From: Chih-Kang Chang gary.chang@realtek.com
[ Upstream commit f50d2ff8f016b79a2ff4acd5943a1eda40c545d4 ]
ieee80211_amsdu_realloc_pad() fails to account for extra_tx_headroom, the original reserved headroom might be eaten. Add the necessary extra_tx_headroom.
Fixes: 6e0456b54545 ("mac80211: add A-MSDU tx support") Signed-off-by: Chih-Kang Chang gary.chang@realtek.com Signed-off-by: Ping-Ke Shih pkshih@realtek.com Link: https://lore.kernel.org/r/20210816085128.10931-2-pkshih@realtek.com [fix indentation] Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- net/mac80211/tx.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 3530d1a5fc98..5c5908127fcb 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -3142,7 +3142,9 @@ static bool ieee80211_amsdu_prepare_head(struct ieee80211_sub_if_data *sdata, if (info->control.flags & IEEE80211_TX_CTRL_AMSDU) return true;
- if (!ieee80211_amsdu_realloc_pad(local, skb, sizeof(*amsdu_hdr))) + if (!ieee80211_amsdu_realloc_pad(local, skb, + sizeof(*amsdu_hdr) + + local->hw.extra_tx_headroom)) return false;
data = skb_push(skb, sizeof(*amsdu_hdr));