/*
 * Copyright (c) 2010 Broadcom Corporation
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifdef CONFIG_WIFI_CONTROL_FUNC
#include <linux/platform_device.h>
#endif
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/kthread.h>
#include <linux/slab.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/mmc/sdio_func.h>
#include <linux/random.h>
#include <linux/spinlock.h>
#include <linux/ethtool.h>
#include <linux/fcntl.h>
#include <linux/fs.h>
#include <linux/uaccess.h>
#include <bcmdefs.h>
#include <bcmutils.h>

#include <dngl_stats.h>
#include <dhd.h>
#include <dhd_bus.h>
#include <dhd_proto.h>
#include <dhd_dbg.h>

#include <wl_cfg80211.h>

#define EPI_VERSION_STR         "4.218.248.5"
#define ETH_P_BRCM                      0x886c

#if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
#include <linux/wifi_tiwlan.h>

struct semaphore wifi_control_sem;

struct dhd_bus *g_bus;

static struct wifi_platform_data *wifi_control_data;
static struct resource *wifi_irqres;

int wifi_get_irq_number(unsigned long *irq_flags_ptr)
{
        if (wifi_irqres) {
                *irq_flags_ptr = wifi_irqres->flags & IRQF_TRIGGER_MASK;
                return (int)wifi_irqres->start;
        }
#ifdef CUSTOM_OOB_GPIO_NUM
        return CUSTOM_OOB_GPIO_NUM;
#else
        return -1;
#endif
}

int wifi_set_carddetect(int on)
{
        printk(KERN_ERR "%s = %d\n", __func__, on);
        if (wifi_control_data && wifi_control_data->set_carddetect)
                wifi_control_data->set_carddetect(on);
        return 0;
}

int wifi_set_power(int on, unsigned long msec)
{
        printk(KERN_ERR "%s = %d\n", __func__, on);
        if (wifi_control_data && wifi_control_data->set_power)
                wifi_control_data->set_power(on);
        if (msec)
                mdelay(msec);
        return 0;
}

int wifi_set_reset(int on, unsigned long msec)
{
        printk(KERN_ERR "%s = %d\n", __func__, on);
        if (wifi_control_data && wifi_control_data->set_reset)
                wifi_control_data->set_reset(on);
        if (msec)
                mdelay(msec);
        return 0;
}

static int wifi_probe(struct platform_device *pdev)
{
        struct wifi_platform_data *wifi_ctrl =
            (struct wifi_platform_data *)(pdev->dev.platform_data);

        printk(KERN_ERR "## %s\n", __func__);
        wifi_irqres =
            platform_get_resource_byname(pdev, IORESOURCE_IRQ,
                                         "bcm4329_wlan_irq");
        wifi_control_data = wifi_ctrl;

        wifi_set_power(1, 0);   /* Power On */
        wifi_set_carddetect(1); /* CardDetect (0->1) */

        up(&wifi_control_sem);
        return 0;
}

static int wifi_remove(struct platform_device *pdev)
{
        struct wifi_platform_data *wifi_ctrl =
            (struct wifi_platform_data *)(pdev->dev.platform_data);

        printk(KERN_ERR "## %s\n", __func__);
        wifi_control_data = wifi_ctrl;

        wifi_set_carddetect(0); /* CardDetect (1->0) */
        wifi_set_power(0, 0);   /* Power Off */

        up(&wifi_control_sem);
        return 0;
}

static int wifi_suspend(struct platform_device *pdev, pm_message_t state)
{
        DHD_TRACE(("##> %s\n", __func__));
        return 0;
}

static int wifi_resume(struct platform_device *pdev)
{
        DHD_TRACE(("##> %s\n", __func__));
        return 0;
}

static struct platform_driver wifi_device = {
        .probe = wifi_probe,
        .remove = wifi_remove,
        .suspend = wifi_suspend,
        .resume = wifi_resume,
        .driver = {
                   .name = KBUILD_MODNAME,
                   }
};

int wifi_add_dev(void)
{
        DHD_TRACE(("## Calling platform_driver_register\n"));
        return platform_driver_register(&wifi_device);
}

void wifi_del_dev(void)
{
        DHD_TRACE(("## Unregister platform_driver_register\n"));
        platform_driver_unregister(&wifi_device);
}
#endif  /* defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC) */

#if defined(CONFIG_PM_SLEEP)
#include <linux/suspend.h>
atomic_t dhd_mmc_suspend;
DECLARE_WAIT_QUEUE_HEAD(dhd_dpc_wait);
#endif  /*  defined(CONFIG_PM_SLEEP) */

#if defined(OOB_INTR_ONLY)
extern void dhd_enable_oob_intr(struct dhd_bus *bus, bool enable);
#endif  /* defined(OOB_INTR_ONLY) */

MODULE_AUTHOR("Broadcom Corporation");
MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN fullmac driver.");
MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN fullmac cards");
MODULE_LICENSE("Dual BSD/GPL");

#define DRV_MODULE_NAME "brcmfmac"

/* Linux wireless extension support */
#if defined(CONFIG_WIRELESS_EXT)
#include <wl_iw.h>
extern wl_iw_extra_params_t g_wl_iw_params;
#endif          /* defined(CONFIG_WIRELESS_EXT) */

#if defined(CONFIG_HAS_EARLYSUSPEND)
#include <linux/earlysuspend.h>
extern int dhdcdc_set_ioctl(dhd_pub_t *dhd, int ifidx, uint cmd, void *buf,
                            uint len);
#endif          /* defined(CONFIG_HAS_EARLYSUSPEND) */

#ifdef PKT_FILTER_SUPPORT
extern void dhd_pktfilter_offload_set(dhd_pub_t *dhd, char *arg);
extern void dhd_pktfilter_offload_enable(dhd_pub_t *dhd, char *arg, int enable,
                                         int master_mode);
#endif

/* Interface control information */
typedef struct dhd_if {
        struct dhd_info *info;  /* back pointer to dhd_info */
        /* OS/stack specifics */
        struct net_device *net;
        struct net_device_stats stats;
        int idx;                /* iface idx in dongle */
        int state;              /* interface state */
        uint subunit;           /* subunit */
        u8 mac_addr[ETH_ALEN];  /* assigned MAC address */
        bool attached;          /* Delayed attachment when unset */
        bool txflowcontrol;     /* Per interface flow control indicator */
        char name[IFNAMSIZ];    /* linux interface name */
} dhd_if_t;

/* Local private structure (extension of pub) */
typedef struct dhd_info {
#if defined(CONFIG_WIRELESS_EXT)
        wl_iw_t iw;             /* wireless extensions state (must be first) */
#endif                          /* defined(CONFIG_WIRELESS_EXT) */

        dhd_pub_t pub;

        /* OS/stack specifics */
        dhd_if_t *iflist[DHD_MAX_IFS];

        struct semaphore proto_sem;
        wait_queue_head_t ioctl_resp_wait;
        struct timer_list timer;
        bool wd_timer_valid;
        struct tasklet_struct tasklet;
        spinlock_t sdlock;
        spinlock_t txqlock;
        /* Thread based operation */
        bool threads_only;
        struct semaphore sdsem;
        struct task_struct *watchdog_tsk;
        struct semaphore watchdog_sem;
        struct task_struct *dpc_tsk;
        struct semaphore dpc_sem;

        /* Thread to issue ioctl for multicast */
        struct task_struct *sysioc_tsk;
        struct semaphore sysioc_sem;
        bool set_multicast;
        bool set_macaddress;
        u8 macvalue[ETH_ALEN];
        wait_queue_head_t ctrl_wait;
        atomic_t pend_8021x_cnt;

#ifdef CONFIG_HAS_EARLYSUSPEND
        struct early_suspend early_suspend;
#endif                          /* CONFIG_HAS_EARLYSUSPEND */
} dhd_info_t;

/* Definitions to provide path to the firmware and nvram
 * example nvram_path[MOD_PARAM_PATHLEN]="/projects/wlan/nvram.txt"
 */
char firmware_path[MOD_PARAM_PATHLEN];
char nvram_path[MOD_PARAM_PATHLEN];

/* load firmware and/or nvram values from the filesystem */
module_param_string(firmware_path, firmware_path, MOD_PARAM_PATHLEN, 0);
module_param_string(nvram_path, nvram_path, MOD_PARAM_PATHLEN, 0);

/* Error bits */
module_param(dhd_msg_level, int, 0);

/* Spawn a thread for system ioctls (set mac, set mcast) */
uint dhd_sysioc = true;
module_param(dhd_sysioc, uint, 0);

/* Watchdog interval */
uint dhd_watchdog_ms = 10;
module_param(dhd_watchdog_ms, uint, 0);

#ifdef DHD_DEBUG
/* Console poll interval */
uint dhd_console_ms;
module_param(dhd_console_ms, uint, 0);
#endif                          /* DHD_DEBUG */

/* ARP offload agent mode : Enable ARP Host Auto-Reply
and ARP Peer Auto-Reply */
uint dhd_arp_mode = 0xb;
module_param(dhd_arp_mode, uint, 0);

/* ARP offload enable */
uint dhd_arp_enable = true;
module_param(dhd_arp_enable, uint, 0);

/* Global Pkt filter enable control */
uint dhd_pkt_filter_enable = true;
module_param(dhd_pkt_filter_enable, uint, 0);

/*  Pkt filter init setup */
uint dhd_pkt_filter_init;
module_param(dhd_pkt_filter_init, uint, 0);

/* Pkt filter mode control */
uint dhd_master_mode = true;
module_param(dhd_master_mode, uint, 1);

/* Watchdog thread priority, -1 to use kernel timer */
int dhd_watchdog_prio = 97;
module_param(dhd_watchdog_prio, int, 0);

/* DPC thread priority, -1 to use tasklet */
int dhd_dpc_prio = 98;
module_param(dhd_dpc_prio, int, 0);

/* DPC thread priority, -1 to use tasklet */
extern int dhd_dongle_memsize;
module_param(dhd_dongle_memsize, int, 0);

/* Contorl fw roaming */
#ifdef CUSTOMER_HW2
uint dhd_roam;
#else
uint dhd_roam = 1;
#endif

/* Control radio state */
uint dhd_radio_up = 1;

/* Network inteface name */
char iface_name[IFNAMSIZ] = "wlan";
module_param_string(iface_name, iface_name, IFNAMSIZ, 0);

/* The following are specific to the SDIO dongle */

/* IOCTL response timeout */
int dhd_ioctl_timeout_msec = IOCTL_RESP_TIMEOUT;

/* Idle timeout for backplane clock */
int dhd_idletime = DHD_IDLETIME_TICKS;
module_param(dhd_idletime, int, 0);

/* Use polling */
uint dhd_poll = false;
module_param(dhd_poll, uint, 0);

/* Use cfg80211 */
uint dhd_cfg80211 = true;
module_param(dhd_cfg80211, uint, 0);

/* Use interrupts */
uint dhd_intr = true;
module_param(dhd_intr, uint, 0);

/* SDIO Drive Strength (in milliamps) */
uint dhd_sdiod_drive_strength = 6;
module_param(dhd_sdiod_drive_strength, uint, 0);

/* Tx/Rx bounds */
extern uint dhd_txbound;
extern uint dhd_rxbound;
module_param(dhd_txbound, uint, 0);
module_param(dhd_rxbound, uint, 0);

/* Deferred transmits */
extern uint dhd_deferred_tx;
module_param(dhd_deferred_tx, uint, 0);

#ifdef SDTEST
/* Echo packet generator (pkts/s) */
uint dhd_pktgen;
module_param(dhd_pktgen, uint, 0);

/* Echo packet len (0 => sawtooth, max 2040) */
uint dhd_pktgen_len;
module_param(dhd_pktgen_len, uint, 0);
#endif

#define FAVORITE_WIFI_CP        (!!dhd_cfg80211)
#define IS_CFG80211_FAVORITE() FAVORITE_WIFI_CP
#define DBG_CFG80211_GET() ((dhd_cfg80211 & WL_DBG_MASK) >> 1)
#define NO_FW_REQ() (dhd_cfg80211 & 0x80)

/* Version string to report */
#ifdef DHD_DEBUG
#define DHD_COMPILED "\nCompiled in " SRCBASE
#else
#define DHD_COMPILED
#endif

static void dhd_dpc(unsigned long data);
/* forward decl */
extern int dhd_wait_pend8021x(struct net_device *dev);

#ifdef TOE
#ifndef BDC
#error TOE requires BDC
#endif                          /* !BDC */
static int dhd_toe_get(dhd_info_t *dhd, int idx, u32 *toe_ol);
static int dhd_toe_set(dhd_info_t *dhd, int idx, u32 toe_ol);
#endif                          /* TOE */

static int dhd_wl_host_event(dhd_info_t *dhd, int *ifidx, void *pktdata,
                             wl_event_msg_t *event_ptr, void **data_ptr);

#if defined(CONFIG_PM_SLEEP)
static int dhd_sleep_pm_callback(struct notifier_block *nfb,
                                 unsigned long action, void *ignored)
{
        switch (action) {
        case PM_HIBERNATION_PREPARE:
        case PM_SUSPEND_PREPARE:
                atomic_set(&dhd_mmc_suspend, true);
                return NOTIFY_OK;
        case PM_POST_HIBERNATION:
        case PM_POST_SUSPEND:
                atomic_set(&dhd_mmc_suspend, false);
                return NOTIFY_OK;
        }
        return 0;
}

static struct notifier_block dhd_sleep_pm_notifier = {
        .notifier_call = dhd_sleep_pm_callback,
        .priority = 0
};

extern int register_pm_notifier(struct notifier_block *nb);
extern int unregister_pm_notifier(struct notifier_block *nb);
#endif  /* defined(CONFIG_PM_SLEEP) */
        /* && defined(DHD_GPL) */
static void dhd_set_packet_filter(int value, dhd_pub_t *dhd)
{
#ifdef PKT_FILTER_SUPPORT
        DHD_TRACE(("%s: %d\n", __func__, value));
        /* 1 - Enable packet filter, only allow unicast packet to send up */
        /* 0 - Disable packet filter */
        if (dhd_pkt_filter_enable) {
                int i;

                for (i = 0; i < dhd->pktfilter_count; i++) {
                        dhd_pktfilter_offload_set(dhd, dhd->pktfilter[i]);
                        dhd_pktfilter_offload_enable(dhd, dhd->pktfilter[i],
                                                     value, dhd_master_mode);
                }
        }
#endif
}

#if defined(CONFIG_HAS_EARLYSUSPEND)
static int dhd_set_suspend(int value, dhd_pub_t *dhd)
{
        int power_mode = PM_MAX;
        /* wl_pkt_filter_enable_t       enable_parm; */
        char iovbuf[32];
        int bcn_li_dtim = 3;
#ifdef CUSTOMER_HW2
        uint roamvar = 1;
#endif                          /* CUSTOMER_HW2 */

        DHD_TRACE(("%s: enter, value = %d in_suspend=%d\n",
                   __func__, value, dhd->in_suspend));

        if (dhd && dhd->up) {
                if (value && dhd->in_suspend) {

                        /* Kernel suspended */
                        DHD_TRACE(("%s: force extra Suspend setting\n",
                                   __func__));

                        dhdcdc_set_ioctl(dhd, 0, WLC_SET_PM,
                                         (char *)&power_mode,
                                         sizeof(power_mode));

                        /* Enable packet filter, only allow unicast
                                 packet to send up */
                        dhd_set_packet_filter(1, dhd);

                        /* if dtim skip setup as default force it
                         * to wake each third dtim
                         * for better power saving.
                         * Note that side effect is chance to miss BC/MC
                         * packet
                         */
                        if ((dhd->dtim_skip == 0) || (dhd->dtim_skip == 1))
                                bcn_li_dtim = 3;
                        else
                                bcn_li_dtim = dhd->dtim_skip;
                        bcm_mkiovar("bcn_li_dtim", (char *)&bcn_li_dtim,
                                    4, iovbuf, sizeof(iovbuf));
                        dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
                                         sizeof(iovbuf));
#ifdef CUSTOMER_HW2
                        /* Disable build-in roaming to allowed \
                         * supplicant to take of romaing
                         */
                        bcm_mkiovar("roam_off", (char *)&roamvar, 4,
                                    iovbuf, sizeof(iovbuf));
                        dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
                                         sizeof(iovbuf));
#endif                          /* CUSTOMER_HW2 */
                } else {

                        /* Kernel resumed  */
                        DHD_TRACE(("%s: Remove extra suspend setting\n",
                                   __func__));

                        power_mode = PM_FAST;
                        dhdcdc_set_ioctl(dhd, 0, WLC_SET_PM,
                                         (char *)&power_mode,
                                         sizeof(power_mode));

                        /* disable pkt filter */
                        dhd_set_packet_filter(0, dhd);

                        /* restore pre-suspend setting for dtim_skip */
                        bcm_mkiovar("bcn_li_dtim", (char *)&dhd->dtim_skip,
                                    4, iovbuf, sizeof(iovbuf));

                        dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
                                         sizeof(iovbuf));
#ifdef CUSTOMER_HW2
                        roamvar = 0;
                        bcm_mkiovar("roam_off", (char *)&roamvar, 4, iovbuf,
                                    sizeof(iovbuf));
                        dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
                                         sizeof(iovbuf));
#endif                          /* CUSTOMER_HW2 */
                }
        }

        return 0;
}

static void dhd_suspend_resume_helper(struct dhd_info *dhd, int val)
{
        dhd_pub_t *dhdp = &dhd->pub;

        dhd_os_proto_block(dhdp);
        /* Set flag when early suspend was called */
        dhdp->in_suspend = val;
        if (!dhdp->suspend_disable_flag)
                dhd_set_suspend(val, dhdp);
        dhd_os_proto_unblock(dhdp);
}

static void dhd_early_suspend(struct early_suspend *h)
{
        struct dhd_info *dhd = container_of(h, struct dhd_info, early_suspend);

        DHD_TRACE(("%s: enter\n", __func__));

        if (dhd)
                dhd_suspend_resume_helper(dhd, 1);

}

static void dhd_late_resume(struct early_suspend *h)
{
        struct dhd_info *dhd = container_of(h, struct dhd_info, early_suspend);

        DHD_TRACE(("%s: enter\n", __func__));

        if (dhd)
                dhd_suspend_resume_helper(dhd, 0);
}
#endif                          /* defined(CONFIG_HAS_EARLYSUSPEND) */

/*
 * Generalized timeout mechanism.  Uses spin sleep with exponential
 * back-off until
 * the sleep time reaches one jiffy, then switches over to task delay.  Usage:
 *
 *      dhd_timeout_start(&tmo, usec);
 *      while (!dhd_timeout_expired(&tmo))
 *              if (poll_something())
 *                      break;
 *      if (dhd_timeout_expired(&tmo))
 *              fatal();
 */

void dhd_timeout_start(dhd_timeout_t *tmo, uint usec)
{
        tmo->limit = usec;
        tmo->increment = 0;
        tmo->elapsed = 0;
        tmo->tick = 1000000 / HZ;
}

int dhd_timeout_expired(dhd_timeout_t *tmo)
{
        /* Does nothing the first call */
        if (tmo->increment == 0) {
                tmo->increment = 1;
                return 0;
        }

        if (tmo->elapsed >= tmo->limit)
                return 1;

        /* Add the delay that's about to take place */
        tmo->elapsed += tmo->increment;

        if (tmo->increment < tmo->tick) {
                udelay(tmo->increment);
                tmo->increment *= 2;
                if (tmo->increment > tmo->tick)
                        tmo->increment = tmo->tick;
        } else {
                wait_queue_head_t delay_wait;
                DECLARE_WAITQUEUE(wait, current);
                int pending;
                init_waitqueue_head(&delay_wait);
                add_wait_queue(&delay_wait, &wait);
                set_current_state(TASK_INTERRUPTIBLE);
                schedule_timeout(1);
                pending = signal_pending(current);
                remove_wait_queue(&delay_wait, &wait);
                set_current_state(TASK_RUNNING);
                if (pending)
                        return 1;       /* Interrupted */
        }

        return 0;
}

static int dhd_net2idx(dhd_info_t *dhd, struct net_device *net)
{
        int i = 0;

        ASSERT(dhd);
        while (i < DHD_MAX_IFS) {
                if (dhd->iflist[i] && (dhd->iflist[i]->net == net))
                        return i;
                i++;
        }

        return DHD_BAD_IF;
}

int dhd_ifname2idx(dhd_info_t *dhd, char *name)
{
        int i = DHD_MAX_IFS;

        ASSERT(dhd);

        if (name == NULL || *name == '\0')
                return 0;

        while (--i > 0)
                if (dhd->iflist[i]
                    && !strncmp(dhd->iflist[i]->name, name, IFNAMSIZ))
                        break;

        DHD_TRACE(("%s: return idx %d for \"%s\"\n", __func__, i, name));

        return i;               /* default - the primary interface */
}

char *dhd_ifname(dhd_pub_t *dhdp, int ifidx)
{
        dhd_info_t *dhd = (dhd_info_t *) dhdp->info;

        ASSERT(dhd);

        if (ifidx < 0 || ifidx >= DHD_MAX_IFS) {
                DHD_ERROR(("%s: ifidx %d out of range\n", __func__, ifidx));
                return "<if_bad>";
        }

        if (dhd->iflist[ifidx] == NULL) {
                DHD_ERROR(("%s: null i/f %d\n", __func__, ifidx));
                return "<if_null>";
        }

        if (dhd->iflist[ifidx]->net)
                return dhd->iflist[ifidx]->net->name;

        return "<if_none>";
}

static void _dhd_set_multicast_list(dhd_info_t *dhd, int ifidx)
{
        struct net_device *dev;
        struct netdev_hw_addr *ha;
        u32 allmulti, cnt;

        wl_ioctl_t ioc;
        char *buf, *bufp;
        uint buflen;
        int ret;

        ASSERT(dhd && dhd->iflist[ifidx]);
        dev = dhd->iflist[ifidx]->net;
        cnt = netdev_mc_count(dev);

        /* Determine initial value of allmulti flag */
        allmulti = (dev->flags & IFF_ALLMULTI) ? true : false;

        /* Send down the multicast list first. */

        buflen = sizeof("mcast_list") + sizeof(cnt) + (cnt * ETH_ALEN);
        bufp = buf = kmalloc(buflen, GFP_ATOMIC);
        if (!bufp) {
                DHD_ERROR(("%s: out of memory for mcast_list, cnt %d\n",
                           dhd_ifname(&dhd->pub, ifidx), cnt));
                return;
        }

        strcpy(bufp, "mcast_list");
        bufp += strlen("mcast_list") + 1;

        cnt = cpu_to_le32(cnt);
        memcpy(bufp, &cnt, sizeof(cnt));
        bufp += sizeof(cnt);

        netdev_for_each_mc_addr(ha, dev) {
                if (!cnt)
                        break;
                memcpy(bufp, ha->addr, ETH_ALEN);
                bufp += ETH_ALEN;
                cnt--;
        }

        memset(&ioc, 0, sizeof(ioc));
        ioc.cmd = WLC_SET_VAR;
        ioc.buf = buf;
        ioc.len = buflen;
        ioc.set = true;

        ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
        if (ret < 0) {
                DHD_ERROR(("%s: set mcast_list failed, cnt %d\n",
                           dhd_ifname(&dhd->pub, ifidx), cnt));
                allmulti = cnt ? true : allmulti;
        }

        kfree(buf);

        /* Now send the allmulti setting.  This is based on the setting in the
         * net_device flags, but might be modified above to be turned on if we
         * were trying to set some addresses and dongle rejected it...
         */

        buflen = sizeof("allmulti") + sizeof(allmulti);
        buf = kmalloc(buflen, GFP_ATOMIC);
        if (!buf) {
                DHD_ERROR(("%s: out of memory for allmulti\n",
                           dhd_ifname(&dhd->pub, ifidx)));
                return;
        }
        allmulti = cpu_to_le32(allmulti);

        if (!bcm_mkiovar
            ("allmulti", (void *)&allmulti, sizeof(allmulti), buf, buflen)) {
                DHD_ERROR(("%s: mkiovar failed for allmulti, datalen %d "
                        "buflen %u\n", dhd_ifname(&dhd->pub, ifidx),
                        (int)sizeof(allmulti), buflen));
                kfree(buf);
                return;
        }

        memset(&ioc, 0, sizeof(ioc));
        ioc.cmd = WLC_SET_VAR;
        ioc.buf = buf;
        ioc.len = buflen;
        ioc.set = true;

        ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
        if (ret < 0) {
                DHD_ERROR(("%s: set allmulti %d failed\n",
                           dhd_ifname(&dhd->pub, ifidx),
                           le32_to_cpu(allmulti)));
        }

        kfree(buf);

        /* Finally, pick up the PROMISC flag as well, like the NIC
                 driver does */

        allmulti = (dev->flags & IFF_PROMISC) ? true : false;
        allmulti = cpu_to_le32(allmulti);

        memset(&ioc, 0, sizeof(ioc));
        ioc.cmd = WLC_SET_PROMISC;
        ioc.buf = &allmulti;
        ioc.len = sizeof(allmulti);
        ioc.set = true;

        ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
        if (ret < 0) {
                DHD_ERROR(("%s: set promisc %d failed\n",
                           dhd_ifname(&dhd->pub, ifidx),
                           le32_to_cpu(allmulti)));
        }
}

static int
_dhd_set_mac_address(dhd_info_t *dhd, int ifidx, u8 *addr)
{
        char buf[32];
        wl_ioctl_t ioc;
        int ret;

        DHD_TRACE(("%s enter\n", __func__));
        if (!bcm_mkiovar
            ("cur_etheraddr", (char *)addr, ETH_ALEN, buf, 32)) {
                DHD_ERROR(("%s: mkiovar failed for cur_etheraddr\n",
                           dhd_ifname(&dhd->pub, ifidx)));
                return -1;
        }
        memset(&ioc, 0, sizeof(ioc));
        ioc.cmd = WLC_SET_VAR;
        ioc.buf = buf;
        ioc.len = 32;
        ioc.set = true;

        ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
        if (ret < 0) {
                DHD_ERROR(("%s: set cur_etheraddr failed\n",
                           dhd_ifname(&dhd->pub, ifidx)));
        } else {
                memcpy(dhd->iflist[ifidx]->net->dev_addr, addr, ETH_ALEN);
        }

        return ret;
}

#ifdef SOFTAP
extern struct net_device *ap_net_dev;
#endif

static void dhd_op_if(dhd_if_t *ifp)
{
        dhd_info_t *dhd;
        int ret = 0, err = 0;

        ASSERT(ifp && ifp->info && ifp->idx);   /* Virtual interfaces only */

        dhd = ifp->info;

        DHD_TRACE(("%s: idx %d, state %d\n", __func__, ifp->idx, ifp->state));

        switch (ifp->state) {
        case WLC_E_IF_ADD:
                /*
                 * Delete the existing interface before overwriting it
                 * in case we missed the WLC_E_IF_DEL event.
                 */
                if (ifp->net != NULL) {
                        DHD_ERROR(("%s: ERROR: netdev:%s already exists, "
                        "try free & unregister\n",
                        __func__, ifp->net->name));
                        netif_stop_queue(ifp->net);
                        unregister_netdev(ifp->net);
                        free_netdev(ifp->net);
                }
                /* Allocate etherdev, including space for private structure */
                ifp->net = alloc_etherdev(sizeof(dhd));
                if (!ifp->net) {
                        DHD_ERROR(("%s: OOM - alloc_etherdev\n", __func__));
                        ret = -ENOMEM;
                }
                if (ret == 0) {
                        strcpy(ifp->net->name, ifp->name);
                        memcpy(netdev_priv(ifp->net), &dhd, sizeof(dhd));
                        err = dhd_net_attach(&dhd->pub, ifp->idx);
                        if (err != 0) {
                                DHD_ERROR(("%s: dhd_net_attach failed, "
                                        "err %d\n",
                                        __func__, err));
                                ret = -EOPNOTSUPP;
                        } else {
#ifdef SOFTAP
                                /* semaphore that the soft AP CODE
                                         waits on */
                                extern struct semaphore ap_eth_sema;

                                /* save ptr to wl0.1 netdev for use
                                         in wl_iw.c  */
                                ap_net_dev = ifp->net;
                                /* signal to the SOFTAP 'sleeper' thread,
                                         wl0.1 is ready */
                                up(&ap_eth_sema);
#endif
                                DHD_TRACE(("\n ==== pid:%x, net_device for "
                                        "if:%s created ===\n\n",
                                        current->pid, ifp->net->name));
                                ifp->state = 0;
                        }
                }
                break;
        case WLC_E_IF_DEL:
                if (ifp->net != NULL) {
                        DHD_TRACE(("\n%s: got 'WLC_E_IF_DEL' state\n",
                                   __func__));
                        netif_stop_queue(ifp->net);
                        unregister_netdev(ifp->net);
                        ret = DHD_DEL_IF;       /* Make sure the free_netdev()
                                                         is called */
                }
                break;
        default:
                DHD_ERROR(("%s: bad op %d\n", __func__, ifp->state));
                ASSERT(!ifp->state);
                break;
        }

        if (ret < 0) {
                if (ifp->net)
                        free_netdev(ifp->net);

                dhd->iflist[ifp->idx] = NULL;
                kfree(ifp);
#ifdef SOFTAP
                if (ifp->net == ap_net_dev)
                        ap_net_dev = NULL;      /*  NULL  SOFTAP global
                                                         wl0.1 as well */
#endif                          /*  SOFTAP */
        }
}

static int _dhd_sysioc_thread(void *data)
{
        dhd_info_t *dhd = (dhd_info_t *) data;
        int i;
#ifdef SOFTAP
        bool in_ap = false;
#endif

        allow_signal(SIGTERM);

        while (down_interruptible(&dhd->sysioc_sem) == 0) {
                if (kthread_should_stop())
                        break;
                for (i = 0; i < DHD_MAX_IFS; i++) {
                        if (dhd->iflist[i]) {
#ifdef SOFTAP
                                in_ap = (ap_net_dev != NULL);
#endif                          /* SOFTAP */
                                if (dhd->iflist[i]->state)
                                        dhd_op_if(dhd->iflist[i]);
#ifdef SOFTAP
                                if (dhd->iflist[i] == NULL) {
                                        DHD_TRACE(("\n\n %s: interface %d "
                                                "removed!\n", __func__, i));
                                        continue;
                                }

                                if (in_ap && dhd->set_macaddress) {
                                        DHD_TRACE(("attempt to set MAC for %s "
                                                "in AP Mode," "blocked. \n",
                                                dhd->iflist[i]->net->name));
                                        dhd->set_macaddress = false;
                                        continue;
                                }

                                if (in_ap && dhd->set_multicast) {
                                        DHD_TRACE(("attempt to set MULTICAST list for %s" "in AP Mode, blocked. \n",
                                                dhd->iflist[i]->net->name));
                                        dhd->set_multicast = false;
                                        continue;
                                }
#endif                          /* SOFTAP */
                                if (dhd->set_multicast) {
                                        dhd->set_multicast = false;
                                        _dhd_set_multicast_list(dhd, i);
                                }
                                if (dhd->set_macaddress) {
                                        dhd->set_macaddress = false;
                                        _dhd_set_mac_address(dhd, i,
                                                             dhd->macvalue);
                                }
                        }
                }
        }
        return 0;
}

static int dhd_set_mac_address(struct net_device *dev, void *addr)
{
        int ret = 0;

        dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
        struct sockaddr *sa = (struct sockaddr *)addr;
        int ifidx;

        ifidx = dhd_net2idx(dhd, dev);
        if (ifidx == DHD_BAD_IF)
                return -1;

        ASSERT(dhd->sysioc_tsk);
        memcpy(&dhd->macvalue, sa->sa_data, ETH_ALEN);
        dhd->set_macaddress = true;
        up(&dhd->sysioc_sem);

        return ret;
}

static void dhd_set_multicast_list(struct net_device *dev)
{
        dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
        int ifidx;

        ifidx = dhd_net2idx(dhd, dev);
        if (ifidx == DHD_BAD_IF)
                return;

        ASSERT(dhd->sysioc_tsk);
        dhd->set_multicast = true;
        up(&dhd->sysioc_sem);
}

int dhd_sendpkt(dhd_pub_t *dhdp, int ifidx, struct sk_buff *pktbuf)
{
        int ret;
        dhd_info_t *dhd = (dhd_info_t *) (dhdp->info);

        /* Reject if down */
        if (!dhdp->up || (dhdp->busstate == DHD_BUS_DOWN))
                return -ENODEV;

        /* Update multicast statistic */
        if (pktbuf->len >= ETH_ALEN) {
                u8 *pktdata = (u8 *) (pktbuf->data);
                struct ethhdr *eh = (struct ethhdr *)pktdata;

                if (is_multicast_ether_addr(eh->h_dest))
                        dhdp->tx_multicast++;
                if (ntohs(eh->h_proto) == ETH_P_PAE)
                        atomic_inc(&dhd->pend_8021x_cnt);
        }

        /* If the protocol uses a data header, apply it */
        dhd_prot_hdrpush(dhdp, ifidx, pktbuf);

        /* Use bus module to send data frame */
#ifdef BCMDBUS
        ret = dbus_send_pkt(dhdp->dbus, pktbuf, NULL /* pktinfo */);
#else
        ret = dhd_bus_txdata(dhdp->bus, pktbuf);
#endif                          /* BCMDBUS */

        return ret;
}

static inline void *
osl_pkt_frmnative(struct sk_buff *skb)
{
        return (void *)skb;
}
#define PKTFRMNATIVE(osh, skb)  \
        osl_pkt_frmnative((struct sk_buff *)(skb))

static inline struct sk_buff *
osl_pkt_tonative(void *pkt)
{
        return (struct sk_buff *)pkt;
}
#define PKTTONATIVE(osh, pkt)   \
        osl_pkt_tonative((pkt))

static int dhd_start_xmit(struct sk_buff *skb, struct net_device *net)
{
        int ret;
        void *pktbuf;
        dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
        int ifidx;

        DHD_TRACE(("%s: Enter\n", __func__));

        /* Reject if down */
        if (!dhd->pub.up || (dhd->pub.busstate == DHD_BUS_DOWN)) {
                DHD_ERROR(("%s: xmit rejected pub.up=%d busstate=%d\n",
                           __func__, dhd->pub.up, dhd->pub.busstate));
                netif_stop_queue(net);
                return -ENODEV;
        }

        ifidx = dhd_net2idx(dhd, net);
        if (ifidx == DHD_BAD_IF) {
                DHD_ERROR(("%s: bad ifidx %d\n", __func__, ifidx));
                netif_stop_queue(net);
                return -ENODEV;
        }

        /* Make sure there's enough room for any header */
        if (skb_headroom(skb) < dhd->pub.hdrlen) {
                struct sk_buff *skb2;

                DHD_INFO(("%s: insufficient headroom\n",
                          dhd_ifname(&dhd->pub, ifidx)));
                dhd->pub.tx_realloc++;
                skb2 = skb_realloc_headroom(skb, dhd->pub.hdrlen);
                dev_kfree_skb(skb);
                skb = skb2;
                if (skb == NULL) {
                        DHD_ERROR(("%s: skb_realloc_headroom failed\n",
                                   dhd_ifname(&dhd->pub, ifidx)));
                        ret = -ENOMEM;
                        goto done;
                }
        }

        /* Convert to packet */
        pktbuf = PKTFRMNATIVE(dhd->pub.osh, skb);
        if (!pktbuf) {
                DHD_ERROR(("%s: PKTFRMNATIVE failed\n",
                           dhd_ifname(&dhd->pub, ifidx)));
                dev_kfree_skb_any(skb);
                ret = -ENOMEM;
                goto done;
        }

        ret = dhd_sendpkt(&dhd->pub, ifidx, pktbuf);

done:
        if (ret)
                dhd->pub.dstats.tx_dropped++;
        else
                dhd->pub.tx_packets++;

        /* Return ok: we always eat the packet */
        return 0;
}

void dhd_txflowcontrol(dhd_pub_t *dhdp, int ifidx, bool state)
{
        struct net_device *net;
        dhd_info_t *dhd = dhdp->info;

        DHD_TRACE(("%s: Enter\n", __func__));

        dhdp->txoff = state;
        ASSERT(dhd && dhd->iflist[ifidx]);
        net = dhd->iflist[ifidx]->net;
        if (state == ON)
                netif_stop_queue(net);
        else
                netif_wake_queue(net);
}

void dhd_rx_frame(dhd_pub_t *dhdp, int ifidx, struct sk_buff *pktbuf,
                  int numpkt)
{
        dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
        struct sk_buff *skb;
        unsigned char *eth;
        uint len;
        void *data;
        struct sk_buff *pnext, *save_pktbuf;
        int i;
        dhd_if_t *ifp;
        wl_event_msg_t event;

        DHD_TRACE(("%s: Enter\n", __func__));

        save_pktbuf = pktbuf;

        for (i = 0; pktbuf && i < numpkt; i++, pktbuf = pnext) {

                pnext = pktbuf->next;
                pktbuf->next = NULL;

                skb = PKTTONATIVE(dhdp->osh, pktbuf);

                /* Get the protocol, maintain skb around eth_type_trans()
                 * The main reason for this hack is for the limitation of
                 * Linux 2.4 where 'eth_type_trans' uses the
                 * 'net->hard_header_len'
                 * to perform skb_pull inside vs ETH_HLEN. Since to avoid
                 * coping of the packet coming from the network stack to add
                 * BDC, Hardware header etc, during network interface
                 * registration
                 * we set the 'net->hard_header_len' to ETH_HLEN + extra space
                 * required
                 * for BDC, Hardware header etc. and not just the ETH_HLEN
                 */
                eth = skb->data;
                len = skb->len;

                ifp = dhd->iflist[ifidx];
                if (ifp == NULL)
                        ifp = dhd->iflist[0];

                ASSERT(ifp);
                skb->dev = ifp->net;
                skb->protocol = eth_type_trans(skb, skb->dev);

                if (skb->pkt_type == PACKET_MULTICAST)
                        dhd->pub.rx_multicast++;

                skb->data = eth;
                skb->len = len;

                /* Strip header, count, deliver upward */
                skb_pull(skb, ETH_HLEN);

                /* Process special event packets and then discard them */
                if (ntohs(skb->protocol) == ETH_P_BRCM)
                        dhd_wl_host_event(dhd, &ifidx,
                                          skb_mac_header(skb),
                                          &event, &data);

                ASSERT(ifidx < DHD_MAX_IFS && dhd->iflist[ifidx]);
                if (dhd->iflist[ifidx] && !dhd->iflist[ifidx]->state)
                        ifp = dhd->iflist[ifidx];

                if (ifp->net)
                        ifp->net->last_rx = jiffies;

                dhdp->dstats.rx_bytes += skb->len;
                dhdp->rx_packets++;     /* Local count */

                if (in_interrupt()) {
                        netif_rx(skb);
                } else {
                        /* If the receive is not processed inside an ISR,
                         * the softirqd must be woken explicitly to service
                         * the NET_RX_SOFTIRQ.  In 2.6 kernels, this is handled
                         * by netif_rx_ni(), but in earlier kernels, we need
                         * to do it manually.
                         */
                        netif_rx_ni(skb);
                }
        }
}

void dhd_event(struct dhd_info *dhd, char *evpkt, int evlen, int ifidx)
{
        /* Linux version has nothing to do */
        return;
}

void dhd_txcomplete(dhd_pub_t *dhdp, struct sk_buff *txp, bool success)
{
        uint ifidx;
        dhd_info_t *dhd = (dhd_info_t *) (dhdp->info);
        struct ethhdr *eh;
        u16 type;

        dhd_prot_hdrpull(dhdp, &ifidx, txp);

        eh = (struct ethhdr *)(txp->data);
        type = ntohs(eh->h_proto);

        if (type == ETH_P_PAE)
                atomic_dec(&dhd->pend_8021x_cnt);

}

static struct net_device_stats *dhd_get_stats(struct net_device *net)
{
        dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
        dhd_if_t *ifp;
        int ifidx;

        DHD_TRACE(("%s: Enter\n", __func__));

        ifidx = dhd_net2idx(dhd, net);
        if (ifidx == DHD_BAD_IF)
                return NULL;

        ifp = dhd->iflist[ifidx];
        ASSERT(dhd && ifp);

        if (dhd->pub.up) {
                /* Use the protocol to get dongle stats */
                dhd_prot_dstats(&dhd->pub);
        }

        /* Copy dongle stats to net device stats */
        ifp->stats.rx_packets = dhd->pub.dstats.rx_packets;
        ifp->stats.tx_packets = dhd->pub.dstats.tx_packets;
        ifp->stats.rx_bytes = dhd->pub.dstats.rx_bytes;
        ifp->stats.tx_bytes = dhd->pub.dstats.tx_bytes;
        ifp->stats.rx_errors = dhd->pub.dstats.rx_errors;
        ifp->stats.tx_errors = dhd->pub.dstats.tx_errors;
        ifp->stats.rx_dropped = dhd->pub.dstats.rx_dropped;
        ifp->stats.tx_dropped = dhd->pub.dstats.tx_dropped;
        ifp->stats.multicast = dhd->pub.dstats.multicast;

        return &ifp->stats;
}

static int dhd_watchdog_thread(void *data)
{
        dhd_info_t *dhd = (dhd_info_t *) data;

        /* This thread doesn't need any user-level access,
         * so get rid of all our resources
         */
#ifdef DHD_SCHED
        if (dhd_watchdog_prio > 0) {
                struct sched_param param;
                param.sched_priority = (dhd_watchdog_prio < MAX_RT_PRIO) ?
                    dhd_watchdog_prio : (MAX_RT_PRIO - 1);
                setScheduler(current, SCHED_FIFO, &param);
        }
#endif                          /* DHD_SCHED */

        allow_signal(SIGTERM);
        /* Run until signal received */
        while (1) {
                if (kthread_should_stop())
                        break;
                if (down_interruptible(&dhd->watchdog_sem) == 0) {
                        if (dhd->pub.dongle_reset == false) {
                                /* Call the bus module watchdog */
                                dhd_bus_watchdog(&dhd->pub);
                        }
                        /* Count the tick for reference */
                        dhd->pub.tickcnt++;
                } else
                        break;
        }
        return 0;
}

static void dhd_watchdog(unsigned long data)
{
        dhd_info_t *dhd = (dhd_info_t *) data;

        if (dhd->watchdog_tsk) {
                up(&dhd->watchdog_sem);

                /* Reschedule the watchdog */
                if (dhd->wd_timer_valid) {
                        mod_timer(&dhd->timer,
                                  jiffies + dhd_watchdog_ms * HZ / 1000);
                }
                return;
        }

        /* Call the bus module watchdog */
        dhd_bus_watchdog(&dhd->pub);

        /* Count the tick for reference */
        dhd->pub.tickcnt++;

        /* Reschedule the watchdog */
        if (dhd->wd_timer_valid)
                mod_timer(&dhd->timer, jiffies + dhd_watchdog_ms * HZ / 1000);
}

static int dhd_dpc_thread(void *data)
{
        dhd_info_t *dhd = (dhd_info_t *) data;

        /* This thread doesn't need any user-level access,
         * so get rid of all our resources
         */
#ifdef DHD_SCHED
        if (dhd_dpc_prio > 0) {
                struct sched_param param;
                param.sched_priority =
                    (dhd_dpc_prio <
                     MAX_RT_PRIO) ? dhd_dpc_prio : (MAX_RT_PRIO - 1);
                setScheduler(current, SCHED_FIFO, &param);
        }
#endif                          /* DHD_SCHED */

        allow_signal(SIGTERM);
        /* Run until signal received */
        while (1) {
                if (kthread_should_stop())
                        break;
                if (down_interruptible(&dhd->dpc_sem) == 0) {
                        /* Call bus dpc unless it indicated down
                                 (then clean stop) */
                        if (dhd->pub.busstate != DHD_BUS_DOWN) {
                                if (dhd_bus_dpc(dhd->pub.bus)) {
                                        up(&dhd->dpc_sem);
                                }
                        } else {
                                dhd_bus_stop(dhd->pub.bus, true);
                        }
                } else
                        break;
        }
        return 0;
}

static void dhd_dpc(unsigned long data)
{
        dhd_info_t *dhd;

        dhd = (dhd_info_t *) data;

        /* Call bus dpc unless it indicated down (then clean stop) */
        if (dhd->pub.busstate != DHD_BUS_DOWN) {
                if (dhd_bus_dpc(dhd->pub.bus))
                        tasklet_schedule(&dhd->tasklet);
        } else {
                dhd_bus_stop(dhd->pub.bus, true);
        }
}

void dhd_sched_dpc(dhd_pub_t *dhdp)
{
        dhd_info_t *dhd = (dhd_info_t *) dhdp->info;

        if (dhd->dpc_tsk) {
                up(&dhd->dpc_sem);
                return;
        }

        tasklet_schedule(&dhd->tasklet);
}

#ifdef TOE
/* Retrieve current toe component enables, which are kept
         as a bitmap in toe_ol iovar */
static int dhd_toe_get(dhd_info_t *dhd, int ifidx, u32 *toe_ol)
{
        wl_ioctl_t ioc;
        char buf[32];
        int ret;

        memset(&ioc, 0, sizeof(ioc));

        ioc.cmd = WLC_GET_VAR;
        ioc.buf = buf;
        ioc.len = (uint) sizeof(buf);
        ioc.set = false;

        strcpy(buf, "toe_ol");
        ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
        if (ret < 0) {
                /* Check for older dongle image that doesn't support toe_ol */
                if (ret == -EIO) {
                        DHD_ERROR(("%s: toe not supported by device\n",
                                   dhd_ifname(&dhd->pub, ifidx)));
                        return -EOPNOTSUPP;
                }

                DHD_INFO(("%s: could not get toe_ol: ret=%d\n",
                          dhd_ifname(&dhd->pub, ifidx), ret));
                return ret;
        }

        memcpy(toe_ol, buf, sizeof(u32));
        return 0;
}

/* Set current toe component enables in toe_ol iovar,
         and set toe global enable iovar */
static int dhd_toe_set(dhd_info_t *dhd, int ifidx, u32 toe_ol)
{
        wl_ioctl_t ioc;
        char buf[32];
        int toe, ret;

        memset(&ioc, 0, sizeof(ioc));

        ioc.cmd = WLC_SET_VAR;
        ioc.buf = buf;
        ioc.len = (uint) sizeof(buf);
        ioc.set = true;

        /* Set toe_ol as requested */

        strcpy(buf, "toe_ol");
        memcpy(&buf[sizeof("toe_ol")], &toe_ol, sizeof(u32));

        ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
        if (ret < 0) {
                DHD_ERROR(("%s: could not set toe_ol: ret=%d\n",
                           dhd_ifname(&dhd->pub, ifidx), ret));
                return ret;
        }

        /* Enable toe globally only if any components are enabled. */

        toe = (toe_ol != 0);

        strcpy(buf, "toe");
        memcpy(&buf[sizeof("toe")], &toe, sizeof(u32));

        ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
        if (ret < 0) {
                DHD_ERROR(("%s: could not set toe: ret=%d\n",
                           dhd_ifname(&dhd->pub, ifidx), ret));
                return ret;
        }

        return 0;
}
#endif                          /* TOE */

static void dhd_ethtool_get_drvinfo(struct net_device *net,
                                    struct ethtool_drvinfo *info)
{
        dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);

        sprintf(info->driver, DRV_MODULE_NAME);
        sprintf(info->version, "%lu", dhd->pub.drv_version);
        sprintf(info->fw_version, "%s", wl_cfg80211_get_fwname());
        sprintf(info->bus_info, "%s", dev_name(&wl_cfg80211_get_sdio_func()->dev));
}

struct ethtool_ops dhd_ethtool_ops = {
        .get_drvinfo = dhd_ethtool_get_drvinfo
};

static int dhd_ethtool(dhd_info_t *dhd, void *uaddr)
{
        struct ethtool_drvinfo info;
        char drvname[sizeof(info.driver)];
        u32 cmd;
#ifdef TOE
        struct ethtool_value edata;
        u32 toe_cmpnt, csum_dir;
        int ret;
#endif

        DHD_TRACE(("%s: Enter\n", __func__));

        /* all ethtool calls start with a cmd word */
        if (copy_from_user(&cmd, uaddr, sizeof(u32)))
                return -EFAULT;

        switch (cmd) {
        case ETHTOOL_GDRVINFO:
                /* Copy out any request driver name */
                if (copy_from_user(&info, uaddr, sizeof(info)))
                        return -EFAULT;
                strncpy(drvname, info.driver, sizeof(info.driver));
                drvname[sizeof(info.driver) - 1] = '\0';

                /* clear struct for return */
                memset(&info, 0, sizeof(info));
                info.cmd = cmd;

                /* if dhd requested, identify ourselves */
                if (strcmp(drvname, "?dhd") == 0) {
                        sprintf(info.driver, "dhd");
                        strcpy(info.version, EPI_VERSION_STR);
                }

                /* otherwise, require dongle to be up */
                else if (!dhd->pub.up) {
                        DHD_ERROR(("%s: dongle is not up\n", __func__));
                        return -ENODEV;
                }

                /* finally, report dongle driver type */
                else if (dhd->pub.iswl)
                        sprintf(info.driver, "wl");
                else
                        sprintf(info.driver, "xx");

                sprintf(info.version, "%lu", dhd->pub.drv_version);
                if (copy_to_user(uaddr, &info, sizeof(info)))
                        return -EFAULT;
                DHD_CTL(("%s: given %*s, returning %s\n", __func__,
                         (int)sizeof(drvname), drvname, info.driver));
                break;

#ifdef TOE
                /* Get toe offload components from dongle */
        case ETHTOOL_GRXCSUM:
        case ETHTOOL_GTXCSUM:
                ret = dhd_toe_get(dhd, 0, &toe_cmpnt);
                if (ret < 0)
                        return ret;

                csum_dir =
                    (cmd == ETHTOOL_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;

                edata.cmd = cmd;
                edata.data = (toe_cmpnt & csum_dir) ? 1 : 0;

                if (copy_to_user(uaddr, &edata, sizeof(edata)))
                        return -EFAULT;
                break;

                /* Set toe offload components in dongle */
        case ETHTOOL_SRXCSUM:
        case ETHTOOL_STXCSUM:
                if (copy_from_user(&edata, uaddr, sizeof(edata)))
                        return -EFAULT;

                /* Read the current settings, update and write back */
                ret = dhd_toe_get(dhd, 0, &toe_cmpnt);
                if (ret < 0)
                        return ret;

                csum_dir =
                    (cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;

                if (edata.data != 0)
                        toe_cmpnt |= csum_dir;
                else
                        toe_cmpnt &= ~csum_dir;

                ret = dhd_toe_set(dhd, 0, toe_cmpnt);
                if (ret < 0)
                        return ret;

                /* If setting TX checksum mode, tell Linux the new mode */
                if (cmd == ETHTOOL_STXCSUM) {
                        if (edata.data)
                                dhd->iflist[0]->net->features |=
                                    NETIF_F_IP_CSUM;
                        else
                                dhd->iflist[0]->net->features &=
                                    ~NETIF_F_IP_CSUM;
                }

                break;
#endif                          /* TOE */

        default:
                return -EOPNOTSUPP;
        }

        return 0;
}

static int dhd_ioctl_entry(struct net_device *net, struct ifreq *ifr, int cmd)
{
        dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
        dhd_ioctl_t ioc;
        int bcmerror = 0;
        int buflen = 0;
        void *buf = NULL;
        uint driver = 0;
        int ifidx;
        bool is_set_key_cmd;

        ifidx = dhd_net2idx(dhd, net);
        DHD_TRACE(("%s: ifidx %d, cmd 0x%04x\n", __func__, ifidx, cmd));

        if (ifidx == DHD_BAD_IF)
                return -1;

#if defined(CONFIG_WIRELESS_EXT)
        /* linux wireless extensions */
        if ((cmd >= SIOCIWFIRST) && (cmd <= SIOCIWLAST)) {
                /* may recurse, do NOT lock */
                return wl_iw_ioctl(net, ifr, cmd);
        }
#endif                          /* defined(CONFIG_WIRELESS_EXT) */

        if (cmd == SIOCETHTOOL)
                return dhd_ethtool(dhd, (void *)ifr->ifr_data);

        if (cmd != SIOCDEVPRIVATE)
                return -EOPNOTSUPP;

        memset(&ioc, 0, sizeof(ioc));

        /* Copy the ioc control structure part of ioctl request */
        if (copy_from_user(&ioc, ifr->ifr_data, sizeof(wl_ioctl_t))) {
                bcmerror = -EINVAL;
                goto done;
        }

        /* Copy out any buffer passed */
        if (ioc.buf) {
                buflen = min_t(int, ioc.len, DHD_IOCTL_MAXLEN);
                /* optimization for direct ioctl calls from kernel */
                /*
                   if (segment_eq(get_fs(), KERNEL_DS)) {
                   buf = ioc.buf;
                   } else {
                 */
                {
                        buf = kmalloc(buflen, GFP_ATOMIC);
                        if (!buf) {
                                bcmerror = -ENOMEM;
                                goto done;
                        }
                        if (copy_from_user(buf, ioc.buf, buflen)) {
                                bcmerror = -EINVAL;
                                goto done;
                        }
                }
        }

        /* To differentiate between wl and dhd read 4 more byes */
        if ((copy_from_user(&driver, (char *)ifr->ifr_data + sizeof(wl_ioctl_t),
                            sizeof(uint)) != 0)) {
                bcmerror = -EINVAL;
                goto done;
        }

        if (!capable(CAP_NET_ADMIN)) {
                bcmerror = -EPERM;
                goto done;
        }

        /* check for local dhd ioctl and handle it */
        if (driver == DHD_IOCTL_MAGIC) {
                bcmerror = dhd_ioctl((void *)&dhd->pub, &ioc, buf, buflen);
                if (bcmerror)
                        dhd->pub.bcmerror = bcmerror;
                goto done;
        }

        /* send to dongle (must be up, and wl) */
        if ((dhd->pub.busstate != DHD_BUS_DATA)) {
                DHD_ERROR(("%s DONGLE_DOWN,__func__\n", __func__));
                bcmerror = -EIO;
                goto done;
        }

        if (!dhd->pub.iswl) {
                bcmerror = -EIO;
                goto done;
        }

        /* Intercept WLC_SET_KEY IOCTL - serialize M4 send and set key IOCTL to
         * prevent M4 encryption.
         */
        is_set_key_cmd = ((ioc.cmd == WLC_SET_KEY) ||
                          ((ioc.cmd == WLC_SET_VAR) &&
                           !(strncmp("wsec_key", ioc.buf, 9))) ||
                          ((ioc.cmd == WLC_SET_VAR) &&
                           !(strncmp("bsscfg:wsec_key", ioc.buf, 15))));
        if (is_set_key_cmd)
                dhd_wait_pend8021x(net);

        bcmerror =
            dhd_prot_ioctl(&dhd->pub, ifidx, (wl_ioctl_t *)&ioc, buf, buflen);

done:
        if (!bcmerror && buf && ioc.buf) {
                if (copy_to_user(ioc.buf, buf, buflen))
                        bcmerror = -EFAULT;
        }

        kfree(buf);

        if (bcmerror > 0)
                bcmerror = 0;

        return bcmerror;
}

static int dhd_stop(struct net_device *net)
{
#if !defined(IGNORE_ETH0_DOWN)
        dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);

        DHD_TRACE(("%s: Enter\n", __func__));
        if (IS_CFG80211_FAVORITE()) {
                wl_cfg80211_down();
        }
        if (dhd->pub.up == 0)
                return 0;

        /* Set state and stop OS transmissions */
        dhd->pub.up = 0;
        netif_stop_queue(net);
#else
        DHD_ERROR(("BYPASS %s:due to BRCM compilation : under investigation\n",
                __func__));
#endif                          /* !defined(IGNORE_ETH0_DOWN) */

        return 0;
}

static int dhd_open(struct net_device *net)
{
        dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
#ifdef TOE
        u32 toe_ol;
#endif
        int ifidx = dhd_net2idx(dhd, net);
        s32 ret = 0;

        DHD_TRACE(("%s: ifidx %d\n", __func__, ifidx));

        if (ifidx == 0) {       /* do it only for primary eth0 */

                /* try to bring up bus */
                ret = dhd_bus_start(&dhd->pub);
                if (ret != 0) {
                        DHD_ERROR(("%s: failed with code %d\n", __func__, ret));
                        return -1;
                }
                atomic_set(&dhd->pend_8021x_cnt, 0);

                memcpy(net->dev_addr, dhd->pub.mac, ETH_ALEN);

#ifdef TOE
                /* Get current TOE mode from dongle */
                if (dhd_toe_get(dhd, ifidx, &toe_ol) >= 0
                    && (toe_ol & TOE_TX_CSUM_OL) != 0)
                        dhd->iflist[ifidx]->net->features |= NETIF_F_IP_CSUM;
                else
                        dhd->iflist[ifidx]->net->features &= ~NETIF_F_IP_CSUM;
#endif
        }
        /* Allow transmit calls */
        netif_start_queue(net);
        dhd->pub.up = 1;
        if (IS_CFG80211_FAVORITE()) {
                if (unlikely(wl_cfg80211_up())) {
                        DHD_ERROR(("%s: failed to bring up cfg80211\n",
                                   __func__));
                        return -1;
                }
        }

        return ret;
}

int
dhd_add_if(dhd_info_t *dhd, int ifidx, void *handle, char *name,
           u8 *mac_addr, u32 flags, u8 bssidx)
{
        dhd_if_t *ifp;

        DHD_TRACE(("%s: idx %d, handle->%p\n", __func__, ifidx, handle));

        ASSERT(dhd && (ifidx < DHD_MAX_IFS));

        ifp = dhd->iflist[ifidx];
        if (!ifp && !(ifp = kmalloc(sizeof(dhd_if_t), GFP_ATOMIC))) {
                DHD_ERROR(("%s: OOM - dhd_if_t\n", __func__));
                return -ENOMEM;
        }

        memset(ifp, 0, sizeof(dhd_if_t));
        ifp->info = dhd;
        dhd->iflist[ifidx] = ifp;
        strlcpy(ifp->name, name, IFNAMSIZ);
        if (mac_addr != NULL)
                memcpy(&ifp->mac_addr, mac_addr, ETH_ALEN);

        if (handle == NULL) {
                ifp->state = WLC_E_IF_ADD;
                ifp->idx = ifidx;
                ASSERT(dhd->sysioc_tsk);
                up(&dhd->sysioc_sem);
        } else
                ifp->net = (struct net_device *)handle;

        return 0;
}

void dhd_del_if(dhd_info_t *dhd, int ifidx)
{
        dhd_if_t *ifp;

        DHD_TRACE(("%s: idx %d\n", __func__, ifidx));

        ASSERT(dhd && ifidx && (ifidx < DHD_MAX_IFS));
        ifp = dhd->iflist[ifidx];
        if (!ifp) {
                DHD_ERROR(("%s: Null interface\n", __func__));
                return;
        }

        ifp->state = WLC_E_IF_DEL;
        ifp->idx = ifidx;
        ASSERT(dhd->sysioc_tsk);
        up(&dhd->sysioc_sem);
}

dhd_pub_t *dhd_attach(struct dhd_bus *bus, uint bus_hdrlen)
{
        dhd_info_t *dhd = NULL;
        struct net_device *net;

        DHD_TRACE(("%s: Enter\n", __func__));
        /* updates firmware nvram path if it was provided as module
                 paramters */
        if ((firmware_path != NULL) && (firmware_path[0] != '\0'))
                strcpy(fw_path, firmware_path);
        if ((nvram_path != NULL) && (nvram_path[0] != '\0'))
                strcpy(nv_path, nvram_path);

        /* Allocate etherdev, including space for private structure */
        net = alloc_etherdev(sizeof(dhd));
        if (!net) {
                DHD_ERROR(("%s: OOM - alloc_etherdev\n", __func__));
                goto fail;
        }

        /* Allocate primary dhd_info */
        dhd = kzalloc(sizeof(dhd_info_t), GFP_ATOMIC);
        if (!dhd) {
                DHD_ERROR(("%s: OOM - alloc dhd_info\n", __func__));
                goto fail;
        }

        /*
         * Save the dhd_info into the priv
         */
        memcpy(netdev_priv(net), &dhd, sizeof(dhd));

        /* Set network interface name if it was provided as module parameter */
        if (iface_name[0]) {
                int len;
                char ch;
                strncpy(net->name, iface_name, IFNAMSIZ);
                net->name[IFNAMSIZ - 1] = 0;
                len = strlen(net->name);
                ch = net->name[len - 1];
                if ((ch > '9' || ch < '0') && (len < IFNAMSIZ - 2))
                        strcat(net->name, "%d");
        }

        if (dhd_add_if(dhd, 0, (void *)net, net->name, NULL, 0, 0) ==
            DHD_BAD_IF)
                goto fail;

        net->netdev_ops = NULL;
        sema_init(&dhd->proto_sem, 1);
        /* Initialize other structure content */
        init_waitqueue_head(&dhd->ioctl_resp_wait);
        init_waitqueue_head(&dhd->ctrl_wait);

        /* Initialize the spinlocks */
        spin_lock_init(&dhd->sdlock);
        spin_lock_init(&dhd->txqlock);

        /* Link to info module */
        dhd->pub.info = dhd;

        /* Link to bus module */
        dhd->pub.bus = bus;
        dhd->pub.hdrlen = bus_hdrlen;

        /* Attach and link in the protocol */
        if (dhd_prot_attach(&dhd->pub) != 0) {
                DHD_ERROR(("dhd_prot_attach failed\n"));
                goto fail;
        }
#if defined(CONFIG_WIRELESS_EXT)
        /* Attach and link in the iw */
        if (wl_iw_attach(net, (void *)&dhd->pub) != 0) {
                DHD_ERROR(("wl_iw_attach failed\n"));
                goto fail;
        }
#endif  /* defined(CONFIG_WIRELESS_EXT) */

        /* Attach and link in the cfg80211 */
        if (IS_CFG80211_FAVORITE()) {
                if (unlikely(wl_cfg80211_attach(net, &dhd->pub))) {
                        DHD_ERROR(("wl_cfg80211_attach failed\n"));
                        goto fail;
                }
                if (!NO_FW_REQ()) {
                        strcpy(fw_path, wl_cfg80211_get_fwname());
                        strcpy(nv_path, wl_cfg80211_get_nvramname());
                }
        }

        /* Set up the watchdog timer */
        init_timer(&dhd->timer);
        dhd->timer.data = (unsigned long) dhd;
        dhd->timer.function = dhd_watchdog;

        /* Initialize thread based operation and lock */
        sema_init(&dhd->sdsem, 1);
        if ((dhd_watchdog_prio >= 0) && (dhd_dpc_prio >= 0))
                dhd->threads_only = true;
        else
                dhd->threads_only = false;

        if (dhd_dpc_prio >= 0) {
                /* Initialize watchdog thread */
                sema_init(&dhd->watchdog_sem, 0);
                dhd->watchdog_tsk = kthread_run(dhd_watchdog_thread, dhd,
                                                "dhd_watchdog");
                if (IS_ERR(dhd->watchdog_tsk)) {
                        printk(KERN_WARNING
                                "dhd_watchdog thread failed to start\n");
                        dhd->watchdog_tsk = NULL;
                }
        } else {
                dhd->watchdog_tsk = NULL;
        }

        /* Set up the bottom half handler */
        if (dhd_dpc_prio >= 0) {
                /* Initialize DPC thread */
                sema_init(&dhd->dpc_sem, 0);
                dhd->dpc_tsk = kthread_run(dhd_dpc_thread, dhd, "dhd_dpc");
                if (IS_ERR(dhd->dpc_tsk)) {
                        printk(KERN_WARNING
                                "dhd_dpc thread failed to start\n");
                        dhd->dpc_tsk = NULL;
                }
        } else {
                tasklet_init(&dhd->tasklet, dhd_dpc, (unsigned long) dhd);
                dhd->dpc_tsk = NULL;
        }

        if (dhd_sysioc) {
                sema_init(&dhd->sysioc_sem, 0);
                dhd->sysioc_tsk = kthread_run(_dhd_sysioc_thread, dhd,
                                                "_dhd_sysioc");
                if (IS_ERR(dhd->sysioc_tsk)) {
                        printk(KERN_WARNING
                                "_dhd_sysioc thread failed to start\n");
                        dhd->sysioc_tsk = NULL;
                }

        } else
                dhd->sysioc_tsk = NULL;

        /*
         * Save the dhd_info into the priv
         */
        memcpy(netdev_priv(net), &dhd, sizeof(dhd));

#if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
        g_bus = bus;
#endif
#if defined(CONFIG_PM_SLEEP)
        atomic_set(&dhd_mmc_suspend, false);
        if (!IS_CFG80211_FAVORITE())
                register_pm_notifier(&dhd_sleep_pm_notifier);
#endif  /* defined(CONFIG_PM_SLEEP) */
        /* && defined(DHD_GPL) */
        /* Init lock suspend to prevent kernel going to suspend */
#ifdef CONFIG_HAS_EARLYSUSPEND
        dhd->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 20;
        dhd->early_suspend.suspend = dhd_early_suspend;
        dhd->early_suspend.resume = dhd_late_resume;
        register_early_suspend(&dhd->early_suspend);
#endif

        return &dhd->pub;

fail:
        if (net)
                free_netdev(net);
        if (dhd)
                dhd_detach(&dhd->pub);

        return NULL;
}

int dhd_bus_start(dhd_pub_t *dhdp)
{
        int ret = -1;
        dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
#ifdef EMBEDDED_PLATFORM
        char iovbuf[WL_EVENTING_MASK_LEN + 12]; /*  Room for "event_msgs" +
                                                 '\0' + bitvec  */
#endif                          /* EMBEDDED_PLATFORM */

        ASSERT(dhd);

        DHD_TRACE(("%s:\n", __func__));

        /* try to download image and nvram to the dongle */
        if (dhd->pub.busstate == DHD_BUS_DOWN) {
                if (!(dhd_bus_download_firmware(dhd->pub.bus,
                                                fw_path, nv_path))) {
                        DHD_ERROR(("%s: dhdsdio_probe_download failed. "
                                "firmware = %s nvram = %s\n",
                                __func__, fw_path, nv_path));
                        return -1;
                }
        }

        /* Start the watchdog timer */
        dhd->pub.tickcnt = 0;
        dhd_os_wd_timer(&dhd->pub, dhd_watchdog_ms);

        /* Bring up the bus */
        ret = dhd_bus_init(&dhd->pub, true);
        if (ret != 0) {
                DHD_ERROR(("%s, dhd_bus_init failed %d\n", __func__, ret));
                return ret;
        }
#if defined(OOB_INTR_ONLY)
        /* Host registration for OOB interrupt */
        if (bcmsdh_register_oob_intr(dhdp)) {
                del_timer_sync(&dhd->timer);
                dhd->wd_timer_valid = false;
                DHD_ERROR(("%s Host failed to resgister for OOB\n", __func__));
                return -ENODEV;
        }

        /* Enable oob at firmware */
        dhd_enable_oob_intr(dhd->pub.bus, true);
#endif                          /* defined(OOB_INTR_ONLY) */

        /* If bus is not ready, can't come up */
        if (dhd->pub.busstate != DHD_BUS_DATA) {
                del_timer_sync(&dhd->timer);
                dhd->wd_timer_valid = false;
                DHD_ERROR(("%s failed bus is not ready\n", __func__));
                return -ENODEV;
        }
#ifdef EMBEDDED_PLATFORM
        bcm_mkiovar("event_msgs", dhdp->eventmask, WL_EVENTING_MASK_LEN, iovbuf,
                    sizeof(iovbuf));
        dhdcdc_query_ioctl(dhdp, 0, WLC_GET_VAR, iovbuf, sizeof(iovbuf));
        memcpy(dhdp->eventmask, iovbuf, WL_EVENTING_MASK_LEN);

        setbit(dhdp->eventmask, WLC_E_SET_SSID);
        setbit(dhdp->eventmask, WLC_E_PRUNE);
        setbit(dhdp->eventmask, WLC_E_AUTH);
        setbit(dhdp->eventmask, WLC_E_REASSOC);
        setbit(dhdp->eventmask, WLC_E_REASSOC_IND);
        setbit(dhdp->eventmask, WLC_E_DEAUTH_IND);
        setbit(dhdp->eventmask, WLC_E_DISASSOC_IND);
        setbit(dhdp->eventmask, WLC_E_DISASSOC);
        setbit(dhdp->eventmask, WLC_E_JOIN);
        setbit(dhdp->eventmask, WLC_E_ASSOC_IND);
        setbit(dhdp->eventmask, WLC_E_PSK_SUP);
        setbit(dhdp->eventmask, WLC_E_LINK);
        setbit(dhdp->eventmask, WLC_E_NDIS_LINK);
        setbit(dhdp->eventmask, WLC_E_MIC_ERROR);
        setbit(dhdp->eventmask, WLC_E_PMKID_CACHE);
        setbit(dhdp->eventmask, WLC_E_TXFAIL);
        setbit(dhdp->eventmask, WLC_E_JOIN_START);
        setbit(dhdp->eventmask, WLC_E_SCAN_COMPLETE);
#ifdef PNO_SUPPORT
        setbit(dhdp->eventmask, WLC_E_PFN_NET_FOUND);
#endif                          /* PNO_SUPPORT */

/* enable dongle roaming event */

        dhdp->pktfilter_count = 1;
        /* Setup filter to allow only unicast */
        dhdp->pktfilter[0] = "100 0 0 0 0x01 0x00";
#endif                          /* EMBEDDED_PLATFORM */

        /* Bus is ready, do any protocol initialization */
        ret = dhd_prot_init(&dhd->pub);
        if (ret < 0)
                return ret;

        return 0;
}

int
dhd_iovar(dhd_pub_t *pub, int ifidx, char *name, char *cmd_buf, uint cmd_len,
          int set)
{
        char buf[strlen(name) + 1 + cmd_len];
        int len = sizeof(buf);
        wl_ioctl_t ioc;
        int ret;

        len = bcm_mkiovar(name, cmd_buf, cmd_len, buf, len);

        memset(&ioc, 0, sizeof(ioc));

        ioc.cmd = set ? WLC_SET_VAR : WLC_GET_VAR;
        ioc.buf = buf;
        ioc.len = len;
        ioc.set = set;

        ret = dhd_prot_ioctl(pub, ifidx, &ioc, ioc.buf, ioc.len);
        if (!set && ret >= 0)
                memcpy(cmd_buf, buf, cmd_len);

        return ret;
}

static struct net_device_ops dhd_ops_pri = {
        .ndo_open = dhd_open,
        .ndo_stop = dhd_stop,
        .ndo_get_stats = dhd_get_stats,
        .ndo_do_ioctl = dhd_ioctl_entry,
        .ndo_start_xmit = dhd_start_xmit,
        .ndo_set_mac_address = dhd_set_mac_address,
        .ndo_set_multicast_list = dhd_set_multicast_list
};

int dhd_net_attach(dhd_pub_t *dhdp, int ifidx)
{
        dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
        struct net_device *net;
        u8 temp_addr[ETH_ALEN] = {
                0x00, 0x90, 0x4c, 0x11, 0x22, 0x33};

        DHD_TRACE(("%s: ifidx %d\n", __func__, ifidx));

        ASSERT(dhd && dhd->iflist[ifidx]);

        net = dhd->iflist[ifidx]->net;
        ASSERT(net);

        ASSERT(!net->netdev_ops);
        net->netdev_ops = &dhd_ops_pri;

        /*
         * We have to use the primary MAC for virtual interfaces
         */
        if (ifidx != 0) {
                /* for virtual interfaces use the primary MAC  */
                memcpy(temp_addr, dhd->pub.mac, ETH_ALEN);

        }

        if (ifidx == 1) {
                DHD_TRACE(("%s ACCESS POINT MAC: \n", __func__));
                /*  ACCESSPOINT INTERFACE CASE */
                temp_addr[0] |= 0X02;   /* set bit 2 ,
                         - Locally Administered address  */

        }
        net->hard_header_len = ETH_HLEN + dhd->pub.hdrlen;
        net->ethtool_ops = &dhd_ethtool_ops;

        dhd->pub.rxsz = net->mtu + net->hard_header_len + dhd->pub.hdrlen;

        memcpy(net->dev_addr, temp_addr, ETH_ALEN);

        if (register_netdev(net) != 0) {
                DHD_ERROR(("%s: couldn't register the net device\n",
                        __func__));
                goto fail;
        }

        DHD_INFO(("%s: Broadcom Dongle Host Driver\n", net->name));

        return 0;

fail:
        net->netdev_ops = NULL;
        return -EBADE;
}

void dhd_bus_detach(dhd_pub_t *dhdp)
{
        dhd_info_t *dhd;

        DHD_TRACE(("%s: Enter\n", __func__));

        if (dhdp) {
                dhd = (dhd_info_t *) dhdp->info;
                if (dhd) {
                        /* Stop the protocol module */
                        dhd_prot_stop(&dhd->pub);

                        /* Stop the bus module */
                        dhd_bus_stop(dhd->pub.bus, true);
#if defined(OOB_INTR_ONLY)
                        bcmsdh_unregister_oob_intr();
#endif                          /* defined(OOB_INTR_ONLY) */

                        /* Clear the watchdog timer */
                        del_timer_sync(&dhd->timer);
                        dhd->wd_timer_valid = false;
                }
        }
}

void dhd_detach(dhd_pub_t *dhdp)
{
        dhd_info_t *dhd;

        DHD_TRACE(("%s: Enter\n", __func__));

        if (dhdp) {
                dhd = (dhd_info_t *) dhdp->info;
                if (dhd) {
                        dhd_if_t *ifp;
                        int i;

#if defined(CONFIG_HAS_EARLYSUSPEND)
                        if (dhd->early_suspend.suspend)
                                unregister_early_suspend(&dhd->early_suspend);
#endif                          /* defined(CONFIG_HAS_EARLYSUSPEND) */

                        for (i = 1; i < DHD_MAX_IFS; i++)
                                if (dhd->iflist[i])
                                        dhd_del_if(dhd, i);

                        ifp = dhd->iflist[0];
                        ASSERT(ifp);
                        if (ifp->net->netdev_ops == &dhd_ops_pri) {
                                dhd_stop(ifp->net);
                                unregister_netdev(ifp->net);
                        }

                        if (dhd->watchdog_tsk) {
                                send_sig(SIGTERM, dhd->watchdog_tsk, 1);
                                kthread_stop(dhd->watchdog_tsk);
                                dhd->watchdog_tsk = NULL;
                        }

                        if (dhd->dpc_tsk) {
                                send_sig(SIGTERM, dhd->dpc_tsk, 1);
                                kthread_stop(dhd->dpc_tsk);
                                dhd->dpc_tsk = NULL;
                        } else
                                tasklet_kill(&dhd->tasklet);

                        if (dhd->sysioc_tsk) {
                                send_sig(SIGTERM, dhd->sysioc_tsk, 1);
                                kthread_stop(dhd->sysioc_tsk);
                                dhd->sysioc_tsk = NULL;
                        }

                        dhd_bus_detach(dhdp);

                        if (dhdp->prot)
                                dhd_prot_detach(dhdp);

#if defined(CONFIG_WIRELESS_EXT)
                        wl_iw_detach();
#endif                          /* (CONFIG_WIRELESS_EXT) */

                        if (IS_CFG80211_FAVORITE())
                                wl_cfg80211_detach();

#if defined(CONFIG_PM_SLEEP)
                        if (!IS_CFG80211_FAVORITE())
                                unregister_pm_notifier(&dhd_sleep_pm_notifier);
#endif  /* defined(CONFIG_PM_SLEEP) */
                        /* && defined(DHD_GPL) */
                        free_netdev(ifp->net);
                        kfree(ifp);
                        kfree(dhd);
                }
        }
}

static void __exit dhd_module_cleanup(void)
{
        DHD_TRACE(("%s: Enter\n", __func__));

        dhd_bus_unregister();
#if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
        wifi_del_dev();
#endif
        /* Call customer gpio to turn off power with WL_REG_ON signal */
        dhd_customer_gpio_wlan_ctrl(WLAN_POWER_OFF);
}

static int __init dhd_module_init(void)
{
        int error;

        DHD_TRACE(("%s: Enter\n", __func__));

        /* Sanity check on the module parameters */
        do {
                /* Both watchdog and DPC as tasklets are ok */
                if ((dhd_watchdog_prio < 0) && (dhd_dpc_prio < 0))
                        break;

                /* If both watchdog and DPC are threads, TX must be deferred */
                if ((dhd_watchdog_prio >= 0) && (dhd_dpc_prio >= 0)
                    && dhd_deferred_tx)
                        break;

                DHD_ERROR(("Invalid module parameters.\n"));
                return -EINVAL;
        } while (0);
        /* Call customer gpio to turn on power with WL_REG_ON signal */
        dhd_customer_gpio_wlan_ctrl(WLAN_POWER_ON);

#if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
        sema_init(&wifi_control_sem, 0);

        error = wifi_add_dev();
        if (error) {
                DHD_ERROR(("%s: platform_driver_register failed\n", __func__));
                goto failed;
        }

        /* Waiting callback after platform_driver_register is done or
                 exit with error */
        if (down_timeout(&wifi_control_sem, msecs_to_jiffies(1000)) != 0) {
                printk(KERN_ERR "%s: platform_driver_register timeout\n",
                        __func__);
                /* remove device */
                wifi_del_dev();
                goto failed;
        }
#endif  /* #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC) */

        error = dhd_bus_register();

        if (error) {
                DHD_ERROR(("%s: sdio_register_driver failed\n", __func__));
                goto failed;
        }
        return error;

failed:
        /* turn off power and exit */
        dhd_customer_gpio_wlan_ctrl(WLAN_POWER_OFF);
        return -EINVAL;
}

module_init(dhd_module_init);
module_exit(dhd_module_cleanup);

/*
 * OS specific functions required to implement DHD driver in OS independent way
 */
int dhd_os_proto_block(dhd_pub_t *pub)
{
        dhd_info_t *dhd = (dhd_info_t *) (pub->info);

        if (dhd) {
                down(&dhd->proto_sem);
                return 1;
        }
        return 0;
}

int dhd_os_proto_unblock(dhd_pub_t *pub)
{
        dhd_info_t *dhd = (dhd_info_t *) (pub->info);

        if (dhd) {
                up(&dhd->proto_sem);
                return 1;
        }

        return 0;
}

unsigned int dhd_os_get_ioctl_resp_timeout(void)
{
        return (unsigned int)dhd_ioctl_timeout_msec;
}

void dhd_os_set_ioctl_resp_timeout(unsigned int timeout_msec)
{
        dhd_ioctl_timeout_msec = (int)timeout_msec;
}

int dhd_os_ioctl_resp_wait(dhd_pub_t *pub, uint *condition, bool *pending)
{
        dhd_info_t *dhd = (dhd_info_t *) (pub->info);
        DECLARE_WAITQUEUE(wait, current);
        int timeout = dhd_ioctl_timeout_msec;

        /* Convert timeout in millsecond to jiffies */
        timeout = timeout * HZ / 1000;

        /* Wait until control frame is available */
        add_wait_queue(&dhd->ioctl_resp_wait, &wait);
        set_current_state(TASK_INTERRUPTIBLE);

        while (!(*condition) && (!signal_pending(current) && timeout))
                timeout = schedule_timeout(timeout);

        if (signal_pending(current))
                *pending = true;

        set_current_state(TASK_RUNNING);
        remove_wait_queue(&dhd->ioctl_resp_wait, &wait);

        return timeout;
}

int dhd_os_ioctl_resp_wake(dhd_pub_t *pub)
{
        dhd_info_t *dhd = (dhd_info_t *) (pub->info);

        if (waitqueue_active(&dhd->ioctl_resp_wait))
                wake_up_interruptible(&dhd->ioctl_resp_wait);

        return 0;
}

void dhd_os_wd_timer(void *bus, uint wdtick)
{
        dhd_pub_t *pub = bus;
        static uint save_dhd_watchdog_ms;
        dhd_info_t *dhd = (dhd_info_t *) pub->info;

        /* don't start the wd until fw is loaded */
        if (pub->busstate == DHD_BUS_DOWN)
                return;

        /* Totally stop the timer */
        if (!wdtick && dhd->wd_timer_valid == true) {
                del_timer_sync(&dhd->timer);
                dhd->wd_timer_valid = false;
                save_dhd_watchdog_ms = wdtick;
                return;
        }

        if (wdtick) {
                dhd_watchdog_ms = (uint) wdtick;

                if (save_dhd_watchdog_ms != dhd_watchdog_ms) {

                        if (dhd->wd_timer_valid == true)
                                /* Stop timer and restart at new value */
                                del_timer_sync(&dhd->timer);

                        /* Create timer again when watchdog period is
                           dynamically changed or in the first instance
                         */
                        dhd->timer.expires =
                            jiffies + dhd_watchdog_ms * HZ / 1000;
                        add_timer(&dhd->timer);

                } else {
                        /* Re arm the timer, at last watchdog period */
                        mod_timer(&dhd->timer,
                                  jiffies + dhd_watchdog_ms * HZ / 1000);
                }

                dhd->wd_timer_valid = true;
                save_dhd_watchdog_ms = wdtick;
        }
}

void *dhd_os_open_image(char *filename)
{
        struct file *fp;

        if (IS_CFG80211_FAVORITE() && !NO_FW_REQ())
                return wl_cfg80211_request_fw(filename);

        fp = filp_open(filename, O_RDONLY, 0);
        /*
         * 2.6.11 (FC4) supports filp_open() but later revs don't?
         * Alternative:
         * fp = open_namei(AT_FDCWD, filename, O_RD, 0);
         * ???
         */
        if (IS_ERR(fp))
                fp = NULL;

        return fp;
}

int dhd_os_get_image_block(char *buf, int len, void *image)
{
        struct file *fp = (struct file *)image;
        int rdlen;

        if (IS_CFG80211_FAVORITE() && !NO_FW_REQ())
                return wl_cfg80211_read_fw(buf, len);

        if (!image)
                return 0;

        rdlen = kernel_read(fp, fp->f_pos, buf, len);
        if (rdlen > 0)
                fp->f_pos += rdlen;

        return rdlen;
}

void dhd_os_close_image(void *image)
{
        if (IS_CFG80211_FAVORITE() && !NO_FW_REQ())
                return wl_cfg80211_release_fw();
        if (image)
                filp_close((struct file *)image, NULL);
}

void dhd_os_sdlock(dhd_pub_t *pub)
{
        dhd_info_t *dhd;

        dhd = (dhd_info_t *) (pub->info);

        if (dhd->threads_only)
                down(&dhd->sdsem);
        else
                spin_lock_bh(&dhd->sdlock);
}

void dhd_os_sdunlock(dhd_pub_t *pub)
{
        dhd_info_t *dhd;

        dhd = (dhd_info_t *) (pub->info);

        if (dhd->threads_only)
                up(&dhd->sdsem);
        else
                spin_unlock_bh(&dhd->sdlock);
}

void dhd_os_sdlock_txq(dhd_pub_t *pub)
{
        dhd_info_t *dhd;

        dhd = (dhd_info_t *) (pub->info);
        spin_lock_bh(&dhd->txqlock);
}

void dhd_os_sdunlock_txq(dhd_pub_t *pub)
{
        dhd_info_t *dhd;

        dhd = (dhd_info_t *) (pub->info);
        spin_unlock_bh(&dhd->txqlock);
}

void dhd_os_sdlock_rxq(dhd_pub_t *pub)
{
}

void dhd_os_sdunlock_rxq(dhd_pub_t *pub)
{
}

void dhd_os_sdtxlock(dhd_pub_t *pub)
{
        dhd_os_sdlock(pub);
}

void dhd_os_sdtxunlock(dhd_pub_t *pub)
{
        dhd_os_sdunlock(pub);
}

static int
dhd_wl_host_event(dhd_info_t *dhd, int *ifidx, void *pktdata,
                  wl_event_msg_t *event, void **data)
{
        int bcmerror = 0;

        ASSERT(dhd != NULL);

        bcmerror = wl_host_event(dhd, ifidx, pktdata, event, data);
        if (bcmerror != 0)
                return bcmerror;

#if defined(CONFIG_WIRELESS_EXT)
        if (!IS_CFG80211_FAVORITE()) {
                if ((dhd->iflist[*ifidx] == NULL)
                    || (dhd->iflist[*ifidx]->net == NULL)) {
                        DHD_ERROR(("%s Exit null pointer\n", __func__));
                        return bcmerror;
                }

                if (dhd->iflist[*ifidx]->net)
                        wl_iw_event(dhd->iflist[*ifidx]->net, event, *data);
        }
#endif                          /* defined(CONFIG_WIRELESS_EXT)  */

        if (IS_CFG80211_FAVORITE()) {
                ASSERT(dhd->iflist[*ifidx] != NULL);
                ASSERT(dhd->iflist[*ifidx]->net != NULL);
                if (dhd->iflist[*ifidx]->net)
                        wl_cfg80211_event(dhd->iflist[*ifidx]->net, event,
                                          *data);
        }

        return bcmerror;
}

/* send up locally generated event */
void dhd_sendup_event(dhd_pub_t *dhdp, wl_event_msg_t *event, void *data)
{
        switch (be32_to_cpu(event->event_type)) {
        default:
                break;
        }
}

void dhd_wait_for_event(dhd_pub_t *dhd, bool *lockvar)
{
        struct dhd_info *dhdinfo = dhd->info;
        dhd_os_sdunlock(dhd);
        wait_event_interruptible_timeout(dhdinfo->ctrl_wait,
                                         (*lockvar == false), HZ * 2);
        dhd_os_sdlock(dhd);
        return;
}

void dhd_wait_event_wakeup(dhd_pub_t *dhd)
{
        struct dhd_info *dhdinfo = dhd->info;
        if (waitqueue_active(&dhdinfo->ctrl_wait))
                wake_up_interruptible(&dhdinfo->ctrl_wait);
        return;
}

int dhd_dev_reset(struct net_device *dev, u8 flag)
{
        dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);

        /* Turning off watchdog */
        if (flag)
                dhd_os_wd_timer(&dhd->pub, 0);

        dhd_bus_devreset(&dhd->pub, flag);

        /* Turning on watchdog back */
        if (!flag)
                dhd_os_wd_timer(&dhd->pub, dhd_watchdog_ms);
        DHD_ERROR(("%s:  WLAN OFF DONE\n", __func__));

        return 1;
}

int net_os_set_suspend_disable(struct net_device *dev, int val)
{
        dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
        int ret = 0;

        if (dhd) {
                ret = dhd->pub.suspend_disable_flag;
                dhd->pub.suspend_disable_flag = val;
        }
        return ret;
}

int net_os_set_suspend(struct net_device *dev, int val)
{
        int ret = 0;
#if defined(CONFIG_HAS_EARLYSUSPEND)
        dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);

        if (dhd) {
                dhd_os_proto_block(&dhd->pub);
                ret = dhd_set_suspend(val, &dhd->pub);
                dhd_os_proto_unblock(&dhd->pub);
        }
#endif          /* defined(CONFIG_HAS_EARLYSUSPEND) */
        return ret;
}

int net_os_set_dtim_skip(struct net_device *dev, int val)
{
        dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);

        if (dhd)
                dhd->pub.dtim_skip = val;

        return 0;
}

int net_os_set_packet_filter(struct net_device *dev, int val)
{
        dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
        int ret = 0;

        /* Packet filtering is set only if we still in early-suspend and
         * we need either to turn it ON or turn it OFF
         * We can always turn it OFF in case of early-suspend, but we turn it
         * back ON only if suspend_disable_flag was not set
         */
        if (dhd && dhd->pub.up) {
                dhd_os_proto_block(&dhd->pub);
                if (dhd->pub.in_suspend) {
                        if (!val || (val && !dhd->pub.suspend_disable_flag))
                                dhd_set_packet_filter(val, &dhd->pub);
                }
                dhd_os_proto_unblock(&dhd->pub);
        }
        return ret;
}

void dhd_dev_init_ioctl(struct net_device *dev)
{
        dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);

        dhd_preinit_ioctls(&dhd->pub);
}

#ifdef PNO_SUPPORT
/* Linux wrapper to call common dhd_pno_clean */
int dhd_dev_pno_reset(struct net_device *dev)
{
        dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);

        return dhd_pno_clean(&dhd->pub);
}

/* Linux wrapper to call common dhd_pno_enable */
int dhd_dev_pno_enable(struct net_device *dev, int pfn_enabled)
{
        dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);

        return dhd_pno_enable(&dhd->pub, pfn_enabled);
}

/* Linux wrapper to call common dhd_pno_set */
int
dhd_dev_pno_set(struct net_device *dev, wlc_ssid_t *ssids_local, int nssid,
                unsigned char scan_fr)
{
        dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);

        return dhd_pno_set(&dhd->pub, ssids_local, nssid, scan_fr);
}

/* Linux wrapper to get  pno status */
int dhd_dev_get_pno_status(struct net_device *dev)
{
        dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);

        return dhd_pno_get_status(&dhd->pub);
}

#endif                          /* PNO_SUPPORT */

static int dhd_get_pend_8021x_cnt(dhd_info_t *dhd)
{
        return atomic_read(&dhd->pend_8021x_cnt);
}

#define MAX_WAIT_FOR_8021X_TX   10

int dhd_wait_pend8021x(struct net_device *dev)
{
        dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
        int timeout = 10 * HZ / 1000;
        int ntimes = MAX_WAIT_FOR_8021X_TX;
        int pend = dhd_get_pend_8021x_cnt(dhd);

        while (ntimes && pend) {
                if (pend) {
                        set_current_state(TASK_INTERRUPTIBLE);
                        schedule_timeout(timeout);
                        set_current_state(TASK_RUNNING);
                        ntimes--;
                }
                pend = dhd_get_pend_8021x_cnt(dhd);
        }
        return pend;
}

void wl_os_wd_timer(struct net_device *ndev, uint wdtick)
{
        dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(ndev);

        dhd_os_wd_timer(&dhd->pub, wdtick);
}

#ifdef DHD_DEBUG
int write_to_file(dhd_pub_t *dhd, u8 *buf, int size)
{
        int ret = 0;
        struct file *fp;
        mm_segment_t old_fs;
        loff_t pos = 0;

        /* change to KERNEL_DS address limit */
        old_fs = get_fs();
        set_fs(KERNEL_DS);

        /* open file to write */
        fp = filp_open("/tmp/mem_dump", O_WRONLY | O_CREAT, 0640);
        if (!fp) {
                DHD_ERROR(("%s: open file error\n", __func__));
                ret = -1;
                goto exit;
        }

        /* Write buf to file */
        fp->f_op->write(fp, buf, size, &pos);

exit:
        /* free buf before return */
        kfree(buf);
        /* close file before return */
        if (fp)
                filp_close(fp, current->files);
        /* restore previous address limit */
        set_fs(old_fs);

        return ret;
}
#endif                          /* DHD_DEBUG */