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spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD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

libusb(3): Implement libusb_init_context() and the needed structures and definitions.

Differential Revision: https://reviews.freebsd.org/D38212
MFC after: 1 week
Sponsored by: NVIDIA Networking

libusb(3): Implement libusb_interrupt_event_handler() by exposing existing function.

MFC after: 1 week
Sponsored by: NVIDIA Networking

libusb(3): Ignore SIGPIPE when initializing the LibUSB v1.0 API.

The LibUSB v1.0 emulation layer uses pipes internally to signal between
threads. When USB devices are reset, as part of loading firmware, SIGPIPE
may happen, and that is expected and should be ignored.

PR: 261891
MFC after: 1 week
Sponsored by: NVIDIA Networking

Improve handling of USB device re-open in the LibUSB v1.x API.

Make sure the "device_is_gone" flag is cleared after every successful open,
so that the "device_is_gone" flag doesn't persist forever.

Found by: sergii.dmytruk@3mdeb.com
PR: 256296
MFC after: 1 week
Sponsored by: Mellanox Technologies // NVIDIA Networking

libusb: improve compatibility

Specifically, add LIBUSB_CLASS_PHYSICAL and the libusb_has_capability API.
Descriptions and functionality for these derived from the
documentation at [0]. The current set of capabilities are all supported by
libusb.

These were detected as missing after updating net/freerdp to 2.1.1, which
attempted to use both.

[0] http://libusb.sourceforge.net/api-1.0/group__libusb__misc.html

Reviewed by: hselasky
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D25194

libusb: LIBUSB_DEBUG environment variable override of libusb_set_debug

The debug level generally just controls verbosity of libusb for debugging
libusb devices/usage. We allow the environment to set the debug level
independent of the application, but the application will always override
this if it explicitly sets the debug level.

Changing the environment is easy, but patching the software to change the
debug level isn't necessarily easy or possible. Further, there's this
write-only debug_fixed variable that would seem to imply that the debug
level should be fixed, but it isn't currently used. Change the logic to use
strtol() so we can detect real 0 vs. conversion failure, then honor
debug_fixed in libusb_set_debug.

Reviewed by: hselasky
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D21877

Fix typos in libusb.

Found by: Denis Ahrens <denis@h3q.com>
MFC after: 1 week
Sponsored by: Mellanox Technologies

Fix issues about cancelling USB transfers in LibUSB when the USB device has
been detached. When a USB device has been detached the kernel file handle
stops responding to commands. USB applications which continue to run after
the USB device has been detached, depend on LibUSB generated events to tear
down its pending USB transfers. Add code to handle the needed cleanup when
processing the USB transfer(s) fails and prevent new USB transfer(s) from
being submitted.

Found by: Ludovic Rousseau <ludovic.rousseau+freebsd@gmail.com>
PR: 231076
MFC after: 1 week
Approved by: re (gjb)
Sponsored by: Mellanox Technologies

lib: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using mis-identified 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.

Update several more URLs

- Primarily http -> https
- Primarily FreeBSD project URLs

Add support for USB streams to the LibUSB v1.0 API and update the
libusb(3) manual page.

Approved by: re (gjb)
Requested by: swills
MFC after: 1 week

Implement libusb_hotplug_register_callback() and
libusb_hotplug_deregister_callback() for the LibUSB v1.0 API and
update the libusb(3) manual page.

Approved by: re (kib)
Requested by: swills
MFC after: 1 week

Add missing return statement.

Approved by: re (gjb)
MFC after: 1 week

Add support for libusb_set_auto_detach_kernel_driver() to the LibUSB v1.0 API.

Approved by: re (kostikbel)
Requested by: swills
MFC after: 1 week

Add support for libusb_get_port_number() to the LibUSB v1.0 API.

Approved by: re (kostikbel)
Requested by: swills
MFC after: 1 week

Implement libusb_get_version() and update libusb manual page.

Approved by: re (glebius)
Requested by: swills
MFC after: 1 week

Implement code to stop all USB endpoints before executing a USB device
reset command, alternate setting command or set configuration
command. Else LibUSB v1.0 will not re-open the endpoints which the
kernel closes and the USB application might wait infinitely for
transfers to complete.

Approved by: re (hrs)
MFC after: 3 days

Remove unused variables to silence CLANG warnings.
Remove some BLANK lines and unnecessary TABS.

Differential Revision: D2687
Reviewed by: rodrigc, hselasky

Tune buffer sizes for SuperSpeed USB when using LibUSB v0.1 and v1.0
APIs to increase the maximum bandwidth limit.

MFC after: 1 week

Comply to the official LibUSB v1.0 API:
"It is legal to attempt to claim an already-claimed interface."

MFC after: 1 week

Add libusb_get_port_numbers

libusbx deprecated libusb_get_port_path and replaced it with
libusb_get_port_numbers. The latter omits an extra parameter which was
unused in the FreeBSD implementation anyway.

Add libusb_get_port_path wrapper

This follows the libusbx API reference at
http://libusbx.sourceforge.net/api-1.0/group__dev.html

Reviewed by: hselasky@

- Make the FreeBSD's USB library compile under Linux.
- Fix a compile warning where the return value of a call
to a write() function was ignored.
- Remove redundant include files from userland USB header files.
- Add some now needed include files to various C-files.

LibUSB v1.0 API compiliance and bugfixes.

- Use CLOCK_MONOTONIC instead of CLOCK_REALTIME, because CLOCK_MONOTONIC
does not wrap into negative in near future. This fixes any potential
problems using "pthread_cond_timedwait()".

- Fix a bug where the "libusb_wait_for_event()" function computes an
absolute timeout instead of a relative timeout. USB transfers do
not depend on this timeout value.

- Add dependency towards LibPthread to Makefile, because LibUSB v1.0
needs this library to function correctly.

MFC after: 1 week

Fix binary compatibility to the official LibUSB 1.0.
This is useful for GNU/kFreeBSD and the libusb2debian port.
Applications using the asynchronous API of LibUSB 1.0 needs
to be recompiled after this update.

Found by: lme @

Fix some compile warnings.

MFC after: 1 week

Add missing LibUSB 1.0 API function.

Reported by: lme @
MFC after: 1 week

Simplify libusb_open_device_with_vid_pid(): Only set
pdev to non-NULL on success instead of unconditonally
setting it and maybe resetting it later.

Submitted by: Christoph Mallon
MFC after: 3 days

libusb_open() sets the given device handle to NULL if it
fails, so there is no need to do it again after returning.

Submitted by: Christoph Mallon
MFC after: 3 days

Fix how libusb20_dev_kernel_driver_active() and
libusb_dev_kernel_driver_active() works. In case of
libusb20 the manpage was wrong and in case of
libusb10 the implementation was wrong.

Submitted by: Kai Wang
MFC after: 3 days

Implement missing USB debug information functions.

Approved by: re (kib)
MFC after: 1 week

Use correct enum instead of constant value.

MFC after: 1 week
Spotted by: scf @
Approved by: re (kib)

Add missing function to get device speed to the LibUSB v1.0 API.

MFC after: 1 week
Approved by: re (kib)

- Add two missing functions to the LibUSB v0.1 API.
- Clamp the string length to 255 bytes when getting
the interface description.
- Clamp data request length to 65535 bytes when doing
control requests.

MFC after: 3 days

LibUSB v1.0: Need at least one frame when doing the dummy open
else clear stall won't work in that case.

- Add support for software pre-scaling of ISOCHRONOUS transfers.

MFC after: 14 days
Approved by: thompsa (mentor)

Fix LibUSB v1.0 compliancy.

1) We need to allow the USB callback to free the USB transfer itself.
2) The USB transfer buffer should only be automatically freed when
freeing the USB transfer.

Fixed by: hselasky
Submitted by: Gustau Perez i Querol
Approved by: thompsa (mentor)

A new jail(8) with a configuration file, to replace the work currently done
by /etc/rc.d/jail.

- Add missing LibUSB API functions:
* libusb_strerror()
* libusb_get_driver[_np]()
* libusb_detach_kernel_driver[_np]()
- Factor out setting of non-blocking flag inside libusb.
- Add missing NULL check after libusb_get_device() call.
- Correct some wrong error codes due to copy and paste error.

PR: usb/150546
Submitted by: Robert Jenssen, Alexander Leidinger
Approved by: thompsa (mentor)

LibUSB (new API):
- Add a new API function to check the connected
status of the USB handle in the LibUSB v1.0 and
LibUSB v0.1 interfaces.

Approved by: thompsa (mentor)

MFC r208020

Fix header file compliancy with libusb 1.0 from sourceforge.

Fix header file compliancy with libusb 1.0 from sourceforge.

Reported by: Xiaofan Chen
Submitted by: Hans Petter Selasky

Create the altix project branch. The altix project will add support
for the SGI Altix 350 to FreeBSD/ia64. The hardware used for porting
is a two-module system, consisting of a base compute module and a
CPU expansion module. SGI's NUMAFlex architecture can be an excellent
platform to test CPU affinity and NUMA-aware features in FreeBSD.

Resort includes to match style(9) a bit more. No functional change
is expected after this commit.

Tested by: make buildworld
Reviewed by: hps (patch without .h changes)

Use more standard way for setting nonblocking flag for a filedescriptor.
This makes libusb porting a bit easier.

There shouldn't by any negative change in behaviour after this commit.

Remove redundant headers.

Reviewed by: hps@

Merge from head to stable/8:

r200424:
Fix libusb_open_device_with_vid_pid() to return a NULL if no device is
found instead of the last device in its search list.

Reviewed by: thompsa

Fix libusb_open_device_with_vid_pid() to return a NULL if no device is
found instead of the last device in its search list.

Reviewed by: thompsa
MFC after: 5 days

MFC r199575

- fix a transfer cancelling bug/segfault [1]
- correct a return code in the transfer cancel function.
- add new API function, libusb20_tr_bulk_intr_sync().

Submitted by: HPS
Reported by: Robert Jenssen [1]

Sync to P4
- fix a transfer cancelling bug/segfault [1]
- correct a return code in the transfer cancel function.
- add new API function, libusb20_tr_bulk_intr_sync().

Submitted by: HPS
Reported by: Robert Jenssen [1]

MFC r199055

- fix refcounting error during data transfer
- fix a memory leak on the USB backend
- fix invalid pointer computations (in one case memory outside the allocated
area was written in LibUSB v1.0)
- make sure memory is always initialised, also in failing cases
- add missing functions from v1.0.4

PR: usb/140325

- fix refcounting error during data transfer
- fix a memory leak on the USB backend
- fix invalid pointer computations (in one case memory outside the allocated
area was written in LibUSB v1.0)
- make sure memory is always initialised, also in failing cases
- add missing functions from v1.0.4

PR: usb/140325
Reported by: Robert Jenssen
Submitted by: Hans Petter Selasky
MFC After: 3 days

LibUSB v1.0:

- Significantly improve libusb10 support.
- Many minor issues fixed.
- P4 ID: 166189, 165853, 165991, 166052, 166069

Submitted by: hps
Approved by: re

Sync the libusb 1.0 exported api to the latest GSoC code.

- Fix possible uninitialised variables and null derefs
- Support big transfers
- Various bug fixes and style changes

Submitted by: Sylvestre Gallon
Sponsored by: Google Summer of Code 2009
Approved by: re (kib)

Add files missed in r194674.

Add libusb 1.0 support which is compatible with the latest revision on
Sourceforge. Libusb 1.0 is a portable usb api released December 2008 and
supersedes the original libusb released 10 years ago, it supports isochronous
endpoints and asynchronous I/O. Many applications have already started using
the interfaces.

This has been developed as part of Google Summer of Code this year by Sylvestre
Gallon and has been cribbed early due to it being desirable in FreeBSD 8.0

Submitted by: Sylvestre Gallon
Sponsored by: Google Summer of Code 2009
Reviewed by: Hans Petter Selasky