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Date: Thu, 7 Feb 2008 15:23:49 +0100 From: "Oliver Pinter" <oliver.pntr@...il.com> To: "Marcin Koziej" <marcinkoziej@...pl> Cc: linux-kernel@...r.kernel.org Subject: Re: Bug? Kernels 2.6.2x drops TCP packets over wireless (independent of card used) hmm, i think, the site is broken (193.219.28.140), and not the card or the driver is wrong. when it does, then other sites are auch reproductable .. /* is use auch madwifi-0.9.3.3, but it think, it is not driver problem */ On 2/7/08, Marcin Koziej <marcinkoziej@...pl> wrote: > > Hello, I have problem with wireless network connectivity; > I have tested this on two wireless cards, both giving same results: > These are: > 1) 02:00.0 Ethernet controller: Atheros Communications, Inc. AR5212 > 802.11abg NIC (rev 01) > working under madwifi-0.9.3.3 > 2) 00:0a.0 Ethernet controller: Linksys, A Division of Cisco Systems > [AirConn] INPROCOMM IPN 2220 Wireless LAN Adapter (rev 01) > working under ndiswrapper on neti2220 driver > > On kernel 2.6.19 both cards are working fine (with same network > configuration) > > Problems arise on kernels 2.6.2x, information below is from 2.6.23, but > 2.6.24-rc8-git7 also was tested: > Both cards can associate with ap, and get TCP/IP configuration from the > router. > Both cards can ping the router (0% packet loss), resolve hostnames using DNS > (suggesting UDP is working fine). > However, when any kind of TCP connection is made, it hangs after initial > handshake and maybe some ammount of data interchanged. This is checked by > tcpdump provided below. > > This happens every time to all tcp connections. > > Example with Atheros card: > ath0 IEEE 802.11g ESSID:"hotspot" Nickname:"" > Mode:Managed Frequency:2.462 GHz Access Point: 00:60:B3:6C:A1:2E > > Bit Rate:11 Mb/s Tx-Power:17 dBm Sensitivity=1/1 > Retry:off RTS thr:off Fragment thr:off > Power Management:off > Link Quality=19/70 Signal level=-77 dBm Noise level=-96 dBm > Rx invalid nwid:43882 Rx invalid crypt:0 Rx invalid frag:0 > Tx excessive retries:0 Invalid misc:0 Missed beacon:0 > > > # ftp ftp.icm.edu.pl > Connected to ftp.icm.edu.pl (193.219.28.140). > 220- > (hangs) > > The packet dump is: > 23:56:08.807674 IP 192.168.1.2.51909 > sunsite2.icm.edu.pl.ftp: S > 980196671:980196671(0) win 5840 <mss 1460,sackOK,timestamp 1971553 > 0,nop,wscale 5> > 0x0000: 4500 003c 885e 4000 4006 124c c0a8 0102 E..<.^@.@....... > 0x0010: c1db 1c8c cac5 0015 3a6c 9d3f 0000 0000 ........:l.?.... > 0x0020: a002 16d0 d91a 0000 0204 05b4 0402 080a ................ > 0x0030: 001e 1561 0000 0000 0103 0305 ...a........ > 23:56:08.821639 IP sunsite2.icm.edu.pl.ftp > 192.168.1.2.51909: S > 2723526584:2723526584(0) ack 980196672 win 5792 <mss 1460,sackOK,timestamp > 983901832 1971553,nop,wscale 7> > 0x0000: 4500 003c 0000 4000 3c06 9eaa c1db 1c8c E..<..@.<....... > 0x0010: c0a8 0102 0015 cac5 a255 b7b8 3a6c 9d40 .........U..:l.@ > 0x0020: a012 16a0 1dfc 0000 0204 05b4 0402 080a ................ > 0x0030: 3aa5 2688 001e 1561 0103 0307 :.&....a.... > 23:56:08.821685 IP 192.168.1.2.51909 > sunsite2.icm.edu.pl.ftp: . ack 1 win > 183 > <nop,nop,timestamp 1971567 983901832> > 0x0000: 4500 0034 885f 4000 4006 1253 c0a8 0102 E..4._@.@....... > 0x0010: c1db 1c8c cac5 0015 3a6c 9d40 a255 b7b9 ........:l.@.... > 0x0020: 8010 00b7 62a3 0000 0101 080a 001e 156f ....b..........o > 0x0030: 3aa5 2688 :.&. > 23:56:08.842801 IP sunsite2.icm.edu.pl.ftp > 192.168.1.2.51909: P 1:7(6) ack > 1 > win 46 <nop,nop,timestamp 983901837 1971567> > 0x0000: 4510 003a 9135 4000 3c06 0d67 c1db 1c8c E..:.5@.<..g.... > 0x0010: c0a8 0102 0015 cac5 a255 b7b9 3a6c 9d40 .........U..:l.@ > 0x0020: 8018 002e f3af 0000 0101 080a 3aa5 268d ............:.&. > 0x0030: 001e 156f 3232 302d 0d0a ...o220-.. > 23:56:08.843069 IP 192.168.1.2.51909 > sunsite2.icm.edu.pl.ftp: . ack 7 win > 183 > <nop,nop,timestamp 1971588 983901837> > 0x0000: 4510 0034 8860 4000 4006 1242 c0a8 0102 E..4.`@.@....... > 0x0010: c1db 1c8c cac5 0015 3a6c 9d40 a255 b7bf ........:l.@.... > 0x0020: 8010 00b7 6283 0000 0101 080a 001e 1584 ....b........... > 0x0030: 3aa5 268d :.&. > 23:56:31.920327 IP 192.168.1.2.51909 > sunsite2.icm.edu.pl.ftp: F 1:1(0) ack > 7 > win 183 <nop,nop,timestamp 1994676 983901837> > 0x0000: 4510 0034 8861 4000 4006 1241 c0a8 0102 E..4.a@.@....... > 0x0010: c1db 1c8c cac5 0015 3a6c 9d40 a255 b7bf ........:l.@.... > 0x0020: 8011 00b7 0852 0000 0101 080a 001e 6fb4 .....R........o. > 0x0030: 3aa5 268d :.&. > 23:56:31.935145 IP sunsite2.icm.edu.pl.ftp > 192.168.1.2.51909: . ack 2 win > 46 > <nop,nop,timestamp 983907613 1994676> > 0x0000: 4510 0034 913d 4000 3c06 0d65 c1db 1c8c E..4.=@.<..e.... > 0x0010: c0a8 0102 0015 cac5 a255 b8e5 3a6c 9d41 .........U..:l.A > 0x0020: 8010 002e f124 0000 0101 080a 3aa5 3d1d .....$......:.=. > 0x0030: 001e 6fb4 ..o. > (no more packets) > > > System: > I am using Atheros Communications, Inc. AR5212 802.11abg NIC PCMCIA card. > Computer is notebook, Acer Aspire 1520. > > I use vanilla kernel: > Linux 2.6.23 #1 Sat Jan 12 12:07:39 CET 2008 i686 AMD Athlon(tm) 64 > Processor > 3700+ AuthenticAMD GNU/Linux > and madwifi driver ath_pci 0.9.4.5 (0.9.3.3) > kernel options: irqpoll (without irqpoll system doesn't detect pcmcia > cards). > > Device detection: > ath_hal: module license 'Proprietary' taints kernel. > ath_hal: 0.9.18.0 (AR5210, AR5211, AR5212, RF5111, RF5112, RF2413, RF5413) > ath_pci: 0.9.4.5 (0.9.3.3) > ath_rate_sample: 1.2 (0.9.3.3) > wifi0: 11b rates: 1Mbps 2Mbps 5.5Mbps 11Mbps > wifi0: 11g rates: 1Mbps 2Mbps 5.5Mbps 11Mbps 6Mbps 9Mbps 12Mbps 18Mbps > 24Mbps > 36Mbps 48Mbps 54Mbps > wifi0: turboG rates: 6Mbps 12Mbps 18Mbps 24Mbps 36Mbps 48Mbps 54Mbps > wifi0: H/W encryption support: WEP AES AES_CCM TKIP > wifi0: mac 5.9 phy 4.3 radio 4.6 > wifi0: Use hw queue 1 for WME_AC_BE traffic > wifi0: Use hw queue 0 for WME_AC_BK traffic > wifi0: Use hw queue 2 for WME_AC_VI traffic > wifi0: Use hw queue 3 for WME_AC_VO traffic > wifi0: Use hw queue 8 for CAB traffic > wifi0: Use hw queue 9 for beacons > wifi0: Atheros 5212: mem=0x34000000, irq=11 > > On the same irq are: > ehci_hcd:usb1 > eth0 > uhci_hcd:usb4 > wifi%d > yenta > > Please CC me in reply, since I'm not subscribed to the list. > If more debug information is needed please don't hesitate to ask. > > Best regards, > Marcin Koziej > > -- > 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/ > -- Thanks, Oliver -- 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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