Date: Thu, 17 Dec 2009 18:37:11 +0000 (UTC) From: Pyun YongHyeon <yongari@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r200641 - head/share/man/man4 Message-ID: <200912171837.nBHIbBEd045311@svn.freebsd.org>
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Author: yongari Date: Thu Dec 17 18:37:11 2009 New Revision: 200641 URL: http://svn.freebsd.org/changeset/base/200641 Log: 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 Modified: head/share/man/man4/vge.4 Modified: head/share/man/man4/vge.4 ============================================================================== --- head/share/man/man4/vge.4 Thu Dec 17 18:17:46 2009 (r200640) +++ head/share/man/man4/vge.4 Thu Dec 17 18:37:11 2009 (r200641) @@ -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 Etherne .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"
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