[PATCH v2] iw: Add support for NL80211_STA_INFO_RX_DURATION netlink attribute

[Mohammed Shafi Shajakhan]

From: Mohammed Shafi Shajakhan <mohammed at qti.qualcomm.com>

Enable support for parsing per station rx-duration (usecs)
via adding support for new netlink attribute NL80211_STA_INFO_RX_DURATION

rx_duration is an approximate total air time(usecs) for all the frames
frames from a connected client. This will get dumped as
part of 'iw dev wlan#N station dump'

Signed-off-by: Mohammed Shafi Shajakhan <mohammed at qti.qualcomm.com>
---
 nl80211.h |    3 +++
 station.c |    5 +++++
 2 files changed, 8 insertions(+)

diff --git a/nl80211.h b/nl80211.h
index 5b7b5eb..d11198f 100644
--- a/nl80211.h
+++ b/nl80211.h
@@ -2464,6 +2464,8 @@ enum nl80211_sta_bss_param {
  *	TID+1 and the special TID 16 (i.e. value 17) is used for non-QoS frames;
  *	each one of those is again nested with &enum nl80211_tid_stats
  *	attributes carrying the actual values.
+ * @NL80210_STA_INFO_RX_DURATION: approximate total air time(usecs) for all the
+ *	frames from a connected client
  * @__NL80211_STA_INFO_AFTER_LAST: internal
  * @NL80211_STA_INFO_MAX: highest possible station info attribute
  */
@@ -2500,6 +2502,7 @@ enum nl80211_sta_info {
 	NL80211_STA_INFO_BEACON_RX,
 	NL80211_STA_INFO_BEACON_SIGNAL_AVG,
 	NL80211_STA_INFO_TID_STATS,
+	NL80211_STA_INFO_RX_DURATION,
 
 	/* keep last */
 	__NL80211_STA_INFO_AFTER_LAST,
diff --git a/station.c b/station.c
index b5ccf4a..a730db1 100644
--- a/station.c
+++ b/station.c
@@ -147,6 +147,7 @@ static int print_sta_handler(struct nl_msg *msg, void *arg)
 		[NL80211_STA_INFO_NONPEER_PM] = { .type = NLA_U32},
 		[NL80211_STA_INFO_CHAIN_SIGNAL] = { .type = NLA_NESTED },
 		[NL80211_STA_INFO_CHAIN_SIGNAL_AVG] = { .type = NLA_NESTED },
+		[NL80211_STA_INFO_RX_DURATION] = { .type = NLA_U64 },
 	};
 	char *chain;
 
@@ -226,6 +227,10 @@ static int print_sta_handler(struct nl_msg *msg, void *arg)
 		printf("\n\trx bitrate:\t%s", buf);
 	}
 
+	if (sinfo[NL80211_STA_INFO_RX_DURATION])
+		printf("\n\trx duration:\t%lld us",
+		       (unsigned long long)nla_get_u64(sinfo[NL80211_STA_INFO_RX_DURATION]));
+
 	if (sinfo[NL80211_STA_INFO_EXPECTED_THROUGHPUT]) {
 		uint32_t thr;
 
-- 
1.7.9.5