netdev - [PATCH v2] Expose RDS features via sysfs.

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Message-ID: <20250611224020.318684-1-konrad.wilk@oracle.com>
Date: Wed, 11 Jun 2025 18:39:18 -0400
From: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To: allison.henderson@...cle.com, netdev@...r.kernel.org,
        linux-rdma@...r.kernel.org, rds-devel@....oracle.com, tj@...nel.org,
        andrew@...n.ch
Cc: hannes@...xchg.org, mkoutny@...e.com, cgroups@...r.kernel.org
Subject: [PATCH v2] Expose RDS features via sysfs.

Hi folks,

Changelog:
+ Since v2:
 - Changed it to use sysfs and expose a 'features' file with the data.

This patch addresses an issue where we have applications compiled against
against older (or newer) kernels. RDS does not have any ioctls to query
for what version of ABIs it has or what features it has. Hence this solution
that proposes to put this ABI information in sysfs space.

Please take a look and thank you for spending your time reading over the
patch and providing feedback on the right way forward.

Thank you!

Konrad Rzeszutek Wilk (1):
      rds: Expose feature parameters via sysfs

 net/rds/af_rds.c | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)