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/*
* This file is part of wl1271
*
* Copyright (C) 2009-2010 Nokia Corporation
*
* Contact: Luciano Coelho <luciano.coelho@nokia.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
#ifndef __SCAN_H__
#define __SCAN_H__
#include "wlcore.h"
int wl1271_scan(struct wl1271 *wl, struct ieee80211_vif *vif,
const u8 *ssid, size_t ssid_len,
struct cfg80211_scan_request *req);
int wl1271_scan_stop(struct wl1271 *wl);
int wl1271_scan_build_probe_req(struct wl1271 *wl,
const u8 *ssid, size_t ssid_len,
const u8 *ie, size_t ie_len, u8 band);
void wl1271_scan_stm(struct wl1271 *wl, struct ieee80211_vif *vif);
void wl1271_scan_complete_work(struct work_struct *work);
int wl1271_scan_sched_scan_config(struct wl1271 *wl,
struct wl12xx_vif *wlvif,
struct cfg80211_sched_scan_request *req,
struct ieee80211_sched_scan_ies *ies);
int wl1271_scan_sched_scan_start(struct wl1271 *wl, struct wl12xx_vif *wlvif);
void wl1271_scan_sched_scan_stop(struct wl1271 *wl, struct wl12xx_vif *wlvif);
void wl1271_scan_sched_scan_results(struct wl1271 *wl);
#define WL1271_SCAN_MAX_CHANNELS 24
#define WL1271_SCAN_DEFAULT_TAG 1
#define WL1271_SCAN_CURRENT_TX_PWR 0
#define WL1271_SCAN_OPT_ACTIVE 0
#define WL1271_SCAN_OPT_PASSIVE 1
#define WL1271_SCAN_OPT_SPLIT_SCAN 2
#define WL1271_SCAN_OPT_PRIORITY_HIGH 4
/* scan even if we fail to enter psm */
#define WL1271_SCAN_OPT_FORCE 8
#define WL1271_SCAN_BAND_2_4_GHZ 0
#define WL1271_SCAN_BAND_5_GHZ 1
#define WL1271_SCAN_TIMEOUT 30000 /* msec */
enum {
WL1271_SCAN_STATE_IDLE,
WL1271_SCAN_STATE_2GHZ_ACTIVE,
WL1271_SCAN_STATE_2GHZ_PASSIVE,
WL1271_SCAN_STATE_5GHZ_ACTIVE,
WL1271_SCAN_STATE_5GHZ_PASSIVE,
WL1271_SCAN_STATE_DONE
};
struct basic_scan_params {
/* Scan option flags (WL1271_SCAN_OPT_*) */
__le16 scan_options;
u8 role_id;
/* Number of scan channels in the list (maximum 30) */
u8 n_ch;
/* This field indicates the number of probe requests to send
per channel for an active scan */
u8 n_probe_reqs;
u8 tid_trigger;
u8 ssid_len;
u8 use_ssid_list;
/* Rate bit field for sending the probes */
__le32 tx_rate;
u8 ssid[IEEE80211_MAX_SSID_LEN];
/* Band to scan */
u8 band;
u8 scan_tag;
u8 padding2[2];
} __packed;
struct basic_scan_channel_params {
/* Duration in TU to wait for frames on a channel for active scan */
__le32 min_duration;
__le32 max_duration;
__le32 bssid_lsb;
__le16 bssid_msb;
u8 early_termination;
u8 tx_power_att;
u8 channel;
/* FW internal use only! */
u8 dfs_candidate;
u8 activity_detected;
u8 pad;
} __packed;
struct wl1271_cmd_scan {
struct wl1271_cmd_header header;
struct basic_scan_params params;
struct basic_scan_channel_params channels[WL1271_SCAN_MAX_CHANNELS];
/* src mac address */
u8 addr[ETH_ALEN];
u8 padding[2];
} __packed;
struct wl1271_cmd_trigger_scan_to {
struct wl1271_cmd_header header;
__le32 timeout;
} __packed;
#define MAX_CHANNELS_2GHZ 14
#define MAX_CHANNELS_5GHZ 23
#define MAX_CHANNELS_4GHZ 4
#define SCAN_MAX_CYCLE_INTERVALS 16
#define SCAN_MAX_BANDS 3
enum {
SCAN_SSID_FILTER_ANY = 0,
SCAN_SSID_FILTER_SPECIFIC = 1,
SCAN_SSID_FILTER_LIST = 2,
SCAN_SSID_FILTER_DISABLED = 3
};
enum {
SCAN_BSS_TYPE_INDEPENDENT,
SCAN_BSS_TYPE_INFRASTRUCTURE,
SCAN_BSS_TYPE_ANY,
};
#define SCAN_CHANNEL_FLAGS_DFS BIT(0) /* channel is passive until an
activity is detected on it */
#define SCAN_CHANNEL_FLAGS_DFS_ENABLED BIT(1)
struct conn_scan_ch_params {
__le16 min_duration;
__le16 max_duration;
__le16 passive_duration;
u8 channel;
u8 tx_power_att;
/* bit 0: DFS channel; bit 1: DFS enabled */
u8 flags;
u8 padding[3];
} __packed;
struct wl1271_cmd_sched_scan_config {
struct wl1271_cmd_header header;
__le32 intervals[SCAN_MAX_CYCLE_INTERVALS];
s8 rssi_threshold; /* for filtering (in dBm) */
s8 snr_threshold; /* for filtering (in dB) */
u8 cycles; /* maximum number of scan cycles */
u8 report_after; /* report when this number of results are received */
u8 terminate; /* stop scanning after reporting */
u8 tag;
u8 bss_type; /* for filtering */
u8 filter_type;
u8 ssid_len; /* For SCAN_SSID_FILTER_SPECIFIC */
u8 ssid[IEEE80211_MAX_SSID_LEN];
u8 n_probe_reqs; /* Number of probes requests per channel */
u8 passive[SCAN_MAX_BANDS];
u8 active[SCAN_MAX_BANDS];
u8 dfs;
u8 n_pactive_ch; /* number of pactive (passive until fw detects energy)
channels in BG band */
u8 role_id;
u8 padding[1];
struct conn_scan_ch_params channels_2[MAX_CHANNELS_2GHZ];
struct conn_scan_ch_params channels_5[MAX_CHANNELS_5GHZ];
struct conn_scan_ch_params channels_4[MAX_CHANNELS_4GHZ];
} __packed;
#define SCHED_SCAN_MAX_SSIDS 16
enum {
SCAN_SSID_TYPE_PUBLIC = 0,
SCAN_SSID_TYPE_HIDDEN = 1,
};
struct wl1271_ssid {
u8 type;
u8 len;
u8 ssid[IEEE80211_MAX_SSID_LEN];
/* u8 padding[2]; */
} __packed;
struct wl1271_cmd_sched_scan_ssid_list {
struct wl1271_cmd_header header;
u8 n_ssids;
struct wl1271_ssid ssids[SCHED_SCAN_MAX_SSIDS];
u8 role_id;
u8 padding[2];
} __packed;
struct wl1271_cmd_sched_scan_start {
struct wl1271_cmd_header header;
u8 tag;
u8 role_id;
u8 padding[2];
} __packed;
struct wl1271_cmd_sched_scan_stop {
struct wl1271_cmd_header header;
u8 tag;
u8 role_id;
u8 padding[2];
} __packed;
#endif /* __WL1271_SCAN_H__ */
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