[ath9k-devel] tx99 memory allocate failure

Solved!

Thanks a bunch!!!

Kr
Mathieu

On Tue, May 17, 2016 at 4:16 PM, Eduardo Abinader <
[email protected]> wrote:

> Hi Mathieu,
>
> Add the monitor interface like this:
>
> #iw phy phy0 interface add moni0 type monitor flags active
>
>
> BR,
> Eduardo Abinader
> ------------------------------
> *From:* Mathieu Slabbinck [matty.slabbinck at gmail.com]
> *Sent:* Tuesday, May 17, 2016 4:11 PM
> *To:* Eduardo Abinader
> *Cc:* ath9k-devel at lists.ath9k.org
> *Subject:* Re: [ath9k-devel] tx99 memory allocate failure
>
> Hi Eduardo,
>
> I'm using this:
> #!/bin/bash
> mount -t debugfs nodev /sys/kernel/debug
>
> echo "Prep for tx99"
> iw phy phy0 interface add moni0 type monitor
> ip link set dev moni0 up
>
> echo "Activating tx99"
> echo 15 > /sys/kernel/debug/ieee80211/phy0/ath9k/tx99_power
> echo 1 > /sys/kernel/debug/ieee80211/phy0/ath9k/tx99
>
> Is that not enough?
> Ifconfig lists moni0 as follows:
> moni0     Link encap:UNSPEC  HWaddr
> BC-30-7E-BC-59-98-35-65-00-00-00-00-00-00-00-00
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000
>           RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B
>
> Kr
>
> On Tue, May 17, 2016 at 4:07 PM, Eduardo Abinader <
> Eduardo.Abinader at riverbed.com> wrote:
>
>> Hi,
>>
>> Create the monitor interface with active flag set.
>>
>> BR.
>> ------------------------------
>> *From:* ath9k-devel-bounces at lists.ath9k.org [
>> ath9k-devel-bounces at lists.ath9k.org] on behalf of Mathieu Slabbinck [
>> matty.slabbinck at gmail.com]
>> *Sent:* Tuesday, May 17, 2016 3:52 PM
>> *To:* ath9k-devel at lists.ath9k.org
>> *Subject:* [ath9k-devel] tx99 memory allocate failure
>>
>> Hi,
>>
>> I'm having some issues running the tx99 features of the ath9k driver.
>> Seems like every time I try to run it, I get this:
>> sh: write error: cannot allocate memory.
>>
>> After some poking, I found it's returning -ENOMEN in tx99.c.
>> Which is due to !sc-tx99_skb
>> Which on it's turn is due to an empty value for sc->tx99_vif.
>>
>> So essentially, it's going wrong in ath9k_build_tx99_skb and returns NULL
>> when checking:
>> if (!sc->tx99_vif) {
>>     return NULL;
>> }
>>
>> Anybody some ideas on what the actual root cause can be of this and/or
>> how to solve it?
>>
>> Kernel version: 4.1.0
>>
>> Thanks & Kr
>>
>> Mathieu
>>
>
>
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