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Commit 3b1022c5 authored by Linus Torvalds's avatar Linus Torvalds
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Merge http://linux-isdn.bkbits.net/linux-2.5.isdn 

into home.transmeta.com:/home/torvalds/v2.5/linux
parents 798c67c3 c2ee3a2d
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Showing with 366 additions and 335 deletions
drivers/isdn/i4l/isdn_common.c
View file @ 3b1022c5
......@@ -503,11 +503,14 @@ isdn_status_callback(isdn_ctrl * c)
retval = 2;
}
break;
case 1:
case 1: /* incoming call accepted by net interface */
list_for_each(l, &isdn_net_devs) {
isdn_net_dev *p = list_entry(l, isdn_net_dev, global_list);
if (p->isdn_slot == i) {
strcpy(cmd.parm.setup.eazmsn, p->mlp->msn);
isdn_slot_set_usage(i, (isdn_slot_usage(i) & ISDN_USAGE_EXCLUSIVE) | ISDN_USAGE_NET);
strcpy(isdn_slot_num(i), c->parm.setup.phone);
isdn_slot_command(i, ISDN_CMD_ACCEPTD, &cmd);
retval = 1;
break;
......@@ -1535,26 +1538,20 @@ isdn_get_free_slot(int usage, int l2_proto, int l3_proto,
if (USG_NONE(slot[i].usage) &&
(slot[i].di != -1)) {
int d = slot[i].di;
if ((slot[i].usage & ISDN_USAGE_EXCLUSIVE) &&
((pre_dev != d) || (pre_chan != slot[i].ch)))
continue;
if (!strcmp(isdn_map_eaz2msn(msn, d), "-"))
continue;
if (slot[i].usage & ISDN_USAGE_DISABLED)
continue; /* usage not allowed */
if (dev->drv[d]->flags & DRV_FLAG_RUNNING) {
if (((dev->drv[d]->interface->features & features) == features) ||
(((dev->drv[d]->interface->features & vfeatures) == vfeatures) &&
(dev->drv[d]->interface->features & ISDN_FEATURE_L2_TRANS))) {
if ((pre_dev < 0) || (pre_chan < 0)) {
isdn_slot_set_usage(i, (isdn_slot_usage(i) & ISDN_USAGE_EXCLUSIVE) | usage);
restore_flags(flags);
return i;
} else if ((pre_dev == d) && (pre_chan == slot[i].ch)) {
isdn_slot_set_usage(i, (isdn_slot_usage(i) & ISDN_USAGE_EXCLUSIVE) | usage);
restore_flags(flags);
return i;
}
if (!dev->drv[d]->flags & DRV_FLAG_RUNNING)
continue;
if (((dev->drv[d]->interface->features & features) == features) ||
(((dev->drv[d]->interface->features & vfeatures) == vfeatures) &&
(dev->drv[d]->interface->features & ISDN_FEATURE_L2_TRANS))) {
if (pre_dev < 0 || pre_chan < 0 ||
(pre_dev == d && pre_chan == slot[i].ch)) {
isdn_slot_set_usage(i, usage);
restore_flags(flags);
return i;
}
}
}
......@@ -1571,50 +1568,27 @@ isdn_free_channel(int di, int ch, int usage)
int sl;
sl = isdn_dc2minor(di, ch);
isdn_slot_free(sl, usage);
isdn_slot_free(sl);
}
void
isdn_slot_free(int sl, int usage)
isdn_slot_free(int sl)
{
unsigned long flags;
save_flags(flags);
cli();
if (!usage || (slot[sl].usage & ISDN_USAGE_MASK) == usage) {
strcpy(isdn_slot_num(sl), "???");
slot[sl].ibytes = 0;
slot[sl].obytes = 0;
strcpy(isdn_slot_num(sl), "???");
slot[sl].ibytes = 0;
slot[sl].obytes = 0;
// 20.10.99 JIM, try to reinitialize v110 !
slot[sl].iv110.v110emu = 0;
atomic_set(&slot[sl].iv110.v110use, 0);
isdn_v110_close(slot[sl].iv110.v110);
slot[sl].iv110.v110 = NULL;
slot[sl].iv110.v110emu = 0;
atomic_set(&slot[sl].iv110.v110use, 0);
isdn_v110_close(slot[sl].iv110.v110);
slot[sl].iv110.v110 = NULL;
// 20.10.99 JIM, try to reinitialize v110 !
isdn_slot_set_usage(sl, isdn_slot_usage(sl) & (ISDN_USAGE_NONE | ISDN_USAGE_EXCLUSIVE));
skb_queue_purge(&dev->drv[isdn_slot_driver(sl)]->rpqueue[isdn_slot_channel(sl)]);
}
restore_flags(flags);
}
/*
* Cancel Exclusive-Flag for ISDN-channel
*/
void
isdn_unexclusive_channel(int di, int ch)
{
int i;
ulong flags;
save_flags(flags);
cli();
for (i = 0; i < ISDN_MAX_CHANNELS; i++)
if ((slot[i].di == di) &&
(slot[i].ch == ch)) {
isdn_slot_set_usage(i, isdn_slot_usage(i) & ~ISDN_USAGE_EXCLUSIVE);
restore_flags(flags);
return;
}
isdn_slot_set_usage(sl, ISDN_USAGE_NONE);
skb_queue_purge(&dev->drv[isdn_slot_driver(sl)]->rpqueue[isdn_slot_channel(sl)]);
restore_flags(flags);
}
......@@ -1959,6 +1933,7 @@ isdn_slot_command(int sl, int cmd, isdn_ctrl *ctrl)
case ISDN_CMD_DIAL:
if (dev->global_flags & ISDN_GLOBAL_STOPPED)
return -EBUSY;
/* fall through */
default:
ctrl->arg = isdn_slot_channel(sl);
......
drivers/isdn/i4l/isdn_common.h
View file @ 3b1022c5
......@@ -64,7 +64,6 @@ extern int isdn_dc2minor(int di, int ch);
extern void isdn_info_update(void);
extern char *isdn_map_eaz2msn(char *msn, int di);
extern void isdn_timer_ctrl(int tf, int onoff);
extern void isdn_unexclusive_channel(int di, int ch);
extern int isdn_getnum(char **);
extern int isdn_msncmp( const char *, const char *);
extern int isdn_add_channels(driver *, int, int, int);
......@@ -85,7 +84,7 @@ struct dial_info {
};
extern int isdn_get_free_slot(int, int, int, int, int, char *);
extern void isdn_slot_free(int slot, int usage);
extern void isdn_slot_free(int slot);
extern void isdn_slot_all_eaz(int slot);
extern int isdn_slot_command(int slot, int cmd, isdn_ctrl *);
extern int isdn_slot_dial(int slot, struct dial_info *dial);
......
drivers/isdn/i4l/isdn_concap.c
View file @ 3b1022c5
......@@ -21,8 +21,6 @@
#include "isdn_concap.h"
#include <linux/if_arp.h>
#ifdef CONFIG_ISDN_X25
/* The following set of device service operations are for encapsulation
protocols that require for reliable datalink semantics. That means:
......@@ -255,5 +253,3 @@ struct isdn_netif_ops isdn_x25_ops = {
.open = isdn_x25_open,
.close = isdn_x25_close,
};
#endif /* CONFIG_ISDN_X25 */
drivers/isdn/i4l/isdn_net.c
View file @ 3b1022c5
......@@ -423,163 +423,6 @@ isdn_net_rcv_skb(int idx, struct sk_buff *skb)
return 0;
}
/*
* An incoming call-request has arrived.
* Search the interface-chain for an appropriate interface.
* If found, connect the interface to the ISDN-channel and initiate
* D- and B-Channel-setup. If secure-flag is set, accept only
* configured phone-numbers. If callback-flag is set, initiate
* callback-dialing.
*
* Return-Value: 0 = No appropriate interface for this call.
* 1 = Call accepted
* 2 = Reject call, wait cbdelay, then call back
* 3 = Reject call
* 4 = Wait cbdelay, then call back
* 5 = No appropriate interface for this call,
* would eventually match if CID was longer.
*/
int
isdn_net_find_icall(int di, int ch, int idx, setup_parm *setup)
{
char *eaz;
unsigned char si1, si2;
int match_more = 0;
int retval;
struct list_head *l;
struct isdn_net_phone *n;
ulong flags;
char nr[32];
char *my_eaz;
int slot = isdn_dc2minor(di, ch);
/* Search name in netdev-chain */
save_flags(flags);
cli();
if (!setup->phone[0]) {
nr[0] = '0';
nr[1] = '\0';
printk(KERN_INFO "isdn_net: Incoming call without OAD, assuming '0'\n");
} else {
strcpy(nr, setup->phone);
}
si1 = setup->si1;
si2 = setup->si2;
if (!setup->eazmsn[0]) {
printk(KERN_WARNING "isdn_net: Incoming call without CPN, assuming '0'\n");
eaz = "0";
} else {
eaz = setup->eazmsn;
}
if (dev->net_verbose > 1)
printk(KERN_INFO "isdn_net: call from %s,%d,%d -> %s\n", nr, si1, si2, eaz);
/* Accept DATA and VOICE calls at this stage
local eaz is checked later for allowed call types */
if ((si1 != 7) && (si1 != 1)) {
restore_flags(flags);
if (dev->net_verbose > 1)
printk(KERN_INFO "isdn_net: Service-Indicator not 1 or 7, ignored\n");
return 0;
}
n = NULL;
dbg_net_icall("n_fi: di=%d ch=%d idx=%d usg=%d\n", di, ch, idx,
isdn_slot_usage(idx));
list_for_each(l, &isdn_net_devs) {
isdn_net_dev *idev = list_entry(l, isdn_net_dev, global_list);
isdn_net_local *mlp = idev->mlp;
/* check acceptable call types for DOV */
dbg_net_icall("n_fi: if='%s', l.msn=%s, l.flags=%#x, l.dstate=%d\n",
idev->name, mlp->msn, mlp->flags, idev->fi.state);
my_eaz = isdn_slot_map_eaz2msn(slot, mlp->msn);
if (si1 == 1) { /* it's a DOV call, check if we allow it */
if (*my_eaz == 'v' || *my_eaz == 'V' ||
*my_eaz == 'b' || *my_eaz == 'B')
my_eaz++; /* skip to allow a match */
else
continue; /* force non match */
} else { /* it's a DATA call, check if we allow it */
if (*my_eaz == 'b' || *my_eaz == 'B')
my_eaz++; /* skip to allow a match */
}
switch (isdn_msncmp(eaz, my_eaz)) {
case 1:
continue;
case 2:
match_more = 1;
continue;
}
if (isdn_net_bound(idev))
continue;
if (!USG_NONE(isdn_slot_usage(idx)))
continue;
dbg_net_icall("n_fi: match1, pdev=%d pch=%d\n",
idev->pre_device, idev->pre_channel);
if (isdn_slot_usage(idx) & ISDN_USAGE_EXCLUSIVE &&
(idev->pre_channel != ch || idev->pre_device != di)) {
dbg_net_icall("n_fi: excl check failed\n");
continue;
}
dbg_net_icall("n_fi: match2\n");
if (mlp->flags & ISDN_NET_SECURE) {
list_for_each_entry(n, &mlp->phone[0], list) {
if (!isdn_msncmp(nr, n->num)) {
goto found;
}
}
continue;
}
found:
dbg_net_icall("n_fi: match3\n");
/* matching interface found */
/*
* Is the state STOPPED?
* If so, no dialin is allowed,
* so reject actively.
* */
if (ISDN_NET_DIALMODE(*mlp) == ISDN_NET_DM_OFF) {
restore_flags(flags);
printk(KERN_INFO "incoming call, interface %s `stopped' -> rejected\n",
idev->name);
return 3;
}
/*
* Is the interface up?
* If not, reject the call actively.
*/
if (!isdn_net_device_started(idev)) {
restore_flags(flags);
printk(KERN_INFO "%s: incoming call, interface down -> rejected\n",
idev->name);
return 3;
}
if (mlp->flags & ISDN_NET_CALLBACK) {
retval = isdn_net_do_callback(idev);
restore_flags(flags);
return retval;
}
printk(KERN_DEBUG "%s: call from %s -> %s accepted\n",
idev->name, nr, eaz);
isdn_net_accept(idev, idx, nr);
restore_flags(flags);
return 1;
}
if (dev->net_verbose)
printk(KERN_INFO "isdn_net: call from %s -> %d %s ignored\n", nr, slot, eaz);
restore_flags(flags);
return (match_more == 2) ? 5:0;
}
/*
* This is called from certain upper protocol layers (multilink ppp
* and x25iface encapsulation module) that want to initiate dialing
......
drivers/isdn/i4l/isdn_net.h
View file @ 3b1022c5
......@@ -43,11 +43,7 @@ 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);
......
drivers/isdn/i4l/isdn_net_lib.c
View file @ 3b1022c5
......@@ -10,6 +10,33 @@
* of the GNU General Public License, incorporated herein by reference.
*/
/* Locking works as follows:
*
* The configuration of isdn_net_devs works via ioctl on
* /dev/isdnctrl (for legacy reasons).
* All configuration accesses are globally serialized by means of
* the global semaphore &sem.
*
* All other uses of isdn_net_dev will only happen when the corresponding
* struct net_device has been opened. So in the non-config code we can
* rely on the config data not changing under us.
*
* To achieve this, in the "writing" ioctls, that is those which may change
* data, additionally grep the rtnl semaphore and check to make sure
* that the net_device has not been openend ("netif_running()")
*
* isdn_net_dev's are added to the global list "isdn_net_devs" in the
* configuration ioctls, so accesses to that list are protected by
* &sem as well.
*
* Incoming calls are signalled in IRQ context, so we cannot take &sem
* while walking the list of devices. To handle this, we put devices
* onto a "running" list, which is protected by a spin lock and can thus
* be traversed in IRQ context. If a matching isdn_net_dev is found,
* it's ref count shall be incremented, to make sure no racing
* net_device::close() can take it away under us.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/skbuff.h>
......@@ -28,6 +55,31 @@
static DECLARE_MUTEX(sem);
LIST_HEAD(isdn_net_devs); /* Linked list of isdn_net_dev's */ // FIXME static
/* Reference counting for net devices (they work on isdn_net_local *,
* but count references to the related isdn_net_dev's as well.
* Basic rule: When state of isdn_net_dev changes from ST_NULL -> sth,
* get a reference, when it changes back to ST_NULL, put it
*/
static inline void
lp_get(isdn_net_local *lp)
{
if (atomic_read(&lp->refcnt) < 1)
isdn_BUG();
atomic_inc(&lp->refcnt);
}
static inline void
lp_put(isdn_net_local *lp)
{
atomic_dec(&lp->refcnt);
/* the last reference, the list should always remain */
if (atomic_read(&lp->refcnt) < 1)
isdn_BUG();
}
int isdn_net_handle_event(isdn_net_dev *idev, int pr, void *arg); /* FIXME */
static void isdn_net_tasklet(unsigned long data);
......@@ -39,6 +91,7 @@ static struct fsm isdn_net_fsm;
enum {
ST_NULL,
ST_OUT_BOUND,
ST_OUT_WAIT_DCONN,
ST_OUT_WAIT_BCONN,
ST_IN_WAIT_DCONN,
......@@ -51,6 +104,7 @@ enum {
static char *isdn_net_st_str[] = {
"ST_NULL",
"ST_OUT_BOUND",
"ST_OUT_WAIT_DCONN",
"ST_OUT_WAIT_BCONN",
"ST_IN_WAIT_DCONN",
......@@ -74,7 +128,9 @@ enum {
EV_STAT_BHUP,
EV_STAT_CINF,
EV_STAT_BSENT,
EV_CMD_DIAL,
EV_DO_DIAL,
EV_DO_CALLBACK,
EV_DO_ACCEPT,
};
static char *isdn_net_ev_str[] = {
......@@ -90,7 +146,9 @@ static char *isdn_net_ev_str[] = {
"EV_STAT_BHUP",
"EV_STAT_CINF",
"EV_STAT_BSENT",
"EV_CMD_DIAL",
"EV_DO_DIAL",
"EV_DO_CALLBACK",
"EV_DO_ACCEPT",
};
/* ====================================================================== */
......@@ -225,21 +283,18 @@ isdn_net_bind(isdn_net_dev *idev, isdn_net_ioctl_cfg *cfg)
goto out;
}
if (idev->exclusive >= 0) {
isdn_unexclusive_channel(idev->pre_device, idev->pre_channel);
isdn_free_channel(idev->pre_device, idev->pre_channel, ISDN_USAGE_NET);
isdn_slot_free(idev->exclusive);
idev->exclusive = -1;
}
if (cfg->exclusive) {
/* If binding is exclusive, try to grab the channel */
idev->exclusive = isdn_get_free_slot(ISDN_USAGE_NET, mlp->l2_proto,
mlp->l3_proto, drvidx, chidx, cfg->eaz);
idev->exclusive = isdn_get_free_slot(ISDN_USAGE_NET | ISDN_USAGE_EXCLUSIVE,
mlp->l2_proto, mlp->l3_proto, drvidx, chidx, cfg->eaz);
if (idev->exclusive < 0) {
/* Grab failed, because desired channel is in use */
retval = -EBUSY;
goto out;
}
/* All went ok, so update isdninfo */
isdn_slot_set_usage(idev->exclusive, ISDN_USAGE_EXCLUSIVE);
}
idev->pre_device = drvidx;
idev->pre_channel = chidx;
......@@ -360,6 +415,7 @@ isdn_net_addif(char *name, isdn_net_local *mlp)
}
}
list_add(&idev->global_list, &isdn_net_devs);
return 0;
}
......@@ -417,7 +473,7 @@ isdn_net_dev_delete(isdn_net_dev *idev)
isdn_net_rmallphone(idev);
if (idev->exclusive >= 0)
isdn_unexclusive_channel(idev->pre_device, idev->pre_channel);
isdn_slot_free(idev->exclusive);
list_del(&idev->slaves);
......@@ -978,6 +1034,9 @@ isdn_net_exit(void)
/* interface to network layer */
/* ====================================================================== */
static spinlock_t running_devs_lock = SPIN_LOCK_UNLOCKED;
static LIST_HEAD(running_devs);
/*
* Open/initialize the board.
*/
......@@ -985,6 +1044,7 @@ static int
isdn_net_open(struct net_device *dev)
{
isdn_net_local *lp = dev->priv;
unsigned long flags;
int retval = 0;
if (!lp->ops)
......@@ -997,6 +1057,12 @@ isdn_net_open(struct net_device *dev)
return retval;
netif_start_queue(dev);
atomic_set(&lp->refcnt, 1);
spin_lock_irqsave(&running_devs_lock, flags);
list_add(&lp->running_devs, &running_devs);
spin_unlock_irqrestore(&running_devs_lock, flags);
return 0;
}
......@@ -1008,8 +1074,9 @@ static int
isdn_net_close(struct net_device *dev)
{
isdn_net_local *lp = dev->priv;
struct list_head *l, *n;
isdn_net_dev *sdev;
struct list_head *l, *n;
unsigned long flags;
if (lp->ops->close)
lp->ops->close(lp);
......@@ -1020,6 +1087,20 @@ isdn_net_close(struct net_device *dev)
sdev = list_entry(l, isdn_net_dev, online);
isdn_net_hangup(sdev);
}
/* The hangup will make the refcnt drop back to
* 1 (referenced by list only) soon. */
spin_lock_irqsave(&running_devs_lock, flags);
while (atomic_read(&dev->refcnt) != 1) {
spin_unlock_irqrestore(&running_devs_lock, flags);
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(HZ/10);
spin_lock_irqsave(&running_devs_lock, flags);
}
/* We have the only reference and list lock, so
* nobody can get another reference. */
list_del(&lp->running_devs);
spin_unlock_irqrestore(&running_devs_lock, flags);
return 0;
}
......@@ -1101,43 +1182,13 @@ 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
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();
......@@ -1147,58 +1198,66 @@ isdn_net_unbind_channel(isdn_net_dev *idev)
if (mlp->ops->unbind)
mlp->ops->unbind(idev);
skb_queue_purge(&idev->super_tx_queue);
isdn_slot_set_idev(idev->isdn_slot, NULL);
fsm_change_state(&idev->fi, ST_NULL);
skb_queue_purge(&idev->super_tx_queue);
isdn_slot_set_idev(idev->isdn_slot, NULL);
isdn_slot_free(idev->isdn_slot, ISDN_USAGE_NET);
if (idev->isdn_slot != idev->exclusive)
isdn_slot_free(idev->isdn_slot);
idev->isdn_slot = -1;
restore_flags(flags);
if (idev->fi.state != ST_NULL) {
lp_put(mlp);
fsm_change_state(&idev->fi, ST_NULL);
}
}
int
isdn_net_dial(isdn_net_dev *idev)
/*
* Assign an ISDN-channel to a net-interface
*/
static int
isdn_net_bind_channel(isdn_net_dev *idev, int slot)
{
int slot;
isdn_net_local *mlp = idev->mlp;
int retval = 0;
if (isdn_net_bound(idev))
return -EBUSY;
idev->isdn_slot = slot;
isdn_slot_set_idev(idev->isdn_slot, idev);
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;
if (mlp->ops->bind)
retval = mlp->ops->bind(idev);
isdn_slot_set_usage(slot, isdn_slot_usage(slot) | ISDN_USAGE_OUTGOING);
if (retval < 0)
isdn_net_unbind_channel(idev);
if (isdn_net_bind_channel(idev, slot) < 0)
goto err;
return retval;
}
/* Initiate dialing */
fsm_event(&idev->fi, EV_CMD_DIAL, NULL);
return 0;
int
isdn_net_dial(isdn_net_dev *idev)
{
int retval;
lp_get(idev->mlp);
retval = fsm_event(&idev->fi, EV_DO_DIAL, NULL);
if (retval == -ESRCH) /* event not handled in this state */
retval = -EBUSY;
if (retval)
lp_put(idev->mlp);
err:
return -EAGAIN;
return retval;
}
void
isdn_net_accept(isdn_net_dev *idev, int slot, char *nr)
static int
accept_icall(struct fsm_inst *fi, int pr, void *arg)
{
isdn_net_dev *idev = fi->userdata;
isdn_net_local *mlp = idev->mlp;
isdn_ctrl cmd;
int slot = (int) arg;
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;
......@@ -1215,47 +1274,191 @@ isdn_net_accept(isdn_net_dev *idev, int slot, char *nr)
idev->dial_event = EV_TIMER_INCOMING;
add_timer(&idev->dial_timer);
fsm_change_state(&idev->fi, ST_IN_WAIT_DCONN);
return 0;
}
int
isdn_net_do_callback(isdn_net_dev *idev)
static int
do_callback(struct fsm_inst *fi, int pr, void *arg)
{
isdn_net_dev *idev = fi->userdata;
isdn_net_local *mlp = idev->mlp;
int slot;
/*
* Is the state MANUAL?
* If so, no callback can be made,
* so reject actively.
*/
printk(KERN_DEBUG "%s: start callback\n", idev->name);
idev->dial_timer.expires = jiffies + mlp->cbdelay;
idev->dial_event = EV_TIMER_CB_IN;
add_timer(&idev->dial_timer);
fsm_change_state(&idev->fi, ST_WAIT_BEFORE_CB);
return 0;
}
static int
isdn_net_dev_icall(isdn_net_dev *idev, int di, int ch, int si1,
char *eaz, char *nr)
{
isdn_net_local *mlp = idev->mlp;
struct isdn_net_phone *ph;
int slot = isdn_dc2minor(di, ch);
char *my_eaz;
/* check acceptable call types for DOV */
dbg_net_icall("n_fi: if='%s', l.msn=%s, l.flags=%#x, l.dstate=%d\n",
idev->name, mlp->msn, mlp->flags, idev->fi.state);
my_eaz = isdn_slot_map_eaz2msn(slot, mlp->msn);
if (si1 == 1) { /* it's a DOV call, check if we allow it */
if (*my_eaz == 'v' || *my_eaz == 'V' ||
*my_eaz == 'b' || *my_eaz == 'B')
my_eaz++; /* skip to allow a match */
else
return 0; /* no match */
} else { /* it's a DATA call, check if we allow it */
if (*my_eaz == 'b' || *my_eaz == 'B')
my_eaz++; /* skip to allow a match */
}
if (!USG_NONE(isdn_slot_usage(slot))) // FIXME?
return 0;
/* check called number */
switch (isdn_msncmp(eaz, my_eaz)) {
case 1: /* no match */
return 0;
case 2: /* matches so far */
return 5;
}
dbg_net_icall("%s: pdev=%d di=%d pch=%d ch = %d\n", idev->name,
idev->pre_device, di, idev->pre_channel, ch);
/* check if exclusive */
if ((isdn_slot_usage(slot) & ISDN_USAGE_EXCLUSIVE) &&
(idev->pre_channel != ch || idev->pre_device != di)) {
dbg_net_icall("%s: excl check failed\n", idev->name);
return 0;
}
/* check calling number */
dbg_net_icall("%s: secure\n", idev->name);
if (mlp->flags & ISDN_NET_SECURE) {
list_for_each_entry(ph, &mlp->phone[0], list) {
if (isdn_msncmp(nr, ph->num) == 0)
goto found;
}
return 0;
}
found:
/* check dial mode */
if (ISDN_NET_DIALMODE(*mlp) == ISDN_NET_DM_OFF) {
printk(KERN_INFO "incoming call for callback, interface %s `off' -> rejected\n",
printk(KERN_INFO "%s: incoming call, stopped -> 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;
lp_get(mlp);
/* check callback */
if (mlp->flags & ISDN_NET_CALLBACK) {
if (fsm_event(&idev->fi, EV_DO_CALLBACK, NULL)) {
lp_put(mlp);
return 0;
}
/* Initiate dialing by returning 2 or 4 */
return (mlp->flags & ISDN_NET_CBHUP) ? 2 : 4;
}
printk(KERN_INFO "%s: call from %s -> %s accepted\n",
idev->name, nr, eaz);
isdn_slot_set_usage(slot, isdn_slot_usage(slot) | ISDN_USAGE_OUTGOING);
if (fsm_event(&idev->fi, EV_DO_ACCEPT, (void *) slot)) {
lp_put(mlp);
return 0;
}
return 1; // accepted
}
if (isdn_net_bind_channel(idev, slot) < 0)
goto err;
/*
* An incoming call-request has arrived.
* Search the interface-chain for an appropriate interface.
* If found, connect the interface to the ISDN-channel and initiate
* D- and B-Channel-setup. If secure-flag is set, accept only
* configured phone-numbers. If callback-flag is set, initiate
* callback-dialing.
*
* Return-Value: 0 = No appropriate interface for this call.
* 1 = Call accepted
* 2 = Reject call, wait cbdelay, then call back
* 3 = Reject call
* 4 = Wait cbdelay, then call back
* 5 = No appropriate interface for this call,
* would eventually match if CID was longer.
*/
int
isdn_net_find_icall(int di, int ch, int idx, setup_parm *setup)
{
isdn_net_local *lp;
isdn_net_dev *idev;
char *nr, *eaz;
unsigned char si1, si2;
int retval;
unsigned long flags;
/* Setup dialstate. */
idev->dial_timer.expires = jiffies + mlp->cbdelay;
idev->dial_event = EV_TIMER_CB_IN;
add_timer(&idev->dial_timer);
fsm_change_state(&idev->fi, ST_WAIT_BEFORE_CB);
/* fix up calling number */
if (!setup->phone[0]) {
printk(KERN_INFO
"isdn_net: Incoming call without OAD, assuming '0'\n");
nr = "0";
} else {
nr = setup->phone;
}
/* fix up called number */
if (!setup->eazmsn[0]) {
printk(KERN_INFO
"isdn_net: Incoming call without CPN, assuming '0'\n");
eaz = "0";
} else {
eaz = setup->eazmsn;
}
si1 = setup->si1;
si2 = setup->si2;
if (dev->net_verbose > 1)
printk(KERN_INFO "isdn_net: call from %s,%d,%d -> %s\n",
nr, si1, si2, eaz);
/* check service indicator */
/* Accept DATA and VOICE calls at this stage
local eaz is checked later for allowed call types */
if ((si1 != 7) && (si1 != 1)) {
if (dev->net_verbose > 1)
printk(KERN_INFO "isdn_net: "
"Service-Indicator not 1 or 7, ignored\n");
return 0;
}
dbg_net_icall("n_fi: di=%d ch=%d idx=%d usg=%d\n", di, ch, idx,
isdn_slot_usage(idx));
/* Initiate dialing by returning 2 or 4 */
return (mlp->flags & ISDN_NET_CBHUP) ? 2 : 4;
retval = 0;
spin_lock_irqsave(&running_devs_lock, flags);
list_for_each_entry(lp, &running_devs, running_devs) {
lp_get(lp);
spin_unlock_irqrestore(&running_devs_lock, flags);
list_for_each_entry(idev, &lp->slaves, slaves) {
retval = isdn_net_dev_icall(idev, di, ch, si1, eaz, nr);
if (retval > 0)
break;
}
err:
return 0;
spin_lock_irqsave(&running_devs_lock, flags);
lp_put(lp);
if (retval > 0)
break;
}
spin_unlock_irqrestore(&running_devs_lock, flags);
if (!retval) {
if (dev->net_verbose)
printk(KERN_INFO "isdn_net: call "
"from %s -> %s ignored\n", nr, eaz);
}
return retval;
}
/* ---------------------------------------------------------------------- */
......@@ -1283,23 +1486,39 @@ static int dialout_next(struct fsm_inst *fi, int pr, void *arg);
/* Initiate dialout. */
static int
dialout_first(struct fsm_inst *fi, int pr, void *arg)
do_dial(struct fsm_inst *fi, int pr, void *arg)
{
isdn_net_dev *idev = fi->userdata;
isdn_net_local *mlp = idev->mlp;
int slot;
if (ISDN_NET_DIALMODE(*mlp) == ISDN_NET_DM_OFF) {
isdn_net_unbind_channel(idev);
if (ISDN_NET_DIALMODE(*mlp) == ISDN_NET_DM_OFF)
return -EPERM;
}
if (list_empty(&mlp->phone[1])) {
isdn_net_unbind_channel(idev);
if (list_empty(&mlp->phone[1])) /* no number to dial ? */
return -EINVAL;
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)
return -EAGAIN;
if (isdn_net_bind_channel(idev, slot) < 0) {
/* has freed the slot as well */
return -EAGAIN;
}
fsm_change_state(fi, ST_OUT_BOUND);
idev->dial = 0;
idev->dialretry = 0;
return dialout_next(fi, pr, arg);
dialout_next(fi, pr, arg);
return 0;
}
/* Try dialing the next number. */
......@@ -1598,7 +1817,9 @@ got_bsent(struct fsm_inst *fi, int pr, void *arg)
}
static struct fsm_node isdn_net_fn_tbl[] = {
{ ST_NULL, EV_CMD_DIAL, dialout_first },
{ ST_NULL, EV_DO_DIAL, do_dial },
{ ST_NULL, EV_DO_ACCEPT, accept_icall },
{ ST_NULL, EV_DO_CALLBACK, do_callback },
{ ST_OUT_WAIT_DCONN, EV_TIMER_DIAL, dial_timeout },
{ ST_OUT_WAIT_DCONN, EV_STAT_DCONN, out_dconn },
......@@ -1624,7 +1845,7 @@ static struct fsm_node isdn_net_fn_tbl[] = {
{ ST_WAIT_DHUP, EV_STAT_DHUP, dhup },
{ ST_WAIT_BEFORE_CB, EV_TIMER_CB_IN, dialout_first },
{ ST_WAIT_BEFORE_CB, EV_TIMER_CB_IN, do_dial },
{ ST_OUT_DIAL_WAIT, EV_TIMER_DIAL_WAIT, dialout_next },
};
......
drivers/isdn/i4l/isdn_tty.c
View file @ 3b1022c5
......@@ -745,7 +745,7 @@ isdn_tty_modem_hup(modem_info * info, int local)
isdn_slot_all_eaz(slot);
info->emu.mdmreg[REG_RINGCNT] = 0;
isdn_slot_free(slot, 0);
isdn_slot_free(slot);
isdn_slot_set_m_idx(slot, -1);
info->isdn_slot = -1;
}
......
drivers/isdn/i4l/isdn_ttyfax.c
View file @ 3b1022c5
......@@ -382,7 +382,7 @@ isdn_tty_cmd_FCLASS1(char **p, modem_info * info)
info->isdn_slot = i;
isdn_slot_set_m_idx(i, info->line);
isdn_slot_command(info->isdn_slot, ISDN_CMD_FAXCMD, &c);
isdn_slot_free(info->isdn_slot, ISDN_USAGE_FAX);
isdn_slot_free(info->isdn_slot);
isdn_slot_set_m_idx(i, -1);
info->isdn_slot = -1;
restore_flags(flags);
......
include/linux/isdn.h
View file @ 3b1022c5
......@@ -339,10 +339,11 @@ typedef struct isdn_net_local_s {
/* phone[1] = Outgoing Numbers */
struct list_head slaves; /* list of all bundled channels */
struct list_head online; /* circular list of all bundled
channels, which are currently
online */
spinlock_t online_lock; /* lock to protect queue */
struct list_head online; /* list of all bundled channels,
which are currently online */
spinlock_t online_lock; /* lock to protect online list */
struct list_head running_devs; /* member of global running_devs */
atomic_t refcnt; /* references held by ISDN code */
#ifdef CONFIG_ISDN_X25
struct concap_device_ops *dops; /* callbacks used by encapsulator */
......@@ -403,8 +404,8 @@ typedef struct isdn_net_dev_s {
isdn_net_local *mlp; /* Ptr to master device for all devs*/
struct list_head slaves; /* Members of local->slaves */
struct list_head online; /* Members of local->online */
struct list_head slaves; /* member of local->slaves */
struct list_head online; /* member of local->online */
char name[10]; /* Name of device */
struct list_head global_list; /* global list of all isdn_net_devs */
......
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