// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Mac80211 STA API for ST-Ericsson CW1200 drivers
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*
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* Copyright (c) 2010, ST-Ericsson
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* Author: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
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*/
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#include <linux/vmalloc.h>
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#include <linux/sched.h>
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#include <linux/firmware.h>
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#include <linux/module.h>
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#include <linux/etherdevice.h>
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#include "cw1200.h"
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#include "sta.h"
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#include "fwio.h"
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#include "bh.h"
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#include "debug.h"
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#ifndef ERP_INFO_BYTE_OFFSET
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#define ERP_INFO_BYTE_OFFSET 2
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#endif
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static void cw1200_do_join(struct cw1200_common *priv);
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static void cw1200_do_unjoin(struct cw1200_common *priv);
|
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static int cw1200_upload_beacon(struct cw1200_common *priv);
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static int cw1200_upload_pspoll(struct cw1200_common *priv);
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static int cw1200_upload_null(struct cw1200_common *priv);
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static int cw1200_upload_qosnull(struct cw1200_common *priv);
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static int cw1200_start_ap(struct cw1200_common *priv);
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static int cw1200_update_beaconing(struct cw1200_common *priv);
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static int cw1200_enable_beaconing(struct cw1200_common *priv,
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bool enable);
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static void __cw1200_sta_notify(struct ieee80211_hw *dev,
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struct ieee80211_vif *vif,
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enum sta_notify_cmd notify_cmd,
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int link_id);
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static int __cw1200_flush(struct cw1200_common *priv, bool drop);
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static inline void __cw1200_free_event_queue(struct list_head *list)
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{
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struct cw1200_wsm_event *event, *tmp;
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list_for_each_entry_safe(event, tmp, list, link) {
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list_del(&event->link);
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kfree(event);
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}
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}
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/* ******************************************************************** */
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/* STA API */
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int cw1200_start(struct ieee80211_hw *dev)
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{
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struct cw1200_common *priv = dev->priv;
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int ret = 0;
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cw1200_pm_stay_awake(&priv->pm_state, HZ);
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mutex_lock(&priv->conf_mutex);
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/* default EDCA */
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WSM_EDCA_SET(&priv->edca, 0, 0x0002, 0x0003, 0x0007, 47, 0xc8, false);
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WSM_EDCA_SET(&priv->edca, 1, 0x0002, 0x0007, 0x000f, 94, 0xc8, false);
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WSM_EDCA_SET(&priv->edca, 2, 0x0003, 0x000f, 0x03ff, 0, 0xc8, false);
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WSM_EDCA_SET(&priv->edca, 3, 0x0007, 0x000f, 0x03ff, 0, 0xc8, false);
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ret = wsm_set_edca_params(priv, &priv->edca);
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if (ret)
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goto out;
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ret = cw1200_set_uapsd_param(priv, &priv->edca);
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if (ret)
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goto out;
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priv->setbssparams_done = false;
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memcpy(priv->mac_addr, dev->wiphy->perm_addr, ETH_ALEN);
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priv->mode = NL80211_IFTYPE_MONITOR;
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priv->wep_default_key_id = -1;
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priv->cqm_beacon_loss_count = 10;
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ret = cw1200_setup_mac(priv);
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if (ret)
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goto out;
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out:
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mutex_unlock(&priv->conf_mutex);
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return ret;
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}
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void cw1200_stop(struct ieee80211_hw *dev)
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{
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struct cw1200_common *priv = dev->priv;
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LIST_HEAD(list);
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int i;
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wsm_lock_tx(priv);
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while (down_trylock(&priv->scan.lock)) {
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/* Scan is in progress. Force it to stop. */
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priv->scan.req = NULL;
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schedule();
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}
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up(&priv->scan.lock);
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cancel_delayed_work_sync(&priv->scan.probe_work);
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cancel_delayed_work_sync(&priv->scan.timeout);
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cancel_delayed_work_sync(&priv->clear_recent_scan_work);
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cancel_delayed_work_sync(&priv->join_timeout);
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cw1200_cqm_bssloss_sm(priv, 0, 0, 0);
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cancel_work_sync(&priv->unjoin_work);
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cancel_delayed_work_sync(&priv->link_id_gc_work);
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flush_workqueue(priv->workqueue);
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del_timer_sync(&priv->mcast_timeout);
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mutex_lock(&priv->conf_mutex);
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priv->mode = NL80211_IFTYPE_UNSPECIFIED;
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priv->listening = false;
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spin_lock(&priv->event_queue_lock);
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list_splice_init(&priv->event_queue, &list);
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spin_unlock(&priv->event_queue_lock);
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__cw1200_free_event_queue(&list);
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priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
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priv->join_pending = false;
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for (i = 0; i < 4; i++)
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cw1200_queue_clear(&priv->tx_queue[i]);
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mutex_unlock(&priv->conf_mutex);
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tx_policy_clean(priv);
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/* HACK! */
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if (atomic_xchg(&priv->tx_lock, 1) != 1)
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pr_debug("[STA] TX is force-unlocked due to stop request.\n");
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wsm_unlock_tx(priv);
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atomic_xchg(&priv->tx_lock, 0); /* for recovery to work */
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}
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static int cw1200_bssloss_mitigation = 1;
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module_param(cw1200_bssloss_mitigation, int, 0644);
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MODULE_PARM_DESC(cw1200_bssloss_mitigation, "BSS Loss mitigation. 0 == disabled, 1 == enabled (default)");
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void __cw1200_cqm_bssloss_sm(struct cw1200_common *priv,
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int init, int good, int bad)
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{
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int tx = 0;
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priv->delayed_link_loss = 0;
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cancel_work_sync(&priv->bss_params_work);
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pr_debug("[STA] CQM BSSLOSS_SM: state: %d init %d good %d bad: %d txlock: %d uj: %d\n",
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priv->bss_loss_state,
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init, good, bad,
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atomic_read(&priv->tx_lock),
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priv->delayed_unjoin);
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/* If we have a pending unjoin */
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if (priv->delayed_unjoin)
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return;
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if (init) {
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queue_delayed_work(priv->workqueue,
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&priv->bss_loss_work,
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HZ);
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priv->bss_loss_state = 0;
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/* Skip the confimration procedure in P2P case */
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if (!priv->vif->p2p && !atomic_read(&priv->tx_lock))
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tx = 1;
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} else if (good) {
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cancel_delayed_work_sync(&priv->bss_loss_work);
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priv->bss_loss_state = 0;
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queue_work(priv->workqueue, &priv->bss_params_work);
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} else if (bad) {
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/* XXX Should we just keep going until we time out? */
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if (priv->bss_loss_state < 3)
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tx = 1;
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} else {
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cancel_delayed_work_sync(&priv->bss_loss_work);
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priv->bss_loss_state = 0;
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}
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/* Bypass mitigation if it's disabled */
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if (!cw1200_bssloss_mitigation)
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tx = 0;
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/* Spit out a NULL packet to our AP if necessary */
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if (tx) {
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struct sk_buff *skb;
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priv->bss_loss_state++;
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skb = ieee80211_nullfunc_get(priv->hw, priv->vif, false);
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WARN_ON(!skb);
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if (skb)
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cw1200_tx(priv->hw, NULL, skb);
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}
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}
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int cw1200_add_interface(struct ieee80211_hw *dev,
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struct ieee80211_vif *vif)
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{
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int ret;
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struct cw1200_common *priv = dev->priv;
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/* __le32 auto_calibration_mode = __cpu_to_le32(1); */
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vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
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IEEE80211_VIF_SUPPORTS_UAPSD |
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IEEE80211_VIF_SUPPORTS_CQM_RSSI;
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mutex_lock(&priv->conf_mutex);
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if (priv->mode != NL80211_IFTYPE_MONITOR) {
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mutex_unlock(&priv->conf_mutex);
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return -EOPNOTSUPP;
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}
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switch (vif->type) {
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case NL80211_IFTYPE_STATION:
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case NL80211_IFTYPE_ADHOC:
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case NL80211_IFTYPE_MESH_POINT:
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case NL80211_IFTYPE_AP:
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priv->mode = vif->type;
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break;
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default:
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mutex_unlock(&priv->conf_mutex);
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return -EOPNOTSUPP;
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}
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priv->vif = vif;
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memcpy(priv->mac_addr, vif->addr, ETH_ALEN);
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ret = cw1200_setup_mac(priv);
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/* Enable auto-calibration */
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/* Exception in subsequent channel switch; disabled.
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* wsm_write_mib(priv, WSM_MIB_ID_SET_AUTO_CALIBRATION_MODE,
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* &auto_calibration_mode, sizeof(auto_calibration_mode));
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*/
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mutex_unlock(&priv->conf_mutex);
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return ret;
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}
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void cw1200_remove_interface(struct ieee80211_hw *dev,
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struct ieee80211_vif *vif)
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{
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struct cw1200_common *priv = dev->priv;
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struct wsm_reset reset = {
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.reset_statistics = true,
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};
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int i;
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mutex_lock(&priv->conf_mutex);
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switch (priv->join_status) {
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case CW1200_JOIN_STATUS_JOINING:
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case CW1200_JOIN_STATUS_PRE_STA:
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case CW1200_JOIN_STATUS_STA:
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case CW1200_JOIN_STATUS_IBSS:
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wsm_lock_tx(priv);
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if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0)
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wsm_unlock_tx(priv);
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break;
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case CW1200_JOIN_STATUS_AP:
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for (i = 0; priv->link_id_map; ++i) {
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if (priv->link_id_map & BIT(i)) {
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reset.link_id = i;
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wsm_reset(priv, &reset);
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priv->link_id_map &= ~BIT(i);
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}
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}
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memset(priv->link_id_db, 0, sizeof(priv->link_id_db));
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priv->sta_asleep_mask = 0;
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priv->enable_beacon = false;
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priv->tx_multicast = false;
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priv->aid0_bit_set = false;
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priv->buffered_multicasts = false;
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priv->pspoll_mask = 0;
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reset.link_id = 0;
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wsm_reset(priv, &reset);
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break;
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case CW1200_JOIN_STATUS_MONITOR:
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cw1200_update_listening(priv, false);
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break;
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default:
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break;
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}
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priv->vif = NULL;
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priv->mode = NL80211_IFTYPE_MONITOR;
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eth_zero_addr(priv->mac_addr);
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memset(&priv->p2p_ps_modeinfo, 0, sizeof(priv->p2p_ps_modeinfo));
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cw1200_free_keys(priv);
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cw1200_setup_mac(priv);
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priv->listening = false;
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priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
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if (!__cw1200_flush(priv, true))
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wsm_unlock_tx(priv);
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mutex_unlock(&priv->conf_mutex);
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}
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int cw1200_change_interface(struct ieee80211_hw *dev,
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struct ieee80211_vif *vif,
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enum nl80211_iftype new_type,
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bool p2p)
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{
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int ret = 0;
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pr_debug("change_interface new: %d (%d), old: %d (%d)\n", new_type,
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p2p, vif->type, vif->p2p);
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if (new_type != vif->type || vif->p2p != p2p) {
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cw1200_remove_interface(dev, vif);
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vif->type = new_type;
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vif->p2p = p2p;
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ret = cw1200_add_interface(dev, vif);
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}
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return ret;
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}
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int cw1200_config(struct ieee80211_hw *dev, u32 changed)
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{
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int ret = 0;
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struct cw1200_common *priv = dev->priv;
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struct ieee80211_conf *conf = &dev->conf;
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pr_debug("CONFIG CHANGED: %08x\n", changed);
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down(&priv->scan.lock);
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mutex_lock(&priv->conf_mutex);
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/* TODO: IEEE80211_CONF_CHANGE_QOS */
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/* TODO: IEEE80211_CONF_CHANGE_LISTEN_INTERVAL */
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if (changed & IEEE80211_CONF_CHANGE_POWER) {
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priv->output_power = conf->power_level;
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pr_debug("[STA] TX power: %d\n", priv->output_power);
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wsm_set_output_power(priv, priv->output_power * 10);
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}
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if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) &&
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(priv->channel != conf->chandef.chan)) {
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struct ieee80211_channel *ch = conf->chandef.chan;
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struct wsm_switch_channel channel = {
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.channel_number = ch->hw_value,
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};
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pr_debug("[STA] Freq %d (wsm ch: %d).\n",
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ch->center_freq, ch->hw_value);
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/* __cw1200_flush() implicitly locks tx, if successful */
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if (!__cw1200_flush(priv, false)) {
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if (!wsm_switch_channel(priv, &channel)) {
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ret = wait_event_timeout(priv->channel_switch_done,
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!priv->channel_switch_in_progress,
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3 * HZ);
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if (ret) {
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/* Already unlocks if successful */
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priv->channel = ch;
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ret = 0;
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} else {
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ret = -ETIMEDOUT;
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}
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} else {
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/* Unlock if switch channel fails */
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wsm_unlock_tx(priv);
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}
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}
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}
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if (changed & IEEE80211_CONF_CHANGE_PS) {
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if (!(conf->flags & IEEE80211_CONF_PS))
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priv->powersave_mode.mode = WSM_PSM_ACTIVE;
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else if (conf->dynamic_ps_timeout <= 0)
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priv->powersave_mode.mode = WSM_PSM_PS;
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else
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priv->powersave_mode.mode = WSM_PSM_FAST_PS;
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/* Firmware requires that value for this 1-byte field must
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* be specified in units of 500us. Values above the 128ms
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* threshold are not supported.
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*/
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if (conf->dynamic_ps_timeout >= 0x80)
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priv->powersave_mode.fast_psm_idle_period = 0xFF;
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else
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priv->powersave_mode.fast_psm_idle_period =
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conf->dynamic_ps_timeout << 1;
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if (priv->join_status == CW1200_JOIN_STATUS_STA &&
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priv->bss_params.aid)
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cw1200_set_pm(priv, &priv->powersave_mode);
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}
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if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
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/* TBD: It looks like it's transparent
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* there's a monitor interface present -- use this
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* to determine for example whether to calculate
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* timestamps for packets or not, do not use instead
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* of filter flags!
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*/
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}
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if (changed & IEEE80211_CONF_CHANGE_IDLE) {
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struct wsm_operational_mode mode = {
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.power_mode = cw1200_power_mode,
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.disable_more_flag_usage = true,
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};
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wsm_lock_tx(priv);
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/* Disable p2p-dev mode forced by TX request */
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if ((priv->join_status == CW1200_JOIN_STATUS_MONITOR) &&
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(conf->flags & IEEE80211_CONF_IDLE) &&
|
!priv->listening) {
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cw1200_disable_listening(priv);
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priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
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}
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wsm_set_operational_mode(priv, &mode);
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wsm_unlock_tx(priv);
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}
|
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if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) {
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pr_debug("[STA] Retry limits: %d (long), %d (short).\n",
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conf->long_frame_max_tx_count,
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conf->short_frame_max_tx_count);
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spin_lock_bh(&priv->tx_policy_cache.lock);
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priv->long_frame_max_tx_count = conf->long_frame_max_tx_count;
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priv->short_frame_max_tx_count =
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(conf->short_frame_max_tx_count < 0x0F) ?
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conf->short_frame_max_tx_count : 0x0F;
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priv->hw->max_rate_tries = priv->short_frame_max_tx_count;
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spin_unlock_bh(&priv->tx_policy_cache.lock);
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}
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mutex_unlock(&priv->conf_mutex);
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up(&priv->scan.lock);
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return ret;
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}
|
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void cw1200_update_filtering(struct cw1200_common *priv)
|
{
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int ret;
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bool bssid_filtering = !priv->rx_filter.bssid;
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bool is_p2p = priv->vif && priv->vif->p2p;
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bool is_sta = priv->vif && NL80211_IFTYPE_STATION == priv->vif->type;
|
|
static struct wsm_beacon_filter_control bf_ctrl;
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static struct wsm_mib_beacon_filter_table bf_tbl = {
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.entry[0].ie_id = WLAN_EID_VENDOR_SPECIFIC,
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.entry[0].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED |
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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_OTHER_BSS |
|
FIF_BCN_PRBRESP_PROMISC |
|
FIF_PROBE_REQ));
|
|
*total_flags &= 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 = 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_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->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, rcpi_rssi,
|
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 lead 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 == NL80211_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 == NL80211_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(struct timer_list *t)
|
{
|
struct cw1200_common *priv = from_timer(priv, t, mcast_timeout);
|
|
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,
|
struct ieee80211_ampdu_params *params)
|
{
|
/* 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, false);
|
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 == NL80211_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;
|
}
|
