mac80211: make bridge_packets a virtual interface option

The bridge_packets configuration really should be per virtual
interface (theoretically per AP/VLAN, but this is much easier);
there currently is no way to set it yet though. Also invert
the option to "NO_BRIDGE_PACKETS" so the default is to bridge.

While at it, also document the flags properly.

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

4 files changed, 22 insertions, 18 deletions

diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c
index ee509f1109e2..24ce54463310 100644
--- a/net/mac80211/debugfs.c
+++ b/net/mac80211/debugfs.c
@@ -51,8 +51,6 @@ DEBUGFS_READONLY_FILE(antenna_sel_tx, 20, "%d",
                       local->hw.conf.antenna_sel_tx);
 DEBUGFS_READONLY_FILE(antenna_sel_rx, 20, "%d",
                       local->hw.conf.antenna_sel_rx);
-DEBUGFS_READONLY_FILE(bridge_packets, 20, "%d",
-                      local->bridge_packets);
 DEBUGFS_READONLY_FILE(rts_threshold, 20, "%d",
                       local->rts_threshold);
 DEBUGFS_READONLY_FILE(fragmentation_threshold, 20, "%d",
@@ -206,7 +204,6 @@ void debugfs_hw_add(struct ieee80211_local *local)
         DEBUGFS_ADD(frequency);
         DEBUGFS_ADD(antenna_sel_tx);
         DEBUGFS_ADD(antenna_sel_rx);
-        DEBUGFS_ADD(bridge_packets);
         DEBUGFS_ADD(rts_threshold);
         DEBUGFS_ADD(fragmentation_threshold);
         DEBUGFS_ADD(short_retry_limit);
@@ -263,7 +260,6 @@ void debugfs_hw_del(struct ieee80211_local *local)
         DEBUGFS_DEL(frequency);
         DEBUGFS_DEL(antenna_sel_tx);
         DEBUGFS_DEL(antenna_sel_rx);
-        DEBUGFS_DEL(bridge_packets);
         DEBUGFS_DEL(rts_threshold);
         DEBUGFS_DEL(fragmentation_threshold);
         DEBUGFS_DEL(short_retry_limit);
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 199d64143b41..52f36ab1ee57 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -402,11 +402,25 @@ struct ieee80211_if_mesh {
         do { } while (0)
 #endif
 
-/* flags used in struct ieee80211_sub_if_data.flags */
-#define IEEE80211_SDATA_ALLMULTI        BIT(0)
-#define IEEE80211_SDATA_PROMISC         BIT(1)
-#define IEEE80211_SDATA_USERSPACE_MLME  BIT(2)
-#define IEEE80211_SDATA_OPERATING_GMODE BIT(3)
+/**
+ * enum ieee80211_sub_if_data_flags - virtual interface flags
+ *
+ * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
+ * @IEEE80211_SDATA_PROMISC: interface is promisc
+ * @IEEE80211_SDATA_USERSPACE_MLME: userspace MLME is active
+ * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
+ * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
+ *      associated stations and deliver multicast frames both
+ *      back to wireless media and to the local net stack.
+ */
+enum ieee80211_sub_if_data_flags {
+        IEEE80211_SDATA_ALLMULTI                = BIT(0),
+        IEEE80211_SDATA_PROMISC                 = BIT(1),
+        IEEE80211_SDATA_USERSPACE_MLME          = BIT(2),
+        IEEE80211_SDATA_OPERATING_GMODE         = BIT(3),
+        IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(4),
+};
+
 struct ieee80211_sub_if_data {
         struct list_head list;
 
@@ -635,10 +649,6 @@ struct ieee80211_local {
         struct crypto_blkcipher *wep_rx_tfm;
         u32 wep_iv;
 
-        int bridge_packets; /* bridge packets between associated stations and
-                             * deliver multicast frames both back to wireless
-                             * media and to the local net stack */
-
         struct list_head interfaces;
 
         /*
@@ -726,7 +736,6 @@ struct ieee80211_local {
                 struct dentry *frequency;
                 struct dentry *antenna_sel_tx;
                 struct dentry *antenna_sel_rx;
-                struct dentry *bridge_packets;
                 struct dentry *rts_threshold;
                 struct dentry *fragmentation_threshold;
                 struct dentry *short_retry_limit;
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 4bfac4b41c51..72e3f5574e9f 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -1280,8 +1280,6 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
 
         local->hw.queues = 1; /* default */
 
-        local->bridge_packets = 1;
-
         local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
         local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
         local->short_retry_limit = 7;
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 208563a27bc4..93f2cda9926e 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1221,8 +1221,9 @@ ieee80211_deliver_skb(struct ieee80211_rx_data *rx)
         skb = rx->skb;
         xmit_skb = NULL;
 
-        if (local->bridge_packets && (sdata->vif.type == IEEE80211_IF_TYPE_AP ||
-                                      sdata->vif.type == IEEE80211_IF_TYPE_VLAN) &&
+        if ((sdata->vif.type == IEEE80211_IF_TYPE_AP ||
+             sdata->vif.type == IEEE80211_IF_TYPE_VLAN) &&
+            !(sdata->flags & IEEE80211_SDATA_DONT_BRIDGE_PACKETS) &&
             (rx->flags & IEEE80211_RX_RA_MATCH)) {
                 if (is_multicast_ether_addr(ehdr->h_dest)) {
                         /*