| /* |
| * 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_PATTERN_DETECTOR_H |
| #define DFS_PATTERN_DETECTOR_H |
| |
| #include <linux/types.h> |
| #include <linux/list.h> |
| #include <linux/nl80211.h> |
| |
| /** |
| * struct pulse_event - describing pulses reported by PHY |
| * @ts: pulse time stamp in us |
| * @freq: channel frequency in MHz |
| * @width: pulse duration in us |
| * @rssi: rssi of radar event |
| */ |
| struct pulse_event { |
| u64 ts; |
| u16 freq; |
| u8 width; |
| u8 rssi; |
| }; |
| |
| /** |
| * struct radar_detector_specs - detector specs for a radar pattern type |
| * @type_id: pattern type, as defined by regulatory |
| * @width_min: minimum radar pulse width in [us] |
| * @width_max: maximum radar pulse width in [us] |
| * @pri_min: minimum pulse repetition interval in [us] (including tolerance) |
| * @pri_max: minimum pri in [us] (including tolerance) |
| * @num_pri: maximum number of different pri for this type |
| * @ppb: pulses per bursts for this type |
| * @ppb_thresh: number of pulses required to trigger detection |
| * @max_pri_tolerance: pulse time stamp tolerance on both sides [us] |
| */ |
| struct radar_detector_specs { |
| u8 type_id; |
| u8 width_min; |
| u8 width_max; |
| u16 pri_min; |
| u16 pri_max; |
| u8 num_pri; |
| u8 ppb; |
| u8 ppb_thresh; |
| u8 max_pri_tolerance; |
| }; |
| |
| /** |
| * struct dfs_pattern_detector - DFS pattern detector |
| * @exit(): destructor |
| * @set_dfs_domain(): set DFS domain, resets detector lines upon domain changes |
| * @add_pulse(): add radar pulse to detector, returns true on detection |
| * @region: active DFS region, NL80211_DFS_UNSET until set |
| * @num_radar_types: number of different radar types |
| * @last_pulse_ts: time stamp of last valid pulse in usecs |
| * @radar_detector_specs: array of radar detection specs |
| * @channel_detectors: list connecting channel_detector elements |
| */ |
| struct dfs_pattern_detector { |
| void (*exit)(struct dfs_pattern_detector *dpd); |
| bool (*set_dfs_domain)(struct dfs_pattern_detector *dpd, |
| enum nl80211_dfs_regions region); |
| bool (*add_pulse)(struct dfs_pattern_detector *dpd, |
| struct pulse_event *pe); |
| |
| enum nl80211_dfs_regions region; |
| u8 num_radar_types; |
| u64 last_pulse_ts; |
| |
| const struct radar_detector_specs *radar_spec; |
| struct list_head channel_detectors; |
| }; |
| |
| /** |
| * dfs_pattern_detector_init() - constructor for pattern detector class |
| * @param region: DFS domain to be used, can be NL80211_DFS_UNSET at creation |
| * @return instance pointer on success, NULL otherwise |
| */ |
| #if defined(CONFIG_ATH9K_DFS_CERTIFIED) |
| extern struct dfs_pattern_detector * |
| dfs_pattern_detector_init(enum nl80211_dfs_regions region); |
| #else |
| static inline struct dfs_pattern_detector * |
| dfs_pattern_detector_init(enum nl80211_dfs_regions region) |
| { |
| return NULL; |
| } |
| #endif /* CONFIG_ATH9K_DFS_CERTIFIED */ |
| |
| #endif /* DFS_PATTERN_DETECTOR_H */ |
