![Vladimir Oltean](/assets/img/avatar_default.png)
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
28 lines
1.1 KiB
Plaintext
28 lines
1.1 KiB
Plaintext
best_effort_vlan_filtering
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[DEVICE, DRIVER-SPECIFIC]
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Allow plain ETH_P_8021Q headers to be used as DSA tags.
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Benefits:
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- Can terminate untagged traffic over switch net
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devices even when enslaved to a bridge with
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vlan_filtering=1.
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- Can terminate VLAN-tagged traffic over switch net
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devices even when enslaved to a bridge with
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vlan_filtering=1, with some constraints (no more than
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7 non-pvid VLANs per user port).
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- Can do QoS based on VLAN PCP and VLAN membership
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admission control for autonomously forwarded frames
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(regardless of whether they can be terminated on the
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CPU or not).
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Drawbacks:
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- User cannot use VLANs in range 1024-3071. If the
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switch receives frames with such VIDs, it will
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misinterpret them as DSA tags.
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- Switch uses Shared VLAN Learning (FDB lookup uses
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only DMAC as key).
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- When VLANs span cross-chip topologies, the total
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number of permitted VLANs may be less than 7 per
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port, due to a maximum number of 32 VLAN retagging
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rules per switch.
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Configuration mode: runtime
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Type: bool.
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