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| -rw-r--r-- | Documentation/networking/mac80211-auth-assoc-deauth.txt | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/Documentation/networking/mac80211-auth-assoc-deauth.txt b/Documentation/networking/mac80211-auth-assoc-deauth.txt new file mode 100644 index 000000000000..721773d2b9d2 --- /dev/null +++ b/Documentation/networking/mac80211-auth-assoc-deauth.txt @@ -0,0 +1,99 @@ +# +# This outlines the Linux authentication/association and +# deauthentication/disassociation flows. +# +# This can be converted into a diagram using the service +# at http://www.websequencediagrams.com/ +# + +participant userspace +participant mac80211 +participant driver + +alt authentication needed (not FT) +userspace->mac80211: authenticate + +alt authenticated/authenticating already +mac80211->driver: sta_state(AP, not-exist) +mac80211->driver: bss_info_changed(clear BSSID) +else associated +note over mac80211,driver +like deauth/disassoc, without sending the +BA session stop & deauth/disassoc frames +end note +end + +mac80211->driver: config(channel, non-HT) +mac80211->driver: bss_info_changed(set BSSID, basic rate bitmap) +mac80211->driver: sta_state(AP, exists) + +alt no probe request data known +mac80211->driver: TX directed probe request +driver->mac80211: RX probe response +end + +mac80211->driver: TX auth frame +driver->mac80211: RX auth frame + +alt WEP shared key auth +mac80211->driver: TX auth frame +driver->mac80211: RX auth frame +end + +mac80211->driver: sta_state(AP, authenticated) +mac80211->userspace: RX auth frame + +end + +userspace->mac80211: associate +alt authenticated or associated +note over mac80211,driver: cleanup like for authenticate +end + +alt not previously authenticated (FT) +mac80211->driver: config(channel, non-HT) +mac80211->driver: bss_info_changed(set BSSID, basic rate bitmap) +mac80211->driver: sta_state(AP, exists) +mac80211->driver: sta_state(AP, authenticated) +end +mac80211->driver: TX assoc +driver->mac80211: RX assoc response +note over mac80211: init rate control +mac80211->driver: sta_state(AP, associated) + +alt not using WPA +mac80211->driver: sta_state(AP, authorized) +end + +mac80211->driver: set up QoS parameters + +alt is HT channel +mac80211->driver: config(channel, HT params) +end + +mac80211->driver: bss_info_changed(QoS, HT, associated with AID) +mac80211->userspace: associated + +note left of userspace: associated now + +alt using WPA +note over userspace +do 4-way-handshake +(data frames) +end note +userspace->mac80211: authorized +mac80211->driver: sta_state(AP, authorized) +end + +userspace->mac80211: deauthenticate/disassociate +mac80211->driver: stop BA sessions +mac80211->driver: TX deauth/disassoc +mac80211->driver: flush frames +mac80211->driver: sta_state(AP,associated) +mac80211->driver: sta_state(AP,authenticated) +mac80211->driver: sta_state(AP,exist) +mac80211->driver: sta_state(AP,not-exist) +mac80211->driver: turn off powersave +mac80211->driver: bss_info_changed(clear BSSID, not associated, no QoS, ...) +mac80211->driver: config(non-HT channel type) +mac80211->userspace: disconnected |