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isdn4linux/drivers/isdn/isdn_common.c

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/* $Id$
* Linux ISDN subsystem, common used functions (linklevel).
*
* Copyright 1994-1999 by Fritz Elfert (fritz@isdn4linux.de)
* Copyright 1995,96 Thinking Objects Software GmbH Wuerzburg
* Copyright 1995,96 by Michael Hipp (Michael.Hipp@student.uni-tuebingen.de)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Log$
* Revision 1.93 1999/11/04 13:11:36 keil
* Reinit of v110 structs
*
* Revision 1.92 1999/10/31 15:59:50 he
* more skb headroom checks
*
* Revision 1.91 1999/10/28 22:48:45 armin
* Bugfix: isdn_free_channel() now frees the channel,
* even when the usage of the ttyI has changed.
*
* Revision 1.90 1999/10/27 21:21:17 detabc
* Added support for building logically-bind-group's per interface.
* usefull for outgoing call's with more then one isdn-card.
*
* Switchable support to dont reset the hangup-timeout for
* receive frames. Most part's of the timru-rules for receiving frames
* are now obsolete. If the input- or forwarding-firewall deny
* the frame, the line will be not hold open.
*
* Revision 1.89 1999/10/16 14:46:47 keil
* replace kmalloc with vmalloc for the big dev struct
*
* Revision 1.88 1999/10/02 00:39:26 he
* Fixed a 2.3.x wait queue initialization (was causing panics)
*
* Revision 1.87 1999/09/12 16:19:39 detabc
* added abc features
* low cost routing for net-interfaces (only the HL side).
* need more implementation in the isdnlog-utility
* udp info support (first part).
* different EAZ on outgoing call's.
* more checks on D-Channel callbacks (double use of channels).
* tested and running with kernel 2.3.17
*
* Revision 1.86 1999/07/31 12:59:42 armin
* Added tty fax capabilities.
*
* Revision 1.85 1999/07/29 16:58:35 armin
* Bugfix: DLE handling in isdn_readbchan()
*
* Revision 1.84 1999/07/25 16:21:10 keil
* fix number matching
*
* Revision 1.83 1999/07/13 21:02:05 werner
* Added limit possibilty of driver b_channel resources (ISDN_STAT_DISCH)
*
* Revision 1.82 1999/07/12 21:06:50 werner
* Fixed problem when loading more than one driver temporary
*
* Revision 1.81 1999/07/11 17:14:09 armin
* Added new layer 2 and 3 protocols for Fax and DSP functions.
* Moved "Add CPN to RING message" to new register S23,
* "Display message" is now correct on register S13 bit 7.
* New audio command AT+VDD implemented (deactivate DTMF decoder and
* activate possible existing hardware/DSP decoder).
* Moved some tty defines to .h file.
* Made whitespace possible in AT command line.
* Some AT-emulator output bugfixes.
* First Fax G3 implementations.
*
* Revision 1.80 1999/07/07 10:14:00 detabc
* remove unused messages
*
* Revision 1.79 1999/07/05 23:51:30 werner
* Allow limiting of available HiSax B-chans per card. Controlled by hisaxctrl
* hisaxctrl id 10 <nr. of chans 0-2>
*
* Revision 1.78 1999/07/05 20:21:15 werner
* changes to use diversion sources for all kernel versions.
* removed static device, only proc filesystem used
*
* Revision 1.77 1999/07/01 08:29:50 keil
* compatibility to 2.3 kernel
*
* Revision 1.76 1999/06/29 16:16:44 calle
* Let ISDN_CMD_UNLOAD work with open isdn devices without crash again.
* Also right unlocking (ISDN_CMD_UNLOCK) is done now.
* isdnlog should check returncode of read(2) calls.
*
* Revision 1.75 1999/04/18 14:06:47 fritz
* Removed TIMRU stuff.
*
* Revision 1.74 1999/04/12 13:16:45 fritz
* Changes from 2.0 tree.
*
* Revision 1.73 1999/04/12 12:33:15 fritz
* Changes from 2.0 tree.
*
* Revision 1.72 1999/03/02 12:04:44 armin
* -added ISDN_STAT_ADDCH to increase supported channels after
* register_isdn().
* -ttyI now goes on-hook on ATZ when B-Ch is connected.
* -added timer-function for register S7 (Wait for Carrier).
* -analog modem (ISDN_PROTO_L2_MODEM) implementations.
* -on L2_MODEM a string will be appended to the CONNECT-Message,
* which is provided by the HL-Driver in parm.num in ISDN_STAT_BCONN.
* -variable "dialing" used for ATA also, for interrupting call
* establishment and register S7.
*
* Revision 1.71 1999/01/28 09:10:43 armin
* Fixed bad while-loop in isdn_readbch().
*
* Revision 1.70 1999/01/15 19:58:54 he
* removed compatibiltity macro
*
* Revision 1.69 1998/09/07 21:59:58 he
* flush method for 2.1.118 and above
* updated IIOCTLNETGPN
*
* Revision 1.68 1998/08/31 21:09:45 he
* new ioctl IIOCNETGPN for /dev/isdninfo (get network interface'
* peer phone number)
*
* Revision 1.67 1998/06/26 15:12:21 fritz
* Added handling of STAT_ICALL with incomplete CPN.
* Added AT&L for ttyI emulator.
* Added more locking stuff in tty_write.
*
* Revision 1.66 1998/06/17 19:50:41 he
* merged with 2.1.10[34] (cosmetics and udelay() -> mdelay())
* brute force fix to avoid Ugh's in isdn_tty_write()
* cleaned up some dead code
*
*
* Revision 1.62 1998/04/14 16:28:43 he
* Fixed user space access with interrupts off and remaining
* copy_{to,from}_user() -> -EFAULT return codes
*
* Revision 1.61 1998/03/22 18:50:46 hipp
* Added BSD Compression for syncPPP .. UNTESTED at the moment
*
* Revision 1.60 1998/03/19 13:18:18 keil
* Start of a CAPI like interface for supplementary Service
* first service: SUSPEND
*
* Revision 1.59 1998/03/09 17:46:23 he
* merged in 2.1.89 changes
*
* Revision 1.58 1998/03/07 22:35:24 fritz
* Starting generic module support (Nothing usable yet).
*
* Revision 1.57 1998/03/07 18:21:01 cal
* Dynamic Timeout-Rule-Handling vs. 971110 included
*
* Revision 1.56 1998/02/25 17:49:38 he
* Changed return codes caused be failing copy_{to,from}_user to -EFAULT
*
* Revision 1.55 1998/02/23 23:35:32 fritz
* Eliminated some compiler warnings.
*
* Revision 1.54 1998/02/22 19:44:19 fritz
* Bugfixes and improvements regarding V.110, V.110 now running.
*
* Revision 1.53 1998/02/20 17:18:05 fritz
* Changes for recent kernels.
* Added common stub for sending commands to lowlevel.
* Added V.110.
*
* Revision 1.52 1998/01/31 22:05:57 keil
* Lots of changes for X.25 support:
* Added generic support for connection-controlling encapsulation protocols
* Added support of BHUP status message
* Added support for additional p_encap X25IFACE
* Added support for kernels >= 2.1.72
*
* Revision 1.51 1998/01/31 19:17:29 calle
* merged changes from and for 2.1.82
*
* Revision 1.50 1997/12/12 06:12:11 calle
* moved EXPORT_SYMBOL(register_isdn) from isdn_syms.c to isdn_common.c
*
* Revision 1.49 1997/11/06 17:16:52 keil
* Sync to 2.1.62 changes
*
* Revision 1.48 1997/11/02 23:55:50 keil
* Andi Kleen's changes for 2.1.60
* without it the isdninfo and isdnctrl devices won't work
*
* Revision 1.47 1997/10/09 21:28:46 fritz
* New HL<->LL interface:
* New BSENT callback with nr. of bytes included.
* Sending without ACK.
* New L1 error status (not yet in use).
* Cleaned up obsolete structures.
* Implemented Cisco-SLARP.
* Changed local net-interface data to be dynamically allocated.
* Removed old 2.0 compatibility stuff.
*
* Revision 1.46 1997/10/01 09:20:27 fritz
* Removed old compatibility stuff for 2.0.X kernels.
* From now on, this code is for 2.1.X ONLY!
* Old stuff is still in the separate branch.
*
* Revision 1.45 1997/08/21 23:11:41 fritz
* Added changes for kernels >= 2.1.45
*
* Revision 1.44 1997/05/27 15:17:23 fritz
* Added changes for recent 2.1.x kernels:
* changed return type of isdn_close
* queue_task_* -> queue_task
* clear/set_bit -> test_and_... where apropriate.
* changed type of hard_header_cache parameter.
*
* Revision 1.43 1997/03/31 14:09:43 fritz
* Fixed memory leak in isdn_close().
*
* Revision 1.42 1997/03/30 16:51:08 calle
* changed calls to copy_from_user/copy_to_user and removed verify_area
* were possible.
*
* Revision 1.41 1997/03/24 22:54:41 fritz
* Some small fixes in debug code.
*
* Revision 1.40 1997/03/08 08:13:51 fritz
* Bugfix: IIOCSETMAP (Set mapping) was broken.
*
* Revision 1.39 1997/03/07 01:32:54 fritz
* Added proper ifdef's for CONFIG_ISDN_AUDIO
*
* Revision 1.38 1997/03/05 21:15:02 fritz
* Fix: reduced stack usage of isdn_ioctl() and isdn_set_allcfg()
*
* Revision 1.37 1997/03/02 14:29:18 fritz
* More ttyI related cleanup.
*
* Revision 1.36 1997/02/28 02:32:40 fritz
* Cleanup: Moved some tty related stuff from isdn_common.c
* to isdn_tty.c
* Bugfix: Bisync protocol did not behave like documented.
*
* Revision 1.35 1997/02/21 13:01:19 fritz
* Changes CAUSE message output in kernel log.
*
* Revision 1.34 1997/02/10 20:12:43 fritz
* Changed interface for reporting incoming calls.
*
* Revision 1.33 1997/02/10 10:05:42 fritz
* More changes for Kernel 2.1.X
* Symbol information moved to isdn_syms.c
*
* Revision 1.32 1997/02/03 22:55:26 fritz
* Reformatted according CodingStyle.
* Changed isdn_writebuf_stub static.
* Slow down tty-RING counter.
* skb->free stuff replaced by macro.
* Bugfix in audio-skb locking.
* Bugfix in HL-driver locking.
*
* Revision 1.31 1997/01/17 01:19:18 fritz
* Applied chargeint patch.
*
* Revision 1.30 1997/01/14 01:27:47 fritz
* Changed audio receive not to rely on skb->users and skb->lock.
* Added ATI2 and related variables.
* Started adding full-duplex audio capability.
*
* Revision 1.29 1997/01/12 23:33:03 fritz
* Made isdn_all_eaz foolproof.
*
* Revision 1.28 1996/11/13 02:33:19 fritz
* Fixed a race condition.
*
* Revision 1.27 1996/10/27 22:02:41 keil
* return codes for ISDN_STAT_ICALL
*
* Revision 1.26 1996/10/23 11:59:40 fritz
* More compatibility changes.
*
* Revision 1.25 1996/10/22 23:13:54 fritz
* Changes for compatibility to 2.0.X and 2.1.X kernels.
*
* Revision 1.24 1996/10/11 14:02:03 fritz
* Bugfix: call to isdn_ppp_timer_timeout() never compiled, because of
* typo in #ifdef.
*
* Revision 1.23 1996/06/25 18:35:38 fritz
* Fixed bogus memory access in isdn_set_allcfg().
*
* Revision 1.22 1996/06/24 17:37:37 fritz
* Bugfix: isdn_timer_ctrl() did restart timer, even if it
* was already running.
* lowlevel driver locking did use wrong parameters.
*
* Revision 1.21 1996/06/15 14:58:20 fritz
* Added version signatures for data structures used
* by userlevel programs.
*
* Revision 1.20 1996/06/12 16:01:49 fritz
* Bugfix: Remote B-channel hangup sometimes did not result
* in a NO CARRIER on tty.
*
* Revision 1.19 1996/06/11 14:52:04 hipp
* minor bugfix in isdn_writebuf_skb_stub()
*
* Revision 1.18 1996/06/06 14:51:51 fritz
* Changed to support DTMF decoding on audio playback also.
*
* Revision 1.17 1996/06/05 02:24:10 fritz
* Added DTMF decoder for audio mode.
*
* Revision 1.16 1996/06/03 20:09:05 fritz
* Bugfix: called wrong function pointer for locking in
* isdn_get_free_channel().
*
* Revision 1.15 1996/05/31 01:10:54 fritz
* Bugfixes:
* Lowlevel modules did not get locked correctly.
* Did show wrong revision when initializing.
* Minor fixes in ioctl code.
* sk_buff did not get freed, if error in writebuf_stub.
*
* Revision 1.14 1996/05/18 01:36:55 fritz
* Added spelling corrections and some minor changes
* to stay in sync with kernel.
*
* Revision 1.13 1996/05/17 15:43:30 fritz
* Bugfix: decrement of rcvcount in readbchan() corrected.
*
* Revision 1.12 1996/05/17 03:55:43 fritz
* Changed DLE handling for audio receive.
* Some cleanup.
* Added display of isdn_audio_revision.
*
* Revision 1.11 1996/05/11 21:51:32 fritz
* Changed queue management to use sk_buffs.
*
* Revision 1.10 1996/05/10 08:49:16 fritz
* Checkin before major changes of tty-code.
*
* Revision 1.9 1996/05/07 09:19:41 fritz
* Adapted to changes in isdn_tty.c
*
* Revision 1.8 1996/05/06 11:34:51 hipp
* fixed a few bugs
*
* Revision 1.7 1996/05/02 03:55:17 fritz
* Bugfixes:
* - B-channel connect message for modem devices
* sometimes did not result in a CONNECT-message.
* - register_isdn did not check for driverId-conflicts.
*
* Revision 1.6 1996/04/30 20:57:21 fritz
* Commit test
*
* Revision 1.5 1996/04/20 16:19:07 fritz
* Changed slow timer handlers to increase accuracy.
* Added statistic information for usage by xisdnload.
* Fixed behaviour of isdnctrl-device on non-blocked io.
* Fixed all io to go through generic writebuf-function without
* bypassing. Same for incoming data.
* Fixed bug: Last channel had been unusable.
* Fixed kfree of tty xmit_buf on ppp initialization failure.
*
* Revision 1.4 1996/02/11 02:33:26 fritz
* Fixed bug in main timer-dispatcher.
* Bugfix: Lot of tty-callbacks got called regardless of the events already
* been handled by network-devices.
* Changed ioctl-names.
*
* Revision 1.3 1996/01/22 05:16:11 fritz
* Changed ioctl-names.
* Fixed bugs in isdn_open and isdn_close regarding PPP_MINOR.
*
* Revision 1.2 1996/01/21 16:52:40 fritz
* Support for sk_buffs added, changed header-stuffing.
*
* Revision 1.1 1996/01/09 04:12:52 fritz
* Initial revision
*
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/version.h>
#include <linux/poll.h>
#include <linux/vmalloc.h>
#include <linux/isdn.h>
#include "isdn_common.h"
#include "isdn_tty.h"
#include "isdn_net.h"
#include "isdn_ppp.h"
#ifdef CONFIG_ISDN_AUDIO
#include "isdn_audio.h"
#endif
#ifdef CONFIG_ISDN_DIVERSION
#include <linux/isdn_divertif.h>
#endif CONFIG_ISDN_DIVERSION
#include "isdn_v110.h"
#include "isdn_cards.h"
/* Debugflags */
#undef ISDN_DEBUG_STATCALLB
isdn_dev *dev = (isdn_dev *) 0;
static char *isdn_revision = "$Revision$";
extern char *isdn_net_revision;
extern char *isdn_tty_revision;
#ifdef CONFIG_ISDN_PPP
extern char *isdn_ppp_revision;
#else
static char *isdn_ppp_revision = ": none $";
#endif
#ifdef CONFIG_ISDN_AUDIO
extern char *isdn_audio_revision;
#else
static char *isdn_audio_revision = ": none $";
#endif
extern char *isdn_v110_revision;
#ifdef CONFIG_ISDN_DIVERSION
isdn_divert_if *divert_if = NULL; /* interface to diversion module */
#endif CONFIG_ISDN_DIVERSION
static int isdn_writebuf_stub(int, int, const u_char *, int, int);
void
isdn_MOD_INC_USE_COUNT(void)
{
int i;
MOD_INC_USE_COUNT;
for (i = 0; i < dev->drivers; i++) {
isdn_ctrl cmd;
cmd.driver = i;
cmd.arg = 0;
cmd.command = ISDN_CMD_LOCK;
isdn_command(&cmd);
dev->drv[i]->locks++;
}
}
void
isdn_MOD_DEC_USE_COUNT(void)
{
int i;
MOD_DEC_USE_COUNT;
for (i = 0; i < dev->drivers; i++)
if (dev->drv[i]->locks > 0) {
isdn_ctrl cmd;
cmd.driver = i;
cmd.arg = 0;
cmd.command = ISDN_CMD_UNLOCK;
isdn_command(&cmd);
dev->drv[i]->locks--;
}
}
#if defined(ISDN_DEBUG_NET_DUMP) || defined(ISDN_DEBUG_MODEM_DUMP)
void
isdn_dumppkt(char *s, u_char * p, int len, int dumplen)
{
int dumpc;
printk(KERN_DEBUG "%s(%d) ", s, len);
for (dumpc = 0; (dumpc < dumplen) && (len); len--, dumpc++)
printk(" %02x", *p++);
printk("\n");
}
#endif
/*
* I picked the pattern-matching-functions from an old GNU-tar version (1.10)
* It was originally written and put to PD by rs@mirror.TMC.COM (Rich Salz)
*/
static int
isdn_star(char *s, char *p)
{
while (isdn_wildmat(s, p)) {
if (*++s == '\0')
return (2);
}
return (0);
}
/*
* Shell-type Pattern-matching for incoming caller-Ids
* This function gets a string in s and checks, if it matches the pattern
* given in p.
*
* Return:
* 0 = match.
* 1 = no match.
* 2 = no match. Would eventually match, if s would be longer.
*
* Possible Patterns:
*
* '?' matches one character
* '*' matches zero or more characters
* [xyz] matches the set of characters in brackets.
* [^xyz] matches any single character not in the set of characters
*/
int
isdn_wildmat(char *s, char *p)
{
register int last;
register int matched;
register int reverse;
register int nostar = 1;
if (!(*s) && !(*p))
return(1);
for (; *p; s++, p++)
switch (*p) {
case '\\':
/*
* Literal match with following character,
* fall through.
*/
p++;
default:
if (*s != *p)
return (*s == '\0')?2:1;
continue;
case '?':
/* Match anything. */
if (*s == '\0')
return (2);
continue;
case '*':
nostar = 0;
/* Trailing star matches everything. */
return (*++p ? isdn_star(s, p) : 0);
case '[':
/* [^....] means inverse character class. */
if ((reverse = (p[1] == '^')))
p++;
for (last = 0, matched = 0; *++p && (*p != ']'); last = *p)
/* This next line requires a good C compiler. */
if (*p == '-' ? *s <= *++p && *s >= last : *s == *p)
matched = 1;
if (matched == reverse)
return (1);
continue;
}
return (*s == '\0')?0:nostar;
}
static void
isdn_free_queue(struct sk_buff_head *queue)
{
struct sk_buff *skb;
unsigned long flags;
save_flags(flags);
cli();
if (skb_queue_len(queue))
while ((skb = skb_dequeue(queue)))
dev_kfree_skb(skb);
restore_flags(flags);
}
int
isdn_dc2minor(int di, int ch)
{
int i;
for (i = 0; i < ISDN_MAX_CHANNELS; i++)
if (dev->chanmap[i] == ch && dev->drvmap[i] == di)
return i;
return -1;
}
static int isdn_timer_cnt1 = 0;
static int isdn_timer_cnt2 = 0;
static int isdn_timer_cnt3 = 0;
static int isdn_timer_cnt4 = 0;
static void
isdn_timer_funct(ulong dummy)
{
int tf = dev->tflags;
if (tf & ISDN_TIMER_FAST) {
if (tf & ISDN_TIMER_MODEMREAD)
isdn_tty_readmodem();
if (tf & ISDN_TIMER_MODEMPLUS)
isdn_tty_modem_escape();
if (tf & ISDN_TIMER_MODEMXMIT)
isdn_tty_modem_xmit();
}
if (tf & ISDN_TIMER_SLOW) {
if (++isdn_timer_cnt1 >= ISDN_TIMER_02SEC) {
isdn_timer_cnt1 = 0;
if (tf & ISDN_TIMER_NETDIAL)
isdn_net_dial();
}
if (++isdn_timer_cnt2 >= ISDN_TIMER_1SEC) {
isdn_timer_cnt2 = 0;
if (tf & ISDN_TIMER_NETHANGUP)
isdn_net_autohup();
if (++isdn_timer_cnt3 > ISDN_TIMER_RINGING) {
isdn_timer_cnt3 = 0;
if (tf & ISDN_TIMER_MODEMRING)
isdn_tty_modem_ring();
}
if (++isdn_timer_cnt4 > ISDN_TIMER_KEEPINT) {
isdn_timer_cnt4 = 0;
if (tf & ISDN_TIMER_KEEPALIVE)
isdn_net_slarp_out();
}
if (tf & ISDN_TIMER_CARRIER)
isdn_tty_carrier_timeout();
#if (defined CONFIG_ISDN_PPP) && (defined CONFIG_ISDN_MPP)
if (tf & ISDN_TIMER_IPPP)
isdn_ppp_timer_timeout();
#endif
}
}
if (tf)
{
int flags;
save_flags(flags);
cli();
del_timer(&dev->timer);
dev->timer.expires = jiffies + ISDN_TIMER_RES;
add_timer(&dev->timer);
restore_flags(flags);
}
}
void
isdn_timer_ctrl(int tf, int onoff)
{
int flags;
save_flags(flags);
cli();
if ((tf & ISDN_TIMER_SLOW) && (!(dev->tflags & ISDN_TIMER_SLOW))) {
/* If the slow-timer wasn't activated until now */
isdn_timer_cnt1 = 0;
isdn_timer_cnt2 = 0;
}
if (onoff)
dev->tflags |= tf;
else
dev->tflags &= ~tf;
if (dev->tflags) {
if (!del_timer(&dev->timer)) /* del_timer is 1, when active */
dev->timer.expires = jiffies + ISDN_TIMER_RES;
add_timer(&dev->timer);
}
restore_flags(flags);
}
/*
* Receive a packet from B-Channel. (Called from low-level-module)
*/
static void
isdn_receive_skb_callback(int di, int channel, struct sk_buff *skb)
{
int i;
if ((i = isdn_dc2minor(di, channel)) == -1) {
dev_kfree_skb(skb);
return;
}
/* Update statistics */
dev->ibytes[i] += skb->len;
/* First, try to deliver data to network-device */
if (isdn_net_rcv_skb(i, skb))
return;
/* V.110 handling
* makes sense for async streams only, so it is
* called after possible net-device delivery.
*/
if (dev->v110[i]) {
atomic_inc(&dev->v110use[i]);
skb = isdn_v110_decode(dev->v110[i], skb);
atomic_dec(&dev->v110use[i]);
if (!skb)
return;
}
/* No network-device found, deliver to tty or raw-channel */
if (skb->len) {
if (isdn_tty_rcv_skb(i, di, channel, skb))
return;
wake_up_interruptible(&dev->drv[di]->rcv_waitq[channel]);
} else
dev_kfree_skb(skb);
}
/*
* Intercept command from Linklevel to Lowlevel.
* If layer 2 protocol is V.110 and this is not supported by current
* lowlevel-driver, use driver's transparent mode and handle V.110 in
* linklevel instead.
*/
int
isdn_command(isdn_ctrl *cmd)
{
if (cmd->command == ISDN_CMD_SETL2) {
int idx = isdn_dc2minor(cmd->driver, cmd->arg & 255);
unsigned long l2prot = (cmd->arg >> 8) & 255;
unsigned long features = (dev->drv[cmd->driver]->interface->features
>> ISDN_FEATURE_L2_SHIFT) &
ISDN_FEATURE_L2_MASK;
unsigned long l2_feature = (1 << l2prot);
switch (l2prot) {
case ISDN_PROTO_L2_V11096:
case ISDN_PROTO_L2_V11019:
case ISDN_PROTO_L2_V11038:
/* If V.110 requested, but not supported by
* HL-driver, set emulator-flag and change
* Layer-2 to transparent
*/
if (!(features & l2_feature)) {
dev->v110emu[idx] = l2prot;
cmd->arg = (cmd->arg & 255) |
(ISDN_PROTO_L2_TRANS << 8);
} else
dev->v110emu[idx] = 0;
}
}
return dev->drv[cmd->driver]->interface->command(cmd);
}
void
isdn_all_eaz(int di, int ch)
{
isdn_ctrl cmd;
if (di < 0)
return;
cmd.driver = di;
cmd.arg = ch;
cmd.command = ISDN_CMD_SETEAZ;
cmd.parm.num[0] = '\0';
isdn_command(&cmd);
}
/*
* Begin of a CAPI like LL<->HL interface, currently used only for
* supplementary service (CAPI 2.0 part III)
*/
#include "avmb1/capicmd.h" /* this should be moved in a common place */
int
isdn_capi_rec_hl_msg(capi_msg *cm) {
int di;
int ch;
di = (cm->adr.Controller & 0x7f) -1;
ch = isdn_dc2minor(di, (cm->adr.Controller>>8)& 0x7f);
switch(cm->Command) {
case CAPI_FACILITY:
/* in the moment only handled in tty */
return(isdn_tty_capi_facility(cm));
default:
return(-1);
}
}
static int
isdn_status_callback(isdn_ctrl * c)
{
int di;
ulong flags;
int i;
int r;
int retval = 0;
isdn_ctrl cmd;
di = c->driver;
i = isdn_dc2minor(di, c->arg);
switch (c->command) {
case ISDN_STAT_BSENT:
if (i < 0)
return -1;
if (dev->global_flags & ISDN_GLOBAL_STOPPED)
return 0;
if (isdn_net_stat_callback(i, c))
return 0;
if (isdn_v110_stat_callback(i, c))
return 0;
if (isdn_tty_stat_callback(i, c))
return 0;
wake_up_interruptible(&dev->drv[di]->snd_waitq[c->arg]);
break;
case ISDN_STAT_STAVAIL:
save_flags(flags);
cli();
dev->drv[di]->stavail += c->arg;
restore_flags(flags);
wake_up_interruptible(&dev->drv[di]->st_waitq);
break;
case ISDN_STAT_RUN:
dev->drv[di]->flags |= DRV_FLAG_RUNNING;
for (i = 0; i < ISDN_MAX_CHANNELS; i++)
if (dev->drvmap[i] == di)
isdn_all_eaz(di, dev->chanmap[i]);
break;
case ISDN_STAT_STOP:
dev->drv[di]->flags &= ~DRV_FLAG_RUNNING;
break;
case ISDN_STAT_ICALL:
if (i < 0)
return -1;
#ifdef ISDN_DEBUG_STATCALLB
printk(KERN_DEBUG "ICALL (net): %d %ld %s\n", di, c->arg, c->parm.num);
#endif
if (dev->global_flags & ISDN_GLOBAL_STOPPED) {
cmd.driver = di;
cmd.arg = c->arg;
cmd.command = ISDN_CMD_HANGUP;
isdn_command(&cmd);
return 0;
}
/* Try to find a network-interface which will accept incoming call */
r = ((c->command == ISDN_STAT_ICALLW) ? 0 : isdn_net_find_icall(di, c->arg, i, c->parm.setup));
switch (r) {
case 0:
/* No network-device replies.
* Try ttyI's.
* These return 0 on no match, 1 on match and
* 3 on eventually match, if CID is longer.
*/
if (c->command == ISDN_STAT_ICALL)
if ((retval = isdn_tty_find_icall(di, c->arg, c->parm.setup))) return(retval);
#ifdef CONFIG_ISDN_DIVERSION
if (divert_if)
if ((retval = divert_if->stat_callback(c)))
return(retval); /* processed */
#endif CONFIG_ISDN_DIVERSION
if ((!retval) && (dev->drv[di]->flags & DRV_FLAG_REJBUS)) {
/* No tty responding */
cmd.driver = di;
cmd.arg = c->arg;
cmd.command = ISDN_CMD_HANGUP;
isdn_command(&cmd);
retval = 2;
}
break;
case 1:
/* Schedule connection-setup */
isdn_net_dial();
cmd.driver = di;
cmd.arg = c->arg;
cmd.command = ISDN_CMD_ACCEPTD;
isdn_command(&cmd);
retval = 1;
break;
case 2: /* For calling back, first reject incoming call ... */
case 3: /* Interface found, but down, reject call actively */
retval = 2;
printk(KERN_INFO "isdn: Rejecting Call\n");
cmd.driver = di;
cmd.arg = c->arg;
cmd.command = ISDN_CMD_HANGUP;
isdn_command(&cmd);
if (r == 3)
break;
/* Fall through */
case 4:
/* ... then start callback. */
isdn_net_dial();
break;
case 5:
/* Number would eventually match, if longer */
retval = 3;
break;
}
#ifdef ISDN_DEBUG_STATCALLB
printk(KERN_DEBUG "ICALL: ret=%d\n", retval);
#endif
return retval;
break;
case ISDN_STAT_CINF:
if (i < 0)
return -1;
#ifdef ISDN_DEBUG_STATCALLB
printk(KERN_DEBUG "CINF: %ld %s\n", c->arg, c->parm.num);
#endif
if (dev->global_flags & ISDN_GLOBAL_STOPPED)
return 0;
if (strcmp(c->parm.num, "0"))
isdn_net_stat_callback(i, c);
isdn_tty_stat_callback(i, c);
break;
case ISDN_STAT_CAUSE:
#ifdef ISDN_DEBUG_STATCALLB
printk(KERN_DEBUG "CAUSE: %ld %s\n", c->arg, c->parm.num);
#endif
printk(KERN_INFO "isdn: %s,ch%ld cause: %s\n",
dev->drvid[di], c->arg, c->parm.num);
isdn_tty_stat_callback(i, c);
#ifdef CONFIG_ISDN_DIVERSION
if (divert_if)
divert_if->stat_callback(c);
#endif CONFIG_ISDN_DIVERSION
break;
case ISDN_STAT_DISPLAY:
#ifdef ISDN_DEBUG_STATCALLB
printk(KERN_DEBUG "DISPLAY: %ld %s\n", c->arg, c->parm.display);
#endif
isdn_tty_stat_callback(i, c);
#ifdef CONFIG_ISDN_DIVERSION
if (divert_if)
divert_if->stat_callback(c);
#endif CONFIG_ISDN_DIVERSION
break;
case ISDN_STAT_DCONN:
if (i < 0)
return -1;
#ifdef ISDN_DEBUG_STATCALLB
printk(KERN_DEBUG "DCONN: %ld\n", c->arg);
#endif
if (dev->global_flags & ISDN_GLOBAL_STOPPED)
return 0;
/* Find any net-device, waiting for D-channel setup */
if (isdn_net_stat_callback(i, c))
break;
isdn_v110_stat_callback(i, c);
/* Find any ttyI, waiting for D-channel setup */
if (isdn_tty_stat_callback(i, c)) {
cmd.driver = di;
cmd.arg = c->arg;
cmd.command = ISDN_CMD_ACCEPTB;
isdn_command(&cmd);
break;
}
break;
case ISDN_STAT_DHUP:
if (i < 0)
return -1;
#ifdef ISDN_DEBUG_STATCALLB
printk(KERN_DEBUG "DHUP: %ld\n", c->arg);
#endif
if (dev->global_flags & ISDN_GLOBAL_STOPPED)
return 0;
dev->drv[di]->online &= ~(1 << (c->arg));
isdn_info_update();
/* Signal hangup to network-devices */
if (isdn_net_stat_callback(i, c))
break;
isdn_v110_stat_callback(i, c);
if (isdn_tty_stat_callback(i, c))
break;
#ifdef CONFIG_ISDN_DIVERSION
if (divert_if)
divert_if->stat_callback(c);
#endif CONFIG_ISDN_DIVERSION
break;
break;
case ISDN_STAT_BCONN:
if (i < 0)
return -1;
#ifdef ISDN_DEBUG_STATCALLB
printk(KERN_DEBUG "BCONN: %ld\n", c->arg);
#endif
/* Signal B-channel-connect to network-devices */
if (dev->global_flags & ISDN_GLOBAL_STOPPED)
return 0;
dev->drv[di]->online |= (1 << (c->arg));
isdn_info_update();
if (isdn_net_stat_callback(i, c))
break;
isdn_v110_stat_callback(i, c);
if (isdn_tty_stat_callback(i, c))
break;
break;
case ISDN_STAT_BHUP:
if (i < 0)
return -1;
#ifdef ISDN_DEBUG_STATCALLB
printk(KERN_DEBUG "BHUP: %ld\n", c->arg);
#endif
if (dev->global_flags & ISDN_GLOBAL_STOPPED)
return 0;
dev->drv[di]->online &= ~(1 << (c->arg));
isdn_info_update();
#ifdef CONFIG_ISDN_X25
/* Signal hangup to network-devices */
if (isdn_net_stat_callback(i, c))
break;
#endif
isdn_v110_stat_callback(i, c);
if (isdn_tty_stat_callback(i, c))
break;
break;
case ISDN_STAT_NODCH:
if (i < 0)
return -1;
#ifdef ISDN_DEBUG_STATCALLB
printk(KERN_DEBUG "NODCH: %ld\n", c->arg);
#endif
if (dev->global_flags & ISDN_GLOBAL_STOPPED)
return 0;
if (isdn_net_stat_callback(i, c))
break;
if (isdn_tty_stat_callback(i, c))
break;
break;
case ISDN_STAT_ADDCH:
if (isdn_add_channels(dev->drv[di], di, c->arg, 1))
return -1;
isdn_info_update();
break;
case ISDN_STAT_DISCH:
save_flags(flags);
cli();
for (i = 0; i < ISDN_MAX_CHANNELS; i++)
if ((dev->drvmap[i] == di) &&
(dev->chanmap[i] == c->arg)) {
if (c->parm.num[0])
dev->usage[i] &= ~ISDN_USAGE_DISABLED;
else
if (USG_NONE(dev->usage[i])) {
dev->usage[i] |= ISDN_USAGE_DISABLED;
}
else
retval = -1;
break;
}
restore_flags(flags);
isdn_info_update();
break;
case ISDN_STAT_UNLOAD:
while (dev->drv[di]->locks > 0) {
isdn_ctrl cmd;
cmd.driver = di;
cmd.arg = 0;
cmd.command = ISDN_CMD_UNLOCK;
isdn_command(&cmd);
dev->drv[di]->locks--;
}
save_flags(flags);
cli();
isdn_tty_stat_callback(i, c);
for (i = 0; i < ISDN_MAX_CHANNELS; i++)
if (dev->drvmap[i] == di) {
dev->drvmap[i] = -1;
dev->chanmap[i] = -1;
dev->usage[i] &= ~ISDN_USAGE_DISABLED;
}
dev->drivers--;
dev->channels -= dev->drv[di]->channels;
kfree(dev->drv[di]->rcverr);
kfree(dev->drv[di]->rcvcount);
for (i = 0; i < dev->drv[di]->channels; i++)
isdn_free_queue(&dev->drv[di]->rpqueue[i]);
kfree(dev->drv[di]->rpqueue);
kfree(dev->drv[di]->rcv_waitq);
#ifndef COMPAT_HAS_NEW_WAITQ
kfree(dev->drv[di]->snd_waitq);
#endif
kfree(dev->drv[di]);
dev->drv[di] = NULL;
dev->drvid[di][0] = '\0';
isdn_info_update();
restore_flags(flags);
return 0;
case ISDN_STAT_L1ERR:
break;
case CAPI_PUT_MESSAGE:
return(isdn_capi_rec_hl_msg(&c->parm.cmsg));
#ifdef CONFIG_ISDN_TTY_FAX
case ISDN_STAT_FAXIND:
isdn_tty_stat_callback(i, c);
break;
#endif
#ifdef CONFIG_ISDN_AUDIO
case ISDN_STAT_AUDIO:
isdn_tty_stat_callback(i, c);
break;
#endif
#ifdef CONFIG_ISDN_DIVERSION
case ISDN_STAT_PROT:
case ISDN_STAT_REDIR:
if (divert_if)
return(divert_if->stat_callback(c));
#endif CONFIG_ISDN_DIVERSION
default:
return -1;
}
return 0;
}
/*
* Get integer from char-pointer, set pointer to end of number
*/
int
isdn_getnum(char **p)
{
int v = -1;
while (*p[0] >= '0' && *p[0] <= '9')
v = ((v < 0) ? 0 : (v * 10)) + (int) ((*p[0]++) - '0');
return v;
}
#define DLE 0x10
/*
* isdn_readbchan() tries to get data from the read-queue.
* It MUST be called with interrupts off.
*
* Be aware that this is not an atomic operation when sleep != 0, even though
* interrupts are turned off! Well, like that we are currently only called
* on behalf of a read system call on raw device files (which are documented
* to be dangerous and for for debugging purpose only). The inode semaphore
* takes care that this is not called for the same minor device number while
* we are sleeping, but access is not serialized against simultaneous read()
* from the corresponding ttyI device. Can other ugly events, like changes
* of the mapping (di,ch)<->minor, happen during the sleep? --he
*/
int
#ifdef COMPAT_HAS_NEW_WAITQ
isdn_readbchan(int di, int channel, u_char * buf, u_char * fp, int len, wait_queue_head_t *sleep)
#else
isdn_readbchan(int di, int channel, u_char * buf, u_char * fp, int len, struct wait_queue **sleep)
#endif
{
int left;
int count;
int count_pull;
int count_put;
int dflag;
struct sk_buff *skb;
u_char *cp;
if (!dev->drv[di])
return 0;
if (skb_queue_empty(&dev->drv[di]->rpqueue[channel])) {
if (sleep)
interruptible_sleep_on(sleep);
else
return 0;
}
left = MIN(len, dev->drv[di]->rcvcount[channel]);
cp = buf;
count = 0;
while (left) {
if (!(skb = skb_peek(&dev->drv[di]->rpqueue[channel])))
break;
#ifdef CONFIG_ISDN_AUDIO
if (ISDN_AUDIO_SKB_LOCK(skb))
break;
ISDN_AUDIO_SKB_LOCK(skb) = 1;
if ((ISDN_AUDIO_SKB_DLECOUNT(skb)) || (dev->drv[di]->DLEflag & (1 << channel))) {
char *p = skb->data;
unsigned long DLEmask = (1 << channel);
dflag = 0;
count_pull = count_put = 0;
while ((count_pull < skb->len) && (left > 0)) {
left--;
if (dev->drv[di]->DLEflag & DLEmask) {
*cp++ = DLE;
dev->drv[di]->DLEflag &= ~DLEmask;
} else {
*cp++ = *p;
if (*p == DLE) {
dev->drv[di]->DLEflag |= DLEmask;
(ISDN_AUDIO_SKB_DLECOUNT(skb))--;
}
p++;
count_pull++;
}
count_put++;
}
if (count_pull >= skb->len)
dflag = 1;
} else {
#endif
/* No DLE's in buff, so simply copy it */
dflag = 1;
if ((count_pull = skb->len) > left) {
count_pull = left;
dflag = 0;
}
count_put = count_pull;
memcpy(cp, skb->data, count_put);
cp += count_put;
left -= count_put;
#ifdef CONFIG_ISDN_AUDIO
}
#endif
count += count_put;
if (fp) {
memset(fp, 0, count_put);
fp += count_put;
}
if (dflag) {
/* We got all the data in this buff.
* Now we can dequeue it.
*/
if (fp)
*(fp - 1) = 0xff;
#ifdef CONFIG_ISDN_AUDIO
ISDN_AUDIO_SKB_LOCK(skb) = 0;
#endif
skb = skb_dequeue(&dev->drv[di]->rpqueue[channel]);
dev_kfree_skb(skb);
} else {
/* Not yet emptied this buff, so it
* must stay in the queue, for further calls
* but we pull off the data we got until now.
*/
skb_pull(skb, count_pull);
#ifdef CONFIG_ISDN_AUDIO
ISDN_AUDIO_SKB_LOCK(skb) = 0;
#endif
}
dev->drv[di]->rcvcount[channel] -= count_put;
}
return count;
}
static __inline int
isdn_minor2drv(int minor)
{
return (dev->drvmap[minor]);
}
static __inline int
isdn_minor2chan(int minor)
{
return (dev->chanmap[minor]);
}
static char *
isdn_statstr(void)
{
static char istatbuf[2048];
char *p;
int i;
sprintf(istatbuf, "idmap:\t");
p = istatbuf + strlen(istatbuf);
for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
sprintf(p, "%s ", (dev->drvmap[i] < 0) ? "-" : dev->drvid[dev->drvmap[i]]);
p = istatbuf + strlen(istatbuf);
}
sprintf(p, "\nchmap:\t");
p = istatbuf + strlen(istatbuf);
for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
sprintf(p, "%d ", dev->chanmap[i]);
p = istatbuf + strlen(istatbuf);
}
sprintf(p, "\ndrmap:\t");
p = istatbuf + strlen(istatbuf);
for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
sprintf(p, "%d ", dev->drvmap[i]);
p = istatbuf + strlen(istatbuf);
}
sprintf(p, "\nusage:\t");
p = istatbuf + strlen(istatbuf);
for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
sprintf(p, "%d ", dev->usage[i]);
p = istatbuf + strlen(istatbuf);
}
sprintf(p, "\nflags:\t");
p = istatbuf + strlen(istatbuf);
for (i = 0; i < ISDN_MAX_DRIVERS; i++) {
if (dev->drv[i]) {
sprintf(p, "%ld ", dev->drv[i]->online);
p = istatbuf + strlen(istatbuf);
} else {
sprintf(p, "? ");
p = istatbuf + strlen(istatbuf);
}
}
sprintf(p, "\nphone:\t");
p = istatbuf + strlen(istatbuf);
for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
sprintf(p, "%s ", dev->num[i]);
p = istatbuf + strlen(istatbuf);
}
sprintf(p, "\n");
return istatbuf;
}
/* Module interface-code */
void
isdn_info_update(void)
{
infostruct *p = dev->infochain;
while (p) {
*(p->private) = 1;
p = (infostruct *) p->next;
}
wake_up_interruptible(&(dev->info_waitq));
}
static ssize_t
isdn_read(struct file *file, char *buf, size_t count, loff_t * off)
{
uint minor = MINOR(file->f_dentry->d_inode->i_rdev);
int len = 0;
ulong flags;
int drvidx;
int chidx;
char *p;
if (off != &file->f_pos)
return -ESPIPE;
if (minor == ISDN_MINOR_STATUS) {
if (!file->private_data) {
if (file->f_flags & O_NONBLOCK)
return -EAGAIN;
interruptible_sleep_on(&(dev->info_waitq));
}
p = isdn_statstr();
file->private_data = 0;
if ((len = strlen(p)) <= count) {
if (copy_to_user(buf, p, len))
return -EFAULT;
*off += len;
return len;
}
return 0;
}
if (!dev->drivers)
return -ENODEV;
if (minor < ISDN_MINOR_CTRL) {
drvidx = isdn_minor2drv(minor);
if (drvidx < 0)
return -ENODEV;
if (!(dev->drv[drvidx]->flags & DRV_FLAG_RUNNING))
return -ENODEV;
chidx = isdn_minor2chan(minor);
if( ! (p = kmalloc(count,GFP_KERNEL)) ) return -ENOMEM;
save_flags(flags);
cli();
len = isdn_readbchan(drvidx, chidx, p, 0, count,
&dev->drv[drvidx]->rcv_waitq[chidx]);
*off += len;
restore_flags(flags);
if( copy_to_user(buf,p,len) ) len = -EFAULT;
kfree(p);
return len;
}
if (minor <= ISDN_MINOR_CTRLMAX) {
drvidx = isdn_minor2drv(minor - ISDN_MINOR_CTRL);
if (drvidx < 0)
return -ENODEV;
if (!dev->drv[drvidx]->stavail) {
if (file->f_flags & O_NONBLOCK)
return -EAGAIN;
interruptible_sleep_on(&(dev->drv[drvidx]->st_waitq));
}
#ifdef CONFIG_ISDN_WITH_ABC_LCR_SUPPORT
if(drvidx || (len = isdn_dw_abc_lcr_readstat(buf,count)) < 1) {
#endif
if (dev->drv[drvidx]->interface->readstat)
len = dev->drv[drvidx]->interface->
readstat(buf, MIN(count, dev->drv[drvidx]->stavail),
1, drvidx, isdn_minor2chan(minor));
else
len = 0;
#ifdef CONFIG_ISDN_WITH_ABC_LCR_SUPPORT
}
#endif
save_flags(flags);
cli();
if (len)
dev->drv[drvidx]->stavail -= len;
else
dev->drv[drvidx]->stavail = 0;
restore_flags(flags);
*off += len;
return len;
}
#ifdef CONFIG_ISDN_PPP
if (minor <= ISDN_MINOR_PPPMAX)
return (isdn_ppp_read(minor - ISDN_MINOR_PPP, file, buf, count));
#endif
return -ENODEV;
}
static loff_t
isdn_lseek(struct file *file, loff_t offset, int orig)
{
return -ESPIPE;
}
static ssize_t
isdn_write(struct file *file, const char *buf, size_t count, loff_t * off)
{
uint minor = MINOR(file->f_dentry->d_inode->i_rdev);
int drvidx;
int chidx;
if (off != &file->f_pos)
return -ESPIPE;
if (minor == ISDN_MINOR_STATUS)
return -EPERM;
if (!dev->drivers)
return -ENODEV;
if (minor < ISDN_MINOR_CTRL) {
drvidx = isdn_minor2drv(minor);
if (drvidx < 0)
return -ENODEV;
if (!(dev->drv[drvidx]->flags & DRV_FLAG_RUNNING))
return -ENODEV;
chidx = isdn_minor2chan(minor);
while (isdn_writebuf_stub(drvidx, chidx, buf, count, 1) != count)
interruptible_sleep_on(&dev->drv[drvidx]->snd_waitq[chidx]);
return count;
}
if (minor <= ISDN_MINOR_CTRLMAX) {
drvidx = isdn_minor2drv(minor - ISDN_MINOR_CTRL);
if (drvidx < 0)
return -ENODEV;
/*
* We want to use the isdnctrl device to load the firmware
*
if (!(dev->drv[drvidx]->flags & DRV_FLAG_RUNNING))
return -ENODEV;
*/
if (dev->drv[drvidx]->interface->writecmd)
return (dev->drv[drvidx]->interface->
writecmd(buf, count, 1, drvidx, isdn_minor2chan(minor)));
else
return count;
}
#ifdef CONFIG_ISDN_PPP
if (minor <= ISDN_MINOR_PPPMAX)
return (isdn_ppp_write(minor - ISDN_MINOR_PPP, file, buf, count));
#endif
return -ENODEV;
}
static unsigned int
isdn_poll(struct file *file, poll_table * wait)
{
unsigned int mask = 0;
unsigned int minor = MINOR(file->f_dentry->d_inode->i_rdev);
int drvidx = isdn_minor2drv(minor - ISDN_MINOR_CTRL);
if (minor == ISDN_MINOR_STATUS) {
poll_wait(file, &(dev->info_waitq), wait);
/* mask = POLLOUT | POLLWRNORM; */
if (file->private_data) {
mask |= POLLIN | POLLRDNORM;
}
return mask;
}
if (minor >= ISDN_MINOR_CTRL && minor <= ISDN_MINOR_CTRLMAX) {
if (drvidx < 0) {
/* driver deregistered while file open */
return POLLHUP;
}
poll_wait(file, &(dev->drv[drvidx]->st_waitq), wait);
mask = POLLOUT | POLLWRNORM;
if (dev->drv[drvidx]->stavail) {
mask |= POLLIN | POLLRDNORM;
}
return mask;
}
#ifdef CONFIG_ISDN_PPP
if (minor <= ISDN_MINOR_PPPMAX)
return (isdn_ppp_poll(file, wait));
#endif
printk(KERN_ERR "isdn_common: isdn_poll 2 -> what the hell\n");
return POLLERR;
}
static int
isdn_ioctl(struct inode *inode, struct file *file, uint cmd, ulong arg)
{
uint minor = MINOR(inode->i_rdev);
isdn_ctrl c;
int drvidx;
int chidx;
int ret;
int i;
char *p;
char *s;
union iocpar {
char name[10];
char bname[22];
isdn_ioctl_struct iocts;
isdn_net_ioctl_phone phone;
isdn_net_ioctl_cfg cfg;
} iocpar;
#define name iocpar.name
#define bname iocpar.bname
#define iocts iocpar.iocts
#define phone iocpar.phone
#define cfg iocpar.cfg
if (minor == ISDN_MINOR_STATUS) {
switch (cmd) {
case IIOCGETDVR:
return (TTY_DV +
(NET_DV << 8) +
(INF_DV << 16));
case IIOCGETCPS:
if (arg) {
ulong *p = (ulong *) arg;
int i;
if ((ret = verify_area(VERIFY_WRITE, (void *) arg,
sizeof(ulong) * ISDN_MAX_CHANNELS * 2)))
return ret;
for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
put_user(dev->ibytes[i], p++);
put_user(dev->obytes[i], p++);
}
return 0;
} else
return -EINVAL;
break;
#ifdef CONFIG_NETDEVICES
case IIOCNETGPN:
/* Get peer phone number of a connected
* isdn network interface */
if (arg) {
if (copy_from_user((char *) &phone, (char *) arg, sizeof(phone)))
return -EFAULT;
return isdn_net_getpeer(&phone, (isdn_net_ioctl_phone *) arg);
} else
return -EINVAL;
#endif
default:
return -EINVAL;
}
}
if (!dev->drivers)
return -ENODEV;
if (minor < ISDN_MINOR_CTRL) {
drvidx = isdn_minor2drv(minor);
if (drvidx < 0)
return -ENODEV;
chidx = isdn_minor2chan(minor);
if (!(dev->drv[drvidx]->flags & DRV_FLAG_RUNNING))
return -ENODEV;
return 0;
}
if (minor <= ISDN_MINOR_CTRLMAX) {
/*
* isdn net devices manage lots of configuration variables as linked lists.
* Those lists must only be manipulated from user space. Some of the ioctl's
* service routines access user space and are not atomic. Therefor, ioctl's
* manipulating the lists and ioctl's sleeping while accessing the lists
* are serialized by means of a semaphore.
*/
switch (cmd) {
case IIOCNETDWRSET:
#ifdef CONFIG_ISDN_WITH_ABC
if (arg) {
if (copy_from_user(name, (char *) arg, sizeof(name))) {
return(-EFAULT);
} else {
isdn_net_dev *p = isdn_net_findif(name);
if(p == NULL)
return(-EINVAL);
return(isdn_dw_abc_reset_interface(p->local,1));
}
}
#else
printk(KERN_INFO "INFO: ISDN_DW_ABC_EXTENSION not enabled\n");
#endif
return(-EINVAL);
case IIOCNETLCR:
#ifdef CONFIG_ISDN_WITH_ABC_LCR_SUPPORT
isdn_dw_abc_lcr_ioctl(arg);
return(0);
#else
printk(KERN_INFO "INFO: ISDN_ABC_LCR_SUPPORT not enabled\n");
return -ENODEV;
#endif
#ifdef CONFIG_NETDEVICES
case IIOCNETAIF:
/* Add a network-interface */
if (arg) {
if (copy_from_user(name, (char *) arg, sizeof(name)))
return -EFAULT;
s = name;
} else {
s = NULL;
}
ret = down_interruptible(&dev->sem);
if( ret ) return ret;
if ((s = isdn_net_new(s, NULL))) {
if (copy_to_user((char *) arg, s, strlen(s) + 1)){
ret = -EFAULT;
} else {
ret = 0;
}
} else
ret = -ENODEV;
up(&dev->sem);
return ret;
case IIOCNETASL:
/* Add a slave to a network-interface */
if (arg) {
if (copy_from_user(bname, (char *) arg, sizeof(bname) - 1))
return -EFAULT;
} else
return -EINVAL;
ret = down_interruptible(&dev->sem);
if( ret ) return ret;
if ((s = isdn_net_newslave(bname))) {
if (copy_to_user((char *) arg, s, strlen(s) + 1)){
ret = -EFAULT;
} else {
ret = 0;
}
} else
ret = -ENODEV;
up(&dev->sem);
return ret;
case IIOCNETDIF:
/* Delete a network-interface */
if (arg) {
if (copy_from_user(name, (char *) arg, sizeof(name)))
return -EFAULT;
ret = down_interruptible(&dev->sem);
if( ret ) return ret;
ret = isdn_net_rm(name);
up(&dev->sem);
return ret;
} else
return -EINVAL;
case IIOCNETSCF:
/* Set configurable parameters of a network-interface */
if (arg) {
if (copy_from_user((char *) &cfg, (char *) arg, sizeof(cfg)))
return -EFAULT;
return isdn_net_setcfg(&cfg);
} else
return -EINVAL;
case IIOCNETGCF:
/* Get configurable parameters of a network-interface */
if (arg) {
if (copy_from_user((char *) &cfg, (char *) arg, sizeof(cfg)))
return -EFAULT;
if (!(ret = isdn_net_getcfg(&cfg))) {
if (copy_to_user((char *) arg, (char *) &cfg, sizeof(cfg)))
return -EFAULT;
}
return ret;
} else
return -EINVAL;
case IIOCNETANM:
/* Add a phone-number to a network-interface */
if (arg) {
if (copy_from_user((char *) &phone, (char *) arg, sizeof(phone)))
return -EFAULT;
ret = down_interruptible(&dev->sem);
if( ret ) return ret;
ret = isdn_net_addphone(&phone);
up(&dev->sem);
return ret;
} else
return -EINVAL;
case IIOCNETGNM:
/* Get list of phone-numbers of a network-interface */
if (arg) {
if (copy_from_user((char *) &phone, (char *) arg, sizeof(phone)))
return -EFAULT;
ret = down_interruptible(&dev->sem);
if( ret ) return ret;
ret = isdn_net_getphones(&phone, (char *) arg);
up(&dev->sem);
return ret;
} else
return -EINVAL;
case IIOCNETDNM:
/* Delete a phone-number of a network-interface */
if (arg) {
if (copy_from_user((char *) &phone, (char *) arg, sizeof(phone)))
return -EFAULT;
ret = down_interruptible(&dev->sem);
if( ret ) return ret;
ret = isdn_net_delphone(&phone);
up(&dev->sem);
return ret;
} else
return -EINVAL;
case IIOCNETDIL:
/* Force dialing of a network-interface */
if (arg) {
if (copy_from_user(name, (char *) arg, sizeof(name)))
return -EFAULT;
return isdn_net_force_dial(name);
} else
return -EINVAL;
#ifdef CONFIG_ISDN_PPP
case IIOCNETALN:
if (!arg)
return -EINVAL;
if (copy_from_user(name, (char *) arg, sizeof(name)))
return -EFAULT;
return isdn_ppp_dial_slave(name);
case IIOCNETDLN:
if (!arg)
return -EINVAL;
if (copy_from_user(name, (char *) arg, sizeof(name)))
return -EFAULT;
return isdn_ppp_hangup_slave(name);
#endif
case IIOCNETHUP:
/* Force hangup of a network-interface */
if (!arg)
return -EINVAL;
if (copy_from_user(name, (char *) arg, sizeof(name)))
return -EFAULT;
return isdn_net_force_hangup(name);
break;
#endif /* CONFIG_NETDEVICES */
case IIOCSETVER:
dev->net_verbose = arg;
printk(KERN_INFO "isdn: Verbose-Level is %d\n", dev->net_verbose);
return 0;
case IIOCSETGST:
if (arg)
dev->global_flags |= ISDN_GLOBAL_STOPPED;
else
dev->global_flags &= ~ISDN_GLOBAL_STOPPED;
printk(KERN_INFO "isdn: Global Mode %s\n",
(dev->global_flags & ISDN_GLOBAL_STOPPED) ? "stopped" : "running");
return 0;
case IIOCSETBRJ:
drvidx = -1;
if (arg) {
int i;
char *p;
if (copy_from_user((char *) &iocts, (char *) arg,
sizeof(isdn_ioctl_struct)))
return -EFAULT;
if (strlen(iocts.drvid)) {
if ((p = strchr(iocts.drvid, ',')))
*p = 0;
drvidx = -1;
for (i = 0; i < ISDN_MAX_DRIVERS; i++)
if (!(strcmp(dev->drvid[i], iocts.drvid))) {
drvidx = i;
break;
}
}
}
if (drvidx == -1)
return -ENODEV;
if (iocts.arg)
dev->drv[drvidx]->flags |= DRV_FLAG_REJBUS;
else
dev->drv[drvidx]->flags &= ~DRV_FLAG_REJBUS;
return 0;
case IIOCSIGPRF:
dev->profd = current;
return 0;
break;
case IIOCGETPRF:
/* Get all Modem-Profiles */
if (arg) {
char *p = (char *) arg;
int i;
if ((ret = verify_area(VERIFY_WRITE, (void *) arg,
(ISDN_MODEM_ANZREG + ISDN_MSNLEN + ISDN_LMSNLEN)
* ISDN_MAX_CHANNELS)))
return ret;
for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
if (copy_to_user(p, dev->mdm.info[i].emu.profile,
ISDN_MODEM_ANZREG))
return -EFAULT;
p += ISDN_MODEM_ANZREG;
if (copy_to_user(p, dev->mdm.info[i].emu.pmsn, ISDN_MSNLEN))
return -EFAULT;
p += ISDN_MSNLEN;
if (copy_to_user(p, dev->mdm.info[i].emu.plmsn, ISDN_LMSNLEN))
return -EFAULT;
p += ISDN_LMSNLEN;
}
return (ISDN_MODEM_ANZREG + ISDN_MSNLEN + ISDN_LMSNLEN) * ISDN_MAX_CHANNELS;
} else
return -EINVAL;
break;
case IIOCSETPRF:
/* Set all Modem-Profiles */
if (arg) {
char *p = (char *) arg;
int i;
if ((ret = verify_area(VERIFY_READ, (void *) arg,
(ISDN_MODEM_ANZREG + ISDN_MSNLEN)
* ISDN_MAX_CHANNELS)))
return ret;
for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
if (copy_from_user(dev->mdm.info[i].emu.profile, p,
ISDN_MODEM_ANZREG))
return -EFAULT;
p += ISDN_MODEM_ANZREG;
if (copy_from_user(dev->mdm.info[i].emu.pmsn, p, ISDN_MSNLEN))
return -EFAULT;
p += ISDN_MSNLEN;
}
return 0;
} else
return -EINVAL;
break;
case IIOCSETMAP:
case IIOCGETMAP:
/* Set/Get MSN->EAZ-Mapping for a driver */
if (arg) {
if (copy_from_user((char *) &iocts,
(char *) arg,
sizeof(isdn_ioctl_struct)))
return -EFAULT;
if (strlen(iocts.drvid)) {
drvidx = -1;
for (i = 0; i < ISDN_MAX_DRIVERS; i++)
if (!(strcmp(dev->drvid[i], iocts.drvid))) {
drvidx = i;
break;
}
} else
drvidx = 0;
if (drvidx == -1)
return -ENODEV;
if (cmd == IIOCSETMAP) {
int loop = 1;
p = (char *) iocts.arg;
i = 0;
while (loop) {
int j = 0;
while (1) {
if ((ret = verify_area(VERIFY_READ, p, 1)))
return ret;
get_user(bname[j], p++);
switch (bname[j]) {
case '\0':
loop = 0;
/* Fall through */
case ',':
bname[j] = '\0';
strcpy(dev->drv[drvidx]->msn2eaz[i], bname);
j = ISDN_MSNLEN;
break;
default:
j++;
}
if (j >= ISDN_MSNLEN)
break;
}
if (++i > 9)
break;
}
} else {
p = (char *) iocts.arg;
for (i = 0; i < 10; i++) {
sprintf(bname, "%s%s",
strlen(dev->drv[drvidx]->msn2eaz[i]) ?
dev->drv[drvidx]->msn2eaz[i] : "-",
(i < 9) ? "," : "\0");
if (copy_to_user(p, bname, strlen(bname) + 1))
return -EFAULT;
p += strlen(bname);
}
}
return 0;
} else
return -EINVAL;
case IIOCDBGVAR:
if (arg) {
if (copy_to_user((char *) arg, (char *) &dev, sizeof(ulong)))
return -EFAULT;
return 0;
} else
return -EINVAL;
break;
default:
if ((cmd & IIOCDRVCTL) == IIOCDRVCTL)
cmd = ((cmd >> _IOC_NRSHIFT) & _IOC_NRMASK) & ISDN_DRVIOCTL_MASK;
else
return -EINVAL;
if (arg) {
int i;
char *p;
if (copy_from_user((char *) &iocts, (char *) arg, sizeof(isdn_ioctl_struct)))
return -EFAULT;
if (strlen(iocts.drvid)) {
if ((p = strchr(iocts.drvid, ',')))
*p = 0;
drvidx = -1;
for (i = 0; i < ISDN_MAX_DRIVERS; i++)
if (!(strcmp(dev->drvid[i], iocts.drvid))) {
drvidx = i;
break;
}
} else
drvidx = 0;
if (drvidx == -1)
return -ENODEV;
if ((ret = verify_area(VERIFY_WRITE, (void *) arg,
sizeof(isdn_ioctl_struct))))
return ret;
c.driver = drvidx;
c.command = ISDN_CMD_IOCTL;
c.arg = cmd;
memcpy(c.parm.num, (char *) &iocts.arg, sizeof(ulong));
ret = isdn_command(&c);
memcpy((char *) &iocts.arg, c.parm.num, sizeof(ulong));
if (copy_to_user((char *) arg, &iocts, sizeof(isdn_ioctl_struct)))
return -EFAULT;
return ret;
} else
return -EINVAL;
}
}
#ifdef CONFIG_ISDN_PPP
if (minor <= ISDN_MINOR_PPPMAX)
return (isdn_ppp_ioctl(minor - ISDN_MINOR_PPP, file, cmd, arg));
#endif
return -ENODEV;
#undef name
#undef bname
#undef iocts
#undef phone
#undef cfg
}
/*
* Open the device code.
* MOD_INC_USE_COUNT make sure that the driver memory is not freed
* while the device is in use.
*/
static int
isdn_open(struct inode *ino, struct file *filep)
{
uint minor = MINOR(ino->i_rdev);
int drvidx;
int chidx;
if (minor == ISDN_MINOR_STATUS) {
infostruct *p;
if ((p = (infostruct *) kmalloc(sizeof(infostruct), GFP_KERNEL))) {
MOD_INC_USE_COUNT;
p->next = (char *) dev->infochain;
p->private = (char *) &(filep->private_data);
dev->infochain = p;
/* At opening we allow a single update */
filep->private_data = (char *) 1;
return 0;
} else
return -ENOMEM;
}
if (!dev->channels)
return -ENODEV;
if (minor < ISDN_MINOR_CTRL) {
drvidx = isdn_minor2drv(minor);
if (drvidx < 0)
return -ENODEV;
chidx = isdn_minor2chan(minor);
if (!(dev->drv[drvidx]->flags & DRV_FLAG_RUNNING))
return -ENODEV;
if (!(dev->drv[drvidx]->online & (1 << chidx)))
return -ENODEV;
isdn_MOD_INC_USE_COUNT();
return 0;
}
if (minor <= ISDN_MINOR_CTRLMAX) {
drvidx = isdn_minor2drv(minor - ISDN_MINOR_CTRL);
if (drvidx < 0)
return -ENODEV;
isdn_MOD_INC_USE_COUNT();
#ifdef CONFIG_ISDN_WITH_ABC_LCR_SUPPORT
if(!drvidx) isdn_dw_abc_lcr_open();
#endif
return 0;
}
#ifdef CONFIG_ISDN_PPP
if (minor <= ISDN_MINOR_PPPMAX) {
int ret;
if (!(ret = isdn_ppp_open(minor - ISDN_MINOR_PPP, filep)))
isdn_MOD_INC_USE_COUNT();
return ret;
}
#endif
return -ENODEV;
}
static int
isdn_close(struct inode *ino, struct file *filep)
{
uint minor = MINOR(ino->i_rdev);
if (minor == ISDN_MINOR_STATUS) {
infostruct *p = dev->infochain;
infostruct *q = NULL;
MOD_DEC_USE_COUNT;
while (p) {
if (p->private == (char *) &(filep->private_data)) {
if (q)
q->next = p->next;
else
dev->infochain = (infostruct *) (p->next);
kfree(p);
return 0;
}
q = p;
p = (infostruct *) (p->next);
}
printk(KERN_WARNING "isdn: No private data while closing isdnctrl\n");
return 0;
}
isdn_MOD_DEC_USE_COUNT();
if (minor < ISDN_MINOR_CTRL)
return 0;
if (minor <= ISDN_MINOR_CTRLMAX) {
if (dev->profd == current)
dev->profd = NULL;
#ifdef CONFIG_ISDN_WITH_ABC_LCR_SUPPORT
{
int drvidx = isdn_minor2drv(minor - ISDN_MINOR_CTRL);
if(!drvidx) isdn_dw_abc_lcr_close();
}
#endif
return 0;
}
#ifdef CONFIG_ISDN_PPP
if (minor <= ISDN_MINOR_PPPMAX)
isdn_ppp_release(minor - ISDN_MINOR_PPP, filep);
#endif
return 0;
}
static struct file_operations isdn_fops =
{
isdn_lseek,
isdn_read,
isdn_write,
NULL, /* isdn_readdir */
isdn_poll, /* isdn_poll */
isdn_ioctl, /* isdn_ioctl */
NULL, /* isdn_mmap */
isdn_open,
NULL, /* flush */
isdn_close,
NULL /* fsync */
};
char *
isdn_map_eaz2msn(char *msn, int di)
{
driver *this = dev->drv[di];
int i;
if (strlen(msn) == 1) {
i = msn[0] - '0';
if ((i >= 0) && (i <= 9))
if (strlen(this->msn2eaz[i]))
return (this->msn2eaz[i]);
}
return (msn);
}
/*
* Find an unused ISDN-channel, whose feature-flags match the
* given L2- and L3-protocols.
*/
#define L2V (~(ISDN_FEATURE_L2_V11096|ISDN_FEATURE_L2_V11019|ISDN_FEATURE_L2_V11038))
int
isdn_get_free_channel(int usage, int l2_proto, int l3_proto, int pre_dev
,int pre_chan)
{
int i;
ulong flags;
ulong features;
ulong vfeatures;
save_flags(flags);
cli();
features = ((1 << l2_proto) | (0x10000 << l3_proto));
vfeatures = (((1 << l2_proto) | (0x10000 << l3_proto)) &
~(ISDN_FEATURE_L2_V11096|ISDN_FEATURE_L2_V11019|ISDN_FEATURE_L2_V11038));
/* If Layer-2 protocol is V.110, accept drivers with
* transparent feature even if these don't support V.110
* because we can emulate this in linklevel.
*/
for (i = 0; i < ISDN_MAX_CHANNELS; i++)
if (USG_NONE(dev->usage[i]) &&
(dev->drvmap[i] != -1)) {
int d = dev->drvmap[i];
#ifdef CONFIG_ISDN_WITH_ABC_CH_EXTINUSE
if(jiffies < dev->dwabc_chan_external_inuse[i]) {
if((dev->dwabc_chan_external_inuse[i] - jiffies) > (HZ * 120))
dev->dwabc_chan_external_inuse[i] = 0;
else
continue;
}
#endif
if ((dev->usage[i] & ISDN_USAGE_EXCLUSIVE) &&
((pre_dev != d) || (pre_chan != dev->chanmap[i])))
continue;
if (dev->usage[i] & 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)) {
dev->usage[i] &= ISDN_USAGE_EXCLUSIVE;
dev->usage[i] |= usage;
isdn_info_update();
restore_flags(flags);
return i;
} else {
#ifdef CONFIG_ISDN_WITH_ABC
if ((pre_dev == d) && ((pre_chan == dev->chanmap[i]) || pre_chan > 1000)) {
#else
if ((pre_dev == d) && (pre_chan == dev->chanmap[i])) {
#endif
dev->usage[i] &= ISDN_USAGE_EXCLUSIVE;
dev->usage[i] |= usage;
isdn_info_update();
restore_flags(flags);
return i;
}
}
}
}
}
restore_flags(flags);
return -1;
}
/*
* Set state of ISDN-channel to 'unused'
*/
void
isdn_free_channel(int di, int ch, int usage)
{
int i;
ulong flags;
save_flags(flags);
cli();
for (i = 0; i < ISDN_MAX_CHANNELS; i++)
if (((!usage) || ((dev->usage[i] & ISDN_USAGE_MASK) == usage)) &&
(dev->drvmap[i] == di) &&
(dev->chanmap[i] == ch)) {
dev->usage[i] &= (ISDN_USAGE_NONE | ISDN_USAGE_EXCLUSIVE);
strcpy(dev->num[i], "???");
dev->ibytes[i] = 0;
dev->obytes[i] = 0;
// 20.10.99 JIM, try to reinitialize v110 !
dev->v110emu[i] = 0;
atomic_set(&(dev->v110use[i]), 0);
isdn_v110_close(dev->v110[i]);
dev->v110[i] = NULL;
// 20.10.99 JIM, try to reinitialize v110 !
isdn_info_update();
isdn_free_queue(&dev->drv[di]->rpqueue[ch]);
}
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 ((dev->drvmap[i] == di) &&
(dev->chanmap[i] == ch)) {
dev->usage[i] &= ~ISDN_USAGE_EXCLUSIVE;
isdn_info_update();
restore_flags(flags);
return;
}
restore_flags(flags);
}
/*
* writebuf replacement for SKB_ABLE drivers
*/
static int
isdn_writebuf_stub(int drvidx, int chan, const u_char * buf, int len,
int user)
{
int ret;
int hl = dev->drv[drvidx]->interface->hl_hdrlen;
struct sk_buff *skb = alloc_skb(hl + len, GFP_ATOMIC);
if (!skb)
return 0;
skb_reserve(skb, hl);
if (user)
copy_from_user(skb_put(skb, len), buf, len);
else
memcpy(skb_put(skb, len), buf, len);
ret = dev->drv[drvidx]->interface->writebuf_skb(drvidx, chan, 1, skb);
if (ret <= 0)
dev_kfree_skb(skb);
if (ret > 0)
dev->obytes[isdn_dc2minor(drvidx, chan)] += ret;
return ret;
}
/*
* Return: length of data on success, -ERRcode on failure.
*/
int
isdn_writebuf_skb_stub(int drvidx, int chan, int ack, struct sk_buff *skb)
{
int ret;
struct sk_buff *nskb = NULL;
int v110_ret = skb->len;
int idx = isdn_dc2minor(drvidx, chan);
if (dev->v110[idx]) {
atomic_inc(&dev->v110use[idx]);
nskb = isdn_v110_encode(dev->v110[idx], skb);
atomic_dec(&dev->v110use[idx]);
if (!nskb)
return 0;
v110_ret = *((int *)nskb->data);
skb_pull(nskb, sizeof(int));
if (!nskb->len) {
dev_kfree_skb(nskb);
dev_kfree_skb(skb);
return v110_ret;
}
/* V.110 must always be acknowledged */
ack = 1;
ret = dev->drv[drvidx]->interface->writebuf_skb(drvidx, chan, ack, nskb);
} else {
int hl = dev->drv[drvidx]->interface->hl_hdrlen;
if( skb_headroom(skb) < hl ){
/*
* This should only occur when new HL driver with
* increased hl_hdrlen was loaded after netdevice
* was created and connected to the new driver.
*
* The V.110 branch (re-allocates on its own) does
* not need this
*/
struct sk_buff * skb_tmp;
skb_tmp = skb_realloc_headroom(skb, hl);
printk(KERN_DEBUG "isdn_writebuf_skb_stub: reallocating headroom%s\n", skb_tmp ? "" : " failed");
if (!skb_tmp) return -ENOMEM; /* 0 better? */
ret = dev->drv[drvidx]->interface->writebuf_skb(drvidx, chan, ack, skb_tmp);
if( ret > 0 ){
dev_kfree_skb(skb);
} else {
dev_kfree_skb(skb_tmp);
}
} else {
ret = dev->drv[drvidx]->interface->writebuf_skb(drvidx, chan, ack, skb);
}
}
if (ret > 0) {
dev->obytes[idx] += ret;
if (dev->v110[idx]) {
atomic_inc(&dev->v110use[idx]);
dev->v110[idx]->skbuser++;
atomic_dec(&dev->v110use[idx]);
dev_kfree_skb(skb);
/* For V.110 return unencoded data length */
ret = v110_ret;
if (ret == skb->len)
dev_kfree_skb(skb);
}
} else
if (dev->v110[idx])
dev_kfree_skb(nskb);
return ret;
}
int
register_isdn_module(isdn_module *m) {
#if 0
isdn_module_list **pp = &dev->modules;
isdn_module *new = kmalloc(sizeof(isdn_module_list), GFP_KERNEL);
if (!new) {
printk(KERN_WARNING "isdn: Out of memory in register_isdn_module\n");
return -1;
}
while (*pp && (*pp)->orig != m)
pp = &(*pp)->next;
if (*pp != NULL) {
printk(KERN_WARNING "isdn: Module %s already registered\n", m->name);
return -1;
}
while (*pp && ((*pp)->module.priority < m->priority))
pp = &(*pp)->next;
new->next = *pp;
new->orig = m;
new->module = *m;
*pp = new;
#endif
return 0;
}
int
unregister_isdn_module(isdn_module *m) {
#if 0
isdn_module_list **pp = &dev->modules;
while (*pp && *pp != m)
pp = &(*pp)->next;
if (*pp == NULL) {
printk(KERN_WARNING "isdn: Module %s not found\n", m->name);
return -1;
}
#endif
return 0;
}
int
isdn_add_channels(driver *d, int drvidx, int n, int adding)
{
int j, k, m;
ulong flags;
#ifdef COMPAT_HAS_NEW_WAITQ
init_waitqueue_head(&d->st_waitq);
#endif
if (d->flags & DRV_FLAG_RUNNING)
return -1;
if (n < 1) return 0;
m = (adding) ? d->channels + n : n;
if (dev->channels + n > ISDN_MAX_CHANNELS) {
printk(KERN_WARNING "register_isdn: Max. %d channels supported\n",
ISDN_MAX_CHANNELS);
return -1;
}
if ((adding) && (d->rcverr))
kfree(d->rcverr);
if (!(d->rcverr = (int *) kmalloc(sizeof(int) * m, GFP_KERNEL))) {
printk(KERN_WARNING "register_isdn: Could not alloc rcverr\n");
return -1;
}
memset((char *) d->rcverr, 0, sizeof(int) * m);
if ((adding) && (d->rcvcount))
kfree(d->rcvcount);
if (!(d->rcvcount = (int *) kmalloc(sizeof(int) * m, GFP_KERNEL))) {
printk(KERN_WARNING "register_isdn: Could not alloc rcvcount\n");
if (!adding) kfree(d->rcverr);
return -1;
}
memset((char *) d->rcvcount, 0, sizeof(int) * m);
if ((adding) && (d->rpqueue)) {
for (j = 0; j < d->channels; j++)
isdn_free_queue(&d->rpqueue[j]);
kfree(d->rpqueue);
}
if (!(d->rpqueue =
(struct sk_buff_head *) kmalloc(sizeof(struct sk_buff_head) * m, GFP_KERNEL))) {
printk(KERN_WARNING "register_isdn: Could not alloc rpqueue\n");
if (!adding) {
kfree(d->rcvcount);
kfree(d->rcverr);
}
return -1;
}
for (j = 0; j < m; j++) {
skb_queue_head_init(&d->rpqueue[j]);
}
if ((adding) && (d->rcv_waitq))
kfree(d->rcv_waitq);
#ifdef COMPAT_HAS_NEW_WAITQ
d->rcv_waitq = (wait_queue_head_t *)
kmalloc(sizeof(wait_queue_head_t) * 2 * m, GFP_KERNEL);
if (!d->rcv_waitq) {
#else
if (!(d->rcv_waitq = (struct wait_queue **)
kmalloc(sizeof(struct wait_queue *) * m, GFP_KERNEL))) {
#endif
printk(KERN_WARNING "register_isdn: Could not alloc rcv_waitq\n");
if (!adding) {
kfree(d->rpqueue);
kfree(d->rcvcount);
kfree(d->rcverr);
}
return -1;
}
#ifdef COMPAT_HAS_NEW_WAITQ
d->snd_waitq = d->rcv_waitq + m;
for (j = 0; j < m; j++) {
init_waitqueue_head(&d->rcv_waitq[j]);
init_waitqueue_head(&d->snd_waitq[j]);
}
#else
memset((char *) d->rcv_waitq, 0, sizeof(struct wait_queue *) * m);
if ((adding) && (d->snd_waitq))
kfree(d->snd_waitq);
if (!(d->snd_waitq = (struct wait_queue **)
kmalloc(sizeof(struct wait_queue *) * m, GFP_KERNEL))) {
printk(KERN_WARNING "register_isdn: Could not alloc snd_waitq\n");
if (!adding) {
kfree(d->rcv_waitq);
kfree(d->rpqueue);
kfree(d->rcvcount);
kfree(d->rcverr);
}
return -1;
}
memset((char *) d->snd_waitq, 0, sizeof(struct wait_queue *) * m);
#endif
dev->channels += n;
save_flags(flags);
cli();
for (j = d->channels; j < m; j++)
for (k = 0; k < ISDN_MAX_CHANNELS; k++)
if (dev->chanmap[k] < 0) {
dev->chanmap[k] = j;
dev->drvmap[k] = drvidx;
break;
}
restore_flags(flags);
d->channels = m;
return 0;
}
/*
* Low-level-driver registration
*/
#ifdef CONFIG_ISDN_DIVERSION
extern isdn_divert_if *divert_if;
static char *map_drvname(int di)
{
if ((di < 0) || (di >= ISDN_MAX_DRIVERS))
return(NULL);
return(dev->drvid[di]); /* driver name */
} /* map_drvname */
static int map_namedrv(char *id)
{ int i;
for (i = 0; i < ISDN_MAX_DRIVERS; i++)
{ if (!strcmp(dev->drvid[i],id))
return(i);
}
return(-1);
} /* map_namedrv */
int DIVERT_REG_NAME(isdn_divert_if *i_div)
{
if (i_div->if_magic != DIVERT_IF_MAGIC)
return(DIVERT_VER_ERR);
switch (i_div->cmd)
{
case DIVERT_CMD_REL:
if (divert_if != i_div)
return(DIVERT_REL_ERR);
divert_if = NULL; /* free interface */
MOD_DEC_USE_COUNT;
return(DIVERT_NO_ERR);
case DIVERT_CMD_REG:
if (divert_if)
return(DIVERT_REG_ERR);
i_div->ll_cmd = isdn_command; /* set command function */
i_div->drv_to_name = map_drvname;
i_div->name_to_drv = map_namedrv;
MOD_INC_USE_COUNT;
divert_if = i_div; /* remember interface */
return(DIVERT_NO_ERR);
default:
return(DIVERT_CMD_ERR);
}
} /* DIVERT_REG_NAME */
EXPORT_SYMBOL(DIVERT_REG_NAME);
#endif CONFIG_ISDN_DIVERSION
EXPORT_SYMBOL(register_isdn);
EXPORT_SYMBOL(register_isdn_module);
EXPORT_SYMBOL(unregister_isdn_module);
#ifdef CONFIG_ISDN_PPP
EXPORT_SYMBOL(isdn_ppp_register_compressor);
EXPORT_SYMBOL(isdn_ppp_unregister_compressor);
#endif
int
register_isdn(isdn_if * i)
{
driver *d;
int j;
ulong flags;
int drvidx;
if (dev->drivers >= ISDN_MAX_DRIVERS) {
printk(KERN_WARNING "register_isdn: Max. %d drivers supported\n",
ISDN_MAX_DRIVERS);
return 0;
}
if (!i->writebuf_skb) {
printk(KERN_WARNING "register_isdn: No write routine given.\n");
return 0;
}
if (!(d = (driver *) kmalloc(sizeof(driver), GFP_KERNEL))) {
printk(KERN_WARNING "register_isdn: Could not alloc driver-struct\n");
return 0;
}
memset((char *) d, 0, sizeof(driver));
d->maxbufsize = i->maxbufsize;
d->pktcount = 0;
d->stavail = 0;
d->flags = DRV_FLAG_LOADED;
d->online = 0;
d->interface = i;
d->channels = 0;
for (drvidx = 0; drvidx < ISDN_MAX_DRIVERS; drvidx++)
if (!dev->drv[drvidx])
break;
if (isdn_add_channels(d, drvidx, i->channels, 0)) {
kfree(d);
return 0;
}
i->channels = drvidx;
i->rcvcallb_skb = isdn_receive_skb_callback;
i->statcallb = isdn_status_callback;
if (!strlen(i->id))
sprintf(i->id, "line%d", drvidx);
save_flags(flags);
cli();
for (j = 0; j < drvidx; j++)
if (!strcmp(i->id, dev->drvid[j]))
sprintf(i->id, "line%d", drvidx);
dev->drv[drvidx] = d;
strcpy(dev->drvid[drvidx], i->id);
isdn_info_update();
dev->drivers++;
restore_flags(flags);
return 1;
}
/*
*****************************************************************************
* And now the modules code.
*****************************************************************************
*/
extern int printk(const char *fmt,...);
#ifdef MODULE
#define isdn_init init_module
#endif
static char *
isdn_getrev(const char *revision)
{
char *rev;
char *p;
if ((p = strchr(revision, ':'))) {
rev = p + 2;
p = strchr(rev, '$');
*--p = 0;
} else
rev = "???";
return rev;
}
/*
* Allocate and initialize all data, register modem-devices
*/
int
isdn_init(void)
{
int i;
char tmprev[50];
if (!(dev = (isdn_dev *) vmalloc(sizeof(isdn_dev)))) {
printk(KERN_WARNING "isdn: Could not allocate device-struct.\n");
return -EIO;
}
memset((char *) dev, 0, sizeof(isdn_dev));
init_timer(&dev->timer);
dev->timer.function = isdn_timer_funct;
#ifdef COMPAT_HAS_NEW_WAITQ
init_MUTEX(&dev->sem);
init_waitqueue_head(&dev->info_waitq);
#else
dev->sem = MUTEX;
#endif
for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
dev->drvmap[i] = -1;
dev->chanmap[i] = -1;
dev->m_idx[i] = -1;
strcpy(dev->num[i], "???");
#ifdef COMPAT_HAS_NEW_WAITQ
init_waitqueue_head(&dev->mdm.info[i].open_wait);
init_waitqueue_head(&dev->mdm.info[i].close_wait);
#endif
}
if (register_chrdev(ISDN_MAJOR, "isdn", &isdn_fops)) {
printk(KERN_WARNING "isdn: Could not register control devices\n");
vfree(dev);
return -EIO;
}
if ((i = isdn_tty_modem_init()) < 0) {
printk(KERN_WARNING "isdn: Could not register tty devices\n");
if (i == -3)
tty_unregister_driver(&dev->mdm.cua_modem);
if (i <= -2)
tty_unregister_driver(&dev->mdm.tty_modem);
vfree(dev);
unregister_chrdev(ISDN_MAJOR, "isdn");
return -EIO;
}
#ifdef CONFIG_ISDN_PPP
if (isdn_ppp_init() < 0) {
printk(KERN_WARNING "isdn: Could not create PPP-device-structs\n");
tty_unregister_driver(&dev->mdm.tty_modem);
tty_unregister_driver(&dev->mdm.cua_modem);
for (i = 0; i < ISDN_MAX_CHANNELS; i++)
kfree(dev->mdm.info[i].xmit_buf - 4);
unregister_chrdev(ISDN_MAJOR, "isdn");
vfree(dev);
return -EIO;
}
#endif /* CONFIG_ISDN_PPP */
strcpy(tmprev, isdn_revision);
printk(KERN_NOTICE "ISDN subsystem Rev: %s/", isdn_getrev(tmprev));
strcpy(tmprev, isdn_tty_revision);
printk("%s/", isdn_getrev(tmprev));
strcpy(tmprev, isdn_net_revision);
printk("%s/", isdn_getrev(tmprev));
strcpy(tmprev, isdn_ppp_revision);
printk("%s/", isdn_getrev(tmprev));
strcpy(tmprev, isdn_audio_revision);
printk("%s/", isdn_getrev(tmprev));
strcpy(tmprev, isdn_v110_revision);
printk("%s", isdn_getrev(tmprev));
#ifdef MODULE
printk(" loaded\n");
#else
printk("\n");
isdn_cards_init();
#endif
isdn_info_update();
#ifdef CONFIG_ISDN_WITH_ABC
isdn_dw_abc_init_func();
#endif
return 0;
}
#ifdef MODULE
/*
* Unload module
*/
void
cleanup_module(void)
{
int flags;
int i;
#ifdef CONFIG_ISDN_PPP
isdn_ppp_cleanup();
#endif
save_flags(flags);
cli();
if (isdn_net_rmall() < 0) {
printk(KERN_WARNING "isdn: net-device busy, remove cancelled\n");
restore_flags(flags);
return;
}
if (tty_unregister_driver(&dev->mdm.tty_modem)) {
printk(KERN_WARNING "isdn: ttyI-device busy, remove cancelled\n");
restore_flags(flags);
return;
}
if (tty_unregister_driver(&dev->mdm.cua_modem)) {
printk(KERN_WARNING "isdn: cui-device busy, remove cancelled\n");
restore_flags(flags);
return;
}
for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
isdn_tty_cleanup_xmit(&dev->mdm.info[i]);
kfree(dev->mdm.info[i].xmit_buf - 4);
#ifdef CONFIG_ISDN_TTY_FAX
kfree(dev->mdm.info[i].fax);
#endif
}
if (unregister_chrdev(ISDN_MAJOR, "isdn") != 0) {
printk(KERN_WARNING "isdn: controldevice busy, remove cancelled\n");
} else {
del_timer(&dev->timer);
vfree(dev);
printk(KERN_NOTICE "ISDN-subsystem unloaded\n");
}
restore_flags(flags);
#ifdef CONFIG_ISDN_WITH_ABC
isdn_dw_abc_release_func();
#endif
}
#endif
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