MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- $Id$
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "system.h"
/* RFC 1071 */
-static uint16_t inet_checksum(void *data, int len, uint16_t prevsum)
-{
+static uint16_t inet_checksum(void *data, int len, uint16_t prevsum) {
uint16_t *p = data;
uint32_t checksum = prevsum ^ 0xFFFF;
memcpy(&packet->data[6], &tmp, sizeof tmp);
}
-static void learn_mac(mac_t *address)
-{
+static void learn_mac(mac_t *address) {
subnet_t *subnet;
avl_node_t *node;
connection_t *c;
- cp();
-
subnet = lookup_subnet_mac(address);
/* If we don't know this MAC address yet, store it */
subnet->expires = now + macexpire;
}
-void age_subnets(void)
-{
+void age_subnets(void) {
subnet_t *s;
connection_t *c;
avl_node_t *node, *next, *node2;
- cp();
-
for(node = myself->subnet_tree->head; node; node = next) {
next = node->next;
s = node->data;
/* RFC 792 */
-static void route_ipv4_unreachable(node_t *source, vpn_packet_t *packet, uint8_t type, uint8_t code)
-{
+static void route_ipv4_unreachable(node_t *source, vpn_packet_t *packet, uint8_t type, uint8_t code) {
struct ip ip = {0};
struct icmp icmp = {0};
if(ratelimit(3))
return;
- cp();
-
/* Swap Ethernet source and destination addresses */
swap_mac_addresses(packet);
uint8_t *offset;
uint16_t ip_off, origf;
- cp();
-
memcpy(&ip, packet->data + ether_size, ip_size);
fragment.priority = packet->priority;
}
}
-static void route_ipv4_unicast(node_t *source, vpn_packet_t *packet)
-{
+static void route_ipv4_unicast(node_t *source, vpn_packet_t *packet) {
subnet_t *subnet;
node_t *via;
ipv4_t dest;
- cp();
-
memcpy(&dest, &packet->data[30], sizeof dest);
subnet = lookup_subnet_ipv4(&dest);
send_packet(subnet->owner, packet);
}
-static void route_ipv4(node_t *source, vpn_packet_t *packet)
-{
- cp();
-
+static void route_ipv4(node_t *source, vpn_packet_t *packet) {
if(!checklength(source, packet, ether_size + ip_size))
return;
/* RFC 2463 */
-static void route_ipv6_unreachable(node_t *source, vpn_packet_t *packet, uint8_t type, uint8_t code)
-{
+static void route_ipv6_unreachable(node_t *source, vpn_packet_t *packet, uint8_t type, uint8_t code) {
struct ip6_hdr ip6;
struct icmp6_hdr icmp6 = {0};
uint16_t checksum;
if(ratelimit(3))
return;
- cp();
-
/* Swap Ethernet source and destination addresses */
swap_mac_addresses(packet);
send_packet(source, packet);
}
-static void route_ipv6_unicast(node_t *source, vpn_packet_t *packet)
-{
+static void route_ipv6_unicast(node_t *source, vpn_packet_t *packet) {
subnet_t *subnet;
node_t *via;
ipv6_t dest;
- cp();
-
memcpy(&dest, &packet->data[38], sizeof dest);
subnet = lookup_subnet_ipv6(&dest);
/* RFC 2461 */
-static void route_neighborsol(node_t *source, vpn_packet_t *packet)
-{
+static void route_neighborsol(node_t *source, vpn_packet_t *packet) {
struct ip6_hdr ip6;
struct nd_neighbor_solicit ns;
struct nd_opt_hdr opt;
uint32_t next;
} pseudo;
- cp();
-
if(!checklength(source, packet, ether_size + ip6_size + ns_size))
return;
send_packet(source, packet);
}
-static void route_ipv6(node_t *source, vpn_packet_t *packet)
-{
- cp();
-
+static void route_ipv6(node_t *source, vpn_packet_t *packet) {
if(!checklength(source, packet, ether_size + ip6_size))
return;
/* RFC 826 */
-static void route_arp(node_t *source, vpn_packet_t *packet)
-{
+static void route_arp(node_t *source, vpn_packet_t *packet) {
struct ether_arp arp;
subnet_t *subnet;
struct in_addr addr;
- cp();
-
if(!checklength(source, packet, ether_size + arp_size))
return;
send_packet(source, packet);
}
-static void route_mac(node_t *source, vpn_packet_t *packet)
-{
+static void route_mac(node_t *source, vpn_packet_t *packet) {
subnet_t *subnet;
mac_t dest;
- cp();
-
-
/* Learn source address */
if(source == myself) {
} else {
fragment_ipv4_packet(via, packet);
}
+ return;
} else if(type == ETH_P_IPV6) {
packet->len = via->mtu;
route_ipv6_unreachable(source, packet, ICMP6_PACKET_TOO_BIG, 0);
- } else
- ifdebug(TRAFFIC) logger(LOG_INFO, _("Large packet of unhandled type %hx dropped"), type);
-
- return;
+ return;
+ }
}
send_packet(subnet->owner, packet);
}
-
-void route(node_t *source, vpn_packet_t *packet)
-{
- cp();
-
+void route(node_t *source, vpn_packet_t *packet) {
if(!checklength(source, packet, ether_size))
return;