diff options
Diffstat (limited to 'net/wireless/scan.c')
-rw-r--r-- | net/wireless/scan.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/net/wireless/scan.c b/net/wireless/scan.c index 9119f5ce3677..d313c9befa23 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -2001,6 +2001,85 @@ void cfg80211_bss_iter(struct wiphy *wiphy, } EXPORT_SYMBOL(cfg80211_bss_iter); +void cfg80211_update_assoc_bss_entry(struct wireless_dev *wdev, + struct ieee80211_channel *chan) +{ + struct wiphy *wiphy = wdev->wiphy; + struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); + struct cfg80211_internal_bss *cbss = wdev->current_bss; + struct cfg80211_internal_bss *new = NULL; + struct cfg80211_internal_bss *bss; + struct cfg80211_bss *nontrans_bss; + struct cfg80211_bss *tmp; + + spin_lock_bh(&rdev->bss_lock); + + if (WARN_ON(cbss->pub.channel == chan)) + goto done; + + /* use transmitting bss */ + if (cbss->pub.transmitted_bss) + cbss = container_of(cbss->pub.transmitted_bss, + struct cfg80211_internal_bss, + pub); + + cbss->pub.channel = chan; + + list_for_each_entry(bss, &rdev->bss_list, list) { + if (!cfg80211_bss_type_match(bss->pub.capability, + bss->pub.channel->band, + wdev->conn_bss_type)) + continue; + + if (bss == cbss) + continue; + + if (!cmp_bss(&bss->pub, &cbss->pub, BSS_CMP_REGULAR)) { + new = bss; + break; + } + } + + if (new) { + /* to save time, update IEs for transmitting bss only */ + if (cfg80211_update_known_bss(rdev, cbss, new, false)) { + new->pub.proberesp_ies = NULL; + new->pub.beacon_ies = NULL; + } + + list_for_each_entry_safe(nontrans_bss, tmp, + &new->pub.nontrans_list, + nontrans_list) { + bss = container_of(nontrans_bss, + struct cfg80211_internal_bss, pub); + if (__cfg80211_unlink_bss(rdev, bss)) + rdev->bss_generation++; + } + + WARN_ON(atomic_read(&new->hold)); + if (!WARN_ON(!__cfg80211_unlink_bss(rdev, new))) + rdev->bss_generation++; + } + + rb_erase(&cbss->rbn, &rdev->bss_tree); + rb_insert_bss(rdev, cbss); + rdev->bss_generation++; + + list_for_each_entry_safe(nontrans_bss, tmp, + &cbss->pub.nontrans_list, + nontrans_list) { + bss = container_of(nontrans_bss, + struct cfg80211_internal_bss, pub); + bss->pub.channel = chan; + rb_erase(&bss->rbn, &rdev->bss_tree); + rb_insert_bss(rdev, bss); + rdev->bss_generation++; + } + +done: + spin_unlock_bh(&rdev->bss_lock); +} + #ifdef CONFIG_CFG80211_WEXT static struct cfg80211_registered_device * cfg80211_get_dev_from_ifindex(struct net *net, int ifindex) |