From: Nicholas Bellinger <n...@linux-iscsi.org>

This patch updates sbc_emulate_readcapacity_16() to set
P_TYPE and PROT_EN bits when DIF emulation is enabled by
the backend device.

Reviewed-by: Martin K. Petersen <martin.peter...@oracle.com>
Cc: Christoph Hellwig <h...@lst.de>
Cc: Hannes Reinecke <h...@suse.de>
Cc: Sagi Grimberg <sa...@mellanox.com>
Cc: Or Gerlitz <ogerl...@mellanox.com>
Signed-off-by: Nicholas Bellinger <n...@linux-iscsi.org>
---
 drivers/target/target_core_sbc.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c
index 26e8bfb..75364c7 100644
--- a/drivers/target/target_core_sbc.c
+++ b/drivers/target/target_core_sbc.c
@@ -106,6 +106,11 @@ sbc_emulate_readcapacity_16(struct se_cmd *cmd)
        buf[9] = (dev->dev_attrib.block_size >> 16) & 0xff;
        buf[10] = (dev->dev_attrib.block_size >> 8) & 0xff;
        buf[11] = dev->dev_attrib.block_size & 0xff;
+       /*
+        * Set P_TYPE and PROT_EN bits for DIF support
+        */
+       if (dev->dev_attrib.pi_prot_type)
+               buf[12] = (dev->dev_attrib.pi_prot_type - 1) << 1 | 0x1;
 
        if (dev->transport->get_lbppbe)
                buf[13] = dev->transport->get_lbppbe(dev) & 0x0f;
-- 
1.7.10.4

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