Configuring FCoE Hardware Offload

The following four tunables can be used to reduce CPU utilization and improve performance on a system with FCoE ports. These tunables are supported by the Intel 10 Gb Ethernet devices and can set in the ixgbe.conf file.

Copy the /kernel/drv/ixgbe.conf to /etc/driver/drv/ixgbe.conf and modify the tunable values for your FCoE environment.

Table 7-1 FCoE Hardware Offload Tunable Parameters

Tunable Parameter	Description	Range	Default Value
`fcoe_txcrc_enable`	Controls whether the `ixgbe` driver offloads FC CRC transactions for transmitted FCoE packets.	0 – Disable FC CRC transaction offload 1 – Enable FC CRC transaction offload	1
`fcoe_lso_enable`	Controls whether the `ixgbe` driver offloads FC large send transactions for transmitted FCoE packets.	0 – Disable FC LSO transaction offload 1 – Enable FC LSO transaction offload	1
`fcoe_rxcrc_enable`	Controls whether the `ixgbe` driver offloads RC CRC transactions for received FCoE packets.	0 – Disable FC RX CRC transaction offload 1 – Enable FC RX CRC transaction offload	1
`fcoe_lro_enable`	Controls whether the `ixgbe` driver offloads FC large receive transactions for received FCoE packets.	0 – Disable FC LRO transaction offload 1 – Enable FC LRO transaction offload	0

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