diff options
| -rw-r--r-- | net/wireless/core.h | 3 | ||||
| -rw-r--r-- | net/wireless/scan.c | 25 | ||||
| -rw-r--r-- | net/wireless/sysfs.c | 7 |
3 files changed, 33 insertions, 2 deletions
diff --git a/net/wireless/core.h b/net/wireless/core.h index e29ad4cd464..5d0c682d737 100644 --- a/net/wireless/core.h +++ b/net/wireless/core.h @@ -49,6 +49,7 @@ struct cfg80211_registered_device { struct rb_root bss_tree; u32 bss_generation; struct cfg80211_scan_request *scan_req; /* protected by RTNL */ + unsigned long suspend_at; /* must be last because of the way we do wiphy_priv(), * and it should at least be aligned to NETDEV_ALIGN */ @@ -113,5 +114,7 @@ void ieee80211_set_bitrate_flags(struct wiphy *wiphy); void wiphy_update_regulatory(struct wiphy *wiphy, enum reg_set_by setby); void cfg80211_bss_expire(struct cfg80211_registered_device *dev); +void cfg80211_bss_age(struct cfg80211_registered_device *dev, + unsigned long age_secs); #endif /* __NET_WIRELESS_CORE_H */ diff --git a/net/wireless/scan.c b/net/wireless/scan.c index b1893c863b9..9fad1631d6c 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -62,6 +62,18 @@ static void bss_release(struct kref *ref) } /* must hold dev->bss_lock! */ +void cfg80211_bss_age(struct cfg80211_registered_device *dev, + unsigned long age_secs) +{ + struct cfg80211_internal_bss *bss; + unsigned long age_jiffies = msecs_to_jiffies(age_secs * MSEC_PER_SEC); + + list_for_each_entry(bss, &dev->bss_list, list) { + bss->ts -= age_jiffies; + } +} + +/* must hold dev->bss_lock! */ void cfg80211_bss_expire(struct cfg80211_registered_device *dev) { struct cfg80211_internal_bss *bss, *tmp; @@ -584,6 +596,15 @@ static void ieee80211_scan_add_ies(struct iw_request_info *info, } } +static inline unsigned int elapsed_jiffies_msecs(unsigned long start) +{ + unsigned long end = jiffies; + + if (end >= start) + return jiffies_to_msecs(end - start); + + return jiffies_to_msecs(end + (MAX_JIFFY_OFFSET - start) + 1); +} static char * ieee80211_bss(struct iw_request_info *info, @@ -763,8 +784,8 @@ ieee80211_bss(struct iw_request_info *info, &iwe, buf); memset(&iwe, 0, sizeof(iwe)); iwe.cmd = IWEVCUSTOM; - sprintf(buf, " Last beacon: %dms ago", - jiffies_to_msecs(jiffies - bss->ts)); + sprintf(buf, " Last beacon: %ums ago", + elapsed_jiffies_msecs(bss->ts)); iwe.u.data.length = strlen(buf); current_ev = iwe_stream_add_point(info, current_ev, end_buf, &iwe, buf); diff --git a/net/wireless/sysfs.c b/net/wireless/sysfs.c index 26a72b0797a..15feaeb5ced 100644 --- a/net/wireless/sysfs.c +++ b/net/wireless/sysfs.c @@ -60,6 +60,8 @@ static int wiphy_suspend(struct device *dev, pm_message_t state) struct cfg80211_registered_device *rdev = dev_to_rdev(dev); int ret = 0; + rdev->suspend_at = get_seconds(); + if (rdev->ops->suspend) { rtnl_lock(); ret = rdev->ops->suspend(&rdev->wiphy); @@ -74,6 +76,11 @@ static int wiphy_resume(struct device *dev) struct cfg80211_registered_device *rdev = dev_to_rdev(dev); int ret = 0; + /* Age scan results with time spent in suspend */ + spin_lock_bh(&rdev->bss_lock); + cfg80211_bss_age(rdev, get_seconds() - rdev->suspend_at); + spin_unlock_bh(&rdev->bss_lock); + if (rdev->ops->resume) { rtnl_lock(); ret = rdev->ops->resume(&rdev->wiphy); |