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kernel-fxtec-pro1x/drivers/net/wireless/libertas/main.c
David Woodhouse 2abdc0b775 libertas: kill internal tx queue for PS mode 
It was buggy as hell anyway, since it was just spewing packets at the
device when it wasn't necessarily ready for them (in the USB case, while
the URB was still busy).

We could probably do with a better way of flushing packets to the device
_immediately_, before we stick it back into sleep mode. But we can no
longer just dequeue packets directly, it seems.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-01-28 15:06:22 -08:00

1584 lines
38 KiB
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/**
* This file contains the major functions in WLAN
* driver. It includes init, exit, open, close and main
* thread etc..
*/
#include <linux/moduleparam.h>
#include <linux/delay.h>
#include <linux/freezer.h>
#include <linux/etherdevice.h>
#include <linux/netdevice.h>
#include <linux/if_arp.h>
#include <linux/kthread.h>
#include <net/iw_handler.h>
#include <net/ieee80211.h>
#include "host.h"
#include "decl.h"
#include "dev.h"
#include "wext.h"
#include "debugfs.h"
#include "assoc.h"
#include "join.h"
#define DRIVER_RELEASE_VERSION "323.p0"
const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
#ifdef DEBUG
"-dbg"
#endif
"";
/* Module parameters */
unsigned int lbs_debug;
EXPORT_SYMBOL_GPL(lbs_debug);
module_param_named(libertas_debug, lbs_debug, int, 0644);
#define LBS_TX_PWR_DEFAULT 20 /*100mW */
#define LBS_TX_PWR_US_DEFAULT 20 /*100mW */
#define LBS_TX_PWR_JP_DEFAULT 16 /*50mW */
#define LBS_TX_PWR_FR_DEFAULT 20 /*100mW */
#define LBS_TX_PWR_EMEA_DEFAULT 20 /*100mW */
/* Format { channel, frequency (MHz), maxtxpower } */
/* band: 'B/G', region: USA FCC/Canada IC */
static struct chan_freq_power channel_freq_power_US_BG[] = {
{1, 2412, LBS_TX_PWR_US_DEFAULT},
{2, 2417, LBS_TX_PWR_US_DEFAULT},
{3, 2422, LBS_TX_PWR_US_DEFAULT},
{4, 2427, LBS_TX_PWR_US_DEFAULT},
{5, 2432, LBS_TX_PWR_US_DEFAULT},
{6, 2437, LBS_TX_PWR_US_DEFAULT},
{7, 2442, LBS_TX_PWR_US_DEFAULT},
{8, 2447, LBS_TX_PWR_US_DEFAULT},
{9, 2452, LBS_TX_PWR_US_DEFAULT},
{10, 2457, LBS_TX_PWR_US_DEFAULT},
{11, 2462, LBS_TX_PWR_US_DEFAULT}
};
/* band: 'B/G', region: Europe ETSI */
static struct chan_freq_power channel_freq_power_EU_BG[] = {
{1, 2412, LBS_TX_PWR_EMEA_DEFAULT},
{2, 2417, LBS_TX_PWR_EMEA_DEFAULT},
{3, 2422, LBS_TX_PWR_EMEA_DEFAULT},
{4, 2427, LBS_TX_PWR_EMEA_DEFAULT},
{5, 2432, LBS_TX_PWR_EMEA_DEFAULT},
{6, 2437, LBS_TX_PWR_EMEA_DEFAULT},
{7, 2442, LBS_TX_PWR_EMEA_DEFAULT},
{8, 2447, LBS_TX_PWR_EMEA_DEFAULT},
{9, 2452, LBS_TX_PWR_EMEA_DEFAULT},
{10, 2457, LBS_TX_PWR_EMEA_DEFAULT},
{11, 2462, LBS_TX_PWR_EMEA_DEFAULT},
{12, 2467, LBS_TX_PWR_EMEA_DEFAULT},
{13, 2472, LBS_TX_PWR_EMEA_DEFAULT}
};
/* band: 'B/G', region: Spain */
static struct chan_freq_power channel_freq_power_SPN_BG[] = {
{10, 2457, LBS_TX_PWR_DEFAULT},
{11, 2462, LBS_TX_PWR_DEFAULT}
};
/* band: 'B/G', region: France */
static struct chan_freq_power channel_freq_power_FR_BG[] = {
{10, 2457, LBS_TX_PWR_FR_DEFAULT},
{11, 2462, LBS_TX_PWR_FR_DEFAULT},
{12, 2467, LBS_TX_PWR_FR_DEFAULT},
{13, 2472, LBS_TX_PWR_FR_DEFAULT}
};
/* band: 'B/G', region: Japan */
static struct chan_freq_power channel_freq_power_JPN_BG[] = {
{1, 2412, LBS_TX_PWR_JP_DEFAULT},
{2, 2417, LBS_TX_PWR_JP_DEFAULT},
{3, 2422, LBS_TX_PWR_JP_DEFAULT},
{4, 2427, LBS_TX_PWR_JP_DEFAULT},
{5, 2432, LBS_TX_PWR_JP_DEFAULT},
{6, 2437, LBS_TX_PWR_JP_DEFAULT},
{7, 2442, LBS_TX_PWR_JP_DEFAULT},
{8, 2447, LBS_TX_PWR_JP_DEFAULT},
{9, 2452, LBS_TX_PWR_JP_DEFAULT},
{10, 2457, LBS_TX_PWR_JP_DEFAULT},
{11, 2462, LBS_TX_PWR_JP_DEFAULT},
{12, 2467, LBS_TX_PWR_JP_DEFAULT},
{13, 2472, LBS_TX_PWR_JP_DEFAULT},
{14, 2484, LBS_TX_PWR_JP_DEFAULT}
};
/**
* the structure for channel, frequency and power
*/
struct region_cfp_table {
u8 region;
struct chan_freq_power *cfp_BG;
int cfp_no_BG;
};
/**
* the structure for the mapping between region and CFP
*/
static struct region_cfp_table region_cfp_table[] = {
{0x10, /*US FCC */
channel_freq_power_US_BG,
ARRAY_SIZE(channel_freq_power_US_BG),
}
,
{0x20, /*CANADA IC */
channel_freq_power_US_BG,
ARRAY_SIZE(channel_freq_power_US_BG),
}
,
{0x30, /*EU*/ channel_freq_power_EU_BG,
ARRAY_SIZE(channel_freq_power_EU_BG),
}
,
{0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
ARRAY_SIZE(channel_freq_power_SPN_BG),
}
,
{0x32, /*FRANCE*/ channel_freq_power_FR_BG,
ARRAY_SIZE(channel_freq_power_FR_BG),
}
,
{0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
ARRAY_SIZE(channel_freq_power_JPN_BG),
}
,
/*Add new region here */
};
/**
* the table to keep region code
*/
u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
{ 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
/**
* 802.11b/g supported bitrates (in 500Kb/s units)
*/
u8 lbs_bg_rates[MAX_RATES] =
{ 0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
0x00, 0x00 };
/**
* FW rate table. FW refers to rates by their index in this table, not by the
* rate value itself. Values of 0x00 are
* reserved positions.
*/
static u8 fw_data_rates[MAX_RATES] =
{ 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
};
/**
* @brief use index to get the data rate
*
* @param idx The index of data rate
* @return data rate or 0
*/
u32 lbs_fw_index_to_data_rate(u8 idx)
{
if (idx >= sizeof(fw_data_rates))
idx = 0;
return fw_data_rates[idx];
}
/**
* @brief use rate to get the index
*
* @param rate data rate
* @return index or 0
*/
u8 lbs_data_rate_to_fw_index(u32 rate)
{
u8 i;
if (!rate)
return 0;
for (i = 0; i < sizeof(fw_data_rates); i++) {
if (rate == fw_data_rates[i])
return i;
}
return 0;
}
/**
* Attributes exported through sysfs
*/
/**
* @brief Get function for sysfs attribute anycast_mask
*/
static ssize_t lbs_anycast_get(struct device *dev,
struct device_attribute *attr, char * buf)
{
struct cmd_ds_mesh_access mesh_access;
memset(&mesh_access, 0, sizeof(mesh_access));
lbs_prepare_and_send_command(to_net_dev(dev)->priv,
CMD_MESH_ACCESS,
CMD_ACT_MESH_GET_ANYCAST,
CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
}
/**
* @brief Set function for sysfs attribute anycast_mask
*/
static ssize_t lbs_anycast_set(struct device *dev,
struct device_attribute *attr, const char * buf, size_t count)
{
struct cmd_ds_mesh_access mesh_access;
uint32_t datum;
memset(&mesh_access, 0, sizeof(mesh_access));
sscanf(buf, "%x", &datum);
mesh_access.data[0] = cpu_to_le32(datum);
lbs_prepare_and_send_command((to_net_dev(dev))->priv,
CMD_MESH_ACCESS,
CMD_ACT_MESH_SET_ANYCAST,
CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
return strlen(buf);
}
int lbs_add_rtap(struct lbs_private *priv);
void lbs_remove_rtap(struct lbs_private *priv);
/**
* Get function for sysfs attribute rtap
*/
static ssize_t lbs_rtap_get(struct device *dev,
struct device_attribute *attr, char * buf)
{
struct lbs_private *priv = to_net_dev(dev)->priv;
return snprintf(buf, 5, "0x%X\n", priv->monitormode);
}
/**
* Set function for sysfs attribute rtap
*/
static ssize_t lbs_rtap_set(struct device *dev,
struct device_attribute *attr, const char * buf, size_t count)
{
int monitor_mode;
struct lbs_private *priv = to_net_dev(dev)->priv;
sscanf(buf, "%x", &monitor_mode);
if (monitor_mode != LBS_MONITOR_OFF) {
if(priv->monitormode == monitor_mode)
return strlen(buf);
if (priv->monitormode == LBS_MONITOR_OFF) {
if (priv->mode == IW_MODE_INFRA)
lbs_send_deauthentication(priv);
else if (priv->mode == IW_MODE_ADHOC)
lbs_stop_adhoc_network(priv);
lbs_add_rtap(priv);
}
priv->monitormode = monitor_mode;
}
else {
if (priv->monitormode == LBS_MONITOR_OFF)
return strlen(buf);
priv->monitormode = LBS_MONITOR_OFF;
lbs_remove_rtap(priv);
if (priv->currenttxskb) {
dev_kfree_skb_any(priv->currenttxskb);
priv->currenttxskb = NULL;
}
/* Wake queues, command thread, etc. */
lbs_host_to_card_done(priv);
}
lbs_prepare_and_send_command(priv,
CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
CMD_OPTION_WAITFORRSP, 0, &priv->monitormode);
return strlen(buf);
}
/**
* lbs_rtap attribute to be exported per mshX interface
* through sysfs (/sys/class/net/mshX/libertas-rtap)
*/
static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get,
lbs_rtap_set );
/**
* anycast_mask attribute to be exported per mshX interface
* through sysfs (/sys/class/net/mshX/anycast_mask)
*/
static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
static ssize_t lbs_autostart_enabled_get(struct device *dev,
struct device_attribute *attr, char * buf)
{
struct cmd_ds_mesh_access mesh_access;
memset(&mesh_access, 0, sizeof(mesh_access));
lbs_prepare_and_send_command(to_net_dev(dev)->priv,
CMD_MESH_ACCESS,
CMD_ACT_MESH_GET_AUTOSTART_ENABLED,
CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
return sprintf(buf, "%d\n", le32_to_cpu(mesh_access.data[0]));
}
static ssize_t lbs_autostart_enabled_set(struct device *dev,
struct device_attribute *attr, const char * buf, size_t count)
{
struct cmd_ds_mesh_access mesh_access;
uint32_t datum;
struct lbs_private *priv = (to_net_dev(dev))->priv;
int ret;
memset(&mesh_access, 0, sizeof(mesh_access));
sscanf(buf, "%d", &datum);
mesh_access.data[0] = cpu_to_le32(datum);
ret = lbs_prepare_and_send_command(priv,
CMD_MESH_ACCESS,
CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
if (ret == 0)
priv->mesh_autostart_enabled = datum ? 1 : 0;
return strlen(buf);
}
static DEVICE_ATTR(autostart_enabled, 0644,
lbs_autostart_enabled_get, lbs_autostart_enabled_set);
static struct attribute *lbs_mesh_sysfs_entries[] = {
&dev_attr_anycast_mask.attr,
&dev_attr_autostart_enabled.attr,
NULL,
};
static struct attribute_group lbs_mesh_attr_group = {
.attrs = lbs_mesh_sysfs_entries,
};
/**
* @brief Check if the device can be open and wait if necessary.
*
* @param dev A pointer to net_device structure
* @return 0
*
* For USB adapter, on some systems the device open handler will be
* called before FW ready. Use the following flag check and wait
* function to work around the issue.
*
*/
static int pre_open_check(struct net_device *dev)
{
struct lbs_private *priv = (struct lbs_private *) dev->priv;
int i = 0;
while (!priv->fw_ready && i < 20) {
i++;
msleep_interruptible(100);
}
if (!priv->fw_ready) {
lbs_pr_err("firmware not ready\n");
return -1;
}
return 0;
}
/**
* @brief This function opens the device
*
* @param dev A pointer to net_device structure
* @return 0
*/
static int lbs_dev_open(struct net_device *dev)
{
struct lbs_private *priv = (struct lbs_private *) dev->priv;
lbs_deb_enter(LBS_DEB_NET);
priv->open = 1;
if (priv->connect_status == LBS_CONNECTED)
netif_carrier_on(priv->dev);
else
netif_carrier_off(priv->dev);
if (priv->mesh_dev) {
if (priv->mesh_connect_status == LBS_CONNECTED)
netif_carrier_on(priv->mesh_dev);
else
netif_carrier_off(priv->mesh_dev);
}
lbs_deb_leave(LBS_DEB_NET);
return 0;
}
/**
* @brief This function opens the mshX interface
*
* @param dev A pointer to net_device structure
* @return 0
*/
static int lbs_mesh_open(struct net_device *dev)
{
struct lbs_private *priv = (struct lbs_private *) dev->priv ;
if (pre_open_check(dev) == -1)
return -1;
priv->mesh_open = 1 ;
netif_wake_queue(priv->mesh_dev);
priv->mesh_connect_status = LBS_CONNECTED;
netif_carrier_on(priv->mesh_dev);
netif_wake_queue(priv->mesh_dev);
if (priv->infra_open == 0)
return lbs_dev_open(priv->dev) ;
return 0;
}
/**
* @brief This function opens the ethX interface
*
* @param dev A pointer to net_device structure
* @return 0
*/
static int lbs_open(struct net_device *dev)
{
struct lbs_private *priv = (struct lbs_private *) dev->priv ;
if(pre_open_check(dev) == -1)
return -1;
priv->infra_open = 1 ;
netif_wake_queue(priv->dev);
if (priv->open == 0)
return lbs_dev_open(priv->dev) ;
return 0;
}
static int lbs_dev_close(struct net_device *dev)
{
struct lbs_private *priv = dev->priv;
lbs_deb_enter(LBS_DEB_NET);
netif_carrier_off(priv->dev);
priv->open = 0;
lbs_deb_leave(LBS_DEB_NET);
return 0;
}
/**
* @brief This function closes the mshX interface
*
* @param dev A pointer to net_device structure
* @return 0
*/
static int lbs_mesh_close(struct net_device *dev)
{
struct lbs_private *priv = (struct lbs_private *) (dev->priv);
priv->mesh_open = 0;
netif_stop_queue(priv->mesh_dev);
if (priv->infra_open == 0)
return lbs_dev_close(dev);
else
return 0;
}
/**
* @brief This function closes the ethX interface
*
* @param dev A pointer to net_device structure
* @return 0
*/
static int lbs_close(struct net_device *dev)
{
struct lbs_private *priv = (struct lbs_private *) dev->priv;
netif_stop_queue(dev);
priv->infra_open = 0;
if (priv->mesh_open == 0)
return lbs_dev_close(dev);
else
return 0;
}
static int lbs_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
int ret = 0;
struct lbs_private *priv = dev->priv;
lbs_deb_enter(LBS_DEB_TX);
/* We could return NETDEV_TX_BUSY here, but I'd actually
like to get the point where we can BUG() */
if (priv->dnld_sent) {
lbs_pr_err("%s while dnld_sent\n", __func__);
priv->stats.tx_dropped++;
goto done;
}
if (priv->currenttxskb) {
lbs_pr_err("%s while TX skb pending\n", __func__);
priv->stats.tx_dropped++;
goto done;
}
netif_stop_queue(priv->dev);
if (priv->mesh_dev)
netif_stop_queue(priv->mesh_dev);
if (lbs_process_tx(priv, skb) == 0)
dev->trans_start = jiffies;
done:
lbs_deb_leave_args(LBS_DEB_TX, "ret %d", ret);
return ret;
}
/**
* @brief Mark mesh packets and handover them to lbs_hard_start_xmit
*
*/
static int lbs_mesh_pre_start_xmit(struct sk_buff *skb,
struct net_device *dev)
{
struct lbs_private *priv = dev->priv;
int ret;
lbs_deb_enter(LBS_DEB_MESH);
if (priv->monitormode != LBS_MONITOR_OFF) {
netif_stop_queue(dev);
return -EOPNOTSUPP;
}
SET_MESH_FRAME(skb);
ret = lbs_hard_start_xmit(skb, priv->mesh_dev);
lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
return ret;
}
/**
* @brief Mark non-mesh packets and handover them to lbs_hard_start_xmit
*
*/
static int lbs_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct lbs_private *priv = dev->priv;
int ret;
lbs_deb_enter(LBS_DEB_TX);
if (priv->monitormode != LBS_MONITOR_OFF) {
netif_stop_queue(dev);
return -EOPNOTSUPP;
}
UNSET_MESH_FRAME(skb);
ret = lbs_hard_start_xmit(skb, dev);
lbs_deb_leave_args(LBS_DEB_TX, "ret %d", ret);
return ret;
}
static void lbs_tx_timeout(struct net_device *dev)
{
struct lbs_private *priv = (struct lbs_private *) dev->priv;
lbs_deb_enter(LBS_DEB_TX);
lbs_pr_err("tx watch dog timeout\n");
dev->trans_start = jiffies;
if (priv->currenttxskb) {
priv->eventcause = 0x01000000;
lbs_send_tx_feedback(priv);
}
/* XX: Shouldn't we also call into the hw-specific driver
to kick it somehow? */
lbs_host_to_card_done(priv);
lbs_deb_leave(LBS_DEB_TX);
}
void lbs_host_to_card_done(struct lbs_private *priv)
{
unsigned long flags;
spin_lock_irqsave(&priv->driver_lock, flags);
priv->dnld_sent = DNLD_RES_RECEIVED;
/* Wake main thread if commands are pending */
if (!priv->cur_cmd)
wake_up_interruptible(&priv->waitq);
/* Don't wake netif queues if we're in monitor mode and
a TX packet is already pending, or if there are commands
queued to be sent. */
if (!priv->currenttxskb && list_empty(&priv->cmdpendingq)) {
if (priv->dev && priv->connect_status == LBS_CONNECTED)
netif_wake_queue(priv->dev);
if (priv->mesh_dev && priv->mesh_connect_status == LBS_CONNECTED)
netif_wake_queue(priv->mesh_dev);
}
spin_unlock_irqrestore(&priv->driver_lock, flags);
}
EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
/**
* @brief This function returns the network statistics
*
* @param dev A pointer to struct lbs_private structure
* @return A pointer to net_device_stats structure
*/
static struct net_device_stats *lbs_get_stats(struct net_device *dev)
{
struct lbs_private *priv = (struct lbs_private *) dev->priv;
return &priv->stats;
}
static int lbs_set_mac_address(struct net_device *dev, void *addr)
{
int ret = 0;
struct lbs_private *priv = (struct lbs_private *) dev->priv;
struct sockaddr *phwaddr = addr;
lbs_deb_enter(LBS_DEB_NET);
/* In case it was called from the mesh device */
dev = priv->dev ;
memset(priv->current_addr, 0, ETH_ALEN);
/* dev->dev_addr is 8 bytes */
lbs_deb_hex(LBS_DEB_NET, "dev->dev_addr", dev->dev_addr, ETH_ALEN);
lbs_deb_hex(LBS_DEB_NET, "addr", phwaddr->sa_data, ETH_ALEN);
memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
ret = lbs_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS,
CMD_ACT_SET,
CMD_OPTION_WAITFORRSP, 0, NULL);
if (ret) {
lbs_deb_net("set MAC address failed\n");
ret = -1;
goto done;
}
lbs_deb_hex(LBS_DEB_NET, "priv->macaddr", priv->current_addr, ETH_ALEN);
memcpy(dev->dev_addr, priv->current_addr, ETH_ALEN);
if (priv->mesh_dev)
memcpy(priv->mesh_dev->dev_addr, priv->current_addr, ETH_ALEN);
done:
lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
return ret;
}
static int lbs_copy_multicast_address(struct lbs_private *priv,
struct net_device *dev)
{
int i = 0;
struct dev_mc_list *mcptr = dev->mc_list;
for (i = 0; i < dev->mc_count; i++) {
memcpy(&priv->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
mcptr = mcptr->next;
}
return i;
}
static void lbs_set_multicast_list(struct net_device *dev)
{
struct lbs_private *priv = dev->priv;
int oldpacketfilter;
DECLARE_MAC_BUF(mac);
lbs_deb_enter(LBS_DEB_NET);
oldpacketfilter = priv->currentpacketfilter;
if (dev->flags & IFF_PROMISC) {
lbs_deb_net("enable promiscuous mode\n");
priv->currentpacketfilter |=
CMD_ACT_MAC_PROMISCUOUS_ENABLE;
priv->currentpacketfilter &=
~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
CMD_ACT_MAC_MULTICAST_ENABLE);
} else {
/* Multicast */
priv->currentpacketfilter &=
~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
if (dev->flags & IFF_ALLMULTI || dev->mc_count >
MRVDRV_MAX_MULTICAST_LIST_SIZE) {
lbs_deb_net( "enabling all multicast\n");
priv->currentpacketfilter |=
CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
priv->currentpacketfilter &=
~CMD_ACT_MAC_MULTICAST_ENABLE;
} else {
priv->currentpacketfilter &=
~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
if (!dev->mc_count) {
lbs_deb_net("no multicast addresses, "
"disabling multicast\n");
priv->currentpacketfilter &=
~CMD_ACT_MAC_MULTICAST_ENABLE;
} else {
int i;
priv->currentpacketfilter |=
CMD_ACT_MAC_MULTICAST_ENABLE;
priv->nr_of_multicastmacaddr =
lbs_copy_multicast_address(priv, dev);
lbs_deb_net("multicast addresses: %d\n",
dev->mc_count);
for (i = 0; i < dev->mc_count; i++) {
lbs_deb_net("Multicast address %d:%s\n",
i, print_mac(mac,
priv->multicastlist[i]));
}
/* send multicast addresses to firmware */
lbs_prepare_and_send_command(priv,
CMD_MAC_MULTICAST_ADR,
CMD_ACT_SET, 0, 0,
NULL);
}
}
}
if (priv->currentpacketfilter != oldpacketfilter) {
lbs_set_mac_packet_filter(priv);
}
lbs_deb_leave(LBS_DEB_NET);
}
/**
* @brief This function handles the major jobs in the LBS driver.
* It handles all events generated by firmware, RX data received
* from firmware and TX data sent from kernel.
*
* @param data A pointer to lbs_thread structure
* @return 0
*/
static int lbs_thread(void *data)
{
struct net_device *dev = data;
struct lbs_private *priv = dev->priv;
wait_queue_t wait;
u8 ireg = 0;
lbs_deb_enter(LBS_DEB_THREAD);
init_waitqueue_entry(&wait, current);
set_freezable();
for (;;) {
lbs_deb_thread( "main-thread 111: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
priv->intcounter, priv->currenttxskb, priv->dnld_sent);
add_wait_queue(&priv->waitq, &wait);
set_current_state(TASK_INTERRUPTIBLE);
spin_lock_irq(&priv->driver_lock);
if ((priv->psstate == PS_STATE_SLEEP) ||
(!priv->intcounter && (priv->dnld_sent || priv->cur_cmd || list_empty(&priv->cmdpendingq)))) {
lbs_deb_thread("main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
priv->connect_status, priv->intcounter,
priv->psmode, priv->psstate);
spin_unlock_irq(&priv->driver_lock);
schedule();
} else
spin_unlock_irq(&priv->driver_lock);
lbs_deb_thread("main-thread 222 (waking up): intcounter=%d currenttxskb=%p dnld_sent=%d\n",
priv->intcounter, priv->currenttxskb, priv->dnld_sent);
set_current_state(TASK_RUNNING);
remove_wait_queue(&priv->waitq, &wait);
try_to_freeze();
lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
priv->intcounter, priv->currenttxskb, priv->dnld_sent);
if (kthread_should_stop() || priv->surpriseremoved) {
lbs_deb_thread("main-thread: break from main thread: surpriseremoved=0x%x\n",
priv->surpriseremoved);
break;
}
spin_lock_irq(&priv->driver_lock);
if (priv->intcounter) {
u8 int_status;
priv->intcounter = 0;
int_status = priv->hw_get_int_status(priv, &ireg);
if (int_status) {
lbs_deb_thread("main-thread: reading HOST_INT_STATUS_REG failed\n");
spin_unlock_irq(&priv->driver_lock);
continue;
}
priv->hisregcpy |= ireg;
}
lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
priv->intcounter, priv->currenttxskb, priv->dnld_sent);
/* command response? */
if (priv->hisregcpy & MRVDRV_CMD_UPLD_RDY) {
lbs_deb_thread("main-thread: cmd response ready\n");
priv->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
spin_unlock_irq(&priv->driver_lock);
lbs_process_rx_command(priv);
spin_lock_irq(&priv->driver_lock);
}
/* Any Card Event */
if (priv->hisregcpy & MRVDRV_CARDEVENT) {
lbs_deb_thread("main-thread: Card Event Activity\n");
priv->hisregcpy &= ~MRVDRV_CARDEVENT;
if (priv->hw_read_event_cause(priv)) {
lbs_pr_alert("main-thread: hw_read_event_cause failed\n");
spin_unlock_irq(&priv->driver_lock);
continue;
}
spin_unlock_irq(&priv->driver_lock);
lbs_process_event(priv);
} else
spin_unlock_irq(&priv->driver_lock);
/* Check if we need to confirm Sleep Request received previously */
if (priv->psstate == PS_STATE_PRE_SLEEP &&
!priv->dnld_sent && !priv->cur_cmd) {
if (priv->connect_status == LBS_CONNECTED) {
lbs_deb_thread("main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p dnld_sent=%d cur_cmd=%p, confirm now\n",
priv->intcounter, priv->currenttxskb, priv->dnld_sent, priv->cur_cmd);
lbs_ps_confirm_sleep(priv, (u16) priv->psmode);
} else {
/* workaround for firmware sending
* deauth/linkloss event immediately
* after sleep request; remove this
* after firmware fixes it
*/
priv->psstate = PS_STATE_AWAKE;
lbs_pr_alert("main-thread: ignore PS_SleepConfirm in non-connected state\n");
}
}
/* The PS state is changed during processing of Sleep Request
* event above
*/
if ((priv->psstate == PS_STATE_SLEEP) ||
(priv->psstate == PS_STATE_PRE_SLEEP))
continue;
/* Execute the next command */
if (!priv->dnld_sent && !priv->cur_cmd)
lbs_execute_next_command(priv);
/* Wake-up command waiters which can't sleep in
* lbs_prepare_and_send_command
*/
if (!list_empty(&priv->cmdpendingq))
wake_up_all(&priv->cmd_pending);
}
del_timer(&priv->command_timer);
wake_up_all(&priv->cmd_pending);
lbs_deb_leave(LBS_DEB_THREAD);
return 0;
}
/**
* @brief This function downloads firmware image, gets
* HW spec from firmware and set basic parameters to
* firmware.
*
* @param priv A pointer to struct lbs_private structure
* @return 0 or -1
*/
static int lbs_setup_firmware(struct lbs_private *priv)
{
int ret = -1;
struct cmd_ds_mesh_access mesh_access;
lbs_deb_enter(LBS_DEB_FW);
/*
* Read MAC address from HW
*/
memset(priv->current_addr, 0xff, ETH_ALEN);
ret = lbs_prepare_and_send_command(priv, CMD_GET_HW_SPEC,
0, CMD_OPTION_WAITFORRSP, 0, NULL);
if (ret) {
ret = -1;
goto done;
}
lbs_set_mac_packet_filter(priv);
/* Get the supported Data rates */
ret = lbs_prepare_and_send_command(priv, CMD_802_11_DATA_RATE,
CMD_ACT_GET_TX_RATE,
CMD_OPTION_WAITFORRSP, 0, NULL);
if (ret) {
ret = -1;
goto done;
}
/* Disable mesh autostart */
if (priv->mesh_dev) {
memset(&mesh_access, 0, sizeof(mesh_access));
mesh_access.data[0] = cpu_to_le32(0);
ret = lbs_prepare_and_send_command(priv,
CMD_MESH_ACCESS,
CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
if (ret) {
ret = -1;
goto done;
}
priv->mesh_autostart_enabled = 0;
}
ret = 0;
done:
lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
return ret;
}
/**
* This function handles the timeout of command sending.
* It will re-send the same command again.
*/
static void command_timer_fn(unsigned long data)
{
struct lbs_private *priv = (struct lbs_private *)data;
struct cmd_ctrl_node *ptempnode;
struct cmd_ds_command *cmd;
unsigned long flags;
ptempnode = priv->cur_cmd;
if (ptempnode == NULL) {
lbs_deb_fw("ptempnode empty\n");
return;
}
cmd = (struct cmd_ds_command *)ptempnode->bufvirtualaddr;
if (!cmd) {
lbs_deb_fw("cmd is NULL\n");
return;
}
lbs_deb_fw("command_timer_fn fired, cmd %x\n", cmd->command);
if (!priv->fw_ready)
return;
spin_lock_irqsave(&priv->driver_lock, flags);
priv->cur_cmd = NULL;
spin_unlock_irqrestore(&priv->driver_lock, flags);
lbs_deb_fw("re-sending same command because of timeout\n");
lbs_queue_cmd(priv, ptempnode, 0);
wake_up_interruptible(&priv->waitq);
return;
}
static int lbs_init_adapter(struct lbs_private *priv)
{
size_t bufsize;
int i, ret = 0;
/* Allocate buffer to store the BSSID list */
bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
priv->networks = kzalloc(bufsize, GFP_KERNEL);
if (!priv->networks) {
lbs_pr_err("Out of memory allocating beacons\n");
ret = -1;
goto out;
}
/* Initialize scan result lists */
INIT_LIST_HEAD(&priv->network_free_list);
INIT_LIST_HEAD(&priv->network_list);
for (i = 0; i < MAX_NETWORK_COUNT; i++) {
list_add_tail(&priv->networks[i].list,
&priv->network_free_list);
}
priv->lbs_ps_confirm_sleep.seqnum = cpu_to_le16(++priv->seqnum);
priv->lbs_ps_confirm_sleep.command =
cpu_to_le16(CMD_802_11_PS_MODE);
priv->lbs_ps_confirm_sleep.size =
cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep));
priv->lbs_ps_confirm_sleep.action =
cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
memset(priv->current_addr, 0xff, ETH_ALEN);
priv->connect_status = LBS_DISCONNECTED;
priv->mesh_connect_status = LBS_DISCONNECTED;
priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
priv->mode = IW_MODE_INFRA;
priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
priv->currentpacketfilter = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
priv->radioon = RADIO_ON;
priv->auto_rate = 1;
priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
priv->psmode = LBS802_11POWERMODECAM;
priv->psstate = PS_STATE_FULL_POWER;
mutex_init(&priv->lock);
setup_timer(&priv->command_timer, command_timer_fn,
(unsigned long)priv);
INIT_LIST_HEAD(&priv->cmdfreeq);
INIT_LIST_HEAD(&priv->cmdpendingq);
spin_lock_init(&priv->driver_lock);
init_waitqueue_head(&priv->cmd_pending);
/* Allocate the command buffers */
if (lbs_allocate_cmd_buffer(priv)) {
lbs_pr_err("Out of memory allocating command buffers\n");
ret = -1;
}
out:
return ret;
}
static void lbs_free_adapter(struct lbs_private *priv)
{
lbs_deb_fw("free command buffer\n");
lbs_free_cmd_buffer(priv);
lbs_deb_fw("free command_timer\n");
del_timer(&priv->command_timer);
lbs_deb_fw("free scan results table\n");
kfree(priv->networks);
priv->networks = NULL;
}
/**
* @brief This function adds the card. it will probe the
* card, allocate the lbs_priv and initialize the device.
*
* @param card A pointer to card
* @return A pointer to struct lbs_private structure
*/
struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
{
struct net_device *dev = NULL;
struct lbs_private *priv = NULL;
lbs_deb_enter(LBS_DEB_NET);
/* Allocate an Ethernet device and register it */
dev = alloc_etherdev(sizeof(struct lbs_private));
if (!dev) {
lbs_pr_err("init ethX device failed\n");
goto done;
}
priv = dev->priv;
if (lbs_init_adapter(priv)) {
lbs_pr_err("failed to initialize adapter structure.\n");
goto err_init_adapter;
}
priv->dev = dev;
priv->card = card;
priv->mesh_open = 0;
priv->infra_open = 0;
/* Setup the OS Interface to our functions */
dev->open = lbs_open;
dev->hard_start_xmit = lbs_pre_start_xmit;
dev->stop = lbs_close;
dev->set_mac_address = lbs_set_mac_address;
dev->tx_timeout = lbs_tx_timeout;
dev->get_stats = lbs_get_stats;
dev->watchdog_timeo = 5 * HZ;
dev->ethtool_ops = &lbs_ethtool_ops;
#ifdef WIRELESS_EXT
dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
#endif
dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
dev->set_multicast_list = lbs_set_multicast_list;
SET_NETDEV_DEV(dev, dmdev);
priv->rtap_net_dev = NULL;
lbs_deb_thread("Starting main thread...\n");
init_waitqueue_head(&priv->waitq);
priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
if (IS_ERR(priv->main_thread)) {
lbs_deb_thread("Error creating main thread.\n");
goto err_init_adapter;
}
priv->work_thread = create_singlethread_workqueue("lbs_worker");
INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
INIT_WORK(&priv->sync_channel, lbs_sync_channel);
goto done;
err_init_adapter:
lbs_free_adapter(priv);
free_netdev(dev);
priv = NULL;
done:
lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
return priv;
}
EXPORT_SYMBOL_GPL(lbs_add_card);
int lbs_remove_card(struct lbs_private *priv)
{
struct net_device *dev = priv->dev;
union iwreq_data wrqu;
lbs_deb_enter(LBS_DEB_MAIN);
lbs_remove_rtap(priv);
dev = priv->dev;
device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
cancel_delayed_work(&priv->scan_work);
cancel_delayed_work(&priv->assoc_work);
destroy_workqueue(priv->work_thread);
if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
priv->psmode = LBS802_11POWERMODECAM;
lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
}
memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
wrqu.ap_addr.sa_family = ARPHRD_ETHER;
wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
/* Stop the thread servicing the interrupts */
priv->surpriseremoved = 1;
kthread_stop(priv->main_thread);
lbs_free_adapter(priv);
priv->dev = NULL;
free_netdev(dev);
lbs_deb_leave(LBS_DEB_MAIN);
return 0;
}
EXPORT_SYMBOL_GPL(lbs_remove_card);
int lbs_start_card(struct lbs_private *priv)
{
struct net_device *dev = priv->dev;
int ret = -1;
lbs_deb_enter(LBS_DEB_MAIN);
/* poke the firmware */
ret = lbs_setup_firmware(priv);
if (ret)
goto done;
/* init 802.11d */
lbs_init_11d(priv);
if (register_netdev(dev)) {
lbs_pr_err("cannot register ethX device\n");
goto done;
}
if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
lbs_pr_err("cannot register lbs_rtap attribute\n");
lbs_debugfs_init_one(priv, dev);
lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
ret = 0;
done:
lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
return ret;
}
EXPORT_SYMBOL_GPL(lbs_start_card);
int lbs_stop_card(struct lbs_private *priv)
{
struct net_device *dev = priv->dev;
int ret = -1;
struct cmd_ctrl_node *cmdnode;
unsigned long flags;
lbs_deb_enter(LBS_DEB_MAIN);
netif_stop_queue(priv->dev);
netif_carrier_off(priv->dev);
lbs_debugfs_remove_one(priv);
/* Flush pending command nodes */
spin_lock_irqsave(&priv->driver_lock, flags);
list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
cmdnode->cmdwaitqwoken = 1;
wake_up_interruptible(&cmdnode->cmdwait_q);
}
spin_unlock_irqrestore(&priv->driver_lock, flags);
unregister_netdev(dev);
lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
return ret;
}
EXPORT_SYMBOL_GPL(lbs_stop_card);
/**
* @brief This function adds mshX interface
*
* @param priv A pointer to the struct lbs_private structure
* @return 0 if successful, -X otherwise
*/
int lbs_add_mesh(struct lbs_private *priv, struct device *dev)
{
struct net_device *mesh_dev = NULL;
int ret = 0;
lbs_deb_enter(LBS_DEB_MESH);
/* Allocate a virtual mesh device */
if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
lbs_deb_mesh("init mshX device failed\n");
ret = -ENOMEM;
goto done;
}
mesh_dev->priv = priv;
priv->mesh_dev = mesh_dev;
mesh_dev->open = lbs_mesh_open;
mesh_dev->hard_start_xmit = lbs_mesh_pre_start_xmit;
mesh_dev->stop = lbs_mesh_close;
mesh_dev->get_stats = lbs_get_stats;
mesh_dev->set_mac_address = lbs_set_mac_address;
mesh_dev->ethtool_ops = &lbs_ethtool_ops;
memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
sizeof(priv->dev->dev_addr));
SET_NETDEV_DEV(priv->mesh_dev, dev);
#ifdef WIRELESS_EXT
mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
#endif
/* Register virtual mesh interface */
ret = register_netdev(mesh_dev);
if (ret) {
lbs_pr_err("cannot register mshX virtual interface\n");
goto err_free;
}
ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
if (ret)
goto err_unregister;
/* Everything successful */
ret = 0;
goto done;
err_unregister:
unregister_netdev(mesh_dev);
err_free:
free_netdev(mesh_dev);
done:
lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
return ret;
}
EXPORT_SYMBOL_GPL(lbs_add_mesh);
void lbs_remove_mesh(struct lbs_private *priv)
{
struct net_device *mesh_dev;
lbs_deb_enter(LBS_DEB_MAIN);
if (!priv)
goto out;
mesh_dev = priv->mesh_dev;
netif_stop_queue(mesh_dev);
netif_carrier_off(priv->mesh_dev);
sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
unregister_netdev(mesh_dev);
priv->mesh_dev = NULL ;
free_netdev(mesh_dev);
out:
lbs_deb_leave(LBS_DEB_MAIN);
}
EXPORT_SYMBOL_GPL(lbs_remove_mesh);
/**
* @brief This function finds the CFP in
* region_cfp_table based on region and band parameter.
*
* @param region The region code
* @param band The band
* @param cfp_no A pointer to CFP number
* @return A pointer to CFP
*/
struct chan_freq_power *lbs_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
{
int i, end;
lbs_deb_enter(LBS_DEB_MAIN);
end = ARRAY_SIZE(region_cfp_table);
for (i = 0; i < end ; i++) {
lbs_deb_main("region_cfp_table[i].region=%d\n",
region_cfp_table[i].region);
if (region_cfp_table[i].region == region) {
*cfp_no = region_cfp_table[i].cfp_no_BG;
lbs_deb_leave(LBS_DEB_MAIN);
return region_cfp_table[i].cfp_BG;
}
}
lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
return NULL;
}
int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
{
int ret = 0;
int i = 0;
struct chan_freq_power *cfp;
int cfp_no;
lbs_deb_enter(LBS_DEB_MAIN);
memset(priv->region_channel, 0, sizeof(priv->region_channel));
{
cfp = lbs_get_region_cfp_table(region, band, &cfp_no);
if (cfp != NULL) {
priv->region_channel[i].nrcfp = cfp_no;
priv->region_channel[i].CFP = cfp;
} else {
lbs_deb_main("wrong region code %#x in band B/G\n",
region);
ret = -1;
goto out;
}
priv->region_channel[i].valid = 1;
priv->region_channel[i].region = region;
priv->region_channel[i].band = band;
i++;
}
out:
lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
return ret;
}
/**
* @brief This function handles the interrupt. it will change PS
* state if applicable. it will wake up main_thread to handle
* the interrupt event as well.
*
* @param dev A pointer to net_device structure
* @return n/a
*/
void lbs_interrupt(struct net_device *dev)
{
struct lbs_private *priv = dev->priv;
lbs_deb_enter(LBS_DEB_THREAD);
lbs_deb_thread("lbs_interrupt: intcounter=%d\n",
priv->intcounter);
priv->intcounter++;
if (priv->psstate == PS_STATE_SLEEP) {
priv->psstate = PS_STATE_AWAKE;
netif_wake_queue(dev);
if (priv->mesh_dev)
netif_wake_queue(priv->mesh_dev);
}
wake_up_interruptible(&priv->waitq);
lbs_deb_leave(LBS_DEB_THREAD);
}
EXPORT_SYMBOL_GPL(lbs_interrupt);
int lbs_reset_device(struct lbs_private *priv)
{
int ret;
lbs_deb_enter(LBS_DEB_MAIN);
ret = lbs_prepare_and_send_command(priv, CMD_802_11_RESET,
CMD_ACT_HALT, 0, 0, NULL);
msleep_interruptible(10);
lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
return ret;
}
EXPORT_SYMBOL_GPL(lbs_reset_device);
static int __init lbs_init_module(void)
{
lbs_deb_enter(LBS_DEB_MAIN);
lbs_debugfs_init();
lbs_deb_leave(LBS_DEB_MAIN);
return 0;
}
static void __exit lbs_exit_module(void)
{
lbs_deb_enter(LBS_DEB_MAIN);
lbs_debugfs_remove();
lbs_deb_leave(LBS_DEB_MAIN);
}
/*
* rtap interface support fuctions
*/
static int lbs_rtap_open(struct net_device *dev)
{
netif_carrier_off(dev);
netif_stop_queue(dev);
return 0;
}
static int lbs_rtap_stop(struct net_device *dev)
{
return 0;
}
static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
netif_stop_queue(dev);
return -EOPNOTSUPP;
}
static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
{
struct lbs_private *priv = dev->priv;
return &priv->ieee->stats;
}
void lbs_remove_rtap(struct lbs_private *priv)
{
if (priv->rtap_net_dev == NULL)
return;
unregister_netdev(priv->rtap_net_dev);
free_ieee80211(priv->rtap_net_dev);
priv->rtap_net_dev = NULL;
}
int lbs_add_rtap(struct lbs_private *priv)
{
int rc = 0;
if (priv->rtap_net_dev)
return -EPERM;
priv->rtap_net_dev = alloc_ieee80211(0);
if (priv->rtap_net_dev == NULL)
return -ENOMEM;
priv->ieee = netdev_priv(priv->rtap_net_dev);
strcpy(priv->rtap_net_dev->name, "rtap%d");
priv->rtap_net_dev->type = ARPHRD_IEEE80211_RADIOTAP;
priv->rtap_net_dev->open = lbs_rtap_open;
priv->rtap_net_dev->stop = lbs_rtap_stop;
priv->rtap_net_dev->get_stats = lbs_rtap_get_stats;
priv->rtap_net_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
priv->rtap_net_dev->set_multicast_list = lbs_set_multicast_list;
priv->rtap_net_dev->priv = priv;
priv->ieee->iw_mode = IW_MODE_MONITOR;
rc = register_netdev(priv->rtap_net_dev);
if (rc) {
free_ieee80211(priv->rtap_net_dev);
priv->rtap_net_dev = NULL;
return rc;
}
return 0;
}
module_init(lbs_init_module);
module_exit(lbs_exit_module);
MODULE_DESCRIPTION("Libertas WLAN Driver Library");
MODULE_AUTHOR("Marvell International Ltd.");
MODULE_LICENSE("GPL");
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