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fixed bug #47652: there is always a delay to send the first Neighbor Solicitation for the new add INCOMPLETE state neighbor entry

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This commit is contained in:
goldsimon 2016-08-23 15:50:48 +02:00
parent fd5b34ae43
commit e4c74109cd
1 changed files with 18 additions and 4 deletions
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22
src/core/ipv6/nd6.c
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@ -102,6 +102,7 @@ static s8_t nd6_new_onlink_prefix(ip6_addr_t *prefix, struct netif *netif);
#define ND6_SEND_FLAG_ALLNODES_DEST 0x02
static void nd6_send_ns(struct netif *netif, const ip6_addr_t *target_addr, u8_t flags);
static void nd6_send_na(struct netif *netif, const ip6_addr_t *target_addr, u8_t flags);
static void nd6_send_neighbor_cache_probe(struct nd6_neighbor_cache_entry *entry, u8_t flags);
#if LWIP_IPV6_SEND_ROUTER_SOLICIT
static err_t nd6_send_rs(struct netif *netif);
#endif /* LWIP_IPV6_SEND_ROUTER_SOLICIT */
@ -673,7 +674,7 @@ nd6_tmr(void)
} else {
/* Send a NS for this entry. */
neighbor_cache[i].counter.probes_sent++;
nd6_send_ns(neighbor_cache[i].netif, &(neighbor_cache[i].next_hop_address), ND6_SEND_FLAG_MULTICAST_DEST);
nd6_send_neighbor_cache_probe(&neighbor_cache[i], ND6_SEND_FLAG_MULTICAST_DEST);
}
break;
case ND6_REACHABLE:
@ -709,7 +710,7 @@ nd6_tmr(void)
} else {
/* Send a NS for this entry. */
neighbor_cache[i].counter.probes_sent++;
nd6_send_ns(neighbor_cache[i].netif, &(neighbor_cache[i].next_hop_address), 0);
nd6_send_neighbor_cache_probe(&neighbor_cache[i], 0);
}
break;
case ND6_NO_ENTRY:
@ -844,6 +845,17 @@ nd6_tmr(void)
}
/** Send a neighbor solicitation message for a specific neighbor cache entry
*
* @param entry the neightbor cache entry for wich to send the message
* @param flags one of ND6_SEND_FLAG_*
*/
static void
nd6_send_neighbor_cache_probe(struct nd6_neighbor_cache_entry *entry, u8_t flags)
{
nd6_send_ns(entry->netif, &entry->next_hop_address, flags);
}
/**
* Send a neighbor solicitation message
*
@ -1403,7 +1415,8 @@ nd6_new_router(const ip6_addr_t *router_addr, struct netif *netif)
neighbor_cache[neighbor_index].netif = netif;
neighbor_cache[neighbor_index].q = NULL;
neighbor_cache[neighbor_index].state = ND6_INCOMPLETE;
neighbor_cache[neighbor_index].counter.probes_sent = 0;
neighbor_cache[neighbor_index].counter.probes_sent = 1;
nd6_send_neighbor_cache_probe(&neighbor_cache[neighbor_index], ND6_SEND_FLAG_MULTICAST_DEST);
}
/* Mark neighbor as router. */
@ -1587,7 +1600,8 @@ nd6_get_next_hop_entry(const ip6_addr_t *ip6addr, struct netif *netif)
neighbor_cache[i].isrouter = 0;
neighbor_cache[i].netif = netif;
neighbor_cache[i].state = ND6_INCOMPLETE;
neighbor_cache[i].counter.probes_sent = 0;
neighbor_cache[i].counter.probes_sent = 1;
nd6_send_neighbor_cache_probe(&neighbor_cache[i], ND6_SEND_FLAG_MULTICAST_DEST);
}
}