The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/netiso/clnp_timer.c

Version: -  FREEBSD  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-2  -  FREEBSD-11-1  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-4  -  FREEBSD-10-3  -  FREEBSD-10-2  -  FREEBSD-10-1  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-3  -  FREEBSD-9-2  -  FREEBSD-9-1  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-4  -  FREEBSD-8-3  -  FREEBSD-8-2  -  FREEBSD-8-1  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-4  -  FREEBSD-7-3  -  FREEBSD-7-2  -  FREEBSD-7-1  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-4  -  FREEBSD-6-3  -  FREEBSD-6-2  -  FREEBSD-6-1  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-5  -  FREEBSD-5-4  -  FREEBSD-5-3  -  FREEBSD-5-2  -  FREEBSD-5-1  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  linux-2.6  -  linux-2.4.22  -  MK83  -  MK84  -  PLAN9  -  DFBSD  -  NETBSD  -  NETBSD5  -  NETBSD4  -  NETBSD3  -  NETBSD20  -  OPENBSD  -  xnu-517  -  xnu-792  -  xnu-792.6.70  -  xnu-1228  -  xnu-1456.1.26  -  xnu-1699.24.8  -  xnu-2050.18.24  -  OPENSOLARIS  -  minix-3-1-1 
SearchContext: -  none  -  3  -  10 

    1 /*      $NetBSD: clnp_timer.c,v 1.12 2004/04/19 05:16:45 matt Exp $     */
    2 
    3 /*-
    4  * Copyright (c) 1991, 1993
    5  *      The Regents of the University of California.  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. Neither the name of the University nor the names of its contributors
   16  *    may be used to endorse or promote products derived from this software
   17  *    without specific prior written permission.
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   29  * SUCH DAMAGE.
   30  *
   31  *      @(#)clnp_timer.c        8.1 (Berkeley) 6/10/93
   32  */
   33 
   34 /***********************************************************
   35                 Copyright IBM Corporation 1987
   36 
   37                       All Rights Reserved
   38 
   39 Permission to use, copy, modify, and distribute this software and its
   40 documentation for any purpose and without fee is hereby granted,
   41 provided that the above copyright notice appear in all copies and that
   42 both that copyright notice and this permission notice appear in
   43 supporting documentation, and that the name of IBM not be
   44 used in advertising or publicity pertaining to distribution of the
   45 software without specific, written prior permission.
   46 
   47 IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
   48 ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
   49 IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
   50 ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
   51 WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
   52 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
   53 SOFTWARE.
   54 
   55 ******************************************************************/
   56 
   57 /*
   58  * ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison
   59  */
   60 
   61 #include <sys/cdefs.h>
   62 __KERNEL_RCSID(0, "$NetBSD: clnp_timer.c,v 1.12 2004/04/19 05:16:45 matt Exp $");
   63 
   64 #include <sys/param.h>
   65 #include <sys/mbuf.h>
   66 #include <sys/domain.h>
   67 #include <sys/protosw.h>
   68 #include <sys/socket.h>
   69 #include <sys/socketvar.h>
   70 #include <sys/errno.h>
   71 
   72 #include <net/if.h>
   73 #include <net/route.h>
   74 
   75 #include <netiso/iso.h>
   76 #include <netiso/clnp.h>
   77 #include <netiso/clnp_stat.h>
   78 #include <netiso/argo_debug.h>
   79 
   80 extern struct clnp_fragl *clnp_frags;
   81 
   82 /*
   83  * FUNCTION:            clnp_freefrags
   84  *
   85  * PURPOSE:                     Free the resources associated with a fragment
   86  *
   87  * RETURNS:                     pointer to next fragment in list of fragments
   88  *
   89  * SIDE EFFECTS:
   90  *
   91  * NOTES:
   92  *                      TODO: send ER back to source
   93  */
   94 struct clnp_fragl *
   95 clnp_freefrags(
   96         struct clnp_fragl *cfh) /* fragment header to delete */
   97 {
   98         struct clnp_fragl *next = cfh->cfl_next;
   99         struct clnp_frag *cf;
  100 
  101         /* free any frags hanging around */
  102         cf = cfh->cfl_frags;
  103         while (cf != NULL) {
  104                 struct clnp_frag *cf_next = cf->cfr_next;
  105                 INCSTAT(cns_fragdropped);
  106                 m_freem(cf->cfr_data);
  107                 cf = cf_next;
  108         }
  109 
  110         /* free the copy of the header */
  111         INCSTAT(cns_fragdropped);
  112         m_freem(cfh->cfl_orighdr);
  113 
  114         if (clnp_frags == cfh) {
  115                 clnp_frags = cfh->cfl_next;
  116         } else {
  117                 struct clnp_fragl *scan;
  118 
  119                 for (scan = clnp_frags; scan != NULL; scan = scan->cfl_next) {
  120                         if (scan->cfl_next == cfh) {
  121                                 scan->cfl_next = cfh->cfl_next;
  122                                 break;
  123                         }
  124                 }
  125         }
  126 
  127         /* free the fragment header */
  128         FREE(cfh, M_FTABLE);
  129 
  130         return (next);
  131 }
  132 
  133 /*
  134  * FUNCTION:            clnp_slowtimo
  135  *
  136  * PURPOSE:                     clnp timer processing; if the ttl expires on a
  137  *                                      packet on the reassembly queue, discard it.
  138  *
  139  * RETURNS:                     none
  140  *
  141  * SIDE EFFECTS:
  142  *
  143  * NOTES:
  144  */
  145 void
  146 clnp_slowtimo(void)
  147 {
  148         struct clnp_fragl *cfh = clnp_frags;
  149         int s = splsoftnet();
  150 
  151         while (cfh != NULL) {
  152                 if (--cfh->cfl_ttl == 0) {
  153                         cfh = clnp_freefrags(cfh);
  154                         INCSTAT(cns_fragtimeout);
  155                 } else {
  156                         cfh = cfh->cfl_next;
  157                 }
  158         }
  159         splx(s);
  160 }
  161 
  162 /*
  163  * FUNCTION:            clnp_drain
  164  *
  165  * PURPOSE:                     drain off all datagram fragments
  166  *
  167  * RETURNS:                     none
  168  *
  169  * SIDE EFFECTS:
  170  *
  171  * NOTES:
  172  *      TODO: should send back ER
  173  */
  174 void
  175 clnp_drain(void)
  176 {
  177         struct clnp_fragl *cfh = clnp_frags;
  178 
  179         while (cfh != NULL)
  180                 cfh = clnp_freefrags(cfh);
  181 }

Cache object: 1bdfb1a09b0a5654a67f3c2be5c4d4a1


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.