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
25
26
27 /*
28 * This function handles AP interface specific events generated by firmware.
29 *
30 * Event specific routines are called by this function based
31 * upon the generated event cause.
32 *
33 *
34 * Events supported for AP -
35 * - EVENT_UAP_STA_ASSOC
36 * - EVENT_UAP_STA_DEAUTH
37 * - EVENT_UAP_BSS_ACTIVE
38 * - EVENT_UAP_BSS_START
39 * - EVENT_UAP_BSS_IDLE
40 * - EVENT_UAP_MIC_COUNTERMEASURES:
41 */
mwifiex_process_uap_event(struct mwifiex_private * priv)42 int mwifiex_process_uap_event(struct mwifiex_private *priv)
43 {
44 struct mwifiex_adapter *adapter = priv->adapter;
45 int len, i;
46 u32 eventcause = adapter->event_cause;
47 struct station_info sinfo;
48 struct mwifiex_assoc_event *event;
49 struct mwifiex_sta_node *node;
50 u8 *deauth_mac;
51 struct host_cmd_ds_11n_batimeout *ba_timeout;
52 u16 ctrl;
53
54 switch (eventcause) {
55 case EVENT_UAP_STA_ASSOC:
56 memset(&sinfo, 0, sizeof(sinfo));
57 event = (struct mwifiex_assoc_event *)
58 (adapter->event_body + MWIFIEX_UAP_EVENT_EXTRA_HEADER);
59 if (le16_to_cpu(event->type) == TLV_TYPE_UAP_MGMT_FRAME) {
60 len = -1;
61
62 if (ieee80211_is_assoc_req(event->frame_control))
63 len = 0;
64 else if (ieee80211_is_reassoc_req(event->frame_control))
65 /* There will be ETH_ALEN bytes of
66 * current_ap_addr before the re-assoc ies.
67 */
68 len = ETH_ALEN;
69
70 if (len != -1) {
71 sinfo.assoc_req_ies = &event->data[len];
72 len = (u8 *)sinfo.assoc_req_ies -
73 (u8 *)&event->frame_control;
74 sinfo.assoc_req_ies_len =
75 le16_to_cpu(event->len) - (u16)len;
76 }
77 }
78 cfg80211_new_sta(priv->netdev, event->sta_addr, &sinfo,
79 GFP_KERNEL);
80
81 node = mwifiex_add_sta_entry(priv, event->sta_addr);
82 if (!node) {
83 dev_warn(adapter->dev,
84 "could not create station entry!\n");
85 return -1;
86 }
87
88 if (!priv->ap_11n_enabled)
89 break;
90
91 mwifiex_set_sta_ht_cap(priv, sinfo.assoc_req_ies,
92 sinfo.assoc_req_ies_len, node);
93
94 for (i = 0; i < MAX_NUM_TID; i++) {
95 if (node->is_11n_enabled)
96 node->ampdu_sta[i] =
97 priv->aggr_prio_tbl[i].ampdu_user;
98 else
99 node->ampdu_sta[i] = BA_STREAM_NOT_ALLOWED;
100 }
101 memset(node->rx_seq, 0xff, sizeof(node->rx_seq));
102 break;
103 case EVENT_UAP_STA_DEAUTH:
104 deauth_mac = adapter->event_body +
105 MWIFIEX_UAP_EVENT_EXTRA_HEADER;
106 cfg80211_del_sta(priv->netdev, deauth_mac, GFP_KERNEL);
107
108 if (priv->ap_11n_enabled) {
109 mwifiex_11n_del_rx_reorder_tbl_by_ta(priv, deauth_mac);
110 mwifiex_del_tx_ba_stream_tbl_by_ra(priv, deauth_mac);
111 }
112 mwifiex_wmm_del_peer_ra_list(priv, deauth_mac);
113 mwifiex_del_sta_entry(priv, deauth_mac);
114 break;
115 case EVENT_UAP_BSS_IDLE:
116 priv->media_connected = false;
117 if (netif_carrier_ok(priv->netdev))
118 netif_carrier_off(priv->netdev);
119 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
120
121 mwifiex_clean_txrx(priv);
122 mwifiex_del_all_sta_list(priv);
123 break;
124 case EVENT_UAP_BSS_ACTIVE:
125 priv->media_connected = true;
126 if (!netif_carrier_ok(priv->netdev))
127 netif_carrier_on(priv->netdev);
128 mwifiex_wake_up_net_dev_queue(priv->netdev, adapter);
129 break;
130 case EVENT_UAP_BSS_START:
131 dev_dbg(adapter->dev, "AP EVENT: event id: %#x\n", eventcause);
132 memcpy(priv->netdev->dev_addr, adapter->event_body + 2,
133 ETH_ALEN);
134 if (priv->hist_data)
135 mwifiex_hist_data_reset(priv);
136 break;
137 case EVENT_UAP_MIC_COUNTERMEASURES:
138 /* For future development */
139 dev_dbg(adapter->dev, "AP EVENT: event id: %#x\n", eventcause);
140 break;
141 case EVENT_AMSDU_AGGR_CTRL:
142 ctrl = le16_to_cpu(*(__le16 *)adapter->event_body);
143 dev_dbg(adapter->dev, "event: AMSDU_AGGR_CTRL %d\n", ctrl);
144
145 if (priv->media_connected) {
146 adapter->tx_buf_size =
147 min_t(u16, adapter->curr_tx_buf_size, ctrl);
148 dev_dbg(adapter->dev, "event: tx_buf_size %d\n",
149 adapter->tx_buf_size);
150 }
151 break;
152 case EVENT_ADDBA:
153 dev_dbg(adapter->dev, "event: ADDBA Request\n");
154 if (priv->media_connected)
155 mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_RSP,
156 HostCmd_ACT_GEN_SET, 0,
157 adapter->event_body, false);
158 break;
159 case EVENT_DELBA:
160 dev_dbg(adapter->dev, "event: DELBA Request\n");
161 if (priv->media_connected)
162 mwifiex_11n_delete_ba_stream(priv, adapter->event_body);
163 break;
164 case EVENT_BA_STREAM_TIEMOUT:
165 dev_dbg(adapter->dev, "event: BA Stream timeout\n");
166 if (priv->media_connected) {
167 ba_timeout = (void *)adapter->event_body;
168 mwifiex_11n_ba_stream_timeout(priv, ba_timeout);
169 }
170 break;
171 case EVENT_EXT_SCAN_REPORT:
172 dev_dbg(adapter->dev, "event: EXT_SCAN Report\n");
173 if (adapter->ext_scan)
174 return mwifiex_handle_event_ext_scan_report(priv,
175 adapter->event_skb->data);
176 break;
177 case EVENT_TX_STATUS_REPORT:
178 dev_dbg(adapter->dev, "event: TX_STATUS Report\n");
179 mwifiex_parse_tx_status_event(priv, adapter->event_body);
180 break;
181 case EVENT_PS_SLEEP:
182 dev_dbg(adapter->dev, "info: EVENT: SLEEP\n");
183
184 adapter->ps_state = PS_STATE_PRE_SLEEP;
185
186 mwifiex_check_ps_cond(adapter);
187 break;
188
189 case EVENT_PS_AWAKE:
190 dev_dbg(adapter->dev, "info: EVENT: AWAKE\n");
191 if (!adapter->pps_uapsd_mode &&
192 priv->media_connected && adapter->sleep_period.period) {
193 adapter->pps_uapsd_mode = true;
194 dev_dbg(adapter->dev,
195 "event: PPS/UAPSD mode activated\n");
196 }
197 adapter->tx_lock_flag = false;
198 if (adapter->pps_uapsd_mode && adapter->gen_null_pkt) {
199 if (mwifiex_check_last_packet_indication(priv)) {
200 if (adapter->data_sent) {
201 adapter->ps_state = PS_STATE_AWAKE;
202 adapter->pm_wakeup_card_req = false;
203 adapter->pm_wakeup_fw_try = false;
204 break;
205 }
206 if (!mwifiex_send_null_packet
207 (priv,
208 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET |
209 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET))
210 adapter->ps_state =
211 PS_STATE_SLEEP;
212 return 0;
213 }
214 }
215 adapter->ps_state = PS_STATE_AWAKE;
216 adapter->pm_wakeup_card_req = false;
217 adapter->pm_wakeup_fw_try = false;
218 break;
219
220 case EVENT_CHANNEL_REPORT_RDY:
221 dev_dbg(adapter->dev, "event: Channel Report\n");
222 mwifiex_11h_handle_chanrpt_ready(priv, adapter->event_skb);
223 break;
224 case EVENT_RADAR_DETECTED:
225 dev_dbg(adapter->dev, "event: Radar detected\n");
226 mwifiex_11h_handle_radar_detected(priv, adapter->event_skb);
227 break;
228 default:
229 dev_dbg(adapter->dev, "event: unknown event id: %#x\n",
230 eventcause);
231 break;
232 }
233
234 return 0;
235 }
236
237 /* This function deletes station entry from associated station list.
238 * Also if both AP and STA are 11n enabled, RxReorder tables and TxBA stream
239 * tables created for this station are deleted.
240 */
mwifiex_uap_del_sta_data(struct mwifiex_private * priv,struct mwifiex_sta_node * node)241 void mwifiex_uap_del_sta_data(struct mwifiex_private *priv,
242 struct mwifiex_sta_node *node)
243 {
244 if (priv->ap_11n_enabled && node->is_11n_enabled) {
245 mwifiex_11n_del_rx_reorder_tbl_by_ta(priv, node->mac_addr);
246 mwifiex_del_tx_ba_stream_tbl_by_ra(priv, node->mac_addr);
247 }
248 mwifiex_del_sta_entry(priv, node->mac_addr);
249
250 return;
251 }
252