dfs_pattern_detector.h

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/*
 * Copyright (c) 2012 Neratec Solutions AG
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef DFS_PATTERN_DETECTOR_H
#define DFS_PATTERN_DETECTOR_H

#include <linux/types.h>
#include <linux/list.h>
#include <linux/nl80211.h>

struct pulse_event {
    u64 ts;
    u16 freq;
    u8 width;
    u8 rssi;
};

struct radar_detector_specs {
    u8 type_id;
    u8 width_min;
    u8 width_max;
    u16 pri_min;
    u16 pri_max;
    u8 num_pri;
    u8 ppb;
    u8 ppb_thresh;
    u8 max_pri_tolerance;
};

struct dfs_pattern_detector {
    void (*exit)(struct dfs_pattern_detector *dpd);
    bool (*set_domain)(struct dfs_pattern_detector *dpd,
               enum nl80211_dfs_regions region);
    bool (*add_pulse)(struct dfs_pattern_detector *dpd,
              struct pulse_event *pe);

    enum nl80211_dfs_regions region;
    u8 num_radar_types;
    u64 last_pulse_ts;

    const struct radar_detector_specs *radar_spec;
    struct list_head channel_detectors;
};

#if defined(CONFIG_ATH9K_DFS_CERTIFIED)
extern struct dfs_pattern_detector *
dfs_pattern_detector_init(enum nl80211_dfs_regions region);
#else
static inline struct dfs_pattern_detector *
dfs_pattern_detector_init(enum nl80211_dfs_regions region)
{
    return NULL;
}
#endif /* CONFIG_ATH9K_DFS_CERTIFIED */

#endif /* DFS_PATTERN_DETECTOR_H */