Re: [PATCH v2 4/7] ibmvfc: define asynchronous sub-queue

[Tyrel Datwyler]

On 6/8/26 11:30 AM, Dave Marquardt via B4 Relay wrote:
> From: Dave Marquardt <davemarq@xxxxxxxxxxxxx>
> 
> Adds the asynchronous sub-queue structure, modifies the existing
> channel setup structure, adds the asynchronous sub-queue to the
> channels structure, and adds flags needed to tell VIOS to use the
> sub-queue.
> ---
>  drivers/scsi/ibmvscsi/ibmvfc.h | 26 +++++++++++++++++++++++++-
>  1 file changed, 25 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/scsi/ibmvscsi/ibmvfc.h b/drivers/scsi/ibmvscsi/ibmvfc.h
> index c996b36d335d..f026f30f98d3 100644
> --- a/drivers/scsi/ibmvscsi/ibmvfc.h
> +++ b/drivers/scsi/ibmvscsi/ibmvfc.h
> @@ -181,6 +181,8 @@ struct ibmvfc_npiv_login {
>  #define IBMVFC_CAN_HANDLE_FPIN		0x04
>  #define IBMVFC_CAN_USE_MAD_VERSION	0x08
>  #define IBMVFC_CAN_SEND_VF_WWPN		0x10
> +#define IBMVFC_YES_SCSI			0x40
> +#define IBMVFC_USE_ASYNC_SUBQ		0x100
>  #define IBMVFC_CAN_USE_NOOP_CMD		0x200
>  	__be64 node_name;
>  	struct srp_direct_buf async;
> @@ -229,6 +231,7 @@ struct ibmvfc_npiv_login_resp {
>  #define IBMVFC_HANDLE_VF_WWPN		0x40
>  #define IBMVFC_CAN_SUPPORT_CHANNELS	0x80
>  #define IBMVFC_SUPPORT_SCSI		0x200
> +#define IBMVFC_SUPPORT_ASYNC_SUBQ	0x800
>  #define IBMVFC_SUPPORT_NOOP_CMD		0x1000
>  	__be32 max_cmds;
>  	__be32 scsi_id_sz;
> @@ -563,7 +566,7 @@ struct ibmvfc_channel_setup_mad {
>  	struct srp_direct_buf buffer;
>  } __packed __aligned(8);
>  
> -#define IBMVFC_MAX_CHANNELS	502
> +#define IBMVFC_MAX_CHANNELS	501
>  
>  struct ibmvfc_channel_setup {
>  	__be32 flags;
> @@ -578,6 +581,7 @@ struct ibmvfc_channel_setup {
>  	struct srp_direct_buf buffer;
>  	__be64 reserved2[5];
>  	__be64 channel_handles[IBMVFC_MAX_CHANNELS];
> +	__be64 asyncSubqHandle;

No camelCase please. Kernel style prefers snake_case. Something like
async_sub_crq_handle for consistency.

-Tyrel