Edit File: regulatory.h
#ifndef __NET_REGULATORY_H #define __NET_REGULATORY_H /* * regulatory support structures * * Copyright 2008-2009 Luis R. Rodriguez <mcgrof@qca.qualcomm.com> * Copyright (C) 2018 Intel Corporation * * 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. */ #include <linux/rcupdate.h> /** * enum environment_cap - Environment parsed from country IE * @ENVIRON_ANY: indicates country IE applies to both indoor and * outdoor operation. * @ENVIRON_INDOOR: indicates country IE applies only to indoor operation * @ENVIRON_OUTDOOR: indicates country IE applies only to outdoor operation */ enum environment_cap { ENVIRON_ANY, ENVIRON_INDOOR, ENVIRON_OUTDOOR, }; /** * struct regulatory_request - used to keep track of regulatory requests * * @rcu_head: RCU head struct used to free the request * @wiphy_idx: this is set if this request's initiator is * %REGDOM_SET_BY_COUNTRY_IE or %REGDOM_SET_BY_DRIVER. This * can be used by the wireless core to deal with conflicts * and potentially inform users of which devices specifically * cased the conflicts. * @initiator: indicates who sent this request, could be any of * of those set in nl80211_reg_initiator (%NL80211_REGDOM_SET_BY_*) * @alpha2: the ISO / IEC 3166 alpha2 country code of the requested * regulatory domain. We have a few special codes: * 00 - World regulatory domain * 99 - built by driver but a specific alpha2 cannot be determined * 98 - result of an intersection between two regulatory domains * 97 - regulatory domain has not yet been configured * @dfs_region: If CRDA responded with a regulatory domain that requires * DFS master operation on a known DFS region (NL80211_DFS_*), * dfs_region represents that region. Drivers can use this and the * @alpha2 to adjust their device's DFS parameters as required. * @user_reg_hint_type: if the @initiator was of type * %NL80211_REGDOM_SET_BY_USER, this classifies the type * of hint passed. This could be any of the %NL80211_USER_REG_HINT_* * types. * @intersect: indicates whether the wireless core should intersect * the requested regulatory domain with the presently set regulatory * domain. * @processed: indicates whether or not this requests has already been * processed. When the last request is processed it means that the * currently regulatory domain set on cfg80211 is updated from * CRDA and can be used by other regulatory requests. When a * the last request is not yet processed we must yield until it * is processed before processing any new requests. * @country_ie_checksum: checksum of the last processed and accepted * country IE * @country_ie_env: lets us know if the AP is telling us we are outdoor, * indoor, or if it doesn't matter * @list: used to insert into the reg_requests_list linked list */ struct regulatory_request { struct rcu_head rcu_head; int wiphy_idx; enum nl80211_reg_initiator initiator; enum nl80211_user_reg_hint_type user_reg_hint_type; char alpha2[2]; enum nl80211_dfs_regions dfs_region; bool intersect; bool processed; enum environment_cap country_ie_env; struct list_head list; }; /** * enum ieee80211_regulatory_flags - device regulatory flags * * @REGULATORY_CUSTOM_REG: tells us the driver for this device * has its own custom regulatory domain and cannot identify the * ISO / IEC 3166 alpha2 it belongs to. When this is enabled * we will disregard the first regulatory hint (when the * initiator is %REGDOM_SET_BY_CORE). Drivers that use * wiphy_apply_custom_regulatory() should have this flag set * or the regulatory core will set it for the wiphy. * If you use regulatory_hint() *after* using * wiphy_apply_custom_regulatory() the wireless core will * clear the REGULATORY_CUSTOM_REG for your wiphy as it would be * implied that the device somehow gained knowledge of its region. * @REGULATORY_STRICT_REG: tells us that the wiphy for this device * has regulatory domain that it wishes to be considered as the * superset for regulatory rules. After this device gets its regulatory * domain programmed further regulatory hints shall only be considered * for this device to enhance regulatory compliance, forcing the * device to only possibly use subsets of the original regulatory * rules. For example if channel 13 and 14 are disabled by this * device's regulatory domain no user specified regulatory hint which * has these channels enabled would enable them for this wiphy, * the device's original regulatory domain will be trusted as the * base. You can program the superset of regulatory rules for this * wiphy with regulatory_hint() for cards programmed with an * ISO3166-alpha2 country code. wiphys that use regulatory_hint() * will have their wiphy->regd programmed once the regulatory * domain is set, and all other regulatory hints will be ignored * until their own regulatory domain gets programmed. * @REGULATORY_DISABLE_BEACON_HINTS: enable this if your driver needs to * ensure that passive scan flags and beaconing flags may not be lifted by * cfg80211 due to regulatory beacon hints. For more information on beacon * hints read the documenation for regulatory_hint_found_beacon() * @REGULATORY_COUNTRY_IE_FOLLOW_POWER: for devices that have a preference * that even though they may have programmed their own custom power * setting prior to wiphy registration, they want to ensure their channel * power settings are updated for this connection with the power settings * derived from the regulatory domain. The regulatory domain used will be * based on the ISO3166-alpha2 from country IE provided through * regulatory_hint_country_ie() * @REGULATORY_COUNTRY_IE_IGNORE: for devices that have a preference to ignore * all country IE information processed by the regulatory core. This will * override %REGULATORY_COUNTRY_IE_FOLLOW_POWER as all country IEs will * be ignored. * @REGULATORY_ENABLE_RELAX_NO_IR: for devices that wish to allow the * NO_IR relaxation, which enables transmissions on channels on which * otherwise initiating radiation is not allowed. This will enable the * relaxations enabled under the CFG80211_REG_RELAX_NO_IR configuration * option * @REGULATORY_IGNORE_STALE_KICKOFF: the regulatory core will _not_ make sure * all interfaces on this wiphy reside on allowed channels. If this flag * is not set, upon a regdomain change, the interfaces are given a grace * period (currently 60 seconds) to disconnect or move to an allowed * channel. Interfaces on forbidden channels are forcibly disconnected. * Currently these types of interfaces are supported for enforcement: * NL80211_IFTYPE_ADHOC, NL80211_IFTYPE_STATION, NL80211_IFTYPE_AP, * NL80211_IFTYPE_AP_VLAN, NL80211_IFTYPE_MONITOR, * NL80211_IFTYPE_P2P_CLIENT, NL80211_IFTYPE_P2P_GO, * NL80211_IFTYPE_P2P_DEVICE. The flag will be set by default if a device * includes any modes unsupported for enforcement checking. * @REGULATORY_WIPHY_SELF_MANAGED: for devices that employ wiphy-specific * regdom management. These devices will ignore all regdom changes not * originating from their own wiphy. * A self-managed wiphys only employs regulatory information obtained from * the FW and driver and does not use other cfg80211 sources like * beacon-hints, country-code IEs and hints from other devices on the same * system. Conversely, a self-managed wiphy does not share its regulatory * hints with other devices in the system. If a system contains several * devices, one or more of which are self-managed, there might be * contradictory regulatory settings between them. Usage of flag is * generally discouraged. Only use it if the FW/driver is incompatible * with non-locally originated hints. * This flag is incompatible with the flags: %REGULATORY_CUSTOM_REG, * %REGULATORY_STRICT_REG, %REGULATORY_COUNTRY_IE_FOLLOW_POWER, * %REGULATORY_COUNTRY_IE_IGNORE and %REGULATORY_DISABLE_BEACON_HINTS. * Mixing any of the above flags with this flag will result in a failure * to register the wiphy. This flag implies * %REGULATORY_DISABLE_BEACON_HINTS and %REGULATORY_COUNTRY_IE_IGNORE. */ enum ieee80211_regulatory_flags { REGULATORY_CUSTOM_REG = BIT(0), REGULATORY_STRICT_REG = BIT(1), REGULATORY_DISABLE_BEACON_HINTS = BIT(2), REGULATORY_COUNTRY_IE_FOLLOW_POWER = BIT(3), REGULATORY_COUNTRY_IE_IGNORE = BIT(4), REGULATORY_ENABLE_RELAX_NO_IR = BIT(5), REGULATORY_IGNORE_STALE_KICKOFF = BIT(6), REGULATORY_WIPHY_SELF_MANAGED = BIT(7), }; struct ieee80211_freq_range { u32 start_freq_khz; u32 end_freq_khz; u32 max_bandwidth_khz; }; struct ieee80211_power_rule { u32 max_antenna_gain; u32 max_eirp; }; /** * struct ieee80211_wmm_ac - used to store per ac wmm regulatory limitation * * The information provided in this structure is required for QoS * transmit queue configuration. Cf. IEEE 802.11 7.3.2.29. * * @cw_min: minimum contention window [a value of the form * 2^n-1 in the range 1..32767] * @cw_max: maximum contention window [like @cw_min] * @cot: maximum burst time in units of 32 usecs, 0 meaning disabled * @aifsn: arbitration interframe space [0..255] * */ struct ieee80211_wmm_ac { u16 cw_min; u16 cw_max; u16 cot; u8 aifsn; }; struct ieee80211_wmm_rule { struct ieee80211_wmm_ac client[IEEE80211_NUM_ACS]; struct ieee80211_wmm_ac ap[IEEE80211_NUM_ACS]; }; struct ieee80211_reg_rule { struct ieee80211_freq_range freq_range; struct ieee80211_power_rule power_rule; struct ieee80211_wmm_rule wmm_rule; u32 flags; u32 dfs_cac_ms; bool has_wmm; }; struct ieee80211_regdomain { struct rcu_head rcu_head; u32 n_reg_rules; char alpha2[3]; enum nl80211_dfs_regions dfs_region; struct ieee80211_reg_rule reg_rules[]; }; #define MHZ_TO_KHZ(freq) ((freq) * 1000) #define KHZ_TO_MHZ(freq) ((freq) / 1000) #define DBI_TO_MBI(gain) ((gain) * 100) #define MBI_TO_DBI(gain) ((gain) / 100) #define DBM_TO_MBM(gain) ((gain) * 100) #define MBM_TO_DBM(gain) ((gain) / 100) #define REG_RULE_EXT(start, end, bw, gain, eirp, dfs_cac, reg_flags) \ { \ .freq_range.start_freq_khz = MHZ_TO_KHZ(start), \ .freq_range.end_freq_khz = MHZ_TO_KHZ(end), \ .freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw), \ .power_rule.max_antenna_gain = DBI_TO_MBI(gain), \ .power_rule.max_eirp = DBM_TO_MBM(eirp), \ .flags = reg_flags, \ .dfs_cac_ms = dfs_cac, \ } #define REG_RULE(start, end, bw, gain, eirp, reg_flags) \ REG_RULE_EXT(start, end, bw, gain, eirp, 0, reg_flags) #endif