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