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Fix bug #53667: ARP table max size is to small

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arp table functions, nd6 destination cache and struct netif_hint
can now be u16_t or u8_t depending on table size, so up to 32K
entries can be used in these tables (s16_t)

Signed-off-by: Simon Goldschmidt <goldsimon@gmx.de>
This commit is contained in:
Simon Goldschmidt
2018-05-17 21:51:46 +02:00
parent 0f165ff136
commit 0c2fdfcf42
3 changed files with 55 additions and 49 deletions
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14
src/core/ipv6/nd6.c
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@@ -85,7 +85,7 @@ u32_t retrans_timer = LWIP_ND6_RETRANS_TIMER; /* @todo implement this value in t
/* Index for cache entries. */
static u8_t nd6_cached_neighbor_index;
static u8_t nd6_cached_destination_index;
static netif_addr_idx_t nd6_cached_destination_index;
/* Multicast address holder. */
static ip6_addr_t multicast_address;
@@ -105,9 +105,9 @@ static union ra_options nd6_ra_buffer;
static s8_t nd6_find_neighbor_cache_entry(const ip6_addr_t *ip6addr);
static s8_t nd6_new_neighbor_cache_entry(void);
static void nd6_free_neighbor_cache_entry(s8_t i);
static s8_t nd6_find_destination_cache_entry(const ip6_addr_t *ip6addr);
static s8_t nd6_new_destination_cache_entry(void);
static s8_t nd6_is_prefix_in_netif(const ip6_addr_t *ip6addr, struct netif *netif);
static s16_t nd6_find_destination_cache_entry(const ip6_addr_t *ip6addr);
static s16_t nd6_new_destination_cache_entry(void);
static int nd6_is_prefix_in_netif(const ip6_addr_t *ip6addr, struct netif *netif);
static s8_t nd6_select_router(const ip6_addr_t *ip6addr, struct netif *netif);
static s8_t nd6_get_router(const ip6_addr_t *router_addr, struct netif *netif);
static s8_t nd6_new_router(const ip6_addr_t *router_addr, struct netif *netif);
@@ -1561,7 +1561,7 @@ nd6_find_destination_cache_entry(const ip6_addr_t *ip6addr)
* @return The destination cache entry index that was created, -1 if no
* entry was created
*/
static s8_t
static s16_t
nd6_new_destination_cache_entry(void)
{
s8_t i, j;
@@ -1609,7 +1609,7 @@ nd6_clear_destination_cache(void)
* @param ip6addr the IPv6 address to match
* @return 1 if the address is on-link, 0 otherwise
*/
static s8_t
static int
nd6_is_prefix_in_netif(const ip6_addr_t *ip6addr, struct netif *netif)
{
s8_t i;
@@ -1916,7 +1916,7 @@ nd6_get_next_hop_entry(const ip6_addr_t *ip6addr, struct netif *netif)
#if LWIP_NETIF_HWADDRHINT
if (netif->hints != NULL) {
/* per-pcb cached entry was given */
u8_t addr_hint = netif->hints->addr_hint;
netif_addr_idx_t addr_hint = netif->hints->addr_hint;
if (addr_hint < LWIP_ND6_NUM_DESTINATIONS) {
nd6_cached_destination_index = addr_hint;
}