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Merge pull request #1400 from pablocorbalan/nud-with-acks

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Refresh nbr reachable state after received IPv6 unicast message
This commit is contained in:
Simon Duquennoy 2016-11-23 12:00:13 +01:00 committed by GitHub
commit 86dbd590db
5 changed files with 51 additions and 23 deletions
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22
core/net/ipv6/uip-ds6-nbr.c
View File

@ -96,8 +96,12 @@ uip_ds6_nbr_add(const uip_ipaddr_t *ipaddr, const uip_lladdr_t *lladdr,
uip_packetqueue_new(&nbr->packethandle);
#endif /* UIP_CONF_IPV6_QUEUE_PKT */
#if UIP_ND6_SEND_NA
/* timers are set separately, for now we put them in expired state */
stimer_set(&nbr->reachable, 0);
if(nbr->state == NBR_REACHABLE) {
stimer_set(&nbr->reachable, UIP_ND6_REACHABLE_TIME / 1000);
} else {
/* We set the timer in expired state */
stimer_set(&nbr->reachable, 0);
}
stimer_set(&nbr->sendns, 0);
nbr->nscount = 0;
#endif /* UIP_ND6_SEND_NA */
@ -322,6 +326,20 @@ uip_ds6_neighbor_periodic(void)
}
}
/*---------------------------------------------------------------------------*/
#if UIP_ND6_SEND_NA
void
uip_ds6_nbr_refresh_reachable_state(const uip_ipaddr_t *ipaddr)
{
uip_ds6_nbr_t *nbr;
nbr = uip_ds6_nbr_lookup(ipaddr);
if(nbr != NULL) {
nbr->state = NBR_REACHABLE;
nbr->nscount = 0;
stimer_set(&nbr->reachable, UIP_ND6_REACHABLE_TIME / 1000);
}
}
#endif /* UIP_ND6_SEND_NA */
/*---------------------------------------------------------------------------*/
uip_ds6_nbr_t *
uip_ds6_get_least_lifetime_neighbor(void)
{

11
core/net/ipv6/uip-ds6-nbr.h
View File

@ -98,6 +98,17 @@ void uip_ds6_link_neighbor_callback(int status, int numtx);
void uip_ds6_neighbor_periodic(void);
int uip_ds6_nbr_num(void);
#if UIP_ND6_SEND_NA
/**
* \brief Refresh the reachable state of a neighbor. This function
* may be called when a node receives an IPv6 message that confirms the
* reachability of a neighbor.
* \param ipaddr pointer to the IPv6 address whose neighbor reachability state
* should be refreshed.
*/
void uip_ds6_nbr_refresh_reachable_state(const uip_ipaddr_t *ipaddr);
#endif /* UIP_ND6_SEND_NA */
/**
* \brief
* This searches inside the neighbor table for the neighbor that is about to

22
core/net/ipv6/uip-nd6.c
View File

@ -522,14 +522,11 @@ na_input(void)
goto discard;
}
if(is_solicited) {
nbr->state = NBR_REACHABLE;
nbr->nscount = 0;
/* reachable time is stored in ms */
stimer_set(&(nbr->reachable), uip_ds6_if.reachable_time / 1000);
} else {
/* Note: No need to refresh the state of the nbr here.
* It has already been refreshed upon receiving the unicast IPv6 ND packet.
* See: uip_ds6_nbr_refresh_reachable_state()
*/
if(!is_solicited) {
nbr->state = NBR_STALE;
}
nbr->isrouter = is_router;
@ -552,11 +549,10 @@ na_input(void)
goto discard;
}
}
if(is_solicited) {
nbr->state = NBR_REACHABLE;
/* reachable time is stored in ms */
stimer_set(&(nbr->reachable), uip_ds6_if.reachable_time / 1000);
}
/* Note: No need to refresh the state of the nbr here.
* It has already been refreshed upon receiving the unicast IPv6 ND packet.
* See: uip_ds6_nbr_refresh_reachable_state()
*/
}
}
if(nbr->isrouter && !is_router) {

11
core/net/ipv6/uip6.c
View File

@ -85,6 +85,10 @@
#include "rpl/rpl-private.h"
#endif
#if UIP_ND6_SEND_NA
#include "net/ipv6/uip-ds6-nbr.h"
#endif /* UIP_ND6_SEND_NA */
#include <string.h>
/*---------------------------------------------------------------------------*/
@ -1151,6 +1155,13 @@ uip_process(uint8_t flag)
goto drop;
}
/* Refresh neighbor state after receiving a unicast message */
#if UIP_ND6_SEND_NA
if(!uip_is_addr_mcast(&UIP_IP_BUF->destipaddr)) {
uip_ds6_nbr_refresh_reachable_state(&UIP_IP_BUF->srcipaddr);
}
#endif /* UIP_ND6_SEND_NA */
#if UIP_CONF_ROUTER
/*
* Next header field processing. In IPv6, we can have extension headers,

8
core/net/rpl/rpl-icmp6.c
View File

@ -201,14 +201,6 @@ rpl_icmp6_update_nbr_table(uip_ipaddr_t *from, nbr_table_reason_t reason, void *
}
}
if(nbr != NULL) {
#if UIP_ND6_SEND_NA
/* set reachable timer if we added or found the nbr entry - and update
neighbor entry to reachable to avoid sending NS/NA, etc. */
stimer_set(&nbr->reachable, UIP_ND6_REACHABLE_TIME / 1000);
nbr->state = NBR_REACHABLE;
#endif /* UIP_ND6_SEND_NA */
}
return nbr;
}
/*---------------------------------------------------------------------------*/