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path: root/drivers/net/wireless/libertas/main.c
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Diffstat (limited to 'drivers/net/wireless/libertas/main.c')
-rw-r--r--drivers/net/wireless/libertas/main.c289
1 files changed, 169 insertions, 120 deletions
diff --git a/drivers/net/wireless/libertas/main.c b/drivers/net/wireless/libertas/main.c
index 4d4e2f3b66ac..406f54d40956 100644
--- a/drivers/net/wireless/libertas/main.c
+++ b/drivers/net/wireless/libertas/main.c
@@ -10,6 +10,7 @@
#include <linux/netdevice.h>
#include <linux/if_arp.h>
#include <linux/kthread.h>
+#include <linux/kfifo.h>
#include <net/iw_handler.h>
#include <net/ieee80211.h>
@@ -19,8 +20,8 @@
#include "dev.h"
#include "wext.h"
#include "debugfs.h"
+#include "scan.h"
#include "assoc.h"
-#include "join.h"
#include "cmd.h"
#define DRIVER_RELEASE_VERSION "323.p0"
@@ -37,6 +38,11 @@ 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 */
@@ -277,10 +283,10 @@ static ssize_t lbs_rtap_set(struct device *dev,
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)
+ if (monitor_mode) {
+ if (priv->monitormode == monitor_mode)
return strlen(buf);
- if (priv->monitormode == LBS_MONITOR_OFF) {
+ if (!priv->monitormode) {
if (priv->infra_open || priv->mesh_open)
return -EBUSY;
if (priv->mode == IW_MODE_INFRA)
@@ -293,9 +299,9 @@ static ssize_t lbs_rtap_set(struct device *dev,
}
else {
- if (priv->monitormode == LBS_MONITOR_OFF)
+ if (!priv->monitormode)
return strlen(buf);
- priv->monitormode = LBS_MONITOR_OFF;
+ priv->monitormode = 0;
lbs_remove_rtap(priv);
if (priv->currenttxskb) {
@@ -392,7 +398,7 @@ static int lbs_dev_open(struct net_device *dev)
spin_lock_irq(&priv->driver_lock);
- if (priv->monitormode != LBS_MONITOR_OFF) {
+ if (priv->monitormode) {
ret = -EBUSY;
goto out;
}
@@ -475,10 +481,9 @@ static void lbs_tx_timeout(struct net_device *dev)
dev->trans_start = jiffies;
- if (priv->currenttxskb) {
- priv->eventcause = 0x01000000;
- lbs_send_tx_feedback(priv);
- }
+ 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);
@@ -531,34 +536,27 @@ 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 ;
-
- 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);
+ dev = priv->dev;
- ret = lbs_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS,
- CMD_ACT_SET,
- CMD_OPTION_WAITFORRSP, 0, NULL);
+ 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");
- 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);
+ 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, priv->current_addr, ETH_ALEN);
+ memcpy(priv->mesh_dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
done:
lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
@@ -581,45 +579,45 @@ static int lbs_copy_multicast_address(struct lbs_private *priv,
static void lbs_set_multicast_list(struct net_device *dev)
{
struct lbs_private *priv = dev->priv;
- int oldpacketfilter;
+ int old_mac_control;
DECLARE_MAC_BUF(mac);
lbs_deb_enter(LBS_DEB_NET);
- oldpacketfilter = priv->currentpacketfilter;
+ old_mac_control = priv->mac_control;
if (dev->flags & IFF_PROMISC) {
lbs_deb_net("enable promiscuous mode\n");
- priv->currentpacketfilter |=
+ priv->mac_control |=
CMD_ACT_MAC_PROMISCUOUS_ENABLE;
- priv->currentpacketfilter &=
+ priv->mac_control &=
~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
CMD_ACT_MAC_MULTICAST_ENABLE);
} else {
/* Multicast */
- priv->currentpacketfilter &=
+ priv->mac_control &=
~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 |=
+ priv->mac_control |=
CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
- priv->currentpacketfilter &=
+ priv->mac_control &=
~CMD_ACT_MAC_MULTICAST_ENABLE;
} else {
- priv->currentpacketfilter &=
+ priv->mac_control &=
~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
if (!dev->mc_count) {
lbs_deb_net("no multicast addresses, "
"disabling multicast\n");
- priv->currentpacketfilter &=
+ priv->mac_control &=
~CMD_ACT_MAC_MULTICAST_ENABLE;
} else {
int i;
- priv->currentpacketfilter |=
+ priv->mac_control |=
CMD_ACT_MAC_MULTICAST_ENABLE;
priv->nr_of_multicastmacaddr =
@@ -642,9 +640,8 @@ static void lbs_set_multicast_list(struct net_device *dev)
}
}
- if (priv->currentpacketfilter != oldpacketfilter) {
- lbs_set_mac_packet_filter(priv);
- }
+ if (priv->mac_control != old_mac_control)
+ lbs_set_mac_control(priv);
lbs_deb_leave(LBS_DEB_NET);
}
@@ -662,7 +659,6 @@ 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);
@@ -670,9 +666,10 @@ static int lbs_thread(void *data)
for (;;) {
int shouldsleep;
+ u8 resp_idx;
- lbs_deb_thread( "main-thread 111: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
- priv->intcounter, priv->currenttxskb, priv->dnld_sent);
+ 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);
@@ -684,8 +681,6 @@ static int lbs_thread(void *data)
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->intcounter)
- shouldsleep = 0; /* Interrupt pending. Deal with it now */
else if (priv->cmd_timed_out)
shouldsleep = 0; /* Command timed out. Recover */
else if (!priv->fw_ready)
@@ -698,29 +693,34 @@ static int lbs_thread(void *data)
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("main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
- priv->connect_status, priv->intcounter,
- priv->psmode, priv->psstate);
+ lbs_deb_thread("sleeping, connect_status %d, "
+ "ps_mode %d, ps_state %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("main-thread 222 (waking up): intcounter=%d currenttxskb=%p dnld_sent=%d\n",
- priv->intcounter, priv->currenttxskb, priv->dnld_sent);
+ 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("main-thread 333: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
- priv->intcounter, priv->currenttxskb, priv->dnld_sent);
+ lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
+ priv->currenttxskb, priv->dnld_sent);
if (kthread_should_stop()) {
- lbs_deb_thread("main-thread: break from main thread\n");
+ lbs_deb_thread("break from main thread\n");
break;
}
@@ -729,35 +729,23 @@ static int lbs_thread(void *data)
continue;
}
- 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);
+ lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
+ 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_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_rx_command(priv);
+ 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;
@@ -778,21 +766,18 @@ static int lbs_thread(void *data)
}
priv->cmd_timed_out = 0;
- /* Any Card Event */
- if (priv->hisregcpy & MRVDRV_CARDEVENT) {
- lbs_deb_thread("main-thread: Card Event Activity\n");
-
- priv->hisregcpy &= ~MRVDRV_CARDEVENT;
+ /* Process hardware events, e.g. card removed, link lost */
+ spin_lock_irq(&priv->driver_lock);
+ while (__kfifo_len(priv->event_fifo)) {
+ u32 event;
- 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
+ __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;
@@ -801,10 +786,12 @@ static int lbs_thread(void *data)
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_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, (u16) priv->psmode);
+ lbs_ps_confirm_sleep(priv);
} else {
/* workaround for firmware sending
* deauth/linkloss event immediately
@@ -812,7 +799,8 @@ static int lbs_thread(void *data)
* after firmware fixes it
*/
priv->psstate = PS_STATE_AWAKE;
- lbs_pr_alert("main-thread: ignore PS_SleepConfirm in non-connected state\n");
+ lbs_pr_alert("ignore PS_SleepConfirm in "
+ "non-connected state\n");
}
}
@@ -945,7 +933,7 @@ static int lbs_setup_firmware(struct lbs_private *priv)
goto done;
}
- lbs_set_mac_packet_filter(priv);
+ lbs_set_mac_control(priv);
ret = lbs_get_data_rate(priv);
if (ret < 0) {
@@ -985,6 +973,18 @@ out:
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;
@@ -1009,14 +1009,6 @@ static int lbs_init_adapter(struct lbs_private *priv)
&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;
@@ -1024,7 +1016,7 @@ static int lbs_init_adapter(struct lbs_private *priv)
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->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;
@@ -1045,7 +1037,18 @@ static int lbs_init_adapter(struct lbs_private *priv)
/* Allocate the command buffers */
if (lbs_allocate_cmd_buffer(priv)) {
lbs_pr_err("Out of memory allocating command buffers\n");
- ret = -1;
+ 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:
@@ -1059,6 +1062,8 @@ 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;
@@ -1128,7 +1133,7 @@ struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
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);
+ INIT_WORK(&priv->sync_channel, lbs_sync_channel_worker);
sprintf(priv->mesh_ssid, "mesh");
priv->mesh_ssid_len = 4;
@@ -1380,7 +1385,7 @@ static void lbs_remove_mesh(struct lbs_private *priv)
* @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)
+struct chan_freq_power *lbs_get_region_cfp_table(u8 region, int *cfp_no)
{
int i, end;
@@ -1414,7 +1419,7 @@ int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
memset(priv->region_channel, 0, sizeof(priv->region_channel));
- cfp = lbs_get_region_cfp_table(region, band, &cfp_no);
+ 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;
@@ -1433,31 +1438,49 @@ out:
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 lbs_private *priv)
+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);
- lbs_deb_thread("lbs_interrupt: intcounter=%d\n", priv->intcounter);
- priv->intcounter++;
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_interrupt);
+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;
@@ -1554,6 +1577,32 @@ out:
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);