netdev - [PATCH net-next V3 0/4] selftests: drv-net: Test XDP native support

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Message-ID: <20250712002648.2385849-1-mohsin.bashr@gmail.com>
Date: Fri, 11 Jul 2025 17:26:44 -0700
From: Mohsin Bashir <mohsin.bashr@...il.com>
To: netdev@...r.kernel.org
Cc: kuba@...nel.org,
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Subject: [PATCH net-next V3 0/4] selftests: drv-net: Test XDP native support

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:
V3:
  P1: Remove exception handling upon xdp attachment failure for better
      debuggability
  P4: Handle the bound issue with the use of bpf_xdp_load_bytes()

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

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

 tools/testing/selftests/drivers/net/Makefile  |   1 +
 tools/testing/selftests/drivers/net/xdp.py    | 656 ++++++++++++++++++
 .../selftests/net/lib/xdp_native.bpf.c        | 538 ++++++++++++++
 3 files changed, 1195 insertions(+)
 create mode 100755 tools/testing/selftests/drivers/net/xdp.py
 create mode 100644 tools/testing/selftests/net/lib/xdp_native.bpf.c

-- 
2.47.1