2005-04-16 22:20:36 +00:00
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/*********************************************************************
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*
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* Filename: iriap_event.c
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* Version: 0.1
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* Description: IAP Finite State Machine
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* Status: Experimental.
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* Author: Dag Brattli <dagb@cs.uit.no>
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* Created at: Thu Aug 21 00:02:07 1997
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* Modified at: Wed Mar 1 11:28:34 2000
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* Modified by: Dag Brattli <dagb@cs.uit.no>
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*
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* Copyright (c) 1997, 1999-2000 Dag Brattli <dagb@cs.uit.no>,
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* All Rights Reserved.
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* Copyright (c) 2000-2003 Jean Tourrilhes <jt@hpl.hp.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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2007-10-19 21:21:04 +00:00
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* Neither Dag Brattli nor University of Tromsø admit liability nor
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2005-04-16 22:20:36 +00:00
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* provide warranty for any of this software. This material is
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* provided "AS-IS" and at no charge.
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*
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********************************************************************/
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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 08:04:11 +00:00
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#include <linux/slab.h>
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2005-04-16 22:20:36 +00:00
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#include <net/irda/irda.h>
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#include <net/irda/irlmp.h>
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#include <net/irda/iriap.h>
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#include <net/irda/iriap_event.h>
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static void state_s_disconnect (struct iriap_cb *self, IRIAP_EVENT event,
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struct sk_buff *skb);
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static void state_s_connecting (struct iriap_cb *self, IRIAP_EVENT event,
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struct sk_buff *skb);
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static void state_s_call (struct iriap_cb *self, IRIAP_EVENT event,
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struct sk_buff *skb);
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static void state_s_make_call (struct iriap_cb *self, IRIAP_EVENT event,
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struct sk_buff *skb);
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static void state_s_calling (struct iriap_cb *self, IRIAP_EVENT event,
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struct sk_buff *skb);
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static void state_s_outstanding (struct iriap_cb *self, IRIAP_EVENT event,
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struct sk_buff *skb);
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static void state_s_replying (struct iriap_cb *self, IRIAP_EVENT event,
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struct sk_buff *skb);
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static void state_s_wait_for_call(struct iriap_cb *self, IRIAP_EVENT event,
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struct sk_buff *skb);
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static void state_s_wait_active (struct iriap_cb *self, IRIAP_EVENT event,
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struct sk_buff *skb);
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static void state_r_disconnect (struct iriap_cb *self, IRIAP_EVENT event,
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struct sk_buff *skb);
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static void state_r_call (struct iriap_cb *self, IRIAP_EVENT event,
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struct sk_buff *skb);
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static void state_r_waiting (struct iriap_cb *self, IRIAP_EVENT event,
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struct sk_buff *skb);
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static void state_r_wait_active (struct iriap_cb *self, IRIAP_EVENT event,
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struct sk_buff *skb);
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static void state_r_receiving (struct iriap_cb *self, IRIAP_EVENT event,
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struct sk_buff *skb);
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static void state_r_execute (struct iriap_cb *self, IRIAP_EVENT event,
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struct sk_buff *skb);
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static void state_r_returning (struct iriap_cb *self, IRIAP_EVENT event,
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struct sk_buff *skb);
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static void (*iriap_state[])(struct iriap_cb *self, IRIAP_EVENT event,
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struct sk_buff *skb) = {
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/* Client FSM */
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state_s_disconnect,
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state_s_connecting,
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state_s_call,
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/* S-Call FSM */
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state_s_make_call,
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state_s_calling,
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state_s_outstanding,
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state_s_replying,
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state_s_wait_for_call,
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state_s_wait_active,
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/* Server FSM */
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state_r_disconnect,
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state_r_call,
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/* R-Connect FSM */
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state_r_waiting,
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state_r_wait_active,
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state_r_receiving,
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state_r_execute,
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state_r_returning,
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};
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void iriap_next_client_state(struct iriap_cb *self, IRIAP_STATE state)
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{
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IRDA_ASSERT(self != NULL, return;);
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IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
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self->client_state = state;
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}
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void iriap_next_call_state(struct iriap_cb *self, IRIAP_STATE state)
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{
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IRDA_ASSERT(self != NULL, return;);
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IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
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self->call_state = state;
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}
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void iriap_next_server_state(struct iriap_cb *self, IRIAP_STATE state)
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{
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IRDA_ASSERT(self != NULL, return;);
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IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
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self->server_state = state;
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}
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void iriap_next_r_connect_state(struct iriap_cb *self, IRIAP_STATE state)
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{
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IRDA_ASSERT(self != NULL, return;);
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IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
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self->r_connect_state = state;
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}
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void iriap_do_client_event(struct iriap_cb *self, IRIAP_EVENT event,
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struct sk_buff *skb)
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{
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IRDA_ASSERT(self != NULL, return;);
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IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
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(*iriap_state[ self->client_state]) (self, event, skb);
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}
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void iriap_do_call_event(struct iriap_cb *self, IRIAP_EVENT event,
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struct sk_buff *skb)
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{
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IRDA_ASSERT(self != NULL, return;);
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IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
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(*iriap_state[ self->call_state]) (self, event, skb);
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}
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void iriap_do_server_event(struct iriap_cb *self, IRIAP_EVENT event,
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struct sk_buff *skb)
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{
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IRDA_ASSERT(self != NULL, return;);
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IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
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(*iriap_state[ self->server_state]) (self, event, skb);
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}
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void iriap_do_r_connect_event(struct iriap_cb *self, IRIAP_EVENT event,
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struct sk_buff *skb)
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{
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IRDA_ASSERT(self != NULL, return;);
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IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
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(*iriap_state[ self->r_connect_state]) (self, event, skb);
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}
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/*
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* Function state_s_disconnect (event, skb)
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*
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* S-Disconnect, The device has no LSAP connection to a particular
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* remote device.
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*/
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static void state_s_disconnect(struct iriap_cb *self, IRIAP_EVENT event,
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struct sk_buff *skb)
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{
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IRDA_ASSERT(self != NULL, return;);
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IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
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switch (event) {
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case IAP_CALL_REQUEST_GVBC:
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iriap_next_client_state(self, S_CONNECTING);
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IRDA_ASSERT(self->request_skb == NULL, return;);
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/* Don't forget to refcount it -
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* see iriap_getvaluebyclass_request(). */
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skb_get(skb);
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self->request_skb = skb;
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iriap_connect_request(self);
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break;
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case IAP_LM_DISCONNECT_INDICATION:
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break;
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default:
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2008-03-06 04:47:47 +00:00
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IRDA_DEBUG(0, "%s(), Unknown event %d\n", __func__, event);
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2005-04-16 22:20:36 +00:00
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break;
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}
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}
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/*
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* Function state_s_connecting (self, event, skb)
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*
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* S-Connecting
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*
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*/
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static void state_s_connecting(struct iriap_cb *self, IRIAP_EVENT event,
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struct sk_buff *skb)
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{
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IRDA_ASSERT(self != NULL, return;);
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IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
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switch (event) {
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case IAP_LM_CONNECT_CONFIRM:
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/*
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* Jump to S-Call FSM
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*/
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iriap_do_call_event(self, IAP_CALL_REQUEST, skb);
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/* iriap_call_request(self, 0,0,0); */
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iriap_next_client_state(self, S_CALL);
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break;
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case IAP_LM_DISCONNECT_INDICATION:
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/* Abort calls */
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iriap_next_call_state(self, S_MAKE_CALL);
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iriap_next_client_state(self, S_DISCONNECT);
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break;
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default:
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2008-03-06 04:47:47 +00:00
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IRDA_DEBUG(0, "%s(), Unknown event %d\n", __func__, event);
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2005-04-16 22:20:36 +00:00
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break;
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}
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}
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/*
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* Function state_s_call (self, event, skb)
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*
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* S-Call, The device can process calls to a specific remote
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* device. Whenever the LSAP connection is disconnected, this state
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* catches that event and clears up
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*/
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static void state_s_call(struct iriap_cb *self, IRIAP_EVENT event,
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struct sk_buff *skb)
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{
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IRDA_ASSERT(self != NULL, return;);
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switch (event) {
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case IAP_LM_DISCONNECT_INDICATION:
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/* Abort calls */
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iriap_next_call_state(self, S_MAKE_CALL);
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iriap_next_client_state(self, S_DISCONNECT);
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break;
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default:
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IRDA_DEBUG(0, "state_s_call: Unknown event %d\n", event);
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break;
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}
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}
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/*
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* Function state_s_make_call (event, skb)
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*
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* S-Make-Call
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*
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*/
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static void state_s_make_call(struct iriap_cb *self, IRIAP_EVENT event,
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struct sk_buff *skb)
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{
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struct sk_buff *tx_skb;
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IRDA_ASSERT(self != NULL, return;);
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switch (event) {
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case IAP_CALL_REQUEST:
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/* Already refcounted - see state_s_disconnect() */
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tx_skb = self->request_skb;
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self->request_skb = NULL;
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irlmp_data_request(self->lsap, tx_skb);
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iriap_next_call_state(self, S_OUTSTANDING);
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break;
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default:
|
2008-03-06 04:47:47 +00:00
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IRDA_DEBUG(0, "%s(), Unknown event %d\n", __func__, event);
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2005-04-16 22:20:36 +00:00
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break;
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}
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}
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/*
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* Function state_s_calling (event, skb)
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*
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* S-Calling
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*
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*/
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static void state_s_calling(struct iriap_cb *self, IRIAP_EVENT event,
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struct sk_buff *skb)
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{
|
2008-03-06 04:47:47 +00:00
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IRDA_DEBUG(0, "%s(), Not implemented\n", __func__);
|
2005-04-16 22:20:36 +00:00
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}
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/*
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* Function state_s_outstanding (event, skb)
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*
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* S-Outstanding, The device is waiting for a response to a command
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*
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*/
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static void state_s_outstanding(struct iriap_cb *self, IRIAP_EVENT event,
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struct sk_buff *skb)
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{
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IRDA_ASSERT(self != NULL, return;);
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switch (event) {
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case IAP_RECV_F_LST:
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/*iriap_send_ack(self);*/
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/*LM_Idle_request(idle); */
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|
|
|
|
|
|
iriap_next_call_state(self, S_WAIT_FOR_CALL);
|
|
|
|
break;
|
|
|
|
default:
|
2008-03-06 04:47:47 +00:00
|
|
|
IRDA_DEBUG(0, "%s(), Unknown event %d\n", __func__, event);
|
2005-04-16 22:20:36 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Function state_s_replying (event, skb)
|
|
|
|
*
|
|
|
|
* S-Replying, The device is collecting a multiple part response
|
|
|
|
*/
|
|
|
|
static void state_s_replying(struct iriap_cb *self, IRIAP_EVENT event,
|
|
|
|
struct sk_buff *skb)
|
|
|
|
{
|
2008-03-06 04:47:47 +00:00
|
|
|
IRDA_DEBUG(0, "%s(), Not implemented\n", __func__);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Function state_s_wait_for_call (event, skb)
|
|
|
|
*
|
|
|
|
* S-Wait-for-Call
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
static void state_s_wait_for_call(struct iriap_cb *self, IRIAP_EVENT event,
|
|
|
|
struct sk_buff *skb)
|
|
|
|
{
|
2008-03-06 04:47:47 +00:00
|
|
|
IRDA_DEBUG(0, "%s(), Not implemented\n", __func__);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Function state_s_wait_active (event, skb)
|
|
|
|
*
|
|
|
|
* S-Wait-Active
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
static void state_s_wait_active(struct iriap_cb *self, IRIAP_EVENT event,
|
|
|
|
struct sk_buff *skb)
|
|
|
|
{
|
2008-03-06 04:47:47 +00:00
|
|
|
IRDA_DEBUG(0, "%s(), Not implemented\n", __func__);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/**************************************************************************
|
|
|
|
*
|
|
|
|
* Server FSM
|
|
|
|
*
|
|
|
|
**************************************************************************/
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Function state_r_disconnect (self, event, skb)
|
|
|
|
*
|
|
|
|
* LM-IAS server is disconnected (not processing any requests!)
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
static void state_r_disconnect(struct iriap_cb *self, IRIAP_EVENT event,
|
|
|
|
struct sk_buff *skb)
|
|
|
|
{
|
|
|
|
struct sk_buff *tx_skb;
|
|
|
|
|
|
|
|
switch (event) {
|
|
|
|
case IAP_LM_CONNECT_INDICATION:
|
2006-09-28 03:06:44 +00:00
|
|
|
tx_skb = alloc_skb(LMP_MAX_HEADER, GFP_ATOMIC);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (tx_skb == NULL) {
|
2008-03-06 04:47:47 +00:00
|
|
|
IRDA_WARNING("%s: unable to malloc!\n", __func__);
|
2005-04-16 22:20:36 +00:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Reserve space for MUX_CONTROL and LAP header */
|
|
|
|
skb_reserve(tx_skb, LMP_MAX_HEADER);
|
|
|
|
|
|
|
|
irlmp_connect_response(self->lsap, tx_skb);
|
|
|
|
/*LM_Idle_request(idle); */
|
|
|
|
|
|
|
|
iriap_next_server_state(self, R_CALL);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Jump to R-Connect FSM, we skip R-Waiting since we do not
|
|
|
|
* care about LM_Idle_request()!
|
|
|
|
*/
|
|
|
|
iriap_next_r_connect_state(self, R_RECEIVING);
|
|
|
|
break;
|
|
|
|
default:
|
2008-03-06 04:47:47 +00:00
|
|
|
IRDA_DEBUG(0, "%s(), unknown event %d\n", __func__, event);
|
2005-04-16 22:20:36 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Function state_r_call (self, event, skb)
|
|
|
|
*/
|
|
|
|
static void state_r_call(struct iriap_cb *self, IRIAP_EVENT event,
|
|
|
|
struct sk_buff *skb)
|
|
|
|
{
|
2008-03-06 04:47:47 +00:00
|
|
|
IRDA_DEBUG(4, "%s()\n", __func__);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
switch (event) {
|
|
|
|
case IAP_LM_DISCONNECT_INDICATION:
|
|
|
|
/* Abort call */
|
|
|
|
iriap_next_server_state(self, R_DISCONNECT);
|
|
|
|
iriap_next_r_connect_state(self, R_WAITING);
|
|
|
|
break;
|
|
|
|
default:
|
2008-03-06 04:47:47 +00:00
|
|
|
IRDA_DEBUG(0, "%s(), unknown event!\n", __func__);
|
2005-04-16 22:20:36 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* R-Connect FSM
|
|
|
|
*/
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Function state_r_waiting (self, event, skb)
|
|
|
|
*/
|
|
|
|
static void state_r_waiting(struct iriap_cb *self, IRIAP_EVENT event,
|
|
|
|
struct sk_buff *skb)
|
|
|
|
{
|
2008-03-06 04:47:47 +00:00
|
|
|
IRDA_DEBUG(0, "%s(), Not implemented\n", __func__);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void state_r_wait_active(struct iriap_cb *self, IRIAP_EVENT event,
|
|
|
|
struct sk_buff *skb)
|
|
|
|
{
|
2008-03-06 04:47:47 +00:00
|
|
|
IRDA_DEBUG(0, "%s(), Not implemented\n", __func__);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Function state_r_receiving (self, event, skb)
|
|
|
|
*
|
|
|
|
* We are receiving a command
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
static void state_r_receiving(struct iriap_cb *self, IRIAP_EVENT event,
|
|
|
|
struct sk_buff *skb)
|
|
|
|
{
|
2008-03-06 04:47:47 +00:00
|
|
|
IRDA_DEBUG(4, "%s()\n", __func__);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
switch (event) {
|
|
|
|
case IAP_RECV_F_LST:
|
|
|
|
iriap_next_r_connect_state(self, R_EXECUTE);
|
|
|
|
|
|
|
|
iriap_call_indication(self, skb);
|
|
|
|
break;
|
|
|
|
default:
|
2008-03-06 04:47:47 +00:00
|
|
|
IRDA_DEBUG(0, "%s(), unknown event!\n", __func__);
|
2005-04-16 22:20:36 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Function state_r_execute (self, event, skb)
|
|
|
|
*
|
|
|
|
* The server is processing the request
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
static void state_r_execute(struct iriap_cb *self, IRIAP_EVENT event,
|
|
|
|
struct sk_buff *skb)
|
|
|
|
{
|
2008-03-06 04:47:47 +00:00
|
|
|
IRDA_DEBUG(4, "%s()\n", __func__);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
IRDA_ASSERT(skb != NULL, return;);
|
|
|
|
IRDA_ASSERT(self != NULL, return;);
|
|
|
|
IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
|
|
|
|
|
|
|
|
switch (event) {
|
|
|
|
case IAP_CALL_RESPONSE:
|
|
|
|
/*
|
|
|
|
* Since we don't implement the Waiting state, we return
|
|
|
|
* to state Receiving instead, DB.
|
|
|
|
*/
|
|
|
|
iriap_next_r_connect_state(self, R_RECEIVING);
|
|
|
|
|
|
|
|
/* Don't forget to refcount it - see
|
|
|
|
* iriap_getvaluebyclass_response(). */
|
|
|
|
skb_get(skb);
|
|
|
|
|
|
|
|
irlmp_data_request(self->lsap, skb);
|
|
|
|
break;
|
|
|
|
default:
|
2008-03-06 04:47:47 +00:00
|
|
|
IRDA_DEBUG(0, "%s(), unknown event!\n", __func__);
|
2005-04-16 22:20:36 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void state_r_returning(struct iriap_cb *self, IRIAP_EVENT event,
|
|
|
|
struct sk_buff *skb)
|
|
|
|
{
|
2008-03-06 04:47:47 +00:00
|
|
|
IRDA_DEBUG(0, "%s(), event=%d\n", __func__, event);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
switch (event) {
|
|
|
|
case IAP_RECV_F_LST:
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|