lwip-1.4.1 (partial)
Embed:
(wiki syntax)
Show/hide line numbers
ip.h
00001 /* 00002 * Copyright (c) 2001-2004 Swedish Institute of Computer Science. 00003 * All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without modification, 00006 * are permitted provided that the following conditions are met: 00007 * 00008 * 1. Redistributions of source code must retain the above copyright notice, 00009 * this list of conditions and the following disclaimer. 00010 * 2. Redistributions in binary form must reproduce the above copyright notice, 00011 * this list of conditions and the following disclaimer in the documentation 00012 * and/or other materials provided with the distribution. 00013 * 3. The name of the author may not be used to endorse or promote products 00014 * derived from this software without specific prior written permission. 00015 * 00016 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 00017 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 00018 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 00019 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 00020 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 00021 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 00022 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 00023 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 00024 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 00025 * OF SUCH DAMAGE. 00026 * 00027 * This file is part of the lwIP TCP/IP stack. 00028 * 00029 * Author: Adam Dunkels <adam@sics.se> 00030 * 00031 */ 00032 #ifndef __LWIP_IP_H__ 00033 #define __LWIP_IP_H__ 00034 00035 #include "lwip/opt.h" 00036 #include "lwip/def.h" 00037 #include "lwip/pbuf.h" 00038 #include "lwip/ip_addr.h" 00039 00040 #include "lwip/err.h" 00041 00042 #ifdef __cplusplus 00043 extern "C" { 00044 #endif 00045 00046 #define IP_HLEN 40 00047 00048 #define IP_PROTO_ICMP 58 00049 #define IP_PROTO_UDP 17 00050 #define IP_PROTO_UDPLITE 136 00051 #define IP_PROTO_TCP 6 00052 00053 /* This is passed as the destination address to ip_output_if (not 00054 to ip_output), meaning that an IP header already is constructed 00055 in the pbuf. This is used when TCP retransmits. */ 00056 #ifdef IP_HDRINCL 00057 #undef IP_HDRINCL 00058 #endif /* IP_HDRINCL */ 00059 #define IP_HDRINCL NULL 00060 00061 #if LWIP_NETIF_HWADDRHINT 00062 #define IP_PCB_ADDRHINT ;u8_t addr_hint 00063 #else 00064 #define IP_PCB_ADDRHINT 00065 #endif /* LWIP_NETIF_HWADDRHINT */ 00066 00067 /* This is the common part of all PCB types. It needs to be at the 00068 beginning of a PCB type definition. It is located here so that 00069 changes to this common part are made in one location instead of 00070 having to change all PCB structs. */ 00071 #define IP_PCB struct ip_addr local_ip; \ 00072 struct ip_addr remote_ip; \ 00073 /* Socket options */ \ 00074 u16_t so_options; \ 00075 /* Type Of Service */ \ 00076 u8_t tos; \ 00077 /* Time To Live */ \ 00078 u8_t ttl; \ 00079 /* link layer address resolution hint */ \ 00080 IP_PCB_ADDRHINT 00081 00082 00083 /* The IPv6 header. */ 00084 struct ip_hdr { 00085 #if BYTE_ORDER == LITTLE_ENDIAN 00086 u8_t tclass1:4, v:4; 00087 u8_t flow1:4, tclass2:4; 00088 #else 00089 u8_t v:4, tclass1:4; 00090 u8_t tclass2:8, flow1:4; 00091 #endif 00092 u16_t flow2; 00093 u16_t len; /* payload length */ 00094 u8_t nexthdr; /* next header */ 00095 u8_t hoplim; /* hop limit (TTL) */ 00096 struct ip_addr src, dest; /* source and destination IP addresses */ 00097 }; 00098 00099 #define IPH_PROTO(hdr) (iphdr->nexthdr) 00100 00101 void ip_init(void); 00102 00103 #include "lwip/netif.h" 00104 00105 struct netif *ip_route(struct ip_addr *dest); 00106 00107 void ip_input(struct pbuf *p, struct netif *inp); 00108 00109 /* source and destination addresses in network byte order, please */ 00110 err_t ip_output(struct pbuf *p, struct ip_addr *src, struct ip_addr *dest, 00111 u8_t ttl, u8_t proto); 00112 00113 err_t ip_output_if(struct pbuf *p, struct ip_addr *src, struct ip_addr *dest, 00114 u8_t ttl, u8_t proto, 00115 struct netif *netif); 00116 00117 #define ip_current_netif() NULL 00118 #define ip_current_header() NULL 00119 00120 #if IP_DEBUG 00121 void ip_debug_print(struct pbuf *p); 00122 #endif /* IP_DEBUG */ 00123 00124 #ifdef __cplusplus 00125 } 00126 #endif 00127 00128 #endif /* __LWIP_IP_H__ */ 00129 00130
Generated on Wed Jul 13 2022 09:48:37 by 1.7.2