipher for tweak\n");
1392 return PTR_ERR(ablkctx->aes_generic);
1393 }
1394 } else
1395 ablkctx->aes_generic = NULL;
1396
1397 tfm->crt_ablkcipher.reqsize = sizeof(struct chcr_blkcipher_req_ctx);
1398 return chcr_device_init(crypto_tfm_ctx(tfm));
1399}
1400
1401static int chcr_rfc3686_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 /*RFC3686 initialises IV counter value to 1, rfc3686(ctr(aes))
1408 * cannot be used as fallback in chcr_handle_cipher_response
1409 */
1410 ablkctx->sw_cipher = crypto_alloc_skcipher("ctr(aes)", 0,
1411 CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK);
1412 if (IS_ERR(ablkctx->sw_cipher)) {
1413 pr_err("failed to allocate fallback for %s\n", alg->cra_name);
1414 return PTR_ERR(ablkctx->sw_cipher);
1415 }
1416 tfm->crt_ablkcipher.reqsize = sizeof(struct chcr_blkcipher_req_ctx);
1417 return chcr_device_init(crypto_tfm_ctx(tfm));
1418}
1419
1420
1421static void chcr_cra_exit(struct crypto_tfm *tfm)
1422{
1423 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
1424 struct ablk_ctx *ablkctx = ABLK_CTX(ctx);
1425
1426 crypto_free_skcipher(ablkctx->sw_cipher);
1427 if (ablkctx->aes_generic)
1428 crypto_free_cipher(ablkctx->aes_generic);
1429}
1430
1431static int get_alg_config(struct algo_param *params,
1432 unsigned int auth_size)
1433{
1434 switch (auth_size) {
1435 case SHA1_DIGEST_SIZE:
1436 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_160;
1437 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA1;
1438 params->result_size = SHA1_DIGEST_SIZE;
1439 break;
1440 case SHA224_DIGEST_SIZE:
1441 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256;
1442 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA224;
1443 params->result_size = SHA256_DIGEST_SIZE;
1444 break;
1445 case SHA256_DIGEST_SIZE:
1446 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256;
1447 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA256;
1448 params->result_size = SHA256_DIGEST_SIZE;
1449 break;
1450 case SHA384_DIGEST_SIZE:
1451 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_512;
1452 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA512_384;
1453 params->result_size = SHA512_DIGEST_SIZE;
1454 break;
1455 case SHA512_DIGEST_SIZE:
1456 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_512;
1457 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA512_512;
1458 params->result_size = SHA512_DIGEST_SIZE;
1459 break;
1460 default:
1461 pr_err("chcr : ERROR, unsupported digest size\n");
1462 return -EINVAL;
1463 }
1464 return 0;
1465}
1466
1467static inline void chcr_free_shash(struct crypto_shash *base_hash)
1468{
1469 crypto_free_shash(base_hash);
1470}
1471
1472/**
1473 * create_hash_wr - Create hash work request
1474 * @req - Cipher req base
1475 */
1476static struct sk_buff *create_hash_wr(struct ahash_request *req,
1477 struct hash_wr_param *param)
1478{
1479 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1480 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
1481 struct hmac_ctx *hmacctx = HMAC_CTX(h_ctx(tfm));
1482 struct sk_buff *skb = NULL;
1483 struct uld_ctx *u_ctx = ULD_CTX(h_ctx(tfm));
1484 struct chcr_wr *chcr_req;
1485 struct ulptx_sgl *ulptx;
1486 unsigned int nents = 0, transhdr_len;
1487 unsigned int temp = 0;
1488 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
1489 GFP_ATOMIC;
1490 struct adapter *adap = padap(h_ctx(tfm)->dev);
1491 int error = 0;
1492
1493 transhdr_len = HASH_TRANSHDR_SIZE(param->kctx_len);
1494 req_ctx->hctx_wr.imm = (transhdr_len + param->bfr_len +
1495 param->sg_len) <= SGE_MAX_WR_LEN;
1496 nents = sg_nents_xlen(req_ctx->hctx_wr.srcsg, param->sg_len,
1497 CHCR_SRC_SG_SIZE, req_ctx->hctx_wr.src_ofst);
1498 nents += param->bfr_len ? 1 : 0;
1499 transhdr_len += req_ctx->hctx_wr.imm ? roundup(param->bfr_len +
1500 param->sg_len, 16) : (sgl_len(nents) * 8);
1501 transhdr_len = roundup(transhdr_len, 16);
1502
1503 skb = alloc_skb(transhdr_len, flags);
1504 if (!skb)
1505 return ERR_PTR(-ENOMEM);
1506 chcr_req = __skb_put_zero(skb, transhdr_len);
1507
1508 chcr_req->sec_cpl.op_ivinsrtofst =
1509 FILL_SEC_CPL_OP_IVINSR(h_ctx(tfm)->dev->rx_channel_id, 2, 0);
1510 chcr_req->sec_cpl.pldlen = htonl(param->bfr_len + param->sg_len);
1511
1512 chcr_req->sec_cpl.aadstart_cipherstop_hi =
1513 FILL_SEC_CPL_CIPHERSTOP_HI(0, 0, 0, 0);
1514 chcr_req->sec_cpl.cipherstop_lo_authinsert =
1515 FILL_SEC_CPL_AUTHINSERT(0, 1, 0, 0);
1516 chcr_req->sec_cpl.seqno_numivs =
1517 FILL_SEC_CPL_SCMD0_SEQNO(0, 0, 0, param->alg_prm.auth_mode,
1518 param->opad_needed, 0);
1519
1520 chcr_req->sec_cpl.ivgen_hdrlen =
1521 FILL_SEC_CPL_IVGEN_HDRLEN(param->last, param->more, 0, 1, 0, 0);
1522
1523 memcpy(chcr_req->key_ctx.key, req_ctx->partial_hash,
1524 param->alg_prm.result_size);
1525
1526 if (param->opad_needed)
1527 memcpy(chcr_req->key_ctx.key +
1528 ((param->alg_prm.result_size <= 32) ? 32 :
1529 CHCR_HASH_MAX_DIGEST_SIZE),
1530 hmacctx->opad, param->alg_prm.result_size);
1531
1532 chcr_req->key_ctx.ctx_hdr = FILL_KEY_CTX_HDR(CHCR_KEYCTX_NO_KEY,
1533 param->alg_prm.mk_size, 0,
1534 param->opad_needed,
1535 ((param->kctx_len +
1536 sizeof(chcr_req->key_ctx)) >> 4));
1537 chcr_req->sec_cpl.scmd1 = cpu_to_be64((u64)param->scmd1);
1538 ulptx = (struct ulptx_sgl *)((u8 *)(chcr_req + 1) + param->kctx_len +
1539 DUMMY_BYTES);
1540 if (param->bfr_len != 0) {
1541 req_ctx->hctx_wr.dma_addr =
1542 dma_map_single(&u_ctx->lldi.pdev->dev, req_ctx->reqbfr,
1543 param->bfr_len, DMA_TO_DEVICE);
1544 if (dma_mapping_error(&u_ctx->lldi.pdev->dev,
1545 req_ctx->hctx_wr. dma_addr)) {
1546 error = -ENOMEM;
1547 goto err;
1548 }
1549 req_ctx->hctx_wr.dma_len = param->bfr_len;
1550 } else {
1551 req_ctx->hctx_wr.dma_addr = 0;
1552 }
1553 chcr_add_hash_src_ent(req, ulptx, param);
1554 /* Request upto max wr size */
1555 temp = param->kctx_len + DUMMY_BYTES + (req_ctx->hctx_wr.imm ?
1556 (param->sg_len + param->bfr_len) : 0);
1557 atomic_inc(&adap->chcr_stats.digest_rqst);
1558 create_wreq(h_ctx(tfm), chcr_req, &req->base, req_ctx->hctx_wr.imm,
1559 param->hash_size, transhdr_len,
1560 temp, 0);
1561 req_ctx->hctx_wr.skb = skb;
1562 return skb;
1563err:
1564 kfree_skb(skb);
1565 return ERR_PTR(error);
1566}
1567
1568static int chcr_ahash_update(struct ahash_request *req)
1569{
1570 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1571 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
1572 struct uld_ctx *u_ctx = NULL;
1573 struct sk_buff *skb;
1574 u8 remainder = 0, bs;
1575 unsigned int nbytes = req->nbytes;
1576 struct hash_wr_param params;
1577 int error;
1578
1579 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1580 u_ctx = ULD_CTX(h_ctx(rtfm));
1581 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
1582 h_ctx(rtfm)->tx_qidx))) {
1583 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
1584 return -EBUSY;
1585 }
1586
1587 if (nbytes + req_ctx->reqlen >= bs) {
1588 remainder = (nbytes + req_ctx->reqlen) % bs;
1589 nbytes = nbytes + req_ctx->reqlen - remainder;
1590 } else {
1591 sg_pcopy_to_buffer(req->src, sg_nents(req->src), req_ctx->reqbfr
1592 + req_ctx->reqlen, nbytes, 0);
1593 req_ctx->reqlen += nbytes;
1594 return 0;
1595 }
1596 chcr_init_hctx_per_wr(req_ctx);
1597 error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req);
1598 if (error)
1599 return -ENOMEM;
1600 get_alg_config(¶ms.alg_prm, crypto_ahash_digestsize(rtfm));
1601 params.kctx_len = roundup(params.alg_prm.result_size, 16);
1602 params.sg_len = chcr_hash_ent_in_wr(req->src, !!req_ctx->reqlen,
1603 HASH_SPACE_LEFT(params.kctx_len), 0);
1604 if (params.sg_len > req->nbytes)
1605 params.sg_len = req->nbytes;
1606 params.sg_len = rounddown(params.sg_len + req_ctx->reqlen, bs) -
1607 req_ctx->reqlen;
1608 params.opad_needed = 0;
1609 params.more = 1;
1610 params.last = 0;
1611 params.bfr_len = req_ctx->reqlen;
1612 params.scmd1 = 0;
1613 req_ctx->hctx_wr.srcsg = req->src;
1614
1615 params.hash_size = params.alg_prm.result_size;
1616 req_ctx->data_len += params.sg_len + params.bfr_len;
1617 skb = create_hash_wr(req, ¶ms);
1618 if (IS_ERR(skb)) {
1619 error = PTR_ERR(skb);
1620 goto unmap;
1621 }
1622
1623 req_ctx->hctx_wr.processed += params.sg_len;
1624 if (remainder) {
1625 /* Swap buffers */
1626 swap(req_ctx->reqbfr, req_ctx->skbfr);
1627 sg_pcopy_to_buffer(req->src, sg_nents(req->src),
1628 req_ctx->reqbfr, remainder, req->nbytes -
1629 remainder);
1630 }
1631 req_ctx->reqlen = remainder;
1632 skb->dev = u_ctx->lldi.ports[0];
1633 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx);
1634 chcr_send_wr(skb);
1635
1636 return -EINPROGRESS;
1637unmap:
1638 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
1639 return error;
1640}
1641
1642static void create_last_hash_block(char *bfr_ptr, unsigned int bs, u64 scmd1)
1643{
1644 memset(bfr_ptr, 0, bs);
1645 *bfr_ptr = 0x80;
1646 if (bs == 64)
1647 *(__be64 *)(bfr_ptr + 56) = cpu_to_be64(scmd1 << 3);
1648 else
1649 *(__be64 *)(bfr_ptr + 120) = cpu_to_be64(scmd1 << 3);
1650}
1651
1652static int chcr_ahash_final(struct ahash_request *req)
1653{
1654 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1655 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
1656 struct hash_wr_param params;
1657 struct sk_buff *skb;
1658 struct uld_ctx *u_ctx = NULL;
1659 u8 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1660
1661 chcr_init_hctx_per_wr(req_ctx);
1662 u_ctx = ULD_CTX(h_ctx(rtfm));
1663 if (is_hmac(crypto_ahash_tfm(rtfm)))
1664 params.opad_needed = 1;
1665 else
1666 params.opad_needed = 0;
1667 params.sg_len = 0;
1668 req_ctx->hctx_wr.isfinal = 1;
1669 get_alg_config(¶ms.alg_prm, crypto_ahash_digestsize(rtfm));
1670 params.kctx_len = roundup(params.alg_prm.result_size, 16);
1671 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1672 params.opad_needed = 1;
1673 params.kctx_len *= 2;
1674 } else {
1675 params.opad_needed = 0;
1676 }
1677
1678 req_ctx->hctx_wr.result = 1;
1679 params.bfr_len = req_ctx->reqlen;
1680 req_ctx->data_len += params.bfr_len + params.sg_len;
1681 req_ctx->hctx_wr.srcsg = req->src;
1682 if (req_ctx->reqlen == 0) {
1683 create_last_hash_block(req_ctx->reqbfr, bs, req_ctx->data_len);
1684 params.last = 0;
1685 params.more = 1;
1686 params.scmd1 = 0;
1687 params.bfr_len = bs;
1688
1689 } else {
1690 params.scmd1 = req_ctx->data_len;
1691 params.last = 1;
1692 params.more = 0;
1693 }
1694 params.hash_size = crypto_ahash_digestsize(rtfm);
1695 skb = create_hash_wr(req, ¶ms);
1696 if (IS_ERR(skb))
1697 return PTR_ERR(skb);
1698 req_ctx->reqlen = 0;
1699 skb->dev = u_ctx->lldi.ports[0];
1700 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx);
1701 chcr_send_wr(skb);
1702 return -EINPROGRESS;
1703}
1704
1705static int chcr_ahash_finup(struct ahash_request *req)
1706{
1707 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1708 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
1709 struct uld_ctx *u_ctx = NULL;
1710 struct sk_buff *skb;
1711 struct hash_wr_param params;
1712 u8 bs;
1713 int error;
1714
1715 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1716 u_ctx = ULD_CTX(h_ctx(rtfm));
1717
1718 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
1719 h_ctx(rtfm)->tx_qidx))) {
1720 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
1721 return -EBUSY;
1722 }
1723 chcr_init_hctx_per_wr(req_ctx);
1724 error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req);
1725 if (error)
1726 return -ENOMEM;
1727
1728 get_alg_config(¶ms.alg_prm, crypto_ahash_digestsize(rtfm));
1729 params.kctx_len = roundup(params.alg_prm.result_size, 16);
1730 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1731 params.kctx_len *= 2;
1732 params.opad_needed = 1;
1733 } else {
1734 params.opad_needed = 0;
1735 }
1736
1737 params.sg_len = chcr_hash_ent_in_wr(req->src, !!req_ctx->reqlen,
1738 HASH_SPACE_LEFT(params.kctx_len), 0);
1739 if (params.sg_len < req->nbytes) {
1740 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1741 params.kctx_len /= 2;
1742 params.opad_needed = 0;
1743 }
1744 params.last = 0;
1745 params.more = 1;
1746 params.sg_len = rounddown(params.sg_len + req_ctx->reqlen, bs)
1747 - req_ctx->reqlen;
1748 params.hash_size = params.alg_prm.result_size;
1749 params.scmd1 = 0;
1750 } else {
1751 params.last = 1;
1752 params.more = 0;
1753 params.sg_len = req->nbytes;
1754 params.hash_size = crypto_ahash_digestsize(rtfm);
1755 params.scmd1 = req_ctx->data_len + req_ctx->reqlen +
1756 params.sg_len;
1757 }
1758 params.bfr_len = req_ctx->reqlen;
1759 req_ctx->data_len += params.bfr_len + params.sg_len;
1760 req_ctx->hctx_wr.result = 1;
1761 req_ctx->hctx_wr.srcsg = req->src;
1762 if ((req_ctx->reqlen + req->nbytes) == 0) {
1763 create_last_hash_block(req_ctx->reqbfr, bs, req_ctx->data_len);
1764 params.last = 0;
1765 params.more = 1;
1766 params.scmd1 = 0;
1767 params.bfr_len = bs;
1768 }
1769 skb = create_hash_wr(req, ¶ms);
1770 if (IS_ERR(skb)) {
1771 error = PTR_ERR(skb);
1772 goto unmap;
1773 }
1774 req_ctx->reqlen = 0;
1775 req_ctx->hctx_wr.processed += params.sg_len;
1776 skb->dev = u_ctx->lldi.ports[0];
1777 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx);
1778 chcr_send_wr(skb);
1779
1780 return -EINPROGRESS;
1781unmap:
1782 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
1783 return error;
1784}
1785
1786static int chcr_ahash_digest(struct ahash_request *req)
1787{
1788 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
1789 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
1790 struct uld_ctx *u_ctx = NULL;
1791 struct sk_buff *skb;
1792 struct hash_wr_param params;
1793 u8 bs;
1794 int error;
1795
1796 rtfm->init(req);
1797 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1798
1799 u_ctx = ULD_CTX(h_ctx(rtfm));
1800 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
1801 h_ctx(rtfm)->tx_qidx))) {
1802 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
1803 return -EBUSY;
1804 }
1805
1806 chcr_init_hctx_per_wr(req_ctx);
1807 error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req);
1808 if (error)
1809 return -ENOMEM;
1810
1811 get_alg_config(¶ms.alg_prm, crypto_ahash_digestsize(rtfm));
1812 params.kctx_len = roundup(params.alg_prm.result_size, 16);
1813 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1814 params.kctx_len *= 2;
1815 params.opad_needed = 1;
1816 } else {
1817 params.opad_needed = 0;
1818 }
1819 params.sg_len = chcr_hash_ent_in_wr(req->src, !!req_ctx->reqlen,
1820 HASH_SPACE_LEFT(params.kctx_len), 0);
1821 if (params.sg_len < req->nbytes) {
1822 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1823 params.kctx_len /= 2;
1824 params.opad_needed = 0;
1825 }
1826 params.last = 0;
1827 params.more = 1;
1828 params.scmd1 = 0;
1829 params.sg_len = rounddown(params.sg_len, bs);
1830 params.hash_size = params.alg_prm.result_size;
1831 } else {
1832 params.sg_len = req->nbytes;
1833 params.hash_size = crypto_ahash_digestsize(rtfm);
1834 params.last = 1;
1835 params.more = 0;
1836 params.scmd1 = req->nbytes + req_ctx->data_len;
1837
1838 }
1839 params.bfr_len = 0;
1840 req_ctx->hctx_wr.result = 1;
1841 req_ctx->hctx_wr.srcsg = req->src;
1842 req_ctx->data_len += params.bfr_len + params.sg_len;
1843
1844 if (req->nbytes == 0) {
1845 create_last_hash_block(req_ctx->reqbfr, bs, 0);
1846 params.more = 1;
1847 params.bfr_len = bs;
1848 }
1849
1850 skb = create_hash_wr(req, ¶ms);
1851 if (IS_ERR(skb)) {
1852 error = PTR_ERR(skb);
1853 goto unmap;
1854 }
1855 req_ctx->hctx_wr.processed += params.sg_len;
1856 skb->dev = u_ctx->lldi.ports[0];
1857 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx);
1858 chcr_send_wr(skb);
1859 return -EINPROGRESS;
1860unmap:
1861 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
1862 return error;
1863}
1864
1865static int chcr_ahash_continue(struct ahash_request *req)
1866{
1867 struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req);
1868 struct chcr_hctx_per_wr *hctx_wr = &reqctx->hctx_wr;
1869 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req);
1870 struct uld_ctx *u_ctx = NULL;
1871 struct sk_buff *skb;
1872 struct hash_wr_param params;
1873 u8 bs;
1874 int error;
1875
1876 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
1877 u_ctx = ULD_CTX(h_ctx(rtfm));
1878 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
1879 h_ctx(rtfm)->tx_qidx))) {
1880 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
1881 return -EBUSY;
1882 }
1883 get_alg_config(¶ms.alg_prm, crypto_ahash_digestsize(rtfm));
1884 params.kctx_len = roundup(params.alg_prm.result_size, 16);
1885 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1886 params.kctx_len *= 2;
1887 params.opad_needed = 1;
1888 } else {
1889 params.opad_needed = 0;
1890 }
1891 params.sg_len = chcr_hash_ent_in_wr(hctx_wr->srcsg, 0,
1892 HASH_SPACE_LEFT(params.kctx_len),
1893 hctx_wr->src_ofst);
1894 if ((params.sg_len + hctx_wr->processed) > req->nbytes)
1895 params.sg_len = req->nbytes - hctx_wr->processed;
1896 if (!hctx_wr->result ||
1897 ((params.sg_len + hctx_wr->processed) < req->nbytes)) {
1898 if (is_hmac(crypto_ahash_tfm(rtfm))) {
1899 params.kctx_len /= 2;
1900 params.opad_needed = 0;
1901 }
1902 params.last = 0;
1903 params.more = 1;
1904 params.sg_len = rounddown(params.sg_len, bs);
1905 params.hash_size = params.alg_prm.result_size;
1906 params.scmd1 = 0;
1907 } else {
1908 params.last = 1;
1909 params.more = 0;
1910 params.hash_size = crypto_ahash_digestsize(rtfm);
1911 params.scmd1 = reqctx->data_len + params.sg_len;
1912 }
1913 params.bfr_len = 0;
1914 reqctx->data_len += params.sg_len;
1915 skb = create_hash_wr(req, ¶ms);
1916 if (IS_ERR(skb)) {
1917 error = PTR_ERR(skb);
1918 goto err;
1919 }
1920 hctx_wr->processed += params.sg_len;
1921 skb->dev = u_ctx->lldi.ports[0];
1922 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx);
1923 chcr_send_wr(skb);
1924 return 0;
1925err:
1926 return error;
1927}
1928
1929static inline void chcr_handle_ahash_resp(struct ahash_request *req,
1930 unsigned char *input,
1931 int err)
1932{
1933 struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req);
1934 struct chcr_hctx_per_wr *hctx_wr = &reqctx->hctx_wr;
1935 int digestsize, updated_digestsize;
1936 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
1937 struct uld_ctx *u_ctx = ULD_CTX(h_ctx(tfm));
1938
1939 if (input == NULL)
1940 goto out;
1941 digestsize = crypto_ahash_digestsize(crypto_ahash_reqtfm(req));
1942 updated_digestsize = digestsize;
1943 if (digestsize == SHA224_DIGEST_SIZE)
1944 updated_digestsize = SHA256_DIGEST_SIZE;
1945 else if (digestsize == SHA384_DIGEST_SIZE)
1946 updated_digestsize = SHA512_DIGEST_SIZE;
1947
1948 if (hctx_wr->dma_addr) {
1949 dma_unmap_single(&u_ctx->lldi.pdev->dev, hctx_wr->dma_addr,
1950 hctx_wr->dma_len, DMA_TO_DEVICE);
1951 hctx_wr->dma_addr = 0;
1952 }
1953 if (hctx_wr->isfinal || ((hctx_wr->processed + reqctx->reqlen) ==
1954 req->nbytes)) {
1955 if (hctx_wr->result == 1) {
1956 hctx_wr->result = 0;
1957 memcpy(req->result, input + sizeof(struct cpl_fw6_pld),
1958 digestsize);
1959 } else {
1960 memcpy(reqctx->partial_hash,
1961 input + sizeof(struct cpl_fw6_pld),
1962 updated_digestsize);
1963
1964 }
1965 goto unmap;
1966 }
1967 memcpy(reqctx->partial_hash, input + sizeof(struct cpl_fw6_pld),
1968 updated_digestsize);
1969
1970 err = chcr_ahash_continue(req);
1971 if (err)
1972 goto unmap;
1973 return;
1974unmap:
1975 if (hctx_wr->is_sg_map)
1976 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req);
1977
1978
1979out:
1980 req->base.complete(&req->base, err);
1981}
1982
1983/*
1984 * chcr_handle_resp - Unmap the DMA buffers associated with the request
1985 * @req: crypto request
1986 */
1987int chcr_handle_resp(struct crypto_async_request *req, unsigned char *input,
1988 int err)
1989{
1990 struct crypto_tfm *tfm = req->tfm;
1991 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
1992 struct adapter *adap = padap(ctx->dev);
1993
1994 switch (tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK) {
1995 case CRYPTO_ALG_TYPE_AEAD:
1996 chcr_handle_aead_resp(aead_request_cast(req), input, err);
1997 break;
1998
1999 case CRYPTO_ALG_TYPE_ABLKCIPHER:
2000 err = chcr_handle_cipher_resp(ablkcipher_request_cast(req),
2001 input, err);
2002 break;
2003
2004 case CRYPTO_ALG_TYPE_AHASH:
2005 chcr_handle_ahash_resp(ahash_request_cast(req), input, err);
2006 }
2007 atomic_inc(&adap->chcr_stats.complete);
2008 return err;
2009}
2010static int chcr_ahash_export(struct ahash_request *areq, void *out)
2011{
2012 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
2013 struct chcr_ahash_req_ctx *state = out;
2014
2015 state->reqlen = req_ctx->reqlen;
2016 state->data_len = req_ctx->data_len;
2017 memcpy(state->bfr1, req_ctx->reqbfr, req_ctx->reqlen);
2018 memcpy(state->partial_hash, req_ctx->partial_hash,
2019 CHCR_HASH_MAX_DIGEST_SIZE);
2020 chcr_init_hctx_per_wr(state);
2021 return 0;
2022}
2023
2024static int chcr_ahash_import(struct ahash_request *areq, const void *in)
2025{
2026 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
2027 struct chcr_ahash_req_ctx *state = (struct chcr_ahash_req_ctx *)in;
2028
2029 req_ctx->reqlen = state->reqlen;
2030 req_ctx->data_len = state->data_len;
2031 req_ctx->reqbfr = req_ctx->bfr1;
2032 req_ctx->skbfr = req_ctx->bfr2;
2033 memcpy(req_ctx->bfr1, state->bfr1, CHCR_HASH_MAX_BLOCK_SIZE_128);
2034 memcpy(req_ctx->partial_hash, state->partial_hash,
2035 CHCR_HASH_MAX_DIGEST_SIZE);
2036 chcr_init_hctx_per_wr(req_ctx);
2037 return 0;
2038}
2039
2040static int chcr_ahash_setkey(struct crypto_ahash *tfm, const u8 *key,
2041 unsigned int keylen)
2042{
2043 struct hmac_ctx *hmacctx = HMAC_CTX(h_ctx(tfm));
2044 unsigned int digestsize = crypto_ahash_digestsize(tfm);
2045 unsigned int bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm));
2046 unsigned int i, err = 0, updated_digestsize;
2047
2048 SHASH_DESC_ON_STACK(shash, hmacctx->base_hash);
2049
2050 /* use the key to calculate the ipad and opad. ipad will sent with the
2051 * first request's data. opad will be sent with the final hash result
2052 * ipad in hmacctx->ipad and opad in hmacctx->opad location
2053 */
2054 shash->tfm = hmacctx->base_hash;
2055 shash->flags = crypto_shash_get_flags(hmacctx->base_hash);
2056 if (keylen > bs) {
2057 err = crypto_shash_digest(shash, key, keylen,
2058 hmacctx->ipad);
2059 if (err)
2060 goto out;
2061 keylen = digestsize;
2062 } else {
2063 memcpy(hmacctx->ipad, key, keylen);
2064 }
2065 memset(hmacctx->ipad + keylen, 0, bs - keylen);
2066 memcpy(hmacctx->opad, hmacctx->ipad, bs);
2067
2068 for (i = 0; i < bs / sizeof(int); i++) {
2069 *((unsigned int *)(&hmacctx->ipad) + i) ^= IPAD_DATA;
2070 *((unsigned int *)(&hmacctx->opad) + i) ^= OPAD_DATA;
2071 }
2072
2073 updated_digestsize = digestsize;
2074 if (digestsize == SHA224_DIGEST_SIZE)
2075 updated_digestsize = SHA256_DIGEST_SIZE;
2076 else if (digestsize == SHA384_DIGEST_SIZE)
2077 updated_digestsize = SHA512_DIGEST_SIZE;
2078 err = chcr_compute_partial_hash(shash, hmacctx->ipad,
2079 hmacctx->ipad, digestsize);
2080 if (err)
2081 goto out;
2082 chcr_change_order(hmacctx->ipad, updated_digestsize);
2083
2084 err = chcr_compute_partial_hash(shash, hmacctx->opad,
2085 hmacctx->opad, digestsize);
2086 if (err)
2087 goto out;
2088 chcr_change_order(hmacctx->opad, updated_digestsize);
2089out:
2090 return err;
2091}
2092
2093static int chcr_aes_xts_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
2094 unsigned int key_len)
2095{
2096 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher));
2097 unsigned short context_size = 0;
2098 int err;
2099
2100 err = chcr_cipher_fallback_setkey(cipher, key, key_len);
2101 if (err)
2102 goto badkey_err;
2103
2104 memcpy(ablkctx->key, key, key_len);
2105 ablkctx->enckey_len = key_len;
2106 get_aes_decrypt_key(ablkctx->rrkey, ablkctx->key, key_len << 2);
2107 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD + key_len) >> 4;
2108 ablkctx->key_ctx_hdr =
2109 FILL_KEY_CTX_HDR((key_len == AES_KEYSIZE_256) ?
2110 CHCR_KEYCTX_CIPHER_KEY_SIZE_128 :
2111 CHCR_KEYCTX_CIPHER_KEY_SIZE_256,
2112 CHCR_KEYCTX_NO_KEY, 1,
2113 0, context_size);
2114 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_XTS;
2115 return 0;
2116badkey_err:
2117 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
2118 ablkctx->enckey_len = 0;
2119
2120 return err;
2121}
2122
2123static int chcr_sha_init(struct ahash_request *areq)
2124{
2125 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
2126 struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
2127 int digestsize = crypto_ahash_digestsize(tfm);
2128
2129 req_ctx->data_len = 0;
2130 req_ctx->reqlen = 0;
2131 req_ctx->reqbfr = req_ctx->bfr1;
2132 req_ctx->skbfr = req_ctx->bfr2;
2133 copy_hash_init_values(req_ctx->partial_hash, digestsize);
2134
2135 return 0;
2136}
2137
2138static int chcr_sha_cra_init(struct crypto_tfm *tfm)
2139{
2140 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
2141 sizeof(struct chcr_ahash_req_ctx));
2142 return chcr_device_init(crypto_tfm_ctx(tfm));
2143}
2144
2145static int chcr_hmac_init(struct ahash_request *areq)
2146{
2147 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
2148 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(areq);
2149 struct hmac_ctx *hmacctx = HMAC_CTX(h_ctx(rtfm));
2150 unsigned int digestsize = crypto_ahash_digestsize(rtfm);
2151 unsigned int bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm));
2152
2153 chcr_sha_init(areq);
2154 req_ctx->data_len = bs;
2155 if (is_hmac(crypto_ahash_tfm(rtfm))) {
2156 if (digestsize == SHA224_DIGEST_SIZE)
2157 memcpy(req_ctx->partial_hash, hmacctx->ipad,
2158 SHA256_DIGEST_SIZE);
2159 else if (digestsize == SHA384_DIGEST_SIZE)
2160 memcpy(req_ctx->partial_hash, hmacctx->ipad,
2161 SHA512_DIGEST_SIZE);
2162 else
2163 memcpy(req_ctx->partial_hash, hmacctx->ipad,
2164 digestsize);
2165 }
2166 return 0;
2167}
2168
2169static int chcr_hmac_cra_init(struct crypto_tfm *tfm)
2170{
2171 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
2172 struct hmac_ctx *hmacctx = HMAC_CTX(ctx);
2173 unsigned int digestsize =
2174 crypto_ahash_digestsize(__crypto_ahash_cast(tfm));
2175
2176 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
2177 sizeof(struct chcr_ahash_req_ctx));
2178 hmacctx->base_hash = chcr_alloc_shash(digestsize);
2179 if (IS_ERR(hmacctx->base_hash))
2180 return PTR_ERR(hmacctx->base_hash);
2181 return chcr_device_init(crypto_tfm_ctx(tfm));
2182}
2183
2184static void chcr_hmac_cra_exit(struct crypto_tfm *tfm)
2185{
2186 struct chcr_context *ctx = crypto_tfm_ctx(tfm);
2187 struct hmac_ctx *hmacctx = HMAC_CTX(ctx);
2188
2189 if (hmacctx->base_hash) {
2190 chcr_free_shash(hmacctx->base_hash);
2191 hmacctx->base_hash = NULL;
2192 }
2193}
2194
2195static int chcr_aead_common_init(struct aead_request *req,
2196 unsigned short op_type)
2197{
2198 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2199 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2200 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2201 int error = -EINVAL;
2202 unsigned int authsize = crypto_aead_authsize(tfm);
2203
2204 /* validate key size */
2205 if (aeadctx->enckey_len == 0)
2206 goto err;
2207 if (op_type && req->cryptlen < authsize)
2208 goto err;
2209 error = chcr_aead_dma_map(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev, req,
2210 op_type);
2211 if (error) {
2212 error = -ENOMEM;
2213 goto err;
2214 }
2215 reqctx->aad_nents = sg_nents_xlen(req->src, req->assoclen,
2216 CHCR_SRC_SG_SIZE, 0);
2217 reqctx->src_nents = sg_nents_xlen(req->src, req->cryptlen,
2218 CHCR_SRC_SG_SIZE, req->assoclen);
2219 return 0;
2220err:
2221 return error;
2222}
2223
2224static int chcr_aead_need_fallback(struct aead_request *req, int dst_nents,
2225 int aadmax, int wrlen,
2226 unsigned short op_type)
2227{
2228 unsigned int authsize = crypto_aead_authsize(crypto_aead_reqtfm(req));
2229
2230 if (((req->cryptlen - (op_type ? authsize : 0)) == 0) ||
2231 dst_nents > MAX_DSGL_ENT ||
2232 (req->assoclen > aadmax) ||
2233 (wrlen > SGE_MAX_WR_LEN))
2234 return 1;
2235 return 0;
2236}
2237
2238static int chcr_aead_fallback(struct aead_request *req, unsigned short op_type)
2239{
2240 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2241 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2242 struct aead_request *subreq = aead_request_ctx(req);
2243
2244 aead_request_set_tfm(subreq, aeadctx->sw_cipher);
2245 aead_request_set_callback(subreq, req->base.flags,
2246 req->base.complete, req->base.data);
2247 aead_request_set_crypt(subreq, req->src, req->dst, req->cryptlen,
2248 req->iv);
2249 aead_request_set_ad(subreq, req->assoclen);
2250 return op_type ? crypto_aead_decrypt(subreq) :
2251 crypto_aead_encrypt(subreq);
2252}
2253
2254static struct sk_buff *create_authenc_wr(struct aead_request *req,
2255 unsigned short qid,
2256 int size,
2257 unsigned short op_type)
2258{
2259 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2260 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2261 struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx);
2262 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2263 struct sk_buff *skb = NULL;
2264 struct chcr_wr *chcr_req;
2265 struct cpl_rx_phys_dsgl *phys_cpl;
2266 struct ulptx_sgl *ulptx;
2267 unsigned int transhdr_len;
2268 unsigned int dst_size = 0, temp, subtype = get_aead_subtype(tfm);
2269 unsigned int kctx_len = 0, dnents;
2270 unsigned int assoclen = req->assoclen;
2271 unsigned int authsize = crypto_aead_authsize(tfm);
2272 int error = -EINVAL;
2273 int null = 0;
2274 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
2275 GFP_ATOMIC;
2276 struct adapter *adap = padap(a_ctx(tfm)->dev);
2277
2278 if (req->cryptlen == 0)
2279 return NULL;
2280
2281 reqctx->b0_dma = 0;
2282 if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL ||
2283 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
2284 null = 1;
2285 assoclen = 0;
2286 }
2287 error = chcr_aead_common_init(req, op_type);
2288 if (error)
2289 return ERR_PTR(error);
2290 dnents = sg_nents_xlen(req->dst, assoclen, CHCR_DST_SG_SIZE, 0);
2291 dnents += sg_nents_xlen(req->dst, req->cryptlen +
2292 (op_type ? -authsize : authsize), CHCR_DST_SG_SIZE,
2293 req->assoclen);
2294 dnents += MIN_AUTH_SG; // For IV
2295
2296 dst_size = get_space_for_phys_dsgl(dnents);
2297 kctx_len = (ntohl(KEY_CONTEXT_CTX_LEN_V(aeadctx->key_ctx_hdr)) << 4)
2298 - sizeof(chcr_req->key_ctx);
2299 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
2300 reqctx->imm = (transhdr_len + assoclen + IV + req->cryptlen) <
2301 SGE_MAX_WR_LEN;
2302 temp = reqctx->imm ? roundup(assoclen + IV + req->cryptlen, 16)
2303 : (sgl_len(reqctx->src_nents + reqctx->aad_nents
2304 + MIN_GCM_SG) * 8);
2305 transhdr_len += temp;
2306 transhdr_len = roundup(transhdr_len, 16);
2307
2308 if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE,
2309 transhdr_len, op_type)) {
2310 atomic_inc(&adap->chcr_stats.fallback);
2311 chcr_aead_dma_unmap(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev, req,
2312 op_type);
2313 return ERR_PTR(chcr_aead_fallback(req, op_type));
2314 }
2315 skb = alloc_skb(SGE_MAX_WR_LEN, flags);
2316 if (!skb) {
2317 error = -ENOMEM;
2318 goto err;
2319 }
2320
2321 chcr_req = __skb_put_zero(skb, transhdr_len);
2322
2323 temp = (op_type == CHCR_ENCRYPT_OP) ? 0 : authsize;
2324
2325 /*
2326 * Input order is AAD,IV and Payload. where IV should be included as
2327 * the part of authdata. All other fields should be filled according
2328 * to the hardware spec
2329 */
2330 chcr_req->sec_cpl.op_ivinsrtofst =
2331 FILL_SEC_CPL_OP_IVINSR(a_ctx(tfm)->dev->rx_channel_id, 2,
2332 assoclen + 1);
2333 chcr_req->sec_cpl.pldlen = htonl(assoclen + IV + req->cryptlen);
2334 chcr_req->sec_cpl.aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI(
2335 assoclen ? 1 : 0, assoclen,
2336 assoclen + IV + 1,
2337 (temp & 0x1F0) >> 4);
2338 chcr_req->sec_cpl.cipherstop_lo_authinsert = FILL_SEC_CPL_AUTHINSERT(
2339 temp & 0xF,
2340 null ? 0 : assoclen + IV + 1,
2341 temp, temp);
2342 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL ||
2343 subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA)
2344 temp = CHCR_SCMD_CIPHER_MODE_AES_CTR;
2345 else
2346 temp = CHCR_SCMD_CIPHER_MODE_AES_CBC;
2347 chcr_req->sec_cpl.seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(op_type,
2348 (op_type == CHCR_ENCRYPT_OP) ? 1 : 0,
2349 temp,
2350 actx->auth_mode, aeadctx->hmac_ctrl,
2351 IV >> 1);
2352 chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1,
2353 0, 0, dst_size);
2354
2355 chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr;
2356 if (op_type == CHCR_ENCRYPT_OP ||
2357 subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
2358 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL)
2359 memcpy(chcr_req->key_ctx.key, aeadctx->key,
2360 aeadctx->enckey_len);
2361 else
2362 memcpy(chcr_req->key_ctx.key, actx->dec_rrkey,
2363 aeadctx->enckey_len);
2364
2365 memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16),
2366 actx->h_iopad, kctx_len - roundup(aeadctx->enckey_len, 16));
2367 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
2368 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
2369 memcpy(reqctx->iv, aeadctx->nonce, CTR_RFC3686_NONCE_SIZE);
2370 memcpy(reqctx->iv + CTR_RFC3686_NONCE_SIZE, req->iv,
2371 CTR_RFC3686_IV_SIZE);
2372 *(__be32 *)(reqctx->iv + CTR_RFC3686_NONCE_SIZE +
2373 CTR_RFC3686_IV_SIZE) = cpu_to_be32(1);
2374 } else {
2375 memcpy(reqctx->iv, req->iv, IV);
2376 }
2377 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
2378 ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size);
2379 chcr_add_aead_dst_ent(req, phys_cpl, assoclen, op_type, qid);
2380 chcr_add_aead_src_ent(req, ulptx, assoclen, op_type);
2381 atomic_inc(&adap->chcr_stats.cipher_rqst);
2382 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size +
2383 kctx_len + (reqctx->imm ? (assoclen + IV + req->cryptlen) : 0);
2384 create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, size,
2385 transhdr_len, temp, 0);
2386 reqctx->skb = skb;
2387 reqctx->op = op_type;
2388
2389 return skb;
2390err:
2391 chcr_aead_dma_unmap(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev, req,
2392 op_type);
2393
2394 return ERR_PTR(error);
2395}
2396
2397int chcr_aead_dma_map(struct device *dev,
2398 struct aead_request *req,
2399 unsigned short op_type)
2400{
2401 int error;
2402 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2403 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2404 unsigned int authsize = crypto_aead_authsize(tfm);
2405 int dst_size;
2406
2407 dst_size = req->assoclen + req->cryptlen + (op_type ?
2408 -authsize : authsize);
2409 if (!req->cryptlen || !dst_size)
2410 return 0;
2411 reqctx->iv_dma = dma_map_single(dev, reqctx->iv, IV,
2412 DMA_BIDIRECTIONAL);
2413 if (dma_mapping_error(dev, reqctx->iv_dma))
2414 return -ENOMEM;
2415
2416 if (req->src == req->dst) {
2417 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2418 DMA_BIDIRECTIONAL);
2419 if (!error)
2420 goto err;
2421 } else {
2422 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2423 DMA_TO_DEVICE);
2424 if (!error)
2425 goto err;
2426 error = dma_map_sg(dev, req->dst, sg_nents(req->dst),
2427 DMA_FROM_DEVICE);
2428 if (!error) {
2429 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2430 DMA_TO_DEVICE);
2431 goto err;
2432 }
2433 }
2434
2435 return 0;
2436err:
2437 dma_unmap_single(dev, reqctx->iv_dma, IV, DMA_BIDIRECTIONAL);
2438 return -ENOMEM;
2439}
2440
2441void chcr_aead_dma_unmap(struct device *dev,
2442 struct aead_request *req,
2443 unsigned short op_type)
2444{
2445 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2446 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2447 unsigned int authsize = crypto_aead_authsize(tfm);
2448 int dst_size;
2449
2450 dst_size = req->assoclen + req->cryptlen + (op_type ?
2451 -authsize : authsize);
2452 if (!req->cryptlen || !dst_size)
2453 return;
2454
2455 dma_unmap_single(dev, reqctx->iv_dma, IV,
2456 DMA_BIDIRECTIONAL);
2457 if (req->src == req->dst) {
2458 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2459 DMA_BIDIRECTIONAL);
2460 } else {
2461 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2462 DMA_TO_DEVICE);
2463 dma_unmap_sg(dev, req->dst, sg_nents(req->dst),
2464 DMA_FROM_DEVICE);
2465 }
2466}
2467
2468void chcr_add_aead_src_ent(struct aead_request *req,
2469 struct ulptx_sgl *ulptx,
2470 unsigned int assoclen,
2471 unsigned short op_type)
2472{
2473 struct ulptx_walk ulp_walk;
2474 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2475
2476 if (reqctx->imm) {
2477 u8 *buf = (u8 *)ulptx;
2478
2479 if (reqctx->b0_dma) {
2480 memcpy(buf, reqctx->scratch_pad, reqctx->b0_len);
2481 buf += reqctx->b0_len;
2482 }
2483 sg_pcopy_to_buffer(req->src, sg_nents(req->src),
2484 buf, assoclen, 0);
2485 buf += assoclen;
2486 memcpy(buf, reqctx->iv, IV);
2487 buf += IV;
2488 sg_pcopy_to_buffer(req->src, sg_nents(req->src),
2489 buf, req->cryptlen, req->assoclen);
2490 } else {
2491 ulptx_walk_init(&ulp_walk, ulptx);
2492 if (reqctx->b0_dma)
2493 ulptx_walk_add_page(&ulp_walk, reqctx->b0_len,
2494 &reqctx->b0_dma);
2495 ulptx_walk_add_sg(&ulp_walk, req->src, assoclen, 0);
2496 ulptx_walk_add_page(&ulp_walk, IV, &reqctx->iv_dma);
2497 ulptx_walk_add_sg(&ulp_walk, req->src, req->cryptlen,
2498 req->assoclen);
2499 ulptx_walk_end(&ulp_walk);
2500 }
2501}
2502
2503void chcr_add_aead_dst_ent(struct aead_request *req,
2504 struct cpl_rx_phys_dsgl *phys_cpl,
2505 unsigned int assoclen,
2506 unsigned short op_type,
2507 unsigned short qid)
2508{
2509 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2510 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2511 struct dsgl_walk dsgl_walk;
2512 unsigned int authsize = crypto_aead_authsize(tfm);
2513 u32 temp;
2514
2515 dsgl_walk_init(&dsgl_walk, phys_cpl);
2516 if (reqctx->b0_dma)
2517 dsgl_walk_add_page(&dsgl_walk, reqctx->b0_len, &reqctx->b0_dma);
2518 dsgl_walk_add_sg(&dsgl_walk, req->dst, assoclen, 0);
2519 dsgl_walk_add_page(&dsgl_walk, IV, &reqctx->iv_dma);
2520 temp = req->cryptlen + (op_type ? -authsize : authsize);
2521 dsgl_walk_add_sg(&dsgl_walk, req->dst, temp, req->assoclen);
2522 dsgl_walk_end(&dsgl_walk, qid);
2523}
2524
2525void chcr_add_cipher_src_ent(struct ablkcipher_request *req,
2526 struct ulptx_sgl *ulptx,
2527 struct cipher_wr_param *wrparam)
2528{
2529 struct ulptx_walk ulp_walk;
2530 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
2531
2532 if (reqctx->imm) {
2533 u8 *buf = (u8 *)ulptx;
2534
2535 memcpy(buf, reqctx->iv, IV);
2536 buf += IV;
2537 sg_pcopy_to_buffer(req->src, sg_nents(req->src),
2538 buf, wrparam->bytes, reqctx->processed);
2539 } else {
2540 ulptx_walk_init(&ulp_walk, ulptx);
2541 ulptx_walk_add_page(&ulp_walk, IV, &reqctx->iv_dma);
2542 ulptx_walk_add_sg(&ulp_walk, reqctx->srcsg, wrparam->bytes,
2543 reqctx->src_ofst);
2544 reqctx->srcsg = ulp_walk.last_sg;
2545 reqctx->src_ofst = ulp_walk.last_sg_len;
2546 ulptx_walk_end(&ulp_walk);
2547 }
2548}
2549
2550void chcr_add_cipher_dst_ent(struct ablkcipher_request *req,
2551 struct cpl_rx_phys_dsgl *phys_cpl,
2552 struct cipher_wr_param *wrparam,
2553 unsigned short qid)
2554{
2555 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
2556 struct dsgl_walk dsgl_walk;
2557
2558 dsgl_walk_init(&dsgl_walk, phys_cpl);
2559 dsgl_walk_add_page(&dsgl_walk, IV, &reqctx->iv_dma);
2560 dsgl_walk_add_sg(&dsgl_walk, reqctx->dstsg, wrparam->bytes,
2561 reqctx->dst_ofst);
2562 reqctx->dstsg = dsgl_walk.last_sg;
2563 reqctx->dst_ofst = dsgl_walk.last_sg_len;
2564
2565 dsgl_walk_end(&dsgl_walk, qid);
2566}
2567
2568void chcr_add_hash_src_ent(struct ahash_request *req,
2569 struct ulptx_sgl *ulptx,
2570 struct hash_wr_param *param)
2571{
2572 struct ulptx_walk ulp_walk;
2573 struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req);
2574
2575 if (reqctx->hctx_wr.imm) {
2576 u8 *buf = (u8 *)ulptx;
2577
2578 if (param->bfr_len) {
2579 memcpy(buf, reqctx->reqbfr, param->bfr_len);
2580 buf += param->bfr_len;
2581 }
2582
2583 sg_pcopy_to_buffer(reqctx->hctx_wr.srcsg,
2584 sg_nents(reqctx->hctx_wr.srcsg), buf,
2585 param->sg_len, 0);
2586 } else {
2587 ulptx_walk_init(&ulp_walk, ulptx);
2588 if (param->bfr_len)
2589 ulptx_walk_add_page(&ulp_walk, param->bfr_len,
2590 &reqctx->hctx_wr.dma_addr);
2591 ulptx_walk_add_sg(&ulp_walk, reqctx->hctx_wr.srcsg,
2592 param->sg_len, reqctx->hctx_wr.src_ofst);
2593 reqctx->hctx_wr.srcsg = ulp_walk.last_sg;
2594 reqctx->hctx_wr.src_ofst = ulp_walk.last_sg_len;
2595 ulptx_walk_end(&ulp_walk);
2596 }
2597}
2598
2599int chcr_hash_dma_map(struct device *dev,
2600 struct ahash_request *req)
2601{
2602 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
2603 int error = 0;
2604
2605 if (!req->nbytes)
2606 return 0;
2607 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2608 DMA_TO_DEVICE);
2609 if (!error)
2610 return -ENOMEM;
2611 req_ctx->hctx_wr.is_sg_map = 1;
2612 return 0;
2613}
2614
2615void chcr_hash_dma_unmap(struct device *dev,
2616 struct ahash_request *req)
2617{
2618 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req);
2619
2620 if (!req->nbytes)
2621 return;
2622
2623 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2624 DMA_TO_DEVICE);
2625 req_ctx->hctx_wr.is_sg_map = 0;
2626
2627}
2628
2629int chcr_cipher_dma_map(struct device *dev,
2630 struct ablkcipher_request *req)
2631{
2632 int error;
2633 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
2634
2635 reqctx->iv_dma = dma_map_single(dev, reqctx->iv, IV,
2636 DMA_BIDIRECTIONAL);
2637 if (dma_mapping_error(dev, reqctx->iv_dma))
2638 return -ENOMEM;
2639
2640 if (req->src == req->dst) {
2641 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2642 DMA_BIDIRECTIONAL);
2643 if (!error)
2644 goto err;
2645 } else {
2646 error = dma_map_sg(dev, req->src, sg_nents(req->src),
2647 DMA_TO_DEVICE);
2648 if (!error)
2649 goto err;
2650 error = dma_map_sg(dev, req->dst, sg_nents(req->dst),
2651 DMA_FROM_DEVICE);
2652 if (!error) {
2653 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2654 DMA_TO_DEVICE);
2655 goto err;
2656 }
2657 }
2658
2659 return 0;
2660err:
2661 dma_unmap_single(dev, reqctx->iv_dma, IV, DMA_BIDIRECTIONAL);
2662 return -ENOMEM;
2663}
2664
2665void chcr_cipher_dma_unmap(struct device *dev,
2666 struct ablkcipher_request *req)
2667{
2668 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req);
2669
2670 dma_unmap_single(dev, reqctx->iv_dma, IV,
2671 DMA_BIDIRECTIONAL);
2672 if (req->src == req->dst) {
2673 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2674 DMA_BIDIRECTIONAL);
2675 } else {
2676 dma_unmap_sg(dev, req->src, sg_nents(req->src),
2677 DMA_TO_DEVICE);
2678 dma_unmap_sg(dev, req->dst, sg_nents(req->dst),
2679 DMA_FROM_DEVICE);
2680 }
2681}
2682
2683static int set_msg_len(u8 *block, unsigned int msglen, int csize)
2684{
2685 __be32 data;
2686
2687 memset(block, 0, csize);
2688 block += csize;
2689
2690 if (csize >= 4)
2691 csize = 4;
2692 else if (msglen > (unsigned int)(1 << (8 * csize)))
2693 return -EOVERFLOW;
2694
2695 data = cpu_to_be32(msglen);
2696 memcpy(block - csize, (u8 *)&data + 4 - csize, csize);
2697
2698 return 0;
2699}
2700
2701static void generate_b0(struct aead_request *req,
2702 struct chcr_aead_ctx *aeadctx,
2703 unsigned short op_type)
2704{
2705 unsigned int l, lp, m;
2706 int rc;
2707 struct crypto_aead *aead = crypto_aead_reqtfm(req);
2708 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2709 u8 *b0 = reqctx->scratch_pad;
2710
2711 m = crypto_aead_authsize(aead);
2712
2713 memcpy(b0, reqctx->iv, 16);
2714
2715 lp = b0[0];
2716 l = lp + 1;
2717
2718 /* set m, bits 3-5 */
2719 *b0 |= (8 * ((m - 2) / 2));
2720
2721 /* set adata, bit 6, if associated data is used */
2722 if (req->assoclen)
2723 *b0 |= 64;
2724 rc = set_msg_len(b0 + 16 - l,
2725 (op_type == CHCR_DECRYPT_OP) ?
2726 req->cryptlen - m : req->cryptlen, l);
2727}
2728
2729static inline int crypto_ccm_check_iv(const u8 *iv)
2730{
2731 /* 2 <= L <= 8, so 1 <= L' <= 7. */
2732 if (iv[0] < 1 || iv[0] > 7)
2733 return -EINVAL;
2734
2735 return 0;
2736}
2737
2738static int ccm_format_packet(struct aead_request *req,
2739 struct chcr_aead_ctx *aeadctx,
2740 unsigned int sub_type,
2741 unsigned short op_type)
2742{
2743 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2744 int rc = 0;
2745
2746 if (sub_type == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) {
2747 reqctx->iv[0] = 3;
2748 memcpy(reqctx->iv + 1, &aeadctx->salt[0], 3);
2749 memcpy(reqctx->iv + 4, req->iv, 8);
2750 memset(reqctx->iv + 12, 0, 4);
2751 *((unsigned short *)(reqctx->scratch_pad + 16)) =
2752 htons(req->assoclen - 8);
2753 } else {
2754 memcpy(reqctx->iv, req->iv, 16);
2755 *((unsigned short *)(reqctx->scratch_pad + 16)) =
2756 htons(req->assoclen);
2757 }
2758 generate_b0(req, aeadctx, op_type);
2759 /* zero the ctr value */
2760 memset(reqctx->iv + 15 - reqctx->iv[0], 0, reqctx->iv[0] + 1);
2761 return rc;
2762}
2763
2764static void fill_sec_cpl_for_aead(struct cpl_tx_sec_pdu *sec_cpl,
2765 unsigned int dst_size,
2766 struct aead_request *req,
2767 unsigned short op_type)
2768{
2769 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2770 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2771 unsigned int cipher_mode = CHCR_SCMD_CIPHER_MODE_AES_CCM;
2772 unsigned int mac_mode = CHCR_SCMD_AUTH_MODE_CBCMAC;
2773 unsigned int c_id = a_ctx(tfm)->dev->rx_channel_id;
2774 unsigned int ccm_xtra;
2775 unsigned char tag_offset = 0, auth_offset = 0;
2776 unsigned int assoclen;
2777
2778 if (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309)
2779 assoclen = req->assoclen - 8;
2780 else
2781 assoclen = req->assoclen;
2782 ccm_xtra = CCM_B0_SIZE +
2783 ((assoclen) ? CCM_AAD_FIELD_SIZE : 0);
2784
2785 auth_offset = req->cryptlen ?
2786 (assoclen + IV + 1 + ccm_xtra) : 0;
2787 if (op_type == CHCR_DECRYPT_OP) {
2788 if (crypto_aead_authsize(tfm) != req->cryptlen)
2789 tag_offset = crypto_aead_authsize(tfm);
2790 else
2791 auth_offset = 0;
2792 }
2793
2794
2795 sec_cpl->op_ivinsrtofst = FILL_SEC_CPL_OP_IVINSR(c_id,
2796 2, assoclen + 1 + ccm_xtra);
2797 sec_cpl->pldlen =
2798 htonl(assoclen + IV + req->cryptlen + ccm_xtra);
2799 /* For CCM there wil be b0 always. So AAD start will be 1 always */
2800 sec_cpl->aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI(
2801 1, assoclen + ccm_xtra, assoclen
2802 + IV + 1 + ccm_xtra, 0);
2803
2804 sec_cpl->cipherstop_lo_authinsert = FILL_SEC_CPL_AUTHINSERT(0,
2805 auth_offset, tag_offset,
2806 (op_type == CHCR_ENCRYPT_OP) ? 0 :
2807 crypto_aead_authsize(tfm));
2808 sec_cpl->seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(op_type,
2809 (op_type == CHCR_ENCRYPT_OP) ? 0 : 1,
2810 cipher_mode, mac_mode,
2811 aeadctx->hmac_ctrl, IV >> 1);
2812
2813 sec_cpl->ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1, 0,
2814 0, dst_size);
2815}
2816
2817static int aead_ccm_validate_input(unsigned short op_type,
2818 struct aead_request *req,
2819 struct chcr_aead_ctx *aeadctx,
2820 unsigned int sub_type)
2821{
2822 if (sub_type != CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) {
2823 if (crypto_ccm_check_iv(req->iv)) {
2824 pr_err("CCM: IV check fails\n");
2825 return -EINVAL;
2826 }
2827 } else {
2828 if (req->assoclen != 16 && req->assoclen != 20) {
2829 pr_err("RFC4309: Invalid AAD length %d\n",
2830 req->assoclen);
2831 return -EINVAL;
2832 }
2833 }
2834 return 0;
2835}
2836
2837static struct sk_buff *create_aead_ccm_wr(struct aead_request *req,
2838 unsigned short qid,
2839 int size,
2840 unsigned short op_type)
2841{
2842 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2843 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2844 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2845 struct sk_buff *skb = NULL;
2846 struct chcr_wr *chcr_req;
2847 struct cpl_rx_phys_dsgl *phys_cpl;
2848 struct ulptx_sgl *ulptx;
2849 unsigned int transhdr_len;
2850 unsigned int dst_size = 0, kctx_len, dnents, temp;
2851 unsigned int sub_type, assoclen = req->assoclen;
2852 unsigned int authsize = crypto_aead_authsize(tfm);
2853 int error = -EINVAL;
2854 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
2855 GFP_ATOMIC;
2856 struct adapter *adap = padap(a_ctx(tfm)->dev);
2857
2858 reqctx->b0_dma = 0;
2859 sub_type = get_aead_subtype(tfm);
2860 if (sub_type == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309)
2861 assoclen -= 8;
2862 error = chcr_aead_common_init(req, op_type);
2863 if (error)
2864 return ERR_PTR(error);
2865
2866
2867 reqctx->b0_len = CCM_B0_SIZE + (assoclen ? CCM_AAD_FIELD_SIZE : 0);
2868 error = aead_ccm_validate_input(op_type, req, aeadctx, sub_type);
2869 if (error)
2870 goto err;
2871 dnents = sg_nents_xlen(req->dst, assoclen, CHCR_DST_SG_SIZE, 0);
2872 dnents += sg_nents_xlen(req->dst, req->cryptlen
2873 + (op_type ? -authsize : authsize),
2874 CHCR_DST_SG_SIZE, req->assoclen);
2875 dnents += MIN_CCM_SG; // For IV and B0
2876 dst_size = get_space_for_phys_dsgl(dnents);
2877 kctx_len = roundup(aeadctx->enckey_len, 16) * 2;
2878 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
2879 reqctx->imm = (transhdr_len + assoclen + IV + req->cryptlen +
2880 reqctx->b0_len) <= SGE_MAX_WR_LEN;
2881 temp = reqctx->imm ? roundup(assoclen + IV + req->cryptlen +
2882 reqctx->b0_len, 16) :
2883 (sgl_len(reqctx->src_nents + reqctx->aad_nents +
2884 MIN_CCM_SG) * 8);
2885 transhdr_len += temp;
2886 transhdr_len = roundup(transhdr_len, 16);
2887
2888 if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE -
2889 reqctx->b0_len, transhdr_len, op_type)) {
2890 atomic_inc(&adap->chcr_stats.fallback);
2891 chcr_aead_dma_unmap(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev, req,
2892 op_type);
2893 return ERR_PTR(chcr_aead_fallback(req, op_type));
2894 }
2895 skb = alloc_skb(SGE_MAX_WR_LEN, flags);
2896
2897 if (!skb) {
2898 error = -ENOMEM;
2899 goto err;
2900 }
2901
2902 chcr_req = (struct chcr_wr *) __skb_put_zero(skb, transhdr_len);
2903
2904 fill_sec_cpl_for_aead(&chcr_req->sec_cpl, dst_size, req, op_type);
2905
2906 chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr;
2907 memcpy(chcr_req->key_ctx.key, aeadctx->key, aeadctx->enckey_len);
2908 memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16),
2909 aeadctx->key, aeadctx->enckey_len);
2910
2911 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
2912 ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size);
2913 error = ccm_format_packet(req, aeadctx, sub_type, op_type);
2914 if (error)
2915 goto dstmap_fail;
2916
2917 reqctx->b0_dma = dma_map_single(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev,
2918 &reqctx->scratch_pad, reqctx->b0_len,
2919 DMA_BIDIRECTIONAL);
2920 if (dma_mapping_error(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev,
2921 reqctx->b0_dma)) {
2922 error = -ENOMEM;
2923 goto dstmap_fail;
2924 }
2925
2926 chcr_add_aead_dst_ent(req, phys_cpl, assoclen, op_type, qid);
2927 chcr_add_aead_src_ent(req, ulptx, assoclen, op_type);
2928
2929 atomic_inc(&adap->chcr_stats.aead_rqst);
2930 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size +
2931 kctx_len + (reqctx->imm ? (assoclen + IV + req->cryptlen +
2932 reqctx->b0_len) : 0);
2933 create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, 0,
2934 transhdr_len, temp, 0);
2935 reqctx->skb = skb;
2936 reqctx->op = op_type;
2937
2938 return skb;
2939dstmap_fail:
2940 kfree_skb(skb);
2941err:
2942 chcr_aead_dma_unmap(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev, req, op_type);
2943 return ERR_PTR(error);
2944}
2945
2946static struct sk_buff *create_gcm_wr(struct aead_request *req,
2947 unsigned short qid,
2948 int size,
2949 unsigned short op_type)
2950{
2951 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
2952 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
2953 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
2954 struct sk_buff *skb = NULL;
2955 struct chcr_wr *chcr_req;
2956 struct cpl_rx_phys_dsgl *phys_cpl;
2957 struct ulptx_sgl *ulptx;
2958 unsigned int transhdr_len, dnents = 0;
2959 unsigned int dst_size = 0, temp = 0, kctx_len, assoclen = req->assoclen;
2960 unsigned int authsize = crypto_aead_authsize(tfm);
2961 int error = -EINVAL;
2962 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
2963 GFP_ATOMIC;
2964 struct adapter *adap = padap(a_ctx(tfm)->dev);
2965
2966 if (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106)
2967 assoclen = req->assoclen - 8;
2968
2969 reqctx->b0_dma = 0;
2970 error = chcr_aead_common_init(req, op_type);
2971 if (error)
2972 return ERR_PTR(error);
2973 dnents = sg_nents_xlen(req->dst, assoclen, CHCR_DST_SG_SIZE, 0);
2974 dnents += sg_nents_xlen(req->dst, req->cryptlen +
2975 (op_type ? -authsize : authsize),
2976 CHCR_DST_SG_SIZE, req->assoclen);
2977 dnents += MIN_GCM_SG; // For IV
2978 dst_size = get_space_for_phys_dsgl(dnents);
2979 kctx_len = roundup(aeadctx->enckey_len, 16) + AEAD_H_SIZE;
2980 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size);
2981 reqctx->imm = (transhdr_len + assoclen + IV + req->cryptlen) <=
2982 SGE_MAX_WR_LEN;
2983 temp = reqctx->imm ? roundup(assoclen + IV + req->cryptlen, 16) :
2984 (sgl_len(reqctx->src_nents +
2985 reqctx->aad_nents + MIN_GCM_SG) * 8);
2986 transhdr_len += temp;
2987 transhdr_len = roundup(transhdr_len, 16);
2988 if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE,
2989 transhdr_len, op_type)) {
2990 atomic_inc(&adap->chcr_stats.fallback);
2991 chcr_aead_dma_unmap(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev, req,
2992 op_type);
2993 return ERR_PTR(chcr_aead_fallback(req, op_type));
2994 }
2995 skb = alloc_skb(SGE_MAX_WR_LEN, flags);
2996 if (!skb) {
2997 error = -ENOMEM;
2998 goto err;
2999 }
3000
3001 chcr_req = __skb_put_zero(skb, transhdr_len);
3002
3003 //Offset of tag from end
3004 temp = (op_type == CHCR_ENCRYPT_OP) ? 0 : authsize;
3005 chcr_req->sec_cpl.op_ivinsrtofst = FILL_SEC_CPL_OP_IVINSR(
3006 a_ctx(tfm)->dev->rx_channel_id, 2,
3007 (assoclen + 1));
3008 chcr_req->sec_cpl.pldlen =
3009 htonl(assoclen + IV + req->cryptlen);
3010 chcr_req->sec_cpl.aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI(
3011 assoclen ? 1 : 0, assoclen,
3012 assoclen + IV + 1, 0);
3013 chcr_req->sec_cpl.cipherstop_lo_authinsert =
3014 FILL_SEC_CPL_AUTHINSERT(0, assoclen + IV + 1,
3015 temp, temp);
3016 chcr_req->sec_cpl.seqno_numivs =
3017 FILL_SEC_CPL_SCMD0_SEQNO(op_type, (op_type ==
3018 CHCR_ENCRYPT_OP) ? 1 : 0,
3019 CHCR_SCMD_CIPHER_MODE_AES_GCM,
3020 CHCR_SCMD_AUTH_MODE_GHASH,
3021 aeadctx->hmac_ctrl, IV >> 1);
3022 chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1,
3023 0, 0, dst_size);
3024 chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr;
3025 memcpy(chcr_req->key_ctx.key, aeadctx->key, aeadctx->enckey_len);
3026 memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16),
3027 GCM_CTX(aeadctx)->ghash_h, AEAD_H_SIZE);
3028
3029 /* prepare a 16 byte iv */
3030 /* S A L T | IV | 0x00000001 */
3031 if (get_aead_subtype(tfm) ==
3032 CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106) {
3033 memcpy(reqctx->iv, aeadctx->salt, 4);
3034 memcpy(reqctx->iv + 4, req->iv, GCM_RFC4106_IV_SIZE);
3035 } else {
3036 memcpy(reqctx->iv, req->iv, GCM_AES_IV_SIZE);
3037 }
3038 *((unsigned int *)(reqctx->iv + 12)) = htonl(0x01);
3039
3040 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len);
3041 ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size);
3042
3043 chcr_add_aead_dst_ent(req, phys_cpl, assoclen, op_type, qid);
3044 chcr_add_aead_src_ent(req, ulptx, assoclen, op_type);
3045 atomic_inc(&adap->chcr_stats.aead_rqst);
3046 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size +
3047 kctx_len + (reqctx->imm ? (assoclen + IV + req->cryptlen) : 0);
3048 create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, size,
3049 transhdr_len, temp, reqctx->verify);
3050 reqctx->skb = skb;
3051 reqctx->op = op_type;
3052 return skb;
3053
3054err:
3055 chcr_aead_dma_unmap(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev, req, op_type);
3056 return ERR_PTR(error);
3057}
3058
3059
3060
3061static int chcr_aead_cra_init(struct crypto_aead *tfm)
3062{
3063 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3064 struct aead_alg *alg = crypto_aead_alg(tfm);
3065
3066 aeadctx->sw_cipher = crypto_alloc_aead(alg->base.cra_name, 0,
3067 CRYPTO_ALG_NEED_FALLBACK |
3068 CRYPTO_ALG_ASYNC);
3069 if (IS_ERR(aeadctx->sw_cipher))
3070 return PTR_ERR(aeadctx->sw_cipher);
3071 crypto_aead_set_reqsize(tfm, max(sizeof(struct chcr_aead_reqctx),
3072 sizeof(struct aead_request) +
3073 crypto_aead_reqsize(aeadctx->sw_cipher)));
3074 return chcr_device_init(a_ctx(tfm));
3075}
3076
3077static void chcr_aead_cra_exit(struct crypto_aead *tfm)
3078{
3079 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3080
3081 crypto_free_aead(aeadctx->sw_cipher);
3082}
3083
3084static int chcr_authenc_null_setauthsize(struct crypto_aead *tfm,
3085 unsigned int authsize)
3086{
3087 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3088
3089 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NOP;
3090 aeadctx->mayverify = VERIFY_HW;
3091 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
3092}
3093static int chcr_authenc_setauthsize(struct crypto_aead *tfm,
3094 unsigned int authsize)
3095{
3096 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3097 u32 maxauth = crypto_aead_maxauthsize(tfm);
3098
3099 /*SHA1 authsize in ipsec is 12 instead of 10 i.e maxauthsize / 2 is not
3100 * true for sha1. authsize == 12 condition should be before
3101 * authsize == (maxauth >> 1)
3102 */
3103 if (authsize == ICV_4) {
3104 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1;
3105 aeadctx->mayverify = VERIFY_HW;
3106 } else if (authsize == ICV_6) {
3107 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL2;
3108 aeadctx->mayverify = VERIFY_HW;
3109 } else if (authsize == ICV_10) {
3110 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_TRUNC_RFC4366;
3111 aeadctx->mayverify = VERIFY_HW;
3112 } else if (authsize == ICV_12) {
3113 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
3114 aeadctx->mayverify = VERIFY_HW;
3115 } else if (authsize == ICV_14) {
3116 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3;
3117 aeadctx->mayverify = VERIFY_HW;
3118 } else if (authsize == (maxauth >> 1)) {
3119 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
3120 aeadctx->mayverify = VERIFY_HW;
3121 } else if (authsize == maxauth) {
3122 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3123 aeadctx->mayverify = VERIFY_HW;
3124 } else {
3125 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3126 aeadctx->mayverify = VERIFY_SW;
3127 }
3128 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
3129}
3130
3131
3132static int chcr_gcm_setauthsize(struct crypto_aead *tfm, unsigned int authsize)
3133{
3134 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3135
3136 switch (authsize) {
3137 case ICV_4:
3138 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1;
3139 aeadctx->mayverify = VERIFY_HW;
3140 break;
3141 case ICV_8:
3142 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
3143 aeadctx->mayverify = VERIFY_HW;
3144 break;
3145 case ICV_12:
3146 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
3147 aeadctx->mayverify = VERIFY_HW;
3148 break;
3149 case ICV_14:
3150 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3;
3151 aeadctx->mayverify = VERIFY_HW;
3152 break;
3153 case ICV_16:
3154 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3155 aeadctx->mayverify = VERIFY_HW;
3156 break;
3157 case ICV_13:
3158 case ICV_15:
3159 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3160 aeadctx->mayverify = VERIFY_SW;
3161 break;
3162 default:
3163
3164 crypto_tfm_set_flags((struct crypto_tfm *) tfm,
3165 CRYPTO_TFM_RES_BAD_KEY_LEN);
3166 return -EINVAL;
3167 }
3168 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
3169}
3170
3171static int chcr_4106_4309_setauthsize(struct crypto_aead *tfm,
3172 unsigned int authsize)
3173{
3174 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3175
3176 switch (authsize) {
3177 case ICV_8:
3178 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
3179 aeadctx->mayverify = VERIFY_HW;
3180 break;
3181 case ICV_12:
3182 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
3183 aeadctx->mayverify = VERIFY_HW;
3184 break;
3185 case ICV_16:
3186 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3187 aeadctx->mayverify = VERIFY_HW;
3188 break;
3189 default:
3190 crypto_tfm_set_flags((struct crypto_tfm *)tfm,
3191 CRYPTO_TFM_RES_BAD_KEY_LEN);
3192 return -EINVAL;
3193 }
3194 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
3195}
3196
3197static int chcr_ccm_setauthsize(struct crypto_aead *tfm,
3198 unsigned int authsize)
3199{
3200 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3201
3202 switch (authsize) {
3203 case ICV_4:
3204 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1;
3205 aeadctx->mayverify = VERIFY_HW;
3206 break;
3207 case ICV_6:
3208 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL2;
3209 aeadctx->mayverify = VERIFY_HW;
3210 break;
3211 case ICV_8:
3212 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2;
3213 aeadctx->mayverify = VERIFY_HW;
3214 break;
3215 case ICV_10:
3216 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_TRUNC_RFC4366;
3217 aeadctx->mayverify = VERIFY_HW;
3218 break;
3219 case ICV_12:
3220 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT;
3221 aeadctx->mayverify = VERIFY_HW;
3222 break;
3223 case ICV_14:
3224 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3;
3225 aeadctx->mayverify = VERIFY_HW;
3226 break;
3227 case ICV_16:
3228 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC;
3229 aeadctx->mayverify = VERIFY_HW;
3230 break;
3231 default:
3232 crypto_tfm_set_flags((struct crypto_tfm *)tfm,
3233 CRYPTO_TFM_RES_BAD_KEY_LEN);
3234 return -EINVAL;
3235 }
3236 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize);
3237}
3238
3239static int chcr_ccm_common_setkey(struct crypto_aead *aead,
3240 const u8 *key,
3241 unsigned int keylen)
3242{
3243 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead));
3244 unsigned char ck_size, mk_size;
3245 int key_ctx_size = 0;
3246
3247 key_ctx_size = sizeof(struct _key_ctx) + roundup(keylen, 16) * 2;
3248 if (keylen == AES_KEYSIZE_128) {
3249 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
3250 mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_128;
3251 } else if (keylen == AES_KEYSIZE_192) {
3252 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
3253 mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_192;
3254 } else if (keylen == AES_KEYSIZE_256) {
3255 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
3256 mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256;
3257 } else {
3258 crypto_tfm_set_flags((struct crypto_tfm *)aead,
3259 CRYPTO_TFM_RES_BAD_KEY_LEN);
3260 aeadctx->enckey_len = 0;
3261 return -EINVAL;
3262 }
3263 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, mk_size, 0, 0,
3264 key_ctx_size >> 4);
3265 memcpy(aeadctx->key, key, keylen);
3266 aeadctx->enckey_len = keylen;
3267
3268 return 0;
3269}
3270
3271static int chcr_aead_ccm_setkey(struct crypto_aead *aead,
3272 const u8 *key,
3273 unsigned int keylen)
3274{
3275 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead));
3276 int error;
3277
3278 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3279 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead) &
3280 CRYPTO_TFM_REQ_MASK);
3281 error = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3282 crypto_aead_clear_flags(aead, CRYPTO_TFM_RES_MASK);
3283 crypto_aead_set_flags(aead, crypto_aead_get_flags(aeadctx->sw_cipher) &
3284 CRYPTO_TFM_RES_MASK);
3285 if (error)
3286 return error;
3287 return chcr_ccm_common_setkey(aead, key, keylen);
3288}
3289
3290static int chcr_aead_rfc4309_setkey(struct crypto_aead *aead, const u8 *key,
3291 unsigned int keylen)
3292{
3293 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead));
3294 int error;
3295
3296 if (keylen < 3) {
3297 crypto_tfm_set_flags((struct crypto_tfm *)aead,
3298 CRYPTO_TFM_RES_BAD_KEY_LEN);
3299 aeadctx->enckey_len = 0;
3300 return -EINVAL;
3301 }
3302 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3303 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead) &
3304 CRYPTO_TFM_REQ_MASK);
3305 error = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3306 crypto_aead_clear_flags(aead, CRYPTO_TFM_RES_MASK);
3307 crypto_aead_set_flags(aead, crypto_aead_get_flags(aeadctx->sw_cipher) &
3308 CRYPTO_TFM_RES_MASK);
3309 if (error)
3310 return error;
3311 keylen -= 3;
3312 memcpy(aeadctx->salt, key + keylen, 3);
3313 return chcr_ccm_common_setkey(aead, key, keylen);
3314}
3315
3316static int chcr_gcm_setkey(struct crypto_aead *aead, const u8 *key,
3317 unsigned int keylen)
3318{
3319 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead));
3320 struct chcr_gcm_ctx *gctx = GCM_CTX(aeadctx);
3321 struct crypto_cipher *cipher;
3322 unsigned int ck_size;
3323 int ret = 0, key_ctx_size = 0;
3324
3325 aeadctx->enckey_len = 0;
3326 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3327 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead)
3328 & CRYPTO_TFM_REQ_MASK);
3329 ret = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3330 crypto_aead_clear_flags(aead, CRYPTO_TFM_RES_MASK);
3331 crypto_aead_set_flags(aead, crypto_aead_get_flags(aeadctx->sw_cipher) &
3332 CRYPTO_TFM_RES_MASK);
3333 if (ret)
3334 goto out;
3335
3336 if (get_aead_subtype(aead) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106 &&
3337 keylen > 3) {
3338 keylen -= 4; /* nonce/salt is present in the last 4 bytes */
3339 memcpy(aeadctx->salt, key + keylen, 4);
3340 }
3341 if (keylen == AES_KEYSIZE_128) {
3342 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
3343 } else if (keylen == AES_KEYSIZE_192) {
3344 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
3345 } else if (keylen == AES_KEYSIZE_256) {
3346 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
3347 } else {
3348 crypto_tfm_set_flags((struct crypto_tfm *)aead,
3349 CRYPTO_TFM_RES_BAD_KEY_LEN);
3350 pr_err("GCM: Invalid key length %d\n", keylen);
3351 ret = -EINVAL;
3352 goto out;
3353 }
3354
3355 memcpy(aeadctx->key, key, keylen);
3356 aeadctx->enckey_len = keylen;
3357 key_ctx_size = sizeof(struct _key_ctx) + roundup(keylen, 16) +
3358 AEAD_H_SIZE;
3359 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size,
3360 CHCR_KEYCTX_MAC_KEY_SIZE_128,
3361 0, 0,
3362 key_ctx_size >> 4);
3363 /* Calculate the H = CIPH(K, 0 repeated 16 times).
3364 * It will go in key context
3365 */
3366 cipher = crypto_alloc_cipher("aes-generic", 0, 0);
3367 if (IS_ERR(cipher)) {
3368 aeadctx->enckey_len = 0;
3369 ret = -ENOMEM;
3370 goto out;
3371 }
3372
3373 ret = crypto_cipher_setkey(cipher, key, keylen);
3374 if (ret) {
3375 aeadctx->enckey_len = 0;
3376 goto out1;
3377 }
3378 memset(gctx->ghash_h, 0, AEAD_H_SIZE);
3379 crypto_cipher_encrypt_one(cipher, gctx->ghash_h, gctx->ghash_h);
3380
3381out1:
3382 crypto_free_cipher(cipher);
3383out:
3384 return ret;
3385}
3386
3387static int chcr_authenc_setkey(struct crypto_aead *authenc, const u8 *key,
3388 unsigned int keylen)
3389{
3390 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(authenc));
3391 struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx);
3392 /* it contains auth and cipher key both*/
3393 struct crypto_authenc_keys keys;
3394 unsigned int bs, subtype;
3395 unsigned int max_authsize = crypto_aead_alg(authenc)->maxauthsize;
3396 int err = 0, i, key_ctx_len = 0;
3397 unsigned char ck_size = 0;
3398 unsigned char pad[CHCR_HASH_MAX_BLOCK_SIZE_128] = { 0 };
3399 struct crypto_shash *base_hash = ERR_PTR(-EINVAL);
3400 struct algo_param param;
3401 int align;
3402 u8 *o_ptr = NULL;
3403
3404 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3405 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(authenc)
3406 & CRYPTO_TFM_REQ_MASK);
3407 err = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3408 crypto_aead_clear_flags(authenc, CRYPTO_TFM_RES_MASK);
3409 crypto_aead_set_flags(authenc, crypto_aead_get_flags(aeadctx->sw_cipher)
3410 & CRYPTO_TFM_RES_MASK);
3411 if (err)
3412 goto out;
3413
3414 if (crypto_authenc_extractkeys(&keys, key, keylen) != 0) {
3415 crypto_aead_set_flags(authenc, CRYPTO_TFM_RES_BAD_KEY_LEN);
3416 goto out;
3417 }
3418
3419 if (get_alg_config(¶m, max_authsize)) {
3420 pr_err("chcr : Unsupported digest size\n");
3421 goto out;
3422 }
3423 subtype = get_aead_subtype(authenc);
3424 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
3425 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
3426 if (keys.enckeylen < CTR_RFC3686_NONCE_SIZE)
3427 goto out;
3428 memcpy(aeadctx->nonce, keys.enckey + (keys.enckeylen
3429 - CTR_RFC3686_NONCE_SIZE), CTR_RFC3686_NONCE_SIZE);
3430 keys.enckeylen -= CTR_RFC3686_NONCE_SIZE;
3431 }
3432 if (keys.enckeylen == AES_KEYSIZE_128) {
3433 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
3434 } else if (keys.enckeylen == AES_KEYSIZE_192) {
3435 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
3436 } else if (keys.enckeylen == AES_KEYSIZE_256) {
3437 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
3438 } else {
3439 pr_err("chcr : Unsupported cipher key\n");
3440 goto out;
3441 }
3442
3443 /* Copy only encryption key. We use authkey to generate h(ipad) and
3444 * h(opad) so authkey is not needed again. authkeylen size have the
3445 * size of the hash digest size.
3446 */
3447 memcpy(aeadctx->key, keys.enckey, keys.enckeylen);
3448 aeadctx->enckey_len = keys.enckeylen;
3449 if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_SHA ||
3450 subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL) {
3451
3452 get_aes_decrypt_key(actx->dec_rrkey, aeadctx->key,
3453 aeadctx->enckey_len << 3);
3454 }
3455 base_hash = chcr_alloc_shash(max_authsize);
3456 if (IS_ERR(base_hash)) {
3457 pr_err("chcr : Base driver cannot be loaded\n");
3458 aeadctx->enckey_len = 0;
3459 memzero_explicit(&keys, sizeof(keys));
3460 return -EINVAL;
3461 }
3462 {
3463 SHASH_DESC_ON_STACK(shash, base_hash);
3464 shash->tfm = base_hash;
3465 shash->flags = crypto_shash_get_flags(base_hash);
3466 bs = crypto_shash_blocksize(base_hash);
3467 align = KEYCTX_ALIGN_PAD(max_authsize);
3468 o_ptr = actx->h_iopad + param.result_size + align;
3469
3470 if (keys.authkeylen > bs) {
3471 err = crypto_shash_digest(shash, keys.authkey,
3472 keys.authkeylen,
3473 o_ptr);
3474 if (err) {
3475 pr_err("chcr : Base driver cannot be loaded\n");
3476 goto out;
3477 }
3478 keys.authkeylen = max_authsize;
3479 } else
3480 memcpy(o_ptr, keys.authkey, keys.authkeylen);
3481
3482 /* Compute the ipad-digest*/
3483 memset(pad + keys.authkeylen, 0, bs - keys.authkeylen);
3484 memcpy(pad, o_ptr, keys.authkeylen);
3485 for (i = 0; i < bs >> 2; i++)
3486 *((unsigned int *)pad + i) ^= IPAD_DATA;
3487
3488 if (chcr_compute_partial_hash(shash, pad, actx->h_iopad,
3489 max_authsize))
3490 goto out;
3491 /* Compute the opad-digest */
3492 memset(pad + keys.authkeylen, 0, bs - keys.authkeylen);
3493 memcpy(pad, o_ptr, keys.authkeylen);
3494 for (i = 0; i < bs >> 2; i++)
3495 *((unsigned int *)pad + i) ^= OPAD_DATA;
3496
3497 if (chcr_compute_partial_hash(shash, pad, o_ptr, max_authsize))
3498 goto out;
3499
3500 /* convert the ipad and opad digest to network order */
3501 chcr_change_order(actx->h_iopad, param.result_size);
3502 chcr_change_order(o_ptr, param.result_size);
3503 key_ctx_len = sizeof(struct _key_ctx) +
3504 roundup(keys.enckeylen, 16) +
3505 (param.result_size + align) * 2;
3506 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, param.mk_size,
3507 0, 1, key_ctx_len >> 4);
3508 actx->auth_mode = param.auth_mode;
3509 chcr_free_shash(base_hash);
3510
3511 memzero_explicit(&keys, sizeof(keys));
3512 return 0;
3513 }
3514out:
3515 aeadctx->enckey_len = 0;
3516 memzero_explicit(&keys, sizeof(keys));
3517 if (!IS_ERR(base_hash))
3518 chcr_free_shash(base_hash);
3519 return -EINVAL;
3520}
3521
3522static int chcr_aead_digest_null_setkey(struct crypto_aead *authenc,
3523 const u8 *key, unsigned int keylen)
3524{
3525 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(authenc));
3526 struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx);
3527 struct crypto_authenc_keys keys;
3528 int err;
3529 /* it contains auth and cipher key both*/
3530 unsigned int subtype;
3531 int key_ctx_len = 0;
3532 unsigned char ck_size = 0;
3533
3534 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK);
3535 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(authenc)
3536 & CRYPTO_TFM_REQ_MASK);
3537 err = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen);
3538 crypto_aead_clear_flags(authenc, CRYPTO_TFM_RES_MASK);
3539 crypto_aead_set_flags(authenc, crypto_aead_get_flags(aeadctx->sw_cipher)
3540 & CRYPTO_TFM_RES_MASK);
3541 if (err)
3542 goto out;
3543
3544 if (crypto_authenc_extractkeys(&keys, key, keylen) != 0) {
3545 crypto_aead_set_flags(authenc, CRYPTO_TFM_RES_BAD_KEY_LEN);
3546 goto out;
3547 }
3548 subtype = get_aead_subtype(authenc);
3549 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA ||
3550 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) {
3551 if (keys.enckeylen < CTR_RFC3686_NONCE_SIZE)
3552 goto out;
3553 memcpy(aeadctx->nonce, keys.enckey + (keys.enckeylen
3554 - CTR_RFC3686_NONCE_SIZE), CTR_RFC3686_NONCE_SIZE);
3555 keys.enckeylen -= CTR_RFC3686_NONCE_SIZE;
3556 }
3557 if (keys.enckeylen == AES_KEYSIZE_128) {
3558 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128;
3559 } else if (keys.enckeylen == AES_KEYSIZE_192) {
3560 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192;
3561 } else if (keys.enckeylen == AES_KEYSIZE_256) {
3562 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256;
3563 } else {
3564 pr_err("chcr : Unsupported cipher key %d\n", keys.enckeylen);
3565 goto out;
3566 }
3567 memcpy(aeadctx->key, keys.enckey, keys.enckeylen);
3568 aeadctx->enckey_len = keys.enckeylen;
3569 if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_SHA ||
3570 subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL) {
3571 get_aes_decrypt_key(actx->dec_rrkey, aeadctx->key,
3572 aeadctx->enckey_len << 3);
3573 }
3574 key_ctx_len = sizeof(struct _key_ctx) + roundup(keys.enckeylen, 16);
3575
3576 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY, 0,
3577 0, key_ctx_len >> 4);
3578 actx->auth_mode = CHCR_SCMD_AUTH_MODE_NOP;
3579 memzero_explicit(&keys, sizeof(keys));
3580 return 0;
3581out:
3582 aeadctx->enckey_len = 0;
3583 memzero_explicit(&keys, sizeof(keys));
3584 return -EINVAL;
3585}
3586
3587static int chcr_aead_op(struct aead_request *req,
3588 unsigned short op_type,
3589 int size,
3590 create_wr_t create_wr_fn)
3591{
3592 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
3593 struct uld_ctx *u_ctx;
3594 struct sk_buff *skb;
3595
3596 if (!a_ctx(tfm)->dev) {
3597 pr_err("chcr : %s : No crypto device.\n", __func__);
3598 return -ENXIO;
3599 }
3600 u_ctx = ULD_CTX(a_ctx(tfm));
3601 if (cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0],
3602 a_ctx(tfm)->tx_qidx)) {
3603 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
3604 return -EBUSY;
3605 }
3606
3607 /* Form a WR from req */
3608 skb = create_wr_fn(req, u_ctx->lldi.rxq_ids[a_ctx(tfm)->rx_qidx], size,
3609 op_type);
3610
3611 if (IS_ERR(skb) || !skb)
3612 return PTR_ERR(skb);
3613
3614 skb->dev = u_ctx->lldi.ports[0];
3615 set_wr_txq(skb, CPL_PRIORITY_DATA, a_ctx(tfm)->tx_qidx);
3616 chcr_send_wr(skb);
3617 return -EINPROGRESS;
3618}
3619
3620static int chcr_aead_encrypt(struct aead_request *req)
3621{
3622 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
3623 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
3624
3625 reqctx->verify = VERIFY_HW;
3626
3627 switch (get_aead_subtype(tfm)) {
3628 case CRYPTO_ALG_SUB_TYPE_CTR_SHA:
3629 case CRYPTO_ALG_SUB_TYPE_CBC_SHA:
3630 case CRYPTO_ALG_SUB_TYPE_CBC_NULL:
3631 case CRYPTO_ALG_SUB_TYPE_CTR_NULL:
3632 return chcr_aead_op(req, CHCR_ENCRYPT_OP, 0,
3633 create_authenc_wr);
3634 case CRYPTO_ALG_SUB_TYPE_AEAD_CCM:
3635 case CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309:
3636 return chcr_aead_op(req, CHCR_ENCRYPT_OP, 0,
3637 create_aead_ccm_wr);
3638 default:
3639 return chcr_aead_op(req, CHCR_ENCRYPT_OP, 0,
3640 create_gcm_wr);
3641 }
3642}
3643
3644static int chcr_aead_decrypt(struct aead_request *req)
3645{
3646 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
3647 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm));
3648 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req);
3649 int size;
3650
3651 if (aeadctx->mayverify == VERIFY_SW) {
3652 size = crypto_aead_maxauthsize(tfm);
3653 reqctx->verify = VERIFY_SW;
3654 } else {
3655 size = 0;
3656 reqctx->verify = VERIFY_HW;
3657 }
3658
3659 switch (get_aead_subtype(tfm)) {
3660 case CRYPTO_ALG_SUB_TYPE_CBC_SHA:
3661 case CRYPTO_ALG_SUB_TYPE_CTR_SHA:
3662 case CRYPTO_ALG_SUB_TYPE_CBC_NULL:
3663 case CRYPTO_ALG_SUB_TYPE_CTR_NULL:
3664 return chcr_aead_op(req, CHCR_DECRYPT_OP, size,
3665 create_authenc_wr);
3666 case CRYPTO_ALG_SUB_TYPE_AEAD_CCM:
3667 case CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309:
3668 return chcr_aead_op(req, CHCR_DECRYPT_OP, size,
3669 create_aead_ccm_wr);
3670 default:
3671 return chcr_aead_op(req, CHCR_DECRYPT_OP, size,
3672 create_gcm_wr);
3673 }
3674}
3675
3676static struct chcr_alg_template driver_algs[] = {
3677 /* AES-CBC */
3678 {
3679 .type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_SUB_TYPE_CBC,
3680 .is_registered = 0,
3681 .alg.crypto = {
3682 .cra_name = "cbc(aes)",
3683 .cra_driver_name = "cbc-aes-chcr",
3684 .cra_blocksize = AES_BLOCK_SIZE,
3685 .cra_init = chcr_cra_init,
3686 .cra_exit = chcr_cra_exit,
3687 .cra_u.ablkcipher = {
3688 .min_keysize = AES_MIN_KEY_SIZE,
3689 .max_keysize = AES_MAX_KEY_SIZE,
3690 .ivsize = AES_BLOCK_SIZE,
3691 .setkey = chcr_aes_cbc_setkey,
3692 .encrypt = chcr_aes_encrypt,
3693 .decrypt = chcr_aes_decrypt,
3694 }
3695 }
3696 },
3697 {
3698 .type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_SUB_TYPE_XTS,
3699 .is_registered = 0,
3700 .alg.crypto = {
3701 .cra_name = "xts(aes)",
3702 .cra_driver_name = "xts-aes-chcr",
3703 .cra_blocksize = AES_BLOCK_SIZE,
3704 .cra_init = chcr_cra_init,
3705 .cra_exit = NULL,
3706 .cra_u .ablkcipher = {
3707 .min_keysize = 2 * AES_MIN_KEY_SIZE,
3708 .max_keysize = 2 * AES_MAX_KEY_SIZE,
3709 .ivsize = AES_BLOCK_SIZE,
3710 .setkey = chcr_aes_xts_setkey,
3711 .encrypt = chcr_aes_encrypt,
3712 .decrypt = chcr_aes_decrypt,
3713 }
3714 }
3715 },
3716 {
3717 .type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_SUB_TYPE_CTR,
3718 .is_registered = 0,
3719 .alg.crypto = {
3720 .cra_name = "ctr(aes)",
3721 .cra_driver_name = "ctr-aes-chcr",
3722 .cra_blocksize = 1,
3723 .cra_init = chcr_cra_init,
3724 .cra_exit = chcr_cra_exit,
3725 .cra_u.ablkcipher = {
3726 .min_keysize = AES_MIN_KEY_SIZE,
3727 .max_keysize = AES_MAX_KEY_SIZE,
3728 .ivsize = AES_BLOCK_SIZE,
3729 .setkey = chcr_aes_ctr_setkey,
3730 .encrypt = chcr_aes_encrypt,
3731 .decrypt = chcr_aes_decrypt,
3732 }
3733 }
3734 },
3735 {
3736 .type = CRYPTO_ALG_TYPE_ABLKCIPHER |
3737 CRYPTO_ALG_SUB_TYPE_CTR_RFC3686,
3738 .is_registered = 0,
3739 .alg.crypto = {
3740 .cra_name = "rfc3686(ctr(aes))",
3741 .cra_driver_name = "rfc3686-ctr-aes-chcr",
3742 .cra_blocksize = 1,
3743 .cra_init = chcr_rfc3686_init,
3744 .cra_exit = chcr_cra_exit,
3745 .cra_u.ablkcipher = {
3746 .min_keysize = AES_MIN_KEY_SIZE +
3747 CTR_RFC3686_NONCE_SIZE,
3748 .max_keysize = AES_MAX_KEY_SIZE +
3749 CTR_RFC3686_NONCE_SIZE,
3750 .ivsize = CTR_RFC3686_IV_SIZE,
3751 .setkey = chcr_aes_rfc3686_setkey,
3752 .encrypt = chcr_aes_encrypt,
3753 .decrypt = chcr_aes_decrypt,
3754 .geniv = "seqiv",
3755 }
3756 }
3757 },
3758 /* SHA */
3759 {
3760 .type = CRYPTO_ALG_TYPE_AHASH,
3761 .is_registered = 0,
3762 .alg.hash = {
3763 .halg.digestsize = SHA1_DIGEST_SIZE,
3764 .halg.base = {
3765 .cra_name = "sha1",
3766 .cra_driver_name = "sha1-chcr",
3767 .cra_blocksize = SHA1_BLOCK_SIZE,
3768 }
3769 }
3770 },
3771 {
3772 .type = CRYPTO_ALG_TYPE_AHASH,
3773 .is_registered = 0,
3774 .alg.hash = {
3775 .halg.digestsize = SHA256_DIGEST_SIZE,
3776 .halg.base = {
3777 .cra_name = "sha256",
3778 .cra_driver_name = "sha256-chcr",
3779 .cra_blocksize = SHA256_BLOCK_SIZE,
3780 }
3781 }
3782 },
3783 {
3784 .type = CRYPTO_ALG_TYPE_AHASH,
3785 .is_registered = 0,
3786 .alg.hash = {
3787 .halg.digestsize = SHA224_DIGEST_SIZE,
3788 .halg.base = {
3789 .cra_name = "sha224",
3790 .cra_driver_name = "sha224-chcr",
3791 .cra_blocksize = SHA224_BLOCK_SIZE,
3792 }
3793 }
3794 },
3795 {
3796 .type = CRYPTO_ALG_TYPE_AHASH,
3797 .is_registered = 0,
3798 .alg.hash = {
3799 .halg.digestsize = SHA384_DIGEST_SIZE,
3800 .halg.base = {
3801 .cra_name = "sha384",
3802 .cra_driver_name = "sha384-chcr",
3803 .cra_blocksize = SHA384_BLOCK_SIZE,
3804 }
3805 }
3806 },
3807 {
3808 .type = CRYPTO_ALG_TYPE_AHASH,
3809 .is_registered = 0,
3810 .alg.hash = {
3811 .halg.digestsize = SHA512_DIGEST_SIZE,
3812 .halg.base = {
3813 .cra_name = "sha512",
3814 .cra_driver_name = "sha512-chcr",
3815 .cra_blocksize = SHA512_BLOCK_SIZE,
3816 }
3817 }
3818 },
3819 /* HMAC */
3820 {
3821 .type = CRYPTO_ALG_TYPE_HMAC,
3822 .is_registered = 0,
3823 .alg.hash = {
3824 .halg.digestsize = SHA1_DIGEST_SIZE,
3825 .halg.base = {
3826 .cra_name = "hmac(sha1)",
3827 .cra_driver_name = "hmac-sha1-chcr",
3828 .cra_blocksize = SHA1_BLOCK_SIZE,
3829 }
3830 }
3831 },
3832 {
3833 .type = CRYPTO_ALG_TYPE_HMAC,
3834 .is_registered = 0,
3835 .alg.hash = {
3836 .halg.digestsize = SHA224_DIGEST_SIZE,
3837 .halg.base = {
3838 .cra_name = "hmac(sha224)",
3839 .cra_driver_name = "hmac-sha224-chcr",
3840 .cra_blocksize = SHA224_BLOCK_SIZE,
3841 }
3842 }
3843 },
3844 {
3845 .type = CRYPTO_ALG_TYPE_HMAC,
3846 .is_registered = 0,
3847 .alg.hash = {
3848 .halg.digestsize = SHA256_DIGEST_SIZE,
3849 .halg.base = {
3850 .cra_name = "hmac(sha256)",
3851 .cra_driver_name = "hmac-sha256-chcr",
3852 .cra_blocksize = SHA256_BLOCK_SIZE,
3853 }
3854 }
3855 },
3856 {
3857 .type = CRYPTO_ALG_TYPE_HMAC,
3858 .is_registered = 0,
3859 .alg.hash = {
3860 .halg.digestsize = SHA384_DIGEST_SIZE,
3861 .halg.base = {
3862 .cra_name = "hmac(sha384)",
3863 .cra_driver_name = "hmac-sha384-chcr",
3864 .cra_blocksize = SHA384_BLOCK_SIZE,
3865 }
3866 }
3867 },
3868 {
3869 .type = CRYPTO_ALG_TYPE_HMAC,
3870 .is_registered = 0,
3871 .alg.hash = {
3872 .halg.digestsize = SHA512_DIGEST_SIZE,
3873 .halg.base = {
3874 .cra_name = "hmac(sha512)",
3875 .cra_driver_name = "hmac-sha512-chcr",
3876 .cra_blocksize = SHA512_BLOCK_SIZE,
3877 }
3878 }
3879 },
3880 /* Add AEAD Algorithms */
3881 {
3882 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_GCM,
3883 .is_registered = 0,
3884 .alg.aead = {
3885 .base = {
3886 .cra_name = "gcm(aes)",
3887 .cra_driver_name = "gcm-aes-chcr",
3888 .cra_blocksize = 1,
3889 .cra_priority = CHCR_AEAD_PRIORITY,
3890 .cra_ctxsize = sizeof(struct chcr_context) +
3891 sizeof(struct chcr_aead_ctx) +
3892 sizeof(struct chcr_gcm_ctx),
3893 },
3894 .ivsize = GCM_AES_IV_SIZE,
3895 .maxauthsize = GHASH_DIGEST_SIZE,
3896 .setkey = chcr_gcm_setkey,
3897 .setauthsize = chcr_gcm_setauthsize,
3898 }
3899 },
3900 {
3901 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106,
3902 .is_registered = 0,
3903 .alg.aead = {
3904 .base = {
3905 .cra_name = "rfc4106(gcm(aes))",
3906 .cra_driver_name = "rfc4106-gcm-aes-chcr",
3907 .cra_blocksize = 1,
3908 .cra_priority = CHCR_AEAD_PRIORITY + 1,
3909 .cra_ctxsize = sizeof(struct chcr_context) +
3910 sizeof(struct chcr_aead_ctx) +
3911 sizeof(struct chcr_gcm_ctx),
3912
3913 },
3914 .ivsize = GCM_RFC4106_IV_SIZE,
3915 .maxauthsize = GHASH_DIGEST_SIZE,
3916 .setkey = chcr_gcm_setkey,
3917 .setauthsize = chcr_4106_4309_setauthsize,
3918 }
3919 },
3920 {
3921 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_CCM,
3922 .is_registered = 0,
3923 .alg.aead = {
3924 .base = {
3925 .cra_name = "ccm(aes)",
3926 .cra_driver_name = "ccm-aes-chcr",
3927 .cra_blocksize = 1,
3928 .cra_priority = CHCR_AEAD_PRIORITY,
3929 .cra_ctxsize = sizeof(struct chcr_context) +
3930 sizeof(struct chcr_aead_ctx),
3931
3932 },
3933 .ivsize = AES_BLOCK_SIZE,
3934 .maxauthsize = GHASH_DIGEST_SIZE,
3935 .setkey = chcr_aead_ccm_setkey,
3936 .setauthsize = chcr_ccm_setauthsize,
3937 }
3938 },
3939 {
3940 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309,
3941 .is_registered = 0,
3942 .alg.aead = {
3943 .base = {
3944 .cra_name = "rfc4309(ccm(aes))",
3945 .cra_driver_name = "rfc4309-ccm-aes-chcr",
3946 .cra_blocksize = 1,
3947 .cra_priority = CHCR_AEAD_PRIORITY + 1,
3948 .cra_ctxsize = sizeof(struct chcr_context) +
3949 sizeof(struct chcr_aead_ctx),
3950
3951 },
3952 .ivsize = 8,
3953 .maxauthsize = GHASH_DIGEST_SIZE,
3954 .setkey = chcr_aead_rfc4309_setkey,
3955 .setauthsize = chcr_4106_4309_setauthsize,
3956 }
3957 },
3958 {
3959 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
3960 .is_registered = 0,
3961 .alg.aead = {
3962 .base = {
3963 .cra_name = "authenc(hmac(sha1),cbc(aes))",
3964 .cra_driver_name =
3965 "authenc-hmac-sha1-cbc-aes-chcr",
3966 .cra_blocksize = AES_BLOCK_SIZE,
3967 .cra_priority = CHCR_AEAD_PRIORITY,
3968 .cra_ctxsize = sizeof(struct chcr_context) +
3969 sizeof(struct chcr_aead_ctx) +
3970 sizeof(struct chcr_authenc_ctx),
3971
3972 },
3973 .ivsize = AES_BLOCK_SIZE,
3974 .maxauthsize = SHA1_DIGEST_SIZE,
3975 .setkey = chcr_authenc_setkey,
3976 .setauthsize = chcr_authenc_setauthsize,
3977 }
3978 },
3979 {
3980 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
3981 .is_registered = 0,
3982 .alg.aead = {
3983 .base = {
3984
3985 .cra_name = "authenc(hmac(sha256),cbc(aes))",
3986 .cra_driver_name =
3987 "authenc-hmac-sha256-cbc-aes-chcr",
3988 .cra_blocksize = AES_BLOCK_SIZE,
3989 .cra_priority = CHCR_AEAD_PRIORITY,
3990 .cra_ctxsize = sizeof(struct chcr_context) +
3991 sizeof(struct chcr_aead_ctx) +
3992 sizeof(struct chcr_authenc_ctx),
3993
3994 },
3995 .ivsize = AES_BLOCK_SIZE,
3996 .maxauthsize = SHA256_DIGEST_SIZE,
3997 .setkey = chcr_authenc_setkey,
3998 .setauthsize = chcr_authenc_setauthsize,
3999 }
4000 },
4001 {
4002 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
4003 .is_registered = 0,
4004 .alg.aead = {
4005 .base = {
4006 .cra_name = "authenc(hmac(sha224),cbc(aes))",
4007 .cra_driver_name =
4008 "authenc-hmac-sha224-cbc-aes-chcr",
4009 .cra_blocksize = AES_BLOCK_SIZE,
4010 .cra_priority = CHCR_AEAD_PRIORITY,
4011 .cra_ctxsize = sizeof(struct chcr_context) +
4012 sizeof(struct chcr_aead_ctx) +
4013 sizeof(struct chcr_authenc_ctx),
4014 },
4015 .ivsize = AES_BLOCK_SIZE,
4016 .maxauthsize = SHA224_DIGEST_SIZE,
4017 .setkey = chcr_authenc_setkey,
4018 .setauthsize = chcr_authenc_setauthsize,
4019 }
4020 },
4021 {
4022 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
4023 .is_registered = 0,
4024 .alg.aead = {
4025 .base = {
4026 .cra_name = "authenc(hmac(sha384),cbc(aes))",
4027 .cra_driver_name =
4028 "authenc-hmac-sha384-cbc-aes-chcr",
4029 .cra_blocksize = AES_BLOCK_SIZE,
4030 .cra_priority = CHCR_AEAD_PRIORITY,
4031 .cra_ctxsize = sizeof(struct chcr_context) +
4032 sizeof(struct chcr_aead_ctx) +
4033 sizeof(struct chcr_authenc_ctx),
4034
4035 },
4036 .ivsize = AES_BLOCK_SIZE,
4037 .maxauthsize = SHA384_DIGEST_SIZE,
4038 .setkey = chcr_authenc_setkey,
4039 .setauthsize = chcr_authenc_setauthsize,
4040 }
4041 },
4042 {
4043 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA,
4044 .is_registered = 0,
4045 .alg.aead = {
4046 .base = {
4047 .cra_name = "authenc(hmac(sha512),cbc(aes))",
4048 .cra_driver_name =
4049 "authenc-hmac-sha512-cbc-aes-chcr",
4050 .cra_blocksize = AES_BLOCK_SIZE,
4051 .cra_priority = CHCR_AEAD_PRIORITY,
4052 .cra_ctxsize = sizeof(struct chcr_context) +
4053 sizeof(struct chcr_aead_ctx) +
4054 sizeof(struct chcr_authenc_ctx),
4055
4056 },
4057 .ivsize = AES_BLOCK_SIZE,
4058 .maxauthsize = SHA512_DIGEST_SIZE,
4059 .setkey = chcr_authenc_setkey,
4060 .setauthsize = chcr_authenc_setauthsize,
4061 }
4062 },
4063 {
4064 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_NULL,
4065 .is_registered = 0,
4066 .alg.aead = {
4067 .base = {
4068 .cra_name = "authenc(digest_null,cbc(aes))",
4069 .cra_driver_name =
4070 "authenc-digest_null-cbc-aes-chcr",
4071 .cra_blocksize = AES_BLOCK_SIZE,
4072 .cra_priority = CHCR_AEAD_PRIORITY,
4073 .cra_ctxsize = sizeof(struct chcr_context) +
4074 sizeof(struct chcr_aead_ctx) +
4075 sizeof(struct chcr_authenc_ctx),
4076
4077 },
4078 .ivsize = AES_BLOCK_SIZE,
4079 .maxauthsize = 0,
4080 .setkey = chcr_aead_digest_null_setkey,
4081 .setauthsize = chcr_authenc_null_setauthsize,
4082 }
4083 },
4084 {
4085 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4086 .is_registered = 0,
4087 .alg.aead = {
4088 .base = {
4089 .cra_name = "authenc(hmac(sha1),rfc3686(ctr(aes)))",
4090 .cra_driver_name =
4091 "authenc-hmac-sha1-rfc3686-ctr-aes-chcr",
4092 .cra_blocksize = 1,
4093 .cra_priority = CHCR_AEAD_PRIORITY,
4094 .cra_ctxsize = sizeof(struct chcr_context) +
4095 sizeof(struct chcr_aead_ctx) +
4096 sizeof(struct chcr_authenc_ctx),
4097
4098 },
4099 .ivsize = CTR_RFC3686_IV_SIZE,
4100 .maxauthsize = SHA1_DIGEST_SIZE,
4101 .setkey = chcr_authenc_setkey,
4102 .setauthsize = chcr_authenc_setauthsize,
4103 }
4104 },
4105 {
4106 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4107 .is_registered = 0,
4108 .alg.aead = {
4109 .base = {
4110
4111 .cra_name = "authenc(hmac(sha256),rfc3686(ctr(aes)))",
4112 .cra_driver_name =
4113 "authenc-hmac-sha256-rfc3686-ctr-aes-chcr",
4114 .cra_blocksize = 1,
4115 .cra_priority = CHCR_AEAD_PRIORITY,
4116 .cra_ctxsize = sizeof(struct chcr_context) +
4117 sizeof(struct chcr_aead_ctx) +
4118 sizeof(struct chcr_authenc_ctx),
4119
4120 },
4121 .ivsize = CTR_RFC3686_IV_SIZE,
4122 .maxauthsize = SHA256_DIGEST_SIZE,
4123 .setkey = chcr_authenc_setkey,
4124 .setauthsize = chcr_authenc_setauthsize,
4125 }
4126 },
4127 {
4128 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4129 .is_registered = 0,
4130 .alg.aead = {
4131 .base = {
4132 .cra_name = "authenc(hmac(sha224),rfc3686(ctr(aes)))",
4133 .cra_driver_name =
4134 "authenc-hmac-sha224-rfc3686-ctr-aes-chcr",
4135 .cra_blocksize = 1,
4136 .cra_priority = CHCR_AEAD_PRIORITY,
4137 .cra_ctxsize = sizeof(struct chcr_context) +
4138 sizeof(struct chcr_aead_ctx) +
4139 sizeof(struct chcr_authenc_ctx),
4140 },
4141 .ivsize = CTR_RFC3686_IV_SIZE,
4142 .maxauthsize = SHA224_DIGEST_SIZE,
4143 .setkey = chcr_authenc_setkey,
4144 .setauthsize = chcr_authenc_setauthsize,
4145 }
4146 },
4147 {
4148 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4149 .is_registered = 0,
4150 .alg.aead = {
4151 .base = {
4152 .cra_name = "authenc(hmac(sha384),rfc3686(ctr(aes)))",
4153 .cra_driver_name =
4154 "authenc-hmac-sha384-rfc3686-ctr-aes-chcr",
4155 .cra_blocksize = 1,
4156 .cra_priority = CHCR_AEAD_PRIORITY,
4157 .cra_ctxsize = sizeof(struct chcr_context) +
4158 sizeof(struct chcr_aead_ctx) +
4159 sizeof(struct chcr_authenc_ctx),
4160
4161 },
4162 .ivsize = CTR_RFC3686_IV_SIZE,
4163 .maxauthsize = SHA384_DIGEST_SIZE,
4164 .setkey = chcr_authenc_setkey,
4165 .setauthsize = chcr_authenc_setauthsize,
4166 }
4167 },
4168 {
4169 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA,
4170 .is_registered = 0,
4171 .alg.aead = {
4172 .base = {
4173 .cra_name = "authenc(hmac(sha512),rfc3686(ctr(aes)))",
4174 .cra_driver_name =
4175 "authenc-hmac-sha512-rfc3686-ctr-aes-chcr",
4176 .cra_blocksize = 1,
4177 .cra_priority = CHCR_AEAD_PRIORITY,
4178 .cra_ctxsize = sizeof(struct chcr_context) +
4179 sizeof(struct chcr_aead_ctx) +
4180 sizeof(struct chcr_authenc_ctx),
4181
4182 },
4183 .ivsize = CTR_RFC3686_IV_SIZE,
4184 .maxauthsize = SHA512_DIGEST_SIZE,
4185 .setkey = chcr_authenc_setkey,
4186 .setauthsize = chcr_authenc_setauthsize,
4187 }
4188 },
4189 {
4190 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_NULL,
4191 .is_registered = 0,
4192 .alg.aead = {
4193 .base = {
4194 .cra_name = "authenc(digest_null,rfc3686(ctr(aes)))",
4195 .cra_driver_name =
4196 "authenc-digest_null-rfc3686-ctr-aes-chcr",
4197 .cra_blocksize = 1,
4198 .cra_priority = CHCR_AEAD_PRIORITY,
4199 .cra_ctxsize = sizeof(struct chcr_context) +
4200 sizeof(struct chcr_aead_ctx) +
4201 sizeof(struct chcr_authenc_ctx),
4202
4203 },
4204 .ivsize = CTR_RFC3686_IV_SIZE,
4205 .maxauthsize = 0,
4206 .setkey = chcr_aead_digest_null_setkey,
4207 .setauthsize = chcr_authenc_null_setauthsize,
4208 }
4209 },
4210
4211};
4212
4213/*
4214 * chcr_unregister_alg - Deregister crypto algorithms with
4215 * kernel framework.
4216 */
4217static int chcr_unregister_alg(void)
4218{
4219 int i;
4220
4221 for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
4222 switch (driver_algs[i].type & CRYPTO_ALG_TYPE_MASK) {
4223 case CRYPTO_ALG_TYPE_ABLKCIPHER:
4224 if (driver_algs[i].is_registered)
4225 crypto_unregister_alg(
4226 &driver_algs[i].alg.crypto);
4227 break;
4228 case CRYPTO_ALG_TYPE_AEAD:
4229 if (driver_algs[i].is_registered)
4230 crypto_unregister_aead(
4231 &driver_algs[i].alg.aead);
4232 break;
4233 case CRYPTO_ALG_TYPE_AHASH:
4234 if (driver_algs[i].is_registered)
4235 crypto_unregister_ahash(
4236 &driver_algs[i].alg.hash);
4237 break;
4238 }
4239 driver_algs[i].is_registered = 0;
4240 }
4241 return 0;
4242}
4243
4244#define SZ_AHASH_CTX sizeof(struct chcr_context)
4245#define SZ_AHASH_H_CTX (sizeof(struct chcr_context) + sizeof(struct hmac_ctx))
4246#define SZ_AHASH_REQ_CTX sizeof(struct chcr_ahash_req_ctx)
4247#define AHASH_CRA_FLAGS (CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_ASYNC)
4248
4249/*
4250 * chcr_register_alg - Register crypto algorithms with kernel framework.
4251 */
4252static int chcr_register_alg(void)
4253{
4254 struct crypto_alg ai;
4255 struct ahash_alg *a_hash;
4256 int err = 0, i;
4257 char *name = NULL;
4258
4259 for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
4260 if (driver_algs[i].is_registered)
4261 continue;
4262 switch (driver_algs[i].type & CRYPTO_ALG_TYPE_MASK) {
4263 case CRYPTO_ALG_TYPE_ABLKCIPHER:
4264 driver_algs[i].alg.crypto.cra_priority =
4265 CHCR_CRA_PRIORITY;
4266 driver_algs[i].alg.crypto.cra_module = THIS_MODULE;
4267 driver_algs[i].alg.crypto.cra_flags =
4268 CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC |
4269 CRYPTO_ALG_NEED_FALLBACK;
4270 driver_algs[i].alg.crypto.cra_ctxsize =
4271 sizeof(struct chcr_context) +
4272 sizeof(struct ablk_ctx);
4273 driver_algs[i].alg.crypto.cra_alignmask = 0;
4274 driver_algs[i].alg.crypto.cra_type =
4275 &crypto_ablkcipher_type;
4276 err = crypto_register_alg(&driver_algs[i].alg.crypto);
4277 name = driver_algs[i].alg.crypto.cra_driver_name;
4278 break;
4279 case CRYPTO_ALG_TYPE_AEAD:
4280 driver_algs[i].alg.aead.base.cra_flags =
4281 CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC |
4282 CRYPTO_ALG_NEED_FALLBACK;
4283 driver_algs[i].alg.aead.encrypt = chcr_aead_encrypt;
4284 driver_algs[i].alg.aead.decrypt = chcr_aead_decrypt;
4285 driver_algs[i].alg.aead.init = chcr_aead_cra_init;
4286 driver_algs[i].alg.aead.exit = chcr_aead_cra_exit;
4287 driver_algs[i].alg.aead.base.cra_module = THIS_MODULE;
4288 err = crypto_register_aead(&driver_algs[i].alg.aead);
4289 name = driver_algs[i].alg.aead.base.cra_driver_name;
4290 break;
4291 case CRYPTO_ALG_TYPE_AHASH:
4292 a_hash = &driver_algs[i].alg.hash;
4293 a_hash->update = chcr_ahash_update;
4294 a_hash->final = chcr_ahash_final;
4295 a_hash->finup = chcr_ahash_finup;
4296 a_hash->digest = chcr_ahash_digest;
4297 a_hash->export = chcr_ahash_export;
4298 a_hash->import = chcr_ahash_import;
4299 a_hash->halg.statesize = SZ_AHASH_REQ_CTX;
4300 a_hash->halg.base.cra_priority = CHCR_CRA_PRIORITY;
4301 a_hash->halg.base.cra_module = THIS_MODULE;
4302 a_hash->halg.base.cra_flags = AHASH_CRA_FLAGS;
4303 a_hash->halg.base.cra_alignmask = 0;
4304 a_hash->halg.base.cra_exit = NULL;
4305 a_hash->halg.base.cra_type = &crypto_ahash_type;
4306
4307 if (driver_algs[i].type == CRYPTO_ALG_TYPE_HMAC) {
4308 a_hash->halg.base.cra_init = chcr_hmac_cra_init;
4309 a_hash->halg.base.cra_exit = chcr_hmac_cra_exit;
4310 a_hash->init = chcr_hmac_init;
4311 a_hash->setkey = chcr_ahash_setkey;
4312 a_hash->halg.base.cra_ctxsize = SZ_AHASH_H_CTX;
4313 } else {
4314 a_hash->init = chcr_sha_init;
4315 a_hash->halg.base.cra_ctxsize = SZ_AHASH_CTX;
4316 a_hash->halg.base.cra_init = chcr_sha_cra_init;
4317 }
4318 err = crypto_register_ahash(&driver_algs[i].alg.hash);
4319 ai = driver_algs[i].alg.hash.halg.base;
4320 name = ai.cra_driver_name;
4321 break;
4322 }
4323 if (err) {
4324 pr_err("chcr : %s : Algorithm registration failed\n",
4325 name);
4326 goto register_err;
4327 } else {
4328 driver_algs[i].is_registered = 1;
4329 }
4330 }
4331 return 0;
4332
4333register_err:
4334 chcr_unregister_alg();
4335 return err;
4336}
4337
4338/*
4339 * start_crypto - Register the crypto algorithms.
4340 * This should called once when the first device comesup. After this
4341 * kernel will start calling driver APIs for crypto operations.
4342 */
4343int start_crypto(void)
4344{
4345 return chcr_register_alg();
4346}
4347
4348/*
4349 * stop_crypto - Deregister all the crypto algorithms with kernel.
4350 * This should be called once when the last device goes down. After this
4351 * kernel will not call the driver API for crypto operations.
4352 */
4353int stop_crypto(void)
4354{
4355 chcr_unregister_alg();
4356 return 0;
4357}