deac/osd-contiki
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

No-Path DAO Propagation

Browse source
This commit is contained in:
Sébastien Dawans 2013-07-25 10:39:39 +02:00
parent 4108066f0a
commit c4a121bf18
3 changed files with 33 additions and 10 deletions
Download patch file Download diff file Expand all files Collapse all files

28
core/net/rpl/rpl-icmp6.c
View file

@ -709,20 +709,28 @@ dao_input(void)
void
dao_output(rpl_parent_t *n, uint8_t lifetime)
{
rpl_dag_t *dag;
rpl_instance_t *instance;
unsigned char *buffer;
uint8_t prefixlen;
uip_ipaddr_t prefix;
int pos;
/* Destination Advertisement Object */
uip_ipaddr_t prefix;
if(get_global_addr(&prefix) == 0) {
PRINTF("RPL: No global address set for this node - suppressing DAO\n");
return;
}
dao_output_target(n, &prefix, lifetime);
}
/*---------------------------------------------------------------------------*/
void
dao_output_target(rpl_parent_t *n, uip_ipaddr_t *prefix, uint8_t lifetime)
{
rpl_dag_t *dag;
rpl_instance_t *instance;
unsigned char *buffer;
uint8_t prefixlen;
int pos;
/* Destination Advertisement Object */
dag = n->dag;
instance = dag->instance;
@ -752,12 +760,12 @@ dao_output(rpl_parent_t *n, uint8_t lifetime)
#endif /* RPL_DAO_SPECIFY_DAG */
/* create target subopt */
prefixlen = sizeof(prefix) * CHAR_BIT;
prefixlen = sizeof(*prefix) * CHAR_BIT;
buffer[pos++] = RPL_OPTION_TARGET;
buffer[pos++] = 2 + ((prefixlen + 7) / CHAR_BIT);
buffer[pos++] = 0; /* reserved */
buffer[pos++] = prefixlen;
memcpy(buffer + pos, &prefix, (prefixlen + 7) / CHAR_BIT);
memcpy(buffer + pos, prefix, (prefixlen + 7) / CHAR_BIT);
pos += ((prefixlen + 7) / CHAR_BIT);
/* Create a transit information sub-option. */
@ -769,7 +777,7 @@ dao_output(rpl_parent_t *n, uint8_t lifetime)
buffer[pos++] = lifetime;
PRINTF("RPL: Sending DAO with prefix ");
PRINT6ADDR(&prefix);
PRINT6ADDR(prefix);
PRINTF(" to ");
PRINT6ADDR(&n->addr);
PRINTF("\n");