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/netnatm/natm.h

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    1 /*      $NetBSD: natm.h,v 1.1 1996/07/04 03:20:12 chuck Exp $   */
    2 /* $FreeBSD$ */
    3 
    4 /*-
    5  *
    6  * Copyright (c) 1996 Charles D. Cranor and Washington University.
    7  * All rights reserved.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  * 3. All advertising materials mentioning features or use of this software
   18  *    must display the following acknowledgement:
   19  *      This product includes software developed by Charles D. Cranor and
   20  *      Washington University.
   21  * 4. The name of the author may not be used to endorse or promote products
   22  *    derived from this software without specific prior written permission.
   23  *
   24  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   25  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   26  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   27  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   28  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   29  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   30  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   31  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   32  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   33  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   34  */
   35 
   36 /*
   37  * natm.h: native mode atm
   38  */
   39 
   40 /*
   41  * supported protocols
   42  */
   43 #define PROTO_NATMAAL0          1
   44 #define PROTO_NATMAAL5          2       
   45 
   46 /*
   47  * sockaddr_natm
   48  */
   49 
   50 struct sockaddr_natm {
   51         unsigned char   snatm_len;              /* length */
   52         sa_family_t     snatm_family;           /* AF_NATM */
   53         char            snatm_if[IFNAMSIZ];     /* interface name */
   54         u_int16_t       snatm_vci;              /* vci */
   55         u_int8_t        snatm_vpi;              /* vpi */
   56 };
   57 
   58 #ifdef _KERNEL
   59 
   60 /*
   61  * natm protocol control block
   62  */
   63 struct natmpcb {
   64         LIST_ENTRY(natmpcb) pcblist;    /* list pointers */
   65         u_int           npcb_inq;       /* # of our pkts in proto q */
   66         struct socket   *npcb_socket;   /* backpointer to socket */
   67         struct ifnet    *npcb_ifp;      /* pointer to hardware */
   68         struct in_addr  ipaddr;         /* remote IP address, if APCB_IP */
   69         u_int16_t       npcb_vci;       /* VCI */
   70         u_int8_t        npcb_vpi;       /* VPI */
   71         u_int8_t        npcb_flags;     /* flags */
   72 };
   73 
   74 /* flags */
   75 #define NPCB_FREE       0x01            /* free (not on any list) */
   76 #define NPCB_CONNECTED  0x02            /* connected */
   77 #define NPCB_IP         0x04            /* used by IP */
   78 #define NPCB_DRAIN      0x08            /* destory as soon as inq == 0 */
   79 
   80 /* flag arg to npcb_free */
   81 #define NPCB_REMOVE     0               /* remove from global list */
   82 #define NPCB_DESTROY    1               /* destroy and be free */
   83 
   84 LIST_HEAD(npcblist, natmpcb);
   85 
   86 /* global data structures */
   87 
   88 extern struct mtx natm_mtx;             /* global netnatm lock */
   89 extern struct npcblist natm_pcbs;       /* global list of pcbs */
   90 #define NATM_STAT
   91 #ifdef NATM_STAT
   92 extern  u_int   natm_sodropcnt;
   93 extern  u_int   natm_sodropbytes;       /* account of droppage */
   94 extern  u_int   natm_sookcnt;
   95 extern  u_int   natm_sookbytes;         /* account of ok */
   96 #endif
   97 
   98 /* locking macros */
   99 #define NATM_LOCK_INIT()        mtx_init(&natm_mtx, "natm_mtx", NULL, MTX_DEF)
  100 #define NATM_LOCK()             mtx_lock(&natm_mtx)
  101 #define NATM_UNLOCK()           mtx_unlock(&natm_mtx)
  102 #define NATM_LOCK_ASSERT()      mtx_assert(&natm_mtx, MA_OWNED)
  103 
  104 /* external functions */
  105 
  106 /* natm_pcb.c */
  107 struct  natmpcb *npcb_alloc(int);
  108 void    npcb_free(struct natmpcb *, int);
  109 struct  natmpcb *npcb_add(struct natmpcb *, struct ifnet *, uint16_t, uint8_t);
  110 
  111 /* natm.c */
  112 extern struct pr_usrreqs natm_usrreqs;
  113 
  114 #ifdef SYSCTL_HANDLER_ARGS
  115 int     natm0_sysctl(SYSCTL_HANDLER_ARGS);
  116 int     natm5_sysctl(SYSCTL_HANDLER_ARGS);
  117 #endif
  118 
  119 void    natmintr(struct mbuf *);
  120 
  121 #endif

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