Quelle  scan.h   Sprache: C

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * This file is part of wl1271
 *
 * Copyright (C) 2009-2010 Nokia Corporation
 *
 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
 */

#ifndef __SCAN_H__
#define __SCAN_H__

#include "wlcore.h"

int wlcore_scan(struct wl1271 *wl, struct ieee80211_vif *vif,
  const u8 *ssid, size_t ssid_len,
  struct cfg80211_scan_request *req);
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 wl12xx_vif *wlvif);
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_scan_ies *ies);
int wl1271_scan_sched_scan_start(struct wl1271 *wl, struct wl12xx_vif *wlvif);
void wlcore_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 wl1271_cmd_trigger_scan_to {
 struct wl1271_cmd_header header;

 __le32 timeout;
} __packed;

#define MAX_CHANNELS_2GHZ 14
#define MAX_CHANNELS_4GHZ 4

/*
 * This max value here is used only for the struct definition of
 * wlcore_scan_channels. This struct is used by both 12xx
 * and 18xx (which have different max 5ghz channels value).
 * In order to make sure this is large enough, just use the
 * max possible 5ghz channels.
 */
#define MAX_CHANNELS_5GHZ 42

#define SCAN_MAX_CYCLE_INTERVALS 16

/* The FW intervals can take up to 16 entries.
 * The 1st entry isn't used (scan is immediate). The last
 * entry should be used for the long_interval
 */
#define SCAN_MAX_SHORT_INTERVALS (SCAN_MAX_CYCLE_INTERVALS - 2)
#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;

#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 wlcore_scan_channels {
 u8 passive[SCAN_MAX_BANDS]; /* number of passive scan channels */
 u8 active[SCAN_MAX_BANDS];  /* number of active scan channels */
 u8 dfs;     /* number of dfs channels in 5ghz */
 u8 passive_active; /* number of passive before active channels 2.4ghz */

 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];
};

enum {
 SCAN_TYPE_SEARCH = 0,
 SCAN_TYPE_PERIODIC = 1,
 SCAN_TYPE_TRACKING = 2,
};

bool
wlcore_set_scan_chan_params(struct wl1271 *wl,
       struct wlcore_scan_channels *cfg,
       struct ieee80211_channel *channels[],
       u32 n_channels,
       u32 n_ssids,
       int scan_type);

int
wlcore_scan_sched_scan_ssid_list(struct wl1271 *wl,
     struct wl12xx_vif *wlvif,
     struct cfg80211_sched_scan_request *req);

#endif /* __WL1271_SCAN_H__ */