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

• Lines: 236
• Date: Sun Mar 7 15:26:44 1999
• Orig file: v2.2.2/linux/net/irda/irlan/irlan_filter.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.2.2/linux/net/irda/irlan/irlan_filter.c linux/net/irda/irlan/irlan_filter.c
@@ -0,0 +1,235 @@
+/*********************************************************************
+ *                
+ * Filename:      irlan_filter.c
+ * Version:       
+ * Description:   
+ * Status:        Experimental.
+ * Author:        Dag Brattli <dagb@cs.uit.no>
+ * Created at:    Fri Jan 29 11:16:38 1999
+ * Modified at:   Sun Feb  7 23:48:07 1999
+ * Modified by:   Dag Brattli <dagb@cs.uit.no>
+ * 
+ *     Copyright (c) 1998 Dag Brattli, 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 <linux/skbuff.h>
+
+#include <net/irda/irlan_common.h>
+
+/*
+ * Function handle_filter_request (self, skb)
+ *
+ *    Handle filter request from client peer device
+ *
+ */
+void handle_filter_request(struct irlan_cb *self, struct sk_buff *skb)
+{
+	ASSERT(self != NULL, return;);
+	ASSERT(self->magic == IRLAN_MAGIC, return;);
+
+	if ((self->provider.filter_type == IRLAN_DIRECTED) && 
+	    (self->provider.filter_operation == DYNAMIC))
+	{
+		DEBUG(0, "Giving peer a dynamic Ethernet address\n");
+
+		self->provider.mac_address[0] = 0x40;
+		self->provider.mac_address[1] = 0x00;
+		self->provider.mac_address[2] = 0x00;
+		self->provider.mac_address[3] = 0x00;
+		
+		/* Use arbitration value to generate MAC address */
+		if (self->access_type == ACCESS_PEER) {
+			self->provider.mac_address[4] = 
+				self->provider.send_arb_val & 0xff;
+			self->provider.mac_address[5] = 
+				(self->provider.send_arb_val >> 8) & 0xff;;
+		} else {
+			/* Just generate something for now */
+			self->provider.mac_address[4] = jiffies & 0xff;
+			self->provider.mac_address[5] = (jiffies >> 8) & 0xff;
+		}
+
+		skb->data[0] = 0x00; /* Success */
+		skb->data[1] = 0x03;
+		irlan_insert_string_param(skb, "FILTER_MODE", "NONE");
+		irlan_insert_short_param(skb, "MAX_ENTRY", 0x0001);
+		irlan_insert_array_param(skb, "FILTER_ENTRY", self->provider.mac_address, 6);
+		return;
+	}
+	
+	if ((self->provider.filter_type == IRLAN_DIRECTED) && 
+	    (self->provider.filter_mode == FILTER))
+	{
+		DEBUG(0, "Directed filter on\n");
+		skb->data[0] = 0x00; /* Success */
+		skb->data[1] = 0x00;
+		return;
+	}
+	if ((self->provider.filter_type == IRLAN_DIRECTED) && 
+	    (self->provider.filter_mode == NONE))
+	{
+		DEBUG(0, "Directed filter off\n");
+		skb->data[0] = 0x00; /* Success */
+		skb->data[1] = 0x00;
+		return;
+	}
+
+	if ((self->provider.filter_type == IRLAN_BROADCAST) && 
+	    (self->provider.filter_mode == FILTER))
+	{
+		DEBUG(0, "Broadcast filter on\n");
+		skb->data[0] = 0x00; /* Success */
+		skb->data[1] = 0x00;
+		return;
+	}
+	if ((self->provider.filter_type == IRLAN_BROADCAST) && 
+	    (self->provider.filter_mode == NONE))
+	{
+		DEBUG(0, "Broadcast filter off\n");
+		skb->data[0] = 0x00; /* Success */
+		skb->data[1] = 0x00;
+		return;
+	}
+	if ((self->provider.filter_type == IRLAN_MULTICAST) && 
+	    (self->provider.filter_mode == FILTER))
+	{
+		DEBUG(0, "Multicast filter on\n");
+		skb->data[0] = 0x00; /* Success */
+		skb->data[1] = 0x00;
+		return;
+	}
+	if ((self->provider.filter_type == IRLAN_MULTICAST) && 
+	    (self->provider.filter_mode == NONE))
+	{
+		DEBUG(0, "Multicast filter off\n");
+		skb->data[0] = 0x00; /* Success */
+		skb->data[1] = 0x00;
+		return;
+	}
+	if ((self->provider.filter_type == IRLAN_MULTICAST) && 
+	    (self->provider.filter_operation == GET))
+	{
+		DEBUG(0, "Multicast filter get\n");
+		skb->data[0] = 0x00; /* Success? */
+		skb->data[1] = 0x02;
+		irlan_insert_string_param(skb, "FILTER_MODE", "NONE");
+		irlan_insert_short_param(skb, "MAX_ENTRY", 16);
+		return;
+	}
+	skb->data[0] = 0x00; /* Command not supported */
+	skb->data[1] = 0x00;
+
+	DEBUG(0, "Not implemented!\n");
+}
+
+/*
+ * Function check_request_param (self, param, value)
+ *
+ *    Check parameters in request from peer device
+ *
+ */
+static void irlan_check_command_param(struct irlan_cb *self, char *param, 
+				      char *value)
+{
+	__u8 *bytes;
+
+	DEBUG(4, __FUNCTION__ "()\n");
+
+	bytes = value;
+
+	ASSERT(self != NULL, return;);
+	ASSERT(self->magic == IRLAN_MAGIC, return;);
+
+	DEBUG(4, "%s, %s\n", param, value);
+
+	/*
+	 *  This is experimental!! DB.
+	 */
+	 if (strcmp(param, "MODE") == 0) {
+		DEBUG(0, __FUNCTION__ "()\n");
+		self->use_udata = TRUE;
+		return;
+	}
+
+	/*
+	 *  FILTER_TYPE
+	 */
+	if (strcmp(param, "FILTER_TYPE") == 0) {
+		if (strcmp(value, "DIRECTED") == 0) {
+			self->provider.filter_type = IRLAN_DIRECTED;
+			return;
+		}
+		if (strcmp(value, "MULTICAST") == 0) {
+			self->provider.filter_type = IRLAN_MULTICAST;
+			return;
+		}
+		if (strcmp(value, "BROADCAST") == 0) {
+			self->provider.filter_type = IRLAN_BROADCAST;
+			return;
+		}
+	}
+	/*
+	 *  FILTER_MODE
+	 */
+	if (strcmp(param, "FILTER_MODE") == 0) {
+		if (strcmp(value, "ALL") == 0) {
+			self->provider.filter_mode = ALL;
+			return;
+		}
+		if (strcmp(value, "FILTER") == 0) {
+			self->provider.filter_mode = FILTER;
+			return;
+		}
+		if (strcmp(value, "NONE") == 0) {
+			self->provider.filter_mode = FILTER;
+			return;
+		}
+	}
+	/*
+	 *  FILTER_OPERATION
+	 */
+	if (strcmp(param, "FILTER_OPERATION") == 0) {
+		if (strcmp(value, "DYNAMIC") == 0) {
+			self->provider.filter_operation = DYNAMIC;
+			return;
+		}
+		if (strcmp(value, "GET") == 0) {
+			self->provider.filter_operation = GET;
+			return;
+		}
+	}
+}
+
+int irlan_print_filter(int filter_type, char *buf)
+{
+	int len = 0;
+
+	if (filter_type & IRLAN_DIRECTED)
+		len += sprintf(buf+len, "%s", "DIRECTED ");
+	if (filter_type & IRLAN_FUNCTIONAL)
+		len += sprintf(buf+len, "%s", "FUNCTIONAL ");
+	if (filter_type & IRLAN_GROUP)
+		len += sprintf(buf+len, "%s", "GROUP ");
+	if (filter_type & IRLAN_MAC_FRAME)
+		len += sprintf(buf+len, "%s", "MAC_FRAME ");
+	if (filter_type & IRLAN_MULTICAST)
+		len += sprintf(buf+len, "%s", "MULTICAST ");
+	if (filter_type & IRLAN_BROADCAST)
+		len += sprintf(buf+len, "%s", "BROADCAST ");
+	if (filter_type & IRLAN_IPX_SOCKET)
+		len += sprintf(buf+len, "%s", "IPX_SOCKET");
+
+	len += sprintf(buf+len, "\n");
+
+	return len;
+}