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Diffstat (limited to 'net/mac80211/work.c')
-rw-r--r--net/mac80211/work.c84
1 files changed, 61 insertions, 23 deletions
diff --git a/net/mac80211/work.c b/net/mac80211/work.c
index b025dc7bb0fd..ae344d1ba056 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);
}
/*
@@ -560,6 +560,22 @@ ieee80211_remain_on_channel_timeout(struct ieee80211_work *wk)
return WORK_ACT_TIMEOUT;
}
+static enum work_action __must_check
+ieee80211_assoc_beacon_wait(struct ieee80211_work *wk)
+{
+ if (wk->started)
+ return WORK_ACT_TIMEOUT;
+
+ /*
+ * Wait up to one beacon interval ...
+ * should this be more if we miss one?
+ */
+ printk(KERN_DEBUG "%s: waiting for beacon from %pM\n",
+ wk->sdata->name, wk->filter_ta);
+ wk->timeout = TU_TO_EXP_TIME(wk->assoc.bss->beacon_interval);
+ return WORK_ACT_NONE;
+}
+
static void ieee80211_auth_challenge(struct ieee80211_work *wk,
struct ieee80211_mgmt *mgmt,
size_t len)
@@ -709,6 +725,25 @@ ieee80211_rx_mgmt_probe_resp(struct ieee80211_work *wk,
return WORK_ACT_DONE;
}
+static enum work_action __must_check
+ieee80211_rx_mgmt_beacon(struct ieee80211_work *wk,
+ struct ieee80211_mgmt *mgmt, size_t len)
+{
+ struct ieee80211_sub_if_data *sdata = wk->sdata;
+ struct ieee80211_local *local = sdata->local;
+
+ ASSERT_WORK_MTX(local);
+
+ if (wk->type != IEEE80211_WORK_ASSOC_BEACON_WAIT)
+ return WORK_ACT_MISMATCH;
+
+ if (len < 24 + 12)
+ return WORK_ACT_NONE;
+
+ printk(KERN_DEBUG "%s: beacon received\n", sdata->name);
+ return WORK_ACT_DONE;
+}
+
static void ieee80211_work_rx_queued_mgmt(struct ieee80211_local *local,
struct sk_buff *skb)
{
@@ -722,7 +757,7 @@ 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;
@@ -731,6 +766,7 @@ static void ieee80211_work_rx_queued_mgmt(struct ieee80211_local *local,
case IEEE80211_WORK_DIRECT_PROBE:
case IEEE80211_WORK_AUTH:
case IEEE80211_WORK_ASSOC:
+ case IEEE80211_WORK_ASSOC_BEACON_WAIT:
bssid = wk->filter_ta;
break;
default:
@@ -745,6 +781,9 @@ static void ieee80211_work_rx_queued_mgmt(struct ieee80211_local *local,
continue;
switch (fc & IEEE80211_FCTL_STYPE) {
+ case IEEE80211_STYPE_BEACON:
+ rma = ieee80211_rx_mgmt_beacon(wk, mgmt, skb->len);
+ break;
case IEEE80211_STYPE_PROBE_RESP:
rma = ieee80211_rx_mgmt_probe_resp(wk, mgmt, skb->len,
rx_status);
@@ -794,7 +833,7 @@ 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;
@@ -806,9 +845,9 @@ 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:
@@ -840,7 +879,7 @@ static void ieee80211_work_work(struct work_struct *work)
/*
* ieee80211_queue_work() should have picked up most cases,
- * here we'll pick the the rest.
+ * here we'll pick the rest.
*/
if (WARN(local->suspended, "work scheduled while going to suspend\n"))
return;
@@ -849,9 +888,9 @@ 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;
@@ -916,6 +955,9 @@ 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_ASSOC_BEACON_WAIT:
+ rma = ieee80211_assoc_beacon_wait(wk);
+ break;
}
wk->started = started;
@@ -953,20 +995,16 @@ 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);
@@ -993,16 +1031,15 @@ 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);
@@ -1015,7 +1052,7 @@ void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata)
struct ieee80211_local *local = sdata->local;
struct ieee80211_work *wk;
- mutex_lock(&local->work_mtx);
+ mutex_lock(&local->mtx);
list_for_each_entry(wk, &local->work_list, list) {
if (wk->sdata != sdata)
continue;
@@ -1023,19 +1060,19 @@ void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata)
wk->started = true;
wk->timeout = jiffies;
}
- mutex_unlock(&local->work_mtx);
+ mutex_unlock(&local->mtx);
/* run cleanups etc. */
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,
@@ -1065,6 +1102,7 @@ ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata,
case IEEE80211_STYPE_PROBE_RESP:
case IEEE80211_STYPE_ASSOC_RESP:
case IEEE80211_STYPE_REASSOC_RESP:
+ case IEEE80211_STYPE_BEACON:
skb_queue_tail(&local->work_skb_queue, skb);
ieee80211_queue_work(&local->hw, &local->work_work);
return RX_QUEUED;
@@ -1120,7 +1158,7 @@ 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;
@@ -1128,7 +1166,7 @@ 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;
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-06-03 16:30:34 +0200