Maxim Integrated 78Q8430 Linux Driver ARM Platform - Manual (Page 14)

78Q8430 Linux Driver ARM Platform User Guide UG_8430_008
14 Rev. 1.0
Q: Thresholds
Syntax:
8430-tool ethn -Q headroom [get|set value ]
highwater [get|set value ]
irqdelay [get|set value ]
txdivisor [get|set value ]
Description:
This command option causes the driver to display or set the headroom, watermark interrupt and RX
interrupt delay threshold values.
Operands:
headroom Keyword to display or specify how many queue buffers to hold as overflow
protection.
highwater Keyword to display or specify how many queue buffers are to be consumed before
a high watermark interrupt is generated.
irqdelay Keyword to display or specify the RX interrupt delay.
txdivisor Keyword to display or specify the TX completion frequency. The value is given by
the equation: value = (2^n -1), for n, from 0 to 6, inclusive. This gives a minimum
of 0 and a maximum of 63 (0x3F). TX completions are serviced on the completion
of this number of transmissions.
[get|set value] get displays the current value for the keyword it follows. set value specifies a new
value for the keyword it follows.
R: MAC Reset
Syntax:
8430-tool ethn -R
Description:
This command option causes the driver to reset the MAC, which in turn results in a reset of the
RX/TX Queues.
Operands:
None.
T: TCP Offload Engine (TOE)
Syntax:
8430-tool ethn -T on|off
Description:
This command option causes the driver to toggle TCP Offload Engine support for ICMP packets on
and off.
Operands:
on|off Toggles TOE offloading of ICMP packet processing on or off.