Commit Graph

5 Commits

Author SHA1 Message Date
Sepherosa Ziehau
c685956956 hyperv: Add VF bringup scripts and devd rules.
How network VF works with hn(4) on Hyper-V in non-transparent mode:

- Each network VF has a cooresponding hn(4).
- The network VF and the it's cooresponding hn(4) have the same hardware
  address.
- Once the network VF is up, e.g. ifconfig VF up:
  o  All of the transmission should go through the network VF.
  o  Most of the reception goes through the network VF.
  o  Small amount of reception may go through the cooresponding hn(4).
     This reception will happen, even if the the cooresponding hn(4) is
     down.  The cooresponding hn(4) will change the reception interface
     to the network VF, so that network layer and application layer will
     be tricked into thinking that these packets were received by the
     network VF.
  o  The cooresponding hn(4) pretends the physical link is down.
- Once the network VF is down or detached:
  o  All of the transmission should go through the cooresponding hn(4).
  o  All of the reception goes through the cooresponding hn(4).
  o  The cooresponding hn(4) fallbacks to the original physical link
     detection logic.

All these features are mainly used to help live migration, during which
the network VF will be detached, while the network communication to the
VM must not be cut off.  In order to reach this level of live migration
transparency, we use failover mode lagg(4) with the network VF and the
cooresponding hn(4) attached to it.

To ease user configuration for both network VF and non-network VF, the
lagg(4) will be created by the following rules, and the configuration
of the cooresponding hn(4) will be applied to the lagg(4) automatically.

Sponsored by:	Microsoft
Differential Revision:	https://reviews.freebsd.org/D11635
2017-07-31 07:18:15 +00:00
Enji Cooper
a251f9dcf8 libexec: normalize paths using SRCTOP-relative paths or :H when possible
This simplifies make logic/output

MFC after:	1 month
Sponsored by:	Dell EMC Isilon
2017-03-04 11:28:03 +00:00
Bryan Drewery
7fdd45b091 Use LIBEXECDIR for /usr/libexec.
MFC after:	1 week
Sponsored by:	EMC / Isilon Storage Division
2015-11-26 01:14:40 +00:00
Bryan Drewery
93e779a26c META MODE: These need object directories to handle staging.
Sponsored by:	EMC / Isilon Storage Division
2015-11-26 01:14:27 +00:00
Xin LI
e72055b7fe Import HyperV Key-Value Pair (KVP) driver and daemon code by Microsoft,
many thanks for their continued support of FreeBSD.

While I'm there, also implement a new build knob, WITHOUT_HYPERV to
disable building and installing of the HyperV utilities when necessary.

The HyperV utilities are only built for i386 and amd64 targets.

This is a stable/10 candidate for inclusion with 10.1-RELEASE.

Submitted by:	Wei Hu <weh microsoft com>
MFC after:	1 week
2014-09-13 02:15:31 +00:00