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
  37 #define WL1271_SCAN_MAX_CHANNELS       24
  38 #define WL1271_SCAN_DEFAULT_TAG        1
  39 #define WL1271_SCAN_CURRENT_TX_PWR     0
  40 #define WL1271_SCAN_OPT_ACTIVE         0
  41 #define WL1271_SCAN_OPT_PASSIVE        1
  42 #define WL1271_SCAN_OPT_PRIORITY_HIGH  4
  43 #define WL1271_SCAN_BAND_2_4_GHZ 0
  44 #define WL1271_SCAN_BAND_5_GHZ 1
  45
  46 #define WL1271_SCAN_TIMEOUT    10000 /* msec */
  47
  48 enum {
  49         WL1271_SCAN_STATE_IDLE,
  50         WL1271_SCAN_STATE_2GHZ_ACTIVE,
  51         WL1271_SCAN_STATE_2GHZ_PASSIVE,
  52         WL1271_SCAN_STATE_5GHZ_ACTIVE,
  53         WL1271_SCAN_STATE_5GHZ_PASSIVE,
  54         WL1271_SCAN_STATE_DONE
  55 };
  56
  57 struct basic_scan_params {
  58         __le32 rx_config_options;
  59         __le32 rx_filter_options;
  60         /* Scan option flags (WL1271_SCAN_OPT_*) */
  61         __le16 scan_options;
  62         /* Number of scan channels in the list (maximum 30) */
  63         u8 n_ch;
  64         /* This field indicates the number of probe requests to send
  65            per channel for an active scan */
  66         u8 n_probe_reqs;
  67         /* Rate bit field for sending the probes */
  68         __le32 tx_rate;
  69         u8 tid_trigger;
  70         u8 ssid_len;
  71         /* in order to align */
  72         u8 padding1[2];
  73         u8 ssid[IW_ESSID_MAX_SIZE];
  74         /* Band to scan */
  75         u8 band;
  76         u8 use_ssid_list;
  77         u8 scan_tag;
  78         u8 padding2;
  79 } __packed;
  80
  81 struct basic_scan_channel_params {
  82         /* Duration in TU to wait for frames on a channel for active scan */
  83         __le32 min_duration;
  84         __le32 max_duration;
  85         __le32 bssid_lsb;
  86         __le16 bssid_msb;
  87         u8 early_termination;
  88         u8 tx_power_att;
  89         u8 channel;
  90         /* FW internal use only! */
  91         u8 dfs_candidate;
  92         u8 activity_detected;
  93         u8 pad;
  94 } __packed;
  95
  96 struct wl1271_cmd_scan {
  97         struct wl1271_cmd_header header;
  98
  99         struct basic_scan_params params;
 100         struct basic_scan_channel_params channels[WL1271_SCAN_MAX_CHANNELS];
 101 } __packed;
 102
 103 struct wl1271_cmd_trigger_scan_to {
 104         struct wl1271_cmd_header header;
 105
 106         __le32 timeout;
 107 } __packed;
 108
 109 #endif /* __WL1271_SCAN_H__ */