drivers/net/wireless/wl12xx/scan.h

   1 /*
   2  * This file is part of wl1271
   3  *
   4  * Copyright (C) 2009-2010 Nokia Corporation
   5  *
   6  * Contact: Luciano Coelho <luciano.coelho@nokia.com>
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * version 2 as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  20  * 02110-1301 USA
  21  *
  22  */
  23
  24 #ifndef __SCAN_H__
  25 #define __SCAN_H__
  26
  27 #include "wl12xx.h"
  28
  29 int wl1271_scan(struct wl1271 *wl, const u8 *ssid, size_t ssid_len,
  30                 struct cfg80211_scan_request *req);
  31 int wl1271_scan_stop(struct wl1271 *wl);
  32 int wl1271_scan_build_probe_req(struct wl1271 *wl,
  33                                 const u8 *ssid, size_t ssid_len,
  34                                 const u8 *ie, size_t ie_len, u8 band);
  35 void wl1271_scan_stm(struct wl1271 *wl);
  36 void wl1271_scan_complete_work(struct work_struct *work);
  37 int wl1271_scan_sched_scan_config(struct wl1271 *wl,
  38                                      struct cfg80211_sched_scan_request *req,
  39                                      struct ieee80211_sched_scan_ies *ies);
  40 int wl1271_scan_sched_scan_start(struct wl1271 *wl);
  41 void wl1271_scan_sched_scan_stop(struct wl1271 *wl);
  42 void wl1271_scan_sched_scan_results(struct wl1271 *wl);
  43
  44 #define WL1271_SCAN_MAX_CHANNELS       24
  45 #define WL1271_SCAN_DEFAULT_TAG        1
  46 #define WL1271_SCAN_CURRENT_TX_PWR     0
  47 #define WL1271_SCAN_OPT_ACTIVE         0
  48 #define WL1271_SCAN_OPT_PASSIVE        1
  49 #define WL1271_SCAN_OPT_PRIORITY_HIGH  4
  50 #define WL1271_SCAN_BAND_2_4_GHZ 0
  51 #define WL1271_SCAN_BAND_5_GHZ 1
  52
  53 #define WL1271_SCAN_TIMEOUT    10000 /* msec */
  54
  55 enum {
  56         WL1271_SCAN_STATE_IDLE,
  57         WL1271_SCAN_STATE_2GHZ_ACTIVE,
  58         WL1271_SCAN_STATE_2GHZ_PASSIVE,
  59         WL1271_SCAN_STATE_5GHZ_ACTIVE,
  60         WL1271_SCAN_STATE_5GHZ_PASSIVE,
  61         WL1271_SCAN_STATE_DONE
  62 };
  63
  64 struct basic_scan_params {
  65         __le32 rx_config_options;
  66         __le32 rx_filter_options;
  67         /* Scan option flags (WL1271_SCAN_OPT_*) */
  68         __le16 scan_options;
  69         /* Number of scan channels in the list (maximum 30) */
  70         u8 n_ch;
  71         /* This field indicates the number of probe requests to send
  72            per channel for an active scan */
  73         u8 n_probe_reqs;
  74         /* Rate bit field for sending the probes */
  75         __le32 tx_rate;
  76         u8 tid_trigger;
  77         u8 ssid_len;
  78         /* in order to align */
  79         u8 padding1[2];
  80         u8 ssid[IW_ESSID_MAX_SIZE];
  81         /* Band to scan */
  82         u8 band;
  83         u8 use_ssid_list;
  84         u8 scan_tag;
  85         u8 padding2;
  86 } __packed;
  87
  88 struct basic_scan_channel_params {
  89         /* Duration in TU to wait for frames on a channel for active scan */
  90         __le32 min_duration;
  91         __le32 max_duration;
  92         __le32 bssid_lsb;
  93         __le16 bssid_msb;
  94         u8 early_termination;
  95         u8 tx_power_att;
  96         u8 channel;
  97         /* FW internal use only! */
  98         u8 dfs_candidate;
  99         u8 activity_detected;
 100         u8 pad;
 101 } __packed;
 102
 103 struct wl1271_cmd_scan {
 104         struct wl1271_cmd_header header;
 105
 106         struct basic_scan_params params;
 107         struct basic_scan_channel_params channels[WL1271_SCAN_MAX_CHANNELS];
 108 } __packed;
 109
 110 struct wl1271_cmd_trigger_scan_to {
 111         struct wl1271_cmd_header header;
 112
 113         __le32 timeout;
 114 } __packed;
 115
 116 #define MAX_CHANNELS_2GHZ       14
 117 #define MAX_CHANNELS_5GHZ       23
 118 #define MAX_CHANNELS_4GHZ       4
 119
 120 #define SCAN_MAX_CYCLE_INTERVALS 16
 121 #define SCAN_MAX_BANDS 3
 122
 123 enum {
 124         SCAN_SSID_FILTER_ANY      = 0,
 125         SCAN_SSID_FILTER_SPECIFIC = 1,
 126         SCAN_SSID_FILTER_LIST     = 2,
 127         SCAN_SSID_FILTER_DISABLED = 3
 128 };
 129
 130 enum {
 131         SCAN_BSS_TYPE_INDEPENDENT,
 132         SCAN_BSS_TYPE_INFRASTRUCTURE,
 133         SCAN_BSS_TYPE_ANY,
 134 };
 135
 136 #define SCAN_CHANNEL_FLAGS_DFS          BIT(0)
 137 #define SCAN_CHANNEL_FLAGS_DFS_ENABLED  BIT(1)
 138
 139 struct conn_scan_ch_params {
 140         __le16 min_duration;
 141         __le16 max_duration;
 142         __le16 passive_duration;
 143
 144         u8  channel;
 145         u8  tx_power_att;
 146
 147         /* bit 0: DFS channel; bit 1: DFS enabled */
 148         u8  flags;
 149
 150         u8  padding[3];
 151 } __packed;
 152
 153 struct wl1271_cmd_sched_scan_config {
 154         struct wl1271_cmd_header header;
 155
 156         __le32 intervals[SCAN_MAX_CYCLE_INTERVALS];
 157
 158         s8 rssi_threshold; /* for filtering (in dBm) */
 159         s8 snr_threshold;  /* for filtering (in dB) */
 160
 161         u8 cycles;       /* maximum number of scan cycles */
 162         u8 report_after; /* report when this number of results are received */
 163         u8 terminate;    /* stop scanning after reporting */
 164
 165         u8 tag;
 166         u8 bss_type; /* for filtering */
 167         u8 filter_type;
 168
 169         u8 ssid_len;     /* For SCAN_SSID_FILTER_SPECIFIC */
 170         u8 ssid[IW_ESSID_MAX_SIZE];
 171
 172         u8 n_probe_reqs; /* Number of probes requests per channel */
 173
 174         u8 passive[SCAN_MAX_BANDS];
 175         u8 active[SCAN_MAX_BANDS];
 176
 177         u8 dfs;
 178
 179         u8 padding[3];
 180
 181         struct conn_scan_ch_params channels_2[MAX_CHANNELS_2GHZ];
 182         struct conn_scan_ch_params channels_5[MAX_CHANNELS_5GHZ];
 183         struct conn_scan_ch_params channels_4[MAX_CHANNELS_4GHZ];
 184 } __packed;
 185
 186
 187 #define SCHED_SCAN_MAX_SSIDS 8
 188
 189 enum {
 190         SCAN_SSID_TYPE_PUBLIC = 0,
 191         SCAN_SSID_TYPE_HIDDEN = 1,
 192 };
 193
 194 struct wl1271_ssid {
 195         u8 type;
 196         u8 len;
 197         u8 ssid[IW_ESSID_MAX_SIZE];
 198         /* u8 padding[2]; */
 199 } __packed;
 200
 201 struct wl1271_cmd_sched_scan_ssid_list {
 202         struct wl1271_cmd_header header;
 203
 204         u8 n_ssids;
 205         struct wl1271_ssid ssids[SCHED_SCAN_MAX_SSIDS];
 206         u8 padding[3];
 207 } __packed;
 208
 209 struct wl1271_cmd_sched_scan_start {
 210         struct wl1271_cmd_header header;
 211
 212         u8 tag;
 213         u8 padding[3];
 214 } __packed;
 215
 216 struct wl1271_cmd_sched_scan_stop {
 217         struct wl1271_cmd_header header;
 218
 219         u8 tag;
 220         u8 padding[3];
 221 } __packed;
 222
 223
 224 #endif /* __WL1271_SCAN_H__ */