/* Card State Notification indicated out of critical temperature
* since Card State Notification will not provide any temperature reading
* so pass the IWL_REDUCED_PERFORMANCE_THRESHOLD_2 temperature
* to iwl_legacy_tt_handler() to get out of IWL_CT_KILL state
*/
static void iwl_bg_ct_exit(struct work_struct *work)
{
struct iwl_priv *priv = container_of(work, struct iwl_priv, ct_exit);
struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
return;
if (!iwl_is_ready(priv))
return;
/* stop ct_kill_exit_tm timer */
del_timer_sync(&priv->thermal_throttle.ct_kill_exit_tm);
if (tt->state == IWL_TI_CT_KILL) {
IWL_ERR(priv,
"Device temperature below critical"
"- ucode awake!\n");
/*
* exit from CT_KILL state
* reset the current temperature reading
*/
priv->temperature = 0;
if (!priv->thermal_throttle.advanced_tt)
iwl_legacy_tt_handler(priv,
IWL_REDUCED_PERFORMANCE_THRESHOLD_2,
true);
else
iwl_advance_tt_handler(priv, CT_KILL_EXIT_THRESHOLD,
true);
}
}
/* Card State Notification indicated out of critical temperature
* since Card State Notification will not provide any temperature reading
* so pass the IWL_REDUCED_PERFORMANCE_THRESHOLD_2 temperature
* to iwl_legacy_tt_handler() to get out of IWL_CT_KILL state
*/
static void iwl_bg_ct_exit(void *p)
{
struct iwl_priv *priv = p;
struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
return;
if (!iwl_is_ready(priv))
return;
/* stop ct_kill_exit_tm timer */
del_timer_sync(&priv->thermal_throttle.ct_kill_exit_tm);
if (tt->state == IWL_TI_CT_KILL) {
IWL_ERR(priv,
"Device temperature below critical"
"- ucode awake!\n");
if (!priv->thermal_throttle.advanced_tt)
iwl_legacy_tt_handler(priv,
IWL_REDUCED_PERFORMANCE_THRESHOLD_2);
else
iwl_advance_tt_handler(priv, CT_KILL_EXIT_THRESHOLD);
}
}
/* Card State Notification indicated reach critical temperature
* if PSP not enable, no Thermal Throttling function will be performed
* just set the GP1 bit to acknowledge the event
* otherwise, go into IWL_TI_CT_KILL state
* since Card State Notification will not provide any temperature reading
* for Legacy mode
* so just pass the CT_KILL temperature to iwl_legacy_tt_handler()
* for advance mode
* pass CT_KILL_THRESHOLD+1 to make sure move into IWL_TI_CT_KILL state
*/
static void iwl_bg_ct_enter(void *p)
{
struct iwl_priv *priv = p;
struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
return;
if (!iwl_is_ready(priv))
return;
if (tt->state != IWL_TI_CT_KILL) {
IWL_ERR(priv, "Device reached critical temperature "
"- ucode going to sleep!\n");
if (!priv->thermal_throttle.advanced_tt)
iwl_legacy_tt_handler(priv,
IWL_MINIMAL_POWER_THRESHOLD);
else
iwl_advance_tt_handler(priv,
CT_KILL_THRESHOLD + 1);
}
}
/*
* CARD_STATE_CMD
*
* Use: Sets the device's internal card state to enable, disable, or halt
*
* When in the 'enable' state the card operates as normal.
* When in the 'disable' state, the card enters into a low power mode.
* When in the 'halt' state, the card is shut down and must be fully
* restarted to come back on.
*/
static int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
{
struct iwl_host_cmd cmd = {
.id = REPLY_CARD_STATE_CMD,
.len = sizeof(u32),
.data = &flags,
.meta.flags = meta_flag,
};
return iwl_send_cmd(priv, &cmd);
}
void iwl_radio_kill_sw_disable_radio(struct iwl_priv *priv)
{
unsigned long flags;
if (test_bit(STATUS_RF_KILL_SW, &priv->status))
return;
IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO OFF\n");
iwl_scan_cancel(priv);
/* FIXME: This is a workaround for AP */
if (priv->iw_mode != NL80211_IFTYPE_AP) {
spin_lock_irqsave(&priv->lock, flags);
iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
CSR_UCODE_SW_BIT_RFKILL);
spin_unlock_irqrestore(&priv->lock, flags);
/* call the host command only if no hw rf-kill set */
if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
iwl_is_ready(priv))
iwl_send_card_state(priv,
CARD_STATE_CMD_DISABLE, 0);
set_bit(STATUS_RF_KILL_SW, &priv->status);
/* make sure mac80211 stop sending Tx frame */
if (priv->mac80211_registered)
ieee80211_stop_queues(priv->hw);
}
}
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;
int ret = 0;
u32 tx_ant;
u16 cmd_len;
enum ieee80211_band band;
u8 n_probes = 2;
u8 rx_chain = priv->hw_params.valid_rx_ant;
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("Start 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);
n_probes++;
} else if (!iwl_is_associated(priv) && priv->essid_len) {
IWL_DEBUG_SCAN("Start direct scan for '%s' (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);
n_probes++;
} else {
IWL_DEBUG_SCAN("Start indirect scan.\n");
}
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;
if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
band = IEEE80211_BAND_2GHZ;
scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
tx_ant = iwl_scan_tx_ant(priv, band);
if (priv->active_rxon.flags & RXON_FLG_CHANNEL_MODE_PURE_40_MSK)
scan->tx_cmd.rate_n_flags =
iwl_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
tx_ant);
else
scan->tx_cmd.rate_n_flags =
iwl_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
tx_ant |
RATE_MCS_CCK_MSK);
scan->good_CRC_th = 0;
} else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
band = IEEE80211_BAND_5GHZ;
tx_ant = iwl_scan_tx_ant(priv, band);
scan->tx_cmd.rate_n_flags =
iwl_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
tx_ant);
scan->good_CRC_th = IWL_GOOD_CRC_TH;
/* Force use of chains B and C (0x6) for scan Rx for 4965
* Avoid A (0x1) because of its off-channel reception on A-band.
* MIMO is not used here, but value is required */
if ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)
rx_chain = 0x6;
} else {
IWL_WARNING("Invalid scan band count\n");
goto done;
}
scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
(rx_chain << RXON_RX_CHAIN_FORCE_SEL_POS) |
(0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
cmd_len = iwl_fill_probe_req(priv, band,
(struct ieee80211_mgmt *)scan->data,
IWL_MAX_SCAN_SIZE - sizeof(*scan));
scan->tx_cmd.len = cpu_to_le16(cmd_len);
if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
scan->filter_flags = RXON_FILTER_PROMISC_MSK;
scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
RXON_FILTER_BCON_AWARE_MSK);
scan->channel_count =
iwl_get_channels_for_scan(priv, band, 1, /* active */
n_probes,
(void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
if (scan->channel_count == 0) {
IWL_DEBUG_SCAN("channel count %d\n", scan->channel_count);
goto done;
}
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);
}
int iwlagn_mac_config(struct ieee80211_hw *hw, u32 changed)
{
struct iwl_priv *priv = hw->priv;
struct iwl_rxon_context *ctx;
struct ieee80211_conf *conf = &hw->conf;
struct ieee80211_channel *channel = conf->channel;
const struct iwl_channel_info *ch_info;
int ret = 0;
IWL_DEBUG_MAC80211(priv, "changed %#x", changed);
mutex_lock(&priv->mutex);
if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
goto out;
}
if (!iwl_is_ready(priv)) {
IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
goto out;
}
if (changed & (IEEE80211_CONF_CHANGE_SMPS |
IEEE80211_CONF_CHANGE_CHANNEL)) {
/* mac80211 uses static for non-HT which is what we want */
priv->current_ht_config.smps = conf->smps_mode;
/*
* Recalculate chain counts.
*
* If monitor mode is enabled then mac80211 will
* set up the SM PS mode to OFF if an HT channel is
* configured.
*/
if (priv->cfg->ops->hcmd->set_rxon_chain)
for_each_context(priv, ctx)
priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
}
if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
unsigned long flags;
ch_info = iwl_get_channel_info(priv, channel->band,
channel->hw_value);
if (!is_channel_valid(ch_info)) {
IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
ret = -EINVAL;
goto out;
}
spin_lock_irqsave(&priv->lock, flags);
for_each_context(priv, ctx) {
/* Configure HT40 channels */
if (ctx->ht.enabled != conf_is_ht(conf))
ctx->ht.enabled = conf_is_ht(conf);
if (ctx->ht.enabled) {
if (conf_is_ht40_minus(conf)) {
ctx->ht.extension_chan_offset =
IEEE80211_HT_PARAM_CHA_SEC_BELOW;
ctx->ht.is_40mhz = true;
} else if (conf_is_ht40_plus(conf)) {
ctx->ht.extension_chan_offset =
IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
ctx->ht.is_40mhz = true;
} else {
ctx->ht.extension_chan_offset =
IEEE80211_HT_PARAM_CHA_SEC_NONE;
ctx->ht.is_40mhz = false;
}
} else
ctx->ht.is_40mhz = false;
/*
* Default to no protection. Protection mode will
* later be set from BSS config in iwl_ht_conf
*/
ctx->ht.protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
/* if we are switching from ht to 2.4 clear flags
* from any ht related info since 2.4 does not
* support ht */
if (le16_to_cpu(ctx->staging.channel) !=
channel->hw_value)
ctx->staging.flags = 0;
iwl_set_rxon_channel(priv, channel, ctx);
iwl_set_rxon_ht(priv, &priv->current_ht_config);
iwl_set_flags_for_band(priv, ctx, channel->band,
ctx->vif);
}
spin_unlock_irqrestore(&priv->lock, flags);
iwl_update_bcast_stations(priv);
/*
* The list of supported rates and rate mask can be different
* for each band; since the band may have changed, reset
* the rate mask to what mac80211 lists.
*/
iwl_set_rate(priv);
}
/**
* iwl_restore_stations() - Restore driver known stations to device
*
* All stations considered active by driver, but not present in ucode, is
* restored.
*
* Function sleeps.
*/
void iwl_restore_stations(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
{
struct iwl_addsta_cmd sta_cmd;
struct iwl_link_quality_cmd lq;
unsigned long flags_spin;
int i;
bool found = false;
int ret;
bool send_lq;
if (!iwl_is_ready(priv)) {
IWL_DEBUG_INFO(priv, "Not ready yet, not restoring any stations.\n");
return;
}
IWL_DEBUG_ASSOC(priv, "Restoring all known stations ... start.\n");
spin_lock_irqsave(&priv->sta_lock, flags_spin);
for (i = 0; i < priv->hw_params.max_stations; i++) {
if (ctx->ctxid != priv->stations[i].ctxid)
continue;
if ((priv->stations[i].used & IWL_STA_DRIVER_ACTIVE) &&
!(priv->stations[i].used & IWL_STA_UCODE_ACTIVE)) {
IWL_DEBUG_ASSOC(priv, "Restoring sta %pM\n",
priv->stations[i].sta.sta.addr);
priv->stations[i].sta.mode = 0;
priv->stations[i].used |= IWL_STA_UCODE_INPROGRESS;
found = true;
}
}
for (i = 0; i < priv->hw_params.max_stations; i++) {
if ((priv->stations[i].used & IWL_STA_UCODE_INPROGRESS)) {
memcpy(&sta_cmd, &priv->stations[i].sta,
sizeof(struct iwl_addsta_cmd));
send_lq = false;
if (priv->stations[i].lq) {
memcpy(&lq, priv->stations[i].lq,
sizeof(struct iwl_link_quality_cmd));
send_lq = true;
}
spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
if (ret) {
spin_lock_irqsave(&priv->sta_lock, flags_spin);
IWL_ERR(priv, "Adding station %pM failed.\n",
priv->stations[i].sta.sta.addr);
priv->stations[i].used &= ~IWL_STA_DRIVER_ACTIVE;
priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS;
spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
}
/*
* Rate scaling has already been initialized, send
* current LQ command
*/
if (send_lq)
iwl_send_lq_cmd(priv, ctx, &lq, CMD_SYNC, true);
spin_lock_irqsave(&priv->sta_lock, flags_spin);
priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS;
}
}
spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
if (!found)
IWL_DEBUG_INFO(priv, "Restoring all known stations .... no stations to be restored.\n");
else
IWL_DEBUG_INFO(priv, "Restoring all known stations .... complete.\n");
}
static int iwl_send_remove_station(struct iwl_priv *priv,
const u8 *addr, int sta_id,
bool temporary)
{
struct iwl_rx_packet *pkt;
int ret;
unsigned long flags_spin;
struct iwl_rem_sta_cmd rm_sta_cmd;
struct iwl_host_cmd cmd = {
.id = REPLY_REMOVE_STA,
.len = sizeof(struct iwl_rem_sta_cmd),
.flags = CMD_SYNC,
.data = &rm_sta_cmd,
};
memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd));
rm_sta_cmd.num_sta = 1;
memcpy(&rm_sta_cmd.addr, addr, ETH_ALEN);
cmd.flags |= CMD_WANT_SKB;
ret = iwl_send_cmd(priv, &cmd);
if (ret)
return ret;
pkt = (struct iwl_rx_packet *)cmd.reply_page;
if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
pkt->hdr.flags);
ret = -EIO;
}
if (!ret) {
switch (pkt->u.rem_sta.status) {
case REM_STA_SUCCESS_MSK:
if (!temporary) {
spin_lock_irqsave(&priv->sta_lock, flags_spin);
iwl_sta_ucode_deactivate(priv, sta_id);
spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
}
IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n");
break;
default:
ret = -EIO;
IWL_ERR(priv, "REPLY_REMOVE_STA failed\n");
break;
}
}
iwl_free_pages(priv, cmd.reply_page);
return ret;
}
/**
* iwl_remove_station - Remove driver's knowledge of station.
*/
int iwl_remove_station(struct iwl_priv *priv, const u8 sta_id,
const u8 *addr)
{
unsigned long flags;
if (!iwl_is_ready(priv)) {
IWL_DEBUG_INFO(priv,
"Unable to remove station %pM, device not ready.\n",
addr);
/*
* It is typical for stations to be removed when we are
* going down. Return success since device will be down
* soon anyway
*/
return 0;
}
IWL_DEBUG_ASSOC(priv, "Removing STA from driver:%d %pM\n",
sta_id, addr);
if (WARN_ON(sta_id == IWL_INVALID_STATION))
return -EINVAL;
spin_lock_irqsave(&priv->sta_lock, flags);
if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
IWL_DEBUG_INFO(priv, "Removing %pM but non DRIVER active\n",
addr);
goto out_err;
}
if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
IWL_DEBUG_INFO(priv, "Removing %pM but non UCODE active\n",
addr);
goto out_err;
}
if (priv->stations[sta_id].used & IWL_STA_LOCAL) {
kfree(priv->stations[sta_id].lq);
priv->stations[sta_id].lq = NULL;
}
priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
priv->num_stations--;
BUG_ON(priv->num_stations < 0);
spin_unlock_irqrestore(&priv->sta_lock, flags);
return iwl_send_remove_station(priv, addr, sta_id, false);
out_err:
spin_unlock_irqrestore(&priv->sta_lock, flags);
return -EINVAL;
}
/**
* iwl_legacy_mac_config - mac80211 config callback
*/
int iwl_legacy_mac_config(struct ieee80211_hw *hw, u32 changed)
{
struct iwl_priv *priv = hw->priv;
const struct iwl_channel_info *ch_info;
struct ieee80211_conf *conf = &hw->conf;
struct ieee80211_channel *channel = conf->channel;
struct iwl_ht_config *ht_conf = &priv->current_ht_config;
struct iwl_rxon_context *ctx;
unsigned long flags = 0;
int ret = 0;
u16 ch;
int scan_active = 0;
bool ht_changed[NUM_IWL_RXON_CTX] = {};
if (WARN_ON(!priv->cfg->ops->legacy))
return -EOPNOTSUPP;
mutex_lock(&priv->mutex);
IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
channel->hw_value, changed);
if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
scan_active = 1;
IWL_DEBUG_MAC80211(priv, "scan active\n");
}
if (changed & (IEEE80211_CONF_CHANGE_SMPS |
IEEE80211_CONF_CHANGE_CHANNEL)) {
/* mac80211 uses static for non-HT which is what we want */
priv->current_ht_config.smps = conf->smps_mode;
/*
* Recalculate chain counts.
*
* If monitor mode is enabled then mac80211 will
* set up the SM PS mode to OFF if an HT channel is
* configured.
*/
if (priv->cfg->ops->hcmd->set_rxon_chain)
for_each_context(priv, ctx)
priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
}
/* during scanning mac80211 will delay channel setting until
* scan finish with changed = 0
*/
if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
if (scan_active)
goto set_ch_out;
ch = channel->hw_value;
ch_info = iwl_get_channel_info(priv, channel->band, ch);
if (!is_channel_valid(ch_info)) {
IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
ret = -EINVAL;
goto set_ch_out;
}
spin_lock_irqsave(&priv->lock, flags);
for_each_context(priv, ctx) {
/* Configure HT40 channels */
if (ctx->ht.enabled != conf_is_ht(conf)) {
ctx->ht.enabled = conf_is_ht(conf);
ht_changed[ctx->ctxid] = true;
}
if (ctx->ht.enabled) {
if (conf_is_ht40_minus(conf)) {
ctx->ht.extension_chan_offset =
IEEE80211_HT_PARAM_CHA_SEC_BELOW;
ctx->ht.is_40mhz = true;
} else if (conf_is_ht40_plus(conf)) {
ctx->ht.extension_chan_offset =
IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
ctx->ht.is_40mhz = true;
} else {
ctx->ht.extension_chan_offset =
IEEE80211_HT_PARAM_CHA_SEC_NONE;
ctx->ht.is_40mhz = false;
}
} else
ctx->ht.is_40mhz = false;
/*
* Default to no protection. Protection mode will
* later be set from BSS config in iwl_ht_conf
*/
ctx->ht.protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
/* if we are switching from ht to 2.4 clear flags
* from any ht related info since 2.4 does not
* support ht */
if ((le16_to_cpu(ctx->staging.channel) != ch))
ctx->staging.flags = 0;
iwl_set_rxon_channel(priv, channel, ctx);
iwl_set_rxon_ht(priv, ht_conf);
iwl_set_flags_for_band(priv, ctx, channel->band,
ctx->vif);
}
spin_unlock_irqrestore(&priv->lock, flags);
if (priv->cfg->ops->legacy->update_bcast_stations)
ret = priv->cfg->ops->legacy->update_bcast_stations(priv);
set_ch_out:
/* The list of supported rates and rate mask can be different
* for each band; since the band may have changed, reset
* the rate mask to what mac80211 lists */
iwl_set_rate(priv);
}
if (changed & (IEEE80211_CONF_CHANGE_PS |
IEEE80211_CONF_CHANGE_IDLE)) {
ret = iwl_power_update_mode(priv, false);
if (ret)
IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n");
}
if (changed & IEEE80211_CONF_CHANGE_POWER) {
IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
priv->tx_power_user_lmt, conf->power_level);
iwl_set_tx_power(priv, conf->power_level, false);
}
if (!iwl_is_ready(priv)) {
IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
goto out;
}
if (scan_active)
goto out;
for_each_context(priv, ctx) {
if (memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging)))
iwlcore_commit_rxon(priv, ctx);
else
IWL_DEBUG_INFO(priv,
"Not re-sending same RXON configuration.\n");
if (ht_changed[ctx->ctxid])
iwl_update_qos(priv, ctx);
}
out:
IWL_DEBUG_MAC80211(priv, "leave\n");
mutex_unlock(&priv->mutex);
return ret;
}
