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* [PATCH 0/1] usb: gadget: add raw-gadget interface
@ 2019-11-08 18:26 Andrey Konovalov
  2019-11-08 18:26 ` [PATCH 1/1] " Andrey Konovalov
  2019-11-08 21:45 ` [PATCH 0/1] " Alan Stern
  0 siblings, 2 replies; 12+ messages in thread
From: Andrey Konovalov @ 2019-11-08 18:26 UTC (permalink / raw)
  To: linux-usb, linux-kernel, Greg Kroah-Hartman, Alan Stern
  Cc: Jonathan Corbet, Felipe Balbi, Dmitry Vyukov,
	Alexander Potapenko, Marco Elver, Andrey Konovalov

This patchset (currently a single patch) adds a new userspace interface
for the USB Gadget subsystem called USB Raw Gadget (I don't mind changing
the name to something else if there are better ideas). This is what
currently being used to enable coverage-buided USB fuzzing with syzkaller:

https://github.com/google/syzkaller/blob/master/docs/linux/external_fuzzing_usb.md

Initially I was using GadgetFS (together with the Dummy HCD/UDC module)
to perform emulation of USB devices for fuzzing, but later switched to a
custom written interface. The incentive to implement a different interface
was to provide a somewhat raw and direct access to the USB Gadget layer
for the userspace, where every USB request is passed to the userspace to
get a response. See documentation for the list of differences between
Raw Gadget and GadgetFS.

This patchset has been pushed to the public Linux kernel Gerrit instance:

https://linux-review.googlesource.com/c/linux/kernel/git/torvalds/linux/+/2144

Andrey Konovalov (1):
  usb: gadget: add raw-gadget interface

 Documentation/usb/index.rst         |    1 +
 Documentation/usb/raw-gadget.rst    |   60 ++
 drivers/usb/gadget/Kconfig          |    9 +
 drivers/usb/gadget/Makefile         |    2 +
 drivers/usb/gadget/raw.c            | 1150 +++++++++++++++++++++++++++
 include/uapi/linux/usb/raw_gadget.h |  164 ++++
 6 files changed, 1386 insertions(+)
 create mode 100644 Documentation/usb/raw-gadget.rst
 create mode 100644 drivers/usb/gadget/raw.c
 create mode 100644 include/uapi/linux/usb/raw_gadget.h

-- 
2.24.0.rc1.363.gb1bccd3e3d-goog


^ permalink raw reply	[flat|nested] 12+ messages in thread

end of thread, other threads:[~2019-11-15  3:20 UTC | newest]

Thread overview: 12+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-11-08 18:26 [PATCH 0/1] usb: gadget: add raw-gadget interface Andrey Konovalov
2019-11-08 18:26 ` [PATCH 1/1] " Andrey Konovalov
2019-11-08 21:17   ` Greg Kroah-Hartman
2019-11-08 22:17     ` Andrey Konovalov
2019-11-14 15:08     ` Andrey Konovalov
2019-11-14 15:33       ` Andrey Konovalov
2019-11-15  3:20         ` Greg Kroah-Hartman
2019-11-15  3:19       ` Greg Kroah-Hartman
2019-11-08 21:45 ` [PATCH 0/1] " Alan Stern
2019-11-08 22:18   ` Andrey Konovalov
2019-11-14 15:10     ` Andrey Konovalov
2019-11-14 15:56       ` Alan Stern

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