mac80211: add patch to include local BSS rx time in survey information

Signed-off-by: Felix Fietkau <nbd@nbd.name>
(cherry-picked from commit 6a3739dc42c1d9626e5784d9316c56962bd8f016)

2 files changed, 79 insertions, 2 deletions

diff --git a/package/kernel/mac80211/patches/subsys/368-cfg80211-add-local-BSS-receive-time-to-survey-inform.patch b/package/kernel/mac80211/patches/subsys/368-cfg80211-add-local-BSS-receive-time-to-survey-inform.patch
new file mode 100644
index 0000000000..e6d384784e
--- /dev/null
+++ b/package/kernel/mac80211/patches/subsys/368-cfg80211-add-local-BSS-receive-time-to-survey-inform.patch
@@ -0,0 +1,77 @@
+From: Felix Fietkau <nbd@nbd.name>
+Date: Wed, 28 Aug 2019 12:13:55 +0200
+Subject: [PATCH] cfg80211: add local BSS receive time to survey information
+
+This is useful for checking how much airtime is being used up by other
+transmissions on the channel, e.g. by calculating (time_rx - time_bss_rx)
+or (time_busy - time_bss_rx - time_tx)
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/include/net/cfg80211.h
++++ b/include/net/cfg80211.h
+@@ -668,6 +668,7 @@ ieee80211_chandef_max_power(struct cfg80
+  * @SURVEY_INFO_TIME_RX: receive time was filled in
+  * @SURVEY_INFO_TIME_TX: transmit time was filled in
+  * @SURVEY_INFO_TIME_SCAN: scan time was filled in
++ * @SURVEY_INFO_TIME_BSS_RX: local BSS receive time was filled in
+  *
+  * Used by the driver to indicate which info in &struct survey_info
+  * it has filled in during the get_survey().
+@@ -681,6 +682,7 @@ enum survey_info_flags {
+ 	SURVEY_INFO_TIME_RX		= BIT(5),
+ 	SURVEY_INFO_TIME_TX		= BIT(6),
+ 	SURVEY_INFO_TIME_SCAN		= BIT(7),
++	SURVEY_INFO_TIME_BSS_RX		= BIT(8),
+ };
+ 
+ /**
+@@ -697,6 +699,7 @@ enum survey_info_flags {
+  * @time_rx: amount of time the radio spent receiving data
+  * @time_tx: amount of time the radio spent transmitting data
+  * @time_scan: amount of time the radio spent for scanning
++ * @time_bss_rx: amount of time the radio spent receiving data on a local BSS
+  *
+  * Used by dump_survey() to report back per-channel survey information.
+  *
+@@ -711,6 +714,7 @@ struct survey_info {
+ 	u64 time_rx;
+ 	u64 time_tx;
+ 	u64 time_scan;
++	u64 time_bss_rx;
+ 	u32 filled;
+ 	s8 noise;
+ };
+--- a/include/uapi/linux/nl80211.h
++++ b/include/uapi/linux/nl80211.h
+@@ -3693,6 +3693,8 @@ enum nl80211_user_reg_hint_type {
+  * @NL80211_SURVEY_INFO_TIME_SCAN: time the radio spent for scan
+  *	(on this channel or globally)
+  * @NL80211_SURVEY_INFO_PAD: attribute used for padding for 64-bit alignment
++ * @NL80211_SURVEY_INFO_TIME_BSS_RX: amount of time the radio spent
++ *	receiving local BSS data
+  * @NL80211_SURVEY_INFO_MAX: highest survey info attribute number
+  *	currently defined
+  * @__NL80211_SURVEY_INFO_AFTER_LAST: internal use
+@@ -3709,6 +3711,7 @@ enum nl80211_survey_info {
+ 	NL80211_SURVEY_INFO_TIME_TX,
+ 	NL80211_SURVEY_INFO_TIME_SCAN,
+ 	NL80211_SURVEY_INFO_PAD,
++	NL80211_SURVEY_INFO_TIME_BSS_RX,
+ 
+ 	/* keep last */
+ 	__NL80211_SURVEY_INFO_AFTER_LAST,
+--- a/net/wireless/nl80211.c
++++ b/net/wireless/nl80211.c
+@@ -8367,6 +8367,10 @@ static int nl80211_send_survey(struct sk
+ 	    nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
+ 			      survey->time_scan, NL80211_SURVEY_INFO_PAD))
+ 		goto nla_put_failure;
++	if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
++	    nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
++			      survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
++		goto nla_put_failure;
+ 
+ 	nla_nest_end(msg, infoattr);
+ 
diff --git a/package/kernel/mac80211/patches/subsys/522-mac80211_configure_antenna_gain.patch b/package/kernel/mac80211/patches/subsys/522-mac80211_configure_antenna_gain.patch
index 4c4eb7917e..2b3b1245e4 100644
--- a/package/kernel/mac80211/patches/subsys/522-mac80211_configure_antenna_gain.patch
+++ b/package/kernel/mac80211/patches/subsys/522-mac80211_configure_antenna_gain.patch
@@ -1,6 +1,6 @@
 --- a/include/net/cfg80211.h
 +++ b/include/net/cfg80211.h
-@@ -2968,6 +2968,7 @@ struct cfg80211_external_auth_params {
+@@ -2972,6 +2972,7 @@ struct cfg80211_external_auth_params {
   *	(as advertised by the nl80211 feature flag.)
   * @get_tx_power: store the current TX power into the dbm variable;
   *	return 0 if successful
@@ -8,7 +8,7 @@
   *
   * @set_wds_peer: set the WDS peer for a WDS interface
   *
-@@ -3268,6 +3269,7 @@ struct cfg80211_ops {
+@@ -3272,6 +3273,7 @@ struct cfg80211_ops {
  				enum nl80211_tx_power_setting type, int mbm);
  	int	(*get_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev,
  				int *dbm);