netdev - [RFC PATCH net-next 0/3] netlink: formatted extacks

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Message-ID: <cover.1665147129.git.ecree.xilinx@gmail.com>
Date:   Fri, 7 Oct 2022 14:25:11 +0100
From:   <ecree@...inx.com>
To:     <netdev@...r.kernel.org>, <linux-net-drivers@....com>
CC:     <davem@...emloft.net>, <kuba@...nel.org>, <pabeni@...hat.com>,
        <edumazet@...gle.com>, <habetsm.xilinx@...il.com>,
        <johannes@...solutions.net>, <marcelo.leitner@...il.com>,
        Edward Cree <ecree.xilinx@...il.com>
Subject: [RFC PATCH net-next 0/3] netlink: formatted extacks

From: Edward Cree <ecree.xilinx@...il.com>

Currently, netlink extacks can only carry fixed string messages, which
 is limiting when reporting failures in complex systems.  This series
 adds the ability to return printf-formatted messages, and uses it in
 the sfc driver's TC offload code.
Formatted extack messages are limited in length to a fixed buffer size,
 currently 80 characters.
There is no change to the netlink uAPI; only internal kernel changes
 are needed.

Edward Cree (3):
  netlink: add support for formatted extack messages
  sfc: use formatted extacks instead of efx_tc_err()
  sfc: remove 'log-tc-errors' ethtool private flag

 drivers/net/ethernet/sfc/ef100_ethtool.c  |  2 -
 drivers/net/ethernet/sfc/ethtool_common.c | 37 ------------------
 drivers/net/ethernet/sfc/ethtool_common.h |  2 -
 drivers/net/ethernet/sfc/mae.c            |  5 +--
 drivers/net/ethernet/sfc/net_driver.h     |  2 -
 drivers/net/ethernet/sfc/tc.c             | 47 ++++++++++-------------
 drivers/net/ethernet/sfc/tc.h             | 18 ---------
 include/linux/netlink.h                   | 21 +++++++++-
 8 files changed, 42 insertions(+), 92 deletions(-)