diff options
| author | Kalle Valo <kalle.valo@nokia.com> | 2009-03-22 20:57:28 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-03-28 01:13:13 +0100 |
| commit | a08c1c1ac0c26229ca1ca45d554b209a56edc8be (patch) | |
| tree | b49e2968fae2612ced8a090a659309b1300fe7cb /net | |
| parent | mac80211: disable power save when scanning (diff) | |
| download | linux-a08c1c1ac0c26229ca1ca45d554b209a56edc8be.tar.xz linux-a08c1c1ac0c26229ca1ca45d554b209a56edc8be.zip | |
cfg80211: add feature to hold bss
In beacon filtering there needs to be a way to not expire the BSS even
when no beacons are received. Add an interface to cfg80211 to hold
BSS and make sure that it's not expired.
Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/wireless/core.h | 2 | ||||
| -rw-r--r-- | net/wireless/scan.c | 27 |
2 files changed, 28 insertions, 1 deletions
diff --git a/net/wireless/core.h b/net/wireless/core.h index 6acd483a61f8..97a6fd8b2b03 100644 --- a/net/wireless/core.h +++ b/net/wireless/core.h @@ -90,6 +90,8 @@ struct cfg80211_internal_bss { struct rb_node rbn; unsigned long ts; struct kref ref; + bool hold; + /* must be last because of priv member */ struct cfg80211_bss pub; }; diff --git a/net/wireless/scan.c b/net/wireless/scan.c index 280dbcd02c15..2a00e362f5fe 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -80,7 +80,8 @@ void cfg80211_bss_expire(struct cfg80211_registered_device *dev) bool expired = false; list_for_each_entry_safe(bss, tmp, &dev->bss_list, list) { - if (!time_after(jiffies, bss->ts + IEEE80211_SCAN_RESULT_EXPIRE)) + if (bss->hold || + !time_after(jiffies, bss->ts + IEEE80211_SCAN_RESULT_EXPIRE)) continue; list_del(&bss->list); rb_erase(&bss->rbn, &dev->bss_tree); @@ -471,6 +472,30 @@ void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *pub) } EXPORT_SYMBOL(cfg80211_unlink_bss); +void cfg80211_hold_bss(struct cfg80211_bss *pub) +{ + struct cfg80211_internal_bss *bss; + + if (!pub) + return; + + bss = container_of(pub, struct cfg80211_internal_bss, pub); + bss->hold = true; +} +EXPORT_SYMBOL(cfg80211_hold_bss); + +void cfg80211_unhold_bss(struct cfg80211_bss *pub) +{ + struct cfg80211_internal_bss *bss; + + if (!pub) + return; + + bss = container_of(pub, struct cfg80211_internal_bss, pub); + bss->hold = false; +} +EXPORT_SYMBOL(cfg80211_unhold_bss); + #ifdef CONFIG_WIRELESS_EXT int cfg80211_wext_siwscan(struct net_device *dev, struct iw_request_info *info, |