Modernize the build system.

[tinc] / src / ipv4.h

diff --git a/src/ipv4.h b/src/ipv4.h
new file mode 100644 (file)
index 0000000..bd63ad0
--- /dev/null
+++ b/src/ipv4.h
@@ -0,0 +1,149 @@
+/*
+    ipv4.h -- missing IPv4 related definitions
+    Copyright (C) 2005 Ivo Timmermans
+                  2006-2012 Guus Sliepen <guus@tinc-vpn.org>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#ifndef __TINC_IPV4_H__
+#define __TINC_IPV4_H__
+
+#ifndef AF_INET
+#define AF_INET 2
+#endif
+
+#ifndef IPPROTO_ICMP
+#define IPPROTO_ICMP 1
+#endif
+
+#ifndef ICMP_DEST_UNREACH
+#define ICMP_DEST_UNREACH 3
+#endif
+
+#ifndef ICMP_FRAG_NEEDED
+#define ICMP_FRAG_NEEDED 4
+#endif
+
+#ifndef ICMP_NET_UNKNOWN
+#define ICMP_NET_UNKNOWN 6
+#endif
+
+#ifndef ICMP_TIME_EXCEEDED
+#define ICMP_TIME_EXCEEDED 11
+#endif
+
+#ifndef ICMP_EXC_TTL
+#define ICMP_EXC_TTL 0
+#endif
+
+#ifndef ICMP_NET_UNREACH
+#define ICMP_NET_UNREACH 0
+#endif
+
+#ifndef ICMP_NET_ANO
+#define ICMP_NET_ANO 9
+#endif
+
+#ifndef IP_MSS
+#define       IP_MSS          576
+#endif
+
+#ifndef HAVE_STRUCT_IP
+struct ip {
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+       unsigned int ip_hl:4;
+       unsigned int ip_v:4;
+#else
+       unsigned int ip_v:4;
+       unsigned int ip_hl:4;
+#endif
+       uint8_t ip_tos;
+       uint16_t ip_len;
+       uint16_t ip_id; 
+       uint16_t ip_off;
+#define IP_RF 0x8000
+#define IP_DF 0x4000
+#define IP_MF 0x2000
+       uint8_t ip_ttl;
+       uint8_t ip_p;
+       uint16_t ip_sum;
+       struct in_addr ip_src, ip_dst;
+} __attribute__ ((__packed__));
+#endif
+
+#ifndef IP_OFFMASK
+#define IP_OFFMASK 0x1fff
+#endif
+
+#ifndef HAVE_STRUCT_ICMP
+struct icmp {
+       uint8_t icmp_type;
+       uint8_t icmp_code;
+       uint16_t icmp_cksum;
+       union {
+               uint8_t ih_pptr;
+               struct in_addr ih_gwaddr;
+               struct ih_idseq {
+                       uint16_t icd_id;
+                       uint16_t icd_seq;
+               } ih_idseq;
+               uint32_t ih_void;
+
+
+               struct ih_pmtu {
+                       uint16_t ipm_void;
+                       uint16_t ipm_nextmtu;
+               } ih_pmtu;
+
+               struct ih_rtradv {
+                       uint8_t irt_num_addrs;
+                       uint8_t irt_wpa;
+                       uint16_t irt_lifetime;
+               } ih_rtradv;
+       } icmp_hun;
+#define icmp_pptr icmp_hun.ih_pptr
+#define icmp_gwaddr icmp_hun.ih_gwaddr
+#define icmp_id icmp_hun.ih_idseq.icd_id
+#define icmp_seq icmp_hun.ih_idseq.icd_seq
+#define icmp_void icmp_hun.ih_void
+#define icmp_pmvoid icmp_hun.ih_pmtu.ipm_void
+#define icmp_nextmtu icmp_hun.ih_pmtu.ipm_nextmtu
+#define icmp_num_addrs icmp_hun.ih_rtradv.irt_num_addrs
+#define icmp_wpa icmp_hun.ih_rtradv.irt_wpa
+#define icmp_lifetime icmp_hun.ih_rtradv.irt_lifetime
+       union {
+               struct {
+                       uint32_t its_otime;
+                       uint32_t its_rtime;
+                       uint32_t its_ttime;
+               } id_ts;
+               struct {
+                       struct ip idi_ip;
+               } id_ip;
+               uint32_t id_mask;
+               uint8_t id_data[1];
+       } icmp_dun;
+#define icmp_otime icmp_dun.id_ts.its_otime
+#define icmp_rtime icmp_dun.id_ts.its_rtime
+#define icmp_ttime icmp_dun.id_ts.its_ttime
+#define icmp_ip icmp_dun.id_ip.idi_ip
+#define icmp_radv icmp_dun.id_radv
+#define icmp_mask icmp_dun.id_mask
+#define icmp_data icmp_dun.id_data
+} __attribute__ ((__packed__));
+#endif
+
+#endif /* __TINC_IPV4_H__ */