freebsd man page for sfxge

SFXGE(4)						   BSD Kernel Interfaces Manual 						  SFXGE(4)

NAME
     sfxge -- Solarflare 10Gb Ethernet adapter driver

SYNOPSIS
     To compile this driver into the kernel, place the following lines in your kernel configuration file:

	   device sfxge

     To load the driver as a module at boot time, place the following line in loader.conf(5):

	   sfxge_load="YES"

DESCRIPTION
     The sfxge driver provides support for 10Gb Ethernet adapters based on Solarflare SFC9000 family controllers.  The driver supports jumbo
     frames, transmit/receive checksum offload, TCP Segmentation Offload (TSO), Large Receive Offload (LRO), VLAN checksum offload, VLAN TSO, and
     Receive Side Scaling (RSS) using MSI-X interrupts.

     The driver allocates 1 receive queue, transmit queue, event queue and IRQ per CPU up to a maximum of 64.  IRQ affinities should be spread out
     using cpuset(1).  Interrupt moderation may be controlled through the sysctl dev.sfxge.%d.int_mod (units are microseconds).

     For more information on configuring this device, see ifconfig(8).

     A large number of MAC, PHY and data path statistics are available under the sysctl dev.sfxge.%d.stats.  The adapter's VPD fields including
     its serial number are available under the sysctl dev.sfxge.%d.vpd.

HARDWARE
     The sfxge driver supports all 10Gb Ethernet adapters based on Solarflare SFC9000 family controllers.

LOADER TUNABLES
     Tunables can be set at the loader(8) prompt before booting the kernel or stored in loader.conf(5).  Actual values can be obtained using
     sysctl(8).

     hw.sfxge.rx_ring
	     The maximum number of descriptors in a receive queue ring.  Supported values are: 512, 1024, 2048 and 4096.

     hw.sfxge.tx_ring
	     The maximum number of descriptors in a transmit queue ring.  Supported values are: 512, 1024, 2048 and 4096.

     hw.sfxge.tx_dpl_get_max
	     The maximum length of the deferred packet ``get-list'' for queued transmit packets (TCP and non-TCP), used only if the transmit queue
	     lock can be acquired.  If a packet is dropped, the tx_get_overflow counter is incremented and the local sender receives ENOBUFS.  The
	     value must be greater than 0.

     hw.sfxge.tx_dpl_get_non_tcp_max
	     The maximum number of non-TCP packets in the deferred packet ``get-list'' , used only if the transmit queue lock can be acquired.	If
	     packet is dropped, the tx_get_non_tcp_overflow counter is incremented and the local sender receives ENOBUFS.  The value must be
	     greater than 0.

     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 a packet is dropped, the tx_put_overflow counter is incremented and the local sender receives ENOBUFS.  The value must
	     be greater than or equal to 0.

     hw.sfxge.N.max_rss_channels
	     The maximum number of allocated RSS channels for the Nth adapter.	If set to 0 or unset, the number of channels is determined by the
	     number of CPU cores.

SUPPORT
     For general information and support, go to the Solarflare support website at: https://support.solarflare.com.

SEE ALSO
     cpuset(1), arp(4), netintro(4), ng_ether(4), vlan(4), ifconfig(8)

AUTHORS
     The sfxge driver was written by Philip Paeps and
     Solarflare Communications, Inc.

BSD
								September 30, 2014							       BSD