git.joshuawise.com / netwatch.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | ||
| 37 | #include "lwip/def.h" | |
| 38 | #include "lwip/pbuf.h" | |
| 39 | #include "lwip/ip_addr.h" | |
| 40 | #include "lwip/err.h" | |
| 41 | ||
| 42 | #ifdef __cplusplus | |
| 43 | extern "C" { | |
| 44 | #endif | |
| 45 | ||
| 46 | #define ip_init() /* Compatibility define, not init needed. */ | |
| 47 | struct netif *ip_route(struct ip_addr *dest); | |
| 48 | err_t ip_input(struct pbuf *p, struct netif *inp); | |
| 49 | err_t ip_output(struct pbuf *p, struct ip_addr *src, struct ip_addr *dest, | |
| 50 | u8_t ttl, u8_t tos, u8_t proto); | |
| 51 | err_t ip_output_if(struct pbuf *p, struct ip_addr *src, struct ip_addr *dest, | |
| 52 | u8_t ttl, u8_t tos, u8_t proto, | |
| 53 | struct netif *netif); | |
| 54 | ||
| 55 | #define IP_HLEN 20 | |
| 56 | ||
| 57 | #define IP_PROTO_ICMP 1 | |
| 58 | #define IP_PROTO_UDP 17 | |
| 59 | #define IP_PROTO_UDPLITE 136 | |
| 60 | #define IP_PROTO_TCP 6 | |
| 61 | ||
| 62 | /* This is passed as the destination address to ip_output_if (not | |
| 63 | to ip_output), meaning that an IP header already is constructed | |
| 64 | in the pbuf. This is used when TCP retransmits. */ | |
| 65 | #ifdef IP_HDRINCL | |
| 66 | #undef IP_HDRINCL | |
| 67 | #endif /* IP_HDRINCL */ | |
| 68 | #define IP_HDRINCL NULL | |
| 69 | ||
| 70 | #if LWIP_NETIF_HWADDRHINT | |
| 71 | #define IP_PCB_ADDRHINT ;u8_t addr_hint | |
| 72 | #else | |
| 73 | #define IP_PCB_ADDRHINT | |
| 74 | #endif /* LWIP_NETIF_HWADDRHINT */ | |
| 75 | ||
| 76 | /* This is the common part of all PCB types. It needs to be at the | |
| 77 | beginning of a PCB type definition. It is located here so that | |
| 78 | changes to this common part are made in one location instead of | |
| 79 | having to change all PCB structs. */ | |
| 80 | #define IP_PCB \ | |
| 81 | /* ip addresses in network byte order */ \ | |
| 82 | struct ip_addr local_ip; \ | |
| 83 | struct ip_addr remote_ip; \ | |
| 84 | /* Socket options */ \ | |
| 85 | u16_t so_options; \ | |
| 86 | /* Type Of Service */ \ | |
| 87 | u8_t tos; \ | |
| 88 | /* Time To Live */ \ | |
| 89 | u8_t ttl \ | |
| 90 | /* link layer address resolution hint */ \ | |
| 91 | IP_PCB_ADDRHINT | |
| 92 | ||
| 93 | struct ip_pcb { | |
| 94 | /* Common members of all PCB types */ | |
| 95 | IP_PCB; | |
| 96 | }; | |
| 97 | ||
| 98 | /* | |
| 99 | * Option flags per-socket. These are the same like SO_XXX. | |
| 100 | */ | |
| 101 | #define SOF_DEBUG (u16_t)0x0001U /* turn on debugging info recording */ | |
| 102 | #define SOF_ACCEPTCONN (u16_t)0x0002U /* socket has had listen() */ | |
| 103 | #define SOF_REUSEADDR (u16_t)0x0004U /* allow local address reuse */ | |
| 104 | #define SOF_KEEPALIVE (u16_t)0x0008U /* keep connections alive */ | |
| 105 | #define SOF_DONTROUTE (u16_t)0x0010U /* just use interface addresses */ | |
| 106 | #define SOF_BROADCAST (u16_t)0x0020U /* permit sending of broadcast msgs */ | |
| 107 | #define SOF_USELOOPBACK (u16_t)0x0040U /* bypass hardware when possible */ | |
| 108 | #define SOF_LINGER (u16_t)0x0080U /* linger on close if data present */ | |
| 109 | #define SOF_OOBINLINE (u16_t)0x0100U /* leave received OOB data in line */ | |
| 110 | #define SOF_REUSEPORT (u16_t)0x0200U /* allow local address & port reuse */ | |
| 111 | ||
| 112 | ||
| 113 | #ifdef PACK_STRUCT_USE_INCLUDES | |
| 114 | # include "arch/bpstruct.h" | |
| 115 | #endif | |
| 116 | PACK_STRUCT_BEGIN | |
| 117 | struct ip_hdr { | |
| 118 | /* version / header length / type of service */ | |
| 119 | PACK_STRUCT_FIELD(u16_t _v_hl_tos); | |
| 120 | /* total length */ | |
| 121 | PACK_STRUCT_FIELD(u16_t _len); | |
| 122 | /* identification */ | |
| 123 | PACK_STRUCT_FIELD(u16_t _id); | |
| 124 | /* fragment offset field */ | |
| 125 | PACK_STRUCT_FIELD(u16_t _offset); | |
| 126 | #define IP_RF 0x8000 /* reserved fragment flag */ | |
| 127 | #define IP_DF 0x4000 /* dont fragment flag */ | |
| 128 | #define IP_MF 0x2000 /* more fragments flag */ | |
| 129 | #define IP_OFFMASK 0x1fff /* mask for fragmenting bits */ | |
| 130 | /* time to live / protocol*/ | |
| 131 | PACK_STRUCT_FIELD(u16_t _ttl_proto); | |
| 132 | /* checksum */ | |
| 133 | PACK_STRUCT_FIELD(u16_t _chksum); | |
| 134 | /* source and destination IP addresses */ | |
| 135 | PACK_STRUCT_FIELD(struct ip_addr src); | |
| 136 | PACK_STRUCT_FIELD(struct ip_addr dest); | |
| 137 | } PACK_STRUCT_STRUCT; | |
| 138 | PACK_STRUCT_END | |
| 139 | #ifdef PACK_STRUCT_USE_INCLUDES | |
| 140 | # include "arch/epstruct.h" | |
| 141 | #endif | |
| 142 | ||
| 143 | #define IPH_V(hdr) (ntohs((hdr)->_v_hl_tos) >> 12) | |
| 144 | #define IPH_HL(hdr) ((ntohs((hdr)->_v_hl_tos) >> 8) & 0x0f) | |
| 145 | #define IPH_TOS(hdr) (ntohs((hdr)->_v_hl_tos) & 0xff) | |
| 146 | #define IPH_LEN(hdr) ((hdr)->_len) | |
| 147 | #define IPH_ID(hdr) ((hdr)->_id) | |
| 148 | #define IPH_OFFSET(hdr) ((hdr)->_offset) | |
| 149 | #define IPH_TTL(hdr) (ntohs((hdr)->_ttl_proto) >> 8) | |
| 150 | #define IPH_PROTO(hdr) (ntohs((hdr)->_ttl_proto) & 0xff) | |
| 151 | #define IPH_CHKSUM(hdr) ((hdr)->_chksum) | |
| 152 | ||
| 153 | #define IPH_VHLTOS_SET(hdr, v, hl, tos) (hdr)->_v_hl_tos = (htons(((v) << 12) | ((hl) << 8) | (tos))) | |
| 154 | #define IPH_LEN_SET(hdr, len) (hdr)->_len = (len) | |
| 155 | #define IPH_ID_SET(hdr, id) (hdr)->_id = (id) | |
| 156 | #define IPH_OFFSET_SET(hdr, off) (hdr)->_offset = (off) | |
| 157 | #define IPH_TTL_SET(hdr, ttl) (hdr)->_ttl_proto = (htons(IPH_PROTO(hdr) | ((u16_t)(ttl) << 8))) | |
| 158 | #define IPH_PROTO_SET(hdr, proto) (hdr)->_ttl_proto = (htons((proto) | (IPH_TTL(hdr) << 8))) | |
| 159 | #define IPH_CHKSUM_SET(hdr, chksum) (hdr)->_chksum = (chksum) | |
| 160 | ||
| 161 | #if IP_DEBUG | |
| 162 | void ip_debug_print(struct pbuf *p); | |
| 163 | #else | |
| 164 | #define ip_debug_print(p) | |
| 165 | #endif /* IP_DEBUG */ | |
| 166 | ||
| 167 | #ifdef __cplusplus | |
| 168 | } | |
| 169 | #endif | |
| 170 | ||
| 171 | #endif /* __LWIP_IP_H__ */ | |
| 172 | ||
| 173 |