VND(7D)VND(7D)NAMEvnd - virtual layer two network driver
SYNOPSIS
/dev/vnd/ctl
/dev/vnd/*
DESCRIPTION
The vnd driver provides support for a layer two datapath in an analo‐
gous way that IP(7P) provides a support for an IP-based layer three
datapath. Both devices operate exclusively on datalinks. A datalink
that has been plumbed up with IP via ifconfig(1M) or ipadm(1M) cannot
be used with vnd or vice-versa.
The vnd driver supports and takes advantage of the the following illu‐
mos features:
Supports dld/dls feature negotation of GLDv3 features, such as
direct calls, flow control, checksum offloading, and more.
All IP and IPv6 based traffic is sent through ipfilter(5),
allowing packet filtering.
Better control over vectored reads and writes in a frame-centric
manner through framed I/O. See libvnd(3LIB) for more information
on these interfaces.
The vnd driver exposes two different kinds of device nodes. The first
is a self-cloning control node which can be used to create vnd devices
on top of datalinks. Those devices can optionally be bound into the
file system namespace under /dev/vnd. Control operations on the control
node or named devices are private to the implementation. Instead, lib‐
vnd(3LIB) provides a stable interfaces for using, creating, and manipu‐
lating vnd devices.
FILES
/dev/vnd/ctl
vnd self-cloning control node
/dev/vnd/%link
Character device that corresponds to the vnd device of
the given name (%link). A given device will appear for
each actively linked device in the current zone.
/dev/vnd/zone/%zone/%link
These are character devices that correspond to the vnd
device of the given name (%link). They are organized
based on the zone that they appear in. Thus if a zone
named foo has a vnd device named bar, then the global
zone will have the file /dev/vnd/zone/foo/bar. Note,
these only occur in the global zone.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌────────────────────┬─────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├────────────────────┼─────────────────┤
│Interface Stability │ Evolving │
└────────────────────┴─────────────────┘
SEE ALSOdladm(1M), ipflter(5), libvnd(3LIB), vndadm(1M), vndstat(1)
Feb 11, 2014 VND(7D)
