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authorarybchik <arybchik@FreeBSD.org>2015-03-25 10:02:14 +0000
committerarybchik <arybchik@FreeBSD.org>2015-03-25 10:02:14 +0000
commit90ee6225b387e64c4cead3f7eccd2aa44d889371 (patch)
treed8f63a941ccafde0dce7c988ad9f795b88d3760f
parentabb73ce66365e0230fdec66349898102c18b242a (diff)
downloadFreeBSD-src-90ee6225b387e64c4cead3f7eccd2aa44d889371.zip
FreeBSD-src-90ee6225b387e64c4cead3f7eccd2aa44d889371.tar.gz
MFC: 272329
Update SolarFlare driver manual page with new tunables. Submitted by: Andrew Rybchenko <arybchenko at solarflare.com> Sponsored by: Solarflare Communications, Inc.
-rw-r--r--share/man/man4/sfxge.426
1 files changed, 26 insertions, 0 deletions
diff --git a/share/man/man4/sfxge.4 b/share/man/man4/sfxge.4
index 5e4935d..452f0d7 100644
--- a/share/man/man4/sfxge.4
+++ b/share/man/man4/sfxge.4
@@ -76,6 +76,32 @@ The
.Nm
driver supports all 10Gb Ethernet adapters based on Solarflare SFC9000
family controllers.
+.Sh LOADER TUNABLES
+Tunables can be set at the
+.Xr loader 8
+prompt before booting the kernel or stored in
+.Xr loader.conf 5 .
+Actual values can be obtained using
+.Xr sysctl 8 .
+.Bl -tag -width indent
+.It Va hw.sfxge.rx_ring
+Maximum number of descriptors in a receive queue ring.
+Supported values are: 512, 1024, 2048 and 4096.
+.It Va hw.sfxge.tx_ring
+Maximum number of descriptors in a transmit queue ring.
+Supported values are: 512, 1024, 2048 and 4096.
+.It Va hw.sfxge.tx_dpl_get_max
+The maximum length of the deferred packet 'get-list' for queued transmit
+packets, used only if the transmit queue lock can be acquired.
+If packet is dropped, \fItx_early_drops\fR counter grows and local sender
+gets ENOBUFS error.
+Value must be greater than 0.
+.It Va hw.sfxge.tx_dpl_put_max
+The maximum length of the deferred packet 'put-list' for queued transmit
+packets, used if the transmit queue lock cannot be acquired.
+If packet is dropped, \fItx_early_drops\fR counter grows and local sender
+gets ENOBUFS error.
+Value must be greater or equal to 0.
.Sh SUPPORT
For general information and support,
go to the Solarflare support website at:
OpenPOWER on IntegriCloud