On 10/15/2010 05:35 AM, mickael.mas...@orange-ftgroup.com wrote:
Hi Mohammed, Hi all,
We tried with the latest compat-wireless tree (as explained in
http://wireless.kernel.org/en/users/Download/hacking#Git_trees_you_will_need)
and we got same results with the command:
$ cat /proc/net/wireless
Inter-| sta-| Quality | Discarded packets | Missed | WE
face | tus | link level noise | nwid crypt frag retry misc | beacon |
22
wlan1: 0000 30. -80. -256 0 0 0 14 18 0
wlan2: 0000 0 0 0 0 0 0 0 0 0
mon.wlan2: 0000 0 0 0 0 0 0 0 0 0
Noise is always equal to -256.
We knew that API changed when<iw> tool was released (and
consequently<wireless-tool> was deprecated) but we thougth that read
/proc/net/wireless would still provide reliable information. It seems that we were wrong!
I'm attaching patches to make this work, but the maintainers are not interested
in these
patches upstream last I checked, so you'll have to apply them yourself.
The status/flags part of the patch is a real hack (exposes internal flags field
with
no translation), but it can show you if the interfaces are scanning or not, etc.
This patch also shows current rate as a new field in /proc/net/wireless.
Please let me know if you have any questions.
Thanks,
Ben
--
Ben Greear <gree...@candelatech.com>
Candela Technologies Inc http://www.candelatech.com
>From e622b8b63b0323057b5d72b1fb068c3c4b699427 Mon Sep 17 00:00:00 2001
From: Ben Greear <gree...@candelatech.com>
Date: Fri, 8 Oct 2010 08:05:27 -0700
Subject: [PATCH 1/3] wext: Add noise, flags, and rate to /proc/net/wireless
This seems unlikely to ever go upstream. The noise probing
code may not work for all drivers, the flags are a copy of
internal data, and rate is a new field in /proc/net/wireless
which might confuse something.
Signed-off-by: Ben Greear <gree...@candelatech.com>
---
:100644 100644 4395b28... e538c2d... M include/linux/wireless.h
:100644 100644 6187c2e... 6e48883... M include/net/cfg80211.h
:100644 100644 18bd0e5... 1c01f8f... M net/mac80211/cfg.c
:100644 100644 12222ee... b78ddfc... M net/wireless/wext-compat.c
:100644 100644 8bafa31... 9ccc338... M net/wireless/wext-proc.c
include/linux/wireless.h | 5 +++--
include/net/cfg80211.h | 7 ++++++-
net/mac80211/cfg.c | 8 ++++++++
net/wireless/wext-compat.c | 3 +++
net/wireless/wext-proc.c | 8 +++++---
5 files changed, 25 insertions(+), 6 deletions(-)
diff --git a/include/linux/wireless.h b/include/linux/wireless.h
index 4395b28..e538c2d 100644
--- a/include/linux/wireless.h
+++ b/include/linux/wireless.h
@@ -898,8 +898,9 @@ struct iw_pmkid_cand
*/
struct iw_statistics
{
- __u16 status; /* Status
- * - device dependent for now */
+ __u16 status; /* Status: ieee80211_sta_info_flags
+ * plus: (1<<15): Scanning */
+ __u16 txrate; /* Current rate, in 100Kbps units. */
struct iw_quality qual; /* Quality of the link
* (instant/mean/max) */
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 6187c2e..6e48883 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -485,6 +485,8 @@ struct rate_info {
* @plid: mesh peer link id
* @plink_state: mesh peer link state
* @signal: signal strength of last received packet in dBm
+ * @status: ieee80211_sta_info_flags plus: (1<<15) Scanning.
+ * @noise: noise, as obtained from dump_survey of index 0.
* @txrate: current unicast bitrate to this station
* @rx_packets: packets received from this station
* @tx_packets: packets transmitted to this station
@@ -505,7 +507,10 @@ struct station_info {
u16 plid;
u8 plink_state;
s8 signal;
- struct rate_info txrate;
+ u16 status;
+ u8 noise;
+ /* 3 byte hole */
+struct rate_info txrate;
u32 rx_packets;
u32 tx_packets;
u32 tx_retries;
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 18bd0e5..1c01f8f 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -319,6 +319,7 @@ static int ieee80211_config_default_mgmt_key(struct wiphy
*wiphy,
static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
{
struct ieee80211_sub_if_data *sdata = sta->sdata;
+ struct survey_info survey;
sinfo->generation = sdata->local->sta_generation;
@@ -375,6 +376,13 @@ static void sta_set_sinfo(struct sta_info *sta, struct
station_info *sinfo)
sinfo->plink_state = sta->plink_state;
#endif
}
+
+ sinfo->status = sta->flags;
+ if (sdata->local->scanning)
+ sinfo->status |= (1<<15);
+
+ if (drv_get_survey(sdata->local, 0, &survey) == 0)
+ sinfo->noise = survey.noise;
}
diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
index 12222ee..b78ddfc 100644
--- a/net/wireless/wext-compat.c
+++ b/net/wireless/wext-compat.c
@@ -1370,6 +1370,9 @@ struct iw_statistics *cfg80211_wireless_stats(struct
net_device *dev)
wstats.discard.misc = sinfo.rx_dropped_misc;
if (sinfo.filled & STATION_INFO_TX_FAILED)
wstats.discard.retries = sinfo.tx_failed;
+ wstats.status = sinfo.status;
+ wstats.qual.noise = sinfo.noise;
+ wstats.txrate = cfg80211_calculate_bitrate(&sinfo.txrate);
return &wstats;
}
diff --git a/net/wireless/wext-proc.c b/net/wireless/wext-proc.c
index 8bafa31..9ccc338 100644
--- a/net/wireless/wext-proc.c
+++ b/net/wireless/wext-proc.c
@@ -46,8 +46,9 @@ static void wireless_seq_printf_stats(struct seq_file *seq,
}
if (stats) {
+ u32 rt = 100000 * (u32)(stats->txrate);
seq_printf(seq, "%6s: %04x %3d%c %3d%c %3d%c %6d %6d %6d "
- "%6d %6d %6d\n",
+ "%6d %6d %6d %d\n",
dev->name, stats->status, stats->qual.qual,
stats->qual.updated & IW_QUAL_QUAL_UPDATED
? '.' : ' ',
@@ -61,7 +62,8 @@ static void wireless_seq_printf_stats(struct seq_file *seq,
? '.' : ' ',
stats->discard.nwid, stats->discard.code,
stats->discard.fragment, stats->discard.retries,
- stats->discard.misc, stats->miss.beacon);
+ stats->discard.misc, stats->miss.beacon,
+ rt);
if (stats != &nullstats)
stats->qual.updated &= ~IW_QUAL_ALL_UPDATED;
@@ -78,7 +80,7 @@ static int wireless_dev_seq_show(struct seq_file *seq, void
*v)
if (v == SEQ_START_TOKEN)
seq_printf(seq, "Inter-| sta-| Quality | Discarded "
- "packets | Missed | WE\n"
+ "packets | Missed | WE RATE\n"
" face | tus | link level noise | nwid "
"crypt frag retry misc | beacon | %d\n",
WIRELESS_EXT);
--
1.7.2.2
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