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Johannes Berg says: ==================== netlink: extended attribute validation This adds further netlink attribute validation: * min/max/range validation * validation through a custom function pointer This is useful to * reduce boilerplate code in command handling code, if attributes are used commonly across different commands * get more extended ACK error messages/attribute pointers * ensure attributes are valid even when ignored (though this might be a problem when converting existing code) Changes since v1: * split off validate_type from type and use that for min/max/range and function; this is better because the range is limited to the range of s16 and so things like "u16 with minimum value 1" couldn't be expressed earlier * add macros for this, e.g. NLA_POLICY_MIN(NLA_U16, 1) for the case mentioned in the previous bullet Using this pretty much in all places where applicable in nl80211 reduces the code size there by about 1.8KiB, with just a minimal code increase in lib/nlattr.o. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.