[PATCH 5/9] nvmet: add cns-cs-ctrl in id-ctrl for ZNS bdev

[Damien Le Moal]

On 2020/11/26 11:42, Chaitanya Kulkarni wrote:
> Update the nvmet_execute_identify() such that it can now handle
> NVME_ID_CNS_CS_CTRL when identify.cis is set to ZNS. This allows
> host to identify the support for ZNS.
> 
> Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni at wdc.com>
> ---
>  drivers/nvme/target/admin-cmd.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/nvme/target/admin-cmd.c b/drivers/nvme/target/admin-cmd.c
> index d4fc1bb1a318..e7d2b96cda6b 100644
> --- a/drivers/nvme/target/admin-cmd.c
> +++ b/drivers/nvme/target/admin-cmd.c
> @@ -650,6 +650,10 @@ static void nvmet_execute_identify(struct nvmet_req *req)
>  		return nvmet_execute_identify_ns(req);
>  	case NVME_ID_CNS_CTRL:
>  		return nvmet_execute_identify_ctrl(req);
> +	case NVME_ID_CNS_CS_CTRL:
> +		if (req->cmd->identify.csi == NVME_CSI_ZNS)
> +			return nvmet_execute_identify_cns_cs_ctrl(req);

This function is defined in zns.c, but it could be used for other NS types than
ZNS, no ?

> +		break;
>  	case NVME_ID_CNS_NS_ACTIVE_LIST:
>  		return nvmet_execute_identify_nslist(req);
>  	case NVME_ID_CNS_NS_DESC_LIST:
> 


-- 
Damien Le Moal
Western Digital Research