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From 9cf02338880dfc5928e98e3a1200d5aacfa6d1c6 Mon Sep 17 00:00:00 2001
From: Ben Greear <greearb@candelatech.com>
Date: Fri, 9 Aug 2019 11:00:01 -0700
Subject: [PATCH] mac80211: add assoc-at support
Git-commit: 9cf02338880dfc5928e98e3a1200d5aacfa6d1c6
Patch-mainline: v5.4-rc1
References: jsc#SLE-13430

Report timestamp for when sta becomes associated.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Link: https://lore.kernel.org/r/20190809180001.26393-2-greearb@candelatech.com
[fix ktime_get_boot_ns() to ktime_get_boottime_ns(), assoc_at type to u64]

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 net/mac80211/sta_info.c | 3 +++
 net/mac80211/sta_info.h | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index fb6614f57cbc..df553070206c 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -1961,6 +1961,7 @@ int sta_info_move_state(struct sta_info *sta,
 	case IEEE80211_STA_ASSOC:
 		if (sta->sta_state == IEEE80211_STA_AUTH) {
 			set_bit(WLAN_STA_ASSOC, &sta->_flags);
+			sta->assoc_at = ktime_get_boottime_ns();
 			ieee80211_recalc_min_chandef(sta->sdata);
 			if (!sta->sta.support_p2p_ps)
 				ieee80211_recalc_p2p_go_ps_allowed(sta->sdata);
@@ -2190,6 +2191,7 @@ void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo,
 			 BIT_ULL(NL80211_STA_INFO_STA_FLAGS) |
 			 BIT_ULL(NL80211_STA_INFO_BSS_PARAM) |
 			 BIT_ULL(NL80211_STA_INFO_CONNECTED_TIME) |
+			 BIT_ULL(NL80211_STA_INFO_ASSOC_AT_BOOTTIME) |
 			 BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC);
 
 	if (sdata->vif.type == NL80211_IFTYPE_STATION) {
@@ -2198,6 +2200,7 @@ void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo,
 	}
 
 	sinfo->connected_time = ktime_get_seconds() - sta->last_connected;
+	sinfo->assoc_at = sta->assoc_at;
 	sinfo->inactive_time =
 		jiffies_to_msecs(jiffies - ieee80211_sta_last_active(sta));
 
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index 3260d4234920..369c2dddce52 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -466,6 +466,7 @@ struct ieee80211_sta_rx_stats {
  *	the station when it leaves powersave or polls for frames
  * @driver_buffered_tids: bitmap of TIDs the driver has data buffered on
  * @txq_buffered_tids: bitmap of TIDs that mac80211 has txq data buffered on
+ * @assoc_at: clock boottime (in ns) of last association
  * @last_connected: time (in seconds) when a station got connected
  * @last_seq_ctrl: last received seq/frag number from this STA (per TID
  *	plus one for non-QoS frames)
@@ -562,6 +563,7 @@ struct sta_info {
 	unsigned long driver_buffered_tids;
 	unsigned long txq_buffered_tids;
 
+	u64 assoc_at;
 	long last_connected;
 
 	/* Updated from RX path only, no locking requirements */
-- 
2.16.4