aka-mj/80211_code_flow_linux

Basic flow of code (function calls) for 802.11 station in linux from userspace to driver.

Basic Code Flow for 802.11 connection in Linux

• Mode: Station
• Security: None

Steps of connection completion:

1. Probe Request (Active Scanning) / (Passive Scanning)
2. Probe Response / Beacon (Scan Results)
3. Authentication Request
4. Authentication Response
5. Association Request
6. Association Response

Layers:

• wpa_supplicant
• cfg80211 - /net/wireless
• mac80211 - /net/mac80211
• driver - /drivers/net/wireless/ath/ath9k

Source Code Used (Version Details)

• Linux Version: 5.4.31
• wpa_supplicant: 2.10