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34dc7c2f BB |
1 | /* |
2 | * CDDL HEADER START | |
3 | * | |
4 | * The contents of this file are subject to the terms of the | |
5 | * Common Development and Distribution License (the "License"). | |
6 | * You may not use this file except in compliance with the License. | |
7 | * | |
8 | * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
1d3ba0bf | 9 | * or https://opensource.org/licenses/CDDL-1.0. |
34dc7c2f BB |
10 | * See the License for the specific language governing permissions |
11 | * and limitations under the License. | |
12 | * | |
13 | * When distributing Covered Code, include this CDDL HEADER in each | |
14 | * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
15 | * If applicable, add the following below this CDDL HEADER, with the | |
16 | * fields enclosed by brackets "[]" replaced with your own identifying | |
17 | * information: Portions Copyright [yyyy] [name of copyright owner] | |
18 | * | |
19 | * CDDL HEADER END | |
20 | */ | |
4c5fec01 | 21 | |
34dc7c2f | 22 | /* |
3c67d83a | 23 | * Copyright 2009 Sun Microsystems, Inc. All rights reserved. |
3c67d83a | 24 | * Copyright 2013 Saso Kiselkov. All rights reserved. |
a6255b7f | 25 | * Copyright (c) 2016 by Delphix. All rights reserved. |
3c67d83a | 26 | */ |
4c5fec01 | 27 | |
34dc7c2f | 28 | #include <sys/zfs_context.h> |
60356b1a | 29 | #include <sys/zio_checksum.h> |
3c67d83a | 30 | #include <sys/sha2.h> |
a6255b7f | 31 | #include <sys/abd.h> |
bced7e3a | 32 | #include <sys/qat.h> |
a6255b7f DQ |
33 | |
34 | static int | |
35 | sha_incremental(void *buf, size_t size, void *arg) | |
36 | { | |
37 | SHA2_CTX *ctx = arg; | |
38 | SHA2Update(ctx, buf, size); | |
39 | return (0); | |
40 | } | |
9c905c55 | 41 | |
3c67d83a | 42 | void |
4c5fec01 | 43 | abd_checksum_sha256(abd_t *abd, uint64_t size, |
3c67d83a | 44 | const void *ctx_template, zio_cksum_t *zcp) |
9c905c55 | 45 | { |
14e4e3cb | 46 | (void) ctx_template; |
38742209 | 47 | int ret; |
3c67d83a TH |
48 | SHA2_CTX ctx; |
49 | zio_cksum_t tmp; | |
50 | ||
38742209 TC |
51 | if (qat_checksum_use_accel(size)) { |
52 | uint8_t *buf = abd_borrow_buf_copy(abd, size); | |
53 | ret = qat_checksum(ZIO_CHECKSUM_SHA256, buf, size, &tmp); | |
54 | abd_return_buf(abd, buf, size); | |
55 | if (ret == CPA_STATUS_SUCCESS) | |
56 | goto bswap; | |
57 | ||
58 | /* If the hardware implementation fails fall back to software */ | |
59 | } | |
60 | ||
3c67d83a | 61 | SHA2Init(SHA256, &ctx); |
a6255b7f | 62 | (void) abd_iterate_func(abd, 0, size, sha_incremental, &ctx); |
3c67d83a TH |
63 | SHA2Final(&tmp, &ctx); |
64 | ||
38742209 | 65 | bswap: |
3c67d83a TH |
66 | /* |
67 | * A prior implementation of this function had a | |
68 | * private SHA256 implementation always wrote things out in | |
69 | * Big Endian and there wasn't a byteswap variant of it. | |
a6255b7f DQ |
70 | * To preserve on disk compatibility we need to force that |
71 | * behavior. | |
3c67d83a TH |
72 | */ |
73 | zcp->zc_word[0] = BE_64(tmp.zc_word[0]); | |
74 | zcp->zc_word[1] = BE_64(tmp.zc_word[1]); | |
75 | zcp->zc_word[2] = BE_64(tmp.zc_word[2]); | |
76 | zcp->zc_word[3] = BE_64(tmp.zc_word[3]); | |
9c905c55 | 77 | } |
34dc7c2f BB |
78 | |
79 | void | |
4c5fec01 | 80 | abd_checksum_sha512_native(abd_t *abd, uint64_t size, |
3c67d83a | 81 | const void *ctx_template, zio_cksum_t *zcp) |
34dc7c2f | 82 | { |
14e4e3cb | 83 | (void) ctx_template; |
3c67d83a | 84 | SHA2_CTX ctx; |
9c905c55 | 85 | |
3c67d83a | 86 | SHA2Init(SHA512_256, &ctx); |
a6255b7f | 87 | (void) abd_iterate_func(abd, 0, size, sha_incremental, &ctx); |
3c67d83a TH |
88 | SHA2Final(zcp, &ctx); |
89 | } | |
9c905c55 | 90 | |
3c67d83a | 91 | void |
4c5fec01 | 92 | abd_checksum_sha512_byteswap(abd_t *abd, uint64_t size, |
3c67d83a TH |
93 | const void *ctx_template, zio_cksum_t *zcp) |
94 | { | |
95 | zio_cksum_t tmp; | |
9c905c55 | 96 | |
4c5fec01 | 97 | abd_checksum_sha512_native(abd, size, ctx_template, &tmp); |
3c67d83a TH |
98 | zcp->zc_word[0] = BSWAP_64(tmp.zc_word[0]); |
99 | zcp->zc_word[1] = BSWAP_64(tmp.zc_word[1]); | |
100 | zcp->zc_word[2] = BSWAP_64(tmp.zc_word[2]); | |
101 | zcp->zc_word[3] = BSWAP_64(tmp.zc_word[3]); | |
34dc7c2f | 102 | } |