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commitdcdf4ce0ffupstream. In the switchdev mode, when running "cat /sys/class/net/NIC/statistics/tx_packets", the ppcnt register is accessed to get the latest values. But currently this command can not get the correct values from ppcnt. From firmware manual, before getting the 802_3 counters, the 802_3 data layout should be set to the ppcnt register. When the command "cat /sys/class/net/NIC/statistics/tx_packets" is run, before updating 802_3 data layout with ppcnt register, the monitor counters are tested. The test result will decide the 802_3 data layout is updated or not. Actually the monitor counters do not support to monitor rx/tx stats of 802_3 in switchdev mode. So the rx/tx counters change will not trigger monitor counters. So the 802_3 data layout will not be updated in ppcnt register. Finally this command can not get the latest values from ppcnt register with 802_3 data layout. Fixes:5c7e8bbb02("net/mlx5e: Use monitor counters for update stats") Signed-off-by: Zhu Yanjun <yanjunz@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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.