Johannes Berg a écrit :
The noise value as is won't be used, isn't
filled by most drivers and doesn't really
make a whole lot of sense on a per packet
basis -- proper cfg80211 survey support in
mac80211 will need to be different.
Mark the struct member as deprecated so it
will be removed from drivers.
Signed-off-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
---
I shouldn't be trying this at 9:30pm...
Currently creates the following warnings:
drivers/net/wireless/mwl8k.c:756: warning: ‘noise’ is deprecated
drivers/net/wireless/mwl8k.c:858: warning: ‘noise’ is deprecated
drivers/net/wireless/ath/ar9170/main.c:928: warning: ‘noise’ is deprecated
drivers/net/wireless/ath/ath9k/common.c:215: warning: ‘noise’ is deprecated
drivers/net/wireless/ath/ath5k/base.c:1941: warning: ‘noise’ is deprecated
drivers/net/wireless/ath/ath5k/base.c:1942: warning: ‘noise’ is deprecated
drivers/net/wireless/b43/xmit.c:613: warning: ‘noise’ is deprecated
drivers/net/wireless/b43legacy/xmit.c:551: warning: ‘noise’ is deprecated
drivers/net/wireless/libertas_tf/main.c:497: warning: ‘noise’ is deprecated
drivers/net/wireless/rt2x00/rt2x00dev.c:437: warning: ‘noise’ is deprecated
drivers/net/wireless/p54/txrx.c:353: warning: ‘noise’ is deprecated
drivers/net/wireless/wl12xx/wl1251_rx.c:80: warning: ‘noise’ is deprecated
drivers/net/wireless/wl12xx/wl1271_rx.c:139: warning: ‘noise’ is deprecated
drivers/net/wireless/iwlwifi/iwl-3945.c:682: warning: ‘noise’ is deprecated
drivers/net/wireless/iwlwifi/iwl-3945.c:685: warning: ‘noise’ is deprecated
drivers/net/wireless/iwlwifi/iwl-3945.c:689: warning: ‘noise’ is deprecated
drivers/net/wireless/iwlwifi/iwl-3945.c:697: warning: ‘noise’ is deprecated
drivers/net/wireless/iwlwifi/iwl-3945.c:711: warning: ‘noise’ is deprecated
drivers/net/wireless/iwlwifi/iwl-rx.c:1191: warning: ‘noise’ is deprecated
drivers/net/wireless/iwlwifi/iwl-rx.c:1193: warning: ‘noise’ is deprecated
drivers/net/wireless/iwlwifi/iwl-rx.c:1206: warning: ‘noise’ is deprecated
I'll make patches for drivers when it becomes
clear that it won't clash with any work others
have pending.
include/net/mac80211.h | 4 ++--
net/mac80211/debugfs_sta.c | 2 --
net/mac80211/rx.c | 9 ---------
net/mac80211/sta_info.h | 2 --
4 files changed, 2 insertions(+), 15 deletions(-)
--- wireless-testing.orig/include/net/mac80211.h 2010-02-17 20:57:33.000000000 +0100
+++ wireless-testing/include/net/mac80211.h 2010-02-17 21:25:46.000000000 +0100
@@ -543,7 +543,7 @@ enum mac80211_rx_flags {
* @signal: signal strength when receiving this frame, either in dBm, in dB or
* unspecified depending on the hardware capabilities flags
* @IEEE80211_HW_SIGNAL_*
- * @noise: noise when receiving this frame, in dBm.
+ * @noise: noise when receiving this frame, in dBm (DEPRECATED).
* @antenna: antenna used
* @rate_idx: index of data rate into band's supported rates or MCS index if
* HT rates are use (RX_FLAG_HT)
@@ -554,7 +554,7 @@ struct ieee80211_rx_status {
enum ieee80211_band band;
int freq;
int signal;
- int noise;
+ int noise __deprecated;
int antenna;
int rate_idx;
int flag;
--- wireless-testing.orig/net/mac80211/debugfs_sta.c 2010-02-17 21:20:49.000000000 +0100
+++ wireless-testing/net/mac80211/debugfs_sta.c 2010-02-17 21:20:53.000000000 +0100
@@ -57,7 +57,6 @@ STA_FILE(tx_filtered, tx_filtered_count,
STA_FILE(tx_retry_failed, tx_retry_failed, LU);
STA_FILE(tx_retry_count, tx_retry_count, LU);
STA_FILE(last_signal, last_signal, D);
-STA_FILE(last_noise, last_noise, D);
STA_FILE(wep_weak_iv_count, wep_weak_iv_count, LU);
static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
@@ -289,7 +288,6 @@ void ieee80211_sta_debugfs_add(struct st
DEBUGFS_ADD(tx_retry_failed);
DEBUGFS_ADD(tx_retry_count);
DEBUGFS_ADD(last_signal);
- DEBUGFS_ADD(last_noise);
DEBUGFS_ADD(wep_weak_iv_count);
DEBUGFS_ADD(ht_capa);
}
--- wireless-testing.orig/net/mac80211/rx.c 2010-02-17 21:20:32.000000000 +0100
+++ wireless-testing/net/mac80211/rx.c 2010-02-17 21:26:31.000000000 +0100
@@ -179,14 +179,6 @@ ieee80211_add_rx_radiotap_header(struct
pos++;
}
- /* IEEE80211_RADIOTAP_DBM_ANTNOISE */
- if (local->hw.flags & IEEE80211_HW_NOISE_DBM) {
- *pos = status->noise;
- rthdr->it_present |=
- cpu_to_le32(1 << IEEE80211_RADIOTAP_DBM_ANTNOISE);
- pos++;
- }
-
/* IEEE80211_RADIOTAP_LOCK_QUALITY is missing */
/* IEEE80211_RADIOTAP_ANTENNA */
@@ -1078,7 +1070,6 @@ ieee80211_rx_h_sta_process(struct ieee80
sta->rx_fragments++;
sta->rx_bytes += rx->skb->len;
sta->last_signal = status->signal;
- sta->last_noise = status->noise;
/*
* Change STA power saving mode only at the end of a frame
--- wireless-testing.orig/net/mac80211/sta_info.h 2010-02-17 21:20:39.000000000 +0100
+++ wireless-testing/net/mac80211/sta_info.h 2010-02-17 21:20:44.000000000 +0100
@@ -200,7 +200,6 @@ struct sta_ampdu_mlme {
* @rx_fragments: number of received MPDUs
* @rx_dropped: number of dropped MPDUs from this STA
* @last_signal: signal of last received frame from this STA
- * @last_noise: noise of last received frame from this STA
* @last_seq_ctrl: last received seq/frag number from this STA (per RX queue)
* @tx_filtered_count: number of frames the hardware filtered for this STA
* @tx_retry_failed: number of frames that failed retry
@@ -271,7 +270,6 @@ struct sta_info {
unsigned long rx_fragments;
unsigned long rx_dropped;
int last_signal;
- int last_noise;
__le16 last_seq_ctrl[NUM_RX_DATA_QUEUES];
/* Updated from TX status path only, no locking requirements */
I just wrote an application that read "last_signal" and "last_noise" in
order to compute the SNR value of all neighboring nodes in
/sys/kernel/debug/ieee80211/phy0/stations. So, it is used and needed.
Being per packet or global, I'm not an RF engineer to say what's best,
but even if it is global, "last_noise" would still be useful as "global
noise when the last packets was received from this node".
My 2 cents,
Benoit
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