NAME

le − Sun-3/50, Sun-3/60 10MB Ethernet interface

CONFIG

device le0 at obio ? csr

DESCRIPTION

The le interface provides access to a 10 Mb/s Ethernet network through a Sun-3 controller using the AMD LANCE (Local Area Network Controller for Ethernet) Am7990 chip.  For a general description of network interfaces see if(4N). 

The synopsis line above specifies the first and only Ethernet controller on a Sun-3/50 system. 

SEE ALSO

if(4N), kb(4S), tty_compact(4)

DIAGNOSTICS

le%d: transmitter frozen — resetting 
A bug in the LANCE chip has stopped the chip’s transmitter section.  The driver has detected this condition and reinitialized the chip. 

le%d: out of mbufs: output packet dropped 
The driver has run out of memory to use to buffer packets on output. The packet being transmitted at the time of occurrence is lost. This error is usually symptomatic of trouble elsewhere in the kernel.

le%d: stray transmitter interrupt 
The LANCE chip has signalled that it completed transmitting a packet but the driver has sent no such packet. 

le%d: LANCE Rev C/D Extra Byte(s) bug; Packet dropped 
The LANCE chip’s internal silo pointers have become misaligned.  This error arises from a chip bug. 

le%d: trailer error 
An incoming packet claimed to have a trailing header but did not.

le%d: runt packet 
An incoming packet’s size was below the Ethernet minimum transmission size.

le%d: Receive buffer error - BUFF bit set in rmd 
This error “should never happen,” as it occurs only in conjunction with a LANCE feature that the driver does not use. 

le%d: Received packet with STP bit in rmd cleared 
The driver has received a packet that straddles multiple receive buffers and therefore consumes more than one of the LANCE chip’s receive descriptors.  Provided that all stations on the Ethernet are operating according to the Ethernet specification, this error “should never happen,” since the driver allocates its receive buffers to be large enough to hold packets of the largest permitted size.  Most likely, some other station on the net is transmitting packets whose lengths exceed the maximum permitted for Ethernet. 

le%d: Received packet with ENP bit in rmd cleared 
The driver has received a packet that straddles multiple receive buffers and therefore consumes more than one of the LANCE chip’s receive descriptors.  Provided that all stations on the Ethernet are operating according to the Ethernet specification, this error “should never happen,” since the driver allocates its receive buffers to be large enough to hold packets of the largest permitted size.  The most likely cause of the message is that some other station on the net is transmitting packets whose lengths exceed the maximum permitted for Ethernet. 

le%d: Transmit buffer error - BUFF bit set in tmd 
Excessive bus contention has prevented the LANCE chip from gathering packet contents quickly enough to sustain the packet’s transmission over the Ethernet.  The affected packet is lost. 

le%d: Transmit late collision -  Net problem? 
A packet collision has occurred after the channel’s slot time has elapsed. This error usually indicates faulty hardware elsewhere on the net.

le%d: No carrier - transceiver cable problem? 
The LANCE chip has lost input to its carrier detect pin while trying to transmit a packet. 

le%d: Transmit retried more than 16 times - net jammed 
Network activity has become so intense that sixteen successive transmission attempts failed, the LANCE chip gave up on the current packet. 

le%d: missed packet 
The driver has dropped an incoming packet because it had no buffer space for it.

le%d: Babble error - sent a packet longer than the maximum length 
While transmitting a packet, the LANCE chip has noticed that the packet’s length exceeds the maximum allowed for Ethernet.  This error indicates a kernel bug. 

le%d: Memory Error!  Ethernet chip memory access timed out 
The LANCE chip timed out while trying to acquire the bus for a DVMA transfer. 

le%d: Reception stopped 
Because of some other error, the receive section of the LANCE chip shut down and had to be restarted. 

le%d: Transmission stopped 
Because of some other error, the transmit section of the LANCE chip shut down and had to be restarted. 

Sun Release 4.0  —  Last change: 9 October 1987