Re: [PATCH RFC net-next v1 5/5] net: devmem: Implement TX path

[David Ahern]

On 12/20/24 5:42 PM, Mina Almasry wrote:
> diff --git a/include/uapi/linux/uio.h b/include/uapi/linux/uio.h
> index 649739e0c404..41490cde95ad 100644
> --- a/include/uapi/linux/uio.h
> +++ b/include/uapi/linux/uio.h
> @@ -38,6 +38,11 @@ struct dmabuf_token {
>  	__u32 token_count;
>  };
>  
> +struct dmabuf_tx_cmsg {
> +	__u32 dmabuf_id;

I believe you need to make sure the u64 is properly aligned:

	__u32 unused;  // and verify it is set to 0

> +	__u64 dmabuf_offset;
> +};
> +
>  /*
>   *	UIO_MAXIOV shall be at least 16 1003.1g (5.4.1.1)
>   */