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Diffstat (limited to 'net/mac80211/mlme.c')
-rw-r--r--net/mac80211/mlme.c443
1 files changed, 270 insertions, 173 deletions
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index f76b83341cf..e714ed8bb19 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -88,8 +88,6 @@ MODULE_PARM_DESC(probe_wait_ms,
#define TMR_RUNNING_TIMER 0
#define TMR_RUNNING_CHANSW 1
-#define DEAUTH_DISASSOC_LEN (24 /* hdr */ + 2 /* reason */)
-
/*
* All cfg80211 functions have to be called outside a locked
* section so that they can acquire a lock themselves... This
@@ -146,6 +144,9 @@ void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata)
if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
return;
+ if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
+ return;
+
mod_timer(&sdata->u.mgd.bcn_mon_timer,
round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout));
}
@@ -182,15 +183,15 @@ static u32 ieee80211_config_ht_tx(struct ieee80211_sub_if_data *sdata,
u16 ht_opmode;
bool disable_40 = false;
- sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+ sband = local->hw.wiphy->bands[local->oper_channel->band];
switch (sdata->vif.bss_conf.channel_type) {
case NL80211_CHAN_HT40PLUS:
- if (local->hw.conf.channel->flags & IEEE80211_CHAN_NO_HT40PLUS)
+ if (local->oper_channel->flags & IEEE80211_CHAN_NO_HT40PLUS)
disable_40 = true;
break;
case NL80211_CHAN_HT40MINUS:
- if (local->hw.conf.channel->flags & IEEE80211_CHAN_NO_HT40MINUS)
+ if (local->oper_channel->flags & IEEE80211_CHAN_NO_HT40MINUS)
disable_40 = true;
break;
default:
@@ -326,6 +327,26 @@ static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata,
ieee80211_ie_build_ht_cap(pos, &ht_cap, cap);
}
+static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb,
+ struct ieee80211_supported_band *sband)
+{
+ u8 *pos;
+ u32 cap;
+ struct ieee80211_sta_vht_cap vht_cap;
+
+ BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap));
+
+ memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap));
+
+ /* determine capability flags */
+ cap = vht_cap.cap;
+
+ /* reserve and fill IE */
+ pos = skb_put(skb, sizeof(struct ieee80211_vht_capabilities) + 2);
+ ieee80211_ie_build_vht_cap(pos, &vht_cap, cap);
+}
+
static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_local *local = sdata->local;
@@ -371,6 +392,7 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
4 + /* power capability */
2 + 2 * sband->n_channels + /* supported channels */
2 + sizeof(struct ieee80211_ht_cap) + /* HT */
+ 2 + sizeof(struct ieee80211_vht_capabilities) + /* VHT */
assoc_data->ie_len + /* extra IEs */
9, /* WMM */
GFP_KERNEL);
@@ -503,6 +525,9 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param,
sband, local->oper_channel, ifmgd->ap_smps);
+ if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
+ ieee80211_add_vht_ie(sdata, skb, sband);
+
/* if present, add any custom non-vendor IEs that go after HT */
if (assoc_data->ie_len && assoc_data->ie) {
noffset = ieee80211_ie_split_vendor(assoc_data->ie,
@@ -547,48 +572,6 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
ieee80211_tx_skb(sdata, skb);
}
-static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
- const u8 *bssid, u16 stype,
- u16 reason, bool send_frame,
- u8 *frame_buf)
-{
- struct ieee80211_local *local = sdata->local;
- struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt = (void *)frame_buf;
-
- /* build frame */
- mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
- mgmt->duration = 0; /* initialize only */
- mgmt->seq_ctrl = 0; /* initialize only */
- memcpy(mgmt->da, bssid, ETH_ALEN);
- memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
- memcpy(mgmt->bssid, bssid, ETH_ALEN);
- /* u.deauth.reason_code == u.disassoc.reason_code */
- mgmt->u.deauth.reason_code = cpu_to_le16(reason);
-
- if (send_frame) {
- skb = dev_alloc_skb(local->hw.extra_tx_headroom +
- DEAUTH_DISASSOC_LEN);
- if (!skb)
- return;
-
- skb_reserve(skb, local->hw.extra_tx_headroom);
-
- /* copy in frame */
- memcpy(skb_put(skb, DEAUTH_DISASSOC_LEN),
- mgmt, DEAUTH_DISASSOC_LEN);
-
- if (!(ifmgd->flags & IEEE80211_STA_MFP_ENABLED))
- IEEE80211_SKB_CB(skb)->flags |=
- IEEE80211_TX_INTFL_DONT_ENCRYPT;
-
- drv_mgd_prepare_tx(local, sdata);
-
- ieee80211_tx_skb(sdata, skb);
- }
-}
-
void ieee80211_send_pspoll(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata)
{
@@ -687,6 +670,7 @@ static void ieee80211_chswitch_work(struct work_struct *work)
/* XXX: shouldn't really modify cfg80211-owned data! */
ifmgd->associated->channel = sdata->local->oper_channel;
+ /* XXX: wait for a beacon first? */
ieee80211_wake_queues_by_reason(&sdata->local->hw,
IEEE80211_QUEUE_STOP_REASON_CSA);
out:
@@ -704,16 +688,13 @@ void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success)
trace_api_chswitch_done(sdata, success);
if (!success) {
- /*
- * If the channel switch was not successful, stay
- * around on the old channel. We currently lack
- * good handling of this situation, possibly we
- * should just drop the association.
- */
- sdata->local->csa_channel = sdata->local->oper_channel;
+ sdata_info(sdata,
+ "driver channel switch failed, disconnecting\n");
+ ieee80211_queue_work(&sdata->local->hw,
+ &ifmgd->csa_connection_drop_work);
+ } else {
+ ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
}
-
- ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
}
EXPORT_SYMBOL(ieee80211_chswitch_done);
@@ -758,61 +739,111 @@ void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
return;
new_ch = ieee80211_get_channel(sdata->local->hw.wiphy, new_freq);
- if (!new_ch || new_ch->flags & IEEE80211_CHAN_DISABLED)
+ if (!new_ch || new_ch->flags & IEEE80211_CHAN_DISABLED) {
+ sdata_info(sdata,
+ "AP %pM switches to unsupported channel (%d MHz), disconnecting\n",
+ ifmgd->associated->bssid, new_freq);
+ ieee80211_queue_work(&sdata->local->hw,
+ &ifmgd->csa_connection_drop_work);
return;
+ }
sdata->local->csa_channel = new_ch;
+ ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED;
+
+ if (sw_elem->mode)
+ ieee80211_stop_queues_by_reason(&sdata->local->hw,
+ IEEE80211_QUEUE_STOP_REASON_CSA);
+
if (sdata->local->ops->channel_switch) {
/* use driver's channel switch callback */
- struct ieee80211_channel_switch ch_switch;
- memset(&ch_switch, 0, sizeof(ch_switch));
- ch_switch.timestamp = timestamp;
- if (sw_elem->mode) {
- ch_switch.block_tx = true;
- ieee80211_stop_queues_by_reason(&sdata->local->hw,
- IEEE80211_QUEUE_STOP_REASON_CSA);
- }
- ch_switch.channel = new_ch;
- ch_switch.count = sw_elem->count;
- ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED;
+ struct ieee80211_channel_switch ch_switch = {
+ .timestamp = timestamp,
+ .block_tx = sw_elem->mode,
+ .channel = new_ch,
+ .count = sw_elem->count,
+ };
+
drv_channel_switch(sdata->local, &ch_switch);
return;
}
/* channel switch handled in software */
- if (sw_elem->count <= 1) {
+ if (sw_elem->count <= 1)
ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
- } else {
- if (sw_elem->mode)
- ieee80211_stop_queues_by_reason(&sdata->local->hw,
- IEEE80211_QUEUE_STOP_REASON_CSA);
- ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED;
+ else
mod_timer(&ifmgd->chswitch_timer,
- jiffies +
- msecs_to_jiffies(sw_elem->count *
- cbss->beacon_interval));
- }
+ TU_TO_EXP_TIME(sw_elem->count *
+ cbss->beacon_interval));
}
static void ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
- u16 capab_info, u8 *pwr_constr_elem,
- u8 pwr_constr_elem_len)
+ struct ieee80211_channel *channel,
+ const u8 *country_ie, u8 country_ie_len,
+ const u8 *pwr_constr_elem)
{
- struct ieee80211_conf *conf = &sdata->local->hw.conf;
+ struct ieee80211_country_ie_triplet *triplet;
+ int chan = ieee80211_frequency_to_channel(channel->center_freq);
+ int i, chan_pwr, chan_increment, new_ap_level;
+ bool have_chan_pwr = false;
- if (!(capab_info & WLAN_CAPABILITY_SPECTRUM_MGMT))
+ /* Invalid IE */
+ if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN)
return;
- /* Power constraint IE length should be 1 octet */
- if (pwr_constr_elem_len != 1)
- return;
+ triplet = (void *)(country_ie + 3);
+ country_ie_len -= 3;
+
+ switch (channel->band) {
+ default:
+ WARN_ON_ONCE(1);
+ /* fall through */
+ case IEEE80211_BAND_2GHZ:
+ case IEEE80211_BAND_60GHZ:
+ chan_increment = 1;
+ break;
+ case IEEE80211_BAND_5GHZ:
+ chan_increment = 4;
+ break;
+ }
+
+ /* find channel */
+ while (country_ie_len >= 3) {
+ u8 first_channel = triplet->chans.first_channel;
- if ((*pwr_constr_elem <= conf->channel->max_reg_power) &&
- (*pwr_constr_elem != sdata->local->power_constr_level)) {
- sdata->local->power_constr_level = *pwr_constr_elem;
- ieee80211_hw_config(sdata->local, 0);
+ if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID)
+ goto next;
+
+ for (i = 0; i < triplet->chans.num_channels; i++) {
+ if (first_channel + i * chan_increment == chan) {
+ have_chan_pwr = true;
+ chan_pwr = triplet->chans.max_power;
+ break;
+ }
+ }
+ if (have_chan_pwr)
+ break;
+
+ next:
+ triplet++;
+ country_ie_len -= 3;
}
+
+ if (!have_chan_pwr)
+ return;
+
+ new_ap_level = max_t(int, 0, chan_pwr - *pwr_constr_elem);
+
+ if (sdata->local->ap_power_level == new_ap_level)
+ return;
+
+ sdata_info(sdata,
+ "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n",
+ new_ap_level, chan_pwr, *pwr_constr_elem,
+ sdata->u.mgd.bssid);
+ sdata->local->ap_power_level = new_ap_level;
+ ieee80211_hw_config(sdata->local, 0);
}
void ieee80211_enable_dyn_ps(struct ieee80211_vif *vif)
@@ -1007,6 +1038,16 @@ void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency)
ieee80211_change_ps(local);
}
+void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata)
+{
+ bool ps_allowed = ieee80211_powersave_allowed(sdata);
+
+ if (sdata->vif.bss_conf.ps != ps_allowed) {
+ sdata->vif.bss_conf.ps = ps_allowed;
+ ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS);
+ }
+}
+
void ieee80211_dynamic_ps_disable_work(struct work_struct *work)
{
struct ieee80211_local *local =
@@ -1239,7 +1280,7 @@ static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
}
use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME);
- if (sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ)
+ if (sdata->local->oper_channel->band == IEEE80211_BAND_5GHZ)
use_short_slot = true;
if (use_protection != bss_conf->use_cts_prot) {
@@ -1307,9 +1348,11 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
mutex_lock(&local->iflist_mtx);
ieee80211_recalc_ps(local, -1);
- ieee80211_recalc_smps(local);
mutex_unlock(&local->iflist_mtx);
+ ieee80211_recalc_smps(local);
+ ieee80211_recalc_ps_vif(sdata);
+
netif_tx_start_all_queues(sdata->dev);
netif_carrier_on(sdata->dev);
}
@@ -1356,7 +1399,7 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
sta = sta_info_get(sdata, ifmgd->bssid);
if (sta) {
set_sta_flag(sta, WLAN_STA_BLOCK_BA);
- ieee80211_sta_tear_down_BA_sessions(sta, tx);
+ ieee80211_sta_tear_down_BA_sessions(sta, false);
}
mutex_unlock(&local->sta_mtx);
@@ -1371,6 +1414,9 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
}
local->ps_sdata = NULL;
+ /* disable per-vif ps */
+ ieee80211_recalc_ps_vif(sdata);
+
/* flush out any pending frame (e.g. DELBA) before deauth/disassoc */
if (tx)
drv_flush(local, false);
@@ -1401,7 +1447,7 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa));
memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask));
- local->power_constr_level = 0;
+ local->ap_power_level = 0;
del_timer_sync(&local->dynamic_ps_timer);
cancel_work_sync(&local->dynamic_ps_enable_work);
@@ -1542,7 +1588,8 @@ static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
ssid_len = ssid[1];
ieee80211_send_probe_req(sdata, dst, ssid + 2, ssid_len, NULL,
- 0, (u32) -1, true, false);
+ 0, (u32) -1, true, false,
+ ifmgd->associated->channel);
}
ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms);
@@ -1645,19 +1692,21 @@ struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw,
ssid_len = ssid[1];
skb = ieee80211_build_probe_req(sdata, cbss->bssid,
- (u32) -1, ssid + 2, ssid_len,
+ (u32) -1,
+ sdata->local->oper_channel,
+ ssid + 2, ssid_len,
NULL, 0, true);
return skb;
}
EXPORT_SYMBOL(ieee80211_ap_probereq_get);
-static void __ieee80211_connection_loss(struct ieee80211_sub_if_data *sdata)
+static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata,
+ bool transmit_frame)
{
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
struct ieee80211_local *local = sdata->local;
- u8 bssid[ETH_ALEN];
- u8 frame_buf[DEAUTH_DISASSOC_LEN];
+ u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
mutex_lock(&ifmgd->mtx);
if (!ifmgd->associated) {
@@ -1665,27 +1714,24 @@ static void __ieee80211_connection_loss(struct ieee80211_sub_if_data *sdata)
return;
}
- memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
-
- sdata_info(sdata, "Connection to AP %pM lost\n", bssid);
-
ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
- false, frame_buf);
+ transmit_frame, frame_buf);
+ ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED;
mutex_unlock(&ifmgd->mtx);
/*
* must be outside lock due to cfg80211,
* but that's not a problem.
*/
- cfg80211_send_deauth(sdata->dev, frame_buf, DEAUTH_DISASSOC_LEN);
+ cfg80211_send_deauth(sdata->dev, frame_buf, IEEE80211_DEAUTH_FRAME_LEN);
mutex_lock(&local->mtx);
ieee80211_recalc_idle(local);
mutex_unlock(&local->mtx);
}
-void ieee80211_beacon_connection_loss_work(struct work_struct *work)
+static void ieee80211_beacon_connection_loss_work(struct work_struct *work)
{
struct ieee80211_sub_if_data *sdata =
container_of(work, struct ieee80211_sub_if_data,
@@ -1701,10 +1747,24 @@ void ieee80211_beacon_connection_loss_work(struct work_struct *work)
rcu_read_unlock();
}
- if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
- __ieee80211_connection_loss(sdata);
- else
+ if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) {
+ sdata_info(sdata, "Connection to AP %pM lost\n",
+ ifmgd->bssid);
+ __ieee80211_disconnect(sdata, false);
+ } else {
ieee80211_mgd_probe_ap(sdata, true);
+ }
+}
+
+static void ieee80211_csa_connection_drop_work(struct work_struct *work)
+{
+ struct ieee80211_sub_if_data *sdata =
+ container_of(work, struct ieee80211_sub_if_data,
+ u.mgd.csa_connection_drop_work);
+
+ ieee80211_wake_queues_by_reason(&sdata->local->hw,
+ IEEE80211_QUEUE_STOP_REASON_CSA);
+ __ieee80211_disconnect(sdata, true);
}
void ieee80211_beacon_loss(struct ieee80211_vif *vif)
@@ -2232,14 +2292,10 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
mutex_unlock(&local->iflist_mtx);
}
- if (elems->ch_switch_elem && (elems->ch_switch_elem_len == 3) &&
- (memcmp(mgmt->bssid, sdata->u.mgd.associated->bssid,
- ETH_ALEN) == 0)) {
- struct ieee80211_channel_sw_ie *sw_elem =
- (struct ieee80211_channel_sw_ie *)elems->ch_switch_elem;
- ieee80211_sta_process_chanswitch(sdata, sw_elem,
+ if (elems->ch_switch_ie &&
+ memcmp(mgmt->bssid, sdata->u.mgd.associated->bssid, ETH_ALEN) == 0)
+ ieee80211_sta_process_chanswitch(sdata, elems->ch_switch_ie,
bss, rx_status->mactime);
- }
}
@@ -2326,7 +2382,7 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
if (baselen > len)
return;
- if (rx_status->freq != local->hw.conf.channel->center_freq)
+ if (rx_status->freq != local->oper_channel->center_freq)
return;
if (ifmgd->assoc_data && !ifmgd->assoc_data->have_beacon &&
@@ -2490,21 +2546,19 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
!(ifmgd->flags & IEEE80211_STA_DISABLE_11N)) {
struct ieee80211_supported_band *sband;
- sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+ sband = local->hw.wiphy->bands[local->oper_channel->band];
changed |= ieee80211_config_ht_tx(sdata, elems.ht_operation,
bssid, true);
}
- /* Note: country IE parsing is done for us by cfg80211 */
- if (elems.country_elem) {
- /* TODO: IBSS also needs this */
- if (elems.pwr_constr_elem)
- ieee80211_handle_pwr_constr(sdata,
- le16_to_cpu(mgmt->u.probe_resp.capab_info),
- elems.pwr_constr_elem,
- elems.pwr_constr_elem_len);
- }
+ if (elems.country_elem && elems.pwr_constr_elem &&
+ mgmt->u.probe_resp.capab_info &
+ cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT))
+ ieee80211_handle_pwr_constr(sdata, local->oper_channel,
+ elems.country_elem,
+ elems.country_elem_len,
+ elems.pwr_constr_elem);
ieee80211_bss_info_change_notify(sdata, changed);
}
@@ -2601,7 +2655,7 @@ static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
- u8 frame_buf[DEAUTH_DISASSOC_LEN];
+ u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason,
false, frame_buf);
@@ -2611,7 +2665,7 @@ static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
* must be outside lock due to cfg80211,
* but that's not a problem.
*/
- cfg80211_send_deauth(sdata->dev, frame_buf, DEAUTH_DISASSOC_LEN);
+ cfg80211_send_deauth(sdata->dev, frame_buf, IEEE80211_DEAUTH_FRAME_LEN);
mutex_lock(&local->mtx);
ieee80211_recalc_idle(local);
@@ -2673,7 +2727,8 @@ static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
* will not answer to direct packet in unassociated state.
*/
ieee80211_send_probe_req(sdata, NULL, ssidie + 2, ssidie[1],
- NULL, 0, (u32) -1, true, false);
+ NULL, 0, (u32) -1, true, false,
+ auth_data->bss->channel);
}
auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
@@ -2894,6 +2949,7 @@ void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata)
cancel_work_sync(&ifmgd->monitor_work);
cancel_work_sync(&ifmgd->beacon_connection_loss_work);
+ cancel_work_sync(&ifmgd->csa_connection_drop_work);
if (del_timer_sync(&ifmgd->timer))
set_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running);
@@ -2950,6 +3006,8 @@ void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work);
INIT_WORK(&ifmgd->beacon_connection_loss_work,
ieee80211_beacon_connection_loss_work);
+ INIT_WORK(&ifmgd->csa_connection_drop_work,
+ ieee80211_csa_connection_drop_work);
INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_work);
setup_timer(&ifmgd->timer, ieee80211_sta_timer,
(unsigned long) sdata);
@@ -3000,41 +3058,17 @@ int ieee80211_max_network_latency(struct notifier_block *nb,
return 0;
}
-static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
- struct cfg80211_bss *cbss, bool assoc)
+static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
+ struct cfg80211_bss *cbss)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
- struct ieee80211_bss *bss = (void *)cbss->priv;
- struct sta_info *sta = NULL;
- bool have_sta = false;
- int err;
int ht_cfreq;
enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
const u8 *ht_oper_ie;
const struct ieee80211_ht_operation *ht_oper = NULL;
struct ieee80211_supported_band *sband;
- if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data))
- return -EINVAL;
-
- if (assoc) {
- rcu_read_lock();
- have_sta = sta_info_get(sdata, cbss->bssid);
- rcu_read_unlock();
- }
-
- if (!have_sta) {
- sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL);
- if (!sta)
- return -ENOMEM;
- }
-
- mutex_lock(&local->mtx);
- ieee80211_recalc_idle(sdata->local);
- mutex_unlock(&local->mtx);
-
- /* switch to the right channel */
sband = local->hw.wiphy->bands[cbss->channel->band];
ifmgd->flags &= ~IEEE80211_STA_DISABLE_40MHZ;
@@ -3097,10 +3131,51 @@ static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
local->oper_channel = cbss->channel;
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
- if (sta) {
+ return 0;
+}
+
+static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
+ struct cfg80211_bss *cbss, bool assoc)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct ieee80211_bss *bss = (void *)cbss->priv;
+ struct sta_info *new_sta = NULL;
+ bool have_sta = false;
+ int err;
+
+ if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data))
+ return -EINVAL;
+
+ if (assoc) {
+ rcu_read_lock();
+ have_sta = sta_info_get(sdata, cbss->bssid);
+ rcu_read_unlock();
+ }
+
+ if (!have_sta) {
+ new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL);
+ if (!new_sta)
+ return -ENOMEM;
+ }
+
+ mutex_lock(&local->mtx);
+ ieee80211_recalc_idle(sdata->local);
+ mutex_unlock(&local->mtx);
+
+ if (new_sta) {
u32 rates = 0, basic_rates = 0;
bool have_higher_than_11mbit;
int min_rate = INT_MAX, min_rate_index = -1;
+ struct ieee80211_supported_band *sband;
+
+ sband = local->hw.wiphy->bands[cbss->channel->band];
+
+ err = ieee80211_prep_channel(sdata, cbss);
+ if (err) {
+ sta_info_free(local, new_sta);
+ return err;
+ }
ieee80211_get_rates(sband, bss->supp_rates,
bss->supp_rates_len,
@@ -3122,7 +3197,7 @@ static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
basic_rates = BIT(min_rate_index);
}
- sta->sta.supp_rates[cbss->channel->band] = rates;
+ new_sta->sta.supp_rates[cbss->channel->band] = rates;
sdata->vif.bss_conf.basic_rates = basic_rates;
/* cf. IEEE 802.11 9.2.12 */
@@ -3145,10 +3220,10 @@ static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
BSS_CHANGED_BEACON_INT);
if (assoc)
- sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
+ sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH);
- err = sta_info_insert(sta);
- sta = NULL;
+ err = sta_info_insert(new_sta);
+ new_sta = NULL;
if (err) {
sdata_info(sdata,
"failed to insert STA entry for the AP (error %d)\n",
@@ -3302,9 +3377,13 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
}
/* prepare assoc data */
-
- ifmgd->flags &= ~IEEE80211_STA_DISABLE_11N;
- ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED;
+
+ /*
+ * keep only the 40 MHz disable bit set as it might have
+ * been set during authentication already, all other bits
+ * should be reset for a new connection
+ */
+ ifmgd->flags &= IEEE80211_STA_DISABLE_40MHZ;
ifmgd->beacon_crc_valid = false;
@@ -3320,21 +3399,34 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP ||
req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) {
ifmgd->flags |= IEEE80211_STA_DISABLE_11N;
+ ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
netdev_info(sdata->dev,
- "disabling HT due to WEP/TKIP use\n");
+ "disabling HT/VHT due to WEP/TKIP use\n");
}
}
- if (req->flags & ASSOC_REQ_DISABLE_HT)
+ if (req->flags & ASSOC_REQ_DISABLE_HT) {
ifmgd->flags |= IEEE80211_STA_DISABLE_11N;
+ ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
+ }
/* Also disable HT if we don't support it or the AP doesn't use WMM */
sband = local->hw.wiphy->bands[req->bss->channel->band];
if (!sband->ht_cap.ht_supported ||
local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used) {
ifmgd->flags |= IEEE80211_STA_DISABLE_11N;
- netdev_info(sdata->dev,
- "disabling HT as WMM/QoS is not supported\n");
+ if (!bss->wmm_used)
+ netdev_info(sdata->dev,
+ "disabling HT as WMM/QoS is not supported by the AP\n");
+ }
+
+ /* disable VHT if we don't support it or the AP doesn't use WMM */
+ if (!sband->vht_cap.vht_supported ||
+ local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used) {
+ ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
+ if (!bss->wmm_used)
+ netdev_info(sdata->dev,
+ "disabling VHT as WMM/QoS is not supported by the AP\n");
}
memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa));
@@ -3456,7 +3548,7 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
struct cfg80211_deauth_request *req)
{
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
- u8 frame_buf[DEAUTH_DISASSOC_LEN];
+ u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
mutex_lock(&ifmgd->mtx);
@@ -3471,17 +3563,21 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
req->bssid, req->reason_code);
if (ifmgd->associated &&
- ether_addr_equal(ifmgd->associated->bssid, req->bssid))
+ ether_addr_equal(ifmgd->associated->bssid, req->bssid)) {
ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
req->reason_code, true, frame_buf);
- else
+ } else {
+ drv_mgd_prepare_tx(sdata->local, sdata);
ieee80211_send_deauth_disassoc(sdata, req->bssid,
IEEE80211_STYPE_DEAUTH,
req->reason_code, true,
frame_buf);
+ }
+
mutex_unlock(&ifmgd->mtx);
- __cfg80211_send_deauth(sdata->dev, frame_buf, DEAUTH_DISASSOC_LEN);
+ __cfg80211_send_deauth(sdata->dev, frame_buf,
+ IEEE80211_DEAUTH_FRAME_LEN);
mutex_lock(&sdata->local->mtx);
ieee80211_recalc_idle(sdata->local);
@@ -3495,7 +3591,7 @@ int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
{
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
u8 bssid[ETH_ALEN];
- u8 frame_buf[DEAUTH_DISASSOC_LEN];
+ u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
mutex_lock(&ifmgd->mtx);
@@ -3520,7 +3616,8 @@ int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
frame_buf);
mutex_unlock(&ifmgd->mtx);
- __cfg80211_send_disassoc(sdata->dev, frame_buf, DEAUTH_DISASSOC_LEN);
+ __cfg80211_send_disassoc(sdata->dev, frame_buf,
+ IEEE80211_DEAUTH_FRAME_LEN);
mutex_lock(&sdata->local->mtx);
ieee80211_recalc_idle(sdata->local);