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Vladimir Oltean 43ce887c50 net: dsa: sja1105: fix tc-gate schedule with single element
The sja1105_gating_cfg_time_to_interval function does this, as per the
comments:

/* The gate entries contain absolute times in their e->interval field. Convert
 * that to proper intervals (i.e. "0, 5, 10, 15" to "5, 5, 5, 5").
 */

To perform that task, it iterates over gating_cfg->entries, at each step
updating the interval of the _previous_ entry. So one interval remains
to be updated at the end of the loop: the last one (since it isn't
"prev" for anyone else).

But there was an erroneous check, that the last element's interval
should not be updated if it's also the only element. I'm not quite sure
why that check was there, but it's clearly incorrect, as a tc-gate
schedule with a single element would get an e->interval of zero,
regardless of the duration requested by the user. The switch wouldn't
even consider this configuration as valid: it will just drop all traffic
that matches the rule.

Fixes: 834f8933d5 ("net: dsa: sja1105: implement tc-gate using time-triggered virtual links")
Reported-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-25 16:06:56 -07:00
arch flexible-array member conversion patches for 5.8-rc2 2020-06-16 17:23:57 -07:00
block block: Replace zero-length array with flexible-array 2020-06-15 23:08:32 -05:00
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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.