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block: Remove integrity tagging functions

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None of the filesystems appear interested in using the integrity tagging
feature. Potentially because very few storage devices actually permit
using the application tag space.

Remove the tagging functions.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Martin K. Petersen
2014-09-26 19:19:57 -04:00
committed by Jens Axboe
parent 180b2f95dd
commit 8492b68bc4
6 changed files with 1 additions and 201 deletions
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65
drivers/scsi/sd_dif.c
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@@ -128,39 +128,10 @@ static int sd_dif_type1_verify_ip(struct blk_integrity_exchg *bix)
return sd_dif_type1_verify(bix, sd_dif_ip_fn);
}
/*
* Functions for interleaving and deinterleaving application tags
*/
static void sd_dif_type1_set_tag(void *prot, void *tag_buf, unsigned int sectors)
{
struct sd_dif_tuple *sdt = prot;
u8 *tag = tag_buf;
unsigned int i, j;
for (i = 0, j = 0 ; i < sectors ; i++, j += 2, sdt++) {
sdt->app_tag = tag[j] << 8 | tag[j+1];
BUG_ON(sdt->app_tag == 0xffff);
}
}
static void sd_dif_type1_get_tag(void *prot, void *tag_buf, unsigned int sectors)
{
struct sd_dif_tuple *sdt = prot;
u8 *tag = tag_buf;
unsigned int i, j;
for (i = 0, j = 0 ; i < sectors ; i++, j += 2, sdt++) {
tag[j] = (sdt->app_tag & 0xff00) >> 8;
tag[j+1] = sdt->app_tag & 0xff;
}
}
static struct blk_integrity dif_type1_integrity_crc = {
.name = "T10-DIF-TYPE1-CRC",
.generate_fn = sd_dif_type1_generate_crc,
.verify_fn = sd_dif_type1_verify_crc,
.get_tag_fn = sd_dif_type1_get_tag,
.set_tag_fn = sd_dif_type1_set_tag,
.tuple_size = sizeof(struct sd_dif_tuple),
.tag_size = 0,
};
@@ -169,8 +140,6 @@ static struct blk_integrity dif_type1_integrity_ip = {
.name = "T10-DIF-TYPE1-IP",
.generate_fn = sd_dif_type1_generate_ip,
.verify_fn = sd_dif_type1_verify_ip,
.get_tag_fn = sd_dif_type1_get_tag,
.set_tag_fn = sd_dif_type1_set_tag,
.tuple_size = sizeof(struct sd_dif_tuple),
.tag_size = 0,
};
@@ -245,42 +214,10 @@ static int sd_dif_type3_verify_ip(struct blk_integrity_exchg *bix)
return sd_dif_type3_verify(bix, sd_dif_ip_fn);
}
static void sd_dif_type3_set_tag(void *prot, void *tag_buf, unsigned int sectors)
{
struct sd_dif_tuple *sdt = prot;
u8 *tag = tag_buf;
unsigned int i, j;
for (i = 0, j = 0 ; i < sectors ; i++, j += 6, sdt++) {
sdt->app_tag = tag[j] << 8 | tag[j+1];
sdt->ref_tag = tag[j+2] << 24 | tag[j+3] << 16 |
tag[j+4] << 8 | tag[j+5];
}
}
static void sd_dif_type3_get_tag(void *prot, void *tag_buf, unsigned int sectors)
{
struct sd_dif_tuple *sdt = prot;
u8 *tag = tag_buf;
unsigned int i, j;
for (i = 0, j = 0 ; i < sectors ; i++, j += 2, sdt++) {
tag[j] = (sdt->app_tag & 0xff00) >> 8;
tag[j+1] = sdt->app_tag & 0xff;
tag[j+2] = (sdt->ref_tag & 0xff000000) >> 24;
tag[j+3] = (sdt->ref_tag & 0xff0000) >> 16;
tag[j+4] = (sdt->ref_tag & 0xff00) >> 8;
tag[j+5] = sdt->ref_tag & 0xff;
BUG_ON(sdt->app_tag == 0xffff || sdt->ref_tag == 0xffffffff);
}
}
static struct blk_integrity dif_type3_integrity_crc = {
.name = "T10-DIF-TYPE3-CRC",
.generate_fn = sd_dif_type3_generate_crc,
.verify_fn = sd_dif_type3_verify_crc,
.get_tag_fn = sd_dif_type3_get_tag,
.set_tag_fn = sd_dif_type3_set_tag,
.tuple_size = sizeof(struct sd_dif_tuple),
.tag_size = 0,
};
@@ -289,8 +226,6 @@ static struct blk_integrity dif_type3_integrity_ip = {
.name = "T10-DIF-TYPE3-IP",
.generate_fn = sd_dif_type3_generate_ip,
.verify_fn = sd_dif_type3_verify_ip,
.get_tag_fn = sd_dif_type3_get_tag,
.set_tag_fn = sd_dif_type3_set_tag,
.tuple_size = sizeof(struct sd_dif_tuple),
.tag_size = 0,
};