qla_req_ring_slot(9)

✨ qla_req_ring_slot(9) ✨

okay so bestie, welcome to the Kernel API Manual — today's main character is qla_req_ring_slot(9) and honestly? she's a little sleeper hit 🎀

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🌸 NAME 🌸

qla_req_ring_slot — hands you back the current producer slot on the request ring 💫

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🦋 SYNOPSIS 🦋

void * qla_req_ring_slot (struct qla_hw_data *ha , struct req_que *req
);

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💅 ARGUMENTS 💅

• ha — the HBA pointer, aka your hardware baddie 🫶
• req — the request queue, the whole vibe of this function tbh

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✨ DESCRIPTION ✨

So here's the tea ☕ — this one behaves differently depending on which adapter you're on, and she does <emphasis>not</emphasis> do the same thing twice:

• On 29xx, the firmware-visible ring uses 128-byte-strided entries referenced by ring_ext_ptr 🔥
• On earlier adapters, it's the 64-byte ring referenced by ring_ptr instead 💜

The pointer you get back is layout-compatible with request_t for common header writes — so if you're just doing the usual header stuff, you're chilling 😌

but listen bestie, if you need the 29xx-specific fields you have to cast to struct request_ext. no cap, don't skip that 🚨

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🌈 SEE ALSO 🌈

Kernel file ./drivers/scsi/qla2xxx/qla_inline.h and the whole friend group:

• qla24xx_calc_iocbs(9)
• qla29xx_calc_iocbs(9)
• qla_req_entry_size(9)
• qla_rsp_entry_size(9)
• qla_sts_cont_data_size(9)
• qla_logio_set_vp_index(9)
• qla_rsp_ring_advance(9)
• qla_req_ring_advance(9)
• qla_rsp_ring_rewind_to(9)

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and that's the whole page, periodt 💖 brought to you by the lovely people over at ./drivers/scsi/qla2xxx, dated October 2026, and yes the page itself is still called qla_req_ring_slot(9) — slay 🧚⭐