qeth_irq(9)

💖 NAME 💖

okay so bestie, welcome to qeth_irq(9) from the Kernel API Manual — this is literally the qeth interrupt handler. qeth_irq — qeth interrupt handler. iconic, no cap. 💅

✨ SYNOPSIS ✨

void qeth_irq (struct ccw_device *cdev , unsigned long intparm , struct
       irb *irb );

🎀 ARGUMENTS 🎀

• cdev — ccw device. that's the device, bestie.
• intparm — expect pointer to iob. yes, that's the assignment fr fr.
• irb — Interruption Response Block. the name is giving very important paperwork. 🎀

🦋 DESCRIPTION 🦋

okay so in the good path: the corresponding qeth channel is locked with the last used iob as active_cmd. periodt. but also — and this is important — this function is also called for error interrupts. so she's not just here for the cute path. 😭

The caller ensures that:

• Interrupts are disabled
• ccw device lock is held

that's the whole vibe check, bestie — no skipping it. 🫶

🌈 SEE ALSO 🌈

• Kernel file: ./drivers/s390/net/qeth_core_main.c
• qeth_send_control_data(9)
• qeth_prep_flush_pack_buffer(9)
• qeth_get_elements_for_frags(9)
• qeth_count_elements(9)
• qeth_add_hw_header(9)
• qeth_fill_buffer(9)
• qeth_vm_request_mac(9)
• qeth_enable_hw_features(9)

go read these, iykyk. 📚✨

mwah 💋 — source/version: ./drivers/s390/net, date: October 2026, manual: qeth_irq(9). bye bestie, slay your interrupts. 🫶