diff options
Diffstat (limited to 'drivers/net/wireless/ath/dfs_pri_detector.h')
| -rw-r--r-- | drivers/net/wireless/ath/dfs_pri_detector.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/dfs_pri_detector.h b/drivers/net/wireless/ath/dfs_pri_detector.h new file mode 100644 index 000000000..86339f2b4 --- /dev/null +++ b/drivers/net/wireless/ath/dfs_pri_detector.h @@ -0,0 +1,78 @@ +/* + * 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 */ |