FreeBSD/Linux Kernel Cross Reference
sys/netnatm/natm.h

     /*-
      * Copyright (c) 1996 Charles D. Cranor and Washington University.
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
      *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by Charles D. Cranor and
     *      Washington University.
     * 4. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     * $NetBSD: natm.h,v 1.1 1996/07/04 03:20:12 chuck Exp $
     * $FreeBSD$
     */
    
    /*
     * natm.h: native mode atm
     */
    
    /*
     * supported protocols
     */
    #define PROTO_NATMAAL0          1
    #define PROTO_NATMAAL5          2       
    
    /*
     * sockaddr_natm
     */
    
    struct sockaddr_natm {
            unsigned char   snatm_len;              /* length */
            sa_family_t     snatm_family;           /* AF_NATM */
            char            snatm_if[IFNAMSIZ];     /* interface name */
            u_int16_t       snatm_vci;              /* vci */
            u_int8_t        snatm_vpi;              /* vpi */
    };
    
    #ifdef _KERNEL
    
    /*
     * natm protocol control block
     */
    struct natmpcb {
            LIST_ENTRY(natmpcb) pcblist;    /* list pointers */
            u_int           npcb_inq;       /* # of our pkts in proto q */
            struct socket   *npcb_socket;   /* backpointer to socket */
            struct ifnet    *npcb_ifp;      /* pointer to hardware */
            struct in_addr  ipaddr;         /* remote IP address, if APCB_IP */
            u_int16_t       npcb_vci;       /* VCI */
            u_int8_t        npcb_vpi;       /* VPI */
            u_int8_t        npcb_flags;     /* flags */
    };
    
    /* flags */
    #define NPCB_FREE       0x01            /* free (not on any list) */
    #define NPCB_CONNECTED  0x02            /* connected */
    #define NPCB_IP         0x04            /* used by IP */
    #define NPCB_DRAIN      0x08            /* destroy as soon as inq == 0 */
    
    /* flag arg to npcb_free */
    #define NPCB_REMOVE     0               /* remove from global list */
    #define NPCB_DESTROY    1               /* destroy and be free */
    
    LIST_HEAD(npcblist, natmpcb);
    
    /* global data structures */
    
    extern struct mtx natm_mtx;             /* global netnatm lock */
    extern struct npcblist natm_pcbs;       /* global list of pcbs */
    #define NATM_STAT
    #ifdef NATM_STAT
    extern  u_int   natm_sodropcnt;
    extern  u_int   natm_sodropbytes;       /* account of droppage */
    extern  u_int   natm_sookcnt;
    extern  u_int   natm_sookbytes;         /* account of ok */
    #endif
    
    /* locking macros */
    #define NATM_LOCK_INIT()        mtx_init(&natm_mtx, "natm_mtx", NULL, MTX_DEF)
    #define NATM_LOCK()             mtx_lock(&natm_mtx)
   #define NATM_UNLOCK()           mtx_unlock(&natm_mtx)
   #define NATM_LOCK_ASSERT()      mtx_assert(&natm_mtx, MA_OWNED)
   
   /* external functions */
   
   /* natm_pcb.c */
   struct  natmpcb *npcb_alloc(int);
   void    npcb_free(struct natmpcb *, int);
   struct  natmpcb *npcb_add(struct natmpcb *, struct ifnet *, uint16_t, uint8_t);
   
   /* natm.c */
   extern struct pr_usrreqs natm_usrreqs;
   
   #ifdef SYSCTL_HANDLER_ARGS
   int     natm0_sysctl(SYSCTL_HANDLER_ARGS);
   int     natm5_sysctl(SYSCTL_HANDLER_ARGS);
   #endif
   
   void    natmintr(struct mbuf *);
   
   #endif

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