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- /****************************************************************************
- * wireless/ieee802154/mac802154_netdev.c
- *
- * Copyright (C) 2017-2018 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/kmalloc.h>
- #include <nuttx/signal.h>
- #include <nuttx/wdog.h>
- #include <nuttx/wqueue.h>
- #include <nuttx/mm/iob.h>
- #include <nuttx/net/arp.h>
- #include <nuttx/net/netdev.h>
- #include <nuttx/net/radiodev.h>
- #include <nuttx/net/ieee802154.h>
- #include <nuttx/net/sixlowpan.h>
- #include <nuttx/wireless/ieee802154/ieee802154_mac.h>
- #include "mac802154.h"
- #if defined(CONFIG_NET_6LOWPAN) || defined(CONFIG_NET_IEEE802154)
- /****************************************************************************
- * 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)
- #endif
- /* The low priority work queue is preferred. If it is not enabled, LPWORK
- * will be the same as HPWORK.
- *
- * NOTE: However, the network should NEVER run on the high priority work
- * queue! That queue is intended only to service short back end interrupt
- * processing that never suspends. Suspending the high priority work queue
- * may bring the system to its knees!
- */
- #define WPANWORK LPWORK
- /* 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
- /* Preferred address size */
- #ifdef CONFIG_NET_6LOWPAN_EXTENDEDADDR
- # define MACNET_ADDRSIZE IEEE802154_EADDRSIZE
- #else
- # define MACNET_ADDRSIZE IEEE802154_SADDRSIZE
- #endif
- /* Frame size */
- #if defined(CONFIG_NET_IEEE802154_FRAMELEN)
- # define MACNET_FRAMELEN CONFIG_NET_IEEE802154_FRAMELEN
- #else
- # define MACNET_FRAMELEN IEEE802154_MAX_PHY_PACKET_SIZE
- #endif
- #if (CONFIG_MAC802154_NTXDESC < CONFIG_IOB_NBUFFERS)
- # warning "CONFIG_MAC802154_NTXDESC should probably be equal to" \
- "CONFIG_IOB_NBUFFERS to avoid waiting on req_data"
- #endif
- /* TX poll delay = 1 seconds. CLK_TCK is the number of clock ticks per second */
- #define TXPOLL_WDDELAY (1*CLK_TCK)
- /****************************************************************************
- * Private Types
- ****************************************************************************/
- /* This is our private version of the MAC callback structure */
- struct macnet_callback_s
- {
- /* This holds the information visible to the MAC layer */
- struct mac802154_maccb_s mc_cb; /* Interface understood by the MAC layer */
- FAR struct macnet_driver_s *mc_priv; /* Our priv data */
- };
- /* The macnet_driver_s encapsulates all state information for a single
- * IEEE802.15.4 MAC interface.
- */
- struct macnet_driver_s
- {
- /* This holds the information visible to the NuttX network */
- struct radio_driver_s md_dev; /* Interface understood by the network */
- /* Cast compatible with struct macnet_driver_s */
- /* For internal use by this driver */
- sem_t md_exclsem; /* Exclusive access to struct */
- struct macnet_callback_s md_cb; /* Callback information */
- MACHANDLE md_mac; /* Contained MAC interface */
- bool md_bifup; /* true:ifup false:ifdown */
- WDOG_ID md_txpoll; /* TX poll timer */
- struct work_s md_pollwork; /* Defer poll work to the work queue */
- /* Hold a list of events */
- bool md_enableevents : 1; /* Are events enabled? */
- bool md_eventpending : 1; /* Is there a get event using the semaphore? */
- sem_t md_eventsem; /* Signaling semaphore for waiting get event */
- sq_queue_t primitive_queue; /* For holding primitives to pass along */
- /* MAC Service notification information */
- bool md_notify_registered;
- pid_t md_notify_pid;
- struct sigevent md_notify_event;
- struct sigwork_s md_notify_work;
- #ifdef CONFIG_NET_6LOWPAN
- struct sixlowpan_reassbuf_s md_iobuffer;
- #endif
- };
- /****************************************************************************
- * Private Function Prototypes
- ****************************************************************************/
- /* Utility functions ********************************************************/
- static int macnet_update_nvaddr(FAR struct net_driver_s *dev);
- static inline void macnet_netmask(FAR struct net_driver_s *dev);
- /* IEE802.15.4 MAC callback functions ***************************************/
- static int macnet_notify(FAR struct mac802154_maccb_s *maccb,
- FAR struct ieee802154_primitive_s *primitive);
- static int macnet_rxframe(FAR struct macnet_driver_s *maccb,
- FAR struct ieee802154_data_ind_s *ind);
- /* Network interface support ************************************************/
- /* Common TX logic */
- static int macnet_txpoll_callback(FAR struct net_driver_s *dev);
- static void macnet_txpoll_work(FAR void *arg);
- static void macnet_txpoll_expiry(int argc, wdparm_t arg, ...);
- /* IOCTL support */
- #ifdef CONFIG_NET_STARPOINT
- #ifdef CONFIG_NET_6LOWPAN_EXTENDEDADDR
- static int macnet_coord_eaddr(FAR struct radio_driver_s *radio,
- FAR uint8_t *eaddr);
- #else
- static int macnet_coord_saddr(FAR struct radio_driver_s *radio,
- FAR uint8_t *saddr);
- #endif
- #endif
- /* NuttX callback functions */
- static int macnet_ifup(FAR struct net_driver_s *dev);
- static int macnet_ifdown(FAR struct net_driver_s *dev);
- static void macnet_txavail_work(FAR void *arg);
- static int macnet_txavail(FAR struct net_driver_s *dev);
- #ifdef CONFIG_NET_MCASTGROUP
- static int macnet_addmac(FAR struct net_driver_s *dev,
- FAR const uint8_t *mac);
- static int macnet_rmmac(FAR struct net_driver_s *dev,
- FAR const uint8_t *mac);
- #endif
- #ifdef CONFIG_NETDEV_IOCTL
- static int macnet_ioctl(FAR struct net_driver_s *dev, int cmd,
- unsigned long arg);
- #endif
- static int macnet_get_mhrlen(FAR struct radio_driver_s *netdev,
- FAR const void *meta);
- static int macnet_req_data(FAR struct radio_driver_s *netdev,
- FAR const void *meta, FAR struct iob_s *framelist);
- static int macnet_properties(FAR struct radio_driver_s *netdev,
- FAR struct radiodev_properties_s *properties);
- /****************************************************************************
- * Private Data
- ****************************************************************************/
- /****************************************************************************
- * Private Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: macnet_update_nvaddr
- *
- * Description:
- * Advertise the MAC and IPv6 address for this node.
- *
- *
- ****************************************************************************/
- static int macnet_update_nvaddr(FAR struct net_driver_s *dev)
- {
- FAR struct macnet_driver_s *priv;
- union ieee802154_macarg_u arg;
- int ret;
- DEBUGASSERT(dev != NULL && dev->d_private != NULL);
- priv = (FAR struct macnet_driver_s *)dev->d_private;
- #ifdef CONFIG_NET_6LOWPAN_EXTENDEDADDR
- /* Get the eaddr from the MAC */
- arg.getreq.attr = IEEE802154_ATTR_MAC_EADDR;
- ret = mac802154_ioctl(priv->md_mac, MAC802154IOC_MLME_GET_REQUEST,
- (unsigned long)((uintptr_t)&arg));
- if (ret < 0)
- {
- wlerr("ERROR: MAC802154IOC_MLME_GET_REQUEST failed: %d\n", ret);
- return ret;
- }
- else
- {
- IEEE802154_EADDRCOPY(dev->d_mac.radio.nv_addr, arg.getreq.attrval.mac.eaddr);
- dev->d_mac.radio.nv_addrlen = IEEE802154_EADDRSIZE;
- return OK;
- }
- #else
- uint8_t *saddr;
- /* Get the saddr from the MAC */
- arg.getreq.attr = IEEE802154_ATTR_MAC_SADDR;
- ret = mac802154_ioctl(priv->md_mac, MAC802154IOC_MLME_GET_REQUEST,
- (unsigned long)((uintptr_t)&arg));
- if (ret < 0)
- {
- wlerr("ERROR: MAC802154IOC_MLME_GET_REQUEST failed: %d\n", ret);
- return ret;
- }
- else
- {
- /* Set the MAC address as the saddr */
- saddr = arg.getreq.attrval.mac.saddr;
- /* Network layers expect address in Network Order (Big Endian) */
- dev->d_mac.radio.nv_addr[0] = saddr[1];
- dev->d_mac.radio.nv_addr[1] = saddr[0];
- dev->d_mac.radio.nv_addrlen = IEEE802154_SADDRSIZE;
- return OK;
- }
- #endif
- }
- /****************************************************************************
- * Name: macnet_netmask
- *
- * Description:
- * Create a netmask of a MAC-based IP address which may be based on either
- * the IEEE 802.15.14 short or extended address of the MAC.
- *
- * 128 112 96 80 64 48 32 16
- * ---- ---- ---- ---- ---- ---- ---- ----
- * fe80 0000 0000 0000 0000 00ff fe00 xxxx 2-byte short address IEEE 48-bit MAC
- * fe80 0000 0000 0000 xxxx xxxx xxxx xxxx 8-byte extended address IEEE EUI-64
- *
- ****************************************************************************/
- static inline void macnet_netmask(FAR struct net_driver_s *dev)
- {
- dev->d_ipv6netmask[0] = 0xffff;
- dev->d_ipv6netmask[1] = 0xffff;
- dev->d_ipv6netmask[2] = 0xffff;
- dev->d_ipv6netmask[3] = 0xffff;
- #ifdef CONFIG_NET_6LOWPAN_EXTENDEDADDR
- dev->d_ipv6netmask[4] = 0;
- dev->d_ipv6netmask[5] = 0;
- dev->d_ipv6netmask[6] = 0;
- dev->d_ipv6netmask[7] = 0;
- #else
- dev->d_ipv6netmask[4] = 0xffff;
- dev->d_ipv6netmask[5] = 0xffff;
- dev->d_ipv6netmask[6] = 0xffff;
- dev->d_ipv6netmask[7] = 0;
- #endif
- }
- /****************************************************************************
- * Name: macnet_notify
- *
- * Description:
- *
- ****************************************************************************/
- static int macnet_notify(FAR struct mac802154_maccb_s *maccb,
- FAR struct ieee802154_primitive_s *primitive)
- {
- FAR struct macnet_callback_s *cb =
- (FAR struct macnet_callback_s *)maccb;
- FAR struct macnet_driver_s *priv;
- DEBUGASSERT(cb != NULL && cb->mc_priv != NULL);
- priv = cb->mc_priv;
- /* Handle the special case for data indications or "incoming frames" */
- if (primitive->type == IEEE802154_PRIMITIVE_IND_DATA)
- {
- return macnet_rxframe(priv, &primitive->u.dataind);
- }
- /* If there is a registered notification receiver, queue the event and signal
- * the receiver. Events should be popped from the queue from the application
- * at a reasonable rate in order for the MAC layer to be able to allocate new
- * notifications.
- */
- if (priv->md_enableevents)
- {
- /* Get exclusive access to the driver structure. We don't care about any
- * signals so if we see one, just go back to trying to get access again
- */
- while (nxsem_wait(&priv->md_exclsem) < 0);
- sq_addlast((FAR sq_entry_t *)primitive, &priv->primitive_queue);
- /* Check if there is a read waiting for data */
- if (priv->md_eventpending)
- {
- /* Wake the thread waiting for the data transmission */
- priv->md_eventpending = false;
- nxsem_post(&priv->md_eventsem);
- }
- if (priv->md_notify_registered)
- {
- priv->md_notify_event.sigev_value.sival_int = primitive->type;
- nxsig_notification(priv->md_notify_pid, &priv->md_notify_event,
- SI_QUEUE, &priv->md_notify_work);
- }
- nxsem_post(&priv->md_exclsem);
- return OK;
- }
- /* By returning a negative value, we let the MAC know that we don't want the
- * primitive and it will free it for us
- */
- return -1;
- }
- /****************************************************************************
- * Name: macnet_rxframe
- *
- * Description:
- * Handle received frames forward by the IEEE 802.15.4 MAC.
- *
- * Returned Value:
- * Zero (OK) is returned on success; a negated errno value is returned on
- * any failure. On success, the ind and its contained iob will be freed.
- * The ind will be intact if this function returns a failure.
- *
- ****************************************************************************/
- static int macnet_rxframe(FAR struct macnet_driver_s *priv,
- FAR struct ieee802154_data_ind_s *ind)
- {
- FAR struct iob_s *iob;
- int ret;
- /* Ignore the frame if the network is not up */
- if (!priv->md_bifup)
- {
- wlwarn("WARNING: Dropped... Network is down\n");
- return -ENETDOWN;
- }
- /* Peek the IOB contained the frame in the struct ieee802154_data_ind_s */
- DEBUGASSERT(priv != NULL && ind != NULL && ind->frame != NULL);
- iob = ind->frame;
- /* Remove the IOB containing the frame. */
- ind->frame = NULL;
- net_lock();
- /* Transfer the frame to the network logic */
- #ifdef CONFIG_NET_IEEE802154
- /* Invoke the PF_IEEE802154 tap first. If the frame matches
- * with a connected PF_IEEE802145 socket, it will take the
- * frame and return success.
- */
- ret = ieee802154_input(&priv->md_dev, iob, (FAR void *)ind);
- if (ret < 0)
- #endif
- #ifdef CONFIG_NET_6LOWPAN
- {
- /* If the frame is not a 6LoWPAN frame, then return an error. The
- * first byte following the MAC head at the io_offset should be a
- * valid IPHC header.
- */
- if ((iob->io_data[iob->io_offset] & SIXLOWPAN_DISPATCH_NALP_MASK) ==
- SIXLOWPAN_DISPATCH_NALP)
- {
- wlwarn("WARNING: Dropped... Not a 6LoWPAN frame: %02x\n",
- iob->io_data[iob->io_offset]);
- ret = -EINVAL;
- }
- else
- {
- /* Make sure the our single packet buffer is attached */
- priv->md_dev.r_dev.d_buf = priv->md_iobuffer.rb_buf;
- /* And give the packet to 6LoWPAN */
- ret = sixlowpan_input(&priv->md_dev, iob, (FAR void *)ind);
- }
- }
- if (ret < 0)
- #endif
- {
- net_unlock();
- ind->frame = iob;
- return ret;
- }
- /* Increment statistics */
- NETDEV_RXPACKETS(&priv->md_dev.r_dev);
- NETDEV_RXIPV6(&priv->md_dev.r_dev);
- net_unlock();
- /* sixlowpan_input() will free the IOB, but we must free the struct
- * ieee802154_primitive_s container here.
- */
- ieee802154_primitive_free((FAR struct ieee802154_primitive_s *)ind);
- return OK;
- }
- /****************************************************************************
- * Name: macnet_txpoll_callback
- *
- * 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
- *
- * Input Parameters:
- * dev - Reference to the NuttX driver state structure
- *
- * Returned Value:
- * OK on success; a negated errno on failure
- *
- * Assumptions:
- * The network is locked.
- *
- ****************************************************************************/
- static int macnet_txpoll_callback(FAR struct net_driver_s *dev)
- {
- /* If zero is returned, the polling will continue until all connections have
- * been examined.
- */
- return 0;
- }
- /****************************************************************************
- * Name: macnet_txpoll_work
- *
- * Description:
- * Perform periodic polling from the worker thread
- *
- * Input Parameters:
- * arg - The argument passed when work_queue() as called.
- *
- * Returned Value:
- * OK on success
- *
- * Assumptions:
- * The network is locked.
- *
- ****************************************************************************/
- static void macnet_txpoll_work(FAR void *arg)
- {
- FAR struct macnet_driver_s *priv = (FAR struct macnet_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();
- #ifdef CONFIG_NET_6LOWPAN
- /* Make sure the our single packet buffer is attached */
- priv->md_dev.r_dev.d_buf = priv->md_iobuffer.rb_buf;
- #endif
- /* Then perform the poll */
- (void)devif_timer(&priv->md_dev.r_dev, macnet_txpoll_callback);
- /* Setup the watchdog poll timer again */
- (void)wd_start(priv->md_txpoll, TXPOLL_WDDELAY, macnet_txpoll_expiry, 1,
- (wdparm_t)priv);
- net_unlock();
- }
- /****************************************************************************
- * Name: macnet_txpoll_expiry
- *
- * Description:
- * Periodic timer handler. Called from the timer interrupt handler.
- *
- * Input 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 macnet_txpoll_expiry(int argc, wdparm_t arg, ...)
- {
- FAR struct macnet_driver_s *priv = (FAR struct macnet_driver_s *)arg;
- /* Schedule to perform the interrupt processing on the worker thread. */
- work_queue(WPANWORK, &priv->md_pollwork, macnet_txpoll_work, priv, 0);
- }
- /****************************************************************************
- * Name: macnet_coord_eaddr
- *
- * Description:
- * Get the extended address of the PAN coordinator.
- *
- * Input Parameters:
- * radio - Reference to a radio network driver state instance.
- * eaddr - The location in which to return the extended address.
- *
- * Returned Value:
- * Zero (OK) on success; a negated errno value on failure.
- *
- ****************************************************************************/
- #if defined(CONFIG_NET_STARPOINT) && defined(CONFIG_NET_6LOWPAN_EXTENDEDADDR)
- static int macnet_coord_eaddr(FAR struct radio_driver_s *radio,
- FAR uint8_t *eaddr)
- {
- FAR struct macnet_driver_s *priv = (FAR struct macnet_driver_s *)radio;
- union ieee802154_macarg_u arg;
- int ret;
- arg.getreq.attr = IEEE802154_ATTR_MAC_COORD_EADDR ;
- ret = mac802154_ioctl(priv->md_mac, MAC802154IOC_MLME_GET_REQUEST,
- (unsigned long)((uintptr_t)&arg));
- if (ret < 0)
- {
- nerr("ERROR: MAC802154IOC_MLME_GET_REQUEST failed: %d\n", ret);
- return ret;
- }
- IEEE802154_EADDRCOPY(eaddr, arg.getreq.attrval.mac.eaddr);
- return OK;
- }
- #endif
- /****************************************************************************
- * Name: macnet_coord_saddr
- *
- * Description:
- * Get the short address of the PAN coordinator.
- *
- * Input Parameters:
- * radio - Reference to a radio network driver state instance.
- * saddr - The location in which to return the short address.
- *
- * Returned Value:
- * Zero (OK) on success; a negated errno value on failure.
- *
- ****************************************************************************/
- #if defined(CONFIG_NET_STARPOINT) && !defined(CONFIG_NET_6LOWPAN_EXTENDEDADDR)
- static int macnet_coord_saddr(FAR struct radio_driver_s *radio,
- FAR uint8_t *saddr)
- {
- FAR struct macnet_driver_s *priv = (FAR struct macnet_driver_s *)radio;
- union ieee802154_macarg_u arg;
- int ret;
- arg.getreq.attr = IEEE802154_ATTR_MAC_COORD_SADDR ;
- ret = mac802154_ioctl(priv->md_mac, MAC802154IOC_MLME_GET_REQUEST,
- (unsigned long)((uintptr_t)&arg));
- if (ret < 0)
- {
- nerr("ERROR: MAC802154IOC_MLME_GET_REQUEST failed: %d\n", ret);
- return ret;
- }
- IEEE802154_SADDRCOPY(saddr, arg.getreq.attrval.mac.saddr);
- return OK;
- }
- #endif
- /****************************************************************************
- * Name: macnet_ifup
- *
- * Description:
- * Creates a MAC-based IP address from the IEEE 802.15.14 short or extended
- * address assigned to the node.
- *
- * 128 112 96 80 64 48 32 16
- * ---- ---- ---- ---- ---- ---- ---- ----
- * fe80 0000 0000 0000 0000 00ff fe00 xxxx 2-byte short address IEEE 48-bit MAC
- * fe80 0000 0000 0000 xxxx xxxx xxxx xxxx 8-byte extended address IEEE EUI-64
- *
- * Input Parameters:
- * dev - Reference to the NuttX driver state structure
- *
- * Returned Value:
- * None
- *
- * Assumptions:
- *
- ****************************************************************************/
- static int macnet_ifup(FAR struct net_driver_s *dev)
- {
- FAR struct macnet_driver_s *priv =
- (FAR struct macnet_driver_s *)dev->d_private;
- int ret;
- ret = macnet_update_nvaddr(dev);
- if (ret == OK)
- {
- uint8_t *nvaddr = dev->d_mac.radio.nv_addr;
- /* Set the IP address based on the addressing assigned to the node */
- dev->d_ipv6addr[0] = HTONS(CONFIG_IEEE802154_NETDEV_DEFAULT_PREFIX_0);
- dev->d_ipv6addr[1] = HTONS(CONFIG_IEEE802154_NETDEV_DEFAULT_PREFIX_1);
- dev->d_ipv6addr[2] = HTONS(CONFIG_IEEE802154_NETDEV_DEFAULT_PREFIX_2);
- dev->d_ipv6addr[3] = HTONS(CONFIG_IEEE802154_NETDEV_DEFAULT_PREFIX_3);
- #ifdef CONFIG_NET_6LOWPAN_EXTENDEDADDR
- dev->d_ipv6addr[4] = HTONS((uint16_t)nvaddr[0] << 8 | (uint16_t)nvaddr[1]);
- dev->d_ipv6addr[5] = HTONS((uint16_t)nvaddr[2] << 8 | (uint16_t)nvaddr[3]);
- dev->d_ipv6addr[6] = HTONS((uint16_t)nvaddr[4] << 8 | (uint16_t)nvaddr[5]);
- dev->d_ipv6addr[7] = HTONS((uint16_t)nvaddr[6] << 8 | (uint16_t)nvaddr[7]);
- /* Invert the U/L bit */
- dev->d_ipv6addr[4] ^= HTONS(0x0200);
- #else
- dev->d_ipv6addr[4] = 0;
- dev->d_ipv6addr[5] = HTONS(0x00ff);
- dev->d_ipv6addr[6] = HTONS(0xfe00);
- dev->d_ipv6addr[7] = HTONS((uint16_t)nvaddr[0] << 8 | (uint16_t)nvaddr[1]);
- #endif
- wlinfo("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]);
- #ifdef CONFIG_NET_6LOWPAN_EXTENDEDADDR
- wlinfo(" Node: %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
- dev->d_mac.radio.nv_addr[0], dev->d_mac.radio.nv_addr[1],
- dev->d_mac.radio.nv_addr[2], dev->d_mac.radio.nv_addr[3],
- dev->d_mac.radio.nv_addr[4], dev->d_mac.radio.nv_addr[5],
- dev->d_mac.radio.nv_addr[6], dev->d_mac.radio.nv_addr[7]);
- #else
- wlinfo(" Node: %02x:%02x\n",
- dev->d_mac.radio.nv_addr[0], dev->d_mac.radio.nv_addr[1]);
- #endif
- /* Set and activate a timer process */
- (void)wd_start(priv->md_txpoll, TXPOLL_WDDELAY, macnet_txpoll_expiry,
- 1, (wdparm_t)priv);
- ret = OK;
- }
- /* The interface is now up */
- priv->md_bifup = true;
- return ret;
- }
- /****************************************************************************
- * Name: macnet_ifdown
- *
- * Description:
- * NuttX Callback: Stop the interface.
- *
- * Input Parameters:
- * dev - Reference to the NuttX driver state structure
- *
- * Returned Value:
- * None
- *
- * Assumptions:
- *
- ****************************************************************************/
- static int macnet_ifdown(FAR struct net_driver_s *dev)
- {
- FAR struct macnet_driver_s *priv = (FAR struct macnet_driver_s *)dev->d_private;
- irqstate_t flags;
- /* Disable interruption */
- flags = enter_critical_section();
- /* Cancel the TX poll timer and TX timeout timers */
- wd_cancel(priv->md_txpoll);
- /* Put the EMAC in its reset, non-operational state. This should be
- * a known configuration that will guarantee the macnet_ifup() always
- * successfully brings the interface back up.
- */
- /* Mark the device "down" */
- priv->md_bifup = false;
- leave_critical_section(flags);
- return OK;
- }
- /****************************************************************************
- * Name: macnet_txavail_work
- *
- * Description:
- * Perform an out-of-cycle poll on the worker thread.
- *
- * Input 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 macnet_txavail_work(FAR void *arg)
- {
- FAR struct macnet_driver_s *priv = (FAR struct macnet_driver_s *)arg;
- wlinfo("ifup=%u\n", priv->md_bifup);
- /* 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->md_bifup)
- {
- #ifdef CONFIG_NET_6LOWPAN
- /* Make sure the our single packet buffer is attached */
- priv->md_dev.r_dev.d_buf = priv->md_iobuffer.rb_buf;
- #endif
- /* Then poll the network for new XMIT data */
- (void)devif_poll(&priv->md_dev.r_dev, macnet_txpoll_callback);
- }
- net_unlock();
- }
- /****************************************************************************
- * Name: macnet_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.
- *
- * Input Parameters:
- * dev - Reference to the NuttX driver state structure
- *
- * Returned Value:
- * None
- *
- * Assumptions:
- * Called in normal user mode
- *
- ****************************************************************************/
- static int macnet_txavail(FAR struct net_driver_s *dev)
- {
- FAR struct macnet_driver_s *priv = (FAR struct macnet_driver_s *)dev->d_private;
- wlinfo("Available=%u\n", work_available(&priv->md_pollwork));
- /* 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->md_pollwork))
- {
- /* Schedule to serialize the poll on the worker thread. */
- work_queue(WPANWORK, &priv->md_pollwork, macnet_txavail_work, priv, 0);
- }
- return OK;
- }
- /****************************************************************************
- * Name: macnet_addmac
- *
- * Description:
- * NuttX Callback: Add the specified MAC address to the hardware multicast
- * address filtering
- *
- * Input Parameters:
- * dev - Reference to the NuttX driver state structure
- * mac - The MAC address to be added
- *
- * Returned Value:
- * None
- *
- * Assumptions:
- *
- ****************************************************************************/
- #ifdef CONFIG_NET_MCASTGROUP
- static int macnet_addmac(FAR struct net_driver_s *dev, FAR const uint8_t *mac)
- {
- FAR struct macnet_driver_s *priv = (FAR struct macnet_driver_s *)dev->d_private;
- /* Add the MAC address to the hardware multicast routing table. Not used
- * with IEEE 802.15.4 radios.
- */
- return -ENOSYS;
- }
- #endif
- /****************************************************************************
- * Name: macnet_rmmac
- *
- * Description:
- * NuttX Callback: Remove the specified MAC address from the hardware multicast
- * address filtering
- *
- * Input Parameters:
- * dev - Reference to the NuttX driver state structure
- * mac - The MAC address to be removed
- *
- * Returned Value:
- * None
- *
- * Assumptions:
- *
- ****************************************************************************/
- #ifdef CONFIG_NET_MCASTGROUP
- static int macnet_rmmac(FAR struct net_driver_s *dev, FAR const uint8_t *mac)
- {
- FAR struct macnet_driver_s *priv = (FAR struct macnet_driver_s *)dev->d_private;
- /* Remove the MAC address from the hardware multicast routing table Not used
- * with IEEE 802.15.4 radios.
- */
- return -ENOSYS;
- }
- #endif
- /****************************************************************************
- * Name: macnet_ioctl
- *
- * Description:
- * Handle network IOCTL commands directed to this device.
- *
- * Input Parameters:
- * dev - Reference to the NuttX driver state structure
- * cmd - The IOCTL command
- * arg - The argument for the IOCTL command
- *
- * Returned Value:
- * OK on success; Negated errno on failure.
- *
- * Assumptions:
- *
- ****************************************************************************/
- #ifdef CONFIG_NETDEV_IOCTL
- static int macnet_ioctl(FAR struct net_driver_s *dev, int cmd,
- unsigned long arg)
- {
- FAR struct macnet_driver_s *priv = (FAR struct macnet_driver_s *)dev->d_private;
- int ret = -EINVAL;
- ret = nxsem_wait(&priv->md_exclsem);
- if (ret < 0)
- {
- wlerr("ERROR: nxsem_wait failed: %d\n", ret);
- return ret;
- }
- /* Check for IOCTLs aimed at the IEEE802.15.4 MAC layer */
- if (_MAC802154IOCVALID(cmd))
- {
- FAR struct ieee802154_netmac_s *netmac =
- (FAR struct ieee802154_netmac_s *)arg;
- if (netmac != NULL)
- {
- unsigned long macarg = (unsigned int)((uintptr_t)&netmac->u);
- switch (cmd)
- {
- /* Command: MAC802154IOC_NOTIFY_REGISTER
- * Description: Register to receive a signal whenever there is a
- * event primitive sent from the MAC layer.
- * Argument: A read-only pointer to an instance of struct
- * macnet_notify_s
- * Return: Zero (OK) on success. Minus one will be returned on
- * failure with the errno value set appropriately.
- */
- case MAC802154IOC_NOTIFY_REGISTER:
- {
- /* Save the notification events */
- priv->md_notify_event = netmac->u.event;
- priv->md_notify_pid = getpid();
- priv->md_notify_registered = true;
- ret = OK;
- }
- break;
- case MAC802154IOC_GET_EVENT:
- {
- FAR struct ieee802154_primitive_s *primitive;
- while (1)
- {
- /* Try popping an event off the queue */
- primitive = (FAR struct ieee802154_primitive_s *)
- sq_remfirst(&priv->primitive_queue);
- /* If there was an event to pop off, copy it into the user
- * data and free it from the MAC layer's memory.
- */
- if (primitive != NULL)
- {
- memcpy(&netmac->u, primitive,
- sizeof(struct ieee802154_primitive_s));
- /* Free the event */
- ieee802154_primitive_free(primitive);
- ret = OK;
- break;
- }
- /* There can only be one getevent pending at a time */
- if (priv->md_eventpending)
- {
- ret = -EAGAIN;
- break;
- }
- priv->md_eventpending = true;
- nxsem_post(&priv->md_exclsem);
- /* Wait to be signaled when an event is queued */
- ret = nxsem_wait(&priv->md_eventsem);
- if (ret < 0)
- {
- DEBUGASSERT(ret == -EINTR || ret == -ECANCELED);
- priv->md_eventpending = false;
- return ret;
- }
- /* Get exclusive access again, then loop back around and try and
- * pop an event off the queue
- */
- ret = nxsem_wait(&priv->md_exclsem);
- if (ret < 0)
- {
- wlerr("ERROR: nxsem_wait failed: %d\n", ret);
- return ret;
- }
- }
- }
- break;
- case MAC802154IOC_ENABLE_EVENTS:
- {
- priv->md_enableevents = netmac->u.enable;
- ret = OK;
- }
- break;
- default:
- {
- ret = mac802154_ioctl(priv->md_mac, cmd, macarg);
- }
- break;
- }
- }
- }
- /* Okay, we have no idea what this command is.. just give to the
- * IEEE802.15.4 MAC layer without modification.
- */
- else
- {
- ret = mac802154_ioctl(priv->md_mac, cmd, arg);
- }
- nxsem_post(&priv->md_exclsem);
- return ret;
- }
- #endif
- /****************************************************************************
- * Name: macnet_get_mhrlen
- *
- * Description:
- * Calculate the MAC header length given the frame meta-data.
- *
- * Input Parameters:
- * netdev - The network device that will mediate the MAC interface
- * meta - Obfuscated metadata structure needed to create the radio
- * MAC header
- *
- * Returned Value:
- * A non-negative MAC header length is returned on success; a negated
- * errno value is returned on any failure.
- *
- ****************************************************************************/
- static int macnet_get_mhrlen(FAR struct radio_driver_s *netdev,
- FAR const void *meta)
- {
- FAR struct macnet_driver_s *priv =
- (FAR struct macnet_driver_s *)netdev;
- FAR const struct ieee802154_frame_meta_s *pktmeta =
- (FAR const struct ieee802154_frame_meta_s *)meta;
- DEBUGASSERT(priv != NULL && priv->md_mac != NULL && pktmeta != NULL);
- return mac802154_get_mhrlen(priv->md_mac, pktmeta);
- }
- /****************************************************************************
- * Name: macnet_req_data
- *
- * Description:
- * Requests the transfer of a list of frames to the MAC.
- *
- * Input Parameters:
- * netdev - The network device that will mediate the MAC interface
- * meta - Obfuscated metadata structure needed to create the radio
- * MAC header
- * framelist - Head of a list of frames to be transferred.
- *
- * Returned Value:
- * Zero (OK) returned on success; a negated errno value is returned on
- * any failure.
- *
- ****************************************************************************/
- static int macnet_req_data(FAR struct radio_driver_s *netdev,
- FAR const void *meta, FAR struct iob_s *framelist)
- {
- FAR struct macnet_driver_s *priv =
- (FAR struct macnet_driver_s *)netdev;
- FAR const struct ieee802154_frame_meta_s *pktmeta =
- (FAR const struct ieee802154_frame_meta_s *)meta;
- FAR struct iob_s *iob;
- int ret;
- wlinfo("Received framelist\n");
- DEBUGASSERT(priv != NULL && pktmeta != NULL && framelist != NULL);
- /* Add the incoming list of frames to the MAC's outgoing queue */
- for (iob = framelist; iob != NULL; iob = framelist)
- {
- /* Increment statistics */
- NETDEV_TXPACKETS(&priv->md_dev.r_dev);
- /* Remove the IOB from the queue */
- framelist = iob->io_flink;
- iob->io_flink = NULL;
- /* Transfer the frame to the MAC. mac802154_req_data will return
- * -EINTR if a signal is received during certain phases of processing.
- * In this context we just need to ignore -EINTR errors and try again.
- */
- do
- {
- ret = mac802154_req_data(priv->md_mac, pktmeta, iob);
- }
- while (ret == -EINTR);
- if (ret < 0)
- {
- wlerr("ERROR: mac802154_req_data failed: %d\n", ret);
- iob_free(iob, IOBUSER_WIRELESS_MAC802154_NETDEV);
- for (iob = framelist; iob != NULL; iob = framelist)
- {
- /* Remove the IOB from the queue and free */
- framelist = iob->io_flink;
- iob_free(iob, IOBUSER_WIRELESS_MAC802154_NETDEV);
- }
- NETDEV_TXERRORS(&priv->md_dev.r_dev);
- return ret;
- }
- NETDEV_TXDONE(&priv->md_dev.r_dev);
- }
- return OK;
- }
- /****************************************************************************
- * Name: macnet_properties
- *
- * Description:
- * Different packet radios may have different properties. If there are
- * multiple packet radios, then those properties have to be queried at
- * run time. This information is provided to the 6LoWPAN network via the
- * following structure.
- *
- * Input Parameters:
- * netdev - The network device to be queried
- * properties - Location where radio properties will be returned.
- *
- * Returned Value:
- * Zero (OK) returned on success; a negated errno value is returned on
- * any failure.
- *
- ****************************************************************************/
- static int macnet_properties(FAR struct radio_driver_s *netdev,
- FAR struct radiodev_properties_s *properties)
- {
- DEBUGASSERT(netdev != NULL && properties != NULL);
- memset(properties, 0, sizeof(struct radiodev_properties_s));
- /* General */
- properties->sp_addrlen = MACNET_ADDRSIZE; /* Length of an address */
- properties->sp_framelen = MACNET_FRAMELEN; /* Fixed frame length */
- /* Multicast address (uses broadcast address)
- *
- * For meshes (only) a multicast address candetermined by the first 3 bits
- * of a short address (RFC 4944):
- *
- * 0xxxxxxx xxxxxxxx: Unicast address
- * 100xxxxx xxxxxxxx: Multicast address
- * 101xxxxx xxxxxxxx: Reserved
- * 110xxxxx xxxxxxxx: Reserved
- * 111xxxxx xxxxxxxx: Reserved
- *
- * Otherwise, Multicast is implemented with the broadcast address
- * (qualified by the destination PANID).
- */
- properties->sp_mcast.nv_addrlen = IEEE802154_SADDRSIZE;
- memset(properties->sp_mcast.nv_addr, 0xff, RADIO_MAX_ADDRLEN);
- /* Broadcast address */
- properties->sp_bcast.nv_addrlen = IEEE802154_SADDRSIZE;
- memset(properties->sp_mcast.nv_addr, 0xff, RADIO_MAX_ADDRLEN);
- #ifdef CONFIG_NET_STARPOINT
- /* Star hub node address.
- *
- * If this node is a "point" in a star topology, then the hub node
- * MAC address is the address of the hub/PAN coordinator.
- */
- #ifdef CONFIG_NET_6LOWPAN_EXTENDEDADDR
- (void)macnet_coord_eaddr(netdev, properties->sp_hubnode.nv_addr);
- properties->sp_hubnode.nv_addrlen = IEEE802154_EADDRSIZE;
- #else
- (void)macnet_coord_saddr(netdev, properties->sp_hubnode.nv_addr);
- properties->sp_hubnode.nv_addrlen = IEEE802154_SADDRSIZE;
- #endif
- #endif
- return OK;
- }
- /****************************************************************************
- * 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 Value:
- * Zero (OK) is returned on success. Otherwise a negated errno value is
- * returned to indicate the nature of the failure.
- *
- ****************************************************************************/
- int mac802154netdev_register(MACHANDLE mac)
- {
- FAR struct macnet_driver_s *priv;
- FAR struct radio_driver_s *radio;
- FAR struct net_driver_s *dev;
- FAR struct mac802154_maccb_s *maccb;
- int ret;
- DEBUGASSERT(mac != NULL);
- /* Get the interface structure associated with this interface number. */
- priv = (FAR struct macnet_driver_s *)
- kmm_zalloc(sizeof(struct macnet_driver_s));
- if (priv == NULL)
- {
- nerr("ERROR: Failed to allocate the device structure\n");
- return -ENOMEM;
- }
- /* Initialize the driver structure */
- radio = &priv->md_dev;
- dev = &radio->r_dev;
- dev->d_ifup = macnet_ifup; /* I/F up (new IP address) callback */
- dev->d_ifdown = macnet_ifdown; /* I/F down callback */
- dev->d_txavail = macnet_txavail; /* New TX data callback */
- #ifdef CONFIG_NET_MCASTGROUP
- dev->d_addmac = macnet_addmac; /* Add multicast MAC address */
- dev->d_rmmac = macnet_rmmac; /* Remove multicast MAC address */
- #endif
- #ifdef CONFIG_NETDEV_IOCTL
- dev->d_ioctl = macnet_ioctl; /* Handle network IOCTL commands */
- #endif
- dev->d_private = (FAR void *)priv; /* Used to recover private state from dev */
- /* Create a watchdog for timing polling for and timing of transmissions */
- priv->md_mac = mac; /* Save the MAC interface instance */
- priv->md_txpoll = wd_create(); /* Create periodic poll timer */
- /* Setup a locking semaphore for exclusive device driver access */
- nxsem_init(&priv->md_exclsem, 0, 1);
- DEBUGASSERT(priv->md_txpoll != NULL);
- /* Set the network mask. */
- macnet_netmask(dev);
- /* Initialize the Network frame-related callbacks */
- radio->r_get_mhrlen = macnet_get_mhrlen; /* Get MAC header length */
- radio->r_req_data = macnet_req_data; /* Enqueue frame for transmission */
- radio->r_properties = macnet_properties; /* Return radio properties */
- /* Initialize fields related to MAC event handling */
- priv->md_eventpending = false;
- nxsem_init(&priv->md_eventsem, 0, 0);
- nxsem_setprotocol(&priv->md_eventsem, SEM_PRIO_NONE);
- sq_init(&priv->primitive_queue);
- priv->md_enableevents = false;
- priv->md_notify_registered = false;
- /* Initialize the MAC callbacks */
- priv->md_cb.mc_priv = priv;
- maccb = &priv->md_cb.mc_cb;
- maccb->flink = NULL;
- maccb->prio = CONFIG_IEEE802154_NETDEV_RECVRPRIO;
- maccb->notify = macnet_notify;
- /* Bind the callback structure */
- ret = mac802154_bind(mac, maccb);
- if (ret < 0)
- {
- nerr("ERROR: Failed to bind the MAC callbacks: %d\n", ret);
- goto errout;
- }
- ret = macnet_update_nvaddr(&priv->md_dev.r_dev);
- if (ret < 0)
- {
- nerr("ERROR: Failed updating nvaddr: %d\n", ret);
- goto errout;
- }
- #ifdef CONFIG_NET_6LOWPAN
- /* Make sure the our single packet buffer is attached. We must do this before
- * registering the device since, once the device is registered, a packet may
- * be attempted to be forwarded and require the buffer.
- */
- priv->md_dev.r_dev.d_buf = priv->md_iobuffer.rb_buf;
- #endif
- /* Register the device with the OS so that socket IOCTLs can be performed */
- (void)netdev_register(&priv->md_dev.r_dev, NET_LL_IEEE802154);
- /* Put the network in the DOWN state, let the user decide when to bring it up */
- dev->d_flags = IFF_DOWN;
- return macnet_ifdown(&priv->md_dev.r_dev);
- errout:
- /* Release wdog timers */
- wd_delete(priv->md_txpoll);
- /* Free memory and return the error */
- kmm_free(priv);
- return ret;
- }
- #endif /* CONFIG_NET && CONFIG_NET_skeleton */
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