| /* | |
| * 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); | |
| /* private: internal use only */ | |
| const struct radar_detector_specs *rs; | |
| 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 */ |