libipw: initiate cfg80211 API conversion (v2)

Initiate the conversion of libipw to the new cfg80211 configuration API.

For now, leave CONFIG_IPW2200_PROMISCUOUS stuff alone.  Eventually
migrate it to cfg80211 when the add/del/change_virtual_intf methods
are implemented.

(v2: Fix unconditional wiphy_unregister in libipw which was causing
     problems for ipw2100, somewhat based on prior attempted fix
     by Zhu Yi <yi.zhu@intel.com>.  Previously both original version of
     this patch and Zhu Yi's fix attempt were reverted due to
     discovery of regressions. -- JWL)

Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 35 insertions, 3 deletions

diff --git a/drivers/net/wireless/ipw2x00/libipw_module.c b/drivers/net/wireless/ipw2x00/libipw_module.c
index eb2b60834c17..e8a1ac5f8e11 100644
--- a/drivers/net/wireless/ipw2x00/libipw_module.c
+++ b/drivers/net/wireless/ipw2x00/libipw_module.c
@@ -62,6 +62,9 @@ MODULE_DESCRIPTION(DRV_DESCRIPTION);
 MODULE_AUTHOR(DRV_COPYRIGHT);
 MODULE_LICENSE("GPL");
 
+struct cfg80211_ops libipw_config_ops = { };
+void *libipw_wiphy_privid = &libipw_wiphy_privid;
+
 static int libipw_networks_allocate(struct libipw_device *ieee)
 {
         if (ieee->networks)
@@ -140,7 +143,7 @@ int libipw_change_mtu(struct net_device *dev, int new_mtu)
 }
 EXPORT_SYMBOL(libipw_change_mtu);
 
-struct net_device *alloc_ieee80211(int sizeof_priv)
+struct net_device *alloc_ieee80211(int sizeof_priv, int monitor)
 {
         struct libipw_device *ieee;
         struct net_device *dev;
@@ -157,10 +160,31 @@ struct net_device *alloc_ieee80211(int sizeof_priv)
 
         ieee->dev = dev;
 
+        if (!monitor) {
+                ieee->wdev.wiphy = wiphy_new(&libipw_config_ops, 0);
+                if (!ieee->wdev.wiphy) {
+                        LIBIPW_ERROR("Unable to allocate wiphy.\n");
+                        goto failed_free_netdev;
+                }
+
+                ieee->dev->ieee80211_ptr = &ieee->wdev;
+                ieee->wdev.iftype = NL80211_IFTYPE_STATION;
+
+                /* Fill-out wiphy structure bits we know...  Not enough info
+                   here to call set_wiphy_dev or set MAC address or channel info
+                   -- have to do that in ->ndo_init... */
+                ieee->wdev.wiphy->privid = libipw_wiphy_privid;
+
+                ieee->wdev.wiphy->max_scan_ssids = 1;
+                ieee->wdev.wiphy->max_scan_ie_len = 0;
+                ieee->wdev.wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
+                                                | BIT(NL80211_IFTYPE_ADHOC);
+        }
+
         err = libipw_networks_allocate(ieee);
         if (err) {
                 LIBIPW_ERROR("Unable to allocate beacon storage: %d\n", err);
-                goto failed_free_netdev;
+                goto failed_free_wiphy;
         }
         libipw_networks_initialize(ieee);
 
@@ -193,19 +217,27 @@ struct net_device *alloc_ieee80211(int sizeof_priv)
 
         return dev;
 
+failed_free_wiphy:
+        if (!monitor)
+                wiphy_free(ieee->wdev.wiphy);
 failed_free_netdev:
         free_netdev(dev);
 failed:
         return NULL;
 }
 
-void free_ieee80211(struct net_device *dev)
+void free_ieee80211(struct net_device *dev, int monitor)
 {
         struct libipw_device *ieee = netdev_priv(dev);
 
         lib80211_crypt_info_free(&ieee->crypt_info);
 
         libipw_networks_free(ieee);
+
+        /* free cfg80211 resources */
+        if (!monitor)
+                wiphy_free(ieee->wdev.wiphy);
+
         free_netdev(dev);
 }