| /* |
| * 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->rts_threshold == value) |
| goto out; |
| |
| pr_debug("[STA] Setting RTS threshold: %d\n", |
| priv->rts_threshold); |
| |
| /* mutex_lock(&priv->conf_mutex); */ |
| ret = wsm_write_mib(priv, WSM_MIB_ID_DOT11_RTS_THRESHOLD, |
| &val32, sizeof(val32)); |
| if (!ret) |
| priv->rts_threshold = value; |
| /* mutex_unlock(&priv->conf_mutex); */ |
| |
| out: |
| return ret; |
| } |
| |
| /* If successful, LOCKS the TX queue! */ |
| static int __cw1200_flush(struct cw1200_common *priv, bool drop) |
| { |
| int i, ret; |
| |
| for (;;) { |
| /* TODO: correct flush handling is required when dev_stop. |
| * Temporary workaround: 2s |
| */ |
| if (drop) { |
| for (i = 0; i < 4; ++i) |
| cw1200_queue_clear(&priv->tx_queue[i]); |
| } else { |
| ret = wait_event_timeout( |
| priv->tx_queue_stats.wait_link_id_empty, |
| cw1200_queue_stats_is_empty( |
| &priv->tx_queue_stats, -1), |
| 2 * HZ); |
| } |
| |
| if (!drop && ret <= 0) { |
| ret = -ETIMEDOUT; |
| break; |
| } else { |
| ret = 0; |
| } |
| |
| wsm_lock_tx(priv); |
| if (!cw1200_queue_stats_is_empty(&priv->tx_queue_stats, -1)) { |
| /* Highly unlikely: WSM requeued frames. */ |
| wsm_unlock_tx(priv); |
| continue; |
| } |
| break; |
| } |
| return ret; |
| } |
| |
| void cw1200_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
| u32 queues, bool drop) |
| { |
| struct cw1200_common *priv = hw->priv; |
| |
| switch (priv->mode) { |
| case NL80211_IFTYPE_MONITOR: |
| drop = true; |
| break; |
| case NL80211_IFTYPE_AP: |
| if (!priv->enable_beacon) |
| drop = true; |
| break; |
| } |
| |
| if (!__cw1200_flush(priv, drop)) |
| wsm_unlock_tx(priv); |
| |
| return; |
| } |
| |
| /* ******************************************************************** */ |
| /* WSM callbacks */ |
| |
| void cw1200_free_event_queue(struct cw1200_common *priv) |
| { |
| LIST_HEAD(list); |
| |
| spin_lock(&priv->event_queue_lock); |
| list_splice_init(&priv->event_queue, &list); |
| spin_unlock(&priv->event_queue_lock); |
| |
| __cw1200_free_event_queue(&list); |
| } |
| |
| void cw1200_event_handler(struct work_struct *work) |
| { |
| struct cw1200_common *priv = |
| container_of(work, struct cw1200_common, event_handler); |
| struct cw1200_wsm_event *event; |
| LIST_HEAD(list); |
| |
| spin_lock(&priv->event_queue_lock); |
| list_splice_init(&priv->event_queue, &list); |
| spin_unlock(&priv->event_queue_lock); |
| |
| list_for_each_entry(event, &list, link) { |
| switch (event->evt.id) { |
| case WSM_EVENT_ERROR: |
| pr_err("Unhandled WSM Error from LMAC\n"); |
| break; |
| case WSM_EVENT_BSS_LOST: |
| pr_debug("[CQM] BSS lost.\n"); |
| cancel_work_sync(&priv->unjoin_work); |
| if (!down_trylock(&priv->scan.lock)) { |
| cw1200_cqm_bssloss_sm(priv, 1, 0, 0); |
| up(&priv->scan.lock); |
| } else { |
| /* Scan is in progress. Delay reporting. |
| * Scan complete will trigger bss_loss_work |
| */ |
| priv->delayed_link_loss = 1; |
| /* Also start a watchdog. */ |
| queue_delayed_work(priv->workqueue, |
| &priv->bss_loss_work, 5*HZ); |
| } |
| break; |
| case WSM_EVENT_BSS_REGAINED: |
| pr_debug("[CQM] BSS regained.\n"); |
| cw1200_cqm_bssloss_sm(priv, 0, 0, 0); |
| cancel_work_sync(&priv->unjoin_work); |
| break; |
| case WSM_EVENT_RADAR_DETECTED: |
| wiphy_info(priv->hw->wiphy, "radar pulse detected\n"); |
| break; |
| case WSM_EVENT_RCPI_RSSI: |
| { |
| /* RSSI: signed Q8.0, RCPI: unsigned Q7.1 |
| * RSSI = RCPI / 2 - 110 |
| */ |
| int rcpi_rssi = (int)(event->evt.data & 0xFF); |
| int cqm_evt; |
| if (priv->cqm_use_rssi) |
| rcpi_rssi = (s8)rcpi_rssi; |
| else |
| rcpi_rssi = rcpi_rssi / 2 - 110; |
| |
| cqm_evt = (rcpi_rssi <= priv->cqm_rssi_thold) ? |
| NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW : |
| NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH; |
| pr_debug("[CQM] RSSI event: %d.\n", rcpi_rssi); |
| ieee80211_cqm_rssi_notify(priv->vif, cqm_evt, rcpi_rssi, |
| GFP_KERNEL); |
| break; |
| } |
| case WSM_EVENT_BT_INACTIVE: |
| pr_warn("Unhandled BT INACTIVE from LMAC\n"); |
| break; |
| case WSM_EVENT_BT_ACTIVE: |
| pr_warn("Unhandled BT ACTIVE from LMAC\n"); |
| break; |
| } |
| } |
| __cw1200_free_event_queue(&list); |
| } |
| |
| void cw1200_bss_loss_work(struct work_struct *work) |
| { |
| struct cw1200_common *priv = |
| container_of(work, struct cw1200_common, bss_loss_work.work); |
| |
| pr_debug("[CQM] Reporting connection loss.\n"); |
| wsm_lock_tx(priv); |
| if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0) |
| wsm_unlock_tx(priv); |
| } |
| |
| void cw1200_bss_params_work(struct work_struct *work) |
| { |
| struct cw1200_common *priv = |
| container_of(work, struct cw1200_common, bss_params_work); |
| mutex_lock(&priv->conf_mutex); |
| |
| priv->bss_params.reset_beacon_loss = 1; |
| wsm_set_bss_params(priv, &priv->bss_params); |
| priv->bss_params.reset_beacon_loss = 0; |
| |
| mutex_unlock(&priv->conf_mutex); |
| } |
| |
| /* ******************************************************************** */ |
| /* Internal API */ |
| |
| /* This function is called to Parse the SDD file |
| * to extract listen_interval and PTA related information |
| * sdd is a TLV: u8 id, u8 len, u8 data[] |
| */ |
| static int cw1200_parse_sdd_file(struct cw1200_common *priv) |
| { |
| const u8 *p = priv->sdd->data; |
| int ret = 0; |
| |
| while (p + 2 <= priv->sdd->data + priv->sdd->size) { |
| if (p + p[1] + 2 > priv->sdd->data + priv->sdd->size) { |
| pr_warn("Malformed sdd structure\n"); |
| return -1; |
| } |
| switch (p[0]) { |
| case SDD_PTA_CFG_ELT_ID: { |
| u16 v; |
| if (p[1] < 4) { |
| pr_warn("SDD_PTA_CFG_ELT_ID malformed\n"); |
| ret = -1; |
| break; |
| } |
| v = le16_to_cpu(*((__le16 *)(p + 2))); |
| if (!v) /* non-zero means this is enabled */ |
| break; |
| |
| v = le16_to_cpu(*((__le16 *)(p + 4))); |
| priv->conf_listen_interval = (v >> 7) & 0x1F; |
| pr_debug("PTA found; Listen Interval %d\n", |
| priv->conf_listen_interval); |
| break; |
| } |
| case SDD_REFERENCE_FREQUENCY_ELT_ID: { |
| u16 clk = le16_to_cpu(*((__le16 *)(p + 2))); |
| if (clk != priv->hw_refclk) |
| pr_warn("SDD file doesn't match configured refclk (%d vs %d)\n", |
| clk, priv->hw_refclk); |
| break; |
| } |
| default: |
| break; |
| } |
| p += p[1] + 2; |
| } |
| |
| if (!priv->bt_present) { |
| pr_debug("PTA element NOT found.\n"); |
| priv->conf_listen_interval = 0; |
| } |
| return ret; |
| } |
| |
| int cw1200_setup_mac(struct cw1200_common *priv) |
| { |
| int ret = 0; |
| |
| /* NOTE: There is a bug in FW: it reports signal |
| * as RSSI if RSSI subscription is enabled. |
| * It's not enough to set WSM_RCPI_RSSI_USE_RSSI. |
| * |
| * NOTE2: RSSI based reports have been switched to RCPI, since |
| * FW has a bug and RSSI reported values are not stable, |
| * what can leads to signal level oscilations in user-end applications |
| */ |
| struct wsm_rcpi_rssi_threshold threshold = { |
| .rssiRcpiMode = WSM_RCPI_RSSI_THRESHOLD_ENABLE | |
| WSM_RCPI_RSSI_DONT_USE_UPPER | |
| WSM_RCPI_RSSI_DONT_USE_LOWER, |
| .rollingAverageCount = 16, |
| }; |
| |
| struct wsm_configuration cfg = { |
| .dot11StationId = &priv->mac_addr[0], |
| }; |
| |
| /* Remember the decission here to make sure, we will handle |
| * the RCPI/RSSI value correctly on WSM_EVENT_RCPI_RSS |
| */ |
| if (threshold.rssiRcpiMode & WSM_RCPI_RSSI_USE_RSSI) |
| priv->cqm_use_rssi = true; |
| |
| if (!priv->sdd) { |
| ret = request_firmware(&priv->sdd, priv->sdd_path, priv->pdev); |
| if (ret) { |
| pr_err("Can't load sdd file %s.\n", priv->sdd_path); |
| return ret; |
| } |
| cw1200_parse_sdd_file(priv); |
| } |
| |
| cfg.dpdData = priv->sdd->data; |
| cfg.dpdData_size = priv->sdd->size; |
| ret = wsm_configuration(priv, &cfg); |
| if (ret) |
| return ret; |
| |
| /* Configure RSSI/SCPI reporting as RSSI. */ |
| wsm_set_rcpi_rssi_threshold(priv, &threshold); |
| |
| return 0; |
| } |
| |
| static void cw1200_join_complete(struct cw1200_common *priv) |
| { |
| pr_debug("[STA] Join complete (%d)\n", priv->join_complete_status); |
| |
| priv->join_pending = false; |
| if (priv->join_complete_status) { |
| priv->join_status = CW1200_JOIN_STATUS_PASSIVE; |
| cw1200_update_listening(priv, priv->listening); |
| cw1200_do_unjoin(priv); |
| ieee80211_connection_loss(priv->vif); |
| } else { |
| if (priv->mode == NL80211_IFTYPE_ADHOC) |
| priv->join_status = CW1200_JOIN_STATUS_IBSS; |
| else |
| priv->join_status = CW1200_JOIN_STATUS_PRE_STA; |
| } |
| wsm_unlock_tx(priv); /* Clearing the lock held before do_join() */ |
| } |
| |
| void cw1200_join_complete_work(struct work_struct *work) |
| { |
| struct cw1200_common *priv = |
| container_of(work, struct cw1200_common, join_complete_work); |
| mutex_lock(&priv->conf_mutex); |
| cw1200_join_complete(priv); |
| mutex_unlock(&priv->conf_mutex); |
| } |
| |
| void cw1200_join_complete_cb(struct cw1200_common *priv, |
| struct wsm_join_complete *arg) |
| { |
| pr_debug("[STA] cw1200_join_complete_cb called, status=%d.\n", |
| arg->status); |
| |
| if (cancel_delayed_work(&priv->join_timeout)) { |
| priv->join_complete_status = arg->status; |
| queue_work(priv->workqueue, &priv->join_complete_work); |
| } |
| } |
| |
| /* MUST be called with tx_lock held! It will be unlocked for us. */ |
| static void cw1200_do_join(struct cw1200_common *priv) |
| { |
| const u8 *bssid; |
| struct ieee80211_bss_conf *conf = &priv->vif->bss_conf; |
| struct cfg80211_bss *bss = NULL; |
| struct wsm_protected_mgmt_policy mgmt_policy; |
| struct wsm_join join = { |
| .mode = conf->ibss_joined ? |
| WSM_JOIN_MODE_IBSS : WSM_JOIN_MODE_BSS, |
| .preamble_type = WSM_JOIN_PREAMBLE_LONG, |
| .probe_for_join = 1, |
| .atim_window = 0, |
| .basic_rate_set = cw1200_rate_mask_to_wsm(priv, |
| conf->basic_rates), |
| }; |
| if (delayed_work_pending(&priv->join_timeout)) { |
| pr_warn("[STA] - Join request already pending, skipping..\n"); |
| wsm_unlock_tx(priv); |
| return; |
| } |
| |
| if (priv->join_status) |
| cw1200_do_unjoin(priv); |
| |
| bssid = priv->vif->bss_conf.bssid; |
| |
| bss = cfg80211_get_bss(priv->hw->wiphy, priv->channel, bssid, NULL, 0, |
| IEEE80211_BSS_TYPE_ANY, IEEE80211_PRIVACY_ANY); |
| |
| if (!bss && !conf->ibss_joined) { |
| wsm_unlock_tx(priv); |
| return; |
| } |
| |
| mutex_lock(&priv->conf_mutex); |
| |
| /* Under the conf lock: check scan status and |
| * bail out if it is in progress. |
| */ |
| if (atomic_read(&priv->scan.in_progress)) { |
| wsm_unlock_tx(priv); |
| goto done_put; |
| } |
| |
| priv->join_pending = true; |
| |
| /* Sanity check basic rates */ |
| if (!join.basic_rate_set) |
| join.basic_rate_set = 7; |
| |
| /* Sanity check beacon interval */ |
| if (!priv->beacon_int) |
| priv->beacon_int = 1; |
| |
| join.beacon_interval = priv->beacon_int; |
| |
| /* BT Coex related changes */ |
| if (priv->bt_present) { |
| if (((priv->conf_listen_interval * 100) % |
| priv->beacon_int) == 0) |
| priv->listen_interval = |
| ((priv->conf_listen_interval * 100) / |
| priv->beacon_int); |
| else |
| priv->listen_interval = |
| ((priv->conf_listen_interval * 100) / |
| priv->beacon_int + 1); |
| } |
| |
| if (priv->hw->conf.ps_dtim_period) |
| priv->join_dtim_period = priv->hw->conf.ps_dtim_period; |
| join.dtim_period = priv->join_dtim_period; |
| |
| join.channel_number = priv->channel->hw_value; |
| join.band = (priv->channel->band == NL80211_BAND_5GHZ) ? |
| WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G; |
| |
| memcpy(join.bssid, bssid, sizeof(join.bssid)); |
| |
| pr_debug("[STA] Join BSSID: %pM DTIM: %d, interval: %d\n", |
| join.bssid, |
| join.dtim_period, priv->beacon_int); |
| |
| if (!conf->ibss_joined) { |
| const u8 *ssidie; |
| rcu_read_lock(); |
| ssidie = ieee80211_bss_get_ie(bss, WLAN_EID_SSID); |
| if (ssidie) { |
| join.ssid_len = ssidie[1]; |
| memcpy(join.ssid, &ssidie[2], join.ssid_len); |
| } |
| rcu_read_unlock(); |
| } |
| |
| if (priv->vif->p2p) { |
| join.flags |= WSM_JOIN_FLAGS_P2P_GO; |
| join.basic_rate_set = |
| cw1200_rate_mask_to_wsm(priv, 0xFF0); |
| } |
| |
| /* Enable asynchronous join calls */ |
| if (!conf->ibss_joined) { |
| join.flags |= WSM_JOIN_FLAGS_FORCE; |
| join.flags |= WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND; |
| } |
| |
| wsm_flush_tx(priv); |
| |
| /* Stay Awake for Join and Auth Timeouts and a bit more */ |
| cw1200_pm_stay_awake(&priv->pm_state, |
| CW1200_JOIN_TIMEOUT + CW1200_AUTH_TIMEOUT); |
| |
| cw1200_update_listening(priv, false); |
| |
| /* Turn on Block ACKs */ |
| wsm_set_block_ack_policy(priv, priv->ba_tx_tid_mask, |
| priv->ba_rx_tid_mask); |
| |
| /* Set up timeout */ |
| if (join.flags & WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND) { |
| priv->join_status = CW1200_JOIN_STATUS_JOINING; |
| queue_delayed_work(priv->workqueue, |
| &priv->join_timeout, |
| CW1200_JOIN_TIMEOUT); |
| } |
| |
| /* 802.11w protected mgmt frames */ |
| mgmt_policy.protectedMgmtEnable = 0; |
| mgmt_policy.unprotectedMgmtFramesAllowed = 1; |
| mgmt_policy.encryptionForAuthFrame = 1; |
| wsm_set_protected_mgmt_policy(priv, &mgmt_policy); |
| |
| /* Perform actual join */ |
| if (wsm_join(priv, &join)) { |
| pr_err("[STA] cw1200_join_work: wsm_join failed!\n"); |
| cancel_delayed_work_sync(&priv->join_timeout); |
| cw1200_update_listening(priv, priv->listening); |
| /* Tx lock still held, unjoin will clear it. */ |
| if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0) |
| wsm_unlock_tx(priv); |
| } else { |
| if (!(join.flags & WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND)) |
| cw1200_join_complete(priv); /* Will clear tx_lock */ |
| |
| /* Upload keys */ |
| cw1200_upload_keys(priv); |
| |
| /* Due to beacon filtering it is possible that the |
| * AP's beacon is not known for the mac80211 stack. |
| * Disable filtering temporary to make sure the stack |
| * receives at least one |
| */ |
| priv->disable_beacon_filter = true; |
| } |
| cw1200_update_filtering(priv); |
| |
| done_put: |
| mutex_unlock(&priv->conf_mutex); |
| if (bss) |
| cfg80211_put_bss(priv->hw->wiphy, bss); |
| } |
| |
| void cw1200_join_timeout(struct work_struct *work) |
| { |
| struct cw1200_common *priv = |
| container_of(work, struct cw1200_common, join_timeout.work); |
| pr_debug("[WSM] Join timed out.\n"); |
| wsm_lock_tx(priv); |
| if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0) |
| wsm_unlock_tx(priv); |
| } |
| |
| static void cw1200_do_unjoin(struct cw1200_common *priv) |
| { |
| struct wsm_reset reset = { |
| .reset_statistics = true, |
| }; |
| |
| cancel_delayed_work_sync(&priv->join_timeout); |
| |
| mutex_lock(&priv->conf_mutex); |
| priv->join_pending = false; |
| |
| if (atomic_read(&priv->scan.in_progress)) { |
| if (priv->delayed_unjoin) |
| wiphy_dbg(priv->hw->wiphy, "Delayed unjoin is already scheduled.\n"); |
| else |
| priv->delayed_unjoin = true; |
| goto done; |
| } |
| |
| priv->delayed_link_loss = false; |
| |
| if (!priv->join_status) |
| goto done; |
| |
| if (priv->join_status == CW1200_JOIN_STATUS_AP) |
| goto done; |
| |
| cancel_work_sync(&priv->update_filtering_work); |
| cancel_work_sync(&priv->set_beacon_wakeup_period_work); |
| priv->join_status = CW1200_JOIN_STATUS_PASSIVE; |
| |
| /* Unjoin is a reset. */ |
| wsm_flush_tx(priv); |
| wsm_keep_alive_period(priv, 0); |
| wsm_reset(priv, &reset); |
| wsm_set_output_power(priv, priv->output_power * 10); |
| priv->join_dtim_period = 0; |
| cw1200_setup_mac(priv); |
| cw1200_free_event_queue(priv); |
| cancel_work_sync(&priv->event_handler); |
| cw1200_update_listening(priv, priv->listening); |
| cw1200_cqm_bssloss_sm(priv, 0, 0, 0); |
| |
| /* Disable Block ACKs */ |
| wsm_set_block_ack_policy(priv, 0, 0); |
| |
| priv->disable_beacon_filter = false; |
| cw1200_update_filtering(priv); |
| memset(&priv->association_mode, 0, |
| sizeof(priv->association_mode)); |
| memset(&priv->bss_params, 0, sizeof(priv->bss_params)); |
| priv->setbssparams_done = false; |
| memset(&priv->firmware_ps_mode, 0, |
| sizeof(priv->firmware_ps_mode)); |
| |
| pr_debug("[STA] Unjoin completed.\n"); |
| |
| done: |
| mutex_unlock(&priv->conf_mutex); |
| } |
| |
| void cw1200_unjoin_work(struct work_struct *work) |
| { |
| struct cw1200_common *priv = |
| container_of(work, struct cw1200_common, unjoin_work); |
| |
| cw1200_do_unjoin(priv); |
| |
| /* Tell the stack we're dead */ |
| ieee80211_connection_loss(priv->vif); |
| |
| wsm_unlock_tx(priv); |
| } |
| |
| int cw1200_enable_listening(struct cw1200_common *priv) |
| { |
| struct wsm_start start = { |
| .mode = WSM_START_MODE_P2P_DEV, |
| .band = WSM_PHY_BAND_2_4G, |
| .beacon_interval = 100, |
| .dtim_period = 1, |
| .probe_delay = 0, |
| .basic_rate_set = 0x0F, |
| }; |
| |
| if (priv->channel) { |
| start.band = priv->channel->band == NL80211_BAND_5GHZ ? |
| WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G; |
| start.channel_number = priv->channel->hw_value; |
| } else { |
| start.band = WSM_PHY_BAND_2_4G; |
| start.channel_number = 1; |
| } |
| |
| return wsm_start(priv, &start); |
| } |
| |
| int cw1200_disable_listening(struct cw1200_common *priv) |
| { |
| int ret; |
| struct wsm_reset reset = { |
| .reset_statistics = true, |
| }; |
| ret = wsm_reset(priv, &reset); |
| return ret; |
| } |
| |
| void cw1200_update_listening(struct cw1200_common *priv, bool enabled) |
| { |
| if (enabled) { |
| if (priv->join_status == CW1200_JOIN_STATUS_PASSIVE) { |
| if (!cw1200_enable_listening(priv)) |
| priv->join_status = CW1200_JOIN_STATUS_MONITOR; |
| wsm_set_probe_responder(priv, true); |
| } |
| } else { |
| if (priv->join_status == CW1200_JOIN_STATUS_MONITOR) { |
| if (!cw1200_disable_listening(priv)) |
| priv->join_status = CW1200_JOIN_STATUS_PASSIVE; |
| wsm_set_probe_responder(priv, false); |
| } |
| } |
| } |
| |
| int cw1200_set_uapsd_param(struct cw1200_common *priv, |
| const struct wsm_edca_params *arg) |
| { |
| int ret; |
| u16 uapsd_flags = 0; |
| |
| /* Here's the mapping AC [queue, bit] |
| * VO [0,3], VI [1, 2], BE [2, 1], BK [3, 0] |
| */ |
| |
| if (arg->uapsd_enable[0]) |
| uapsd_flags |= 1 << 3; |
| |
| if (arg->uapsd_enable[1]) |
| uapsd_flags |= 1 << 2; |
| |
| if (arg->uapsd_enable[2]) |
| uapsd_flags |= 1 << 1; |
| |
| if (arg->uapsd_enable[3]) |
| uapsd_flags |= 1; |
| |
| /* Currently pseudo U-APSD operation is not supported, so setting |
| * MinAutoTriggerInterval, MaxAutoTriggerInterval and |
| * AutoTriggerStep to 0 |
| */ |
| |
| priv->uapsd_info.uapsd_flags = cpu_to_le16(uapsd_flags); |
| priv->uapsd_info.min_auto_trigger_interval = 0; |
| priv->uapsd_info.max_auto_trigger_interval = 0; |
| priv->uapsd_info.auto_trigger_step = 0; |
| |
| ret = wsm_set_uapsd_info(priv, &priv->uapsd_info); |
| return ret; |
| } |
| |
| /* ******************************************************************** */ |
| /* AP API */ |
| |
| int cw1200_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
| struct ieee80211_sta *sta) |
| { |
| struct cw1200_common *priv = hw->priv; |
| struct cw1200_sta_priv *sta_priv = |
| (struct cw1200_sta_priv *)&sta->drv_priv; |
| struct cw1200_link_entry *entry; |
| struct sk_buff *skb; |
| |
| if (priv->mode != NL80211_IFTYPE_AP) |
| return 0; |
| |
| sta_priv->link_id = cw1200_find_link_id(priv, sta->addr); |
| if (WARN_ON(!sta_priv->link_id)) { |
| wiphy_info(priv->hw->wiphy, |
| "[AP] No more link IDs available.\n"); |
| return -ENOENT; |
| } |
| |
| entry = &priv->link_id_db[sta_priv->link_id - 1]; |
| spin_lock_bh(&priv->ps_state_lock); |
| if ((sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) == |
| IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) |
| priv->sta_asleep_mask |= BIT(sta_priv->link_id); |
| entry->status = CW1200_LINK_HARD; |
| while ((skb = skb_dequeue(&entry->rx_queue))) |
| ieee80211_rx_irqsafe(priv->hw, skb); |
| spin_unlock_bh(&priv->ps_state_lock); |
| return 0; |
| } |
| |
| int cw1200_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
| struct ieee80211_sta *sta) |
| { |
| struct cw1200_common *priv = hw->priv; |
| struct cw1200_sta_priv *sta_priv = |
| (struct cw1200_sta_priv *)&sta->drv_priv; |
| struct cw1200_link_entry *entry; |
| |
| if (priv->mode != NL80211_IFTYPE_AP || !sta_priv->link_id) |
| return 0; |
| |
| entry = &priv->link_id_db[sta_priv->link_id - 1]; |
| spin_lock_bh(&priv->ps_state_lock); |
| entry->status = CW1200_LINK_RESERVE; |
| entry->timestamp = jiffies; |
| wsm_lock_tx_async(priv); |
| if (queue_work(priv->workqueue, &priv->link_id_work) <= 0) |
| wsm_unlock_tx(priv); |
| spin_unlock_bh(&priv->ps_state_lock); |
| flush_workqueue(priv->workqueue); |
| return 0; |
| } |
| |
| static void __cw1200_sta_notify(struct ieee80211_hw *dev, |
| struct ieee80211_vif *vif, |
| enum sta_notify_cmd notify_cmd, |
| int link_id) |
| { |
| struct cw1200_common *priv = dev->priv; |
| u32 bit, prev; |
| |
| /* Zero link id means "for all link IDs" */ |
| if (link_id) |
| bit = BIT(link_id); |
| else if (WARN_ON_ONCE(notify_cmd != STA_NOTIFY_AWAKE)) |
| bit = 0; |
| else |
| bit = priv->link_id_map; |
| prev = priv->sta_asleep_mask & bit; |
| |
| switch (notify_cmd) { |
| case STA_NOTIFY_SLEEP: |
| if (!prev) { |
| if (priv->buffered_multicasts && |
| !priv->sta_asleep_mask) |
| queue_work(priv->workqueue, |
| &priv->multicast_start_work); |
| priv->sta_asleep_mask |= bit; |
| } |
| break; |
| case STA_NOTIFY_AWAKE: |
| if (prev) { |
| priv->sta_asleep_mask &= ~bit; |
| priv->pspoll_mask &= ~bit; |
| if (priv->tx_multicast && link_id && |
| !priv->sta_asleep_mask) |
| queue_work(priv->workqueue, |
| &priv->multicast_stop_work); |
| cw1200_bh_wakeup(priv); |
| } |
| break; |
| } |
| } |
| |
| void cw1200_sta_notify(struct ieee80211_hw *dev, |
| struct ieee80211_vif *vif, |
| enum sta_notify_cmd notify_cmd, |
| struct ieee80211_sta *sta) |
| { |
| struct cw1200_common *priv = dev->priv; |
| struct cw1200_sta_priv *sta_priv = |
| (struct cw1200_sta_priv *)&sta->drv_priv; |
| |
| spin_lock_bh(&priv->ps_state_lock); |
| __cw1200_sta_notify(dev, vif, notify_cmd, sta_priv->link_id); |
| spin_unlock_bh(&priv->ps_state_lock); |
| } |
| |
| static void cw1200_ps_notify(struct cw1200_common *priv, |
| int link_id, bool ps) |
| { |
| if (link_id > CW1200_MAX_STA_IN_AP_MODE) |
| return; |
| |
| pr_debug("%s for LinkId: %d. STAs asleep: %.8X\n", |
| ps ? "Stop" : "Start", |
| link_id, priv->sta_asleep_mask); |
| |
| __cw1200_sta_notify(priv->hw, priv->vif, |
| ps ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, link_id); |
| } |
| |
| static int cw1200_set_tim_impl(struct cw1200_common *priv, bool aid0_bit_set) |
| { |
| struct sk_buff *skb; |
| struct wsm_update_ie update_ie = { |
| .what = WSM_UPDATE_IE_BEACON, |
| .count = 1, |
| }; |
| u16 tim_offset, tim_length; |
| |
| pr_debug("[AP] mcast: %s.\n", aid0_bit_set ? "ena" : "dis"); |
| |
| skb = ieee80211_beacon_get_tim(priv->hw, priv->vif, |
| &tim_offset, &tim_length); |
| if (!skb) { |
| if (!__cw1200_flush(priv, true)) |
| wsm_unlock_tx(priv); |
| return -ENOENT; |
| } |
| |
| if (tim_offset && tim_length >= 6) { |
| /* Ignore DTIM count from mac80211: |
| * firmware handles DTIM internally. |
| */ |
| skb->data[tim_offset + 2] = 0; |
| |
| /* Set/reset aid0 bit */ |
| if (aid0_bit_set) |
| skb->data[tim_offset + 4] |= 1; |
| else |
| skb->data[tim_offset + 4] &= ~1; |
| } |
| |
| update_ie.ies = &skb->data[tim_offset]; |
| update_ie.length = tim_length; |
| wsm_update_ie(priv, &update_ie); |
| |
| dev_kfree_skb(skb); |
| |
| return 0; |
| } |
| |
| void cw1200_set_tim_work(struct work_struct *work) |
| { |
| struct cw1200_common *priv = |
| container_of(work, struct cw1200_common, set_tim_work); |
| (void)cw1200_set_tim_impl(priv, priv->aid0_bit_set); |
| } |
| |
| int cw1200_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta, |
| bool set) |
| { |
| struct cw1200_common *priv = dev->priv; |
| queue_work(priv->workqueue, &priv->set_tim_work); |
| return 0; |
| } |
| |
| void cw1200_set_cts_work(struct work_struct *work) |
| { |
| struct cw1200_common *priv = |
| container_of(work, struct cw1200_common, set_cts_work); |
| |
| u8 erp_ie[3] = {WLAN_EID_ERP_INFO, 0x1, 0}; |
| struct wsm_update_ie update_ie = { |
| .what = WSM_UPDATE_IE_BEACON, |
| .count = 1, |
| .ies = erp_ie, |
| .length = 3, |
| }; |
| u32 erp_info; |
| __le32 use_cts_prot; |
| mutex_lock(&priv->conf_mutex); |
| erp_info = priv->erp_info; |
| mutex_unlock(&priv->conf_mutex); |
| use_cts_prot = |
| erp_info & WLAN_ERP_USE_PROTECTION ? |
| __cpu_to_le32(1) : 0; |
| |
| erp_ie[ERP_INFO_BYTE_OFFSET] = erp_info; |
| |
| pr_debug("[STA] ERP information 0x%x\n", erp_info); |
| |
| wsm_write_mib(priv, WSM_MIB_ID_NON_ERP_PROTECTION, |
| &use_cts_prot, sizeof(use_cts_prot)); |
| wsm_update_ie(priv, &update_ie); |
| |
| return; |
| } |
| |
| static int cw1200_set_btcoexinfo(struct cw1200_common *priv) |
| { |
| struct wsm_override_internal_txrate arg; |
| int ret = 0; |
| |
| if (priv->mode == NL80211_IFTYPE_STATION) { |
| /* Plumb PSPOLL and NULL template */ |
| cw1200_upload_pspoll(priv); |
| cw1200_upload_null(priv); |
| cw1200_upload_qosnull(priv); |
| } else { |
| return 0; |
| } |
| |
| memset(&arg, 0, sizeof(struct wsm_override_internal_txrate)); |
| |
| if (!priv->vif->p2p) { |
| /* STATION mode */ |
| if (priv->bss_params.operational_rate_set & ~0xF) { |
| pr_debug("[STA] STA has ERP rates\n"); |
| /* G or BG mode */ |
| arg.internalTxRate = (__ffs( |
| priv->bss_params.operational_rate_set & ~0xF)); |
| } else { |
| pr_debug("[STA] STA has non ERP rates\n"); |
| /* B only mode */ |
| arg.internalTxRate = (__ffs(le32_to_cpu(priv->association_mode.basic_rate_set))); |
| } |
| arg.nonErpInternalTxRate = (__ffs(le32_to_cpu(priv->association_mode.basic_rate_set))); |
| } else { |
| /* P2P mode */ |
| arg.internalTxRate = (__ffs(priv->bss_params.operational_rate_set & ~0xF)); |
| arg.nonErpInternalTxRate = (__ffs(priv->bss_params.operational_rate_set & ~0xF)); |
| } |
| |
| pr_debug("[STA] BTCOEX_INFO MODE %d, internalTxRate : %x, nonErpInternalTxRate: %x\n", |
| priv->mode, |
| arg.internalTxRate, |
| arg.nonErpInternalTxRate); |
| |
| ret = wsm_write_mib(priv, WSM_MIB_ID_OVERRIDE_INTERNAL_TX_RATE, |
| &arg, sizeof(arg)); |
| |
| return ret; |
| } |
| |
| void cw1200_bss_info_changed(struct ieee80211_hw *dev, |
| struct ieee80211_vif *vif, |
| struct ieee80211_bss_conf *info, |
| u32 changed) |
| { |
| struct cw1200_common *priv = dev->priv; |
| bool do_join = false; |
| |
| mutex_lock(&priv->conf_mutex); |
| |
| pr_debug("BSS CHANGED: %08x\n", changed); |
| |
| /* TODO: BSS_CHANGED_QOS */ |
| /* TODO: BSS_CHANGED_TXPOWER */ |
| |
| if (changed & BSS_CHANGED_ARP_FILTER) { |
| struct wsm_mib_arp_ipv4_filter filter = {0}; |
| int i; |
| |
| pr_debug("[STA] BSS_CHANGED_ARP_FILTER cnt: %d\n", |
| info->arp_addr_cnt); |
| |
| /* Currently only one IP address is supported by firmware. |
| * In case of more IPs arp filtering will be disabled. |
| */ |
| if (info->arp_addr_cnt > 0 && |
| info->arp_addr_cnt <= WSM_MAX_ARP_IP_ADDRTABLE_ENTRIES) { |
| for (i = 0; i < info->arp_addr_cnt; i++) { |
| filter.ipv4addrs[i] = info->arp_addr_list[i]; |
| pr_debug("[STA] addr[%d]: 0x%X\n", |
| i, filter.ipv4addrs[i]); |
| } |
| filter.enable = __cpu_to_le32(1); |
| } |
| |
| pr_debug("[STA] arp ip filter enable: %d\n", |
| __le32_to_cpu(filter.enable)); |
| |
| wsm_set_arp_ipv4_filter(priv, &filter); |
| } |
| |
| if (changed & |
| (BSS_CHANGED_BEACON | |
| BSS_CHANGED_AP_PROBE_RESP | |
| BSS_CHANGED_BSSID | |
| BSS_CHANGED_SSID | |
| BSS_CHANGED_IBSS)) { |
| pr_debug("BSS_CHANGED_BEACON\n"); |
| priv->beacon_int = info->beacon_int; |
| cw1200_update_beaconing(priv); |
| cw1200_upload_beacon(priv); |
| } |
| |
| if (changed & BSS_CHANGED_BEACON_ENABLED) { |
| pr_debug("BSS_CHANGED_BEACON_ENABLED (%d)\n", info->enable_beacon); |
| |
| if (priv->enable_beacon != info->enable_beacon) { |
| cw1200_enable_beaconing(priv, info->enable_beacon); |
| priv->enable_beacon = info->enable_beacon; |
| } |
| } |
| |
| if (changed & BSS_CHANGED_BEACON_INT) { |
| pr_debug("CHANGED_BEACON_INT\n"); |
| if (info->ibss_joined) |
| do_join = true; |
| else if (priv->join_status == CW1200_JOIN_STATUS_AP) |
| cw1200_update_beaconing(priv); |
| } |
| |
| /* assoc/disassoc, or maybe AID changed */ |
| if (changed & BSS_CHANGED_ASSOC) { |
| wsm_lock_tx(priv); |
| priv->wep_default_key_id = -1; |
| wsm_unlock_tx(priv); |
| } |
| |
| if (changed & BSS_CHANGED_BSSID) { |
| pr_debug("BSS_CHANGED_BSSID\n"); |
| do_join = true; |
| } |
| |
| if (changed & |
| (BSS_CHANGED_ASSOC | |
| BSS_CHANGED_BSSID | |
| BSS_CHANGED_IBSS | |
| BSS_CHANGED_BASIC_RATES | |
| BSS_CHANGED_HT)) { |
| pr_debug("BSS_CHANGED_ASSOC\n"); |
| if (info->assoc) { |
| if (priv->join_status < CW1200_JOIN_STATUS_PRE_STA) { |
| ieee80211_connection_loss(vif); |
| mutex_unlock(&priv->conf_mutex); |
| return; |
| } else if (priv->join_status == CW1200_JOIN_STATUS_PRE_STA) { |
| priv->join_status = CW1200_JOIN_STATUS_STA; |
| } |
| } else { |
| do_join = true; |
| } |
| |
| if (info->assoc || info->ibss_joined) { |
| struct ieee80211_sta *sta = NULL; |
| __le32 htprot = 0; |
| |
| if (info->dtim_period) |
| priv->join_dtim_period = info->dtim_period; |
| priv->beacon_int = info->beacon_int; |
| |
| rcu_read_lock(); |
| |
| if (info->bssid && !info->ibss_joined) |
| sta = ieee80211_find_sta(vif, info->bssid); |
| if (sta) { |
| priv->ht_info.ht_cap = sta->ht_cap; |
| priv->bss_params.operational_rate_set = |
| cw1200_rate_mask_to_wsm(priv, |
| sta->supp_rates[priv->channel->band]); |
| priv->ht_info.channel_type = cfg80211_get_chandef_type(&dev->conf.chandef); |
| priv->ht_info.operation_mode = info->ht_operation_mode; |
| } else { |
| memset(&priv->ht_info, 0, |
| sizeof(priv->ht_info)); |
| priv->bss_params.operational_rate_set = -1; |
| } |
| rcu_read_unlock(); |
| |
| /* Non Greenfield stations present */ |
| if (priv->ht_info.operation_mode & |
| IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT) |
| htprot |= cpu_to_le32(WSM_NON_GREENFIELD_STA_PRESENT); |
| |
| /* Set HT protection method */ |
| htprot |= cpu_to_le32((priv->ht_info.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION) << 2); |
| |
| /* TODO: |
| * STBC_param.dual_cts |
| * STBC_param.LSIG_TXOP_FILL |
| */ |
| |
| wsm_write_mib(priv, WSM_MIB_ID_SET_HT_PROTECTION, |
| &htprot, sizeof(htprot)); |
| |
| priv->association_mode.greenfield = |
| cw1200_ht_greenfield(&priv->ht_info); |
| priv->association_mode.flags = |
| WSM_ASSOCIATION_MODE_SNOOP_ASSOC_FRAMES | |
| WSM_ASSOCIATION_MODE_USE_PREAMBLE_TYPE | |
| WSM_ASSOCIATION_MODE_USE_HT_MODE | |
| WSM_ASSOCIATION_MODE_USE_BASIC_RATE_SET | |
| WSM_ASSOCIATION_MODE_USE_MPDU_START_SPACING; |
| priv->association_mode.preamble = |
| info->use_short_preamble ? |
| WSM_JOIN_PREAMBLE_SHORT : |
| WSM_JOIN_PREAMBLE_LONG; |
| priv->association_mode.basic_rate_set = __cpu_to_le32( |
| cw1200_rate_mask_to_wsm(priv, |
| info->basic_rates)); |
| priv->association_mode.mpdu_start_spacing = |
| cw1200_ht_ampdu_density(&priv->ht_info); |
| |
| cw1200_cqm_bssloss_sm(priv, 0, 0, 0); |
| cancel_work_sync(&priv->unjoin_work); |
| |
| priv->bss_params.beacon_lost_count = priv->cqm_beacon_loss_count; |
| priv->bss_params.aid = info->aid; |
| |
| if (priv->join_dtim_period < 1) |
| priv->join_dtim_period = 1; |
| |
| pr_debug("[STA] DTIM %d, interval: %d\n", |
| priv->join_dtim_period, priv->beacon_int); |
| pr_debug("[STA] Preamble: %d, Greenfield: %d, Aid: %d, Rates: 0x%.8X, Basic: 0x%.8X\n", |
| priv->association_mode.preamble, |
| priv->association_mode.greenfield, |
| priv->bss_params.aid, |
| priv->bss_params.operational_rate_set, |
| priv->association_mode.basic_rate_set); |
| wsm_set_association_mode(priv, &priv->association_mode); |
| |
| if (!info->ibss_joined) { |
| wsm_keep_alive_period(priv, 30 /* sec */); |
| wsm_set_bss_params(priv, &priv->bss_params); |
| priv->setbssparams_done = true; |
| cw1200_set_beacon_wakeup_period_work(&priv->set_beacon_wakeup_period_work); |
| cw1200_set_pm(priv, &priv->powersave_mode); |
| } |
| if (priv->vif->p2p) { |
| pr_debug("[STA] Setting p2p powersave configuration.\n"); |
| wsm_set_p2p_ps_modeinfo(priv, |
| &priv->p2p_ps_modeinfo); |
| } |
| if (priv->bt_present) |
| cw1200_set_btcoexinfo(priv); |
| } else { |
| memset(&priv->association_mode, 0, |
| sizeof(priv->association_mode)); |
| memset(&priv->bss_params, 0, sizeof(priv->bss_params)); |
| } |
| } |
| |
| /* ERP Protection */ |
| if (changed & (BSS_CHANGED_ASSOC | |
| BSS_CHANGED_ERP_CTS_PROT | |
| BSS_CHANGED_ERP_PREAMBLE)) { |
| u32 prev_erp_info = priv->erp_info; |
| if (info->use_cts_prot) |
| priv->erp_info |= WLAN_ERP_USE_PROTECTION; |
| else if (!(prev_erp_info & WLAN_ERP_NON_ERP_PRESENT)) |
| priv->erp_info &= ~WLAN_ERP_USE_PROTECTION; |
| |
| if (info->use_short_preamble) |
| priv->erp_info |= WLAN_ERP_BARKER_PREAMBLE; |
| else |
| priv->erp_info &= ~WLAN_ERP_BARKER_PREAMBLE; |
| |
| pr_debug("[STA] ERP Protection: %x\n", priv->erp_info); |
| |
| if (prev_erp_info != priv->erp_info) |
| queue_work(priv->workqueue, &priv->set_cts_work); |
| } |
| |
| /* ERP Slottime */ |
| if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_SLOT)) { |
| __le32 slot_time = info->use_short_slot ? |
| __cpu_to_le32(9) : __cpu_to_le32(20); |
| pr_debug("[STA] Slot time: %d us.\n", |
| __le32_to_cpu(slot_time)); |
| wsm_write_mib(priv, WSM_MIB_ID_DOT11_SLOT_TIME, |
| &slot_time, sizeof(slot_time)); |
| } |
| |
| if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_CQM)) { |
| struct wsm_rcpi_rssi_threshold threshold = { |
| .rollingAverageCount = 8, |
| }; |
| pr_debug("[CQM] RSSI threshold subscribe: %d +- %d\n", |
| info->cqm_rssi_thold, info->cqm_rssi_hyst); |
| priv->cqm_rssi_thold = info->cqm_rssi_thold; |
| priv->cqm_rssi_hyst = info->cqm_rssi_hyst; |
| |
| if (info->cqm_rssi_thold || info->cqm_rssi_hyst) { |
| /* RSSI subscription enabled */ |
| /* TODO: It's not a correct way of setting threshold. |
| * Upper and lower must be set equal here and adjusted |
| * in callback. However current implementation is much |
| * more relaible and stable. |
| */ |
| |
| /* RSSI: signed Q8.0, RCPI: unsigned Q7.1 |
| * RSSI = RCPI / 2 - 110 |
| */ |
| if (priv->cqm_use_rssi) { |
| threshold.upperThreshold = |
| info->cqm_rssi_thold + info->cqm_rssi_hyst; |
| threshold.lowerThreshold = |
| info->cqm_rssi_thold; |
| threshold.rssiRcpiMode |= WSM_RCPI_RSSI_USE_RSSI; |
| } else { |
| threshold.upperThreshold = (info->cqm_rssi_thold + info->cqm_rssi_hyst + 110) * 2; |
| threshold.lowerThreshold = (info->cqm_rssi_thold + 110) * 2; |
| } |
| threshold.rssiRcpiMode |= WSM_RCPI_RSSI_THRESHOLD_ENABLE; |
| } else { |
| /* There is a bug in FW, see sta.c. We have to enable |
| * dummy subscription to get correct RSSI values. |
| */ |
| threshold.rssiRcpiMode |= |
| WSM_RCPI_RSSI_THRESHOLD_ENABLE | |
| WSM_RCPI_RSSI_DONT_USE_UPPER | |
| WSM_RCPI_RSSI_DONT_USE_LOWER; |
| if (priv->cqm_use_rssi) |
| threshold.rssiRcpiMode |= WSM_RCPI_RSSI_USE_RSSI; |
| } |
| wsm_set_rcpi_rssi_threshold(priv, &threshold); |
| } |
| mutex_unlock(&priv->conf_mutex); |
| |
| if (do_join) { |
| wsm_lock_tx(priv); |
| cw1200_do_join(priv); /* Will unlock it for us */ |
| } |
| } |
| |
| void cw1200_multicast_start_work(struct work_struct *work) |
| { |
| struct cw1200_common *priv = |
| container_of(work, struct cw1200_common, multicast_start_work); |
| long tmo = priv->join_dtim_period * |
| (priv->beacon_int + 20) * HZ / 1024; |
| |
| cancel_work_sync(&priv->multicast_stop_work); |
| |
| if (!priv->aid0_bit_set) { |
| wsm_lock_tx(priv); |
| cw1200_set_tim_impl(priv, true); |
| priv->aid0_bit_set = true; |
| mod_timer(&priv->mcast_timeout, jiffies + tmo); |
| wsm_unlock_tx(priv); |
| } |
| } |
| |
| void cw1200_multicast_stop_work(struct work_struct *work) |
| { |
| struct cw1200_common *priv = |
| container_of(work, struct cw1200_common, multicast_stop_work); |
| |
| if (priv->aid0_bit_set) { |
| del_timer_sync(&priv->mcast_timeout); |
| wsm_lock_tx(priv); |
| priv->aid0_bit_set = false; |
| cw1200_set_tim_impl(priv, false); |
| wsm_unlock_tx(priv); |
| } |
| } |
| |
| void cw1200_mcast_timeout(struct timer_list *t) |
| { |
| struct cw1200_common *priv = from_timer(priv, t, mcast_timeout); |
| |
| wiphy_warn(priv->hw->wiphy, |
| "Multicast delivery timeout.\n"); |
| spin_lock_bh(&priv->ps_state_lock); |
| priv->tx_multicast = priv->aid0_bit_set && |
| priv->buffered_multicasts; |
| if (priv->tx_multicast) |
| cw1200_bh_wakeup(priv); |
| spin_unlock_bh(&priv->ps_state_lock); |
| } |
| |
| int cw1200_ampdu_action(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, |
| struct ieee80211_ampdu_params *params) |
| { |
| /* Aggregation is implemented fully in firmware, |
| * including block ack negotiation. Do not allow |
| * mac80211 stack to do anything: it interferes with |
| * the firmware. |
| */ |
| |
| /* Note that we still need this function stubbed. */ |
| return -ENOTSUPP; |
| } |
| |
| /* ******************************************************************** */ |
| /* WSM callback */ |
| void cw1200_suspend_resume(struct cw1200_common *priv, |
| struct wsm_suspend_resume *arg) |
| { |
| pr_debug("[AP] %s: %s\n", |
| arg->stop ? "stop" : "start", |
| arg->multicast ? "broadcast" : "unicast"); |
| |
| if (arg->multicast) { |
| bool cancel_tmo = false; |
| spin_lock_bh(&priv->ps_state_lock); |
| if (arg->stop) { |
| priv->tx_multicast = false; |
| } else { |
| /* Firmware sends this indication every DTIM if there |
| * is a STA in powersave connected. There is no reason |
| * to suspend, following wakeup will consume much more |
| * power than it could be saved. |
| */ |
| cw1200_pm_stay_awake(&priv->pm_state, |
| priv->join_dtim_period * |
| (priv->beacon_int + 20) * HZ / 1024); |
| priv->tx_multicast = (priv->aid0_bit_set && |
| priv->buffered_multicasts); |
| if (priv->tx_multicast) { |
| cancel_tmo = true; |
| cw1200_bh_wakeup(priv); |
| } |
| } |
| spin_unlock_bh(&priv->ps_state_lock); |
| if (cancel_tmo) |
| del_timer_sync(&priv->mcast_timeout); |
| } else { |
| spin_lock_bh(&priv->ps_state_lock); |
| cw1200_ps_notify(priv, arg->link_id, arg->stop); |
| spin_unlock_bh(&priv->ps_state_lock); |
| if (!arg->stop) |
| cw1200_bh_wakeup(priv); |
| } |
| return; |
| } |
| |
| /* ******************************************************************** */ |
| /* AP privates */ |
| |
| static int cw1200_upload_beacon(struct cw1200_common *priv) |
| { |
| int ret = 0; |
| struct ieee80211_mgmt *mgmt; |
| struct wsm_template_frame frame = { |
| .frame_type = WSM_FRAME_TYPE_BEACON, |
| }; |
| |
| u16 tim_offset; |
| u16 tim_len; |
| |
| if (priv->mode == NL80211_IFTYPE_STATION || |
| priv->mode == NL80211_IFTYPE_MONITOR || |
| priv->mode == NL80211_IFTYPE_UNSPECIFIED) |
| goto done; |
| |
| if (priv->vif->p2p) |
| frame.rate = WSM_TRANSMIT_RATE_6; |
| |
| frame.skb = ieee80211_beacon_get_tim(priv->hw, priv->vif, |
| &tim_offset, &tim_len); |
| if (!frame.skb) |
| return -ENOMEM; |
| |
| ret = wsm_set_template_frame(priv, &frame); |
| |
| if (ret) |
| goto done; |
| |
| /* TODO: Distill probe resp; remove TIM |
| * and any other beacon-specific IEs |
| */ |
| mgmt = (void *)frame.skb->data; |
| mgmt->frame_control = |
| __cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| IEEE80211_STYPE_PROBE_RESP); |
| |
| frame.frame_type = WSM_FRAME_TYPE_PROBE_RESPONSE; |
| if (priv->vif->p2p) { |
| ret = wsm_set_probe_responder(priv, true); |
| } else { |
| ret = wsm_set_template_frame(priv, &frame); |
| wsm_set_probe_responder(priv, false); |
| } |
| |
| done: |
| dev_kfree_skb(frame.skb); |
| |
| return ret; |
| } |
| |
| static int cw1200_upload_pspoll(struct cw1200_common *priv) |
| { |
| int ret = 0; |
| struct wsm_template_frame frame = { |
| .frame_type = WSM_FRAME_TYPE_PS_POLL, |
| .rate = 0xFF, |
| }; |
| |
| |
| frame.skb = ieee80211_pspoll_get(priv->hw, priv->vif); |
| if (!frame.skb) |
| return -ENOMEM; |
| |
| ret = wsm_set_template_frame(priv, &frame); |
| |
| dev_kfree_skb(frame.skb); |
| |
| return ret; |
| } |
| |
| static int cw1200_upload_null(struct cw1200_common *priv) |
| { |
| int ret = 0; |
| struct wsm_template_frame frame = { |
| .frame_type = WSM_FRAME_TYPE_NULL, |
| .rate = 0xFF, |
| }; |
| |
| frame.skb = ieee80211_nullfunc_get(priv->hw, priv->vif); |
| if (!frame.skb) |
| return -ENOMEM; |
| |
| ret = wsm_set_template_frame(priv, &frame); |
| |
| dev_kfree_skb(frame.skb); |
| |
| return ret; |
| } |
| |
| static int cw1200_upload_qosnull(struct cw1200_common *priv) |
| { |
| /* TODO: This needs to be implemented |
| |
| struct wsm_template_frame frame = { |
| .frame_type = WSM_FRAME_TYPE_QOS_NULL, |
| .rate = 0xFF, |
| }; |
| |
| frame.skb = ieee80211_qosnullfunc_get(priv->hw, priv->vif); |
| if (!frame.skb) |
| return -ENOMEM; |
| |
| ret = wsm_set_template_frame(priv, &frame); |
| |
| dev_kfree_skb(frame.skb); |
| |
| */ |
| return 0; |
| } |
| |
| static int cw1200_enable_beaconing(struct cw1200_common *priv, |
| bool enable) |
| { |
| struct wsm_beacon_transmit transmit = { |
| .enable_beaconing = enable, |
| }; |
| |
| return wsm_beacon_transmit(priv, &transmit); |
| } |
| |
| static int cw1200_start_ap(struct cw1200_common *priv) |
| { |
| int ret; |
| struct ieee80211_bss_conf *conf = &priv->vif->bss_conf; |
| struct wsm_start start = { |
| .mode = priv->vif->p2p ? |
| WSM_START_MODE_P2P_GO : WSM_START_MODE_AP, |
| .band = (priv->channel->band == NL80211_BAND_5GHZ) ? |
| WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G, |
| .channel_number = priv->channel->hw_value, |
| .beacon_interval = conf->beacon_int, |
| .dtim_period = conf->dtim_period, |
| .preamble = conf->use_short_preamble ? |
| WSM_JOIN_PREAMBLE_SHORT : |
| WSM_JOIN_PREAMBLE_LONG, |
| .probe_delay = 100, |
| .basic_rate_set = cw1200_rate_mask_to_wsm(priv, |
| conf->basic_rates), |
| }; |
| struct wsm_operational_mode mode = { |
| .power_mode = cw1200_power_mode, |
| .disable_more_flag_usage = true, |
| }; |
| |
| memset(start.ssid, 0, sizeof(start.ssid)); |
| if (!conf->hidden_ssid) { |
| start.ssid_len = conf->ssid_len; |
| memcpy(start.ssid, conf->ssid, start.ssid_len); |
| } |
| |
| priv->beacon_int = conf->beacon_int; |
| priv->join_dtim_period = conf->dtim_period; |
| |
| memset(&priv->link_id_db, 0, sizeof(priv->link_id_db)); |
| |
| pr_debug("[AP] ch: %d(%d), bcn: %d(%d), brt: 0x%.8X, ssid: %.*s.\n", |
| start.channel_number, start.band, |
| start.beacon_interval, start.dtim_period, |
| start.basic_rate_set, |
| start.ssid_len, start.ssid); |
| ret = wsm_start(priv, &start); |
| if (!ret) |
| ret = cw1200_upload_keys(priv); |
| if (!ret && priv->vif->p2p) { |
| pr_debug("[AP] Setting p2p powersave configuration.\n"); |
| wsm_set_p2p_ps_modeinfo(priv, &priv->p2p_ps_modeinfo); |
| } |
| if (!ret) { |
| wsm_set_block_ack_policy(priv, 0, 0); |
| priv->join_status = CW1200_JOIN_STATUS_AP; |
| cw1200_update_filtering(priv); |
| } |
| wsm_set_operational_mode(priv, &mode); |
| return ret; |
| } |
| |
| static int cw1200_update_beaconing(struct cw1200_common *priv) |
| { |
| struct ieee80211_bss_conf *conf = &priv->vif->bss_conf; |
| struct wsm_reset reset = { |
| .link_id = 0, |
| .reset_statistics = true, |
| }; |
| |
| if (priv->mode == NL80211_IFTYPE_AP) { |
| /* TODO: check if changed channel, band */ |
| if (priv->join_status != CW1200_JOIN_STATUS_AP || |
| priv->beacon_int != conf->beacon_int) { |
| pr_debug("ap restarting\n"); |
| wsm_lock_tx(priv); |
| if (priv->join_status != CW1200_JOIN_STATUS_PASSIVE) |
| wsm_reset(priv, &reset); |
| priv->join_status = CW1200_JOIN_STATUS_PASSIVE; |
| cw1200_start_ap(priv); |
| wsm_unlock_tx(priv); |
| } else |
| pr_debug("ap started join_status: %d\n", |
| priv->join_status); |
| } |
| return 0; |
| } |