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/netatm/atm_cm.h

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    1 /*-
    2  *
    3  * ===================================
    4  * HARP  |  Host ATM Research Platform
    5  * ===================================
    6  *
    7  *
    8  * This Host ATM Research Platform ("HARP") file (the "Software") is
    9  * made available by Network Computing Services, Inc. ("NetworkCS")
   10  * "AS IS".  NetworkCS does not provide maintenance, improvements or
   11  * support of any kind.
   12  *
   13  * NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
   14  * INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
   15  * AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
   16  * SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
   17  * In no event shall NetworkCS be responsible for any damages, including
   18  * but not limited to consequential damages, arising from or relating to
   19  * any use of the Software or related support.
   20  *
   21  * Copyright 1994-1998 Network Computing Services, Inc.
   22  *
   23  * Copies of this Software may be made, however, the above copyright
   24  * notice must be reproduced on all copies.
   25  *
   26  *      @(#) $FreeBSD: src/sys/netatm/atm_cm.h,v 1.7.8.1 2005/01/31 23:26:25 imp Exp $
   27  *
   28  */
   29 
   30 /*
   31  * Core ATM Services
   32  * -----------------
   33  *
   34  * ATM Connection Management definitions
   35  *
   36  */
   37 
   38 #ifndef _NETATM_ATM_CM_H
   39 #define _NETATM_ATM_CM_H
   40 
   41 /*
   42  * Forward declaration
   43  */
   44 struct atm_connection;
   45 struct atm_attributes;
   46 
   47 
   48 #ifdef _KERNEL
   49 /*
   50  * Structure used to define a kernel ATM endpoint service module and its 
   51  * associated entry points.  An endpoint service is defined as a kernel 
   52  * entity which will serve as the endpoint of an ATM connection, i.e. it is
   53  * responsible for issuing/receiving requests to/from the connection manager.
   54  */
   55 struct atm_endpoint {
   56         struct atm_endpoint *ep_next;   /* Next in registry list */
   57         u_int           ep_id;          /* Endpoint ID (see below) */
   58 
   59 /* Exported functions: Miscellaneous */
   60         int             (*ep_ioctl)     /* Ioctl */
   61                                 (int, caddr_t, caddr_t);
   62         caddr_t         (*ep_getname)   /* Get application/owner name */
   63                                 (void *);
   64 
   65 /* Exported functions: Connection Manager Control API */
   66         void            (*ep_connected) /* Call connected */
   67                                 (void *);
   68         void            (*ep_cleared)   /* Call cleared */
   69                                 (void *, struct t_atm_cause *);
   70         int             (*ep_incoming)  /* Incoming call */
   71                                 (void *, struct atm_connection *,
   72                                         struct atm_attributes *, void **);
   73         int             (*ep_addparty)  /* Add Party notification */
   74                                 (void *, int, int);
   75         int             (*ep_dropparty) /* Drop Party notification */
   76                                 (void *, int, int);
   77 
   78 /* Exported functions: Connection Manager Data API: CPCS */ 
   79         void            (*ep_cpcs_ctl)  /* Control operation */
   80                                 (int, void *, void *);
   81         void            (*ep_cpcs_data) /* Received data */
   82                                 (void *, KBuffer *);
   83 
   84 /* Exported functions: Connection Manager Data API: SAAL */ 
   85         void            (*ep_saal_ctl)  /* Control operation */
   86                                 (int, void *, void *);
   87         void            (*ep_saal_data) /* Received data */
   88                                 (void *, KBuffer *);
   89 
   90 /* Exported functions: Connection Manager Data API: SSCOP */ 
   91         void            (*ep_sscop_ctl) /* Control operation */
   92                                 (int, void *, void *, void *);
   93         void            (*ep_sscop_data)        /* Received data */
   94                                 (void *, KBuffer *, u_int);
   95 };
   96 typedef struct atm_endpoint     Atm_endpoint;
   97 #endif  /* _KERNEL */
   98 
   99 /*
  100  * Endpoint IDs
  101  */
  102 #define ENDPT_UNKNOWN           0       /* Unknown */
  103 #define ENDPT_IP                1       /* IP over ATM */
  104 #define ENDPT_ATMARP            2       /* ATMARP */
  105 #define ENDPT_SPANS_SIG         3       /* SPANS Signalling */
  106 #define ENDPT_SPANS_CLS         4       /* SPANS CLS */
  107 #define ENDPT_UNI_SIG           5       /* UNI Signalling */
  108 #define ENDPT_SOCK_AAL5         6       /* Socket - AAL5 */
  109 #define ENDPT_SOCK_SSCOP        7       /* Socket - SSCOP */
  110 #define ENDPT_MAX               7
  111 
  112 
  113 /*
  114  * ATM Connection Attributes
  115  *
  116  * Note: Attribute tag values are the same as the SVE_tag values.
  117  *       Unless otherwise specified, attribute field values are the same 
  118  *       as the corresponding socket option values.
  119  *       The above values are all defined in netatm/atm.h.  
  120  */
  121 
  122 /* AAL Attributes */
  123 struct t_atm_aal4 {
  124         int32_t         forward_max_SDU_size;
  125         int32_t         backward_max_SDU_size;
  126         int32_t         SSCS_type;
  127         int32_t         mid_low;
  128         int32_t         mid_high;
  129 };
  130 
  131 struct attr_aal {
  132         int             tag;            /* Attribute tag */
  133         Aal_t           type;           /* AAL type (discriminator) */
  134         union {
  135                 struct t_atm_aal4 aal4;
  136                 struct t_atm_aal5 aal5;
  137         } v;                            /* Attribute value */
  138 };
  139 
  140 /* Traffic Descriptor Attributes */
  141 struct attr_traffic {
  142         int             tag;            /* Attribute tag */
  143         struct t_atm_traffic    v;      /* Attribute value */
  144 };
  145 
  146 /* Broadband Bearer Attributes */
  147 struct attr_bearer {
  148         int             tag;            /* Attribute tag */
  149         struct t_atm_bearer     v;      /* Attribute value */
  150 };
  151 
  152 /* Broadband High Layer Information Attributes */
  153 struct attr_bhli {
  154         int             tag;            /* Attribute tag */
  155         struct t_atm_bhli       v;      /* Attribute value */
  156 };
  157 
  158 /* Broadband Low Layer Information Attributes */
  159 struct attr_blli {
  160         int             tag_l2;         /* Layer 2 attribute tag */
  161         int             tag_l3;         /* Layer 3 attribute tag */
  162         struct t_atm_blli       v;      /* Attribute value */
  163 };
  164 
  165 /* Logical Link Control Attributes (multiplexing use only, not signalled) */
  166 struct attr_llc {
  167         int             tag;            /* Attribute tag */
  168         struct t_atm_llc        v;      /* Attribute value */
  169 };
  170 
  171 /* Called Party Attributes */
  172 struct attr_called {
  173         int             tag;            /* Attribute tag */
  174         Atm_addr        addr;           /* Called party address */
  175         Atm_addr        subaddr;        /* Called party subaddress */
  176 };
  177 
  178 /* Calling Party Attributes */
  179 struct attr_calling {
  180         int             tag;            /* Attribute tag */
  181         Atm_addr        addr;           /* Calling party address */
  182         Atm_addr        subaddr;        /* Calling party subaddress */
  183         struct t_atm_caller_id  cid;    /* Caller ID */
  184 };
  185 
  186 /* Quality of Service Attributes */
  187 struct attr_qos {
  188         int             tag;            /* Attribute tag */
  189         struct t_atm_qos        v;      /* Attribute value */
  190 };
  191 
  192 /* Transit Network Attributes */
  193 struct attr_transit {
  194         int             tag;            /* Attribute tag */
  195         struct t_atm_transit    v;      /* Attribute value */
  196 };
  197 
  198 /* Cause Attributes */
  199 struct attr_cause {
  200         int             tag;            /* Attribute tag */
  201         struct t_atm_cause      v;      /* Attribute value */
  202 };
  203 
  204 
  205 struct atm_attributes {
  206         struct atm_nif          *nif;   /* Network interface */
  207         u_int                   api;    /* Connect Mgr Data API (see below) */
  208         int                     api_init;/* API initialization parameter */
  209         u_short                 headin; /* Input buffer headroom */
  210         u_short                 headout;/* Output buffer headroom */
  211         struct attr_aal         aal;    /* AAL attributes */
  212         struct attr_traffic     traffic;/* Traffic descriptor attributes */
  213         struct attr_bearer      bearer; /* Broadband bearer attributes */
  214         struct attr_bhli        bhli;   /* Broadband high layer attributes */
  215         struct attr_blli        blli;   /* Broadband low layer attributes */
  216         struct attr_llc         llc;    /* Logical link control attributes */
  217         struct attr_called      called; /* Called party attributes */
  218         struct attr_calling     calling;/* Calling party attributes */
  219         struct attr_qos         qos;    /* Quality of service attributes */
  220         struct attr_transit     transit;/* Transit network attributes */
  221         struct attr_cause       cause;  /* Cause attributes */
  222 };
  223 typedef struct atm_attributes   Atm_attributes;
  224 
  225 /*
  226  * Connection Manager Data APIs
  227  */
  228 #define CMAPI_CPCS      0               /* AAL CPCS */
  229 #define CMAPI_SAAL      1               /* Signalling AAL */
  230 #define CMAPI_SSCOP     2               /* Reliable data (SSCOP) */
  231 
  232 
  233 #ifdef _KERNEL
  234 /*
  235  * ATM Connection Instance
  236  *
  237  * There will be one connection block for each endpoint <-> Connection Manager 
  238  * API instance.  Note that with connection multiplexors (e.g. LLC), there 
  239  * may be multiple connections per VCC.
  240  */
  241 struct atm_connection {
  242         struct atm_connection *co_next; /* Multiplexor/listen queue link */
  243         struct atm_connection *co_mxh;  /* Connection multiplexor head */
  244         u_char          co_flags;       /* Connection flags (see below) */
  245         u_char          co_state;       /* User <-> CM state (see below) */
  246         Encaps_t        co_mpx;         /* Multiplexor type */
  247         void            *co_toku;       /* Endpoint's session token */
  248         Atm_endpoint    *co_endpt;      /* Endpoint service */
  249         struct atm_connvc *co_connvc;   /* Connection VCC */
  250         struct attr_llc co_llc;         /* Connection LLC header */
  251         Atm_attributes  *co_lattr;      /* Listening attributes */
  252 };
  253 typedef struct atm_connection   Atm_connection;
  254 
  255 /*
  256  * Connection Flags
  257  */
  258 #define COF_P2P         0x01            /* Point-to-point */
  259 #define COF_P2MP        0x02            /* Point-to-multipoint */
  260 
  261 /*
  262  * Endpoint <-> Connection Manager States
  263  */
  264 #define COS_FREE        0               /* Not allocated */
  265 #define COS_OUTCONN     1               /* Outgoing connection pending */
  266 #define COS_LISTEN      2               /* Listening for connection */
  267 #define COS_INCONN      3               /* Incoming connection pending */
  268 #define COS_INACCEPT    4               /* Incoming connection accepted */
  269 #define COS_ACTIVE      5               /* Connection active */
  270 #define COS_CLEAR       6               /* Connection is clearing */
  271 
  272 
  273 /*
  274  * ATM Connection VCC Instance
  275  *
  276  * There will be one connection-vcc block for each VCC created by the
  277  * Connection Manager. For multiplexed connections, there may be multiple
  278  * connection blocks associated with each connection-vcc.  This block is
  279  * used to control the Connection Manager <-> VCC interface, including the 
  280  * interfaces to stack management and the signalling manager.
  281  */
  282 struct atm_connvc {
  283         Qelem_t         cvc_q;          /* Queueing links */
  284         Atm_connection  *cvc_conn;      /* Connection head */
  285         struct vccb     *cvc_vcc;       /* VCC for connection */
  286         struct sigmgr   *cvc_sigmgr;    /* VCC signalling manager */
  287         u_char          cvc_flags;      /* Connection flags (see below) */
  288         u_char          cvc_state;      /* CM - VCC state (see below) */
  289         void            *cvc_tokl;      /* Stack lower layer token */
  290         void            (*cvc_lower)    /* Stack lower layer handler */
  291                                 (int, void *, intptr_t, intptr_t);
  292         u_short         cvc_upcnt;      /* Up stack calls in progress */
  293         u_short         cvc_downcnt;    /* Down stack calls in progress */
  294         KBuffer         *cvc_rcvq;      /* Packet receive queue */
  295         int             cvc_rcvqlen;    /* Receive queue length */
  296         Atm_attributes  cvc_attr;       /* VCC attributes */
  297         struct atm_time cvc_time;       /* Timer controls */
  298 };
  299 typedef struct atm_connvc       Atm_connvc;
  300 
  301 /*
  302  * Connection Flags
  303  */
  304 #define CVCF_ABORTING   0x01            /* VCC abort is pending */
  305 #define CVCF_INCOMQ     0x02            /* VCC is on incoming queue */
  306 #define CVCF_CONNQ      0x04            /* VCC is on connection queue */
  307 #define CVCF_CALLER     0x08            /* We are the call originator */
  308 
  309 /*
  310  * Connection Manager <-> VCC States
  311  */
  312 #define CVCS_FREE       0               /* Not allocated */
  313 #define CVCS_SETUP      1               /* Call setup pending */
  314 #define CVCS_INIT       2               /* Stack INIT pending */
  315 #define CVCS_INCOMING   3               /* Incoming call present */
  316 #define CVCS_ACCEPT     4               /* Incoming call accepted */
  317 #define CVCS_REJECT     5               /* Incoming call rejected */
  318 #define CVCS_ACTIVE     6               /* Stack active */
  319 #define CVCS_RELEASE    7               /* Connection release pending */
  320 #define CVCS_CLEAR      8               /* Call has been cleared */
  321 #define CVCS_TERM       9               /* Stack TERM pending */
  322 
  323 
  324 /*
  325  * Connection VCC variables
  326  */
  327 #define CVC_RCVQ_MAX    3               /* Max length of receive queue */
  328 
  329 
  330 /*
  331  * Timer macros
  332  */
  333 #define CVC_TIMER(s, t)         atm_timeout(&(s)->cvc_time, (t), atm_cm_timeout)
  334 #define CVC_CANCEL(s)           atm_untimeout(&(s)->cvc_time)
  335 
  336 
  337 /*
  338  * Connection Manager Statistics
  339  */
  340 struct atm_cm_stat {
  341         u_long          cms_llcdrop;    /* Packets dropped by llc demux'ing */
  342         u_long          cms_llcid;      /* Packets with unknown llc id */
  343         u_long          cms_rcvconn;    /* Packets dropped, bad conn state */
  344         u_long          cms_rcvconnvc;  /* Packets dropped, bad connvc state */
  345 };
  346 
  347 void atm_cm_init(void);
  348 
  349 #endif  /* _KERNEL */
  350 
  351 #endif  /* _NETATM_ATM_CM_H */

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