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VI clients

Example

  1. vow_config=0x40190 means 4 VI nodes with 400 descriptors each. This translates to 4 VI quality nodes which can support up to 200 ms of buffering per node/stream.
  2. vow_config=0x800c8 means 8 VI nodes with 200 descriptors each. This translates to 8 VI quality nodes which can support up to 100 ms of buffering per node/stream
  3. vow_config=0x5012C means 5 VI nodes with 300 descriptors each. This translates to 5 VI quality nodes which can support up to 150 ms of buffering per node/stream.

NOTE:

  • Due to memory constraints current release can reserve only 1600 descriptors for VI nodes. This means it can support up to 8 VI nodes with 200 descriptors per each VI link. Configuring higher numbers will result in failure to load umac module.
  • Due to memory constraints, enabling VoW configuration automatically limits the maximum VAP or client supported on AP. With VoW enabled, AP can support minimum of 8 stations and 8 VAPs.

Aggregate sizing scaling

Settings

cfg80211tool athN <AC> <RTS(1|0)> <scaling_factor> <BW>

RTS and BW will be ignored and it should be set to zero. AC – can be one of the following. 0 – BE 1 – BK 2 – VI 3 – VO Scaling_factor - Value ranging from 0 to 3. 0 means scaling is disabled. Setting it to higher may have an adverse effect.

Example

1. cfg80211tool athN acparams 0 0 2 0
a. Burst disabled - sets max aggregate size duration as 1ms for BE in presence of VI
b. Burst Enabled – 1ms burst opportunity for BE traffic.
2. cfg80211tool athN acparams 1 0 2 0
a. Burst Disabled - set max aggregate size duration as 1ms for BK in presence of VI.
b. Burst Enabled - 1ms burst opportunity for BK traffic.
3. cfg80211tool athN acparams 2 0 1 0
a. Burst Disabled -Set max aggregate size duration as 2ms for VI.
b. Burst Enabled – 2ms burst opportunity for VI traffic.

NOTE: This is a per phy/device setting. Due to historical reason, it is using vap (ath0|1…) instead of phy (wifi0|1…) interface. Hence, this needs to be applied once for a vap belonging to a phy.