release/src/router/xl2tpd/avp.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  * Attribute Value Pair structures and
  13  * definitions
  14  */
  15
  16 #include "common.h"
  17
  18 struct avp_hdr
  19 {
  20     _u16 length;
  21     _u16 vendorid;
  22     _u16 attr;
  23 } __attribute__((packed));
  24
  25 struct avp
  26 {
  27     int num;                    /* Number of AVP */
  28     int m;                      /* Set M? */
  29     int (*handler) (struct tunnel *, struct call *, void *, int);
  30     /* This should handle the AVP
  31        taking a tunnel, call, the data,
  32        and the length of the AVP as
  33        parameters.  Should return 0
  34        upon success */
  35     char *description;          /* A name, for debugging */
  36 };
  37
  38 extern int handle_avps (struct buffer *buf, struct tunnel *t, struct call *c);
  39
  40 extern char *msgtypes[];
  41
  42 #define VENDOR_ID 0             /* We don't have any extensions
  43                                    so we shoouldn't have to
  44                                    worry about this */
  45
  46 /*
  47  * Macros to extract information from length field of AVP
  48  */
  49
  50 #define AMBIT(len) (len & 0x8000)       /* Mandatory bit: If this is
  51                                            set on an unknown AVP,
  52                                            we MUST terminate */
  53
  54 #define AHBIT(len) (len & 0x4000)       /* Hidden bit: Specifies
  55                                            information hiding */
  56
  57 #define AZBITS(len) (len & 0x3C00)      /* Reserved bits:  We must
  58                                            drop anything with any
  59                                            of these set.  */
  60
  61 #define ALENGTH(len) (len & 0x03FF)     /* Length:  Lenth of AVP */
  62
  63 #define MAXAVPSIZE 1023
  64
  65 #define MAXTIME 300             /* time to wait before checking
  66                                    Ns and Nr, in ms */
  67
  68 #define MBIT 0x8000             /* for setting */
  69 #define HBIT 0x4000             /* Set on hidden avp's */
  70
  71 #define ASYNC_FRAMING 2
  72 #define SYNC_FRAMING 1
  73
  74 #define ANALOG_BEARER 2
  75 #define DIGITAL_BEARER 1
  76
  77 #define VENDOR_ERROR 6
  78
  79 #define ERROR_RESERVED 3
  80 #define ERROR_LENGTH 2
  81 #define ERROR_NOTEXIST 1
  82 #define ERROR_NORES 4
  83 #define ERROR_INVALID 6
  84 #define RESULT_CLEAR 1
  85 #define RESULT_ERROR 2
  86 #define RESULT_EXISTS 3
  87 extern void encrypt_avp (struct buffer *, _u16, struct tunnel *);
  88 extern int decrypt_avp (char *, struct tunnel *);
  89 extern int message_type_avp (struct tunnel *, struct call *, void *, int);
  90 extern int protocol_version_avp (struct tunnel *, struct call *, void *, int);
  91 extern int framing_caps_avp (struct tunnel *, struct call *, void *, int);
  92 extern int bearer_caps_avp (struct tunnel *, struct call *, void *, int);
  93 extern int firmware_rev_avp (struct tunnel *, struct call *, void *, int);
  94 extern int hostname_avp (struct tunnel *, struct call *, void *, int);
  95 extern int vendor_avp (struct tunnel *, struct call *, void *, int);
  96 extern int assigned_tunnel_avp (struct tunnel *, struct call *, void *, int);
  97 extern int receive_window_size_avp (struct tunnel *, struct call *, void *,
  98                                     int);
  99 extern int result_code_avp (struct tunnel *, struct call *, void *, int);
 100 extern int assigned_call_avp (struct tunnel *, struct call *, void *, int);
 101 extern int call_serno_avp (struct tunnel *, struct call *, void *, int);
 102 extern int bearer_type_avp (struct tunnel *, struct call *, void *, int);
 103 extern int call_physchan_avp (struct tunnel *, struct call *, void *, int);
 104 extern int dialed_number_avp (struct tunnel *, struct call *, void *, int);
 105 extern int dialing_number_avp (struct tunnel *, struct call *, void *, int);
 106 extern int sub_address_avp (struct tunnel *, struct call *, void *, int);
 107 extern int frame_type_avp (struct tunnel *, struct call *, void *, int);
 108 extern int rx_speed_avp (struct tunnel *, struct call *, void *, int);
 109 extern int tx_speed_avp (struct tunnel *, struct call *, void *, int);
 110 extern int packet_delay_avp (struct tunnel *, struct call *, void *, int);
 111 extern int ignore_avp (struct tunnel *, struct call *, void *, int);
 112 extern int seq_reqd_avp (struct tunnel *, struct call *, void *, int);
 113 extern int challenge_avp (struct tunnel *, struct call *, void *, int);
 114 extern int chalresp_avp (struct tunnel *, struct call *, void *, int);
 115 extern int rand_vector_avp (struct tunnel *, struct call *, void *, int);
 116
 117 extern int add_challenge_avp (struct buffer *, unsigned char *, int);
 118 extern int add_avp_rws (struct buffer *, _u16);
 119 extern int add_tunnelid_avp (struct buffer *, _u16);
 120 extern int add_vendor_avp (struct buffer *);
 121 extern int add_hostname_avp (struct buffer *, const char *);
 122 extern int add_firmware_avp (struct buffer *);
 123 extern int add_bearer_caps_avp (struct buffer *buf, _u16 caps);
 124 extern int add_frame_caps_avp (struct buffer *buf, _u16 caps);
 125 extern int add_protocol_avp (struct buffer *buf);
 126 extern int add_message_type_avp (struct buffer *buf, _u16 type);
 127 extern int add_result_code_avp (struct buffer *buf, _u16, _u16, char *, int);
 128 extern int add_bearer_avp (struct buffer *, int);
 129 extern int add_frame_avp (struct buffer *, int);
 130 extern int add_rxspeed_avp (struct buffer *, int);
 131 extern int add_txspeed_avp (struct buffer *, int);
 132 extern int add_serno_avp (struct buffer *, unsigned int);
 133 #ifdef TEST_HIDDEN
 134 extern int add_callid_avp (struct buffer *, _u16, struct tunnel *);
 135 #else
 136 extern int add_callid_avp (struct buffer *, _u16);
 137 #endif
 138 extern int add_ppd_avp (struct buffer *, _u16);
 139 extern int add_seqreqd_avp (struct buffer *);
 140 extern int add_chalresp_avp (struct buffer *, unsigned char *, int);
 141 extern int add_randvect_avp (struct buffer *, unsigned char *, int);
 142 extern int add_minbps_avp (struct buffer *buf, int speed);      /* jz: needed for outgoing call */
 143 extern int add_maxbps_avp (struct buffer *buf, int speed);      /* jz: needed for outgoing call */
 144 extern int add_number_avp (struct buffer *buf, char *no);       /* jz: needed for outgoing call */