2017-06-14 08:49:27 +02:00
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/****************************************************************************
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* wireless/ieee802154/mac802154_rxenable.c
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*
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* Copyright (C) 2016 Sebastien Lorquet. All rights reserved.
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* Copyright (C) 2017 Gregory Nutt. All rights reserved.
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* Copyright (C) 2017 Verge Inc. All rights reserved.
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*
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* Author: Sebastien Lorquet <sebastien@lorquet.fr>
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* Author: Gregory Nutt <gnutt@nuttx.org>
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* Author: Anthony Merlino <anthony@vergeaero.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdlib.h>
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#include <assert.h>
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#include <errno.h>
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#include <debug.h>
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#include <string.h>
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#include "mac802154.h"
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2018-03-28 17:49:34 +02:00
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#include "mac802154_internal.h"
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2017-06-14 08:49:27 +02:00
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#include <nuttx/wireless/ieee802154/ieee802154_mac.h>
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/****************************************************************************
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2018-03-28 17:49:34 +02:00
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* Private Function Prototypes
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****************************************************************************/
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static void mac802154_rxenabletimeout(FAR void *arg);
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: mac802154_rxenabletimeout
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*
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* Description:
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* Function registered with MAC timer that gets called via the work queue to
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2019-02-27 15:41:08 +01:00
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* handle a timeout for extracting the Association Response from the
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* Coordinator.
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2018-03-28 17:49:34 +02:00
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*
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****************************************************************************/
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static void mac802154_rxenabletimeout(FAR void *arg)
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{
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2019-02-27 15:41:08 +01:00
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FAR struct ieee802154_privmac_s *priv =
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(FAR struct ieee802154_privmac_s *)arg;
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2018-03-28 17:49:34 +02:00
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2019-02-27 15:41:08 +01:00
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while (mac802154_lock(priv, true) != 0);
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2018-03-28 17:49:34 +02:00
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if (priv->curr_op != MAC802154_OP_RXENABLE)
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{
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mac802154_unlock(priv);
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return;
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}
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mac802154_rxdisable(priv);
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priv->curr_op = MAC802154_OP_NONE;
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mac802154_givesem(&priv->opsem);
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mac802154_unlock(priv)
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}
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/****************************************************************************
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* Public Functions
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2017-06-14 08:49:27 +02:00
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****************************************************************************/
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/****************************************************************************
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* Name: mac802154_req_rxenable
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*
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* Description:
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* The MLME-RX-ENABLE.request primitive allows the next higher layer to
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* request that the receiver is enable for a finite period of time.
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* Confirmation is returned via the
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* struct mac802154_maccb_s->conf_rxenable callback.
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*
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****************************************************************************/
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int mac802154_req_rxenable(MACHANDLE mac,
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FAR struct ieee802154_rxenable_req_s *req)
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{
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FAR struct ieee802154_privmac_s * priv =
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(FAR struct ieee802154_privmac_s *)mac;
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2018-03-28 17:49:34 +02:00
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int ret;
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/* If this is a Beacon-enabled network */
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if (priv->sfspec.sforder < 15)
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{
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return -EINVAL;
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goto errout_with_sem;
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}
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/* Non-beacon enabled network */
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else
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{
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if (req->rxon_dur > 0)
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{
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2019-02-27 15:41:08 +01:00
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/* Get exlusive access to the operation sempaphore. This must
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* happen before getting exclusive access to the MAC struct or
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* else there could be a lockup condition. This would occur if
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* another thread is using the cmdtrans but needs access to the
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* MAC in order to unlock it.
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2018-03-28 17:49:34 +02:00
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*/
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ret = mac802154_takesem(&priv->opsem, true);
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if (ret < 0)
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{
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return ret;
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}
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priv->curr_op = MAC802154_OP_RXENABLE;
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/* Get exclusive access to the MAC */
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ret = mac802154_lock(priv, true);
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if (ret < 0)
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{
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/* Should only fail if interrupted by a signal */
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wlwarn("WARNING: mac802154_takesem failed: %d\n", ret);
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mac802154_givesem(&priv->opsem);
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return ret;
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}
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mac802154_rxenable(priv);
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if (req->rxon_dur != 0xFFFFFFFF)
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{
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2019-02-27 15:41:08 +01:00
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mac802154_timerstart(priv, req->rxon_dur,
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mac802154_rxenabletimeout);
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2018-03-28 17:49:34 +02:00
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}
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}
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else
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{
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ret = mac802154_lock(priv, true);
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if (ret < 0)
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{
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/* Should only fail if interrupted by a signal */
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wlwarn("WARNING: mac802154_takesem failed: %d\n", ret);
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return ret;
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}
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if (priv->curr_op != MAC802154_OP_RXENABLE)
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{
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ret = -EINVAL;
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goto errout_with_sem;
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}
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mac802154_timercancel(priv);
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mac802154_rxdisable(priv);
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priv->curr_op = MAC802154_OP_NONE;
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mac802154_givesem(&priv->opsem);
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}
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}
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mac802154_unlock(priv)
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return OK;
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errout_with_sem:
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mac802154_unlock(priv)
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return ret;
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2019-02-27 15:41:08 +01:00
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}
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