Archive for April, 2022

RT2870/RT3070 ath9k_htc and maximum number of STAs

April 3rd, 2022 No comments

For many years I have been using RT2870/RT3070 USB WiFi dongles and I was happy with them. They have great Linux support thanks to the ath9k_htc driver.

But as number of IoT devices increased, one day one of them couldn’t connect and hostapd was reporting errors like these:

Could not set STA to kernel driver
nl80211: NL80211_CMD_SET_STATION result: -105 (No buffer space available)
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