Users Guide

7–Linux Driver Software
Setting Values for Optional Properties
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sq_size
Use Configure SQ size to choose send queue size for offloaded connections and
SQ size determines the maximum SCSI commands that can be queued. SQ size
also has a bearing on the quantity of connections that can be offloaded; as QP
size increases, the quantity of connections supported decreases. With the default
values, the BCM5708 adapters can offload 28 connections.
Default: 128
Range: 32 to 128
Note that QLogic validation is limited to a power of 2; for example, 32, 64, and
128.
rq_size
Use Configure RQ size to choose the size of asynchronous buffer queue size per
offloaded connections. RQ size is not required greater than 16 as it is used to
place iSCSI ASYNC/NOP/REJECT messages and SCSI sense data.
Default: 16
Range: 16 to 32
Note that QLogic validation is limited to a power of 2; for example, 16 or 32.
event_coal_div
Event Coalescing Divide Factor is a performance-tuning parameter used to
moderate the rate of interrupt generation by the iSCSI firmware.
Default: 2
Valid values: 1, 2, 4, 8
last_active_tcp_port
Last active TCP port used is a status parameter used to indicate the last TCP
port number used in the iSCSI offload connection.
Default: N/A
Valid values: N/A
Note: This parameter is read-only.