summaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/wl12xx/scan.h
blob: a7ed43dc08c9e89217bc4430ca8b5b2b3ce2607a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
/*
 * This file is part of wl1271
 *
 * Copyright (C) 2009-2010 Nokia Corporation
 *
 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 */

#ifndef __SCAN_H__
#define __SCAN_H__

#include "wl12xx.h"

int wl1271_scan(struct wl1271 *wl, struct ieee80211_vif *vif,
		const u8 *ssid, size_t ssid_len,
		struct cfg80211_scan_request *req);
int wl1271_scan_stop(struct wl1271 *wl);
int wl1271_scan_build_probe_req(struct wl1271 *wl,
				const u8 *ssid, size_t ssid_len,
				const u8 *ie, size_t ie_len, u8 band);
void wl1271_scan_stm(struct wl1271 *wl, struct ieee80211_vif *vif);
void wl1271_scan_complete_work(struct work_struct *work);
int wl1271_scan_sched_scan_config(struct wl1271 *wl,
				     struct wl12xx_vif *wlvif,
				     struct cfg80211_sched_scan_request *req,
				     struct ieee80211_sched_scan_ies *ies);
int wl1271_scan_sched_scan_start(struct wl1271 *wl, struct wl12xx_vif *wlvif);
void wl1271_scan_sched_scan_stop(struct wl1271 *wl);
void wl1271_scan_sched_scan_results(struct wl1271 *wl);

#define WL1271_SCAN_MAX_CHANNELS       24
#define WL1271_SCAN_DEFAULT_TAG        1
#define WL1271_SCAN_CURRENT_TX_PWR     0
#define WL1271_SCAN_OPT_ACTIVE         0
#define WL1271_SCAN_OPT_PASSIVE	       1
#define WL1271_SCAN_OPT_TRIGGERED_SCAN 2
#define WL1271_SCAN_OPT_PRIORITY_HIGH  4
/* scan even if we fail to enter psm */
#define WL1271_SCAN_OPT_FORCE          8
#define WL1271_SCAN_BAND_2_4_GHZ 0
#define WL1271_SCAN_BAND_5_GHZ 1

#define WL1271_SCAN_TIMEOUT    10000 /* msec */

enum {
	WL1271_SCAN_STATE_IDLE,
	WL1271_SCAN_STATE_2GHZ_ACTIVE,
	WL1271_SCAN_STATE_2GHZ_PASSIVE,
	WL1271_SCAN_STATE_5GHZ_ACTIVE,
	WL1271_SCAN_STATE_5GHZ_PASSIVE,
	WL1271_SCAN_STATE_DONE
};

struct basic_scan_params {
	/* Scan option flags (WL1271_SCAN_OPT_*) */
	__le16 scan_options;
	u8 role_id;
	/* Number of scan channels in the list (maximum 30) */
	u8 n_ch;
	/* This field indicates the number of probe requests to send
	   per channel for an active scan */
	u8 n_probe_reqs;
	u8 tid_trigger;
	u8 ssid_len;
	u8 use_ssid_list;

	/* Rate bit field for sending the probes */
	__le32 tx_rate;

	u8 ssid[IEEE80211_MAX_SSID_LEN];
	/* Band to scan */
	u8 band;

	u8 scan_tag;
	u8 padding2[2];
} __packed;

struct basic_scan_channel_params {
	/* Duration in TU to wait for frames on a channel for active scan */
	__le32 min_duration;
	__le32 max_duration;
	__le32 bssid_lsb;
	__le16 bssid_msb;
	u8 early_termination;
	u8 tx_power_att;
	u8 channel;
	/* FW internal use only! */
	u8 dfs_candidate;
	u8 activity_detected;
	u8 pad;
} __packed;

struct wl1271_cmd_scan {
	struct wl1271_cmd_header header;

	struct basic_scan_params params;
	struct basic_scan_channel_params channels[WL1271_SCAN_MAX_CHANNELS];

	/* src mac address */
	u8 addr[ETH_ALEN];
	u8 padding[2];
} __packed;

struct wl1271_cmd_trigger_scan_to {
	struct wl1271_cmd_header header;

	__le32 timeout;
} __packed;

#define MAX_CHANNELS_2GHZ	14
#define MAX_CHANNELS_5GHZ	23
#define MAX_CHANNELS_4GHZ	4

#define SCAN_MAX_CYCLE_INTERVALS 16
#define SCAN_MAX_BANDS 3

enum {
	SCAN_SSID_FILTER_ANY      = 0,
	SCAN_SSID_FILTER_SPECIFIC = 1,
	SCAN_SSID_FILTER_LIST     = 2,
	SCAN_SSID_FILTER_DISABLED = 3
};

enum {
	SCAN_BSS_TYPE_INDEPENDENT,
	SCAN_BSS_TYPE_INFRASTRUCTURE,
	SCAN_BSS_TYPE_ANY,
};

#define SCAN_CHANNEL_FLAGS_DFS		BIT(0)
#define SCAN_CHANNEL_FLAGS_DFS_ENABLED	BIT(1)

struct conn_scan_ch_params {
	__le16 min_duration;
	__le16 max_duration;
	__le16 passive_duration;

	u8  channel;
	u8  tx_power_att;

	/* bit 0: DFS channel; bit 1: DFS enabled */
	u8  flags;

	u8  padding[3];
} __packed;

struct wl1271_cmd_sched_scan_config {
	struct wl1271_cmd_header header;

	__le32 intervals[SCAN_MAX_CYCLE_INTERVALS];

	s8 rssi_threshold; /* for filtering (in dBm) */
	s8 snr_threshold;  /* for filtering (in dB) */

	u8 cycles;       /* maximum number of scan cycles */
	u8 report_after; /* report when this number of results are received */
	u8 terminate;    /* stop scanning after reporting */

	u8 tag;
	u8 bss_type; /* for filtering */
	u8 filter_type;

	u8 ssid_len;     /* For SCAN_SSID_FILTER_SPECIFIC */
	u8 ssid[IEEE80211_MAX_SSID_LEN];

	u8 n_probe_reqs; /* Number of probes requests per channel */

	u8 passive[SCAN_MAX_BANDS];
	u8 active[SCAN_MAX_BANDS];

	u8 dfs;

	u8 padding[3];

	struct conn_scan_ch_params channels_2[MAX_CHANNELS_2GHZ];
	struct conn_scan_ch_params channels_5[MAX_CHANNELS_5GHZ];
	struct conn_scan_ch_params channels_4[MAX_CHANNELS_4GHZ];
} __packed;


#define SCHED_SCAN_MAX_SSIDS 16

enum {
	SCAN_SSID_TYPE_PUBLIC = 0,
	SCAN_SSID_TYPE_HIDDEN = 1,
};

struct wl1271_ssid {
	u8 type;
	u8 len;
	u8 ssid[IEEE80211_MAX_SSID_LEN];
	/* u8 padding[2]; */
} __packed;

struct wl1271_cmd_sched_scan_ssid_list {
	struct wl1271_cmd_header header;

	u8 n_ssids;
	struct wl1271_ssid ssids[SCHED_SCAN_MAX_SSIDS];
	u8 padding[3];
} __packed;

struct wl1271_cmd_sched_scan_start {
	struct wl1271_cmd_header header;

	u8 tag;
	u8 padding[3];
} __packed;

struct wl1271_cmd_sched_scan_stop {
	struct wl1271_cmd_header header;

	u8 tag;
	u8 padding[3];
} __packed;


#endif /* __WL1271_SCAN_H__ */
OpenPOWER on IntegriCloud