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ipw2x00: age scan results on resume

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Scanned BSS entries are timestamped with jiffies, which doesn't
increment across suspend and hibernate.  On resume, every BSS in the
scan list looks like it was scanned within the last 10 seconds,
irregardless of how long the machine was actually asleep.  Age scan
results on resume with the time spent during sleep so userspace has a
clue how old they really are.

Signed-off-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Dan Williams
2009-02-11 13:26:06 -05:00
committed by John W. Linville
parent bc8263f1d8
commit c3d72b9681
8 changed files with 65 additions and 9 deletions
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15
drivers/net/wireless/ipw2x00/libipw_module.c
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@@ -105,6 +105,21 @@ static inline void ieee80211_networks_free(struct ieee80211_device *ieee)
ieee->networks = NULL;
}
void ieee80211_networks_age(struct ieee80211_device *ieee,
unsigned long age_secs)
{
struct ieee80211_network *network = NULL;
unsigned long flags;
unsigned long age_jiffies = msecs_to_jiffies(age_secs * MSEC_PER_SEC);
spin_lock_irqsave(&ieee->lock, flags);
list_for_each_entry(network, &ieee->network_list, list) {
network->last_scanned -= age_jiffies;
}
spin_unlock_irqrestore(&ieee->lock, flags);
}
EXPORT_SYMBOL(ieee80211_networks_age);
static void ieee80211_networks_initialize(struct ieee80211_device *ieee)
{
int i;