ef4_ethtool_fill_self_tests(9)

💅 ef4_ethtool_fill_self_tests(9) — Kernel API Manual ✨

okay so bestie, we're in the Kernel API Manual today and the star of the show is ef4_ethtool_fill_self_tests. she's giving driver-internals main character energy and honestly? she ate. 🎀

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🌸 NAME 🌸

ef4_ethtool_fill_self_tests — literally just get self-test details, that's it, that's the whole vibe 🦋

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✨ SYNOPSIS ✨

int ef4_ethtool_fill_self_tests (struct ef4_nic *efx , struct
       ef4_self_tests *tests , u8 *strings , u64 *data );

like, one function, four args, no drama (well, okay, some drama — see the DESCRIPTION) 💖

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🫶 ARGUMENTS 🫶

• efx — the Efx NIC itself, your actual network card babe, the whole reason we're here 👑
• tests — the Efx self-test results structure, or NULL (yes, NULL is a valid choice here, we love a flexible queen) 🙈
• strings — ethtool strings, or NULL (again, NULL is fine, no judgement) 🌸
• data — ethtool test results, or NULL (third time's the charm, NULL-friendly fr fr) ⭐

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💜 DESCRIPTION 💜

so what she actually does: get the self-test number of strings, the strings themselves, and/or the test results. return value is the number of strings — and lowkey that's == the number of test results, so if you were wondering, yeah, they match. 💅

now here's the tea, the lore, the why ☕ — the reason for merging these three functions is to make sure that they can never be inconsistent. like, ever. no cap. that's the whole design philosophy and honestly it's iconic. 🔥

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/net/ethernet/sfc/falcon/ethtool.c
• ef4_fill_test(9)
• ef4_fill_loopback_test(9)

go read those too, iykyk 🧚

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okay that's the whole page bestie, you're officially educated 💖 this lil slice of kernel API manual lives in ./drivers/net/ethernet/sfc/falcon and it's dated October 2026 — and the title, obviously, is ef4_ethtool_fill_self_tests(9). slay, go forth and fill those self-tests 🌟