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- Updated subnet list handling. Subnets are added to two lists now, the

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owner's list and a global list. It is all fucked up but it probably
  works anyway, good enough for pre3 :).
This commit is contained in:
Guus Sliepen 2000-10-28 16:41:40 +00:00
parent 9c2f805255
commit d47d5932a3
5 changed files with 82 additions and 87 deletions
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35
src/connlist.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: connlist.c,v 1.1.2.8 2000/10/24 15:46:16 guus Exp $
$Id: connlist.c,v 1.1.2.9 2000/10/28 16:41:37 guus Exp $
*/
#include <syslog.h>
@ -153,39 +153,6 @@ cp
return p;
}
conn_list_t *lookup_conn_list_mac(mac_t address)
{
conn_list_t *p;
cp
for(p = conn_list; p != NULL; p = p->next)
if(lookup_subnet_mac(p->subnets, address))
break;
cp
return p;
}
conn_list_t *lookup_conn_list_ipv4(ipv4_t address)
{
conn_list_t *p;
cp
for(p = conn_list; p != NULL; p = p->next)
if(lookup_subnet_ipv4(p->subnets, address))
break;
cp
return p;
}
conn_list_t *lookup_conn_list_ipv6(ipv6_t address)
{
conn_list_t *p;
cp
for(p = conn_list; p != NULL; p = p->next)
if(lookup_subnet_ipv6(p->subnets, address))
break;
cp
return p;
}
/* Debugging */
void dump_conn_list(void)

5
src/connlist.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: connlist.h,v 1.1.2.4 2000/10/20 15:34:34 guus Exp $
$Id: connlist.h,v 1.1.2.5 2000/10/28 16:41:37 guus Exp $
*/
#ifndef __TINC_CONNLIST_H__
@ -86,9 +86,6 @@ extern void free_conn_list(conn_list_t *);
extern void add_conn_list(conn_list_t *);
extern void del_conn_list(conn_list_t *);
extern conn_list_t *lookup_id(char *);
extern conn_list_t *lookup_conn_list_mac(mac_t);
extern conn_list_t *lookup_conn_list_ipv4(ipv4_t);
extern conn_list_t *lookup_conn_list_ipv6(ipv6_t);
extern void dump_conn_list(void);
extern int read_host_config(conn_list_t *);

7
src/net.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.c,v 1.35.4.45 2000/10/24 15:46:16 guus Exp $
$Id: net.c,v 1.35.4.46 2000/10/28 16:41:38 guus Exp $
*/
#include "config.h"
@ -274,8 +274,9 @@ cp
int send_packet(ip_t to, vpn_packet_t *packet)
{
conn_list_t *cl;
subnet_t *subnet;
cp
if((cl = lookup_conn_list_ipv4(to)) == NULL)
if((subnet = lookup_subnet_ipv4(to)) == NULL)
{
if(debug_lvl >= DEBUG_TRAFFIC)
{
@ -285,6 +286,8 @@ cp
return -1;
}
cl = subnet->owner;
/* If we ourselves have indirectdata flag set, we should send only to our uplink! */

110
src/subnet.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: subnet.c,v 1.1.2.5 2000/10/24 15:46:18 guus Exp $
$Id: subnet.c,v 1.1.2.6 2000/10/28 16:41:40 guus Exp $
*/
#include "config.h"
@ -27,6 +27,10 @@
#include "subnet.h"
#include "net.h"
/* lists type of subnet */
subnet_t *subnet_list[SUBNET_TYPES] = { NULL };
/* Allocating and freeing space for subnets */
subnet_t *new_subnet(void)
@ -50,18 +54,28 @@ void subnet_add(conn_list_t *cl, subnet_t *subnet)
cp
subnet->owner = cl;
/* Link it into the owners list of subnets (unsorted) */
subnet->next = cl->subnets->next;
subnet->prev = NULL;
if(subnet->next)
subnet->next->prev = subnet;
cl->subnets = subnet;
/* And now add it to the global subnet list (sorted) */
/* Sort on size of subnet mask (IPv4 only at the moment!)
Three cases: cl->subnets = NULL -> just add this subnet
Three cases: subnet_list[] = NULL -> just add this subnet
insert before first -> add it in front of list
rest: insert after another subnet
*/
if(cl->subnets)
if(subnet_list[subnet->type])
{
p = q = cl->subnets;
p = q = subnet_list[subnet->type];
for(; p; p = p->next)
for(; p; p = p->global_next)
{
if(subnet->net.ipv4.mask >= p->net.ipv4.mask)
break;
@ -69,38 +83,56 @@ cp
q = p;
}
}
if(!cl->subnets || p == cl->subnets) /* First two cases */
if(!subnet_list[subnet->type] || p == subnet_list[subnet->type]) /* First two cases */
{
/* Insert in front */
subnet->next = cl->subnets;
subnet->prev = NULL;
cl->subnets = subnet;
subnet->global_next = subnet_list[subnet->type];
subnet->global_prev = NULL;
subnet_list[subnet->type] = subnet;
}
else /* Third case */
else /* Third case */
{
/* Insert after q */
subnet->next = q->next;
subnet->prev = q;
q->next = subnet;
subnet->global_next = q->global_next;
subnet->global_prev = q;
q->global_next = subnet;
}
if(subnet->next)
subnet->next->prev = subnet;
if(subnet->global_next)
subnet->global_next->global_prev = subnet;
cp
}
void subnet_del(subnet_t *subnet)
{
cp
/* Remove it from owner's list */
if(subnet->prev)
subnet->prev->next = subnet->next;
{
subnet->prev->next = subnet->next;
}
else
subnet->owner->subnets = subnet->next;
{
subnet->owner->subnets = subnet->next;
}
if(subnet->next)
subnet->next->prev = subnet->prev;
subnet->next->prev = subnet->prev;
/* Remove it from the global list */
if(subnet->global_prev)
{
subnet->global_prev->global_next = subnet->global_next;
}
else
{
subnet_list[subnet->type] = subnet->global_next;
}
subnet->global_next->global_prev = subnet->global_prev;
free_subnet(subnet);
cp
}
@ -185,10 +217,8 @@ cp
subnet->net.mac.address.x[3],
subnet->net.mac.address.x[4],
subnet->net.mac.address.x[5]);
break;
case SUBNET_IPV4:
asprintf(&netstr, "%d,%lx/%lx", subnet->type, subnet->net.ipv4.address, subnet->net.ipv4.mask);
break;
case SUBNET_IPV6:
asprintf(&netstr, "%d,%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx/%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx",
subnet->net.ipv6.address.x[0],
@ -207,7 +237,6 @@ cp
subnet->net.ipv6.mask.x[5],
subnet->net.ipv6.mask.x[6],
subnet->net.ipv6.mask.x[7]);
break;
default:
netstr = NULL;
}
@ -217,49 +246,44 @@ cp
/* Subnet lookup routines */
subnet_t *lookup_subnet_mac(subnet_t *subnets, mac_t address)
subnet_t *lookup_subnet_mac(mac_t address)
{
subnet_t *subnet;
cp
for(subnet = subnets; subnet != NULL; subnet = subnet->next)
for(subnet = subnet_list[SUBNET_MAC]; subnet != NULL; subnet = subnet->next)
{
if(subnet->type == SUBNET_MAC)
if(memcmp(&address, &subnet->net.mac.address, sizeof(address)) == 0)
break;
if(memcmp(&address, &subnet->net.mac.address, sizeof(address)) == 0)
break;
}
cp
return subnet;
}
subnet_t *lookup_subnet_ipv4(subnet_t *subnets, ipv4_t address)
subnet_t *lookup_subnet_ipv4(ipv4_t address)
{
subnet_t *subnet;
cp
for(subnet = subnets; subnet != NULL; subnet = subnet->next)
for(subnet = subnet_list[SUBNET_IPV4]; subnet != NULL; subnet = subnet->next)
{
if(subnet->type == SUBNET_IPV4)
if((address & subnet->net.ipv4.mask) == subnet->net.ipv4.address)
break;
if((address & subnet->net.ipv4.mask) == subnet->net.ipv4.address)
break;
}
cp
return subnet;
}
subnet_t *lookup_subnet_ipv6(subnet_t *subnets, ipv6_t address)
subnet_t *lookup_subnet_ipv6(ipv6_t address)
{
subnet_t *subnet;
int i;
cp
for(subnet = subnets; subnet != NULL; subnet = subnet->next)
for(subnet = subnet_list[SUBNET_IPV6]; subnet != NULL; subnet = subnet->next)
{
if(subnet->type == SUBNET_IPV6)
{
for(i=0; i<8; i++)
if((address.x[i] & subnet->net.ipv6.mask.x[i]) != subnet->net.ipv6.address.x[i])
break;
if(i=8)
break;
}
for(i=0; i<8; i++)
if((address.x[i] & subnet->net.ipv6.mask.x[i]) != subnet->net.ipv6.address.x[i])
break;
if(i=8)
break;
}
cp
return subnet;

12
src/subnet.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: subnet.h,v 1.1.2.3 2000/10/11 22:01:02 guus Exp $
$Id: subnet.h,v 1.1.2.4 2000/10/28 16:41:40 guus Exp $
*/
#ifndef __TINC_SUBNET_H__
@ -30,6 +30,7 @@ enum
SUBNET_MAC = 0,
SUBNET_IPV4,
SUBNET_IPV6,
SUBNET_TYPES /* Guardian */
};
typedef struct subnet_mac_t
@ -56,6 +57,9 @@ typedef struct subnet_t {
struct subnet_t *prev; /* previous subnet_t for this owner */
struct subnet_t *next; /* next subnet_t for this owner */
struct subnet_t *global_prev; /* previous subnet_t for this subnet type */
struct subnet_t *global_next; /* next subnet_t for this subnet type */
int type; /* subnet type (IPv4? IPv6? MAC? something even weirder?) */
/* And now for the actual subnet: */
@ -77,9 +81,9 @@ extern void subnet_add(struct conn_list_t *, subnet_t *);
extern void subnet_del(subnet_t *);
extern char *net2str(subnet_t *);
extern subnet_t *str2net(char *);
extern subnet_t *lookup_subnet_mac(subnet_t *, mac_t);
extern subnet_t *lookup_subnet_ipv4(subnet_t *, ipv4_t);
extern subnet_t *lookup_subnet_ipv6(subnet_t *, ipv6_t);
extern subnet_t *lookup_subnet_mac(mac_t);
extern subnet_t *lookup_subnet_ipv4(ipv4_t);
extern subnet_t *lookup_subnet_ipv6(ipv6_t);
#endif /* __TINC_SUBNET_H__ */