[PATCH] libertas: make scan result handling more flexible

- use a linked list for scan results
- age scan results
- pass bss_descriptors around instead of indexes into the scan table
- lock access to the scan results
- stop returning EAGAIN from SIOCGIWSCAN handler

Signed-off-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 14 insertions, 7 deletions

diff --git a/drivers/net/wireless/libertas/scan.h b/drivers/net/wireless/libertas/scan.h
index 4fe8610d8003..74270785063b 100644
--- a/drivers/net/wireless/libertas/scan.h
+++ b/drivers/net/wireless/libertas/scan.h
@@ -156,9 +156,9 @@ struct bss_descriptor {
         u8 mode;
         u8 libertas_supported_rates[WLAN_SUPPORTED_RATES];
 
-        int extra_ie;
-
         u8 timestamp[8];        //!< TSF value included in the beacon/probe response
+        unsigned long last_scanned;
+
         union ieeetypes_phyparamset phyparamset;
         union IEEEtypes_ssparamset ssparamset;
         struct ieeetypes_capinfo cap;
@@ -172,14 +172,21 @@ struct bss_descriptor {
         size_t wpa_ie_len;
         u8 rsn_ie[MAX_WPA_IE_LEN];
         size_t rsn_ie_len;
+
+        struct list_head list;
 };
 
 extern int libertas_SSID_cmp(struct WLAN_802_11_SSID *ssid1,
-                   struct WLAN_802_11_SSID *ssid2);
-extern int libertas_find_SSID_in_list(wlan_adapter * adapter, struct WLAN_802_11_SSID *ssid,
-                          u8 * bssid, u8 mode);
-int libertas_find_best_SSID_in_list(wlan_adapter * adapter, u8 mode);
-extern int libertas_find_BSSID_in_list(wlan_adapter * adapter, u8 * bssid, u8 mode);
+                        struct WLAN_802_11_SSID *ssid2);
+
+struct bss_descriptor * libertas_find_SSID_in_list(wlan_adapter * adapter,
+                        struct WLAN_802_11_SSID *ssid, u8 * bssid, u8 mode);
+
+struct bss_descriptor * libertas_find_best_SSID_in_list(wlan_adapter * adapter,
+                        u8 mode);
+
+extern struct bss_descriptor * libertas_find_BSSID_in_list(wlan_adapter * adapter,
+                        u8 * bssid, u8 mode);
 
 int libertas_find_best_network_SSID(wlan_private * priv,
                         struct WLAN_802_11_SSID *pSSID,