tb_switch_find_vse_cap(9)

✨ tb_switch_find_vse_cap(9) ✨

okay bestie, welcome to the Kernel API Manual 💖 this is the page for tb_switch_find_vse_cap and it's lowkey a little detective story, no cap 🕵️‍♀️

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🌸 NAME 🌸

tb_switch_find_vse_cap — find switch vendor specific capability 🎀

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🦋 SYNOPSIS 🦋

int tb_switch_find_vse_cap (struct tb_switch *sw , enum
tb_switch_vse_cap vsec );

like, there it is, exactly as written, don't come for me 💅

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🍓 ARGUMENTS 🍓

• sw — the switch you're hunting the capability for, the main character of this whole operation 👑
• vsec — the vendor specific capability you're looking for, i.e. the thing you actually want 🔍

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🧚 DESCRIPTION 🧚

so what does this function do, you ask? it enumerates the vendor specific capabilities (VSEC) of a switch, and when it finds the one matching vsec, it returns the offset. that's it, that's the whole vibe ✨ literally just scrolling the list until it goes "yep, that one" 🫶

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🌈 RETURN 🌈

• Offset of capability — on success 🎉 slay.
• -ENOENT — if the capability was not found 😭 it's giving "not in my house".
• Negative errno — another error occurred 💀 something else went sideways.

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💜 SEE ALSO 💜

• Kernel file ./drivers/thunderbolt/cap.c
• tb_port_next_cap(9)
• tb_port_find_cap(9)
• tb_switch_next_cap(9)
• tb_switch_find_cap(9)

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okay that's the whole page, go read the friends too, iykyk 🦋 and this gem lives over in ./drivers/thunderbolt, dated October 2026 — mwah, bye bestie, ily, stay cap-hunting 💖🎀⭐