* For Help: problems with tx bitrate in ath10k
@ 2014-04-08 8:51 wangdc
2014-04-09 3:11 ` Yeoh Chun-Yeow
0 siblings, 1 reply; 3+ messages in thread
From: wangdc @ 2014-04-08 8:51 UTC (permalink / raw)
To: ath10k@lists.infradead.org
Hi,all
I used the backports-3.13.2-1 to drive a 11ac card(WLE900VX) on the
ubuntu 12.04 LTS(64bit) (3.8.0-35-generic).
The card seemed to be working well when i connected it to a broadcom AC
APs and the card could also send or receive data normally.
But when using command 'iw dev wlan0 station dump' to check the actual
Rx and Tx rate, i couldn't get the tx bitrate correctly.
root@ubuntu:~$ iw dev wlan2 station dump
Station 10:48:b1:e8:17:a6 (on wlan2)
inactive time: 28680 ms
rx bytes: 903704
rx packets: 6747
tx bytes: 20731
tx packets: 163
tx retries: 1969
tx failed: 0
signal: -36 dBm
signal avg: -36 dBm
tx bitrate: MCS 32 40Mhz short GI
authorized: yes
authenticated: yes
preamble: long
WMM/WME: yes
MFP: no
TDLS peer: no
And sometimes the tx bitrate was 3693.3 MBit/s, 65.0 MBit/s, 6.5Mbit/s etc.
The start log as following.
root@ubuntu:~$ dmesg | grep ath
[ 0.800424] MODSIGN: Loaded cert 'Magrathea: Glacier signing key:
c77318d5b035f7cbfa665f640863f8bc32a3fa33'
[ 10.539694] ath10k_pci 0000:04:00.0: BAR 0: assigned [mem
0xf0400000-0xf05fffff 64bit]
[ 10.886386] ath10k: MSI-X didn't succeed (1), trying MSI
[ 10.886454] ath10k_pci 0000:04:00.0: irq 44 for MSI/MSI-X
[ 10.886492] ath10k: MSI interrupt handling
[ 10.921722] ath10k: Hardware name qca988x hw2.0 version 0x4100016c
[ 12.246510] ath10k: UART prints disabled
[ 12.250960] ath10k: firmware 10.1.467.2-1 booted
[ 12.260459] ath10k: htt target version 2.1
[ 12.261559] ath: EEPROM regdomain: 0x0
[ 12.261561] ath: EEPROM indicates default country code should be used
[ 12.261562] ath: doing EEPROM country->regdmn map search
[ 12.261563] ath: country maps to regdmn code: 0x3a
[ 12.261565] ath: Country alpha2 being used: US
[ 12.261566] ath: Regpair used: 0x3a
[ 18.767377] ath10k: MSI-X didn't succeed (1), trying MSI
[ 18.767451] ath10k_pci 0000:04:00.0: irq 44 for MSI/MSI-X
[ 18.767496] ath10k: MSI interrupt handling
[ 19.700523] ath10k: UART prints disabled
[ 19.705037] ath10k: firmware 10.1.467.2-1 booted
[ 19.714921] ath10k: htt target version 2.1
...
root@ubuntu:~$ dmesg
[ 121.846056] ------------[ cut here ]------------
[ 121.846090] WARNING: at /home/backports/net/wireless/util.c:1066
cfg80211_calculate_bitrate+0x18e/0x210 [cfg80211]()
[ 121.846093] Hardware name: 23066RC
[ 121.846094] Modules linked in: ip_vs(F) nf_conntrack(F) libcrc32c(F)
bnep(F) rfcomm(F) parport_pc(F) ppdev(F) arc4(F) coretemp(F)
snd_hda_codec_hdmi(F) snd_hda_codec_realtek(F) ath10k_pci(OF)
ath10k_core(OF) uvcvideo(F) nfsd(F) snd_hda_intel(F) kvm(F)
snd_hda_codec(F) ath(OF) videobuf2_core(F) nfs_acl(F) videodev(F)
auth_rpcgss(F) i915(F) nfs(F) videobuf2_vmalloc(F) snd_hwdep(F) btusb(F)
snd_pcm(F) mac80211(OF) videobuf2_memops(F) joydev(F) fscache(F)
bluetooth(F) ghash_clmulni_intel(F) thinkpad_acpi(F) lockd(F)
snd_seq_midi(F) cryptd(F) drm_kms_helper(F) binfmt_misc(F)
snd_rawmidi(F) drm(F) snd_seq_midi_event(F) cfg80211(OF) sunrpc(F)
snd_seq(F) psmouse(F) snd_timer(F) snd_seq_device(F) mei(F) snd(F)
microcode(F) serio_raw(F) mac_hid(F) i2c_algo_bit(F) snd_page_alloc(F)
compat(OF) soundcore(F) lpc_ich(F) nvram(F) wmi(F) video(F) lp(F)
parport(F) sdhci_pci(F) sdhci(F) e1000e(F)
[ 121.846157] Pid: 1050, comm: NetworkManager Tainted: GF O
3.8.0-35-generic #52~precise1-Ubuntu
[ 121.846159] Call Trace:
[ 121.846171] [<ffffffff81059b6f>] warn_slowpath_common+0x7f/0xc0
[ 121.846177] [<ffffffff81059bca>] warn_slowpath_null+0x1a/0x20
[ 121.846193] [<ffffffffa019c8de>]
cfg80211_calculate_bitrate+0x18e/0x210 [cfg80211]
[ 121.846212] [<ffffffffa01a99a7>] nl80211_put_sta_rate+0x57/0x2a0
[cfg80211]
[ 121.846229] [<ffffffffa01ac0e1>]
nl80211_send_station.isra.63+0x4a1/0x870 [cfg80211]
[ 121.846246] [<ffffffffa01ac98c>] nl80211_get_station+0x22c/0x290
[cfg80211]
[ 121.846254] [<ffffffff8160f6dd>] genl_rcv_msg+0x22d/0x2b0
[ 121.846260] [<ffffffff815d830b>] ? __alloc_skb+0x8b/0x2a0
[ 121.846264] [<ffffffff8160f4b0>] ? genl_rcv+0x40/0x40
[ 121.846270] [<ffffffff8160ee89>] netlink_rcv_skb+0xa9/0xd0
[ 121.846274] [<ffffffff8160f495>] genl_rcv+0x25/0x40
[ 121.846279] [<ffffffff8160e7d1>] netlink_unicast+0x1b1/0x230
[ 121.846285] [<ffffffff8160eb4e>] netlink_sendmsg+0x2fe/0x3b0
[ 121.846290] [<ffffffff815cb282>] sock_sendmsg+0xd2/0xf0
[ 121.846296] [<ffffffff815cdb8a>] ? move_addr_to_kernel+0x5a/0xa0
[ 121.846300] [<ffffffff815da406>] ? verify_iovec+0x56/0xd0
[ 121.846305] [<ffffffff815cd09c>] ___sys_sendmsg+0x3ac/0x3c0
[ 121.846311] [<ffffffff811aea86>] ? pollwake+0x66/0x70
[ 121.846316] [<ffffffff81092050>] ? try_to_wake_up+0x200/0x200
[ 121.846323] [<ffffffff816f53e5>] ? _raw_spin_lock_irq+0x15/0x20
[ 121.846327] [<ffffffff81092050>] ? try_to_wake_up+0x200/0x200
[ 121.846332] [<ffffffff815ceba9>] __sys_sendmsg+0x49/0x90
[ 121.846337] [<ffffffff815cec09>] sys_sendmsg+0x19/0x20
[ 121.846343] [<ffffffff816fdf5d>] system_call_fastpath+0x1a/0x1f
[ 121.846346] ---[ end trace fc50900f4228222f ]---
About the reason of the warning info above,
when debugging the code, rate->flags was 0x0 and the rate->mcs value was
more than 32 in the function of cfg80211_calculate_bitrate,
but i didn't know why i got a wrong rate value.
/home/backports/net/wireless/util.c
u32 cfg80211_calculate_bitrate(struct rate_info *rate)
{
int modulation, streams, bitrate;
if (!(rate->flags & RATE_INFO_FLAGS_MCS) &&
!(rate->flags & RATE_INFO_FLAGS_VHT_MCS))
return rate->legacy;
if (rate->flags & RATE_INFO_FLAGS_60G)
return cfg80211_calculate_bitrate_60g(rate);
if (rate->flags & RATE_INFO_FLAGS_VHT_MCS)
return cfg80211_calculate_bitrate_vht(rate);
/* the formula below does only work for MCS values smaller than 32 */
if (WARN_ON_ONCE(rate->mcs >= 32))
return 0;
I tried other version of the firmware and backports, the test results
were as following:
a)The problem repeated when i tried firmware-2.bin_999.999.0.636.
b)The tx bitrate was fixed to 6MBit/s and there was no warning info in
the boot log when i adopted the latest development
releases(backports-20140221).
Is there anybody meets the same problem? If so, please give me some
suggestion on getting Tx rate properly.
Thanks.
Rex
_______________________________________________
ath10k mailing list
ath10k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath10k
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: For Help: problems with tx bitrate in ath10k
2014-04-08 8:51 For Help: problems with tx bitrate in ath10k wangdc
@ 2014-04-09 3:11 ` Yeoh Chun-Yeow
2014-04-09 11:11 ` Kalle Valo
0 siblings, 1 reply; 3+ messages in thread
From: Yeoh Chun-Yeow @ 2014-04-09 3:11 UTC (permalink / raw)
To: wangdc; +Cc: ath10k@lists.infradead.org
Need firmware change to get proper Tx rate as pointed out by Kalle
Valo. So no support for the time being.
http://lists.infradead.org/pipermail/ath10k/2014-March/001587.html
----
Chun-Yeow
On Tue, Apr 8, 2014 at 4:51 PM, wangdc <wangdc@dhc.com.cn> wrote:
> Hi,all
>
> I used the backports-3.13.2-1 to drive a 11ac card(WLE900VX) on the ubuntu
> 12.04 LTS(64bit) (3.8.0-35-generic).
> The card seemed to be working well when i connected it to a broadcom AC APs
> and the card could also send or receive data normally.
> But when using command 'iw dev wlan0 station dump' to check the actual Rx
> and Tx rate, i couldn't get the tx bitrate correctly.
>
> root@ubuntu:~$ iw dev wlan2 station dump
> Station 10:48:b1:e8:17:a6 (on wlan2)
> inactive time: 28680 ms
> rx bytes: 903704
> rx packets: 6747
> tx bytes: 20731
> tx packets: 163
> tx retries: 1969
> tx failed: 0
> signal: -36 dBm
> signal avg: -36 dBm
> tx bitrate: MCS 32 40Mhz short GI
> authorized: yes
> authenticated: yes
> preamble: long
> WMM/WME: yes
> MFP: no
> TDLS peer: no
>
> And sometimes the tx bitrate was 3693.3 MBit/s, 65.0 MBit/s, 6.5Mbit/s etc.
>
> The start log as following.
>
> root@ubuntu:~$ dmesg | grep ath
> [ 0.800424] MODSIGN: Loaded cert 'Magrathea: Glacier signing key:
> c77318d5b035f7cbfa665f640863f8bc32a3fa33'
> [ 10.539694] ath10k_pci 0000:04:00.0: BAR 0: assigned [mem
> 0xf0400000-0xf05fffff 64bit]
> [ 10.886386] ath10k: MSI-X didn't succeed (1), trying MSI
> [ 10.886454] ath10k_pci 0000:04:00.0: irq 44 for MSI/MSI-X
> [ 10.886492] ath10k: MSI interrupt handling
> [ 10.921722] ath10k: Hardware name qca988x hw2.0 version 0x4100016c
> [ 12.246510] ath10k: UART prints disabled
> [ 12.250960] ath10k: firmware 10.1.467.2-1 booted
> [ 12.260459] ath10k: htt target version 2.1
> [ 12.261559] ath: EEPROM regdomain: 0x0
> [ 12.261561] ath: EEPROM indicates default country code should be used
> [ 12.261562] ath: doing EEPROM country->regdmn map search
> [ 12.261563] ath: country maps to regdmn code: 0x3a
> [ 12.261565] ath: Country alpha2 being used: US
> [ 12.261566] ath: Regpair used: 0x3a
> [ 18.767377] ath10k: MSI-X didn't succeed (1), trying MSI
> [ 18.767451] ath10k_pci 0000:04:00.0: irq 44 for MSI/MSI-X
> [ 18.767496] ath10k: MSI interrupt handling
> [ 19.700523] ath10k: UART prints disabled
> [ 19.705037] ath10k: firmware 10.1.467.2-1 booted
> [ 19.714921] ath10k: htt target version 2.1
> ...
>
> root@ubuntu:~$ dmesg
> [ 121.846056] ------------[ cut here ]------------
> [ 121.846090] WARNING: at /home/backports/net/wireless/util.c:1066
> cfg80211_calculate_bitrate+0x18e/0x210 [cfg80211]()
> [ 121.846093] Hardware name: 23066RC
> [ 121.846094] Modules linked in: ip_vs(F) nf_conntrack(F) libcrc32c(F)
> bnep(F) rfcomm(F) parport_pc(F) ppdev(F) arc4(F) coretemp(F)
> snd_hda_codec_hdmi(F) snd_hda_codec_realtek(F) ath10k_pci(OF)
> ath10k_core(OF) uvcvideo(F) nfsd(F) snd_hda_intel(F) kvm(F) snd_hda_codec(F)
> ath(OF) videobuf2_core(F) nfs_acl(F) videodev(F) auth_rpcgss(F) i915(F)
> nfs(F) videobuf2_vmalloc(F) snd_hwdep(F) btusb(F) snd_pcm(F) mac80211(OF)
> videobuf2_memops(F) joydev(F) fscache(F) bluetooth(F) ghash_clmulni_intel(F)
> thinkpad_acpi(F) lockd(F) snd_seq_midi(F) cryptd(F) drm_kms_helper(F)
> binfmt_misc(F) snd_rawmidi(F) drm(F) snd_seq_midi_event(F) cfg80211(OF)
> sunrpc(F) snd_seq(F) psmouse(F) snd_timer(F) snd_seq_device(F) mei(F) snd(F)
> microcode(F) serio_raw(F) mac_hid(F) i2c_algo_bit(F) snd_page_alloc(F)
> compat(OF) soundcore(F) lpc_ich(F) nvram(F) wmi(F) video(F) lp(F) parport(F)
> sdhci_pci(F) sdhci(F) e1000e(F)
> [ 121.846157] Pid: 1050, comm: NetworkManager Tainted: GF O
> 3.8.0-35-generic #52~precise1-Ubuntu
> [ 121.846159] Call Trace:
> [ 121.846171] [<ffffffff81059b6f>] warn_slowpath_common+0x7f/0xc0
> [ 121.846177] [<ffffffff81059bca>] warn_slowpath_null+0x1a/0x20
> [ 121.846193] [<ffffffffa019c8de>] cfg80211_calculate_bitrate+0x18e/0x210
> [cfg80211]
> [ 121.846212] [<ffffffffa01a99a7>] nl80211_put_sta_rate+0x57/0x2a0
> [cfg80211]
> [ 121.846229] [<ffffffffa01ac0e1>]
> nl80211_send_station.isra.63+0x4a1/0x870 [cfg80211]
> [ 121.846246] [<ffffffffa01ac98c>] nl80211_get_station+0x22c/0x290
> [cfg80211]
> [ 121.846254] [<ffffffff8160f6dd>] genl_rcv_msg+0x22d/0x2b0
> [ 121.846260] [<ffffffff815d830b>] ? __alloc_skb+0x8b/0x2a0
> [ 121.846264] [<ffffffff8160f4b0>] ? genl_rcv+0x40/0x40
> [ 121.846270] [<ffffffff8160ee89>] netlink_rcv_skb+0xa9/0xd0
> [ 121.846274] [<ffffffff8160f495>] genl_rcv+0x25/0x40
> [ 121.846279] [<ffffffff8160e7d1>] netlink_unicast+0x1b1/0x230
> [ 121.846285] [<ffffffff8160eb4e>] netlink_sendmsg+0x2fe/0x3b0
> [ 121.846290] [<ffffffff815cb282>] sock_sendmsg+0xd2/0xf0
> [ 121.846296] [<ffffffff815cdb8a>] ? move_addr_to_kernel+0x5a/0xa0
> [ 121.846300] [<ffffffff815da406>] ? verify_iovec+0x56/0xd0
> [ 121.846305] [<ffffffff815cd09c>] ___sys_sendmsg+0x3ac/0x3c0
> [ 121.846311] [<ffffffff811aea86>] ? pollwake+0x66/0x70
> [ 121.846316] [<ffffffff81092050>] ? try_to_wake_up+0x200/0x200
> [ 121.846323] [<ffffffff816f53e5>] ? _raw_spin_lock_irq+0x15/0x20
> [ 121.846327] [<ffffffff81092050>] ? try_to_wake_up+0x200/0x200
> [ 121.846332] [<ffffffff815ceba9>] __sys_sendmsg+0x49/0x90
> [ 121.846337] [<ffffffff815cec09>] sys_sendmsg+0x19/0x20
> [ 121.846343] [<ffffffff816fdf5d>] system_call_fastpath+0x1a/0x1f
> [ 121.846346] ---[ end trace fc50900f4228222f ]---
>
> About the reason of the warning info above,
> when debugging the code, rate->flags was 0x0 and the rate->mcs value was
> more than 32 in the function of cfg80211_calculate_bitrate,
> but i didn't know why i got a wrong rate value.
>
> /home/backports/net/wireless/util.c
> u32 cfg80211_calculate_bitrate(struct rate_info *rate)
> {
> int modulation, streams, bitrate;
>
> if (!(rate->flags & RATE_INFO_FLAGS_MCS) &&
> !(rate->flags & RATE_INFO_FLAGS_VHT_MCS))
> return rate->legacy;
> if (rate->flags & RATE_INFO_FLAGS_60G)
> return cfg80211_calculate_bitrate_60g(rate);
> if (rate->flags & RATE_INFO_FLAGS_VHT_MCS)
> return cfg80211_calculate_bitrate_vht(rate);
>
> /* the formula below does only work for MCS values smaller than 32 */
> if (WARN_ON_ONCE(rate->mcs >= 32))
> return 0;
>
> I tried other version of the firmware and backports, the test results were
> as following:
> a)The problem repeated when i tried firmware-2.bin_999.999.0.636.
> b)The tx bitrate was fixed to 6MBit/s and there was no warning info in the
> boot log when i adopted the latest development
> releases(backports-20140221).
>
> Is there anybody meets the same problem? If so, please give me some
> suggestion on getting Tx rate properly.
>
> Thanks.
> Rex
>
>
> _______________________________________________
> ath10k mailing list
> ath10k@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/ath10k
_______________________________________________
ath10k mailing list
ath10k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath10k
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: For Help: problems with tx bitrate in ath10k
2014-04-09 3:11 ` Yeoh Chun-Yeow
@ 2014-04-09 11:11 ` Kalle Valo
0 siblings, 0 replies; 3+ messages in thread
From: Kalle Valo @ 2014-04-09 11:11 UTC (permalink / raw)
To: Yeoh Chun-Yeow; +Cc: wangdc, ath10k@lists.infradead.org
Yeoh Chun-Yeow <yeohchunyeow@gmail.com> writes:
> Need firmware change to get proper Tx rate as pointed out by Kalle
> Valo. So no support for the time being.
>
> http://lists.infradead.org/pipermail/ath10k/2014-March/001587.html
That's right. I added this question also to the FAQ:
http://wireless.kernel.org/en/users/Drivers/ath10k/faq#Why_the_TX_rate_reported_to_user_space_is_wrong.3F
Is there any way to report to user space that TX rate reports are not
supported? If not, it would be great if someone would have time to add
that to cfg80211/mac80211. This issue is confusing a lot of people.
--
Kalle Valo
_______________________________________________
ath10k mailing list
ath10k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath10k
^ permalink raw reply [flat|nested] 3+ messages in thread
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2014-04-08 8:51 For Help: problems with tx bitrate in ath10k wangdc
2014-04-09 3:11 ` Yeoh Chun-Yeow
2014-04-09 11:11 ` Kalle Valo
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