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 "wlcore.h" 28 29 int wl1271_scan(struct wl1271 *wl, struct ieee80211_vif *vif, 30 const u8 *ssid, size_t ssid_len, 31 struct cfg80211_scan_request *req); 32 int wl1271_scan_stop(struct wl1271 *wl); 33 int wl1271_scan_build_probe_req(struct wl1271 *wl, 34 const u8 *ssid, size_t ssid_len, 35 const u8 *ie, size_t ie_len, u8 band); 36 void wl1271_scan_stm(struct wl1271 *wl, struct ieee80211_vif *vif); 37 void wl1271_scan_complete_work(struct work_struct *work); 38 int wl1271_scan_sched_scan_config(struct wl1271 *wl, 39 struct wl12xx_vif *wlvif, 40 struct cfg80211_sched_scan_request *req, 41 struct ieee80211_sched_scan_ies *ies); 42 int wl1271_scan_sched_scan_start(struct wl1271 *wl, struct wl12xx_vif *wlvif); 43 void wl1271_scan_sched_scan_stop(struct wl1271 *wl, struct wl12xx_vif *wlvif); 44 void wl1271_scan_sched_scan_results(struct wl1271 *wl); 45 46 #define WL1271_SCAN_MAX_CHANNELS 24 47 #define WL1271_SCAN_DEFAULT_TAG 1 48 #define WL1271_SCAN_CURRENT_TX_PWR 0 49 #define WL1271_SCAN_OPT_ACTIVE 0 50 #define WL1271_SCAN_OPT_PASSIVE 1 51 #define WL1271_SCAN_OPT_SPLIT_SCAN 2 52 #define WL1271_SCAN_OPT_PRIORITY_HIGH 4 53 /* scan even if we fail to enter psm */ 54 #define WL1271_SCAN_OPT_FORCE 8 55 #define WL1271_SCAN_BAND_2_4_GHZ 0 56 #define WL1271_SCAN_BAND_5_GHZ 1 57 58 #define WL1271_SCAN_TIMEOUT 30000 /* msec */ 59 60 enum { 61 WL1271_SCAN_STATE_IDLE, 62 WL1271_SCAN_STATE_2GHZ_ACTIVE, 63 WL1271_SCAN_STATE_2GHZ_PASSIVE, 64 WL1271_SCAN_STATE_5GHZ_ACTIVE, 65 WL1271_SCAN_STATE_5GHZ_PASSIVE, 66 WL1271_SCAN_STATE_DONE 67 }; 68 69 struct basic_scan_params { 70 /* Scan option flags (WL1271_SCAN_OPT_*) */ 71 __le16 scan_options; 72 u8 role_id; 73 /* Number of scan channels in the list (maximum 30) */ 74 u8 n_ch; 75 /* This field indicates the number of probe requests to send 76 per channel for an active scan */ 77 u8 n_probe_reqs; 78 u8 tid_trigger; 79 u8 ssid_len; 80 u8 use_ssid_list; 81 82 /* Rate bit field for sending the probes */ 83 __le32 tx_rate; 84 85 u8 ssid[IEEE80211_MAX_SSID_LEN]; 86 /* Band to scan */ 87 u8 band; 88 89 u8 scan_tag; 90 u8 padding2[2]; 91 } __packed; 92 93 struct basic_scan_channel_params { 94 /* Duration in TU to wait for frames on a channel for active scan */ 95 __le32 min_duration; 96 __le32 max_duration; 97 __le32 bssid_lsb; 98 __le16 bssid_msb; 99 u8 early_termination; 100 u8 tx_power_att; 101 u8 channel; 102 /* FW internal use only! */ 103 u8 dfs_candidate; 104 u8 activity_detected; 105 u8 pad; 106 } __packed; 107 108 struct wl1271_cmd_scan { 109 struct wl1271_cmd_header header; 110 111 struct basic_scan_params params; 112 struct basic_scan_channel_params channels[WL1271_SCAN_MAX_CHANNELS]; 113 114 /* src mac address */ 115 u8 addr[ETH_ALEN]; 116 u8 padding[2]; 117 } __packed; 118 119 struct wl1271_cmd_trigger_scan_to { 120 struct wl1271_cmd_header header; 121 122 __le32 timeout; 123 } __packed; 124 125 #define MAX_CHANNELS_2GHZ 14 126 #define MAX_CHANNELS_5GHZ 23 127 #define MAX_CHANNELS_4GHZ 4 128 129 #define SCAN_MAX_CYCLE_INTERVALS 16 130 #define SCAN_MAX_BANDS 3 131 132 enum { 133 SCAN_SSID_FILTER_ANY = 0, 134 SCAN_SSID_FILTER_SPECIFIC = 1, 135 SCAN_SSID_FILTER_LIST = 2, 136 SCAN_SSID_FILTER_DISABLED = 3 137 }; 138 139 enum { 140 SCAN_BSS_TYPE_INDEPENDENT, 141 SCAN_BSS_TYPE_INFRASTRUCTURE, 142 SCAN_BSS_TYPE_ANY, 143 }; 144 145 #define SCAN_CHANNEL_FLAGS_DFS BIT(0) /* channel is passive until an 146 activity is detected on it */ 147 #define SCAN_CHANNEL_FLAGS_DFS_ENABLED BIT(1) 148 149 struct conn_scan_ch_params { 150 __le16 min_duration; 151 __le16 max_duration; 152 __le16 passive_duration; 153 154 u8 channel; 155 u8 tx_power_att; 156 157 /* bit 0: DFS channel; bit 1: DFS enabled */ 158 u8 flags; 159 160 u8 padding[3]; 161 } __packed; 162 163 struct wl1271_cmd_sched_scan_config { 164 struct wl1271_cmd_header header; 165 166 __le32 intervals[SCAN_MAX_CYCLE_INTERVALS]; 167 168 s8 rssi_threshold; /* for filtering (in dBm) */ 169 s8 snr_threshold; /* for filtering (in dB) */ 170 171 u8 cycles; /* maximum number of scan cycles */ 172 u8 report_after; /* report when this number of results are received */ 173 u8 terminate; /* stop scanning after reporting */ 174 175 u8 tag; 176 u8 bss_type; /* for filtering */ 177 u8 filter_type; 178 179 u8 ssid_len; /* For SCAN_SSID_FILTER_SPECIFIC */ 180 u8 ssid[IEEE80211_MAX_SSID_LEN]; 181 182 u8 n_probe_reqs; /* Number of probes requests per channel */ 183 184 u8 passive[SCAN_MAX_BANDS]; 185 u8 active[SCAN_MAX_BANDS]; 186 187 u8 dfs; 188 189 u8 n_pactive_ch; /* number of pactive (passive until fw detects energy) 190 channels in BG band */ 191 u8 role_id; 192 u8 padding[1]; 193 194 struct conn_scan_ch_params channels_2[MAX_CHANNELS_2GHZ]; 195 struct conn_scan_ch_params channels_5[MAX_CHANNELS_5GHZ]; 196 struct conn_scan_ch_params channels_4[MAX_CHANNELS_4GHZ]; 197 } __packed; 198 199 200 #define SCHED_SCAN_MAX_SSIDS 16 201 202 enum { 203 SCAN_SSID_TYPE_PUBLIC = 0, 204 SCAN_SSID_TYPE_HIDDEN = 1, 205 }; 206 207 struct wl1271_ssid { 208 u8 type; 209 u8 len; 210 u8 ssid[IEEE80211_MAX_SSID_LEN]; 211 /* u8 padding[2]; */ 212 } __packed; 213 214 struct wl1271_cmd_sched_scan_ssid_list { 215 struct wl1271_cmd_header header; 216 217 u8 n_ssids; 218 struct wl1271_ssid ssids[SCHED_SCAN_MAX_SSIDS]; 219 u8 role_id; 220 u8 padding[2]; 221 } __packed; 222 223 struct wl1271_cmd_sched_scan_start { 224 struct wl1271_cmd_header header; 225 226 u8 tag; 227 u8 role_id; 228 u8 padding[2]; 229 } __packed; 230 231 struct wl1271_cmd_sched_scan_stop { 232 struct wl1271_cmd_header header; 233 234 u8 tag; 235 u8 role_id; 236 u8 padding[2]; 237 } __packed; 238 239 240 #endif /* __WL1271_SCAN_H__ */ 241