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-rw-r--r--module/zfs/zio_checksum.c113
1 files changed, 83 insertions, 30 deletions
diff --git a/module/zfs/zio_checksum.c b/module/zfs/zio_checksum.c
index d3d2f05a8..37116f049 100644
--- a/module/zfs/zio_checksum.c
+++ b/module/zfs/zio_checksum.c
@@ -20,8 +20,8 @@
*/
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2013 by Delphix. All rights reserved.
* Copyright 2013 Saso Kiselkov. All rights reserved.
+ * Copyright (c) 2013, 2016 by Delphix. All rights reserved.
*/
#include <sys/zfs_context.h>
@@ -30,6 +30,7 @@
#include <sys/zio.h>
#include <sys/zio_checksum.h>
#include <sys/zil.h>
+#include <sys/abd.h>
#include <zfs_fletcher.h>
/*
@@ -92,45 +93,85 @@
/*ARGSUSED*/
static void
-zio_checksum_off(const void *buf, uint64_t size,
- const void *ctx_template, zio_cksum_t *zcp)
+abd_checksum_off(abd_t *abd, uint64_t size,
+ const void *ctx_template, zio_cksum_t *zcp)
{
ZIO_SET_CHECKSUM(zcp, 0, 0, 0, 0);
}
+/*ARGSUSED*/
+void
+abd_fletcher_2_native(abd_t *abd, uint64_t size,
+ const void *ctx_template, zio_cksum_t *zcp)
+{
+ fletcher_init(zcp);
+ (void) abd_iterate_func(abd, 0, size,
+ fletcher_2_incremental_native, zcp);
+}
+
+/*ARGSUSED*/
+void
+abd_fletcher_2_byteswap(abd_t *abd, uint64_t size,
+ const void *ctx_template, zio_cksum_t *zcp)
+{
+ fletcher_init(zcp);
+ (void) abd_iterate_func(abd, 0, size,
+ fletcher_2_incremental_byteswap, zcp);
+}
+
+/*ARGSUSED*/
+void
+abd_fletcher_4_native(abd_t *abd, uint64_t size,
+ const void *ctx_template, zio_cksum_t *zcp)
+{
+ fletcher_init(zcp);
+ (void) abd_iterate_func(abd, 0, size,
+ fletcher_4_incremental_native, zcp);
+}
+
+/*ARGSUSED*/
+void
+abd_fletcher_4_byteswap(abd_t *abd, uint64_t size,
+ const void *ctx_template, zio_cksum_t *zcp)
+{
+ fletcher_init(zcp);
+ (void) abd_iterate_func(abd, 0, size,
+ fletcher_4_incremental_byteswap, zcp);
+}
+
zio_checksum_info_t zio_checksum_table[ZIO_CHECKSUM_FUNCTIONS] = {
{{NULL, NULL}, NULL, NULL, 0, "inherit"},
{{NULL, NULL}, NULL, NULL, 0, "on"},
- {{zio_checksum_off, zio_checksum_off},
+ {{abd_checksum_off, abd_checksum_off},
NULL, NULL, 0, "off"},
- {{zio_checksum_SHA256, zio_checksum_SHA256},
+ {{abd_checksum_SHA256, abd_checksum_SHA256},
NULL, NULL, ZCHECKSUM_FLAG_METADATA | ZCHECKSUM_FLAG_EMBEDDED,
"label"},
- {{zio_checksum_SHA256, zio_checksum_SHA256},
+ {{abd_checksum_SHA256, abd_checksum_SHA256},
NULL, NULL, ZCHECKSUM_FLAG_METADATA | ZCHECKSUM_FLAG_EMBEDDED,
"gang_header"},
- {{fletcher_2_native, fletcher_2_byteswap},
+ {{abd_fletcher_2_native, abd_fletcher_2_byteswap},
NULL, NULL, ZCHECKSUM_FLAG_EMBEDDED, "zilog"},
- {{fletcher_2_native, fletcher_2_byteswap},
+ {{abd_fletcher_2_native, abd_fletcher_2_byteswap},
NULL, NULL, 0, "fletcher2"},
- {{fletcher_4_native, fletcher_4_byteswap},
+ {{abd_fletcher_4_native, abd_fletcher_4_byteswap},
NULL, NULL, ZCHECKSUM_FLAG_METADATA, "fletcher4"},
- {{zio_checksum_SHA256, zio_checksum_SHA256},
+ {{abd_checksum_SHA256, abd_checksum_SHA256},
NULL, NULL, ZCHECKSUM_FLAG_METADATA | ZCHECKSUM_FLAG_DEDUP |
ZCHECKSUM_FLAG_NOPWRITE, "sha256"},
- {{fletcher_4_native, fletcher_4_byteswap},
+ {{abd_fletcher_4_native, abd_fletcher_4_byteswap},
NULL, NULL, ZCHECKSUM_FLAG_EMBEDDED, "zilog2"},
- {{zio_checksum_off, zio_checksum_off},
+ {{abd_checksum_off, abd_checksum_off},
NULL, NULL, 0, "noparity"},
- {{zio_checksum_SHA512_native, zio_checksum_SHA512_byteswap},
+ {{abd_checksum_SHA512_native, abd_checksum_SHA512_byteswap},
NULL, NULL, ZCHECKSUM_FLAG_METADATA | ZCHECKSUM_FLAG_DEDUP |
ZCHECKSUM_FLAG_NOPWRITE, "sha512"},
- {{zio_checksum_skein_native, zio_checksum_skein_byteswap},
- zio_checksum_skein_tmpl_init, zio_checksum_skein_tmpl_free,
+ {{abd_checksum_skein_native, abd_checksum_skein_byteswap},
+ abd_checksum_skein_tmpl_init, abd_checksum_skein_tmpl_free,
ZCHECKSUM_FLAG_METADATA | ZCHECKSUM_FLAG_DEDUP |
ZCHECKSUM_FLAG_SALTED | ZCHECKSUM_FLAG_NOPWRITE, "skein"},
- {{zio_checksum_edonr_native, zio_checksum_edonr_byteswap},
- zio_checksum_edonr_tmpl_init, zio_checksum_edonr_tmpl_free,
+ {{abd_checksum_edonr_native, abd_checksum_edonr_byteswap},
+ abd_checksum_edonr_tmpl_init, abd_checksum_edonr_tmpl_free,
ZCHECKSUM_FLAG_METADATA | ZCHECKSUM_FLAG_SALTED |
ZCHECKSUM_FLAG_NOPWRITE, "edonr"},
};
@@ -251,7 +292,7 @@ zio_checksum_template_init(enum zio_checksum checksum, spa_t *spa)
*/
void
zio_checksum_compute(zio_t *zio, enum zio_checksum checksum,
- void *data, uint64_t size)
+ abd_t *abd, uint64_t size)
{
blkptr_t *bp = zio->io_bp;
uint64_t offset = zio->io_offset;
@@ -266,6 +307,7 @@ zio_checksum_compute(zio_t *zio, enum zio_checksum checksum,
if (ci->ci_flags & ZCHECKSUM_FLAG_EMBEDDED) {
zio_eck_t *eck;
+ void *data = abd_to_buf(abd);
if (checksum == ZIO_CHECKSUM_ZILOG2) {
zil_chain_t *zilc = data;
@@ -283,18 +325,18 @@ zio_checksum_compute(zio_t *zio, enum zio_checksum checksum,
else
bp->blk_cksum = eck->zec_cksum;
eck->zec_magic = ZEC_MAGIC;
- ci->ci_func[0](data, size, spa->spa_cksum_tmpls[checksum],
+ ci->ci_func[0](abd, size, spa->spa_cksum_tmpls[checksum],
&cksum);
eck->zec_cksum = cksum;
} else {
- ci->ci_func[0](data, size, spa->spa_cksum_tmpls[checksum],
+ ci->ci_func[0](abd, size, spa->spa_cksum_tmpls[checksum],
&bp->blk_cksum);
}
}
int
zio_checksum_error_impl(spa_t *spa, blkptr_t *bp, enum zio_checksum checksum,
- void *data, uint64_t size, uint64_t offset, zio_bad_cksum_t *info)
+ abd_t *abd, uint64_t size, uint64_t offset, zio_bad_cksum_t *info)
{
zio_checksum_info_t *ci = &zio_checksum_table[checksum];
int byteswap;
@@ -308,25 +350,32 @@ zio_checksum_error_impl(spa_t *spa, blkptr_t *bp, enum zio_checksum checksum,
if (ci->ci_flags & ZCHECKSUM_FLAG_EMBEDDED) {
zio_eck_t *eck;
zio_cksum_t verifier;
+ size_t eck_offset;
+ uint64_t data_size = size;
+ void *data = abd_borrow_buf_copy(abd, data_size);
if (checksum == ZIO_CHECKSUM_ZILOG2) {
zil_chain_t *zilc = data;
uint64_t nused;
eck = &zilc->zc_eck;
- if (eck->zec_magic == ZEC_MAGIC)
+ if (eck->zec_magic == ZEC_MAGIC) {
nused = zilc->zc_nused;
- else if (eck->zec_magic == BSWAP_64(ZEC_MAGIC))
+ } else if (eck->zec_magic == BSWAP_64(ZEC_MAGIC)) {
nused = BSWAP_64(zilc->zc_nused);
- else
+ } else {
+ abd_return_buf(abd, data, data_size);
return (SET_ERROR(ECKSUM));
+ }
- if (nused > size)
+ if (nused > data_size) {
+ abd_return_buf(abd, data, data_size);
return (SET_ERROR(ECKSUM));
+ }
size = P2ROUNDUP_TYPED(nused, ZIL_MIN_BLKSZ, uint64_t);
} else {
- eck = (zio_eck_t *)((char *)data + size) - 1;
+ eck = (zio_eck_t *)((char *)data + data_size) - 1;
}
if (checksum == ZIO_CHECKSUM_GANG_HEADER)
@@ -341,11 +390,15 @@ zio_checksum_error_impl(spa_t *spa, blkptr_t *bp, enum zio_checksum checksum,
if (byteswap)
byteswap_uint64_array(&verifier, sizeof (zio_cksum_t));
+ eck_offset = (size_t)(&eck->zec_cksum) - (size_t)data;
expected_cksum = eck->zec_cksum;
eck->zec_cksum = verifier;
- ci->ci_func[byteswap](data, size,
+ abd_return_buf_copy(abd, data, data_size);
+
+ ci->ci_func[byteswap](abd, size,
spa->spa_cksum_tmpls[checksum], &actual_cksum);
- eck->zec_cksum = expected_cksum;
+ abd_copy_from_buf_off(abd, &expected_cksum,
+ eck_offset, sizeof (zio_cksum_t));
if (byteswap) {
byteswap_uint64_array(&expected_cksum,
@@ -354,7 +407,7 @@ zio_checksum_error_impl(spa_t *spa, blkptr_t *bp, enum zio_checksum checksum,
} else {
byteswap = BP_SHOULD_BYTESWAP(bp);
expected_cksum = bp->blk_cksum;
- ci->ci_func[byteswap](data, size,
+ ci->ci_func[byteswap](abd, size,
spa->spa_cksum_tmpls[checksum], &actual_cksum);
}
@@ -383,7 +436,7 @@ zio_checksum_error(zio_t *zio, zio_bad_cksum_t *info)
uint64_t size = (bp == NULL ? zio->io_size :
(BP_IS_GANG(bp) ? SPA_GANGBLOCKSIZE : BP_GET_PSIZE(bp)));
uint64_t offset = zio->io_offset;
- void *data = zio->io_data;
+ abd_t *data = zio->io_abd;
spa_t *spa = zio->io_spa;
error = zio_checksum_error_impl(spa, bp, checksum, data, size,
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-18 13:47:55 +0000