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-rw-r--r--include/net/cfg80211.h8
-rw-r--r--include/uapi/linux/nl80211.h4
-rw-r--r--net/wireless/nl80211.c5
-rw-r--r--net/wireless/scan.c5
4 files changed, 22 insertions, 0 deletions
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index d7f8e7b96bcb..3a4a1a903a4d 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1773,6 +1773,8 @@ enum cfg80211_signal_type {
* by %parent_bssid.
* @parent_bssid: the BSS according to which %parent_tsf is set. This is set to
* the BSS that requested the scan in which the beacon/probe was received.
+ * @chains: bitmask for filled values in @chain_signal.
+ * @chain_signal: per-chain signal strength of last received BSS in dBm.
*/
struct cfg80211_inform_bss {
struct ieee80211_channel *chan;
@@ -1781,6 +1783,8 @@ struct cfg80211_inform_bss {
u64 boottime_ns;
u64 parent_tsf;
u8 parent_bssid[ETH_ALEN] __aligned(2);
+ u8 chains;
+ s8 chain_signal[IEEE80211_MAX_CHAINS];
};
/**
@@ -1824,6 +1828,8 @@ struct cfg80211_bss_ies {
* that holds the beacon data. @beacon_ies is still valid, of course, and
* points to the same data as hidden_beacon_bss->beacon_ies in that case.
* @signal: signal strength value (type depends on the wiphy's signal_type)
+ * @chains: bitmask for filled values in @chain_signal.
+ * @chain_signal: per-chain signal strength of last received BSS in dBm.
* @priv: private area for driver use, has at least wiphy->bss_priv_size bytes
*/
struct cfg80211_bss {
@@ -1842,6 +1848,8 @@ struct cfg80211_bss {
u16 capability;
u8 bssid[ETH_ALEN];
+ u8 chains;
+ s8 chain_signal[IEEE80211_MAX_CHAINS];
u8 priv[0] __aligned(sizeof(void *));
};
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index f882fe1f9709..c587a61c32bf 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -3862,6 +3862,9 @@ enum nl80211_bss_scan_width {
* @NL80211_BSS_PARENT_BSSID. (u64).
* @NL80211_BSS_PARENT_BSSID: the BSS according to which @NL80211_BSS_PARENT_TSF
* is set.
+ * @NL80211_BSS_CHAIN_SIGNAL: per-chain signal strength of last BSS update.
+ * Contains a nested array of signal strength attributes (u8, dBm),
+ * using the nesting index as the antenna number.
* @__NL80211_BSS_AFTER_LAST: internal
* @NL80211_BSS_MAX: highest BSS attribute
*/
@@ -3885,6 +3888,7 @@ enum nl80211_bss {
NL80211_BSS_PAD,
NL80211_BSS_PARENT_TSF,
NL80211_BSS_PARENT_BSSID,
+ NL80211_BSS_CHAIN_SIGNAL,
/* keep last */
__NL80211_BSS_AFTER_LAST,
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index e4dddfb64ced..b3f8970c3a47 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -7839,6 +7839,11 @@ static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
intbss->ts_boottime, NL80211_BSS_PAD))
goto nla_put_failure;
+ if (!nl80211_put_signal(msg, intbss->pub.chains,
+ intbss->pub.chain_signal,
+ NL80211_BSS_CHAIN_SIGNAL))
+ goto nla_put_failure;
+
switch (rdev->wiphy.signal_type) {
case CFG80211_SIGNAL_TYPE_MBM:
if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index f6c5fe482506..d36c3eb7b931 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -981,6 +981,9 @@ cfg80211_bss_update(struct cfg80211_registered_device *rdev,
found->ts = tmp->ts;
found->ts_boottime = tmp->ts_boottime;
found->parent_tsf = tmp->parent_tsf;
+ found->pub.chains = tmp->pub.chains;
+ memcpy(found->pub.chain_signal, tmp->pub.chain_signal,
+ IEEE80211_MAX_CHAINS);
ether_addr_copy(found->parent_bssid, tmp->parent_bssid);
} else {
struct cfg80211_internal_bss *new;
@@ -1233,6 +1236,8 @@ cfg80211_inform_bss_frame_data(struct wiphy *wiphy,
tmp.pub.capability = le16_to_cpu(mgmt->u.probe_resp.capab_info);
tmp.ts_boottime = data->boottime_ns;
tmp.parent_tsf = data->parent_tsf;
+ tmp.pub.chains = data->chains;
+ memcpy(tmp.pub.chain_signal, data->chain_signal, IEEE80211_MAX_CHAINS);
ether_addr_copy(tmp.parent_bssid, data->parent_bssid);
signal_valid = abs(data->chan->center_freq - channel->center_freq) <=