diff options
author | yongari <yongari@FreeBSD.org> | 2009-12-17 18:37:11 +0000 |
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committer | yongari <yongari@FreeBSD.org> | 2009-12-17 18:37:11 +0000 |
commit | 35860d3255ece6fb45caf0ad184b33863340f6fa (patch) | |
tree | 0bae90ff0a8640d23e0afd12ce211d311156a7fb /share/man/man4/vge.4 | |
parent | bd0be472d9ca77a9a3378d3240edbd909e4d40cf (diff) | |
download | FreeBSD-src-35860d3255ece6fb45caf0ad184b33863340f6fa.zip FreeBSD-src-35860d3255ece6fb45caf0ad184b33863340f6fa.tar.gz |
Document newly added loader tunable and sysctl variables.
o hw.vge.msi_disable
o dev.vge.%d.int_holdoff
o dev.vge.%d.rx_coal_pkt
o dev.vge.%d.tx_coal_pkt
Diffstat (limited to 'share/man/man4/vge.4')
-rw-r--r-- | share/man/man4/vge.4 | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/share/man/man4/vge.4 b/share/man/man4/vge.4 index 2e9c7a5..5b34d2b 100644 --- a/share/man/man4/vge.4 +++ b/share/man/man4/vge.4 @@ -30,7 +30,7 @@ .\" .\" $FreeBSD$ .\" -.Dd February 21, 2007 +.Dd December 17, 2009 .Dt VGE 4 .Os .Sh NAME @@ -173,6 +173,38 @@ ZyXEL GN650-T 64-bit PCI Gigabit Ethernet NIC (ZX1701) .It ZyXEL GN670-T 32-bit PCI Gigabit Ethernet NIC (ZX1702) .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 . +.Bl -tag -width "xxxxxx" +.It Va hw.vge.msi_disable +This tunable disables MSI support on the Ethernet hardware. +The default value is 0. +.El +.Sh SYSCTL VARIABLES +The following variables are available as both +.Xr sysctl 8 +variables and +.Xr loader 8 +tunables: +.Bl -tag -width "xxxxxx" +.It Va dev.vge.%d.int_holdoff +Maximum number of time to delay interrupts. +The valid range is 0 to 5100 in units of 1us, the default is +150 (150us). +The resolution of of timer is about 20us so finer tuning than +20us wouldn't be available. +The interface should be brought down and up again before a change +takes effect. +.It Va dev.vge.%d.rx_coal_pkt +Maximum number of packets to fire Rx completion interrupt. +The valid range is 1 to 255, the default is 64. +.It Va dev.vge.%d.tx_coal_pkt +Maximum number of packets to fire Tx completion interrupt. +The valid range is 1 to 255, the default is 128. +.El .Sh DIAGNOSTICS .Bl -diag .It "vge%d: couldn't map memory" |