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77dfc2bc0b
ieee80211_get_keyid() will return false value if IV has been stripped, such as return 0 for IP/ARP frames due to LLC header, and return -EINVAL for disassociation frames due to its length... etc. Don't try to access it if it's not present. Signed-off-by: Xing Song <xing.song@mediatek.com> Link: https://lore.kernel.org/r/20211101024657.143026-1-xing.song@mediatek.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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.