efx_fill_loopback_test(9)

okay bestie, this is the efx_fill_loopback_test(9) page from the Kernel API Manual, and we’re gonna make it make sense fr fr 💖

💖 NAME 💖

efx_fill_loopback_test — fill in a block of loopback self-test entries. that’s the whole name vibe, no cap ✨

🦋 SYNOPSIS 🦋

int efx_fill_loopback_test (struct efx_nic *efx , struct
       efx_loopback_self_tests *lb_tests , enum efx_loopback_mode mode ,
       unsigned int test_index , u8 *strings , u64 *data );

🌸 ARGUMENTS 🌸

• efx — Efx NIC 🫶
• lb_tests — Efx loopback self-test results structure 💅
• mode — Loopback test mode ✨
• test_index — Starting index of the test 🎀
• strings — Ethtool strings, or NULL 🦋
• data — Ethtool test results, or NULL 🌈

✨ DESCRIPTION ✨

okay so the whole vibe is: this fills in a block of loopback self-test entries, and then it returns the new test index. that’s it, that’s the function, periodt 💅🔥

lowkey important: strings can be NULL, and data can be NULL too — the manpage said it, so we’re saying it 🫶

🎀 SEE ALSO 🎀

• Kernel file ./drivers/net/ethernet/sfc/siena/ethtool_common.c 👑
• efx_fill_test(9), efx_ethtool_fill_self_tests(9) 🌟

and that’s the whole page, bestie 🫶 — cute little sign-off time: source/version ./drivers/net/ethernet/sfc/siena, date October 2026, and efx_fill_loopback_test(9) holding it down at the bottom. mwah 💋✨