2 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
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.
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
27 * This file is part of the lwIP TCP/IP stack.
29 * Author: Adam Dunkels <adam@sics.se>
38 #include "lwip/pbuf.h"
39 #include "lwip/ip_addr.h"
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,
57 #define IP_PROTO_ICMP 1
58 #define IP_PROTO_UDP 17
59 #define IP_PROTO_UDPLITE 136
60 #define IP_PROTO_TCP 6
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. */
67 #endif /* IP_HDRINCL */
68 #define IP_HDRINCL NULL
70 #if LWIP_NETIF_HWADDRHINT
71 #define IP_PCB_ADDRHINT ;u8_t addr_hint
73 #define IP_PCB_ADDRHINT
74 #endif /* LWIP_NETIF_HWADDRHINT */
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. */
81 /* ip addresses in network byte order */ \
82 struct ip_addr local_ip; \
83 struct ip_addr remote_ip; \
84 /* Socket options */ \
86 /* Type Of Service */ \
90 /* link layer address resolution hint */ \
94 /* Common members of all PCB types */
99 * Option flags per-socket. These are the same like SO_XXX.
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 */
113 #ifdef PACK_STRUCT_USE_INCLUDES
114 # include "arch/bpstruct.h"
118 /* version / header length / type of service */
119 PACK_STRUCT_FIELD(u16_t _v_hl_tos);
121 PACK_STRUCT_FIELD(u16_t _len);
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);
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;
139 #ifdef PACK_STRUCT_USE_INCLUDES
140 # include "arch/epstruct.h"
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)
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)
162 void ip_debug_print(struct pbuf *p);
164 #define ip_debug_print(p)
165 #endif /* IP_DEBUG */
171 #endif /* __LWIP_IP_H__ */