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BNX(4) Device Drivers Manual BNX(4)

bnxBroadcom NetXtreme II 10/100/1000 Ethernet device

bnx* at pci?
brgphy* at mii?

The bnx driver supports Broadcom's NetXtreme II product family, such as the BCM5706 PCI-X and BCM5708-BCM5709-BCM5716 PCIe Ethernet controllers, which includes the following:

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:

Enable autoselection of the media type and options. The user can manually override the autoselected mode via ifconfig(8).
Set 10Mbps operation. The ifconfig(8) mediaopt option can also be used to select either full-duplex or half-duplex modes.
Set 100Mbps (Fast Ethernet) operation. The ifconfig(8) mediaopt option can also be used to select either full-duplex or half-duplex modes.
Set 1000baseTX operation over twisted pair. Only full-duplex mode is supported.
Set 1000Mbps (Gigabit Ethernet) operation. Both full-duplex and half-duplex modes are supported.
Set 2500Mbps operation. Only full-duplex mode is supported.

The bnx driver supports the following media options:

Force full duplex operation.
Force half duplex operation.

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

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

The bnx driver was written by David Christensen <davidch@broadcom.com> in FreeBSD, where it is called bce. And it's ported to OpenBSD by Brad Smith <brad@openbsd.org>. It's ported to NetBSD by Quentin Garnier. The bnx device driver first appeared in NetBSD 4.0.

March 27, 2019 NetBSD-9.2