| /** |
| * @file |
| * |
| * IPv6 layer. |
| */ |
| |
| /* |
| * Copyright (c) 2010 Inico Technologies Ltd. |
| * 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: Ivan Delamer <delamer@inicotech.com> |
| * |
| * |
| * Please coordinate changes and requests with Ivan Delamer |
| * <delamer@inicotech.com> |
| */ |
| #ifndef __LWIP_IP6_H__ |
| #define __LWIP_IP6_H__ |
| |
| #include "lwip/opt.h" |
| |
| #if LWIP_IPV6 /* don't build if not configured for use in lwipopts.h */ |
| |
| #include "lwip/ip.h" |
| #include "lwip/ip6_addr.h" |
| #include "lwip/def.h" |
| #include "lwip/pbuf.h" |
| #include "lwip/netif.h" |
| |
| #include "lwip/err.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #define IP6_HLEN 40 |
| |
| #define IP6_NEXTH_HOPBYHOP 0 |
| #define IP6_NEXTH_TCP 6 |
| #define IP6_NEXTH_UDP 17 |
| #define IP6_NEXTH_ENCAPS 41 |
| #define IP6_NEXTH_ROUTING 43 |
| #define IP6_NEXTH_FRAGMENT 44 |
| #define IP6_NEXTH_ICMP6 58 |
| #define IP6_NEXTH_NONE 59 |
| #define IP6_NEXTH_DESTOPTS 60 |
| #define IP6_NEXTH_UDPLITE 136 |
| |
| |
| /* The IPv6 header. */ |
| #ifdef PACK_STRUCT_USE_INCLUDES |
| # include "arch/bpstruct.h" |
| #endif |
| PACK_STRUCT_BEGIN |
| struct ip6_hdr { |
| /* version / traffic class / flow label */ |
| PACK_STRUCT_FIELD(u32_t _v_tc_fl); |
| /* payload length */ |
| PACK_STRUCT_FIELD(u16_t _plen); |
| /* next header */ |
| PACK_STRUCT_FIELD(u8_t _nexth); |
| /* hop limit */ |
| PACK_STRUCT_FIELD(u8_t _hoplim); |
| /* source and destination IP addresses */ |
| PACK_STRUCT_FIELD(ip6_addr_p_t src); |
| PACK_STRUCT_FIELD(ip6_addr_p_t dest); |
| } PACK_STRUCT_STRUCT; |
| PACK_STRUCT_END |
| #ifdef PACK_STRUCT_USE_INCLUDES |
| # include "arch/epstruct.h" |
| #endif |
| |
| /* Hop-by-hop router alert option. */ |
| #define IP6_HBH_HLEN 8 |
| #define IP6_PAD1_OPTION 0 |
| #define IP6_PADN_ALERT_OPTION 1 |
| #define IP6_ROUTER_ALERT_OPTION 5 |
| #define IP6_ROUTER_ALERT_VALUE_MLD 0 |
| #ifdef PACK_STRUCT_USE_INCLUDES |
| # include "arch/bpstruct.h" |
| #endif |
| PACK_STRUCT_BEGIN |
| struct ip6_hbh_hdr { |
| /* next header */ |
| PACK_STRUCT_FIELD(u8_t _nexth); |
| /* header length */ |
| PACK_STRUCT_FIELD(u8_t _hlen); |
| /* router alert option type */ |
| PACK_STRUCT_FIELD(u8_t _ra_opt_type); |
| /* router alert option data len */ |
| PACK_STRUCT_FIELD(u8_t _ra_opt_dlen); |
| /* router alert option data */ |
| PACK_STRUCT_FIELD(u16_t _ra_opt_data); |
| /* PadN option type */ |
| PACK_STRUCT_FIELD(u8_t _padn_opt_type); |
| /* PadN option data len */ |
| PACK_STRUCT_FIELD(u8_t _padn_opt_dlen); |
| } PACK_STRUCT_STRUCT; |
| PACK_STRUCT_END |
| #ifdef PACK_STRUCT_USE_INCLUDES |
| # include "arch/epstruct.h" |
| #endif |
| |
| /* Fragment header. */ |
| #define IP6_FRAG_HLEN 8 |
| #define IP6_FRAG_OFFSET_MASK 0xfff8 |
| #define IP6_FRAG_MORE_FLAG 0x0001 |
| #ifdef PACK_STRUCT_USE_INCLUDES |
| # include "arch/bpstruct.h" |
| #endif |
| PACK_STRUCT_BEGIN |
| struct ip6_frag_hdr { |
| /* next header */ |
| PACK_STRUCT_FIELD(u8_t _nexth); |
| /* reserved */ |
| PACK_STRUCT_FIELD(u8_t reserved); |
| /* fragment offset */ |
| PACK_STRUCT_FIELD(u16_t _fragment_offset); |
| /* fragmented packet identification */ |
| PACK_STRUCT_FIELD(u32_t _identification); |
| } PACK_STRUCT_STRUCT; |
| PACK_STRUCT_END |
| #ifdef PACK_STRUCT_USE_INCLUDES |
| # include "arch/epstruct.h" |
| #endif |
| |
| #define IP6H_V(hdr) ((ntohl((hdr)->_v_tc_fl) >> 28) & 0x0f) |
| #define IP6H_TC(hdr) ((ntohl((hdr)->_v_tc_fl) >> 20) & 0xff) |
| #define IP6H_FL(hdr) (ntohl((hdr)->_v_tc_fl) & 0x000fffff) |
| #define IP6H_PLEN(hdr) (ntohs((hdr)->_plen)) |
| #define IP6H_NEXTH(hdr) ((hdr)->_nexth) |
| #define IP6H_NEXTH_P(hdr) ((u8_t *)(hdr) + 6) |
| #define IP6H_HOPLIM(hdr) ((hdr)->_hoplim) |
| |
| #define IP6H_VTCFL_SET(hdr, v, tc, fl) (hdr)->_v_tc_fl = (htonl(((v) << 28) | ((tc) << 20) | (fl))) |
| #define IP6H_PLEN_SET(hdr, plen) (hdr)->_plen = htons(plen) |
| #define IP6H_NEXTH_SET(hdr, nexth) (hdr)->_nexth = (nexth) |
| #define IP6H_HOPLIM_SET(hdr, hl) (hdr)->_hoplim = (u8_t)(hl) |
| |
| struct ip_pcb; |
| |
| #define ip6_init() /* TODO should we init current addresses and header pointer? */ |
| struct netif *ip6_route(struct ip6_addr *src, struct ip6_addr *dest); |
| ip6_addr_t *ip6_select_source_address(struct netif *netif, ip6_addr_t * dest); |
| err_t ip6_input(struct pbuf *p, struct netif *inp); |
| err_t ip6_output(struct pbuf *p, struct ip6_addr *src, struct ip6_addr *dest, |
| u8_t hl, u8_t tc, u8_t nexth, struct ip_pcb *pcb); |
| err_t ip6_output_if(struct pbuf *p, struct ip6_addr *src, struct ip6_addr *dest, |
| u8_t hl, u8_t tc, u8_t nexth, struct netif *netif); |
| #if LWIP_NETIF_HWADDRHINT |
| err_t ip6_output_hinted(struct pbuf *p, ip6_addr_t *src, ip6_addr_t *dest, |
| u8_t hl, u8_t tc, u8_t nexth, u8_t *addr_hint); |
| #endif /* LWIP_NETIF_HWADDRHINT */ |
| #if LWIP_IPV6_MLD |
| err_t ip6_options_add_hbh_ra(struct pbuf * p, u8_t nexth, u8_t value); |
| #endif /* LWIP_IPV6_MLD */ |
| |
| #define ip6_netif_get_local_ipX(netif, dest) (((netif) != NULL) ? \ |
| ip6_2_ipX(ip6_select_source_address(netif, dest)) : NULL) |
| |
| #if IP6_DEBUG |
| void ip6_debug_print(struct pbuf *p); |
| #else |
| #define ip6_debug_print(p) |
| #endif /* IP6_DEBUG */ |
| |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* LWIP_IPV6 */ |
| |
| #endif /* __LWIP_IP6_H__ */ |