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 <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index 9d2eb27..381dbd3 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -1675,14 +1675,24 @@
/* 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 @@
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);
}
@@ -4336,31 +4350,10 @@
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 @@
.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,
};