sys: Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix

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Hyper-V: storvsc: Enhance srb_status code handling.

In hv_storvsc_io_request() when coring, prevent changing of the send channel
from the base channel to another one. storvsc_poll always probes on t

Hyper-V: storvsc: Enhance srb_status code handling.

In hv_storvsc_io_request() when coring, prevent changing of the send channel
from the base channel to another one. storvsc_poll always probes on the base
channel.

Based upon conversations with Microsoft, changed the handling of srb_status
codes. Most we should never get, others yes. All are treated as retry-able
except for two. We should not get these statuses, but if we ever do, the I/O
state is not known.

Submitted by: Alexander Sideropoulos <Alexander.Sideropoulos@netapp.com>
Reviewed by: trasz, allanjude, whu
MFC after: 1 week
Sponsored by: Netapp Inc
Differential Revision: https://reviews.freebsd.org/D25756

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storvsc: port a Linux patch, properly set residual data length on errors

This change is based on Linux commit 40630f462824ee. csio.resid should
account for transfer_len only for success and SRB_STA

storvsc: port a Linux patch, properly set residual data length on errors

This change is based on Linux commit 40630f462824ee. csio.resid should
account for transfer_len only for success and SRB_STATUS_DATA_OVERRUN
condition.

I am not sure how exactly this change works, but I have a report from a
user that they see lots of checksum errors when running a pool scrub
concurrently with iozone -l 1 -s 100G. After applying this patch the
problem cannot be reproduced.

Reviewed by: nobody
Sponsored by: CyberSecure
Differential Revision: https://reviews.freebsd.org/D22312

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sys/dev: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error

sys/dev: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

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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

hyperv/storvsc: Fixup SRB status.

This unbreaks GEN2 Hyper-V cd support.

Submitted by: Hongjiang Zhang <honzhan microsoft com>
Reviewed by: dexuan@
MFC after: 3 days
Sponsored by: Microsoft
Differe

hyperv/storvsc: Fixup SRB status.

This unbreaks GEN2 Hyper-V cd support.

Submitted by: Hongjiang Zhang <honzhan microsoft com>
Reviewed by: dexuan@
MFC after: 3 days
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D10212

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Merge ^/head r304700 through r304884.

MFhead @ r304815

hyperv/storvsc: Increase queue depth and rework channel selection.

- Increasing queue depth gives ~100% performance improvement for
randwrite fio test in Azure.
- New channel selection, which take

hyperv/storvsc: Increase queue depth and rework channel selection.

- Increasing queue depth gives ~100% performance improvement for
randwrite fio test in Azure.
- New channel selection, which takes LUN id and the current cpuid
into consideration, gives additional ~20% performance improvement
for ranwrite fio test in Azure.

Submitted by: Hongzhang Jiang <honzhan microsoft com>
Modified by: sephe
MFC after: 1 week
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D7622

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Merge ^/head r304236 through r304536.

hyperv/storvsc: Deliver CAM_SEL_TIMEOUT upon SRB status error.

SRB status is set to 0x20 by the hypervisor, if the specified LUN is
unaccessible, and even worse the INQUIRY response will not be set

hyperv/storvsc: Deliver CAM_SEL_TIMEOUT upon SRB status error.

SRB status is set to 0x20 by the hypervisor, if the specified LUN is
unaccessible, and even worse the INQUIRY response will not be set by
the hypervisor at all under this situation. Additionally, SRB status
is 0x20 too, for TUR on an unaccessible LUN.

Deliver CAM_SEL_TIMEOUT to CAM upon SRB status errors as suggested by
Scott Long, other values seems improper.

This commit fixes the Hyper-V disk hotplug support.

Submitted by: Hongjiang Zhang <honzhan microsoft com>
MFC after: 3 days
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D7521

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hyperv/stor: Enable INQUIRY result check only on WIN10 like host systems

On WIN8 like host systems, when rescan happens, the already installed
disks seem to return random invalid results for INQUIRY

hyperv/stor: Enable INQUIRY result check only on WIN10 like host systems

On WIN8 like host systems, when rescan happens, the already installed
disks seem to return random invalid results for INQUIRY.

More investigation is under way to figure out why random invalid INQUIRY
results are delivered to VM on WIN8 like host systems.

Submitted by: Hongjiang Zhang <honzhan microsoft com>
Reviewed by: sephe
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D6316

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Catch up with HEAD (r280229-r284686).

MFH: r282615-r283655

Sponsored by: The FreeBSD Foundation

Merge sync of head

Add support for SCSI disk hot add and remove. Also add padding according to
the requirement of different hypervisor releases.

Submitted by: whu
Reviewed by: royger
Approved by: royger
MFC after: 1 w

Add support for SCSI disk hot add and remove. Also add padding according to
the requirement of different hypervisor releases.

Submitted by: whu
Reviewed by: royger
Approved by: royger
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D2512

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Merge from head

MFH: r281855-r282312

Sponsored by: The FreeBSD Foundation

Microsoft vmbus, storage and other related driver enhancements for HyperV.
- Vmbus multi channel support.
- Vector interrupt support.
- Signal optimization.
- Storvsc driver performan

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

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MFC @ r259205 in preparation for some SVM updates. (for real this time)

Merge head r233826 through r256722.

Merge head@256284