From d922db253cd098bc038449e5c591cc94c1019952 Mon Sep 17 00:00:00 2001
From: Guus Sliepen <guus@tinc-vpn.org>
Date: Sat, 24 Oct 2009 21:35:40 +0200
Subject: [PATCH] Make maxmtu equal to minmtu when fixing the path MTU to a
node.
This ensures MTU probes used to ping nodes are not too large, and prevents
restarting MTU probing unnecessarily.
---
src/net_packet.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/src/net_packet.c b/src/net_packet.c
index 626f8b1c..3466f87e 100644
--- a/src/net_packet.c
+++ b/src/net_packet.c
@@ -91,6 +91,10 @@ void send_mtu_probe(node_t *n) {
}
if(n->mtuprobes == 30 || (n->mtuprobes < 30 && n->minmtu >= n->maxmtu)) {
+ if(n->minmtu > n->maxmtu)
+ n->minmtu = n->maxmtu;
+ else
+ n->maxmtu = n->minmtu;
n->mtu = n->minmtu;
ifdebug(TRAFFIC) logger(LOG_INFO, "Fixing MTU of %s (%s) to %d after %d probes", n->name, n->hostname, n->mtu, n->mtuprobes);
n->mtuprobes = 31;
--
2.39.5