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Commit 4e339dac authored by Kai Germaschewski's avatar Kai Germaschewski
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ISDN: Move call control to isdn_net_lib.c 

No code change, just move the call control state machine from
isdn_net.c to isdn_net_lib.c
parent 26cc438c
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Inline Side-by-side
Showing with 606 additions and 604 deletions
drivers/isdn/i4l/isdn_net.c
View file @ 4e339dac
......@@ -33,28 +33,6 @@
#include "isdn_concap.h"
#include "isdn_ciscohdlck.h"
enum {
ST_NULL,
ST_OUT_WAIT_DCONN,
ST_OUT_WAIT_BCONN,
ST_IN_WAIT_DCONN,
ST_IN_WAIT_BCONN,
ST_ACTIVE,
ST_WAIT_BEFORE_CB,
ST_OUT_DIAL_WAIT,
};
/* keep clear of ISDN_CMD_* and ISDN_STAT_* */
enum {
EV_NET_DIAL = 0x200,
EV_NET_TIMER_INCOMING = 0x201,
EV_NET_TIMER_DIAL = 0x203,
EV_NET_TIMER_DIAL_WAIT = 0x204,
EV_NET_TIMER_CB_OUT = 0x205,
EV_NET_TIMER_CB_IN = 0x206,
EV_NET_TIMER_HUP = 0x207,
};
/*
* Outline of new tbusy handling:
*
......@@ -153,30 +131,24 @@ void isdn_net_zero_frame_cnt(isdn_net_dev *idev)
atomic_set(&idev->frame_cnt, 0);
}
/* For 2.2.x we leave the transmitter busy timeout at 2 secs, just
* to be safe.
* For 2.3.x we push it up to 20 secs, because call establishment
* (in particular callback) may take such a long time, and we
* don't want confusing messages in the log. However, there is a slight
* possibility that this large timeout will break other things like MPPP,
* which might rely on the tx timeout. If so, we'll find out this way...
*/
int isdn_net_online(isdn_net_dev *idev)
{
return idev->dialstate == ST_ACTIVE;
}
/* Prototypes */
static int do_dialout(isdn_net_dev *idev);
int isdn_net_handle_event(isdn_net_dev *idev, int pr, void *arg);
char *isdn_net_revision = "$Revision: 1.140.6.11 $";
/*
* Code for raw-networking over ISDN
*/
/* A packet has successfully been sent out. */
int
isdn_net_bsent(isdn_net_dev *idev, isdn_ctrl *c)
{
isdn_net_local *mlp = idev->mlp;
isdn_net_dec_frame_cnt(idev);
mlp->stats.tx_packets++;
mlp->stats.tx_bytes += c->parm.length;
return 1;
}
static void
isdn_net_unreachable(struct net_device *dev, struct sk_buff *skb, char *reason)
......@@ -191,64 +163,6 @@ isdn_net_unreachable(struct net_device *dev, struct sk_buff *skb, char *reason)
dst_link_failure(skb);
}
/*
* unbind a net-interface (resets interface after an error)
*/
static void
isdn_net_unbind_channel(isdn_net_dev *idev)
{
isdn_net_local *mlp = idev->mlp;
ulong flags;
save_flags(flags);
cli();
if (idev->isdn_slot < 0) {
isdn_BUG();
return;
}
if (mlp->ops->unbind)
mlp->ops->unbind(idev);
skb_queue_purge(&idev->super_tx_queue);
idev->dialstate = ST_NULL;
isdn_slot_set_idev(idev->isdn_slot, NULL);
isdn_slot_free(idev->isdn_slot, ISDN_USAGE_NET);
idev->isdn_slot = -1;
restore_flags(flags);
}
/*
* Assign an ISDN-channel to a net-interface
*/
static int
isdn_net_bind_channel(isdn_net_dev *idev, int idx)
{
isdn_net_local *mlp = idev->mlp;
int retval = 0;
unsigned long flags;
save_flags(flags);
cli();
idev->isdn_slot = idx;
isdn_slot_set_idev(idev->isdn_slot, idev);
if (mlp->ops->bind)
retval = mlp->ops->bind(idev);
if (retval < 0)
isdn_net_unbind_channel(idev);
restore_flags(flags);
return retval;
}
/*
* Handle status-messages from ISDN-interfacecard.
* This function is called from within the main-status-dispatcher
......@@ -268,408 +182,6 @@ isdn_net_stat_callback(int idx, isdn_ctrl *c)
return isdn_net_handle_event(idev, c->command, c);
}
/* ---------------------------------------------------------------------- */
/* call management */
/* ---------------------------------------------------------------------- */
/* Find the idev->dial'th outgoing number. */
static struct isdn_net_phone *
get_outgoing_phone(isdn_net_dev *idev)
{
isdn_net_local *mlp = idev->mlp;
struct isdn_net_phone *phone;
int i = 0;
list_for_each_entry(phone, &mlp->phone[1], list) {
if (i++ == idev->dial)
return phone;
}
return NULL;
}
/* Initiate dialout. */
static int
init_dialout(isdn_net_dev *idev)
{
isdn_net_local *mlp = idev->mlp;
if (ISDN_NET_DIALMODE(*mlp) == ISDN_NET_DM_OFF)
return 1;
if (list_empty(&mlp->phone[1]))
return 1;
idev->dial = 0;
idev->dialretry = 0;
return do_dialout(idev);
}
/* Try dialing the next number. */
static int
do_dialout(isdn_net_dev *idev)
{
isdn_net_local *mlp = idev->mlp;
struct dial_info dial = {
.l2_proto = mlp->l2_proto,
.l3_proto = mlp->l3_proto,
.si1 = 7,
.si2 = 0,
.msn = mlp->msn,
.phone = get_outgoing_phone(idev)->num,
};
/* next time, try next number */
idev->dial++;
idev->outgoing = 1;
if (idev->chargeint)
idev->charge_state = ST_CHARGE_HAVE_CINT;
else
idev->charge_state = ST_CHARGE_NULL;
/* For outgoing callback, use cbdelay instead of dialtimeout */
if (mlp->cbdelay && (mlp->flags & ISDN_NET_CBOUT)) {
idev->dial_timer.expires = jiffies + mlp->cbdelay;
idev->dial_event = EV_NET_TIMER_CB_OUT;
} else {
idev->dial_timer.expires = jiffies + mlp->dialtimeout;
idev->dial_event = EV_NET_TIMER_DIAL;
}
idev->dialstate = ST_OUT_WAIT_DCONN;
add_timer(&idev->dial_timer);
/* Dial */
isdn_slot_dial(idev->isdn_slot, &dial);
return 1;
}
/* If we didn't connect within dialtimeout, we give up for now
* and wait for dialwait jiffies before trying again.
*/
static int
dial_timeout(isdn_net_dev *idev)
{
isdn_net_local *mlp = idev->mlp;
isdn_ctrl cmd;
idev->dialstate = ST_OUT_DIAL_WAIT;
isdn_slot_command(idev->isdn_slot, ISDN_CMD_HANGUP, &cmd);
/* get next phone number */
if (!get_outgoing_phone(idev)) {
/* otherwise start over at first entry */
idev->dial = 0;
idev->dialretry++;
}
if (idev->dialretry >= mlp->dialmax) {
isdn_net_hangup(idev);
return 1;
}
idev->dial_event = EV_NET_TIMER_DIAL_WAIT;
mod_timer(&idev->dial_timer, jiffies + mlp->dialwait);
return 1;
}
static int
isdn_net_connect_failure(isdn_net_dev *idev)
{
del_timer(&idev->dial_timer);
isdn_slot_all_eaz(idev->isdn_slot);
printk(KERN_INFO "%s: connection failed\n", idev->name);
isdn_net_unbind_channel(idev);
return 1;
}
static int
isdn_net_out_dconn(isdn_net_dev *idev)
{
isdn_ctrl cmd;
idev->dialstate = ST_OUT_WAIT_BCONN;
isdn_slot_command(idev->isdn_slot, ISDN_CMD_ACCEPTB, &cmd);
return 1;
}
static int
isdn_net_in_dconn(isdn_net_dev *idev)
{
isdn_ctrl cmd;
idev->dialstate = ST_IN_WAIT_BCONN;
isdn_slot_command(idev->isdn_slot, ISDN_CMD_ACCEPTB, &cmd);
return 1;
}
static int
isdn_net_bconn(isdn_net_dev *idev)
{
isdn_net_local *mlp = idev->mlp;
idev->dialstate = ST_ACTIVE;
if (mlp->onhtime) {
idev->huptimer = 0;
idev->dial_event = EV_NET_TIMER_HUP;
mod_timer(&idev->dial_timer, jiffies + HZ);
} else {
del_timer(&idev->dial_timer);
}
isdn_net_add_to_bundle(mlp, idev);
printk(KERN_INFO "isdn_net: %s connected\n", idev->name);
/* If first Chargeinfo comes before B-Channel connect,
* we correct the timestamp here.
*/
idev->chargetime = jiffies;
idev->transcount = 0;
idev->cps = 0;
idev->last_jiffies = jiffies;
if (mlp->ops->connected)
mlp->ops->connected(idev);
else
isdn_net_dev_wake_queue(idev);
return 1;
}
/* Check if it's time for idle hang-up */
static int
isdn_net_check_hup(isdn_net_dev *idev)
{
isdn_net_local *mlp = idev->mlp;
dbg_net_dial("%s: huptimer %d onhtime %d chargetime %ld chargeint %d\n",
idev->name, idev->huptimer, mlp->onhtime, idev->chargetime, idev->chargeint);
if (idev->huptimer++ <= mlp->onhtime)
goto mod_timer;
if (mlp->hupflags & ISDN_CHARGEHUP &&
idev->charge_state == ST_CHARGE_HAVE_CINT) {
if (!time_after(jiffies, idev->chargetime
+ idev->chargeint - 2 * HZ))
goto mod_timer;
}
if (idev->outgoing || mlp->hupflags & ISDN_INHUP)
return isdn_net_hangup(idev);
mod_timer:
mod_timer(&idev->dial_timer, idev->dial_timer.expires + HZ);
return 1;
}
/* A packet has successfully been sent out. */
static int
isdn_net_bsent(isdn_net_dev *idev, isdn_ctrl *c)
{
isdn_net_local *mlp = idev->mlp;
isdn_net_dec_frame_cnt(idev);
mlp->stats.tx_packets++;
mlp->stats.tx_bytes += c->parm.length;
return 1;
}
/* Charge-info from TelCo. */
static int
isdn_net_cinf(isdn_net_dev *idev)
{
idev->charge++;
switch (idev->charge_state) {
case ST_CHARGE_NULL:
idev->charge_state = ST_CHARGE_GOT_CINF;
break;
case ST_CHARGE_GOT_CINF:
idev->charge_state = ST_CHARGE_HAVE_CINT;
/* fall through */
case ST_CHARGE_HAVE_CINT:
idev->chargeint = jiffies - idev->chargetime;
break;
}
idev->chargetime = jiffies;
dbg_net_dial("%s: got CINF\n", idev->name);
return 1;
}
static int
isdn_net_disconnected(isdn_net_dev *idev)
{
isdn_net_local *mlp = idev->mlp;
del_timer(&idev->dial_timer);
if (mlp->ops->disconnected)
mlp->ops->disconnected(idev);
isdn_net_rm_from_bundle(idev);
printk(KERN_INFO "%s: disconnected\n", idev->name);
printk(KERN_INFO "%s: Chargesum is %d\n", idev->name,
idev->charge);
isdn_slot_all_eaz(idev->isdn_slot);
isdn_net_unbind_channel(idev);
return 1;
}
/* Perform hangup for a net-interface. */
int
isdn_net_hangup(isdn_net_dev *idev)
{
isdn_ctrl cmd;
del_timer(&idev->dial_timer);
if (!isdn_net_bound(idev)) {
isdn_BUG();
return 1;
}
printk(KERN_INFO "%s: local hangup\n", idev->name);
isdn_slot_command(idev->isdn_slot, ISDN_CMD_HANGUP, &cmd);
return 1;
}
static int
isdn_net_event_out_wait_dconn(isdn_net_dev *idev, int pr, void *arg)
{
switch (pr) {
case EV_NET_TIMER_DIAL:
return dial_timeout(idev);
case EV_NET_TIMER_CB_OUT:
return isdn_net_hangup(idev);
case ISDN_STAT_DCONN:
return isdn_net_out_dconn(idev);
case ISDN_STAT_DHUP:
return isdn_net_connect_failure(idev);
}
isdn_BUG();
return 0;
}
static int
isdn_net_event_out_wait_bconn(isdn_net_dev *idev, int pr, void *arg)
{
switch (pr) {
case EV_NET_TIMER_DIAL:
return dial_timeout(idev);
case ISDN_STAT_BCONN:
return isdn_net_bconn(idev);
case ISDN_STAT_DHUP:
return isdn_net_connect_failure(idev);
}
isdn_BUG();
return 0;
}
static int
isdn_net_event_in_wait_dconn(isdn_net_dev *idev, int pr, void *arg)
{
switch (pr) {
case EV_NET_TIMER_INCOMING:
return isdn_net_hangup(idev);
case ISDN_STAT_DCONN:
return isdn_net_in_dconn(idev);
case ISDN_STAT_DHUP:
return isdn_net_connect_failure(idev);
}
isdn_BUG();
return 0;
}
static int
isdn_net_event_in_wait_bconn(isdn_net_dev *idev, int pr, void *arg)
{
switch (pr) {
case EV_NET_TIMER_INCOMING:
return isdn_net_hangup(idev);
case ISDN_STAT_BCONN:
return isdn_net_bconn(idev);
case ISDN_STAT_DHUP:
return isdn_net_connect_failure(idev);
}
isdn_BUG();
return 0;
}
static int
isdn_net_event_wait_before_cb(isdn_net_dev *idev, int pr, void *arg)
{
switch (pr) {
case EV_NET_TIMER_CB_IN:
return init_dialout(idev);
}
isdn_BUG();
return 0;
}
static int
isdn_net_event_active(isdn_net_dev *idev, int pr, void *arg)
{
switch (pr) {
case EV_NET_TIMER_HUP:
return isdn_net_check_hup(idev);
case ISDN_STAT_BSENT:
return isdn_net_bsent(idev, arg);
case ISDN_STAT_BHUP:
case ISDN_STAT_DHUP:
return isdn_net_disconnected(idev);
case ISDN_STAT_CINF:
return isdn_net_cinf(idev);
}
isdn_BUG();
return 0;
}
static int
isdn_net_event_dial_wait(isdn_net_dev *idev, int pr, void *arg)
{
switch (pr) {
case EV_NET_TIMER_DIAL_WAIT:
return do_dialout(idev);
}
isdn_BUG();
return 0;
}
/*
* For ISDN_STAT_*, returns 1 if event was for us
*/
int
isdn_net_handle_event(isdn_net_dev *idev, int pr, void *arg)
{
dbg_net_dial("%s: dialstate=%d pr=%#x\n", idev->name,
idev->dialstate, pr);
switch (idev->dialstate) {
case ST_ACTIVE:
return isdn_net_event_active(idev, pr, arg);
case ST_OUT_WAIT_DCONN:
return isdn_net_event_out_wait_dconn(idev, pr, arg);
case ST_OUT_WAIT_BCONN:
return isdn_net_event_out_wait_bconn(idev, pr, arg);
case ST_IN_WAIT_DCONN:
return isdn_net_event_in_wait_dconn(idev, pr, arg);
case ST_IN_WAIT_BCONN:
return isdn_net_event_in_wait_bconn(idev, pr, arg);
case ST_WAIT_BEFORE_CB:
return isdn_net_event_wait_before_cb(idev, pr, arg);
case ST_OUT_DIAL_WAIT:
return isdn_net_event_dial_wait(idev, pr, arg);
default:
isdn_BUG();
return 0;
}
}
static void
isdn_net_log_skb(struct sk_buff *skb, isdn_net_dev *idev)
{
......@@ -784,7 +296,7 @@ isdn_net_dial_slave(isdn_net_local *mlp)
list_for_each_entry(idev, &mlp->slaves, slaves) {
if (!isdn_net_bound(idev)) {
isdn_net_dev_dial(idev);
isdn_net_dial(idev);
break;
}
}
......@@ -870,7 +382,7 @@ isdn_net_autodial(struct sk_buff *skb, struct net_device *ndev)
if (ISDN_NET_DIALMODE(*mlp) != ISDN_NET_DM_AUTO)
goto discard;
if (isdn_net_dev_dial(idev) < 0)
if (isdn_net_dial(idev) < 0)
goto discard;
/* Log packet, which triggered dialing */
......@@ -929,47 +441,6 @@ isdn_net_rcv_skb(int idx, struct sk_buff *skb)
return 0;
}
static int
isdn_net_do_callback(isdn_net_dev *idev)
{
isdn_net_local *mlp = idev->mlp;
int slot;
/*
* Is the state MANUAL?
* If so, no callback can be made,
* so reject actively.
*/
if (ISDN_NET_DIALMODE(*mlp) == ISDN_NET_DM_OFF) {
printk(KERN_INFO "incoming call for callback, interface %s `off' -> rejected\n",
idev->name);
return 3;
}
printk(KERN_DEBUG "%s: start callback\n", idev->name);
/* Grab a free ISDN-Channel */
slot = isdn_get_free_slot(ISDN_USAGE_NET, mlp->l2_proto, mlp->l3_proto,
idev->pre_device, idev->pre_channel, mlp->msn);
if (slot < 0)
goto err;
isdn_slot_set_usage(slot, isdn_slot_usage(slot) | ISDN_USAGE_OUTGOING);
if (isdn_net_bind_channel(idev, slot) < 0)
goto err;
/* Setup dialstate. */
idev->dial_timer.expires = jiffies + mlp->cbdelay;
idev->dial_event = EV_NET_TIMER_CB_IN;
add_timer(&idev->dial_timer);
idev->dialstate = ST_WAIT_BEFORE_CB;
/* Initiate dialing by returning 2 or 4 */
return (mlp->flags & ISDN_NET_CBHUP) ? 2 : 4;
err:
return 0;
}
/*
* An incoming call-request has arrived.
* Search the interface-chain for an appropriate interface.
......@@ -998,7 +469,6 @@ isdn_net_find_icall(int di, int ch, int idx, setup_parm *setup)
ulong flags;
char nr[32];
char *my_eaz;
isdn_ctrl cmd;
int slot = isdn_dc2minor(di, ch);
/* Search name in netdev-chain */
......@@ -1118,26 +588,7 @@ isdn_net_find_icall(int di, int ch, int idx, setup_parm *setup)
printk(KERN_DEBUG "%s: call from %s -> %s accepted\n",
idev->name, nr, eaz);
strcpy(isdn_slot_num(idx), nr);
isdn_slot_set_usage(idx, (isdn_slot_usage(idx) & ISDN_USAGE_EXCLUSIVE) | ISDN_USAGE_NET);
isdn_net_bind_channel(idev, idx);
idev->outgoing = 0;
idev->charge_state = ST_CHARGE_NULL;
/* Got incoming Call, setup L2 and L3 protocols,
* then wait for D-Channel-connect
*/
cmd.arg = mlp->l2_proto << 8;
isdn_slot_command(idev->isdn_slot, ISDN_CMD_SETL2, &cmd);
cmd.arg = mlp->l3_proto << 8;
isdn_slot_command(idev->isdn_slot, ISDN_CMD_SETL3, &cmd);
idev->dial_timer.expires = jiffies + mlp->dialtimeout;
idev->dial_event = EV_NET_TIMER_INCOMING;
add_timer(&idev->dial_timer);
idev->dialstate = ST_IN_WAIT_DCONN;
isdn_net_accept(idev, idx, nr);
restore_flags(flags);
return 1;
}
......@@ -1147,41 +598,6 @@ isdn_net_find_icall(int di, int ch, int idx, setup_parm *setup)
return (match_more == 2) ? 5:0;
}
/*
* Trigger dialing out
*/
int
isdn_net_dev_dial(isdn_net_dev *idev)
{
int slot;
isdn_net_local *mlp = idev->mlp;
if (isdn_net_bound(idev))
return -EBUSY;
if (idev->exclusive >= 0)
slot = idev->exclusive;
else
slot = isdn_get_free_slot(ISDN_USAGE_NET, mlp->l2_proto,
mlp->l3_proto, idev->pre_device,
idev->pre_channel, mlp->msn);
if (slot < 0)
goto err;
isdn_slot_set_usage(slot, isdn_slot_usage(slot) | ISDN_USAGE_OUTGOING);
if (isdn_net_bind_channel(idev, slot) < 0)
goto err;
/* Initiate dialing */
init_dialout(idev);
return 0;
err:
return -EAGAIN;
}
/*
* This is called from certain upper protocol layers (multilink ppp
* and x25iface encapsulation module) that want to initiate dialing
......@@ -1195,7 +611,7 @@ isdn_net_dial_req(isdn_net_dev *idev)
if (ISDN_NET_DIALMODE(*mlp) != ISDN_NET_DM_AUTO)
return -EBUSY;
return isdn_net_dev_dial(idev);
return isdn_net_dial(idev);
}
// ISDN_NET_ENCAP_IPTYP
......
drivers/isdn/i4l/isdn_net.h
View file @ 4e339dac
......@@ -41,9 +41,16 @@ extern int register_isdn_netif(int encap, struct isdn_netif_ops *ops);
extern int isdn_net_autodial(struct sk_buff *skb, struct net_device *ndev);
extern int isdn_net_start_xmit(struct sk_buff *skb, struct net_device *ndev);
extern int isdn_net_bind_channel(isdn_net_dev *idev, int slot);
extern void isdn_net_unbind_channel(isdn_net_dev *idev);
extern int isdn_net_dial(isdn_net_dev *idev);
extern void isdn_net_accept(isdn_net_dev *idev, int slot, char *nr);
extern int isdn_net_do_callback(isdn_net_dev *idev);
extern int isdn_net_bsent(isdn_net_dev *idev, isdn_ctrl *c);
extern int isdn_net_stat_callback(int, isdn_ctrl *);
extern int isdn_net_find_icall(int, int, int, setup_parm *);
extern int isdn_net_dev_dial(isdn_net_dev *idev);
extern int isdn_net_hangup(isdn_net_dev *);
extern int isdn_net_rcv_skb(int, struct sk_buff *);
extern int isdn_net_dial_req(isdn_net_dev *);
......
drivers/isdn/i4l/isdn_net_lib.c
View file @ 4e339dac
......@@ -668,14 +668,14 @@ isdn_net_getphone(isdn_net_ioctl_phone * phone, char *phones)
* Force a net-interface to dial out.
*/
static int
isdn_net_dial(char *name)
isdn_net_dial_out(char *name)
{
isdn_net_dev *idev = isdn_net_findif(name);
if (!idev)
return -ENODEV;
return isdn_net_dev_dial(idev);
return isdn_net_dial(idev);
}
/*
......@@ -821,7 +821,7 @@ isdn_net_ioctl(struct inode *ino, struct file *file, uint cmd, ulong arg)
retval = -EFAULT;
break;
}
retval = isdn_net_dial(name);
retval = isdn_net_dial_out(name);
break;
case IIOCNETHUP: /* hangup */
if (copy_from_user(name, (char *) arg, sizeof(name))) {
......@@ -1016,6 +1016,38 @@ isdn_net_tasklet(unsigned long data)
}
/* ====================================================================== */
/* call control state machine */
/* ====================================================================== */
enum {
ST_NULL,
ST_OUT_WAIT_DCONN,
ST_OUT_WAIT_BCONN,
ST_IN_WAIT_DCONN,
ST_IN_WAIT_BCONN,
ST_ACTIVE,
ST_WAIT_BEFORE_CB,
ST_OUT_DIAL_WAIT,
};
/* keep clear of ISDN_CMD_* and ISDN_STAT_* */
enum {
EV_NET_DIAL = 0x200,
EV_NET_TIMER_INCOMING = 0x201,
EV_NET_TIMER_DIAL = 0x203,
EV_NET_TIMER_DIAL_WAIT = 0x204,
EV_NET_TIMER_CB_OUT = 0x205,
EV_NET_TIMER_CB_IN = 0x206,
EV_NET_TIMER_HUP = 0x207,
};
static int init_dialout(isdn_net_dev *idev);
static int do_dialout(isdn_net_dev *idev);
int isdn_net_online(isdn_net_dev *idev)
{
return idev->dialstate == ST_ACTIVE;
}
static void
isdn_net_dial_timer(unsigned long data)
......@@ -1025,3 +1057,550 @@ isdn_net_dial_timer(unsigned long data)
isdn_net_handle_event(idev, idev->dial_event, NULL);
}
/*
* Assign an ISDN-channel to a net-interface
*/
int
isdn_net_bind_channel(isdn_net_dev *idev, int slot)
{
isdn_net_local *mlp = idev->mlp;
int retval = 0;
unsigned long flags;
save_flags(flags);
cli();
idev->isdn_slot = slot;
isdn_slot_set_idev(idev->isdn_slot, idev);
if (mlp->ops->bind)
retval = mlp->ops->bind(idev);
if (retval < 0)
isdn_net_unbind_channel(idev);
restore_flags(flags);
return retval;
}
/*
* Unbind a net-interface
*/
void
isdn_net_unbind_channel(isdn_net_dev *idev)
{
isdn_net_local *mlp = idev->mlp;
ulong flags;
save_flags(flags);
cli();
if (idev->isdn_slot < 0) {
isdn_BUG();
return;
}
if (mlp->ops->unbind)
mlp->ops->unbind(idev);
skb_queue_purge(&idev->super_tx_queue);
idev->dialstate = ST_NULL;
isdn_slot_set_idev(idev->isdn_slot, NULL);
isdn_slot_free(idev->isdn_slot, ISDN_USAGE_NET);
idev->isdn_slot = -1;
restore_flags(flags);
}
int
isdn_net_dial(isdn_net_dev *idev)
{
int slot;
isdn_net_local *mlp = idev->mlp;
if (isdn_net_bound(idev))
return -EBUSY;
if (idev->exclusive >= 0)
slot = idev->exclusive;
else
slot = isdn_get_free_slot(ISDN_USAGE_NET, mlp->l2_proto,
mlp->l3_proto, idev->pre_device,
idev->pre_channel, mlp->msn);
if (slot < 0)
goto err;
isdn_slot_set_usage(slot, isdn_slot_usage(slot) | ISDN_USAGE_OUTGOING);
if (isdn_net_bind_channel(idev, slot) < 0)
goto err;
/* Initiate dialing */
init_dialout(idev);
return 0;
err:
return -EAGAIN;
}
void
isdn_net_accept(isdn_net_dev *idev, int slot, char *nr)
{
isdn_net_local *mlp = idev->mlp;
isdn_ctrl cmd;
strcpy(isdn_slot_num(slot), nr);
isdn_slot_set_usage(slot, (isdn_slot_usage(slot) & ISDN_USAGE_EXCLUSIVE) | ISDN_USAGE_NET);
isdn_net_bind_channel(idev, slot);
idev->outgoing = 0;
idev->charge_state = ST_CHARGE_NULL;
/* Got incoming Call, setup L2 and L3 protocols,
* then wait for D-Channel-connect
*/
cmd.arg = mlp->l2_proto << 8;
isdn_slot_command(idev->isdn_slot, ISDN_CMD_SETL2, &cmd);
cmd.arg = mlp->l3_proto << 8;
isdn_slot_command(idev->isdn_slot, ISDN_CMD_SETL3, &cmd);
idev->dial_timer.expires = jiffies + mlp->dialtimeout;
idev->dial_event = EV_NET_TIMER_INCOMING;
add_timer(&idev->dial_timer);
idev->dialstate = ST_IN_WAIT_DCONN;
}
int
isdn_net_do_callback(isdn_net_dev *idev)
{
isdn_net_local *mlp = idev->mlp;
int slot;
/*
* Is the state MANUAL?
* If so, no callback can be made,
* so reject actively.
*/
if (ISDN_NET_DIALMODE(*mlp) == ISDN_NET_DM_OFF) {
printk(KERN_INFO "incoming call for callback, interface %s `off' -> rejected\n",
idev->name);
return 3;
}
printk(KERN_DEBUG "%s: start callback\n", idev->name);
/* Grab a free ISDN-Channel */
slot = isdn_get_free_slot(ISDN_USAGE_NET, mlp->l2_proto, mlp->l3_proto,
idev->pre_device, idev->pre_channel, mlp->msn);
if (slot < 0)
goto err;
isdn_slot_set_usage(slot, isdn_slot_usage(slot) | ISDN_USAGE_OUTGOING);
if (isdn_net_bind_channel(idev, slot) < 0)
goto err;
/* Setup dialstate. */
idev->dial_timer.expires = jiffies + mlp->cbdelay;
idev->dial_event = EV_NET_TIMER_CB_IN;
add_timer(&idev->dial_timer);
idev->dialstate = ST_WAIT_BEFORE_CB;
/* Initiate dialing by returning 2 or 4 */
return (mlp->flags & ISDN_NET_CBHUP) ? 2 : 4;
err:
return 0;
}
/* ---------------------------------------------------------------------- */
/* callbacks in the state machine */
/* ---------------------------------------------------------------------- */
/* Find the idev->dial'th outgoing number. */
static struct isdn_net_phone *
get_outgoing_phone(isdn_net_dev *idev)
{
isdn_net_local *mlp = idev->mlp;
struct isdn_net_phone *phone;
int i = 0;
list_for_each_entry(phone, &mlp->phone[1], list) {
if (i++ == idev->dial)
return phone;
}
return NULL;
}
/* Initiate dialout. */
static int
init_dialout(isdn_net_dev *idev)
{
isdn_net_local *mlp = idev->mlp;
if (ISDN_NET_DIALMODE(*mlp) == ISDN_NET_DM_OFF)
return 1;
if (list_empty(&mlp->phone[1]))
return 1;
idev->dial = 0;
idev->dialretry = 0;
return do_dialout(idev);
}
/* Try dialing the next number. */
static int
do_dialout(isdn_net_dev *idev)
{
isdn_net_local *mlp = idev->mlp;
struct dial_info dial = {
.l2_proto = mlp->l2_proto,
.l3_proto = mlp->l3_proto,
.si1 = 7,
.si2 = 0,
.msn = mlp->msn,
.phone = get_outgoing_phone(idev)->num,
};
/* next time, try next number */
idev->dial++;
idev->outgoing = 1;
if (idev->chargeint)
idev->charge_state = ST_CHARGE_HAVE_CINT;
else
idev->charge_state = ST_CHARGE_NULL;
/* For outgoing callback, use cbdelay instead of dialtimeout */
if (mlp->cbdelay && (mlp->flags & ISDN_NET_CBOUT)) {
idev->dial_timer.expires = jiffies + mlp->cbdelay;
idev->dial_event = EV_NET_TIMER_CB_OUT;
} else {
idev->dial_timer.expires = jiffies + mlp->dialtimeout;
idev->dial_event = EV_NET_TIMER_DIAL;
}
idev->dialstate = ST_OUT_WAIT_DCONN;
add_timer(&idev->dial_timer);
/* Dial */
isdn_slot_dial(idev->isdn_slot, &dial);
return 1;
}
/* If we didn't connect within dialtimeout, we give up for now
* and wait for dialwait jiffies before trying again.
*/
static int
dial_timeout(isdn_net_dev *idev)
{
isdn_net_local *mlp = idev->mlp;
isdn_ctrl cmd;
idev->dialstate = ST_OUT_DIAL_WAIT;
isdn_slot_command(idev->isdn_slot, ISDN_CMD_HANGUP, &cmd);
/* get next phone number */
if (!get_outgoing_phone(idev)) {
/* otherwise start over at first entry */
idev->dial = 0;
idev->dialretry++;
}
if (idev->dialretry >= mlp->dialmax) {
isdn_net_hangup(idev);
return 1;
}
idev->dial_event = EV_NET_TIMER_DIAL_WAIT;
mod_timer(&idev->dial_timer, jiffies + mlp->dialwait);
return 1;
}
static int
isdn_net_connect_failure(isdn_net_dev *idev)
{
del_timer(&idev->dial_timer);
isdn_slot_all_eaz(idev->isdn_slot);
printk(KERN_INFO "%s: connection failed\n", idev->name);
isdn_net_unbind_channel(idev);
return 1;
}
static int
isdn_net_out_dconn(isdn_net_dev *idev)
{
isdn_ctrl cmd;
idev->dialstate = ST_OUT_WAIT_BCONN;
isdn_slot_command(idev->isdn_slot, ISDN_CMD_ACCEPTB, &cmd);
return 1;
}
static int
isdn_net_in_dconn(isdn_net_dev *idev)
{
isdn_ctrl cmd;
idev->dialstate = ST_IN_WAIT_BCONN;
isdn_slot_command(idev->isdn_slot, ISDN_CMD_ACCEPTB, &cmd);
return 1;
}
static int
isdn_net_bconn(isdn_net_dev *idev)
{
isdn_net_local *mlp = idev->mlp;
idev->dialstate = ST_ACTIVE;
if (mlp->onhtime) {
idev->huptimer = 0;
idev->dial_event = EV_NET_TIMER_HUP;
mod_timer(&idev->dial_timer, jiffies + HZ);
} else {
del_timer(&idev->dial_timer);
}
isdn_net_add_to_bundle(mlp, idev);
printk(KERN_INFO "isdn_net: %s connected\n", idev->name);
/* If first Chargeinfo comes before B-Channel connect,
* we correct the timestamp here.
*/
idev->chargetime = jiffies;
idev->transcount = 0;
idev->cps = 0;
idev->last_jiffies = jiffies;
if (mlp->ops->connected)
mlp->ops->connected(idev);
else
isdn_net_dev_wake_queue(idev);
return 1;
}
/* Check if it's time for idle hang-up */
static int
isdn_net_check_hup(isdn_net_dev *idev)
{
isdn_net_local *mlp = idev->mlp;
dbg_net_dial("%s: huptimer %d onhtime %d chargetime %ld chargeint %d\n",
idev->name, idev->huptimer, mlp->onhtime, idev->chargetime, idev->chargeint);
if (idev->huptimer++ <= mlp->onhtime)
goto mod_timer;
if (mlp->hupflags & ISDN_CHARGEHUP &&
idev->charge_state == ST_CHARGE_HAVE_CINT) {
if (!time_after(jiffies, idev->chargetime
+ idev->chargeint - 2 * HZ))
goto mod_timer;
}
if (idev->outgoing || mlp->hupflags & ISDN_INHUP)
return isdn_net_hangup(idev);
mod_timer:
mod_timer(&idev->dial_timer, idev->dial_timer.expires + HZ);
return 1;
}
/* Charge-info from TelCo. */
static int
isdn_net_cinf(isdn_net_dev *idev)
{
idev->charge++;
switch (idev->charge_state) {
case ST_CHARGE_NULL:
idev->charge_state = ST_CHARGE_GOT_CINF;
break;
case ST_CHARGE_GOT_CINF:
idev->charge_state = ST_CHARGE_HAVE_CINT;
/* fall through */
case ST_CHARGE_HAVE_CINT:
idev->chargeint = jiffies - idev->chargetime;
break;
}
idev->chargetime = jiffies;
dbg_net_dial("%s: got CINF\n", idev->name);
return 1;
}
static int
isdn_net_disconnected(isdn_net_dev *idev)
{
isdn_net_local *mlp = idev->mlp;
del_timer(&idev->dial_timer);
if (mlp->ops->disconnected)
mlp->ops->disconnected(idev);
isdn_net_rm_from_bundle(idev);
printk(KERN_INFO "%s: disconnected\n", idev->name);
printk(KERN_INFO "%s: Chargesum is %d\n", idev->name,
idev->charge);
isdn_slot_all_eaz(idev->isdn_slot);
isdn_net_unbind_channel(idev);
return 1;
}
/* Perform hangup for a net-interface. */
int
isdn_net_hangup(isdn_net_dev *idev)
{
isdn_ctrl cmd;
del_timer(&idev->dial_timer);
if (!isdn_net_bound(idev)) {
isdn_BUG();
return 1;
}
printk(KERN_INFO "%s: local hangup\n", idev->name);
isdn_slot_command(idev->isdn_slot, ISDN_CMD_HANGUP, &cmd);
return 1;
}
static int
isdn_net_event_out_wait_dconn(isdn_net_dev *idev, int pr, void *arg)
{
switch (pr) {
case EV_NET_TIMER_DIAL:
return dial_timeout(idev);
case EV_NET_TIMER_CB_OUT:
return isdn_net_hangup(idev);
case ISDN_STAT_DCONN:
return isdn_net_out_dconn(idev);
case ISDN_STAT_DHUP:
return isdn_net_connect_failure(idev);
}
isdn_BUG();
return 0;
}
static int
isdn_net_event_out_wait_bconn(isdn_net_dev *idev, int pr, void *arg)
{
switch (pr) {
case EV_NET_TIMER_DIAL:
return dial_timeout(idev);
case ISDN_STAT_BCONN:
return isdn_net_bconn(idev);
case ISDN_STAT_DHUP:
return isdn_net_connect_failure(idev);
}
isdn_BUG();
return 0;
}
static int
isdn_net_event_in_wait_dconn(isdn_net_dev *idev, int pr, void *arg)
{
switch (pr) {
case EV_NET_TIMER_INCOMING:
return isdn_net_hangup(idev);
case ISDN_STAT_DCONN:
return isdn_net_in_dconn(idev);
case ISDN_STAT_DHUP:
return isdn_net_connect_failure(idev);
}
isdn_BUG();
return 0;
}
static int
isdn_net_event_in_wait_bconn(isdn_net_dev *idev, int pr, void *arg)
{
switch (pr) {
case EV_NET_TIMER_INCOMING:
return isdn_net_hangup(idev);
case ISDN_STAT_BCONN:
return isdn_net_bconn(idev);
case ISDN_STAT_DHUP:
return isdn_net_connect_failure(idev);
}
isdn_BUG();
return 0;
}
static int
isdn_net_event_wait_before_cb(isdn_net_dev *idev, int pr, void *arg)
{
switch (pr) {
case EV_NET_TIMER_CB_IN:
return init_dialout(idev);
}
isdn_BUG();
return 0;
}
static int
isdn_net_event_active(isdn_net_dev *idev, int pr, void *arg)
{
switch (pr) {
case EV_NET_TIMER_HUP:
return isdn_net_check_hup(idev);
case ISDN_STAT_BSENT:
return isdn_net_bsent(idev, arg);
case ISDN_STAT_BHUP:
case ISDN_STAT_DHUP:
return isdn_net_disconnected(idev);
case ISDN_STAT_CINF:
return isdn_net_cinf(idev);
}
isdn_BUG();
return 0;
}
static int
isdn_net_event_dial_wait(isdn_net_dev *idev, int pr, void *arg)
{
switch (pr) {
case EV_NET_TIMER_DIAL_WAIT:
return do_dialout(idev);
}
isdn_BUG();
return 0;
}
/*
* For ISDN_STAT_*, return 1 if event was for us
*/
int
isdn_net_handle_event(isdn_net_dev *idev, int pr, void *arg)
{
dbg_net_dial("%s: dialstate=%d pr=%#x\n", idev->name,
idev->dialstate, pr);
switch (idev->dialstate) {
case ST_ACTIVE:
return isdn_net_event_active(idev, pr, arg);
case ST_OUT_WAIT_DCONN:
return isdn_net_event_out_wait_dconn(idev, pr, arg);
case ST_OUT_WAIT_BCONN:
return isdn_net_event_out_wait_bconn(idev, pr, arg);
case ST_IN_WAIT_DCONN:
return isdn_net_event_in_wait_dconn(idev, pr, arg);
case ST_IN_WAIT_BCONN:
return isdn_net_event_in_wait_bconn(idev, pr, arg);
case ST_WAIT_BEFORE_CB:
return isdn_net_event_wait_before_cb(idev, pr, arg);
case ST_OUT_DIAL_WAIT:
return isdn_net_event_dial_wait(idev, pr, arg);
default:
isdn_BUG();
return 0;
}
}
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