253 lines
4.5 KiB
C
253 lines
4.5 KiB
C
/*
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*
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* ===================================
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* HARP | Host ATM Research Platform
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* ===================================
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*
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*
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* This Host ATM Research Platform ("HARP") file (the "Software") is
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* made available by Network Computing Services, Inc. ("NetworkCS")
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* "AS IS". NetworkCS does not provide maintenance, improvements or
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* support of any kind.
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*
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* NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
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* INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
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* SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
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* In no event shall NetworkCS be responsible for any damages, including
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* but not limited to consequential damages, arising from or relating to
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* any use of the Software or related support.
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*
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* Copyright 1994-1998 Network Computing Services, Inc.
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*
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* Copies of this Software may be made, however, the above copyright
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* notice must be reproduced on all copies.
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*
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* @(#) $Id: uniip.c,v 1.2 1998/10/31 20:07:00 phk Exp $
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*
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*/
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/*
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* ATM Forum UNI Support
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* ---------------------
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*
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* UNI IP interface module
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*
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*/
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#include <netatm/kern_include.h>
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#include <netatm/ipatm/ipatm_var.h>
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#include <netatm/ipatm/ipatm_serv.h>
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#include <netatm/uni/uniip_var.h>
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#ifndef lint
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__RCSID("@(#) $Id: uniip.c,v 1.2 1998/10/31 20:07:00 phk Exp $");
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#endif
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/*
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* Local functions
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*/
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static int uniip_ipact __P((struct ip_nif *));
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static int uniip_ipdact __P((struct ip_nif *));
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/*
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* Global variables
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*/
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struct uniip *uniip_head = NULL;
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struct ip_serv uniip_ipserv = {
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uniip_ipact,
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uniip_ipdact,
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uniarp_ioctl,
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uniarp_pvcopen,
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uniarp_svcout,
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uniarp_svcin,
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uniarp_svcactive,
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uniarp_vcclose,
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NULL,
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{ { ATM_AAL5, ATM_ENC_LLC} },
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};
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/*
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* Local variables
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*/
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static struct sp_info uniip_pool = {
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"uni ip pool", /* si_name */
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sizeof(struct uniip), /* si_blksiz */
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2, /* si_blkcnt */
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100 /* si_maxallow */
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};
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/*
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* Process module loading notification
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*
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* Called whenever the uni module is initializing.
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*
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* Arguments:
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* none
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*
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* Returns:
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* 0 initialization successful
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* errno initialization failed - reason indicated
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*
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*/
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int
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uniip_start()
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{
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int err;
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/*
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* Tell arp to initialize stuff
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*/
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err = uniarp_start();
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return (err);
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}
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/*
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* Process module unloading notification
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*
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* Called whenever the uni module is about to be unloaded. All signalling
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* instances will have been previously detached. All uniip resources
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* must be freed now.
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*
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* Arguments:
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* none
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*
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* Returns:
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* 0 shutdown was successful
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* errno shutdown failed - reason indicated
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*
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*/
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int
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uniip_stop()
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{
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/*
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* All IP interfaces should be gone
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*/
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if (uniip_head)
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return (EBUSY);
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/*
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* Tell arp to stop
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*/
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uniarp_stop();
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/*
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* Free our storage pools
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*/
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atm_release_pool(&uniip_pool);
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return (0);
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}
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/*
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* Process IP Network Interface Activation
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*
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* Called whenever an IP network interface becomes active.
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*
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* Called at splnet.
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*
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* Arguments:
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* inp pointer to IP network interface
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*
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* Returns:
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* 0 command successful
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* errno command failed - reason indicated
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*
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*/
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static int
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uniip_ipact(inp)
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struct ip_nif *inp;
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{
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struct uniip *uip;
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/*
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* Make sure we don't already have this interface
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*/
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for (uip = uniip_head; uip; uip = uip->uip_next) {
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if (uip->uip_ipnif == inp)
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return (EEXIST);
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}
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/*
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* Get a new interface control block
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*/
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uip = (struct uniip *)atm_allocate(&uniip_pool);
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if (uip == NULL)
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return (ENOMEM);
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/*
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* Initialize and link up
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*/
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uip->uip_ipnif = inp;
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LINK2TAIL(uip, struct uniip, uniip_head, uip_next);
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/*
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* Link from IP world
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*/
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inp->inf_isintf = (caddr_t)uip;
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/*
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* Tell arp about new interface
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*/
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uniarp_ipact(uip);
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return (0);
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}
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/*
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* Process IP Network Interface Deactivation
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*
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* Called whenever an IP network interface becomes inactive.
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*
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* Called at splnet.
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*
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* Arguments:
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* inp pointer to IP network interface
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*
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* Returns:
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* 0 command successful
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* errno command failed - reason indicated
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*
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*/
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static int
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uniip_ipdact(inp)
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struct ip_nif *inp;
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{
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struct uniip *uip;
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/*
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* Get the appropriate IP interface block
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*/
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uip = (struct uniip *)inp->inf_isintf;
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if (uip == NULL)
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return (ENXIO);
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/*
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* Let arp know about this
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*/
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uniarp_ipdact(uip);
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/*
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* Free interface info
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*/
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UNLINK(uip, struct uniip, uniip_head, uip_next);
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if (uip->uip_prefix != NULL)
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KM_FREE(uip->uip_prefix,
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uip->uip_nprefix * sizeof(struct uniarp_prf), M_DEVBUF);
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atm_free((caddr_t)uip);
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return (0);
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}
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