2008-07-26 17:54:58 -06:00
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/*
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*
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* Author Karsten Keil <kkeil@novell.com>
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*
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* Copyright 2008 by Karsten Keil <kkeil@novell.com>
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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 version 2 as
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* published by the Free Software Foundation.
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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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*/
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#include "layer2.h"
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#include <linux/random.h>
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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 02:04:11 -06:00
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#include <linux/slab.h>
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2008-07-26 17:54:58 -06:00
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#include "core.h"
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#define ID_REQUEST 1
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#define ID_ASSIGNED 2
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#define ID_DENIED 3
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#define ID_CHK_REQ 4
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#define ID_CHK_RES 5
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#define ID_REMOVE 6
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#define ID_VERIFY 7
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#define TEI_ENTITY_ID 0xf
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#define MGR_PH_ACTIVE 16
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#define MGR_PH_NOTREADY 17
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#define DATIMER_VAL 10000
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static u_int *debug;
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static struct Fsm deactfsm = {NULL, 0, 0, NULL, NULL};
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static struct Fsm teifsmu = {NULL, 0, 0, NULL, NULL};
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static struct Fsm teifsmn = {NULL, 0, 0, NULL, NULL};
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enum {
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ST_L1_DEACT,
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ST_L1_DEACT_PENDING,
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ST_L1_ACTIV,
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};
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#define DEACT_STATE_COUNT (ST_L1_ACTIV+1)
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static char *strDeactState[] =
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{
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"ST_L1_DEACT",
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"ST_L1_DEACT_PENDING",
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"ST_L1_ACTIV",
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};
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enum {
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EV_ACTIVATE,
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EV_ACTIVATE_IND,
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EV_DEACTIVATE,
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EV_DEACTIVATE_IND,
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EV_UI,
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EV_DATIMER,
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};
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#define DEACT_EVENT_COUNT (EV_DATIMER+1)
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static char *strDeactEvent[] =
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{
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"EV_ACTIVATE",
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"EV_ACTIVATE_IND",
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"EV_DEACTIVATE",
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"EV_DEACTIVATE_IND",
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"EV_UI",
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"EV_DATIMER",
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};
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static void
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da_debug(struct FsmInst *fi, char *fmt, ...)
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{
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struct manager *mgr = fi->userdata;
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va_list va;
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if (!(*debug & DEBUG_L2_TEIFSM))
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return;
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va_start(va, fmt);
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printk(KERN_DEBUG "mgr(%d): ", mgr->ch.st->dev->id);
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vprintk(fmt, va);
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printk("\n");
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va_end(va);
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}
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static void
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da_activate(struct FsmInst *fi, int event, void *arg)
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{
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struct manager *mgr = fi->userdata;
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if (fi->state == ST_L1_DEACT_PENDING)
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mISDN_FsmDelTimer(&mgr->datimer, 1);
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mISDN_FsmChangeState(fi, ST_L1_ACTIV);
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}
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static void
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da_deactivate_ind(struct FsmInst *fi, int event, void *arg)
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{
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mISDN_FsmChangeState(fi, ST_L1_DEACT);
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}
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static void
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da_deactivate(struct FsmInst *fi, int event, void *arg)
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{
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struct manager *mgr = fi->userdata;
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struct layer2 *l2;
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u_long flags;
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read_lock_irqsave(&mgr->lock, flags);
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list_for_each_entry(l2, &mgr->layer2, list) {
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if (l2->l2m.state > ST_L2_4) {
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/* have still activ TEI */
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read_unlock_irqrestore(&mgr->lock, flags);
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return;
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}
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}
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read_unlock_irqrestore(&mgr->lock, flags);
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/* All TEI are inactiv */
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2009-05-22 05:04:48 -06:00
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if (!test_bit(OPTION_L1_HOLD, &mgr->options)) {
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mISDN_FsmAddTimer(&mgr->datimer, DATIMER_VAL, EV_DATIMER,
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NULL, 1);
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mISDN_FsmChangeState(fi, ST_L1_DEACT_PENDING);
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}
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2008-07-26 17:54:58 -06:00
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}
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static void
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da_ui(struct FsmInst *fi, int event, void *arg)
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{
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struct manager *mgr = fi->userdata;
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/* restart da timer */
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2009-05-22 05:04:48 -06:00
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if (!test_bit(OPTION_L1_HOLD, &mgr->options)) {
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mISDN_FsmDelTimer(&mgr->datimer, 2);
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mISDN_FsmAddTimer(&mgr->datimer, DATIMER_VAL, EV_DATIMER,
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NULL, 2);
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}
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2008-07-26 17:54:58 -06:00
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}
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static void
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da_timer(struct FsmInst *fi, int event, void *arg)
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{
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struct manager *mgr = fi->userdata;
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struct layer2 *l2;
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u_long flags;
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/* check again */
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read_lock_irqsave(&mgr->lock, flags);
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list_for_each_entry(l2, &mgr->layer2, list) {
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if (l2->l2m.state > ST_L2_4) {
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/* have still activ TEI */
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read_unlock_irqrestore(&mgr->lock, flags);
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mISDN_FsmChangeState(fi, ST_L1_ACTIV);
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return;
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}
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}
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read_unlock_irqrestore(&mgr->lock, flags);
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/* All TEI are inactiv */
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mISDN_FsmChangeState(fi, ST_L1_DEACT);
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_queue_data(&mgr->ch, PH_DEACTIVATE_REQ, MISDN_ID_ANY, 0, NULL,
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GFP_ATOMIC);
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}
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static struct FsmNode DeactFnList[] =
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{
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{ST_L1_DEACT, EV_ACTIVATE_IND, da_activate},
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{ST_L1_ACTIV, EV_DEACTIVATE_IND, da_deactivate_ind},
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{ST_L1_ACTIV, EV_DEACTIVATE, da_deactivate},
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{ST_L1_DEACT_PENDING, EV_ACTIVATE, da_activate},
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{ST_L1_DEACT_PENDING, EV_UI, da_ui},
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{ST_L1_DEACT_PENDING, EV_DATIMER, da_timer},
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};
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enum {
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ST_TEI_NOP,
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ST_TEI_IDREQ,
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ST_TEI_IDVERIFY,
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};
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#define TEI_STATE_COUNT (ST_TEI_IDVERIFY+1)
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static char *strTeiState[] =
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{
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"ST_TEI_NOP",
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"ST_TEI_IDREQ",
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"ST_TEI_IDVERIFY",
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};
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enum {
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EV_IDREQ,
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EV_ASSIGN,
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EV_ASSIGN_REQ,
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EV_DENIED,
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EV_CHKREQ,
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EV_CHKRESP,
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EV_REMOVE,
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EV_VERIFY,
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EV_TIMER,
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};
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#define TEI_EVENT_COUNT (EV_TIMER+1)
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static char *strTeiEvent[] =
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{
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"EV_IDREQ",
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"EV_ASSIGN",
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"EV_ASSIGN_REQ",
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"EV_DENIED",
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"EV_CHKREQ",
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"EV_CHKRESP",
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"EV_REMOVE",
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"EV_VERIFY",
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"EV_TIMER",
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};
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static void
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tei_debug(struct FsmInst *fi, char *fmt, ...)
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{
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struct teimgr *tm = fi->userdata;
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va_list va;
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if (!(*debug & DEBUG_L2_TEIFSM))
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return;
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va_start(va, fmt);
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2009-05-22 05:04:51 -06:00
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printk(KERN_DEBUG "sapi(%d) tei(%d): ", tm->l2->sapi, tm->l2->tei);
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2008-07-26 17:54:58 -06:00
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vprintk(fmt, va);
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printk("\n");
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va_end(va);
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}
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static int
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get_free_id(struct manager *mgr)
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{
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u64 ids = 0;
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int i;
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struct layer2 *l2;
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list_for_each_entry(l2, &mgr->layer2, list) {
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if (l2->ch.nr > 63) {
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printk(KERN_WARNING
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"%s: more as 63 layer2 for one device\n",
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__func__);
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return -EBUSY;
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}
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test_and_set_bit(l2->ch.nr, (u_long *)&ids);
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}
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for (i = 1; i < 64; i++)
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if (!test_bit(i, (u_long *)&ids))
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return i;
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printk(KERN_WARNING "%s: more as 63 layer2 for one device\n",
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__func__);
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return -EBUSY;
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}
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static int
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get_free_tei(struct manager *mgr)
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{
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u64 ids = 0;
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int i;
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struct layer2 *l2;
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list_for_each_entry(l2, &mgr->layer2, list) {
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if (l2->ch.nr == 0)
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continue;
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if ((l2->ch.addr & 0xff) != 0)
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continue;
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i = l2->ch.addr >> 8;
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if (i < 64)
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continue;
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i -= 64;
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test_and_set_bit(i, (u_long *)&ids);
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}
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for (i = 0; i < 64; i++)
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if (!test_bit(i, (u_long *)&ids))
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return i + 64;
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printk(KERN_WARNING "%s: more as 63 dynamic tei for one device\n",
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__func__);
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return -1;
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}
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static void
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teiup_create(struct manager *mgr, u_int prim, int len, void *arg)
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{
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struct sk_buff *skb;
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struct mISDNhead *hh;
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int err;
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skb = mI_alloc_skb(len, GFP_ATOMIC);
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if (!skb)
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return;
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hh = mISDN_HEAD_P(skb);
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hh->prim = prim;
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hh->id = (mgr->ch.nr << 16) | mgr->ch.addr;
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if (len)
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memcpy(skb_put(skb, len), arg, len);
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err = mgr->up->send(mgr->up, skb);
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if (err) {
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printk(KERN_WARNING "%s: err=%d\n", __func__, err);
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dev_kfree_skb(skb);
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}
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}
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static u_int
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new_id(struct manager *mgr)
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{
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u_int id;
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id = mgr->nextid++;
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if (id == 0x7fff)
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mgr->nextid = 1;
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id <<= 16;
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id |= GROUP_TEI << 8;
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id |= TEI_SAPI;
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return id;
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}
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static void
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do_send(struct manager *mgr)
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{
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|
|
if (!test_bit(MGR_PH_ACTIVE, &mgr->options))
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (!test_and_set_bit(MGR_PH_NOTREADY, &mgr->options)) {
|
|
|
|
struct sk_buff *skb = skb_dequeue(&mgr->sendq);
|
|
|
|
|
|
|
|
if (!skb) {
|
|
|
|
test_and_clear_bit(MGR_PH_NOTREADY, &mgr->options);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
mgr->lastid = mISDN_HEAD_ID(skb);
|
|
|
|
mISDN_FsmEvent(&mgr->deact, EV_UI, NULL);
|
|
|
|
if (mgr->ch.recv(mgr->ch.peer, skb)) {
|
|
|
|
dev_kfree_skb(skb);
|
|
|
|
test_and_clear_bit(MGR_PH_NOTREADY, &mgr->options);
|
|
|
|
mgr->lastid = MISDN_ID_NONE;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
do_ack(struct manager *mgr, u_int id)
|
|
|
|
{
|
|
|
|
if (test_bit(MGR_PH_NOTREADY, &mgr->options)) {
|
|
|
|
if (id == mgr->lastid) {
|
|
|
|
if (test_bit(MGR_PH_ACTIVE, &mgr->options)) {
|
|
|
|
struct sk_buff *skb;
|
|
|
|
|
|
|
|
skb = skb_dequeue(&mgr->sendq);
|
|
|
|
if (skb) {
|
|
|
|
mgr->lastid = mISDN_HEAD_ID(skb);
|
|
|
|
if (!mgr->ch.recv(mgr->ch.peer, skb))
|
|
|
|
return;
|
|
|
|
dev_kfree_skb(skb);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
mgr->lastid = MISDN_ID_NONE;
|
|
|
|
test_and_clear_bit(MGR_PH_NOTREADY, &mgr->options);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
mgr_send_down(struct manager *mgr, struct sk_buff *skb)
|
|
|
|
{
|
|
|
|
skb_queue_tail(&mgr->sendq, skb);
|
|
|
|
if (!test_bit(MGR_PH_ACTIVE, &mgr->options)) {
|
|
|
|
_queue_data(&mgr->ch, PH_ACTIVATE_REQ, MISDN_ID_ANY, 0,
|
|
|
|
NULL, GFP_KERNEL);
|
|
|
|
} else {
|
|
|
|
do_send(mgr);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dl_unit_data(struct manager *mgr, struct sk_buff *skb)
|
|
|
|
{
|
|
|
|
if (!test_bit(MGR_OPT_NETWORK, &mgr->options)) /* only net send UI */
|
|
|
|
return -EINVAL;
|
|
|
|
if (!test_bit(MGR_PH_ACTIVE, &mgr->options))
|
|
|
|
_queue_data(&mgr->ch, PH_ACTIVATE_REQ, MISDN_ID_ANY, 0,
|
|
|
|
NULL, GFP_KERNEL);
|
|
|
|
skb_push(skb, 3);
|
|
|
|
skb->data[0] = 0x02; /* SAPI 0 C/R = 1 */
|
|
|
|
skb->data[1] = 0xff; /* TEI 127 */
|
|
|
|
skb->data[2] = UI; /* UI frame */
|
|
|
|
mISDN_HEAD_PRIM(skb) = PH_DATA_REQ;
|
|
|
|
mISDN_HEAD_ID(skb) = new_id(mgr);
|
|
|
|
skb_queue_tail(&mgr->sendq, skb);
|
|
|
|
do_send(mgr);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2008-12-12 22:15:17 -07:00
|
|
|
static unsigned int
|
2008-07-26 17:54:58 -06:00
|
|
|
random_ri(void)
|
|
|
|
{
|
|
|
|
u16 x;
|
|
|
|
|
|
|
|
get_random_bytes(&x, sizeof(x));
|
|
|
|
return x;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct layer2 *
|
|
|
|
findtei(struct manager *mgr, int tei)
|
|
|
|
{
|
|
|
|
struct layer2 *l2;
|
|
|
|
u_long flags;
|
|
|
|
|
|
|
|
read_lock_irqsave(&mgr->lock, flags);
|
|
|
|
list_for_each_entry(l2, &mgr->layer2, list) {
|
|
|
|
if ((l2->sapi == 0) && (l2->tei > 0) &&
|
|
|
|
(l2->tei != GROUP_TEI) && (l2->tei == tei))
|
|
|
|
goto done;
|
|
|
|
}
|
|
|
|
l2 = NULL;
|
|
|
|
done:
|
|
|
|
read_unlock_irqrestore(&mgr->lock, flags);
|
|
|
|
return l2;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
2009-05-25 01:50:02 -06:00
|
|
|
put_tei_msg(struct manager *mgr, u_char m_id, unsigned int ri, int tei)
|
2008-07-26 17:54:58 -06:00
|
|
|
{
|
|
|
|
struct sk_buff *skb;
|
|
|
|
u_char bp[8];
|
|
|
|
|
|
|
|
bp[0] = (TEI_SAPI << 2);
|
|
|
|
if (test_bit(MGR_OPT_NETWORK, &mgr->options))
|
|
|
|
bp[0] |= 2; /* CR:=1 for net command */
|
|
|
|
bp[1] = (GROUP_TEI << 1) | 0x1;
|
|
|
|
bp[2] = UI;
|
|
|
|
bp[3] = TEI_ENTITY_ID;
|
|
|
|
bp[4] = ri >> 8;
|
|
|
|
bp[5] = ri & 0xff;
|
|
|
|
bp[6] = m_id;
|
2009-05-25 01:50:02 -06:00
|
|
|
bp[7] = ((tei << 1) & 0xff) | 1;
|
|
|
|
skb = _alloc_mISDN_skb(PH_DATA_REQ, new_id(mgr), 8, bp, GFP_ATOMIC);
|
2008-07-26 17:54:58 -06:00
|
|
|
if (!skb) {
|
|
|
|
printk(KERN_WARNING "%s: no skb for tei msg\n", __func__);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
mgr_send_down(mgr, skb);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
tei_id_request(struct FsmInst *fi, int event, void *arg)
|
|
|
|
{
|
|
|
|
struct teimgr *tm = fi->userdata;
|
|
|
|
|
|
|
|
if (tm->l2->tei != GROUP_TEI) {
|
|
|
|
tm->tei_m.printdebug(&tm->tei_m,
|
2010-07-02 12:41:51 -06:00
|
|
|
"assign request for already assigned tei %d",
|
2008-07-26 17:54:58 -06:00
|
|
|
tm->l2->tei);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
tm->ri = random_ri();
|
|
|
|
if (*debug & DEBUG_L2_TEI)
|
|
|
|
tm->tei_m.printdebug(&tm->tei_m,
|
|
|
|
"assign request ri %d", tm->ri);
|
|
|
|
put_tei_msg(tm->mgr, ID_REQUEST, tm->ri, GROUP_TEI);
|
|
|
|
mISDN_FsmChangeState(fi, ST_TEI_IDREQ);
|
|
|
|
mISDN_FsmAddTimer(&tm->timer, tm->tval, EV_TIMER, NULL, 1);
|
|
|
|
tm->nval = 3;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
tei_id_assign(struct FsmInst *fi, int event, void *arg)
|
|
|
|
{
|
|
|
|
struct teimgr *tm = fi->userdata;
|
|
|
|
struct layer2 *l2;
|
|
|
|
u_char *dp = arg;
|
|
|
|
int ri, tei;
|
|
|
|
|
|
|
|
ri = ((unsigned int) *dp++ << 8);
|
|
|
|
ri += *dp++;
|
|
|
|
dp++;
|
|
|
|
tei = *dp >> 1;
|
|
|
|
if (*debug & DEBUG_L2_TEI)
|
|
|
|
tm->tei_m.printdebug(fi, "identity assign ri %d tei %d",
|
|
|
|
ri, tei);
|
|
|
|
l2 = findtei(tm->mgr, tei);
|
|
|
|
if (l2) { /* same tei is in use */
|
|
|
|
if (ri != l2->tm->ri) {
|
|
|
|
tm->tei_m.printdebug(fi,
|
|
|
|
"possible duplicate assignment tei %d", tei);
|
|
|
|
tei_l2(l2, MDL_ERROR_RSP, 0);
|
|
|
|
}
|
|
|
|
} else if (ri == tm->ri) {
|
|
|
|
mISDN_FsmDelTimer(&tm->timer, 1);
|
|
|
|
mISDN_FsmChangeState(fi, ST_TEI_NOP);
|
|
|
|
tei_l2(tm->l2, MDL_ASSIGN_REQ, tei);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
tei_id_test_dup(struct FsmInst *fi, int event, void *arg)
|
|
|
|
{
|
|
|
|
struct teimgr *tm = fi->userdata;
|
|
|
|
struct layer2 *l2;
|
|
|
|
u_char *dp = arg;
|
|
|
|
int tei, ri;
|
|
|
|
|
|
|
|
ri = ((unsigned int) *dp++ << 8);
|
|
|
|
ri += *dp++;
|
|
|
|
dp++;
|
|
|
|
tei = *dp >> 1;
|
|
|
|
if (*debug & DEBUG_L2_TEI)
|
|
|
|
tm->tei_m.printdebug(fi, "foreign identity assign ri %d tei %d",
|
|
|
|
ri, tei);
|
|
|
|
l2 = findtei(tm->mgr, tei);
|
|
|
|
if (l2) { /* same tei is in use */
|
|
|
|
if (ri != l2->tm->ri) { /* and it wasn't our request */
|
|
|
|
tm->tei_m.printdebug(fi,
|
|
|
|
"possible duplicate assignment tei %d", tei);
|
|
|
|
mISDN_FsmEvent(&l2->tm->tei_m, EV_VERIFY, NULL);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
tei_id_denied(struct FsmInst *fi, int event, void *arg)
|
|
|
|
{
|
|
|
|
struct teimgr *tm = fi->userdata;
|
|
|
|
u_char *dp = arg;
|
|
|
|
int ri, tei;
|
|
|
|
|
|
|
|
ri = ((unsigned int) *dp++ << 8);
|
|
|
|
ri += *dp++;
|
|
|
|
dp++;
|
|
|
|
tei = *dp >> 1;
|
|
|
|
if (*debug & DEBUG_L2_TEI)
|
|
|
|
tm->tei_m.printdebug(fi, "identity denied ri %d tei %d",
|
|
|
|
ri, tei);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
tei_id_chk_req(struct FsmInst *fi, int event, void *arg)
|
|
|
|
{
|
|
|
|
struct teimgr *tm = fi->userdata;
|
|
|
|
u_char *dp = arg;
|
|
|
|
int tei;
|
|
|
|
|
|
|
|
tei = *(dp+3) >> 1;
|
|
|
|
if (*debug & DEBUG_L2_TEI)
|
|
|
|
tm->tei_m.printdebug(fi, "identity check req tei %d", tei);
|
|
|
|
if ((tm->l2->tei != GROUP_TEI) && ((tei == GROUP_TEI) ||
|
|
|
|
(tei == tm->l2->tei))) {
|
|
|
|
mISDN_FsmDelTimer(&tm->timer, 4);
|
|
|
|
mISDN_FsmChangeState(&tm->tei_m, ST_TEI_NOP);
|
|
|
|
put_tei_msg(tm->mgr, ID_CHK_RES, random_ri(), tm->l2->tei);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
tei_id_remove(struct FsmInst *fi, int event, void *arg)
|
|
|
|
{
|
|
|
|
struct teimgr *tm = fi->userdata;
|
|
|
|
u_char *dp = arg;
|
|
|
|
int tei;
|
|
|
|
|
|
|
|
tei = *(dp+3) >> 1;
|
|
|
|
if (*debug & DEBUG_L2_TEI)
|
|
|
|
tm->tei_m.printdebug(fi, "identity remove tei %d", tei);
|
|
|
|
if ((tm->l2->tei != GROUP_TEI) &&
|
|
|
|
((tei == GROUP_TEI) || (tei == tm->l2->tei))) {
|
|
|
|
mISDN_FsmDelTimer(&tm->timer, 5);
|
|
|
|
mISDN_FsmChangeState(&tm->tei_m, ST_TEI_NOP);
|
|
|
|
tei_l2(tm->l2, MDL_REMOVE_REQ, 0);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
tei_id_verify(struct FsmInst *fi, int event, void *arg)
|
|
|
|
{
|
|
|
|
struct teimgr *tm = fi->userdata;
|
|
|
|
|
|
|
|
if (*debug & DEBUG_L2_TEI)
|
|
|
|
tm->tei_m.printdebug(fi, "id verify request for tei %d",
|
|
|
|
tm->l2->tei);
|
|
|
|
put_tei_msg(tm->mgr, ID_VERIFY, 0, tm->l2->tei);
|
|
|
|
mISDN_FsmChangeState(&tm->tei_m, ST_TEI_IDVERIFY);
|
|
|
|
mISDN_FsmAddTimer(&tm->timer, tm->tval, EV_TIMER, NULL, 2);
|
|
|
|
tm->nval = 2;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
tei_id_req_tout(struct FsmInst *fi, int event, void *arg)
|
|
|
|
{
|
|
|
|
struct teimgr *tm = fi->userdata;
|
|
|
|
|
|
|
|
if (--tm->nval) {
|
|
|
|
tm->ri = random_ri();
|
|
|
|
if (*debug & DEBUG_L2_TEI)
|
|
|
|
tm->tei_m.printdebug(fi, "assign req(%d) ri %d",
|
|
|
|
4 - tm->nval, tm->ri);
|
|
|
|
put_tei_msg(tm->mgr, ID_REQUEST, tm->ri, GROUP_TEI);
|
|
|
|
mISDN_FsmAddTimer(&tm->timer, tm->tval, EV_TIMER, NULL, 3);
|
|
|
|
} else {
|
|
|
|
tm->tei_m.printdebug(fi, "assign req failed");
|
|
|
|
tei_l2(tm->l2, MDL_ERROR_RSP, 0);
|
|
|
|
mISDN_FsmChangeState(fi, ST_TEI_NOP);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
tei_id_ver_tout(struct FsmInst *fi, int event, void *arg)
|
|
|
|
{
|
|
|
|
struct teimgr *tm = fi->userdata;
|
|
|
|
|
|
|
|
if (--tm->nval) {
|
|
|
|
if (*debug & DEBUG_L2_TEI)
|
|
|
|
tm->tei_m.printdebug(fi,
|
|
|
|
"id verify req(%d) for tei %d",
|
|
|
|
3 - tm->nval, tm->l2->tei);
|
|
|
|
put_tei_msg(tm->mgr, ID_VERIFY, 0, tm->l2->tei);
|
|
|
|
mISDN_FsmAddTimer(&tm->timer, tm->tval, EV_TIMER, NULL, 4);
|
|
|
|
} else {
|
|
|
|
tm->tei_m.printdebug(fi, "verify req for tei %d failed",
|
|
|
|
tm->l2->tei);
|
|
|
|
tei_l2(tm->l2, MDL_REMOVE_REQ, 0);
|
|
|
|
mISDN_FsmChangeState(fi, ST_TEI_NOP);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct FsmNode TeiFnListUser[] =
|
|
|
|
{
|
|
|
|
{ST_TEI_NOP, EV_IDREQ, tei_id_request},
|
|
|
|
{ST_TEI_NOP, EV_ASSIGN, tei_id_test_dup},
|
|
|
|
{ST_TEI_NOP, EV_VERIFY, tei_id_verify},
|
|
|
|
{ST_TEI_NOP, EV_REMOVE, tei_id_remove},
|
|
|
|
{ST_TEI_NOP, EV_CHKREQ, tei_id_chk_req},
|
|
|
|
{ST_TEI_IDREQ, EV_TIMER, tei_id_req_tout},
|
|
|
|
{ST_TEI_IDREQ, EV_ASSIGN, tei_id_assign},
|
|
|
|
{ST_TEI_IDREQ, EV_DENIED, tei_id_denied},
|
|
|
|
{ST_TEI_IDVERIFY, EV_TIMER, tei_id_ver_tout},
|
|
|
|
{ST_TEI_IDVERIFY, EV_REMOVE, tei_id_remove},
|
|
|
|
{ST_TEI_IDVERIFY, EV_CHKREQ, tei_id_chk_req},
|
|
|
|
};
|
|
|
|
|
|
|
|
static void
|
|
|
|
tei_l2remove(struct layer2 *l2)
|
|
|
|
{
|
|
|
|
put_tei_msg(l2->tm->mgr, ID_REMOVE, 0, l2->tei);
|
|
|
|
tei_l2(l2, MDL_REMOVE_REQ, 0);
|
|
|
|
list_del(&l2->ch.list);
|
|
|
|
l2->ch.ctrl(&l2->ch, CLOSE_CHANNEL, NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
tei_assign_req(struct FsmInst *fi, int event, void *arg)
|
|
|
|
{
|
|
|
|
struct teimgr *tm = fi->userdata;
|
|
|
|
u_char *dp = arg;
|
|
|
|
|
|
|
|
if (tm->l2->tei == GROUP_TEI) {
|
|
|
|
tm->tei_m.printdebug(&tm->tei_m,
|
|
|
|
"net tei assign request without tei");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
tm->ri = ((unsigned int) *dp++ << 8);
|
|
|
|
tm->ri += *dp++;
|
|
|
|
if (*debug & DEBUG_L2_TEI)
|
|
|
|
tm->tei_m.printdebug(&tm->tei_m,
|
|
|
|
"net assign request ri %d teim %d", tm->ri, *dp);
|
|
|
|
put_tei_msg(tm->mgr, ID_ASSIGNED, tm->ri, tm->l2->tei);
|
|
|
|
mISDN_FsmChangeState(fi, ST_TEI_NOP);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
tei_id_chk_req_net(struct FsmInst *fi, int event, void *arg)
|
|
|
|
{
|
|
|
|
struct teimgr *tm = fi->userdata;
|
|
|
|
|
|
|
|
if (*debug & DEBUG_L2_TEI)
|
|
|
|
tm->tei_m.printdebug(fi, "id check request for tei %d",
|
|
|
|
tm->l2->tei);
|
|
|
|
tm->rcnt = 0;
|
|
|
|
put_tei_msg(tm->mgr, ID_CHK_REQ, 0, tm->l2->tei);
|
|
|
|
mISDN_FsmChangeState(&tm->tei_m, ST_TEI_IDVERIFY);
|
|
|
|
mISDN_FsmAddTimer(&tm->timer, tm->tval, EV_TIMER, NULL, 2);
|
|
|
|
tm->nval = 2;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
tei_id_chk_resp(struct FsmInst *fi, int event, void *arg)
|
|
|
|
{
|
|
|
|
struct teimgr *tm = fi->userdata;
|
|
|
|
u_char *dp = arg;
|
|
|
|
int tei;
|
|
|
|
|
|
|
|
tei = dp[3] >> 1;
|
|
|
|
if (*debug & DEBUG_L2_TEI)
|
|
|
|
tm->tei_m.printdebug(fi, "identity check resp tei %d", tei);
|
|
|
|
if (tei == tm->l2->tei)
|
|
|
|
tm->rcnt++;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
tei_id_verify_net(struct FsmInst *fi, int event, void *arg)
|
|
|
|
{
|
|
|
|
struct teimgr *tm = fi->userdata;
|
|
|
|
u_char *dp = arg;
|
|
|
|
int tei;
|
|
|
|
|
|
|
|
tei = dp[3] >> 1;
|
|
|
|
if (*debug & DEBUG_L2_TEI)
|
|
|
|
tm->tei_m.printdebug(fi, "identity verify req tei %d/%d",
|
|
|
|
tei, tm->l2->tei);
|
|
|
|
if (tei == tm->l2->tei)
|
|
|
|
tei_id_chk_req_net(fi, event, arg);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
tei_id_ver_tout_net(struct FsmInst *fi, int event, void *arg)
|
|
|
|
{
|
|
|
|
struct teimgr *tm = fi->userdata;
|
|
|
|
|
|
|
|
if (tm->rcnt == 1) {
|
|
|
|
if (*debug & DEBUG_L2_TEI)
|
|
|
|
tm->tei_m.printdebug(fi,
|
tree-wide: fix assorted typos all over the place
That is "success", "unknown", "through", "performance", "[re|un]mapping"
, "access", "default", "reasonable", "[con]currently", "temperature"
, "channel", "[un]used", "application", "example","hierarchy", "therefore"
, "[over|under]flow", "contiguous", "threshold", "enough" and others.
Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-11-14 08:09:05 -07:00
|
|
|
"check req for tei %d successful\n", tm->l2->tei);
|
2008-07-26 17:54:58 -06:00
|
|
|
mISDN_FsmChangeState(fi, ST_TEI_NOP);
|
|
|
|
} else if (tm->rcnt > 1) {
|
|
|
|
/* duplicate assignment; remove */
|
|
|
|
tei_l2remove(tm->l2);
|
|
|
|
} else if (--tm->nval) {
|
|
|
|
if (*debug & DEBUG_L2_TEI)
|
|
|
|
tm->tei_m.printdebug(fi,
|
|
|
|
"id check req(%d) for tei %d",
|
|
|
|
3 - tm->nval, tm->l2->tei);
|
|
|
|
put_tei_msg(tm->mgr, ID_CHK_REQ, 0, tm->l2->tei);
|
|
|
|
mISDN_FsmAddTimer(&tm->timer, tm->tval, EV_TIMER, NULL, 4);
|
|
|
|
} else {
|
|
|
|
tm->tei_m.printdebug(fi, "check req for tei %d failed",
|
|
|
|
tm->l2->tei);
|
|
|
|
mISDN_FsmChangeState(fi, ST_TEI_NOP);
|
|
|
|
tei_l2remove(tm->l2);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct FsmNode TeiFnListNet[] =
|
|
|
|
{
|
|
|
|
{ST_TEI_NOP, EV_ASSIGN_REQ, tei_assign_req},
|
|
|
|
{ST_TEI_NOP, EV_VERIFY, tei_id_verify_net},
|
|
|
|
{ST_TEI_NOP, EV_CHKREQ, tei_id_chk_req_net},
|
|
|
|
{ST_TEI_IDVERIFY, EV_TIMER, tei_id_ver_tout_net},
|
|
|
|
{ST_TEI_IDVERIFY, EV_CHKRESP, tei_id_chk_resp},
|
|
|
|
};
|
|
|
|
|
|
|
|
static void
|
|
|
|
tei_ph_data_ind(struct teimgr *tm, u_int mt, u_char *dp, int len)
|
|
|
|
{
|
|
|
|
if (test_bit(FLG_FIXED_TEI, &tm->l2->flag))
|
|
|
|
return;
|
|
|
|
if (*debug & DEBUG_L2_TEI)
|
|
|
|
tm->tei_m.printdebug(&tm->tei_m, "tei handler mt %x", mt);
|
|
|
|
if (mt == ID_ASSIGNED)
|
|
|
|
mISDN_FsmEvent(&tm->tei_m, EV_ASSIGN, dp);
|
|
|
|
else if (mt == ID_DENIED)
|
|
|
|
mISDN_FsmEvent(&tm->tei_m, EV_DENIED, dp);
|
|
|
|
else if (mt == ID_CHK_REQ)
|
|
|
|
mISDN_FsmEvent(&tm->tei_m, EV_CHKREQ, dp);
|
|
|
|
else if (mt == ID_REMOVE)
|
|
|
|
mISDN_FsmEvent(&tm->tei_m, EV_REMOVE, dp);
|
|
|
|
else if (mt == ID_VERIFY)
|
|
|
|
mISDN_FsmEvent(&tm->tei_m, EV_VERIFY, dp);
|
|
|
|
else if (mt == ID_CHK_RES)
|
|
|
|
mISDN_FsmEvent(&tm->tei_m, EV_CHKRESP, dp);
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct layer2 *
|
2009-05-25 01:50:02 -06:00
|
|
|
create_new_tei(struct manager *mgr, int tei, int sapi)
|
2008-07-26 17:54:58 -06:00
|
|
|
{
|
|
|
|
u_long opt = 0;
|
|
|
|
u_long flags;
|
|
|
|
int id;
|
|
|
|
struct layer2 *l2;
|
|
|
|
|
|
|
|
if (!mgr->up)
|
|
|
|
return NULL;
|
2009-05-25 01:50:02 -06:00
|
|
|
if ((tei >= 0) && (tei < 64))
|
2008-07-26 17:54:58 -06:00
|
|
|
test_and_set_bit(OPTION_L2_FIXEDTEI, &opt);
|
|
|
|
if (mgr->ch.st->dev->Dprotocols
|
|
|
|
& ((1 << ISDN_P_TE_E1) | (1 << ISDN_P_NT_E1)))
|
|
|
|
test_and_set_bit(OPTION_L2_PMX, &opt);
|
2009-05-25 01:50:02 -06:00
|
|
|
l2 = create_l2(mgr->up, ISDN_P_LAPD_NT, opt, tei, sapi);
|
2008-07-26 17:54:58 -06:00
|
|
|
if (!l2) {
|
|
|
|
printk(KERN_WARNING "%s:no memory for layer2\n", __func__);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
l2->tm = kzalloc(sizeof(struct teimgr), GFP_KERNEL);
|
|
|
|
if (!l2->tm) {
|
|
|
|
kfree(l2);
|
|
|
|
printk(KERN_WARNING "%s:no memory for teimgr\n", __func__);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
l2->tm->mgr = mgr;
|
|
|
|
l2->tm->l2 = l2;
|
|
|
|
l2->tm->tei_m.debug = *debug & DEBUG_L2_TEIFSM;
|
|
|
|
l2->tm->tei_m.userdata = l2->tm;
|
|
|
|
l2->tm->tei_m.printdebug = tei_debug;
|
|
|
|
l2->tm->tei_m.fsm = &teifsmn;
|
|
|
|
l2->tm->tei_m.state = ST_TEI_NOP;
|
|
|
|
l2->tm->tval = 2000; /* T202 2 sec */
|
|
|
|
mISDN_FsmInitTimer(&l2->tm->tei_m, &l2->tm->timer);
|
|
|
|
write_lock_irqsave(&mgr->lock, flags);
|
|
|
|
id = get_free_id(mgr);
|
|
|
|
list_add_tail(&l2->list, &mgr->layer2);
|
|
|
|
write_unlock_irqrestore(&mgr->lock, flags);
|
|
|
|
if (id < 0) {
|
|
|
|
l2->ch.ctrl(&l2->ch, CLOSE_CHANNEL, NULL);
|
|
|
|
printk(KERN_WARNING "%s:no free id\n", __func__);
|
|
|
|
return NULL;
|
|
|
|
} else {
|
|
|
|
l2->ch.nr = id;
|
|
|
|
__add_layer2(&l2->ch, mgr->ch.st);
|
|
|
|
l2->ch.recv = mgr->ch.recv;
|
|
|
|
l2->ch.peer = mgr->ch.peer;
|
|
|
|
l2->ch.ctrl(&l2->ch, OPEN_CHANNEL, NULL);
|
|
|
|
}
|
|
|
|
return l2;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
new_tei_req(struct manager *mgr, u_char *dp)
|
|
|
|
{
|
|
|
|
int tei, ri;
|
|
|
|
struct layer2 *l2;
|
|
|
|
|
|
|
|
ri = dp[0] << 8;
|
|
|
|
ri += dp[1];
|
|
|
|
if (!mgr->up)
|
|
|
|
goto denied;
|
2009-05-25 01:50:02 -06:00
|
|
|
if (!(dp[3] & 1)) /* Extension bit != 1 */
|
|
|
|
goto denied;
|
|
|
|
if (dp[3] != 0xff)
|
|
|
|
tei = dp[3] >> 1; /* 3GPP TS 08.56 6.1.11.2 */
|
|
|
|
else
|
|
|
|
tei = get_free_tei(mgr);
|
2008-07-26 17:54:58 -06:00
|
|
|
if (tei < 0) {
|
|
|
|
printk(KERN_WARNING "%s:No free tei\n", __func__);
|
|
|
|
goto denied;
|
|
|
|
}
|
2009-05-25 01:50:02 -06:00
|
|
|
l2 = create_new_tei(mgr, tei, CTRL_SAPI);
|
2008-07-26 17:54:58 -06:00
|
|
|
if (!l2)
|
|
|
|
goto denied;
|
|
|
|
else
|
|
|
|
mISDN_FsmEvent(&l2->tm->tei_m, EV_ASSIGN_REQ, dp);
|
|
|
|
return;
|
|
|
|
denied:
|
|
|
|
put_tei_msg(mgr, ID_DENIED, ri, GROUP_TEI);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
ph_data_ind(struct manager *mgr, struct sk_buff *skb)
|
|
|
|
{
|
|
|
|
int ret = -EINVAL;
|
2009-06-09 06:38:39 -06:00
|
|
|
struct layer2 *l2, *nl2;
|
2008-07-26 17:54:58 -06:00
|
|
|
u_char mt;
|
|
|
|
|
|
|
|
if (skb->len < 8) {
|
|
|
|
if (*debug & DEBUG_L2_TEI)
|
|
|
|
printk(KERN_DEBUG "%s: short mgr frame %d/8\n",
|
|
|
|
__func__, skb->len);
|
|
|
|
goto done;
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((skb->data[0] >> 2) != TEI_SAPI) /* not for us */
|
|
|
|
goto done;
|
|
|
|
if (skb->data[0] & 1) /* EA0 formal error */
|
|
|
|
goto done;
|
|
|
|
if (!(skb->data[1] & 1)) /* EA1 formal error */
|
|
|
|
goto done;
|
|
|
|
if ((skb->data[1] >> 1) != GROUP_TEI) /* not for us */
|
|
|
|
goto done;
|
|
|
|
if ((skb->data[2] & 0xef) != UI) /* not UI */
|
|
|
|
goto done;
|
|
|
|
if (skb->data[3] != TEI_ENTITY_ID) /* not tei entity */
|
|
|
|
goto done;
|
|
|
|
mt = skb->data[6];
|
|
|
|
switch (mt) {
|
|
|
|
case ID_REQUEST:
|
|
|
|
case ID_CHK_RES:
|
|
|
|
case ID_VERIFY:
|
|
|
|
if (!test_bit(MGR_OPT_NETWORK, &mgr->options))
|
|
|
|
goto done;
|
|
|
|
break;
|
|
|
|
case ID_ASSIGNED:
|
|
|
|
case ID_DENIED:
|
|
|
|
case ID_CHK_REQ:
|
|
|
|
case ID_REMOVE:
|
|
|
|
if (test_bit(MGR_OPT_NETWORK, &mgr->options))
|
|
|
|
goto done;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
goto done;
|
|
|
|
}
|
|
|
|
ret = 0;
|
|
|
|
if (mt == ID_REQUEST) {
|
|
|
|
new_tei_req(mgr, &skb->data[4]);
|
|
|
|
goto done;
|
|
|
|
}
|
2009-06-09 06:38:39 -06:00
|
|
|
list_for_each_entry_safe(l2, nl2, &mgr->layer2, list) {
|
2008-07-26 17:54:58 -06:00
|
|
|
tei_ph_data_ind(l2->tm, mt, &skb->data[4], skb->len - 4);
|
|
|
|
}
|
|
|
|
done:
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
l2_tei(struct layer2 *l2, u_int cmd, u_long arg)
|
|
|
|
{
|
|
|
|
struct teimgr *tm = l2->tm;
|
|
|
|
|
|
|
|
if (test_bit(FLG_FIXED_TEI, &l2->flag))
|
|
|
|
return 0;
|
|
|
|
if (*debug & DEBUG_L2_TEI)
|
|
|
|
printk(KERN_DEBUG "%s: cmd(%x)\n", __func__, cmd);
|
|
|
|
switch (cmd) {
|
|
|
|
case MDL_ASSIGN_IND:
|
|
|
|
mISDN_FsmEvent(&tm->tei_m, EV_IDREQ, NULL);
|
|
|
|
break;
|
|
|
|
case MDL_ERROR_IND:
|
|
|
|
if (test_bit(MGR_OPT_NETWORK, &tm->mgr->options))
|
|
|
|
mISDN_FsmEvent(&tm->tei_m, EV_CHKREQ, &l2->tei);
|
|
|
|
if (test_bit(MGR_OPT_USER, &tm->mgr->options))
|
|
|
|
mISDN_FsmEvent(&tm->tei_m, EV_VERIFY, NULL);
|
|
|
|
break;
|
|
|
|
case MDL_STATUS_UP_IND:
|
|
|
|
if (test_bit(MGR_OPT_NETWORK, &tm->mgr->options))
|
|
|
|
mISDN_FsmEvent(&tm->mgr->deact, EV_ACTIVATE, NULL);
|
|
|
|
break;
|
|
|
|
case MDL_STATUS_DOWN_IND:
|
|
|
|
if (test_bit(MGR_OPT_NETWORK, &tm->mgr->options))
|
|
|
|
mISDN_FsmEvent(&tm->mgr->deact, EV_DEACTIVATE, NULL);
|
|
|
|
break;
|
|
|
|
case MDL_STATUS_UI_IND:
|
|
|
|
if (test_bit(MGR_OPT_NETWORK, &tm->mgr->options))
|
|
|
|
mISDN_FsmEvent(&tm->mgr->deact, EV_UI, NULL);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
2008-07-27 10:32:50 -06:00
|
|
|
TEIrelease(struct layer2 *l2)
|
2008-07-26 17:54:58 -06:00
|
|
|
{
|
|
|
|
struct teimgr *tm = l2->tm;
|
|
|
|
u_long flags;
|
|
|
|
|
|
|
|
mISDN_FsmDelTimer(&tm->timer, 1);
|
|
|
|
write_lock_irqsave(&tm->mgr->lock, flags);
|
|
|
|
list_del(&l2->list);
|
|
|
|
write_unlock_irqrestore(&tm->mgr->lock, flags);
|
|
|
|
l2->tm = NULL;
|
|
|
|
kfree(tm);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
create_teimgr(struct manager *mgr, struct channel_req *crq)
|
|
|
|
{
|
|
|
|
struct layer2 *l2;
|
|
|
|
u_long opt = 0;
|
|
|
|
u_long flags;
|
|
|
|
int id;
|
|
|
|
|
|
|
|
if (*debug & DEBUG_L2_TEI)
|
|
|
|
printk(KERN_DEBUG "%s: %s proto(%x) adr(%d %d %d %d)\n",
|
2008-08-15 16:04:33 -06:00
|
|
|
__func__, dev_name(&mgr->ch.st->dev->dev),
|
|
|
|
crq->protocol, crq->adr.dev, crq->adr.channel,
|
|
|
|
crq->adr.sapi, crq->adr.tei);
|
2008-07-26 17:54:58 -06:00
|
|
|
if (crq->adr.tei > GROUP_TEI)
|
|
|
|
return -EINVAL;
|
|
|
|
if (crq->adr.tei < 64)
|
|
|
|
test_and_set_bit(OPTION_L2_FIXEDTEI, &opt);
|
|
|
|
if (crq->adr.tei == 0)
|
|
|
|
test_and_set_bit(OPTION_L2_PTP, &opt);
|
|
|
|
if (test_bit(MGR_OPT_NETWORK, &mgr->options)) {
|
|
|
|
if (crq->protocol == ISDN_P_LAPD_TE)
|
|
|
|
return -EPROTONOSUPPORT;
|
|
|
|
if ((crq->adr.tei != 0) && (crq->adr.tei != 127))
|
|
|
|
return -EINVAL;
|
|
|
|
if (mgr->up) {
|
|
|
|
printk(KERN_WARNING
|
|
|
|
"%s: only one network manager is allowed\n",
|
|
|
|
__func__);
|
|
|
|
return -EBUSY;
|
|
|
|
}
|
|
|
|
} else if (test_bit(MGR_OPT_USER, &mgr->options)) {
|
|
|
|
if (crq->protocol == ISDN_P_LAPD_NT)
|
|
|
|
return -EPROTONOSUPPORT;
|
|
|
|
if ((crq->adr.tei >= 64) && (crq->adr.tei < GROUP_TEI))
|
|
|
|
return -EINVAL; /* dyn tei */
|
|
|
|
} else {
|
|
|
|
if (crq->protocol == ISDN_P_LAPD_NT)
|
|
|
|
test_and_set_bit(MGR_OPT_NETWORK, &mgr->options);
|
|
|
|
if (crq->protocol == ISDN_P_LAPD_TE)
|
|
|
|
test_and_set_bit(MGR_OPT_USER, &mgr->options);
|
|
|
|
}
|
|
|
|
if (mgr->ch.st->dev->Dprotocols
|
|
|
|
& ((1 << ISDN_P_TE_E1) | (1 << ISDN_P_NT_E1)))
|
|
|
|
test_and_set_bit(OPTION_L2_PMX, &opt);
|
|
|
|
if ((crq->protocol == ISDN_P_LAPD_NT) && (crq->adr.tei == 127)) {
|
|
|
|
mgr->up = crq->ch;
|
|
|
|
id = DL_INFO_L2_CONNECT;
|
|
|
|
teiup_create(mgr, DL_INFORMATION_IND, sizeof(id), &id);
|
|
|
|
crq->ch = NULL;
|
|
|
|
if (!list_empty(&mgr->layer2)) {
|
|
|
|
read_lock_irqsave(&mgr->lock, flags);
|
|
|
|
list_for_each_entry(l2, &mgr->layer2, list) {
|
|
|
|
l2->up = mgr->up;
|
|
|
|
l2->ch.ctrl(&l2->ch, OPEN_CHANNEL, NULL);
|
|
|
|
}
|
|
|
|
read_unlock_irqrestore(&mgr->lock, flags);
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
2009-05-25 01:50:02 -06:00
|
|
|
l2 = create_l2(crq->ch, crq->protocol, opt,
|
|
|
|
crq->adr.tei, crq->adr.sapi);
|
2008-07-26 17:54:58 -06:00
|
|
|
if (!l2)
|
|
|
|
return -ENOMEM;
|
|
|
|
l2->tm = kzalloc(sizeof(struct teimgr), GFP_KERNEL);
|
|
|
|
if (!l2->tm) {
|
|
|
|
kfree(l2);
|
|
|
|
printk(KERN_ERR "kmalloc teimgr failed\n");
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
l2->tm->mgr = mgr;
|
|
|
|
l2->tm->l2 = l2;
|
|
|
|
l2->tm->tei_m.debug = *debug & DEBUG_L2_TEIFSM;
|
|
|
|
l2->tm->tei_m.userdata = l2->tm;
|
|
|
|
l2->tm->tei_m.printdebug = tei_debug;
|
|
|
|
if (crq->protocol == ISDN_P_LAPD_TE) {
|
|
|
|
l2->tm->tei_m.fsm = &teifsmu;
|
|
|
|
l2->tm->tei_m.state = ST_TEI_NOP;
|
|
|
|
l2->tm->tval = 1000; /* T201 1 sec */
|
|
|
|
} else {
|
|
|
|
l2->tm->tei_m.fsm = &teifsmn;
|
|
|
|
l2->tm->tei_m.state = ST_TEI_NOP;
|
|
|
|
l2->tm->tval = 2000; /* T202 2 sec */
|
|
|
|
}
|
|
|
|
mISDN_FsmInitTimer(&l2->tm->tei_m, &l2->tm->timer);
|
|
|
|
write_lock_irqsave(&mgr->lock, flags);
|
|
|
|
id = get_free_id(mgr);
|
|
|
|
list_add_tail(&l2->list, &mgr->layer2);
|
|
|
|
write_unlock_irqrestore(&mgr->lock, flags);
|
|
|
|
if (id < 0) {
|
|
|
|
l2->ch.ctrl(&l2->ch, CLOSE_CHANNEL, NULL);
|
|
|
|
} else {
|
|
|
|
l2->ch.nr = id;
|
|
|
|
l2->up->nr = id;
|
|
|
|
crq->ch = &l2->ch;
|
|
|
|
id = 0;
|
|
|
|
}
|
|
|
|
return id;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
mgr_send(struct mISDNchannel *ch, struct sk_buff *skb)
|
|
|
|
{
|
|
|
|
struct manager *mgr;
|
|
|
|
struct mISDNhead *hh = mISDN_HEAD_P(skb);
|
|
|
|
int ret = -EINVAL;
|
|
|
|
|
|
|
|
mgr = container_of(ch, struct manager, ch);
|
|
|
|
if (*debug & DEBUG_L2_RECV)
|
|
|
|
printk(KERN_DEBUG "%s: prim(%x) id(%x)\n",
|
|
|
|
__func__, hh->prim, hh->id);
|
|
|
|
switch (hh->prim) {
|
|
|
|
case PH_DATA_IND:
|
|
|
|
mISDN_FsmEvent(&mgr->deact, EV_UI, NULL);
|
|
|
|
ret = ph_data_ind(mgr, skb);
|
|
|
|
break;
|
|
|
|
case PH_DATA_CNF:
|
|
|
|
do_ack(mgr, hh->id);
|
|
|
|
ret = 0;
|
|
|
|
break;
|
|
|
|
case PH_ACTIVATE_IND:
|
|
|
|
test_and_set_bit(MGR_PH_ACTIVE, &mgr->options);
|
|
|
|
mISDN_FsmEvent(&mgr->deact, EV_ACTIVATE_IND, NULL);
|
|
|
|
do_send(mgr);
|
|
|
|
ret = 0;
|
|
|
|
break;
|
|
|
|
case PH_DEACTIVATE_IND:
|
|
|
|
test_and_clear_bit(MGR_PH_ACTIVE, &mgr->options);
|
|
|
|
mISDN_FsmEvent(&mgr->deact, EV_DEACTIVATE_IND, NULL);
|
|
|
|
ret = 0;
|
|
|
|
break;
|
|
|
|
case DL_UNITDATA_REQ:
|
|
|
|
return dl_unit_data(mgr, skb);
|
|
|
|
}
|
|
|
|
if (!ret)
|
|
|
|
dev_kfree_skb(skb);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
free_teimanager(struct manager *mgr)
|
|
|
|
{
|
|
|
|
struct layer2 *l2, *nl2;
|
|
|
|
|
2009-05-22 05:04:48 -06:00
|
|
|
test_and_clear_bit(OPTION_L1_HOLD, &mgr->options);
|
2008-07-26 17:54:58 -06:00
|
|
|
if (test_bit(MGR_OPT_NETWORK, &mgr->options)) {
|
|
|
|
/* not locked lock is taken in release tei */
|
|
|
|
mgr->up = NULL;
|
|
|
|
if (test_bit(OPTION_L2_CLEANUP, &mgr->options)) {
|
|
|
|
list_for_each_entry_safe(l2, nl2, &mgr->layer2, list) {
|
|
|
|
put_tei_msg(mgr, ID_REMOVE, 0, l2->tei);
|
|
|
|
mutex_lock(&mgr->ch.st->lmutex);
|
|
|
|
list_del(&l2->ch.list);
|
|
|
|
mutex_unlock(&mgr->ch.st->lmutex);
|
|
|
|
l2->ch.ctrl(&l2->ch, CLOSE_CHANNEL, NULL);
|
|
|
|
}
|
|
|
|
test_and_clear_bit(MGR_OPT_NETWORK, &mgr->options);
|
|
|
|
} else {
|
|
|
|
list_for_each_entry_safe(l2, nl2, &mgr->layer2, list) {
|
|
|
|
l2->up = NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (test_bit(MGR_OPT_USER, &mgr->options)) {
|
|
|
|
if (list_empty(&mgr->layer2))
|
|
|
|
test_and_clear_bit(MGR_OPT_USER, &mgr->options);
|
|
|
|
}
|
|
|
|
mgr->ch.st->dev->D.ctrl(&mgr->ch.st->dev->D, CLOSE_CHANNEL, NULL);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
ctrl_teimanager(struct manager *mgr, void *arg)
|
|
|
|
{
|
|
|
|
/* currently we only have one option */
|
2009-05-22 05:04:48 -06:00
|
|
|
int *val = (int *)arg;
|
|
|
|
int ret = 0;
|
|
|
|
|
|
|
|
switch (val[0]) {
|
|
|
|
case IMCLEAR_L2:
|
|
|
|
if (val[1])
|
|
|
|
test_and_set_bit(OPTION_L2_CLEANUP, &mgr->options);
|
|
|
|
else
|
|
|
|
test_and_clear_bit(OPTION_L2_CLEANUP, &mgr->options);
|
|
|
|
break;
|
|
|
|
case IMHOLD_L1:
|
|
|
|
if (val[1])
|
|
|
|
test_and_set_bit(OPTION_L1_HOLD, &mgr->options);
|
|
|
|
else
|
|
|
|
test_and_clear_bit(OPTION_L1_HOLD, &mgr->options);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
ret = -EINVAL;
|
|
|
|
}
|
|
|
|
return ret;
|
2008-07-26 17:54:58 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/* This function does create a L2 for fixed TEI in NT Mode */
|
|
|
|
static int
|
|
|
|
check_data(struct manager *mgr, struct sk_buff *skb)
|
|
|
|
{
|
|
|
|
struct mISDNhead *hh = mISDN_HEAD_P(skb);
|
2009-05-25 01:50:02 -06:00
|
|
|
int ret, tei, sapi;
|
2008-07-26 17:54:58 -06:00
|
|
|
struct layer2 *l2;
|
|
|
|
|
|
|
|
if (*debug & DEBUG_L2_CTRL)
|
|
|
|
printk(KERN_DEBUG "%s: prim(%x) id(%x)\n",
|
|
|
|
__func__, hh->prim, hh->id);
|
|
|
|
if (test_bit(MGR_OPT_USER, &mgr->options))
|
|
|
|
return -ENOTCONN;
|
|
|
|
if (hh->prim != PH_DATA_IND)
|
|
|
|
return -ENOTCONN;
|
|
|
|
if (skb->len != 3)
|
|
|
|
return -ENOTCONN;
|
2009-05-25 01:50:02 -06:00
|
|
|
if (skb->data[0] & 3) /* EA0 and CR must be 0 */
|
|
|
|
return -EINVAL;
|
|
|
|
sapi = skb->data[0] >> 2;
|
2008-07-26 17:54:58 -06:00
|
|
|
if (!(skb->data[1] & 1)) /* invalid EA1 */
|
|
|
|
return -EINVAL;
|
2009-05-25 01:50:02 -06:00
|
|
|
tei = skb->data[1] >> 1;
|
2008-07-26 17:54:58 -06:00
|
|
|
if (tei > 63) /* not a fixed tei */
|
|
|
|
return -ENOTCONN;
|
|
|
|
if ((skb->data[2] & ~0x10) != SABME)
|
|
|
|
return -ENOTCONN;
|
|
|
|
/* We got a SABME for a fixed TEI */
|
2009-05-22 05:04:51 -06:00
|
|
|
if (*debug & DEBUG_L2_CTRL)
|
|
|
|
printk(KERN_DEBUG "%s: SABME sapi(%d) tei(%d)\n",
|
|
|
|
__func__, sapi, tei);
|
2009-05-25 01:50:02 -06:00
|
|
|
l2 = create_new_tei(mgr, tei, sapi);
|
2009-05-22 05:04:51 -06:00
|
|
|
if (!l2) {
|
|
|
|
if (*debug & DEBUG_L2_CTRL)
|
|
|
|
printk(KERN_DEBUG "%s: failed to create new tei\n",
|
|
|
|
__func__);
|
2008-07-26 17:54:58 -06:00
|
|
|
return -ENOMEM;
|
2009-05-22 05:04:51 -06:00
|
|
|
}
|
2008-07-26 17:54:58 -06:00
|
|
|
ret = l2->ch.send(&l2->ch, skb);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
delete_teimanager(struct mISDNchannel *ch)
|
|
|
|
{
|
|
|
|
struct manager *mgr;
|
|
|
|
struct layer2 *l2, *nl2;
|
|
|
|
|
|
|
|
mgr = container_of(ch, struct manager, ch);
|
|
|
|
/* not locked lock is taken in release tei */
|
|
|
|
list_for_each_entry_safe(l2, nl2, &mgr->layer2, list) {
|
|
|
|
mutex_lock(&mgr->ch.st->lmutex);
|
|
|
|
list_del(&l2->ch.list);
|
|
|
|
mutex_unlock(&mgr->ch.st->lmutex);
|
|
|
|
l2->ch.ctrl(&l2->ch, CLOSE_CHANNEL, NULL);
|
|
|
|
}
|
|
|
|
list_del(&mgr->ch.list);
|
|
|
|
list_del(&mgr->bcast.list);
|
|
|
|
skb_queue_purge(&mgr->sendq);
|
|
|
|
kfree(mgr);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
mgr_ctrl(struct mISDNchannel *ch, u_int cmd, void *arg)
|
|
|
|
{
|
|
|
|
struct manager *mgr;
|
|
|
|
int ret = -EINVAL;
|
|
|
|
|
|
|
|
mgr = container_of(ch, struct manager, ch);
|
|
|
|
if (*debug & DEBUG_L2_CTRL)
|
|
|
|
printk(KERN_DEBUG "%s(%x, %p)\n", __func__, cmd, arg);
|
|
|
|
switch (cmd) {
|
|
|
|
case OPEN_CHANNEL:
|
|
|
|
ret = create_teimgr(mgr, arg);
|
|
|
|
break;
|
|
|
|
case CLOSE_CHANNEL:
|
|
|
|
ret = free_teimanager(mgr);
|
|
|
|
break;
|
|
|
|
case CONTROL_CHANNEL:
|
|
|
|
ret = ctrl_teimanager(mgr, arg);
|
|
|
|
break;
|
|
|
|
case CHECK_DATA:
|
|
|
|
ret = check_data(mgr, arg);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
mgr_bcast(struct mISDNchannel *ch, struct sk_buff *skb)
|
|
|
|
{
|
|
|
|
struct manager *mgr = container_of(ch, struct manager, bcast);
|
|
|
|
struct mISDNhead *hh = mISDN_HEAD_P(skb);
|
|
|
|
struct sk_buff *cskb = NULL;
|
|
|
|
struct layer2 *l2;
|
|
|
|
u_long flags;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
read_lock_irqsave(&mgr->lock, flags);
|
|
|
|
list_for_each_entry(l2, &mgr->layer2, list) {
|
|
|
|
if ((hh->id & MISDN_ID_SAPI_MASK) ==
|
|
|
|
(l2->ch.addr & MISDN_ID_SAPI_MASK)) {
|
|
|
|
if (list_is_last(&l2->list, &mgr->layer2)) {
|
|
|
|
cskb = skb;
|
|
|
|
skb = NULL;
|
|
|
|
} else {
|
|
|
|
if (!cskb)
|
|
|
|
cskb = skb_copy(skb, GFP_KERNEL);
|
|
|
|
}
|
|
|
|
if (cskb) {
|
|
|
|
ret = l2->ch.send(&l2->ch, cskb);
|
|
|
|
if (ret) {
|
|
|
|
if (*debug & DEBUG_SEND_ERR)
|
|
|
|
printk(KERN_DEBUG
|
|
|
|
"%s ch%d prim(%x) addr(%x)"
|
|
|
|
" err %d\n",
|
|
|
|
__func__, l2->ch.nr,
|
|
|
|
hh->prim, l2->ch.addr, ret);
|
|
|
|
} else
|
|
|
|
cskb = NULL;
|
|
|
|
} else {
|
|
|
|
printk(KERN_WARNING "%s ch%d addr %x no mem\n",
|
|
|
|
__func__, ch->nr, ch->addr);
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
out:
|
|
|
|
read_unlock_irqrestore(&mgr->lock, flags);
|
|
|
|
if (cskb)
|
|
|
|
dev_kfree_skb(cskb);
|
|
|
|
if (skb)
|
|
|
|
dev_kfree_skb(skb);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
mgr_bcast_ctrl(struct mISDNchannel *ch, u_int cmd, void *arg)
|
|
|
|
{
|
|
|
|
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
create_teimanager(struct mISDNdevice *dev)
|
|
|
|
{
|
|
|
|
struct manager *mgr;
|
|
|
|
|
|
|
|
mgr = kzalloc(sizeof(struct manager), GFP_KERNEL);
|
|
|
|
if (!mgr)
|
|
|
|
return -ENOMEM;
|
|
|
|
INIT_LIST_HEAD(&mgr->layer2);
|
2008-12-12 22:21:57 -07:00
|
|
|
rwlock_init(&mgr->lock);
|
2008-07-26 17:54:58 -06:00
|
|
|
skb_queue_head_init(&mgr->sendq);
|
|
|
|
mgr->nextid = 1;
|
|
|
|
mgr->lastid = MISDN_ID_NONE;
|
|
|
|
mgr->ch.send = mgr_send;
|
|
|
|
mgr->ch.ctrl = mgr_ctrl;
|
|
|
|
mgr->ch.st = dev->D.st;
|
|
|
|
set_channel_address(&mgr->ch, TEI_SAPI, GROUP_TEI);
|
|
|
|
add_layer2(&mgr->ch, dev->D.st);
|
|
|
|
mgr->bcast.send = mgr_bcast;
|
|
|
|
mgr->bcast.ctrl = mgr_bcast_ctrl;
|
|
|
|
mgr->bcast.st = dev->D.st;
|
|
|
|
set_channel_address(&mgr->bcast, 0, GROUP_TEI);
|
|
|
|
add_layer2(&mgr->bcast, dev->D.st);
|
|
|
|
mgr->deact.debug = *debug & DEBUG_MANAGER;
|
|
|
|
mgr->deact.userdata = mgr;
|
|
|
|
mgr->deact.printdebug = da_debug;
|
|
|
|
mgr->deact.fsm = &deactfsm;
|
|
|
|
mgr->deact.state = ST_L1_DEACT;
|
|
|
|
mISDN_FsmInitTimer(&mgr->deact, &mgr->datimer);
|
|
|
|
dev->teimgr = &mgr->ch;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int TEIInit(u_int *deb)
|
|
|
|
{
|
|
|
|
debug = deb;
|
|
|
|
teifsmu.state_count = TEI_STATE_COUNT;
|
|
|
|
teifsmu.event_count = TEI_EVENT_COUNT;
|
|
|
|
teifsmu.strEvent = strTeiEvent;
|
|
|
|
teifsmu.strState = strTeiState;
|
|
|
|
mISDN_FsmNew(&teifsmu, TeiFnListUser, ARRAY_SIZE(TeiFnListUser));
|
|
|
|
teifsmn.state_count = TEI_STATE_COUNT;
|
|
|
|
teifsmn.event_count = TEI_EVENT_COUNT;
|
|
|
|
teifsmn.strEvent = strTeiEvent;
|
|
|
|
teifsmn.strState = strTeiState;
|
|
|
|
mISDN_FsmNew(&teifsmn, TeiFnListNet, ARRAY_SIZE(TeiFnListNet));
|
|
|
|
deactfsm.state_count = DEACT_STATE_COUNT;
|
|
|
|
deactfsm.event_count = DEACT_EVENT_COUNT;
|
|
|
|
deactfsm.strEvent = strDeactEvent;
|
|
|
|
deactfsm.strState = strDeactState;
|
|
|
|
mISDN_FsmNew(&deactfsm, DeactFnList, ARRAY_SIZE(DeactFnList));
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
void TEIFree(void)
|
|
|
|
{
|
|
|
|
mISDN_FsmFree(&teifsmu);
|
|
|
|
mISDN_FsmFree(&teifsmn);
|
|
|
|
mISDN_FsmFree(&deactfsm);
|
|
|
|
}
|