bge loader tunables

[Igor Sysoev]

The attached patch creates the following bge loader tunables:

hw.bge.rxd=512

Number of standard receive descriptors allocated by the driver.
The default value is 256. The maximum value is 512.

hw.bge.rx_int_delay=500

This value delays the generation of receive interrupts in microseconds.
The default value is 150 microseconds.

hw.bge.tx_int_delay=500

This value delays the generation of transmit interrupts in microseconds.
The default value is 150 microseconds.

hw.bge.rx_coal_desc=64

This value delays the generation of receive interrupts until specified
number of packets will be received. The default value is 10.

hw.bge.tx_coal_desc=128

This value delays the generation of transmit interrupts until specified
number of packets will be transmited. The default value is 10.


-- 
Igor Sysoev
http://sysoev.ru/en/
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