3214 lines
88 KiB
C
3214 lines
88 KiB
C
/* $Id$
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* Linux ISDN subsystem, network interfaces and related functions (linklevel).
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*
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* Copyright 1994-1998 by Fritz Elfert (fritz@isdn4linux.de)
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* Copyright 1995,96 by Thinking Objects Software GmbH Wuerzburg
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* Copyright 1995,96 by Michael Hipp (Michael.Hipp@student.uni-tuebingen.de)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* $Log$
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* Revision 1.82 1999/01/17 00:55:58 he
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* added mark_bh in BCONN statcallb and cleaned up some dead code
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*
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* Revision 1.81 1999/01/15 16:36:52 he
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* replaced icmp_send() by dst_link_failure()
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*
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* Revision 1.80 1998/12/01 13:06:22 paul
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* Also huptimeout with dialmode == manual
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*
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* Revision 1.79 1998/10/30 17:55:27 he
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* dialmode for x25iface and multulink ppp
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*
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* Revision 1.78 1998/10/26 18:20:46 he
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* re-inserted p=p->next in isdn_net_find_icall() (fixes kernel lock up
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* on incoming call not matching the first interface)
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*
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* Revision 1.77 1998/10/23 10:18:44 paul
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* Implementation of "dialmode" (successor of "status")
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* You also need current isdnctrl for this!
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*
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* Revision 1.76 1998/09/07 22:00:05 he
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* flush method for 2.1.118 and above
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* updated IIOCTLNETGPN
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*
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* Revision 1.75 1998/08/31 21:09:50 he
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* new ioctl IIOCNETGPN for /dev/isdninfo (get network interface'
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* peer phone number)
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*
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* Revision 1.74 1998/07/30 11:28:32 paul
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* printk message only appeared when status is off and interface is rawIP,
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* which is confusing for people who don't know about "isdnctrl status <if> on".
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*
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* Revision 1.73 1998/06/26 22:01:37 keil
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* tx_queue_len = 5 was too small
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*
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* Revision 1.72 1998/06/26 15:12:31 fritz
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* Added handling of STAT_ICALL with incomplete CPN.
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* Added AT&L for ttyI emulator.
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* Added more locking stuff in tty_write.
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*
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* Revision 1.71 1998/06/18 22:43:08 fritz
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* Bugfix: Setting ndev->do_ioctl had beed accidetly removed at abc-cleanup.
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*
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* Revision 1.70 1998/06/17 19:50:49 he
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* merged with 2.1.10[34] (cosmetics and udelay() -> mdelay())
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* brute force fix to avoid Ugh's in isdn_tty_write()
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* cleaned up some dead code
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*
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* Revision 1.69 1998/06/09 12:27:37 cal
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* Changed default of local netdev flags: ISDN_NET_STOPPED is default now,
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* so autodial is suppressed for that device until it is switched on using
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* 'isdnctrl status dev-name on'.
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*
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* Revision 1.68 1998/06/07 00:20:05 fritz
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* abc cleanup.
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*
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* Revision 1.67 1998/06/02 12:10:08 detabc
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* wegen einer einstweiliger verfuegung gegen DW ist zur zeit
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* die abc-extension bis zur klaerung der rechtslage nicht verfuegbar
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*
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* Revision 1.66 1998/05/26 22:39:24 he
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* sync'ed with 2.1.102 where appropriate (CAPABILITY changes)
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* concap typo
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* cleared dev.tbusy in isdn_net BCONN status callback
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*
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* Revision 1.65 1998/05/22 10:01:11 detabc
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* in case of a icmp-unreach condition the tcp-keepalive-entrys
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* will be dropped from the internal double-link-list (only abc-extension).
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* send icmp unreach only if the skb->protocol == ETH_P_IP
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* speedup abc-no-dchan redial
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*
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* Revision 1.64 1998/05/07 19:58:39 detabc
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* bugfix in abc_delayed_hangup
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* optimize keepalive-tests for abc_rawip
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*
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* Revision 1.63 1998/05/05 23:23:36 detabc
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* change ICMP_HOST_UNREACH to ICMP_NET_UNREACH (only abc-ext.)
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* set dev->tbusy to zero in isdn_net_unreachable() (only abc-ext.)
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* drop all new packets and send ICMP_NET_UNREACH for
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* min. dialwait to max. dialwait * 6 time. (only abc-ext.)
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* change random-deliver of packets (small first) from all emcapsulation
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* to only rawip with ABC-Router-Flag enabled.
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*
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* Revision 1.62 1998/05/03 17:40:42 detabc
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* Include abc-extension-support for >= 2.1.x Kernels in
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* isdn_net.c and isdn_common.c. alpha-test OK and running !
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*
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* Revision 1.61 1998/04/16 19:19:42 keil
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* Fix from vger (tx max qlength)
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*
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* Revision 1.60 1998/04/14 16:28:49 he
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* Fixed user space access with interrupts off and remaining
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* copy_{to,from}_user() -> -EFAULT return codes
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*
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* Revision 1.59 1998/03/07 22:37:33 fritz
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* Bugfix: restore_flags missing.
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*
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* Revision 1.58 1998/03/07 18:21:05 cal
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* Dynamic Timeout-Rule-Handling vs. 971110 included
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*
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* Revision 1.57 1998/02/25 18:31:13 fritz
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* Added debugging output in adjust_header.
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*
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* Revision 1.56 1998/02/25 17:49:42 he
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* Changed return codes caused be failing copy_{to,from}_user to -EFAULT
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*
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* Revision 1.55 1998/02/23 19:38:22 fritz
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* Corrected check for modified feature-flags.
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*
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* Revision 1.54 1998/02/20 17:15:07 fritz
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* Changes for recent kernels.
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* Ugly workaround for adjusting Ethernet frames with recent kernels.
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* replaced direct calls to lowlevel-driver command by common hook.
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*
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* Revision 1.53 1998/01/31 22:05:54 keil
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* Lots of changes for X.25 support:
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* Added generic support for connection-controlling encapsulation protocols
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* Added support of BHUP status message
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* Added support for additional p_encap X25IFACE
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* Added support for kernels >= 2.1.72
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*
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* Revision 1.52 1998/01/31 19:29:51 calle
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* Merged changes from and for 2.1.82, not tested only compiled ...
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*
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* Revision 1.51 1997/10/09 21:28:50 fritz
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* New HL<->LL interface:
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* New BSENT callback with nr. of bytes included.
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* Sending without ACK.
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* New L1 error status (not yet in use).
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* Cleaned up obsolete structures.
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* Implemented Cisco-SLARP.
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* Changed local net-interface data to be dynamically allocated.
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* Removed old 2.0 compatibility stuff.
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*
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* Revision 1.50 1997/10/01 09:20:32 fritz
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* Removed old compatibility stuff for 2.0.X kernels.
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* From now on, this code is for 2.1.X ONLY!
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* Old stuff is still in the separate branch.
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*
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* Revision 1.49 1997/08/21 14:38:13 fritz
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* Bugfix: Did not compile without SyncPPP.
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*
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* Revision 1.48 1997/06/22 11:57:15 fritz
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* Added ability to adjust slave triggerlevel.
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*
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* Revision 1.47 1997/06/21 10:52:05 fritz
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* Removed wrong SET_SKB_FREE in isdn_net_send_skb()
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*
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* Revision 1.46 1997/06/17 13:05:24 hipp
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* Applied Eric's underflow-patches (slightly modified)
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*
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* Revision 1.45 1997/06/10 16:24:22 hipp
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* hard_header changes for syncPPP (now behaves like RAWIP)
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*
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* Revision 1.44 1997/05/27 15:17:26 fritz
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* Added changes for recent 2.1.x kernels:
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* changed return type of isdn_close
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* queue_task_* -> queue_task
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* clear/set_bit -> test_and_... where apropriate.
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* changed type of hard_header_cache parameter.
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*
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* Revision 1.43 1997/03/30 16:51:13 calle
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* changed calls to copy_from_user/copy_to_user and removed verify_area
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* were possible.
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*
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* Revision 1.42 1997/03/11 08:43:51 fritz
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* Perform a hangup if number is deleted while dialing.
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*
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* Revision 1.41 1997/03/08 08:16:31 fritz
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* Bugfix: Deleting a phone number during dial gave unpredictable results.
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*
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* Revision 1.40 1997/03/05 21:16:08 fritz
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* Fix: did not compile with 2.1.27
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*
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* Revision 1.39 1997/03/04 21:36:52 fritz
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* Added sending ICMP messages when no connetion is possible.
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*
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* Revision 1.38 1997/02/23 23:41:14 fritz
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* Bugfix: Slave interfaces have to be hung up before master.
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*
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* Revision 1.37 1997/02/11 18:32:51 fritz
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* Bugfix in isdn_ppp_free_mpqueue().
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*
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* Revision 1.36 1997/02/10 21:31:11 fritz
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* Changed setup-interface (incoming and outgoing).
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*
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* Revision 1.35 1997/02/10 20:12:45 fritz
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* Changed interface for reporting incoming calls.
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*
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* Revision 1.34 1997/02/03 23:15:07 fritz
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* Reformatted according CodingStyle.
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* replaced arp_find prototype by proper include.
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* made dev_purge_queues static.
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* Bugfix in bogocps calculation.
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* removed isdn_net_receive_callback - was never used ;-)
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* Misc. fixes for Kernel 2.1.X comaptibility.
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*
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* Revision 1.33 1997/01/17 01:19:25 fritz
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* Applied chargeint patch.
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*
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* Revision 1.32 1997/01/14 01:29:31 fritz
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* Bugfix: isdn_net_hangup() did not reset ISDN_NET_CONNECTED.
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*
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* Revision 1.31 1997/01/11 23:30:42 fritz
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* Speed up dial statemachine.
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*
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* Revision 1.30 1996/11/25 17:20:50 hipp
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* fixed pppbind bug in isdn_net_find_icall()
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*
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* Revision 1.29 1996/11/13 02:31:38 fritz
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* Minor cleanup.
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*
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* Revision 1.28 1996/10/27 20:49:06 keil
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* bugfix to compile without MPP
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*
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* Revision 1.27 1996/10/25 18:46:01 fritz
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* Another bugfix in isdn_net_autohup()
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*
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* Revision 1.26 1996/10/23 23:05:36 fritz
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* Bugfix: Divide by zero in isdn_net_autohup()
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*
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* Revision 1.25 1996/10/22 23:13:58 fritz
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* Changes for compatibility to 2.0.X and 2.1.X kernels.
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*
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* Revision 1.24 1996/10/11 13:57:40 fritz
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* Bugfix: Error in BogoCPS calculation.
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*
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* Revision 1.23 1996/09/23 01:58:08 fritz
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* Fix: With syncPPP encapsulation, discard LCP packets
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* when calculating hangup timeout.
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*
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* Revision 1.22 1996/09/23 00:03:37 fritz
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* Fix: did not compile without CONFIG_ISDN_PPP
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*
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* Revision 1.21 1996/09/07 12:44:50 hipp
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* (hopefully) fixed callback problem with syncPPP
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* syncPPP network devices now show PPP link encap
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*
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* Revision 1.20 1996/08/29 20:06:03 fritz
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* Bugfix: Transmission timeout had been much to low.
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*
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* Revision 1.19 1996/08/12 16:24:32 hipp
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* removed some (now) obsolete functions for syncPPP in rebuild_header etc.
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*
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* Revision 1.18 1996/07/03 13:48:51 hipp
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* bugfix: Call dev_purge_queues() only for master device
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*
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* Revision 1.17 1996/06/25 18:37:37 fritz
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* Fixed return count for empty return string in isdn_net_getphones().
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*
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* Revision 1.16 1996/06/24 17:48:08 fritz
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* Bugfixes:
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* - Did not free channel on unbinding.
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* - ioctl returned wrong callback settings.
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*
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* Revision 1.15 1996/06/16 17:42:54 tsbogend
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* fixed problem with IP addresses on Linux/Alpha (long is 8 byte there)
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*
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* Revision 1.14 1996/06/11 14:54:08 hipp
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* minor bugfix in isdn_net_send_skb
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* changes in BSENT callback handler for syncPPP
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* added lp->sav_skb stuff
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*
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* Revision 1.13 1996/06/06 14:25:44 fritz
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* Changed loglevel of "incoming ... without OAD" message, since
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* with audio support this is quite normal.
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*
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* Revision 1.12 1996/06/05 02:36:45 fritz
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* Minor bugfixes by M. Hipp.
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*
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* Revision 1.11 1996/05/18 01:36:59 fritz
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* Added spelling corrections and some minor changes
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* to stay in sync with kernel.
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*
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* Revision 1.10 1996/05/17 03:49:01 fritz
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* Some cleanup.
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*
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* Revision 1.9 1996/05/06 11:34:57 hipp
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* fixed a few bugs
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*
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* Revision 1.8 1996/04/30 21:04:40 fritz
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* Test commit
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*
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* Revision 1.7 1996/04/30 11:10:42 fritz
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* Added Michael's ippp-bind patch.
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*
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* Revision 1.6 1996/04/30 09:34:35 fritz
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* Removed compatibility-macros.
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*
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* Revision 1.5 1996/04/20 16:28:38 fritz
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* Made more parameters of the dial statemachine user-configurable and
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* added hangup after dial for more reliability using callback.
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* Changed all io going through generic routines in isdn_common.c
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* Added missing call to dev_free_skb on failed dialing.
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* Added uihdlc encapsulation.
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* Fixed isdn_net_setcfg not to destroy interface-flags anymore.
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* Misc. typos.
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*
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* Revision 1.4 1996/02/19 15:23:38 fritz
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* Bugfix: Sync-PPP packets got compressed twice, when resent due to
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* send-queue-full reject.
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*
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* Revision 1.3 1996/02/11 02:22:28 fritz
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* Changed status- receive-callbacks to use pointer-arrays for finding
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* a corresponding interface instead of looping over all interfaces.
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* Activate Auto-hangup-timer only when interface is online.
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* Some bugfixes in the dialing-statemachine.
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* Lot of bugfixes in sk_buff'ized encapsulation handling.
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* For speedup connection-setup after dialing, remember sk_buf that triggered
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* dialing.
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* Fixed isdn_net_log_packet according to different encapsulations.
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* Correct ARP-handling for ETHERNET-encapsulation.
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*
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* Revision 1.2 1996/01/22 05:05:12 fritz
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* Changed returncode-logic for isdn_net_start_xmit() and its
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* helper-functions.
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* Changed handling of buildheader for RAWIP and ETHERNET-encapsulation.
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*
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* Revision 1.1 1996/01/09 04:12:34 fritz
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* Initial revision
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*
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*/
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#include <linux/config.h>
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#define __NO_VERSION__
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#include <linux/module.h>
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#include <linux/isdn.h>
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#include <net/arp.h>
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#include <net/dst.h>
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#include <net/pkt_sched.h>
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#include <linux/inetdevice.h>
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#include "isdn_common.h"
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#include "isdn_net.h"
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#ifdef CONFIG_ISDN_PPP
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#include "isdn_ppp.h"
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#endif
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#ifdef CONFIG_ISDN_X25
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#include <linux/concap.h>
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#include "isdn_concap.h"
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#endif
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/* Prototypes */
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int isdn_net_force_dial_lp(isdn_net_local *);
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static int isdn_net_start_xmit(struct sk_buff *, struct device *);
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static int isdn_net_xmit(struct device *, isdn_net_local *, struct sk_buff *);
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char *isdn_net_revision = "$Revision$";
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/*
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* Code for raw-networking over ISDN
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*/
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static void
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isdn_net_unreachable(struct device *dev, struct sk_buff *skb, char *reason)
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{
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if(skb) {
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u_short proto = ntohs(skb->protocol);
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printk(KERN_DEBUG "isdn_net: %s: %s, signalling dst_link_failure %s\n",
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dev->name,
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(reason != NULL) ? reason : "unknown",
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(proto != ETH_P_IP) ? "Protocol != ETH_P_IP" : "");
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dst_link_failure(skb);
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}
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else { /* dial not triggered by rawIP packet */
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printk(KERN_DEBUG "isdn_net: %s: %s\n",
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dev->name,
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(reason != NULL) ? reason : "reason unknown");
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}
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}
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static void
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isdn_net_reset(struct device *dev)
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{
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#ifdef CONFIG_ISDN_X25
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struct concap_device_ops * dops =
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( (isdn_net_local *) dev->priv ) -> dops;
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struct concap_proto * cprot =
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( (isdn_net_local *) dev->priv ) -> netdev -> cprot;
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#endif
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ulong flags;
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save_flags(flags);
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cli(); /* Avoid glitch on writes to CMD regs */
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dev->interrupt = 0;
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dev->tbusy = 0;
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#ifdef CONFIG_ISDN_X25
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if( cprot && cprot -> pops && dops )
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cprot -> pops -> restart ( cprot, dev, dops );
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#endif
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restore_flags(flags);
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}
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/* Open/initialize the board. */
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static int
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isdn_net_open(struct device *dev)
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{
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int i;
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struct device *p;
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struct in_device *in_dev;
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isdn_net_reset(dev);
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dev->start = 1;
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/* Fill in the MAC-level header (not needed, but for compatibility... */
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for (i = 0; i < ETH_ALEN - sizeof(u32); i++)
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dev->dev_addr[i] = 0xfc;
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if ((in_dev = dev->ip_ptr) != NULL) {
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/*
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* Any address will do - we take the first
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*/
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struct in_ifaddr *ifa = in_dev->ifa_list;
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if (ifa != NULL)
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memcpy(dev->dev_addr+2, &ifa->ifa_local, 4);
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}
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/* If this interface has slaves, start them also */
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if ((p = (((isdn_net_local *) dev->priv)->slave))) {
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while (p) {
|
|
isdn_net_reset(p);
|
|
p->start = 1;
|
|
p = (((isdn_net_local *) p->priv)->slave);
|
|
}
|
|
}
|
|
isdn_MOD_INC_USE_COUNT();
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Assign an ISDN-channel to a net-interface
|
|
*/
|
|
static void
|
|
isdn_net_bind_channel(isdn_net_local * lp, int idx)
|
|
{
|
|
ulong flags;
|
|
|
|
save_flags(flags);
|
|
cli();
|
|
lp->flags |= ISDN_NET_CONNECTED;
|
|
lp->isdn_device = dev->drvmap[idx];
|
|
lp->isdn_channel = dev->chanmap[idx];
|
|
dev->rx_netdev[idx] = lp->netdev;
|
|
dev->st_netdev[idx] = lp->netdev;
|
|
restore_flags(flags);
|
|
}
|
|
|
|
/*
|
|
* unbind a net-interface (resets interface after an error)
|
|
*/
|
|
static void
|
|
isdn_net_unbind_channel(isdn_net_local * lp)
|
|
{
|
|
ulong flags;
|
|
|
|
save_flags(flags);
|
|
cli();
|
|
if (lp->first_skb) {
|
|
dev_kfree_skb(lp->first_skb);
|
|
lp->first_skb = NULL;
|
|
}
|
|
if (lp->sav_skb) {
|
|
dev_kfree_skb(lp->sav_skb);
|
|
lp->sav_skb = NULL;
|
|
}
|
|
if (!lp->master) { /* reset only master device */
|
|
/* Moral equivalent of dev_purge_queues():
|
|
BEWARE! This chunk of code cannot be called from hardware
|
|
interrupt handler. I hope it is true. --ANK
|
|
*/
|
|
qdisc_reset(lp->netdev->dev.qdisc);
|
|
}
|
|
lp->dialstate = 0;
|
|
dev->rx_netdev[isdn_dc2minor(lp->isdn_device, lp->isdn_channel)] = NULL;
|
|
dev->st_netdev[isdn_dc2minor(lp->isdn_device, lp->isdn_channel)] = NULL;
|
|
isdn_free_channel(lp->isdn_device, lp->isdn_channel, ISDN_USAGE_NET);
|
|
lp->flags &= ~ISDN_NET_CONNECTED;
|
|
lp->isdn_device = -1;
|
|
lp->isdn_channel = -1;
|
|
|
|
restore_flags(flags);
|
|
}
|
|
|
|
/*
|
|
* Perform auto-hangup and cps-calculation for net-interfaces.
|
|
*
|
|
* auto-hangup:
|
|
* Increment idle-counter (this counter is reset on any incoming or
|
|
* outgoing packet), if counter exceeds configured limit either do a
|
|
* hangup immediately or - if configured - wait until just before the next
|
|
* charge-info.
|
|
*
|
|
* cps-calculation (needed for dynamic channel-bundling):
|
|
* Since this function is called every second, simply reset the
|
|
* byte-counter of the interface after copying it to the cps-variable.
|
|
*/
|
|
unsigned long last_jiffies = -HZ;
|
|
|
|
void
|
|
isdn_net_autohup()
|
|
{
|
|
isdn_net_dev *p = dev->netdev;
|
|
int anymore;
|
|
|
|
anymore = 0;
|
|
while (p) {
|
|
isdn_net_local *l = p->local;
|
|
if ((jiffies - last_jiffies) == 0)
|
|
l->cps = l->transcount;
|
|
else
|
|
l->cps = (l->transcount * HZ) / (jiffies - last_jiffies);
|
|
l->transcount = 0;
|
|
if (dev->net_verbose > 3)
|
|
printk(KERN_DEBUG "%s: %d bogocps\n", l->name, l->cps);
|
|
if ((l->flags & ISDN_NET_CONNECTED) && (!l->dialstate)) {
|
|
anymore = 1;
|
|
l->huptimer++;
|
|
/*
|
|
* if there is some dialmode where timeout-hangup
|
|
* should _not_ be done, check for that here and
|
|
* 37 lines below (ifdef CONFIG_ISDN_BUDGET)
|
|
* eg: (ISDN_NET_DIALMODE(*l) != ISDN_NET_DM_NOTIMEOUT)
|
|
*/
|
|
#ifdef CONFIG_ISDN_TIMEOUT_RULES
|
|
if ((l->timeout_rules || l->huptimeout) &&
|
|
(l->huptimer > l->huptimeout))
|
|
#else
|
|
if ((l->onhtime) &&
|
|
(l->huptimer > l->onhtime))
|
|
#endif
|
|
{
|
|
if (l->hupflags & ISDN_MANCHARGE &&
|
|
l->hupflags & ISDN_CHARGEHUP) {
|
|
while (jiffies - l->chargetime > l->chargeint)
|
|
l->chargetime += l->chargeint;
|
|
if (jiffies - l->chargetime >= l->chargeint - 2 * HZ)
|
|
if (l->outgoing || l->hupflags & ISDN_INHUP)
|
|
isdn_net_hangup(&p->dev);
|
|
} else if (l->outgoing) {
|
|
if (l->hupflags & ISDN_CHARGEHUP) {
|
|
if (l->hupflags & ISDN_WAITCHARGE) {
|
|
printk(KERN_DEBUG "isdn_net: Hupflags of %s are %X\n",
|
|
l->name, l->hupflags);
|
|
isdn_net_hangup(&p->dev);
|
|
} else if (jiffies - l->chargetime > l->chargeint) {
|
|
printk(KERN_DEBUG
|
|
"isdn_net: %s: chtime = %d, chint = %d\n",
|
|
l->name, l->chargetime, l->chargeint);
|
|
isdn_net_hangup(&p->dev);
|
|
}
|
|
} else
|
|
isdn_net_hangup(&p->dev);
|
|
} else if (l->hupflags & ISDN_INHUP)
|
|
isdn_net_hangup(&p->dev);
|
|
}
|
|
#ifdef CONFIG_ISDN_BUDGET
|
|
if(isdn_net_budget(ISDN_BUDGET_CHECK_ONLINE, &p->dev)) {
|
|
isdn_net_hangup(&p->dev);
|
|
}
|
|
#endif
|
|
|
|
if(dev->global_flags & ISDN_GLOBAL_STOPPED || (ISDN_NET_DIALMODE(*l) == ISDN_NET_DM_OFF)) {
|
|
isdn_net_hangup(&p->dev);
|
|
break;
|
|
}
|
|
}
|
|
p = (isdn_net_dev *) p->next;
|
|
}
|
|
last_jiffies = jiffies;
|
|
isdn_timer_ctrl(ISDN_TIMER_NETHANGUP, anymore);
|
|
}
|
|
|
|
/*
|
|
* Handle status-messages from ISDN-interfacecard.
|
|
* This function is called from within the main-status-dispatcher
|
|
* isdn_status_callback, which itself is called from the low-level driver.
|
|
* Return: 1 = Event handled, 0 = not for us or unknown Event.
|
|
*/
|
|
int
|
|
isdn_net_stat_callback(int idx, isdn_ctrl *c)
|
|
{
|
|
isdn_net_dev *p = dev->st_netdev[idx];
|
|
int cmd = c->command;
|
|
|
|
if (p) {
|
|
isdn_net_local *lp = p->local;
|
|
#ifdef CONFIG_ISDN_X25
|
|
struct concap_proto *cprot = lp -> netdev -> cprot;
|
|
struct concap_proto_ops *pops = cprot ? cprot -> pops : 0;
|
|
#endif
|
|
switch (cmd) {
|
|
case ISDN_STAT_BSENT:
|
|
/* A packet has successfully been sent out */
|
|
if ((lp->flags & ISDN_NET_CONNECTED) &&
|
|
(!lp->dialstate)) {
|
|
lp->stats.tx_packets++;
|
|
lp->stats.tx_bytes += c->parm.length;
|
|
if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP && lp->sav_skb) {
|
|
struct device *mdev;
|
|
if (lp->master)
|
|
mdev = lp->master;
|
|
else
|
|
mdev = &lp->netdev->dev;
|
|
if (!isdn_net_send_skb(mdev, lp, lp->sav_skb)) {
|
|
lp->sav_skb = NULL;
|
|
mark_bh(NET_BH);
|
|
} else {
|
|
return 1;
|
|
}
|
|
}
|
|
if (test_and_clear_bit(0, (void *) &(p->dev.tbusy)))
|
|
mark_bh(NET_BH);
|
|
}
|
|
return 1;
|
|
case ISDN_STAT_DCONN:
|
|
/* D-Channel is up */
|
|
switch (lp->dialstate) {
|
|
case 4:
|
|
case 7:
|
|
case 8:
|
|
lp->dialstate++;
|
|
return 1;
|
|
case 12:
|
|
lp->dialstate = 5;
|
|
return 1;
|
|
}
|
|
break;
|
|
case ISDN_STAT_DHUP:
|
|
/* Either D-Channel-hangup or error during dialout */
|
|
#ifdef CONFIG_ISDN_X25
|
|
/* If we are not connencted then dialing had
|
|
failed. If there are generic encap protocol
|
|
receiver routines signal the closure of
|
|
the link*/
|
|
|
|
if( !(lp->flags & ISDN_NET_CONNECTED)
|
|
&& pops && pops -> disconn_ind )
|
|
pops -> disconn_ind(cprot);
|
|
#endif /* CONFIG_ISDN_X25 */
|
|
if ((!lp->dialstate) && (lp->flags & ISDN_NET_CONNECTED)) {
|
|
#ifdef CONFIG_ISDN_PPP
|
|
isdn_ppp_free(lp);
|
|
#endif
|
|
isdn_all_eaz(lp->isdn_device, lp->isdn_channel);
|
|
printk(KERN_INFO "%s: remote hangup\n", lp->name);
|
|
printk(KERN_INFO "%s: Chargesum is %d\n", lp->name,
|
|
lp->charge);
|
|
isdn_net_unbind_channel(lp);
|
|
return 1;
|
|
}
|
|
break;
|
|
#ifdef CONFIG_ISDN_X25
|
|
case ISDN_STAT_BHUP:
|
|
/* B-Channel-hangup */
|
|
/* try if there are generic encap protocol
|
|
receiver routines and signal the closure of
|
|
the link */
|
|
if( pops && pops -> disconn_ind ){
|
|
pops -> disconn_ind(cprot);
|
|
return 1;
|
|
}
|
|
break;
|
|
#endif /* CONFIG_ISDN_X25 */
|
|
case ISDN_STAT_BCONN:
|
|
/* B-Channel is up */
|
|
switch (lp->dialstate) {
|
|
case 5:
|
|
case 6:
|
|
case 7:
|
|
case 8:
|
|
case 9:
|
|
case 10:
|
|
case 12:
|
|
if (lp->dialstate <= 6) {
|
|
dev->usage[idx] |= ISDN_USAGE_OUTGOING;
|
|
isdn_info_update();
|
|
} else
|
|
dev->rx_netdev[idx] = p;
|
|
lp->dialstate = 0;
|
|
isdn_timer_ctrl(ISDN_TIMER_NETHANGUP, 1);
|
|
if (lp->p_encap == ISDN_NET_ENCAP_CISCOHDLCK)
|
|
isdn_timer_ctrl(ISDN_TIMER_KEEPALIVE, 1);
|
|
printk(KERN_INFO "isdn_net: %s connected\n", lp->name);
|
|
/* If first Chargeinfo comes before B-Channel connect,
|
|
* we correct the timestamp here.
|
|
*/
|
|
lp->chargetime = jiffies;
|
|
printk(KERN_DEBUG "isdn_net: chargetime of %s now %d\n",
|
|
lp->name, lp->chargetime);
|
|
|
|
/* reset dial-timeout */
|
|
lp->dialstarted = 0;
|
|
lp->dialwait_timer = 0;
|
|
#ifdef CONFIG_ISDN_BUDGET
|
|
(void)isdn_net_budget(ISDN_BUDGET_START_ONLINE, &p->dev);
|
|
(void)isdn_net_budget(ISDN_BUDGET_CHECK_CHARGE, &p->dev);
|
|
#endif
|
|
|
|
/* Immediately send first skb to speed up arp */
|
|
#ifdef CONFIG_ISDN_PPP
|
|
if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP)
|
|
isdn_ppp_wakeup_daemon(lp);
|
|
#endif
|
|
#ifdef CONFIG_ISDN_X25
|
|
/* try if there are generic concap receiver routines */
|
|
if( pops )
|
|
if( pops->connect_ind)
|
|
pops->connect_ind(cprot);
|
|
#endif /* CONFIG_ISDN_X25 */
|
|
if (lp->first_skb) {
|
|
|
|
if (!(isdn_net_xmit(&p->dev, lp, lp->first_skb)))
|
|
lp->first_skb = NULL;
|
|
}
|
|
else {
|
|
/*
|
|
* dev.tbusy is usually cleared implicitly by isdn_net_xmit(,,lp->first_skb).
|
|
* With an empty lp->first_skb, we need to do this ourselves
|
|
*/
|
|
lp->netdev->dev.tbusy = 0;
|
|
mark_bh(NET_BH);
|
|
#ifdef CONFIG_ISDN_TIMEOUT_RULES
|
|
/* recalc initial huptimeout,
|
|
there is no packet to match the rules. */
|
|
isdn_net_recalc_timeout(ISDN_TIMRU_BRINGUP, ISDN_TIMRU_PACKET_NONE, &p->dev, NULL, 0);
|
|
#endif
|
|
}
|
|
return 1;
|
|
}
|
|
break;
|
|
case ISDN_STAT_NODCH:
|
|
/* No D-Channel avail. */
|
|
if (lp->dialstate == 4) {
|
|
lp->dialstate--;
|
|
return 1;
|
|
}
|
|
break;
|
|
case ISDN_STAT_CINF:
|
|
/* Charge-info from TelCo. Calculate interval between
|
|
* charge-infos and set timestamp for last info for
|
|
* usage by isdn_net_autohup()
|
|
*/
|
|
lp->charge++;
|
|
if (lp->hupflags & ISDN_HAVECHARGE) {
|
|
lp->hupflags &= ~ISDN_WAITCHARGE;
|
|
lp->chargeint = jiffies - lp->chargetime - (2 * HZ);
|
|
}
|
|
if (lp->hupflags & ISDN_WAITCHARGE)
|
|
lp->hupflags |= ISDN_HAVECHARGE;
|
|
lp->chargetime = jiffies;
|
|
printk(KERN_DEBUG "isdn_net: Got CINF chargetime of %s now %d\n",
|
|
lp->name, lp->chargetime);
|
|
#ifdef CONFIG_ISDN_BUDGET
|
|
if(isdn_net_budget(ISDN_BUDGET_CHECK_CHARGE, &p->dev)) {
|
|
isdn_net_hangup(&p->dev);
|
|
}
|
|
#endif
|
|
return 1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Check, if a number contains wildcard-characters, in which case it
|
|
* is for incoming purposes only.
|
|
*/
|
|
static int
|
|
isdn_net_checkwild(char *num)
|
|
{
|
|
return ((strchr(num, '?')) ||
|
|
(strchr(num, '*')) ||
|
|
(strchr(num, '[')) ||
|
|
(strchr(num, ']')) ||
|
|
(strchr(num, '^')));
|
|
}
|
|
|
|
/*
|
|
* Perform dialout for net-interfaces and timeout-handling for
|
|
* D-Channel-up and B-Channel-up Messages.
|
|
* This function is initially called from within isdn_net_start_xmit() or
|
|
* or isdn_net_find_icall() after initializing the dialstate for an
|
|
* interface. If further calls are needed, the function schedules itself
|
|
* for a timer-callback via isdn_timer_function().
|
|
* The dialstate is also affected by incoming status-messages from
|
|
* the ISDN-Channel which are handled in isdn_net_stat_callback() above.
|
|
*/
|
|
void
|
|
isdn_net_dial(void)
|
|
{
|
|
isdn_net_dev *p = dev->netdev;
|
|
int anymore = 0;
|
|
int i;
|
|
int flags;
|
|
isdn_ctrl cmd;
|
|
|
|
while (p) {
|
|
isdn_net_local *lp = p->local;
|
|
|
|
#ifdef ISDN_DEBUG_NET_DIAL
|
|
if (lp->dialstate)
|
|
printk(KERN_DEBUG "%s: dialstate=%d\n", lp->name, lp->dialstate);
|
|
#endif
|
|
switch (lp->dialstate) {
|
|
case 0:
|
|
/* Nothing to do for this interface */
|
|
break;
|
|
case 1:
|
|
/* Initiate dialout. Set phone-number-pointer to first number
|
|
* of interface.
|
|
*/
|
|
save_flags(flags);
|
|
cli();
|
|
lp->dial = lp->phone[1];
|
|
restore_flags(flags);
|
|
if (!lp->dial) {
|
|
printk(KERN_WARNING "%s: phone number deleted?\n",
|
|
lp->name);
|
|
isdn_net_hangup(&p->dev);
|
|
break;
|
|
}
|
|
anymore = 1;
|
|
|
|
if(lp->dialtimeout > 0)
|
|
if(lp->dialstarted == 0 || jiffies > (lp->dialstarted + lp->dialtimeout + lp->dialwait)) {
|
|
lp->dialstarted = jiffies;
|
|
lp->dialwait_timer = 0;
|
|
}
|
|
|
|
lp->dialstate++;
|
|
/* Fall through */
|
|
case 2:
|
|
/* Prepare dialing. Clear EAZ, then set EAZ. */
|
|
cmd.driver = lp->isdn_device;
|
|
cmd.arg = lp->isdn_channel;
|
|
cmd.command = ISDN_CMD_CLREAZ;
|
|
isdn_command(&cmd);
|
|
sprintf(cmd.parm.num, "%s", isdn_map_eaz2msn(lp->msn, cmd.driver));
|
|
cmd.command = ISDN_CMD_SETEAZ;
|
|
isdn_command(&cmd);
|
|
lp->dialretry = 0;
|
|
anymore = 1;
|
|
lp->dialstate++;
|
|
/* Fall through */
|
|
case 3:
|
|
/* Setup interface, dial current phone-number, switch to next number.
|
|
* If list of phone-numbers is exhausted, increment
|
|
* retry-counter.
|
|
*/
|
|
if(dev->global_flags & ISDN_GLOBAL_STOPPED || (ISDN_NET_DIALMODE(*lp) == ISDN_NET_DM_OFF)) {
|
|
char *s;
|
|
if (dev->global_flags & ISDN_GLOBAL_STOPPED)
|
|
s = "dial suppressed: isdn system stopped";
|
|
else
|
|
s = "dial suppressed: dialmode `off'";
|
|
isdn_net_unreachable(&p->dev, lp->first_skb, s);
|
|
isdn_net_hangup(&p->dev);
|
|
break;
|
|
}
|
|
cmd.driver = lp->isdn_device;
|
|
cmd.command = ISDN_CMD_SETL2;
|
|
cmd.arg = lp->isdn_channel + (lp->l2_proto << 8);
|
|
isdn_command(&cmd);
|
|
cmd.driver = lp->isdn_device;
|
|
cmd.command = ISDN_CMD_SETL3;
|
|
cmd.arg = lp->isdn_channel + (lp->l3_proto << 8);
|
|
isdn_command(&cmd);
|
|
cmd.driver = lp->isdn_device;
|
|
cmd.arg = lp->isdn_channel;
|
|
save_flags(flags);
|
|
cli();
|
|
if (!lp->dial) {
|
|
restore_flags(flags);
|
|
printk(KERN_WARNING "%s: phone number deleted?\n",
|
|
lp->name);
|
|
isdn_net_hangup(&p->dev);
|
|
break;
|
|
}
|
|
if (!strcmp(lp->dial->num, "LEASED")) {
|
|
restore_flags(flags);
|
|
lp->dialstate = 4;
|
|
printk(KERN_INFO "%s: Open leased line ...\n", lp->name);
|
|
} else {
|
|
#ifdef CONFIG_ISDN_BUDGET
|
|
if(isdn_net_budget(ISDN_BUDGET_CHECK_DIAL, &p->dev)) {
|
|
restore_flags(flags);
|
|
isdn_net_unreachable(&p->dev, lp->first_skb, "dial: budget(s) used up");
|
|
isdn_net_hangup(&p->dev);
|
|
break;
|
|
}
|
|
#endif
|
|
if(lp->dialtimeout > 0)
|
|
if(jiffies > (lp->dialstarted + lp->dialtimeout)) {
|
|
restore_flags(flags);
|
|
lp->dialwait_timer = jiffies + lp->dialwait;
|
|
lp->dialstarted = 0;
|
|
isdn_net_unreachable(&p->dev, lp->first_skb, "dial: timed out");
|
|
isdn_net_hangup(&p->dev);
|
|
break;
|
|
}
|
|
|
|
sprintf(cmd.parm.setup.phone, "%s", lp->dial->num);
|
|
/*
|
|
* Switch to next number or back to start if at end of list.
|
|
*/
|
|
if (!(lp->dial = (isdn_net_phone *) lp->dial->next)) {
|
|
lp->dial = lp->phone[1];
|
|
lp->dialretry++;
|
|
|
|
if (lp->dialretry > lp->dialmax) {
|
|
restore_flags(flags);
|
|
if (lp->dialtimeout == 0) {
|
|
lp->dialwait_timer = jiffies + lp->dialwait;
|
|
lp->dialstarted = 0;
|
|
isdn_net_unreachable(&p->dev, lp->first_skb, "dial: tried all numbers dialmax times");
|
|
}
|
|
isdn_net_hangup(&p->dev);
|
|
break;
|
|
}
|
|
}
|
|
restore_flags(flags);
|
|
cmd.driver = lp->isdn_device;
|
|
cmd.command = ISDN_CMD_DIAL;
|
|
cmd.parm.setup.si1 = 7;
|
|
cmd.parm.setup.si2 = 0;
|
|
sprintf(cmd.parm.setup.eazmsn, "%s",
|
|
isdn_map_eaz2msn(lp->msn, cmd.driver));
|
|
i = isdn_dc2minor(lp->isdn_device, lp->isdn_channel);
|
|
if (i >= 0) {
|
|
strcpy(dev->num[i], cmd.parm.setup.phone);
|
|
isdn_info_update();
|
|
}
|
|
printk(KERN_INFO "%s: dialing %d %s...\n", lp->name,
|
|
lp->dialretry, cmd.parm.setup.phone);
|
|
lp->dtimer = 0;
|
|
#ifdef ISDN_DEBUG_NET_DIAL
|
|
printk(KERN_DEBUG "dial: d=%d c=%d\n", lp->isdn_device,
|
|
lp->isdn_channel);
|
|
#endif
|
|
isdn_command(&cmd);
|
|
}
|
|
lp->huptimer = 0;
|
|
lp->outgoing = 1;
|
|
if (lp->chargeint) {
|
|
lp->hupflags |= ISDN_HAVECHARGE;
|
|
lp->hupflags &= ~ISDN_WAITCHARGE;
|
|
} else {
|
|
lp->hupflags |= ISDN_WAITCHARGE;
|
|
lp->hupflags &= ~ISDN_HAVECHARGE;
|
|
}
|
|
anymore = 1;
|
|
lp->dialstate =
|
|
(lp->cbdelay &&
|
|
(lp->flags & ISDN_NET_CBOUT)) ? 12 : 4;
|
|
break;
|
|
case 4:
|
|
/* Wait for D-Channel-connect.
|
|
* If timeout, switch back to state 3.
|
|
* Dialmax-handling moved to state 3.
|
|
*/
|
|
if (lp->dtimer++ > ISDN_TIMER_DTIMEOUT10)
|
|
lp->dialstate = 3;
|
|
anymore = 1;
|
|
break;
|
|
case 5:
|
|
/* Got D-Channel-Connect, send B-Channel-request */
|
|
cmd.driver = lp->isdn_device;
|
|
cmd.arg = lp->isdn_channel;
|
|
cmd.command = ISDN_CMD_ACCEPTB;
|
|
anymore = 1;
|
|
lp->dtimer = 0;
|
|
lp->dialstate++;
|
|
isdn_command(&cmd);
|
|
break;
|
|
case 6:
|
|
/* Wait for B- or D-Channel-connect. If timeout,
|
|
* switch back to state 3.
|
|
*/
|
|
#ifdef ISDN_DEBUG_NET_DIAL
|
|
printk(KERN_DEBUG "dialtimer2: %d\n", lp->dtimer);
|
|
#endif
|
|
if (lp->dtimer++ > ISDN_TIMER_DTIMEOUT10)
|
|
lp->dialstate = 3;
|
|
anymore = 1;
|
|
break;
|
|
case 7:
|
|
/* Got incoming Call, setup L2 and L3 protocols,
|
|
* then wait for D-Channel-connect
|
|
*/
|
|
#ifdef ISDN_DEBUG_NET_DIAL
|
|
printk(KERN_DEBUG "dialtimer4: %d\n", lp->dtimer);
|
|
#endif
|
|
cmd.driver = lp->isdn_device;
|
|
cmd.command = ISDN_CMD_SETL2;
|
|
cmd.arg = lp->isdn_channel + (lp->l2_proto << 8);
|
|
isdn_command(&cmd);
|
|
cmd.driver = lp->isdn_device;
|
|
cmd.command = ISDN_CMD_SETL3;
|
|
cmd.arg = lp->isdn_channel + (lp->l3_proto << 8);
|
|
isdn_command(&cmd);
|
|
if (lp->dtimer++ > ISDN_TIMER_DTIMEOUT15)
|
|
isdn_net_hangup(&p->dev);
|
|
else {
|
|
anymore = 1;
|
|
lp->dialstate++;
|
|
}
|
|
break;
|
|
case 9:
|
|
/* Got incoming D-Channel-Connect, send B-Channel-request */
|
|
cmd.driver = lp->isdn_device;
|
|
cmd.arg = lp->isdn_channel;
|
|
cmd.command = ISDN_CMD_ACCEPTB;
|
|
isdn_command(&cmd);
|
|
anymore = 1;
|
|
lp->dtimer = 0;
|
|
lp->dialstate++;
|
|
break;
|
|
case 8:
|
|
case 10:
|
|
/* Wait for B- or D-channel-connect */
|
|
#ifdef ISDN_DEBUG_NET_DIAL
|
|
printk(KERN_DEBUG "dialtimer4: %d\n", lp->dtimer);
|
|
#endif
|
|
if (lp->dtimer++ > ISDN_TIMER_DTIMEOUT10)
|
|
isdn_net_hangup(&p->dev);
|
|
else
|
|
anymore = 1;
|
|
break;
|
|
case 11:
|
|
/* Callback Delay */
|
|
if (lp->dtimer++ > lp->cbdelay)
|
|
lp->dialstate = 1;
|
|
anymore = 1;
|
|
break;
|
|
case 12:
|
|
/* Remote does callback. Hangup after cbdelay, then wait for incoming
|
|
* call (in state 4).
|
|
*/
|
|
if (lp->dtimer++ > lp->cbdelay)
|
|
{
|
|
printk(KERN_INFO "%s: hangup waiting for callback ...\n", lp->name);
|
|
lp->dtimer = 0;
|
|
lp->dialstate = 4;
|
|
cmd.driver = lp->isdn_device;
|
|
cmd.command = ISDN_CMD_HANGUP;
|
|
cmd.arg = lp->isdn_channel;
|
|
isdn_command(&cmd);
|
|
isdn_all_eaz(lp->isdn_device, lp->isdn_channel);
|
|
}
|
|
anymore = 1;
|
|
break;
|
|
default:
|
|
printk(KERN_WARNING "isdn_net: Illegal dialstate %d for device %s\n",
|
|
lp->dialstate, lp->name);
|
|
}
|
|
p = (isdn_net_dev *) p->next;
|
|
}
|
|
isdn_timer_ctrl(ISDN_TIMER_NETDIAL, anymore);
|
|
}
|
|
|
|
/*
|
|
* Perform hangup for a net-interface.
|
|
*/
|
|
void
|
|
isdn_net_hangup(struct device *d)
|
|
{
|
|
isdn_net_local *lp = (isdn_net_local *) d->priv;
|
|
isdn_ctrl cmd;
|
|
#ifdef CONFIG_ISDN_X25
|
|
struct concap_proto *cprot = lp -> netdev -> cprot;
|
|
struct concap_proto_ops *pops = cprot ? cprot -> pops : 0;
|
|
#endif
|
|
|
|
if (lp->flags & ISDN_NET_CONNECTED) {
|
|
printk(KERN_INFO "isdn_net: local hangup %s\n", lp->name);
|
|
#ifdef CONFIG_ISDN_PPP
|
|
isdn_ppp_free(lp);
|
|
#endif
|
|
#ifdef CONFIG_ISDN_X25
|
|
/* try if there are generic encap protocol
|
|
receiver routines and signal the closure of
|
|
the link */
|
|
if( pops && pops -> disconn_ind )
|
|
pops -> disconn_ind(cprot);
|
|
#endif /* CONFIG_ISDN_X25 */
|
|
|
|
cmd.driver = lp->isdn_device;
|
|
cmd.command = ISDN_CMD_HANGUP;
|
|
cmd.arg = lp->isdn_channel;
|
|
isdn_command(&cmd);
|
|
printk(KERN_INFO "%s: Chargesum is %d\n", lp->name, lp->charge);
|
|
isdn_all_eaz(lp->isdn_device, lp->isdn_channel);
|
|
}
|
|
isdn_net_unbind_channel(lp);
|
|
}
|
|
|
|
typedef struct {
|
|
unsigned short source;
|
|
unsigned short dest;
|
|
} ip_ports;
|
|
|
|
static void
|
|
isdn_net_log_skb(struct sk_buff * skb, isdn_net_local * lp)
|
|
{
|
|
u_char *p = skb->nh.raw; /* hopefully, this was set correctly */
|
|
unsigned short proto = ntohs(skb->protocol);
|
|
int data_ofs;
|
|
ip_ports *ipp;
|
|
char addinfo[100];
|
|
|
|
addinfo[0] = '\0';
|
|
/* This check stolen from 2.1.72 dev_queue_xmit_nit() */
|
|
if (skb->nh.raw < skb->data || skb->nh.raw >= skb->tail) {
|
|
/* fall back to old isdn_net_log_packet method() */
|
|
char * buf = skb->data;
|
|
|
|
printk(KERN_DEBUG "isdn_net: protocol %04x is buggy, dev %s\n", skb->protocol, lp->name);
|
|
p = buf;
|
|
proto = ETH_P_IP;
|
|
switch (lp->p_encap) {
|
|
case ISDN_NET_ENCAP_IPTYP:
|
|
proto = ntohs(*(unsigned short *) &buf[0]);
|
|
p = &buf[2];
|
|
break;
|
|
case ISDN_NET_ENCAP_ETHER:
|
|
proto = ntohs(*(unsigned short *) &buf[12]);
|
|
p = &buf[14];
|
|
break;
|
|
case ISDN_NET_ENCAP_CISCOHDLC:
|
|
proto = ntohs(*(unsigned short *) &buf[2]);
|
|
p = &buf[4];
|
|
break;
|
|
#ifdef CONFIG_ISDN_PPP
|
|
case ISDN_NET_ENCAP_SYNCPPP:
|
|
proto = ntohs(skb->protocol);
|
|
p = &buf[IPPP_MAX_HEADER];
|
|
break;
|
|
#endif
|
|
}
|
|
}
|
|
data_ofs = ((p[0] & 15) * 4);
|
|
switch (proto) {
|
|
case ETH_P_IP:
|
|
switch (p[9]) {
|
|
case 1:
|
|
strcpy(addinfo, " ICMP");
|
|
break;
|
|
case 2:
|
|
strcpy(addinfo, " IGMP");
|
|
break;
|
|
case 4:
|
|
strcpy(addinfo, " IPIP");
|
|
break;
|
|
case 6:
|
|
ipp = (ip_ports *) (&p[data_ofs]);
|
|
sprintf(addinfo, " TCP, port: %d -> %d", ntohs(ipp->source),
|
|
ntohs(ipp->dest));
|
|
break;
|
|
case 8:
|
|
strcpy(addinfo, " EGP");
|
|
break;
|
|
case 12:
|
|
strcpy(addinfo, " PUP");
|
|
break;
|
|
case 17:
|
|
ipp = (ip_ports *) (&p[data_ofs]);
|
|
sprintf(addinfo, " UDP, port: %d -> %d", ntohs(ipp->source),
|
|
ntohs(ipp->dest));
|
|
break;
|
|
case 22:
|
|
strcpy(addinfo, " IDP");
|
|
break;
|
|
}
|
|
printk(KERN_INFO "OPEN: %d.%d.%d.%d -> %d.%d.%d.%d%s\n",
|
|
p[12], p[13], p[14], p[15],
|
|
p[16], p[17], p[18], p[19],
|
|
addinfo);
|
|
break;
|
|
case ETH_P_ARP:
|
|
printk(KERN_INFO "OPEN: ARP %d.%d.%d.%d -> *.*.*.* ?%d.%d.%d.%d\n",
|
|
p[14], p[15], p[16], p[17],
|
|
p[24], p[25], p[26], p[27]);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Generic routine to send out an skbuf.
|
|
* If lowlevel-device does not support support skbufs, use
|
|
* standard send-routine, else send directly.
|
|
*
|
|
* Return: 0 on success, !0 on failure.
|
|
* Side-effects: ndev->tbusy is cleared on success.
|
|
*/
|
|
int
|
|
isdn_net_send_skb(struct device *ndev, isdn_net_local * lp,
|
|
struct sk_buff *skb)
|
|
{
|
|
int ret;
|
|
int len = skb->len; /* save len */
|
|
|
|
ret = isdn_writebuf_skb_stub(lp->isdn_device, lp->isdn_channel, 1, skb);
|
|
if (ret == len) {
|
|
lp->transcount += len;
|
|
clear_bit(0, (void *) &(ndev->tbusy));
|
|
return 0;
|
|
}
|
|
if (ret < 0) {
|
|
dev_kfree_skb(skb);
|
|
lp->stats.tx_errors++;
|
|
clear_bit(0, (void *) &(ndev->tbusy));
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Helper function for isdn_net_start_xmit.
|
|
* When called, the connection is already established.
|
|
* Based on cps-calculation, check if device is overloaded.
|
|
* If so, and if a slave exists, trigger dialing for it.
|
|
* If any slave is online, deliver packets using a simple round robin
|
|
* scheme.
|
|
*
|
|
* Return: 0 on success, !0 on failure.
|
|
*/
|
|
|
|
static int
|
|
isdn_net_xmit(struct device *ndev, isdn_net_local * lp, struct sk_buff *skb)
|
|
{
|
|
int ret;
|
|
|
|
#if CONFIG_ISDN_TIMEOUT_RULES
|
|
(void)isdn_net_recalc_timeout(ISDN_TIMRU_KEEPUP_OUT,
|
|
ISDN_TIMRU_PACKET_SKB, ndev, skb, 0);
|
|
#endif
|
|
|
|
/* For the other encaps the header has already been built */
|
|
#ifdef CONFIG_ISDN_PPP
|
|
if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP) {
|
|
return isdn_ppp_xmit(skb, ndev);
|
|
}
|
|
#endif
|
|
#ifndef CONFIG_ISDN_TIMEOUT_RULES
|
|
/* Reset hangup-timeout */
|
|
lp->huptimer = 0;
|
|
#endif
|
|
if (lp->cps > lp->triggercps) {
|
|
/* Device overloaded */
|
|
|
|
/*
|
|
* Packet-delivery via round-robin over master
|
|
* and all connected slaves.
|
|
*/
|
|
if (lp->master)
|
|
/* Slaves always deliver themselves */
|
|
ret = isdn_net_send_skb(ndev, lp, skb);
|
|
else {
|
|
isdn_net_local *slp = (isdn_net_local *) (lp->srobin->priv);
|
|
/* Master delivers via srobin and maintains srobin */
|
|
if (lp->srobin == ndev)
|
|
ret = isdn_net_send_skb(ndev, lp, skb);
|
|
else
|
|
ret = ndev->tbusy = isdn_net_start_xmit(skb, lp->srobin);
|
|
lp->srobin = (slp->slave) ? slp->slave : ndev;
|
|
slp = (isdn_net_local *) (lp->srobin->priv);
|
|
if (!((slp->flags & ISDN_NET_CONNECTED) && (slp->dialstate == 0)))
|
|
lp->srobin = ndev;
|
|
}
|
|
/* Slave-startup using delay-variable */
|
|
if (lp->slave) {
|
|
if (!lp->sqfull) {
|
|
/* First time overload: set timestamp only */
|
|
lp->sqfull = 1;
|
|
lp->sqfull_stamp = jiffies;
|
|
} else {
|
|
/* subsequent overload: if slavedelay exceeded, start dialing */
|
|
if ((jiffies - lp->sqfull_stamp) > lp->slavedelay)
|
|
isdn_net_force_dial_lp((isdn_net_local *) lp->slave->priv);
|
|
}
|
|
}
|
|
} else {
|
|
/* Not overloaded, deliver locally */
|
|
ret = isdn_net_send_skb(ndev, lp, skb);
|
|
if (lp->sqfull && ((jiffies - lp->sqfull_stamp) > (lp->slavedelay + (10 * HZ))))
|
|
lp->sqfull = 0;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
isdn_net_adjust_hdr(struct sk_buff *skb, struct device *dev)
|
|
{
|
|
isdn_net_local *lp = (isdn_net_local *) dev->priv;
|
|
if (!skb)
|
|
return;
|
|
if (lp->p_encap == ISDN_NET_ENCAP_ETHER) {
|
|
int pullsize = (ulong)skb->nh.raw - (ulong)skb->data - ETH_HLEN;
|
|
if (pullsize > 0) {
|
|
printk(KERN_DEBUG "isdn_net: Pull junk %d\n", pullsize);
|
|
skb_pull(skb, pullsize);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Try sending a packet.
|
|
* If this interface isn't connected to a ISDN-Channel, find a free channel,
|
|
* and start dialing.
|
|
*/
|
|
static int
|
|
isdn_net_start_xmit(struct sk_buff *skb, struct device *ndev)
|
|
{
|
|
isdn_net_local *lp = (isdn_net_local *) ndev->priv;
|
|
#ifdef CONFIG_ISDN_X25
|
|
struct concap_proto * cprot = lp -> netdev -> cprot;
|
|
#endif
|
|
|
|
if (ndev->tbusy) {
|
|
if (jiffies - ndev->trans_start < (2 * HZ))
|
|
return 1;
|
|
if (!lp->dialstate)
|
|
lp->stats.tx_errors++;
|
|
ndev->trans_start = jiffies;
|
|
}
|
|
ndev->tbusy = 1; /* left instead of obsolete test_and_set_bit() */
|
|
#ifdef CONFIG_ISDN_X25
|
|
/* At this point hard_start_xmit() passes control to the encapsulation
|
|
protocol (if present).
|
|
For X.25 auto-dialing is completly bypassed because:
|
|
- It does not conform with the semantics of a reliable datalink
|
|
service as needed by X.25 PLP.
|
|
- I don't want that the interface starts dialing when the network layer
|
|
sends a message which requests to disconnect the lapb link (or if it
|
|
sends any other message not resulting in data transmission).
|
|
Instead, dialing will be initiated by the encapsulation protocol entity
|
|
when a dl_establish request is received from the upper layer.
|
|
*/
|
|
if( cprot ) {
|
|
return cprot -> pops -> encap_and_xmit ( cprot , skb);
|
|
} else
|
|
#endif
|
|
/* auto-dialing xmit function */
|
|
{
|
|
#ifdef ISDN_DEBUG_NET_DUMP
|
|
u_char *buf;
|
|
#endif
|
|
isdn_net_adjust_hdr(skb, ndev);
|
|
#ifdef ISDN_DEBUG_NET_DUMP
|
|
buf = skb->data;
|
|
isdn_dumppkt("S:", buf, skb->len, 40);
|
|
#endif
|
|
if (!(lp->flags & ISDN_NET_CONNECTED)) {
|
|
int chi;
|
|
/* only do autodial if allowed by config */
|
|
if (!(ISDN_NET_DIALMODE(*lp) == ISDN_NET_DM_AUTO)) {
|
|
isdn_net_unreachable(ndev, skb, "dial rejected: interface not in dialmode `auto'");
|
|
dev_kfree_skb(skb);
|
|
ndev->tbusy = 0;
|
|
return 0;
|
|
}
|
|
if (lp->phone[1]) {
|
|
ulong flags;
|
|
save_flags(flags);
|
|
cli();
|
|
|
|
#ifdef CONFIG_ISDN_TIMEOUT_RULES
|
|
if(isdn_net_recalc_timeout(ISDN_TIMRU_BRINGUP,
|
|
ISDN_TIMRU_PACKET_SKB, ndev, skb, 0) <= 0) {
|
|
isdn_net_unreachable(ndev, skb, "dial rejected: packet may not bring up connection");
|
|
dev_kfree_skb(skb);
|
|
ndev->tbusy = 0;
|
|
restore_flags(flags);
|
|
return 0;
|
|
}
|
|
#endif
|
|
if(lp->dialwait_timer <= 0)
|
|
if(lp->dialstarted > 0 && lp->dialtimeout > 0 && jiffies < lp->dialstarted + lp->dialtimeout + lp->dialwait)
|
|
lp->dialwait_timer = lp->dialstarted + lp->dialtimeout + lp->dialwait;
|
|
|
|
if(lp->dialwait_timer > 0) {
|
|
if(jiffies < lp->dialwait_timer) {
|
|
isdn_net_unreachable(ndev, skb, "dial rejected: retry-time not reached");
|
|
dev_kfree_skb(skb);
|
|
ndev->tbusy = 0;
|
|
restore_flags(flags);
|
|
return 0;
|
|
} else
|
|
lp->dialwait_timer = 0;
|
|
}
|
|
|
|
/* Grab a free ISDN-Channel */
|
|
if (((chi =
|
|
isdn_get_free_channel(ISDN_USAGE_NET,
|
|
lp->l2_proto,
|
|
lp->l3_proto,
|
|
lp->pre_device,
|
|
lp->pre_channel)) < 0) &&
|
|
((chi =
|
|
isdn_get_free_channel(ISDN_USAGE_NET,
|
|
lp->l2_proto,
|
|
lp->l3_proto,
|
|
lp->pre_device,
|
|
lp->pre_channel^1)) < 0)) {
|
|
restore_flags(flags);
|
|
isdn_net_unreachable(ndev, skb,
|
|
"No channel");
|
|
dev_kfree_skb(skb);
|
|
ndev->tbusy = 0;
|
|
return 0;
|
|
}
|
|
/* Log packet, which triggered dialing */
|
|
if (dev->net_verbose)
|
|
isdn_net_log_skb(skb, lp);
|
|
lp->dialstate = 1;
|
|
/* Connect interface with channel */
|
|
isdn_net_bind_channel(lp, chi);
|
|
#ifdef CONFIG_ISDN_PPP
|
|
if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP) {
|
|
/* no 'first_skb' handling for syncPPP */
|
|
if (isdn_ppp_bind(lp) < 0) {
|
|
dev_kfree_skb(skb);
|
|
isdn_net_unbind_channel(lp);
|
|
restore_flags(flags);
|
|
return 0; /* STN (skb to nirvana) ;) */
|
|
}
|
|
restore_flags(flags);
|
|
isdn_net_dial(); /* Initiate dialing */
|
|
return 1; /* let upper layer requeue skb packet */
|
|
}
|
|
#endif
|
|
/* remember first skb to speed up arp
|
|
* when using encap ETHER
|
|
*/
|
|
if (lp->first_skb) {
|
|
printk(KERN_WARNING "isdn_net_start_xmit: First skb already set!\n");
|
|
dev_kfree_skb(lp->first_skb);
|
|
lp->first_skb = NULL;
|
|
}
|
|
lp->first_skb = skb;
|
|
/* Initiate dialing */
|
|
ndev->tbusy = 0;
|
|
restore_flags(flags);
|
|
isdn_net_dial();
|
|
return 0;
|
|
} else {
|
|
isdn_net_unreachable(ndev, skb,
|
|
"No phone number");
|
|
dev_kfree_skb(skb);
|
|
ndev->tbusy = 0;
|
|
return 0;
|
|
}
|
|
} else {
|
|
/* Connection is established, try sending */
|
|
ndev->trans_start = jiffies;
|
|
if (!lp->dialstate) {
|
|
if (lp->first_skb) {
|
|
if (isdn_net_xmit(ndev, lp, lp->first_skb))
|
|
return 1;
|
|
lp->first_skb = NULL;
|
|
}
|
|
return (isdn_net_xmit(ndev, lp, skb));
|
|
} else
|
|
ndev->tbusy = 1;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Shutdown a net-interface.
|
|
*/
|
|
static int
|
|
isdn_net_close(struct device *dev)
|
|
{
|
|
struct device *p;
|
|
#ifdef CONFIG_ISDN_X25
|
|
struct concap_proto * cprot =
|
|
( (isdn_net_local *) dev->priv ) -> netdev -> cprot;
|
|
/* printk(KERN_DEBUG "isdn_net_close %s\n" , dev-> name ); */
|
|
#endif
|
|
|
|
#ifdef CONFIG_ISDN_X25
|
|
if( cprot && cprot -> pops ) cprot -> pops -> close( cprot );
|
|
#endif
|
|
dev->tbusy = 1;
|
|
dev->start = 0;
|
|
if ((p = (((isdn_net_local *) dev->priv)->slave))) {
|
|
/* If this interface has slaves, stop them also */
|
|
while (p) {
|
|
#ifdef CONFIG_ISDN_X25
|
|
cprot = ( (isdn_net_local *) p->priv )
|
|
-> netdev -> cprot;
|
|
if( cprot && cprot -> pops )
|
|
cprot -> pops -> close( cprot );
|
|
#endif
|
|
isdn_net_hangup(p);
|
|
p->tbusy = 1;
|
|
p->start = 0;
|
|
p = (((isdn_net_local *) p->priv)->slave);
|
|
}
|
|
}
|
|
isdn_net_hangup(dev);
|
|
isdn_MOD_DEC_USE_COUNT();
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Get statistics
|
|
*/
|
|
static struct enet_statistics *
|
|
isdn_net_get_stats(struct device *dev)
|
|
{
|
|
isdn_net_local *lp = (isdn_net_local *) dev->priv;
|
|
return &lp->stats;
|
|
}
|
|
|
|
/* This is simply a copy from std. eth.c EXCEPT we pull ETH_HLEN
|
|
* instead of dev->hard_header_len off. This is done because the
|
|
* lowlevel-driver has already pulled off its stuff when we get
|
|
* here and this routine only gets called with p_encap == ETHER.
|
|
* Determine the packet's protocol ID. The rule here is that we
|
|
* assume 802.3 if the type field is short enough to be a length.
|
|
* This is normal practice and works for any 'now in use' protocol.
|
|
*/
|
|
|
|
static unsigned short
|
|
isdn_net_type_trans(struct sk_buff *skb, struct device *dev)
|
|
{
|
|
struct ethhdr *eth;
|
|
unsigned char *rawp;
|
|
|
|
skb->mac.raw = skb->data;
|
|
skb_pull(skb, ETH_HLEN);
|
|
eth = skb->mac.ethernet;
|
|
|
|
if (*eth->h_dest & 1) {
|
|
if (memcmp(eth->h_dest, dev->broadcast, ETH_ALEN) == 0)
|
|
skb->pkt_type = PACKET_BROADCAST;
|
|
else
|
|
skb->pkt_type = PACKET_MULTICAST;
|
|
}
|
|
/*
|
|
* This ALLMULTI check should be redundant by 1.4
|
|
* so don't forget to remove it.
|
|
*/
|
|
|
|
else if (dev->flags & (IFF_PROMISC /*| IFF_ALLMULTI*/)) {
|
|
if (memcmp(eth->h_dest, dev->dev_addr, ETH_ALEN))
|
|
skb->pkt_type = PACKET_OTHERHOST;
|
|
}
|
|
if (ntohs(eth->h_proto) >= 1536)
|
|
return eth->h_proto;
|
|
|
|
rawp = skb->data;
|
|
|
|
/*
|
|
* This is a magic hack to spot IPX packets. Older Novell breaks
|
|
* the protocol design and runs IPX over 802.3 without an 802.2 LLC
|
|
* layer. We look for FFFF which isn't a used 802.2 SSAP/DSAP. This
|
|
* won't work for fault tolerant netware but does for the rest.
|
|
*/
|
|
if (*(unsigned short *) rawp == 0xFFFF)
|
|
return htons(ETH_P_802_3);
|
|
/*
|
|
* Real 802.2 LLC
|
|
*/
|
|
return htons(ETH_P_802_2);
|
|
}
|
|
|
|
static void
|
|
isdn_net_slarp_send(isdn_net_local *lp, int is_reply)
|
|
{
|
|
unsigned short hl = dev->drv[lp->isdn_device]->interface->hl_hdrlen;
|
|
struct sk_buff *skb = dev_alloc_skb(hl + sizeof(cisco_hdr) + sizeof(cisco_slarp));
|
|
unsigned long t = (jiffies / HZ * 1000000);
|
|
int len;
|
|
cisco_hdr *ch;
|
|
cisco_slarp *s;
|
|
|
|
if (!skb) {
|
|
printk(KERN_WARNING
|
|
"%s: Could not allocate SLARP reply\n", lp->name);
|
|
return;
|
|
}
|
|
skb_reserve(skb, hl);
|
|
ch = (cisco_hdr *)skb_put(skb, sizeof(cisco_hdr));
|
|
ch->addr = CISCO_ADDR_UNICAST;
|
|
ch->ctrl = 0;
|
|
ch->type = htons(CISCO_TYPE_SLARP);
|
|
s = (cisco_slarp *)skb_put(skb, sizeof(cisco_slarp));
|
|
if (is_reply) {
|
|
s->code = htonl(CISCO_SLARP_REPLY);
|
|
memset(&s->slarp.reply.ifaddr, 0, sizeof(__u32));
|
|
memset(&s->slarp.reply.netmask, 0, sizeof(__u32));
|
|
} else {
|
|
lp->cisco_myseq++;
|
|
s->code = htonl(CISCO_SLARP_KEEPALIVE);
|
|
s->slarp.keepalive.my_seq = htonl(lp->cisco_myseq);
|
|
s->slarp.keepalive.your_seq = htonl(lp->cisco_yourseq);
|
|
}
|
|
s->rel = 0xffff;
|
|
s->t1 = t >> 16;
|
|
s->t0 = t & 0xffff;
|
|
len = skb->len;
|
|
if (isdn_writebuf_skb_stub(lp->isdn_device, lp->isdn_channel, 0, skb) != len)
|
|
dev_kfree_skb(skb);
|
|
}
|
|
|
|
static void
|
|
isdn_net_slarp_in(isdn_net_local *lp, struct sk_buff *skb)
|
|
{
|
|
cisco_slarp *s = (cisco_slarp *)skb->data;
|
|
|
|
switch (ntohl(s->code)) {
|
|
case CISCO_SLARP_REQUEST:
|
|
isdn_net_slarp_send(lp, 1);
|
|
break;
|
|
case CISCO_SLARP_REPLY:
|
|
/* Ignore replies */
|
|
break;
|
|
case CISCO_SLARP_KEEPALIVE:
|
|
lp->cisco_yourseq = s->slarp.keepalive.my_seq;
|
|
if (ntohl(s->slarp.keepalive.my_seq == lp->cisco_myseq)) {
|
|
if (lp->cisco_loop++ == 2) {
|
|
printk(KERN_WARNING "%s: Keepalive Loop\n",
|
|
lp->name);
|
|
lp->cisco_myseq ^= jiffies;
|
|
}
|
|
} else
|
|
lp->cisco_loop = 0;
|
|
break;
|
|
}
|
|
kfree_skb(skb);
|
|
}
|
|
|
|
/*
|
|
* Called every 10 sec. via timer-interrupt if
|
|
* any network-interface has Cisco-Keepalive-Encapsulation
|
|
* and is online.
|
|
* Send Keepalive-Packet and re-schedule.
|
|
*/
|
|
void
|
|
isdn_net_slarp_out(void)
|
|
{
|
|
isdn_net_dev *p = dev->netdev;
|
|
int anymore = 0;
|
|
|
|
while (p) {
|
|
isdn_net_local *l = p->local;
|
|
if ((l->p_encap == ISDN_NET_ENCAP_CISCOHDLCK) &&
|
|
(l->flags & ISDN_NET_CONNECTED) &&
|
|
(!l->dialstate) ) {
|
|
anymore = 1;
|
|
isdn_net_slarp_send(l, 0);
|
|
}
|
|
p = (isdn_net_dev *) p->next;
|
|
}
|
|
isdn_timer_ctrl(ISDN_TIMER_KEEPALIVE, anymore);
|
|
}
|
|
|
|
/*
|
|
* Got a packet from ISDN-Channel.
|
|
*/
|
|
static void
|
|
isdn_net_receive(struct device *ndev, struct sk_buff *skb)
|
|
{
|
|
isdn_net_local *lp = (isdn_net_local *) ndev->priv;
|
|
isdn_net_local *olp = lp; /* original 'lp' */
|
|
#ifdef CONFIG_ISDN_PPP
|
|
#ifndef CONFIG_ISDN_TIMEOUT_RULES
|
|
int proto = PPP_PROTOCOL(skb->data);
|
|
#endif
|
|
#endif
|
|
#ifdef CONFIG_ISDN_X25
|
|
struct concap_proto *cprot = lp -> netdev -> cprot;
|
|
#endif
|
|
cisco_hdr *ch;
|
|
|
|
lp->transcount += skb->len;
|
|
|
|
lp->stats.rx_packets++;
|
|
lp->stats.rx_bytes += skb->len;
|
|
if (lp->master) {
|
|
/* Bundling: If device is a slave-device, deliver to master, also
|
|
* handle master's statistics and hangup-timeout
|
|
*/
|
|
ndev = lp->master;
|
|
lp = (isdn_net_local *) ndev->priv;
|
|
lp->stats.rx_packets++;
|
|
lp->stats.rx_bytes += skb->len;
|
|
}
|
|
|
|
skb->dev = ndev;
|
|
skb->pkt_type = PACKET_HOST;
|
|
skb->mac.raw = skb->data;
|
|
#ifdef ISDN_DEBUG_NET_DUMP
|
|
isdn_dumppkt("R:", skb->data, skb->len, 40);
|
|
#endif
|
|
switch (lp->p_encap) {
|
|
case ISDN_NET_ENCAP_ETHER:
|
|
/* Ethernet over ISDN */
|
|
#ifndef CONFIG_ISDN_TIMEOUT_RULES
|
|
olp->huptimer = 0;
|
|
lp->huptimer = 0;
|
|
#endif
|
|
skb->protocol = isdn_net_type_trans(skb, ndev);
|
|
break;
|
|
case ISDN_NET_ENCAP_UIHDLC:
|
|
/* HDLC with UI-frame (for ispa with -h1 option) */
|
|
#ifndef CONFIG_ISDN_TIMEOUT_RULES
|
|
olp->huptimer = 0;
|
|
lp->huptimer = 0;
|
|
#endif
|
|
skb_pull(skb, 2);
|
|
/* Fall through */
|
|
case ISDN_NET_ENCAP_RAWIP:
|
|
/* RAW-IP without MAC-Header */
|
|
#ifndef CONFIG_ISDN_TIMEOUT_RULES
|
|
olp->huptimer = 0;
|
|
lp->huptimer = 0;
|
|
#endif
|
|
skb->protocol = htons(ETH_P_IP);
|
|
break;
|
|
case ISDN_NET_ENCAP_CISCOHDLCK:
|
|
ch = (cisco_hdr *)skb->data;
|
|
if ((ch->addr != CISCO_ADDR_UNICAST) &&
|
|
(ch->addr != CISCO_ADDR_BROADCAST) ) {
|
|
printk(KERN_WARNING "%s: Unknown Cisco addr 0x%02x\n",
|
|
lp->name, ch->addr);
|
|
kfree_skb(skb);
|
|
return;
|
|
}
|
|
if (ch->ctrl != 0) {
|
|
printk(KERN_WARNING "%s: Unknown Cisco ctrl 0x%02x\n",
|
|
lp->name, ch->ctrl);
|
|
kfree_skb(skb);
|
|
return;
|
|
}
|
|
switch (ntohs(ch->type)) {
|
|
case CISCO_TYPE_INET:
|
|
skb_pull(skb, 4);
|
|
skb->protocol = htons(ETH_P_IP);
|
|
break;
|
|
case CISCO_TYPE_SLARP:
|
|
skb_pull(skb, 4);
|
|
isdn_net_slarp_in(olp, skb);
|
|
return;
|
|
default:
|
|
printk(KERN_WARNING "%s: Unknown Cisco type 0x%04x\n",
|
|
lp->name, ch->type);
|
|
kfree_skb(skb);
|
|
return;
|
|
}
|
|
break;
|
|
case ISDN_NET_ENCAP_CISCOHDLC:
|
|
/* CISCO-HDLC IP with type field and fake I-frame-header */
|
|
skb_pull(skb, 2);
|
|
/* Fall through */
|
|
case ISDN_NET_ENCAP_IPTYP:
|
|
/* IP with type field */
|
|
#ifndef CONFIG_ISDN_TIMEOUT_RULES
|
|
olp->huptimer = 0;
|
|
lp->huptimer = 0;
|
|
#endif
|
|
skb->protocol = *(unsigned short *) &(skb->data[0]);
|
|
skb_pull(skb, 2);
|
|
if (*(unsigned short *) skb->data == 0xFFFF)
|
|
skb->protocol = htons(ETH_P_802_3);
|
|
break;
|
|
#ifdef CONFIG_ISDN_PPP
|
|
case ISDN_NET_ENCAP_SYNCPPP:
|
|
#ifndef CONFIG_ISDN_TIMEOUT_RULES
|
|
/*
|
|
* If encapsulation is syncppp, don't reset
|
|
* huptimer on LCP packets.
|
|
*/
|
|
if (proto != PPP_LCP) {
|
|
olp->huptimer = 0;
|
|
lp->huptimer = 0;
|
|
}
|
|
#endif
|
|
isdn_ppp_receive(lp->netdev, olp, skb);
|
|
return;
|
|
#endif
|
|
default:
|
|
#ifdef CONFIG_ISDN_X25
|
|
/* try if there are generic sync_device receiver routines */
|
|
if(cprot) if(cprot -> pops)
|
|
if( cprot -> pops -> data_ind){
|
|
cprot -> pops -> data_ind(cprot,skb);
|
|
return;
|
|
};
|
|
#endif /* CONFIG_ISDN_X25 */
|
|
printk(KERN_WARNING "%s: unknown encapsulation, dropping\n",
|
|
lp->name);
|
|
kfree_skb(skb);
|
|
return;
|
|
}
|
|
|
|
#ifdef CONFIG_ISDN_TIMEOUT_RULES
|
|
isdn_net_recalc_timeout(ISDN_TIMRU_KEEPUP_IN,
|
|
ISDN_TIMRU_PACKET_SKB, ndev, skb, 0);
|
|
/* FIXME: olp->huptimer = lp->huptimer ? */
|
|
#endif
|
|
|
|
netif_rx(skb);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* A packet arrived via ISDN. Search interface-chain for a corresponding
|
|
* interface. If found, deliver packet to receiver-function and return 1,
|
|
* else return 0.
|
|
*/
|
|
int
|
|
isdn_net_rcv_skb(int idx, struct sk_buff *skb)
|
|
{
|
|
isdn_net_dev *p = dev->rx_netdev[idx];
|
|
|
|
if (p) {
|
|
isdn_net_local *lp = p->local;
|
|
if ((lp->flags & ISDN_NET_CONNECTED) &&
|
|
(!lp->dialstate)) {
|
|
isdn_net_receive(&p->dev, skb);
|
|
return 1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
my_eth_header(struct sk_buff *skb, struct device *dev, unsigned short type,
|
|
void *daddr, void *saddr, unsigned len)
|
|
{
|
|
struct ethhdr *eth = (struct ethhdr *) skb_push(skb, ETH_HLEN);
|
|
|
|
/*
|
|
* Set the protocol type. For a packet of type ETH_P_802_3 we
|
|
* put the length here instead. It is up to the 802.2 layer to
|
|
* carry protocol information.
|
|
*/
|
|
|
|
if (type != ETH_P_802_3)
|
|
eth->h_proto = htons(type);
|
|
else
|
|
eth->h_proto = htons(len);
|
|
|
|
/*
|
|
* Set the source hardware address.
|
|
*/
|
|
if (saddr)
|
|
memcpy(eth->h_source, saddr, dev->addr_len);
|
|
else
|
|
memcpy(eth->h_source, dev->dev_addr, dev->addr_len);
|
|
|
|
/*
|
|
* Anyway, the loopback-device should never use this function...
|
|
*/
|
|
|
|
if (dev->flags & (IFF_LOOPBACK | IFF_NOARP)) {
|
|
memset(eth->h_dest, 0, dev->addr_len);
|
|
return ETH_HLEN /*(dev->hard_header_len)*/;
|
|
}
|
|
if (daddr) {
|
|
memcpy(eth->h_dest, daddr, dev->addr_len);
|
|
return ETH_HLEN /*dev->hard_header_len*/;
|
|
}
|
|
return -ETH_HLEN /*dev->hard_header_len*/;
|
|
}
|
|
|
|
/*
|
|
* build an header
|
|
* depends on encaps that is being used.
|
|
*/
|
|
|
|
static int
|
|
isdn_net_header(struct sk_buff *skb, struct device *dev, unsigned short type,
|
|
void *daddr, void *saddr, unsigned plen)
|
|
{
|
|
isdn_net_local *lp = dev->priv;
|
|
ushort len = 0;
|
|
|
|
switch (lp->p_encap) {
|
|
case ISDN_NET_ENCAP_ETHER:
|
|
len = my_eth_header(skb, dev, type, daddr, saddr, plen);
|
|
break;
|
|
#ifdef CONFIG_ISDN_PPP
|
|
case ISDN_NET_ENCAP_SYNCPPP:
|
|
/* stick on a fake header to keep fragmentation code happy. */
|
|
len = IPPP_MAX_HEADER;
|
|
skb_push(skb,len);
|
|
break;
|
|
#endif
|
|
case ISDN_NET_ENCAP_RAWIP:
|
|
printk(KERN_WARNING "isdn_net_header called with RAW_IP!\n");
|
|
len = 0;
|
|
break;
|
|
case ISDN_NET_ENCAP_IPTYP:
|
|
/* ethernet type field */
|
|
*((ushort *) skb_push(skb, 2)) = htons(type);
|
|
len = 2;
|
|
break;
|
|
case ISDN_NET_ENCAP_UIHDLC:
|
|
/* HDLC with UI-Frames (for ispa with -h1 option) */
|
|
*((ushort *) skb_push(skb, 2)) = htons(0x0103);
|
|
len = 2;
|
|
break;
|
|
case ISDN_NET_ENCAP_CISCOHDLC:
|
|
skb_push(skb, 4);
|
|
skb->data[0] = 0x0f;
|
|
skb->data[1] = 0x00;
|
|
*((ushort *) & skb->data[2]) = htons(type);
|
|
len = 4;
|
|
break;
|
|
#ifdef CONFIG_ISDN_X25
|
|
default:
|
|
/* try if there are generic concap protocol routines */
|
|
if( lp-> netdev -> cprot ){
|
|
printk(KERN_WARNING "isdn_net_header called with concap_proto!\n");
|
|
len = 0;
|
|
break;
|
|
}
|
|
break;
|
|
#endif /* CONFIG_ISDN_X25 */
|
|
}
|
|
return len;
|
|
}
|
|
|
|
/* We don't need to send arp, because we have point-to-point connections. */
|
|
static int
|
|
isdn_net_rebuild_header(struct sk_buff *skb)
|
|
{
|
|
struct device *dev = skb->dev;
|
|
isdn_net_local *lp = dev->priv;
|
|
int ret = 0;
|
|
|
|
if (lp->p_encap == ISDN_NET_ENCAP_ETHER) {
|
|
struct ethhdr *eth = (struct ethhdr *) skb->data;
|
|
|
|
/*
|
|
* Only ARP/IP is currently supported
|
|
*/
|
|
|
|
if (eth->h_proto != htons(ETH_P_IP)) {
|
|
printk(KERN_WARNING
|
|
"isdn_net: %s don't know how to resolve type %d addresses?\n",
|
|
dev->name, (int) eth->h_proto);
|
|
memcpy(eth->h_source, dev->dev_addr, dev->addr_len);
|
|
return 0;
|
|
}
|
|
/*
|
|
* Try to get ARP to resolve the header.
|
|
*/
|
|
#ifdef CONFIG_INET
|
|
ret = arp_find(eth->h_dest, skb);
|
|
#endif
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Interface-setup. (called just after registering a new interface)
|
|
*/
|
|
static int
|
|
isdn_net_init(struct device *ndev)
|
|
{
|
|
ushort max_hlhdr_len = 0;
|
|
isdn_net_local *lp = (isdn_net_local *) ndev->priv;
|
|
int drvidx,
|
|
i;
|
|
|
|
if (ndev == NULL) {
|
|
printk(KERN_WARNING "isdn_net_init: dev = NULL!\n");
|
|
return -ENODEV;
|
|
}
|
|
if (ndev->priv == NULL) {
|
|
printk(KERN_WARNING "isdn_net_init: dev->priv = NULL!\n");
|
|
return -ENODEV;
|
|
}
|
|
ether_setup(ndev);
|
|
lp->org_hhc = ndev->hard_header_cache;
|
|
lp->org_hcu = ndev->header_cache_update;
|
|
|
|
/* Setup the generic properties */
|
|
|
|
ndev->hard_header = NULL;
|
|
ndev->hard_header_cache = NULL;
|
|
ndev->header_cache_update = NULL;
|
|
ndev->mtu = 1500;
|
|
ndev->flags = IFF_NOARP|IFF_POINTOPOINT;
|
|
ndev->type = ARPHRD_ETHER;
|
|
ndev->addr_len = ETH_ALEN;
|
|
|
|
/* for clients with MPPP maybe higher values better */
|
|
ndev->tx_queue_len = 30;
|
|
|
|
for (i = 0; i < ETH_ALEN; i++)
|
|
ndev->broadcast[i] = 0xff;
|
|
|
|
/* The ISDN-specific entries in the device structure. */
|
|
ndev->open = &isdn_net_open;
|
|
ndev->hard_start_xmit = &isdn_net_start_xmit;
|
|
|
|
/*
|
|
* up till binding we ask the protocol layer to reserve as much
|
|
* as we might need for HL layer
|
|
*/
|
|
|
|
for (drvidx = 0; drvidx < ISDN_MAX_DRIVERS; drvidx++)
|
|
if (dev->drv[drvidx])
|
|
if (max_hlhdr_len < dev->drv[drvidx]->interface->hl_hdrlen)
|
|
max_hlhdr_len = dev->drv[drvidx]->interface->hl_hdrlen;
|
|
|
|
ndev->hard_header_len = ETH_HLEN + max_hlhdr_len;
|
|
ndev->stop = &isdn_net_close;
|
|
ndev->get_stats = &isdn_net_get_stats;
|
|
ndev->rebuild_header = &isdn_net_rebuild_header;
|
|
#ifdef CONFIG_ISDN_PPP
|
|
ndev->do_ioctl = isdn_ppp_dev_ioctl;
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
isdn_net_swapbind(int drvidx)
|
|
{
|
|
isdn_net_dev *p;
|
|
|
|
#ifdef ISDN_DEBUG_NET_ICALL
|
|
printk(KERN_DEBUG "n_fi: swapping ch of %d\n", drvidx);
|
|
#endif
|
|
p = dev->netdev;
|
|
while (p) {
|
|
if (p->local->pre_device == drvidx)
|
|
switch (p->local->pre_channel) {
|
|
case 0:
|
|
p->local->pre_channel = 1;
|
|
break;
|
|
case 1:
|
|
p->local->pre_channel = 0;
|
|
break;
|
|
}
|
|
p = (isdn_net_dev *) p->next;
|
|
}
|
|
}
|
|
|
|
static void
|
|
isdn_net_swap_usage(int i1, int i2)
|
|
{
|
|
int u1 = dev->usage[i1] & ISDN_USAGE_EXCLUSIVE;
|
|
int u2 = dev->usage[i2] & ISDN_USAGE_EXCLUSIVE;
|
|
|
|
#ifdef ISDN_DEBUG_NET_ICALL
|
|
printk(KERN_DEBUG "n_fi: usage of %d and %d\n", i1, i2);
|
|
#endif
|
|
dev->usage[i1] &= ~ISDN_USAGE_EXCLUSIVE;
|
|
dev->usage[i1] |= u2;
|
|
dev->usage[i2] &= ~ISDN_USAGE_EXCLUSIVE;
|
|
dev->usage[i2] |= u1;
|
|
isdn_info_update();
|
|
}
|
|
|
|
/*
|
|
* An incoming call-request has arrived.
|
|
* Search the interface-chain for an appropriate interface.
|
|
* If found, connect the interface to the ISDN-channel and initiate
|
|
* D- and B-Channel-setup. If secure-flag is set, accept only
|
|
* configured phone-numbers. If callback-flag is set, initiate
|
|
* callback-dialing.
|
|
*
|
|
* Return-Value: 0 = No appropriate interface for this call.
|
|
* 1 = Call accepted
|
|
* 2 = Reject call, wait cbdelay, then call back
|
|
* 3 = Reject call
|
|
* 4 = Wait cbdelay, then call back
|
|
* 5 = No appropriate interface for this call,
|
|
* would eventually match if CID was longer.
|
|
*/
|
|
int
|
|
isdn_net_find_icall(int di, int ch, int idx, setup_parm setup)
|
|
{
|
|
char *eaz;
|
|
int si1;
|
|
int si2;
|
|
int ematch;
|
|
int wret;
|
|
int swapped;
|
|
int sidx = 0;
|
|
isdn_net_dev *p;
|
|
isdn_net_phone *n;
|
|
ulong flags;
|
|
char nr[32];
|
|
|
|
/* Search name in netdev-chain */
|
|
save_flags(flags);
|
|
cli();
|
|
if (!setup.phone[0]) {
|
|
nr[0] = '0';
|
|
nr[1] = '\0';
|
|
printk(KERN_INFO "isdn_net: Incoming call without OAD, assuming '0'\n");
|
|
} else
|
|
strcpy(nr, setup.phone);
|
|
si1 = (int) setup.si1;
|
|
si2 = (int) setup.si2;
|
|
if (!setup.eazmsn[0]) {
|
|
printk(KERN_WARNING "isdn_net: Incoming call without CPN, assuming '0'\n");
|
|
eaz = "0";
|
|
} else
|
|
eaz = setup.eazmsn;
|
|
if (dev->net_verbose > 1)
|
|
printk(KERN_INFO "isdn_net: call from %s,%d,%d -> %s\n", nr, si1, si2, eaz);
|
|
/* Accept only calls with Si1 = 7 (Data-Transmission) */
|
|
if (si1 != 7) {
|
|
restore_flags(flags);
|
|
if (dev->net_verbose > 1)
|
|
printk(KERN_INFO "isdn_net: Service-Indicator not 7, ignored\n");
|
|
return 0;
|
|
}
|
|
n = (isdn_net_phone *) 0;
|
|
p = dev->netdev;
|
|
ematch = wret = swapped = 0;
|
|
#ifdef ISDN_DEBUG_NET_ICALL
|
|
printk(KERN_DEBUG "n_fi: di=%d ch=%d idx=%d usg=%d\n", di, ch, idx,
|
|
dev->usage[idx]);
|
|
#endif
|
|
while (p) {
|
|
int matchret;
|
|
isdn_net_local *lp = p->local;
|
|
|
|
/* If last check has triggered as binding-swap, revert it */
|
|
switch (swapped) {
|
|
case 2:
|
|
isdn_net_swap_usage(idx, sidx);
|
|
/* fall through */
|
|
case 1:
|
|
isdn_net_swapbind(di);
|
|
break;
|
|
}
|
|
swapped = 0;
|
|
if (!(matchret = isdn_wildmat(eaz, isdn_map_eaz2msn(lp->msn, di))))
|
|
ematch = 1;
|
|
/* Remember if more numbers eventually can match */
|
|
if (matchret > wret)
|
|
wret = matchret;
|
|
#ifdef ISDN_DEBUG_NET_ICALL
|
|
printk(KERN_DEBUG "n_fi: if='%s', l.msn=%s, l.flags=%d, l.dstate=%d\n",
|
|
lp->name, lp->msn, lp->flags, lp->dialstate);
|
|
#endif
|
|
if ((!matchret) && /* EAZ is matching */
|
|
(((!(lp->flags & ISDN_NET_CONNECTED)) && /* but not connected */
|
|
(USG_NONE(dev->usage[idx]))) || /* and ch. unused or */
|
|
((((lp->dialstate == 4) || (lp->dialstate == 12)) && /* if dialing */
|
|
(!(lp->flags & ISDN_NET_CALLBACK))) /* but no callback */
|
|
)))
|
|
{
|
|
#ifdef ISDN_DEBUG_NET_ICALL
|
|
printk(KERN_DEBUG "n_fi: match1, pdev=%d pch=%d\n",
|
|
lp->pre_device, lp->pre_channel);
|
|
#endif
|
|
if (dev->usage[idx] & ISDN_USAGE_EXCLUSIVE) {
|
|
if ((lp->pre_channel != ch) ||
|
|
(lp->pre_device != di)) {
|
|
/* Here we got a problem:
|
|
* If using an ICN-Card, an incoming call is always signaled on
|
|
* on the first channel of the card, if both channels are
|
|
* down. However this channel may be bound exclusive. If the
|
|
* second channel is free, this call should be accepted.
|
|
* The solution is horribly but it runs, so what:
|
|
* We exchange the exclusive bindings of the two channels, the
|
|
* corresponding variables in the interface-structs.
|
|
*/
|
|
if (ch == 0) {
|
|
sidx = isdn_dc2minor(di, 1);
|
|
#ifdef ISDN_DEBUG_NET_ICALL
|
|
printk(KERN_DEBUG "n_fi: ch is 0\n");
|
|
#endif
|
|
if (USG_NONE(dev->usage[sidx])) {
|
|
/* Second Channel is free, now see if it is bound
|
|
* exclusive too. */
|
|
if (dev->usage[sidx] & ISDN_USAGE_EXCLUSIVE) {
|
|
#ifdef ISDN_DEBUG_NET_ICALL
|
|
printk(KERN_DEBUG "n_fi: 2nd channel is down and bound\n");
|
|
#endif
|
|
/* Yes, swap bindings only, if the original
|
|
* binding is bound to channel 1 of this driver */
|
|
if ((lp->pre_device == di) &&
|
|
(lp->pre_channel == 1)) {
|
|
isdn_net_swapbind(di);
|
|
swapped = 1;
|
|
} else {
|
|
/* ... else iterate next device */
|
|
p = (isdn_net_dev *) p->next;
|
|
continue;
|
|
}
|
|
} else {
|
|
#ifdef ISDN_DEBUG_NET_ICALL
|
|
printk(KERN_DEBUG "n_fi: 2nd channel is down and unbound\n");
|
|
#endif
|
|
/* No, swap always and swap excl-usage also */
|
|
isdn_net_swap_usage(idx, sidx);
|
|
isdn_net_swapbind(di);
|
|
swapped = 2;
|
|
}
|
|
/* Now check for exclusive binding again */
|
|
#ifdef ISDN_DEBUG_NET_ICALL
|
|
printk(KERN_DEBUG "n_fi: final check\n");
|
|
#endif
|
|
if ((dev->usage[idx] & ISDN_USAGE_EXCLUSIVE) &&
|
|
((lp->pre_channel != ch) ||
|
|
(lp->pre_device != di))) {
|
|
#ifdef ISDN_DEBUG_NET_ICALL
|
|
printk(KERN_DEBUG "n_fi: final check failed\n");
|
|
#endif
|
|
p = (isdn_net_dev *) p->next;
|
|
continue;
|
|
}
|
|
}
|
|
} else {
|
|
/* We are already on the second channel, so nothing to do */
|
|
#ifdef ISDN_DEBUG_NET_ICALL
|
|
printk(KERN_DEBUG "n_fi: already on 2nd channel\n");
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
#ifdef ISDN_DEBUG_NET_ICALL
|
|
printk(KERN_DEBUG "n_fi: match2\n");
|
|
#endif
|
|
n = lp->phone[0];
|
|
if (lp->flags & ISDN_NET_SECURE) {
|
|
while (n) {
|
|
if (!isdn_wildmat(nr, n->num))
|
|
break;
|
|
n = (isdn_net_phone *) n->next;
|
|
}
|
|
}
|
|
if (n || (!(lp->flags & ISDN_NET_SECURE))) {
|
|
#ifdef ISDN_DEBUG_NET_ICALL
|
|
printk(KERN_DEBUG "n_fi: match3\n");
|
|
#endif
|
|
/* matching interface found */
|
|
|
|
/*
|
|
* Is the state STOPPED?
|
|
* If so, no dialin is allowed,
|
|
* so reject actively.
|
|
* */
|
|
if (ISDN_NET_DIALMODE(*lp) == ISDN_NET_DM_OFF) {
|
|
restore_flags(flags);
|
|
printk(KERN_INFO "incoming call, interface %s `stopped' -> rejected\n",
|
|
lp->name);
|
|
return 3;
|
|
}
|
|
/*
|
|
* Is the interface up?
|
|
* If not, reject the call actively.
|
|
*/
|
|
if (!p->dev.start) {
|
|
restore_flags(flags);
|
|
printk(KERN_INFO "%s: incoming call, interface down -> rejected\n",
|
|
lp->name);
|
|
return 3;
|
|
}
|
|
/* Interface is up, now see if it's a slave. If so, see if
|
|
* it's master and parent slave is online. If not, reject the call.
|
|
*/
|
|
if (lp->master) {
|
|
isdn_net_local *mlp = (isdn_net_local *) lp->master->priv;
|
|
printk(KERN_DEBUG "ICALLslv: %s\n", lp->name);
|
|
printk(KERN_DEBUG "master=%s\n", mlp->name);
|
|
if (mlp->flags & ISDN_NET_CONNECTED) {
|
|
printk(KERN_DEBUG "master online\n");
|
|
/* Master is online, find parent-slave (master if first slave) */
|
|
while (mlp->slave) {
|
|
if ((isdn_net_local *) mlp->slave->priv == lp)
|
|
break;
|
|
mlp = (isdn_net_local *) mlp->slave->priv;
|
|
}
|
|
} else
|
|
printk(KERN_DEBUG "master offline\n");
|
|
/* Found parent, if it's offline iterate next device */
|
|
printk(KERN_DEBUG "mlpf: %d\n", mlp->flags & ISDN_NET_CONNECTED);
|
|
if (!(mlp->flags & ISDN_NET_CONNECTED)) {
|
|
p = (isdn_net_dev *) p->next;
|
|
continue;
|
|
}
|
|
}
|
|
if (lp->flags & ISDN_NET_CALLBACK) {
|
|
int chi;
|
|
/*
|
|
* Is the state MANUAL?
|
|
* If so, no callback can be made,
|
|
* so reject actively.
|
|
* */
|
|
if (ISDN_NET_DIALMODE(*lp) == ISDN_NET_DM_OFF) {
|
|
restore_flags(flags);
|
|
printk(KERN_INFO "incoming call for callback, interface %s `off' -> rejected\n",
|
|
lp->name);
|
|
return 3;
|
|
}
|
|
printk(KERN_DEBUG "%s: call from %s -> %s, start callback\n",
|
|
lp->name, nr, eaz);
|
|
if (lp->phone[1]) {
|
|
/* Grab a free ISDN-Channel */
|
|
if ((chi = isdn_get_free_channel(ISDN_USAGE_NET, lp->l2_proto,
|
|
lp->l3_proto,
|
|
lp->pre_device,
|
|
lp->pre_channel)) < 0) {
|
|
printk(KERN_WARNING "isdn_net_find_icall: No channel for %s\n", lp->name);
|
|
restore_flags(flags);
|
|
return 0;
|
|
}
|
|
/* Setup dialstate. */
|
|
lp->dtimer = 0;
|
|
lp->dialstate = 11;
|
|
/* Connect interface with channel */
|
|
isdn_net_bind_channel(lp, chi);
|
|
#ifdef CONFIG_ISDN_PPP
|
|
if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP)
|
|
if (isdn_ppp_bind(lp) < 0) {
|
|
isdn_net_unbind_channel(lp);
|
|
restore_flags(flags);
|
|
return 0;
|
|
}
|
|
#endif
|
|
/* Initiate dialing by returning 2 or 4 */
|
|
restore_flags(flags);
|
|
return (lp->flags & ISDN_NET_CBHUP) ? 2 : 4;
|
|
} else
|
|
printk(KERN_WARNING "isdn_net: %s: No phone number\n", lp->name);
|
|
restore_flags(flags);
|
|
return 0;
|
|
} else {
|
|
printk(KERN_DEBUG "%s: call from %s -> %s accepted\n", lp->name, nr,
|
|
eaz);
|
|
/* if this interface is dialing, it does it probably on a different
|
|
device, so free this device */
|
|
if ((lp->dialstate == 4) || (lp->dialstate == 12)) {
|
|
#ifdef CONFIG_ISDN_PPP
|
|
if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP)
|
|
isdn_ppp_free(lp);
|
|
#endif
|
|
isdn_free_channel(lp->isdn_device, lp->isdn_channel,
|
|
ISDN_USAGE_NET);
|
|
}
|
|
dev->usage[idx] &= ISDN_USAGE_EXCLUSIVE;
|
|
dev->usage[idx] |= ISDN_USAGE_NET;
|
|
strcpy(dev->num[idx], nr);
|
|
isdn_info_update();
|
|
dev->st_netdev[idx] = lp->netdev;
|
|
lp->isdn_device = di;
|
|
lp->isdn_channel = ch;
|
|
lp->ppp_slot = -1;
|
|
lp->flags |= ISDN_NET_CONNECTED;
|
|
lp->dialstate = 7;
|
|
lp->dtimer = 0;
|
|
lp->outgoing = 0;
|
|
lp->huptimer = 0;
|
|
lp->hupflags |= ISDN_WAITCHARGE;
|
|
lp->hupflags &= ~ISDN_HAVECHARGE;
|
|
#ifdef CONFIG_ISDN_PPP
|
|
if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP)
|
|
if (isdn_ppp_bind(lp) < 0) {
|
|
isdn_net_unbind_channel(lp);
|
|
restore_flags(flags);
|
|
return 0;
|
|
}
|
|
#endif
|
|
restore_flags(flags);
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
p = (isdn_net_dev *) p->next;
|
|
}
|
|
/* If none of configured EAZ/MSN matched and not verbose, be silent */
|
|
if (!ematch || dev->net_verbose)
|
|
printk(KERN_INFO "isdn_net: call from %s -> %d %s ignored\n", nr, di, eaz);
|
|
restore_flags(flags);
|
|
return (wret == 2)?5:0;
|
|
}
|
|
|
|
/*
|
|
* Search list of net-interfaces for an interface with given name.
|
|
*/
|
|
isdn_net_dev *
|
|
isdn_net_findif(char *name)
|
|
{
|
|
isdn_net_dev *p = dev->netdev;
|
|
|
|
while (p) {
|
|
if (!strcmp(p->local->name, name))
|
|
return p;
|
|
p = (isdn_net_dev *) p->next;
|
|
}
|
|
return (isdn_net_dev *) NULL;
|
|
}
|
|
|
|
/*
|
|
* Force a net-interface to dial out.
|
|
* This is called from the userlevel-routine below or
|
|
* from isdn_net_start_xmit().
|
|
*/
|
|
int
|
|
isdn_net_force_dial_lp(isdn_net_local * lp)
|
|
{
|
|
if ((!(lp->flags & ISDN_NET_CONNECTED)) && !lp->dialstate) {
|
|
int chi;
|
|
if (lp->phone[1]) {
|
|
ulong flags;
|
|
save_flags(flags);
|
|
cli();
|
|
|
|
/* Grab a free ISDN-Channel */
|
|
if ((chi = isdn_get_free_channel(ISDN_USAGE_NET, lp->l2_proto,
|
|
lp->l3_proto,
|
|
lp->pre_device,
|
|
lp->pre_channel)) < 0) {
|
|
printk(KERN_WARNING "isdn_net_force_dial: No channel for %s\n", lp->name);
|
|
restore_flags(flags);
|
|
return -EAGAIN;
|
|
}
|
|
lp->dialstate = 1;
|
|
/* Connect interface with channel */
|
|
isdn_net_bind_channel(lp, chi);
|
|
#ifdef CONFIG_ISDN_PPP
|
|
if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP)
|
|
if (isdn_ppp_bind(lp) < 0) {
|
|
isdn_net_unbind_channel(lp);
|
|
restore_flags(flags);
|
|
return -EAGAIN;
|
|
}
|
|
#endif
|
|
/* Initiate dialing */
|
|
restore_flags(flags);
|
|
isdn_net_dial();
|
|
return 0;
|
|
} else
|
|
return -EINVAL;
|
|
} else
|
|
return -EBUSY;
|
|
}
|
|
|
|
/*
|
|
* This is called from certain upper protocol layers (multilink ppp
|
|
* and x25iface encapsulation module) that want to initiate dialing
|
|
* themselves.
|
|
*/
|
|
int
|
|
isdn_net_dial_req(isdn_net_local * lp)
|
|
{
|
|
/* is there a better error code? */
|
|
if (!(ISDN_NET_DIALMODE(*lp) == ISDN_NET_DM_AUTO)) return -EBUSY;
|
|
|
|
return isdn_net_force_dial_lp(lp);
|
|
}
|
|
|
|
/*
|
|
* Force a net-interface to dial out.
|
|
* This is always called from within userspace (ISDN_IOCTL_NET_DIAL).
|
|
*/
|
|
int
|
|
isdn_net_force_dial(char *name)
|
|
{
|
|
isdn_net_dev *p = isdn_net_findif(name);
|
|
|
|
if (!p)
|
|
return -ENODEV;
|
|
return (isdn_net_force_dial_lp(p->local));
|
|
}
|
|
|
|
/*
|
|
* Allocate a new network-interface and initialize its data structures.
|
|
*/
|
|
char *
|
|
isdn_net_new(char *name, struct device *master)
|
|
{
|
|
isdn_net_dev *netdev;
|
|
|
|
/* Avoid creating an existing interface */
|
|
if (isdn_net_findif(name)) {
|
|
printk(KERN_WARNING "isdn_net: interface %s already exists\n", name);
|
|
return NULL;
|
|
}
|
|
if (!(netdev = (isdn_net_dev *) kmalloc(sizeof(isdn_net_dev), GFP_KERNEL))) {
|
|
printk(KERN_WARNING "isdn_net: Could not allocate net-device\n");
|
|
return NULL;
|
|
}
|
|
memset(netdev, 0, sizeof(isdn_net_dev));
|
|
if (!(netdev->local = (isdn_net_local *) kmalloc(sizeof(isdn_net_local), GFP_KERNEL))) {
|
|
printk(KERN_WARNING "isdn_net: Could not allocate device locals\n");
|
|
return NULL;
|
|
}
|
|
memset(netdev->local, 0, sizeof(isdn_net_local));
|
|
if (name == NULL)
|
|
strcpy(netdev->local->name, " ");
|
|
else
|
|
strcpy(netdev->local->name, name);
|
|
netdev->dev.name = netdev->local->name;
|
|
netdev->dev.priv = netdev->local;
|
|
netdev->dev.init = isdn_net_init;
|
|
netdev->local->p_encap = ISDN_NET_ENCAP_RAWIP;
|
|
if (master) {
|
|
/* Device shall be a slave */
|
|
struct device *p = (((isdn_net_local *) master->priv)->slave);
|
|
struct device *q = master;
|
|
|
|
netdev->local->master = master;
|
|
/* Put device at end of slave-chain */
|
|
while (p) {
|
|
q = p;
|
|
p = (((isdn_net_local *) p->priv)->slave);
|
|
}
|
|
((isdn_net_local *) q->priv)->slave = &(netdev->dev);
|
|
q->interrupt = 0;
|
|
q->tbusy = 0;
|
|
q->start = master->start;
|
|
} else {
|
|
/* Device shall be a master */
|
|
if (register_netdev(&netdev->dev) != 0) {
|
|
printk(KERN_WARNING "isdn_net: Could not register net-device\n");
|
|
kfree(netdev->local);
|
|
kfree(netdev);
|
|
return NULL;
|
|
}
|
|
}
|
|
netdev->local->magic = ISDN_NET_MAGIC;
|
|
|
|
#ifdef CONFIG_ISDN_PPP
|
|
netdev->mp_last = NULL; /* mpqueue is empty */
|
|
netdev->ib.next_num = 0;
|
|
netdev->ib.last = NULL;
|
|
#endif
|
|
netdev->queue = netdev->local;
|
|
netdev->local->last = netdev->local;
|
|
netdev->local->netdev = netdev;
|
|
netdev->local->next = netdev->local;
|
|
|
|
netdev->local->isdn_device = -1;
|
|
netdev->local->isdn_channel = -1;
|
|
netdev->local->pre_device = -1;
|
|
netdev->local->pre_channel = -1;
|
|
netdev->local->exclusive = -1;
|
|
netdev->local->ppp_slot = -1;
|
|
netdev->local->pppbind = -1;
|
|
netdev->local->sav_skb = NULL;
|
|
netdev->local->first_skb = NULL;
|
|
netdev->local->l2_proto = ISDN_PROTO_L2_X75I;
|
|
netdev->local->l3_proto = ISDN_PROTO_L3_TRANS;
|
|
netdev->local->triggercps = 6000;
|
|
netdev->local->slavedelay = 10 * HZ;
|
|
netdev->local->srobin = &netdev->dev;
|
|
netdev->local->hupflags = ISDN_INHUP; /* Do hangup even on incoming calls */
|
|
netdev->local->onhtime = 10; /* Default hangup-time for saving costs
|
|
of those who forget configuring this */
|
|
netdev->local->dialmax = 1;
|
|
netdev->local->flags = ISDN_NET_CBHUP | ISDN_NET_DM_MANUAL; /* Hangup before Callback, manual dial */
|
|
netdev->local->cbdelay = 25; /* Wait 5 secs before Callback */
|
|
netdev->local->dialtimeout = -1; /* Infinite Dial-Timeout */
|
|
netdev->local->dialwait = 5 * HZ; /* Wait 5 sec. after failed dial */
|
|
netdev->local->dialstarted = 0; /* Jiffies of last dial-start */
|
|
netdev->local->dialwait_timer = 0; /* Jiffies of earliest next dial-start */
|
|
|
|
#ifdef CONFIG_ISDN_TIMEOUT_RULES
|
|
netdev->local->timeout_rules = NULL;
|
|
#endif
|
|
|
|
#ifdef CONFIG_ISDN_BUDGET
|
|
(void)isdn_net_budget(ISDN_BUDGET_INIT, &netdev->dev);
|
|
#endif
|
|
|
|
/* Put into to netdev-chain */
|
|
netdev->next = (void *) dev->netdev;
|
|
dev->netdev = netdev;
|
|
return netdev->dev.name;
|
|
}
|
|
|
|
char *
|
|
isdn_net_newslave(char *parm)
|
|
{
|
|
char *p = strchr(parm, ',');
|
|
isdn_net_dev *n;
|
|
char newname[10];
|
|
|
|
if (p) {
|
|
/* Slave-Name MUST not be empty */
|
|
if (!strlen(p + 1))
|
|
return NULL;
|
|
strcpy(newname, p + 1);
|
|
*p = 0;
|
|
/* Master must already exist */
|
|
if (!(n = isdn_net_findif(parm)))
|
|
return NULL;
|
|
/* Master must be a real interface, not a slave */
|
|
if (n->local->master)
|
|
return NULL;
|
|
/* Master must not be started yet */
|
|
if (n->dev.start)
|
|
return NULL;
|
|
return (isdn_net_new(newname, &(n->dev)));
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* Set interface-parameters.
|
|
* Always set all parameters, so the user-level application is responsible
|
|
* for not overwriting existing setups. It has to get the current
|
|
* setup first, if only selected parameters are to be changed.
|
|
*/
|
|
int
|
|
isdn_net_setcfg(isdn_net_ioctl_cfg * cfg)
|
|
{
|
|
isdn_net_dev *p = isdn_net_findif(cfg->name);
|
|
ulong features;
|
|
int i;
|
|
int drvidx;
|
|
int chidx;
|
|
char drvid[25];
|
|
#ifdef CONFIG_ISDN_X25
|
|
ulong flags;
|
|
#endif
|
|
if (p) {
|
|
isdn_net_local *lp = p->local;
|
|
|
|
/* See if any registered driver supports the features we want */
|
|
features = ((1 << cfg->l2_proto) << ISDN_FEATURE_L2_SHIFT) |
|
|
((1 << cfg->l3_proto) << ISDN_FEATURE_L3_SHIFT);
|
|
for (i = 0; i < ISDN_MAX_DRIVERS; i++)
|
|
if (dev->drv[i])
|
|
if ((dev->drv[i]->interface->features & features) == features)
|
|
break;
|
|
if (i == ISDN_MAX_DRIVERS) {
|
|
printk(KERN_WARNING "isdn_net: No driver with selected features\n");
|
|
return -ENODEV;
|
|
}
|
|
if (lp->p_encap != cfg->p_encap){
|
|
#ifdef CONFIG_ISDN_X25
|
|
struct concap_proto * cprot = p -> cprot;
|
|
#endif
|
|
if (p->dev.start) {
|
|
printk(KERN_WARNING
|
|
"%s: cannot change encap when if is up\n",
|
|
lp->name);
|
|
return -EBUSY;
|
|
}
|
|
#ifdef CONFIG_ISDN_X25
|
|
/* delete old encapsulation protocol if present ... */
|
|
save_flags(flags);
|
|
cli(); /* avoid races with incoming events trying to
|
|
call cprot->pops methods */
|
|
if( cprot && cprot -> pops )
|
|
cprot -> pops -> proto_del ( cprot );
|
|
p -> cprot = NULL;
|
|
lp -> dops = NULL;
|
|
restore_flags(flags);
|
|
/* ... , prepare for configuration of new one ... */
|
|
switch ( cfg -> p_encap ){
|
|
case ISDN_NET_ENCAP_X25IFACE:
|
|
lp -> dops = &isdn_concap_reliable_dl_dops;
|
|
}
|
|
/* ... and allocate new one ... */
|
|
p -> cprot = isdn_concap_new( cfg -> p_encap );
|
|
/* p -> cprot == NULL now if p_encap is not supported
|
|
by means of the concap_proto mechanism */
|
|
/* the protocol is not configured yet; this will
|
|
happen later when isdn_net_reset() is called */
|
|
#endif
|
|
}
|
|
switch ( cfg->p_encap ) {
|
|
case ISDN_NET_ENCAP_SYNCPPP:
|
|
#ifndef CONFIG_ISDN_PPP
|
|
printk(KERN_WARNING "%s: SyncPPP support not configured\n",
|
|
lp->name);
|
|
return -EINVAL;
|
|
#else
|
|
p->dev.type = ARPHRD_PPP; /* change ARP type */
|
|
p->dev.addr_len = 0;
|
|
#endif
|
|
break;
|
|
case ISDN_NET_ENCAP_X25IFACE:
|
|
#ifndef CONFIG_ISDN_X25
|
|
printk(KERN_WARNING "%s: isdn-x25 support not configured\n",
|
|
p->local->name);
|
|
return -EINVAL;
|
|
#else
|
|
p->dev.type = ARPHRD_X25; /* change ARP type */
|
|
p->dev.addr_len = 0;
|
|
#endif
|
|
break;
|
|
default:
|
|
if( cfg->p_encap >= 0 &&
|
|
cfg->p_encap <= ISDN_NET_ENCAP_MAX_ENCAP )
|
|
break;
|
|
printk(KERN_WARNING
|
|
"%s: encapsulation protocol %d not supported\n",
|
|
p->local->name, cfg->p_encap);
|
|
return -EINVAL;
|
|
}
|
|
if (strlen(cfg->drvid)) {
|
|
/* A bind has been requested ... */
|
|
char *c,
|
|
*e;
|
|
|
|
drvidx = -1;
|
|
chidx = -1;
|
|
strcpy(drvid, cfg->drvid);
|
|
if ((c = strchr(drvid, ','))) {
|
|
/* The channel-number is appended to the driver-Id with a comma */
|
|
chidx = (int) simple_strtoul(c + 1, &e, 10);
|
|
if (e == c)
|
|
chidx = -1;
|
|
*c = '\0';
|
|
}
|
|
for (i = 0; i < ISDN_MAX_DRIVERS; i++)
|
|
/* Lookup driver-Id in array */
|
|
if (!(strcmp(dev->drvid[i], drvid))) {
|
|
drvidx = i;
|
|
break;
|
|
}
|
|
if ((drvidx == -1) || (chidx == -1))
|
|
/* Either driver-Id or channel-number invalid */
|
|
return -ENODEV;
|
|
} else {
|
|
/* Parameters are valid, so get them */
|
|
drvidx = lp->pre_device;
|
|
chidx = lp->pre_channel;
|
|
}
|
|
if (cfg->exclusive > 0) {
|
|
int flags;
|
|
|
|
/* If binding is exclusive, try to grab the channel */
|
|
save_flags(flags);
|
|
if ((i = isdn_get_free_channel(ISDN_USAGE_NET, lp->l2_proto,
|
|
lp->l3_proto,
|
|
drvidx,
|
|
chidx)) < 0) {
|
|
/* Grab failed, because desired channel is in use */
|
|
lp->exclusive = -1;
|
|
restore_flags(flags);
|
|
return -EBUSY;
|
|
}
|
|
/* All went ok, so update isdninfo */
|
|
dev->usage[i] = ISDN_USAGE_EXCLUSIVE;
|
|
isdn_info_update();
|
|
restore_flags(flags);
|
|
lp->exclusive = i;
|
|
} else {
|
|
/* Non-exclusive binding or unbind. */
|
|
lp->exclusive = -1;
|
|
if ((lp->pre_device != -1) && (cfg->exclusive == -1)) {
|
|
isdn_unexclusive_channel(lp->pre_device, lp->pre_channel);
|
|
isdn_free_channel(lp->pre_device, lp->pre_channel, ISDN_USAGE_NET);
|
|
drvidx = -1;
|
|
chidx = -1;
|
|
}
|
|
}
|
|
strcpy(lp->msn, cfg->eaz);
|
|
lp->pre_device = drvidx;
|
|
lp->pre_channel = chidx;
|
|
lp->onhtime = cfg->onhtime;
|
|
lp->charge = cfg->charge;
|
|
lp->l2_proto = cfg->l2_proto;
|
|
lp->l3_proto = cfg->l3_proto;
|
|
lp->cbdelay = cfg->cbdelay;
|
|
lp->dialmax = cfg->dialmax;
|
|
lp->triggercps = cfg->triggercps;
|
|
lp->slavedelay = cfg->slavedelay * HZ;
|
|
lp->pppbind = cfg->pppbind;
|
|
lp->dialtimeout = cfg->dialtimeout >= 0 ? cfg->dialtimeout * HZ : -1;
|
|
lp->dialwait = cfg->dialwait * HZ;
|
|
if (cfg->secure)
|
|
lp->flags |= ISDN_NET_SECURE;
|
|
else
|
|
lp->flags &= ~ISDN_NET_SECURE;
|
|
if (cfg->cbhup)
|
|
lp->flags |= ISDN_NET_CBHUP;
|
|
else
|
|
lp->flags &= ~ISDN_NET_CBHUP;
|
|
switch (cfg->callback) {
|
|
case 0:
|
|
lp->flags &= ~(ISDN_NET_CALLBACK | ISDN_NET_CBOUT);
|
|
break;
|
|
case 1:
|
|
lp->flags |= ISDN_NET_CALLBACK;
|
|
lp->flags &= ~ISDN_NET_CBOUT;
|
|
break;
|
|
case 2:
|
|
lp->flags |= ISDN_NET_CBOUT;
|
|
lp->flags &= ~ISDN_NET_CALLBACK;
|
|
break;
|
|
}
|
|
lp->flags &= ~ISDN_NET_DIALMODE_MASK; /* first all bits off */
|
|
if (cfg->dialmode && !(cfg->dialmode & ISDN_NET_DIALMODE_MASK)) {
|
|
/* old isdnctrl version, where only 0 or 1 is given */
|
|
printk(KERN_WARNING
|
|
"Old isdnctrl version detected! Please update.\n");
|
|
lp->flags |= ISDN_NET_DM_OFF; /* turn on `off' bit */
|
|
}
|
|
else {
|
|
lp->flags |= cfg->dialmode; /* turn on selected bits */
|
|
}
|
|
if (cfg->chargehup)
|
|
lp->hupflags |= ISDN_CHARGEHUP;
|
|
else
|
|
lp->hupflags &= ~ISDN_CHARGEHUP;
|
|
if (cfg->ihup)
|
|
lp->hupflags |= ISDN_INHUP;
|
|
else
|
|
lp->hupflags &= ~ISDN_INHUP;
|
|
if (cfg->chargeint > 10) {
|
|
lp->hupflags |= ISDN_CHARGEHUP | ISDN_HAVECHARGE | ISDN_MANCHARGE;
|
|
lp->chargeint = cfg->chargeint * HZ;
|
|
}
|
|
if (cfg->p_encap != lp->p_encap) {
|
|
if (cfg->p_encap == ISDN_NET_ENCAP_RAWIP) {
|
|
p->dev.hard_header = NULL;
|
|
p->dev.hard_header_cache = NULL;
|
|
p->dev.header_cache_update = NULL;
|
|
p->dev.flags = IFF_NOARP|IFF_POINTOPOINT;
|
|
} else {
|
|
p->dev.hard_header = isdn_net_header;
|
|
if (cfg->p_encap == ISDN_NET_ENCAP_ETHER) {
|
|
p->dev.hard_header_cache = lp->org_hhc;
|
|
p->dev.header_cache_update = lp->org_hcu;
|
|
p->dev.flags = IFF_BROADCAST | IFF_MULTICAST;
|
|
} else {
|
|
p->dev.hard_header_cache = NULL;
|
|
p->dev.header_cache_update = NULL;
|
|
p->dev.flags = IFF_NOARP|IFF_POINTOPOINT;
|
|
}
|
|
}
|
|
}
|
|
lp->p_encap = cfg->p_encap;
|
|
return 0;
|
|
}
|
|
return -ENODEV;
|
|
}
|
|
|
|
/*
|
|
* Perform get-interface-parameters.ioctl
|
|
*/
|
|
int
|
|
isdn_net_getcfg(isdn_net_ioctl_cfg * cfg)
|
|
{
|
|
isdn_net_dev *p = isdn_net_findif(cfg->name);
|
|
|
|
if (p) {
|
|
isdn_net_local *lp = p->local;
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|
|
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strcpy(cfg->eaz, lp->msn);
|
|
cfg->exclusive = lp->exclusive;
|
|
if (lp->pre_device >= 0) {
|
|
sprintf(cfg->drvid, "%s,%d", dev->drvid[lp->pre_device],
|
|
lp->pre_channel);
|
|
} else
|
|
cfg->drvid[0] = '\0';
|
|
cfg->onhtime = lp->onhtime;
|
|
cfg->charge = lp->charge;
|
|
cfg->l2_proto = lp->l2_proto;
|
|
cfg->l3_proto = lp->l3_proto;
|
|
cfg->p_encap = lp->p_encap;
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cfg->secure = (lp->flags & ISDN_NET_SECURE) ? 1 : 0;
|
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cfg->callback = 0;
|
|
if (lp->flags & ISDN_NET_CALLBACK)
|
|
cfg->callback = 1;
|
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if (lp->flags & ISDN_NET_CBOUT)
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cfg->callback = 2;
|
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cfg->cbhup = (lp->flags & ISDN_NET_CBHUP) ? 1 : 0;
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|
cfg->dialmode = lp->flags & ISDN_NET_DIALMODE_MASK;
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|
cfg->chargehup = (lp->hupflags & 4) ? 1 : 0;
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|
cfg->ihup = (lp->hupflags & 8) ? 1 : 0;
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cfg->cbdelay = lp->cbdelay;
|
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cfg->dialmax = lp->dialmax;
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cfg->triggercps = lp->triggercps;
|
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cfg->slavedelay = lp->slavedelay / HZ;
|
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cfg->chargeint = (lp->hupflags & ISDN_CHARGEHUP) ?
|
|
(lp->chargeint / HZ) : 0;
|
|
cfg->pppbind = lp->pppbind;
|
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cfg->dialtimeout = lp->dialtimeout >= 0 ? lp->dialtimeout / HZ : -1;
|
|
cfg->dialwait = lp->dialwait / HZ;
|
|
if (lp->slave)
|
|
strcpy(cfg->slave, ((isdn_net_local *) lp->slave->priv)->name);
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|
else
|
|
cfg->slave[0] = '\0';
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|
if (lp->master)
|
|
strcpy(cfg->master, ((isdn_net_local *) lp->master->priv)->name);
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|
else
|
|
cfg->master[0] = '\0';
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|
return 0;
|
|
}
|
|
return -ENODEV;
|
|
}
|
|
|
|
/*
|
|
* Add a phone-number to an interface.
|
|
*/
|
|
int
|
|
isdn_net_addphone(isdn_net_ioctl_phone * phone)
|
|
{
|
|
isdn_net_dev *p = isdn_net_findif(phone->name);
|
|
isdn_net_phone *n;
|
|
|
|
if (isdn_net_checkwild(phone->phone) && (phone->outgoing & 1))
|
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return -EINVAL;
|
|
if (p) {
|
|
if (!(n = (isdn_net_phone *) kmalloc(sizeof(isdn_net_phone), GFP_KERNEL)))
|
|
return -ENOMEM;
|
|
strcpy(n->num, phone->phone);
|
|
n->next = p->local->phone[phone->outgoing & 1];
|
|
p->local->phone[phone->outgoing & 1] = n;
|
|
return 0;
|
|
}
|
|
return -ENODEV;
|
|
}
|
|
|
|
/*
|
|
* Copy a string of all phone-numbers of an interface to user space.
|
|
* This might sleep and must be called with the isdn semaphore down.
|
|
*/
|
|
int
|
|
isdn_net_getphones(isdn_net_ioctl_phone * phone, char *phones)
|
|
{
|
|
isdn_net_dev *p = isdn_net_findif(phone->name);
|
|
int inout = phone->outgoing & 1;
|
|
int more = 0;
|
|
int count = 0;
|
|
isdn_net_phone *n;
|
|
|
|
if (!p)
|
|
return -ENODEV;
|
|
inout &= 1;
|
|
for (n = p->local->phone[inout]; n; n = n->next) {
|
|
if (more) {
|
|
put_user(' ', phones++);
|
|
count++;
|
|
}
|
|
if (copy_to_user(phones, n->num, strlen(n->num) + 1)) {
|
|
return -EFAULT;
|
|
}
|
|
phones += strlen(n->num);
|
|
count += strlen(n->num);
|
|
more = 1;
|
|
}
|
|
put_user(0, phones);
|
|
count++;
|
|
return count;
|
|
}
|
|
|
|
/*
|
|
* Copy a string containing the peer's phone number of a connected interface
|
|
* to user space.
|
|
*/
|
|
int
|
|
isdn_net_getpeer(isdn_net_ioctl_phone *phone, isdn_net_ioctl_phone *peer)
|
|
{
|
|
isdn_net_dev *p = isdn_net_findif(phone->name);
|
|
int ch, dv, idx;
|
|
|
|
if (!p) return -ENODEV;
|
|
/*
|
|
* Theoretical race: while this executes, the remote number might
|
|
* become invalid (hang up) or change (new connection), resulting
|
|
* in (partially) wrong number copied to user. This race
|
|
* currently ignored.
|
|
*/
|
|
ch = p->local->isdn_channel;
|
|
dv = p->local->isdn_device;
|
|
if(ch<0 && dv<0) return -ENOTCONN;
|
|
idx = isdn_dc2minor(dv, ch);
|
|
if (idx<0) return -ENODEV;
|
|
/* for pre-bound channels, we need this extra check */
|
|
if ( strncmp(dev->num[idx],"???",3) == 0 ) return -ENOTCONN;
|
|
strncpy(phone->phone,dev->num[idx],ISDN_MSNLEN);
|
|
phone->outgoing=USG_OUTGOING(idx);
|
|
if ( copy_to_user(peer,phone,sizeof(*peer)) ) return -EFAULT;
|
|
return 0;
|
|
}
|
|
/*
|
|
* Delete a phone-number from an interface.
|
|
*/
|
|
int
|
|
isdn_net_delphone(isdn_net_ioctl_phone * phone)
|
|
{
|
|
isdn_net_dev *p = isdn_net_findif(phone->name);
|
|
int inout = phone->outgoing & 1;
|
|
isdn_net_phone *n;
|
|
isdn_net_phone *m;
|
|
int flags;
|
|
|
|
if (p) {
|
|
save_flags(flags);
|
|
cli();
|
|
n = p->local->phone[inout];
|
|
m = NULL;
|
|
while (n) {
|
|
if (!strcmp(n->num, phone->phone)) {
|
|
if (p->local->dial == n)
|
|
p->local->dial = n->next;
|
|
if (m)
|
|
m->next = n->next;
|
|
else
|
|
p->local->phone[inout] = n->next;
|
|
kfree(n);
|
|
restore_flags(flags);
|
|
return 0;
|
|
}
|
|
m = n;
|
|
n = (isdn_net_phone *) n->next;
|
|
}
|
|
restore_flags(flags);
|
|
return -EINVAL;
|
|
}
|
|
return -ENODEV;
|
|
}
|
|
|
|
/*
|
|
* Delete all phone-numbers of an interface.
|
|
*/
|
|
static int
|
|
isdn_net_rmallphone(isdn_net_dev * p)
|
|
{
|
|
isdn_net_phone *n;
|
|
isdn_net_phone *m;
|
|
int flags;
|
|
int i;
|
|
|
|
save_flags(flags);
|
|
cli();
|
|
for (i = 0; i < 2; i++) {
|
|
n = p->local->phone[i];
|
|
while (n) {
|
|
m = n->next;
|
|
kfree(n);
|
|
n = m;
|
|
}
|
|
p->local->phone[i] = NULL;
|
|
}
|
|
p->local->dial = NULL;
|
|
restore_flags(flags);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Force a hangup of a network-interface.
|
|
*/
|
|
int
|
|
isdn_net_force_hangup(char *name)
|
|
{
|
|
isdn_net_dev *p = isdn_net_findif(name);
|
|
struct device *q;
|
|
|
|
if (p) {
|
|
if (p->local->isdn_device < 0)
|
|
return 1;
|
|
q = p->local->slave;
|
|
/* If this interface has slaves, do a hangup for them also. */
|
|
while (q) {
|
|
isdn_net_hangup(q);
|
|
q = (((isdn_net_local *) q->priv)->slave);
|
|
}
|
|
isdn_net_hangup(&p->dev);
|
|
return 0;
|
|
}
|
|
return -ENODEV;
|
|
}
|
|
|
|
/*
|
|
* Helper-function for isdn_net_rm: Do the real work.
|
|
*/
|
|
static int
|
|
isdn_net_realrm(isdn_net_dev * p, isdn_net_dev * q)
|
|
{
|
|
int flags;
|
|
|
|
save_flags(flags);
|
|
cli();
|
|
if (p->local->master) {
|
|
/* If it's a slave, it may be removed even if it is busy. However
|
|
* it has to be hung up first.
|
|
*/
|
|
isdn_net_hangup(&p->dev);
|
|
p->dev.start = 0;
|
|
}
|
|
if (p->dev.start) {
|
|
restore_flags(flags);
|
|
return -EBUSY;
|
|
}
|
|
#ifdef CONFIG_ISDN_X25
|
|
if( p -> cprot && p -> cprot -> pops )
|
|
p -> cprot -> pops -> proto_del ( p -> cprot );
|
|
#endif
|
|
/* Free all phone-entries */
|
|
isdn_net_rmallphone(p);
|
|
/* If interface is bound exclusive, free channel-usage */
|
|
if (p->local->exclusive != -1)
|
|
isdn_unexclusive_channel(p->local->pre_device, p->local->pre_channel);
|
|
if (p->local->master) {
|
|
/* It's a slave-device, so update master's slave-pointer if necessary */
|
|
if (((isdn_net_local *) (p->local->master->priv))->slave == &p->dev)
|
|
((isdn_net_local *) (p->local->master->priv))->slave = p->local->slave;
|
|
} else {
|
|
/* Unregister only if it's a master-device */
|
|
p->dev.hard_header_cache = p->local->org_hhc;
|
|
p->dev.header_cache_update = p->local->org_hcu;
|
|
unregister_netdev(&p->dev);
|
|
}
|
|
/* Unlink device from chain */
|
|
if (q)
|
|
q->next = p->next;
|
|
else
|
|
dev->netdev = p->next;
|
|
if (p->local->slave) {
|
|
/* If this interface has a slave, remove it also */
|
|
char *slavename = ((isdn_net_local *) (p->local->slave->priv))->name;
|
|
isdn_net_dev *n = dev->netdev;
|
|
q = NULL;
|
|
while (n) {
|
|
if (!strcmp(n->local->name, slavename)) {
|
|
isdn_net_realrm(n, q);
|
|
break;
|
|
}
|
|
q = n;
|
|
n = (isdn_net_dev *) n->next;
|
|
}
|
|
}
|
|
/* If no more net-devices remain, disable auto-hangup timer */
|
|
if (dev->netdev == NULL)
|
|
isdn_timer_ctrl(ISDN_TIMER_NETHANGUP, 0);
|
|
restore_flags(flags);
|
|
|
|
kfree(p->local);
|
|
kfree(p);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Remove a single network-interface.
|
|
*/
|
|
int
|
|
isdn_net_rm(char *name)
|
|
{
|
|
isdn_net_dev *p;
|
|
isdn_net_dev *q;
|
|
|
|
/* Search name in netdev-chain */
|
|
p = dev->netdev;
|
|
q = NULL;
|
|
while (p) {
|
|
if (!strcmp(p->local->name, name))
|
|
return (isdn_net_realrm(p, q));
|
|
q = p;
|
|
p = (isdn_net_dev *) p->next;
|
|
}
|
|
/* If no more net-devices remain, disable auto-hangup timer */
|
|
if (dev->netdev == NULL)
|
|
isdn_timer_ctrl(ISDN_TIMER_NETHANGUP, 0);
|
|
return -ENODEV;
|
|
}
|
|
|
|
/*
|
|
* Remove all network-interfaces
|
|
*/
|
|
int
|
|
isdn_net_rmall(void)
|
|
{
|
|
int flags;
|
|
int ret;
|
|
|
|
/* Walk through netdev-chain */
|
|
save_flags(flags);
|
|
cli();
|
|
while (dev->netdev) {
|
|
if (!dev->netdev->local->master) {
|
|
/* Remove master-devices only, slaves get removed with their master */
|
|
if ((ret = isdn_net_realrm(dev->netdev, NULL))) {
|
|
restore_flags(flags);
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
dev->netdev = NULL;
|
|
restore_flags(flags);
|
|
return 0;
|
|
}
|