From a85e1d55974646a442d95911e3f7d7a891ea9ac5 Mon Sep 17 00:00:00 2001
From: Paul Stewart <pstew@chromium.org>
Date: Fri, 9 Dec 2011 11:01:49 -0800
Subject: [PATCH] cfg80211: Return beacon loss count in station
If station info contains a beacon loss count, return
it to userspace.
Signed-off-by: Paul Stewart <pstew@chromium.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
include/linux/nl80211.h | 2 ++
include/net/cfg80211.h | 7 ++++++-
net/mac80211/cfg.c | 4 +++-
net/mac80211/mlme.c | 8 ++++++++
net/mac80211/sta_info.h | 2 ++
net/wireless/nl80211.c | 3 +++
6 files changed, 24 insertions(+), 2 deletions(-)
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index f795cb7dccdda..0f5ff37398206 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -1655,6 +1655,7 @@ enum nl80211_sta_bss_param {
* containing info as possible, see &enum nl80211_sta_bss_param
* @NL80211_STA_INFO_CONNECTED_TIME: time since the station is last connected
* @NL80211_STA_INFO_STA_FLAGS: Contains a struct nl80211_sta_flag_update.
+ * @NL80211_STA_INFO_BEACON_LOSS: count of times beacon loss was detected (u32)
* @__NL80211_STA_INFO_AFTER_LAST: internal
* @NL80211_STA_INFO_MAX: highest possible station info attribute
*/
@@ -1677,6 +1678,7 @@ enum nl80211_sta_info {
NL80211_STA_INFO_BSS_PARAM,
NL80211_STA_INFO_CONNECTED_TIME,
NL80211_STA_INFO_STA_FLAGS,
+ NL80211_STA_INFO_BEACON_LOSS,
/* keep last */
__NL80211_STA_INFO_AFTER_LAST,
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 9f85fca0b6766..15f4be7d768e4 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -505,6 +505,7 @@ struct station_parameters {
* @STATION_INFO_CONNECTED_TIME: @connected_time filled
* @STATION_INFO_ASSOC_REQ_IES: @assoc_req_ies filled
* @STATION_INFO_STA_FLAGS: @sta_flags filled
+ * @STATION_INFO_BEACON_LOSS_COUNT: @beacon_loss_count filled
*/
enum station_info_flags {
STATION_INFO_INACTIVE_TIME = 1<<0,
@@ -525,7 +526,8 @@ enum station_info_flags {
STATION_INFO_BSS_PARAM = 1<<15,
STATION_INFO_CONNECTED_TIME = 1<<16,
STATION_INFO_ASSOC_REQ_IES = 1<<17,
- STATION_INFO_STA_FLAGS = 1<<18
+ STATION_INFO_STA_FLAGS = 1<<18,
+ STATION_INFO_BEACON_LOSS_COUNT = 1<<19
};
/**
@@ -623,6 +625,7 @@ struct sta_bss_parameters {
* the cfg80211_new_sta() calls to notify user space of the IEs.
* @assoc_req_ies_len: Length of assoc_req_ies buffer in octets.
* @sta_flags: station flags mask & values
+ * @beacon_loss_count: Number of times beacon loss event has triggered.
*/
struct station_info {
u32 filled;
@@ -650,6 +653,8 @@ struct station_info {
const u8 *assoc_req_ies;
size_t assoc_req_ies_len;
+ u32 beacon_loss_count;
+
/*
* Note: Add a new enum station_info_flags value for each new field and
* use it to check which fields are initialized.
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 66ad9d9af87f8..850bb96bd6805 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -355,7 +355,8 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
STATION_INFO_RX_DROP_MISC |
STATION_INFO_BSS_PARAM |
STATION_INFO_CONNECTED_TIME |
- STATION_INFO_STA_FLAGS;
+ STATION_INFO_STA_FLAGS |
+ STATION_INFO_BEACON_LOSS_COUNT;
do_posix_clock_monotonic_gettime(&uptime);
sinfo->connected_time = uptime.tv_sec - sta->last_connected;
@@ -368,6 +369,7 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
sinfo->tx_retries = sta->tx_retry_count;
sinfo->tx_failed = sta->tx_retry_failed;
sinfo->rx_dropped_misc = sta->rx_dropped;
+ sinfo->beacon_loss_count = sta->beacon_loss_count;
if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
(sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index a984f1f60ddbc..57989a046fcac 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1381,6 +1381,14 @@ void ieee80211_beacon_connection_loss_work(struct work_struct *work)
struct ieee80211_sub_if_data *sdata =
container_of(work, struct ieee80211_sub_if_data,
u.mgd.beacon_connection_loss_work);
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct sta_info *sta;
+
+ if (ifmgd->associated) {
+ sta = sta_info_get(sdata, ifmgd->bssid);
+ if (sta)
+ sta->beacon_loss_count++;
+ }
if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
__ieee80211_connection_loss(sdata);
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index dee284290464a..6f77f12dc3fc3 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -275,6 +275,7 @@ struct sta_ampdu_mlme {
* EAP frames before association
* @sta: station information we share with the driver
* @sta_state: duplicates information about station state (for debug)
+ * @beacon_loss_count: number of times beacon loss has triggered
*/
struct sta_info {
/* General information, mostly static */
@@ -367,6 +368,7 @@ struct sta_info {
#endif
unsigned int lost_packets;
+ unsigned int beacon_loss_count;
/* should be right in front of sta to be in the same cache line */
bool dummy;
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index b07c4fc4ae223..b3d3cf8931cb9 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -2390,6 +2390,9 @@ static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
if (sinfo->filled & STATION_INFO_TX_FAILED)
NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED,
sinfo->tx_failed);
+ if (sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT)
+ NLA_PUT_U32(msg, NL80211_STA_INFO_BEACON_LOSS,
+ sinfo->beacon_loss_count);
if (sinfo->filled & STATION_INFO_BSS_PARAM) {
bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
if (!bss_param)
--
2.30.2