--- /dev/null
+/*
+ * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * This file is part of the lwIP TCP/IP stack.
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ */
+#ifndef __LWIP_IP_H__
+#define __LWIP_IP_H__
+
+#include "lwip/opt.h"
+#include "lwip/def.h"
+#include "lwip/pbuf.h"
+#include "lwip/ip_addr.h"
+
+#include "lwip/err.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define IP_HLEN 40
+
+#define IP_PROTO_ICMP 58
+#define IP_PROTO_UDP 17
+#define IP_PROTO_UDPLITE 136
+#define IP_PROTO_TCP 6
+
+/* This is passed as the destination address to ip_output_if (not
+ to ip_output), meaning that an IP header already is constructed
+ in the pbuf. This is used when TCP retransmits. */
+#ifdef IP_HDRINCL
+#undef IP_HDRINCL
+#endif /* IP_HDRINCL */
+#define IP_HDRINCL NULL
+
+#if LWIP_NETIF_HWADDRHINT
+#define IP_PCB_ADDRHINT ;u8_t addr_hint
+#else
+#define IP_PCB_ADDRHINT
+#endif /* LWIP_NETIF_HWADDRHINT */
+
+/* This is the common part of all PCB types. It needs to be at the
+ beginning of a PCB type definition. It is located here so that
+ changes to this common part are made in one location instead of
+ having to change all PCB structs. */
+#define IP_PCB struct ip_addr local_ip; \
+ struct ip_addr remote_ip; \
+ /* Socket options */ \
+ u16_t so_options; \
+ /* Type Of Service */ \
+ u8_t tos; \
+ /* Time To Live */ \
+ u8_t ttl; \
+ /* link layer address resolution hint */ \
+ IP_PCB_ADDRHINT
+
+
+/* The IPv6 header. */
+struct ip_hdr {
+#if BYTE_ORDER == LITTLE_ENDIAN
+ u8_t tclass1:4, v:4;
+ u8_t flow1:4, tclass2:4;
+#else
+ u8_t v:4, tclass1:4;
+ u8_t tclass2:8, flow1:4;
+#endif
+ u16_t flow2;
+ u16_t len; /* payload length */
+ u8_t nexthdr; /* next header */
+ u8_t hoplim; /* hop limit (TTL) */
+ struct ip_addr src, dest; /* source and destination IP addresses */
+};
+
+#define IPH_PROTO(hdr) (iphdr->nexthdr)
+
+void ip_init(void);
+
+#include "lwip/netif.h"
+
+struct netif *ip_route(struct ip_addr *dest);
+
+void ip_input(struct pbuf *p, struct netif *inp);
+
+/* source and destination addresses in network byte order, please */
+err_t ip_output(struct pbuf *p, struct ip_addr *src, struct ip_addr *dest,
+ u8_t ttl, u8_t proto);
+
+err_t ip_output_if(struct pbuf *p, struct ip_addr *src, struct ip_addr *dest,
+ u8_t ttl, u8_t proto,
+ struct netif *netif);
+
+#if IP_DEBUG
+void ip_debug_print(struct pbuf *p);
+#endif /* IP_DEBUG */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __LWIP_IP_H__ */
+
+
