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factored out function for getting link local address in ds6 and made use of it in rpl for checking state of lladdress as DIOs should not be sent when tentative

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joxe 2010-05-09 17:52:37 +00:00
parent 1696e9f70f
commit adb00ed932
3 changed files with 34 additions and 10 deletions
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15
core/net/rpl/rpl-timers.c
View file

@ -32,7 +32,7 @@
*
* This file is part of the Contiki operating system.
*
* $Id: rpl-timers.c,v 1.2 2010/05/04 22:55:32 nvt-se Exp $
* $Id: rpl-timers.c,v 1.3 2010/05/09 17:52:37 joxe Exp $
*/
/**
* \file
@ -57,6 +57,10 @@ static void new_dio_interval(rpl_dag_t *dag);
static void handle_dio_timer(void *ptr);
static uint16_t next_dis;
/* dio_send_ok is true if the node is ready to send DIOs */
static uint8_t dio_send_ok;
/************************************************************************/
static void
handle_periodic_timer(void *ptr)
@ -118,6 +122,15 @@ handle_dio_timer(void *ptr)
dag = (rpl_dag_t *)ptr;
PRINTF("RPL: DIO Timer triggered\n");
if(!dio_send_ok) {
if(uip_ds6_get_link_local(ADDR_PREFERRED) != NULL) {
dio_send_ok = 1;
} else {
PRINTF("RPL: Postponing DIO transmission since link local addres is not ok\n");
ctimer_set(&dag->dio_timer, CLOCK_SECOND, &handle_dio_timer, dag);
return;
}
}
if(dag->dio_send) {
/* send DIO if counter is less than desired redundancy */

28
core/net/uip-ds6.c
View file

@ -586,6 +586,24 @@ uip_ds6_addr_lookup(uip_ipaddr_t * ipaddr)
return NULL;
}
/*---------------------------------------------------------------------------*/
/*
* get a link local address -
* state = -1 => any address is ok. Otherwise state = desired state of addr.
* (TENTATIVE, PREFERRED, DEPRECATED)
*/
uip_ds6_addr_t *
uip_ds6_get_link_local(int8_t state) {
for(locaddr = uip_ds6_if.addr_list;
locaddr < uip_ds6_if.addr_list + UIP_DS6_ADDR_NB; locaddr++) {
if((locaddr->isused) && (state == - 1 || locaddr->state == state)
&& (uip_is_addr_link_local(&locaddr->ipaddr))) {
return locaddr;
}
}
return NULL;
}
/*---------------------------------------------------------------------------*/
uip_ds6_maddr_t *
uip_ds6_maddr_add(uip_ipaddr_t * ipaddr)
@ -763,15 +781,7 @@ uip_ds6_select_src(uip_ipaddr_t *src, uip_ipaddr_t *dst)
}
}
} else {
// use link local
for(locaddr = uip_ds6_if.addr_list;
locaddr < uip_ds6_if.addr_list + UIP_DS6_ADDR_NB; locaddr++) {
if((locaddr->isused) && (locaddr->state == ADDR_PREFERRED)
&& (uip_is_addr_link_local(&locaddr->ipaddr))) {
matchaddr = locaddr;
break;
}
}
matchaddr = uip_ds6_get_link_local(ADDR_PREFERRED);
}
uip_ipaddr_copy(src, &matchaddr->ipaddr);

1
core/net/uip-ds6.h
View file

@ -340,6 +340,7 @@ uip_ds6_addr_t *uip_ds6_addr_add(uip_ipaddr_t *ipaddr,
unsigned long vlifetime, uint8_t type);
void uip_ds6_addr_rm(uip_ds6_addr_t *addr);
uip_ds6_addr_t *uip_ds6_addr_lookup(uip_ipaddr_t *ipaddr);
uip_ds6_addr_t *uip_ds6_get_link_local(int8_t state);
/** @} */