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carl9170 802.11n-AP

DISCUSSION Helge Lenz 2 participants 2 messages Jan 20, 2011

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Helge Lenz

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Quoted 13 lines · Thomas

Today I tried a different wifi card on the client side, instead of the Intel 5100, but the problem remains the same. The carl9170 driver on my server crashes at some point randomly (only in 802.11n mode). The traceback shows the error at tx.c but everytime in a different line. So I guess there must be a race condition somewhere.

Here you can find the error report of some crashes:
http://www.mikrocontroller.net/attachment/95144/bugreport.txt

Server hardware is a Seagate Dockstar with OpenWrt running on it. I heard from another user with Debian, who has the same problem.

Quoted 10 lines

Regards,

Thomas

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Any news about this issue? I have the same problem on a Seagate Goflex Net running debian (Linux debian 2.6.35.4 #9 PREEMPT Tue Jan 18 13:03:42 UTC 2011 armv5tel GNU/Linux). The kernel and the wireless drivers (compat-wireless-v2.6.37-4) are compiled natively on the box and when I try to transmit some data I get the following errors in dmesg:

------------[ cut here ]------------
[ 1015.070483] WARNING: at /usr/src/compat-wireless-2.6.37-4/drivers/net/wireless/ath/carl9170/tx.c:1239 carl9170_op_tx+0x628/0x858 [carl9170]()
[ 1015.083442] Modules linked in:
[ 1015.086361] usb 1-1.2: restart device (5)
[ 1015.090604]  carl9170 mac80211 ath cfg80211 compat ipv6 hmac sha1_generic sata_mv mv_cesa [last unloaded: compat]
[ 1015.101057] [<c003058c>] (unwind_backtrace+0x0/0xf0) from [<c003d6c4>] (warn_slowpath_common+0x4c/0x64)
[ 1015.110504] [<c003d6c4>] (warn_slowpath_common+0x4c/0x64) from [<c003d6f4>] (warn_slowpath_null+0x18/0x1c)
[ 1015.120248] [<c003d6f4>] (warn_slowpath_null+0x18/0x1c) from [<bf1841c4>] (carl9170_op_tx+0x628/0x858 [carl9170])
[ 1015.130702] [<bf1841c4>] (carl9170_op_tx+0x628/0x858 [carl9170]) from [<bf153b8c>] (__ieee80211_tx+0x14c/0x1c8 [mac80211])
[ 1015.141928] [<bf153b8c>] (__ieee80211_tx+0x14c/0x1c8 [mac80211]) from [<bf153cf4>] (ieee80211_tx+0xec/0x29c [mac80211])
[ 1015.152885] [<bf153cf4>] (ieee80211_tx+0xec/0x29c [mac80211]) from [<bf1549e0>] (ieee80211_tx_pending+0x138/0x2a8 [mac80211])
[ 1015.164325] [<bf1549e0>] (ieee80211_tx_pending+0x138/0x2a8 [mac80211]) from [<c00426d0>] (tasklet_action+0x84/0xe4)
[ 1015.174835] [<c00426d0>] (tasklet_action+0x84/0xe4) from [<c0042d14>] (__do_softirq+0x8c/0x124)
[ 1015.183594] [<c0042d14>] (__do_softirq+0x8c/0x124) from [<c0042df4>] (irq_exit+0x48/0xa0)
[ 1015.191832] [<c0042df4>] (irq_exit+0x48/0xa0) from [<c002b070>] (asm_do_IRQ+0x70/0x8c)
[ 1015.199799] [<c002b070>] (asm_do_IRQ+0x70/0x8c) from [<c03b15a8>] (__irq_svc+0x48/0xa8)
[ 1015.207855] Exception stack(0xc04d7f48 to 0xc04d7f90)
[ 1015.212943] 7f40:                   000f1d68 000003e8 000f1d68 20000013 c04dd8d8 c04dd8d8
[ 1015.221175] 7f60: c05a6960 c04da330 00024068 56251311 00023f30 00000000 3b0add45 c04d7f90
[ 1015.229394] 7f80: c005cecc c0034608 20000013 ffffffff
[ 1015.234490] [<c03b15a8>] (__irq_svc+0x48/0xa8) from [<c0034608>] (kirkwood_enter_idle+0x64/0x90)
[ 1015.243342] [<c0034608>] (kirkwood_enter_idle+0x64/0x90) from [<c02de684>] (cpuidle_idle_call+0xb0/0x110)
[ 1015.252976] [<c02de684>] (cpuidle_idle_call+0xb0/0x110) from [<c002c9e0>] (cpu_idle+0x60/0xb8)
[ 1015.261649] [<c002c9e0>] (cpu_idle+0x60/0xb8) from [<c0008988>] (start_kernel+0x280/0x2e0)
[ 1015.269965] [<c0008988>] (start_kernel+0x280/0x2e0) from [<00008034>] (0x8034)
[ 1015.277231] ---[ end trace 2ef0e9214ceebf4c ]---
[ 1515.714312] ------------[ cut here ]------------
[ 1515.719006] WARNING: at /usr/src/compat-wireless-2.6.37-4/drivers/net/wireless/ath/carl9170/tx.c:300 carl9170_tx_status+0x230/0x3e4 [carl9170]()
[ 1515.732047] Modules linked in: carl9170 mac80211 ath cfg80211 compat ipv6 hmac sha1_generic sata_mv mv_cesa [last unloaded: compat]
[ 1515.744065] [<c003058c>] (unwind_backtrace+0x0/0xf0) from [<c003d6c4>] (warn_slowpath_common+0x4c/0x64)
[ 1515.753525] [<c003d6c4>] (warn_slowpath_common+0x4c/0x64) from [<c003d6f4>] (warn_slowpath_null+0x18/0x1c)
[ 1515.763263] [<c003d6f4>] (warn_slowpath_null+0x18/0x1c) from [<bf183388>] (carl9170_tx_status+0x230/0x3e4 [carl9170])
[ 1515.773980] [<bf183388>] (carl9170_tx_status+0x230/0x3e4 [carl9170]) from [<bf184320>] (carl9170_op_tx+0x784/0x858 [carl9170])
[ 1515.785557] [<bf184320>] (carl9170_op_tx+0x784/0x858 [carl9170]) from [<bf153b8c>] (__ieee80211_tx+0x14c/0x1c8 [mac80211])
[ 1515.797154] [<bf153b8c>] (__ieee80211_tx+0x14c/0x1c8 [mac80211]) from [<bf153cf4>] (ieee80211_tx+0xec/0x29c [mac80211])
[ 1515.808120] [<bf153cf4>] (ieee80211_tx+0xec/0x29c [mac80211]) from [<bf15406c>] (ieee80211_xmit+0x1c8/0x1fc [mac80211])
[ 1515.819079] [<bf15406c>] (ieee80211_xmit+0x1c8/0x1fc [mac80211]) from [<bf15538c>] (ieee80211_subif_start_xmit+0x804/0x83c [mac80211])
[ 1515.831306] [<bf15538c>] (ieee80211_subif_start_xmit+0x804/0x83c [mac80211]) from [<c0315020>] (dev_hard_start_xmit+0x2a0/0x3ac)
[ 1515.842948] [<c0315020>] (dev_hard_start_xmit+0x2a0/0x3ac) from [<c03273d8>] (sch_direct_xmit+0x80/0x204)
[ 1515.852580] [<c03273d8>] (sch_direct_xmit+0x80/0x204) from [<c03155d0>] (dev_queue_xmit+0x368/0x5b0)
[ 1515.861785] [<c03155d0>] (dev_queue_xmit+0x368/0x5b0) from [<c035ecf0>] (arp_process+0x32c/0x6f8)
[ 1515.870722] [<c035ecf0>] (arp_process+0x32c/0x6f8) from [<c0313fd0>] (__netif_receive_skb+0x474/0x4cc)
[ 1515.880134] [<c0313fd0>] (__netif_receive_skb+0x474/0x4cc) from [<bf14ef58>] (ieee80211_deliver_skb+0x130/0x168 [mac80211])
[ 1515.891445] [<bf14ef58>] (ieee80211_deliver_skb+0x130/0x168 [mac80211]) from [<bf150614>] (ieee80211_rx_handlers+0x1308/0x18b0 [mac80211])
[ 1515.904526] [<bf150614>] (ieee80211_rx_handlers+0x1308/0x18b0 [mac80211]) from [<bf1514c8>] (ieee80211_prepare_and_rx_handle+0x90c/0x960 [mac80211])
[ 1515.918092] [<bf1514c8>] (ieee80211_prepare_and_rx_handle+0x90c/0x960 [mac80211]) from [<bf151d88>] (ieee80211_rx+0x86c/0x924 [mac80211])
[ 1515.930594] [<bf151d88>] (ieee80211_rx+0x86c/0x924 [mac80211]) from [<bf185100>] (__carl9170_rx+0x808/0x860 [carl9170])
[ 1515.941482] [<bf185100>] (__carl9170_rx+0x808/0x860 [carl9170]) from [<bf185328>] (carl9170_rx_stream+0x1d0/0x334 [carl9170])
[ 1515.952890] [<bf185328>] (carl9170_rx_stream+0x1d0/0x334 [carl9170]) from [<bf17d61c>] (carl9170_usb_tasklet+0x68/0xcc [carl9170])
[ 1515.964720] [<bf17d61c>] (carl9170_usb_tasklet+0x68/0xcc [carl9170]) from [<c00425f0>] (tasklet_hi_action+0x88/0xe4)
[ 1515.975565] [<c00425f0>] (tasklet_hi_action+0x88/0xe4) from [<c0042d14>] (__do_softirq+0x8c/0x124)
[ 1515.984582] [<c0042d14>] (__do_softirq+0x8c/0x124) from [<c0042df4>] (irq_exit+0x48/0xa0)
[ 1515.992821] [<c0042df4>] (irq_exit+0x48/0xa0) from [<c002b070>] (asm_do_IRQ+0x70/0x8c)
[ 1516.000943] [<c002b070>] (asm_do_IRQ+0x70/0x8c) from [<c03b15a8>] (__irq_svc+0x48/0xa8)
[ 1516.008990] Exception stack(0xc04d7f48 to 0xc04d7f90)
[ 1516.014083] 7f40:                   0009c1d3 000003e8 0009c1d3 20000013 c04dd868 c04dd878
[ 1516.022312] 7f60: c05a6960 c04da330 00024068 56251311 00023f30 00000000 261d2322 c04d7f90
[ 1516.030531] 7f80: c005cecc c0034608 20000013 ffffffff
[ 1516.035628] [<c03b15a8>] (__irq_svc+0x48/0xa8) from [<c0034608>] (kirkwood_enter_idle+0x64/0x90)
[ 1516.044480] [<c0034608>] (kirkwood_enter_idle+0x64/0x90) from [<c02de684>] (cpuidle_idle_call+0xb0/0x110)
[ 1516.054112] [<c02de684>] (cpuidle_idle_call+0xb0/0x110) from [<c002c9e0>] (cpu_idle+0x60/0xb8)
[ 1516.062786] [<c002c9e0>] (cpu_idle+0x60/0xb8) from [<c0008988>] (start_kernel+0x280/0x2e0)
[ 1516.071111] [<c0008988>] (start_kernel+0x280/0x2e0) from [<00008034>] (0x8034)
[ 1516.078367] ---[ end trace 2ef0e9214ceebf4d ]---

If I can do anything to debug the error any further I am more then willing to help.

Thanks, Helge.

#1 lore raw
Quoted 1 line · On Thursday 20 January 2011 11:28:22 Helge Lenz wrote:

Any news about this issue?

no news, unless you have news about a new generation of ar9170 chip. The current one has serve problems with 802.11e - which has become mandatory for 802.11n - and aggregation. So going for full 802.11n support [including AP] is sort of pointless...

If you are looking for a 802.11n AP, so why not start with one?

Best Regards,
Chr