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