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Date: Tue, 11 Jun 2013 14:38:15 +0200 From: Richard GENOUD <richard.genoud@...il.com> To: Larry Finger <Larry.Finger@...inger.net> Cc: Chaoming Li <chaoming_li@...lsil.com.cn>, "John W. Linville" <linville@...driver.com>, linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org Subject: rtl8192cu: slow path warning and connection problem v3.10-rc5 Hi, I've got an usb wireless adapter TP-Link TL-WN725N http://www.tp-link.com/ca/products/details/?categoryid=241&model=TL-WN725N It is based on the rtl8192cu chip. I'm running a recent kernel (3.10-rc5) on a arm-based board (at91sam9g35-ek). and last linux-firmwares (2892af0) The problem I've got it that the device authenticates to the AP (with a slow path warning), but there's no traffic (I can't get an IP address from DHCP for example). Here is the log: ***Insert the TP-Link key [ 22.710937] usb 1-2.3: new high-speed USB device number 3 using atmel-ehci [ 22.828125] rtl8192cu: Chip version 0x10 [ 22.921875] rtl8192cu: MAC address: a0:f3:c1:1a:28:5f [ 22.929687] rtl8192cu: Board Type 0 [ 22.929687] rtlwifi: rx_max_size 15360, rx_urb_num 8, in_ep 1 [ 22.937500] rtl8192cu: Loading firmware rtlwifi/rtl8192cufw.bin [ 22.953125] ieee80211 phy0: Selected rate control algorithm 'rtl_rc' [ 22.968750] rtlwifi: wireless switch is on # ip link set wlan0 up [ 34.656250] rtl8192cu: MAC auto ON okay! [ 34.695312] rtl8192cu: Tx queue select: 0x05 # iw dev wlan0 scan BSS 00:1c:10:69:90:fe (on wlan0) TSF: 1046528539 usec (0d, 00:17:26) freq: 2412 beacon interval: 100 capability: ESS ShortSlotTime (0x0401) signal: -58.00 dBm last seen: 500 ms ago Information elements from Probe Response frame: SSID: test Supported rates: 1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 DS Parameter set: channel 1 TIM: DTIM Count 1 DTIM Period 2 Bitmap Control 0x0 Bitmap[0] 0x0 ERP: Barker_Preamble_Mode Extended supported rates: 24.0 36.0 48.0 54.0 # iw wlan0 connect test [ 51.851562] wlan0: authenticate with 00:1c:10:69:90:fe [ 51.859375] wlan0: Allocated STA 00:1c:10:69:90:fe [ 51.867187] wlan0: Inserted STA 00:1c:10:69:90:fe [ 51.875000] wlan0: direct probe to 00:1c:10:69:90:fe (try 1/3) # [ 52.078125] wlan0: direct probe to 00:1c:10:69:90:fe (try 2/3) [ 52.281250] wlan0: direct probe to 00:1c:10:69:90:fe (try 3/3) [ 52.484375] wlan0: authentication with 00:1c:10:69:90:fe timed out [ 52.484375] wlan0: Removed STA 00:1c:10:69:90:fe [ 52.492187] wlan0: Destroyed STA 00:1c:10:69:90:fe # iw wlan0 connect test # [ 70.718750] wlan0: authenticate with 00:1c:10:69:90:fe [ 70.718750] wlan0: Allocated STA 00:1c:10:69:90:fe [ 70.742187] wlan0: Inserted STA 00:1c:10:69:90:fe [ 70.742187] wlan0: send auth to 00:1c:10:69:90:fe (try 1/3) [ 70.757812] wlan0: authenticated [ 70.757812] wlan0: moving STA 00:1c:10:69:90:fe to state 2 [ 70.765625] rtl8192cu 1-2.3:1.0 wlan0: disabling HT as WMM/QoS is not supported by the AP [ 70.773437] rtl8192cu 1-2.3:1.0 wlan0: disabling VHT as WMM/QoS is not supported by the AP [ 70.789062] wlan0: associate with 00:1c:10:69:90:fe (try 1/3) [ 70.804687] wlan0: RX AssocResp from 00:1c:10:69:90:fe (capab=0x401 status=0 aid=1) [ 70.812500] wlan0: moving STA 00:1c:10:69:90:fe to state 3 [ 70.820312] wlan0: moving STA 00:1c:10:69:90:fe to state 4 [ 70.828125] wlan0: associated [ 71.187500] ------------[ cut here ]------------ [ 71.187500] WARNING: at kernel/workqueue.c:1365 __queue_work+0x180/0x1f8() [ 71.187500] CPU: 0 PID: 593 Comm: kworker/0:2 Not tainted 3.10.0-rc5-00133-g691a986 #6 [ 71.187500] Workqueue: rtl92c_usb rtl_watchdog_wq_callback [ 71.187500] [<c000d2a0>] (unwind_backtrace+0x0/0xf0) from [<c000ba34>] (show_stack+0x10/0x14) [ 71.187500] [<c000ba34>] (show_stack+0x10/0x14) from [<c00150fc>] (warn_slowpath_common+0x48/0x64) [ 71.187500] [<c00150fc>] (warn_slowpath_common+0x48/0x64) from [<c00151e0>] (warn_slowpath_null+0x1c/0x24) [ 71.187500] [<c00151e0>] (warn_slowpath_null+0x1c/0x24) from [<c0029878>] (__queue_work+0x180/0x1f8) [ 71.187500] [<c0029878>] (__queue_work+0x180/0x1f8) from [<c0029ee8>] (queue_work_on+0x44/0x50) [ 71.187500] [<c0029ee8>] (queue_work_on+0x44/0x50) from [<c01fd850>] (rtl_watchdog_wq_callback+0x290/0x4e0) [ 71.187500] [<c01fd850>] (rtl_watchdog_wq_callback+0x290/0x4e0) from [<c002a138>] (process_one_work+0x110/0x358) [ 71.187500] [<c002a138>] (process_one_work+0x110/0x358) from [<c002a728>] (worker_thread+0xf4/0x308) [ 71.187500] [<c002a728>] (worker_thread+0xf4/0x308) from [<c002f8b4>] (kthread+0xa4/0xb0) [ 71.187500] [<c002f8b4>] (kthread+0xa4/0xb0) from [<c00091b0>] (ret_from_fork+0x14/0x24) [ 71.187500] ---[ end trace 5f274d456b3a4c7f ]--- iw dev wlan0 link Connected to 00:1c:10:69:90:fe (on wlan0) SSID: test freq: 2412 RX: 8896 bytes (256 packets) TX: 80 bytes (2 packets) signal: -48 dBm tx bitrate: 1.0 MBit/s bss flags: short-slot-time dtim period: 0 beacon int: 100 # udhcpc -i wlan0 -f -n -q udhcpc (v1.21.0) started Sending discover... Sending discover... Sending discover... No lease, failing **** inserting another key (an older cisco/linksys WUSG54GC) # [ 108.875000] usb 1-2.2: new high-speed USB device number 4 using atmel-ehci [ 109.109375] usb 1-2.2: reset high-speed USB device number 4 using atmel-ehci [ 109.242187] ieee80211 phy1: rt2x00_set_rt: Info - RT chipset 3070, rev 0201 detected [ 109.265625] ieee80211 phy1: rt2x00_set_rf: Info - RF chipset 0006 detected [ 109.273437] ieee80211 phy1: Selected rate control algorithm 'minstrel_ht' # ip link set wlan1 up [ 116.234375] ieee80211 phy1: rt2x00lib_request_firmware: Info - Loading firmware file 'rt2870.bin' [ 116.250000] ieee80211 phy1: rt2x00lib_request_firmware: Info - Firmware detected - version: 0.29 # iw dev wlan1 scan BSS 00:1c:10:69:90:fe (on wlan1) TSF: 1144496990 usec (0d, 00:19:04) freq: 2412 beacon interval: 100 capability: ESS ShortSlotTime (0x0401) signal: -27.00 dBm last seen: 1429 ms ago SSID: test Supported rates: 1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 DS Parameter set: channel 1 ERP: Barker_Preamble_Mode Extended supported rates: 24.0 36.0 48.0 54.0 BSS 00:17:9a:84:fb:94 (on wlan1) TSF: 5965523554325 usec (69d, 01:05:23) freq: 2437 beacon interval: 100 capability: ESS Privacy ShortPreamble ShortSlotTime (0x0431) signal: -55.00 dBm last seen: 960 ms ago Information elements from Probe Response frame: SSID: paratronic Supported rates: 1.0* 2.0* 5.5* 11.0* 6.0 12.0 24.0 36.0 DS Parameter set: channel 6 Country: GB Environment: Indoor/Outdoor Channels [1 - 13] @ 14 dBm ERP: <no flags> Extended supported rates: 9.0 18.0 48.0 54.0 WMM: * Parameter version 1 * BE: CW 15-1023, AIFSN 3 * BK: CW 15-1023, AIFSN 7 * VI: CW 7-15, AIFSN 2, TXOP 3008 usec * VO: CW 3-7, AIFSN 2, TXOP 1504 usec # iw wlan1 connect test [ 135.710937] wlan1: authenticate with 00:1c:10:69:90:fe [ 135.718750] wlan1: Allocated STA 00:1c:10:69:90:fe [ 135.726562] wlan1: Inserted STA 00:1c:10:69:90:fe [ 135.734375] wlan1: send auth to 00:1c:10:69:90:fe (try 1/3) [ 135.742187] wlan1: authenticated [ 135.742187] wlan1: moving STA 00:1c:10:69:90:fe to state 2 # [ 135.750000] rt2800usb 1-2.2:1.0 wlan1: disabling HT as WMM/QoS is not supported by the AP [ 135.757812] rt2800usb 1-2.2:1.0 wlan1: disabling VHT as WMM/QoS is not supported by the AP [ 135.773437] wlan1: associate with 00:1c:10:69:90:fe (try 1/3) [ 135.773437] wlan1: RX AssocResp from 00:1c:10:69:90:fe (capab=0x401 status=0 aid=2) [ 135.789062] wlan1: moving STA 00:1c:10:69:90:fe to state 3 [ 135.796875] wlan1: moving STA 00:1c:10:69:90:fe to state 4 [ 135.812500] wlan1: associated # udhcpc -i wlan1 -f -n -q udhcpc (v1.21.0) started Sending discover... Sending select for 10.125.0.205... Lease of 10.125.0.205 obtained, lease time 60 deleting routers route: SIOCDELRT: No such process # ping 10.125.0.201 PING 10.125.0.201 (10.125.0.201): 56 data bytes . --- 10.125.0.201 ping statistics --- 3 packets transmitted, 0 packets received, 100% packet loss # ping 10.125.0.1 PING 10.125.0.1 (10.125.0.1): 56 data bytes 64 bytes from 10.125.0.1: seq=0 ttl=64 time=6.966 ms 64 bytes from 10.125.0.1: seq=1 ttl=64 time=2.677 ms 64 bytes from 10.125.0.1: seq=2 ttl=64 time=2.895 ms . --- 10.125.0.1 ping statistics --- 3 packets transmitted, 3 packets received, 0% packet loss round-trip min/avg/max = 2.677/4.179/6.966 ms # So it works allright with the other key, but not with the tp-link one. Did I do something wrong ? Regards, Richard. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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