Messages in this thread | | | Date | Tue, 19 Dec 2023 16:15:01 +0100 | From | Daniel Wagner <> | Subject | Re: [PATCH v3 01/16] nvmet: report ioccsz and iorcsz for disc ctrl |
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On Tue, Dec 19, 2023 at 08:24:58AM +0100, Hannes Reinecke wrote: > > + * Disable in-capsule data for Metadata capable controllers. > > + */ > > + cmd_capsule_size = sizeof(struct nvme_command); > > + if (!ctrl->pi_support) > > + cmd_capsule_size += req->port->inline_data_size; > > + id->ioccsz = cpu_to_le32(cmd_capsule_size / 16); > > Why the division by 16?
The unit size is 16 bytes:
I/O Queue Command Capsule Supported Size (IOCCSZ): This field defines the maximum I/O command capsule size in 16 byte units.
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