NAME

vioif — Virtio Networking Driver

SYNOPSIS

/dev/net/vioif*

DESCRIPTION

The vioif driver is a GLDv3 NIC driver that supports the virtio para-virtualization specification which is commonly used by many hypervisors and emulators. The device supports what the specification calls the more commonly found ‘legacy’ interface for devices.

The driver supports the following networking features, if offered by the device:

Jumbo frames up to 65535 bytes
Transmit and receive TCP and UDP checksum offload
IPv4 and IPv6 TCP segmentation offload

APPLICATION PROGRAMMING INTERFACE

For each supported device instance, which corresponds to a port, a character-special file is created. This device can be used with the Data Link Provider Interface (DLPI) through either libdlpi(3LIB) or dlpi(4P).

Each instance is assigned a unique ascending integer identifier starting from zero. The first instance in the system would be enumerated with the id 0 and be named vioif0 and be found in the file system at /dev/net/vioif0.

CONFIGURATION

The networking devices created by the vioif driver can be controlled through dladm(8). There is no driver.conf(5) file for vioif currently.

ARCHITECTURE

The vioif driver is only supported on x86.

FILES

/dev/net/vioif*: vioif special character device.
/kernel/drv/amd64/vioif: x86 device driver.