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 #include <linux/module.h>
54 #include <linux/kernel.h>
55 #include <linux/sched.h>
56 #include <linux/types.h>
57 #include <linux/skbuff.h>
58 #include <linux/slab.h>
59 #include <linux/wireless.h>
60 #include <linux/netdevice.h>
61 #include <linux/etherdevice.h>
63 #include <linux/netlink.h>
65 #include "wlan_compat.h"
67 #include "p80211types.h"
68 #include "p80211hdr.h"
69 #include "p80211mgmt.h"
70 #include "p80211conv.h"
71 #include "p80211msg.h"
72 #include "p80211netdev.h"
73 #include "p80211ioctl.h"
74 #include "p80211metadef.h"
75 #include "p80211metastruct.h"
76 #include "p80211req.h"
78 static void p80211req_handlemsg(wlandevice_t *wlandev, p80211msg_t *msg);
79 static int p80211req_mibset_mibget(wlandevice_t *wlandev,
80 p80211msg_dot11req_mibget_t *mib_msg,
83 /*----------------------------------------------------------------
86 * Handles an MLME reqest/confirm message.
89 * wlandev WLAN device struct
90 * msgbuf Buffer containing a request message
93 * 0 on success, an errno otherwise
96 * Potentially blocks the caller, so it's a good idea to
97 * not call this function from an interrupt context.
98 ----------------------------------------------------------------*/
99 int p80211req_dorequest(wlandevice_t *wlandev, u8 *msgbuf)
102 p80211msg_t *msg = (p80211msg_t *) msgbuf;
104 /* Check to make sure the MSD is running */
105 if (!((wlandev->msdstate == WLAN_MSD_HWPRESENT &&
106 msg->msgcode == DIDmsg_lnxreq_ifstate) ||
107 wlandev->msdstate == WLAN_MSD_RUNNING ||
108 wlandev->msdstate == WLAN_MSD_FWLOAD)) {
112 /* Check Permissions */
113 if (!capable(CAP_NET_ADMIN) && (msg->msgcode != DIDmsg_dot11req_mibget)) {
115 "%s: only dot11req_mibget allowed for non-root.\n",
120 /* Check for busy status */
121 if (test_and_set_bit(1, &(wlandev->request_pending)))
124 /* Allow p80211 to look at msg and handle if desired. */
125 /* So far, all p80211 msgs are immediate, no waitq/timer necessary */
126 /* This may change. */
127 p80211req_handlemsg(wlandev, msg);
129 /* Pass it down to wlandev via wlandev->mlmerequest */
130 if (wlandev->mlmerequest != NULL)
131 wlandev->mlmerequest(wlandev, msg);
133 clear_bit(1, &(wlandev->request_pending));
134 return result; /* if result==0, msg->status still may contain an err */
137 /*----------------------------------------------------------------
138 * p80211req_handlemsg
140 * p80211 message handler. Primarily looks for messages that
141 * belong to p80211 and then dispatches the appropriate response.
142 * TODO: we don't do anything yet. Once the linuxMIB is better
143 * defined we'll need a get/set handler.
146 * wlandev WLAN device struct
147 * msg message structure
150 * nothing (any results are set in the status field of the msg)
154 ----------------------------------------------------------------*/
155 static void p80211req_handlemsg(wlandevice_t *wlandev, p80211msg_t *msg)
157 switch (msg->msgcode) {
159 case DIDmsg_lnxreq_hostwep:{
160 p80211msg_lnxreq_hostwep_t *req =
161 (p80211msg_lnxreq_hostwep_t *) msg;
163 ~(HOSTWEP_DECRYPT | HOSTWEP_ENCRYPT);
164 if (req->decrypt.data == P80211ENUM_truth_true)
165 wlandev->hostwep |= HOSTWEP_DECRYPT;
166 if (req->encrypt.data == P80211ENUM_truth_true)
167 wlandev->hostwep |= HOSTWEP_ENCRYPT;
171 case DIDmsg_dot11req_mibget:
172 case DIDmsg_dot11req_mibset:{
173 int isget = (msg->msgcode == DIDmsg_dot11req_mibget);
174 p80211msg_dot11req_mibget_t *mib_msg =
175 (p80211msg_dot11req_mibget_t *) msg;
176 p80211req_mibset_mibget(wlandev, mib_msg, isget);
180 } /* switch msg->msgcode */
185 static int p80211req_mibset_mibget(wlandevice_t *wlandev,
186 p80211msg_dot11req_mibget_t *mib_msg,
189 p80211itemd_t *mibitem = (p80211itemd_t *) mib_msg->mibattribute.data;
190 p80211pstrd_t *pstr = (p80211pstrd_t *) mibitem->data;
191 u8 *key = mibitem->data + sizeof(p80211pstrd_t);
193 switch (mibitem->did) {
194 case DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey0:{
196 wep_change_key(wlandev, 0, key, pstr->len);
199 case DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey1:{
201 wep_change_key(wlandev, 1, key, pstr->len);
204 case DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey2:{
206 wep_change_key(wlandev, 2, key, pstr->len);
209 case DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey3:{
211 wep_change_key(wlandev, 3, key, pstr->len);
214 case DIDmib_dot11smt_dot11PrivacyTable_dot11WEPDefaultKeyID:{
215 u32 *data = (u32 *) mibitem->data;
219 wlandev->hostwep & HOSTWEP_DEFAULTKEY_MASK;
221 wlandev->hostwep &= ~(HOSTWEP_DEFAULTKEY_MASK);
224 (*data & HOSTWEP_DEFAULTKEY_MASK);
228 case DIDmib_dot11smt_dot11PrivacyTable_dot11PrivacyInvoked:{
229 u32 *data = (u32 *) mibitem->data;
232 if (wlandev->hostwep & HOSTWEP_PRIVACYINVOKED)
233 *data = P80211ENUM_truth_true;
235 *data = P80211ENUM_truth_false;
237 wlandev->hostwep &= ~(HOSTWEP_PRIVACYINVOKED);
238 if (*data == P80211ENUM_truth_true)
240 HOSTWEP_PRIVACYINVOKED;
244 case DIDmib_dot11smt_dot11PrivacyTable_dot11ExcludeUnencrypted:{
245 u32 *data = (u32 *) mibitem->data;
249 hostwep & HOSTWEP_EXCLUDEUNENCRYPTED)
250 *data = P80211ENUM_truth_true;
252 *data = P80211ENUM_truth_false;
255 ~(HOSTWEP_EXCLUDEUNENCRYPTED);
256 if (*data == P80211ENUM_truth_true)
258 HOSTWEP_EXCLUDEUNENCRYPTED;