/*********************************************************************
|
/*********************************************************************
|
*
|
*
|
* Filename: irlmp_event.c
|
* Filename: irlmp_event.c
|
* Version: 0.8
|
* Version: 0.8
|
* Description: An IrDA LMP event driver for Linux
|
* Description: An IrDA LMP event driver for Linux
|
* Status: Experimental.
|
* Status: Experimental.
|
* Author: Dag Brattli <dagb@cs.uit.no>
|
* Author: Dag Brattli <dagb@cs.uit.no>
|
* Created at: Mon Aug 4 20:40:53 1997
|
* Created at: Mon Aug 4 20:40:53 1997
|
* Modified at: Tue Dec 14 23:04:16 1999
|
* Modified at: Tue Dec 14 23:04:16 1999
|
* Modified by: Dag Brattli <dagb@cs.uit.no>
|
* Modified by: Dag Brattli <dagb@cs.uit.no>
|
*
|
*
|
* Copyright (c) 1998-1999 Dag Brattli <dagb@cs.uit.no>,
|
* Copyright (c) 1998-1999 Dag Brattli <dagb@cs.uit.no>,
|
* All Rights Reserved.
|
* All Rights Reserved.
|
* Copyright (c) 2000-2001 Jean Tourrilhes <jt@hpl.hp.com>
|
* Copyright (c) 2000-2001 Jean Tourrilhes <jt@hpl.hp.com>
|
*
|
*
|
* This program is free software; you can redistribute it and/or
|
* This program is free software; you can redistribute it and/or
|
* modify it under the terms of the GNU General Public License as
|
* modify it under the terms of the GNU General Public License as
|
* published by the Free Software Foundation; either version 2 of
|
* published by the Free Software Foundation; either version 2 of
|
* the License, or (at your option) any later version.
|
* the License, or (at your option) any later version.
|
*
|
*
|
* Neither Dag Brattli nor University of Tromsø admit liability nor
|
* Neither Dag Brattli nor University of Tromsø admit liability nor
|
* provide warranty for any of this software. This material is
|
* provide warranty for any of this software. This material is
|
* provided "AS-IS" and at no charge.
|
* provided "AS-IS" and at no charge.
|
*
|
*
|
********************************************************************/
|
********************************************************************/
|
|
|
#include <linux/config.h>
|
#include <linux/config.h>
|
#include <linux/kernel.h>
|
#include <linux/kernel.h>
|
|
|
#include <net/irda/irda.h>
|
#include <net/irda/irda.h>
|
#include <net/irda/timer.h>
|
#include <net/irda/timer.h>
|
#include <net/irda/irlap.h>
|
#include <net/irda/irlap.h>
|
#include <net/irda/irlmp.h>
|
#include <net/irda/irlmp.h>
|
#include <net/irda/irlmp_frame.h>
|
#include <net/irda/irlmp_frame.h>
|
#include <net/irda/irlmp_event.h>
|
#include <net/irda/irlmp_event.h>
|
|
|
const char *irlmp_state[] = {
|
const char *irlmp_state[] = {
|
"LAP_STANDBY",
|
"LAP_STANDBY",
|
"LAP_U_CONNECT",
|
"LAP_U_CONNECT",
|
"LAP_ACTIVE",
|
"LAP_ACTIVE",
|
};
|
};
|
|
|
const char *irlsap_state[] = {
|
const char *irlsap_state[] = {
|
"LSAP_DISCONNECTED",
|
"LSAP_DISCONNECTED",
|
"LSAP_CONNECT",
|
"LSAP_CONNECT",
|
"LSAP_CONNECT_PEND",
|
"LSAP_CONNECT_PEND",
|
"LSAP_DATA_TRANSFER_READY",
|
"LSAP_DATA_TRANSFER_READY",
|
"LSAP_SETUP",
|
"LSAP_SETUP",
|
"LSAP_SETUP_PEND",
|
"LSAP_SETUP_PEND",
|
};
|
};
|
|
|
#ifdef CONFIG_IRDA_DEBUG
|
#ifdef CONFIG_IRDA_DEBUG
|
static const char *irlmp_event[] = {
|
static const char *irlmp_event[] = {
|
"LM_CONNECT_REQUEST",
|
"LM_CONNECT_REQUEST",
|
"LM_CONNECT_CONFIRM",
|
"LM_CONNECT_CONFIRM",
|
"LM_CONNECT_RESPONSE",
|
"LM_CONNECT_RESPONSE",
|
"LM_CONNECT_INDICATION",
|
"LM_CONNECT_INDICATION",
|
|
|
"LM_DISCONNECT_INDICATION",
|
"LM_DISCONNECT_INDICATION",
|
"LM_DISCONNECT_REQUEST",
|
"LM_DISCONNECT_REQUEST",
|
|
|
"LM_DATA_REQUEST",
|
"LM_DATA_REQUEST",
|
"LM_UDATA_REQUEST",
|
"LM_UDATA_REQUEST",
|
"LM_DATA_INDICATION",
|
"LM_DATA_INDICATION",
|
"LM_UDATA_INDICATION",
|
"LM_UDATA_INDICATION",
|
|
|
"LM_WATCHDOG_TIMEOUT",
|
"LM_WATCHDOG_TIMEOUT",
|
|
|
/* IrLAP events */
|
/* IrLAP events */
|
"LM_LAP_CONNECT_REQUEST",
|
"LM_LAP_CONNECT_REQUEST",
|
"LM_LAP_CONNECT_INDICATION",
|
"LM_LAP_CONNECT_INDICATION",
|
"LM_LAP_CONNECT_CONFIRM",
|
"LM_LAP_CONNECT_CONFIRM",
|
"LM_LAP_DISCONNECT_INDICATION",
|
"LM_LAP_DISCONNECT_INDICATION",
|
"LM_LAP_DISCONNECT_REQUEST",
|
"LM_LAP_DISCONNECT_REQUEST",
|
"LM_LAP_DISCOVERY_REQUEST",
|
"LM_LAP_DISCOVERY_REQUEST",
|
"LM_LAP_DISCOVERY_CONFIRM",
|
"LM_LAP_DISCOVERY_CONFIRM",
|
"LM_LAP_IDLE_TIMEOUT",
|
"LM_LAP_IDLE_TIMEOUT",
|
};
|
};
|
#endif /* CONFIG_IRDA_DEBUG */
|
#endif /* CONFIG_IRDA_DEBUG */
|
|
|
/* LAP Connection control proto declarations */
|
/* LAP Connection control proto declarations */
|
static void irlmp_state_standby (struct lap_cb *, IRLMP_EVENT,
|
static void irlmp_state_standby (struct lap_cb *, IRLMP_EVENT,
|
struct sk_buff *);
|
struct sk_buff *);
|
static void irlmp_state_u_connect(struct lap_cb *, IRLMP_EVENT,
|
static void irlmp_state_u_connect(struct lap_cb *, IRLMP_EVENT,
|
struct sk_buff *);
|
struct sk_buff *);
|
static void irlmp_state_active (struct lap_cb *, IRLMP_EVENT,
|
static void irlmp_state_active (struct lap_cb *, IRLMP_EVENT,
|
struct sk_buff *);
|
struct sk_buff *);
|
|
|
/* LSAP Connection control proto declarations */
|
/* LSAP Connection control proto declarations */
|
static int irlmp_state_disconnected(struct lsap_cb *, IRLMP_EVENT,
|
static int irlmp_state_disconnected(struct lsap_cb *, IRLMP_EVENT,
|
struct sk_buff *);
|
struct sk_buff *);
|
static int irlmp_state_connect (struct lsap_cb *, IRLMP_EVENT,
|
static int irlmp_state_connect (struct lsap_cb *, IRLMP_EVENT,
|
struct sk_buff *);
|
struct sk_buff *);
|
static int irlmp_state_connect_pend(struct lsap_cb *, IRLMP_EVENT,
|
static int irlmp_state_connect_pend(struct lsap_cb *, IRLMP_EVENT,
|
struct sk_buff *);
|
struct sk_buff *);
|
static int irlmp_state_dtr (struct lsap_cb *, IRLMP_EVENT,
|
static int irlmp_state_dtr (struct lsap_cb *, IRLMP_EVENT,
|
struct sk_buff *);
|
struct sk_buff *);
|
static int irlmp_state_setup (struct lsap_cb *, IRLMP_EVENT,
|
static int irlmp_state_setup (struct lsap_cb *, IRLMP_EVENT,
|
struct sk_buff *);
|
struct sk_buff *);
|
static int irlmp_state_setup_pend (struct lsap_cb *, IRLMP_EVENT,
|
static int irlmp_state_setup_pend (struct lsap_cb *, IRLMP_EVENT,
|
struct sk_buff *);
|
struct sk_buff *);
|
|
|
static void (*lap_state[]) (struct lap_cb *, IRLMP_EVENT, struct sk_buff *) =
|
static void (*lap_state[]) (struct lap_cb *, IRLMP_EVENT, struct sk_buff *) =
|
{
|
{
|
irlmp_state_standby,
|
irlmp_state_standby,
|
irlmp_state_u_connect,
|
irlmp_state_u_connect,
|
irlmp_state_active,
|
irlmp_state_active,
|
};
|
};
|
|
|
static int (*lsap_state[])( struct lsap_cb *, IRLMP_EVENT, struct sk_buff *) =
|
static int (*lsap_state[])( struct lsap_cb *, IRLMP_EVENT, struct sk_buff *) =
|
{
|
{
|
irlmp_state_disconnected,
|
irlmp_state_disconnected,
|
irlmp_state_connect,
|
irlmp_state_connect,
|
irlmp_state_connect_pend,
|
irlmp_state_connect_pend,
|
irlmp_state_dtr,
|
irlmp_state_dtr,
|
irlmp_state_setup,
|
irlmp_state_setup,
|
irlmp_state_setup_pend
|
irlmp_state_setup_pend
|
};
|
};
|
|
|
static inline void irlmp_next_lap_state(struct lap_cb *self,
|
static inline void irlmp_next_lap_state(struct lap_cb *self,
|
IRLMP_STATE state)
|
IRLMP_STATE state)
|
{
|
{
|
/*
|
/*
|
IRDA_DEBUG(4, "%s(), LMP LAP = %s\n", __FUNCTION__, irlmp_state[state]);
|
IRDA_DEBUG(4, "%s(), LMP LAP = %s\n", __FUNCTION__, irlmp_state[state]);
|
*/
|
*/
|
self->lap_state = state;
|
self->lap_state = state;
|
}
|
}
|
|
|
static inline void irlmp_next_lsap_state(struct lsap_cb *self,
|
static inline void irlmp_next_lsap_state(struct lsap_cb *self,
|
LSAP_STATE state)
|
LSAP_STATE state)
|
{
|
{
|
/*
|
/*
|
ASSERT(self != NULL, return;);
|
ASSERT(self != NULL, return;);
|
IRDA_DEBUG(4, "%s(), LMP LSAP = %s\n", __FUNCTION__, irlsap_state[state]);
|
IRDA_DEBUG(4, "%s(), LMP LSAP = %s\n", __FUNCTION__, irlsap_state[state]);
|
*/
|
*/
|
self->lsap_state = state;
|
self->lsap_state = state;
|
}
|
}
|
|
|
/* Do connection control events */
|
/* Do connection control events */
|
int irlmp_do_lsap_event(struct lsap_cb *self, IRLMP_EVENT event,
|
int irlmp_do_lsap_event(struct lsap_cb *self, IRLMP_EVENT event,
|
struct sk_buff *skb)
|
struct sk_buff *skb)
|
{
|
{
|
ASSERT(self != NULL, return -1;);
|
ASSERT(self != NULL, return -1;);
|
ASSERT(self->magic == LMP_LSAP_MAGIC, return -1;);
|
ASSERT(self->magic == LMP_LSAP_MAGIC, return -1;);
|
|
|
IRDA_DEBUG(4, "%s(), EVENT = %s, STATE = %s\n",
|
IRDA_DEBUG(4, "%s(), EVENT = %s, STATE = %s\n",
|
__FUNCTION__, irlmp_event[event], irlsap_state[ self->lsap_state]);
|
__FUNCTION__, irlmp_event[event], irlsap_state[ self->lsap_state]);
|
|
|
return (*lsap_state[self->lsap_state]) (self, event, skb);
|
return (*lsap_state[self->lsap_state]) (self, event, skb);
|
}
|
}
|
|
|
/*
|
/*
|
* Function do_lap_event (event, skb, info)
|
* Function do_lap_event (event, skb, info)
|
*
|
*
|
* Do IrLAP control events
|
* Do IrLAP control events
|
*
|
*
|
*/
|
*/
|
void irlmp_do_lap_event(struct lap_cb *self, IRLMP_EVENT event,
|
void irlmp_do_lap_event(struct lap_cb *self, IRLMP_EVENT event,
|
struct sk_buff *skb)
|
struct sk_buff *skb)
|
{
|
{
|
ASSERT(self != NULL, return;);
|
ASSERT(self != NULL, return;);
|
ASSERT(self->magic == LMP_LAP_MAGIC, return;);
|
ASSERT(self->magic == LMP_LAP_MAGIC, return;);
|
|
|
IRDA_DEBUG(4, "%s(), EVENT = %s, STATE = %s\n",
|
IRDA_DEBUG(4, "%s(), EVENT = %s, STATE = %s\n",
|
__FUNCTION__, irlmp_event[event],
|
__FUNCTION__, irlmp_event[event],
|
irlmp_state[self->lap_state]);
|
irlmp_state[self->lap_state]);
|
|
|
(*lap_state[self->lap_state]) (self, event, skb);
|
(*lap_state[self->lap_state]) (self, event, skb);
|
}
|
}
|
|
|
void irlmp_discovery_timer_expired(void *data)
|
void irlmp_discovery_timer_expired(void *data)
|
{
|
{
|
IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
|
IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
|
|
|
/* We always cleanup the log (active & passive discovery) */
|
/* We always cleanup the log (active & passive discovery) */
|
irlmp_do_expiry();
|
irlmp_do_expiry();
|
|
|
/* Active discovery is conditional */
|
/* Active discovery is conditional */
|
if (sysctl_discovery)
|
if (sysctl_discovery)
|
irlmp_do_discovery(sysctl_discovery_slots);
|
irlmp_do_discovery(sysctl_discovery_slots);
|
|
|
/* Restart timer */
|
/* Restart timer */
|
irlmp_start_discovery_timer(irlmp, sysctl_discovery_timeout * HZ);
|
irlmp_start_discovery_timer(irlmp, sysctl_discovery_timeout * HZ);
|
}
|
}
|
|
|
void irlmp_watchdog_timer_expired(void *data)
|
void irlmp_watchdog_timer_expired(void *data)
|
{
|
{
|
struct lsap_cb *self = (struct lsap_cb *) data;
|
struct lsap_cb *self = (struct lsap_cb *) data;
|
|
|
IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
|
IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
|
|
|
ASSERT(self != NULL, return;);
|
ASSERT(self != NULL, return;);
|
ASSERT(self->magic == LMP_LSAP_MAGIC, return;);
|
ASSERT(self->magic == LMP_LSAP_MAGIC, return;);
|
|
|
irlmp_do_lsap_event(self, LM_WATCHDOG_TIMEOUT, NULL);
|
irlmp_do_lsap_event(self, LM_WATCHDOG_TIMEOUT, NULL);
|
}
|
}
|
|
|
void irlmp_idle_timer_expired(void *data)
|
void irlmp_idle_timer_expired(void *data)
|
{
|
{
|
struct lap_cb *self = (struct lap_cb *) data;
|
struct lap_cb *self = (struct lap_cb *) data;
|
|
|
IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
|
IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
|
|
|
ASSERT(self != NULL, return;);
|
ASSERT(self != NULL, return;);
|
ASSERT(self->magic == LMP_LAP_MAGIC, return;);
|
ASSERT(self->magic == LMP_LAP_MAGIC, return;);
|
|
|
irlmp_do_lap_event(self, LM_LAP_IDLE_TIMEOUT, NULL);
|
irlmp_do_lap_event(self, LM_LAP_IDLE_TIMEOUT, NULL);
|
}
|
}
|
|
|
/*********************************************************************
|
/*********************************************************************
|
*
|
*
|
* LAP connection control states
|
* LAP connection control states
|
*
|
*
|
********************************************************************/
|
********************************************************************/
|
|
|
/*
|
/*
|
* Function irlmp_state_standby (event, skb, info)
|
* Function irlmp_state_standby (event, skb, info)
|
*
|
*
|
* STANDBY, The IrLAP connection does not exist.
|
* STANDBY, The IrLAP connection does not exist.
|
*
|
*
|
*/
|
*/
|
static void irlmp_state_standby(struct lap_cb *self, IRLMP_EVENT event,
|
static void irlmp_state_standby(struct lap_cb *self, IRLMP_EVENT event,
|
struct sk_buff *skb)
|
struct sk_buff *skb)
|
{
|
{
|
IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
|
IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
|
ASSERT(self->irlap != NULL, return;);
|
ASSERT(self->irlap != NULL, return;);
|
|
|
switch (event) {
|
switch (event) {
|
case LM_LAP_DISCOVERY_REQUEST:
|
case LM_LAP_DISCOVERY_REQUEST:
|
/* irlmp_next_station_state( LMP_DISCOVER); */
|
/* irlmp_next_station_state( LMP_DISCOVER); */
|
|
|
irlap_discovery_request(self->irlap, &irlmp->discovery_cmd);
|
irlap_discovery_request(self->irlap, &irlmp->discovery_cmd);
|
break;
|
break;
|
case LM_LAP_CONNECT_INDICATION:
|
case LM_LAP_CONNECT_INDICATION:
|
/* It's important to switch state first, to avoid IrLMP to
|
/* It's important to switch state first, to avoid IrLMP to
|
* think that the link is free since IrLMP may then start
|
* think that the link is free since IrLMP may then start
|
* discovery before the connection is properly set up. DB.
|
* discovery before the connection is properly set up. DB.
|
*/
|
*/
|
irlmp_next_lap_state(self, LAP_ACTIVE);
|
irlmp_next_lap_state(self, LAP_ACTIVE);
|
|
|
/* Just accept connection TODO, this should be fixed */
|
/* Just accept connection TODO, this should be fixed */
|
irlap_connect_response(self->irlap, skb);
|
irlap_connect_response(self->irlap, skb);
|
break;
|
break;
|
case LM_LAP_CONNECT_REQUEST:
|
case LM_LAP_CONNECT_REQUEST:
|
IRDA_DEBUG(4, "%s() LS_CONNECT_REQUEST\n", __FUNCTION__);
|
IRDA_DEBUG(4, "%s() LS_CONNECT_REQUEST\n", __FUNCTION__);
|
|
|
irlmp_next_lap_state(self, LAP_U_CONNECT);
|
irlmp_next_lap_state(self, LAP_U_CONNECT);
|
|
|
/* FIXME: need to set users requested QoS */
|
/* FIXME: need to set users requested QoS */
|
irlap_connect_request(self->irlap, self->daddr, NULL, 0);
|
irlap_connect_request(self->irlap, self->daddr, NULL, 0);
|
break;
|
break;
|
case LM_LAP_DISCONNECT_INDICATION:
|
case LM_LAP_DISCONNECT_INDICATION:
|
IRDA_DEBUG(4, "%s(), Error LM_LAP_DISCONNECT_INDICATION\n", __FUNCTION__);
|
IRDA_DEBUG(4, "%s(), Error LM_LAP_DISCONNECT_INDICATION\n", __FUNCTION__);
|
|
|
irlmp_next_lap_state(self, LAP_STANDBY);
|
irlmp_next_lap_state(self, LAP_STANDBY);
|
break;
|
break;
|
default:
|
default:
|
IRDA_DEBUG(0, "%s(), Unknown event %s\n", __FUNCTION__, irlmp_event[event]);
|
IRDA_DEBUG(0, "%s(), Unknown event %s\n", __FUNCTION__, irlmp_event[event]);
|
if (skb)
|
if (skb)
|
dev_kfree_skb(skb);
|
dev_kfree_skb(skb);
|
break;
|
break;
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
* Function irlmp_state_u_connect (event, skb, info)
|
* Function irlmp_state_u_connect (event, skb, info)
|
*
|
*
|
* U_CONNECT, The layer above has tried to open an LSAP connection but
|
* U_CONNECT, The layer above has tried to open an LSAP connection but
|
* since the IrLAP connection does not exist, we must first start an
|
* since the IrLAP connection does not exist, we must first start an
|
* IrLAP connection. We are now waiting response from IrLAP.
|
* IrLAP connection. We are now waiting response from IrLAP.
|
* */
|
* */
|
static void irlmp_state_u_connect(struct lap_cb *self, IRLMP_EVENT event,
|
static void irlmp_state_u_connect(struct lap_cb *self, IRLMP_EVENT event,
|
struct sk_buff *skb)
|
struct sk_buff *skb)
|
{
|
{
|
struct lsap_cb *lsap;
|
struct lsap_cb *lsap;
|
struct lsap_cb *lsap_current;
|
struct lsap_cb *lsap_current;
|
|
|
IRDA_DEBUG(2, "%s(), event=%s\n", __FUNCTION__, irlmp_event[event]);
|
IRDA_DEBUG(2, "%s(), event=%s\n", __FUNCTION__, irlmp_event[event]);
|
|
|
switch (event) {
|
switch (event) {
|
case LM_LAP_CONNECT_INDICATION:
|
case LM_LAP_CONNECT_INDICATION:
|
/* It's important to switch state first, to avoid IrLMP to
|
/* It's important to switch state first, to avoid IrLMP to
|
* think that the link is free since IrLMP may then start
|
* think that the link is free since IrLMP may then start
|
* discovery before the connection is properly set up. DB.
|
* discovery before the connection is properly set up. DB.
|
*/
|
*/
|
irlmp_next_lap_state(self, LAP_ACTIVE);
|
irlmp_next_lap_state(self, LAP_ACTIVE);
|
|
|
/* Just accept connection TODO, this should be fixed */
|
/* Just accept connection TODO, this should be fixed */
|
irlap_connect_response(self->irlap, skb);
|
irlap_connect_response(self->irlap, skb);
|
|
|
lsap = (struct lsap_cb *) hashbin_get_first(self->lsaps);
|
lsap = (struct lsap_cb *) hashbin_get_first(self->lsaps);
|
while (lsap != NULL) {
|
while (lsap != NULL) {
|
irlmp_do_lsap_event(lsap, LM_LAP_CONNECT_CONFIRM, NULL);
|
irlmp_do_lsap_event(lsap, LM_LAP_CONNECT_CONFIRM, NULL);
|
lsap = (struct lsap_cb*) hashbin_get_next(self->lsaps);
|
lsap = (struct lsap_cb*) hashbin_get_next(self->lsaps);
|
}
|
}
|
/* Note : by the time we get there (LAP retries and co),
|
/* Note : by the time we get there (LAP retries and co),
|
* the lsaps may already have gone. This avoid getting stuck
|
* the lsaps may already have gone. This avoid getting stuck
|
* forever in LAP_ACTIVE state - Jean II */
|
* forever in LAP_ACTIVE state - Jean II */
|
if (HASHBIN_GET_SIZE(self->lsaps) == 0) {
|
if (HASHBIN_GET_SIZE(self->lsaps) == 0) {
|
IRDA_DEBUG(0, "%s() NO LSAPs !\n", __FUNCTION__);
|
IRDA_DEBUG(0, "%s() NO LSAPs !\n", __FUNCTION__);
|
irlmp_start_idle_timer(self, LM_IDLE_TIMEOUT);
|
irlmp_start_idle_timer(self, LM_IDLE_TIMEOUT);
|
}
|
}
|
break;
|
break;
|
case LM_LAP_CONNECT_REQUEST:
|
case LM_LAP_CONNECT_REQUEST:
|
/* Already trying to connect */
|
/* Already trying to connect */
|
break;
|
break;
|
case LM_LAP_CONNECT_CONFIRM:
|
case LM_LAP_CONNECT_CONFIRM:
|
/* For all lsap_ce E Associated do LS_Connect_confirm */
|
/* For all lsap_ce E Associated do LS_Connect_confirm */
|
irlmp_next_lap_state(self, LAP_ACTIVE);
|
irlmp_next_lap_state(self, LAP_ACTIVE);
|
|
|
lsap = (struct lsap_cb *) hashbin_get_first(self->lsaps);
|
lsap = (struct lsap_cb *) hashbin_get_first(self->lsaps);
|
while (lsap != NULL) {
|
while (lsap != NULL) {
|
irlmp_do_lsap_event(lsap, LM_LAP_CONNECT_CONFIRM, NULL);
|
irlmp_do_lsap_event(lsap, LM_LAP_CONNECT_CONFIRM, NULL);
|
lsap = (struct lsap_cb*) hashbin_get_next(self->lsaps);
|
lsap = (struct lsap_cb*) hashbin_get_next(self->lsaps);
|
}
|
}
|
/* Note : by the time we get there (LAP retries and co),
|
/* Note : by the time we get there (LAP retries and co),
|
* the lsaps may already have gone. This avoid getting stuck
|
* the lsaps may already have gone. This avoid getting stuck
|
* forever in LAP_ACTIVE state - Jean II */
|
* forever in LAP_ACTIVE state - Jean II */
|
if (HASHBIN_GET_SIZE(self->lsaps) == 0) {
|
if (HASHBIN_GET_SIZE(self->lsaps) == 0) {
|
IRDA_DEBUG(0, "%s() NO LSAPs !\n", __FUNCTION__);
|
IRDA_DEBUG(0, "%s() NO LSAPs !\n", __FUNCTION__);
|
irlmp_start_idle_timer(self, LM_IDLE_TIMEOUT);
|
irlmp_start_idle_timer(self, LM_IDLE_TIMEOUT);
|
}
|
}
|
break;
|
break;
|
case LM_LAP_DISCONNECT_INDICATION:
|
case LM_LAP_DISCONNECT_INDICATION:
|
IRDA_DEBUG(4, "%s(), LM_LAP_DISCONNECT_INDICATION\n", __FUNCTION__);
|
IRDA_DEBUG(4, "%s(), LM_LAP_DISCONNECT_INDICATION\n", __FUNCTION__);
|
irlmp_next_lap_state(self, LAP_STANDBY);
|
irlmp_next_lap_state(self, LAP_STANDBY);
|
|
|
/* Send disconnect event to all LSAPs using this link */
|
/* Send disconnect event to all LSAPs using this link */
|
lsap = (struct lsap_cb *) hashbin_get_first( self->lsaps);
|
lsap = (struct lsap_cb *) hashbin_get_first( self->lsaps);
|
while (lsap != NULL ) {
|
while (lsap != NULL ) {
|
ASSERT(lsap->magic == LMP_LSAP_MAGIC, return;);
|
ASSERT(lsap->magic == LMP_LSAP_MAGIC, return;);
|
|
|
lsap_current = lsap;
|
lsap_current = lsap;
|
|
|
/* Be sure to stay one item ahead */
|
/* Be sure to stay one item ahead */
|
lsap = (struct lsap_cb *) hashbin_get_next(self->lsaps);
|
lsap = (struct lsap_cb *) hashbin_get_next(self->lsaps);
|
irlmp_do_lsap_event(lsap_current,
|
irlmp_do_lsap_event(lsap_current,
|
LM_LAP_DISCONNECT_INDICATION,
|
LM_LAP_DISCONNECT_INDICATION,
|
NULL);
|
NULL);
|
}
|
}
|
break;
|
break;
|
case LM_LAP_DISCONNECT_REQUEST:
|
case LM_LAP_DISCONNECT_REQUEST:
|
IRDA_DEBUG(4, "%s(), LM_LAP_DISCONNECT_REQUEST\n", __FUNCTION__);
|
IRDA_DEBUG(4, "%s(), LM_LAP_DISCONNECT_REQUEST\n", __FUNCTION__);
|
|
|
/* One of the LSAP did timeout or was closed, if it was
|
/* One of the LSAP did timeout or was closed, if it was
|
* the last one, try to get out of here - Jean II */
|
* the last one, try to get out of here - Jean II */
|
if (HASHBIN_GET_SIZE(self->lsaps) <= 1) {
|
if (HASHBIN_GET_SIZE(self->lsaps) <= 1) {
|
irlap_disconnect_request(self->irlap);
|
irlap_disconnect_request(self->irlap);
|
}
|
}
|
break;
|
break;
|
default:
|
default:
|
IRDA_DEBUG(0, "%s(), Unknown event %s\n",
|
IRDA_DEBUG(0, "%s(), Unknown event %s\n",
|
__FUNCTION__, irlmp_event[event]);
|
__FUNCTION__, irlmp_event[event]);
|
if (skb)
|
if (skb)
|
dev_kfree_skb(skb);
|
dev_kfree_skb(skb);
|
break;
|
break;
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
* Function irlmp_state_active (event, skb, info)
|
* Function irlmp_state_active (event, skb, info)
|
*
|
*
|
* ACTIVE, IrLAP connection is active
|
* ACTIVE, IrLAP connection is active
|
*
|
*
|
*/
|
*/
|
static void irlmp_state_active(struct lap_cb *self, IRLMP_EVENT event,
|
static void irlmp_state_active(struct lap_cb *self, IRLMP_EVENT event,
|
struct sk_buff *skb)
|
struct sk_buff *skb)
|
{
|
{
|
struct lsap_cb *lsap;
|
struct lsap_cb *lsap;
|
struct lsap_cb *lsap_current;
|
struct lsap_cb *lsap_current;
|
|
|
IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
|
IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
|
|
|
switch (event) {
|
switch (event) {
|
case LM_LAP_CONNECT_REQUEST:
|
case LM_LAP_CONNECT_REQUEST:
|
IRDA_DEBUG(4, "%s(), LS_CONNECT_REQUEST\n", __FUNCTION__);
|
IRDA_DEBUG(4, "%s(), LS_CONNECT_REQUEST\n", __FUNCTION__);
|
|
|
/*
|
/*
|
* LAP connection allready active, just bounce back! Since we
|
* LAP connection allready active, just bounce back! Since we
|
* don't know which LSAP that tried to do this, we have to
|
* don't know which LSAP that tried to do this, we have to
|
* notify all LSAPs using this LAP, but that should be safe to
|
* notify all LSAPs using this LAP, but that should be safe to
|
* do anyway.
|
* do anyway.
|
*/
|
*/
|
lsap = (struct lsap_cb *) hashbin_get_first(self->lsaps);
|
lsap = (struct lsap_cb *) hashbin_get_first(self->lsaps);
|
while (lsap != NULL) {
|
while (lsap != NULL) {
|
irlmp_do_lsap_event(lsap, LM_LAP_CONNECT_CONFIRM, NULL);
|
irlmp_do_lsap_event(lsap, LM_LAP_CONNECT_CONFIRM, NULL);
|
lsap = (struct lsap_cb*) hashbin_get_next(self->lsaps);
|
lsap = (struct lsap_cb*) hashbin_get_next(self->lsaps);
|
}
|
}
|
|
|
/* Needed by connect indication */
|
/* Needed by connect indication */
|
lsap = (struct lsap_cb *) hashbin_get_first(irlmp->unconnected_lsaps);
|
lsap = (struct lsap_cb *) hashbin_get_first(irlmp->unconnected_lsaps);
|
while (lsap != NULL) {
|
while (lsap != NULL) {
|
lsap_current = lsap;
|
lsap_current = lsap;
|
|
|
/* Be sure to stay one item ahead */
|
/* Be sure to stay one item ahead */
|
lsap = (struct lsap_cb*) hashbin_get_next(irlmp->unconnected_lsaps);
|
lsap = (struct lsap_cb*) hashbin_get_next(irlmp->unconnected_lsaps);
|
irlmp_do_lsap_event(lsap_current,
|
irlmp_do_lsap_event(lsap_current,
|
LM_LAP_CONNECT_CONFIRM, NULL);
|
LM_LAP_CONNECT_CONFIRM, NULL);
|
}
|
}
|
/* Keep state */
|
/* Keep state */
|
break;
|
break;
|
case LM_LAP_DISCONNECT_REQUEST:
|
case LM_LAP_DISCONNECT_REQUEST:
|
/*
|
/*
|
* Need to find out if we should close IrLAP or not. If there
|
* Need to find out if we should close IrLAP or not. If there
|
* is only one LSAP connection left on this link, that LSAP
|
* is only one LSAP connection left on this link, that LSAP
|
* must be the one that tries to close IrLAP. It will be
|
* must be the one that tries to close IrLAP. It will be
|
* removed later and moved to the list of unconnected LSAPs
|
* removed later and moved to the list of unconnected LSAPs
|
*/
|
*/
|
if (HASHBIN_GET_SIZE(self->lsaps) > 0) {
|
if (HASHBIN_GET_SIZE(self->lsaps) > 0) {
|
/* Timer value is checked in irsysctl - Jean II */
|
/* Timer value is checked in irsysctl - Jean II */
|
irlmp_start_idle_timer(self, sysctl_lap_keepalive_time * HZ / 1000);
|
irlmp_start_idle_timer(self, sysctl_lap_keepalive_time * HZ / 1000);
|
} else {
|
} else {
|
/* No more connections, so close IrLAP */
|
/* No more connections, so close IrLAP */
|
|
|
/* We don't want to change state just yet, because
|
/* We don't want to change state just yet, because
|
* we want to reflect accurately the real state of
|
* we want to reflect accurately the real state of
|
* the LAP, not the state we wish it was in,
|
* the LAP, not the state we wish it was in,
|
* so that we don't loose LM_LAP_CONNECT_REQUEST.
|
* so that we don't loose LM_LAP_CONNECT_REQUEST.
|
* In some cases, IrLAP won't close the LAP
|
* In some cases, IrLAP won't close the LAP
|
* immediately. For example, it might still be
|
* immediately. For example, it might still be
|
* retrying packets or waiting for the pf bit.
|
* retrying packets or waiting for the pf bit.
|
* As the LAP always send a DISCONNECT_INDICATION
|
* As the LAP always send a DISCONNECT_INDICATION
|
* in PCLOSE or SCLOSE, just change state on that.
|
* in PCLOSE or SCLOSE, just change state on that.
|
* Jean II */
|
* Jean II */
|
irlap_disconnect_request(self->irlap);
|
irlap_disconnect_request(self->irlap);
|
}
|
}
|
break;
|
break;
|
case LM_LAP_IDLE_TIMEOUT:
|
case LM_LAP_IDLE_TIMEOUT:
|
if (HASHBIN_GET_SIZE(self->lsaps) == 0) {
|
if (HASHBIN_GET_SIZE(self->lsaps) == 0) {
|
/* Same reasoning as above - keep state */
|
/* Same reasoning as above - keep state */
|
irlap_disconnect_request(self->irlap);
|
irlap_disconnect_request(self->irlap);
|
}
|
}
|
break;
|
break;
|
case LM_LAP_DISCONNECT_INDICATION:
|
case LM_LAP_DISCONNECT_INDICATION:
|
irlmp_next_lap_state(self, LAP_STANDBY);
|
irlmp_next_lap_state(self, LAP_STANDBY);
|
|
|
/* In some case, at this point our side has already closed
|
/* In some case, at this point our side has already closed
|
* all lsaps, and we are waiting for the idle_timer to
|
* all lsaps, and we are waiting for the idle_timer to
|
* expire. If another device reconnect immediately, the
|
* expire. If another device reconnect immediately, the
|
* idle timer will expire in the midle of the connection
|
* idle timer will expire in the midle of the connection
|
* initialisation, screwing up things a lot...
|
* initialisation, screwing up things a lot...
|
* Therefore, we must stop the timer... */
|
* Therefore, we must stop the timer... */
|
irlmp_stop_idle_timer(self);
|
irlmp_stop_idle_timer(self);
|
|
|
/*
|
/*
|
* Inform all connected LSAP's using this link
|
* Inform all connected LSAP's using this link
|
*/
|
*/
|
lsap = (struct lsap_cb *) hashbin_get_first(self->lsaps);
|
lsap = (struct lsap_cb *) hashbin_get_first(self->lsaps);
|
while (lsap != NULL ) {
|
while (lsap != NULL ) {
|
ASSERT(lsap->magic == LMP_LSAP_MAGIC, return;);
|
ASSERT(lsap->magic == LMP_LSAP_MAGIC, return;);
|
|
|
lsap_current = lsap;
|
lsap_current = lsap;
|
|
|
/* Be sure to stay one item ahead */
|
/* Be sure to stay one item ahead */
|
lsap = (struct lsap_cb *) hashbin_get_next(self->lsaps);
|
lsap = (struct lsap_cb *) hashbin_get_next(self->lsaps);
|
irlmp_do_lsap_event(lsap_current,
|
irlmp_do_lsap_event(lsap_current,
|
LM_LAP_DISCONNECT_INDICATION,
|
LM_LAP_DISCONNECT_INDICATION,
|
NULL);
|
NULL);
|
}
|
}
|
|
|
/* Force an expiry of the discovery log.
|
/* Force an expiry of the discovery log.
|
* Now that the LAP is free, the system may attempt to
|
* Now that the LAP is free, the system may attempt to
|
* connect to another device. Unfortunately, our entries
|
* connect to another device. Unfortunately, our entries
|
* are stale. There is a small window (<3s) before the
|
* are stale. There is a small window (<3s) before the
|
* normal discovery will run and where irlmp_connect_request()
|
* normal discovery will run and where irlmp_connect_request()
|
* can get the wrong info, so make sure things get
|
* can get the wrong info, so make sure things get
|
* cleaned *NOW* ;-) - Jean II */
|
* cleaned *NOW* ;-) - Jean II */
|
irlmp_do_expiry();
|
irlmp_do_expiry();
|
break;
|
break;
|
default:
|
default:
|
IRDA_DEBUG(0, "%s(), Unknown event %s\n",
|
IRDA_DEBUG(0, "%s(), Unknown event %s\n",
|
__FUNCTION__, irlmp_event[event]);
|
__FUNCTION__, irlmp_event[event]);
|
if (skb)
|
if (skb)
|
dev_kfree_skb(skb);
|
dev_kfree_skb(skb);
|
break;
|
break;
|
}
|
}
|
}
|
}
|
|
|
/*********************************************************************
|
/*********************************************************************
|
*
|
*
|
* LSAP connection control states
|
* LSAP connection control states
|
*
|
*
|
********************************************************************/
|
********************************************************************/
|
|
|
/*
|
/*
|
* Function irlmp_state_disconnected (event, skb, info)
|
* Function irlmp_state_disconnected (event, skb, info)
|
*
|
*
|
* DISCONNECTED
|
* DISCONNECTED
|
*
|
*
|
*/
|
*/
|
static int irlmp_state_disconnected(struct lsap_cb *self, IRLMP_EVENT event,
|
static int irlmp_state_disconnected(struct lsap_cb *self, IRLMP_EVENT event,
|
struct sk_buff *skb)
|
struct sk_buff *skb)
|
{
|
{
|
int ret = 0;
|
int ret = 0;
|
|
|
IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
|
IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
|
|
|
ASSERT(self != NULL, return -1;);
|
ASSERT(self != NULL, return -1;);
|
ASSERT(self->magic == LMP_LSAP_MAGIC, return -1;);
|
ASSERT(self->magic == LMP_LSAP_MAGIC, return -1;);
|
|
|
switch (event) {
|
switch (event) {
|
#ifdef CONFIG_IRDA_ULTRA
|
#ifdef CONFIG_IRDA_ULTRA
|
case LM_UDATA_INDICATION:
|
case LM_UDATA_INDICATION:
|
irlmp_connless_data_indication(self, skb);
|
irlmp_connless_data_indication(self, skb);
|
break;
|
break;
|
#endif /* CONFIG_IRDA_ULTRA */
|
#endif /* CONFIG_IRDA_ULTRA */
|
case LM_CONNECT_REQUEST:
|
case LM_CONNECT_REQUEST:
|
IRDA_DEBUG(4, "%s(), LM_CONNECT_REQUEST\n", __FUNCTION__);
|
IRDA_DEBUG(4, "%s(), LM_CONNECT_REQUEST\n", __FUNCTION__);
|
|
|
if (self->conn_skb) {
|
if (self->conn_skb) {
|
WARNING("%s(), busy with another request!\n", __FUNCTION__);
|
WARNING("%s(), busy with another request!\n", __FUNCTION__);
|
return -EBUSY;
|
return -EBUSY;
|
}
|
}
|
self->conn_skb = skb;
|
self->conn_skb = skb;
|
|
|
irlmp_next_lsap_state(self, LSAP_SETUP_PEND);
|
irlmp_next_lsap_state(self, LSAP_SETUP_PEND);
|
|
|
/* Start watchdog timer (5 secs for now) */
|
/* Start watchdog timer (5 secs for now) */
|
irlmp_start_watchdog_timer(self, 5*HZ);
|
irlmp_start_watchdog_timer(self, 5*HZ);
|
|
|
irlmp_do_lap_event(self->lap, LM_LAP_CONNECT_REQUEST, NULL);
|
irlmp_do_lap_event(self->lap, LM_LAP_CONNECT_REQUEST, NULL);
|
break;
|
break;
|
case LM_CONNECT_INDICATION:
|
case LM_CONNECT_INDICATION:
|
if (self->conn_skb) {
|
if (self->conn_skb) {
|
WARNING("%s(), busy with another request!\n", __FUNCTION__);
|
WARNING("%s(), busy with another request!\n", __FUNCTION__);
|
return -EBUSY;
|
return -EBUSY;
|
}
|
}
|
self->conn_skb = skb;
|
self->conn_skb = skb;
|
|
|
irlmp_next_lsap_state(self, LSAP_CONNECT_PEND);
|
irlmp_next_lsap_state(self, LSAP_CONNECT_PEND);
|
|
|
/* Start watchdog timer
|
/* Start watchdog timer
|
* This is not mentionned in the spec, but there is a rare
|
* This is not mentionned in the spec, but there is a rare
|
* race condition that can get the socket stuck.
|
* race condition that can get the socket stuck.
|
* If we receive this event while our LAP is closing down,
|
* If we receive this event while our LAP is closing down,
|
* the LM_LAP_CONNECT_REQUEST get lost and we get stuck in
|
* the LM_LAP_CONNECT_REQUEST get lost and we get stuck in
|
* CONNECT_PEND state forever.
|
* CONNECT_PEND state forever.
|
* The other cause of getting stuck down there is if the
|
* The other cause of getting stuck down there is if the
|
* higher layer never reply to the CONNECT_INDICATION.
|
* higher layer never reply to the CONNECT_INDICATION.
|
* Anyway, it make sense to make sure that we always have
|
* Anyway, it make sense to make sure that we always have
|
* a backup plan. 1 second is plenty (should be immediate).
|
* a backup plan. 1 second is plenty (should be immediate).
|
* Jean II */
|
* Jean II */
|
irlmp_start_watchdog_timer(self, 1*HZ);
|
irlmp_start_watchdog_timer(self, 1*HZ);
|
|
|
irlmp_do_lap_event(self->lap, LM_LAP_CONNECT_REQUEST, NULL);
|
irlmp_do_lap_event(self->lap, LM_LAP_CONNECT_REQUEST, NULL);
|
break;
|
break;
|
default:
|
default:
|
IRDA_DEBUG(1, "%s(), Unknown event %s on LSAP %#02x\n",
|
IRDA_DEBUG(1, "%s(), Unknown event %s on LSAP %#02x\n",
|
__FUNCTION__, irlmp_event[event], self->slsap_sel);
|
__FUNCTION__, irlmp_event[event], self->slsap_sel);
|
if (skb)
|
if (skb)
|
dev_kfree_skb(skb);
|
dev_kfree_skb(skb);
|
break;
|
break;
|
}
|
}
|
return ret;
|
return ret;
|
}
|
}
|
|
|
/*
|
/*
|
* Function irlmp_state_connect (self, event, skb)
|
* Function irlmp_state_connect (self, event, skb)
|
*
|
*
|
* CONNECT
|
* CONNECT
|
*
|
*
|
*/
|
*/
|
static int irlmp_state_connect(struct lsap_cb *self, IRLMP_EVENT event,
|
static int irlmp_state_connect(struct lsap_cb *self, IRLMP_EVENT event,
|
struct sk_buff *skb)
|
struct sk_buff *skb)
|
{
|
{
|
struct lsap_cb *lsap;
|
struct lsap_cb *lsap;
|
int ret = 0;
|
int ret = 0;
|
|
|
IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
|
IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
|
|
|
ASSERT(self != NULL, return -1;);
|
ASSERT(self != NULL, return -1;);
|
ASSERT(self->magic == LMP_LSAP_MAGIC, return -1;);
|
ASSERT(self->magic == LMP_LSAP_MAGIC, return -1;);
|
|
|
switch (event) {
|
switch (event) {
|
case LM_CONNECT_RESPONSE:
|
case LM_CONNECT_RESPONSE:
|
/*
|
/*
|
* Bind this LSAP to the IrLAP link where the connect was
|
* Bind this LSAP to the IrLAP link where the connect was
|
* received
|
* received
|
*/
|
*/
|
lsap = hashbin_remove(irlmp->unconnected_lsaps, (int) self,
|
lsap = hashbin_remove(irlmp->unconnected_lsaps, (int) self,
|
NULL);
|
NULL);
|
|
|
ASSERT(lsap == self, return -1;);
|
ASSERT(lsap == self, return -1;);
|
ASSERT(self->lap != NULL, return -1;);
|
ASSERT(self->lap != NULL, return -1;);
|
ASSERT(self->lap->lsaps != NULL, return -1;);
|
ASSERT(self->lap->lsaps != NULL, return -1;);
|
|
|
hashbin_insert(self->lap->lsaps, (irda_queue_t *) self, (int) self,
|
hashbin_insert(self->lap->lsaps, (irda_queue_t *) self, (int) self,
|
NULL);
|
NULL);
|
|
|
irlmp_send_lcf_pdu(self->lap, self->dlsap_sel,
|
irlmp_send_lcf_pdu(self->lap, self->dlsap_sel,
|
self->slsap_sel, CONNECT_CNF, skb);
|
self->slsap_sel, CONNECT_CNF, skb);
|
|
|
del_timer(&self->watchdog_timer);
|
del_timer(&self->watchdog_timer);
|
|
|
irlmp_next_lsap_state(self, LSAP_DATA_TRANSFER_READY);
|
irlmp_next_lsap_state(self, LSAP_DATA_TRANSFER_READY);
|
break;
|
break;
|
case LM_WATCHDOG_TIMEOUT:
|
case LM_WATCHDOG_TIMEOUT:
|
/* May happen, who knows...
|
/* May happen, who knows...
|
* Jean II */
|
* Jean II */
|
IRDA_DEBUG(0, "%s() WATCHDOG_TIMEOUT!\n", __FUNCTION__);
|
IRDA_DEBUG(0, "%s() WATCHDOG_TIMEOUT!\n", __FUNCTION__);
|
|
|
/* Disconnect, get out... - Jean II */
|
/* Disconnect, get out... - Jean II */
|
self->dlsap_sel = LSAP_ANY;
|
self->dlsap_sel = LSAP_ANY;
|
irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
|
irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
|
break;
|
break;
|
default:
|
default:
|
IRDA_DEBUG(0, "%s(), Unknown event %s on LSAP %#02x\n",
|
IRDA_DEBUG(0, "%s(), Unknown event %s on LSAP %#02x\n",
|
__FUNCTION__, irlmp_event[event], self->slsap_sel);
|
__FUNCTION__, irlmp_event[event], self->slsap_sel);
|
if (skb)
|
if (skb)
|
dev_kfree_skb(skb);
|
dev_kfree_skb(skb);
|
break;
|
break;
|
}
|
}
|
return ret;
|
return ret;
|
}
|
}
|
|
|
/*
|
/*
|
* Function irlmp_state_connect_pend (event, skb, info)
|
* Function irlmp_state_connect_pend (event, skb, info)
|
*
|
*
|
* CONNECT_PEND
|
* CONNECT_PEND
|
*
|
*
|
*/
|
*/
|
static int irlmp_state_connect_pend(struct lsap_cb *self, IRLMP_EVENT event,
|
static int irlmp_state_connect_pend(struct lsap_cb *self, IRLMP_EVENT event,
|
struct sk_buff *skb)
|
struct sk_buff *skb)
|
{
|
{
|
int ret = 0;
|
int ret = 0;
|
|
|
IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
|
IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
|
|
|
ASSERT(self != NULL, return -1;);
|
ASSERT(self != NULL, return -1;);
|
ASSERT(self->magic == LMP_LSAP_MAGIC, return -1;);
|
ASSERT(self->magic == LMP_LSAP_MAGIC, return -1;);
|
|
|
switch (event) {
|
switch (event) {
|
case LM_CONNECT_REQUEST:
|
case LM_CONNECT_REQUEST:
|
/* Keep state */
|
/* Keep state */
|
break;
|
break;
|
case LM_CONNECT_RESPONSE:
|
case LM_CONNECT_RESPONSE:
|
IRDA_DEBUG(0, "%s(), LM_CONNECT_RESPONSE, "
|
IRDA_DEBUG(0, "%s(), LM_CONNECT_RESPONSE, "
|
"no indication issued yet\n", __FUNCTION__);
|
"no indication issued yet\n", __FUNCTION__);
|
/* Keep state */
|
/* Keep state */
|
break;
|
break;
|
case LM_DISCONNECT_REQUEST:
|
case LM_DISCONNECT_REQUEST:
|
IRDA_DEBUG(0, "%s(), LM_DISCONNECT_REQUEST, "
|
IRDA_DEBUG(0, "%s(), LM_DISCONNECT_REQUEST, "
|
"not yet bound to IrLAP connection\n", __FUNCTION__);
|
"not yet bound to IrLAP connection\n", __FUNCTION__);
|
/* Keep state */
|
/* Keep state */
|
break;
|
break;
|
case LM_LAP_CONNECT_CONFIRM:
|
case LM_LAP_CONNECT_CONFIRM:
|
IRDA_DEBUG(4, "%s(), LS_CONNECT_CONFIRM\n", __FUNCTION__);
|
IRDA_DEBUG(4, "%s(), LS_CONNECT_CONFIRM\n", __FUNCTION__);
|
irlmp_next_lsap_state(self, LSAP_CONNECT);
|
irlmp_next_lsap_state(self, LSAP_CONNECT);
|
|
|
skb = self->conn_skb;
|
skb = self->conn_skb;
|
self->conn_skb = NULL;
|
self->conn_skb = NULL;
|
|
|
irlmp_connect_indication(self, skb);
|
irlmp_connect_indication(self, skb);
|
break;
|
break;
|
case LM_WATCHDOG_TIMEOUT:
|
case LM_WATCHDOG_TIMEOUT:
|
/* Will happen in some rare cases because of a race condition.
|
/* Will happen in some rare cases because of a race condition.
|
* Just make sure we don't stay there forever...
|
* Just make sure we don't stay there forever...
|
* Jean II */
|
* Jean II */
|
IRDA_DEBUG(0, "%s() WATCHDOG_TIMEOUT!\n", __FUNCTION__);
|
IRDA_DEBUG(0, "%s() WATCHDOG_TIMEOUT!\n", __FUNCTION__);
|
|
|
/* Go back to disconnected mode, keep the socket waiting */
|
/* Go back to disconnected mode, keep the socket waiting */
|
self->dlsap_sel = LSAP_ANY;
|
self->dlsap_sel = LSAP_ANY;
|
if(self->conn_skb)
|
if(self->conn_skb)
|
dev_kfree_skb(self->conn_skb);
|
dev_kfree_skb(self->conn_skb);
|
self->conn_skb = NULL;
|
self->conn_skb = NULL;
|
irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
|
irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
|
break;
|
break;
|
default:
|
default:
|
IRDA_DEBUG(0, "%s(), Unknown event %s on LSAP %#02x\n",
|
IRDA_DEBUG(0, "%s(), Unknown event %s on LSAP %#02x\n",
|
__FUNCTION__, irlmp_event[event], self->slsap_sel);
|
__FUNCTION__, irlmp_event[event], self->slsap_sel);
|
if (skb)
|
if (skb)
|
dev_kfree_skb(skb);
|
dev_kfree_skb(skb);
|
break;
|
break;
|
}
|
}
|
return ret;
|
return ret;
|
}
|
}
|
|
|
/*
|
/*
|
* Function irlmp_state_dtr (self, event, skb)
|
* Function irlmp_state_dtr (self, event, skb)
|
*
|
*
|
* DATA_TRANSFER_READY
|
* DATA_TRANSFER_READY
|
*
|
*
|
*/
|
*/
|
static int irlmp_state_dtr(struct lsap_cb *self, IRLMP_EVENT event,
|
static int irlmp_state_dtr(struct lsap_cb *self, IRLMP_EVENT event,
|
struct sk_buff *skb)
|
struct sk_buff *skb)
|
{
|
{
|
LM_REASON reason;
|
LM_REASON reason;
|
int ret = 0;
|
int ret = 0;
|
|
|
IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
|
IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
|
|
|
ASSERT(self != NULL, return -1;);
|
ASSERT(self != NULL, return -1;);
|
ASSERT(self->magic == LMP_LSAP_MAGIC, return -1;);
|
ASSERT(self->magic == LMP_LSAP_MAGIC, return -1;);
|
ASSERT(self->lap != NULL, return -1;);
|
ASSERT(self->lap != NULL, return -1;);
|
|
|
switch (event) {
|
switch (event) {
|
case LM_DATA_REQUEST: /* Optimize for the common case */
|
case LM_DATA_REQUEST: /* Optimize for the common case */
|
irlmp_send_data_pdu(self->lap, self->dlsap_sel,
|
irlmp_send_data_pdu(self->lap, self->dlsap_sel,
|
self->slsap_sel, FALSE, skb);
|
self->slsap_sel, FALSE, skb);
|
break;
|
break;
|
case LM_DATA_INDICATION: /* Optimize for the common case */
|
case LM_DATA_INDICATION: /* Optimize for the common case */
|
irlmp_data_indication(self, skb);
|
irlmp_data_indication(self, skb);
|
break;
|
break;
|
case LM_UDATA_REQUEST:
|
case LM_UDATA_REQUEST:
|
ASSERT(skb != NULL, return -1;);
|
ASSERT(skb != NULL, return -1;);
|
irlmp_send_data_pdu(self->lap, self->dlsap_sel,
|
irlmp_send_data_pdu(self->lap, self->dlsap_sel,
|
self->slsap_sel, TRUE, skb);
|
self->slsap_sel, TRUE, skb);
|
break;
|
break;
|
case LM_UDATA_INDICATION:
|
case LM_UDATA_INDICATION:
|
irlmp_udata_indication(self, skb);
|
irlmp_udata_indication(self, skb);
|
break;
|
break;
|
case LM_CONNECT_REQUEST:
|
case LM_CONNECT_REQUEST:
|
IRDA_DEBUG(0, "%s(), LM_CONNECT_REQUEST, "
|
IRDA_DEBUG(0, "%s(), LM_CONNECT_REQUEST, "
|
"error, LSAP already connected\n", __FUNCTION__);
|
"error, LSAP already connected\n", __FUNCTION__);
|
/* Keep state */
|
/* Keep state */
|
break;
|
break;
|
case LM_CONNECT_RESPONSE:
|
case LM_CONNECT_RESPONSE:
|
IRDA_DEBUG(0, "%s(), LM_CONNECT_RESPONSE, "
|
IRDA_DEBUG(0, "%s(), LM_CONNECT_RESPONSE, "
|
"error, LSAP allready connected\n", __FUNCTION__);
|
"error, LSAP allready connected\n", __FUNCTION__);
|
/* Keep state */
|
/* Keep state */
|
break;
|
break;
|
case LM_DISCONNECT_REQUEST:
|
case LM_DISCONNECT_REQUEST:
|
irlmp_send_lcf_pdu(self->lap, self->dlsap_sel, self->slsap_sel,
|
irlmp_send_lcf_pdu(self->lap, self->dlsap_sel, self->slsap_sel,
|
DISCONNECT, skb);
|
DISCONNECT, skb);
|
irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
|
irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
|
|
|
/* Try to close the LAP connection if its still there */
|
/* Try to close the LAP connection if its still there */
|
if (self->lap) {
|
if (self->lap) {
|
IRDA_DEBUG(4, "%s(), trying to close IrLAP\n", __FUNCTION__);
|
IRDA_DEBUG(4, "%s(), trying to close IrLAP\n", __FUNCTION__);
|
irlmp_do_lap_event(self->lap,
|
irlmp_do_lap_event(self->lap,
|
LM_LAP_DISCONNECT_REQUEST,
|
LM_LAP_DISCONNECT_REQUEST,
|
NULL);
|
NULL);
|
}
|
}
|
break;
|
break;
|
case LM_LAP_DISCONNECT_INDICATION:
|
case LM_LAP_DISCONNECT_INDICATION:
|
irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
|
irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
|
|
|
reason = irlmp_convert_lap_reason(self->lap->reason);
|
reason = irlmp_convert_lap_reason(self->lap->reason);
|
|
|
irlmp_disconnect_indication(self, reason, NULL);
|
irlmp_disconnect_indication(self, reason, NULL);
|
break;
|
break;
|
case LM_DISCONNECT_INDICATION:
|
case LM_DISCONNECT_INDICATION:
|
irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
|
irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
|
|
|
ASSERT(self->lap != NULL, return -1;);
|
ASSERT(self->lap != NULL, return -1;);
|
ASSERT(self->lap->magic == LMP_LAP_MAGIC, return -1;);
|
ASSERT(self->lap->magic == LMP_LAP_MAGIC, return -1;);
|
|
|
ASSERT(skb != NULL, return -1;);
|
ASSERT(skb != NULL, return -1;);
|
ASSERT(skb->len > 3, return -1;);
|
ASSERT(skb->len > 3, return -1;);
|
reason = skb->data[3];
|
reason = skb->data[3];
|
|
|
/* Try to close the LAP connection */
|
/* Try to close the LAP connection */
|
IRDA_DEBUG(4, "%ss(), trying to close IrLAP\n", __FUNCTION__);
|
IRDA_DEBUG(4, "%ss(), trying to close IrLAP\n", __FUNCTION__);
|
irlmp_do_lap_event(self->lap, LM_LAP_DISCONNECT_REQUEST, NULL);
|
irlmp_do_lap_event(self->lap, LM_LAP_DISCONNECT_REQUEST, NULL);
|
|
|
irlmp_disconnect_indication(self, reason, skb);
|
irlmp_disconnect_indication(self, reason, skb);
|
break;
|
break;
|
default:
|
default:
|
IRDA_DEBUG(0, "%s(), Unknown event %s on LSAP %#02x\n",
|
IRDA_DEBUG(0, "%s(), Unknown event %s on LSAP %#02x\n",
|
__FUNCTION__, irlmp_event[event], self->slsap_sel);
|
__FUNCTION__, irlmp_event[event], self->slsap_sel);
|
if (skb)
|
if (skb)
|
dev_kfree_skb(skb);
|
dev_kfree_skb(skb);
|
break;
|
break;
|
}
|
}
|
return ret;
|
return ret;
|
}
|
}
|
|
|
/*
|
/*
|
* Function irlmp_state_setup (event, skb, info)
|
* Function irlmp_state_setup (event, skb, info)
|
*
|
*
|
* SETUP, Station Control has set up the underlying IrLAP connection.
|
* SETUP, Station Control has set up the underlying IrLAP connection.
|
* An LSAP connection request has been transmitted to the peer
|
* An LSAP connection request has been transmitted to the peer
|
* LSAP-Connection Control FSM and we are awaiting reply.
|
* LSAP-Connection Control FSM and we are awaiting reply.
|
*/
|
*/
|
static int irlmp_state_setup(struct lsap_cb *self, IRLMP_EVENT event,
|
static int irlmp_state_setup(struct lsap_cb *self, IRLMP_EVENT event,
|
struct sk_buff *skb)
|
struct sk_buff *skb)
|
{
|
{
|
LM_REASON reason;
|
LM_REASON reason;
|
int ret = 0;
|
int ret = 0;
|
|
|
ASSERT(self != NULL, return -1;);
|
ASSERT(self != NULL, return -1;);
|
ASSERT(self->magic == LMP_LSAP_MAGIC, return -1;);
|
ASSERT(self->magic == LMP_LSAP_MAGIC, return -1;);
|
|
|
IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
|
IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
|
|
|
switch (event) {
|
switch (event) {
|
case LM_CONNECT_CONFIRM:
|
case LM_CONNECT_CONFIRM:
|
irlmp_next_lsap_state(self, LSAP_DATA_TRANSFER_READY);
|
irlmp_next_lsap_state(self, LSAP_DATA_TRANSFER_READY);
|
|
|
del_timer(&self->watchdog_timer);
|
del_timer(&self->watchdog_timer);
|
|
|
irlmp_connect_confirm(self, skb);
|
irlmp_connect_confirm(self, skb);
|
break;
|
break;
|
case LM_DISCONNECT_INDICATION:
|
case LM_DISCONNECT_INDICATION:
|
irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
|
irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
|
|
|
ASSERT(self->lap != NULL, return -1;);
|
ASSERT(self->lap != NULL, return -1;);
|
ASSERT(self->lap->magic == LMP_LAP_MAGIC, return -1;);
|
ASSERT(self->lap->magic == LMP_LAP_MAGIC, return -1;);
|
|
|
ASSERT(skb != NULL, return -1;);
|
ASSERT(skb != NULL, return -1;);
|
ASSERT(skb->len > 3, return -1;);
|
ASSERT(skb->len > 3, return -1;);
|
reason = skb->data[3];
|
reason = skb->data[3];
|
|
|
/* Try to close the LAP connection */
|
/* Try to close the LAP connection */
|
IRDA_DEBUG(4, "%s(), trying to close IrLAP\n", __FUNCTION__);
|
IRDA_DEBUG(4, "%s(), trying to close IrLAP\n", __FUNCTION__);
|
irlmp_do_lap_event(self->lap, LM_LAP_DISCONNECT_REQUEST, NULL);
|
irlmp_do_lap_event(self->lap, LM_LAP_DISCONNECT_REQUEST, NULL);
|
|
|
irlmp_disconnect_indication(self, reason, skb);
|
irlmp_disconnect_indication(self, reason, skb);
|
break;
|
break;
|
case LM_LAP_DISCONNECT_INDICATION:
|
case LM_LAP_DISCONNECT_INDICATION:
|
irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
|
irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
|
|
|
del_timer(&self->watchdog_timer);
|
del_timer(&self->watchdog_timer);
|
|
|
ASSERT(self->lap != NULL, return -1;);
|
ASSERT(self->lap != NULL, return -1;);
|
ASSERT(self->lap->magic == LMP_LAP_MAGIC, return -1;);
|
ASSERT(self->lap->magic == LMP_LAP_MAGIC, return -1;);
|
|
|
reason = irlmp_convert_lap_reason(self->lap->reason);
|
reason = irlmp_convert_lap_reason(self->lap->reason);
|
|
|
irlmp_disconnect_indication(self, reason, skb);
|
irlmp_disconnect_indication(self, reason, skb);
|
break;
|
break;
|
case LM_WATCHDOG_TIMEOUT:
|
case LM_WATCHDOG_TIMEOUT:
|
IRDA_DEBUG(0, "%s() WATCHDOG_TIMEOUT!\n", __FUNCTION__);
|
IRDA_DEBUG(0, "%s() WATCHDOG_TIMEOUT!\n", __FUNCTION__);
|
|
|
ASSERT(self->lap != NULL, return -1;);
|
ASSERT(self->lap != NULL, return -1;);
|
irlmp_do_lap_event(self->lap, LM_LAP_DISCONNECT_REQUEST, NULL);
|
irlmp_do_lap_event(self->lap, LM_LAP_DISCONNECT_REQUEST, NULL);
|
irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
|
irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
|
|
|
irlmp_disconnect_indication(self, LM_CONNECT_FAILURE, NULL);
|
irlmp_disconnect_indication(self, LM_CONNECT_FAILURE, NULL);
|
break;
|
break;
|
default:
|
default:
|
IRDA_DEBUG(0, "%s(), Unknown event %s on LSAP %#02x\n",
|
IRDA_DEBUG(0, "%s(), Unknown event %s on LSAP %#02x\n",
|
__FUNCTION__, irlmp_event[event], self->slsap_sel);
|
__FUNCTION__, irlmp_event[event], self->slsap_sel);
|
if (skb)
|
if (skb)
|
dev_kfree_skb(skb);
|
dev_kfree_skb(skb);
|
break;
|
break;
|
}
|
}
|
return ret;
|
return ret;
|
}
|
}
|
|
|
/*
|
/*
|
* Function irlmp_state_setup_pend (event, skb, info)
|
* Function irlmp_state_setup_pend (event, skb, info)
|
*
|
*
|
* SETUP_PEND, An LM_CONNECT_REQUEST has been received from the service
|
* SETUP_PEND, An LM_CONNECT_REQUEST has been received from the service
|
* user to set up an LSAP connection. A request has been sent to the
|
* user to set up an LSAP connection. A request has been sent to the
|
* LAP FSM to set up the underlying IrLAP connection, and we
|
* LAP FSM to set up the underlying IrLAP connection, and we
|
* are awaiting confirm.
|
* are awaiting confirm.
|
*/
|
*/
|
static int irlmp_state_setup_pend(struct lsap_cb *self, IRLMP_EVENT event,
|
static int irlmp_state_setup_pend(struct lsap_cb *self, IRLMP_EVENT event,
|
struct sk_buff *skb)
|
struct sk_buff *skb)
|
{
|
{
|
LM_REASON reason;
|
LM_REASON reason;
|
int ret = 0;
|
int ret = 0;
|
|
|
IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
|
IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
|
|
|
ASSERT(self != NULL, return -1;);
|
ASSERT(self != NULL, return -1;);
|
ASSERT(irlmp != NULL, return -1;);
|
ASSERT(irlmp != NULL, return -1;);
|
|
|
switch (event) {
|
switch (event) {
|
case LM_LAP_CONNECT_CONFIRM:
|
case LM_LAP_CONNECT_CONFIRM:
|
ASSERT(self->conn_skb != NULL, return -1;);
|
ASSERT(self->conn_skb != NULL, return -1;);
|
|
|
skb = self->conn_skb;
|
skb = self->conn_skb;
|
self->conn_skb = NULL;
|
self->conn_skb = NULL;
|
|
|
irlmp_send_lcf_pdu(self->lap, self->dlsap_sel,
|
irlmp_send_lcf_pdu(self->lap, self->dlsap_sel,
|
self->slsap_sel, CONNECT_CMD, skb);
|
self->slsap_sel, CONNECT_CMD, skb);
|
|
|
irlmp_next_lsap_state(self, LSAP_SETUP);
|
irlmp_next_lsap_state(self, LSAP_SETUP);
|
break;
|
break;
|
case LM_WATCHDOG_TIMEOUT:
|
case LM_WATCHDOG_TIMEOUT:
|
IRDA_DEBUG(0, "%s() : WATCHDOG_TIMEOUT !\n", __FUNCTION__);
|
IRDA_DEBUG(0, "%s() : WATCHDOG_TIMEOUT !\n", __FUNCTION__);
|
|
|
ASSERT(self->lap != NULL, return -1;);
|
ASSERT(self->lap != NULL, return -1;);
|
irlmp_do_lap_event(self->lap, LM_LAP_DISCONNECT_REQUEST, NULL);
|
irlmp_do_lap_event(self->lap, LM_LAP_DISCONNECT_REQUEST, NULL);
|
irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
|
irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
|
|
|
irlmp_disconnect_indication(self, LM_CONNECT_FAILURE, NULL);
|
irlmp_disconnect_indication(self, LM_CONNECT_FAILURE, NULL);
|
break;
|
break;
|
case LM_LAP_DISCONNECT_INDICATION: /* LS_Disconnect.indication */
|
case LM_LAP_DISCONNECT_INDICATION: /* LS_Disconnect.indication */
|
del_timer( &self->watchdog_timer);
|
del_timer( &self->watchdog_timer);
|
|
|
irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
|
irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
|
|
|
reason = irlmp_convert_lap_reason(self->lap->reason);
|
reason = irlmp_convert_lap_reason(self->lap->reason);
|
|
|
irlmp_disconnect_indication(self, reason, NULL);
|
irlmp_disconnect_indication(self, reason, NULL);
|
break;
|
break;
|
default:
|
default:
|
IRDA_DEBUG(0, "%s(), Unknown event %s on LSAP %#02x\n",
|
IRDA_DEBUG(0, "%s(), Unknown event %s on LSAP %#02x\n",
|
__FUNCTION__, irlmp_event[event], self->slsap_sel);
|
__FUNCTION__, irlmp_event[event], self->slsap_sel);
|
if (skb)
|
if (skb)
|
dev_kfree_skb(skb);
|
dev_kfree_skb(skb);
|
break;
|
break;
|
}
|
}
|
return ret;
|
return ret;
|
}
|
}
|
|
|
