Issues with urtwn

[Matthias Apitz]

Hi,

I do not understand why I have these 'powersave on/off' transitions:

Nov  2 09:01:06 unixarea kernel: wlan0: [00:13:f7:0d:08:48] sta power save mode on
Nov  2 09:01:08 unixarea kernel: wlan0: [00:13:f7:0d:08:48] sta power save mode off
Nov  2 09:06:08 unixarea kernel: wlan0: [00:13:f7:0d:08:48] sta power save mode on
Nov  2 09:06:10 unixarea kernel: wlan0: [00:13:f7:0d:08:48] sta power save mode off
Nov  2 09:11:11 unixarea kernel: wlan0: [00:13:f7:0d:08:48] sta power save mode on
Nov  2 09:11:12 unixarea kernel: wlan0: [00:13:f7:0d:08:48] sta power save mode off

# ifconfig wlan0 -powersave
# ifconfig -v wlan0 | fgrep power
        AES-CCM 3:128-bit powersavemode OFF powersavesleep 100 txpower 0

i.e. it seems to be OFF, I even can not set it to on:

# ifconfig wlan0 powersave
ifconfig: SIOCS80211: Operation not supported

What I do can set is the powersavesleep interval to zero:

# ifconfig wlan0 powersavesleep 0
# ifconfig -v wlan0 | fgrep power
        AES-CCM 3:128-bit powersavemode OFF powersavesleep 0 txpower 0

But this does not help either.

I fgrep'ed throu the src/sys and it seems that the power save mode
on/off message comes out from

/usr/src/sys/net80211/ieee80211_power.c

/*
 * Handle power-save state change in station mode.
 */
void
ieee80211_sta_pwrsave(struct ieee80211vap *vap, int enable)
{
        struct ieee80211_node *ni = vap->iv_bss;
 
        if (!((enable != 0) ^ ((ni->ni_flags & IEEE80211_NODE_PWR_MGT) != 0)))
                return;
 
        IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni,
            "sta power save mode %s", enable ? "on" : "off");

but this does not answer the question why is switching it on/off.

Is it worth to compile a hard change an let return
ieee80211_sta_pwrsave() without doing anything?

Any ideas?

	matthias

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