Case Study: Mobile Phones Running HarmonyOS Do Not Roam Because Huawei's Proprietary 802.11r Is Disabled

Symptom

A mobile phone does not roam after being upgraded from Android to HarmonyOS.

Relevant Alarms and Logs

None

Cause Analysis

The Huawei proprietary 802.11r function is disabled.

Procedure

1. Enable the STA to access the network in local key authentication mode and check the roaming attempt process of the STA using the station-trace function.

   [AC-diagnose] station-trace sta-mac sta-mac
   <7>Jun 29 2021 18:22:45.650.4 yyyy-yyyy-yyyy WSRV/7/BTRACE:(BTRACE)(WLAN_AP)(x-x-x):WUAMK_5GPreferAuthProc[5447]:
   Auth Request,  RadioId[1], VapId[17].
   <7>Jun 29 2021 18:22:45.650.5 yyyy-yyyy-yyyy WSRV/7/BTRACE:(BTRACE)(WLAN_AP)(x-x-x):WUAMK_5GPreferAuthProc[5483]: VAP[17] is not in 5G prefer and no same ssid vap.
   <7>Jun 29 2021 18:22:45.650.6 yyyy-yyyy-yyyy WSRV/7/BTRACE:(BTRACE)(WLAN_AP)(x-x-x):WUAMK_11RAuthReqCallChainHandle[617]: 11R Auth Req Enter:
   radio id    :1
   wifi id     :1
   packet type :0
   dst bssid   :9c71-3a2b-7731
   authmodeset:0x40
   uniciperset:0x8
   mulciperset:0x8
   keymgmtset :0x2
   <7>Jun 29 2021 18:22:45.670.1 yyyy-yyyy-yyyy WSRV/7/BTRACE:(BTRACE)(WLAN_AP)(x-x-x):11R Auth Req:
   ApId   : 0
   RadioId: 1
   VapId  : 17
   PktType: 0
   Dst bssid :x-x-x
   authmodeset:0x40
   uniciperset:0x8
   mulciperset:0x8
   keymgmtset :0x2
   <7>Jun 29 2021 18:22:45.670.2 yyyy-yyyy-yyyy WSRV/7/BTRACE:(BTRACE)(WLAN_AP)(x-x-x):[WPA] Auth request check
   <7>Jun 29 2021 18:22:45.670.3 yyyy-yyyy-yyyy WSRV/7/BTRACE:(BTRACE)(WLAN_AP)(x-x-x):Add 11R sta
   Ap Id      = 0,
   Radio Id   = 1,
   Vap Id     = 17
   <7>Jun 29 2021 18:22:45.670.4 yyyy-yyyy-yyyy WSRV/7/BTRACE:(BTRACE)(WLAN_AP)(x-x-x):WUAMK_11RSendAuthRspProc[717]: Auth Rsp:
   radio id    :1
   wifi id     :1
   packet type :0
   result      :0
   Dst Bssid   :0000-0000-0000
   <7>Jun 29 2021 18:22:45.970.1 yyyy-yyyy-yyyy WSRV/7/BTRACE:(BTRACE)(WLAN_AP)(x-x-x):WUAMK_AssocreqCtrlCallChainHandle[320]: Enter:
   RadioId(1)
   VapId(17)
   packetType(32)
   Rssi(43)
   <7>Jun 29 2021 18:22:45.970.2 yyyy-yyyy-yyyy WSRV/7/BTRACE:(BTRACE)(WLAN_AP)(x-x-x):WUAMK_AssocreqCallChainHandle[987]: Enter:
   radio id    :1
   wlan id     :1
   packet type :reassociation req
   result      :Successful (0)
   reason      :0x0
   sta ability :66
   SFN roam    :0
   SNR         :43
   <7>Jun 29 2021 18:22:45.970.3 yyyy-yyyy-yyyy WSRV/7/BTRACE:(BTRACE)(WLAN_AP)(x-x-x):Association request new proc:
   Ap id      :0
   Radio id   :1
   Wifi Id    :1
   Assoc type :reassociaton
   SFN roam   :0
   11R assoc  :1
   11R First  :0
   11R Mode   :0
   AGV flag   :0
   OWE flag   :0
   OWE Group  :0
   Duration   :312220
   <7>Jun 29 2021 18:22:45.970.4 yyyy-yyyy-yyyy WSRV/7/BTRACE:(BTRACE)(WLAN_AP)(x-x-x):New Sta OnLine:
   ApId   : 0
   RadioId: 1
   WlanId : 1
   <7>Jun 29 2021 18:22:45.970.5 yyyy-yyyy-yyyy WSRV/7/BTRACE:(BTRACE)(WLAN_AP)(x-x-x):[WPA] Ft reassoc mic check RsnIe:40 FtIe:96 RdIe0.
   <7>Jun 29 2021 18:22:45.970.6 yyyy-yyyy-yyyy WSRV/7/BTRACE:(BTRACE)(WLAN_AP)(x-x-x):[WPA] ReassocR1namecheck
   <7>Jun 29 2021 18:22:45.970.7 yyyy-yyyy-yyyy WSRV/7/BTRACE:(BTRACE)(WLAN_AP)(x-x-x):[WPA]PMKID in Reassoc Req did not match with the PMKR1Name derived from auth request.
   <7>Jun 29 2021 18:22:45.970.8 yyyy-yyyy-yyyy WSRV/7/BTRACE:(BTRACE)(WLAN_AP)(x-x-x):11r assoc check fail, Ret[46]
   <7>Jun 29 2021 18:22:45.980.1 yyyy-yyyy-yyyy WSRV/7/BTRACE:(BTRACE)(WLAN_AP)(x-x-x):WUAMK_UserKernelMsgProc[1245]: Enter:
   radio id    :1
   wlan id     :1
   packet type :32
   result      :46
   <7>Jun 29 2021 18:22:45.980.2 yyyy-yyyy-yyyy WSRV/7/BTRACE:(BTRACE)(WLAN_AP)(x-x-x):[WPA] SAE notify Del sta (R:1, V:2) Ret:185008129
   <7>Jun 29 2021 18:22:46.270.3 yyyy-yyyy-yyyy WSRV/7/BTRACE:(BTRACE)(WLAN_AP)(x-x-x):WUAMK_AssocAlarmCallChainHandle[1420]: Enter:
   radio id    :1
   Vap id      :17
   alarm type  :65545
   RSSI        :0
   <7>Jun 29 2021 18:22:46.270.4 yyyy-yyyy-yyyy WIFI/7/BTRACE:[BTRACE][WLAN_WIFI][x-x-x]:WIFI_DIAG_EVENT_RECV_ASSOCREQ_NOT_AUTHED deny association request, station not authenticated.
   <7>Jun 29 2021 18:22:46.560.3 yyyy-yyyy-yyyy WSRV/7/BTRACE:(BTRACE)(WLAN_AP)(x-x-x):WUAMK_AssocAlarmCallChainHandle[1420]: Enter:
   radio id    :1
   Vap id      :17
   alarm type  :65545
   RSSI        :0
   <7>Jun 29 2021 18:22:46.560.4 yyyy-yyyy-yyyy WIFI/7/BTRACE:[BTRACE][WLAN_WIFI][x-x-x]:WIFI_DIAG_EVENT_RECV_ASSOCREQ_NOT_AUTHED deny association request, station not authenticated.
   <7>Jun 29 2021 18:22:46.860.3 yyyy-yyyy-yyyy WSRV/7/BTRACE:(BTRACE)(WLAN_AP)(x-x-x):WUAMK_AssocAlarmCallChainHandle[1420]: Enter:
   radio id    :1
   Vap id      :17
   alarm type  :65545
   RSSI        :0
   <7>Jun 29 2021 18:22:46.860.4 yyyy-yyyy-yyyy WIFI/7/BTRACE:[BTRACE][WLAN_WIFI][x-x-x]:WIFI_DIAG_EVENT_RECV_ASSOCREQ_NOT_AUTHED deny association request, station not authenticated.
   <7>Jun 29 2021 18:22:47.670.2 yyyy-yyyy-yyyy WSRV/7/BTRACE:(BTRACE)(WLAN_AP)(x-x-x):11R assoc timeout,time[2000] >= cft time[1000]

   Based on the preceding information, HarmonyOS uses Huawei's proprietary 802.11r protocol to implement device-pipe synergy fast roaming, but this function is disabled on the AC by default.

2. Enable Huawei's proprietary 802.11r protocol.

   <AC> system-view
   [AC] wlan
   [AC-wlan-view] ssid-profile name ssid1
   [AC-wlan-ssid-prof-ssid1] dot11r proprietary

3. Disable the 802.11r protocol.

   <AC> system-view
   [AC] wlan
   [AC-wlan-view] ssid-profile name ssid1
   [AC-wlan-ssid-prof-ssid1] undo dot11r enable