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Update SolarFlare driver manual page with new tunables.

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Submitted by:   Andrew Rybchenko <arybchenko at solarflare.com>
Sponsored by:   Solarflare Communications, Inc.
This commit is contained in:
George V. Neville-Neil 2014-09-30 20:38:36 +00:00
parent 385b1d8e67
commit 316ee70dd3
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=272329
1 changed files with 26 additions and 0 deletions
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share/man/man4/sfxge.4
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@ -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: