334 lines
6.8 KiB
C
334 lines
6.8 KiB
C
/*
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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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/*
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* ATM Forum UNI 3.0/3.1 Signalling Manager
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* ----------------------------------------
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*
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* Protocol processing module.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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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/time.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 <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_vc.h>
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#include <netatm/atm_sigmgr.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/uni/unisig_var.h>
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/*
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* Process a UNISIG timeout
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*
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* Called when a previously scheduled protocol instance control block
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* timer expires. This routine passes a timeout event to the UNISIG
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* signalling manager state machine.
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*
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* Called at splnet.
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*
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* Arguments:
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* tip pointer to UNISIG timer control block
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*
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* Returns:
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* none
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*
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*/
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void
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unisig_timer(tip)
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struct atm_time *tip;
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{
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struct unisig *usp;
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/*
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* Back-off to UNISIG control block
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*/
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usp = (struct unisig *)
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((caddr_t)tip - (int)(&((struct unisig *)0)->us_time));
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ATM_DEBUG2("unisig_timer: usp=%p,state=%d\n",
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usp, usp->us_state);
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/*
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* Pass the timeout to the signalling manager state machine
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*/
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(void) unisig_sigmgr_state(usp,
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UNISIG_SIGMGR_TIMEOUT,
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(KBuffer *) 0);
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}
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/*
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* Process a UNISIG VCC timeout
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*
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* Called when a previously scheduled UNISIG VCCB timer expires.
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* Processing will based on the current VCC state.
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*
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* Called at splnet.
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*
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* Arguments:
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* tip pointer to vccb timer control block
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*
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* Returns:
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* none
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*
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*/
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void
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unisig_vctimer(tip)
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struct atm_time *tip;
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{
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struct unisig *usp;
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struct unisig_vccb *uvp;
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/*
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* Get VCCB and UNISIG control block addresses
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*/
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uvp = (struct unisig_vccb *) ((caddr_t)tip -
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(int)(&((struct vccb *)0)->vc_time));
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usp = (struct unisig *)uvp->uv_pif->pif_siginst;
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ATM_DEBUG3("unisig_vctimer: uvp=%p, sstate=%d, ustate=%d\n",
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uvp, uvp->uv_sstate, uvp->uv_ustate);
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/*
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* Hand the timeout to the VC finite state machine
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*/
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if (uvp->uv_ustate == VCCU_ABORT) {
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/*
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* If we're aborting, this is an ABORT call
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*/
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(void) unisig_vc_state(usp, uvp, UNI_VC_ABORT_CALL,
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(struct unisig_msg *) 0);
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} else {
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/*
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* If we're not aborting, it's a timeout
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*/
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(void) unisig_vc_state(usp, uvp, UNI_VC_TIMEOUT,
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(struct unisig_msg *) 0);
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}
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}
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/*
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* UNISIG SAAL Control Handler
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*
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* This is the module which receives data on the UNISIG signalling
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* channel. Processing is based on the indication received from the
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* SSCF and the protocol state.
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*
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* Arguments:
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* cmd command code
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* tok session token (pointer to UNISIG protocol control block)
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* a1 argument 1
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*
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* Returns:
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* none
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*
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*/
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void
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unisig_saal_ctl(cmd, tok, a1)
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int cmd;
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void *tok;
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void *a1;
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{
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struct unisig *usp = tok;
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ATM_DEBUG4("unisig_upper: usp=%p,state=%d,cmd=%d,a1=0x%lx,\n",
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usp, usp->us_state, cmd, (u_long)a1);
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/*
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* Process command
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*/
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switch (cmd) {
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case SSCF_UNI_ESTABLISH_IND:
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(void) unisig_sigmgr_state(usp,
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UNISIG_SIGMGR_SSCF_EST_IND,
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(KBuffer *) 0);
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break;
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case SSCF_UNI_ESTABLISH_CNF:
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(void) unisig_sigmgr_state(usp,
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UNISIG_SIGMGR_SSCF_EST_CNF,
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(KBuffer *) 0);
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break;
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case SSCF_UNI_RELEASE_IND:
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(void) unisig_sigmgr_state(usp,
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UNISIG_SIGMGR_SSCF_RLS_IND,
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(KBuffer *) 0);
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break;
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case SSCF_UNI_RELEASE_CNF:
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(void) unisig_sigmgr_state(usp,
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UNISIG_SIGMGR_SSCF_RLS_CNF,
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(KBuffer *) 0);
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break;
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default:
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log(LOG_ERR,
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"unisig: unknown SAAL cmd: usp=%p, state=%d, cmd=%d\n",
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usp, usp->us_state, cmd);
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}
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}
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/*
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* UNISIG SAAL Data Handler
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*
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* This is the module which receives data on the UNISIG signalling
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* channel. Processing is based on the protocol state.
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*
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* Arguments:
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* tok session token (pointer to UNISIG protocol control block)
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* m pointer to data
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*
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* Returns:
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* none
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*
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*/
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void
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unisig_saal_data(tok, m)
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void *tok;
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KBuffer *m;
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{
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struct unisig *usp = tok;
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ATM_DEBUG3("unisig_saal_data: usp=%p,state=%d,m=%p,\n",
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usp, usp->us_state, m);
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/*
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* Pass data to signalling manager state machine
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*/
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(void) unisig_sigmgr_state(usp,
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UNISIG_SIGMGR_SSCF_DATA_IND,
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m);
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}
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/*
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* Get Connection's Application/Owner Name
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*
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* Arguments:
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* tok UNI signalling connection token (pointer to protocol instance)
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*
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* Returns:
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* addr pointer to string containing our name
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*
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*/
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caddr_t
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unisig_getname(tok)
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void *tok;
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{
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struct unisig *usp = tok;
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if (usp->us_proto == ATM_SIG_UNI30)
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return ("UNI3.0");
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else if (usp->us_proto == ATM_SIG_UNI31)
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return ("UNI3.1");
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else if (usp->us_proto == ATM_SIG_UNI40)
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return ("UNI4.0");
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else
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return ("UNI");
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}
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/*
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* Process a VCC connection notification
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*
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* Should never be called.
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*
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* Arguments:
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* tok user's connection token (unisig protocol block)
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*
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* Returns:
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* none
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*
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*/
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void
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unisig_connected(tok)
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void *tok;
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{
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struct unisig *usp = tok;
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ATM_DEBUG2("unisig_connected: usp=%p,state=%d\n",
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usp, usp->us_state);
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/*
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* Connected routine shouldn't ever get called for a PVC
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*/
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log(LOG_ERR, "unisig: connected notification, usp=%p\n",
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usp);
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}
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/*
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* Process a VCC closed notification
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*
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* Called when UNISIG signalling channel is closed.
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*
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* Arguments:
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* tok user's connection token (unisig protocol block)
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* cp pointer to cause structure
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*
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* Returns:
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* none
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*
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*/
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void
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unisig_cleared(tok, cp)
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void *tok;
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struct t_atm_cause *cp;
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{
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struct unisig *usp = tok;
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ATM_DEBUG3("unisig_cleared: usp=%p, state=%d, cause=%d\n",
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usp, usp->us_state, cp->cause_value);
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/*
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* VCC has been closed. Notify the signalling
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* manager state machine.
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*/
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(void) unisig_sigmgr_state(usp,
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UNISIG_SIGMGR_CALL_CLEARED,
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(KBuffer *) 0);
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}
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