summaryrefslogtreecommitdiff
path: root/drivers/net/wireless/libertas/scan.h
blob: bd019e5ff1eb24f294fb7c12d0874017ecef7136 (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
/**
  * Interface for the wlan network scan routines
  *
  * Driver interface functions and type declarations for the scan module
  *   implemented in wlan_scan.c.
  */
#ifndef _WLAN_SCAN_H
#define _WLAN_SCAN_H

#include <net/ieee80211.h>
#include "hostcmd.h"

/**
 *  @brief Maximum number of channels that can be sent in a setuserscan ioctl
 *
 *  @sa wlan_ioctl_user_scan_cfg
 */
#define WLAN_IOCTL_USER_SCAN_CHAN_MAX  50

//! Infrastructure BSS scan type in wlan_scan_cmd_config
#define WLAN_SCAN_BSS_TYPE_BSS         1

//! Adhoc BSS scan type in wlan_scan_cmd_config
#define WLAN_SCAN_BSS_TYPE_IBSS        2

//! Adhoc or Infrastructure BSS scan type in wlan_scan_cmd_config, no filter
#define WLAN_SCAN_BSS_TYPE_ANY         3

/**
 * @brief Structure used internally in the wlan driver to configure a scan.
 *
 * Sent to the command processing module to configure the firmware
 *   scan command prepared by libertas_cmd_80211_scan.
 *
 * @sa wlan_scan_networks
 *
 */
struct wlan_scan_cmd_config {
    /**
     *  @brief BSS type to be sent in the firmware command
     *
     *  Field can be used to restrict the types of networks returned in the
     *    scan.  valid settings are:
     *
     *   - WLAN_SCAN_BSS_TYPE_BSS  (infrastructure)
     *   - WLAN_SCAN_BSS_TYPE_IBSS (adhoc)
     *   - WLAN_SCAN_BSS_TYPE_ANY  (unrestricted, adhoc and infrastructure)
     */
	u8 bsstype;

    /**
     *  @brief Specific BSSID used to filter scan results in the firmware
     */
	u8 bssid[ETH_ALEN];

    /**
     *  @brief length of TLVs sent in command starting at tlvBuffer
     */
	int tlvbufferlen;

    /**
     *  @brief SSID TLV(s) and ChanList TLVs to be sent in the firmware command
     *
     *  @sa TLV_TYPE_CHANLIST, mrvlietypes_chanlistparamset_t
     *  @sa TLV_TYPE_SSID, mrvlietypes_ssidparamset_t
     */
	u8 tlvbuffer[1];	//!< SSID TLV(s) and ChanList TLVs are stored here
};

/**
 *  @brief IOCTL channel sub-structure sent in wlan_ioctl_user_scan_cfg
 *
 *  Multiple instances of this structure are included in the IOCTL command
 *   to configure a instance of a scan on the specific channel.
 */
struct wlan_ioctl_user_scan_chan {
	u8 channumber;		//!< channel Number to scan
	u8 radiotype;		//!< Radio type: 'B/G' band = 0, 'A' band = 1
	u8 scantype;		//!< Scan type: Active = 0, Passive = 1
	u16 scantime;		//!< Scan duration in milliseconds; if 0 default used
};

/**
 *  @brief IOCTL input structure to configure an immediate scan cmd to firmware
 *
 *  Used in the setuserscan (WLAN_SET_USER_SCAN) private ioctl.  Specifies
 *   a number of parameters to be used in general for the scan as well
 *   as a channel list (wlan_ioctl_user_scan_chan) for each scan period
 *   desired.
 *
 *  @sa libertas_set_user_scan_ioctl
 */
struct wlan_ioctl_user_scan_cfg {
    /**
     *  @brief BSS type to be sent in the firmware command
     *
     *  Field can be used to restrict the types of networks returned in the
     *    scan.  valid settings are:
     *
     *   - WLAN_SCAN_BSS_TYPE_BSS  (infrastructure)
     *   - WLAN_SCAN_BSS_TYPE_IBSS (adhoc)
     *   - WLAN_SCAN_BSS_TYPE_ANY  (unrestricted, adhoc and infrastructure)
     */
	u8 bsstype;

    /**
     *  @brief Configure the number of probe requests for active chan scans
     */
	u8 numprobes;

	/**
	 *  @brief BSSID filter sent in the firmware command to limit the results
	 */
	u8 bssid[ETH_ALEN];

	/* Clear existing scan results matching this BSSID */
	u8 clear_bssid;

	/**
	 *  @brief SSID filter sent in the firmware command to limit the results
	 */
	char ssid[IW_ESSID_MAX_SIZE];
	u8 ssid_len;

	/* Clear existing scan results matching this SSID */
	u8 clear_ssid;

    /**
     *  @brief Variable number (fixed maximum) of channels to scan up
     */
	struct wlan_ioctl_user_scan_chan chanlist[WLAN_IOCTL_USER_SCAN_CHAN_MAX];
};

/**
 *  @brief Structure used to store information for each beacon/probe response
 */
struct bss_descriptor {
	u8 bssid[ETH_ALEN];

	u8 ssid[IW_ESSID_MAX_SIZE + 1];
	u8 ssid_len;

	/* WEP encryption requirement */
	u32 privacy;

	/* receive signal strength in dBm */
	long rssi;

	u32 channel;

	u16 beaconperiod;

	u32 atimwindow;

	u8 mode;
	u8 libertas_supported_rates[WLAN_SUPPORTED_RATES];

	__le64 timestamp;	//!< TSF value included in the beacon/probe response
	unsigned long last_scanned;

	union ieeetypes_phyparamset phyparamset;
	union IEEEtypes_ssparamset ssparamset;
	struct ieeetypes_capinfo cap;
	u8 datarates[WLAN_SUPPORTED_RATES];

	u64 networktsf;		//!< TSF timestamp from the current firmware TSF

	struct ieeetypes_countryinfofullset countryinfo;

	u8 wpa_ie[MAX_WPA_IE_LEN];
	size_t wpa_ie_len;
	u8 rsn_ie[MAX_WPA_IE_LEN];
	size_t rsn_ie_len;

	struct list_head list;
};

extern int libertas_ssid_cmp(u8 *ssid1, u8 ssid1_len, u8 *ssid2, u8 ssid2_len);

struct bss_descriptor * libertas_find_ssid_in_list(wlan_adapter * adapter,
			u8 *ssid, u8 ssid_len, u8 * bssid, u8 mode,
			int channel);

struct bss_descriptor * libertas_find_best_ssid_in_list(wlan_adapter * adapter,
			u8 mode);

extern struct bss_descriptor * libertas_find_bssid_in_list(wlan_adapter * adapter,
			u8 * bssid, u8 mode);

int libertas_find_best_network_ssid(wlan_private * priv, u8 *out_ssid,
			u8 *out_ssid_len, u8 preferred_mode, u8 *out_mode);

extern int libertas_send_specific_ssid_scan(wlan_private * priv, u8 *ssid,
				u8 ssid_len, u8 clear_ssid);
extern int libertas_send_specific_bssid_scan(wlan_private * priv,
				 u8 * bssid, u8 clear_bssid);

extern int libertas_cmd_80211_scan(wlan_private * priv,
				struct cmd_ds_command *cmd,
				void *pdata_buf);

extern int libertas_ret_80211_scan(wlan_private * priv,
				struct cmd_ds_command *resp);

int wlan_scan_networks(wlan_private * priv,
                const struct wlan_ioctl_user_scan_cfg * puserscanin,
                int full_scan);

struct ifreq;

struct iw_point;
struct iw_param;
struct iw_request_info;
extern int libertas_get_scan(struct net_device *dev, struct iw_request_info *info,
			 struct iw_point *dwrq, char *extra);
extern int libertas_set_scan(struct net_device *dev, struct iw_request_info *info,
			 struct iw_param *vwrq, char *extra);

#endif				/* _WLAN_SCAN_H */