mac80211: reduce reliance on netdev

For bluetooth 3, we will most likely not have
a netdev for a virtual interface (sdata), so
prepare for that by reducing the reliance on
having a netdev. This patch moves the name
and address fields into the sdata struct and
uses them from there all over. Some work is
needed to keep them sync'ed, but that's not
a lot of work and in slow paths anyway.

In doing so, this also reduces the number of
pointer dereferences in many places, because
of things like sdata->dev->dev_addr becoming
sdata->vif.addr.

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

1 files changed, 5 insertions, 7 deletions

diff --git a/net/mac80211/driver-trace.h b/net/mac80211/driver-trace.h
index ee94ea0c67e9..7b155b947209 100644
--- a/net/mac80211/driver-trace.h
+++ b/net/mac80211/driver-trace.h
@@ -70,11 +70,10 @@ TRACE_EVENT(drv_stop,
 
 TRACE_EVENT(drv_add_interface,
         TP_PROTO(struct ieee80211_local *local,
-                 const u8 *addr,
                  struct ieee80211_vif *vif,
                  int ret),
 
-        TP_ARGS(local, addr, vif, ret),
+        TP_ARGS(local, vif, ret),
 
         TP_STRUCT__entry(
                 LOCAL_ENTRY
@@ -86,7 +85,7 @@ TRACE_EVENT(drv_add_interface,
         TP_fast_assign(
                 LOCAL_ASSIGN;
                 VIF_ASSIGN;
-                memcpy(__entry->addr, addr, 6);
+                memcpy(__entry->addr, vif->addr, 6);
                 __entry->ret = ret;
         ),
 
@@ -97,10 +96,9 @@ TRACE_EVENT(drv_add_interface,
 );
 
 TRACE_EVENT(drv_remove_interface,
-        TP_PROTO(struct ieee80211_local *local,
-                 const u8 *addr, struct ieee80211_vif *vif),
+        TP_PROTO(struct ieee80211_local *local, struct ieee80211_vif *vif),
 
-        TP_ARGS(local, addr, vif),
+        TP_ARGS(local, vif),
 
         TP_STRUCT__entry(
                 LOCAL_ENTRY
@@ -111,7 +109,7 @@ TRACE_EVENT(drv_remove_interface,
         TP_fast_assign(
                 LOCAL_ASSIGN;
                 VIF_ASSIGN;
-                memcpy(__entry->addr, addr, 6);
+                memcpy(__entry->addr, vif->addr, 6);
         ),
 
         TP_printk(