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 size_t 51 gzip_compress(void *s_start, void *d_start, size_t s_len, size_t d_len, int n) 52 { 53 int ret; 54 zlen_t dstlen = d_len; 55 56 ASSERT(d_len <= s_len); 57 58 /* check if hardware accelerator can be used */ 59 if (qat_dc_use_accel(s_len)) { 60 ret = qat_compress(QAT_COMPRESS, s_start, s_len, d_start, 61 d_len, &dstlen); 62 if (ret == CPA_STATUS_SUCCESS) { 63 return ((size_t)dstlen); 64 } else if (ret == CPA_STATUS_INCOMPRESSIBLE) { 65 if (d_len != s_len) 66 return (s_len); 67 68 memcpy(d_start, s_start, s_len); 69 return (s_len); 70 } 71 /* if hardware compression fails, do it again with software */ 72 } 73 74 if (compress_func(d_start, &dstlen, s_start, s_len, n) != Z_OK) { 75 if (d_len != s_len) 76 return (s_len); 77 78 memcpy(d_start, s_start, s_len); 79 return (s_len); 80 } 81 82 return ((size_t)dstlen); 83 } 84 85 int 86 gzip_decompress(void *s_start, void *d_start, size_t s_len, size_t d_len, int n) 87 { 88 (void) n; 89 zlen_t dstlen = d_len; 90 91 ASSERT(d_len >= s_len); 92 93 /* check if hardware accelerator can be used */ 94 if (qat_dc_use_accel(d_len)) { 95 if (qat_compress(QAT_DECOMPRESS, s_start, s_len, 96 d_start, d_len, &dstlen) == CPA_STATUS_SUCCESS) 97 return (0); 98 /* if hardware de-compress fail, do it again with software */ 99 } 100 101 if (uncompress_func(d_start, &dstlen, s_start, s_len) != Z_OK) 102 return (-1); 103 104 return (0); 105 } 106