return ERR_BUF;
}
- /* outside local network? if so, this can neither be a global broadcast nor
- a subnet broadcast. */
- if (!ip_addr_netcmp(ipaddr, &(netif->ip_addr), &(netif->netmask)) &&
- !ip_addr_islinklocal(ipaddr) && !ip_addr_ismulticast(ipaddr)) {
-#if LWIP_AUTOIP
- struct ip_hdr *iphdr = (struct ip_hdr*)((u8_t*)q->payload +
- sizeof(struct eth_hdr));
- /* According to RFC 3297, chapter 2.6.2 (Forwarding Rules), a packet with
- a link-local source address must always be "directly to its destination
- on the same physical link. The host MUST NOT send the packet to any
- router for forwarding". */
- if (!ip_addr_islinklocal(&iphdr->src))
-#endif /* LWIP_AUTOIP */
- {
- /* interface has default gateway? */
- if (!ip_addr_isany(&netif->gw)) {
- /* send to hardware address of default gateway IP address */
- dst_addr = &(netif->gw);
- /* no default gateway available */
- } else {
- /* no route to destination error (default gateway missing) */
- return ERR_RTE;
- }
- }
- }
-#if LWIP_NETIF_HWADDRHINT
- if (netif->addr_hint != NULL) {
- /* per-pcb cached entry was given */
- u8_t etharp_cached_entry = *(netif->addr_hint);
- if (etharp_cached_entry < ARP_TABLE_SIZE) {
-#endif /* LWIP_NETIF_HWADDRHINT */
- if ((arp_table[etharp_cached_entry].state >= ETHARP_STATE_STABLE) &&
- (ip_addr_cmp(dst_addr, &arp_table[etharp_cached_entry].ipaddr))) {
- /* the per-pcb-cached entry is stable and the right one! */
- ETHARP_STATS_INC(etharp.cachehit);
- return etharp_output_to_arp_index(netif, q, etharp_cached_entry);
- }
-#if LWIP_NETIF_HWADDRHINT
- }
- }
-#endif /* LWIP_NETIF_HWADDRHINT */
-
/* Determine on destination hardware address. Broadcasts and multicasts
* are special, other IP addresses are looked up in the ARP table. */
/* unicast destination IP address? */
} else {
s8_t i;
+ /* outside local network? if so, this can neither be a global broadcast nor
+ a subnet broadcast. */
+ if (!ip_addr_netcmp(ipaddr, &(netif->ip_addr), &(netif->netmask)) &&
+ !ip_addr_islinklocal(ipaddr)) {
+#if LWIP_AUTOIP
+ struct ip_hdr *iphdr = (struct ip_hdr*)((u8_t*)q->payload +
+ sizeof(struct eth_hdr));
+ /* According to RFC 3297, chapter 2.6.2 (Forwarding Rules), a packet with
+ a link-local source address must always be "directly to its destination
+ on the same physical link. The host MUST NOT send the packet to any
+ router for forwarding". */
+ if (!ip_addr_islinklocal(&iphdr->src))
+#endif /* LWIP_AUTOIP */
+ {
+ /* interface has default gateway? */
+ if (!ip_addr_isany(&netif->gw)) {
+ /* send to hardware address of default gateway IP address */
+ dst_addr = &(netif->gw);
+ /* no default gateway available */
+ } else {
+ /* no route to destination error (default gateway missing) */
+ return ERR_RTE;
+ }
+ }
+ }
+#if LWIP_NETIF_HWADDRHINT
+ if (netif->addr_hint != NULL) {
+ /* per-pcb cached entry was given */
+ u8_t etharp_cached_entry = *(netif->addr_hint);
+ if (etharp_cached_entry < ARP_TABLE_SIZE) {
+#endif /* LWIP_NETIF_HWADDRHINT */
+ if ((arp_table[etharp_cached_entry].state >= ETHARP_STATE_STABLE) &&
+ (ip_addr_cmp(dst_addr, &arp_table[etharp_cached_entry].ipaddr))) {
+ /* the per-pcb-cached entry is stable and the right one! */
+ ETHARP_STATS_INC(etharp.cachehit);
+ return etharp_output_to_arp_index(netif, q, etharp_cached_entry);
+ }
+#if LWIP_NETIF_HWADDRHINT
+ }
+ }
+#endif /* LWIP_NETIF_HWADDRHINT */
+
/* find stable entry: do this here since this is a critical path for
throughput and etharp_find_entry() is kind of slow */
for (i = 0; i < ARP_TABLE_SIZE; i++) {