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Get the exact count of L3L4 filters when the L3L4FNUM field of HW_FEATURE1 register is >= 8. If L3L4FNUM < 8, then the number of L3L4 filters supported by XGMAC is equal to L3L4FNUM. From L3L4FNUM >= 8 the number of L3L4 filters goes on like 8, 16, 32, ... Current maximum of L3L4FNUM = 10. Also, fix the XGMAC_IDDR bitmask of L3L4_ADDR_CTRL register. IDDR field starts from the 8th bit of the L3L4_ADDR_CTRL register. IDDR[3:0] indicates the type of L3L4 filter register while IDDR[8:4] indicates the filter number (0 to 31). So overall 9 bits are used for IDDR (i.e. L3L4_ADDR_CTRL[16:8]) to address the registers of all the filters. Currently, XGMAC_IDDR is GENMASK(15,8), causing issues accessing L3L4 filters above 15 for those XGMACs configured with more than 16 L3L4 filters. Signed-off-by: Rohan G Thomas <rohan.g.thomas@intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.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.