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 9 * or https://opensource.org/licenses/CDDL-1.0. 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 */ 21 22 /* 23 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 28 29 #include <sys/debug.h> 30 #include <sys/types.h> 31 #include <sys/qat.h> 32 #include <sys/zio_compress.h> 33 34 #ifdef _KERNEL 35 36 #include <sys/zmod.h> 37 typedef size_t zlen_t; 38 #define compress_func z_compress_level 39 #define uncompress_func z_uncompress 40 41 #else /* _KERNEL */ 42 43 #include <zlib.h> 44 typedef uLongf zlen_t; 45 #define compress_func compress2 46 #define uncompress_func uncompress 47 48 #endif 49 50 static size_t 51 zfs_gzip_compress_buf(void *s_start, void *d_start, size_t s_len, 52 size_t d_len, int n) 53 { 54 int ret; 55 zlen_t dstlen = d_len; 56 57 ASSERT(d_len <= s_len); 58 59 /* check if hardware accelerator can be used */ 60 if (qat_dc_use_accel(s_len)) { 61 ret = qat_compress(QAT_COMPRESS, s_start, s_len, d_start, 62 d_len, &dstlen); 63 if (ret == CPA_STATUS_SUCCESS) { 64 return ((size_t)dstlen); 65 } else if (ret == CPA_STATUS_INCOMPRESSIBLE) { 66 if (d_len != s_len) 67 return (s_len); 68 69 memcpy(d_start, s_start, s_len); 70 return (s_len); 71 } 72 /* if hardware compression fails, do it again with software */ 73 } 74 75 if (compress_func(d_start, &dstlen, s_start, s_len, n) != Z_OK) { 76 if (d_len != s_len) 77 return (s_len); 78 79 memcpy(d_start, s_start, s_len); 80 return (s_len); 81 } 82 83 return ((size_t)dstlen); 84 } 85 86 static int 87 zfs_gzip_decompress_buf(void *s_start, void *d_start, size_t s_len, 88 size_t d_len, int n) 89 { 90 (void) n; 91 zlen_t dstlen = d_len; 92 93 ASSERT(d_len >= s_len); 94 95 /* check if hardware accelerator can be used */ 96 if (qat_dc_use_accel(d_len)) { 97 if (qat_compress(QAT_DECOMPRESS, s_start, s_len, 98 d_start, d_len, &dstlen) == CPA_STATUS_SUCCESS) 99 return (0); 100 /* if hardware de-compress fail, do it again with software */ 101 } 102 103 if (uncompress_func(d_start, &dstlen, s_start, s_len) != Z_OK) 104 return (-1); 105 106 return (0); 107 } 108 109 ZFS_COMPRESS_WRAP_DECL(zfs_gzip_compress) 110 ZFS_DECOMPRESS_WRAP_DECL(zfs_gzip_decompress) 111