7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
18 #include <linux/random.h>
19 #include <linux/slab.h>
30 #define TEI_ENTITY_ID 0xf
32 #define MGR_PH_ACTIVE 16
33 #define MGR_PH_NOTREADY 17
35 #define DATIMER_VAL 10000
39 static struct Fsm deactfsm = {NULL, 0, 0, NULL, NULL};
40 static struct Fsm teifsmu = {NULL, 0, 0, NULL, NULL};
41 static struct Fsm teifsmn = {NULL, 0, 0, NULL, NULL};
48 #define DEACT_STATE_COUNT (ST_L1_ACTIV + 1)
50 static char *strDeactState[] =
53 "ST_L1_DEACT_PENDING",
66 #define DEACT_EVENT_COUNT (EV_DATIMER + 1)
68 static char *strDeactEvent[] =
79 da_debug(struct FsmInst *fi, char *fmt, ...)
81 struct manager *mgr = fi->userdata;
85 if (!(*debug & DEBUG_L2_TEIFSM))
93 printk(KERN_DEBUG "mgr(%d): %pV\n", mgr->ch.st->dev->id, &vaf);
99 da_activate(struct FsmInst *fi, int event, void *arg)
101 struct manager *mgr = fi->userdata;
103 if (fi->state == ST_L1_DEACT_PENDING)
104 mISDN_FsmDelTimer(&mgr->datimer, 1);
105 mISDN_FsmChangeState(fi, ST_L1_ACTIV);
109 da_deactivate_ind(struct FsmInst *fi, int event, void *arg)
111 mISDN_FsmChangeState(fi, ST_L1_DEACT);
115 da_deactivate(struct FsmInst *fi, int event, void *arg)
117 struct manager *mgr = fi->userdata;
121 read_lock_irqsave(&mgr->lock, flags);
122 list_for_each_entry(l2, &mgr->layer2, list) {
123 if (l2->l2m.state > ST_L2_4) {
124 /* have still activ TEI */
125 read_unlock_irqrestore(&mgr->lock, flags);
129 read_unlock_irqrestore(&mgr->lock, flags);
130 /* All TEI are inactiv */
131 if (!test_bit(OPTION_L1_HOLD, &mgr->options)) {
132 mISDN_FsmAddTimer(&mgr->datimer, DATIMER_VAL, EV_DATIMER,
134 mISDN_FsmChangeState(fi, ST_L1_DEACT_PENDING);
139 da_ui(struct FsmInst *fi, int event, void *arg)
141 struct manager *mgr = fi->userdata;
143 /* restart da timer */
144 if (!test_bit(OPTION_L1_HOLD, &mgr->options)) {
145 mISDN_FsmDelTimer(&mgr->datimer, 2);
146 mISDN_FsmAddTimer(&mgr->datimer, DATIMER_VAL, EV_DATIMER,
152 da_timer(struct FsmInst *fi, int event, void *arg)
154 struct manager *mgr = fi->userdata;
159 read_lock_irqsave(&mgr->lock, flags);
160 list_for_each_entry(l2, &mgr->layer2, list) {
161 if (l2->l2m.state > ST_L2_4) {
162 /* have still activ TEI */
163 read_unlock_irqrestore(&mgr->lock, flags);
164 mISDN_FsmChangeState(fi, ST_L1_ACTIV);
168 read_unlock_irqrestore(&mgr->lock, flags);
169 /* All TEI are inactiv */
170 mISDN_FsmChangeState(fi, ST_L1_DEACT);
171 _queue_data(&mgr->ch, PH_DEACTIVATE_REQ, MISDN_ID_ANY, 0, NULL,
175 static struct FsmNode DeactFnList[] =
177 {ST_L1_DEACT, EV_ACTIVATE_IND, da_activate},
178 {ST_L1_ACTIV, EV_DEACTIVATE_IND, da_deactivate_ind},
179 {ST_L1_ACTIV, EV_DEACTIVATE, da_deactivate},
180 {ST_L1_DEACT_PENDING, EV_ACTIVATE, da_activate},
181 {ST_L1_DEACT_PENDING, EV_UI, da_ui},
182 {ST_L1_DEACT_PENDING, EV_DATIMER, da_timer},
191 #define TEI_STATE_COUNT (ST_TEI_IDVERIFY + 1)
193 static char *strTeiState[] =
212 #define TEI_EVENT_COUNT (EV_TIMER + 1)
214 static char *strTeiEvent[] =
228 tei_debug(struct FsmInst *fi, char *fmt, ...)
230 struct teimgr *tm = fi->userdata;
231 struct va_format vaf;
234 if (!(*debug & DEBUG_L2_TEIFSM))
242 printk(KERN_DEBUG "sapi(%d) tei(%d): %pV\n",
243 tm->l2->sapi, tm->l2->tei, &vaf);
251 get_free_id(struct manager *mgr)
253 DECLARE_BITMAP(ids, 64) = { [0 ... BITS_TO_LONGS(64) - 1] = 0 };
257 list_for_each_entry(l2, &mgr->layer2, list) {
258 if (l2->ch.nr > 63) {
260 "%s: more as 63 layer2 for one device\n",
264 __set_bit(l2->ch.nr, ids);
266 i = find_next_zero_bit(ids, 64, 1);
269 printk(KERN_WARNING "%s: more as 63 layer2 for one device\n",
275 get_free_tei(struct manager *mgr)
277 DECLARE_BITMAP(ids, 64) = { [0 ... BITS_TO_LONGS(64) - 1] = 0 };
281 list_for_each_entry(l2, &mgr->layer2, list) {
284 if ((l2->ch.addr & 0xff) != 0)
286 i = l2->ch.addr >> 8;
293 i = find_first_zero_bit(ids, 64);
296 printk(KERN_WARNING "%s: more as 63 dynamic tei for one device\n",
302 teiup_create(struct manager *mgr, u_int prim, int len, void *arg)
305 struct mISDNhead *hh;
308 skb = mI_alloc_skb(len, GFP_ATOMIC);
311 hh = mISDN_HEAD_P(skb);
313 hh->id = (mgr->ch.nr << 16) | mgr->ch.addr;
315 skb_put_data(skb, arg, len);
316 err = mgr->up->send(mgr->up, skb);
318 printk(KERN_WARNING "%s: err=%d\n", __func__, err);
324 new_id(struct manager *mgr)
332 id |= GROUP_TEI << 8;
338 do_send(struct manager *mgr)
340 if (!test_bit(MGR_PH_ACTIVE, &mgr->options))
343 if (!test_and_set_bit(MGR_PH_NOTREADY, &mgr->options)) {
344 struct sk_buff *skb = skb_dequeue(&mgr->sendq);
347 test_and_clear_bit(MGR_PH_NOTREADY, &mgr->options);
350 mgr->lastid = mISDN_HEAD_ID(skb);
351 mISDN_FsmEvent(&mgr->deact, EV_UI, NULL);
352 if (mgr->ch.recv(mgr->ch.peer, skb)) {
354 test_and_clear_bit(MGR_PH_NOTREADY, &mgr->options);
355 mgr->lastid = MISDN_ID_NONE;
361 do_ack(struct manager *mgr, u_int id)
363 if (test_bit(MGR_PH_NOTREADY, &mgr->options)) {
364 if (id == mgr->lastid) {
365 if (test_bit(MGR_PH_ACTIVE, &mgr->options)) {
368 skb = skb_dequeue(&mgr->sendq);
370 mgr->lastid = mISDN_HEAD_ID(skb);
371 if (!mgr->ch.recv(mgr->ch.peer, skb))
376 mgr->lastid = MISDN_ID_NONE;
377 test_and_clear_bit(MGR_PH_NOTREADY, &mgr->options);
383 mgr_send_down(struct manager *mgr, struct sk_buff *skb)
385 skb_queue_tail(&mgr->sendq, skb);
386 if (!test_bit(MGR_PH_ACTIVE, &mgr->options)) {
387 _queue_data(&mgr->ch, PH_ACTIVATE_REQ, MISDN_ID_ANY, 0,
395 dl_unit_data(struct manager *mgr, struct sk_buff *skb)
397 if (!test_bit(MGR_OPT_NETWORK, &mgr->options)) /* only net send UI */
399 if (!test_bit(MGR_PH_ACTIVE, &mgr->options))
400 _queue_data(&mgr->ch, PH_ACTIVATE_REQ, MISDN_ID_ANY, 0,
403 skb->data[0] = 0x02; /* SAPI 0 C/R = 1 */
404 skb->data[1] = 0xff; /* TEI 127 */
405 skb->data[2] = UI; /* UI frame */
406 mISDN_HEAD_PRIM(skb) = PH_DATA_REQ;
407 mISDN_HEAD_ID(skb) = new_id(mgr);
408 skb_queue_tail(&mgr->sendq, skb);
418 get_random_bytes(&x, sizeof(x));
422 static struct layer2 *
423 findtei(struct manager *mgr, int tei)
428 read_lock_irqsave(&mgr->lock, flags);
429 list_for_each_entry(l2, &mgr->layer2, list) {
430 if ((l2->sapi == 0) && (l2->tei > 0) &&
431 (l2->tei != GROUP_TEI) && (l2->tei == tei))
436 read_unlock_irqrestore(&mgr->lock, flags);
441 put_tei_msg(struct manager *mgr, u_char m_id, unsigned int ri, int tei)
446 bp[0] = (TEI_SAPI << 2);
447 if (test_bit(MGR_OPT_NETWORK, &mgr->options))
448 bp[0] |= 2; /* CR:=1 for net command */
449 bp[1] = (GROUP_TEI << 1) | 0x1;
451 bp[3] = TEI_ENTITY_ID;
455 bp[7] = ((tei << 1) & 0xff) | 1;
456 skb = _alloc_mISDN_skb(PH_DATA_REQ, new_id(mgr), 8, bp, GFP_ATOMIC);
458 printk(KERN_WARNING "%s: no skb for tei msg\n", __func__);
461 mgr_send_down(mgr, skb);
465 tei_id_request(struct FsmInst *fi, int event, void *arg)
467 struct teimgr *tm = fi->userdata;
469 if (tm->l2->tei != GROUP_TEI) {
470 tm->tei_m.printdebug(&tm->tei_m,
471 "assign request for already assigned tei %d",
475 tm->ri = random_ri();
476 if (*debug & DEBUG_L2_TEI)
477 tm->tei_m.printdebug(&tm->tei_m,
478 "assign request ri %d", tm->ri);
479 put_tei_msg(tm->mgr, ID_REQUEST, tm->ri, GROUP_TEI);
480 mISDN_FsmChangeState(fi, ST_TEI_IDREQ);
481 mISDN_FsmAddTimer(&tm->timer, tm->tval, EV_TIMER, NULL, 1);
486 tei_id_assign(struct FsmInst *fi, int event, void *arg)
488 struct teimgr *tm = fi->userdata;
493 ri = ((unsigned int) *dp++ << 8);
497 if (*debug & DEBUG_L2_TEI)
498 tm->tei_m.printdebug(fi, "identity assign ri %d tei %d",
500 l2 = findtei(tm->mgr, tei);
501 if (l2) { /* same tei is in use */
502 if (ri != l2->tm->ri) {
503 tm->tei_m.printdebug(fi,
504 "possible duplicate assignment tei %d", tei);
505 tei_l2(l2, MDL_ERROR_RSP, 0);
507 } else if (ri == tm->ri) {
508 mISDN_FsmDelTimer(&tm->timer, 1);
509 mISDN_FsmChangeState(fi, ST_TEI_NOP);
510 tei_l2(tm->l2, MDL_ASSIGN_REQ, tei);
515 tei_id_test_dup(struct FsmInst *fi, int event, void *arg)
517 struct teimgr *tm = fi->userdata;
522 ri = ((unsigned int) *dp++ << 8);
526 if (*debug & DEBUG_L2_TEI)
527 tm->tei_m.printdebug(fi, "foreign identity assign ri %d tei %d",
529 l2 = findtei(tm->mgr, tei);
530 if (l2) { /* same tei is in use */
531 if (ri != l2->tm->ri) { /* and it wasn't our request */
532 tm->tei_m.printdebug(fi,
533 "possible duplicate assignment tei %d", tei);
534 mISDN_FsmEvent(&l2->tm->tei_m, EV_VERIFY, NULL);
540 tei_id_denied(struct FsmInst *fi, int event, void *arg)
542 struct teimgr *tm = fi->userdata;
546 ri = ((unsigned int) *dp++ << 8);
550 if (*debug & DEBUG_L2_TEI)
551 tm->tei_m.printdebug(fi, "identity denied ri %d tei %d",
556 tei_id_chk_req(struct FsmInst *fi, int event, void *arg)
558 struct teimgr *tm = fi->userdata;
562 tei = *(dp + 3) >> 1;
563 if (*debug & DEBUG_L2_TEI)
564 tm->tei_m.printdebug(fi, "identity check req tei %d", tei);
565 if ((tm->l2->tei != GROUP_TEI) && ((tei == GROUP_TEI) ||
566 (tei == tm->l2->tei))) {
567 mISDN_FsmDelTimer(&tm->timer, 4);
568 mISDN_FsmChangeState(&tm->tei_m, ST_TEI_NOP);
569 put_tei_msg(tm->mgr, ID_CHK_RES, random_ri(), tm->l2->tei);
574 tei_id_remove(struct FsmInst *fi, int event, void *arg)
576 struct teimgr *tm = fi->userdata;
580 tei = *(dp + 3) >> 1;
581 if (*debug & DEBUG_L2_TEI)
582 tm->tei_m.printdebug(fi, "identity remove tei %d", tei);
583 if ((tm->l2->tei != GROUP_TEI) &&
584 ((tei == GROUP_TEI) || (tei == tm->l2->tei))) {
585 mISDN_FsmDelTimer(&tm->timer, 5);
586 mISDN_FsmChangeState(&tm->tei_m, ST_TEI_NOP);
587 tei_l2(tm->l2, MDL_REMOVE_REQ, 0);
592 tei_id_verify(struct FsmInst *fi, int event, void *arg)
594 struct teimgr *tm = fi->userdata;
596 if (*debug & DEBUG_L2_TEI)
597 tm->tei_m.printdebug(fi, "id verify request for tei %d",
599 put_tei_msg(tm->mgr, ID_VERIFY, 0, tm->l2->tei);
600 mISDN_FsmChangeState(&tm->tei_m, ST_TEI_IDVERIFY);
601 mISDN_FsmAddTimer(&tm->timer, tm->tval, EV_TIMER, NULL, 2);
606 tei_id_req_tout(struct FsmInst *fi, int event, void *arg)
608 struct teimgr *tm = fi->userdata;
611 tm->ri = random_ri();
612 if (*debug & DEBUG_L2_TEI)
613 tm->tei_m.printdebug(fi, "assign req(%d) ri %d",
614 4 - tm->nval, tm->ri);
615 put_tei_msg(tm->mgr, ID_REQUEST, tm->ri, GROUP_TEI);
616 mISDN_FsmAddTimer(&tm->timer, tm->tval, EV_TIMER, NULL, 3);
618 tm->tei_m.printdebug(fi, "assign req failed");
619 tei_l2(tm->l2, MDL_ERROR_RSP, 0);
620 mISDN_FsmChangeState(fi, ST_TEI_NOP);
625 tei_id_ver_tout(struct FsmInst *fi, int event, void *arg)
627 struct teimgr *tm = fi->userdata;
630 if (*debug & DEBUG_L2_TEI)
631 tm->tei_m.printdebug(fi,
632 "id verify req(%d) for tei %d",
633 3 - tm->nval, tm->l2->tei);
634 put_tei_msg(tm->mgr, ID_VERIFY, 0, tm->l2->tei);
635 mISDN_FsmAddTimer(&tm->timer, tm->tval, EV_TIMER, NULL, 4);
637 tm->tei_m.printdebug(fi, "verify req for tei %d failed",
639 tei_l2(tm->l2, MDL_REMOVE_REQ, 0);
640 mISDN_FsmChangeState(fi, ST_TEI_NOP);
644 static struct FsmNode TeiFnListUser[] =
646 {ST_TEI_NOP, EV_IDREQ, tei_id_request},
647 {ST_TEI_NOP, EV_ASSIGN, tei_id_test_dup},
648 {ST_TEI_NOP, EV_VERIFY, tei_id_verify},
649 {ST_TEI_NOP, EV_REMOVE, tei_id_remove},
650 {ST_TEI_NOP, EV_CHKREQ, tei_id_chk_req},
651 {ST_TEI_IDREQ, EV_TIMER, tei_id_req_tout},
652 {ST_TEI_IDREQ, EV_ASSIGN, tei_id_assign},
653 {ST_TEI_IDREQ, EV_DENIED, tei_id_denied},
654 {ST_TEI_IDVERIFY, EV_TIMER, tei_id_ver_tout},
655 {ST_TEI_IDVERIFY, EV_REMOVE, tei_id_remove},
656 {ST_TEI_IDVERIFY, EV_CHKREQ, tei_id_chk_req},
660 tei_l2remove(struct layer2 *l2)
662 put_tei_msg(l2->tm->mgr, ID_REMOVE, 0, l2->tei);
663 tei_l2(l2, MDL_REMOVE_REQ, 0);
664 list_del(&l2->ch.list);
665 l2->ch.ctrl(&l2->ch, CLOSE_CHANNEL, NULL);
669 tei_assign_req(struct FsmInst *fi, int event, void *arg)
671 struct teimgr *tm = fi->userdata;
674 if (tm->l2->tei == GROUP_TEI) {
675 tm->tei_m.printdebug(&tm->tei_m,
676 "net tei assign request without tei");
679 tm->ri = ((unsigned int) *dp++ << 8);
681 if (*debug & DEBUG_L2_TEI)
682 tm->tei_m.printdebug(&tm->tei_m,
683 "net assign request ri %d teim %d", tm->ri, *dp);
684 put_tei_msg(tm->mgr, ID_ASSIGNED, tm->ri, tm->l2->tei);
685 mISDN_FsmChangeState(fi, ST_TEI_NOP);
689 tei_id_chk_req_net(struct FsmInst *fi, int event, void *arg)
691 struct teimgr *tm = fi->userdata;
693 if (*debug & DEBUG_L2_TEI)
694 tm->tei_m.printdebug(fi, "id check request for tei %d",
697 put_tei_msg(tm->mgr, ID_CHK_REQ, 0, tm->l2->tei);
698 mISDN_FsmChangeState(&tm->tei_m, ST_TEI_IDVERIFY);
699 mISDN_FsmAddTimer(&tm->timer, tm->tval, EV_TIMER, NULL, 2);
704 tei_id_chk_resp(struct FsmInst *fi, int event, void *arg)
706 struct teimgr *tm = fi->userdata;
711 if (*debug & DEBUG_L2_TEI)
712 tm->tei_m.printdebug(fi, "identity check resp tei %d", tei);
713 if (tei == tm->l2->tei)
718 tei_id_verify_net(struct FsmInst *fi, int event, void *arg)
720 struct teimgr *tm = fi->userdata;
725 if (*debug & DEBUG_L2_TEI)
726 tm->tei_m.printdebug(fi, "identity verify req tei %d/%d",
728 if (tei == tm->l2->tei)
729 tei_id_chk_req_net(fi, event, arg);
733 tei_id_ver_tout_net(struct FsmInst *fi, int event, void *arg)
735 struct teimgr *tm = fi->userdata;
738 if (*debug & DEBUG_L2_TEI)
739 tm->tei_m.printdebug(fi,
740 "check req for tei %d successful\n", tm->l2->tei);
741 mISDN_FsmChangeState(fi, ST_TEI_NOP);
742 } else if (tm->rcnt > 1) {
743 /* duplicate assignment; remove */
744 tei_l2remove(tm->l2);
745 } else if (--tm->nval) {
746 if (*debug & DEBUG_L2_TEI)
747 tm->tei_m.printdebug(fi,
748 "id check req(%d) for tei %d",
749 3 - tm->nval, tm->l2->tei);
750 put_tei_msg(tm->mgr, ID_CHK_REQ, 0, tm->l2->tei);
751 mISDN_FsmAddTimer(&tm->timer, tm->tval, EV_TIMER, NULL, 4);
753 tm->tei_m.printdebug(fi, "check req for tei %d failed",
755 mISDN_FsmChangeState(fi, ST_TEI_NOP);
756 tei_l2remove(tm->l2);
760 static struct FsmNode TeiFnListNet[] =
762 {ST_TEI_NOP, EV_ASSIGN_REQ, tei_assign_req},
763 {ST_TEI_NOP, EV_VERIFY, tei_id_verify_net},
764 {ST_TEI_NOP, EV_CHKREQ, tei_id_chk_req_net},
765 {ST_TEI_IDVERIFY, EV_TIMER, tei_id_ver_tout_net},
766 {ST_TEI_IDVERIFY, EV_CHKRESP, tei_id_chk_resp},
770 tei_ph_data_ind(struct teimgr *tm, u_int mt, u_char *dp, int len)
772 if (test_bit(FLG_FIXED_TEI, &tm->l2->flag))
774 if (*debug & DEBUG_L2_TEI)
775 tm->tei_m.printdebug(&tm->tei_m, "tei handler mt %x", mt);
776 if (mt == ID_ASSIGNED)
777 mISDN_FsmEvent(&tm->tei_m, EV_ASSIGN, dp);
778 else if (mt == ID_DENIED)
779 mISDN_FsmEvent(&tm->tei_m, EV_DENIED, dp);
780 else if (mt == ID_CHK_REQ)
781 mISDN_FsmEvent(&tm->tei_m, EV_CHKREQ, dp);
782 else if (mt == ID_REMOVE)
783 mISDN_FsmEvent(&tm->tei_m, EV_REMOVE, dp);
784 else if (mt == ID_VERIFY)
785 mISDN_FsmEvent(&tm->tei_m, EV_VERIFY, dp);
786 else if (mt == ID_CHK_RES)
787 mISDN_FsmEvent(&tm->tei_m, EV_CHKRESP, dp);
790 static struct layer2 *
791 create_new_tei(struct manager *mgr, int tei, int sapi)
793 unsigned long opt = 0;
797 struct channel_req rq;
801 if ((tei >= 0) && (tei < 64))
802 test_and_set_bit(OPTION_L2_FIXEDTEI, &opt);
803 if (mgr->ch.st->dev->Dprotocols & ((1 << ISDN_P_TE_E1) |
804 (1 << ISDN_P_NT_E1))) {
805 test_and_set_bit(OPTION_L2_PMX, &opt);
806 rq.protocol = ISDN_P_NT_E1;
808 rq.protocol = ISDN_P_NT_S0;
810 l2 = create_l2(mgr->up, ISDN_P_LAPD_NT, opt, tei, sapi);
812 printk(KERN_WARNING "%s:no memory for layer2\n", __func__);
815 l2->tm = kzalloc(sizeof(struct teimgr), GFP_KERNEL);
818 printk(KERN_WARNING "%s:no memory for teimgr\n", __func__);
823 l2->tm->tei_m.debug = *debug & DEBUG_L2_TEIFSM;
824 l2->tm->tei_m.userdata = l2->tm;
825 l2->tm->tei_m.printdebug = tei_debug;
826 l2->tm->tei_m.fsm = &teifsmn;
827 l2->tm->tei_m.state = ST_TEI_NOP;
828 l2->tm->tval = 2000; /* T202 2 sec */
829 mISDN_FsmInitTimer(&l2->tm->tei_m, &l2->tm->timer);
830 write_lock_irqsave(&mgr->lock, flags);
831 id = get_free_id(mgr);
832 list_add_tail(&l2->list, &mgr->layer2);
833 write_unlock_irqrestore(&mgr->lock, flags);
835 l2->ch.ctrl(&l2->ch, CLOSE_CHANNEL, NULL);
836 printk(KERN_WARNING "%s:no free id\n", __func__);
840 __add_layer2(&l2->ch, mgr->ch.st);
841 l2->ch.recv = mgr->ch.recv;
842 l2->ch.peer = mgr->ch.peer;
843 l2->ch.ctrl(&l2->ch, OPEN_CHANNEL, NULL);
844 /* We need open here L1 for the manager as well (refcounting) */
845 rq.adr.dev = mgr->ch.st->dev->id;
846 id = mgr->ch.st->own.ctrl(&mgr->ch.st->own, OPEN_CHANNEL, &rq);
848 printk(KERN_WARNING "%s: cannot open L1\n", __func__);
849 l2->ch.ctrl(&l2->ch, CLOSE_CHANNEL, NULL);
857 new_tei_req(struct manager *mgr, u_char *dp)
866 if (!(dp[3] & 1)) /* Extension bit != 1 */
869 tei = dp[3] >> 1; /* 3GPP TS 08.56 6.1.11.2 */
871 tei = get_free_tei(mgr);
873 printk(KERN_WARNING "%s:No free tei\n", __func__);
876 l2 = create_new_tei(mgr, tei, CTRL_SAPI);
880 mISDN_FsmEvent(&l2->tm->tei_m, EV_ASSIGN_REQ, dp);
883 put_tei_msg(mgr, ID_DENIED, ri, GROUP_TEI);
887 ph_data_ind(struct manager *mgr, struct sk_buff *skb)
890 struct layer2 *l2, *nl2;
894 if (*debug & DEBUG_L2_TEI)
895 printk(KERN_DEBUG "%s: short mgr frame %d/8\n",
900 if ((skb->data[0] >> 2) != TEI_SAPI) /* not for us */
902 if (skb->data[0] & 1) /* EA0 formal error */
904 if (!(skb->data[1] & 1)) /* EA1 formal error */
906 if ((skb->data[1] >> 1) != GROUP_TEI) /* not for us */
908 if ((skb->data[2] & 0xef) != UI) /* not UI */
910 if (skb->data[3] != TEI_ENTITY_ID) /* not tei entity */
917 if (!test_bit(MGR_OPT_NETWORK, &mgr->options))
924 if (test_bit(MGR_OPT_NETWORK, &mgr->options))
931 if (mt == ID_REQUEST) {
932 new_tei_req(mgr, &skb->data[4]);
935 list_for_each_entry_safe(l2, nl2, &mgr->layer2, list) {
936 tei_ph_data_ind(l2->tm, mt, &skb->data[4], skb->len - 4);
943 l2_tei(struct layer2 *l2, u_int cmd, u_long arg)
945 struct teimgr *tm = l2->tm;
947 if (test_bit(FLG_FIXED_TEI, &l2->flag))
949 if (*debug & DEBUG_L2_TEI)
950 printk(KERN_DEBUG "%s: cmd(%x)\n", __func__, cmd);
953 mISDN_FsmEvent(&tm->tei_m, EV_IDREQ, NULL);
956 if (test_bit(MGR_OPT_NETWORK, &tm->mgr->options))
957 mISDN_FsmEvent(&tm->tei_m, EV_CHKREQ, &l2->tei);
958 if (test_bit(MGR_OPT_USER, &tm->mgr->options))
959 mISDN_FsmEvent(&tm->tei_m, EV_VERIFY, NULL);
961 case MDL_STATUS_UP_IND:
962 if (test_bit(MGR_OPT_NETWORK, &tm->mgr->options))
963 mISDN_FsmEvent(&tm->mgr->deact, EV_ACTIVATE, NULL);
965 case MDL_STATUS_DOWN_IND:
966 if (test_bit(MGR_OPT_NETWORK, &tm->mgr->options))
967 mISDN_FsmEvent(&tm->mgr->deact, EV_DEACTIVATE, NULL);
969 case MDL_STATUS_UI_IND:
970 if (test_bit(MGR_OPT_NETWORK, &tm->mgr->options))
971 mISDN_FsmEvent(&tm->mgr->deact, EV_UI, NULL);
978 TEIrelease(struct layer2 *l2)
980 struct teimgr *tm = l2->tm;
983 mISDN_FsmDelTimer(&tm->timer, 1);
984 write_lock_irqsave(&tm->mgr->lock, flags);
986 write_unlock_irqrestore(&tm->mgr->lock, flags);
992 create_teimgr(struct manager *mgr, struct channel_req *crq)
995 unsigned long opt = 0;
998 struct channel_req l1rq;
1000 if (*debug & DEBUG_L2_TEI)
1001 printk(KERN_DEBUG "%s: %s proto(%x) adr(%d %d %d %d)\n",
1002 __func__, dev_name(&mgr->ch.st->dev->dev),
1003 crq->protocol, crq->adr.dev, crq->adr.channel,
1004 crq->adr.sapi, crq->adr.tei);
1005 if (crq->adr.tei > GROUP_TEI)
1007 if (crq->adr.tei < 64)
1008 test_and_set_bit(OPTION_L2_FIXEDTEI, &opt);
1009 if (crq->adr.tei == 0)
1010 test_and_set_bit(OPTION_L2_PTP, &opt);
1011 if (test_bit(MGR_OPT_NETWORK, &mgr->options)) {
1012 if (crq->protocol == ISDN_P_LAPD_TE)
1013 return -EPROTONOSUPPORT;
1014 if ((crq->adr.tei != 0) && (crq->adr.tei != 127))
1018 "%s: only one network manager is allowed\n",
1022 } else if (test_bit(MGR_OPT_USER, &mgr->options)) {
1023 if (crq->protocol == ISDN_P_LAPD_NT)
1024 return -EPROTONOSUPPORT;
1025 if ((crq->adr.tei >= 64) && (crq->adr.tei < GROUP_TEI))
1026 return -EINVAL; /* dyn tei */
1028 if (crq->protocol == ISDN_P_LAPD_NT)
1029 test_and_set_bit(MGR_OPT_NETWORK, &mgr->options);
1030 if (crq->protocol == ISDN_P_LAPD_TE)
1031 test_and_set_bit(MGR_OPT_USER, &mgr->options);
1033 l1rq.adr = crq->adr;
1034 if (mgr->ch.st->dev->Dprotocols
1035 & ((1 << ISDN_P_TE_E1) | (1 << ISDN_P_NT_E1)))
1036 test_and_set_bit(OPTION_L2_PMX, &opt);
1037 if ((crq->protocol == ISDN_P_LAPD_NT) && (crq->adr.tei == 127)) {
1039 id = DL_INFO_L2_CONNECT;
1040 teiup_create(mgr, DL_INFORMATION_IND, sizeof(id), &id);
1041 if (test_bit(MGR_PH_ACTIVE, &mgr->options))
1042 teiup_create(mgr, PH_ACTIVATE_IND, 0, NULL);
1044 if (!list_empty(&mgr->layer2)) {
1045 read_lock_irqsave(&mgr->lock, flags);
1046 list_for_each_entry(l2, &mgr->layer2, list) {
1048 l2->ch.ctrl(&l2->ch, OPEN_CHANNEL, NULL);
1050 read_unlock_irqrestore(&mgr->lock, flags);
1054 l2 = create_l2(crq->ch, crq->protocol, opt,
1055 crq->adr.tei, crq->adr.sapi);
1058 l2->tm = kzalloc(sizeof(struct teimgr), GFP_KERNEL);
1061 printk(KERN_ERR "kmalloc teimgr failed\n");
1066 l2->tm->tei_m.debug = *debug & DEBUG_L2_TEIFSM;
1067 l2->tm->tei_m.userdata = l2->tm;
1068 l2->tm->tei_m.printdebug = tei_debug;
1069 if (crq->protocol == ISDN_P_LAPD_TE) {
1070 l2->tm->tei_m.fsm = &teifsmu;
1071 l2->tm->tei_m.state = ST_TEI_NOP;
1072 l2->tm->tval = 1000; /* T201 1 sec */
1073 if (test_bit(OPTION_L2_PMX, &opt))
1074 l1rq.protocol = ISDN_P_TE_E1;
1076 l1rq.protocol = ISDN_P_TE_S0;
1078 l2->tm->tei_m.fsm = &teifsmn;
1079 l2->tm->tei_m.state = ST_TEI_NOP;
1080 l2->tm->tval = 2000; /* T202 2 sec */
1081 if (test_bit(OPTION_L2_PMX, &opt))
1082 l1rq.protocol = ISDN_P_NT_E1;
1084 l1rq.protocol = ISDN_P_NT_S0;
1086 mISDN_FsmInitTimer(&l2->tm->tei_m, &l2->tm->timer);
1087 write_lock_irqsave(&mgr->lock, flags);
1088 id = get_free_id(mgr);
1089 list_add_tail(&l2->list, &mgr->layer2);
1090 write_unlock_irqrestore(&mgr->lock, flags);
1095 /* We need open here L1 for the manager as well (refcounting) */
1096 id = mgr->ch.st->own.ctrl(&mgr->ch.st->own, OPEN_CHANNEL,
1100 l2->ch.ctrl(&l2->ch, CLOSE_CHANNEL, NULL);
1105 mgr_send(struct mISDNchannel *ch, struct sk_buff *skb)
1107 struct manager *mgr;
1108 struct mISDNhead *hh = mISDN_HEAD_P(skb);
1111 mgr = container_of(ch, struct manager, ch);
1112 if (*debug & DEBUG_L2_RECV)
1113 printk(KERN_DEBUG "%s: prim(%x) id(%x)\n",
1114 __func__, hh->prim, hh->id);
1117 mISDN_FsmEvent(&mgr->deact, EV_UI, NULL);
1118 ret = ph_data_ind(mgr, skb);
1121 do_ack(mgr, hh->id);
1124 case PH_ACTIVATE_IND:
1125 test_and_set_bit(MGR_PH_ACTIVE, &mgr->options);
1127 teiup_create(mgr, PH_ACTIVATE_IND, 0, NULL);
1128 mISDN_FsmEvent(&mgr->deact, EV_ACTIVATE_IND, NULL);
1132 case PH_DEACTIVATE_IND:
1133 test_and_clear_bit(MGR_PH_ACTIVE, &mgr->options);
1135 teiup_create(mgr, PH_DEACTIVATE_IND, 0, NULL);
1136 mISDN_FsmEvent(&mgr->deact, EV_DEACTIVATE_IND, NULL);
1139 case DL_UNITDATA_REQ:
1140 return dl_unit_data(mgr, skb);
1148 free_teimanager(struct manager *mgr)
1150 struct layer2 *l2, *nl2;
1152 test_and_clear_bit(OPTION_L1_HOLD, &mgr->options);
1153 if (test_bit(MGR_OPT_NETWORK, &mgr->options)) {
1154 /* not locked lock is taken in release tei */
1156 if (test_bit(OPTION_L2_CLEANUP, &mgr->options)) {
1157 list_for_each_entry_safe(l2, nl2, &mgr->layer2, list) {
1158 put_tei_msg(mgr, ID_REMOVE, 0, l2->tei);
1159 mutex_lock(&mgr->ch.st->lmutex);
1160 list_del(&l2->ch.list);
1161 mutex_unlock(&mgr->ch.st->lmutex);
1162 l2->ch.ctrl(&l2->ch, CLOSE_CHANNEL, NULL);
1164 test_and_clear_bit(MGR_OPT_NETWORK, &mgr->options);
1166 list_for_each_entry_safe(l2, nl2, &mgr->layer2, list) {
1171 if (test_bit(MGR_OPT_USER, &mgr->options)) {
1172 if (list_empty(&mgr->layer2))
1173 test_and_clear_bit(MGR_OPT_USER, &mgr->options);
1175 mgr->ch.st->dev->D.ctrl(&mgr->ch.st->dev->D, CLOSE_CHANNEL, NULL);
1180 ctrl_teimanager(struct manager *mgr, void *arg)
1182 /* currently we only have one option */
1183 int *val = (int *)arg;
1189 test_and_set_bit(OPTION_L2_CLEANUP, &mgr->options);
1191 test_and_clear_bit(OPTION_L2_CLEANUP, &mgr->options);
1195 test_and_set_bit(OPTION_L1_HOLD, &mgr->options);
1197 test_and_clear_bit(OPTION_L1_HOLD, &mgr->options);
1205 /* This function does create a L2 for fixed TEI in NT Mode */
1207 check_data(struct manager *mgr, struct sk_buff *skb)
1209 struct mISDNhead *hh = mISDN_HEAD_P(skb);
1213 if (*debug & DEBUG_L2_CTRL)
1214 printk(KERN_DEBUG "%s: prim(%x) id(%x)\n",
1215 __func__, hh->prim, hh->id);
1216 if (test_bit(MGR_OPT_USER, &mgr->options))
1218 if (hh->prim != PH_DATA_IND)
1222 if (skb->data[0] & 3) /* EA0 and CR must be 0 */
1224 sapi = skb->data[0] >> 2;
1225 if (!(skb->data[1] & 1)) /* invalid EA1 */
1227 tei = skb->data[1] >> 1;
1228 if (tei > 63) /* not a fixed tei */
1230 if ((skb->data[2] & ~0x10) != SABME)
1232 /* We got a SABME for a fixed TEI */
1233 if (*debug & DEBUG_L2_CTRL)
1234 printk(KERN_DEBUG "%s: SABME sapi(%d) tei(%d)\n",
1235 __func__, sapi, tei);
1236 l2 = create_new_tei(mgr, tei, sapi);
1238 if (*debug & DEBUG_L2_CTRL)
1239 printk(KERN_DEBUG "%s: failed to create new tei\n",
1243 ret = l2->ch.send(&l2->ch, skb);
1248 delete_teimanager(struct mISDNchannel *ch)
1250 struct manager *mgr;
1251 struct layer2 *l2, *nl2;
1253 mgr = container_of(ch, struct manager, ch);
1254 /* not locked lock is taken in release tei */
1255 list_for_each_entry_safe(l2, nl2, &mgr->layer2, list) {
1256 mutex_lock(&mgr->ch.st->lmutex);
1257 list_del(&l2->ch.list);
1258 mutex_unlock(&mgr->ch.st->lmutex);
1259 l2->ch.ctrl(&l2->ch, CLOSE_CHANNEL, NULL);
1261 list_del(&mgr->ch.list);
1262 list_del(&mgr->bcast.list);
1263 skb_queue_purge(&mgr->sendq);
1268 mgr_ctrl(struct mISDNchannel *ch, u_int cmd, void *arg)
1270 struct manager *mgr;
1273 mgr = container_of(ch, struct manager, ch);
1274 if (*debug & DEBUG_L2_CTRL)
1275 printk(KERN_DEBUG "%s(%x, %p)\n", __func__, cmd, arg);
1278 ret = create_teimgr(mgr, arg);
1281 ret = free_teimanager(mgr);
1283 case CONTROL_CHANNEL:
1284 ret = ctrl_teimanager(mgr, arg);
1287 ret = check_data(mgr, arg);
1294 mgr_bcast(struct mISDNchannel *ch, struct sk_buff *skb)
1296 struct manager *mgr = container_of(ch, struct manager, bcast);
1297 struct mISDNhead *hhc, *hh = mISDN_HEAD_P(skb);
1298 struct sk_buff *cskb = NULL;
1303 read_lock_irqsave(&mgr->lock, flags);
1304 list_for_each_entry(l2, &mgr->layer2, list) {
1305 if ((hh->id & MISDN_ID_SAPI_MASK) ==
1306 (l2->ch.addr & MISDN_ID_SAPI_MASK)) {
1307 if (list_is_last(&l2->list, &mgr->layer2)) {
1312 cskb = skb_copy(skb, GFP_ATOMIC);
1315 hhc = mISDN_HEAD_P(cskb);
1316 /* save original header behind normal header */
1320 hhc->prim = DL_INTERN_MSG;
1321 hhc->id = l2->ch.nr;
1322 ret = ch->st->own.recv(&ch->st->own, cskb);
1324 if (*debug & DEBUG_SEND_ERR)
1326 "%s ch%d prim(%x) addr(%x)"
1328 __func__, l2->ch.nr,
1329 hh->prim, l2->ch.addr, ret);
1333 printk(KERN_WARNING "%s ch%d addr %x no mem\n",
1334 __func__, ch->nr, ch->addr);
1340 read_unlock_irqrestore(&mgr->lock, flags);
1342 dev_kfree_skb(cskb);
1349 mgr_bcast_ctrl(struct mISDNchannel *ch, u_int cmd, void *arg)
1356 create_teimanager(struct mISDNdevice *dev)
1358 struct manager *mgr;
1360 mgr = kzalloc(sizeof(struct manager), GFP_KERNEL);
1363 INIT_LIST_HEAD(&mgr->layer2);
1364 rwlock_init(&mgr->lock);
1365 skb_queue_head_init(&mgr->sendq);
1367 mgr->lastid = MISDN_ID_NONE;
1368 mgr->ch.send = mgr_send;
1369 mgr->ch.ctrl = mgr_ctrl;
1370 mgr->ch.st = dev->D.st;
1371 set_channel_address(&mgr->ch, TEI_SAPI, GROUP_TEI);
1372 add_layer2(&mgr->ch, dev->D.st);
1373 mgr->bcast.send = mgr_bcast;
1374 mgr->bcast.ctrl = mgr_bcast_ctrl;
1375 mgr->bcast.st = dev->D.st;
1376 set_channel_address(&mgr->bcast, 0, GROUP_TEI);
1377 add_layer2(&mgr->bcast, dev->D.st);
1378 mgr->deact.debug = *debug & DEBUG_MANAGER;
1379 mgr->deact.userdata = mgr;
1380 mgr->deact.printdebug = da_debug;
1381 mgr->deact.fsm = &deactfsm;
1382 mgr->deact.state = ST_L1_DEACT;
1383 mISDN_FsmInitTimer(&mgr->deact, &mgr->datimer);
1384 dev->teimgr = &mgr->ch;
1388 int TEIInit(u_int *deb)
1392 teifsmu.state_count = TEI_STATE_COUNT;
1393 teifsmu.event_count = TEI_EVENT_COUNT;
1394 teifsmu.strEvent = strTeiEvent;
1395 teifsmu.strState = strTeiState;
1396 res = mISDN_FsmNew(&teifsmu, TeiFnListUser, ARRAY_SIZE(TeiFnListUser));
1399 teifsmn.state_count = TEI_STATE_COUNT;
1400 teifsmn.event_count = TEI_EVENT_COUNT;
1401 teifsmn.strEvent = strTeiEvent;
1402 teifsmn.strState = strTeiState;
1403 res = mISDN_FsmNew(&teifsmn, TeiFnListNet, ARRAY_SIZE(TeiFnListNet));
1406 deactfsm.state_count = DEACT_STATE_COUNT;
1407 deactfsm.event_count = DEACT_EVENT_COUNT;
1408 deactfsm.strEvent = strDeactEvent;
1409 deactfsm.strState = strDeactState;
1410 res = mISDN_FsmNew(&deactfsm, DeactFnList, ARRAY_SIZE(DeactFnList));
1416 mISDN_FsmFree(&teifsmn);
1418 mISDN_FsmFree(&teifsmu);
1425 mISDN_FsmFree(&teifsmu);
1426 mISDN_FsmFree(&teifsmn);
1427 mISDN_FsmFree(&deactfsm);