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openwrt/package/mac80211/patches/522-ath9k_per_chain_signal_strength.patch
Felix Fietkau fca519e06d ath9k: remove a lock to fix a deadlock on hw reset 
SVN-Revision: 35147
2013-01-14 09:51:53 +00:00

385 lines
13 KiB
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Raw Blame History

--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -816,6 +816,9 @@ 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_*
+ * @chains: bitmask of receive chains for which separate signal strength
+ * values were filled.
+ * @chain_signal: per-chain signal strength, same format as @signal
* @antenna: antenna used
* @rate_idx: index of data rate into band's supported rates or MCS index if
* HT or VHT is used (%RX_FLAG_HT/%RX_FLAG_VHT)
@@ -847,6 +850,8 @@ struct ieee80211_rx_status {
u8 band;
u8 antenna;
s8 signal;
+ u8 chains;
+ s8 chain_signal[4];
u8 ampdu_delimiter_crc;
u8 vendor_radiotap_align;
u8 vendor_radiotap_oui[3];
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -335,6 +335,11 @@ struct sta_info {
int last_signal;
struct ewma avg_signal;
int last_ack_signal;
+
+ u8 chains;
+ s8 chain_signal_last[4];
+ struct ewma chain_signal_avg[4];
+
/* Plus 1 for non-QoS frames */
__le16 last_seq_ctrl[IEEE80211_NUM_TIDS + 1];
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1375,6 +1375,7 @@ ieee80211_rx_h_sta_process(struct ieee80
struct sk_buff *skb = rx->skb;
struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+ int i;
if (!sta)
return RX_CONTINUE;
@@ -1425,6 +1426,19 @@ ieee80211_rx_h_sta_process(struct ieee80
ewma_add(&sta->avg_signal, -status->signal);
}
+ if (status->chains) {
+ sta->chains = status->chains;
+ for (i = 0; i < 4; i++) {
+ int signal = status->chain_signal[i];
+
+ if (!(status->chains & BIT(i)))
+ continue;
+
+ sta->chain_signal_last[i] = signal;
+ ewma_add(&sta->chain_signal_avg[i], -signal);
+ }
+ }
+
/*
* Change STA power saving mode only at the end of a frame
* exchange sequence.
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -356,6 +356,8 @@ struct sta_info *sta_info_alloc(struct i
do_posix_clock_monotonic_gettime(&uptime);
sta->last_connected = uptime.tv_sec;
ewma_init(&sta->avg_signal, 1024, 8);
+ for (i = 0; i < ARRAY_SIZE(sta->chain_signal_avg); i++)
+ ewma_init(&sta->chain_signal_avg[i], 1024, 8);
if (sta_prepare_rate_control(local, sta, gfp)) {
kfree(sta);
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -653,6 +653,8 @@ struct station_parameters {
* @STATION_INFO_STA_FLAGS: @sta_flags filled
* @STATION_INFO_BEACON_LOSS_COUNT: @beacon_loss_count filled
* @STATION_INFO_T_OFFSET: @t_offset filled
+ * @STATION_INFO_CHAIN_SIGNAL: @chain_signal filled
+ * @STATION_INFO_CHAIN_SIGNAL_AVG: @chain_signal_avg filled
*/
enum station_info_flags {
STATION_INFO_INACTIVE_TIME = 1<<0,
@@ -676,6 +678,8 @@ enum station_info_flags {
STATION_INFO_STA_FLAGS = 1<<18,
STATION_INFO_BEACON_LOSS_COUNT = 1<<19,
STATION_INFO_T_OFFSET = 1<<20,
+ STATION_INFO_CHAIN_SIGNAL = 1<<21,
+ STATION_INFO_CHAIN_SIGNAL_AVG = 1<<22,
};
/**
@@ -769,6 +773,9 @@ struct sta_bss_parameters {
* For CFG80211_SIGNAL_TYPE_MBM, value is expressed in _dBm_.
* @signal_avg: Average signal strength, type depends on the wiphy's signal_type.
* For CFG80211_SIGNAL_TYPE_MBM, value is expressed in _dBm_.
+ * @chains: bitmask for filled values in @chain_signal, @chain_signal_avg
+ * @chain_signal: per-chain signal strength of last received packet in dBm
+ * @chain_signal_avg: per-chain signal strength average in dBm
* @txrate: current unicast bitrate from this station
* @rxrate: current unicast bitrate to this station
* @rx_packets: packets received from this station
@@ -801,6 +808,11 @@ struct station_info {
u8 plink_state;
s8 signal;
s8 signal_avg;
+
+ u8 chains;
+ s8 chain_signal[4];
+ s8 chain_signal_avg[4];
+
struct rate_info txrate;
struct rate_info rxrate;
u32 rx_packets;
--- a/drivers/net/wireless/ath/ath9k/mac.h
+++ b/drivers/net/wireless/ath/ath9k/mac.h
@@ -133,12 +133,8 @@ struct ath_rx_status {
u8 rs_rate;
u8 rs_antenna;
u8 rs_more;
- int8_t rs_rssi_ctl0;
- int8_t rs_rssi_ctl1;
- int8_t rs_rssi_ctl2;
- int8_t rs_rssi_ext0;
- int8_t rs_rssi_ext1;
- int8_t rs_rssi_ext2;
+ int8_t rs_rssi_ctl[3];
+ int8_t rs_rssi_ext[3];
u8 rs_isaggr;
u8 rs_moreaggr;
u8 rs_num_delims;
--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -936,6 +936,7 @@ static int ath9k_rx_skb_preprocess(struc
bool *decrypt_error)
{
struct ath_hw *ah = common->ah;
+ int i, j;
/*
* everything but the rate is checked here, the rate check is done
@@ -961,6 +962,20 @@ static int ath9k_rx_skb_preprocess(struc
if (rx_stats->rs_moreaggr)
rx_status->flag |= RX_FLAG_NO_SIGNAL_VAL;
+ for (i = 0, j = 0; i < ARRAY_SIZE(rx_stats->rs_rssi_ctl); i++) {
+ s8 rssi;
+
+ if (!(ah->rxchainmask & BIT(i)))
+ continue;
+
+ rssi = rx_stats->rs_rssi_ctl[i];
+ if (rssi != ATH9K_RSSI_BAD) {
+ rx_status->chains |= BIT(j);
+ rx_status->chain_signal[j] = ah->noise + rssi;
+ }
+ j++;
+ }
+
return 0;
}
--- a/drivers/net/wireless/ath/ath9k/ar9003_mac.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
@@ -475,12 +475,12 @@ int ath9k_hw_process_rxdesc_edma(struct
/* XXX: Keycache */
rxs->rs_rssi = MS(rxsp->status5, AR_RxRSSICombined);
- rxs->rs_rssi_ctl0 = MS(rxsp->status1, AR_RxRSSIAnt00);
- rxs->rs_rssi_ctl1 = MS(rxsp->status1, AR_RxRSSIAnt01);
- rxs->rs_rssi_ctl2 = MS(rxsp->status1, AR_RxRSSIAnt02);
- rxs->rs_rssi_ext0 = MS(rxsp->status5, AR_RxRSSIAnt10);
- rxs->rs_rssi_ext1 = MS(rxsp->status5, AR_RxRSSIAnt11);
- rxs->rs_rssi_ext2 = MS(rxsp->status5, AR_RxRSSIAnt12);
+ rxs->rs_rssi_ctl[0] = MS(rxsp->status1, AR_RxRSSIAnt00);
+ rxs->rs_rssi_ctl[1] = MS(rxsp->status1, AR_RxRSSIAnt01);
+ rxs->rs_rssi_ctl[2] = MS(rxsp->status1, AR_RxRSSIAnt02);
+ rxs->rs_rssi_ext[0] = MS(rxsp->status5, AR_RxRSSIAnt10);
+ rxs->rs_rssi_ext[1] = MS(rxsp->status5, AR_RxRSSIAnt11);
+ rxs->rs_rssi_ext[2] = MS(rxsp->status5, AR_RxRSSIAnt12);
if (rxsp->status11 & AR_RxKeyIdxValid)
rxs->rs_keyix = MS(rxsp->status11, AR_KeyIdx);
--- a/drivers/net/wireless/ath/ath9k/mac.c
+++ b/drivers/net/wireless/ath/ath9k/mac.c
@@ -553,25 +553,25 @@ int ath9k_hw_rxprocdesc(struct ath_hw *a
if (ads.ds_rxstatus8 & AR_PostDelimCRCErr) {
rs->rs_rssi = ATH9K_RSSI_BAD;
- rs->rs_rssi_ctl0 = ATH9K_RSSI_BAD;
- rs->rs_rssi_ctl1 = ATH9K_RSSI_BAD;
- rs->rs_rssi_ctl2 = ATH9K_RSSI_BAD;
- rs->rs_rssi_ext0 = ATH9K_RSSI_BAD;
- rs->rs_rssi_ext1 = ATH9K_RSSI_BAD;
- rs->rs_rssi_ext2 = ATH9K_RSSI_BAD;
+ rs->rs_rssi_ctl[0] = ATH9K_RSSI_BAD;
+ rs->rs_rssi_ctl[1] = ATH9K_RSSI_BAD;
+ rs->rs_rssi_ctl[2] = ATH9K_RSSI_BAD;
+ rs->rs_rssi_ext[0] = ATH9K_RSSI_BAD;
+ rs->rs_rssi_ext[1] = ATH9K_RSSI_BAD;
+ rs->rs_rssi_ext[2] = ATH9K_RSSI_BAD;
} else {
rs->rs_rssi = MS(ads.ds_rxstatus4, AR_RxRSSICombined);
- rs->rs_rssi_ctl0 = MS(ads.ds_rxstatus0,
+ rs->rs_rssi_ctl[0] = MS(ads.ds_rxstatus0,
AR_RxRSSIAnt00);
- rs->rs_rssi_ctl1 = MS(ads.ds_rxstatus0,
+ rs->rs_rssi_ctl[1] = MS(ads.ds_rxstatus0,
AR_RxRSSIAnt01);
- rs->rs_rssi_ctl2 = MS(ads.ds_rxstatus0,
+ rs->rs_rssi_ctl[2] = MS(ads.ds_rxstatus0,
AR_RxRSSIAnt02);
- rs->rs_rssi_ext0 = MS(ads.ds_rxstatus4,
+ rs->rs_rssi_ext[0] = MS(ads.ds_rxstatus4,
AR_RxRSSIAnt10);
- rs->rs_rssi_ext1 = MS(ads.ds_rxstatus4,
+ rs->rs_rssi_ext[1] = MS(ads.ds_rxstatus4,
AR_RxRSSIAnt11);
- rs->rs_rssi_ext2 = MS(ads.ds_rxstatus4,
+ rs->rs_rssi_ext[2] = MS(ads.ds_rxstatus4,
AR_RxRSSIAnt12);
}
if (ads.ds_rxstatus8 & AR_RxKeyIdxValid)
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -938,12 +938,12 @@ void ath_debug_stat_rx(struct ath_softc
#ifdef CONFIG_ATH9K_MAC_DEBUG
spin_lock(&sc->debug.samp_lock);
RX_SAMP_DBG(jiffies) = jiffies;
- RX_SAMP_DBG(rssi_ctl0) = rs->rs_rssi_ctl0;
- RX_SAMP_DBG(rssi_ctl1) = rs->rs_rssi_ctl1;
- RX_SAMP_DBG(rssi_ctl2) = rs->rs_rssi_ctl2;
- RX_SAMP_DBG(rssi_ext0) = rs->rs_rssi_ext0;
- RX_SAMP_DBG(rssi_ext1) = rs->rs_rssi_ext1;
- RX_SAMP_DBG(rssi_ext2) = rs->rs_rssi_ext2;
+ RX_SAMP_DBG(rssi_ctl0) = rs->rs_rssi_ctl[0];
+ RX_SAMP_DBG(rssi_ctl1) = rs->rs_rssi_ctl[1];
+ RX_SAMP_DBG(rssi_ctl2) = rs->rs_rssi_ctl[2];
+ RX_SAMP_DBG(rssi_ext0) = rs->rs_rssi_ext[0];
+ RX_SAMP_DBG(rssi_ext1) = rs->rs_rssi_ext[1];
+ RX_SAMP_DBG(rssi_ext2) = rs->rs_rssi_ext[2];
RX_SAMP_DBG(antenna) = rs->rs_antenna;
RX_SAMP_DBG(rssi) = rs->rs_rssi;
RX_SAMP_DBG(rate) = rs->rs_rate;
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -1838,6 +1838,8 @@ enum nl80211_sta_bss_param {
* @NL80211_STA_INFO_STA_FLAGS: Contains a struct nl80211_sta_flag_update.
* @NL80211_STA_INFO_BEACON_LOSS: count of times beacon loss was detected (u32)
* @NL80211_STA_INFO_T_OFFSET: timing offset with respect to this STA (s64)
+ * @NL80211_STA_INFO_CHAIN_SIGNAL: per-chain signal strength of last PPDU
+ * @NL80211_STA_INFO_CHAIN_SIGNAL_AVG: per-chain signal strength average
* @__NL80211_STA_INFO_AFTER_LAST: internal
* @NL80211_STA_INFO_MAX: highest possible station info attribute
*/
@@ -1862,6 +1864,8 @@ enum nl80211_sta_info {
NL80211_STA_INFO_STA_FLAGS,
NL80211_STA_INFO_BEACON_LOSS,
NL80211_STA_INFO_T_OFFSET,
+ NL80211_STA_INFO_CHAIN_SIGNAL,
+ NL80211_STA_INFO_CHAIN_SIGNAL_AVG,
/* keep last */
__NL80211_STA_INFO_AFTER_LAST,
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -2910,6 +2910,32 @@ static bool nl80211_put_sta_rate(struct
return true;
}
+static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
+ int id)
+{
+ void *attr;
+ int i = 0;
+
+ if (!mask)
+ return true;
+
+ attr = nla_nest_start(msg, id);
+ if (!attr)
+ return false;
+
+ for (i = 0; i < 4; i++) {
+ if (!(mask & BIT(i)))
+ continue;
+
+ if (nla_put_u8(msg, i, signal[i]))
+ return false;
+ }
+
+ nla_nest_end(msg, attr);
+
+ return true;
+}
+
static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
int flags,
struct cfg80211_registered_device *rdev,
@@ -2971,6 +2997,18 @@ static int nl80211_send_station(struct s
default:
break;
}
+ if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
+ if (!nl80211_put_signal(msg, sinfo->chains,
+ sinfo->chain_signal,
+ NL80211_STA_INFO_CHAIN_SIGNAL))
+ goto nla_put_failure;
+ }
+ if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
+ if (!nl80211_put_signal(msg, sinfo->chains,
+ sinfo->chain_signal_avg,
+ NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
+ goto nla_put_failure;
+ }
if (sinfo->filled & STATION_INFO_TX_BITRATE) {
if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
NL80211_STA_INFO_TX_BITRATE))
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -435,6 +435,7 @@ static void sta_set_sinfo(struct sta_inf
struct ieee80211_sub_if_data *sdata = sta->sdata;
struct ieee80211_local *local = sdata->local;
struct timespec uptime;
+ int i;
sinfo->generation = sdata->local->sta_generation;
@@ -474,6 +475,17 @@ static void sta_set_sinfo(struct sta_inf
sinfo->signal = (s8)sta->last_signal;
sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
}
+ if (sta->chains) {
+ sinfo->filled |= STATION_INFO_CHAIN_SIGNAL |
+ STATION_INFO_CHAIN_SIGNAL_AVG;
+
+ sinfo->chains = sta->chains;
+ for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) {
+ sinfo->chain_signal[i] = sta->chain_signal_last[i];
+ sinfo->chain_signal_avg[i] =
+ (s8) -ewma_read(&sta->chain_signal_avg[i]);
+ }
+ }
sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
sta_set_rate_info_rx(sta, &sinfo->rxrate);
--- a/drivers/net/wireless/ath/ath9k/dfs.c
+++ b/drivers/net/wireless/ath/ath9k/dfs.c
@@ -164,8 +164,8 @@ void ath9k_dfs_process_phyerr(struct ath
return;
}
- ard.rssi = rs->rs_rssi_ctl0;
- ard.ext_rssi = rs->rs_rssi_ext0;
+ ard.rssi = rs->rs_rssi_ctl[0];
+ ard.ext_rssi = rs->rs_rssi_ext[0];
/*
* hardware stores this as 8 bit signed value.
--- a/drivers/net/wireless/ath/ath9k/antenna.c
+++ b/drivers/net/wireless/ath/ath9k/antenna.c
@@ -546,14 +546,14 @@ void ath_ant_comb_scan(struct ath_softc
struct ath_ant_comb *antcomb = &sc->ant_comb;
int alt_ratio = 0, alt_rssi_avg = 0, main_rssi_avg = 0, curr_alt_set;
int curr_main_set;
- int main_rssi = rs->rs_rssi_ctl0;
- int alt_rssi = rs->rs_rssi_ctl1;
+ int main_rssi = rs->rs_rssi_ctl[0];
+ int alt_rssi = rs->rs_rssi_ctl[1];
int rx_ant_conf, main_ant_conf;
bool short_scan = false;
- rx_ant_conf = (rs->rs_rssi_ctl2 >> ATH_ANT_RX_CURRENT_SHIFT) &
+ rx_ant_conf = (rs->rs_rssi_ctl[2] >> ATH_ANT_RX_CURRENT_SHIFT) &
ATH_ANT_RX_MASK;
- main_ant_conf = (rs->rs_rssi_ctl2 >> ATH_ANT_RX_MAIN_SHIFT) &
+ main_ant_conf = (rs->rs_rssi_ctl[2] >> ATH_ANT_RX_MAIN_SHIFT) &
ATH_ANT_RX_MASK;
/* Record packet only when both main_rssi and alt_rssi is positive */
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