| #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[3]; | |
| 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 |