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android_kernel_xiaomi_sm8350/drivers/net/wireless/libertas/main.c
Holger Schurig 57962f0b9d libertas: reduce command retry time 
[PATCH, take 2] libertas: reduce command retry time

In the normal case, an unsuccessful command would be retried for 10*5 seconds,
or 10*10 seconds in the worst case. This patch reduces this to 3*3 seconds,
or 3*10 seconds in the worst case.

I also reduced the time it takes to start a new command downloaded.

Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-05-21 21:47:46 -04:00

1654 lines
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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/etherdevice.h>
#include <linux/netdevice.h>
#include <linux/if_arp.h>
#include <linux/kthread.h>
#include <linux/kfifo.h>
#include <linux/stddef.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 "scan.h"
#include "assoc.h"
#include "cmd.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);
/* This global structure is used to send the confirm_sleep command as
* fast as possible down to the firmware. */
struct cmd_confirm_sleep confirm_sleep;
#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 lbs_private *priv = to_net_dev(dev)->priv;
struct cmd_ds_mesh_access mesh_access;
int ret;
memset(&mesh_access, 0, sizeof(mesh_access));
ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_ANYCAST, &mesh_access);
if (ret)
return ret;
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 lbs_private *priv = to_net_dev(dev)->priv;
struct cmd_ds_mesh_access mesh_access;
uint32_t datum;
int ret;
memset(&mesh_access, 0, sizeof(mesh_access));
sscanf(buf, "%x", &datum);
mesh_access.data[0] = cpu_to_le32(datum);
ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_ANYCAST, &mesh_access);
if (ret)
return ret;
return strlen(buf);
}
static int lbs_add_rtap(struct lbs_private *priv);
static void lbs_remove_rtap(struct lbs_private *priv);
static int lbs_add_mesh(struct lbs_private *priv);
static void lbs_remove_mesh(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) {
if (priv->monitormode == monitor_mode)
return strlen(buf);
if (!priv->monitormode) {
if (priv->infra_open || priv->mesh_open)
return -EBUSY;
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)
return strlen(buf);
priv->monitormode = 0;
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 ethX interface
* through sysfs (/sys/class/net/ethX/lbs_rtap)
*/
static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get, lbs_rtap_set );
/**
* Get function for sysfs attribute mesh
*/
static ssize_t lbs_mesh_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->mesh_dev);
}
/**
* Set function for sysfs attribute mesh
*/
static ssize_t lbs_mesh_set(struct device *dev,
struct device_attribute *attr, const char * buf, size_t count)
{
struct lbs_private *priv = to_net_dev(dev)->priv;
int enable;
int ret, action = CMD_ACT_MESH_CONFIG_STOP;
sscanf(buf, "%x", &enable);
enable = !!enable;
if (enable == !!priv->mesh_dev)
return count;
if (enable)
action = CMD_ACT_MESH_CONFIG_START;
ret = lbs_mesh_config(priv, action, priv->curbssparams.channel);
if (ret)
return ret;
if (enable)
lbs_add_mesh(priv);
else
lbs_remove_mesh(priv);
return count;
}
/**
* lbs_mesh attribute to be exported per ethX interface
* through sysfs (/sys/class/net/ethX/lbs_mesh)
*/
static DEVICE_ATTR(lbs_mesh, 0644, lbs_mesh_get, lbs_mesh_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 struct attribute *lbs_mesh_sysfs_entries[] = {
&dev_attr_anycast_mask.attr,
NULL,
};
static struct attribute_group lbs_mesh_attr_group = {
.attrs = lbs_mesh_sysfs_entries,
};
/**
* @brief This function opens the ethX or mshX interface
*
* @param dev A pointer to net_device structure
* @return 0 or -EBUSY if monitor mode active
*/
static int lbs_dev_open(struct net_device *dev)
{
struct lbs_private *priv = (struct lbs_private *) dev->priv ;
int ret = 0;
lbs_deb_enter(LBS_DEB_NET);
spin_lock_irq(&priv->driver_lock);
if (priv->monitormode) {
ret = -EBUSY;
goto out;
}
if (dev == priv->mesh_dev) {
priv->mesh_open = 1;
priv->mesh_connect_status = LBS_CONNECTED;
netif_carrier_on(dev);
} else {
priv->infra_open = 1;
if (priv->connect_status == LBS_CONNECTED)
netif_carrier_on(dev);
else
netif_carrier_off(dev);
}
if (!priv->tx_pending_len)
netif_wake_queue(dev);
out:
spin_unlock_irq(&priv->driver_lock);
lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
return ret;
}
/**
* @brief This function closes the mshX interface
*
* @param dev A pointer to net_device structure
* @return 0
*/
static int lbs_mesh_stop(struct net_device *dev)
{
struct lbs_private *priv = (struct lbs_private *) (dev->priv);
lbs_deb_enter(LBS_DEB_MESH);
spin_lock_irq(&priv->driver_lock);
priv->mesh_open = 0;
priv->mesh_connect_status = LBS_DISCONNECTED;
netif_stop_queue(dev);
netif_carrier_off(dev);
spin_unlock_irq(&priv->driver_lock);
schedule_work(&priv->mcast_work);
lbs_deb_leave(LBS_DEB_MESH);
return 0;
}
/**
* @brief This function closes the ethX interface
*
* @param dev A pointer to net_device structure
* @return 0
*/
static int lbs_eth_stop(struct net_device *dev)
{
struct lbs_private *priv = (struct lbs_private *) dev->priv;
lbs_deb_enter(LBS_DEB_NET);
spin_lock_irq(&priv->driver_lock);
priv->infra_open = 0;
netif_stop_queue(dev);
spin_unlock_irq(&priv->driver_lock);
schedule_work(&priv->mcast_work);
lbs_deb_leave(LBS_DEB_NET);
return 0;
}
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)
lbs_send_tx_feedback(priv, 0);
/* XX: Shouldn't we also call into the hw-specific driver
to kick it somehow? */
lbs_host_to_card_done(priv);
/* More often than not, this actually happens because the
firmware has crapped itself -- rather than just a very
busy medium. So send a harmless command, and if/when
_that_ times out, we'll kick it in the head. */
lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
0, 0, NULL);
lbs_deb_leave(LBS_DEB_TX);
}
void lbs_host_to_card_done(struct lbs_private *priv)
{
unsigned long flags;
lbs_deb_enter(LBS_DEB_THREAD);
spin_lock_irqsave(&priv->driver_lock, flags);
priv->dnld_sent = DNLD_RES_RECEIVED;
/* Wake main thread if commands are pending */
if (!priv->cur_cmd || priv->tx_pending_len > 0)
wake_up_interruptible(&priv->waitq);
spin_unlock_irqrestore(&priv->driver_lock, flags);
lbs_deb_leave(LBS_DEB_THREAD);
}
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;
lbs_deb_enter(LBS_DEB_NET);
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;
struct cmd_ds_802_11_mac_address cmd;
lbs_deb_enter(LBS_DEB_NET);
/* In case it was called from the mesh device */
dev = priv->dev;
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
cmd.action = cpu_to_le16(CMD_ACT_SET);
memcpy(cmd.macadd, phwaddr->sa_data, ETH_ALEN);
ret = lbs_cmd_with_response(priv, CMD_802_11_MAC_ADDRESS, &cmd);
if (ret) {
lbs_deb_net("set MAC address failed\n");
goto done;
}
memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
memcpy(dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
if (priv->mesh_dev)
memcpy(priv->mesh_dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
done:
lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
return ret;
}
static inline int mac_in_list(unsigned char *list, int list_len,
unsigned char *mac)
{
while (list_len) {
if (!memcmp(list, mac, ETH_ALEN))
return 1;
list += ETH_ALEN;
list_len--;
}
return 0;
}
static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr *cmd,
struct net_device *dev, int nr_addrs)
{
int i = nr_addrs;
struct dev_mc_list *mc_list;
DECLARE_MAC_BUF(mac);
if ((dev->flags & (IFF_UP|IFF_MULTICAST)) != (IFF_UP|IFF_MULTICAST))
return nr_addrs;
netif_tx_lock_bh(dev);
for (mc_list = dev->mc_list; mc_list; mc_list = mc_list->next) {
if (mac_in_list(cmd->maclist, nr_addrs, mc_list->dmi_addr)) {
lbs_deb_net("mcast address %s:%s skipped\n", dev->name,
print_mac(mac, mc_list->dmi_addr));
continue;
}
if (i == MRVDRV_MAX_MULTICAST_LIST_SIZE)
break;
memcpy(&cmd->maclist[6*i], mc_list->dmi_addr, ETH_ALEN);
lbs_deb_net("mcast address %s:%s added to filter\n", dev->name,
print_mac(mac, mc_list->dmi_addr));
i++;
}
netif_tx_unlock_bh(dev);
if (mc_list)
return -EOVERFLOW;
return i;
}
static void lbs_set_mcast_worker(struct work_struct *work)
{
struct lbs_private *priv = container_of(work, struct lbs_private, mcast_work);
struct cmd_ds_mac_multicast_adr mcast_cmd;
int dev_flags;
int nr_addrs;
int old_mac_control = priv->mac_control;
lbs_deb_enter(LBS_DEB_NET);
dev_flags = priv->dev->flags;
if (priv->mesh_dev)
dev_flags |= priv->mesh_dev->flags;
if (dev_flags & IFF_PROMISC) {
priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;
priv->mac_control &= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
CMD_ACT_MAC_MULTICAST_ENABLE);
goto out_set_mac_control;
} else if (dev_flags & IFF_ALLMULTI) {
do_allmulti:
priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
CMD_ACT_MAC_MULTICAST_ENABLE);
goto out_set_mac_control;
}
/* Once for priv->dev, again for priv->mesh_dev if it exists */
nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->dev, 0);
if (nr_addrs >= 0 && priv->mesh_dev)
nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->mesh_dev, nr_addrs);
if (nr_addrs < 0)
goto do_allmulti;
if (nr_addrs) {
int size = offsetof(struct cmd_ds_mac_multicast_adr,
maclist[6*nr_addrs]);
mcast_cmd.action = cpu_to_le16(CMD_ACT_SET);
mcast_cmd.hdr.size = cpu_to_le16(size);
mcast_cmd.nr_of_adrs = cpu_to_le16(nr_addrs);
lbs_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &mcast_cmd.hdr, size);
priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
} else
priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
out_set_mac_control:
if (priv->mac_control != old_mac_control)
lbs_set_mac_control(priv);
lbs_deb_leave(LBS_DEB_NET);
}
static void lbs_set_multicast_list(struct net_device *dev)
{
struct lbs_private *priv = dev->priv;
schedule_work(&priv->mcast_work);
}
/**
* @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;
lbs_deb_enter(LBS_DEB_THREAD);
init_waitqueue_entry(&wait, current);
for (;;) {
int shouldsleep;
u8 resp_idx;
lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n",
priv->currenttxskb, priv->dnld_sent);
add_wait_queue(&priv->waitq, &wait);
set_current_state(TASK_INTERRUPTIBLE);
spin_lock_irq(&priv->driver_lock);
if (kthread_should_stop())
shouldsleep = 0; /* Bye */
else if (priv->surpriseremoved)
shouldsleep = 1; /* We need to wait until we're _told_ to die */
else if (priv->psstate == PS_STATE_SLEEP)
shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */
else if (priv->cmd_timed_out)
shouldsleep = 0; /* Command timed out. Recover */
else if (!priv->fw_ready)
shouldsleep = 1; /* Firmware not ready. We're waiting for it */
else if (priv->dnld_sent)
shouldsleep = 1; /* Something is en route to the device already */
else if (priv->tx_pending_len > 0)
shouldsleep = 0; /* We've a packet to send */
else if (priv->cur_cmd)
shouldsleep = 1; /* Can't send a command; one already running */
else if (!list_empty(&priv->cmdpendingq))
shouldsleep = 0; /* We have a command to send */
else if (__kfifo_len(priv->event_fifo))
shouldsleep = 0; /* We have an event to process */
else if (priv->resp_len[priv->resp_idx])
shouldsleep = 0; /* We have a command response */
else
shouldsleep = 1; /* No command */
if (shouldsleep) {
lbs_deb_thread("sleeping, connect_status %d, "
"psmode %d, psstate %d\n",
priv->connect_status,
priv->psmode, priv->psstate);
spin_unlock_irq(&priv->driver_lock);
schedule();
} else
spin_unlock_irq(&priv->driver_lock);
lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",
priv->currenttxskb, priv->dnld_sent);
set_current_state(TASK_RUNNING);
remove_wait_queue(&priv->waitq, &wait);
lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
priv->currenttxskb, priv->dnld_sent);
if (kthread_should_stop()) {
lbs_deb_thread("break from main thread\n");
break;
}
if (priv->surpriseremoved) {
lbs_deb_thread("adapter removed; waiting to die...\n");
continue;
}
lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
priv->currenttxskb, priv->dnld_sent);
spin_lock_irq(&priv->driver_lock);
/* Process any pending command response */
resp_idx = priv->resp_idx;
if (priv->resp_len[resp_idx]) {
spin_unlock_irq(&priv->driver_lock);
lbs_process_command_response(priv,
priv->resp_buf[resp_idx],
priv->resp_len[resp_idx]);
spin_lock_irq(&priv->driver_lock);
priv->resp_len[resp_idx] = 0;
}
spin_unlock_irq(&priv->driver_lock);
/* command timeout stuff */
if (priv->cmd_timed_out && priv->cur_cmd) {
struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
if (++priv->nr_retries > 3) {
lbs_pr_info("Excessive timeouts submitting "
"command 0x%04x\n",
le16_to_cpu(cmdnode->cmdbuf->command));
lbs_complete_command(priv, cmdnode, -ETIMEDOUT);
priv->nr_retries = 0;
if (priv->reset_card) {
spin_unlock_irq(&priv->driver_lock);
priv->reset_card(priv);
spin_lock_irq(&priv->driver_lock);
}
} else {
priv->cur_cmd = NULL;
lbs_pr_info("requeueing command 0x%04x due "
"to timeout (#%d)\n",
le16_to_cpu(cmdnode->cmdbuf->command),
priv->nr_retries);
/* Stick it back at the _top_ of the pending queue
for immediate resubmission */
list_add(&cmdnode->list, &priv->cmdpendingq);
}
}
priv->cmd_timed_out = 0;
/* Process hardware events, e.g. card removed, link lost */
spin_lock_irq(&priv->driver_lock);
while (__kfifo_len(priv->event_fifo)) {
u32 event;
__kfifo_get(priv->event_fifo, (unsigned char *) &event,
sizeof(event));
spin_unlock_irq(&priv->driver_lock);
lbs_process_event(priv, event);
spin_lock_irq(&priv->driver_lock);
}
spin_unlock_irq(&priv->driver_lock);
if (!priv->fw_ready)
continue;
/* 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("pre-sleep, currenttxskb %p, "
"dnld_sent %d, cur_cmd %p\n",
priv->currenttxskb, priv->dnld_sent,
priv->cur_cmd);
lbs_ps_confirm_sleep(priv);
} 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("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);
spin_lock_irq(&priv->driver_lock);
if (!priv->dnld_sent && priv->tx_pending_len > 0) {
int ret = priv->hw_host_to_card(priv, MVMS_DAT,
priv->tx_pending_buf,
priv->tx_pending_len);
if (ret) {
lbs_deb_tx("host_to_card failed %d\n", ret);
priv->dnld_sent = DNLD_RES_RECEIVED;
}
priv->tx_pending_len = 0;
if (!priv->currenttxskb) {
/* We can wake the queues immediately if we aren't
waiting for TX feedback */
if (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_irq(&priv->driver_lock);
}
del_timer(&priv->command_timer);
wake_up_all(&priv->cmd_pending);
lbs_deb_leave(LBS_DEB_THREAD);
return 0;
}
static int lbs_suspend_callback(struct lbs_private *priv, unsigned long dummy,
struct cmd_header *cmd)
{
lbs_deb_enter(LBS_DEB_FW);
netif_device_detach(priv->dev);
if (priv->mesh_dev)
netif_device_detach(priv->mesh_dev);
priv->fw_ready = 0;
lbs_deb_leave(LBS_DEB_FW);
return 0;
}
int lbs_suspend(struct lbs_private *priv)
{
struct cmd_header cmd;
int ret;
lbs_deb_enter(LBS_DEB_FW);
if (priv->wol_criteria == 0xffffffff) {
lbs_pr_info("Suspend attempt without configuring wake params!\n");
return -EINVAL;
}
memset(&cmd, 0, sizeof(cmd));
ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_ACTIVATE, &cmd,
sizeof(cmd), lbs_suspend_callback, 0);
if (ret)
lbs_pr_info("HOST_SLEEP_ACTIVATE failed: %d\n", ret);
lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
return ret;
}
EXPORT_SYMBOL_GPL(lbs_suspend);
void lbs_resume(struct lbs_private *priv)
{
lbs_deb_enter(LBS_DEB_FW);
priv->fw_ready = 1;
/* Firmware doesn't seem to give us RX packets any more
until we send it some command. Might as well update */
lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
0, 0, NULL);
netif_device_attach(priv->dev);
if (priv->mesh_dev)
netif_device_attach(priv->mesh_dev);
lbs_deb_leave(LBS_DEB_FW);
}
EXPORT_SYMBOL_GPL(lbs_resume);
/**
* @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;
lbs_deb_enter(LBS_DEB_FW);
/*
* Read MAC address from HW
*/
memset(priv->current_addr, 0xff, ETH_ALEN);
ret = lbs_update_hw_spec(priv);
if (ret)
goto done;
lbs_set_mac_control(priv);
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;
unsigned long flags;
lbs_deb_enter(LBS_DEB_CMD);
spin_lock_irqsave(&priv->driver_lock, flags);
if (!priv->cur_cmd)
goto out;
lbs_pr_info("command 0x%04x timed out\n",
le16_to_cpu(priv->cur_cmd->cmdbuf->command));
priv->cmd_timed_out = 1;
wake_up_interruptible(&priv->waitq);
out:
spin_unlock_irqrestore(&priv->driver_lock, flags);
lbs_deb_leave(LBS_DEB_CMD);
}
static void lbs_sync_channel_worker(struct work_struct *work)
{
struct lbs_private *priv = container_of(work, struct lbs_private,
sync_channel);
lbs_deb_enter(LBS_DEB_MAIN);
if (lbs_update_channel(priv))
lbs_pr_info("Channel synchronization failed.");
lbs_deb_leave(LBS_DEB_MAIN);
}
static int lbs_init_adapter(struct lbs_private *priv)
{
size_t bufsize;
int i, ret = 0;
lbs_deb_enter(LBS_DEB_MAIN);
/* 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);
}
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->mac_control = 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 = -ENOMEM;
goto out;
}
priv->resp_idx = 0;
priv->resp_len[0] = priv->resp_len[1] = 0;
/* Create the event FIFO */
priv->event_fifo = kfifo_alloc(sizeof(u32) * 16, GFP_KERNEL, NULL);
if (IS_ERR(priv->event_fifo)) {
lbs_pr_err("Out of memory allocating event FIFO buffer\n");
ret = -ENOMEM;
goto out;
}
out:
lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
return ret;
}
static void lbs_free_adapter(struct lbs_private *priv)
{
lbs_deb_enter(LBS_DEB_MAIN);
lbs_free_cmd_buffer(priv);
if (priv->event_fifo)
kfifo_free(priv->event_fifo);
del_timer(&priv->command_timer);
kfree(priv->networks);
priv->networks = NULL;
lbs_deb_leave(LBS_DEB_MAIN);
}
/**
* @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_MAIN);
/* 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_dev_open;
dev->hard_start_xmit = lbs_hard_start_xmit;
dev->stop = lbs_eth_stop;
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->mcast_work, lbs_set_mcast_worker);
INIT_WORK(&priv->sync_channel, lbs_sync_channel_worker);
sprintf(priv->mesh_ssid, "mesh");
priv->mesh_ssid_len = 4;
priv->wol_criteria = 0xffffffff;
priv->wol_gpio = 0xff;
goto done;
err_init_adapter:
lbs_free_adapter(priv);
free_netdev(dev);
priv = NULL;
done:
lbs_deb_leave_args(LBS_DEB_MAIN, "priv %p", priv);
return priv;
}
EXPORT_SYMBOL_GPL(lbs_add_card);
void 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_mesh(priv);
lbs_remove_rtap(priv);
dev = priv->dev;
cancel_delayed_work_sync(&priv->scan_work);
cancel_delayed_work_sync(&priv->assoc_work);
cancel_work_sync(&priv->mcast_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);
}
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_update_channel(priv);
/* 5.0.16p0 is known to NOT support any mesh */
if (priv->fwrelease > 0x05001000) {
/* Enable mesh, if supported, and work out which TLV it uses.
0x100 + 291 is an unofficial value used in 5.110.20.pXX
0x100 + 37 is the official value used in 5.110.21.pXX
but we check them in that order because 20.pXX doesn't
give an error -- it just silently fails. */
/* 5.110.20.pXX firmware will fail the command if the channel
doesn't match the existing channel. But only if the TLV
is correct. If the channel is wrong, _BOTH_ versions will
give an error to 0x100+291, and allow 0x100+37 to succeed.
It's just that 5.110.20.pXX will not have done anything
useful */
priv->mesh_tlv = 0x100 + 291;
if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
priv->curbssparams.channel)) {
priv->mesh_tlv = 0x100 + 37;
if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
priv->curbssparams.channel))
priv->mesh_tlv = 0;
}
if (priv->mesh_tlv) {
lbs_add_mesh(priv);
if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
lbs_pr_err("cannot register lbs_mesh 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);
void lbs_stop_card(struct lbs_private *priv)
{
struct net_device *dev = priv->dev;
struct cmd_ctrl_node *cmdnode;
unsigned long flags;
lbs_deb_enter(LBS_DEB_MAIN);
if (!priv)
goto out;
netif_stop_queue(priv->dev);
netif_carrier_off(priv->dev);
lbs_debugfs_remove_one(priv);
device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
if (priv->mesh_tlv) {
device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
}
/* Flush pending command nodes */
del_timer_sync(&priv->command_timer);
spin_lock_irqsave(&priv->driver_lock, flags);
list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
cmdnode->result = -ENOENT;
cmdnode->cmdwaitqwoken = 1;
wake_up_interruptible(&cmdnode->cmdwait_q);
}
spin_unlock_irqrestore(&priv->driver_lock, flags);
unregister_netdev(dev);
out:
lbs_deb_leave(LBS_DEB_MAIN);
}
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
*/
static int lbs_add_mesh(struct lbs_private *priv)
{
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_dev_open;
mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
mesh_dev->stop = lbs_mesh_stop;
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, priv->dev->dev.parent);
#ifdef WIRELESS_EXT
mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
#endif
mesh_dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
mesh_dev->set_multicast_list = lbs_set_multicast_list;
/* 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;
lbs_persist_config_init(mesh_dev);
/* 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;
}
static void lbs_remove_mesh(struct lbs_private *priv)
{
struct net_device *mesh_dev;
mesh_dev = priv->mesh_dev;
if (!mesh_dev)
return;
lbs_deb_enter(LBS_DEB_MESH);
netif_stop_queue(mesh_dev);
netif_carrier_off(mesh_dev);
sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
lbs_persist_config_remove(mesh_dev);
unregister_netdev(mesh_dev);
priv->mesh_dev = NULL;
free_netdev(mesh_dev);
lbs_deb_leave(LBS_DEB_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, 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, &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;
}
void lbs_queue_event(struct lbs_private *priv, u32 event)
{
unsigned long flags;
lbs_deb_enter(LBS_DEB_THREAD);
spin_lock_irqsave(&priv->driver_lock, flags);
if (priv->psstate == PS_STATE_SLEEP)
priv->psstate = PS_STATE_AWAKE;
__kfifo_put(priv->event_fifo, (unsigned char *) &event, sizeof(u32));
wake_up_interruptible(&priv->waitq);
spin_unlock_irqrestore(&priv->driver_lock, flags);
lbs_deb_leave(LBS_DEB_THREAD);
}
EXPORT_SYMBOL_GPL(lbs_queue_event);
void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx)
{
lbs_deb_enter(LBS_DEB_THREAD);
if (priv->psstate == PS_STATE_SLEEP)
priv->psstate = PS_STATE_AWAKE;
/* Swap buffers by flipping the response index */
BUG_ON(resp_idx > 1);
priv->resp_idx = resp_idx;
wake_up_interruptible(&priv->waitq);
lbs_deb_leave(LBS_DEB_THREAD);
}
EXPORT_SYMBOL_GPL(lbs_notify_command_response);
static int __init lbs_init_module(void)
{
lbs_deb_enter(LBS_DEB_MAIN);
memset(&confirm_sleep, 0, sizeof(confirm_sleep));
confirm_sleep.hdr.command = cpu_to_le16(CMD_802_11_PS_MODE);
confirm_sleep.hdr.size = cpu_to_le16(sizeof(confirm_sleep));
confirm_sleep.action = cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
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)
{
/* Yes, _stop_ the queue. Because we don't support injection */
lbs_deb_enter(LBS_DEB_MAIN);
netif_carrier_off(dev);
netif_stop_queue(dev);
lbs_deb_leave(LBS_DEB_LEAVE);
return 0;
}
static int lbs_rtap_stop(struct net_device *dev)
{
lbs_deb_enter(LBS_DEB_MAIN);
lbs_deb_leave(LBS_DEB_MAIN);
return 0;
}
static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
netif_stop_queue(dev);
return NETDEV_TX_BUSY;
}
static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
{
struct lbs_private *priv = dev->priv;
lbs_deb_enter(LBS_DEB_NET);
return &priv->stats;
}
static void lbs_remove_rtap(struct lbs_private *priv)
{
lbs_deb_enter(LBS_DEB_MAIN);
if (priv->rtap_net_dev == NULL)
goto out;
unregister_netdev(priv->rtap_net_dev);
free_netdev(priv->rtap_net_dev);
priv->rtap_net_dev = NULL;
out:
lbs_deb_leave(LBS_DEB_MAIN);
}
static int lbs_add_rtap(struct lbs_private *priv)
{
int ret = 0;
struct net_device *rtap_dev;
lbs_deb_enter(LBS_DEB_MAIN);
if (priv->rtap_net_dev) {
ret = -EPERM;
goto out;
}
rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
if (rtap_dev == NULL) {
ret = -ENOMEM;
goto out;
}
memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
rtap_dev->open = lbs_rtap_open;
rtap_dev->stop = lbs_rtap_stop;
rtap_dev->get_stats = lbs_rtap_get_stats;
rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
rtap_dev->priv = priv;
ret = register_netdev(rtap_dev);
if (ret) {
free_netdev(rtap_dev);
goto out;
}
priv->rtap_net_dev = rtap_dev;
out:
lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
return ret;
}
#ifndef CONFIG_IEEE80211
const char *escape_essid(const char *essid, u8 essid_len)
{
static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
const char *s = essid;
char *d = escaped;
if (ieee80211_is_empty_essid(essid, essid_len)) {
memcpy(escaped, "<hidden>", sizeof("<hidden>"));
return escaped;
}
essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
while (essid_len--) {
if (*s == '\0') {
*d++ = '\\';
*d++ = '0';
s++;
} else {
*d++ = *s++;
}
}
*d = '\0';
return escaped;
}
#endif
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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