[MAC80211]: add "invalid" interface type

Since I cannot convince the lazy driver authors (hello Michael)
to stop (ab)using the MGMT interface type internally in their
drivers, this patch introduces a new _INVALID type especially
for their use and changes all affected drivers to use it.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 files changed, 21 insertions, 9 deletions

diff --git a/drivers/net/wireless/adm8211.c b/drivers/net/wireless/adm8211.c
index e4fdadb52503..5bf7913aadda 100644
--- a/drivers/net/wireless/adm8211.c
+++ b/drivers/net/wireless/adm8211.c
@@ -1555,7 +1555,7 @@ static void adm8211_stop(struct ieee80211_hw *dev)
 {
         struct adm8211_priv *priv = dev->priv;
 
-        priv->mode = IEEE80211_IF_TYPE_MGMT;
+        priv->mode = IEEE80211_IF_TYPE_INVALID;
         priv->nar = 0;
         ADM8211_CSR_WRITE(NAR, 0);
         ADM8211_CSR_WRITE(IER, 0);
@@ -1898,7 +1898,7 @@ static int __devinit adm8211_probe(struct pci_dev *pdev,
         priv->tx_power = 0x40;
         priv->lpf_cutoff = 0xFF;
         priv->lnags_threshold = 0xFF;
-        priv->mode = IEEE80211_IF_TYPE_MGMT;
+        priv->mode = IEEE80211_IF_TYPE_INVALID;
 
         /* Power-on issue. EEPROM won't read correctly without */
         if (pdev->revision >= ADM8211_REV_BA) {
@@ -1993,7 +1993,7 @@ static int adm8211_suspend(struct pci_dev *pdev, pm_message_t state)
         struct ieee80211_hw *dev = pci_get_drvdata(pdev);
         struct adm8211_priv *priv = dev->priv;
 
-        if (priv->mode != IEEE80211_IF_TYPE_MGMT) {
+        if (priv->mode != IEEE80211_IF_TYPE_INVALID) {
                 ieee80211_stop_queues(dev);
                 adm8211_stop(dev);
         }
@@ -2011,7 +2011,7 @@ static int adm8211_resume(struct pci_dev *pdev)
         pci_set_power_state(pdev, PCI_D0);
         pci_restore_state(pdev);
 
-        if (priv->mode != IEEE80211_IF_TYPE_MGMT) {
+        if (priv->mode != IEEE80211_IF_TYPE_INVALID) {
                 adm8211_start(dev);
                 ieee80211_start_queues(dev);
         }
diff --git a/drivers/net/wireless/p54common.c b/drivers/net/wireless/p54common.c
index 9befd6cc7911..2c63cf0ad2cd 100644
--- a/drivers/net/wireless/p54common.c
+++ b/drivers/net/wireless/p54common.c
@@ -797,7 +797,7 @@ static void p54_stop(struct ieee80211_hw *dev)
                 kfree_skb(skb);
         }
         priv->stop(dev);
-        priv->mode = IEEE80211_IF_TYPE_MGMT;
+        priv->mode = IEEE80211_IF_TYPE_INVALID;
 }
 
 static int p54_add_interface(struct ieee80211_hw *dev,
@@ -949,7 +949,7 @@ struct ieee80211_hw *p54_init_common(size_t priv_data_len)
                 return NULL;
 
         priv = dev->priv;
-        priv->mode = IEEE80211_IF_TYPE_MGMT;
+        priv->mode = IEEE80211_IF_TYPE_INVALID;
         skb_queue_head_init(&priv->tx_queue);
         memcpy(priv->channels, p54_channels, sizeof(p54_channels));
         memcpy(priv->rates, p54_rates, sizeof(p54_rates));
diff --git a/drivers/net/wireless/p54pci.c b/drivers/net/wireless/p54pci.c
index 75927583f766..410b54387f23 100644
--- a/drivers/net/wireless/p54pci.c
+++ b/drivers/net/wireless/p54pci.c
@@ -640,7 +640,7 @@ static int p54p_suspend(struct pci_dev *pdev, pm_message_t state)
         struct ieee80211_hw *dev = pci_get_drvdata(pdev);
         struct p54p_priv *priv = dev->priv;
 
-        if (priv->common.mode != IEEE80211_IF_TYPE_MGMT) {
+        if (priv->common.mode != IEEE80211_IF_TYPE_INVALID) {
                 ieee80211_stop_queues(dev);
                 p54p_stop(dev);
         }
@@ -658,7 +658,7 @@ static int p54p_resume(struct pci_dev *pdev)
         pci_set_power_state(pdev, PCI_D0);
         pci_restore_state(pdev);
 
-        if (priv->common.mode != IEEE80211_IF_TYPE_MGMT) {
+        if (priv->common.mode != IEEE80211_IF_TYPE_INVALID) {
                 p54p_open(dev);
                 ieee80211_start_queues(dev);
         }
diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h
index 511c11c4edda..6262d4e47c56 100644
--- a/drivers/net/wireless/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/rt2x00/rt2x00.h
@@ -297,7 +297,7 @@ struct interface {
          * When set to INVALID_INTERFACE, no interface is configured.
          */
         int type;
-#define INVALID_INTERFACE       IEEE80211_IF_TYPE_MGMT
+#define INVALID_INTERFACE       IEEE80211_IF_TYPE_INVALID
 
         /*
          * MAC of the device.
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 6ec12bd3a3ec..bd72f59e98fd 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -457,6 +457,8 @@ struct ieee80211_conf {
 /**
  * enum ieee80211_if_types - types of 802.11 network interfaces
  *
+ * @IEEE80211_IF_TYPE_INVALID: invalid interface type, not used
+ *      by mac80211 itself
  * @IEEE80211_IF_TYPE_AP: interface in AP mode.
  * @IEEE80211_IF_TYPE_MGMT: special interface for communication with hostap
  *      daemon. Drivers should never see this type.
@@ -468,6 +470,7 @@ struct ieee80211_conf {
  *      will never see this type.
  */
 enum ieee80211_if_types {
+        IEEE80211_IF_TYPE_INVALID,
         IEEE80211_IF_TYPE_AP,
         IEEE80211_IF_TYPE_MGMT,
         IEEE80211_IF_TYPE_STA,
diff --git a/net/mac80211/ieee80211.c b/net/mac80211/ieee80211.c
index 62877a8f9f0f..373e8b728782 100644
--- a/net/mac80211/ieee80211.c
+++ b/net/mac80211/ieee80211.c
@@ -351,6 +351,10 @@ static int ieee80211_open(struct net_device *dev)
         case IEEE80211_IF_TYPE_IBSS:
                 /* no special treatment */
                 break;
+        case IEEE80211_IF_TYPE_INVALID:
+                /* cannot happen */
+                WARN_ON(1);
+                break;
         }
 
         if (local->open_count == 0) {
diff --git a/net/mac80211/ieee80211_iface.c b/net/mac80211/ieee80211_iface.c
index 08c1e188d4b8..ef618e947e2b 100644
--- a/net/mac80211/ieee80211_iface.c
+++ b/net/mac80211/ieee80211_iface.c
@@ -243,6 +243,10 @@ void ieee80211_if_reinit(struct net_device *dev)
         ieee80211_if_sdata_deinit(sdata);
 
         switch (sdata->type) {
+        case IEEE80211_IF_TYPE_INVALID:
+                /* cannot happen */
+                WARN_ON(1);
+                break;
         case IEEE80211_IF_TYPE_MGMT:
                 /* nothing to do */
                 break;
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 03635fb3e9b6..b4a62fe3ccbd 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1453,6 +1453,7 @@ static int prepare_for_handlers(struct ieee80211_sub_if_data *sdata,
         case IEEE80211_IF_TYPE_MNTR:
                 /* take everything */
                 break;
+        case IEEE80211_IF_TYPE_INVALID:
         case IEEE80211_IF_TYPE_MGMT:
                 /* should never get here */
                 WARN_ON(1);