target/spc: Add protection bit to standard INQUIRY output

This patch updates spc_emulate_inquiry_std() to set the
PROTECT bit when DIF emulation is enabled by the backend
device.

Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Sagi Grimberg <sagig@mellanox.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c
index 279d26062f69..4178c2a0f210 100644
--- a/drivers/target/target_core_spc.c
+++ b/drivers/target/target_core_spc.c
@@ -100,6 +100,11 @@ spc_emulate_inquiry_std(struct se_cmd *cmd, unsigned char *buf)
          */
         if (dev->dev_attrib.emulate_3pc)
                 buf[5] |= 0x8;
+        /*
+         * Set Protection (PROTECT) bit when DIF has been enabled.
+         */
+        if (dev->dev_attrib.pi_prot_type)
+                buf[5] |= 0x1;
 
         buf[7] = 0x2; /* CmdQue=1 */