static int nvme_process_ns_desc()

in host/core.c [1352:1396]

• 43 lines of code
• 9 McCabe index (conditional complexity)

static int nvme_process_ns_desc(struct nvme_ctrl *ctrl, struct nvme_ns_ids *ids,
		struct nvme_ns_id_desc *cur, bool *csi_seen)
{
	const char *warn_str = "ctrl returned bogus length:";
	void *data = cur;

	switch (cur->nidt) {
	case NVME_NIDT_EUI64:
		if (cur->nidl != NVME_NIDT_EUI64_LEN) {
			dev_warn(ctrl->device, "%s %d for NVME_NIDT_EUI64\n",
				 warn_str, cur->nidl);
			return -1;
		}
		memcpy(ids->eui64, data + sizeof(*cur), NVME_NIDT_EUI64_LEN);
		return NVME_NIDT_EUI64_LEN;
	case NVME_NIDT_NGUID:
		if (cur->nidl != NVME_NIDT_NGUID_LEN) {
			dev_warn(ctrl->device, "%s %d for NVME_NIDT_NGUID\n",
				 warn_str, cur->nidl);
			return -1;
		}
		memcpy(ids->nguid, data + sizeof(*cur), NVME_NIDT_NGUID_LEN);
		return NVME_NIDT_NGUID_LEN;
	case NVME_NIDT_UUID:
		if (cur->nidl != NVME_NIDT_UUID_LEN) {
			dev_warn(ctrl->device, "%s %d for NVME_NIDT_UUID\n",
				 warn_str, cur->nidl);
			return -1;
		}
		uuid_copy(&ids->uuid, data + sizeof(*cur));
		return NVME_NIDT_UUID_LEN;
	case NVME_NIDT_CSI:
		if (cur->nidl != NVME_NIDT_CSI_LEN) {
			dev_warn(ctrl->device, "%s %d for NVME_NIDT_CSI\n",
				 warn_str, cur->nidl);
			return -1;
		}
		memcpy(&ids->csi, data + sizeof(*cur), NVME_NIDT_CSI_LEN);
		*csi_seen = true;
		return NVME_NIDT_CSI_LEN;
	default:
		/* Skip unknown types */
		return cur->nidl;
	}
}