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d4ead6b34b
Similar to IPv4, add fib metrics to the fib struct, which at the moment
is rt6_info. Will be moved to fib6_info in a later patch. Copy metrics
into dst by reference using refcount.
To make the transition:
- add dst_metrics to rt6_info. Default to dst_default_metrics if no
metrics are passed during route add. No need for a separate pmtu
entry; it can reference the MTU slot in fib6_metrics
- ip6_convert_metrics allocates memory in the FIB entry and uses
ip_metrics_convert to copy from netlink attribute to metrics entry
- the convert metrics call is done in ip6_route_info_create simplifying
the route add path
+ fib6_commit_metrics and fib6_copy_metrics and the temporary
mx6_config are no longer needed
- add fib6_metric_set helper to change the value of a metric in the
fib entry since dst_metric_set can no longer be used
- cow_metrics for IPv6 can drop to dst_cow_metrics_generic
- rt6_dst_from_metrics_check is no longer needed
- rt6_fill_node needs the FIB entry and dst as separate arguments to
keep compatibility with existing output. Current dst address is
renamed to dest.
(to be consistent with IPv4 rt6_fill_node really should be split
into 2 functions similar to fib_dump_info and rt_fill_info)
- rt6_fill_node no longer needs the temporary metrics variable
Signed-off-by: David Ahern <dsahern@gmail.com>
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.
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.