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