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762e7e174d
Broadcom switches locally terminate link local traffic and do not forward it, so we should not mark it as offloaded. In some situations we still want/need to flood this traffic, e.g. if STP is disabled, or it is explicitly enabled via the group_fwd_mask. But if the skb is marked as offloaded, the kernel will assume this was already done in hardware, and the packets never reach other bridge ports. So ensure that link local traffic is never marked as offloaded, so that the kernel can forward/flood these packets in software if needed. Since the local termination in not configurable, check the destination MAC, and never mark packets as offloaded if it is a link local ether address. While modern switches set the tag reason code to BRCM_EG_RC_PROT_TERM for trapped link local traffic, they also set it for link local traffic that is flooded (01:80:c2:00:00:10 to 01:80:c2:00:00:2f), so we cannot use it and need to look at the destination address for them as well. Fixes: |
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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 reStructuredText 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.