isdn_common.c
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上传日期:2013-04-10
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- /* $Id: isdn_common.c,v 1.1.4.1 2001/11/20 14:19:34 kai Exp $
- *
- * 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 software may be used and distributed according to the terms
- * of the GNU General Public License, incorporated herein by reference.
- *
- */
- #include <linux/config.h>
- #include <linux/module.h>
- #include <linux/init.h>
- #include <linux/version.h>
- #include <linux/poll.h>
- #include <linux/vmalloc.h>
- #include <linux/isdn.h>
- #include <linux/smp_lock.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_MODULE
- #define CONFIG_ISDN_DIVERSION
- #endif
- #ifdef CONFIG_ISDN_DIVERSION
- #include <linux/isdn_divertif.h>
- #endif /* CONFIG_ISDN_DIVERSION */
- #include "isdn_v110.h"
- #include <linux/devfs_fs_kernel.h>
- /* Debugflags */
- #undef ISDN_DEBUG_STATCALLB
- MODULE_DESCRIPTION("ISDN4Linux: link layer");
- MODULE_AUTHOR("Fritz Elfert");
- MODULE_LICENSE("GPL");
- isdn_dev *dev;
- static char *isdn_revision = "$Revision: 1.1.4.1 $";
- 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
- static isdn_divert_if *divert_if; /* = NULL */
- #endif /* CONFIG_ISDN_DIVERSION */
- static int isdn_writebuf_stub(int, int, const u_char *, int, int);
- static void set_global_features(void);
- static void isdn_register_devfs(int);
- static void isdn_unregister_devfs(int);
- static int isdn_wildmat(char *s, char *p);
- void
- isdn_lock_drivers(void)
- {
- int i;
- isdn_ctrl cmd;
- for (i = 0; i < ISDN_MAX_DRIVERS; i++) {
- if (!dev->drv[i])
- continue;
- cmd.driver = i;
- cmd.arg = 0;
- cmd.command = ISDN_CMD_LOCK;
- isdn_command(&cmd);
- dev->drv[i]->locks++;
- }
- }
- void
- isdn_MOD_INC_USE_COUNT(void)
- {
- MOD_INC_USE_COUNT;
- isdn_lock_drivers();
- }
- void
- isdn_unlock_drivers(void)
- {
- int i;
- for (i = 0; i < ISDN_MAX_DRIVERS; i++) {
- if (!dev->drv[i])
- continue;
- 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--;
- }
- }
- }
- void
- isdn_MOD_DEC_USE_COUNT(void)
- {
- MOD_DEC_USE_COUNT;
- isdn_unlock_drivers();
- }
- #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 == '')
- 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
- */
- static 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 == '')?2:1;
- continue;
- case '?':
- /* Match anything. */
- if (*s == '')
- 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:nostar;
- }
- int isdn_msncmp( const char * msn1, const char * msn2 )
- {
- char TmpMsn1[ ISDN_MSNLEN ];
- char TmpMsn2[ ISDN_MSNLEN ];
- char *p;
- for ( p = TmpMsn1; *msn1 && *msn1 != ':'; ) // Strip off a SPID
- *p++ = *msn1++;
- *p = '';
- for ( p = TmpMsn2; *msn2 && *msn2 != ':'; ) // Strip off a SPID
- *p++ = *msn2++;
- *p = '';
- return isdn_wildmat( TmpMsn1, TmpMsn2 );
- }
- 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 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 (tf & ISDN_TIMER_CARRIER)
- isdn_tty_carrier_timeout();
- }
- }
- if (tf)
- {
- unsigned long flags;
- save_flags(flags);
- cli();
- mod_timer(&dev->timer, jiffies+ISDN_TIMER_RES);
- restore_flags(flags);
- }
- }
- void
- isdn_timer_ctrl(int tf, int onoff)
- {
- unsigned long flags;
- int old_tflags;
- 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;
- }
- old_tflags = dev->tflags;
- if (onoff)
- dev->tflags |= tf;
- else
- dev->tflags &= ~tf;
- if (dev->tflags && !old_tflags)
- mod_timer(&dev->timer, jiffies+ISDN_TIMER_RES);
- 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->driver == -1) {
- printk(KERN_WARNING "isdn_command command(%x) driver -1n", cmd->command);
- return(1);
- }
- 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] = '';
- 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;
- isdn_net_dev *p;
- 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]);
- set_global_features();
- 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 %sn", 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;
- for ( p = dev->netdev; p; p = p->next )
- if ( p->local->isdn_channel == cmd.arg )
- {
- strcpy( cmd.parm.setup.eazmsn, p->local->msn );
- isdn_command(&cmd);
- retval = 1;
- break;
- }
- 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 Calln");
- 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=%dn", retval);
- #endif
- return retval;
- break;
- case ISDN_STAT_CINF:
- if (i < 0)
- return -1;
- #ifdef ISDN_DEBUG_STATCALLB
- printk(KERN_DEBUG "CINF: %ld %sn", 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 %sn", c->arg, c->parm.num);
- #endif
- printk(KERN_INFO "isdn: %s,ch%ld cause: %sn",
- 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 %sn", 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: %ldn", 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: %ldn", 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: %ldn", 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: %ldn", 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: %ldn", 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;
- isdn_unregister_devfs(i);
- }
- 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++)
- skb_queue_purge(&dev->drv[di]->rpqueue[i]);
- kfree(dev->drv[di]->rpqueue);
- kfree(dev->drv[di]->rcv_waitq);
- kfree(dev->drv[di]);
- dev->drv[di] = NULL;
- dev->drvid[di][0] = '';
- isdn_info_update();
- set_global_features();
- 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
- isdn_readbchan(int di, int channel, u_char * buf, u_char * fp, int len, wait_queue_head_t *sleep)
- {
- 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;
- }
- if (len > dev->drv[di]->rcvcount[channel])
- len = dev->drv[di]->rcvcount[channel];
- cp = buf;
- count = 0;
- while (len) {
- 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) && (len > 0)) {
- len--;
- 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) > len) {
- count_pull = len;
- dflag = 0;
- }
- count_put = count_pull;
- memcpy(cp, skb->data, count_put);
- cp += count_put;
- len -= 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;
- int retval;
- char *p;
- if (off != &file->f_pos)
- return -ESPIPE;
- lock_kernel();
- if (minor == ISDN_MINOR_STATUS) {
- if (!file->private_data) {
- if (file->f_flags & O_NONBLOCK) {
- retval = -EAGAIN;
- goto out;
- }
- 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)) {
- retval = -EFAULT;
- goto out;
- }
- *off += len;
- retval = len;
- goto out;
- }
- retval = 0;
- goto out;
- }
- if (!dev->drivers) {
- retval = -ENODEV;
- goto out;
- }
- if (minor <= ISDN_MINOR_BMAX) {
- printk(KERN_WARNING "isdn_read minor %d obsolete!n", minor);
- drvidx = isdn_minor2drv(minor);
- if (drvidx < 0) {
- retval = -ENODEV;
- goto out;
- }
- if (!(dev->drv[drvidx]->flags & DRV_FLAG_RUNNING)) {
- retval = -ENODEV;
- goto out;
- }
- chidx = isdn_minor2chan(minor);
- if (!(p = kmalloc(count, GFP_KERNEL))) {
- retval = -ENOMEM;
- goto out;
- }
- 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);
- retval = len;
- goto out;
- }
- if (minor <= ISDN_MINOR_CTRLMAX) {
- drvidx = isdn_minor2drv(minor - ISDN_MINOR_CTRL);
- if (drvidx < 0) {
- retval = -ENODEV;
- goto out;
- }
- if (!dev->drv[drvidx]->stavail) {
- if (file->f_flags & O_NONBLOCK) {
- retval = -EAGAIN;
- goto out;
- }
- interruptible_sleep_on(&(dev->drv[drvidx]->st_waitq));
- }
- if (dev->drv[drvidx]->interface->readstat) {
- if (count > dev->drv[drvidx]->stavail)
- count = dev->drv[drvidx]->stavail;
- len = dev->drv[drvidx]->interface->
- readstat(buf, count, 1, drvidx,
- isdn_minor2chan(minor));
- } else {
- len = 0;
- }
- save_flags(flags);
- cli();
- if (len)
- dev->drv[drvidx]->stavail -= len;
- else
- dev->drv[drvidx]->stavail = 0;
- restore_flags(flags);
- *off += len;
- retval = len;
- goto out;
- }
- #ifdef CONFIG_ISDN_PPP
- if (minor <= ISDN_MINOR_PPPMAX) {
- retval = isdn_ppp_read(minor - ISDN_MINOR_PPP, file, buf, count);
- goto out;
- }
- #endif
- retval = -ENODEV;
- out:
- unlock_kernel();
- return retval;
- }
- 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;
- int retval;
- if (off != &file->f_pos)
- return -ESPIPE;
- if (minor == ISDN_MINOR_STATUS)
- return -EPERM;
- if (!dev->drivers)
- return -ENODEV;
- lock_kernel();
- if (minor <= ISDN_MINOR_BMAX) {
- printk(KERN_WARNING "isdn_write minor %d obsolete!n", minor);
- drvidx = isdn_minor2drv(minor);
- if (drvidx < 0) {
- retval = -ENODEV;
- goto out;
- }
- if (!(dev->drv[drvidx]->flags & DRV_FLAG_RUNNING)) {
- retval = -ENODEV;
- goto out;
- }
- chidx = isdn_minor2chan(minor);
- while (isdn_writebuf_stub(drvidx, chidx, buf, count, 1) != count)
- interruptible_sleep_on(&dev->drv[drvidx]->snd_waitq[chidx]);
- retval = count;
- goto out;
- }
- if (minor <= ISDN_MINOR_CTRLMAX) {
- drvidx = isdn_minor2drv(minor - ISDN_MINOR_CTRL);
- if (drvidx < 0) {
- retval = -ENODEV;
- goto out;
- }
- /*
- * 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)
- retval = dev->drv[drvidx]->interface->
- writecmd(buf, count, 1, drvidx, isdn_minor2chan(minor));
- else
- retval = count;
- goto out;
- }
- #ifdef CONFIG_ISDN_PPP
- if (minor <= ISDN_MINOR_PPPMAX) {
- retval = isdn_ppp_write(minor - ISDN_MINOR_PPP, file, buf, count);
- goto out;
- }
- #endif
- retval = -ENODEV;
- out:
- unlock_kernel();
- return retval;
- }
- 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);
- lock_kernel();
- if (minor == ISDN_MINOR_STATUS) {
- poll_wait(file, &(dev->info_waitq), wait);
- /* mask = POLLOUT | POLLWRNORM; */
- if (file->private_data) {
- mask |= POLLIN | POLLRDNORM;
- }
- goto out;
- }
- if (minor >= ISDN_MINOR_CTRL && minor <= ISDN_MINOR_CTRLMAX) {
- if (drvidx < 0) {
- /* driver deregistered while file open */
- mask = POLLHUP;
- goto out;
- }
- poll_wait(file, &(dev->drv[drvidx]->st_waitq), wait);
- mask = POLLOUT | POLLWRNORM;
- if (dev->drv[drvidx]->stavail) {
- mask |= POLLIN | POLLRDNORM;
- }
- goto out;
- }
- #ifdef CONFIG_ISDN_PPP
- if (minor <= ISDN_MINOR_PPPMAX) {
- mask = isdn_ppp_poll(file, wait);
- goto out;
- }
- #endif
- mask = POLLERR;
- out:
- unlock_kernel();
- return mask;
- }
- 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_BMAX) {
- 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:
- printk(KERN_INFO "INFO: ISDN_DW_ABC_EXTENSION not enabledn");
- return(-EINVAL);
- case IIOCNETLCR:
- printk(KERN_INFO "INFO: ISDN_ABC_LCR_SUPPORT not enabledn");
- return -ENODEV;
- #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 %dn", 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 %sn",
- (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_NUMREG + 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_NUMREG))
- return -EFAULT;
- p += ISDN_MODEM_NUMREG;
- 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_NUMREG + 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_NUMREG + ISDN_MSNLEN + ISDN_LMSNLEN)
- * 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_NUMREG))
- return -EFAULT;
- p += ISDN_MODEM_NUMREG;
- if (copy_from_user(dev->mdm.info[i].emu.plmsn, p, ISDN_LMSNLEN))
- return -EFAULT;
- p += ISDN_LMSNLEN;
- 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 '':
- loop = 0;
- /* Fall through */
- case ',':
- bname[j] = '';
- 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) ? "," : "");
- 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.
- */
- static int
- isdn_open(struct inode *ino, struct file *filep)
- {
- uint minor = MINOR(ino->i_rdev);
- int drvidx;
- int chidx;
- int retval = -ENODEV;
- if (minor == ISDN_MINOR_STATUS) {
- infostruct *p;
- if ((p = kmalloc(sizeof(infostruct), GFP_KERNEL))) {
- 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;
- retval = 0;
- goto out;
- } else {
- retval = -ENOMEM;
- goto out;
- }
- }
- if (!dev->channels)
- goto out;
- if (minor <= ISDN_MINOR_BMAX) {
- printk(KERN_WARNING "isdn_open minor %d obsolete!n", minor);
- drvidx = isdn_minor2drv(minor);
- if (drvidx < 0)
- goto out;
- chidx = isdn_minor2chan(minor);
- if (!(dev->drv[drvidx]->flags & DRV_FLAG_RUNNING))
- goto out;
- if (!(dev->drv[drvidx]->online & (1 << chidx)))
- goto out;
- isdn_lock_drivers();
- retval = 0;
- goto out;
- }
- if (minor <= ISDN_MINOR_CTRLMAX) {
- drvidx = isdn_minor2drv(minor - ISDN_MINOR_CTRL);
- if (drvidx < 0)
- goto out;
- isdn_lock_drivers();
- retval = 0;
- goto out;
- }
- #ifdef CONFIG_ISDN_PPP
- if (minor <= ISDN_MINOR_PPPMAX) {
- retval = isdn_ppp_open(minor - ISDN_MINOR_PPP, filep);
- if (retval == 0)
- isdn_lock_drivers();
- goto out;
- }
- #endif
- out:
- return retval;
- }
- static int
- isdn_close(struct inode *ino, struct file *filep)
- {
- uint minor = MINOR(ino->i_rdev);
- lock_kernel();
- if (minor == ISDN_MINOR_STATUS) {
- infostruct *p = dev->infochain;
- infostruct *q = NULL;
- while (p) {
- if (p->private == (char *) &(filep->private_data)) {
- if (q)
- q->next = p->next;
- else
- dev->infochain = (infostruct *) (p->next);
- kfree(p);
- goto out;
- }
- q = p;
- p = (infostruct *) (p->next);
- }
- printk(KERN_WARNING "isdn: No private data while closing isdnctrln");
- goto out;
- }
- isdn_unlock_drivers();
- if (minor <= ISDN_MINOR_BMAX)
- goto out;
- if (minor <= ISDN_MINOR_CTRLMAX) {
- if (dev->profd == current)
- dev->profd = NULL;
- goto out;
- }
- #ifdef CONFIG_ISDN_PPP
- if (minor <= ISDN_MINOR_PPPMAX)
- isdn_ppp_release(minor - ISDN_MINOR_PPP, filep);
- #endif
- out:
- unlock_kernel();
- return 0;
- }
- static struct file_operations isdn_fops =
- {
- owner: THIS_MODULE,
- llseek: no_llseek,
- read: isdn_read,
- write: isdn_write,
- poll: isdn_poll,
- ioctl: isdn_ioctl,
- open: isdn_open,
- release: isdn_close,
- };
- 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, char *msn)
- {
- 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];
- if ((dev->usage[i] & ISDN_USAGE_EXCLUSIVE) &&
- ((pre_dev != d) || (pre_chan != dev->chanmap[i])))
- continue;
- if (!strcmp(isdn_map_eaz2msn(msn, d), "-"))
- 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 {
- if ((pre_dev == d) && (pre_chan == dev->chanmap[i])) {
- 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();
- skb_queue_purge(&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);
- 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%sn", 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]);
- /* For V.110 return unencoded data length */
- ret = v110_ret;
- /* if the complete frame was send we free the skb;
- if not upper function will requeue the skb */
- if (ret == skb->len)
- dev_kfree_skb(skb);
- }
- } else
- if (dev->v110[idx])
- dev_kfree_skb(nskb);
- return ret;
- }
- int
- isdn_add_channels(driver *d, int drvidx, int n, int adding)
- {
- int j, k, m;
- ulong flags;
- init_waitqueue_head(&d->st_waitq);
- 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 supportedn",
- ISDN_MAX_CHANNELS);
- return -1;
- }
- if ((adding) && (d->rcverr))
- kfree(d->rcverr);
- if (!(d->rcverr = kmalloc(sizeof(int) * m, GFP_KERNEL))) {
- printk(KERN_WARNING "register_isdn: Could not alloc rcverrn");
- return -1;
- }
- memset((char *) d->rcverr, 0, sizeof(int) * m);
- if ((adding) && (d->rcvcount))
- kfree(d->rcvcount);
- if (!(d->rcvcount = kmalloc(sizeof(int) * m, GFP_KERNEL))) {
- printk(KERN_WARNING "register_isdn: Could not alloc rcvcountn");
- 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++)
- skb_queue_purge(&d->rpqueue[j]);
- kfree(d->rpqueue);
- }
- if (!(d->rpqueue = kmalloc(sizeof(struct sk_buff_head) * m, GFP_KERNEL))) {
- printk(KERN_WARNING "register_isdn: Could not alloc rpqueuen");
- 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);
- d->rcv_waitq = kmalloc(sizeof(wait_queue_head_t) * 2 * m, GFP_KERNEL);
- if (!d->rcv_waitq) {
- printk(KERN_WARNING "register_isdn: Could not alloc rcv_waitqn");
- if (!adding) {
- kfree(d->rpqueue);
- kfree(d->rcvcount);
- kfree(d->rcverr);
- }
- return -1;
- }
- 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]);
- }
- 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;
- isdn_register_devfs(k);
- break;
- }
- restore_flags(flags);
- d->channels = m;
- return 0;
- }
- /*
- * Low-level-driver registration
- */
- static void
- set_global_features(void)
- {
- int drvidx;
- dev->global_features = 0;
- for (drvidx = 0; drvidx < ISDN_MAX_DRIVERS; drvidx++) {
- if (!dev->drv[drvidx])
- continue;
- if (dev->drv[drvidx]->interface)
- dev->global_features |= dev->drv[drvidx]->interface->features;
- }
- }
- #ifdef CONFIG_ISDN_DIVERSION
- 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);
- #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 supportedn",
- ISDN_MAX_DRIVERS);
- return 0;
- }
- if (!i->writebuf_skb) {
- printk(KERN_WARNING "register_isdn: No write routine given.n");
- return 0;
- }
- if (!(d = kmalloc(sizeof(driver), GFP_KERNEL))) {
- printk(KERN_WARNING "register_isdn: Could not alloc driver-structn");
- 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++;
- set_global_features();
- restore_flags(flags);
- return 1;
- }
- /*
- *****************************************************************************
- * And now the modules code.
- *****************************************************************************
- */
- 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;
- }
- #ifdef CONFIG_DEVFS_FS
- static devfs_handle_t devfs_handle;
- static void isdn_register_devfs(int k)
- {
- char buf[11];
- sprintf (buf, "isdn%d", k);
- dev->devfs_handle_isdnX[k] =
- devfs_register (devfs_handle, buf, DEVFS_FL_DEFAULT,
- ISDN_MAJOR, ISDN_MINOR_B + k,0600 | S_IFCHR,
- &isdn_fops, NULL);
- sprintf (buf, "isdnctrl%d", k);
- dev->devfs_handle_isdnctrlX[k] =
- devfs_register (devfs_handle, buf, DEVFS_FL_DEFAULT,
- ISDN_MAJOR, ISDN_MINOR_CTRL + k, 0600 | S_IFCHR,
- &isdn_fops, NULL);
- }
- static void isdn_unregister_devfs(int k)
- {
- devfs_unregister (dev->devfs_handle_isdnX[k]);
- devfs_unregister (dev->devfs_handle_isdnctrlX[k]);
- }
- static void isdn_init_devfs(void)
- {
- # ifdef CONFIG_ISDN_PPP
- int i;
- # endif
- devfs_handle = devfs_mk_dir (NULL, "isdn", NULL);
- # ifdef CONFIG_ISDN_PPP
- for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
- char buf[8];
- sprintf (buf, "ippp%d", i);
- dev->devfs_handle_ipppX[i] =
- devfs_register (devfs_handle, buf, DEVFS_FL_DEFAULT,
- ISDN_MAJOR, ISDN_MINOR_PPP + i,
- 0600 | S_IFCHR, &isdn_fops, NULL);
- }
- # endif
- dev->devfs_handle_isdninfo =
- devfs_register (devfs_handle, "isdninfo", DEVFS_FL_DEFAULT,
- ISDN_MAJOR, ISDN_MINOR_STATUS, 0600 | S_IFCHR,
- &isdn_fops, NULL);
- dev->devfs_handle_isdnctrl =
- devfs_register (devfs_handle, "isdnctrl", DEVFS_FL_DEFAULT,
- ISDN_MAJOR, ISDN_MINOR_CTRL, 0600 | S_IFCHR,
- &isdn_fops, NULL);
- }
- static void isdn_cleanup_devfs(void)
- {
- # ifdef CONFIG_ISDN_PPP
- int i;
- for (i = 0; i < ISDN_MAX_CHANNELS; i++)
- devfs_unregister (dev->devfs_handle_ipppX[i]);
- # endif
- devfs_unregister (dev->devfs_handle_isdninfo);
- devfs_unregister (dev->devfs_handle_isdnctrl);
- devfs_unregister (devfs_handle);
- }
- #else /* CONFIG_DEVFS_FS */
- static void isdn_register_devfs(int dummy)
- {
- return;
- }
- static void isdn_unregister_devfs(int dummy)
- {
- return;
- }
- static void isdn_init_devfs(void)
- {
- return;
- }
- static void isdn_cleanup_devfs(void)
- {
- return;
- }
- #endif /* CONFIG_DEVFS_FS */
- /*
- * Allocate and initialize all data, register modem-devices
- */
- static int __init 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;
- init_MUTEX(&dev->sem);
- init_waitqueue_head(&dev->info_waitq);
- 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], "???");
- init_waitqueue_head(&dev->mdm.info[i].open_wait);
- init_waitqueue_head(&dev->mdm.info[i].close_wait);
- }
- if (devfs_register_chrdev(ISDN_MAJOR, "isdn", &isdn_fops)) {
- printk(KERN_WARNING "isdn: Could not register control devicesn");
- vfree(dev);
- return -EIO;
- }
- isdn_init_devfs();
- if ((i = isdn_tty_modem_init()) < 0) {
- printk(KERN_WARNING "isdn: Could not register tty devicesn");
- if (i == -3)
- tty_unregister_driver(&dev->mdm.cua_modem);
- if (i <= -2)
- tty_unregister_driver(&dev->mdm.tty_modem);
- vfree(dev);
- isdn_cleanup_devfs();
- devfs_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-structsn");
- 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);
- isdn_cleanup_devfs();
- devfs_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(" loadedn");
- #else
- printk("n");
- #endif
- isdn_info_update();
- return 0;
- }
- /*
- * Unload module
- */
- static void __exit isdn_exit(void)
- {
- unsigned long 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 cancelledn");
- restore_flags(flags);
- return;
- }
- if (tty_unregister_driver(&dev->mdm.tty_modem)) {
- printk(KERN_WARNING "isdn: ttyI-device busy, remove cancelledn");
- restore_flags(flags);
- return;
- }
- if (tty_unregister_driver(&dev->mdm.cua_modem)) {
- printk(KERN_WARNING "isdn: cui-device busy, remove cancelledn");
- 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 (devfs_unregister_chrdev(ISDN_MAJOR, "isdn") != 0) {
- printk(KERN_WARNING "isdn: controldevice busy, remove cancelledn");
- restore_flags(flags);
- } else {
- isdn_cleanup_devfs();
- del_timer(&dev->timer);
- restore_flags(flags);
- /* call vfree with interrupts enabled, else it will hang */
- vfree(dev);
- printk(KERN_NOTICE "ISDN-subsystem unloadedn");
- }
- }
- module_init(isdn_init);
- module_exit(isdn_exit);