#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:
*
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)
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
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)
{
list_for_each_entry(idev, &mlp->slaves, slaves) {
if (!isdn_net_bound(idev)) {
- isdn_net_dev_dial(idev);
+ isdn_net_dial(idev);
break;
}
}
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 */
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.
ulong flags;
char nr[32];
char *my_eaz;
- isdn_ctrl cmd;
int slot = isdn_dc2minor(di, ch);
/* Search name in netdev-chain */
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;
}
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
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
* 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);
}
/*
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))) {
}
/* ====================================================================== */
+/* 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)
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;
+ }
+}
+
projects / linux / commitdiff