Introducing the Big Tinc Lock.

[tinc] / src / net_packet.c

diff --git a/src/net_packet.c b/src/net_packet.c
index 2856c61..a985390 100644 (file)
--- a/src/net_packet.c
+++ b/src/net_packet.c
@@ -599,23 +599,26 @@ void handle_incoming_vpn_data(void *arg) {
 
                sockaddrunmap(&from);           /* Some braindead IPv6 implementations do stupid things. */
 
+               mutex_lock(&mutex);
                n = lookup_node_udp(&from);
 
                if(!n) {
                        n = try_harder(&from, &pkt);
                        if(n)
                                update_node_udp(n, &from);
-                       else ifdebug(PROTOCOL) {
+               }
+
+               if(n) {
+                       receive_udppacket(n, &pkt);
+               } else {
+                       ifdebug(PROTOCOL) {
                                hostname = sockaddr2hostname(&from);
                                logger(LOG_WARNING, "Received UDP packet from unknown source %s", hostname);
                                free(hostname);
-                               continue;
                        }
-                       else
-                               continue;
                }
 
-               receive_udppacket(n, &pkt);
+               mutex_unlock(&mutex);
        }
 }