410 lines
13 KiB
C
410 lines
13 KiB
C
/****************************************************************************
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* apps/wireless/ieee802154/i8sak/i8sak_events.c
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* IEEE 802.15.4 Swiss Army Knife
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*
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* Copyright (C) 2017 Verge Inc. All rights reserved.
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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 <sys/ioctl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <net/if.h>
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#include <nuttx/fs/ioctl.h>
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#include <nuttx/wireless/ieee802154/ieee802154_mac.h>
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#include "wireless/ieee802154.h"
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#include "i8sak.h"
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#include "i8sak_events.h"
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name : i8sak_eventthread
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*
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* Description :
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* Listen for events from the MAC layer
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****************************************************************************/
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static pthread_addr_t i8sak_eventthread(pthread_addr_t arg)
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{
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FAR struct i8sak_s *i8sak = (FAR struct i8sak_s *)arg;
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union ieee802154_macarg_u macarg;
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#ifdef CONFIG_NET_6LOWPAN
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struct ieee802154_netmac_s netarg;
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#endif
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FAR struct i8sak_eventreceiver_s *receiver;
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FAR struct ieee802154_primitive_s *primitive = NULL;
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int ret = OK;
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if (i8sak->mode == I8SAK_MODE_CHAR)
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{
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macarg.enable = true;
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ioctl(i8sak->fd, MAC802154IOC_ENABLE_EVENTS,
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(unsigned long)((uintptr_t)&macarg));
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}
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#ifdef CONFIG_NET_6LOWPAN
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else if (i8sak->mode == I8SAK_MODE_NETIF)
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{
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netarg.u.enable = true;
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strncpy(netarg.ifr_name, i8sak->ifname, IFNAMSIZ);
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ioctl(i8sak->fd, MAC802154IOC_ENABLE_EVENTS,
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(unsigned long)((uintptr_t)&netarg));
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}
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#endif
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while (i8sak->eventlistener_run)
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{
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if (i8sak->mode == I8SAK_MODE_CHAR)
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{
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ret = ioctl(i8sak->fd, MAC802154IOC_GET_EVENT,
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(unsigned long)((uintptr_t)&macarg));
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primitive = &macarg.primitive;
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}
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#ifdef CONFIG_NET_6LOWPAN
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else if (i8sak->mode == I8SAK_MODE_NETIF)
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{
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ret = ioctl(i8sak->fd, MAC802154IOC_GET_EVENT,
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(unsigned long)((uintptr_t)&netarg));
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primitive = &netarg.u.primitive;
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}
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#endif
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if (ret != OK)
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{
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i8sak->eventlistener_run = false;
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continue;
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}
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ret = sem_wait(&i8sak->eventsem);
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if (ret != OK)
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{
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i8sak->eventlistener_run = false;
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continue;
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}
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/* Loop through event receivers and call callbacks for those receivers
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* listening for this event type.
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*/
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receiver = (FAR struct i8sak_eventreceiver_s *)sq_peek(
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&i8sak->eventreceivers);
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while (receiver != NULL)
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{
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if ((primitive->type == IEEE802154_PRIMITIVE_CONF_DATA &&
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receiver->filter.confevents.data) ||
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(primitive->type == IEEE802154_PRIMITIVE_CONF_ASSOC &&
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receiver->filter.confevents.assoc) ||
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(primitive->type == IEEE802154_PRIMITIVE_CONF_DISASSOC &&
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receiver->filter.confevents.disassoc) ||
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(primitive->type == IEEE802154_PRIMITIVE_CONF_GTS &&
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receiver->filter.confevents.gts) ||
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(primitive->type == IEEE802154_PRIMITIVE_CONF_RESET &&
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receiver->filter.confevents.reset) ||
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(primitive->type == IEEE802154_PRIMITIVE_CONF_RXENABLE &&
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receiver->filter.confevents.rxenable) ||
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(primitive->type == IEEE802154_PRIMITIVE_CONF_SCAN &&
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receiver->filter.confevents.scan) ||
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(primitive->type == IEEE802154_PRIMITIVE_CONF_START &&
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receiver->filter.confevents.start) ||
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(primitive->type == IEEE802154_PRIMITIVE_CONF_POLL &&
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receiver->filter.confevents.poll) ||
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(primitive->type == IEEE802154_PRIMITIVE_IND_ASSOC &&
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receiver->filter.indevents.assoc) ||
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(primitive->type == IEEE802154_PRIMITIVE_IND_DISASSOC &&
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receiver->filter.indevents.disassoc) ||
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(primitive->type == IEEE802154_PRIMITIVE_IND_BEACONNOTIFY &&
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receiver->filter.indevents.beacon) ||
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(primitive->type == IEEE802154_PRIMITIVE_IND_GTS &&
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receiver->filter.indevents.gts) ||
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(primitive->type == IEEE802154_PRIMITIVE_IND_ORPHAN &&
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receiver->filter.indevents.orphan) ||
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(primitive->type == IEEE802154_PRIMITIVE_IND_COMMSTATUS &&
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receiver->filter.indevents.commstatus) ||
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(primitive->type == IEEE802154_PRIMITIVE_IND_SYNCLOSS &&
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receiver->filter.indevents.syncloss))
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{
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receiver->cb(primitive, receiver->arg);
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if (receiver->oneshot)
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{
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/* Unlink the receiver from the list */
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sq_rem((FAR sq_entry_t *)receiver, &i8sak->eventreceivers);
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/* Link the receiver back into the free list */
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sq_addlast((FAR sq_entry_t *)receiver, &i8sak->eventreceivers_free);
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}
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}
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receiver = (FAR struct i8sak_eventreceiver_s *)sq_next(
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(FAR sq_entry_t *)receiver);
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}
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sem_post(&i8sak->eventsem);
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}
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if (i8sak->mode == I8SAK_MODE_CHAR)
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{
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macarg.enable = false;
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ioctl(i8sak->fd, MAC802154IOC_ENABLE_EVENTS,
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(unsigned long)((uintptr_t)&macarg));
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}
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#ifdef CONFIG_NET_6LOWPAN
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else if (i8sak->mode == I8SAK_MODE_NETIF)
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{
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netarg.u.enable = false;
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strncpy(netarg.ifr_name, i8sak->ifname, IFNAMSIZ);
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ioctl(i8sak->fd, MAC802154IOC_ENABLE_EVENTS,
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(unsigned long)((uintptr_t)&netarg));
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}
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#endif
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return NULL;
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: i8sak_eventlistener_start
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*
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* Description:
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* Starts internal threads to listen for events.
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*
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* Parameters:
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* i8sak - handle to the i8sak instance struct
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*
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* Returned Value:
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* OK on success; a negated errno on failure
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*
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* Assumptions:
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*
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****************************************************************************/
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int i8sak_eventlistener_start(FAR struct i8sak_s *i8sak)
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{
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int ret;
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i8sak->eventlistener_run = true;
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ret = pthread_create(&i8sak->eventlistener_threadid, NULL, i8sak_eventthread,
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(void *)i8sak);
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if (ret != 0)
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{
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fprintf(stderr, "failed to start event thread: %d\n", ret);
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return ret;
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}
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return OK;
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}
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/****************************************************************************
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* Name: i8sak_eventlistener_stop
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*
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* Description:
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* Stops event thread.
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*
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* Parameters:
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* handle - handle to the i8sak instance struct
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*
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* Returned Value:
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* OK on success; a negated errno on failure
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*
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* Assumptions:
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*
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****************************************************************************/
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int i8sak_eventlistener_stop(FAR struct i8sak_s *i8sak)
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{
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int ret;
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FAR void *value;
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i8sak->eventlistener_run = false;
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pthread_kill(i8sak->eventlistener_threadid, 2);
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ret = pthread_join(i8sak->eventlistener_threadid, &value);
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if (ret != OK)
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{
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fprintf(stderr, "ERROR: pthread_join() failed: %d\n", ret);
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}
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return ret;
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}
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/****************************************************************************
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* Name: i8sak_eventlistener_addreceiver
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*
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* Description:
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* Add an event receiver. An event receiver consists of a callback and flags
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* for which events should be sent to the callback.
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*
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* Parameters:
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* handle - handle to the i8sak instance struct
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* cb - callback to be called on reception of notification event from
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* MAC layer that matches one of the masked events
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* filter - struct containing event mask bits to indicate whether event
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* type should trigger callback
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* arg - user specified argument to send to the callback
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* oneshot - whether the receiver is automatically unregistered after the
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* first notification
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*
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* Returned Value:
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* OK if successful; a negated errno on failure
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*
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* Assumptions:
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*
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****************************************************************************/
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int i8sak_eventlistener_addreceiver(FAR struct i8sak_s *i8sak,
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i8sak_eventcallback_t cb,
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FAR struct i8sak_eventfilter_s *filter,
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bool oneshot)
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{
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FAR struct i8sak_eventreceiver_s *receiver;
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int ret;
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ret = sem_wait(&i8sak->eventsem);
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if (ret != OK)
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{
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fprintf(stderr, "failed to get exclusive access: %d\n", ret);
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return ret;
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}
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/* Allocate a receiver struct from the static pool */
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receiver = (FAR struct i8sak_eventreceiver_s *)sq_remfirst(
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&i8sak->eventreceivers_free);
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if (receiver == NULL)
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{
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fprintf(stderr, "failed to add receiver: %d\n", ENOMEM);
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sem_post(&i8sak->eventsem);
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return -ENOMEM;
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}
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receiver->cb = cb;
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memcpy(&receiver->filter, filter, sizeof(struct i8sak_eventfilter_s));
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receiver->arg = i8sak;
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receiver->oneshot = oneshot;
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/* Link the receiver into the list */
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sq_addlast((FAR sq_entry_t *)receiver, &i8sak->eventreceivers);
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sem_post(&i8sak->eventsem);
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return OK;
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}
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/****************************************************************************
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* Name: i8sak_eventlistener_removereceiver
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*
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* Description:
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* Removes a event receiver. Listener will no longer call callback. This
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* function finds the first event receiver with the provided callback.
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*
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* Parameters:
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* handle - handle to the i8sak instance struct
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* cb - callback function to search for.
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*
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* Returned Value:
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* OK on success; a negated errno on failure
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*
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* Assumptions:
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*
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****************************************************************************/
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int i8sak_eventlistener_removereceiver(FAR struct i8sak_s *i8sak,
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i8sak_eventcallback_t cb)
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{
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FAR struct i8sak_eventreceiver_s *receiver;
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int ret;
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ret = sem_wait(&i8sak->eventsem);
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if (ret != OK)
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{
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fprintf(stderr, "failed to get exclusive access: %d\n", ret);
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return ret;
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}
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/* Search through frame receivers until either we match the callback, or
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* there is no more receivers to check.
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*/
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receiver = (FAR struct i8sak_eventreceiver_s *)sq_peek(
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&i8sak->eventreceivers);
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while (receiver != NULL)
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{
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/* Check if callback matches */
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if (receiver->cb == cb)
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{
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/* Unlink the receiver from the list */
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sq_rem((FAR sq_entry_t *)receiver, &i8sak->eventreceivers);
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/* Link the receiver back into the free list */
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sq_addlast((FAR sq_entry_t *)receiver, &i8sak->eventreceivers_free);
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sem_post(&i8sak->eventsem);
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return OK;
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}
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receiver = (FAR struct i8sak_eventreceiver_s *)sq_next(
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(FAR sq_entry_t *)receiver);
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}
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sem_post(&i8sak->eventsem);
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fprintf(stderr, "failed to remove receiver");
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return ERROR;
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}
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