iwlwifi : Set monitor mode for 3945

The patch leverages mac80211 configure_filter to enable iwl3945
monitor mode.

Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 36 insertions, 1 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.h b/drivers/net/wireless/iwlwifi/iwl-3945.h
index fb96c62ad0ff..9fdc1405e853 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945.h
+++ b/drivers/net/wireless/iwlwifi/iwl-3945.h
@@ -886,6 +886,7 @@ struct iwl3945_priv {
         struct work_struct report_work;
         struct work_struct request_scan;
         struct work_struct beacon_update;
+        struct work_struct set_monitor;
 
         struct tasklet_struct irq_tasklet;
 
diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c
index 7040cde8bc28..f021eba41e6a 100644
--- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c
@@ -6144,6 +6144,24 @@ static void iwl3945_bg_rf_kill(struct work_struct *work)
         mutex_unlock(&priv->mutex);
 }
 
+static void iwl3945_bg_set_monitor(struct work_struct *work)
+{
+        struct iwl3945_priv *priv = container_of(work,
+                                struct iwl3945_priv, set_monitor);
+
+        IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
+
+        mutex_lock(&priv->mutex);
+
+        if (!iwl3945_is_ready(priv))
+                IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
+        else
+                if (iwl3945_set_mode(priv, IEEE80211_IF_TYPE_MNTR) != 0)
+                        IWL_ERROR("iwl3945_set_mode() failed\n");
+
+        mutex_unlock(&priv->mutex);
+}
+
 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
 
 static void iwl3945_bg_scan_check(struct work_struct *data)
@@ -6996,7 +7014,22 @@ static void iwl3945_configure_filter(struct ieee80211_hw *hw,
          * XXX: dummy
          * see also iwl3945_connection_init_rx_config
          */
-        *total_flags = 0;
+        struct iwl3945_priv *priv = hw->priv;
+        int new_flags = 0;
+        if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
+                if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
+                        IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
+                                           IEEE80211_IF_TYPE_MNTR,
+                                           changed_flags, *total_flags);
+                        /* queue work 'cuz mac80211 is holding a lock which
+                         * prevents us from issuing (synchronous) f/w cmds */
+                        queue_work(priv->workqueue, &priv->set_monitor);
+                        new_flags &= FIF_PROMISC_IN_BSS |
+                                     FIF_OTHER_BSS |
+                                     FIF_ALLMULTI;
+                }
+        }
+        *total_flags = new_flags;
 }
 
 static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
@@ -7872,6 +7905,7 @@ static void iwl3945_setup_deferred_work(struct iwl3945_priv *priv)
         INIT_WORK(&priv->abort_scan, iwl3945_bg_abort_scan);
         INIT_WORK(&priv->rf_kill, iwl3945_bg_rf_kill);
         INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
+        INIT_WORK(&priv->set_monitor, iwl3945_bg_set_monitor);
         INIT_DELAYED_WORK(&priv->post_associate, iwl3945_bg_post_associate);
         INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
         INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);