netdev - [PATCH net-next 0/3] selftests: Test XDP

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Message-ID: <20250821014023.1481662-1-dimitri.daskalakis1@gmail.com>
Date: Wed, 20 Aug 2025 18:40:20 -0700
From: Dimitri Daskalakis <dimitri.daskalakis1@...il.com>
To: "David S . Miller" <davem@...emloft.net>
Cc: Andrew Lunn <andrew+netdev@...n.ch>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Shuah Khan <shuah@...nel.org>,
	Daniel Borkmann <daniel@...earbox.net>,
	Jesper Dangaard Brouer <hawk@...nel.org>,
	Stanislav Fomichev <sdf@...ichev.me>,
	netdev@...r.kernel.org,
	linux-kselftest@...r.kernel.org
Subject: [PATCH net-next 0/3] selftests: Test XDP_TX for single-buffer

Ensure single buffer XDP functions correctly by covering the following cases:
1) Zero size payload
2) Full MTU
3) Single buffer packets through a multi-buffer XDP program

These changes were tested with netdevsim and fbnic.

 # ./ksft-net-drv/drivers/net/xdp.py
 TAP version 13
 1..10
 ok 1 xdp.test_xdp_native_pass_sb
 ok 2 xdp.test_xdp_native_pass_mb
 ok 3 xdp.test_xdp_native_drop_sb
 ok 4 xdp.test_xdp_native_drop_mb
 ok 5 xdp.test_xdp_native_tx_sb
 ok 6 xdp.test_xdp_native_tx_mb
 # Failed run: pkt_sz 2048, offset 1. Last successful run: pkt_sz 1024, offset 256. Reason: Adjustment failed
 ok 7 xdp.test_xdp_native_adjst_tail_grow_data
 ok 8 xdp.test_xdp_native_adjst_tail_shrnk_data
 # Failed run: pkt_sz 512, offset -256. Last successful run: pkt_sz 512, offset -128. Reason: Adjustment failed
 ok 9 xdp.test_xdp_native_adjst_head_grow_data
 # Failed run: pkt_sz (2048) > HDS threshold (1536) and offset 64 > 48
 ok 10 xdp.test_xdp_native_adjst_head_shrnk_data
 # Totals: pass:10 fail:0 xfail:0 xpass:0 skip:0 error:0

Dimitri Daskalakis (3):
  selftests: drv-net: xdp: Extract common XDP_TX setup/validation.
  selftests: drv-net: xdp: Add a single-buffer XDP_TX test.
  selftests: drv-net: xdp: Validate single-buff XDP_TX in multi-buff
    mode

 tools/testing/selftests/drivers/net/xdp.py | 71 ++++++++++++++++++----
 1 file changed, 58 insertions(+), 13 deletions(-)

-- 
2.47.3