MFC 322488
hyperv: Update copyright for the files changed in 2017

Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D11982

MFC 321965
hyperv/kvp: Use proper size macro for adapter id.

Submitted by: Christopher Ertl <Christopher.Ertl microsoft com>
Sponsored by: Microsoft

MFC 316813,316815

316813
hyperv/storvsc: Use ULL for 64bits value shift.

Reported by: PVS
Sponsored by: Microsoft

316815
hyperv/kvp: Remove always false condition.

Reported by: PVS
Sponsored by: Microsoft

MFC 310312-310314

310312
hyperv/ic: Factor out function to send IC response

Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D8844

310313
hyperv/ic: Cleanup common struct and functions.

Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D8845

310314
hyperv/ic: Rename cleaned up header file.

Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D8846

MFC 308201

hyperv/kvp: Don't mix message status codes and function return values.

While I'm here, move message status codes to hv_utilreg.h, since they
will be used by the upcoming VSS stuffs.

Submitted by: Hongjiang Zhang <honzhan microsoft com>
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D8391

MFC 307845

hyperv/ic: Rework framework/message version negotiation.

Submitted by: Hongjiang Zhang <honzhan microsoft com>
Modified by: sephe
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D8280

MFC 305585

hyperv/kvp: Fix IPv4/IPv6 address injection support.

The GUID string provided by hypervisor has leading and trailing braces,
while our GUID string does not have braces at all. Both braces should
be ignored, when the GUID strings are compared.

Submitted by: Hongjiang Zhang <honzhan microsoft com>
Modified by: sephe
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D7809

MFC 304331

hyperv/kvp: Remove unnecessary function parameter.

Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D7550

MFC 304270,304273

304270
hyperv/util: Don't reference hn_softc in KVP

hn_softc is private data struct.

Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D7519

304273
hyperv/util: Factor out helper for IC device_probe DEVMETHOD

Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D7530

MFC 303822-303824

303822
hyperv/ic: Remove never used second parameter of hv_negotiate_version()

Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D7422

303823
hyperv/ic: Expose the receive buffer length for callers to use.

Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D7423

303824
hyperv/ic: Pass the channel callback to hv_util_attach()

The saved channel callback in util softc is actually never used.

Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D7424

MFC 303066-303072,303127-303129,303131

303066
hyperv/vmbus: Get rid of unnecessary definition.

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7240

303067
hyperv/vmbus: Move IC register definition to Hyper-V utilities

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7241

303068
hyperv/vmbus: Channel struct field rename

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7242

303069
hyperv/vmbus: Pass channel as the first argument for channel callback

The prepares to kill device private fields in channel struct, which
are not flexible and extensible.

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7243

303070
hyperv/vmbus: Deprecate the device private data in channel struct

They are neither flexible nor extensible.

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7244

303071
hyperv/vmbus: Hide channel struct definition.

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7245

303072
hyperv/vmbus: Save MNF trigger location instead of MNF trigger index.

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7246

303127
hyperv/vmbus: Save event flag location and evet flag mask.

This avoids unnecessary access to the vmbus_softc struct on sending path.

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7257

303128
hyperv/vmbus: Reorder channel fields.

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7258

303129
hyperv/vmbus: Shuffle function declaration and macro definition.

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7259

303131
hyperv: hv_vmbus_channel -> vmbus_channel

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7260

MFC 302885,302886

302885
hyperv/vmbus: Cleanup channel receiving.

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7202

302886
hyperv/vmbus: Cleanup channel packet receiving.

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7204

MFC 302882-302884

302882
hyperv/vmbus: Function rename

And reorder the error prone parameters list.

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7191

302883
hyperv/vmbus: Field rename

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7193

302884
hyperv/vmbus: Factor out macros to do channel packet length conversion.

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7194

MFC 302875,302876,302878-302881

302875
hyperv/vmbus: Redefine channel packet.

The channel packet header will be shared w/ PRP (physical region page)
list channel packet and SG (scatter gather) list channel packet.

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7155

302876
hyperv/vmbus: Rework sglist sending.

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7156

302878
hyeprv/vmbus: Rework prplist sending.

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7175

302879
hyperv/vmbus: Move channel packet flags definition to vmbus.h

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7176

302880
hyperv/vmbus: Move channel packet types definition to vmbus.h

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7177

302881
hyperv/vmbus: Cleanup channel sending

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7178

MFC 302733,302737,302801-302806

302733
hyperv/vmbus: Remove unused code

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7089

302737
hyperv/vmbus: Cleanup channel rescind

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7090

302801
hyperv/vmbus: Remove unused bits

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7091

302802
hyperv: hv_guid -> struct hyperv_guid.

This paves way for the further cleanup/disentangle.

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7092

302803
hyperv/vmbus: Move channel offer message definition to vmbus_reg.h

- Avoid bit fields.
- Avoid unnecessary indirection.

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7093

302804
hyperv/vmbus: Switch to vmbus channel message macros

Prepare for more cleanup.

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7094

302805
hyperv/vmbus: Remove unused bits

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7095

302806
hyperv/vmbus: Get rid of rel{_id,id}, use channel id consistently.

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7100

MFC 302698-302704,302706

302698
hyperv/vmbus: Add vmbus method for GUID base device probing.

Reduce the exposure of hv_device.

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7024

302699
hyperv/vmbus: All ivars are read-only; nuke unnecessary write_ivar

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7025

302700
hyperv/vmbus: Add channel ivar accessor.

This makes life easier during the transition period to nuke the hv_device.

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7026

302701
hyperv/stor: Avoid the hv_device and nuke the broken get_stor_device

This paves way to nuke the hv_device, which is actually an unncessary
indirection.

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7027

302702
hyperv/util: Avoid the hv_device

This paves way to nuke the hv_device, which is actually an unncessary
indirection.

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7028

302703
hyperv/vmbus: Deprecate the usage of hv_device.

This paves way to nuke the hv_device, which is actually an unncessary
indirection.

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7032

302704
hyperv/hn: Avoid the hv_device

This paves way to nuke the hv_device, which is actually an unncessary
indirection.

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7033

302706
hyperv: Get rid of hv_device, which is unnecessary indirection.

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7034

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

hyperv/kvp: Use if_xname.

MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D6641

hyperv: Move guid2str from vmbus file to hyperv file

- Use uint8_t for GUID byte array.
- Define GUID string length.
- Break long lines.
- Nuke unnecessary stack variable.

MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D6640

sys/dev: minor spelling fixes.

Most affect comments, very few have user-visible effects.

hyperv: Update copyright to 2016 for the files Microsoft changed in 2016

Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D6039

Cleanup unnecessary semicolons from the kernel.

Found with devel/coccinelle.

hyperv/utils: Allow hint to disable individual utility

Reviewed by: kib, Dexuan Cui <decui microsoft com>
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D5714

hyperv: Factor out snprinf_hv_guid()

Submitted by: Ju Sun <junsu microsoft com>
Reviewed by: Dexuan Cui <decui microsoft com>, sephe
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D5651

hyperv/utils: Code rearrange and cleanup

Split heartbeat, shutdown and timesync out of utils code
and name them properly.

Submitted by: Jun Su <junsu microsoft com>
Reviewed by: adrian, sephe, Hongjiang Zhang <honzhan microsoft com>
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D5216

hyperv: Use standard taskqueue instead of hv_work_queue

HyperV code was ported from Linux. There is an implementation of
work queue called hv_work_queue. In FreeBSD, taskqueue could be
used for the same purpose. Convert all the consumer of hv_work_queue
to use taskqueue, and remove work queue implementation.

Submitted by: Jun Su <junsu microsoft com>
Reviewed by: adrian, Hongjiang Zhang <honzhan microsoft com>
Approved by: adrian (mentor)
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D4963

hyperv/kvp: wake up the daemon if it's sleeping due to poll()

Without the patch, there is a race condition: when poll() is invoked(),
if kvp_globals.daemon_busy is false, the daemon won't be timely
woke up, because hv_kvp_send_msg_to_daemon() can't wake up the daemon
in this case.

Submitted by: Dexuan Cui <decui@microsoft.com>
Sponsored by: Microsoft OSTC
Reviewed by: delphij, royger
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D4258

Microsoft vmbus, storage and other related driver enhancements for HyperV.
- Vmbus multi channel support.
- Vector interrupt support.
- Signal optimization.
- Storvsc driver performance improvement.
- Scatter and gather support for storvsc driver.
- Minor bug fix for KVP driver.
Thanks royger, jhb and delphij from FreeBSD community for the reviews
and comments. Also thanks Hovy Xu from NetApp for the contributions to
the storvsc driver.

PR: 195238
Submitted by: whu
Reviewed by: royger, jhb, delphij
Approved by: royger
MFC after: 2 weeks
Relnotes: yes
Sponsored by: Microsoft OSTC

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