zfcp_scsi_adapter_register(9)

🎀 zfcp_scsi_adapter_register(9) — Kernel API Manual, bestie edition 🎀

Okay so we are in the Kernel API Manual, and this page is literally zfcp_scsi_adapter_register(9). It’s giving “set up the SCSI and FC host situation with the SCSI midlayer” energy, and I’m obsessed. 💅

✨ NAME ✨

zfcp_scsi_adapter_register — allocate and register SCSI and FC host with SCSI midlayer. Slay.

🛠 SYNOPSIS 🛠

int zfcp_scsi_adapter_register (struct zfcp_adapter *adapter );

🫶 ARGUMENTS 🫶

• adapter — the zfcp adapter to register with the SCSI midlayer. That’s the whole assignment, fr fr. 💖

💖 DESCRIPTION 💖

So what this does: it allocates the SCSI host object for the given adapter, sets basic properties (such as the transport template, QDIO limits, ...), and registers it with the midlayer. Iconic behavior. ✨

During registration with the midlayer, the corresponding FC host object for the referenced transport class is also implicitely allocated. 👑

Upon success, adapter->scsi_host is set, and upon failure it remains NULL. If adapter->scsi_host is already set, nothing is done. No extra drama, no extra work. 💅

🔥 RETURN 🔥

• 0 — allocation and registration was successful. Periodt. 💖
• -EEXIST — the SCSI and FC host did already exist, nothing was done, nothing was changed. No notes. 💅
• -EIO — allocation or registration failed. Sad but informative. 😭

🌈 SEE ALSO 🌈

• Kernel file ./drivers/s390/scsi/zfcp_scsi.c
• zfcp_scsi_task_mgmt_function(9)
• zfcp_scsi_sysfs_host_reset(9)
• zfcp_scsi_adapter_unregister(9)
• zfcp_scsi_terminate_rport_io(9)
• zfcp_scsi_set_prot(9)
• zfcp_scsi_dif_sense_error(9)

That’s the whole page, bestie. This one comes from ./drivers/s390/scsi, dated October 2026, and it’s the zfcp_scsi_adapter_register(9) page — mwah 💋✨