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Diffstat (limited to 'net/mac80211/work.c')
-rw-r--r--net/mac80211/work.c71
1 files changed, 46 insertions, 25 deletions
diff --git a/net/mac80211/work.c b/net/mac80211/work.c
index 81d4ad64184a..36305e0d06ef 100644
--- a/net/mac80211/work.c
+++ b/net/mac80211/work.c
@@ -43,7 +43,7 @@ enum work_action {
/* utils */
static inline void ASSERT_WORK_MTX(struct ieee80211_local *local)
{
- WARN_ON(!mutex_is_locked(&local->work_mtx));
+ lockdep_assert_held(&local->mtx);
}
/*
@@ -458,8 +458,9 @@ ieee80211_direct_probe(struct ieee80211_work *wk)
return WORK_ACT_TIMEOUT;
}
- printk(KERN_DEBUG "%s: direct probe to %pM (try %d)\n",
- sdata->name, wk->filter_ta, wk->probe_auth.tries);
+ printk(KERN_DEBUG "%s: direct probe to %pM (try %d/%i)\n",
+ sdata->name, wk->filter_ta, wk->probe_auth.tries,
+ IEEE80211_AUTH_MAX_TRIES);
/*
* Direct probe is sent to broadcast address as some APs
@@ -561,6 +562,25 @@ ieee80211_remain_on_channel_timeout(struct ieee80211_work *wk)
}
static enum work_action __must_check
+ieee80211_offchannel_tx(struct ieee80211_work *wk)
+{
+ if (!wk->started) {
+ wk->timeout = jiffies + msecs_to_jiffies(wk->offchan_tx.wait);
+
+ /*
+ * After this, offchan_tx.frame remains but now is no
+ * longer a valid pointer -- we still need it as the
+ * cookie for canceling this work.
+ */
+ ieee80211_tx_skb(wk->sdata, wk->offchan_tx.frame);
+
+ return WORK_ACT_NONE;
+ }
+
+ return WORK_ACT_TIMEOUT;
+}
+
+static enum work_action __must_check
ieee80211_assoc_beacon_wait(struct ieee80211_work *wk)
{
if (wk->started)
@@ -757,7 +777,7 @@ static void ieee80211_work_rx_queued_mgmt(struct ieee80211_local *local,
mgmt = (struct ieee80211_mgmt *) skb->data;
fc = le16_to_cpu(mgmt->frame_control);
- mutex_lock(&local->work_mtx);
+ mutex_lock(&local->mtx);
list_for_each_entry(wk, &local->work_list, list) {
const u8 *bssid = NULL;
@@ -833,7 +853,7 @@ static void ieee80211_work_rx_queued_mgmt(struct ieee80211_local *local,
WARN(1, "unexpected: %d", rma);
}
- mutex_unlock(&local->work_mtx);
+ mutex_unlock(&local->mtx);
if (rma != WORK_ACT_DONE)
goto out;
@@ -845,9 +865,9 @@ static void ieee80211_work_rx_queued_mgmt(struct ieee80211_local *local,
case WORK_DONE_REQUEUE:
synchronize_rcu();
wk->started = false; /* restart */
- mutex_lock(&local->work_mtx);
+ mutex_lock(&local->mtx);
list_add_tail(&wk->list, &local->work_list);
- mutex_unlock(&local->work_mtx);
+ mutex_unlock(&local->mtx);
}
out:
@@ -888,9 +908,9 @@ static void ieee80211_work_work(struct work_struct *work)
while ((skb = skb_dequeue(&local->work_skb_queue)))
ieee80211_work_rx_queued_mgmt(local, skb);
- ieee80211_recalc_idle(local);
+ mutex_lock(&local->mtx);
- mutex_lock(&local->work_mtx);
+ ieee80211_recalc_idle(local);
list_for_each_entry_safe(wk, tmp, &local->work_list, list) {
bool started = wk->started;
@@ -955,6 +975,9 @@ static void ieee80211_work_work(struct work_struct *work)
case IEEE80211_WORK_REMAIN_ON_CHANNEL:
rma = ieee80211_remain_on_channel_timeout(wk);
break;
+ case IEEE80211_WORK_OFFCHANNEL_TX:
+ rma = ieee80211_offchannel_tx(wk);
+ break;
case IEEE80211_WORK_ASSOC_BEACON_WAIT:
rma = ieee80211_assoc_beacon_wait(wk);
break;
@@ -995,20 +1018,16 @@ static void ieee80211_work_work(struct work_struct *work)
run_again(local, jiffies + HZ/2);
}
- mutex_lock(&local->scan_mtx);
-
if (list_empty(&local->work_list) && local->scan_req &&
!local->scanning)
ieee80211_queue_delayed_work(&local->hw,
&local->scan_work,
round_jiffies_relative(0));
- mutex_unlock(&local->scan_mtx);
-
- mutex_unlock(&local->work_mtx);
-
ieee80211_recalc_idle(local);
+ mutex_unlock(&local->mtx);
+
list_for_each_entry_safe(wk, tmp, &free_work, list) {
wk->done(wk, NULL);
list_del(&wk->list);
@@ -1035,16 +1054,15 @@ void ieee80211_add_work(struct ieee80211_work *wk)
wk->started = false;
local = wk->sdata->local;
- mutex_lock(&local->work_mtx);
+ mutex_lock(&local->mtx);
list_add_tail(&wk->list, &local->work_list);
- mutex_unlock(&local->work_mtx);
+ mutex_unlock(&local->mtx);
ieee80211_queue_work(&local->hw, &local->work_work);
}
void ieee80211_work_init(struct ieee80211_local *local)
{
- mutex_init(&local->work_mtx);
INIT_LIST_HEAD(&local->work_list);
setup_timer(&local->work_timer, ieee80211_work_timer,
(unsigned long)local);
@@ -1056,28 +1074,31 @@ void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_work *wk;
+ bool cleanup = false;
- mutex_lock(&local->work_mtx);
+ mutex_lock(&local->mtx);
list_for_each_entry(wk, &local->work_list, list) {
if (wk->sdata != sdata)
continue;
+ cleanup = true;
wk->type = IEEE80211_WORK_ABORT;
wk->started = true;
wk->timeout = jiffies;
}
- mutex_unlock(&local->work_mtx);
+ mutex_unlock(&local->mtx);
/* run cleanups etc. */
- ieee80211_work_work(&local->work_work);
+ if (cleanup)
+ ieee80211_work_work(&local->work_work);
- mutex_lock(&local->work_mtx);
+ mutex_lock(&local->mtx);
list_for_each_entry(wk, &local->work_list, list) {
if (wk->sdata != sdata)
continue;
WARN_ON(1);
break;
}
- mutex_unlock(&local->work_mtx);
+ mutex_unlock(&local->mtx);
}
ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata,
@@ -1163,7 +1184,7 @@ int ieee80211_wk_cancel_remain_on_channel(struct ieee80211_sub_if_data *sdata,
struct ieee80211_work *wk, *tmp;
bool found = false;
- mutex_lock(&local->work_mtx);
+ mutex_lock(&local->mtx);
list_for_each_entry_safe(wk, tmp, &local->work_list, list) {
if ((unsigned long) wk == cookie) {
wk->timeout = jiffies;
@@ -1171,7 +1192,7 @@ int ieee80211_wk_cancel_remain_on_channel(struct ieee80211_sub_if_data *sdata,
break;
}
}
- mutex_unlock(&local->work_mtx);
+ mutex_unlock(&local->mtx);
if (!found)
return -ENOENT;
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