1 /* 2 * This file is part of the Chelsio T6 Crypto driver for Linux. 3 * 4 * Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved. 5 * 6 * This software is available to you under a choice of one of two 7 * licenses. You may choose to be licensed under the terms of the GNU 8 * General Public License (GPL) Version 2, available from the file 9 * COPYING in the main directory of this source tree, or the 10 * OpenIB.org BSD license below: 11 * 12 * Redistribution and use in source and binary forms, with or 13 * without modification, are permitted provided that the following 14 * conditions are met: 15 * 16 * - Redistributions of source code must retain the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer. 19 * 20 * - Redistributions in binary form must reproduce the above 21 * copyright notice, this list of conditions and the following 22 * disclaimer in the documentation and/or other materials 23 * provided with the distribution. 24 * 25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 32 * SOFTWARE. 33 * 34 * Written and Maintained by: 35 * Manoj Malviya (manojmalviya@chelsio.com) 36 * Atul Gupta (atul.gupta@chelsio.com) 37 * Jitendra Lulla (jlulla@chelsio.com) 38 * Yeshaswi M R Gowda (yeshaswi@chelsio.com) 39 * Harsh Jain (harsh@chelsio.com) 40 */ 41 42 #define pr_fmt(fmt) "chcr:" fmt 43 44 #include <linux/kernel.h> 45 #include <linux/module.h> 46 #include <linux/crypto.h> 47 #include <linux/cryptohash.h> 48 #include <linux/skbuff.h> 49 #include <linux/rtnetlink.h> 50 #include <linux/highmem.h> 51 #include <linux/scatterlist.h> 52 53 #include <crypto/aes.h> 54 #include <crypto/algapi.h> 55 #include <crypto/hash.h> 56 #include <crypto/gcm.h> 57 #include <crypto/sha.h> 58 #include <crypto/authenc.h> 59 #include <crypto/ctr.h> 60 #include <crypto/gf128mul.h> 61 #include <crypto/internal/aead.h> 62 #include <crypto/null.h> 63 #include <crypto/internal/skcipher.h> 64 #include <crypto/aead.h> 65 #include <crypto/scatterwalk.h> 66 #include <crypto/internal/hash.h> 67 68 #include "t4fw_api.h" 69 #include "t4_msg.h" 70 #include "chcr_core.h" 71 #include "chcr_algo.h" 72 #include "chcr_crypto.h" 73 74 #define IV AES_BLOCK_SIZE 75 76 static unsigned int sgl_ent_len[] = { 77 0, 0, 16, 24, 40, 48, 64, 72, 88, 78 96, 112, 120, 136, 144, 160, 168, 184, 79 192, 208, 216, 232, 240, 256, 264, 280, 80 288, 304, 312, 328, 336, 352, 360, 376 81 }; 82 83 static unsigned int dsgl_ent_len[] = { 84 0, 32, 32, 48, 48, 64, 64, 80, 80, 85 112, 112, 128, 128, 144, 144, 160, 160, 86 192, 192, 208, 208, 224, 224, 240, 240, 87 272, 272, 288, 288, 304, 304, 320, 320 88 }; 89 90 static u32 round_constant[11] = { 91 0x01000000, 0x02000000, 0x04000000, 0x08000000, 92 0x10000000, 0x20000000, 0x40000000, 0x80000000, 93 0x1B000000, 0x36000000, 0x6C000000 94 }; 95 96 static int chcr_handle_cipher_resp(struct ablkcipher_request *req, 97 unsigned char *input, int err); 98 99 static inline struct chcr_aead_ctx *AEAD_CTX(struct chcr_context *ctx) 100 { 101 return ctx->crypto_ctx->aeadctx; 102 } 103 104 static inline struct ablk_ctx *ABLK_CTX(struct chcr_context *ctx) 105 { 106 return ctx->crypto_ctx->ablkctx; 107 } 108 109 static inline struct hmac_ctx *HMAC_CTX(struct chcr_context *ctx) 110 { 111 return ctx->crypto_ctx->hmacctx; 112 } 113 114 static inline struct chcr_gcm_ctx *GCM_CTX(struct chcr_aead_ctx *gctx) 115 { 116 return gctx->ctx->gcm; 117 } 118 119 static inline struct chcr_authenc_ctx *AUTHENC_CTX(struct chcr_aead_ctx *gctx) 120 { 121 return gctx->ctx->authenc; 122 } 123 124 static inline struct uld_ctx *ULD_CTX(struct chcr_context *ctx) 125 { 126 return container_of(ctx->dev, struct uld_ctx, dev); 127 } 128 129 static inline int is_ofld_imm(const struct sk_buff *skb) 130 { 131 return (skb->len <= SGE_MAX_WR_LEN); 132 } 133 134 static inline void chcr_init_hctx_per_wr(struct chcr_ahash_req_ctx *reqctx) 135 { 136 memset(&reqctx->hctx_wr, 0, sizeof(struct chcr_hctx_per_wr)); 137 } 138 139 static int sg_nents_xlen(struct scatterlist *sg, unsigned int reqlen, 140 unsigned int entlen, 141 unsigned int skip) 142 { 143 int nents = 0; 144 unsigned int less; 145 unsigned int skip_len = 0; 146 147 while (sg && skip) { 148 if (sg_dma_len(sg) <= skip) { 149 skip -= sg_dma_len(sg); 150 skip_len = 0; 151 sg = sg_next(sg); 152 } else { 153 skip_len = skip; 154 skip = 0; 155 } 156 } 157 158 while (sg && reqlen) { 159 less = min(reqlen, sg_dma_len(sg) - skip_len); 160 nents += DIV_ROUND_UP(less, entlen); 161 reqlen -= less; 162 skip_len = 0; 163 sg = sg_next(sg); 164 } 165 return nents; 166 } 167 168 static inline int get_aead_subtype(struct crypto_aead *aead) 169 { 170 struct aead_alg *alg = crypto_aead_alg(aead); 171 struct chcr_alg_template *chcr_crypto_alg = 172 container_of(alg, struct chcr_alg_template, alg.aead); 173 return chcr_crypto_alg->type & CRYPTO_ALG_SUB_TYPE_MASK; 174 } 175 176 void chcr_verify_tag(struct aead_request *req, u8 *input, int *err) 177 { 178 u8 temp[SHA512_DIGEST_SIZE]; 179 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 180 int authsize = crypto_aead_authsize(tfm); 181 struct cpl_fw6_pld *fw6_pld; 182 int cmp = 0; 183 184 fw6_pld = (struct cpl_fw6_pld *)input; 185 if ((get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106) || 186 (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_GCM)) { 187 cmp = crypto_memneq(&fw6_pld->data[2], (fw6_pld + 1), authsize); 188 } else { 189 190 sg_pcopy_to_buffer(req->src, sg_nents(req->src), temp, 191 authsize, req->assoclen + 192 req->cryptlen - authsize); 193 cmp = crypto_memneq(temp, (fw6_pld + 1), authsize); 194 } 195 if (cmp) 196 *err = -EBADMSG; 197 else 198 *err = 0; 199 } 200 201 static int chcr_inc_wrcount(struct chcr_dev *dev) 202 { 203 if (dev->state == CHCR_DETACH) 204 return 1; 205 atomic_inc(&dev->inflight); 206 return 0; 207 } 208 209 static inline void chcr_dec_wrcount(struct chcr_dev *dev) 210 { 211 atomic_dec(&dev->inflight); 212 } 213 214 static inline int chcr_handle_aead_resp(struct aead_request *req, 215 unsigned char *input, 216 int err) 217 { 218 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); 219 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 220 struct chcr_dev *dev = a_ctx(tfm)->dev; 221 222 chcr_aead_common_exit(req); 223 if (reqctx->verify == VERIFY_SW) { 224 chcr_verify_tag(req, input, &err); 225 reqctx->verify = VERIFY_HW; 226 } 227 chcr_dec_wrcount(dev); 228 req->base.complete(&req->base, err); 229 230 return err; 231 } 232 233 static void get_aes_decrypt_key(unsigned char *dec_key, 234 const unsigned char *key, 235 unsigned int keylength) 236 { 237 u32 temp; 238 u32 w_ring[MAX_NK]; 239 int i, j, k; 240 u8 nr, nk; 241 242 switch (keylength) { 243 case AES_KEYLENGTH_128BIT: 244 nk = KEYLENGTH_4BYTES; 245 nr = NUMBER_OF_ROUNDS_10; 246 break; 247 case AES_KEYLENGTH_192BIT: 248 nk = KEYLENGTH_6BYTES; 249 nr = NUMBER_OF_ROUNDS_12; 250 break; 251 case AES_KEYLENGTH_256BIT: 252 nk = KEYLENGTH_8BYTES; 253 nr = NUMBER_OF_ROUNDS_14; 254 break; 255 default: 256 return; 257 } 258 for (i = 0; i < nk; i++) 259 w_ring[i] = be32_to_cpu(*(u32 *)&key[4 * i]); 260 261 i = 0; 262 temp = w_ring[nk - 1]; 263 while (i + nk < (nr + 1) * 4) { 264 if (!(i % nk)) { 265 /* RotWord(temp) */ 266 temp = (temp << 8) | (temp >> 24); 267 temp = aes_ks_subword(temp); 268 temp ^= round_constant[i / nk]; 269 } else if (nk == 8 && (i % 4 == 0)) { 270 temp = aes_ks_subword(temp); 271 } 272 w_ring[i % nk] ^= temp; 273 temp = w_ring[i % nk]; 274 i++; 275 } 276 i--; 277 for (k = 0, j = i % nk; k < nk; k++) { 278 *((u32 *)dec_key + k) = htonl(w_ring[j]); 279 j--; 280 if (j < 0) 281 j += nk; 282 } 283 } 284 285 static struct crypto_shash *chcr_alloc_shash(unsigned int ds) 286 { 287 struct crypto_shash *base_hash = ERR_PTR(-EINVAL); 288 289 switch (ds) { 290 case SHA1_DIGEST_SIZE: 291 base_hash = crypto_alloc_shash("sha1", 0, 0); 292 break; 293 case SHA224_DIGEST_SIZE: 294 base_hash = crypto_alloc_shash("sha224", 0, 0); 295 break; 296 case SHA256_DIGEST_SIZE: 297 base_hash = crypto_alloc_shash("sha256", 0, 0); 298 break; 299 case SHA384_DIGEST_SIZE: 300 base_hash = crypto_alloc_shash("sha384", 0, 0); 301 break; 302 case SHA512_DIGEST_SIZE: 303 base_hash = crypto_alloc_shash("sha512", 0, 0); 304 break; 305 } 306 307 return base_hash; 308 } 309 310 static int chcr_compute_partial_hash(struct shash_desc *desc, 311 char *iopad, char *result_hash, 312 int digest_size) 313 { 314 struct sha1_state sha1_st; 315 struct sha256_state sha256_st; 316 struct sha512_state sha512_st; 317 int error; 318 319 if (digest_size == SHA1_DIGEST_SIZE) { 320 error = crypto_shash_init(desc) ?: 321 crypto_shash_update(desc, iopad, SHA1_BLOCK_SIZE) ?: 322 crypto_shash_export(desc, (void *)&sha1_st); 323 memcpy(result_hash, sha1_st.state, SHA1_DIGEST_SIZE); 324 } else if (digest_size == SHA224_DIGEST_SIZE) { 325 error = crypto_shash_init(desc) ?: 326 crypto_shash_update(desc, iopad, SHA256_BLOCK_SIZE) ?: 327 crypto_shash_export(desc, (void *)&sha256_st); 328 memcpy(result_hash, sha256_st.state, SHA256_DIGEST_SIZE); 329 330 } else if (digest_size == SHA256_DIGEST_SIZE) { 331 error = crypto_shash_init(desc) ?: 332 crypto_shash_update(desc, iopad, SHA256_BLOCK_SIZE) ?: 333 crypto_shash_export(desc, (void *)&sha256_st); 334 memcpy(result_hash, sha256_st.state, SHA256_DIGEST_SIZE); 335 336 } else if (digest_size == SHA384_DIGEST_SIZE) { 337 error = crypto_shash_init(desc) ?: 338 crypto_shash_update(desc, iopad, SHA512_BLOCK_SIZE) ?: 339 crypto_shash_export(desc, (void *)&sha512_st); 340 memcpy(result_hash, sha512_st.state, SHA512_DIGEST_SIZE); 341 342 } else if (digest_size == SHA512_DIGEST_SIZE) { 343 error = crypto_shash_init(desc) ?: 344 crypto_shash_update(desc, iopad, SHA512_BLOCK_SIZE) ?: 345 crypto_shash_export(desc, (void *)&sha512_st); 346 memcpy(result_hash, sha512_st.state, SHA512_DIGEST_SIZE); 347 } else { 348 error = -EINVAL; 349 pr_err("Unknown digest size %d\n", digest_size); 350 } 351 return error; 352 } 353 354 static void chcr_change_order(char *buf, int ds) 355 { 356 int i; 357 358 if (ds == SHA512_DIGEST_SIZE) { 359 for (i = 0; i < (ds / sizeof(u64)); i++) 360 *((__be64 *)buf + i) = 361 cpu_to_be64(*((u64 *)buf + i)); 362 } else { 363 for (i = 0; i < (ds / sizeof(u32)); i++) 364 *((__be32 *)buf + i) = 365 cpu_to_be32(*((u32 *)buf + i)); 366 } 367 } 368 369 static inline int is_hmac(struct crypto_tfm *tfm) 370 { 371 struct crypto_alg *alg = tfm->__crt_alg; 372 struct chcr_alg_template *chcr_crypto_alg = 373 container_of(__crypto_ahash_alg(alg), struct chcr_alg_template, 374 alg.hash); 375 if (chcr_crypto_alg->type == CRYPTO_ALG_TYPE_HMAC) 376 return 1; 377 return 0; 378 } 379 380 static inline void dsgl_walk_init(struct dsgl_walk *walk, 381 struct cpl_rx_phys_dsgl *dsgl) 382 { 383 walk->dsgl = dsgl; 384 walk->nents = 0; 385 walk->to = (struct phys_sge_pairs *)(dsgl + 1); 386 } 387 388 static inline void dsgl_walk_end(struct dsgl_walk *walk, unsigned short qid, 389 int pci_chan_id) 390 { 391 struct cpl_rx_phys_dsgl *phys_cpl; 392 393 phys_cpl = walk->dsgl; 394 395 phys_cpl->op_to_tid = htonl(CPL_RX_PHYS_DSGL_OPCODE_V(CPL_RX_PHYS_DSGL) 396 | CPL_RX_PHYS_DSGL_ISRDMA_V(0)); 397 phys_cpl->pcirlxorder_to_noofsgentr = 398 htonl(CPL_RX_PHYS_DSGL_PCIRLXORDER_V(0) | 399 CPL_RX_PHYS_DSGL_PCINOSNOOP_V(0) | 400 CPL_RX_PHYS_DSGL_PCITPHNTENB_V(0) | 401 CPL_RX_PHYS_DSGL_PCITPHNT_V(0) | 402 CPL_RX_PHYS_DSGL_DCAID_V(0) | 403 CPL_RX_PHYS_DSGL_NOOFSGENTR_V(walk->nents)); 404 phys_cpl->rss_hdr_int.opcode = CPL_RX_PHYS_ADDR; 405 phys_cpl->rss_hdr_int.qid = htons(qid); 406 phys_cpl->rss_hdr_int.hash_val = 0; 407 phys_cpl->rss_hdr_int.channel = pci_chan_id; 408 } 409 410 static inline void dsgl_walk_add_page(struct dsgl_walk *walk, 411 size_t size, 412 dma_addr_t addr) 413 { 414 int j; 415 416 if (!size) 417 return; 418 j = walk->nents; 419 walk->to->len[j % 8] = htons(size); 420 walk->to->addr[j % 8] = cpu_to_be64(addr); 421 j++; 422 if ((j % 8) == 0) 423 walk->to++; 424 walk->nents = j; 425 } 426 427 static void dsgl_walk_add_sg(struct dsgl_walk *walk, 428 struct scatterlist *sg, 429 unsigned int slen, 430 unsigned int skip) 431 { 432 int skip_len = 0; 433 unsigned int left_size = slen, len = 0; 434 unsigned int j = walk->nents; 435 int offset, ent_len; 436 437 if (!slen) 438 return; 439 while (sg && skip) { 440 if (sg_dma_len(sg) <= skip) { 441 skip -= sg_dma_len(sg); 442 skip_len = 0; 443 sg = sg_next(sg); 444 } else { 445 skip_len = skip; 446 skip = 0; 447 } 448 } 449 450 while (left_size && sg) { 451 len = min_t(u32, left_size, sg_dma_len(sg) - skip_len); 452 offset = 0; 453 while (len) { 454 ent_len = min_t(u32, len, CHCR_DST_SG_SIZE); 455 walk->to->len[j % 8] = htons(ent_len); 456 walk->to->addr[j % 8] = cpu_to_be64(sg_dma_address(sg) + 457 offset + skip_len); 458 offset += ent_len; 459 len -= ent_len; 460 j++; 461 if ((j % 8) == 0) 462 walk->to++; 463 } 464 walk->last_sg = sg; 465 walk->last_sg_len = min_t(u32, left_size, sg_dma_len(sg) - 466 skip_len) + skip_len; 467 left_size -= min_t(u32, left_size, sg_dma_len(sg) - skip_len); 468 skip_len = 0; 469 sg = sg_next(sg); 470 } 471 walk->nents = j; 472 } 473 474 static inline void ulptx_walk_init(struct ulptx_walk *walk, 475 struct ulptx_sgl *ulp) 476 { 477 walk->sgl = ulp; 478 walk->nents = 0; 479 walk->pair_idx = 0; 480 walk->pair = ulp->sge; 481 walk->last_sg = NULL; 482 walk->last_sg_len = 0; 483 } 484 485 static inline void ulptx_walk_end(struct ulptx_walk *walk) 486 { 487 walk->sgl->cmd_nsge = htonl(ULPTX_CMD_V(ULP_TX_SC_DSGL) | 488 ULPTX_NSGE_V(walk->nents)); 489 } 490 491 492 static inline void ulptx_walk_add_page(struct ulptx_walk *walk, 493 size_t size, 494 dma_addr_t addr) 495 { 496 if (!size) 497 return; 498 499 if (walk->nents == 0) { 500 walk->sgl->len0 = cpu_to_be32(size); 501 walk->sgl->addr0 = cpu_to_be64(addr); 502 } else { 503 walk->pair->addr[walk->pair_idx] = cpu_to_be64(addr); 504 walk->pair->len[walk->pair_idx] = cpu_to_be32(size); 505 walk->pair_idx = !walk->pair_idx; 506 if (!walk->pair_idx) 507 walk->pair++; 508 } 509 walk->nents++; 510 } 511 512 static void ulptx_walk_add_sg(struct ulptx_walk *walk, 513 struct scatterlist *sg, 514 unsigned int len, 515 unsigned int skip) 516 { 517 int small; 518 int skip_len = 0; 519 unsigned int sgmin; 520 521 if (!len) 522 return; 523 while (sg && skip) { 524 if (sg_dma_len(sg) <= skip) { 525 skip -= sg_dma_len(sg); 526 skip_len = 0; 527 sg = sg_next(sg); 528 } else { 529 skip_len = skip; 530 skip = 0; 531 } 532 } 533 WARN(!sg, "SG should not be null here\n"); 534 if (sg && (walk->nents == 0)) { 535 small = min_t(unsigned int, sg_dma_len(sg) - skip_len, len); 536 sgmin = min_t(unsigned int, small, CHCR_SRC_SG_SIZE); 537 walk->sgl->len0 = cpu_to_be32(sgmin); 538 walk->sgl->addr0 = cpu_to_be64(sg_dma_address(sg) + skip_len); 539 walk->nents++; 540 len -= sgmin; 541 walk->last_sg = sg; 542 walk->last_sg_len = sgmin + skip_len; 543 skip_len += sgmin; 544 if (sg_dma_len(sg) == skip_len) { 545 sg = sg_next(sg); 546 skip_len = 0; 547 } 548 } 549 550 while (sg && len) { 551 small = min(sg_dma_len(sg) - skip_len, len); 552 sgmin = min_t(unsigned int, small, CHCR_SRC_SG_SIZE); 553 walk->pair->len[walk->pair_idx] = cpu_to_be32(sgmin); 554 walk->pair->addr[walk->pair_idx] = 555 cpu_to_be64(sg_dma_address(sg) + skip_len); 556 walk->pair_idx = !walk->pair_idx; 557 walk->nents++; 558 if (!walk->pair_idx) 559 walk->pair++; 560 len -= sgmin; 561 skip_len += sgmin; 562 walk->last_sg = sg; 563 walk->last_sg_len = skip_len; 564 if (sg_dma_len(sg) == skip_len) { 565 sg = sg_next(sg); 566 skip_len = 0; 567 } 568 } 569 } 570 571 static inline int get_cryptoalg_subtype(struct crypto_tfm *tfm) 572 { 573 struct crypto_alg *alg = tfm->__crt_alg; 574 struct chcr_alg_template *chcr_crypto_alg = 575 container_of(alg, struct chcr_alg_template, alg.crypto); 576 577 return chcr_crypto_alg->type & CRYPTO_ALG_SUB_TYPE_MASK; 578 } 579 580 static int cxgb4_is_crypto_q_full(struct net_device *dev, unsigned int idx) 581 { 582 struct adapter *adap = netdev2adap(dev); 583 struct sge_uld_txq_info *txq_info = 584 adap->sge.uld_txq_info[CXGB4_TX_CRYPTO]; 585 struct sge_uld_txq *txq; 586 int ret = 0; 587 588 local_bh_disable(); 589 txq = &txq_info->uldtxq[idx]; 590 spin_lock(&txq->sendq.lock); 591 if (txq->full) 592 ret = -1; 593 spin_unlock(&txq->sendq.lock); 594 local_bh_enable(); 595 return ret; 596 } 597 598 static int generate_copy_rrkey(struct ablk_ctx *ablkctx, 599 struct _key_ctx *key_ctx) 600 { 601 if (ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC) { 602 memcpy(key_ctx->key, ablkctx->rrkey, ablkctx->enckey_len); 603 } else { 604 memcpy(key_ctx->key, 605 ablkctx->key + (ablkctx->enckey_len >> 1), 606 ablkctx->enckey_len >> 1); 607 memcpy(key_ctx->key + (ablkctx->enckey_len >> 1), 608 ablkctx->rrkey, ablkctx->enckey_len >> 1); 609 } 610 return 0; 611 } 612 613 static int chcr_hash_ent_in_wr(struct scatterlist *src, 614 unsigned int minsg, 615 unsigned int space, 616 unsigned int srcskip) 617 { 618 int srclen = 0; 619 int srcsg = minsg; 620 int soffset = 0, sless; 621 622 if (sg_dma_len(src) == srcskip) { 623 src = sg_next(src); 624 srcskip = 0; 625 } 626 while (src && space > (sgl_ent_len[srcsg + 1])) { 627 sless = min_t(unsigned int, sg_dma_len(src) - soffset - srcskip, 628 CHCR_SRC_SG_SIZE); 629 srclen += sless; 630 soffset += sless; 631 srcsg++; 632 if (sg_dma_len(src) == (soffset + srcskip)) { 633 src = sg_next(src); 634 soffset = 0; 635 srcskip = 0; 636 } 637 } 638 return srclen; 639 } 640 641 static int chcr_sg_ent_in_wr(struct scatterlist *src, 642 struct scatterlist *dst, 643 unsigned int minsg, 644 unsigned int space, 645 unsigned int srcskip, 646 unsigned int dstskip) 647 { 648 int srclen = 0, dstlen = 0; 649 int srcsg = minsg, dstsg = minsg; 650 int offset = 0, soffset = 0, less, sless = 0; 651 652 if (sg_dma_len(src) == srcskip) { 653 src = sg_next(src); 654 srcskip = 0; 655 } 656 if (sg_dma_len(dst) == dstskip) { 657 dst = sg_next(dst); 658 dstskip = 0; 659 } 660 661 while (src && dst && 662 space > (sgl_ent_len[srcsg + 1] + dsgl_ent_len[dstsg])) { 663 sless = min_t(unsigned int, sg_dma_len(src) - srcskip - soffset, 664 CHCR_SRC_SG_SIZE); 665 srclen += sless; 666 srcsg++; 667 offset = 0; 668 while (dst && ((dstsg + 1) <= MAX_DSGL_ENT) && 669 space > (sgl_ent_len[srcsg] + dsgl_ent_len[dstsg + 1])) { 670 if (srclen <= dstlen) 671 break; 672 less = min_t(unsigned int, sg_dma_len(dst) - offset - 673 dstskip, CHCR_DST_SG_SIZE); 674 dstlen += less; 675 offset += less; 676 if ((offset + dstskip) == sg_dma_len(dst)) { 677 dst = sg_next(dst); 678 offset = 0; 679 } 680 dstsg++; 681 dstskip = 0; 682 } 683 soffset += sless; 684 if ((soffset + srcskip) == sg_dma_len(src)) { 685 src = sg_next(src); 686 srcskip = 0; 687 soffset = 0; 688 } 689 690 } 691 return min(srclen, dstlen); 692 } 693 694 static int chcr_cipher_fallback(struct crypto_sync_skcipher *cipher, 695 u32 flags, 696 struct scatterlist *src, 697 struct scatterlist *dst, 698 unsigned int nbytes, 699 u8 *iv, 700 unsigned short op_type) 701 { 702 int err; 703 704 SYNC_SKCIPHER_REQUEST_ON_STACK(subreq, cipher); 705 706 skcipher_request_set_sync_tfm(subreq, cipher); 707 skcipher_request_set_callback(subreq, flags, NULL, NULL); 708 skcipher_request_set_crypt(subreq, src, dst, 709 nbytes, iv); 710 711 err = op_type ? crypto_skcipher_decrypt(subreq) : 712 crypto_skcipher_encrypt(subreq); 713 skcipher_request_zero(subreq); 714 715 return err; 716 717 } 718 static inline void create_wreq(struct chcr_context *ctx, 719 struct chcr_wr *chcr_req, 720 struct crypto_async_request *req, 721 unsigned int imm, 722 int hash_sz, 723 unsigned int len16, 724 unsigned int sc_len, 725 unsigned int lcb) 726 { 727 struct uld_ctx *u_ctx = ULD_CTX(ctx); 728 int qid = u_ctx->lldi.rxq_ids[ctx->rx_qidx]; 729 730 731 chcr_req->wreq.op_to_cctx_size = FILL_WR_OP_CCTX_SIZE; 732 chcr_req->wreq.pld_size_hash_size = 733 htonl(FW_CRYPTO_LOOKASIDE_WR_HASH_SIZE_V(hash_sz)); 734 chcr_req->wreq.len16_pkd = 735 htonl(FW_CRYPTO_LOOKASIDE_WR_LEN16_V(DIV_ROUND_UP(len16, 16))); 736 chcr_req->wreq.cookie = cpu_to_be64((uintptr_t)req); 737 chcr_req->wreq.rx_chid_to_rx_q_id = 738 FILL_WR_RX_Q_ID(ctx->tx_chan_id, qid, 739 !!lcb, ctx->tx_qidx); 740 741 chcr_req->ulptx.cmd_dest = FILL_ULPTX_CMD_DEST(ctx->tx_chan_id, 742 qid); 743 chcr_req->ulptx.len = htonl((DIV_ROUND_UP(len16, 16) - 744 ((sizeof(chcr_req->wreq)) >> 4))); 745 746 chcr_req->sc_imm.cmd_more = FILL_CMD_MORE(!imm); 747 chcr_req->sc_imm.len = cpu_to_be32(sizeof(struct cpl_tx_sec_pdu) + 748 sizeof(chcr_req->key_ctx) + sc_len); 749 } 750 751 /** 752 * create_cipher_wr - form the WR for cipher operations 753 * @req: cipher req. 754 * @ctx: crypto driver context of the request. 755 * @qid: ingress qid where response of this WR should be received. 756 * @op_type: encryption or decryption 757 */ 758 static struct sk_buff *create_cipher_wr(struct cipher_wr_param *wrparam) 759 { 760 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(wrparam->req); 761 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm)); 762 struct sk_buff *skb = NULL; 763 struct chcr_wr *chcr_req; 764 struct cpl_rx_phys_dsgl *phys_cpl; 765 struct ulptx_sgl *ulptx; 766 struct chcr_blkcipher_req_ctx *reqctx = 767 ablkcipher_request_ctx(wrparam->req); 768 unsigned int temp = 0, transhdr_len, dst_size; 769 int error; 770 int nents; 771 unsigned int kctx_len; 772 gfp_t flags = wrparam->req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? 773 GFP_KERNEL : GFP_ATOMIC; 774 struct adapter *adap = padap(c_ctx(tfm)->dev); 775 776 nents = sg_nents_xlen(reqctx->dstsg, wrparam->bytes, CHCR_DST_SG_SIZE, 777 reqctx->dst_ofst); 778 dst_size = get_space_for_phys_dsgl(nents); 779 kctx_len = roundup(ablkctx->enckey_len, 16); 780 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size); 781 nents = sg_nents_xlen(reqctx->srcsg, wrparam->bytes, 782 CHCR_SRC_SG_SIZE, reqctx->src_ofst); 783 temp = reqctx->imm ? roundup(wrparam->bytes, 16) : 784 (sgl_len(nents) * 8); 785 transhdr_len += temp; 786 transhdr_len = roundup(transhdr_len, 16); 787 skb = alloc_skb(SGE_MAX_WR_LEN, flags); 788 if (!skb) { 789 error = -ENOMEM; 790 goto err; 791 } 792 chcr_req = __skb_put_zero(skb, transhdr_len); 793 chcr_req->sec_cpl.op_ivinsrtofst = 794 FILL_SEC_CPL_OP_IVINSR(c_ctx(tfm)->tx_chan_id, 2, 1); 795 796 chcr_req->sec_cpl.pldlen = htonl(IV + wrparam->bytes); 797 chcr_req->sec_cpl.aadstart_cipherstop_hi = 798 FILL_SEC_CPL_CIPHERSTOP_HI(0, 0, IV + 1, 0); 799 800 chcr_req->sec_cpl.cipherstop_lo_authinsert = 801 FILL_SEC_CPL_AUTHINSERT(0, 0, 0, 0); 802 chcr_req->sec_cpl.seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(reqctx->op, 0, 803 ablkctx->ciph_mode, 804 0, 0, IV >> 1); 805 chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 0, 806 0, 1, dst_size); 807 808 chcr_req->key_ctx.ctx_hdr = ablkctx->key_ctx_hdr; 809 if ((reqctx->op == CHCR_DECRYPT_OP) && 810 (!(get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) == 811 CRYPTO_ALG_SUB_TYPE_CTR)) && 812 (!(get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) == 813 CRYPTO_ALG_SUB_TYPE_CTR_RFC3686))) { 814 generate_copy_rrkey(ablkctx, &chcr_req->key_ctx); 815 } else { 816 if ((ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC) || 817 (ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CTR)) { 818 memcpy(chcr_req->key_ctx.key, ablkctx->key, 819 ablkctx->enckey_len); 820 } else { 821 memcpy(chcr_req->key_ctx.key, ablkctx->key + 822 (ablkctx->enckey_len >> 1), 823 ablkctx->enckey_len >> 1); 824 memcpy(chcr_req->key_ctx.key + 825 (ablkctx->enckey_len >> 1), 826 ablkctx->key, 827 ablkctx->enckey_len >> 1); 828 } 829 } 830 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len); 831 ulptx = (struct ulptx_sgl *)((u8 *)(phys_cpl + 1) + dst_size); 832 chcr_add_cipher_src_ent(wrparam->req, ulptx, wrparam); 833 chcr_add_cipher_dst_ent(wrparam->req, phys_cpl, wrparam, wrparam->qid); 834 835 atomic_inc(&adap->chcr_stats.cipher_rqst); 836 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + kctx_len + IV 837 + (reqctx->imm ? (wrparam->bytes) : 0); 838 create_wreq(c_ctx(tfm), chcr_req, &(wrparam->req->base), reqctx->imm, 0, 839 transhdr_len, temp, 840 ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC); 841 reqctx->skb = skb; 842 843 if (reqctx->op && (ablkctx->ciph_mode == 844 CHCR_SCMD_CIPHER_MODE_AES_CBC)) 845 sg_pcopy_to_buffer(wrparam->req->src, 846 sg_nents(wrparam->req->src), wrparam->req->info, 16, 847 reqctx->processed + wrparam->bytes - AES_BLOCK_SIZE); 848 849 return skb; 850 err: 851 return ERR_PTR(error); 852 } 853 854 static inline int chcr_keyctx_ck_size(unsigned int keylen) 855 { 856 int ck_size = 0; 857 858 if (keylen == AES_KEYSIZE_128) 859 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128; 860 else if (keylen == AES_KEYSIZE_192) 861 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192; 862 else if (keylen == AES_KEYSIZE_256) 863 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256; 864 else 865 ck_size = 0; 866 867 return ck_size; 868 } 869 static int chcr_cipher_fallback_setkey(struct crypto_ablkcipher *cipher, 870 const u8 *key, 871 unsigned int keylen) 872 { 873 struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher); 874 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher)); 875 int err = 0; 876 877 crypto_sync_skcipher_clear_flags(ablkctx->sw_cipher, 878 CRYPTO_TFM_REQ_MASK); 879 crypto_sync_skcipher_set_flags(ablkctx->sw_cipher, 880 cipher->base.crt_flags & CRYPTO_TFM_REQ_MASK); 881 err = crypto_sync_skcipher_setkey(ablkctx->sw_cipher, key, keylen); 882 tfm->crt_flags &= ~CRYPTO_TFM_RES_MASK; 883 tfm->crt_flags |= 884 crypto_sync_skcipher_get_flags(ablkctx->sw_cipher) & 885 CRYPTO_TFM_RES_MASK; 886 return err; 887 } 888 889 static int chcr_aes_cbc_setkey(struct crypto_ablkcipher *cipher, 890 const u8 *key, 891 unsigned int keylen) 892 { 893 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher)); 894 unsigned int ck_size, context_size; 895 u16 alignment = 0; 896 int err; 897 898 err = chcr_cipher_fallback_setkey(cipher, key, keylen); 899 if (err) 900 goto badkey_err; 901 902 ck_size = chcr_keyctx_ck_size(keylen); 903 alignment = ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192 ? 8 : 0; 904 memcpy(ablkctx->key, key, keylen); 905 ablkctx->enckey_len = keylen; 906 get_aes_decrypt_key(ablkctx->rrkey, ablkctx->key, keylen << 3); 907 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD + 908 keylen + alignment) >> 4; 909 910 ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY, 911 0, 0, context_size); 912 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CBC; 913 return 0; 914 badkey_err: 915 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN); 916 ablkctx->enckey_len = 0; 917 918 return err; 919 } 920 921 static int chcr_aes_ctr_setkey(struct crypto_ablkcipher *cipher, 922 const u8 *key, 923 unsigned int keylen) 924 { 925 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher)); 926 unsigned int ck_size, context_size; 927 u16 alignment = 0; 928 int err; 929 930 err = chcr_cipher_fallback_setkey(cipher, key, keylen); 931 if (err) 932 goto badkey_err; 933 ck_size = chcr_keyctx_ck_size(keylen); 934 alignment = (ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192) ? 8 : 0; 935 memcpy(ablkctx->key, key, keylen); 936 ablkctx->enckey_len = keylen; 937 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD + 938 keylen + alignment) >> 4; 939 940 ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY, 941 0, 0, context_size); 942 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CTR; 943 944 return 0; 945 badkey_err: 946 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN); 947 ablkctx->enckey_len = 0; 948 949 return err; 950 } 951 952 static int chcr_aes_rfc3686_setkey(struct crypto_ablkcipher *cipher, 953 const u8 *key, 954 unsigned int keylen) 955 { 956 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher)); 957 unsigned int ck_size, context_size; 958 u16 alignment = 0; 959 int err; 960 961 if (keylen < CTR_RFC3686_NONCE_SIZE) 962 return -EINVAL; 963 memcpy(ablkctx->nonce, key + (keylen - CTR_RFC3686_NONCE_SIZE), 964 CTR_RFC3686_NONCE_SIZE); 965 966 keylen -= CTR_RFC3686_NONCE_SIZE; 967 err = chcr_cipher_fallback_setkey(cipher, key, keylen); 968 if (err) 969 goto badkey_err; 970 971 ck_size = chcr_keyctx_ck_size(keylen); 972 alignment = (ck_size == CHCR_KEYCTX_CIPHER_KEY_SIZE_192) ? 8 : 0; 973 memcpy(ablkctx->key, key, keylen); 974 ablkctx->enckey_len = keylen; 975 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD + 976 keylen + alignment) >> 4; 977 978 ablkctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY, 979 0, 0, context_size); 980 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_CTR; 981 982 return 0; 983 badkey_err: 984 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN); 985 ablkctx->enckey_len = 0; 986 987 return err; 988 } 989 static void ctr_add_iv(u8 *dstiv, u8 *srciv, u32 add) 990 { 991 unsigned int size = AES_BLOCK_SIZE; 992 __be32 *b = (__be32 *)(dstiv + size); 993 u32 c, prev; 994 995 memcpy(dstiv, srciv, AES_BLOCK_SIZE); 996 for (; size >= 4; size -= 4) { 997 prev = be32_to_cpu(*--b); 998 c = prev + add; 999 *b = cpu_to_be32(c); 1000 if (prev < c) 1001 break; 1002 add = 1; 1003 } 1004 1005 } 1006 1007 static unsigned int adjust_ctr_overflow(u8 *iv, u32 bytes) 1008 { 1009 __be32 *b = (__be32 *)(iv + AES_BLOCK_SIZE); 1010 u64 c; 1011 u32 temp = be32_to_cpu(*--b); 1012 1013 temp = ~temp; 1014 c = (u64)temp + 1; // No of block can processed withou overflow 1015 if ((bytes / AES_BLOCK_SIZE) > c) 1016 bytes = c * AES_BLOCK_SIZE; 1017 return bytes; 1018 } 1019 1020 static int chcr_update_tweak(struct ablkcipher_request *req, u8 *iv, 1021 u32 isfinal) 1022 { 1023 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); 1024 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm)); 1025 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req); 1026 struct crypto_aes_ctx aes; 1027 int ret, i; 1028 u8 *key; 1029 unsigned int keylen; 1030 int round = reqctx->last_req_len / AES_BLOCK_SIZE; 1031 int round8 = round / 8; 1032 1033 memcpy(iv, reqctx->iv, AES_BLOCK_SIZE); 1034 1035 keylen = ablkctx->enckey_len / 2; 1036 key = ablkctx->key + keylen; 1037 ret = aes_expandkey(&aes, key, keylen); 1038 if (ret) 1039 return ret; 1040 aes_encrypt(&aes, iv, iv); 1041 for (i = 0; i < round8; i++) 1042 gf128mul_x8_ble((le128 *)iv, (le128 *)iv); 1043 1044 for (i = 0; i < (round % 8); i++) 1045 gf128mul_x_ble((le128 *)iv, (le128 *)iv); 1046 1047 if (!isfinal) 1048 aes_decrypt(&aes, iv, iv); 1049 1050 memzero_explicit(&aes, sizeof(aes)); 1051 return 0; 1052 } 1053 1054 static int chcr_update_cipher_iv(struct ablkcipher_request *req, 1055 struct cpl_fw6_pld *fw6_pld, u8 *iv) 1056 { 1057 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); 1058 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req); 1059 int subtype = get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)); 1060 int ret = 0; 1061 1062 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR) 1063 ctr_add_iv(iv, req->info, (reqctx->processed / 1064 AES_BLOCK_SIZE)); 1065 else if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_RFC3686) 1066 *(__be32 *)(reqctx->iv + CTR_RFC3686_NONCE_SIZE + 1067 CTR_RFC3686_IV_SIZE) = cpu_to_be32((reqctx->processed / 1068 AES_BLOCK_SIZE) + 1); 1069 else if (subtype == CRYPTO_ALG_SUB_TYPE_XTS) 1070 ret = chcr_update_tweak(req, iv, 0); 1071 else if (subtype == CRYPTO_ALG_SUB_TYPE_CBC) { 1072 if (reqctx->op) 1073 /*Updated before sending last WR*/ 1074 memcpy(iv, req->info, AES_BLOCK_SIZE); 1075 else 1076 memcpy(iv, &fw6_pld->data[2], AES_BLOCK_SIZE); 1077 } 1078 1079 return ret; 1080 1081 } 1082 1083 /* We need separate function for final iv because in rfc3686 Initial counter 1084 * starts from 1 and buffer size of iv is 8 byte only which remains constant 1085 * for subsequent update requests 1086 */ 1087 1088 static int chcr_final_cipher_iv(struct ablkcipher_request *req, 1089 struct cpl_fw6_pld *fw6_pld, u8 *iv) 1090 { 1091 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); 1092 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req); 1093 int subtype = get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)); 1094 int ret = 0; 1095 1096 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR) 1097 ctr_add_iv(iv, req->info, DIV_ROUND_UP(reqctx->processed, 1098 AES_BLOCK_SIZE)); 1099 else if (subtype == CRYPTO_ALG_SUB_TYPE_XTS) 1100 ret = chcr_update_tweak(req, iv, 1); 1101 else if (subtype == CRYPTO_ALG_SUB_TYPE_CBC) { 1102 /*Already updated for Decrypt*/ 1103 if (!reqctx->op) 1104 memcpy(iv, &fw6_pld->data[2], AES_BLOCK_SIZE); 1105 1106 } 1107 return ret; 1108 1109 } 1110 1111 static int chcr_handle_cipher_resp(struct ablkcipher_request *req, 1112 unsigned char *input, int err) 1113 { 1114 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); 1115 struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm)); 1116 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm)); 1117 struct sk_buff *skb; 1118 struct cpl_fw6_pld *fw6_pld = (struct cpl_fw6_pld *)input; 1119 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req); 1120 struct cipher_wr_param wrparam; 1121 struct chcr_dev *dev = c_ctx(tfm)->dev; 1122 int bytes; 1123 1124 if (err) 1125 goto unmap; 1126 if (req->nbytes == reqctx->processed) { 1127 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, 1128 req); 1129 err = chcr_final_cipher_iv(req, fw6_pld, req->info); 1130 goto complete; 1131 } 1132 1133 if (!reqctx->imm) { 1134 bytes = chcr_sg_ent_in_wr(reqctx->srcsg, reqctx->dstsg, 0, 1135 CIP_SPACE_LEFT(ablkctx->enckey_len), 1136 reqctx->src_ofst, reqctx->dst_ofst); 1137 if ((bytes + reqctx->processed) >= req->nbytes) 1138 bytes = req->nbytes - reqctx->processed; 1139 else 1140 bytes = rounddown(bytes, 16); 1141 } else { 1142 /*CTR mode counter overfloa*/ 1143 bytes = req->nbytes - reqctx->processed; 1144 } 1145 err = chcr_update_cipher_iv(req, fw6_pld, reqctx->iv); 1146 if (err) 1147 goto unmap; 1148 1149 if (unlikely(bytes == 0)) { 1150 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, 1151 req); 1152 err = chcr_cipher_fallback(ablkctx->sw_cipher, 1153 req->base.flags, 1154 req->src, 1155 req->dst, 1156 req->nbytes, 1157 req->info, 1158 reqctx->op); 1159 goto complete; 1160 } 1161 1162 if (get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) == 1163 CRYPTO_ALG_SUB_TYPE_CTR) 1164 bytes = adjust_ctr_overflow(reqctx->iv, bytes); 1165 wrparam.qid = u_ctx->lldi.rxq_ids[c_ctx(tfm)->rx_qidx]; 1166 wrparam.req = req; 1167 wrparam.bytes = bytes; 1168 skb = create_cipher_wr(&wrparam); 1169 if (IS_ERR(skb)) { 1170 pr_err("chcr : %s : Failed to form WR. No memory\n", __func__); 1171 err = PTR_ERR(skb); 1172 goto unmap; 1173 } 1174 skb->dev = u_ctx->lldi.ports[0]; 1175 set_wr_txq(skb, CPL_PRIORITY_DATA, c_ctx(tfm)->tx_qidx); 1176 chcr_send_wr(skb); 1177 reqctx->last_req_len = bytes; 1178 reqctx->processed += bytes; 1179 return 0; 1180 unmap: 1181 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req); 1182 complete: 1183 chcr_dec_wrcount(dev); 1184 req->base.complete(&req->base, err); 1185 return err; 1186 } 1187 1188 static int process_cipher(struct ablkcipher_request *req, 1189 unsigned short qid, 1190 struct sk_buff **skb, 1191 unsigned short op_type) 1192 { 1193 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); 1194 unsigned int ivsize = crypto_ablkcipher_ivsize(tfm); 1195 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req); 1196 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(tfm)); 1197 struct cipher_wr_param wrparam; 1198 int bytes, err = -EINVAL; 1199 1200 reqctx->processed = 0; 1201 if (!req->info) 1202 goto error; 1203 if ((ablkctx->enckey_len == 0) || (ivsize > AES_BLOCK_SIZE) || 1204 (req->nbytes == 0) || 1205 (req->nbytes % crypto_ablkcipher_blocksize(tfm))) { 1206 pr_err("AES: Invalid value of Key Len %d nbytes %d IV Len %d\n", 1207 ablkctx->enckey_len, req->nbytes, ivsize); 1208 goto error; 1209 } 1210 1211 err = chcr_cipher_dma_map(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req); 1212 if (err) 1213 goto error; 1214 if (req->nbytes < (SGE_MAX_WR_LEN - (sizeof(struct chcr_wr) + 1215 AES_MIN_KEY_SIZE + 1216 sizeof(struct cpl_rx_phys_dsgl) + 1217 /*Min dsgl size*/ 1218 32))) { 1219 /* Can be sent as Imm*/ 1220 unsigned int dnents = 0, transhdr_len, phys_dsgl, kctx_len; 1221 1222 dnents = sg_nents_xlen(req->dst, req->nbytes, 1223 CHCR_DST_SG_SIZE, 0); 1224 phys_dsgl = get_space_for_phys_dsgl(dnents); 1225 kctx_len = roundup(ablkctx->enckey_len, 16); 1226 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, phys_dsgl); 1227 reqctx->imm = (transhdr_len + IV + req->nbytes) <= 1228 SGE_MAX_WR_LEN; 1229 bytes = IV + req->nbytes; 1230 1231 } else { 1232 reqctx->imm = 0; 1233 } 1234 1235 if (!reqctx->imm) { 1236 bytes = chcr_sg_ent_in_wr(req->src, req->dst, 0, 1237 CIP_SPACE_LEFT(ablkctx->enckey_len), 1238 0, 0); 1239 if ((bytes + reqctx->processed) >= req->nbytes) 1240 bytes = req->nbytes - reqctx->processed; 1241 else 1242 bytes = rounddown(bytes, 16); 1243 } else { 1244 bytes = req->nbytes; 1245 } 1246 if (get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) == 1247 CRYPTO_ALG_SUB_TYPE_CTR) { 1248 bytes = adjust_ctr_overflow(req->info, bytes); 1249 } 1250 if (get_cryptoalg_subtype(crypto_ablkcipher_tfm(tfm)) == 1251 CRYPTO_ALG_SUB_TYPE_CTR_RFC3686) { 1252 memcpy(reqctx->iv, ablkctx->nonce, CTR_RFC3686_NONCE_SIZE); 1253 memcpy(reqctx->iv + CTR_RFC3686_NONCE_SIZE, req->info, 1254 CTR_RFC3686_IV_SIZE); 1255 1256 /* initialize counter portion of counter block */ 1257 *(__be32 *)(reqctx->iv + CTR_RFC3686_NONCE_SIZE + 1258 CTR_RFC3686_IV_SIZE) = cpu_to_be32(1); 1259 1260 } else { 1261 1262 memcpy(reqctx->iv, req->info, IV); 1263 } 1264 if (unlikely(bytes == 0)) { 1265 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, 1266 req); 1267 err = chcr_cipher_fallback(ablkctx->sw_cipher, 1268 req->base.flags, 1269 req->src, 1270 req->dst, 1271 req->nbytes, 1272 reqctx->iv, 1273 op_type); 1274 goto error; 1275 } 1276 reqctx->op = op_type; 1277 reqctx->srcsg = req->src; 1278 reqctx->dstsg = req->dst; 1279 reqctx->src_ofst = 0; 1280 reqctx->dst_ofst = 0; 1281 wrparam.qid = qid; 1282 wrparam.req = req; 1283 wrparam.bytes = bytes; 1284 *skb = create_cipher_wr(&wrparam); 1285 if (IS_ERR(*skb)) { 1286 err = PTR_ERR(*skb); 1287 goto unmap; 1288 } 1289 reqctx->processed = bytes; 1290 reqctx->last_req_len = bytes; 1291 1292 return 0; 1293 unmap: 1294 chcr_cipher_dma_unmap(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, req); 1295 error: 1296 return err; 1297 } 1298 1299 static int chcr_aes_encrypt(struct ablkcipher_request *req) 1300 { 1301 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); 1302 struct chcr_dev *dev = c_ctx(tfm)->dev; 1303 struct sk_buff *skb = NULL; 1304 int err, isfull = 0; 1305 struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm)); 1306 1307 err = chcr_inc_wrcount(dev); 1308 if (err) 1309 return -ENXIO; 1310 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0], 1311 c_ctx(tfm)->tx_qidx))) { 1312 isfull = 1; 1313 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) { 1314 err = -ENOSPC; 1315 goto error; 1316 } 1317 } 1318 1319 err = process_cipher(req, u_ctx->lldi.rxq_ids[c_ctx(tfm)->rx_qidx], 1320 &skb, CHCR_ENCRYPT_OP); 1321 if (err || !skb) 1322 return err; 1323 skb->dev = u_ctx->lldi.ports[0]; 1324 set_wr_txq(skb, CPL_PRIORITY_DATA, c_ctx(tfm)->tx_qidx); 1325 chcr_send_wr(skb); 1326 return isfull ? -EBUSY : -EINPROGRESS; 1327 error: 1328 chcr_dec_wrcount(dev); 1329 return err; 1330 } 1331 1332 static int chcr_aes_decrypt(struct ablkcipher_request *req) 1333 { 1334 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); 1335 struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm)); 1336 struct chcr_dev *dev = c_ctx(tfm)->dev; 1337 struct sk_buff *skb = NULL; 1338 int err, isfull = 0; 1339 1340 err = chcr_inc_wrcount(dev); 1341 if (err) 1342 return -ENXIO; 1343 1344 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0], 1345 c_ctx(tfm)->tx_qidx))) { 1346 isfull = 1; 1347 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) 1348 return -ENOSPC; 1349 } 1350 1351 err = process_cipher(req, u_ctx->lldi.rxq_ids[c_ctx(tfm)->rx_qidx], 1352 &skb, CHCR_DECRYPT_OP); 1353 if (err || !skb) 1354 return err; 1355 skb->dev = u_ctx->lldi.ports[0]; 1356 set_wr_txq(skb, CPL_PRIORITY_DATA, c_ctx(tfm)->tx_qidx); 1357 chcr_send_wr(skb); 1358 return isfull ? -EBUSY : -EINPROGRESS; 1359 } 1360 1361 static int chcr_device_init(struct chcr_context *ctx) 1362 { 1363 struct uld_ctx *u_ctx = NULL; 1364 unsigned int id; 1365 int txq_perchan, txq_idx, ntxq; 1366 int err = 0, rxq_perchan, rxq_idx; 1367 1368 id = smp_processor_id(); 1369 if (!ctx->dev) { 1370 u_ctx = assign_chcr_device(); 1371 if (!u_ctx) { 1372 err = -ENXIO; 1373 pr_err("chcr device assignment fails\n"); 1374 goto out; 1375 } 1376 ctx->dev = &u_ctx->dev; 1377 ntxq = u_ctx->lldi.ntxq; 1378 rxq_perchan = u_ctx->lldi.nrxq / u_ctx->lldi.nchan; 1379 txq_perchan = ntxq / u_ctx->lldi.nchan; 1380 spin_lock(&ctx->dev->lock_chcr_dev); 1381 ctx->tx_chan_id = ctx->dev->tx_channel_id; 1382 ctx->dev->tx_channel_id = !ctx->dev->tx_channel_id; 1383 spin_unlock(&ctx->dev->lock_chcr_dev); 1384 rxq_idx = ctx->tx_chan_id * rxq_perchan; 1385 rxq_idx += id % rxq_perchan; 1386 txq_idx = ctx->tx_chan_id * txq_perchan; 1387 txq_idx += id % txq_perchan; 1388 ctx->rx_qidx = rxq_idx; 1389 ctx->tx_qidx = txq_idx; 1390 /* Channel Id used by SGE to forward packet to Host. 1391 * Same value should be used in cpl_fw6_pld RSS_CH field 1392 * by FW. Driver programs PCI channel ID to be used in fw 1393 * at the time of queue allocation with value "pi->tx_chan" 1394 */ 1395 ctx->pci_chan_id = txq_idx / txq_perchan; 1396 } 1397 out: 1398 return err; 1399 } 1400 1401 static int chcr_cra_init(struct crypto_tfm *tfm) 1402 { 1403 struct crypto_alg *alg = tfm->__crt_alg; 1404 struct chcr_context *ctx = crypto_tfm_ctx(tfm); 1405 struct ablk_ctx *ablkctx = ABLK_CTX(ctx); 1406 1407 ablkctx->sw_cipher = crypto_alloc_sync_skcipher(alg->cra_name, 0, 1408 CRYPTO_ALG_NEED_FALLBACK); 1409 if (IS_ERR(ablkctx->sw_cipher)) { 1410 pr_err("failed to allocate fallback for %s\n", alg->cra_name); 1411 return PTR_ERR(ablkctx->sw_cipher); 1412 } 1413 1414 tfm->crt_ablkcipher.reqsize = sizeof(struct chcr_blkcipher_req_ctx); 1415 return chcr_device_init(crypto_tfm_ctx(tfm)); 1416 } 1417 1418 static int chcr_rfc3686_init(struct crypto_tfm *tfm) 1419 { 1420 struct crypto_alg *alg = tfm->__crt_alg; 1421 struct chcr_context *ctx = crypto_tfm_ctx(tfm); 1422 struct ablk_ctx *ablkctx = ABLK_CTX(ctx); 1423 1424 /*RFC3686 initialises IV counter value to 1, rfc3686(ctr(aes)) 1425 * cannot be used as fallback in chcr_handle_cipher_response 1426 */ 1427 ablkctx->sw_cipher = crypto_alloc_sync_skcipher("ctr(aes)", 0, 1428 CRYPTO_ALG_NEED_FALLBACK); 1429 if (IS_ERR(ablkctx->sw_cipher)) { 1430 pr_err("failed to allocate fallback for %s\n", alg->cra_name); 1431 return PTR_ERR(ablkctx->sw_cipher); 1432 } 1433 tfm->crt_ablkcipher.reqsize = sizeof(struct chcr_blkcipher_req_ctx); 1434 return chcr_device_init(crypto_tfm_ctx(tfm)); 1435 } 1436 1437 1438 static void chcr_cra_exit(struct crypto_tfm *tfm) 1439 { 1440 struct chcr_context *ctx = crypto_tfm_ctx(tfm); 1441 struct ablk_ctx *ablkctx = ABLK_CTX(ctx); 1442 1443 crypto_free_sync_skcipher(ablkctx->sw_cipher); 1444 } 1445 1446 static int get_alg_config(struct algo_param *params, 1447 unsigned int auth_size) 1448 { 1449 switch (auth_size) { 1450 case SHA1_DIGEST_SIZE: 1451 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_160; 1452 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA1; 1453 params->result_size = SHA1_DIGEST_SIZE; 1454 break; 1455 case SHA224_DIGEST_SIZE: 1456 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256; 1457 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA224; 1458 params->result_size = SHA256_DIGEST_SIZE; 1459 break; 1460 case SHA256_DIGEST_SIZE: 1461 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256; 1462 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA256; 1463 params->result_size = SHA256_DIGEST_SIZE; 1464 break; 1465 case SHA384_DIGEST_SIZE: 1466 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_512; 1467 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA512_384; 1468 params->result_size = SHA512_DIGEST_SIZE; 1469 break; 1470 case SHA512_DIGEST_SIZE: 1471 params->mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_512; 1472 params->auth_mode = CHCR_SCMD_AUTH_MODE_SHA512_512; 1473 params->result_size = SHA512_DIGEST_SIZE; 1474 break; 1475 default: 1476 pr_err("chcr : ERROR, unsupported digest size\n"); 1477 return -EINVAL; 1478 } 1479 return 0; 1480 } 1481 1482 static inline void chcr_free_shash(struct crypto_shash *base_hash) 1483 { 1484 crypto_free_shash(base_hash); 1485 } 1486 1487 /** 1488 * create_hash_wr - Create hash work request 1489 * @req - Cipher req base 1490 */ 1491 static struct sk_buff *create_hash_wr(struct ahash_request *req, 1492 struct hash_wr_param *param) 1493 { 1494 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req); 1495 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); 1496 struct hmac_ctx *hmacctx = HMAC_CTX(h_ctx(tfm)); 1497 struct sk_buff *skb = NULL; 1498 struct uld_ctx *u_ctx = ULD_CTX(h_ctx(tfm)); 1499 struct chcr_wr *chcr_req; 1500 struct ulptx_sgl *ulptx; 1501 unsigned int nents = 0, transhdr_len; 1502 unsigned int temp = 0; 1503 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL : 1504 GFP_ATOMIC; 1505 struct adapter *adap = padap(h_ctx(tfm)->dev); 1506 int error = 0; 1507 1508 transhdr_len = HASH_TRANSHDR_SIZE(param->kctx_len); 1509 req_ctx->hctx_wr.imm = (transhdr_len + param->bfr_len + 1510 param->sg_len) <= SGE_MAX_WR_LEN; 1511 nents = sg_nents_xlen(req_ctx->hctx_wr.srcsg, param->sg_len, 1512 CHCR_SRC_SG_SIZE, req_ctx->hctx_wr.src_ofst); 1513 nents += param->bfr_len ? 1 : 0; 1514 transhdr_len += req_ctx->hctx_wr.imm ? roundup(param->bfr_len + 1515 param->sg_len, 16) : (sgl_len(nents) * 8); 1516 transhdr_len = roundup(transhdr_len, 16); 1517 1518 skb = alloc_skb(transhdr_len, flags); 1519 if (!skb) 1520 return ERR_PTR(-ENOMEM); 1521 chcr_req = __skb_put_zero(skb, transhdr_len); 1522 1523 chcr_req->sec_cpl.op_ivinsrtofst = 1524 FILL_SEC_CPL_OP_IVINSR(h_ctx(tfm)->tx_chan_id, 2, 0); 1525 chcr_req->sec_cpl.pldlen = htonl(param->bfr_len + param->sg_len); 1526 1527 chcr_req->sec_cpl.aadstart_cipherstop_hi = 1528 FILL_SEC_CPL_CIPHERSTOP_HI(0, 0, 0, 0); 1529 chcr_req->sec_cpl.cipherstop_lo_authinsert = 1530 FILL_SEC_CPL_AUTHINSERT(0, 1, 0, 0); 1531 chcr_req->sec_cpl.seqno_numivs = 1532 FILL_SEC_CPL_SCMD0_SEQNO(0, 0, 0, param->alg_prm.auth_mode, 1533 param->opad_needed, 0); 1534 1535 chcr_req->sec_cpl.ivgen_hdrlen = 1536 FILL_SEC_CPL_IVGEN_HDRLEN(param->last, param->more, 0, 1, 0, 0); 1537 1538 memcpy(chcr_req->key_ctx.key, req_ctx->partial_hash, 1539 param->alg_prm.result_size); 1540 1541 if (param->opad_needed) 1542 memcpy(chcr_req->key_ctx.key + 1543 ((param->alg_prm.result_size <= 32) ? 32 : 1544 CHCR_HASH_MAX_DIGEST_SIZE), 1545 hmacctx->opad, param->alg_prm.result_size); 1546 1547 chcr_req->key_ctx.ctx_hdr = FILL_KEY_CTX_HDR(CHCR_KEYCTX_NO_KEY, 1548 param->alg_prm.mk_size, 0, 1549 param->opad_needed, 1550 ((param->kctx_len + 1551 sizeof(chcr_req->key_ctx)) >> 4)); 1552 chcr_req->sec_cpl.scmd1 = cpu_to_be64((u64)param->scmd1); 1553 ulptx = (struct ulptx_sgl *)((u8 *)(chcr_req + 1) + param->kctx_len + 1554 DUMMY_BYTES); 1555 if (param->bfr_len != 0) { 1556 req_ctx->hctx_wr.dma_addr = 1557 dma_map_single(&u_ctx->lldi.pdev->dev, req_ctx->reqbfr, 1558 param->bfr_len, DMA_TO_DEVICE); 1559 if (dma_mapping_error(&u_ctx->lldi.pdev->dev, 1560 req_ctx->hctx_wr. dma_addr)) { 1561 error = -ENOMEM; 1562 goto err; 1563 } 1564 req_ctx->hctx_wr.dma_len = param->bfr_len; 1565 } else { 1566 req_ctx->hctx_wr.dma_addr = 0; 1567 } 1568 chcr_add_hash_src_ent(req, ulptx, param); 1569 /* Request upto max wr size */ 1570 temp = param->kctx_len + DUMMY_BYTES + (req_ctx->hctx_wr.imm ? 1571 (param->sg_len + param->bfr_len) : 0); 1572 atomic_inc(&adap->chcr_stats.digest_rqst); 1573 create_wreq(h_ctx(tfm), chcr_req, &req->base, req_ctx->hctx_wr.imm, 1574 param->hash_size, transhdr_len, 1575 temp, 0); 1576 req_ctx->hctx_wr.skb = skb; 1577 return skb; 1578 err: 1579 kfree_skb(skb); 1580 return ERR_PTR(error); 1581 } 1582 1583 static int chcr_ahash_update(struct ahash_request *req) 1584 { 1585 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req); 1586 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req); 1587 struct uld_ctx *u_ctx = NULL; 1588 struct chcr_dev *dev = h_ctx(rtfm)->dev; 1589 struct sk_buff *skb; 1590 u8 remainder = 0, bs; 1591 unsigned int nbytes = req->nbytes; 1592 struct hash_wr_param params; 1593 int error, isfull = 0; 1594 1595 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm)); 1596 u_ctx = ULD_CTX(h_ctx(rtfm)); 1597 1598 if (nbytes + req_ctx->reqlen >= bs) { 1599 remainder = (nbytes + req_ctx->reqlen) % bs; 1600 nbytes = nbytes + req_ctx->reqlen - remainder; 1601 } else { 1602 sg_pcopy_to_buffer(req->src, sg_nents(req->src), req_ctx->reqbfr 1603 + req_ctx->reqlen, nbytes, 0); 1604 req_ctx->reqlen += nbytes; 1605 return 0; 1606 } 1607 error = chcr_inc_wrcount(dev); 1608 if (error) 1609 return -ENXIO; 1610 /* Detach state for CHCR means lldi or padap is freed. Increasing 1611 * inflight count for dev guarantees that lldi and padap is valid 1612 */ 1613 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0], 1614 h_ctx(rtfm)->tx_qidx))) { 1615 isfull = 1; 1616 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) { 1617 error = -ENOSPC; 1618 goto err; 1619 } 1620 } 1621 1622 chcr_init_hctx_per_wr(req_ctx); 1623 error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req); 1624 if (error) { 1625 error = -ENOMEM; 1626 goto err; 1627 } 1628 get_alg_config(¶ms.alg_prm, crypto_ahash_digestsize(rtfm)); 1629 params.kctx_len = roundup(params.alg_prm.result_size, 16); 1630 params.sg_len = chcr_hash_ent_in_wr(req->src, !!req_ctx->reqlen, 1631 HASH_SPACE_LEFT(params.kctx_len), 0); 1632 if (params.sg_len > req->nbytes) 1633 params.sg_len = req->nbytes; 1634 params.sg_len = rounddown(params.sg_len + req_ctx->reqlen, bs) - 1635 req_ctx->reqlen; 1636 params.opad_needed = 0; 1637 params.more = 1; 1638 params.last = 0; 1639 params.bfr_len = req_ctx->reqlen; 1640 params.scmd1 = 0; 1641 req_ctx->hctx_wr.srcsg = req->src; 1642 1643 params.hash_size = params.alg_prm.result_size; 1644 req_ctx->data_len += params.sg_len + params.bfr_len; 1645 skb = create_hash_wr(req, ¶ms); 1646 if (IS_ERR(skb)) { 1647 error = PTR_ERR(skb); 1648 goto unmap; 1649 } 1650 1651 req_ctx->hctx_wr.processed += params.sg_len; 1652 if (remainder) { 1653 /* Swap buffers */ 1654 swap(req_ctx->reqbfr, req_ctx->skbfr); 1655 sg_pcopy_to_buffer(req->src, sg_nents(req->src), 1656 req_ctx->reqbfr, remainder, req->nbytes - 1657 remainder); 1658 } 1659 req_ctx->reqlen = remainder; 1660 skb->dev = u_ctx->lldi.ports[0]; 1661 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx); 1662 chcr_send_wr(skb); 1663 1664 return isfull ? -EBUSY : -EINPROGRESS; 1665 unmap: 1666 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req); 1667 err: 1668 chcr_dec_wrcount(dev); 1669 return error; 1670 } 1671 1672 static void create_last_hash_block(char *bfr_ptr, unsigned int bs, u64 scmd1) 1673 { 1674 memset(bfr_ptr, 0, bs); 1675 *bfr_ptr = 0x80; 1676 if (bs == 64) 1677 *(__be64 *)(bfr_ptr + 56) = cpu_to_be64(scmd1 << 3); 1678 else 1679 *(__be64 *)(bfr_ptr + 120) = cpu_to_be64(scmd1 << 3); 1680 } 1681 1682 static int chcr_ahash_final(struct ahash_request *req) 1683 { 1684 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req); 1685 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req); 1686 struct chcr_dev *dev = h_ctx(rtfm)->dev; 1687 struct hash_wr_param params; 1688 struct sk_buff *skb; 1689 struct uld_ctx *u_ctx = NULL; 1690 u8 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm)); 1691 int error = -EINVAL; 1692 1693 error = chcr_inc_wrcount(dev); 1694 if (error) 1695 return -ENXIO; 1696 1697 chcr_init_hctx_per_wr(req_ctx); 1698 u_ctx = ULD_CTX(h_ctx(rtfm)); 1699 if (is_hmac(crypto_ahash_tfm(rtfm))) 1700 params.opad_needed = 1; 1701 else 1702 params.opad_needed = 0; 1703 params.sg_len = 0; 1704 req_ctx->hctx_wr.isfinal = 1; 1705 get_alg_config(¶ms.alg_prm, crypto_ahash_digestsize(rtfm)); 1706 params.kctx_len = roundup(params.alg_prm.result_size, 16); 1707 if (is_hmac(crypto_ahash_tfm(rtfm))) { 1708 params.opad_needed = 1; 1709 params.kctx_len *= 2; 1710 } else { 1711 params.opad_needed = 0; 1712 } 1713 1714 req_ctx->hctx_wr.result = 1; 1715 params.bfr_len = req_ctx->reqlen; 1716 req_ctx->data_len += params.bfr_len + params.sg_len; 1717 req_ctx->hctx_wr.srcsg = req->src; 1718 if (req_ctx->reqlen == 0) { 1719 create_last_hash_block(req_ctx->reqbfr, bs, req_ctx->data_len); 1720 params.last = 0; 1721 params.more = 1; 1722 params.scmd1 = 0; 1723 params.bfr_len = bs; 1724 1725 } else { 1726 params.scmd1 = req_ctx->data_len; 1727 params.last = 1; 1728 params.more = 0; 1729 } 1730 params.hash_size = crypto_ahash_digestsize(rtfm); 1731 skb = create_hash_wr(req, ¶ms); 1732 if (IS_ERR(skb)) { 1733 error = PTR_ERR(skb); 1734 goto err; 1735 } 1736 req_ctx->reqlen = 0; 1737 skb->dev = u_ctx->lldi.ports[0]; 1738 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx); 1739 chcr_send_wr(skb); 1740 return -EINPROGRESS; 1741 err: 1742 chcr_dec_wrcount(dev); 1743 return error; 1744 } 1745 1746 static int chcr_ahash_finup(struct ahash_request *req) 1747 { 1748 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req); 1749 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req); 1750 struct chcr_dev *dev = h_ctx(rtfm)->dev; 1751 struct uld_ctx *u_ctx = NULL; 1752 struct sk_buff *skb; 1753 struct hash_wr_param params; 1754 u8 bs; 1755 int error, isfull = 0; 1756 1757 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm)); 1758 u_ctx = ULD_CTX(h_ctx(rtfm)); 1759 error = chcr_inc_wrcount(dev); 1760 if (error) 1761 return -ENXIO; 1762 1763 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0], 1764 h_ctx(rtfm)->tx_qidx))) { 1765 isfull = 1; 1766 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) { 1767 error = -ENOSPC; 1768 goto err; 1769 } 1770 } 1771 chcr_init_hctx_per_wr(req_ctx); 1772 error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req); 1773 if (error) { 1774 error = -ENOMEM; 1775 goto err; 1776 } 1777 1778 get_alg_config(¶ms.alg_prm, crypto_ahash_digestsize(rtfm)); 1779 params.kctx_len = roundup(params.alg_prm.result_size, 16); 1780 if (is_hmac(crypto_ahash_tfm(rtfm))) { 1781 params.kctx_len *= 2; 1782 params.opad_needed = 1; 1783 } else { 1784 params.opad_needed = 0; 1785 } 1786 1787 params.sg_len = chcr_hash_ent_in_wr(req->src, !!req_ctx->reqlen, 1788 HASH_SPACE_LEFT(params.kctx_len), 0); 1789 if (params.sg_len < req->nbytes) { 1790 if (is_hmac(crypto_ahash_tfm(rtfm))) { 1791 params.kctx_len /= 2; 1792 params.opad_needed = 0; 1793 } 1794 params.last = 0; 1795 params.more = 1; 1796 params.sg_len = rounddown(params.sg_len + req_ctx->reqlen, bs) 1797 - req_ctx->reqlen; 1798 params.hash_size = params.alg_prm.result_size; 1799 params.scmd1 = 0; 1800 } else { 1801 params.last = 1; 1802 params.more = 0; 1803 params.sg_len = req->nbytes; 1804 params.hash_size = crypto_ahash_digestsize(rtfm); 1805 params.scmd1 = req_ctx->data_len + req_ctx->reqlen + 1806 params.sg_len; 1807 } 1808 params.bfr_len = req_ctx->reqlen; 1809 req_ctx->data_len += params.bfr_len + params.sg_len; 1810 req_ctx->hctx_wr.result = 1; 1811 req_ctx->hctx_wr.srcsg = req->src; 1812 if ((req_ctx->reqlen + req->nbytes) == 0) { 1813 create_last_hash_block(req_ctx->reqbfr, bs, req_ctx->data_len); 1814 params.last = 0; 1815 params.more = 1; 1816 params.scmd1 = 0; 1817 params.bfr_len = bs; 1818 } 1819 skb = create_hash_wr(req, ¶ms); 1820 if (IS_ERR(skb)) { 1821 error = PTR_ERR(skb); 1822 goto unmap; 1823 } 1824 req_ctx->reqlen = 0; 1825 req_ctx->hctx_wr.processed += params.sg_len; 1826 skb->dev = u_ctx->lldi.ports[0]; 1827 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx); 1828 chcr_send_wr(skb); 1829 1830 return isfull ? -EBUSY : -EINPROGRESS; 1831 unmap: 1832 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req); 1833 err: 1834 chcr_dec_wrcount(dev); 1835 return error; 1836 } 1837 1838 static int chcr_ahash_digest(struct ahash_request *req) 1839 { 1840 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req); 1841 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req); 1842 struct chcr_dev *dev = h_ctx(rtfm)->dev; 1843 struct uld_ctx *u_ctx = NULL; 1844 struct sk_buff *skb; 1845 struct hash_wr_param params; 1846 u8 bs; 1847 int error, isfull = 0; 1848 1849 rtfm->init(req); 1850 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm)); 1851 error = chcr_inc_wrcount(dev); 1852 if (error) 1853 return -ENXIO; 1854 1855 u_ctx = ULD_CTX(h_ctx(rtfm)); 1856 if (unlikely(cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0], 1857 h_ctx(rtfm)->tx_qidx))) { 1858 isfull = 1; 1859 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) { 1860 error = -ENOSPC; 1861 goto err; 1862 } 1863 } 1864 1865 chcr_init_hctx_per_wr(req_ctx); 1866 error = chcr_hash_dma_map(&u_ctx->lldi.pdev->dev, req); 1867 if (error) { 1868 error = -ENOMEM; 1869 goto err; 1870 } 1871 1872 get_alg_config(¶ms.alg_prm, crypto_ahash_digestsize(rtfm)); 1873 params.kctx_len = roundup(params.alg_prm.result_size, 16); 1874 if (is_hmac(crypto_ahash_tfm(rtfm))) { 1875 params.kctx_len *= 2; 1876 params.opad_needed = 1; 1877 } else { 1878 params.opad_needed = 0; 1879 } 1880 params.sg_len = chcr_hash_ent_in_wr(req->src, !!req_ctx->reqlen, 1881 HASH_SPACE_LEFT(params.kctx_len), 0); 1882 if (params.sg_len < req->nbytes) { 1883 if (is_hmac(crypto_ahash_tfm(rtfm))) { 1884 params.kctx_len /= 2; 1885 params.opad_needed = 0; 1886 } 1887 params.last = 0; 1888 params.more = 1; 1889 params.scmd1 = 0; 1890 params.sg_len = rounddown(params.sg_len, bs); 1891 params.hash_size = params.alg_prm.result_size; 1892 } else { 1893 params.sg_len = req->nbytes; 1894 params.hash_size = crypto_ahash_digestsize(rtfm); 1895 params.last = 1; 1896 params.more = 0; 1897 params.scmd1 = req->nbytes + req_ctx->data_len; 1898 1899 } 1900 params.bfr_len = 0; 1901 req_ctx->hctx_wr.result = 1; 1902 req_ctx->hctx_wr.srcsg = req->src; 1903 req_ctx->data_len += params.bfr_len + params.sg_len; 1904 1905 if (req->nbytes == 0) { 1906 create_last_hash_block(req_ctx->reqbfr, bs, 0); 1907 params.more = 1; 1908 params.bfr_len = bs; 1909 } 1910 1911 skb = create_hash_wr(req, ¶ms); 1912 if (IS_ERR(skb)) { 1913 error = PTR_ERR(skb); 1914 goto unmap; 1915 } 1916 req_ctx->hctx_wr.processed += params.sg_len; 1917 skb->dev = u_ctx->lldi.ports[0]; 1918 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx); 1919 chcr_send_wr(skb); 1920 return isfull ? -EBUSY : -EINPROGRESS; 1921 unmap: 1922 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req); 1923 err: 1924 chcr_dec_wrcount(dev); 1925 return error; 1926 } 1927 1928 static int chcr_ahash_continue(struct ahash_request *req) 1929 { 1930 struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req); 1931 struct chcr_hctx_per_wr *hctx_wr = &reqctx->hctx_wr; 1932 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(req); 1933 struct uld_ctx *u_ctx = NULL; 1934 struct sk_buff *skb; 1935 struct hash_wr_param params; 1936 u8 bs; 1937 int error; 1938 1939 bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm)); 1940 u_ctx = ULD_CTX(h_ctx(rtfm)); 1941 get_alg_config(¶ms.alg_prm, crypto_ahash_digestsize(rtfm)); 1942 params.kctx_len = roundup(params.alg_prm.result_size, 16); 1943 if (is_hmac(crypto_ahash_tfm(rtfm))) { 1944 params.kctx_len *= 2; 1945 params.opad_needed = 1; 1946 } else { 1947 params.opad_needed = 0; 1948 } 1949 params.sg_len = chcr_hash_ent_in_wr(hctx_wr->srcsg, 0, 1950 HASH_SPACE_LEFT(params.kctx_len), 1951 hctx_wr->src_ofst); 1952 if ((params.sg_len + hctx_wr->processed) > req->nbytes) 1953 params.sg_len = req->nbytes - hctx_wr->processed; 1954 if (!hctx_wr->result || 1955 ((params.sg_len + hctx_wr->processed) < req->nbytes)) { 1956 if (is_hmac(crypto_ahash_tfm(rtfm))) { 1957 params.kctx_len /= 2; 1958 params.opad_needed = 0; 1959 } 1960 params.last = 0; 1961 params.more = 1; 1962 params.sg_len = rounddown(params.sg_len, bs); 1963 params.hash_size = params.alg_prm.result_size; 1964 params.scmd1 = 0; 1965 } else { 1966 params.last = 1; 1967 params.more = 0; 1968 params.hash_size = crypto_ahash_digestsize(rtfm); 1969 params.scmd1 = reqctx->data_len + params.sg_len; 1970 } 1971 params.bfr_len = 0; 1972 reqctx->data_len += params.sg_len; 1973 skb = create_hash_wr(req, ¶ms); 1974 if (IS_ERR(skb)) { 1975 error = PTR_ERR(skb); 1976 goto err; 1977 } 1978 hctx_wr->processed += params.sg_len; 1979 skb->dev = u_ctx->lldi.ports[0]; 1980 set_wr_txq(skb, CPL_PRIORITY_DATA, h_ctx(rtfm)->tx_qidx); 1981 chcr_send_wr(skb); 1982 return 0; 1983 err: 1984 return error; 1985 } 1986 1987 static inline void chcr_handle_ahash_resp(struct ahash_request *req, 1988 unsigned char *input, 1989 int err) 1990 { 1991 struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req); 1992 struct chcr_hctx_per_wr *hctx_wr = &reqctx->hctx_wr; 1993 int digestsize, updated_digestsize; 1994 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); 1995 struct uld_ctx *u_ctx = ULD_CTX(h_ctx(tfm)); 1996 struct chcr_dev *dev = h_ctx(tfm)->dev; 1997 1998 if (input == NULL) 1999 goto out; 2000 digestsize = crypto_ahash_digestsize(crypto_ahash_reqtfm(req)); 2001 updated_digestsize = digestsize; 2002 if (digestsize == SHA224_DIGEST_SIZE) 2003 updated_digestsize = SHA256_DIGEST_SIZE; 2004 else if (digestsize == SHA384_DIGEST_SIZE) 2005 updated_digestsize = SHA512_DIGEST_SIZE; 2006 2007 if (hctx_wr->dma_addr) { 2008 dma_unmap_single(&u_ctx->lldi.pdev->dev, hctx_wr->dma_addr, 2009 hctx_wr->dma_len, DMA_TO_DEVICE); 2010 hctx_wr->dma_addr = 0; 2011 } 2012 if (hctx_wr->isfinal || ((hctx_wr->processed + reqctx->reqlen) == 2013 req->nbytes)) { 2014 if (hctx_wr->result == 1) { 2015 hctx_wr->result = 0; 2016 memcpy(req->result, input + sizeof(struct cpl_fw6_pld), 2017 digestsize); 2018 } else { 2019 memcpy(reqctx->partial_hash, 2020 input + sizeof(struct cpl_fw6_pld), 2021 updated_digestsize); 2022 2023 } 2024 goto unmap; 2025 } 2026 memcpy(reqctx->partial_hash, input + sizeof(struct cpl_fw6_pld), 2027 updated_digestsize); 2028 2029 err = chcr_ahash_continue(req); 2030 if (err) 2031 goto unmap; 2032 return; 2033 unmap: 2034 if (hctx_wr->is_sg_map) 2035 chcr_hash_dma_unmap(&u_ctx->lldi.pdev->dev, req); 2036 2037 2038 out: 2039 chcr_dec_wrcount(dev); 2040 req->base.complete(&req->base, err); 2041 } 2042 2043 /* 2044 * chcr_handle_resp - Unmap the DMA buffers associated with the request 2045 * @req: crypto request 2046 */ 2047 int chcr_handle_resp(struct crypto_async_request *req, unsigned char *input, 2048 int err) 2049 { 2050 struct crypto_tfm *tfm = req->tfm; 2051 struct chcr_context *ctx = crypto_tfm_ctx(tfm); 2052 struct adapter *adap = padap(ctx->dev); 2053 2054 switch (tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK) { 2055 case CRYPTO_ALG_TYPE_AEAD: 2056 err = chcr_handle_aead_resp(aead_request_cast(req), input, err); 2057 break; 2058 2059 case CRYPTO_ALG_TYPE_ABLKCIPHER: 2060 chcr_handle_cipher_resp(ablkcipher_request_cast(req), 2061 input, err); 2062 break; 2063 case CRYPTO_ALG_TYPE_AHASH: 2064 chcr_handle_ahash_resp(ahash_request_cast(req), input, err); 2065 } 2066 atomic_inc(&adap->chcr_stats.complete); 2067 return err; 2068 } 2069 static int chcr_ahash_export(struct ahash_request *areq, void *out) 2070 { 2071 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); 2072 struct chcr_ahash_req_ctx *state = out; 2073 2074 state->reqlen = req_ctx->reqlen; 2075 state->data_len = req_ctx->data_len; 2076 memcpy(state->bfr1, req_ctx->reqbfr, req_ctx->reqlen); 2077 memcpy(state->partial_hash, req_ctx->partial_hash, 2078 CHCR_HASH_MAX_DIGEST_SIZE); 2079 chcr_init_hctx_per_wr(state); 2080 return 0; 2081 } 2082 2083 static int chcr_ahash_import(struct ahash_request *areq, const void *in) 2084 { 2085 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); 2086 struct chcr_ahash_req_ctx *state = (struct chcr_ahash_req_ctx *)in; 2087 2088 req_ctx->reqlen = state->reqlen; 2089 req_ctx->data_len = state->data_len; 2090 req_ctx->reqbfr = req_ctx->bfr1; 2091 req_ctx->skbfr = req_ctx->bfr2; 2092 memcpy(req_ctx->bfr1, state->bfr1, CHCR_HASH_MAX_BLOCK_SIZE_128); 2093 memcpy(req_ctx->partial_hash, state->partial_hash, 2094 CHCR_HASH_MAX_DIGEST_SIZE); 2095 chcr_init_hctx_per_wr(req_ctx); 2096 return 0; 2097 } 2098 2099 static int chcr_ahash_setkey(struct crypto_ahash *tfm, const u8 *key, 2100 unsigned int keylen) 2101 { 2102 struct hmac_ctx *hmacctx = HMAC_CTX(h_ctx(tfm)); 2103 unsigned int digestsize = crypto_ahash_digestsize(tfm); 2104 unsigned int bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm)); 2105 unsigned int i, err = 0, updated_digestsize; 2106 2107 SHASH_DESC_ON_STACK(shash, hmacctx->base_hash); 2108 2109 /* use the key to calculate the ipad and opad. ipad will sent with the 2110 * first request's data. opad will be sent with the final hash result 2111 * ipad in hmacctx->ipad and opad in hmacctx->opad location 2112 */ 2113 shash->tfm = hmacctx->base_hash; 2114 if (keylen > bs) { 2115 err = crypto_shash_digest(shash, key, keylen, 2116 hmacctx->ipad); 2117 if (err) 2118 goto out; 2119 keylen = digestsize; 2120 } else { 2121 memcpy(hmacctx->ipad, key, keylen); 2122 } 2123 memset(hmacctx->ipad + keylen, 0, bs - keylen); 2124 memcpy(hmacctx->opad, hmacctx->ipad, bs); 2125 2126 for (i = 0; i < bs / sizeof(int); i++) { 2127 *((unsigned int *)(&hmacctx->ipad) + i) ^= IPAD_DATA; 2128 *((unsigned int *)(&hmacctx->opad) + i) ^= OPAD_DATA; 2129 } 2130 2131 updated_digestsize = digestsize; 2132 if (digestsize == SHA224_DIGEST_SIZE) 2133 updated_digestsize = SHA256_DIGEST_SIZE; 2134 else if (digestsize == SHA384_DIGEST_SIZE) 2135 updated_digestsize = SHA512_DIGEST_SIZE; 2136 err = chcr_compute_partial_hash(shash, hmacctx->ipad, 2137 hmacctx->ipad, digestsize); 2138 if (err) 2139 goto out; 2140 chcr_change_order(hmacctx->ipad, updated_digestsize); 2141 2142 err = chcr_compute_partial_hash(shash, hmacctx->opad, 2143 hmacctx->opad, digestsize); 2144 if (err) 2145 goto out; 2146 chcr_change_order(hmacctx->opad, updated_digestsize); 2147 out: 2148 return err; 2149 } 2150 2151 static int chcr_aes_xts_setkey(struct crypto_ablkcipher *cipher, const u8 *key, 2152 unsigned int key_len) 2153 { 2154 struct ablk_ctx *ablkctx = ABLK_CTX(c_ctx(cipher)); 2155 unsigned short context_size = 0; 2156 int err; 2157 2158 err = chcr_cipher_fallback_setkey(cipher, key, key_len); 2159 if (err) 2160 goto badkey_err; 2161 2162 memcpy(ablkctx->key, key, key_len); 2163 ablkctx->enckey_len = key_len; 2164 get_aes_decrypt_key(ablkctx->rrkey, ablkctx->key, key_len << 2); 2165 context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD + key_len) >> 4; 2166 ablkctx->key_ctx_hdr = 2167 FILL_KEY_CTX_HDR((key_len == AES_KEYSIZE_256) ? 2168 CHCR_KEYCTX_CIPHER_KEY_SIZE_128 : 2169 CHCR_KEYCTX_CIPHER_KEY_SIZE_256, 2170 CHCR_KEYCTX_NO_KEY, 1, 2171 0, context_size); 2172 ablkctx->ciph_mode = CHCR_SCMD_CIPHER_MODE_AES_XTS; 2173 return 0; 2174 badkey_err: 2175 crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN); 2176 ablkctx->enckey_len = 0; 2177 2178 return err; 2179 } 2180 2181 static int chcr_sha_init(struct ahash_request *areq) 2182 { 2183 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); 2184 struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq); 2185 int digestsize = crypto_ahash_digestsize(tfm); 2186 2187 req_ctx->data_len = 0; 2188 req_ctx->reqlen = 0; 2189 req_ctx->reqbfr = req_ctx->bfr1; 2190 req_ctx->skbfr = req_ctx->bfr2; 2191 copy_hash_init_values(req_ctx->partial_hash, digestsize); 2192 2193 return 0; 2194 } 2195 2196 static int chcr_sha_cra_init(struct crypto_tfm *tfm) 2197 { 2198 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), 2199 sizeof(struct chcr_ahash_req_ctx)); 2200 return chcr_device_init(crypto_tfm_ctx(tfm)); 2201 } 2202 2203 static int chcr_hmac_init(struct ahash_request *areq) 2204 { 2205 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); 2206 struct crypto_ahash *rtfm = crypto_ahash_reqtfm(areq); 2207 struct hmac_ctx *hmacctx = HMAC_CTX(h_ctx(rtfm)); 2208 unsigned int digestsize = crypto_ahash_digestsize(rtfm); 2209 unsigned int bs = crypto_tfm_alg_blocksize(crypto_ahash_tfm(rtfm)); 2210 2211 chcr_sha_init(areq); 2212 req_ctx->data_len = bs; 2213 if (is_hmac(crypto_ahash_tfm(rtfm))) { 2214 if (digestsize == SHA224_DIGEST_SIZE) 2215 memcpy(req_ctx->partial_hash, hmacctx->ipad, 2216 SHA256_DIGEST_SIZE); 2217 else if (digestsize == SHA384_DIGEST_SIZE) 2218 memcpy(req_ctx->partial_hash, hmacctx->ipad, 2219 SHA512_DIGEST_SIZE); 2220 else 2221 memcpy(req_ctx->partial_hash, hmacctx->ipad, 2222 digestsize); 2223 } 2224 return 0; 2225 } 2226 2227 static int chcr_hmac_cra_init(struct crypto_tfm *tfm) 2228 { 2229 struct chcr_context *ctx = crypto_tfm_ctx(tfm); 2230 struct hmac_ctx *hmacctx = HMAC_CTX(ctx); 2231 unsigned int digestsize = 2232 crypto_ahash_digestsize(__crypto_ahash_cast(tfm)); 2233 2234 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), 2235 sizeof(struct chcr_ahash_req_ctx)); 2236 hmacctx->base_hash = chcr_alloc_shash(digestsize); 2237 if (IS_ERR(hmacctx->base_hash)) 2238 return PTR_ERR(hmacctx->base_hash); 2239 return chcr_device_init(crypto_tfm_ctx(tfm)); 2240 } 2241 2242 static void chcr_hmac_cra_exit(struct crypto_tfm *tfm) 2243 { 2244 struct chcr_context *ctx = crypto_tfm_ctx(tfm); 2245 struct hmac_ctx *hmacctx = HMAC_CTX(ctx); 2246 2247 if (hmacctx->base_hash) { 2248 chcr_free_shash(hmacctx->base_hash); 2249 hmacctx->base_hash = NULL; 2250 } 2251 } 2252 2253 inline void chcr_aead_common_exit(struct aead_request *req) 2254 { 2255 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); 2256 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 2257 struct uld_ctx *u_ctx = ULD_CTX(a_ctx(tfm)); 2258 2259 chcr_aead_dma_unmap(&u_ctx->lldi.pdev->dev, req, reqctx->op); 2260 } 2261 2262 static int chcr_aead_common_init(struct aead_request *req) 2263 { 2264 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 2265 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 2266 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); 2267 unsigned int authsize = crypto_aead_authsize(tfm); 2268 int error = -EINVAL; 2269 2270 /* validate key size */ 2271 if (aeadctx->enckey_len == 0) 2272 goto err; 2273 if (reqctx->op && req->cryptlen < authsize) 2274 goto err; 2275 if (reqctx->b0_len) 2276 reqctx->scratch_pad = reqctx->iv + IV; 2277 else 2278 reqctx->scratch_pad = NULL; 2279 2280 error = chcr_aead_dma_map(&ULD_CTX(a_ctx(tfm))->lldi.pdev->dev, req, 2281 reqctx->op); 2282 if (error) { 2283 error = -ENOMEM; 2284 goto err; 2285 } 2286 2287 return 0; 2288 err: 2289 return error; 2290 } 2291 2292 static int chcr_aead_need_fallback(struct aead_request *req, int dst_nents, 2293 int aadmax, int wrlen, 2294 unsigned short op_type) 2295 { 2296 unsigned int authsize = crypto_aead_authsize(crypto_aead_reqtfm(req)); 2297 2298 if (((req->cryptlen - (op_type ? authsize : 0)) == 0) || 2299 dst_nents > MAX_DSGL_ENT || 2300 (req->assoclen > aadmax) || 2301 (wrlen > SGE_MAX_WR_LEN)) 2302 return 1; 2303 return 0; 2304 } 2305 2306 static int chcr_aead_fallback(struct aead_request *req, unsigned short op_type) 2307 { 2308 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 2309 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 2310 struct aead_request *subreq = aead_request_ctx(req); 2311 2312 aead_request_set_tfm(subreq, aeadctx->sw_cipher); 2313 aead_request_set_callback(subreq, req->base.flags, 2314 req->base.complete, req->base.data); 2315 aead_request_set_crypt(subreq, req->src, req->dst, req->cryptlen, 2316 req->iv); 2317 aead_request_set_ad(subreq, req->assoclen); 2318 return op_type ? crypto_aead_decrypt(subreq) : 2319 crypto_aead_encrypt(subreq); 2320 } 2321 2322 static struct sk_buff *create_authenc_wr(struct aead_request *req, 2323 unsigned short qid, 2324 int size) 2325 { 2326 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 2327 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 2328 struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx); 2329 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); 2330 struct sk_buff *skb = NULL; 2331 struct chcr_wr *chcr_req; 2332 struct cpl_rx_phys_dsgl *phys_cpl; 2333 struct ulptx_sgl *ulptx; 2334 unsigned int transhdr_len; 2335 unsigned int dst_size = 0, temp, subtype = get_aead_subtype(tfm); 2336 unsigned int kctx_len = 0, dnents, snents; 2337 unsigned int authsize = crypto_aead_authsize(tfm); 2338 int error = -EINVAL; 2339 u8 *ivptr; 2340 int null = 0; 2341 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL : 2342 GFP_ATOMIC; 2343 struct adapter *adap = padap(a_ctx(tfm)->dev); 2344 2345 if (req->cryptlen == 0) 2346 return NULL; 2347 2348 reqctx->b0_len = 0; 2349 error = chcr_aead_common_init(req); 2350 if (error) 2351 return ERR_PTR(error); 2352 2353 if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL || 2354 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) { 2355 null = 1; 2356 } 2357 dnents = sg_nents_xlen(req->dst, req->assoclen + req->cryptlen + 2358 (reqctx->op ? -authsize : authsize), CHCR_DST_SG_SIZE, 0); 2359 dnents += MIN_AUTH_SG; // For IV 2360 snents = sg_nents_xlen(req->src, req->assoclen + req->cryptlen, 2361 CHCR_SRC_SG_SIZE, 0); 2362 dst_size = get_space_for_phys_dsgl(dnents); 2363 kctx_len = (ntohl(KEY_CONTEXT_CTX_LEN_V(aeadctx->key_ctx_hdr)) << 4) 2364 - sizeof(chcr_req->key_ctx); 2365 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size); 2366 reqctx->imm = (transhdr_len + req->assoclen + req->cryptlen) < 2367 SGE_MAX_WR_LEN; 2368 temp = reqctx->imm ? roundup(req->assoclen + req->cryptlen, 16) 2369 : (sgl_len(snents) * 8); 2370 transhdr_len += temp; 2371 transhdr_len = roundup(transhdr_len, 16); 2372 2373 if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE, 2374 transhdr_len, reqctx->op)) { 2375 atomic_inc(&adap->chcr_stats.fallback); 2376 chcr_aead_common_exit(req); 2377 return ERR_PTR(chcr_aead_fallback(req, reqctx->op)); 2378 } 2379 skb = alloc_skb(transhdr_len, flags); 2380 if (!skb) { 2381 error = -ENOMEM; 2382 goto err; 2383 } 2384 2385 chcr_req = __skb_put_zero(skb, transhdr_len); 2386 2387 temp = (reqctx->op == CHCR_ENCRYPT_OP) ? 0 : authsize; 2388 2389 /* 2390 * Input order is AAD,IV and Payload. where IV should be included as 2391 * the part of authdata. All other fields should be filled according 2392 * to the hardware spec 2393 */ 2394 chcr_req->sec_cpl.op_ivinsrtofst = 2395 FILL_SEC_CPL_OP_IVINSR(a_ctx(tfm)->tx_chan_id, 2, 1); 2396 chcr_req->sec_cpl.pldlen = htonl(req->assoclen + IV + req->cryptlen); 2397 chcr_req->sec_cpl.aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI( 2398 null ? 0 : 1 + IV, 2399 null ? 0 : IV + req->assoclen, 2400 req->assoclen + IV + 1, 2401 (temp & 0x1F0) >> 4); 2402 chcr_req->sec_cpl.cipherstop_lo_authinsert = FILL_SEC_CPL_AUTHINSERT( 2403 temp & 0xF, 2404 null ? 0 : req->assoclen + IV + 1, 2405 temp, temp); 2406 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL || 2407 subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA) 2408 temp = CHCR_SCMD_CIPHER_MODE_AES_CTR; 2409 else 2410 temp = CHCR_SCMD_CIPHER_MODE_AES_CBC; 2411 chcr_req->sec_cpl.seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(reqctx->op, 2412 (reqctx->op == CHCR_ENCRYPT_OP) ? 1 : 0, 2413 temp, 2414 actx->auth_mode, aeadctx->hmac_ctrl, 2415 IV >> 1); 2416 chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1, 2417 0, 0, dst_size); 2418 2419 chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr; 2420 if (reqctx->op == CHCR_ENCRYPT_OP || 2421 subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA || 2422 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) 2423 memcpy(chcr_req->key_ctx.key, aeadctx->key, 2424 aeadctx->enckey_len); 2425 else 2426 memcpy(chcr_req->key_ctx.key, actx->dec_rrkey, 2427 aeadctx->enckey_len); 2428 2429 memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16), 2430 actx->h_iopad, kctx_len - roundup(aeadctx->enckey_len, 16)); 2431 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len); 2432 ivptr = (u8 *)(phys_cpl + 1) + dst_size; 2433 ulptx = (struct ulptx_sgl *)(ivptr + IV); 2434 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA || 2435 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) { 2436 memcpy(ivptr, aeadctx->nonce, CTR_RFC3686_NONCE_SIZE); 2437 memcpy(ivptr + CTR_RFC3686_NONCE_SIZE, req->iv, 2438 CTR_RFC3686_IV_SIZE); 2439 *(__be32 *)(ivptr + CTR_RFC3686_NONCE_SIZE + 2440 CTR_RFC3686_IV_SIZE) = cpu_to_be32(1); 2441 } else { 2442 memcpy(ivptr, req->iv, IV); 2443 } 2444 chcr_add_aead_dst_ent(req, phys_cpl, qid); 2445 chcr_add_aead_src_ent(req, ulptx); 2446 atomic_inc(&adap->chcr_stats.cipher_rqst); 2447 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + IV + 2448 kctx_len + (reqctx->imm ? (req->assoclen + req->cryptlen) : 0); 2449 create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, size, 2450 transhdr_len, temp, 0); 2451 reqctx->skb = skb; 2452 2453 return skb; 2454 err: 2455 chcr_aead_common_exit(req); 2456 2457 return ERR_PTR(error); 2458 } 2459 2460 int chcr_aead_dma_map(struct device *dev, 2461 struct aead_request *req, 2462 unsigned short op_type) 2463 { 2464 int error; 2465 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); 2466 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 2467 unsigned int authsize = crypto_aead_authsize(tfm); 2468 int dst_size; 2469 2470 dst_size = req->assoclen + req->cryptlen + (op_type ? 2471 -authsize : authsize); 2472 if (!req->cryptlen || !dst_size) 2473 return 0; 2474 reqctx->iv_dma = dma_map_single(dev, reqctx->iv, (IV + reqctx->b0_len), 2475 DMA_BIDIRECTIONAL); 2476 if (dma_mapping_error(dev, reqctx->iv_dma)) 2477 return -ENOMEM; 2478 if (reqctx->b0_len) 2479 reqctx->b0_dma = reqctx->iv_dma + IV; 2480 else 2481 reqctx->b0_dma = 0; 2482 if (req->src == req->dst) { 2483 error = dma_map_sg(dev, req->src, sg_nents(req->src), 2484 DMA_BIDIRECTIONAL); 2485 if (!error) 2486 goto err; 2487 } else { 2488 error = dma_map_sg(dev, req->src, sg_nents(req->src), 2489 DMA_TO_DEVICE); 2490 if (!error) 2491 goto err; 2492 error = dma_map_sg(dev, req->dst, sg_nents(req->dst), 2493 DMA_FROM_DEVICE); 2494 if (!error) { 2495 dma_unmap_sg(dev, req->src, sg_nents(req->src), 2496 DMA_TO_DEVICE); 2497 goto err; 2498 } 2499 } 2500 2501 return 0; 2502 err: 2503 dma_unmap_single(dev, reqctx->iv_dma, IV, DMA_BIDIRECTIONAL); 2504 return -ENOMEM; 2505 } 2506 2507 void chcr_aead_dma_unmap(struct device *dev, 2508 struct aead_request *req, 2509 unsigned short op_type) 2510 { 2511 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); 2512 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 2513 unsigned int authsize = crypto_aead_authsize(tfm); 2514 int dst_size; 2515 2516 dst_size = req->assoclen + req->cryptlen + (op_type ? 2517 -authsize : authsize); 2518 if (!req->cryptlen || !dst_size) 2519 return; 2520 2521 dma_unmap_single(dev, reqctx->iv_dma, (IV + reqctx->b0_len), 2522 DMA_BIDIRECTIONAL); 2523 if (req->src == req->dst) { 2524 dma_unmap_sg(dev, req->src, sg_nents(req->src), 2525 DMA_BIDIRECTIONAL); 2526 } else { 2527 dma_unmap_sg(dev, req->src, sg_nents(req->src), 2528 DMA_TO_DEVICE); 2529 dma_unmap_sg(dev, req->dst, sg_nents(req->dst), 2530 DMA_FROM_DEVICE); 2531 } 2532 } 2533 2534 void chcr_add_aead_src_ent(struct aead_request *req, 2535 struct ulptx_sgl *ulptx) 2536 { 2537 struct ulptx_walk ulp_walk; 2538 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); 2539 2540 if (reqctx->imm) { 2541 u8 *buf = (u8 *)ulptx; 2542 2543 if (reqctx->b0_len) { 2544 memcpy(buf, reqctx->scratch_pad, reqctx->b0_len); 2545 buf += reqctx->b0_len; 2546 } 2547 sg_pcopy_to_buffer(req->src, sg_nents(req->src), 2548 buf, req->cryptlen + req->assoclen, 0); 2549 } else { 2550 ulptx_walk_init(&ulp_walk, ulptx); 2551 if (reqctx->b0_len) 2552 ulptx_walk_add_page(&ulp_walk, reqctx->b0_len, 2553 reqctx->b0_dma); 2554 ulptx_walk_add_sg(&ulp_walk, req->src, req->cryptlen + 2555 req->assoclen, 0); 2556 ulptx_walk_end(&ulp_walk); 2557 } 2558 } 2559 2560 void chcr_add_aead_dst_ent(struct aead_request *req, 2561 struct cpl_rx_phys_dsgl *phys_cpl, 2562 unsigned short qid) 2563 { 2564 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); 2565 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 2566 struct dsgl_walk dsgl_walk; 2567 unsigned int authsize = crypto_aead_authsize(tfm); 2568 struct chcr_context *ctx = a_ctx(tfm); 2569 u32 temp; 2570 2571 dsgl_walk_init(&dsgl_walk, phys_cpl); 2572 dsgl_walk_add_page(&dsgl_walk, IV + reqctx->b0_len, reqctx->iv_dma); 2573 temp = req->assoclen + req->cryptlen + 2574 (reqctx->op ? -authsize : authsize); 2575 dsgl_walk_add_sg(&dsgl_walk, req->dst, temp, 0); 2576 dsgl_walk_end(&dsgl_walk, qid, ctx->pci_chan_id); 2577 } 2578 2579 void chcr_add_cipher_src_ent(struct ablkcipher_request *req, 2580 void *ulptx, 2581 struct cipher_wr_param *wrparam) 2582 { 2583 struct ulptx_walk ulp_walk; 2584 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req); 2585 u8 *buf = ulptx; 2586 2587 memcpy(buf, reqctx->iv, IV); 2588 buf += IV; 2589 if (reqctx->imm) { 2590 sg_pcopy_to_buffer(req->src, sg_nents(req->src), 2591 buf, wrparam->bytes, reqctx->processed); 2592 } else { 2593 ulptx_walk_init(&ulp_walk, (struct ulptx_sgl *)buf); 2594 ulptx_walk_add_sg(&ulp_walk, reqctx->srcsg, wrparam->bytes, 2595 reqctx->src_ofst); 2596 reqctx->srcsg = ulp_walk.last_sg; 2597 reqctx->src_ofst = ulp_walk.last_sg_len; 2598 ulptx_walk_end(&ulp_walk); 2599 } 2600 } 2601 2602 void chcr_add_cipher_dst_ent(struct ablkcipher_request *req, 2603 struct cpl_rx_phys_dsgl *phys_cpl, 2604 struct cipher_wr_param *wrparam, 2605 unsigned short qid) 2606 { 2607 struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req); 2608 struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(wrparam->req); 2609 struct chcr_context *ctx = c_ctx(tfm); 2610 struct dsgl_walk dsgl_walk; 2611 2612 dsgl_walk_init(&dsgl_walk, phys_cpl); 2613 dsgl_walk_add_sg(&dsgl_walk, reqctx->dstsg, wrparam->bytes, 2614 reqctx->dst_ofst); 2615 reqctx->dstsg = dsgl_walk.last_sg; 2616 reqctx->dst_ofst = dsgl_walk.last_sg_len; 2617 2618 dsgl_walk_end(&dsgl_walk, qid, ctx->pci_chan_id); 2619 } 2620 2621 void chcr_add_hash_src_ent(struct ahash_request *req, 2622 struct ulptx_sgl *ulptx, 2623 struct hash_wr_param *param) 2624 { 2625 struct ulptx_walk ulp_walk; 2626 struct chcr_ahash_req_ctx *reqctx = ahash_request_ctx(req); 2627 2628 if (reqctx->hctx_wr.imm) { 2629 u8 *buf = (u8 *)ulptx; 2630 2631 if (param->bfr_len) { 2632 memcpy(buf, reqctx->reqbfr, param->bfr_len); 2633 buf += param->bfr_len; 2634 } 2635 2636 sg_pcopy_to_buffer(reqctx->hctx_wr.srcsg, 2637 sg_nents(reqctx->hctx_wr.srcsg), buf, 2638 param->sg_len, 0); 2639 } else { 2640 ulptx_walk_init(&ulp_walk, ulptx); 2641 if (param->bfr_len) 2642 ulptx_walk_add_page(&ulp_walk, param->bfr_len, 2643 reqctx->hctx_wr.dma_addr); 2644 ulptx_walk_add_sg(&ulp_walk, reqctx->hctx_wr.srcsg, 2645 param->sg_len, reqctx->hctx_wr.src_ofst); 2646 reqctx->hctx_wr.srcsg = ulp_walk.last_sg; 2647 reqctx->hctx_wr.src_ofst = ulp_walk.last_sg_len; 2648 ulptx_walk_end(&ulp_walk); 2649 } 2650 } 2651 2652 int chcr_hash_dma_map(struct device *dev, 2653 struct ahash_request *req) 2654 { 2655 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req); 2656 int error = 0; 2657 2658 if (!req->nbytes) 2659 return 0; 2660 error = dma_map_sg(dev, req->src, sg_nents(req->src), 2661 DMA_TO_DEVICE); 2662 if (!error) 2663 return -ENOMEM; 2664 req_ctx->hctx_wr.is_sg_map = 1; 2665 return 0; 2666 } 2667 2668 void chcr_hash_dma_unmap(struct device *dev, 2669 struct ahash_request *req) 2670 { 2671 struct chcr_ahash_req_ctx *req_ctx = ahash_request_ctx(req); 2672 2673 if (!req->nbytes) 2674 return; 2675 2676 dma_unmap_sg(dev, req->src, sg_nents(req->src), 2677 DMA_TO_DEVICE); 2678 req_ctx->hctx_wr.is_sg_map = 0; 2679 2680 } 2681 2682 int chcr_cipher_dma_map(struct device *dev, 2683 struct ablkcipher_request *req) 2684 { 2685 int error; 2686 2687 if (req->src == req->dst) { 2688 error = dma_map_sg(dev, req->src, sg_nents(req->src), 2689 DMA_BIDIRECTIONAL); 2690 if (!error) 2691 goto err; 2692 } else { 2693 error = dma_map_sg(dev, req->src, sg_nents(req->src), 2694 DMA_TO_DEVICE); 2695 if (!error) 2696 goto err; 2697 error = dma_map_sg(dev, req->dst, sg_nents(req->dst), 2698 DMA_FROM_DEVICE); 2699 if (!error) { 2700 dma_unmap_sg(dev, req->src, sg_nents(req->src), 2701 DMA_TO_DEVICE); 2702 goto err; 2703 } 2704 } 2705 2706 return 0; 2707 err: 2708 return -ENOMEM; 2709 } 2710 2711 void chcr_cipher_dma_unmap(struct device *dev, 2712 struct ablkcipher_request *req) 2713 { 2714 if (req->src == req->dst) { 2715 dma_unmap_sg(dev, req->src, sg_nents(req->src), 2716 DMA_BIDIRECTIONAL); 2717 } else { 2718 dma_unmap_sg(dev, req->src, sg_nents(req->src), 2719 DMA_TO_DEVICE); 2720 dma_unmap_sg(dev, req->dst, sg_nents(req->dst), 2721 DMA_FROM_DEVICE); 2722 } 2723 } 2724 2725 static int set_msg_len(u8 *block, unsigned int msglen, int csize) 2726 { 2727 __be32 data; 2728 2729 memset(block, 0, csize); 2730 block += csize; 2731 2732 if (csize >= 4) 2733 csize = 4; 2734 else if (msglen > (unsigned int)(1 << (8 * csize))) 2735 return -EOVERFLOW; 2736 2737 data = cpu_to_be32(msglen); 2738 memcpy(block - csize, (u8 *)&data + 4 - csize, csize); 2739 2740 return 0; 2741 } 2742 2743 static int generate_b0(struct aead_request *req, u8 *ivptr, 2744 unsigned short op_type) 2745 { 2746 unsigned int l, lp, m; 2747 int rc; 2748 struct crypto_aead *aead = crypto_aead_reqtfm(req); 2749 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); 2750 u8 *b0 = reqctx->scratch_pad; 2751 2752 m = crypto_aead_authsize(aead); 2753 2754 memcpy(b0, ivptr, 16); 2755 2756 lp = b0[0]; 2757 l = lp + 1; 2758 2759 /* set m, bits 3-5 */ 2760 *b0 |= (8 * ((m - 2) / 2)); 2761 2762 /* set adata, bit 6, if associated data is used */ 2763 if (req->assoclen) 2764 *b0 |= 64; 2765 rc = set_msg_len(b0 + 16 - l, 2766 (op_type == CHCR_DECRYPT_OP) ? 2767 req->cryptlen - m : req->cryptlen, l); 2768 2769 return rc; 2770 } 2771 2772 static inline int crypto_ccm_check_iv(const u8 *iv) 2773 { 2774 /* 2 <= L <= 8, so 1 <= L' <= 7. */ 2775 if (iv[0] < 1 || iv[0] > 7) 2776 return -EINVAL; 2777 2778 return 0; 2779 } 2780 2781 static int ccm_format_packet(struct aead_request *req, 2782 u8 *ivptr, 2783 unsigned int sub_type, 2784 unsigned short op_type, 2785 unsigned int assoclen) 2786 { 2787 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); 2788 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 2789 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 2790 int rc = 0; 2791 2792 if (sub_type == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) { 2793 ivptr[0] = 3; 2794 memcpy(ivptr + 1, &aeadctx->salt[0], 3); 2795 memcpy(ivptr + 4, req->iv, 8); 2796 memset(ivptr + 12, 0, 4); 2797 } else { 2798 memcpy(ivptr, req->iv, 16); 2799 } 2800 if (assoclen) 2801 *((unsigned short *)(reqctx->scratch_pad + 16)) = 2802 htons(assoclen); 2803 2804 rc = generate_b0(req, ivptr, op_type); 2805 /* zero the ctr value */ 2806 memset(ivptr + 15 - ivptr[0], 0, ivptr[0] + 1); 2807 return rc; 2808 } 2809 2810 static void fill_sec_cpl_for_aead(struct cpl_tx_sec_pdu *sec_cpl, 2811 unsigned int dst_size, 2812 struct aead_request *req, 2813 unsigned short op_type) 2814 { 2815 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 2816 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 2817 unsigned int cipher_mode = CHCR_SCMD_CIPHER_MODE_AES_CCM; 2818 unsigned int mac_mode = CHCR_SCMD_AUTH_MODE_CBCMAC; 2819 unsigned int c_id = a_ctx(tfm)->tx_chan_id; 2820 unsigned int ccm_xtra; 2821 unsigned char tag_offset = 0, auth_offset = 0; 2822 unsigned int assoclen; 2823 2824 if (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) 2825 assoclen = req->assoclen - 8; 2826 else 2827 assoclen = req->assoclen; 2828 ccm_xtra = CCM_B0_SIZE + 2829 ((assoclen) ? CCM_AAD_FIELD_SIZE : 0); 2830 2831 auth_offset = req->cryptlen ? 2832 (req->assoclen + IV + 1 + ccm_xtra) : 0; 2833 if (op_type == CHCR_DECRYPT_OP) { 2834 if (crypto_aead_authsize(tfm) != req->cryptlen) 2835 tag_offset = crypto_aead_authsize(tfm); 2836 else 2837 auth_offset = 0; 2838 } 2839 2840 2841 sec_cpl->op_ivinsrtofst = FILL_SEC_CPL_OP_IVINSR(c_id, 2842 2, 1); 2843 sec_cpl->pldlen = 2844 htonl(req->assoclen + IV + req->cryptlen + ccm_xtra); 2845 /* For CCM there wil be b0 always. So AAD start will be 1 always */ 2846 sec_cpl->aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI( 2847 1 + IV, IV + assoclen + ccm_xtra, 2848 req->assoclen + IV + 1 + ccm_xtra, 0); 2849 2850 sec_cpl->cipherstop_lo_authinsert = FILL_SEC_CPL_AUTHINSERT(0, 2851 auth_offset, tag_offset, 2852 (op_type == CHCR_ENCRYPT_OP) ? 0 : 2853 crypto_aead_authsize(tfm)); 2854 sec_cpl->seqno_numivs = FILL_SEC_CPL_SCMD0_SEQNO(op_type, 2855 (op_type == CHCR_ENCRYPT_OP) ? 0 : 1, 2856 cipher_mode, mac_mode, 2857 aeadctx->hmac_ctrl, IV >> 1); 2858 2859 sec_cpl->ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1, 0, 2860 0, dst_size); 2861 } 2862 2863 static int aead_ccm_validate_input(unsigned short op_type, 2864 struct aead_request *req, 2865 struct chcr_aead_ctx *aeadctx, 2866 unsigned int sub_type) 2867 { 2868 if (sub_type != CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) { 2869 if (crypto_ccm_check_iv(req->iv)) { 2870 pr_err("CCM: IV check fails\n"); 2871 return -EINVAL; 2872 } 2873 } else { 2874 if (req->assoclen != 16 && req->assoclen != 20) { 2875 pr_err("RFC4309: Invalid AAD length %d\n", 2876 req->assoclen); 2877 return -EINVAL; 2878 } 2879 } 2880 return 0; 2881 } 2882 2883 static struct sk_buff *create_aead_ccm_wr(struct aead_request *req, 2884 unsigned short qid, 2885 int size) 2886 { 2887 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 2888 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 2889 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); 2890 struct sk_buff *skb = NULL; 2891 struct chcr_wr *chcr_req; 2892 struct cpl_rx_phys_dsgl *phys_cpl; 2893 struct ulptx_sgl *ulptx; 2894 unsigned int transhdr_len; 2895 unsigned int dst_size = 0, kctx_len, dnents, temp, snents; 2896 unsigned int sub_type, assoclen = req->assoclen; 2897 unsigned int authsize = crypto_aead_authsize(tfm); 2898 int error = -EINVAL; 2899 u8 *ivptr; 2900 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL : 2901 GFP_ATOMIC; 2902 struct adapter *adap = padap(a_ctx(tfm)->dev); 2903 2904 sub_type = get_aead_subtype(tfm); 2905 if (sub_type == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309) 2906 assoclen -= 8; 2907 reqctx->b0_len = CCM_B0_SIZE + (assoclen ? CCM_AAD_FIELD_SIZE : 0); 2908 error = chcr_aead_common_init(req); 2909 if (error) 2910 return ERR_PTR(error); 2911 2912 error = aead_ccm_validate_input(reqctx->op, req, aeadctx, sub_type); 2913 if (error) 2914 goto err; 2915 dnents = sg_nents_xlen(req->dst, req->assoclen + req->cryptlen 2916 + (reqctx->op ? -authsize : authsize), 2917 CHCR_DST_SG_SIZE, 0); 2918 dnents += MIN_CCM_SG; // For IV and B0 2919 dst_size = get_space_for_phys_dsgl(dnents); 2920 snents = sg_nents_xlen(req->src, req->assoclen + req->cryptlen, 2921 CHCR_SRC_SG_SIZE, 0); 2922 snents += MIN_CCM_SG; //For B0 2923 kctx_len = roundup(aeadctx->enckey_len, 16) * 2; 2924 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size); 2925 reqctx->imm = (transhdr_len + req->assoclen + req->cryptlen + 2926 reqctx->b0_len) <= SGE_MAX_WR_LEN; 2927 temp = reqctx->imm ? roundup(req->assoclen + req->cryptlen + 2928 reqctx->b0_len, 16) : 2929 (sgl_len(snents) * 8); 2930 transhdr_len += temp; 2931 transhdr_len = roundup(transhdr_len, 16); 2932 2933 if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE - 2934 reqctx->b0_len, transhdr_len, reqctx->op)) { 2935 atomic_inc(&adap->chcr_stats.fallback); 2936 chcr_aead_common_exit(req); 2937 return ERR_PTR(chcr_aead_fallback(req, reqctx->op)); 2938 } 2939 skb = alloc_skb(transhdr_len, flags); 2940 2941 if (!skb) { 2942 error = -ENOMEM; 2943 goto err; 2944 } 2945 2946 chcr_req = __skb_put_zero(skb, transhdr_len); 2947 2948 fill_sec_cpl_for_aead(&chcr_req->sec_cpl, dst_size, req, reqctx->op); 2949 2950 chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr; 2951 memcpy(chcr_req->key_ctx.key, aeadctx->key, aeadctx->enckey_len); 2952 memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16), 2953 aeadctx->key, aeadctx->enckey_len); 2954 2955 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len); 2956 ivptr = (u8 *)(phys_cpl + 1) + dst_size; 2957 ulptx = (struct ulptx_sgl *)(ivptr + IV); 2958 error = ccm_format_packet(req, ivptr, sub_type, reqctx->op, assoclen); 2959 if (error) 2960 goto dstmap_fail; 2961 chcr_add_aead_dst_ent(req, phys_cpl, qid); 2962 chcr_add_aead_src_ent(req, ulptx); 2963 2964 atomic_inc(&adap->chcr_stats.aead_rqst); 2965 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + IV + 2966 kctx_len + (reqctx->imm ? (req->assoclen + req->cryptlen + 2967 reqctx->b0_len) : 0); 2968 create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, 0, 2969 transhdr_len, temp, 0); 2970 reqctx->skb = skb; 2971 2972 return skb; 2973 dstmap_fail: 2974 kfree_skb(skb); 2975 err: 2976 chcr_aead_common_exit(req); 2977 return ERR_PTR(error); 2978 } 2979 2980 static struct sk_buff *create_gcm_wr(struct aead_request *req, 2981 unsigned short qid, 2982 int size) 2983 { 2984 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 2985 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 2986 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); 2987 struct sk_buff *skb = NULL; 2988 struct chcr_wr *chcr_req; 2989 struct cpl_rx_phys_dsgl *phys_cpl; 2990 struct ulptx_sgl *ulptx; 2991 unsigned int transhdr_len, dnents = 0, snents; 2992 unsigned int dst_size = 0, temp = 0, kctx_len, assoclen = req->assoclen; 2993 unsigned int authsize = crypto_aead_authsize(tfm); 2994 int error = -EINVAL; 2995 u8 *ivptr; 2996 gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL : 2997 GFP_ATOMIC; 2998 struct adapter *adap = padap(a_ctx(tfm)->dev); 2999 3000 if (get_aead_subtype(tfm) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106) 3001 assoclen = req->assoclen - 8; 3002 3003 reqctx->b0_len = 0; 3004 error = chcr_aead_common_init(req); 3005 if (error) 3006 return ERR_PTR(error); 3007 dnents = sg_nents_xlen(req->dst, req->assoclen + req->cryptlen + 3008 (reqctx->op ? -authsize : authsize), 3009 CHCR_DST_SG_SIZE, 0); 3010 snents = sg_nents_xlen(req->src, req->assoclen + req->cryptlen, 3011 CHCR_SRC_SG_SIZE, 0); 3012 dnents += MIN_GCM_SG; // For IV 3013 dst_size = get_space_for_phys_dsgl(dnents); 3014 kctx_len = roundup(aeadctx->enckey_len, 16) + AEAD_H_SIZE; 3015 transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size); 3016 reqctx->imm = (transhdr_len + req->assoclen + req->cryptlen) <= 3017 SGE_MAX_WR_LEN; 3018 temp = reqctx->imm ? roundup(req->assoclen + req->cryptlen, 16) : 3019 (sgl_len(snents) * 8); 3020 transhdr_len += temp; 3021 transhdr_len = roundup(transhdr_len, 16); 3022 if (chcr_aead_need_fallback(req, dnents, T6_MAX_AAD_SIZE, 3023 transhdr_len, reqctx->op)) { 3024 3025 atomic_inc(&adap->chcr_stats.fallback); 3026 chcr_aead_common_exit(req); 3027 return ERR_PTR(chcr_aead_fallback(req, reqctx->op)); 3028 } 3029 skb = alloc_skb(transhdr_len, flags); 3030 if (!skb) { 3031 error = -ENOMEM; 3032 goto err; 3033 } 3034 3035 chcr_req = __skb_put_zero(skb, transhdr_len); 3036 3037 //Offset of tag from end 3038 temp = (reqctx->op == CHCR_ENCRYPT_OP) ? 0 : authsize; 3039 chcr_req->sec_cpl.op_ivinsrtofst = FILL_SEC_CPL_OP_IVINSR( 3040 a_ctx(tfm)->tx_chan_id, 2, 1); 3041 chcr_req->sec_cpl.pldlen = 3042 htonl(req->assoclen + IV + req->cryptlen); 3043 chcr_req->sec_cpl.aadstart_cipherstop_hi = FILL_SEC_CPL_CIPHERSTOP_HI( 3044 assoclen ? 1 + IV : 0, 3045 assoclen ? IV + assoclen : 0, 3046 req->assoclen + IV + 1, 0); 3047 chcr_req->sec_cpl.cipherstop_lo_authinsert = 3048 FILL_SEC_CPL_AUTHINSERT(0, req->assoclen + IV + 1, 3049 temp, temp); 3050 chcr_req->sec_cpl.seqno_numivs = 3051 FILL_SEC_CPL_SCMD0_SEQNO(reqctx->op, (reqctx->op == 3052 CHCR_ENCRYPT_OP) ? 1 : 0, 3053 CHCR_SCMD_CIPHER_MODE_AES_GCM, 3054 CHCR_SCMD_AUTH_MODE_GHASH, 3055 aeadctx->hmac_ctrl, IV >> 1); 3056 chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 1, 3057 0, 0, dst_size); 3058 chcr_req->key_ctx.ctx_hdr = aeadctx->key_ctx_hdr; 3059 memcpy(chcr_req->key_ctx.key, aeadctx->key, aeadctx->enckey_len); 3060 memcpy(chcr_req->key_ctx.key + roundup(aeadctx->enckey_len, 16), 3061 GCM_CTX(aeadctx)->ghash_h, AEAD_H_SIZE); 3062 3063 phys_cpl = (struct cpl_rx_phys_dsgl *)((u8 *)(chcr_req + 1) + kctx_len); 3064 ivptr = (u8 *)(phys_cpl + 1) + dst_size; 3065 /* prepare a 16 byte iv */ 3066 /* S A L T | IV | 0x00000001 */ 3067 if (get_aead_subtype(tfm) == 3068 CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106) { 3069 memcpy(ivptr, aeadctx->salt, 4); 3070 memcpy(ivptr + 4, req->iv, GCM_RFC4106_IV_SIZE); 3071 } else { 3072 memcpy(ivptr, req->iv, GCM_AES_IV_SIZE); 3073 } 3074 *((unsigned int *)(ivptr + 12)) = htonl(0x01); 3075 3076 ulptx = (struct ulptx_sgl *)(ivptr + 16); 3077 3078 chcr_add_aead_dst_ent(req, phys_cpl, qid); 3079 chcr_add_aead_src_ent(req, ulptx); 3080 atomic_inc(&adap->chcr_stats.aead_rqst); 3081 temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + IV + 3082 kctx_len + (reqctx->imm ? (req->assoclen + req->cryptlen) : 0); 3083 create_wreq(a_ctx(tfm), chcr_req, &req->base, reqctx->imm, size, 3084 transhdr_len, temp, reqctx->verify); 3085 reqctx->skb = skb; 3086 return skb; 3087 3088 err: 3089 chcr_aead_common_exit(req); 3090 return ERR_PTR(error); 3091 } 3092 3093 3094 3095 static int chcr_aead_cra_init(struct crypto_aead *tfm) 3096 { 3097 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 3098 struct aead_alg *alg = crypto_aead_alg(tfm); 3099 3100 aeadctx->sw_cipher = crypto_alloc_aead(alg->base.cra_name, 0, 3101 CRYPTO_ALG_NEED_FALLBACK | 3102 CRYPTO_ALG_ASYNC); 3103 if (IS_ERR(aeadctx->sw_cipher)) 3104 return PTR_ERR(aeadctx->sw_cipher); 3105 crypto_aead_set_reqsize(tfm, max(sizeof(struct chcr_aead_reqctx), 3106 sizeof(struct aead_request) + 3107 crypto_aead_reqsize(aeadctx->sw_cipher))); 3108 return chcr_device_init(a_ctx(tfm)); 3109 } 3110 3111 static void chcr_aead_cra_exit(struct crypto_aead *tfm) 3112 { 3113 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 3114 3115 crypto_free_aead(aeadctx->sw_cipher); 3116 } 3117 3118 static int chcr_authenc_null_setauthsize(struct crypto_aead *tfm, 3119 unsigned int authsize) 3120 { 3121 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 3122 3123 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NOP; 3124 aeadctx->mayverify = VERIFY_HW; 3125 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize); 3126 } 3127 static int chcr_authenc_setauthsize(struct crypto_aead *tfm, 3128 unsigned int authsize) 3129 { 3130 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 3131 u32 maxauth = crypto_aead_maxauthsize(tfm); 3132 3133 /*SHA1 authsize in ipsec is 12 instead of 10 i.e maxauthsize / 2 is not 3134 * true for sha1. authsize == 12 condition should be before 3135 * authsize == (maxauth >> 1) 3136 */ 3137 if (authsize == ICV_4) { 3138 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1; 3139 aeadctx->mayverify = VERIFY_HW; 3140 } else if (authsize == ICV_6) { 3141 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL2; 3142 aeadctx->mayverify = VERIFY_HW; 3143 } else if (authsize == ICV_10) { 3144 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_TRUNC_RFC4366; 3145 aeadctx->mayverify = VERIFY_HW; 3146 } else if (authsize == ICV_12) { 3147 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT; 3148 aeadctx->mayverify = VERIFY_HW; 3149 } else if (authsize == ICV_14) { 3150 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3; 3151 aeadctx->mayverify = VERIFY_HW; 3152 } else if (authsize == (maxauth >> 1)) { 3153 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2; 3154 aeadctx->mayverify = VERIFY_HW; 3155 } else if (authsize == maxauth) { 3156 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC; 3157 aeadctx->mayverify = VERIFY_HW; 3158 } else { 3159 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC; 3160 aeadctx->mayverify = VERIFY_SW; 3161 } 3162 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize); 3163 } 3164 3165 3166 static int chcr_gcm_setauthsize(struct crypto_aead *tfm, unsigned int authsize) 3167 { 3168 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 3169 3170 switch (authsize) { 3171 case ICV_4: 3172 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1; 3173 aeadctx->mayverify = VERIFY_HW; 3174 break; 3175 case ICV_8: 3176 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2; 3177 aeadctx->mayverify = VERIFY_HW; 3178 break; 3179 case ICV_12: 3180 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT; 3181 aeadctx->mayverify = VERIFY_HW; 3182 break; 3183 case ICV_14: 3184 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3; 3185 aeadctx->mayverify = VERIFY_HW; 3186 break; 3187 case ICV_16: 3188 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC; 3189 aeadctx->mayverify = VERIFY_HW; 3190 break; 3191 case ICV_13: 3192 case ICV_15: 3193 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC; 3194 aeadctx->mayverify = VERIFY_SW; 3195 break; 3196 default: 3197 3198 crypto_tfm_set_flags((struct crypto_tfm *) tfm, 3199 CRYPTO_TFM_RES_BAD_KEY_LEN); 3200 return -EINVAL; 3201 } 3202 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize); 3203 } 3204 3205 static int chcr_4106_4309_setauthsize(struct crypto_aead *tfm, 3206 unsigned int authsize) 3207 { 3208 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 3209 3210 switch (authsize) { 3211 case ICV_8: 3212 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2; 3213 aeadctx->mayverify = VERIFY_HW; 3214 break; 3215 case ICV_12: 3216 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT; 3217 aeadctx->mayverify = VERIFY_HW; 3218 break; 3219 case ICV_16: 3220 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC; 3221 aeadctx->mayverify = VERIFY_HW; 3222 break; 3223 default: 3224 crypto_tfm_set_flags((struct crypto_tfm *)tfm, 3225 CRYPTO_TFM_RES_BAD_KEY_LEN); 3226 return -EINVAL; 3227 } 3228 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize); 3229 } 3230 3231 static int chcr_ccm_setauthsize(struct crypto_aead *tfm, 3232 unsigned int authsize) 3233 { 3234 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 3235 3236 switch (authsize) { 3237 case ICV_4: 3238 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL1; 3239 aeadctx->mayverify = VERIFY_HW; 3240 break; 3241 case ICV_6: 3242 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL2; 3243 aeadctx->mayverify = VERIFY_HW; 3244 break; 3245 case ICV_8: 3246 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_DIV2; 3247 aeadctx->mayverify = VERIFY_HW; 3248 break; 3249 case ICV_10: 3250 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_TRUNC_RFC4366; 3251 aeadctx->mayverify = VERIFY_HW; 3252 break; 3253 case ICV_12: 3254 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT; 3255 aeadctx->mayverify = VERIFY_HW; 3256 break; 3257 case ICV_14: 3258 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_PL3; 3259 aeadctx->mayverify = VERIFY_HW; 3260 break; 3261 case ICV_16: 3262 aeadctx->hmac_ctrl = CHCR_SCMD_HMAC_CTRL_NO_TRUNC; 3263 aeadctx->mayverify = VERIFY_HW; 3264 break; 3265 default: 3266 crypto_tfm_set_flags((struct crypto_tfm *)tfm, 3267 CRYPTO_TFM_RES_BAD_KEY_LEN); 3268 return -EINVAL; 3269 } 3270 return crypto_aead_setauthsize(aeadctx->sw_cipher, authsize); 3271 } 3272 3273 static int chcr_ccm_common_setkey(struct crypto_aead *aead, 3274 const u8 *key, 3275 unsigned int keylen) 3276 { 3277 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead)); 3278 unsigned char ck_size, mk_size; 3279 int key_ctx_size = 0; 3280 3281 key_ctx_size = sizeof(struct _key_ctx) + roundup(keylen, 16) * 2; 3282 if (keylen == AES_KEYSIZE_128) { 3283 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128; 3284 mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_128; 3285 } else if (keylen == AES_KEYSIZE_192) { 3286 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192; 3287 mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_192; 3288 } else if (keylen == AES_KEYSIZE_256) { 3289 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256; 3290 mk_size = CHCR_KEYCTX_MAC_KEY_SIZE_256; 3291 } else { 3292 crypto_tfm_set_flags((struct crypto_tfm *)aead, 3293 CRYPTO_TFM_RES_BAD_KEY_LEN); 3294 aeadctx->enckey_len = 0; 3295 return -EINVAL; 3296 } 3297 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, mk_size, 0, 0, 3298 key_ctx_size >> 4); 3299 memcpy(aeadctx->key, key, keylen); 3300 aeadctx->enckey_len = keylen; 3301 3302 return 0; 3303 } 3304 3305 static int chcr_aead_ccm_setkey(struct crypto_aead *aead, 3306 const u8 *key, 3307 unsigned int keylen) 3308 { 3309 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead)); 3310 int error; 3311 3312 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK); 3313 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead) & 3314 CRYPTO_TFM_REQ_MASK); 3315 error = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen); 3316 crypto_aead_clear_flags(aead, CRYPTO_TFM_RES_MASK); 3317 crypto_aead_set_flags(aead, crypto_aead_get_flags(aeadctx->sw_cipher) & 3318 CRYPTO_TFM_RES_MASK); 3319 if (error) 3320 return error; 3321 return chcr_ccm_common_setkey(aead, key, keylen); 3322 } 3323 3324 static int chcr_aead_rfc4309_setkey(struct crypto_aead *aead, const u8 *key, 3325 unsigned int keylen) 3326 { 3327 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead)); 3328 int error; 3329 3330 if (keylen < 3) { 3331 crypto_tfm_set_flags((struct crypto_tfm *)aead, 3332 CRYPTO_TFM_RES_BAD_KEY_LEN); 3333 aeadctx->enckey_len = 0; 3334 return -EINVAL; 3335 } 3336 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK); 3337 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead) & 3338 CRYPTO_TFM_REQ_MASK); 3339 error = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen); 3340 crypto_aead_clear_flags(aead, CRYPTO_TFM_RES_MASK); 3341 crypto_aead_set_flags(aead, crypto_aead_get_flags(aeadctx->sw_cipher) & 3342 CRYPTO_TFM_RES_MASK); 3343 if (error) 3344 return error; 3345 keylen -= 3; 3346 memcpy(aeadctx->salt, key + keylen, 3); 3347 return chcr_ccm_common_setkey(aead, key, keylen); 3348 } 3349 3350 static int chcr_gcm_setkey(struct crypto_aead *aead, const u8 *key, 3351 unsigned int keylen) 3352 { 3353 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(aead)); 3354 struct chcr_gcm_ctx *gctx = GCM_CTX(aeadctx); 3355 unsigned int ck_size; 3356 int ret = 0, key_ctx_size = 0; 3357 struct crypto_aes_ctx aes; 3358 3359 aeadctx->enckey_len = 0; 3360 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK); 3361 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(aead) 3362 & CRYPTO_TFM_REQ_MASK); 3363 ret = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen); 3364 crypto_aead_clear_flags(aead, CRYPTO_TFM_RES_MASK); 3365 crypto_aead_set_flags(aead, crypto_aead_get_flags(aeadctx->sw_cipher) & 3366 CRYPTO_TFM_RES_MASK); 3367 if (ret) 3368 goto out; 3369 3370 if (get_aead_subtype(aead) == CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106 && 3371 keylen > 3) { 3372 keylen -= 4; /* nonce/salt is present in the last 4 bytes */ 3373 memcpy(aeadctx->salt, key + keylen, 4); 3374 } 3375 if (keylen == AES_KEYSIZE_128) { 3376 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128; 3377 } else if (keylen == AES_KEYSIZE_192) { 3378 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192; 3379 } else if (keylen == AES_KEYSIZE_256) { 3380 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256; 3381 } else { 3382 crypto_tfm_set_flags((struct crypto_tfm *)aead, 3383 CRYPTO_TFM_RES_BAD_KEY_LEN); 3384 pr_err("GCM: Invalid key length %d\n", keylen); 3385 ret = -EINVAL; 3386 goto out; 3387 } 3388 3389 memcpy(aeadctx->key, key, keylen); 3390 aeadctx->enckey_len = keylen; 3391 key_ctx_size = sizeof(struct _key_ctx) + roundup(keylen, 16) + 3392 AEAD_H_SIZE; 3393 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, 3394 CHCR_KEYCTX_MAC_KEY_SIZE_128, 3395 0, 0, 3396 key_ctx_size >> 4); 3397 /* Calculate the H = CIPH(K, 0 repeated 16 times). 3398 * It will go in key context 3399 */ 3400 ret = aes_expandkey(&aes, key, keylen); 3401 if (ret) { 3402 aeadctx->enckey_len = 0; 3403 goto out; 3404 } 3405 memset(gctx->ghash_h, 0, AEAD_H_SIZE); 3406 aes_encrypt(&aes, gctx->ghash_h, gctx->ghash_h); 3407 memzero_explicit(&aes, sizeof(aes)); 3408 3409 out: 3410 return ret; 3411 } 3412 3413 static int chcr_authenc_setkey(struct crypto_aead *authenc, const u8 *key, 3414 unsigned int keylen) 3415 { 3416 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(authenc)); 3417 struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx); 3418 /* it contains auth and cipher key both*/ 3419 struct crypto_authenc_keys keys; 3420 unsigned int bs, subtype; 3421 unsigned int max_authsize = crypto_aead_alg(authenc)->maxauthsize; 3422 int err = 0, i, key_ctx_len = 0; 3423 unsigned char ck_size = 0; 3424 unsigned char pad[CHCR_HASH_MAX_BLOCK_SIZE_128] = { 0 }; 3425 struct crypto_shash *base_hash = ERR_PTR(-EINVAL); 3426 struct algo_param param; 3427 int align; 3428 u8 *o_ptr = NULL; 3429 3430 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK); 3431 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(authenc) 3432 & CRYPTO_TFM_REQ_MASK); 3433 err = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen); 3434 crypto_aead_clear_flags(authenc, CRYPTO_TFM_RES_MASK); 3435 crypto_aead_set_flags(authenc, crypto_aead_get_flags(aeadctx->sw_cipher) 3436 & CRYPTO_TFM_RES_MASK); 3437 if (err) 3438 goto out; 3439 3440 if (crypto_authenc_extractkeys(&keys, key, keylen) != 0) { 3441 crypto_aead_set_flags(authenc, CRYPTO_TFM_RES_BAD_KEY_LEN); 3442 goto out; 3443 } 3444 3445 if (get_alg_config(¶m, max_authsize)) { 3446 pr_err("chcr : Unsupported digest size\n"); 3447 goto out; 3448 } 3449 subtype = get_aead_subtype(authenc); 3450 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA || 3451 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) { 3452 if (keys.enckeylen < CTR_RFC3686_NONCE_SIZE) 3453 goto out; 3454 memcpy(aeadctx->nonce, keys.enckey + (keys.enckeylen 3455 - CTR_RFC3686_NONCE_SIZE), CTR_RFC3686_NONCE_SIZE); 3456 keys.enckeylen -= CTR_RFC3686_NONCE_SIZE; 3457 } 3458 if (keys.enckeylen == AES_KEYSIZE_128) { 3459 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128; 3460 } else if (keys.enckeylen == AES_KEYSIZE_192) { 3461 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192; 3462 } else if (keys.enckeylen == AES_KEYSIZE_256) { 3463 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256; 3464 } else { 3465 pr_err("chcr : Unsupported cipher key\n"); 3466 goto out; 3467 } 3468 3469 /* Copy only encryption key. We use authkey to generate h(ipad) and 3470 * h(opad) so authkey is not needed again. authkeylen size have the 3471 * size of the hash digest size. 3472 */ 3473 memcpy(aeadctx->key, keys.enckey, keys.enckeylen); 3474 aeadctx->enckey_len = keys.enckeylen; 3475 if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_SHA || 3476 subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL) { 3477 3478 get_aes_decrypt_key(actx->dec_rrkey, aeadctx->key, 3479 aeadctx->enckey_len << 3); 3480 } 3481 base_hash = chcr_alloc_shash(max_authsize); 3482 if (IS_ERR(base_hash)) { 3483 pr_err("chcr : Base driver cannot be loaded\n"); 3484 aeadctx->enckey_len = 0; 3485 memzero_explicit(&keys, sizeof(keys)); 3486 return -EINVAL; 3487 } 3488 { 3489 SHASH_DESC_ON_STACK(shash, base_hash); 3490 3491 shash->tfm = base_hash; 3492 bs = crypto_shash_blocksize(base_hash); 3493 align = KEYCTX_ALIGN_PAD(max_authsize); 3494 o_ptr = actx->h_iopad + param.result_size + align; 3495 3496 if (keys.authkeylen > bs) { 3497 err = crypto_shash_digest(shash, keys.authkey, 3498 keys.authkeylen, 3499 o_ptr); 3500 if (err) { 3501 pr_err("chcr : Base driver cannot be loaded\n"); 3502 goto out; 3503 } 3504 keys.authkeylen = max_authsize; 3505 } else 3506 memcpy(o_ptr, keys.authkey, keys.authkeylen); 3507 3508 /* Compute the ipad-digest*/ 3509 memset(pad + keys.authkeylen, 0, bs - keys.authkeylen); 3510 memcpy(pad, o_ptr, keys.authkeylen); 3511 for (i = 0; i < bs >> 2; i++) 3512 *((unsigned int *)pad + i) ^= IPAD_DATA; 3513 3514 if (chcr_compute_partial_hash(shash, pad, actx->h_iopad, 3515 max_authsize)) 3516 goto out; 3517 /* Compute the opad-digest */ 3518 memset(pad + keys.authkeylen, 0, bs - keys.authkeylen); 3519 memcpy(pad, o_ptr, keys.authkeylen); 3520 for (i = 0; i < bs >> 2; i++) 3521 *((unsigned int *)pad + i) ^= OPAD_DATA; 3522 3523 if (chcr_compute_partial_hash(shash, pad, o_ptr, max_authsize)) 3524 goto out; 3525 3526 /* convert the ipad and opad digest to network order */ 3527 chcr_change_order(actx->h_iopad, param.result_size); 3528 chcr_change_order(o_ptr, param.result_size); 3529 key_ctx_len = sizeof(struct _key_ctx) + 3530 roundup(keys.enckeylen, 16) + 3531 (param.result_size + align) * 2; 3532 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, param.mk_size, 3533 0, 1, key_ctx_len >> 4); 3534 actx->auth_mode = param.auth_mode; 3535 chcr_free_shash(base_hash); 3536 3537 memzero_explicit(&keys, sizeof(keys)); 3538 return 0; 3539 } 3540 out: 3541 aeadctx->enckey_len = 0; 3542 memzero_explicit(&keys, sizeof(keys)); 3543 if (!IS_ERR(base_hash)) 3544 chcr_free_shash(base_hash); 3545 return -EINVAL; 3546 } 3547 3548 static int chcr_aead_digest_null_setkey(struct crypto_aead *authenc, 3549 const u8 *key, unsigned int keylen) 3550 { 3551 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(authenc)); 3552 struct chcr_authenc_ctx *actx = AUTHENC_CTX(aeadctx); 3553 struct crypto_authenc_keys keys; 3554 int err; 3555 /* it contains auth and cipher key both*/ 3556 unsigned int subtype; 3557 int key_ctx_len = 0; 3558 unsigned char ck_size = 0; 3559 3560 crypto_aead_clear_flags(aeadctx->sw_cipher, CRYPTO_TFM_REQ_MASK); 3561 crypto_aead_set_flags(aeadctx->sw_cipher, crypto_aead_get_flags(authenc) 3562 & CRYPTO_TFM_REQ_MASK); 3563 err = crypto_aead_setkey(aeadctx->sw_cipher, key, keylen); 3564 crypto_aead_clear_flags(authenc, CRYPTO_TFM_RES_MASK); 3565 crypto_aead_set_flags(authenc, crypto_aead_get_flags(aeadctx->sw_cipher) 3566 & CRYPTO_TFM_RES_MASK); 3567 if (err) 3568 goto out; 3569 3570 if (crypto_authenc_extractkeys(&keys, key, keylen) != 0) { 3571 crypto_aead_set_flags(authenc, CRYPTO_TFM_RES_BAD_KEY_LEN); 3572 goto out; 3573 } 3574 subtype = get_aead_subtype(authenc); 3575 if (subtype == CRYPTO_ALG_SUB_TYPE_CTR_SHA || 3576 subtype == CRYPTO_ALG_SUB_TYPE_CTR_NULL) { 3577 if (keys.enckeylen < CTR_RFC3686_NONCE_SIZE) 3578 goto out; 3579 memcpy(aeadctx->nonce, keys.enckey + (keys.enckeylen 3580 - CTR_RFC3686_NONCE_SIZE), CTR_RFC3686_NONCE_SIZE); 3581 keys.enckeylen -= CTR_RFC3686_NONCE_SIZE; 3582 } 3583 if (keys.enckeylen == AES_KEYSIZE_128) { 3584 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128; 3585 } else if (keys.enckeylen == AES_KEYSIZE_192) { 3586 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_192; 3587 } else if (keys.enckeylen == AES_KEYSIZE_256) { 3588 ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_256; 3589 } else { 3590 pr_err("chcr : Unsupported cipher key %d\n", keys.enckeylen); 3591 goto out; 3592 } 3593 memcpy(aeadctx->key, keys.enckey, keys.enckeylen); 3594 aeadctx->enckey_len = keys.enckeylen; 3595 if (subtype == CRYPTO_ALG_SUB_TYPE_CBC_SHA || 3596 subtype == CRYPTO_ALG_SUB_TYPE_CBC_NULL) { 3597 get_aes_decrypt_key(actx->dec_rrkey, aeadctx->key, 3598 aeadctx->enckey_len << 3); 3599 } 3600 key_ctx_len = sizeof(struct _key_ctx) + roundup(keys.enckeylen, 16); 3601 3602 aeadctx->key_ctx_hdr = FILL_KEY_CTX_HDR(ck_size, CHCR_KEYCTX_NO_KEY, 0, 3603 0, key_ctx_len >> 4); 3604 actx->auth_mode = CHCR_SCMD_AUTH_MODE_NOP; 3605 memzero_explicit(&keys, sizeof(keys)); 3606 return 0; 3607 out: 3608 aeadctx->enckey_len = 0; 3609 memzero_explicit(&keys, sizeof(keys)); 3610 return -EINVAL; 3611 } 3612 3613 static int chcr_aead_op(struct aead_request *req, 3614 int size, 3615 create_wr_t create_wr_fn) 3616 { 3617 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 3618 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); 3619 struct uld_ctx *u_ctx; 3620 struct sk_buff *skb; 3621 int isfull = 0; 3622 struct chcr_dev *cdev; 3623 3624 cdev = a_ctx(tfm)->dev; 3625 if (!cdev) { 3626 pr_err("chcr : %s : No crypto device.\n", __func__); 3627 return -ENXIO; 3628 } 3629 3630 if (chcr_inc_wrcount(cdev)) { 3631 /* Detach state for CHCR means lldi or padap is freed. 3632 * We cannot increment fallback here. 3633 */ 3634 return chcr_aead_fallback(req, reqctx->op); 3635 } 3636 3637 u_ctx = ULD_CTX(a_ctx(tfm)); 3638 if (cxgb4_is_crypto_q_full(u_ctx->lldi.ports[0], 3639 a_ctx(tfm)->tx_qidx)) { 3640 isfull = 1; 3641 if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) { 3642 chcr_dec_wrcount(cdev); 3643 return -ENOSPC; 3644 } 3645 } 3646 3647 /* Form a WR from req */ 3648 skb = create_wr_fn(req, u_ctx->lldi.rxq_ids[a_ctx(tfm)->rx_qidx], size); 3649 3650 if (IS_ERR_OR_NULL(skb)) { 3651 chcr_dec_wrcount(cdev); 3652 return PTR_ERR_OR_ZERO(skb); 3653 } 3654 3655 skb->dev = u_ctx->lldi.ports[0]; 3656 set_wr_txq(skb, CPL_PRIORITY_DATA, a_ctx(tfm)->tx_qidx); 3657 chcr_send_wr(skb); 3658 return isfull ? -EBUSY : -EINPROGRESS; 3659 } 3660 3661 static int chcr_aead_encrypt(struct aead_request *req) 3662 { 3663 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 3664 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); 3665 3666 reqctx->verify = VERIFY_HW; 3667 reqctx->op = CHCR_ENCRYPT_OP; 3668 3669 switch (get_aead_subtype(tfm)) { 3670 case CRYPTO_ALG_SUB_TYPE_CTR_SHA: 3671 case CRYPTO_ALG_SUB_TYPE_CBC_SHA: 3672 case CRYPTO_ALG_SUB_TYPE_CBC_NULL: 3673 case CRYPTO_ALG_SUB_TYPE_CTR_NULL: 3674 return chcr_aead_op(req, 0, create_authenc_wr); 3675 case CRYPTO_ALG_SUB_TYPE_AEAD_CCM: 3676 case CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309: 3677 return chcr_aead_op(req, 0, create_aead_ccm_wr); 3678 default: 3679 return chcr_aead_op(req, 0, create_gcm_wr); 3680 } 3681 } 3682 3683 static int chcr_aead_decrypt(struct aead_request *req) 3684 { 3685 struct crypto_aead *tfm = crypto_aead_reqtfm(req); 3686 struct chcr_aead_ctx *aeadctx = AEAD_CTX(a_ctx(tfm)); 3687 struct chcr_aead_reqctx *reqctx = aead_request_ctx(req); 3688 int size; 3689 3690 if (aeadctx->mayverify == VERIFY_SW) { 3691 size = crypto_aead_maxauthsize(tfm); 3692 reqctx->verify = VERIFY_SW; 3693 } else { 3694 size = 0; 3695 reqctx->verify = VERIFY_HW; 3696 } 3697 reqctx->op = CHCR_DECRYPT_OP; 3698 switch (get_aead_subtype(tfm)) { 3699 case CRYPTO_ALG_SUB_TYPE_CBC_SHA: 3700 case CRYPTO_ALG_SUB_TYPE_CTR_SHA: 3701 case CRYPTO_ALG_SUB_TYPE_CBC_NULL: 3702 case CRYPTO_ALG_SUB_TYPE_CTR_NULL: 3703 return chcr_aead_op(req, size, create_authenc_wr); 3704 case CRYPTO_ALG_SUB_TYPE_AEAD_CCM: 3705 case CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309: 3706 return chcr_aead_op(req, size, create_aead_ccm_wr); 3707 default: 3708 return chcr_aead_op(req, size, create_gcm_wr); 3709 } 3710 } 3711 3712 static struct chcr_alg_template driver_algs[] = { 3713 /* AES-CBC */ 3714 { 3715 .type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_SUB_TYPE_CBC, 3716 .is_registered = 0, 3717 .alg.crypto = { 3718 .cra_name = "cbc(aes)", 3719 .cra_driver_name = "cbc-aes-chcr", 3720 .cra_blocksize = AES_BLOCK_SIZE, 3721 .cra_init = chcr_cra_init, 3722 .cra_exit = chcr_cra_exit, 3723 .cra_u.ablkcipher = { 3724 .min_keysize = AES_MIN_KEY_SIZE, 3725 .max_keysize = AES_MAX_KEY_SIZE, 3726 .ivsize = AES_BLOCK_SIZE, 3727 .setkey = chcr_aes_cbc_setkey, 3728 .encrypt = chcr_aes_encrypt, 3729 .decrypt = chcr_aes_decrypt, 3730 } 3731 } 3732 }, 3733 { 3734 .type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_SUB_TYPE_XTS, 3735 .is_registered = 0, 3736 .alg.crypto = { 3737 .cra_name = "xts(aes)", 3738 .cra_driver_name = "xts-aes-chcr", 3739 .cra_blocksize = AES_BLOCK_SIZE, 3740 .cra_init = chcr_cra_init, 3741 .cra_exit = NULL, 3742 .cra_u .ablkcipher = { 3743 .min_keysize = 2 * AES_MIN_KEY_SIZE, 3744 .max_keysize = 2 * AES_MAX_KEY_SIZE, 3745 .ivsize = AES_BLOCK_SIZE, 3746 .setkey = chcr_aes_xts_setkey, 3747 .encrypt = chcr_aes_encrypt, 3748 .decrypt = chcr_aes_decrypt, 3749 } 3750 } 3751 }, 3752 { 3753 .type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_SUB_TYPE_CTR, 3754 .is_registered = 0, 3755 .alg.crypto = { 3756 .cra_name = "ctr(aes)", 3757 .cra_driver_name = "ctr-aes-chcr", 3758 .cra_blocksize = 1, 3759 .cra_init = chcr_cra_init, 3760 .cra_exit = chcr_cra_exit, 3761 .cra_u.ablkcipher = { 3762 .min_keysize = AES_MIN_KEY_SIZE, 3763 .max_keysize = AES_MAX_KEY_SIZE, 3764 .ivsize = AES_BLOCK_SIZE, 3765 .setkey = chcr_aes_ctr_setkey, 3766 .encrypt = chcr_aes_encrypt, 3767 .decrypt = chcr_aes_decrypt, 3768 } 3769 } 3770 }, 3771 { 3772 .type = CRYPTO_ALG_TYPE_ABLKCIPHER | 3773 CRYPTO_ALG_SUB_TYPE_CTR_RFC3686, 3774 .is_registered = 0, 3775 .alg.crypto = { 3776 .cra_name = "rfc3686(ctr(aes))", 3777 .cra_driver_name = "rfc3686-ctr-aes-chcr", 3778 .cra_blocksize = 1, 3779 .cra_init = chcr_rfc3686_init, 3780 .cra_exit = chcr_cra_exit, 3781 .cra_u.ablkcipher = { 3782 .min_keysize = AES_MIN_KEY_SIZE + 3783 CTR_RFC3686_NONCE_SIZE, 3784 .max_keysize = AES_MAX_KEY_SIZE + 3785 CTR_RFC3686_NONCE_SIZE, 3786 .ivsize = CTR_RFC3686_IV_SIZE, 3787 .setkey = chcr_aes_rfc3686_setkey, 3788 .encrypt = chcr_aes_encrypt, 3789 .decrypt = chcr_aes_decrypt, 3790 } 3791 } 3792 }, 3793 /* SHA */ 3794 { 3795 .type = CRYPTO_ALG_TYPE_AHASH, 3796 .is_registered = 0, 3797 .alg.hash = { 3798 .halg.digestsize = SHA1_DIGEST_SIZE, 3799 .halg.base = { 3800 .cra_name = "sha1", 3801 .cra_driver_name = "sha1-chcr", 3802 .cra_blocksize = SHA1_BLOCK_SIZE, 3803 } 3804 } 3805 }, 3806 { 3807 .type = CRYPTO_ALG_TYPE_AHASH, 3808 .is_registered = 0, 3809 .alg.hash = { 3810 .halg.digestsize = SHA256_DIGEST_SIZE, 3811 .halg.base = { 3812 .cra_name = "sha256", 3813 .cra_driver_name = "sha256-chcr", 3814 .cra_blocksize = SHA256_BLOCK_SIZE, 3815 } 3816 } 3817 }, 3818 { 3819 .type = CRYPTO_ALG_TYPE_AHASH, 3820 .is_registered = 0, 3821 .alg.hash = { 3822 .halg.digestsize = SHA224_DIGEST_SIZE, 3823 .halg.base = { 3824 .cra_name = "sha224", 3825 .cra_driver_name = "sha224-chcr", 3826 .cra_blocksize = SHA224_BLOCK_SIZE, 3827 } 3828 } 3829 }, 3830 { 3831 .type = CRYPTO_ALG_TYPE_AHASH, 3832 .is_registered = 0, 3833 .alg.hash = { 3834 .halg.digestsize = SHA384_DIGEST_SIZE, 3835 .halg.base = { 3836 .cra_name = "sha384", 3837 .cra_driver_name = "sha384-chcr", 3838 .cra_blocksize = SHA384_BLOCK_SIZE, 3839 } 3840 } 3841 }, 3842 { 3843 .type = CRYPTO_ALG_TYPE_AHASH, 3844 .is_registered = 0, 3845 .alg.hash = { 3846 .halg.digestsize = SHA512_DIGEST_SIZE, 3847 .halg.base = { 3848 .cra_name = "sha512", 3849 .cra_driver_name = "sha512-chcr", 3850 .cra_blocksize = SHA512_BLOCK_SIZE, 3851 } 3852 } 3853 }, 3854 /* HMAC */ 3855 { 3856 .type = CRYPTO_ALG_TYPE_HMAC, 3857 .is_registered = 0, 3858 .alg.hash = { 3859 .halg.digestsize = SHA1_DIGEST_SIZE, 3860 .halg.base = { 3861 .cra_name = "hmac(sha1)", 3862 .cra_driver_name = "hmac-sha1-chcr", 3863 .cra_blocksize = SHA1_BLOCK_SIZE, 3864 } 3865 } 3866 }, 3867 { 3868 .type = CRYPTO_ALG_TYPE_HMAC, 3869 .is_registered = 0, 3870 .alg.hash = { 3871 .halg.digestsize = SHA224_DIGEST_SIZE, 3872 .halg.base = { 3873 .cra_name = "hmac(sha224)", 3874 .cra_driver_name = "hmac-sha224-chcr", 3875 .cra_blocksize = SHA224_BLOCK_SIZE, 3876 } 3877 } 3878 }, 3879 { 3880 .type = CRYPTO_ALG_TYPE_HMAC, 3881 .is_registered = 0, 3882 .alg.hash = { 3883 .halg.digestsize = SHA256_DIGEST_SIZE, 3884 .halg.base = { 3885 .cra_name = "hmac(sha256)", 3886 .cra_driver_name = "hmac-sha256-chcr", 3887 .cra_blocksize = SHA256_BLOCK_SIZE, 3888 } 3889 } 3890 }, 3891 { 3892 .type = CRYPTO_ALG_TYPE_HMAC, 3893 .is_registered = 0, 3894 .alg.hash = { 3895 .halg.digestsize = SHA384_DIGEST_SIZE, 3896 .halg.base = { 3897 .cra_name = "hmac(sha384)", 3898 .cra_driver_name = "hmac-sha384-chcr", 3899 .cra_blocksize = SHA384_BLOCK_SIZE, 3900 } 3901 } 3902 }, 3903 { 3904 .type = CRYPTO_ALG_TYPE_HMAC, 3905 .is_registered = 0, 3906 .alg.hash = { 3907 .halg.digestsize = SHA512_DIGEST_SIZE, 3908 .halg.base = { 3909 .cra_name = "hmac(sha512)", 3910 .cra_driver_name = "hmac-sha512-chcr", 3911 .cra_blocksize = SHA512_BLOCK_SIZE, 3912 } 3913 } 3914 }, 3915 /* Add AEAD Algorithms */ 3916 { 3917 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_GCM, 3918 .is_registered = 0, 3919 .alg.aead = { 3920 .base = { 3921 .cra_name = "gcm(aes)", 3922 .cra_driver_name = "gcm-aes-chcr", 3923 .cra_blocksize = 1, 3924 .cra_priority = CHCR_AEAD_PRIORITY, 3925 .cra_ctxsize = sizeof(struct chcr_context) + 3926 sizeof(struct chcr_aead_ctx) + 3927 sizeof(struct chcr_gcm_ctx), 3928 }, 3929 .ivsize = GCM_AES_IV_SIZE, 3930 .maxauthsize = GHASH_DIGEST_SIZE, 3931 .setkey = chcr_gcm_setkey, 3932 .setauthsize = chcr_gcm_setauthsize, 3933 } 3934 }, 3935 { 3936 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106, 3937 .is_registered = 0, 3938 .alg.aead = { 3939 .base = { 3940 .cra_name = "rfc4106(gcm(aes))", 3941 .cra_driver_name = "rfc4106-gcm-aes-chcr", 3942 .cra_blocksize = 1, 3943 .cra_priority = CHCR_AEAD_PRIORITY + 1, 3944 .cra_ctxsize = sizeof(struct chcr_context) + 3945 sizeof(struct chcr_aead_ctx) + 3946 sizeof(struct chcr_gcm_ctx), 3947 3948 }, 3949 .ivsize = GCM_RFC4106_IV_SIZE, 3950 .maxauthsize = GHASH_DIGEST_SIZE, 3951 .setkey = chcr_gcm_setkey, 3952 .setauthsize = chcr_4106_4309_setauthsize, 3953 } 3954 }, 3955 { 3956 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_CCM, 3957 .is_registered = 0, 3958 .alg.aead = { 3959 .base = { 3960 .cra_name = "ccm(aes)", 3961 .cra_driver_name = "ccm-aes-chcr", 3962 .cra_blocksize = 1, 3963 .cra_priority = CHCR_AEAD_PRIORITY, 3964 .cra_ctxsize = sizeof(struct chcr_context) + 3965 sizeof(struct chcr_aead_ctx), 3966 3967 }, 3968 .ivsize = AES_BLOCK_SIZE, 3969 .maxauthsize = GHASH_DIGEST_SIZE, 3970 .setkey = chcr_aead_ccm_setkey, 3971 .setauthsize = chcr_ccm_setauthsize, 3972 } 3973 }, 3974 { 3975 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309, 3976 .is_registered = 0, 3977 .alg.aead = { 3978 .base = { 3979 .cra_name = "rfc4309(ccm(aes))", 3980 .cra_driver_name = "rfc4309-ccm-aes-chcr", 3981 .cra_blocksize = 1, 3982 .cra_priority = CHCR_AEAD_PRIORITY + 1, 3983 .cra_ctxsize = sizeof(struct chcr_context) + 3984 sizeof(struct chcr_aead_ctx), 3985 3986 }, 3987 .ivsize = 8, 3988 .maxauthsize = GHASH_DIGEST_SIZE, 3989 .setkey = chcr_aead_rfc4309_setkey, 3990 .setauthsize = chcr_4106_4309_setauthsize, 3991 } 3992 }, 3993 { 3994 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA, 3995 .is_registered = 0, 3996 .alg.aead = { 3997 .base = { 3998 .cra_name = "authenc(hmac(sha1),cbc(aes))", 3999 .cra_driver_name = 4000 "authenc-hmac-sha1-cbc-aes-chcr", 4001 .cra_blocksize = AES_BLOCK_SIZE, 4002 .cra_priority = CHCR_AEAD_PRIORITY, 4003 .cra_ctxsize = sizeof(struct chcr_context) + 4004 sizeof(struct chcr_aead_ctx) + 4005 sizeof(struct chcr_authenc_ctx), 4006 4007 }, 4008 .ivsize = AES_BLOCK_SIZE, 4009 .maxauthsize = SHA1_DIGEST_SIZE, 4010 .setkey = chcr_authenc_setkey, 4011 .setauthsize = chcr_authenc_setauthsize, 4012 } 4013 }, 4014 { 4015 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA, 4016 .is_registered = 0, 4017 .alg.aead = { 4018 .base = { 4019 4020 .cra_name = "authenc(hmac(sha256),cbc(aes))", 4021 .cra_driver_name = 4022 "authenc-hmac-sha256-cbc-aes-chcr", 4023 .cra_blocksize = AES_BLOCK_SIZE, 4024 .cra_priority = CHCR_AEAD_PRIORITY, 4025 .cra_ctxsize = sizeof(struct chcr_context) + 4026 sizeof(struct chcr_aead_ctx) + 4027 sizeof(struct chcr_authenc_ctx), 4028 4029 }, 4030 .ivsize = AES_BLOCK_SIZE, 4031 .maxauthsize = SHA256_DIGEST_SIZE, 4032 .setkey = chcr_authenc_setkey, 4033 .setauthsize = chcr_authenc_setauthsize, 4034 } 4035 }, 4036 { 4037 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA, 4038 .is_registered = 0, 4039 .alg.aead = { 4040 .base = { 4041 .cra_name = "authenc(hmac(sha224),cbc(aes))", 4042 .cra_driver_name = 4043 "authenc-hmac-sha224-cbc-aes-chcr", 4044 .cra_blocksize = AES_BLOCK_SIZE, 4045 .cra_priority = CHCR_AEAD_PRIORITY, 4046 .cra_ctxsize = sizeof(struct chcr_context) + 4047 sizeof(struct chcr_aead_ctx) + 4048 sizeof(struct chcr_authenc_ctx), 4049 }, 4050 .ivsize = AES_BLOCK_SIZE, 4051 .maxauthsize = SHA224_DIGEST_SIZE, 4052 .setkey = chcr_authenc_setkey, 4053 .setauthsize = chcr_authenc_setauthsize, 4054 } 4055 }, 4056 { 4057 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA, 4058 .is_registered = 0, 4059 .alg.aead = { 4060 .base = { 4061 .cra_name = "authenc(hmac(sha384),cbc(aes))", 4062 .cra_driver_name = 4063 "authenc-hmac-sha384-cbc-aes-chcr", 4064 .cra_blocksize = AES_BLOCK_SIZE, 4065 .cra_priority = CHCR_AEAD_PRIORITY, 4066 .cra_ctxsize = sizeof(struct chcr_context) + 4067 sizeof(struct chcr_aead_ctx) + 4068 sizeof(struct chcr_authenc_ctx), 4069 4070 }, 4071 .ivsize = AES_BLOCK_SIZE, 4072 .maxauthsize = SHA384_DIGEST_SIZE, 4073 .setkey = chcr_authenc_setkey, 4074 .setauthsize = chcr_authenc_setauthsize, 4075 } 4076 }, 4077 { 4078 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CBC_SHA, 4079 .is_registered = 0, 4080 .alg.aead = { 4081 .base = { 4082 .cra_name = "authenc(hmac(sha512),cbc(aes))", 4083 .cra_driver_name = 4084 "authenc-hmac-sha512-cbc-aes-chcr", 4085 .cra_blocksize = AES_BLOCK_SIZE, 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 = AES_BLOCK_SIZE, 4093 .maxauthsize = SHA512_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_CBC_NULL, 4100 .is_registered = 0, 4101 .alg.aead = { 4102 .base = { 4103 .cra_name = "authenc(digest_null,cbc(aes))", 4104 .cra_driver_name = 4105 "authenc-digest_null-cbc-aes-chcr", 4106 .cra_blocksize = AES_BLOCK_SIZE, 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 }, 4113 .ivsize = AES_BLOCK_SIZE, 4114 .maxauthsize = 0, 4115 .setkey = chcr_aead_digest_null_setkey, 4116 .setauthsize = chcr_authenc_null_setauthsize, 4117 } 4118 }, 4119 { 4120 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA, 4121 .is_registered = 0, 4122 .alg.aead = { 4123 .base = { 4124 .cra_name = "authenc(hmac(sha1),rfc3686(ctr(aes)))", 4125 .cra_driver_name = 4126 "authenc-hmac-sha1-rfc3686-ctr-aes-chcr", 4127 .cra_blocksize = 1, 4128 .cra_priority = CHCR_AEAD_PRIORITY, 4129 .cra_ctxsize = sizeof(struct chcr_context) + 4130 sizeof(struct chcr_aead_ctx) + 4131 sizeof(struct chcr_authenc_ctx), 4132 4133 }, 4134 .ivsize = CTR_RFC3686_IV_SIZE, 4135 .maxauthsize = SHA1_DIGEST_SIZE, 4136 .setkey = chcr_authenc_setkey, 4137 .setauthsize = chcr_authenc_setauthsize, 4138 } 4139 }, 4140 { 4141 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA, 4142 .is_registered = 0, 4143 .alg.aead = { 4144 .base = { 4145 4146 .cra_name = "authenc(hmac(sha256),rfc3686(ctr(aes)))", 4147 .cra_driver_name = 4148 "authenc-hmac-sha256-rfc3686-ctr-aes-chcr", 4149 .cra_blocksize = 1, 4150 .cra_priority = CHCR_AEAD_PRIORITY, 4151 .cra_ctxsize = sizeof(struct chcr_context) + 4152 sizeof(struct chcr_aead_ctx) + 4153 sizeof(struct chcr_authenc_ctx), 4154 4155 }, 4156 .ivsize = CTR_RFC3686_IV_SIZE, 4157 .maxauthsize = SHA256_DIGEST_SIZE, 4158 .setkey = chcr_authenc_setkey, 4159 .setauthsize = chcr_authenc_setauthsize, 4160 } 4161 }, 4162 { 4163 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA, 4164 .is_registered = 0, 4165 .alg.aead = { 4166 .base = { 4167 .cra_name = "authenc(hmac(sha224),rfc3686(ctr(aes)))", 4168 .cra_driver_name = 4169 "authenc-hmac-sha224-rfc3686-ctr-aes-chcr", 4170 .cra_blocksize = 1, 4171 .cra_priority = CHCR_AEAD_PRIORITY, 4172 .cra_ctxsize = sizeof(struct chcr_context) + 4173 sizeof(struct chcr_aead_ctx) + 4174 sizeof(struct chcr_authenc_ctx), 4175 }, 4176 .ivsize = CTR_RFC3686_IV_SIZE, 4177 .maxauthsize = SHA224_DIGEST_SIZE, 4178 .setkey = chcr_authenc_setkey, 4179 .setauthsize = chcr_authenc_setauthsize, 4180 } 4181 }, 4182 { 4183 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA, 4184 .is_registered = 0, 4185 .alg.aead = { 4186 .base = { 4187 .cra_name = "authenc(hmac(sha384),rfc3686(ctr(aes)))", 4188 .cra_driver_name = 4189 "authenc-hmac-sha384-rfc3686-ctr-aes-chcr", 4190 .cra_blocksize = 1, 4191 .cra_priority = CHCR_AEAD_PRIORITY, 4192 .cra_ctxsize = sizeof(struct chcr_context) + 4193 sizeof(struct chcr_aead_ctx) + 4194 sizeof(struct chcr_authenc_ctx), 4195 4196 }, 4197 .ivsize = CTR_RFC3686_IV_SIZE, 4198 .maxauthsize = SHA384_DIGEST_SIZE, 4199 .setkey = chcr_authenc_setkey, 4200 .setauthsize = chcr_authenc_setauthsize, 4201 } 4202 }, 4203 { 4204 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_SHA, 4205 .is_registered = 0, 4206 .alg.aead = { 4207 .base = { 4208 .cra_name = "authenc(hmac(sha512),rfc3686(ctr(aes)))", 4209 .cra_driver_name = 4210 "authenc-hmac-sha512-rfc3686-ctr-aes-chcr", 4211 .cra_blocksize = 1, 4212 .cra_priority = CHCR_AEAD_PRIORITY, 4213 .cra_ctxsize = sizeof(struct chcr_context) + 4214 sizeof(struct chcr_aead_ctx) + 4215 sizeof(struct chcr_authenc_ctx), 4216 4217 }, 4218 .ivsize = CTR_RFC3686_IV_SIZE, 4219 .maxauthsize = SHA512_DIGEST_SIZE, 4220 .setkey = chcr_authenc_setkey, 4221 .setauthsize = chcr_authenc_setauthsize, 4222 } 4223 }, 4224 { 4225 .type = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_SUB_TYPE_CTR_NULL, 4226 .is_registered = 0, 4227 .alg.aead = { 4228 .base = { 4229 .cra_name = "authenc(digest_null,rfc3686(ctr(aes)))", 4230 .cra_driver_name = 4231 "authenc-digest_null-rfc3686-ctr-aes-chcr", 4232 .cra_blocksize = 1, 4233 .cra_priority = CHCR_AEAD_PRIORITY, 4234 .cra_ctxsize = sizeof(struct chcr_context) + 4235 sizeof(struct chcr_aead_ctx) + 4236 sizeof(struct chcr_authenc_ctx), 4237 4238 }, 4239 .ivsize = CTR_RFC3686_IV_SIZE, 4240 .maxauthsize = 0, 4241 .setkey = chcr_aead_digest_null_setkey, 4242 .setauthsize = chcr_authenc_null_setauthsize, 4243 } 4244 }, 4245 }; 4246 4247 /* 4248 * chcr_unregister_alg - Deregister crypto algorithms with 4249 * kernel framework. 4250 */ 4251 static int chcr_unregister_alg(void) 4252 { 4253 int i; 4254 4255 for (i = 0; i < ARRAY_SIZE(driver_algs); i++) { 4256 switch (driver_algs[i].type & CRYPTO_ALG_TYPE_MASK) { 4257 case CRYPTO_ALG_TYPE_ABLKCIPHER: 4258 if (driver_algs[i].is_registered) 4259 crypto_unregister_alg( 4260 &driver_algs[i].alg.crypto); 4261 break; 4262 case CRYPTO_ALG_TYPE_AEAD: 4263 if (driver_algs[i].is_registered) 4264 crypto_unregister_aead( 4265 &driver_algs[i].alg.aead); 4266 break; 4267 case CRYPTO_ALG_TYPE_AHASH: 4268 if (driver_algs[i].is_registered) 4269 crypto_unregister_ahash( 4270 &driver_algs[i].alg.hash); 4271 break; 4272 } 4273 driver_algs[i].is_registered = 0; 4274 } 4275 return 0; 4276 } 4277 4278 #define SZ_AHASH_CTX sizeof(struct chcr_context) 4279 #define SZ_AHASH_H_CTX (sizeof(struct chcr_context) + sizeof(struct hmac_ctx)) 4280 #define SZ_AHASH_REQ_CTX sizeof(struct chcr_ahash_req_ctx) 4281 4282 /* 4283 * chcr_register_alg - Register crypto algorithms with kernel framework. 4284 */ 4285 static int chcr_register_alg(void) 4286 { 4287 struct crypto_alg ai; 4288 struct ahash_alg *a_hash; 4289 int err = 0, i; 4290 char *name = NULL; 4291 4292 for (i = 0; i < ARRAY_SIZE(driver_algs); i++) { 4293 if (driver_algs[i].is_registered) 4294 continue; 4295 switch (driver_algs[i].type & CRYPTO_ALG_TYPE_MASK) { 4296 case CRYPTO_ALG_TYPE_ABLKCIPHER: 4297 driver_algs[i].alg.crypto.cra_priority = 4298 CHCR_CRA_PRIORITY; 4299 driver_algs[i].alg.crypto.cra_module = THIS_MODULE; 4300 driver_algs[i].alg.crypto.cra_flags = 4301 CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC | 4302 CRYPTO_ALG_NEED_FALLBACK; 4303 driver_algs[i].alg.crypto.cra_ctxsize = 4304 sizeof(struct chcr_context) + 4305 sizeof(struct ablk_ctx); 4306 driver_algs[i].alg.crypto.cra_alignmask = 0; 4307 driver_algs[i].alg.crypto.cra_type = 4308 &crypto_ablkcipher_type; 4309 err = crypto_register_alg(&driver_algs[i].alg.crypto); 4310 name = driver_algs[i].alg.crypto.cra_driver_name; 4311 break; 4312 case CRYPTO_ALG_TYPE_AEAD: 4313 driver_algs[i].alg.aead.base.cra_flags = 4314 CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK; 4315 driver_algs[i].alg.aead.encrypt = chcr_aead_encrypt; 4316 driver_algs[i].alg.aead.decrypt = chcr_aead_decrypt; 4317 driver_algs[i].alg.aead.init = chcr_aead_cra_init; 4318 driver_algs[i].alg.aead.exit = chcr_aead_cra_exit; 4319 driver_algs[i].alg.aead.base.cra_module = THIS_MODULE; 4320 err = crypto_register_aead(&driver_algs[i].alg.aead); 4321 name = driver_algs[i].alg.aead.base.cra_driver_name; 4322 break; 4323 case CRYPTO_ALG_TYPE_AHASH: 4324 a_hash = &driver_algs[i].alg.hash; 4325 a_hash->update = chcr_ahash_update; 4326 a_hash->final = chcr_ahash_final; 4327 a_hash->finup = chcr_ahash_finup; 4328 a_hash->digest = chcr_ahash_digest; 4329 a_hash->export = chcr_ahash_export; 4330 a_hash->import = chcr_ahash_import; 4331 a_hash->halg.statesize = SZ_AHASH_REQ_CTX; 4332 a_hash->halg.base.cra_priority = CHCR_CRA_PRIORITY; 4333 a_hash->halg.base.cra_module = THIS_MODULE; 4334 a_hash->halg.base.cra_flags = CRYPTO_ALG_ASYNC; 4335 a_hash->halg.base.cra_alignmask = 0; 4336 a_hash->halg.base.cra_exit = NULL; 4337 4338 if (driver_algs[i].type == CRYPTO_ALG_TYPE_HMAC) { 4339 a_hash->halg.base.cra_init = chcr_hmac_cra_init; 4340 a_hash->halg.base.cra_exit = chcr_hmac_cra_exit; 4341 a_hash->init = chcr_hmac_init; 4342 a_hash->setkey = chcr_ahash_setkey; 4343 a_hash->halg.base.cra_ctxsize = SZ_AHASH_H_CTX; 4344 } else { 4345 a_hash->init = chcr_sha_init; 4346 a_hash->halg.base.cra_ctxsize = SZ_AHASH_CTX; 4347 a_hash->halg.base.cra_init = chcr_sha_cra_init; 4348 } 4349 err = crypto_register_ahash(&driver_algs[i].alg.hash); 4350 ai = driver_algs[i].alg.hash.halg.base; 4351 name = ai.cra_driver_name; 4352 break; 4353 } 4354 if (err) { 4355 pr_err("chcr : %s : Algorithm registration failed\n", 4356 name); 4357 goto register_err; 4358 } else { 4359 driver_algs[i].is_registered = 1; 4360 } 4361 } 4362 return 0; 4363 4364 register_err: 4365 chcr_unregister_alg(); 4366 return err; 4367 } 4368 4369 /* 4370 * start_crypto - Register the crypto algorithms. 4371 * This should called once when the first device comesup. After this 4372 * kernel will start calling driver APIs for crypto operations. 4373 */ 4374 int start_crypto(void) 4375 { 4376 return chcr_register_alg(); 4377 } 4378 4379 /* 4380 * stop_crypto - Deregister all the crypto algorithms with kernel. 4381 * This should be called once when the last device goes down. After this 4382 * kernel will not call the driver API for crypto operations. 4383 */ 4384 int stop_crypto(void) 4385 { 4386 chcr_unregister_alg(); 4387 return 0; 4388 } 4389