From 9d139c810a2aa17365cc548d0cd2a189d8433c65 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 9 Jul 2008 14:40:37 +0200 Subject: mac80211: revamp beacon configuration This patch changes mac80211's beacon configuration handling to never pass skbs to the driver directly but rather always require the driver to use ieee80211_beacon_get(). Additionally, it introduces "change flags" on the config_interface() call to enable drivers to figure out what is changing. Finally, it removes the beacon_update() driver callback in favour of having IBSS beacon delivered by ieee80211_beacon_get() as well. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- drivers/net/wireless/b43/main.c | 48 +++++++++++++++++------------------------ 1 file changed, 20 insertions(+), 28 deletions(-) (limited to 'drivers/net/wireless/b43') diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c index 9d2eb273b72..381dbd33dfc 100644 --- a/drivers/net/wireless/b43/main.c +++ b/drivers/net/wireless/b43/main.c @@ -1675,14 +1675,24 @@ static void b43_beacon_update_trigger_work(struct work_struct *work) /* Asynchronously update the packet templates in template RAM. * Locking: Requires wl->irq_lock to be locked. */ -static void b43_update_templates(struct b43_wl *wl, struct sk_buff *beacon) +static void b43_update_templates(struct b43_wl *wl) { + struct sk_buff *beacon; + /* This is the top half of the ansynchronous beacon update. * The bottom half is the beacon IRQ. * Beacon update must be asynchronous to avoid sending an * invalid beacon. This can happen for example, if the firmware * transmits a beacon while we are updating it. */ + /* We could modify the existing beacon and set the aid bit in + * the TIM field, but that would probably require resizing and + * moving of data within the beacon template. + * Simply request a new beacon and let mac80211 do the hard work. */ + beacon = ieee80211_beacon_get(wl->hw, wl->vif); + if (unlikely(!beacon)) + return; + if (wl->current_beacon) dev_kfree_skb_any(wl->current_beacon); wl->current_beacon = beacon; @@ -3645,10 +3655,14 @@ static int b43_op_config_interface(struct ieee80211_hw *hw, if (b43_status(dev) >= B43_STAT_INITIALIZED) { if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP) || b43_is_mode(wl, IEEE80211_IF_TYPE_MESH_POINT)) { - B43_WARN_ON(conf->type != wl->if_type); - b43_set_ssid(dev, conf->ssid, conf->ssid_len); - if (conf->beacon) - b43_update_templates(wl, conf->beacon); + B43_WARN_ON(vif->type != wl->if_type); + if (conf->changed & IEEE80211_IFCC_SSID) + b43_set_ssid(dev, conf->ssid, conf->ssid_len); + if (conf->changed & IEEE80211_IFCC_BEACON) + b43_update_templates(wl); + } else if (b43_is_mode(wl, IEEE80211_IF_TYPE_IBSS)) { + if (conf->changed & IEEE80211_IFCC_BEACON) + b43_update_templates(wl); } b43_write_mac_bssid_templates(dev); } @@ -4334,33 +4348,12 @@ out_unlock: } static int b43_op_beacon_set_tim(struct ieee80211_hw *hw, int aid, int set) -{ - struct b43_wl *wl = hw_to_b43_wl(hw); - struct sk_buff *beacon; - unsigned long flags; - - /* We could modify the existing beacon and set the aid bit in - * the TIM field, but that would probably require resizing and - * moving of data within the beacon template. - * Simply request a new beacon and let mac80211 do the hard work. */ - beacon = ieee80211_beacon_get(hw, wl->vif); - if (unlikely(!beacon)) - return -ENOMEM; - spin_lock_irqsave(&wl->irq_lock, flags); - b43_update_templates(wl, beacon); - spin_unlock_irqrestore(&wl->irq_lock, flags); - - return 0; -} - -static int b43_op_ibss_beacon_update(struct ieee80211_hw *hw, - struct sk_buff *beacon) { struct b43_wl *wl = hw_to_b43_wl(hw); unsigned long flags; spin_lock_irqsave(&wl->irq_lock, flags); - b43_update_templates(wl, beacon); + b43_update_templates(wl); spin_unlock_irqrestore(&wl->irq_lock, flags); return 0; @@ -4391,7 +4384,6 @@ static const struct ieee80211_ops b43_hw_ops = { .stop = b43_op_stop, .set_retry_limit = b43_op_set_retry_limit, .set_tim = b43_op_beacon_set_tim, - .beacon_update = b43_op_ibss_beacon_update, .sta_notify = b43_op_sta_notify, }; -- cgit v1.2.3-70-g09d2