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nd6: update addr_hint only if the index has actually changed

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This commit is contained in:
Simon Goldschmidt 2020-02-03 20:57:28 +01:00
parent 4c15191b1d
commit 177bb6ca06
1 changed files with 5 additions and 6 deletions
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3
src/core/ipv6/nd6.c
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@ -2008,14 +2008,13 @@ nd6_get_next_hop_entry(const ip6_addr_t *ip6addr, struct netif *netif)
ip6_addr_copy(destination_cache[nd6_cached_destination_index].next_hop_addr, default_router_list[i].neighbor_entry->next_hop_address); ip6_addr_copy(destination_cache[nd6_cached_destination_index].next_hop_addr, default_router_list[i].neighbor_entry->next_hop_address);
} }
} }
}
#if LWIP_NETIF_HWADDRHINT #if LWIP_NETIF_HWADDRHINT
if (netif->hints != NULL) { if (netif->hints != NULL) {
/* per-pcb cached entry was given */ /* per-pcb cached entry was given */
netif->hints->addr_hint = nd6_cached_destination_index; netif->hints->addr_hint = nd6_cached_destination_index;
} }
#endif /* LWIP_NETIF_HWADDRHINT */ #endif /* LWIP_NETIF_HWADDRHINT */
}
/* Look in neighbor cache for the next-hop address. */ /* Look in neighbor cache for the next-hop address. */
if (ip6_addr_cmp(&(destination_cache[nd6_cached_destination_index].next_hop_addr), if (ip6_addr_cmp(&(destination_cache[nd6_cached_destination_index].next_hop_addr),