The
hv_netvsc
driver implements the virtual network device for
FreeBSD
guest
partitions running on Hyper-V.
FreeBSD
guest partitions running on Hyper-V do not have direct access to
network devices attached to the Hyper-V server.
Although a
FreeBSD
guest can access network devices using Hyper-V's
full emulation mode, the performance in this mode tends to be unsatisfactory.
To counter the above issues, the
hv_netvsc
driver implements a network
Virtual
Service Consumer (VSC) that relays network requests from the guest partition
to the network Virtual Service Provider (VSP) hosted in the root partition
using the high performance data exchange infrastructure provided by
hv_vmbus(4)
driver.
The VSP in the root partition then forwards the network related requests to
the physical network card.
