Commit 7855d2ba authored by Martin K. Petersen's avatar Martin K. Petersen
Browse files

scsi: qla2xxx: Add protection mask module parameters 



Allow user to selectively enable/disable DIF/DIX protection
capabilities mask.

Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: default avatarHimanshu Madhani <hmadhani@marvell.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 4edff704

drivers/scsi/qla2xxx/qla_os.c

+28 −8
Original line number Diff line number Diff line
@@ -285,6 +285,20 @@ MODULE_PARM_DESC(qla2xuseresexchforels, 
		 "Reserve 1/2 of emergency exchanges for ELS.\n"

		 " 0 (default): disabled");



int ql2xprotmask;

module_param(ql2xprotmask, int, 0644);

MODULE_PARM_DESC(ql2xprotmask,

		 "Override DIF/DIX protection capabilities mask\n"

		 "Default is 0 which sets protection mask based on "

		 "capabilities reported by HBA firmware.\n");



int ql2xprotguard;

module_param(ql2xprotguard, int, 0644);

MODULE_PARM_DESC(ql2xprotguard, "Override choice of DIX checksum\n"

		 "  0 -- Let HBA firmware decide\n"

		 "  1 -- Force T10 CRC\n"

		 "  2 -- Force IP checksum\n");



/*

 * SCSI host template entry points

 */
@@ -3342,6 +3356,9 @@ skip_dpc: 
			    "Registering for DIF/DIX type 1 and 3 protection.\n");

			if (ql2xenabledif == 1)

				prot = SHOST_DIX_TYPE0_PROTECTION;

			if (ql2xprotmask)

				scsi_host_set_prot(host, ql2xprotmask);

			else

				scsi_host_set_prot(host,

				    prot | SHOST_DIF_TYPE1_PROTECTION

				    | SHOST_DIF_TYPE2_PROTECTION
@@ -3356,6 +3373,9 @@ skip_dpc: 
			    (ql2xenabledif > 1 || IS_PI_DIFB_DIX0_CAPABLE(ha)))

				guard |= SHOST_DIX_GUARD_IP;



			if (ql2xprotguard)

				scsi_host_set_guard(host, ql2xprotguard);

			else

				scsi_host_set_guard(host, guard);

		} else

			base_vha->flags.difdix_supported = 0;

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