\fBzfs_qat_disable\fR (int)
.ad
.RS 12n
-This tunable disables qat hardware acceleration for gzip compression.
-It is available only if qat acceleration is compiled in and qat driver
-is present.
+This tunable disables qat hardware acceleration for gzip compression and.
+AES-GCM encryption. It is available only if qat acceleration is compiled in
+and the qat driver is present.
.sp
Use \fB1\fR for yes and \fB0\fR for no (default).
.RE
$(MODULE)-objs += zvol.o
$(MODULE)-objs += dsl_destroy.o
$(MODULE)-objs += dsl_userhold.o
+$(MODULE)-objs += qat.o
$(MODULE)-objs += qat_compress.o
+$(MODULE)-objs += qat_crypt.o
# Suppress incorrect warnings from versions of objtool which are not
# aware of x86 EVEX prefix instructions used for AVX512.
#include <sys/debug.h>
#include <sys/types.h>
-#include "qat_compress.h"
+#include "qat.h"
#ifdef _KERNEL
ASSERT(d_len <= s_len);
/* check if hardware accelerator can be used */
- if (qat_use_accel(s_len)) {
+ if (qat_dc_use_accel(s_len)) {
if (qat_compress(QAT_COMPRESS, s_start,
s_len, d_start, d_len, &dstlen) == CPA_STATUS_SUCCESS)
return ((size_t)dstlen);
ASSERT(d_len >= s_len);
/* check if hardware accelerator can be used */
- if (qat_use_accel(d_len)) {
+ 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);
--- /dev/null
+/*
+ * 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
+ */
+
+#if defined(_KERNEL) && defined(HAVE_QAT)
+#include <sys/zfs_context.h>
+#include "qat.h"
+
+qat_stats_t qat_stats = {
+ { "comp_requests", KSTAT_DATA_UINT64 },
+ { "comp_total_in_bytes", KSTAT_DATA_UINT64 },
+ { "comp_total_out_bytes", KSTAT_DATA_UINT64 },
+ { "decomp_requests", KSTAT_DATA_UINT64 },
+ { "decomp_total_in_bytes", KSTAT_DATA_UINT64 },
+ { "decomp_total_out_bytes", KSTAT_DATA_UINT64 },
+ { "dc_fails", KSTAT_DATA_UINT64 },
+ { "encrypt_requests", KSTAT_DATA_UINT64 },
+ { "encrypt_total_in_bytes", KSTAT_DATA_UINT64 },
+ { "encrypt_total_out_bytes", KSTAT_DATA_UINT64 },
+ { "decrypt_requests", KSTAT_DATA_UINT64 },
+ { "decrypt_total_in_bytes", KSTAT_DATA_UINT64 },
+ { "decrypt_total_out_bytes", KSTAT_DATA_UINT64 },
+ { "crypt_fails", KSTAT_DATA_UINT64 },
+};
+
+static kstat_t *qat_ksp = NULL;
+int zfs_qat_disable = 0;
+
+CpaStatus
+qat_mem_alloc_contig(void **pp_mem_addr, Cpa32U size_bytes)
+{
+ *pp_mem_addr = kmalloc(size_bytes, GFP_KERNEL);
+ if (*pp_mem_addr == NULL)
+ return (CPA_STATUS_RESOURCE);
+ return (CPA_STATUS_SUCCESS);
+}
+
+void
+qat_mem_free_contig(void **pp_mem_addr)
+{
+ if (*pp_mem_addr != NULL) {
+ kfree(*pp_mem_addr);
+ *pp_mem_addr = NULL;
+ }
+}
+
+int
+qat_init(void)
+{
+ int ret;
+
+ ret = qat_dc_init();
+ if (ret != 0)
+ return (ret);
+
+ ret = qat_crypt_init();
+ if (ret != 0) {
+ qat_dc_fini();
+ return (ret);
+ }
+
+ qat_ksp = kstat_create("zfs", 0, "qat", "misc",
+ KSTAT_TYPE_NAMED, sizeof (qat_stats) / sizeof (kstat_named_t),
+ KSTAT_FLAG_VIRTUAL);
+ if (qat_ksp != NULL) {
+ qat_ksp->ks_data = &qat_stats;
+ kstat_install(qat_ksp);
+ }
+
+ return (0);
+}
+
+void
+qat_fini(void)
+{
+ if (qat_ksp != NULL) {
+ kstat_delete(qat_ksp);
+ qat_ksp = NULL;
+ }
+
+ qat_crypt_fini();
+ qat_dc_fini();
+}
+
+#endif
--- /dev/null
+/*
+ * 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
+ */
+
+#ifndef _SYS_QAT_H
+#define _SYS_QAT_H
+
+typedef enum qat_compress_dir {
+ QAT_DECOMPRESS = 0,
+ QAT_COMPRESS = 1,
+} qat_compress_dir_t;
+
+typedef enum qat_encrypt_dir {
+ QAT_DECRYPT = 0,
+ QAT_ENCRYPT = 1,
+} qat_encrypt_dir_t;
+
+
+#if defined(_KERNEL) && defined(HAVE_QAT)
+#include <sys/zio.h>
+#include <sys/crypto/api.h>
+#include "cpa.h"
+#include "dc/cpa_dc.h"
+#include "lac/cpa_cy_sym.h"
+
+/*
+ * Timeout - no response from hardware after 0.5 seconds
+ */
+#define QAT_TIMEOUT_MS 500
+
+/*
+ * The minimal and maximal buffer size, which are not restricted
+ * in the QAT hardware, but with the input buffer size between 4KB
+ * and 128KB, the hardware can provide the optimal performance.
+ */
+#define QAT_MIN_BUF_SIZE (4*1024)
+#define QAT_MAX_BUF_SIZE (128*1024)
+
+/*
+ * Used for qat kstat.
+ */
+typedef struct qat_stats {
+ /*
+ * Number of jobs submitted to qat compression engine.
+ */
+ kstat_named_t comp_requests;
+ /*
+ * Total bytes sent to qat compression engine.
+ */
+ kstat_named_t comp_total_in_bytes;
+ /*
+ * Total bytes output from qat compression engine.
+ */
+ kstat_named_t comp_total_out_bytes;
+ /*
+ * Number of jobs submitted to qat de-compression engine.
+ */
+ kstat_named_t decomp_requests;
+ /*
+ * Total bytes sent to qat de-compression engine.
+ */
+ kstat_named_t decomp_total_in_bytes;
+ /*
+ * Total bytes output from qat de-compression engine.
+ */
+ kstat_named_t decomp_total_out_bytes;
+ /*
+ * Number of fails in the qat compression / decompression engine.
+ * Note: when qat fail happens, it doesn't mean a critical hardware
+ * issue. Sometimes it is because the output buffer is not big enough.
+ * The compression job will be transfered to gzip software
+ * implementation, so the functionality of ZFS is not impacted.
+ */
+ kstat_named_t dc_fails;
+
+ /*
+ * Number of jobs submitted to qat encryption engine.
+ */
+ kstat_named_t encrypt_requests;
+ /*
+ * Total bytes sent to qat encryption engine.
+ */
+ kstat_named_t encrypt_total_in_bytes;
+ /*
+ * Total bytes output from qat encryption engine.
+ */
+ kstat_named_t encrypt_total_out_bytes;
+ /*
+ * Number of jobs submitted to qat decryption engine.
+ */
+ kstat_named_t decrypt_requests;
+ /*
+ * Total bytes sent to qat decryption engine.
+ */
+ kstat_named_t decrypt_total_in_bytes;
+ /*
+ * Total bytes output from qat decryption engine.
+ */
+ kstat_named_t decrypt_total_out_bytes;
+ /*
+ * Number of fails in the qat encryption / decryption engine.
+ * Note: when qat fail happens, it doesn't mean a critical hardware
+ * issue. Sometimes it is because the output buffer is not big enough.
+ * The encryption job will be transfered to the software implementation,
+ * so the functionality of ZFS is not impacted.
+ */
+ kstat_named_t crypt_fails;
+} qat_stats_t;
+
+#define QAT_STAT_INCR(stat, val) \
+ atomic_add_64(&qat_stats.stat.value.ui64, (val))
+#define QAT_STAT_BUMP(stat) \
+ QAT_STAT_INCR(stat, 1)
+
+extern qat_stats_t qat_stats;
+extern int zfs_qat_disable;
+
+/* inlined for performance */
+static inline struct page *
+qat_mem_to_page(void *addr)
+{
+ if (!is_vmalloc_addr(addr))
+ return (virt_to_page(addr));
+
+ return (vmalloc_to_page(addr));
+}
+
+CpaStatus qat_mem_alloc_contig(void **pp_mem_addr, Cpa32U size_bytes);
+void qat_mem_free_contig(void **pp_mem_addr);
+#define QAT_PHYS_CONTIG_ALLOC(pp_mem_addr, size_bytes) \
+ qat_mem_alloc_contig((void *)(pp_mem_addr), (size_bytes))
+#define QAT_PHYS_CONTIG_FREE(p_mem_addr) \
+ qat_mem_free_contig((void *)&(p_mem_addr))
+
+extern int qat_dc_init(void);
+extern void qat_dc_fini(void);
+extern int qat_crypt_init(void);
+extern void qat_crypt_fini(void);
+extern int qat_init(void);
+extern void qat_fini(void);
+
+extern boolean_t qat_dc_use_accel(size_t s_len);
+extern boolean_t qat_crypt_use_accel(size_t s_len);
+extern int qat_compress(qat_compress_dir_t dir, char *src, int src_len,
+ char *dst, int dst_len, size_t *c_len);
+extern int qat_crypt(qat_encrypt_dir_t dir, uint8_t *src_buf, uint8_t *dst_buf,
+ uint8_t *aad_buf, uint32_t aad_len, uint8_t *iv_buf, uint8_t *digest_buf,
+ crypto_key_t *key, uint64_t crypt, uint32_t enc_len);
+#else
+#define CPA_STATUS_SUCCESS 0
+#define qat_init()
+#define qat_fini()
+#define qat_dc_use_accel(s_len) 0
+#define qat_crypt_use_accel(s_len) 0
+#define qat_compress(dir, s, sl, d, dl, cl) 0
+#define qat_crypt(dir, s, d, a, al, i, db, k, c, el) 0
+#endif
+
+#endif /* _SYS_QAT_H */
#include <linux/pagemap.h>
#include <linux/completion.h>
#include <sys/zfs_context.h>
-#include "qat_compress.h"
-
-/*
- * Timeout - no response from hardware after 0.5 seconds
- */
-#define TIMEOUT_MS 500
+#include "qat.h"
/*
* Max instances in QAT device, each instance is a channel to submit
* and session arrays, the actual number of instances are defined in
* the QAT driver's configure file.
*/
-#define MAX_INSTANCES 48
+#define QAT_DC_MAX_INSTANCES 48
/*
* ZLIB head and foot size
#define ZLIB_HEAD_SZ 2
#define ZLIB_FOOT_SZ 4
-/*
- * The minimal and maximal buffer size, which are not restricted
- * in the QAT hardware, but with the input buffer size between 4KB
- * and 128KB, the hardware can provide the optimal performance.
- */
-#define QAT_MIN_BUF_SIZE (4*1024)
-#define QAT_MAX_BUF_SIZE (128*1024)
-
-/*
- * Used for qat kstat.
- */
-typedef struct qat_stats {
- /*
- * Number of jobs submitted to qat compression engine.
- */
- kstat_named_t comp_requests;
- /*
- * Total bytes sent to qat compression engine.
- */
- kstat_named_t comp_total_in_bytes;
- /*
- * Total bytes output from qat compression engine.
- */
- kstat_named_t comp_total_out_bytes;
- /*
- * Number of jobs submitted to qat de-compression engine.
- */
- kstat_named_t decomp_requests;
- /*
- * Total bytes sent to qat de-compression engine.
- */
- kstat_named_t decomp_total_in_bytes;
- /*
- * Total bytes output from qat de-compression engine.
- */
- kstat_named_t decomp_total_out_bytes;
- /*
- * Number of fails in qat engine.
- * Note: when qat fail happens, it doesn't mean a critical hardware
- * issue, sometimes it is because the output buffer is not big enough,
- * and the compression job will be transfered to gzip software again,
- * so the functionality of ZFS is not impacted.
- */
- kstat_named_t dc_fails;
-} qat_stats_t;
-
-qat_stats_t qat_stats = {
- { "comp_reqests", KSTAT_DATA_UINT64 },
- { "comp_total_in_bytes", KSTAT_DATA_UINT64 },
- { "comp_total_out_bytes", KSTAT_DATA_UINT64 },
- { "decomp_reqests", KSTAT_DATA_UINT64 },
- { "decomp_total_in_bytes", KSTAT_DATA_UINT64 },
- { "decomp_total_out_bytes", KSTAT_DATA_UINT64 },
- { "dc_fails", KSTAT_DATA_UINT64 },
-};
-
-static kstat_t *qat_ksp;
-static CpaInstanceHandle dc_inst_handles[MAX_INSTANCES];
-static CpaDcSessionHandle session_handles[MAX_INSTANCES];
-static CpaBufferList **buffer_array[MAX_INSTANCES];
+static CpaInstanceHandle dc_inst_handles[QAT_DC_MAX_INSTANCES];
+static CpaDcSessionHandle session_handles[QAT_DC_MAX_INSTANCES];
+static CpaBufferList **buffer_array[QAT_DC_MAX_INSTANCES];
static Cpa16U num_inst = 0;
static Cpa32U inst_num = 0;
-static boolean_t qat_init_done = B_FALSE;
-int zfs_qat_disable = 0;
-
-#define QAT_STAT_INCR(stat, val) \
- atomic_add_64(&qat_stats.stat.value.ui64, (val));
-#define QAT_STAT_BUMP(stat) \
- QAT_STAT_INCR(stat, 1);
+static boolean_t qat_dc_init_done = B_FALSE;
-#define PHYS_CONTIG_ALLOC(pp_mem_addr, size_bytes) \
- mem_alloc_contig((void *)(pp_mem_addr), (size_bytes))
-
-#define PHYS_CONTIG_FREE(p_mem_addr) \
- mem_free_contig((void *)&(p_mem_addr))
-
-static inline struct page *
-mem_to_page(void *addr)
+boolean_t
+qat_dc_use_accel(size_t s_len)
{
- if (!is_vmalloc_addr(addr))
- return (virt_to_page(addr));
-
- return (vmalloc_to_page(addr));
+ return (!zfs_qat_disable &&
+ qat_dc_init_done &&
+ s_len >= QAT_MIN_BUF_SIZE &&
+ s_len <= QAT_MAX_BUF_SIZE);
}
static void
complete((struct completion *)p_callback);
}
-static inline CpaStatus
-mem_alloc_contig(void **pp_mem_addr, Cpa32U size_bytes)
-{
- *pp_mem_addr = kmalloc(size_bytes, GFP_KERNEL);
- if (*pp_mem_addr == NULL)
- return (CPA_STATUS_RESOURCE);
- return (CPA_STATUS_SUCCESS);
-}
-
-static inline void
-mem_free_contig(void **pp_mem_addr)
-{
- if (*pp_mem_addr != NULL) {
- kfree(*pp_mem_addr);
- *pp_mem_addr = NULL;
- }
-}
-
static void
-qat_clean(void)
+qat_dc_clean(void)
{
Cpa16U buff_num = 0;
Cpa16U num_inter_buff_lists = 0;
for (i = 0; i < num_inst; i++) {
cpaDcStopInstance(dc_inst_handles[i]);
- PHYS_CONTIG_FREE(session_handles[i]);
+ QAT_PHYS_CONTIG_FREE(session_handles[i]);
/* free intermediate buffers */
if (buffer_array[i] != NULL) {
cpaDcGetNumIntermediateBuffers(
CpaBufferList *buffer_inter =
buffer_array[i][buff_num];
if (buffer_inter->pBuffers) {
- PHYS_CONTIG_FREE(
+ QAT_PHYS_CONTIG_FREE(
buffer_inter->pBuffers->pData);
- PHYS_CONTIG_FREE(
+ QAT_PHYS_CONTIG_FREE(
buffer_inter->pBuffers);
}
- PHYS_CONTIG_FREE(
+ QAT_PHYS_CONTIG_FREE(
buffer_inter->pPrivateMetaData);
- PHYS_CONTIG_FREE(buffer_inter);
+ QAT_PHYS_CONTIG_FREE(buffer_inter);
}
}
}
num_inst = 0;
- qat_init_done = B_FALSE;
+ qat_dc_init_done = B_FALSE;
}
int
-qat_init(void)
+qat_dc_init(void)
{
CpaStatus status = CPA_STATUS_SUCCESS;
Cpa32U sess_size = 0;
Cpa16U i;
status = cpaDcGetNumInstances(&num_inst);
- if (status != CPA_STATUS_SUCCESS || num_inst == 0)
+ if (status != CPA_STATUS_SUCCESS)
return (-1);
- if (num_inst > MAX_INSTANCES)
- num_inst = MAX_INSTANCES;
+ /* if the user has configured no QAT compression units just return */
+ if (num_inst == 0)
+ return (0);
+
+ if (num_inst > QAT_DC_MAX_INSTANCES)
+ num_inst = QAT_DC_MAX_INSTANCES;
status = cpaDcGetInstances(num_inst, &dc_inst_handles[0]);
if (status != CPA_STATUS_SUCCESS)
dc_inst_handles[i], &num_inter_buff_lists);
if (status == CPA_STATUS_SUCCESS && num_inter_buff_lists != 0)
- status = PHYS_CONTIG_ALLOC(&buffer_array[i],
+ status = QAT_PHYS_CONTIG_ALLOC(&buffer_array[i],
num_inter_buff_lists *
sizeof (CpaBufferList *));
for (buff_num = 0; buff_num < num_inter_buff_lists;
buff_num++) {
if (status == CPA_STATUS_SUCCESS)
- status = PHYS_CONTIG_ALLOC(
+ status = QAT_PHYS_CONTIG_ALLOC(
&buffer_array[i][buff_num],
sizeof (CpaBufferList));
if (status == CPA_STATUS_SUCCESS)
- status = PHYS_CONTIG_ALLOC(
+ status = QAT_PHYS_CONTIG_ALLOC(
&buffer_array[i][buff_num]->
pPrivateMetaData,
buff_meta_size);
if (status == CPA_STATUS_SUCCESS)
- status = PHYS_CONTIG_ALLOC(
+ status = QAT_PHYS_CONTIG_ALLOC(
&buffer_array[i][buff_num]->pBuffers,
sizeof (CpaFlatBuffer));
* output buffer, which is 2x max buffer
* size here.
*/
- status = PHYS_CONTIG_ALLOC(
+ status = QAT_PHYS_CONTIG_ALLOC(
&buffer_array[i][buff_num]->pBuffers->
pData, 2 * QAT_MAX_BUF_SIZE);
if (status != CPA_STATUS_SUCCESS)
if (status != CPA_STATUS_SUCCESS)
goto fail;
- PHYS_CONTIG_ALLOC(&session_handles[i], sess_size);
+ QAT_PHYS_CONTIG_ALLOC(&session_handles[i], sess_size);
if (session_handles[i] == NULL)
goto fail;
goto fail;
}
- qat_ksp = kstat_create("zfs", 0, "qat", "misc",
- KSTAT_TYPE_NAMED, sizeof (qat_stats) / sizeof (kstat_named_t),
- KSTAT_FLAG_VIRTUAL);
- if (qat_ksp != NULL) {
- qat_ksp->ks_data = &qat_stats;
- kstat_install(qat_ksp);
- }
-
- qat_init_done = B_TRUE;
+ qat_dc_init_done = B_TRUE;
return (0);
fail:
- qat_clean();
+ qat_dc_clean();
return (-1);
}
void
-qat_fini(void)
+qat_dc_fini(void)
{
- qat_clean();
+ if (!qat_dc_init_done)
+ return;
- if (qat_ksp != NULL) {
- kstat_delete(qat_ksp);
- qat_ksp = NULL;
- }
-}
-
-boolean_t
-qat_use_accel(size_t s_len)
-{
- return (!zfs_qat_disable &&
- qat_init_done &&
- s_len >= QAT_MIN_BUF_SIZE &&
- s_len <= QAT_MAX_BUF_SIZE);
+ qat_dc_clean();
}
int
Cpa32U dst_buffer_list_mem_size = sizeof (CpaBufferList) +
(num_dst_buf * sizeof (CpaFlatBuffer));
- if (PHYS_CONTIG_ALLOC(&in_pages,
+ if (QAT_PHYS_CONTIG_ALLOC(&in_pages,
num_src_buf * sizeof (struct page *)) != CPA_STATUS_SUCCESS)
goto fail;
- if (PHYS_CONTIG_ALLOC(&out_pages,
+ if (QAT_PHYS_CONTIG_ALLOC(&out_pages,
num_dst_buf * sizeof (struct page *)) != CPA_STATUS_SUCCESS)
goto fail;
cpaDcBufferListGetMetaSize(dc_inst_handle, num_src_buf,
&buffer_meta_size);
- if (PHYS_CONTIG_ALLOC(&buffer_meta_src, buffer_meta_size) !=
+ if (QAT_PHYS_CONTIG_ALLOC(&buffer_meta_src, buffer_meta_size) !=
CPA_STATUS_SUCCESS)
goto fail;
cpaDcBufferListGetMetaSize(dc_inst_handle, num_dst_buf,
&buffer_meta_size);
- if (PHYS_CONTIG_ALLOC(&buffer_meta_dst, buffer_meta_size) !=
+ if (QAT_PHYS_CONTIG_ALLOC(&buffer_meta_dst, buffer_meta_size) !=
CPA_STATUS_SUCCESS)
goto fail;
/* build source buffer list */
- if (PHYS_CONTIG_ALLOC(&buf_list_src, src_buffer_list_mem_size) !=
+ if (QAT_PHYS_CONTIG_ALLOC(&buf_list_src, src_buffer_list_mem_size) !=
CPA_STATUS_SUCCESS)
goto fail;
buf_list_src->pBuffers = flat_buf_src; /* always point to first one */
/* build destination buffer list */
- if (PHYS_CONTIG_ALLOC(&buf_list_dst, dst_buffer_list_mem_size) !=
+ if (QAT_PHYS_CONTIG_ALLOC(&buf_list_dst, dst_buffer_list_mem_size) !=
CPA_STATUS_SUCCESS)
goto fail;
data = src;
page_num = 0;
while (bytes_left > 0) {
- in_page = mem_to_page(data);
+ in_page = qat_mem_to_page(data);
in_pages[page_num] = in_page;
flat_buf_src->pData = kmap(in_page);
flat_buf_src->dataLenInBytes =
data = dst;
page_num = 0;
while (bytes_left > 0) {
- out_page = mem_to_page(data);
+ out_page = qat_mem_to_page(data);
flat_buf_dst->pData = kmap(out_page);
out_pages[page_num] = out_page;
flat_buf_dst->dataLenInBytes =
/* we now wait until the completion of the operation. */
if (!wait_for_completion_interruptible_timeout(&complete,
- TIMEOUT_MS)) {
+ QAT_TIMEOUT_MS)) {
status = CPA_STATUS_FAIL;
goto fail;
}
ret = 0;
- } else if (dir == QAT_DECOMPRESS) {
+ } else {
+ ASSERT3U(dir, ==, QAT_DECOMPRESS);
QAT_STAT_BUMP(decomp_requests);
QAT_STAT_INCR(decomp_total_in_bytes, src_len);
/* we now wait until the completion of the operation. */
if (!wait_for_completion_interruptible_timeout(&complete,
- TIMEOUT_MS)) {
+ QAT_TIMEOUT_MS)) {
status = CPA_STATUS_FAIL;
goto fail;
}
page_num++) {
kunmap(in_pages[page_num]);
}
- PHYS_CONTIG_FREE(in_pages);
+ QAT_PHYS_CONTIG_FREE(in_pages);
}
if (out_pages) {
page_num++) {
kunmap(out_pages[page_num]);
}
- PHYS_CONTIG_FREE(out_pages);
+ QAT_PHYS_CONTIG_FREE(out_pages);
}
- PHYS_CONTIG_FREE(buffer_meta_src);
- PHYS_CONTIG_FREE(buffer_meta_dst);
- PHYS_CONTIG_FREE(buf_list_src);
- PHYS_CONTIG_FREE(buf_list_dst);
+ QAT_PHYS_CONTIG_FREE(buffer_meta_src);
+ QAT_PHYS_CONTIG_FREE(buffer_meta_dst);
+ QAT_PHYS_CONTIG_FREE(buf_list_src);
+ QAT_PHYS_CONTIG_FREE(buf_list_dst);
return (ret);
}
-module_param(zfs_qat_disable, int, 0644);
-MODULE_PARM_DESC(zfs_qat_disable, "Disable QAT compression");
-
#endif
+++ /dev/null
-/*
- * 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
- */
-
-#ifndef _SYS_QAT_COMPRESS_H
-#define _SYS_QAT_COMPRESS_H
-
-#if defined(_KERNEL) && defined(HAVE_QAT)
-#include <sys/zio.h>
-#include "cpa.h"
-#include "dc/cpa_dc.h"
-
-typedef enum qat_compress_dir {
- QAT_COMPRESS = 0,
- QAT_DECOMPRESS = 1,
-} qat_compress_dir_t;
-
-extern int qat_init(void);
-extern void qat_fini(void);
-extern boolean_t qat_use_accel(size_t s_len);
-extern int qat_compress(qat_compress_dir_t dir, char *src, int src_len,
- char *dst, int dst_len, size_t *c_len);
-#else
-#define CPA_STATUS_SUCCESS 0
-#define qat_init()
-#define qat_fini()
-#define qat_use_accel(s_len) 0
-#define qat_compress(dir, s, sl, d, dl, cl) 0
-#endif
-
-#endif /* _SYS_QAT_COMPRESS_H */
--- /dev/null
+/*
+ * 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
+ */
+
+#if defined(_KERNEL) && defined(HAVE_QAT)
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <linux/pagemap.h>
+#include <linux/completion.h>
+#include <sys/zfs_context.h>
+#include <sys/zio_crypt.h>
+#include "lac/cpa_cy_im.h"
+#include "qat.h"
+
+/*
+ * Max instances in QAT device, each instance is a channel to submit
+ * jobs to QAT hardware, this is only for pre-allocating instance,
+ * and session arrays, the actual number of instances are defined in
+ * the QAT driver's configure file.
+ */
+#define QAT_CRYPT_MAX_INSTANCES 48
+
+#define MAX_PAGE_NUM 1024
+
+static boolean_t qat_crypt_init_done = B_FALSE;
+static Cpa16U inst_num = 0;
+static Cpa16U num_inst = 0;
+static CpaInstanceHandle cy_inst_handles[QAT_CRYPT_MAX_INSTANCES];
+
+typedef struct cy_callback {
+ CpaBoolean verify_result;
+ struct completion complete;
+} cy_callback_t;
+
+static void
+symcallback(void *p_callback, CpaStatus status, const CpaCySymOp operation,
+ void *op_data, CpaBufferList *buf_list_dst, CpaBoolean verify)
+{
+ cy_callback_t *cb = p_callback;
+
+ if (cb != NULL) {
+ /* indicate that the function has been called */
+ cb->verify_result = verify;
+ complete(&cb->complete);
+ }
+}
+
+boolean_t
+qat_crypt_use_accel(size_t s_len)
+{
+ return (!zfs_qat_disable &&
+ qat_crypt_init_done &&
+ s_len >= QAT_MIN_BUF_SIZE &&
+ s_len <= QAT_MAX_BUF_SIZE);
+}
+
+void
+qat_crypt_clean(void)
+{
+ for (Cpa32U i = 0; i < num_inst; i++)
+ cpaCyStopInstance(cy_inst_handles[i]);
+
+ num_inst = 0;
+ qat_crypt_init_done = B_FALSE;
+}
+
+int
+qat_crypt_init(void)
+{
+ Cpa32U i;
+ CpaStatus status = CPA_STATUS_FAIL;
+
+ status = cpaCyGetNumInstances(&num_inst);
+ if (status != CPA_STATUS_SUCCESS)
+ return (-1);
+
+ /* if the user has configured no QAT encryption units just return */
+ if (num_inst == 0)
+ return (0);
+
+ if (num_inst > QAT_CRYPT_MAX_INSTANCES)
+ num_inst = QAT_CRYPT_MAX_INSTANCES;
+
+ status = cpaCyGetInstances(num_inst, &cy_inst_handles[0]);
+ if (status != CPA_STATUS_SUCCESS)
+ return (-1);
+
+ for (i = 0; i < num_inst; i++) {
+ status = cpaCySetAddressTranslation(cy_inst_handles[i],
+ (void *)virt_to_phys);
+ if (status != CPA_STATUS_SUCCESS)
+ goto error;
+
+ status = cpaCyStartInstance(cy_inst_handles[i]);
+ if (status != CPA_STATUS_SUCCESS)
+ goto error;
+ }
+
+ qat_crypt_init_done = B_TRUE;
+ return (0);
+
+error:
+ qat_crypt_clean();
+ return (-1);
+}
+
+void
+qat_crypt_fini(void)
+{
+ if (!qat_crypt_init_done)
+ return;
+
+ qat_crypt_clean();
+}
+
+static CpaStatus
+init_cy_session_ctx(qat_encrypt_dir_t dir, CpaInstanceHandle inst_handle,
+ CpaCySymSessionCtx **cy_session_ctx, crypto_key_t *key,
+ Cpa64U crypt, Cpa32U aad_len)
+{
+ CpaStatus status = CPA_STATUS_SUCCESS;
+ Cpa32U ctx_size;
+ Cpa32U ciper_algorithm;
+ Cpa32U hash_algorithm;
+ CpaCySymSessionSetupData sd = { 0 };
+
+ if (zio_crypt_table[crypt].ci_crypt_type == ZC_TYPE_CCM) {
+ return (CPA_STATUS_FAIL);
+ } else {
+ ciper_algorithm = CPA_CY_SYM_CIPHER_AES_GCM;
+ hash_algorithm = CPA_CY_SYM_HASH_AES_GCM;
+ }
+
+ sd.cipherSetupData.cipherAlgorithm = ciper_algorithm;
+ sd.cipherSetupData.pCipherKey = key->ck_data;
+ sd.cipherSetupData.cipherKeyLenInBytes = key->ck_length / 8;
+ sd.hashSetupData.hashAlgorithm = hash_algorithm;
+ sd.hashSetupData.hashMode = CPA_CY_SYM_HASH_MODE_AUTH;
+ sd.hashSetupData.digestResultLenInBytes = ZIO_DATA_MAC_LEN;
+ sd.hashSetupData.authModeSetupData.aadLenInBytes = aad_len;
+ sd.sessionPriority = CPA_CY_PRIORITY_NORMAL;
+ sd.symOperation = CPA_CY_SYM_OP_ALGORITHM_CHAINING;
+ sd.digestIsAppended = CPA_FALSE;
+ sd.verifyDigest = CPA_FALSE;
+
+ if (dir == QAT_ENCRYPT) {
+ sd.cipherSetupData.cipherDirection =
+ CPA_CY_SYM_CIPHER_DIRECTION_ENCRYPT;
+ sd.algChainOrder =
+ CPA_CY_SYM_ALG_CHAIN_ORDER_HASH_THEN_CIPHER;
+ } else {
+ ASSERT3U(dir, ==, QAT_DECRYPT);
+ sd.cipherSetupData.cipherDirection =
+ CPA_CY_SYM_CIPHER_DIRECTION_DECRYPT;
+ sd.algChainOrder =
+ CPA_CY_SYM_ALG_CHAIN_ORDER_CIPHER_THEN_HASH;
+ }
+
+ status = cpaCySymSessionCtxGetSize(inst_handle, &sd, &ctx_size);
+ if (status != CPA_STATUS_SUCCESS)
+ return (status);
+
+ status = QAT_PHYS_CONTIG_ALLOC(cy_session_ctx, ctx_size);
+ if (status != CPA_STATUS_SUCCESS)
+ return (status);
+
+ status = cpaCySymInitSession(inst_handle, symcallback, &sd,
+ *cy_session_ctx);
+ if (status != CPA_STATUS_SUCCESS) {
+ QAT_PHYS_CONTIG_FREE(*cy_session_ctx);
+ return (status);
+ }
+
+ return (CPA_STATUS_SUCCESS);
+}
+
+static CpaStatus
+init_cy_buffer_lists(CpaInstanceHandle inst_handle, uint32_t nr_bufs,
+ CpaBufferList *src, CpaBufferList *dst)
+{
+ CpaStatus status = CPA_STATUS_SUCCESS;
+ Cpa32U meta_size = 0;
+
+ status = cpaCyBufferListGetMetaSize(inst_handle, nr_bufs, &meta_size);
+ if (status != CPA_STATUS_SUCCESS)
+ return (status);
+
+ src->numBuffers = nr_bufs;
+ status = QAT_PHYS_CONTIG_ALLOC(&src->pPrivateMetaData, meta_size);
+ if (status != CPA_STATUS_SUCCESS)
+ goto error;
+
+ if (src != dst) {
+ dst->numBuffers = nr_bufs;
+ status = QAT_PHYS_CONTIG_ALLOC(&dst->pPrivateMetaData,
+ meta_size);
+ if (status != CPA_STATUS_SUCCESS)
+ goto error;
+ }
+
+ return (CPA_STATUS_SUCCESS);
+
+error:
+ QAT_PHYS_CONTIG_FREE(src->pPrivateMetaData);
+ if (src != dst)
+ QAT_PHYS_CONTIG_FREE(dst->pPrivateMetaData);
+
+ return (status);
+}
+
+int
+qat_crypt(qat_encrypt_dir_t dir, uint8_t *src_buf, uint8_t *dst_buf,
+ uint8_t *aad_buf, uint32_t aad_len, uint8_t *iv_buf, uint8_t *digest_buf,
+ crypto_key_t *key, uint64_t crypt, uint32_t enc_len)
+{
+ CpaStatus status = CPA_STATUS_SUCCESS;
+ Cpa16U i;
+ CpaInstanceHandle cy_inst_handle;
+ Cpa16U nr_bufs;
+ Cpa32U bytes_left = 0;
+ Cpa8S *in = NULL;
+ Cpa8S *out = NULL;
+ CpaCySymSessionCtx *cy_session_ctx = NULL;
+ cy_callback_t cb;
+ CpaCySymOpData op_data = { 0 };
+ CpaBufferList src_buffer_list = { 0 };
+ CpaBufferList dst_buffer_list = { 0 };
+ CpaFlatBuffer *flat_src_buf_array = NULL;
+ CpaFlatBuffer *flat_src_buf = NULL;
+ CpaFlatBuffer *flat_dst_buf_array = NULL;
+ CpaFlatBuffer *flat_dst_buf = NULL;
+ struct page *in_pages[MAX_PAGE_NUM];
+ struct page *out_pages[MAX_PAGE_NUM];
+ Cpa32S page_num = 0;
+
+ if (dir == QAT_ENCRYPT) {
+ QAT_STAT_BUMP(encrypt_requests);
+ QAT_STAT_INCR(encrypt_total_in_bytes, enc_len);
+ } else {
+ QAT_STAT_BUMP(decrypt_requests);
+ QAT_STAT_INCR(decrypt_total_in_bytes, enc_len);
+ }
+
+ i = atomic_inc_32_nv(&inst_num) % num_inst;
+ cy_inst_handle = cy_inst_handles[i];
+
+ status = init_cy_session_ctx(dir, cy_inst_handle, &cy_session_ctx, key,
+ crypt, aad_len);
+ if (status != CPA_STATUS_SUCCESS)
+ return (status);
+
+ nr_bufs = enc_len / PAGE_CACHE_SIZE +
+ (enc_len % PAGE_CACHE_SIZE == 0 ? 0 : 1);
+ status = init_cy_buffer_lists(cy_inst_handle, nr_bufs, &src_buffer_list,
+ &dst_buffer_list);
+ if (status != CPA_STATUS_SUCCESS)
+ goto fail;
+
+ status = QAT_PHYS_CONTIG_ALLOC(&flat_src_buf_array,
+ nr_bufs * sizeof (CpaFlatBuffer));
+ if (status != CPA_STATUS_SUCCESS)
+ goto fail;
+ status = QAT_PHYS_CONTIG_ALLOC(&flat_dst_buf_array,
+ nr_bufs * sizeof (CpaFlatBuffer));
+ if (status != CPA_STATUS_SUCCESS)
+ goto fail;
+
+ bytes_left = enc_len;
+ in = src_buf;
+ out = dst_buf;
+ flat_src_buf = flat_src_buf_array;
+ flat_dst_buf = flat_dst_buf_array;
+ while (bytes_left > 0) {
+ in_pages[page_num] = qat_mem_to_page(in);
+ out_pages[page_num] = qat_mem_to_page(out);
+ flat_src_buf->pData = kmap(in_pages[page_num]);
+ flat_dst_buf->pData = kmap(out_pages[page_num]);
+ flat_src_buf->dataLenInBytes = min((long)PAGE_CACHE_SIZE,
+ (long)bytes_left);
+ flat_dst_buf->dataLenInBytes = min((long)PAGE_CACHE_SIZE,
+ (long)bytes_left);
+ in += flat_src_buf->dataLenInBytes;
+ out += flat_dst_buf->dataLenInBytes;
+ bytes_left -= flat_src_buf->dataLenInBytes;
+ flat_src_buf++;
+ flat_dst_buf++;
+ page_num++;
+ }
+ src_buffer_list.pBuffers = flat_src_buf_array;
+ dst_buffer_list.pBuffers = flat_dst_buf_array;
+
+ op_data.sessionCtx = cy_session_ctx;
+ op_data.packetType = CPA_CY_SYM_PACKET_TYPE_FULL;
+ op_data.pIv = NULL; /* set this later as the J0 block */
+ op_data.ivLenInBytes = 0;
+ op_data.cryptoStartSrcOffsetInBytes = 0;
+ op_data.messageLenToCipherInBytes = 0;
+ op_data.hashStartSrcOffsetInBytes = 0;
+ op_data.messageLenToHashInBytes = 0;
+ op_data.pDigestResult = 0;
+ op_data.messageLenToCipherInBytes = enc_len;
+ op_data.ivLenInBytes = ZIO_DATA_IV_LEN;
+ op_data.pDigestResult = digest_buf;
+ op_data.pAdditionalAuthData = aad_buf;
+ op_data.pIv = iv_buf;
+
+ cb.verify_result = CPA_FALSE;
+ init_completion(&cb.complete);
+ status = cpaCySymPerformOp(cy_inst_handle, &cb, &op_data,
+ &src_buffer_list, &dst_buffer_list, NULL);
+ if (status != CPA_STATUS_SUCCESS)
+ goto fail;
+
+ if (!wait_for_completion_interruptible_timeout(&cb.complete,
+ QAT_TIMEOUT_MS)) {
+ status = CPA_STATUS_FAIL;
+ goto fail;
+ }
+
+ if (cb.verify_result == CPA_FALSE) {
+ status = CPA_STATUS_FAIL;
+ goto fail;
+ }
+
+ if (dir == QAT_ENCRYPT)
+ QAT_STAT_INCR(encrypt_total_out_bytes, enc_len);
+ else
+ QAT_STAT_INCR(decrypt_total_out_bytes, enc_len);
+
+fail:
+ /* don't count CCM as a failure since it's not supported */
+ if (status != CPA_STATUS_SUCCESS &&
+ zio_crypt_table[crypt].ci_crypt_type != ZC_TYPE_CCM)
+ QAT_STAT_BUMP(crypt_fails);
+
+ for (i = 0; i < page_num; i ++) {
+ kunmap(in_pages[i]);
+ kunmap(out_pages[i]);
+ }
+
+ cpaCySymRemoveSession(cy_inst_handle, cy_session_ctx);
+ QAT_PHYS_CONTIG_FREE(src_buffer_list.pPrivateMetaData);
+ QAT_PHYS_CONTIG_FREE(dst_buffer_list.pPrivateMetaData);
+ QAT_PHYS_CONTIG_FREE(cy_session_ctx);
+ QAT_PHYS_CONTIG_FREE(flat_src_buf_array);
+ QAT_PHYS_CONTIG_FREE(flat_dst_buf_array);
+
+ return (status);
+}
+
+module_param(zfs_qat_disable, int, 0644);
+MODULE_PARM_DESC(zfs_qat_disable, "Disable QAT acceleration");
+
+#endif
#include <sys/kstat.h>
#include "zfs_prop.h"
#include <sys/zfeature.h>
-#include "qat_compress.h"
+#include "qat.h"
/*
* SPA locking
#include <sys/zil.h>
#include <sys/sha2.h>
#include <sys/hkdf.h>
+#include "qat.h"
/*
* This file is responsible for handling all of the details of generating
crypto_ctx_template_t tmpl;
uint8_t *authbuf = NULL;
- bzero(&puio, sizeof (uio_t));
- bzero(&cuio, sizeof (uio_t));
-
- /* create uios for encryption */
- ret = zio_crypt_init_uios(encrypt, key->zk_version, ot, plainbuf,
- cipherbuf, datalen, byteswap, mac, &puio, &cuio, &enc_len,
- &authbuf, &auth_len, no_crypt);
- if (ret != 0)
- return (ret);
-
/*
* If the needed key is the current one, just use it. Otherwise we
* need to generate a temporary one from the given salt + master key.
tmpl = NULL;
}
- /* perform the encryption / decryption */
+ /*
+ * Attempt to use QAT acceleration if we can. We currently don't
+ * do this for metadnode and ZIL blocks, since they have a much
+ * more involved buffer layout and the qat_crypt() function only
+ * works in-place.
+ */
+ if (qat_crypt_use_accel(datalen) &&
+ ot != DMU_OT_INTENT_LOG && ot != DMU_OT_DNODE) {
+ uint8_t *srcbuf, *dstbuf;
+
+ if (encrypt) {
+ srcbuf = plainbuf;
+ dstbuf = cipherbuf;
+ } else {
+ srcbuf = cipherbuf;
+ dstbuf = plainbuf;
+ }
+
+ ret = qat_crypt((encrypt) ? QAT_ENCRYPT : QAT_DECRYPT, srcbuf,
+ dstbuf, NULL, 0, iv, mac, ckey, key->zk_crypt, datalen);
+ if (ret == CPA_STATUS_SUCCESS) {
+ if (locked) {
+ rw_exit(&key->zk_salt_lock);
+ locked = B_FALSE;
+ }
+
+ return (0);
+ }
+ /* If the hardware implementation fails fall back to software */
+ }
+
+ bzero(&puio, sizeof (uio_t));
+ bzero(&cuio, sizeof (uio_t));
+
+ /* create uios for encryption */
+ ret = zio_crypt_init_uios(encrypt, key->zk_version, ot, plainbuf,
+ cipherbuf, datalen, byteswap, mac, &puio, &cuio, &enc_len,
+ &authbuf, &auth_len, no_crypt);
+ if (ret != 0)
+ goto error;
+
+ /* perform the encryption / decryption in software */
ret = zio_do_crypt_uio(encrypt, key->zk_crypt, ckey, tmpl, iv, enc_len,
&puio, &cuio, authbuf, auth_len);
if (ret != 0)
projects / zfs / commitdiff