| /* |
| * 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 */ |
