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net: stmmac: Fallback to VLAN Perfect filtering if HASH is not available

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If VLAN Hash Filtering is not available we can fallback to perfect
filtering instead. Let's implement this in XGMAC and GMAC cores and let
the user use this filter.

VLAN VID=0 always passes filter so we check if more than 2 VLANs are
created and return proper error code if so because perfect filtering
only supports 1 VID at a time.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jose Abreu 2019-10-06 13:17:12 +02:00 • committed by David S. Miller
commit c7ab0b8088
4 changed files with 40 additions and 9 deletions
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