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bnx(4) [netbsd man page]

BNX(4)							   BSD Kernel Interfaces Manual 						    BNX(4)

NAME

     bnx -- Broadcom NetXtreme II 10/100/1000 Ethernet device

SYNOPSIS

     bnx* at pci?
     brgphy* at mii?

DESCRIPTION

     The bnx driver supports Broadcom's NetXtreme II product family, such as the BCM5706 PCI-X and BCM5708-BCM5709 PCI Express Ethernet con-
     trollers, which includes the following:

     o	 Dell PowerEdge 1950 integrated BCM5708 NIC (10/100/1000baseT)
     o	 Dell PowerEdge 2950 integrated BCM5708 NIC (10/100/1000baseT)
     o	 Dell PowerEdge M710 integrated BCM5709S NIC (1000baseSX)
     o	 HP NC370F PCI-X Multifunction Gigabit server adapter (1000baseSX)
     o	 HP NC370T PCI-X Multifunction Gigabit server adapter (10/100/1000baseT)
     o	 HP NC373F PCI Express Multifunction Gigabit server adapter (1000baseSX)
     o	 HP NC373i PCI Express Multifunction Gigabit embedded server adapter (10/100/1000baseT)
     o	 HP NC380T PCI Express Dual Port Multifunction Gigabit server adapter (10/100/1000baseT)
     o	 IBM xSeries 3550 integrated BCM5708 NIC (10/100/1000baseT)
     o	 IBM xSeries 3650 integrated BCM5708 NIC (10/100/1000baseT)

     The NetXtreme II product family is composed of various Converged NIC (or CNIC) Ethernet controllers which support a TCP Offload Engine (TOE),
     Remote DMA (RDMA), and iSCSI acceleration, in addition to standard L2 Ethernet traffic, all on the same controller.  The following features
     are supported in the bnx driver under NetBSD:

	   IPv4 receive IP/TCP/UDP checksum offload
	   Jumbo frames (up to 9022 bytes)
	   VLAN tag insertion
	   Interrupt coalescing
	   10/100/1000Mbps operation in full-duplex mode
	   10/100Mbps operation in half-duplex mode

     The bnx driver supports the following media types:

     autoselect   Enable autoselection of the media type and options.  The user can manually override the autoselected mode via ifconfig(8).

     10baseT/UTP  Set 10Mbps operation.  The ifconfig(8) mediaopt option can also be used to select either full-duplex or half-duplex modes.

     100baseTX	  Set 100Mbps (Fast Ethernet) operation.  The ifconfig(8) mediaopt option can also be used to select either full-duplex or
		  half-duplex modes.

     1000baseTX   Set 1000baseTX operation over twisted pair.  Only full-duplex mode is supported.

     1000baseSX   Set 1000Mbps (Gigabit Ethernet) operation.  Both full-duplex and half-duplex modes are supported.

     2500baseSX   Set 2500Mbps operation.  Only full-duplex mode is supported.

     The bnx driver supports the following media options:

     full-duplex  Force full duplex operation.

     half-duplex  Force half duplex operation.

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

SEE ALSO

     arp(4), brgphy(4), ifmedia(4), intro(4), mii(4), netintro(4), pci(4), ifconfig(8)

HISTORY

     The bnx device driver first appeared in NetBSD 4.0.

BSD
								 December 10, 2010							       BSD

Check Out this Related Man Page

ET(4)							   BSD Kernel Interfaces Manual 						     ET(4)

NAME

     et -- Agere ET1310 10/100/Gigabit Ethernet driver

SYNOPSIS

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

	   device miibus
	   device et

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

	   if_et_load="YES"

DESCRIPTION

     The et driver supports PCI Express Ethernet adapters based on the Agere ET1310 chip.

     The et driver supports the following media types:

     autoselect   Enable autoselection of the media types and options.	The user can manually override the autoselected mode by adding media
		  options to the /etc/rc.conf file.

     10baseT/UTP  Set 10Mbps operation.  The mediaopt option can also be used to select either full-duplex or half-duplex modes.

     100baseTX	  Set 100Mbps (Fast Ethernet) operation.  The mediaopt option can also be used to select either full-duplex or half-duplex modes.

     1000baseT	  Set 1000Mbps (Gigabit Ethernet) operation.  The mediaopt option can only be set to full-duplex mode.

     The et driver supports the following media options:

     full-duplex  Force full-duplex operation.

     half-duplex  Force half-duplex operation.

     Note that the 1000baseT media type is only available if it is supported by the adapter.  For more information on configuring this device, see
     ifconfig(8).

TUNABLES

     hw.et.rx_intr_npkts  This value controls how many packets should be received before a receive interrupt is generated.  The default value is
			  32.  It is recommended to set this value above 38 to prevent the host from being livelocked under a high degree of
			  stress.

     hw.et.rx_intr_delay  This value delays the generation of receive interrupts in units of ~4 microseconds.  It is used together with
			  hw.et.rx_intr_npkts to achieve RX interrupt moderation.  The default value is 20.

     hw.et.tx_intr_nsegs  This value controls how many segments (not packets) should be transmitted before a transmit interrupt is generated.  The
			  default value is 126.  It is recommended to set this value below 280 to prevent the TX ring from underflowing.

     hw.et.timer	  This value controls how often a timer interrupt should be generated.	It is used together with hw.et.tx_intr_nsegs to
			  achieve TX interrupt moderation.  The default value is 1000000000 (nanoseconds).

SEE ALSO

     arp(4), miibus(4), netintro(4), ng_ether(4), vlan(4), ifconfig(8)

HISTORY

     The et device driver first appeared in DragonFly 1.11.  The first FreeBSD release to include it was FreeBSD 8.0.

AUTHORS

     The et driver was written by Sepherosa Ziehau <sepherosa@gmail.com> for DragonFly.  It was ported to FreeBSD by Xin LI <delphij@FreeBSD.org>.

BSD
								   July 14, 2008							       BSD
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