| // SPDX-License-Identifier: (GPL-2.0 OR MPL-1.1) |
| /* |
| * |
| * Request/Indication/MacMgmt interface handling functions |
| * |
| * Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved. |
| * -------------------------------------------------------------------- |
| * |
| * linux-wlan |
| * |
| * The contents of this file are subject to the Mozilla Public |
| * License Version 1.1 (the "License"); you may not use this file |
| * except in compliance with the License. You may obtain a copy of |
| * the License at http://www.mozilla.org/MPL/ |
| * |
| * Software distributed under the License is distributed on an "AS |
| * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or |
| * implied. See the License for the specific language governing |
| * rights and limitations under the License. |
| * |
| * Alternatively, the contents of this file may be used under the |
| * terms of the GNU Public License version 2 (the "GPL"), in which |
| * case the provisions of the GPL are applicable instead of the |
| * above. If you wish to allow the use of your version of this file |
| * only under the terms of the GPL and not to allow others to use |
| * your version of this file under the MPL, indicate your decision |
| * by deleting the provisions above and replace them with the notice |
| * and other provisions required by the GPL. If you do not delete |
| * the provisions above, a recipient may use your version of this |
| * file under either the MPL or the GPL. |
| * |
| * -------------------------------------------------------------------- |
| * |
| * Inquiries regarding the linux-wlan Open Source project can be |
| * made directly to: |
| * |
| * AbsoluteValue Systems Inc. |
| * info@linux-wlan.com |
| * http://www.linux-wlan.com |
| * |
| * -------------------------------------------------------------------- |
| * |
| * Portions of the development of this software were funded by |
| * Intersil Corporation as part of PRISM(R) chipset product development. |
| * |
| * -------------------------------------------------------------------- |
| * |
| * This file contains the functions, types, and macros to support the |
| * MLME request interface that's implemented via the device ioctls. |
| * |
| * -------------------------------------------------------------------- |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/sched.h> |
| #include <linux/types.h> |
| #include <linux/skbuff.h> |
| #include <linux/wireless.h> |
| #include <linux/netdevice.h> |
| #include <linux/etherdevice.h> |
| #include <net/sock.h> |
| #include <linux/netlink.h> |
| |
| #include "p80211types.h" |
| #include "p80211hdr.h" |
| #include "p80211mgmt.h" |
| #include "p80211conv.h" |
| #include "p80211msg.h" |
| #include "p80211netdev.h" |
| #include "p80211ioctl.h" |
| #include "p80211metadef.h" |
| #include "p80211metastruct.h" |
| #include "p80211req.h" |
| |
| static void p80211req_handlemsg(struct wlandevice *wlandev, |
| struct p80211msg *msg); |
| static void p80211req_mibset_mibget(struct wlandevice *wlandev, |
| struct p80211msg_dot11req_mibget *mib_msg, |
| int isget); |
| |
| static void p80211req_handle_action(struct wlandevice *wlandev, u32 *data, |
| int isget, u32 flag) |
| { |
| if (isget) { |
| if (wlandev->hostwep & flag) |
| *data = P80211ENUM_truth_true; |
| else |
| *data = P80211ENUM_truth_false; |
| } else { |
| wlandev->hostwep &= ~flag; |
| if (*data == P80211ENUM_truth_true) |
| wlandev->hostwep |= flag; |
| } |
| } |
| |
| /*---------------------------------------------------------------- |
| * p80211req_dorequest |
| * |
| * Handles an MLME request/confirm message. |
| * |
| * Arguments: |
| * wlandev WLAN device struct |
| * msgbuf Buffer containing a request message |
| * |
| * Returns: |
| * 0 on success, an errno otherwise |
| * |
| * Call context: |
| * Potentially blocks the caller, so it's a good idea to |
| * not call this function from an interrupt context. |
| *---------------------------------------------------------------- |
| */ |
| int p80211req_dorequest(struct wlandevice *wlandev, u8 *msgbuf) |
| { |
| struct p80211msg *msg = (struct p80211msg *)msgbuf; |
| |
| /* Check to make sure the MSD is running */ |
| if (!((wlandev->msdstate == WLAN_MSD_HWPRESENT && |
| msg->msgcode == DIDMSG_LNXREQ_IFSTATE) || |
| wlandev->msdstate == WLAN_MSD_RUNNING || |
| wlandev->msdstate == WLAN_MSD_FWLOAD)) { |
| return -ENODEV; |
| } |
| |
| /* Check Permissions */ |
| if (!capable(CAP_NET_ADMIN) && |
| (msg->msgcode != DIDMSG_DOT11REQ_MIBGET)) { |
| netdev_err(wlandev->netdev, |
| "%s: only dot11req_mibget allowed for non-root.\n", |
| wlandev->name); |
| return -EPERM; |
| } |
| |
| /* Check for busy status */ |
| if (test_and_set_bit(1, &wlandev->request_pending)) |
| return -EBUSY; |
| |
| /* Allow p80211 to look at msg and handle if desired. */ |
| /* So far, all p80211 msgs are immediate, no waitq/timer necessary */ |
| /* This may change. */ |
| p80211req_handlemsg(wlandev, msg); |
| |
| /* Pass it down to wlandev via wlandev->mlmerequest */ |
| if (wlandev->mlmerequest) |
| wlandev->mlmerequest(wlandev, msg); |
| |
| clear_bit(1, &wlandev->request_pending); |
| return 0; /* if result==0, msg->status still may contain an err */ |
| } |
| |
| /*---------------------------------------------------------------- |
| * p80211req_handlemsg |
| * |
| * p80211 message handler. Primarily looks for messages that |
| * belong to p80211 and then dispatches the appropriate response. |
| * TODO: we don't do anything yet. Once the linuxMIB is better |
| * defined we'll need a get/set handler. |
| * |
| * Arguments: |
| * wlandev WLAN device struct |
| * msg message structure |
| * |
| * Returns: |
| * nothing (any results are set in the status field of the msg) |
| * |
| * Call context: |
| * Process thread |
| *---------------------------------------------------------------- |
| */ |
| static void p80211req_handlemsg(struct wlandevice *wlandev, |
| struct p80211msg *msg) |
| { |
| switch (msg->msgcode) { |
| case DIDMSG_LNXREQ_HOSTWEP: { |
| struct p80211msg_lnxreq_hostwep *req = |
| (struct p80211msg_lnxreq_hostwep *)msg; |
| wlandev->hostwep &= |
| ~(HOSTWEP_DECRYPT | HOSTWEP_ENCRYPT); |
| if (req->decrypt.data == P80211ENUM_truth_true) |
| wlandev->hostwep |= HOSTWEP_DECRYPT; |
| if (req->encrypt.data == P80211ENUM_truth_true) |
| wlandev->hostwep |= HOSTWEP_ENCRYPT; |
| |
| break; |
| } |
| case DIDMSG_DOT11REQ_MIBGET: |
| case DIDMSG_DOT11REQ_MIBSET: { |
| int isget = (msg->msgcode == DIDMSG_DOT11REQ_MIBGET); |
| struct p80211msg_dot11req_mibget *mib_msg = |
| (struct p80211msg_dot11req_mibget *)msg; |
| p80211req_mibset_mibget(wlandev, mib_msg, isget); |
| break; |
| } |
| } /* switch msg->msgcode */ |
| } |
| |
| static void p80211req_mibset_mibget(struct wlandevice *wlandev, |
| struct p80211msg_dot11req_mibget *mib_msg, |
| int isget) |
| { |
| struct p80211itemd *mibitem = |
| (struct p80211itemd *)mib_msg->mibattribute.data; |
| struct p80211pstrd *pstr = (struct p80211pstrd *)mibitem->data; |
| u8 *key = mibitem->data + sizeof(struct p80211pstrd); |
| |
| switch (mibitem->did) { |
| case didmib_dot11smt_wepdefaultkeystable_key(1): |
| case didmib_dot11smt_wepdefaultkeystable_key(2): |
| case didmib_dot11smt_wepdefaultkeystable_key(3): |
| case didmib_dot11smt_wepdefaultkeystable_key(4): |
| if (!isget) |
| wep_change_key(wlandev, |
| P80211DID_ITEM(mibitem->did) - 1, |
| key, pstr->len); |
| break; |
| |
| case DIDMIB_DOT11SMT_PRIVACYTABLE_WEPDEFAULTKEYID: { |
| u32 *data = (u32 *)mibitem->data; |
| |
| if (isget) { |
| *data = wlandev->hostwep & HOSTWEP_DEFAULTKEY_MASK; |
| } else { |
| wlandev->hostwep &= ~(HOSTWEP_DEFAULTKEY_MASK); |
| wlandev->hostwep |= (*data & HOSTWEP_DEFAULTKEY_MASK); |
| } |
| break; |
| } |
| case DIDMIB_DOT11SMT_PRIVACYTABLE_PRIVACYINVOKED: { |
| u32 *data = (u32 *)mibitem->data; |
| |
| p80211req_handle_action(wlandev, data, isget, |
| HOSTWEP_PRIVACYINVOKED); |
| break; |
| } |
| case DIDMIB_DOT11SMT_PRIVACYTABLE_EXCLUDEUNENCRYPTED: { |
| u32 *data = (u32 *)mibitem->data; |
| |
| p80211req_handle_action(wlandev, data, isget, |
| HOSTWEP_EXCLUDEUNENCRYPTED); |
| break; |
| } |
| } |
| } |