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>
32 * Function irlan_filter_request (self, skb)
34 * Handle filter request from client peer device
37 void irlan_filter_request(struct irlan_cb
*self
, struct sk_buff
*skb
)
39 IRDA_ASSERT(self
!= NULL
, return;);
40 IRDA_ASSERT(self
->magic
== IRLAN_MAGIC
, return;);
42 if ((self
->provider
.filter_type
== IRLAN_DIRECTED
) &&
43 (self
->provider
.filter_operation
== DYNAMIC
))
45 IRDA_DEBUG(0, "Giving peer a dynamic Ethernet address\n");
46 self
->provider
.mac_address
[0] = 0x40;
47 self
->provider
.mac_address
[1] = 0x00;
48 self
->provider
.mac_address
[2] = 0x00;
49 self
->provider
.mac_address
[3] = 0x00;
51 /* Use arbitration value to generate MAC address */
52 if (self
->provider
.access_type
== ACCESS_PEER
) {
53 self
->provider
.mac_address
[4] =
54 self
->provider
.send_arb_val
& 0xff;
55 self
->provider
.mac_address
[5] =
56 (self
->provider
.send_arb_val
>> 8) & 0xff;
58 /* Just generate something for now */
59 get_random_bytes(self
->provider
.mac_address
+4, 1);
60 get_random_bytes(self
->provider
.mac_address
+5, 1);
63 skb
->data
[0] = 0x00; /* Success */
65 irlan_insert_string_param(skb
, "FILTER_MODE", "NONE");
66 irlan_insert_short_param(skb
, "MAX_ENTRY", 0x0001);
67 irlan_insert_array_param(skb
, "FILTER_ENTRY",
68 self
->provider
.mac_address
, 6);
72 if ((self
->provider
.filter_type
== IRLAN_DIRECTED
) &&
73 (self
->provider
.filter_mode
== FILTER
))
75 IRDA_DEBUG(0, "Directed filter on\n");
76 skb
->data
[0] = 0x00; /* Success */
80 if ((self
->provider
.filter_type
== IRLAN_DIRECTED
) &&
81 (self
->provider
.filter_mode
== NONE
))
83 IRDA_DEBUG(0, "Directed filter off\n");
84 skb
->data
[0] = 0x00; /* Success */
89 if ((self
->provider
.filter_type
== IRLAN_BROADCAST
) &&
90 (self
->provider
.filter_mode
== FILTER
))
92 IRDA_DEBUG(0, "Broadcast filter on\n");
93 skb
->data
[0] = 0x00; /* Success */
97 if ((self
->provider
.filter_type
== IRLAN_BROADCAST
) &&
98 (self
->provider
.filter_mode
== NONE
))
100 IRDA_DEBUG(0, "Broadcast filter off\n");
101 skb
->data
[0] = 0x00; /* Success */
105 if ((self
->provider
.filter_type
== IRLAN_MULTICAST
) &&
106 (self
->provider
.filter_mode
== FILTER
))
108 IRDA_DEBUG(0, "Multicast filter on\n");
109 skb
->data
[0] = 0x00; /* Success */
113 if ((self
->provider
.filter_type
== IRLAN_MULTICAST
) &&
114 (self
->provider
.filter_mode
== NONE
))
116 IRDA_DEBUG(0, "Multicast filter off\n");
117 skb
->data
[0] = 0x00; /* Success */
121 if ((self
->provider
.filter_type
== IRLAN_MULTICAST
) &&
122 (self
->provider
.filter_operation
== GET
))
124 IRDA_DEBUG(0, "Multicast filter get\n");
125 skb
->data
[0] = 0x00; /* Success? */
127 irlan_insert_string_param(skb
, "FILTER_MODE", "NONE");
128 irlan_insert_short_param(skb
, "MAX_ENTRY", 16);
131 skb
->data
[0] = 0x00; /* Command not supported */
134 IRDA_DEBUG(0, "Not implemented!\n");
138 * Function check_request_param (self, param, value)
140 * Check parameters in request from peer device
143 void irlan_check_command_param(struct irlan_cb
*self
, char *param
, char *value
)
147 IRDA_DEBUG(4, "%s()\n", __FUNCTION__
);
151 IRDA_ASSERT(self
!= NULL
, return;);
152 IRDA_ASSERT(self
->magic
== IRLAN_MAGIC
, return;);
154 IRDA_DEBUG(4, "%s, %s\n", param
, value
);
157 * This is experimental!! DB.
159 if (strcmp(param
, "MODE") == 0) {
160 IRDA_DEBUG(0, "%s()\n", __FUNCTION__
);
161 self
->use_udata
= TRUE
;
168 if (strcmp(param
, "FILTER_TYPE") == 0) {
169 if (strcmp(value
, "DIRECTED") == 0) {
170 self
->provider
.filter_type
= IRLAN_DIRECTED
;
173 if (strcmp(value
, "MULTICAST") == 0) {
174 self
->provider
.filter_type
= IRLAN_MULTICAST
;
177 if (strcmp(value
, "BROADCAST") == 0) {
178 self
->provider
.filter_type
= IRLAN_BROADCAST
;
185 if (strcmp(param
, "FILTER_MODE") == 0) {
186 if (strcmp(value
, "ALL") == 0) {
187 self
->provider
.filter_mode
= ALL
;
190 if (strcmp(value
, "FILTER") == 0) {
191 self
->provider
.filter_mode
= FILTER
;
194 if (strcmp(value
, "NONE") == 0) {
195 self
->provider
.filter_mode
= FILTER
;
202 if (strcmp(param
, "FILTER_OPERATION") == 0) {
203 if (strcmp(value
, "DYNAMIC") == 0) {
204 self
->provider
.filter_operation
= DYNAMIC
;
207 if (strcmp(value
, "GET") == 0) {
208 self
->provider
.filter_operation
= GET
;
215 * Function irlan_print_filter (filter_type, buf)
217 * Print status of filter. Used by /proc file system
220 #ifdef CONFIG_PROC_FS
221 #define MASK2STR(m,s) { .mask = m, .str = s }
223 void irlan_print_filter(struct seq_file
*seq
, int filter_type
)
228 } filter_mask2str
[] = {
229 MASK2STR(IRLAN_DIRECTED
, "DIRECTED"),
230 MASK2STR(IRLAN_FUNCTIONAL
, "FUNCTIONAL"),
231 MASK2STR(IRLAN_GROUP
, "GROUP"),
232 MASK2STR(IRLAN_MAC_FRAME
, "MAC_FRAME"),
233 MASK2STR(IRLAN_MULTICAST
, "MULTICAST"),
234 MASK2STR(IRLAN_BROADCAST
, "BROADCAST"),
235 MASK2STR(IRLAN_IPX_SOCKET
, "IPX_SOCKET"),
239 for (p
= filter_mask2str
; p
->str
; p
++) {
240 if (filter_type
& p
->mask
)
241 seq_printf(seq
, "%s ", p
->str
);