The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/i4b/include/i4b_l3l4.h

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    1 /*-
    2  * Copyright (c) 1997, 2002 Hellmuth Michaelis. All rights reserved.
    3  *
    4  * Redistribution and use in source and binary forms, with or without
    5  * modification, are permitted provided that the following conditions
    6  * are met:
    7  * 1. Redistributions of source code must retain the above copyright
    8  *    notice, this list of conditions and the following disclaimer.
    9  * 2. Redistributions in binary form must reproduce the above copyright
   10  *    notice, this list of conditions and the following disclaimer in the
   11  *    documentation and/or other materials provided with the distribution.
   12  *
   13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   16  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   17  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   18  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   19  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   20  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   21  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   23  * SUCH DAMAGE.
   24  */
   25 
   26 /*---------------------------------------------------------------------------
   27  *
   28  *      i4b_l3l4.h - layer 3 / layer 4 interface
   29  *      ------------------------------------------
   30  *
   31  * $FreeBSD: releng/6.4/sys/i4b/include/i4b_l3l4.h 139790 2005-01-06 22:18:23Z imp $
   32  *
   33  *      last edit-date: [Sun Aug 11 12:52:41 2002]
   34  *
   35  *---------------------------------------------------------------------------*/
   36 
   37 #ifndef _I4B_L3L4_H_
   38 #define _I4B_L3L4_H_
   39 
   40 #define T303VAL (hz*4)                  /* 4 seconds timeout            */
   41 #define T305VAL (hz*30)                 /* 30 seconds timeout           */
   42 #define T308VAL (hz*4)                  /* 4 seconds timeout            */
   43 #define T309VAL (hz*90)                 /* 90 seconds timeout           */
   44 #define T310VAL (hz*60)                 /* 30-120 seconds timeout       */
   45 #define T313VAL (hz*4)                  /* 4 seconds timeout            */
   46 #define T400DEF (hz*10)                 /* 10 seconds timeout           */
   47 
   48 #define MAX_BCHAN 30
   49 #define N_CALL_DESC (MAX_CONTROLLERS*MAX_BCHAN) /* no of call descriptors */
   50 
   51 extern int nctrl;               /* number of controllers detected in system */
   52 
   53 typedef struct bchan_statistics {
   54         int outbytes;
   55         int inbytes;
   56 } bchan_statistics_t;
   57 
   58 /*---------------------------------------------------------------------------*
   59  * table of things the driver needs to know about the b channel
   60  * it is connected to for data transfer
   61  *---------------------------------------------------------------------------*/
   62 typedef struct i4l_isdn_bchan_linktab {
   63         int unit;
   64         int channel;
   65         void (*bch_config)(int unit, int channel, int bprot, int updown);
   66         void (*bch_tx_start)(int unit, int channel);
   67         void (*bch_stat)(int unit, int channel, bchan_statistics_t *bsp);       
   68         struct ifqueue *tx_queue;
   69         struct ifqueue *rx_queue;       /* data xfer for NON-HDLC traffic   */
   70         struct mbuf **rx_mbuf;          /* data xfer for HDLC based traffic */
   71 } isdn_link_t;
   72 
   73 /*---------------------------------------------------------------------------*
   74  * table of things the b channel handler needs to know  about
   75  * the driver it is connected to for data transfer
   76  *---------------------------------------------------------------------------*/
   77 typedef struct i4l_driver_bchan_linktab {
   78         int unit;
   79         void (*bch_rx_data_ready)(int unit);
   80         void (*bch_tx_queue_empty)(int unit);
   81         void (*bch_activity)(int unit, int rxtx);
   82 #define ACT_RX 0
   83 #define ACT_TX 1
   84         void (*line_connected)(int unit, void *cde);
   85         void (*line_disconnected)(int unit, void *cde);
   86         void (*dial_response)(int unit, int stat, cause_t cause);
   87         void (*updown_ind)(int unit, int updown);               
   88 } drvr_link_t;
   89 
   90 /* global linktab functions for controller types (aka hardware drivers) */
   91 struct ctrl_type_desc {
   92         isdn_link_t* (*get_linktab)(int unit, int channel);
   93         void (*set_linktab)(int unit, int channel, drvr_link_t *dlt);
   94 };
   95 extern struct ctrl_type_desc ctrl_types[];
   96 
   97 /* global linktab functions for RBCH userland driver */
   98 
   99 drvr_link_t *rbch_ret_linktab(int unit);
  100 void rbch_set_linktab(int unit, isdn_link_t *ilt);
  101 
  102 /* global linktab functions for IPR network driver */
  103 
  104 drvr_link_t *ipr_ret_linktab(int unit);
  105 void ipr_set_linktab(int unit, isdn_link_t *ilt);
  106 
  107 /* global linktab functions for TEL userland driver */
  108 
  109 drvr_link_t *tel_ret_linktab(int unit);
  110 void tel_set_linktab(int unit, isdn_link_t *ilt);
  111 
  112 /* global linktab functions for ISPPP userland driver */
  113 
  114 drvr_link_t *i4bisppp_ret_linktab(int unit);
  115 void i4bisppp_set_linktab(int unit, isdn_link_t *ilt);
  116 
  117 /* global linktab functions for ING network driver */
  118 
  119 drvr_link_t *ing_ret_linktab(int unit);
  120 void ing_set_linktab(int unit, isdn_link_t *ilt);
  121 
  122 
  123 /*---------------------------------------------------------------------------*
  124  *      this structure describes one call/connection on one B-channel
  125  *      and all its parameters
  126  *---------------------------------------------------------------------------*/
  127 typedef struct
  128 {
  129         u_int   cdid;                   /* call descriptor id           */
  130         int     controller;             /* isdn controller number       */
  131         int     cr;                     /* call reference value         */
  132 
  133         int     crflag;                 /* call reference flag          */
  134 #define CRF_ORIG        0               /* originating side             */
  135 #define CRF_DEST        1               /* destinating side             */
  136 
  137         int     channelid;              /* channel id value             */
  138         int     channelexcl;            /* channel exclusive            */
  139 
  140         int     bprot;                  /* B channel protocol BPROT_XXX */
  141 
  142         int     bcap;                   /* special bearer capabilities BCAP_XXX */      
  143 
  144         int     driver;                 /* driver to use for B channel  */
  145         int     driver_unit;            /* unit for above driver number */
  146         
  147         cause_t cause_in;               /* cause value from NT  */
  148         cause_t cause_out;              /* cause value to NT    */
  149 
  150         int     call_state;             /* from incoming SETUP  */
  151         
  152         u_char  dst_telno[TELNO_MAX];   /* destination number   */
  153         u_char  dst_subaddr[SUBADDR_MAX];       /* destination subaddr  */
  154         u_char  src_telno[TELNO_MAX];   /* source number        */
  155         u_char  src_subaddr[SUBADDR_MAX];       /* source subaddr       */
  156 
  157         int     dst_ton;                /* destination type of number */
  158         int     src_ton;                /* source type of number */
  159 
  160         int     scr_ind;                /* screening ind for incoming call */
  161         int     prs_ind;                /* presentation ind for incoming call */
  162         
  163         int     Q931state;              /* Q.931 state for call */
  164         int     event;                  /* event to be processed */
  165 
  166         int     response;               /* setup response type  */
  167 
  168         int     T303;                   /* SETUP sent response timeout  */
  169         int     T303_first_to;          /* first timeout flag           */
  170 
  171         int     T305;                   /* DISC without PROG IND        */
  172 
  173         int     T308;                   /* RELEASE sent response timeout*/
  174         int     T308_first_to;          /* first timeout flag           */
  175 
  176         int     T309;                   /* data link disconnect timeout */
  177 
  178         int     T310;                   /* CALL PROC received           */
  179 
  180         int     T313;                   /* CONNECT sent timeout         */ 
  181 
  182         int     T400;                   /* L4 timeout */
  183 
  184         isdn_link_t     *ilt;           /* isdn B channel linktab       */
  185         drvr_link_t     *dlt;           /* driver linktab               */
  186 
  187         int     dir;                    /* outgoing or incoming call    */
  188 #define DIR_OUTGOING    0
  189 #define DIR_INCOMING    1
  190 
  191         int     timeout_active;         /* idle timeout() active flag   */
  192 
  193         int     callouts_inited;        /* must init before use */
  194         struct  callout_handle  idle_timeout_handle;
  195         struct  callout_handle  T303_callout;
  196         struct  callout_handle  T305_callout;
  197         struct  callout_handle  T308_callout;
  198         struct  callout_handle  T309_callout;
  199         struct  callout_handle  T310_callout;
  200         struct  callout_handle  T313_callout;
  201         struct  callout_handle  T400_callout;
  202 
  203         int     idletime_state;         /* wait for idle_time begin     */
  204 #define IST_IDLE        0       /* shorthold mode disabled      */
  205 #define IST_NONCHK      1       /* in non-checked window        */
  206 #define IST_CHECK       2       /* in idle check window         */
  207 #define IST_SAFE        3       /* in safety zone               */
  208 
  209         time_t  idletimechk_start;      /* check idletime window start  */
  210         time_t  connect_time;           /* time connect was made        */
  211         time_t  last_active_time;       /* last time with activity      */
  212 
  213                                         /* for incoming connections:    */
  214         time_t  max_idle_time;          /* max time without activity    */
  215 
  216                                         /* for outgoing connections:    */      
  217         msg_shorthold_t shorthold_data; /* shorthold data to use */
  218 
  219         int     aocd_flag;              /* AOCD used for unitlength calc*/
  220         time_t  last_aocd_time;         /* last time AOCD received      */
  221         int     units;                  /* number of AOCD charging units*/
  222         int     units_type;             /* units type: AOCD, AOCE       */
  223         int     cunits;                 /* calculated units             */
  224 
  225         int     isdntxdelay;            /* isdn tx delay after connect  */
  226 
  227         u_char  display[DISPLAY_MAX];   /* display information element  */
  228         char    datetime[DATETIME_MAX]; /* date/time information element*/
  229         u_char  keypad[KEYPAD_MAX];     /* keypad facility              */      
  230 } call_desc_t;
  231 
  232 extern call_desc_t call_desc[N_CALL_DESC];
  233 
  234 /* forward decl. */
  235 struct isdn_diagnostic_request;
  236 struct isdn_dr_prot;
  237 
  238 /*---------------------------------------------------------------------------*
  239  *      this structure "describes" one controller
  240  *---------------------------------------------------------------------------*/
  241 typedef struct
  242 {
  243         int     unit;                   /* unit number of this contr.   */
  244         int     ctrl_type;              /* controller type   (CTRL_XXX) */
  245         int     card_type;              /* card manufacturer (CARD_XXX) */
  246 
  247         int     protocol;               /* D-channel protocol type */
  248 
  249         int     dl_est;                 /* layer 2 established  */
  250 #define DL_DOWN 0
  251 #define DL_UP   1       
  252 
  253         int     nbch;                   /* number of b channels */
  254         int     bch_state[MAX_BCHAN];   /* states of the b channels */
  255 #define BCH_ST_FREE     0       /* free to be used, idle */
  256 #define BCH_ST_RSVD     1       /* reserved, may become free or used */
  257 #define BCH_ST_USED     2       /* in use for data transfer */
  258 
  259         int     tei;                    /* current tei or -1 if invalid */
  260 
  261         /* pointers to functions to be called from L4 */
  262         
  263         void    (*N_CONNECT_REQUEST)    (unsigned int); 
  264         void    (*N_CONNECT_RESPONSE)   (unsigned int, int, int);
  265         void    (*N_DISCONNECT_REQUEST) (unsigned int, int);
  266         void    (*N_ALERT_REQUEST)      (unsigned int); 
  267         int     (*N_DOWNLOAD)           (int unit, int numprotos, struct isdn_dr_prot *protocols);
  268         int     (*N_DIAGNOSTICS)        (int unit, struct isdn_diagnostic_request*);
  269         void    (*N_MGMT_COMMAND)       (int unit, int cmd, void *);
  270 } ctrl_desc_t;
  271 
  272 extern ctrl_desc_t ctrl_desc[MAX_CONTROLLERS];
  273 
  274 #endif /* _I4B_Q931_H_ */

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