From a08c1c1ac0c26229ca1ca45d554b209a56edc8be Mon Sep 17 00:00:00 2001 From: Kalle Valo Date: Sun, 22 Mar 2009 21:57:28 +0200 Subject: 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 Signed-off-by: John W. Linville --- net/wireless/scan.c | 27 ++++++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-) (limited to 'net/wireless/scan.c') 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, -- cgit v1.2.2