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phoenix |
/*********************************************************************
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*
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* Filename: irlap.c
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* Version: 1.0
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* Description: IrLAP implementation for Linux
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* Status: Stable
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* Author: Dag Brattli <dagb@cs.uit.no>
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* Created at: Mon Aug 4 20:40:53 1997
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* Modified at: Tue Dec 14 09:26:44 1999
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* Modified by: Dag Brattli <dagb@cs.uit.no>
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*
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* Copyright (c) 1998-1999 Dag Brattli, All Rights Reserved.
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* Copyright (c) 2000-2001 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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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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********************************************************************/
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#include <linux/config.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/skbuff.h>
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#include <linux/delay.h>
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#include <linux/proc_fs.h>
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#include <linux/init.h>
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#include <linux/random.h>
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#include <net/irda/irda.h>
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#include <net/irda/irda_device.h>
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#include <net/irda/irqueue.h>
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#include <net/irda/irlmp.h>
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#include <net/irda/irlmp_frame.h>
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#include <net/irda/irlap_frame.h>
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#include <net/irda/irlap.h>
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#include <net/irda/timer.h>
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#include <net/irda/qos.h>
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hashbin_t *irlap = NULL;
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int sysctl_slot_timeout = SLOT_TIMEOUT * 1000 / HZ;
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/* This is the delay of missed pf period before generating an event
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* to the application. The spec mandate 3 seconds, but in some cases
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* it's way too long. - Jean II */
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int sysctl_warn_noreply_time = 3;
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extern void irlap_queue_xmit(struct irlap_cb *self, struct sk_buff *skb);
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static void __irlap_close(struct irlap_cb *self);
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#ifdef CONFIG_IRDA_DEBUG
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static char *lap_reasons[] = {
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"ERROR, NOT USED",
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"LAP_DISC_INDICATION",
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"LAP_NO_RESPONSE",
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"LAP_RESET_INDICATION",
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"LAP_FOUND_NONE",
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"LAP_MEDIA_BUSY",
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"LAP_PRIMARY_CONFLICT",
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"ERROR, NOT USED",
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};
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#endif /* CONFIG_IRDA_DEBUG */
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#ifdef CONFIG_PROC_FS
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int irlap_proc_read(char *, char **, off_t, int);
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#endif /* CONFIG_PROC_FS */
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int __init irlap_init(void)
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{
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/* Allocate master array */
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irlap = hashbin_new(HB_LOCAL);
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if (irlap == NULL) {
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ERROR("%s(), can't allocate irlap hashbin!\n", __FUNCTION__);
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return -ENOMEM;
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}
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return 0;
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}
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void irlap_cleanup(void)
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{
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ASSERT(irlap != NULL, return;);
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hashbin_delete(irlap, (FREE_FUNC) __irlap_close);
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}
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/*
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* Function irlap_open (driver)
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*
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* Initialize IrLAP layer
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*
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*/
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struct irlap_cb *irlap_open(struct net_device *dev, struct qos_info *qos,
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char * hw_name)
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{
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struct irlap_cb *self;
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IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
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/* Initialize the irlap structure. */
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self = kmalloc(sizeof(struct irlap_cb), GFP_KERNEL);
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if (self == NULL)
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return NULL;
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memset(self, 0, sizeof(struct irlap_cb));
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self->magic = LAP_MAGIC;
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/* Make a binding between the layers */
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self->netdev = dev;
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self->qos_dev = qos;
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/* Copy hardware name */
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if(hw_name != NULL) {
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strncpy(self->hw_name, hw_name, 2*IFNAMSIZ);
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self->hw_name[2*IFNAMSIZ] = '\0';
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} else {
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self->hw_name[0] = '\0';
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}
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/* FIXME: should we get our own field? */
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dev->atalk_ptr = self;
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self->state = LAP_OFFLINE;
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/* Initialize transmit queue */
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skb_queue_head_init(&self->txq);
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skb_queue_head_init(&self->txq_ultra);
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skb_queue_head_init(&self->wx_list);
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/* My unique IrLAP device address! */
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get_random_bytes(&self->saddr, sizeof(self->saddr));
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memcpy(dev->dev_addr, &self->saddr, 4);
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init_timer(&self->slot_timer);
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init_timer(&self->query_timer);
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init_timer(&self->discovery_timer);
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init_timer(&self->final_timer);
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init_timer(&self->poll_timer);
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init_timer(&self->wd_timer);
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init_timer(&self->backoff_timer);
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init_timer(&self->media_busy_timer);
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irlap_apply_default_connection_parameters(self);
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self->N3 = 3; /* # connections attemts to try before giving up */
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self->state = LAP_NDM;
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hashbin_insert(irlap, (irda_queue_t *) self, self->saddr, NULL);
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irlmp_register_link(self, self->saddr, &self->notify);
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return self;
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}
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/*
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* Function __irlap_close (self)
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*
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* Remove IrLAP and all allocated memory. Stop any pending timers.
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*
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*/
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static void __irlap_close(struct irlap_cb *self)
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{
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ASSERT(self != NULL, return;);
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ASSERT(self->magic == LAP_MAGIC, return;);
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/* Stop timers */
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del_timer(&self->slot_timer);
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del_timer(&self->query_timer);
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del_timer(&self->discovery_timer);
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del_timer(&self->final_timer);
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del_timer(&self->poll_timer);
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del_timer(&self->wd_timer);
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del_timer(&self->backoff_timer);
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del_timer(&self->media_busy_timer);
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irlap_flush_all_queues(self);
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self->magic = 0;
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kfree(self);
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}
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/*
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* Function irlap_close (self)
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*
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* Remove IrLAP instance
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*
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*/
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void irlap_close(struct irlap_cb *self)
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{
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struct irlap_cb *lap;
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IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
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ASSERT(self != NULL, return;);
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ASSERT(self->magic == LAP_MAGIC, return;);
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irlap_disconnect_indication(self, LAP_DISC_INDICATION);
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irlmp_unregister_link(self->saddr);
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self->notify.instance = NULL;
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/* Be sure that we manage to remove ourself from the hash */
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lap = hashbin_remove(irlap, self->saddr, NULL);
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if (!lap) {
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IRDA_DEBUG(1, "%s(), Didn't find myself!\n", __FUNCTION__);
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return;
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}
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__irlap_close(lap);
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}
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/*
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* Function irlap_connect_indication (self, skb)
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*
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* Another device is attempting to make a connection
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*
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*/
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void irlap_connect_indication(struct irlap_cb *self, struct sk_buff *skb)
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{
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IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
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ASSERT(self != NULL, return;);
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ASSERT(self->magic == LAP_MAGIC, return;);
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irlap_init_qos_capabilities(self, NULL); /* No user QoS! */
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skb_get(skb); /*LEVEL4*/
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irlmp_link_connect_indication(self->notify.instance, self->saddr,
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self->daddr, &self->qos_tx, skb);
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}
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/*
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* Function irlap_connect_response (self, skb)
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*
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* Service user has accepted incoming connection
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*
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*/
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void irlap_connect_response(struct irlap_cb *self, struct sk_buff *skb)
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{
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IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
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irlap_do_event(self, CONNECT_RESPONSE, skb, NULL);
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kfree_skb(skb);
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}
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/*
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* Function irlap_connect_request (self, daddr, qos_user, sniff)
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*
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* Request connection with another device, sniffing is not implemented
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* yet.
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*
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*/
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void irlap_connect_request(struct irlap_cb *self, __u32 daddr,
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struct qos_info *qos_user, int sniff)
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{
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IRDA_DEBUG(3, "%s(), daddr=0x%08x\n", __FUNCTION__, daddr);
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ASSERT(self != NULL, return;);
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ASSERT(self->magic == LAP_MAGIC, return;);
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self->daddr = daddr;
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/*
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* If the service user specifies QoS values for this connection,
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* then use them
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*/
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irlap_init_qos_capabilities(self, qos_user);
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if ((self->state == LAP_NDM) && !self->media_busy)
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irlap_do_event(self, CONNECT_REQUEST, NULL, NULL);
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else
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self->connect_pending = TRUE;
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}
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/*
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* Function irlap_connect_confirm (self, skb)
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*
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* Connection request has been accepted
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*
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*/
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void irlap_connect_confirm(struct irlap_cb *self, struct sk_buff *skb)
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{
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IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
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ASSERT(self != NULL, return;);
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ASSERT(self->magic == LAP_MAGIC, return;);
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skb_get(skb); /*LEVEL4*/
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irlmp_link_connect_confirm(self->notify.instance, &self->qos_tx, skb);
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}
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/*
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305 |
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* Function irlap_data_indication (self, skb)
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*
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* Received data frames from IR-port, so we just pass them up to
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* IrLMP for further processing
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309 |
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*
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310 |
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*/
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void irlap_data_indication(struct irlap_cb *self, struct sk_buff *skb,
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312 |
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int unreliable)
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{
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314 |
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/* Hide LAP header from IrLMP layer */
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315 |
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skb_pull(skb, LAP_ADDR_HEADER+LAP_CTRL_HEADER);
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317 |
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skb_get(skb); /*LEVEL4*/
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irlmp_link_data_indication(self->notify.instance, skb, unreliable);
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}
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320 |
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321 |
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322 |
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/*
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323 |
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* Function irlap_data_request (self, skb)
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324 |
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*
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325 |
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* Queue data for transmission, must wait until XMIT state
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*
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327 |
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*/
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328 |
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void irlap_data_request(struct irlap_cb *self, struct sk_buff *skb,
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329 |
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int unreliable)
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330 |
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{
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331 |
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ASSERT(self != NULL, return;);
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332 |
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ASSERT(self->magic == LAP_MAGIC, return;);
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333 |
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334 |
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IRDA_DEBUG(3, "%s()\n", __FUNCTION__);
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335 |
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336 |
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ASSERT(skb_headroom(skb) >= (LAP_ADDR_HEADER+LAP_CTRL_HEADER),
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return;);
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338 |
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skb_push(skb, LAP_ADDR_HEADER+LAP_CTRL_HEADER);
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339 |
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340 |
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/*
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341 |
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* Must set frame format now so that the rest of the code knows
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342 |
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* if its dealing with an I or an UI frame
|
343 |
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*/
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344 |
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if (unreliable)
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skb->data[1] = UI_FRAME;
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else
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skb->data[1] = I_FRAME;
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348 |
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349 |
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/* Add at the end of the queue (keep ordering) - Jean II */
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skb_queue_tail(&self->txq, skb);
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351 |
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352 |
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/*
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353 |
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* Send event if this frame only if we are in the right state
|
354 |
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* FIXME: udata should be sent first! (skb_queue_head?)
|
355 |
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*/
|
356 |
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if ((self->state == LAP_XMIT_P) || (self->state == LAP_XMIT_S)) {
|
357 |
|
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/* If we are not already processing the Tx queue, trigger
|
358 |
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* transmission immediately - Jean II */
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359 |
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if((skb_queue_len(&self->txq) <= 1) && (!self->local_busy))
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360 |
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irlap_do_event(self, DATA_REQUEST, skb, NULL);
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361 |
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/* Otherwise, the packets will be sent normally at the
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362 |
|
|
* next pf-poll - Jean II */
|
363 |
|
|
}
|
364 |
|
|
}
|
365 |
|
|
|
366 |
|
|
/*
|
367 |
|
|
* Function irlap_unitdata_request (self, skb)
|
368 |
|
|
*
|
369 |
|
|
* Send Ultra data. This is data that must be sent outside any connection
|
370 |
|
|
*
|
371 |
|
|
*/
|
372 |
|
|
#ifdef CONFIG_IRDA_ULTRA
|
373 |
|
|
void irlap_unitdata_request(struct irlap_cb *self, struct sk_buff *skb)
|
374 |
|
|
{
|
375 |
|
|
ASSERT(self != NULL, return;);
|
376 |
|
|
ASSERT(self->magic == LAP_MAGIC, return;);
|
377 |
|
|
|
378 |
|
|
IRDA_DEBUG(3, "%s()\n", __FUNCTION__);
|
379 |
|
|
|
380 |
|
|
ASSERT(skb_headroom(skb) >= (LAP_ADDR_HEADER+LAP_CTRL_HEADER),
|
381 |
|
|
return;);
|
382 |
|
|
skb_push(skb, LAP_ADDR_HEADER+LAP_CTRL_HEADER);
|
383 |
|
|
|
384 |
|
|
skb->data[0] = CBROADCAST;
|
385 |
|
|
skb->data[1] = UI_FRAME;
|
386 |
|
|
|
387 |
|
|
skb_queue_tail(&self->txq_ultra, skb);
|
388 |
|
|
|
389 |
|
|
irlap_do_event(self, SEND_UI_FRAME, NULL, NULL);
|
390 |
|
|
}
|
391 |
|
|
#endif /*CONFIG_IRDA_ULTRA */
|
392 |
|
|
|
393 |
|
|
/*
|
394 |
|
|
* Function irlap_udata_indication (self, skb)
|
395 |
|
|
*
|
396 |
|
|
* Receive Ultra data. This is data that is received outside any connection
|
397 |
|
|
*
|
398 |
|
|
*/
|
399 |
|
|
#ifdef CONFIG_IRDA_ULTRA
|
400 |
|
|
void irlap_unitdata_indication(struct irlap_cb *self, struct sk_buff *skb)
|
401 |
|
|
{
|
402 |
|
|
IRDA_DEBUG(1, "%s()\n", __FUNCTION__);
|
403 |
|
|
|
404 |
|
|
ASSERT(self != NULL, return;);
|
405 |
|
|
ASSERT(self->magic == LAP_MAGIC, return;);
|
406 |
|
|
ASSERT(skb != NULL, return;);
|
407 |
|
|
|
408 |
|
|
/* Hide LAP header from IrLMP layer */
|
409 |
|
|
skb_pull(skb, LAP_ADDR_HEADER+LAP_CTRL_HEADER);
|
410 |
|
|
|
411 |
|
|
skb_get(skb); /*LEVEL4*/
|
412 |
|
|
irlmp_link_unitdata_indication(self->notify.instance, skb);
|
413 |
|
|
}
|
414 |
|
|
#endif /* CONFIG_IRDA_ULTRA */
|
415 |
|
|
|
416 |
|
|
/*
|
417 |
|
|
* Function irlap_disconnect_request (void)
|
418 |
|
|
*
|
419 |
|
|
* Request to disconnect connection by service user
|
420 |
|
|
*/
|
421 |
|
|
void irlap_disconnect_request(struct irlap_cb *self)
|
422 |
|
|
{
|
423 |
|
|
IRDA_DEBUG(3, "%s()\n", __FUNCTION__);
|
424 |
|
|
|
425 |
|
|
ASSERT(self != NULL, return;);
|
426 |
|
|
ASSERT(self->magic == LAP_MAGIC, return;);
|
427 |
|
|
|
428 |
|
|
/* Don't disconnect until all data frames are successfully sent */
|
429 |
|
|
if (skb_queue_len(&self->txq) > 0) {
|
430 |
|
|
self->disconnect_pending = TRUE;
|
431 |
|
|
|
432 |
|
|
return;
|
433 |
|
|
}
|
434 |
|
|
|
435 |
|
|
/* Check if we are in the right state for disconnecting */
|
436 |
|
|
switch (self->state) {
|
437 |
|
|
case LAP_XMIT_P: /* FALLTROUGH */
|
438 |
|
|
case LAP_XMIT_S: /* FALLTROUGH */
|
439 |
|
|
case LAP_CONN: /* FALLTROUGH */
|
440 |
|
|
case LAP_RESET_WAIT: /* FALLTROUGH */
|
441 |
|
|
case LAP_RESET_CHECK:
|
442 |
|
|
irlap_do_event(self, DISCONNECT_REQUEST, NULL, NULL);
|
443 |
|
|
break;
|
444 |
|
|
default:
|
445 |
|
|
IRDA_DEBUG(2, "%s(), disconnect pending!\n", __FUNCTION__);
|
446 |
|
|
self->disconnect_pending = TRUE;
|
447 |
|
|
break;
|
448 |
|
|
}
|
449 |
|
|
}
|
450 |
|
|
|
451 |
|
|
/*
|
452 |
|
|
* Function irlap_disconnect_indication (void)
|
453 |
|
|
*
|
454 |
|
|
* Disconnect request from other device
|
455 |
|
|
*
|
456 |
|
|
*/
|
457 |
|
|
void irlap_disconnect_indication(struct irlap_cb *self, LAP_REASON reason)
|
458 |
|
|
{
|
459 |
|
|
IRDA_DEBUG(1, "%s(), reason=%s\n", __FUNCTION__, lap_reasons[reason]);
|
460 |
|
|
|
461 |
|
|
ASSERT(self != NULL, return;);
|
462 |
|
|
ASSERT(self->magic == LAP_MAGIC, return;);
|
463 |
|
|
|
464 |
|
|
/* Flush queues */
|
465 |
|
|
irlap_flush_all_queues(self);
|
466 |
|
|
|
467 |
|
|
switch (reason) {
|
468 |
|
|
case LAP_RESET_INDICATION:
|
469 |
|
|
IRDA_DEBUG(1, "%s(), Sending reset request!\n", __FUNCTION__);
|
470 |
|
|
irlap_do_event(self, RESET_REQUEST, NULL, NULL);
|
471 |
|
|
break;
|
472 |
|
|
case LAP_NO_RESPONSE: /* FALLTROUGH */
|
473 |
|
|
case LAP_DISC_INDICATION: /* FALLTROUGH */
|
474 |
|
|
case LAP_FOUND_NONE: /* FALLTROUGH */
|
475 |
|
|
case LAP_MEDIA_BUSY:
|
476 |
|
|
irlmp_link_disconnect_indication(self->notify.instance, self,
|
477 |
|
|
reason, NULL);
|
478 |
|
|
break;
|
479 |
|
|
default:
|
480 |
|
|
ERROR("%s(), Unknown reason %d\n", __FUNCTION__, reason);
|
481 |
|
|
}
|
482 |
|
|
}
|
483 |
|
|
|
484 |
|
|
/*
|
485 |
|
|
* Function irlap_discovery_request (gen_addr_bit)
|
486 |
|
|
*
|
487 |
|
|
* Start one single discovery operation.
|
488 |
|
|
*
|
489 |
|
|
*/
|
490 |
|
|
void irlap_discovery_request(struct irlap_cb *self, discovery_t *discovery)
|
491 |
|
|
{
|
492 |
|
|
struct irlap_info info;
|
493 |
|
|
|
494 |
|
|
ASSERT(self != NULL, return;);
|
495 |
|
|
ASSERT(self->magic == LAP_MAGIC, return;);
|
496 |
|
|
ASSERT(discovery != NULL, return;);
|
497 |
|
|
|
498 |
|
|
IRDA_DEBUG(4, "%s(), nslots = %d\n", __FUNCTION__, discovery->nslots);
|
499 |
|
|
|
500 |
|
|
ASSERT((discovery->nslots == 1) || (discovery->nslots == 6) ||
|
501 |
|
|
(discovery->nslots == 8) || (discovery->nslots == 16),
|
502 |
|
|
return;);
|
503 |
|
|
|
504 |
|
|
/* Discovery is only possible in NDM mode */
|
505 |
|
|
if (self->state != LAP_NDM) {
|
506 |
|
|
IRDA_DEBUG(4, "%s(), discovery only possible in NDM mode\n",
|
507 |
|
|
__FUNCTION__);
|
508 |
|
|
irlap_discovery_confirm(self, NULL);
|
509 |
|
|
/* Note : in theory, if we are not in NDM, we could postpone
|
510 |
|
|
* the discovery like we do for connection request.
|
511 |
|
|
* In practice, it's not worth it. If the media was busy,
|
512 |
|
|
* it's likely next time around it won't be busy. If we are
|
513 |
|
|
* in REPLY state, we will get passive discovery info & event.
|
514 |
|
|
* Jean II */
|
515 |
|
|
return;
|
516 |
|
|
}
|
517 |
|
|
|
518 |
|
|
/* Check if last discovery request finished in time, or if
|
519 |
|
|
* it was aborted due to the media busy flag. */
|
520 |
|
|
if (self->discovery_log != NULL) {
|
521 |
|
|
hashbin_delete(self->discovery_log, (FREE_FUNC) kfree);
|
522 |
|
|
self->discovery_log = NULL;
|
523 |
|
|
}
|
524 |
|
|
|
525 |
|
|
self->discovery_log= hashbin_new(HB_LOCAL);
|
526 |
|
|
|
527 |
|
|
info.S = discovery->nslots; /* Number of slots */
|
528 |
|
|
info.s = 0; /* Current slot */
|
529 |
|
|
|
530 |
|
|
self->discovery_cmd = discovery;
|
531 |
|
|
info.discovery = discovery;
|
532 |
|
|
|
533 |
|
|
/* sysctl_slot_timeout bounds are checked in irsysctl.c - Jean II */
|
534 |
|
|
self->slot_timeout = sysctl_slot_timeout * HZ / 1000;
|
535 |
|
|
|
536 |
|
|
irlap_do_event(self, DISCOVERY_REQUEST, NULL, &info);
|
537 |
|
|
}
|
538 |
|
|
|
539 |
|
|
/*
|
540 |
|
|
* Function irlap_discovery_confirm (log)
|
541 |
|
|
*
|
542 |
|
|
* A device has been discovered in front of this station, we
|
543 |
|
|
* report directly to LMP.
|
544 |
|
|
*/
|
545 |
|
|
void irlap_discovery_confirm(struct irlap_cb *self, hashbin_t *discovery_log)
|
546 |
|
|
{
|
547 |
|
|
ASSERT(self != NULL, return;);
|
548 |
|
|
ASSERT(self->magic == LAP_MAGIC, return;);
|
549 |
|
|
|
550 |
|
|
ASSERT(self->notify.instance != NULL, return;);
|
551 |
|
|
|
552 |
|
|
/*
|
553 |
|
|
* Check for successful discovery, since we are then allowed to clear
|
554 |
|
|
* the media busy condition (IrLAP 6.13.4 - p.94). This should allow
|
555 |
|
|
* us to make connection attempts much faster and easier (i.e. no
|
556 |
|
|
* collisions).
|
557 |
|
|
* Setting media busy to false will also generate an event allowing
|
558 |
|
|
* to process pending events in NDM state machine.
|
559 |
|
|
* Note : the spec doesn't define what's a successful discovery is.
|
560 |
|
|
* If we want Ultra to work, it's successful even if there is
|
561 |
|
|
* nobody discovered - Jean II
|
562 |
|
|
*/
|
563 |
|
|
if (discovery_log)
|
564 |
|
|
irda_device_set_media_busy(self->netdev, FALSE);
|
565 |
|
|
|
566 |
|
|
/* Inform IrLMP */
|
567 |
|
|
irlmp_link_discovery_confirm(self->notify.instance, discovery_log);
|
568 |
|
|
}
|
569 |
|
|
|
570 |
|
|
/*
|
571 |
|
|
* Function irlap_discovery_indication (log)
|
572 |
|
|
*
|
573 |
|
|
* Somebody is trying to discover us!
|
574 |
|
|
*
|
575 |
|
|
*/
|
576 |
|
|
void irlap_discovery_indication(struct irlap_cb *self, discovery_t *discovery)
|
577 |
|
|
{
|
578 |
|
|
IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
|
579 |
|
|
|
580 |
|
|
ASSERT(self != NULL, return;);
|
581 |
|
|
ASSERT(self->magic == LAP_MAGIC, return;);
|
582 |
|
|
ASSERT(discovery != NULL, return;);
|
583 |
|
|
|
584 |
|
|
ASSERT(self->notify.instance != NULL, return;);
|
585 |
|
|
|
586 |
|
|
/* A device is very likely to connect immediately after it performs
|
587 |
|
|
* a successful discovery. This means that in our case, we are much
|
588 |
|
|
* more likely to receive a connection request over the medium.
|
589 |
|
|
* So, we backoff to avoid collisions.
|
590 |
|
|
* IrLAP spec 6.13.4 suggest 100ms...
|
591 |
|
|
* Note : this little trick actually make a *BIG* difference. If I set
|
592 |
|
|
* my Linux box with discovery enabled and one Ultra frame sent every
|
593 |
|
|
* second, my Palm has no trouble connecting to it every time !
|
594 |
|
|
* Jean II */
|
595 |
|
|
irda_device_set_media_busy(self->netdev, SMALL);
|
596 |
|
|
|
597 |
|
|
irlmp_link_discovery_indication(self->notify.instance, discovery);
|
598 |
|
|
}
|
599 |
|
|
|
600 |
|
|
/*
|
601 |
|
|
* Function irlap_status_indication (quality_of_link)
|
602 |
|
|
*
|
603 |
|
|
*
|
604 |
|
|
*
|
605 |
|
|
*/
|
606 |
|
|
void irlap_status_indication(struct irlap_cb *self, int quality_of_link)
|
607 |
|
|
{
|
608 |
|
|
switch (quality_of_link) {
|
609 |
|
|
case STATUS_NO_ACTIVITY:
|
610 |
|
|
MESSAGE("IrLAP, no activity on link!\n");
|
611 |
|
|
break;
|
612 |
|
|
case STATUS_NOISY:
|
613 |
|
|
MESSAGE("IrLAP, noisy link!\n");
|
614 |
|
|
break;
|
615 |
|
|
default:
|
616 |
|
|
break;
|
617 |
|
|
}
|
618 |
|
|
irlmp_status_indication(self->notify.instance,
|
619 |
|
|
quality_of_link, LOCK_NO_CHANGE);
|
620 |
|
|
}
|
621 |
|
|
|
622 |
|
|
/*
|
623 |
|
|
* Function irlap_reset_indication (void)
|
624 |
|
|
*
|
625 |
|
|
*
|
626 |
|
|
*
|
627 |
|
|
*/
|
628 |
|
|
void irlap_reset_indication(struct irlap_cb *self)
|
629 |
|
|
{
|
630 |
|
|
IRDA_DEBUG(1, "%s()\n", __FUNCTION__);
|
631 |
|
|
|
632 |
|
|
ASSERT(self != NULL, return;);
|
633 |
|
|
ASSERT(self->magic == LAP_MAGIC, return;);
|
634 |
|
|
|
635 |
|
|
if (self->state == LAP_RESET_WAIT)
|
636 |
|
|
irlap_do_event(self, RESET_REQUEST, NULL, NULL);
|
637 |
|
|
else
|
638 |
|
|
irlap_do_event(self, RESET_RESPONSE, NULL, NULL);
|
639 |
|
|
}
|
640 |
|
|
|
641 |
|
|
/*
|
642 |
|
|
* Function irlap_reset_confirm (void)
|
643 |
|
|
*
|
644 |
|
|
*
|
645 |
|
|
*
|
646 |
|
|
*/
|
647 |
|
|
void irlap_reset_confirm(void)
|
648 |
|
|
{
|
649 |
|
|
IRDA_DEBUG(1, "%s()\n", __FUNCTION__);
|
650 |
|
|
}
|
651 |
|
|
|
652 |
|
|
/*
|
653 |
|
|
* Function irlap_generate_rand_time_slot (S, s)
|
654 |
|
|
*
|
655 |
|
|
* Generate a random time slot between s and S-1 where
|
656 |
|
|
* S = Number of slots (0 -> S-1)
|
657 |
|
|
* s = Current slot
|
658 |
|
|
*/
|
659 |
|
|
int irlap_generate_rand_time_slot(int S, int s)
|
660 |
|
|
{
|
661 |
|
|
static int rand;
|
662 |
|
|
int slot;
|
663 |
|
|
|
664 |
|
|
ASSERT((S - s) > 0, return 0;);
|
665 |
|
|
|
666 |
|
|
rand += jiffies;
|
667 |
|
|
rand ^= (rand << 12);
|
668 |
|
|
rand ^= (rand >> 20);
|
669 |
|
|
|
670 |
|
|
slot = s + rand % (S-s);
|
671 |
|
|
|
672 |
|
|
ASSERT((slot >= s) || (slot < S), return 0;);
|
673 |
|
|
|
674 |
|
|
return slot;
|
675 |
|
|
}
|
676 |
|
|
|
677 |
|
|
/*
|
678 |
|
|
* Function irlap_update_nr_received (nr)
|
679 |
|
|
*
|
680 |
|
|
* Remove all acknowledged frames in current window queue. This code is
|
681 |
|
|
* not intuitive and you should not try to change it. If you think it
|
682 |
|
|
* contains bugs, please mail a patch to the author instead.
|
683 |
|
|
*/
|
684 |
|
|
void irlap_update_nr_received(struct irlap_cb *self, int nr)
|
685 |
|
|
{
|
686 |
|
|
struct sk_buff *skb = NULL;
|
687 |
|
|
int count = 0;
|
688 |
|
|
|
689 |
|
|
/*
|
690 |
|
|
* Remove all the ack-ed frames from the window queue.
|
691 |
|
|
*/
|
692 |
|
|
|
693 |
|
|
/*
|
694 |
|
|
* Optimize for the common case. It is most likely that the receiver
|
695 |
|
|
* will acknowledge all the frames we have sent! So in that case we
|
696 |
|
|
* delete all frames stored in window.
|
697 |
|
|
*/
|
698 |
|
|
if (nr == self->vs) {
|
699 |
|
|
while ((skb = skb_dequeue(&self->wx_list)) != NULL) {
|
700 |
|
|
dev_kfree_skb(skb);
|
701 |
|
|
}
|
702 |
|
|
/* The last acked frame is the next to send minus one */
|
703 |
|
|
self->va = nr - 1;
|
704 |
|
|
} else {
|
705 |
|
|
/* Remove all acknowledged frames in current window */
|
706 |
|
|
while ((skb_peek(&self->wx_list) != NULL) &&
|
707 |
|
|
(((self->va+1) % 8) != nr))
|
708 |
|
|
{
|
709 |
|
|
skb = skb_dequeue(&self->wx_list);
|
710 |
|
|
dev_kfree_skb(skb);
|
711 |
|
|
|
712 |
|
|
self->va = (self->va + 1) % 8;
|
713 |
|
|
count++;
|
714 |
|
|
}
|
715 |
|
|
}
|
716 |
|
|
|
717 |
|
|
/* Advance window */
|
718 |
|
|
self->window = self->window_size - skb_queue_len(&self->wx_list);
|
719 |
|
|
}
|
720 |
|
|
|
721 |
|
|
/*
|
722 |
|
|
* Function irlap_validate_ns_received (ns)
|
723 |
|
|
*
|
724 |
|
|
* Validate the next to send (ns) field from received frame.
|
725 |
|
|
*/
|
726 |
|
|
int irlap_validate_ns_received(struct irlap_cb *self, int ns)
|
727 |
|
|
{
|
728 |
|
|
/* ns as expected? */
|
729 |
|
|
if (ns == self->vr)
|
730 |
|
|
return NS_EXPECTED;
|
731 |
|
|
/*
|
732 |
|
|
* Stations are allowed to treat invalid NS as unexpected NS
|
733 |
|
|
* IrLAP, Recv ... with-invalid-Ns. p. 84
|
734 |
|
|
*/
|
735 |
|
|
return NS_UNEXPECTED;
|
736 |
|
|
|
737 |
|
|
/* return NR_INVALID; */
|
738 |
|
|
}
|
739 |
|
|
/*
|
740 |
|
|
* Function irlap_validate_nr_received (nr)
|
741 |
|
|
*
|
742 |
|
|
* Validate the next to receive (nr) field from received frame.
|
743 |
|
|
*
|
744 |
|
|
*/
|
745 |
|
|
int irlap_validate_nr_received(struct irlap_cb *self, int nr)
|
746 |
|
|
{
|
747 |
|
|
/* nr as expected? */
|
748 |
|
|
if (nr == self->vs) {
|
749 |
|
|
IRDA_DEBUG(4, "%s(), expected!\n", __FUNCTION__);
|
750 |
|
|
return NR_EXPECTED;
|
751 |
|
|
}
|
752 |
|
|
|
753 |
|
|
/*
|
754 |
|
|
* unexpected nr? (but within current window), first we check if the
|
755 |
|
|
* ns numbers of the frames in the current window wrap.
|
756 |
|
|
*/
|
757 |
|
|
if (self->va < self->vs) {
|
758 |
|
|
if ((nr >= self->va) && (nr <= self->vs))
|
759 |
|
|
return NR_UNEXPECTED;
|
760 |
|
|
} else {
|
761 |
|
|
if ((nr >= self->va) || (nr <= self->vs))
|
762 |
|
|
return NR_UNEXPECTED;
|
763 |
|
|
}
|
764 |
|
|
|
765 |
|
|
/* Invalid nr! */
|
766 |
|
|
return NR_INVALID;
|
767 |
|
|
}
|
768 |
|
|
|
769 |
|
|
/*
|
770 |
|
|
* Function irlap_initiate_connection_state ()
|
771 |
|
|
*
|
772 |
|
|
* Initialize the connection state parameters
|
773 |
|
|
*
|
774 |
|
|
*/
|
775 |
|
|
void irlap_initiate_connection_state(struct irlap_cb *self)
|
776 |
|
|
{
|
777 |
|
|
IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
|
778 |
|
|
|
779 |
|
|
ASSERT(self != NULL, return;);
|
780 |
|
|
ASSERT(self->magic == LAP_MAGIC, return;);
|
781 |
|
|
|
782 |
|
|
/* Next to send and next to receive */
|
783 |
|
|
self->vs = self->vr = 0;
|
784 |
|
|
|
785 |
|
|
/* Last frame which got acked (0 - 1) % 8 */
|
786 |
|
|
self->va = 7;
|
787 |
|
|
|
788 |
|
|
self->window = 1;
|
789 |
|
|
|
790 |
|
|
self->remote_busy = FALSE;
|
791 |
|
|
self->retry_count = 0;
|
792 |
|
|
}
|
793 |
|
|
|
794 |
|
|
/*
|
795 |
|
|
* Function irlap_wait_min_turn_around (self, qos)
|
796 |
|
|
*
|
797 |
|
|
* Wait negotiated minimum turn around time, this function actually sets
|
798 |
|
|
* the number of BOS's that must be sent before the next transmitted
|
799 |
|
|
* frame in order to delay for the specified amount of time. This is
|
800 |
|
|
* done to avoid using timers, and the forbidden udelay!
|
801 |
|
|
*/
|
802 |
|
|
void irlap_wait_min_turn_around(struct irlap_cb *self, struct qos_info *qos)
|
803 |
|
|
{
|
804 |
|
|
__u32 min_turn_time;
|
805 |
|
|
__u32 speed;
|
806 |
|
|
|
807 |
|
|
/* Get QoS values. */
|
808 |
|
|
speed = qos->baud_rate.value;
|
809 |
|
|
min_turn_time = qos->min_turn_time.value;
|
810 |
|
|
|
811 |
|
|
/* No need to calculate XBOFs for speeds over 115200 bps */
|
812 |
|
|
if (speed > 115200) {
|
813 |
|
|
self->mtt_required = min_turn_time;
|
814 |
|
|
return;
|
815 |
|
|
}
|
816 |
|
|
|
817 |
|
|
/*
|
818 |
|
|
* Send additional BOF's for the next frame for the requested
|
819 |
|
|
* min turn time, so now we must calculate how many chars (XBOF's) we
|
820 |
|
|
* must send for the requested time period (min turn time)
|
821 |
|
|
*/
|
822 |
|
|
self->xbofs_delay = irlap_min_turn_time_in_bytes(speed, min_turn_time);
|
823 |
|
|
}
|
824 |
|
|
|
825 |
|
|
/*
|
826 |
|
|
* Function irlap_flush_all_queues (void)
|
827 |
|
|
*
|
828 |
|
|
* Flush all queues
|
829 |
|
|
*
|
830 |
|
|
*/
|
831 |
|
|
void irlap_flush_all_queues(struct irlap_cb *self)
|
832 |
|
|
{
|
833 |
|
|
struct sk_buff* skb;
|
834 |
|
|
|
835 |
|
|
ASSERT(self != NULL, return;);
|
836 |
|
|
ASSERT(self->magic == LAP_MAGIC, return;);
|
837 |
|
|
|
838 |
|
|
/* Free transmission queue */
|
839 |
|
|
while ((skb = skb_dequeue(&self->txq)) != NULL)
|
840 |
|
|
dev_kfree_skb(skb);
|
841 |
|
|
|
842 |
|
|
while ((skb = skb_dequeue(&self->txq_ultra)) != NULL)
|
843 |
|
|
dev_kfree_skb(skb);
|
844 |
|
|
|
845 |
|
|
/* Free sliding window buffered packets */
|
846 |
|
|
while ((skb = skb_dequeue(&self->wx_list)) != NULL)
|
847 |
|
|
dev_kfree_skb(skb);
|
848 |
|
|
}
|
849 |
|
|
|
850 |
|
|
/*
|
851 |
|
|
* Function irlap_setspeed (self, speed)
|
852 |
|
|
*
|
853 |
|
|
* Change the speed of the IrDA port
|
854 |
|
|
*
|
855 |
|
|
*/
|
856 |
|
|
void irlap_change_speed(struct irlap_cb *self, __u32 speed, int now)
|
857 |
|
|
{
|
858 |
|
|
struct sk_buff *skb;
|
859 |
|
|
|
860 |
|
|
IRDA_DEBUG(0, "%s(), setting speed to %d\n", __FUNCTION__, speed);
|
861 |
|
|
|
862 |
|
|
ASSERT(self != NULL, return;);
|
863 |
|
|
ASSERT(self->magic == LAP_MAGIC, return;);
|
864 |
|
|
|
865 |
|
|
self->speed = speed;
|
866 |
|
|
|
867 |
|
|
/* Change speed now, or just piggyback speed on frames */
|
868 |
|
|
if (now) {
|
869 |
|
|
/* Send down empty frame to trigger speed change */
|
870 |
|
|
skb = dev_alloc_skb(0);
|
871 |
|
|
irlap_queue_xmit(self, skb);
|
872 |
|
|
}
|
873 |
|
|
}
|
874 |
|
|
|
875 |
|
|
/*
|
876 |
|
|
* Function irlap_init_qos_capabilities (self, qos)
|
877 |
|
|
*
|
878 |
|
|
* Initialize QoS for this IrLAP session, What we do is to compute the
|
879 |
|
|
* intersection of the QoS capabilities for the user, driver and for
|
880 |
|
|
* IrLAP itself. Normally, IrLAP will not specify any values, but it can
|
881 |
|
|
* be used to restrict certain values.
|
882 |
|
|
*/
|
883 |
|
|
void irlap_init_qos_capabilities(struct irlap_cb *self,
|
884 |
|
|
struct qos_info *qos_user)
|
885 |
|
|
{
|
886 |
|
|
ASSERT(self != NULL, return;);
|
887 |
|
|
ASSERT(self->magic == LAP_MAGIC, return;);
|
888 |
|
|
ASSERT(self->netdev != NULL, return;);
|
889 |
|
|
|
890 |
|
|
/* Start out with the maximum QoS support possible */
|
891 |
|
|
irda_init_max_qos_capabilies(&self->qos_rx);
|
892 |
|
|
|
893 |
|
|
/* Apply drivers QoS capabilities */
|
894 |
|
|
irda_qos_compute_intersection(&self->qos_rx, self->qos_dev);
|
895 |
|
|
|
896 |
|
|
/*
|
897 |
|
|
* Check for user supplied QoS parameters. The service user is only
|
898 |
|
|
* allowed to supply these values. We check each parameter since the
|
899 |
|
|
* user may not have set all of them.
|
900 |
|
|
*/
|
901 |
|
|
if (qos_user) {
|
902 |
|
|
IRDA_DEBUG(1, "%s(), Found user specified QoS!\n", __FUNCTION__);
|
903 |
|
|
|
904 |
|
|
if (qos_user->baud_rate.bits)
|
905 |
|
|
self->qos_rx.baud_rate.bits &= qos_user->baud_rate.bits;
|
906 |
|
|
|
907 |
|
|
if (qos_user->max_turn_time.bits)
|
908 |
|
|
self->qos_rx.max_turn_time.bits &= qos_user->max_turn_time.bits;
|
909 |
|
|
if (qos_user->data_size.bits)
|
910 |
|
|
self->qos_rx.data_size.bits &= qos_user->data_size.bits;
|
911 |
|
|
|
912 |
|
|
if (qos_user->link_disc_time.bits)
|
913 |
|
|
self->qos_rx.link_disc_time.bits &= qos_user->link_disc_time.bits;
|
914 |
|
|
}
|
915 |
|
|
|
916 |
|
|
/* Use 500ms in IrLAP for now */
|
917 |
|
|
self->qos_rx.max_turn_time.bits &= 0x01;
|
918 |
|
|
|
919 |
|
|
/* Set data size */
|
920 |
|
|
/*self->qos_rx.data_size.bits &= 0x03;*/
|
921 |
|
|
|
922 |
|
|
irda_qos_bits_to_value(&self->qos_rx);
|
923 |
|
|
}
|
924 |
|
|
|
925 |
|
|
/*
|
926 |
|
|
* Function irlap_apply_default_connection_parameters (void, now)
|
927 |
|
|
*
|
928 |
|
|
* Use the default connection and transmission parameters
|
929 |
|
|
*
|
930 |
|
|
*/
|
931 |
|
|
void irlap_apply_default_connection_parameters(struct irlap_cb *self)
|
932 |
|
|
{
|
933 |
|
|
IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
|
934 |
|
|
|
935 |
|
|
ASSERT(self != NULL, return;);
|
936 |
|
|
ASSERT(self->magic == LAP_MAGIC, return;);
|
937 |
|
|
|
938 |
|
|
/* xbofs : Default value in NDM */
|
939 |
|
|
self->next_bofs = 12;
|
940 |
|
|
self->bofs_count = 12;
|
941 |
|
|
|
942 |
|
|
/* NDM Speed is 9600 */
|
943 |
|
|
irlap_change_speed(self, 9600, TRUE);
|
944 |
|
|
|
945 |
|
|
/* Set mbusy when going to NDM state */
|
946 |
|
|
irda_device_set_media_busy(self->netdev, TRUE);
|
947 |
|
|
|
948 |
|
|
/*
|
949 |
|
|
* Generate random connection address for this session, which must
|
950 |
|
|
* be 7 bits wide and different from 0x00 and 0xfe
|
951 |
|
|
*/
|
952 |
|
|
while ((self->caddr == 0x00) || (self->caddr == 0xfe)) {
|
953 |
|
|
get_random_bytes(&self->caddr, sizeof(self->caddr));
|
954 |
|
|
self->caddr &= 0xfe;
|
955 |
|
|
}
|
956 |
|
|
|
957 |
|
|
/* Use default values until connection has been negitiated */
|
958 |
|
|
self->slot_timeout = sysctl_slot_timeout;
|
959 |
|
|
self->final_timeout = FINAL_TIMEOUT;
|
960 |
|
|
self->poll_timeout = POLL_TIMEOUT;
|
961 |
|
|
self->wd_timeout = WD_TIMEOUT;
|
962 |
|
|
|
963 |
|
|
/* Set some default values */
|
964 |
|
|
self->qos_tx.baud_rate.value = 9600;
|
965 |
|
|
self->qos_rx.baud_rate.value = 9600;
|
966 |
|
|
self->qos_tx.max_turn_time.value = 0;
|
967 |
|
|
self->qos_rx.max_turn_time.value = 0;
|
968 |
|
|
self->qos_tx.min_turn_time.value = 0;
|
969 |
|
|
self->qos_rx.min_turn_time.value = 0;
|
970 |
|
|
self->qos_tx.data_size.value = 64;
|
971 |
|
|
self->qos_rx.data_size.value = 64;
|
972 |
|
|
self->qos_tx.window_size.value = 1;
|
973 |
|
|
self->qos_rx.window_size.value = 1;
|
974 |
|
|
self->qos_tx.additional_bofs.value = 12;
|
975 |
|
|
self->qos_rx.additional_bofs.value = 12;
|
976 |
|
|
self->qos_tx.link_disc_time.value = 0;
|
977 |
|
|
self->qos_rx.link_disc_time.value = 0;
|
978 |
|
|
|
979 |
|
|
irlap_flush_all_queues(self);
|
980 |
|
|
|
981 |
|
|
self->disconnect_pending = FALSE;
|
982 |
|
|
self->connect_pending = FALSE;
|
983 |
|
|
}
|
984 |
|
|
|
985 |
|
|
/*
|
986 |
|
|
* Function irlap_apply_connection_parameters (qos, now)
|
987 |
|
|
*
|
988 |
|
|
* Initialize IrLAP with the negotiated QoS values
|
989 |
|
|
*
|
990 |
|
|
* If 'now' is false, the speed and xbofs will be changed after the next
|
991 |
|
|
* frame is sent.
|
992 |
|
|
* If 'now' is true, the speed and xbofs is changed immediately
|
993 |
|
|
*/
|
994 |
|
|
void irlap_apply_connection_parameters(struct irlap_cb *self, int now)
|
995 |
|
|
{
|
996 |
|
|
IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
|
997 |
|
|
|
998 |
|
|
ASSERT(self != NULL, return;);
|
999 |
|
|
ASSERT(self->magic == LAP_MAGIC, return;);
|
1000 |
|
|
|
1001 |
|
|
/* Set the negociated xbofs value */
|
1002 |
|
|
self->next_bofs = self->qos_tx.additional_bofs.value;
|
1003 |
|
|
if (now)
|
1004 |
|
|
self->bofs_count = self->next_bofs;
|
1005 |
|
|
|
1006 |
|
|
/* Set the negociated link speed (may need the new xbofs value) */
|
1007 |
|
|
irlap_change_speed(self, self->qos_tx.baud_rate.value, now);
|
1008 |
|
|
|
1009 |
|
|
self->window_size = self->qos_tx.window_size.value;
|
1010 |
|
|
self->window = self->qos_tx.window_size.value;
|
1011 |
|
|
|
1012 |
|
|
#ifdef CONFIG_IRDA_DYNAMIC_WINDOW
|
1013 |
|
|
/*
|
1014 |
|
|
* Calculate how many bytes it is possible to transmit before the
|
1015 |
|
|
* link must be turned around
|
1016 |
|
|
*/
|
1017 |
|
|
self->line_capacity =
|
1018 |
|
|
irlap_max_line_capacity(self->qos_tx.baud_rate.value,
|
1019 |
|
|
self->qos_tx.max_turn_time.value);
|
1020 |
|
|
self->bytes_left = self->line_capacity;
|
1021 |
|
|
#endif /* CONFIG_IRDA_DYNAMIC_WINDOW */
|
1022 |
|
|
|
1023 |
|
|
|
1024 |
|
|
/*
|
1025 |
|
|
* Initialize timeout values, some of the rules are listed on
|
1026 |
|
|
* page 92 in IrLAP.
|
1027 |
|
|
*/
|
1028 |
|
|
ASSERT(self->qos_tx.max_turn_time.value != 0, return;);
|
1029 |
|
|
ASSERT(self->qos_rx.max_turn_time.value != 0, return;);
|
1030 |
|
|
/* The poll timeout applies only to the primary station.
|
1031 |
|
|
* It defines the maximum time the primary stay in XMIT mode
|
1032 |
|
|
* before timeout and turning the link around (sending a RR).
|
1033 |
|
|
* Or, this is how much we can keep the pf bit in primary mode.
|
1034 |
|
|
* Therefore, it must be lower or equal than our *OWN* max turn around.
|
1035 |
|
|
* Jean II */
|
1036 |
|
|
self->poll_timeout = self->qos_tx.max_turn_time.value * HZ / 1000;
|
1037 |
|
|
/* The Final timeout applies only to the primary station.
|
1038 |
|
|
* It defines the maximum time the primary wait (mostly in RECV mode)
|
1039 |
|
|
* for an answer from the secondary station before polling it again.
|
1040 |
|
|
* Therefore, it must be greater or equal than our *PARTNER*
|
1041 |
|
|
* max turn around time - Jean II */
|
1042 |
|
|
self->final_timeout = self->qos_rx.max_turn_time.value * HZ / 1000;
|
1043 |
|
|
/* The Watchdog Bit timeout applies only to the secondary station.
|
1044 |
|
|
* It defines the maximum time the secondary wait (mostly in RECV mode)
|
1045 |
|
|
* for poll from the primary station before getting annoyed.
|
1046 |
|
|
* Therefore, it must be greater or equal than our *PARTNER*
|
1047 |
|
|
* max turn around time - Jean II */
|
1048 |
|
|
self->wd_timeout = self->final_timeout * 2;
|
1049 |
|
|
|
1050 |
|
|
/*
|
1051 |
|
|
* N1 and N2 are maximum retry count for *both* the final timer
|
1052 |
|
|
* and the wd timer (with a factor 2) as defined above.
|
1053 |
|
|
* After N1 retry of a timer, we give a warning to the user.
|
1054 |
|
|
* After N2 retry, we consider the link dead and disconnect it.
|
1055 |
|
|
* Jean II
|
1056 |
|
|
*/
|
1057 |
|
|
|
1058 |
|
|
/*
|
1059 |
|
|
* Set N1 to 0 if Link Disconnect/Threshold Time = 3 and set it to
|
1060 |
|
|
* 3 seconds otherwise. See page 71 in IrLAP for more details.
|
1061 |
|
|
* Actually, it's not always 3 seconds, as we allow to set
|
1062 |
|
|
* it via sysctl... Max maxtt is 500ms, and N1 need to be multiple
|
1063 |
|
|
* of 2, so 1 second is minimum we can allow. - Jean II
|
1064 |
|
|
*/
|
1065 |
|
|
if (self->qos_tx.link_disc_time.value == sysctl_warn_noreply_time)
|
1066 |
|
|
/*
|
1067 |
|
|
* If we set N1 to 0, it will trigger immediately, which is
|
1068 |
|
|
* not what we want. What we really want is to disable it,
|
1069 |
|
|
* Jean II
|
1070 |
|
|
*/
|
1071 |
|
|
self->N1 = -2; /* Disable - Need to be multiple of 2*/
|
1072 |
|
|
else
|
1073 |
|
|
self->N1 = sysctl_warn_noreply_time * 1000 /
|
1074 |
|
|
self->qos_rx.max_turn_time.value;
|
1075 |
|
|
|
1076 |
|
|
IRDA_DEBUG(4, "Setting N1 = %d\n", self->N1);
|
1077 |
|
|
|
1078 |
|
|
/* Set N2 to match our own disconnect time */
|
1079 |
|
|
self->N2 = self->qos_tx.link_disc_time.value * 1000 /
|
1080 |
|
|
self->qos_rx.max_turn_time.value;
|
1081 |
|
|
IRDA_DEBUG(4, "Setting N2 = %d\n", self->N2);
|
1082 |
|
|
}
|
1083 |
|
|
|
1084 |
|
|
#ifdef CONFIG_PROC_FS
|
1085 |
|
|
/*
|
1086 |
|
|
* Function irlap_proc_read (buf, start, offset, len, unused)
|
1087 |
|
|
*
|
1088 |
|
|
* Give some info to the /proc file system
|
1089 |
|
|
*
|
1090 |
|
|
*/
|
1091 |
|
|
int irlap_proc_read(char *buf, char **start, off_t offset, int len)
|
1092 |
|
|
{
|
1093 |
|
|
struct irlap_cb *self;
|
1094 |
|
|
unsigned long flags;
|
1095 |
|
|
int i = 0;
|
1096 |
|
|
|
1097 |
|
|
save_flags(flags);
|
1098 |
|
|
cli();
|
1099 |
|
|
|
1100 |
|
|
len = 0;
|
1101 |
|
|
|
1102 |
|
|
self = (struct irlap_cb *) hashbin_get_first(irlap);
|
1103 |
|
|
while (self != NULL) {
|
1104 |
|
|
ASSERT(self != NULL, break;);
|
1105 |
|
|
ASSERT(self->magic == LAP_MAGIC, break;);
|
1106 |
|
|
|
1107 |
|
|
len += sprintf(buf+len, "irlap%d ", i++);
|
1108 |
|
|
len += sprintf(buf+len, "state: %s\n",
|
1109 |
|
|
irlap_state[self->state]);
|
1110 |
|
|
|
1111 |
|
|
len += sprintf(buf+len, " device name: %s, ",
|
1112 |
|
|
(self->netdev) ? self->netdev->name : "bug");
|
1113 |
|
|
len += sprintf(buf+len, "hardware name: %s\n", self->hw_name);
|
1114 |
|
|
|
1115 |
|
|
len += sprintf(buf+len, " caddr: %#02x, ", self->caddr);
|
1116 |
|
|
len += sprintf(buf+len, "saddr: %#08x, ", self->saddr);
|
1117 |
|
|
len += sprintf(buf+len, "daddr: %#08x\n", self->daddr);
|
1118 |
|
|
|
1119 |
|
|
len += sprintf(buf+len, " win size: %d, ",
|
1120 |
|
|
self->window_size);
|
1121 |
|
|
len += sprintf(buf+len, "win: %d, ", self->window);
|
1122 |
|
|
#if CONFIG_IRDA_DYNAMIC_WINDOW
|
1123 |
|
|
len += sprintf(buf+len, "line capacity: %d, ",
|
1124 |
|
|
self->line_capacity);
|
1125 |
|
|
len += sprintf(buf+len, "bytes left: %d\n", self->bytes_left);
|
1126 |
|
|
#endif /* CONFIG_IRDA_DYNAMIC_WINDOW */
|
1127 |
|
|
len += sprintf(buf+len, " tx queue len: %d ",
|
1128 |
|
|
skb_queue_len(&self->txq));
|
1129 |
|
|
len += sprintf(buf+len, "win queue len: %d ",
|
1130 |
|
|
skb_queue_len(&self->wx_list));
|
1131 |
|
|
len += sprintf(buf+len, "rbusy: %s", self->remote_busy ?
|
1132 |
|
|
"TRUE" : "FALSE");
|
1133 |
|
|
len += sprintf(buf+len, " mbusy: %s\n", self->media_busy ?
|
1134 |
|
|
"TRUE" : "FALSE");
|
1135 |
|
|
|
1136 |
|
|
len += sprintf(buf+len, " retrans: %d ", self->retry_count);
|
1137 |
|
|
len += sprintf(buf+len, "vs: %d ", self->vs);
|
1138 |
|
|
len += sprintf(buf+len, "vr: %d ", self->vr);
|
1139 |
|
|
len += sprintf(buf+len, "va: %d\n", self->va);
|
1140 |
|
|
|
1141 |
|
|
len += sprintf(buf+len, " qos\tbps\tmaxtt\tdsize\twinsize\taddbofs\tmintt\tldisc\tcomp\n");
|
1142 |
|
|
|
1143 |
|
|
len += sprintf(buf+len, " tx\t%d\t",
|
1144 |
|
|
self->qos_tx.baud_rate.value);
|
1145 |
|
|
len += sprintf(buf+len, "%d\t",
|
1146 |
|
|
self->qos_tx.max_turn_time.value);
|
1147 |
|
|
len += sprintf(buf+len, "%d\t",
|
1148 |
|
|
self->qos_tx.data_size.value);
|
1149 |
|
|
len += sprintf(buf+len, "%d\t",
|
1150 |
|
|
self->qos_tx.window_size.value);
|
1151 |
|
|
len += sprintf(buf+len, "%d\t",
|
1152 |
|
|
self->qos_tx.additional_bofs.value);
|
1153 |
|
|
len += sprintf(buf+len, "%d\t",
|
1154 |
|
|
self->qos_tx.min_turn_time.value);
|
1155 |
|
|
len += sprintf(buf+len, "%d\t",
|
1156 |
|
|
self->qos_tx.link_disc_time.value);
|
1157 |
|
|
len += sprintf(buf+len, "\n");
|
1158 |
|
|
|
1159 |
|
|
len += sprintf(buf+len, " rx\t%d\t",
|
1160 |
|
|
self->qos_rx.baud_rate.value);
|
1161 |
|
|
len += sprintf(buf+len, "%d\t",
|
1162 |
|
|
self->qos_rx.max_turn_time.value);
|
1163 |
|
|
len += sprintf(buf+len, "%d\t",
|
1164 |
|
|
self->qos_rx.data_size.value);
|
1165 |
|
|
len += sprintf(buf+len, "%d\t",
|
1166 |
|
|
self->qos_rx.window_size.value);
|
1167 |
|
|
len += sprintf(buf+len, "%d\t",
|
1168 |
|
|
self->qos_rx.additional_bofs.value);
|
1169 |
|
|
len += sprintf(buf+len, "%d\t",
|
1170 |
|
|
self->qos_rx.min_turn_time.value);
|
1171 |
|
|
len += sprintf(buf+len, "%d\t",
|
1172 |
|
|
self->qos_rx.link_disc_time.value);
|
1173 |
|
|
len += sprintf(buf+len, "\n");
|
1174 |
|
|
|
1175 |
|
|
self = (struct irlap_cb *) hashbin_get_next(irlap);
|
1176 |
|
|
}
|
1177 |
|
|
restore_flags(flags);
|
1178 |
|
|
|
1179 |
|
|
return len;
|
1180 |
|
|
}
|
1181 |
|
|
|
1182 |
|
|
#endif /* CONFIG_PROC_FS */
|
1183 |
|
|
|