Re: Re: [PATCH] mwifiex: fixes the trivial print
Hi Caesar,
It proved to be a feature to get better scan result from overlapping channel,
introduced in
commit 1b499cb72f26bbf44f2fa158c2d1487730aae96a
Author: Amitkumar Karwar <akar...@marvell.com>
Date: Sun Apr 24 23:49:51 2016 -0700
mwifiex: disable channel filtering feature in firmware
As 2.4Ghz channels are overlapping, sometimes AP responds to
probe request even if it's operating on neighbouring channel.
Currently firmware drops those scan entries, as current channel
doesn't match with APs channel.
This patch enables MWIFIEX_DISABLE_CHAN_FILT flag in scan
command to disable the feature so that better scan results
will be received in 2.4Ghz band.
As I can see, even there could be AP from overlapping channel (might be
12/13/14 in this case), it will be filtered depend on reg domain rules
if (ch->flags & IEEE80211_CHAN_DISABLED)
continue;
so it should not been an ERROR. WARN looks fine to me.
you can add me acked-by in v2.
Regards,
Simon
From: Caesar Wang [mailto:w...@rock-chips.com]
Sent: 2017年6月13日 18:52
To: Xinming Hu; Kalle Valo; Zhiyuan Yang; Cathy Luo
Cc: amitkar...@gmail.com; Nishant Sarmukadam; Ganapathi Bhat;
linux-wirel...@vger.kernel.org; netdev@vger.kernel.org;
linux-ker...@vger.kernel.org; briannor...@chromium.org;
jeffy.c...@rock-chips.com; Ganapathi Bhat
Subject: [EXT] Re: [PATCH] mwifiex: fixes the trivial print
External Email
Hi Xinming,
As issue tracked on
https://partnerissuetracker.corp.google.com/u/2/issues/62122843
在 2017年06月13日 17:51, Xinming Hu 写道:
Hi Caesar,
The original log in google issue tracker show there exist AP in channel 13
after periodically scan.
Per my understand, if reg domain is set to US, channel 12/13/14 will not get
chance to scan. (test using iw/wpa_supplicant).
I am curious about whether there are any diff from upper layer.
As a test, you can print the scan channel list, as below:
diff --git a/drivers/net/wireless/marvell/mwifiex/cfg80211.c
b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
index a7593aa..a289818 100644
--- a/drivers/net/wireless/marvell/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
@@ -2572,6 +2572,7 @@ static int mwifiex_set_ibss_params(struct mwifiex_private
*priv,
MWIFIEX_USER_SCAN_CHAN_MAX); i++) {
chan = request->channels[i];
user_scan_cfg->chan_list[i].chan_number = chan->hw_value;
+ pr_err("chan->hw_value = %d", chan->hw_value);
user_scan_cfg->chan_list[i].radio_type = chan->band;
if ((chan->flags & IEEE80211_CHAN_NO_IR) || !request->n_ssids)
The below as the required log:
localhost / # [ 46.760997] mwifiex: chan->hw_value = 1
[ 46.764878] mwifiex: chan->hw_value = 2
[ 46.768765] mwifiex: chan->hw_value = 3
[ 46.772625] mwifiex: chan->hw_value = 4
[ 46.776608] mwifiex: chan->hw_value = 5
[ 46.780485] mwifiex: chan->hw_value = 6
[ 46.784384] mwifiex: chan->hw_value = 7
[ 46.788252] mwifiex: chan->hw_value = 8
[ 46.792185] mwifiex: chan->hw_value = 9
[ 46.796036] mwifiex: chan->hw_value = 10
[ 46.799978] mwifiex: chan->hw_value = 11
[ 46.803908] mwifiex: chan->hw_value = 38
[ 46.807847] mwifiex: chan->hw_value = 42
[ 46.811786] mwifiex: chan->hw_value = 46
[ 46.815722] mwifiex: chan->hw_value = 36
[ 46.819646] mwifiex: chan->hw_value = 40
[ 46.823577] mwifiex: chan->hw_value = 44
[ 46.827503] mwifiex: chan->hw_value = 48
[ 46.831440] mwifiex: chan->hw_value = 52
[ 46.835363] mwifiex: chan->hw_value = 56
[ 46.839287] mwifiex: chan->hw_value = 60
[ 46.843205] mwifiex: chan->hw_value = 64
[ 46.847129] mwifiex: chan->hw_value = 100
[ 46.851134] mwifiex: chan->hw_value = 104
[ 46.855150] mwifiex: chan->hw_value = 108
[ 46.859155] mwifiex: chan->hw_value = 112
[ 46.863168] mwifiex: chan->hw_value = 116
[ 46.867175] mwifiex: chan->hw_value = 120
[ 46.871186] mwifiex: chan->hw_value = 124
[ 46.875196] mwifiex: chan->hw_value = 128
[ 46.879208] mwifiex: chan->hw_value = 132
[ 46.883214] mwifiex: chan->hw_value = 136
[ 46.887224] mwifiex: chan->hw_value = 140
[ 46.891230] mwifiex: chan->hw_value = 149
[ 46.895241] mwifiex: chan->hw_value = 153
[ 46.899246] mwifiex: chan->hw_value = 157
[ 46.903256] mwifiex: chan->hw_value = 161
[ 46.907262] mwifiex: chan->hw_value = 165
[ 47.394176] mwifiex_pcie :01:00.0: mwifiex_get_cfp: cannot find cfp by
band 2 & channel=12 freq=0
-Caesar
Regards,
Simon
-Original Message-
From: Kalle Valo [mailto:kv...@codeaurora.org]
Sent: 2017年6月13日 15:53
To: Caesar Wang
Cc: amitkar...@gmail.com; Xinming Hu; Nishant Sarmukadam; Ganapathi
Bhat; linux-wirel...@vger.kernel.org; netdev@vg
Re: Re: [PATCH] mwifiex: fixes the trivial print
Hi Caesar,
The original log in google issue tracker show there exist AP in channel 13
after periodically scan.
Per my understand, if reg domain is set to US, channel 12/13/14 will not get
chance to scan. (test using iw/wpa_supplicant).
I am curious about whether there are any diff from upper layer.
As a test, you can print the scan channel list, as below:
diff --git a/drivers/net/wireless/marvell/mwifiex/cfg80211.c
b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
index a7593aa..a289818 100644
--- a/drivers/net/wireless/marvell/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
@@ -2572,6 +2572,7 @@ static int mwifiex_set_ibss_params(struct mwifiex_private
*priv,
MWIFIEX_USER_SCAN_CHAN_MAX); i++) {
chan = request->channels[i];
user_scan_cfg->chan_list[i].chan_number = chan->hw_value;
+ pr_err("chan->hw_value = %d", chan->hw_value);
user_scan_cfg->chan_list[i].radio_type = chan->band;
if ((chan->flags & IEEE80211_CHAN_NO_IR) || !request->n_ssids)
Regards,
Simon
> -Original Message-
> From: Kalle Valo [mailto:kv...@codeaurora.org]
> Sent: 2017年6月13日 15:53
> To: Caesar Wang
> Cc: amitkar...@gmail.com; Xinming Hu; Nishant Sarmukadam; Ganapathi
> Bhat; linux-wirel...@vger.kernel.org; netdev@vger.kernel.org;
> linux-ker...@vger.kernel.org; briannor...@chromium.org;
> jeffy.c...@rock-chips.com
> Subject: [EXT] Re: [PATCH] mwifiex: fixes the trivial print
>
> External Email
>
> --
> Caesar Wang <w...@rock-chips.com> writes:
>
> > 在 2017年06月13日 15:04, Kalle Valo 写道:
> >> Caesar Wang <w...@rock-chips.com> writes:
> >>
> >>> Kalle,
> >>>
> >>> 在 2017年06月13日 14:28, Kalle Valo 写道:
> >>>> Caesar Wang <w...@rock-chips.com> writes:
> >>>>
> >>>>> We have always met the unused log be printed as following.
> >>>>>
> >>>>> ...
> >>>>> [23193.523182] mwifiex_pcie :01:00.0: mwifiex_get_cfp:
> >>>>> cannot find cfp by band 2& channel=13 freq=0
> >>>>> [23378.633684] mwifiex_pcie :01:00.0: mwifiex_get_cfp:
> >>>>> cannot find cfp by band 2& channel=13 freq=0
> >>>>>
> >>>>> Maybe that's related to wifi regdom, since wifi default area was
> >>>>> US and didn't support 12~14 channels.
> >>>>>
> >>>>> As Frequencies:
> >>>>> * 2412 MHz [1] (30.0 dBm)
> >>>>> * 2417 MHz [2] (30.0 dBm)
> >>>>> * 2422 MHz [3] (30.0 dBm)
> >>>>> * 2427 MHz [4] (30.0 dBm)
> >>>>> * 2432 MHz [5] (30.0 dBm)
> >>>>> * 2437 MHz [6] (30.0 dBm)
> >>>>> * 2442 MHz [7] (30.0 dBm)
> >>>>> * 2447 MHz [8] (30.0 dBm)
> >>>>> * 2452 MHz [9] (30.0 dBm)
> >>>>> * 2457 MHz [10] (30.0 dBm)
> >>>>> * 2462 MHz [11] (30.0 dBm)
> >>>>> * 2467 MHz [12] (disabled)
> >>>>> * 2472 MHz [13] (disabled)
> >>>>> * 2484 MHz [14] (disabled)
> >>>>>
> >>>>> Signed-off-by: Caesar Wang <w...@rock-chips.com>
> >>>>> ---
> >>>>>
> >>>>>drivers/net/wireless/marvell/mwifiex/cfp.c | 2 +-
> >>>>>1 file changed, 1 insertion(+), 1 deletion(-)
> >>>>>
> >>>>> diff --git a/drivers/net/wireless/marvell/mwifiex/cfp.c
> >>>>> b/drivers/net/wireless/marvell/mwifiex/cfp.c
> >>>>> index 1ff2205..6e29943 100644
> >>>>> --- a/drivers/net/wireless/marvell/mwifiex/cfp.c
> >>>>> +++ b/drivers/net/wireless/marvell/mwifiex/cfp.c
> >>>>> @@ -350,7 +350,7 @@ mwifiex_get_cfp(struct mwifiex_private *priv, u8
> band, u16 channel, u32 freq)
> >>>>> }
> >>>>> }
> >>>>> if (i == sband->n_channels) {
> >>>>> - mwifiex_dbg(priv->adapter, ERROR,
> >>>>> + mwifiex_dbg(priv->adapter, WARN,
> >>>>> "%s: cannot find cfp by band %d\t"
> >>>>> "& channel=%d freq=%d\n",
> >>>>> __func__, band, channel, freq);
> >>>> I don't see how this fixes any
