tipc: discard MSG_CRYPTO msgs when key_exchange_enabled is not set

When key_exchange is disabled, there is no reason to accept MSG_CRYPTO msgs if it doesn't send MSG_CRYPTO msgs. Signed-off-by: Xin Long <[email protected]> Acked-by: Jon Maloy <[email protected]> Signed-off-by: David S. Miller <[email protected]>
bignaux · Dec 13, 2021 · 6180c78 · 6180c78
1 parent 3a6c12a
commit 6180c78
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/net/tipc/link.c b/net/tipc/link.c
@@ -1298,7 +1298,8 @@ static bool tipc_data_input(struct tipc_link *l, struct sk_buff *skb,
 		return false;
 #ifdef CONFIG_TIPC_CRYPTO
 	case MSG_CRYPTO:
-		if (TIPC_SKB_CB(skb)->decrypted) {
+		if (sysctl_tipc_key_exchange_enabled &&
+		    TIPC_SKB_CB(skb)->decrypted) {
 			tipc_crypto_msg_rcv(l->net, skb);
 			return true;
 		}