Problem with uapsd

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Hello;

My name is Francisco C=E1rdenas, I am a Telecommunication engineer in the
Seville University. I am working in a proyect about energy efficiency with
Madwifi.

I am working with two cards Dlink G520 with chip atheros AR5001X+. One card
is in mode AP and the other is in mode STA.

In Madwifi=B4s code i can see references to UAPSD. I need this mode to save
energy. Therefore, i do this in my console (in STA):

sudo iwpriv ath0 uapsd 1

Then, I run a C program to send packets each 500000 usec. But the packets
are not sent. I dont know why. (The packets are sent if uapsd is disabled).

To make sure i puts some printf in the code about uapsd y this is the
output:

Apr  2 16:55:28 francisco-P5KR kernel: [  230.108019]
WME_UAPSD_AC_CAN_TRIGGER??
Apr  2 16:55:28 francisco-P5KR kernel: [  230.108021]
Apr  2 16:55:28 francisco-P5KR kernel: [  230.108021] ieee80211_pwrsave
Apr  2 16:55:29 francisco-P5KR kernel: [  231.608013]
Apr  2 16:55:29 francisco-P5KR kernel: [  231.608015] ieee80211_hardstart
Apr  2 16:55:29 francisco-P5KR kernel: [  231.608019]
Apr  2 16:55:29 francisco-P5KR kernel: [  231.608019]
WME_UAPSD_AC_CAN_TRIGGER??
Apr  2 16:55:29 francisco-P5KR kernel: [  231.608021]
Apr  2 16:55:29 francisco-P5KR kernel: [  231.608022] ieee80211_pwrsave
Apr  2 16:55:30 francisco-P5KR kernel: [  232.608013]
Apr  2 16:55:30 francisco-P5KR kernel: [  232.608016] ieee80211_hardstart

Can anyone help me?

Thank you very much
--=20
Francisco C=E1rdenas

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Hello;<br><br>My name is Francisco C=E1rdenas, I am a Telecommunication eng=
ineer in the Seville University. I am working in a proyect about energy eff=
iciency with Madwifi.<br><br>I am working with two cards Dlink G520 with ch=
ip atheros AR5001X+. One card is in mode AP and the other is in mode STA. <=
br>

<br>In Madwifi=B4s code i can see <span id=3D"result_box" class=3D"short_te=
xt" lang=3D"en"><span class=3D"hps">references to</span> <span class=3D"hps=
">UAPSD</span></span>. I need this mode to save energy. Therefore, i do thi=
s in my console (in STA):<br>

<br>sudo iwpriv ath0 uapsd 1<br><br>Then, I run a C program to send packets=
 each 500000 usec. But the packets are not sent. I dont know why. (The pack=
ets are sent if uapsd is disabled).<br><br>To make sure i puts some printf =
in the code about uapsd y this is the output:<br>

<br>Apr=A0 2 16:55:28 francisco-P5KR kernel: [=A0 230.108019] WME_UAPSD_AC_=
CAN_TRIGGER??<br>Apr=A0 2 16:55:28 francisco-P5KR kernel: [=A0 230.108021] =
<br>Apr=A0 2 16:55:28 francisco-P5KR kernel: [=A0 230.108021] ieee80211_pwr=
save<br>

Apr=A0 2 16:55:29 francisco-P5KR kernel: [=A0 231.608013] <br>Apr=A0 2 16:5=
5:29 francisco-P5KR kernel: [=A0 231.608015] ieee80211_hardstart<br>Apr=A0 =
2 16:55:29 francisco-P5KR kernel: [=A0 231.608019] <br>Apr=A0 2 16:55:29 fr=
ancisco-P5KR kernel: [=A0 231.608019] WME_UAPSD_AC_CAN_TRIGGER??<br>

Apr=A0 2 16:55:29 francisco-P5KR kernel: [=A0 231.608021] <br>Apr=A0 2 16:5=
5:29 francisco-P5KR kernel: [=A0 231.608022] ieee80211_pwrsave<br>Apr=A0 2 =
16:55:30 francisco-P5KR kernel: [=A0 232.608013] <br>Apr=A0 2 16:55:30 fran=
cisco-P5KR kernel: [=A0 232.608016] ieee80211_hardstart<br>

<br clear=3D"all"><span id=3D"result_box" class=3D"short_text" lang=3D"en">=
<span class=3D"hps">Can anyone help me?<br><br>Thank you very much<br></spa=
n></span>-- <br>Francisco C=E1rdenas<br>

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