/* * Mac80211 STA API for ST-Ericsson CW1200 drivers * * Copyright (c) 2010, ST-Ericsson * Author: Dmitry Tarnyagin * * 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 #include #include #include #include #include "cw1200.h" #include "sta.h" #include "fwio.h" #include "bh.h" #include "debug.h" #ifndef ERP_INFO_BYTE_OFFSET #define ERP_INFO_BYTE_OFFSET 2 #endif static void cw1200_do_join(struct cw1200_common *priv); static void cw1200_do_unjoin(struct cw1200_common *priv); static int cw1200_upload_beacon(struct cw1200_common *priv); static int cw1200_upload_pspoll(struct cw1200_common *priv); static int cw1200_upload_null(struct cw1200_common *priv); static int cw1200_upload_qosnull(struct cw1200_common *priv); static int cw1200_start_ap(struct cw1200_common *priv); static int cw1200_update_beaconing(struct cw1200_common *priv); static int cw1200_enable_beaconing(struct cw1200_common *priv, bool enable); static void __cw1200_sta_notify(struct ieee80211_hw *dev, struct ieee80211_vif *vif, enum sta_notify_cmd notify_cmd, int link_id); static int __cw1200_flush(struct cw1200_common *priv, bool drop); static inline void __cw1200_free_event_queue(struct list_head *list) { struct cw1200_wsm_event *event, *tmp; list_for_each_entry_safe(event, tmp, list, link) { list_del(&event->link); kfree(event); } } /* ******************************************************************** */ /* STA API */ int cw1200_start(struct ieee80211_hw *dev) { struct cw1200_common *priv = dev->priv; int ret = 0; cw1200_pm_stay_awake(&priv->pm_state, HZ); mutex_lock(&priv->conf_mutex); /* default EDCA */ WSM_EDCA_SET(&priv->edca, 0, 0x0002, 0x0003, 0x0007, 47, 0xc8, false); WSM_EDCA_SET(&priv->edca, 1, 0x0002, 0x0007, 0x000f, 94, 0xc8, false); WSM_EDCA_SET(&priv->edca, 2, 0x0003, 0x000f, 0x03ff, 0, 0xc8, false); WSM_EDCA_SET(&priv->edca, 3, 0x0007, 0x000f, 0x03ff, 0, 0xc8, false); ret = wsm_set_edca_params(priv, &priv->edca); if (ret) goto out; ret = cw1200_set_uapsd_param(priv, &priv->edca); if (ret) goto out; priv->setbssparams_done = false; memcpy(priv->mac_addr, dev->wiphy->perm_addr, ETH_ALEN); priv->mode = NL80211_IFTYPE_MONITOR; priv->wep_default_key_id = -1; priv->cqm_beacon_loss_count = 10; ret = cw1200_setup_mac(priv); if (ret) goto out; out: mutex_unlock(&priv->conf_mutex); return ret; } void cw1200_stop(struct ieee80211_hw *dev) { struct cw1200_common *priv = dev->priv; LIST_HEAD(list); int i; wsm_lock_tx(priv); while (down_trylock(&priv->scan.lock)) { /* Scan is in progress. Force it to stop. */ priv->scan.req = NULL; schedule(); } up(&priv->scan.lock); cancel_delayed_work_sync(&priv->scan.probe_work); cancel_delayed_work_sync(&priv->scan.timeout); cancel_delayed_work_sync(&priv->clear_recent_scan_work); cancel_delayed_work_sync(&priv->join_timeout); cw1200_cqm_bssloss_sm(priv, 0, 0, 0); cancel_work_sync(&priv->unjoin_work); cancel_delayed_work_sync(&priv->link_id_gc_work); flush_workqueue(priv->workqueue); del_timer_sync(&priv->mcast_timeout); mutex_lock(&priv->conf_mutex); priv->mode = NL80211_IFTYPE_UNSPECIFIED; priv->listening = false; spin_lock(&priv->event_queue_lock); list_splice_init(&priv->event_queue, &list); spin_unlock(&priv->event_queue_lock); __cw1200_free_event_queue(&list); priv->join_status = CW1200_JOIN_STATUS_PASSIVE; priv->join_pending = false; for (i = 0; i < 4; i++) cw1200_queue_clear(&priv->tx_queue[i]); mutex_unlock(&priv->conf_mutex); tx_policy_clean(priv); /* HACK! */ if (atomic_xchg(&priv->tx_lock, 1) != 1) pr_debug("[STA] TX is force-unlocked due to stop request.\n"); wsm_unlock_tx(priv); atomic_xchg(&priv->tx_lock, 0); /* for recovery to work */ } static int cw1200_bssloss_mitigation = 1; module_param(cw1200_bssloss_mitigation, int, 0644); MODULE_PARM_DESC(cw1200_bssloss_mitigation, "BSS Loss mitigation. 0 == disabled, 1 == enabled (default)"); void __cw1200_cqm_bssloss_sm(struct cw1200_common *priv, int init, int good, int bad) { int tx = 0; priv->delayed_link_loss = 0; cancel_work_sync(&priv->bss_params_work); pr_debug("[STA] CQM BSSLOSS_SM: state: %d init %d good %d bad: %d txlock: %d uj: %d\n", priv->bss_loss_state, init, good, bad, atomic_read(&priv->tx_lock), priv->delayed_unjoin); /* If we have a pending unjoin */ if (priv->delayed_unjoin) return; if (init) { queue_delayed_work(priv->workqueue, &priv->bss_loss_work, HZ); priv->bss_loss_state = 0; /* Skip the confimration procedure in P2P case */ if (!priv->vif->p2p && !atomic_read(&priv->tx_lock)) tx = 1; } else if (good) { cancel_delayed_work_sync(&priv->bss_loss_work); priv->bss_loss_state = 0; queue_work(priv->workqueue, &priv->bss_params_work); } else if (bad) { /* XXX Should we just keep going until we time out? */ if (priv->bss_loss_state < 3) tx = 1; } else { cancel_delayed_work_sync(&priv->bss_loss_work); priv->bss_loss_state = 0; } /* Bypass mitigation if it's disabled */ if (!cw1200_bssloss_mitigation) tx = 0; /* Spit out a NULL packet to our AP if necessary */ if (tx) { struct sk_buff *skb; priv->bss_loss_state++; skb = ieee80211_nullfunc_get(priv->hw, priv->vif); WARN_ON(!skb); if (skb) cw1200_tx(priv->hw, NULL, skb); } } int cw1200_add_interface(struct ieee80211_hw *dev, struct ieee80211_vif *vif) { int ret; struct cw1200_common *priv = dev->priv; /* __le32 auto_calibration_mode = __cpu_to_le32(1); */ vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | IEEE80211_VIF_SUPPORTS_UAPSD | IEEE80211_VIF_SUPPORTS_CQM_RSSI; mutex_lock(&priv->conf_mutex); if (priv->mode != NL80211_IFTYPE_MONITOR) { mutex_unlock(&priv->conf_mutex); return -EOPNOTSUPP; } switch (vif->type) { case NL80211_IFTYPE_STATION: case NL80211_IFTYPE_ADHOC: case NL80211_IFTYPE_MESH_POINT: case NL80211_IFTYPE_AP: priv->mode = vif->type; break; default: mutex_unlock(&priv->conf_mutex); return -EOPNOTSUPP; } priv->vif = vif; memcpy(priv->mac_addr, vif->addr, ETH_ALEN); ret = cw1200_setup_mac(priv); /* Enable auto-calibration */ /* Exception in subsequent channel switch; disabled. * wsm_write_mib(priv, WSM_MIB_ID_SET_AUTO_CALIBRATION_MODE, * &auto_calibration_mode, sizeof(auto_calibration_mode)); */ mutex_unlock(&priv->conf_mutex); return ret; } void cw1200_remove_interface(struct ieee80211_hw *dev, struct ieee80211_vif *vif) { struct cw1200_common *priv = dev->priv; struct wsm_reset reset = { .reset_statistics = true, }; int i; mutex_lock(&priv->conf_mutex); switch (priv->join_status) { case CW1200_JOIN_STATUS_JOINING: case CW1200_JOIN_STATUS_PRE_STA: case CW1200_JOIN_STATUS_STA: case CW1200_JOIN_STATUS_IBSS: wsm_lock_tx(priv); if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0) wsm_unlock_tx(priv); break; case CW1200_JOIN_STATUS_AP: for (i = 0; priv->link_id_map; ++i) { if (priv->link_id_map & BIT(i)) { reset.link_id = i; wsm_reset(priv, &reset); priv->link_id_map &= ~BIT(i); } } memset(priv->link_id_db, 0, sizeof(priv->link_id_db)); priv->sta_asleep_mask = 0; priv->enable_beacon = false; priv->tx_multicast = false; priv->aid0_bit_set = false; priv->buffered_multicasts = false; priv->pspoll_mask = 0; reset.link_id = 0; wsm_reset(priv, &reset); break; case CW1200_JOIN_STATUS_MONITOR: cw1200_update_listening(priv, false); break; default: break; } priv->vif = NULL; priv->mode = NL80211_IFTYPE_MONITOR; eth_zero_addr(priv->mac_addr); memset(&priv->p2p_ps_modeinfo, 0, sizeof(priv->p2p_ps_modeinfo)); cw1200_free_keys(priv); cw1200_setup_mac(priv); priv->listening = false; priv->join_status = CW1200_JOIN_STATUS_PASSIVE; if (!__cw1200_flush(priv, true)) wsm_unlock_tx(priv); mutex_unlock(&priv->conf_mutex); } int cw1200_change_interface(struct ieee80211_hw *dev, struct ieee80211_vif *vif, enum nl80211_iftype new_type, bool p2p) { int ret = 0; pr_debug("change_interface new: %d (%d), old: %d (%d)\n", new_type, p2p, vif->type, vif->p2p); if (new_type != vif->type || vif->p2p != p2p) { cw1200_remove_interface(dev, vif); vif->type = new_type; vif->p2p = p2p; ret = cw1200_add_interface(dev, vif); } return ret; } int cw1200_config(struct ieee80211_hw *dev, u32 changed) { int ret = 0; struct cw1200_common *priv = dev->priv; struct ieee80211_conf *conf = &dev->conf; pr_debug("CONFIG CHANGED: %08x\n", changed); down(&priv->scan.lock); mutex_lock(&priv->conf_mutex); /* TODO: IEEE80211_CONF_CHANGE_QOS */ /* TODO: IEEE80211_CONF_CHANGE_LISTEN_INTERVAL */ if (changed & IEEE80211_CONF_CHANGE_POWER) { priv->output_power = conf->power_level; pr_debug("[STA] TX power: %d\n", priv->output_power); wsm_set_output_power(priv, priv->output_power * 10); } if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) && (priv->channel != conf->chandef.chan)) { struct ieee80211_channel *ch = conf->chandef.chan; struct wsm_switch_channel channel = { .channel_number = ch->hw_value, }; pr_debug("[STA] Freq %d (wsm ch: %d).\n", ch->center_freq, ch->hw_value); /* __cw1200_flush() implicitly locks tx, if successful */ if (!__cw1200_flush(priv, false)) { if (!wsm_switch_channel(priv, &channel)) { ret = wait_event_timeout(priv->channel_switch_done, !priv->channel_switch_in_progress, 3 * HZ); if (ret) { /* Already unlocks if successful */ priv->channel = ch; ret = 0; } else { ret = -ETIMEDOUT; } } else { /* Unlock if switch channel fails */ wsm_unlock_tx(priv); } } } if (changed & IEEE80211_CONF_CHANGE_PS) { if (!(conf->flags & IEEE80211_CONF_PS)) priv->powersave_mode.mode = WSM_PSM_ACTIVE; else if (conf->dynamic_ps_timeout <= 0) priv->powersave_mode.mode = WSM_PSM_PS; else priv->powersave_mode.mode = WSM_PSM_FAST_PS; /* Firmware requires that value for this 1-byte field must * be specified in units of 500us. Values above the 128ms * threshold are not supported. */ if (conf->dynamic_ps_timeout >= 0x80) priv->powersave_mode.fast_psm_idle_period = 0xFF; else priv->powersave_mode.fast_psm_idle_period = conf->dynamic_ps_timeout << 1; if (priv->join_status == CW1200_JOIN_STATUS_STA && priv->bss_params.aid) cw1200_set_pm(priv, &priv->powersave_mode); } if (changed & IEEE80211_CONF_CHANGE_MONITOR) { /* TBD: It looks like it's transparent * there's a monitor interface present -- use this * to determine for example whether to calculate * timestamps for packets or not, do not use instead * of filter flags! */ } if (changed & IEEE80211_CONF_CHANGE_IDLE) { struct wsm_operational_mode mode = { .power_mode = cw1200_power_mode, .disable_more_flag_usage = true, }; wsm_lock_tx(priv); /* Disable p2p-dev mode forced by TX request */ if ((priv->join_status == CW1200_JOIN_STATUS_MONITOR) && (conf->flags & IEEE80211_CONF_IDLE) && !priv->listening) { cw1200_disable_listening(priv); priv->join_status = CW1200_JOIN_STATUS_PASSIVE; } wsm_set_operational_mode(priv, &mode); wsm_unlock_tx(priv); } if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) { pr_debug("[STA] Retry limits: %d (long), %d (short).\n", conf->long_frame_max_tx_count, conf->short_frame_max_tx_count); spin_lock_bh(&priv->tx_policy_cache.lock); priv->long_frame_max_tx_count = conf->long_frame_max_tx_count; priv->short_frame_max_tx_count = (conf->short_frame_max_tx_count < 0x0F) ? conf->short_frame_max_tx_count : 0x0F; priv->hw->max_rate_tries = priv->short_frame_max_tx_count; spin_unlock_bh(&priv->tx_policy_cache.lock); } mutex_unlock(&priv->conf_mutex); up(&priv->scan.lock); return ret; } void cw1200_update_filtering(struct cw1200_common *priv) { int ret; bool bssid_filtering = !priv->rx_filter.bssid; bool is_p2p = priv->vif && priv->vif->p2p; bool is_sta = priv->vif && NL80211_IFTYPE_STATION == priv->vif->type; static struct wsm_beacon_filter_control bf_ctrl; static struct wsm_mib_beacon_filter_table bf_tbl = { .entry[0].ie_id = WLAN_EID_VENDOR_SPECIFIC, .entry[0].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED | WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT | WSM_BEACON_FILTER_IE_HAS_APPEARED, .entry[0].oui[0] = 0x50, .entry[0].oui[1] = 0x6F, .entry[0].oui[2] = 0x9A, .entry[1].ie_id = WLAN_EID_HT_OPERATION, .entry[1].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED | WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT | WSM_BEACON_FILTER_IE_HAS_APPEARED, .entry[2].ie_id = WLAN_EID_ERP_INFO, .entry[2].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED | WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT | WSM_BEACON_FILTER_IE_HAS_APPEARED, }; if (priv->join_status == CW1200_JOIN_STATUS_PASSIVE) return; else if (priv->join_status == CW1200_JOIN_STATUS_MONITOR) bssid_filtering = false; if (priv->disable_beacon_filter) { bf_ctrl.enabled = 0; bf_ctrl.bcn_count = 1; bf_tbl.num = __cpu_to_le32(0); } else if (is_p2p || !is_sta) { bf_ctrl.enabled = WSM_BEACON_FILTER_ENABLE | WSM_BEACON_FILTER_AUTO_ERP; bf_ctrl.bcn_count = 0; bf_tbl.num = __cpu_to_le32(2); } else { bf_ctrl.enabled = WSM_BEACON_FILTER_ENABLE; bf_ctrl.bcn_count = 0; bf_tbl.num = __cpu_to_le32(3); } /* When acting as p2p client being connected to p2p GO, in order to * receive frames from a different p2p device, turn off bssid filter. * * WARNING: FW dependency! * This can only be used with FW WSM371 and its successors. * In that FW version even with bssid filter turned off, * device will block most of the unwanted frames. */ if (is_p2p) bssid_filtering = false; ret = wsm_set_rx_filter(priv, &priv->rx_filter); if (!ret) ret = wsm_set_beacon_filter_table(priv, &bf_tbl); if (!ret) ret = wsm_beacon_filter_control(priv, &bf_ctrl); if (!ret) ret = wsm_set_bssid_filtering(priv, bssid_filtering); if (!ret) ret = wsm_set_multicast_filter(priv, &priv->multicast_filter); if (ret) wiphy_err(priv->hw->wiphy, "Update filtering failed: %d.\n", ret); return; } void cw1200_update_filtering_work(struct work_struct *work) { struct cw1200_common *priv = container_of(work, struct cw1200_common, update_filtering_work); cw1200_update_filtering(priv); } void cw1200_set_beacon_wakeup_period_work(struct work_struct *work) { struct cw1200_common *priv = container_of(work, struct cw1200_common, set_beacon_wakeup_period_work); wsm_set_beacon_wakeup_period(priv, priv->beacon_int * priv->join_dtim_period > MAX_BEACON_SKIP_TIME_MS ? 1 : priv->join_dtim_period, 0); } u64 cw1200_prepare_multicast(struct ieee80211_hw *hw, struct netdev_hw_addr_list *mc_list) { static u8 broadcast_ipv6[ETH_ALEN] = { 0x33, 0x33, 0x00, 0x00, 0x00, 0x01 }; static u8 broadcast_ipv4[ETH_ALEN] = { 0x01, 0x00, 0x5e, 0x00, 0x00, 0x01 }; struct cw1200_common *priv = hw->priv; struct netdev_hw_addr *ha; int count = 0; /* Disable multicast filtering */ priv->has_multicast_subscription = false; memset(&priv->multicast_filter, 0x00, sizeof(priv->multicast_filter)); if (netdev_hw_addr_list_count(mc_list) > WSM_MAX_GRP_ADDRTABLE_ENTRIES) return 0; /* Enable if requested */ netdev_hw_addr_list_for_each(ha, mc_list) { pr_debug("[STA] multicast: %pM\n", ha->addr); memcpy(&priv->multicast_filter.macaddrs[count], ha->addr, ETH_ALEN); if (!ether_addr_equal(ha->addr, broadcast_ipv4) && !ether_addr_equal(ha->addr, broadcast_ipv6)) priv->has_multicast_subscription = true; count++; } if (count) { priv->multicast_filter.enable = __cpu_to_le32(1); priv->multicast_filter.num_addrs = __cpu_to_le32(count); } return netdev_hw_addr_list_count(mc_list); } void cw1200_configure_filter(struct ieee80211_hw *dev, unsigned int changed_flags, unsigned int *total_flags, u64 multicast) { struct cw1200_common *priv = dev->priv; bool listening = !!(*total_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC | FIF_PROBE_REQ)); *total_flags &= FIF_OTHER_BSS | FIF_FCSFAIL | FIF_BCN_PRBRESP_PROMISC | FIF_PROBE_REQ; down(&priv->scan.lock); mutex_lock(&priv->conf_mutex); priv->rx_filter.promiscuous = 0; priv->rx_filter.bssid = (*total_flags & (FIF_OTHER_BSS | FIF_PROBE_REQ)) ? 1 : 0; priv->rx_filter.fcs = (*total_flags & FIF_FCSFAIL) ? 1 : 0; priv->disable_beacon_filter = !(*total_flags & (FIF_BCN_PRBRESP_PROMISC | FIF_PROBE_REQ)); if (priv->listening != listening) { priv->listening = listening; wsm_lock_tx(priv); cw1200_update_listening(priv, listening); wsm_unlock_tx(priv); } cw1200_update_filtering(priv); mutex_unlock(&priv->conf_mutex); up(&priv->scan.lock); } int cw1200_conf_tx(struct ieee80211_hw *dev, struct ieee80211_vif *vif, u16 queue, const struct ieee80211_tx_queue_params *params) { struct cw1200_common *priv = dev->priv; int ret = 0; /* To prevent re-applying PM request OID again and again*/ bool old_uapsd_flags; mutex_lock(&priv->conf_mutex); if (queue < dev->queues) { old_uapsd_flags = le16_to_cpu(priv->uapsd_info.uapsd_flags); WSM_TX_QUEUE_SET(&priv->tx_queue_params, queue, 0, 0, 0); ret = wsm_set_tx_queue_params(priv, &priv->tx_queue_params.params[queue], queue); if (ret) { ret = -EINVAL; goto out; } WSM_EDCA_SET(&priv->edca, queue, params->aifs, params->cw_min, params->cw_max, params->txop, 0xc8, params->uapsd); ret = wsm_set_edca_params(priv, &priv->edca); if (ret) { ret = -EINVAL; goto out; } if (priv->mode == NL80211_IFTYPE_STATION) { ret = cw1200_set_uapsd_param(priv, &priv->edca); if (!ret && priv->setbssparams_done && (priv->join_status == CW1200_JOIN_STATUS_STA) && (old_uapsd_flags != le16_to_cpu(priv->uapsd_info.uapsd_flags))) ret = cw1200_set_pm(priv, &priv->powersave_mode); } } else { ret = -EINVAL; } out: mutex_unlock(&priv->conf_mutex); return ret; } int cw1200_get_stats(struct ieee80211_hw *dev, struct ieee80211_low_level_stats *stats) { struct cw1200_common *priv = dev->priv; memcpy(stats, &priv->stats, sizeof(*stats)); return 0; } int cw1200_set_pm(struct cw1200_common *priv, const struct wsm_set_pm *arg) { struct wsm_set_pm pm = *arg; if (priv->uapsd_info.uapsd_flags != 0) pm.mode &= ~WSM_PSM_FAST_PS_FLAG; if (memcmp(&pm, &priv->firmware_ps_mode, sizeof(struct wsm_set_pm))) { priv->firmware_ps_mode = pm; return wsm_set_pm(priv, &pm); } else { return 0; } } int cw1200_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd, struct ieee80211_vif *vif, struct ieee80211_sta *sta, struct ieee80211_key_conf *key) { int ret = -EOPNOTSUPP; struct cw1200_common *priv = dev->priv; struct ieee80211_key_seq seq; mutex_lock(&priv->conf_mutex); if (cmd == SET_KEY) { u8 *peer_addr = NULL; int pairwise = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) ? 1 : 0; int idx = cw1200_alloc_key(priv); struct wsm_add_key *wsm_key = &priv->keys[idx]; if (idx < 0) { ret = -EINVAL; goto finally; } if (sta) peer_addr = sta->addr; key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE | IEEE80211_KEY_FLAG_RESERVE_TAILROOM; switch (key->cipher) { case WLAN_CIPHER_SUITE_WEP40: case WLAN_CIPHER_SUITE_WEP104: if (key->keylen > 16) { cw1200_free_key(priv, idx); ret = -EINVAL; goto finally; } if (pairwise) { wsm_key->type = WSM_KEY_TYPE_WEP_PAIRWISE; memcpy(wsm_key->wep_pairwise.peer, peer_addr, ETH_ALEN); memcpy(wsm_key->wep_pairwise.keydata, &key->key[0], key->keylen); wsm_key->wep_pairwise.keylen = key->keylen; } else { wsm_key->type = WSM_KEY_TYPE_WEP_DEFAULT; memcpy(wsm_key->wep_group.keydata, &key->key[0], key->keylen); wsm_key->wep_group.keylen = key->keylen; wsm_key->wep_group.keyid = key->keyidx; } break; case WLAN_CIPHER_SUITE_TKIP: ieee80211_get_key_rx_seq(key, 0, &seq); if (pairwise) { wsm_key->type = WSM_KEY_TYPE_TKIP_PAIRWISE; memcpy(wsm_key->tkip_pairwise.peer, peer_addr, ETH_ALEN); memcpy(wsm_key->tkip_pairwise.keydata, &key->key[0], 16); memcpy(wsm_key->tkip_pairwise.tx_mic_key, &key->key[16], 8); memcpy(wsm_key->tkip_pairwise.rx_mic_key, &key->key[24], 8); } else { size_t mic_offset = (priv->mode == NL80211_IFTYPE_AP) ? 16 : 24; wsm_key->type = WSM_KEY_TYPE_TKIP_GROUP; memcpy(wsm_key->tkip_group.keydata, &key->key[0], 16); memcpy(wsm_key->tkip_group.rx_mic_key, &key->key[mic_offset], 8); wsm_key->tkip_group.rx_seqnum[0] = seq.tkip.iv16 & 0xff; wsm_key->tkip_group.rx_seqnum[1] = (seq.tkip.iv16 >> 8) & 0xff; wsm_key->tkip_group.rx_seqnum[2] = seq.tkip.iv32 & 0xff; wsm_key->tkip_group.rx_seqnum[3] = (seq.tkip.iv32 >> 8) & 0xff; wsm_key->tkip_group.rx_seqnum[4] = (seq.tkip.iv32 >> 16) & 0xff; wsm_key->tkip_group.rx_seqnum[5] = (seq.tkip.iv32 >> 24) & 0xff; wsm_key->tkip_group.rx_seqnum[6] = 0; wsm_key->tkip_group.rx_seqnum[7] = 0; wsm_key->tkip_group.keyid = key->keyidx; } break; case WLAN_CIPHER_SUITE_CCMP: ieee80211_get_key_rx_seq(key, 0, &seq); if (pairwise) { wsm_key->type = WSM_KEY_TYPE_AES_PAIRWISE; memcpy(wsm_key->aes_pairwise.peer, peer_addr, ETH_ALEN); memcpy(wsm_key->aes_pairwise.keydata, &key->key[0], 16); } else { wsm_key->type = WSM_KEY_TYPE_AES_GROUP; memcpy(wsm_key->aes_group.keydata, &key->key[0], 16); wsm_key->aes_group.rx_seqnum[0] = seq.ccmp.pn[5]; wsm_key->aes_group.rx_seqnum[1] = seq.ccmp.pn[4]; wsm_key->aes_group.rx_seqnum[2] = seq.ccmp.pn[3]; wsm_key->aes_group.rx_seqnum[3] = seq.ccmp.pn[2]; wsm_key->aes_group.rx_seqnum[4] = seq.ccmp.pn[1]; wsm_key->aes_group.rx_seqnum[5] = seq.ccmp.pn[0]; wsm_key->aes_group.rx_seqnum[6] = 0; wsm_key->aes_group.rx_seqnum[7] = 0; wsm_key->aes_group.keyid = key->keyidx; } break; case WLAN_CIPHER_SUITE_SMS4: if (pairwise) { wsm_key->type = WSM_KEY_TYPE_WAPI_PAIRWISE; memcpy(wsm_key->wapi_pairwise.peer, peer_addr, ETH_ALEN); memcpy(wsm_key->wapi_pairwise.keydata, &key->key[0], 16); memcpy(wsm_key->wapi_pairwise.mic_key, &key->key[16], 16); wsm_key->wapi_pairwise.keyid = key->keyidx; } else { wsm_key->type = WSM_KEY_TYPE_WAPI_GROUP; memcpy(wsm_key->wapi_group.keydata, &key->key[0], 16); memcpy(wsm_key->wapi_group.mic_key, &key->key[16], 16); wsm_key->wapi_group.keyid = key->keyidx; } break; default: pr_warn("Unhandled key type %d\n", key->cipher); cw1200_free_key(priv, idx); ret = -EOPNOTSUPP; goto finally; } ret = wsm_add_key(priv, wsm_key); if (!ret) key->hw_key_idx = idx; else cw1200_free_key(priv, idx); } else if (cmd == DISABLE_KEY) { struct wsm_remove_key wsm_key = { .index = key->hw_key_idx, }; if (wsm_key.index > WSM_KEY_MAX_INDEX) { ret = -EINVAL; goto finally; } cw1200_free_key(priv, wsm_key.index); ret = wsm_remove_key(priv, &wsm_key); } else { pr_warn("Unhandled key command %d\n", cmd); } finally: mutex_unlock(&priv->conf_mutex); return ret; } void cw1200_wep_key_work(struct work_struct *work) { struct cw1200_common *priv = container_of(work, struct cw1200_common, wep_key_work); u8 queue_id = cw1200_queue_get_queue_id(priv->pending_frame_id); struct cw1200_queue *queue = &priv->tx_queue[queue_id]; __le32 wep_default_key_id = __cpu_to_le32( priv->wep_default_key_id); pr_debug("[STA] Setting default WEP key: %d\n", priv->wep_default_key_id); wsm_flush_tx(priv); wsm_write_mib(priv, WSM_MIB_ID_DOT11_WEP_DEFAULT_KEY_ID, &wep_default_key_id, sizeof(wep_default_key_id)); cw1200_queue_requeue(queue, priv->pending_frame_id); wsm_unlock_tx(priv); } int cw1200_set_rts_threshold(struct ieee80211_hw *hw, u32 value) { int ret = 0; __le32 val32; struct cw1200_common *priv = hw->priv; if (priv->mode == NL80211_IFTYPE_UNSPECIFIED) return 0; if (value != (u32) -1) val32 = __cpu_to_le32(value); else val32 = 0; /* disabled */ if (priv->mode == NL80211_IFTYPE_UNSPECIFIED) { /* device is down, can _not_ set threshold */ ret = -ENODEV; goto out; } if (priv->rts_threshold == value) goto out; pr_debug("[STA] Setting RTS threshold: %d\n", priv->rts_threshold); /* mutex_lock(&priv->conf_mutex); */ ret = wsm_write_mib(priv, WSM_MIB_ID_DOT11_RTS_THRESHOLD, &val32, sizeof(val32)); if (!ret) priv->rts_threshold = value; /* mutex_unlock(&priv->conf_mutex); */ out: return ret; } /* If successful, LOCKS the TX queue! */ static int __cw1200_flush(struct cw1200_common *priv, bool drop) { int i, ret; for (;;) { /* TODO: correct flush handling is required when dev_stop. * Temporary workaround: 2s */ if (drop) { for (i = 0; i < 4; ++i) cw1200_queue_clear(&priv->tx_queue[i]); } else { ret = wait_event_timeout( priv->tx_queue_stats.wait_link_id_empty, cw1200_queue_stats_is_empty( &priv->tx_queue_stats, -1), 2 * HZ); } if (!drop && ret <= 0) { ret = -ETIMEDOUT; break; } else { ret = 0; } wsm_lock_tx(priv); if (!cw1200_queue_stats_is_empty(&priv->tx_queue_stats, -1)) { /* Highly unlikely: WSM requeued frames. */ wsm_unlock_tx(priv); continue; } break; } return ret; } void cw1200_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u32 queues, bool drop) { struct cw1200_common *priv = hw->priv; switch (priv->mode) { case NL80211_IFTYPE_MONITOR: drop = true; break; case NL80211_IFTYPE_AP: if (!priv->enable_beacon) drop = true; break; } if (!__cw1200_flush(priv, drop)) wsm_unlock_tx(priv); return; } /* ******************************************************************** */ /* WSM callbacks */ void cw1200_free_event_queue(struct cw1200_common *priv) { LIST_HEAD(list); spin_lock(&priv->event_queue_lock); list_splice_init(&priv->event_queue, &list); spin_unlock(&priv->event_queue_lock); __cw1200_free_event_queue(&list); } void cw1200_event_handler(struct work_struct *work) { struct cw1200_common *priv = container_of(work, struct cw1200_common, event_handler); struct cw1200_wsm_event *event; LIST_HEAD(list); spin_lock(&priv->event_queue_lock); list_splice_init(&priv->event_queue, &list); spin_unlock(&priv->event_queue_lock); list_for_each_entry(event, &list, link) { switch (event->evt.id) { case WSM_EVENT_ERROR: pr_err("Unhandled WSM Error from LMAC\n"); break; case WSM_EVENT_BSS_LOST: pr_debug("[CQM] BSS lost.\n"); cancel_work_sync(&priv->unjoin_work); if (!down_trylock(&priv->scan.lock)) { cw1200_cqm_bssloss_sm(priv, 1, 0, 0); up(&priv->scan.lock); } else { /* Scan is in progress. Delay reporting. * Scan complete will trigger bss_loss_work */ priv->delayed_link_loss = 1; /* Also start a watchdog. */ queue_delayed_work(priv->workqueue, &priv->bss_loss_work, 5*HZ); } break; case WSM_EVENT_BSS_REGAINED: pr_debug("[CQM] BSS regained.\n"); cw1200_cqm_bssloss_sm(priv, 0, 0, 0); cancel_work_sync(&priv->unjoin_work); break; case WSM_EVENT_RADAR_DETECTED: wiphy_info(priv->hw->wiphy, "radar pulse detected\n"); break; case WSM_EVENT_RCPI_RSSI: { /* RSSI: signed Q8.0, RCPI: unsigned Q7.1 * RSSI = RCPI / 2 - 110 */ int rcpi_rssi = (int)(event->evt.data & 0xFF); int cqm_evt; if (priv->cqm_use_rssi) rcpi_rssi = (s8)rcpi_rssi; else rcpi_rssi = rcpi_rssi / 2 - 110; cqm_evt = (rcpi_rssi <= priv->cqm_rssi_thold) ? NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW : NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH; pr_debug("[CQM] RSSI event: %d.\n", rcpi_rssi); ieee80211_cqm_rssi_notify(priv->vif, cqm_evt, GFP_KERNEL); break; } case WSM_EVENT_BT_INACTIVE: pr_warn("Unhandled BT INACTIVE from LMAC\n"); break; case WSM_EVENT_BT_ACTIVE: pr_warn("Unhandled BT ACTIVE from LMAC\n"); break; } } __cw1200_free_event_queue(&list); } void cw1200_bss_loss_work(struct work_struct *work) { struct cw1200_common *priv = container_of(work, struct cw1200_common, bss_loss_work.work); pr_debug("[CQM] Reporting connection loss.\n"); wsm_lock_tx(priv); if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0) wsm_unlock_tx(priv); } void cw1200_bss_params_work(struct work_struct *work) { struct cw1200_common *priv = container_of(work, struct cw1200_common, bss_params_work); mutex_lock(&priv->conf_mutex); priv->bss_params.reset_beacon_loss = 1; wsm_set_bss_params(priv, &priv->bss_params); priv->bss_params.reset_beacon_loss = 0; mutex_unlock(&priv->conf_mutex); } /* ******************************************************************** */ /* Internal API */ /* This function is called to Parse the SDD file * to extract listen_interval and PTA related information * sdd is a TLV: u8 id, u8 len, u8 data[] */ static int cw1200_parse_sdd_file(struct cw1200_common *priv) { const u8 *p = priv->sdd->data; int ret = 0; while (p + 2 <= priv->sdd->data + priv->sdd->size) { if (p + p[1] + 2 > priv->sdd->data + priv->sdd->size) { pr_warn("Malformed sdd structure\n"); return -1; } switch (p[0]) { case SDD_PTA_CFG_ELT_ID: { u16 v; if (p[1] < 4) { pr_warn("SDD_PTA_CFG_ELT_ID malformed\n"); ret = -1; break; } v = le16_to_cpu(*((__le16 *)(p + 2))); if (!v) /* non-zero means this is enabled */ break; v = le16_to_cpu(*((__le16 *)(p + 4))); priv->conf_listen_interval = (v >> 7) & 0x1F; pr_debug("PTA found; Listen Interval %d\n", priv->conf_listen_interval); break; } case SDD_REFERENCE_FREQUENCY_ELT_ID: { u16 clk = le16_to_cpu(*((__le16 *)(p + 2))); if (clk != priv->hw_refclk) pr_warn("SDD file doesn't match configured refclk (%d vs %d)\n", clk, priv->hw_refclk); break; } default: break; } p += p[1] + 2; } if (!priv->bt_present) { pr_debug("PTA element NOT found.\n"); priv->conf_listen_interval = 0; } return ret; } int cw1200_setup_mac(struct cw1200_common *priv) { int ret = 0; /* NOTE: There is a bug in FW: it reports signal * as RSSI if RSSI subscription is enabled. * It's not enough to set WSM_RCPI_RSSI_USE_RSSI. * * NOTE2: RSSI based reports have been switched to RCPI, since * FW has a bug and RSSI reported values are not stable, * what can leads to signal level oscilations in user-end applications */ struct wsm_rcpi_rssi_threshold threshold = { .rssiRcpiMode = WSM_RCPI_RSSI_THRESHOLD_ENABLE | WSM_RCPI_RSSI_DONT_USE_UPPER | WSM_RCPI_RSSI_DONT_USE_LOWER, .rollingAverageCount = 16, }; struct wsm_configuration cfg = { .dot11StationId = &priv->mac_addr[0], }; /* Remember the decission here to make sure, we will handle * the RCPI/RSSI value correctly on WSM_EVENT_RCPI_RSS */ if (threshold.rssiRcpiMode & WSM_RCPI_RSSI_USE_RSSI) priv->cqm_use_rssi = true; if (!priv->sdd) { ret = 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 == IEEE80211_BAND_5GHZ) ? WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G; memcpy(join.bssid, bssid, sizeof(join.bssid)); pr_debug("[STA] Join BSSID: %pM DTIM: %d, interval: %d\n", join.bssid, join.dtim_period, priv->beacon_int); if (!conf->ibss_joined) { const u8 *ssidie; rcu_read_lock(); ssidie = ieee80211_bss_get_ie(bss, WLAN_EID_SSID); if (ssidie) { join.ssid_len = ssidie[1]; memcpy(join.ssid, &ssidie[2], join.ssid_len); } rcu_read_unlock(); } if (priv->vif->p2p) { join.flags |= WSM_JOIN_FLAGS_P2P_GO; join.basic_rate_set = cw1200_rate_mask_to_wsm(priv, 0xFF0); } /* Enable asynchronous join calls */ if (!conf->ibss_joined) { join.flags |= WSM_JOIN_FLAGS_FORCE; join.flags |= WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND; } wsm_flush_tx(priv); /* Stay Awake for Join and Auth Timeouts and a bit more */ cw1200_pm_stay_awake(&priv->pm_state, CW1200_JOIN_TIMEOUT + CW1200_AUTH_TIMEOUT); cw1200_update_listening(priv, false); /* Turn on Block ACKs */ wsm_set_block_ack_policy(priv, priv->ba_tx_tid_mask, priv->ba_rx_tid_mask); /* Set up timeout */ if (join.flags & WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND) { priv->join_status = CW1200_JOIN_STATUS_JOINING; queue_delayed_work(priv->workqueue, &priv->join_timeout, CW1200_JOIN_TIMEOUT); } /* 802.11w protected mgmt frames */ mgmt_policy.protectedMgmtEnable = 0; mgmt_policy.unprotectedMgmtFramesAllowed = 1; mgmt_policy.encryptionForAuthFrame = 1; wsm_set_protected_mgmt_policy(priv, &mgmt_policy); /* Perform actual join */ if (wsm_join(priv, &join)) { pr_err("[STA] cw1200_join_work: wsm_join failed!\n"); cancel_delayed_work_sync(&priv->join_timeout); cw1200_update_listening(priv, priv->listening); /* Tx lock still held, unjoin will clear it. */ if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0) wsm_unlock_tx(priv); } else { if (!(join.flags & WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND)) cw1200_join_complete(priv); /* Will clear tx_lock */ /* Upload keys */ cw1200_upload_keys(priv); /* Due to beacon filtering it is possible that the * AP's beacon is not known for the mac80211 stack. * Disable filtering temporary to make sure the stack * receives at least one */ priv->disable_beacon_filter = true; } cw1200_update_filtering(priv); done_put: mutex_unlock(&priv->conf_mutex); if (bss) cfg80211_put_bss(priv->hw->wiphy, bss); } void cw1200_join_timeout(struct work_struct *work) { struct cw1200_common *priv = container_of(work, struct cw1200_common, join_timeout.work); pr_debug("[WSM] Join timed out.\n"); wsm_lock_tx(priv); if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0) wsm_unlock_tx(priv); } static void cw1200_do_unjoin(struct cw1200_common *priv) { struct wsm_reset reset = { .reset_statistics = true, }; cancel_delayed_work_sync(&priv->join_timeout); mutex_lock(&priv->conf_mutex); priv->join_pending = false; if (atomic_read(&priv->scan.in_progress)) { if (priv->delayed_unjoin) wiphy_dbg(priv->hw->wiphy, "Delayed unjoin is already scheduled.\n"); else priv->delayed_unjoin = true; goto done; } priv->delayed_link_loss = false; if (!priv->join_status) goto done; if (priv->join_status == CW1200_JOIN_STATUS_AP) goto done; cancel_work_sync(&priv->update_filtering_work); cancel_work_sync(&priv->set_beacon_wakeup_period_work); priv->join_status = CW1200_JOIN_STATUS_PASSIVE; /* Unjoin is a reset. */ wsm_flush_tx(priv); wsm_keep_alive_period(priv, 0); wsm_reset(priv, &reset); wsm_set_output_power(priv, priv->output_power * 10); priv->join_dtim_period = 0; cw1200_setup_mac(priv); cw1200_free_event_queue(priv); cancel_work_sync(&priv->event_handler); cw1200_update_listening(priv, priv->listening); cw1200_cqm_bssloss_sm(priv, 0, 0, 0); /* Disable Block ACKs */ wsm_set_block_ack_policy(priv, 0, 0); priv->disable_beacon_filter = false; cw1200_update_filtering(priv); memset(&priv->association_mode, 0, sizeof(priv->association_mode)); memset(&priv->bss_params, 0, sizeof(priv->bss_params)); priv->setbssparams_done = false; memset(&priv->firmware_ps_mode, 0, sizeof(priv->firmware_ps_mode)); pr_debug("[STA] Unjoin completed.\n"); done: mutex_unlock(&priv->conf_mutex); } void cw1200_unjoin_work(struct work_struct *work) { struct cw1200_common *priv = container_of(work, struct cw1200_common, unjoin_work); cw1200_do_unjoin(priv); /* Tell the stack we're dead */ ieee80211_connection_loss(priv->vif); wsm_unlock_tx(priv); } int cw1200_enable_listening(struct cw1200_common *priv) { struct wsm_start start = { .mode = WSM_START_MODE_P2P_DEV, .band = WSM_PHY_BAND_2_4G, .beacon_interval = 100, .dtim_period = 1, .probe_delay = 0, .basic_rate_set = 0x0F, }; if (priv->channel) { start.band = priv->channel->band == IEEE80211_BAND_5GHZ ? WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G; start.channel_number = priv->channel->hw_value; } else { start.band = WSM_PHY_BAND_2_4G; start.channel_number = 1; } return wsm_start(priv, &start); } int cw1200_disable_listening(struct cw1200_common *priv) { int ret; struct wsm_reset reset = { .reset_statistics = true, }; ret = wsm_reset(priv, &reset); return ret; } void cw1200_update_listening(struct cw1200_common *priv, bool enabled) { if (enabled) { if (priv->join_status == CW1200_JOIN_STATUS_PASSIVE) { if (!cw1200_enable_listening(priv)) priv->join_status = CW1200_JOIN_STATUS_MONITOR; wsm_set_probe_responder(priv, true); } } else { if (priv->join_status == CW1200_JOIN_STATUS_MONITOR) { if (!cw1200_disable_listening(priv)) priv->join_status = CW1200_JOIN_STATUS_PASSIVE; wsm_set_probe_responder(priv, false); } } } int cw1200_set_uapsd_param(struct cw1200_common *priv, const struct wsm_edca_params *arg) { int ret; u16 uapsd_flags = 0; /* Here's the mapping AC [queue, bit] * VO [0,3], VI [1, 2], BE [2, 1], BK [3, 0] */ if (arg->uapsd_enable[0]) uapsd_flags |= 1 << 3; if (arg->uapsd_enable[1]) uapsd_flags |= 1 << 2; if (arg->uapsd_enable[2]) uapsd_flags |= 1 << 1; if (arg->uapsd_enable[3]) uapsd_flags |= 1; /* Currently pseudo U-APSD operation is not supported, so setting * MinAutoTriggerInterval, MaxAutoTriggerInterval and * AutoTriggerStep to 0 */ priv->uapsd_info.uapsd_flags = cpu_to_le16(uapsd_flags); priv->uapsd_info.min_auto_trigger_interval = 0; priv->uapsd_info.max_auto_trigger_interval = 0; priv->uapsd_info.auto_trigger_step = 0; ret = wsm_set_uapsd_info(priv, &priv->uapsd_info); return ret; } /* ******************************************************************** */ /* AP API */ int cw1200_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta) { struct cw1200_common *priv = hw->priv; struct cw1200_sta_priv *sta_priv = (struct cw1200_sta_priv *)&sta->drv_priv; struct cw1200_link_entry *entry; struct sk_buff *skb; if (priv->mode != NL80211_IFTYPE_AP) return 0; sta_priv->link_id = cw1200_find_link_id(priv, sta->addr); if (WARN_ON(!sta_priv->link_id)) { wiphy_info(priv->hw->wiphy, "[AP] No more link IDs available.\n"); return -ENOENT; } entry = &priv->link_id_db[sta_priv->link_id - 1]; spin_lock_bh(&priv->ps_state_lock); if ((sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) == IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) priv->sta_asleep_mask |= BIT(sta_priv->link_id); entry->status = CW1200_LINK_HARD; while ((skb = skb_dequeue(&entry->rx_queue))) ieee80211_rx_irqsafe(priv->hw, skb); spin_unlock_bh(&priv->ps_state_lock); return 0; } int cw1200_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta) { struct cw1200_common *priv = hw->priv; struct cw1200_sta_priv *sta_priv = (struct cw1200_sta_priv *)&sta->drv_priv; struct cw1200_link_entry *entry; if (priv->mode != NL80211_IFTYPE_AP || !sta_priv->link_id) return 0; entry = &priv->link_id_db[sta_priv->link_id - 1]; spin_lock_bh(&priv->ps_state_lock); entry->status = CW1200_LINK_RESERVE; entry->timestamp = jiffies; wsm_lock_tx_async(priv); if (queue_work(priv->workqueue, &priv->link_id_work) <= 0) wsm_unlock_tx(priv); spin_unlock_bh(&priv->ps_state_lock); flush_workqueue(priv->workqueue); return 0; } static void __cw1200_sta_notify(struct ieee80211_hw *dev, struct ieee80211_vif *vif, enum sta_notify_cmd notify_cmd, int link_id) { struct cw1200_common *priv = dev->priv; u32 bit, prev; /* Zero link id means "for all link IDs" */ if (link_id) bit = BIT(link_id); else if (WARN_ON_ONCE(notify_cmd != STA_NOTIFY_AWAKE)) bit = 0; else bit = priv->link_id_map; prev = priv->sta_asleep_mask & bit; switch (notify_cmd) { case STA_NOTIFY_SLEEP: if (!prev) { if (priv->buffered_multicasts && !priv->sta_asleep_mask) queue_work(priv->workqueue, &priv->multicast_start_work); priv->sta_asleep_mask |= bit; } break; case STA_NOTIFY_AWAKE: if (prev) { priv->sta_asleep_mask &= ~bit; priv->pspoll_mask &= ~bit; if (priv->tx_multicast && link_id && !priv->sta_asleep_mask) queue_work(priv->workqueue, &priv->multicast_stop_work); cw1200_bh_wakeup(priv); } break; } } void cw1200_sta_notify(struct ieee80211_hw *dev, struct ieee80211_vif *vif, enum sta_notify_cmd notify_cmd, struct ieee80211_sta *sta) { struct cw1200_common *priv = dev->priv; struct cw1200_sta_priv *sta_priv = (struct cw1200_sta_priv *)&sta->drv_priv; spin_lock_bh(&priv->ps_state_lock); __cw1200_sta_notify(dev, vif, notify_cmd, sta_priv->link_id); spin_unlock_bh(&priv->ps_state_lock); } static void cw1200_ps_notify(struct cw1200_common *priv, int link_id, bool ps) { if (link_id > CW1200_MAX_STA_IN_AP_MODE) return; pr_debug("%s for LinkId: %d. STAs asleep: %.8X\n", ps ? "Stop" : "Start", link_id, priv->sta_asleep_mask); __cw1200_sta_notify(priv->hw, priv->vif, ps ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, link_id); } static int cw1200_set_tim_impl(struct cw1200_common *priv, bool aid0_bit_set) { struct sk_buff *skb; struct wsm_update_ie update_ie = { .what = WSM_UPDATE_IE_BEACON, .count = 1, }; u16 tim_offset, tim_length; pr_debug("[AP] mcast: %s.\n", aid0_bit_set ? "ena" : "dis"); skb = ieee80211_beacon_get_tim(priv->hw, priv->vif, &tim_offset, &tim_length); if (!skb) { if (!__cw1200_flush(priv, true)) wsm_unlock_tx(priv); return -ENOENT; } if (tim_offset && tim_length >= 6) { /* Ignore DTIM count from mac80211: * firmware handles DTIM internally. */ skb->data[tim_offset + 2] = 0; /* Set/reset aid0 bit */ if (aid0_bit_set) skb->data[tim_offset + 4] |= 1; else skb->data[tim_offset + 4] &= ~1; } update_ie.ies = &skb->data[tim_offset]; update_ie.length = tim_length; wsm_update_ie(priv, &update_ie); dev_kfree_skb(skb); return 0; } void cw1200_set_tim_work(struct work_struct *work) { struct cw1200_common *priv = container_of(work, struct cw1200_common, set_tim_work); (void)cw1200_set_tim_impl(priv, priv->aid0_bit_set); } int cw1200_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta, bool set) { struct cw1200_common *priv = dev->priv; queue_work(priv->workqueue, &priv->set_tim_work); return 0; } void cw1200_set_cts_work(struct work_struct *work) { struct cw1200_common *priv = container_of(work, struct cw1200_common, set_cts_work); u8 erp_ie[3] = {WLAN_EID_ERP_INFO, 0x1, 0}; struct wsm_update_ie update_ie = { .what = WSM_UPDATE_IE_BEACON, .count = 1, .ies = erp_ie, .length = 3, }; u32 erp_info; __le32 use_cts_prot; mutex_lock(&priv->conf_mutex); erp_info = priv->erp_info; mutex_unlock(&priv->conf_mutex); use_cts_prot = erp_info & WLAN_ERP_USE_PROTECTION ? __cpu_to_le32(1) : 0; erp_ie[ERP_INFO_BYTE_OFFSET] = erp_info; pr_debug("[STA] ERP information 0x%x\n", erp_info); wsm_write_mib(priv, WSM_MIB_ID_NON_ERP_PROTECTION, &use_cts_prot, sizeof(use_cts_prot)); wsm_update_ie(priv, &update_ie); return; } static int cw1200_set_btcoexinfo(struct cw1200_common *priv) { struct wsm_override_internal_txrate arg; int ret = 0; if (priv->mode == NL80211_IFTYPE_STATION) { /* Plumb PSPOLL and NULL template */ cw1200_upload_pspoll(priv); cw1200_upload_null(priv); cw1200_upload_qosnull(priv); } else { return 0; } memset(&arg, 0, sizeof(struct wsm_override_internal_txrate)); if (!priv->vif->p2p) { /* STATION mode */ if (priv->bss_params.operational_rate_set & ~0xF) { pr_debug("[STA] STA has ERP rates\n"); /* G or BG mode */ arg.internalTxRate = (__ffs( priv->bss_params.operational_rate_set & ~0xF)); } else { pr_debug("[STA] STA has non ERP rates\n"); /* B only mode */ arg.internalTxRate = (__ffs(le32_to_cpu(priv->association_mode.basic_rate_set))); } arg.nonErpInternalTxRate = (__ffs(le32_to_cpu(priv->association_mode.basic_rate_set))); } else { /* P2P mode */ arg.internalTxRate = (__ffs(priv->bss_params.operational_rate_set & ~0xF)); arg.nonErpInternalTxRate = (__ffs(priv->bss_params.operational_rate_set & ~0xF)); } pr_debug("[STA] BTCOEX_INFO MODE %d, internalTxRate : %x, nonErpInternalTxRate: %x\n", priv->mode, arg.internalTxRate, arg.nonErpInternalTxRate); ret = wsm_write_mib(priv, WSM_MIB_ID_OVERRIDE_INTERNAL_TX_RATE, &arg, sizeof(arg)); return ret; } void cw1200_bss_info_changed(struct ieee80211_hw *dev, struct ieee80211_vif *vif, struct ieee80211_bss_conf *info, u32 changed) { struct cw1200_common *priv = dev->priv; bool do_join = false; mutex_lock(&priv->conf_mutex); pr_debug("BSS CHANGED: %08x\n", changed); /* TODO: BSS_CHANGED_QOS */ /* TODO: BSS_CHANGED_TXPOWER */ if (changed & BSS_CHANGED_ARP_FILTER) { struct wsm_mib_arp_ipv4_filter filter = {0}; int i; pr_debug("[STA] BSS_CHANGED_ARP_FILTER cnt: %d\n", info->arp_addr_cnt); /* Currently only one IP address is supported by firmware. * In case of more IPs arp filtering will be disabled. */ if (info->arp_addr_cnt > 0 && info->arp_addr_cnt <= WSM_MAX_ARP_IP_ADDRTABLE_ENTRIES) { for (i = 0; i < info->arp_addr_cnt; i++) { filter.ipv4addrs[i] = info->arp_addr_list[i]; pr_debug("[STA] addr[%d]: 0x%X\n", i, filter.ipv4addrs[i]); } filter.enable = __cpu_to_le32(1); } pr_debug("[STA] arp ip filter enable: %d\n", __le32_to_cpu(filter.enable)); wsm_set_arp_ipv4_filter(priv, &filter); } if (changed & (BSS_CHANGED_BEACON | BSS_CHANGED_AP_PROBE_RESP | BSS_CHANGED_BSSID | BSS_CHANGED_SSID | BSS_CHANGED_IBSS)) { pr_debug("BSS_CHANGED_BEACON\n"); priv->beacon_int = info->beacon_int; cw1200_update_beaconing(priv); cw1200_upload_beacon(priv); } if (changed & BSS_CHANGED_BEACON_ENABLED) { pr_debug("BSS_CHANGED_BEACON_ENABLED (%d)\n", info->enable_beacon); if (priv->enable_beacon != info->enable_beacon) { cw1200_enable_beaconing(priv, info->enable_beacon); priv->enable_beacon = info->enable_beacon; } } if (changed & BSS_CHANGED_BEACON_INT) { pr_debug("CHANGED_BEACON_INT\n"); if (info->ibss_joined) do_join = true; else if (priv->join_status == CW1200_JOIN_STATUS_AP) cw1200_update_beaconing(priv); } /* assoc/disassoc, or maybe AID changed */ if (changed & BSS_CHANGED_ASSOC) { wsm_lock_tx(priv); priv->wep_default_key_id = -1; wsm_unlock_tx(priv); } if (changed & BSS_CHANGED_BSSID) { pr_debug("BSS_CHANGED_BSSID\n"); do_join = true; } if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BSSID | BSS_CHANGED_IBSS | BSS_CHANGED_BASIC_RATES | BSS_CHANGED_HT)) { pr_debug("BSS_CHANGED_ASSOC\n"); if (info->assoc) { if (priv->join_status < CW1200_JOIN_STATUS_PRE_STA) { ieee80211_connection_loss(vif); mutex_unlock(&priv->conf_mutex); return; } else if (priv->join_status == CW1200_JOIN_STATUS_PRE_STA) { priv->join_status = CW1200_JOIN_STATUS_STA; } } else { do_join = true; } if (info->assoc || info->ibss_joined) { struct ieee80211_sta *sta = NULL; __le32 htprot = 0; if (info->dtim_period) priv->join_dtim_period = info->dtim_period; priv->beacon_int = info->beacon_int; rcu_read_lock(); if (info->bssid && !info->ibss_joined) sta = ieee80211_find_sta(vif, info->bssid); if (sta) { priv->ht_info.ht_cap = sta->ht_cap; priv->bss_params.operational_rate_set = cw1200_rate_mask_to_wsm(priv, sta->supp_rates[priv->channel->band]); priv->ht_info.channel_type = cfg80211_get_chandef_type(&dev->conf.chandef); priv->ht_info.operation_mode = info->ht_operation_mode; } else { memset(&priv->ht_info, 0, sizeof(priv->ht_info)); priv->bss_params.operational_rate_set = -1; } rcu_read_unlock(); /* Non Greenfield stations present */ if (priv->ht_info.operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT) htprot |= cpu_to_le32(WSM_NON_GREENFIELD_STA_PRESENT); /* Set HT protection method */ htprot |= cpu_to_le32((priv->ht_info.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION) << 2); /* TODO: * STBC_param.dual_cts * STBC_param.LSIG_TXOP_FILL */ wsm_write_mib(priv, WSM_MIB_ID_SET_HT_PROTECTION, &htprot, sizeof(htprot)); priv->association_mode.greenfield = cw1200_ht_greenfield(&priv->ht_info); priv->association_mode.flags = WSM_ASSOCIATION_MODE_SNOOP_ASSOC_FRAMES | WSM_ASSOCIATION_MODE_USE_PREAMBLE_TYPE | WSM_ASSOCIATION_MODE_USE_HT_MODE | WSM_ASSOCIATION_MODE_USE_BASIC_RATE_SET | WSM_ASSOCIATION_MODE_USE_MPDU_START_SPACING; priv->association_mode.preamble = info->use_short_preamble ? WSM_JOIN_PREAMBLE_SHORT : WSM_JOIN_PREAMBLE_LONG; priv->association_mode.basic_rate_set = __cpu_to_le32( cw1200_rate_mask_to_wsm(priv, info->basic_rates)); priv->association_mode.mpdu_start_spacing = cw1200_ht_ampdu_density(&priv->ht_info); cw1200_cqm_bssloss_sm(priv, 0, 0, 0); cancel_work_sync(&priv->unjoin_work); priv->bss_params.beacon_lost_count = priv->cqm_beacon_loss_count; priv->bss_params.aid = info->aid; if (priv->join_dtim_period < 1) priv->join_dtim_period = 1; pr_debug("[STA] DTIM %d, interval: %d\n", priv->join_dtim_period, priv->beacon_int); pr_debug("[STA] Preamble: %d, Greenfield: %d, Aid: %d, Rates: 0x%.8X, Basic: 0x%.8X\n", priv->association_mode.preamble, priv->association_mode.greenfield, priv->bss_params.aid, priv->bss_params.operational_rate_set, priv->association_mode.basic_rate_set); wsm_set_association_mode(priv, &priv->association_mode); if (!info->ibss_joined) { wsm_keep_alive_period(priv, 30 /* sec */); wsm_set_bss_params(priv, &priv->bss_params); priv->setbssparams_done = true; cw1200_set_beacon_wakeup_period_work(&priv->set_beacon_wakeup_period_work); cw1200_set_pm(priv, &priv->powersave_mode); } if (priv->vif->p2p) { pr_debug("[STA] Setting p2p powersave configuration.\n"); wsm_set_p2p_ps_modeinfo(priv, &priv->p2p_ps_modeinfo); } if (priv->bt_present) cw1200_set_btcoexinfo(priv); } else { memset(&priv->association_mode, 0, sizeof(priv->association_mode)); memset(&priv->bss_params, 0, sizeof(priv->bss_params)); } } /* ERP Protection */ if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_ERP_PREAMBLE)) { u32 prev_erp_info = priv->erp_info; if (info->use_cts_prot) priv->erp_info |= WLAN_ERP_USE_PROTECTION; else if (!(prev_erp_info & WLAN_ERP_NON_ERP_PRESENT)) priv->erp_info &= ~WLAN_ERP_USE_PROTECTION; if (info->use_short_preamble) priv->erp_info |= WLAN_ERP_BARKER_PREAMBLE; else priv->erp_info &= ~WLAN_ERP_BARKER_PREAMBLE; pr_debug("[STA] ERP Protection: %x\n", priv->erp_info); if (prev_erp_info != priv->erp_info) queue_work(priv->workqueue, &priv->set_cts_work); } /* ERP Slottime */ if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_SLOT)) { __le32 slot_time = info->use_short_slot ? __cpu_to_le32(9) : __cpu_to_le32(20); pr_debug("[STA] Slot time: %d us.\n", __le32_to_cpu(slot_time)); wsm_write_mib(priv, WSM_MIB_ID_DOT11_SLOT_TIME, &slot_time, sizeof(slot_time)); } if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_CQM)) { struct wsm_rcpi_rssi_threshold threshold = { .rollingAverageCount = 8, }; pr_debug("[CQM] RSSI threshold subscribe: %d +- %d\n", info->cqm_rssi_thold, info->cqm_rssi_hyst); priv->cqm_rssi_thold = info->cqm_rssi_thold; priv->cqm_rssi_hyst = info->cqm_rssi_hyst; if (info->cqm_rssi_thold || info->cqm_rssi_hyst) { /* RSSI subscription enabled */ /* TODO: It's not a correct way of setting threshold. * Upper and lower must be set equal here and adjusted * in callback. However current implementation is much * more relaible and stable. */ /* RSSI: signed Q8.0, RCPI: unsigned Q7.1 * RSSI = RCPI / 2 - 110 */ if (priv->cqm_use_rssi) { threshold.upperThreshold = info->cqm_rssi_thold + info->cqm_rssi_hyst; threshold.lowerThreshold = info->cqm_rssi_thold; threshold.rssiRcpiMode |= WSM_RCPI_RSSI_USE_RSSI; } else { threshold.upperThreshold = (info->cqm_rssi_thold + info->cqm_rssi_hyst + 110) * 2; threshold.lowerThreshold = (info->cqm_rssi_thold + 110) * 2; } threshold.rssiRcpiMode |= WSM_RCPI_RSSI_THRESHOLD_ENABLE; } else { /* There is a bug in FW, see sta.c. We have to enable * dummy subscription to get correct RSSI values. */ threshold.rssiRcpiMode |= WSM_RCPI_RSSI_THRESHOLD_ENABLE | WSM_RCPI_RSSI_DONT_USE_UPPER | WSM_RCPI_RSSI_DONT_USE_LOWER; if (priv->cqm_use_rssi) threshold.rssiRcpiMode |= WSM_RCPI_RSSI_USE_RSSI; } wsm_set_rcpi_rssi_threshold(priv, &threshold); } mutex_unlock(&priv->conf_mutex); if (do_join) { wsm_lock_tx(priv); cw1200_do_join(priv); /* Will unlock it for us */ } } void cw1200_multicast_start_work(struct work_struct *work) { struct cw1200_common *priv = container_of(work, struct cw1200_common, multicast_start_work); long tmo = priv->join_dtim_period * (priv->beacon_int + 20) * HZ / 1024; cancel_work_sync(&priv->multicast_stop_work); if (!priv->aid0_bit_set) { wsm_lock_tx(priv); cw1200_set_tim_impl(priv, true); priv->aid0_bit_set = true; mod_timer(&priv->mcast_timeout, jiffies + tmo); wsm_unlock_tx(priv); } } void cw1200_multicast_stop_work(struct work_struct *work) { struct cw1200_common *priv = container_of(work, struct cw1200_common, multicast_stop_work); if (priv->aid0_bit_set) { del_timer_sync(&priv->mcast_timeout); wsm_lock_tx(priv); priv->aid0_bit_set = false; cw1200_set_tim_impl(priv, false); wsm_unlock_tx(priv); } } void cw1200_mcast_timeout(unsigned long arg) { struct cw1200_common *priv = (struct cw1200_common *)arg; wiphy_warn(priv->hw->wiphy, "Multicast delivery timeout.\n"); spin_lock_bh(&priv->ps_state_lock); priv->tx_multicast = priv->aid0_bit_set && priv->buffered_multicasts; if (priv->tx_multicast) cw1200_bh_wakeup(priv); spin_unlock_bh(&priv->ps_state_lock); } int cw1200_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif, enum ieee80211_ampdu_mlme_action action, struct ieee80211_sta *sta, u16 tid, u16 *ssn, u8 buf_size, bool amsdu) { /* Aggregation is implemented fully in firmware, * including block ack negotiation. Do not allow * mac80211 stack to do anything: it interferes with * the firmware. */ /* Note that we still need this function stubbed. */ return -ENOTSUPP; } /* ******************************************************************** */ /* WSM callback */ void cw1200_suspend_resume(struct cw1200_common *priv, struct wsm_suspend_resume *arg) { pr_debug("[AP] %s: %s\n", arg->stop ? "stop" : "start", arg->multicast ? "broadcast" : "unicast"); if (arg->multicast) { bool cancel_tmo = false; spin_lock_bh(&priv->ps_state_lock); if (arg->stop) { priv->tx_multicast = false; } else { /* Firmware sends this indication every DTIM if there * is a STA in powersave connected. There is no reason * to suspend, following wakeup will consume much more * power than it could be saved. */ cw1200_pm_stay_awake(&priv->pm_state, priv->join_dtim_period * (priv->beacon_int + 20) * HZ / 1024); priv->tx_multicast = (priv->aid0_bit_set && priv->buffered_multicasts); if (priv->tx_multicast) { cancel_tmo = true; cw1200_bh_wakeup(priv); } } spin_unlock_bh(&priv->ps_state_lock); if (cancel_tmo) del_timer_sync(&priv->mcast_timeout); } else { spin_lock_bh(&priv->ps_state_lock); cw1200_ps_notify(priv, arg->link_id, arg->stop); spin_unlock_bh(&priv->ps_state_lock); if (!arg->stop) cw1200_bh_wakeup(priv); } return; } /* ******************************************************************** */ /* AP privates */ static int cw1200_upload_beacon(struct cw1200_common *priv) { int ret = 0; struct ieee80211_mgmt *mgmt; struct wsm_template_frame frame = { .frame_type = WSM_FRAME_TYPE_BEACON, }; u16 tim_offset; u16 tim_len; if (priv->mode == NL80211_IFTYPE_STATION || priv->mode == NL80211_IFTYPE_MONITOR || priv->mode == NL80211_IFTYPE_UNSPECIFIED) goto done; if (priv->vif->p2p) frame.rate = WSM_TRANSMIT_RATE_6; frame.skb = ieee80211_beacon_get_tim(priv->hw, priv->vif, &tim_offset, &tim_len); if (!frame.skb) return -ENOMEM; ret = wsm_set_template_frame(priv, &frame); if (ret) goto done; /* TODO: Distill probe resp; remove TIM * and any other beacon-specific IEs */ mgmt = (void *)frame.skb->data; mgmt->frame_control = __cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP); frame.frame_type = WSM_FRAME_TYPE_PROBE_RESPONSE; if (priv->vif->p2p) { ret = wsm_set_probe_responder(priv, true); } else { ret = wsm_set_template_frame(priv, &frame); wsm_set_probe_responder(priv, false); } done: dev_kfree_skb(frame.skb); return ret; } static int cw1200_upload_pspoll(struct cw1200_common *priv) { int ret = 0; struct wsm_template_frame frame = { .frame_type = WSM_FRAME_TYPE_PS_POLL, .rate = 0xFF, }; frame.skb = ieee80211_pspoll_get(priv->hw, priv->vif); if (!frame.skb) return -ENOMEM; ret = wsm_set_template_frame(priv, &frame); dev_kfree_skb(frame.skb); return ret; } static int cw1200_upload_null(struct cw1200_common *priv) { int ret = 0; struct wsm_template_frame frame = { .frame_type = WSM_FRAME_TYPE_NULL, .rate = 0xFF, }; frame.skb = ieee80211_nullfunc_get(priv->hw, priv->vif); if (!frame.skb) return -ENOMEM; ret = wsm_set_template_frame(priv, &frame); dev_kfree_skb(frame.skb); return ret; } static int cw1200_upload_qosnull(struct cw1200_common *priv) { /* TODO: This needs to be implemented struct wsm_template_frame frame = { .frame_type = WSM_FRAME_TYPE_QOS_NULL, .rate = 0xFF, }; frame.skb = ieee80211_qosnullfunc_get(priv->hw, priv->vif); if (!frame.skb) return -ENOMEM; ret = wsm_set_template_frame(priv, &frame); dev_kfree_skb(frame.skb); */ return 0; } static int cw1200_enable_beaconing(struct cw1200_common *priv, bool enable) { struct wsm_beacon_transmit transmit = { .enable_beaconing = enable, }; return wsm_beacon_transmit(priv, &transmit); } static int cw1200_start_ap(struct cw1200_common *priv) { int ret; struct ieee80211_bss_conf *conf = &priv->vif->bss_conf; struct wsm_start start = { .mode = priv->vif->p2p ? WSM_START_MODE_P2P_GO : WSM_START_MODE_AP, .band = (priv->channel->band == IEEE80211_BAND_5GHZ) ? WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G, .channel_number = priv->channel->hw_value, .beacon_interval = conf->beacon_int, .dtim_period = conf->dtim_period, .preamble = conf->use_short_preamble ? WSM_JOIN_PREAMBLE_SHORT : WSM_JOIN_PREAMBLE_LONG, .probe_delay = 100, .basic_rate_set = cw1200_rate_mask_to_wsm(priv, conf->basic_rates), }; struct wsm_operational_mode mode = { .power_mode = cw1200_power_mode, .disable_more_flag_usage = true, }; memset(start.ssid, 0, sizeof(start.ssid)); if (!conf->hidden_ssid) { start.ssid_len = conf->ssid_len; memcpy(start.ssid, conf->ssid, start.ssid_len); } priv->beacon_int = conf->beacon_int; priv->join_dtim_period = conf->dtim_period; memset(&priv->link_id_db, 0, sizeof(priv->link_id_db)); pr_debug("[AP] ch: %d(%d), bcn: %d(%d), brt: 0x%.8X, ssid: %.*s.\n", start.channel_number, start.band, start.beacon_interval, start.dtim_period, start.basic_rate_set, start.ssid_len, start.ssid); ret = wsm_start(priv, &start); if (!ret) ret = cw1200_upload_keys(priv); if (!ret && priv->vif->p2p) { pr_debug("[AP] Setting p2p powersave configuration.\n"); wsm_set_p2p_ps_modeinfo(priv, &priv->p2p_ps_modeinfo); } if (!ret) { wsm_set_block_ack_policy(priv, 0, 0); priv->join_status = CW1200_JOIN_STATUS_AP; cw1200_update_filtering(priv); } wsm_set_operational_mode(priv, &mode); return ret; } static int cw1200_update_beaconing(struct cw1200_common *priv) { struct ieee80211_bss_conf *conf = &priv->vif->bss_conf; struct wsm_reset reset = { .link_id = 0, .reset_statistics = true, }; if (priv->mode == NL80211_IFTYPE_AP) { /* TODO: check if changed channel, band */ if (priv->join_status != CW1200_JOIN_STATUS_AP || priv->beacon_int != conf->beacon_int) { pr_debug("ap restarting\n"); wsm_lock_tx(priv); if (priv->join_status != CW1200_JOIN_STATUS_PASSIVE) wsm_reset(priv, &reset); priv->join_status = CW1200_JOIN_STATUS_PASSIVE; cw1200_start_ap(priv); wsm_unlock_tx(priv); } else pr_debug("ap started join_status: %d\n", priv->join_status); } return 0; }