diff options
Diffstat (limited to 'drivers/staging/wlan-ng/p80211req.c')
| -rw-r--r-- | drivers/staging/wlan-ng/p80211req.c | 250 |
1 files changed, 250 insertions, 0 deletions
diff --git a/drivers/staging/wlan-ng/p80211req.c b/drivers/staging/wlan-ng/p80211req.c new file mode 100644 index 000000000..4b84b568f --- /dev/null +++ b/drivers/staging/wlan-ng/p80211req.c @@ -0,0 +1,250 @@ +/* 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; + } + } +} |