7e55dbac33
commit a4a41b9023ef5b3a7c4a1cd82fb167fc63e706df Author: goldsimon <goldsimon@gmx.de> Date: Wed Sep 26 21:50:42 2012 +0200 - This also brings in LwIP's IPv6 codebase Signed-off-by: Tomas Hruby <tom@minix3.org>
146 lines
4.9 KiB
C
146 lines
4.9 KiB
C
/*
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* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* This file is part of the lwIP TCP/IP stack.
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*
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* Author: Adam Dunkels <adam@sics.se>
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*
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*/
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#ifndef __LWIP_IP4_H__
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#define __LWIP_IP4_H__
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#include "lwip/opt.h"
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#include "lwip/def.h"
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#include "lwip/pbuf.h"
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#include "lwip/ip_addr.h"
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#include "lwip/ip6_addr.h"
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#include "lwip/err.h"
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#include "lwip/netif.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** Currently, the function ip_output_if_opt() is only used with IGMP */
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#define IP_OPTIONS_SEND LWIP_IGMP
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#define IP_HLEN 20
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#define IP_PROTO_ICMP 1
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#define IP_PROTO_IGMP 2
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#define IP_PROTO_UDP 17
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#define IP_PROTO_UDPLITE 136
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#define IP_PROTO_TCP 6
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#ifdef PACK_STRUCT_USE_INCLUDES
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# include "arch/bpstruct.h"
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#endif
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PACK_STRUCT_BEGIN
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struct ip_hdr {
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/* version / header length */
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PACK_STRUCT_FIELD(u8_t _v_hl);
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/* type of service */
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PACK_STRUCT_FIELD(u8_t _tos);
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/* total length */
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PACK_STRUCT_FIELD(u16_t _len);
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/* identification */
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PACK_STRUCT_FIELD(u16_t _id);
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/* fragment offset field */
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PACK_STRUCT_FIELD(u16_t _offset);
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#define IP_RF 0x8000U /* reserved fragment flag */
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#define IP_DF 0x4000U /* dont fragment flag */
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#define IP_MF 0x2000U /* more fragments flag */
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#define IP_OFFMASK 0x1fffU /* mask for fragmenting bits */
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/* time to live */
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PACK_STRUCT_FIELD(u8_t _ttl);
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/* protocol*/
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PACK_STRUCT_FIELD(u8_t _proto);
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/* checksum */
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PACK_STRUCT_FIELD(u16_t _chksum);
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/* source and destination IP addresses */
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PACK_STRUCT_FIELD(ip_addr_p_t src);
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PACK_STRUCT_FIELD(ip_addr_p_t dest);
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} PACK_STRUCT_STRUCT;
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PACK_STRUCT_END
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#ifdef PACK_STRUCT_USE_INCLUDES
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# include "arch/epstruct.h"
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#endif
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#define IPH_V(hdr) ((hdr)->_v_hl >> 4)
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#define IPH_HL(hdr) ((hdr)->_v_hl & 0x0f)
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#define IPH_TOS(hdr) ((hdr)->_tos)
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#define IPH_LEN(hdr) ((hdr)->_len)
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#define IPH_ID(hdr) ((hdr)->_id)
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#define IPH_OFFSET(hdr) ((hdr)->_offset)
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#define IPH_TTL(hdr) ((hdr)->_ttl)
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#define IPH_PROTO(hdr) ((hdr)->_proto)
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#define IPH_CHKSUM(hdr) ((hdr)->_chksum)
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#define IPH_VHL_SET(hdr, v, hl) (hdr)->_v_hl = (((v) << 4) | (hl))
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#define IPH_TOS_SET(hdr, tos) (hdr)->_tos = (tos)
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#define IPH_LEN_SET(hdr, len) (hdr)->_len = (len)
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#define IPH_ID_SET(hdr, id) (hdr)->_id = (id)
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#define IPH_OFFSET_SET(hdr, off) (hdr)->_offset = (off)
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#define IPH_TTL_SET(hdr, ttl) (hdr)->_ttl = (u8_t)(ttl)
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#define IPH_PROTO_SET(hdr, proto) (hdr)->_proto = (u8_t)(proto)
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#define IPH_CHKSUM_SET(hdr, chksum) (hdr)->_chksum = (chksum)
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#define ip_init() /* Compatibility define, no init needed. */
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struct netif *ip_route(ip_addr_t *dest);
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err_t ip_input(struct pbuf *p, struct netif *inp);
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err_t ip_output(struct pbuf *p, ip_addr_t *src, ip_addr_t *dest,
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u8_t ttl, u8_t tos, u8_t proto);
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err_t ip_output_if(struct pbuf *p, ip_addr_t *src, ip_addr_t *dest,
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u8_t ttl, u8_t tos, u8_t proto,
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struct netif *netif);
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#if LWIP_NETIF_HWADDRHINT
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err_t ip_output_hinted(struct pbuf *p, ip_addr_t *src, ip_addr_t *dest,
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u8_t ttl, u8_t tos, u8_t proto, u8_t *addr_hint);
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#endif /* LWIP_NETIF_HWADDRHINT */
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#if IP_OPTIONS_SEND
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err_t ip_output_if_opt(struct pbuf *p, ip_addr_t *src, ip_addr_t *dest,
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u8_t ttl, u8_t tos, u8_t proto, struct netif *netif, void *ip_options,
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u16_t optlen);
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#endif /* IP_OPTIONS_SEND */
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#define ip_netif_get_local_ipX(netif) (((netif) != NULL) ? ip_2_ipX(&((netif)->ip_addr)) : NULL)
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#if IP_DEBUG
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void ip_debug_print(struct pbuf *p);
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#else
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#define ip_debug_print(p)
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#endif /* IP_DEBUG */
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#ifdef __cplusplus
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}
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#endif
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#endif /* __LWIP_IP_H__ */
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