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

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Basic Code Flow for 802.11 connection in Linux

Mode: Station
Security: None

Steps of connection completion:

Probe Request (Active Scanning) / (Passive Scanning)
Probe Response / Beacon (Scan Results)
Authentication Request
Authentication Response
Association Request
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

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

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