Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

[pandora-kernel.git] / net / wireless / scan.c

diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index 7e595ce..0ccf3a0 100644 (file)
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -14,29 +14,41 @@
 #include <net/iw_handler.h>
 #include "core.h"
 #include "nl80211.h"
+#include "wext-compat.h"
 
-#define IEEE80211_SCAN_RESULT_EXPIRE   (10 * HZ)
+#define IEEE80211_SCAN_RESULT_EXPIRE   (15 * HZ)
 
-void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted)
+void __cfg80211_scan_done(struct work_struct *wk)
 {
+       struct cfg80211_registered_device *rdev;
+       struct cfg80211_scan_request *request;
        struct net_device *dev;
 #ifdef CONFIG_WIRELESS_EXT
        union iwreq_data wrqu;
 #endif
 
-       dev = dev_get_by_index(&init_net, request->ifidx);
-       if (!dev)
-               goto out;
+       rdev = container_of(wk, struct cfg80211_registered_device,
+                           scan_done_wk);
 
-       WARN_ON(request != wiphy_to_dev(request->wiphy)->scan_req);
+       mutex_lock(&rdev->mtx);
+       request = rdev->scan_req;
+
+       dev = request->dev;
 
-       if (aborted)
+       /*
+        * This must be before sending the other events!
+        * Otherwise, wpa_supplicant gets completely confused with
+        * wext events.
+        */
+       cfg80211_sme_scan_done(dev);
+
+       if (request->aborted)
                nl80211_send_scan_aborted(wiphy_to_dev(request->wiphy), dev);
        else
                nl80211_send_scan_done(wiphy_to_dev(request->wiphy), dev);
 
 #ifdef CONFIG_WIRELESS_EXT
-       if (!aborted) {
+       if (!request->aborted) {
                memset(&wrqu, 0, sizeof(wrqu));
 
                wireless_send_event(dev, SIOCGIWSCAN, &wrqu, NULL);
@@ -45,10 +57,18 @@ void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted)
 
        dev_put(dev);
 
- out:
+       cfg80211_unlock_rdev(rdev);
        wiphy_to_dev(request->wiphy)->scan_req = NULL;
        kfree(request);
 }
+
+void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted)
+{
+       WARN_ON(request != wiphy_to_dev(request->wiphy)->scan_req);
+
+       request->aborted = aborted;
+       schedule_work(&wiphy_to_dev(request->wiphy)->scan_done_wk);
+}
 EXPORT_SYMBOL(cfg80211_scan_done);
 
 static void bss_release(struct kref *ref)
@@ -62,6 +82,8 @@ static void bss_release(struct kref *ref)
        if (bss->ies_allocated)
                kfree(bss->pub.information_elements);
 
+       BUG_ON(atomic_read(&bss->hold));
+
        kfree(bss);
 }
 
@@ -84,8 +106,9 @@ void cfg80211_bss_expire(struct cfg80211_registered_device *dev)
        bool expired = false;
 
        list_for_each_entry_safe(bss, tmp, &dev->bss_list, list) {
-               if (bss->hold ||
-                   !time_after(jiffies, bss->ts + IEEE80211_SCAN_RESULT_EXPIRE))
+               if (atomic_read(&bss->hold))
+                       continue;
+               if (!time_after(jiffies, bss->ts + IEEE80211_SCAN_RESULT_EXPIRE))
                        continue;
                list_del(&bss->list);
                rb_erase(&bss->rbn, &dev->bss_tree);
@@ -547,30 +570,6 @@ void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *pub)
 }
 EXPORT_SYMBOL(cfg80211_unlink_bss);
 
-void cfg80211_hold_bss(struct cfg80211_bss *pub)
-{
-       struct cfg80211_internal_bss *bss;
-
-       if (!pub)
-               return;
-
-       bss = container_of(pub, struct cfg80211_internal_bss, pub);
-       bss->hold = true;
-}
-EXPORT_SYMBOL(cfg80211_hold_bss);
-
-void cfg80211_unhold_bss(struct cfg80211_bss *pub)
-{
-       struct cfg80211_internal_bss *bss;
-
-       if (!pub)
-               return;
-
-       bss = container_of(pub, struct cfg80211_internal_bss, pub);
-       bss->hold = false;
-}
-EXPORT_SYMBOL(cfg80211_unhold_bss);
-
 #ifdef CONFIG_WIRELESS_EXT
 int cfg80211_wext_siwscan(struct net_device *dev,
                          struct iw_request_info *info,
@@ -586,7 +585,7 @@ int cfg80211_wext_siwscan(struct net_device *dev,
        if (!netif_running(dev))
                return -ENETDOWN;
 
-       rdev = cfg80211_get_dev_from_ifindex(dev->ifindex);
+       rdev = cfg80211_get_dev_from_ifindex(dev_net(dev), dev->ifindex);
 
        if (IS_ERR(rdev))
                return PTR_ERR(rdev);
@@ -611,7 +610,7 @@ int cfg80211_wext_siwscan(struct net_device *dev,
        }
 
        creq->wiphy = wiphy;
-       creq->ifidx = dev->ifindex;
+       creq->dev = dev;
        creq->ssids = (void *)(creq + 1);
        creq->channels = (void *)(creq->ssids + 1);
        creq->n_channels = n_channels;
@@ -648,9 +647,12 @@ int cfg80211_wext_siwscan(struct net_device *dev,
        if (err) {
                rdev->scan_req = NULL;
                kfree(creq);
+       } else {
+               nl80211_send_scan_start(rdev, dev);
+               dev_hold(dev);
        }
  out:
-       cfg80211_put_dev(rdev);
+       cfg80211_unlock_rdev(rdev);
        return err;
 }
 EXPORT_SYMBOL_GPL(cfg80211_wext_siwscan);
@@ -941,7 +943,7 @@ int cfg80211_wext_giwscan(struct net_device *dev,
        if (!netif_running(dev))
                return -ENETDOWN;
 
-       rdev = cfg80211_get_dev_from_ifindex(dev->ifindex);
+       rdev = cfg80211_get_dev_from_ifindex(dev_net(dev), dev->ifindex);
 
        if (IS_ERR(rdev))
                return PTR_ERR(rdev);
@@ -959,7 +961,7 @@ int cfg80211_wext_giwscan(struct net_device *dev,
        }
 
  out:
-       cfg80211_put_dev(rdev);
+       cfg80211_unlock_rdev(rdev);
        return res;
 }
 EXPORT_SYMBOL_GPL(cfg80211_wext_giwscan);