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nuttx/drivers/wireless/ieee80211/bcm43xxx/bcmf_netdev.c
Alexander Lunev df40531a07 bcm43xxx: fixed an issue with wrong devif_timer() invocations 
on bcmf_netdev_notify_tx_done events
that provoked massive TCP spurious retransmissions;

bcm43xxx: fixed an issue with sporadic stalls of TX poll timer.
2021-10-03 17:36:09 -03:00

1201 lines
32 KiB
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/****************************************************************************
* drivers/wireless/ieee80211/bcm43xxx/bcmf_netdev.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#if defined(CONFIG_NET) && defined(CONFIG_IEEE80211_BROADCOM_FULLMAC)
#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/arp.h>
#include <nuttx/net/netdev.h>
#include <nuttx/wireless/wireless.h>
#ifdef CONFIG_NET_PKT
# include <nuttx/net/pkt.h>
#endif
#include "bcmf_driver.h"
#include "bcmf_cdc.h"
#include "bcmf_bdc.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)
#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 BCMFWORK LPWORK
/* 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 Ethernet header */
#define BUF ((struct eth_hdr_s *)priv->bc_dev.d_buf)
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/* Common TX logic */
static int bcmf_transmit(FAR struct bcmf_dev_s *priv,
FAR struct bcmf_frame_s *frame);
static void bcmf_receive(FAR struct bcmf_dev_s *priv);
static int bcmf_txpoll(FAR struct net_driver_s *dev);
static void bcmf_rxpoll_work(FAR void *arg);
/* Watchdog timer expirations */
static void bcmf_poll_work(FAR void *arg);
static void bcmf_poll_expiry(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_MCASTGROUP) || defined(CONFIG_NET_ICMPv6)
static int bcmf_addmac(FAR struct net_driver_s *dev,
FAR const uint8_t *mac);
#ifdef CONFIG_NET_MCASTGROUP
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
****************************************************************************/
int bcmf_netdev_alloc_tx_frame(FAR struct bcmf_dev_s *priv)
{
if (priv->cur_tx_frame != NULL)
{
/* Frame available */
return OK;
}
/* Allocate frame for TX */
priv->cur_tx_frame = bcmf_bdc_allocate_frame(priv,
MAX_NETDEV_PKTSIZE, true);
if (!priv->cur_tx_frame)
{
wlerr("ERROR: Cannot allocate TX frame\n");
return -ENOMEM;
}
return OK;
}
/****************************************************************************
* Name: bcmf_transmit
*
* Description:
* Start hardware transmission. Called either from the txdone interrupt
* handling or from watchdog based polling.
*
* Input 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,
struct bcmf_frame_s *frame)
{
int ret;
frame->len = priv->bc_dev.d_len +
(unsigned int)(frame->data - frame->base);
ret = bcmf_bdc_transmit_frame(priv, frame);
if (ret)
{
wlerr("ERROR: Failed to transmit frame\n");
return -EIO;
}
NETDEV_TXPACKETS(&priv->bc_dev);
return OK;
}
/****************************************************************************
* Name: bcmf_receive
*
* Description:
* An interrupt was received indicating the availability of a new RX packet
*
* Input 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)
{
struct bcmf_frame_s *frame;
do
{
/* Request frame buffer from bus interface */
frame = bcmf_bdc_rx_frame(priv);
if (frame == NULL)
{
/* No more frame to process */
break;
}
if (!priv->bc_bifup)
{
/* Interface down, drop frame */
priv->bus->free_frame(priv, frame);
continue;
}
priv->bc_dev.d_buf = frame->data;
priv->bc_dev.d_len = frame->len - (frame->data - frame->base);
wlinfo("Got frame %p %d\n", frame, priv->bc_dev.d_len);
#ifdef CONFIG_NET_PKT
/* When packet sockets are enabled, feed the frame into the tap */
pkt_input(&priv->bc_dev);
#endif
/* Check if this is an 802.1Q VLAN tagged packet */
if (BUF->type == HTONS(TPID_8021QVLAN))
{
/* Need to remove the 4 octet VLAN Tag, by moving src and dest
* addresses 4 octets to the right, and then read the actual
* ethertype. The VLAN ID and priority fields are currently
* ignored.
*/
uint8_t temp_buffer[12];
memcpy(temp_buffer, frame->data, 12);
memcpy(frame->data + 4, temp_buffer, 12);
priv->bc_dev.d_buf = frame->data = frame->data + 4;
priv->bc_dev.d_len -= 4;
}
/* 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, d_len field 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, frame);
}
else
{
/* Release RX frame buffer */
priv->bus->free_frame(priv, frame);
}
}
else
#endif
#ifdef CONFIG_NET_IPv6
if (BUF->type == HTONS(ETHTYPE_IP6))
{
ninfo("IPv6 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, d_len field 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, frame);
}
else
{
/* Release RX frame buffer */
priv->bus->free_frame(priv, frame);
}
}
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, d_len field will set to a value > 0.
*/
if (priv->bc_dev.d_len > 0)
{
bcmf_transmit(priv, frame);
}
else
{
/* Release RX frame buffer */
priv->bus->free_frame(priv, frame);
}
}
else
#endif
{
/* On some routers, it may constantly receive mysterious packet...
* https://www.wireshark.org/docs/wsar_html/epan/etypes_8h.html
* for more etypes definitions.
*/
NETDEV_RXDROPPED(&priv->bc_dev);
priv->bus->free_frame(priv, frame);
}
}
while (1); /* While there are more packets to be processed */
}
/****************************************************************************
* 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 times out 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:
* 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 */
if (!devif_loopback(&priv->bc_dev))
{
/* Send the packet */
bcmf_transmit(priv, priv->cur_tx_frame);
/* TODO: Check if there is room in the device to hold another
* packet. If not, return a non-zero value to terminate the poll.
*/
priv->cur_tx_frame = NULL;
return 1;
}
}
/* If zero is returned, the polling will continue until all connections
* have been examined.
*/
return 0;
}
/****************************************************************************
* Function: bcmf_txdone_poll_work
*
* Description:
* The function is called in order to perform an out-of-sequence TX poll.
* This is done:
*
* 1. After completion of a transmission (bcmf_netdev_notify_tx_done), and
* 2. When new TX data is available (bcmf_txavail).
*
* Input Parameters:
* arg - context of device to use
*
* Returned Value:
* None
*
* Assumptions:
*
****************************************************************************/
static void bcmf_txdone_poll_work(FAR void *arg)
{
FAR struct bcmf_dev_s *priv = (FAR struct bcmf_dev_s *)arg;
/* Check if there is room in the hardware to hold another packet. */
net_lock();
if (bcmf_netdev_alloc_tx_frame(priv) == OK)
{
/* If so, then poll the network for new XMIT data */
priv->bc_dev.d_buf = priv->cur_tx_frame->data;
priv->bc_dev.d_len = 0;
devif_timer(&priv->bc_dev, 0, bcmf_txpoll);
}
net_unlock();
}
/****************************************************************************
* Name: bcmf_rxpoll_work
*
* Description:
* Process RX frames
*
* Input Parameters:
* arg - context of device to use
*
* Returned Value:
* OK on success
*
* Assumptions:
*
****************************************************************************/
static void bcmf_rxpoll_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();
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.
*/
#if 0
bcmf_txdone(priv);
#endif
net_unlock();
}
/****************************************************************************
* Name: bcmf_netdev_notify_tx_done
*
* Description:
* Notify callback called when TX frame is sent and freed.
*
* Assumptions:
*
****************************************************************************/
void bcmf_netdev_notify_tx_done(FAR struct bcmf_dev_s *priv)
{
/* Schedule to perform a poll for new Tx data the worker thread. */
if (work_available(&priv->bc_pollwork))
{
work_queue(BCMFWORK, &priv->bc_pollwork,
bcmf_txdone_poll_work, priv, 0);
}
}
/****************************************************************************
* Name: bcmf_netdev_notify_rx
*
* Description:
* Notify callback called when RX frame is available
*
* Assumptions:
*
****************************************************************************/
void bcmf_netdev_notify_rx(FAR struct bcmf_dev_s *priv)
{
/* Queue a job to process RX frames */
work_queue(BCMFWORK, &priv->bc_rxwork, bcmf_rxpoll_work, priv, 0);
}
/****************************************************************************
* Name: bcmf_poll_work
*
* Description:
* Perform periodic polling from the worker thread
*
* Input Parameters:
* arg - The argument passed when work_queue() was called.
*
* Returned Value:
* OK on success
*
* Assumptions:
*
****************************************************************************/
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 (bcmf_netdev_alloc_tx_frame(priv))
{
goto exit_unlock;
}
/* 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?
*/
priv->bc_dev.d_buf = priv->cur_tx_frame->data;
priv->bc_dev.d_len = 0;
devif_timer(&priv->bc_dev, BCMF_WDDELAY, bcmf_txpoll);
/* Setup the watchdog poll timer again */
exit_unlock:
wd_start(&priv->bc_txpoll, BCMF_WDDELAY,
bcmf_poll_expiry, (wdparm_t)priv);
net_unlock();
}
/****************************************************************************
* Name: bcmf_poll_expiry
*
* Description:
* Periodic timer handler. Called from the timer interrupt handler.
*
* Input Parameters:
* arg - The argument
*
* Returned Value:
* None
*
* Assumptions:
* Global interrupts are disabled by the watchdog logic.
*
****************************************************************************/
static void bcmf_poll_expiry(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. */
if (work_available(&priv->bc_pollwork))
{
work_queue(BCMFWORK, &priv->bc_pollwork, bcmf_poll_work, priv, 0);
}
else
{
wd_start(&priv->bc_txpoll, BCMF_WDDELAY,
bcmf_poll_expiry, (wdparm_t)priv);
}
}
/****************************************************************************
* Name: bcmf_ifup
*
* Description:
* NuttX Callback: Bring up the Ethernet interface when an IP address is
* provided
*
* Input 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",
(int)(dev->d_ipaddr & 0xff),
(int)((dev->d_ipaddr >> 8) & 0xff),
(int)((dev->d_ipaddr >> 16) & 0xff),
(int)(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
/* Instantiate 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 */
wd_start(&priv->bc_txpoll, BCMF_WDDELAY,
bcmf_poll_expiry, (wdparm_t)priv);
/* Enable the hardware interrupt */
priv->bc_bifup = true;
return OK;
}
/****************************************************************************
* Name: bcmf_ifdown
*
* Description:
* NuttX Callback: Stop the interface.
*
* Input 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 */
wd_cancel(&priv->bc_txpoll);
/* 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.
*
* 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 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 packet. */
if (bcmf_netdev_alloc_tx_frame(priv))
{
goto exit_unlock;
}
/* If so, then poll the network for new XMIT data */
priv->bc_dev.d_buf = priv->cur_tx_frame->data;
priv->bc_dev.d_len = 0;
devif_timer(&priv->bc_dev, 0, bcmf_txpoll);
}
exit_unlock:
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.
*
* Input 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
*
* Input Parameters:
* dev - Reference to the NuttX driver state structure
* mac - The MAC address to be added
*
* Returned Value:
* None
*
* Assumptions:
*
****************************************************************************/
#if defined(CONFIG_NET_MCASTGROUP) || 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
*
* 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 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.
*
* Input 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->bc_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]);
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.
*/
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.
*/
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.
*
* 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 bcmf_ioctl(FAR struct net_driver_s *dev, int cmd,
unsigned long arg)
{
int ret;
FAR struct bcmf_dev_s *priv = (FAR struct bcmf_dev_s *)dev->d_private;
/* Decode and dispatch the driver-specific IOCTL command */
switch (cmd)
{
case SIOCSIWSCAN:
ret = bcmf_wl_start_scan(priv, (struct iwreq *)arg);
break;
case SIOCGIWSCAN:
ret = bcmf_wl_get_scan_results(priv, (struct iwreq *)arg);
break;
case SIOCSIFHWADDR: /* Set device MAC address */
ret = bcmf_wl_set_mac_address(priv, (struct ifreq *)arg);
break;
case SIOCSIWAUTH:
ret = bcmf_wl_set_auth_param(priv, (struct iwreq *)arg);
break;
case SIOCSIWENCODEEXT:
ret = bcmf_wl_set_encode_ext(priv, (struct iwreq *)arg);
break;
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 */
ret = bcmf_wl_set_mode(priv, (struct iwreq *)arg);
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) */
ret = bcmf_wl_set_ssid(priv, (struct iwreq *)arg);
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", cmd);
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
*
* Input 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)
{
uint32_t out_len;
/* Initialize network driver structure */
memset(&priv->bc_dev, 0, sizeof(priv->bc_dev));
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_MCASTGROUP
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 = priv; /* Used to recover private state from dev */
/* Initialize network stack interface buffer */
priv->cur_tx_frame = NULL;
priv->bc_dev.d_buf = NULL;
/* Put the interface in the down state. This usually amounts to resetting
* the device and/or calling bcmf_ifdown().
*/
/* Enable chip */
if (bcmf_wl_enable(priv, true) != OK)
{
return -EIO;
}
/* Query MAC address */
out_len = ETHER_ADDR_LEN;
if (bcmf_cdc_iovar_request(priv, CHIP_STA_INTERFACE, false,
IOVAR_STR_CUR_ETHERADDR,
priv->bc_dev.d_mac.ether.ether_addr_octet,
&out_len) != OK)
{
return -EIO;
}
/* Register the device with the OS so that socket IOCTLs can be performed */
netdev_register(&priv->bc_dev, NET_LL_IEEE80211);
return OK;
}
#endif /* CONFIG_NET && CONFIG_IEEE80211_BROADCOM_FULLMAC */
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