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authorAlberto Gonzalez Iniesta <agi@inittab.org>2012-02-21 15:53:40 +0100
committerAlberto Gonzalez Iniesta <agi@inittab.org>2012-02-21 15:53:40 +0100
commit349cfa7acb95abe865209a28e417ec74b56f9bba (patch)
treead65334821b587c4ecdd461be84c94305ffdb888 /tap-win32/proto.h
Imported Upstream version 2.2.1upstream/2.2.1
Diffstat (limited to 'tap-win32/proto.h')
-rwxr-xr-xtap-win32/proto.h224
1 files changed, 224 insertions, 0 deletions
diff --git a/tap-win32/proto.h b/tap-win32/proto.h
new file mode 100755
index 0000000..894a37f
--- /dev/null
+++ b/tap-win32/proto.h
@@ -0,0 +1,224 @@
+/*
+ * TAP-Win32/TAP-Win64 -- A kernel driver to provide virtual tap
+ * device functionality on Windows.
+ *
+ * This code was inspired by the CIPE-Win32 driver by Damion K. Wilson.
+ *
+ * This source code is Copyright (C) 2002-2010 OpenVPN Technologies, Inc.,
+ * and is released under the GPL version 2 (see below).
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * 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 (see the file COPYING included with this
+ * distribution); if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+//============================================================
+// MAC address, Ethernet header, and ARP
+//============================================================
+
+#pragma pack(1)
+
+#define IP_HEADER_SIZE 20
+#define IPV6_HEADER_SIZE 40
+
+typedef unsigned char MACADDR [6];
+typedef unsigned long IPADDR;
+typedef unsigned char IPV6ADDR [16];
+
+//-----------------
+// Ethernet address
+//-----------------
+
+typedef struct {
+ MACADDR addr;
+} ETH_ADDR;
+
+typedef struct {
+ ETH_ADDR list[NIC_MAX_MCAST_LIST];
+} MC_LIST;
+
+//----------------
+// Ethernet header
+//----------------
+
+typedef struct
+{
+ MACADDR dest; /* destination eth addr */
+ MACADDR src; /* source ether addr */
+
+# define ETH_P_IP 0x0800 /* IPv4 protocol */
+# define ETH_P_IPV6 0x86DD /* IPv6 protocol */
+# define ETH_P_ARP 0x0806 /* ARP protocol */
+ USHORT proto; /* packet type ID field */
+} ETH_HEADER, *PETH_HEADER;
+
+//----------------
+// ARP packet
+//----------------
+
+typedef struct
+ {
+ MACADDR m_MAC_Destination; // Reverse these two
+ MACADDR m_MAC_Source; // to answer ARP requests
+ USHORT m_Proto; // 0x0806
+
+# define MAC_ADDR_TYPE 0x0001
+ USHORT m_MAC_AddressType; // 0x0001
+
+ USHORT m_PROTO_AddressType; // 0x0800
+ UCHAR m_MAC_AddressSize; // 0x06
+ UCHAR m_PROTO_AddressSize; // 0x04
+
+# define ARP_REQUEST 0x0001
+# define ARP_REPLY 0x0002
+ USHORT m_ARP_Operation; // 0x0001 for ARP request, 0x0002 for ARP reply
+
+ MACADDR m_ARP_MAC_Source;
+ IPADDR m_ARP_IP_Source;
+ MACADDR m_ARP_MAC_Destination;
+ IPADDR m_ARP_IP_Destination;
+ }
+ARP_PACKET, *PARP_PACKET;
+
+//----------
+// IP Header
+//----------
+
+typedef struct {
+# define IPH_GET_VER(v) (((v) >> 4) & 0x0F)
+# define IPH_GET_LEN(v) (((v) & 0x0F) << 2)
+ UCHAR version_len;
+
+ UCHAR tos;
+ USHORT tot_len;
+ USHORT id;
+
+# define IP_OFFMASK 0x1fff
+ USHORT frag_off;
+
+ UCHAR ttl;
+
+# define IPPROTO_UDP 17 /* UDP protocol */
+# define IPPROTO_TCP 6 /* TCP protocol */
+# define IPPROTO_ICMP 1 /* ICMP protocol */
+# define IPPROTO_IGMP 2 /* IGMP protocol */
+ UCHAR protocol;
+
+ USHORT check;
+ ULONG saddr;
+ ULONG daddr;
+ /* The options start here. */
+} IPHDR;
+
+//-----------
+// UDP header
+//-----------
+
+typedef struct {
+ USHORT source;
+ USHORT dest;
+ USHORT len;
+ USHORT check;
+} UDPHDR;
+
+//--------------------------
+// TCP header, per RFC 793.
+//--------------------------
+
+typedef struct {
+ USHORT source; /* source port */
+ USHORT dest; /* destination port */
+ ULONG seq; /* sequence number */
+ ULONG ack_seq; /* acknowledgement number */
+
+# define TCPH_GET_DOFF(d) (((d) & 0xF0) >> 2)
+ UCHAR doff_res;
+
+# define TCPH_FIN_MASK (1<<0)
+# define TCPH_SYN_MASK (1<<1)
+# define TCPH_RST_MASK (1<<2)
+# define TCPH_PSH_MASK (1<<3)
+# define TCPH_ACK_MASK (1<<4)
+# define TCPH_URG_MASK (1<<5)
+# define TCPH_ECE_MASK (1<<6)
+# define TCPH_CWR_MASK (1<<7)
+ UCHAR flags;
+
+ USHORT window;
+ USHORT check;
+ USHORT urg_ptr;
+} TCPHDR;
+
+#define TCPOPT_EOL 0
+#define TCPOPT_NOP 1
+#define TCPOPT_MAXSEG 2
+#define TCPOLEN_MAXSEG 4
+
+//------------
+// IPv6 Header
+//------------
+
+typedef struct {
+ UCHAR version_prio;
+ UCHAR flow_lbl[3];
+ USHORT payload_len;
+# define IPPROTO_ICMPV6 0x3a /* ICMP protocol v6 */
+ UCHAR nexthdr;
+ UCHAR hop_limit;
+ IPV6ADDR saddr;
+ IPV6ADDR daddr;
+} IPV6HDR;
+
+//--------------------------------------------
+// IPCMPv6 NS/NA Packets (RFC4443 and RFC4861)
+//--------------------------------------------
+
+// Neighbor Solictiation - RFC 4861, 4.3
+// (this is just the ICMPv6 part of the packet)
+typedef struct {
+ UCHAR type;
+# define ICMPV6_TYPE_NS 135 // neighbour solicitation
+ UCHAR code;
+# define ICMPV6_CODE_0 0 // no specific sub-code for NS/NA
+ USHORT checksum;
+ ULONG reserved;
+ IPV6ADDR target_addr;
+} ICMPV6_NS;
+
+// Neighbor Advertisement - RFC 4861, 4.4 + 4.6/4.6.1
+// (this is just the ICMPv6 payload)
+typedef struct {
+ UCHAR type;
+# define ICMPV6_TYPE_NA 136 // neighbour advertisement
+ UCHAR code;
+# define ICMPV6_CODE_0 0 // no specific sub-code for NS/NA
+ USHORT checksum;
+ UCHAR rso_bits; // Router(0), Solicited(2), Ovrrd(4)
+ UCHAR reserved[3];
+ IPV6ADDR target_addr;
+// always include "Target Link-layer Address" option (RFC 4861 4.6.1)
+ UCHAR opt_type;
+#define ICMPV6_OPTION_TLLA 2
+ UCHAR opt_length;
+#define ICMPV6_LENGTH_TLLA 1 // multiplied by 8 -> 1 = 8 bytes
+ MACADDR target_macaddr;
+} ICMPV6_NA;
+
+// this is the complete packet with Ethernet and IPv6 headers
+typedef struct {
+ ETH_HEADER eth;
+ IPV6HDR ipv6;
+ ICMPV6_NA icmpv6;
+} ICMPV6_NA_PKT;
+
+#pragma pack()