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