Hi, I have split my issues into individual discussions: > AP deauthentication. > ===================== > When any of the ieee80211_rx_mgmt_deauth() or > ieee80211_rx_mgmt_disassoc() are executed, the mac layer takes two actions. > 1) Tells wpa_supplicant what had happened. > 2) Start reestabliching the connaction again. > > The later action will stop or significantly delay the decisions/action > taken by wpa_supplicant as a result of action 1. Normally the > supplicant will start an AP scan. > But the mac layer is busy with reestablishing the link and will not > start any scan action. > > Does associating actually block scanning? > > If it doesn't, it really should. There's been a number of problems > over the years with scan requests screwing up association because the > card is on a different channel and misses the association/auth > exchanges. To ensure that association/authentication is as robust as > possible, the driver should refuse scans while association is ongoing. > > > My patches simply put the mac layer in IEEE80211_DISABLED state and > wait for the supplicant to decide. > > That would break supplicant-less operation which we can't do. > > > Good point. The patch might not work for all use cases, but might be configurable for the wpa_supplicant. The following trace is an example before the patch where the STA roams from 60:00 to 84:20: =========================================================== <4>[ 513.630484] LaE: ieee80211_associated: bssid=00:0f:24:d1:60:00, diff= 419, bcnt= 9, last: rssi=-78, signa= 23, noise= 0 <7>[ 513.964713] wlan0: RX deauthentication from 00:0f:24:d1:60:00 (reason=2) <7>[ 513.964761] wlan0: deauthenticated <7>[ 514.963454] wlan0: authenticate with AP 00:0f:24:d1:60:00 <7>[ 514.965015] wlan0: RX authentication from 00:0f:24:d1:60:00 (alg=0 transaction=2 status=0) <7>[ 514.965060] wlan0: authenticated <7>[ 514.965089] wlan0: associate with AP 00:0f:24:d1:60:00 <7>[ 514.975332] wlan0: RX ReassocResp from 00:0f:24:d1:60:00 (capab=0x431 status=0 aid=43) <7>[ 514.975387] wlan0: associated <7>[ 514.975429] wlan0: CTS protection enabled (BSSID=00:0f:24:d1:60:00) <7>[ 515.002555] HW CONFIG: channel=1 freq=2412 phymode=2 <7>[ 515.066225] HW CONFIG: channel=2 freq=2417 phymode=2 <7>[ 515.130252] HW CONFIG: channel=3 freq=2422 phymode=2 <7>[ 515.194672] HW CONFIG: channel=4 freq=2427 phymode=2 <7>[ 515.258189] HW CONFIG: channel=5 freq=2432 phymode=2 <7>[ 515.322688] HW CONFIG: channel=6 freq=2437 phymode=2 <7>[ 515.386038] HW CONFIG: channel=7 freq=2442 phymode=2 <7>[ 515.450156] HW CONFIG: channel=8 freq=2447 phymode=2 <7>[ 515.514878] HW CONFIG: channel=9 freq=2452 phymode=2 <7>[ 515.578011] HW CONFIG: channel=10 freq=2457 phymode=2 <7>[ 515.642574] HW CONFIG: channel=11 freq=2462 phymode=2 <7>[ 515.706186] HW CONFIG: channel=12 freq=2467 phymode=2 <7>[ 515.769983] HW CONFIG: channel=13 freq=2472 phymode=2 <7>[ 515.835163] HW CONFIG: channel=7 freq=2442 phymode=2 <7>[ 515.846340] wlan0: set_encrypt - unknown addr 00:0e:d7:ac:84:20 <7>[ 515.848784] HW CONFIG: channel=1 freq=2412 phymode=2 <7>[ 515.851425] wlan0: Initial auth_alg=0 <7>[ 515.851585] wlan0: authenticate with AP 00:0f:24:d1:60:00 <6>[ 515.858226] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 0 - CWmin: 4, CWmax: 10, Aifs: 2. <6>[ 515.858287] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 1 - CWmin: 4, CWmax: 10, Aifs: 2. <6>[ 515.858328] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 2 - CWmin: 4, CWmax: 10, Aifs: 2. <6>[ 515.858370] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 3 - CWmin: 4, CWmax: 10, Aifs: 2. <6>[ 515.858411] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 4 - CWmin: 4, CWmax: 10, Aifs: 2. <6>[ 515.858453] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 7 - CWmin: 5, CWmax: 10, Aifs: 2. <7>[ 515.859260] wlan0: Initial auth_alg=0 <7>[ 515.859417] wlan0: authenticate with AP 00:0e:d7:ac:84:20 <7>[ 515.865693] wlan0: RX authentication from 00:0e:d7:ac:84:20 (alg=0 transaction=2 status=0) <7>[ 515.865866] wlan0: authenticated <7>[ 515.866060] wlan0: associate with AP 00:0e:d7:ac:84:20 <7>[ 515.868272] wlan0: RX ReassocResp from 00:0e:d7:ac:84:20 (capab=0x431 status=0 aid=218) <7>[ 515.868437] wlan0: associated <7>[ 515.870163] phy0: Added STA 00:0e:d7:ac:84:20 <7>[ 515.870353] wlan0: WMM queue=2 aci=0 acm=0 aifs=3 cWmin=15 cWmax=1023 burst=0 After the patch it looks as follows: where the STA roams from 60:00 to 64:f0: =========================================================== Feb 26 09:07:43 (none) user.debug kernel: [ 1146.008642] wlan0: RX deauthentication from 00:0f:24:d1:60:00 (reason=2) Feb 26 09:07:43 (none) user.debug kernel: [ 1146.008691] wlan0: deauthenticated Feb 26 09:07:43 (none) user.warn kernel: [ 1146.008712] LaE: [ieee80211_rx_mgmt_deauth] set IEEE80211_DISABLED Feb 26 09:07:43 (none) user.debug kernel: [ 1146.146694] HW CONFIG: channel=1 freq=2412 phymode=2 Feb 26 09:07:43 (none) user.debug kernel: [ 1146.220021] HW CONFIG: channel=6 freq=2437 phymode=2 Feb 26 09:07:43 (none) user.debug kernel: [ 1146.291429] HW CONFIG: channel=7 freq=2442 phymode=2 Feb 26 09:07:43 (none) user.debug kernel: [ 1146.368633] HW CONFIG: channel=11 freq=2462 phymode=2 Feb 26 09:07:43 (none) user.debug kernel: [ 1146.435768] HW CONFIG: channel=13 freq=2472 phymode=2 Feb 26 09:07:43 (none) user.debug kernel: [ 1146.508241] HW CONFIG: channel=7 freq=2442 phymode=2 Feb 26 09:07:43 (none) user.debug kernel: [ 1146.520670] wlan0: set_encrypt - unknown addr 00:0e:d7:ca:64:f0 Feb 26 09:07:43 (none) user.debug kernel: [ 1146.521289] HW CONFIG: channel=13 freq=2472 phymode=2 Feb 26 09:07:43 (none) user.debug kernel: [ 1146.523450] wlan0: Initial auth_alg=0 Feb 26 09:07:43 (none) user.debug kernel: [ 1146.528055] wlan0: authenticate with AP 00:0f:24:d1:60:00 Feb 26 09:07:43 (none) user.info kernel: [ 1146.528888] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 0 - CWmin: 4, CWmax: 10, Aifs: 2. Feb 26 09:07:43 (none) user.info kernel: [ 1146.528948] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 1 - CWmin: 4, CWmax: 10, Aifs: 2. Feb 26 09:07:43 (none) user.info kernel: [ 1146.528989] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 2 - CWmin: 4, CWmax: 10, Aifs: 2. Feb 26 09:07:43 (none) user.info kernel: [ 1146.529030] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 3 - CWmin: 4, CWmax: 10, Aifs: 2. Feb 26 09:07:43 (none) user.info kernel: [ 1146.529072] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 4 - CWmin: 4, CWmax: 10, Aifs: 2. Feb 26 09:07:43 (none) user.info kernel: [ 1146.529114] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 7 - CWmin: 5, CWmax: 10, Aifs: 2. Feb 26 09:07:43 (none) user.debug kernel: [ 1146.540333] wlan0: Initial auth_alg=0 Feb 26 09:07:43 (none) user.debug kernel: [ 1146.540389] wlan0: authenticate with AP 00:0e:d7:ca:64:f0 Feb 26 09:07:43 (none) user.debug kernel: [ 1146.542411] wlan0: RX authentication from 00:0e:d7:ca:64:f0 (alg=0 transaction=2 status=0) Feb 26 09:07:43 (none) user.debug kernel: [ 1146.542464] wlan0: authenticated Feb 26 09:07:43 (none) user.debug kernel: [ 1146.542493] wlan0: associate with AP 00:0e:d7:ca:64:f0 Feb 26 09:07:43 (none) user.debug kernel: [ 1146.550157] wlan0: RX ReassocResp from 00:0e:d7:ca:64:f0 (capab=0x431 status=0 aid=164) Feb 26 09:07:43 (none) user.debug kernel: [ 1146.550210] wlan0: associated /Lars - To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
