[PATCH liburing v3 0/5] Add basic test for nvme uring passthrough commands

[Ankit Kumar <ankit.kumar@samsung.com>]

This patchset adds a way to test NVMe uring passthrough commands with
nvme-ns character device. The uring passthrough was introduced with 5.19
io_uring.

To send nvme uring passthrough commands we require helpers to fetch NVMe
char device (/dev/ngXnY) specific fields such as namespace id, lba size etc.

How to run:
./test/io_uring_passthrough.t /dev/ng0n1

It requires argument to be NVMe device, if not the test will be skipped.

The test covers write/read with verify for sqthread poll, vectored / nonvectored
and fixed IO buffers, which can be extended in future. As of now iopoll is not
supported for passthrough commands, there is a test for such case.

Changes from v2 to v3
 - Skip test if argument is not nvme device and remove prints, as
   suggested by Jens.
 - change nvme helper function name, as pointed by Jens.
 - Remove wrong comment about command size, as per Kanchan's review

Ankit Kumar (5):
  configure: check for nvme uring command support
  io_uring.h: sync sqe entry with 5.20 io_uring
  nvme: add nvme opcodes, structures and helper functions
  test: add io_uring passthrough test
  test/io_uring_passthrough: add test case for poll IO

 configure                       |  20 ++
 src/include/liburing/io_uring.h |  17 +-
 test/Makefile                   |   1 +
 test/io_uring_passthrough.c     | 390 ++++++++++++++++++++++++++++++++
 test/nvme.h                     | 168 ++++++++++++++
 5 files changed, 594 insertions(+), 2 deletions(-)
 create mode 100644 test/io_uring_passthrough.c
 create mode 100644 test/nvme.h

-- 
2.17.1