/**************************************************************************** * drivers/wireless/bcmf_netdev.c * * Copyright (C) 2017 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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 #if defined(CONFIG_NET) && defined(CONFIG_IEEE80211_BROADCOM_FULLMAC) #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef CONFIG_NET_PKT # include #endif #include "bcmf_driver.h" #include "bcmf_cdc.h" #include "bcmf_ioctl.h" /**************************************************************************** * 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_IEEE80211_BROADCOM_HPWORK) # define BCMFWORK HPWORK # elif defined(CONFIG_IEEE80211_BROADCOM_HLWORK) # define BCMFWORK LPWORK # else # error Neither CONFIG_IEEE80211_BROADCOM_HPWORK nor CONFIG_IEEE80211_BROADCOM_HLWORK defined # endif #endif /* CONFIG_IEEE80211_BROADCOM_NINTERFACES determines the number of physical interfaces * that will be supported. */ #ifndef CONFIG_IEEE80211_BROADCOM_NINTERFACES # define CONFIG_IEEE80211_BROADCOM_NINTERFACES 1 #endif /* TX poll delay = 1 seconds. CLK_TCK is the number of clock ticks per second */ #define BCMF_WDDELAY (1*CLK_TCK) /* TX timeout = 1 minute */ #define BCMF_TXTIMEOUT (60*CLK_TCK) /* This is a helper pointer for accessing the contents of the Ethernet header */ #define BUF ((struct eth_hdr_s *)priv->bc_dev.d_buf) /**************************************************************************** * Private Types ****************************************************************************/ /**************************************************************************** * Private Data ****************************************************************************/ /* These statically allocated structur would mean that only a single * instance of the device could be supported. In order to support multiple * devices instances, this data would have to be allocated dynamically. */ /* A single packet buffer per device is used here. There might be multiple * packet buffers in a more complex, pipelined design. * * NOTE that if CONFIG_IEEE80211_BROADCOM_NINTERFACES were greater than 1, you would * need a minimum on one packetbuffer per instance. Much better to be * allocated dynamically. */ static uint8_t g_pktbuf[MAX_NET_DEV_MTU + CONFIG_NET_GUARDSIZE]; /**************************************************************************** * Private Function Prototypes ****************************************************************************/ /* Common TX logic */ static int bcmf_transmit(FAR struct bcmf_dev_s *priv); static int bcmf_txpoll(FAR struct net_driver_s *dev); /* Interrupt handling */ static void bcmf_receive(FAR struct bcmf_dev_s *priv); static void bcmf_txdone(FAR struct bcmf_dev_s *priv); static void bcmf_interrupt_work(FAR void *arg); static int bcmf_interrupt(int irq, FAR void *context, FAR void *arg); /* Watchdog timer expirations */ static void bcmf_txtimeout_work(FAR void *arg); static void bcmf_txtimeout_expiry(int argc, wdparm_t arg, ...); static void bcmf_poll_work(FAR void *arg); static void bcmf_poll_expiry(int argc, wdparm_t arg, ...); /* NuttX callback functions */ static int bcmf_ifup(FAR struct net_driver_s *dev); static int bcmf_ifdown(FAR struct net_driver_s *dev); static void bcmf_txavail_work(FAR void *arg); static int bcmf_txavail(FAR struct net_driver_s *dev); #if defined(CONFIG_NET_IGMP) || defined(CONFIG_NET_ICMPv6) static int bcmf_addmac(FAR struct net_driver_s *dev, FAR const uint8_t *mac); #ifdef CONFIG_NET_IGMP static int bcmf_rmmac(FAR struct net_driver_s *dev, FAR const uint8_t *mac); #endif #ifdef CONFIG_NET_ICMPv6 static void bcmf_ipv6multicast(FAR struct bcmf_dev_s *priv); #endif #endif #ifdef CONFIG_NETDEV_IOCTL static int bcmf_ioctl(FAR struct net_driver_s *dev, int cmd, unsigned long arg); #endif /**************************************************************************** * Private Functions ****************************************************************************/ /**************************************************************************** * Name: bcmf_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 bcmf_transmit(FAR struct bcmf_dev_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->bc_dev); /* Send the packet: address=priv->bc_dev.d_buf, length=priv->bc_dev.d_len */ /* Enable Tx interrupts */ /* Setup the TX timeout watchdog (perhaps restarting the timer) */ (void)wd_start(priv->bc_txtimeout, BCMF_TXTIMEOUT, bcmf_txtimeout_expiry, 1, (wdparm_t)priv); return OK; } /**************************************************************************** * Name: bcmf_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 bcmf_txpoll(FAR struct net_driver_s *dev) { FAR struct bcmf_dev_s *priv = (FAR struct bcmf_dev_s *)dev->d_private; /* If the polling resulted in data that should be sent out on the network, * the field d_len is set to a value > 0. */ if (priv->bc_dev.d_len > 0) { /* Look up the destination MAC address and add it to the Ethernet * header. */ #ifdef CONFIG_NET_IPv4 #ifdef CONFIG_NET_IPv6 if (IFF_IS_IPv4(priv->bc_dev.d_flags)) #endif { arp_out(&priv->bc_dev); } #endif /* CONFIG_NET_IPv4 */ #ifdef CONFIG_NET_IPv6 #ifdef CONFIG_NET_IPv4 else #endif { neighbor_out(&priv->bc_dev); } #endif /* CONFIG_NET_IPv6 */ /* Send the packet */ bcmf_transmit(priv); /* Check if there is room in the device to hold another packet. If not, * return a non-zero value to terminate the poll. */ } /* If zero is returned, the polling will continue until all connections have * been examined. */ return 0; } /**************************************************************************** * Name: bcmf_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 bcmf_receive(FAR struct bcmf_dev_s *priv) { do { /* Check for errors and update statistics */ /* Check if the packet is a valid size for the network buffer * configuration. */ /* Copy the data data from the hardware to priv->bc_dev.d_buf. Set * amount of data in priv->bc_dev.d_len */ #ifdef CONFIG_NET_PKT /* When packet sockets are enabled, feed the frame into the packet tap */ pkt_input(&priv->bc_dev); #endif /* We only accept IP packets of the configured type and ARP packets */ #ifdef CONFIG_NET_IPv4 if (BUF->type == HTONS(ETHTYPE_IP)) { ninfo("IPv4 frame\n"); NETDEV_RXIPV4(&priv->bc_dev); /* Handle ARP on input then give the IPv4 packet to the network * layer */ arp_ipin(&priv->bc_dev); ipv4_input(&priv->bc_dev); /* If the above function invocation resulted in data that should be * sent out on the network, the field d_len will set to a value > 0. */ if (priv->bc_dev.d_len > 0) { /* Update the Ethernet header with the correct MAC address */ #ifdef CONFIG_NET_IPv6 if (IFF_IS_IPv4(priv->bc_dev.d_flags)) #endif { arp_out(&priv->bc_dev); } #ifdef CONFIG_NET_IPv6 else { neighbor_out(&kel->bc_dev); } #endif /* And send the packet */ bcmf_transmit(priv); } } else #endif #ifdef CONFIG_NET_IPv6 if (BUF->type == HTONS(ETHTYPE_IP6)) { ninfo("Iv6 frame\n"); NETDEV_RXIPV6(&priv->bc_dev); /* Give the IPv6 packet to the network layer */ ipv6_input(&priv->bc_dev); /* If the above function invocation resulted in data that should be * sent out on the network, the field d_len will set to a value > 0. */ if (priv->bc_dev.d_len > 0) { /* Update the Ethernet header with the correct MAC address */ #ifdef CONFIG_NET_IPv4 if (IFF_IS_IPv4(priv->bc_dev.d_flags)) { arp_out(&priv->bc_dev); } else #endif #ifdef CONFIG_NET_IPv6 { neighbor_out(&priv->bc_dev); } #endif /* And send the packet */ bcmf_transmit(priv); } } else #endif #ifdef CONFIG_NET_ARP if (BUF->type == htons(ETHTYPE_ARP)) { arp_arpin(&priv->bc_dev); NETDEV_RXARP(&priv->bc_dev); /* If the above function invocation resulted in data that should be * sent out on the network, the field d_len will set to a value > 0. */ if (priv->bc_dev.d_len > 0) { bcmf_transmit(priv); } } else #endif { NETDEV_RXDROPPED(&priv->bc_dev); } } while (1); /* While there are more packets to be processed */ } /**************************************************************************** * Name: bcmf_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 bcmf_txdone(FAR struct bcmf_dev_s *priv) { int delay; /* Check for errors and update statistics */ NETDEV_TXDONE(priv->bc_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->bc_txtimeout); /* And disable further TX interrupts. */ /* In any event, poll the network for new TX data */ (void)devif_poll(&priv->bc_dev, bcmf_txpoll); } /**************************************************************************** * Name: bcmf_interrupt_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 bcmf_interrupt_work(FAR void *arg) { FAR struct bcmf_dev_s *priv = (FAR struct bcmf_dev_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 bcmf_receive() */ bcmf_receive(priv); /* Check if a packet transmission just completed. If so, call bcmf_txdone. * This may disable further Tx interrupts if there are no pending * transmissions. */ bcmf_txdone(priv); net_unlock(); /* Re-enable Ethernet interrupts */ #warning Missing logic } /**************************************************************************** * Name: bcmf_interrupt * * 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 bcmf_interrupt(int irq, FAR void *context, FAR void *arg) { FAR struct bcmf_dev_s *priv = (FAR struct bcmf_dev_s *)arg; DEBUGASSERT(priv != NULL); /* Disable further Ethernet interrupts. Because Ethernet interrupts are * also disabled if the TX timeout event occurs, there can be no race * condition here. */ #warning Missing logic /* 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->bc_txtimeout); } /* Schedule to perform the interrupt processing on the worker thread. */ work_queue(BCMFWORK, &priv->bc_irqwork, bcmf_interrupt_work, priv, 0); return OK; } /**************************************************************************** * Name: bcmf_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 bcmf_txtimeout_work(FAR void *arg) { FAR struct bcmf_dev_s *priv = (FAR struct bcmf_dev_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->bc_dev); /* Then reset the hardware */ /* Then poll the network for new XMIT data */ (void)devif_poll(&priv->bc_dev, bcmf_txpoll); net_unlock(); } /**************************************************************************** * Name: bcmf_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 bcmf_txtimeout_expiry(int argc, wdparm_t arg, ...) { FAR struct bcmf_dev_s *priv = (FAR struct bcmf_dev_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. */ #warning Missing logic /* Schedule to perform the TX timeout processing on the worker thread. */ work_queue(BCMFWORK, &priv->bc_irqwork, bcmf_txtimeout_work, priv, 0); } /**************************************************************************** * Name: bcmf_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 bcmf_poll_process(FAR struct bcmf_dev_s *priv) { } /**************************************************************************** * Name: bcmf_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 bcmf_poll_work(FAR void *arg) { FAR struct bcmf_dev_s *priv = (FAR struct bcmf_dev_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->bc_dev, bcmf_txpoll); /* Setup the watchdog poll timer again */ (void)wd_start(priv->bc_txpoll, BCMF_WDDELAY, bcmf_poll_expiry, 1, (wdparm_t)priv); net_unlock(); } /**************************************************************************** * Name: bcmf_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 bcmf_poll_expiry(int argc, wdparm_t arg, ...) { FAR struct bcmf_dev_s *priv = (FAR struct bcmf_dev_s *)arg; /* Schedule to perform the interrupt processing on the worker thread. */ work_queue(BCMFWORK, &priv->bc_pollwork, bcmf_poll_work, priv, 0); } /**************************************************************************** * Name: bcmf_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 bcmf_ifup(FAR struct net_driver_s *dev) { FAR struct bcmf_dev_s *priv = (FAR struct bcmf_dev_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->bc_dev.d_mac.ether.ether_addr_octet */ #ifdef CONFIG_NET_ICMPv6 /* Set up IPv6 multicast address filtering */ bcmf_ipv6multicast(priv); #endif /* Set and activate a timer process */ (void)wd_start(priv->bc_txpoll, BCMF_WDDELAY, bcmf_poll_expiry, 1, (wdparm_t)priv); /* Enable the hardware interrupt */ priv->bc_bifup = true; #warning Missing logic return OK; } /**************************************************************************** * Name: bcmf_ifdown * * Description: * NuttX Callback: Stop the interface. * * Parameters: * dev - Reference to the NuttX driver state structure * * Returned Value: * None * * Assumptions: * ****************************************************************************/ static int bcmf_ifdown(FAR struct net_driver_s *dev) { FAR struct bcmf_dev_s *priv = (FAR struct bcmf_dev_s *)dev->d_private; irqstate_t flags; /* Disable the hardware interrupt */ flags = enter_critical_section(); #warning Missing logic /* Cancel the TX poll timer and TX timeout timers */ wd_cancel(priv->bc_txpoll); wd_cancel(priv->bc_txtimeout); /* Put the EMAC in its reset, non-operational state. This should be * a known configuration that will guarantee the bcmf_ifup() always * successfully brings the interface back up. */ /* Mark the device "down" */ priv->bc_bifup = false; leave_critical_section(flags); return OK; } /**************************************************************************** * Name: bcmf_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 bcmf_txavail_work(FAR void *arg) { FAR struct bcmf_dev_s *priv = (FAR struct bcmf_dev_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->bc_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->bc_dev, bcmf_txpoll); } net_unlock(); } /**************************************************************************** * Name: bcmf_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 bcmf_txavail(FAR struct net_driver_s *dev) { FAR struct bcmf_dev_s *priv = (FAR struct bcmf_dev_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->bc_pollwork)) { /* Schedule to serialize the poll on the worker thread. */ work_queue(BCMFWORK, &priv->bc_pollwork, bcmf_txavail_work, priv, 0); } return OK; } /**************************************************************************** * Name: bcmf_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 bcmf_addmac(FAR struct net_driver_s *dev, FAR const uint8_t *mac) { FAR struct bcmf_dev_s *priv = (FAR struct bcmf_dev_s *)dev->d_private; /* Add the MAC address to the hardware multicast routing table */ return OK; } #endif /**************************************************************************** * Name: bcmf_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 bcmf_rmmac(FAR struct net_driver_s *dev, FAR const uint8_t *mac) { FAR struct bcmf_dev_s *priv = (FAR struct bcmf_dev_s *)dev->d_private; /* Add the MAC address to the hardware multicast routing table */ return OK; } #endif /**************************************************************************** * Name: bcmf_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 bcmf_ipv6multicast(FAR struct bcmf_dev_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)bcmf_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)bcmf_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)bcmf_addmac(dev, g_ipv6_ethallrouters.ether_addr_octet); #endif /* CONFIG_NET_ICMPv6_ROUTER */ } #endif /* CONFIG_NET_ICMPv6 */ /**************************************************************************** * Name: bcmf_ioctl * * Description: * Handle network IOCTL commands directed to this device. * * 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 bcmf_ioctl(FAR struct net_driver_s *dev, int cmd, unsigned long arg) { FAR struct bcmf_dev_s *priv = (FAR struct bcmf_dev_s *)dev->d_private; int ret; /* Decode and dispatch the driver-specific IOCTL command */ switch (cmd) { case SIOCSIWFREQ: /* Set channel/frequency (Hz) */ wlwarn("WARNING: SIOCSIWFREQ not implemented\n"); ret = -ENOSYS; break; case SIOCGIWFREQ: /* Get channel/frequency (Hz) */ wlwarn("WARNING: SIOCGIWFREQ not implemented\n"); ret = -ENOSYS; break; case SIOCSIWMODE: /* Set operation mode */ wlwarn("WARNING: SIOCSIWMODE not implemented\n"); ret = -ENOSYS; break; case SIOCGIWMODE: /* Get operation mode */ wlwarn("WARNING: SIOCGIWMODE not implemented\n"); ret = -ENOSYS; break; case SIOCSIWAP: /* Set access point MAC addresses */ wlwarn("WARNING: SIOCSIWAP not implemented\n"); ret = -ENOSYS; break; case SIOCGIWAP: /* Get access point MAC addresses */ wlwarn("WARNING: SIOCGIWAP not implemented\n"); ret = -ENOSYS; break; case SIOCSIWESSID: /* Set ESSID (network name) */ wlwarn("WARNING: SIOCSIWESSID not implemented\n"); ret = -ENOSYS; break; case SIOCGIWESSID: /* Get ESSID */ wlwarn("WARNING: SIOCGIWESSID not implemented\n"); ret = -ENOSYS; break; case SIOCSIWRATE: /* Set default bit rate (bps) */ wlwarn("WARNING: SIOCSIWRATE not implemented\n"); ret = -ENOSYS; break; case SIOCGIWRATE: /* Get default bit rate (bps) */ wlwarn("WARNING: SIOCGIWRATE not implemented\n"); ret = -ENOSYS; break; case SIOCSIWTXPOW: /* Set transmit power (dBm) */ wlwarn("WARNING: SIOCSIWTXPOW not implemented\n"); ret = -ENOSYS; break; case SIOCGIWTXPOW: /* Get transmit power (dBm) */ wlwarn("WARNING: SIOCGIWTXPOW not implemented\n"); ret = -ENOSYS; break; default: nerr("ERROR: Unrecognized IOCTL command: %d\n", command); ret = -ENOTTY; /* Special return value for this case */ break; } return ret; } #endif /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: bcmf_netdev_register * * Description: * Register a network driver and set Broadcom chip in a proper state * * Parameters: * priv - Broadcom driver device * * Returned Value: * OK on success; Negated errno on failure. * * Assumptions: * ****************************************************************************/ int bcmf_netdev_register(FAR struct bcmf_dev_s *priv) { int ret; uint32_t out_len; /* Initialize network driver structure */ memset(&priv->bc_dev, 0, sizeof(priv->bc_dev)); priv->bc_dev.d_buf = g_pktbuf; /* Single packet buffer */ priv->bc_dev.d_ifup = bcmf_ifup; /* I/F up (new IP address) callback */ priv->bc_dev.d_ifdown = bcmf_ifdown; /* I/F down callback */ priv->bc_dev.d_txavail = bcmf_txavail; /* New TX data callback */ #ifdef CONFIG_NET_IGMP priv->bc_dev.d_addmac = bcmf_addmac; /* Add multicast MAC address */ priv->bc_dev.d_rmmac = bcmf_rmmac; /* Remove multicast MAC address */ #endif #ifdef CONFIG_NETDEV_IOCTL priv->bc_dev.d_ioctl = bcmf_ioctl; /* Handle network IOCTL commands */ #endif priv->bc_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->bc_txpoll = wd_create(); /* Create periodic poll timer */ priv->bc_txtimeout = wd_create(); /* Create TX timeout timer */ DEBUGASSERT(priv->bc_txpoll != NULL && priv->bc_txtimeout != NULL); /* Put the interface in the down state. This usually amounts to resetting * the device and/or calling bcmf_ifdown(). */ ret = bcmf_wl_enable(priv, false); if (ret != OK) { return -EIO; } /* Query MAC address */ out_len = ETHER_ADDR_LEN; ret = bcmf_cdc_iovar_request(priv, CHIP_STA_INTERFACE, false, IOVAR_STR_CUR_ETHERADDR, priv->bc_dev.d_mac.ether.ether_addr_octet, &out_len); if (ret != OK) { return -EIO; } wlinfo("MAC address is %02X:%02X:%02X:%02X:%02X:%02X\n", priv->bc_dev.d_mac.ether.ether_addr_octet[0], priv->bc_dev.d_mac.ether.ether_addr_octet[1], priv->bc_dev.d_mac.ether.ether_addr_octet[2], priv->bc_dev.d_mac.ether.ether_addr_octet[3], priv->bc_dev.d_mac.ether.ether_addr_octet[4], priv->bc_dev.d_mac.ether.ether_addr_octet[5]); /* Register the device with the OS so that socket IOCTLs can be performed */ (void)netdev_register(&priv->bc_dev, NET_LL_IEEE80211); return OK; } #endif /* CONFIG_NET && CONFIG_IEEE80211_BROADCOM_FULLMAC */