mac80211: give virtual interface to hw_scan

When scanning, it is somewhat important to scan
on the correct virtual interface. All drivers
that currently implement hw_scan only support a
single virtual interface, but that may change
and then we'd want to be ready.

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

10 files changed, 21 insertions, 10 deletions

diff --git a/drivers/net/wireless/at76c50x-usb.c b/drivers/net/wireless/at76c50x-usb.c
index 0fb419936dff..7a626d4e100f 100644
--- a/drivers/net/wireless/at76c50x-usb.c
+++ b/drivers/net/wireless/at76c50x-usb.c
@@ -1889,6 +1889,7 @@ static void at76_dwork_hw_scan(struct work_struct *work)
 }
 
 static int at76_hw_scan(struct ieee80211_hw *hw,
+                        struct ieee80211_vif *vif,
                         struct cfg80211_scan_request *req)
 {
         struct at76_priv *priv = hw->priv;
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.h b/drivers/net/wireless/iwlwifi/iwl-core.h
index a0cc11ecbe93..727360944859 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.h
+++ b/drivers/net/wireless/iwlwifi/iwl-core.h
@@ -512,7 +512,9 @@ static inline __le32 iwl_hw_set_rate_n_flags(u8 rate, u32 flags)
 void iwl_init_scan_params(struct iwl_priv *priv);
 int iwl_scan_cancel(struct iwl_priv *priv);
 int iwl_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms);
-int iwl_mac_hw_scan(struct ieee80211_hw *hw, struct cfg80211_scan_request *req);
+int iwl_mac_hw_scan(struct ieee80211_hw *hw,
+                    struct ieee80211_vif *vif,
+                    struct cfg80211_scan_request *req);
 void iwl_internal_short_hw_scan(struct iwl_priv *priv);
 int iwl_force_reset(struct iwl_priv *priv, int mode);
 u16 iwl_fill_probe_req(struct iwl_priv *priv, struct ieee80211_mgmt *frame,
diff --git a/drivers/net/wireless/iwlwifi/iwl-scan.c b/drivers/net/wireless/iwlwifi/iwl-scan.c
index 1bc1d29f2a07..447c3018296d 100644
--- a/drivers/net/wireless/iwlwifi/iwl-scan.c
+++ b/drivers/net/wireless/iwlwifi/iwl-scan.c
@@ -312,7 +312,8 @@ static int iwl_scan_initiate(struct iwl_priv *priv)
 }
 
 int iwl_mac_hw_scan(struct ieee80211_hw *hw,
-                     struct cfg80211_scan_request *req)
+                    struct ieee80211_vif *vif,
+                    struct cfg80211_scan_request *req)
 {
         struct iwl_priv *priv = hw->priv;
         int ret;
diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index 79bb8833ddb9..d016933d7573 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -973,6 +973,7 @@ static void hw_scan_done(struct work_struct *work)
 }
 
 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
+                                  struct ieee80211_vif *vif,
                                   struct cfg80211_scan_request *req)
 {
         struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
diff --git a/drivers/net/wireless/wl12xx/wl1251_main.c b/drivers/net/wireless/wl12xx/wl1251_main.c
index 390cee7e61a1..4d3be80c220e 100644
--- a/drivers/net/wireless/wl12xx/wl1251_main.c
+++ b/drivers/net/wireless/wl12xx/wl1251_main.c
@@ -856,6 +856,7 @@ out:
 }
 
 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
+                             struct ieee80211_vif *vif,
                              struct cfg80211_scan_request *req)
 {
         struct wl1251 *wl = hw->priv;
diff --git a/drivers/net/wireless/wl12xx/wl1271_main.c b/drivers/net/wireless/wl12xx/wl1271_main.c
index 283d5dade1ae..08ff6447dcd9 100644
--- a/drivers/net/wireless/wl12xx/wl1271_main.c
+++ b/drivers/net/wireless/wl12xx/wl1271_main.c
@@ -1523,6 +1523,7 @@ out:
 }
 
 static int wl1271_op_hw_scan(struct ieee80211_hw *hw,
+                             struct ieee80211_vif *vif,
                              struct cfg80211_scan_request *req)
 {
         struct wl1271 *wl = hw->priv;
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index c26de6cb12f8..a36e0df5a17c 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1657,7 +1657,7 @@ struct ieee80211_ops {
                                 struct ieee80211_key_conf *conf,
                                 struct ieee80211_sta *sta,
                                 u32 iv32, u16 *phase1key);
-        int (*hw_scan)(struct ieee80211_hw *hw,
+        int (*hw_scan)(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
                        struct cfg80211_scan_request *req);
         void (*sw_scan_start)(struct ieee80211_hw *hw);
         void (*sw_scan_complete)(struct ieee80211_hw *hw);
diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h
index d1f8a7c2225a..997008e236ff 100644
--- a/net/mac80211/driver-ops.h
+++ b/net/mac80211/driver-ops.h
@@ -154,14 +154,15 @@ static inline void drv_update_tkip_key(struct ieee80211_local *local,
 }
 
 static inline int drv_hw_scan(struct ieee80211_local *local,
+                              struct ieee80211_sub_if_data *sdata,
                               struct cfg80211_scan_request *req)
 {
         int ret;
 
         might_sleep();
 
-        ret = local->ops->hw_scan(&local->hw, req);
-        trace_drv_hw_scan(local, req, ret);
+        ret = local->ops->hw_scan(&local->hw, &sdata->vif, req);
+        trace_drv_hw_scan(local, sdata, req, ret);
         return ret;
 }
 
diff --git a/net/mac80211/driver-trace.h b/net/mac80211/driver-trace.h
index e209cb82ff29..ce734b58d07a 100644
--- a/net/mac80211/driver-trace.h
+++ b/net/mac80211/driver-trace.h
@@ -363,23 +363,26 @@ TRACE_EVENT(drv_update_tkip_key,
 
 TRACE_EVENT(drv_hw_scan,
         TP_PROTO(struct ieee80211_local *local,
+                 struct ieee80211_sub_if_data *sdata,
                  struct cfg80211_scan_request *req, int ret),
 
-        TP_ARGS(local, req, ret),
+        TP_ARGS(local, sdata, req, ret),
 
         TP_STRUCT__entry(
                 LOCAL_ENTRY
+                VIF_ENTRY
                 __field(int, ret)
         ),
 
         TP_fast_assign(
                 LOCAL_ASSIGN;
+                VIF_ASSIGN;
                 __entry->ret = ret;
         ),
 
         TP_printk(
-                LOCAL_PR_FMT " ret:%d",
-                LOCAL_PR_ARG, __entry->ret
+                LOCAL_PR_FMT VIF_PR_FMT " ret:%d",
+                LOCAL_PR_ARG,VIF_PR_ARG, __entry->ret
         )
 );
 
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index eb86a5f6e645..2b1f1f3d6a58 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -410,7 +410,7 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
 
         if (local->ops->hw_scan) {
                 WARN_ON(!ieee80211_prep_hw_scan(local));
-                rc = drv_hw_scan(local, local->hw_scan_req);
+                rc = drv_hw_scan(local, sdata, local->hw_scan_req);
         } else
                 rc = ieee80211_start_sw_scan(local);
 
@@ -654,7 +654,7 @@ void ieee80211_scan_work(struct work_struct *work)
         }
 
         if (local->hw_scan_req) {
-                int rc = drv_hw_scan(local, local->hw_scan_req);
+                int rc = drv_hw_scan(local, sdata, local->hw_scan_req);
                 mutex_unlock(&local->scan_mtx);
                 if (rc)
                         ieee80211_scan_completed(&local->hw, true);