815 lines
14 KiB
C
815 lines
14 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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* @(#) $FreeBSD$
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*
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*/
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/*
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* IP Over ATM Support
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* -------------------
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*
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* Support for running as a loadable kernel module
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*
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*/
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#ifndef ATM_IP_MODULE
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#include "opt_atm.h"
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#endif
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/systm.h>
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#include <sys/errno.h>
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#include <sys/time.h>
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#include <sys/kernel.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/syslog.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <netinet/in_var.h>
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#include <netatm/port.h>
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#include <netatm/queue.h>
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#include <netatm/atm.h>
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#include <netatm/atm_sys.h>
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#include <netatm/atm_sap.h>
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#include <netatm/atm_cm.h>
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#include <netatm/atm_if.h>
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#include <netatm/atm_stack.h>
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#include <netatm/atm_pcb.h>
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#include <netatm/atm_var.h>
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#include <netatm/ipatm/ipatm.h>
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#include <netatm/ipatm/ipatm_var.h>
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#ifndef lint
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__RCSID("@(#) $FreeBSD$");
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#endif
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/*
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* Global variables
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*/
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int ipatm_vccnt = 0;
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int ipatm_vcidle = IPATM_VCIDLE;
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int ipatm_print = 0;
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u_long last_map_ipdst = 0;
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struct ipvcc* last_map_ipvcc = NULL;
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struct ip_nif *ipatm_nif_head = NULL;
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struct ipatm_stat ipatm_stat = {0};
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struct atm_time ipatm_itimer = {0, 0}; /* VCC idle timer */
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Atm_endpoint ipatm_endpt = {
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NULL,
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ENDPT_IP,
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ipatm_ioctl,
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ipatm_getname,
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ipatm_connected,
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ipatm_cleared,
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ipatm_incoming,
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NULL,
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NULL,
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NULL,
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ipatm_cpcs_data,
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NULL,
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NULL,
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NULL,
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NULL
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};
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struct sp_info ipatm_vcpool = {
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"ipatm vcc pool", /* si_name */
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sizeof(struct ipvcc), /* si_blksiz */
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10, /* si_blkcnt */
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100 /* si_maxallow */
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};
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struct sp_info ipatm_nifpool = {
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"ipatm nif pool", /* si_name */
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sizeof(struct ip_nif), /* si_blksiz */
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5, /* si_blkcnt */
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52 /* si_maxallow */
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};
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/*
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* Local functions
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*/
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static int ipatm_start __P((void));
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static int ipatm_stop __P((void));
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/*
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* Local variables
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*/
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static struct atm_ncm ipatm_ncm = {
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NULL,
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AF_INET,
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ipatm_ifoutput,
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ipatm_nifstat
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};
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static struct ipatm_listener {
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Atm_attributes attr;
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Atm_connection *conn;
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} ipatm_listeners[] = {
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{
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{ NULL, /* nif */
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CMAPI_CPCS, /* api */
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0, /* api_init */
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0, /* headin */
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0, /* headout */
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{ /* aal */
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T_ATM_PRESENT,
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ATM_AAL5
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},
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{ /* traffic */
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T_ATM_PRESENT,
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{
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{
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T_ATM_ABSENT,
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0,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_NO
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},
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{
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T_ATM_ABSENT,
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0,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_NO
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},
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T_YES
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},
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},
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{ /* bearer */
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T_ATM_ANY
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},
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{ /* bhli */
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T_ATM_ABSENT
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},
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{ /* blli */
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T_ATM_PRESENT,
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T_ATM_ABSENT,
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{
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{
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T_ATM_SIMPLE_ID,
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},
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{
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T_ATM_ABSENT
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}
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}
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},
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{ /* llc */
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T_ATM_PRESENT,
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{
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T_ATM_LLC_SHARING,
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IPATM_LLC_LEN,
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IPATM_LLC_HDR
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}
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},
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{ /* called */
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T_ATM_ANY
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},
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{ /* calling */
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T_ATM_ANY
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},
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{ /* qos */
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T_ATM_PRESENT,
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{
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T_ATM_NETWORK_CODING,
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{
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T_ATM_QOS_CLASS_0,
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},
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{
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T_ATM_QOS_CLASS_0
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}
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}
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},
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{ /* transit */
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T_ATM_ANY
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},
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{ /* cause */
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T_ATM_ABSENT
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},
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},
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NULL
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},
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{
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{ NULL, /* nif */
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CMAPI_CPCS, /* api */
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0, /* api_init */
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0, /* headin */
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0, /* headout */
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{ /* aal */
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T_ATM_PRESENT,
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ATM_AAL5
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},
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{ /* traffic */
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T_ATM_PRESENT,
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{
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{
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T_ATM_ABSENT,
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0,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_NO
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},
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{
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T_ATM_ABSENT,
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0,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_NO
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},
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T_YES
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},
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},
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{ /* bearer */
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T_ATM_ANY
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},
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{ /* bhli */
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T_ATM_ABSENT
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},
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{ /* blli */
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T_ATM_ABSENT,
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T_ATM_ABSENT
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},
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{ /* llc */
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T_ATM_ABSENT
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},
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{ /* called */
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T_ATM_ANY
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},
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{ /* calling */
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T_ATM_ANY
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},
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{ /* qos */
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T_ATM_PRESENT,
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{
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T_ATM_NETWORK_CODING,
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{
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T_ATM_QOS_CLASS_0,
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},
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{
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T_ATM_QOS_CLASS_0
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}
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}
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},
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{ /* transit */
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T_ATM_ANY
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},
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{ /* cause */
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T_ATM_ABSENT
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},
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},
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NULL
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},
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{
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{ NULL, /* nif */
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CMAPI_CPCS, /* api */
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0, /* api_init */
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0, /* headin */
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0, /* headout */
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{ /* aal */
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T_ATM_PRESENT,
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ATM_AAL3_4
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},
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{ /* traffic */
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T_ATM_PRESENT,
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{
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{
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T_ATM_ABSENT,
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0,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_NO
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},
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{
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T_ATM_ABSENT,
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0,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_NO
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},
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T_YES
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},
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},
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{ /* bearer */
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T_ATM_ANY
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},
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{ /* bhli */
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T_ATM_ABSENT
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},
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{ /* blli */
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T_ATM_ABSENT,
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T_ATM_ABSENT
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},
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{ /* llc */
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T_ATM_ABSENT
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},
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{ /* called */
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T_ATM_ANY
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},
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{ /* calling */
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T_ATM_ANY
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},
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{ /* qos */
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T_ATM_PRESENT,
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{
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T_ATM_NETWORK_CODING,
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{
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T_ATM_QOS_CLASS_0,
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},
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{
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T_ATM_QOS_CLASS_0
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}
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}
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},
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{ /* transit */
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T_ATM_ANY
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},
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{ /* cause */
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T_ATM_ABSENT
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},
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},
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NULL
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},
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};
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static struct t_atm_cause ipatm_cause = {
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T_ATM_ITU_CODING,
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T_ATM_LOC_USER,
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T_ATM_CAUSE_UNSPECIFIED_NORMAL,
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{0, 0, 0, 0}
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};
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/*
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* Initialize ipatm processing
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*
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* This will be called during module loading. We'll just register
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* ourselves and wait for the packets to start flying.
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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 startup was successful
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* errno startup failed - reason indicated
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*
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*/
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static int
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ipatm_start()
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{
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struct atm_pif *pip;
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struct atm_nif *nip;
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int err, s, i;
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/*
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* Verify software version
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*/
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if (atm_version != ATM_VERSION) {
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log(LOG_ERR, "version mismatch: ipatm=%d.%d kernel=%d.%d\n",
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ATM_VERS_MAJ(ATM_VERSION), ATM_VERS_MIN(ATM_VERSION),
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ATM_VERS_MAJ(atm_version), ATM_VERS_MIN(atm_version));
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return (EINVAL);
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}
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/*
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* Register ourselves as a network convergence module
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*/
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err = atm_netconv_register(&ipatm_ncm);
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if (err)
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goto done;
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/*
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* Register ourselves as an ATM endpoint
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*/
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err = atm_endpoint_register(&ipatm_endpt);
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if (err)
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goto done;
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/*
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* Get current system configuration
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*/
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s = splnet();
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for (pip = atm_interface_head; pip; pip = pip->pif_next) {
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/*
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* Process each network interface
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*/
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for (nip = pip->pif_nif; nip; nip = nip->nif_pnext) {
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struct ifnet *ifp = (struct ifnet *)nip;
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struct in_ifaddr *ia;
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/*
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* Attach interface
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*/
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err = ipatm_nifstat(NCM_ATTACH, nip, 0);
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if (err) {
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(void) splx(s);
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goto done;
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}
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/*
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* If IP address has been set, register it
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*/
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TAILQ_FOREACH(ia, &in_ifaddrhead, ia_link) {
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if (ia->ia_ifp == ifp)
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break;
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}
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if (ia) {
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err = ipatm_nifstat(NCM_SETADDR, nip, (int)ia);
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if (err) {
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(void) splx(s);
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goto done;
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}
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}
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}
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}
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(void) splx(s);
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/*
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* Fill in union fields
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*/
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ipatm_aal5llc.aal.v.aal5.forward_max_SDU_size =
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ATM_NIF_MTU + IPATM_LLC_LEN;
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ipatm_aal5llc.aal.v.aal5.backward_max_SDU_size =
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ATM_NIF_MTU + IPATM_LLC_LEN;
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ipatm_aal5llc.aal.v.aal5.SSCS_type = T_ATM_NULL;
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ipatm_aal5llc.blli.v.layer_2_protocol.ID.simple_ID = T_ATM_BLLI2_I8802;
|
|
|
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ipatm_aal5null.aal.v.aal5.forward_max_SDU_size = ATM_NIF_MTU;
|
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ipatm_aal5null.aal.v.aal5.backward_max_SDU_size = ATM_NIF_MTU;
|
|
ipatm_aal5null.aal.v.aal5.SSCS_type = T_ATM_NULL;
|
|
|
|
ipatm_aal4null.aal.v.aal4.forward_max_SDU_size = ATM_NIF_MTU;
|
|
ipatm_aal4null.aal.v.aal4.backward_max_SDU_size = ATM_NIF_MTU;
|
|
ipatm_aal4null.aal.v.aal4.SSCS_type = T_ATM_NULL;
|
|
ipatm_aal4null.aal.v.aal4.mid_low = 0;
|
|
ipatm_aal4null.aal.v.aal4.mid_high = 1023;
|
|
|
|
/*
|
|
* Listen for incoming calls
|
|
*/
|
|
for (i = 0;
|
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i < (sizeof(ipatm_listeners) / sizeof(struct ipatm_listener));
|
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i++) {
|
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struct attr_aal *aalp = &ipatm_listeners[i].attr.aal;
|
|
int maxsdu = ATM_NIF_MTU;
|
|
|
|
/*
|
|
* Fill in union fields
|
|
*/
|
|
if (ipatm_listeners[i].attr.blli.tag_l2 == T_ATM_PRESENT) {
|
|
struct t_atm_blli *bp = &ipatm_listeners[i].attr.blli.v;
|
|
|
|
bp->layer_2_protocol.ID.simple_ID = T_ATM_BLLI2_I8802;
|
|
maxsdu += IPATM_LLC_LEN;
|
|
}
|
|
if (aalp->type == ATM_AAL5) {
|
|
aalp->v.aal5.forward_max_SDU_size = maxsdu;
|
|
aalp->v.aal5.backward_max_SDU_size = maxsdu;
|
|
aalp->v.aal5.SSCS_type = T_ATM_NULL;
|
|
} else {
|
|
aalp->v.aal4.forward_max_SDU_size = maxsdu;
|
|
aalp->v.aal4.backward_max_SDU_size = maxsdu;
|
|
aalp->v.aal4.SSCS_type = T_ATM_NULL;
|
|
aalp->v.aal4.mid_low = 0;
|
|
aalp->v.aal4.mid_high = 1023;
|
|
}
|
|
|
|
/*
|
|
* Now start listening
|
|
*/
|
|
if ((err = atm_cm_listen(&ipatm_endpt, (void *)i,
|
|
&ipatm_listeners[i].attr,
|
|
&ipatm_listeners[i].conn)) != 0)
|
|
goto done;
|
|
}
|
|
|
|
/*
|
|
* Start background VCC idle timer
|
|
*/
|
|
atm_timeout(&ipatm_itimer, IPATM_IDLE_TIME, ipatm_itimeout);
|
|
|
|
done:
|
|
return (err);
|
|
}
|
|
|
|
|
|
/*
|
|
* Halt ipatm processing
|
|
*
|
|
* This will be called just prior to unloading the module from
|
|
* memory. All IP VCCs must be terminated before the protocol can
|
|
* be shutdown.
|
|
*
|
|
* Arguments:
|
|
* none
|
|
*
|
|
* Returns:
|
|
* 0 shutdown was successful
|
|
* errno shutdown failed - reason indicated
|
|
*
|
|
*/
|
|
static int
|
|
ipatm_stop()
|
|
{
|
|
struct ip_nif *inp;
|
|
int err = 0, i;
|
|
int s = splnet();
|
|
|
|
/*
|
|
* Any VCCs still open??
|
|
*/
|
|
if (ipatm_vccnt) {
|
|
|
|
/* Yes, can't stop now */
|
|
err = EBUSY;
|
|
goto done;
|
|
}
|
|
|
|
/*
|
|
* Kill VCC idle timer
|
|
*/
|
|
(void) atm_untimeout(&ipatm_itimer);
|
|
|
|
/*
|
|
* Stop listening for incoming calls
|
|
*/
|
|
for (i = 0;
|
|
i < (sizeof(ipatm_listeners) / sizeof(struct ipatm_listener));
|
|
i++) {
|
|
if (ipatm_listeners[i].conn != NULL) {
|
|
(void) atm_cm_release(ipatm_listeners[i].conn,
|
|
&ipatm_cause);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Detach all our interfaces
|
|
*/
|
|
while ((inp = ipatm_nif_head) != NULL) {
|
|
(void) ipatm_nifstat(NCM_DETACH, inp->inf_nif, 0);
|
|
}
|
|
|
|
/*
|
|
* De-register from system
|
|
*/
|
|
(void) atm_netconv_deregister(&ipatm_ncm);
|
|
(void) atm_endpoint_deregister(&ipatm_endpt);
|
|
|
|
/*
|
|
* Free up our storage pools
|
|
*/
|
|
atm_release_pool(&ipatm_vcpool);
|
|
atm_release_pool(&ipatm_nifpool);
|
|
|
|
done:
|
|
(void) splx(s);
|
|
return (err);
|
|
}
|
|
|
|
|
|
#ifdef ATM_IP_MODULE
|
|
/*
|
|
*******************************************************************
|
|
*
|
|
* Loadable Module Support
|
|
*
|
|
*******************************************************************
|
|
*/
|
|
static int ipatm_doload __P((void));
|
|
static int ipatm_dounload __P((void));
|
|
|
|
/*
|
|
* Generic module load processing
|
|
*
|
|
* This function is called by an OS-specific function when this
|
|
* module is being loaded.
|
|
*
|
|
* Arguments:
|
|
* none
|
|
*
|
|
* Returns:
|
|
* 0 load was successful
|
|
* errno load failed - reason indicated
|
|
*
|
|
*/
|
|
static int
|
|
ipatm_doload()
|
|
{
|
|
int err = 0;
|
|
|
|
/*
|
|
* Start us up
|
|
*/
|
|
err = ipatm_start();
|
|
if (err)
|
|
/* Problems, clean up */
|
|
(void)ipatm_stop();
|
|
|
|
return (err);
|
|
}
|
|
|
|
|
|
/*
|
|
* Generic module unload processing
|
|
*
|
|
* This function is called by an OS-specific function when this
|
|
* module is being unloaded.
|
|
*
|
|
* Arguments:
|
|
* none
|
|
*
|
|
* Returns:
|
|
* 0 unload was successful
|
|
* errno unload failed - reason indicated
|
|
*
|
|
*/
|
|
static int
|
|
ipatm_dounload()
|
|
{
|
|
int err = 0;
|
|
|
|
/*
|
|
* OK, try to clean up our mess
|
|
*/
|
|
err = ipatm_stop();
|
|
|
|
return (err);
|
|
}
|
|
|
|
|
|
|
|
|
|
#include <sys/exec.h>
|
|
#include <sys/sysent.h>
|
|
#include <sys/lkm.h>
|
|
|
|
/*
|
|
* Loadable miscellaneous module description
|
|
*/
|
|
MOD_MISC(ipatm);
|
|
|
|
|
|
/*
|
|
* Loadable module support "load" entry point
|
|
*
|
|
* This is the routine called by the lkm driver whenever the
|
|
* modload(1) command is issued for this module.
|
|
*
|
|
* Arguments:
|
|
* lkmtp pointer to lkm drivers's structure
|
|
* cmd lkm command code
|
|
*
|
|
* Returns:
|
|
* 0 command was successful
|
|
* errno command failed - reason indicated
|
|
*
|
|
*/
|
|
static int
|
|
ipatm_load(lkmtp, cmd)
|
|
struct lkm_table *lkmtp;
|
|
int cmd;
|
|
{
|
|
return(ipatm_doload());
|
|
}
|
|
|
|
|
|
/*
|
|
* Loadable module support "unload" entry point
|
|
*
|
|
* This is the routine called by the lkm driver whenever the
|
|
* modunload(1) command is issued for this module.
|
|
*
|
|
* Arguments:
|
|
* lkmtp pointer to lkm drivers's structure
|
|
* cmd lkm command code
|
|
*
|
|
* Returns:
|
|
* 0 command was successful
|
|
* errno command failed - reason indicated
|
|
*
|
|
*/
|
|
static int
|
|
ipatm_unload(lkmtp, cmd)
|
|
struct lkm_table *lkmtp;
|
|
int cmd;
|
|
{
|
|
return(ipatm_dounload());
|
|
}
|
|
|
|
|
|
/*
|
|
* Loadable module support entry point
|
|
*
|
|
* This is the routine called by the lkm driver for all loadable module
|
|
* functions for this driver. This routine name must be specified
|
|
* on the modload(1) command. This routine will be called whenever the
|
|
* modload(1), modunload(1) or modstat(1) commands are issued for this
|
|
* module.
|
|
*
|
|
* Arguments:
|
|
* lkmtp pointer to lkm drivers's structure
|
|
* cmd lkm command code
|
|
* ver lkm version
|
|
*
|
|
* Returns:
|
|
* 0 command was successful
|
|
* errno command failed - reason indicated
|
|
*
|
|
*/
|
|
int
|
|
ipatm_mod(lkmtp, cmd, ver)
|
|
struct lkm_table *lkmtp;
|
|
int cmd;
|
|
int ver;
|
|
{
|
|
MOD_DISPATCH(ipatm, lkmtp, cmd, ver,
|
|
ipatm_load, ipatm_unload, lkm_nullcmd);
|
|
}
|
|
|
|
#else /* !ATM_IP_MODULE */
|
|
|
|
/*
|
|
*******************************************************************
|
|
*
|
|
* Kernel Compiled Module Support
|
|
*
|
|
*******************************************************************
|
|
*/
|
|
static void ipatm_doload __P((void *));
|
|
|
|
SYSINIT(atmipatm, SI_SUB_PROTO_END, SI_ORDER_ANY, ipatm_doload, NULL)
|
|
|
|
/*
|
|
* Kernel initialization
|
|
*
|
|
* Arguments:
|
|
* arg Not used
|
|
*
|
|
* Returns:
|
|
* none
|
|
*
|
|
*/
|
|
static void
|
|
ipatm_doload(void *arg)
|
|
{
|
|
int err = 0;
|
|
|
|
/*
|
|
* Start us up
|
|
*/
|
|
err = ipatm_start();
|
|
if (err) {
|
|
/* Problems, clean up */
|
|
(void)ipatm_stop();
|
|
|
|
log(LOG_ERR, "IP over ATM unable to initialize (%d)!!\n", err);
|
|
}
|
|
return;
|
|
}
|
|
#endif /* ATM_IP_MODULE */
|
|
|