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 /*-
    2  * Copyright (c) 1996 Charles D. Cranor and Washington University.
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 3. All advertising materials mentioning features or use of this software
   14  *    must display the following acknowledgement:
   15  *      This product includes software developed by Charles D. Cranor and
   16  *      Washington University.
   17  * 4. The name of the author may not be used to endorse or promote products
   18  *    derived from this software without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   30  *
   31  * $NetBSD: natm_proto.c,v 1.3 1996/09/18 00:56:41 chuck Exp $
   32  */
   33 
   34 /*
   35  * protocol layer for access to native mode ATM
   36  */
   37 
   38 #include <sys/cdefs.h>
   39 __FBSDID("$FreeBSD: stable/8/sys/netnatm/natm_proto.c 199583 2009-11-20 15:27:52Z jhb $");
   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 static  void natm_init(void);
   56 
   57 static struct domain natmdomain;
   58 
   59 static struct protosw natmsw[] = {
   60 {
   61         .pr_type =              SOCK_STREAM,
   62         .pr_domain =            &natmdomain,
   63         .pr_protocol =          PROTO_NATMAAL5,
   64         .pr_flags =             PR_CONNREQUIRED,
   65         .pr_usrreqs =           &natm_usrreqs
   66 },
   67 {
   68         .pr_type =              SOCK_DGRAM,
   69         .pr_domain =            &natmdomain,
   70         .pr_protocol =          PROTO_NATMAAL5,
   71         .pr_flags =             PR_CONNREQUIRED|PR_ATOMIC,
   72         .pr_usrreqs =           &natm_usrreqs
   73 },
   74 {
   75         .pr_type =              SOCK_STREAM,
   76         .pr_domain =            &natmdomain,
   77         .pr_protocol =          PROTO_NATMAAL0,
   78         .pr_flags =             PR_CONNREQUIRED,
   79         .pr_usrreqs =           &natm_usrreqs
   80 },
   81 };
   82 
   83 static struct domain natmdomain = {
   84         .dom_family =           AF_NATM,
   85         .dom_name =             "natm",
   86         .dom_init =             natm_init,
   87         .dom_protosw =          natmsw,
   88         .dom_protoswNPROTOSW =  &natmsw[sizeof(natmsw)/sizeof(natmsw[0])],
   89 };
   90 
   91 static struct netisr_handler natm_nh = {
   92         .nh_name = "natm",
   93         .nh_handler = natmintr,
   94         .nh_proto = NETISR_NATM,
   95         .nh_qlimit = 1000,
   96         .nh_policy = NETISR_POLICY_SOURCE,
   97 };
   98 
   99 #ifdef NATM_STAT
  100 u_int natm_sodropcnt;           /* # mbufs dropped due to full sb */
  101 u_int natm_sodropbytes;         /* # of bytes dropped */
  102 u_int natm_sookcnt;             /* # mbufs ok */
  103 u_int natm_sookbytes;           /* # of bytes ok */
  104 #endif
  105 
  106 static void
  107 natm_init(void)
  108 {
  109         LIST_INIT(&natm_pcbs);
  110         NATM_LOCK_INIT();
  111         netisr_register(&natm_nh);
  112 }
  113 
  114 DOMAIN_SET(natm);

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