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| author | Michael Reed <mdr@sgi.com> | 2006-05-24 15:07:40 -0500 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2006-06-10 16:00:03 -0500 |
| commit | 419835e285c3e39cd62c8c8426da0aebea9cd89f (patch) | |
| tree | e550176245f09598ccf7ffff915524ff07d75c88 /drivers/message | |
| parent | ca2f938efe71ca48cbc689db4df8d4f04b5d8f07 (diff) | |
| download | linux-stable-419835e285c3e39cd62c8c8426da0aebea9cd89f.tar.gz linux-stable-419835e285c3e39cd62c8c8426da0aebea9cd89f.tar.bz2 linux-stable-419835e285c3e39cd62c8c8426da0aebea9cd89f.zip | |
[SCSI] mptfc: fix fibre channel infinite request/response loop
While doing board reset testing I was able to put the system in
an infinite request/response loop between the scsi layer and
mptscsih_qcmd() by aborting the reset. This patch installs
a "SETUP RESET" handler which calls fc_remote_port_delete()
for all registered rports. This blocks the target which
prevents the loop. Additionally, should the reset fail to
complete, the transport will now terminate i/o to the target.
Signed-off-by: Michael Reed <mdr@sgi.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/message')
| -rw-r--r-- | drivers/message/fusion/mptbase.h | 1 | ||||
| -rw-r--r-- | drivers/message/fusion/mptfc.c | 36 |
2 files changed, 35 insertions, 2 deletions
diff --git a/drivers/message/fusion/mptbase.h b/drivers/message/fusion/mptbase.h index 29f6b986946f..6d36ff5ee721 100644 --- a/drivers/message/fusion/mptbase.h +++ b/drivers/message/fusion/mptbase.h @@ -635,6 +635,7 @@ typedef struct _MPT_ADAPTER int num_ports; struct work_struct mptscsih_persistTask; + struct work_struct fc_setup_reset_work; struct list_head fc_rports; spinlock_t fc_rescan_work_lock; int fc_rescan_work_count; diff --git a/drivers/message/fusion/mptfc.c b/drivers/message/fusion/mptfc.c index 918aca0146ff..770df553047a 100644 --- a/drivers/message/fusion/mptfc.c +++ b/drivers/message/fusion/mptfc.c @@ -580,10 +580,10 @@ mptfc_qcmd(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) #ifdef DMPT_DEBUG_FC if (unlikely(err)) { dfcprintk ((MYIOC_s_INFO_FMT - "mptfc_qcmd.%d: %d:%d, mptscsih_qcmd returns non-zero.\n", + "mptfc_qcmd.%d: %d:%d, mptscsih_qcmd returns non-zero, (%x).\n", ((MPT_SCSI_HOST *) SCpnt->device->host->hostdata)->ioc->name, ((MPT_SCSI_HOST *) SCpnt->device->host->hostdata)->ioc->sh->host_no, - SCpnt->device->id,SCpnt->device->lun)); + SCpnt->device->id,SCpnt->device->lun,err)); } #endif return err; @@ -873,6 +873,31 @@ mptfc_init_host_attr(MPT_ADAPTER *ioc,int portnum) } static void +mptfc_setup_reset(void *arg) +{ + MPT_ADAPTER *ioc = (MPT_ADAPTER *)arg; + u64 pn; + struct mptfc_rport_info *ri; + + /* reset about to happen, delete (block) all rports */ + list_for_each_entry(ri, &ioc->fc_rports, list) { + if (ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED) { + ri->flags &= ~MPT_RPORT_INFO_FLAGS_REGISTERED; + fc_remote_port_delete(ri->rport); /* won't sleep */ + ri->rport = NULL; + + pn = (u64)ri->pg0.WWPN.High << 32 | + (u64)ri->pg0.WWPN.Low; + dfcprintk ((MYIOC_s_INFO_FMT + "mptfc_setup_reset.%d: %llx deleted\n", + ioc->name, + ioc->sh->host_no, + (unsigned long long)pn)); + } + } +} + +static void mptfc_rescan_devices(void *arg) { MPT_ADAPTER *ioc = (MPT_ADAPTER *)arg; @@ -999,6 +1024,7 @@ mptfc_probe(struct pci_dev *pdev, const struct pci_device_id *id) spin_lock_init(&ioc->fc_rescan_work_lock); INIT_WORK(&ioc->fc_rescan_work, mptfc_rescan_devices,(void *)ioc); + INIT_WORK(&ioc->fc_setup_reset_work, mptfc_setup_reset, (void *)ioc); spin_lock_irqsave(&ioc->FreeQlock, flags); @@ -1221,6 +1247,12 @@ mptfc_ioc_reset(MPT_ADAPTER *ioc, int reset_phase) reset_phase==MPT_IOC_PRE_RESET ? "pre" : "post"))); if (reset_phase == MPT_IOC_SETUP_RESET) { + spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags); + if (ioc->fc_rescan_work_q) { + queue_work(ioc->fc_rescan_work_q, + &ioc->fc_setup_reset_work); + } + spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags); } else if (reset_phase == MPT_IOC_PRE_RESET) { |