--- /dev/null
+/*
+ * Mac80211 STA API for ST-Ericsson CW1200 drivers
+ *
+ * Copyright (c) 2010, ST-Ericsson
+ * Author: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/vmalloc.h>
+#include <linux/sched.h>
+#include <linux/firmware.h>
+#include <linux/module.h>
+#include <linux/etherdevice.h>
+
+#include "cw1200.h"
+#include "sta.h"
+#include "fwio.h"
+#include "bh.h"
+#include "debug.h"
+
+#ifndef ERP_INFO_BYTE_OFFSET
+#define ERP_INFO_BYTE_OFFSET 2
+#endif
+
+static void cw1200_do_join(struct cw1200_common *priv);
+static void cw1200_do_unjoin(struct cw1200_common *priv);
+
+static int cw1200_upload_beacon(struct cw1200_common *priv);
+static int cw1200_upload_pspoll(struct cw1200_common *priv);
+static int cw1200_upload_null(struct cw1200_common *priv);
+static int cw1200_upload_qosnull(struct cw1200_common *priv);
+static int cw1200_start_ap(struct cw1200_common *priv);
+static int cw1200_update_beaconing(struct cw1200_common *priv);
+static int cw1200_enable_beaconing(struct cw1200_common *priv,
+ bool enable);
+static void __cw1200_sta_notify(struct ieee80211_hw *dev,
+ struct ieee80211_vif *vif,
+ enum sta_notify_cmd notify_cmd,
+ int link_id);
+static int __cw1200_flush(struct cw1200_common *priv, bool drop);
+
+static inline void __cw1200_free_event_queue(struct list_head *list)
+{
+ struct cw1200_wsm_event *event, *tmp;
+ list_for_each_entry_safe(event, tmp, list, link) {
+ list_del(&event->link);
+ kfree(event);
+ }
+}
+
+/* ******************************************************************** */
+/* STA API */
+
+int cw1200_start(struct ieee80211_hw *dev)
+{
+ struct cw1200_common *priv = dev->priv;
+ int ret = 0;
+
+ cw1200_pm_stay_awake(&priv->pm_state, HZ);
+
+ mutex_lock(&priv->conf_mutex);
+
+ /* default EDCA */
+ WSM_EDCA_SET(&priv->edca, 0, 0x0002, 0x0003, 0x0007, 47, 0xc8, false);
+ WSM_EDCA_SET(&priv->edca, 1, 0x0002, 0x0007, 0x000f, 94, 0xc8, false);
+ WSM_EDCA_SET(&priv->edca, 2, 0x0003, 0x000f, 0x03ff, 0, 0xc8, false);
+ WSM_EDCA_SET(&priv->edca, 3, 0x0007, 0x000f, 0x03ff, 0, 0xc8, false);
+ ret = wsm_set_edca_params(priv, &priv->edca);
+ if (ret)
+ goto out;
+
+ ret = cw1200_set_uapsd_param(priv, &priv->edca);
+ if (ret)
+ goto out;
+
+ priv->setbssparams_done = false;
+
+ memcpy(priv->mac_addr, dev->wiphy->perm_addr, ETH_ALEN);
+ priv->mode = NL80211_IFTYPE_MONITOR;
+ priv->wep_default_key_id = -1;
+
+ priv->cqm_beacon_loss_count = 10;
+
+ ret = cw1200_setup_mac(priv);
+ if (ret)
+ goto out;
+
+out:
+ mutex_unlock(&priv->conf_mutex);
+ return ret;
+}
+
+void cw1200_stop(struct ieee80211_hw *dev)
+{
+ struct cw1200_common *priv = dev->priv;
+ LIST_HEAD(list);
+ int i;
+
+ wsm_lock_tx(priv);
+
+ while (down_trylock(&priv->scan.lock)) {
+ /* Scan is in progress. Force it to stop. */
+ priv->scan.req = NULL;
+ schedule();
+ }
+ up(&priv->scan.lock);
+
+ cancel_delayed_work_sync(&priv->scan.probe_work);
+ cancel_delayed_work_sync(&priv->scan.timeout);
+ cancel_delayed_work_sync(&priv->clear_recent_scan_work);
+ cancel_delayed_work_sync(&priv->join_timeout);
+ cw1200_cqm_bssloss_sm(priv, 0, 0, 0);
+ cancel_work_sync(&priv->unjoin_work);
+ cancel_delayed_work_sync(&priv->link_id_gc_work);
+ flush_workqueue(priv->workqueue);
+ del_timer_sync(&priv->mcast_timeout);
+ mutex_lock(&priv->conf_mutex);
+ priv->mode = NL80211_IFTYPE_UNSPECIFIED;
+ priv->listening = false;
+
+ spin_lock(&priv->event_queue_lock);
+ list_splice_init(&priv->event_queue, &list);
+ spin_unlock(&priv->event_queue_lock);
+ __cw1200_free_event_queue(&list);
+
+
+ priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
+ priv->join_pending = false;
+
+ for (i = 0; i < 4; i++)
+ cw1200_queue_clear(&priv->tx_queue[i]);
+ mutex_unlock(&priv->conf_mutex);
+ tx_policy_clean(priv);
+
+ /* HACK! */
+ if (atomic_xchg(&priv->tx_lock, 1) != 1)
+ pr_debug("[STA] TX is force-unlocked due to stop request.\n");
+
+ wsm_unlock_tx(priv);
+ atomic_xchg(&priv->tx_lock, 0); /* for recovery to work */
+}
+
+static int cw1200_bssloss_mitigation = 1;
+module_param(cw1200_bssloss_mitigation, int, 0644);
+MODULE_PARM_DESC(cw1200_bssloss_mitigation, "BSS Loss mitigation. 0 == disabled, 1 == enabled (default)");
+
+
+void __cw1200_cqm_bssloss_sm(struct cw1200_common *priv,
+ int init, int good, int bad)
+{
+ int tx = 0;
+
+ priv->delayed_link_loss = 0;
+ cancel_work_sync(&priv->bss_params_work);
+
+ pr_debug("[STA] CQM BSSLOSS_SM: state: %d init %d good %d bad: %d txlock: %d uj: %d\n",
+ priv->bss_loss_state,
+ init, good, bad,
+ atomic_read(&priv->tx_lock),
+ priv->delayed_unjoin);
+
+ /* If we have a pending unjoin */
+ if (priv->delayed_unjoin)
+ return;
+
+ if (init) {
+ queue_delayed_work(priv->workqueue,
+ &priv->bss_loss_work,
+ HZ);
+ priv->bss_loss_state = 0;
+
+ /* Skip the confimration procedure in P2P case */
+ if (!priv->vif->p2p && !atomic_read(&priv->tx_lock))
+ tx = 1;
+ } else if (good) {
+ cancel_delayed_work_sync(&priv->bss_loss_work);
+ priv->bss_loss_state = 0;
+ queue_work(priv->workqueue, &priv->bss_params_work);
+ } else if (bad) {
+ /* XXX Should we just keep going until we time out? */
+ if (priv->bss_loss_state < 3)
+ tx = 1;
+ } else {
+ cancel_delayed_work_sync(&priv->bss_loss_work);
+ priv->bss_loss_state = 0;
+ }
+
+ /* Bypass mitigation if it's disabled */
+ if (!cw1200_bssloss_mitigation)
+ tx = 0;
+
+ /* Spit out a NULL packet to our AP if necessary */
+ if (tx) {
+ struct sk_buff *skb;
+
+ priv->bss_loss_state++;
+
+ skb = ieee80211_nullfunc_get(priv->hw, priv->vif);
+ WARN_ON(!skb);
+ if (skb)
+ cw1200_tx(priv->hw, NULL, skb);
+ }
+}
+
+int cw1200_add_interface(struct ieee80211_hw *dev,
+ struct ieee80211_vif *vif)
+{
+ int ret;
+ struct cw1200_common *priv = dev->priv;
+ /* __le32 auto_calibration_mode = __cpu_to_le32(1); */
+
+ vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
+ IEEE80211_VIF_SUPPORTS_UAPSD |
+ IEEE80211_VIF_SUPPORTS_CQM_RSSI;
+
+ mutex_lock(&priv->conf_mutex);
+
+ if (priv->mode != NL80211_IFTYPE_MONITOR) {
+ mutex_unlock(&priv->conf_mutex);
+ return -EOPNOTSUPP;
+ }
+
+ switch (vif->type) {
+ case NL80211_IFTYPE_STATION:
+ case NL80211_IFTYPE_ADHOC:
+ case NL80211_IFTYPE_MESH_POINT:
+ case NL80211_IFTYPE_AP:
+ priv->mode = vif->type;
+ break;
+ default:
+ mutex_unlock(&priv->conf_mutex);
+ return -EOPNOTSUPP;
+ }
+
+ priv->vif = vif;
+ memcpy(priv->mac_addr, vif->addr, ETH_ALEN);
+ ret = cw1200_setup_mac(priv);
+ /* Enable auto-calibration */
+ /* Exception in subsequent channel switch; disabled.
+ * wsm_write_mib(priv, WSM_MIB_ID_SET_AUTO_CALIBRATION_MODE,
+ * &auto_calibration_mode, sizeof(auto_calibration_mode));
+ */
+
+ mutex_unlock(&priv->conf_mutex);
+ return ret;
+}
+
+void cw1200_remove_interface(struct ieee80211_hw *dev,
+ struct ieee80211_vif *vif)
+{
+ struct cw1200_common *priv = dev->priv;
+ struct wsm_reset reset = {
+ .reset_statistics = true,
+ };
+ int i;
+
+ mutex_lock(&priv->conf_mutex);
+ switch (priv->join_status) {
+ case CW1200_JOIN_STATUS_JOINING:
+ case CW1200_JOIN_STATUS_PRE_STA:
+ case CW1200_JOIN_STATUS_STA:
+ case CW1200_JOIN_STATUS_IBSS:
+ wsm_lock_tx(priv);
+ if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0)
+ wsm_unlock_tx(priv);
+ break;
+ case CW1200_JOIN_STATUS_AP:
+ for (i = 0; priv->link_id_map; ++i) {
+ if (priv->link_id_map & BIT(i)) {
+ reset.link_id = i;
+ wsm_reset(priv, &reset);
+ priv->link_id_map &= ~BIT(i);
+ }
+ }
+ memset(priv->link_id_db, 0, sizeof(priv->link_id_db));
+ priv->sta_asleep_mask = 0;
+ priv->enable_beacon = false;
+ priv->tx_multicast = false;
+ priv->aid0_bit_set = false;
+ priv->buffered_multicasts = false;
+ priv->pspoll_mask = 0;
+ reset.link_id = 0;
+ wsm_reset(priv, &reset);
+ break;
+ case CW1200_JOIN_STATUS_MONITOR:
+ cw1200_update_listening(priv, false);
+ break;
+ default:
+ break;
+ }
+ priv->vif = NULL;
+ priv->mode = NL80211_IFTYPE_MONITOR;
+ eth_zero_addr(priv->mac_addr);
+ memset(&priv->p2p_ps_modeinfo, 0, sizeof(priv->p2p_ps_modeinfo));
+ cw1200_free_keys(priv);
+ cw1200_setup_mac(priv);
+ priv->listening = false;
+ priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
+ if (!__cw1200_flush(priv, true))
+ wsm_unlock_tx(priv);
+
+ mutex_unlock(&priv->conf_mutex);
+}
+
+int cw1200_change_interface(struct ieee80211_hw *dev,
+ struct ieee80211_vif *vif,
+ enum nl80211_iftype new_type,
+ bool p2p)
+{
+ int ret = 0;
+ pr_debug("change_interface new: %d (%d), old: %d (%d)\n", new_type,
+ p2p, vif->type, vif->p2p);
+
+ if (new_type != vif->type || vif->p2p != p2p) {
+ cw1200_remove_interface(dev, vif);
+ vif->type = new_type;
+ vif->p2p = p2p;
+ ret = cw1200_add_interface(dev, vif);
+ }
+
+ return ret;
+}
+
+int cw1200_config(struct ieee80211_hw *dev, u32 changed)
+{
+ int ret = 0;
+ struct cw1200_common *priv = dev->priv;
+ struct ieee80211_conf *conf = &dev->conf;
+
+ pr_debug("CONFIG CHANGED: %08x\n", changed);
+
+ down(&priv->scan.lock);
+ mutex_lock(&priv->conf_mutex);
+ /* TODO: IEEE80211_CONF_CHANGE_QOS */
+ /* TODO: IEEE80211_CONF_CHANGE_LISTEN_INTERVAL */
+
+ if (changed & IEEE80211_CONF_CHANGE_POWER) {
+ priv->output_power = conf->power_level;
+ pr_debug("[STA] TX power: %d\n", priv->output_power);
+ wsm_set_output_power(priv, priv->output_power * 10);
+ }
+
+ if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) &&
+ (priv->channel != conf->chandef.chan)) {
+ struct ieee80211_channel *ch = conf->chandef.chan;
+ struct wsm_switch_channel channel = {
+ .channel_number = ch->hw_value,
+ };
+ pr_debug("[STA] Freq %d (wsm ch: %d).\n",
+ ch->center_freq, ch->hw_value);
+
+ /* __cw1200_flush() implicitly locks tx, if successful */
+ if (!__cw1200_flush(priv, false)) {
+ if (!wsm_switch_channel(priv, &channel)) {
+ ret = wait_event_timeout(priv->channel_switch_done,
+ !priv->channel_switch_in_progress,
+ 3 * HZ);
+ if (ret) {
+ /* Already unlocks if successful */
+ priv->channel = ch;
+ ret = 0;
+ } else {
+ ret = -ETIMEDOUT;
+ }
+ } else {
+ /* Unlock if switch channel fails */
+ wsm_unlock_tx(priv);
+ }
+ }
+ }
+
+ if (changed & IEEE80211_CONF_CHANGE_PS) {
+ if (!(conf->flags & IEEE80211_CONF_PS))
+ priv->powersave_mode.mode = WSM_PSM_ACTIVE;
+ else if (conf->dynamic_ps_timeout <= 0)
+ priv->powersave_mode.mode = WSM_PSM_PS;
+ else
+ priv->powersave_mode.mode = WSM_PSM_FAST_PS;
+
+ /* Firmware requires that value for this 1-byte field must
+ * be specified in units of 500us. Values above the 128ms
+ * threshold are not supported.
+ */
+ if (conf->dynamic_ps_timeout >= 0x80)
+ priv->powersave_mode.fast_psm_idle_period = 0xFF;
+ else
+ priv->powersave_mode.fast_psm_idle_period =
+ conf->dynamic_ps_timeout << 1;
+
+ if (priv->join_status == CW1200_JOIN_STATUS_STA &&
+ priv->bss_params.aid)
+ cw1200_set_pm(priv, &priv->powersave_mode);
+ }
+
+ if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
+ /* TBD: It looks like it's transparent
+ * there's a monitor interface present -- use this
+ * to determine for example whether to calculate
+ * timestamps for packets or not, do not use instead
+ * of filter flags!
+ */
+ }
+
+ if (changed & IEEE80211_CONF_CHANGE_IDLE) {
+ struct wsm_operational_mode mode = {
+ .power_mode = cw1200_power_mode,
+ .disable_more_flag_usage = true,
+ };
+
+ wsm_lock_tx(priv);
+ /* Disable p2p-dev mode forced by TX request */
+ if ((priv->join_status == CW1200_JOIN_STATUS_MONITOR) &&
+ (conf->flags & IEEE80211_CONF_IDLE) &&
+ !priv->listening) {
+ cw1200_disable_listening(priv);
+ priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
+ }
+ wsm_set_operational_mode(priv, &mode);
+ wsm_unlock_tx(priv);
+ }
+
+ if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) {
+ pr_debug("[STA] Retry limits: %d (long), %d (short).\n",
+ conf->long_frame_max_tx_count,
+ conf->short_frame_max_tx_count);
+ spin_lock_bh(&priv->tx_policy_cache.lock);
+ priv->long_frame_max_tx_count = conf->long_frame_max_tx_count;
+ priv->short_frame_max_tx_count =
+ (conf->short_frame_max_tx_count < 0x0F) ?
+ conf->short_frame_max_tx_count : 0x0F;
+ priv->hw->max_rate_tries = priv->short_frame_max_tx_count;
+ spin_unlock_bh(&priv->tx_policy_cache.lock);
+ }
+ mutex_unlock(&priv->conf_mutex);
+ up(&priv->scan.lock);
+ return ret;
+}
+
+void cw1200_update_filtering(struct cw1200_common *priv)
+{
+ int ret;
+ bool bssid_filtering = !priv->rx_filter.bssid;
+ bool is_p2p = priv->vif && priv->vif->p2p;
+ bool is_sta = priv->vif && NL80211_IFTYPE_STATION == priv->vif->type;
+
+ static struct wsm_beacon_filter_control bf_ctrl;
+ static struct wsm_mib_beacon_filter_table bf_tbl = {
+ .entry[0].ie_id = WLAN_EID_VENDOR_SPECIFIC,
+ .entry[0].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED |
+ WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT |
+ WSM_BEACON_FILTER_IE_HAS_APPEARED,
+ .entry[0].oui[0] = 0x50,
+ .entry[0].oui[1] = 0x6F,
+ .entry[0].oui[2] = 0x9A,
+ .entry[1].ie_id = WLAN_EID_HT_OPERATION,
+ .entry[1].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED |
+ WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT |
+ WSM_BEACON_FILTER_IE_HAS_APPEARED,
+ .entry[2].ie_id = WLAN_EID_ERP_INFO,
+ .entry[2].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED |
+ WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT |
+ WSM_BEACON_FILTER_IE_HAS_APPEARED,
+ };
+
+ if (priv->join_status == CW1200_JOIN_STATUS_PASSIVE)
+ return;
+ else if (priv->join_status == CW1200_JOIN_STATUS_MONITOR)
+ bssid_filtering = false;
+
+ if (priv->disable_beacon_filter) {
+ bf_ctrl.enabled = 0;
+ bf_ctrl.bcn_count = 1;
+ bf_tbl.num = __cpu_to_le32(0);
+ } else if (is_p2p || !is_sta) {
+ bf_ctrl.enabled = WSM_BEACON_FILTER_ENABLE |
+ WSM_BEACON_FILTER_AUTO_ERP;
+ bf_ctrl.bcn_count = 0;
+ bf_tbl.num = __cpu_to_le32(2);
+ } else {
+ bf_ctrl.enabled = WSM_BEACON_FILTER_ENABLE;
+ bf_ctrl.bcn_count = 0;
+ bf_tbl.num = __cpu_to_le32(3);
+ }
+
+ /* When acting as p2p client being connected to p2p GO, in order to
+ * receive frames from a different p2p device, turn off bssid filter.
+ *
+ * WARNING: FW dependency!
+ * This can only be used with FW WSM371 and its successors.
+ * In that FW version even with bssid filter turned off,
+ * device will block most of the unwanted frames.
+ */
+ if (is_p2p)
+ bssid_filtering = false;
+
+ ret = wsm_set_rx_filter(priv, &priv->rx_filter);
+ if (!ret)
+ ret = wsm_set_beacon_filter_table(priv, &bf_tbl);
+ if (!ret)
+ ret = wsm_beacon_filter_control(priv, &bf_ctrl);
+ if (!ret)
+ ret = wsm_set_bssid_filtering(priv, bssid_filtering);
+ if (!ret)
+ ret = wsm_set_multicast_filter(priv, &priv->multicast_filter);
+ if (ret)
+ wiphy_err(priv->hw->wiphy,
+ "Update filtering failed: %d.\n", ret);
+ return;
+}
+
+void cw1200_update_filtering_work(struct work_struct *work)
+{
+ struct cw1200_common *priv =
+ container_of(work, struct cw1200_common,
+ update_filtering_work);
+
+ cw1200_update_filtering(priv);
+}
+
+void cw1200_set_beacon_wakeup_period_work(struct work_struct *work)
+{
+ struct cw1200_common *priv =
+ container_of(work, struct cw1200_common,
+ set_beacon_wakeup_period_work);
+
+ wsm_set_beacon_wakeup_period(priv,
+ priv->beacon_int * priv->join_dtim_period >
+ MAX_BEACON_SKIP_TIME_MS ? 1 :
+ priv->join_dtim_period, 0);
+}
+
+u64 cw1200_prepare_multicast(struct ieee80211_hw *hw,
+ struct netdev_hw_addr_list *mc_list)
+{
+ static u8 broadcast_ipv6[ETH_ALEN] = {
+ 0x33, 0x33, 0x00, 0x00, 0x00, 0x01
+ };
+ static u8 broadcast_ipv4[ETH_ALEN] = {
+ 0x01, 0x00, 0x5e, 0x00, 0x00, 0x01
+ };
+ struct cw1200_common *priv = hw->priv;
+ struct netdev_hw_addr *ha;
+ int count = 0;
+
+ /* Disable multicast filtering */
+ priv->has_multicast_subscription = false;
+ memset(&priv->multicast_filter, 0x00, sizeof(priv->multicast_filter));
+
+ if (netdev_hw_addr_list_count(mc_list) > WSM_MAX_GRP_ADDRTABLE_ENTRIES)
+ return 0;
+
+ /* Enable if requested */
+ netdev_hw_addr_list_for_each(ha, mc_list) {
+ pr_debug("[STA] multicast: %pM\n", ha->addr);
+ memcpy(&priv->multicast_filter.macaddrs[count],
+ ha->addr, ETH_ALEN);
+ if (!ether_addr_equal(ha->addr, broadcast_ipv4) &&
+ !ether_addr_equal(ha->addr, broadcast_ipv6))
+ priv->has_multicast_subscription = true;
+ count++;
+ }
+
+ if (count) {
+ priv->multicast_filter.enable = __cpu_to_le32(1);
+ priv->multicast_filter.num_addrs = __cpu_to_le32(count);
+ }
+
+ return netdev_hw_addr_list_count(mc_list);
+}
+
+void cw1200_configure_filter(struct ieee80211_hw *dev,
+ unsigned int changed_flags,
+ unsigned int *total_flags,
+ u64 multicast)
+{
+ struct cw1200_common *priv = dev->priv;
+ bool listening = !!(*total_flags &
+ (FIF_PROMISC_IN_BSS |
+ FIF_OTHER_BSS |
+ FIF_BCN_PRBRESP_PROMISC |
+ FIF_PROBE_REQ));
+
+ *total_flags &= FIF_PROMISC_IN_BSS |
+ FIF_OTHER_BSS |
+ FIF_FCSFAIL |
+ FIF_BCN_PRBRESP_PROMISC |
+ FIF_PROBE_REQ;
+
+ down(&priv->scan.lock);
+ mutex_lock(&priv->conf_mutex);
+
+ priv->rx_filter.promiscuous = (*total_flags & FIF_PROMISC_IN_BSS)
+ ? 1 : 0;
+ priv->rx_filter.bssid = (*total_flags & (FIF_OTHER_BSS |
+ FIF_PROBE_REQ)) ? 1 : 0;
+ priv->rx_filter.fcs = (*total_flags & FIF_FCSFAIL) ? 1 : 0;
+ priv->disable_beacon_filter = !(*total_flags &
+ (FIF_BCN_PRBRESP_PROMISC |
+ FIF_PROMISC_IN_BSS |
+ FIF_PROBE_REQ));
+ if (priv->listening != listening) {
+ priv->listening = listening;
+ wsm_lock_tx(priv);
+ cw1200_update_listening(priv, listening);
+ wsm_unlock_tx(priv);
+ }
+ cw1200_update_filtering(priv);
+ mutex_unlock(&priv->conf_mutex);
+ up(&priv->scan.lock);
+}
+
+int cw1200_conf_tx(struct ieee80211_hw *dev, struct ieee80211_vif *vif,
+ u16 queue, const struct ieee80211_tx_queue_params *params)
+{
+ struct cw1200_common *priv = dev->priv;
+ int ret = 0;
+ /* To prevent re-applying PM request OID again and again*/
+ bool old_uapsd_flags;
+
+ mutex_lock(&priv->conf_mutex);
+
+ if (queue < dev->queues) {
+ old_uapsd_flags = le16_to_cpu(priv->uapsd_info.uapsd_flags);
+
+ WSM_TX_QUEUE_SET(&priv->tx_queue_params, queue, 0, 0, 0);
+ ret = wsm_set_tx_queue_params(priv,
+ &priv->tx_queue_params.params[queue], queue);
+ if (ret) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ WSM_EDCA_SET(&priv->edca, queue, params->aifs,
+ params->cw_min, params->cw_max,
+ params->txop, 0xc8,
+ params->uapsd);
+ ret = wsm_set_edca_params(priv, &priv->edca);
+ if (ret) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (priv->mode == NL80211_IFTYPE_STATION) {
+ ret = cw1200_set_uapsd_param(priv, &priv->edca);
+ if (!ret && priv->setbssparams_done &&
+ (priv->join_status == CW1200_JOIN_STATUS_STA) &&
+ (old_uapsd_flags != le16_to_cpu(priv->uapsd_info.uapsd_flags)))
+ ret = cw1200_set_pm(priv, &priv->powersave_mode);
+ }
+ } else {
+ ret = -EINVAL;
+ }
+
+out:
+ mutex_unlock(&priv->conf_mutex);
+ return ret;
+}
+
+int cw1200_get_stats(struct ieee80211_hw *dev,
+ struct ieee80211_low_level_stats *stats)
+{
+ struct cw1200_common *priv = dev->priv;
+
+ memcpy(stats, &priv->stats, sizeof(*stats));
+ return 0;
+}
+
+int cw1200_set_pm(struct cw1200_common *priv, const struct wsm_set_pm *arg)
+{
+ struct wsm_set_pm pm = *arg;
+
+ if (priv->uapsd_info.uapsd_flags != 0)
+ pm.mode &= ~WSM_PSM_FAST_PS_FLAG;
+
+ if (memcmp(&pm, &priv->firmware_ps_mode,
+ sizeof(struct wsm_set_pm))) {
+ priv->firmware_ps_mode = pm;
+ return wsm_set_pm(priv, &pm);
+ } else {
+ return 0;
+ }
+}
+
+int cw1200_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd,
+ struct ieee80211_vif *vif, struct ieee80211_sta *sta,
+ struct ieee80211_key_conf *key)
+{
+ int ret = -EOPNOTSUPP;
+ struct cw1200_common *priv = dev->priv;
+ struct ieee80211_key_seq seq;
+
+ mutex_lock(&priv->conf_mutex);
+
+ if (cmd == SET_KEY) {
+ u8 *peer_addr = NULL;
+ int pairwise = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) ?
+ 1 : 0;
+ int idx = cw1200_alloc_key(priv);
+ struct wsm_add_key *wsm_key = &priv->keys[idx];
+
+ if (idx < 0) {
+ ret = -EINVAL;
+ goto finally;
+ }
+
+ if (sta)
+ peer_addr = sta->addr;
+
+ key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE |
+ IEEE80211_KEY_FLAG_RESERVE_TAILROOM;
+
+ switch (key->cipher) {
+ case WLAN_CIPHER_SUITE_WEP40:
+ case WLAN_CIPHER_SUITE_WEP104:
+ if (key->keylen > 16) {
+ cw1200_free_key(priv, idx);
+ ret = -EINVAL;
+ goto finally;
+ }
+
+ if (pairwise) {
+ wsm_key->type = WSM_KEY_TYPE_WEP_PAIRWISE;
+ memcpy(wsm_key->wep_pairwise.peer,
+ peer_addr, ETH_ALEN);
+ memcpy(wsm_key->wep_pairwise.keydata,
+ &key->key[0], key->keylen);
+ wsm_key->wep_pairwise.keylen = key->keylen;
+ } else {
+ wsm_key->type = WSM_KEY_TYPE_WEP_DEFAULT;
+ memcpy(wsm_key->wep_group.keydata,
+ &key->key[0], key->keylen);
+ wsm_key->wep_group.keylen = key->keylen;
+ wsm_key->wep_group.keyid = key->keyidx;
+ }
+ break;
+ case WLAN_CIPHER_SUITE_TKIP:
+ ieee80211_get_key_rx_seq(key, 0, &seq);
+ if (pairwise) {
+ wsm_key->type = WSM_KEY_TYPE_TKIP_PAIRWISE;
+ memcpy(wsm_key->tkip_pairwise.peer,
+ peer_addr, ETH_ALEN);
+ memcpy(wsm_key->tkip_pairwise.keydata,
+ &key->key[0], 16);
+ memcpy(wsm_key->tkip_pairwise.tx_mic_key,
+ &key->key[16], 8);
+ memcpy(wsm_key->tkip_pairwise.rx_mic_key,
+ &key->key[24], 8);
+ } else {
+ size_t mic_offset =
+ (priv->mode == NL80211_IFTYPE_AP) ?
+ 16 : 24;
+ wsm_key->type = WSM_KEY_TYPE_TKIP_GROUP;
+ memcpy(wsm_key->tkip_group.keydata,
+ &key->key[0], 16);
+ memcpy(wsm_key->tkip_group.rx_mic_key,
+ &key->key[mic_offset], 8);
+
+ wsm_key->tkip_group.rx_seqnum[0] = seq.tkip.iv16 & 0xff;
+ wsm_key->tkip_group.rx_seqnum[1] = (seq.tkip.iv16 >> 8) & 0xff;
+ wsm_key->tkip_group.rx_seqnum[2] = seq.tkip.iv32 & 0xff;
+ wsm_key->tkip_group.rx_seqnum[3] = (seq.tkip.iv32 >> 8) & 0xff;
+ wsm_key->tkip_group.rx_seqnum[4] = (seq.tkip.iv32 >> 16) & 0xff;
+ wsm_key->tkip_group.rx_seqnum[5] = (seq.tkip.iv32 >> 24) & 0xff;
+ wsm_key->tkip_group.rx_seqnum[6] = 0;
+ wsm_key->tkip_group.rx_seqnum[7] = 0;
+
+ wsm_key->tkip_group.keyid = key->keyidx;
+ }
+ break;
+ case WLAN_CIPHER_SUITE_CCMP:
+ ieee80211_get_key_rx_seq(key, 0, &seq);
+ if (pairwise) {
+ wsm_key->type = WSM_KEY_TYPE_AES_PAIRWISE;
+ memcpy(wsm_key->aes_pairwise.peer,
+ peer_addr, ETH_ALEN);
+ memcpy(wsm_key->aes_pairwise.keydata,
+ &key->key[0], 16);
+ } else {
+ wsm_key->type = WSM_KEY_TYPE_AES_GROUP;
+ memcpy(wsm_key->aes_group.keydata,
+ &key->key[0], 16);
+
+ wsm_key->aes_group.rx_seqnum[0] = seq.ccmp.pn[5];
+ wsm_key->aes_group.rx_seqnum[1] = seq.ccmp.pn[4];
+ wsm_key->aes_group.rx_seqnum[2] = seq.ccmp.pn[3];
+ wsm_key->aes_group.rx_seqnum[3] = seq.ccmp.pn[2];
+ wsm_key->aes_group.rx_seqnum[4] = seq.ccmp.pn[1];
+ wsm_key->aes_group.rx_seqnum[5] = seq.ccmp.pn[0];
+ wsm_key->aes_group.rx_seqnum[6] = 0;
+ wsm_key->aes_group.rx_seqnum[7] = 0;
+ wsm_key->aes_group.keyid = key->keyidx;
+ }
+ break;
+ case WLAN_CIPHER_SUITE_SMS4:
+ if (pairwise) {
+ wsm_key->type = WSM_KEY_TYPE_WAPI_PAIRWISE;
+ memcpy(wsm_key->wapi_pairwise.peer,
+ peer_addr, ETH_ALEN);
+ memcpy(wsm_key->wapi_pairwise.keydata,
+ &key->key[0], 16);
+ memcpy(wsm_key->wapi_pairwise.mic_key,
+ &key->key[16], 16);
+ wsm_key->wapi_pairwise.keyid = key->keyidx;
+ } else {
+ wsm_key->type = WSM_KEY_TYPE_WAPI_GROUP;
+ memcpy(wsm_key->wapi_group.keydata,
+ &key->key[0], 16);
+ memcpy(wsm_key->wapi_group.mic_key,
+ &key->key[16], 16);
+ wsm_key->wapi_group.keyid = key->keyidx;
+ }
+ break;
+ default:
+ pr_warn("Unhandled key type %d\n", key->cipher);
+ cw1200_free_key(priv, idx);
+ ret = -EOPNOTSUPP;
+ goto finally;
+ }
+ ret = wsm_add_key(priv, wsm_key);
+ if (!ret)
+ key->hw_key_idx = idx;
+ else
+ cw1200_free_key(priv, idx);
+ } else if (cmd == DISABLE_KEY) {
+ struct wsm_remove_key wsm_key = {
+ .index = key->hw_key_idx,
+ };
+
+ if (wsm_key.index > WSM_KEY_MAX_INDEX) {
+ ret = -EINVAL;
+ goto finally;
+ }
+
+ cw1200_free_key(priv, wsm_key.index);
+ ret = wsm_remove_key(priv, &wsm_key);
+ } else {
+ pr_warn("Unhandled key command %d\n", cmd);
+ }
+
+finally:
+ mutex_unlock(&priv->conf_mutex);
+ return ret;
+}
+
+void cw1200_wep_key_work(struct work_struct *work)
+{
+ struct cw1200_common *priv =
+ container_of(work, struct cw1200_common, wep_key_work);
+ u8 queue_id = cw1200_queue_get_queue_id(priv->pending_frame_id);
+ struct cw1200_queue *queue = &priv->tx_queue[queue_id];
+ __le32 wep_default_key_id = __cpu_to_le32(
+ priv->wep_default_key_id);
+
+ pr_debug("[STA] Setting default WEP key: %d\n",
+ priv->wep_default_key_id);
+ wsm_flush_tx(priv);
+ wsm_write_mib(priv, WSM_MIB_ID_DOT11_WEP_DEFAULT_KEY_ID,
+ &wep_default_key_id, sizeof(wep_default_key_id));
+ cw1200_queue_requeue(queue, priv->pending_frame_id);
+ wsm_unlock_tx(priv);
+}
+
+int cw1200_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
+{
+ int ret = 0;
+ __le32 val32;
+ struct cw1200_common *priv = hw->priv;
+
+ if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
+ return 0;
+
+ if (value != (u32) -1)
+ val32 = __cpu_to_le32(value);
+ else
+ val32 = 0; /* disabled */
+
+ if (priv->mode == NL80211_IFTYPE_UNSPECIFIED) {
+ /* device is down, can _not_ set threshold */
+ ret = -ENODEV;
+ goto out;
+ }
+
+ if (priv->rts_threshold == value)
+ goto out;
+
+ pr_debug("[STA] Setting RTS threshold: %d\n",
+ priv->rts_threshold);
+
+ /* mutex_lock(&priv->conf_mutex); */
+ ret = wsm_write_mib(priv, WSM_MIB_ID_DOT11_RTS_THRESHOLD,
+ &val32, sizeof(val32));
+ if (!ret)
+ priv->rts_threshold = value;
+ /* mutex_unlock(&priv->conf_mutex); */
+
+out:
+ return ret;
+}
+
+/* If successful, LOCKS the TX queue! */
+static int __cw1200_flush(struct cw1200_common *priv, bool drop)
+{
+ int i, ret;
+
+ for (;;) {
+ /* TODO: correct flush handling is required when dev_stop.
+ * Temporary workaround: 2s
+ */
+ if (drop) {
+ for (i = 0; i < 4; ++i)
+ cw1200_queue_clear(&priv->tx_queue[i]);
+ } else {
+ ret = wait_event_timeout(
+ priv->tx_queue_stats.wait_link_id_empty,
+ cw1200_queue_stats_is_empty(
+ &priv->tx_queue_stats, -1),
+ 2 * HZ);
+ }
+
+ if (!drop && ret <= 0) {
+ ret = -ETIMEDOUT;
+ break;
+ } else {
+ ret = 0;
+ }
+
+ wsm_lock_tx(priv);
+ if (!cw1200_queue_stats_is_empty(&priv->tx_queue_stats, -1)) {
+ /* Highly unlikely: WSM requeued frames. */
+ wsm_unlock_tx(priv);
+ continue;
+ }
+ break;
+ }
+ return ret;
+}
+
+void cw1200_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ u32 queues, bool drop)
+{
+ struct cw1200_common *priv = hw->priv;
+
+ switch (priv->mode) {
+ case NL80211_IFTYPE_MONITOR:
+ drop = true;
+ break;
+ case NL80211_IFTYPE_AP:
+ if (!priv->enable_beacon)
+ drop = true;
+ break;
+ }
+
+ if (!__cw1200_flush(priv, drop))
+ wsm_unlock_tx(priv);
+
+ return;
+}
+
+/* ******************************************************************** */
+/* WSM callbacks */
+
+void cw1200_free_event_queue(struct cw1200_common *priv)
+{
+ LIST_HEAD(list);
+
+ spin_lock(&priv->event_queue_lock);
+ list_splice_init(&priv->event_queue, &list);
+ spin_unlock(&priv->event_queue_lock);
+
+ __cw1200_free_event_queue(&list);
+}
+
+void cw1200_event_handler(struct work_struct *work)
+{
+ struct cw1200_common *priv =
+ container_of(work, struct cw1200_common, event_handler);
+ struct cw1200_wsm_event *event;
+ LIST_HEAD(list);
+
+ spin_lock(&priv->event_queue_lock);
+ list_splice_init(&priv->event_queue, &list);
+ spin_unlock(&priv->event_queue_lock);
+
+ list_for_each_entry(event, &list, link) {
+ switch (event->evt.id) {
+ case WSM_EVENT_ERROR:
+ pr_err("Unhandled WSM Error from LMAC\n");
+ break;
+ case WSM_EVENT_BSS_LOST:
+ pr_debug("[CQM] BSS lost.\n");
+ cancel_work_sync(&priv->unjoin_work);
+ if (!down_trylock(&priv->scan.lock)) {
+ cw1200_cqm_bssloss_sm(priv, 1, 0, 0);
+ up(&priv->scan.lock);
+ } else {
+ /* Scan is in progress. Delay reporting.
+ * Scan complete will trigger bss_loss_work
+ */
+ priv->delayed_link_loss = 1;
+ /* Also start a watchdog. */
+ queue_delayed_work(priv->workqueue,
+ &priv->bss_loss_work, 5*HZ);
+ }
+ break;
+ case WSM_EVENT_BSS_REGAINED:
+ pr_debug("[CQM] BSS regained.\n");
+ cw1200_cqm_bssloss_sm(priv, 0, 0, 0);
+ cancel_work_sync(&priv->unjoin_work);
+ break;
+ case WSM_EVENT_RADAR_DETECTED:
+ wiphy_info(priv->hw->wiphy, "radar pulse detected\n");
+ break;
+ case WSM_EVENT_RCPI_RSSI:
+ {
+ /* RSSI: signed Q8.0, RCPI: unsigned Q7.1
+ * RSSI = RCPI / 2 - 110
+ */
+ int rcpi_rssi = (int)(event->evt.data & 0xFF);
+ int cqm_evt;
+ if (priv->cqm_use_rssi)
+ rcpi_rssi = (s8)rcpi_rssi;
+ else
+ rcpi_rssi = rcpi_rssi / 2 - 110;
+
+ cqm_evt = (rcpi_rssi <= priv->cqm_rssi_thold) ?
+ NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW :
+ NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
+ pr_debug("[CQM] RSSI event: %d.\n", rcpi_rssi);
+ ieee80211_cqm_rssi_notify(priv->vif, cqm_evt,
+ GFP_KERNEL);
+ break;
+ }
+ case WSM_EVENT_BT_INACTIVE:
+ pr_warn("Unhandled BT INACTIVE from LMAC\n");
+ break;
+ case WSM_EVENT_BT_ACTIVE:
+ pr_warn("Unhandled BT ACTIVE from LMAC\n");
+ break;
+ }
+ }
+ __cw1200_free_event_queue(&list);
+}
+
+void cw1200_bss_loss_work(struct work_struct *work)
+{
+ struct cw1200_common *priv =
+ container_of(work, struct cw1200_common, bss_loss_work.work);
+
+ pr_debug("[CQM] Reporting connection loss.\n");
+ wsm_lock_tx(priv);
+ if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0)
+ wsm_unlock_tx(priv);
+}
+
+void cw1200_bss_params_work(struct work_struct *work)
+{
+ struct cw1200_common *priv =
+ container_of(work, struct cw1200_common, bss_params_work);
+ mutex_lock(&priv->conf_mutex);
+
+ priv->bss_params.reset_beacon_loss = 1;
+ wsm_set_bss_params(priv, &priv->bss_params);
+ priv->bss_params.reset_beacon_loss = 0;
+
+ mutex_unlock(&priv->conf_mutex);
+}
+
+/* ******************************************************************** */
+/* Internal API */
+
+/* This function is called to Parse the SDD file
+ * to extract listen_interval and PTA related information
+ * sdd is a TLV: u8 id, u8 len, u8 data[]
+ */
+static int cw1200_parse_sdd_file(struct cw1200_common *priv)
+{
+ const u8 *p = priv->sdd->data;
+ int ret = 0;
+
+ while (p + 2 <= priv->sdd->data + priv->sdd->size) {
+ if (p + p[1] + 2 > priv->sdd->data + priv->sdd->size) {
+ pr_warn("Malformed sdd structure\n");
+ return -1;
+ }
+ switch (p[0]) {
+ case SDD_PTA_CFG_ELT_ID: {
+ u16 v;
+ if (p[1] < 4) {
+ pr_warn("SDD_PTA_CFG_ELT_ID malformed\n");
+ ret = -1;
+ break;
+ }
+ v = le16_to_cpu(*((__le16 *)(p + 2)));
+ if (!v) /* non-zero means this is enabled */
+ break;
+
+ v = le16_to_cpu(*((__le16 *)(p + 4)));
+ priv->conf_listen_interval = (v >> 7) & 0x1F;
+ pr_debug("PTA found; Listen Interval %d\n",
+ priv->conf_listen_interval);
+ break;
+ }
+ case SDD_REFERENCE_FREQUENCY_ELT_ID: {
+ u16 clk = le16_to_cpu(*((__le16 *)(p + 2)));
+ if (clk != priv->hw_refclk)
+ pr_warn("SDD file doesn't match configured refclk (%d vs %d)\n",
+ clk, priv->hw_refclk);
+ break;
+ }
+ default:
+ break;
+ }
+ p += p[1] + 2;
+ }
+
+ if (!priv->bt_present) {
+ pr_debug("PTA element NOT found.\n");
+ priv->conf_listen_interval = 0;
+ }
+ return ret;
+}
+
+int cw1200_setup_mac(struct cw1200_common *priv)
+{
+ int ret = 0;
+
+ /* NOTE: There is a bug in FW: it reports signal
+ * as RSSI if RSSI subscription is enabled.
+ * It's not enough to set WSM_RCPI_RSSI_USE_RSSI.
+ *
+ * NOTE2: RSSI based reports have been switched to RCPI, since
+ * FW has a bug and RSSI reported values are not stable,
+ * what can leads to signal level oscilations in user-end applications
+ */
+ struct wsm_rcpi_rssi_threshold threshold = {
+ .rssiRcpiMode = WSM_RCPI_RSSI_THRESHOLD_ENABLE |
+ WSM_RCPI_RSSI_DONT_USE_UPPER |
+ WSM_RCPI_RSSI_DONT_USE_LOWER,
+ .rollingAverageCount = 16,
+ };
+
+ struct wsm_configuration cfg = {
+ .dot11StationId = &priv->mac_addr[0],
+ };
+
+ /* Remember the decission here to make sure, we will handle
+ * the RCPI/RSSI value correctly on WSM_EVENT_RCPI_RSS
+ */
+ if (threshold.rssiRcpiMode & WSM_RCPI_RSSI_USE_RSSI)
+ priv->cqm_use_rssi = true;
+
+ if (!priv->sdd) {
+ ret = request_firmware(&priv->sdd, priv->sdd_path, priv->pdev);
+ if (ret) {
+ pr_err("Can't load sdd file %s.\n", priv->sdd_path);
+ return ret;
+ }
+ cw1200_parse_sdd_file(priv);
+ }
+
+ cfg.dpdData = priv->sdd->data;
+ cfg.dpdData_size = priv->sdd->size;
+ ret = wsm_configuration(priv, &cfg);
+ if (ret)
+ return ret;
+
+ /* Configure RSSI/SCPI reporting as RSSI. */
+ wsm_set_rcpi_rssi_threshold(priv, &threshold);
+
+ return 0;
+}
+
+static void cw1200_join_complete(struct cw1200_common *priv)
+{
+ pr_debug("[STA] Join complete (%d)\n", priv->join_complete_status);
+
+ priv->join_pending = false;
+ if (priv->join_complete_status) {
+ priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
+ cw1200_update_listening(priv, priv->listening);
+ cw1200_do_unjoin(priv);
+ ieee80211_connection_loss(priv->vif);
+ } else {
+ if (priv->mode == NL80211_IFTYPE_ADHOC)
+ priv->join_status = CW1200_JOIN_STATUS_IBSS;
+ else
+ priv->join_status = CW1200_JOIN_STATUS_PRE_STA;
+ }
+ wsm_unlock_tx(priv); /* Clearing the lock held before do_join() */
+}
+
+void cw1200_join_complete_work(struct work_struct *work)
+{
+ struct cw1200_common *priv =
+ container_of(work, struct cw1200_common, join_complete_work);
+ mutex_lock(&priv->conf_mutex);
+ cw1200_join_complete(priv);
+ mutex_unlock(&priv->conf_mutex);
+}
+
+void cw1200_join_complete_cb(struct cw1200_common *priv,
+ struct wsm_join_complete *arg)
+{
+ pr_debug("[STA] cw1200_join_complete_cb called, status=%d.\n",
+ arg->status);
+
+ if (cancel_delayed_work(&priv->join_timeout)) {
+ priv->join_complete_status = arg->status;
+ queue_work(priv->workqueue, &priv->join_complete_work);
+ }
+}
+
+/* MUST be called with tx_lock held! It will be unlocked for us. */
+static void cw1200_do_join(struct cw1200_common *priv)
+{
+ const u8 *bssid;
+ struct ieee80211_bss_conf *conf = &priv->vif->bss_conf;
+ struct cfg80211_bss *bss = NULL;
+ struct wsm_protected_mgmt_policy mgmt_policy;
+ struct wsm_join join = {
+ .mode = conf->ibss_joined ?
+ WSM_JOIN_MODE_IBSS : WSM_JOIN_MODE_BSS,
+ .preamble_type = WSM_JOIN_PREAMBLE_LONG,
+ .probe_for_join = 1,
+ .atim_window = 0,
+ .basic_rate_set = cw1200_rate_mask_to_wsm(priv,
+ conf->basic_rates),
+ };
+ if (delayed_work_pending(&priv->join_timeout)) {
+ pr_warn("[STA] - Join request already pending, skipping..\n");
+ wsm_unlock_tx(priv);
+ return;
+ }
+
+ if (priv->join_status)
+ cw1200_do_unjoin(priv);
+
+ bssid = priv->vif->bss_conf.bssid;
+
+ bss = cfg80211_get_bss(priv->hw->wiphy, priv->channel, bssid, NULL, 0,
+ IEEE80211_BSS_TYPE_ANY, IEEE80211_PRIVACY_ANY);
+
+ if (!bss && !conf->ibss_joined) {
+ wsm_unlock_tx(priv);
+ return;
+ }
+
+ mutex_lock(&priv->conf_mutex);
+
+ /* Under the conf lock: check scan status and
+ * bail out if it is in progress.
+ */
+ if (atomic_read(&priv->scan.in_progress)) {
+ wsm_unlock_tx(priv);
+ goto done_put;
+ }
+
+ priv->join_pending = true;
+
+ /* Sanity check basic rates */
+ if (!join.basic_rate_set)
+ join.basic_rate_set = 7;
+
+ /* Sanity check beacon interval */
+ if (!priv->beacon_int)
+ priv->beacon_int = 1;
+
+ join.beacon_interval = priv->beacon_int;
+
+ /* BT Coex related changes */
+ if (priv->bt_present) {
+ if (((priv->conf_listen_interval * 100) %
+ priv->beacon_int) == 0)
+ priv->listen_interval =
+ ((priv->conf_listen_interval * 100) /
+ priv->beacon_int);
+ else
+ priv->listen_interval =
+ ((priv->conf_listen_interval * 100) /
+ priv->beacon_int + 1);
+ }
+
+ if (priv->hw->conf.ps_dtim_period)
+ priv->join_dtim_period = priv->hw->conf.ps_dtim_period;
+ join.dtim_period = priv->join_dtim_period;
+
+ join.channel_number = priv->channel->hw_value;
+ join.band = (priv->channel->band == IEEE80211_BAND_5GHZ) ?
+ WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G;
+
+ memcpy(join.bssid, bssid, sizeof(join.bssid));
+
+ pr_debug("[STA] Join BSSID: %pM DTIM: %d, interval: %d\n",
+ join.bssid,
+ join.dtim_period, priv->beacon_int);
+
+ if (!conf->ibss_joined) {
+ const u8 *ssidie;
+ rcu_read_lock();
+ ssidie = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
+ if (ssidie) {
+ join.ssid_len = ssidie[1];
+ memcpy(join.ssid, &ssidie[2], join.ssid_len);
+ }
+ rcu_read_unlock();
+ }
+
+ if (priv->vif->p2p) {
+ join.flags |= WSM_JOIN_FLAGS_P2P_GO;
+ join.basic_rate_set =
+ cw1200_rate_mask_to_wsm(priv, 0xFF0);
+ }
+
+ /* Enable asynchronous join calls */
+ if (!conf->ibss_joined) {
+ join.flags |= WSM_JOIN_FLAGS_FORCE;
+ join.flags |= WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND;
+ }
+
+ wsm_flush_tx(priv);
+
+ /* Stay Awake for Join and Auth Timeouts and a bit more */
+ cw1200_pm_stay_awake(&priv->pm_state,
+ CW1200_JOIN_TIMEOUT + CW1200_AUTH_TIMEOUT);
+
+ cw1200_update_listening(priv, false);
+
+ /* Turn on Block ACKs */
+ wsm_set_block_ack_policy(priv, priv->ba_tx_tid_mask,
+ priv->ba_rx_tid_mask);
+
+ /* Set up timeout */
+ if (join.flags & WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND) {
+ priv->join_status = CW1200_JOIN_STATUS_JOINING;
+ queue_delayed_work(priv->workqueue,
+ &priv->join_timeout,
+ CW1200_JOIN_TIMEOUT);
+ }
+
+ /* 802.11w protected mgmt frames */
+ mgmt_policy.protectedMgmtEnable = 0;
+ mgmt_policy.unprotectedMgmtFramesAllowed = 1;
+ mgmt_policy.encryptionForAuthFrame = 1;
+ wsm_set_protected_mgmt_policy(priv, &mgmt_policy);
+
+ /* Perform actual join */
+ if (wsm_join(priv, &join)) {
+ pr_err("[STA] cw1200_join_work: wsm_join failed!\n");
+ cancel_delayed_work_sync(&priv->join_timeout);
+ cw1200_update_listening(priv, priv->listening);
+ /* Tx lock still held, unjoin will clear it. */
+ if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0)
+ wsm_unlock_tx(priv);
+ } else {
+ if (!(join.flags & WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND))
+ cw1200_join_complete(priv); /* Will clear tx_lock */
+
+ /* Upload keys */
+ cw1200_upload_keys(priv);
+
+ /* Due to beacon filtering it is possible that the
+ * AP's beacon is not known for the mac80211 stack.
+ * Disable filtering temporary to make sure the stack
+ * receives at least one
+ */
+ priv->disable_beacon_filter = true;
+ }
+ cw1200_update_filtering(priv);
+
+done_put:
+ mutex_unlock(&priv->conf_mutex);
+ if (bss)
+ cfg80211_put_bss(priv->hw->wiphy, bss);
+}
+
+void cw1200_join_timeout(struct work_struct *work)
+{
+ struct cw1200_common *priv =
+ container_of(work, struct cw1200_common, join_timeout.work);
+ pr_debug("[WSM] Join timed out.\n");
+ wsm_lock_tx(priv);
+ if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0)
+ wsm_unlock_tx(priv);
+}
+
+static void cw1200_do_unjoin(struct cw1200_common *priv)
+{
+ struct wsm_reset reset = {
+ .reset_statistics = true,
+ };
+
+ cancel_delayed_work_sync(&priv->join_timeout);
+
+ mutex_lock(&priv->conf_mutex);
+ priv->join_pending = false;
+
+ if (atomic_read(&priv->scan.in_progress)) {
+ if (priv->delayed_unjoin)
+ wiphy_dbg(priv->hw->wiphy, "Delayed unjoin is already scheduled.\n");
+ else
+ priv->delayed_unjoin = true;
+ goto done;
+ }
+
+ priv->delayed_link_loss = false;
+
+ if (!priv->join_status)
+ goto done;
+
+ if (priv->join_status == CW1200_JOIN_STATUS_AP)
+ goto done;
+
+ cancel_work_sync(&priv->update_filtering_work);
+ cancel_work_sync(&priv->set_beacon_wakeup_period_work);
+ priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
+
+ /* Unjoin is a reset. */
+ wsm_flush_tx(priv);
+ wsm_keep_alive_period(priv, 0);
+ wsm_reset(priv, &reset);
+ wsm_set_output_power(priv, priv->output_power * 10);
+ priv->join_dtim_period = 0;
+ cw1200_setup_mac(priv);
+ cw1200_free_event_queue(priv);
+ cancel_work_sync(&priv->event_handler);
+ cw1200_update_listening(priv, priv->listening);
+ cw1200_cqm_bssloss_sm(priv, 0, 0, 0);
+
+ /* Disable Block ACKs */
+ wsm_set_block_ack_policy(priv, 0, 0);
+
+ priv->disable_beacon_filter = false;
+ cw1200_update_filtering(priv);
+ memset(&priv->association_mode, 0,
+ sizeof(priv->association_mode));
+ memset(&priv->bss_params, 0, sizeof(priv->bss_params));
+ priv->setbssparams_done = false;
+ memset(&priv->firmware_ps_mode, 0,
+ sizeof(priv->firmware_ps_mode));
+
+ pr_debug("[STA] Unjoin completed.\n");
+
+done:
+ mutex_unlock(&priv->conf_mutex);
+}
+
+void cw1200_unjoin_work(struct work_struct *work)
+{
+ struct cw1200_common *priv =
+ container_of(work, struct cw1200_common, unjoin_work);
+
+ cw1200_do_unjoin(priv);
+
+ /* Tell the stack we're dead */
+ ieee80211_connection_loss(priv->vif);
+
+ wsm_unlock_tx(priv);
+}
+
+int cw1200_enable_listening(struct cw1200_common *priv)
+{
+ struct wsm_start start = {
+ .mode = WSM_START_MODE_P2P_DEV,
+ .band = WSM_PHY_BAND_2_4G,
+ .beacon_interval = 100,
+ .dtim_period = 1,
+ .probe_delay = 0,
+ .basic_rate_set = 0x0F,
+ };
+
+ if (priv->channel) {
+ start.band = priv->channel->band == IEEE80211_BAND_5GHZ ?
+ WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G;
+ start.channel_number = priv->channel->hw_value;
+ } else {
+ start.band = WSM_PHY_BAND_2_4G;
+ start.channel_number = 1;
+ }
+
+ return wsm_start(priv, &start);
+}
+
+int cw1200_disable_listening(struct cw1200_common *priv)
+{
+ int ret;
+ struct wsm_reset reset = {
+ .reset_statistics = true,
+ };
+ ret = wsm_reset(priv, &reset);
+ return ret;
+}
+
+void cw1200_update_listening(struct cw1200_common *priv, bool enabled)
+{
+ if (enabled) {
+ if (priv->join_status == CW1200_JOIN_STATUS_PASSIVE) {
+ if (!cw1200_enable_listening(priv))
+ priv->join_status = CW1200_JOIN_STATUS_MONITOR;
+ wsm_set_probe_responder(priv, true);
+ }
+ } else {
+ if (priv->join_status == CW1200_JOIN_STATUS_MONITOR) {
+ if (!cw1200_disable_listening(priv))
+ priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
+ wsm_set_probe_responder(priv, false);
+ }
+ }
+}
+
+int cw1200_set_uapsd_param(struct cw1200_common *priv,
+ const struct wsm_edca_params *arg)
+{
+ int ret;
+ u16 uapsd_flags = 0;
+
+ /* Here's the mapping AC [queue, bit]
+ * VO [0,3], VI [1, 2], BE [2, 1], BK [3, 0]
+ */
+
+ if (arg->uapsd_enable[0])
+ uapsd_flags |= 1 << 3;
+
+ if (arg->uapsd_enable[1])
+ uapsd_flags |= 1 << 2;
+
+ if (arg->uapsd_enable[2])
+ uapsd_flags |= 1 << 1;
+
+ if (arg->uapsd_enable[3])
+ uapsd_flags |= 1;
+
+ /* Currently pseudo U-APSD operation is not supported, so setting
+ * MinAutoTriggerInterval, MaxAutoTriggerInterval and
+ * AutoTriggerStep to 0
+ */
+
+ priv->uapsd_info.uapsd_flags = cpu_to_le16(uapsd_flags);
+ priv->uapsd_info.min_auto_trigger_interval = 0;
+ priv->uapsd_info.max_auto_trigger_interval = 0;
+ priv->uapsd_info.auto_trigger_step = 0;
+
+ ret = wsm_set_uapsd_info(priv, &priv->uapsd_info);
+ return ret;
+}
+
+/* ******************************************************************** */
+/* AP API */
+
+int cw1200_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta)
+{
+ struct cw1200_common *priv = hw->priv;
+ struct cw1200_sta_priv *sta_priv =
+ (struct cw1200_sta_priv *)&sta->drv_priv;
+ struct cw1200_link_entry *entry;
+ struct sk_buff *skb;
+
+ if (priv->mode != NL80211_IFTYPE_AP)
+ return 0;
+
+ sta_priv->link_id = cw1200_find_link_id(priv, sta->addr);
+ if (WARN_ON(!sta_priv->link_id)) {
+ wiphy_info(priv->hw->wiphy,
+ "[AP] No more link IDs available.\n");
+ return -ENOENT;
+ }
+
+ entry = &priv->link_id_db[sta_priv->link_id - 1];
+ spin_lock_bh(&priv->ps_state_lock);
+ if ((sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) ==
+ IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
+ priv->sta_asleep_mask |= BIT(sta_priv->link_id);
+ entry->status = CW1200_LINK_HARD;
+ while ((skb = skb_dequeue(&entry->rx_queue)))
+ ieee80211_rx_irqsafe(priv->hw, skb);
+ spin_unlock_bh(&priv->ps_state_lock);
+ return 0;
+}
+
+int cw1200_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta)
+{
+ struct cw1200_common *priv = hw->priv;
+ struct cw1200_sta_priv *sta_priv =
+ (struct cw1200_sta_priv *)&sta->drv_priv;
+ struct cw1200_link_entry *entry;
+
+ if (priv->mode != NL80211_IFTYPE_AP || !sta_priv->link_id)
+ return 0;
+
+ entry = &priv->link_id_db[sta_priv->link_id - 1];
+ spin_lock_bh(&priv->ps_state_lock);
+ entry->status = CW1200_LINK_RESERVE;
+ entry->timestamp = jiffies;
+ wsm_lock_tx_async(priv);
+ if (queue_work(priv->workqueue, &priv->link_id_work) <= 0)
+ wsm_unlock_tx(priv);
+ spin_unlock_bh(&priv->ps_state_lock);
+ flush_workqueue(priv->workqueue);
+ return 0;
+}
+
+static void __cw1200_sta_notify(struct ieee80211_hw *dev,
+ struct ieee80211_vif *vif,
+ enum sta_notify_cmd notify_cmd,
+ int link_id)
+{
+ struct cw1200_common *priv = dev->priv;
+ u32 bit, prev;
+
+ /* Zero link id means "for all link IDs" */
+ if (link_id)
+ bit = BIT(link_id);
+ else if (WARN_ON_ONCE(notify_cmd != STA_NOTIFY_AWAKE))
+ bit = 0;
+ else
+ bit = priv->link_id_map;
+ prev = priv->sta_asleep_mask & bit;
+
+ switch (notify_cmd) {
+ case STA_NOTIFY_SLEEP:
+ if (!prev) {
+ if (priv->buffered_multicasts &&
+ !priv->sta_asleep_mask)
+ queue_work(priv->workqueue,
+ &priv->multicast_start_work);
+ priv->sta_asleep_mask |= bit;
+ }
+ break;
+ case STA_NOTIFY_AWAKE:
+ if (prev) {
+ priv->sta_asleep_mask &= ~bit;
+ priv->pspoll_mask &= ~bit;
+ if (priv->tx_multicast && link_id &&
+ !priv->sta_asleep_mask)
+ queue_work(priv->workqueue,
+ &priv->multicast_stop_work);
+ cw1200_bh_wakeup(priv);
+ }
+ break;
+ }
+}
+
+void cw1200_sta_notify(struct ieee80211_hw *dev,
+ struct ieee80211_vif *vif,
+ enum sta_notify_cmd notify_cmd,
+ struct ieee80211_sta *sta)
+{
+ struct cw1200_common *priv = dev->priv;
+ struct cw1200_sta_priv *sta_priv =
+ (struct cw1200_sta_priv *)&sta->drv_priv;
+
+ spin_lock_bh(&priv->ps_state_lock);
+ __cw1200_sta_notify(dev, vif, notify_cmd, sta_priv->link_id);
+ spin_unlock_bh(&priv->ps_state_lock);
+}
+
+static void cw1200_ps_notify(struct cw1200_common *priv,
+ int link_id, bool ps)
+{
+ if (link_id > CW1200_MAX_STA_IN_AP_MODE)
+ return;
+
+ pr_debug("%s for LinkId: %d. STAs asleep: %.8X\n",
+ ps ? "Stop" : "Start",
+ link_id, priv->sta_asleep_mask);
+
+ __cw1200_sta_notify(priv->hw, priv->vif,
+ ps ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, link_id);
+}
+
+static int cw1200_set_tim_impl(struct cw1200_common *priv, bool aid0_bit_set)
+{
+ struct sk_buff *skb;
+ struct wsm_update_ie update_ie = {
+ .what = WSM_UPDATE_IE_BEACON,
+ .count = 1,
+ };
+ u16 tim_offset, tim_length;
+
+ pr_debug("[AP] mcast: %s.\n", aid0_bit_set ? "ena" : "dis");
+
+ skb = ieee80211_beacon_get_tim(priv->hw, priv->vif,
+ &tim_offset, &tim_length);
+ if (!skb) {
+ if (!__cw1200_flush(priv, true))
+ wsm_unlock_tx(priv);
+ return -ENOENT;
+ }
+
+ if (tim_offset && tim_length >= 6) {
+ /* Ignore DTIM count from mac80211:
+ * firmware handles DTIM internally.
+ */
+ skb->data[tim_offset + 2] = 0;
+
+ /* Set/reset aid0 bit */
+ if (aid0_bit_set)
+ skb->data[tim_offset + 4] |= 1;
+ else
+ skb->data[tim_offset + 4] &= ~1;
+ }
+
+ update_ie.ies = &skb->data[tim_offset];
+ update_ie.length = tim_length;
+ wsm_update_ie(priv, &update_ie);
+
+ dev_kfree_skb(skb);
+
+ return 0;
+}
+
+void cw1200_set_tim_work(struct work_struct *work)
+{
+ struct cw1200_common *priv =
+ container_of(work, struct cw1200_common, set_tim_work);
+ (void)cw1200_set_tim_impl(priv, priv->aid0_bit_set);
+}
+
+int cw1200_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta,
+ bool set)
+{
+ struct cw1200_common *priv = dev->priv;
+ queue_work(priv->workqueue, &priv->set_tim_work);
+ return 0;
+}
+
+void cw1200_set_cts_work(struct work_struct *work)
+{
+ struct cw1200_common *priv =
+ container_of(work, struct cw1200_common, set_cts_work);
+
+ u8 erp_ie[3] = {WLAN_EID_ERP_INFO, 0x1, 0};
+ struct wsm_update_ie update_ie = {
+ .what = WSM_UPDATE_IE_BEACON,
+ .count = 1,
+ .ies = erp_ie,
+ .length = 3,
+ };
+ u32 erp_info;
+ __le32 use_cts_prot;
+ mutex_lock(&priv->conf_mutex);
+ erp_info = priv->erp_info;
+ mutex_unlock(&priv->conf_mutex);
+ use_cts_prot =
+ erp_info & WLAN_ERP_USE_PROTECTION ?
+ __cpu_to_le32(1) : 0;
+
+ erp_ie[ERP_INFO_BYTE_OFFSET] = erp_info;
+
+ pr_debug("[STA] ERP information 0x%x\n", erp_info);
+
+ wsm_write_mib(priv, WSM_MIB_ID_NON_ERP_PROTECTION,
+ &use_cts_prot, sizeof(use_cts_prot));
+ wsm_update_ie(priv, &update_ie);
+
+ return;
+}
+
+static int cw1200_set_btcoexinfo(struct cw1200_common *priv)
+{
+ struct wsm_override_internal_txrate arg;
+ int ret = 0;
+
+ if (priv->mode == NL80211_IFTYPE_STATION) {
+ /* Plumb PSPOLL and NULL template */
+ cw1200_upload_pspoll(priv);
+ cw1200_upload_null(priv);
+ cw1200_upload_qosnull(priv);
+ } else {
+ return 0;
+ }
+
+ memset(&arg, 0, sizeof(struct wsm_override_internal_txrate));
+
+ if (!priv->vif->p2p) {
+ /* STATION mode */
+ if (priv->bss_params.operational_rate_set & ~0xF) {
+ pr_debug("[STA] STA has ERP rates\n");
+ /* G or BG mode */
+ arg.internalTxRate = (__ffs(
+ priv->bss_params.operational_rate_set & ~0xF));
+ } else {
+ pr_debug("[STA] STA has non ERP rates\n");
+ /* B only mode */
+ arg.internalTxRate = (__ffs(le32_to_cpu(priv->association_mode.basic_rate_set)));
+ }
+ arg.nonErpInternalTxRate = (__ffs(le32_to_cpu(priv->association_mode.basic_rate_set)));
+ } else {
+ /* P2P mode */
+ arg.internalTxRate = (__ffs(priv->bss_params.operational_rate_set & ~0xF));
+ arg.nonErpInternalTxRate = (__ffs(priv->bss_params.operational_rate_set & ~0xF));
+ }
+
+ pr_debug("[STA] BTCOEX_INFO MODE %d, internalTxRate : %x, nonErpInternalTxRate: %x\n",
+ priv->mode,
+ arg.internalTxRate,
+ arg.nonErpInternalTxRate);
+
+ ret = wsm_write_mib(priv, WSM_MIB_ID_OVERRIDE_INTERNAL_TX_RATE,
+ &arg, sizeof(arg));
+
+ return ret;
+}
+
+void cw1200_bss_info_changed(struct ieee80211_hw *dev,
+ struct ieee80211_vif *vif,
+ struct ieee80211_bss_conf *info,
+ u32 changed)
+{
+ struct cw1200_common *priv = dev->priv;
+ bool do_join = false;
+
+ mutex_lock(&priv->conf_mutex);
+
+ pr_debug("BSS CHANGED: %08x\n", changed);
+
+ /* TODO: BSS_CHANGED_QOS */
+ /* TODO: BSS_CHANGED_TXPOWER */
+
+ if (changed & BSS_CHANGED_ARP_FILTER) {
+ struct wsm_mib_arp_ipv4_filter filter = {0};
+ int i;
+
+ pr_debug("[STA] BSS_CHANGED_ARP_FILTER cnt: %d\n",
+ info->arp_addr_cnt);
+
+ /* Currently only one IP address is supported by firmware.
+ * In case of more IPs arp filtering will be disabled.
+ */
+ if (info->arp_addr_cnt > 0 &&
+ info->arp_addr_cnt <= WSM_MAX_ARP_IP_ADDRTABLE_ENTRIES) {
+ for (i = 0; i < info->arp_addr_cnt; i++) {
+ filter.ipv4addrs[i] = info->arp_addr_list[i];
+ pr_debug("[STA] addr[%d]: 0x%X\n",
+ i, filter.ipv4addrs[i]);
+ }
+ filter.enable = __cpu_to_le32(1);
+ }
+
+ pr_debug("[STA] arp ip filter enable: %d\n",
+ __le32_to_cpu(filter.enable));
+
+ wsm_set_arp_ipv4_filter(priv, &filter);
+ }
+
+ if (changed &
+ (BSS_CHANGED_BEACON |
+ BSS_CHANGED_AP_PROBE_RESP |
+ BSS_CHANGED_BSSID |
+ BSS_CHANGED_SSID |
+ BSS_CHANGED_IBSS)) {
+ pr_debug("BSS_CHANGED_BEACON\n");
+ priv->beacon_int = info->beacon_int;
+ cw1200_update_beaconing(priv);
+ cw1200_upload_beacon(priv);
+ }
+
+ if (changed & BSS_CHANGED_BEACON_ENABLED) {
+ pr_debug("BSS_CHANGED_BEACON_ENABLED (%d)\n", info->enable_beacon);
+
+ if (priv->enable_beacon != info->enable_beacon) {
+ cw1200_enable_beaconing(priv, info->enable_beacon);
+ priv->enable_beacon = info->enable_beacon;
+ }
+ }
+
+ if (changed & BSS_CHANGED_BEACON_INT) {
+ pr_debug("CHANGED_BEACON_INT\n");
+ if (info->ibss_joined)
+ do_join = true;
+ else if (priv->join_status == CW1200_JOIN_STATUS_AP)
+ cw1200_update_beaconing(priv);
+ }
+
+ /* assoc/disassoc, or maybe AID changed */
+ if (changed & BSS_CHANGED_ASSOC) {
+ wsm_lock_tx(priv);
+ priv->wep_default_key_id = -1;
+ wsm_unlock_tx(priv);
+ }
+
+ if (changed & BSS_CHANGED_BSSID) {
+ pr_debug("BSS_CHANGED_BSSID\n");
+ do_join = true;
+ }
+
+ if (changed &
+ (BSS_CHANGED_ASSOC |
+ BSS_CHANGED_BSSID |
+ BSS_CHANGED_IBSS |
+ BSS_CHANGED_BASIC_RATES |
+ BSS_CHANGED_HT)) {
+ pr_debug("BSS_CHANGED_ASSOC\n");
+ if (info->assoc) {
+ if (priv->join_status < CW1200_JOIN_STATUS_PRE_STA) {
+ ieee80211_connection_loss(vif);
+ mutex_unlock(&priv->conf_mutex);
+ return;
+ } else if (priv->join_status == CW1200_JOIN_STATUS_PRE_STA) {
+ priv->join_status = CW1200_JOIN_STATUS_STA;
+ }
+ } else {
+ do_join = true;
+ }
+
+ if (info->assoc || info->ibss_joined) {
+ struct ieee80211_sta *sta = NULL;
+ __le32 htprot = 0;
+
+ if (info->dtim_period)
+ priv->join_dtim_period = info->dtim_period;
+ priv->beacon_int = info->beacon_int;
+
+ rcu_read_lock();
+
+ if (info->bssid && !info->ibss_joined)
+ sta = ieee80211_find_sta(vif, info->bssid);
+ if (sta) {
+ priv->ht_info.ht_cap = sta->ht_cap;
+ priv->bss_params.operational_rate_set =
+ cw1200_rate_mask_to_wsm(priv,
+ sta->supp_rates[priv->channel->band]);
+ priv->ht_info.channel_type = cfg80211_get_chandef_type(&dev->conf.chandef);
+ priv->ht_info.operation_mode = info->ht_operation_mode;
+ } else {
+ memset(&priv->ht_info, 0,
+ sizeof(priv->ht_info));
+ priv->bss_params.operational_rate_set = -1;
+ }
+ rcu_read_unlock();
+
+ /* Non Greenfield stations present */
+ if (priv->ht_info.operation_mode &
+ IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT)
+ htprot |= cpu_to_le32(WSM_NON_GREENFIELD_STA_PRESENT);
+
+ /* Set HT protection method */
+ htprot |= cpu_to_le32((priv->ht_info.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION) << 2);
+
+ /* TODO:
+ * STBC_param.dual_cts
+ * STBC_param.LSIG_TXOP_FILL
+ */
+
+ wsm_write_mib(priv, WSM_MIB_ID_SET_HT_PROTECTION,
+ &htprot, sizeof(htprot));
+
+ priv->association_mode.greenfield =
+ cw1200_ht_greenfield(&priv->ht_info);
+ priv->association_mode.flags =
+ WSM_ASSOCIATION_MODE_SNOOP_ASSOC_FRAMES |
+ WSM_ASSOCIATION_MODE_USE_PREAMBLE_TYPE |
+ WSM_ASSOCIATION_MODE_USE_HT_MODE |
+ WSM_ASSOCIATION_MODE_USE_BASIC_RATE_SET |
+ WSM_ASSOCIATION_MODE_USE_MPDU_START_SPACING;
+ priv->association_mode.preamble =
+ info->use_short_preamble ?
+ WSM_JOIN_PREAMBLE_SHORT :
+ WSM_JOIN_PREAMBLE_LONG;
+ priv->association_mode.basic_rate_set = __cpu_to_le32(
+ cw1200_rate_mask_to_wsm(priv,
+ info->basic_rates));
+ priv->association_mode.mpdu_start_spacing =
+ cw1200_ht_ampdu_density(&priv->ht_info);
+
+ cw1200_cqm_bssloss_sm(priv, 0, 0, 0);
+ cancel_work_sync(&priv->unjoin_work);
+
+ priv->bss_params.beacon_lost_count = priv->cqm_beacon_loss_count;
+ priv->bss_params.aid = info->aid;
+
+ if (priv->join_dtim_period < 1)
+ priv->join_dtim_period = 1;
+
+ pr_debug("[STA] DTIM %d, interval: %d\n",
+ priv->join_dtim_period, priv->beacon_int);
+ pr_debug("[STA] Preamble: %d, Greenfield: %d, Aid: %d, Rates: 0x%.8X, Basic: 0x%.8X\n",
+ priv->association_mode.preamble,
+ priv->association_mode.greenfield,
+ priv->bss_params.aid,
+ priv->bss_params.operational_rate_set,
+ priv->association_mode.basic_rate_set);
+ wsm_set_association_mode(priv, &priv->association_mode);
+
+ if (!info->ibss_joined) {
+ wsm_keep_alive_period(priv, 30 /* sec */);
+ wsm_set_bss_params(priv, &priv->bss_params);
+ priv->setbssparams_done = true;
+ cw1200_set_beacon_wakeup_period_work(&priv->set_beacon_wakeup_period_work);
+ cw1200_set_pm(priv, &priv->powersave_mode);
+ }
+ if (priv->vif->p2p) {
+ pr_debug("[STA] Setting p2p powersave configuration.\n");
+ wsm_set_p2p_ps_modeinfo(priv,
+ &priv->p2p_ps_modeinfo);
+ }
+ if (priv->bt_present)
+ cw1200_set_btcoexinfo(priv);
+ } else {
+ memset(&priv->association_mode, 0,
+ sizeof(priv->association_mode));
+ memset(&priv->bss_params, 0, sizeof(priv->bss_params));
+ }
+ }
+
+ /* ERP Protection */
+ if (changed & (BSS_CHANGED_ASSOC |
+ BSS_CHANGED_ERP_CTS_PROT |
+ BSS_CHANGED_ERP_PREAMBLE)) {
+ u32 prev_erp_info = priv->erp_info;
+ if (info->use_cts_prot)
+ priv->erp_info |= WLAN_ERP_USE_PROTECTION;
+ else if (!(prev_erp_info & WLAN_ERP_NON_ERP_PRESENT))
+ priv->erp_info &= ~WLAN_ERP_USE_PROTECTION;
+
+ if (info->use_short_preamble)
+ priv->erp_info |= WLAN_ERP_BARKER_PREAMBLE;
+ else
+ priv->erp_info &= ~WLAN_ERP_BARKER_PREAMBLE;
+
+ pr_debug("[STA] ERP Protection: %x\n", priv->erp_info);
+
+ if (prev_erp_info != priv->erp_info)
+ queue_work(priv->workqueue, &priv->set_cts_work);
+ }
+
+ /* ERP Slottime */
+ if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_SLOT)) {
+ __le32 slot_time = info->use_short_slot ?
+ __cpu_to_le32(9) : __cpu_to_le32(20);
+ pr_debug("[STA] Slot time: %d us.\n",
+ __le32_to_cpu(slot_time));
+ wsm_write_mib(priv, WSM_MIB_ID_DOT11_SLOT_TIME,
+ &slot_time, sizeof(slot_time));
+ }
+
+ if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_CQM)) {
+ struct wsm_rcpi_rssi_threshold threshold = {
+ .rollingAverageCount = 8,
+ };
+ pr_debug("[CQM] RSSI threshold subscribe: %d +- %d\n",
+ info->cqm_rssi_thold, info->cqm_rssi_hyst);
+ priv->cqm_rssi_thold = info->cqm_rssi_thold;
+ priv->cqm_rssi_hyst = info->cqm_rssi_hyst;
+
+ if (info->cqm_rssi_thold || info->cqm_rssi_hyst) {
+ /* RSSI subscription enabled */
+ /* TODO: It's not a correct way of setting threshold.
+ * Upper and lower must be set equal here and adjusted
+ * in callback. However current implementation is much
+ * more relaible and stable.
+ */
+
+ /* RSSI: signed Q8.0, RCPI: unsigned Q7.1
+ * RSSI = RCPI / 2 - 110
+ */
+ if (priv->cqm_use_rssi) {
+ threshold.upperThreshold =
+ info->cqm_rssi_thold + info->cqm_rssi_hyst;
+ threshold.lowerThreshold =
+ info->cqm_rssi_thold;
+ threshold.rssiRcpiMode |= WSM_RCPI_RSSI_USE_RSSI;
+ } else {
+ threshold.upperThreshold = (info->cqm_rssi_thold + info->cqm_rssi_hyst + 110) * 2;
+ threshold.lowerThreshold = (info->cqm_rssi_thold + 110) * 2;
+ }
+ threshold.rssiRcpiMode |= WSM_RCPI_RSSI_THRESHOLD_ENABLE;
+ } else {
+ /* There is a bug in FW, see sta.c. We have to enable
+ * dummy subscription to get correct RSSI values.
+ */
+ threshold.rssiRcpiMode |=
+ WSM_RCPI_RSSI_THRESHOLD_ENABLE |
+ WSM_RCPI_RSSI_DONT_USE_UPPER |
+ WSM_RCPI_RSSI_DONT_USE_LOWER;
+ if (priv->cqm_use_rssi)
+ threshold.rssiRcpiMode |= WSM_RCPI_RSSI_USE_RSSI;
+ }
+ wsm_set_rcpi_rssi_threshold(priv, &threshold);
+ }
+ mutex_unlock(&priv->conf_mutex);
+
+ if (do_join) {
+ wsm_lock_tx(priv);
+ cw1200_do_join(priv); /* Will unlock it for us */
+ }
+}
+
+void cw1200_multicast_start_work(struct work_struct *work)
+{
+ struct cw1200_common *priv =
+ container_of(work, struct cw1200_common, multicast_start_work);
+ long tmo = priv->join_dtim_period *
+ (priv->beacon_int + 20) * HZ / 1024;
+
+ cancel_work_sync(&priv->multicast_stop_work);
+
+ if (!priv->aid0_bit_set) {
+ wsm_lock_tx(priv);
+ cw1200_set_tim_impl(priv, true);
+ priv->aid0_bit_set = true;
+ mod_timer(&priv->mcast_timeout, jiffies + tmo);
+ wsm_unlock_tx(priv);
+ }
+}
+
+void cw1200_multicast_stop_work(struct work_struct *work)
+{
+ struct cw1200_common *priv =
+ container_of(work, struct cw1200_common, multicast_stop_work);
+
+ if (priv->aid0_bit_set) {
+ del_timer_sync(&priv->mcast_timeout);
+ wsm_lock_tx(priv);
+ priv->aid0_bit_set = false;
+ cw1200_set_tim_impl(priv, false);
+ wsm_unlock_tx(priv);
+ }
+}
+
+void cw1200_mcast_timeout(unsigned long arg)
+{
+ struct cw1200_common *priv =
+ (struct cw1200_common *)arg;
+
+ wiphy_warn(priv->hw->wiphy,
+ "Multicast delivery timeout.\n");
+ spin_lock_bh(&priv->ps_state_lock);
+ priv->tx_multicast = priv->aid0_bit_set &&
+ priv->buffered_multicasts;
+ if (priv->tx_multicast)
+ cw1200_bh_wakeup(priv);
+ spin_unlock_bh(&priv->ps_state_lock);
+}
+
+int cw1200_ampdu_action(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ enum ieee80211_ampdu_mlme_action action,
+ struct ieee80211_sta *sta, u16 tid, u16 *ssn,
+ u8 buf_size)
+{
+ /* Aggregation is implemented fully in firmware,
+ * including block ack negotiation. Do not allow
+ * mac80211 stack to do anything: it interferes with
+ * the firmware.
+ */
+
+ /* Note that we still need this function stubbed. */
+ return -ENOTSUPP;
+}
+
+/* ******************************************************************** */
+/* WSM callback */
+void cw1200_suspend_resume(struct cw1200_common *priv,
+ struct wsm_suspend_resume *arg)
+{
+ pr_debug("[AP] %s: %s\n",
+ arg->stop ? "stop" : "start",
+ arg->multicast ? "broadcast" : "unicast");
+
+ if (arg->multicast) {
+ bool cancel_tmo = false;
+ spin_lock_bh(&priv->ps_state_lock);
+ if (arg->stop) {
+ priv->tx_multicast = false;
+ } else {
+ /* Firmware sends this indication every DTIM if there
+ * is a STA in powersave connected. There is no reason
+ * to suspend, following wakeup will consume much more
+ * power than it could be saved.
+ */
+ cw1200_pm_stay_awake(&priv->pm_state,
+ priv->join_dtim_period *
+ (priv->beacon_int + 20) * HZ / 1024);
+ priv->tx_multicast = (priv->aid0_bit_set &&
+ priv->buffered_multicasts);
+ if (priv->tx_multicast) {
+ cancel_tmo = true;
+ cw1200_bh_wakeup(priv);
+ }
+ }
+ spin_unlock_bh(&priv->ps_state_lock);
+ if (cancel_tmo)
+ del_timer_sync(&priv->mcast_timeout);
+ } else {
+ spin_lock_bh(&priv->ps_state_lock);
+ cw1200_ps_notify(priv, arg->link_id, arg->stop);
+ spin_unlock_bh(&priv->ps_state_lock);
+ if (!arg->stop)
+ cw1200_bh_wakeup(priv);
+ }
+ return;
+}
+
+/* ******************************************************************** */
+/* AP privates */
+
+static int cw1200_upload_beacon(struct cw1200_common *priv)
+{
+ int ret = 0;
+ struct ieee80211_mgmt *mgmt;
+ struct wsm_template_frame frame = {
+ .frame_type = WSM_FRAME_TYPE_BEACON,
+ };
+
+ u16 tim_offset;
+ u16 tim_len;
+
+ if (priv->mode == NL80211_IFTYPE_STATION ||
+ priv->mode == NL80211_IFTYPE_MONITOR ||
+ priv->mode == NL80211_IFTYPE_UNSPECIFIED)
+ goto done;
+
+ if (priv->vif->p2p)
+ frame.rate = WSM_TRANSMIT_RATE_6;
+
+ frame.skb = ieee80211_beacon_get_tim(priv->hw, priv->vif,
+ &tim_offset, &tim_len);
+ if (!frame.skb)
+ return -ENOMEM;
+
+ ret = wsm_set_template_frame(priv, &frame);
+
+ if (ret)
+ goto done;
+
+ /* TODO: Distill probe resp; remove TIM
+ * and any other beacon-specific IEs
+ */
+ mgmt = (void *)frame.skb->data;
+ mgmt->frame_control =
+ __cpu_to_le16(IEEE80211_FTYPE_MGMT |
+ IEEE80211_STYPE_PROBE_RESP);
+
+ frame.frame_type = WSM_FRAME_TYPE_PROBE_RESPONSE;
+ if (priv->vif->p2p) {
+ ret = wsm_set_probe_responder(priv, true);
+ } else {
+ ret = wsm_set_template_frame(priv, &frame);
+ wsm_set_probe_responder(priv, false);
+ }
+
+done:
+ dev_kfree_skb(frame.skb);
+
+ return ret;
+}
+
+static int cw1200_upload_pspoll(struct cw1200_common *priv)
+{
+ int ret = 0;
+ struct wsm_template_frame frame = {
+ .frame_type = WSM_FRAME_TYPE_PS_POLL,
+ .rate = 0xFF,
+ };
+
+
+ frame.skb = ieee80211_pspoll_get(priv->hw, priv->vif);
+ if (!frame.skb)
+ return -ENOMEM;
+
+ ret = wsm_set_template_frame(priv, &frame);
+
+ dev_kfree_skb(frame.skb);
+
+ return ret;
+}
+
+static int cw1200_upload_null(struct cw1200_common *priv)
+{
+ int ret = 0;
+ struct wsm_template_frame frame = {
+ .frame_type = WSM_FRAME_TYPE_NULL,
+ .rate = 0xFF,
+ };
+
+ frame.skb = ieee80211_nullfunc_get(priv->hw, priv->vif);
+ if (!frame.skb)
+ return -ENOMEM;
+
+ ret = wsm_set_template_frame(priv, &frame);
+
+ dev_kfree_skb(frame.skb);
+
+ return ret;
+}
+
+static int cw1200_upload_qosnull(struct cw1200_common *priv)
+{
+ /* TODO: This needs to be implemented
+
+ struct wsm_template_frame frame = {
+ .frame_type = WSM_FRAME_TYPE_QOS_NULL,
+ .rate = 0xFF,
+ };
+
+ frame.skb = ieee80211_qosnullfunc_get(priv->hw, priv->vif);
+ if (!frame.skb)
+ return -ENOMEM;
+
+ ret = wsm_set_template_frame(priv, &frame);
+
+ dev_kfree_skb(frame.skb);
+
+ */
+ return 0;
+}
+
+static int cw1200_enable_beaconing(struct cw1200_common *priv,
+ bool enable)
+{
+ struct wsm_beacon_transmit transmit = {
+ .enable_beaconing = enable,
+ };
+
+ return wsm_beacon_transmit(priv, &transmit);
+}
+
+static int cw1200_start_ap(struct cw1200_common *priv)
+{
+ int ret;
+ struct ieee80211_bss_conf *conf = &priv->vif->bss_conf;
+ struct wsm_start start = {
+ .mode = priv->vif->p2p ?
+ WSM_START_MODE_P2P_GO : WSM_START_MODE_AP,
+ .band = (priv->channel->band == IEEE80211_BAND_5GHZ) ?
+ WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G,
+ .channel_number = priv->channel->hw_value,
+ .beacon_interval = conf->beacon_int,
+ .dtim_period = conf->dtim_period,
+ .preamble = conf->use_short_preamble ?
+ WSM_JOIN_PREAMBLE_SHORT :
+ WSM_JOIN_PREAMBLE_LONG,
+ .probe_delay = 100,
+ .basic_rate_set = cw1200_rate_mask_to_wsm(priv,
+ conf->basic_rates),
+ };
+ struct wsm_operational_mode mode = {
+ .power_mode = cw1200_power_mode,
+ .disable_more_flag_usage = true,
+ };
+
+ memset(start.ssid, 0, sizeof(start.ssid));
+ if (!conf->hidden_ssid) {
+ start.ssid_len = conf->ssid_len;
+ memcpy(start.ssid, conf->ssid, start.ssid_len);
+ }
+
+ priv->beacon_int = conf->beacon_int;
+ priv->join_dtim_period = conf->dtim_period;
+
+ memset(&priv->link_id_db, 0, sizeof(priv->link_id_db));
+
+ pr_debug("[AP] ch: %d(%d), bcn: %d(%d), brt: 0x%.8X, ssid: %.*s.\n",
+ start.channel_number, start.band,
+ start.beacon_interval, start.dtim_period,
+ start.basic_rate_set,
+ start.ssid_len, start.ssid);
+ ret = wsm_start(priv, &start);
+ if (!ret)
+ ret = cw1200_upload_keys(priv);
+ if (!ret && priv->vif->p2p) {
+ pr_debug("[AP] Setting p2p powersave configuration.\n");
+ wsm_set_p2p_ps_modeinfo(priv, &priv->p2p_ps_modeinfo);
+ }
+ if (!ret) {
+ wsm_set_block_ack_policy(priv, 0, 0);
+ priv->join_status = CW1200_JOIN_STATUS_AP;
+ cw1200_update_filtering(priv);
+ }
+ wsm_set_operational_mode(priv, &mode);
+ return ret;
+}
+
+static int cw1200_update_beaconing(struct cw1200_common *priv)
+{
+ struct ieee80211_bss_conf *conf = &priv->vif->bss_conf;
+ struct wsm_reset reset = {
+ .link_id = 0,
+ .reset_statistics = true,
+ };
+
+ if (priv->mode == NL80211_IFTYPE_AP) {
+ /* TODO: check if changed channel, band */
+ if (priv->join_status != CW1200_JOIN_STATUS_AP ||
+ priv->beacon_int != conf->beacon_int) {
+ pr_debug("ap restarting\n");
+ wsm_lock_tx(priv);
+ if (priv->join_status != CW1200_JOIN_STATUS_PASSIVE)
+ wsm_reset(priv, &reset);
+ priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
+ cw1200_start_ap(priv);
+ wsm_unlock_tx(priv);
+ } else
+ pr_debug("ap started join_status: %d\n",
+ priv->join_status);
+ }
+ return 0;
+}
Code Review / kvmfornfv.git / blobdiff