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-rw-r--r--include/linux/ieee80211.h1
-rw-r--r--net/mac80211/agg-rx.c48
-rw-r--r--net/mac80211/debugfs_sta.c10
-rw-r--r--net/mac80211/rx.c5
-rw-r--r--net/mac80211/sta_info.c58
-rw-r--r--net/mac80211/sta_info.h6
6 files changed, 40 insertions, 88 deletions
diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 19984958ab7b..e9e03b02cb08 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -1324,7 +1324,6 @@ enum ieee80211_back_actioncode {
enum ieee80211_back_parties {
WLAN_BACK_RECIPIENT = 0,
WLAN_BACK_INITIATOR = 1,
- WLAN_BACK_TIMER = 2,
};
/* SA Query action */
diff --git a/net/mac80211/agg-rx.c b/net/mac80211/agg-rx.c
index 7d87f446f030..53233ab50f65 100644
--- a/net/mac80211/agg-rx.c
+++ b/net/mac80211/agg-rx.c
@@ -22,19 +22,20 @@ void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
u16 initiator, u16 reason)
{
struct ieee80211_local *local = sta->local;
+ struct tid_ampdu_rx *tid_rx;
int i;
- /* check if TID is in operational state */
spin_lock_bh(&sta->lock);
- if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_OPERATIONAL) {
+
+ /* check if TID is in operational state */
+ if (!sta->ampdu_mlme.tid_active_rx[tid]) {
spin_unlock_bh(&sta->lock);
return;
}
- sta->ampdu_mlme.tid_state_rx[tid] =
- HT_AGG_STATE_REQ_STOP_BA_MSK |
- (initiator << HT_AGG_STATE_INITIATOR_SHIFT);
- spin_unlock_bh(&sta->lock);
+ sta->ampdu_mlme.tid_active_rx[tid] = false;
+
+ tid_rx = sta->ampdu_mlme.tid_rx[tid];
#ifdef CONFIG_MAC80211_HT_DEBUG
printk(KERN_DEBUG "Rx BA session stop requested for %pM tid %u\n",
@@ -46,37 +47,30 @@ void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
printk(KERN_DEBUG "HW problem - can not stop rx "
"aggregation for tid %d\n", tid);
- /* shutdown timer has not expired */
- if (initiator != WLAN_BACK_TIMER)
- del_timer_sync(&sta->ampdu_mlme.tid_rx[tid]->session_timer);
-
/* check if this is a self generated aggregation halt */
- if (initiator == WLAN_BACK_RECIPIENT || initiator == WLAN_BACK_TIMER)
+ if (initiator == WLAN_BACK_RECIPIENT)
ieee80211_send_delba(sta->sdata, sta->sta.addr,
tid, 0, reason);
/* free the reordering buffer */
- for (i = 0; i < sta->ampdu_mlme.tid_rx[tid]->buf_size; i++) {
- if (sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]) {
+ for (i = 0; i < tid_rx->buf_size; i++) {
+ if (tid_rx->reorder_buf[i]) {
/* release the reordered frames */
- dev_kfree_skb(sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]);
- sta->ampdu_mlme.tid_rx[tid]->stored_mpdu_num--;
- sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i] = NULL;
+ dev_kfree_skb(tid_rx->reorder_buf[i]);
+ tid_rx->stored_mpdu_num--;
+ tid_rx->reorder_buf[i] = NULL;
}
}
- spin_lock_bh(&sta->lock);
/* free resources */
- kfree(sta->ampdu_mlme.tid_rx[tid]->reorder_buf);
- kfree(sta->ampdu_mlme.tid_rx[tid]->reorder_time);
-
- if (!sta->ampdu_mlme.tid_rx[tid]->shutdown) {
- kfree(sta->ampdu_mlme.tid_rx[tid]);
- sta->ampdu_mlme.tid_rx[tid] = NULL;
- }
+ kfree(tid_rx->reorder_buf);
+ kfree(tid_rx->reorder_time);
+ sta->ampdu_mlme.tid_rx[tid] = NULL;
- sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_IDLE;
spin_unlock_bh(&sta->lock);
+
+ del_timer_sync(&tid_rx->session_timer);
+ kfree(tid_rx);
}
/*
@@ -211,7 +205,7 @@ void ieee80211_process_addba_request(struct ieee80211_local *local,
/* examine state machine */
spin_lock_bh(&sta->lock);
- if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_IDLE) {
+ if (sta->ampdu_mlme.tid_active_rx[tid]) {
#ifdef CONFIG_MAC80211_HT_DEBUG
if (net_ratelimit())
printk(KERN_DEBUG "unexpected AddBA Req from "
@@ -273,7 +267,7 @@ void ieee80211_process_addba_request(struct ieee80211_local *local,
}
/* change state and send addba resp */
- sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_OPERATIONAL;
+ sta->ampdu_mlme.tid_active_rx[tid] = true;
tid_agg_rx->dialog_token = dialog_token;
tid_agg_rx->ssn = start_seq_num;
tid_agg_rx->head_seq_num = start_seq_num;
diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c
index 23e720034577..740ff6c5b92c 100644
--- a/net/mac80211/debugfs_sta.c
+++ b/net/mac80211/debugfs_sta.c
@@ -119,7 +119,7 @@ STA_OPS(last_seq_ctrl);
static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
size_t count, loff_t *ppos)
{
- char buf[64 + STA_TID_NUM * 40], *p = buf;
+ char buf[71 + STA_TID_NUM * 40], *p = buf;
int i;
struct sta_info *sta = file->private_data;
@@ -127,16 +127,16 @@ static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n",
sta->ampdu_mlme.dialog_token_allocator + 1);
p += scnprintf(p, sizeof(buf) + buf - p,
- "TID\t\tRX\tDTKN\tSSN\t\tTX\tDTKN\tSSN\tpending\n");
+ "TID\t\tRX active\tDTKN\tSSN\t\tTX\tDTKN\tSSN\tpending\n");
for (i = 0; i < STA_TID_NUM; i++) {
p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i);
p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x",
- sta->ampdu_mlme.tid_state_rx[i]);
+ sta->ampdu_mlme.tid_active_rx[i]);
p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
- sta->ampdu_mlme.tid_state_rx[i] ?
+ sta->ampdu_mlme.tid_active_rx[i] ?
sta->ampdu_mlme.tid_rx[i]->dialog_token : 0);
p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
- sta->ampdu_mlme.tid_state_rx[i] ?
+ sta->ampdu_mlme.tid_active_rx[i] ?
sta->ampdu_mlme.tid_rx[i]->ssn : 0);
p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x",
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index c02e43b50ac3..62053fa711f3 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -720,7 +720,7 @@ static void ieee80211_rx_reorder_ampdu(struct ieee80211_rx_data *rx,
tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
- if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_OPERATIONAL)
+ if (!sta->ampdu_mlme.tid_active_rx[tid])
goto dont_reorder;
tid_agg_rx = sta->ampdu_mlme.tid_rx[tid];
@@ -1805,8 +1805,7 @@ ieee80211_rx_h_ctrl(struct ieee80211_rx_data *rx, struct sk_buff_head *frames)
if (!rx->sta)
return RX_DROP_MONITOR;
tid = le16_to_cpu(bar->control) >> 12;
- if (rx->sta->ampdu_mlme.tid_state_rx[tid]
- != HT_AGG_STATE_OPERATIONAL)
+ if (!rx->sta->ampdu_mlme.tid_active_rx[tid])
return RX_DROP_MONITOR;
tid_agg_rx = rx->sta->ampdu_mlme.tid_rx[tid];
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index bd11753c1525..5bf044b92dca 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -238,9 +238,6 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
* enable session_timer's data differentiation. refer to
* sta_rx_agg_session_timer_expired for useage */
sta->timer_to_tid[i] = i;
- /* rx */
- sta->ampdu_mlme.tid_state_rx[i] = HT_AGG_STATE_IDLE;
- sta->ampdu_mlme.tid_rx[i] = NULL;
/* tx */
sta->ampdu_mlme.tid_state_tx[i] = HT_AGG_STATE_IDLE;
sta->ampdu_mlme.tid_tx[i] = NULL;
@@ -606,7 +603,7 @@ static int __must_check __sta_info_destroy(struct sta_info *sta)
struct ieee80211_sub_if_data *sdata;
struct sk_buff *skb;
unsigned long flags;
- int ret, i;
+ int ret;
might_sleep();
@@ -616,6 +613,15 @@ static int __must_check __sta_info_destroy(struct sta_info *sta)
local = sta->local;
sdata = sta->sdata;
+ /*
+ * Before removing the station from the driver and
+ * rate control, it might still start new aggregation
+ * sessions -- block that to make sure the tear-down
+ * will be sufficient.
+ */
+ set_sta_flags(sta, WLAN_STA_BLOCK_BA);
+ ieee80211_sta_tear_down_BA_sessions(sta);
+
spin_lock_irqsave(&local->sta_lock, flags);
ret = sta_info_hash_del(local, sta);
/* this might still be the pending list ... which is fine */
@@ -700,50 +706,6 @@ static int __must_check __sta_info_destroy(struct sta_info *sta)
while ((skb = skb_dequeue(&sta->tx_filtered)) != NULL)
dev_kfree_skb_any(skb);
- for (i = 0; i < STA_TID_NUM; i++) {
- struct tid_ampdu_rx *tid_rx;
- struct tid_ampdu_tx *tid_tx;
-
- spin_lock_bh(&sta->lock);
- tid_rx = sta->ampdu_mlme.tid_rx[i];
- /* Make sure timer won't free the tid_rx struct, see below */
- if (tid_rx)
- tid_rx->shutdown = true;
-
- spin_unlock_bh(&sta->lock);
-
- /*
- * Outside spinlock - shutdown is true now so that the timer
- * won't free tid_rx, we have to do that now. Can't let the
- * timer do it because we have to sync the timer outside the
- * lock that it takes itself.
- */
- if (tid_rx) {
- del_timer_sync(&tid_rx->session_timer);
- kfree(tid_rx);
- }
-
- /*
- * No need to do such complications for TX agg sessions, the
- * path leading to freeing the tid_tx struct goes via a call
- * from the driver, and thus needs to look up the sta struct
- * again, which cannot be found when we get here. Hence, we
- * just need to delete the timer and free the aggregation
- * info; we won't be telling the peer about it then but that
- * doesn't matter if we're not talking to it again anyway.
- */
- tid_tx = sta->ampdu_mlme.tid_tx[i];
- if (tid_tx) {
- del_timer_sync(&tid_tx->addba_resp_timer);
- /*
- * STA removed while aggregation session being
- * started? Bit odd, but purge frames anyway.
- */
- skb_queue_purge(&tid_tx->pending);
- kfree(tid_tx);
- }
- }
-
__sta_info_free(local, sta);
return 0;
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index 57e81758d6f7..48a5e80957f0 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -36,7 +36,7 @@
* frame to this station is transmitted.
* @WLAN_STA_MFP: Management frame protection is used with this STA.
* @WLAN_STA_BLOCK_BA: Used to deny ADDBA requests (both TX and RX)
- * during suspend/resume.
+ * during suspend/resume and station removal.
* @WLAN_STA_PS_DRIVER: driver requires keeping this station in
* power-save mode logically to flush frames that might still
* be in the queues
@@ -106,7 +106,6 @@ struct tid_ampdu_tx {
* @buf_size: buffer size for incoming A-MPDUs
* @timeout: reset timer value (in TUs).
* @dialog_token: dialog token for aggregation session
- * @shutdown: this session is being shut down due to STA removal
*/
struct tid_ampdu_rx {
struct sk_buff **reorder_buf;
@@ -118,7 +117,6 @@ struct tid_ampdu_rx {
u16 buf_size;
u16 timeout;
u8 dialog_token;
- bool shutdown;
};
/**
@@ -156,7 +154,7 @@ enum plink_state {
*/
struct sta_ampdu_mlme {
/* rx */
- u8 tid_state_rx[STA_TID_NUM];
+ bool tid_active_rx[STA_TID_NUM];
struct tid_ampdu_rx *tid_rx[STA_TID_NUM];
/* tx */
u8 tid_state_tx[STA_TID_NUM];
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-15 09:07:16 +0300