diff options
Diffstat (limited to 'drivers/scsi/sd.c')
| -rw-r--r-- | drivers/scsi/sd.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 57d1e3e1bd4..b9ab3a590e4 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -259,6 +259,28 @@ sd_show_protection_type(struct device *dev, struct device_attribute *attr, } static ssize_t +sd_show_protection_mode(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct scsi_disk *sdkp = to_scsi_disk(dev); + struct scsi_device *sdp = sdkp->device; + unsigned int dif, dix; + + dif = scsi_host_dif_capable(sdp->host, sdkp->protection_type); + dix = scsi_host_dix_capable(sdp->host, sdkp->protection_type); + + if (!dix && scsi_host_dix_capable(sdp->host, SD_DIF_TYPE0_PROTECTION)) { + dif = 0; + dix = 1; + } + + if (!dif && !dix) + return snprintf(buf, 20, "none\n"); + + return snprintf(buf, 20, "%s%u\n", dix ? "dix" : "dif", dif); +} + +static ssize_t sd_show_app_tag_own(struct device *dev, struct device_attribute *attr, char *buf) { @@ -285,6 +307,7 @@ static struct device_attribute sd_disk_attrs[] = { __ATTR(manage_start_stop, S_IRUGO|S_IWUSR, sd_show_manage_start_stop, sd_store_manage_start_stop), __ATTR(protection_type, S_IRUGO, sd_show_protection_type, NULL), + __ATTR(protection_mode, S_IRUGO, sd_show_protection_mode, NULL), __ATTR(app_tag_own, S_IRUGO, sd_show_app_tag_own, NULL), __ATTR(thin_provisioning, S_IRUGO, sd_show_thin_provisioning, NULL), __ATTR_NULL, |