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nuttx/wireless/ieee802154/mac802154_netdev.c

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/****************************************************************************
* wireless/ieee802154/mac802154_netdev.c
*
* Copyright (C) 2017 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <stdbool.h>
#include <time.h>
#include <string.h>
#include <errno.h>
#include <assert.h>
#include <debug.h>
#include <arpa/inet.h>
#include <nuttx/arch.h>
#include <nuttx/irq.h>
#include <nuttx/wdog.h>
#include <nuttx/wqueue.h>
#include <nuttx/net/iob.h>
#include <nuttx/net/arp.h>
#include <nuttx/net/netdev.h>
#include <nuttx/net/sixlowpan.h>
#include <nuttx/wireless/ieee80154_device.h>
#include <nuttx/wireless/ieee80154_mac.h>
#ifdef CONFIG_NET_6LOWPAN
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* If processing is not done at the interrupt level, then work queue support
* is required.
*/
#if !defined(CONFIG_SCHED_WORKQUEUE)
# error Work queue support is required in this configuration (CONFIG_SCHED_WORKQUEUE)
#else
/* Use the selected work queue */
# if defined(CONFIG_IEEE802154_NETDEV_HPWORK)
# define ETHWORK HPWORK
# elif defined(CONFIG_IEEE802154_NETDEV_LPWORK)
# define ETHWORK LPWORK
# else
# error Neither CONFIG_IEEE802154_NETDEV_HPWORK nor CONFIG_IEEE802154_NETDEV_LPWORK defined
# endif
#endif
/* CONFIG_IEEE802154_NETDEV_NINTERFACES determines the number of physical interfaces
* that will be supported.
*/
#ifndef CONFIG_IEEE802154_NETDEV_NINTERFACES
# define CONFIG_IEEE802154_NETDEV_NINTERFACES 1
#endif
/* TX poll delay = 1 seconds. CLK_TCK is the number of clock ticks per second */
#define skeleton_WDDELAY (1*CLK_TCK)
/* TX timeout = 1 minute */
#define skeleton_TXTIMEOUT (60*CLK_TCK)
/* This is a helper pointer for accessing the contents of the Ethernet header */
#define BUF ((struct eth_hdr_s *)priv->m8_dev.d_buf)
/****************************************************************************
* Private Types
****************************************************************************/
/* The mac802154_driver_s encapsulates all state information for a single hardware
* interface
*/
struct mac802154_driver_s
{
/* This holds the information visible to the NuttX network */
struct ieee802154_driver_s m8_dev; /* Interface understood by the network */
FAR struct ieee802154_mac_s *m8_mac; /* Contained MAC interface */
/* For internal use by this driver */
bool m8_bifup; /* true:ifup false:ifdown */
WDOG_ID m8_txpoll; /* TX poll timer */
WDOG_ID m8_txtimeout; /* TX timeout timer */
struct work_s m8_irqwork; /* For deferring interupt work to the work queue */
struct work_s m8_pollwork; /* For deferring poll work to the work queue */
};
/****************************************************************************
* Private Data
****************************************************************************/
/* A single packet buffer per device is used here. There might be multiple
* packet buffers in a more complex, pipelined design.
*/
static uint8_t g_pktbuf[MAX_NET_DEV_MTU + CONFIG_NET_GUARDSIZE];
/* Driver state structure */
static struct mac802154_driver_s g_skel[CONFIG_IEEE802154_NETDEV_NINTERFACES];
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/* IEE802.15.4 MAC callback functions ***************************************/
/* Asynchronous confirmations to requests */
static void mac802154_conf_data(FAR struct ieee802154_mac_s *mac,
FAR struct ieee802154_data_conf_s *conf);
static void mac802154_conf_purge(FAR struct ieee802154_mac_s *mac,
uint8_t handle, int status);
static void mac802154_conf_associate(FAR struct ieee802154_mac_s *mac,
uint16_t saddr, int status);
static void mac802154_conf_disassociate(FAR struct ieee802154_mac_s *mac,
static void mac802154_conf_get(FAR struct ieee802154_mac_s *mac, int status,
int attribute, FAR uint8_t *value, int valuelen);
static void mac802154_conf_gts(FAR struct ieee802154_mac_s *mac,
FAR uint8_t *characteristics, int status);
static void mac802154_conf_reset(FAR struct ieee802154_mac_s *mac,
int status);
static void mac802154_conf_rxenable(FAR struct ieee802154_mac_s *mac,
int status);
static void mac802154_conf_scan(FAR struct ieee802154_mac_s *mac,
int status, uint8_t type, uint32_t unscanned, int rsltsize,
FAR uint8_t *edlist, FAR uint8_t *pandescs);
static void mac802154_conf_set(FAR struct ieee802154_mac_s *mac, int status,
int attribute);
static void mac802154_conf_start(FAR struct ieee802154_mac_s *mac,
int status);
static void mac802154_conf_poll(FAR struct ieee802154_mac_s *mac,
int status);
/* Asynchronous event indications, replied to synchronously with responses */
static void mac802154_ind_data(FAR struct ieee802154_mac_s *mac,
FAR uint8_t *buf, int len);
static void mac802154_ind_associate(FAR struct ieee802154_mac_s *mac,
uint16_t clipanid, FAR uint8_t *clieaddr);
static void mac802154_ind_disassociate(FAR struct ieee802154_mac_s *mac,
FAR uint8_t *eadr, uint8_t reason);
static void mac802154_ind_beaconnotify(FAR struct ieee802154_mac_s *mac,
FAR uint8_t *bsn, FAR struct ieee802154_pan_desc_s *pandesc,
FAR uint8_t *sdu, int sdulen);
static void mac802154_ind_gts(FAR struct ieee802154_mac_s *mac,
FAR uint8_t *devaddr, FAR uint8_t *characteristics);
static void mac802154_ind_orphan(FAR struct ieee802154_mac_s *mac,
FAR uint8_t *orphanaddr);
static void mac802154_ind_commstatus(FAR struct ieee802154_mac_s *mac,
uint16_t panid, FAR uint8_t *src, FAR uint8_t *dst,
int status);
static void mac802154_ind_syncloss(FAR struct ieee802154_mac_s *mac,
int reason);
/* Network interface support ************************************************/
/* Common TX logic */
static int mac802154_transmit(FAR struct mac802154_driver_s *priv);
static int mac802154_txpoll(FAR struct net_driver_s *dev);
/* Frame transfer */
static void mac802154_receive(FAR struct mac802154_driver_s *priv);
static void mac802154_txdone(FAR struct mac802154_driver_s *priv);
static void mac802154_transfer_work(FAR void *arg);
static int mac802154_transfer(int irq, FAR void *context, FAR void *arg);
/* Watchdog timer expirations */
static void mac802154_txtimeout_work(FAR void *arg);
static void mac802154_txtimeout_expiry(int argc, wdparm_t arg, ...);
static void mac802154_poll_work(FAR void *arg);
static void mac802154_poll_expiry(int argc, wdparm_t arg, ...);
/* NuttX callback functions */
static int mac802154_ifup(FAR struct net_driver_s *dev);
static int mac802154_ifdown(FAR struct net_driver_s *dev);
static void mac802154_txavail_work(FAR void *arg);
static int mac802154_txavail(FAR struct net_driver_s *dev);
#if defined(CONFIG_NET_IGMP) || defined(CONFIG_NET_ICMPv6)
static int mac802154_addmac(FAR struct net_driver_s *dev, FAR const uint8_t *mac);
#ifdef CONFIG_NET_IGMP
static int mac802154_rmmac(FAR struct net_driver_s *dev, FAR const uint8_t *mac);
#endif
#ifdef CONFIG_NET_ICMPv6
static void mac802154_ipv6multicast(FAR struct mac802154_driver_s *priv);
#endif
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: mac802154_conf_data
*
* Description:
* Data frame was received by remote device
*
****************************************************************************/
static void mac802154_conf_data(FAR struct ieee802154_mac_s *mac,
FAR struct ieee802154_data_conf_s *conf)
{
}
/****************************************************************************
* Name: mac802154_conf_purge
*
* Description:
* Data frame was purged
*
****************************************************************************/
static void mac802154_conf_purge(FAR struct ieee802154_mac_s *mac,
uint8_t handle, int status)
{
}
/****************************************************************************
* Name: mac802154_conf_associate
*
* Description:
* Association request completed
*
****************************************************************************/
static void mac802154_conf_associate(FAR struct ieee802154_mac_s *mac,
uint16_t saddr, int status)
{
}
/****************************************************************************
* Name: mac802154_conf_disassociate
*
* Description:
* Disassociation request completed
*
****************************************************************************/
static void mac802154_conf_disassociate(FAR struct ieee802154_mac_s *mac,
{
}
/****************************************************************************
* Name: mac802154_conf_get
*
* Description:
* PIvoata returned
*
****************************************************************************/
static void mac802154_conf_get(FAR struct ieee802154_mac_s *mac, int status,
int attribute, FAR uint8_t *value,
int valuelen)
{
}
/****************************************************************************
* Name: mac802154_conf_gts
*
* Description:
* GTvoanagement completed
*
****************************************************************************/
static void mac802154_conf_gts(FAR struct ieee802154_mac_s *mac,
FAR uint8_t *characteristics, int status)
{
}
/****************************************************************************
* Name: mac802154_conf_reset
*
* Description:
* MAveset completed
*
****************************************************************************/
static void mac802154_conf_reset(FAR struct ieee802154_mac_s *mac,
int status)
{
}
/****************************************************************************
* Name: mac802154_conf_rxenable
*
* Description:
*
****************************************************************************/
static void mac802154_conf_rxenable(FAR struct ieee802154_mac_s *mac,
int status)
{
}
/****************************************************************************
* Name: mac802154_conf_scan
*
* Description:
*
****************************************************************************/
static void mac802154_conf_scan(FAR struct ieee802154_mac_s *mac,
int status, uint8_t type,
uint32_t unscanned, int rsltsize,
FAR uint8_t *edlist, FAR uint8_t *pandescs)
{
}
/****************************************************************************
* Name: mac802154_conf_set
*
* Description:
*
****************************************************************************/
static void mac802154_conf_set(FAR struct ieee802154_mac_s *mac, int status,
int attribute)
{
}
/****************************************************************************
* Name: mac802154_conf_start
*
* Description:
*
****************************************************************************/
static void mac802154_conf_start(FAR struct ieee802154_mac_s *mac,
int status)
{
}
/****************************************************************************
* Name: mac802154_conf_poll
*
* Description:
*
****************************************************************************/
static void mac802154_conf_poll(FAR struct ieee802154_mac_s *mac,
int status)
{
}
/****************************************************************************
* Name: mac802154_ind_data
*
* Description:
* Data frame received
*
****************************************************************************/
static void mac802154_ind_data(FAR struct ieee802154_mac_s *mac,
FAR uint8_t *buf, int len)
{
}
/****************************************************************************
* Name: mac802154_ind_associate
*
* Description:
* Association request received
*
****************************************************************************/
static void mac802154_ind_associate(FAR struct ieee802154_mac_s *mac,
uint16_t clipanid,
FAR uint8_t *clieaddr)
{
}
/****************************************************************************
* Name: mac802154_ind_disassociate
*
* Description:
* Disassociation request received
*
****************************************************************************/
static void mac802154_ind_disassociate(FAR struct ieee802154_mac_s *mac,
FAR uint8_t *eadr, uint8_t reason)
{
}
/****************************************************************************
* Name: mac802154_ind_beaconnotify
*
* Description:
* Beacon notification
*
****************************************************************************/
static void mac802154_ind_beaconnotify(FAR struct ieee802154_mac_s *mac,
FAR uint8_t *bsn,
FAR struct ieee802154_pan_desc_s *pandesc,
FAR uint8_t *sdu, int sdulen)
{
}
/****************************************************************************
* Name: mac802154_ind_gts
*
* Description:
* GTS management request received
*
****************************************************************************/
static void mac802154_ind_gts(FAR struct ieee802154_mac_s *mac,
FAR uint8_t *devaddr,
FAR uint8_t *characteristics)
{
}
/****************************************************************************
* Name: mac802154_ind_orphan
*
* Description:
* Orphan device detected
*
****************************************************************************/
static void mac802154_ind_orphan(FAR struct ieee802154_mac_s *mac,
FAR uint8_t *orphanaddr)
{
}
/****************************************************************************
* Name: mac802154_ind_commstatus
*
* Description:
*
****************************************************************************/
static void mac802154_ind_commstatus(FAR struct ieee802154_mac_s *mac,
uint16_t panid, FAR uint8_t *src,
FAR uint8_t *dst, int status)
{
}
/****************************************************************************
* Name: mac802154_ind_syncloss
*
* Description:
*
****************************************************************************/
static void mac802154_ind_syncloss(FAR struct ieee802154_mac_s *mac,
int reason)
{
}
/****************************************************************************
* Name: mac802154_transmit
*
* Description:
* Start hardware transmission. Called either from the txdone interrupt
* handling or from watchdog based polling.
*
* Parameters:
* priv - Reference to the driver state structure
*
* Returned Value:
* OK on success; a negated errno on failure
*
* Assumptions:
* May or may not be called from an interrupt handler. In either case,
* the network is locked.
*
****************************************************************************/
static int mac802154_transmit(FAR struct mac802154_driver_s *priv)
{
/* Verify that the hardware is ready to send another packet. If we get
* here, then we are committed to sending a packet; Higher level logic
* must have assured that there is no transmission in progress.
*/
/* Increment statistics */
NETDEV_TXPACKETS(priv->m8_dev);
/* Send the packet: address=priv->m8_dev.d_buf, length=priv->m8_dev.d_len */
/* Enable Tx interrupts */
/* Setup the TX timeout watchdog (perhaps restarting the timer) */
(void)wd_start(priv->m8_txtimeout, skeleton_TXTIMEOUT,
mac802154_txtimeout_expiry, 1, (wdparm_t)priv);
return OK;
}
/****************************************************************************
* Name: mac802154_txpoll
*
* Description:
* The transmitter is available, check if the network has any outgoing
* packets ready to send. This is a callback from devif_poll().
* devif_poll() may be called:
*
* 1. When the preceding TX packet send is complete,
* 2. When the preceding TX packet send timesout and the interface is reset
* 3. During normal TX polling
*
* Parameters:
* dev - Reference to the NuttX driver state structure
*
* Returned Value:
* OK on success; a negated errno on failure
*
* Assumptions:
* May or may not be called from an interrupt handler. In either case,
* the network is locked.
*
****************************************************************************/
static int mac802154_txpoll(FAR struct net_driver_s *dev)
{
FAR struct mac802154_driver_s *priv = (FAR struct mac802154_driver_s *)dev->d_private;
/* If the polling resulted in data that should be sent out, the field
* i_framelist will set to a new, outgoing list of frames.
*/
if (priv->m8_dev.i_framelist != NULL)
{
/* And send the packet */
mac802154_transmit(priv);
}
/* If zero is returned, the polling will continue until all connections have
* been examined.
*/
return 0;
}
/****************************************************************************
* Name: mac802154_receive
*
* Description:
* An interrupt was received indicating the availability of a new RX packet
*
* Parameters:
* priv - Reference to the driver state structure
*
* Returned Value:
* None
*
* Assumptions:
* The network is locked.
*
****************************************************************************/
static void mac802154_receive(FAR struct mac802154_driver_s *priv)
{
FAR struct iob_s *iob;
FAR struct iob_s *fptr;
/* Allocate an IOB to hold the frame */
net_lock();
iob = iob_alloc(false);
if (iob == NULL)
{
nerr("ERROR: Failed to allocate an IOB\n")
return;
}
/* Copy the frame data into the IOB.
* REVISIT: Can a copy be avoided?
*/
fptr = iob->io_data;
#warning Missing logic
/* Transfer the frame to the network logic */
priv->m8_dev.framelist = iob;
sixlowpan_input(&priv->m8_dev);
/* If the above function invocation resulted in data that should be sent
* out, the field i_framelist will set to a new, outgoing list of frames.
*/
if (priv->m8_dev.i_framelist != NULL)
{
/* And send the packet */
mac802154_transmit(priv);
}
}
/****************************************************************************
* Name: mac802154_txdone
*
* Description:
* An interrupt was received indicating that the last TX packet(s) is done
*
* Parameters:
* priv - Reference to the driver state structure
*
* Returned Value:
* None
*
* Assumptions:
* The network is locked.
*
****************************************************************************/
static void mac802154_txdone(FAR struct mac802154_driver_s *priv)
{
int delay;
/* Check for errors and update statistics */
NETDEV_TXDONE(priv->m8_dev);
/* Check if there are pending transmissions */
/* If no further transmissions are pending, then cancel the TX timeout and
* disable further Tx interrupts.
*/
wd_cancel(priv->m8_txtimeout);
/* And disable further TX interrupts. */
/* In any event, poll the network for new TX data */
(void)devif_poll(&priv->m8_dev, mac802154_txpoll);
}
/****************************************************************************
* Name: mac802154_transfer_work
*
* Description:
* Perform interrupt related work from the worker thread
*
* Parameters:
* arg - The argument passed when work_queue() was called.
*
* Returned Value:
* OK on success
*
* Assumptions:
* The network is locked.
*
****************************************************************************/
static void mac802154_transfer_work(FAR void *arg)
{
FAR struct mac802154_driver_s *priv = (FAR struct mac802154_driver_s *)arg;
/* Lock the network and serialize driver operations if necessary.
* NOTE: Serialization is only required in the case where the driver work
* is performed on an LP worker thread and where more than one LP worker
* thread has been configured.
*/
net_lock();
/* Process pending Ethernet interrupts */
/* Get and clear interrupt status bits */
/* Handle interrupts according to status bit settings */
/* Check if we received an incoming packet, if so, call mac802154_receive() */
mac802154_receive(priv);
/* Check if a packet transmission just completed. If so, call mac802154_txdone.
* This may disable further Tx interrupts if there are no pending
* transmissions.
*/
mac802154_txdone(priv);
net_unlock();
/* Re-enable Ethernet interrupts */
up_enable_irq(CONFIG_IEEE802154_NETDEV_IRQ);
}
/****************************************************************************
* Name: mac802154_transfer
*
* Description:
* Hardware interrupt handler
*
* Parameters:
* irq - Number of the IRQ that generated the interrupt
* context - Interrupt register state save info (architecture-specific)
*
* Returned Value:
* OK on success
*
* Assumptions:
*
****************************************************************************/
static int mac802154_transfer(int irq, FAR void *context, FAR void *arg)
{
FAR struct mac802154_driver_s *priv = &g_skel[0];
/* Disable further Ethernet interrupts. Because Ethernet interrupts are
* also disabled if the TX timeout event occurs, there can be no race
* condition here.
*/
up_disable_irq(CONFIG_IEEE802154_NETDEV_IRQ);
/* TODO: Determine if a TX transfer just completed */
{
/* If a TX transfer just completed, then cancel the TX timeout so
* there will be no race condition between any subsequent timeout
* expiration and the deferred interrupt processing.
*/
wd_cancel(priv->m8_txtimeout);
}
/* Schedule to perform the interrupt processing on the worker thread. */
work_queue(ETHWORK, &priv->m8_irqwork, mac802154_transfer_work, priv, 0);
return OK;
}
/****************************************************************************
* Name: mac802154_txtimeout_work
*
* Description:
* Perform TX timeout related work from the worker thread
*
* Parameters:
* arg - The argument passed when work_queue() as called.
*
* Returned Value:
* OK on success
*
* Assumptions:
* The network is locked.
*
****************************************************************************/
static void mac802154_txtimeout_work(FAR void *arg)
{
FAR struct mac802154_driver_s *priv = (FAR struct mac802154_driver_s *)arg;
/* Lock the network and serialize driver operations if necessary.
* NOTE: Serialization is only required in the case where the driver work
* is performed on an LP worker thread and where more than one LP worker
* thread has been configured.
*/
net_lock();
/* Increment statistics and dump debug info */
NETDEV_TXTIMEOUTS(priv->m8_dev);
/* Then reset the hardware */
/* Then poll the network for new XMIT data */
(void)devif_poll(&priv->m8_dev, mac802154_txpoll);
net_unlock();
}
/****************************************************************************
* Name: mac802154_txtimeout_expiry
*
* Description:
* Our TX watchdog timed out. Called from the timer interrupt handler.
* The last TX never completed. Reset the hardware and start again.
*
* Parameters:
* argc - The number of available arguments
* arg - The first argument
*
* Returned Value:
* None
*
* Assumptions:
* Global interrupts are disabled by the watchdog logic.
*
****************************************************************************/
static void mac802154_txtimeout_expiry(int argc, wdparm_t arg, ...)
{
FAR struct mac802154_driver_s *priv = (FAR struct mac802154_driver_s *)arg;
/* Disable further Ethernet interrupts. This will prevent some race
* conditions with interrupt work. There is still a potential race
* condition with interrupt work that is already queued and in progress.
*/
up_disable_irq(CONFIG_IEEE802154_NETDEV_IRQ);
/* Schedule to perform the TX timeout processing on the worker thread. */
work_queue(ETHWORK, &priv->m8_irqwork, mac802154_txtimeout_work, priv, 0);
}
/****************************************************************************
* Name: mac802154_poll_process
*
* Description:
* Perform the periodic poll. This may be called either from watchdog
* timer logic or from the worker thread, depending upon the configuration.
*
* Parameters:
* priv - Reference to the driver state structure
*
* Returned Value:
* None
*
* Assumptions:
*
****************************************************************************/
static inline void mac802154_poll_process(FAR struct mac802154_driver_s *priv)
{
}
/****************************************************************************
* Name: mac802154_poll_work
*
* Description:
* Perform periodic polling from the worker thread
*
* Parameters:
* arg - The argument passed when work_queue() as called.
*
* Returned Value:
* OK on success
*
* Assumptions:
* The network is locked.
*
****************************************************************************/
static void mac802154_poll_work(FAR void *arg)
{
FAR struct mac802154_driver_s *priv = (FAR struct mac802154_driver_s *)arg;
/* Lock the network and serialize driver operations if necessary.
* NOTE: Serialization is only required in the case where the driver work
* is performed on an LP worker thread and where more than one LP worker
* thread has been configured.
*/
net_lock();
/* Perform the poll */
/* Check if there is room in the send another TX packet. We cannot perform
* the TX poll if he are unable to accept another packet for transmission.
*/
/* If so, update TCP timing states and poll the network for new XMIT data.
* Hmmm.. might be bug here. Does this mean if there is a transmit in
* progress, we will missing TCP time state updates?
*/
(void)devif_timer(&priv->m8_dev, mac802154_txpoll);
/* Setup the watchdog poll timer again */
(void)wd_start(priv->m8_txpoll, skeleton_WDDELAY, mac802154_poll_expiry, 1,
(wdparm_t)priv);
net_unlock();
}
/****************************************************************************
* Name: mac802154_poll_expiry
*
* Description:
* Periodic timer handler. Called from the timer interrupt handler.
*
* Parameters:
* argc - The number of available arguments
* arg - The first argument
*
* Returned Value:
* None
*
* Assumptions:
* Global interrupts are disabled by the watchdog logic.
*
****************************************************************************/
static void mac802154_poll_expiry(int argc, wdparm_t arg, ...)
{
FAR struct mac802154_driver_s *priv = (FAR struct mac802154_driver_s *)arg;
/* Schedule to perform the interrupt processing on the worker thread. */
work_queue(ETHWORK, &priv->m8_pollwork, mac802154_poll_work, priv, 0);
}
/****************************************************************************
* Name: mac802154_ifup
*
* Description:
* NuttX Callback: Bring up the Ethernet interface when an IP address is
* provided
*
* Parameters:
* dev - Reference to the NuttX driver state structure
*
* Returned Value:
* None
*
* Assumptions:
*
****************************************************************************/
static int mac802154_ifup(FAR struct net_driver_s *dev)
{
FAR struct mac802154_driver_s *priv = (FAR struct mac802154_driver_s *)dev->d_private;
#ifdef CONFIG_NET_IPv4
ninfo("Bringing up: %d.%d.%d.%d\n",
dev->d_ipaddr & 0xff, (dev->d_ipaddr >> 8) & 0xff,
(dev->d_ipaddr >> 16) & 0xff, dev->d_ipaddr >> 24);
#endif
#ifdef CONFIG_NET_IPv6
ninfo("Bringing up: %04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
dev->d_ipv6addr[0], dev->d_ipv6addr[1], dev->d_ipv6addr[2],
dev->d_ipv6addr[3], dev->d_ipv6addr[4], dev->d_ipv6addr[5],
dev->d_ipv6addr[6], dev->d_ipv6addr[7]);
#endif
/* Initialize PHYs, the Ethernet interface, and setup up Ethernet interrupts */
/* Instantiate the MAC address from priv->m8_dev.d_mac.ether_addr_octet */
#ifdef CONFIG_NET_ICMPv6
/* Set up IPv6 multicast address filtering */
mac802154_ipv6multicast(priv);
#endif
/* Set and activate a timer process */
(void)wd_start(priv->m8_txpoll, skeleton_WDDELAY, mac802154_poll_expiry, 1,
(wdparm_t)priv);
/* Enable the Ethernet interrupt */
priv->m8_bifup = true;
up_enable_irq(CONFIG_IEEE802154_NETDEV_IRQ);
return OK;
}
/****************************************************************************
* Name: mac802154_ifdown
*
* Description:
* NuttX Callback: Stop the interface.
*
* Parameters:
* dev - Reference to the NuttX driver state structure
*
* Returned Value:
* None
*
* Assumptions:
*
****************************************************************************/
static int mac802154_ifdown(FAR struct net_driver_s *dev)
{
FAR struct mac802154_driver_s *priv = (FAR struct mac802154_driver_s *)dev->d_private;
irqstate_t flags;
/* Disable the Ethernet interrupt */
flags = enter_critical_section();
up_disable_irq(CONFIG_IEEE802154_NETDEV_IRQ);
/* Cancel the TX poll timer and TX timeout timers */
wd_cancel(priv->m8_txpoll);
wd_cancel(priv->m8_txtimeout);
/* Put the EMAC in its reset, non-operational state. This should be
* a known configuration that will guarantee the mac802154_ifup() always
* successfully brings the interface back up.
*/
/* Mark the device "down" */
priv->m8_bifup = false;
leave_critical_section(flags);
return OK;
}
/****************************************************************************
* Name: mac802154_txavail_work
*
* Description:
* Perform an out-of-cycle poll on the worker thread.
*
* Parameters:
* arg - Reference to the NuttX driver state structure (cast to void*)
*
* Returned Value:
* None
*
* Assumptions:
* Called on the higher priority worker thread.
*
****************************************************************************/
static void mac802154_txavail_work(FAR void *arg)
{
FAR struct mac802154_driver_s *priv = (FAR struct mac802154_driver_s *)arg;
/* Lock the network and serialize driver operations if necessary.
* NOTE: Serialization is only required in the case where the driver work
* is performed on an LP worker thread and where more than one LP worker
* thread has been configured.
*/
net_lock();
/* Ignore the notification if the interface is not yet up */
if (priv->m8_bifup)
{
/* Check if there is room in the hardware to hold another outgoing packet. */
/* If so, then poll the network for new XMIT data */
(void)devif_poll(&priv->m8_dev, mac802154_txpoll);
}
net_unlock();
}
/****************************************************************************
* Name: mac802154_txavail
*
* Description:
* Driver callback invoked when new TX data is available. This is a
* stimulus perform an out-of-cycle poll and, thereby, reduce the TX
* latency.
*
* Parameters:
* dev - Reference to the NuttX driver state structure
*
* Returned Value:
* None
*
* Assumptions:
* Called in normal user mode
*
****************************************************************************/
static int mac802154_txavail(FAR struct net_driver_s *dev)
{
FAR struct mac802154_driver_s *priv = (FAR struct mac802154_driver_s *)dev->d_private;
/* Is our single work structure available? It may not be if there are
* pending interrupt actions and we will have to ignore the Tx
* availability action.
*/
if (work_available(&priv->m8_pollwork))
{
/* Schedule to serialize the poll on the worker thread. */
work_queue(ETHWORK, &priv->m8_pollwork, mac802154_txavail_work, priv, 0);
}
return OK;
}
/****************************************************************************
* Name: mac802154_addmac
*
* Description:
* NuttX Callback: Add the specified MAC address to the hardware multicast
* address filtering
*
* Parameters:
* dev - Reference to the NuttX driver state structure
* mac - The MAC address to be added
*
* Returned Value:
* None
*
* Assumptions:
*
****************************************************************************/
#if defined(CONFIG_NET_IGMP) || defined(CONFIG_NET_ICMPv6)
static int mac802154_addmac(FAR struct net_driver_s *dev, FAR const uint8_t *mac)
{
FAR struct mac802154_driver_s *priv = (FAR struct mac802154_driver_s *)dev->d_private;
/* Add the MAC address to the hardware multicast routing table */
return OK;
}
#endif
/****************************************************************************
* Name: mac802154_rmmac
*
* Description:
* NuttX Callback: Remove the specified MAC address from the hardware multicast
* address filtering
*
* Parameters:
* dev - Reference to the NuttX driver state structure
* mac - The MAC address to be removed
*
* Returned Value:
* None
*
* Assumptions:
*
****************************************************************************/
#ifdef CONFIG_NET_IGMP
static int mac802154_rmmac(FAR struct net_driver_s *dev, FAR const uint8_t *mac)
{
FAR struct mac802154_driver_s *priv = (FAR struct mac802154_driver_s *)dev->d_private;
/* Add the MAC address to the hardware multicast routing table */
return OK;
}
#endif
/****************************************************************************
* Name: mac802154_ipv6multicast
*
* Description:
* Configure the IPv6 multicast MAC address.
*
* Parameters:
* priv - A reference to the private driver state structure
*
* Returned Value:
* OK on success; Negated errno on failure.
*
* Assumptions:
*
****************************************************************************/
#ifdef CONFIG_NET_ICMPv6
static void mac802154_ipv6multicast(FAR struct mac802154_driver_s *priv)
{
FAR struct net_driver_s *dev;
uint16_t tmp16;
uint8_t mac[6];
/* For ICMPv6, we need to add the IPv6 multicast address
*
* For IPv6 multicast addresses, the Ethernet MAC is derived by
* the four low-order octets OR'ed with the MAC 33:33:00:00:00:00,
* so for example the IPv6 address FF02:DEAD:BEEF::1:3 would map
* to the Ethernet MAC address 33:33:00:01:00:03.
*
* NOTES: This appears correct for the ICMPv6 Router Solicitation
* Message, but the ICMPv6 Neighbor Solicitation message seems to
* use 33:33:ff:01:00:03.
*/
mac[0] = 0x33;
mac[1] = 0x33;
dev = &priv->dev;
tmp16 = dev->d_ipv6addr[6];
mac[2] = 0xff;
mac[3] = tmp16 >> 8;
tmp16 = dev->d_ipv6addr[7];
mac[4] = tmp16 & 0xff;
mac[5] = tmp16 >> 8;
ninfo("IPv6 Multicast: %02x:%02x:%02x:%02x:%02x:%02x\n",
mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
(void)mac802154_addmac(dev, mac);
#ifdef CONFIG_NET_ICMPv6_AUTOCONF
/* Add the IPv6 all link-local nodes Ethernet address. This is the
* address that we expect to receive ICMPv6 Router Advertisement
* packets.
*/
(void)mac802154_addmac(dev, g_ipv6_ethallnodes.ether_addr_octet);
#endif /* CONFIG_NET_ICMPv6_AUTOCONF */
#ifdef CONFIG_NET_ICMPv6_ROUTER
/* Add the IPv6 all link-local routers Ethernet address. This is the
* address that we expect to receive ICMPv6 Router Solicitation
* packets.
*/
(void)mac802154_addmac(dev, g_ipv6_ethallrouters.ether_addr_octet);
#endif /* CONFIG_NET_ICMPv6_ROUTER */
}
#endif /* CONFIG_NET_ICMPv6 */
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: mac802154netdev_register
*
* Description:
* Register a network driver to access the IEEE 802.15.4 MAC layer from
* a socket using 6loWPAN
*
* Input Parameters:
* mac - Pointer to the mac layer struct to be registered.
*
* Returned Values:
* Zero (OK) is returned on success. Otherwise a negated errno value is
* returned to indicate the nature of the failure.
*
****************************************************************************/
int mac802154netdev_register(FAR struct ieee802154_mac_s *mac);
{
FAR struct mac802154_driver_s *priv;
FAR truct ieee802154_maccb_s *macb;
FAR struct net_driver_s *dev;
FAR uint8_t *pktbuf;
DEBUGASSERT(radio != NULL);
/* Get the interface structure associated with this interface number. */
priv = (FAR struct mac802154_driver_s *)
kmm_zalloc(sizeof(struct mac802154_driver_s));
if (priv == NULL)
{
nerr("ERROR: Failed to allocate the device structure\n");
return -ENOMEM;
}
/* Allocate a packet buffer (not used by this driver, but need by the
* upper networking layer)
*/
pktbuf = (FAR uint8_t *)kmm_malloc(CONFIG_NET_6LOWPAN_MTU + CONFIG_NET_GUARDSIZE);
if (pktbuf == NULL
{
nerr("ERROR: Failed to allocate the packet buffer\n");
kmm_free(priv);
return -ENOMEM;
}
/* Initialize the driver structure */
dev = &ieee->m8_dev.i_dev;
dev->d_buf = pktbuf; /* Single packet buffer */
dev->d_ifup = mac802154_ifup; /* I/F up (new IP address) callback */
dev->d_ifdown = mac802154_ifdown; /* I/F down callback */
dev->d_txavail = mac802154_txavail; /* New TX data callback */
#ifdef CONFIG_NET_IGMP
dev->d_addmac = mac802154_addmac; /* Add multicast MAC address */
dev->d_rmmac = mac802154_rmmac; /* Remove multicast MAC address */
#endif
dev->d_private = (FAR void *)priv; /* Used to recover private state from dev */
/* Create a watchdog for timing polling for and timing of transmisstions */
priv->m8_mac = mac; /* Save the MAC interface instance */
priv->m8_txpoll = wd_create(); /* Create periodic poll timer */
priv->m8_txtimeout = wd_create(); /* Create TX timeout timer */
DEBUGASSERT(priv->m8_txpoll != NULL && priv->m8_txtimeout != NULL);
/* Initialize the MAC callbacks */
maccb = &mac->cbs;
maccb->cb_context = priv;
maccb->conf_data = mac802154_conf_data;
maccb->conf_purge = mac802154_conf_purge;
maccb->conf_associate = mac802154_conf_associate;
maccb->conf_disassociate = mac802154_conf_disassociate;
maccb->conf_get = mac802154_conf_get;
maccb->conf_gts = mac802154_conf_gts;
maccb->conf_reset = mac802154_conf_reset;
maccb->conf_rxenable = mac802154_conf_rxenable;
maccb->conf_scan = mac802154_conf_scan;
maccb->conf_set = mac802154_conf_set;
maccb->conf_start = mac802154_conf_start;
maccb->conf_poll = mac802154_conf_poll;
maccb->ind_data = mac802154_ind_data;
maccb->ind_associate = mac802154_ind_associate;
maccb->ind_disassociate = mac802154_ind_disassociate;
maccb->ind_beaconnotify = mac802154_ind_beaconnotify;
maccb->ind_gts = mac802154_ind_gts;
maccb->ind_orphan = mac802154_ind_orphan;
maccb->ind_commstatus = mac802154_ind_commstatus;
maccb->ind_syncloss = mac802154_ind_syncloss;
/* Put the interface in the down state. */
mac802154_ifdown(dev);
/* Register the device with the OS so that socket IOCTLs can be performed */
(void)netdev_register(&priv->m8_dev, NET_LL_IEEE802154);
return OK;
}
#endif /* CONFIG_NET && CONFIG_NET_skeleton */
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