--- /dev/null
+/* src/p80211/p80211req.c
+*
+* 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(wlandevice_t *wlandev, struct p80211msg *msg);
+static void p80211req_mibset_mibget(wlandevice_t *wlandev,
+ struct p80211msg_dot11req_mibget *mib_msg,
+ int isget);
+
+/*----------------------------------------------------------------
+* 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(wlandevice_t *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 != NULL)
+ 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(wlandevice_t *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(wlandevice_t *wlandev,
+ struct p80211msg_dot11req_mibget *mib_msg,
+ int isget)
+{
+ p80211itemd_t *mibitem = (p80211itemd_t *) mib_msg->mibattribute.data;
+ p80211pstrd_t *pstr = (p80211pstrd_t *) mibitem->data;
+ u8 *key = mibitem->data + sizeof(p80211pstrd_t);
+
+ switch (mibitem->did) {
+ case DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey0:{
+ if (!isget)
+ wep_change_key(wlandev, 0, key, pstr->len);
+ break;
+ }
+ case DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey1:{
+ if (!isget)
+ wep_change_key(wlandev, 1, key, pstr->len);
+ break;
+ }
+ case DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey2:{
+ if (!isget)
+ wep_change_key(wlandev, 2, key, pstr->len);
+ break;
+ }
+ case DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey3:{
+ if (!isget)
+ wep_change_key(wlandev, 3, key, pstr->len);
+ break;
+ }
+ case DIDmib_dot11smt_dot11PrivacyTable_dot11WEPDefaultKeyID:{
+ 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_dot11PrivacyTable_dot11PrivacyInvoked:{
+ u32 *data = (u32 *) mibitem->data;
+
+ if (isget) {
+ if (wlandev->hostwep & HOSTWEP_PRIVACYINVOKED)
+ *data = P80211ENUM_truth_true;
+ else
+ *data = P80211ENUM_truth_false;
+ } else {
+ wlandev->hostwep &= ~(HOSTWEP_PRIVACYINVOKED);
+ if (*data == P80211ENUM_truth_true)
+ wlandev->hostwep |= HOSTWEP_PRIVACYINVOKED;
+ }
+ break;
+ }
+ case DIDmib_dot11smt_dot11PrivacyTable_dot11ExcludeUnencrypted:{
+ u32 *data = (u32 *) mibitem->data;
+
+ if (isget) {
+ if (wlandev->hostwep & HOSTWEP_EXCLUDEUNENCRYPTED)
+ *data = P80211ENUM_truth_true;
+ else
+ *data = P80211ENUM_truth_false;
+ } else {
+ wlandev->hostwep &= ~(HOSTWEP_EXCLUDEUNENCRYPTED);
+ if (*data == P80211ENUM_truth_true)
+ wlandev->hostwep |= HOSTWEP_EXCLUDEUNENCRYPTED;
+ }
+ break;
+ }
+ }
+}
Code Review / kvmfornfv.git / blobdiff