From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by dpdk.org (Postfix) with ESMTP id 852441B68B for ; Sun, 8 Apr 2018 14:58:17 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 08 Apr 2018 05:58:16 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.48,423,1517904000"; d="scan'208";a="48992522" Received: from silpixa00399464.ir.intel.com (HELO silpixa00399464.ger.corp.intel.com) ([10.237.222.157]) by orsmga002.jf.intel.com with ESMTP; 08 Apr 2018 05:58:14 -0700 From: Pablo de Lara To: dev@dpdk.org Cc: fiona.trahe@intel.com, shally.verma@cavium.com, ahmed.mansour@nxp.com, Ashish.Gupta@cavium.com, Pablo de Lara , Shally Verma , Ashish Gupta Date: Sun, 8 Apr 2018 13:58:11 +0100 Message-Id: <20180408125821.20330-4-pablo.de.lara.guarch@intel.com> X-Mailer: git-send-email 2.14.3 In-Reply-To: <20180408125821.20330-1-pablo.de.lara.guarch@intel.com> References: <20180406180512.40154-1-pablo.de.lara.guarch@intel.com> <20180408125821.20330-1-pablo.de.lara.guarch@intel.com> Subject: [dpdk-dev] [PATCH v4 03/13] compressdev: add compression specific data X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 08 Apr 2018 12:58:18 -0000 From: Fiona Trahe Added structures and enums specific to compression, including the compression operation structure and the different supported algorithms, checksums and compression levels. Signed-off-by: Fiona Trahe Signed-off-by: Pablo de Lara Signed-off-by: Shally Verma Signed-off-by: Ashish Gupta --- lib/librte_compressdev/Makefile | 1 + lib/librte_compressdev/meson.build | 3 +- lib/librte_compressdev/rte_comp.h | 312 +++++++++++++++++++++++++++++++++++++ 3 files changed, 315 insertions(+), 1 deletion(-) create mode 100644 lib/librte_compressdev/rte_comp.h diff --git a/lib/librte_compressdev/Makefile b/lib/librte_compressdev/Makefile index 5f67ab817..6f1546afd 100644 --- a/lib/librte_compressdev/Makefile +++ b/lib/librte_compressdev/Makefile @@ -19,6 +19,7 @@ LDLIBS += -lrte_eal -lrte_mempool -lrte_kvargs SRCS-y += rte_compressdev.c rte_compressdev_pmd.c # export include files +SYMLINK-y-include += rte_comp.h SYMLINK-y-include += rte_compressdev.h SYMLINK-y-include += rte_compressdev_pmd.h diff --git a/lib/librte_compressdev/meson.build b/lib/librte_compressdev/meson.build index fc5eaf009..a72d4cea5 100644 --- a/lib/librte_compressdev/meson.build +++ b/lib/librte_compressdev/meson.build @@ -4,5 +4,6 @@ allow_experimental_apis = true sources = files('rte_compressdev.c', 'rte_compressdev_pmd.c') headers = files('rte_compressdev.h', - 'rte_compressdev_pmd.h') + 'rte_compressdev_pmd.h', + 'rte_comp.h') deps += ['kvargs', 'mbuf'] diff --git a/lib/librte_compressdev/rte_comp.h b/lib/librte_compressdev/rte_comp.h new file mode 100644 index 000000000..cf0f3c999 --- /dev/null +++ b/lib/librte_compressdev/rte_comp.h @@ -0,0 +1,312 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2017-2018 Intel Corporation + */ + +#ifndef _RTE_COMP_H_ +#define _RTE_COMP_H_ + +/** + * @file rte_comp.h + * + * RTE definitions for Data Compression Service + * + */ + +#ifdef __cplusplus +extern "C" { +#endif + +#include +#include + +/** Status of comp operation */ +enum rte_comp_op_status { + RTE_COMP_OP_STATUS_SUCCESS = 0, + /**< Operation completed successfully */ + RTE_COMP_OP_STATUS_NOT_PROCESSED, + /**< Operation has not yet been processed by the device */ + RTE_COMP_OP_STATUS_INVALID_ARGS, + /**< Operation failed due to invalid arguments in request */ + RTE_COMP_OP_STATUS_ERROR, + /**< Error handling operation */ + RTE_COMP_OP_STATUS_INVALID_STATE, + /**< Operation is invoked in invalid state */ + RTE_COMP_OP_STATUS_OUT_OF_SPACE, + /**< Output buffer ran out of space before operation completed */ +}; + +/** Compression Algorithms */ +enum rte_comp_algorithm { + RTE_COMP_ALGO_UNSPECIFIED = 0, + /** No Compression algorithm */ + RTE_COMP_ALGO_NULL, + /**< No compression. + * Pass-through, data is copied unchanged from source buffer to + * destination buffer. + */ + RTE_COMP_ALGO_DEFLATE, + /**< DEFLATE compression algorithm + * https://tools.ietf.org/html/rfc1951 + */ + RTE_COMP_ALGO_LZS, + /**< LZS compression algorithm + * https://tools.ietf.org/html/rfc2395 + */ + RTE_COMP_ALGO_LIST_END +}; + +/**< Compression Level. + * The number is interpreted by each PMD differently. However, lower numbers + * give fastest compression, at the expense of compression ratio while + * higher numbers may give better compression ratios but are likely slower. + */ +#define RTE_COMP_LEVEL_PMD_DEFAULT (-1) +/** Use PMD Default */ +#define RTE_COMP_LEVEL_NONE (0) +/** Output uncompressed blocks if supported by the specified algorithm */ +#define RTE_COMP_LEVEL_MIN (1) +/** Use minimum compression level supported by the PMD */ +#define RTE_COMP_LEVEL_MAX (9) +/** Use maximum compression level supported by the PMD */ + +/** Compression checksum types */ +enum rte_comp_checksum_type { + RTE_COMP_CHECKSUM_NONE, + /**< No checksum generated */ + RTE_COMP_CHECKSUM_CRC32, + /**< Generates a CRC32 checksum, as used by gzip */ + RTE_COMP_CHECKSUM_ADLER32, + /**< Generates an Adler-32 checksum, as used by zlib */ + RTE_COMP_CHECKSUM_CRC32_ADLER32, + /**< Generates both Adler-32 and CRC32 checksums, concatenated. + * CRC32 is in the lower 32bits, Adler-32 in the upper 32 bits. + */ +}; + + +/** Compression Huffman Type - used by DEFLATE algorithm */ +enum rte_comp_huffman { + RTE_COMP_HUFFMAN_DEFAULT, + /**< PMD may choose which Huffman codes to use */ + RTE_COMP_HUFFMAN_FIXED, + /**< Use Fixed Huffman codes */ + RTE_COMP_HUFFMAN_DYNAMIC, + /**< Use Dynamic Huffman codes */ +}; + +enum rte_comp_flush_flag { + RTE_COMP_FLUSH_NONE, + /**< Data is not flushed. Output may remain in the compressor and be + * processed during a following op. It may not be possible to decompress + * output until a later op with some other flush flag has been sent. + */ + RTE_COMP_FLUSH_SYNC, + /**< All data should be flushed to output buffer. Output data can be + * decompressed. However state and history is not cleared, so future + * operations may use history from this operation. + */ + RTE_COMP_FLUSH_FULL, + /**< All data should be flushed to output buffer. Output data can be + * decompressed. State and history data is cleared, so future + * ops will be independent of ops processed before this. + */ + RTE_COMP_FLUSH_FINAL + /**< Same as RTE_COMP_FLUSH_FULL but if op.algo is RTE_COMP_ALGO_DEFLATE + * then bfinal bit is set in the last block. + */ +}; + +/** Compression transform types */ +enum rte_comp_xform_type { + RTE_COMP_COMPRESS, + /**< Compression service - compress */ + RTE_COMP_DECOMPRESS, + /**< Compression service - decompress */ +}; + +enum rte_comp_op_type { + RTE_COMP_OP_STATELESS, + /**< All data to be processed is submitted in the op, no state or + * history from previous ops is used and none will be stored for future + * ops. Flush flag must be set to either FLUSH_FULL or FLUSH_FINAL. + */ + RTE_COMP_OP_STATEFUL + /**< There may be more data to be processed after this op, it's part of + * a stream of data. State and history from previous ops can be used + * and resulting state and history can be stored for future ops, + * depending on flush flag. + */ +}; + + +/** Parameters specific to the deflate algorithm */ +struct rte_comp_deflate_params { + enum rte_comp_huffman huffman; + /**< Compression huffman encoding type */ +}; + +/** Setup Data for compression */ +struct rte_comp_compress_xform { + enum rte_comp_algorithm algo; + /**< Algorithm to use for compress operation */ + union { + struct rte_comp_deflate_params deflate; + /**< Parameters specific to the deflate algorithm */ + }; /**< Algorithm specific parameters */ + int level; + /**< Compression level */ + uint8_t window_size; + /**< Base two log value of sliding window to be used. If window size + * can't be supported by the PMD then it may fall back to a smaller + * size. This is likely to result in a worse compression ratio. + */ + enum rte_comp_checksum_type chksum; + /**< Type of checksum to generate on the uncompressed data */ +}; + +/** + * Setup Data for decompression. + */ +struct rte_comp_decompress_xform { + enum rte_comp_algorithm algo; + /**< Algorithm to use for decompression */ + enum rte_comp_checksum_type chksum; + /**< Type of checksum to generate on the decompressed data */ + uint8_t window_size; + /**< Base two log value of sliding window which was used to generate + * compressed data. If window size can't be supported by the PMD then + * setup of stream or private_xform should fail. + */ +}; + +/** + * Compression transform structure. + * + * This is used to specify the compression transforms required. + * Each transform structure can hold a single transform, the type field is + * used to specify which transform is contained within the union. + * There are no chain cases currently supported, just single xforms of + * - compress-only + * - decompress-only + * + */ +struct rte_comp_xform { + struct rte_comp_xform *next; + /**< next xform in chain */ + enum rte_comp_xform_type type; + /**< xform type */ + union { + struct rte_comp_compress_xform compress; + /**< xform for compress operation */ + struct rte_comp_decompress_xform decompress; + /**< decompress xform */ + }; +}; + +/** + * Compression Operation. + * + * This structure contains data relating to performing a compression + * operation on the referenced mbuf data buffers. + * + * Comp operations are enqueued and dequeued in comp PMDs using the + * rte_compressdev_enqueue_burst() / rte_compressdev_dequeue_burst() APIs + */ +struct rte_comp_op { + enum rte_comp_op_type op_type; + union { + void *private_xform; + /**< Stateless private PMD data derived from an rte_comp_xform. + * A handle returned by rte_compressdev_private_xform_create() + * must be attached to operations of op_type RTE_COMP_STATELESS. + */ + void *stream; + /**< Private PMD data derived initially from an rte_comp_xform, + * which holds state and history data and evolves as operations + * are processed. rte_compressdev_stream_create() must be called + * on a device for all STATEFUL data streams and the resulting + * stream attached to the one or more operations associated + * with the data stream. + * All operations in a stream must be sent to the same device. + */ + }; + + struct rte_mempool *mempool; + /**< Pool from which operation is allocated */ + rte_iova_t iova_addr; + /**< IOVA address of this operation */ + struct rte_mbuf *m_src; + /**< source mbuf + * The total size of the input buffer(s) can be retrieved using + * rte_pktmbuf_data_len(m_src) + */ + struct rte_mbuf *m_dst; + /**< destination mbuf + * The total size of the output buffer(s) can be retrieved using + * rte_pktmbuf_data_len(m_dst) + */ + + struct { + uint32_t offset; + /**< Starting point for compression or decompression, + * specified as number of bytes from start of packet in + * source buffer. + * Starting point for checksum generation in compress direction. + */ + uint32_t length; + /**< The length, in bytes, of the data in source buffer + * to be compressed or decompressed. + * Also the length of the data over which the checksum + * should be generated in compress direction + */ + } src; + struct { + uint32_t offset; + /**< Starting point for writing output data, specified as + * number of bytes from start of packet in dest + * buffer. Starting point for checksum generation in + * decompress direction. + */ + } dst; + enum rte_comp_flush_flag flush_flag; + /**< Defines flush characteristics for the output data. + * Only applicable in compress direction + */ + uint64_t input_chksum; + /**< An input checksum can be provided to generate a + * cumulative checksum across sequential blocks in a STATELESS stream. + * Checksum type is as specified in xform chksum_type + */ + uint64_t output_chksum; + /**< If a checksum is generated it will be written in here. + * Checksum type is as specified in xform chksum_type. + */ + uint32_t consumed; + /**< The number of bytes from the source buffer + * which were compressed/decompressed. + */ + uint32_t produced; + /**< The number of bytes written to the destination buffer + * which were compressed/decompressed. + */ + uint64_t debug_status; + /**< + * Status of the operation is returned in the status param. + * This field allows the PMD to pass back extra + * pmd-specific debug information. Value is not defined on the API. + */ + uint8_t status; + /**< + * Operation status - use values from enum rte_comp_status. + * This is reset to + * RTE_COMP_OP_STATUS_NOT_PROCESSED on allocation from mempool and + * will be set to RTE_COMP_OP_STATUS_SUCCESS after operation + * is successfully processed by a PMD + */ +} __rte_cache_aligned; + +#ifdef __cplusplus +} +#endif + +#endif /* _RTE_COMP_H_ */ -- 2.14.3