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4097e9d250
Function tcf_action_dump() relies on tc_action->order field when starting nested nla to send action data to userspace. This approach breaks in several cases: - When multiple filters point to same shared action, tc_action->order field is overwritten each time it is attached to filter. This causes filter dump to output action with incorrect attribute for all filters that have the action in different position (different order) from the last set tc_action->order value. - When action data is displayed using tc action API (RTM_GETACTION), action order is overwritten by tca_action_gd() according to its position in resulting array of nl attributes, which will break filter dump for all filters attached to that shared action that expect it to have different order value. Don't rely on tc_action->order when dumping actions. Set nla according to action position in resulting array of actions instead. Signed-off-by: Vlad Buslov <vladbu@mellanox.com> Acked-by: Jamal Hadi Salim <jhs@mojatatu.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.
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.