Preliminary test results - lsusb -d 148f:7601: Bus 001 Device 007: ID 148f:7601 Ralink Technology, Corp. MT7601U Wireless Adapter - https://github.com/kuba-moo/mt7601u - git log -1: commit ad5474ecd9fd6efd4a7f03f4a8c71ea4bb57ca73 Author: Jakub Kicinski <kubakici@xxxxx> Date: Wed May 6 20:44:18 2015 +0200 make sure .disconnect() doesn't cleanup the device if .resume() failed Signed-off-by: Jakub Kicinski <kubakici@xxxxx> - modinfo mt7601u: filename: /lib/modules/4.0.3-202.fc21.x86_64/updates/mt7601u.ko license: GPL firmware: mt7601u.bin alias: usb:v7392p7710d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v2A5Fp1000d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v2955p1001d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v2955p0001d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v2717p4106d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v2001p3D04d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v148Fp760Dd*dc*dsc*dp*ic*isc*ip*in* alias: usb:v148Fp760Cd*dc*dsc*dp*ic*isc*ip*in* alias: usb:v148Fp760Bd*dc*dsc*dp*ic*isc*ip*in* alias: usb:v148Fp760Ad*dc*dsc*dp*ic*isc*ip*in* alias: usb:v148Fp7601d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v13D3p3434d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v13D3p3431d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v0E8Dp760Bd*dc*dsc*dp*ic*isc*ip*in* alias: usb:v0E8Dp760Ad*dc*dsc*dp*ic*isc*ip*in* alias: usb:v0B05p17D3d*dc*dsc*dp*ic*isc*ip*in* depends: cfg80211,mac80211 vermagic: 4.0.3-202.fc21.x86_64 SMP mod_unload signer: Fedora kernel signing key sig_key: 95:7D:C8:E5:9F:5D:E6:03:71:49:1A:D0:9A:C6:8F:85:16:6C:B3:94 sig_hashalgo: sha256 - md5sum /lib/firmware/mt7601u.bin: 696cedb8e76ecc0cda9f9b0d3972c64d /lib/firmware/mt7601u.bin - NetworkManager --version: 1.0.2-2.fc21 plug in device: - dmesg: usb 1-4: new high-speed USB device number 6 using ehci-pci usb 1-4: New USB device found, idVendor=148f, idProduct=7601 usb 1-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 1-4: Product: 802.11 n WLAN usb 1-4: Manufacturer: MediaTek usb 1-4: SerialNumber: 1.0 cfg80211: ... ... usb 1-4: reset high-speed USB device number 6 using ehci-pci mt7601u 1-4:1.0: ASIC revision: 76010001 MAC revision: 76010500 mt7601u 1-4:1.0: Firmware Version: 0.1.00 Build: 7640 Build time: 201302052146____ mt7601u 1-4:1.0: Warning: unsupported EEPROM version 0d mt7601u 1-4:1.0: EEPROM ver:0d fae:00 ieee80211 phy0: Selected rate control algorithm 'minstrel_ht' usbcore: registered new interface driver mt7601u mt7601u 1-4:1.0 wlp0s2f1u4: renamed from wlan0 ... cfg80211: ... ... wlp0s2f1u4: authenticate with <BSSID> wlp0s2f1u4: send auth to <BSSID> (try 1/3) wlp0s2f1u4: authenticated wlp0s2f1u4: associate with <BSSID> (try 1/3) wlp0s2f1u4: RX AssocResp from <BSSID> (capab=0x411 status=0 aid=1) wlp0s2f1u4: associated - iwconfig wlp0s2f1u4: wlp0s2f1u4 IEEE 802.11bgn ESSID:"AP" Mode:Managed Frequency:2.422 GHz Access Point: <BSSID> Bit Rate=135 Mb/s Tx-Power=20 dBm Retry short limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:off Link Quality=67/70 Signal level=-43 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:873 Missed beacon:0 == suspend to ram test == while connected: - systemctl suspend - dmesg: wlp0s2f1u4: deauthenticating from <BSSID> by local choice (Reason: 3=DEAUTH_LEAVING) cfg80211: ... ... PM: Syncing filesystems ... done. PM: Preparing system for mem sleep Freezing user space processes ... (elapsed 0.001 seconds) done. Freezing remaining freezable tasks ... (elapsed 0.000 seconds) done. PM: Entering mem sleep PM: suspend of devices complete after 2579.708 msecs PM: late suspend of devices complete after 0.653 msecs PM: noirq suspend of devices complete after 11.487 msecs ACPI: Preparing to enter system sleep state S3 PM: Saving platform NVS memory ... .. . RESUME . .. ... ACPI: Low-level resume complete PM: Restoring platform NVS memory ACPI: Waking up from system sleep state S3 PM: noirq resume of devices complete after 84.948 msecs PM: early resume of devices complete after 0.520 msecs ... mt7601u 1-4:1.0: Error: MCU response pre-completed! mt7601u 1-4:1.0: Warning: unsupported EEPROM version 0d mt7601u 1-4:1.0: EEPROM ver:0d fae:00 ... PM: resume of devices complete after 313.068 msecs PM: Finishing wakeup. Restarting tasks ... ... wlp0s2f1u4: authenticate with <BSSID> wlp0s2f1u4: send auth to <BSSID> (try 1/3) wlp0s2f1u4: authenticated wlp0s2f1u4: associate with <BSSID> (try 1/3) wlp0s2f1u4: RX AssocResp from <BSSID> (capab=0x411 status=0 aid=1) wlp0s2f1u4: associated ... ------------[ cut here ]------------ WARNING: CPU: 0 PID: 0 at kernel/softirq.c:150 __local_bh_enable_ip+0x72/0xa0() Modules linked in: ...mt7601u(O) mac80211 cfg80211 ... CPU: 0 PID: 0 Comm: swapper/0 Tainted: G C O 4.0.3-202.fc21.x86_64 #1 ... Call Trace: <IRQ> [<ffffffff8177cc28>] dump_stack+0x45/0x57 [<ffffffff8109d5ea>] warn_slowpath_common+0x8a/0xc0 [<ffffffff8109d71a>] warn_slowpath_null+0x1a/0x20 [<ffffffff810a14f2>] __local_bh_enable_ip+0x72/0xa0 [<ffffffffa064868b>] destroy_conntrack+0x7b/0x100 [nf_conntrack] [<ffffffff8169d0e7>] nf_conntrack_destroy+0x17/0x30 [<ffffffff81652165>] skb_release_head_state+0x95/0xe0 [<ffffffff816521c6>] skb_release_all+0x16/0x30 [<ffffffff8165240c>] consume_skb+0x2c/0x80 [<ffffffffa08913d6>] ieee80211_tx_status+0xb66/0xe60 [mac80211] [<ffffffff8157ba88>] ? ehci_work.part.62+0x9a8/0xa50 [<ffffffffa07dedb4>] ? ieee80211_get_hdrlen_from_skb+0x24/0x40 [cfg80211] [<ffffffffa07c4997>] mt7601u_tx_status+0x87/0xa0 [mt7601u] [<ffffffffa07bf00e>] mt7601u_complete_tx+0x8e/0x1c0 [mt7601u] [<ffffffff8155a065>] __usb_hcd_giveback_urb+0x85/0x140 [<ffffffff8155ad0b>] usb_giveback_urb_bh+0xab/0x100 [<ffffffff810a1786>] tasklet_action+0xe6/0xf0 [<ffffffff810a1bab>] __do_softirq+0x10b/0x2b0 [<ffffffff810a1f75>] irq_exit+0x125/0x130 [<ffffffff817860e8>] do_IRQ+0x58/0xf0 [<ffffffff81783e2d>] common_interrupt+0x6d/0x6d <EOI> [<ffffffff8104d369>] ? lapic_timer_setup+0x19/0x20 [<ffffffff8105fb86>] ? native_safe_halt+0x6/0x10 [<ffffffff8101fade>] default_idle+0x1e/0xc0 [<ffffffff8101fbff>] amd_e400_idle+0x7f/0x120 [<ffffffff810205af>] arch_cpu_idle+0xf/0x20 [<ffffffff810e02aa>] cpu_startup_entry+0x30a/0x420 [<ffffffff81773137>] rest_init+0x77/0x80 [<ffffffff81d4b03a>] start_kernel+0x4a3/0x4c4 [<ffffffff81d4a120>] ? early_idt_handlers+0x120/0x120 [<ffffffff81d4a4d7>] x86_64_start_reservations+0x2a/0x2c [<ffffffff81d4a63a>] x86_64_start_kernel+0x161/0x184 ---[ end trace dfa8ecf6346f14b1 ]--- == mini stress test == 1. unplug device while connected: - dmesg: ... usb 1-4: USB disconnect, device number 4 wlp0s2f1u4: deauthenticating from <BSSID> by local choice (Reason: 3=DEAUTH_LEAVING) mt7601u 1-4:1.0: mt7601u_rxdc_cal timed out ... 2. plug in device a few seconds after: - dmesg: ... usb 1-4: new high-speed USB device number 7 using ehci-pci usb 1-4: New USB device found, idVendor=148f, idProduct=7601 usb 1-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 1-4: Product: 802.11 n WLAN usb 1-4: Manufacturer: MediaTek usb 1-4: SerialNumber: 1.0 usb 1-4: reset high-speed USB device number 7 using ehci-pci mt7601u 1-4:1.0: ASIC revision: 76010001 MAC revision: 76010500 mt7601u 1-4:1.0: Firmware Version: 0.1.00 Build: 7640 Build time: 201302052146____ mt7601u 1-4:1.0: Warning: unsupported EEPROM version 0d mt7601u 1-4:1.0: EEPROM ver:0d fae:00 mt7601u 1-4:1.0: Error: RX urb failed:-71 mt7601u 1-4:1.0: Error: MCU resp urb failed:-71 mt7601u 1-4:1.0: Error: MCU resp evt:0 seq:5-4! mt7601u 1-4:1.0: Error: RX urb failed:-71 mt7601u 1-4:1.0: Error: MCU resp urb failed:-71 mt7601u 1-4:1.0: Error: MCU resp evt:0 seq:5-4! mt7601u 1-4:1.0: Error: RX urb failed:-71 mt7601u 1-4:1.0: Error: MCU resp urb failed:-71 mt7601u 1-4:1.0: Error: MCU resp evt:0 seq:5-4! mt7601u 1-4:1.0: Error: RX urb failed:-71 mt7601u 1-4:1.0: Error: MCU resp urb failed:-71 mt7601u 1-4:1.0: Error: MCU resp evt:0 seq:5-4! mt7601u 1-4:1.0: Error: RX urb failed:-71 mt7601u 1-4:1.0: Error: MCU resp urb failed:-71 mt7601u 1-4:1.0: Error: MCU resp evt:0 seq:5-4! mt7601u 1-4:1.0: Error: mt7601u_mcu_wait_resp timed out mt7601u 1-4:1.0: Vendor request req:07 off:0080 failed:-71 mt7601u 1-4:1.0: Vendor request req:02 off:0080 failed:-71 mt7601u 1-4:1.0: Vendor request req:02 off:0080 failed:-71 mt7601u: probe of 1-4:1.0 failed with error -110 usb 1-4: USB disconnect, device number 7 usb 1-4: new high-speed USB device number 8 using ehci-pci usb 1-4: New USB device found, idVendor=148f, idProduct=7601 usb 1-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 1-4: Product: 802.11 n WLAN usb 1-4: Manufacturer: MediaTek usb 1-4: SerialNumber: 1.0 usb 1-4: reset high-speed USB device number 8 using ehci-pci mt7601u 1-4:1.0: ASIC revision: 76010001 MAC revision: 76010500 mt7601u 1-4:1.0: Warning: unsupported EEPROM version 0d mt7601u 1-4:1.0: EEPROM ver:0d fae:00 ieee80211 phy2: Selected rate control algorithm 'minstrel_ht' mt7601u 1-4:1.0 wlp0s2f1u4: renamed from wlan0 ... wlp0s2f1u4: authenticate with <BSSID> wlp0s2f1u4: send auth to <BSSID> (try 1/3) wlp0s2f1u4: authenticated wlp0s2f1u4: associate with <BSSID> (try 1/3) wlp0s2f1u4: RX AssocResp from <BSSID> (capab=0x411 status=0 aid=1) wlp0s2f1u4: associated ... ------------[ cut here ]------------ WARNING: CPU: 3 PID: 0 at kernel/softirq.c:150 __local_bh_enable_ip+0x72/0xa0() Modules linked in: ... mt7601u(O) mac80211 cfg80211 ... CPU: 3 PID: 0 Comm: swapper/3 Tainted: G O 4.0.3-202.fc21.x86_64 #1 ... Call Trace: <IRQ> [<ffffffff8177cc28>] dump_stack+0x45/0x57 [<ffffffff8109d5ea>] warn_slowpath_common+0x8a/0xc0 [<ffffffff8109d71a>] warn_slowpath_null+0x1a/0x20 [<ffffffff810a14f2>] __local_bh_enable_ip+0x72/0xa0 [<ffffffffa06c268b>] destroy_conntrack+0x7b/0x100 [nf_conntrack] [<ffffffff8169d0e7>] nf_conntrack_destroy+0x17/0x30 [<ffffffff81652165>] skb_release_head_state+0x95/0xe0 [<ffffffff816521c6>] skb_release_all+0x16/0x30 [<ffffffff8165240c>] consume_skb+0x2c/0x80 [<ffffffffa07703d6>] ieee80211_tx_status+0xb66/0xe60 [mac80211] [<ffffffff8157ba88>] ? ehci_work.part.62+0x9a8/0xa50 [<ffffffffa0620db4>] ? ieee80211_get_hdrlen_from_skb+0x24/0x40 [cfg80211] [<ffffffffa043c997>] mt7601u_tx_status+0x87/0xa0 [mt7601u] [<ffffffffa043700e>] mt7601u_complete_tx+0x8e/0x1c0 [mt7601u] [<ffffffff8155a065>] __usb_hcd_giveback_urb+0x85/0x140 [<ffffffff8155ad0b>] usb_giveback_urb_bh+0xab/0x100 [<ffffffff810a1786>] tasklet_action+0xe6/0xf0 [<ffffffff810a1bab>] __do_softirq+0x10b/0x2b0 [<ffffffff810a1f75>] irq_exit+0x125/0x130 [<ffffffff817860e8>] do_IRQ+0x58/0xf0 [<ffffffff81783e2d>] common_interrupt+0x6d/0x6d <EOI> [<ffffffff8104d369>] ? lapic_timer_setup+0x19/0x20 [<ffffffff8105fb86>] ? native_safe_halt+0x6/0x10 [<ffffffff8101fade>] default_idle+0x1e/0xc0 [<ffffffff8101fbff>] amd_e400_idle+0x7f/0x120 [<ffffffff810205af>] arch_cpu_idle+0xf/0x20 [<ffffffff810e02aa>] cpu_startup_entry+0x30a/0x420 [<ffffffff8104b5c5>] start_secondary+0x1a5/0x1f0 ---[ end trace 453a9db773f4554b ]--- == throughput test == MT7601U Wi-Fi <~1m LOS~> AP(Wi-Fi <-bridge-> 100Mbit switch) <-> SERVER - iperf -c <SERVER> -i 1: ------------------------------------------------------------ Client connecting to <SERVER>, TCP port 5001 TCP window size: 85.0 KByte (default) ------------------------------------------------------------ [ 3] local <CLIENT IP> port 45680 connected with <SERVER IP> port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0- 1.0 sec 11.2 MBytes 94.4 Mbits/sec [ 3] 1.0- 2.0 sec 11.2 MBytes 94.4 Mbits/sec [ 3] 2.0- 3.0 sec 11.0 MBytes 92.3 Mbits/sec [ 3] 3.0- 4.0 sec 11.1 MBytes 93.3 Mbits/sec [ 3] 4.0- 5.0 sec 10.8 MBytes 90.2 Mbits/sec [ 3] 5.0- 6.0 sec 11.2 MBytes 94.4 Mbits/sec [ 3] 6.0- 7.0 sec 10.5 MBytes 88.1 Mbits/sec [ 3] 7.0- 8.0 sec 10.4 MBytes 87.0 Mbits/sec [ 3] 8.0- 9.0 sec 11.0 MBytes 92.3 Mbits/sec [ 3] 9.0-10.0 sec 11.4 MBytes 95.4 Mbits/sec [ 3] 0.0-10.0 sec 110 MBytes 92.1 Mbits/sec -- 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
