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_proto.c

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    1 /*      $NetBSD: natm_proto.c,v 1.3 1996/09/18 00:56:41 chuck Exp $     */
    2 /*-
    3  *
    4  * Copyright (c) 1996 Charles D. Cranor and Washington University.
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  * 3. All advertising materials mentioning features or use of this software
   16  *    must display the following acknowledgement:
   17  *      This product includes software developed by Charles D. Cranor and
   18  *      Washington University.
   19  * 4. The name of the author may not be used to endorse or promote products
   20  *    derived from this software without specific prior written permission.
   21  *
   22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   32  */
   33 
   34 /*
   35  * protocol layer for access to native mode ATM
   36  */
   37 
   38 #include <sys/cdefs.h>
   39 __FBSDID("$FreeBSD: releng/6.0/sys/netnatm/natm_proto.c 149078 2005-08-15 09:52:22Z rwatson $");
   40 
   41 #include <sys/param.h>
   42 #include <sys/systm.h>
   43 #include <sys/kernel.h>
   44 #include <sys/socket.h>
   45 #include <sys/protosw.h>
   46 #include <sys/domain.h>
   47 
   48 #include <net/if.h>
   49 #include <net/netisr.h>
   50 
   51 #include <netinet/in.h>
   52 
   53 #include <netnatm/natm.h>
   54 
   55 extern  struct domain natmdomain;
   56 
   57 static  void natm_init(void);
   58 
   59 static struct protosw natmsw[] = {
   60 { SOCK_STREAM,  &natmdomain,    PROTO_NATMAAL5, PR_CONNREQUIRED,
   61   0,    0,      0,      0,
   62   0,
   63   0,    0,      0,      0,      
   64         &natm_usrreqs
   65 },
   66 { SOCK_DGRAM,   &natmdomain,    PROTO_NATMAAL5, PR_CONNREQUIRED | PR_ATOMIC,
   67   0,    0,      0,      0,
   68   0,
   69   0,    0,      0,      0,      
   70         &natm_usrreqs
   71 },
   72 { SOCK_STREAM,  &natmdomain,    PROTO_NATMAAL0, PR_CONNREQUIRED,
   73   0,    0,      0,      0,
   74   0,
   75   0,    0,      0,      0,      
   76         &natm_usrreqs
   77 },
   78 };
   79 
   80 static struct domain natmdomain =
   81     { AF_NATM, "natm", natm_init, 0, 0, 
   82       natmsw, &natmsw[sizeof(natmsw)/sizeof(natmsw[0])], 0,
   83       0, 0, 0};
   84 
   85 static int natmqmaxlen = 1000 /* IFQ_MAXLEN */; /* max # of packets on queue */
   86 static struct ifqueue natmintrq;
   87 #ifdef NATM_STAT
   88 u_int natm_sodropcnt;           /* # mbufs dropped due to full sb */
   89 u_int natm_sodropbytes;         /* # of bytes dropped */
   90 u_int natm_sookcnt;             /* # mbufs ok */
   91 u_int natm_sookbytes;           /* # of bytes ok */
   92 #endif
   93 
   94 static void
   95 natm_init(void)
   96 {
   97         LIST_INIT(&natm_pcbs);
   98         bzero(&natmintrq, sizeof(natmintrq));
   99         natmintrq.ifq_maxlen = natmqmaxlen;
  100         NATM_LOCK_INIT();
  101         mtx_init(&natmintrq.ifq_mtx, "natm_inq", NULL, MTX_DEF);
  102         netisr_register(NETISR_NATM, natmintr, &natmintrq, NETISR_MPSAFE);
  103 }
  104 
  105 DOMAIN_SET(natm);

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