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wifi: mt76: add a wrapper for wcid access with validation

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Several places use rcu_dereference to get a wcid entry without validating
if the index exceeds the array boundary. Fix this by using a helper function,
which handles validation.

Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Felix Fietkau
2025-07-04 20:46:06 +02:00
parent c4a114e2b8
commit 243e572d89
17 changed files with 41 additions and 68 deletions
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mt76_connac_mac.c
+1 -1
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@@ -1172,7 +1172,7 @@ void mt76_connac2_txwi_free(struct mt76_dev *dev, struct mt76_txwi_cache *t,
wcid_idx = wcid->idx;
} else {
wcid_idx = le32_get_bits(txwi[1], MT_TXD1_WLAN_IDX);
wcid = rcu_dereference(dev->wcid[wcid_idx]);
wcid = __mt76_wcid_ptr(dev, wcid_idx);
if (wcid && wcid->sta) {
sta = container_of((void *)wcid, struct ieee80211_sta,