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00b3ed16 GKH |
1 | /* src/p80211/p80211req.c |
2 | * | |
3 | * Request/Indication/MacMgmt interface handling functions | |
4 | * | |
5 | * Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved. | |
6 | * -------------------------------------------------------------------- | |
7 | * | |
8 | * linux-wlan | |
9 | * | |
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/ | |
14 | * | |
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. | |
19 | * | |
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. | |
30 | * | |
31 | * -------------------------------------------------------------------- | |
32 | * | |
33 | * Inquiries regarding the linux-wlan Open Source project can be | |
34 | * made directly to: | |
35 | * | |
36 | * AbsoluteValue Systems Inc. | |
37 | * info@linux-wlan.com | |
38 | * http://www.linux-wlan.com | |
39 | * | |
40 | * -------------------------------------------------------------------- | |
41 | * | |
42 | * Portions of the development of this software were funded by | |
43 | * Intersil Corporation as part of PRISM(R) chipset product development. | |
44 | * | |
45 | * -------------------------------------------------------------------- | |
46 | * | |
47 | * This file contains the functions, types, and macros to support the | |
48 | * MLME request interface that's implemented via the device ioctls. | |
49 | * | |
50 | * -------------------------------------------------------------------- | |
51 | */ | |
52 | ||
00b3ed16 GKH |
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> | |
00b3ed16 GKH |
58 | #include <linux/wireless.h> |
59 | #include <linux/netdevice.h> | |
60 | #include <linux/etherdevice.h> | |
61 | #include <net/sock.h> | |
62 | #include <linux/netlink.h> | |
63 | ||
00b3ed16 GKH |
64 | #include "p80211types.h" |
65 | #include "p80211hdr.h" | |
66 | #include "p80211mgmt.h" | |
67 | #include "p80211conv.h" | |
68 | #include "p80211msg.h" | |
69 | #include "p80211netdev.h" | |
70 | #include "p80211ioctl.h" | |
71 | #include "p80211metadef.h" | |
72 | #include "p80211metastruct.h" | |
73 | #include "p80211req.h" | |
74 | ||
3d049431 | 75 | static void p80211req_handlemsg(wlandevice_t *wlandev, struct p80211msg *msg); |
bdced87c | 76 | static void p80211req_mibset_mibget(wlandevice_t *wlandev, |
b6bb56e6 | 77 | struct p80211msg_dot11req_mibget *mib_msg, |
b1de9675 | 78 | int isget); |
00b3ed16 GKH |
79 | |
80 | /*---------------------------------------------------------------- | |
81 | * p80211req_dorequest | |
82 | * | |
83 | * Handles an MLME reqest/confirm message. | |
84 | * | |
85 | * Arguments: | |
86 | * wlandev WLAN device struct | |
87 | * msgbuf Buffer containing a request message | |
88 | * | |
89 | * Returns: | |
90 | * 0 on success, an errno otherwise | |
91 | * | |
92 | * Call context: | |
93 | * Potentially blocks the caller, so it's a good idea to | |
94 | * not call this function from an interrupt context. | |
95 | ----------------------------------------------------------------*/ | |
5dd8acc8 | 96 | int p80211req_dorequest(wlandevice_t *wlandev, u8 *msgbuf) |
00b3ed16 | 97 | { |
3d049431 | 98 | struct p80211msg *msg = (struct p80211msg *) msgbuf; |
00b3ed16 | 99 | |
00b3ed16 | 100 | /* Check to make sure the MSD is running */ |
b1de9675 MM |
101 | if (!((wlandev->msdstate == WLAN_MSD_HWPRESENT && |
102 | msg->msgcode == DIDmsg_lnxreq_ifstate) || | |
103 | wlandev->msdstate == WLAN_MSD_RUNNING || | |
104 | wlandev->msdstate == WLAN_MSD_FWLOAD)) { | |
00b3ed16 GKH |
105 | return -ENODEV; |
106 | } | |
107 | ||
108 | /* Check Permissions */ | |
67a7b378 PR |
109 | if (!capable(CAP_NET_ADMIN) && |
110 | (msg->msgcode != DIDmsg_dot11req_mibget)) { | |
02d9b1eb VO |
111 | netdev_err(wlandev->netdev, |
112 | "%s: only dot11req_mibget allowed for non-root.\n", | |
113 | wlandev->name); | |
00b3ed16 GKH |
114 | return -EPERM; |
115 | } | |
116 | ||
117 | /* Check for busy status */ | |
b1de9675 | 118 | if (test_and_set_bit(1, &(wlandev->request_pending))) |
00b3ed16 | 119 | return -EBUSY; |
00b3ed16 GKH |
120 | |
121 | /* Allow p80211 to look at msg and handle if desired. */ | |
122 | /* So far, all p80211 msgs are immediate, no waitq/timer necessary */ | |
123 | /* This may change. */ | |
124 | p80211req_handlemsg(wlandev, msg); | |
125 | ||
126 | /* Pass it down to wlandev via wlandev->mlmerequest */ | |
b1de9675 | 127 | if (wlandev->mlmerequest != NULL) |
00b3ed16 GKH |
128 | wlandev->mlmerequest(wlandev, msg); |
129 | ||
b1de9675 | 130 | clear_bit(1, &(wlandev->request_pending)); |
4764ca98 | 131 | return 0; /* if result==0, msg->status still may contain an err */ |
00b3ed16 GKH |
132 | } |
133 | ||
134 | /*---------------------------------------------------------------- | |
135 | * p80211req_handlemsg | |
136 | * | |
137 | * p80211 message handler. Primarily looks for messages that | |
138 | * belong to p80211 and then dispatches the appropriate response. | |
139 | * TODO: we don't do anything yet. Once the linuxMIB is better | |
140 | * defined we'll need a get/set handler. | |
141 | * | |
142 | * Arguments: | |
143 | * wlandev WLAN device struct | |
144 | * msg message structure | |
145 | * | |
146 | * Returns: | |
147 | * nothing (any results are set in the status field of the msg) | |
148 | * | |
149 | * Call context: | |
150 | * Process thread | |
151 | ----------------------------------------------------------------*/ | |
3d049431 | 152 | static void p80211req_handlemsg(wlandevice_t *wlandev, struct p80211msg *msg) |
00b3ed16 | 153 | { |
00b3ed16 GKH |
154 | switch (msg->msgcode) { |
155 | ||
b1de9675 | 156 | case DIDmsg_lnxreq_hostwep:{ |
009629ef DN |
157 | struct p80211msg_lnxreq_hostwep *req = |
158 | (struct p80211msg_lnxreq_hostwep *) msg; | |
159 | wlandev->hostwep &= | |
160 | ~(HOSTWEP_DECRYPT | HOSTWEP_ENCRYPT); | |
161 | if (req->decrypt.data == P80211ENUM_truth_true) | |
162 | wlandev->hostwep |= HOSTWEP_DECRYPT; | |
163 | if (req->encrypt.data == P80211ENUM_truth_true) | |
164 | wlandev->hostwep |= HOSTWEP_ENCRYPT; | |
00b3ed16 | 165 | |
009629ef DN |
166 | break; |
167 | } | |
00b3ed16 | 168 | case DIDmsg_dot11req_mibget: |
b1de9675 | 169 | case DIDmsg_dot11req_mibset:{ |
009629ef DN |
170 | int isget = (msg->msgcode == DIDmsg_dot11req_mibget); |
171 | struct p80211msg_dot11req_mibget *mib_msg = | |
172 | (struct p80211msg_dot11req_mibget *) msg; | |
173 | p80211req_mibset_mibget(wlandev, mib_msg, isget); | |
174 | break; | |
175 | } | |
b1de9675 | 176 | } /* switch msg->msgcode */ |
00b3ed16 GKH |
177 | } |
178 | ||
bdced87c | 179 | static void p80211req_mibset_mibget(wlandevice_t *wlandev, |
b6bb56e6 | 180 | struct p80211msg_dot11req_mibget *mib_msg, |
00b3ed16 GKH |
181 | int isget) |
182 | { | |
b1de9675 MM |
183 | p80211itemd_t *mibitem = (p80211itemd_t *) mib_msg->mibattribute.data; |
184 | p80211pstrd_t *pstr = (p80211pstrd_t *) mibitem->data; | |
aaad4303 | 185 | u8 *key = mibitem->data + sizeof(p80211pstrd_t); |
00b3ed16 | 186 | |
00b3ed16 | 187 | switch (mibitem->did) { |
b1de9675 | 188 | case DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey0:{ |
7694538c DN |
189 | if (!isget) |
190 | wep_change_key(wlandev, 0, key, pstr->len); | |
191 | break; | |
192 | } | |
b1de9675 | 193 | case DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey1:{ |
7694538c DN |
194 | if (!isget) |
195 | wep_change_key(wlandev, 1, key, pstr->len); | |
196 | break; | |
197 | } | |
b1de9675 | 198 | case DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey2:{ |
7694538c DN |
199 | if (!isget) |
200 | wep_change_key(wlandev, 2, key, pstr->len); | |
201 | break; | |
202 | } | |
b1de9675 | 203 | case DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey3:{ |
7694538c DN |
204 | if (!isget) |
205 | wep_change_key(wlandev, 3, key, pstr->len); | |
206 | break; | |
207 | } | |
b1de9675 | 208 | case DIDmib_dot11smt_dot11PrivacyTable_dot11WEPDefaultKeyID:{ |
7694538c | 209 | u32 *data = (u32 *) mibitem->data; |
00b3ed16 | 210 | |
7694538c DN |
211 | if (isget) { |
212 | *data = wlandev->hostwep & HOSTWEP_DEFAULTKEY_MASK; | |
213 | } else { | |
214 | wlandev->hostwep &= ~(HOSTWEP_DEFAULTKEY_MASK); | |
215 | wlandev->hostwep |= (*data & HOSTWEP_DEFAULTKEY_MASK); | |
b1de9675 | 216 | } |
7694538c DN |
217 | break; |
218 | } | |
b1de9675 | 219 | case DIDmib_dot11smt_dot11PrivacyTable_dot11PrivacyInvoked:{ |
7694538c DN |
220 | u32 *data = (u32 *) mibitem->data; |
221 | ||
222 | if (isget) { | |
223 | if (wlandev->hostwep & HOSTWEP_PRIVACYINVOKED) | |
224 | *data = P80211ENUM_truth_true; | |
225 | else | |
226 | *data = P80211ENUM_truth_false; | |
227 | } else { | |
228 | wlandev->hostwep &= ~(HOSTWEP_PRIVACYINVOKED); | |
229 | if (*data == P80211ENUM_truth_true) | |
230 | wlandev->hostwep |= HOSTWEP_PRIVACYINVOKED; | |
00b3ed16 | 231 | } |
7694538c DN |
232 | break; |
233 | } | |
b1de9675 | 234 | case DIDmib_dot11smt_dot11PrivacyTable_dot11ExcludeUnencrypted:{ |
7694538c DN |
235 | u32 *data = (u32 *) mibitem->data; |
236 | ||
237 | if (isget) { | |
238 | if (wlandev->hostwep & HOSTWEP_EXCLUDEUNENCRYPTED) | |
239 | *data = P80211ENUM_truth_true; | |
240 | else | |
241 | *data = P80211ENUM_truth_false; | |
242 | } else { | |
243 | wlandev->hostwep &= ~(HOSTWEP_EXCLUDEUNENCRYPTED); | |
244 | if (*data == P80211ENUM_truth_true) | |
245 | wlandev->hostwep |= HOSTWEP_EXCLUDEUNENCRYPTED; | |
00b3ed16 | 246 | } |
7694538c DN |
247 | break; |
248 | } | |
00b3ed16 | 249 | } |
00b3ed16 | 250 | } |