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 http://www.opensolaris.org/os/licensing. 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/strings.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 size_t 52 gzip_compress(void *s_start, void *d_start, size_t s_len, 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 bcopy(s_start, d_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 bcopy(s_start, d_start, s_len); 80 return (s_len); 81 } 82 83 return ((size_t)dstlen); 84 } 85 86 /*ARGSUSED*/ 87 int 88 gzip_decompress(void *s_start, void *d_start, size_t s_len, size_t d_len, int n) 89 { 90 zlen_t dstlen = d_len; 91 92 ASSERT(d_len >= s_len); 93 94 /* check if hardware accelerator can be used */ 95 if (qat_dc_use_accel(d_len)) { 96 if (qat_compress(QAT_DECOMPRESS, s_start, s_len, 97 d_start, d_len, &dstlen) == CPA_STATUS_SUCCESS) 98 return (0); 99 /* if hardware de-compress fail, do it again with software */ 100 } 101 102 if (uncompress_func(d_start, &dstlen, s_start, s_len) != Z_OK) 103 return (-1); 104 105 return (0); 106 } 107