1168404Spjd/* 2168404Spjd * CDDL HEADER START 3168404Spjd * 4168404Spjd * The contents of this file are subject to the terms of the 5168404Spjd * Common Development and Distribution License (the "License"). 6168404Spjd * You may not use this file except in compliance with the License. 7168404Spjd * 8168404Spjd * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9168404Spjd * or http://www.opensolaris.org/os/licensing. 10168404Spjd * See the License for the specific language governing permissions 11168404Spjd * and limitations under the License. 12168404Spjd * 13168404Spjd * When distributing Covered Code, include this CDDL HEADER in each 14168404Spjd * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15168404Spjd * If applicable, add the following below this CDDL HEADER, with the 16168404Spjd * fields enclosed by brackets "[]" replaced with your own identifying 17168404Spjd * information: Portions Copyright [yyyy] [name of copyright owner] 18168404Spjd * 19168404Spjd * CDDL HEADER END 20168404Spjd */ 21168404Spjd/* 22219089Spjd * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 23321533Smav * Copyright (c) 2013, 2016 by Delphix. All rights reserved. 24255750Sdelphij * Copyright (c) 2013, Joyent, Inc. All rights reserved. 25289422Smav * Copyright 2013 Saso Kiselkov. All rights reserved. 26168404Spjd */ 27168404Spjd 28168404Spjd#include <sys/zfs_context.h> 29168404Spjd#include <sys/spa.h> 30289422Smav#include <sys/spa_impl.h> 31168404Spjd#include <sys/zio.h> 32168404Spjd#include <sys/zio_checksum.h> 33219089Spjd#include <sys/zil.h> 34321610Smav#include <sys/abd.h> 35219089Spjd#include <zfs_fletcher.h> 36168404Spjd 37168404Spjd/* 38168404Spjd * Checksum vectors. 39168404Spjd * 40168404Spjd * In the SPA, everything is checksummed. We support checksum vectors 41168404Spjd * for three distinct reasons: 42168404Spjd * 43168404Spjd * 1. Different kinds of data need different levels of protection. 44168404Spjd * For SPA metadata, we always want a very strong checksum. 45168404Spjd * For user data, we let users make the trade-off between speed 46168404Spjd * and checksum strength. 47168404Spjd * 48168404Spjd * 2. Cryptographic hash and MAC algorithms are an area of active research. 49168404Spjd * It is likely that in future hash functions will be at least as strong 50168404Spjd * as current best-of-breed, and may be substantially faster as well. 51168404Spjd * We want the ability to take advantage of these new hashes as soon as 52168404Spjd * they become available. 53168404Spjd * 54168404Spjd * 3. If someone develops hardware that can compute a strong hash quickly, 55168404Spjd * we want the ability to take advantage of that hardware. 56168404Spjd * 57168404Spjd * Of course, we don't want a checksum upgrade to invalidate existing 58219089Spjd * data, so we store the checksum *function* in eight bits of the bp. 59219089Spjd * This gives us room for up to 256 different checksum functions. 60168404Spjd * 61168404Spjd * When writing a block, we always checksum it with the latest-and-greatest 62168404Spjd * checksum function of the appropriate strength. When reading a block, 63168404Spjd * we compare the expected checksum against the actual checksum, which we 64219089Spjd * compute via the checksum function specified by BP_GET_CHECKSUM(bp). 65289422Smav * 66289422Smav * SALTED CHECKSUMS 67289422Smav * 68289422Smav * To enable the use of less secure hash algorithms with dedup, we 69289422Smav * introduce the notion of salted checksums (MACs, really). A salted 70289422Smav * checksum is fed both a random 256-bit value (the salt) and the data 71289422Smav * to be checksummed. This salt is kept secret (stored on the pool, but 72289422Smav * never shown to the user). Thus even if an attacker knew of collision 73289422Smav * weaknesses in the hash algorithm, they won't be able to mount a known 74289422Smav * plaintext attack on the DDT, since the actual hash value cannot be 75289422Smav * known ahead of time. How the salt is used is algorithm-specific 76289422Smav * (some might simply prefix it to the data block, others might need to 77289422Smav * utilize a full-blown HMAC). On disk the salt is stored in a ZAP 78289422Smav * object in the MOS (DMU_POOL_CHECKSUM_SALT). 79289422Smav * 80289422Smav * CONTEXT TEMPLATES 81289422Smav * 82289422Smav * Some hashing algorithms need to perform a substantial amount of 83289422Smav * initialization work (e.g. salted checksums above may need to pre-hash 84289422Smav * the salt) before being able to process data. Performing this 85289422Smav * redundant work for each block would be wasteful, so we instead allow 86289422Smav * a checksum algorithm to do the work once (the first time it's used) 87289422Smav * and then keep this pre-initialized context as a template inside the 88289422Smav * spa_t (spa_cksum_tmpls). If the zio_checksum_info_t contains 89289422Smav * non-NULL ci_tmpl_init and ci_tmpl_free callbacks, they are used to 90289422Smav * construct and destruct the pre-initialized checksum context. The 91289422Smav * pre-initialized context is then reused during each checksum 92289422Smav * invocation and passed to the checksum function. 93168404Spjd */ 94168404Spjd 95168404Spjd/*ARGSUSED*/ 96168404Spjdstatic void 97321610Smavabd_checksum_off(abd_t *abd, uint64_t size, 98289422Smav const void *ctx_template, zio_cksum_t *zcp) 99168404Spjd{ 100168404Spjd ZIO_SET_CHECKSUM(zcp, 0, 0, 0, 0); 101168404Spjd} 102168404Spjd 103321610Smav/*ARGSUSED*/ 104321610Smavvoid 105321610Smavabd_fletcher_2_native(abd_t *abd, uint64_t size, 106321610Smav const void *ctx_template, zio_cksum_t *zcp) 107321610Smav{ 108321610Smav fletcher_init(zcp); 109321610Smav (void) abd_iterate_func(abd, 0, size, 110321610Smav fletcher_2_incremental_native, zcp); 111321610Smav} 112321610Smav 113321610Smav/*ARGSUSED*/ 114321610Smavvoid 115321610Smavabd_fletcher_2_byteswap(abd_t *abd, uint64_t size, 116321610Smav const void *ctx_template, zio_cksum_t *zcp) 117321610Smav{ 118321610Smav fletcher_init(zcp); 119321610Smav (void) abd_iterate_func(abd, 0, size, 120321610Smav fletcher_2_incremental_byteswap, zcp); 121321610Smav} 122321610Smav 123321610Smav/*ARGSUSED*/ 124321610Smavvoid 125321610Smavabd_fletcher_4_native(abd_t *abd, uint64_t size, 126321610Smav const void *ctx_template, zio_cksum_t *zcp) 127321610Smav{ 128321610Smav fletcher_init(zcp); 129321610Smav (void) abd_iterate_func(abd, 0, size, 130321610Smav fletcher_4_incremental_native, zcp); 131321610Smav} 132321610Smav 133321610Smav/*ARGSUSED*/ 134321610Smavvoid 135321610Smavabd_fletcher_4_byteswap(abd_t *abd, uint64_t size, 136321610Smav const void *ctx_template, zio_cksum_t *zcp) 137321610Smav{ 138321610Smav fletcher_init(zcp); 139321610Smav (void) abd_iterate_func(abd, 0, size, 140321610Smav fletcher_4_incremental_byteswap, zcp); 141321610Smav} 142321610Smav 143168404Spjdzio_checksum_info_t zio_checksum_table[ZIO_CHECKSUM_FUNCTIONS] = { 144289422Smav {{NULL, NULL}, NULL, NULL, 0, "inherit"}, 145289422Smav {{NULL, NULL}, NULL, NULL, 0, "on"}, 146321610Smav {{abd_checksum_off, abd_checksum_off}, 147289422Smav NULL, NULL, 0, "off"}, 148321610Smav {{abd_checksum_SHA256, abd_checksum_SHA256}, 149289422Smav NULL, NULL, ZCHECKSUM_FLAG_METADATA | ZCHECKSUM_FLAG_EMBEDDED, 150289422Smav "label"}, 151321610Smav {{abd_checksum_SHA256, abd_checksum_SHA256}, 152289422Smav NULL, NULL, ZCHECKSUM_FLAG_METADATA | ZCHECKSUM_FLAG_EMBEDDED, 153289422Smav "gang_header"}, 154321610Smav {{abd_fletcher_2_native, abd_fletcher_2_byteswap}, 155289422Smav NULL, NULL, ZCHECKSUM_FLAG_EMBEDDED, "zilog"}, 156321610Smav {{abd_fletcher_2_native, abd_fletcher_2_byteswap}, 157289422Smav NULL, NULL, 0, "fletcher2"}, 158321610Smav {{abd_fletcher_4_native, abd_fletcher_4_byteswap}, 159289422Smav NULL, NULL, ZCHECKSUM_FLAG_METADATA, "fletcher4"}, 160321610Smav {{abd_checksum_SHA256, abd_checksum_SHA256}, 161289422Smav NULL, NULL, ZCHECKSUM_FLAG_METADATA | ZCHECKSUM_FLAG_DEDUP | 162289422Smav ZCHECKSUM_FLAG_NOPWRITE, "sha256"}, 163321610Smav {{abd_fletcher_4_native, abd_fletcher_4_byteswap}, 164289422Smav NULL, NULL, ZCHECKSUM_FLAG_EMBEDDED, "zilog2"}, 165321610Smav {{abd_checksum_off, abd_checksum_off}, 166289422Smav NULL, NULL, 0, "noparity"}, 167321610Smav {{abd_checksum_SHA512_native, abd_checksum_SHA512_byteswap}, 168289422Smav NULL, NULL, ZCHECKSUM_FLAG_METADATA | ZCHECKSUM_FLAG_DEDUP | 169289422Smav ZCHECKSUM_FLAG_NOPWRITE, "sha512"}, 170321610Smav {{abd_checksum_skein_native, abd_checksum_skein_byteswap}, 171321610Smav abd_checksum_skein_tmpl_init, abd_checksum_skein_tmpl_free, 172289422Smav ZCHECKSUM_FLAG_METADATA | ZCHECKSUM_FLAG_DEDUP | 173289422Smav ZCHECKSUM_FLAG_SALTED | ZCHECKSUM_FLAG_NOPWRITE, "skein"}, 174301010Sallanjude#ifdef illumos 175321610Smav {{abd_checksum_edonr_native, abd_checksum_edonr_byteswap}, 176321610Smav abd_checksum_edonr_tmpl_init, abd_checksum_edonr_tmpl_free, 177289422Smav ZCHECKSUM_FLAG_METADATA | ZCHECKSUM_FLAG_SALTED | 178289422Smav ZCHECKSUM_FLAG_NOPWRITE, "edonr"}, 179289422Smav#endif 180168404Spjd}; 181168404Spjd 182296523Smav/* 183296523Smav * The flag corresponding to the "verify" in dedup=[checksum,]verify 184296523Smav * must be cleared first, so callers should use ZIO_CHECKSUM_MASK. 185296523Smav */ 186289422Smavspa_feature_t 187289422Smavzio_checksum_to_feature(enum zio_checksum cksum) 188289422Smav{ 189296523Smav VERIFY((cksum & ~ZIO_CHECKSUM_MASK) == 0); 190296523Smav 191289422Smav switch (cksum) { 192289422Smav case ZIO_CHECKSUM_SHA512: 193289422Smav return (SPA_FEATURE_SHA512); 194289422Smav case ZIO_CHECKSUM_SKEIN: 195289422Smav return (SPA_FEATURE_SKEIN); 196301010Sallanjude#ifdef illumos 197289422Smav case ZIO_CHECKSUM_EDONR: 198289422Smav return (SPA_FEATURE_EDONR); 199301010Sallanjude#endif 200289422Smav } 201289422Smav return (SPA_FEATURE_NONE); 202289422Smav} 203289422Smav 204219089Spjdenum zio_checksum 205219089Spjdzio_checksum_select(enum zio_checksum child, enum zio_checksum parent) 206168404Spjd{ 207168404Spjd ASSERT(child < ZIO_CHECKSUM_FUNCTIONS); 208168404Spjd ASSERT(parent < ZIO_CHECKSUM_FUNCTIONS); 209168404Spjd ASSERT(parent != ZIO_CHECKSUM_INHERIT && parent != ZIO_CHECKSUM_ON); 210168404Spjd 211168404Spjd if (child == ZIO_CHECKSUM_INHERIT) 212168404Spjd return (parent); 213168404Spjd 214168404Spjd if (child == ZIO_CHECKSUM_ON) 215168404Spjd return (ZIO_CHECKSUM_ON_VALUE); 216168404Spjd 217168404Spjd return (child); 218168404Spjd} 219168404Spjd 220219089Spjdenum zio_checksum 221219089Spjdzio_checksum_dedup_select(spa_t *spa, enum zio_checksum child, 222219089Spjd enum zio_checksum parent) 223219089Spjd{ 224219089Spjd ASSERT((child & ZIO_CHECKSUM_MASK) < ZIO_CHECKSUM_FUNCTIONS); 225219089Spjd ASSERT((parent & ZIO_CHECKSUM_MASK) < ZIO_CHECKSUM_FUNCTIONS); 226219089Spjd ASSERT(parent != ZIO_CHECKSUM_INHERIT && parent != ZIO_CHECKSUM_ON); 227219089Spjd 228219089Spjd if (child == ZIO_CHECKSUM_INHERIT) 229219089Spjd return (parent); 230219089Spjd 231219089Spjd if (child == ZIO_CHECKSUM_ON) 232219089Spjd return (spa_dedup_checksum(spa)); 233219089Spjd 234219089Spjd if (child == (ZIO_CHECKSUM_ON | ZIO_CHECKSUM_VERIFY)) 235219089Spjd return (spa_dedup_checksum(spa) | ZIO_CHECKSUM_VERIFY); 236219089Spjd 237289422Smav ASSERT((zio_checksum_table[child & ZIO_CHECKSUM_MASK].ci_flags & 238289422Smav ZCHECKSUM_FLAG_DEDUP) || 239219089Spjd (child & ZIO_CHECKSUM_VERIFY) || child == ZIO_CHECKSUM_OFF); 240219089Spjd 241219089Spjd return (child); 242219089Spjd} 243219089Spjd 244168404Spjd/* 245185029Spjd * Set the external verifier for a gang block based on <vdev, offset, txg>, 246185029Spjd * a tuple which is guaranteed to be unique for the life of the pool. 247185029Spjd */ 248185029Spjdstatic void 249185029Spjdzio_checksum_gang_verifier(zio_cksum_t *zcp, blkptr_t *bp) 250185029Spjd{ 251185029Spjd dva_t *dva = BP_IDENTITY(bp); 252219089Spjd uint64_t txg = BP_PHYSICAL_BIRTH(bp); 253185029Spjd 254185029Spjd ASSERT(BP_IS_GANG(bp)); 255185029Spjd 256185029Spjd ZIO_SET_CHECKSUM(zcp, DVA_GET_VDEV(dva), DVA_GET_OFFSET(dva), txg, 0); 257185029Spjd} 258185029Spjd 259185029Spjd/* 260185029Spjd * Set the external verifier for a label block based on its offset. 261185029Spjd * The vdev is implicit, and the txg is unknowable at pool open time -- 262185029Spjd * hence the logic in vdev_uberblock_load() to find the most recent copy. 263185029Spjd */ 264185029Spjdstatic void 265185029Spjdzio_checksum_label_verifier(zio_cksum_t *zcp, uint64_t offset) 266185029Spjd{ 267185029Spjd ZIO_SET_CHECKSUM(zcp, offset, 0, 0, 0); 268185029Spjd} 269185029Spjd 270185029Spjd/* 271289422Smav * Calls the template init function of a checksum which supports context 272289422Smav * templates and installs the template into the spa_t. 273289422Smav */ 274289422Smavstatic void 275289422Smavzio_checksum_template_init(enum zio_checksum checksum, spa_t *spa) 276289422Smav{ 277289422Smav zio_checksum_info_t *ci = &zio_checksum_table[checksum]; 278289422Smav 279289422Smav if (ci->ci_tmpl_init == NULL) 280289422Smav return; 281289422Smav if (spa->spa_cksum_tmpls[checksum] != NULL) 282289422Smav return; 283289422Smav 284289422Smav VERIFY(ci->ci_tmpl_free != NULL); 285289422Smav mutex_enter(&spa->spa_cksum_tmpls_lock); 286289422Smav if (spa->spa_cksum_tmpls[checksum] == NULL) { 287289422Smav spa->spa_cksum_tmpls[checksum] = 288289422Smav ci->ci_tmpl_init(&spa->spa_cksum_salt); 289289422Smav VERIFY(spa->spa_cksum_tmpls[checksum] != NULL); 290289422Smav } 291289422Smav mutex_exit(&spa->spa_cksum_tmpls_lock); 292289422Smav} 293289422Smav 294289422Smav/* 295168404Spjd * Generate the checksum. 296168404Spjd */ 297168404Spjdvoid 298185029Spjdzio_checksum_compute(zio_t *zio, enum zio_checksum checksum, 299321610Smav abd_t *abd, uint64_t size) 300168404Spjd{ 301185029Spjd blkptr_t *bp = zio->io_bp; 302185029Spjd uint64_t offset = zio->io_offset; 303168404Spjd zio_checksum_info_t *ci = &zio_checksum_table[checksum]; 304219089Spjd zio_cksum_t cksum; 305289422Smav spa_t *spa = zio->io_spa; 306168404Spjd 307185029Spjd ASSERT((uint_t)checksum < ZIO_CHECKSUM_FUNCTIONS); 308168404Spjd ASSERT(ci->ci_func[0] != NULL); 309168404Spjd 310289422Smav zio_checksum_template_init(checksum, spa); 311289422Smav 312289422Smav if (ci->ci_flags & ZCHECKSUM_FLAG_EMBEDDED) { 313219089Spjd zio_eck_t *eck; 314321610Smav void *data = abd_to_buf(abd); 315219089Spjd 316219089Spjd if (checksum == ZIO_CHECKSUM_ZILOG2) { 317219089Spjd zil_chain_t *zilc = data; 318219089Spjd 319219089Spjd size = P2ROUNDUP_TYPED(zilc->zc_nused, ZIL_MIN_BLKSZ, 320219089Spjd uint64_t); 321219089Spjd eck = &zilc->zc_eck; 322219089Spjd } else { 323219089Spjd eck = (zio_eck_t *)((char *)data + size) - 1; 324219089Spjd } 325185029Spjd if (checksum == ZIO_CHECKSUM_GANG_HEADER) 326219089Spjd zio_checksum_gang_verifier(&eck->zec_cksum, bp); 327185029Spjd else if (checksum == ZIO_CHECKSUM_LABEL) 328219089Spjd zio_checksum_label_verifier(&eck->zec_cksum, offset); 329185029Spjd else 330219089Spjd bp->blk_cksum = eck->zec_cksum; 331219089Spjd eck->zec_magic = ZEC_MAGIC; 332321610Smav ci->ci_func[0](abd, size, spa->spa_cksum_tmpls[checksum], 333289422Smav &cksum); 334219089Spjd eck->zec_cksum = cksum; 335168404Spjd } else { 336321610Smav ci->ci_func[0](abd, size, spa->spa_cksum_tmpls[checksum], 337289422Smav &bp->blk_cksum); 338168404Spjd } 339168404Spjd} 340168404Spjd 341168404Spjdint 342307265Smavzio_checksum_error_impl(spa_t *spa, blkptr_t *bp, enum zio_checksum checksum, 343321610Smav abd_t *abd, uint64_t size, uint64_t offset, zio_bad_cksum_t *info) 344168404Spjd{ 345307265Smav zio_checksum_info_t *ci = &zio_checksum_table[checksum]; 346307265Smav zio_cksum_t actual_cksum, expected_cksum; 347185029Spjd int byteswap; 348168404Spjd 349168404Spjd if (checksum >= ZIO_CHECKSUM_FUNCTIONS || ci->ci_func[0] == NULL) 350249195Smm return (SET_ERROR(EINVAL)); 351168404Spjd 352289422Smav zio_checksum_template_init(checksum, spa); 353289422Smav 354289422Smav if (ci->ci_flags & ZCHECKSUM_FLAG_EMBEDDED) { 355219089Spjd zio_eck_t *eck; 356307265Smav zio_cksum_t verifier; 357321610Smav uint64_t data_size = size; 358321610Smav void *data = abd_borrow_buf_copy(abd, data_size); 359219089Spjd 360219089Spjd if (checksum == ZIO_CHECKSUM_ZILOG2) { 361219089Spjd zil_chain_t *zilc = data; 362219089Spjd uint64_t nused; 363219089Spjd 364219089Spjd eck = &zilc->zc_eck; 365321610Smav if (eck->zec_magic == ZEC_MAGIC) { 366219089Spjd nused = zilc->zc_nused; 367321610Smav } else if (eck->zec_magic == BSWAP_64(ZEC_MAGIC)) { 368219089Spjd nused = BSWAP_64(zilc->zc_nused); 369321610Smav } else { 370321610Smav abd_return_buf(abd, data, data_size); 371249195Smm return (SET_ERROR(ECKSUM)); 372321610Smav } 373219089Spjd 374321610Smav if (nused > data_size) { 375321610Smav abd_return_buf(abd, data, data_size); 376249195Smm return (SET_ERROR(ECKSUM)); 377321610Smav } 378219089Spjd 379219089Spjd size = P2ROUNDUP_TYPED(nused, ZIL_MIN_BLKSZ, uint64_t); 380219089Spjd } else { 381321610Smav eck = (zio_eck_t *)((char *)data + data_size) - 1; 382219089Spjd } 383219089Spjd 384168404Spjd if (checksum == ZIO_CHECKSUM_GANG_HEADER) 385185029Spjd zio_checksum_gang_verifier(&verifier, bp); 386185029Spjd else if (checksum == ZIO_CHECKSUM_LABEL) 387185029Spjd zio_checksum_label_verifier(&verifier, offset); 388185029Spjd else 389185029Spjd verifier = bp->blk_cksum; 390168404Spjd 391219089Spjd byteswap = (eck->zec_magic == BSWAP_64(ZEC_MAGIC)); 392185029Spjd 393185029Spjd if (byteswap) 394185029Spjd byteswap_uint64_array(&verifier, sizeof (zio_cksum_t)); 395185029Spjd 396321610Smav size_t eck_offset = (size_t)(&eck->zec_cksum) - (size_t)data; 397219089Spjd expected_cksum = eck->zec_cksum; 398219089Spjd eck->zec_cksum = verifier; 399321610Smav abd_return_buf_copy(abd, data, data_size); 400321610Smav 401321610Smav ci->ci_func[byteswap](abd, size, 402289422Smav spa->spa_cksum_tmpls[checksum], &actual_cksum); 403321610Smav abd_copy_from_buf_off(abd, &expected_cksum, 404321610Smav eck_offset, sizeof (zio_cksum_t)); 405185029Spjd 406307265Smav if (byteswap) { 407168404Spjd byteswap_uint64_array(&expected_cksum, 408168404Spjd sizeof (zio_cksum_t)); 409307265Smav } 410168404Spjd } else { 411185029Spjd byteswap = BP_SHOULD_BYTESWAP(bp); 412185029Spjd expected_cksum = bp->blk_cksum; 413321610Smav ci->ci_func[byteswap](abd, size, 414289422Smav spa->spa_cksum_tmpls[checksum], &actual_cksum); 415168404Spjd } 416168404Spjd 417307265Smav if (info != NULL) { 418307265Smav info->zbc_expected = expected_cksum; 419307265Smav info->zbc_actual = actual_cksum; 420307265Smav info->zbc_checksum_name = ci->ci_name; 421307265Smav info->zbc_byteswapped = byteswap; 422307265Smav info->zbc_injected = 0; 423307265Smav info->zbc_has_cksum = 1; 424307265Smav } 425219089Spjd 426185029Spjd if (!ZIO_CHECKSUM_EQUAL(actual_cksum, expected_cksum)) 427249195Smm return (SET_ERROR(ECKSUM)); 428168404Spjd 429307265Smav return (0); 430307265Smav} 431307265Smav 432307265Smavint 433307265Smavzio_checksum_error(zio_t *zio, zio_bad_cksum_t *info) 434307265Smav{ 435307265Smav blkptr_t *bp = zio->io_bp; 436307265Smav uint_t checksum = (bp == NULL ? zio->io_prop.zp_checksum : 437307265Smav (BP_IS_GANG(bp) ? ZIO_CHECKSUM_GANG_HEADER : BP_GET_CHECKSUM(bp))); 438307265Smav int error; 439307265Smav uint64_t size = (bp == NULL ? zio->io_size : 440307265Smav (BP_IS_GANG(bp) ? SPA_GANGBLOCKSIZE : BP_GET_PSIZE(bp))); 441307265Smav uint64_t offset = zio->io_offset; 442321610Smav abd_t *data = zio->io_abd; 443307265Smav spa_t *spa = zio->io_spa; 444307265Smav 445307265Smav error = zio_checksum_error_impl(spa, bp, checksum, data, size, 446307265Smav offset, info); 447168404Spjd 448321533Smav if (zio_injection_enabled && error == 0 && zio->io_error == 0) { 449321533Smav error = zio_handle_fault_injection(zio, ECKSUM); 450321533Smav if (error != 0) 451321533Smav info->zbc_injected = 1; 452219089Spjd } 453321533Smav 454307265Smav return (error); 455168404Spjd} 456289422Smav 457289422Smav/* 458289422Smav * Called by a spa_t that's about to be deallocated. This steps through 459289422Smav * all of the checksum context templates and deallocates any that were 460289422Smav * initialized using the algorithm-specific template init function. 461289422Smav */ 462289422Smavvoid 463289422Smavzio_checksum_templates_free(spa_t *spa) 464289422Smav{ 465289422Smav for (enum zio_checksum checksum = 0; 466289422Smav checksum < ZIO_CHECKSUM_FUNCTIONS; checksum++) { 467289422Smav if (spa->spa_cksum_tmpls[checksum] != NULL) { 468289422Smav zio_checksum_info_t *ci = &zio_checksum_table[checksum]; 469289422Smav 470289422Smav VERIFY(ci->ci_tmpl_free != NULL); 471289422Smav ci->ci_tmpl_free(spa->spa_cksum_tmpls[checksum]); 472289422Smav spa->spa_cksum_tmpls[checksum] = NULL; 473289422Smav } 474289422Smav } 475289422Smav} 476