Date: Sun, 2 Nov 2014 09:46:05 +0100 From: Matthias Apitz <guru@unixarea.de> To: Adrian Chadd <adrian@freebsd.org>, freebsd-wireless@freebsd.org, Nathan Whitehorn <nwhitehorn@freebsd.org> Subject: Re: Issues with urtwn Message-ID: <20141102084605.GA60031@unixarea.DDR.dd> In-Reply-To: <20141101081736.GA2857@unixarea.DDR.dd> References: <540C751F.6050202@freebsd.org> <CAJ-VmokyPcS077wHiP4Mdetms=meqk47v29fKA1edidhorVQpg@mail.gmail.com> <540C92D6.4030106@freebsd.org> <CAJ-VmomMwJOSz7hyAfeEgPE=qBfYm7fTOo5km8JJk4g62JxTkg@mail.gmail.com> <540CC53A.90600@freebsd.org> <CAJ-Vmokt_kgxW3aPEDcNwg_ZVrCotqF_tOP1YjZCtO=nCZ8z5Q@mail.gmail.com> <540E2A2D.4090301@freebsd.org> <CAJ-VmongioOZQS561Qq5S1T0UVnBifxrQf8P0rr8jEWzk=dumQ@mail.gmail.com> <20141026073605.GA1819@unixarea.DDR.dd> <20141101081736.GA2857@unixarea.DDR.dd>
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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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