diff options
| author | James Smart <james.smart@emulex.com> | 2012-10-31 14:44:42 -0400 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2012-11-27 08:59:44 +0400 |
| commit | a6571c6ebad15d04e8312e71b0ed17675ea4f6b3 (patch) | |
| tree | 77aaad614f3625c78bf483a0e80496162a1b4913 | |
| parent | c71ab8616d62d8d857c438f058839d9a0282e64c (diff) | |
[SCSI] lpfc 8.3.36: Fix bug with Target Resets and FCP2 devices
Fix bug with Target Resets and FCP2 devices
Create module parameter to disable Target Reset on FCP-Tape devices
when a "bus reset" is requested. Default is to reset all devices on
bus reset.
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| -rw-r--r-- | drivers/scsi/lpfc/lpfc.h | 1 | ||||
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_attr.c | 12 | ||||
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_scsi.c | 3 |
3 files changed, 16 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h index d0ed6c19a9a..df4c13a5534 100644 --- a/drivers/scsi/lpfc/lpfc.h +++ b/drivers/scsi/lpfc/lpfc.h @@ -689,6 +689,7 @@ struct lpfc_hba { #define LPFC_FCF_PRIORITY 2 /* Priority fcf failover */ uint32_t cfg_fcf_failover_policy; uint32_t cfg_fcp_io_sched; + uint32_t cfg_fcp2_no_tgt_reset; uint32_t cfg_cr_delay; uint32_t cfg_cr_count; uint32_t cfg_multi_ring_support; diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c index a71c7ebe7b7..a364cae9e98 100644 --- a/drivers/scsi/lpfc/lpfc_attr.c +++ b/drivers/scsi/lpfc/lpfc_attr.c @@ -3859,6 +3859,16 @@ LPFC_ATTR_RW(fcp_io_sched, 0, 0, 1, "Determine scheduling algrithmn for " "issuing commands [0] - Round Robin, [1] - Current CPU"); /* +# lpfc_fcp2_no_tgt_reset: Determine bus reset behavior +# range is [0,1]. Default value is 0. +# For [0], bus reset issues target reset to ALL devices +# For [1], bus reset issues target reset to non-FCP2 devices +*/ +LPFC_ATTR_RW(fcp2_no_tgt_reset, 0, 0, 1, "Determine bus reset behavior for " + "FCP2 devices [0] - issue tgt reset, [1] - no tgt reset"); + + +/* # lpfc_cr_delay & lpfc_cr_count: Default values for I/O colaesing # cr_delay (msec) or cr_count outstanding commands. cr_delay can take # value [0,63]. cr_count can take value [1,255]. Default value of cr_delay @@ -4100,6 +4110,7 @@ struct device_attribute *lpfc_hba_attrs[] = { &dev_attr_lpfc_scan_down, &dev_attr_lpfc_link_speed, &dev_attr_lpfc_fcp_io_sched, + &dev_attr_lpfc_fcp2_no_tgt_reset, &dev_attr_lpfc_cr_delay, &dev_attr_lpfc_cr_count, &dev_attr_lpfc_multi_ring_support, @@ -5091,6 +5102,7 @@ void lpfc_get_cfgparam(struct lpfc_hba *phba) { lpfc_fcp_io_sched_init(phba, lpfc_fcp_io_sched); + lpfc_fcp2_no_tgt_reset_init(phba, lpfc_fcp2_no_tgt_reset); lpfc_cr_delay_init(phba, lpfc_cr_delay); lpfc_cr_count_init(phba, lpfc_cr_count); lpfc_multi_ring_support_init(phba, lpfc_multi_ring_support); diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c index 7f45ac9964a..fd2ff5a9e18 100644 --- a/drivers/scsi/lpfc/lpfc_scsi.c +++ b/drivers/scsi/lpfc/lpfc_scsi.c @@ -4914,6 +4914,9 @@ lpfc_bus_reset_handler(struct scsi_cmnd *cmnd) list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { if (!NLP_CHK_NODE_ACT(ndlp)) continue; + if (vport->phba->cfg_fcp2_no_tgt_reset && + (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE)) + continue; if (ndlp->nlp_state == NLP_STE_MAPPED_NODE && ndlp->nlp_sid == i && ndlp->rport) { |