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With struct flow_dissector_key_mpls now recording the first FLOW_DIS_MPLS_MAX labels, we can extend Flower to filter on any of these LSEs independently. In order to avoid creating new netlink attributes for every possible depth, let's define a new TCA_FLOWER_KEY_MPLS_OPTS nested attribute that contains the list of LSEs to match. Each LSE is represented by another attribute, TCA_FLOWER_KEY_MPLS_OPTS_LSE, which then contains the attributes representing the depth and the MPLS fields to match at this depth (label, TTL, etc.). For each MPLS field, the mask is always set to all-ones, as this is what the original API did. We could allow user configurable masks in the future if there is demand for more flexibility. The new API also allows to only specify an LSE depth. In that case, Flower only verifies that the MPLS label stack depth is greater or equal to the provided depth (that is, an LSE exists at this depth). Filters that only match on one (or more) fields of the first LSE are dumped using the old netlink attributes, to avoid confusing user space programs that don't understand the new API. Signed-off-by: Guillaume Nault <gnault@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
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.