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Wei Fang af9cfcbc28 net: enetc: fix the output issue of 'ethtool --show-ring' 
[ Upstream commit 70b439bf06 ]

Currently, enetc_get_ringparam() only provides rx_pending and tx_pending,
but 'ethtool --show-ring' no longer displays these fields. Because the
ringparam retrieval path has moved to the new netlink interface, where
rings_fill_reply() emits the *x_pending only if the *x_max_pending values
are non-zero. So rx_max_pending and tx_max_pending to are added to
enetc_get_ringparam() to fix the issue.

Note that the maximum tx/rx ring size of hardware is 64K, but we haven't
added set_ringparam() to make the ring size configurable. To avoid users
mistakenly believing that the ring size can be increased, so set
the *x_max_pending to priv->*x_bd_count.

Fixes: e4a1717b67 ("ethtool: provide ring sizes with RINGS_GET request")
Signed-off-by: Wei Fang <wei.fang@nxp.com>
Link: https://patch.msgid.link/20260320094222.706339-1-wei.fang@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2026-04-18 10:33:25 +02:00
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README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.