- Copy stable/10@296371 to releng/10.3 in preparation for 10.3-RC1
builds.
- Update newvers.sh to reflect RC1.
- Update __FreeBSD_version to reflect 10.3.
- Update default pkg(8) configuration to use the quarterly branch.

Approved by: re (implicit)

MFC [Hyper-V]: r294553, r294700

r294553

hyperv/vmbus: Lookup channel through id table

Vmbus event handler will need to find the channel by its relative
id, when software interrupt for event happens. The original lookup
searches the channel list, which is not very efficient. We now
create a table indexed by the channel relative id to speed up
the channel lookup.

Submitted by: Hongjiang Zhang <honzhan microsoft com>
Reviewed by: delphij, adrain, sephe, Dexuan Cui <decui microsoft com>
Approved by: adrian (mentor)
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D4802

-------------

r294700

hyperv/hn: Partly rework transmission path

- Avoid unnecessary malloc/free on transmission path.
- busdma(9)-fy transmission path.
- Properly handle IFF_DRV_OACTIVE. This should fix the network
stalls reported by many.
- Properly setup TSO parameters.
- Properly handle bpf(4) tapping. This 5 times the performance
during TCP sending test, when there is one bpf(4) attached.
- Allow size of chimney sending be tuned on a running system.
Default value still needs more test to determine.

Reviewed by: adrian, delphij
Approved by: adrian (mentor)
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D4972

Approved by: re (marius)
Sponsored by: Microsoft OSTC

MFC [Hyper-V]: r293719-r293722, r293869-r293871, r293873-r293875, r293877

r293719 hyperv/hn: Implement LRO
r293720 hyperv/hn: Implement SIOC[SG]IFMEDIA support
r293721 hyperv/hn: Avoid mbuf cluster allocation, if the packet is small.
r293722 hyperv/hn: Removed unused netvsc_init()
r293869 hyperv/hn: Unbreak LINT-NOIP
r293870 hyperv: use x86 generic code to do the hypervisor detection
r293871 hyperv: remove unused vmbus definitions
r293873 hyperv: implement an event timer
r293874 hyperv: add interrupt counters
r293875 hyperv: set receive buffer size according to NVSP protocol version
r293877 Unbreak `make depend` with sys/modules/hyperv/vmbus after r293870

Approved by: re (glebius), adrian (mentor)
Sponsored by: Microsoft OSTC

MFC r291156:

Ignore the inbound checksum flags when doing packet forwarding in netvsc
driver.

Sponsored by: Microsoft OSTC
PR: 203630

MFC r285785 Do not enable UDP checksum offloading when running on the
Hyper-V on Windows Server 2012 and earlier hosts.

Submitted by: whu
Reviewed by: royger
Approved by: royger
Relnotes: No
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D3217

MFC r284746 and r284889 TSO and checksum offloading support for Netvsc
driver on Hyper-V.

Submitted by: whu
Reviewed by: royger
Approved by: re
Relnotes: yes
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D2906

MFC r279819:

Fix CARP when in use in a HyperV environment:

- Bump link state when stopping or starting the interface;
- Don't handle SIOCGIFADDR specially, similar to r277103.

This change is based on a previous revision from Andy Zhang
(Microsoft) who did the diagnostic work and many thanks to
them for their help in supporting the HyperV work.

PR: kern/187203

MFC r273577:

Return BUS_PROBE_DEFAULT instead of BUS_PROBE_VENDOR or 0 for in-tree
driver. This change was verified by Microsoft.

Instant MFC approved by: re (kib)

MFC: r264177

Make some unwise casts. On i386 these casts wind up being safe. Rather
than disturb the API, go with these casts to shut gcc up.

MFC r259180 (pjd) + r263123:

Hide a few messages under bootverbose.

MFC r257369:

Don't reference pointer before testing whether it is
NULL.

Submitted by: Clement Lecigne <clecigne google com>
Reviewed by: grehan
Approved by: re (kib)

MFC r256362

Fix a lock-order reversal in the net driver by dropping the lock
and holding a reference prior to calling further into the hyperv
stack.

Added missing FreeBSD idents.

Approved by: re@ (gjb)

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

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

Import Hyper-V paravirtualized drivers from projects/hyperv
branch into head.

Approved by: re@ (hrs)
Obtained from: Microsoft, NetApp, and Citrix.

IFC @ r253862

- change the SI_SUB_RUN_SCHEDULER sysinits in hv_utilc and
hv_netvsc_drv_freebsd.c to SI_SUB_KTHREAD_IDLE, since the
former is no longer in FreeBSD.
The use of these SYSINITs can probably be removed.

Microsoft have changed their policy on how the hyper-v code will
be pulled into FreeBSD. From now, FreeBSD will be considered the
upstream repo.

First step: move the drivers away from the contrib area and into
the base system.

A follow-on commit will include the drivers in the amd64 GENERIC kernel.

Import driver source from hyperv-20130502 vendor branch.

Tag hyperv 20130502

Initial import of the Microsoft HyperV 'enlightened' drivers.

From https://github.com/FreeBSDonHyper-V/VendorBranchForFreeBSDonHyper-V
rev: 99eaa0ddb0485c9d76046664100f6beb1a0a0c58