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_TRIGGERED_SCAN 2
  50 #define WL1271_SCAN_OPT_PRIORITY_HIGH  4
  51 /* scan even if we fail to enter psm */
  52 #define WL1271_SCAN_OPT_FORCE          8
  53 #define WL1271_SCAN_BAND_2_4_GHZ 0
  54 #define WL1271_SCAN_BAND_5_GHZ 1
  55
  56 #define WL1271_SCAN_TIMEOUT    10000 /* msec */
  57
  58 enum {
  59         WL1271_SCAN_STATE_IDLE,
  60         WL1271_SCAN_STATE_2GHZ_ACTIVE,
  61         WL1271_SCAN_STATE_2GHZ_PASSIVE,
  62         WL1271_SCAN_STATE_5GHZ_ACTIVE,
  63         WL1271_SCAN_STATE_5GHZ_PASSIVE,
  64         WL1271_SCAN_STATE_DONE
  65 };
  66
  67 struct basic_scan_params {
  68         /* Scan option flags (WL1271_SCAN_OPT_*) */
  69         __le16 scan_options;
  70         u8 role_id;
  71         /* Number of scan channels in the list (maximum 30) */
  72         u8 n_ch;
  73         /* This field indicates the number of probe requests to send
  74            per channel for an active scan */
  75         u8 n_probe_reqs;
  76         u8 tid_trigger;
  77         u8 ssid_len;
  78         u8 use_ssid_list;
  79
  80         /* Rate bit field for sending the probes */
  81         __le32 tx_rate;
  82
  83         u8 ssid[IEEE80211_MAX_SSID_LEN];
  84         /* Band to scan */
  85         u8 band;
  86
  87         u8 scan_tag;
  88         u8 padding2[2];
  89 } __packed;
  90
  91 struct basic_scan_channel_params {
  92         /* Duration in TU to wait for frames on a channel for active scan */
  93         __le32 min_duration;
  94         __le32 max_duration;
  95         __le32 bssid_lsb;
  96         __le16 bssid_msb;
  97         u8 early_termination;
  98         u8 tx_power_att;
  99         u8 channel;
 100         /* FW internal use only! */
 101         u8 dfs_candidate;
 102         u8 activity_detected;
 103         u8 pad;
 104 } __packed;
 105
 106 struct wl1271_cmd_scan {
 107         struct wl1271_cmd_header header;
 108
 109         struct basic_scan_params params;
 110         struct basic_scan_channel_params channels[WL1271_SCAN_MAX_CHANNELS];
 111
 112         /* src mac address */
 113         u8 addr[ETH_ALEN];
 114         u8 padding[2];
 115 } __packed;
 116
 117 struct wl1271_cmd_trigger_scan_to {
 118         struct wl1271_cmd_header header;
 119
 120         __le32 timeout;
 121 } __packed;
 122
 123 #define MAX_CHANNELS_2GHZ       14
 124 #define MAX_CHANNELS_5GHZ       23
 125 #define MAX_CHANNELS_4GHZ       4
 126
 127 #define SCAN_MAX_CYCLE_INTERVALS 16
 128 #define SCAN_MAX_BANDS 3
 129
 130 enum {
 131         SCAN_SSID_FILTER_ANY      = 0,
 132         SCAN_SSID_FILTER_SPECIFIC = 1,
 133         SCAN_SSID_FILTER_LIST     = 2,
 134         SCAN_SSID_FILTER_DISABLED = 3
 135 };
 136
 137 enum {
 138         SCAN_BSS_TYPE_INDEPENDENT,
 139         SCAN_BSS_TYPE_INFRASTRUCTURE,
 140         SCAN_BSS_TYPE_ANY,
 141 };
 142
 143 #define SCAN_CHANNEL_FLAGS_DFS          BIT(0)
 144 #define SCAN_CHANNEL_FLAGS_DFS_ENABLED  BIT(1)
 145
 146 struct conn_scan_ch_params {
 147         __le16 min_duration;
 148         __le16 max_duration;
 149         __le16 passive_duration;
 150
 151         u8  channel;
 152         u8  tx_power_att;
 153
 154         /* bit 0: DFS channel; bit 1: DFS enabled */
 155         u8  flags;
 156
 157         u8  padding[3];
 158 } __packed;
 159
 160 struct wl1271_cmd_sched_scan_config {
 161         struct wl1271_cmd_header header;
 162
 163         __le32 intervals[SCAN_MAX_CYCLE_INTERVALS];
 164
 165         s8 rssi_threshold; /* for filtering (in dBm) */
 166         s8 snr_threshold;  /* for filtering (in dB) */
 167
 168         u8 cycles;       /* maximum number of scan cycles */
 169         u8 report_after; /* report when this number of results are received */
 170         u8 terminate;    /* stop scanning after reporting */
 171
 172         u8 tag;
 173         u8 bss_type; /* for filtering */
 174         u8 filter_type;
 175
 176         u8 ssid_len;     /* For SCAN_SSID_FILTER_SPECIFIC */
 177         u8 ssid[IEEE80211_MAX_SSID_LEN];
 178
 179         u8 n_probe_reqs; /* Number of probes requests per channel */
 180
 181         u8 passive[SCAN_MAX_BANDS];
 182         u8 active[SCAN_MAX_BANDS];
 183
 184         u8 dfs;
 185
 186         u8 padding[3];
 187
 188         struct conn_scan_ch_params channels_2[MAX_CHANNELS_2GHZ];
 189         struct conn_scan_ch_params channels_5[MAX_CHANNELS_5GHZ];
 190         struct conn_scan_ch_params channels_4[MAX_CHANNELS_4GHZ];
 191 } __packed;
 192
 193
 194 #define SCHED_SCAN_MAX_SSIDS 16
 195
 196 enum {
 197         SCAN_SSID_TYPE_PUBLIC = 0,
 198         SCAN_SSID_TYPE_HIDDEN = 1,
 199 };
 200
 201 struct wl1271_ssid {
 202         u8 type;
 203         u8 len;
 204         u8 ssid[IEEE80211_MAX_SSID_LEN];
 205         /* u8 padding[2]; */
 206 } __packed;
 207
 208 struct wl1271_cmd_sched_scan_ssid_list {
 209         struct wl1271_cmd_header header;
 210
 211         u8 n_ssids;
 212         struct wl1271_ssid ssids[SCHED_SCAN_MAX_SSIDS];
 213         u8 padding[3];
 214 } __packed;
 215
 216 struct wl1271_cmd_sched_scan_start {
 217         struct wl1271_cmd_header header;
 218
 219         u8 tag;
 220         u8 padding[3];
 221 } __packed;
 222
 223 struct wl1271_cmd_sched_scan_stop {
 224         struct wl1271_cmd_header header;
 225
 226         u8 tag;
 227         u8 padding[3];
 228 } __packed;
 229
 230
 231 #endif /* __WL1271_SCAN_H__ */