XENNET(4) BSD Kernel Interfaces Manual XENNET(4)NAMExennet — Xen frontend paravirtualized network interface
SYNOPSIS
xennet* at xenbus?
DESCRIPTION
The xennet interface forms the frontend part of the paravirtualized driv‐
ers used by Xen guest domains to have network connectivity.
When the host domain is NetBSD, the endpoint of the xennet interface is a
xvif(4) interface. In the XenStore, xvif and xennet are identified by
“vif” (virtual interface) entries.
Conceptually, frontends and backends drivers are similar to two Ethernet
cards connected via a crossover cable.
DIAGNOSTICS
xennet%d: can't read mac address, err %d The MAC address for this inter‐
face could not be read from XenStore.
xennet%d: %s is not a valid mac address The MAC address specified in the
configuration file of the newly created guest domain is invalid.
xennet%d: using event channel %d The Xen event channel (virtual inter‐
rupt) ID associated to this xennet.
xennet%d: using RX copy mode The xennet and its associated endpoint use
copy mode for communication: packets are copied from one domain's memory
to another.
xennet%d: using RX flip mode The xennet and its associated endpoint use
flip mode for communication: packets are passed by remapping memory pages
between domains.
SEE ALSOifmedia(4), xenbus(4), xvif(4), ifconfig(8)HISTORY
The xennet driver first appeared in NetBSD 3.0.
AUTHORS
The xennet driver was written by Manuel Bouyer ⟨bouyer@NetBSD.org⟩ and
Christian Limpach ⟨chris@pin.lu⟩.
BSD January 8, 2011 BSD