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block: Consolidate static integrity profile properties

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We previously made a complete copy of a device's data integrity profile
even though several of the fields inside the blk_integrity struct are
pointers to fixed template entries in t10-pi.c.

Split the static and per-device portions so that we can reference the
template directly.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Reported-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Martin K. Petersen
2015-10-21 13:19:33 -04:00
committed by Jens Axboe
parent aff34e192e
commit 0f8087ecde
9 changed files with 65 additions and 64 deletions
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31
drivers/scsi/sd_dif.c
View File

@@ -43,6 +43,7 @@ void sd_dif_config_host(struct scsi_disk *sdkp)
struct scsi_device *sdp = sdkp->device;
struct gendisk *disk = sdkp->disk;
u8 type = sdkp->protection_type;
struct blk_integrity bi;
int dif, dix;
dif = scsi_host_dif_capable(sdp->host, type);
@@ -55,39 +56,43 @@ void sd_dif_config_host(struct scsi_disk *sdkp)
if (!dix)
return;
memset(&bi, 0, sizeof(bi));
/* Enable DMA of protection information */
if (scsi_host_get_guard(sdkp->device->host) & SHOST_DIX_GUARD_IP) {
if (type == SD_DIF_TYPE3_PROTECTION)
blk_integrity_register(disk, &t10_pi_type3_ip);
bi.profile = &t10_pi_type3_ip;
else
blk_integrity_register(disk, &t10_pi_type1_ip);
bi.profile = &t10_pi_type1_ip;
disk->integrity->flags |= BLK_INTEGRITY_IP_CHECKSUM;
bi.flags |= BLK_INTEGRITY_IP_CHECKSUM;
} else
if (type == SD_DIF_TYPE3_PROTECTION)
blk_integrity_register(disk, &t10_pi_type3_crc);
bi.profile = &t10_pi_type3_crc;
else
blk_integrity_register(disk, &t10_pi_type1_crc);
bi.profile = &t10_pi_type1_crc;
bi.tuple_size = sizeof(struct t10_pi_tuple);
sd_printk(KERN_NOTICE, sdkp,
"Enabling DIX %s protection\n", disk->integrity->name);
"Enabling DIX %s protection\n", bi.profile->name);
/* Signal to block layer that we support sector tagging */
if (dif && type) {
disk->integrity->flags |= BLK_INTEGRITY_DEVICE_CAPABLE;
bi.flags |= BLK_INTEGRITY_DEVICE_CAPABLE;
if (!sdkp->ATO)
return;
goto out;
if (type == SD_DIF_TYPE3_PROTECTION)
disk->integrity->tag_size = sizeof(u16) + sizeof(u32);
bi.tag_size = sizeof(u16) + sizeof(u32);
else
disk->integrity->tag_size = sizeof(u16);
bi.tag_size = sizeof(u16);
sd_printk(KERN_NOTICE, sdkp, "DIF application tag size %u\n",
disk->integrity->tag_size);
bi.tag_size);
}
out:
blk_integrity_register(disk, &bi);
}
/*