j3d1/tinc
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Make MSS clamping configurable, but enabled by default.

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It can either be set globally in tinc.conf, or per-node in host config files.
This commit is contained in:
Guus Sliepen 2010-01-16 20:16:33 +01:00
parent 95928f7c29
commit b455111184
6 changed files with 35 additions and 1 deletions
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13
src/protocol_auth.c
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@ -453,6 +453,11 @@ bool send_ack(connection_t *c) {
if(myself->options & OPTION_PMTU_DISCOVERY)
c->options |= OPTION_PMTU_DISCOVERY;
choice = myself->options & OPTION_CLAMP_MSS;
get_config_bool(lookup_config(c->config_tree, "ClampMSS"), &choice);
if(choice)
c->options |= OPTION_CLAMP_MSS;
get_config_int(lookup_config(c->config_tree, "Weight"), &c->estimated_weight);
return send_request(c, "%d %s %d %x", ACK, myport, c->estimated_weight, c->options);
@ -496,6 +501,7 @@ bool ack_h(connection_t *c) {
int weight, mtu;
uint32_t options;
node_t *n;
bool choice;
if(sscanf(c->buffer, "%*d " MAX_STRING " %d %x", hisport, &weight, &options) != 3) {
logger(LOG_ERR, "Got bad %s from %s (%s)", "ACK", c->name,
@ -536,6 +542,13 @@ bool ack_h(connection_t *c) {
if(get_config_int(lookup_config(myself->connection->config_tree, "PMTU"), &mtu) && mtu < n->mtu)
n->mtu = mtu;
if(get_config_bool(lookup_config(c->config_tree, "ClampMSS"), &choice)) {
if(choice)
c->options |= OPTION_CLAMP_MSS;
else
c->options &= ~OPTION_CLAMP_MSS;
}
/* Activate this connection */
c->allow_request = ALL;