From: "Martin K. Petersen" <martin.petersen@xxxxxxxxxx> Allow user to selectively enable/disable DIF/DIX protection capabilities mask. Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx> Signed-off-by: Himanshu Madhani <hmadhani@xxxxxxxxxxx> --- drivers/scsi/qla2xxx/qla_os.c | 36 ++++++++++++++++++++++++++++-------- 1 file changed, 28 insertions(+), 8 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index f0ffb0e5c113..deb923058d08 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -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 */ @@ -3355,13 +3369,16 @@ 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; - scsi_host_set_prot(host, - prot | SHOST_DIF_TYPE1_PROTECTION - | SHOST_DIF_TYPE2_PROTECTION - | SHOST_DIF_TYPE3_PROTECTION - | SHOST_DIX_TYPE1_PROTECTION - | SHOST_DIX_TYPE2_PROTECTION - | SHOST_DIX_TYPE3_PROTECTION); + if (ql2xprotmask) + scsi_host_set_prot(host, ql2xprotmask); + else + scsi_host_set_prot(host, + prot | SHOST_DIF_TYPE1_PROTECTION + | SHOST_DIF_TYPE2_PROTECTION + | SHOST_DIF_TYPE3_PROTECTION + | SHOST_DIX_TYPE1_PROTECTION + | SHOST_DIX_TYPE2_PROTECTION + | SHOST_DIX_TYPE3_PROTECTION); guard = SHOST_DIX_GUARD_CRC; @@ -3369,7 +3386,10 @@ 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; - scsi_host_set_guard(host, guard); + if (ql2xprotguard) + scsi_host_set_guard(host, ql2xprotguard); + else + scsi_host_set_guard(host, guard); } else base_vha->flags.difdix_supported = 0; } -- 2.12.0
