/* $Id$ * 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 * * 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 #include #include #include #include #include #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 #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