2019-08-26 11:44:36 +00:00
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/*
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ipv4.h -- missing IPv4 related definitions
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2019-08-26 11:44:37 +00:00
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Copyright (C) 2005 Ivo Timmermans
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2006 Guus Sliepen <guus@tinc-vpn.org>
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2019-08-26 11:44:36 +00:00
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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2019-08-26 11:44:38 +00:00
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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2019-08-26 11:44:36 +00:00
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*/
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#ifndef __TINC_IPV4_H__
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#define __TINC_IPV4_H__
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#ifndef AF_INET
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#define AF_INET 2
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#endif
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#ifndef IPPROTO_ICMP
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#define IPPROTO_ICMP 1
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#endif
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#ifndef ICMP_DEST_UNREACH
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#define ICMP_DEST_UNREACH 3
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#endif
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#ifndef ICMP_FRAG_NEEDED
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#define ICMP_FRAG_NEEDED 4
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#endif
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#ifndef ICMP_NET_UNKNOWN
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#define ICMP_NET_UNKNOWN 6
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#endif
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#ifndef ICMP_NET_UNREACH
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#define ICMP_NET_UNREACH 0
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#endif
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2019-08-26 11:44:40 +00:00
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#ifndef ICMP_NET_ANO
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#define ICMP_NET_ANO 9
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#endif
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2019-08-26 11:44:36 +00:00
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#ifndef IP_MSS
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#define IP_MSS 576
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#endif
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#ifndef HAVE_STRUCT_IP
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struct ip {
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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unsigned int ip_hl:4;
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unsigned int ip_v:4;
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#else
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unsigned int ip_v:4;
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unsigned int ip_hl:4;
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#endif
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uint8_t ip_tos;
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uint16_t ip_len;
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uint16_t ip_id;
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uint16_t ip_off;
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#define IP_RF 0x8000
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#define IP_DF 0x4000
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#define IP_MF 0x2000
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uint8_t ip_ttl;
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uint8_t ip_p;
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uint16_t ip_sum;
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struct in_addr ip_src, ip_dst;
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} __attribute__ ((__packed__));
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#endif
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#ifndef IP_OFFMASK
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#define IP_OFFMASK 0x1fff
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#endif
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#ifndef HAVE_STRUCT_ICMP
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struct icmp {
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uint8_t icmp_type;
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uint8_t icmp_code;
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uint16_t icmp_cksum;
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union {
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uint8_t ih_pptr;
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struct in_addr ih_gwaddr;
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struct ih_idseq {
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uint16_t icd_id;
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uint16_t icd_seq;
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} ih_idseq;
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uint32_t ih_void;
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struct ih_pmtu {
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uint16_t ipm_void;
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uint16_t ipm_nextmtu;
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} ih_pmtu;
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struct ih_rtradv {
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uint8_t irt_num_addrs;
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uint8_t irt_wpa;
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uint16_t irt_lifetime;
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} ih_rtradv;
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} icmp_hun;
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#define icmp_pptr icmp_hun.ih_pptr
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#define icmp_gwaddr icmp_hun.ih_gwaddr
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#define icmp_id icmp_hun.ih_idseq.icd_id
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#define icmp_seq icmp_hun.ih_idseq.icd_seq
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#define icmp_void icmp_hun.ih_void
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#define icmp_pmvoid icmp_hun.ih_pmtu.ipm_void
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#define icmp_nextmtu icmp_hun.ih_pmtu.ipm_nextmtu
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#define icmp_num_addrs icmp_hun.ih_rtradv.irt_num_addrs
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#define icmp_wpa icmp_hun.ih_rtradv.irt_wpa
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#define icmp_lifetime icmp_hun.ih_rtradv.irt_lifetime
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union {
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struct {
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uint32_t its_otime;
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uint32_t its_rtime;
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uint32_t its_ttime;
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} id_ts;
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struct {
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struct ip idi_ip;
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} id_ip;
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uint32_t id_mask;
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uint8_t id_data[1];
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} icmp_dun;
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#define icmp_otime icmp_dun.id_ts.its_otime
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#define icmp_rtime icmp_dun.id_ts.its_rtime
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#define icmp_ttime icmp_dun.id_ts.its_ttime
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#define icmp_ip icmp_dun.id_ip.idi_ip
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#define icmp_radv icmp_dun.id_radv
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#define icmp_mask icmp_dun.id_mask
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#define icmp_data icmp_dun.id_data
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} __attribute__ ((__packed__));
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#endif
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#endif /* __TINC_IPV4_H__ */
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