Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 0c30f421 authored by Nicholas Bellinger's avatar Nicholas Bellinger
Browse files

target/spc: Expose ATO bit in control mode page 



This patch updates spc_modesense_control() to set the Application
Tag Owner (ATO) bit when when DIF emulation is enabled by the
backend device.

Reviewed-by: default avatarMartin 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: default avatarNicholas Bellinger <nab@linux-iscsi.org>
parent 56dac14c

drivers/target/target_core_spc.c

+13 −0
Original line number Diff line number Diff line
@@ -858,6 +858,19 @@ static int spc_modesense_control(struct se_device *dev, u8 pc, u8 *p) 
	 * status (see SAM-4).

	 */

	p[5] = (dev->dev_attrib.emulate_tas) ? 0x40 : 0x00;

	/*

	 * From spc4r30, section 7.5.7 Control mode page

	 *

	 * Application Tag Owner (ATO) bit set to one.

	 *

	 * If the ATO bit is set to one the device server shall not modify the

	 * LOGICAL BLOCK APPLICATION TAG field and, depending on the protection

	 * type, shall not modify the contents of the LOGICAL BLOCK REFERENCE

	 * TAG field.

	 */

	if (dev->dev_attrib.pi_prot_type)

		p[5] |= 0x80;



	p[8] = 0xff;

	p[9] = 0xff;

	p[11] = 30;