1 /* 2 * This file is part of the Chelsio T6 Crypto driver for Linux. 3 * 4 * Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved. 5 * 6 * This software is available to you under a choice of one of two 7 * licenses. You may choose to be licensed under the terms of the GNU 8 * General Public License (GPL) Version 2, available from the file 9 * COPYING in the main directory of this source tree, or the 10 * OpenIB.org BSD license below: 11 * 12 * Redistribution and use in source and binary forms, with or 13 * without modification, are permitted provided that the following 14 * conditions are met: 15 * 16 * - Redistributions of source code must retain the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer. 19 * 20 * - Redistributions in binary form must reproduce the above 21 * copyright notice, this list of conditions and the following 22 * disclaimer in the documentation and/or other materials 23 * provided with the distribution. 24 * 25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 32 * SOFTWARE. 33 * 34 * Written and Maintained by: 35 * Manoj Malviya (manojmalviya@chelsio.com) 36 * Atul Gupta (atul.gupta@chelsio.com) 37 * Jitendra Lulla (jlulla@chelsio.com) 38 * Yeshaswi M R Gowda (yeshaswi@chelsio.com) 39 * Harsh Jain (harsh@chelsio.com) 40 */ 41 42 #define pr_fmt(fmt) "chcr:" fmt 43 44 #include <linux/kernel.h> 45 #include <linux/module.h> 46 #include <linux/crypto.h> 47 #include <linux/cryptohash.h> 48 #include <linux/skbuff.h> 49 #include <linux/rtnetlink.h> 50 #include <linux/highmem.h> 51 #include <linux/scatterlist.h> 52 53 #include <crypto/aes.h> 54 #include <crypto/algapi.h> 55 #include <crypto/hash.h> 56 #include <crypto/gcm.h> 57 #include <crypto/sha.h> 58 #include <crypto/authenc.h> 59 #include <crypto/ctr.h> 60 #include <crypto/gf128mul.h> 61 #include <crypto/internal/aead.h> 62 #include <crypto/null.h> 63 #include <crypto/internal/skcipher.h> 64 #include <crypto/aead.h> 65 #include <crypto/scatterwalk.h> 66 #include <crypto/internal/hash.h> 67 68 #include "t4fw_api.h" 69 #include "t4_msg.h" 70 #include "chcr_core.h" 71 #include "chcr_algo.h" 72 #include "chcr_crypto.h" 73 74 #define IV AES_BLOCK_SIZE 75 76 static unsigned int sgl_ent_len[] = { 77 0, 0, 16, 24, 40, 48, 64, 72, 88, 78 96, 112, 120, 136, 144, 160, 168, 184, 79 192, 208, 216, 232, 240, 256, 264, 280, 80 288, 304, 312, 328, 336, 352, 360, 376 81 }; 82 83 static unsigned int dsgl_ent_len[] = { 84 0, 32, 32, 48, 48, 64, 64, 80, 80, 85 112, 112, 128, 128, 144, 144, 160, 160, 86 192, 192, 208, 208, 224, 224, 240, 240, 87 272, 272, 288, 288, 304, 304, 320, 320 88 }; 89 90 static u32 round_constant[11] = { 91 0x01000000, 0x02000000, 0x04000000, 0x08000000, 92 0x10000000, 0x20000000, 0x40000000, 0x80000000, 93 0x1B000000, 0x36000000, 0x6C000000 94 }; 95 96 static int chcr_handle_cipher_resp(struct ablkcipher_request *req, 97 unsigned char *input, int err); 98 99 static inline struct chcr_aead_ctx *AEAD_CTX(struct chcr_context *ctx) 100 { 101 return ctx->crypto_ctx->aeadctx; 102 } 103 104 static inline struct ablk_ctx *ABLK_CTX(struct chcr_context *ctx) 105 { 106 return ctx->crypto_ctx->ablkctx; 107 } 108 109 static inline struct hmac_ctx *HMAC_CTX(struct chcr_context *ctx) 110 { 111 return ctx->crypto_ctx->hmacctx; 112 } 113 114 static inline struct chcr_gcm_ctx *GCM_CTX(struct chcr_aead_ctx *gctx) 115 { 116 return gctx->ctx->gcm; 117 } 118 119 static inline struct chcr_authenc_ctx *AUTHENC_CTX(struct chcr_aead_ctx *gctx) 120 { 121 return gctx->ctx->authenc; 122 } 123 124 static inline struct uld_ctx *ULD_CTX(struct chcr_context *ctx) 125 { 126 return ctx->dev->u_ctx; 127 } 128 129 static inline int is_ofld_imm(const struct sk_buff *skb) 130 { 131 return (skb->len <= SGE_MAX_WR_LEN); 132 } 133 134 static inline void chcr_init_hctx_per_wr(struct chcr_ahash_req_ctx *reqctx) 135 { 136 memset(&reqctx->hctx_wr, 0, sizeof(struct chcr_hctx_per_wr)); 137 } 138 139 static int sg_nents_xlen(struct scatterlist *sg, unsigned int reqlen, 140 unsigned int entlen, 141 unsigned int skip) 142 { 143 int nents = 0; 144 unsigned int less; 145 unsigned int skip_len = 0; 146 147 while (sg && skip) { 148 if (sg_dma_len(sg) <= skip) { 149 skip -= sg_dma_len(sg); 150 skip_len = 0; 151 sg = sg_next(sg); 152 } else { 153 skip_len = skip; 154 skip = 0; 155 } 156 } 157 158 while (sg && reqlen) { 159 less = min(reqlen, sg_dma_len(sg) - skip_len); 160 nents += DIV_ROUND_UP(less, entlen); 161 reqlen -= less; 162 skip_len = 0; 163 sg = sg_next(sg); 164 } 165 return nents; 166 } 167 168 static inline int get_aead_subtype(struct crypto_aead *aead) 169 { 170 struct aead_alg *alg = crypto_aead_alg(aead); 171 struct chcr_alg_template *chcr_crypto_alg = 172 container_of(alg, struct chcr_alg_template, alg.aead); 173 return chcr_crypto_alg->type & CRYPTO_ALG_SUB_TYPE_MASK; 174 } 175 176 void chcr_verify_tag(struct aead_request *req, u8 *input, int *err) 177 { 178 u8 temp[SHA512_DIGEST_SIZE]; 179 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 180 int authsize = crypto_aead_authsize(tfm); 181 struct cpl_fw6_pld *fw6_pld; 182 int cmp = 0; 183 184 fw6_pld = (struct cpl_fw6_pld *)input; 185 if ((get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106) || 186 (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_GCM)) { 187 cmp = crypto_memneq(&fw6_pld->data[2], (fw6_pld + 1), authsize); 188 } else { 189 190 sg_pcopy_to_buffer(req->src, sg_nents(req->src), temp, 191 authsize, req->assoclen + 192 req->cryptlen - authsize); 193 cmp = crypto_memneq(temp, (fw6_pld + 1), authsize); 194 } 195 if (cmp) 196 *err = -EBADMSG; 197 else 198 *err = 0; 199 } 200 201 static 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); 206 207 chcr_aead_common_exit(req); 208 if (reqctx->verify == VERIFY_SW) { 209 chcr_verify_tag(req, input, &err); 210 reqctx->verify = VERIFY_HW; 211 } 212 req->base.complete(&req->base, err); 213 } 214 215 static void get_aes_decrypt_key(unsigned char *dec_key, 216 const unsigned char *key, 217 unsigned int keylength) 218 { 219 u32 temp; 220 u32 w_ring[MAX_NK]; 221 int i, j, k; 222 u8 nr, nk; 223 224 switch (keylength) { 225 case AES_KEYLENGTH_128BIT: 226 nk = KEYLENGTH_4BYTES; 227 nr = NUMBER_OF_ROUNDS_10; 228 break; 229 case AES_KEYLENGTH_192BIT: 230 nk = KEYLENGTH_6BYTES; 231 nr = NUMBER_OF_ROUNDS_12; 232 break; 233 case AES_KEYLENGTH_256BIT: 234 nk = KEYLENGTH_8BYTES; 235 nr = NUMBER_OF_ROUNDS_14; 236 break; 237 default: 238 return; 239 } 240 for (i = 0; i < nk; i++) 241 w_ring[i] = be32_to_cpu(*(u32 *)&key[4 * i]); 242 243 i = 0; 244 temp = w_ring[nk - 1]; 245 while (i + nk < (nr + 1) * 4) { 246 if (!(i % nk)) { 247 /* RotWord(temp) */ 248 temp = (temp << 8) | (temp >> 24); 249 temp = aes_ks_subword(temp); 250 temp ^= round_constant[i / nk]; 251 } else if (nk == 8 && (i % 4 == 0)) { 252 temp = aes_ks_subword(temp); 253 } 254 w_ring[i % nk] ^= temp; 255 temp = w_ring[i % nk]; 256 i++; 257 } 258 i--; 259 for (k = 0, j = i % nk; k < nk; k++) { 260 *((u32 *)dec_key + k) = htonl(w_ring[j]); 261 j--; 262 if (j < 0) 263 j += nk; 264 } 265 } 266 267 static struct crypto_shash *chcr_alloc_shash(unsigned int ds) 268 { 269 struct crypto_shash *base_hash = ERR_PTR(-EINVAL); 270 271 switch (ds) { 272 case SHA1_DIGEST_SIZE: 273 base_hash = crypto_alloc_shash("sha1", 0, 0); 274 break; 275 case SHA224_DIGEST_SIZE: 276 base_hash = crypto_alloc_shash("sha224", 0, 0); 277 break; 278 case SHA256_DIGEST_SIZE: 279 base_hash = crypto_alloc_shash("sha256", 0, 0); 280 break; 281 case SHA384_DIGEST_SIZE: 282 base_hash = crypto_alloc_shash("sha384", 0, 0); 283 break; 284 case SHA512_DIGEST_SIZE: 285 base_hash = crypto_alloc_shash("sha512", 0, 0); 286 break; 287 } 288 289 return base_hash; 290 } 291 292 static int chcr_compute_partial_hash(struct shash_desc *desc, 293 char *iopad, char *result_hash, 294 int digest_size) 295 { 296 struct sha1_state sha1_st; 297 struct sha256_state sha256_st; 298 struct sha512_state sha512_st; 299 int error; 300 301 if (digest_size == SHA1_DIGEST_SIZE) { 302 error = crypto_shash_init(desc) ?: 303 crypto_shash_update(desc, iopad, SHA1_BLOCK_SIZE) ?: 304 crypto_shash_export(desc, (void *)&sha1_st); 305 memcpy(result_hash, sha1_st.state, SHA1_DIGEST_SIZE); 306 } else if (digest_size == SHA224_DIGEST_SIZE) { 307 error = crypto_shash_init(desc) ?: 308 crypto_shash_update(desc, iopad, SHA256_BLOCK_SIZE) ?: 309 crypto_shash_export(desc, (void *)&sha256_st); 310 memcpy(result_hash, sha256_st.state, SHA256_DIGEST_SIZE); 311 312 } else if (digest_size == SHA256_DIGEST_SIZE) { 313 error = crypto_shash_init(desc) ?: 314 crypto_shash_update(desc, iopad, SHA256_BLOCK_SIZE) ?: 315 crypto_shash_export(desc, (void *)&sha256_st); 316 memcpy(result_hash, sha256_st.state, SHA256_DIGEST_SIZE); 317 318 } else if (digest_size == SHA384_DIGEST_SIZE) { 319 error = crypto_shash_init(desc) ?: 320 crypto_shash_update(desc, iopad, SHA512_BLOCK_SIZE) ?: 321 crypto_shash_export(desc, (void *)&sha512_st); 322 memcpy(result_hash, sha512_st.state, SHA512_DIGEST_SIZE); 323 324 } else if (digest_size == SHA512_DIGEST_SIZE) { 325 error = crypto_shash_init(desc) ?: 326 crypto_shash_update(desc, iopad, SHA512_BLOCK_SIZE) ?: 327 crypto_shash_export(desc, (void *)&sha512_st); 328 memcpy(result_hash, sha512_st.state, SHA512_DIGEST_SIZE); 329 } else { 330 error = -EINVAL; 331 pr_err("Unknown digest size %d\n", digest_size); 332 } 333 return error; 334 } 335 336 static void chcr_change_order(char *buf, int ds) 337 { 338 int i; 339 340 if (ds == SHA512_DIGEST_SIZE) { 341 for (i = 0; i < (ds / sizeof(u64)); i++) 342 *((__be64 *)buf + i) = 343 cpu_to_be64(*((u64 *)buf + i)); 344 } else { 345 for (i = 0; i < (ds / sizeof(u32)); i++) 346 *((__be32 *)buf + i) = 347 cpu_to_be32(*((u32 *)buf + i)); 348 } 349 } 350 351 static inline int is_hmac(struct crypto_tfm *tfm) 352 { 353 struct crypto_alg *alg = tfm->__crt_alg; 354 struct chcr_alg_template *chcr_crypto_alg = 355 container_of(__crypto_ahash_alg(alg), struct chcr_alg_template, 356 alg.hash); 357 if (chcr_crypto_alg->type == CRYPTO_ALG_TYPE_HMAC) 358 return 1; 359 return 0; 360 } 361 362 static inline void dsgl_walk_init(struct dsgl_walk *walk, 363 struct cpl_rx_phys_dsgl *dsgl) 364 { 365 walk->dsgl = dsgl; 366 walk->nents = 0; 367 walk->to = (struct phys_sge_pairs *)(dsgl + 1); 368 } 369 370 static inline void dsgl_walk_end(struct dsgl_walk *walk, unsigned short qid) 371 { 372 struct cpl_rx_phys_dsgl *phys_cpl; 373 374 phys_cpl = walk->dsgl; 375 376 phys_cpl->op_to_tid = htonl(CPL_RX_PHYS_DSGL_OPCODE_V(CPL_RX_PHYS_DSGL) 377 | CPL_RX_PHYS_DSGL_ISRDMA_V(0)); 378 phys_cpl->pcirlxorder_to_noofsgentr = 379 htonl(CPL_RX_PHYS_DSGL_PCIRLXORDER_V(0) | 380 CPL_RX_PHYS_DSGL_PCINOSNOOP_V(0) | 381 CPL_RX_PHYS_DSGL_PCITPHNTENB_V(0) | 382 CPL_RX_PHYS_DSGL_PCITPHNT_V(0) | 383 CPL_RX_PHYS_DSGL_DCAID_V(0) | 384 CPL_RX_PHYS_DSGL_NOOFSGENTR_V(walk->nents)); 385 phys_cpl->rss_hdr_int.opcode = CPL_RX_PHYS_ADDR; 386 phys_cpl->rss_hdr_int.qid = htons(qid); 387 phys_cpl->rss_hdr_int.hash_val = 0; 388 } 389 390 static inline void dsgl_walk_add_page(struct dsgl_walk *walk, 391 size_t size, 392 dma_addr_t *addr) 393 { 394 int j; 395 396 if (!size) 397 return; 398 j = walk->nents; 399 walk->to->len[j % 8] = htons(size); 400 walk->to->addr[j % 8] = cpu_to_be64(*addr); 401 j++; 402 if ((j % 8) == 0) 403 walk->to++; 404 walk->nents = j; 405 } 406 407 static void dsgl_walk_add_sg(struct dsgl_walk *walk, 408 struct scatterlist *sg, 409 unsigned int slen, 410 unsigned int skip) 411 { 412 int skip_len = 0; 413 unsigned int left_size = slen, len = 0; 414 unsigned int j = walk->nents; 415 int offset, ent_len; 416 417 if (!slen) 418 return; 419 while (sg && skip) { 420 if (sg_dma_len(sg) <= skip) { 421 skip -= sg_dma_len(sg); 422 skip_len = 0; 423 sg = sg_next(sg); 424 } else { 425 skip_len = skip; 426 skip = 0; 427 } 428 } 429 430 while (left_size && sg) { 431 len = min_t(u32, left_size, sg_dma_len(sg) - skip_len); 432 offset = 0; 433 while (len) { 434 ent_len = min_t(u32, len, CHCR_DST_SG_SIZE); 435 walk->to->len[j % 8] = htons(ent_len); 436 walk->to->addr[j % 8] = cpu_to_be64(sg_dma_address(sg) + 437 offset + skip_len); 438 offset += ent_len; 439 len -= ent_len; 440 j++; 441 if ((j % 8) == 0) 442 walk->to++; 443 } 444 walk->last_sg = sg; 445 walk->last_sg_len = min_t(u32, left_size, sg_dma_len(sg) - 446 skip_len) + skip_len; 447 left_size -= min_t(u32, left_size, sg_dma_len(sg) - skip_len); 448 skip_len = 0; 449 sg = sg_next(sg); 450 } 451 walk->nents = j; 452 } 453 454 static inline void ulptx_walk_init(struct ulptx_walk *walk, 455 struct ulptx_sgl *ulp) 456 { 457 walk->sgl = ulp; 458 walk->nents = 0; 459 walk->pair_idx = 0; 460 walk->pair = ulp->sge; 461 walk->last_sg = NULL; 462 walk->last_sg_len = 0; 463 } 464 465 static inline void ulptx_walk_end(struct ulptx_walk *walk) 466 { 467 walk->sgl->cmd_nsge = htonl(ULPTX_CMD_V(ULP_TX_SC_DSGL) | 468 ULPTX_NSGE_V(walk->nents)); 469 } 470 471 472 static inline void ulptx_walk_add_page(struct ulptx_walk *walk, 473 size_t size, 474 dma_addr_t *addr) 475 { 476 if (!size) 477 return; 478 479 if (walk->nents == 0) { 480 walk->sgl->len0 = cpu_to_be32(size); 481 walk->sgl->addr0 = cpu_to_be64(*addr); 482 } else { 483 walk->pair->addr[walk->pair_idx] = cpu_to_be64(*addr); 484 walk->pair->len[walk->pair_idx] = cpu_to_be32(size); 485 walk->pair_idx = !walk->pair_idx; 486 if (!walk->pair_idx) 487 walk->pair++; 488 } 489 walk->nents++; 490 } 491 492 static void ulptx_walk_add_sg(struct ulptx_walk *walk, 493 struct scatterlist *sg, 494 unsigned int len, 495 unsigned int skip) 496 { 497 int small; 498 int skip_len = 0; 499 unsigned int sgmin; 500 501 if (!len) 502 return; 503 while (sg && skip) { 504 if (sg_dma_len(sg) <= skip) { 505 skip -= sg_dma_len(sg); 506 skip_len = 0; 507 sg = sg_next(sg); 508 } else { 509 skip_len = skip; 510 skip = 0; 511 } 512 } 513 WARN(!sg, "SG should not be null here\n"); 514 if (sg && (walk->nents == 0)) { 515 small = min_t(unsigned int, sg_dma_len(sg) - skip_len, len); 516 sgmin = min_t(unsigned int, small, CHCR_SRC_SG_SIZE); 517 walk->sgl->len0 = cpu_to_be32(sgmin); 518 walk->sgl->addr0 = cpu_to_be64(sg_dma_address(sg) + skip_len); 519 walk->nents++; 520 len -= sgmin; 521 walk->last_sg = sg; 522 walk->last_sg_len = sgmin + skip_len; 523 skip_len += sgmin; 524 if (sg_dma_len(sg) == skip_len) { 525 sg = sg_next(sg); 526 skip_len = 0; 527 } 528 } 529 530 while (sg && len) { 531 small = min(sg_dma_len(sg) - skip_len, len); 532 sgmin = min_t(unsigned int, small, CHCR_SRC_SG_SIZE); 533 walk->pair->len[walk->pair_idx] = cpu_to_be32(sgmin); 534 walk->pair->addr[walk->pair_idx] = 535 cpu_to_be64(sg_dma_address(sg) + skip_len); 536 walk->pair_idx = !walk->pair_idx; 537 walk->nents++; 538 if (!walk->pair_idx) 539 walk->pair++; 540 len -= sgmin; 541 skip_len += sgmin; 542 walk->last_sg = sg; 543 walk->last_sg_len = skip_len; 544 if (sg_dma_len(sg) == skip_len) { 545 sg = sg_next(sg); 546 skip_len = 0; 547 } 548 } 549 } 550 551 static inline int get_cryptoalg_subtype(struct crypto_tfm *tfm) 552 { 553 struct crypto_alg *alg = tfm->__crt_alg; 554 struct chcr_alg_template *chcr_crypto_alg = 555 container_of(alg, struct chcr_alg_template, alg.crypto); 556 557 return chcr_crypto_alg->type & CRYPTO_ALG_SUB_TYPE_MASK; 558 } 559 560 static int cxgb4_is_crypto_q_full(struct net_device *dev, unsigned int idx) 561 { 562 struct adapter *adap = netdev2adap(dev); 563 struct sge_uld_txq_info *txq_info = 564 adap->sge.uld_txq_info[CXGB4_TX_CRYPTO]; 565 struct sge_uld_txq *txq; 566 int ret = 0; 567 568 local_bh_disable(); 569 txq = &txq_info->uldtxq[idx]; 570 spin_lock(&txq->sendq.lock); 571 if (txq->full) 572 ret = -1; 573 spin_unlock(&txq->sendq.lock); 574 local_bh_enable(); 575 return ret; 576 } 577 578 static int generate_copy_rrkey(struct ablk_ctx *ablkctx, 579 struct _key_ctx *key_ctx) 580 { 581 if (ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC) { 582 memcpy(key_ctx->key, ablkctx->rrkey, ablkctx->enckey_len); 583 } else { 584 memcpy(key_ctx->key, 585 ablkctx->key + (ablkctx->enckey_len >> 1), 586 ablkctx->enckey_len >> 1); 587 memcpy(key_ctx->key + (ablkctx->enckey_len >> 1), 588 ablkctx->rrkey, ablkctx->enckey_len >> 1); 589 } 590 return 0; 591 } 592 593 static int chcr_hash_ent_in_wr(struct scatterlist *src, 594 unsigned int minsg, 595 unsigned int space, 596 unsigned int srcskip) 597 { 598 int srclen = 0; 599 int srcsg = minsg; 600 int soffset = 0, sless; 601 602 if (sg_dma_len(src) == srcskip) { 603 src = sg_next(src); 604 srcskip = 0; 605 } 606 while (src && space > (sgl_ent_len[srcsg + 1])) { 607 sless = min_t(unsigned int, sg_dma_len(src) - soffset - srcskip, 608 CHCR_SRC_SG_SIZE); 609 srclen += sless; 610 soffset += sless; 611 srcsg++; 612 if (sg_dma_len(src) == (soffset + srcskip)) { 613 src = sg_next(src); 614 soffset = 0; 615 srcskip = 0; 616 } 617 } 618 return srclen; 619 } 620 621 static int chcr_sg_ent_in_wr(struct scatterlist *src, 622 struct scatterlist *dst, 623 unsigned int minsg, 624 unsigned int space, 625 unsigned int srcskip, 626 unsigned int dstskip) 627 { 628 int srclen = 0, dstlen = 0; 629 int srcsg = minsg, dstsg = minsg; 630 int offset = 0, soffset = 0, less, sless = 0; 631 632 if (sg_dma_len(src) == srcskip) { 633 src = sg_next(src); 634 srcskip = 0; 635 } 636 if (sg_dma_len(dst) == dstskip) { 637 dst = sg_next(dst); 638 dstskip = 0; 639 } 640 641 while (src && dst && 642 space > (sgl_ent_len[srcsg + 1] + dsgl_ent_len[dstsg])) { 643 sless = min_t(unsigned int, sg_dma_len(src) - srcskip - soffset, 644 CHCR_SRC_SG_SIZE); 645 srclen += sless; 646 srcsg++; 647 offset = 0; 648 while (dst && ((dstsg + 1) <= MAX_DSGL_ENT) && 649 space > (sgl_ent_len[srcsg] + dsgl_ent_len[dstsg + 1])) { 650 if (srclen <= dstlen) 651 break; 652 less = min_t(unsigned int, sg_dma_len(dst) - offset - 653 dstskip, CHCR_DST_SG_SIZE); 654 dstlen += less; 655 offset += less; 656 if ((offset + dstskip) == sg_dma_len(dst)) { 657 dst = sg_next(dst); 658 offset = 0; 659 } 660 dstsg++; 661 dstskip = 0; 662 } 663 soffset += sless; 664 if ((soffset + srcskip) == sg_dma_len(src)) { 665 src = sg_next(src); 666 srcskip = 0; 667 soffset = 0; 668 } 669 670 } 671 return min(srclen, dstlen); 672 } 673 674 static int chcr_cipher_fallback(struct crypto_skcipher *cipher, 675 u32 flags, 676 struct scatterlist *src, 677 struct scatterlist *dst, 678 unsigned int nbytes, 679 u8 *iv, 680 unsigned short op_type) 681 { 682 int err; 683 684 SKCIPHER_REQUEST_ON_STACK(subreq, cipher); 685 686 skcipher_request_set_tfm(subreq, cipher); 687 skcipher_request_set_callback(subreq, flags, NULL, NULL); 688 skcipher_request_set_crypt(subreq, src, dst, 689 nbytes, iv); 690 691 err = op_type ? crypto_skcipher_decrypt(subreq) : 692 crypto_skcipher_encrypt(subreq); 693 skcipher_request_zero(subreq); 694 695 return err; 696 697 } 698 static inline void create_wreq(struct chcr_context *ctx, 699 struct chcr_wr *chcr_req, 700 struct crypto_async_request *req, 701 unsigned int imm, 702 int hash_sz, 703 unsigned int len16, 704 unsigned int sc_len, 705 unsigned int lcb) 706 { 707 struct uld_ctx *u_ctx = ULD_CTX(ctx); 708 int qid = u_ctx->lldi.rxq_ids[ctx->rx_qidx]; 709 710 711 chcr_req->wreq.op_to_cctx_size = FILL_WR_OP_CCTX_SIZE; 712 chcr_req->wreq.pld_size_hash_size = 713 htonl(FW_CRYPTO_LOOKASIDE_WR_HASH_SIZE_V(hash_sz)); 714 chcr_req->wreq.len16_pkd = 715 htonl(FW_CRYPTO_LOOKASIDE_WR_LEN16_V(DIV_ROUND_UP(len16, 16))); 716 chcr_req->wreq.cookie = cpu_to_be64((uintptr_t)req); 717 chcr_req->wreq.rx_chid_to_rx_q_id = 718 FILL_WR_RX_Q_ID(ctx->dev->rx_channel_id, qid, 719 !!lcb, ctx->tx_qidx); 720 721 chcr_req->ulptx.cmd_dest = FILL_ULPTX_CMD_DEST(ctx->dev->tx_channel_id, 722 qid); 723 chcr_req->ulptx.len = htonl((DIV_ROUND_UP(len16, 16) - 724 ((sizeof(chcr_req->wreq)) >> 4))); 725 726 chcr_req->sc_imm.cmd_more = FILL_CMD_MORE(!imm); 727 chcr_req->sc_imm.len = cpu_to_be32(sizeof(struct cpl_tx_sec_pdu) + 728 sizeof(chcr_req->key_ctx) + sc_len); 729 } 730 731 /** 732 * create_cipher_wr - form the WR for cipher operations 733 * @req: cipher req. 734 * @ctx: crypto driver context of the request. 735 * @qid: ingress qid where response of this WR should be received. 736 * @op_type: encryption or decryption 737 */ 738 static struct sk_buff *create_cipher_wr(struct cipher_wr_param *wrparam) 739 { 740 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(wrparam->req); 741 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm)); 742 struct sk_buff *skb = NULL; 743 struct chcr_wr *chcr_req; 744 struct cpl_rx_phys_dsgl *phys_cpl; 745 struct ulptx_sgl *ulptx; 746 struct chcr_blkcipher_req_ctx *reqctx = 747 ablkcipher_request_ctx(wrparam->req); 748 unsigned int temp = 0, transhdr_len, dst_size; 749 int error; 750 int nents; 751 unsigned int kctx_len; 752 gfp_t flags = wrparam->req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? 753 GFP_KERNEL : GFP_ATOMIC; 754 struct adapter *adap = padap(c_ctx(tfm)->dev); 755 756 nents = sg_nents_xlen(reqctx->dstsg, wrparam->bytes, CHCR_DST_SG_SIZE, 757 reqctx->dst_ofst); 758 dst_size = get_space_for_phys_dsgl(nents); 759 kctx_len = roundup(ablkctx->enckey_len, 16); 760 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size); 761 nents = sg_nents_xlen(reqctx->srcsg, wrparam->bytes, 762 CHCR_SRC_SG_SIZE, reqctx->src_ofst); 763 temp = reqctx->imm ? roundup(wrparam->bytes, 16) : 764 (sgl_len(nents) * 8); 765 transhdr_len += temp; 766 transhdr_len = roundup(transhdr_len, 16); 767 skb = alloc_skb(SGE_MAX_WR_LEN, flags); 768 if (!skb) { 769 error = -ENOMEM; 770 goto err; 771 } 772 chcr_req = __skb_put_zero(skb, transhdr_len); 773 chcr_req->sec_cpl.op_ivinsrtofst = 774 FILL_SEC_CPL_OP_IVINSR(c_ctx(tfm)->dev->rx_channel_id, 2, 1); 775 776 chcr_req->sec_cpl.pldlen = htonl(IV + wrparam->bytes); 777 chcr_req->sec_cpl.aadstart_cipherstop_hi = 778 FILL_SEC_CPL_CIPHERSTOP_HI(0, 0, IV + 1, 0); 779 780 chcr_req->sec_cpl.cipherstop_lo_authinsert = 781 FILL_SEC_CPL_AUTHINSERT(0, 0, 0, 0); 782 chcr_req->sec_cpl.seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(reqctx->op, 0, 783 ablkctx->ciph_mode, 784 0, 0, IV >> 1); 785 chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 0, 786 0, 1, dst_size); 787 788 chcr_req->key_ctx.ctx_hdr = ablkctx->key_ctx_hdr; 789 if ((reqctx->op == CHCR_DECRYPT_OP) && 790 (!(get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) == 791 CRYPTO_ALG_SUB_TYPE_CTR)) && 792 (!(get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) == 793 CRYPTO_ALG_SUB_TYPE_CTR_RFC3686))) { 794 generate_copy_rrkey(ablkctx, &chcr_req->key_ctx); 795 } else { 796 if ((ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC) || 797 (ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CTR)) { 798 memcpy(chcr_req->key_ctx.key, ablkctx->key, 799 ablkctx->enckey_len); 800 } else { 801 memcpy(chcr_req->key_ctx.key, ablkctx->key + 802 (ablkctx->enckey_len >> 1), 803 ablkctx->enckey_len >> 1); 804 memcpy(chcr_req->key_ctx.key + 805 (ablkctx->enckey_len >> 1), 806 ablkctx->key, 807 ablkctx->enckey_len >> 1); 808 } 809 } 810 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len); 811 ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size); 812 chcr_add_cipher_src_ent(wrparam->req, ulptx, wrparam); 813 chcr_add_cipher_dst_ent(wrparam->req, phys_cpl, wrparam, wrparam->qid); 814 815 atomic_inc(&adap->chcr_stats.cipher_rqst); 816 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + kctx_len + IV 817 + (reqctx->imm ? (wrparam->bytes) : 0); 818 create_wreq(c_ctx(tfm), chcr_req, &(wrparam->req->base), reqctx->imm, 0, 819 transhdr_len, temp, 820 ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC); 821 reqctx->skb = skb; 822 823 if (reqctx->op && (ablkctx->ciph_mode == 824 CHCR_SCMD_CIPHER_MODE_AES_CBC)) 825 sg_pcopy_to_buffer(wrparam->req->src, 826 sg_nents(wrparam->req->src), wrparam->req->info, 16, 827 reqctx->processed + wrparam->bytes - AES_BLOCK_SIZE); 828 829 return skb; 830 err: 831 return ERR_PTR(error); 832 } 833 834 static inline int chcr_keyctx_ck_size(unsigned int keylen) 835 { 836 int ck_size = 0; 837 838 if (keylen == AES_KEYSIZE_128) 839 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128; 840 else if (keylen == AES_KEYSIZE_192) 841 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192; 842 else if (keylen == AES_KEYSIZE_256) 843 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256; 844 else 845 ck_size = 0; 846 847 return ck_size; 848 } 849 static int chcr_cipher_fallback_setkey(struct crypto_ablkcipher *cipher, 850 const u8 *key, 851 unsigned int keylen) 852 { 853 struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher); 854 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher)); 855 int err = 0; 856 857 crypto_skcipher_clear_flags(ablkctx->sw_cipher, CRYPTO_TFM_REQ_MASK); 858 crypto_skcipher_set_flags(ablkctx->sw_cipher, cipher->base.crt_flags & 859 CRYPTO_TFM_REQ_MASK); 860 err = crypto_skcipher_setkey(ablkctx->sw_cipher, key, keylen); 861 tfm->crt_flags &= ~CRYPTO_TFM_RES_MASK; 862 tfm->crt_flags |= 863 crypto_skcipher_get_flags(ablkctx->sw_cipher) & 864 CRYPTO_TFM_RES_MASK; 865 return err; 866 } 867 868 static int chcr_aes_cbc_setkey(struct crypto_ablkcipher *cipher, 869 const u8 *key, 870 unsigned int keylen) 871 { 872 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher)); 873 unsigned int ck_size, context_size; 874 u16 alignment = 0; 875 int err; 876 877 err = chcr_cipher_fallback_setkey(cipher, key, keylen); 878 if (err) 879 goto badkey_err; 880 881 ck_size = chcr_keyctx_ck_size(keylen); 882 alignment = ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192 ? 8 : 0; 883 memcpy(ablkctx->key, key, keylen); 884 ablkctx->enckey_len = keylen; 885 get_aes_decrypt_key(ablkctx->rrkey, ablkctx->key, keylen << 3); 886 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD + 887 keylen + alignment) >> 4; 888 889 ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY, 890 0, 0, context_size); 891 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CBC; 892 return 0; 893 badkey_err: 894 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN); 895 ablkctx->enckey_len = 0; 896 897 return err; 898 } 899 900 static int chcr_aes_ctr_setkey(struct crypto_ablkcipher *cipher, 901 const u8 *key, 902 unsigned int keylen) 903 { 904 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher)); 905 unsigned int ck_size, context_size; 906 u16 alignment = 0; 907 int err; 908 909 err = chcr_cipher_fallback_setkey(cipher, key, keylen); 910 if (err) 911 goto badkey_err; 912 ck_size = chcr_keyctx_ck_size(keylen); 913 alignment = (ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192) ? 8 : 0; 914 memcpy(ablkctx->key, key, keylen); 915 ablkctx->enckey_len = keylen; 916 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD + 917 keylen + alignment) >> 4; 918 919 ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY, 920 0, 0, context_size); 921 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CTR; 922 923 return 0; 924 badkey_err: 925 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN); 926 ablkctx->enckey_len = 0; 927 928 return err; 929 } 930 931 static int chcr_aes_rfc3686_setkey(struct crypto_ablkcipher *cipher, 932 const u8 *key, 933 unsigned int keylen) 934 { 935 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher)); 936 unsigned int ck_size, context_size; 937 u16 alignment = 0; 938 int err; 939 940 if (keylen < CTR_RFC3686_NONCE_SIZE) 941 return -EINVAL; 942 memcpy(ablkctx->nonce, key + (keylen - CTR_RFC3686_NONCE_SIZE), 943 CTR_RFC3686_NONCE_SIZE); 944 945 keylen -= CTR_RFC3686_NONCE_SIZE; 946 err = chcr_cipher_fallback_setkey(cipher, key, keylen); 947 if (err) 948 goto badkey_err; 949 950 ck_size = chcr_keyctx_ck_size(keylen); 951 alignment = (ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192) ? 8 : 0; 952 memcpy(ablkctx->key, key, keylen); 953 ablkctx->enckey_len = keylen; 954 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD + 955 keylen + alignment) >> 4; 956 957 ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY, 958 0, 0, context_size); 959 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CTR; 960 961 return 0; 962 badkey_err: 963 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN); 964 ablkctx->enckey_len = 0; 965 966 return err; 967 } 968 static void ctr_add_iv(u8 *dstiv, u8 *srciv, u32 add) 969 { 970 unsigned int size = AES_BLOCK_SIZE; 971 __be32 *b = (__be32 *)(dstiv + size); 972 u32 c, prev; 973 974 memcpy(dstiv, srciv, AES_BLOCK_SIZE); 975 for (; size >= 4; size -= 4) { 976 prev = be32_to_cpu(*--b); 977 c = prev + add; 978 *b = cpu_to_be32(c); 979 if (prev < c) 980 break; 981 add = 1; 982 } 983 984 } 985 986 static unsigned int adjust_ctr_overflow(u8 *iv, u32 bytes) 987 { 988 __be32 *b = (__be32 *)(iv + AES_BLOCK_SIZE); 989 u64 c; 990 u32 temp = be32_to_cpu(*--b); 991 992 temp = ~temp; 993 c = (u64)temp + 1; // No of block can processed withou overflow 994 if ((bytes / AES_BLOCK_SIZE) > c) 995 bytes = c * AES_BLOCK_SIZE; 996 return bytes; 997 } 998 999 static int chcr_update_tweak(struct ablkcipher_request *req, u8 *iv, 1000 u32 isfinal) 1001 { 1002 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); 1003 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm)); 1004 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req); 1005 struct crypto_cipher *cipher; 1006 int ret, i; 1007 u8 *key; 1008 unsigned int keylen; 1009 int round = reqctx->last_req_len / AES_BLOCK_SIZE; 1010 int round8 = round / 8; 1011 1012 cipher = ablkctx->aes_generic; 1013 memcpy(iv, reqctx->iv, AES_BLOCK_SIZE); 1014 1015 keylen = ablkctx->enckey_len / 2; 1016 key = ablkctx->key + keylen; 1017 ret = crypto_cipher_setkey(cipher, key, keylen); 1018 if (ret) 1019 goto out; 1020 crypto_cipher_encrypt_one(cipher, iv, iv); 1021 for (i = 0; i < round8; i++) 1022 gf128mul_x8_ble((le128 *)iv, (le128 *)iv); 1023 1024 for (i = 0; i < (round % 8); i++) 1025 gf128mul_x_ble((le128 *)iv, (le128 *)iv); 1026 1027 if (!isfinal) 1028 crypto_cipher_decrypt_one(cipher, iv, iv); 1029 out: 1030 return ret; 1031 } 1032 1033 static int chcr_update_cipher_iv(struct ablkcipher_request *req, 1034 struct cpl_fw6_pld *fw6_pld, u8 *iv) 1035 { 1036 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); 1037 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req); 1038 int subtype = get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)); 1039 int ret = 0; 1040 1041 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR) 1042 ctr_add_iv(iv, req->info, (reqctx->processed / 1043 AES_BLOCK_SIZE)); 1044 else if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_RFC3686) 1045 *(__be32 *)(reqctx->iv + CTR_RFC3686_NONCE_SIZE + 1046 CTR_RFC3686_IV_SIZE) = cpu_to_be32((reqctx->processed / 1047 AES_BLOCK_SIZE) + 1); 1048 else if (subtype == CRYPTO_ALG_SUB_TYPE_XTS) 1049 ret = chcr_update_tweak(req, iv, 0); 1050 else if (subtype == CRYPTO_ALG_SUB_TYPE_CBC) { 1051 if (reqctx->op) 1052 /*Updated before sending last WR*/ 1053 memcpy(iv, req->info, AES_BLOCK_SIZE); 1054 else 1055 memcpy(iv, &fw6_pld->data[2], AES_BLOCK_SIZE); 1056 } 1057 1058 return ret; 1059 1060 } 1061 1062 /* We need separate function for final iv because in rfc3686 Initial counter 1063 * starts from 1 and buffer size of iv is 8 byte only which remains constant 1064 * for subsequent update requests 1065 */ 1066 1067 static int chcr_final_cipher_iv(struct ablkcipher_request *req, 1068 struct cpl_fw6_pld *fw6_pld, u8 *iv) 1069 { 1070 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); 1071 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req); 1072 int subtype = get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)); 1073 int ret = 0; 1074 1075 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR) 1076 ctr_add_iv(iv, req->info, (reqctx->processed / 1077 AES_BLOCK_SIZE)); 1078 else if (subtype == CRYPTO_ALG_SUB_TYPE_XTS) 1079 ret = chcr_update_tweak(req, iv, 1); 1080 else if (subtype == CRYPTO_ALG_SUB_TYPE_CBC) { 1081 /*Already updated for Decrypt*/ 1082 if (!reqctx->op) 1083 memcpy(iv, &fw6_pld->data[2], AES_BLOCK_SIZE); 1084 1085 } 1086 return ret; 1087 1088 } 1089 1090 static int chcr_handle_cipher_resp(struct ablkcipher_request *req, 1091 unsigned char *input, int err) 1092 { 1093 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); 1094 struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm)); 1095 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm)); 1096 struct sk_buff *skb; 1097 struct cpl_fw6_pld *fw6_pld = (struct cpl_fw6_pld *)input; 1098 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req); 1099 struct cipher_wr_param wrparam; 1100 int bytes; 1101 1102 if (err) 1103 goto unmap; 1104 if (req->nbytes == reqctx->processed) { 1105 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, 1106 req); 1107 err = chcr_final_cipher_iv(req, fw6_pld, req->info); 1108 goto complete; 1109 } 1110 1111 if (!reqctx->imm) { 1112 bytes = chcr_sg_ent_in_wr(reqctx->srcsg, reqctx->dstsg, 0, 1113 CIP_SPACE_LEFT(ablkctx->enckey_len), 1114 reqctx->src_ofst, reqctx->dst_ofst); 1115 if ((bytes + reqctx->processed) >= req->nbytes) 1116 bytes = req->nbytes - reqctx->processed; 1117 else 1118 bytes = rounddown(bytes, 16); 1119 } else { 1120 /*CTR mode counter overfloa*/ 1121 bytes = req->nbytes - reqctx->processed; 1122 } 1123 err = chcr_update_cipher_iv(req, fw6_pld, reqctx->iv); 1124 if (err) 1125 goto unmap; 1126 1127 if (unlikely(bytes == 0)) { 1128 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, 1129 req); 1130 err = chcr_cipher_fallback(ablkctx->sw_cipher, 1131 req->base.flags, 1132 req->src, 1133 req->dst, 1134 req->nbytes, 1135 req->info, 1136 reqctx->op); 1137 goto complete; 1138 } 1139 1140 if (get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) == 1141 CRYPTO_ALG_SUB_TYPE_CTR) 1142 bytes = adjust_ctr_overflow(reqctx->iv, bytes); 1143 wrparam.qid = u_ctx->lldi.rxq_ids[c_ctx(tfm)->rx_qidx]; 1144 wrparam.req = req; 1145 wrparam.bytes = bytes; 1146 skb = create_cipher_wr(&wrparam); 1147 if (IS_ERR(skb)) { 1148 pr_err("chcr : %s : Failed to form WR. No memory\n", __func__); 1149 err = PTR_ERR(skb); 1150 goto unmap; 1151 } 1152 skb->dev = u_ctx->lldi.ports[0]; 1153 set_wr_txq(skb, CPL_PRIORITY_DATA, c_ctx(tfm)->tx_qidx); 1154 chcr_send_wr(skb); 1155 reqctx->last_req_len = bytes; 1156 reqctx->processed += bytes; 1157 return 0; 1158 unmap: 1159 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req); 1160 complete: 1161 req->base.complete(&req->base, err); 1162 return err; 1163 } 1164 1165 static int process_cipher(struct ablkcipher_request *req, 1166 unsigned short qid, 1167 struct sk_buff **skb, 1168 unsigned short op_type) 1169 { 1170 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); 1171 unsigned int ivsize = crypto_ablkcipher_ivsize(tfm); 1172 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req); 1173 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm)); 1174 struct cipher_wr_param wrparam; 1175 int bytes, err = -EINVAL; 1176 1177 reqctx->processed = 0; 1178 if (!req->info) 1179 goto error; 1180 if ((ablkctx->enckey_len == 0) || (ivsize > AES_BLOCK_SIZE) || 1181 (req->nbytes == 0) || 1182 (req->nbytes % crypto_ablkcipher_blocksize(tfm))) { 1183 pr_err("AES: Invalid value of Key Len %d nbytes %d IV Len %d\n", 1184 ablkctx->enckey_len, req->nbytes, ivsize); 1185 goto error; 1186 } 1187 chcr_cipher_dma_map(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req); 1188 if (req->nbytes < (SGE_MAX_WR_LEN - (sizeof(struct chcr_wr) + 1189 AES_MIN_KEY_SIZE + 1190 sizeof(struct cpl_rx_phys_dsgl) + 1191 /*Min dsgl size*/ 1192 32))) { 1193 /* Can be sent as Imm*/ 1194 unsigned int dnents = 0, transhdr_len, phys_dsgl, kctx_len; 1195 1196 dnents = sg_nents_xlen(req->dst, req->nbytes, 1197 CHCR_DST_SG_SIZE, 0); 1198 phys_dsgl = get_space_for_phys_dsgl(dnents); 1199 kctx_len = roundup(ablkctx->enckey_len, 16); 1200 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, phys_dsgl); 1201 reqctx->imm = (transhdr_len + IV + req->nbytes) <= 1202 SGE_MAX_WR_LEN; 1203 bytes = IV + req->nbytes; 1204 1205 } else { 1206 reqctx->imm = 0; 1207 } 1208 1209 if (!reqctx->imm) { 1210 bytes = chcr_sg_ent_in_wr(req->src, req->dst, 0, 1211 CIP_SPACE_LEFT(ablkctx->enckey_len), 1212 0, 0); 1213 if ((bytes + reqctx->processed) >= req->nbytes) 1214 bytes = req->nbytes - reqctx->processed; 1215 else 1216 bytes = rounddown(bytes, 16); 1217 } else { 1218 bytes = req->nbytes; 1219 } 1220 if (get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) == 1221 CRYPTO_ALG_SUB_TYPE_CTR) { 1222 bytes = adjust_ctr_overflow(req->info, bytes); 1223 } 1224 if (get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) == 1225 CRYPTO_ALG_SUB_TYPE_CTR_RFC3686) { 1226 memcpy(reqctx->iv, ablkctx->nonce, CTR_RFC3686_NONCE_SIZE); 1227 memcpy(reqctx->iv + CTR_RFC3686_NONCE_SIZE, req->info, 1228 CTR_RFC3686_IV_SIZE); 1229 1230 /* initialize counter portion of counter block */ 1231 *(__be32 *)(reqctx->iv + CTR_RFC3686_NONCE_SIZE + 1232 CTR_RFC3686_IV_SIZE) = cpu_to_be32(1); 1233 1234 } else { 1235 1236 memcpy(reqctx->iv, req->info, IV); 1237 } 1238 if (unlikely(bytes == 0)) { 1239 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, 1240 req); 1241 err = chcr_cipher_fallback(ablkctx->sw_cipher, 1242 req->base.flags, 1243 req->src, 1244 req->dst, 1245 req->nbytes, 1246 reqctx->iv, 1247 op_type); 1248 goto error; 1249 } 1250 reqctx->op = op_type; 1251 reqctx->srcsg = req->src; 1252 reqctx->dstsg = req->dst; 1253 reqctx->src_ofst = 0; 1254 reqctx->dst_ofst = 0; 1255 wrparam.qid = qid; 1256 wrparam.req = req; 1257 wrparam.bytes = bytes; 1258 *skb = create_cipher_wr(&wrparam); 1259 if (IS_ERR(*skb)) { 1260 err = PTR_ERR(*skb); 1261 goto unmap; 1262 } 1263 reqctx->processed = bytes; 1264 reqctx->last_req_len = bytes; 1265 1266 return 0; 1267 unmap: 1268 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req); 1269 error: 1270 return err; 1271 } 1272 1273 static int chcr_aes_encrypt(struct ablkcipher_request *req) 1274 { 1275 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); 1276 struct sk_buff *skb = NULL; 1277 int err, isfull = 0; 1278 struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm)); 1279 1280 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0], 1281 c_ctx(tfm)->tx_qidx))) { 1282 isfull = 1; 1283 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) 1284 return -ENOSPC; 1285 } 1286 1287 err = process_cipher(req, u_ctx->lldi.rxq_ids[c_ctx(tfm)->rx_qidx], 1288 &skb, CHCR_ENCRYPT_OP); 1289 if (err || !skb) 1290 return err; 1291 skb->dev = u_ctx->lldi.ports[0]; 1292 set_wr_txq(skb, CPL_PRIORITY_DATA, c_ctx(tfm)->tx_qidx); 1293 chcr_send_wr(skb); 1294 return isfull ? -EBUSY : -EINPROGRESS; 1295 } 1296 1297 static int chcr_aes_decrypt(struct ablkcipher_request *req) 1298 { 1299 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); 1300 struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm)); 1301 struct sk_buff *skb = NULL; 1302 int err, isfull = 0; 1303 1304 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0], 1305 c_ctx(tfm)->tx_qidx))) { 1306 isfull = 1; 1307 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) 1308 return -ENOSPC; 1309 } 1310 1311 err = process_cipher(req, u_ctx->lldi.rxq_ids[c_ctx(tfm)->rx_qidx], 1312 &skb, CHCR_DECRYPT_OP); 1313 if (err || !skb) 1314 return err; 1315 skb->dev = u_ctx->lldi.ports[0]; 1316 set_wr_txq(skb, CPL_PRIORITY_DATA, c_ctx(tfm)->tx_qidx); 1317 chcr_send_wr(skb); 1318 return isfull ? -EBUSY : -EINPROGRESS; 1319 } 1320 1321 static int chcr_device_init(struct chcr_context *ctx) 1322 { 1323 struct uld_ctx *u_ctx = NULL; 1324 struct adapter *adap; 1325 unsigned int id; 1326 int txq_perchan, txq_idx, ntxq; 1327 int err = 0, rxq_perchan, rxq_idx; 1328 1329 id = smp_processor_id(); 1330 if (!ctx->dev) { 1331 u_ctx = assign_chcr_device(); 1332 if (!u_ctx) { 1333 pr_err("chcr device assignment fails\n"); 1334 goto out; 1335 } 1336 ctx->dev = u_ctx->dev; 1337 adap = padap(ctx->dev); 1338 ntxq = min_not_zero((unsigned int)u_ctx->lldi.nrxq, 1339 adap->vres.ncrypto_fc); 1340 rxq_perchan = u_ctx->lldi.nrxq / u_ctx->lldi.nchan; 1341 txq_perchan = ntxq / u_ctx->lldi.nchan; 1342 rxq_idx = ctx->dev->tx_channel_id * rxq_perchan; 1343 rxq_idx += id % rxq_perchan; 1344 txq_idx = ctx->dev->tx_channel_id * txq_perchan; 1345 txq_idx += id % txq_perchan; 1346 spin_lock(&ctx->dev->lock_chcr_dev); 1347 ctx->rx_qidx = rxq_idx; 1348 ctx->tx_qidx = txq_idx; 1349 ctx->dev->tx_channel_id = !ctx->dev->tx_channel_id; 1350 ctx->dev->rx_channel_id = 0; 1351 spin_unlock(&ctx->dev->lock_chcr_dev); 1352 } 1353 out: 1354 return err; 1355 } 1356 1357 static int chcr_cra_init(struct crypto_tfm *tfm) 1358 { 1359 struct crypto_alg *alg = tfm->__crt_alg; 1360 struct chcr_context *ctx = crypto_tfm_ctx(tfm); 1361 struct ablk_ctx *ablkctx = ABLK_CTX(ctx); 1362 1363 ablkctx->sw_cipher = crypto_alloc_skcipher(alg->cra_name, 0, 1364 CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK); 1365 if (IS_ERR(ablkctx->sw_cipher)) { 1366 pr_err("failed to allocate fallback for %s\n", alg->cra_name); 1367 return PTR_ERR(ablkctx->sw_cipher); 1368 } 1369 1370 if (get_cryptoalg_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_XTS) { 1371 /* To update tweak*/ 1372 ablkctx->aes_generic = crypto_alloc_cipher("aes-generic", 0, 0); 1373 if (IS_ERR(ablkctx->aes_generic)) { 1374 pr_err("failed to allocate aes cipher for tweak\n"); 1375 return PTR_ERR(ablkctx->aes_generic); 1376 } 1377 } else 1378 ablkctx->aes_generic = NULL; 1379 1380 tfm->crt_ablkcipher.reqsize = sizeof(struct chcr_blkcipher_req_ctx); 1381 return chcr_device_init(crypto_tfm_ctx(tfm)); 1382 } 1383 1384 static int chcr_rfc3686_init(struct crypto_tfm *tfm) 1385 { 1386 struct crypto_alg *alg = tfm->__crt_alg; 1387 struct chcr_context *ctx = crypto_tfm_ctx(tfm); 1388 struct ablk_ctx *ablkctx = ABLK_CTX(ctx); 1389 1390 /*RFC3686 initialises IV counter value to 1, rfc3686(ctr(aes)) 1391 * cannot be used as fallback in chcr_handle_cipher_response 1392 */ 1393 ablkctx->sw_cipher = crypto_alloc_skcipher("ctr(aes)", 0, 1394 CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK); 1395 if (IS_ERR(ablkctx->sw_cipher)) { 1396 pr_err("failed to allocate fallback for %s\n", alg->cra_name); 1397 return PTR_ERR(ablkctx->sw_cipher); 1398 } 1399 tfm->crt_ablkcipher.reqsize = sizeof(struct chcr_blkcipher_req_ctx); 1400 return chcr_device_init(crypto_tfm_ctx(tfm)); 1401 } 1402 1403 1404 static void chcr_cra_exit(struct crypto_tfm *tfm) 1405 { 1406 struct chcr_context *ctx = crypto_tfm_ctx(tfm); 1407 struct ablk_ctx *ablkctx = ABLK_CTX(ctx); 1408 1409 crypto_free_skcipher(ablkctx->sw_cipher); 1410 if (ablkctx->aes_generic) 1411 crypto_free_cipher(ablkctx->aes_generic); 1412 } 1413 1414 static int get_alg_config(struct algo_param *params, 1415 unsigned int auth_size) 1416 { 1417 switch (auth_size) { 1418 case SHA1_DIGEST_SIZE: 1419 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_160; 1420 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA1; 1421 params->result_size = SHA1_DIGEST_SIZE; 1422 break; 1423 case SHA224_DIGEST_SIZE: 1424 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256; 1425 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA224; 1426 params->result_size = SHA256_DIGEST_SIZE; 1427 break; 1428 case SHA256_DIGEST_SIZE: 1429 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256; 1430 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA256; 1431 params->result_size = SHA256_DIGEST_SIZE; 1432 break; 1433 case SHA384_DIGEST_SIZE: 1434 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_512; 1435 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA512_384; 1436 params->result_size = SHA512_DIGEST_SIZE; 1437 break; 1438 case SHA512_DIGEST_SIZE: 1439 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_512; 1440 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA512_512; 1441 params->result_size = SHA512_DIGEST_SIZE; 1442 break; 1443 default: 1444 pr_err("chcr : ERROR, unsupported digest size\n"); 1445 return -EINVAL; 1446 } 1447 return 0; 1448 } 1449 1450 static inline void chcr_free_shash(struct crypto_shash *base_hash) 1451 { 1452 crypto_free_shash(base_hash); 1453 } 1454 1455 /** 1456 * create_hash_wr - Create hash work request 1457 * @req - Cipher req base 1458 */ 1459 static struct sk_buff *create_hash_wr(struct ahash_request *req, 1460 struct hash_wr_param *param) 1461 { 1462 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req); 1463 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); 1464 struct hmac_ctx *hmacctx = HMAC_CTX(h_ctx(tfm)); 1465 struct sk_buff *skb = NULL; 1466 struct uld_ctx *u_ctx = ULD_CTX(h_ctx(tfm)); 1467 struct chcr_wr *chcr_req; 1468 struct ulptx_sgl *ulptx; 1469 unsigned int nents = 0, transhdr_len; 1470 unsigned int temp = 0; 1471 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL : 1472 GFP_ATOMIC; 1473 struct adapter *adap = padap(h_ctx(tfm)->dev); 1474 int error = 0; 1475 1476 transhdr_len = HASH_TRANSHDR_SIZE(param->kctx_len); 1477 req_ctx->hctx_wr.imm = (transhdr_len + param->bfr_len + 1478 param->sg_len) <= SGE_MAX_WR_LEN; 1479 nents = sg_nents_xlen(req_ctx->hctx_wr.srcsg, param->sg_len, 1480 CHCR_SRC_SG_SIZE, req_ctx->hctx_wr.src_ofst); 1481 nents += param->bfr_len ? 1 : 0; 1482 transhdr_len += req_ctx->hctx_wr.imm ? roundup(param->bfr_len + 1483 param->sg_len, 16) : (sgl_len(nents) * 8); 1484 transhdr_len = roundup(transhdr_len, 16); 1485 1486 skb = alloc_skb(transhdr_len, flags); 1487 if (!skb) 1488 return ERR_PTR(-ENOMEM); 1489 chcr_req = __skb_put_zero(skb, transhdr_len); 1490 1491 chcr_req->sec_cpl.op_ivinsrtofst = 1492 FILL_SEC_CPL_OP_IVINSR(h_ctx(tfm)->dev->rx_channel_id, 2, 0); 1493 chcr_req->sec_cpl.pldlen = htonl(param->bfr_len + param->sg_len); 1494 1495 chcr_req->sec_cpl.aadstart_cipherstop_hi = 1496 FILL_SEC_CPL_CIPHERSTOP_HI(0, 0, 0, 0); 1497 chcr_req->sec_cpl.cipherstop_lo_authinsert = 1498 FILL_SEC_CPL_AUTHINSERT(0, 1, 0, 0); 1499 chcr_req->sec_cpl.seqno_numivs = 1500 FILL_SEC_CPL_SCMD0_SEQNO(0, 0, 0, param->alg_prm.auth_mode, 1501 param->opad_needed, 0); 1502 1503 chcr_req->sec_cpl.ivgen_hdrlen = 1504 FILL_SEC_CPL_IVGEN_HDRLEN(param->last, param->more, 0, 1, 0, 0); 1505 1506 memcpy(chcr_req->key_ctx.key, req_ctx->partial_hash, 1507 param->alg_prm.result_size); 1508 1509 if (param->opad_needed) 1510 memcpy(chcr_req->key_ctx.key + 1511 ((param->alg_prm.result_size <= 32) ? 32 : 1512 CHCR_HASH_MAX_DIGEST_SIZE), 1513 hmacctx->opad, param->alg_prm.result_size); 1514 1515 chcr_req->key_ctx.ctx_hdr = FILL_KEY_CTX_HDR(CHCR_KEYCTX_NO_KEY, 1516 param->alg_prm.mk_size, 0, 1517 param->opad_needed, 1518 ((param->kctx_len + 1519 sizeof(chcr_req->key_ctx)) >> 4)); 1520 chcr_req->sec_cpl.scmd1 = cpu_to_be64((u64)param->scmd1); 1521 ulptx = (struct ulptx_sgl *)((u8 *)(chcr_req + 1) + param->kctx_len + 1522 DUMMY_BYTES); 1523 if (param->bfr_len != 0) { 1524 req_ctx->hctx_wr.dma_addr = 1525 dma_map_single(&u_ctx->lldi.pdev->dev, req_ctx->reqbfr, 1526 param->bfr_len, DMA_TO_DEVICE); 1527 if (dma_mapping_error(&u_ctx->lldi.pdev->dev, 1528 req_ctx->hctx_wr. dma_addr)) { 1529 error = -ENOMEM; 1530 goto err; 1531 } 1532 req_ctx->hctx_wr.dma_len = param->bfr_len; 1533 } else { 1534 req_ctx->hctx_wr.dma_addr = 0; 1535 } 1536 chcr_add_hash_src_ent(req, ulptx, param); 1537 /* Request upto max wr size */ 1538 temp = param->kctx_len + DUMMY_BYTES + (req_ctx->hctx_wr.imm ? 1539 (param->sg_len + param->bfr_len) : 0); 1540 atomic_inc(&adap->chcr_stats.digest_rqst); 1541 create_wreq(h_ctx(tfm), chcr_req, &req->base, req_ctx->hctx_wr.imm, 1542 param->hash_size, transhdr_len, 1543 temp, 0); 1544 req_ctx->hctx_wr.skb = skb; 1545 return skb; 1546 err: 1547 kfree_skb(skb); 1548 return ERR_PTR(error); 1549 } 1550 1551 static int chcr_ahash_update(struct ahash_request *req) 1552 { 1553 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req); 1554 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req); 1555 struct uld_ctx *u_ctx = NULL; 1556 struct sk_buff *skb; 1557 u8 remainder = 0, bs; 1558 unsigned int nbytes = req->nbytes; 1559 struct hash_wr_param params; 1560 int error, isfull = 0; 1561 1562 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm)); 1563 u_ctx = ULD_CTX(h_ctx(rtfm)); 1564 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0], 1565 h_ctx(rtfm)->tx_qidx))) { 1566 isfull = 1; 1567 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) 1568 return -ENOSPC; 1569 } 1570 1571 if (nbytes + req_ctx->reqlen >= bs) { 1572 remainder = (nbytes + req_ctx->reqlen) % bs; 1573 nbytes = nbytes + req_ctx->reqlen - remainder; 1574 } else { 1575 sg_pcopy_to_buffer(req->src, sg_nents(req->src), req_ctx->reqbfr 1576 + req_ctx->reqlen, nbytes, 0); 1577 req_ctx->reqlen += nbytes; 1578 return 0; 1579 } 1580 chcr_init_hctx_per_wr(req_ctx); 1581 error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req); 1582 if (error) 1583 return -ENOMEM; 1584 get_alg_config(¶ms.alg_prm, crypto_ahash_digestsize(rtfm)); 1585 params.kctx_len = roundup(params.alg_prm.result_size, 16); 1586 params.sg_len = chcr_hash_ent_in_wr(req->src, !!req_ctx->reqlen, 1587 HASH_SPACE_LEFT(params.kctx_len), 0); 1588 if (params.sg_len > req->nbytes) 1589 params.sg_len = req->nbytes; 1590 params.sg_len = rounddown(params.sg_len + req_ctx->reqlen, bs) - 1591 req_ctx->reqlen; 1592 params.opad_needed = 0; 1593 params.more = 1; 1594 params.last = 0; 1595 params.bfr_len = req_ctx->reqlen; 1596 params.scmd1 = 0; 1597 req_ctx->hctx_wr.srcsg = req->src; 1598 1599 params.hash_size = params.alg_prm.result_size; 1600 req_ctx->data_len += params.sg_len + params.bfr_len; 1601 skb = create_hash_wr(req, ¶ms); 1602 if (IS_ERR(skb)) { 1603 error = PTR_ERR(skb); 1604 goto unmap; 1605 } 1606 1607 req_ctx->hctx_wr.processed += params.sg_len; 1608 if (remainder) { 1609 /* Swap buffers */ 1610 swap(req_ctx->reqbfr, req_ctx->skbfr); 1611 sg_pcopy_to_buffer(req->src, sg_nents(req->src), 1612 req_ctx->reqbfr, remainder, req->nbytes - 1613 remainder); 1614 } 1615 req_ctx->reqlen = remainder; 1616 skb->dev = u_ctx->lldi.ports[0]; 1617 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx); 1618 chcr_send_wr(skb); 1619 1620 return isfull ? -EBUSY : -EINPROGRESS; 1621 unmap: 1622 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req); 1623 return error; 1624 } 1625 1626 static void create_last_hash_block(char *bfr_ptr, unsigned int bs, u64 scmd1) 1627 { 1628 memset(bfr_ptr, 0, bs); 1629 *bfr_ptr = 0x80; 1630 if (bs == 64) 1631 *(__be64 *)(bfr_ptr + 56) = cpu_to_be64(scmd1 << 3); 1632 else 1633 *(__be64 *)(bfr_ptr + 120) = cpu_to_be64(scmd1 << 3); 1634 } 1635 1636 static int chcr_ahash_final(struct ahash_request *req) 1637 { 1638 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req); 1639 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req); 1640 struct hash_wr_param params; 1641 struct sk_buff *skb; 1642 struct uld_ctx *u_ctx = NULL; 1643 u8 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm)); 1644 1645 chcr_init_hctx_per_wr(req_ctx); 1646 u_ctx = ULD_CTX(h_ctx(rtfm)); 1647 if (is_hmac(crypto_ahash_tfm(rtfm))) 1648 params.opad_needed = 1; 1649 else 1650 params.opad_needed = 0; 1651 params.sg_len = 0; 1652 req_ctx->hctx_wr.isfinal = 1; 1653 get_alg_config(¶ms.alg_prm, crypto_ahash_digestsize(rtfm)); 1654 params.kctx_len = roundup(params.alg_prm.result_size, 16); 1655 if (is_hmac(crypto_ahash_tfm(rtfm))) { 1656 params.opad_needed = 1; 1657 params.kctx_len *= 2; 1658 } else { 1659 params.opad_needed = 0; 1660 } 1661 1662 req_ctx->hctx_wr.result = 1; 1663 params.bfr_len = req_ctx->reqlen; 1664 req_ctx->data_len += params.bfr_len + params.sg_len; 1665 req_ctx->hctx_wr.srcsg = req->src; 1666 if (req_ctx->reqlen == 0) { 1667 create_last_hash_block(req_ctx->reqbfr, bs, req_ctx->data_len); 1668 params.last = 0; 1669 params.more = 1; 1670 params.scmd1 = 0; 1671 params.bfr_len = bs; 1672 1673 } else { 1674 params.scmd1 = req_ctx->data_len; 1675 params.last = 1; 1676 params.more = 0; 1677 } 1678 params.hash_size = crypto_ahash_digestsize(rtfm); 1679 skb = create_hash_wr(req, ¶ms); 1680 if (IS_ERR(skb)) 1681 return PTR_ERR(skb); 1682 req_ctx->reqlen = 0; 1683 skb->dev = u_ctx->lldi.ports[0]; 1684 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx); 1685 chcr_send_wr(skb); 1686 return -EINPROGRESS; 1687 } 1688 1689 static int chcr_ahash_finup(struct ahash_request *req) 1690 { 1691 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req); 1692 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req); 1693 struct uld_ctx *u_ctx = NULL; 1694 struct sk_buff *skb; 1695 struct hash_wr_param params; 1696 u8 bs; 1697 int error, isfull = 0; 1698 1699 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm)); 1700 u_ctx = ULD_CTX(h_ctx(rtfm)); 1701 1702 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0], 1703 h_ctx(rtfm)->tx_qidx))) { 1704 isfull = 1; 1705 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) 1706 return -ENOSPC; 1707 } 1708 chcr_init_hctx_per_wr(req_ctx); 1709 error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req); 1710 if (error) 1711 return -ENOMEM; 1712 1713 get_alg_config(¶ms.alg_prm, crypto_ahash_digestsize(rtfm)); 1714 params.kctx_len = roundup(params.alg_prm.result_size, 16); 1715 if (is_hmac(crypto_ahash_tfm(rtfm))) { 1716 params.kctx_len *= 2; 1717 params.opad_needed = 1; 1718 } else { 1719 params.opad_needed = 0; 1720 } 1721 1722 params.sg_len = chcr_hash_ent_in_wr(req->src, !!req_ctx->reqlen, 1723 HASH_SPACE_LEFT(params.kctx_len), 0); 1724 if (params.sg_len < req->nbytes) { 1725 if (is_hmac(crypto_ahash_tfm(rtfm))) { 1726 params.kctx_len /= 2; 1727 params.opad_needed = 0; 1728 } 1729 params.last = 0; 1730 params.more = 1; 1731 params.sg_len = rounddown(params.sg_len + req_ctx->reqlen, bs) 1732 - req_ctx->reqlen; 1733 params.hash_size = params.alg_prm.result_size; 1734 params.scmd1 = 0; 1735 } else { 1736 params.last = 1; 1737 params.more = 0; 1738 params.sg_len = req->nbytes; 1739 params.hash_size = crypto_ahash_digestsize(rtfm); 1740 params.scmd1 = req_ctx->data_len + req_ctx->reqlen + 1741 params.sg_len; 1742 } 1743 params.bfr_len = req_ctx->reqlen; 1744 req_ctx->data_len += params.bfr_len + params.sg_len; 1745 req_ctx->hctx_wr.result = 1; 1746 req_ctx->hctx_wr.srcsg = req->src; 1747 if ((req_ctx->reqlen + req->nbytes) == 0) { 1748 create_last_hash_block(req_ctx->reqbfr, bs, req_ctx->data_len); 1749 params.last = 0; 1750 params.more = 1; 1751 params.scmd1 = 0; 1752 params.bfr_len = bs; 1753 } 1754 skb = create_hash_wr(req, ¶ms); 1755 if (IS_ERR(skb)) { 1756 error = PTR_ERR(skb); 1757 goto unmap; 1758 } 1759 req_ctx->reqlen = 0; 1760 req_ctx->hctx_wr.processed += params.sg_len; 1761 skb->dev = u_ctx->lldi.ports[0]; 1762 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx); 1763 chcr_send_wr(skb); 1764 1765 return isfull ? -EBUSY : -EINPROGRESS; 1766 unmap: 1767 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req); 1768 return error; 1769 } 1770 1771 static int chcr_ahash_digest(struct ahash_request *req) 1772 { 1773 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req); 1774 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req); 1775 struct uld_ctx *u_ctx = NULL; 1776 struct sk_buff *skb; 1777 struct hash_wr_param params; 1778 u8 bs; 1779 int error, isfull = 0; 1780 1781 rtfm->init(req); 1782 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm)); 1783 1784 u_ctx = ULD_CTX(h_ctx(rtfm)); 1785 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0], 1786 h_ctx(rtfm)->tx_qidx))) { 1787 isfull = 1; 1788 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) 1789 return -ENOSPC; 1790 } 1791 1792 chcr_init_hctx_per_wr(req_ctx); 1793 error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req); 1794 if (error) 1795 return -ENOMEM; 1796 1797 get_alg_config(¶ms.alg_prm, crypto_ahash_digestsize(rtfm)); 1798 params.kctx_len = roundup(params.alg_prm.result_size, 16); 1799 if (is_hmac(crypto_ahash_tfm(rtfm))) { 1800 params.kctx_len *= 2; 1801 params.opad_needed = 1; 1802 } else { 1803 params.opad_needed = 0; 1804 } 1805 params.sg_len = chcr_hash_ent_in_wr(req->src, !!req_ctx->reqlen, 1806 HASH_SPACE_LEFT(params.kctx_len), 0); 1807 if (params.sg_len < req->nbytes) { 1808 if (is_hmac(crypto_ahash_tfm(rtfm))) { 1809 params.kctx_len /= 2; 1810 params.opad_needed = 0; 1811 } 1812 params.last = 0; 1813 params.more = 1; 1814 params.scmd1 = 0; 1815 params.sg_len = rounddown(params.sg_len, bs); 1816 params.hash_size = params.alg_prm.result_size; 1817 } else { 1818 params.sg_len = req->nbytes; 1819 params.hash_size = crypto_ahash_digestsize(rtfm); 1820 params.last = 1; 1821 params.more = 0; 1822 params.scmd1 = req->nbytes + req_ctx->data_len; 1823 1824 } 1825 params.bfr_len = 0; 1826 req_ctx->hctx_wr.result = 1; 1827 req_ctx->hctx_wr.srcsg = req->src; 1828 req_ctx->data_len += params.bfr_len + params.sg_len; 1829 1830 if (req->nbytes == 0) { 1831 create_last_hash_block(req_ctx->reqbfr, bs, 0); 1832 params.more = 1; 1833 params.bfr_len = bs; 1834 } 1835 1836 skb = create_hash_wr(req, ¶ms); 1837 if (IS_ERR(skb)) { 1838 error = PTR_ERR(skb); 1839 goto unmap; 1840 } 1841 req_ctx->hctx_wr.processed += params.sg_len; 1842 skb->dev = u_ctx->lldi.ports[0]; 1843 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx); 1844 chcr_send_wr(skb); 1845 return isfull ? -EBUSY : -EINPROGRESS; 1846 unmap: 1847 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req); 1848 return error; 1849 } 1850 1851 static int chcr_ahash_continue(struct ahash_request *req) 1852 { 1853 struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req); 1854 struct chcr_hctx_per_wr *hctx_wr = &reqctx->hctx_wr; 1855 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req); 1856 struct uld_ctx *u_ctx = NULL; 1857 struct sk_buff *skb; 1858 struct hash_wr_param params; 1859 u8 bs; 1860 int error; 1861 1862 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm)); 1863 u_ctx = ULD_CTX(h_ctx(rtfm)); 1864 get_alg_config(¶ms.alg_prm, crypto_ahash_digestsize(rtfm)); 1865 params.kctx_len = roundup(params.alg_prm.result_size, 16); 1866 if (is_hmac(crypto_ahash_tfm(rtfm))) { 1867 params.kctx_len *= 2; 1868 params.opad_needed = 1; 1869 } else { 1870 params.opad_needed = 0; 1871 } 1872 params.sg_len = chcr_hash_ent_in_wr(hctx_wr->srcsg, 0, 1873 HASH_SPACE_LEFT(params.kctx_len), 1874 hctx_wr->src_ofst); 1875 if ((params.sg_len + hctx_wr->processed) > req->nbytes) 1876 params.sg_len = req->nbytes - hctx_wr->processed; 1877 if (!hctx_wr->result || 1878 ((params.sg_len + hctx_wr->processed) < req->nbytes)) { 1879 if (is_hmac(crypto_ahash_tfm(rtfm))) { 1880 params.kctx_len /= 2; 1881 params.opad_needed = 0; 1882 } 1883 params.last = 0; 1884 params.more = 1; 1885 params.sg_len = rounddown(params.sg_len, bs); 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.hash_size = crypto_ahash_digestsize(rtfm); 1892 params.scmd1 = reqctx->data_len + params.sg_len; 1893 } 1894 params.bfr_len = 0; 1895 reqctx->data_len += params.sg_len; 1896 skb = create_hash_wr(req, ¶ms); 1897 if (IS_ERR(skb)) { 1898 error = PTR_ERR(skb); 1899 goto err; 1900 } 1901 hctx_wr->processed += params.sg_len; 1902 skb->dev = u_ctx->lldi.ports[0]; 1903 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx); 1904 chcr_send_wr(skb); 1905 return 0; 1906 err: 1907 return error; 1908 } 1909 1910 static inline void chcr_handle_ahash_resp(struct ahash_request *req, 1911 unsigned char *input, 1912 int err) 1913 { 1914 struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req); 1915 struct chcr_hctx_per_wr *hctx_wr = &reqctx->hctx_wr; 1916 int digestsize, updated_digestsize; 1917 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); 1918 struct uld_ctx *u_ctx = ULD_CTX(h_ctx(tfm)); 1919 1920 if (input == NULL) 1921 goto out; 1922 digestsize = crypto_ahash_digestsize(crypto_ahash_reqtfm(req)); 1923 updated_digestsize = digestsize; 1924 if (digestsize == SHA224_DIGEST_SIZE) 1925 updated_digestsize = SHA256_DIGEST_SIZE; 1926 else if (digestsize == SHA384_DIGEST_SIZE) 1927 updated_digestsize = SHA512_DIGEST_SIZE; 1928 1929 if (hctx_wr->dma_addr) { 1930 dma_unmap_single(&u_ctx->lldi.pdev->dev, hctx_wr->dma_addr, 1931 hctx_wr->dma_len, DMA_TO_DEVICE); 1932 hctx_wr->dma_addr = 0; 1933 } 1934 if (hctx_wr->isfinal || ((hctx_wr->processed + reqctx->reqlen) == 1935 req->nbytes)) { 1936 if (hctx_wr->result == 1) { 1937 hctx_wr->result = 0; 1938 memcpy(req->result, input + sizeof(struct cpl_fw6_pld), 1939 digestsize); 1940 } else { 1941 memcpy(reqctx->partial_hash, 1942 input + sizeof(struct cpl_fw6_pld), 1943 updated_digestsize); 1944 1945 } 1946 goto unmap; 1947 } 1948 memcpy(reqctx->partial_hash, input + sizeof(struct cpl_fw6_pld), 1949 updated_digestsize); 1950 1951 err = chcr_ahash_continue(req); 1952 if (err) 1953 goto unmap; 1954 return; 1955 unmap: 1956 if (hctx_wr->is_sg_map) 1957 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req); 1958 1959 1960 out: 1961 req->base.complete(&req->base, err); 1962 } 1963 1964 /* 1965 * chcr_handle_resp - Unmap the DMA buffers associated with the request 1966 * @req: crypto request 1967 */ 1968 int chcr_handle_resp(struct crypto_async_request *req, unsigned char *input, 1969 int err) 1970 { 1971 struct crypto_tfm *tfm = req->tfm; 1972 struct chcr_context *ctx = crypto_tfm_ctx(tfm); 1973 struct adapter *adap = padap(ctx->dev); 1974 1975 switch (tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK) { 1976 case CRYPTO_ALG_TYPE_AEAD: 1977 chcr_handle_aead_resp(aead_request_cast(req), input, err); 1978 break; 1979 1980 case CRYPTO_ALG_TYPE_ABLKCIPHER: 1981 err = chcr_handle_cipher_resp(ablkcipher_request_cast(req), 1982 input, err); 1983 break; 1984 1985 case CRYPTO_ALG_TYPE_AHASH: 1986 chcr_handle_ahash_resp(ahash_request_cast(req), input, err); 1987 } 1988 atomic_inc(&adap->chcr_stats.complete); 1989 return err; 1990 } 1991 static int chcr_ahash_export(struct ahash_request *areq, void *out) 1992 { 1993 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); 1994 struct chcr_ahash_req_ctx *state = out; 1995 1996 state->reqlen = req_ctx->reqlen; 1997 state->data_len = req_ctx->data_len; 1998 memcpy(state->bfr1, req_ctx->reqbfr, req_ctx->reqlen); 1999 memcpy(state->partial_hash, req_ctx->partial_hash, 2000 CHCR_HASH_MAX_DIGEST_SIZE); 2001 chcr_init_hctx_per_wr(state); 2002 return 0; 2003 } 2004 2005 static int chcr_ahash_import(struct ahash_request *areq, const void *in) 2006 { 2007 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); 2008 struct chcr_ahash_req_ctx *state = (struct chcr_ahash_req_ctx *)in; 2009 2010 req_ctx->reqlen = state->reqlen; 2011 req_ctx->data_len = state->data_len; 2012 req_ctx->reqbfr = req_ctx->bfr1; 2013 req_ctx->skbfr = req_ctx->bfr2; 2014 memcpy(req_ctx->bfr1, state->bfr1, CHCR_HASH_MAX_BLOCK_SIZE_128); 2015 memcpy(req_ctx->partial_hash, state->partial_hash, 2016 CHCR_HASH_MAX_DIGEST_SIZE); 2017 chcr_init_hctx_per_wr(req_ctx); 2018 return 0; 2019 } 2020 2021 static int chcr_ahash_setkey(struct crypto_ahash *tfm, const u8 *key, 2022 unsigned int keylen) 2023 { 2024 struct hmac_ctx *hmacctx = HMAC_CTX(h_ctx(tfm)); 2025 unsigned int digestsize = crypto_ahash_digestsize(tfm); 2026 unsigned int bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm)); 2027 unsigned int i, err = 0, updated_digestsize; 2028 2029 SHASH_DESC_ON_STACK(shash, hmacctx->base_hash); 2030 2031 /* use the key to calculate the ipad and opad. ipad will sent with the 2032 * first request's data. opad will be sent with the final hash result 2033 * ipad in hmacctx->ipad and opad in hmacctx->opad location 2034 */ 2035 shash->tfm = hmacctx->base_hash; 2036 shash->flags = crypto_shash_get_flags(hmacctx->base_hash); 2037 if (keylen > bs) { 2038 err = crypto_shash_digest(shash, key, keylen, 2039 hmacctx->ipad); 2040 if (err) 2041 goto out; 2042 keylen = digestsize; 2043 } else { 2044 memcpy(hmacctx->ipad, key, keylen); 2045 } 2046 memset(hmacctx->ipad + keylen, 0, bs - keylen); 2047 memcpy(hmacctx->opad, hmacctx->ipad, bs); 2048 2049 for (i = 0; i < bs / sizeof(int); i++) { 2050 *((unsigned int *)(&hmacctx->ipad) + i) ^= IPAD_DATA; 2051 *((unsigned int *)(&hmacctx->opad) + i) ^= OPAD_DATA; 2052 } 2053 2054 updated_digestsize = digestsize; 2055 if (digestsize == SHA224_DIGEST_SIZE) 2056 updated_digestsize = SHA256_DIGEST_SIZE; 2057 else if (digestsize == SHA384_DIGEST_SIZE) 2058 updated_digestsize = SHA512_DIGEST_SIZE; 2059 err = chcr_compute_partial_hash(shash, hmacctx->ipad, 2060 hmacctx->ipad, digestsize); 2061 if (err) 2062 goto out; 2063 chcr_change_order(hmacctx->ipad, updated_digestsize); 2064 2065 err = chcr_compute_partial_hash(shash, hmacctx->opad, 2066 hmacctx->opad, digestsize); 2067 if (err) 2068 goto out; 2069 chcr_change_order(hmacctx->opad, updated_digestsize); 2070 out: 2071 return err; 2072 } 2073 2074 static int chcr_aes_xts_setkey(struct crypto_ablkcipher *cipher, const u8 *key, 2075 unsigned int key_len) 2076 { 2077 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher)); 2078 unsigned short context_size = 0; 2079 int err; 2080 2081 err = chcr_cipher_fallback_setkey(cipher, key, key_len); 2082 if (err) 2083 goto badkey_err; 2084 2085 memcpy(ablkctx->key, key, key_len); 2086 ablkctx->enckey_len = key_len; 2087 get_aes_decrypt_key(ablkctx->rrkey, ablkctx->key, key_len << 2); 2088 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD + key_len) >> 4; 2089 ablkctx->key_ctx_hdr = 2090 FILL_KEY_CTX_HDR((key_len == AES_KEYSIZE_256) ? 2091 CHCR_KEYCTX_CIPHER_KEY_SIZE_128 : 2092 CHCR_KEYCTX_CIPHER_KEY_SIZE_256, 2093 CHCR_KEYCTX_NO_KEY, 1, 2094 0, context_size); 2095 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_XTS; 2096 return 0; 2097 badkey_err: 2098 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN); 2099 ablkctx->enckey_len = 0; 2100 2101 return err; 2102 } 2103 2104 static int chcr_sha_init(struct ahash_request *areq) 2105 { 2106 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); 2107 struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq); 2108 int digestsize = crypto_ahash_digestsize(tfm); 2109 2110 req_ctx->data_len = 0; 2111 req_ctx->reqlen = 0; 2112 req_ctx->reqbfr = req_ctx->bfr1; 2113 req_ctx->skbfr = req_ctx->bfr2; 2114 copy_hash_init_values(req_ctx->partial_hash, digestsize); 2115 2116 return 0; 2117 } 2118 2119 static int chcr_sha_cra_init(struct crypto_tfm *tfm) 2120 { 2121 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), 2122 sizeof(struct chcr_ahash_req_ctx)); 2123 return chcr_device_init(crypto_tfm_ctx(tfm)); 2124 } 2125 2126 static int chcr_hmac_init(struct ahash_request *areq) 2127 { 2128 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); 2129 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(areq); 2130 struct hmac_ctx *hmacctx = HMAC_CTX(h_ctx(rtfm)); 2131 unsigned int digestsize = crypto_ahash_digestsize(rtfm); 2132 unsigned int bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm)); 2133 2134 chcr_sha_init(areq); 2135 req_ctx->data_len = bs; 2136 if (is_hmac(crypto_ahash_tfm(rtfm))) { 2137 if (digestsize == SHA224_DIGEST_SIZE) 2138 memcpy(req_ctx->partial_hash, hmacctx->ipad, 2139 SHA256_DIGEST_SIZE); 2140 else if (digestsize == SHA384_DIGEST_SIZE) 2141 memcpy(req_ctx->partial_hash, hmacctx->ipad, 2142 SHA512_DIGEST_SIZE); 2143 else 2144 memcpy(req_ctx->partial_hash, hmacctx->ipad, 2145 digestsize); 2146 } 2147 return 0; 2148 } 2149 2150 static int chcr_hmac_cra_init(struct crypto_tfm *tfm) 2151 { 2152 struct chcr_context *ctx = crypto_tfm_ctx(tfm); 2153 struct hmac_ctx *hmacctx = HMAC_CTX(ctx); 2154 unsigned int digestsize = 2155 crypto_ahash_digestsize(__crypto_ahash_cast(tfm)); 2156 2157 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), 2158 sizeof(struct chcr_ahash_req_ctx)); 2159 hmacctx->base_hash = chcr_alloc_shash(digestsize); 2160 if (IS_ERR(hmacctx->base_hash)) 2161 return PTR_ERR(hmacctx->base_hash); 2162 return chcr_device_init(crypto_tfm_ctx(tfm)); 2163 } 2164 2165 static void chcr_hmac_cra_exit(struct crypto_tfm *tfm) 2166 { 2167 struct chcr_context *ctx = crypto_tfm_ctx(tfm); 2168 struct hmac_ctx *hmacctx = HMAC_CTX(ctx); 2169 2170 if (hmacctx->base_hash) { 2171 chcr_free_shash(hmacctx->base_hash); 2172 hmacctx->base_hash = NULL; 2173 } 2174 } 2175 2176 inline void chcr_aead_common_exit(struct aead_request *req) 2177 { 2178 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); 2179 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 2180 struct uld_ctx *u_ctx = ULD_CTX(a_ctx(tfm)); 2181 2182 chcr_aead_dma_unmap(&u_ctx->lldi.pdev->dev, req, reqctx->op); 2183 } 2184 2185 static int chcr_aead_common_init(struct aead_request *req) 2186 { 2187 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 2188 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 2189 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); 2190 unsigned int authsize = crypto_aead_authsize(tfm); 2191 int error = -EINVAL; 2192 2193 /* validate key size */ 2194 if (aeadctx->enckey_len == 0) 2195 goto err; 2196 if (reqctx->op && req->cryptlen < authsize) 2197 goto err; 2198 if (reqctx->b0_len) 2199 reqctx->scratch_pad = reqctx->iv + IV; 2200 else 2201 reqctx->scratch_pad = NULL; 2202 2203 error = chcr_aead_dma_map(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev, req, 2204 reqctx->op); 2205 if (error) { 2206 error = -ENOMEM; 2207 goto err; 2208 } 2209 reqctx->aad_nents = sg_nents_xlen(req->src, req->assoclen, 2210 CHCR_SRC_SG_SIZE, 0); 2211 reqctx->src_nents = sg_nents_xlen(req->src, req->cryptlen, 2212 CHCR_SRC_SG_SIZE, req->assoclen); 2213 return 0; 2214 err: 2215 return error; 2216 } 2217 2218 static int chcr_aead_need_fallback(struct aead_request *req, int dst_nents, 2219 int aadmax, int wrlen, 2220 unsigned short op_type) 2221 { 2222 unsigned int authsize = crypto_aead_authsize(crypto_aead_reqtfm(req)); 2223 2224 if (((req->cryptlen - (op_type ? authsize : 0)) == 0) || 2225 dst_nents > MAX_DSGL_ENT || 2226 (req->assoclen > aadmax) || 2227 (wrlen > SGE_MAX_WR_LEN)) 2228 return 1; 2229 return 0; 2230 } 2231 2232 static int chcr_aead_fallback(struct aead_request *req, unsigned short op_type) 2233 { 2234 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 2235 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 2236 struct aead_request *subreq = aead_request_ctx(req); 2237 2238 aead_request_set_tfm(subreq, aeadctx->sw_cipher); 2239 aead_request_set_callback(subreq, req->base.flags, 2240 req->base.complete, req->base.data); 2241 aead_request_set_crypt(subreq, req->src, req->dst, req->cryptlen, 2242 req->iv); 2243 aead_request_set_ad(subreq, req->assoclen); 2244 return op_type ? crypto_aead_decrypt(subreq) : 2245 crypto_aead_encrypt(subreq); 2246 } 2247 2248 static struct sk_buff *create_authenc_wr(struct aead_request *req, 2249 unsigned short qid, 2250 int size) 2251 { 2252 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 2253 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 2254 struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx); 2255 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); 2256 struct sk_buff *skb = NULL; 2257 struct chcr_wr *chcr_req; 2258 struct cpl_rx_phys_dsgl *phys_cpl; 2259 struct ulptx_sgl *ulptx; 2260 unsigned int transhdr_len; 2261 unsigned int dst_size = 0, temp, subtype = get_aead_subtype(tfm); 2262 unsigned int kctx_len = 0, dnents; 2263 unsigned int assoclen = req->assoclen; 2264 unsigned int authsize = crypto_aead_authsize(tfm); 2265 int error = -EINVAL; 2266 int null = 0; 2267 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL : 2268 GFP_ATOMIC; 2269 struct adapter *adap = padap(a_ctx(tfm)->dev); 2270 2271 if (req->cryptlen == 0) 2272 return NULL; 2273 2274 reqctx->b0_len = 0; 2275 error = chcr_aead_common_init(req); 2276 if (error) 2277 return ERR_PTR(error); 2278 2279 if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL || 2280 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) { 2281 null = 1; 2282 assoclen = 0; 2283 reqctx->aad_nents = 0; 2284 } 2285 dnents = sg_nents_xlen(req->dst, assoclen, CHCR_DST_SG_SIZE, 0); 2286 dnents += sg_nents_xlen(req->dst, req->cryptlen + 2287 (reqctx->op ? -authsize : authsize), CHCR_DST_SG_SIZE, 2288 req->assoclen); 2289 dnents += MIN_AUTH_SG; // For IV 2290 2291 dst_size = get_space_for_phys_dsgl(dnents); 2292 kctx_len = (ntohl(KEY_CONTEXT_CTX_LEN_V(aeadctx->key_ctx_hdr)) << 4) 2293 - sizeof(chcr_req->key_ctx); 2294 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size); 2295 reqctx->imm = (transhdr_len + assoclen + IV + req->cryptlen) < 2296 SGE_MAX_WR_LEN; 2297 temp = reqctx->imm ? roundup(assoclen + IV + req->cryptlen, 16) 2298 : (sgl_len(reqctx->src_nents + reqctx->aad_nents 2299 + MIN_GCM_SG) * 8); 2300 transhdr_len += temp; 2301 transhdr_len = roundup(transhdr_len, 16); 2302 2303 if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE, 2304 transhdr_len, reqctx->op)) { 2305 atomic_inc(&adap->chcr_stats.fallback); 2306 chcr_aead_common_exit(req); 2307 return ERR_PTR(chcr_aead_fallback(req, reqctx->op)); 2308 } 2309 skb = alloc_skb(SGE_MAX_WR_LEN, flags); 2310 if (!skb) { 2311 error = -ENOMEM; 2312 goto err; 2313 } 2314 2315 chcr_req = __skb_put_zero(skb, transhdr_len); 2316 2317 temp = (reqctx->op == CHCR_ENCRYPT_OP) ? 0 : authsize; 2318 2319 /* 2320 * Input order is AAD,IV and Payload. where IV should be included as 2321 * the part of authdata. All other fields should be filled according 2322 * to the hardware spec 2323 */ 2324 chcr_req->sec_cpl.op_ivinsrtofst = 2325 FILL_SEC_CPL_OP_IVINSR(a_ctx(tfm)->dev->rx_channel_id, 2, 2326 assoclen + 1); 2327 chcr_req->sec_cpl.pldlen = htonl(assoclen + IV + req->cryptlen); 2328 chcr_req->sec_cpl.aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI( 2329 assoclen ? 1 : 0, assoclen, 2330 assoclen + IV + 1, 2331 (temp & 0x1F0) >> 4); 2332 chcr_req->sec_cpl.cipherstop_lo_authinsert = FILL_SEC_CPL_AUTHINSERT( 2333 temp & 0xF, 2334 null ? 0 : assoclen + IV + 1, 2335 temp, temp); 2336 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL || 2337 subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA) 2338 temp = CHCR_SCMD_CIPHER_MODE_AES_CTR; 2339 else 2340 temp = CHCR_SCMD_CIPHER_MODE_AES_CBC; 2341 chcr_req->sec_cpl.seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(reqctx->op, 2342 (reqctx->op == CHCR_ENCRYPT_OP) ? 1 : 0, 2343 temp, 2344 actx->auth_mode, aeadctx->hmac_ctrl, 2345 IV >> 1); 2346 chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1, 2347 0, 0, dst_size); 2348 2349 chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr; 2350 if (reqctx->op == CHCR_ENCRYPT_OP || 2351 subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA || 2352 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) 2353 memcpy(chcr_req->key_ctx.key, aeadctx->key, 2354 aeadctx->enckey_len); 2355 else 2356 memcpy(chcr_req->key_ctx.key, actx->dec_rrkey, 2357 aeadctx->enckey_len); 2358 2359 memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16), 2360 actx->h_iopad, kctx_len - roundup(aeadctx->enckey_len, 16)); 2361 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA || 2362 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) { 2363 memcpy(reqctx->iv, aeadctx->nonce, CTR_RFC3686_NONCE_SIZE); 2364 memcpy(reqctx->iv + CTR_RFC3686_NONCE_SIZE, req->iv, 2365 CTR_RFC3686_IV_SIZE); 2366 *(__be32 *)(reqctx->iv + CTR_RFC3686_NONCE_SIZE + 2367 CTR_RFC3686_IV_SIZE) = cpu_to_be32(1); 2368 } else { 2369 memcpy(reqctx->iv, req->iv, IV); 2370 } 2371 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len); 2372 ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size); 2373 chcr_add_aead_dst_ent(req, phys_cpl, assoclen, qid); 2374 chcr_add_aead_src_ent(req, ulptx, assoclen); 2375 atomic_inc(&adap->chcr_stats.cipher_rqst); 2376 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + 2377 kctx_len + (reqctx->imm ? (assoclen + IV + req->cryptlen) : 0); 2378 create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, size, 2379 transhdr_len, temp, 0); 2380 reqctx->skb = skb; 2381 2382 return skb; 2383 err: 2384 chcr_aead_common_exit(req); 2385 2386 return ERR_PTR(error); 2387 } 2388 2389 int chcr_aead_dma_map(struct device *dev, 2390 struct aead_request *req, 2391 unsigned short op_type) 2392 { 2393 int error; 2394 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); 2395 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 2396 unsigned int authsize = crypto_aead_authsize(tfm); 2397 int dst_size; 2398 2399 dst_size = req->assoclen + req->cryptlen + (op_type ? 2400 -authsize : authsize); 2401 if (!req->cryptlen || !dst_size) 2402 return 0; 2403 reqctx->iv_dma = dma_map_single(dev, reqctx->iv, (IV + reqctx->b0_len), 2404 DMA_BIDIRECTIONAL); 2405 if (dma_mapping_error(dev, reqctx->iv_dma)) 2406 return -ENOMEM; 2407 if (reqctx->b0_len) 2408 reqctx->b0_dma = reqctx->iv_dma + IV; 2409 else 2410 reqctx->b0_dma = 0; 2411 if (req->src == req->dst) { 2412 error = dma_map_sg(dev, req->src, sg_nents(req->src), 2413 DMA_BIDIRECTIONAL); 2414 if (!error) 2415 goto err; 2416 } else { 2417 error = dma_map_sg(dev, req->src, sg_nents(req->src), 2418 DMA_TO_DEVICE); 2419 if (!error) 2420 goto err; 2421 error = dma_map_sg(dev, req->dst, sg_nents(req->dst), 2422 DMA_FROM_DEVICE); 2423 if (!error) { 2424 dma_unmap_sg(dev, req->src, sg_nents(req->src), 2425 DMA_TO_DEVICE); 2426 goto err; 2427 } 2428 } 2429 2430 return 0; 2431 err: 2432 dma_unmap_single(dev, reqctx->iv_dma, IV, DMA_BIDIRECTIONAL); 2433 return -ENOMEM; 2434 } 2435 2436 void chcr_aead_dma_unmap(struct device *dev, 2437 struct aead_request *req, 2438 unsigned short op_type) 2439 { 2440 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); 2441 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 2442 unsigned int authsize = crypto_aead_authsize(tfm); 2443 int dst_size; 2444 2445 dst_size = req->assoclen + req->cryptlen + (op_type ? 2446 -authsize : authsize); 2447 if (!req->cryptlen || !dst_size) 2448 return; 2449 2450 dma_unmap_single(dev, reqctx->iv_dma, (IV + reqctx->b0_len), 2451 DMA_BIDIRECTIONAL); 2452 if (req->src == req->dst) { 2453 dma_unmap_sg(dev, req->src, sg_nents(req->src), 2454 DMA_BIDIRECTIONAL); 2455 } else { 2456 dma_unmap_sg(dev, req->src, sg_nents(req->src), 2457 DMA_TO_DEVICE); 2458 dma_unmap_sg(dev, req->dst, sg_nents(req->dst), 2459 DMA_FROM_DEVICE); 2460 } 2461 } 2462 2463 void chcr_add_aead_src_ent(struct aead_request *req, 2464 struct ulptx_sgl *ulptx, 2465 unsigned int assoclen) 2466 { 2467 struct ulptx_walk ulp_walk; 2468 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); 2469 2470 if (reqctx->imm) { 2471 u8 *buf = (u8 *)ulptx; 2472 2473 if (reqctx->b0_len) { 2474 memcpy(buf, reqctx->scratch_pad, reqctx->b0_len); 2475 buf += reqctx->b0_len; 2476 } 2477 sg_pcopy_to_buffer(req->src, sg_nents(req->src), 2478 buf, assoclen, 0); 2479 buf += assoclen; 2480 memcpy(buf, reqctx->iv, IV); 2481 buf += IV; 2482 sg_pcopy_to_buffer(req->src, sg_nents(req->src), 2483 buf, req->cryptlen, req->assoclen); 2484 } else { 2485 ulptx_walk_init(&ulp_walk, ulptx); 2486 if (reqctx->b0_len) 2487 ulptx_walk_add_page(&ulp_walk, reqctx->b0_len, 2488 &reqctx->b0_dma); 2489 ulptx_walk_add_sg(&ulp_walk, req->src, assoclen, 0); 2490 ulptx_walk_add_page(&ulp_walk, IV, &reqctx->iv_dma); 2491 ulptx_walk_add_sg(&ulp_walk, req->src, req->cryptlen, 2492 req->assoclen); 2493 ulptx_walk_end(&ulp_walk); 2494 } 2495 } 2496 2497 void chcr_add_aead_dst_ent(struct aead_request *req, 2498 struct cpl_rx_phys_dsgl *phys_cpl, 2499 unsigned int assoclen, 2500 unsigned short qid) 2501 { 2502 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); 2503 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 2504 struct dsgl_walk dsgl_walk; 2505 unsigned int authsize = crypto_aead_authsize(tfm); 2506 u32 temp; 2507 2508 dsgl_walk_init(&dsgl_walk, phys_cpl); 2509 if (reqctx->b0_len) 2510 dsgl_walk_add_page(&dsgl_walk, reqctx->b0_len, &reqctx->b0_dma); 2511 dsgl_walk_add_sg(&dsgl_walk, req->dst, assoclen, 0); 2512 dsgl_walk_add_page(&dsgl_walk, IV, &reqctx->iv_dma); 2513 temp = req->cryptlen + (reqctx->op ? -authsize : authsize); 2514 dsgl_walk_add_sg(&dsgl_walk, req->dst, temp, req->assoclen); 2515 dsgl_walk_end(&dsgl_walk, qid); 2516 } 2517 2518 void chcr_add_cipher_src_ent(struct ablkcipher_request *req, 2519 void *ulptx, 2520 struct cipher_wr_param *wrparam) 2521 { 2522 struct ulptx_walk ulp_walk; 2523 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req); 2524 u8 *buf = ulptx; 2525 2526 memcpy(buf, reqctx->iv, IV); 2527 buf += IV; 2528 if (reqctx->imm) { 2529 sg_pcopy_to_buffer(req->src, sg_nents(req->src), 2530 buf, wrparam->bytes, reqctx->processed); 2531 } else { 2532 ulptx_walk_init(&ulp_walk, (struct ulptx_sgl *)buf); 2533 ulptx_walk_add_sg(&ulp_walk, reqctx->srcsg, wrparam->bytes, 2534 reqctx->src_ofst); 2535 reqctx->srcsg = ulp_walk.last_sg; 2536 reqctx->src_ofst = ulp_walk.last_sg_len; 2537 ulptx_walk_end(&ulp_walk); 2538 } 2539 } 2540 2541 void chcr_add_cipher_dst_ent(struct ablkcipher_request *req, 2542 struct cpl_rx_phys_dsgl *phys_cpl, 2543 struct cipher_wr_param *wrparam, 2544 unsigned short qid) 2545 { 2546 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req); 2547 struct dsgl_walk dsgl_walk; 2548 2549 dsgl_walk_init(&dsgl_walk, phys_cpl); 2550 dsgl_walk_add_sg(&dsgl_walk, reqctx->dstsg, wrparam->bytes, 2551 reqctx->dst_ofst); 2552 reqctx->dstsg = dsgl_walk.last_sg; 2553 reqctx->dst_ofst = dsgl_walk.last_sg_len; 2554 2555 dsgl_walk_end(&dsgl_walk, qid); 2556 } 2557 2558 void chcr_add_hash_src_ent(struct ahash_request *req, 2559 struct ulptx_sgl *ulptx, 2560 struct hash_wr_param *param) 2561 { 2562 struct ulptx_walk ulp_walk; 2563 struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req); 2564 2565 if (reqctx->hctx_wr.imm) { 2566 u8 *buf = (u8 *)ulptx; 2567 2568 if (param->bfr_len) { 2569 memcpy(buf, reqctx->reqbfr, param->bfr_len); 2570 buf += param->bfr_len; 2571 } 2572 2573 sg_pcopy_to_buffer(reqctx->hctx_wr.srcsg, 2574 sg_nents(reqctx->hctx_wr.srcsg), buf, 2575 param->sg_len, 0); 2576 } else { 2577 ulptx_walk_init(&ulp_walk, ulptx); 2578 if (param->bfr_len) 2579 ulptx_walk_add_page(&ulp_walk, param->bfr_len, 2580 &reqctx->hctx_wr.dma_addr); 2581 ulptx_walk_add_sg(&ulp_walk, reqctx->hctx_wr.srcsg, 2582 param->sg_len, reqctx->hctx_wr.src_ofst); 2583 reqctx->hctx_wr.srcsg = ulp_walk.last_sg; 2584 reqctx->hctx_wr.src_ofst = ulp_walk.last_sg_len; 2585 ulptx_walk_end(&ulp_walk); 2586 } 2587 } 2588 2589 int chcr_hash_dma_map(struct device *dev, 2590 struct ahash_request *req) 2591 { 2592 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req); 2593 int error = 0; 2594 2595 if (!req->nbytes) 2596 return 0; 2597 error = dma_map_sg(dev, req->src, sg_nents(req->src), 2598 DMA_TO_DEVICE); 2599 if (!error) 2600 return -ENOMEM; 2601 req_ctx->hctx_wr.is_sg_map = 1; 2602 return 0; 2603 } 2604 2605 void chcr_hash_dma_unmap(struct device *dev, 2606 struct ahash_request *req) 2607 { 2608 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req); 2609 2610 if (!req->nbytes) 2611 return; 2612 2613 dma_unmap_sg(dev, req->src, sg_nents(req->src), 2614 DMA_TO_DEVICE); 2615 req_ctx->hctx_wr.is_sg_map = 0; 2616 2617 } 2618 2619 int chcr_cipher_dma_map(struct device *dev, 2620 struct ablkcipher_request *req) 2621 { 2622 int error; 2623 2624 if (req->src == req->dst) { 2625 error = dma_map_sg(dev, req->src, sg_nents(req->src), 2626 DMA_BIDIRECTIONAL); 2627 if (!error) 2628 goto err; 2629 } else { 2630 error = dma_map_sg(dev, req->src, sg_nents(req->src), 2631 DMA_TO_DEVICE); 2632 if (!error) 2633 goto err; 2634 error = dma_map_sg(dev, req->dst, sg_nents(req->dst), 2635 DMA_FROM_DEVICE); 2636 if (!error) { 2637 dma_unmap_sg(dev, req->src, sg_nents(req->src), 2638 DMA_TO_DEVICE); 2639 goto err; 2640 } 2641 } 2642 2643 return 0; 2644 err: 2645 return -ENOMEM; 2646 } 2647 2648 void chcr_cipher_dma_unmap(struct device *dev, 2649 struct ablkcipher_request *req) 2650 { 2651 if (req->src == req->dst) { 2652 dma_unmap_sg(dev, req->src, sg_nents(req->src), 2653 DMA_BIDIRECTIONAL); 2654 } else { 2655 dma_unmap_sg(dev, req->src, sg_nents(req->src), 2656 DMA_TO_DEVICE); 2657 dma_unmap_sg(dev, req->dst, sg_nents(req->dst), 2658 DMA_FROM_DEVICE); 2659 } 2660 } 2661 2662 static int set_msg_len(u8 *block, unsigned int msglen, int csize) 2663 { 2664 __be32 data; 2665 2666 memset(block, 0, csize); 2667 block += csize; 2668 2669 if (csize >= 4) 2670 csize = 4; 2671 else if (msglen > (unsigned int)(1 << (8 * csize))) 2672 return -EOVERFLOW; 2673 2674 data = cpu_to_be32(msglen); 2675 memcpy(block - csize, (u8 *)&data + 4 - csize, csize); 2676 2677 return 0; 2678 } 2679 2680 static void generate_b0(struct aead_request *req, 2681 struct chcr_aead_ctx *aeadctx, 2682 unsigned short op_type) 2683 { 2684 unsigned int l, lp, m; 2685 int rc; 2686 struct crypto_aead *aead = crypto_aead_reqtfm(req); 2687 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); 2688 u8 *b0 = reqctx->scratch_pad; 2689 2690 m = crypto_aead_authsize(aead); 2691 2692 memcpy(b0, reqctx->iv, 16); 2693 2694 lp = b0[0]; 2695 l = lp + 1; 2696 2697 /* set m, bits 3-5 */ 2698 *b0 |= (8 * ((m - 2) / 2)); 2699 2700 /* set adata, bit 6, if associated data is used */ 2701 if (req->assoclen) 2702 *b0 |= 64; 2703 rc = set_msg_len(b0 + 16 - l, 2704 (op_type == CHCR_DECRYPT_OP) ? 2705 req->cryptlen - m : req->cryptlen, l); 2706 } 2707 2708 static inline int crypto_ccm_check_iv(const u8 *iv) 2709 { 2710 /* 2 <= L <= 8, so 1 <= L' <= 7. */ 2711 if (iv[0] < 1 || iv[0] > 7) 2712 return -EINVAL; 2713 2714 return 0; 2715 } 2716 2717 static int ccm_format_packet(struct aead_request *req, 2718 struct chcr_aead_ctx *aeadctx, 2719 unsigned int sub_type, 2720 unsigned short op_type, 2721 unsigned int assoclen) 2722 { 2723 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); 2724 int rc = 0; 2725 2726 if (sub_type == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) { 2727 reqctx->iv[0] = 3; 2728 memcpy(reqctx->iv + 1, &aeadctx->salt[0], 3); 2729 memcpy(reqctx->iv + 4, req->iv, 8); 2730 memset(reqctx->iv + 12, 0, 4); 2731 } else { 2732 memcpy(reqctx->iv, req->iv, 16); 2733 } 2734 if (assoclen) 2735 *((unsigned short *)(reqctx->scratch_pad + 16)) = 2736 htons(assoclen); 2737 2738 generate_b0(req, aeadctx, op_type); 2739 /* zero the ctr value */ 2740 memset(reqctx->iv + 15 - reqctx->iv[0], 0, reqctx->iv[0] + 1); 2741 return rc; 2742 } 2743 2744 static void fill_sec_cpl_for_aead(struct cpl_tx_sec_pdu *sec_cpl, 2745 unsigned int dst_size, 2746 struct aead_request *req, 2747 unsigned short op_type) 2748 { 2749 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 2750 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 2751 unsigned int cipher_mode = CHCR_SCMD_CIPHER_MODE_AES_CCM; 2752 unsigned int mac_mode = CHCR_SCMD_AUTH_MODE_CBCMAC; 2753 unsigned int c_id = a_ctx(tfm)->dev->rx_channel_id; 2754 unsigned int ccm_xtra; 2755 unsigned char tag_offset = 0, auth_offset = 0; 2756 unsigned int assoclen; 2757 2758 if (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) 2759 assoclen = req->assoclen - 8; 2760 else 2761 assoclen = req->assoclen; 2762 ccm_xtra = CCM_B0_SIZE + 2763 ((assoclen) ? CCM_AAD_FIELD_SIZE : 0); 2764 2765 auth_offset = req->cryptlen ? 2766 (assoclen + IV + 1 + ccm_xtra) : 0; 2767 if (op_type == CHCR_DECRYPT_OP) { 2768 if (crypto_aead_authsize(tfm) != req->cryptlen) 2769 tag_offset = crypto_aead_authsize(tfm); 2770 else 2771 auth_offset = 0; 2772 } 2773 2774 2775 sec_cpl->op_ivinsrtofst = FILL_SEC_CPL_OP_IVINSR(c_id, 2776 2, assoclen + 1 + ccm_xtra); 2777 sec_cpl->pldlen = 2778 htonl(assoclen + IV + req->cryptlen + ccm_xtra); 2779 /* For CCM there wil be b0 always. So AAD start will be 1 always */ 2780 sec_cpl->aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI( 2781 1, assoclen + ccm_xtra, assoclen 2782 + IV + 1 + ccm_xtra, 0); 2783 2784 sec_cpl->cipherstop_lo_authinsert = FILL_SEC_CPL_AUTHINSERT(0, 2785 auth_offset, tag_offset, 2786 (op_type == CHCR_ENCRYPT_OP) ? 0 : 2787 crypto_aead_authsize(tfm)); 2788 sec_cpl->seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(op_type, 2789 (op_type == CHCR_ENCRYPT_OP) ? 0 : 1, 2790 cipher_mode, mac_mode, 2791 aeadctx->hmac_ctrl, IV >> 1); 2792 2793 sec_cpl->ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1, 0, 2794 0, dst_size); 2795 } 2796 2797 static int aead_ccm_validate_input(unsigned short op_type, 2798 struct aead_request *req, 2799 struct chcr_aead_ctx *aeadctx, 2800 unsigned int sub_type) 2801 { 2802 if (sub_type != CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) { 2803 if (crypto_ccm_check_iv(req->iv)) { 2804 pr_err("CCM: IV check fails\n"); 2805 return -EINVAL; 2806 } 2807 } else { 2808 if (req->assoclen != 16 && req->assoclen != 20) { 2809 pr_err("RFC4309: Invalid AAD length %d\n", 2810 req->assoclen); 2811 return -EINVAL; 2812 } 2813 } 2814 return 0; 2815 } 2816 2817 static struct sk_buff *create_aead_ccm_wr(struct aead_request *req, 2818 unsigned short qid, 2819 int size) 2820 { 2821 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 2822 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 2823 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); 2824 struct sk_buff *skb = NULL; 2825 struct chcr_wr *chcr_req; 2826 struct cpl_rx_phys_dsgl *phys_cpl; 2827 struct ulptx_sgl *ulptx; 2828 unsigned int transhdr_len; 2829 unsigned int dst_size = 0, kctx_len, dnents, temp; 2830 unsigned int sub_type, assoclen = req->assoclen; 2831 unsigned int authsize = crypto_aead_authsize(tfm); 2832 int error = -EINVAL; 2833 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL : 2834 GFP_ATOMIC; 2835 struct adapter *adap = padap(a_ctx(tfm)->dev); 2836 2837 sub_type = get_aead_subtype(tfm); 2838 if (sub_type == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) 2839 assoclen -= 8; 2840 reqctx->b0_len = CCM_B0_SIZE + (assoclen ? CCM_AAD_FIELD_SIZE : 0); 2841 error = chcr_aead_common_init(req); 2842 if (error) 2843 return ERR_PTR(error); 2844 2845 error = aead_ccm_validate_input(reqctx->op, req, aeadctx, sub_type); 2846 if (error) 2847 goto err; 2848 dnents = sg_nents_xlen(req->dst, assoclen, CHCR_DST_SG_SIZE, 0); 2849 dnents += sg_nents_xlen(req->dst, req->cryptlen 2850 + (reqctx->op ? -authsize : authsize), 2851 CHCR_DST_SG_SIZE, req->assoclen); 2852 dnents += MIN_CCM_SG; // For IV and B0 2853 dst_size = get_space_for_phys_dsgl(dnents); 2854 kctx_len = roundup(aeadctx->enckey_len, 16) * 2; 2855 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size); 2856 reqctx->imm = (transhdr_len + assoclen + IV + req->cryptlen + 2857 reqctx->b0_len) <= SGE_MAX_WR_LEN; 2858 temp = reqctx->imm ? roundup(assoclen + IV + req->cryptlen + 2859 reqctx->b0_len, 16) : 2860 (sgl_len(reqctx->src_nents + reqctx->aad_nents + 2861 MIN_CCM_SG) * 8); 2862 transhdr_len += temp; 2863 transhdr_len = roundup(transhdr_len, 16); 2864 2865 if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE - 2866 reqctx->b0_len, transhdr_len, reqctx->op)) { 2867 atomic_inc(&adap->chcr_stats.fallback); 2868 chcr_aead_common_exit(req); 2869 return ERR_PTR(chcr_aead_fallback(req, reqctx->op)); 2870 } 2871 skb = alloc_skb(SGE_MAX_WR_LEN, flags); 2872 2873 if (!skb) { 2874 error = -ENOMEM; 2875 goto err; 2876 } 2877 2878 chcr_req = (struct chcr_wr *) __skb_put_zero(skb, transhdr_len); 2879 2880 fill_sec_cpl_for_aead(&chcr_req->sec_cpl, dst_size, req, reqctx->op); 2881 2882 chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr; 2883 memcpy(chcr_req->key_ctx.key, aeadctx->key, aeadctx->enckey_len); 2884 memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16), 2885 aeadctx->key, aeadctx->enckey_len); 2886 2887 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len); 2888 ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size); 2889 error = ccm_format_packet(req, aeadctx, sub_type, reqctx->op, assoclen); 2890 if (error) 2891 goto dstmap_fail; 2892 chcr_add_aead_dst_ent(req, phys_cpl, assoclen, qid); 2893 chcr_add_aead_src_ent(req, ulptx, assoclen); 2894 2895 atomic_inc(&adap->chcr_stats.aead_rqst); 2896 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + 2897 kctx_len + (reqctx->imm ? (assoclen + IV + req->cryptlen + 2898 reqctx->b0_len) : 0); 2899 create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, 0, 2900 transhdr_len, temp, 0); 2901 reqctx->skb = skb; 2902 2903 return skb; 2904 dstmap_fail: 2905 kfree_skb(skb); 2906 err: 2907 chcr_aead_common_exit(req); 2908 return ERR_PTR(error); 2909 } 2910 2911 static struct sk_buff *create_gcm_wr(struct aead_request *req, 2912 unsigned short qid, 2913 int size) 2914 { 2915 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 2916 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 2917 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); 2918 struct sk_buff *skb = NULL; 2919 struct chcr_wr *chcr_req; 2920 struct cpl_rx_phys_dsgl *phys_cpl; 2921 struct ulptx_sgl *ulptx; 2922 unsigned int transhdr_len, dnents = 0; 2923 unsigned int dst_size = 0, temp = 0, kctx_len, assoclen = req->assoclen; 2924 unsigned int authsize = crypto_aead_authsize(tfm); 2925 int error = -EINVAL; 2926 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL : 2927 GFP_ATOMIC; 2928 struct adapter *adap = padap(a_ctx(tfm)->dev); 2929 2930 if (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106) 2931 assoclen = req->assoclen - 8; 2932 2933 reqctx->b0_len = 0; 2934 error = chcr_aead_common_init(req); 2935 if (error) 2936 return ERR_PTR(error); 2937 dnents = sg_nents_xlen(req->dst, assoclen, CHCR_DST_SG_SIZE, 0); 2938 dnents += sg_nents_xlen(req->dst, req->cryptlen + 2939 (reqctx->op ? -authsize : authsize), 2940 CHCR_DST_SG_SIZE, req->assoclen); 2941 dnents += MIN_GCM_SG; // For IV 2942 dst_size = get_space_for_phys_dsgl(dnents); 2943 kctx_len = roundup(aeadctx->enckey_len, 16) + AEAD_H_SIZE; 2944 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size); 2945 reqctx->imm = (transhdr_len + assoclen + IV + req->cryptlen) <= 2946 SGE_MAX_WR_LEN; 2947 temp = reqctx->imm ? roundup(assoclen + IV + req->cryptlen, 16) : 2948 (sgl_len(reqctx->src_nents + 2949 reqctx->aad_nents + MIN_GCM_SG) * 8); 2950 transhdr_len += temp; 2951 transhdr_len = roundup(transhdr_len, 16); 2952 if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE, 2953 transhdr_len, reqctx->op)) { 2954 2955 atomic_inc(&adap->chcr_stats.fallback); 2956 chcr_aead_common_exit(req); 2957 return ERR_PTR(chcr_aead_fallback(req, reqctx->op)); 2958 } 2959 skb = alloc_skb(SGE_MAX_WR_LEN, flags); 2960 if (!skb) { 2961 error = -ENOMEM; 2962 goto err; 2963 } 2964 2965 chcr_req = __skb_put_zero(skb, transhdr_len); 2966 2967 //Offset of tag from end 2968 temp = (reqctx->op == CHCR_ENCRYPT_OP) ? 0 : authsize; 2969 chcr_req->sec_cpl.op_ivinsrtofst = FILL_SEC_CPL_OP_IVINSR( 2970 a_ctx(tfm)->dev->rx_channel_id, 2, 2971 (assoclen + 1)); 2972 chcr_req->sec_cpl.pldlen = 2973 htonl(assoclen + IV + req->cryptlen); 2974 chcr_req->sec_cpl.aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI( 2975 assoclen ? 1 : 0, assoclen, 2976 assoclen + IV + 1, 0); 2977 chcr_req->sec_cpl.cipherstop_lo_authinsert = 2978 FILL_SEC_CPL_AUTHINSERT(0, assoclen + IV + 1, 2979 temp, temp); 2980 chcr_req->sec_cpl.seqno_numivs = 2981 FILL_SEC_CPL_SCMD0_SEQNO(reqctx->op, (reqctx->op == 2982 CHCR_ENCRYPT_OP) ? 1 : 0, 2983 CHCR_SCMD_CIPHER_MODE_AES_GCM, 2984 CHCR_SCMD_AUTH_MODE_GHASH, 2985 aeadctx->hmac_ctrl, IV >> 1); 2986 chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1, 2987 0, 0, dst_size); 2988 chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr; 2989 memcpy(chcr_req->key_ctx.key, aeadctx->key, aeadctx->enckey_len); 2990 memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16), 2991 GCM_CTX(aeadctx)->ghash_h, AEAD_H_SIZE); 2992 2993 /* prepare a 16 byte iv */ 2994 /* S A L T | IV | 0x00000001 */ 2995 if (get_aead_subtype(tfm) == 2996 CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106) { 2997 memcpy(reqctx->iv, aeadctx->salt, 4); 2998 memcpy(reqctx->iv + 4, req->iv, GCM_RFC4106_IV_SIZE); 2999 } else { 3000 memcpy(reqctx->iv, req->iv, GCM_AES_IV_SIZE); 3001 } 3002 *((unsigned int *)(reqctx->iv + 12)) = htonl(0x01); 3003 3004 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len); 3005 ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size); 3006 3007 chcr_add_aead_dst_ent(req, phys_cpl, assoclen, qid); 3008 chcr_add_aead_src_ent(req, ulptx, assoclen); 3009 atomic_inc(&adap->chcr_stats.aead_rqst); 3010 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + 3011 kctx_len + (reqctx->imm ? (assoclen + IV + req->cryptlen) : 0); 3012 create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, size, 3013 transhdr_len, temp, reqctx->verify); 3014 reqctx->skb = skb; 3015 return skb; 3016 3017 err: 3018 chcr_aead_common_exit(req); 3019 return ERR_PTR(error); 3020 } 3021 3022 3023 3024 static int chcr_aead_cra_init(struct crypto_aead *tfm) 3025 { 3026 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 3027 struct aead_alg *alg = crypto_aead_alg(tfm); 3028 3029 aeadctx->sw_cipher = crypto_alloc_aead(alg->base.cra_name, 0, 3030 CRYPTO_ALG_NEED_FALLBACK | 3031 CRYPTO_ALG_ASYNC); 3032 if (IS_ERR(aeadctx->sw_cipher)) 3033 return PTR_ERR(aeadctx->sw_cipher); 3034 crypto_aead_set_reqsize(tfm, max(sizeof(struct chcr_aead_reqctx), 3035 sizeof(struct aead_request) + 3036 crypto_aead_reqsize(aeadctx->sw_cipher))); 3037 return chcr_device_init(a_ctx(tfm)); 3038 } 3039 3040 static void chcr_aead_cra_exit(struct crypto_aead *tfm) 3041 { 3042 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 3043 3044 crypto_free_aead(aeadctx->sw_cipher); 3045 } 3046 3047 static int chcr_authenc_null_setauthsize(struct crypto_aead *tfm, 3048 unsigned int authsize) 3049 { 3050 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 3051 3052 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NOP; 3053 aeadctx->mayverify = VERIFY_HW; 3054 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize); 3055 } 3056 static int chcr_authenc_setauthsize(struct crypto_aead *tfm, 3057 unsigned int authsize) 3058 { 3059 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 3060 u32 maxauth = crypto_aead_maxauthsize(tfm); 3061 3062 /*SHA1 authsize in ipsec is 12 instead of 10 i.e maxauthsize / 2 is not 3063 * true for sha1. authsize == 12 condition should be before 3064 * authsize == (maxauth >> 1) 3065 */ 3066 if (authsize == ICV_4) { 3067 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1; 3068 aeadctx->mayverify = VERIFY_HW; 3069 } else if (authsize == ICV_6) { 3070 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL2; 3071 aeadctx->mayverify = VERIFY_HW; 3072 } else if (authsize == ICV_10) { 3073 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_TRUNC_RFC4366; 3074 aeadctx->mayverify = VERIFY_HW; 3075 } else if (authsize == ICV_12) { 3076 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT; 3077 aeadctx->mayverify = VERIFY_HW; 3078 } else if (authsize == ICV_14) { 3079 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3; 3080 aeadctx->mayverify = VERIFY_HW; 3081 } else if (authsize == (maxauth >> 1)) { 3082 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2; 3083 aeadctx->mayverify = VERIFY_HW; 3084 } else if (authsize == maxauth) { 3085 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC; 3086 aeadctx->mayverify = VERIFY_HW; 3087 } else { 3088 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC; 3089 aeadctx->mayverify = VERIFY_SW; 3090 } 3091 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize); 3092 } 3093 3094 3095 static int chcr_gcm_setauthsize(struct crypto_aead *tfm, unsigned int authsize) 3096 { 3097 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 3098 3099 switch (authsize) { 3100 case ICV_4: 3101 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1; 3102 aeadctx->mayverify = VERIFY_HW; 3103 break; 3104 case ICV_8: 3105 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2; 3106 aeadctx->mayverify = VERIFY_HW; 3107 break; 3108 case ICV_12: 3109 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT; 3110 aeadctx->mayverify = VERIFY_HW; 3111 break; 3112 case ICV_14: 3113 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3; 3114 aeadctx->mayverify = VERIFY_HW; 3115 break; 3116 case ICV_16: 3117 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC; 3118 aeadctx->mayverify = VERIFY_HW; 3119 break; 3120 case ICV_13: 3121 case ICV_15: 3122 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC; 3123 aeadctx->mayverify = VERIFY_SW; 3124 break; 3125 default: 3126 3127 crypto_tfm_set_flags((struct crypto_tfm *) tfm, 3128 CRYPTO_TFM_RES_BAD_KEY_LEN); 3129 return -EINVAL; 3130 } 3131 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize); 3132 } 3133 3134 static int chcr_4106_4309_setauthsize(struct crypto_aead *tfm, 3135 unsigned int authsize) 3136 { 3137 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 3138 3139 switch (authsize) { 3140 case ICV_8: 3141 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2; 3142 aeadctx->mayverify = VERIFY_HW; 3143 break; 3144 case ICV_12: 3145 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT; 3146 aeadctx->mayverify = VERIFY_HW; 3147 break; 3148 case ICV_16: 3149 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC; 3150 aeadctx->mayverify = VERIFY_HW; 3151 break; 3152 default: 3153 crypto_tfm_set_flags((struct crypto_tfm *)tfm, 3154 CRYPTO_TFM_RES_BAD_KEY_LEN); 3155 return -EINVAL; 3156 } 3157 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize); 3158 } 3159 3160 static int chcr_ccm_setauthsize(struct crypto_aead *tfm, 3161 unsigned int authsize) 3162 { 3163 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 3164 3165 switch (authsize) { 3166 case ICV_4: 3167 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1; 3168 aeadctx->mayverify = VERIFY_HW; 3169 break; 3170 case ICV_6: 3171 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL2; 3172 aeadctx->mayverify = VERIFY_HW; 3173 break; 3174 case ICV_8: 3175 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2; 3176 aeadctx->mayverify = VERIFY_HW; 3177 break; 3178 case ICV_10: 3179 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_TRUNC_RFC4366; 3180 aeadctx->mayverify = VERIFY_HW; 3181 break; 3182 case ICV_12: 3183 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT; 3184 aeadctx->mayverify = VERIFY_HW; 3185 break; 3186 case ICV_14: 3187 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3; 3188 aeadctx->mayverify = VERIFY_HW; 3189 break; 3190 case ICV_16: 3191 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC; 3192 aeadctx->mayverify = VERIFY_HW; 3193 break; 3194 default: 3195 crypto_tfm_set_flags((struct crypto_tfm *)tfm, 3196 CRYPTO_TFM_RES_BAD_KEY_LEN); 3197 return -EINVAL; 3198 } 3199 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize); 3200 } 3201 3202 static int chcr_ccm_common_setkey(struct crypto_aead *aead, 3203 const u8 *key, 3204 unsigned int keylen) 3205 { 3206 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead)); 3207 unsigned char ck_size, mk_size; 3208 int key_ctx_size = 0; 3209 3210 key_ctx_size = sizeof(struct _key_ctx) + roundup(keylen, 16) * 2; 3211 if (keylen == AES_KEYSIZE_128) { 3212 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128; 3213 mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_128; 3214 } else if (keylen == AES_KEYSIZE_192) { 3215 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192; 3216 mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_192; 3217 } else if (keylen == AES_KEYSIZE_256) { 3218 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256; 3219 mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256; 3220 } else { 3221 crypto_tfm_set_flags((struct crypto_tfm *)aead, 3222 CRYPTO_TFM_RES_BAD_KEY_LEN); 3223 aeadctx->enckey_len = 0; 3224 return -EINVAL; 3225 } 3226 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, mk_size, 0, 0, 3227 key_ctx_size >> 4); 3228 memcpy(aeadctx->key, key, keylen); 3229 aeadctx->enckey_len = keylen; 3230 3231 return 0; 3232 } 3233 3234 static int chcr_aead_ccm_setkey(struct crypto_aead *aead, 3235 const u8 *key, 3236 unsigned int keylen) 3237 { 3238 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead)); 3239 int error; 3240 3241 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK); 3242 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead) & 3243 CRYPTO_TFM_REQ_MASK); 3244 error = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen); 3245 crypto_aead_clear_flags(aead, CRYPTO_TFM_RES_MASK); 3246 crypto_aead_set_flags(aead, crypto_aead_get_flags(aeadctx->sw_cipher) & 3247 CRYPTO_TFM_RES_MASK); 3248 if (error) 3249 return error; 3250 return chcr_ccm_common_setkey(aead, key, keylen); 3251 } 3252 3253 static int chcr_aead_rfc4309_setkey(struct crypto_aead *aead, const u8 *key, 3254 unsigned int keylen) 3255 { 3256 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead)); 3257 int error; 3258 3259 if (keylen < 3) { 3260 crypto_tfm_set_flags((struct crypto_tfm *)aead, 3261 CRYPTO_TFM_RES_BAD_KEY_LEN); 3262 aeadctx->enckey_len = 0; 3263 return -EINVAL; 3264 } 3265 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK); 3266 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead) & 3267 CRYPTO_TFM_REQ_MASK); 3268 error = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen); 3269 crypto_aead_clear_flags(aead, CRYPTO_TFM_RES_MASK); 3270 crypto_aead_set_flags(aead, crypto_aead_get_flags(aeadctx->sw_cipher) & 3271 CRYPTO_TFM_RES_MASK); 3272 if (error) 3273 return error; 3274 keylen -= 3; 3275 memcpy(aeadctx->salt, key + keylen, 3); 3276 return chcr_ccm_common_setkey(aead, key, keylen); 3277 } 3278 3279 static int chcr_gcm_setkey(struct crypto_aead *aead, const u8 *key, 3280 unsigned int keylen) 3281 { 3282 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead)); 3283 struct chcr_gcm_ctx *gctx = GCM_CTX(aeadctx); 3284 struct crypto_cipher *cipher; 3285 unsigned int ck_size; 3286 int ret = 0, key_ctx_size = 0; 3287 3288 aeadctx->enckey_len = 0; 3289 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK); 3290 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead) 3291 & CRYPTO_TFM_REQ_MASK); 3292 ret = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen); 3293 crypto_aead_clear_flags(aead, CRYPTO_TFM_RES_MASK); 3294 crypto_aead_set_flags(aead, crypto_aead_get_flags(aeadctx->sw_cipher) & 3295 CRYPTO_TFM_RES_MASK); 3296 if (ret) 3297 goto out; 3298 3299 if (get_aead_subtype(aead) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106 && 3300 keylen > 3) { 3301 keylen -= 4; /* nonce/salt is present in the last 4 bytes */ 3302 memcpy(aeadctx->salt, key + keylen, 4); 3303 } 3304 if (keylen == AES_KEYSIZE_128) { 3305 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128; 3306 } else if (keylen == AES_KEYSIZE_192) { 3307 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192; 3308 } else if (keylen == AES_KEYSIZE_256) { 3309 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256; 3310 } else { 3311 crypto_tfm_set_flags((struct crypto_tfm *)aead, 3312 CRYPTO_TFM_RES_BAD_KEY_LEN); 3313 pr_err("GCM: Invalid key length %d\n", keylen); 3314 ret = -EINVAL; 3315 goto out; 3316 } 3317 3318 memcpy(aeadctx->key, key, keylen); 3319 aeadctx->enckey_len = keylen; 3320 key_ctx_size = sizeof(struct _key_ctx) + roundup(keylen, 16) + 3321 AEAD_H_SIZE; 3322 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, 3323 CHCR_KEYCTX_MAC_KEY_SIZE_128, 3324 0, 0, 3325 key_ctx_size >> 4); 3326 /* Calculate the H = CIPH(K, 0 repeated 16 times). 3327 * It will go in key context 3328 */ 3329 cipher = crypto_alloc_cipher("aes-generic", 0, 0); 3330 if (IS_ERR(cipher)) { 3331 aeadctx->enckey_len = 0; 3332 ret = -ENOMEM; 3333 goto out; 3334 } 3335 3336 ret = crypto_cipher_setkey(cipher, key, keylen); 3337 if (ret) { 3338 aeadctx->enckey_len = 0; 3339 goto out1; 3340 } 3341 memset(gctx->ghash_h, 0, AEAD_H_SIZE); 3342 crypto_cipher_encrypt_one(cipher, gctx->ghash_h, gctx->ghash_h); 3343 3344 out1: 3345 crypto_free_cipher(cipher); 3346 out: 3347 return ret; 3348 } 3349 3350 static int chcr_authenc_setkey(struct crypto_aead *authenc, const u8 *key, 3351 unsigned int keylen) 3352 { 3353 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(authenc)); 3354 struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx); 3355 /* it contains auth and cipher key both*/ 3356 struct crypto_authenc_keys keys; 3357 unsigned int bs, subtype; 3358 unsigned int max_authsize = crypto_aead_alg(authenc)->maxauthsize; 3359 int err = 0, i, key_ctx_len = 0; 3360 unsigned char ck_size = 0; 3361 unsigned char pad[CHCR_HASH_MAX_BLOCK_SIZE_128] = { 0 }; 3362 struct crypto_shash *base_hash = ERR_PTR(-EINVAL); 3363 struct algo_param param; 3364 int align; 3365 u8 *o_ptr = NULL; 3366 3367 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK); 3368 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(authenc) 3369 & CRYPTO_TFM_REQ_MASK); 3370 err = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen); 3371 crypto_aead_clear_flags(authenc, CRYPTO_TFM_RES_MASK); 3372 crypto_aead_set_flags(authenc, crypto_aead_get_flags(aeadctx->sw_cipher) 3373 & CRYPTO_TFM_RES_MASK); 3374 if (err) 3375 goto out; 3376 3377 if (crypto_authenc_extractkeys(&keys, key, keylen) != 0) { 3378 crypto_aead_set_flags(authenc, CRYPTO_TFM_RES_BAD_KEY_LEN); 3379 goto out; 3380 } 3381 3382 if (get_alg_config(¶m, max_authsize)) { 3383 pr_err("chcr : Unsupported digest size\n"); 3384 goto out; 3385 } 3386 subtype = get_aead_subtype(authenc); 3387 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA || 3388 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) { 3389 if (keys.enckeylen < CTR_RFC3686_NONCE_SIZE) 3390 goto out; 3391 memcpy(aeadctx->nonce, keys.enckey + (keys.enckeylen 3392 - CTR_RFC3686_NONCE_SIZE), CTR_RFC3686_NONCE_SIZE); 3393 keys.enckeylen -= CTR_RFC3686_NONCE_SIZE; 3394 } 3395 if (keys.enckeylen == AES_KEYSIZE_128) { 3396 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128; 3397 } else if (keys.enckeylen == AES_KEYSIZE_192) { 3398 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192; 3399 } else if (keys.enckeylen == AES_KEYSIZE_256) { 3400 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256; 3401 } else { 3402 pr_err("chcr : Unsupported cipher key\n"); 3403 goto out; 3404 } 3405 3406 /* Copy only encryption key. We use authkey to generate h(ipad) and 3407 * h(opad) so authkey is not needed again. authkeylen size have the 3408 * size of the hash digest size. 3409 */ 3410 memcpy(aeadctx->key, keys.enckey, keys.enckeylen); 3411 aeadctx->enckey_len = keys.enckeylen; 3412 if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_SHA || 3413 subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL) { 3414 3415 get_aes_decrypt_key(actx->dec_rrkey, aeadctx->key, 3416 aeadctx->enckey_len << 3); 3417 } 3418 base_hash = chcr_alloc_shash(max_authsize); 3419 if (IS_ERR(base_hash)) { 3420 pr_err("chcr : Base driver cannot be loaded\n"); 3421 aeadctx->enckey_len = 0; 3422 memzero_explicit(&keys, sizeof(keys)); 3423 return -EINVAL; 3424 } 3425 { 3426 SHASH_DESC_ON_STACK(shash, base_hash); 3427 3428 shash->tfm = base_hash; 3429 shash->flags = crypto_shash_get_flags(base_hash); 3430 bs = crypto_shash_blocksize(base_hash); 3431 align = KEYCTX_ALIGN_PAD(max_authsize); 3432 o_ptr = actx->h_iopad + param.result_size + align; 3433 3434 if (keys.authkeylen > bs) { 3435 err = crypto_shash_digest(shash, keys.authkey, 3436 keys.authkeylen, 3437 o_ptr); 3438 if (err) { 3439 pr_err("chcr : Base driver cannot be loaded\n"); 3440 goto out; 3441 } 3442 keys.authkeylen = max_authsize; 3443 } else 3444 memcpy(o_ptr, keys.authkey, keys.authkeylen); 3445 3446 /* Compute the ipad-digest*/ 3447 memset(pad + keys.authkeylen, 0, bs - keys.authkeylen); 3448 memcpy(pad, o_ptr, keys.authkeylen); 3449 for (i = 0; i < bs >> 2; i++) 3450 *((unsigned int *)pad + i) ^= IPAD_DATA; 3451 3452 if (chcr_compute_partial_hash(shash, pad, actx->h_iopad, 3453 max_authsize)) 3454 goto out; 3455 /* Compute the opad-digest */ 3456 memset(pad + keys.authkeylen, 0, bs - keys.authkeylen); 3457 memcpy(pad, o_ptr, keys.authkeylen); 3458 for (i = 0; i < bs >> 2; i++) 3459 *((unsigned int *)pad + i) ^= OPAD_DATA; 3460 3461 if (chcr_compute_partial_hash(shash, pad, o_ptr, max_authsize)) 3462 goto out; 3463 3464 /* convert the ipad and opad digest to network order */ 3465 chcr_change_order(actx->h_iopad, param.result_size); 3466 chcr_change_order(o_ptr, param.result_size); 3467 key_ctx_len = sizeof(struct _key_ctx) + 3468 roundup(keys.enckeylen, 16) + 3469 (param.result_size + align) * 2; 3470 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, param.mk_size, 3471 0, 1, key_ctx_len >> 4); 3472 actx->auth_mode = param.auth_mode; 3473 chcr_free_shash(base_hash); 3474 3475 memzero_explicit(&keys, sizeof(keys)); 3476 return 0; 3477 } 3478 out: 3479 aeadctx->enckey_len = 0; 3480 memzero_explicit(&keys, sizeof(keys)); 3481 if (!IS_ERR(base_hash)) 3482 chcr_free_shash(base_hash); 3483 return -EINVAL; 3484 } 3485 3486 static int chcr_aead_digest_null_setkey(struct crypto_aead *authenc, 3487 const u8 *key, unsigned int keylen) 3488 { 3489 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(authenc)); 3490 struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx); 3491 struct crypto_authenc_keys keys; 3492 int err; 3493 /* it contains auth and cipher key both*/ 3494 unsigned int subtype; 3495 int key_ctx_len = 0; 3496 unsigned char ck_size = 0; 3497 3498 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK); 3499 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(authenc) 3500 & CRYPTO_TFM_REQ_MASK); 3501 err = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen); 3502 crypto_aead_clear_flags(authenc, CRYPTO_TFM_RES_MASK); 3503 crypto_aead_set_flags(authenc, crypto_aead_get_flags(aeadctx->sw_cipher) 3504 & CRYPTO_TFM_RES_MASK); 3505 if (err) 3506 goto out; 3507 3508 if (crypto_authenc_extractkeys(&keys, key, keylen) != 0) { 3509 crypto_aead_set_flags(authenc, CRYPTO_TFM_RES_BAD_KEY_LEN); 3510 goto out; 3511 } 3512 subtype = get_aead_subtype(authenc); 3513 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA || 3514 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) { 3515 if (keys.enckeylen < CTR_RFC3686_NONCE_SIZE) 3516 goto out; 3517 memcpy(aeadctx->nonce, keys.enckey + (keys.enckeylen 3518 - CTR_RFC3686_NONCE_SIZE), CTR_RFC3686_NONCE_SIZE); 3519 keys.enckeylen -= CTR_RFC3686_NONCE_SIZE; 3520 } 3521 if (keys.enckeylen == AES_KEYSIZE_128) { 3522 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128; 3523 } else if (keys.enckeylen == AES_KEYSIZE_192) { 3524 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192; 3525 } else if (keys.enckeylen == AES_KEYSIZE_256) { 3526 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256; 3527 } else { 3528 pr_err("chcr : Unsupported cipher key %d\n", keys.enckeylen); 3529 goto out; 3530 } 3531 memcpy(aeadctx->key, keys.enckey, keys.enckeylen); 3532 aeadctx->enckey_len = keys.enckeylen; 3533 if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_SHA || 3534 subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL) { 3535 get_aes_decrypt_key(actx->dec_rrkey, aeadctx->key, 3536 aeadctx->enckey_len << 3); 3537 } 3538 key_ctx_len = sizeof(struct _key_ctx) + roundup(keys.enckeylen, 16); 3539 3540 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY, 0, 3541 0, key_ctx_len >> 4); 3542 actx->auth_mode = CHCR_SCMD_AUTH_MODE_NOP; 3543 memzero_explicit(&keys, sizeof(keys)); 3544 return 0; 3545 out: 3546 aeadctx->enckey_len = 0; 3547 memzero_explicit(&keys, sizeof(keys)); 3548 return -EINVAL; 3549 } 3550 3551 static int chcr_aead_op(struct aead_request *req, 3552 int size, 3553 create_wr_t create_wr_fn) 3554 { 3555 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 3556 struct uld_ctx *u_ctx; 3557 struct sk_buff *skb; 3558 int isfull = 0; 3559 3560 if (!a_ctx(tfm)->dev) { 3561 pr_err("chcr : %s : No crypto device.\n", __func__); 3562 return -ENXIO; 3563 } 3564 u_ctx = ULD_CTX(a_ctx(tfm)); 3565 if (cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0], 3566 a_ctx(tfm)->tx_qidx)) { 3567 isfull = 1; 3568 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) 3569 return -ENOSPC; 3570 } 3571 3572 /* Form a WR from req */ 3573 skb = create_wr_fn(req, u_ctx->lldi.rxq_ids[a_ctx(tfm)->rx_qidx], size); 3574 3575 if (IS_ERR(skb) || !skb) 3576 return PTR_ERR(skb); 3577 3578 skb->dev = u_ctx->lldi.ports[0]; 3579 set_wr_txq(skb, CPL_PRIORITY_DATA, a_ctx(tfm)->tx_qidx); 3580 chcr_send_wr(skb); 3581 return isfull ? -EBUSY : -EINPROGRESS; 3582 } 3583 3584 static int chcr_aead_encrypt(struct aead_request *req) 3585 { 3586 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 3587 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); 3588 3589 reqctx->verify = VERIFY_HW; 3590 reqctx->op = CHCR_ENCRYPT_OP; 3591 3592 switch (get_aead_subtype(tfm)) { 3593 case CRYPTO_ALG_SUB_TYPE_CTR_SHA: 3594 case CRYPTO_ALG_SUB_TYPE_CBC_SHA: 3595 case CRYPTO_ALG_SUB_TYPE_CBC_NULL: 3596 case CRYPTO_ALG_SUB_TYPE_CTR_NULL: 3597 return chcr_aead_op(req, 0, create_authenc_wr); 3598 case CRYPTO_ALG_SUB_TYPE_AEAD_CCM: 3599 case CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309: 3600 return chcr_aead_op(req, 0, create_aead_ccm_wr); 3601 default: 3602 return chcr_aead_op(req, 0, create_gcm_wr); 3603 } 3604 } 3605 3606 static int chcr_aead_decrypt(struct aead_request *req) 3607 { 3608 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 3609 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 3610 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); 3611 int size; 3612 3613 if (aeadctx->mayverify == VERIFY_SW) { 3614 size = crypto_aead_maxauthsize(tfm); 3615 reqctx->verify = VERIFY_SW; 3616 } else { 3617 size = 0; 3618 reqctx->verify = VERIFY_HW; 3619 } 3620 reqctx->op = CHCR_DECRYPT_OP; 3621 switch (get_aead_subtype(tfm)) { 3622 case CRYPTO_ALG_SUB_TYPE_CBC_SHA: 3623 case CRYPTO_ALG_SUB_TYPE_CTR_SHA: 3624 case CRYPTO_ALG_SUB_TYPE_CBC_NULL: 3625 case CRYPTO_ALG_SUB_TYPE_CTR_NULL: 3626 return chcr_aead_op(req, size, create_authenc_wr); 3627 case CRYPTO_ALG_SUB_TYPE_AEAD_CCM: 3628 case CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309: 3629 return chcr_aead_op(req, size, create_aead_ccm_wr); 3630 default: 3631 return chcr_aead_op(req, size, create_gcm_wr); 3632 } 3633 } 3634 3635 static struct chcr_alg_template driver_algs[] = { 3636 /* AES-CBC */ 3637 { 3638 .type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_SUB_TYPE_CBC, 3639 .is_registered = 0, 3640 .alg.crypto = { 3641 .cra_name = "cbc(aes)", 3642 .cra_driver_name = "cbc-aes-chcr", 3643 .cra_blocksize = AES_BLOCK_SIZE, 3644 .cra_init = chcr_cra_init, 3645 .cra_exit = chcr_cra_exit, 3646 .cra_u.ablkcipher = { 3647 .min_keysize = AES_MIN_KEY_SIZE, 3648 .max_keysize = AES_MAX_KEY_SIZE, 3649 .ivsize = AES_BLOCK_SIZE, 3650 .setkey = chcr_aes_cbc_setkey, 3651 .encrypt = chcr_aes_encrypt, 3652 .decrypt = chcr_aes_decrypt, 3653 } 3654 } 3655 }, 3656 { 3657 .type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_SUB_TYPE_XTS, 3658 .is_registered = 0, 3659 .alg.crypto = { 3660 .cra_name = "xts(aes)", 3661 .cra_driver_name = "xts-aes-chcr", 3662 .cra_blocksize = AES_BLOCK_SIZE, 3663 .cra_init = chcr_cra_init, 3664 .cra_exit = NULL, 3665 .cra_u .ablkcipher = { 3666 .min_keysize = 2 * AES_MIN_KEY_SIZE, 3667 .max_keysize = 2 * AES_MAX_KEY_SIZE, 3668 .ivsize = AES_BLOCK_SIZE, 3669 .setkey = chcr_aes_xts_setkey, 3670 .encrypt = chcr_aes_encrypt, 3671 .decrypt = chcr_aes_decrypt, 3672 } 3673 } 3674 }, 3675 { 3676 .type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_SUB_TYPE_CTR, 3677 .is_registered = 0, 3678 .alg.crypto = { 3679 .cra_name = "ctr(aes)", 3680 .cra_driver_name = "ctr-aes-chcr", 3681 .cra_blocksize = 1, 3682 .cra_init = chcr_cra_init, 3683 .cra_exit = chcr_cra_exit, 3684 .cra_u.ablkcipher = { 3685 .min_keysize = AES_MIN_KEY_SIZE, 3686 .max_keysize = AES_MAX_KEY_SIZE, 3687 .ivsize = AES_BLOCK_SIZE, 3688 .setkey = chcr_aes_ctr_setkey, 3689 .encrypt = chcr_aes_encrypt, 3690 .decrypt = chcr_aes_decrypt, 3691 } 3692 } 3693 }, 3694 { 3695 .type = CRYPTO_ALG_TYPE_ABLKCIPHER | 3696 CRYPTO_ALG_SUB_TYPE_CTR_RFC3686, 3697 .is_registered = 0, 3698 .alg.crypto = { 3699 .cra_name = "rfc3686(ctr(aes))", 3700 .cra_driver_name = "rfc3686-ctr-aes-chcr", 3701 .cra_blocksize = 1, 3702 .cra_init = chcr_rfc3686_init, 3703 .cra_exit = chcr_cra_exit, 3704 .cra_u.ablkcipher = { 3705 .min_keysize = AES_MIN_KEY_SIZE + 3706 CTR_RFC3686_NONCE_SIZE, 3707 .max_keysize = AES_MAX_KEY_SIZE + 3708 CTR_RFC3686_NONCE_SIZE, 3709 .ivsize = CTR_RFC3686_IV_SIZE, 3710 .setkey = chcr_aes_rfc3686_setkey, 3711 .encrypt = chcr_aes_encrypt, 3712 .decrypt = chcr_aes_decrypt, 3713 .geniv = "seqiv", 3714 } 3715 } 3716 }, 3717 /* SHA */ 3718 { 3719 .type = CRYPTO_ALG_TYPE_AHASH, 3720 .is_registered = 0, 3721 .alg.hash = { 3722 .halg.digestsize = SHA1_DIGEST_SIZE, 3723 .halg.base = { 3724 .cra_name = "sha1", 3725 .cra_driver_name = "sha1-chcr", 3726 .cra_blocksize = SHA1_BLOCK_SIZE, 3727 } 3728 } 3729 }, 3730 { 3731 .type = CRYPTO_ALG_TYPE_AHASH, 3732 .is_registered = 0, 3733 .alg.hash = { 3734 .halg.digestsize = SHA256_DIGEST_SIZE, 3735 .halg.base = { 3736 .cra_name = "sha256", 3737 .cra_driver_name = "sha256-chcr", 3738 .cra_blocksize = SHA256_BLOCK_SIZE, 3739 } 3740 } 3741 }, 3742 { 3743 .type = CRYPTO_ALG_TYPE_AHASH, 3744 .is_registered = 0, 3745 .alg.hash = { 3746 .halg.digestsize = SHA224_DIGEST_SIZE, 3747 .halg.base = { 3748 .cra_name = "sha224", 3749 .cra_driver_name = "sha224-chcr", 3750 .cra_blocksize = SHA224_BLOCK_SIZE, 3751 } 3752 } 3753 }, 3754 { 3755 .type = CRYPTO_ALG_TYPE_AHASH, 3756 .is_registered = 0, 3757 .alg.hash = { 3758 .halg.digestsize = SHA384_DIGEST_SIZE, 3759 .halg.base = { 3760 .cra_name = "sha384", 3761 .cra_driver_name = "sha384-chcr", 3762 .cra_blocksize = SHA384_BLOCK_SIZE, 3763 } 3764 } 3765 }, 3766 { 3767 .type = CRYPTO_ALG_TYPE_AHASH, 3768 .is_registered = 0, 3769 .alg.hash = { 3770 .halg.digestsize = SHA512_DIGEST_SIZE, 3771 .halg.base = { 3772 .cra_name = "sha512", 3773 .cra_driver_name = "sha512-chcr", 3774 .cra_blocksize = SHA512_BLOCK_SIZE, 3775 } 3776 } 3777 }, 3778 /* HMAC */ 3779 { 3780 .type = CRYPTO_ALG_TYPE_HMAC, 3781 .is_registered = 0, 3782 .alg.hash = { 3783 .halg.digestsize = SHA1_DIGEST_SIZE, 3784 .halg.base = { 3785 .cra_name = "hmac(sha1)", 3786 .cra_driver_name = "hmac-sha1-chcr", 3787 .cra_blocksize = SHA1_BLOCK_SIZE, 3788 } 3789 } 3790 }, 3791 { 3792 .type = CRYPTO_ALG_TYPE_HMAC, 3793 .is_registered = 0, 3794 .alg.hash = { 3795 .halg.digestsize = SHA224_DIGEST_SIZE, 3796 .halg.base = { 3797 .cra_name = "hmac(sha224)", 3798 .cra_driver_name = "hmac-sha224-chcr", 3799 .cra_blocksize = SHA224_BLOCK_SIZE, 3800 } 3801 } 3802 }, 3803 { 3804 .type = CRYPTO_ALG_TYPE_HMAC, 3805 .is_registered = 0, 3806 .alg.hash = { 3807 .halg.digestsize = SHA256_DIGEST_SIZE, 3808 .halg.base = { 3809 .cra_name = "hmac(sha256)", 3810 .cra_driver_name = "hmac-sha256-chcr", 3811 .cra_blocksize = SHA256_BLOCK_SIZE, 3812 } 3813 } 3814 }, 3815 { 3816 .type = CRYPTO_ALG_TYPE_HMAC, 3817 .is_registered = 0, 3818 .alg.hash = { 3819 .halg.digestsize = SHA384_DIGEST_SIZE, 3820 .halg.base = { 3821 .cra_name = "hmac(sha384)", 3822 .cra_driver_name = "hmac-sha384-chcr", 3823 .cra_blocksize = SHA384_BLOCK_SIZE, 3824 } 3825 } 3826 }, 3827 { 3828 .type = CRYPTO_ALG_TYPE_HMAC, 3829 .is_registered = 0, 3830 .alg.hash = { 3831 .halg.digestsize = SHA512_DIGEST_SIZE, 3832 .halg.base = { 3833 .cra_name = "hmac(sha512)", 3834 .cra_driver_name = "hmac-sha512-chcr", 3835 .cra_blocksize = SHA512_BLOCK_SIZE, 3836 } 3837 } 3838 }, 3839 /* Add AEAD Algorithms */ 3840 { 3841 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_GCM, 3842 .is_registered = 0, 3843 .alg.aead = { 3844 .base = { 3845 .cra_name = "gcm(aes)", 3846 .cra_driver_name = "gcm-aes-chcr", 3847 .cra_blocksize = 1, 3848 .cra_priority = CHCR_AEAD_PRIORITY, 3849 .cra_ctxsize = sizeof(struct chcr_context) + 3850 sizeof(struct chcr_aead_ctx) + 3851 sizeof(struct chcr_gcm_ctx), 3852 }, 3853 .ivsize = GCM_AES_IV_SIZE, 3854 .maxauthsize = GHASH_DIGEST_SIZE, 3855 .setkey = chcr_gcm_setkey, 3856 .setauthsize = chcr_gcm_setauthsize, 3857 } 3858 }, 3859 { 3860 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106, 3861 .is_registered = 0, 3862 .alg.aead = { 3863 .base = { 3864 .cra_name = "rfc4106(gcm(aes))", 3865 .cra_driver_name = "rfc4106-gcm-aes-chcr", 3866 .cra_blocksize = 1, 3867 .cra_priority = CHCR_AEAD_PRIORITY + 1, 3868 .cra_ctxsize = sizeof(struct chcr_context) + 3869 sizeof(struct chcr_aead_ctx) + 3870 sizeof(struct chcr_gcm_ctx), 3871 3872 }, 3873 .ivsize = GCM_RFC4106_IV_SIZE, 3874 .maxauthsize = GHASH_DIGEST_SIZE, 3875 .setkey = chcr_gcm_setkey, 3876 .setauthsize = chcr_4106_4309_setauthsize, 3877 } 3878 }, 3879 { 3880 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_CCM, 3881 .is_registered = 0, 3882 .alg.aead = { 3883 .base = { 3884 .cra_name = "ccm(aes)", 3885 .cra_driver_name = "ccm-aes-chcr", 3886 .cra_blocksize = 1, 3887 .cra_priority = CHCR_AEAD_PRIORITY, 3888 .cra_ctxsize = sizeof(struct chcr_context) + 3889 sizeof(struct chcr_aead_ctx), 3890 3891 }, 3892 .ivsize = AES_BLOCK_SIZE, 3893 .maxauthsize = GHASH_DIGEST_SIZE, 3894 .setkey = chcr_aead_ccm_setkey, 3895 .setauthsize = chcr_ccm_setauthsize, 3896 } 3897 }, 3898 { 3899 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309, 3900 .is_registered = 0, 3901 .alg.aead = { 3902 .base = { 3903 .cra_name = "rfc4309(ccm(aes))", 3904 .cra_driver_name = "rfc4309-ccm-aes-chcr", 3905 .cra_blocksize = 1, 3906 .cra_priority = CHCR_AEAD_PRIORITY + 1, 3907 .cra_ctxsize = sizeof(struct chcr_context) + 3908 sizeof(struct chcr_aead_ctx), 3909 3910 }, 3911 .ivsize = 8, 3912 .maxauthsize = GHASH_DIGEST_SIZE, 3913 .setkey = chcr_aead_rfc4309_setkey, 3914 .setauthsize = chcr_4106_4309_setauthsize, 3915 } 3916 }, 3917 { 3918 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA, 3919 .is_registered = 0, 3920 .alg.aead = { 3921 .base = { 3922 .cra_name = "authenc(hmac(sha1),cbc(aes))", 3923 .cra_driver_name = 3924 "authenc-hmac-sha1-cbc-aes-chcr", 3925 .cra_blocksize = AES_BLOCK_SIZE, 3926 .cra_priority = CHCR_AEAD_PRIORITY, 3927 .cra_ctxsize = sizeof(struct chcr_context) + 3928 sizeof(struct chcr_aead_ctx) + 3929 sizeof(struct chcr_authenc_ctx), 3930 3931 }, 3932 .ivsize = AES_BLOCK_SIZE, 3933 .maxauthsize = SHA1_DIGEST_SIZE, 3934 .setkey = chcr_authenc_setkey, 3935 .setauthsize = chcr_authenc_setauthsize, 3936 } 3937 }, 3938 { 3939 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA, 3940 .is_registered = 0, 3941 .alg.aead = { 3942 .base = { 3943 3944 .cra_name = "authenc(hmac(sha256),cbc(aes))", 3945 .cra_driver_name = 3946 "authenc-hmac-sha256-cbc-aes-chcr", 3947 .cra_blocksize = AES_BLOCK_SIZE, 3948 .cra_priority = CHCR_AEAD_PRIORITY, 3949 .cra_ctxsize = sizeof(struct chcr_context) + 3950 sizeof(struct chcr_aead_ctx) + 3951 sizeof(struct chcr_authenc_ctx), 3952 3953 }, 3954 .ivsize = AES_BLOCK_SIZE, 3955 .maxauthsize = SHA256_DIGEST_SIZE, 3956 .setkey = chcr_authenc_setkey, 3957 .setauthsize = chcr_authenc_setauthsize, 3958 } 3959 }, 3960 { 3961 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA, 3962 .is_registered = 0, 3963 .alg.aead = { 3964 .base = { 3965 .cra_name = "authenc(hmac(sha224),cbc(aes))", 3966 .cra_driver_name = 3967 "authenc-hmac-sha224-cbc-aes-chcr", 3968 .cra_blocksize = AES_BLOCK_SIZE, 3969 .cra_priority = CHCR_AEAD_PRIORITY, 3970 .cra_ctxsize = sizeof(struct chcr_context) + 3971 sizeof(struct chcr_aead_ctx) + 3972 sizeof(struct chcr_authenc_ctx), 3973 }, 3974 .ivsize = AES_BLOCK_SIZE, 3975 .maxauthsize = SHA224_DIGEST_SIZE, 3976 .setkey = chcr_authenc_setkey, 3977 .setauthsize = chcr_authenc_setauthsize, 3978 } 3979 }, 3980 { 3981 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA, 3982 .is_registered = 0, 3983 .alg.aead = { 3984 .base = { 3985 .cra_name = "authenc(hmac(sha384),cbc(aes))", 3986 .cra_driver_name = 3987 "authenc-hmac-sha384-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 = SHA384_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(sha512),cbc(aes))", 4007 .cra_driver_name = 4008 "authenc-hmac-sha512-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 }, 4016 .ivsize = AES_BLOCK_SIZE, 4017 .maxauthsize = SHA512_DIGEST_SIZE, 4018 .setkey = chcr_authenc_setkey, 4019 .setauthsize = chcr_authenc_setauthsize, 4020 } 4021 }, 4022 { 4023 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_NULL, 4024 .is_registered = 0, 4025 .alg.aead = { 4026 .base = { 4027 .cra_name = "authenc(digest_null,cbc(aes))", 4028 .cra_driver_name = 4029 "authenc-digest_null-cbc-aes-chcr", 4030 .cra_blocksize = AES_BLOCK_SIZE, 4031 .cra_priority = CHCR_AEAD_PRIORITY, 4032 .cra_ctxsize = sizeof(struct chcr_context) + 4033 sizeof(struct chcr_aead_ctx) + 4034 sizeof(struct chcr_authenc_ctx), 4035 4036 }, 4037 .ivsize = AES_BLOCK_SIZE, 4038 .maxauthsize = 0, 4039 .setkey = chcr_aead_digest_null_setkey, 4040 .setauthsize = chcr_authenc_null_setauthsize, 4041 } 4042 }, 4043 { 4044 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA, 4045 .is_registered = 0, 4046 .alg.aead = { 4047 .base = { 4048 .cra_name = "authenc(hmac(sha1),rfc3686(ctr(aes)))", 4049 .cra_driver_name = 4050 "authenc-hmac-sha1-rfc3686-ctr-aes-chcr", 4051 .cra_blocksize = 1, 4052 .cra_priority = CHCR_AEAD_PRIORITY, 4053 .cra_ctxsize = sizeof(struct chcr_context) + 4054 sizeof(struct chcr_aead_ctx) + 4055 sizeof(struct chcr_authenc_ctx), 4056 4057 }, 4058 .ivsize = CTR_RFC3686_IV_SIZE, 4059 .maxauthsize = SHA1_DIGEST_SIZE, 4060 .setkey = chcr_authenc_setkey, 4061 .setauthsize = chcr_authenc_setauthsize, 4062 } 4063 }, 4064 { 4065 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA, 4066 .is_registered = 0, 4067 .alg.aead = { 4068 .base = { 4069 4070 .cra_name = "authenc(hmac(sha256),rfc3686(ctr(aes)))", 4071 .cra_driver_name = 4072 "authenc-hmac-sha256-rfc3686-ctr-aes-chcr", 4073 .cra_blocksize = 1, 4074 .cra_priority = CHCR_AEAD_PRIORITY, 4075 .cra_ctxsize = sizeof(struct chcr_context) + 4076 sizeof(struct chcr_aead_ctx) + 4077 sizeof(struct chcr_authenc_ctx), 4078 4079 }, 4080 .ivsize = CTR_RFC3686_IV_SIZE, 4081 .maxauthsize = SHA256_DIGEST_SIZE, 4082 .setkey = chcr_authenc_setkey, 4083 .setauthsize = chcr_authenc_setauthsize, 4084 } 4085 }, 4086 { 4087 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA, 4088 .is_registered = 0, 4089 .alg.aead = { 4090 .base = { 4091 .cra_name = "authenc(hmac(sha224),rfc3686(ctr(aes)))", 4092 .cra_driver_name = 4093 "authenc-hmac-sha224-rfc3686-ctr-aes-chcr", 4094 .cra_blocksize = 1, 4095 .cra_priority = CHCR_AEAD_PRIORITY, 4096 .cra_ctxsize = sizeof(struct chcr_context) + 4097 sizeof(struct chcr_aead_ctx) + 4098 sizeof(struct chcr_authenc_ctx), 4099 }, 4100 .ivsize = CTR_RFC3686_IV_SIZE, 4101 .maxauthsize = SHA224_DIGEST_SIZE, 4102 .setkey = chcr_authenc_setkey, 4103 .setauthsize = chcr_authenc_setauthsize, 4104 } 4105 }, 4106 { 4107 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA, 4108 .is_registered = 0, 4109 .alg.aead = { 4110 .base = { 4111 .cra_name = "authenc(hmac(sha384),rfc3686(ctr(aes)))", 4112 .cra_driver_name = 4113 "authenc-hmac-sha384-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 = SHA384_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(sha512),rfc3686(ctr(aes)))", 4133 .cra_driver_name = 4134 "authenc-hmac-sha512-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 }, 4142 .ivsize = CTR_RFC3686_IV_SIZE, 4143 .maxauthsize = SHA512_DIGEST_SIZE, 4144 .setkey = chcr_authenc_setkey, 4145 .setauthsize = chcr_authenc_setauthsize, 4146 } 4147 }, 4148 { 4149 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_NULL, 4150 .is_registered = 0, 4151 .alg.aead = { 4152 .base = { 4153 .cra_name = "authenc(digest_null,rfc3686(ctr(aes)))", 4154 .cra_driver_name = 4155 "authenc-digest_null-rfc3686-ctr-aes-chcr", 4156 .cra_blocksize = 1, 4157 .cra_priority = CHCR_AEAD_PRIORITY, 4158 .cra_ctxsize = sizeof(struct chcr_context) + 4159 sizeof(struct chcr_aead_ctx) + 4160 sizeof(struct chcr_authenc_ctx), 4161 4162 }, 4163 .ivsize = CTR_RFC3686_IV_SIZE, 4164 .maxauthsize = 0, 4165 .setkey = chcr_aead_digest_null_setkey, 4166 .setauthsize = chcr_authenc_null_setauthsize, 4167 } 4168 }, 4169 4170 }; 4171 4172 /* 4173 * chcr_unregister_alg - Deregister crypto algorithms with 4174 * kernel framework. 4175 */ 4176 static int chcr_unregister_alg(void) 4177 { 4178 int i; 4179 4180 for (i = 0; i < ARRAY_SIZE(driver_algs); i++) { 4181 switch (driver_algs[i].type & CRYPTO_ALG_TYPE_MASK) { 4182 case CRYPTO_ALG_TYPE_ABLKCIPHER: 4183 if (driver_algs[i].is_registered) 4184 crypto_unregister_alg( 4185 &driver_algs[i].alg.crypto); 4186 break; 4187 case CRYPTO_ALG_TYPE_AEAD: 4188 if (driver_algs[i].is_registered) 4189 crypto_unregister_aead( 4190 &driver_algs[i].alg.aead); 4191 break; 4192 case CRYPTO_ALG_TYPE_AHASH: 4193 if (driver_algs[i].is_registered) 4194 crypto_unregister_ahash( 4195 &driver_algs[i].alg.hash); 4196 break; 4197 } 4198 driver_algs[i].is_registered = 0; 4199 } 4200 return 0; 4201 } 4202 4203 #define SZ_AHASH_CTX sizeof(struct chcr_context) 4204 #define SZ_AHASH_H_CTX (sizeof(struct chcr_context) + sizeof(struct hmac_ctx)) 4205 #define SZ_AHASH_REQ_CTX sizeof(struct chcr_ahash_req_ctx) 4206 4207 /* 4208 * chcr_register_alg - Register crypto algorithms with kernel framework. 4209 */ 4210 static int chcr_register_alg(void) 4211 { 4212 struct crypto_alg ai; 4213 struct ahash_alg *a_hash; 4214 int err = 0, i; 4215 char *name = NULL; 4216 4217 for (i = 0; i < ARRAY_SIZE(driver_algs); i++) { 4218 if (driver_algs[i].is_registered) 4219 continue; 4220 switch (driver_algs[i].type & CRYPTO_ALG_TYPE_MASK) { 4221 case CRYPTO_ALG_TYPE_ABLKCIPHER: 4222 driver_algs[i].alg.crypto.cra_priority = 4223 CHCR_CRA_PRIORITY; 4224 driver_algs[i].alg.crypto.cra_module = THIS_MODULE; 4225 driver_algs[i].alg.crypto.cra_flags = 4226 CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC | 4227 CRYPTO_ALG_NEED_FALLBACK; 4228 driver_algs[i].alg.crypto.cra_ctxsize = 4229 sizeof(struct chcr_context) + 4230 sizeof(struct ablk_ctx); 4231 driver_algs[i].alg.crypto.cra_alignmask = 0; 4232 driver_algs[i].alg.crypto.cra_type = 4233 &crypto_ablkcipher_type; 4234 err = crypto_register_alg(&driver_algs[i].alg.crypto); 4235 name = driver_algs[i].alg.crypto.cra_driver_name; 4236 break; 4237 case CRYPTO_ALG_TYPE_AEAD: 4238 driver_algs[i].alg.aead.base.cra_flags = 4239 CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK; 4240 driver_algs[i].alg.aead.encrypt = chcr_aead_encrypt; 4241 driver_algs[i].alg.aead.decrypt = chcr_aead_decrypt; 4242 driver_algs[i].alg.aead.init = chcr_aead_cra_init; 4243 driver_algs[i].alg.aead.exit = chcr_aead_cra_exit; 4244 driver_algs[i].alg.aead.base.cra_module = THIS_MODULE; 4245 err = crypto_register_aead(&driver_algs[i].alg.aead); 4246 name = driver_algs[i].alg.aead.base.cra_driver_name; 4247 break; 4248 case CRYPTO_ALG_TYPE_AHASH: 4249 a_hash = &driver_algs[i].alg.hash; 4250 a_hash->update = chcr_ahash_update; 4251 a_hash->final = chcr_ahash_final; 4252 a_hash->finup = chcr_ahash_finup; 4253 a_hash->digest = chcr_ahash_digest; 4254 a_hash->export = chcr_ahash_export; 4255 a_hash->import = chcr_ahash_import; 4256 a_hash->halg.statesize = SZ_AHASH_REQ_CTX; 4257 a_hash->halg.base.cra_priority = CHCR_CRA_PRIORITY; 4258 a_hash->halg.base.cra_module = THIS_MODULE; 4259 a_hash->halg.base.cra_flags = CRYPTO_ALG_ASYNC; 4260 a_hash->halg.base.cra_alignmask = 0; 4261 a_hash->halg.base.cra_exit = NULL; 4262 4263 if (driver_algs[i].type == CRYPTO_ALG_TYPE_HMAC) { 4264 a_hash->halg.base.cra_init = chcr_hmac_cra_init; 4265 a_hash->halg.base.cra_exit = chcr_hmac_cra_exit; 4266 a_hash->init = chcr_hmac_init; 4267 a_hash->setkey = chcr_ahash_setkey; 4268 a_hash->halg.base.cra_ctxsize = SZ_AHASH_H_CTX; 4269 } else { 4270 a_hash->init = chcr_sha_init; 4271 a_hash->halg.base.cra_ctxsize = SZ_AHASH_CTX; 4272 a_hash->halg.base.cra_init = chcr_sha_cra_init; 4273 } 4274 err = crypto_register_ahash(&driver_algs[i].alg.hash); 4275 ai = driver_algs[i].alg.hash.halg.base; 4276 name = ai.cra_driver_name; 4277 break; 4278 } 4279 if (err) { 4280 pr_err("chcr : %s : Algorithm registration failed\n", 4281 name); 4282 goto register_err; 4283 } else { 4284 driver_algs[i].is_registered = 1; 4285 } 4286 } 4287 return 0; 4288 4289 register_err: 4290 chcr_unregister_alg(); 4291 return err; 4292 } 4293 4294 /* 4295 * start_crypto - Register the crypto algorithms. 4296 * This should called once when the first device comesup. After this 4297 * kernel will start calling driver APIs for crypto operations. 4298 */ 4299 int start_crypto(void) 4300 { 4301 return chcr_register_alg(); 4302 } 4303 4304 /* 4305 * stop_crypto - Deregister all the crypto algorithms with kernel. 4306 * This should be called once when the last device goes down. After this 4307 * kernel will not call the driver API for crypto operations. 4308 */ 4309 int stop_crypto(void) 4310 { 4311 chcr_unregister_alg(); 4312 return 0; 4313 } 4314