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authorDavid S. Miller <davem@davemloft.net>2009-11-29 00:57:15 -0800
committerDavid S. Miller <davem@davemloft.net>2009-11-29 00:57:15 -0800
commit9b963e5d0e01461099a40117b05480f24b63381f (patch)
tree4756d554e37bf4ab7202f2c564cbe629af98b576 /net/mac80211
parent3b8626ba01a8a745a3fdf22dd347edd708b0af13 (diff)
parent5fdd4baef6195a1f2960e901c8877e2105f832ca (diff)
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts: drivers/ieee802154/fakehard.c drivers/net/e1000e/ich8lan.c drivers/net/e1000e/phy.c drivers/net/netxen/netxen_nic_init.c drivers/net/wireless/ath/ath9k/main.c
Diffstat (limited to 'net/mac80211')
-rw-r--r--net/mac80211/agg-tx.c18
-rw-r--r--net/mac80211/ieee80211_i.h8
-rw-r--r--net/mac80211/util.c19
3 files changed, 25 insertions, 20 deletions
diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c
index b50b2bc3b8c5..adf01fcd462e 100644
--- a/net/mac80211/agg-tx.c
+++ b/net/mac80211/agg-tx.c
@@ -175,12 +175,14 @@ static void sta_addba_resp_timer_expired(unsigned long data)
/* check if the TID waits for addBA response */
spin_lock_bh(&sta->lock);
- if (!(*state & HT_ADDBA_REQUESTED_MSK)) {
+ if ((*state & (HT_ADDBA_REQUESTED_MSK | HT_ADDBA_RECEIVED_MSK)) !=
+ HT_ADDBA_REQUESTED_MSK) {
spin_unlock_bh(&sta->lock);
*state = HT_AGG_STATE_IDLE;
#ifdef CONFIG_MAC80211_HT_DEBUG
printk(KERN_DEBUG "timer expired on tid %d but we are not "
- "expecting addBA response there", tid);
+ "(or no longer) expecting addBA response there",
+ tid);
#endif
return;
}
@@ -649,21 +651,21 @@ void ieee80211_process_addba_resp(struct ieee80211_local *local,
state = &sta->ampdu_mlme.tid_state_tx[tid];
- del_timer_sync(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer);
-
spin_lock_bh(&sta->lock);
if (!(*state & HT_ADDBA_REQUESTED_MSK))
- goto timer_still_needed;
+ goto out;
if (mgmt->u.action.u.addba_resp.dialog_token !=
sta->ampdu_mlme.tid_tx[tid]->dialog_token) {
#ifdef CONFIG_MAC80211_HT_DEBUG
printk(KERN_DEBUG "wrong addBA response token, tid %d\n", tid);
#endif /* CONFIG_MAC80211_HT_DEBUG */
- goto timer_still_needed;
+ goto out;
}
+ del_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer);
+
#ifdef CONFIG_MAC80211_HT_DEBUG
printk(KERN_DEBUG "switched off addBA timer for tid %d \n", tid);
#endif /* CONFIG_MAC80211_HT_DEBUG */
@@ -682,10 +684,6 @@ void ieee80211_process_addba_resp(struct ieee80211_local *local,
___ieee80211_stop_tx_ba_session(sta, tid, WLAN_BACK_INITIATOR);
}
- goto out;
-
- timer_still_needed:
- add_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer);
out:
spin_unlock_bh(&sta->lock);
}
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 04093e84ebd7..ab2894211638 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -601,6 +601,14 @@ struct ieee80211_local {
bool suspended;
/*
+ * Resuming is true while suspended, but when we're reprogramming the
+ * hardware -- at that time it's allowed to use ieee80211_queue_work()
+ * again even though some other parts of the stack are still suspended
+ * and we still drop received frames to avoid waking the stack.
+ */
+ bool resuming;
+
+ /*
* quiescing is true during the suspend process _only_ to
* ease timer cancelling etc.
*/
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 2fb0432ac830..d09f78bb2442 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -520,9 +520,9 @@ EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
*/
static bool ieee80211_can_queue_work(struct ieee80211_local *local)
{
- if (WARN(local->suspended, "queueing ieee80211 work while "
- "going to suspend\n"))
- return false;
+ if (WARN(local->suspended && !local->resuming,
+ "queueing ieee80211 work while going to suspend\n"))
+ return false;
return true;
}
@@ -1033,13 +1033,9 @@ int ieee80211_reconfig(struct ieee80211_local *local)
struct sta_info *sta;
unsigned long flags;
int res;
- bool from_suspend = local->suspended;
- /*
- * We're going to start the hardware, at that point
- * we are no longer suspended and can RX frames.
- */
- local->suspended = false;
+ if (local->suspended)
+ local->resuming = true;
/* restart hardware */
if (local->open_count) {
@@ -1137,11 +1133,14 @@ int ieee80211_reconfig(struct ieee80211_local *local)
* If this is for hw restart things are still running.
* We may want to change that later, however.
*/
- if (!from_suspend)
+ if (!local->suspended)
return 0;
#ifdef CONFIG_PM
+ /* first set suspended false, then resuming */
local->suspended = false;
+ mb();
+ local->resuming = false;
list_for_each_entry(sdata, &local->interfaces, list) {
switch(sdata->vif.type) {