/* * 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_PRI_DETECTOR_H #define DFS_PRI_DETECTOR_H #include <linux/list.h> extern struct ath_dfs_pool_stats global_dfs_pool_stats; /** * struct pri_sequence - sequence of pulses matching one PRI * @head: list_head * @pri: pulse repetition interval (PRI) in usecs * @dur: duration of sequence in usecs * @count: number of pulses in this sequence * @count_falses: number of not matching pulses in this sequence * @first_ts: time stamp of first pulse in usecs * @last_ts: time stamp of last pulse in usecs * @deadline_ts: deadline when this sequence becomes invalid (first_ts + dur) */ struct pri_sequence { struct list_head head; u32 pri; u32 dur; u32 count; u32 count_falses; u64 first_ts; u64 last_ts; u64 deadline_ts; }; /** * struct pri_detector - PRI detector element for a dedicated radar type * @exit(): destructor * @add_pulse(): add pulse event, returns pri_sequence if pattern was detected * @reset(): clear states and reset to given time stamp * @rs: detector specs for this detector element * @last_ts: last pulse time stamp considered for this element in usecs * @sequences: list_head holding potential pulse sequences * @pulses: list connecting pulse_elem objects * @count: number of pulses in queue * @max_count: maximum number of pulses to be queued * @window_size: window size back from newest pulse time stamp in usecs */ struct pri_detector { void (*exit) (struct pri_detector *de); struct pri_sequence * (*add_pulse)(struct pri_detector *de, struct pulse_event *e); void (*reset) (struct pri_detector *de, u64 ts); const struct radar_detector_specs *rs; /* private: internal use only */ u64 last_ts; struct list_head sequences; struct list_head pulses; u32 count; u32 max_count; u32 window_size; }; struct pri_detector *pri_detector_init(const struct radar_detector_specs *rs); #endif /* DFS_PRI_DETECTOR_H */