| /* |
| * CDDL HEADER START |
| * |
| * The contents of this file are subject to the terms of the |
| * Common Development and Distribution License (the "License"). |
| * You may not use this file except in compliance with the License. |
| * |
| * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE |
| * or http://www.opensolaris.org/os/licensing. |
| * See the License for the specific language governing permissions |
| * and limitations under the License. |
| * |
| * When distributing Covered Code, include this CDDL HEADER in each |
| * file and include the License file at usr/src/OPENSOLARIS.LICENSE. |
| * If applicable, add the following below this CDDL HEADER, with the |
| * fields enclosed by brackets "[]" replaced with your own identifying |
| * information: Portions Copyright [yyyy] [name of copyright owner] |
| * |
| * CDDL HEADER END |
| */ |
| |
| /* |
| * Copyright 2007 Sun Microsystems, Inc. All rights reserved. |
| * Use is subject to license terms. |
| */ |
| |
| |
| |
| #include <sys/debug.h> |
| #include <sys/types.h> |
| #include <sys/strings.h> |
| #include <sys/qat.h> |
| #include <sys/zio_compress.h> |
| |
| #ifdef _KERNEL |
| |
| #include <sys/zmod.h> |
| typedef size_t zlen_t; |
| #define compress_func z_compress_level |
| #define uncompress_func z_uncompress |
| |
| #else /* _KERNEL */ |
| |
| #include <zlib.h> |
| typedef uLongf zlen_t; |
| #define compress_func compress2 |
| #define uncompress_func uncompress |
| |
| #endif |
| |
| size_t |
| gzip_compress(void *s_start, void *d_start, size_t s_len, size_t d_len, int n) |
| { |
| int ret; |
| zlen_t dstlen = d_len; |
| |
| ASSERT(d_len <= s_len); |
| |
| /* check if hardware accelerator can be used */ |
| if (qat_dc_use_accel(s_len)) { |
| ret = qat_compress(QAT_COMPRESS, s_start, s_len, d_start, |
| d_len, &dstlen); |
| if (ret == CPA_STATUS_SUCCESS) { |
| return ((size_t)dstlen); |
| } else if (ret == CPA_STATUS_INCOMPRESSIBLE) { |
| if (d_len != s_len) |
| return (s_len); |
| |
| bcopy(s_start, d_start, s_len); |
| return (s_len); |
| } |
| /* if hardware compression fails, do it again with software */ |
| } |
| |
| if (compress_func(d_start, &dstlen, s_start, s_len, n) != Z_OK) { |
| if (d_len != s_len) |
| return (s_len); |
| |
| bcopy(s_start, d_start, s_len); |
| return (s_len); |
| } |
| |
| return ((size_t)dstlen); |
| } |
| |
| int |
| gzip_decompress(void *s_start, void *d_start, size_t s_len, size_t d_len, int n) |
| { |
| (void) n; |
| zlen_t dstlen = d_len; |
| |
| ASSERT(d_len >= s_len); |
| |
| /* check if hardware accelerator can be used */ |
| if (qat_dc_use_accel(d_len)) { |
| if (qat_compress(QAT_DECOMPRESS, s_start, s_len, |
| d_start, d_len, &dstlen) == CPA_STATUS_SUCCESS) |
| return (0); |
| /* if hardware de-compress fail, do it again with software */ |
| } |
| |
| if (uncompress_func(d_start, &dstlen, s_start, s_len) != Z_OK) |
| return (-1); |
| |
| return (0); |
| } |