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Commit 2a421b91 authored by Tomas Winkler's avatar Tomas Winkler Committed by John W. Linville
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iwlwifi: move scan to iwl-scan.c iwlcore 

This patch moves scan code to iwl-scan.c file in iwlcore module.
Signed-off-by: default avatarTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: default avatarZhu Yi <yi.zhu@intel.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 4564ce8b
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Showing with 946 additions and 872 deletions
drivers/net/wireless/iwlwifi/Makefile
View file @ 2a421b91
obj-$(CONFIG_IWLCORE) += iwlcore.o obj-$(CONFIG_IWLCORE) += iwlcore.o
iwlcore-objs := iwl-core.o iwl-eeprom.o iwl-hcmd.o iwl-power.o iwl-calib.o iwlcore-objs := iwl-core.o iwl-eeprom.o iwl-hcmd.o iwl-power.o
iwlcore-objs += iwl-rx.o iwl-tx.o iwl-sta.o iwlcore-objs += iwl-rx.o iwl-tx.o iwl-sta.o iwl-calib.o
iwlcore-objs += iwl-scan.o
iwlcore-$(CONFIG_IWLWIFI_DEBUGFS) += iwl-debugfs.o iwlcore-$(CONFIG_IWLWIFI_DEBUGFS) += iwl-debugfs.o
iwlcore-$(CONFIG_IWLWIFI_LEDS) += iwl-led.o iwlcore-$(CONFIG_IWLWIFI_LEDS) += iwl-led.o
iwlcore-$(CONFIG_IWLWIFI_RFKILL) += iwl-rfkill.o iwlcore-$(CONFIG_IWLWIFI_RFKILL) += iwl-rfkill.o
......
drivers/net/wireless/iwlwifi/iwl-commands.h
View file @ 2a421b91
...@@ -2100,7 +2100,7 @@ struct iwl4965_ct_kill_config { ...@@ -2100,7 +2100,7 @@ struct iwl4965_ct_kill_config {
*****************************************************************************/ *****************************************************************************/
/** /**
* struct iwl4965_scan_channel - entry in REPLY_SCAN_CMD channel table * struct iwl_scan_channel - entry in REPLY_SCAN_CMD channel table
* *
* One for each channel in the scan list. * One for each channel in the scan list.
* Each channel can independently select: * Each channel can independently select:
...@@ -2110,7 +2110,7 @@ struct iwl4965_ct_kill_config { ...@@ -2110,7 +2110,7 @@ struct iwl4965_ct_kill_config {
* quiet_plcp_th, good_CRC_th) * quiet_plcp_th, good_CRC_th)
* *
* To avoid uCode errors, make sure the following are true (see comments * To avoid uCode errors, make sure the following are true (see comments
* under struct iwl4965_scan_cmd about max_out_time and quiet_time): * under struct iwl_scan_cmd about max_out_time and quiet_time):
* 1) If using passive_dwell (i.e. passive_dwell != 0): * 1) If using passive_dwell (i.e. passive_dwell != 0):
* active_dwell <= passive_dwell (< max_out_time if max_out_time != 0) * active_dwell <= passive_dwell (< max_out_time if max_out_time != 0)
* 2) quiet_time <= active_dwell * 2) quiet_time <= active_dwell
...@@ -2118,7 +2118,7 @@ struct iwl4965_ct_kill_config { ...@@ -2118,7 +2118,7 @@ struct iwl4965_ct_kill_config {
* passive_dwell < max_out_time * passive_dwell < max_out_time
* active_dwell < max_out_time * active_dwell < max_out_time
*/ */
struct iwl4965_scan_channel { struct iwl_scan_channel {
/* /*
* type is defined as: * type is defined as:
* 0:0 1 = active, 0 = passive * 0:0 1 = active, 0 = passive
...@@ -2134,13 +2134,13 @@ struct iwl4965_scan_channel { ...@@ -2134,13 +2134,13 @@ struct iwl4965_scan_channel {
} __attribute__ ((packed)); } __attribute__ ((packed));
/** /**
* struct iwl4965_ssid_ie - directed scan network information element * struct iwl_ssid_ie - directed scan network information element
* *
* Up to 4 of these may appear in REPLY_SCAN_CMD, selected by "type" field * Up to 4 of these may appear in REPLY_SCAN_CMD, selected by "type" field
* in struct iwl4965_scan_channel; each channel may select different ssids from * in struct iwl4965_scan_channel; each channel may select different ssids from
* among the 4 entries. SSID IEs get transmitted in reverse order of entry. * among the 4 entries. SSID IEs get transmitted in reverse order of entry.
*/ */
struct iwl4965_ssid_ie { struct iwl_ssid_ie {
u8 id; u8 id;
u8 len; u8 len;
u8 ssid[32]; u8 ssid[32];
...@@ -2201,9 +2201,9 @@ struct iwl4965_ssid_ie { ...@@ -2201,9 +2201,9 @@ struct iwl4965_ssid_ie {
* Driver must use separate scan commands for 2.4 vs. 5 GHz bands. * Driver must use separate scan commands for 2.4 vs. 5 GHz bands.
* *
* To avoid uCode errors, see timing restrictions described under * To avoid uCode errors, see timing restrictions described under
* struct iwl4965_scan_channel. * struct iwl_scan_channel.
*/ */
struct iwl4965_scan_cmd { struct iwl_scan_cmd {
__le16 len; __le16 len;
u8 reserved0; u8 reserved0;
u8 channel_count; /* # channels in channel list */ u8 channel_count; /* # channels in channel list */
...@@ -2227,7 +2227,7 @@ struct iwl4965_scan_cmd { ...@@ -2227,7 +2227,7 @@ struct iwl4965_scan_cmd {
struct iwl_tx_cmd tx_cmd; struct iwl_tx_cmd tx_cmd;
/* For directed active scans (set to all-0s otherwise) */ /* For directed active scans (set to all-0s otherwise) */
struct iwl4965_ssid_ie direct_scan[PROBE_OPTION_MAX]; struct iwl_ssid_ie direct_scan[PROBE_OPTION_MAX];
/* /*
* Probe request frame, followed by channel list. * Probe request frame, followed by channel list.
...@@ -2255,14 +2255,14 @@ struct iwl4965_scan_cmd { ...@@ -2255,14 +2255,14 @@ struct iwl4965_scan_cmd {
/* /*
* REPLY_SCAN_CMD = 0x80 (response) * REPLY_SCAN_CMD = 0x80 (response)
*/ */
struct iwl4965_scanreq_notification { struct iwl_scanreq_notification {
__le32 status; /* 1: okay, 2: cannot fulfill request */ __le32 status; /* 1: okay, 2: cannot fulfill request */
} __attribute__ ((packed)); } __attribute__ ((packed));
/* /*
* SCAN_START_NOTIFICATION = 0x82 (notification only, not a command) * SCAN_START_NOTIFICATION = 0x82 (notification only, not a command)
*/ */
struct iwl4965_scanstart_notification { struct iwl_scanstart_notification {
__le32 tsf_low; __le32 tsf_low;
__le32 tsf_high; __le32 tsf_high;
__le32 beacon_timer; __le32 beacon_timer;
...@@ -2279,7 +2279,7 @@ struct iwl4965_scanstart_notification { ...@@ -2279,7 +2279,7 @@ struct iwl4965_scanstart_notification {
/* /*
* SCAN_RESULTS_NOTIFICATION = 0x83 (notification only, not a command) * SCAN_RESULTS_NOTIFICATION = 0x83 (notification only, not a command)
*/ */
struct iwl4965_scanresults_notification { struct iwl_scanresults_notification {
u8 channel; u8 channel;
u8 band; u8 band;
u8 reserved[2]; u8 reserved[2];
...@@ -2291,7 +2291,7 @@ struct iwl4965_scanresults_notification { ...@@ -2291,7 +2291,7 @@ struct iwl4965_scanresults_notification {
/* /*
* SCAN_COMPLETE_NOTIFICATION = 0x84 (notification only, not a command) * SCAN_COMPLETE_NOTIFICATION = 0x84 (notification only, not a command)
*/ */
struct iwl4965_scancomplete_notification { struct iwl_scancomplete_notification {
u8 scanned_channels; u8 scanned_channels;
u8 status; u8 status;
u8 reserved; u8 reserved;
......
drivers/net/wireless/iwlwifi/iwl-core.h
View file @ 2a421b91
...@@ -243,6 +243,16 @@ int iwl_txq_check_empty(struct iwl_priv *priv, int sta_id, u8 tid, int txq_id); ...@@ -243,6 +243,16 @@ int iwl_txq_check_empty(struct iwl_priv *priv, int sta_id, u8 tid, int txq_id);
****************************************************/ ****************************************************/
int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force); int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force);
/*******************************************************************************
* Scanning
******************************************************************************/
int iwl_scan_cancel(struct iwl_priv *priv);
int iwl_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms);
const char *iwl_escape_essid(const char *essid, u8 essid_len);
int iwl_scan_initiate(struct iwl_priv *priv);
void iwl_setup_rx_scan_handlers(struct iwl_priv *priv);
void iwl_setup_scan_deferred_work(struct iwl_priv *priv);
/***************************************************** /*****************************************************
* S e n d i n g H o s t C o m m a n d s * * S e n d i n g H o s t C o m m a n d s *
*****************************************************/ *****************************************************/
......
drivers/net/wireless/iwlwifi/iwl-dev.h
View file @ 2a421b91
...@@ -976,7 +976,7 @@ struct iwl_priv { ...@@ -976,7 +976,7 @@ struct iwl_priv {
int one_direct_scan; int one_direct_scan;
u8 direct_ssid_len; u8 direct_ssid_len;
u8 direct_ssid[IW_ESSID_MAX_SIZE]; u8 direct_ssid[IW_ESSID_MAX_SIZE];
struct iwl4965_scan_cmd *scan; struct iwl_scan_cmd *scan;
/* spinlock */ /* spinlock */
spinlock_t lock; /* protect general shared data */ spinlock_t lock; /* protect general shared data */
......
drivers/net/wireless/iwlwifi/iwl-scan.c 0 → 100644
View file @ 2a421b91
/******************************************************************************
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
* USA
*
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* Contact Information:
* Tomas Winkler <tomas.winkler@intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*****************************************************************************/
#include <net/mac80211.h>
#include <linux/etherdevice.h>
#include "iwl-eeprom.h"
#include "iwl-dev.h"
#include "iwl-core.h"
#include "iwl-sta.h"
#include "iwl-io.h"
#include "iwl-helpers.h"
/* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
* sending probe req. This should be set long enough to hear probe responses
* from more than one AP. */
#define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
#define IWL_ACTIVE_DWELL_TIME_52 (10)
/* For faster active scanning, scan will move to the next channel if fewer than
* PLCP_QUIET_THRESH packets are heard on this channel within
* ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
* time if it's a quiet channel (nothing responded to our probe, and there's
* no other traffic).
* Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
#define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
#define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
/* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
* Must be set longer than active dwell time.
* For the most reliable scan, set > AP beacon interval (typically 100msec). */
#define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
#define IWL_PASSIVE_DWELL_TIME_52 (10)
#define IWL_PASSIVE_DWELL_BASE (100)
#define IWL_CHANNEL_TUNE_TIME 5
static int iwl_is_empty_essid(const char *essid, int essid_len)
{
/* Single white space is for Linksys APs */
if (essid_len == 1 && essid[0] == ' ')
return 1;
/* Otherwise, if the entire essid is 0, we assume it is hidden */
while (essid_len) {
essid_len--;
if (essid[essid_len] != '\0')
return 0;
}
return 1;
}
const char *iwl_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 (iwl_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;
}
EXPORT_SYMBOL(iwl_escape_essid);
/**
* iwl_scan_cancel - Cancel any currently executing HW scan
*
* NOTE: priv->mutex is not required before calling this function
*/
int iwl_scan_cancel(struct iwl_priv *priv)
{
if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
clear_bit(STATUS_SCANNING, &priv->status);
return 0;
}
if (test_bit(STATUS_SCANNING, &priv->status)) {
if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
IWL_DEBUG_SCAN("Queuing scan abort.\n");
set_bit(STATUS_SCAN_ABORTING, &priv->status);
queue_work(priv->workqueue, &priv->abort_scan);
} else
IWL_DEBUG_SCAN("Scan abort already in progress.\n");
return test_bit(STATUS_SCANNING, &priv->status);
}
return 0;
}
EXPORT_SYMBOL(iwl_scan_cancel);
/**
* iwl_scan_cancel_timeout - Cancel any currently executing HW scan
* @ms: amount of time to wait (in milliseconds) for scan to abort
*
* NOTE: priv->mutex must be held before calling this function
*/
int iwl_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
{
unsigned long now = jiffies;
int ret;
ret = iwl_scan_cancel(priv);
if (ret && ms) {
mutex_unlock(&priv->mutex);
while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
test_bit(STATUS_SCANNING, &priv->status))
msleep(1);
mutex_lock(&priv->mutex);
return test_bit(STATUS_SCANNING, &priv->status);
}
return ret;
}
EXPORT_SYMBOL(iwl_scan_cancel_timeout);
static int iwl_send_scan_abort(struct iwl_priv *priv)
{
int ret = 0;
struct iwl_rx_packet *res;
struct iwl_host_cmd cmd = {
.id = REPLY_SCAN_ABORT_CMD,
.meta.flags = CMD_WANT_SKB,
};
/* If there isn't a scan actively going on in the hardware
* then we are in between scan bands and not actually
* actively scanning, so don't send the abort command */
if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
clear_bit(STATUS_SCAN_ABORTING, &priv->status);
return 0;
}
ret = iwl_send_cmd_sync(priv, &cmd);
if (ret) {
clear_bit(STATUS_SCAN_ABORTING, &priv->status);
return ret;
}
res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
if (res->u.status != CAN_ABORT_STATUS) {
/* The scan abort will return 1 for success or
* 2 for "failure". A failure condition can be
* due to simply not being in an active scan which
* can occur if we send the scan abort before we
* the microcode has notified us that a scan is
* completed. */
IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
clear_bit(STATUS_SCAN_ABORTING, &priv->status);
clear_bit(STATUS_SCAN_HW, &priv->status);
}
dev_kfree_skb_any(cmd.meta.u.skb);
return ret;
}
/* Service response to REPLY_SCAN_CMD (0x80) */
static void iwl_rx_reply_scan(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb)
{
#ifdef CONFIG_IWLWIFI_DEBUG
struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
struct iwl_scanreq_notification *notif =
(struct iwl_scanreq_notification *)pkt->u.raw;
IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
#endif
}
/* Service SCAN_START_NOTIFICATION (0x82) */
static void iwl_rx_scan_start_notif(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb)
{
struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
struct iwl_scanstart_notification *notif =
(struct iwl_scanstart_notification *)pkt->u.raw;
priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
IWL_DEBUG_SCAN("Scan start: "
"%d [802.11%s] "
"(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
notif->channel,
notif->band ? "bg" : "a",
notif->tsf_high,
notif->tsf_low, notif->status, notif->beacon_timer);
}
/* Service SCAN_RESULTS_NOTIFICATION (0x83) */
static void iwl_rx_scan_results_notif(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb)
{
#ifdef CONFIG_IWLWIFI_DEBUG
struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
struct iwl_scanresults_notification *notif =
(struct iwl_scanresults_notification *)pkt->u.raw;
IWL_DEBUG_SCAN("Scan ch.res: "
"%d [802.11%s] "
"(TSF: 0x%08X:%08X) - %d "
"elapsed=%lu usec (%dms since last)\n",
notif->channel,
notif->band ? "bg" : "a",
le32_to_cpu(notif->tsf_high),
le32_to_cpu(notif->tsf_low),
le32_to_cpu(notif->statistics[0]),
le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
jiffies_to_msecs(elapsed_jiffies
(priv->last_scan_jiffies, jiffies)));
#endif
priv->last_scan_jiffies = jiffies;
priv->next_scan_jiffies = 0;
}
/* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
static void iwl_rx_scan_complete_notif(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb)
{
struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
scan_notif->scanned_channels,
scan_notif->tsf_low,
scan_notif->tsf_high, scan_notif->status);
/* The HW is no longer scanning */
clear_bit(STATUS_SCAN_HW, &priv->status);
/* The scan completion notification came in, so kill that timer... */
cancel_delayed_work(&priv->scan_check);
IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
(priv->scan_bands == 2) ? "2.4" : "5.2",
jiffies_to_msecs(elapsed_jiffies
(priv->scan_pass_start, jiffies)));
/* Remove this scanned band from the list
* of pending bands to scan */
priv->scan_bands--;
/* If a request to abort was given, or the scan did not succeed
* then we reset the scan state machine and terminate,
* re-queuing another scan if one has been requested */
if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
IWL_DEBUG_INFO("Aborted scan completed.\n");
clear_bit(STATUS_SCAN_ABORTING, &priv->status);
} else {
/* If there are more bands on this scan pass reschedule */
if (priv->scan_bands > 0)
goto reschedule;
}
priv->last_scan_jiffies = jiffies;
priv->next_scan_jiffies = 0;
IWL_DEBUG_INFO("Setting scan to off\n");
clear_bit(STATUS_SCANNING, &priv->status);
IWL_DEBUG_INFO("Scan took %dms\n",
jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
queue_work(priv->workqueue, &priv->scan_completed);
return;
reschedule:
priv->scan_pass_start = jiffies;
queue_work(priv->workqueue, &priv->request_scan);
}
void iwl_setup_rx_scan_handlers(struct iwl_priv *priv)
{
/* scan handlers */
priv->rx_handlers[REPLY_SCAN_CMD] = iwl_rx_reply_scan;
priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl_rx_scan_start_notif;
priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
iwl_rx_scan_results_notif;
priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
iwl_rx_scan_complete_notif;
}
EXPORT_SYMBOL(iwl_setup_rx_scan_handlers);
static inline u16 iwl_get_active_dwell_time(struct iwl_priv *priv,
enum ieee80211_band band)
{
if (band == IEEE80211_BAND_5GHZ)
return IWL_ACTIVE_DWELL_TIME_52;
else
return IWL_ACTIVE_DWELL_TIME_24;
}
static u16 iwl_get_passive_dwell_time(struct iwl_priv *priv,
enum ieee80211_band band)
{
u16 active = iwl_get_active_dwell_time(priv, band);
u16 passive = (band != IEEE80211_BAND_5GHZ) ?
IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
if (iwl_is_associated(priv)) {
/* If we're associated, we clamp the maximum passive
* dwell time to be 98% of the beacon interval (minus
* 2 * channel tune time) */
passive = priv->beacon_int;
if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
passive = IWL_PASSIVE_DWELL_BASE;
passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
}
if (passive <= active)
passive = active + 1;
return passive;
}
static int iwl_get_channels_for_scan(struct iwl_priv *priv,
enum ieee80211_band band,
u8 is_active, u8 direct_mask,
struct iwl_scan_channel *scan_ch)
{
const struct ieee80211_channel *channels = NULL;
const struct ieee80211_supported_band *sband;
const struct iwl_channel_info *ch_info;
u16 passive_dwell = 0;
u16 active_dwell = 0;
int added, i;
sband = iwl_get_hw_mode(priv, band);
if (!sband)
return 0;
channels = sband->channels;
active_dwell = iwl_get_active_dwell_time(priv, band);
passive_dwell = iwl_get_passive_dwell_time(priv, band);
for (i = 0, added = 0; i < sband->n_channels; i++) {
if (channels[i].flags & IEEE80211_CHAN_DISABLED)
continue;
scan_ch->channel =
ieee80211_frequency_to_channel(channels[i].center_freq);
ch_info = iwl_get_channel_info(priv, band,
scan_ch->channel);
if (!is_channel_valid(ch_info)) {
IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
scan_ch->channel);
continue;
}
if (!is_active || is_channel_passive(ch_info) ||
(channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
scan_ch->type = 0; /* passive */
else
scan_ch->type = 1; /* active */
if (scan_ch->type & 1)
scan_ch->type |= (direct_mask << 1);
scan_ch->active_dwell = cpu_to_le16(active_dwell);
scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
/* Set txpower levels to defaults */
scan_ch->tpc.dsp_atten = 110;
/* scan_pwr_info->tpc.dsp_atten; */
/*scan_pwr_info->tpc.tx_gain; */
if (band == IEEE80211_BAND_5GHZ)
scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
else {
scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
/* NOTE: if we were doing 6Mb OFDM for scans we'd use
* power level:
* scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
*/
}
IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
scan_ch->channel,
(scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
(scan_ch->type & 1) ?
active_dwell : passive_dwell);
scan_ch++;
added++;
}
IWL_DEBUG_SCAN("total channels to scan %d \n", added);
return added;
}
int iwl_scan_initiate(struct iwl_priv *priv)
{
if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
IWL_ERROR("APs don't scan.\n");
return 0;
}
if (!iwl_is_ready_rf(priv)) {
IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
return -EIO;
}
if (test_bit(STATUS_SCANNING, &priv->status)) {
IWL_DEBUG_SCAN("Scan already in progress.\n");
return -EAGAIN;
}
if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
IWL_DEBUG_SCAN("Scan request while abort pending. "
"Queuing.\n");
return -EAGAIN;
}
IWL_DEBUG_INFO("Starting scan...\n");
priv->scan_bands = 2;
set_bit(STATUS_SCANNING, &priv->status);
priv->scan_start = jiffies;
priv->scan_pass_start = priv->scan_start;
queue_work(priv->workqueue, &priv->request_scan);
return 0;
}
EXPORT_SYMBOL(iwl_scan_initiate);
#define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
static void iwl_bg_scan_check(struct work_struct *data)
{
struct iwl_priv *priv =
container_of(data, struct iwl_priv, scan_check.work);
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
return;
mutex_lock(&priv->mutex);
if (test_bit(STATUS_SCANNING, &priv->status) ||
test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
IWL_DEBUG(IWL_DL_SCAN, "Scan completion watchdog resetting "
"adapter (%dms)\n",
jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
iwl_send_scan_abort(priv);
}
mutex_unlock(&priv->mutex);
}
/**
* iwl_supported_rate_to_ie - fill in the supported rate in IE field
*
* return : set the bit for each supported rate insert in ie
*/
static u16 iwl_supported_rate_to_ie(u8 *ie, u16 supported_rate,
u16 basic_rate, int *left)
{
u16 ret_rates = 0, bit;
int i;
u8 *cnt = ie;
u8 *rates = ie + 1;
for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
if (bit & supported_rate) {
ret_rates |= bit;
rates[*cnt] = iwl_rates[i].ieee |
((bit & basic_rate) ? 0x80 : 0x00);
(*cnt)++;
(*left)--;
if ((*left <= 0) ||
(*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
break;
}
}
return ret_rates;
}
static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
u8 *pos, int *left)
{
struct ieee80211_ht_cap *ht_cap;
if (!sband || !sband->ht_info.ht_supported)
return;
if (*left < sizeof(struct ieee80211_ht_cap))
return;
*pos++ = sizeof(struct ieee80211_ht_cap);
ht_cap = (struct ieee80211_ht_cap *) pos;
ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
ht_cap->ampdu_params_info =
(sband->ht_info.ampdu_factor & IEEE80211_HT_CAP_AMPDU_FACTOR) |
((sband->ht_info.ampdu_density << 2) &
IEEE80211_HT_CAP_AMPDU_DENSITY);
*left -= sizeof(struct ieee80211_ht_cap);
}
/**
* iwl_fill_probe_req - fill in all required fields and IE for probe request
*/
static u16 iwl_fill_probe_req(struct iwl_priv *priv,
enum ieee80211_band band,
struct ieee80211_mgmt *frame,
int left, int is_direct)
{
int len = 0;
u8 *pos = NULL;
u16 active_rates, ret_rates, cck_rates, active_rate_basic;
const struct ieee80211_supported_band *sband =
iwl_get_hw_mode(priv, band);
/* Make sure there is enough space for the probe request,
* two mandatory IEs and the data */
left -= 24;
if (left < 0)
return 0;
len += 24;
frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
memcpy(frame->da, iwl_bcast_addr, ETH_ALEN);
memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN);
frame->seq_ctrl = 0;
/* fill in our indirect SSID IE */
/* ...next IE... */
left -= 2;
if (left < 0)
return 0;
len += 2;
pos = &(frame->u.probe_req.variable[0]);
*pos++ = WLAN_EID_SSID;
*pos++ = 0;
/* fill in our direct SSID IE... */
if (is_direct) {
/* ...next IE... */
left -= 2 + priv->essid_len;
if (left < 0)
return 0;
/* ... fill it in... */
*pos++ = WLAN_EID_SSID;
*pos++ = priv->essid_len;
memcpy(pos, priv->essid, priv->essid_len);
pos += priv->essid_len;
len += 2 + priv->essid_len;
}
/* fill in supported rate */
/* ...next IE... */
left -= 2;
if (left < 0)
return 0;
/* ... fill it in... */
*pos++ = WLAN_EID_SUPP_RATES;
*pos = 0;
/* exclude 60M rate */
active_rates = priv->rates_mask;
active_rates &= ~IWL_RATE_60M_MASK;
active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
cck_rates = IWL_CCK_RATES_MASK & active_rates;
ret_rates = iwl_supported_rate_to_ie(pos, cck_rates,
active_rate_basic, &left);
active_rates &= ~ret_rates;
ret_rates = iwl_supported_rate_to_ie(pos, active_rates,
active_rate_basic, &left);
active_rates &= ~ret_rates;
len += 2 + *pos;
pos += (*pos) + 1;
if (active_rates == 0)
goto fill_end;
/* fill in supported extended rate */
/* ...next IE... */
left -= 2;
if (left < 0)
return 0;
/* ... fill it in... */
*pos++ = WLAN_EID_EXT_SUPP_RATES;
*pos = 0;
iwl_supported_rate_to_ie(pos, active_rates,
active_rate_basic, &left);
if (*pos > 0)
len += 2 + *pos;
fill_end:
/* fill in HT IE */
left -= 2;
if (left < 0)
return 0;
*pos++ = WLAN_EID_HT_CAPABILITY;
*pos = 0;
iwl_ht_cap_to_ie(sband, pos, &left);
if (*pos > 0)
len += 2 + *pos;
return (u16)len;
}
static void iwl_bg_request_scan(struct work_struct *data)
{
struct iwl_priv *priv =
container_of(data, struct iwl_priv, request_scan);
struct iwl_host_cmd cmd = {
.id = REPLY_SCAN_CMD,
.len = sizeof(struct iwl_scan_cmd),
.meta.flags = CMD_SIZE_HUGE,
};
struct iwl_scan_cmd *scan;
struct ieee80211_conf *conf = NULL;
u16 cmd_len;
enum ieee80211_band band;
u8 direct_mask;
int ret = 0;
conf = ieee80211_get_hw_conf(priv->hw);
mutex_lock(&priv->mutex);
if (!iwl_is_ready(priv)) {
IWL_WARNING("request scan called when driver not ready.\n");
goto done;
}
/* Make sure the scan wasn't cancelled before this queued work
* was given the chance to run... */
if (!test_bit(STATUS_SCANNING, &priv->status))
goto done;
/* This should never be called or scheduled if there is currently
* a scan active in the hardware. */
if (test_bit(STATUS_SCAN_HW, &priv->status)) {
IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
"Ignoring second request.\n");
ret = -EIO;
goto done;
}
if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
goto done;
}
if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
goto done;
}
if (iwl_is_rfkill(priv)) {
IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
goto done;
}
if (!test_bit(STATUS_READY, &priv->status)) {
IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
goto done;
}
if (!priv->scan_bands) {
IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
goto done;
}
if (!priv->scan) {
priv->scan = kmalloc(sizeof(struct iwl_scan_cmd) +
IWL_MAX_SCAN_SIZE, GFP_KERNEL);
if (!priv->scan) {
ret = -ENOMEM;
goto done;
}
}
scan = priv->scan;
memset(scan, 0, sizeof(struct iwl_scan_cmd) + IWL_MAX_SCAN_SIZE);
scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
if (iwl_is_associated(priv)) {
u16 interval = 0;
u32 extra;
u32 suspend_time = 100;
u32 scan_suspend_time = 100;
unsigned long flags;
IWL_DEBUG_INFO("Scanning while associated...\n");
spin_lock_irqsave(&priv->lock, flags);
interval = priv->beacon_int;
spin_unlock_irqrestore(&priv->lock, flags);
scan->suspend_time = 0;
scan->max_out_time = cpu_to_le32(200 * 1024);
if (!interval)
interval = suspend_time;
extra = (suspend_time / interval) << 22;
scan_suspend_time = (extra |
((suspend_time % interval) * 1024));
scan->suspend_time = cpu_to_le32(scan_suspend_time);
IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
scan_suspend_time, interval);
}
/* We should add the ability for user to lock to PASSIVE ONLY */
if (priv->one_direct_scan) {
IWL_DEBUG_SCAN
("Kicking off one direct scan for '%s'\n",
iwl_escape_essid(priv->direct_ssid,
priv->direct_ssid_len));
scan->direct_scan[0].id = WLAN_EID_SSID;
scan->direct_scan[0].len = priv->direct_ssid_len;
memcpy(scan->direct_scan[0].ssid,
priv->direct_ssid, priv->direct_ssid_len);
direct_mask = 1;
} else if (!iwl_is_associated(priv) && priv->essid_len) {
IWL_DEBUG_SCAN
("Kicking off one direct scan for '%s' when not associated\n",
iwl_escape_essid(priv->essid, priv->essid_len));
scan->direct_scan[0].id = WLAN_EID_SSID;
scan->direct_scan[0].len = priv->essid_len;
memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
direct_mask = 1;
} else {
IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
direct_mask = 0;
}
scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
switch (priv->scan_bands) {
case 2:
scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
scan->tx_cmd.rate_n_flags =
iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
scan->good_CRC_th = 0;
band = IEEE80211_BAND_2GHZ;
break;
case 1:
scan->tx_cmd.rate_n_flags =
iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
RATE_MCS_ANT_B_MSK);
scan->good_CRC_th = IWL_GOOD_CRC_TH;
band = IEEE80211_BAND_5GHZ;
break;
default:
IWL_WARNING("Invalid scan band count\n");
goto done;
}
/* We don't build a direct scan probe request; the uCode will do
* that based on the direct_mask added to each channel entry */
cmd_len = iwl_fill_probe_req(priv, band,
(struct ieee80211_mgmt *)scan->data,
IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
scan->tx_cmd.len = cpu_to_le16(cmd_len);
/* select Rx chains */
/* Force use of chains B and C (0x6) for scan Rx.
* Avoid A (0x1) because of its off-channel reception on A-band.
* MIMO is not used here, but value is required to make uCode happy. */
scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
(0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
(0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
scan->filter_flags = RXON_FILTER_PROMISC_MSK;
if (direct_mask)
scan->channel_count =
iwl_get_channels_for_scan(
priv, band, 1, /* active */
direct_mask,
(void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
else
scan->channel_count =
iwl_get_channels_for_scan(
priv, band, 0, /* passive */
direct_mask,
(void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
RXON_FILTER_BCON_AWARE_MSK);
cmd.len += le16_to_cpu(scan->tx_cmd.len) +
scan->channel_count * sizeof(struct iwl_scan_channel);
cmd.data = scan;
scan->len = cpu_to_le16(cmd.len);
set_bit(STATUS_SCAN_HW, &priv->status);
ret = iwl_send_cmd_sync(priv, &cmd);
if (ret)
goto done;
queue_delayed_work(priv->workqueue, &priv->scan_check,
IWL_SCAN_CHECK_WATCHDOG);
mutex_unlock(&priv->mutex);
return;
done:
/* inform mac80211 scan aborted */
queue_work(priv->workqueue, &priv->scan_completed);
mutex_unlock(&priv->mutex);
}
static void iwl_bg_abort_scan(struct work_struct *work)
{
struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
if (!iwl_is_ready(priv))
return;
mutex_lock(&priv->mutex);
set_bit(STATUS_SCAN_ABORTING, &priv->status);
iwl_send_scan_abort(priv);
mutex_unlock(&priv->mutex);
}
void iwl_setup_scan_deferred_work(struct iwl_priv *priv)
{
/* FIXME: move here when resolved PENDING
* INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed); */
INIT_WORK(&priv->request_scan, iwl_bg_request_scan);
INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
}
EXPORT_SYMBOL(iwl_setup_scan_deferred_work);
drivers/net/wireless/iwlwifi/iwl4965-base.c
View file @ 2a421b91
...@@ -87,46 +87,6 @@ MODULE_VERSION(DRV_VERSION); ...@@ -87,46 +87,6 @@ MODULE_VERSION(DRV_VERSION);
MODULE_AUTHOR(DRV_COPYRIGHT); MODULE_AUTHOR(DRV_COPYRIGHT);
MODULE_LICENSE("GPL"); MODULE_LICENSE("GPL");
static int iwl4965_is_empty_essid(const char *essid, int essid_len)
{
/* Single white space is for Linksys APs */
if (essid_len == 1 && essid[0] == ' ')
return 1;
/* Otherwise, if the entire essid is 0, we assume it is hidden */
while (essid_len) {
essid_len--;
if (essid[essid_len] != '\0')
return 0;
}
return 1;
}
static const char *iwl4965_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 (iwl4965_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;
}
/*************** STATION TABLE MANAGEMENT **** /*************** STATION TABLE MANAGEMENT ****
* mac80211 should be examined to determine if sta_info is duplicating * mac80211 should be examined to determine if sta_info is duplicating
* the functionality provided here * the functionality provided here
...@@ -419,47 +379,6 @@ static int iwl4965_send_bt_config(struct iwl_priv *priv) ...@@ -419,47 +379,6 @@ static int iwl4965_send_bt_config(struct iwl_priv *priv)
sizeof(struct iwl4965_bt_cmd), &bt_cmd); sizeof(struct iwl4965_bt_cmd), &bt_cmd);
} }
static int iwl4965_send_scan_abort(struct iwl_priv *priv)
{
int ret = 0;
struct iwl_rx_packet *res;
struct iwl_host_cmd cmd = {
.id = REPLY_SCAN_ABORT_CMD,
.meta.flags = CMD_WANT_SKB,
};
/* If there isn't a scan actively going on in the hardware
* then we are in between scan bands and not actually
* actively scanning, so don't send the abort command */
if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
clear_bit(STATUS_SCAN_ABORTING, &priv->status);
return 0;
}
ret = iwl_send_cmd_sync(priv, &cmd);
if (ret) {
clear_bit(STATUS_SCAN_ABORTING, &priv->status);
return ret;
}
res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
if (res->u.status != CAN_ABORT_STATUS) {
/* The scan abort will return 1 for success or
* 2 for "failure". A failure condition can be
* due to simply not being in an active scan which
* can occur if we send the scan abort before we
* the microcode has notified us that a scan is
* completed. */
IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
clear_bit(STATUS_SCAN_ABORTING, &priv->status);
clear_bit(STATUS_SCAN_HW, &priv->status);
}
dev_kfree_skb_any(cmd.meta.u.skb);
return ret;
}
/* /*
* CARD_STATE_CMD * CARD_STATE_CMD
* *
...@@ -605,35 +524,6 @@ static int iwl4965_send_beacon_cmd(struct iwl_priv *priv) ...@@ -605,35 +524,6 @@ static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
* *
******************************************************************************/ ******************************************************************************/
/**
* iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
*
* return : set the bit for each supported rate insert in ie
*/
static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
u16 basic_rate, int *left)
{
u16 ret_rates = 0, bit;
int i;
u8 *cnt = ie;
u8 *rates = ie + 1;
for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
if (bit & supported_rate) {
ret_rates |= bit;
rates[*cnt] = iwl_rates[i].ieee |
((bit & basic_rate) ? 0x80 : 0x00);
(*cnt)++;
(*left)--;
if ((*left <= 0) ||
(*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
break;
}
}
return ret_rates;
}
static void iwl4965_ht_conf(struct iwl_priv *priv, static void iwl4965_ht_conf(struct iwl_priv *priv,
struct ieee80211_bss_conf *bss_conf) struct ieee80211_bss_conf *bss_conf)
{ {
...@@ -686,140 +576,6 @@ static void iwl4965_ht_conf(struct iwl_priv *priv, ...@@ -686,140 +576,6 @@ static void iwl4965_ht_conf(struct iwl_priv *priv,
IWL_DEBUG_MAC80211("leave\n"); IWL_DEBUG_MAC80211("leave\n");
} }
static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
u8 *pos, int *left)
{
struct ieee80211_ht_cap *ht_cap;
if (!sband || !sband->ht_info.ht_supported)
return;
if (*left < sizeof(struct ieee80211_ht_cap))
return;
*pos++ = sizeof(struct ieee80211_ht_cap);
ht_cap = (struct ieee80211_ht_cap *) pos;
ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
ht_cap->ampdu_params_info =
(sband->ht_info.ampdu_factor & IEEE80211_HT_CAP_AMPDU_FACTOR) |
((sband->ht_info.ampdu_density << 2) &
IEEE80211_HT_CAP_AMPDU_DENSITY);
*left -= sizeof(struct ieee80211_ht_cap);
}
/**
* iwl4965_fill_probe_req - fill in all required fields and IE for probe request
*/
static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
enum ieee80211_band band,
struct ieee80211_mgmt *frame,
int left, int is_direct)
{
int len = 0;
u8 *pos = NULL;
u16 active_rates, ret_rates, cck_rates, active_rate_basic;
const struct ieee80211_supported_band *sband =
iwl_get_hw_mode(priv, band);
/* Make sure there is enough space for the probe request,
* two mandatory IEs and the data */
left -= 24;
if (left < 0)
return 0;
len += 24;
frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
memcpy(frame->da, iwl_bcast_addr, ETH_ALEN);
memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN);
frame->seq_ctrl = 0;
/* fill in our indirect SSID IE */
/* ...next IE... */
left -= 2;
if (left < 0)
return 0;
len += 2;
pos = &(frame->u.probe_req.variable[0]);
*pos++ = WLAN_EID_SSID;
*pos++ = 0;
/* fill in our direct SSID IE... */
if (is_direct) {
/* ...next IE... */
left -= 2 + priv->essid_len;
if (left < 0)
return 0;
/* ... fill it in... */
*pos++ = WLAN_EID_SSID;
*pos++ = priv->essid_len;
memcpy(pos, priv->essid, priv->essid_len);
pos += priv->essid_len;
len += 2 + priv->essid_len;
}
/* fill in supported rate */
/* ...next IE... */
left -= 2;
if (left < 0)
return 0;
/* ... fill it in... */
*pos++ = WLAN_EID_SUPP_RATES;
*pos = 0;
/* exclude 60M rate */
active_rates = priv->rates_mask;
active_rates &= ~IWL_RATE_60M_MASK;
active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
cck_rates = IWL_CCK_RATES_MASK & active_rates;
ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
active_rate_basic, &left);
active_rates &= ~ret_rates;
ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
active_rate_basic, &left);
active_rates &= ~ret_rates;
len += 2 + *pos;
pos += (*pos) + 1;
if (active_rates == 0)
goto fill_end;
/* fill in supported extended rate */
/* ...next IE... */
left -= 2;
if (left < 0)
return 0;
/* ... fill it in... */
*pos++ = WLAN_EID_EXT_SUPP_RATES;
*pos = 0;
iwl4965_supported_rate_to_ie(pos, active_rates,
active_rate_basic, &left);
if (*pos > 0)
len += 2 + *pos;
fill_end:
/* fill in HT IE */
left -= 2;
if (left < 0)
return 0;
*pos++ = WLAN_EID_HT_CAPABILITY;
*pos = 0;
iwl_ht_cap_to_ie(sband, pos, &left);
if (*pos > 0)
len += 2 + *pos;
return (u16)len;
}
/* /*
* QoS support * QoS support
*/ */
...@@ -897,60 +653,6 @@ int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *heade ...@@ -897,60 +653,6 @@ int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *heade
return 1; return 1;
} }
/**
* iwl4965_scan_cancel - Cancel any currently executing HW scan
*
* NOTE: priv->mutex is not required before calling this function
*/
static int iwl4965_scan_cancel(struct iwl_priv *priv)
{
if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
clear_bit(STATUS_SCANNING, &priv->status);
return 0;
}
if (test_bit(STATUS_SCANNING, &priv->status)) {
if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
IWL_DEBUG_SCAN("Queuing scan abort.\n");
set_bit(STATUS_SCAN_ABORTING, &priv->status);
queue_work(priv->workqueue, &priv->abort_scan);
} else
IWL_DEBUG_SCAN("Scan abort already in progress.\n");
return test_bit(STATUS_SCANNING, &priv->status);
}
return 0;
}
/**
* iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
* @ms: amount of time to wait (in milliseconds) for scan to abort
*
* NOTE: priv->mutex must be held before calling this function
*/
static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
{
unsigned long now = jiffies;
int ret;
ret = iwl4965_scan_cancel(priv);
if (ret && ms) {
mutex_unlock(&priv->mutex);
while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
test_bit(STATUS_SCANNING, &priv->status))
msleep(1);
mutex_lock(&priv->mutex);
return test_bit(STATUS_SCANNING, &priv->status);
}
return ret;
}
static void iwl4965_sequence_reset(struct iwl_priv *priv) static void iwl4965_sequence_reset(struct iwl_priv *priv)
{ {
/* Reset ieee stats */ /* Reset ieee stats */
...@@ -962,7 +664,7 @@ static void iwl4965_sequence_reset(struct iwl_priv *priv) ...@@ -962,7 +664,7 @@ static void iwl4965_sequence_reset(struct iwl_priv *priv)
priv->last_frag_num = -1; priv->last_frag_num = -1;
priv->last_packet_time = 0; priv->last_packet_time = 0;
iwl4965_scan_cancel(priv); iwl_scan_cancel(priv);
} }
#define MAX_UCODE_BEACON_INTERVAL 4096 #define MAX_UCODE_BEACON_INTERVAL 4096
...@@ -1037,41 +739,6 @@ static void iwl4965_setup_rxon_timing(struct iwl_priv *priv) ...@@ -1037,41 +739,6 @@ static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
le16_to_cpu(priv->rxon_timing.atim_window)); le16_to_cpu(priv->rxon_timing.atim_window));
} }
static int iwl4965_scan_initiate(struct iwl_priv *priv)
{
if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
IWL_ERROR("APs don't scan.\n");
return 0;
}
if (!iwl_is_ready_rf(priv)) {
IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
return -EIO;
}
if (test_bit(STATUS_SCANNING, &priv->status)) {
IWL_DEBUG_SCAN("Scan already in progress.\n");
return -EAGAIN;
}
if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
IWL_DEBUG_SCAN("Scan request while abort pending. "
"Queuing.\n");
return -EAGAIN;
}
IWL_DEBUG_INFO("Starting scan...\n");
priv->scan_bands = 2;
set_bit(STATUS_SCANNING, &priv->status);
priv->scan_start = jiffies;
priv->scan_pass_start = priv->scan_start;
queue_work(priv->workqueue, &priv->request_scan);
return 0;
}
static void iwl_set_flags_for_band(struct iwl_priv *priv, static void iwl_set_flags_for_band(struct iwl_priv *priv,
enum ieee80211_band band) enum ieee80211_band band)
{ {
...@@ -1191,7 +858,7 @@ static int iwl4965_set_mode(struct iwl_priv *priv, int mode) ...@@ -1191,7 +858,7 @@ static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
return -EAGAIN; return -EAGAIN;
cancel_delayed_work(&priv->scan_check); cancel_delayed_work(&priv->scan_check);
if (iwl4965_scan_cancel_timeout(priv, 100)) { if (iwl_scan_cancel_timeout(priv, 100)) {
IWL_WARNING("Aborted scan still in progress after 100ms\n"); IWL_WARNING("Aborted scan still in progress after 100ms\n");
IWL_DEBUG_MAC80211("leaving - scan abort failed.\n"); IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
return -EAGAIN; return -EAGAIN;
...@@ -1260,7 +927,7 @@ int iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio) ...@@ -1260,7 +927,7 @@ int iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
disable_radio ? "OFF" : "ON"); disable_radio ? "OFF" : "ON");
if (disable_radio) { if (disable_radio) {
iwl4965_scan_cancel(priv); iwl_scan_cancel(priv);
/* FIXME: This is a workaround for AP */ /* FIXME: This is a workaround for AP */
if (priv->iw_mode != IEEE80211_IF_TYPE_AP) { if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
spin_lock_irqsave(&priv->lock, flags); spin_lock_irqsave(&priv->lock, flags);
...@@ -1680,118 +1347,6 @@ static void iwl4965_rx_beacon_notif(struct iwl_priv *priv, ...@@ -1680,118 +1347,6 @@ static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
queue_work(priv->workqueue, &priv->beacon_update); queue_work(priv->workqueue, &priv->beacon_update);
} }
/* Service response to REPLY_SCAN_CMD (0x80) */
static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb)
{
#ifdef CONFIG_IWLWIFI_DEBUG
struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
struct iwl4965_scanreq_notification *notif =
(struct iwl4965_scanreq_notification *)pkt->u.raw;
IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
#endif
}
/* Service SCAN_START_NOTIFICATION (0x82) */
static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb)
{
struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
struct iwl4965_scanstart_notification *notif =
(struct iwl4965_scanstart_notification *)pkt->u.raw;
priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
IWL_DEBUG_SCAN("Scan start: "
"%d [802.11%s] "
"(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
notif->channel,
notif->band ? "bg" : "a",
notif->tsf_high,
notif->tsf_low, notif->status, notif->beacon_timer);
}
/* Service SCAN_RESULTS_NOTIFICATION (0x83) */
static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb)
{
struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
struct iwl4965_scanresults_notification *notif =
(struct iwl4965_scanresults_notification *)pkt->u.raw;
IWL_DEBUG_SCAN("Scan ch.res: "
"%d [802.11%s] "
"(TSF: 0x%08X:%08X) - %d "
"elapsed=%lu usec (%dms since last)\n",
notif->channel,
notif->band ? "bg" : "a",
le32_to_cpu(notif->tsf_high),
le32_to_cpu(notif->tsf_low),
le32_to_cpu(notif->statistics[0]),
le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
jiffies_to_msecs(elapsed_jiffies
(priv->last_scan_jiffies, jiffies)));
priv->last_scan_jiffies = jiffies;
priv->next_scan_jiffies = 0;
}
/* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb)
{
struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
scan_notif->scanned_channels,
scan_notif->tsf_low,
scan_notif->tsf_high, scan_notif->status);
/* The HW is no longer scanning */
clear_bit(STATUS_SCAN_HW, &priv->status);
/* The scan completion notification came in, so kill that timer... */
cancel_delayed_work(&priv->scan_check);
IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
(priv->scan_bands == 2) ? "2.4" : "5.2",
jiffies_to_msecs(elapsed_jiffies
(priv->scan_pass_start, jiffies)));
/* Remove this scanned band from the list
* of pending bands to scan */
priv->scan_bands--;
/* If a request to abort was given, or the scan did not succeed
* then we reset the scan state machine and terminate,
* re-queuing another scan if one has been requested */
if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
IWL_DEBUG_INFO("Aborted scan completed.\n");
clear_bit(STATUS_SCAN_ABORTING, &priv->status);
} else {
/* If there are more bands on this scan pass reschedule */
if (priv->scan_bands > 0)
goto reschedule;
}
priv->last_scan_jiffies = jiffies;
priv->next_scan_jiffies = 0;
IWL_DEBUG_INFO("Setting scan to off\n");
clear_bit(STATUS_SCANNING, &priv->status);
IWL_DEBUG_INFO("Scan took %dms\n",
jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
queue_work(priv->workqueue, &priv->scan_completed);
return;
reschedule:
priv->scan_pass_start = jiffies;
queue_work(priv->workqueue, &priv->request_scan);
}
/* Handle notification from uCode that card's power state is changing /* Handle notification from uCode that card's power state is changing
* due to software, hardware, or critical temperature RFKILL */ * due to software, hardware, or critical temperature RFKILL */
static void iwl4965_rx_card_state_notif(struct iwl_priv *priv, static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
...@@ -1852,7 +1407,7 @@ static void iwl4965_rx_card_state_notif(struct iwl_priv *priv, ...@@ -1852,7 +1407,7 @@ static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
clear_bit(STATUS_RF_KILL_SW, &priv->status); clear_bit(STATUS_RF_KILL_SW, &priv->status);
if (!(flags & RXON_CARD_DISABLED)) if (!(flags & RXON_CARD_DISABLED))
iwl4965_scan_cancel(priv); iwl_scan_cancel(priv);
if ((test_bit(STATUS_RF_KILL_HW, &status) != if ((test_bit(STATUS_RF_KILL_HW, &status) !=
test_bit(STATUS_RF_KILL_HW, &priv->status)) || test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
...@@ -1902,13 +1457,9 @@ static void iwl4965_setup_rx_handlers(struct iwl_priv *priv) ...@@ -1902,13 +1457,9 @@ static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
*/ */
priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics; priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics; priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
/* scan handlers */
priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan; iwl_setup_rx_scan_handlers(priv);
priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
iwl4965_rx_scan_results_notif;
priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
iwl4965_rx_scan_complete_notif;
/* status change handler */ /* status change handler */
priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif; priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
...@@ -2456,138 +2007,6 @@ static irqreturn_t iwl4965_isr(int irq, void *data) ...@@ -2456,138 +2007,6 @@ static irqreturn_t iwl4965_isr(int irq, void *data)
return IRQ_NONE; return IRQ_NONE;
} }
/* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
* sending probe req. This should be set long enough to hear probe responses
* from more than one AP. */
#define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
#define IWL_ACTIVE_DWELL_TIME_52 (10)
/* For faster active scanning, scan will move to the next channel if fewer than
* PLCP_QUIET_THRESH packets are heard on this channel within
* ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
* time if it's a quiet channel (nothing responded to our probe, and there's
* no other traffic).
* Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
#define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
#define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
/* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
* Must be set longer than active dwell time.
* For the most reliable scan, set > AP beacon interval (typically 100msec). */
#define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
#define IWL_PASSIVE_DWELL_TIME_52 (10)
#define IWL_PASSIVE_DWELL_BASE (100)
#define IWL_CHANNEL_TUNE_TIME 5
static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
enum ieee80211_band band)
{
if (band == IEEE80211_BAND_5GHZ)
return IWL_ACTIVE_DWELL_TIME_52;
else
return IWL_ACTIVE_DWELL_TIME_24;
}
static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
enum ieee80211_band band)
{
u16 active = iwl4965_get_active_dwell_time(priv, band);
u16 passive = (band != IEEE80211_BAND_5GHZ) ?
IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
if (iwl_is_associated(priv)) {
/* If we're associated, we clamp the maximum passive
* dwell time to be 98% of the beacon interval (minus
* 2 * channel tune time) */
passive = priv->beacon_int;
if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
passive = IWL_PASSIVE_DWELL_BASE;
passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
}
if (passive <= active)
passive = active + 1;
return passive;
}
static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
enum ieee80211_band band,
u8 is_active, u8 direct_mask,
struct iwl4965_scan_channel *scan_ch)
{
const struct ieee80211_channel *channels = NULL;
const struct ieee80211_supported_band *sband;
const struct iwl_channel_info *ch_info;
u16 passive_dwell = 0;
u16 active_dwell = 0;
int added, i;
sband = iwl_get_hw_mode(priv, band);
if (!sband)
return 0;
channels = sband->channels;
active_dwell = iwl4965_get_active_dwell_time(priv, band);
passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
for (i = 0, added = 0; i < sband->n_channels; i++) {
if (channels[i].flags & IEEE80211_CHAN_DISABLED)
continue;
scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
ch_info = iwl_get_channel_info(priv, band,
scan_ch->channel);
if (!is_channel_valid(ch_info)) {
IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
scan_ch->channel);
continue;
}
if (!is_active || is_channel_passive(ch_info) ||
(channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
scan_ch->type = 0; /* passive */
else
scan_ch->type = 1; /* active */
if (scan_ch->type & 1)
scan_ch->type |= (direct_mask << 1);
scan_ch->active_dwell = cpu_to_le16(active_dwell);
scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
/* Set txpower levels to defaults */
scan_ch->tpc.dsp_atten = 110;
/* scan_pwr_info->tpc.dsp_atten; */
/*scan_pwr_info->tpc.tx_gain; */
if (band == IEEE80211_BAND_5GHZ)
scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
else {
scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
/* NOTE: if we were doing 6Mb OFDM for scans we'd use
* power level:
* scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
*/
}
IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
scan_ch->channel,
(scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
(scan_ch->type & 1) ?
active_dwell : passive_dwell);
scan_ch++;
added++;
}
IWL_DEBUG_SCAN("total channels to scan %d \n", added);
return added;
}
/****************************************************************************** /******************************************************************************
* *
* uCode download functions * uCode download functions
...@@ -3200,243 +2619,6 @@ static void iwl4965_bg_set_monitor(struct work_struct *work) ...@@ -3200,243 +2619,6 @@ static void iwl4965_bg_set_monitor(struct work_struct *work)
mutex_unlock(&priv->mutex); mutex_unlock(&priv->mutex);
} }
#define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
static void iwl4965_bg_scan_check(struct work_struct *data)
{
struct iwl_priv *priv =
container_of(data, struct iwl_priv, scan_check.work);
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
return;
mutex_lock(&priv->mutex);
if (test_bit(STATUS_SCANNING, &priv->status) ||
test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
IWL_DEBUG(IWL_DL_SCAN, "Scan completion watchdog resetting "
"adapter (%dms)\n",
jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
iwl4965_send_scan_abort(priv);
}
mutex_unlock(&priv->mutex);
}
static void iwl4965_bg_request_scan(struct work_struct *data)
{
struct iwl_priv *priv =
container_of(data, struct iwl_priv, request_scan);
struct iwl_host_cmd cmd = {
.id = REPLY_SCAN_CMD,
.len = sizeof(struct iwl4965_scan_cmd),
.meta.flags = CMD_SIZE_HUGE,
};
struct iwl4965_scan_cmd *scan;
struct ieee80211_conf *conf = NULL;
u16 cmd_len;
enum ieee80211_band band;
u8 direct_mask;
int ret = 0;
conf = ieee80211_get_hw_conf(priv->hw);
mutex_lock(&priv->mutex);
if (!iwl_is_ready(priv)) {
IWL_WARNING("request scan called when driver not ready.\n");
goto done;
}
/* Make sure the scan wasn't cancelled before this queued work
* was given the chance to run... */
if (!test_bit(STATUS_SCANNING, &priv->status))
goto done;
/* This should never be called or scheduled if there is currently
* a scan active in the hardware. */
if (test_bit(STATUS_SCAN_HW, &priv->status)) {
IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
"Ignoring second request.\n");
ret = -EIO;
goto done;
}
if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
goto done;
}
if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
goto done;
}
if (iwl_is_rfkill(priv)) {
IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
goto done;
}
if (!test_bit(STATUS_READY, &priv->status)) {
IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
goto done;
}
if (!priv->scan_bands) {
IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
goto done;
}
if (!priv->scan) {
priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
IWL_MAX_SCAN_SIZE, GFP_KERNEL);
if (!priv->scan) {
ret = -ENOMEM;
goto done;
}
}
scan = priv->scan;
memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
if (iwl_is_associated(priv)) {
u16 interval = 0;
u32 extra;
u32 suspend_time = 100;
u32 scan_suspend_time = 100;
unsigned long flags;
IWL_DEBUG_INFO("Scanning while associated...\n");
spin_lock_irqsave(&priv->lock, flags);
interval = priv->beacon_int;
spin_unlock_irqrestore(&priv->lock, flags);
scan->suspend_time = 0;
scan->max_out_time = cpu_to_le32(200 * 1024);
if (!interval)
interval = suspend_time;
extra = (suspend_time / interval) << 22;
scan_suspend_time = (extra |
((suspend_time % interval) * 1024));
scan->suspend_time = cpu_to_le32(scan_suspend_time);
IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
scan_suspend_time, interval);
}
/* We should add the ability for user to lock to PASSIVE ONLY */
if (priv->one_direct_scan) {
IWL_DEBUG_SCAN
("Kicking off one direct scan for '%s'\n",
iwl4965_escape_essid(priv->direct_ssid,
priv->direct_ssid_len));
scan->direct_scan[0].id = WLAN_EID_SSID;
scan->direct_scan[0].len = priv->direct_ssid_len;
memcpy(scan->direct_scan[0].ssid,
priv->direct_ssid, priv->direct_ssid_len);
direct_mask = 1;
} else if (!iwl_is_associated(priv) && priv->essid_len) {
IWL_DEBUG_SCAN
("Kicking off one direct scan for '%s' when not associated\n",
iwl4965_escape_essid(priv->essid, priv->essid_len));
scan->direct_scan[0].id = WLAN_EID_SSID;
scan->direct_scan[0].len = priv->essid_len;
memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
direct_mask = 1;
} else {
IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
direct_mask = 0;
}
scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
switch (priv->scan_bands) {
case 2:
scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
scan->tx_cmd.rate_n_flags =
iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
scan->good_CRC_th = 0;
band = IEEE80211_BAND_2GHZ;
break;
case 1:
scan->tx_cmd.rate_n_flags =
iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
RATE_MCS_ANT_B_MSK);
scan->good_CRC_th = IWL_GOOD_CRC_TH;
band = IEEE80211_BAND_5GHZ;
break;
default:
IWL_WARNING("Invalid scan band count\n");
goto done;
}
/* We don't build a direct scan probe request; the uCode will do
* that based on the direct_mask added to each channel entry */
cmd_len = iwl4965_fill_probe_req(priv, band,
(struct ieee80211_mgmt *)scan->data,
IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
scan->tx_cmd.len = cpu_to_le16(cmd_len);
/* select Rx chains */
/* Force use of chains B and C (0x6) for scan Rx.
* Avoid A (0x1) because of its off-channel reception on A-band.
* MIMO is not used here, but value is required to make uCode happy. */
scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
(0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
(0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
scan->filter_flags = RXON_FILTER_PROMISC_MSK;
if (direct_mask)
scan->channel_count =
iwl4965_get_channels_for_scan(
priv, band, 1, /* active */
direct_mask,
(void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
else
scan->channel_count =
iwl4965_get_channels_for_scan(
priv, band, 0, /* passive */
direct_mask,
(void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
RXON_FILTER_BCON_AWARE_MSK);
cmd.len += le16_to_cpu(scan->tx_cmd.len) +
scan->channel_count * sizeof(struct iwl4965_scan_channel);
cmd.data = scan;
scan->len = cpu_to_le16(cmd.len);
set_bit(STATUS_SCAN_HW, &priv->status);
ret = iwl_send_cmd_sync(priv, &cmd);
if (ret)
goto done;
queue_delayed_work(priv->workqueue, &priv->scan_check,
IWL_SCAN_CHECK_WATCHDOG);
mutex_unlock(&priv->mutex);
return;
done:
/* inform mac80211 scan aborted */
queue_work(priv->workqueue, &priv->scan_completed);
mutex_unlock(&priv->mutex);
}
static void iwl_bg_run_time_calib_work(struct work_struct *work) static void iwl_bg_run_time_calib_work(struct work_struct *work)
{ {
struct iwl_priv *priv = container_of(work, struct iwl_priv, struct iwl_priv *priv = container_of(work, struct iwl_priv,
...@@ -3521,7 +2703,7 @@ static void iwl4965_post_associate(struct iwl_priv *priv) ...@@ -3521,7 +2703,7 @@ static void iwl4965_post_associate(struct iwl_priv *priv)
if (!priv->vif || !priv->is_open) if (!priv->vif || !priv->is_open)
return; return;
iwl4965_scan_cancel_timeout(priv, 200); iwl_scan_cancel_timeout(priv, 200);
conf = ieee80211_get_hw_conf(priv->hw); conf = ieee80211_get_hw_conf(priv->hw);
...@@ -3615,24 +2797,9 @@ static void iwl4965_bg_post_associate(struct work_struct *data) ...@@ -3615,24 +2797,9 @@ static void iwl4965_bg_post_associate(struct work_struct *data)
} }
static void iwl4965_bg_abort_scan(struct work_struct *work)
{
struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
if (!iwl_is_ready(priv))
return;
mutex_lock(&priv->mutex);
set_bit(STATUS_SCAN_ABORTING, &priv->status);
iwl4965_send_scan_abort(priv);
mutex_unlock(&priv->mutex);
}
static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf); static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
static void iwl4965_bg_scan_completed(struct work_struct *work) static void iwl_bg_scan_completed(struct work_struct *work)
{ {
struct iwl_priv *priv = struct iwl_priv *priv =
container_of(work, struct iwl_priv, scan_completed); container_of(work, struct iwl_priv, scan_completed);
...@@ -3759,7 +2926,7 @@ static void iwl4965_mac_stop(struct ieee80211_hw *hw) ...@@ -3759,7 +2926,7 @@ static void iwl4965_mac_stop(struct ieee80211_hw *hw)
* RXON_FILTER_ASSOC_MSK BIT * RXON_FILTER_ASSOC_MSK BIT
*/ */
mutex_lock(&priv->mutex); mutex_lock(&priv->mutex);
iwl4965_scan_cancel_timeout(priv, 100); iwl_scan_cancel_timeout(priv, 100);
cancel_delayed_work(&priv->post_associate); cancel_delayed_work(&priv->post_associate);
mutex_unlock(&priv->mutex); mutex_unlock(&priv->mutex);
} }
...@@ -4071,7 +3238,7 @@ static int iwl4965_mac_config_interface(struct ieee80211_hw *hw, ...@@ -4071,7 +3238,7 @@ static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
!is_multicast_ether_addr(conf->bssid)) { !is_multicast_ether_addr(conf->bssid)) {
/* If there is currently a HW scan going on in the background /* If there is currently a HW scan going on in the background
* then we need to cancel it else the RXON below will fail. */ * then we need to cancel it else the RXON below will fail. */
if (iwl4965_scan_cancel_timeout(priv, 100)) { if (iwl_scan_cancel_timeout(priv, 100)) {
IWL_WARNING("Aborted scan still in progress " IWL_WARNING("Aborted scan still in progress "
"after 100ms\n"); "after 100ms\n");
IWL_DEBUG_MAC80211("leaving - scan abort failed.\n"); IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
...@@ -4096,7 +3263,7 @@ static int iwl4965_mac_config_interface(struct ieee80211_hw *hw, ...@@ -4096,7 +3263,7 @@ static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
} }
} else { } else {
iwl4965_scan_cancel_timeout(priv, 100); iwl_scan_cancel_timeout(priv, 100);
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
iwl4965_commit_rxon(priv); iwl4965_commit_rxon(priv);
} }
...@@ -4154,7 +3321,7 @@ static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw, ...@@ -4154,7 +3321,7 @@ static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
mutex_lock(&priv->mutex); mutex_lock(&priv->mutex);
if (iwl_is_ready_rf(priv)) { if (iwl_is_ready_rf(priv)) {
iwl4965_scan_cancel_timeout(priv, 100); iwl_scan_cancel_timeout(priv, 100);
cancel_delayed_work(&priv->post_associate); cancel_delayed_work(&priv->post_associate);
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
iwl4965_commit_rxon(priv); iwl4965_commit_rxon(priv);
...@@ -4268,7 +3435,7 @@ static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len) ...@@ -4268,7 +3435,7 @@ static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
} }
if (len) { if (len) {
IWL_DEBUG_SCAN("direct scan for %s [%d]\n ", IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
iwl4965_escape_essid(ssid, len), (int)len); iwl_escape_essid(ssid, len), (int)len);
priv->one_direct_scan = 1; priv->one_direct_scan = 1;
priv->direct_ssid_len = (u8) priv->direct_ssid_len = (u8)
...@@ -4277,7 +3444,7 @@ static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len) ...@@ -4277,7 +3444,7 @@ static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
} else } else
priv->one_direct_scan = 0; priv->one_direct_scan = 0;
rc = iwl4965_scan_initiate(priv); rc = iwl_scan_initiate(priv);
IWL_DEBUG_MAC80211("leave\n"); IWL_DEBUG_MAC80211("leave\n");
...@@ -4308,7 +3475,7 @@ static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw, ...@@ -4308,7 +3475,7 @@ static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
return; return;
} }
iwl4965_scan_cancel_timeout(priv, 100); iwl_scan_cancel_timeout(priv, 100);
key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK); key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
...@@ -4366,7 +3533,7 @@ static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, ...@@ -4366,7 +3533,7 @@ static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
} }
mutex_lock(&priv->mutex); mutex_lock(&priv->mutex);
iwl4965_scan_cancel_timeout(priv, 100); iwl_scan_cancel_timeout(priv, 100);
mutex_unlock(&priv->mutex); mutex_unlock(&priv->mutex);
/* If we are getting WEP group key and we didn't receive any key mapping /* If we are getting WEP group key and we didn't receive any key mapping
...@@ -4562,7 +3729,7 @@ static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw) ...@@ -4562,7 +3729,7 @@ static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
* clear RXON_FILTER_ASSOC_MSK bit * clear RXON_FILTER_ASSOC_MSK bit
*/ */
if (priv->iw_mode != IEEE80211_IF_TYPE_AP) { if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
iwl4965_scan_cancel_timeout(priv, 100); iwl_scan_cancel_timeout(priv, 100);
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK; priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
iwl4965_commit_rxon(priv); iwl4965_commit_rxon(priv);
} }
...@@ -4759,7 +3926,7 @@ static ssize_t store_flags(struct device *d, ...@@ -4759,7 +3926,7 @@ static ssize_t store_flags(struct device *d,
mutex_lock(&priv->mutex); mutex_lock(&priv->mutex);
if (le32_to_cpu(priv->staging_rxon.flags) != flags) { if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
/* Cancel any currently running scans... */ /* Cancel any currently running scans... */
if (iwl4965_scan_cancel_timeout(priv, 100)) if (iwl_scan_cancel_timeout(priv, 100))
IWL_WARNING("Could not cancel scan.\n"); IWL_WARNING("Could not cancel scan.\n");
else { else {
IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n", IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
...@@ -4794,7 +3961,7 @@ static ssize_t store_filter_flags(struct device *d, ...@@ -4794,7 +3961,7 @@ static ssize_t store_filter_flags(struct device *d,
mutex_lock(&priv->mutex); mutex_lock(&priv->mutex);
if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) { if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
/* Cancel any currently running scans... */ /* Cancel any currently running scans... */
if (iwl4965_scan_cancel_timeout(priv, 100)) if (iwl_scan_cancel_timeout(priv, 100))
IWL_WARNING("Could not cancel scan.\n"); IWL_WARNING("Could not cancel scan.\n");
else { else {
IWL_DEBUG_INFO("Committing rxon.filter_flags = " IWL_DEBUG_INFO("Committing rxon.filter_flags = "
...@@ -5062,9 +4229,6 @@ static void iwl_setup_deferred_work(struct iwl_priv *priv) ...@@ -5062,9 +4229,6 @@ static void iwl_setup_deferred_work(struct iwl_priv *priv)
INIT_WORK(&priv->up, iwl4965_bg_up); INIT_WORK(&priv->up, iwl4965_bg_up);
INIT_WORK(&priv->restart, iwl4965_bg_restart); INIT_WORK(&priv->restart, iwl4965_bg_restart);
INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish); INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill); INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update); INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor); INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
...@@ -5072,7 +4236,10 @@ static void iwl_setup_deferred_work(struct iwl_priv *priv) ...@@ -5072,7 +4236,10 @@ static void iwl_setup_deferred_work(struct iwl_priv *priv)
INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate); INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start); INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start); INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
/* FIXME : remove when resolved PENDING */
INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
iwl_setup_scan_deferred_work(priv);
if (priv->cfg->ops->lib->setup_deferred_work) if (priv->cfg->ops->lib->setup_deferred_work)
priv->cfg->ops->lib->setup_deferred_work(priv); priv->cfg->ops->lib->setup_deferred_work(priv);
......
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