diff options
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_attr.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_attr.c | 155 |
1 files changed, 127 insertions, 28 deletions
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c index c6d683d..0de6932 100644 --- a/drivers/scsi/lpfc/lpfc_attr.c +++ b/drivers/scsi/lpfc/lpfc_attr.c @@ -39,6 +39,9 @@ #include "lpfc_compat.h" #include "lpfc_crtn.h" +#define LPFC_DEF_DEVLOSS_TMO 30 +#define LPFC_MIN_DEVLOSS_TMO 1 +#define LPFC_MAX_DEVLOSS_TMO 255 static void lpfc_jedec_to_ascii(int incr, char hdw[]) @@ -559,6 +562,123 @@ static CLASS_DEVICE_ATTR(lpfc_poll, S_IRUGO | S_IWUSR, lpfc_poll_show, lpfc_poll_store); /* +# lpfc_nodev_tmo: If set, it will hold all I/O errors on devices that disappear +# until the timer expires. Value range is [0,255]. Default value is 30. +*/ +static int lpfc_nodev_tmo = LPFC_DEF_DEVLOSS_TMO; +static int lpfc_devloss_tmo = LPFC_DEF_DEVLOSS_TMO; +module_param(lpfc_nodev_tmo, int, 0); +MODULE_PARM_DESC(lpfc_nodev_tmo, + "Seconds driver will hold I/O waiting " + "for a device to come back"); +static ssize_t +lpfc_nodev_tmo_show(struct class_device *cdev, char *buf) +{ + struct Scsi_Host *host = class_to_shost(cdev); + struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata; + int val = 0; + val = phba->cfg_devloss_tmo; + return snprintf(buf, PAGE_SIZE, "%d\n", + phba->cfg_devloss_tmo); +} + +static int +lpfc_nodev_tmo_init(struct lpfc_hba *phba, int val) +{ + static int warned; + if (phba->cfg_devloss_tmo != LPFC_DEF_DEVLOSS_TMO) { + phba->cfg_nodev_tmo = phba->cfg_devloss_tmo; + if (!warned && val != LPFC_DEF_DEVLOSS_TMO) { + warned = 1; + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "%d:0402 Ignoring nodev_tmo module " + "parameter because devloss_tmo is" + " set.\n", + phba->brd_no); + } + return 0; + } + + if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) { + phba->cfg_nodev_tmo = val; + phba->cfg_devloss_tmo = val; + return 0; + } + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "%d:0400 lpfc_nodev_tmo attribute cannot be set to %d, " + "allowed range is [%d, %d]\n", + phba->brd_no, val, + LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO); + phba->cfg_nodev_tmo = LPFC_DEF_DEVLOSS_TMO; + return -EINVAL; +} + +static int +lpfc_nodev_tmo_set(struct lpfc_hba *phba, int val) +{ + if (phba->dev_loss_tmo_changed || + (lpfc_devloss_tmo != LPFC_DEF_DEVLOSS_TMO)) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "%d:0401 Ignoring change to nodev_tmo " + "because devloss_tmo is set.\n", + phba->brd_no); + return 0; + } + + if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) { + phba->cfg_nodev_tmo = val; + phba->cfg_devloss_tmo = val; + return 0; + } + + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "%d:0403 lpfc_nodev_tmo attribute cannot be set to %d, " + "allowed range is [%d, %d]\n", + phba->brd_no, val, LPFC_MIN_DEVLOSS_TMO, + LPFC_MAX_DEVLOSS_TMO); + return -EINVAL; +} + +lpfc_param_store(nodev_tmo) + +static CLASS_DEVICE_ATTR(lpfc_nodev_tmo, S_IRUGO | S_IWUSR, + lpfc_nodev_tmo_show, lpfc_nodev_tmo_store); + +/* +# lpfc_devloss_tmo: If set, it will hold all I/O errors on devices that +# disappear until the timer expires. Value range is [0,255]. Default +# value is 30. +*/ +module_param(lpfc_devloss_tmo, int, 0); +MODULE_PARM_DESC(lpfc_devloss_tmo, + "Seconds driver will hold I/O waiting " + "for a device to come back"); +lpfc_param_init(devloss_tmo, LPFC_DEF_DEVLOSS_TMO, + LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO) +lpfc_param_show(devloss_tmo) +static int +lpfc_devloss_tmo_set(struct lpfc_hba *phba, int val) +{ + if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) { + phba->cfg_nodev_tmo = val; + phba->cfg_devloss_tmo = val; + phba->dev_loss_tmo_changed = 1; + return 0; + } + + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "%d:0404 lpfc_devloss_tmo attribute cannot be set to" + " %d, allowed range is [%d, %d]\n", + phba->brd_no, val, LPFC_MIN_DEVLOSS_TMO, + LPFC_MAX_DEVLOSS_TMO); + return -EINVAL; +} + +lpfc_param_store(devloss_tmo) +static CLASS_DEVICE_ATTR(lpfc_devloss_tmo, S_IRUGO | S_IWUSR, + lpfc_devloss_tmo_show, lpfc_devloss_tmo_store); + +/* # lpfc_log_verbose: Only turn this flag on if you are willing to risk being # deluged with LOTS of information. # You can set a bit mask to record specific types of verbose messages: @@ -617,14 +737,6 @@ LPFC_ATTR_R(scan_down, 1, 0, 1, "Start scanning for devices from highest ALPA to lowest"); /* -# lpfc_nodev_tmo: If set, it will hold all I/O errors on devices that disappear -# until the timer expires. Value range is [0,255]. Default value is 30. -# NOTE: this MUST be less then the SCSI Layer command timeout - 1. -*/ -LPFC_ATTR_RW(nodev_tmo, 30, 0, 255, - "Seconds driver will hold I/O waiting for a device to come back"); - -/* # lpfc_topology: link topology for init link # 0x0 = attempt loop mode then point-to-point # 0x01 = internal loopback mode @@ -737,6 +849,7 @@ struct class_device_attribute *lpfc_host_attrs[] = { &class_device_attr_lpfc_lun_queue_depth, &class_device_attr_lpfc_hba_queue_depth, &class_device_attr_lpfc_nodev_tmo, + &class_device_attr_lpfc_devloss_tmo, &class_device_attr_lpfc_fcp_class, &class_device_attr_lpfc_use_adisc, &class_device_attr_lpfc_ack0, @@ -1450,27 +1563,12 @@ lpfc_get_starget_port_name(struct scsi_target *starget) } static void -lpfc_get_rport_loss_tmo(struct fc_rport *rport) -{ - /* - * Return the driver's global value for device loss timeout plus - * five seconds to allow the driver's nodev timer to run. - */ - rport->dev_loss_tmo = lpfc_nodev_tmo + 5; -} - -static void lpfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout) { - /* - * The driver doesn't have a per-target timeout setting. Set - * this value globally. lpfc_nodev_tmo should be greater then 0. - */ if (timeout) - lpfc_nodev_tmo = timeout; + rport->dev_loss_tmo = timeout; else - lpfc_nodev_tmo = 1; - rport->dev_loss_tmo = lpfc_nodev_tmo + 5; + rport->dev_loss_tmo = 1; } @@ -1532,7 +1630,6 @@ struct fc_function_template lpfc_transport_functions = { .show_rport_maxframe_size = 1, .show_rport_supported_classes = 1, - .get_rport_dev_loss_tmo = lpfc_get_rport_loss_tmo, .set_rport_dev_loss_tmo = lpfc_set_rport_loss_tmo, .show_rport_dev_loss_tmo = 1, @@ -1546,6 +1643,8 @@ struct fc_function_template lpfc_transport_functions = { .show_starget_port_name = 1, .issue_fc_host_lip = lpfc_issue_lip, + .dev_loss_tmo_callbk = lpfc_dev_loss_tmo_callbk, + .terminate_rport_io = lpfc_terminate_rport_io, }; void @@ -1561,13 +1660,13 @@ lpfc_get_cfgparam(struct lpfc_hba *phba) lpfc_ack0_init(phba, lpfc_ack0); lpfc_topology_init(phba, lpfc_topology); lpfc_scan_down_init(phba, lpfc_scan_down); - lpfc_nodev_tmo_init(phba, lpfc_nodev_tmo); lpfc_link_speed_init(phba, lpfc_link_speed); lpfc_fdmi_on_init(phba, lpfc_fdmi_on); lpfc_discovery_threads_init(phba, lpfc_discovery_threads); lpfc_max_luns_init(phba, lpfc_max_luns); lpfc_poll_tmo_init(phba, lpfc_poll_tmo); - + lpfc_devloss_tmo_init(phba, lpfc_devloss_tmo); + lpfc_nodev_tmo_init(phba, lpfc_nodev_tmo); phba->cfg_poll = lpfc_poll; /* |