XENNET(4)						 BSD/xen Kernel Interfaces Manual						 XENNET(4)

NAME

     xennet -- Xen frontend paravirtualized network interface

SYNOPSIS

     xennet* at xenbus?

DESCRIPTION

     The xennet interface forms the frontend part of the paravirtualized drivers 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 interface 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 interrupt) 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 ALSO

     ifmedia(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