1 /* TUNTAP.H (c) Copyright James A. Pierson, 2002-2009 */ 2 /* (c) Copyright "Fish" (David B. Trout), 2002-2009 */ 3 /* Hercules - TUN/TAP Abstraction Layer */ 4 5 #ifndef __TUNTAP_H_ 6 #define __TUNTAP_H_ 7 8 #include "hercules.h" 9 10 #if defined( HAVE_STRUCT_SOCKADDR_IN_SIN_LEN ) 11 #define set_sockaddr_in_sin_len( sockaddr_in_ptr ) \ 12 (sockaddr_in_ptr)->sin_len = sizeof( struct sockaddr_in ) 13 #else 14 #define set_sockaddr_in_sin_len( sockaddr_in_ptr ) 15 #endif 16 17 // ==================================================================== 18 // Declarations 19 // ==================================================================== 20 21 // 22 // Create TUN/TAP Interface 23 // 24 25 extern int TUNTAP_CreateInterface ( char* pszTUNDevice, 26 int iFlags, 27 int* pfd, 28 char* pszNetDevName ); 29 30 // 31 // Configure TUN/TAP Interface 32 // 33 34 #ifdef OPTION_TUNTAP_CLRIPADDR 35 extern int TUNTAP_ClrIPAddr ( char* pszNetDevName ); 36 #endif 37 extern int TUNTAP_SetIPAddr ( char* pszNetDevName, 38 char* pszIPAddr ); 39 extern int TUNTAP_SetDestAddr ( char* pszNetDevName, 40 char* pszDestAddr ); 41 42 #ifdef OPTION_TUNTAP_SETNETMASK 43 extern int TUNTAP_SetNetMask ( char* pszNetDevName, 44 char* pszNetMask ); 45 #endif 46 47 extern int TUNTAP_SetMTU ( char* pszNetDevName, 48 char* pszMTU ); 49 #ifdef OPTION_TUNTAP_SETMACADDR 50 extern int TUNTAP_SetMACAddr ( char* pszNetDevName, 51 char* pszMACAddr ); 52 #endif 53 54 extern int TUNTAP_SetFlags ( char* pszNetDevName, 55 int iFlags ); 56 extern int TUNTAP_GetFlags ( char* pszNetDevName, 57 int* piFlags ); 58 59 #ifdef OPTION_TUNTAP_DELADD_ROUTES 60 extern int TUNTAP_AddRoute ( char* pszNetDevName, 61 char* pszDestAddr, 62 char* pszNetMask, 63 char* pszGWAddr, 64 int iFlags ); 65 extern int TUNTAP_DelRoute ( char* pszNetDevName, 66 char* pszDestAddr, 67 char* pszNetMask, 68 char* pszGWAddr, 69 int iFlags ); 70 #endif 71 72 // (the following function used by Win32 *and* NON-Win32 platforms) 73 extern void build_herc_iface_mac ( BYTE* out_mac, const BYTE* in_ip ); 74 75 // 76 // Helper Macros 77 // 78 79 #if defined( WIN32 ) 80 #define TUNTAP_Open tt32_open 81 #define TUNTAP_Close tt32_close 82 #define TUNTAP_Read tt32_read 83 #define TUNTAP_Write tt32_write 84 #define TUNTAP_IOCtl tt32_ioctl 85 #else 86 #define TUNTAP_Open open 87 #define TUNTAP_Close close 88 #define TUNTAP_Read read 89 #define TUNTAP_Write write 90 #define TUNTAP_IOCtl ioctl 91 #endif // defined( WIN32 ) 92 93 #if defined( WIN32 ) 94 95 // Win32 (MinGW/Cygwin/MSVC) does not have these 96 // so we need to define them ourselves... 97 98 struct rtentry 99 { 100 unsigned long int rt_pad1; 101 struct sockaddr rt_dst; // Target address. 102 struct sockaddr rt_gateway; // Gateway addr (RTF_GATEWAY) 103 struct sockaddr rt_genmask; // Target network mask (IP) 104 unsigned short int rt_flags; 105 short int rt_pad2; 106 unsigned long int rt_pad3; 107 unsigned char rt_tos; 108 unsigned char rt_class; 109 short int rt_pad4; 110 short int rt_metric; // +1 for binary compatibility! 111 char * rt_dev; // Forcing the device at add. 112 unsigned long int rt_mtu; // Per route MTU/Window. 113 unsigned long int rt_window; // Window clamping. 114 unsigned short int rt_irtt; // Initial RTT. 115 }; 116 117 #define RTF_UP 0x0001 /* Route usable. */ 118 #define RTF_GATEWAY 0x0002 /* Destination is a gateway. */ 119 120 #define RTF_HOST 0x0004 /* Host entry (net otherwise). */ 121 #define RTF_REINSTATE 0x0008 /* Reinstate route after timeout. */ 122 #define RTF_DYNAMIC 0x0010 /* Created dyn. (by redirect). */ 123 #define RTF_MODIFIED 0x0020 /* Modified dyn. (by redirect). */ 124 #define RTF_MTU 0x0040 /* Specific MTU for this route. */ 125 #define RTF_MSS RTF_MTU /* Compatibility. */ 126 #define RTF_WINDOW 0x0080 /* Per route window clamping. */ 127 #define RTF_IRTT 0x0100 /* Initial round trip time. */ 128 #define RTF_REJECT 0x0200 /* Reject route. */ 129 #define RTF_STATIC 0x0400 /* Manually injected route. */ 130 #define RTF_XRESOLVE 0x0800 /* External resolver. */ 131 #define RTF_NOFORWARD 0x1000 /* Forwarding inhibited. */ 132 #define RTF_THROW 0x2000 /* Go to next class. */ 133 #define RTF_NOPMTUDISC 0x4000 /* Do not send packets with DF. */ 134 135 /* for IPv6 */ 136 #define RTF_DEFAULT 0x00010000 /* default - learned via ND */ 137 #define RTF_ALLONLINK 0x00020000 /* fallback, no routers on link */ 138 #define RTF_ADDRCONF 0x00040000 /* addrconf route - RA */ 139 140 #define RTF_LINKRT 0x00100000 /* link specific - device match */ 141 #define RTF_NONEXTHOP 0x00200000 /* route with no nexthop */ 142 143 #define RTF_CACHE 0x01000000 /* cache entry */ 144 #define RTF_FLOW 0x02000000 /* flow significant route */ 145 #define RTF_POLICY 0x04000000 /* policy route */ 146 147 #define RTCF_VALVE 0x00200000 148 #define RTCF_MASQ 0x00400000 149 #define RTCF_NAT 0x00800000 150 #define RTCF_DOREDIRECT 0x01000000 151 #define RTCF_LOG 0x02000000 152 #define RTCF_DIRECTSRC 0x04000000 153 154 #define RTF_LOCAL 0x80000000 155 #define RTF_INTERFACE 0x40000000 156 #define RTF_MULTICAST 0x20000000 157 #define RTF_BROADCAST 0x10000000 158 #define RTF_NAT 0x08000000 159 160 #define RTF_ADDRCLASSMASK 0xF8000000 161 #define RT_ADDRCLASS(flags) ((__u_int32_t) flags >> 23) 162 163 #define RT_TOS(tos) ((tos) & IPTOS_TOS_MASK) 164 165 #define RT_LOCALADDR(flags) ((flags & RTF_ADDRCLASSMASK) \ 166 == (RTF_LOCAL|RTF_INTERFACE)) 167 168 #define RT_CLASS_UNSPEC 0 169 #define RT_CLASS_DEFAULT 253 170 171 #define RT_CLASS_MAIN 254 172 #define RT_CLASS_LOCAL 255 173 #define RT_CLASS_MAX 255 174 175 #define RTMSG_ACK NLMSG_ACK 176 #define RTMSG_OVERRUN NLMSG_OVERRUN 177 178 #define RTMSG_NEWDEVICE 0x11 179 #define RTMSG_DELDEVICE 0x12 180 #define RTMSG_NEWROUTE 0x21 181 #define RTMSG_DELROUTE 0x22 182 #define RTMSG_NEWRULE 0x31 183 #define RTMSG_DELRULE 0x32 184 #define RTMSG_CONTROL 0x40 185 186 #define RTMSG_AR_FAILED 0x51 /* Address Resolution failed. */ 187 188 /* Use the definitions from the kernel header files. */ 189 //#include <asm/ioctls.h> 190 191 // PROGRAMMING NOTE: Cygwin's headers define some (but not all) 192 // of the below values, but we unfortunately MUST use the below 193 // defined values since they're what TunTap32 expects... 194 195 #undef SIOCGIFCONF // (discard Cygwin's value to use below instead) 196 #undef SIOCGIFFLAGS // (discard Cygwin's value to use below instead) 197 #undef SIOCGIFADDR // (discard Cygwin's value to use below instead) 198 #undef SIOCGIFBRDADDR // (discard Cygwin's value to use below instead) 199 #undef SIOCGIFNETMASK // (discard Cygwin's value to use below instead) 200 #undef SIOCGIFMETRIC // (discard Cygwin's value to use below instead) 201 #undef SIOCGIFMTU // (discard Cygwin's value to use below instead) 202 #undef SIOCGIFHWADDR // (discard Cygwin's value to use below instead) 203 204 /* Routing table calls. */ 205 #define SIOCADDRT 0x890B /* add routing table entry */ 206 #define SIOCDELRT 0x890C /* delete routing table entry */ 207 #define SIOCRTMSG 0x890D /* call to routing system */ 208 209 /* Socket configuration controls. */ 210 #define SIOCGIFNAME 0x8910 /* get iface name */ 211 #define SIOCSIFLINK 0x8911 /* set iface channel */ 212 #define SIOCGIFCONF 0x8912 /* get iface list */ 213 #define SIOCGIFFLAGS 0x8913 /* get flags */ 214 #define SIOCSIFFLAGS 0x8914 /* set flags */ 215 #define SIOCGIFADDR 0x8915 /* get PA address */ 216 #define SIOCSIFADDR 0x8916 /* set PA address */ 217 #define SIOCGIFDSTADDR 0x8917 /* get remote PA address */ 218 #define SIOCSIFDSTADDR 0x8918 /* set remote PA address */ 219 #define SIOCGIFBRDADDR 0x8919 /* get broadcast PA address */ 220 #define SIOCSIFBRDADDR 0x891a /* set broadcast PA address */ 221 #define SIOCGIFNETMASK 0x891b /* get network PA mask */ 222 #define SIOCSIFNETMASK 0x891c /* set network PA mask */ 223 #define SIOCGIFMETRIC 0x891d /* get metric */ 224 #define SIOCSIFMETRIC 0x891e /* set metric */ 225 #define SIOCGIFMEM 0x891f /* get memory address (BSD) */ 226 #define SIOCSIFMEM 0x8920 /* set memory address (BSD) */ 227 #define SIOCGIFMTU 0x8921 /* get MTU size */ 228 #define SIOCSIFMTU 0x8922 /* set MTU size */ 229 #define SIOCSIFHWADDR 0x8924 /* set hardware address */ 230 #define SIOCGIFENCAP 0x8925 /* get/set encapsulations */ 231 #define SIOCSIFENCAP 0x8926 232 #define SIOCGIFHWADDR 0x8927 /* Get hardware address */ 233 #define SIOCGIFSLAVE 0x8929 /* Driver slaving support */ 234 #define SIOCSIFSLAVE 0x8930 235 #define SIOCADDMULTI 0x8931 /* Multicast address lists */ 236 #define SIOCDELMULTI 0x8932 237 #define SIOCGIFINDEX 0x8933 /* name -> if_index mapping */ 238 #define SIOGIFINDEX SIOCGIFINDEX /* misprint compatibility :-) */ 239 #define SIOCSIFPFLAGS 0x8934 /* set/get extended flags set */ 240 #define SIOCGIFPFLAGS 0x8935 241 #define SIOCDIFADDR 0x8936 /* delete PA address */ 242 #define SIOCSIFHWBROADCAST 0x8937 /* set hardware broadcast addr */ 243 #define SIOCGIFCOUNT 0x8938 /* get number of devices */ 244 245 #define SIOCGIFBR 0x8940 /* Bridging support */ 246 #define SIOCSIFBR 0x8941 /* Set bridging options */ 247 248 #define SIOCGIFTXQLEN 0x8942 /* Get the tx queue length */ 249 #define SIOCSIFTXQLEN 0x8943 /* Set the tx queue length */ 250 251 252 /* ARP cache control calls. */ 253 /* 0x8950 - 0x8952 * obsolete calls, don't re-use */ 254 #define SIOCDARP 0x8953 /* delete ARP table entry */ 255 #define SIOCGARP 0x8954 /* get ARP table entry */ 256 #define SIOCSARP 0x8955 /* set ARP table entry */ 257 258 /* RARP cache control calls. */ 259 #define SIOCDRARP 0x8960 /* delete RARP table entry */ 260 #define SIOCGRARP 0x8961 /* get RARP table entry */ 261 #define SIOCSRARP 0x8962 /* set RARP table entry */ 262 263 /* Driver configuration calls */ 264 265 #define SIOCGIFMAP 0x8970 /* Get device parameters */ 266 #define SIOCSIFMAP 0x8971 /* Set device parameters */ 267 268 /* DLCI configuration calls */ 269 270 #define SIOCADDDLCI 0x8980 /* Create new DLCI device */ 271 #define SIOCDELDLCI 0x8981 /* Delete DLCI device */ 272 273 /* Device private ioctl calls. */ 274 275 /* These 16 ioctls are available to devices via the do_ioctl() device 276 vector. Each device should include this file and redefine these 277 names as their own. Because these are device dependent it is a good 278 idea _NOT_ to issue them to random objects and hope. */ 279 280 #define SIOCDEVPRIVATE 0x89F0 /* to 89FF */ 281 282 /* 283 * These 16 ioctl calls are protocol private 284 */ 285 286 #define SIOCPROTOPRIVATE 0x89E0 /* to 89EF */ 287 288 #endif // defined( WIN32 ) 289 290 #endif // __TUNTAP_H_ 291 292