[PATCH liburing v2 0/4] add basic zero copy receive support

[David Wei <dw@davidwei.uk>]

Add basic support for io_uring zero copy receive in liburing. Besides
the mandatory syncing of necessary liburing.h headers, add a thin
wrapper around the registration op and a unit test.

Users still need to setup by hand e.g. mmap, setup the registration
structs, do the registration and then setup the refill queue struct
io_uring_zcrx_rq.

In the future, I'll add code to hide the implementation details. But for
now, this unblocks the kernel selftest.

Changes in v2:
--------------
* Split out linux/io_uring.h header sync changes
* Move exporting io_uring_register_ifq() to LIBURING_2.10 section

David Wei (4):
  liburing: sync io_uring headers
  zcrx: sync io_uring headers
  zcrx: add basic support
  zcrx: add unit test

 src/include/liburing.h          |  12 +
 src/include/liburing/io_uring.h |  62 ++-
 src/liburing-ffi.map            |   2 +
 src/liburing.map                |   2 +
 src/register.c                  |   6 +
 test/Makefile                   |   1 +
 test/zcrx.c                     | 918 ++++++++++++++++++++++++++++++++
 7 files changed, 1001 insertions(+), 2 deletions(-)
 create mode 100644 test/zcrx.c

-- 
2.43.5