diff options
Diffstat (limited to 'drivers/scsi/scsi_transport_fc.c')
| -rw-r--r-- | drivers/scsi/scsi_transport_fc.c | 50 |
1 files changed, 33 insertions, 17 deletions
diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c index 653f22a8deb..1d5b72173dd 100644 --- a/drivers/scsi/scsi_transport_fc.c +++ b/drivers/scsi/scsi_transport_fc.c @@ -475,7 +475,8 @@ MODULE_PARM_DESC(dev_loss_tmo, "Maximum number of seconds that the FC transport should" " insulate the loss of a remote port. Once this value is" " exceeded, the scsi target is removed. Value should be" - " between 1 and SCSI_DEVICE_BLOCK_MAX_TIMEOUT."); + " between 1 and SCSI_DEVICE_BLOCK_MAX_TIMEOUT if" + " fast_io_fail_tmo is not set."); /* * Netlink Infrastructure @@ -842,9 +843,17 @@ store_fc_rport_dev_loss_tmo(struct device *dev, struct device_attribute *attr, (rport->port_state == FC_PORTSTATE_NOTPRESENT)) return -EBUSY; val = simple_strtoul(buf, &cp, 0); - if ((*cp && (*cp != '\n')) || - (val < 0) || (val > SCSI_DEVICE_BLOCK_MAX_TIMEOUT)) + if ((*cp && (*cp != '\n')) || (val < 0)) return -EINVAL; + + /* + * If fast_io_fail is off we have to cap + * dev_loss_tmo at SCSI_DEVICE_BLOCK_MAX_TIMEOUT + */ + if (rport->fast_io_fail_tmo == -1 && + val > SCSI_DEVICE_BLOCK_MAX_TIMEOUT) + return -EINVAL; + i->f->set_rport_dev_loss_tmo(rport, val); return count; } @@ -925,9 +934,16 @@ store_fc_rport_fast_io_fail_tmo(struct device *dev, rport->fast_io_fail_tmo = -1; else { val = simple_strtoul(buf, &cp, 0); - if ((*cp && (*cp != '\n')) || - (val < 0) || (val >= rport->dev_loss_tmo)) + if ((*cp && (*cp != '\n')) || (val < 0)) + return -EINVAL; + /* + * Cap fast_io_fail by dev_loss_tmo or + * SCSI_DEVICE_BLOCK_MAX_TIMEOUT. + */ + if ((val >= rport->dev_loss_tmo) || + (val > SCSI_DEVICE_BLOCK_MAX_TIMEOUT)) return -EINVAL; + rport->fast_io_fail_tmo = val; } return count; @@ -1216,6 +1232,15 @@ store_fc_vport_delete(struct device *dev, struct device_attribute *attr, { struct fc_vport *vport = transport_class_to_vport(dev); struct Scsi_Host *shost = vport_to_shost(vport); + unsigned long flags; + + spin_lock_irqsave(shost->host_lock, flags); + if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) { + spin_unlock_irqrestore(shost->host_lock, flags); + return -EBUSY; + } + vport->flags |= FC_VPORT_DELETING; + spin_unlock_irqrestore(shost->host_lock, flags); fc_queue_work(shost, &vport->vport_delete_work); return count; @@ -1805,6 +1830,9 @@ store_fc_host_vport_delete(struct device *dev, struct device_attribute *attr, list_for_each_entry(vport, &fc_host->vports, peers) { if ((vport->channel == 0) && (vport->port_name == wwpn) && (vport->node_name == wwnn)) { + if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) + break; + vport->flags |= FC_VPORT_DELETING; match = 1; break; } @@ -3354,18 +3382,6 @@ fc_vport_terminate(struct fc_vport *vport) unsigned long flags; int stat; - spin_lock_irqsave(shost->host_lock, flags); - if (vport->flags & FC_VPORT_CREATING) { - spin_unlock_irqrestore(shost->host_lock, flags); - return -EBUSY; - } - if (vport->flags & (FC_VPORT_DEL)) { - spin_unlock_irqrestore(shost->host_lock, flags); - return -EALREADY; - } - vport->flags |= FC_VPORT_DELETING; - spin_unlock_irqrestore(shost->host_lock, flags); - if (i->f->vport_delete) stat = i->f->vport_delete(vport); else |