qla29xx_calc_iocbs(9)

💖 qla29xx_calc_iocbs 💖

okay bestie, welcome to the Kernel API Manual ✨ this one is all about qla29xx_calc_iocbs, and it’s here to figure out how many Command-Type and Continuation IOCBs you need to allocate for the 29xx extended (128-byte) IOCB ring 💅

🌸 NAME 🌸

qla29xx_calc_iocbs — Determine number of Command-Type and Continuation IOCBs to allocate for the 29xx extended (128-byte) IOCB ring.

✨ SYNOPSIS ✨

uint16_t qla29xx_calc_iocbs (scsi_qla_host_t *vha , uint16_t dsds , uint8_t iocb_dsds );

🎀 ARGUMENTS 🎀

• vha — HA context. That’s the host adapter’s little home base 🫶
• dsds — number of data segment descriptors needed. The actual count you’re trying to carry 📦
• iocb_dsds — number of DSDs embedded in the first (command) IOCB. The remaining DSDs ride on Continuation Type 1 Ext IOCBs which hold NUM_CONT1_DSDS (10) each. Yes, ten per continuation, periodt 🧚

💜 DESCRIPTION 💜

Returns the total number of IOCB entries needed to carry dsds. That’s the whole vibe check: you give it the DSD situation, it tells you how many IOCB entries the ring has to hold 🔥

🌈 SEE ALSO 🌈

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

• qla24xx_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_slot(9)
• qla_req_ring_advance(9)
• qla_rsp_ring_rewind_to(9)

and that’s the whole page, bestie — mwah 💋 source/version ./drivers/scsi/qla2xxx, dated October 2026, and it’s serving qla29xx_calc_iocbs(9) energy 👑