Squashed 'lib/lwip/lwip/' content from commit 0a0452b2c39b

git-subtree-dir: lib/lwip/lwip
git-subtree-split: 0a0452b2c39bdd91e252aef045c115f88f6ca773
diff --git a/contrib/examples/example_app/lwipcfg.h.example b/contrib/examples/example_app/lwipcfg.h.example
new file mode 100644
index 0000000..b21e19b
--- /dev/null
+++ b/contrib/examples/example_app/lwipcfg.h.example
@@ -0,0 +1,77 @@
+/**
+ * Additional settings for the example app.
+ * Copy this to lwipcfg.h and make the config changes you need.
+ */
+
+/* configuration for this port */
+#define PPP_USERNAME  "Admin"
+#define PPP_PASSWORD  "pass"
+
+/** Define this to the index of the windows network adapter to use */
+#define PACKET_LIB_ADAPTER_NR         1
+/** Define this to the GUID of the windows network adapter to use
+ * or NOT define this if you want PACKET_LIB_ADAPTER_NR to be used */ 
+/*#define PACKET_LIB_ADAPTER_GUID       "00000000-0000-0000-0000-000000000000"*/
+/*#define PACKET_LIB_GET_ADAPTER_NETADDRESS(addr) IP4_ADDR((addr), 192,168,1,0)*/
+/*#define PACKET_LIB_QUIET*/
+
+/* If these 2 are not defined, the corresponding config setting is used */
+/* #define USE_DHCP    0 */
+/* #define USE_AUTOIP  0 */
+
+/* #define USE_PCAPIF 1 */
+#define LWIP_PORT_INIT_IPADDR(addr)   IP4_ADDR((addr), 192,168,1,200)
+#define LWIP_PORT_INIT_GW(addr)       IP4_ADDR((addr), 192,168,1,1)
+#define LWIP_PORT_INIT_NETMASK(addr)  IP4_ADDR((addr), 255,255,255,0)
+
+/* remember to change this MAC address to suit your needs!
+   the last octet will be increased by netif->num for each netif */
+#define LWIP_MAC_ADDR_BASE            {0x00,0x01,0x02,0x03,0x04,0x05}
+
+/* #define USE_SLIPIF 0 */
+/* #define SIO_USE_COMPORT 0 */
+#ifdef USE_SLIPIF
+#if USE_SLIPIF
+#define LWIP_PORT_INIT_SLIP1_IPADDR(addr)   IP4_ADDR((addr), 192, 168,   2, 2)
+#define LWIP_PORT_INIT_SLIP1_GW(addr)       IP4_ADDR((addr), 192, 168,   2, 1)
+#define LWIP_PORT_INIT_SLIP1_NETMASK(addr)  IP4_ADDR((addr), 255, 255, 255, 0)
+#if USE_SLIPIF > 1
+#define LWIP_PORT_INIT_SLIP2_IPADDR(addr)   IP4_ADDR((addr), 192, 168,   2, 1)
+#define LWIP_PORT_INIT_SLIP2_GW(addr)       IP4_ADDR((addr), 0,     0,   0, 0)
+#define LWIP_PORT_INIT_SLIP2_NETMASK(addr)  IP4_ADDR((addr), 255, 255, 255, 0)*/
+#endif /* USE_SLIPIF > 1 */
+#endif /* USE_SLIPIF */
+#endif /* USE_SLIPIF */
+
+/* configuration for applications */
+
+#define LWIP_CHARGEN_APP              0
+#define LWIP_DNS_APP                  0
+#define LWIP_HTTPD_APP                0
+/* Set this to 1 to use the netconn http server,
+ * otherwise the raw api server will be used. */
+/*#define LWIP_HTTPD_APP_NETCONN     */
+#define LWIP_NETBIOS_APP              0
+#define LWIP_NETIO_APP                0
+#define LWIP_MDNS_APP                 0
+#define LWIP_MQTT_APP                 0
+#define LWIP_PING_APP                 0
+#define LWIP_RTP_APP                  0
+#define LWIP_SHELL_APP                0
+#define LWIP_SNMP_APP                 0
+#define LWIP_SNTP_APP                 0
+#define LWIP_SOCKET_EXAMPLES_APP      0
+#define LWIP_TCPECHO_APP              0
+/* Set this to 1 to use the netconn tcpecho server,
+ * otherwise the raw api server will be used. */
+/*#define LWIP_TCPECHO_APP_NETCONN   */
+#define LWIP_TFTP_APP                 0
+#define LWIP_TFTP_CLIENT_APP          0
+#define LWIP_UDPECHO_APP              0
+#define LWIP_LWIPERF_APP              0
+
+/*#define USE_DHCP    1*/
+/*#define USE_AUTOIP  1*/
+
+/* define this to your custom application-init function */
+/* #define LWIP_APP_INIT my_app_init() */