Date: Fri, 24 Sep 2010 18:12:19 +0000 (UTC) From: Pyun YongHyeon <yongari@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r213111 - stable/8/share/man/man4 Message-ID: <201009241812.o8OICJdp034390@svn.freebsd.org>
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Author: yongari Date: Fri Sep 24 18:12:19 2010 New Revision: 213111 URL: http://svn.freebsd.org/changeset/base/213111 Log: MFC r211597: Document newly introduced tunable dev.bge.%d.forced_udpcsum. While I'm here also mention tunable dev.bge.%d.forced_collapse. Modified: stable/8/share/man/man4/bge.4 Directory Properties: stable/8/share/man/man4/ (props changed) Modified: stable/8/share/man/man4/bge.4 ============================================================================== --- stable/8/share/man/man4/bge.4 Fri Sep 24 18:01:43 2010 (r213110) +++ stable/8/share/man/man4/bge.4 Fri Sep 24 18:12:19 2010 (r213111) @@ -31,7 +31,7 @@ .\" .\" $FreeBSD$ .\" -.Dd December 15, 2009 +.Dd August 21, 2010 .Dt BGE 4 .Os .Sh NAME @@ -219,6 +219,26 @@ Allow the ASF feature for cooperating wi Can cause system lockup problems on a small number of systems. Disabled by default. .El +.Sh SYSCTL VARIABLES +The following variables are available as both +.Xr sysctl 8 +variables and +.Xr loader 8 +tunables: +.Bl -tag -width indent +.It Va dev.bge.%d.forced_collapse +Allow collapsing multiple transmit buffers into a single buffer +to increase transmit performance with the cost of CPU cycles. +The default value is 0 to disable transmit buffer collapsing. +.It Va dev.bge.%d.forced_udpcsum +Enable UDP transmit checksum offloading even if controller can generate +UDP datagrams with checksum value 0. +UDP datagrams with checksum value 0 can confuse receiver host as it means +sender did not compute UDP checksum. +The default value is 0 which disables UDP transmit checksum offloading. +The interface need to be brought down and up again before a change takes +effect. +.El .Sh DIAGNOSTICS .Bl -diag .It "bge%d: couldn't map memory"
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