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why iwconfig shows no N mode ???
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brain salad surgery
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PostPosted: Mon Aug 27, 2012 10:07 pm    Post subject: why iwconfig shows no N mode ??? Reply with quote

lspci

Quote:

02:00.0 Network controller: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller (rev 01)
Subsystem: Hewlett-Packard Company Device 145c
Flags: bus master, fast devsel, latency 0, IRQ 17
Memory at b2400000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [40] Power Management version 3
Capabilities: [58] Vendor Specific Information: Len=78 <?>
Capabilities: [48] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [d0] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [13c] Virtual Channel
Capabilities: [160] Device Serial Number 00-00-82-ff-ff-81-00-26
Capabilities: [16c] Power Budgeting <?>
Kernel driver in use: wl
Kernel modules: wl


iwconfig

Quote:

eth1 IEEE 802.11abg ESSID:"yo"
Mode:Managed Frequency:2.437 GHz Access Point: 94:44:52:91:52:78
Tx-Power=200 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off


uname -a

Quote:

3.3.8-gentoo


emerge broadcom-sta

Quote:

[ebuild R ] net-wireless/broadcom-sta-5.100.82.112-r2 0 kB

and while building the module, it doesn't complain about anything... and this driver version is supposed to support n devices...

However, i am wondering as I actually connect to a N-only network, but cannot achieve very good
transfer rates...

Does anybody knows why iwconfig shows only abg ? and not n ?
so how to tell if something's wrong ?

what other driver could I use ?
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MustrumR
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PostPosted: Tue Aug 28, 2012 8:15 am    Post subject: Reply with quote

I'm using brcmsmac (CONFIG_BRCMSMAC) on my BCM43225 and it's in IEEE 802.11bgn mode. The driver should also support BCM4313.

However at the time of writing this there is only managed mode and monitor mode support. No ad-hoc mode and no master mode.
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mbar
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PostPosted: Tue Aug 28, 2012 11:11 am    Post subject: Reply with quote

WPA is required for N speeds.
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brain salad surgery
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PostPosted: Tue Aug 28, 2012 11:46 am    Post subject: Reply with quote

I know that, using WPA2 and AES

However it does not explain why it can connect to my router in N-only mode, and I still cannot say what mode it's using.

Otherwise the poor transfer rates, the wl driver is working as it should, no problem.

Will give a try to brcm80211.
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mbar
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PostPosted: Wed Aug 29, 2012 5:54 am    Post subject: Reply with quote

This is on my laptop:

Code:
eth1      IEEE 802.11abg  ESSID:"Mareck-2G"
          Mode:Managed  Frequency:2.462 GHz  Access Point: E0:46:9A:4E:94:5E
          Bit Rate=130 Mb/s   Tx-Power=200 dBm
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality=70/70  Signal level=-28 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0


130 Mb/s is a N mode. I know it's low, but I also have Ethernet connected at the moment and WiFi is idling. I'm using Netgear 3700 V2 as a home router with OpenWrt of course ;)

Code:
08:00.0 Network controller: Broadcom Corporation BCM43224 802.11a/b/g/n (rev 01)


Code:
lsmod
Module                  Size  Used by
vboxnetadp             25078  0
vboxnetflt             22077  0
vboxdrv               209727  2 vboxnetadp,vboxnetflt
lib80211_crypt_tkip    17230  0
wl                   2545271  0
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brain salad surgery
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PostPosted: Mon Sep 03, 2012 9:51 pm    Post subject: Reply with quote

ok, cannot get much more than 73 Mbit/s using brcmsmac either...
but at least iwconfig is showing a bgn network card !

so am i stuck with those poor rates ??? not even enough to stream video !!!
and using windows, of course, the bitrate is as it should.

any broadcom-sta tweak ? or brcmsmac ?
i cannot believe a 2-3 years old nic cannot be more supported than that ! even with proprietary drivers
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mbar
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PostPosted: Tue Sep 04, 2012 7:06 am    Post subject: Reply with quote

Maybe it only supports single spatial stream?

http://h30434.www3.hp.com/t5/Wireless-Internet-Home/Latest-Broadcom-WLAN-Driver-Improves-BCM-4313-Connection-Issues/td-p/819671
http://www.techsupportforum.com/forums/f31/my-wifi-cant-get-more-then-72mbps-578545.html
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brain salad surgery
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PostPosted: Tue Sep 04, 2012 12:36 pm    Post subject: Reply with quote

you're actually right...

I'll give a try again at the broadcom-sta wl driver...
I'll also try downgrading my kernel to something like 2.6.33 or so.
Maybe this old driver works better with older kernels and cfg80211 api ???
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