Re: [PATCH for-next 2/2] RDMA/efa: Expose 64-bit send WR ID support to userspace

[Gal Pressman <gal.pressman@linux.dev>]

On 21/07/2026 10:00, Yonatan Nachum wrote:
> Currently EFA WRs support 16-bit request ID, this requires EFA to manage
> a translation table to translate the IB WR ID from 64-bits to 16-bits
> and translating it back on CQ completion.
> Expose a new device capability to handle 64-bit request ID for SQ WRs
> allowing userspace to directly post the 64-bit ID to the device.
> 
> Reviewed-by: Michael Margolin <mrgolin@amazon.com>
> Reviewed-by: Tom Sela <tomsela@amazon.com>
> Signed-off-by: Yonatan Nachum <ynachum@amazon.com>
> ---
>  drivers/infiniband/hw/efa/efa_verbs.c | 3 +++
>  include/uapi/rdma/efa-abi.h           | 1 +
>  2 files changed, 4 insertions(+)
> 
> diff --git a/drivers/infiniband/hw/efa/efa_verbs.c b/drivers/infiniband/hw/efa/efa_verbs.c
> index 001bd8cb4f66..85e32a7c76c3 100644
> --- a/drivers/infiniband/hw/efa/efa_verbs.c
> +++ b/drivers/infiniband/hw/efa/efa_verbs.c
> @@ -264,6 +264,9 @@ int efa_query_device(struct ib_device *ibdev,
>  		if (EFA_DEV_CAP(dev, UNSOLICITED_WRITE_RECV))
>  			resp.device_caps |= EFA_QUERY_DEVICE_CAPS_UNSOLICITED_WRITE_RECV;
>  
> +		if (EFA_DEV_CAP(dev, SQ_64_BIT_REQ_ID))
> +			resp.device_caps |= EFA_QUERY_DEVICE_CAPS_SQ_64_BIT_REQ_ID;
> +
>  		if (dev->neqs)
>  			resp.device_caps |= EFA_QUERY_DEVICE_CAPS_CQ_NOTIFICATIONS;
>  
> diff --git a/include/uapi/rdma/efa-abi.h b/include/uapi/rdma/efa-abi.h
> index fc4b2eb903c9..1e371bfef6d8 100644
> --- a/include/uapi/rdma/efa-abi.h
> +++ b/include/uapi/rdma/efa-abi.h
> @@ -135,6 +135,7 @@ enum {
>  	EFA_QUERY_DEVICE_CAPS_RDMA_WRITE = 1 << 5,
>  	EFA_QUERY_DEVICE_CAPS_UNSOLICITED_WRITE_RECV = 1 << 6,
>  	EFA_QUERY_DEVICE_CAPS_CQ_WITH_EXT_MEM = 1 << 7,
> +	EFA_QUERY_DEVICE_CAPS_SQ_64_BIT_REQ_ID = 1 << 9,
What happened to 8?