[PATCH net-next V5 0/5] net: netdevsim: hook in XDP handling

[Mohsin Bashir <mohsin.bashr@gmail.com>]

This patch series add tests to validate XDP native support for PASS,
DROP, ABORT, and TX actions, as well as headroom and tailroom adjustment.
For adjustment tests, validate support for both the extension and
shrinking cases across various packet sizes and offset values.

The pass criteria for head/tail adjustment tests require that at-least
one adjustment value works for at-least one packet size. This ensure
that the variability in maximum supported head/tail adjustment offset
across different drivers is being incorporated.

The results reported in this series are based on fbnic. However, the
series is tested against multiple other drivers including netdevism.

Note: The XDP support for fbnic will be added later.
---
Change-log:
V5:
  - Fix warning caused by rcu_dereference() in p1
  - Fix checkpatch warnings with P3, P4, and P5
V4: https://lore.kernel.org/netdev/20250714210352.1115230-1-mohsin.bashr@gmail.com
V3: https://lore.kernel.org/netdev/20250712002648.2385849-1-mohsin.bashr@gmail.com
V2: https://lore.kernel.org/netdev/20250710184351.63797-1-mohsin.bashr@gmail.com
V1: https://lore.kernel.org/netdev/20250709173707.3177206-1-mohsin.bashr@gmail.com

Jakub Kicinski (1):
  net: netdevsim: hook in XDP handling

Mohsin Bashir (4):
  selftests: drv-net: Test XDP_PASS/DROP support
  selftests: drv-net: Test XDP_TX support
  selftests: drv-net: Test tail-adjustment support
  selftests: drv-net: Test head-adjustment support

 drivers/net/netdevsim/netdev.c                |  19 +-
 tools/testing/selftests/drivers/net/Makefile  |   1 +
 tools/testing/selftests/drivers/net/xdp.py    | 656 ++++++++++++++++++
 .../selftests/net/lib/xdp_native.bpf.c        | 540 ++++++++++++++
 4 files changed, 1215 insertions(+), 1 deletion(-)
 create mode 100755 tools/testing/selftests/drivers/net/xdp.py
 create mode 100644 tools/testing/selftests/net/lib/xdp_native.bpf.c

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2.47.1