patch-2.2.3 linux/net/irda/irlan/irlan_provider_event.c

• Lines: 241
• Date: Sun Mar 7 15:26:44 1999
• Orig file: v2.2.2/linux/net/irda/irlan/irlan_provider_event.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.2.2/linux/net/irda/irlan/irlan_provider_event.c linux/net/irda/irlan/irlan_provider_event.c
@@ -0,0 +1,240 @@
+/*********************************************************************
+ *                
+ * Filename:      irlan_provider_event.c
+ * Version:       0.9
+ * Description:   IrLAN provider state machine)
+ * Status:        Experimental.
+ * Author:        Dag Brattli <dagb@cs.uit.no>
+ * Created at:    Sun Aug 31 20:14:37 1997
+ * Modified at:   Wed Feb  3 21:43:06 1999
+ * Modified by:   Dag Brattli <dagb@cs.uit.no>
+ * 
+ *     Copyright (c) 1998 Dag Brattli <dagb@cs.uit.no>, All Rights Reserved.
+ *     
+ *     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 Tromsų admit liability nor
+ *     provide warranty for any of this software. This material is 
+ *     provided "AS-IS" and at no charge.
+ *
+ ********************************************************************/
+
+#include <net/irda/irda.h>
+#include <net/irda/iriap.h>
+#include <net/irda/irlmp.h>
+#include <net/irda/irttp.h>
+
+#include <net/irda/irlan_provider.h>
+#include <net/irda/irlan_event.h>
+
+static int irlan_provider_state_idle(struct irlan_cb *self, IRLAN_EVENT event, 
+				     struct sk_buff *skb);
+static int irlan_provider_state_info(struct irlan_cb *self, IRLAN_EVENT event, 
+				     struct sk_buff *skb);
+static int irlan_provider_state_open(struct irlan_cb *self, IRLAN_EVENT event, 
+				     struct sk_buff *skb);
+static int irlan_provider_state_data(struct irlan_cb *self, IRLAN_EVENT event, 
+				     struct sk_buff *skb);
+
+static int (*state[])(struct irlan_cb *self, IRLAN_EVENT event, 
+		      struct sk_buff *skb) = 
+{ 
+	irlan_provider_state_idle,
+	NULL, /* Query */
+	NULL, /* Info */
+	irlan_provider_state_info,
+	NULL, /* Media */
+	irlan_provider_state_open,
+	NULL, /* Wait */
+	NULL, /* Arb */
+	irlan_provider_state_data,
+	NULL, /* Close */
+	NULL, /* Sync */
+};
+
+void irlan_do_provider_event(struct irlan_cb *self, IRLAN_EVENT event, 
+			     struct sk_buff *skb) 
+{
+	ASSERT(*state[ self->provider.state] != NULL, return;);
+
+	(*state[self->provider.state]) (self, event, skb);
+}
+
+/*
+ * Function irlan_provider_state_idle (event, skb, info)
+ *
+ *    IDLE, We are waiting for an indication that there is a provider
+ *    available.
+ */
+static int irlan_provider_state_idle(struct irlan_cb *self, IRLAN_EVENT event,
+				     struct sk_buff *skb)
+{
+	DEBUG(4, __FUNCTION__ "()\n");
+	
+	ASSERT(self != NULL, return -1;);
+	
+	switch(event) {
+	case IRLAN_CONNECT_INDICATION:
+	     irlan_provider_connect_response( self, self->provider.tsap_ctrl);
+	     irlan_next_provider_state( self, IRLAN_INFO);
+	     break;
+	default:
+		DEBUG(4, __FUNCTION__ "(), Unknown event %d\n", event);
+		break;
+	}
+	if (skb)
+		dev_kfree_skb(skb);
+
+	return 0;
+}
+
+/*
+ * Function irlan_provider_state_info (self, event, skb, info)
+ *
+ *    INFO, We have issued a GetInfo command and is awaiting a reply.
+ */
+static int irlan_provider_state_info(struct irlan_cb *self, IRLAN_EVENT event, 
+				     struct sk_buff *skb) 
+{
+	int ret;
+
+	DEBUG(4, __FUNCTION__ "()\n");
+	
+	ASSERT(self != NULL, return -1;);
+
+	switch(event) {
+	case IRLAN_GET_INFO_CMD:
+		/* Be sure to use 802.3 in case of peer mode */
+		if (self->access_type == ACCESS_PEER)
+			self->media = MEDIA_802_3;
+
+		irlan_provider_send_reply(self, CMD_GET_PROVIDER_INFO, 
+					  RSP_SUCCESS);
+		/* Keep state */
+		break;
+	case IRLAN_GET_MEDIA_CMD: 
+		irlan_provider_send_reply(self, CMD_GET_MEDIA_CHAR, 
+					  RSP_SUCCESS);
+		/* Keep state */
+		break;		
+	case IRLAN_OPEN_DATA_CMD:
+		ret = irlan_parse_open_data_cmd(self, skb);
+		if (self->access_type == ACCESS_PEER) {
+			/* FIXME: make use of random functions! */
+			self->provider.send_arb_val = (jiffies & 0xffff);
+		}
+		irlan_provider_send_reply(self, CMD_OPEN_DATA_CHANNEL, ret);
+
+		if (ret == RSP_SUCCESS) {
+			irlan_next_provider_state(self, IRLAN_OPEN);
+
+			/* Signal client that we are now open */
+			irlan_do_client_event(self, IRLAN_PROVIDER_SIGNAL, NULL);
+		}
+		break;
+	case IRLAN_LMP_DISCONNECT:  /* FALLTHROUGH */
+	case IRLAN_LAP_DISCONNECT:
+		irlan_next_provider_state(self, IRLAN_IDLE);
+		break;
+	default:
+		DEBUG( 0, __FUNCTION__ "(), Unknown event %d\n", event);
+		break;
+	}
+	if (skb)
+		dev_kfree_skb(skb);
+	
+	return 0;
+}
+
+/*
+ * Function irlan_provider_state_open (self, event, skb, info)
+ *
+ *    OPEN, The client has issued a OpenData command and is awaiting a
+ *    reply
+ *
+ */
+static int irlan_provider_state_open(struct irlan_cb *self, IRLAN_EVENT event, 
+				     struct sk_buff *skb)
+{
+	DEBUG(4, __FUNCTION__ "()\n");
+
+	ASSERT(self != NULL, return -1;);
+
+	switch(event) {
+	case IRLAN_FILTER_CONFIG_CMD:
+		irlan_provider_extract_params(self, CMD_FILTER_OPERATION, skb);
+		irlan_provider_send_reply(self, CMD_FILTER_OPERATION, 
+					  RSP_SUCCESS);
+		/* Keep state */
+		break;
+	case IRLAN_DATA_CONNECT_INDICATION: 
+		irlan_next_provider_state(self, IRLAN_DATA);
+		irlan_provider_connect_response(self, self->tsap_data);
+		break;
+	case IRLAN_LMP_DISCONNECT:  /* FALLTHROUGH */
+	case IRLAN_LAP_DISCONNECT:
+		irlan_next_provider_state(self, IRLAN_IDLE);
+		break;
+	default:
+		DEBUG(2, __FUNCTION__ "(), Unknown event %d\n", event);
+		break;
+	}
+	if (skb)
+		dev_kfree_skb(skb);
+
+	return 0;
+}
+
+/*
+ * Function irlan_provider_state_data (self, event, skb, info)
+ *
+ *    DATA, The data channel is connected, allowing data transfers between
+ *    the local and remote machines.
+ *
+ */
+static int irlan_provider_state_data(struct irlan_cb *self, IRLAN_EVENT event, 
+				     struct sk_buff *skb) 
+{
+	struct irmanager_event mgr_event;
+
+	DEBUG(4, __FUNCTION__ "()\n");
+
+	ASSERT(self != NULL, return -1;);
+	ASSERT(self->magic == IRLAN_MAGIC, return -1;);
+
+	switch(event) {
+	case IRLAN_FILTER_CONFIG_CMD:
+		irlan_provider_extract_params(self, CMD_FILTER_OPERATION, skb);
+		irlan_provider_send_reply(self, CMD_FILTER_OPERATION, 
+					  RSP_SUCCESS);
+		break;
+	case IRLAN_LMP_DISCONNECT: /* FALLTHROUGH */
+	case IRLAN_LAP_DISCONNECT:
+		mgr_event.event = EVENT_IRLAN_STOP;
+		sprintf(mgr_event.devname, "%s", self->ifname);
+		irmanager_notify(&mgr_event);
+
+		irlan_next_provider_state(self, IRLAN_IDLE);
+		break;
+	default:
+		DEBUG( 0, __FUNCTION__ "(), Unknown event %d\n", event);
+		break;
+	}
+	if (skb)
+		dev_kfree_skb(skb);
+	
+	return 0;
+}
+
+
+
+
+
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+