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share/man/man4/ixl.4
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Enabled by default. | Enabled by default. | ||||
.It Va hw.ixl.enable_head_writeback | .It Va hw.ixl.enable_head_writeback | ||||
When the driver is finding the last TX descriptor processed by the hardware, | When the driver is finding the last TX descriptor processed by the hardware, | ||||
use a value written to memory by the hardware instead of scanning the | use a value written to memory by the hardware instead of scanning the | ||||
descriptor ring for completed descriptors. | descriptor ring for completed descriptors. | ||||
Enabled by default; disable to mimic the TX behavior found in | Enabled by default; disable to mimic the TX behavior found in | ||||
.Xr ixgbe 4 . | .Xr ixgbe 4 . | ||||
.El | .El | ||||
.Sh SYSCTL PROCEDURES | .Sh SYSCTL VARIABLES | ||||
.Bl -tag -width indent | .Bl -tag -width indent | ||||
.It Va dev.ixl.#.fc | .It Va dev.ixl.#.fc | ||||
Sets the 802.3x flow control mode that the adapter will advertise on the link. | Sets the 802.3x flow control mode that the adapter will advertise on the link. | ||||
A value of 0 disables flow control, 3 enables full, 1 is RX, and 2 is TX pause. | A value of 0 disables flow control, 3 enables full, 1 is RX, and 2 is TX pause. | ||||
.Pp | .Pp | ||||
The negotiated flow control setting can be viewed in | The negotiated flow control setting can be viewed in | ||||
.Xr ifconfig 8 , | .Xr ifconfig 8 , | ||||
in the interface's media field. | in the interface's media field. | ||||
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