[tipc-discussion] [PATCH net-next] tipc: discard MSG_CRYPTO msgs when key_exchange_enabled is not set

[Xin L. <luc...@gm...>]

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 <luc...@gm...>
---
 net/tipc/link.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/tipc/link.c b/net/tipc/link.c
index 09ae8448f394..8d9e09f48f4c 100644
--- 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;
 		}
-- 
2.27.0