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6e6d4a8b JP |
1 | /* |
2 | * Copyright (c) 2001-2004 Swedish Institute of Computer Science. | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without modification, | |
6 | * are permitted provided that the following conditions are met: | |
7 | * | |
8 | * 1. Redistributions of source code must retain the above copyright notice, | |
9 | * this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright notice, | |
11 | * this list of conditions and the following disclaimer in the documentation | |
12 | * and/or other materials provided with the distribution. | |
13 | * 3. The name of the author may not be used to endorse or promote products | |
14 | * derived from this software without specific prior written permission. | |
15 | * | |
16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
18 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT | |
19 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
20 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT | |
21 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
22 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
23 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
24 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY | |
25 | * OF SUCH DAMAGE. | |
26 | * | |
27 | * This file is part of the lwIP TCP/IP stack. | |
28 | * | |
29 | * Author: Adam Dunkels <adam@sics.se> | |
30 | * | |
31 | */ | |
32 | #ifndef __LWIP_IP_H__ | |
33 | #define __LWIP_IP_H__ | |
34 | ||
35 | #include "lwip/opt.h" | |
36 | #include "lwip/def.h" | |
37 | #include "lwip/pbuf.h" | |
38 | #include "lwip/ip_addr.h" | |
39 | ||
40 | #include "lwip/err.h" | |
41 | ||
42 | #ifdef __cplusplus | |
43 | extern "C" { | |
44 | #endif | |
45 | ||
46 | #define IP_HLEN 40 | |
47 | ||
48 | #define IP_PROTO_ICMP 58 | |
49 | #define IP_PROTO_UDP 17 | |
50 | #define IP_PROTO_UDPLITE 136 | |
51 | #define IP_PROTO_TCP 6 | |
52 | ||
53 | /* This is passed as the destination address to ip_output_if (not | |
54 | to ip_output), meaning that an IP header already is constructed | |
55 | in the pbuf. This is used when TCP retransmits. */ | |
56 | #ifdef IP_HDRINCL | |
57 | #undef IP_HDRINCL | |
58 | #endif /* IP_HDRINCL */ | |
59 | #define IP_HDRINCL NULL | |
60 | ||
61 | #if LWIP_NETIF_HWADDRHINT | |
62 | #define IP_PCB_ADDRHINT ;u8_t addr_hint | |
63 | #else | |
64 | #define IP_PCB_ADDRHINT | |
65 | #endif /* LWIP_NETIF_HWADDRHINT */ | |
66 | ||
67 | /* This is the common part of all PCB types. It needs to be at the | |
68 | beginning of a PCB type definition. It is located here so that | |
69 | changes to this common part are made in one location instead of | |
70 | having to change all PCB structs. */ | |
71 | #define IP_PCB struct ip_addr local_ip; \ | |
72 | struct ip_addr remote_ip; \ | |
73 | /* Socket options */ \ | |
74 | u16_t so_options; \ | |
75 | /* Type Of Service */ \ | |
76 | u8_t tos; \ | |
77 | /* Time To Live */ \ | |
78 | u8_t ttl; \ | |
79 | /* link layer address resolution hint */ \ | |
80 | IP_PCB_ADDRHINT | |
81 | ||
82 | ||
83 | /* The IPv6 header. */ | |
84 | struct ip_hdr { | |
85 | #if BYTE_ORDER == LITTLE_ENDIAN | |
86 | u8_t tclass1:4, v:4; | |
87 | u8_t flow1:4, tclass2:4; | |
88 | #else | |
89 | u8_t v:4, tclass1:4; | |
90 | u8_t tclass2:8, flow1:4; | |
91 | #endif | |
92 | u16_t flow2; | |
93 | u16_t len; /* payload length */ | |
94 | u8_t nexthdr; /* next header */ | |
95 | u8_t hoplim; /* hop limit (TTL) */ | |
96 | struct ip_addr src, dest; /* source and destination IP addresses */ | |
97 | }; | |
98 | ||
99 | #define IPH_PROTO(hdr) (iphdr->nexthdr) | |
100 | ||
101 | void ip_init(void); | |
102 | ||
103 | #include "lwip/netif.h" | |
104 | ||
105 | struct netif *ip_route(struct ip_addr *dest); | |
106 | ||
107 | void ip_input(struct pbuf *p, struct netif *inp); | |
108 | ||
109 | /* source and destination addresses in network byte order, please */ | |
110 | err_t ip_output(struct pbuf *p, struct ip_addr *src, struct ip_addr *dest, | |
111 | u8_t ttl, u8_t proto); | |
112 | ||
113 | err_t ip_output_if(struct pbuf *p, struct ip_addr *src, struct ip_addr *dest, | |
114 | u8_t ttl, u8_t proto, | |
115 | struct netif *netif); | |
116 | ||
117 | #if IP_DEBUG | |
118 | void ip_debug_print(struct pbuf *p); | |
119 | #endif /* IP_DEBUG */ | |
120 | ||
121 | #ifdef __cplusplus | |
122 | } | |
123 | #endif | |
124 | ||
125 | #endif /* __LWIP_IP_H__ */ | |
126 | ||
127 |