| #ifndef __NET_REGULATORY_H |
| #define __NET_REGULATORY_H |
| /* |
| * regulatory support structures |
| * |
| * Copyright 2008-2009 Luis R. Rodriguez <mcgrof@qca.qualcomm.com> |
| * |
| * 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. |
| */ |
| 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), |
| }; |
| |
| 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_reg_rule { |
| struct ieee80211_freq_range freq_range; |
| struct ieee80211_power_rule power_rule; |
| u32 flags; |
| u32 dfs_cac_ms; |
| }; |
| |
| 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 |
