/* * Copyright (c) 2001-2004 Swedish Institute of Computer Science. * All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY * OF SUCH DAMAGE. * * This file is part of the lwIP TCP/IP stack. * * Author: Adam Dunkels * */ #ifndef __LWIP_IP4_H__ #define __LWIP_IP4_H__ #include "opt.h" #include "def.h" #include "pbuf.h" #include "ip_addr.h" #include "ip6_addr.h" #include "err.h" #include "netif.h" #ifdef __cplusplus extern "C" { #endif /** Currently, the function ip_output_if_opt() is only used with IGMP */ #define IP_OPTIONS_SEND LWIP_IGMP #define IP_HLEN 20 #define IP_PROTO_ICMP 1 #define IP_PROTO_IGMP 2 #define IP_PROTO_UDP 17 #define IP_PROTO_UDPLITE 136 #define IP_PROTO_TCP 6 #define IP_PROTO_GRE 47 #define IP_PROTO_ESP 50 #define IP_PROTO_AH 51 /** This operates on a void* by loading the first byte */ #define IP_HDR_GET_VERSION(ptr) ((*(u8_t*)(ptr)) >> 4) #ifdef PACK_STRUCT_USE_INCLUDES # include "bpstruct.h" #endif #undef IP_RF #undef IP_DF #undef IP_MF #undef IP_OFFMASK #define IP_RF 0x8000U /* reserved fragment flag */ #define IP_DF 0x4000U /* dont fragment flag */ #define IP_MF 0x2000U /* more fragments flag */ #define IP_OFFMASK 0x1fffU /* mask for fragmenting bits */ PACK_STRUCT_BEGIN struct ipsec_esp_hdr { PACK_STRUCT_FIELD(u32_t spi); /**< Security Parameters Index */ PACK_STRUCT_FIELD(u32_t sequence); /**< Sequence number */ }PACK_STRUCT_STRUCT; PACK_STRUCT_END PACK_STRUCT_BEGIN struct ip_hdr { /* version / header length */ PACK_STRUCT_FIELD(u8_t _v_hl); /* type of service */ PACK_STRUCT_FIELD(u8_t _tos); /* total length */ PACK_STRUCT_FIELD(u16_t _len); /* identification */ PACK_STRUCT_FIELD(u16_t _id); /* fragment offset field */ PACK_STRUCT_FIELD(u16_t _offset); /* time to live */ PACK_STRUCT_FIELD(u8_t _ttl); /* protocol*/ PACK_STRUCT_FIELD(u8_t _proto); /* checksum */ PACK_STRUCT_FIELD(u16_t _chksum); /* source and destination IP addresses */ PACK_STRUCT_FIELD(ip_addr_p_t src); PACK_STRUCT_FIELD(ip_addr_p_t dest); } PACK_STRUCT_STRUCT; PACK_STRUCT_END #ifdef PACK_STRUCT_USE_INCLUDES # include "epstruct.h" #endif #define IPH_V(hdr) ((hdr)->_v_hl >> 4) #define IPH_HL(hdr) ((hdr)->_v_hl & 0x0f) #define IPH_TOS(hdr) ((hdr)->_tos) #define IPH_LEN(hdr) ((hdr)->_len) #define IPH_ID(hdr) ((hdr)->_id) #define IPH_OFFSET(hdr) ((hdr)->_offset) #define IPH_TTL(hdr) ((hdr)->_ttl) #define IPH_PROTO(hdr) ((hdr)->_proto) #define IPH_CHKSUM(hdr) ((hdr)->_chksum) #define IPH_VHL_SET(hdr, v, hl) (hdr)->_v_hl = (((v) << 4) | (hl)) #define IPH_TOS_SET(hdr, tos) (hdr)->_tos = (tos) #define IPH_LEN_SET(hdr, len) (hdr)->_len = (len) #define IPH_ID_SET(hdr, id) (hdr)->_id = (id) #define IPH_OFFSET_SET(hdr, off) (hdr)->_offset = (off) #define IPH_TTL_SET(hdr, ttl) (hdr)->_ttl = (u8_t)(ttl) #define IPH_PROTO_SET(hdr, proto) (hdr)->_proto = (u8_t)(proto) #define IPH_CHKSUM_SET(hdr, chksum) (hdr)->_chksum = (chksum) #define ip_init() /* Compatibility define, no init needed. */ void ip_mangle_ttl(struct netif *netif, struct pbuf *p, u8_t ttl); struct netif *ip_route(ip_addr_t *dest); struct netif *ip_route_lc(struct pbuf *p, struct netif *inp); struct netif *ip_route_from_app_fn(u32_t ip4_src, u32_t ip4_dest, const char* file, const int line); #define ip_route_from_app(ip4_src, ip4_dest) ip_route_from_app_fn((ip4_src), (ip4_dest), __FUNCTION__, __LINE__) err_t ip_input(struct pbuf *p, struct netif *inp); err_t ip4_input(struct pbuf *p, struct netif *inp); err_t ip_output(struct pbuf *p, ip_addr_t *src, ip_addr_t *dest, u8_t ttl, u8_t tos, u8_t proto); err_t ip_output_if(struct pbuf *p, ip_addr_t *src, ip_addr_t *dest, u8_t ttl, u8_t tos, u8_t proto, struct netif *netif); #if LWIP_NETIF_HWADDRHINT err_t ip_output_hinted(struct pbuf *p, ip_addr_t *src, ip_addr_t *dest, u8_t ttl, u8_t tos, u8_t proto, u8_t *addr_hint); #endif /* LWIP_NETIF_HWADDRHINT */ #if IP_OPTIONS_SEND err_t ip_output_if_opt(struct pbuf *p, ip_addr_t *src, ip_addr_t *dest, u8_t ttl, u8_t tos, u8_t proto, struct netif *netif, void *ip_options, u16_t optlen); #endif /* IP_OPTIONS_SEND */ #define ip_netif_get_local_ip(netif) (((netif) != NULL) ? (&((netif)->ip_addr)) : NULL) #define ip_netif_get_local_ipX(netif) (((netif) != NULL) ? ip_2_ipX(&((netif)->ip_addr)) : NULL) #if LWIP_DEBUG void ip_debug_print(struct pbuf *p); #else #define ip_debug_print(p) #endif void ip_pbuf_rti_log(struct netif* inp, struct pbuf *p); void ip_pbuf_log_input(struct netif *inp, struct ip_hdr *iphdr, u16_t payloadLen, struct pbuf *p); void ip_pbuf_log_output_fn(struct netif *inp, struct ip_hdr *iphdr, u16_t payloadLen, err_t ret, struct pbuf *p, const char *func); #define ip_pbuf_log_output(inp, iphdr, len, ret, p) ip_pbuf_log_output_fn(inp, iphdr, len, ret, p, __FUNCTION__) #ifdef __cplusplus } #endif #endif /* __LWIP_IP_H__ */