wifi: mac80211: Check 802.11 encaps offloading in ieee80211_tx_h_select_key()

With 802.11 encapsulation offloading, ieee80211_tx_h_select_key() is
called on 802.3 frames. In that case do not try to use skb data as
valid 802.11 headers.

Reported-by: Bert Karwatzki <spasswolf@web.de>
Closes: https://lore.kernel.org/linux-wireless/20250410215527.3001-1-spasswolf@web.de
Fixes: bb42f2d13ffc ("mac80211: Move reorder-sensitive TX handlers to after TXQ dequeue")
Signed-off-by: Remi Pommarel <repk@triplefau.lt>
Link: https://patch.msgid.link/1af4b5b903a5fca5ebe67333d5854f93b2be5abe.1752765971.git.repk@triplefau.lt
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index baa9d31087733a0653e79884f2d216326a6da896..73ea4d5bf266f52d6dc65ad5ae73b72147093931 100644 (file)
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -612,6 +612,12 @@ ieee80211_tx_h_select_key(struct ieee80211_tx_data *tx)
        else
                tx->key = NULL;
 
+       if (info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP) {
+               if (tx->key && tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
+                       info->control.hw_key = &tx->key->conf;
+               return TX_CONTINUE;
+       }
+
        if (tx->key) {
                bool skip_hw = false;