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GigMAC-PMC and PCI
GigPMC Switch Board and Driver Users Manual
DSS NETWORKS, INC. Version: 2.6 Page: 32
‘Insmod’ Command Line Parameters
The following parameters are used by entering them on the command line with the
modprobe or insmod command. For example, with Intel based card model (ex. 5262,
5164, etc.) entering:
insmod dpm [ChipSelector=1] IntrHoldOff=0
loads the dpm driver setting it for Intel chipset and setting the Interrupt Holdoff latency to
zero (disabled).
Parameter Name
Valid
Range/Settings
Default Description
SetAutoNeg
0,1 1
This parameter specifies the enabling of auto
negotiation.
DuplexMode
0,1,2
(0=half, 1=full,
2=both)
1
Defines the direction in which data is allowed to
flow. Can be either one or two-directional. If both.
If auto negotiation is enabled, defines modes
advertised. If auto negotiation is disabled sets
duplex to this value.
PauseFlowEn
0, 1 1
This parameter enables or disables pause frame
flow control (typically enabled).
IntrHoldOff
0, 1 or 2 (0=off) 1
This value delays the generation of receive
interrupts in units of 100 microseconds. Receive
interrupt reduction can improve CPU efficiency if
properly tuned for specific network traffic.
Increasing this value adds extra latency to frame
reception and if set too high could decrease the
throughput of TCP traffic.
MediaSpeed
10, 100, 1000 1000
If auto negotiation id disabled, speed forces the
line speed to the specified value in megabits per
second (Mbps). If auto negotiation is enabled,
sets the highest speed advertised.
(adapters using copper connections only)
NumBufDescs
80 - 4096 256
This value is the number of transmit and receive
descriptors allocated by the driver. Increasing
this value allows the driver to queue more
transmit and receive buffers. Each descriptor is
16 bytes.
MaxMtuSize
1500-9600 1500
This value is the maximum mtu size supported in
the driver.
MaxBufferSize
2048, 4096,
8192, 16384
2048
Sets the maximum buffer size supported in the
driver.
AccAllUni
0, 1 0 Setting this parameter to one instructs the driver