iucv_register(9)

✨ NAME ✨

iucv_register — registers a driver with IUCV. This is the iucv_register(9) page from the Kernel API Manual, and yes bestie, we're getting your driver hooked up to IUCV. 💖

🌸 SYNOPSIS 🌸

int iucv_register (struct iucv_handler *handler , int smp );

🎀 ARGUMENTS 🎀

• handler — the address of the iucv handler structure. Like, where your handler lives, hand it over. 🫶
• smp — != 0 indicates that the handler can deal with out of order messages. No cap, that's literally what it means. 💅

💖 RETURN 💖

• 0 on success — periodt. ✨
• -ENOMEM if the memory allocation for the pathid table failed. 😭
• -EIO if IUCV_DECLARE_BUFFER failed on all cpus. 💀

🦋 SEE ALSO 🦋

Kernel file ./net/iucv/iucv.c and the whole friend group: __iucv_call_b2f0(9), iucv_allow_cpu(9), iucv_block_cpu(9), iucv_declare_cpu(9), iucv_retrieve_cpu(9), iucv_sever_pathid(9), __iucv_cleanup_queue(9), iucv_cleanup_queue(9), iucv_unregister(9), iucv_path_accept(9), iucv_path_connect(9), iucv_path_quiesce(9), iucv_path_resume(9), iucv_path_sever(9), iucv_message_purge(9), iucv_message_receive_iprmdata(9), __iucv_message_receive(9), iucv_message_receive(9), iucv_message_reject(9), iucv_message_reply(9), __iucv_message_send(9), iucv_message_send(9), iucv_message_send2way(9), iucv_path_pending(9), iucv_path_complete(9), iucv_path_severed(9), iucv_path_quiesced(9), iucv_path_resumed(9), iucv_message_complete(9), iucv_message_pending(9), iucv_init(9), iucv_exit(9).

Okay so this whole page is from ./net/iucv, dated October 2026 — mwah 💋, go be the main character of kernel networking. 💜