diff options
Diffstat (limited to 'drivers/net/wireless/cw1200/sta.c')
| -rw-r--r-- | drivers/net/wireless/cw1200/sta.c | 2399 |
1 files changed, 0 insertions, 2399 deletions
diff --git a/drivers/net/wireless/cw1200/sta.c b/drivers/net/wireless/cw1200/sta.c deleted file mode 100644 index dcc1bc998..000000000 --- a/drivers/net/wireless/cw1200/sta.c +++ /dev/null @@ -1,2399 +0,0 @@ -/* - * 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_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->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 = reject_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, bool amsdu) -{ - /* 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; -} |