517 lines
11 KiB
C
517 lines
11 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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* ATM Forum UNI Support
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* ---------------------
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*
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* ITU-T Q.2110 - Process AA-signals (SAP_SSCOP)
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*
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*/
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#include <netatm/kern_include.h>
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#include <netatm/uni/uni.h>
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#include <netatm/uni/sscop.h>
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#include <netatm/uni/sscop_misc.h>
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#include <netatm/uni/sscop_pdu.h>
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#include <netatm/uni/sscop_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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* Local functions
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*/
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static void sscop_resreq_ready __P((struct sscop *, int, int));
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static void sscop_resrsp_inresyn __P((struct sscop *, int, int));
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static void sscop_recrsp_recovrsp __P((struct sscop *, int, int));
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static void sscop_recrsp_inrecov __P((struct sscop *, int, int));
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/*
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* Stack command state lookup tables
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*/
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/* SSCOP_INIT */
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static void (*sscop_init_tab[SOS_NUMSTATES])
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__P((struct sscop *, int, int)) = {
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sscop_init_inst, /* SOS_INST */
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NULL, /* SOS_IDLE */
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NULL, /* SOS_OUTCONN */
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NULL, /* SOS_INCONN */
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NULL, /* SOS_OUTDISC */
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NULL, /* SOS_OUTRESYN */
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NULL, /* SOS_INRESYN */
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NULL, /* SOS_OUTRECOV */
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NULL, /* SOS_RECOVRSP */
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NULL, /* SOS_INRECOV */
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NULL, /* SOS_READY */
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NULL /* SOS_TERM */
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};
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/* SSCOP_TERM */
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static void (*sscop_term_tab[SOS_NUMSTATES])
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__P((struct sscop *, int, int)) = {
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sscop_term_all, /* SOS_INST */
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sscop_term_all, /* SOS_IDLE */
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sscop_term_all, /* SOS_OUTCONN */
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sscop_term_all, /* SOS_INCONN */
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sscop_term_all, /* SOS_OUTDISC */
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sscop_term_all, /* SOS_OUTRESYN */
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sscop_term_all, /* SOS_INRESYN */
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sscop_term_all, /* SOS_OUTRECOV */
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sscop_term_all, /* SOS_RECOVRSP */
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sscop_term_all, /* SOS_INRECOV */
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sscop_term_all, /* SOS_READY */
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sscop_term_all /* SOS_TERM */
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};
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/* SSCOP_ESTABLISH_REQ */
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static void (*sscop_estreq_tab[SOS_NUMSTATES])
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__P((struct sscop *, int, int)) = {
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NULL, /* SOS_INST */
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sscop_estreq_idle, /* SOS_IDLE */
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NULL, /* SOS_OUTCONN */
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NULL, /* SOS_INCONN */
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sscop_estreq_idle, /* SOS_OUTDISC */
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NULL, /* SOS_OUTRESYN */
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NULL, /* SOS_INRESYN */
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NULL, /* SOS_OUTRECOV */
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NULL, /* SOS_RECOVRSP */
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NULL, /* SOS_INRECOV */
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NULL, /* SOS_READY */
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sscop_aa_noop_1 /* SOS_TERM */
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};
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/* SSCOP_ESTABLISH_RSP */
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static void (*sscop_estrsp_tab[SOS_NUMSTATES])
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__P((struct sscop *, int, int)) = {
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NULL, /* SOS_INST */
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NULL, /* SOS_IDLE */
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NULL, /* SOS_OUTCONN */
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sscop_estrsp_inconn, /* SOS_INCONN */
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NULL, /* SOS_OUTDISC */
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NULL, /* SOS_OUTRESYN */
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NULL, /* SOS_INRESYN */
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NULL, /* SOS_OUTRECOV */
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NULL, /* SOS_RECOVRSP */
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NULL, /* SOS_INRECOV */
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NULL, /* SOS_READY */
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sscop_aa_noop_1 /* SOS_TERM */
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};
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/* SSCOP_RELEASE_REQ */
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static void (*sscop_relreq_tab[SOS_NUMSTATES])
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__P((struct sscop *, int, int)) = {
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NULL, /* SOS_INST */
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NULL, /* SOS_IDLE */
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sscop_relreq_outconn, /* SOS_OUTCONN */
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sscop_relreq_inconn, /* SOS_INCONN */
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NULL, /* SOS_OUTDISC */
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sscop_relreq_outconn, /* SOS_OUTRESYN */
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sscop_relreq_outconn, /* SOS_INRESYN */
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sscop_relreq_ready, /* SOS_OUTRECOV */
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sscop_relreq_outconn, /* SOS_RECOVRSP */
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sscop_relreq_outconn, /* SOS_INRECOV */
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sscop_relreq_ready, /* SOS_READY */
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sscop_aa_noop_1 /* SOS_TERM */
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};
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/* SSCOP_DATA_REQ */
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static void (*sscop_datreq_tab[SOS_NUMSTATES])
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__P((struct sscop *, int, int)) = {
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NULL, /* SOS_INST */
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NULL, /* SOS_IDLE */
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NULL, /* SOS_OUTCONN */
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NULL, /* SOS_INCONN */
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NULL, /* SOS_OUTDISC */
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NULL, /* SOS_OUTRESYN */
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NULL, /* SOS_INRESYN */
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sscop_aa_noop_1, /* SOS_OUTRECOV */
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NULL, /* SOS_RECOVRSP */
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NULL, /* SOS_INRECOV */
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sscop_datreq_ready, /* SOS_READY */
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sscop_aa_noop_1 /* SOS_TERM */
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};
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/* SSCOP_RESYNC_REQ */
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static void (*sscop_resreq_tab[SOS_NUMSTATES])
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__P((struct sscop *, int, int)) = {
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NULL, /* SOS_INST */
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NULL, /* SOS_IDLE */
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NULL, /* SOS_OUTCONN */
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NULL, /* SOS_INCONN */
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NULL, /* SOS_OUTDISC */
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NULL, /* SOS_OUTRESYN */
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NULL, /* SOS_INRESYN */
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sscop_resreq_ready, /* SOS_OUTRECOV */
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sscop_resreq_ready, /* SOS_RECOVRSP */
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sscop_resreq_ready, /* SOS_INRECOV */
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sscop_resreq_ready, /* SOS_READY */
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sscop_aa_noop_1 /* SOS_TERM */
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};
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/* SSCOP_RESYNC_RSP */
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static void (*sscop_resrsp_tab[SOS_NUMSTATES])
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__P((struct sscop *, int, int)) = {
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NULL, /* SOS_INST */
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NULL, /* SOS_IDLE */
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NULL, /* SOS_OUTCONN */
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NULL, /* SOS_INCONN */
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NULL, /* SOS_OUTDISC */
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NULL, /* SOS_OUTRESYN */
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sscop_resrsp_inresyn, /* SOS_INRESYN */
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NULL, /* SOS_OUTRECOV */
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NULL, /* SOS_RECOVRSP */
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NULL, /* SOS_INRECOV */
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NULL, /* SOS_READY */
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sscop_aa_noop_0 /* SOS_TERM */
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};
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/* SSCOP_RECOVER_RSP */
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static void (*sscop_recrsp_tab[SOS_NUMSTATES])
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__P((struct sscop *, int, int)) = {
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NULL, /* SOS_INST */
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NULL, /* SOS_IDLE */
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NULL, /* SOS_OUTCONN */
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NULL, /* SOS_INCONN */
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NULL, /* SOS_OUTDISC */
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NULL, /* SOS_OUTRESYN */
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NULL, /* SOS_INRESYN */
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NULL, /* SOS_OUTRECOV */
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sscop_recrsp_recovrsp, /* SOS_RECOVRSP */
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sscop_recrsp_inrecov, /* SOS_INRECOV */
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NULL, /* SOS_READY */
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sscop_aa_noop_0 /* SOS_TERM */
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};
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/* SSCOP_UNITDATA_REQ */
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static void (*sscop_udtreq_tab[SOS_NUMSTATES])
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__P((struct sscop *, int, int)) = {
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NULL, /* SOS_INST */
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sscop_udtreq_all, /* SOS_IDLE */
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sscop_udtreq_all, /* SOS_OUTCONN */
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sscop_udtreq_all, /* SOS_INCONN */
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sscop_udtreq_all, /* SOS_OUTDISC */
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sscop_udtreq_all, /* SOS_OUTRESYN */
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sscop_udtreq_all, /* SOS_INRESYN */
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sscop_udtreq_all, /* SOS_OUTRECOV */
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sscop_udtreq_all, /* SOS_RECOVRSP */
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sscop_udtreq_all, /* SOS_INRECOV */
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sscop_udtreq_all, /* SOS_READY */
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sscop_aa_noop_1 /* SOS_TERM */
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};
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/* SSCOP_RETRIEVE_REQ */
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static void (*sscop_retreq_tab[SOS_NUMSTATES])
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__P((struct sscop *, int, int)) = {
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NULL, /* SOS_INST */
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NULL, /* SOS_IDLE */
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NULL, /* SOS_OUTCONN */
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NULL, /* SOS_INCONN */
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NULL, /* SOS_OUTDISC */
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NULL, /* SOS_OUTRESYN */
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NULL, /* SOS_INRESYN */
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NULL, /* SOS_OUTRECOV */
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NULL, /* SOS_RECOVRSP */
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NULL, /* SOS_INRECOV */
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NULL, /* SOS_READY */
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NULL /* SOS_TERM */
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};
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/*
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* Stack command lookup table
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*/
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void (*(*sscop_q2110_aatab[SSCOP_CMD_SIZE]))
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__P((struct sscop *, int, int)) = {
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NULL,
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sscop_init_tab,
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sscop_term_tab,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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sscop_estreq_tab,
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NULL,
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sscop_estrsp_tab,
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NULL,
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sscop_relreq_tab,
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NULL,
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NULL,
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sscop_datreq_tab,
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NULL,
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sscop_resreq_tab,
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NULL,
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sscop_resrsp_tab,
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NULL,
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NULL,
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sscop_recrsp_tab,
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sscop_udtreq_tab,
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NULL,
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sscop_retreq_tab,
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NULL,
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NULL
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};
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/*
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* SSCOP_RESYNC_REQ / SOS_READY Command Processor
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*
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* Arguments:
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* sop pointer to sscop connection block
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* arg1 pointer to buffer containing SSCOP-UU data
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* arg2 unused
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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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static void
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sscop_resreq_ready(sop, arg1, arg2)
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struct sscop *sop;
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int arg1;
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int arg2;
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{
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/*
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* We don't support SSCOP-UU data
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*/
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if (arg1 != SSCOP_UU_NULL)
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KB_FREEALL((KBuffer *)arg1);
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/*
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* Stop data transfer timers
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*/
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sop->so_timer[SSCOP_T_POLL] = 0;
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sop->so_timer[SSCOP_T_NORESP] = 0;
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sop->so_timer[SSCOP_T_IDLE] = 0;
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sop->so_flags &= ~SOF_KEEPALIVE;
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/*
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* Initialize receiver window
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*/
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SEQ_SET(sop->so_rcvmax, sop->so_parm.sp_rcvwin);
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/*
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* Send first RS PDU
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*/
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sop->so_connctl = 1;
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SEQ_INCR(sop->so_sendconn, 1);
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(void) sscop_send_rs(sop);
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/*
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* Drain transmit and receive queues
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*/
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sscop_xmit_drain(sop);
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sscop_rcvr_drain(sop);
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/*
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* Set retransmit timer
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*/
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sop->so_timer[SSCOP_T_CC] = sop->so_parm.sp_timecc;
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/*
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* Wait for RSAK
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*/
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sop->so_state = SOS_OUTRESYN;
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return;
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}
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/*
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* SSCOP_RESYNC_RSP / SOS_INRESYN Command Processor
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*
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* Arguments:
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* sop pointer to sscop connection block
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* arg1 unused
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* arg2 unused
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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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static void
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sscop_resrsp_inresyn(sop, arg1, arg2)
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struct sscop *sop;
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int arg1;
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int arg2;
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{
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/*
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* Clear transmitter buffers
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*/
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q2110_clear_xmit(sop);
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/*
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* Initialize state variables
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*/
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SEQ_SET(sop->so_rcvmax, sop->so_parm.sp_rcvwin);
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q2110_init_state(sop);
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/*
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* Send RSAK PDU
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*/
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(void) sscop_send_rsak(sop);
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/*
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* Start data transfer timers
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*/
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sop->so_timer[SSCOP_T_POLL] = sop->so_parm.sp_timepoll;
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sop->so_timer[SSCOP_T_NORESP] = sop->so_parm.sp_timeresp;
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/*
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* Back to data transfer state
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*/
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sop->so_state = SOS_READY;
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return;
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}
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/*
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* SSCOP_RECOVER_RSP / SOS_RECOVRSP Command Processor
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*
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* Arguments:
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* sop pointer to sscop connection block
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* arg1 unused
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* arg2 unused
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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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static void
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sscop_recrsp_recovrsp(sop, arg1, arg2)
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struct sscop *sop;
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int arg1;
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int arg2;
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{
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/*
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* Clear transmitter buffers, if not done earlier
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*/
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if (sop->so_flags & SOF_NOCLRBUF)
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q2110_clear_xmit(sop);
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/*
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* Initialize state variables
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*/
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q2110_init_state(sop);
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/*
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* Start data transfer timers
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*/
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sop->so_timer[SSCOP_T_POLL] = sop->so_parm.sp_timepoll;
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sop->so_timer[SSCOP_T_NORESP] = sop->so_parm.sp_timeresp;
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/*
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* Back to data transfer state
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*/
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sop->so_state = SOS_READY;
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/*
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* See if transmit queues need servicing
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*/
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if (sop->so_flags & SOF_XMITSRVC)
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sscop_service_xmit(sop);
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return;
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}
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/*
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* SSCOP_RECOVER_RSP / SOS_INRECOV Command Processor
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*
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* Arguments:
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* sop pointer to sscop connection block
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* arg1 unused
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* arg2 unused
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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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static void
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sscop_recrsp_inrecov(sop, arg1, arg2)
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struct sscop *sop;
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int arg1;
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int arg2;
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{
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/*
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* Clear transmitter buffers, if not done earlier
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*/
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if (sop->so_flags & SOF_NOCLRBUF)
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q2110_clear_xmit(sop);
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/*
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* Initialize state variables
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*/
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SEQ_SET(sop->so_rcvmax, sop->so_parm.sp_rcvwin);
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q2110_init_state(sop);
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/*
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* Send ERAK PDU
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*/
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(void) sscop_send_erak(sop);
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/*
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* Start data transfer timers
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*/
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sop->so_timer[SSCOP_T_POLL] = sop->so_parm.sp_timepoll;
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sop->so_timer[SSCOP_T_NORESP] = sop->so_parm.sp_timeresp;
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/*
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* Back to data transfer state
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*/
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sop->so_state = SOS_READY;
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/*
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* See if transmit queues need servicing
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*/
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if (sop->so_flags & SOF_XMITSRVC)
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sscop_service_xmit(sop);
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return;
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}
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