High-performance TCP/IP networking for bhyve VMs using netmap passthrough

[Vincenzo Maffione]

Hello

Project summary
=================
ptnet is a new multi-queue paravirtualized device that builds on ptnetmap
to allow VMs to exchange TCP traffic at 20 Gbps, while still offering the
same ptnetmap performance (10-100 Mpps) to native netmap applications.
The purpose of this SOC project is to write a ptnet driver for FreeBSD and
a corresponding device model for the bhyve hypervisor.


Status update for week 4
===================
I've started to extend the ptnet driver, implementing the network interface
methods: the ioctl routine (IFF_UP/IFF_DOWN, ...), the transmission routine
and reception routine, together with interrupt handling. Plan for week 5 is
to complete the implementation (add per-queue taskqueues, complete ioctl,
revise TX/RX routines), so that experimentation and bug-fixing can start in
week 6.

Links:
   Project wiki page:
https://wiki.freebsd.org/SummerOfCode2016/PtnetDriverAndDeviceModel
   Code:
https://svnweb.freebsd.org/socsvn/soc2016/vincenzo/head/sys/dev/netmap/if_ptnet.c?view=markup


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Vincenzo Maffione