| Main index | Section 4 | Options |
Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):
if_et_load="YES"
The et driver supports the following media types:
| autoselect |
Enable autoselection of the media types and options.
The user can manually override
the autoselected mode by adding media options to the
/etc/rc.conf
file.
|
| 10baseT/UTP | |
|
Set 10Mbps operation.
The
mediaopt
option can also be used to select either
full-duplex
or
half-duplex
modes.
| |
| 100baseTX |
Set 100Mbps (Fast Ethernet) operation.
The
mediaopt
option can also be used to select either
full-duplex
or
half-duplex
modes.
|
| 1000baseT | Set 1000Mbps (Gigabit Ethernet) operation. The mediaopt option can only be set to full-duplex mode. |
The et driver supports the following media options:
| full-duplex | |
|
Force full-duplex operation.
| |
| half-duplex | |
| Force half-duplex operation. | |
Note that the 1000baseT media type is only available if it is supported by the adapter. For more information on configuring this device, see ifconfig(8).
| hw.et.rx_intr_npkts | |
| This value controls how many packets should be received before a receive interrupt is generated. The default value is 32. It is recommended to set this value above 38 to prevent the host from being livelocked under a high degree of stress. | |
| hw.et.rx_intr_delay | |
| This value delays the generation of receive interrupts in units of ~4 microseconds. It is used together with hw.et.rx_intr_npkts to achieve RX interrupt moderation. The default value is 20. | |
| hw.et.tx_intr_nsegs | |
| This value controls how many segments (not packets) should be transmitted before a transmit interrupt is generated. The default value is 126. It is recommended to set this value below 280 to prevent the TX ring from underflowing. | |
| hw.et.timer | |
| This value controls how often a timer interrupt should be generated. It is used together with hw.et.tx_intr_nsegs to achieve TX interrupt moderation. The default value is 1000000000 (nanoseconds). | |
| ET (4) | December 9, 2011 |
| Main index | Section 4 | Options |
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