diff options
Diffstat (limited to 'drivers/staging/cw1200/sta.c')
| -rw-r--r-- | drivers/staging/cw1200/sta.c | 1640 |
1 files changed, 1640 insertions, 0 deletions
diff --git a/drivers/staging/cw1200/sta.c b/drivers/staging/cw1200/sta.c new file mode 100644 index 00000000000..cc9ed7b1507 --- /dev/null +++ b/drivers/staging/cw1200/sta.c @@ -0,0 +1,1640 @@ +/* + * Mac80211 STA API for ST-Ericsson CW1200 drivers + * + * Copyright (c) 2010, ST-Ericsson + * Author: Dmitry Tarnyagin <dmitry.tarnyagin@stericsson.com> + * + * 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 "cw1200.h" +#include "sta.h" +#include "ap.h" +#include "fwio.h" +#include "bh.h" +#include "debug.h" + +#if defined(CONFIG_CW1200_STA_DEBUG) +#define sta_printk(...) printk(__VA_ARGS__) +#else +#define sta_printk(...) +#endif + +static inline void __cw1200_free_event_queue(struct list_head *list) +{ + while (!list_empty(list)) { + struct cw1200_wsm_event *event = + list_first_entry(list, struct cw1200_wsm_event, + 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; + + 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 (WARN_ON(ret)) + goto out; + + ret = cw1200_set_uapsd_param(priv, &priv->edca); + if (WARN_ON(ret)) + goto out; + + priv->setbssparams_done = false; + + memset(priv->bssid, ~0, ETH_ALEN); + memcpy(priv->mac_addr, dev->wiphy->perm_addr, ETH_ALEN); + priv->mode = NL80211_IFTYPE_MONITOR; + priv->softled_state = 0; + priv->wep_default_key_id = -1; + + priv->cqm_link_loss_count = 60; + priv->cqm_beacon_loss_count = 20; + + /* Temporary configuration - beacon filter table */ + priv->bf_table.numOfIEs = __cpu_to_le32(2); + priv->bf_table.entry[0].ieId = WLAN_EID_VENDOR_SPECIFIC; + priv->bf_table.entry[0].actionFlags = WSM_BEACON_FILTER_IE_HAS_CHANGED | + WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT | + WSM_BEACON_FILTER_IE_HAS_APPEARED; + priv->bf_table.entry[0].oui[0] = 0x50; + priv->bf_table.entry[0].oui[1] = 0x6F; + priv->bf_table.entry[0].oui[2] = 0x9A; + priv->bf_table.entry[1].ieId = WLAN_EID_ERP_INFO; + priv->bf_table.entry[1].actionFlags = WSM_BEACON_FILTER_IE_HAS_CHANGED | + WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT | + WSM_BEACON_FILTER_IE_HAS_APPEARED; + + priv->bf_control.enabled = 1; + ret = cw1200_setup_mac(priv); + if (WARN_ON(ret)) + goto out; + + /* err = cw1200_set_leds(priv); */ + +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->join_timeout); + cancel_delayed_work_sync(&priv->bss_loss_work); + cancel_delayed_work_sync(&priv->connection_loss_work); + cancel_delayed_work_sync(&priv->link_id_gc_work); + flush_workqueue(priv->workqueue); + del_timer_sync(&priv->mcast_timeout); + del_timer_sync(&priv->ba_timer); + + mutex_lock(&priv->conf_mutex); + priv->mode = NL80211_IFTYPE_UNSPECIFIED; + priv->listening = false; + + priv->softled_state = 0; + /* cw1200_set_leds(priv); */ + + 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->delayed_link_loss = 0; + + priv->join_status = CW1200_JOIN_STATUS_PASSIVE; + + for (i = 0; i < 4; i++) + cw1200_queue_clear(&priv->tx_queue[i]); + + /* HACK! */ + if (atomic_xchg(&priv->tx_lock, 1) != 1) + sta_printk(KERN_DEBUG "[STA] TX is force-unlocked " + "due to stop request.\n"); + + wsm_unlock_tx(priv); + + mutex_unlock(&priv->conf_mutex); +} + +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_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 = WARN_ON(cw1200_setup_mac(priv)); + /* Enable auto-calibration */ + /* Exception in subsequent channel switch; disabled. + WARN_ON(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); + wsm_lock_tx(priv); + switch (priv->join_status) { + case CW1200_JOIN_STATUS_STA: + 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; + memset(priv->mac_addr, 0, ETH_ALEN); + memset(priv->bssid, 0, ETH_ALEN); + 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); + wsm_unlock_tx(priv); + + mutex_unlock(&priv->conf_mutex); +} + +int cw1200_config(struct ieee80211_hw *dev, u32 changed) +{ + int ret = 0; + struct cw1200_common *priv = dev->priv; + struct ieee80211_conf *conf = &dev->conf; + + down(&priv->scan.lock); + mutex_lock(&priv->conf_mutex); + /* TODO: IEEE80211_CONF_CHANGE_QOS */ + if (changed & IEEE80211_CONF_CHANGE_POWER) { + priv->output_power = conf->power_level; + sta_printk(KERN_DEBUG "[STA] TX power: %d\n", + priv->output_power); + WARN_ON(wsm_set_output_power(priv, priv->output_power * 10)); + } + + if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) && + (priv->channel != conf->channel)) { + struct ieee80211_channel *ch = conf->channel; + struct wsm_switch_channel channel = { + .newChannelNumber = ch->hw_value, + }; + sta_printk(KERN_DEBUG "[STA] Freq %d (wsm ch: %d).\n", + ch->center_freq, ch->hw_value); + + ret = WARN_ON(__cw1200_flush(priv, false)); + if (!ret) { + ret = WARN_ON(wsm_switch_channel(priv, &channel)); + if (!ret) { + ret = wait_event_timeout( + priv->channel_switch_done, + !priv->channel_switch_in_progress, + 3 * HZ); + /* TODO: We should check also switch channel + * complete indication + */ + if (ret) { + priv->channel = ch; + ret = 0; + } else + ret = -ETIMEDOUT; + } else + wsm_unlock_tx(priv); + } + } + + if (changed & IEEE80211_CONF_CHANGE_PS) { + if (!(conf->flags & IEEE80211_CONF_PS)) + priv->powersave_mode.pmMode = WSM_PSM_ACTIVE; + else if (conf->dynamic_ps_timeout <= 0) + priv->powersave_mode.pmMode = WSM_PSM_PS; + else + priv->powersave_mode.pmMode = 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.fastPsmIdlePeriod = 0xFF; + else + priv->powersave_mode.fastPsmIdlePeriod = + 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 defined(CONFIG_CW1200_USE_STE_EXTENSIONS) + if (changed & IEEE80211_CONF_CHANGE_P2P_PS) { + struct wsm_p2p_ps_modeinfo *modeinfo; + modeinfo = &priv->p2p_ps_modeinfo; + sta_printk(KERN_DEBUG "[STA] IEEE80211_CONF_CHANGE_P2P_PS\n"); + sta_printk(KERN_DEBUG "[STA] Legacy PS: %d for AID %d " + "in %d mode.\n", conf->p2p_ps.legacy_ps, + priv->bss_params.aid, priv->join_status); + + if (conf->p2p_ps.legacy_ps >= 0) { + if (conf->p2p_ps.legacy_ps > 0) + priv->powersave_mode.pmMode = WSM_PSM_PS; + else + priv->powersave_mode.pmMode = WSM_PSM_ACTIVE; + + if (priv->join_status == CW1200_JOIN_STATUS_STA) + cw1200_set_pm(priv, &priv->powersave_mode); + } + + sta_printk(KERN_DEBUG "[STA] CTWindow: %d\n", + conf->p2p_ps.ctwindow); + if (conf->p2p_ps.ctwindow >= 128) + modeinfo->oppPsCTWindow = 127; + else if (conf->p2p_ps.ctwindow >= 0) + modeinfo->oppPsCTWindow = conf->p2p_ps.ctwindow; + + sta_printk(KERN_DEBUG "[STA] Opportunistic: %d\n", + conf->p2p_ps.opp_ps); + switch (conf->p2p_ps.opp_ps) { + case 0: + modeinfo->oppPsCTWindow &= ~(BIT(7)); + break; + case 1: + modeinfo->oppPsCTWindow |= BIT(7); + break; + default: + break; + } + + sta_printk(KERN_DEBUG "[STA] NOA: %d, %d, %d, %d\n", + conf->p2p_ps.count, + conf->p2p_ps.start, + conf->p2p_ps.duration, + conf->p2p_ps.interval); + /* Notice of Absence */ + modeinfo->count = conf->p2p_ps.count; + + if (conf->p2p_ps.count) { + /* In case P2P_GO we need some extra time to be sure + * we will update beacon/probe_resp IEs correctly */ +#define NOA_DELAY_START_MS 300 + if (priv->join_status == CW1200_JOIN_STATUS_AP) + modeinfo->startTime = + __cpu_to_le32(conf->p2p_ps.start + + NOA_DELAY_START_MS); + else + modeinfo->startTime = + __cpu_to_le32(conf->p2p_ps.start); + modeinfo->duration = + __cpu_to_le32(conf->p2p_ps.duration); + modeinfo->interval = + __cpu_to_le32(conf->p2p_ps.interval); + modeinfo->dtimCount = 1; + modeinfo->reserved = 0; + } else { + modeinfo->dtimCount = 0; + modeinfo->startTime = 0; + modeinfo->reserved = 0; + modeinfo->duration = 0; + modeinfo->interval = 0; + } + +#if defined(CONFIG_CW1200_STA_DEBUG) + print_hex_dump_bytes("p2p_set_ps_modeinfo: ", + DUMP_PREFIX_NONE, + (u8 *)modeinfo, + sizeof(*modeinfo)); +#endif /* CONFIG_CW1200_STA_DEBUG */ + if (priv->join_status == CW1200_JOIN_STATUS_STA || + priv->join_status == CW1200_JOIN_STATUS_AP) { + WARN_ON(wsm_set_p2p_ps_modeinfo(priv, modeinfo)); + } + + /* Temporary solution while firmware don't support NOA change + * notification yet */ + cw1200_notify_noa(priv, 10); + } +#endif /* CONFIG_CW1200_USE_STE_EXTENSIONS */ + + 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 = wsm_power_mode_quiescent, + .disableMoreFlagUsage = 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; + } + WARN_ON(wsm_set_operational_mode(priv, &mode)); + wsm_unlock_tx(priv); + } + + if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) { + sta_printk(KERN_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); + /* TBD: I think we don't need tx_policy_force_upload(). + * Outdated policies will leave cache in a normal way. */ + /* WARN_ON(tx_policy_force_upload(priv)); */ + } + 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; + static struct wsm_beacon_filter_control bf_disabled = { + .enabled = 0, + .bcn_count = 1, + }; + + if (priv->join_status == CW1200_JOIN_STATUS_PASSIVE) + return; + else if (priv->join_status == CW1200_JOIN_STATUS_MONITOR) + bssid_filtering = false; + + /* + * 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 (priv->vif->p2p) + bssid_filtering = false; + + ret = wsm_set_rx_filter(priv, &priv->rx_filter); + if (!ret) + ret = wsm_set_beacon_filter_table(priv, &priv->bf_table); + if (!ret) { + if (priv->disable_beacon_filter) + ret = wsm_beacon_filter_control(priv, + &bf_disabled); + else + ret = wsm_beacon_filter_control(priv, + &priv->bf_control); + } + 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, + "%s: Update filtering failed: %d.\n", + __func__, 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); +} + +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) { + sta_printk(KERN_DEBUG "[STA] multicast: %pM\n", ha->addr); + memcpy(&priv->multicast_filter.macAddress[count], + ha->addr, ETH_ALEN); + if (memcmp(ha->addr, broadcast_ipv4, ETH_ALEN) && + memcmp(ha->addr, broadcast_ipv6, ETH_ALEN)) + priv->has_multicast_subscription = true; + count++; + } + + if (count) { + priv->multicast_filter.enable = __cpu_to_le32(1); + priv->multicast_filter.numOfAddresses = __cpu_to_le32(count); + } + + return netdev_hw_addr_list_count(mc_list); +} + +void cw1200_configure_filter(struct ieee80211_hw *dev, + unsigned int changed_flags, + unsigned int *total_flags, + u64 multicast) +{ + struct cw1200_common *priv = dev->priv; + bool listening = !!(*total_flags & + (FIF_PROMISC_IN_BSS | + FIF_OTHER_BSS | + FIF_BCN_PRBRESP_PROMISC | + FIF_PROBE_REQ)); + + *total_flags &= FIF_PROMISC_IN_BSS | + FIF_OTHER_BSS | + FIF_FCSFAIL | + FIF_BCN_PRBRESP_PROMISC | + FIF_PROBE_REQ; + + down(&priv->scan.lock); + mutex_lock(&priv->conf_mutex); + + priv->rx_filter.promiscuous = (*total_flags & FIF_PROMISC_IN_BSS) + ? 1 : 0; + priv->rx_filter.bssid = (*total_flags & (FIF_OTHER_BSS | + FIF_PROBE_REQ)) ? 1 : 0; + priv->rx_filter.fcs = (*total_flags & FIF_FCSFAIL) ? 1 : 0; + priv->bf_control.bcn_count = (*total_flags & + (FIF_BCN_PRBRESP_PROMISC | + FIF_PROMISC_IN_BSS | + FIF_PROBE_REQ)) ? 1 : 0; + 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_uapsdFlags; + + mutex_lock(&priv->conf_mutex); + + if (queue < dev->queues) { + old_uapsdFlags = priv->uapsd_info.uapsdFlags; + + 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_uapsdFlags != priv->uapsd_info.uapsdFlags)) + 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_get_tx_stats(struct ieee80211_hw *dev, + struct ieee80211_tx_queue_stats *stats) +{ + int i; + struct cw1200_common *priv = dev->priv; + + for (i = 0; i < dev->queues; ++i) + cw1200_queue_get_stats(&priv->tx_queue[i], &stats[i]); + + 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.uapsdFlags != 0) + pm.pmMode &= ~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; + + 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; + } + + BUG_ON(pairwise && !sta); + if (sta) + peer_addr = sta->addr; + + 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->wepPairwiseKey.peerAddress, + peer_addr, ETH_ALEN); + memcpy(wsm_key->wepPairwiseKey.keyData, + &key->key[0], key->keylen); + wsm_key->wepPairwiseKey.keyLength = key->keylen; + } else { + wsm_key->type = WSM_KEY_TYPE_WEP_DEFAULT; + memcpy(wsm_key->wepGroupKey.keyData, + &key->key[0], key->keylen); + wsm_key->wepGroupKey.keyLength = key->keylen; + wsm_key->wepGroupKey.keyId = key->keyidx; + } + break; + case WLAN_CIPHER_SUITE_TKIP: + if (pairwise) { + wsm_key->type = WSM_KEY_TYPE_TKIP_PAIRWISE; + memcpy(wsm_key->tkipPairwiseKey.peerAddress, + peer_addr, ETH_ALEN); + memcpy(wsm_key->tkipPairwiseKey.tkipKeyData, + &key->key[0], 16); + memcpy(wsm_key->tkipPairwiseKey.txMicKey, + &key->key[16], 8); + memcpy(wsm_key->tkipPairwiseKey.rxMicKey, + &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->tkipGroupKey.tkipKeyData, + &key->key[0], 16); + memcpy(wsm_key->tkipGroupKey.rxMicKey, + &key->key[mic_offset], 8); + + /* TODO: Where can I find TKIP SEQ? */ + memset(wsm_key->tkipGroupKey.rxSeqCounter, + 0, 8); + wsm_key->tkipGroupKey.keyId = key->keyidx; + + print_hex_dump_bytes("TKIP: ", DUMP_PREFIX_NONE, + key->key, key->keylen); + } + break; + case WLAN_CIPHER_SUITE_CCMP: + if (pairwise) { + wsm_key->type = WSM_KEY_TYPE_AES_PAIRWISE; + memcpy(wsm_key->aesPairwiseKey.peerAddress, + peer_addr, ETH_ALEN); + memcpy(wsm_key->aesPairwiseKey.aesKeyData, + &key->key[0], 16); + } else { + wsm_key->type = WSM_KEY_TYPE_AES_GROUP; + memcpy(wsm_key->aesGroupKey.aesKeyData, + &key->key[0], 16); + /* TODO: Where can I find AES SEQ? */ + memset(wsm_key->aesGroupKey.rxSeqCounter, + 0, 8); + wsm_key->aesGroupKey.keyId = key->keyidx; + } + break; +#ifdef CONFIG_CW1200_WAPI_SUPPORT + case WLAN_CIPHER_SUITE_SMS4: + if (pairwise) { + wsm_key->type = WSM_KEY_TYPE_WAPI_PAIRWISE; + memcpy(wsm_key->wapiPairwiseKey.peerAddress, + peer_addr, ETH_ALEN); + memcpy(wsm_key->wapiPairwiseKey.wapiKeyData, + &key->key[0], 16); + memcpy(wsm_key->wapiPairwiseKey.micKeyData, + &key->key[16], 16); + wsm_key->wapiPairwiseKey.keyId = key->keyidx; + } else { + wsm_key->type = WSM_KEY_TYPE_WAPI_GROUP; + memcpy(wsm_key->wapiGroupKey.wapiKeyData, + &key->key[0], 16); + memcpy(wsm_key->wapiGroupKey.micKeyData, + &key->key[16], 16); + wsm_key->wapiGroupKey.keyId = key->keyidx; + } + break; +#endif /* CONFIG_CW1200_WAPI_SUPPORT */ + default: + WARN_ON(1); + cw1200_free_key(priv, idx); + ret = -EOPNOTSUPP; + goto finally; + } + ret = WARN_ON(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 = { + .entryIndex = key->hw_key_idx, + }; + + if (wsm_key.entryIndex > WSM_KEY_MAX_INDEX) { + ret = -EINVAL; + goto finally; + } + + cw1200_free_key(priv, wsm_key.entryIndex); + ret = wsm_remove_key(priv, &wsm_key); + } else { + BUG_ON("Unsupported command"); + } + +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 queueId = cw1200_queue_get_queue_id(priv->pending_frame_id); + struct cw1200_queue *queue = &priv->tx_queue[queueId]; + __le32 wep_default_key_id = __cpu_to_le32( + priv->wep_default_key_id); + + BUG_ON(queueId >= 4); + + sta_printk(KERN_DEBUG "[STA] Setting default WEP key: %d\n", + priv->wep_default_key_id); + wsm_flush_tx(priv); + WARN_ON(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; + __le32 val32; + + if (value != (u32) -1) + val32 = __cpu_to_le32(value); + else + val32 = 0; /* disabled */ + + /* mutex_lock(&priv->conf_mutex); */ + ret = WARN_ON(wsm_write_mib(hw->priv, WSM_MIB_ID_DOT11_RTS_THRESHOLD, + &val32, sizeof(val32))); + /* mutex_unlock(&priv->conf_mutex); */ + return ret; +} + +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 && unlikely(ret <= 0)) { + ret = -ETIMEDOUT; + break; + } else { + ret = 0; + } + + wsm_lock_tx(priv); + if (unlikely(!cw1200_queue_stats_is_empty( + &priv->tx_queue_stats, -1))) { + /* Highly unlekely: WSM requeued frames. */ + wsm_unlock_tx(priv); + continue; + } + break; + } + return ret; +} + +void cw1200_flush(struct ieee80211_hw *hw, 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 (!WARN_ON(__cw1200_flush(priv, drop))) + wsm_unlock_tx(priv); + + return; +} + +/* ******************************************************************** */ +/* WSM callbacks */ + +void cw1200_channel_switch_cb(struct cw1200_common *priv) +{ + wsm_unlock_tx(priv); +} + +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.eventId) { + case WSM_EVENT_ERROR: + /* I even don't know what is it about.. */ + STUB(); + break; + case WSM_EVENT_BSS_LOST: + { + spin_lock(&priv->bss_loss_lock); + if (priv->bss_loss_status > CW1200_BSS_LOSS_NONE) { + spin_unlock(&priv->bss_loss_lock); + break; + } + priv->bss_loss_status = CW1200_BSS_LOSS_CHECKING; + spin_unlock(&priv->bss_loss_lock); + + sta_printk(KERN_DEBUG "[CQM] BSS lost.\n"); + cancel_delayed_work_sync(&priv->bss_loss_work); + cancel_delayed_work_sync(&priv->connection_loss_work); + if (!down_trylock(&priv->scan.lock)) { + up(&priv->scan.lock); + priv->delayed_link_loss = 0; + queue_delayed_work(priv->workqueue, + &priv->bss_loss_work, 0); + } else { + /* Scan is in progress. Delay reporting. */ + /* Scan complete will trigger bss_loss_work */ + priv->delayed_link_loss = 1; + /* Also we're starting watchdog. */ + queue_delayed_work(priv->workqueue, + &priv->bss_loss_work, 10 * HZ); + } + break; + } + case WSM_EVENT_BSS_REGAINED: + { + sta_printk(KERN_DEBUG "[CQM] BSS regained.\n"); + priv->delayed_link_loss = 0; + spin_lock(&priv->bss_loss_lock); + priv->bss_loss_status = CW1200_BSS_LOSS_NONE; + spin_unlock(&priv->bss_loss_lock); + cancel_delayed_work_sync(&priv->bss_loss_work); + cancel_delayed_work_sync(&priv->connection_loss_work); + break; + } + case WSM_EVENT_RADAR_DETECTED: + STUB(); + break; + case WSM_EVENT_RCPI_RSSI: + { + /* RSSI: signed Q8.0, RCPI: unsigned Q7.1 + * RSSI = RCPI / 2 - 110 */ + int rcpiRssi = (int)(event->evt.eventData & 0xFF); + int cqm_evt; + if (priv->cqm_use_rssi) + rcpiRssi = (s8)rcpiRssi; + else + rcpiRssi = rcpiRssi / 2 - 110; + + cqm_evt = (rcpiRssi <= priv->cqm_rssi_thold) ? + NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW : + NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH; + sta_printk(KERN_DEBUG "[CQM] RSSI event: %d", rcpiRssi); + ieee80211_cqm_rssi_notify(priv->vif, cqm_evt, + GFP_KERNEL); + break; + } + case WSM_EVENT_BT_INACTIVE: + STUB(); + break; + case WSM_EVENT_BT_ACTIVE: + STUB(); + 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); + int timeout; /* in beacons */ + struct sk_buff *skb; + + timeout = priv->cqm_link_loss_count - + priv->cqm_beacon_loss_count; + + /* Skip the confimration procedure in P2P case */ + if (priv->vif->p2p) + goto report; + + spin_lock(&priv->bss_loss_lock); + if (priv->bss_loss_status == CW1200_BSS_LOSS_CHECKING) { + spin_unlock(&priv->bss_loss_lock); + skb = ieee80211_nullfunc_get(priv->hw, priv->vif); + if (!(WARN_ON(!skb))) { + cw1200_tx(priv->hw, skb); + /* Start watchdog -- if nullfunc TX doesn't fail + * in 1 sec, forward event to upper layers */ + queue_delayed_work(priv->workqueue, + &priv->bss_loss_work, 1 * HZ); + } + return; + } else if (priv->bss_loss_status == CW1200_BSS_LOSS_CONFIRMING) { + priv->bss_loss_status = CW1200_BSS_LOSS_NONE; + spin_unlock(&priv->bss_loss_lock); + return; + } + spin_unlock(&priv->bss_loss_lock); + +report: + if (priv->cqm_beacon_loss_count) { + sta_printk(KERN_DEBUG "[CQM] Beacon loss.\n"); + if (timeout <= 0) + timeout = 0; +#if defined(CONFIG_CW1200_USE_STE_EXTENSIONS) + ieee80211_cqm_beacon_miss_notify(priv->vif, GFP_KERNEL); +#endif /* CONFIG_CW1200_USE_STE_EXTENSIONS */ + } else { + timeout = 0; + } + + cancel_delayed_work_sync(&priv->connection_loss_work); + queue_delayed_work(priv->workqueue, + &priv->connection_loss_work, + timeout * HZ / 10); + + spin_lock(&priv->bss_loss_lock); + priv->bss_loss_status = CW1200_BSS_LOSS_NONE; + spin_unlock(&priv->bss_loss_lock); +} + +void cw1200_connection_loss_work(struct work_struct *work) +{ + struct cw1200_common *priv = + container_of(work, struct cw1200_common, + connection_loss_work.work); + sta_printk(KERN_DEBUG "[CQM] Reporting connection loss.\n"); + ieee80211_connection_loss(priv->vif); +} + +void cw1200_tx_failure_work(struct work_struct *work) +{ + struct cw1200_common *priv = + container_of(work, struct cw1200_common, tx_failure_work); + sta_printk(KERN_DEBUG "[CQM] Reporting TX failure.\n"); +#if defined(CONFIG_CW1200_USE_STE_EXTENSIONS) + ieee80211_cqm_tx_fail_notify(priv->vif, GFP_KERNEL); +#else /* CONFIG_CW1200_USE_STE_EXTENSIONS */ + (void)priv; +#endif /* CONFIG_CW1200_USE_STE_EXTENSIONS */ +} + +/* ******************************************************************** */ +/* Internal API */ + + + +/* +* This function is called to Parse the SDD file + *to extract listen_interval and PTA related information +*/ +static int cw1200_parse_SDD_file(struct cw1200_common *priv) +{ + u8 *sdd_data = (u8 *)priv->sdd->data; + struct cw1200_sdd { + u8 id ; + u8 length ; + u8 data[] ; + } *pElement; + int parsedLength = 0; + #define SDD_PTA_CFG_ELT_ID 0xEB + #define FIELD_OFFSET(type, field) ((u8 *)&((type *)0)->field - (u8 *)0) + + priv->is_BT_Present = false; + + pElement = (struct cw1200_sdd *)sdd_data; + + pElement = (struct cw1200_sdd *)((u8 *)pElement + + FIELD_OFFSET(struct cw1200_sdd, data) + pElement->length); + + parsedLength += (FIELD_OFFSET(struct cw1200_sdd, data) + + pElement->length); + + while (parsedLength <= priv->sdd->size) { + switch (pElement->id) { + case SDD_PTA_CFG_ELT_ID: + { + priv->conf_listen_interval = + (*((u16 *)pElement->data+1) >> 7) & 0x1F; + priv->is_BT_Present = true; + sta_printk(KERN_DEBUG "PTA element found.\n"); + sta_printk(KERN_DEBUG "Listen Interval %d\n", + priv->conf_listen_interval); + } + break; + + default: + break; + } + + pElement = (struct cw1200_sdd *) + ((u8 *)pElement + FIELD_OFFSET(struct cw1200_sdd, data) + + pElement->length); + parsedLength += + (FIELD_OFFSET(struct cw1200_sdd, data) + pElement->length); + } + + if (priv->is_BT_Present == false) { + sta_printk(KERN_DEBUG "PTA element NOT found.\n"); + priv->conf_listen_interval = 0; + } + return 0; + + #undef SDD_PTA_CFG_ELT_ID + #undef FIELD_OFFSET +} + + +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, + }; + + /* 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) { + const char *sdd_path = NULL; + struct wsm_configuration cfg = { + .dot11StationId = &priv->mac_addr[0], + }; + + switch (priv->hw_revision) { + case CW1200_HW_REV_CUT10: + sdd_path = SDD_FILE_10; + break; + case CW1200_HW_REV_CUT11: + sdd_path = SDD_FILE_11; + break; + case CW1200_HW_REV_CUT20: + sdd_path = SDD_FILE_20; + break; + case CW1200_HW_REV_CUT22: + sdd_path = SDD_FILE_22; + break; + default: + BUG_ON(1); + } + + ret = request_firmware(&priv->sdd, + sdd_path, priv->pdev); + + if (unlikely(ret)) { + cw1200_dbg(CW1200_DBG_ERROR, + "%s: can't load sdd file %s.\n", + __func__, sdd_path); + return ret; + } + + cfg.dpdData = priv->sdd->data; + cfg.dpdData_size = priv->sdd->size; + ret = WARN_ON(wsm_configuration(priv, &cfg)); + /* Parse SDD file for PTA element */ + cw1200_parse_SDD_file(priv); + } + if (ret) + return ret; + + /* Configure RSSI/SCPI reporting as RSSI. */ + WARN_ON(wsm_set_rcpi_rssi_threshold(priv, &threshold)); + + /* TODO: */ + switch (priv->mode) { + case NL80211_IFTYPE_STATION: + case NL80211_IFTYPE_MONITOR: + case NL80211_IFTYPE_AP: + break; + case NL80211_IFTYPE_ADHOC: + case NL80211_IFTYPE_MESH_POINT: + /* TODO: Not verified yet. */ + STUB(); + break; + } + + return 0; +} + +void cw1200_offchannel_work(struct work_struct *work) +{ + struct cw1200_common *priv = + container_of(work, struct cw1200_common, offchannel_work); + u8 queueId = cw1200_queue_get_queue_id(priv->pending_frame_id); + struct cw1200_queue *queue = &priv->tx_queue[queueId]; + + BUG_ON(queueId >= 4); + BUG_ON(!priv->channel); + + mutex_lock(&priv->conf_mutex); + if (likely(!priv->join_status)) { + wsm_flush_tx(priv); + cw1200_update_listening(priv, true); + cw1200_update_filtering(priv); + } + if (unlikely(!priv->join_status)) + cw1200_queue_remove(queue, priv->pending_frame_id); + else + cw1200_queue_requeue(queue, priv->pending_frame_id); + mutex_unlock(&priv->conf_mutex); + wsm_unlock_tx(priv); +} + +void cw1200_join_work(struct work_struct *work) +{ + struct cw1200_common *priv = + container_of(work, struct cw1200_common, join_work); + u8 queueId = cw1200_queue_get_queue_id(priv->pending_frame_id); + struct cw1200_queue *queue = &priv->tx_queue[queueId]; + const struct cw1200_txpriv *txpriv = NULL; + struct sk_buff *skb = NULL; + const struct wsm_tx *wsm; + const struct ieee80211_hdr *frame; + const u8 *bssid; + struct cfg80211_bss *bss; + const u8 *ssidie; + const u8 *dtimie; + const struct ieee80211_tim_ie *tim = NULL; + struct wsm_protected_mgmt_policy mgmt_policy; + + BUG_ON(queueId >= 4); + if (cw1200_queue_get_skb(queue, priv->pending_frame_id, + &skb, &txpriv)) { + wsm_unlock_tx(priv); + return; + } + wsm = (struct wsm_tx *)&skb->data[0]; + frame = (struct ieee80211_hdr *)&skb->data[txpriv->offset]; + bssid = &frame->addr1[0]; /* AP SSID in a 802.11 frame */ + + BUG_ON(!wsm); + BUG_ON(!priv->channel); + + if (unlikely(priv->join_status)) { + wsm_lock_tx(priv); + cw1200_unjoin_work(&priv->unjoin_work); + } + + cancel_delayed_work_sync(&priv->join_timeout); + + bss = cfg80211_get_bss(priv->hw->wiphy, NULL, bssid, NULL, 0, 0, 0); + if (!bss) { + cw1200_queue_remove(queue, priv->pending_frame_id); + wsm_unlock_tx(priv); + return; + } + ssidie = cfg80211_find_ie(WLAN_EID_SSID, + bss->information_elements, + bss->len_information_elements); + dtimie = cfg80211_find_ie(WLAN_EID_TIM, + bss->information_elements, + bss->len_information_elements); + if (dtimie) + tim = (struct ieee80211_tim_ie *)&dtimie[2]; + + mutex_lock(&priv->conf_mutex); + { + struct wsm_join join = { + .mode = (bss->capability & WLAN_CAPABILITY_IBSS) ? + WSM_JOIN_MODE_IBSS : WSM_JOIN_MODE_BSS, + .preambleType = WSM_JOIN_PREAMBLE_SHORT, + .probeForJoin = 1, + /* dtimPeriod will be updated after association */ + .dtimPeriod = 1, + .beaconInterval = bss->beacon_interval, + /* basicRateSet will be updated after association */ + .basicRateSet = 7, + }; + + /* BT Coex related changes */ + if (priv->is_BT_Present) { + if (((priv->conf_listen_interval * 100) % + bss->beacon_interval) == 0) + priv->listen_interval = + ((priv->conf_listen_interval * 100) / + bss->beacon_interval); + else + priv->listen_interval = + ((priv->conf_listen_interval * 100) / + bss->beacon_interval + 1); + } + + if (tim && tim->dtim_period > 1) { + join.dtimPeriod = tim->dtim_period; + priv->join_dtim_period = tim->dtim_period; + } + priv->beacon_int = bss->beacon_interval; + sta_printk(KERN_DEBUG "[STA] Join DTIM: %d, interval: %d\n", + join.dtimPeriod, priv->beacon_int); + + join.channelNumber = priv->channel->hw_value; + join.band = (priv->channel->band == IEEE80211_BAND_5GHZ) ? + WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G; + + memcpy(&join.bssid[0], bssid, sizeof(join.bssid)); + memcpy(&priv->join_bssid[0], bssid, sizeof(priv->join_bssid)); + + if (ssidie) { + join.ssidLength = ssidie[1]; + if (WARN_ON(join.ssidLength > sizeof(join.ssid))) + join.ssidLength = sizeof(join.ssid); + memcpy(&join.ssid[0], &ssidie[2], join.ssidLength); + } + + if (priv->vif->p2p) { + join.flags |= WSM_JOIN_FLAGS_P2P_GO; + join.basicRateSet = + cw1200_rate_mask_to_wsm(priv, 0xFF0); + } + + wsm_flush_tx(priv); + + /* Queue unjoin if not associated in 3 sec. */ + queue_delayed_work(priv->workqueue, + &priv->join_timeout, 3 * HZ); + /*Stay Awake for Join Timeout*/ + cw1200_pm_stay_awake(&priv->pm_state, 3 * HZ); + + cw1200_update_listening(priv, false); + /* BlockACK policy will be updated when assoc is done */ + WARN_ON(wsm_set_block_ack_policy(priv, + 0, priv->ba_tid_mask)); + + spin_lock_bh(&priv->ba_lock); + priv->ba_ena = false; + priv->ba_cnt = 0; + priv->ba_acc = 0; + priv->ba_hist = 0; + spin_unlock_bh(&priv->ba_lock); + + mgmt_policy.protectedMgmtEnable = 0; + mgmt_policy.unprotectedMgmtFramesAllowed = 1; + mgmt_policy.encryptionForAuthFrame = 1; + wsm_set_protected_mgmt_policy(priv, &mgmt_policy); + + if (wsm_join(priv, &join)) { + memset(&priv->join_bssid[0], + 0, sizeof(priv->join_bssid)); + cw1200_queue_remove(queue, priv->pending_frame_id); + cancel_delayed_work_sync(&priv->join_timeout); + cw1200_update_listening(priv, priv->listening); + } else { + /* Upload keys */ + WARN_ON(cw1200_upload_keys(priv)); + cw1200_queue_requeue(queue, priv->pending_frame_id); + priv->join_status = CW1200_JOIN_STATUS_STA; + + /* 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); + } + mutex_unlock(&priv->conf_mutex); + cfg80211_put_bss(bss); + wsm_unlock_tx(priv); +} + +void cw1200_join_timeout(struct work_struct *work) +{ + struct cw1200_common *priv = + container_of(work, struct cw1200_common, join_timeout.work); + sta_printk(KERN_DEBUG "[WSM] Issue unjoin command (TMO).\n"); + wsm_lock_tx(priv); + cw1200_unjoin_work(&priv->unjoin_work); +} + +void cw1200_unjoin_work(struct work_struct *work) +{ + struct cw1200_common *priv = + container_of(work, struct cw1200_common, unjoin_work); + + struct wsm_reset reset = { + .reset_statistics = true, + }; + + del_timer_sync(&priv->ba_timer); + mutex_lock(&priv->conf_mutex); + if (unlikely(atomic_read(&priv->scan.in_progress))) { + if (priv->delayed_unjoin) { + wiphy_dbg(priv->hw->wiphy, + "%s: Delayed unjoin " + "is already scheduled.\n", + __func__); + wsm_unlock_tx(priv); + } else { + priv->delayed_unjoin = true; + } + mutex_unlock(&priv->conf_mutex); + return; + } + + if (priv->join_status && + priv->join_status > CW1200_JOIN_STATUS_STA) { + wiphy_err(priv->hw->wiphy, + "%s: Unexpected: join status: %d\n", + __func__, priv->join_status); + BUG_ON(1); + } + if (priv->join_status) { + cancel_work_sync(&priv->update_filtering_work); + memset(&priv->join_bssid[0], 0, sizeof(priv->join_bssid)); + priv->join_status = CW1200_JOIN_STATUS_PASSIVE; + + /* Unjoin is a reset. */ + wsm_flush_tx(priv); + WARN_ON(wsm_keep_alive_period(priv, 0)); + WARN_ON(wsm_reset(priv, &reset)); + priv->join_dtim_period = 0; + WARN_ON(cw1200_setup_mac(priv)); + cw1200_free_event_queue(priv); + cancel_work_sync(&priv->event_handler); + cancel_delayed_work_sync(&priv->connection_loss_work); + cw1200_update_listening(priv, priv->listening); + WARN_ON(wsm_set_block_ack_policy(priv, + 0, priv->ba_tid_mask)); + priv->disable_beacon_filter = false; + cw1200_update_filtering(priv); + priv->setbssparams_done = false; + memset(&priv->association_mode, 0, + sizeof(priv->association_mode)); + memset(&priv->bss_params, 0, sizeof(priv->bss_params)); + memset(&priv->firmware_ps_mode, 0, + sizeof(priv->firmware_ps_mode)); + sta_printk(KERN_DEBUG "[STA] Unjoin.\n"); + } + mutex_unlock(&priv->conf_mutex); + wsm_unlock_tx(priv); +} + +int cw1200_enable_listening(struct cw1200_common *priv) +{ + struct wsm_start start = { + .mode = WSM_START_MODE_P2P_DEV, + .band = (priv->channel->band == IEEE80211_BAND_5GHZ) ? + WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G, + .channelNumber = priv->channel->hw_value, + .beaconInterval = 100, + .DTIMPeriod = 1, + .probeDelay = 0, + .basicRateSet = 0x0F, + }; + 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) { + switch (priv->join_status) { + case CW1200_JOIN_STATUS_PASSIVE: + if (!WARN_ON(cw1200_enable_listening(priv))) + priv->join_status = CW1200_JOIN_STATUS_MONITOR; + break; + default: + break; + } + } else { + switch (priv->join_status) { + case CW1200_JOIN_STATUS_MONITOR: + if (!WARN_ON(cw1200_disable_listening(priv))) + priv->join_status = CW1200_JOIN_STATUS_PASSIVE; + default: + break; + } + } +} + +int cw1200_set_uapsd_param(struct cw1200_common *priv, + const struct wsm_edca_params *arg) +{ + int ret; + u16 uapsdFlags = 0; + + /* Here's the mapping AC [queue, bit] + VO [0,3], VI [1, 2], BE [2, 1], BK [3, 0]*/ + + if (arg->params[0].uapsdEnable) + uapsdFlags |= 1 << 3; + + if (arg->params[1].uapsdEnable) + uapsdFlags |= 1 << 2; + + if (arg->params[2].uapsdEnable) + uapsdFlags |= 1 << 1; + + if (arg->params[3].uapsdEnable) + uapsdFlags |= 1; + + /* Currently pseudo U-APSD operation is not supported, so setting + * MinAutoTriggerInterval, MaxAutoTriggerInterval and + * AutoTriggerStep to 0 */ + + priv->uapsd_info.uapsdFlags = cpu_to_le16(uapsdFlags); + priv->uapsd_info.minAutoTriggerInterval = 0; + priv->uapsd_info.maxAutoTriggerInterval = 0; + priv->uapsd_info.autoTriggerStep = 0; + + ret = wsm_set_uapsd_info(priv, &priv->uapsd_info); + return ret; +} + +void cw1200_ba_work(struct work_struct *work) +{ + struct cw1200_common *priv = + container_of(work, struct cw1200_common, ba_work); + u8 tx_ba_tid_mask; + + if (priv->join_status != CW1200_JOIN_STATUS_STA) + return; + if (!priv->setbssparams_done) + return; + + spin_lock_bh(&priv->ba_lock); + tx_ba_tid_mask = priv->ba_ena ? priv->ba_tid_mask : 0; + spin_unlock_bh(&priv->ba_lock); + + WARN_ON(wsm_set_block_ack_policy(priv, + tx_ba_tid_mask, priv->ba_tid_mask)); +} + +void cw1200_ba_timer(unsigned long arg) +{ + bool ba_ena; + struct cw1200_common *priv = + (struct cw1200_common *)arg; + + spin_lock_bh(&priv->ba_lock); + cw1200_debug_ba(priv, priv->ba_cnt, priv->ba_acc); + + if (atomic_read(&priv->scan.in_progress)) + goto skip_statistic_update; + + ba_ena = (priv->ba_cnt >= CW1200_BLOCK_ACK_CNT && + priv->ba_acc / priv->ba_cnt >= CW1200_BLOCK_ACK_THLD); + priv->ba_cnt = 0; + priv->ba_acc = 0; + + if (ba_ena != priv->ba_ena) { + if (ba_ena || ++priv->ba_hist >= CW1200_BLOCK_ACK_HIST) { + priv->ba_ena = ba_ena; + priv->ba_hist = 0; + sta_printk(KERN_DEBUG "[STA] %s block ACK:\n", + ba_ena ? "enable" : "disable"); + queue_work(priv->workqueue, &priv->ba_work); + } + } else if (priv->ba_hist) + --priv->ba_hist; + +skip_statistic_update: + spin_unlock_bh(&priv->ba_lock); +} |