path: root/drivers/staging/wlan-ng/prism2mgmt.c

/* src/prism2/driver/prism2mgmt.c
*
* Management request handler 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.
*
* --------------------------------------------------------------------
*
* The functions in this file handle management requests sent from
* user mode.
*
* Most of these functions have two separate blocks of code that are
* conditional on whether this is a station or an AP.  This is used
* to separate out the STA and AP responses to these management primitives.
* It's a choice (good, bad, indifferent?) to have the code in the same
* place so it's clear that the same primitive is implemented in both
* cases but has different behavior.
*
* --------------------------------------------------------------------
*/

#include <linux/if_arp.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/wait.h>
#include <linux/sched.h>
#include <linux/types.h>
#include <linux/wireless.h>
#include <linux/netdevice.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <asm/byteorder.h>
#include <linux/random.h>
#include <linux/usb.h>
#include <linux/bitops.h>

#include "p80211types.h"
#include "p80211hdr.h"
#include "p80211mgmt.h"
#include "p80211conv.h"
#include "p80211msg.h"
#include "p80211netdev.h"
#include "p80211metadef.h"
#include "p80211metastruct.h"
#include "hfa384x.h"
#include "prism2mgmt.h"

/* Converts 802.11 format rate specifications to prism2 */
#define p80211rate_to_p2bit(n)	((((n)&~BIT(7)) == 2) ? BIT(0) :  \
				 (((n)&~BIT(7)) == 4) ? BIT(1) : \
				 (((n)&~BIT(7)) == 11) ? BIT(2) : \
				 (((n)&~BIT(7)) == 22) ? BIT(3) : 0)

/*----------------------------------------------------------------
* prism2mgmt_scan
*
* Initiate a scan for BSSs.
*
* This function corresponds to MLME-scan.request and part of
* MLME-scan.confirm.  As far as I can tell in the standard, there
* are no restrictions on when a scan.request may be issued.  We have
* to handle in whatever state the driver/MAC happen to be.
*
* Arguments:
*	wlandev		wlan device structure
*	msgp		ptr to msg buffer
*
* Returns:
*	0	success and done
*	<0	success, but we're waiting for something to finish.
*	>0	an error occurred while handling the message.
* Side effects:
*
* Call context:
*	process thread  (usually)
*	interrupt
----------------------------------------------------------------*/
int prism2mgmt_scan(wlandevice_t *wlandev, void *msgp)
{
	int result = 0;
	hfa384x_t *hw = wlandev->priv;
	struct p80211msg_dot11req_scan *msg = msgp;
	u16 roamingmode, word;
	int i, timeout;
	int istmpenable = 0;

	hfa384x_HostScanRequest_data_t scanreq;

	/* gatekeeper check */
	if (HFA384x_FIRMWARE_VERSION(hw->ident_sta_fw.major,
				     hw->ident_sta_fw.minor,
				     hw->ident_sta_fw.variant) <
	    HFA384x_FIRMWARE_VERSION(1, 3, 2)) {
		printk(KERN_ERR
		       "HostScan not supported with current firmware (<1.3.2).\n");
		result = 1;
		msg->