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{mac|nl}80211: Add station connected time

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Add station connected time in debugfs. This will be helpful to get a
measure of stability of the connection and for debugging stress issues

Cc: Senthilkumar Balasubramanian <Senthilkumar.Balasubramanian@Atheros.com>
Signed-off-by: Mohammed Shafi Shajakhan <mshajakhan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Mohammed Shafi Shajakhan 2011-04-08 21:24:24 +05:30 committed by John W. Linville
parent f60c49b67d
commit ebe27c91af
7 changed files with 46 additions and 1 deletions
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2
include/linux/nl80211.h
View File

@ -1297,6 +1297,7 @@ enum nl80211_sta_bss_param {
* attribute, like NL80211_STA_INFO_TX_BITRATE.
* @NL80211_STA_INFO_BSS_PARAM: current station's view of BSS, nested attribute
* 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_AFTER_LAST: internal
* @NL80211_STA_INFO_MAX: highest possible station info attribute
*/
@ -1317,6 +1318,7 @@ enum nl80211_sta_info {
NL80211_STA_INFO_SIGNAL_AVG,
NL80211_STA_INFO_RX_BITRATE,
NL80211_STA_INFO_BSS_PARAM,
NL80211_STA_INFO_CONNECTED_TIME,
/* keep last */
__NL80211_STA_INFO_AFTER_LAST,

4
include/net/cfg80211.h
View File

@ -423,6 +423,7 @@ struct station_parameters {
* @STATION_INFO_SIGNAL_AVG: @signal_avg filled
* @STATION_INFO_RX_BITRATE: @rxrate fields are filled
* @STATION_INFO_BSS_PARAM: @bss_param filled
* @STATION_INFO_CONNECTED_TIME: @connected_time filled
*/
enum station_info_flags {
STATION_INFO_INACTIVE_TIME = 1<<0,
@ -441,6 +442,7 @@ enum station_info_flags {
STATION_INFO_SIGNAL_AVG = 1<<13,
STATION_INFO_RX_BITRATE = 1<<14,
STATION_INFO_BSS_PARAM = 1<<15,
STATION_INFO_CONNECTED_TIME = 1<<16
};
/**
@ -511,6 +513,7 @@ struct sta_bss_parameters {
* Station information filled by driver for get_station() and dump_station.
*
* @filled: bitflag of flags from &enum station_info_flags
* @connected_time: time(in secs) since a station is last connected
* @inactive_time: time since last station activity (tx/rx) in milliseconds
* @rx_bytes: bytes received from this station
* @tx_bytes: bytes transmitted to this station
@ -533,6 +536,7 @@ struct sta_bss_parameters {
*/
struct station_info {
u32 filled;
u32 connected_time;
u32 inactive_time;
u32 rx_bytes;
u32 tx_bytes;

7
net/mac80211/cfg.c
View File

@ -330,6 +330,7 @@ static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, in
static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
{
struct ieee80211_sub_if_data *sdata = sta->sdata;
struct timespec uptime;
sinfo->generation = sdata->local->sta_generation;
@ -343,7 +344,11 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
STATION_INFO_TX_BITRATE |
STATION_INFO_RX_BITRATE |
STATION_INFO_RX_DROP_MISC |
STATION_INFO_BSS_PARAM;
STATION_INFO_BSS_PARAM |
STATION_INFO_CONNECTED_TIME;
do_posix_clock_monotonic_gettime(&uptime);
sinfo->connected_time = uptime.tv_sec - sta->last_connected;
sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
sinfo->rx_bytes = sta->rx_bytes;

26
net/mac80211/debugfs_sta.c
View File

@ -92,6 +92,31 @@ static ssize_t sta_inactive_ms_read(struct file *file, char __user *userbuf,
}
STA_OPS(inactive_ms);
static ssize_t sta_connected_time_read(struct file *file, char __user *userbuf,
size_t count, loff_t *ppos)
{
struct sta_info *sta = file->private_data;
struct timespec uptime;
struct tm result;
long connected_time_secs;
char buf[100];
int res;
do_posix_clock_monotonic_gettime(&uptime);
connected_time_secs = uptime.tv_sec - sta->last_connected;
time_to_tm(connected_time_secs, 0, &result);
result.tm_year -= 70;
result.tm_mday -= 1;
res = scnprintf(buf, sizeof(buf),
"years - %d\nmonths - %d\ndays - %d\nclock - %d:%d:%d\n\n",
result.tm_year, result.tm_mon, result.tm_mday,
result.tm_hour, result.tm_min, result.tm_sec);
return simple_read_from_buffer(userbuf, count, ppos, buf, res);
}
STA_OPS(connected_time);
static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf,
size_t count, loff_t *ppos)
{
@ -324,6 +349,7 @@ void ieee80211_sta_debugfs_add(struct sta_info *sta)
DEBUGFS_ADD(flags);
DEBUGFS_ADD(num_ps_buf_frames);
DEBUGFS_ADD(inactive_ms);
DEBUGFS_ADD(connected_time);
DEBUGFS_ADD(last_seq_ctrl);
DEBUGFS_ADD(agg_status);
DEBUGFS_ADD(dev);

3
net/mac80211/sta_info.c
View File

@ -228,6 +228,7 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
{
struct ieee80211_local *local = sdata->local;
struct sta_info *sta;
struct timespec uptime;
int i;
sta = kzalloc(sizeof(*sta) + local->hw.sta_data_size, gfp);
@ -245,6 +246,8 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
sta->sdata = sdata;
sta->last_rx = jiffies;
do_posix_clock_monotonic_gettime(&uptime);
sta->last_connected = uptime.tv_sec;
ewma_init(&sta->avg_signal, 1024, 8);
if (sta_prepare_rate_control(local, sta, gfp)) {

2
net/mac80211/sta_info.h
View File

@ -226,6 +226,7 @@ enum plink_state {
* @rx_bytes: Number of bytes received from this STA
* @wep_weak_iv_count: number of weak WEP IVs received from this station
* @last_rx: time (in jiffies) when last frame was received from this STA
* @last_connected: time (in seconds) when a station got connected
* @num_duplicates: number of duplicate frames received from this STA
* @rx_fragments: number of received MPDUs
* @rx_dropped: number of dropped MPDUs from this STA
@ -295,6 +296,7 @@ struct sta_info {
unsigned long rx_packets, rx_bytes;
unsigned long wep_weak_iv_count;
unsigned long last_rx;
long last_connected;
unsigned long num_duplicates;
unsigned long rx_fragments;
unsigned long rx_dropped;

3
net/wireless/nl80211.c
View File

@ -2020,6 +2020,9 @@ static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
if (!sinfoattr)
goto nla_put_failure;
if (sinfo->filled & STATION_INFO_CONNECTED_TIME)
NLA_PUT_U32(msg, NL80211_STA_INFO_CONNECTED_TIME,
sinfo->connected_time);
if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
sinfo->inactive_time);