1 /* src/p80211/p80211req.c
3 * Request/Indication/MacMgmt interface handling functions
5 * Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved.
6 * --------------------------------------------------------------------
10 * The contents of this file are subject to the Mozilla Public
11 * License Version 1.1 (the "License"); you may not use this file
12 * except in compliance with the License. You may obtain a copy of
13 * the License at http://www.mozilla.org/MPL/
15 * Software distributed under the License is distributed on an "AS
16 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
17 * implied. See the License for the specific language governing
18 * rights and limitations under the License.
20 * Alternatively, the contents of this file may be used under the
21 * terms of the GNU Public License version 2 (the "GPL"), in which
22 * case the provisions of the GPL are applicable instead of the
23 * above. If you wish to allow the use of your version of this file
24 * only under the terms of the GPL and not to allow others to use
25 * your version of this file under the MPL, indicate your decision
26 * by deleting the provisions above and replace them with the notice
27 * and other provisions required by the GPL. If you do not delete
28 * the provisions above, a recipient may use your version of this
29 * file under either the MPL or the GPL.
31 * --------------------------------------------------------------------
33 * Inquiries regarding the linux-wlan Open Source project can be
36 * AbsoluteValue Systems Inc.
38 * http://www.linux-wlan.com
40 * --------------------------------------------------------------------
42 * Portions of the development of this software were funded by
43 * Intersil Corporation as part of PRISM(R) chipset product development.
45 * --------------------------------------------------------------------
47 * This file contains the functions, types, and macros to support the
48 * MLME request interface that's implemented via the device ioctls.
50 * --------------------------------------------------------------------
53 /*================================================================*/
58 #include <linux/module.h>
59 #include <linux/kernel.h>
60 #include <linux/sched.h>
61 #include <linux/types.h>
62 #include <linux/skbuff.h>
63 #include <linux/slab.h>
64 #include <linux/wireless.h>
65 #include <linux/netdevice.h>
66 #include <linux/etherdevice.h>
68 #include <linux/netlink.h>
70 #include "wlan_compat.h"
72 /*================================================================*/
73 /* Project Includes */
75 #include "p80211types.h"
76 #include "p80211hdr.h"
77 #include "p80211mgmt.h"
78 #include "p80211conv.h"
79 #include "p80211msg.h"
80 #include "p80211netdev.h"
81 #include "p80211ioctl.h"
82 #include "p80211metadef.h"
83 #include "p80211metastruct.h"
84 #include "p80211req.h"
86 /*================================================================*/
89 /* Maximum amount of time we'll wait for a request to complete */
90 #define P80211REQ_MAXTIME 3*HZ /* 3 seconds */
92 /*================================================================*/
95 /*================================================================*/
98 /*================================================================*/
99 /* Local Static Definitions */
101 /*================================================================*/
102 /* Local Function Declarations */
104 static void p80211req_handlemsg( wlandevice_t *wlandev, p80211msg_t *msg);
105 static int p80211req_mibset_mibget(wlandevice_t *wlandev, p80211msg_dot11req_mibget_t *mib_msg, int isget);
107 /*================================================================*/
108 /* Function Definitions */
111 /*----------------------------------------------------------------
112 * p80211req_dorequest
114 * Handles an MLME reqest/confirm message.
117 * wlandev WLAN device struct
118 * msgbuf Buffer containing a request message
121 * 0 on success, an errno otherwise
124 * Potentially blocks the caller, so it's a good idea to
125 * not call this function from an interrupt context.
126 ----------------------------------------------------------------*/
127 int p80211req_dorequest( wlandevice_t *wlandev, u8 *msgbuf)
130 p80211msg_t *msg = (p80211msg_t*)msgbuf;
132 /* Check to make sure the MSD is running */
134 !((wlandev->msdstate == WLAN_MSD_HWPRESENT &&
135 msg->msgcode == DIDmsg_lnxreq_ifstate) ||
136 wlandev->msdstate == WLAN_MSD_RUNNING ||
137 wlandev->msdstate == WLAN_MSD_FWLOAD) ) {
141 /* Check Permissions */
142 if (!capable(CAP_NET_ADMIN) &&
143 (msg->msgcode != DIDmsg_dot11req_mibget)) {
144 WLAN_LOG_ERROR("%s: only dot11req_mibget allowed for non-root.\n", wlandev->name);
148 /* Check for busy status */
149 if ( test_and_set_bit(1, &(wlandev->request_pending))) {
153 /* Allow p80211 to look at msg and handle if desired. */
154 /* So far, all p80211 msgs are immediate, no waitq/timer necessary */
155 /* This may change. */
156 p80211req_handlemsg(wlandev, msg);
158 /* Pass it down to wlandev via wlandev->mlmerequest */
159 if ( wlandev->mlmerequest != NULL )
160 wlandev->mlmerequest(wlandev, msg);
162 clear_bit( 1, &(wlandev->request_pending));
163 return result; /* if result==0, msg->status still may contain an err */
166 /*----------------------------------------------------------------
167 * p80211req_handlemsg
169 * p80211 message handler. Primarily looks for messages that
170 * belong to p80211 and then dispatches the appropriate response.
171 * TODO: we don't do anything yet. Once the linuxMIB is better
172 * defined we'll need a get/set handler.
175 * wlandev WLAN device struct
176 * msg message structure
179 * nothing (any results are set in the status field of the msg)
183 ----------------------------------------------------------------*/
184 static void p80211req_handlemsg( wlandevice_t *wlandev, p80211msg_t *msg)
186 switch (msg->msgcode) {
188 case DIDmsg_lnxreq_hostwep: {
189 p80211msg_lnxreq_hostwep_t *req = (p80211msg_lnxreq_hostwep_t*) msg;
190 wlandev->hostwep &= ~(HOSTWEP_DECRYPT|HOSTWEP_ENCRYPT);
191 if (req->decrypt.data == P80211ENUM_truth_true)
192 wlandev->hostwep |= HOSTWEP_DECRYPT;
193 if (req->encrypt.data == P80211ENUM_truth_true)
194 wlandev->hostwep |= HOSTWEP_ENCRYPT;
198 case DIDmsg_dot11req_mibget:
199 case DIDmsg_dot11req_mibset: {
200 int isget = (msg->msgcode == DIDmsg_dot11req_mibget);
201 p80211msg_dot11req_mibget_t *mib_msg = (p80211msg_dot11req_mibget_t *) msg;
202 p80211req_mibset_mibget (wlandev, mib_msg, isget);
207 } /* switch msg->msgcode */
212 static int p80211req_mibset_mibget(wlandevice_t *wlandev,
213 p80211msg_dot11req_mibget_t *mib_msg,
216 p80211itemd_t *mibitem = (p80211itemd_t *) mib_msg->mibattribute.data;
217 p80211pstrd_t *pstr = (p80211pstrd_t*) mibitem->data;
218 u8 *key = mibitem->data + sizeof(p80211pstrd_t);
220 switch (mibitem->did) {
221 case DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey0: {
223 wep_change_key(wlandev, 0, key, pstr->len);
226 case DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey1: {
228 wep_change_key(wlandev, 1, key, pstr->len);
231 case DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey2: {
233 wep_change_key(wlandev, 2, key, pstr->len);
236 case DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey3: {
238 wep_change_key(wlandev, 3, key, pstr->len);
241 case DIDmib_dot11smt_dot11PrivacyTable_dot11WEPDefaultKeyID: {
242 u32 *data = (u32 *) mibitem->data;
245 *data = wlandev->hostwep & HOSTWEP_DEFAULTKEY_MASK;
247 wlandev->hostwep &= ~(HOSTWEP_DEFAULTKEY_MASK);
249 wlandev->hostwep |= (*data & HOSTWEP_DEFAULTKEY_MASK);
253 case DIDmib_dot11smt_dot11PrivacyTable_dot11PrivacyInvoked: {
254 u32 *data = (u32 *) mibitem->data;
257 if (wlandev->hostwep & HOSTWEP_PRIVACYINVOKED)
258 *data = P80211ENUM_truth_true;
260 *data = P80211ENUM_truth_false;
262 wlandev->hostwep &= ~(HOSTWEP_PRIVACYINVOKED);
263 if (*data == P80211ENUM_truth_true)
264 wlandev->hostwep |= HOSTWEP_PRIVACYINVOKED;
268 case DIDmib_dot11smt_dot11PrivacyTable_dot11ExcludeUnencrypted: {
269 u32 *data = (u32 *) mibitem->data;
272 if (wlandev->hostwep & HOSTWEP_EXCLUDEUNENCRYPTED)
273 *data = P80211ENUM_truth_true;
275 *data = P80211ENUM_truth_false;
277 wlandev->hostwep &= ~(HOSTWEP_EXCLUDEUNENCRYPTED);
278 if (*data == P80211ENUM_truth_true)
279 wlandev->hostwep |= HOSTWEP_EXCLUDEUNENCRYPTED;