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linux/drivers/isdn/mISDN/tei.c
Akinobu Mita 481af03bfb mISDN: improve bitops usage 
This improves bitops usages in several points:

- Convert u64 to a proper bitmap declaration.  This enables to remove
  superfluous typecasting from 'u64' to 'unsigned long *'.

- Convert superfluous atomic bitops to non atomic bitops.  The bitmap
  is allocated on the stack and it is not accessed by any other threads,
  so using atomic bitops is not necessary.

- Use find_next_zero_bit and find_next_zero_bit instead of calling
  test_bit() for each bit.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Karsten Keil <isdn@linux-pingi.de>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-30 12:10:57 -05:00

1415 lines
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/*
*
* Author Karsten Keil <kkeil@novell.com>
*
* Copyright 2008 by Karsten Keil <kkeil@novell.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include "layer2.h"
#include <linux/random.h>
#include <linux/slab.h>
#include "core.h"
#define ID_REQUEST 1
#define ID_ASSIGNED 2
#define ID_DENIED 3
#define ID_CHK_REQ 4
#define ID_CHK_RES 5
#define ID_REMOVE 6
#define ID_VERIFY 7
#define TEI_ENTITY_ID 0xf
#define MGR_PH_ACTIVE 16
#define MGR_PH_NOTREADY 17
#define DATIMER_VAL 10000
static u_int *debug;
static struct Fsm deactfsm = {NULL, 0, 0, NULL, NULL};
static struct Fsm teifsmu = {NULL, 0, 0, NULL, NULL};
static struct Fsm teifsmn = {NULL, 0, 0, NULL, NULL};
enum {
ST_L1_DEACT,
ST_L1_DEACT_PENDING,
ST_L1_ACTIV,
};
#define DEACT_STATE_COUNT (ST_L1_ACTIV + 1)
static char *strDeactState[] =
{
"ST_L1_DEACT",
"ST_L1_DEACT_PENDING",
"ST_L1_ACTIV",
};
enum {
EV_ACTIVATE,
EV_ACTIVATE_IND,
EV_DEACTIVATE,
EV_DEACTIVATE_IND,
EV_UI,
EV_DATIMER,
};
#define DEACT_EVENT_COUNT (EV_DATIMER + 1)
static char *strDeactEvent[] =
{
"EV_ACTIVATE",
"EV_ACTIVATE_IND",
"EV_DEACTIVATE",
"EV_DEACTIVATE_IND",
"EV_UI",
"EV_DATIMER",
};
static void
da_debug(struct FsmInst *fi, char *fmt, ...)
{
struct manager *mgr = fi->userdata;
struct va_format vaf;
va_list va;
if (!(*debug & DEBUG_L2_TEIFSM))
return;
va_start(va, fmt);
vaf.fmt = fmt;
vaf.va = &va;
printk(KERN_DEBUG "mgr(%d): %pV\n", mgr->ch.st->dev->id, &vaf);
va_end(va);
}
static void
da_activate(struct FsmInst *fi, int event, void *arg)
{
struct manager *mgr = fi->userdata;
if (fi->state == ST_L1_DEACT_PENDING)
mISDN_FsmDelTimer(&mgr->datimer, 1);
mISDN_FsmChangeState(fi, ST_L1_ACTIV);
}
static void
da_deactivate_ind(struct FsmInst *fi, int event, void *arg)
{
mISDN_FsmChangeState(fi, ST_L1_DEACT);
}
static void
da_deactivate(struct FsmInst *fi, int event, void *arg)
{
struct manager *mgr = fi->userdata;
struct layer2 *l2;
u_long flags;
read_lock_irqsave(&mgr->lock, flags);
list_for_each_entry(l2, &mgr->layer2, list) {
if (l2->l2m.state > ST_L2_4) {
/* have still activ TEI */
read_unlock_irqrestore(&mgr->lock, flags);
return;
}
}
read_unlock_irqrestore(&mgr->lock, flags);
/* All TEI are inactiv */
if (!test_bit(OPTION_L1_HOLD, &mgr->options)) {
mISDN_FsmAddTimer(&mgr->datimer, DATIMER_VAL, EV_DATIMER,
NULL, 1);
mISDN_FsmChangeState(fi, ST_L1_DEACT_PENDING);
}
}
static void
da_ui(struct FsmInst *fi, int event, void *arg)
{
struct manager *mgr = fi->userdata;
/* restart da timer */
if (!test_bit(OPTION_L1_HOLD, &mgr->options)) {
mISDN_FsmDelTimer(&mgr->datimer, 2);
mISDN_FsmAddTimer(&mgr->datimer, DATIMER_VAL, EV_DATIMER,
NULL, 2);
}
}
static void
da_timer(struct FsmInst *fi, int event, void *arg)
{
struct manager *mgr = fi->userdata;
struct layer2 *l2;
u_long flags;
/* check again */
read_lock_irqsave(&mgr->lock, flags);
list_for_each_entry(l2, &mgr->layer2, list) {
if (l2->l2m.state > ST_L2_4) {
/* have still activ TEI */
read_unlock_irqrestore(&mgr->lock, flags);
mISDN_FsmChangeState(fi, ST_L1_ACTIV);
return;
}
}
read_unlock_irqrestore(&mgr->lock, flags);
/* All TEI are inactiv */
mISDN_FsmChangeState(fi, ST_L1_DEACT);
_queue_data(&mgr->ch, PH_DEACTIVATE_REQ, MISDN_ID_ANY, 0, NULL,
GFP_ATOMIC);
}
static struct FsmNode DeactFnList[] =
{
{ST_L1_DEACT, EV_ACTIVATE_IND, da_activate},
{ST_L1_ACTIV, EV_DEACTIVATE_IND, da_deactivate_ind},
{ST_L1_ACTIV, EV_DEACTIVATE, da_deactivate},
{ST_L1_DEACT_PENDING, EV_ACTIVATE, da_activate},
{ST_L1_DEACT_PENDING, EV_UI, da_ui},
{ST_L1_DEACT_PENDING, EV_DATIMER, da_timer},
};
enum {
ST_TEI_NOP,
ST_TEI_IDREQ,
ST_TEI_IDVERIFY,
};
#define TEI_STATE_COUNT (ST_TEI_IDVERIFY + 1)
static char *strTeiState[] =
{
"ST_TEI_NOP",
"ST_TEI_IDREQ",
"ST_TEI_IDVERIFY",
};
enum {
EV_IDREQ,
EV_ASSIGN,
EV_ASSIGN_REQ,
EV_DENIED,
EV_CHKREQ,
EV_CHKRESP,
EV_REMOVE,
EV_VERIFY,
EV_TIMER,
};
#define TEI_EVENT_COUNT (EV_TIMER + 1)
static char *strTeiEvent[] =
{
"EV_IDREQ",
"EV_ASSIGN",
"EV_ASSIGN_REQ",
"EV_DENIED",
"EV_CHKREQ",
"EV_CHKRESP",
"EV_REMOVE",
"EV_VERIFY",
"EV_TIMER",
};
static void
tei_debug(struct FsmInst *fi, char *fmt, ...)
{
struct teimgr *tm = fi->userdata;
struct va_format vaf;
va_list va;
if (!(*debug & DEBUG_L2_TEIFSM))
return;
va_start(va, fmt);
vaf.fmt = fmt;
vaf.va = &va;
printk(KERN_DEBUG "sapi(%d) tei(%d): %pV\n",
tm->l2->sapi, tm->l2->tei, &vaf);
va_end(va);
}
static int
get_free_id(struct manager *mgr)
{
DECLARE_BITMAP(ids, 64) = { [0 ... BITS_TO_LONGS(64) - 1] = 0 };
int i;
struct layer2 *l2;
list_for_each_entry(l2, &mgr->layer2, list) {
if (l2->ch.nr > 63) {
printk(KERN_WARNING
"%s: more as 63 layer2 for one device\n",
__func__);
return -EBUSY;
}
__set_bit(l2->ch.nr, ids);
}
i = find_next_zero_bit(ids, 64, 1);
if (i < 64)
return i;
printk(KERN_WARNING "%s: more as 63 layer2 for one device\n",
__func__);
return -EBUSY;
}
static int
get_free_tei(struct manager *mgr)
{
DECLARE_BITMAP(ids, 64) = { [0 ... BITS_TO_LONGS(64) - 1] = 0 };
int i;
struct layer2 *l2;
list_for_each_entry(l2, &mgr->layer2, list) {
if (l2->ch.nr == 0)
continue;
if ((l2->ch.addr & 0xff) != 0)
continue;
i = l2->ch.addr >> 8;
if (i < 64)
continue;
i -= 64;
__set_bit(i, ids);
}
i = find_first_zero_bit(ids, 64);
if (i < 64)
return i + 64;
printk(KERN_WARNING "%s: more as 63 dynamic tei for one device\n",
__func__);
return -1;
}
static void
teiup_create(struct manager *mgr, u_int prim, int len, void *arg)
{
struct sk_buff *skb;
struct mISDNhead *hh;
int err;
skb = mI_alloc_skb(len, GFP_ATOMIC);
if (!skb)
return;
hh = mISDN_HEAD_P(skb);
hh->prim = prim;
hh->id = (mgr->ch.nr << 16) | mgr->ch.addr;
if (len)
memcpy(skb_put(skb, len), arg, len);
err = mgr->up->send(mgr->up, skb);
if (err) {
printk(KERN_WARNING "%s: err=%d\n", __func__, err);
dev_kfree_skb(skb);
}
}
static u_int
new_id(struct manager *mgr)
{
u_int id;
id = mgr->nextid++;
if (id == 0x7fff)
mgr->nextid = 1;
id <<= 16;
id |= GROUP_TEI << 8;
id |= TEI_SAPI;
return id;
}
static void
do_send(struct manager *mgr)
{
if (!test_bit(MGR_PH_ACTIVE, &mgr->options))
return;
if (!test_and_set_bit(MGR_PH_NOTREADY, &mgr->options)) {
struct sk_buff *skb = skb_dequeue(&mgr->sendq);
if (!skb) {
test_and_clear_bit(MGR_PH_NOTREADY, &mgr->options);
return;
}
mgr->lastid = mISDN_HEAD_ID(skb);
mISDN_FsmEvent(&mgr->deact, EV_UI, NULL);
if (mgr->ch.recv(mgr->ch.peer, skb)) {
dev_kfree_skb(skb);
test_and_clear_bit(MGR_PH_NOTREADY, &mgr->options);
mgr->lastid = MISDN_ID_NONE;
}
}
}
static void
do_ack(struct manager *mgr, u_int id)
{
if (test_bit(MGR_PH_NOTREADY, &mgr->options)) {
if (id == mgr->lastid) {
if (test_bit(MGR_PH_ACTIVE, &mgr->options)) {
struct sk_buff *skb;
skb = skb_dequeue(&mgr->sendq);
if (skb) {
mgr->lastid = mISDN_HEAD_ID(skb);
if (!mgr->ch.recv(mgr->ch.peer, skb))
return;
dev_kfree_skb(skb);
}
}
mgr->lastid = MISDN_ID_NONE;
test_and_clear_bit(MGR_PH_NOTREADY, &mgr->options);
}
}
}
static void
mgr_send_down(struct manager *mgr, struct sk_buff *skb)
{
skb_queue_tail(&mgr->sendq, skb);
if (!test_bit(MGR_PH_ACTIVE, &mgr->options)) {
_queue_data(&mgr->ch, PH_ACTIVATE_REQ, MISDN_ID_ANY, 0,
NULL, GFP_KERNEL);
} else {
do_send(mgr);
}
}
static int
dl_unit_data(struct manager *mgr, struct sk_buff *skb)
{
if (!test_bit(MGR_OPT_NETWORK, &mgr->options)) /* only net send UI */
return -EINVAL;
if (!test_bit(MGR_PH_ACTIVE, &mgr->options))
_queue_data(&mgr->ch, PH_ACTIVATE_REQ, MISDN_ID_ANY, 0,
NULL, GFP_KERNEL);
skb_push(skb, 3);
skb->data[0] = 0x02; /* SAPI 0 C/R = 1 */
skb->data[1] = 0xff; /* TEI 127 */
skb->data[2] = UI; /* UI frame */
mISDN_HEAD_PRIM(skb) = PH_DATA_REQ;
mISDN_HEAD_ID(skb) = new_id(mgr);
skb_queue_tail(&mgr->sendq, skb);
do_send(mgr);
return 0;
}
static unsigned int
random_ri(void)
{
u16 x;
get_random_bytes(&x, sizeof(x));
return x;
}
static struct layer2 *
findtei(struct manager *mgr, int tei)
{
struct layer2 *l2;
u_long flags;
read_lock_irqsave(&mgr->lock, flags);
list_for_each_entry(l2, &mgr->layer2, list) {
if ((l2->sapi == 0) && (l2->tei > 0) &&
(l2->tei != GROUP_TEI) && (l2->tei == tei))
goto done;
}
l2 = NULL;
done:
read_unlock_irqrestore(&mgr->lock, flags);
return l2;
}
static void
put_tei_msg(struct manager *mgr, u_char m_id, unsigned int ri, int tei)
{
struct sk_buff *skb;
u_char bp[8];
bp[0] = (TEI_SAPI << 2);
if (test_bit(MGR_OPT_NETWORK, &mgr->options))
bp[0] |= 2; /* CR:=1 for net command */
bp[1] = (GROUP_TEI << 1) | 0x1;
bp[2] = UI;
bp[3] = TEI_ENTITY_ID;
bp[4] = ri >> 8;
bp[5] = ri & 0xff;
bp[6] = m_id;
bp[7] = ((tei << 1) & 0xff) | 1;
skb = _alloc_mISDN_skb(PH_DATA_REQ, new_id(mgr), 8, bp, GFP_ATOMIC);
if (!skb) {
printk(KERN_WARNING "%s: no skb for tei msg\n", __func__);
return;
}
mgr_send_down(mgr, skb);
}
static void
tei_id_request(struct FsmInst *fi, int event, void *arg)
{
struct teimgr *tm = fi->userdata;
if (tm->l2->tei != GROUP_TEI) {
tm->tei_m.printdebug(&tm->tei_m,
"assign request for already assigned tei %d",
tm->l2->tei);
return;
}
tm->ri = random_ri();
if (*debug & DEBUG_L2_TEI)
tm->tei_m.printdebug(&tm->tei_m,
"assign request ri %d", tm->ri);
put_tei_msg(tm->mgr, ID_REQUEST, tm->ri, GROUP_TEI);
mISDN_FsmChangeState(fi, ST_TEI_IDREQ);
mISDN_FsmAddTimer(&tm->timer, tm->tval, EV_TIMER, NULL, 1);
tm->nval = 3;
}
static void
tei_id_assign(struct FsmInst *fi, int event, void *arg)
{
struct teimgr *tm = fi->userdata;
struct layer2 *l2;
u_char *dp = arg;
int ri, tei;
ri = ((unsigned int) *dp++ << 8);
ri += *dp++;
dp++;
tei = *dp >> 1;
if (*debug & DEBUG_L2_TEI)
tm->tei_m.printdebug(fi, "identity assign ri %d tei %d",
ri, tei);
l2 = findtei(tm->mgr, tei);
if (l2) { /* same tei is in use */
if (ri != l2->tm->ri) {
tm->tei_m.printdebug(fi,
"possible duplicate assignment tei %d", tei);
tei_l2(l2, MDL_ERROR_RSP, 0);
}
} else if (ri == tm->ri) {
mISDN_FsmDelTimer(&tm->timer, 1);
mISDN_FsmChangeState(fi, ST_TEI_NOP);
tei_l2(tm->l2, MDL_ASSIGN_REQ, tei);
}
}
static void
tei_id_test_dup(struct FsmInst *fi, int event, void *arg)
{
struct teimgr *tm = fi->userdata;
struct layer2 *l2;
u_char *dp = arg;
int tei, ri;
ri = ((unsigned int) *dp++ << 8);
ri += *dp++;
dp++;
tei = *dp >> 1;
if (*debug & DEBUG_L2_TEI)
tm->tei_m.printdebug(fi, "foreign identity assign ri %d tei %d",
ri, tei);
l2 = findtei(tm->mgr, tei);
if (l2) { /* same tei is in use */
if (ri != l2->tm->ri) { /* and it wasn't our request */
tm->tei_m.printdebug(fi,
"possible duplicate assignment tei %d", tei);
mISDN_FsmEvent(&l2->tm->tei_m, EV_VERIFY, NULL);
}
}
}
static void
tei_id_denied(struct FsmInst *fi, int event, void *arg)
{
struct teimgr *tm = fi->userdata;
u_char *dp = arg;
int ri, tei;
ri = ((unsigned int) *dp++ << 8);
ri += *dp++;
dp++;
tei = *dp >> 1;
if (*debug & DEBUG_L2_TEI)
tm->tei_m.printdebug(fi, "identity denied ri %d tei %d",
ri, tei);
}
static void
tei_id_chk_req(struct FsmInst *fi, int event, void *arg)
{
struct teimgr *tm = fi->userdata;
u_char *dp = arg;
int tei;
tei = *(dp + 3) >> 1;
if (*debug & DEBUG_L2_TEI)
tm->tei_m.printdebug(fi, "identity check req tei %d", tei);
if ((tm->l2->tei != GROUP_TEI) && ((tei == GROUP_TEI) ||
(tei == tm->l2->tei))) {
mISDN_FsmDelTimer(&tm->timer, 4);
mISDN_FsmChangeState(&tm->tei_m, ST_TEI_NOP);
put_tei_msg(tm->mgr, ID_CHK_RES, random_ri(), tm->l2->tei);
}
}
static void
tei_id_remove(struct FsmInst *fi, int event, void *arg)
{
struct teimgr *tm = fi->userdata;
u_char *dp = arg;
int tei;
tei = *(dp + 3) >> 1;
if (*debug & DEBUG_L2_TEI)
tm->tei_m.printdebug(fi, "identity remove tei %d", tei);
if ((tm->l2->tei != GROUP_TEI) &&
((tei == GROUP_TEI) || (tei == tm->l2->tei))) {
mISDN_FsmDelTimer(&tm->timer, 5);
mISDN_FsmChangeState(&tm->tei_m, ST_TEI_NOP);
tei_l2(tm->l2, MDL_REMOVE_REQ, 0);
}
}
static void
tei_id_verify(struct FsmInst *fi, int event, void *arg)
{
struct teimgr *tm = fi->userdata;
if (*debug & DEBUG_L2_TEI)
tm->tei_m.printdebug(fi, "id verify request for tei %d",
tm->l2->tei);
put_tei_msg(tm->mgr, ID_VERIFY, 0, tm->l2->tei);
mISDN_FsmChangeState(&tm->tei_m, ST_TEI_IDVERIFY);
mISDN_FsmAddTimer(&tm->timer, tm->tval, EV_TIMER, NULL, 2);
tm->nval = 2;
}
static void
tei_id_req_tout(struct FsmInst *fi, int event, void *arg)
{
struct teimgr *tm = fi->userdata;
if (--tm->nval) {
tm->ri = random_ri();
if (*debug & DEBUG_L2_TEI)
tm->tei_m.printdebug(fi, "assign req(%d) ri %d",
4 - tm->nval, tm->ri);
put_tei_msg(tm->mgr, ID_REQUEST, tm->ri, GROUP_TEI);
mISDN_FsmAddTimer(&tm->timer, tm->tval, EV_TIMER, NULL, 3);
} else {
tm->tei_m.printdebug(fi, "assign req failed");
tei_l2(tm->l2, MDL_ERROR_RSP, 0);
mISDN_FsmChangeState(fi, ST_TEI_NOP);
}
}
static void
tei_id_ver_tout(struct FsmInst *fi, int event, void *arg)
{
struct teimgr *tm = fi->userdata;
if (--tm->nval) {
if (*debug & DEBUG_L2_TEI)
tm->tei_m.printdebug(fi,
"id verify req(%d) for tei %d",
3 - tm->nval, tm->l2->tei);
put_tei_msg(tm->mgr, ID_VERIFY, 0, tm->l2->tei);
mISDN_FsmAddTimer(&tm->timer, tm->tval, EV_TIMER, NULL, 4);
} else {
tm->tei_m.printdebug(fi, "verify req for tei %d failed",
tm->l2->tei);
tei_l2(tm->l2, MDL_REMOVE_REQ, 0);
mISDN_FsmChangeState(fi, ST_TEI_NOP);
}
}
static struct FsmNode TeiFnListUser[] =
{
{ST_TEI_NOP, EV_IDREQ, tei_id_request},
{ST_TEI_NOP, EV_ASSIGN, tei_id_test_dup},
{ST_TEI_NOP, EV_VERIFY, tei_id_verify},
{ST_TEI_NOP, EV_REMOVE, tei_id_remove},
{ST_TEI_NOP, EV_CHKREQ, tei_id_chk_req},
{ST_TEI_IDREQ, EV_TIMER, tei_id_req_tout},
{ST_TEI_IDREQ, EV_ASSIGN, tei_id_assign},
{ST_TEI_IDREQ, EV_DENIED, tei_id_denied},
{ST_TEI_IDVERIFY, EV_TIMER, tei_id_ver_tout},
{ST_TEI_IDVERIFY, EV_REMOVE, tei_id_remove},
{ST_TEI_IDVERIFY, EV_CHKREQ, tei_id_chk_req},
};
static void
tei_l2remove(struct layer2 *l2)
{
put_tei_msg(l2->tm->mgr, ID_REMOVE, 0, l2->tei);
tei_l2(l2, MDL_REMOVE_REQ, 0);
list_del(&l2->ch.list);
l2->ch.ctrl(&l2->ch, CLOSE_CHANNEL, NULL);
}
static void
tei_assign_req(struct FsmInst *fi, int event, void *arg)
{
struct teimgr *tm = fi->userdata;
u_char *dp = arg;
if (tm->l2->tei == GROUP_TEI) {
tm->tei_m.printdebug(&tm->tei_m,
"net tei assign request without tei");
return;
}
tm->ri = ((unsigned int) *dp++ << 8);
tm->ri += *dp++;
if (*debug & DEBUG_L2_TEI)
tm->tei_m.printdebug(&tm->tei_m,
"net assign request ri %d teim %d", tm->ri, *dp);
put_tei_msg(tm->mgr, ID_ASSIGNED, tm->ri, tm->l2->tei);
mISDN_FsmChangeState(fi, ST_TEI_NOP);
}
static void
tei_id_chk_req_net(struct FsmInst *fi, int event, void *arg)
{
struct teimgr *tm = fi->userdata;
if (*debug & DEBUG_L2_TEI)
tm->tei_m.printdebug(fi, "id check request for tei %d",
tm->l2->tei);
tm->rcnt = 0;
put_tei_msg(tm->mgr, ID_CHK_REQ, 0, tm->l2->tei);
mISDN_FsmChangeState(&tm->tei_m, ST_TEI_IDVERIFY);
mISDN_FsmAddTimer(&tm->timer, tm->tval, EV_TIMER, NULL, 2);
tm->nval = 2;
}
static void
tei_id_chk_resp(struct FsmInst *fi, int event, void *arg)
{
struct teimgr *tm = fi->userdata;
u_char *dp = arg;
int tei;
tei = dp[3] >> 1;
if (*debug & DEBUG_L2_TEI)
tm->tei_m.printdebug(fi, "identity check resp tei %d", tei);
if (tei == tm->l2->tei)
tm->rcnt++;
}
static void
tei_id_verify_net(struct FsmInst *fi, int event, void *arg)
{
struct teimgr *tm = fi->userdata;
u_char *dp = arg;
int tei;
tei = dp[3] >> 1;
if (*debug & DEBUG_L2_TEI)
tm->tei_m.printdebug(fi, "identity verify req tei %d/%d",
tei, tm->l2->tei);
if (tei == tm->l2->tei)
tei_id_chk_req_net(fi, event, arg);
}
static void
tei_id_ver_tout_net(struct FsmInst *fi, int event, void *arg)
{
struct teimgr *tm = fi->userdata;
if (tm->rcnt == 1) {
if (*debug & DEBUG_L2_TEI)
tm->tei_m.printdebug(fi,
"check req for tei %d successful\n", tm->l2->tei);
mISDN_FsmChangeState(fi, ST_TEI_NOP);
} else if (tm->rcnt > 1) {
/* duplicate assignment; remove */
tei_l2remove(tm->l2);
} else if (--tm->nval) {
if (*debug & DEBUG_L2_TEI)
tm->tei_m.printdebug(fi,
"id check req(%d) for tei %d",
3 - tm->nval, tm->l2->tei);
put_tei_msg(tm->mgr, ID_CHK_REQ, 0, tm->l2->tei);
mISDN_FsmAddTimer(&tm->timer, tm->tval, EV_TIMER, NULL, 4);
} else {
tm->tei_m.printdebug(fi, "check req for tei %d failed",
tm->l2->tei);
mISDN_FsmChangeState(fi, ST_TEI_NOP);
tei_l2remove(tm->l2);
}
}
static struct FsmNode TeiFnListNet[] =
{
{ST_TEI_NOP, EV_ASSIGN_REQ, tei_assign_req},
{ST_TEI_NOP, EV_VERIFY, tei_id_verify_net},
{ST_TEI_NOP, EV_CHKREQ, tei_id_chk_req_net},
{ST_TEI_IDVERIFY, EV_TIMER, tei_id_ver_tout_net},
{ST_TEI_IDVERIFY, EV_CHKRESP, tei_id_chk_resp},
};
static void
tei_ph_data_ind(struct teimgr *tm, u_int mt, u_char *dp, int len)
{
if (test_bit(FLG_FIXED_TEI, &tm->l2->flag))
return;
if (*debug & DEBUG_L2_TEI)
tm->tei_m.printdebug(&tm->tei_m, "tei handler mt %x", mt);
if (mt == ID_ASSIGNED)
mISDN_FsmEvent(&tm->tei_m, EV_ASSIGN, dp);
else if (mt == ID_DENIED)
mISDN_FsmEvent(&tm->tei_m, EV_DENIED, dp);
else if (mt == ID_CHK_REQ)
mISDN_FsmEvent(&tm->tei_m, EV_CHKREQ, dp);
else if (mt == ID_REMOVE)
mISDN_FsmEvent(&tm->tei_m, EV_REMOVE, dp);
else if (mt == ID_VERIFY)
mISDN_FsmEvent(&tm->tei_m, EV_VERIFY, dp);
else if (mt == ID_CHK_RES)
mISDN_FsmEvent(&tm->tei_m, EV_CHKRESP, dp);
}
static struct layer2 *
create_new_tei(struct manager *mgr, int tei, int sapi)
{
unsigned long opt = 0;
unsigned long flags;
int id;
struct layer2 *l2;
struct channel_req rq;
if (!mgr->up)
return NULL;
if ((tei >= 0) && (tei < 64))
test_and_set_bit(OPTION_L2_FIXEDTEI, &opt);
if (mgr->ch.st->dev->Dprotocols & ((1 << ISDN_P_TE_E1) |
(1 << ISDN_P_NT_E1))) {
test_and_set_bit(OPTION_L2_PMX, &opt);
rq.protocol = ISDN_P_NT_E1;
} else {
rq.protocol = ISDN_P_NT_S0;
}
l2 = create_l2(mgr->up, ISDN_P_LAPD_NT, opt, tei, sapi);
if (!l2) {
printk(KERN_WARNING "%s:no memory for layer2\n", __func__);
return NULL;
}
l2->tm = kzalloc(sizeof(struct teimgr), GFP_KERNEL);
if (!l2->tm) {
kfree(l2);
printk(KERN_WARNING "%s:no memory for teimgr\n", __func__);
return NULL;
}
l2->tm->mgr = mgr;
l2->tm->l2 = l2;
l2->tm->tei_m.debug = *debug & DEBUG_L2_TEIFSM;
l2->tm->tei_m.userdata = l2->tm;
l2->tm->tei_m.printdebug = tei_debug;
l2->tm->tei_m.fsm = &teifsmn;
l2->tm->tei_m.state = ST_TEI_NOP;
l2->tm->tval = 2000; /* T202 2 sec */
mISDN_FsmInitTimer(&l2->tm->tei_m, &l2->tm->timer);
write_lock_irqsave(&mgr->lock, flags);
id = get_free_id(mgr);
list_add_tail(&l2->list, &mgr->layer2);
write_unlock_irqrestore(&mgr->lock, flags);
if (id < 0) {
l2->ch.ctrl(&l2->ch, CLOSE_CHANNEL, NULL);
printk(KERN_WARNING "%s:no free id\n", __func__);
return NULL;
} else {
l2->ch.nr = id;
__add_layer2(&l2->ch, mgr->ch.st);
l2->ch.recv = mgr->ch.recv;
l2->ch.peer = mgr->ch.peer;
l2->ch.ctrl(&l2->ch, OPEN_CHANNEL, NULL);
/* We need open here L1 for the manager as well (refcounting) */
rq.adr.dev = mgr->ch.st->dev->id;
id = mgr->ch.st->own.ctrl(&mgr->ch.st->own, OPEN_CHANNEL, &rq);
if (id < 0) {
printk(KERN_WARNING "%s: cannot open L1\n", __func__);
l2->ch.ctrl(&l2->ch, CLOSE_CHANNEL, NULL);
l2 = NULL;
}
}
return l2;
}
static void
new_tei_req(struct manager *mgr, u_char *dp)
{
int tei, ri;
struct layer2 *l2;
ri = dp[0] << 8;
ri += dp[1];
if (!mgr->up)
goto denied;
if (!(dp[3] & 1)) /* Extension bit != 1 */
goto denied;
if (dp[3] != 0xff)
tei = dp[3] >> 1; /* 3GPP TS 08.56 6.1.11.2 */
else
tei = get_free_tei(mgr);
if (tei < 0) {
printk(KERN_WARNING "%s:No free tei\n", __func__);
goto denied;
}
l2 = create_new_tei(mgr, tei, CTRL_SAPI);
if (!l2)
goto denied;
else
mISDN_FsmEvent(&l2->tm->tei_m, EV_ASSIGN_REQ, dp);
return;
denied:
put_tei_msg(mgr, ID_DENIED, ri, GROUP_TEI);
}
static int
ph_data_ind(struct manager *mgr, struct sk_buff *skb)
{
int ret = -EINVAL;
struct layer2 *l2, *nl2;
u_char mt;
if (skb->len < 8) {
if (*debug & DEBUG_L2_TEI)
printk(KERN_DEBUG "%s: short mgr frame %d/8\n",
__func__, skb->len);
goto done;
}
if ((skb->data[0] >> 2) != TEI_SAPI) /* not for us */
goto done;
if (skb->data[0] & 1) /* EA0 formal error */
goto done;
if (!(skb->data[1] & 1)) /* EA1 formal error */
goto done;
if ((skb->data[1] >> 1) != GROUP_TEI) /* not for us */
goto done;
if ((skb->data[2] & 0xef) != UI) /* not UI */
goto done;
if (skb->data[3] != TEI_ENTITY_ID) /* not tei entity */
goto done;
mt = skb->data[6];
switch (mt) {
case ID_REQUEST:
case ID_CHK_RES:
case ID_VERIFY:
if (!test_bit(MGR_OPT_NETWORK, &mgr->options))
goto done;
break;
case ID_ASSIGNED:
case ID_DENIED:
case ID_CHK_REQ:
case ID_REMOVE:
if (test_bit(MGR_OPT_NETWORK, &mgr->options))
goto done;
break;
default:
goto done;
}
ret = 0;
if (mt == ID_REQUEST) {
new_tei_req(mgr, &skb->data[4]);
goto done;
}
list_for_each_entry_safe(l2, nl2, &mgr->layer2, list) {
tei_ph_data_ind(l2->tm, mt, &skb->data[4], skb->len - 4);
}
done:
return ret;
}
int
l2_tei(struct layer2 *l2, u_int cmd, u_long arg)
{
struct teimgr *tm = l2->tm;
if (test_bit(FLG_FIXED_TEI, &l2->flag))
return 0;
if (*debug & DEBUG_L2_TEI)
printk(KERN_DEBUG "%s: cmd(%x)\n", __func__, cmd);
switch (cmd) {
case MDL_ASSIGN_IND:
mISDN_FsmEvent(&tm->tei_m, EV_IDREQ, NULL);
break;
case MDL_ERROR_IND:
if (test_bit(MGR_OPT_NETWORK, &tm->mgr->options))
mISDN_FsmEvent(&tm->tei_m, EV_CHKREQ, &l2->tei);
if (test_bit(MGR_OPT_USER, &tm->mgr->options))
mISDN_FsmEvent(&tm->tei_m, EV_VERIFY, NULL);
break;
case MDL_STATUS_UP_IND:
if (test_bit(MGR_OPT_NETWORK, &tm->mgr->options))
mISDN_FsmEvent(&tm->mgr->deact, EV_ACTIVATE, NULL);
break;
case MDL_STATUS_DOWN_IND:
if (test_bit(MGR_OPT_NETWORK, &tm->mgr->options))
mISDN_FsmEvent(&tm->mgr->deact, EV_DEACTIVATE, NULL);
break;
case MDL_STATUS_UI_IND:
if (test_bit(MGR_OPT_NETWORK, &tm->mgr->options))
mISDN_FsmEvent(&tm->mgr->deact, EV_UI, NULL);
break;
}
return 0;
}
void
TEIrelease(struct layer2 *l2)
{
struct teimgr *tm = l2->tm;
u_long flags;
mISDN_FsmDelTimer(&tm->timer, 1);
write_lock_irqsave(&tm->mgr->lock, flags);
list_del(&l2->list);
write_unlock_irqrestore(&tm->mgr->lock, flags);
l2->tm = NULL;
kfree(tm);
}
static int
create_teimgr(struct manager *mgr, struct channel_req *crq)
{
struct layer2 *l2;
unsigned long opt = 0;
unsigned long flags;
int id;
struct channel_req l1rq;
if (*debug & DEBUG_L2_TEI)
printk(KERN_DEBUG "%s: %s proto(%x) adr(%d %d %d %d)\n",
__func__, dev_name(&mgr->ch.st->dev->dev),
crq->protocol, crq->adr.dev, crq->adr.channel,
crq->adr.sapi, crq->adr.tei);
if (crq->adr.tei > GROUP_TEI)
return -EINVAL;
if (crq->adr.tei < 64)
test_and_set_bit(OPTION_L2_FIXEDTEI, &opt);
if (crq->adr.tei == 0)
test_and_set_bit(OPTION_L2_PTP, &opt);
if (test_bit(MGR_OPT_NETWORK, &mgr->options)) {
if (crq->protocol == ISDN_P_LAPD_TE)
return -EPROTONOSUPPORT;
if ((crq->adr.tei != 0) && (crq->adr.tei != 127))
return -EINVAL;
if (mgr->up) {
printk(KERN_WARNING
"%s: only one network manager is allowed\n",
__func__);
return -EBUSY;
}
} else if (test_bit(MGR_OPT_USER, &mgr->options)) {
if (crq->protocol == ISDN_P_LAPD_NT)
return -EPROTONOSUPPORT;
if ((crq->adr.tei >= 64) && (crq->adr.tei < GROUP_TEI))
return -EINVAL; /* dyn tei */
} else {
if (crq->protocol == ISDN_P_LAPD_NT)
test_and_set_bit(MGR_OPT_NETWORK, &mgr->options);
if (crq->protocol == ISDN_P_LAPD_TE)
test_and_set_bit(MGR_OPT_USER, &mgr->options);
}
l1rq.adr = crq->adr;
if (mgr->ch.st->dev->Dprotocols
& ((1 << ISDN_P_TE_E1) | (1 << ISDN_P_NT_E1)))
test_and_set_bit(OPTION_L2_PMX, &opt);
if ((crq->protocol == ISDN_P_LAPD_NT) && (crq->adr.tei == 127)) {
mgr->up = crq->ch;
id = DL_INFO_L2_CONNECT;
teiup_create(mgr, DL_INFORMATION_IND, sizeof(id), &id);
if (test_bit(MGR_PH_ACTIVE, &mgr->options))
teiup_create(mgr, PH_ACTIVATE_IND, 0, NULL);
crq->ch = NULL;
if (!list_empty(&mgr->layer2)) {
read_lock_irqsave(&mgr->lock, flags);
list_for_each_entry(l2, &mgr->layer2, list) {
l2->up = mgr->up;
l2->ch.ctrl(&l2->ch, OPEN_CHANNEL, NULL);
}
read_unlock_irqrestore(&mgr->lock, flags);
}
return 0;
}
l2 = create_l2(crq->ch, crq->protocol, opt,
crq->adr.tei, crq->adr.sapi);
if (!l2)
return -ENOMEM;
l2->tm = kzalloc(sizeof(struct teimgr), GFP_KERNEL);
if (!l2->tm) {
kfree(l2);
printk(KERN_ERR "kmalloc teimgr failed\n");
return -ENOMEM;
}
l2->tm->mgr = mgr;
l2->tm->l2 = l2;
l2->tm->tei_m.debug = *debug & DEBUG_L2_TEIFSM;
l2->tm->tei_m.userdata = l2->tm;
l2->tm->tei_m.printdebug = tei_debug;
if (crq->protocol == ISDN_P_LAPD_TE) {
l2->tm->tei_m.fsm = &teifsmu;
l2->tm->tei_m.state = ST_TEI_NOP;
l2->tm->tval = 1000; /* T201 1 sec */
if (test_bit(OPTION_L2_PMX, &opt))
l1rq.protocol = ISDN_P_TE_E1;
else
l1rq.protocol = ISDN_P_TE_S0;
} else {
l2->tm->tei_m.fsm = &teifsmn;
l2->tm->tei_m.state = ST_TEI_NOP;
l2->tm->tval = 2000; /* T202 2 sec */
if (test_bit(OPTION_L2_PMX, &opt))
l1rq.protocol = ISDN_P_NT_E1;
else
l1rq.protocol = ISDN_P_NT_S0;
}
mISDN_FsmInitTimer(&l2->tm->tei_m, &l2->tm->timer);
write_lock_irqsave(&mgr->lock, flags);
id = get_free_id(mgr);
list_add_tail(&l2->list, &mgr->layer2);
write_unlock_irqrestore(&mgr->lock, flags);
if (id >= 0) {
l2->ch.nr = id;
l2->up->nr = id;
crq->ch = &l2->ch;
/* We need open here L1 for the manager as well (refcounting) */
id = mgr->ch.st->own.ctrl(&mgr->ch.st->own, OPEN_CHANNEL,
&l1rq);
}
if (id < 0)
l2->ch.ctrl(&l2->ch, CLOSE_CHANNEL, NULL);
return id;
}
static int
mgr_send(struct mISDNchannel *ch, struct sk_buff *skb)
{
struct manager *mgr;
struct mISDNhead *hh = mISDN_HEAD_P(skb);
int ret = -EINVAL;
mgr = container_of(ch, struct manager, ch);
if (*debug & DEBUG_L2_RECV)
printk(KERN_DEBUG "%s: prim(%x) id(%x)\n",
__func__, hh->prim, hh->id);
switch (hh->prim) {
case PH_DATA_IND:
mISDN_FsmEvent(&mgr->deact, EV_UI, NULL);
ret = ph_data_ind(mgr, skb);
break;
case PH_DATA_CNF:
do_ack(mgr, hh->id);
ret = 0;
break;
case PH_ACTIVATE_IND:
test_and_set_bit(MGR_PH_ACTIVE, &mgr->options);
if (mgr->up)
teiup_create(mgr, PH_ACTIVATE_IND, 0, NULL);
mISDN_FsmEvent(&mgr->deact, EV_ACTIVATE_IND, NULL);
do_send(mgr);
ret = 0;
break;
case PH_DEACTIVATE_IND:
test_and_clear_bit(MGR_PH_ACTIVE, &mgr->options);
if (mgr->up)
teiup_create(mgr, PH_DEACTIVATE_IND, 0, NULL);
mISDN_FsmEvent(&mgr->deact, EV_DEACTIVATE_IND, NULL);
ret = 0;
break;
case DL_UNITDATA_REQ:
return dl_unit_data(mgr, skb);
}
if (!ret)
dev_kfree_skb(skb);
return ret;
}
static int
free_teimanager(struct manager *mgr)
{
struct layer2 *l2, *nl2;
test_and_clear_bit(OPTION_L1_HOLD, &mgr->options);
if (test_bit(MGR_OPT_NETWORK, &mgr->options)) {
/* not locked lock is taken in release tei */
mgr->up = NULL;
if (test_bit(OPTION_L2_CLEANUP, &mgr->options)) {
list_for_each_entry_safe(l2, nl2, &mgr->layer2, list) {
put_tei_msg(mgr, ID_REMOVE, 0, l2->tei);
mutex_lock(&mgr->ch.st->lmutex);
list_del(&l2->ch.list);
mutex_unlock(&mgr->ch.st->lmutex);
l2->ch.ctrl(&l2->ch, CLOSE_CHANNEL, NULL);
}
test_and_clear_bit(MGR_OPT_NETWORK, &mgr->options);
} else {
list_for_each_entry_safe(l2, nl2, &mgr->layer2, list) {
l2->up = NULL;
}
}
}
if (test_bit(MGR_OPT_USER, &mgr->options)) {
if (list_empty(&mgr->layer2))
test_and_clear_bit(MGR_OPT_USER, &mgr->options);
}
mgr->ch.st->dev->D.ctrl(&mgr->ch.st->dev->D, CLOSE_CHANNEL, NULL);
return 0;
}
static int
ctrl_teimanager(struct manager *mgr, void *arg)
{
/* currently we only have one option */
int *val = (int *)arg;
int ret = 0;
switch (val[0]) {
case IMCLEAR_L2:
if (val[1])
test_and_set_bit(OPTION_L2_CLEANUP, &mgr->options);
else
test_and_clear_bit(OPTION_L2_CLEANUP, &mgr->options);
break;
case IMHOLD_L1:
if (val[1])
test_and_set_bit(OPTION_L1_HOLD, &mgr->options);
else
test_and_clear_bit(OPTION_L1_HOLD, &mgr->options);
break;
default:
ret = -EINVAL;
}
return ret;
}
/* This function does create a L2 for fixed TEI in NT Mode */
static int
check_data(struct manager *mgr, struct sk_buff *skb)
{
struct mISDNhead *hh = mISDN_HEAD_P(skb);
int ret, tei, sapi;
struct layer2 *l2;
if (*debug & DEBUG_L2_CTRL)
printk(KERN_DEBUG "%s: prim(%x) id(%x)\n",
__func__, hh->prim, hh->id);
if (test_bit(MGR_OPT_USER, &mgr->options))
return -ENOTCONN;
if (hh->prim != PH_DATA_IND)
return -ENOTCONN;
if (skb->len != 3)
return -ENOTCONN;
if (skb->data[0] & 3) /* EA0 and CR must be 0 */
return -EINVAL;
sapi = skb->data[0] >> 2;
if (!(skb->data[1] & 1)) /* invalid EA1 */
return -EINVAL;
tei = skb->data[1] >> 1;
if (tei > 63) /* not a fixed tei */
return -ENOTCONN;
if ((skb->data[2] & ~0x10) != SABME)
return -ENOTCONN;
/* We got a SABME for a fixed TEI */
if (*debug & DEBUG_L2_CTRL)
printk(KERN_DEBUG "%s: SABME sapi(%d) tei(%d)\n",
__func__, sapi, tei);
l2 = create_new_tei(mgr, tei, sapi);
if (!l2) {
if (*debug & DEBUG_L2_CTRL)
printk(KERN_DEBUG "%s: failed to create new tei\n",
__func__);
return -ENOMEM;
}
ret = l2->ch.send(&l2->ch, skb);
return ret;
}
void
delete_teimanager(struct mISDNchannel *ch)
{
struct manager *mgr;
struct layer2 *l2, *nl2;
mgr = container_of(ch, struct manager, ch);
/* not locked lock is taken in release tei */
list_for_each_entry_safe(l2, nl2, &mgr->layer2, list) {
mutex_lock(&mgr->ch.st->lmutex);
list_del(&l2->ch.list);
mutex_unlock(&mgr->ch.st->lmutex);
l2->ch.ctrl(&l2->ch, CLOSE_CHANNEL, NULL);
}
list_del(&mgr->ch.list);
list_del(&mgr->bcast.list);
skb_queue_purge(&mgr->sendq);
kfree(mgr);
}
static int
mgr_ctrl(struct mISDNchannel *ch, u_int cmd, void *arg)
{
struct manager *mgr;
int ret = -EINVAL;
mgr = container_of(ch, struct manager, ch);
if (*debug & DEBUG_L2_CTRL)
printk(KERN_DEBUG "%s(%x, %p)\n", __func__, cmd, arg);
switch (cmd) {
case OPEN_CHANNEL:
ret = create_teimgr(mgr, arg);
break;
case CLOSE_CHANNEL:
ret = free_teimanager(mgr);
break;
case CONTROL_CHANNEL:
ret = ctrl_teimanager(mgr, arg);
break;
case CHECK_DATA:
ret = check_data(mgr, arg);
break;
}
return ret;
}
static int
mgr_bcast(struct mISDNchannel *ch, struct sk_buff *skb)
{
struct manager *mgr = container_of(ch, struct manager, bcast);
struct mISDNhead *hhc, *hh = mISDN_HEAD_P(skb);
struct sk_buff *cskb = NULL;
struct layer2 *l2;
u_long flags;
int ret;
read_lock_irqsave(&mgr->lock, flags);
list_for_each_entry(l2, &mgr->layer2, list) {
if ((hh->id & MISDN_ID_SAPI_MASK) ==
(l2->ch.addr & MISDN_ID_SAPI_MASK)) {
if (list_is_last(&l2->list, &mgr->layer2)) {
cskb = skb;
skb = NULL;
} else {
if (!cskb)
cskb = skb_copy(skb, GFP_ATOMIC);
}
if (cskb) {
hhc = mISDN_HEAD_P(cskb);
/* save original header behind normal header */
hhc++;
*hhc = *hh;
hhc--;
hhc->prim = DL_INTERN_MSG;
hhc->id = l2->ch.nr;
ret = ch->st->own.recv(&ch->st->own, cskb);
if (ret) {
if (*debug & DEBUG_SEND_ERR)
printk(KERN_DEBUG
"%s ch%d prim(%x) addr(%x)"
" err %d\n",
__func__, l2->ch.nr,
hh->prim, l2->ch.addr, ret);
} else
cskb = NULL;
} else {
printk(KERN_WARNING "%s ch%d addr %x no mem\n",
__func__, ch->nr, ch->addr);
goto out;
}
}
}
out:
read_unlock_irqrestore(&mgr->lock, flags);
if (cskb)
dev_kfree_skb(cskb);
if (skb)
dev_kfree_skb(skb);
return 0;
}
static int
mgr_bcast_ctrl(struct mISDNchannel *ch, u_int cmd, void *arg)
{
return -EINVAL;
}
int
create_teimanager(struct mISDNdevice *dev)
{
struct manager *mgr;
mgr = kzalloc(sizeof(struct manager), GFP_KERNEL);
if (!mgr)
return -ENOMEM;
INIT_LIST_HEAD(&mgr->layer2);
rwlock_init(&mgr->lock);
skb_queue_head_init(&mgr->sendq);
mgr->nextid = 1;
mgr->lastid = MISDN_ID_NONE;
mgr->ch.send = mgr_send;
mgr->ch.ctrl = mgr_ctrl;
mgr->ch.st = dev->D.st;
set_channel_address(&mgr->ch, TEI_SAPI, GROUP_TEI);
add_layer2(&mgr->ch, dev->D.st);
mgr->bcast.send = mgr_bcast;
mgr->bcast.ctrl = mgr_bcast_ctrl;
mgr->bcast.st = dev->D.st;
set_channel_address(&mgr->bcast, 0, GROUP_TEI);
add_layer2(&mgr->bcast, dev->D.st);
mgr->deact.debug = *debug & DEBUG_MANAGER;
mgr->deact.userdata = mgr;
mgr->deact.printdebug = da_debug;
mgr->deact.fsm = &deactfsm;
mgr->deact.state = ST_L1_DEACT;
mISDN_FsmInitTimer(&mgr->deact, &mgr->datimer);
dev->teimgr = &mgr->ch;
return 0;
}
int TEIInit(u_int *deb)
{
debug = deb;
teifsmu.state_count = TEI_STATE_COUNT;
teifsmu.event_count = TEI_EVENT_COUNT;
teifsmu.strEvent = strTeiEvent;
teifsmu.strState = strTeiState;
mISDN_FsmNew(&teifsmu, TeiFnListUser, ARRAY_SIZE(TeiFnListUser));
teifsmn.state_count = TEI_STATE_COUNT;
teifsmn.event_count = TEI_EVENT_COUNT;
teifsmn.strEvent = strTeiEvent;
teifsmn.strState = strTeiState;
mISDN_FsmNew(&teifsmn, TeiFnListNet, ARRAY_SIZE(TeiFnListNet));
deactfsm.state_count = DEACT_STATE_COUNT;
deactfsm.event_count = DEACT_EVENT_COUNT;
deactfsm.strEvent = strDeactEvent;
deactfsm.strState = strDeactState;
mISDN_FsmNew(&deactfsm, DeactFnList, ARRAY_SIZE(DeactFnList));
return 0;
}
void TEIFree(void)
{
mISDN_FsmFree(&teifsmu);
mISDN_FsmFree(&teifsmn);
mISDN_FsmFree(&deactfsm);
}
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