Signed-off-by: Felix Fietkau <nbd@xxxxxxxxxxx>
---
include/net/cfg80211.h | 14 ++++++++++++++
include/uapi/linux/nl80211.h | 6 ++++++
net/wireless/nl80211.c | 38 ++++++++++++++++++++++++++++++++++++++
3 files changed, 58 insertions(+)
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index dff96d8..0c51500 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -753,6 +753,8 @@ int cfg80211_check_station_change(struct wiphy *wiphy,
* @STATION_INFO_LOCAL_PM: @local_pm filled
* @STATION_INFO_PEER_PM: @peer_pm filled
* @STATION_INFO_NONPEER_PM: @nonpeer_pm 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,
@@ -781,6 +783,8 @@ enum station_info_flags {
STATION_INFO_NONPEER_PM = 1<<23,
STATION_INFO_RX_BYTES64 = 1<<24,
STATION_INFO_TX_BYTES64 = 1<<25,
+ STATION_INFO_CHAIN_SIGNAL = 1<<26,
+ STATION_INFO_CHAIN_SIGNAL_AVG = 1<<27,
};
/**
@@ -857,6 +861,8 @@ struct sta_bss_parameters {
u16 beacon_interval;
};
+#define IEEE80211_MAX_CHAINS 4
+
/**
* struct station_info - station information
*
@@ -874,6 +880,9 @@ 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
@@ -909,6 +918,11 @@ struct station_info {
u8 plink_state;
s8 signal;
s8 signal_avg;
+
+ u8 chains;
+ s8 chain_signal[IEEE80211_MAX_CHAINS];
+ s8 chain_signal_avg[IEEE80211_MAX_CHAINS];
+
struct rate_info txrate;
struct rate_info rxrate;
u32 rx_packets;
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 79da871..2f9c380 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -1973,6 +1973,10 @@ enum nl80211_sta_bss_param {
* @NL80211_STA_INFO_PEER_PM: peer mesh STA link-specific power mode
* @NL80211_STA_INFO_NONPEER_PM: neighbor mesh STA power save mode towards
* non-peer STA
+ * @NL80211_STA_INFO_CHAIN_SIGNAL: per-chain signal strength of last PPDU
+ * Contains a nested array of signal strength attributes (u8, dBm)
+ * @NL80211_STA_INFO_CHAIN_SIGNAL_AVG: per-chain signal strength average
+ * Same format as NL80211_STA_INFO_CHAIN_SIGNAL.
* @__NL80211_STA_INFO_AFTER_LAST: internal
* @NL80211_STA_INFO_MAX: highest possible station info attribute
*/
@@ -2002,6 +2006,8 @@ enum nl80211_sta_info {
NL80211_STA_INFO_NONPEER_PM,
NL80211_STA_INFO_RX_BYTES64,
NL80211_STA_INFO_TX_BYTES64,
+ NL80211_STA_INFO_CHAIN_SIGNAL,
+ NL80211_STA_INFO_CHAIN_SIGNAL_AVG,
/* keep last */
__NL80211_STA_INFO_AFTER_LAST,
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 671b69a..c09a84e 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -3365,6 +3365,32 @@ static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
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 < IEEE80211_MAX_CHAINS; 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,
@@ -3436,6 +3462,18 @@ static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
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))
--
1.8.0.2
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