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1/*
2 * Marvell Wireless LAN device driver: AP event handling
3 *
4 * Copyright (C) 2012-2014, Marvell International Ltd.
5 *
6 * This software file (the "File") is distributed by Marvell International
7 * Ltd. 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
26static 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 */
106int 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 */
346void 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}