Revert "mac80211: refactor virtual monitor code"

This reverts commit 870d37fc22f3e40f9f23e06c581c8538fc16a2f0.

This code doesn't work as cfg80211 will call
set_monitor_enabled at the wrong time and it
doesn't seem to be possible to fix this.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index cfdc03f..e95f24e 100644 (file)
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -2982,16 +2982,6 @@ static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
        return 0;
 }
 
-static void ieee80211_set_monitor_enabled(struct wiphy *wiphy, bool enabled)
-{
-       struct ieee80211_local *local = wiphy_priv(wiphy);
-
-       if (enabled)
-               WARN_ON(ieee80211_add_virtual_monitor(local));
-       else
-               ieee80211_del_virtual_monitor(local);
-}
-
 #ifdef CONFIG_PM
 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
 {
@@ -3066,7 +3056,6 @@ struct cfg80211_ops mac80211_config_ops = {
        .tdls_mgmt = ieee80211_tdls_mgmt,
        .probe_client = ieee80211_probe_client,
        .set_noack_map = ieee80211_set_noack_map,
-       .set_monitor_enabled = ieee80211_set_monitor_enabled,
 #ifdef CONFIG_PM
        .set_wakeup = ieee80211_set_wakeup,
 #endif

diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 7998513..bb61f77 100644 (file)
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1491,10 +1491,6 @@ int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
                                struct sk_buff *skb, bool need_basic);
 
-/* virtual monitor */
-int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
-void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
-
 /* channel management */
 enum ieee80211_chan_mode {
        CHAN_MODE_UNDEFINED,

diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 334ee0f..bfb57dc 100644 (file)
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -331,7 +331,7 @@ static void ieee80211_set_default_queues(struct ieee80211_sub_if_data *sdata)
        sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE;
 }
 
-int ieee80211_add_virtual_monitor(struct ieee80211_local *local)
+static int ieee80211_add_virtual_monitor(struct ieee80211_local *local)
 {
        struct ieee80211_sub_if_data *sdata;
        int ret = 0;
@@ -377,7 +377,7 @@ int ieee80211_add_virtual_monitor(struct ieee80211_local *local)
        return ret;
 }
 
-void ieee80211_del_virtual_monitor(struct ieee80211_local *local)
+static void ieee80211_del_virtual_monitor(struct ieee80211_local *local)
 {
        struct ieee80211_sub_if_data *sdata;
 
@@ -497,6 +497,12 @@ static int ieee80211_do_open(struct net_device *dev, bool coming_up)
                        break;
                }
 
+               if (local->monitors == 0 && local->open_count == 0) {
+                       res = ieee80211_add_virtual_monitor(local);
+                       if (res)
+                               goto err_stop;
+               }
+
                /* must be before the call to ieee80211_configure_filter */
                local->monitors++;
                if (local->monitors == 1) {
@@ -511,6 +517,8 @@ static int ieee80211_do_open(struct net_device *dev, bool coming_up)
                break;
        default:
                if (coming_up) {
+                       ieee80211_del_virtual_monitor(local);
+
                        res = drv_add_interface(local, sdata);
                        if (res)
                                goto err_stop;
@@ -745,6 +753,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
                if (local->monitors == 0) {
                        local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR;
                        hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR;
+                       ieee80211_del_virtual_monitor(local);
                }
 
                ieee80211_adjust_monitor_flags(sdata, -1);
@@ -818,6 +827,9 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
                }
        }
        spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
+
+       if (local->monitors == local->open_count && local->monitors > 0)
+               ieee80211_add_virtual_monitor(local);
 }
 
 static int ieee80211_stop(struct net_device *dev)