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-rw-r--r--net/irda/irlmp_event.c886
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diff --git a/net/irda/irlmp_event.c b/net/irda/irlmp_event.c
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index e306cf2c1e04..000000000000
--- a/net/irda/irlmp_event.c
+++ /dev/null
@@ -1,886 +0,0 @@
-/*********************************************************************
- *
- * Filename: irlmp_event.c
- * Version: 0.8
- * Description: An IrDA LMP event driver for Linux
- * Status: Experimental.
- * Author: Dag Brattli <dagb@cs.uit.no>
- * Created at: Mon Aug 4 20:40:53 1997
- * Modified at: Tue Dec 14 23:04:16 1999
- * Modified by: Dag Brattli <dagb@cs.uit.no>
- *
- * Copyright (c) 1998-1999 Dag Brattli <dagb@cs.uit.no>,
- * All Rights Reserved.
- * Copyright (c) 2000-2003 Jean Tourrilhes <jt@hpl.hp.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * Neither Dag Brattli nor University of Tromsø admit liability nor
- * provide warranty for any of this software. This material is
- * provided "AS-IS" and at no charge.
- *
- ********************************************************************/
-
-#include <linux/kernel.h>
-
-#include <net/irda/irda.h>
-#include <net/irda/timer.h>
-#include <net/irda/irlap.h>
-#include <net/irda/irlmp.h>
-#include <net/irda/irlmp_frame.h>
-#include <net/irda/irlmp_event.h>
-
-const char *const irlmp_state[] = {
- "LAP_STANDBY",
- "LAP_U_CONNECT",
- "LAP_ACTIVE",
-};
-
-const char *const irlsap_state[] = {
- "LSAP_DISCONNECTED",
- "LSAP_CONNECT",
- "LSAP_CONNECT_PEND",
- "LSAP_DATA_TRANSFER_READY",
- "LSAP_SETUP",
- "LSAP_SETUP_PEND",
-};
-
-static const char *const irlmp_event[] __maybe_unused = {
- "LM_CONNECT_REQUEST",
- "LM_CONNECT_CONFIRM",
- "LM_CONNECT_RESPONSE",
- "LM_CONNECT_INDICATION",
-
- "LM_DISCONNECT_INDICATION",
- "LM_DISCONNECT_REQUEST",
-
- "LM_DATA_REQUEST",
- "LM_UDATA_REQUEST",
- "LM_DATA_INDICATION",
- "LM_UDATA_INDICATION",
-
- "LM_WATCHDOG_TIMEOUT",
-
- /* IrLAP events */
- "LM_LAP_CONNECT_REQUEST",
- "LM_LAP_CONNECT_INDICATION",
- "LM_LAP_CONNECT_CONFIRM",
- "LM_LAP_DISCONNECT_INDICATION",
- "LM_LAP_DISCONNECT_REQUEST",
- "LM_LAP_DISCOVERY_REQUEST",
- "LM_LAP_DISCOVERY_CONFIRM",
- "LM_LAP_IDLE_TIMEOUT",
-};
-
-/* LAP Connection control proto declarations */
-static void irlmp_state_standby (struct lap_cb *, IRLMP_EVENT,
- struct sk_buff *);
-static void irlmp_state_u_connect(struct lap_cb *, IRLMP_EVENT,
- struct sk_buff *);
-static void irlmp_state_active (struct lap_cb *, IRLMP_EVENT,
- struct sk_buff *);
-
-/* LSAP Connection control proto declarations */
-static int irlmp_state_disconnected(struct lsap_cb *, IRLMP_EVENT,
- struct sk_buff *);
-static int irlmp_state_connect (struct lsap_cb *, IRLMP_EVENT,
- struct sk_buff *);
-static int irlmp_state_connect_pend(struct lsap_cb *, IRLMP_EVENT,
- struct sk_buff *);
-static int irlmp_state_dtr (struct lsap_cb *, IRLMP_EVENT,
- struct sk_buff *);
-static int irlmp_state_setup (struct lsap_cb *, IRLMP_EVENT,
- struct sk_buff *);
-static int irlmp_state_setup_pend (struct lsap_cb *, IRLMP_EVENT,
- struct sk_buff *);
-
-static void (*lap_state[]) (struct lap_cb *, IRLMP_EVENT, struct sk_buff *) =
-{
- irlmp_state_standby,
- irlmp_state_u_connect,
- irlmp_state_active,
-};
-
-static int (*lsap_state[])( struct lsap_cb *, IRLMP_EVENT, struct sk_buff *) =
-{
- irlmp_state_disconnected,
- irlmp_state_connect,
- irlmp_state_connect_pend,
- irlmp_state_dtr,
- irlmp_state_setup,
- irlmp_state_setup_pend
-};
-
-static inline void irlmp_next_lap_state(struct lap_cb *self,
- IRLMP_STATE state)
-{
- /*
- pr_debug("%s(), LMP LAP = %s\n", __func__, irlmp_state[state]);
- */
- self->lap_state = state;
-}
-
-static inline void irlmp_next_lsap_state(struct lsap_cb *self,
- LSAP_STATE state)
-{
- /*
- IRDA_ASSERT(self != NULL, return;);
- pr_debug("%s(), LMP LSAP = %s\n", __func__, irlsap_state[state]);
- */
- self->lsap_state = state;
-}
-
-/* Do connection control events */
-int irlmp_do_lsap_event(struct lsap_cb *self, IRLMP_EVENT event,
- struct sk_buff *skb)
-{
- IRDA_ASSERT(self != NULL, return -1;);
- IRDA_ASSERT(self->magic == LMP_LSAP_MAGIC, return -1;);
-
- pr_debug("%s(), EVENT = %s, STATE = %s\n",
- __func__, irlmp_event[event], irlsap_state[self->lsap_state]);
-
- return (*lsap_state[self->lsap_state]) (self, event, skb);
-}
-
-/*
- * Function do_lap_event (event, skb, info)
- *
- * Do IrLAP control events
- *
- */
-void irlmp_do_lap_event(struct lap_cb *self, IRLMP_EVENT event,
- struct sk_buff *skb)
-{
- IRDA_ASSERT(self != NULL, return;);
- IRDA_ASSERT(self->magic == LMP_LAP_MAGIC, return;);
-
- pr_debug("%s(), EVENT = %s, STATE = %s\n", __func__,
- irlmp_event[event],
- irlmp_state[self->lap_state]);
-
- (*lap_state[self->lap_state]) (self, event, skb);
-}
-
-void irlmp_discovery_timer_expired(void *data)
-{
- /* We always cleanup the log (active & passive discovery) */
- irlmp_do_expiry();
-
- irlmp_do_discovery(sysctl_discovery_slots);
-
- /* Restart timer */
- irlmp_start_discovery_timer(irlmp, sysctl_discovery_timeout * HZ);
-}
-
-void irlmp_watchdog_timer_expired(void *data)
-{
- struct lsap_cb *self = (struct lsap_cb *) data;
-
- IRDA_ASSERT(self != NULL, return;);
- IRDA_ASSERT(self->magic == LMP_LSAP_MAGIC, return;);
-
- irlmp_do_lsap_event(self, LM_WATCHDOG_TIMEOUT, NULL);
-}
-
-void irlmp_idle_timer_expired(void *data)
-{
- struct lap_cb *self = (struct lap_cb *) data;
-
- IRDA_ASSERT(self != NULL, return;);
- IRDA_ASSERT(self->magic == LMP_LAP_MAGIC, return;);
-
- irlmp_do_lap_event(self, LM_LAP_IDLE_TIMEOUT, NULL);
-}
-
-/*
- * Send an event on all LSAPs attached to this LAP.
- */
-static inline void
-irlmp_do_all_lsap_event(hashbin_t * lsap_hashbin,
- IRLMP_EVENT event)
-{
- struct lsap_cb *lsap;
- struct lsap_cb *lsap_next;
-
- /* Note : this function use the new hashbin_find_next()
- * function, instead of the old hashbin_get_next().
- * This make sure that we are always pointing one lsap
- * ahead, so that if the current lsap is removed as the
- * result of sending the event, we don't care.
- * Also, as we store the context ourselves, if an enumeration
- * of the same lsap hashbin happens as the result of sending the
- * event, we don't care.
- * The only problem is if the next lsap is removed. In that case,
- * hashbin_find_next() will return NULL and we will abort the
- * enumeration. - Jean II */
-
- /* Also : we don't accept any skb in input. We can *NOT* pass
- * the same skb to multiple clients safely, we would need to
- * skb_clone() it. - Jean II */
-
- lsap = (struct lsap_cb *) hashbin_get_first(lsap_hashbin);
-
- while (NULL != hashbin_find_next(lsap_hashbin,
- (long) lsap,
- NULL,
- (void *) &lsap_next) ) {
- irlmp_do_lsap_event(lsap, event, NULL);
- lsap = lsap_next;
- }
-}
-
-/*********************************************************************
- *
- * LAP connection control states
- *
- ********************************************************************/
-
-/*
- * Function irlmp_state_standby (event, skb, info)
- *
- * STANDBY, The IrLAP connection does not exist.
- *
- */
-static void irlmp_state_standby(struct lap_cb *self, IRLMP_EVENT event,
- struct sk_buff *skb)
-{
- IRDA_ASSERT(self->irlap != NULL, return;);
-
- switch (event) {
- case LM_LAP_DISCOVERY_REQUEST:
- /* irlmp_next_station_state( LMP_DISCOVER); */
-
- irlap_discovery_request(self->irlap, &irlmp->discovery_cmd);
- break;
- case LM_LAP_CONNECT_INDICATION:
- /* It's important to switch state first, to avoid IrLMP to
- * think that the link is free since IrLMP may then start
- * discovery before the connection is properly set up. DB.
- */
- irlmp_next_lap_state(self, LAP_ACTIVE);
-
- /* Just accept connection TODO, this should be fixed */
- irlap_connect_response(self->irlap, skb);
- break;
- case LM_LAP_CONNECT_REQUEST:
- pr_debug("%s() LS_CONNECT_REQUEST\n", __func__);
-
- irlmp_next_lap_state(self, LAP_U_CONNECT);
-
- /* FIXME: need to set users requested QoS */
- irlap_connect_request(self->irlap, self->daddr, NULL, 0);
- break;
- case LM_LAP_DISCONNECT_INDICATION:
- pr_debug("%s(), Error LM_LAP_DISCONNECT_INDICATION\n",
- __func__);
-
- irlmp_next_lap_state(self, LAP_STANDBY);
- break;
- default:
- pr_debug("%s(), Unknown event %s\n",
- __func__, irlmp_event[event]);
- break;
- }
-}
-
-/*
- * Function irlmp_state_u_connect (event, skb, info)
- *
- * 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
- * IrLAP connection. We are now waiting response from IrLAP.
- * */
-static void irlmp_state_u_connect(struct lap_cb *self, IRLMP_EVENT event,
- struct sk_buff *skb)
-{
- pr_debug("%s(), event=%s\n", __func__, irlmp_event[event]);
-
- switch (event) {
- case LM_LAP_CONNECT_INDICATION:
- /* It's important to switch state first, to avoid IrLMP to
- * think that the link is free since IrLMP may then start
- * discovery before the connection is properly set up. DB.
- */
- irlmp_next_lap_state(self, LAP_ACTIVE);
-
- /* Just accept connection TODO, this should be fixed */
- irlap_connect_response(self->irlap, skb);
-
- /* Tell LSAPs that they can start sending data */
- irlmp_do_all_lsap_event(self->lsaps, LM_LAP_CONNECT_CONFIRM);
-
- /* Note : by the time we get there (LAP retries and co),
- * the lsaps may already have gone. This avoid getting stuck
- * forever in LAP_ACTIVE state - Jean II */
- if (HASHBIN_GET_SIZE(self->lsaps) == 0) {
- pr_debug("%s() NO LSAPs !\n", __func__);
- irlmp_start_idle_timer(self, LM_IDLE_TIMEOUT);
- }
- break;
- case LM_LAP_CONNECT_REQUEST:
- /* Already trying to connect */
- break;
- case LM_LAP_CONNECT_CONFIRM:
- /* For all lsap_ce E Associated do LS_Connect_confirm */
- irlmp_next_lap_state(self, LAP_ACTIVE);
-
- /* Tell LSAPs that they can start sending data */
- irlmp_do_all_lsap_event(self->lsaps, LM_LAP_CONNECT_CONFIRM);
-
- /* Note : by the time we get there (LAP retries and co),
- * the lsaps may already have gone. This avoid getting stuck
- * forever in LAP_ACTIVE state - Jean II */
- if (HASHBIN_GET_SIZE(self->lsaps) == 0) {
- pr_debug("%s() NO LSAPs !\n", __func__);
- irlmp_start_idle_timer(self, LM_IDLE_TIMEOUT);
- }
- break;
- case LM_LAP_DISCONNECT_INDICATION:
- pr_debug("%s(), LM_LAP_DISCONNECT_INDICATION\n", __func__);
- irlmp_next_lap_state(self, LAP_STANDBY);
-
- /* Send disconnect event to all LSAPs using this link */
- irlmp_do_all_lsap_event(self->lsaps,
- LM_LAP_DISCONNECT_INDICATION);
- break;
- case LM_LAP_DISCONNECT_REQUEST:
- pr_debug("%s(), LM_LAP_DISCONNECT_REQUEST\n", __func__);
-
- /* One of the LSAP did timeout or was closed, if it was
- * the last one, try to get out of here - Jean II */
- if (HASHBIN_GET_SIZE(self->lsaps) <= 1) {
- irlap_disconnect_request(self->irlap);
- }
- break;
- default:
- pr_debug("%s(), Unknown event %s\n",
- __func__, irlmp_event[event]);
- break;
- }
-}
-
-/*
- * Function irlmp_state_active (event, skb, info)
- *
- * ACTIVE, IrLAP connection is active
- *
- */
-static void irlmp_state_active(struct lap_cb *self, IRLMP_EVENT event,
- struct sk_buff *skb)
-{
- switch (event) {
- case LM_LAP_CONNECT_REQUEST:
- pr_debug("%s(), LS_CONNECT_REQUEST\n", __func__);
-
- /*
- * IrLAP may have a pending disconnect. We tried to close
- * IrLAP, but it was postponed because the link was
- * busy or we were still sending packets. As we now
- * need it, make sure it stays on. Jean II
- */
- irlap_clear_disconnect(self->irlap);
-
- /*
- * LAP connection already active, just bounce back! Since we
- * 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
- * do anyway.
- */
- irlmp_do_all_lsap_event(self->lsaps, LM_LAP_CONNECT_CONFIRM);
-
- /* Needed by connect indication */
- irlmp_do_all_lsap_event(irlmp->unconnected_lsaps,
- LM_LAP_CONNECT_CONFIRM);
- /* Keep state */
- break;
- case LM_LAP_DISCONNECT_REQUEST:
- /*
- * Need to find out if we should close IrLAP or not. If there
- * is only one LSAP connection left on this link, that LSAP
- * must be the one that tries to close IrLAP. It will be
- * removed later and moved to the list of unconnected LSAPs
- */
- if (HASHBIN_GET_SIZE(self->lsaps) > 0) {
- /* Timer value is checked in irsysctl - Jean II */
- irlmp_start_idle_timer(self, sysctl_lap_keepalive_time * HZ / 1000);
- } else {
- /* No more connections, so close IrLAP */
-
- /* We don't want to change state just yet, because
- * we want to reflect accurately the real state of
- * the LAP, not the state we wish it was in,
- * so that we don't lose LM_LAP_CONNECT_REQUEST.
- * In some cases, IrLAP won't close the LAP
- * immediately. For example, it might still be
- * retrying packets or waiting for the pf bit.
- * As the LAP always send a DISCONNECT_INDICATION
- * in PCLOSE or SCLOSE, just change state on that.
- * Jean II */
- irlap_disconnect_request(self->irlap);
- }
- break;
- case LM_LAP_IDLE_TIMEOUT:
- if (HASHBIN_GET_SIZE(self->lsaps) == 0) {
- /* Same reasoning as above - keep state */
- irlap_disconnect_request(self->irlap);
- }
- break;
- case LM_LAP_DISCONNECT_INDICATION:
- irlmp_next_lap_state(self, LAP_STANDBY);
-
- /* In some case, at this point our side has already closed
- * all lsaps, and we are waiting for the idle_timer to
- * expire. If another device reconnect immediately, the
- * idle timer will expire in the midle of the connection
- * initialisation, screwing up things a lot...
- * Therefore, we must stop the timer... */
- irlmp_stop_idle_timer(self);
-
- /*
- * Inform all connected LSAP's using this link
- */
- irlmp_do_all_lsap_event(self->lsaps,
- LM_LAP_DISCONNECT_INDICATION);
-
- /* Force an expiry of the discovery log.
- * Now that the LAP is free, the system may attempt to
- * connect to another device. Unfortunately, our entries
- * are stale. There is a small window (<3s) before the
- * normal discovery will run and where irlmp_connect_request()
- * can get the wrong info, so make sure things get
- * cleaned *NOW* ;-) - Jean II */
- irlmp_do_expiry();
- break;
- default:
- pr_debug("%s(), Unknown event %s\n",
- __func__, irlmp_event[event]);
- break;
- }
-}
-
-/*********************************************************************
- *
- * LSAP connection control states
- *
- ********************************************************************/
-
-/*
- * Function irlmp_state_disconnected (event, skb, info)
- *
- * DISCONNECTED
- *
- */
-static int irlmp_state_disconnected(struct lsap_cb *self, IRLMP_EVENT event,
- struct sk_buff *skb)
-{
- int ret = 0;
-
- IRDA_ASSERT(self != NULL, return -1;);
- IRDA_ASSERT(self->magic == LMP_LSAP_MAGIC, return -1;);
-
- switch (event) {
-#ifdef CONFIG_IRDA_ULTRA
- case LM_UDATA_INDICATION:
- /* This is most bizarre. Those packets are aka unreliable
- * connected, aka IrLPT or SOCK_DGRAM/IRDAPROTO_UNITDATA.
- * Why do we pass them as Ultra ??? Jean II */
- irlmp_connless_data_indication(self, skb);
- break;
-#endif /* CONFIG_IRDA_ULTRA */
- case LM_CONNECT_REQUEST:
- pr_debug("%s(), LM_CONNECT_REQUEST\n", __func__);
-
- if (self->conn_skb) {
- net_warn_ratelimited("%s: busy with another request!\n",
- __func__);
- return -EBUSY;
- }
- /* Don't forget to refcount it (see irlmp_connect_request()) */
- skb_get(skb);
- self->conn_skb = skb;
-
- irlmp_next_lsap_state(self, LSAP_SETUP_PEND);
-
- /* Start watchdog timer (5 secs for now) */
- irlmp_start_watchdog_timer(self, 5*HZ);
-
- irlmp_do_lap_event(self->lap, LM_LAP_CONNECT_REQUEST, NULL);
- break;
- case LM_CONNECT_INDICATION:
- if (self->conn_skb) {
- net_warn_ratelimited("%s: busy with another request!\n",
- __func__);
- return -EBUSY;
- }
- /* Don't forget to refcount it (see irlap_driver_rcv()) */
- skb_get(skb);
- self->conn_skb = skb;
-
- irlmp_next_lsap_state(self, LSAP_CONNECT_PEND);
-
- /* Start watchdog timer
- * This is not mentionned in the spec, but there is a rare
- * race condition that can get the socket stuck.
- * If we receive this event while our LAP is closing down,
- * the LM_LAP_CONNECT_REQUEST get lost and we get stuck in
- * CONNECT_PEND state forever.
- * The other cause of getting stuck down there is if the
- * higher layer never reply to the CONNECT_INDICATION.
- * Anyway, it make sense to make sure that we always have
- * a backup plan. 1 second is plenty (should be immediate).
- * Jean II */
- irlmp_start_watchdog_timer(self, 1*HZ);
-
- irlmp_do_lap_event(self->lap, LM_LAP_CONNECT_REQUEST, NULL);
- break;
- default:
- pr_debug("%s(), Unknown event %s on LSAP %#02x\n",
- __func__, irlmp_event[event], self->slsap_sel);
- break;
- }
- return ret;
-}
-
-/*
- * Function irlmp_state_connect (self, event, skb)
- *
- * CONNECT
- *
- */
-static int irlmp_state_connect(struct lsap_cb *self, IRLMP_EVENT event,
- struct sk_buff *skb)
-{
- struct lsap_cb *lsap;
- int ret = 0;
-
- IRDA_ASSERT(self != NULL, return -1;);
- IRDA_ASSERT(self->magic == LMP_LSAP_MAGIC, return -1;);
-
- switch (event) {
- case LM_CONNECT_RESPONSE:
- /*
- * Bind this LSAP to the IrLAP link where the connect was
- * received
- */
- lsap = hashbin_remove(irlmp->unconnected_lsaps, (long) self,
- NULL);
-
- IRDA_ASSERT(lsap == self, return -1;);
- IRDA_ASSERT(self->lap != NULL, return -1;);
- IRDA_ASSERT(self->lap->lsaps != NULL, return -1;);
-
- hashbin_insert(self->lap->lsaps, (irda_queue_t *) self,
- (long) self, NULL);
-
- set_bit(0, &self->connected); /* TRUE */
-
- irlmp_send_lcf_pdu(self->lap, self->dlsap_sel,
- self->slsap_sel, CONNECT_CNF, skb);
-
- del_timer(&self->watchdog_timer);
-
- irlmp_next_lsap_state(self, LSAP_DATA_TRANSFER_READY);
- break;
- case LM_WATCHDOG_TIMEOUT:
- /* May happen, who knows...
- * Jean II */
- pr_debug("%s() WATCHDOG_TIMEOUT!\n", __func__);
-
- /* Disconnect, get out... - Jean II */
- self->lap = NULL;
- self->dlsap_sel = LSAP_ANY;
- irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
- break;
- default:
- /* LM_LAP_DISCONNECT_INDICATION : Should never happen, we
- * are *not* yet bound to the IrLAP link. Jean II */
- pr_debug("%s(), Unknown event %s on LSAP %#02x\n",
- __func__, irlmp_event[event], self->slsap_sel);
- break;
- }
- return ret;
-}
-
-/*
- * Function irlmp_state_connect_pend (event, skb, info)
- *
- * CONNECT_PEND
- *
- */
-static int irlmp_state_connect_pend(struct lsap_cb *self, IRLMP_EVENT event,
- struct sk_buff *skb)
-{
- struct sk_buff *tx_skb;
- int ret = 0;
-
- IRDA_ASSERT(self != NULL, return -1;);
- IRDA_ASSERT(self->magic == LMP_LSAP_MAGIC, return -1;);
-
- switch (event) {
- case LM_CONNECT_REQUEST:
- /* Keep state */
- break;
- case LM_CONNECT_RESPONSE:
- pr_debug("%s(), LM_CONNECT_RESPONSE, no indication issued yet\n",
- __func__);
- /* Keep state */
- break;
- case LM_DISCONNECT_REQUEST:
- pr_debug("%s(), LM_DISCONNECT_REQUEST, not yet bound to IrLAP connection\n",
- __func__);
- /* Keep state */
- break;
- case LM_LAP_CONNECT_CONFIRM:
- pr_debug("%s(), LS_CONNECT_CONFIRM\n", __func__);
- irlmp_next_lsap_state(self, LSAP_CONNECT);
-
- tx_skb = self->conn_skb;
- self->conn_skb = NULL;
-
- irlmp_connect_indication(self, tx_skb);
- /* Drop reference count - see irlmp_connect_indication(). */
- dev_kfree_skb(tx_skb);
- break;
- case LM_WATCHDOG_TIMEOUT:
- /* Will happen in some rare cases because of a race condition.
- * Just make sure we don't stay there forever...
- * Jean II */
- pr_debug("%s() WATCHDOG_TIMEOUT!\n", __func__);
-
- /* Go back to disconnected mode, keep the socket waiting */
- self->lap = NULL;
- self->dlsap_sel = LSAP_ANY;
- if(self->conn_skb)
- dev_kfree_skb(self->conn_skb);
- self->conn_skb = NULL;
- irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
- break;
- default:
- /* LM_LAP_DISCONNECT_INDICATION : Should never happen, we
- * are *not* yet bound to the IrLAP link. Jean II */
- pr_debug("%s(), Unknown event %s on LSAP %#02x\n",
- __func__, irlmp_event[event], self->slsap_sel);
- break;
- }
- return ret;
-}
-
-/*
- * Function irlmp_state_dtr (self, event, skb)
- *
- * DATA_TRANSFER_READY
- *
- */
-static int irlmp_state_dtr(struct lsap_cb *self, IRLMP_EVENT event,
- struct sk_buff *skb)
-{
- LM_REASON reason;
- int ret = 0;
-
- IRDA_ASSERT(self != NULL, return -1;);
- IRDA_ASSERT(self->magic == LMP_LSAP_MAGIC, return -1;);
- IRDA_ASSERT(self->lap != NULL, return -1;);
-
- switch (event) {
- case LM_DATA_REQUEST: /* Optimize for the common case */
- irlmp_send_data_pdu(self->lap, self->dlsap_sel,
- self->slsap_sel, FALSE, skb);
- break;
- case LM_DATA_INDICATION: /* Optimize for the common case */
- irlmp_data_indication(self, skb);
- break;
- case LM_UDATA_REQUEST:
- IRDA_ASSERT(skb != NULL, return -1;);
- irlmp_send_data_pdu(self->lap, self->dlsap_sel,
- self->slsap_sel, TRUE, skb);
- break;
- case LM_UDATA_INDICATION:
- irlmp_udata_indication(self, skb);
- break;
- case LM_CONNECT_REQUEST:
- pr_debug("%s(), LM_CONNECT_REQUEST, error, LSAP already connected\n",
- __func__);
- /* Keep state */
- break;
- case LM_CONNECT_RESPONSE:
- pr_debug("%s(), LM_CONNECT_RESPONSE, error, LSAP already connected\n",
- __func__);
- /* Keep state */
- break;
- case LM_DISCONNECT_REQUEST:
- irlmp_send_lcf_pdu(self->lap, self->dlsap_sel, self->slsap_sel,
- DISCONNECT, skb);
- irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
- /* Called only from irlmp_disconnect_request(), will
- * unbind from LAP over there. Jean II */
-
- /* Try to close the LAP connection if its still there */
- if (self->lap) {
- pr_debug("%s(), trying to close IrLAP\n",
- __func__);
- irlmp_do_lap_event(self->lap,
- LM_LAP_DISCONNECT_REQUEST,
- NULL);
- }
- break;
- case LM_LAP_DISCONNECT_INDICATION:
- irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
-
- reason = irlmp_convert_lap_reason(self->lap->reason);
-
- irlmp_disconnect_indication(self, reason, NULL);
- break;
- case LM_DISCONNECT_INDICATION:
- irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
-
- IRDA_ASSERT(self->lap != NULL, return -1;);
- IRDA_ASSERT(self->lap->magic == LMP_LAP_MAGIC, return -1;);
-
- IRDA_ASSERT(skb != NULL, return -1;);
- IRDA_ASSERT(skb->len > 3, return -1;);
- reason = skb->data[3];
-
- /* Try to close the LAP connection */
- pr_debug("%s(), trying to close IrLAP\n", __func__);
- irlmp_do_lap_event(self->lap, LM_LAP_DISCONNECT_REQUEST, NULL);
-
- irlmp_disconnect_indication(self, reason, skb);
- break;
- default:
- pr_debug("%s(), Unknown event %s on LSAP %#02x\n",
- __func__, irlmp_event[event], self->slsap_sel);
- break;
- }
- return ret;
-}
-
-/*
- * Function irlmp_state_setup (event, skb, info)
- *
- * SETUP, Station Control has set up the underlying IrLAP connection.
- * An LSAP connection request has been transmitted to the peer
- * LSAP-Connection Control FSM and we are awaiting reply.
- */
-static int irlmp_state_setup(struct lsap_cb *self, IRLMP_EVENT event,
- struct sk_buff *skb)
-{
- LM_REASON reason;
- int ret = 0;
-
- IRDA_ASSERT(self != NULL, return -1;);
- IRDA_ASSERT(self->magic == LMP_LSAP_MAGIC, return -1;);
-
- switch (event) {
- case LM_CONNECT_CONFIRM:
- irlmp_next_lsap_state(self, LSAP_DATA_TRANSFER_READY);
-
- del_timer(&self->watchdog_timer);
-
- irlmp_connect_confirm(self, skb);
- break;
- case LM_DISCONNECT_INDICATION:
- irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
-
- IRDA_ASSERT(self->lap != NULL, return -1;);
- IRDA_ASSERT(self->lap->magic == LMP_LAP_MAGIC, return -1;);
-
- IRDA_ASSERT(skb != NULL, return -1;);
- IRDA_ASSERT(skb->len > 3, return -1;);
- reason = skb->data[3];
-
- /* Try to close the LAP connection */
- pr_debug("%s(), trying to close IrLAP\n", __func__);
- irlmp_do_lap_event(self->lap, LM_LAP_DISCONNECT_REQUEST, NULL);
-
- irlmp_disconnect_indication(self, reason, skb);
- break;
- case LM_LAP_DISCONNECT_INDICATION:
- irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
-
- del_timer(&self->watchdog_timer);
-
- IRDA_ASSERT(self->lap != NULL, return -1;);
- IRDA_ASSERT(self->lap->magic == LMP_LAP_MAGIC, return -1;);
-
- reason = irlmp_convert_lap_reason(self->lap->reason);
-
- irlmp_disconnect_indication(self, reason, skb);
- break;
- case LM_WATCHDOG_TIMEOUT:
- pr_debug("%s() WATCHDOG_TIMEOUT!\n", __func__);
-
- IRDA_ASSERT(self->lap != NULL, return -1;);
- irlmp_do_lap_event(self->lap, LM_LAP_DISCONNECT_REQUEST, NULL);
- irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
-
- irlmp_disconnect_indication(self, LM_CONNECT_FAILURE, NULL);
- break;
- default:
- pr_debug("%s(), Unknown event %s on LSAP %#02x\n",
- __func__, irlmp_event[event], self->slsap_sel);
- break;
- }
- return ret;
-}
-
-/*
- * Function irlmp_state_setup_pend (event, skb, info)
- *
- * 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
- * LAP FSM to set up the underlying IrLAP connection, and we
- * are awaiting confirm.
- */
-static int irlmp_state_setup_pend(struct lsap_cb *self, IRLMP_EVENT event,
- struct sk_buff *skb)
-{
- struct sk_buff *tx_skb;
- LM_REASON reason;
- int ret = 0;
-
- IRDA_ASSERT(self != NULL, return -1;);
- IRDA_ASSERT(irlmp != NULL, return -1;);
-
- switch (event) {
- case LM_LAP_CONNECT_CONFIRM:
- IRDA_ASSERT(self->conn_skb != NULL, return -1;);
-
- tx_skb = self->conn_skb;
- self->conn_skb = NULL;
-
- irlmp_send_lcf_pdu(self->lap, self->dlsap_sel,
- self->slsap_sel, CONNECT_CMD, tx_skb);
- /* Drop reference count - see irlap_data_request(). */
- dev_kfree_skb(tx_skb);
-
- irlmp_next_lsap_state(self, LSAP_SETUP);
- break;
- case LM_WATCHDOG_TIMEOUT:
- pr_debug("%s() : WATCHDOG_TIMEOUT !\n", __func__);
-
- IRDA_ASSERT(self->lap != NULL, return -1;);
- irlmp_do_lap_event(self->lap, LM_LAP_DISCONNECT_REQUEST, NULL);
- irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
-
- irlmp_disconnect_indication(self, LM_CONNECT_FAILURE, NULL);
- break;
- case LM_LAP_DISCONNECT_INDICATION: /* LS_Disconnect.indication */
- del_timer( &self->watchdog_timer);
-
- irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
-
- reason = irlmp_convert_lap_reason(self->lap->reason);
-
- irlmp_disconnect_indication(self, reason, NULL);
- break;
- default:
- pr_debug("%s(), Unknown event %s on LSAP %#02x\n",
- __func__, irlmp_event[event], self->slsap_sel);
- break;
- }
- return ret;
-}