Re: [Madwifi-devel] cannot set cwmin, cwmax, aifs, txoplimit
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Re: [Madwifi-devel] cannot set cwmin, cwmax, aifs, txoplimit
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From: Nikos M. <nim...@gm...> - 2010-06-04 13:42:55
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try to locate where in hal the ath_hal_settxqueueprops function is
called. (In my trunk version it's under the name of ath_hal_setTxQProps
in file ah.c) You can find there some interesting information about the
limits and do some printing in order to check what values are finally set.
Nikos
στις 4/6/2010 12:07 μμ, O/H Vishal Sevani έγραψε:
> nope still not working .. i tried calling ath_txq_update() in
> ath_tx_startraw which is called everytime i send a packet. i even
> tried changing burst time, but still not working. (btw i forgot to
> mention earlier, iam interested in setting aifs as i want to control
> the interpacket between successive pkt transmissions). here is my
> modified, ath_txq_update()
>
> static int
> ath_txq_update(struct ath_softc *sc, struct ath_txq *txq, int ac)
> {
> #define ATH_EXPONENT_TO_VALUE(v) ((1<<v)-1)
> #define ATH_TXOP_TO_US(v) (v<<5)
> struct ieee80211com *ic = &sc->sc_ic;
> struct wmeParams *wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac];
> struct ath_hal *ah = sc->sc_ah;
> HAL_TXQ_INFO qi;
>
> ath_hal_gettxqueueprops(ah, txq->axq_qnum, &qi);
> //qi.tqi_aifs = wmep->wmep_aifsn;
> //vs change
> qi.tqi_aifs = 10;
> //printk("aifs %d\n",wmep->wmep_aifsn);
> //qi.tqi_cwmin = ATH_EXPONENT_TO_VALUE(wmep->wmep_logcwmin);
> //my change
> qi.tqi_cwmin = 1;
> //printk("cwmin %d\n",qi.tqi_cwmin);
> //qi.tqi_cwmax = ATH_EXPONENT_TO_VALUE(wmep->wmep_logcwmax);
> //my change
> qi.tqi_cwmax = 1;
> //printk("cwmax %d\n",qi.tqi_cwmax);
> //qi.tqi_burstTime = ATH_TXOP_TO_US(wmep->wmep_txopLimit);
> qi.tqi_burstTime = 10000;
>
> if (!ath_hal_settxqueueprops(ah, txq->axq_qnum, &qi)) {
> EPRINTF(sc, "Unable to update hardware queue "
> "parameters for %s traffic!\n",
> ieee80211_wme_acnames[ac]);
> return 0;
> } else {
> ath_hal_resettxqueue(ah, txq->axq_qnum); /* push to h/w */
> //printk("set queue props\n");
> return 1;
> }
> #undef ATH_TXOP_TO_US
> #undef ATH_EXPONENT_TO_VALUE
> }
>
> Though here I have kept the value of cwmin and cwmax to 1, i also
> tried with other values with same result.
>
> thanks
> vishal
>
> 2010/6/3 Nikos Makris <nim...@gm... <mailto:nim...@gm...>>
>
> the limits are defined in HAL. Try calling ath_txq_update
> everytime you have a packet to send. It works fine for me in AP
> and STA mode.
>
> Nikos
>
> στις 3/6/2010 2:50 μμ, O/H Vishal Sevani έγραψε:
>>
>>
>> On Thu, Jun 3, 2010 at 2:27 PM, Nikos Makris <nim...@gm...
>> <mailto:nim...@gm...>> wrote:
>>
>> try using ath_txq_update function with the appropriate queue
>> for argument (Most cases WME_AC_BE). Remember cannot set
>> cwmin lower than 15 and cwmax over 1023.
>>
>> Yeah I have modified both the functions, ath_txq_setup as well
>> ath_txq_update for all the queues, but still it is not working.
>> Could it be becasue Iam operating in monitor mode?? Also where is
>> limit of 15 and 1023 defined for cwmin and cwmax?? is it in HAL??
>>
>> Thanks
>> vishal
>>
>>
>> στις 3/6/2010 10:40 πμ, O/H Vishal Sevani έγραψε:
>>> iam operating in monitor and i tried setting aifs, cwmin and
>>> cwmax via ath_txq_setup() function, but it not working for me :(
>>>
>>> vishal
>>>
>>> On Thu, Jun 3, 2010 at 1:53 AM, Mohammad Abdelhadi
>>> <mo....@gm... <mailto:mo....@gm...>> wrote:
>>>
>>>
>>>
>>>
>>>
>>> On Wed, Jun 2, 2010 at 8:58 PM, nathan
>>> <nit...@ya... <mailto:nit...@ya...>> wrote:
>>>
>>> Hi,
>>> I am running madwifi 0.9.4. The radio is configured
>>> as an AP.
>>> I tried to set the above iwpriv parameters for
>>> access class BE, and it accepts the cmd but does NOT
>>> change the values.
>>>
>>> I did google a search, and found out that I am not
>>> the only one. I could not find any fix or explnation
>>> as to why it's not working....
>>>
>>> any help will be appreciated,
>>> nathan.
>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>>
>>> _______________________________________________
>>> Madwifi-devel mailing list
>>> Mad...@li...
>>> <mailto:Mad...@li...>
>>> https://lists.sourceforge.net/lists/listinfo/madwifi-devel
>>>
>>>
>>>
>>> Hi,
>>>
>>> Yes, i also tried iwpriv and it didn't work. Try to
>>> configure them internally from the driver itself, see
>>> ( static struct ath_txq *
>>> ath_txq_setup) in if_ath.c, and you will find parameters
>>> such as (qi.tqi_aifs) and others....try to modify them
>>> as desired.
>>>
>>> Hope this helps.
>>>
>>> Regards,
>>> --
>>> Mohammad Abdelhadi
>>> ----------------------------------------------------------------------------
>>> Communications Engineering-Senior Student
>>> Princess Sumaya University for Technology
>>> Amman, Jordan
>>> Mobile: +962777030924
>>> Email: moh...@ie... <mailto:moh...@ie...> \
>>> mo....@gm... <mailto:mo....@gm...>
>>>
>>>
>>>
>>>
>>>
>>>
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>>
>>
>> ------------------------------------------------------------------------------
>> ThinkGeek and WIRED's GeekDad team up for the Ultimate
>> GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the
>> lucky parental unit. See the prize list and enter to win:
>> http://p.sf.net/sfu/thinkgeek-promo
>> _______________________________________________
>> Madwifi-devel mailing list
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>>
>>
>
>
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