4384be9a6888776baffce9b20393bbb59f830aa6
1 /*********************************************************************
3 * Filename: irlan_filter.c
6 * Status: Experimental.
7 * Author: Dag Brattli <dagb@cs.uit.no>
8 * Created at: Fri Jan 29 11:16:38 1999
9 * Modified at: Sat Oct 30 12:58:45 1999
10 * Modified by: Dag Brattli <dagb@cs.uit.no>
12 * Copyright (c) 1998-1999 Dag Brattli, All Rights Reserved.
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License as
16 * published by the Free Software Foundation; either version 2 of
17 * the License, or (at your option) any later version.
19 * Neither Dag Brattli nor University of Tromsø admit liability nor
20 * provide warranty for any of this software. This material is
21 * provided "AS-IS" and at no charge.
23 ********************************************************************/
25 #include <linux/skbuff.h>
26 #include <linux/random.h>
27 #include <linux/seq_file.h>
29 #include <net/irda/irlan_common.h>
30 #include <net/irda/irlan_filter.h>
33 * Function irlan_filter_request (self, skb)
35 * Handle filter request from client peer device
38 void irlan_filter_request(struct irlan_cb
*self
, struct sk_buff
*skb
)
40 IRDA_ASSERT(self
!= NULL
, return;);
41 IRDA_ASSERT(self
->magic
== IRLAN_MAGIC
, return;);
43 if ((self
->provider
.filter_type
== IRLAN_DIRECTED
) &&
44 (self
->provider
.filter_operation
== DYNAMIC
))
46 IRDA_DEBUG(0, "Giving peer a dynamic Ethernet address\n");
47 self
->provider
.mac_address
[0] = 0x40;
48 self
->provider
.mac_address
[1] = 0x00;
49 self
->provider
.mac_address
[2] = 0x00;
50 self
->provider
.mac_address
[3] = 0x00;
52 /* Use arbitration value to generate MAC address */
53 if (self
->provider
.access_type
== ACCESS_PEER
) {
54 self
->provider
.mac_address
[4] =
55 self
->provider
.send_arb_val
& 0xff;
56 self
->provider
.mac_address
[5] =
57 (self
->provider
.send_arb_val
>> 8) & 0xff;
59 /* Just generate something for now */
60 get_random_bytes(self
->provider
.mac_address
+4, 1);
61 get_random_bytes(self
->provider
.mac_address
+5, 1);
64 skb
->data
[0] = 0x00; /* Success */
66 irlan_insert_string_param(skb
, "FILTER_MODE", "NONE");
67 irlan_insert_short_param(skb
, "MAX_ENTRY", 0x0001);
68 irlan_insert_array_param(skb
, "FILTER_ENTRY",
69 self
->provider
.mac_address
, 6);
73 if ((self
->provider
.filter_type
== IRLAN_DIRECTED
) &&
74 (self
->provider
.filter_mode
== FILTER
))
76 IRDA_DEBUG(0, "Directed filter on\n");
77 skb
->data
[0] = 0x00; /* Success */
81 if ((self
->provider
.filter_type
== IRLAN_DIRECTED
) &&
82 (self
->provider
.filter_mode
== NONE
))
84 IRDA_DEBUG(0, "Directed filter off\n");
85 skb
->data
[0] = 0x00; /* Success */
90 if ((self
->provider
.filter_type
== IRLAN_BROADCAST
) &&
91 (self
->provider
.filter_mode
== FILTER
))
93 IRDA_DEBUG(0, "Broadcast filter on\n");
94 skb
->data
[0] = 0x00; /* Success */
98 if ((self
->provider
.filter_type
== IRLAN_BROADCAST
) &&
99 (self
->provider
.filter_mode
== NONE
))
101 IRDA_DEBUG(0, "Broadcast filter off\n");
102 skb
->data
[0] = 0x00; /* Success */
106 if ((self
->provider
.filter_type
== IRLAN_MULTICAST
) &&
107 (self
->provider
.filter_mode
== FILTER
))
109 IRDA_DEBUG(0, "Multicast filter on\n");
110 skb
->data
[0] = 0x00; /* Success */
114 if ((self
->provider
.filter_type
== IRLAN_MULTICAST
) &&
115 (self
->provider
.filter_mode
== NONE
))
117 IRDA_DEBUG(0, "Multicast filter off\n");
118 skb
->data
[0] = 0x00; /* Success */
122 if ((self
->provider
.filter_type
== IRLAN_MULTICAST
) &&
123 (self
->provider
.filter_operation
== GET
))
125 IRDA_DEBUG(0, "Multicast filter get\n");
126 skb
->data
[0] = 0x00; /* Success? */
128 irlan_insert_string_param(skb
, "FILTER_MODE", "NONE");
129 irlan_insert_short_param(skb
, "MAX_ENTRY", 16);
132 skb
->data
[0] = 0x00; /* Command not supported */
135 IRDA_DEBUG(0, "Not implemented!\n");
139 * Function check_request_param (self, param, value)
141 * Check parameters in request from peer device
144 void irlan_check_command_param(struct irlan_cb
*self
, char *param
, char *value
)
148 IRDA_DEBUG(4, "%s()\n", __FUNCTION__
);
152 IRDA_ASSERT(self
!= NULL
, return;);
153 IRDA_ASSERT(self
->magic
== IRLAN_MAGIC
, return;);
155 IRDA_DEBUG(4, "%s, %s\n", param
, value
);
158 * This is experimental!! DB.
160 if (strcmp(param
, "MODE") == 0) {
161 IRDA_DEBUG(0, "%s()\n", __FUNCTION__
);
162 self
->use_udata
= TRUE
;
169 if (strcmp(param
, "FILTER_TYPE") == 0) {
170 if (strcmp(value
, "DIRECTED") == 0) {
171 self
->provider
.filter_type
= IRLAN_DIRECTED
;
174 if (strcmp(value
, "MULTICAST") == 0) {
175 self
->provider
.filter_type
= IRLAN_MULTICAST
;
178 if (strcmp(value
, "BROADCAST") == 0) {
179 self
->provider
.filter_type
= IRLAN_BROADCAST
;
186 if (strcmp(param
, "FILTER_MODE") == 0) {
187 if (strcmp(value
, "ALL") == 0) {
188 self
->provider
.filter_mode
= ALL
;
191 if (strcmp(value
, "FILTER") == 0) {
192 self
->provider
.filter_mode
= FILTER
;
195 if (strcmp(value
, "NONE") == 0) {
196 self
->provider
.filter_mode
= FILTER
;
203 if (strcmp(param
, "FILTER_OPERATION") == 0) {
204 if (strcmp(value
, "DYNAMIC") == 0) {
205 self
->provider
.filter_operation
= DYNAMIC
;
208 if (strcmp(value
, "GET") == 0) {
209 self
->provider
.filter_operation
= GET
;
216 * Function irlan_print_filter (filter_type, buf)
218 * Print status of filter. Used by /proc file system
221 #ifdef CONFIG_PROC_FS
222 #define MASK2STR(m,s) { .mask = m, .str = s }
224 void irlan_print_filter(struct seq_file
*seq
, int filter_type
)
229 } filter_mask2str
[] = {
230 MASK2STR(IRLAN_DIRECTED
, "DIRECTED"),
231 MASK2STR(IRLAN_FUNCTIONAL
, "FUNCTIONAL"),
232 MASK2STR(IRLAN_GROUP
, "GROUP"),
233 MASK2STR(IRLAN_MAC_FRAME
, "MAC_FRAME"),
234 MASK2STR(IRLAN_MULTICAST
, "MULTICAST"),
235 MASK2STR(IRLAN_BROADCAST
, "BROADCAST"),
236 MASK2STR(IRLAN_IPX_SOCKET
, "IPX_SOCKET"),
240 for (p
= filter_mask2str
; p
->str
; p
++) {
241 if (filter_type
& p
->mask
)
242 seq_printf(seq
, "%s ", p
->str
);