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Document undocumented tunables and sysctl variables.

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While here use actual string to specify width as well as using Cm
to set command argument.

Reviewed by:	brueffer
This commit is contained in:
yongari 2010-05-12 16:59:58 +00:00
parent 05f836c1c3
commit 54d41fb8aa
1 changed files with 52 additions and 13 deletions
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65
share/man/man4/fxp.4
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@ -25,7 +25,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd December 15, 2008
.Dd May 12, 2010
.Dt FXP 4
.Os
.Sh NAME
@ -62,23 +62,25 @@ except i82557, i82259ER and early i82558 revisions.
The
.Nm
driver supports the following media types:
.Pp
.Bl -tag -width xxxxxxxxxxxxxxxxxxxx
.It autoselect
Enable autoselection of the media type and options
.It 10baseT/UTP
Set 10Mbps operation
.It 100baseTX
Set 100Mbps (Fast Ethernet) operation
.Bl -tag -width "10baseT/UTP"
.It Cm autoselect
Enable autoselection of the media type and options.
The autoselected mode can be overridden by adding the media options to
.Xr rc.conf 5 .
.It Cm 10baseT/UTP
Set 10Mbps operation.
.It Cm 100baseTX
Set 100Mbps (Fast Ethernet) operation.
.El
.Pp
The
.Nm
driver supports the following media options:
.Pp
.Bl -tag -width xxxxxxxxxxxxxxxxxxxx
.It full-duplex
Set full duplex operation
.Bl -tag -width "full-duplex"
.It Cm full-duplex
Force full duplex operation.
.It Cm half-duplex
Force half duplex operation.
.El
.Pp
Note that 100baseTX media type is not available on the Pro/10.
@ -143,6 +145,43 @@ NEC PC-9821X-B06 (PC-98)
.It
Many on-board network interfaces on Intel motherboards
.El
.Sh LOADER TUNABLES
Tunables can be set at the
.Xr loader 8
prompt before booting the kernel or stored in
.Xr loader.conf 5 .
The following variables are available as both
.Xr loader 8
tunables and
.Xr sysctl 8
variables:
.Bl -tag -width "xxxxxx"
.It Va dev.fxp.%d.int_delay
Maximum amount of time, in microseconds, that an interrupt may
be delayed in an attempt to coalesce interrupts.
This is only effective if the Intel microcode is loaded.
The accepted range is 300 to 3000, the default is 1000.
.It Va dev.fxp.%d.bundle_max
Number of packets that will be bundled, before an interrupt is
generated.
This is only effective if the Intel microcode is loaded.
The accepted range is 1 to 65535, the default is 6.
.It Va dev.fxp.%d.noflow
Controls whether flow control should be used or not.
The default is 1 (no flow control).
.El
.Sh SYSCTL VARIABLES
The following variables are available as
.Xr sysctl 8
variables.
.Bl -tag -width "xxxxxx"
.It Va dev.fxp.%d.rnr
This is a read-only variable and shows the number of events of
RNR (resource not ready).
.It Va dev.fxp.%d.stats
This is a read-only variable and displays useful MAC counters
maintained in the driver.
.El
.Sh DIAGNOSTICS
.Bl -diag
.It "fxp%d: couldn't map memory"