[PATCH 289/379][SRU][OEM-5.6] mac80211: set info->control.hw_key for encap offload packets

[You-Sheng Yang]

From: Felix Fietkau <nbd at nbd.name>

BugLink: https://bugs.launchpad.net/bugs/1879633

This is needed for drivers that don't do the key lookup themselves

Signed-off-by: Felix Fietkau <nbd at nbd.name>
Link: https://lore.kernel.org/r/20200908123702.88454-5-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg at intel.com>
(cherry picked from commit ae045152764229e11c6833f5ccae4b62e9a0b60f)
Signed-off-by: You-Sheng Yang <vicamo.yang at canonical.com>
---
 net/mac80211/tx.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index a12c92b73608..fdb7803f6121 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -4194,6 +4194,7 @@ static void ieee80211_8023_xmit(struct ieee80211_sub_if_data *sdata,
 {
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 	struct ieee80211_local *local = sdata->local;
+	struct ieee80211_key *key;
 	struct tid_ampdu_tx *tid_tx;
 	u8 tid;
 
@@ -4242,6 +4243,10 @@ static void ieee80211_8023_xmit(struct ieee80211_sub_if_data *sdata,
 	info->control.flags |= IEEE80211_TX_CTRL_HW_80211_ENCAP;
 	info->control.vif = &sdata->vif;
 
+	key = rcu_dereference(sta->ptk[sta->ptk_idx]);
+	if (key)
+		info->control.hw_key = &key->conf;
+
 	ieee80211_tx_8023(sdata, skb, skb->len, sta, false);
 
 	return;
-- 
2.29.2