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

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
......@@ -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 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
"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 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
(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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