Florian Fainelli 5d80bcbb63
net: dsa: bcm_sf2: Make UDF slices more configurable ...
In preparation for introducing IPv6 rules support, make the
cfp_udf_layout more flexible and match more accurately how the HW is
designed: we have 3 + 1 slices per protocol, but we may not be using all
of them and we are relative to a particular base offset (slice A for
IPv4 for instance). Also populate the slice number that should be used
(slice 1 for IPv4) based on the lookup function.
Finally, we introduce two helper functions: udf_upper_bits() and
udf_lower_bits() to help setting the UDF_n_* valid bits based on the
number of UDFs valid within a slice. Update the IPv4 rule setting to
make use of it to be more robust wrt. change in number of User Defined
Fields being programmed.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com >
Signed-off-by: David S. Miller <davem@davemloft.net >
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