[][MAC80211][MT76][Fix patch failed]
[Description]
Fix patch fail
[Release-log]
N/A
Change-Id: Id39214073eefc34651dbac7fc721e9042534d674
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6074564
diff --git a/autobuild_mac80211_release/package/kernel/mt76/patches/1113-mt76-mt7915-drop-packets-when-TWT-stations-use-more-.patch b/autobuild_mac80211_release/package/kernel/mt76/patches/1113-mt76-mt7915-drop-packets-when-TWT-stations-use-more-.patch
new file mode 100644
index 0000000..17142a1
--- /dev/null
+++ b/autobuild_mac80211_release/package/kernel/mt76/patches/1113-mt76-mt7915-drop-packets-when-TWT-stations-use-more-.patch
@@ -0,0 +1,98 @@
+From 7d082308e57e467607e4ca9e63938fea0eb00306 Mon Sep 17 00:00:00 2001
+From: Peter Chiu <chui-hao.chiu@mediatek.com>
+Date: Mon, 6 Jun 2022 20:20:55 +0800
+Subject: [PATCH 1113/1115] mt76: mt7915: drop packets when TWT stations use
+ more tokens than 128
+
+---
+ mt7915/mac.c | 21 ++++++++++++++++++---
+ mt7915/mt7915.h | 2 ++
+ 2 files changed, 20 insertions(+), 3 deletions(-)
+
+diff --git a/mt7915/mac.c b/mt7915/mac.c
+index af72e268..bae700eb 100644
+--- a/mt7915/mac.c
++++ b/mt7915/mac.c
+@@ -1322,6 +1322,7 @@ int mt7915_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr,
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_info->skb);
+ struct ieee80211_key_conf *key = info->control.hw_key;
+ struct ieee80211_vif *vif = info->control.vif;
++ struct mt7915_sta *msta = NULL;
+ struct mt76_txwi_cache *t;
+ struct mt7915_txp *txp;
+ int id, i, nbuf = tx_info->nbuf - 1;
+@@ -1335,8 +1336,6 @@ int mt7915_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr,
+ wcid = &dev->mt76.global_wcid;
+
+ if (sta) {
+- struct mt7915_sta *msta;
+-
+ msta = (struct mt7915_sta *)sta->drv_priv;
+
+ if (time_after(jiffies, msta->jiffies + HZ / 4)) {
+@@ -1352,10 +1351,22 @@ int mt7915_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr,
+ mgmt->u.action.category == 0xff)
+ return -1;
+
++ spin_lock_bh(&mdev->token_lock);
++ if (msta && msta->twt.flowid_mask && msta->token_count > 128) {
++ spin_unlock_bh(&mdev->token_lock);
++ return -1;
++ }
++ spin_unlock_bh(&mdev->token_lock);
++
+ id = mt76_token_consume(mdev, &t);
+ if (id < 0)
+ return id;
+
++ spin_lock_bh(&mdev->token_lock);
++ if (msta)
++ msta->token_count++;
++ spin_unlock_bh(&mdev->token_lock);
++
+ pid = mt76_tx_status_skb_add(mdev, wcid, tx_info->skb);
+ mt7915_mac_write_txwi(dev, txwi_ptr, tx_info->skb, wcid, pid, key, 0);
+
+@@ -1546,6 +1557,7 @@ mt7915_mac_tx_free(struct mt7915_dev *dev, void *data, int len)
+ struct mt76_dev *mdev = &dev->mt76;
+ struct mt76_txwi_cache *txwi;
+ struct ieee80211_sta *sta = NULL;
++ struct mt7915_sta *msta = NULL;
+ LIST_HEAD(free_list);
+ void *end = data + len;
+ bool v3, wake = false;
+@@ -1569,7 +1581,6 @@ mt7915_mac_tx_free(struct mt7915_dev *dev, void *data, int len)
+ * 1'b0: msdu_id with the same 'wcid pair' as above.
+ */
+ if (info & MT_TX_FREE_PAIR) {
+- struct mt7915_sta *msta;
+ struct mt76_wcid *wcid;
+ u16 idx;
+
+@@ -1602,6 +1613,10 @@ mt7915_mac_tx_free(struct mt7915_dev *dev, void *data, int len)
+ txwi = mt76_token_release(mdev, msdu, &wake);
+ if (!txwi)
+ continue;
++ spin_lock(&mdev->token_lock);
++ if (msta)
++ msta->token_count--;
++ spin_unlock(&mdev->token_lock);
+
+ mt7915_txwi_free(dev, txwi, sta, &free_list);
+ }
+diff --git a/mt7915/mt7915.h b/mt7915/mt7915.h
+index c99e700d..90391a07 100644
+--- a/mt7915/mt7915.h
++++ b/mt7915/mt7915.h
+@@ -137,6 +137,8 @@ struct mt7915_sta {
+ u8 flowid_mask;
+ struct mt7915_twt_flow flow[MT7915_MAX_STA_TWT_AGRT];
+ } twt;
++
++ int token_count;
+ };
+
+ struct mt7915_vif_cap {
+--
+2.18.0
+