ath10k/ath10k-ct: support multicast and management rate control #1644
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Drivers with software rate control can directly use the selected multicast rate for multicast/broadcast frames and the minimal basic rate for management frames. But drivers with offloaded rate control algorithms must be informed about such upper layer decisions to configure the hardware/firmware. A new BSS_CHANGED_MCAST_RATE is introduced in mac80211 to automatically inform all drivers. ath10k can detect this event and forward it via WMI to the driver. The already existing BSS_CHANGED_BASIC_RATES can be used to select the management rate. Without the WMI commands, a low rate (not necessarily one from the basic rates) is used for bcast/mcast/management frames. This means that the /etc/config/wireless settings basic_rate and mcast_rate would have no effect on the rates selected by this driver for the mentioned frames.
rotanid
added
0. type: enhancement
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Thank you. |
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@ecsv This might come late - but I've just discovered, that management rate doesn't seem to be set for at least IPQ4019. It still sends out beacons at 1Mbit/s when configuring a 6Mbit/s basic rate.
Seems like the IPQ4019 firmware is the one holding it wrong here - The 2.4GHz Netgear R7800 does honor the mgmt_rate. |
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Drivers with software rate control can directly use the selected multicast rate for multicast/broadcast frames and the minimal basic rate for management frames. But drivers with offloaded rate control algorithms must be informed about such upper layer decisions to configure the hardware/firmware.
A new BSS_CHANGED_MCAST_RATE is introduced in mac80211 to automatically inform all drivers. ath10k can detect this event and forward it via WMI to the driver. The already existing BSS_CHANGED_BASIC_RATES can be used to select the management rate.
Without the WMI commands, a low rate (not necessarily one from the basic rates) is used for bcast/mcast/management frames. This means that the /etc/config/wireless settings basic_rate and mcast_rate would have no effect on the rates selected by this driver for the mentioned frames.
The ath10k-ct and mac80211 packages in OpenWrt master already support the broadcast/multicast interface (because they are using ath10k from 4.19 as their base). The management frame changes where part of 4.20 and are not yet part of OpenWrt master. But I have forwarded backports of these changes as OpenWrt PR: