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Diffstat (limited to 'net/wireless/reg.h')
| -rw-r--r-- | net/wireless/reg.h | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/net/wireless/reg.h b/net/wireless/reg.h new file mode 100644 index 0000000000..f3707f7290 --- /dev/null +++ b/net/wireless/reg.h @@ -0,0 +1,189 @@ +#ifndef __NET_WIRELESS_REG_H +#define __NET_WIRELESS_REG_H + +#include <net/cfg80211.h> + +/* + * Copyright 2008-2011 Luis R. Rodriguez <mcgrof@qca.qualcomm.com> + * Copyright (C) 2019 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. + */ + +enum ieee80211_regd_source { + REGD_SOURCE_INTERNAL_DB, + REGD_SOURCE_CRDA, + REGD_SOURCE_CACHED, +}; + +extern const struct ieee80211_regdomain __rcu *cfg80211_regdomain; + +bool reg_is_valid_request(const char *alpha2); +bool is_world_regdom(const char *alpha2); +bool reg_supported_dfs_region(enum nl80211_dfs_regions dfs_region); +enum nl80211_dfs_regions reg_get_dfs_region(struct wiphy *wiphy); + +int regulatory_hint_user(const char *alpha2, + enum nl80211_user_reg_hint_type user_reg_hint_type); + +/** + * regulatory_hint_indoor - hint operation in indoor env. or not + * @is_indoor: if true indicates that user space thinks that the + * device is operating in an indoor environment. + * @portid: the netlink port ID on which the hint was given. + */ +int regulatory_hint_indoor(bool is_indoor, u32 portid); + +/** + * regulatory_netlink_notify - notify on released netlink socket + * @portid: the netlink socket port ID + */ +void regulatory_netlink_notify(u32 portid); + +void wiphy_regulatory_register(struct wiphy *wiphy); +void wiphy_regulatory_deregister(struct wiphy *wiphy); + +int __init regulatory_init(void); +void regulatory_exit(void); + +int set_regdom(const struct ieee80211_regdomain *rd, + enum ieee80211_regd_source regd_src); + +unsigned int reg_get_max_bandwidth(const struct ieee80211_regdomain *rd, + const struct ieee80211_reg_rule *rule); + +bool reg_last_request_cell_base(void); + +/** + * regulatory_hint_found_beacon - hints a beacon was found on a channel + * @wiphy: the wireless device where the beacon was found on + * @beacon_chan: the channel on which the beacon was found on + * @gfp: context flags + * + * This informs the wireless core that a beacon from an AP was found on + * the channel provided. This allows the wireless core to make educated + * guesses on regulatory to help with world roaming. This is only used for + * world roaming -- when we do not know our current location. This is + * only useful on channels 12, 13 and 14 on the 2 GHz band as channels + * 1-11 are already enabled by the world regulatory domain; and on + * non-radar 5 GHz channels. + * + * Drivers do not need to call this, cfg80211 will do it for after a scan + * on a newly found BSS. If you cannot make use of this feature you can + * set the wiphy->disable_beacon_hints to true. + */ +int regulatory_hint_found_beacon(struct wiphy *wiphy, + struct ieee80211_channel *beacon_chan, + gfp_t gfp); + +/** + * regulatory_hint_country_ie - hints a country IE as a regulatory domain + * @wiphy: the wireless device giving the hint (used only for reporting + * conflicts) + * @band: the band on which the country IE was received on. This determines + * the band we'll process the country IE channel triplets for. + * @country_ie: pointer to the country IE + * @country_ie_len: length of the country IE + * + * We will intersect the rd with the what CRDA tells us should apply + * for the alpha2 this country IE belongs to, this prevents APs from + * sending us incorrect or outdated information against a country. + * + * The AP is expected to provide Country IE channel triplets for the + * band it is on. It is technically possible for APs to send channel + * country IE triplets even for channels outside of the band they are + * in but for that they would have to use the regulatory extension + * in combination with a triplet but this behaviour is currently + * not observed. For this reason if a triplet is seen with channel + * information for a band the BSS is not present in it will be ignored. + */ +void regulatory_hint_country_ie(struct wiphy *wiphy, + enum nl80211_band band, + const u8 *country_ie, + u8 country_ie_len); + +/** + * regulatory_hint_disconnect - informs all devices have been disconnected + * + * Regulotory rules can be enhanced further upon scanning and upon + * connection to an AP. These rules become stale if we disconnect + * and go to another country, whether or not we suspend and resume. + * If we suspend, go to another country and resume we'll automatically + * get disconnected shortly after resuming and things will be reset as well. + * This routine is a helper to restore regulatory settings to how they were + * prior to our first connect attempt. This includes ignoring country IE and + * beacon regulatory hints. The ieee80211_regdom module parameter will always + * be respected but if a user had set the regulatory domain that will take + * precedence. + * + * Must be called from process context. + */ +void regulatory_hint_disconnect(void); + +/** + * cfg80211_get_unii - get the U-NII band for the frequency + * @freq: the frequency for which we want to get the UNII band. + + * Get a value specifying the U-NII band frequency belongs to. + * U-NII bands are defined by the FCC in C.F.R 47 part 15. + * + * Returns -EINVAL if freq is invalid, 0 for UNII-1, 1 for UNII-2A, + * 2 for UNII-2B, 3 for UNII-2C and 4 for UNII-3. + */ +int cfg80211_get_unii(int freq); + +/** + * regulatory_indoor_allowed - is indoor operation allowed + */ +bool regulatory_indoor_allowed(void); + +/* + * Grace period to timeout pre-CAC results on the dfs channels. This timeout + * value is used for Non-ETSI domain. + * TODO: May be make this timeout available through regdb? + */ +#define REG_PRE_CAC_EXPIRY_GRACE_MS 2000 + +/** + * regulatory_propagate_dfs_state - Propagate DFS channel state to other wiphys + * @wiphy - wiphy on which radar is detected and the event will be propagated + * to other available wiphys having the same DFS domain + * @chandef - Channel definition of radar detected channel + * @dfs_state - DFS channel state to be set + * @event - Type of radar event which triggered this DFS state change + * + * This function should be called with rtnl lock held. + */ +void regulatory_propagate_dfs_state(struct wiphy *wiphy, + struct cfg80211_chan_def *chandef, + enum nl80211_dfs_state dfs_state, + enum nl80211_radar_event event); + +/** + * reg_dfs_domain_same - Checks if both wiphy have same DFS domain configured + * @wiphy1 - wiphy it's dfs_region to be checked against that of wiphy2 + * @wiphy2 - wiphy it's dfs_region to be checked against that of wiphy1 + */ +bool reg_dfs_domain_same(struct wiphy *wiphy1, struct wiphy *wiphy2); + +/** + * reg_reload_regdb - reload the regulatory.db firmware file + */ +int reg_reload_regdb(void); + +extern const u8 shipped_regdb_certs[]; +extern unsigned int shipped_regdb_certs_len; +extern const u8 extra_regdb_certs[]; +extern unsigned int extra_regdb_certs_len; + +#endif /* __NET_WIRELESS_REG_H */ |