[164] | 1 | /*
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| 2 | * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without modification,
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| 6 | * are permitted provided that the following conditions are met:
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| 7 | *
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| 8 | * 1. Redistributions of source code must retain the above copyright notice,
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| 9 | * this list of conditions and the following disclaimer.
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| 10 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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| 11 | * this list of conditions and the following disclaimer in the documentation
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| 12 | * and/or other materials provided with the distribution.
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| 13 | * 3. The name of the author may not be used to endorse or promote products
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| 14 | * derived from this software without specific prior written permission.
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| 15 | *
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| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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| 17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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| 18 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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| 19 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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| 20 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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| 21 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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| 22 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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| 23 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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| 24 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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| 25 | * OF SUCH DAMAGE.
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| 26 | *
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| 27 | * This file is part of the lwIP TCP/IP stack.
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| 28 | *
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| 29 | * Author: Adam Dunkels <adam@sics.se>
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| 30 | *
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| 31 | */
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| 32 | #ifndef __LWIP_IP_H__
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| 33 | #define __LWIP_IP_H__
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| 34 |
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| 35 | #include "lwip/opt.h"
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| 36 | #include "lwip/def.h"
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| 37 | #include "lwip/pbuf.h"
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| 38 | #include "lwip/ip_addr.h"
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| 39 |
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| 40 | #include "lwip/err.h"
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| 41 |
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| 42 | #ifdef __cplusplus
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| 43 | extern "C" {
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| 44 | #endif
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| 45 |
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| 46 | #define IP_HLEN 40
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| 47 |
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| 48 | #define IP_PROTO_ICMP 58
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| 49 | #define IP_PROTO_UDP 17
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| 50 | #define IP_PROTO_UDPLITE 136
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| 51 | #define IP_PROTO_TCP 6
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| 52 |
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| 53 | /* This is passed as the destination address to ip_output_if (not
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| 54 | to ip_output), meaning that an IP header already is constructed
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| 55 | in the pbuf. This is used when TCP retransmits. */
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| 56 | #ifdef IP_HDRINCL
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| 57 | #undef IP_HDRINCL
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| 58 | #endif /* IP_HDRINCL */
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| 59 | #define IP_HDRINCL NULL
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| 60 |
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| 61 | #if LWIP_NETIF_HWADDRHINT
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| 62 | #define IP_PCB_ADDRHINT ;u8_t addr_hint
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| 63 | #else
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| 64 | #define IP_PCB_ADDRHINT
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| 65 | #endif /* LWIP_NETIF_HWADDRHINT */
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| 66 |
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| 67 | /* This is the common part of all PCB types. It needs to be at the
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| 68 | beginning of a PCB type definition. It is located here so that
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| 69 | changes to this common part are made in one location instead of
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| 70 | having to change all PCB structs. */
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| 71 | #define IP_PCB struct ip_addr local_ip; \
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| 72 | struct ip_addr remote_ip; \
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| 73 | /* Socket options */ \
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| 74 | u16_t so_options; \
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| 75 | /* Type Of Service */ \
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| 76 | u8_t tos; \
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| 77 | /* Time To Live */ \
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| 78 | u8_t ttl; \
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| 79 | /* link layer address resolution hint */ \
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| 80 | IP_PCB_ADDRHINT
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| 81 |
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| 82 |
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| 83 | /* The IPv6 header. */
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| 84 | struct ip_hdr {
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| 85 | #if BYTE_ORDER == LITTLE_ENDIAN
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| 86 | u8_t tclass1:4, v:4;
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| 87 | u8_t flow1:4, tclass2:4;
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| 88 | #else
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| 89 | u8_t v:4, tclass1:4;
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| 90 | u8_t tclass2:8, flow1:4;
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| 91 | #endif
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| 92 | u16_t flow2;
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| 93 | u16_t len; /* payload length */
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| 94 | u8_t nexthdr; /* next header */
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| 95 | u8_t hoplim; /* hop limit (TTL) */
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| 96 | struct ip_addr src, dest; /* source and destination IP addresses */
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| 97 | };
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| 98 |
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| 99 | #define IPH_PROTO(hdr) (iphdr->nexthdr)
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| 100 |
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| 101 | void ip_init(void);
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| 102 |
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| 103 | #include "lwip/netif.h"
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| 104 |
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| 105 | struct netif *ip_route(struct ip_addr *dest);
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| 106 |
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| 107 | void ip_input(struct pbuf *p, struct netif *inp);
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| 108 |
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| 109 | /* source and destination addresses in network byte order, please */
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| 110 | err_t ip_output(struct pbuf *p, struct ip_addr *src, struct ip_addr *dest,
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| 111 | u8_t ttl, u8_t proto);
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| 112 |
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| 113 | err_t ip_output_if(struct pbuf *p, struct ip_addr *src, struct ip_addr *dest,
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| 114 | u8_t ttl, u8_t proto,
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| 115 | struct netif *netif);
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| 116 |
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| 117 | #define ip_current_netif() NULL
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| 118 | #define ip_current_header() NULL
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| 119 |
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| 120 | #if IP_DEBUG
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| 121 | void ip_debug_print(struct pbuf *p);
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| 122 | #endif /* IP_DEBUG */
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| 123 |
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| 124 | #ifdef __cplusplus
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| 125 | }
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| 126 | #endif
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| 127 |
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| 128 | #endif /* __LWIP_IP_H__ */
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| 129 |
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| 130 |
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