1 // SPDX-License-Identifier: CDDL-1.0
2 /*
3 * CDDL HEADER START
4 *
5 * The contents of this file are subject to the terms of the
6 * Common Development and Distribution License (the "License").
7 * You may not use this file except in compliance with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or https://opensource.org/licenses/CDDL-1.0.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22
23 /*
24 * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
25 * Use is subject to license terms.
26 */
27
28
29
30 #include <sys/debug.h>
31 #include <sys/types.h>
32 #include <sys/qat.h>
33 #include <sys/zio_compress.h>
34
35 #ifdef _KERNEL
36
37 #include <sys/zmod.h>
38 typedef size_t zlen_t;
39 #define compress_func z_compress_level
40 #define uncompress_func z_uncompress
41
42 #else /* _KERNEL */
43
44 #include <zlib.h>
45 typedef uLongf zlen_t;
46 #define compress_func compress2
47 #define uncompress_func uncompress
48
49 #endif
50
51 static size_t
zfs_gzip_compress_buf(void * s_start,void * d_start,size_t s_len,size_t d_len,int n)52 zfs_gzip_compress_buf(void *s_start, void *d_start, size_t s_len,
53 size_t d_len, int n)
54 {
55 int ret;
56 zlen_t dstlen = d_len;
57
58 ASSERT(d_len <= s_len);
59
60 /* check if hardware accelerator can be used */
61 if (qat_dc_use_accel(s_len)) {
62 ret = qat_compress(QAT_COMPRESS, s_start, s_len, d_start,
63 d_len, &dstlen);
64 if (ret == CPA_STATUS_SUCCESS) {
65 return ((size_t)dstlen);
66 } else if (ret == CPA_STATUS_INCOMPRESSIBLE) {
67 if (d_len != s_len)
68 return (s_len);
69
70 memcpy(d_start, s_start, s_len);
71 return (s_len);
72 }
73 /* if hardware compression fails, do it again with software */
74 }
75
76 if (compress_func(d_start, &dstlen, s_start, s_len, n) != Z_OK) {
77 if (d_len != s_len)
78 return (s_len);
79
80 memcpy(d_start, s_start, s_len);
81 return (s_len);
82 }
83
84 return ((size_t)dstlen);
85 }
86
87 static int
zfs_gzip_decompress_buf(void * s_start,void * d_start,size_t s_len,size_t d_len,int n)88 zfs_gzip_decompress_buf(void *s_start, void *d_start, size_t s_len,
89 size_t d_len, int n)
90 {
91 (void) n;
92 zlen_t dstlen = d_len;
93
94 ASSERT(d_len >= s_len);
95
96 /* check if hardware accelerator can be used */
97 if (qat_dc_use_accel(d_len)) {
98 if (qat_compress(QAT_DECOMPRESS, s_start, s_len,
99 d_start, d_len, &dstlen) == CPA_STATUS_SUCCESS)
100 return (0);
101 /* if hardware de-compress fail, do it again with software */
102 }
103
104 if (uncompress_func(d_start, &dstlen, s_start, s_len) != Z_OK)
105 return (-1);
106
107 return (0);
108 }
109
110 ZFS_COMPRESS_WRAP_DECL(zfs_gzip_compress)
111 ZFS_DECOMPRESS_WRAP_DECL(zfs_gzip_decompress)
112