release/src/router/xl2tpd/misc.h

   1 /*
   2  * Layer Two Tunnelling Protocol Daemon
   3  * Copyright (C) 1998 Adtran, Inc.
   4  * Copyright (C) 2002 Jeff McAdams
   5  *
   6  * Mark Spencer
   7  *
   8  * This software is distributed under the terms
   9  * of the GPL, which you should have received
  10  * along with this source.
  11  *
  12  * Misc stuff...
  13  */
  14
  15 #ifndef _MISC_H
  16 #define _MISC_H
  17
  18 #include <syslog.h>
  19
  20 struct tunnel;
  21 struct buffer
  22 {
  23     int type;
  24     void *rstart;
  25     void *rend;
  26     void *start;
  27     int len;
  28     int maxlen;
  29 #if 0
  30     unsigned int addr;
  31     int port;
  32 #else
  33     struct sockaddr_in peer;
  34 #endif
  35     struct tunnel *tunnel;      /* Who owns this packet, if it's a control */
  36     int retries;                /* Again, if a control packet, how many retries? */
  37 };
  38
  39 struct ppp_opts
  40 {
  41     char option[MAXSTRLEN];
  42     struct ppp_opts *next;
  43 };
  44
  45 #define IPADDY(a) inet_ntoa(*((struct in_addr *)&(a)))
  46
  47 #define DEBUG c ? c->debug || t->debug : t->debug
  48
  49 #ifdef USE_SWAPS_INSTEAD
  50 #define SWAPS(a) ((((a) & 0xFF) << 8 ) | (((a) >> 8) & 0xFF))
  51 #ifdef htons
  52 #undef htons
  53 #endif
  54 #ifdef ntohs
  55 #undef htons
  56 #endif
  57 #define htons(a) SWAPS(a)
  58 #define ntohs(a) SWAPS(a)
  59 #endif
  60
  61 #define halt() printf("Halted.\n") ; for(;;)
  62
  63 extern char hostname[];
  64 extern void l2tp_log (int level, const char *fmt, ...);
  65 extern struct buffer *new_buf (int);
  66 extern void udppush_handler (int);
  67 extern int addfcs (struct buffer *buf);
  68 extern inline void swaps (void *, int);
  69 extern void do_packet_dump (struct buffer *);
  70 extern void status (const char *fmt, ...);
  71 extern void status_handler (int signal);
  72 extern int getPtyMaster(char *, int);
  73 extern void do_control (void);
  74 extern void recycle_buf (struct buffer *);
  75 extern void safe_copy (char *, char *, int);
  76 extern void opt_destroy (struct ppp_opts *);
  77 extern struct ppp_opts *add_opt (struct ppp_opts *, char *, ...);
  78 extern void process_signal (void);
  79 #endif