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Annotation of embedaddon/coova-chilli/src/tun.h, revision 1.1.1.1

1.1       misho       1: /* 
                      2:  * TUN interface functions.
                      3:  * Copyright (C) 2002, 2003, 2004, 2005 Mondru AB.
                      4:  * Copyright (C) 2007-2008 David Bird <david@coova.com>
                      5:  * 
                      6:  * The contents of this file may be used under the terms of the GNU
                      7:  * General Public License Version 2, provided that the above copyright
                      8:  * notice and this permission notice is included in all copies or
                      9:  * substantial portions of the software.
                     10:  * 
                     11:  */
                     12: 
                     13: #ifndef _TUN_H
                     14: #define _TUN_H
                     15: 
                     16: #include "pkt.h"
                     17: #include "net.h"
                     18: 
                     19: #define PACKET_MAX      8196 /* Maximum packet size we receive */
                     20: #define TUN_SCRIPTSIZE   512
                     21: #define TUN_ADDRSIZE     128
                     22: #define TUN_NLBUFSIZE   1024
                     23: #define TUN_MAX_INTERFACES 4
                     24: 
                     25: /* ***********************************************************
                     26:  * Information storage for each tun instance
                     27:  *************************************************************/
                     28: 
                     29: struct tun_t {
                     30:   int debug;
                     31:   int addrs;   /* Number of allocated IP addresses */
                     32:   int routes;  /* One if we allocated an automatic route */
                     33:   int routeidx; /* default route interface index */
                     34:   int (*cb_ind) (struct tun_t *tun, void *pack, size_t len, int idx);
                     35: 
                     36:   int _interface_count;
                     37:   struct _net_interface _interfaces[TUN_MAX_INTERFACES];
                     38: };
                     39: 
                     40: #define tun(x,i) ((x)->_interfaces[(i)])
                     41: #define tuntap(x) tun((x),0)
                     42: 
                     43: int tun_new(struct tun_t **tun);
                     44: int tun_free(struct tun_t *this);
                     45: int tun_decaps(struct tun_t *this, int idx);
                     46: int tun_encaps(struct tun_t *this, void *pack, size_t len, int idx);
                     47: 
                     48: /*int tun_addaddr(struct tun_t *this, struct in_addr *addr, struct in_addr *dstaddr, struct in_addr *netmask);
                     49: int tun_setaddr(struct tun_t *this, struct in_addr *our_adr, struct in_addr *his_adr, struct in_addr *net_mask);
                     50: int tun_addroute(struct tun_t *this, struct in_addr *dst, struct in_addr *gateway, struct in_addr *mask);
                     51: int tun_delroute(struct tun_t *this, struct in_addr *dst, struct in_addr *gateway, struct in_addr *mask);*/
                     52: 
                     53: int tun_set_cb_ind(struct tun_t *this, int (*cb_ind) (struct tun_t *tun, void *pack, size_t len, int idx));
                     54: 
                     55: int tun_setaddr(struct tun_t *this, struct in_addr *addr, struct in_addr *dstaddr, struct in_addr *netmask);
                     56: 
                     57: int tun_runscript(struct tun_t *tun, char* script);
                     58: 
                     59: net_interface *tun_nextif(struct tun_t *tun);
                     60: int tun_name2idx(struct tun_t *tun, char *name);
                     61: 
                     62: #define tun_maxfd(tun,max) {int i; for (i=0; i<(tun)->_interface_count; i++) net_maxfd(&(tun)->_interfaces[i], (max));}
                     63: #define tun_fdset(tun,fds) {int i; for (i=0; i<(tun)->_interface_count; i++) net_fdset(&(tun)->_interfaces[i], (fds));}
                     64: #define tun_ckset(tun,fds) {int i; for (i=0; i<(tun)->_interface_count; i++) { \
                     65:   if (net_isset(&(tun)->_interfaces[i], (fds)) && tun_decaps((tun), i) < 0) log_err(0, "tun_decaps()"); } }
                     66: #define tun_close(tun) {int i; for (i=0; i<(tun)->_interface_count; i++) net_close(&(tun)->_interfaces[i]);}
                     67: 
                     68: #endif /* !_TUN_H */