78 lines
2.6 KiB
C
78 lines
2.6 KiB
C
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/*
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* Copyright (c) 2012 Neratec Solutions AG
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef DFS_PRI_DETECTOR_H
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#define DFS_PRI_DETECTOR_H
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#include <linux/list.h>
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extern struct ath_dfs_pool_stats global_dfs_pool_stats;
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/**
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* struct pri_sequence - sequence of pulses matching one PRI
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* @head: list_head
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* @pri: pulse repetition interval (PRI) in usecs
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* @dur: duration of sequence in usecs
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* @count: number of pulses in this sequence
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* @count_falses: number of not matching pulses in this sequence
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* @first_ts: time stamp of first pulse in usecs
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* @last_ts: time stamp of last pulse in usecs
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* @deadline_ts: deadline when this sequence becomes invalid (first_ts + dur)
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*/
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struct pri_sequence {
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struct list_head head;
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u32 pri;
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u32 dur;
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u32 count;
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u32 count_falses;
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u64 first_ts;
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u64 last_ts;
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u64 deadline_ts;
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};
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/**
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* struct pri_detector - PRI detector element for a dedicated radar type
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* @exit(): destructor
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* @add_pulse(): add pulse event, returns pri_sequence if pattern was detected
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* @reset(): clear states and reset to given time stamp
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* @rs: detector specs for this detector element
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* @last_ts: last pulse time stamp considered for this element in usecs
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* @sequences: list_head holding potential pulse sequences
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* @pulses: list connecting pulse_elem objects
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* @count: number of pulses in queue
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* @max_count: maximum number of pulses to be queued
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* @window_size: window size back from newest pulse time stamp in usecs
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*/
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struct pri_detector {
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void (*exit) (struct pri_detector *de);
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struct pri_sequence *
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(*add_pulse)(struct pri_detector *de, struct pulse_event *e);
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void (*reset) (struct pri_detector *de, u64 ts);
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/* private: internal use only */
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const struct radar_detector_specs *rs;
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u64 last_ts;
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struct list_head sequences;
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struct list_head pulses;
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u32 count;
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u32 max_count;
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u32 window_size;
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};
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struct pri_detector *pri_detector_init(const struct radar_detector_specs *rs);
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#endif /* DFS_PRI_DETECTOR_H */
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