Expose the raw SPTPS send interface from net_packet.

[tinc] / src / protocol_misc.c

diff --git a/src/protocol_misc.c b/src/protocol_misc.c
index d76ab0933a21f61c1591fda9602f3714a0727578..6fedc0823b86785224b64a845484ff5c5b4f2ee5 100644 (file)
--- a/src/protocol_misc.c
+++ b/src/protocol_misc.c
@@ -31,6 +31,7 @@
 #include "xalloc.h"
 
 int maxoutbufsize = 0;
+int mtu_info_interval = 5;
 int udp_info_interval = 5;
 
 /* Status and error notification routines */
@@ -261,8 +262,15 @@ bool send_mtu_info(node_t *from, node_t *to, int mtu) {
        if(!to->status.reachable)
                return true;
 
-       if(from == myself && to->connection)
-               return true;
+       if(from == myself) {
+               if(to->connection)
+                       return true;
+
+               struct timeval elapsed;
+               timersub(&now, &to->mtu_info_sent, &elapsed);
+               if(elapsed.tv_sec < mtu_info_interval)
+                       return true;
+       }
 
        if((to->nexthop->options >> 24) < 6)
                return true;
@@ -284,6 +292,9 @@ bool send_mtu_info(node_t *from, node_t *to, int mtu) {
                mtu = MIN(mtu, via->nexthop->minmtu);
        }
 
+       if(from == myself)
+               to->mtu_info_sent = now;
+
        /* If none of the conditions above match in the steady state, it means we're using TCP,
           so the MTU is irrelevant. That said, it is still important to honor the MTU that was passed in,
           because other parts of the relay path might be able to use UDP, which means they care about the MTU. */