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On this switch, the frame length enforcements are performed by the ingress policers. There are 2 types of those: regular L2 (also called best-effort) and Virtual Link policers (an ARINC664/AFDX concept for defining L2 streams with certain QoS abilities). To avoid future confusion, I prefer to call the reset reason "Best-effort policers", even though the VL policers are not yet supported. We also need to change the setup of the initial static config, such that DSA calls to .change_mtu (which are expensive) become no-ops and don't reset the switch 5 times. A driver-level decision is to unconditionally allow single VLAN-tagged traffic on all ports. The CPU port must accept an additional VLAN header for the DSA tag, which is again a driver-level decision. The policers actually count bytes not only from the SDU, but also from the Ethernet header and FCS, so those need to be accounted for as well. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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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.