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mac80211: Replace {sw, hw}_scanning variables with a bitfield

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Use a bitfield to store the current scan mode instead of two boolean
variables {sw,hw}_scanning. This patch does not introduce functional
changes but allows us to enhance the scan flags later (for example
for background scanning).

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Helmut Schaa
2009-07-23 12:14:04 +02:00
committed by John W. Linville
parent 2fb3f028a9
commit fbe9c429f1
9 changed files with 31 additions and 29 deletions
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23
net/mac80211/scan.c
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@@ -265,7 +265,7 @@ void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
mutex_lock(&local->scan_mtx);
if (WARN_ON(!local->hw_scanning && !local->sw_scanning)) {
if (WARN_ON(!local->scanning)) {
mutex_unlock(&local->scan_mtx);
return;
}
@@ -275,16 +275,15 @@ void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
return;
}
if (local->hw_scanning)
if (test_bit(SCAN_HW_SCANNING, &local->scanning))
ieee80211_restore_scan_ies(local);
if (local->scan_req != &local->int_scan_req)
cfg80211_scan_done(local->scan_req, aborted);
local->scan_req = NULL;
was_hw_scan = local->hw_scanning;
local->hw_scanning = false;
local->sw_scanning = false;
was_hw_scan = test_bit(SCAN_HW_SCANNING, &local->scanning);
local->scanning = 0;
local->scan_channel = NULL;
/* we only have to protect scan_req and hw/sw scan */
@@ -434,9 +433,9 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
}
if (local->ops->hw_scan)
local->hw_scanning = true;
__set_bit(SCAN_HW_SCANNING, &local->scanning);
else
local->sw_scanning = true;
__set_bit(SCAN_SW_SCANNING, &local->scanning);
/*
* Kicking off the scan need not be protected,
* only the scan variable stuff, since now
@@ -459,11 +458,9 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
mutex_lock(&local->scan_mtx);
if (rc) {
if (local->ops->hw_scan) {
local->hw_scanning = false;
if (local->ops->hw_scan)
ieee80211_restore_scan_ies(local);
} else
local->sw_scanning = false;
local->scanning = 0;
ieee80211_recalc_idle(local);
@@ -572,7 +569,7 @@ void ieee80211_scan_work(struct work_struct *work)
return;
}
if (local->scan_req && !(local->sw_scanning || local->hw_scanning)) {
if (local->scan_req && !local->scanning) {
struct cfg80211_scan_request *req = local->scan_req;
int rc;
@@ -663,7 +660,7 @@ void ieee80211_scan_cancel(struct ieee80211_local *local)
* queued -- mostly at suspend under RTNL.
*/
mutex_lock(&local->scan_mtx);
swscan = local->sw_scanning;
swscan = test_bit(SCAN_SW_SCANNING, &local->scanning);
mutex_unlock(&local->scan_mtx);
if (swscan)