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| author | Martin K. Petersen <martin.petersen@oracle.com> | 2018-12-21 20:33:44 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-01-12 06:03:22 +0300 |
| commit | 7855d2ba1172d716d96a628af7c5bafa5725ac57 (patch) | |
| tree | bc404d8e5fa50bcd2e90031e5510a5b41f8d3709 /drivers/scsi/qla2xxx | |
| parent | 4edff70494e4c7c4371270a7b0b56b2776adc0ee (diff) | |
| download | linux-7855d2ba1172d716d96a628af7c5bafa5725ac57.tar.xz | |
scsi: qla2xxx: Add protection mask module parameters
Allow user to selectively enable/disable DIF/DIX protection
capabilities mask.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/qla2xxx')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_os.c | 36 |
1 files changed, 28 insertions, 8 deletions
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index ea69dafc9774..3a4f68f40057 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 */ @@ -3342,13 +3356,16 @@ skip_dpc: "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; @@ -3356,7 +3373,10 @@ skip_dpc: (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; } |