sys: Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

Switch to contigmalloc in the Hyper-V code

In the Hyper-V drivers we need to allocate buffers shared between the
host and guest. This memory has been allocated with bus_dma, however
it doesn't use t

Switch to contigmalloc in the Hyper-V code

In the Hyper-V drivers we need to allocate buffers shared between the
host and guest. This memory has been allocated with bus_dma, however
it doesn't use this correctly, e.g. it is missing calls to
bus_dmamap_sync. Along with this on arm64 we need this memory to be
mapped with the correct memory type that bus_dma may not use.

Switch to contigmalloc to allocate this memory as this will correctly
allocate cacheable memory.

Reviewed by: Souradeep Chakrabarti <schakrabarti@microsoft.com>
Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D40227

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Hyper-V: hn: Enable vSwitch RSC support in hn netvsc driver

Receive Segment Coalescing (RSC) in the vSwitch is a feature available in
Windows Server 2019 hosts and later. It reduces the per packet p

Hyper-V: hn: Enable vSwitch RSC support in hn netvsc driver

Receive Segment Coalescing (RSC) in the vSwitch is a feature available in
Windows Server 2019 hosts and later. It reduces the per packet processing
overhead by coalescing multiple TCP segments when possible. This happens
mostly when TCP traffics are among different guests on same host.
This patch adds netvsc driver support for this feature.

The patch also updates NVS version to 6.1 as needed for RSC
enablement.

MFC after: 2 weeks
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D29075

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MFHead @r350386

Sponsored by: The FreeBSD Foundation

hyperv/vmbus: Update VMBus version 4.0 and 5.0 support.

Add VMBus protocol version 4.0. and 5.0 to support Windows 10 and newer HyperV hosts.

For VMBus 4.0 and newer HyperV, the netvsc gpadl teardo

hyperv/vmbus: Update VMBus version 4.0 and 5.0 support.

Add VMBus protocol version 4.0. and 5.0 to support Windows 10 and newer HyperV hosts.

For VMBus 4.0 and newer HyperV, the netvsc gpadl teardown must be done after vmbus close.

Submitted by: whu
MFC after: 2 weeks
Sponsored by: Microsoft

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Merge ^/head r323559 through r325504.

MFhead@r324497

hyperv/hn: Workaround erroneous hash type observed on WS2016.

Background:
- UDP 4-tuple hash type is unconditionally enabled in Hyper-V on WS2016,
which is _not_ affected by NDIS_OBJTYPE_RSS_PARAM

hyperv/hn: Workaround erroneous hash type observed on WS2016.

Background:
- UDP 4-tuple hash type is unconditionally enabled in Hyper-V on WS2016,
which is _not_ affected by NDIS_OBJTYPE_RSS_PARAMS.
- Non-fragment UDP/IPv4 datagrams' hash type is delivered to VM as
TCP_IPV4.

Currently this erroneous behavior only applies to WS2016/Windows10.

Force l3/l4 protocol check, if the RXed packet's hash type is TCP_IPV4,
and the Hyper-V is running on WS2016/Windows10. If the RXed packet is
UDP datagram, adjust mbuf hash type to UDP_IPV4.

MFC after: 3 days
Sponsored by: Microsoft

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MFhead@r320180

hyperv/hn: Fix MTU setting

- Add size of an ethernet header to the value configured to NVS. This
does not seem to have any effects if MTU is 1500, but fix hypervisor
side's setting if MTU > 150

hyperv/hn: Fix MTU setting

- Add size of an ethernet header to the value configured to NVS. This
does not seem to have any effects if MTU is 1500, but fix hypervisor
side's setting if MTU > 1500.
- Override the MTU setting according to the view from the hypervisor
side.

MFC after: 1 week
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D12352

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Merge ^/head r322398 through r322746.

MFhead@r322515

hyperv: Update copyright for the files changed in 2017

MFC after: 3 days
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D11982

Merge ^/head r314482 through r314522.

hyperv/hn: Misaligned chimney sending buffers should not be used

MFC after: 1 week
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D9714

MFhead@r313243

Merge ^/head r312624 through r312719.

hyperv/hn: add the support for VF drivers (SR-IOV)

Hyper-V's NIC SR-IOV implementation needs a Hyper-V synthetic NIC and
a VF NIC to work together (both NICs have the same MAC address), mainly to
su

hyperv/hn: add the support for VF drivers (SR-IOV)

Hyper-V's NIC SR-IOV implementation needs a Hyper-V synthetic NIC and
a VF NIC to work together (both NICs have the same MAC address), mainly to
support seamless live migration.

When the VF device becomes UP (or DOWN), the synthetic NIC driver needs
to switch the data path from the synthetic NIC to the VF (or the opposite).

Note: multicast/broadcast packets are still received through the synthetic
NIC and we need to inject the packets through the VF interface (if the VF is
UP), even if the synthetic NIC is DOWN (so we need to force the rxfilter
to be NDIS_PACKET_TYPE_PROMISCUOUS, when the VF is UP).

Reviewed by: sephe
Approved by: sephe (mentor)
MFC after: 2 weeks
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D8964

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Merge ^/head r309213 through r309262.

hyperv/hn: Fix attach error handling

MFC after: 1 week
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D8620

hyperv/hn: Fix detach error handling.

MFC after: 1 week
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D8613

hyperv/hn: Utilize vmbus_chan_xact_wait

MFC after: 1 week
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D8612

Merge ^/head r308870 through r309105.

hyperv/hn: Fix primary channel revocation

Since hypervisor will not drain the TX bufring, once the channels are
revoked:
- Setup vmbus orphan handler properly.
- Make sure that suspension will not w

hyperv/hn: Fix primary channel revocation

Since hypervisor will not drain the TX bufring, once the channels are
revoked:
- Setup vmbus orphan handler properly.
- Make sure that suspension will not wait the TX bufring draining
forever.
- GC the pending TX descs on detach path, before freeing the busdma
stuffs.

MFC after: 1 week
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D8559

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hyperv/hn: Fix WITNESS warnings

And re-enable SIOCADDMULTI/SIOCDELMULTI, after WITNESS warning is fixed.

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

hyperv/hn: Fix WITNESS warnings

And re-enable SIOCADDMULTI/SIOCDELMULTI, after WITNESS warning is fixed.

MFC after: 1 week
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D8489

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