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