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, 7 insertions, 7 deletions

diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index d09f78bb244..d45760eae6c 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -469,7 +469,7 @@ void ieee80211_iterate_active_interfaces(
                         break;
                 }
                 if (netif_running(sdata->dev))
-                        iterator(data, sdata->dev->dev_addr,
+                        iterator(data, sdata->vif.addr,
                                  &sdata->vif);
         }
 
@@ -503,7 +503,7 @@ void ieee80211_iterate_active_interfaces_atomic(
                         break;
                 }
                 if (netif_running(sdata->dev))
-                        iterator(data, sdata->dev->dev_addr,
+                        iterator(data, sdata->vif.addr,
                                  &sdata->vif);
         }
 
@@ -848,7 +848,7 @@ void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
                             sizeof(*mgmt) + 6 + extra_len);
         if (!skb) {
                 printk(KERN_DEBUG "%s: failed to allocate buffer for auth "
-                       "frame\n", sdata->dev->name);
+                       "frame\n", sdata->name);
                 return;
         }
         skb_reserve(skb, local->hw.extra_tx_headroom);
@@ -858,7 +858,7 @@ void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
                                           IEEE80211_STYPE_AUTH);
         memcpy(mgmt->da, bssid, ETH_ALEN);
-        memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
+        memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
         memcpy(mgmt->bssid, bssid, ETH_ALEN);
         mgmt->u.auth.auth_alg = cpu_to_le16(auth_alg);
         mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
@@ -949,7 +949,7 @@ void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
                             ie_len);
         if (!skb) {
                 printk(KERN_DEBUG "%s: failed to allocate buffer for probe "
-                       "request\n", sdata->dev->name);
+                       "request\n", sdata->name);
                 return;
         }
         skb_reserve(skb, local->hw.extra_tx_headroom);
@@ -958,7 +958,7 @@ void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
         memset(mgmt, 0, 24);
         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
                                           IEEE80211_STYPE_PROBE_REQ);
-        memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
+        memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
         if (dst) {
                 memcpy(mgmt->da, dst, ETH_ALEN);
                 memcpy(mgmt->bssid, dst, ETH_ALEN);
@@ -1051,7 +1051,7 @@ int ieee80211_reconfig(struct ieee80211_local *local)
                     netif_running(sdata->dev)) {
                         conf.vif = &sdata->vif;
                         conf.type = sdata->vif.type;
-                        conf.mac_addr = sdata->dev->dev_addr;
+                        conf.mac_addr = sdata->vif.addr;
                         res = drv_add_interface(local, &conf);
                 }
         }