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MFHead @347527

Sponsored by: The FreeBSD Foundation

ioatcontrol(8) crc-copy flag bug and misc usage tweak

Reviewed by: cem
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D19855

MFHead@r345880

ioatcontrol(8) could exercise 8k-aligned copy with page-break, crc and
crc-copy modes.

Reviewed by: cem
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D19780

Update usage(..)

- Document missing options
- Sync options with ioatcontrol(8).
- Make it clear that the first 2 parameters are always required.

MFC after: 1 week
Sponsored by: EMC / Isilon Storage

Update usage(..)

- Document missing options
- Sync options with ioatcontrol(8).
- Make it clear that the first 2 parameters are always required.

MFC after: 1 week
Sponsored by: EMC / Isilon Storage Division

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Initialize `t` with memset(.., 0, ..)

This will help ensure that we're not using random garbage on the stack by
accident with respect to the variable

MFC after: 1 week
Sponsored by: EMC / Isilon St

Initialize `t` with memset(.., 0, ..)

This will help ensure that we're not using random garbage on the stack by
accident with respect to the variable

MFC after: 1 week
Sponsored by: EMC / Isilon Storage Division

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MFH r289384-r293170

Sponsored by: The FreeBSD Foundation

MFH @r292599

This includes the pluggable TCP framework and other chnages to the
netstack to track for VNET stability.

Security: The FreeBSD Foundation

ioatcontrol(8): Add support for interrupt coalescing

The new flag, -c <period>, sets the interrupt coalescing period in
microseconds through the new ioat(4) API ioat_set_interrupt_coalesce().

Also

ioatcontrol(8): Add support for interrupt coalescing

The new flag, -c <period>, sets the interrupt coalescing period in
microseconds through the new ioat(4) API ioat_set_interrupt_coalesce().

Also add a -z flag to zero ioat statistics before tests, to make it easy
to measure results.

Sponsored by: EMC / Isilon Storage Division

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ioat(4): Add ioatcontrol(8) testing for copy_8k

Add -E ("Eight k") and -m ("Memcpy") modes to the ioatcontrol(8) tool.

Prompted by: rpokala
Sponsored by: EMC / Isilon Storage Division

Catch up with head (r291075).

Merge from head

ioatcontrol(8): Add and document "raw" testing mode

Allows DMA from/to arbitrary KVA or physical address. /dev/ioat_test
must be enabled by root and is only R/W root, so this is approximately
as da

ioatcontrol(8): Add and document "raw" testing mode

Allows DMA from/to arbitrary KVA or physical address. /dev/ioat_test
must be enabled by root and is only R/W root, so this is approximately
as dangerous as /dev/mem and /dev/kmem.

Sponsored by: EMC / Isilon Storage Division

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Merge from head

Sponsored by: Gandi.net

ioat: Add support for Block Fill operations

The IOAT hardware supports writing a 64-bit pattern to some destination
buffer. The same limitations on buffer length apply as for copy
operations. Thro

ioat: Add support for Block Fill operations

The IOAT hardware supports writing a 64-bit pattern to some destination
buffer. The same limitations on buffer length apply as for copy
operations. Throughput is a bit higher (probably because fill does not
have to spend bandwidth reading from a source in memory).

Support for testing Block Fill has been added to ioatcontrol(8) and the
ioat_test device. ioatcontrol(8) accepts the '-f' flag, which tests
Block Fill. (If the flag is omitted, the tool tests copy by default.)
The '-V' flag, in conjunction with '-f', verifies that buffers are
filled in the expected pattern.

Tested on: Broadwell DE (Xeon D-1500)
Sponsored by: EMC / Isilon Storage Division

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Improve flexibility of ioat_test / ioatcontrol(8)

The test logic now preallocates memory before running the test.

The buffer size is now configurable. Post-copy verification is
configurable. The

Improve flexibility of ioat_test / ioatcontrol(8)

The test logic now preallocates memory before running the test.

The buffer size is now configurable. Post-copy verification is
configurable. The number of copies to chain into one transaction (one
interrupt) is configurable.

A 'duration' mode is added, which repeats the test until the duration
has elapsed, reporting the B/s and transactions completed.

ioatcontrol.8 has been updated to document the new arguments.

Initial limits (on this particular Broadwell-DE) (and when the
interrupts are working) seem to be: 256 interrupts/sec or ~6 GB/s,
whichever limit is more restrictive.

Unfortunately, it seems the interrupt-reset handling on Broadwell isn't
working as intended. That will be fixed in a later commit.

Sponsored by: EMC / Isilon Storage Division

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Merge from head

Merge r286744-r287584 from head.

Merge ^/head r286858 through r287489.

Merge from HEAD

ioatcontrol(8): Fix build

Tripped up by the FBSD SVN pre-commit hook!

Approved by: markj (mentor)
Sponsored by: EMC / Isilon Storage Division

Import ioat(4) driver

I/OAT is also referred to as Crystal Beach DMA and is a Platform Storage
Extension (PSE) on some Intel server platforms.

This driver currently supports DMA descriptors only an

Import ioat(4) driver

I/OAT is also referred to as Crystal Beach DMA and is a Platform Storage
Extension (PSE) on some Intel server platforms.

This driver currently supports DMA descriptors only and is part of a
larger effort to upstream an interconnect between multiple systems using
the Non-Transparent Bridge (NTB) PSE.

For now, this driver is only built on AMD64 platforms. It may be ported
to work on i386 later, if that is desired. The hardware is exclusive to
x86.

Further documentation on ioat(4), including API documentation and usage,
can be found in the new manual page.

Bring in a test tool, ioatcontrol(8), in tools/tools/ioat. The test
tool is not hooked up to the build and is not intended for end users.

Submitted by: jimharris, Carl Delsey <carl.r.delsey@intel.com>
Reviewed by: jimharris (reviewed my changes)
Approved by: markj (mentor)
Relnotes: yes
Sponsored by: Intel
Sponsored by: EMC / Isilon Storage Division
Differential Revision: https://reviews.freebsd.org/D3456

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