1 /* 2 * NXP Wireless LAN device driver: AP event handling 3 * 4 * Copyright 2011-2020 NXP 5 * 6 * This software file (the "File") is distributed by NXP 7 * under the terms of the GNU General Public License Version 2, June 1991 8 * (the "License"). You may use, redistribute and/or modify this File in 9 * accordance with the terms and conditions of the License, a copy of which 10 * is available by writing to the Free Software Foundation, Inc., 11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the 12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. 13 * 14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE 16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about 17 * this warranty disclaimer. 18 */ 19 20 #include "decl.h" 21 #include "main.h" 22 #include "11n.h" 23 24 #define MWIFIEX_BSS_START_EVT_FIX_SIZE 12 25 26 static int mwifiex_check_uap_capabilities(struct mwifiex_private *priv, 27 struct sk_buff *event) 28 { 29 int evt_len; 30 u8 *curr; 31 u16 tlv_len; 32 struct mwifiex_ie_types_data *tlv_hdr; 33 struct ieee_types_wmm_parameter *wmm_param_ie = NULL; 34 int mask = IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK; 35 36 priv->wmm_enabled = false; 37 skb_pull(event, MWIFIEX_BSS_START_EVT_FIX_SIZE); 38 evt_len = event->len; 39 curr = event->data; 40 41 mwifiex_dbg_dump(priv->adapter, EVT_D, "uap capabilities:", 42 event->data, event->len); 43 44 skb_push(event, MWIFIEX_BSS_START_EVT_FIX_SIZE); 45 46 while ((evt_len >= sizeof(tlv_hdr->header))) { 47 tlv_hdr = (struct mwifiex_ie_types_data *)curr; 48 tlv_len = le16_to_cpu(tlv_hdr->header.len); 49 50 if (evt_len < tlv_len + sizeof(tlv_hdr->header)) 51 break; 52 53 switch (le16_to_cpu(tlv_hdr->header.type)) { 54 case WLAN_EID_HT_CAPABILITY: 55 priv->ap_11n_enabled = true; 56 break; 57 58 case WLAN_EID_VHT_CAPABILITY: 59 priv->ap_11ac_enabled = true; 60 break; 61 62 case WLAN_EID_VENDOR_SPECIFIC: 63 /* Point the regular IEEE IE 2 bytes into the Marvell IE 64 * and setup the IEEE IE type and length byte fields 65 */ 66 wmm_param_ie = (void *)(curr + 2); 67 wmm_param_ie->vend_hdr.len = (u8)tlv_len; 68 wmm_param_ie->vend_hdr.element_id = 69 WLAN_EID_VENDOR_SPECIFIC; 70 mwifiex_dbg(priv->adapter, EVENT, 71 "info: check uap capabilities:\t" 72 "wmm parameter set count: %d\n", 73 wmm_param_ie->qos_info_bitmap & mask); 74 75 mwifiex_wmm_setup_ac_downgrade(priv); 76 priv->wmm_enabled = true; 77 mwifiex_wmm_setup_queue_priorities(priv, wmm_param_ie); 78 break; 79 80 default: 81 break; 82 } 83 84 curr += (tlv_len + sizeof(tlv_hdr->header)); 85 evt_len -= (tlv_len + sizeof(tlv_hdr->header)); 86 } 87 88 return 0; 89 } 90 91 /* 92 * This function handles AP interface specific events generated by firmware. 93 * 94 * Event specific routines are called by this function based 95 * upon the generated event cause. 96 * 97 * 98 * Events supported for AP - 99 * - EVENT_UAP_STA_ASSOC 100 * - EVENT_UAP_STA_DEAUTH 101 * - EVENT_UAP_BSS_ACTIVE 102 * - EVENT_UAP_BSS_START 103 * - EVENT_UAP_BSS_IDLE 104 * - EVENT_UAP_MIC_COUNTERMEASURES: 105 */ 106 int mwifiex_process_uap_event(struct mwifiex_private *priv) 107 { 108 struct mwifiex_adapter *adapter = priv->adapter; 109 int len, i; 110 u32 eventcause = adapter->event_cause; 111 struct station_info *sinfo; 112 struct mwifiex_assoc_event *event; 113 struct mwifiex_sta_node *node; 114 u8 *deauth_mac; 115 struct host_cmd_ds_11n_batimeout *ba_timeout; 116 u16 ctrl; 117 118 switch (eventcause) { 119 case EVENT_UAP_STA_ASSOC: 120 sinfo = kzalloc(sizeof(*sinfo), GFP_KERNEL); 121 if (!sinfo) 122 return -ENOMEM; 123 124 event = (struct mwifiex_assoc_event *) 125 (adapter->event_body + MWIFIEX_UAP_EVENT_EXTRA_HEADER); 126 if (le16_to_cpu(event->type) == TLV_TYPE_UAP_MGMT_FRAME) { 127 len = -1; 128 129 if (ieee80211_is_assoc_req(event->frame_control)) 130 len = 0; 131 else if (ieee80211_is_reassoc_req(event->frame_control)) 132 /* There will be ETH_ALEN bytes of 133 * current_ap_addr before the re-assoc ies. 134 */ 135 len = ETH_ALEN; 136 137 if (len != -1) { 138 sinfo->assoc_req_ies = &event->data[len]; 139 len = (u8 *)sinfo->assoc_req_ies - 140 (u8 *)&event->frame_control; 141 sinfo->assoc_req_ies_len = 142 le16_to_cpu(event->len) - (u16)len; 143 } 144 } 145 cfg80211_new_sta(priv->netdev, event->sta_addr, sinfo, 146 GFP_KERNEL); 147 148 node = mwifiex_add_sta_entry(priv, event->sta_addr); 149 if (!node) { 150 mwifiex_dbg(adapter, ERROR, 151 "could not create station entry!\n"); 152 kfree(sinfo); 153 return -1; 154 } 155 156 if (!priv->ap_11n_enabled) { 157 kfree(sinfo); 158 break; 159 } 160 161 mwifiex_set_sta_ht_cap(priv, sinfo->assoc_req_ies, 162 sinfo->assoc_req_ies_len, node); 163 164 for (i = 0; i < MAX_NUM_TID; i++) { 165 if (node->is_11n_enabled) 166 node->ampdu_sta[i] = 167 priv->aggr_prio_tbl[i].ampdu_user; 168 else 169 node->ampdu_sta[i] = BA_STREAM_NOT_ALLOWED; 170 } 171 memset(node->rx_seq, 0xff, sizeof(node->rx_seq)); 172 kfree(sinfo); 173 break; 174 case EVENT_UAP_STA_DEAUTH: 175 deauth_mac = adapter->event_body + 176 MWIFIEX_UAP_EVENT_EXTRA_HEADER; 177 cfg80211_del_sta(priv->netdev, deauth_mac, GFP_KERNEL); 178 179 if (priv->ap_11n_enabled) { 180 mwifiex_11n_del_rx_reorder_tbl_by_ta(priv, deauth_mac); 181 mwifiex_del_tx_ba_stream_tbl_by_ra(priv, deauth_mac); 182 } 183 mwifiex_wmm_del_peer_ra_list(priv, deauth_mac); 184 mwifiex_del_sta_entry(priv, deauth_mac); 185 break; 186 case EVENT_UAP_BSS_IDLE: 187 priv->media_connected = false; 188 priv->port_open = false; 189 mwifiex_clean_txrx(priv); 190 mwifiex_del_all_sta_list(priv); 191 break; 192 case EVENT_UAP_BSS_ACTIVE: 193 priv->media_connected = true; 194 priv->port_open = true; 195 break; 196 case EVENT_UAP_BSS_START: 197 mwifiex_dbg(adapter, EVENT, 198 "AP EVENT: event id: %#x\n", eventcause); 199 priv->port_open = false; 200 memcpy(priv->netdev->dev_addr, adapter->event_body + 2, 201 ETH_ALEN); 202 if (priv->hist_data) 203 mwifiex_hist_data_reset(priv); 204 mwifiex_check_uap_capabilities(priv, adapter->event_skb); 205 break; 206 case EVENT_UAP_MIC_COUNTERMEASURES: 207 /* For future development */ 208 mwifiex_dbg(adapter, EVENT, 209 "AP EVENT: event id: %#x\n", eventcause); 210 break; 211 case EVENT_AMSDU_AGGR_CTRL: 212 ctrl = get_unaligned_le16(adapter->event_body); 213 mwifiex_dbg(adapter, EVENT, 214 "event: AMSDU_AGGR_CTRL %d\n", ctrl); 215 216 if (priv->media_connected) { 217 adapter->tx_buf_size = 218 min_t(u16, adapter->curr_tx_buf_size, ctrl); 219 mwifiex_dbg(adapter, EVENT, 220 "event: tx_buf_size %d\n", 221 adapter->tx_buf_size); 222 } 223 break; 224 case EVENT_ADDBA: 225 mwifiex_dbg(adapter, EVENT, "event: ADDBA Request\n"); 226 if (priv->media_connected) 227 mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_RSP, 228 HostCmd_ACT_GEN_SET, 0, 229 adapter->event_body, false); 230 break; 231 case EVENT_DELBA: 232 mwifiex_dbg(adapter, EVENT, "event: DELBA Request\n"); 233 if (priv->media_connected) 234 mwifiex_11n_delete_ba_stream(priv, adapter->event_body); 235 break; 236 case EVENT_BA_STREAM_TIEMOUT: 237 mwifiex_dbg(adapter, EVENT, "event: BA Stream timeout\n"); 238 if (priv->media_connected) { 239 ba_timeout = (void *)adapter->event_body; 240 mwifiex_11n_ba_stream_timeout(priv, ba_timeout); 241 } 242 break; 243 case EVENT_EXT_SCAN_REPORT: 244 mwifiex_dbg(adapter, EVENT, "event: EXT_SCAN Report\n"); 245 if (adapter->ext_scan) 246 return mwifiex_handle_event_ext_scan_report(priv, 247 adapter->event_skb->data); 248 break; 249 case EVENT_TX_STATUS_REPORT: 250 mwifiex_dbg(adapter, EVENT, "event: TX_STATUS Report\n"); 251 mwifiex_parse_tx_status_event(priv, adapter->event_body); 252 break; 253 case EVENT_PS_SLEEP: 254 mwifiex_dbg(adapter, EVENT, "info: EVENT: SLEEP\n"); 255 256 adapter->ps_state = PS_STATE_PRE_SLEEP; 257 258 mwifiex_check_ps_cond(adapter); 259 break; 260 261 case EVENT_PS_AWAKE: 262 mwifiex_dbg(adapter, EVENT, "info: EVENT: AWAKE\n"); 263 if (!adapter->pps_uapsd_mode && 264 priv->media_connected && adapter->sleep_period.period) { 265 adapter->pps_uapsd_mode = true; 266 mwifiex_dbg(adapter, EVENT, 267 "event: PPS/UAPSD mode activated\n"); 268 } 269 adapter->tx_lock_flag = false; 270 if (adapter->pps_uapsd_mode && adapter->gen_null_pkt) { 271 if (mwifiex_check_last_packet_indication(priv)) { 272 if (adapter->data_sent || 273 (adapter->if_ops.is_port_ready && 274 !adapter->if_ops.is_port_ready(priv))) { 275 adapter->ps_state = PS_STATE_AWAKE; 276 adapter->pm_wakeup_card_req = false; 277 adapter->pm_wakeup_fw_try = false; 278 break; 279 } 280 if (!mwifiex_send_null_packet 281 (priv, 282 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET | 283 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) 284 adapter->ps_state = 285 PS_STATE_SLEEP; 286 return 0; 287 } 288 } 289 adapter->ps_state = PS_STATE_AWAKE; 290 adapter->pm_wakeup_card_req = false; 291 adapter->pm_wakeup_fw_try = false; 292 break; 293 294 case EVENT_CHANNEL_REPORT_RDY: 295 mwifiex_dbg(adapter, EVENT, "event: Channel Report\n"); 296 mwifiex_11h_handle_chanrpt_ready(priv, adapter->event_skb); 297 break; 298 case EVENT_RADAR_DETECTED: 299 mwifiex_dbg(adapter, EVENT, "event: Radar detected\n"); 300 mwifiex_11h_handle_radar_detected(priv, adapter->event_skb); 301 break; 302 case EVENT_BT_COEX_WLAN_PARA_CHANGE: 303 mwifiex_dbg(adapter, EVENT, "event: BT coex wlan param update\n"); 304 mwifiex_bt_coex_wlan_param_update_event(priv, 305 adapter->event_skb); 306 break; 307 case EVENT_TX_DATA_PAUSE: 308 mwifiex_dbg(adapter, EVENT, "event: TX DATA PAUSE\n"); 309 mwifiex_process_tx_pause_event(priv, adapter->event_skb); 310 break; 311 312 case EVENT_MULTI_CHAN_INFO: 313 mwifiex_dbg(adapter, EVENT, "event: multi-chan info\n"); 314 mwifiex_process_multi_chan_event(priv, adapter->event_skb); 315 break; 316 case EVENT_RXBA_SYNC: 317 dev_dbg(adapter->dev, "EVENT: RXBA_SYNC\n"); 318 mwifiex_11n_rxba_sync_event(priv, adapter->event_body, 319 adapter->event_skb->len - 320 sizeof(eventcause)); 321 break; 322 323 case EVENT_REMAIN_ON_CHAN_EXPIRED: 324 mwifiex_dbg(adapter, EVENT, 325 "event: uap: Remain on channel expired\n"); 326 cfg80211_remain_on_channel_expired(&priv->wdev, 327 priv->roc_cfg.cookie, 328 &priv->roc_cfg.chan, 329 GFP_ATOMIC); 330 memset(&priv->roc_cfg, 0x00, sizeof(struct mwifiex_roc_cfg)); 331 break; 332 333 default: 334 mwifiex_dbg(adapter, EVENT, 335 "event: unknown event id: %#x\n", eventcause); 336 break; 337 } 338 339 return 0; 340 } 341 342 /* This function deletes station entry from associated station list. 343 * Also if both AP and STA are 11n enabled, RxReorder tables and TxBA stream 344 * tables created for this station are deleted. 345 */ 346 void mwifiex_uap_del_sta_data(struct mwifiex_private *priv, 347 struct mwifiex_sta_node *node) 348 { 349 if (priv->ap_11n_enabled && node->is_11n_enabled) { 350 mwifiex_11n_del_rx_reorder_tbl_by_ta(priv, node->mac_addr); 351 mwifiex_del_tx_ba_stream_tbl_by_ra(priv, node->mac_addr); 352 } 353 mwifiex_del_sta_entry(priv, node->mac_addr); 354 355 return; 356 } 357