ieee80211_get_keyid() will return false value if IV has been stripped,
such as return 0 for IP/ARP frames due to LLC header, and return -EINVAL
for disassociation frames due to its length... etc.
Signed-off-by: Xing Song <xing.song@xxxxxxxxxxxx>
---
net/mac80211/rx.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index c4071b015c18..ba3b82a72a60 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1952,7 +1952,8 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
int keyid = rx->sta->ptk_idx;
sta_ptk = rcu_dereference(rx->sta->ptk[keyid]);
- if (ieee80211_has_protected(fc)) {
+ if (ieee80211_has_protected(fc) &&
+ !(status->flag & RX_FLAG_IV_STRIPPED)) {
cs = rx->sta->cipher_scheme;
keyid = ieee80211_get_keyid(rx->skb, cs);
--
2.17.0
