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authorLuciano Coelho <coelho@ti.com>2011-05-11 17:09:35 +0300
committerJohn W. Linville <linville@tuxdriver.com>2011-05-11 15:12:26 -0400
commit807f8a8c300435d5483e8d78df9dcdbc27333166 (patch)
tree1537d40e149d7a8712fe63d17ea3b51093bf03a1 /net/wireless/core.c
parent6bdbdbf4a151a3a1333818cd17a7d7795e936041 (diff)
cfg80211/nl80211: add support for scheduled scans
Implement new functionality for scheduled scan offload. With this feature we can scan automatically at certain intervals. The idea is that the hardware can perform scan automatically and filter on desired results without waking up the host unnecessarily. Add NL80211_CMD_START_SCHED_SCAN and NL80211_CMD_STOP_SCHED_SCAN commands to the nl80211 interface. When results are available they are reported by NL80211_CMD_SCHED_SCAN_RESULTS events. The userspace is informed when the scheduled scan has stopped with a NL80211_CMD_SCHED_SCAN_STOPPED event, which can be triggered either by the driver or by a call to NL80211_CMD_STOP_SCHED_SCAN. Signed-off-by: Luciano Coelho <coelho@ti.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/wireless/core.c')
-rw-r--r--net/wireless/core.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/net/wireless/core.c b/net/wireless/core.c
index bea0d80710c8..f924a49b2425 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -370,7 +370,8 @@ struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv)
spin_lock_init(&rdev->bss_lock);
INIT_LIST_HEAD(&rdev->bss_list);
INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done);
-
+ INIT_WORK(&rdev->sched_scan_results_wk, __cfg80211_sched_scan_results);
+ INIT_WORK(&rdev->sched_scan_stopped_wk, __cfg80211_sched_scan_stopped);
#ifdef CONFIG_CFG80211_WEXT
rdev->wiphy.wext = &cfg80211_wext_handler;
#endif
@@ -672,6 +673,11 @@ static void wdev_cleanup_work(struct work_struct *work)
___cfg80211_scan_done(rdev, true);
}
+ if (WARN_ON(rdev->sched_scan_req &&
+ rdev->sched_scan_req->dev == wdev->netdev)) {
+ __cfg80211_stop_sched_scan(rdev, false);
+ }
+
cfg80211_unlock_rdev(rdev);
mutex_lock(&rdev->devlist_mtx);
@@ -759,6 +765,10 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb,
break;
case NL80211_IFTYPE_P2P_CLIENT:
case NL80211_IFTYPE_STATION:
+ cfg80211_lock_rdev(rdev);
+ __cfg80211_stop_sched_scan(rdev, false);
+ cfg80211_unlock_rdev(rdev);
+
wdev_lock(wdev);
#ifdef CONFIG_CFG80211_WEXT
kfree(wdev->wext.ie);