STRUCT MV88E6XXX_DEVLINK_STU_ENTRY(9)

✨ NAME ✨

struct mv88e6xxx_devlink_stu_entry — literally the Devlink STU entry, bestie 💅 this is from the Kernel API Manual and it's a whole vibe

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🎀 SYNOPSIS 🎀

struct mv88e6xxx_devlink_stu_entry {
    u16 sid;
    u16 vid;
    u16 data[3];
    u16 resvd;
 };

okay so that's the whole struct, no cap — five fields, that's her 👑

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💖 Members 💖

• sid — Global1/3: the SID, plus the unknown filters and learning. she's the main character of this struct fr fr 🔥
• vid — Global1/6: the Valid bit. one bit, but she's holding the whole thing together 🫶
• data — Global1/7-9: the membership data and priority override. three ([3]!) u16's of pure membership info 💜
• resvd — Reserved. In case we forgot something 🙈 honestly relatable, keeping a little cushion just in case

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🌸 Description 🌸

okay so the STU entry format is NOT consistent between chipset generations — it literally varies, bestie 😭

Peridot and Amethyst pack the STU data into Global1/7-8. Older silicon spreads the information across all three VTU data registers — inheriting the layout of even older hardware that had no STU at all. the way that lineage goes back generations... iconic honestly 👑

and because this is a low-level debug interface, the move is: copy all data verbatim and defer parsing to the consumer. no cleverness, no parsing here, just straight copying — she's a courier not a translator 💅✨

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🦋 SEE ALSO 🦋

• Kernel file ./drivers/net/dsa/mv88e6xxx/devlink.c — go read it, iykyk 📖
• struct mv88e6xxx_devlink_vtu_entry(9) — her sibling!! same energy, different registers 💖

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okay that's the whole page, you ate that 🍓 and just so you know where it lives and when it dropped: it's from ./drivers/net/dsa/mv88e6xxx, dated October 2026 — periodt 💅🎀