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If "PriorityInheritance = yes" is specified in tinc.conf, the value of the

Browse source 
TOS field of the tunneled packets will be passed on to the UDP packets tinc
sends out.
This commit is contained in:
Guus Sliepen 2002-03-01 12:26:56 +00:00
parent 80ea653e8d
commit c2b738e7b5
4 changed files with 24 additions and 5 deletions
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3
src/net.h
View file

@ -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: net.h,v 1.9.4.43 2002/02/26 23:26:41 guus Exp $
$Id: net.h,v 1.9.4.44 2002/03/01 12:26:56 guus Exp $
*/
#ifndef __TINC_NET_H__
@ -74,6 +74,7 @@ typedef union {
typedef struct vpn_packet_t {
length_t len; /* the actual number of bytes in the `data' field */
int priority; /* priority or TOS */
unsigned int seqno; /* 32 bits sequence number (network byte order of course) */
unsigned char data[MAXSIZE];
} vpn_packet_t;

17
src/net_packet.c
View file

@ -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: net_packet.c,v 1.1.2.5 2002/02/26 23:26:41 guus Exp $
$Id: net_packet.c,v 1.1.2.6 2002/03/01 12:26:56 guus Exp $
*/
#include "config.h"
@ -190,6 +190,8 @@ void send_udppacket(node_t *n, vpn_packet_t *inpkt)
long int complen = MTU + 12;
EVP_CIPHER_CTX ctx;
vpn_packet_t *copy;
static int priority = 0;
int origpriority;
cp
if(!n->status.validkey)
{
@ -212,6 +214,7 @@ cp
}
origlen = inpkt->len;
origpriority = inpkt->priority;
/* Compress the packet */
@ -258,6 +261,15 @@ cp
/* Send the packet */
if(priorityinheritance && origpriority != priority)
{
priority = origpriority;
if(debug_lvl >= DEBUG_TRAFFIC)
syslog(LOG_DEBUG, _("Setting outgoing packet priority to %d"), priority);
if(setsockopt(udp_socket[0], SOL_IP, IP_TOS, &priority, sizeof(priority))) /* SO_PRIORITY doesn't seem to work */
syslog(LOG_ERR, _("System call `%s' failed: %s"), "setsockopt", strerror(errno));
}
if((sendto(udp_socket[0], (char *)&inpkt->seqno, inpkt->len, 0, &(n->address.sa), SALEN(n->address.sa))) < 0)
{
syslog(LOG_ERR, _("Error sending packet to %s (%s): %s"),
@ -362,7 +374,8 @@ cp
{
syslog(LOG_ERR, _("This is a bug: %s:%d: %d:%s"),
__FILE__, __LINE__, sock, strerror(errno));
return;
cp_trace();
exit(1);
}
if(x)
{

6
src/route.c
View file

@ -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: route.c,v 1.1.2.24 2002/02/20 16:04:59 guus Exp $
$Id: route.c,v 1.1.2.25 2002/03/01 12:26:56 guus Exp $
*/
#include "config.h"
@ -51,6 +51,7 @@
#include "system.h"
int routing_mode = RMODE_ROUTER;
int priorityinheritance = 0;
subnet_t mymac;
void learn_mac(mac_t *address)
@ -107,6 +108,9 @@ node_t *route_ipv4(vpn_packet_t *packet)
{
subnet_t *subnet;
cp
if(priorityinheritance)
packet->priority = packet->data[15];
subnet = lookup_subnet_ipv4((ipv4_t *)&packet->data[30]);
cp
if(!subnet)

3
src/route.h
View file

@ -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: route.h,v 1.1.2.5 2002/02/10 21:57:54 guus Exp $
$Id: route.h,v 1.1.2.6 2002/03/01 12:26:56 guus Exp $
*/
#ifndef __TINC_ROUTE_H__
@ -31,6 +31,7 @@ enum
};
extern int routing_mode;
extern int priorityinheritance;
extern void route_incoming(node_t *, vpn_packet_t *);
extern void route_outgoing(vpn_packet_t *);