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