bridge: use rx_handler_data pointer to store net_bridge_port pointer

Register net_bridge_port pointer as rx_handler data pointer. As br_port is
removed from struct net_device, another netdev priv_flag is added to indicate
the device serves as a bridge port. Also rcuized pointers are now correctly
dereferenced in br_fdb.c and in netfilter parts.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 3 insertions, 3 deletions

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 90ab3c8519be..3a7b8a2f2d5a 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -1107,7 +1107,7 @@ static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
                                enum nl80211_iftype iftype)
 {
         if (!use_4addr) {
-                if (netdev && netdev->br_port)
+                if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
                         return -EBUSY;
                 return 0;
         }
diff --git a/net/wireless/util.c b/net/wireless/util.c
index 3416373a9c0c..0c8a1e8b7690 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -770,8 +770,8 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
                 return -EOPNOTSUPP;
 
         /* if it's part of a bridge, reject changing type to station/ibss */
-        if (dev->br_port && (ntype == NL80211_IFTYPE_ADHOC ||
-                             ntype == NL80211_IFTYPE_STATION))
+        if ((dev->priv_flags & IFF_BRIDGE_PORT) &&
+            (ntype == NL80211_IFTYPE_ADHOC || ntype == NL80211_IFTYPE_STATION))
                 return -EBUSY;
 
         if (ntype != otype) {