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154ee11632
Shannon Nelson says: ==================== ionic: add vlanid overflow management Add vlans to the existing rx_filter_sync mechanics currently used for managing mac filters. Older versions of our firmware had no enforced limits on the number of vlans that the driver could request, but requesting large numbers of vlans caused issues in FW memory management, so an arbitrary limit was added in the FW. The FW now returns -ENOSPC when it hits that limit, which the driver needs to handle. Unfortunately, the FW doesn't advertise the vlan id limit, as it does with mac filters, so the driver won't know the limit until it bumps into it. We'll grab the current vlan id count and use that as the limit from there on and thus prevent getting any more -ENOSPC errors. Just as is done for the mac filters, the device puts the device into promiscuous mode when -ENOSPC is seen for vlan ids, and the driver will track the vlans that aren't synced to the FW. When vlans are removed, the driver will retry the un-synced vlans. If all outstanding vlans are synced, the promiscuous mode will be disabled. The first 6 patches rework the existing filter management to make it flexible enough for additional filter types. Next we add the vlan ids into the management. The last 2 patches allow us to catch the max vlan -ENOSPC error without adding an unnecessary error message to the kernel log. ==================== 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.