LNC(4)

NAME
lnc - AMD Lance/PCnet Ethernet device driver

SYNOPSIS
device lnc0 at isa? port 0x280 net irq 10 drq 0 vector lncintr

DESCRIPTION
The lnc driver provides support for the AMD family of Lance/PCnet Ethernet NICs including the Am7990 and Am79C960. The Ethernet cards supported by the lnc interface are:

Novell NE2100

Novell NE32-VL

Isolan BICC

Digital DEPCA

DIAGNOSTICS

lnc%d: Framing error A framing error occurred. This means a CRC error also occurred. This caused the driver to drop the packet that contained the framing error.

lnc%d: Receive CRC error The received Ethernet frame failed the CRC checksum. This caused the driver to drop the packet that failed the checksum.

lnc%d: Packet dropped, no mbufs The driver ran out of mbuf's. This may suggest a resource problem.

lnc%d: Couldn't allocate memory for NIC This is a fatal error. The driver will not attach to the card under this circumstance.

lnc%d: Memory allocated above 16Mb limit ISA and ESIA cards require bounce buffers for DMA transfers above 16mb. The Am7990 and Am79C960 only have 24 address lines and so can only access the lower 16Mb of physical memory. The lnc driver assumes the memory it allocates is within the lower 16Mb range. This is not a very valid assumption but there's nothing that can be done about it yet. For shared memory NICs this isn't relevant.

lnc%d: Device timeout -- Resetting The device has stopped responding to the network, or there is a problem with the network connection (cable). Make sure the network connection in use is the same one the card is configured for.

lnc%d: Transmit late collision -- Net error?

lnc%d: Loss of carrier during transmit -- Net error?

lnc%d: Transmit of packet failed after 16 attempts -- TDR = %d

lnc%d: Heartbeat error -- SQE test failed

lnc%d: Babble error - more than 1519 bytes transmitted

lnc%d: Missed packet -- no receive buffer

lnc%d: Memory error -- Resetting

lnc%d: Couldn't get mbuf for transmit packet -- Resetting

lnc%d: Receive buffer error

lnc%d: Receive overflow error

lnc%d: Receive interrupt with buffer still owned by controller -- Resetting

lnc%d: Receive interrupt but not start of packet -- Resetting

lnc%d: Start of packet found before end of previous in receive ring -- Resetting

lnc%d: End of received packet not found -- Resetting

lnc%d: Transmit interrupt with buffer still owned by controller -- Resetting

lnc%d: Transmit interrupt but not start of packet -- Resetting

lnc%d: Start of packet found before end of previous in transmit ring -- Resetting

lnc%d: End of transmitted packet not found -- Resetting

lnc%d: Transmit buffer error -- Resetting

lnc%d: Transmit underflow error -- Resetting

BUGS
This driver has the potential of being the most verbose of any of the Ethernet device drivers.

SEE ALSO
arp(4), netintro(4), ifconfig(8)

HISTORY
The lnc device driver first appeared in FreeBSD 2.2.

AUTHORS
The lnc device driver was written by Paul Richards. This manual page was written by David E. O'Brien.