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mac80211: use ktime_get_seconds

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The mac80211 code uses ktime_get_ts to measure the connected time.
As this uses monotonic time, it is y2038 safe on 32-bit systems,
but we still want to deprecate the use of 'timespec' because most
other users are broken.

This changes the code to use ktime_get_seconds() instead, which
avoids the timespec structure and is slightly more efficient.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: linux-wireless@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnd Bergmann 2015-09-30 13:26:36 +02:00 committed by David S. Miller
parent 52f4f91893
commit 84b00607ae
1 changed files with 2 additions and 6 deletions
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8
net/mac80211/sta_info.c
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@ -303,7 +303,6 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
struct ieee80211_local *local = sdata->local;
struct ieee80211_hw *hw = &local->hw;
struct sta_info *sta;
struct timespec uptime;
int i;
sta = kzalloc(sizeof(*sta) + hw->sta_data_size, gfp);
@ -339,8 +338,7 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
/* Mark TID as unreserved */
sta->reserved_tid = IEEE80211_TID_UNRESERVED;
ktime_get_ts(&uptime);
sta->last_connected = uptime.tv_sec;
sta->last_connected = ktime_get_seconds();
ewma_signal_init(&sta->avg_signal);
for (i = 0; i < ARRAY_SIZE(sta->chain_signal_avg); i++)
ewma_signal_init(&sta->chain_signal_avg[i]);
@ -1813,7 +1811,6 @@ void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
struct ieee80211_sub_if_data *sdata = sta->sdata;
struct ieee80211_local *local = sdata->local;
struct rate_control_ref *ref = NULL;
struct timespec uptime;
u32 thr = 0;
int i, ac;
@ -1838,8 +1835,7 @@ void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
BIT(NL80211_STA_INFO_RX_DROP_MISC) |
BIT(NL80211_STA_INFO_BEACON_LOSS);
ktime_get_ts(&uptime);
sinfo->connected_time = uptime.tv_sec - sta->last_connected;
sinfo->connected_time = ktime_get_seconds() - sta->last_connected;
sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
if (!(sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES64) |