return count;
}
+/*
+ * ieee80211_enable_ht should be called only after the operating band
+ * has been determined as ht configuration depends on the hw's
+ * HT abilities for a specific band.
+ */
+static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_ht_info *hti,
+ u16 ap_ht_cap_flags)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_supported_band *sband;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct ieee80211_bss_ht_conf ht;
+ struct sta_info *sta;
+ u32 changed = 0;
+ bool enable_ht = true, ht_changed;
+ enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
+
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
+ memset(&ht, 0, sizeof(ht));
+
+ /* HT is not supported */
+ if (!sband->ht_cap.ht_supported)
+ enable_ht = false;
+
+ /* check that channel matches the right operating channel */
+ if (local->hw.conf.channel->center_freq !=
+ ieee80211_channel_to_frequency(hti->control_chan))
+ enable_ht = false;
+
+ if (enable_ht) {
+ channel_type = NL80211_CHAN_HT20;
+
+ if (!(ap_ht_cap_flags & IEEE80211_HT_CAP_40MHZ_INTOLERANT) &&
+ (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) &&
+ (hti->ht_param & IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) {
+ switch(hti->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
+ case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
+ channel_type = NL80211_CHAN_HT40PLUS;
+ break;
+ case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
+ channel_type = NL80211_CHAN_HT40MINUS;
+ break;
+ }
+ }
+ }
+
+ ht_changed = conf_is_ht(&local->hw.conf) != enable_ht ||
+ channel_type != local->hw.conf.channel_type;
+
+ local->oper_channel_type = channel_type;
+
+ if (ht_changed) {
+ /* channel_type change automatically detected */
+ ieee80211_hw_config(local, 0);
+
+ rcu_read_lock();
+
+ sta = sta_info_get(local, ifmgd->bssid);
+ if (sta)
+ rate_control_rate_update(local, sband, sta,
+ IEEE80211_RC_HT_CHANGED);
+
+ rcu_read_unlock();
+
+ }
+
+ /* disable HT */
+ if (!enable_ht)
+ return 0;
+
+ ht.operation_mode = le16_to_cpu(hti->operation_mode);
+
+ /* if bss configuration changed store the new one */
+ if (memcmp(&sdata->vif.bss_conf.ht, &ht, sizeof(ht))) {
+ changed |= BSS_CHANGED_HT;
+ sdata->vif.bss_conf.ht = ht;
+ }
+
+ return changed;
+}
+
/* frame sending functions */
static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
/* u.deauth.reason_code == u.disassoc.reason_code */
mgmt->u.deauth.reason_code = cpu_to_le16(reason);
+ if (stype == IEEE80211_STYPE_DEAUTH)
+ cfg80211_send_deauth(sdata->dev, (u8 *) mgmt, skb->len);
+ else
+ cfg80211_send_disassoc(sdata->dev, (u8 *) mgmt, skb->len);
ieee80211_tx_skb(sdata, skb, ifmgd->flags & IEEE80211_STA_MFP_ENABLED);
}
ieee80211_tx_skb(sdata, skb, 0);
}
+void ieee80211_send_nullfunc(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ int powersave)
+{
+ struct sk_buff *skb;
+ struct ieee80211_hdr *nullfunc;
+ __le16 fc;
+
+ if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
+ return;
+
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24);
+ if (!skb) {
+ printk(KERN_DEBUG "%s: failed to allocate buffer for nullfunc "
+ "frame\n", sdata->dev->name);
+ return;
+ }
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+
+ nullfunc = (struct ieee80211_hdr *) skb_put(skb, 24);
+ memset(nullfunc, 0, 24);
+ fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
+ IEEE80211_FCTL_TODS);
+ if (powersave)
+ fc |= cpu_to_le16(IEEE80211_FCTL_PM);
+ nullfunc->frame_control = fc;
+ memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN);
+ memcpy(nullfunc->addr2, sdata->dev->dev_addr, ETH_ALEN);
+ memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN);
+
+ ieee80211_tx_skb(sdata, skb, 0);
+}
+
+/* powersave */
+static void ieee80211_enable_ps(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_conf *conf = &local->hw.conf;
+
+ if (conf->dynamic_ps_timeout > 0 &&
+ !(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) {
+ mod_timer(&local->dynamic_ps_timer, jiffies +
+ msecs_to_jiffies(conf->dynamic_ps_timeout));
+ } else {
+ if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
+ ieee80211_send_nullfunc(local, sdata, 1);
+ conf->flags |= IEEE80211_CONF_PS;
+ ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
+ }
+}
+
+static void ieee80211_change_ps(struct ieee80211_local *local)
+{
+ struct ieee80211_conf *conf = &local->hw.conf;
+
+ if (local->ps_sdata) {
+ if (!(local->ps_sdata->u.mgd.flags & IEEE80211_STA_ASSOCIATED))
+ return;
+
+ ieee80211_enable_ps(local, local->ps_sdata);
+ } else if (conf->flags & IEEE80211_CONF_PS) {
+ conf->flags &= ~IEEE80211_CONF_PS;
+ ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
+ del_timer_sync(&local->dynamic_ps_timer);
+ cancel_work_sync(&local->dynamic_ps_enable_work);
+ }
+}
+
+/* need to hold RTNL or interface lock */
+void ieee80211_recalc_ps(struct ieee80211_local *local)
+{
+ struct ieee80211_sub_if_data *sdata, *found = NULL;
+ int count = 0;
+
+ if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) {
+ local->ps_sdata = NULL;
+ return;
+ }
+
+ list_for_each_entry(sdata, &local->interfaces, list) {
+ if (!netif_running(sdata->dev))
+ continue;
+ if (sdata->vif.type != NL80211_IFTYPE_STATION)
+ continue;
+ found = sdata;
+ count++;
+ }
+
+ if (count == 1 && found->u.mgd.powersave)
+ local->ps_sdata = found;
+ else
+ local->ps_sdata = NULL;
+
+ ieee80211_change_ps(local);
+}
+
+void ieee80211_dynamic_ps_disable_work(struct work_struct *work)
+{
+ struct ieee80211_local *local =
+ container_of(work, struct ieee80211_local,
+ dynamic_ps_disable_work);
+
+ if (local->hw.conf.flags & IEEE80211_CONF_PS) {
+ local->hw.conf.flags &= ~IEEE80211_CONF_PS;
+ ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
+ }
+
+ ieee80211_wake_queues_by_reason(&local->hw,
+ IEEE80211_QUEUE_STOP_REASON_PS);
+}
+
+void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
+{
+ struct ieee80211_local *local =
+ container_of(work, struct ieee80211_local,
+ dynamic_ps_enable_work);
+ struct ieee80211_sub_if_data *sdata = local->ps_sdata;
+
+ /* can only happen when PS was just disabled anyway */
+ if (!sdata)
+ return;
+
+ if (local->hw.conf.flags & IEEE80211_CONF_PS)
+ return;
+
+ if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
+ ieee80211_send_nullfunc(local, sdata, 1);
+
+ local->hw.conf.flags |= IEEE80211_CONF_PS;
+ ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
+}
+
+void ieee80211_dynamic_ps_timer(unsigned long data)
+{
+ struct ieee80211_local *local = (void *) data;
+
+ queue_work(local->hw.workqueue, &local->dynamic_ps_enable_work);
+}
+
/* MLME */
static void ieee80211_sta_wmm_params(struct ieee80211_local *local,
struct ieee80211_if_managed *ifmgd,
u8 index, indexn1, indexn2;
struct ieee80211_tim_ie *tim = (struct ieee80211_tim_ie *) elems->tim;
+ if (unlikely(!tim || elems->tim_len < 4))
+ return false;
+
aid &= 0x3fff;
index = aid / 8;
mask = 1 << (aid & 7);
bss_info_changed |= BSS_CHANGED_BASIC_RATES;
ieee80211_bss_info_change_notify(sdata, bss_info_changed);
- if (local->powersave) {
- if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) &&
- local->hw.conf.dynamic_ps_timeout > 0) {
- mod_timer(&local->dynamic_ps_timer, jiffies +
- msecs_to_jiffies(
- local->hw.conf.dynamic_ps_timeout));
- } else {
- if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
- ieee80211_send_nullfunc(local, sdata, 1);
- conf->flags |= IEEE80211_CONF_PS;
- ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
- }
- }
+ /* will be same as sdata */
+ if (local->ps_sdata)
+ ieee80211_enable_ps(local, sdata);
netif_tx_start_all_queues(sdata->dev);
netif_carrier_on(sdata->dev);
u.mgd.beacon_loss_work);
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
- printk(KERN_DEBUG "%s: driver reports beacon loss from AP %pM "
- "- sending probe request\n", sdata->dev->name,
- sdata->u.mgd.bssid);
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: driver reports beacon loss from AP %pM "
+ "- sending probe request\n", sdata->dev->name,
+ sdata->u.mgd.bssid);
+ }
+#endif
ifmgd->flags |= IEEE80211_STA_PROBEREQ_POLL;
ieee80211_send_probe_req(sdata, ifmgd->bssid, ifmgd->ssid,
(local->hw.conf.flags & IEEE80211_CONF_PS)) &&
time_after(jiffies,
ifmgd->last_beacon + IEEE80211_MONITORING_INTERVAL)) {
- printk(KERN_DEBUG "%s: beacon loss from AP %pM "
- "- sending probe request\n",
- sdata->dev->name, ifmgd->bssid);
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: beacon loss from AP %pM "
+ "- sending probe request\n",
+ sdata->dev->name, ifmgd->bssid);
+ }
+#endif
ifmgd->flags |= IEEE80211_STA_PROBEREQ_POLL;
ieee80211_send_probe_req(sdata, ifmgd->bssid, ifmgd->ssid,
ifmgd->ssid_len, NULL, 0);
ieee80211_set_disassoc(sdata, true, false, 0);
ifmgd->flags &= ~IEEE80211_STA_AUTHENTICATED;
- cfg80211_send_rx_deauth(sdata->dev, (u8 *) mgmt, len);
+ cfg80211_send_deauth(sdata->dev, (u8 *) mgmt, len);
}
}
ieee80211_set_disassoc(sdata, false, false, reason_code);
- cfg80211_send_rx_disassoc(sdata->dev, (u8 *) mgmt, len);
+ cfg80211_send_disassoc(sdata->dev, (u8 *) mgmt, len);
}
* association next time. This works around some broken APs
* which do not correctly reject reassociation requests. */
ifmgd->flags &= ~IEEE80211_STA_PREV_BSSID_SET;
+ cfg80211_send_rx_assoc(sdata->dev, (u8 *) mgmt, len);
+ if (ifmgd->flags & IEEE80211_STA_EXT_SME) {
+ /* Wait for SME to decide what to do next */
+ ifmgd->state = IEEE80211_STA_MLME_DISABLED;
+ }
return;
}
for (i = 0; i < elems.ext_supp_rates_len; i++) {
int rate = (elems.ext_supp_rates[i] & 0x7f) * 5;
- bool is_basic = !!(elems.supp_rates[i] & 0x80);
+ bool is_basic = !!(elems.ext_supp_rates[i] & 0x80);
if (rate > 110)
have_higher_than_11mbit = true;
static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
{
- if (sdata->vif.type == NL80211_IFTYPE_STATION)
+ if (sdata->vif.type == NL80211_IFTYPE_STATION) {
+ /*
+ * Need to update last_beacon to avoid beacon loss
+ * test to trigger.
+ */
+ sdata->u.mgd.last_beacon = jiffies;
+
+
queue_work(sdata->local->hw.workqueue,
&sdata->u.mgd.work);
+ }
}
/* interface setup */
ieee80211_restart_sta_timer(sdata);
rcu_read_unlock();
}
-
-void ieee80211_dynamic_ps_disable_work(struct work_struct *work)
-{
- struct ieee80211_local *local =
- container_of(work, struct ieee80211_local,
- dynamic_ps_disable_work);
-
- if (local->hw.conf.flags & IEEE80211_CONF_PS) {
- local->hw.conf.flags &= ~IEEE80211_CONF_PS;
- ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
- }
-
- ieee80211_wake_queues_by_reason(&local->hw,
- IEEE80211_QUEUE_STOP_REASON_PS);
-}
-
-void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
-{
- struct ieee80211_local *local =
- container_of(work, struct ieee80211_local,
- dynamic_ps_enable_work);
- struct ieee80211_sub_if_data *sdata = local->scan_sdata;
-
- if (local->hw.conf.flags & IEEE80211_CONF_PS)
- return;
-
- if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
- ieee80211_send_nullfunc(local, sdata, 1);
-
- local->hw.conf.flags |= IEEE80211_CONF_PS;
- ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
-}
-
-void ieee80211_dynamic_ps_timer(unsigned long data)
-{
- struct ieee80211_local *local = (void *) data;
-
- queue_work(local->hw.workqueue, &local->dynamic_ps_enable_work);
-}
-
-void ieee80211_send_nullfunc(struct ieee80211_local *local,
- struct ieee80211_sub_if_data *sdata,
- int powersave)
-{
- struct sk_buff *skb;
- struct ieee80211_hdr *nullfunc;
- __le16 fc;
-
- if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
- return;
-
- skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24);
- if (!skb) {
- printk(KERN_DEBUG "%s: failed to allocate buffer for nullfunc "
- "frame\n", sdata->dev->name);
- return;
- }
- skb_reserve(skb, local->hw.extra_tx_headroom);
-
- nullfunc = (struct ieee80211_hdr *) skb_put(skb, 24);
- memset(nullfunc, 0, 24);
- fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
- IEEE80211_FCTL_TODS);
- if (powersave)
- fc |= cpu_to_le16(IEEE80211_FCTL_PM);
- nullfunc->frame_control = fc;
- memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN);
- memcpy(nullfunc->addr2, sdata->dev->dev_addr, ETH_ALEN);
- memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN);
-
- ieee80211_tx_skb(sdata, skb, 0);
-}
projects / deliverable / linux.git / blobdiff