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List:       freebsd-commits-all
Subject:    svn commit: r272329 - head/share/man/man4
From:       "George V. Neville-Neil" <gnn () FreeBSD ! org>
Date:       2014-09-30 20:38:37
Message-ID: 201409302038.s8UKcbTn003653 () svn ! freebsd ! org
[Download RAW message or body]

Author: gnn
Date: Tue Sep 30 20:38:36 2014
New Revision: 272329
URL: http://svnweb.freebsd.org/changeset/base/272329

Log:
  Update SolarFlare driver manual page with new tunables.
  
  Submitted by:   Andrew Rybchenko <arybchenko at solarflare.com>
  Sponsored by:   Solarflare Communications, Inc.

Modified:
  head/share/man/man4/sfxge.4

Modified: head/share/man/man4/sfxge.4
==============================================================================
--- head/share/man/man4/sfxge.4	Tue Sep 30 20:36:07 2014	(r272328)
+++ head/share/man/man4/sfxge.4	Tue Sep 30 20:38:36 2014	(r272329)
@@ -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:
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