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author | Kalle Valo <kvalo@codeaurora.org> | 2015-11-17 20:09:02 +0200 |
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committer | Kalle Valo <kvalo@codeaurora.org> | 2015-11-18 14:28:30 +0200 |
commit | 560424e9a979a7b460055bda497bb4522ba5cc87 (patch) | |
tree | 53d3a3fb2beb0df84a3933934243249e71021c7c /drivers/net/wireless/cw1200/sta.c | |
parent | 05491d2ccf20b20a1375303441fbbfbd12b24a4f (diff) | |
download | linux-560424e9a979a7b460055bda497bb4522ba5cc87.tar.gz linux-560424e9a979a7b460055bda497bb4522ba5cc87.tar.bz2 linux-560424e9a979a7b460055bda497bb4522ba5cc87.zip |
cw1200: move under st vendor directory
Part of reorganising wireless drivers directory and Kconfig.
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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 95a7fdb3cc1c..000000000000 --- 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 S |