void recv_rpl_dao(void)
{
rpl_dodag_t *my_dodag = rpl_get_my_dodag();
if(my_dodag == NULL) {
printf("[Error] got DAO without beeing part of a Dodag\n");
return;
}
ipv6_buf = get_rpl_ipv6_buf();
rpl_dao_buf = get_rpl_dao_buf();
int len = DAO_BASE_LEN;
uint8_t increment_seq = 0;
while(len < (ipv6_buf->length - ICMPV6_HDR_LEN)) {
rpl_opt_buf = get_rpl_opt_buf(len);
switch(rpl_opt_buf->type) {
case(RPL_OPT_PAD1): {
len += 1;
break;
}
case(RPL_OPT_PADN): {
len += rpl_opt_buf->length + 2;
break;
}
case(RPL_OPT_DAG_METRIC_CONTAINER): {
len += rpl_opt_buf->length + 2;
break;
}
case(RPL_OPT_TARGET): {
rpl_opt_target_buf = get_rpl_opt_target_buf(len);
if(rpl_opt_target_buf->prefix_length != RPL_DODAG_ID_LEN) {
printf("prefixes are not supported yet");
break;
}
len += rpl_opt_target_buf->length + 2;
rpl_opt_transit_buf = get_rpl_opt_transit_buf(len);
if(rpl_opt_transit_buf->type != RPL_OPT_TRANSIT) {
printf("[Error] - no Transit Inforamtion to Target Option, type = %d\n", rpl_opt_transit_buf->type);
break;
}
len += rpl_opt_transit_buf->length + 2;
/* Die eigentliche Lebenszeit einer Route errechnet sich aus (Lifetime aus DAO) * (Lifetime Unit) Sekunden */
rpl_add_routing_entry(&rpl_opt_target_buf->target, &ipv6_buf->srcaddr, rpl_opt_transit_buf->path_lifetime * my_dodag->lifetime_unit);
/* puts("Updated route \n"); */
increment_seq = 1;
break;
}
case(RPL_OPT_TRANSIT): {
len += rpl_opt_buf->length + 2;
break;
}
case(RPL_OPT_TARGET_DESC): {
len += rpl_opt_buf->length + 2;
break;
}
default:
return;
}
}
send_DAO_ACK(&ipv6_buf->srcaddr);
if(increment_seq) {
RPL_COUNTER_INCREMENT(my_dodag->dao_seq);
delay_dao();
}
}
void recv_rpl_dao(void)
{
rpl_dodag_t *my_dodag = rpl_get_my_dodag();
if (my_dodag == NULL) {
DEBUG("[Error] got DAO although not a DODAG\n");
return;
}
ipv6_buf = get_rpl_ipv6_buf();
rpl_dao_buf = get_rpl_dao_buf();
int len = DAO_BASE_LEN;
uint8_t increment_seq = 0;
while (len < (ipv6_buf->length - ICMPV6_HDR_LEN)) {
rpl_opt_buf = get_rpl_opt_buf(len);
switch (rpl_opt_buf->type) {
case (RPL_OPT_PAD1): {
len += 1;
break;
}
case (RPL_OPT_PADN): {
len += rpl_opt_buf->length + 2;
break;
}
case (RPL_OPT_DAG_METRIC_CONTAINER): {
len += rpl_opt_buf->length + 2;
break;
}
case (RPL_OPT_TARGET): {
rpl_opt_target_buf = get_rpl_opt_target_buf(len);
if (rpl_opt_target_buf->prefix_length != RPL_DODAG_ID_LEN) {
DEBUG("prefixes are not supported yet");
break;
}
len += rpl_opt_target_buf->length + 2;
rpl_opt_transit_buf = get_rpl_opt_transit_buf(len);
if (rpl_opt_transit_buf->type != RPL_OPT_TRANSIT) {
DEBUG("[Error] - no transit information for target option type = %d\n", rpl_opt_transit_buf->type);
break;
}
len += rpl_opt_transit_buf->length + 2;
/* route lifetime seconds = (DAO lifetime) * (Unit Lifetime) */
rpl_add_routing_entry(&rpl_opt_target_buf->target, &ipv6_buf->srcaddr, rpl_opt_transit_buf->path_lifetime * my_dodag->lifetime_unit);
increment_seq = 1;
break;
}
case (RPL_OPT_TRANSIT): {
len += rpl_opt_buf->length + 2;
break;
}
case (RPL_OPT_TARGET_DESC): {
len += rpl_opt_buf->length + 2;
break;
}
default:
return;
}
}
send_DAO_ACK(&ipv6_buf->srcaddr);
if (increment_seq) {
RPL_COUNTER_INCREMENT(my_dodag->dao_seq);
delay_dao();
}
}
void recv_rpl_dao(void)
{
DEBUG("%s, %d: Received DAO with ", __FILE__, __LINE__);
rpl_dodag_t *my_dodag = rpl_get_my_dodag();
if (my_dodag == NULL) {
DEBUG("%s, %d: [Error] got DAO although not a DODAG\n", __FILE__, __LINE__);
return;
}
ipv6_buf = get_rpl_ipv6_buf();
rpl_dao_buf = get_rpl_dao_buf();
DEBUG("instance %04X ", rpl_dao_buf->rpl_instanceid);
DEBUG("sequence %04X\n", rpl_dao_buf->dao_sequence);
int len = DAO_BASE_LEN;
uint8_t increment_seq = 0;
while (len < (NTOHS(ipv6_buf->length) - ICMPV6_HDR_LEN)) {
rpl_opt_buf = get_rpl_opt_buf(len);
switch (rpl_opt_buf->type) {
case (RPL_OPT_PAD1): {
len += 1;
break;
}
case (RPL_OPT_PADN): {
len += rpl_opt_buf->length + 2;
break;
}
case (RPL_OPT_DAG_METRIC_CONTAINER): {
len += rpl_opt_buf->length + 2;
break;
}
case (RPL_OPT_TARGET): {
rpl_opt_target_buf = get_rpl_opt_target_buf(len);
if (rpl_opt_target_buf->prefix_length != RPL_DODAG_ID_LEN) {
DEBUG("%s, %d: prefixes are not supported yet", __FILE__, __LINE__);
break;
}
len += rpl_opt_target_buf->length + 2;
rpl_opt_transit_buf = get_rpl_opt_transit_buf(len);
if (rpl_opt_transit_buf->type != RPL_OPT_TRANSIT) {
DEBUG("%s, %d: [Error] - no transit information for target option type = %d\n", __FILE__, __LINE__, rpl_opt_transit_buf->type);
break;
}
len += rpl_opt_transit_buf->length + 2;
/* route lifetime seconds = (DAO lifetime) * (Unit Lifetime) */
DEBUG("%s, %d: Adding routing information: Target: %s, Source: %s, Lifetime: %u\n",
__FILE__, __LINE__,
ipv6_addr_to_str(addr_str, IPV6_MAX_ADDR_STR_LEN, &ipv6_buf->srcaddr),
ipv6_addr_to_str(addr_str, IPV6_MAX_ADDR_STR_LEN, &ipv6_buf->srcaddr),
(rpl_opt_transit_buf->path_lifetime * my_dodag->lifetime_unit));
rpl_add_routing_entry(&rpl_opt_target_buf->target, &ipv6_buf->srcaddr, rpl_opt_transit_buf->path_lifetime * my_dodag->lifetime_unit);
increment_seq = 1;
break;
}
case (RPL_OPT_TRANSIT): {
len += rpl_opt_buf->length + 2;
break;
}
case (RPL_OPT_TARGET_DESC): {
len += rpl_opt_buf->length + 2;
break;
}
default:
return;
}
}
send_DAO_ACK(&ipv6_buf->srcaddr);
if (increment_seq) {
RPL_COUNTER_INCREMENT(my_dodag->dao_seq);
delay_dao();
}
}