linux-imx

/*

 * UWB DRP IE management.

 *

 * Copyright (C) 2005-2006 Intel Corporation

 * Copyright (C) 2008 Cambridge Silicon Radio Ltd.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License version

 * 2 as published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program.  If not, see <http://www.gnu.org/licenses/>.

 */

#include <linux/kernel.h>

#include <linux/random.h>

#include <linux/slab.h>

#include <linux/uwb.h>

​

#include "uwb-internal.h"

​

​

/*

 * Return the reason code for a reservations's DRP IE.

 */

static int uwb_rsv_reason_code(struct uwb_rsv *rsv)

{

    static const int reason_codes[] = {

        [UWB_RSV_STATE_O_INITIATED]          = UWB_DRP_REASON_ACCEPTED,

        [UWB_RSV_STATE_O_PENDING]            = UWB_DRP_REASON_ACCEPTED,

        [UWB_RSV_STATE_O_MODIFIED]           = UWB_DRP_REASON_MODIFIED,

        [UWB_RSV_STATE_O_ESTABLISHED]        = UWB_DRP_REASON_ACCEPTED,

        [UWB_RSV_STATE_O_TO_BE_MOVED]        = UWB_DRP_REASON_ACCEPTED,

        [UWB_RSV_STATE_O_MOVE_COMBINING]     = UWB_DRP_REASON_MODIFIED,

        [UWB_RSV_STATE_O_MOVE_REDUCING]      = UWB_DRP_REASON_MODIFIED,

        [UWB_RSV_STATE_O_MOVE_EXPANDING]     = UWB_DRP_REASON_ACCEPTED,

        [UWB_RSV_STATE_T_ACCEPTED]           = UWB_DRP_REASON_ACCEPTED,

        [UWB_RSV_STATE_T_CONFLICT]           = UWB_DRP_REASON_CONFLICT,

        [UWB_RSV_STATE_T_PENDING]            = UWB_DRP_REASON_PENDING,

        [UWB_RSV_STATE_T_DENIED]             = UWB_DRP_REASON_DENIED,

        [UWB_RSV_STATE_T_RESIZED]            = UWB_DRP_REASON_ACCEPTED,

        [UWB_RSV_STATE_T_EXPANDING_ACCEPTED] = UWB_DRP_REASON_ACCEPTED,

        [UWB_RSV_STATE_T_EXPANDING_CONFLICT] = UWB_DRP_REASON_CONFLICT,

        [UWB_RSV_STATE_T_EXPANDING_PENDING]  = UWB_DRP_REASON_PENDING,

        [UWB_RSV_STATE_T_EXPANDING_DENIED]   = UWB_DRP_REASON_DENIED,

    };

​

    return reason_codes[rsv->state];

}

​

/*

 * Return the reason code for a reservations's companion DRP IE .

 */

static int uwb_rsv_companion_reason_code(struct uwb_rsv *rsv)

{

    static const int companion_reason_codes[] = {

        [UWB_RSV_STATE_O_MOVE_EXPANDING]     = UWB_DRP_REASON_ACCEPTED,

        [UWB_RSV_STATE_T_EXPANDING_ACCEPTED] = UWB_DRP_REASON_ACCEPTED,

        [UWB_RSV_STATE_T_EXPANDING_CONFLICT] = UWB_DRP_REASON_CONFLICT,

        [UWB_RSV_STATE_T_EXPANDING_PENDING]  = UWB_DRP_REASON_PENDING,

        [UWB_RSV_STATE_T_EXPANDING_DENIED]   = UWB_DRP_REASON_DENIED,

    };

​

    return companion_reason_codes[rsv->state];

}

​

/*

 * Return the status bit for a reservations's DRP IE.

 */

int uwb_rsv_status(struct uwb_rsv *rsv)

{

    static const int statuses[] = {

        [UWB_RSV_STATE_O_INITIATED]          = 0,

        [UWB_RSV_STATE_O_PENDING]            = 0,

        [UWB_RSV_STATE_O_MODIFIED]           = 1,

        [UWB_RSV_STATE_O_ESTABLISHED]        = 1,

        [UWB_RSV_STATE_O_TO_BE_MOVED]        = 0,

        [UWB_RSV_STATE_O_MOVE_COMBINING]     = 1,

        [UWB_RSV_STATE_O_MOVE_REDUCING]      = 1,

        [UWB_RSV_STATE_O_MOVE_EXPANDING]     = 1,

        [UWB_RSV_STATE_T_ACCEPTED]           = 1,

        [UWB_RSV_STATE_T_CONFLICT]           = 0,

        [UWB_RSV_STATE_T_PENDING]            = 0,

        [UWB_RSV_STATE_T_DENIED]             = 0,

        [UWB_RSV_STATE_T_RESIZED]            = 1,

        [UWB_RSV_STATE_T_EXPANDING_ACCEPTED] = 1,

        [UWB_RSV_STATE_T_EXPANDING_CONFLICT] = 1,

        [UWB_RSV_STATE_T_EXPANDING_PENDING]  = 1,