diff options
| author | andrew.vasquez@qlogic.com <andrew.vasquez@qlogic.com> | 2006-01-14 01:05:58 (GMT) |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.(none)> | 2006-01-14 16:55:39 (GMT) |
| commit | 79f89a4296ff22f09baf538d4ff2a6d0c3097a73 (patch) | |
| tree | e57901e45a0da996bde0c583560265b0913ebd69 | |
| parent | fdd52dfa3c311a2583850a2fbea99f329be861d7 (diff) | |
| download | linux-fsl-qoriq-79f89a4296ff22f09baf538d4ff2a6d0c3097a73.tar.xz | |
[SCSI] qla2xxx: Disable port-type RSCN handling via driver state-machine.
Given the semantic changes in both the device-model and
fc-transport APIs, the driver's handling of port-type RSCNs
via a series of ADISCs and PLOGIs can cause series of
badness ranging from unexpectedly device loss to devices not
being discovered.
In the interim, disable (via a module-parameter) this
feature and allow RSCN management to continue to occur
within the driver's DPC thread.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_gbl.h | 1 | ||||
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_init.c | 3 | ||||
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_isr.c | 3 | ||||
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_os.c | 6 |
4 files changed, 11 insertions, 2 deletions
diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h index 7872c11..32be4c1 100644 --- a/drivers/scsi/qla2xxx/qla_gbl.h +++ b/drivers/scsi/qla2xxx/qla_gbl.h @@ -62,6 +62,7 @@ extern int qlport_down_retry; extern int ql2xplogiabsentdevice; extern int ql2xloginretrycount; extern int ql2xfdmienable; +extern int ql2xprocessrscn; extern void qla2x00_sp_compl(scsi_qla_host_t *, srb_t *); diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index 8635bd1..a91fea6 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -2653,7 +2653,8 @@ qla2x00_device_resync(scsi_qla_host_t *ha) switch (format) { case 0: - if (!IS_QLA2100(ha) && !IS_QLA2200(ha) && + if (ql2xprocessrscn && + !IS_QLA2100(ha) && !IS_QLA2200(ha) && !IS_QLA6312(ha) && !IS_QLA6322(ha) && !IS_QLA24XX(ha) && !IS_QLA25XX(ha) && ha->flags.init_done) { diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c index 8a539dd..f63af08 100644 --- a/drivers/scsi/qla2xxx/qla_isr.c +++ b/drivers/scsi/qla2xxx/qla_isr.c @@ -519,7 +519,8 @@ qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb) * us, create a new entry in our rscn fcports list and handle * the event like an RSCN. */ - if (!IS_QLA2100(ha) && !IS_QLA2200(ha) && !IS_QLA6312(ha) && + if (ql2xprocessrscn && + !IS_QLA2100(ha) && !IS_QLA2200(ha) && !IS_QLA6312(ha) && !IS_QLA6322(ha) && !IS_QLA24XX(ha) && !IS_QLA25XX(ha) && ha->flags.init_done && mb[1] != 0xffff && ((ha->operating_mode == P2P && mb[1] != 0) || diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index 2430430..4916847 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -71,6 +71,12 @@ MODULE_PARM_DESC(ql2xfdmienable, "Enables FDMI registratons " "Default is 0 - no FDMI. 1 - perfom FDMI."); +int ql2xprocessrscn; +module_param(ql2xprocessrscn, int, S_IRUGO|S_IRUSR); +MODULE_PARM_DESC(ql2xprocessrscn, + "Option to enable port RSCN handling via a series of less" + "fabric intrusive ADISCs and PLOGIs."); + /* * SCSI host template entry points */ |