Move macros to access DHCP and AUTOIP data to headers, users may want to access the members

src/core/ipv4/autoip.c

@@ -94,8 +94,6 @@
 static err_t autoip_arp_announce(struct netif *netif);
 static void autoip_start_probing(struct netif *netif);
 
-#define netif_autoip_data(netif) ((struct autoip*)netif_get_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_AUTOIP))
-
 /**
  * @ingroup autoip 
  * Set a statically allocated struct autoip to work with.

src/core/ipv4/dhcp.c

@@ -209,8 +209,6 @@ static void dhcp_option_hostname(struct dhcp *dhcp, struct netif *netif);
 /* always add the DHCP options trailer to end and pad */
 static void dhcp_option_trailer(struct dhcp *dhcp);
 
-#define netif_dhcp_data(netif) ((struct dhcp*)netif_get_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_DHCP))
-
 /** Ensure DHCP PCB is allocated and bound */
 static err_t
 dhcp_inc_pcb_refcount(void)

src/include/lwip/autoip.h

@@ -88,6 +88,8 @@ u8_t autoip_supplied_address(const struct netif *netif);
 /* for lwIP internal use by ip4.c */
 u8_t autoip_accept_packet(struct netif *netif, const ip4_addr_t *addr);
 
+#define netif_autoip_data(netif) ((struct autoip*)netif_get_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_AUTOIP))
+
 #ifdef __cplusplus
 }
 #endif

src/include/lwip/dhcp.h

@@ -132,6 +132,8 @@ void dhcp_fine_tmr(void);
 extern void dhcp_set_ntp_servers(u8_t num_ntp_servers, const ip4_addr_t* ntp_server_addrs);
 #endif /* LWIP_DHCP_GET_NTP_SRV */
 
+#define netif_dhcp_data(netif) ((struct dhcp*)netif_get_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_DHCP))
+
 #ifdef __cplusplus
 }
 #endif