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David Ahern says: ==================== ipv6: Move exceptions to fib6_nh and make it optional in a fib6_info Patches 1 and 4 move pcpu and exception caches from fib6_info to fib6_nh. With respect to the current FIB entries this is only a movement from one struct to another contained within the first. Patch 2 refactors the core logic of fib6_drop_pcpu_from into a helper that is invoked per fib6_nh. Patch 3 refactors exception handling in a similar way - creating a bunch of helpers that can be invoked per fib6_nh with the goal of making patch 4 easier to review as well as creating the code needed for nexthop objects. Patch 5 makes a fib6_nh at the end of a fib6_info an array similar to IPv4 and its fib_info. For the current fib entry model, all fib6_info will have a fib6_nh allocated for it. Patch 6 refactors ip6_route_del moving the code for deleting an exception entry into a new function. Patch 7 adds tests for redirect route exceptions. The new test was written against 5.1 (before any of the nexthop refactoring). It and the pmtu.sh selftest exercise the exception code paths - from creating exceptions to cleaning them up on device delete. All tests pass without any rcu locking or memleak warnings. ==================== 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.
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.