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-rw-r--r--man/man5/zfs-module-parameters.552
-rw-r--r--module/zfs/qat.c27
-rw-r--r--module/zfs/qat.h7
-rw-r--r--module/zfs/qat_compress.c39
-rw-r--r--module/zfs/qat_crypt.c108
5 files changed, 182 insertions, 51 deletions
diff --git a/man/man5/zfs-module-parameters.5 b/man/man5/zfs-module-parameters.5
index a1a586df1..4a3ff1d49 100644
--- a/man/man5/zfs-module-parameters.5
+++ b/man/man5/zfs-module-parameters.5
@@ -2045,6 +2045,45 @@ Use \fB1\fR for yes and \fB0\fR for no (default).
.sp
.ne 2
.na
+\fBzfs_qat_checksum_disable\fR (int)
+.ad
+.RS 12n
+This tunable disables qat hardware acceleration for sha256 checksums. It
+may be set after the zfs modules have been loaded to initialize the qat
+hardware as long as support is compiled in and the qat driver is present.
+.sp
+Use \fB1\fR for yes and \fB0\fR for no (default).
+.RE
+
+.sp
+.ne 2
+.na
+\fBzfs_qat_compress_disable\fR (int)
+.ad
+.RS 12n
+This tunable disables qat hardware acceleration for gzip compression. It
+may be set after the zfs modules have been loaded to initialize the qat
+hardware as long as support is compiled in and the qat driver is present.
+.sp
+Use \fB1\fR for yes and \fB0\fR for no (default).
+.RE
+
+.sp
+.ne 2
+.na
+\fBzfs_qat_encrypt_disable\fR (int)
+.ad
+.RS 12n
+This tunable disables qat hardware acceleration for AES-GCM encryption. It
+may be set after the zfs modules have been loaded to initialize the qat
+hardware as long as support is compiled in and the qat driver is present.
+.sp
+Use \fB1\fR for yes and \fB0\fR for no (default).
+.RE
+
+.sp
+.ne 2
+.na
\fBzfs_read_chunk_size\fR (long)
.ad
.RS 12n
@@ -2961,19 +3000,6 @@ Valid values are \fB1\fR (full), \fB2\fR (dev) and \fB3\fR (none).
Default value: \fB1\fR.
.RE
-.sp
-.ne 2
-.na
-\fBzfs_qat_disable\fR (int)
-.ad
-.RS 12n
-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
-
.SH ZFS I/O SCHEDULER
ZFS issues I/O operations to leaf vdevs to satisfy and complete I/Os.
The I/O scheduler determines when and in what order those operations are
diff --git a/module/zfs/qat.c b/module/zfs/qat.c
index 0a4f9c72a..a6f024cb4 100644
--- a/module/zfs/qat.c
+++ b/module/zfs/qat.c
@@ -66,18 +66,6 @@ qat_mem_free_contig(void **pp_mem_addr)
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);
@@ -86,6 +74,19 @@ qat_init(void)
kstat_install(qat_ksp);
}
+ /*
+ * Just set the disable flag when qat init failed, qat can be
+ * turned on again in post-process after zfs module is loaded, e.g.:
+ * echo 0 > /sys/module/zfs/parameters/zfs_qat_compress_disable
+ */
+ if (qat_dc_init() != 0)
+ zfs_qat_compress_disable = 1;
+
+ if (qat_cy_init() != 0) {
+ zfs_qat_checksum_disable = 1;
+ zfs_qat_encrypt_disable = 1;
+ }
+
return (0);
}
@@ -97,7 +98,7 @@ qat_fini(void)
qat_ksp = NULL;
}
- qat_crypt_fini();
+ qat_cy_fini();
qat_dc_fini();
}
diff --git a/module/zfs/qat.h b/module/zfs/qat.h
index b2cd5a9c1..9014c0314 100644
--- a/module/zfs/qat.h
+++ b/module/zfs/qat.h
@@ -147,6 +147,9 @@ typedef struct qat_stats {
QAT_STAT_INCR(stat, 1)
extern qat_stats_t qat_stats;
+extern int zfs_qat_compress_disable;
+extern int zfs_qat_checksum_disable;
+extern int zfs_qat_encrypt_disable;
/* inlined for performance */
static inline struct page *
@@ -167,8 +170,8 @@ void qat_mem_free_contig(void **pp_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_cy_init(void);
+extern void qat_cy_fini(void);
extern int qat_init(void);
extern void qat_fini(void);
diff --git a/module/zfs/qat_compress.c b/module/zfs/qat_compress.c
index 8c1410c9e..1c5c0a4e7 100644
--- a/module/zfs/qat_compress.c
+++ b/module/zfs/qat_compress.c
@@ -24,7 +24,9 @@
#include <linux/vmalloc.h>
#include <linux/pagemap.h>
#include <linux/completion.h>
+#include <linux/mod_compat.h>
#include <sys/zfs_context.h>
+#include <sys/byteorder.h>
#include <sys/zio.h>
#include "qat.h"
@@ -111,6 +113,9 @@ qat_dc_init(void)
Cpa32U buff_meta_size = 0;
CpaDcSessionSetupData sd = {0};
+ if (qat_dc_init_done)
+ return (0);
+
status = cpaDcGetNumInstances(&num_inst);
if (status != CPA_STATUS_SUCCESS)
return (-1);
@@ -252,6 +257,7 @@ qat_compress_impl(qat_compress_dir_t dir, char *src, int src_len,
Cpa32U num_add_buf = (add_len >> PAGE_SHIFT) + 2;
Cpa32U bytes_left;
Cpa32U dst_pages = 0;
+ Cpa32U adler32 = 0;
char *data;
struct page *page;
struct page **in_pages = NULL;
@@ -468,6 +474,12 @@ qat_compress_impl(qat_compress_dir_t dir, char *src, int src_len,
goto fail;
}
+ /* verify adler checksum */
+ adler32 = *(Cpa32U *)(src + dc_results.consumed + ZLIB_HEAD_SZ);
+ if (adler32 != BSWAP_32(dc_results.checksum)) {
+ status = CPA_STATUS_FAIL;
+ goto fail;
+ }
*c_len = dc_results.produced;
QAT_STAT_INCR(decomp_total_out_bytes, *c_len);
}
@@ -534,7 +546,30 @@ qat_compress(qat_compress_dir_t dir, char *src, int src_len,
return (ret);
}
-module_param(zfs_qat_compress_disable, int, 0644);
-MODULE_PARM_DESC(zfs_qat_compress_disable, "Disable QAT compression");
+static int
+param_set_qat_compress(const char *val, struct kernel_param *kp)
+{
+ int ret;
+ int *pvalue = kp->arg;
+ ret = param_set_int(val, kp);
+ if (ret)
+ return (ret);
+ /*
+ * zfs_qat_compress_disable = 0: enable qat compress
+ * try to initialize qat instance if it has not been done
+ */
+ if (*pvalue == 0 && !qat_dc_init_done) {
+ ret = qat_dc_init();
+ if (ret != 0) {
+ zfs_qat_compress_disable = 1;
+ return (ret);
+ }
+ }
+ return (ret);
+}
+
+module_param_call(zfs_qat_compress_disable, param_set_qat_compress,
+ param_get_int, &zfs_qat_compress_disable, 0644);
+MODULE_PARM_DESC(zfs_qat_compress_disable, "Enable/Disable QAT compression");
#endif
diff --git a/module/zfs/qat_crypt.c b/module/zfs/qat_crypt.c
index 5a5113e68..34c19b582 100644
--- a/module/zfs/qat_crypt.c
+++ b/module/zfs/qat_crypt.c
@@ -31,6 +31,7 @@
#include <linux/vmalloc.h>
#include <linux/pagemap.h>
#include <linux/completion.h>
+#include <linux/mod_compat.h>
#include <sys/zfs_context.h>
#include <sys/zio_crypt.h>
#include "lac/cpa_cy_im.h"
@@ -50,7 +51,7 @@
static Cpa32U inst_num = 0;
static Cpa16U num_inst = 0;
static CpaInstanceHandle cy_inst_handles[QAT_CRYPT_MAX_INSTANCES];
-static boolean_t qat_crypt_init_done = B_FALSE;
+static boolean_t qat_cy_init_done = B_FALSE;
int zfs_qat_encrypt_disable = 0;
int zfs_qat_checksum_disable = 0;
@@ -76,7 +77,7 @@ boolean_t
qat_crypt_use_accel(size_t s_len)
{
return (!zfs_qat_encrypt_disable &&
- qat_crypt_init_done &&
+ qat_cy_init_done &&
s_len >= QAT_MIN_BUF_SIZE &&
s_len <= QAT_MAX_BUF_SIZE);
}
@@ -85,26 +86,29 @@ boolean_t
qat_checksum_use_accel(size_t s_len)
{
return (!zfs_qat_checksum_disable &&
- qat_crypt_init_done &&
+ qat_cy_init_done &&
s_len >= QAT_MIN_BUF_SIZE &&
s_len <= QAT_MAX_BUF_SIZE);
}
void
-qat_crypt_clean(void)
+qat_cy_clean(void)
{
for (Cpa16U i = 0; i < num_inst; i++)
cpaCyStopInstance(cy_inst_handles[i]);
num_inst = 0;
- qat_crypt_init_done = B_FALSE;
+ qat_cy_init_done = B_FALSE;
}
int
-qat_crypt_init(void)
+qat_cy_init(void)
{
CpaStatus status = CPA_STATUS_FAIL;
+ if (qat_cy_init_done)
+ return (0);
+
status = cpaCyGetNumInstances(&num_inst);
if (status != CPA_STATUS_SUCCESS)
return (-1);
@@ -131,21 +135,21 @@ qat_crypt_init(void)
goto error;
}
- qat_crypt_init_done = B_TRUE;
+ qat_cy_init_done = B_TRUE;
return (0);
error:
- qat_crypt_clean();
+ qat_cy_clean();
return (-1);
}
void
-qat_crypt_fini(void)
+qat_cy_fini(void)
{
- if (!qat_crypt_init_done)
+ if (!qat_cy_init_done)
return;
- qat_crypt_clean();
+ qat_cy_clean();
}
static CpaStatus
@@ -351,6 +355,21 @@ qat_crypt(qat_encrypt_dir_t dir, uint8_t *src_buf, uint8_t *dst_buf,
nr_bufs * sizeof (CpaFlatBuffer));
if (status != CPA_STATUS_SUCCESS)
goto fail;
+ status = QAT_PHYS_CONTIG_ALLOC(&op_data.pDigestResult,
+ ZIO_DATA_MAC_LEN);
+ if (status != CPA_STATUS_SUCCESS)
+ goto fail;
+ status = QAT_PHYS_CONTIG_ALLOC(&op_data.pIv,
+ ZIO_DATA_IV_LEN);
+ if (status != CPA_STATUS_SUCCESS)
+ goto fail;
+ if (aad_len > 0) {
+ status = QAT_PHYS_CONTIG_ALLOC(&op_data.pAdditionalAuthData,
+ aad_len);
+ if (status != CPA_STATUS_SUCCESS)
+ goto fail;
+ bcopy(aad_buf, op_data.pAdditionalAuthData, aad_len);
+ }
bytes_left = enc_len;
data = src_buf;
@@ -389,18 +408,13 @@ qat_crypt(qat_encrypt_dir_t dir, uint8_t *src_buf, uint8_t *dst_buf,
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;
+ bcopy(iv_buf, op_data.pIv, ZIO_DATA_IV_LEN);
cb.verify_result = CPA_FALSE;
init_completion(&cb.complete);
@@ -420,6 +434,8 @@ qat_crypt(qat_encrypt_dir_t dir, uint8_t *src_buf, uint8_t *dst_buf,
goto fail;
}
+ /* save digest result to digest_buf */
+ bcopy(op_data.pDigestResult, digest_buf, ZIO_DATA_MAC_LEN);
if (dir == QAT_ENCRYPT)
QAT_STAT_INCR(encrypt_total_out_bytes, enc_len);
else
@@ -435,6 +451,10 @@ fail:
kunmap(out_pages[i]);
cpaCySymRemoveSession(cy_inst_handle, cy_session_ctx);
+ if (aad_len > 0)
+ QAT_PHYS_CONTIG_FREE(op_data.pAdditionalAuthData);
+ QAT_PHYS_CONTIG_FREE(op_data.pIv);
+ QAT_PHYS_CONTIG_FREE(op_data.pDigestResult);
QAT_PHYS_CONTIG_FREE(src_buffer_list.pPrivateMetaData);
QAT_PHYS_CONTIG_FREE(dst_buffer_list.pPrivateMetaData);
QAT_PHYS_CONTIG_FREE(cy_session_ctx);
@@ -557,10 +577,56 @@ fail:
return (status);
}
-module_param(zfs_qat_encrypt_disable, int, 0644);
-MODULE_PARM_DESC(zfs_qat_encrypt_disable, "Disable QAT encryption");
+static int
+param_set_qat_encrypt(const char *val, struct kernel_param *kp)
+{
+ int ret;
+ int *pvalue = kp->arg;
+ ret = param_set_int(val, kp);
+ if (ret)
+ return (ret);
+ /*
+ * zfs_qat_encrypt_disable = 0: enable qat encrypt
+ * try to initialize qat instance if it has not been done
+ */
+ if (*pvalue == 0 && !qat_cy_init_done) {
+ ret = qat_cy_init();
+ if (ret != 0) {
+ zfs_qat_encrypt_disable = 1;
+ return (ret);
+ }
+ }
+ return (ret);
+}
+
+static int
+param_set_qat_checksum(const char *val, struct kernel_param *kp)
+{
+ int ret;
+ int *pvalue = kp->arg;
+ ret = param_set_int(val, kp);
+ if (ret)
+ return (ret);
+ /*
+ * set_checksum_param_ops = 0: enable qat checksum
+ * try to initialize qat instance if it has not been done
+ */
+ if (*pvalue == 0 && !qat_cy_init_done) {
+ ret = qat_cy_init();
+ if (ret != 0) {
+ zfs_qat_checksum_disable = 1;
+ return (ret);
+ }
+ }
+ return (ret);
+}
+
+module_param_call(zfs_qat_encrypt_disable, param_set_qat_encrypt,
+ param_get_int, &zfs_qat_encrypt_disable, 0644);
+MODULE_PARM_DESC(zfs_qat_encrypt_disable, "Enable/Disable QAT encryption");
-module_param(zfs_qat_checksum_disable, int, 0644);
-MODULE_PARM_DESC(zfs_qat_checksum_disable, "Disable QAT checksumming");
+module_param_call(zfs_qat_checksum_disable, param_set_qat_checksum,
+ param_get_int, &zfs_qat_checksum_disable, 0644);
+MODULE_PARM_DESC(zfs_qat_checksum_disable, "Enable/Disable QAT checksumming");
#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-18 15:09:37 +0000