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_build_probe_req(struct wl1271 *wl,
  32                                 const u8 *ssid, size_t ssid_len,
  33                                 const u8 *ie, size_t ie_len, u8 band);
  34 void wl1271_scan_stm(struct wl1271 *wl);
  35 void wl1271_scan_complete_work(struct work_struct *work);
  36 int wl1271_scan_sched_scan_config(struct wl1271 *wl,
  37                                      struct cfg80211_sched_scan_request *req,
  38                                      struct ieee80211_sched_scan_ies *ies);
  39 int wl1271_scan_sched_scan_start(struct wl1271 *wl);
  40 void wl1271_scan_sched_scan_stop(struct wl1271 *wl);
  41 void wl1271_scan_sched_scan_results(struct wl1271 *wl);
  42
  43 #define WL1271_SCAN_MAX_CHANNELS       24
  44 #define WL1271_SCAN_DEFAULT_TAG        1
  45 #define WL1271_SCAN_CURRENT_TX_PWR     0
  46 #define WL1271_SCAN_OPT_ACTIVE         0
  47 #define WL1271_SCAN_OPT_PASSIVE        1
  48 #define WL1271_SCAN_OPT_PRIORITY_HIGH  4
  49 #define WL1271_SCAN_BAND_2_4_GHZ 0
  50 #define WL1271_SCAN_BAND_5_GHZ 1
  51
  52 #define WL1271_SCAN_TIMEOUT    10000 /* msec */
  53
  54 enum {
  55         WL1271_SCAN_STATE_IDLE,
  56         WL1271_SCAN_STATE_2GHZ_ACTIVE,
  57         WL1271_SCAN_STATE_2GHZ_PASSIVE,
  58         WL1271_SCAN_STATE_5GHZ_ACTIVE,
  59         WL1271_SCAN_STATE_5GHZ_PASSIVE,
  60         WL1271_SCAN_STATE_DONE
  61 };
  62
  63 struct basic_scan_params {
  64         __le32 rx_config_options;
  65         __le32 rx_filter_options;
  66         /* Scan option flags (WL1271_SCAN_OPT_*) */
  67         __le16 scan_options;
  68         /* Number of scan channels in the list (maximum 30) */
  69         u8 n_ch;
  70         /* This field indicates the number of probe requests to send
  71            per channel for an active scan */
  72         u8 n_probe_reqs;
  73         /* Rate bit field for sending the probes */
  74         __le32 tx_rate;
  75         u8 tid_trigger;
  76         u8 ssid_len;
  77         /* in order to align */
  78         u8 padding1[2];
  79         u8 ssid[IW_ESSID_MAX_SIZE];
  80         /* Band to scan */
  81         u8 band;
  82         u8 use_ssid_list;
  83         u8 scan_tag;
  84         u8 padding2;
  85 } __packed;
  86
  87 struct basic_scan_channel_params {
  88         /* Duration in TU to wait for frames on a channel for active scan */
  89         __le32 min_duration;
  90         __le32 max_duration;
  91         __le32 bssid_lsb;
  92         __le16 bssid_msb;
  93         u8 early_termination;
  94         u8 tx_power_att;
  95         u8 channel;
  96         /* FW internal use only! */
  97         u8 dfs_candidate;
  98         u8 activity_detected;
  99         u8 pad;
 100 } __packed;
 101
 102 struct wl1271_cmd_scan {
 103         struct wl1271_cmd_header header;
 104
 105         struct basic_scan_params params;
 106         struct basic_scan_channel_params channels[WL1271_SCAN_MAX_CHANNELS];
 107 } __packed;
 108
 109 struct wl1271_cmd_trigger_scan_to {
 110         struct wl1271_cmd_header header;
 111
 112         __le32 timeout;
 113 } __packed;
 114
 115 #define MAX_CHANNELS_ALL_BANDS 41
 116 #define SCAN_MAX_CYCLE_INTERVALS 16
 117 #define SCAN_MAX_BANDS 3
 118
 119 enum {
 120         SCAN_CHANNEL_TYPE_2GHZ_PASSIVE,
 121         SCAN_CHANNEL_TYPE_2GHZ_ACTIVE,
 122         SCAN_CHANNEL_TYPE_5GHZ_PASSIVE,
 123         SCAN_CHANNEL_TYPE_5GHZ_ACTIVE,
 124         SCAN_CHANNEL_TYPE_5GHZ_DFS,
 125 };
 126
 127 enum {
 128         SCAN_SSID_FILTER_ANY      = 0,
 129         SCAN_SSID_FILTER_SPECIFIC = 1,
 130         SCAN_SSID_FILTER_LIST     = 2,
 131         SCAN_SSID_FILTER_DISABLED = 3
 132 };
 133
 134 enum {
 135         SCAN_BSS_TYPE_INDEPENDENT,
 136         SCAN_BSS_TYPE_INFRASTRUCTURE,
 137         SCAN_BSS_TYPE_ANY,
 138 };
 139
 140 #define SCAN_CHANNEL_FLAGS_DFS          BIT(0)
 141 #define SCAN_CHANNEL_FLAGS_DFS_ENABLED  BIT(1)
 142
 143 struct conn_scan_ch_params {
 144         __le16 min_duration;
 145         __le16 max_duration;
 146         __le16 passive_duration;
 147
 148         u8  channel;
 149         u8  tx_power_att;
 150
 151         /* bit 0: DFS channel; bit 1: DFS enabled */
 152         u8  flags;
 153
 154         u8  padding[3];
 155 } __packed;
 156
 157 struct wl1271_cmd_sched_scan_config {
 158         struct wl1271_cmd_header header;
 159
 160         __le32 intervals[SCAN_MAX_CYCLE_INTERVALS];
 161
 162         s8 rssi_threshold; /* for filtering (in dBm) */
 163         s8 snr_threshold;  /* for filtering (in dB) */
 164
 165         u8 cycles;       /* maximum number of scan cycles */
 166         u8 report_after; /* report when this number of results are received */
 167         u8 terminate;    /* stop scanning after reporting */
 168
 169         u8 tag;
 170         u8 bss_type; /* for filtering */
 171         u8 filter_type;
 172
 173         u8 ssid_len;     /* For SCAN_SSID_FILTER_SPECIFIC */
 174         u8 ssid[IW_ESSID_MAX_SIZE];
 175
 176         u8 n_probe_reqs; /* Number of probes requests per channel */
 177
 178         u8 passive[SCAN_MAX_BANDS];
 179         u8 active[SCAN_MAX_BANDS];
 180
 181         u8 dfs;
 182
 183         u8 padding[3];
 184
 185         struct conn_scan_ch_params channels[MAX_CHANNELS_ALL_BANDS];
 186 } __packed;
 187
 188
 189 #define SCHED_SCAN_MAX_SSIDS 8
 190
 191 enum {
 192         SCAN_SSID_TYPE_PUBLIC = 0,
 193         SCAN_SSID_TYPE_HIDDEN = 1,
 194 };
 195
 196 struct wl1271_ssid {
 197         u8 type;
 198         u8 len;
 199         u8 ssid[IW_ESSID_MAX_SIZE];
 200         /* u8 padding[2]; */
 201 } __packed;
 202
 203 struct wl1271_cmd_sched_scan_ssid_list {
 204         struct wl1271_cmd_header header;
 205
 206         u8 n_ssids;
 207         struct wl1271_ssid ssids[SCHED_SCAN_MAX_SSIDS];
 208         u8 padding[3];
 209 } __packed;
 210
 211 struct wl1271_cmd_sched_scan_start {
 212         struct wl1271_cmd_header header;
 213
 214         u8 tag;
 215         u8 padding[3];
 216 } __packed;
 217
 218 struct wl1271_cmd_sched_scan_stop {
 219         struct wl1271_cmd_header header;
 220
 221         u8 tag;
 222         u8 padding[3];
 223 } __packed;
 224
 225
 226 #endif /* __WL1271_SCAN_H__ */