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3. Configuration
FC and FCoE Driver Configuration
Table 3-2 Dynamic FC and FCoE Driver Parameters (Continued)
Parameter
Description
lpfc_fcp_io_sched
For LPe16000 and LPe15000 series adapters using RHEL6.x/SLES11-SPx
drivers, determines which algorithm to use when scheduling an FCoE I/O to
an I/O channel. For more information, see “LPFC Driver Performance Tuning”
on page 55.
The default value is 0, configuration by round-robin scheduling. A value of 1
sets configuration to CPU scheduling.
For LPe12000, LPe11000, and LP11000 adapters, and for LPe16000 and
LPe15000 series adapters using RHEL5.x/SLES10-SPx drivers, this parameter
is not applicable and has no effect.
lpfc_fcp_imax
For OneConnect and LPe16000 and LPe15000 series adapters, specifies the
maximum number of fast-path FCP interrupts per second.
The minimum value is 636. The maximum value is 651042. The default value
is 10000.
Note: For LPe12000, LPe11000, and LP11000 adapters, this parameter is not
applicable and has no effect.
lpfc_fdmi_on
Specifies the type of FDMI support. The enabled values are 1 or 2 depending
on the type needed.
The disabled value is 0 (default).
lpfc_link_speed
Specifies the FC link speed. The possible values are:
• 0 = Auto-select (default)
• 1 = 1 Gb/s
• 2 = 2 Gb/s
• 4 = 4 Gb/s
• 8 = 8 Gb/s
• 16 = 16 Gb/s
Note: This parameter does not affect FCoE 10 Gb/s adapters.
lpfc_log_verbose
Specifies the log verbosity level of the messages posted by the driver. Extra
activity logging (bit mask).
The minimum value is 0x0 (default). The maximum value is 0xFFFFFFFF.
lpfc_nodev_tmo
(deprecated)
Note: This is a deprecated parameter and lpfc_devloss_tmo should be used
instead. This parameter will not work if you altered lpfc_devloss_tmo.
Specifies the number of seconds to hold an I/O error when a device
disappears.
The minimum value is 1. The maximum value is 255. The default value is 30.
lpfc_pci_max_read
Specifies the maximum DMA read byte count. The possible values are 512,
1024, 2048 (default), and 4096.
lpfc_poll
Sets the FCP ring polling mode control. The possible values are:
• 0 = no polling (default)
• 1 = poll with interrupts enabled
• 3 = poll and disable FCP ring interrupts
lpfc_poll_tmo
Specifies the number of milliseconds that the driver waits between polling
FCP ring interrupts.
The minimum value is 1. The maximum value is 255. The default value is 10.
Emulex Drivers for Linux User Manual
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