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 __WL1271_SCAN_H__ 25#define __WL1271_SCAN_H__ 26 27#include "wl1271.h" 28 29int wl1271_scan(struct wl1271 *wl, const u8 *ssid, size_t ssid_len, 30 struct cfg80211_scan_request *req); 31int 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); 34void wl1271_scan_stm(struct wl1271 *wl); 35 36#define WL1271_SCAN_MAX_CHANNELS 24 37#define WL1271_SCAN_DEFAULT_TAG 1 38#define WL1271_SCAN_CURRENT_TX_PWR 0 39#define WL1271_SCAN_OPT_ACTIVE 0 40#define WL1271_SCAN_OPT_PASSIVE 1 41#define WL1271_SCAN_OPT_PRIORITY_HIGH 4 42#define WL1271_SCAN_CHAN_MIN_DURATION 30000 /* TU */ 43#define WL1271_SCAN_CHAN_MAX_DURATION 60000 /* TU */ 44#define WL1271_SCAN_BAND_2_4_GHZ 0 45#define WL1271_SCAN_BAND_5_GHZ 1 46#define WL1271_SCAN_PROBE_REQS 3 47 48enum { 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 57struct 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 81struct 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 96struct 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 103struct wl1271_cmd_trigger_scan_to { 104 struct wl1271_cmd_header header; 105 106 __le32 timeout; 107} __packed; 108 109#endif /* __WL1271_SCAN_H__ */ 110