Improvements for PMTU discovery and IPv4 packet fragmentation.

[oweals/tinc.git] / src / protocol_auth.c

diff --git a/src/protocol_auth.c b/src/protocol_auth.c
index 8aad5834a65fd6824e7b204c6270da4cac5b3fe0..77561b81b2b58688dc95771ad58c9339d0ba3a36 100644 (file)
--- a/src/protocol_auth.c
+++ b/src/protocol_auth.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: protocol_auth.c,v 1.1.4.30 2003/11/17 15:30:18 guus Exp $
+    $Id: protocol_auth.c,v 1.1.4.34 2003/12/22 11:04:16 guus Exp $
 */
 
 #include "system.h"
@@ -476,6 +476,11 @@ bool send_ack(connection_t *c)
        if((get_config_bool(lookup_config(c->config_tree, "TCPOnly"), &choice) && choice) || myself->options & OPTION_TCPONLY)
                c->options |= OPTION_TCPONLY | OPTION_INDIRECT;
 
+       if((get_config_bool(lookup_config(c->config_tree, "PMTUDiscovery"), &choice) && choice) || myself->options & OPTION_PMTU_DISCOVERY)
+               c->options |= OPTION_PMTU_DISCOVERY;
+
+       get_config_int(lookup_config(c->config_tree, "Weight"), &c->estimated_weight);
+
        return send_request(c, "%d %s %d %lx", ACK, myport, c->estimated_weight, c->options);
 }
 
@@ -516,7 +521,7 @@ bool ack_h(connection_t *c)
 {
        char hisport[MAX_STRING_SIZE];
        char *hisaddress, *dummy;
-       int weight;
+       int weight, mtu;
        long int options;
        node_t *n;
 
@@ -551,6 +556,12 @@ bool ack_h(connection_t *c)
        c->node = n;
        c->options |= options;
 
+       if(get_config_int(lookup_config(c->config_tree, "PMTU"), &mtu) && mtu < n->mtu)
+               n->mtu = mtu;
+
+       if(get_config_int(lookup_config(myself->connection->config_tree, "PMTU"), &mtu) && mtu < n->mtu)
+               n->mtu = mtu;
+
        /* Activate this connection */
 
        c->allow_request = ALL;