3874220932
This patch enables acceleration of SHA256 checksums using Intel Quick Assist Technology. This patch also fixes up and refactors some of the code from QAT encryption to make the behavior consistent. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Chengfeix Zhu <chengfeix.zhu@intel.com> Signed-off-by: Weigang Li <weigang.li@intel.com> Signed-off-by: Tom Caputi <tcaputi@datto.com> Closes #7295
105 lines
2.6 KiB
C
105 lines
2.6 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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#if defined(_KERNEL) && defined(HAVE_QAT)
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#include <sys/zfs_context.h>
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#include "qat.h"
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qat_stats_t qat_stats = {
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{ "comp_requests", KSTAT_DATA_UINT64 },
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{ "comp_total_in_bytes", KSTAT_DATA_UINT64 },
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{ "comp_total_out_bytes", KSTAT_DATA_UINT64 },
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{ "decomp_requests", KSTAT_DATA_UINT64 },
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{ "decomp_total_in_bytes", KSTAT_DATA_UINT64 },
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{ "decomp_total_out_bytes", KSTAT_DATA_UINT64 },
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{ "dc_fails", KSTAT_DATA_UINT64 },
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{ "encrypt_requests", KSTAT_DATA_UINT64 },
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{ "encrypt_total_in_bytes", KSTAT_DATA_UINT64 },
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{ "encrypt_total_out_bytes", KSTAT_DATA_UINT64 },
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{ "decrypt_requests", KSTAT_DATA_UINT64 },
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{ "decrypt_total_in_bytes", KSTAT_DATA_UINT64 },
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{ "decrypt_total_out_bytes", KSTAT_DATA_UINT64 },
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{ "crypt_fails", KSTAT_DATA_UINT64 },
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{ "cksum_requests", KSTAT_DATA_UINT64 },
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{ "cksum_total_in_bytes", KSTAT_DATA_UINT64 },
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{ "cksum_fails", KSTAT_DATA_UINT64 },
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};
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static kstat_t *qat_ksp = NULL;
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CpaStatus
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qat_mem_alloc_contig(void **pp_mem_addr, Cpa32U size_bytes)
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{
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*pp_mem_addr = kmalloc(size_bytes, GFP_KERNEL);
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if (*pp_mem_addr == NULL)
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return (CPA_STATUS_RESOURCE);
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return (CPA_STATUS_SUCCESS);
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}
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void
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qat_mem_free_contig(void **pp_mem_addr)
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{
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if (*pp_mem_addr != NULL) {
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kfree(*pp_mem_addr);
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*pp_mem_addr = NULL;
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}
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}
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int
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qat_init(void)
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{
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int ret;
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ret = qat_dc_init();
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if (ret != 0)
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return (ret);
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ret = qat_crypt_init();
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if (ret != 0) {
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qat_dc_fini();
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return (ret);
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}
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qat_ksp = kstat_create("zfs", 0, "qat", "misc",
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KSTAT_TYPE_NAMED, sizeof (qat_stats) / sizeof (kstat_named_t),
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KSTAT_FLAG_VIRTUAL);
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if (qat_ksp != NULL) {
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qat_ksp->ks_data = &qat_stats;
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kstat_install(qat_ksp);
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}
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return (0);
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}
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void
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qat_fini(void)
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{
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if (qat_ksp != NULL) {
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kstat_delete(qat_ksp);
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qat_ksp = NULL;
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}
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qat_crypt_fini();
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qat_dc_fini();
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}
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#endif
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