The PPE only provides a 14 bit hash, however many uses of the skb hash
expect the hash to use the full 32 bit range.
Use jhash to extend the hash to the full size
Signed-off-by: Felix Fietkau <nbd@nbd.name>
The code is now much cleaner and works better than the old code.
Preparation for submitting it upstream (though with a different API)
Also add back MT7621 support and fix flow table coherence issues on
MT7622
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Backport upstream changes to initialize GDM settings and reset PPE
Allow GMAC to recognize the special tag to fix PPE packet parsing
Improve GRO performance by passing PPE L4 hash as skb hash
Signed-off-by: Felix Fietkau <nbd@nbd.name>
