netdev - Re: [PATCH RFC v1] rds: Expose feature parameters via sysfs and ELF note

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Message-ID: <20250612091705.GU10669@unreal>
Date: Thu, 12 Jun 2025 12:17:05 +0300
From: Leon Romanovsky <leon@...nel.org>
To: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Cc: allison.henderson@...cle.com, netdev@...r.kernel.org,
	linux-rdma@...r.kernel.org, rds-devel@....oracle.com
Subject: Re: [PATCH RFC v1] rds: Expose feature parameters via sysfs and ELF
 note

On Tue, Jun 10, 2025 at 12:27:25PM -0400, Konrad Rzeszutek Wilk wrote:
> We would like to have a programatic way for applications
> to query which of the features defined in include/uapi/linux/rds.h
> are actually implemented by the kernel.

If you are interested in programmatic way, the IOCTL/netlink/syscall/...
are the right approach for it and not sysfs files.

Why don't you follow standard way of doing it by creating new query IOCTL
command? Which will return declared feature bitmask, which application can
parse and understand?

Thanks