This source file includes following definitions.
- mwifiex_init_11h_params
- mwifiex_is_11h_active
- mwifiex_11h_process_infra_join
- mwifiex_11h_activate
- mwifiex_11h_process_join
- mwifiex_dfs_cac_work_queue
- mwifiex_cmd_issue_chan_report_request
- mwifiex_stop_radar_detection
- mwifiex_abort_cac
- mwifiex_11h_handle_chanrpt_ready
- mwifiex_11h_handle_radar_detected
- mwifiex_dfs_chan_sw_work_queue
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20 #include "main.h"
21 #include "fw.h"
22
23
24 void mwifiex_init_11h_params(struct mwifiex_private *priv)
25 {
26 priv->state_11h.is_11h_enabled = true;
27 priv->state_11h.is_11h_active = false;
28 }
29
30 inline int mwifiex_is_11h_active(struct mwifiex_private *priv)
31 {
32 return priv->state_11h.is_11h_active;
33 }
34
35
36
37 static void
38 mwifiex_11h_process_infra_join(struct mwifiex_private *priv, u8 **buffer,
39 struct mwifiex_bssdescriptor *bss_desc)
40 {
41 struct mwifiex_ie_types_header *ie_header;
42 struct mwifiex_ie_types_pwr_capability *cap;
43 struct mwifiex_ie_types_local_pwr_constraint *constraint;
44 struct ieee80211_supported_band *sband;
45 u8 radio_type;
46 int i;
47
48 if (!buffer || !(*buffer))
49 return;
50
51 radio_type = mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
52 sband = priv->wdev.wiphy->bands[radio_type];
53
54 cap = (struct mwifiex_ie_types_pwr_capability *)*buffer;
55 cap->header.type = cpu_to_le16(WLAN_EID_PWR_CAPABILITY);
56 cap->header.len = cpu_to_le16(2);
57 cap->min_pwr = 0;
58 cap->max_pwr = 0;
59 *buffer += sizeof(*cap);
60
61 constraint = (struct mwifiex_ie_types_local_pwr_constraint *)*buffer;
62 constraint->header.type = cpu_to_le16(WLAN_EID_PWR_CONSTRAINT);
63 constraint->header.len = cpu_to_le16(2);
64 constraint->chan = bss_desc->channel;
65 constraint->constraint = bss_desc->local_constraint;
66 *buffer += sizeof(*constraint);
67
68 ie_header = (struct mwifiex_ie_types_header *)*buffer;
69 ie_header->type = cpu_to_le16(TLV_TYPE_PASSTHROUGH);
70 ie_header->len = cpu_to_le16(2 * sband->n_channels + 2);
71 *buffer += sizeof(*ie_header);
72 *(*buffer)++ = WLAN_EID_SUPPORTED_CHANNELS;
73 *(*buffer)++ = 2 * sband->n_channels;
74 for (i = 0; i < sband->n_channels; i++) {
75 *(*buffer)++ = ieee80211_frequency_to_channel(
76 sband->channels[i].center_freq);
77 *(*buffer)++ = 1;
78 }
79 }
80
81
82 int mwifiex_11h_activate(struct mwifiex_private *priv, bool flag)
83 {
84 u32 enable = flag;
85
86
87 if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) && enable)
88 enable |= MWIFIEX_MASTER_RADAR_DET_MASK;
89
90 return mwifiex_send_cmd(priv, HostCmd_CMD_802_11_SNMP_MIB,
91 HostCmd_ACT_GEN_SET, DOT11H_I, &enable, true);
92 }
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97
98
99
100 void mwifiex_11h_process_join(struct mwifiex_private *priv, u8 **buffer,
101 struct mwifiex_bssdescriptor *bss_desc)
102 {
103 if (bss_desc->sensed_11h) {
104
105
106
107 mwifiex_11h_activate(priv, true);
108 priv->state_11h.is_11h_active = true;
109 bss_desc->cap_info_bitmap |= WLAN_CAPABILITY_SPECTRUM_MGMT;
110 mwifiex_11h_process_infra_join(priv, buffer, bss_desc);
111 } else {
112
113 mwifiex_11h_activate(priv, false);
114 priv->state_11h.is_11h_active = false;
115 bss_desc->cap_info_bitmap &= ~WLAN_CAPABILITY_SPECTRUM_MGMT;
116 }
117 }
118
119
120
121
122
123 void mwifiex_dfs_cac_work_queue(struct work_struct *work)
124 {
125 struct cfg80211_chan_def chandef;
126 struct delayed_work *delayed_work = to_delayed_work(work);
127 struct mwifiex_private *priv =
128 container_of(delayed_work, struct mwifiex_private,
129 dfs_cac_work);
130
131 chandef = priv->dfs_chandef;
132 if (priv->wdev.cac_started) {
133 mwifiex_dbg(priv->adapter, MSG,
134 "CAC timer finished; No radar detected\n");
135 cfg80211_cac_event(priv->netdev, &chandef,
136 NL80211_RADAR_CAC_FINISHED,
137 GFP_KERNEL);
138 }
139 }
140
141
142
143
144 int mwifiex_cmd_issue_chan_report_request(struct mwifiex_private *priv,
145 struct host_cmd_ds_command *cmd,
146 void *data_buf)
147 {
148 struct host_cmd_ds_chan_rpt_req *cr_req = &cmd->params.chan_rpt_req;
149 struct mwifiex_radar_params *radar_params = (void *)data_buf;
150
151 cmd->command = cpu_to_le16(HostCmd_CMD_CHAN_REPORT_REQUEST);
152 cmd->size = cpu_to_le16(S_DS_GEN);
153 le16_unaligned_add_cpu(&cmd->size,
154 sizeof(struct host_cmd_ds_chan_rpt_req));
155
156 cr_req->chan_desc.start_freq = cpu_to_le16(MWIFIEX_A_BAND_START_FREQ);
157 cr_req->chan_desc.chan_num = radar_params->chandef->chan->hw_value;
158 cr_req->chan_desc.chan_width = radar_params->chandef->width;
159 cr_req->msec_dwell_time = cpu_to_le32(radar_params->cac_time_ms);
160
161 if (radar_params->cac_time_ms)
162 mwifiex_dbg(priv->adapter, MSG,
163 "11h: issuing DFS Radar check for channel=%d\n",
164 radar_params->chandef->chan->hw_value);
165 else
166 mwifiex_dbg(priv->adapter, MSG, "cancelling CAC\n");
167
168 return 0;
169 }
170
171 int mwifiex_stop_radar_detection(struct mwifiex_private *priv,
172 struct cfg80211_chan_def *chandef)
173 {
174 struct mwifiex_radar_params radar_params;
175
176 memset(&radar_params, 0, sizeof(struct mwifiex_radar_params));
177 radar_params.chandef = chandef;
178 radar_params.cac_time_ms = 0;
179
180 return mwifiex_send_cmd(priv, HostCmd_CMD_CHAN_REPORT_REQUEST,
181 HostCmd_ACT_GEN_SET, 0, &radar_params, true);
182 }
183
184
185
186
187 void mwifiex_abort_cac(struct mwifiex_private *priv)
188 {
189 if (priv->wdev.cac_started) {
190 if (mwifiex_stop_radar_detection(priv, &priv->dfs_chandef))
191 mwifiex_dbg(priv->adapter, ERROR,
192 "failed to stop CAC in FW\n");
193 mwifiex_dbg(priv->adapter, MSG,
194 "Aborting delayed work for CAC.\n");
195 cancel_delayed_work_sync(&priv->dfs_cac_work);
196 cfg80211_cac_event(priv->netdev, &priv->dfs_chandef,
197 NL80211_RADAR_CAC_ABORTED, GFP_KERNEL);
198 }
199 }
200
201
202
203
204
205 int mwifiex_11h_handle_chanrpt_ready(struct mwifiex_private *priv,
206 struct sk_buff *skb)
207 {
208 struct host_cmd_ds_chan_rpt_event *rpt_event;
209 struct mwifiex_ie_types_chan_rpt_data *rpt;
210 u8 *evt_buf;
211 u16 event_len, tlv_len;
212
213 rpt_event = (void *)(skb->data + sizeof(u32));
214 event_len = skb->len - (sizeof(struct host_cmd_ds_chan_rpt_event)+
215 sizeof(u32));
216
217 if (le32_to_cpu(rpt_event->result) != HostCmd_RESULT_OK) {
218 mwifiex_dbg(priv->adapter, ERROR,
219 "Error in channel report event\n");
220 return -1;
221 }
222
223 evt_buf = (void *)&rpt_event->tlvbuf;
224
225 while (event_len >= sizeof(struct mwifiex_ie_types_header)) {
226 rpt = (void *)&rpt_event->tlvbuf;
227 tlv_len = le16_to_cpu(rpt->header.len);
228
229 switch (le16_to_cpu(rpt->header.type)) {
230 case TLV_TYPE_CHANRPT_11H_BASIC:
231 if (rpt->map.radar) {
232 mwifiex_dbg(priv->adapter, MSG,
233 "RADAR Detected on channel %d!\n",
234 priv->dfs_chandef.chan->hw_value);
235 cancel_delayed_work_sync(&priv->dfs_cac_work);
236 cfg80211_cac_event(priv->netdev,
237 &priv->dfs_chandef,
238 NL80211_RADAR_DETECTED,
239 GFP_KERNEL);
240 }
241 break;
242 default:
243 break;
244 }
245
246 evt_buf += (tlv_len + sizeof(rpt->header));
247 event_len -= (tlv_len + sizeof(rpt->header));
248 }
249
250 return 0;
251 }
252
253
254 int mwifiex_11h_handle_radar_detected(struct mwifiex_private *priv,
255 struct sk_buff *skb)
256 {
257 struct mwifiex_radar_det_event *rdr_event;
258
259 rdr_event = (void *)(skb->data + sizeof(u32));
260
261 mwifiex_dbg(priv->adapter, MSG,
262 "radar detected; indicating kernel\n");
263 if (mwifiex_stop_radar_detection(priv, &priv->dfs_chandef))
264 mwifiex_dbg(priv->adapter, ERROR,
265 "Failed to stop CAC in FW\n");
266 cfg80211_radar_event(priv->adapter->wiphy, &priv->dfs_chandef,
267 GFP_KERNEL);
268 mwifiex_dbg(priv->adapter, MSG, "regdomain: %d\n",
269 rdr_event->reg_domain);
270 mwifiex_dbg(priv->adapter, MSG, "radar detection type: %d\n",
271 rdr_event->det_type);
272
273 return 0;
274 }
275
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277
278
279
280
281 void mwifiex_dfs_chan_sw_work_queue(struct work_struct *work)
282 {
283 struct mwifiex_uap_bss_param *bss_cfg;
284 struct delayed_work *delayed_work = to_delayed_work(work);
285 struct mwifiex_private *priv =
286 container_of(delayed_work, struct mwifiex_private,
287 dfs_chan_sw_work);
288
289 bss_cfg = &priv->bss_cfg;
290 if (!bss_cfg->beacon_period) {
291 mwifiex_dbg(priv->adapter, ERROR,
292 "channel switch: AP already stopped\n");
293 return;
294 }
295
296 mwifiex_uap_set_channel(priv, bss_cfg, priv->dfs_chandef);
297
298 if (mwifiex_config_start_uap(priv, bss_cfg)) {
299 mwifiex_dbg(priv->adapter, ERROR,
300 "Failed to start AP after channel switch\n");
301 return;
302 }
303
304 mwifiex_dbg(priv->adapter, MSG,
305 "indicating channel switch completion to kernel\n");
306 cfg80211_ch_switch_notify(priv->netdev, &priv->dfs_chandef);
307 }