Re: [PATCH v3 rdma-next 4/5] RDMA/NLDEV: helper functions to add provider attributes

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On Fri, Mar 30, 2018 at 11:03:42AM -0700, Steve Wise wrote:
> These help rdma providers to fill out the provider entries.
> 
> Signed-off-by: Steve Wise <swise@xxxxxxxxxxxxxxxxxxxxx>
>  drivers/infiniband/core/nldev.c | 67 +++++++++++++++++++++++++++++++++++++++++
>  include/rdma/restrack.h         | 13 ++++++++
>  2 files changed, 80 insertions(+)
> 
> diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c
> index 0610313..a11fd16 100644
> +++ b/drivers/infiniband/core/nldev.c
> @@ -128,6 +128,73 @@ static int provider_fill_port_info(struct sk_buff *msg,
>  		device->res.fill_port_info(msg, device, port) : 0;
>  }
>  
> +static int put_provider_name_print_type(struct sk_buff *msg, const char *name,
> +					enum rdma_nldev_print_type print_type)
> +{
> +	if (nla_put_string(msg, RDMA_NLDEV_ATTR_PROVIDER_STRING, name))
> +		return -EMSGSIZE;
> +	if (print_type != RDMA_NLDEV_PRINT_TYPE_UNSPEC &&
> +	    nla_put_u8(msg, RDMA_NLDEV_ATTR_PROVIDER_PRINT_TYPE, print_type))
> +		return -EMSGSIZE;
> +
> +	return 0;
> +}
> +
> +static int _rdma_nl_put_provider_u32(struct sk_buff *msg, const char *name,
> +				     enum rdma_nldev_print_type print_type,
> +				     u32 value)
> +{
> +	if (put_provider_name_print_type(msg, name, print_type))
> +		return -EMSGSIZE;
> +	if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PROVIDER_U32, value))
> +		return -EMSGSIZE;
> +
> +	return 0;
> +}
> +
> +static int _rdma_nl_put_provider_u64(struct sk_buff *msg, const char *name,
> +				     enum rdma_nldev_print_type print_type,
> +				     u64 value)
> +{
> +	if (put_provider_name_print_type(msg, name, print_type))
> +		return -EMSGSIZE;
> +	if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_PROVIDER_U64, value,
> +			      RDMA_NLDEV_ATTR_PAD))
> +		return -EMSGSIZE;
> +
> +	return 0;
> +}
> +
> +int rdma_nl_put_provider_u32(struct sk_buff *msg, const char *name, u32 value)
> +{
> +	return _rdma_nl_put_provider_u32(msg, name,
> +					 RDMA_NLDEV_PRINT_TYPE_UNSPEC, value);
> +}
> +EXPORT_SYMBOL(rdma_nl_put_provider_u32);

I wonder if this should be EXPORT_SYMBOL_GPL ?

Jason
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