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DE(4) Kernel Interfaces Manual DE(4)
NAME
de - DEC DEUNA 10 Mb/s Ethernet interface
SYNOPSIS
/sys/conf/SYSTEM:
NDE de_controllers # DEUNA
DESCRIPTION
The de interface provides access to a 10 Mb/s Ethernet network through a Digital Equipment UNIBUS Network Adapter (DEUNA).
Each of the host's network addresses is specified at boot time with an SIOCSIFADDR ioctl. The de interface employs the address resolution
protocol described in arp(4P) to dynamically map between Internet and Ethernet addresses on the local network.
The interface normally tries to use a ``trailer'' encapsulation to minimize copying data on input and output. The use of trailers is nego-
tiated with ARP. This negotiation may be disabled, on a per-interface basis, by setting the IFF_NOTRAILERS flag with an SIOCSIFFLAGS
ioctl.
DIAGNOSTICS
de%d: hardware address %s. This is a normal autoconfiguration message noting the 6 byte physical ethernet address of the adapter.
de%d: oerror, flags=%b tdrerr=%b (len=%d). The hardware indicated an error in transmitting a packet to the cable. The status and error
flags are reported.
de%d: ierror, flags=%b lenerr=%b (len=%d). The hardware indicated an error in reading a packet from the cable. The status and error flags
are reported.
de%d: can't handle af%d. The interface was handed a message with addresses formatted in an unsuitable address family; the packet was
dropped.
de%d: buffer unavailable. The interface received more packets than it had buffers allocated to receive them.
de%d: address change failed, csr0=%b csr1=%b. The interface was unable to reprogram its physical ethernet address. This may happen with
very early models of the interface. This facility is used only when the controller is not the first network interface configured for XNS.
The following messages indicate a probable hardware error performing the indicated operation during autoconfiguration or initialization.
The two control and status registers should indicate the nature of the failure. See the hardware manual for details.
de%d: reset failed, csr0=%b csr1=%b.
de%d: ppcb failed, csr0=%b csr1=%b.
de%d: read addr failed, csr0=%b csr1=%b.
de%d: wtring failed, csr0=%b csr1=%b.
de%d: wtmode failed, csr0=%b csr1=%b.
SEE ALSO
intro(4N), inet(4F), arp(4P)
3rd Berkeley Distribution August 20, 1987 DE(4)
