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On platforms that lack a TCAM (like LS1088A), masking of flow steering keys is not supported. Until now we didn't offer flow steering capabilities at all on these platforms, since our driver implementation configured a "comprehensive" FS key (containing all supported header fields), with masks used to ignore the fields not present in the rules provided by the user. We now allow ethtool rules that share a common key (i.e. have the same header fields). The FS key is now kept in the driver private data and initialized when the first rule is added to an empty table, rather than at probe time. If a rule with a new composition key is wanted, the user must first manually delete all previous rules. When building a FS table entry to pass to firmware, we still use the old building algorithm, which assumes an all-supported-fields key, and later collapse the fields which aren't actually needed. Masked rules are not supported; if provided, the mask value will be ignored. For firmware versions older than MC10.7.0 (that only offer the legacy ABIs for configuring distribution keys) flow steering without masking support remains unavailable. Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com> 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.