199 lines
5.9 KiB
C
199 lines
5.9 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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#ifndef _SYS_QAT_H
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#define _SYS_QAT_H
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typedef enum qat_compress_dir {
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QAT_DECOMPRESS = 0,
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QAT_COMPRESS = 1,
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} qat_compress_dir_t;
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typedef enum qat_encrypt_dir {
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QAT_DECRYPT = 0,
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QAT_ENCRYPT = 1,
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} qat_encrypt_dir_t;
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#if defined(_KERNEL) && defined(HAVE_QAT)
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#include <sys/zio.h>
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#include <sys/crypto/api.h>
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#include "cpa.h"
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#include "dc/cpa_dc.h"
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#include "lac/cpa_cy_sym.h"
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/*
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* The minimal and maximal buffer size which are not restricted
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* in the QAT hardware, but with the input buffer size between 4KB
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* and 128KB the hardware can provide the optimal performance.
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*/
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#define QAT_MIN_BUF_SIZE (4*1024)
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#define QAT_MAX_BUF_SIZE (128*1024)
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/*
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* Used for QAT kstat.
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*/
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typedef struct qat_stats {
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/*
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* Number of jobs submitted to QAT compression engine.
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*/
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kstat_named_t comp_requests;
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/*
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* Total bytes sent to QAT compression engine.
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*/
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kstat_named_t comp_total_in_bytes;
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/*
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* Total bytes output from QAT compression engine.
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*/
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kstat_named_t comp_total_out_bytes;
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/*
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* Number of jobs submitted to QAT de-compression engine.
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*/
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kstat_named_t decomp_requests;
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/*
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* Total bytes sent to QAT de-compression engine.
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*/
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kstat_named_t decomp_total_in_bytes;
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/*
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* Total bytes output from QAT de-compression engine.
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*/
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kstat_named_t decomp_total_out_bytes;
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/*
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* Number of fails in the QAT compression / decompression engine.
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* Note: when a QAT error happens, it doesn't necessarily indicate a
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* critical hardware issue. Sometimes it is because the output buffer
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* is not big enough. The compression job will be transferred to the
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* gzip software implementation so the functionality of ZFS is not
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* impacted.
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*/
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kstat_named_t dc_fails;
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/*
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* Number of jobs submitted to QAT encryption engine.
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*/
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kstat_named_t encrypt_requests;
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/*
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* Total bytes sent to QAT encryption engine.
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*/
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kstat_named_t encrypt_total_in_bytes;
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/*
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* Total bytes output from QAT encryption engine.
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*/
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kstat_named_t encrypt_total_out_bytes;
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/*
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* Number of jobs submitted to QAT decryption engine.
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*/
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kstat_named_t decrypt_requests;
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/*
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* Total bytes sent to QAT decryption engine.
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*/
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kstat_named_t decrypt_total_in_bytes;
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/*
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* Total bytes output from QAT decryption engine.
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*/
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kstat_named_t decrypt_total_out_bytes;
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/*
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* Number of fails in the QAT encryption / decryption engine.
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* Note: when a QAT error happens, it doesn't necessarily indicate a
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* critical hardware issue. The encryption job will be transferred
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* to the software implementation so the functionality of ZFS is
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* not impacted.
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*/
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kstat_named_t crypt_fails;
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/*
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* Number of jobs submitted to QAT checksum engine.
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*/
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kstat_named_t cksum_requests;
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/*
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* Total bytes sent to QAT checksum engine.
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*/
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kstat_named_t cksum_total_in_bytes;
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/*
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* Number of fails in the QAT checksum engine.
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* Note: when a QAT error happens, it doesn't necessarily indicate a
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* critical hardware issue. The checksum job will be transferred to the
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* software implementation so the functionality of ZFS is not impacted.
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*/
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kstat_named_t cksum_fails;
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} qat_stats_t;
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#define QAT_STAT_INCR(stat, val) \
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atomic_add_64(&qat_stats.stat.value.ui64, (val))
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#define QAT_STAT_BUMP(stat) \
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QAT_STAT_INCR(stat, 1)
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extern qat_stats_t qat_stats;
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extern int zfs_qat_compress_disable;
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extern int zfs_qat_checksum_disable;
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extern int zfs_qat_encrypt_disable;
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/* inlined for performance */
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static inline struct page *
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qat_mem_to_page(void *addr)
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{
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if (!is_vmalloc_addr(addr))
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return (virt_to_page(addr));
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return (vmalloc_to_page(addr));
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}
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CpaStatus qat_mem_alloc_contig(void **pp_mem_addr, Cpa32U size_bytes);
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void qat_mem_free_contig(void **pp_mem_addr);
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#define QAT_PHYS_CONTIG_ALLOC(pp_mem_addr, size_bytes) \
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qat_mem_alloc_contig((void *)(pp_mem_addr), (size_bytes))
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#define QAT_PHYS_CONTIG_FREE(p_mem_addr) \
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qat_mem_free_contig((void *)&(p_mem_addr))
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extern int qat_dc_init(void);
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extern void qat_dc_fini(void);
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extern int qat_cy_init(void);
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extern void qat_cy_fini(void);
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extern int qat_init(void);
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extern void qat_fini(void);
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/* fake CpaStatus used to indicate data was not compressible */
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#define CPA_STATUS_INCOMPRESSIBLE (-127)
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extern boolean_t qat_dc_use_accel(size_t s_len);
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extern boolean_t qat_crypt_use_accel(size_t s_len);
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extern boolean_t qat_checksum_use_accel(size_t s_len);
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extern int qat_compress(qat_compress_dir_t dir, char *src, int src_len,
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char *dst, int dst_len, size_t *c_len);
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extern int qat_crypt(qat_encrypt_dir_t dir, uint8_t *src_buf, uint8_t *dst_buf,
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uint8_t *aad_buf, uint32_t aad_len, uint8_t *iv_buf, uint8_t *digest_buf,
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crypto_key_t *key, uint64_t crypt, uint32_t enc_len);
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extern int qat_checksum(uint64_t cksum, uint8_t *buf, uint64_t size,
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zio_cksum_t *zcp);
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#else
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#define CPA_STATUS_SUCCESS 0
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#define CPA_STATUS_INCOMPRESSIBLE (-127)
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#define qat_init()
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#define qat_fini()
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#define qat_dc_use_accel(s_len) 0
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#define qat_crypt_use_accel(s_len) 0
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#define qat_checksum_use_accel(s_len) 0
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#define qat_compress(dir, s, sl, d, dl, cl) 0
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#define qat_crypt(dir, s, d, a, al, i, db, k, c, el) 0
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#define qat_checksum(c, buf, s, z) 0
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#endif
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#endif /* _SYS_QAT_H */
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