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download PDF document: ocs_fc.4.pdf

OCS_FC(4) FreeBSD Kernel Interfaces Manual OCS_FC(4)
NAME ocs_fc - Device driver for Emulex Fibre Channel Host Adapters
SYNOPSIS To compile this driver into the kernel, add this line to the kernel configuration file:
device ocs_fc
To load the driver as a module at boot, add this line to loader.conf(5):
ocs_fc_load="YES"
DESCRIPTION The ocs_fc driver provides access to Fibre Channel SCSI devices.
The ocs_fc driver supports initiator and target modes. Support is available for Arbitrated loops, Point-to-Point, and Fabric connections. FC-Tape is highly recommended for connections to tape drives that support it. FC-Tape includes four elements from the T-10 FCP-4 specification:
o Precise Delivery of Commands
o Confirmed Completion of FCP I/O Operations
o Retransmission of Unsuccessfully Transmitted IUs
o Task Retry Identification
Together these features allow for link level error recovery with tape devices. Without link level error recovery, an initiator cannot, for instance, tell whether a tape write command that has timed out resulted in all, part, or none of the data going to the tape drive. FC-Tape is automatically enabled when both the controller and target support it.
HARDWARE The ocs_fc driver supports these Fibre Channel adapters:
Emulex 16/8G FC GEN 5 HBAS
LPe15004 FC Host Bus Adapters LPe160XX FC Host Bus Adapters
Emulex 32/16G FC GEN 6 HBAS
LPe3100X FC Host Bus Adapters LPe3200X FC Host Bus Adapters
Emulex 64/32G FC GEN 7 HBAS
LPe3500X FC Host Bus Adapters
UPDATING FIRMWARE Adapter firmware updates are persistent.
Firmware can be updated by following these steps:

3. Copy the Makefile and GRP file to a local directory
4. Execute make and copy the generated ocsflash.ko file to /lib/modules
5. sysctl dev.ocs_fc.<N>.fw_upgrade=ocsflash
6. Check kernel messages regarding status of the operation
7. Reboot the machine
BOOT OPTIONS Options are controlled by setting values in /boot/device.hints.
They are:
hint.ocs_fc.N.initiator Enable initiator functionality. Default 1 (enabled), 0 to disable.
hint.ocs_fc.N.target Enable target functionality. Default 1 (enabled), 0 to disable.
hint.ocs_fc.N.topology Topology: 0 for Auto, 1 for NPort only, 2 for Loop only.
hint.ocs_fc.N.speed Link speed in megabits per second. Possible values include: 0 Auto-speed negotiation (default), 4000 (4GFC), 8000 (8GFC), 16000 (16GFC).
SYSCTL OPTIONS dev.ocs_fc.N.port_state Port state (read/write). Valid values are online and offline.
dev.ocs_fc.N.wwpn World Wide Port Name (read/write).
dev.ocs_fc.N.wwnn World Wide Node Name (read/write).
dev.ocs_fc.N.fwrev Firmware revision (read-only).
dev.ocs_fc.N.sn Adapter serial number (read-only).
dev.ocs_fc.N.configured_speed Configured Port Speed (read/write). Valid values are: 0 Auto- speed negotiation (default), 4000 (4GFC), 8000 (8GFC), 16000 (16GFC).
dev.ocs_fc.N.configured_topology Configured Port Topology (read/write). Valid values are: 0-Auto; 1-NPort; 2-Loop.
dev.ocs_fc.N.current_speed Current Port Speed (read-only).
SEE ALSO ifconfig(8)
AUTHORS The ocs_fc driver was written by Broadcom.
FreeBSD 14.0-RELEASE-p11 December 29, 2021 FreeBSD 14.0-RELEASE-p11