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File: [cvs.NetBSD.org] / src / sys / netnatm / Attic / natm_pcb.c (download)

Revision 1.9, Sun Dec 11 12:25:16 2005 UTC (18 years, 3 months ago) by christos
Branch: MAIN
CVS Tags: yamt-x86pmap-base4, yamt-x86pmap-base3, yamt-x86pmap-base2, yamt-x86pmap-base, yamt-x86pmap, yamt-uio_vmspace-base5, yamt-uio_vmspace, yamt-splraiseipl-base5, yamt-splraiseipl-base4, yamt-splraiseipl-base3, yamt-splraiseipl-base2, yamt-splraiseipl-base, yamt-splraiseipl, yamt-pf42-baseX, yamt-pf42-base4, yamt-pf42-base3, yamt-pf42-base2, yamt-pf42-base, yamt-pf42, yamt-pdpolicy-base9, yamt-pdpolicy-base8, yamt-pdpolicy-base7, yamt-pdpolicy-base6, yamt-pdpolicy-base5, yamt-pdpolicy-base4, yamt-pdpolicy-base3, yamt-pdpolicy-base2, yamt-pdpolicy-base, yamt-pdpolicy, yamt-nfs-mp-base2, yamt-nfs-mp-base, yamt-lazymbuf-base15, yamt-lazymbuf-base14, yamt-kmem-base3, yamt-kmem-base2, yamt-kmem-base, yamt-kmem, yamt-idlelwp-base8, yamt-idlelwp, wrstuden-revivesa-base-4, wrstuden-revivesa-base-3, wrstuden-revivesa-base-2, wrstuden-revivesa-base-1, wrstuden-revivesa-base, wrstuden-revivesa, wrstuden-fixsa-newbase, wrstuden-fixsa-base-1, wrstuden-fixsa-base, wrstuden-fixsa, vmlocking2-base3, vmlocking2-base2, vmlocking2-base1, vmlocking2, vmlocking-nbase, vmlocking-base, vmlocking, thorpej-atomic-base, thorpej-atomic, simonb-wapbl-nbase, simonb-wapbl-base, simonb-wapbl, simonb-timecounters-base, simonb-timecounters, simonb-timcounters-final, rpaulo-netinet-merge-pcb-base, rpaulo-netinet-merge-pcb, reinoud-bufcleanup-nbase, reinoud-bufcleanup-base, reinoud-bufcleanup, post-newlock2-merge, peter-altq-base, peter-altq, nick-net80211-sync-base, nick-net80211-sync, nick-csl-alignment-base5, nick-csl-alignment-base, nick-csl-alignment, newlock2-nbase, newlock2-base, newlock2, netbsd-5-base, netbsd-5-2-RELEASE, netbsd-5-2-RC1, netbsd-5-2-3-RELEASE, netbsd-5-2-2-RELEASE, netbsd-5-2-1-RELEASE, netbsd-5-2, netbsd-5-1-RELEASE, netbsd-5-1-RC4, netbsd-5-1-RC3, netbsd-5-1-RC2, netbsd-5-1-RC1, netbsd-5-1-5-RELEASE, netbsd-5-1-4-RELEASE, netbsd-5-1-3-RELEASE, netbsd-5-1-2-RELEASE, netbsd-5-1-1-RELEASE, netbsd-5-1, netbsd-5-0-RELEASE, netbsd-5-0-RC4, netbsd-5-0-RC3, netbsd-5-0-RC2, netbsd-5-0-RC1, netbsd-5-0-2-RELEASE, netbsd-5-0-1-RELEASE, netbsd-5-0, netbsd-5, netbsd-4-base, netbsd-4-0-RELEASE, netbsd-4-0-RC5, netbsd-4-0-RC4, netbsd-4-0-RC3, netbsd-4-0-RC2, netbsd-4-0-RC1, netbsd-4-0-1-RELEASE, netbsd-4-0, netbsd-4, mjf-ufs-trans-base, mjf-ufs-trans, mjf-devfs-base, mjf-devfs, matt-nb5-pq3-base, matt-nb5-pq3, matt-nb5-mips64-u2-k2-k4-k7-k8-k9, matt-nb5-mips64-u1-k1-k5, matt-nb5-mips64-premerge-20101231, matt-nb5-mips64-premerge-20091211, matt-nb5-mips64-k15, matt-nb5-mips64, matt-nb4-mips64-k7-u2a-k9b, matt-nb4-arm-base, matt-nb4-arm, matt-mips64-base2, matt-mips64-base, matt-mips64, matt-armv6-prevmlocking, matt-armv6-nbase, matt-armv6-base, matt-armv6, keiichi-mipv6-nbase, keiichi-mipv6-base, keiichi-mipv6, jmcneill-pm-base, jmcneill-pm, jmcneill-base, hpcarm-cleanup-nbase, hpcarm-cleanup-base, hpcarm-cleanup, haad-nbase2, haad-dm-base2, haad-dm-base1, haad-dm-base, haad-dm, gdamore-uart-base, gdamore-uart, elad-kernelauth-base, elad-kernelauth, cube-autoconf-base, cube-autoconf, chap-midi-nbase, chap-midi-base, chap-midi, bouyer-xeni386-nbase, bouyer-xeni386-merge1, bouyer-xeni386-base, bouyer-xeni386, bouyer-xenamd64-base2, bouyer-xenamd64-base, bouyer-xenamd64, ad-socklock-base1, ad-audiomp2-base, ad-audiomp2, ad-audiomp-base, ad-audiomp, abandoned-netbsd-4-base, abandoned-netbsd-4
Branch point for: yamt-nfs-mp, nick-hppapmap, mjf-devfs2
Changes since 1.8: +2 -2 lines

merge ktrace-lwp.

/*	$NetBSD: natm_pcb.c,v 1.9 2005/12/11 12:25:16 christos Exp $	*/

/*
 *
 * 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.
 */

/*
 * atm_pcb.c: manage atm protocol control blocks and keep IP and NATM
 * from trying to use each other's VCs.
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: natm_pcb.c,v 1.9 2005/12/11 12:25:16 christos Exp $");

#include "opt_ddb.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/queue.h>
#include <sys/socket.h>
#include <sys/protosw.h>
#include <sys/domain.h>
#include <sys/mbuf.h>
#include <sys/malloc.h>

#include <net/if.h>
#include <net/radix.h>
#include <net/route.h>

#include <netinet/in.h>

#include <netnatm/natm.h>

/*
 * npcb_alloc: allocate a npcb [in the free state]
 */

struct natmpcb *npcb_alloc(wait)

int wait;

{
  struct natmpcb *npcb;

  MALLOC(npcb, struct natmpcb *, sizeof(*npcb), M_PCB, wait);

#ifdef DIAGNOSTIC
  if (wait == M_WAITOK && npcb == NULL) panic("npcb_alloc: malloc didn't wait");
#endif

  if (npcb) {
    bzero(npcb, sizeof(*npcb));
    npcb->npcb_flags = NPCB_FREE;
  }
  return(npcb);
}


/*
 * npcb_free: free a npcb
 */

void npcb_free(npcb, op)

struct natmpcb *npcb;
int op;

{
  int s = splnet();

  if ((npcb->npcb_flags & NPCB_FREE) == 0) {
    LIST_REMOVE(npcb, pcblist);
    npcb->npcb_flags = NPCB_FREE;
  }
  if (op == NPCB_DESTROY) {
    if (npcb->npcb_inq) {
      npcb->npcb_flags = NPCB_DRAIN;	/* flag for distruction */
    } else {
      FREE(npcb, M_PCB);		/* kill it! */
    }
  }

  splx(s);
}


/*
 * npcb_add: add or remove npcb from main list
 *   returns npcb if ok
 */

struct natmpcb *npcb_add(npcb, ifp, vci, vpi)

struct natmpcb *npcb;
struct ifnet *ifp;
u_int16_t vci;
u_int8_t vpi;

{
  struct natmpcb *cpcb = NULL;		/* current pcb */
  int s = splnet();


  /*
   * lookup required
   */

  for (cpcb = natm_pcbs.lh_first ; cpcb != NULL ;
					cpcb = cpcb->pcblist.le_next) {
    if (ifp == cpcb->npcb_ifp && vci == cpcb->npcb_vci && vpi == cpcb->npcb_vpi)
      break;
  }

  /*
   * add & something already there?
   */

  if (cpcb) {
    cpcb = NULL;
    goto done;					/* fail */
  }

  /*
   * need to allocate a pcb?
   */

  if (npcb == NULL) {
    cpcb = npcb_alloc(M_NOWAIT);	/* could be called from lower half */
    if (cpcb == NULL)
      goto done;			/* fail */
  } else {
    cpcb = npcb;
  }

  cpcb->npcb_ifp = ifp;
  cpcb->ipaddr.s_addr = 0;
  cpcb->npcb_vci = vci;
  cpcb->npcb_vpi = vpi;
  cpcb->npcb_flags = NPCB_CONNECTED;

  LIST_INSERT_HEAD(&natm_pcbs, cpcb, pcblist);

done:
  splx(s);
  return(cpcb);
}



#ifdef DDB

int npcb_dump __P((void));

int npcb_dump()

{
  struct natmpcb *cpcb;

  printf("npcb dump:\n");
  for (cpcb = natm_pcbs.lh_first ; cpcb != NULL ;
					cpcb = cpcb->pcblist.le_next) {
    printf("if=%s, vci=%d, vpi=%d, IP=0x%x, sock=%p, flags=0x%x, inq=%d\n",
	cpcb->npcb_ifp->if_xname, cpcb->npcb_vci, cpcb->npcb_vpi,
	cpcb->ipaddr.s_addr, cpcb->npcb_socket,
	cpcb->npcb_flags, cpcb->npcb_inq);
  }
  printf("done\n");
  return(0);
}

#endif