STRUCT QIB(9)

🌸 struct qib(9) — the queue information block, bestie 🌸

okay so this is a page from the Kernel API Manual and it's literally all about struct qib, which stands for queue information block (QIB, iykyk 💅). it's a little s390 gem and honestly? iconic.

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✨ NAME ✨

struct qib — the queue information block (QIB) 🎀

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🦋 SYNOPSIS 🦋

bestie, here's the whole thing, character for character, no cap:

struct qib {
    u32 qfmt   : 8;
    u32 pfmt   : 8;
    u32 rflags : 8;
    u32 ac     : 8;
    u32 : 32;
    u64 isliba;
    u64 osliba;
    u32 : 32;
    u32 : 32;
    u8 ebcnam[8];
    u8 parm[128];
 };

yes there are some unnamed u32 : 32 fields in there just vibing — they're in the struct, they're part of the layout, we don't ask them questions 🙈

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💖 Members 💖

• qfmt — the queue format, literally what format the queue is in ✨
• pfmt — the implementation dependent parameter format (say that five times fast 😭)
• rflags — QEBSM 👑
• ac — the adapter characteristics, main character energy fr fr
• isliba — the logical address of the first input SLIB 🧚
• osliba — the logical address of the first output SLIB 🌸
• ebcnam — the adapter identifier in EBCDIC (yes, EBCDIC, we love a retro queen 💀)
• parm — the implementation dependent parameters, mysterious and undefined, we stan 🫶

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🔥 SEE ALSO 🔥

the kernel file ./arch/s390/include/asm/qdio.h and its whole friend group — go say hi to all of them:

• struct qdesfmt0(9)
• struct qdr(9)
• struct slibe(9)
• struct qaob(9)
• struct slib(9)
• struct qdio_buffer_element(9)
• struct qdio_buffer(9)
• struct sl_element(9)
• struct sl(9)
• struct slsb(9)
• struct qdio_initialize(9)

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and that's the whole page, bestie, you ate that 💅✨

this little beauty lives in ./arch/s390/include/asm and it's dated October 2026 — so it's from the future, obviously, which is very on brand for her 👑🦋💜

k bye, go read your structs 🎀